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GNU Free Documentation License
Version 1.2, November 2002
Copyright (C) 2000,2001,2002 Free Software Foundation, Inc.
51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
Everyone is permitted to copy and distribute verbatim copies
of this license document, but changing it is not allowed.
0. PREAMBLE
The purpose of this License is to make a manual, textbook, or other
functional and useful document "free" in the sense of freedom: to
assure everyone the effective freedom to copy and redistribute it,
with or without modifying it, either commercially or noncommercially.
Secondarily, this License preserves for the author and publisher a way
to get credit for their work, while not being considered responsible
for modifications made by others.
This License is a kind of "copyleft", which means that derivative
works of the document must themselves be free in the same sense. It
complements the GNU General Public License, which is a copyleft
license designed for free software.
We have designed this License in order to use it for manuals for free
software, because free software needs free documentation: a free
program should come with manuals providing the same freedoms that the
software does. But this License is not limited to software manuals;
it can be used for any textual work, regardless of subject matter or
whether it is published as a printed book. We recommend this License
principally for works whose purpose is instruction or reference.
1. APPLICABILITY AND DEFINITIONS
This License applies to any manual or other work, in any medium, that
contains a notice placed by the copyright holder saying it can be
distributed under the terms of this License. Such a notice grants a
world-wide, royalty-free license, unlimited in duration, to use that
work under the conditions stated herein. The "Document", below,
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A "Modified Version" of the Document means any work containing the
Document or a portion of it, either copied verbatim, or with
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A "Secondary Section" is a named appendix or a front-matter section of
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The "Invariant Sections" are certain Secondary Sections whose titles
are designated, as being those of Invariant Sections, in the notice
that says that the Document is released under this License. If a
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allowed to be designated as Invariant. The Document may contain zero
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Sections then there are none.
The "Cover Texts" are certain short passages of text that are listed,
as Front-Cover Texts or Back-Cover Texts, in the notice that says that
the Document is released under this License. A Front-Cover Text may
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A "Transparent" copy of the Document means a machine-readable copy,
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processors for output purposes only.
The "Title Page" means, for a printed book, the title page itself,
plus such following pages as are needed to hold, legibly, the material
this License requires to appear in the title page. For works in
formats which do not have any title page as such, "Title Page" means
the text near the most prominent appearance of the work's title,
preceding the beginning of the body of the text.
A section "Entitled XYZ" means a named subunit of the Document whose
title either is precisely XYZ or contains XYZ in parentheses following
text that translates XYZ in another language. (Here XYZ stands for a
specific section name mentioned below, such as "Acknowledgements",
"Dedications", "Endorsements", or "History".) To "Preserve the Title"
of such a section when you modify the Document means that it remains a
section "Entitled XYZ" according to this definition.
The Document may include Warranty Disclaimers next to the notice which
states that this License applies to the Document. These Warranty
Disclaimers are considered to be included by reference in this
License, but only as regards disclaiming warranties: any other
implication that these Warranty Disclaimers may have is void and has
no effect on the meaning of this License.
2. VERBATIM COPYING
You may copy and distribute the Document in any medium, either
commercially or noncommercially, provided that this License, the
copyright notices, and the license notice saying this License applies
to the Document are reproduced in all copies, and that you add no other
conditions whatsoever to those of this License. You may not use
technical measures to obstruct or control the reading or further
copying of the copies you make or distribute. However, you may accept
compensation in exchange for copies. If you distribute a large enough
number of copies you must also follow the conditions in section 3.
You may also lend copies, under the same conditions stated above, and
you may publicly display copies.
3. COPYING IN QUANTITY
If you publish printed copies (or copies in media that commonly have
printed covers) of the Document, numbering more than 100, and the
Document's license notice requires Cover Texts, you must enclose the
copies in covers that carry, clearly and legibly, all these Cover
Texts: Front-Cover Texts on the front cover, and Back-Cover Texts on
the back cover. Both covers must also clearly and legibly identify
you as the publisher of these copies. The front cover must present
the full title with all words of the title equally prominent and
visible. You may add other material on the covers in addition.
Copying with changes limited to the covers, as long as they preserve
the title of the Document and satisfy these conditions, can be treated
as verbatim copying in other respects.
If the required texts for either cover are too voluminous to fit
legibly, you should put the first ones listed (as many as fit
reasonably) on the actual cover, and continue the rest onto adjacent
pages.
If you publish or distribute Opaque copies of the Document numbering
more than 100, you must either include a machine-readable Transparent
copy along with each Opaque copy, or state in or with each Opaque copy
a computer-network location from which the general network-using
public has access to download using public-standard network protocols
a complete Transparent copy of the Document, free of added material.
If you use the latter option, you must take reasonably prudent steps,
when you begin distribution of Opaque copies in quantity, to ensure
that this Transparent copy will remain thus accessible at the stated
location until at least one year after the last time you distribute an
Opaque copy (directly or through your agents or retailers) of that
edition to the public.
It is requested, but not required, that you contact the authors of the
Document well before redistributing any large number of copies, to give
them a chance to provide you with an updated version of the Document.
4. MODIFICATIONS
You may copy and distribute a Modified Version of the Document under
the conditions of sections 2 and 3 above, provided that you release
the Modified Version under precisely this License, with the Modified
Version filling the role of the Document, thus licensing distribution
and modification of the Modified Version to whoever possesses a copy
of it. In addition, you must do these things in the Modified Version:
A. Use in the Title Page (and on the covers, if any) a title distinct
from that of the Document, and from those of previous versions
(which should, if there were any, be listed in the History section
of the Document). You may use the same title as a previous version
if the original publisher of that version gives permission.
B. List on the Title Page, as authors, one or more persons or entities
responsible for authorship of the modifications in the Modified
Version, together with at least five of the principal authors of the
Document (all of its principal authors, if it has fewer than five),
unless they release you from this requirement.
C. State on the Title page the name of the publisher of the
Modified Version, as the publisher.
D. Preserve all the copyright notices of the Document.
E. Add an appropriate copyright notice for your modifications
adjacent to the other copyright notices.
F. Include, immediately after the copyright notices, a license notice
giving the public permission to use the Modified Version under the
terms of this License, in the form shown in the Addendum below.
G. Preserve in that license notice the full lists of Invariant Sections
and required Cover Texts given in the Document's license notice.
H. Include an unaltered copy of this License.
I. Preserve the section Entitled "History", Preserve its Title, and add
to it an item stating at least the title, year, new authors, and
publisher of the Modified Version as given on the Title Page. If
there is no section Entitled "History" in the Document, create one
stating the title, year, authors, and publisher of the Document as
given on its Title Page, then add an item describing the Modified
Version as stated in the previous sentence.
J. Preserve the network location, if any, given in the Document for
public access to a Transparent copy of the Document, and likewise
the network locations given in the Document for previous versions
it was based on. These may be placed in the "History" section.
You may omit a network location for a work that was published at
least four years before the Document itself, or if the original
publisher of the version it refers to gives permission.
K. For any section Entitled "Acknowledgements" or "Dedications",
Preserve the Title of the section, and preserve in the section all
the substance and tone of each of the contributor acknowledgements
and/or dedications given therein.
L. Preserve all the Invariant Sections of the Document,
unaltered in their text and in their titles. Section numbers
or the equivalent are not considered part of the section titles.
M. Delete any section Entitled "Endorsements". Such a section
may not be included in the Modified Version.
N. Do not retitle any existing section to be Entitled "Endorsements"
or to conflict in title with any Invariant Section.
O. Preserve any Warranty Disclaimers.
If the Modified Version includes new front-matter sections or
appendices that qualify as Secondary Sections and contain no material
copied from the Document, you may at your option designate some or all
of these sections as invariant. To do this, add their titles to the
list of Invariant Sections in the Modified Version's license notice.
These titles must be distinct from any other section titles.
You may add a section Entitled "Endorsements", provided it contains
nothing but endorsements of your Modified Version by various
parties--for example, statements of peer review or that the text has
been approved by an organization as the authoritative definition of a
standard.
You may add a passage of up to five words as a Front-Cover Text, and a
passage of up to 25 words as a Back-Cover Text, to the end of the list
of Cover Texts in the Modified Version. Only one passage of
Front-Cover Text and one of Back-Cover Text may be added by (or
through arrangements made by) any one entity. If the Document already
includes a cover text for the same cover, previously added by you or
by arrangement made by the same entity you are acting on behalf of,
you may not add another; but you may replace the old one, on explicit
permission from the previous publisher that added the old one.
The author(s) and publisher(s) of the Document do not by this License
give permission to use their names for publicity for or to assert or
imply endorsement of any Modified Version.
5. COMBINING DOCUMENTS
You may combine the Document with other documents released under this
License, under the terms defined in section 4 above for modified
versions, provided that you include in the combination all of the
Invariant Sections of all of the original documents, unmodified, and
list them all as Invariant Sections of your combined work in its
license notice, and that you preserve all their Warranty Disclaimers.
The combined work need only contain one copy of this License, and
multiple identical Invariant Sections may be replaced with a single
copy. If there are multiple Invariant Sections with the same name but
different contents, make the title of each such section unique by
adding at the end of it, in parentheses, the name of the original
author or publisher of that section if known, or else a unique number.
Make the same adjustment to the section titles in the list of
Invariant Sections in the license notice of the combined work.
In the combination, you must combine any sections Entitled "History"
in the various original documents, forming one section Entitled
"History"; likewise combine any sections Entitled "Acknowledgements",
and any sections Entitled "Dedications". You must delete all sections
Entitled "Endorsements".
6. COLLECTIONS OF DOCUMENTS
You may make a collection consisting of the Document and other documents
released under this License, and replace the individual copies of this
License in the various documents with a single copy that is included in
the collection, provided that you follow the rules of this License for
verbatim copying of each of the documents in all other respects.
You may extract a single document from such a collection, and distribute
it individually under this License, provided you insert a copy of this
License into the extracted document, and follow this License in all
other respects regarding verbatim copying of that document.
7. AGGREGATION WITH INDEPENDENT WORKS
A compilation of the Document or its derivatives with other separate
and independent documents or works, in or on a volume of a storage or
distribution medium, is called an "aggregate" if the copyright
resulting from the compilation is not used to limit the legal rights
of the compilation's users beyond what the individual works permit.
When the Document is included in an aggregate, this License does not
apply to the other works in the aggregate which are not themselves
derivative works of the Document.
If the Cover Text requirement of section 3 is applicable to these
copies of the Document, then if the Document is less than one half of
the entire aggregate, the Document's Cover Texts may be placed on
covers that bracket the Document within the aggregate, or the
electronic equivalent of covers if the Document is in electronic form.
Otherwise they must appear on printed covers that bracket the whole
aggregate.
8. TRANSLATION
Translation is considered a kind of modification, so you may
distribute translations of the Document under the terms of section 4.
Replacing Invariant Sections with translations requires special
permission from their copyright holders, but you may include
translations of some or all Invariant Sections in addition to the
original versions of these Invariant Sections. You may include a
translation of this License, and all the license notices in the
Document, and any Warranty Disclaimers, provided that you also include
the original English version of this License and the original versions
of those notices and disclaimers. In case of a disagreement between
the translation and the original version of this License or a notice
or disclaimer, the original version will prevail.
If a section in the Document is Entitled "Acknowledgements",
"Dedications", or "History", the requirement (section 4) to Preserve
its Title (section 1) will typically require changing the actual
title.
9. TERMINATION
You may not copy, modify, sublicense, or distribute the Document except
as expressly provided for under this License. Any other attempt to
copy, modify, sublicense or distribute the Document is void, and will
automatically terminate your rights under this License. However,
parties who have received copies, or rights, from you under this
License will not have their licenses terminated so long as such
parties remain in full compliance.
10. FUTURE REVISIONS OF THIS LICENSE
The Free Software Foundation may publish new, revised versions
of the GNU Free Documentation License from time to time. Such new
versions will be similar in spirit to the present version, but may
differ in detail to address new problems or concerns. See
http://www.gnu.org/copyleft/.
Each version of the License is given a distinguishing version number.
If the Document specifies that a particular numbered version of this
License "or any later version" applies to it, you have the option of
following the terms and conditions either of that specified version or
of any later version that has been published (not as a draft) by the
Free Software Foundation. If the Document does not specify a version
number of this License, you may choose any version ever published (not
as a draft) by the Free Software Foundation.
ADDENDUM: How to use this License for your documents
To use this License in a document you have written, include a copy of
the License in the document and put the following copyright and
license notices just after the title page:
Copyright (c) YEAR YOUR NAME.
Permission is granted to copy, distribute and/or modify this document
under the terms of the GNU Free Documentation License, Version 1.2
or any later version published by the Free Software Foundation;
with no Invariant Sections, no Front-Cover Texts, and no Back-Cover Texts.
A copy of the license is included in the section entitled "GNU
Free Documentation License".
If you have Invariant Sections, Front-Cover Texts and Back-Cover Texts,
replace the "with...Texts." line with this:
with the Invariant Sections being LIST THEIR TITLES, with the
Front-Cover Texts being LIST, and with the Back-Cover Texts being LIST.
If you have Invariant Sections without Cover Texts, or some other
combination of the three, merge those two alternatives to suit the
situation.
If your document contains nontrivial examples of program code, we
recommend releasing these examples in parallel under your choice of
free software license, such as the GNU General Public License,
to permit their use in free software.

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GNU GENERAL PUBLIC LICENSE
Version 2, June 1991
Copyright (C) 1989, 1991 Free Software Foundation, Inc.,
51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
Everyone is permitted to copy and distribute verbatim copies
of this license document, but changing it is not allowed.
Preamble
The licenses for most software are designed to take away your
freedom to share and change it. By contrast, the GNU General Public
License is intended to guarantee your freedom to share and change free
software--to make sure the software is free for all its users. This
General Public License applies to most of the Free Software
Foundation's software and to any other program whose authors commit to
using it. (Some other Free Software Foundation software is covered by
the GNU Lesser General Public License instead.) You can apply it to
your programs, too.
When we speak of free software, we are referring to freedom, not
price. Our General Public Licenses are designed to make sure that you
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To protect your rights, we need to make restrictions that forbid
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For example, if you distribute copies of such a program, whether
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We protect your rights with two steps: (1) copyright the software, and
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Finally, any free program is threatened constantly by software
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The precise terms and conditions for copying, distribution and
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GNU GENERAL PUBLIC LICENSE
TERMS AND CONDITIONS FOR COPYING, DISTRIBUTION AND MODIFICATION
0. This License applies to any program or other work which contains
a notice placed by the copyright holder saying it may be distributed
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Whether that is true depends on what the Program does.
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You may charge a fee for the physical act of transferring a copy, and
you may at your option offer warranty protection in exchange for a fee.
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These requirements apply to the modified work as a whole. If
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except as expressly provided under this License. Any attempt
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However, parties who have received copies, or rights, from you under
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may not distribute the Program at all. For example, if a patent
license would not permit royalty-free redistribution of the Program by
all those who receive copies directly or indirectly through you, then
the only way you could satisfy both it and this License would be to
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If any portion of this section is held invalid or unenforceable under
any particular circumstance, the balance of the section is intended to
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It is not the purpose of this section to induce you to infringe any
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This section is intended to make thoroughly clear what is believed to
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8. If the distribution and/or use of the Program is restricted in
certain countries either by patents or by copyrighted interfaces, the
original copyright holder who places the Program under this License
may add an explicit geographical distribution limitation excluding
those countries, so that distribution is permitted only in or among
countries not thus excluded. In such case, this License incorporates
the limitation as if written in the body of this License.
9. The Free Software Foundation may publish revised and/or new versions
of the General Public License from time to time. Such new versions will
be similar in spirit to the present version, but may differ in detail to
address new problems or concerns.
Each version is given a distinguishing version number. If the Program
specifies a version number of this License which applies to it and "any
later version", you have the option of following the terms and conditions
either of that version or of any later version published by the Free
Software Foundation. If the Program does not specify a version number of
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Foundation.
10. If you wish to incorporate parts of the Program into other free
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NO WARRANTY
11. BECAUSE THE PROGRAM IS LICENSED FREE OF CHARGE, THERE IS NO WARRANTY
FOR THE PROGRAM, TO THE EXTENT PERMITTED BY APPLICABLE LAW. EXCEPT WHEN
OTHERWISE STATED IN WRITING THE COPYRIGHT HOLDERS AND/OR OTHER PARTIES
PROVIDE THE PROGRAM "AS IS" WITHOUT WARRANTY OF ANY KIND, EITHER EXPRESSED
OR IMPLIED, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. THE ENTIRE RISK AS
TO THE QUALITY AND PERFORMANCE OF THE PROGRAM IS WITH YOU. SHOULD THE
PROGRAM PROVE DEFECTIVE, YOU ASSUME THE COST OF ALL NECESSARY SERVICING,
REPAIR OR CORRECTION.
12. IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN WRITING
WILL ANY COPYRIGHT HOLDER, OR ANY OTHER PARTY WHO MAY MODIFY AND/OR
REDISTRIBUTE THE PROGRAM AS PERMITTED ABOVE, BE LIABLE TO YOU FOR DAMAGES,
INCLUDING ANY GENERAL, SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES ARISING
OUT OF THE USE OR INABILITY TO USE THE PROGRAM (INCLUDING BUT NOT LIMITED
TO LOSS OF DATA OR DATA BEING RENDERED INACCURATE OR LOSSES SUSTAINED BY
YOU OR THIRD PARTIES OR A FAILURE OF THE PROGRAM TO OPERATE WITH ANY OTHER
PROGRAMS), EVEN IF SUCH HOLDER OR OTHER PARTY HAS BEEN ADVISED OF THE
POSSIBILITY OF SUCH DAMAGES.
END OF TERMS AND CONDITIONS
How to Apply These Terms to Your New Programs
If you develop a new program, and you want it to be of the greatest
possible use to the public, the best way to achieve this is to make it
free software which everyone can redistribute and change under these terms.
To do so, attach the following notices to the program. It is safest
to attach them to the start of each source file to most effectively
convey the exclusion of warranty; and each file should have at least
the "copyright" line and a pointer to where the full notice is found.
<one line to give the program's name and a brief idea of what it does.>
Copyright (C) <year> <name of author>
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License along
with this program; if not, write to the Free Software Foundation, Inc.,
51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
Also add information on how to contact you by electronic and paper mail.
If the program is interactive, make it output a short notice like this
when it starts in an interactive mode:
Gnomovision version 69, Copyright (C) year name of author
Gnomovision comes with ABSOLUTELY NO WARRANTY; for details type `show w'.
This is free software, and you are welcome to redistribute it
under certain conditions; type `show c' for details.
The hypothetical commands `show w' and `show c' should show the appropriate
parts of the General Public License. Of course, the commands you use may
be called something other than `show w' and `show c'; they could even be
mouse-clicks or menu items--whatever suits your program.
You should also get your employer (if you work as a programmer) or your
school, if any, to sign a "copyright disclaimer" for the program, if
necessary. Here is a sample; alter the names:
Yoyodyne, Inc., hereby disclaims all copyright interest in the program
`Gnomovision' (which makes passes at compilers) written by James Hacker.
<signature of Ty Coon>, 1 April 1989
Ty Coon, President of Vice
This General Public License does not permit incorporating your program into
proprietary programs. If your program is a subroutine library, you may
consider it more useful to permit linking proprietary applications with the
library. If this is what you want to do, use the GNU Lesser General
Public License instead of this License.

188
Makefile Normal file
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# Makefile for Services.
#
# IRC Services is copyright (c) 1996-2009 Andrew Church.
# E-mail: <achurch@achurch.org>
# Parts written by Andrew Kempe and others.
# This program is free but copyrighted software; see the file GPL.txt for
# details.
include Makefile.inc
TOPDIR=.
default: all
###########################################################################
########################## Configuration section ##########################
# NOTE: Compilation options (CLEAN_COMPILE, etc.) are now all controlled by
# the configure script.
# Add any extra flags you want here. The default line below enables
# warnings and debugging symbols on GCC. If you have a non-GCC compiler,
# you may want to comment it out or change it. ("icc" below is the Intel
# C compiler for Linux, which doesn't understand GCC's -W/-f options.)
ifeq ($(CC),icc)
MORE_CFLAGS = -g
else
MORE_CFLAGS = -g -Wall -Wmissing-prototypes
endif
######################## End configuration section ########################
###########################################################################
ifneq ($(STATIC_MODULES),)
CDEFS += -DSTATIC_MODULES
MODLIB = modules/modules.a
endif
CFLAGS = $(CDEFS) $(BASE_CFLAGS) $(MORE_CFLAGS)
OBJS = actions.o channels.o commands.o compat.o conffile.o databases.o \
encrypt.o ignore.o init.o language.o log.o main.o memory.o \
messages.o misc.o modes.o modules.o process.o send.o servers.o \
signals.o sockets.o timeout.o users.o $(VSNPRINTF_O)
.c.o:
$(CC) $(CFLAGS) -c $< -o $@
###########################################################################
.PHONY: default config-check all myall myclean clean spotless distclean \
install instbin instmod modules languages tools
###########################################################################
config-check:
@if ./configure -check ; then : ; else \
echo 'Either you have not yet run the "configure" script, or the script has been' ; \
echo 'updated since you last ran it. Please run "./configure" before running' ; \
echo '"$(MAKE)".' ; \
exit 1 ; \
fi
all: config-check myall
@echo Now run \"$(MAKE) install\" to install Services.
myall: $(PROGRAM) languages tools
myclean:
rm -f *.o $(PROGRAM) version.c.old
clean: myclean
$(MAKE) -C lang clean
$(MAKE) -C modules clean
$(MAKE) -C tools clean
spotless distclean: myclean
$(MAKE) -C lang spotless
$(MAKE) -C modules spotless
$(MAKE) -C tools spotless
rm -rf config.cache config.h* configure.log conf-tmp Makefile.inc* \
langstrs.h version.c
install: config-check myall myinstall
@echo ""
@echo "Don't forget to create/update your ircservices.conf and modules.conf files!"
@echo "See the README for details."
@echo ""
myinstall: instdirs instbin instmod
$(MAKE) -C lang install
$(MAKE) -C tools install
$(MAKE) -C data install
instdirs:
mkdir -p "$(INSTALL_PREFIX)$(BINDEST)"
mkdir -p "$(INSTALL_PREFIX)$(DATDEST)"
instbin:
$(INSTALL_EXE) $(PROGRAM)$(EXE_SUFFIX) "$(INSTALL_PREFIX)$(BINDEST)/$(PROGRAM)$(EXE_SUFFIX)"
ifneq ($(STATIC_MODULES),)
instmod:
else
instmod:
$(MAKE) -C modules install
endif
###########################################################################
$(PROGRAM): $(OBJS) modules version.o
$(CC) $(LFLAGS) $(OBJS) version.o $(MODLIB) $(LIBS) -o $@
ifneq ($(STATIC_MODULES),)
modules:
@$(MAKE) -C modules all-static CFLAGS="$(CFLAGS)"
else
modules:
@$(MAKE) -C modules all-dynamic CFLAGS="$(CFLAGS)"
endif
languages:
@$(MAKE) -C lang CFLAGS="$(CFLAGS)"
tools: services.h
@$(MAKE) -C tools CFLAGS="$(CFLAGS)"
# Catch any changes in compilation options at the top of this file or the
# configure output
$(OBJS): Makefile Makefile.inc
$(OBJS): services.h
actions.o: actions.c language.h modules.h timeout.h
channels.o: channels.c modules.h hash.h
commands.o: commands.c modules.h commands.h language.h
compat.o: compat.c
conffile.o: conffile.c conffile.h
databases.o: databases.c databases.h encrypt.h modules.h
encrypt.o: encrypt.c encrypt.h
ignore.o: ignore.c
init.o: init.c conffile.h databases.h messages.h modules.h \
language.h version.h
language.o: language.c language.h modules/nickserv/nickserv.h
log.o: log.c
main.o: main.c databases.h modules.h timeout.h
memory.o: memory.c
messages.o: messages.c messages.h language.h modules.h version.h \
modules/operserv/operserv.h
misc.o: misc.c
modes.o: modes.c
modules.o: modules.c modules.h conffile.h
process.o: process.c modules.h messages.h
send.o: send.c modules.h language.h
servers.o: servers.c modules.h hash.h
signals.o: signals.c
sockets.o: sockets.c
timeout.o: timeout.c timeout.h
users.o: users.c modules.h hash.h
vsnprintf.o: vsnprintf.c
services.h: config.h defs.h memory.h list-array.h log.h sockets.h \
send.h modes.h users.h channels.h servers.h extern.h
-touch $@
version.c: $(OBJS) modules/.stamp
sh version.sh
modules/.stamp: modules
databases.h: modules.h
-touch $@
language.h: langstrs.h
-touch $@
langstrs.h: lang/langstrs.h
cp -p lang/langstrs.h .
.PHONY: lang/langstrs.h
lang/langstrs.h:
$(MAKE) -C lang langstrs.h
###########################################################################

16
README Normal file
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IRC Services -- a system of IRC services for IRC networks
---------------------------------------------------------
IRC Services is copyright (c) 1996-2009 Andrew Church. There is absolutely
NO WARRANTY provided with this program; if it blows up in your face, you
get to clean up the mess. Services is provided under the terms of the GNU
General Public License, version 2 or later, and may be freely redistributed,
with certain limitations described in that license (notably, if you
distribute IRC Services at all then you must distribute the source code as
well). See the GNU General Public License (in the file GPL.txt) and the
relevant section of the manual (docs/copyright.html).
---------------------------------------------------------------------------
Documentation is located in the docs/ directory; point your browser at
docs/index.html to start reading.

712
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/* Various routines to perform simple actions.
*
* IRC Services is copyright (c) 1996-2009 Andrew Church.
* E-mail: <achurch@achurch.org>
* Parts written by Andrew Kempe and others.
* This program is free but copyrighted software; see the file GPL.txt for
* details.
*/
#include "services.h"
#include "language.h"
#include "modules.h"
#include "timeout.h"
/*************************************************************************/
static int cb_clear_channel = -1;
static int cb_set_topic = -1;
/* Sender to be used with clear_channel() (empty string: use server name) */
static char clear_channel_sender[NICKMAX] = {0};
/*************************************************************************/
/*************************************************************************/
int actions_init(int ac, char **av)
{
cb_clear_channel = register_callback("clear channel");
cb_set_topic = register_callback("set topic");
if (cb_clear_channel < 0 || cb_set_topic < 0) {
log("actions_init: register_callback() failed\n");
return 0;
}
return 1;
}
/*************************************************************************/
void actions_cleanup(void)
{
unregister_callback(cb_set_topic);
unregister_callback(cb_clear_channel);
}
/*************************************************************************/
/*************************************************************************/
/* Note a bad password attempt for the given user from the given service.
* If they've used up their limit, toss them off. `service' is used only
* for the sender of the bad-password and warning messages; these messages
* are not sent if `service' is NULL. `what' describes what the password
* was for, and is used in the kill message if the user is killed. The
* function's return value is 1 if the user was warned, 2 if the user was
* killed, and 0 otherwise.
*/
int bad_password(const char *service, User *u, const char *what)
{
time_t now = time(NULL);
if (service)
notice_lang(service, u, PASSWORD_INCORRECT);
if (!BadPassLimit)
return 0;
if (BadPassTimeout > 0 && u->bad_pw_time > 0
&& now >= u->bad_pw_time + BadPassTimeout)
u->bad_pw_count = 0;
u->bad_pw_count++;
u->bad_pw_time = now;
if (u->bad_pw_count >= BadPassLimit) {
char buf[BUFSIZE];
snprintf(buf, sizeof(buf), "Too many invalid passwords (%s)", what);
kill_user(NULL, u->nick, buf);
return 2;
} else if (u->bad_pw_count == BadPassLimit-1) {
if (service)
notice_lang(service, u, PASSWORD_WARNING);
return 1;
}
return 0;
}
/*************************************************************************/
/* Clear modes/users from a channel. The "what" parameter is one or more
* of the CLEAR_* constants defined in services.h. "param" is:
* - for CLEAR_USERS, a kick message (const char *)
* - for CLEAR_UMODES, a bitmask of modes to clear (int32)
* - for CLEAR_BANS and CLEAR_EXCEPTS, a User * to match against, or
* NULL for all bans/exceptions
* Note that CLEAR_EXCEPTS must be handled via callback for protocols which
* support it.
*/
static void clear_modes(const char *sender, Channel *chan);
static void clear_bans(const char *sender, Channel *chan, User *u);
static void clear_umodes(const char *sender, Channel *chan, int32 modes);
static void clear_users(const char *sender, Channel *chan, const char *reason);
void clear_channel(Channel *chan, int what, const void *param)
{
const char *sender =
*clear_channel_sender ? clear_channel_sender : ServerName;
if (call_callback_4(cb_clear_channel, sender, chan, what, param) > 0) {
set_cmode(NULL, chan);
return;
}
if (what & CLEAR_USERS) {
clear_users(sender, chan, (const char *)param);
/* Once we kick all the users, nothing else will matter */
return;
}
if (what & CLEAR_MODES)
clear_modes(sender, chan);
if (what & CLEAR_BANS)
clear_bans(sender, chan, (User *)param);
if (what & CLEAR_UMODES)
clear_umodes(sender, chan, (int32)(long)param);
set_cmode(NULL, chan); /* Flush modes out */
}
static void clear_modes(const char *sender, Channel *chan)
{
char buf[BUFSIZE];
snprintf(buf, sizeof(buf), "-%s",
mode_flags_to_string(chan->mode & ~chanmode_reg, MODE_CHANNEL));
set_cmode(sender, chan, buf, chan->key);
}
static void clear_bans(const char *sender, Channel *chan, User *u)
{
int i, count;
char **bans;
if (!chan->bans_count)
return;
/* Save original ban info */
count = chan->bans_count;
bans = smalloc(sizeof(char *) * count);
memcpy(bans, chan->bans, sizeof(char *) * count);
for (i = 0; i < count; i++) {
if (!u || match_usermask(bans[i], u))
set_cmode(sender, chan, "-b", bans[i]);
}
free(bans);
}
static void clear_umodes(const char *sender, Channel *chan, int32 modes)
{
struct c_userlist *cu;
LIST_FOREACH (cu, chan->users) {
int32 to_clear = cu->mode & modes; /* modes we need to clear */
int32 flag = 1; /* mode we're clearing now */
while (to_clear) {
if (flag == MODE_INVALID) {
log("BUG: hit invalid flag in clear_umodes!"
" modes to clear = %08X, user modes = %08X",
to_clear, cu->mode);
break;
}
if (to_clear & flag) {
char buf[3] = "-x";
buf[1] = mode_flag_to_char(flag, MODE_CHANUSER);
set_cmode(sender, chan, buf, cu->user->nick);
to_clear &= ~flag;
}
flag <<= 1;
}
cu->mode &= ~modes;
}
}
static void clear_users(const char *sender, Channel *chan, const char *reason)
{
char *av[3];
struct c_userlist *cu, *next;
/* Prevent anyone from coming back in. The ban will disappear
* once everyone's gone. */
set_cmode(sender, chan, "+b", "*!*@*");
set_cmode(NULL, chan); /* Flush modes out */
av[0] = chan->name;
av[2] = (char *)reason;
LIST_FOREACH_SAFE (cu, chan->users, next) {
av[1] = cu->user->nick;
send_channel_cmd(sender, "KICK %s %s :%s",
av[0], av[1], av[2]);
do_kick(sender, 3, av);
}
}
/*************************************************************************/
/* Set the nickname to be used to send commands in clear_channel() calls.
* If NULL, the server name is used; if PTR_INVALID, the name is not
* changed. Returns the old value of the sender, or the empty string if no
* nickname was set, in a static buffer.
*/
const char *set_clear_channel_sender(const char *newsender)
{
static char oldsender[NICKMAX];
strbcpy(oldsender, clear_channel_sender);
if (newsender != PTR_INVALID) {
if (newsender) {
strbcpy(clear_channel_sender, newsender);
} else {
*clear_channel_sender = 0;
}
}
return oldsender;
}
/*************************************************************************/
/* Remove a user from the IRC network. `source' is the nick which should
* generate the kill, or NULL for a server-generated kill.
*/
void kill_user(const char *source, const char *user, const char *reason)
{
char *av[2];
char buf[BUFSIZE];
if (!user || !*user)
return;
if (!source || !*source)
source = ServerName;
if (!reason)
reason = "";
snprintf(buf, sizeof(buf), "%s (%s)", source, reason);
av[0] = (char *)user;
av[1] = buf;
send_cmd(source, "KILL %s :%s", user, av[1]);
do_kill(source, 2, av);
}
/*************************************************************************/
/* Set the topic on a channel. `setter' must not be NULL. `source' is the
* nick to use to send the TOPIC message; if NULL, the server name is used.
*/
void set_topic(const char *source, Channel *c, const char *topic,
const char *setter, time_t t)
{
if (!source)
source = ServerName;
call_callback_5(cb_set_topic, source, c, topic, setter, t);
free(c->topic);
if (topic && *topic)
c->topic = sstrdup(topic);
else
c->topic = NULL;
strbcpy(c->topic_setter, setter);
if (call_callback_5(cb_set_topic, source, c, NULL, NULL, t) > 0)
return;
}
/*************************************************************************/
/*************************************************************************/
/* set_cmode(): Set modes for a channel and send those modes to remote
* servers. Using this routine eliminates the necessity to modify the
* internal Channel structure and send the command out separately, and also
* allows the modes for a channel to be collected up over several calls and
* sent out in a single command, decreasing network traffic (and scroll).
* This function should be called as either:
* set_cmode(sender, channel, modes, param1, param2...)
* to send one or more channel modes, or
* set_cmode(NULL, channel)
* to flush buffered modes for a channel (if `channel' is NULL, flushes
* buffered modes for all channels).
*
* NOTE: When setting modes with parameters, all parameters MUST be
* strings. Numeric parameters must be converted to strings (with
* snprintf() or the like) before being passed.
*/
#define MAXMODES 6 /* Maximum number of mode parameters */
#define MAXPARAMSLEN \
(510- NICKMAX - 6 - CHANMAX -(3+31+2*MAXMODES)-MAXMODES)
/* |:sender| | MODE | |#channel| | -...+...| { param}*
* Note that "-...+..." can contain at most 31 (binary) plus 2*MAXMODES
* (MAXMODES modes with parameters plus +/-) characters. */
static struct modedata {
time_t used;
Channel *channel;
char sender[NICKMAX];
int32 binmodes_on;
int32 binmodes_off;
char opmodes[MAXMODES*2+1];
char params[MAXMODES][MAXPARAMSLEN+1];
int nopmodes, nparams, paramslen;
Timeout *timeout; /* For timely flushing */
} modedata[MERGE_CHANMODES_MAX];
static void possibly_remove_mode(struct modedata *md, char mode,
const char *user);
static void add_mode_with_params(struct modedata *md, char mode, int is_add,
int params, const char *parambuf, int len);
static void flush_cmode(struct modedata *md);
static void flush_cmode_callback(Timeout *t);
/*************************************************************************/
void set_cmode(const char *sender, Channel *channel, ...)
{
va_list args;
const char *modes, *modes_orig;
struct modedata *md;
int which = -1, add;
int i;
char c;
/* If `sender' is NULL, flush out pending modes for the channel (for
* all channels if `channel' is also NULL) and return. */
if (!sender) {
for (i = 0; i < MERGE_CHANMODES_MAX; i++) {
if (modedata[i].used && (!channel || modedata[i].channel==channel))
flush_cmode(&modedata[i]);
}
return;
}
/* Get the mode string from the argument list; save the original value
* for error messages. */
va_start(args, channel);
modes = modes_orig = va_arg(args, const char *);
/* See if we already have pending modes for the channel; if so, reuse
* that entry (if the entry is for a different sender, flush out the
* pending modes first). */
for (i = 0; i < MERGE_CHANMODES_MAX; i++) {
if (modedata[i].used != 0 && modedata[i].channel == channel) {
if (irc_stricmp(modedata[i].sender, sender) != 0)
flush_cmode(&modedata[i]);
which = i;
break;
}
}
/* If there are no pending modes for the channel, look for an empty
* slot in the array. */
if (which < 0) {
for (i = 0; i < MERGE_CHANMODES_MAX; i++) {
if (modedata[i].used == 0) {
which = i;
break;
}
}
}
/* If no slots are free, we'll have to purge one. Find the oldest,
* send its modes out, then clear and reuse it. */
if (which < 0) {
int oldest = 0;
time_t oldest_time = modedata[0].used;
for (i = 1; i < MERGE_CHANMODES_MAX; i++) {
if (modedata[i].used < oldest_time) {
oldest_time = modedata[i].used;
oldest = i;
}
}
flush_cmode(&modedata[oldest]);
which = oldest;
}
/* Save a pointer to the entry, then set up sender and channel. */
md = &modedata[which];
strbcpy(md->sender, sender);
md->channel = channel;
/* Loop through and process all modes in the mode string. */
add = -2; /* -2 means we haven't warned about a missing leading +/- yet */
while ((c = *modes++) != 0) {
int32 flag;
int params, is_chanuser;
log_debug(2, "set_cmode(%s,%s): char=%c(%02X)",
sender, channel->name, c<0x20||c>0x7E ? '.' : c, c);
/* + and - are handled specially. */
if (c == '+') {
add = 1;
continue;
} else if (c == '-') {
add = 0;
continue;
}
/* If we see any other character without first seeing a + or -,
* note a bug in the logfile and move along. */
if (add < 0) {
if (add == -2) {
log("set_cmode(): BUG: mode string `%s' needs leading +/-",
modes_orig);
add = -1;
}
continue;
}
/* Find the flag value and parameter count for the character. */
is_chanuser = 0;
flag = mode_char_to_flag(c, MODE_CHANNEL);
params = mode_char_to_params(c, MODE_CHANNEL);
if (!flag) {
is_chanuser = 1;
flag = mode_char_to_flag(c, MODE_CHANUSER);
params = mode_char_to_params(c, MODE_CHANUSER);
if (!flag) {
log("set_cmode: bad mode '%c'", c);
continue;
}
}
params = (params >> (add*8)) & 0xFF;
if (params) { /* Mode with parameters */
char parambuf[BUFSIZE]; /* for putting the parameters in */
int len = 0;
if (params > MAXMODES) {
/* Sanity check */
fatal("set_cmode(): too many parameters (%d) for mode `%c'\n",
params, c);
}
/* Merge all the parameters into a single string (with no
* leading whitespace) */
for (i = 0; i < params; i++) {
const char *s = va_arg(args, const char *);
log_debug(2, "set_cmode(%s,%s): param=%s",
sender, channel->name, s);
len += snprintf(parambuf+len, sizeof(parambuf)-len,
"%s%s", len ? " " : "", s);
}
if (flag != MODE_INVALID) {
/* If it's a binary mode, see if we've set this mode before.
* If so (and if the nick is the same for channel user
* modes), remove it; the new one will be appended
* afterwards. Note that this assumes that setting each
* mode is independent, i.e. that -a+ba 2 1 has the same
* effect as +ba 2 1 by itself when +a is set. This doesn't
* work for +k/-k, so we let multiple such modes remain. */
if (c != 'k') {
possibly_remove_mode(md, c, is_chanuser ? parambuf : NULL);
}
}
add_mode_with_params(md, c, add, params, parambuf, len);
} else { /* Binary mode */
/* Note that `flag' should already be set to this value, since
* all channel user modes take parameters and thus will never
* get here, but just in case... */
flag = mode_char_to_flag(c, MODE_CHANNEL);
if (add) {
md->binmodes_on |= flag;
md->binmodes_off &= ~flag;
} else {
md->binmodes_off |= flag;
md->binmodes_on &= ~flag;
}
}
}
va_end(args);
md->used = time(NULL);
if (MergeChannelModes) {
if (!md->timeout) {
md->timeout = add_timeout_ms(MergeChannelModes,
flush_cmode_callback, 0);
md->timeout->data = md;
}
}
}
/*************************************************************************/
/* Remove the most recent occurrence of mode `mode' from the mode list if
* there is one, provided either `user' is NULL or the parameter associated
* with the previous mode is equal (according to irc_stricmp()) to the
* string pointed to by `user'.
*/
static void possibly_remove_mode(struct modedata *md, char mode,
const char *user)
{
int i;
char *s;
log_debug(2, "possibly_remove_mode %c from %.*s%s%s",
mode, md->nopmodes*2, md->opmodes,
user ? " for user " : "", user ? user : "");
for (i = md->nopmodes-1; i >= 0; i--) {
if (md->opmodes[i*2+1] == mode) {
/* We've already set this mode once */
if (user) {
/* Only remove the old mode if the nick matches */
if (irc_stricmp(md->params[i], user) != 0)
continue;
}
/* Remove the mode */
log_debug(2, " removing mode %d/%d", i, md->nopmodes);
md->nopmodes--;
s = md->opmodes + (i*2);
memmove(s, s+2, strlen(s+2)+1);
/* Count parameters for this mode and decrement total by count */
md->nparams--;
s = md->params[i]-1;
while ((s = strchr(s+1, ' ')) != NULL)
md->nparams--;
/* Move parameter pointers */
if (i < md->nopmodes) {
memmove(md->params+i, md->params+i+1,
sizeof(md->params[0])*(md->nopmodes-i));
}
/* Clear tail slot */
memset(md->params+md->nopmodes, 0, sizeof(md->params[0]));
}
}
}
/*************************************************************************/
/* Add a single mode with parameters to the given mode data structure.
* `params' is the number of parameters, `parambuf' is the space-separated
* parameter list, and `len' is strlen(parambuf).
*/
static void add_mode_with_params(struct modedata *md, char mode, int is_add,
int params, const char *parambuf, int len)
{
char *s;
if (len < 0) {
log("add_mode_with_params(): BUG: parameter length < 0 (%d)", len);
len = 0;
}
log_debug(2, "add_mode_with_params: current=%.*s mode=%c add=%d"
" params=%d[%.*s]", md->nopmodes*2, md->opmodes, mode, is_add,
params, len, parambuf);
/* Check for overflow of parameter count or length */
if (md->nparams+params > MAXMODES
|| md->paramslen+1+len > MAXPARAMSLEN
) {
/* Doesn't fit, so flush modes out first */
struct modedata mdtmp = *md;
log_debug(2, "add_mode_with_params: ...flushing first");
flush_cmode(md);
memcpy(md->sender, mdtmp.sender, sizeof(md->sender));
md->channel = mdtmp.channel;
md->used = time(NULL);
}
s = md->opmodes + 2*md->nopmodes;
*s++ = is_add ? '+' : '-';
*s++ = mode;
if (len > sizeof(md->params[0])-1) {
log("set_cmode(): Parameter string for mode %c%c is too long,"
" truncating to %d characters",
is_add ? '+' : '-', mode, sizeof(md->params[0])-1);
len = sizeof(md->params[0])-1;
}
if (len > 0)
memcpy(md->params[md->nopmodes], parambuf, len);
md->params[md->nopmodes][len] = 0;
md->nopmodes++;
md->nparams += params;
if (md->paramslen)
md->paramslen++;
md->paramslen += len;
/* If the parameters for this mode alone exceed MAXPARAMSLEN,
* we'll now have a string longer than MAXPARAMSLEN in
* md->params; not much we can do about it, though, and it'll
* get flushed next time around anyway. */
}
/*************************************************************************/
/* Flush out pending mode changes for the given mode data structure. If
* `clear' is nonzero, clear the entry, else leave it alone.
*/
static void flush_cmode(struct modedata *md)
{
char buf[BUFSIZE], *s;
char *argv[MAXMODES+2];
int len = 0, i;
char lastc = 0;
/* Clear timeout for this entry if one is set */
if (md->timeout) {
del_timeout(md->timeout);
md->timeout = NULL;
}
if (!md->channel) {
/* This entry is unused, just return */
goto done;
}
if (!md->binmodes_on && !md->binmodes_off && !*md->opmodes) {
/* No actual modes here */
goto done;
}
if (debug >= 2) {
char onbuf[512];
strbcpy(onbuf, mode_flags_to_string(md->binmodes_on,MODE_CHANNEL));
log_debug(2, "flush_cmode(%s): bin_on=%s bin_off=%s opmodes=%d(%.*s)",
md->channel->name, onbuf,
mode_flags_to_string(md->binmodes_off, MODE_CHANNEL),
md->nopmodes, md->nopmodes*2, md->opmodes);
}
/* Note that - must come before + because some servers (Unreal, others?)
* ignore +s if followed by -p. */
if (md->binmodes_off) {
len += snprintf(buf+len, sizeof(buf)-len, "-%s",
mode_flags_to_string(md->binmodes_off, MODE_CHANNEL));
lastc = '-';
}
if (md->binmodes_on) {
len += snprintf(buf+len, sizeof(buf)-len, "+%s",
mode_flags_to_string(md->binmodes_on, MODE_CHANNEL));
lastc = '+';
}
s = md->opmodes;
while (*s) {
if (*s == lastc) {
/* +/- matches last mode change */
s++;
} else {
if (len < sizeof(buf)-1)
buf[len++] = *s;
else
fatal("BUG: buf too small in flush_cmode() (1)");
lastc = *s++;
}
if (len < sizeof(buf)-1) {
buf[len++] = *s;
buf[len] = 0;
} else {
fatal("BUG: buf too small in flush_cmode() (2)");
}
s++;
}
for (i = 0; i < md->nopmodes; i++) {
if (*md->params[i])
len += snprintf(buf+len, sizeof(buf)-len, " %s", md->params[i]);
}
/* Actually send the command */
send_cmode_cmd(md->sender, md->channel->name, "%s", buf);
/* Split buffer back up into individual parameters for do_cmode().
* This is inefficient, but taking the faster route of setting modes
* when they are sent to set_cmode() runs the risk of temporary desyncs.
* (Example: SomeNick enters #channel -> autoop, but delayed -> SomeNick
* does /cs op SomeNick -> ChanServ says "SomeNick is already opped" ->
* SomeNick goes "Huh?")
*/
argv[0] = md->channel->name;
s = buf;
for (i = 0; i <= md->nparams; i++) {
argv[i+1] = s;
s = strchr(s, ' ');
if (!s) {
md->nparams = i;
break;
}
*s++ = 0;
}
/* Clear md->channel so a recursive set_cmode() doesn't find this entry
* and try to use/flush it */
md->channel = NULL;
/* Adjust our idea of the channel modes */
do_cmode(md->sender, md->nparams+2, argv);
done:
/* Clear entry and return */
memset(md, 0, sizeof(*md));
}
/*************************************************************************/
/* Timeout called to flush mode changes for a channel after
* `MergeChannelModes' seconds of inactivity.
*/
static void flush_cmode_callback(Timeout *t)
{
flush_cmode((struct modedata *)t->data);
}
/*************************************************************************/
/*
* Local variables:
* c-file-style: "stroustrup"
* c-file-offsets: ((case-label . *) (statement-case-intro . *))
* indent-tabs-mode: nil
* End:
*
* vim: expandtab shiftwidth=4:
*/

500
channels.c Normal file
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/* Channel-handling routines.
*
* IRC Services is copyright (c) 1996-2009 Andrew Church.
* E-mail: <achurch@achurch.org>
* Parts written by Andrew Kempe and others.
* This program is free but copyrighted software; see the file GPL.txt for
* details.
*/
#include "services.h"
#include "modules.h"
/*************************************************************************/
#define HASHFUNC(key) DEFAULT_HASHFUNC(key+1)
#define add_channel static add_channel
#define del_channel static del_channel
#include "hash.h"
DEFINE_HASH(channel, Channel, name)
#undef add_channel
#undef del_channel
static int cb_create = -1;
static int cb_delete = -1;
static int cb_join = -1;
static int cb_join_check = -1;
static int cb_mode = -1;
static int cb_mode_change = -1;
static int cb_umode_change = -1;
static int cb_topic = -1;
/*************************************************************************/
/*************************************************************************/
int channel_init(int ac, char **av)
{
cb_create = register_callback("channel create");
cb_delete = register_callback("channel delete");
cb_join = register_callback("channel JOIN");
cb_join_check = register_callback("channel JOIN check");
cb_mode = register_callback("channel MODE");
cb_mode_change = register_callback("channel mode change");
cb_umode_change = register_callback("channel umode change");
cb_topic = register_callback("channel TOPIC");
if (cb_create < 0 || cb_delete < 0 || cb_join < 0 || cb_join_check < 0
|| cb_mode < 0 || cb_mode_change < 0 || cb_umode_change < 0
|| cb_topic < 0
) {
log("channel_init: register_callback() failed\n");
return 0;
}
return 1;
}
/*************************************************************************/
void channel_cleanup(void)
{
Channel *c;
for (c = first_channel(); c; c = next_channel())
del_channel(c);
unregister_callback(cb_topic);
unregister_callback(cb_umode_change);
unregister_callback(cb_mode_change);
unregister_callback(cb_mode);
unregister_callback(cb_join_check);
unregister_callback(cb_join);
unregister_callback(cb_delete);
unregister_callback(cb_create);
}
/*************************************************************************/
/* Return statistics. Pointers are assumed to be valid. */
void get_channel_stats(long *nrec, long *memuse)
{
long count = 0, mem = 0;
Channel *chan;
struct c_userlist *cu;
int i;
for (chan = first_channel(); chan; chan = next_channel()) {
count++;
mem += sizeof(*chan);
if (chan->topic)
mem += strlen(chan->topic)+1;
if (chan->key)
mem += strlen(chan->key)+1;
ARRAY_FOREACH (i, chan->bans) {
mem += sizeof(char *);
if (chan->bans[i])
mem += strlen(chan->bans[i])+1;
}
ARRAY_FOREACH (i, chan->excepts) {
mem += sizeof(char *);
if (chan->excepts[i])
mem += strlen(chan->excepts[i])+1;
}
LIST_FOREACH (cu, chan->users)
mem += sizeof(*cu);
}
*nrec = count;
*memuse = mem;
}
/*************************************************************************/
/*************************************************************************/
/* Add/remove a user to/from a channel, creating or deleting the channel as
* necessary. If creating the channel, restore mode lock and topic as
* necessary. Also check for auto-opping and auto-voicing. If a mode is
* given, it is assumed to have been set by the remote server.
* Returns the Channel structure for the given channel, or NULL if the user
* was refused access to the channel (by the join check callback).
*/
Channel *chan_adduser(User *user, const char *chan, int32 modes)
{
Channel *c = get_channel(chan);
int newchan = !c;
struct c_userlist *u;
if (call_callback_2(cb_join_check, chan, user) > 0)
return NULL;
if (newchan) {
log_debug(1, "Creating channel %s", chan);
/* Allocate pre-cleared memory */
c = scalloc(sizeof(Channel), 1);
strbcpy(c->name, chan);
c->creation_time = time(NULL);
add_channel(c);
call_callback_3(cb_create, c, user, modes);
}
u = smalloc(sizeof(struct c_userlist));
LIST_INSERT(u, c->users);
u->user = user;
u->mode = modes;
u->flags = 0;
call_callback_2(cb_join, c, u);
return c;
}
void chan_deluser(User *user, Channel *c)
{
struct c_userlist *u;
int i;
LIST_SEARCH_SCALAR(c->users, user, user, u);
if (!u) {
log("channel: BUG: chan_deluser() called for %s in %s but they "
"were not found on the channel's userlist.",
user->nick, c->name);
return;
}
LIST_REMOVE(u, c->users);
free(u);
if (!c->users) {
log_debug(1, "Deleting channel %s", c->name);
call_callback_1(cb_delete, c);
set_cmode(NULL, c); /* make sure nothing's left buffered */
free(c->topic);
free(c->key);
free(c->link);
free(c->flood);
for (i = 0; i < c->bans_count; i++)
free(c->bans[i]);
free(c->bans);
for (i = 0; i < c->excepts_count; i++)
free(c->excepts[i]);
free(c->excepts);
del_channel(c);
free(c);
}
}
/*************************************************************************/
/* Search for the given ban on the given channel, and return the index into
* chan->bans[] if found, -1 otherwise. Nicknames are compared using
* irc_stricmp(), usernames and hostnames using stricmp().
*/
static int find_ban(const Channel *chan, const char *ban)
{
char *s, *t;
int i;
t = strchr(ban, '!');
i = 0;
ARRAY_FOREACH (i, chan->bans) {
s = strchr(chan->bans[i], '!');
if (s && t) {
if (s-(chan->bans[i]) == t-ban
&& irc_strnicmp(chan->bans[i], ban, s-(chan->bans[i])) == 0
&& stricmp(s+1, t+1) == 0
) {
return i;
}
} else if (!s && !t) {
/* Bans without '!' should be impossible; just
* do a case-insensitive compare */
if (stricmp(chan->bans[i], ban) == 0)
return i;
}
}
return -1;
}
/*************************************************************************/
/* Search for the given ban (case-insensitive) on the channel; return 1 if
* it exists, 0 if not.
*/
int chan_has_ban(const char *chan, const char *ban)
{
Channel *c = get_channel(chan);
if (!c)
return 0;
return find_ban(c, ban) >= 0;
}
/*************************************************************************/
/* Handle a channel MODE command.
* When called internally to modify channel modes, callers may assume that
* the contents of the argument strings will not be modified.
*/
/* Hack to allow -o+v to work without having to search the whole channel
* user list for changed modes. */
#define MAX_CUMODES 16
static struct {
struct c_userlist *user;
int32 add, remove;
} cumode_changes[MAX_CUMODES];
static int cumode_count = 0;
static void do_cumode(const char *source, Channel *chan, int32 flag, int add,
const char *nick);
static void finish_cumode(const char *source, Channel *chan);
void do_cmode(const char *source, int ac, char **av)
{
Channel *chan;
char *s;
int add = 1; /* 1 if adding modes, 0 if deleting */
char *modestr;
chan = get_channel(av[0]);
if (!chan) {
log_debug(1, "channel: MODE %s for nonexistent channel %s",
merge_args(ac-1, av+1), av[0]);
return;
}
if ((protocol_features & PF_MODETS_FIRST) && isdigit(av[1][0])) {
ac--;
av++;
}
modestr = av[1];
if (!NoBouncyModes) {
/* Count identical server mode changes per second (mode bounce check)*/
/* Doesn't trigger on +/-[bov] or other multiply-settable modes */
static char multimodes[BUFSIZE];
if (!*multimodes) {
int i = 0;
i = snprintf(multimodes, sizeof(multimodes), "%s",
chanmode_multiple);
snprintf(multimodes+i, sizeof(multimodes)-i, "%s",
mode_flags_to_string(MODE_ALL,MODE_CHANUSER));
}
if (strchr(source, '.') && strcmp(source, ServerName) != 0
&& !modestr[strcspn(modestr, multimodes)]
) {
static char lastmodes[BUFSIZE];
if (time(NULL) != chan->server_modetime
|| strcmp(modestr, lastmodes) != 0
) {
chan->server_modecount = 0;
chan->server_modetime = time(NULL);
strbcpy(lastmodes, modestr);
}
chan->server_modecount++;
}
}
s = modestr;
ac -= 2;
av += 2;
cumode_count = 0;
while (*s) {
char modechar = *s++;
int32 flag;
int params;
if (modechar == '+') {
add = 1;
continue;
} else if (modechar == '-') {
add = 0;
continue;
} else if (add < 0) {
continue;
}
/* Check for it as a channel user mode */
flag = mode_char_to_flag(modechar, MODE_CHANUSER);
if (flag) {
if (--ac < 0) {
log("channel: MODE %s %s: missing parameter for %c%c",
chan->name, modestr, add ? '+' : '-', modechar);
break;
}
do_cumode(source, chan, flag, add, *av++);
continue;
}
/* Nope, must be a regular channel mode */
flag = mode_char_to_flag(modechar, MODE_CHANNEL);
if (!flag)
continue;
if (flag == MODE_INVALID)
flag = 0;
params = mode_char_to_params(modechar, MODE_CHANNEL);
params = (params >> (add*8)) & 0xFF;
if (ac < params) {
log("channel: MODE %s %s: missing parameter(s) for %c%c",
chan->name, modestr, add ? '+' : '-', modechar);
break;
}
if (call_callback_5(cb_mode, source, chan, modechar, add, av) <= 0) {
if (add)
chan->mode |= flag;
else
chan->mode &= ~flag;
switch (modechar) {
case 'k':
free(chan->key);
if (add)
chan->key = sstrdup(av[0]);
else
chan->key = NULL;
break;
case 'l':
if (add)
chan->limit = atoi(av[0]);
else
chan->limit = 0;
break;
case 'b': {
int i = find_ban(chan, av[0]);
if (add) {
if (i < 0) { /* Don't add if it already exists */
ARRAY_EXTEND(chan->bans);
chan->bans[chan->bans_count-1] = sstrdup(av[0]);
}
} else {
if (i >= 0) {
free(chan->bans[i]);
ARRAY_REMOVE(chan->bans, i);
} else {
log("channel: MODE %s -b %s: ban not found",
chan->name, *av);
}
}
break;
} /* case 'b' */
} /* switch (modechar) */
} /* if (callback() <= 0) */
ac -= params;
av += params;
} /* while (*s) */
call_callback_2(cb_mode_change, source, chan);
finish_cumode(source, chan);
}
/* Modify a user's CUMODE. */
static void do_cumode(const char *source, Channel *chan, int32 flag, int add,
const char *nick)
{
struct c_userlist *u;
User *user;
int i;
user = get_user(nick);
if (!user) {
log_debug(1, "channel: MODE %s %c%c for nonexistent user %s",
chan->name, add ? '+' : '-',
mode_flag_to_char(flag, MODE_CHANUSER), nick);
return;
}
LIST_SEARCH_SCALAR(chan->users, user, user, u);
if (!u) {
log("channel: MODE %s %c%c for user %s not on channel",
chan->name, add ? '+' : '-',
mode_flag_to_char(flag, MODE_CHANUSER), nick);
return;
}
if (flag == MODE_INVALID)
return;
for (i = 0; i < cumode_count; i++) {
if (cumode_changes[i].user == u)
break;
}
if (i >= MAX_CUMODES) {
finish_cumode(source, chan);
i = cumode_count = 0;
}
cumode_changes[i].user = u;
if (i >= cumode_count) {
cumode_changes[i].add = cumode_changes[i].remove = 0;
}
if (add) {
cumode_changes[i].add |= flag;
cumode_changes[i].remove &= ~flag;
} else {
cumode_changes[i].remove |= flag;
cumode_changes[i].add &= ~flag;
}
if (i >= cumode_count)
cumode_count = i+1;
}
static void finish_cumode(const char *source, Channel *chan)
{
int i;
for (i = 0; i < cumode_count; i++) {
struct c_userlist *u = cumode_changes[i].user;
int32 oldmode = u->mode;
u->mode |= cumode_changes[i].add;
u->mode &= ~cumode_changes[i].remove;
if (u->mode != oldmode)
call_callback_4(cb_umode_change, source, chan, u, oldmode);
}
cumode_count = 0;
}
/*************************************************************************/
/* Handle a TOPIC command. */
void do_topic(const char *source, int ac, char **av)
{
Channel *c = get_channel(av[0]);
const char *topic;
char *s;
if (!c) {
log_debug(1, "channel: TOPIC %s for nonexistent channel %s",
merge_args(ac-1, av+1), av[0]);
return;
}
s = strchr(av[1], '!');
if (s)
*s = 0;
if (ac > 3)
topic = av[3];
else
topic = "";
if (call_callback_4(cb_topic, c, topic, av[1], strtotime(av[2],NULL)) > 0)
return;
strbcpy(c->topic_setter, av[1]);
if (c->topic) {
free(c->topic);
c->topic = NULL;
}
if (ac > 3 && *av[3])
c->topic = sstrdup(av[3]);
}
/*************************************************************************/
/*
* Local variables:
* c-file-style: "stroustrup"
* c-file-offsets: ((case-label . *) (statement-case-intro . *))
* indent-tabs-mode: nil
* End:
*
* vim: expandtab shiftwidth=4:
*/

70
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/* Online channel data structure.
*
* IRC Services is copyright (c) 1996-2009 Andrew Church.
* E-mail: <achurch@achurch.org>
* Parts written by Andrew Kempe and others.
* This program is free but copyrighted software; see the file GPL.txt for
* details.
*/
#ifndef CHANNELS_H
#define CHANNELS_H
/*************************************************************************/
struct channel_ {
Channel *next, *prev;
char name[CHANMAX];
ChannelInfo *ci; /* Corresponding ChannelInfo */
time_t creation_time; /* When channel was created */
char *topic;
char topic_setter[NICKMAX]; /* Who set the topic */
time_t topic_time; /* When topic was set */
int32 mode; /* CMODE_* (binary) channel modes */
int32 limit; /* 0 if none */
char *key; /* NULL if none */
char *link; /* +L (Unreal, trircd) */
char *flood; /* +f (Unreal, etc.) */
int32 joindelay; /* +J (trircd) */
int32 joinrate1, joinrate2; /* +j (Bahamut) */
char **bans;
int32 bans_count;
char **excepts;
int32 excepts_count;
char **invites;
int32 invites_count;
struct c_userlist {
struct c_userlist *next, *prev;
User *user;
int32 mode; /* CUMODE_* modes (chanop, voice) */
int16 flags; /* CUFLAG_* flags (below) */
} *users;
time_t server_modetime; /* Time of last server MODE */
time_t chanserv_modetime; /* Time of last check_modes() */
int16 server_modecount; /* Number of server MODEs this second*/
int16 chanserv_modecount; /* Number of check_mode()'s this sec */
int16 bouncy_modes; /* Did we fail to set modes here? */
};
/* Set by ChanServ if it deops a user on joining a channel */
#define CUFLAG_DEOPPED 0x0001
/*************************************************************************/
#endif
/*
* Local variables:
* c-file-style: "stroustrup"
* c-file-offsets: ((case-label . *) (statement-case-intro . *))
* indent-tabs-mode: nil
* End:
*
* vim: expandtab shiftwidth=4:
*/

242
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/* Routines for looking up commands in a *Serv command list.
*
* IRC Services is copyright (c) 1996-2009 Andrew Church.
* E-mail: <achurch@achurch.org>
* Parts written by Andrew Kempe and others.
* This program is free but copyrighted software; see the file GPL.txt for
* details.
*/
#include "services.h"
#include "modules.h"
#include "commands.h"
#include "language.h"
/*************************************************************************/
typedef struct commandlist_ CommandList;
typedef struct commandarray_ CommandArray;
struct commandlist_ {
CommandList *next, *prev;
Module *id;
CommandArray *first_array;
};
struct commandarray_ {
CommandArray *next, *prev;
Command *commands;
};
/*************************************************************************/
/* List of all commands registered. */
static CommandList *cmdlist;
/*************************************************************************/
/*************************************************************************/
/* Set up a new command list using the given module pointer as an ID value.
* Fails if a command list associated with `id' already exists.
*/
int new_commandlist(Module *id)
{
CommandList *cl;
LIST_SEARCH_SCALAR(cmdlist, id, id, cl);
if (cl)
return 0;
cl = smalloc(sizeof(*cl));
cl->id = id;
cl->first_array = NULL;
LIST_INSERT(cl, cmdlist);
return 1;
}
/*************************************************************************/
/* Register a command array under the given ID. Fails if there is no
* command list associated with `id', `array' is NULL, `array' has already
* been added to the list, or there are multiple command entries in `array'
* with the same name (case-insensitive). If an entry in `array' has the
* same name as a previously-registered entry, the entry in `array' will
* take precendence, and a pointer to the previous entry will be stored in
* the `next' field of the entry.
*/
int register_commands(Module *id, Command *array)
{
CommandList *cl;
CommandArray *ca;
Command *c, *c2;
/* Basic sanity checking */
if (!array)
return 0;
LIST_SEARCH_SCALAR(cmdlist, id, id, cl);
if (!cl)
return 0;
LIST_SEARCH_SCALAR(cl->first_array, commands, array, ca);
if (ca)
return 0;
/* Check for duplicate commands and set `next' pointers */
for (c = array; c->name; c++) {
for (c2 = c+1; c2->name; c2++) {
if (stricmp(c->name, c2->name) == 0)
return 0;
}
c->next = lookup_cmd(id, c->name);
}
/* All's well, insert it in the list and return success */
ca = smalloc(sizeof(*ca));
ca->commands = array;
LIST_INSERT(ca, cl->first_array);
return 1;
}
/*************************************************************************/
/* Unregister a command array from the given ID. Fails if there is no
* command list associated with `id' or `array' was not in the list in the
* first place.
*/
int unregister_commands(Module *id, Command *array)
{
CommandList *cl;
CommandArray *ca;
LIST_SEARCH_SCALAR(cmdlist, id, id, cl);
if (!cl)
return 0;
LIST_SEARCH_SCALAR(cl->first_array, commands, array, ca);
if (!ca)
return 0;
LIST_REMOVE(ca, cl->first_array);
free(ca);
return 1;
}
/*************************************************************************/
/* Delete the command list associated with the given ID. Fails if there is
* no command list associated with `id' or the command list is not empty.
*/
int del_commandlist(Module *id)
{
CommandList *cl;
LIST_SEARCH_SCALAR(cmdlist, id, id, cl);
if (!cl || cl->first_array)
return 0;
LIST_REMOVE(cl, cmdlist);
free(cl);
return 1;
}
/*************************************************************************/
/*************************************************************************/
/* Returns the Command structure associated with the given command for the
* given command list (`id'), or NULL if no such command exists.
*/
Command *lookup_cmd(Module *id, const char *name)
{
CommandList *cl;
CommandArray *ca;
Command *c;
LIST_SEARCH_SCALAR(cmdlist, id, id, cl);
if (!cl)
return NULL;
LIST_FOREACH (ca, cl->first_array) {
for (c = ca->commands; c->name; c++) {
if (stricmp(c->name, name) == 0)
return c;
}
}
return NULL;
}
/*************************************************************************/
/* Run the routine for the given command, if it exists and the user has
* privilege to do so; if not, print an appropriate error message.
*/
void run_cmd(const char *service, User *u, Module *id, const char *cmd)
{
Command *c = lookup_cmd(id, cmd);
if (c && c->routine) {
if ((c->has_priv == NULL) || c->has_priv(u))
c->routine(u);
else
notice_lang(service, u, ACCESS_DENIED);
} else {
notice_lang(service, u, UNKNOWN_COMMAND_HELP, cmd, service);
}
}
/*************************************************************************/
/* Print a help message for the given command. Multiple spaces between
* words are compressed to a single space before looking up the command
* (this will cause `cmd' to be modified).
*/
void help_cmd(const char *service, User *u, Module *id, char *cmd)
{
Command *c;
char *s;
s = cmd-1;
while ((s = strpbrk(s+1, " \t")) != NULL) {
char *t = s + strspn(s, " \t");
if (t > s+1)
memmove(s+1, t, strlen(t)+1);
}
c = lookup_cmd(id, cmd);
if (c) {
const char *p1 = c->help_param1,
*p2 = c->help_param2,
*p3 = c->help_param3,
*p4 = c->help_param4;
if (c->helpmsg_all >= 0)
notice_help(service, u, c->helpmsg_all, p1, p2, p3, p4);
if (is_oper(u)) {
if (c->helpmsg_oper >= 0)
notice_help(service, u, c->helpmsg_oper, p1, p2, p3, p4);
else if (c->helpmsg_all < 0)
notice_lang(service, u, NO_HELP_AVAILABLE, cmd);
} else {
if (c->helpmsg_reg >= 0)
notice_help(service, u, c->helpmsg_reg, p1, p2, p3, p4);
else if (c->helpmsg_all < 0)
notice_lang(service, u, NO_HELP_AVAILABLE, cmd);
}
} else {
notice_lang(service, u, NO_HELP_AVAILABLE, cmd);
}
}
/*************************************************************************/
/*
* Local variables:
* c-file-style: "stroustrup"
* c-file-offsets: ((case-label . *) (statement-case-intro . *))
* indent-tabs-mode: nil
* End:
*
* vim: expandtab shiftwidth=4:
*/

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/* Declarations for command data.
*
* IRC Services is copyright (c) 1996-2009 Andrew Church.
* E-mail: <achurch@achurch.org>
* Parts written by Andrew Kempe and others.
* This program is free but copyrighted software; see the file GPL.txt for
* details.
*/
#ifndef COMMANDS_H
#define COMMANDS_H
/* Note that modules.h MUST be included before this file (for the Module
* type). */
/*************************************************************************/
/* Structure for information about a *Serv command. */
typedef struct command_ Command;
struct command_ {
const char *name;
void (*routine)(User *u);
int (*has_priv)(const User *u); /* Returns 1 if user may use cmd, else 0 */
int helpmsg_all; /* Displayed to all users; -1 = no message */
int helpmsg_reg; /* Displayed to regular users only */
int helpmsg_oper; /* Displayed to IRC operators only */
const char *help_param1;
const char *help_param2;
const char *help_param3;
const char *help_param4;
Command *next; /* Next command with this name */
};
/*************************************************************************/
/* Commands must be registered with Services to be usable; an array of
* Command structures (terminated with name == NULL) can be registered and
* unregistered with the following routines. All routines return 1 on
* success, 0 on failure. ("Failure" occurs only when parameters are
* invalid.)
*/
/* Set up a new command list using the given module pointer as an ID value.
* Fails if a command list associated with `id' already exists. */
extern int new_commandlist(Module *id);
/* Register a command array under the given ID. Fails if there is no
* command list associated with `id', `array' is NULL, `array' has already
* been added to the list, or there are multiple command entries in `array'
* with the same name (case-insensitive). If an entry in `array' has the
* same name as a previously-registered entry, the entry in `array' will
* take precendence, and a pointer to the previous entry will be stored in
* the `next' field of the entry. */
extern int register_commands(Module *id, Command *array);
/* Unregister a command array from the given ID. Fails if there is no
* command list associated with `id' or `array' was not in the list in the
* first place. */
extern int unregister_commands(Module *id, Command *array);
/* Delete the command list associated with the given ID. Fails if there is
* no command list associated with `id' or the command list is not empty. */
extern int del_commandlist(Module *id);
/*************************************************************************/
/* Routines for looking up and doing other things with commands. */
/* Returns the Command structure associated with the given command for the
* given command list (`id'), or NULL if no such command exists. */
extern Command *lookup_cmd(Module *id, const char *name);
/* Runs the routine associated with the given command, sending a help
* message if there is no such command or the user does not have privileges
* to use the command. Equivalent to
* lookup_cmd(id,name)->routine(u)
* with privilege and error checking. */
extern void run_cmd(const char *service, User *u, Module *id, const char *cmd);
/* Sends the help message associated with the given command, or a generic
* "command not found" message if there is no such command. Multiple
* spaces in `cmd' will be compressed to a single space (thus modifying the
* string). */
extern void help_cmd(const char *service, User *u, Module *id, char *cmd);
/*************************************************************************/
#endif /* COMMANDS_H */
/*
* Local variables:
* c-file-style: "stroustrup"
* c-file-offsets: ((case-label . *) (statement-case-intro . *))
* indent-tabs-mode: nil
* End:
*
* vim: expandtab shiftwidth=4:
*/

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/* Compatibility routines.
*
* IRC Services is copyright (c) 1996-2009 Andrew Church.
* E-mail: <achurch@achurch.org>
* Parts written by Andrew Kempe and others.
* This program is free but copyrighted software; see the file GPL.txt for
* details.
*/
#include "services.h"
#if !HAVE_HSTRERROR
# include <netdb.h>
#endif
/*************************************************************************/
#if !HAVE_HSTRERROR
/* hstrerror: return an error message for the given h_errno code. */
const char *hstrerror(int h_errnum)
{
switch (h_errnum) {
case HOST_NOT_FOUND: return "Host not found";
case TRY_AGAIN: return "Host not found, try again";
case NO_RECOVERY: return "Nameserver error";
case NO_DATA: return "No data of requested type";
default: return "Unknown error";
}
}
#endif /* !HAVE_HSTRERROR */
/*************************************************************************/
#if !HAVE_SNPRINTF
/* [v]snprintf: Like [v]sprintf, but don't write more than len bytes
* (including null terminator). Return the number of bytes
* written.
*/
#if BAD_SNPRINTF
int vsnprintf(char *buf, size_t len, const char *fmt, va_list args)
{
if (len <= 0)
return 0;
*buf = 0;
#undef vsnprintf
vsnprintf(buf, len, fmt, args);
#define vsnprintf my_vsnprintf
buf[len-1] = 0;
return strlen(buf);
}
#endif /* BAD_SNPRINTF */
int snprintf(char *buf, size_t len, const char *fmt, ...)
{
va_list args;
int ret;
va_start(args, fmt);
ret = vsnprintf(buf, len, fmt, args);
va_end(args);
return ret;
}
#endif /* !HAVE_SNPRINTF */
/*************************************************************************/
#if !HAVE_STRTOK
/* glibc 2.2 (RedHat 7.0) has a broken strtok--it dies if called with a
* NULL parameter after returning NULL once. glibc and possibly other
* libraries also return non-NULL for strtok(NULL, "") even after
* returning NULL for strtok(NULL, " ").
*/
char *strtok(char *str, const char *delim)
{
static char *current = NULL;
char *ret;
if (str)
current = str;
if (!current)
return NULL;
current += strspn(current, delim);
ret = *current ? current : NULL;
current += strcspn(current, delim);
if (!*current)
current = NULL;
else
*current++ = 0;
return ret;
}
#endif /* !HAVE_STRTOK */
/*************************************************************************/
#if !HAVE_STRICMP && !HAVE_STRCASECMP
/* stricmp, strnicmp: Case-insensitive versions of strcmp() and
* strncmp().
*/
int stricmp(const char *s1, const char *s2)
{
register int c;
while ((c = tolower(*s1)) == tolower(*s2)) {
if (c == 0)
return 0;
s1++;
s2++;
}
if (c < tolower(*s2))
return -1;
return 1;
}
int strnicmp(const char *s1, const char *s2, size_t len)
{
register int c;
if (!len)
return 0;
while ((c = tolower(*s1)) == tolower(*s2) && len > 0) {
if (c == 0 || --len == 0)
return 0;
s1++;
s2++;
}
if (c < tolower(*s2))
return -1;
return 1;
}
#endif
/*************************************************************************/
#if !HAVE_STRDUP && !MEMCHECKS
char *strdup(const char *s)
{
char *new = malloc(strlen(s)+1);
if (new)
strcpy(new, s);
return new;
}
#endif
/*************************************************************************/
#if !HAVE_STRSPN
size_t strspn(const char *s, const char *accept)
{
size_t i = 0;
while (*s && strchr(accept, *s))
++i, ++s;
return i;
}
size_t strcspn(const char *s, const char *reject)
{
size_t i = 0;
while (*s && !strchr(reject, *s))
++i, ++s;
return i;
}
#endif
/*************************************************************************/
#if !HAVE_STRERROR
# if HAVE_SYS_ERRLIST
extern char *sys_errlist[];
# endif
char *strerror(int errnum)
{
# if HAVE_SYS_ERRLIST
return sys_errlist[errnum];
# else
static char buf[20];
snprintf(buf, sizeof(buf), "Error %d", errnum);
return buf;
# endif
}
#endif
/*************************************************************************/
#if !HAVE_STRSIGNAL
char *strsignal(int signum)
{
static char buf[32];
switch (signum) {
case SIGHUP: strbcpy(buf, "Hangup"); break;
case SIGINT: strbcpy(buf, "Interrupt"); break;
case SIGQUIT: strbcpy(buf, "Quit"); break;
#ifdef SIGILL
case SIGILL: strbcpy(buf, "Illegal instruction"); break;
#endif
#ifdef SIGABRT
case SIGABRT: strbcpy(buf, "Abort"); break;
#endif
#if defined(SIGIOT) && (!defined(SIGABRT) || SIGIOT != SIGABRT)
case SIGIOT: strbcpy(buf, "IOT trap"); break;
#endif
#ifdef SIGBUS
case SIGBUS: strbcpy(buf, "Bus error"); break;
#endif
case SIGFPE: strbcpy(buf, "Floating point exception"); break;
case SIGKILL: strbcpy(buf, "Killed"); break;
case SIGUSR1: strbcpy(buf, "User signal 1"); break;
case SIGSEGV: strbcpy(buf, "Segmentation fault"); break;
case SIGUSR2: strbcpy(buf, "User signal 2"); break;
case SIGPIPE: strbcpy(buf, "Broken pipe"); break;
case SIGALRM: strbcpy(buf, "Alarm clock"); break;
case SIGTERM: strbcpy(buf, "Terminated"); break;
case SIGSTOP: strbcpy(buf, "Stopped (signal)"); break;
case SIGTSTP: strbcpy(buf, "Stopped"); break;
case SIGIO: strbcpy(buf, "I/O error"); break;
default: snprintf(buf, sizeof(buf), "Signal %d\n", signum);
break;
}
return buf;
}
#endif
/*************************************************************************/
/*
* Local variables:
* c-file-style: "stroustrup"
* c-file-offsets: ((case-label . *) (statement-case-intro . *))
* indent-tabs-mode: nil
* End:
*
* vim: expandtab shiftwidth=4:
*/

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/* Configuration file handling.
*
* IRC Services is copyright (c) 1996-2009 Andrew Church.
* E-mail: <achurch@achurch.org>
* Parts written by Andrew Kempe and others.
* This program is free but copyrighted software; see the file GPL.txt for
* details.
*/
#include "services.h"
#include "conffile.h"
/*************************************************************************/
static void do_all_directives(int action, ConfigDirective *directives);
static int read_config_file(const char *modulename,
ConfigDirective *directives);
static int do_read_config_file(const char *modulename,
ConfigDirective *directives, FILE *f,
const char *filename, int recursion_level);
static int parse_config_line(const char *filename, int linenum, char *buf,
ConfigDirective *directives);
/* Actions for do_all_directives(): */
#define ACTION_COPYNEW 0 /* Copy `new' parameters to config variables */
#define ACTION_RESTORESAVED 1 /* Restore saved values of config variables */
/*************************************************************************/
/*************************************************************************/
/* Set configuration options for the given module (if `modulename' is NULL,
* set core configuration options). Returns nonzero on success, 0 on error
* (an error message is logged, and printed to the terminal if applicable,
* in this case). Returns successfully without doing anything if
* `directives' is NULL.
*
* `action' is a bitmask of CONFIGURE_* values (services.h), specifying
* what this function should do, as follows:
* - CONFIGURE_READ: read new values from the configuration file
* - CONFIGURE_SET: copy new values to configuration variables
* If both CONFIGURE_READ and CONFIGURE_SET are specified, new values are
* copied to the configuration variables only if all values are read in
* successfully (i.e. if a configure(...,CONFIGURE_READ) call would have
* returned success). CONFIGURE_SET alone will never fail.
*/
int configure(const char *modulename, ConfigDirective *directives,
int action)
{
/* If no directives were given, return success */
if (!directives)
return 1;
if (action & CONFIGURE_READ) {
if (!read_config_file(modulename, directives))
return 0;
}
if (action & CONFIGURE_SET)
do_all_directives(ACTION_COPYNEW, directives);
return 1;
}
/*************************************************************************/
/* Deconfigure given directive array (free any allocated storage and
* restore original values). A no-op if `directives' is NULL.
*/
void deconfigure(ConfigDirective *directives)
{
if (directives)
do_all_directives(ACTION_RESTORESAVED, directives);
}
/*************************************************************************/
/* Print a warning or error message to the log (and the console, if open). */
void config_error(const char *filename, int linenum, const char *message, ...)
{
char buf[4096];
va_list args;
va_start(args, message);
vsnprintf(buf, sizeof(buf), message, args);
va_end(args);
if (linenum)
log("%s:%d: %s", filename, linenum, buf);
else
log("%s: %s", filename, buf);
if (!nofork && isatty(2)) {
if (linenum)
fprintf(stderr, "%s:%d: %s\n", filename, linenum, buf);
else
fprintf(stderr, "%s: %s\n", filename, buf);
}
}
/*************************************************************************/
/*************************************************************************/
/* Perform an action for all directives in an array; the action is given
* by ACTION_*, defined above.
*/
static void do_all_directives(int action, ConfigDirective *directives)
{
int n, i;
for (n = 0; directives[n].name; n++) {
ConfigDirective *d = &directives[n];
for (i = 0; i < CONFIG_MAXPARAMS && d->params[i].type != CD_NONE; i++){
CDValue val;
/* Select the appropriate value to copy */
if (action == ACTION_COPYNEW)
val = d->params[i].new;
else
val = d->params[i].prev;
/* In any case, we'll be rewriting the config variable, so free
* the previous value if it was one we allocated */
if (d->params[i].flags & CF_ALLOCED) {
free(*(void **)d->params[i].ptr);
d->params[i].flags &= ~CF_ALLOCED;
}
/* Don't do anything if we're copying new values and this
* directive/parameter wasn't seen, or if we're restoring saved
* values and this parameter hasn't had its value saved (except
* for function parameters) */
if (action == ACTION_COPYNEW
&& (!d->was_seen || !(d->params[i].flags & CF_WASSET)))
continue;
if (action == ACTION_RESTORESAVED
&& d->params[i].type != CD_FUNC
&& !(d->params[i].flags & CF_SAVED))
continue;
/* Copy new value to configuration variable */
switch (d->params[i].type) {
case CD_SET:
if (action == ACTION_COPYNEW)
*(int *)d->params[i].ptr = (int)val.intval;
break;
case CD_TIME:
*(time_t *)d->params[i].ptr = val.timeval;
break;
case CD_STRING:
*(char **)d->params[i].ptr = val.ptrval;
break;
case CD_INT:
case CD_POSINT:
case CD_PORT:
case CD_TIMEMSEC:
*(int32 *)d->params[i].ptr = val.intval;
break;
case CD_FUNC: {
int (*func)(const char *, int, char *)
= (int (*)(const char *,int,char *))(d->params[i].ptr);
if (action == ACTION_COPYNEW)
func(NULL, CDFUNC_SET, NULL);
else
func(NULL, CDFUNC_DECONFIG, NULL);
break;
} /* case CD_FUNC */
case CD_DEPRECATED:
/* Nothing to do */
break;
default:
log("conffile: do_all_directives BUG: don't know how to "
" copy type %d (%s/%d)", d->params[i].type, d->name, i);
break;
} /* switch */
/* Fix up flags */
if (action == ACTION_COPYNEW) {
if (d->params[i].flags & CF_ALLOCED_NEW) {
d->params[i].flags |= CF_ALLOCED;
/* The value is still allocated, but it's now stored in
* the configuration variable, so we don't want to free
* it when clearing `new' */
d->params[i].flags &= ~CF_ALLOCED_NEW;
}
} else {
d->params[i].flags &= ~CF_SAVED;
}
} /* for each parameter */
} /* for each directive */
}
/*************************************************************************/
/* Read in configuration options, and return nonzero for success, zero for
* failure. Performs the actions needed by configure(...,CONFIGURE_READ).
*/
static int read_config_file(const char *modulename,
ConfigDirective *directives)
{
const char *filename;
FILE *f;
int retval, i, n;
/* Open default file */
filename = modulename==NULL ? IRCSERVICES_CONF : MODULES_CONF;
f = fopen(filename, "r");
if (!f) {
log_perror("Unable to open %s", filename);
if (!nofork && isatty(2))
fprintf(stderr, "Unable to open %s: %s\n", filename,
strerror(errno));
return 0;
}
/* Clear `was_set' flag and `new' value for all directives */
for (n = 0; directives[n].name != NULL; n++) {
directives[n].was_seen = 0;
for (i = 0; i < CONFIG_MAXPARAMS; i++) {
if (directives[n].params[i].flags & CF_ALLOCED_NEW)
free(directives[n].params[i].new.ptrval);
directives[n].params[i].flags &= ~(CF_WASSET | CF_ALLOCED_NEW);
memset(&directives[n].params[i].new, 0,
sizeof(directives[n].params[i].new));
if (directives[n].params[i].type == CD_FUNC) {
int (*func)(const char *, int, char *)
= (int (*)(const char *, int, char *))
(directives[n].params[i].ptr);
func(NULL, CDFUNC_INIT, NULL);
}
}
}
/* Actually do the work */
retval = do_read_config_file(modulename, directives, f, filename, 0);
fclose(f);
/* Make sure all required directives were seen */
for (n = 0; directives[n].name != NULL; n++) {
if (!directives[n].was_seen
&& (directives[n].params[0].flags & CF_DIRREQ)
) {
config_error(filename, 0, "Required directive `%s' missing",
directives[n].name);
retval = 0;
}
}
return retval;
}
/*************************************************************************/
/* Read in a single configuration file, recursively processing IncludeFile
* directives.
*/
static int do_read_config_file(const char *modulename,
ConfigDirective *directives, FILE *f,
const char *filename, int recursion_level)
{
char *current_module = NULL; /* Current module in modules.conf */
int retval = 1; /* Return value */
int linenum = 0;
char buf[4096], tmpbuf[4096], *s;
while (fgets(buf, sizeof(buf), f)) {
/* Check for pathologically long files */
if (linenum+1 < linenum) {
config_error(filename, linenum, "File too long");
retval = 0;
break;
}
linenum++;
/* Check for pathologically long lines */
if (strlen(buf) == sizeof(buf)-1 && buf[sizeof(buf)-1] != '\n') {
/* Report the maximum size as sizeof(buf)-3 to allow \r\n as
* well as \n to fit */
config_error(filename, linenum, "Line too long (%d bytes maximum)",
sizeof(buf)-3);
/* Skip everything else until an EOL (or EOF) is seen */
while (fgets(buf, sizeof(buf), f) && buf[strlen(buf)-1] != '\n')
/*nothing*/;
retval = 0;
}
/* Strip out comments (but don't touch # inside of quotes) */
s = buf;
while (*s) {
if (*s == '"') {
if (!(s = strchr(s+1, '"')))
break;
} else if (*s == '#') {
*s = 0;
break;
}
s++;
}
/* Check for IncludeFile directives (use tmpbuf to avoid damaging
* the original copy of the line) */
strbcpy(tmpbuf, buf);
s = strtok(tmpbuf, " \t\r\n");
if (s && stricmp(s, "IncludeFile") == 0) {
FILE *f2;
/* Check recursion level for infinite loops */
if (recursion_level > 100) {
config_error(filename, linenum,
"IncludeFile recursion depth limit exceeded");
retval = 0;
continue;
}
/* Find the filename */
s = strtok_remaining();
if (s && *s == '"') {
char *t = strchr(s+1, '"');
if (!t) {
config_error(filename, linenum,
"Missing closing double quote");
retval = 0;
continue;
}
*t = 0;
s++;
} else {
s = strtok(s, " \t\r\n");
}
if (!s || !*s) {
config_error(filename, linenum,
"Missing filename for IncludeFile");
retval = 0;
continue;
}
/* Valid filename string; try to open it */
f2 = fopen(s, "r");
if (!f2) {
config_error(filename, linenum,
"Unable to open %s: %s", s, strerror(errno));
retval = 0;
continue;
}
if (!do_read_config_file(modulename, directives, f2, s,
recursion_level+1))
retval = 0;
fclose(f2);
continue;
}
/* Handle Module/EndModule lines specially, and don't parse lines
* belonging to other modules */
if (modulename) {
if (current_module) {
/* Inside a Module/EndModule pair: discard lines belonging
* to other modules, and handle EndModule directives. If
* we reach EndModule for the module we're supposed to be
* processing, exit the loop to avoid unneeded processing. */
strbcpy(tmpbuf, buf);
s = strtok(tmpbuf, " \t\r\n");
if (s && stricmp(s, "EndModule") == 0) {
int strcmp_result = strcmp(current_module, modulename);
free(current_module);
if (strcmp_result == 0)
break; /* stop processing file, we're finished */
else
current_module = NULL;
continue;
} else if (strcmp(current_module, modulename) != 0) {
continue;
}
} else { /* !current_module */
/* Outside a Module/EndModule pair: handle Module
* directives, and report errors for anything else */
s = strtok(buf, " \t\r\n");
if (!s)
continue;
if (stricmp(s, "Module") != 0) {
config_error(filename, linenum,
"Expected `Module' directive");
retval = 0;
} else {
current_module = strtok(NULL, " \t\r\n");
if (!current_module) {
config_error(filename, linenum, "Module name missing");
retval = 0;
}
current_module = strdup(current_module);
if (!current_module) {
config_error(filename, linenum, "Out of memory");
retval = 0;
break;
}
}
continue;
} /* if (current_module) */
} /* if (modulename) */
/* Valid line--parse it */
if (!parse_config_line(filename, linenum, buf, directives))
retval = 0;
}
return retval;
}
/*************************************************************************/
/* Parse a configuration line. Return 1 on success; otherwise, print (and
* log, if applicable) appropriate error message and return 0. Destroys
* the buffer by side effect.
*/
static int parse_config_line(const char *filename, int linenum, char *buf,
ConfigDirective *directives)
{
char *s, *t, *directive;
int i, n, optind;
long longval;
unsigned long ulongval;
int retval = 1;
int ac = 0;
char *av[CONFIG_MAXPARAMS];
directive = strtok(buf, " \t\r\n");
s = strtok(NULL, "");
if (s) {
while (isspace(*s))
s++;
while (*s) {
if (ac >= CONFIG_MAXPARAMS) {
config_error(filename, linenum,
"Warning: too many parameters (%d max)",
CONFIG_MAXPARAMS);
break;
}
t = s;
if (*s == '"') {
t++;
s++;
while (*s && *s != '"') {
if (*s == '\\' && s[1] != 0)
strmove(s, s+1);
s++;
}
if (!*s)
config_error(filename, linenum,
"Warning: unterminated double-quoted string");
else
*s++ = 0;
} else {
s += strcspn(s, " \t\r\n");
if (*s)
*s++ = 0;
}
av[ac++] = t;
while (isspace(*s))
s++;
}
}
if (!directive)
return 1;
for (n = 0; directives[n].name; n++) {
ConfigDirective *d = &directives[n];
if (stricmp(directive, d->name) != 0)
continue;
d->was_seen = 1;
optind = 0;
for (i = 0; i < CONFIG_MAXPARAMS && d->params[i].type != CD_NONE; i++){
if (d->params[i].type == CD_SET) {
if (!(d->params[i].flags & CF_SAVED)) {
d->params[i].prev.intval = *(int *)d->params[i].ptr;
d->params[i].flags |= CF_SAVED;
}
d->params[i].new.intval = 1;
d->params[i].flags |= CF_WASSET;
continue;
}
if (d->params[i].type == CD_DEPRECATED) {
config_error(filename, linenum,
"Deprecated directive `%s' used", d->name);
d->params[i].flags |= CF_WASSET;
continue;
}
if (optind >= ac) {
if (!(d->params[i].flags & CF_OPTIONAL)) {
config_error(filename, linenum,
"Not enough parameters for `%s'", d->name);
retval = 0;
}
break;
}
switch (d->params[i].type) {
case CD_INT:
if (!(d->params[i].flags & CF_SAVED)) {
d->params[i].prev.intval = *(int32 *)d->params[i].ptr;
d->params[i].flags |= CF_SAVED;
}
longval = strtol(av[optind++], &s, 0);
if (*s) {
config_error(filename, linenum,
"%s: Expected an integer for parameter %d",
d->name, optind);
retval = 0;
break;
}
#if SIZEOF_LONG > 4
if (longval < -0x80000000L || longval > 0x7FFFFFFFL) {
config_error(filename, linenum,
"%s: Value out of range for parameter %d",
d->name, optind);
retval = 0;
break;
}
#endif
d->params[i].new.intval = (int32)longval;
break;
case CD_POSINT:
if (!(d->params[i].flags & CF_SAVED)) {
d->params[i].prev.intval = *(int32 *)d->params[i].ptr;
d->params[i].flags |= CF_SAVED;
}
ulongval = strtoul(av[optind++], &s, 0);
if (*s || ulongval <= 0) {
config_error(filename, linenum,
"%s: Expected a positive integer for"
" parameter %d", d->name, optind);
retval = 0;
break;
}
#if SIZEOF_LONG > 4
if (ulongval > 0xFFFFFFFFL) {
config_error(filename, linenum,
"%s: Value out of range for parameter %d",
d->name, optind);
retval = 0;
break;
}
#endif
d->params[i].new.intval = (int32)ulongval;
break;
case CD_PORT:
if (!(d->params[i].flags & CF_SAVED)) {
d->params[i].prev.intval = *(int32 *)d->params[i].ptr;
d->params[i].flags |= CF_SAVED;
}
longval = strtol(av[optind++], &s, 0);
if (*s) {
config_error(filename, linenum,
"%s: Expected a port number for parameter %d",
d->name, optind);
retval = 0;
break;
}
if (longval < 1 || longval > 65535) {
config_error(filename, linenum,
"Port numbers must be in the range 1..65535");
retval = 0;
break;
}
d->params[i].new.intval = (int32)longval;
break;
case CD_STRING:
if (!(d->params[i].flags & CF_SAVED)) {
d->params[i].prev.ptrval = *(char **)d->params[i].ptr;
d->params[i].flags |= CF_SAVED;
}
d->params[i].new.ptrval = strdup(av[optind++]);
if (!d->params[i].new.ptrval) {
config_error(filename, linenum, "%s: Out of memory",
d->name);
return 0;
}
d->params[i].flags |= CF_ALLOCED_NEW;
break;
case CD_TIME:
if (!(d->params[i].flags & CF_SAVED)) {
d->params[i].prev.timeval = *(time_t *)d->params[i].ptr;
d->params[i].flags |= CF_SAVED;
}
d->params[i].new.timeval = dotime(av[optind++]);
if (d->params[i].new.timeval < 0) {
config_error(filename, linenum,
"%s: Expected a time value for parameter %d",
d->name, optind);
retval = 0;
break;
}
break;
case CD_TIMEMSEC:
if (!(d->params[i].flags & CF_SAVED)) {
d->params[i].prev.intval = *(int32 *)d->params[i].ptr;
d->params[i].flags |= CF_SAVED;
}
longval = strtol(av[optind++], &s, 10);
if (longval < 0) {
config_error(filename, linenum,
"%s: Expected a positive value for"
" parameter %d", d->name, optind);
retval = 0;
break;
} else if (longval > 1000000) {
config_error(filename, linenum,
"%s: Value too large (maximum 1000000)",
d->name);
}
longval *= 1000;
if (*s == '.') {
int decimal = 0;
int count = 0;
s++;
while (count < 3 && isdigit(*s)) {
decimal = decimal*10 + (*s++ - '0');
count++;
}
while (count++ < 3)
decimal *= 10;
longval += decimal;
while (isdigit(*s))
s++;
}
if (*s) {
config_error(filename, linenum,
"%s: Expected a decimal number for"
" parameter %d", d->name, optind);
retval = 0;
break;
}
d->params[i].new.intval = (int32)longval;
break;
case CD_FUNC: {
int (*func)(const char *, int, char *)
= (int (*)(const char *, int, char *))(d->params[i].ptr);
if (!func(filename, linenum, av[optind++]))
retval = 0;
break;
}
default:
config_error(filename, linenum, "%s: Unknown type %d for"
" param %d", d->name, d->params[i].type, i+1);
return 0; /* don't bother continuing--something's bizarre */
} /* switch (d->params[i].type) */
d->params[i].flags |= CF_WASSET;
} /* for all parameters */
break; /* because we found a match */
} /* for all directives in array */
if (!directives[n].name) {
config_error(filename, linenum, "Unknown directive `%s'", directive);
return 1; /* don't cause abort */
}
return retval;
} /* parse_config_line() */
/*************************************************************************/
/*
* Local variables:
* c-file-style: "stroustrup"
* c-file-offsets: ((case-label . *) (statement-case-intro . *))
* indent-tabs-mode: nil
* End:
*
* vim: expandtab shiftwidth=4:
*/

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/* Structures, constants, and external declarations for configuration file
* handling.
*
* IRC Services is copyright (c) 1996-2009 Andrew Church.
* E-mail: <achurch@achurch.org>
* Parts written by Andrew Kempe and others.
* This program is free but copyrighted software; see the file GPL.txt for
* details.
*/
#ifndef CONFFILE_H
#define CONFFILE_H
/*************************************************************************/
/* Configuration directives. Note that all numeric parameter types except
* CD_TIME and CD_SET take an int32 value pointer (including CD_TIMEMSEC).
*/
/* Information about a configuration parameter's value: */
typedef union {
void *ptrval;
int32 intval;
time_t timeval;
} CDValue;
/* Information about a configuration directive: */
typedef struct {
const char *name;
struct {
int type; /* Parameter type (CD_* below) */
int flags; /* Parameter flags (CF_* below) */
void *ptr; /* Pointer to where to store the value */
/* The following data is internal-use-only: */
CDValue prev; /* Previous value (to restore when deconfigured) */
CDValue new; /* New value (to set if conf-file successfully read) */
} params[CONFIG_MAXPARAMS];
/* Also internal use only: */
int was_seen; /* Non-zero if directive was seen this time around */
} ConfigDirective;
#define CD_NONE 0
#define CD_INT 1
#define CD_POSINT 2 /* Positive integer only */
#define CD_PORT 3 /* 1..65535 only */
#define CD_STRING 4
#define CD_TIME 5 /* Type of `ptr' is `time_t *' */
#define CD_TIMEMSEC 6 /* Variable is in milliseconds, parameter
* in seconds (decimal allowed) */
#define CD_FUNC 7 /* `ptr' is a function to call; see
* init.c for examples */
#define CD_SET -1 /* Not a real parameter; just set the
* given `int' variable to 1 */
#define CD_DEPRECATED -2 /* Set for deprecated directives; causes
* a warning to be printed */
/* Flags: */
#define CF_OPTIONAL 0x01 /* Parameter is optional (defaults to 0) */
#define CF_DIRREQ 0x02 /* Directive is required (set on first param)*/
/* Internal-use-only flags: */
#define CF_SAVED 0x80 /* Original value saved in `prev' */
#define CF_WASSET 0x40 /* Parameter set this time around */
#define CF_ALLOCED 0x20 /* Current value is alloc'd by parser */
#define CF_ALLOCED_NEW 0x10 /* Value of `new' is alloc'd by parser */
/* Values for `action' parameter to configure() (can be or'ed together): */
#define CONFIGURE_READ 1 /* Read settings from configuration file */
#define CONFIGURE_SET 2 /* Set configuration variables to new values */
/* Values passed in `linenum' parameter to configuration directive handlers
* (CD_FUNC parameters) when `filename' is NULL: */
#define CDFUNC_INIT 0 /* Prepare for reading data */
#define CDFUNC_SET 1 /* Copy new data to real config variables */
#define CDFUNC_DECONFIG 2 /* Delete any data in config variables */
/*************************************************************************/
/* Global functions: */
/* Set configuration options for the given module (if `modulename' is NULL,
* set core configuration options). Returns nonzero on success, 0 on error
* (an error message is logged, and printed to the terminal if applicable,
* in this case). Returns successfully without doing anything if
* `directives' is NULL. */
extern int configure(const char *modulename, ConfigDirective *directives,
int action);
/* Deconfigure given directive array (free any allocated storage and
* restore original values). A no-op if `directives' is NULL. */
extern void deconfigure(ConfigDirective *directives);
/* Print a warning or error message to the log (and the console, if open). */
extern void config_error(const char *filename, int linenum,
const char *message,...);
/*************************************************************************/
#endif /* CONFFILE_H */
/*
* Local variables:
* c-file-style: "stroustrup"
* c-file-offsets: ((case-label . *) (statement-case-intro . *))
* indent-tabs-mode: nil
* End:
*
* vim: expandtab shiftwidth=4:
*/

2884
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30
cp-recursive Normal file
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#!/bin/sh
set -e
if [ $1 = "-t" ] ; then
shift
fi
if [ ! "$2" ] ; then
echo >&2 "Usage: $0 <sourcedir> <targetdir>"
exit 1
fi
if [ -d "$1" ] ; then
dir="$1"
else
dir=`dirname "$1"`
fi
while [ "$2" ] ; do
shift
done
dest=`echo "$1" | sed s,/*$,,`
if [ -d "$dest" ] ; then
dest="$dest/`basename $dir`"
fi
mkdir -p "$dest"
tar Ccf $dir - . | tar Cxf $dest -
# Local variables:
# indent-tabs-mode: nil
# End:
#
# vim: expandtab shiftwidth=4:

327
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/* Database core routines.
*
* IRC Services is copyright (c) 1996-2009 Andrew Church.
* E-mail: <achurch@achurch.org>
* Parts written by Andrew Kempe and others.
* This program is free but copyrighted software; see the file GPL.txt for
* details.
*/
#include "services.h"
#include "databases.h"
#include "encrypt.h"
#include "modules.h"
/*************************************************************************/
/* List of registered tables */
typedef struct dbtablenode_ DBTableNode;
struct dbtablenode_ {
DBTableNode *next, *prev;
DBTable *table;
const Module *owner; /* Which module registered this table? */
int loaded; /* Has this table been loaded? */
};
static DBTableNode *tables = NULL;
/* Currently active database module */
static DBModule *dbmodule = NULL;
/* Local routines: */
static int do_unload_module(const Module *module);
/*************************************************************************/
/*************************************************************************/
/* Initialization/cleanup routines. */
int database_init(int ac, char **av)
{
if (!add_callback(NULL, "unload module", do_unload_module)) {
log("database_init: add_callback() failed");
return 0;
}
return 1;
}
/************************************/
void database_cleanup(void)
{
remove_callback(NULL, "unload module", do_unload_module);
}
/************************************/
/* Check for tables that the module forgot to unload. */
static int do_unload_module(const Module *module)
{
DBTableNode *t, *t2;
LIST_FOREACH_SAFE (t, tables, t2) {
if (t->owner == module) {
log("database: Module `%s' forgot to unregister table `%s'",
get_module_name(module), t->table->name);
unregister_dbtable(t->table);
}
}
return 0;
}
/*************************************************************************/
/* Register a new database table. Returns nonzero on success, zero on
* error.
*/
int _register_dbtable(DBTable *table, const Module *caller)
{
DBTableNode *t;
/* Sanity checks on parameter */
if (!table) {
log("BUG: register_dbtable() with NULL table!");
return 0;
}
if (!table->name) {
log("BUG: register_dbtable(): table->name is NULL!");
return 0;
}
if (!table->fields || !table->newrec || !table->freerec
|| !table->insert || !table->first || !table->next
) {
log("BUG: register_dbtable(%s): table->%s is NULL!", table->name,
!table->fields ? "fields" :
!table->newrec ? "newrec" :
!table->freerec ? "freerec" :
!table->insert ? "insert" :
!table->first ? "first" :
!table->next ? "next" :
"???");
return 0;
}
/* Sanity check: make sure it's not already registered */
LIST_FOREACH (t, tables) {
if (t->table == table) {
log("BUG: register_dbtable(%s): table already registered!",
table->name);
break;
}
}
/* Allocate and append to list (make sure to preserve order, since
* later tables may depend on earlier ones); if a database module is
* available, load the table ammediately*/
t = smalloc(sizeof(*t));
t->table = table;
t->owner = caller;
t->loaded = 0;
LIST_APPEND(t, tables);
if (dbmodule)
t->loaded = (*dbmodule->load_table)(t->table);
return 1;
}
/*************************************************************************/
/* Unregister a database table. Does nothing if the table was not
* registered in the first place.
*/
void unregister_dbtable(DBTable *table)
{
DBTableNode *t;
if (!table) {
log("BUG: unregister_dbtable() with NULL table!");
return;
}
/* Sanity check: make sure it was registered first */
LIST_FOREACH (t, tables) {
if (t->table == table) {
LIST_REMOVE(t, tables);
free(t);
break;
}
}
}
/*************************************************************************/
/* Save all registered database tables to permanent storage. Returns 1 if
* all tables were successfully saved or no tables are registered, 0 if
* some tables were successfully saved (but some were not), or -1 if no
* tables were successfully saved.
*/
int save_all_dbtables(void)
{
DBTableNode *t;
int some_saved = 0;
int some_failed = 0;
if (!tables)
return 1;
if (!dbmodule) {
log("save_all_dbtables(): No database module registered!");
return -1;
}
LIST_FOREACH (t, tables) {
if ((*dbmodule->save_table)(t->table)) {
some_saved = 1;
} else {
log("save_all_dbtables(): Failed to save table `%s'",
t->table->name);
some_failed = 1;
}
}
return some_saved - some_failed;
}
/*************************************************************************/
/*************************************************************************/
/* Register a database module. Returns nonzero on success, zero on error.
* On success, all registered tables which have not already been loaded
* will be loaded from permanent storage. Only one database module can be
* registered.
*/
int register_dbmodule(DBModule *module)
{
DBTableNode *t;
if (!module) {
log("BUG: register_dbmodule() with NULL module!");
return 0;
}
if (!module->load_table || !module->save_table) {
log("BUG: register_dbmodule(): module->%s is NULL!",
!module->load_table ? "load_table" : "save_table");
return 0;
}
if (dbmodule) {
if (module == dbmodule)
log("BUG: register_dbmodule(): attempt to re-register module!");
else
log("register_dbmodule(): a database module is already registered");
return 0;
}
dbmodule = module;
LIST_FOREACH (t, tables) {
if (!t->loaded)
t->loaded = (*dbmodule->load_table)(t->table);
}
return 1;
}
/*************************************************************************/
/* Unregister a database module. Does nothing if the module was not
* registered in the first place.
*/
void unregister_dbmodule(DBModule *module)
{
if (!module) {
log("BUG: unregister_dbmodule() with NULL module!");
return;
}
if (dbmodule == module)
dbmodule = NULL;
}
/*************************************************************************/
/* Read a value from a database field. The value buffer is assumed to be
* large enough to hold the retrieved value.
*/
void get_dbfield(const void *record, const DBField *field, void *buffer)
{
int size;
if (!record || !field || !buffer) {
log("BUG: get_dbfield(): %s is NULL!",
!record ? "record" : !field ? "field" : "buffer");
return;
}
if (field->get) {
(*field->get)(record, buffer);
return;
}
switch (field->type) {
case DBTYPE_INT8: size = 1; break;
case DBTYPE_UINT8: size = 1; break;
case DBTYPE_INT16: size = 2; break;
case DBTYPE_UINT16: size = 2; break;
case DBTYPE_INT32: size = 4; break;
case DBTYPE_UINT32: size = 4; break;
case DBTYPE_TIME: size = sizeof(time_t); break;
case DBTYPE_STRING: size = sizeof(char *); break;
case DBTYPE_BUFFER: size = field->length; break;
case DBTYPE_PASSWORD: size = sizeof(Password); break;
default:
log("BUG: bad field type %d in get_dbfield()", field->type);
return;
}
if (!size) {
return;
}
memcpy(buffer, (const uint8 *)record + field->offset, size);
}
/*************************************************************************/
/* Store a value to a database field. */
void put_dbfield(void *record, const DBField *field, const void *value)
{
int size;
if (!record || !field || !value) {
log("BUG: get_dbfield(): %s is NULL!",
!record ? "record" : !field ? "field" : "value");
return;
}
if (field->put) {
(*field->put)(record, value);
return;
}
switch (field->type) {
case DBTYPE_INT8: size = 1; break;
case DBTYPE_UINT8: size = 1; break;
case DBTYPE_INT16: size = 2; break;
case DBTYPE_UINT16: size = 2; break;
case DBTYPE_INT32: size = 4; break;
case DBTYPE_UINT32: size = 4; break;
case DBTYPE_TIME: size = sizeof(time_t); break;
case DBTYPE_STRING: size = sizeof(char *); break;
case DBTYPE_BUFFER: size = field->length; break;
case DBTYPE_PASSWORD: size = sizeof(Password); break;
default:
log("BUG: bad field type %d in get_dbfield()", field->type);
return;
}
if (!size) {
return;
}
memcpy((uint8 *)record + field->offset, value, size);
}
/*************************************************************************/
/*
* Local variables:
* c-file-style: "stroustrup"
* c-file-offsets: ((case-label . *) (statement-case-intro . *))
* indent-tabs-mode: nil
* End:
*
* vim: expandtab shiftwidth=4:
*/

139
databases.h Normal file
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/* Database structures and declarations.
*
* IRC Services is copyright (c) 1996-2009 Andrew Church.
* E-mail: <achurch@achurch.org>
* Parts written by Andrew Kempe and others.
* This program is free but copyrighted software; see the file GPL.txt for
* details.
*/
#ifndef DATABASE_H
#define DATABASE_H
#ifndef MODULES_H
# include "modules.h"
#endif
/*************************************************************************/
/* Type constants for DBField.type */
typedef enum {
DBTYPE_INT8,
DBTYPE_UINT8,
DBTYPE_INT16,
DBTYPE_UINT16,
DBTYPE_INT32,
DBTYPE_UINT32,
DBTYPE_TIME,
DBTYPE_STRING,
DBTYPE_BUFFER, /* Buffer size in DBField.length */
DBTYPE_PASSWORD,
} DBType;
/* Structure that describes a field of a database table */
typedef struct dbfield_ {
const char *name; /* Field name */
DBType type; /* Field type */
int offset; /* Offset to field from start of structure
* (use standard `offsetof' macro) */
int length; /* Length of DBTYPE_BUFFER fields */
int load_only; /* If nonzero, field is not saved (use for reading
* obsolete fields) */
void (*get)(const void *record, void **value_ret);
/* Function to retrieve the field's value when
* saving; `value_ret' points to a variable of
* the appropriate type (for DBTYPE_STRING, the
* string should be malloc'd if not NULL) */
void (*put)(void *record, const void *value);
/* Function to set the field's value on load;
* `value' points to a variable of the
* appropriate type */
} DBField;
/* Structure that describes a database table */
typedef struct dbtable_ {
const char *name; /* Table name */
DBField *fields; /* Array of fields, terminated with name==NULL */
void *(*newrec)(void);
/* Routine to allocate a new record */
void (*freerec)(void *record);
/* Routine to free an allocated record (that has
* not been inserted into the table) */
void (*insert)(void *record);
/* Routine to insert a record (used when loading,
* returns nonzero for success or 0 for failure) */
void *(*first)(void), *(*next)(void);
/* Routines to iterate through all records (used
* when saving) */
int (*postload)(void);
/* Routine called after all records have been loaded;
* returns nonzero for success or 0 for failure */
} DBTable;
/* Container for module-implemented database functions */
typedef struct dbmodule_ {
/* Load the given table from permanent storage, returning nonzero for
* success, zero for failure. */
int (*load_table)(DBTable *table);
/* Save the given table to permanent storage, returning nonzero for
* success, zero for failure */
int (*save_table)(DBTable *table);
} DBModule;
/*************************************************************************/
/* Macro to return a pointer to a field in a record */
#define DB_FIELDPTR(record,field) ((int8 *)(record) + (field)->offset)
/*************************************************************************/
/* Initialization/cleanup routines. */
extern int database_init(int ac, char **av);
extern void database_cleanup(void);
/* Register a new database table. Returns nonzero on success, zero on
* error. */
#define register_dbtable(table) _register_dbtable((table), THIS_MODULE)
extern int _register_dbtable(DBTable *table, const Module *caller);
/* Unregister a database table. Does nothing if the table was not
* registered in the first place. */
extern void unregister_dbtable(DBTable *table);
/* Save all registered database tables to permanent storage. Returns 1 if
* all tables were successfully saved or no tables are registered, 0 if
* some tables were successfully saved (but some were not), or -1 if no
* tables were successfully saved. */
extern int save_all_dbtables(void);
/* Register a database module. Returns nonzero on success, zero on error.
* On success, all registered tables which have not already been loaded
* will be loaded from permanent storage. Only one database module can be
* registered. */
extern int register_dbmodule(DBModule *module);
/* Unregister a database module. Does nothing if the module was not
* registered in the first place. */
extern void unregister_dbmodule(DBModule *module);
/* Read a value from a database field. The value buffer is assumed to be
* large enough to hold the retrieved value. */
extern void get_dbfield(const void *record, const DBField *field,
void *buffer);
/* Store a value to a database field. */
extern void put_dbfield(void *record, const DBField *field, const void *value);
/*************************************************************************/
#endif /* DATABASE_H */
/*
* Local variables:
* c-file-style: "stroustrup"
* c-file-offsets: ((case-label . *) (statement-case-intro . *))
* indent-tabs-mode: nil
* End:
*
* vim: expandtab shiftwidth=4:
*/

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/* Basic constants, macros and prototypes.
*
* IRC Services is copyright (c) 1996-2009 Andrew Church.
* E-mail: <achurch@achurch.org>
* Parts written by Andrew Kempe and others.
* This program is free but copyrighted software; see the file GPL.txt for
* details.
*/
#ifndef DEFS_H
#define DEFS_H
/*************************************************************************/
/****************** START OF USER-CONFIGURABLE SECTION *******************/
/*************************************************************************/
/******* General configuration *******/
/* Name of configuration file (in Services directory) */
#define IRCSERVICES_CONF PROGRAM ".conf"
/* Name of module configuration file (in Services directory) */
#define MODULES_CONF "modules.conf"
/* Maximum number of parameters for a configuration directive */
#define CONFIG_MAXPARAMS 8
/* Maximum number of channels to buffer modes for (for MergeChannelModes) */
#define MERGE_CHANMODES_MAX 3
/******* NickServ configuration *******/
/* Default language for newly registered nicks; see language.h for
* available languages (LANG_* constants). Unless you're running a
* regional network, you should probably leave this at LANG_EN_US. */
#define DEF_LANGUAGE LANG_EN_US
/******* OperServ configuration *******/
/* Define this to enable OperServ's debugging commands (Services root
* only). These commands are undocumented; "use the source, Luke!" */
/* #define DEBUG_COMMANDS */
/*************************************************************************/
/******************* END OF USER-CONFIGURABLE SECTION ********************/
/*************************************************************************/
/* Various buffer sizes */
/* Size of input buffer (note: this is different from BUFSIZ)
* This MUST be big enough to hold at least one full IRC message, or Bad
* Things will happen. */
#define BUFSIZE 1024
/* Maximum length of a configuration file line */
#define CONFIG_LINEMAX 4096
/* Size of memory-based log buffer (only used with SHOWALLOCS) */
#define LOGMEMSIZE 65536
/*************************************************************************/
/*
* The following constants define the sizes of channel name, nickname, and
* password buffers used in Services. These should only be adjusted if
* your IRC network allows longer nicknames or channel names _and_ you wish
* to allow such names to be used with Services. If your IRC network has
* smaller limits, you do not need to change these values; Services will
* still work fine, albeit with a tiny amount of wasted memory for each
* nickname and channel.
*
* WARNING: If you change these, you MUST back up your data to an XML file
* before making the change, and re-import the data afterwards. Database
* files created with different calues of CHANMAX/NICKMAX/PASSMAX are not
* compatible!
*/
/* Maximum length of a channel name, including the trailing null. Any
* channels with a length longer than CHANMAX-1 (including the leading #)
* will not be usable with ChanServ. */
#define CHANMAX 64
/* Maximum length of a nickname, including the trailing null. This MUST be
* at least one greater than the maximum allowable nickname length on your
* network, or people will run into problems using Services! The default
* (32) should work for all current servers. */
#define NICKMAX 32
/* Maximum length of an unencrypted password, including the trailing null. */
#define PASSMAX 32
/*************************************************************************/
/* For convert-db, we redefine the above values to be large enough for all
* potential strings. Do not modify these or convert-db will explode in
* your face, painfully. */
#ifdef CONVERT_DB
# undef NICKMAX
# undef CHANMAX
# undef PASSMAX
# define NICKMAX 256
# define CHANMAX 512
# define PASSMAX 256
#endif
/*************************************************************************/
/*************************************************************************/
/* ---- There should be no need to modify anything below this line. ---- */
/*************************************************************************/
/*************************************************************************/
/* Common includes/prototypes. */
/* glibc seems to require this for the prototype of strsignal(). */
#define _GNU_SOURCE
/* Some AIX boxes define int16 and int32 on their own. Blarph. */
#if INTTYPE_WORKAROUND
# define int16 builtin_int16
# define int32 builtin_int32
#endif
/* We have our own encrypt(). */
#define encrypt encrypt_
#include <stdarg.h>
#include <stddef.h>
#include <stdio.h>
#include <stdlib.h>
#undef DEFS_H /* kludge to work around Cygwin string.h kludge to work
* around problem compiling in gdb... this is stupid */
#include <string.h>
#define DEFS_H
#include <unistd.h>
#include <signal.h>
#include <time.h>
#include <ctype.h>
#include <errno.h>
#include <limits.h>
#include <math.h>
#include <sys/types.h>
#include <sys/time.h>
#undef encrypt
#if HAVE_STDINT_H
# include <stdint.h>
#endif
#if HAVE_STRINGS_H
# include <strings.h>
#endif
#if HAVE_SYS_SELECT_H
/* FreeBSD (4.4-STABLE) defines LIST_REMOVE and LIST_FOREACH in
* <sys/queue.h>, which is included by <sys/select.h>, so make sure we
* include it here before list-array.h defines our own versions of those. */
# include <sys/select.h>
#endif
#ifdef _AIX
/* Some AIX boxes seem to have bogus includes that don't have these
* prototypes. */
extern int strcasecmp(const char *, const char *);
extern int strncasecmp(const char *, const char *, size_t);
# if 0 /* These break on some AIX boxes (4.3.1 reported). */
extern int gettimeofday(struct timeval *, struct timezone *);
extern int socket(int, int, int);
extern int bind(int, struct sockaddr *, int);
extern int connect(int, struct sockaddr *, int);
extern int shutdown(int, int);
# endif
# undef FD_ZERO
# define FD_ZERO(p) memset((p), 0, sizeof(*(p)))
#endif /* _AIX */
/* Alias stricmp/strnicmp to strcasecmp/strncasecmp if we have the latter
* but not the former. */
#if !HAVE_STRICMP && HAVE_STRCASECMP
# define stricmp strcasecmp
# define strnicmp strncasecmp
#endif
/* socklen_t for systems without it. */
#if !HAVE_SOCKLEN_T
typedef int socklen_t;
#endif
#if INTTYPE_WORKAROUND
# undef int16
# undef int32
#endif
/*************************************************************************/
/* System/compiler sanity checks. */
/* Filename and pathname maximum lengths: (these are usually defined in
* limits.h, but check just in case) */
#ifndef NAME_MAX
# define NAME_MAX 255
#endif
#ifndef PATH_MAX
# define PATH_MAX 1023
#endif
/* Number of signals available: */
#ifndef NSIG
# define NSIG 32
#endif
/*************************************************************************/
/* Various generally useful macros. */
/* Make sizeof() return an int regardless of compiler (avoids printf
* argument type warnings). */
#define sizeof(v) ((int)sizeof(v))
/* Length of an array: */
#define lenof(a) (sizeof(a) / sizeof(*(a)))
/* Sign of a number: (-1, 0, or 1) */
#define sgn(n) ((n)<0 ? -1 : ((n)>0))
/* Telling compilers about printf()-like functions: */
#ifdef __GNUC__
# define FORMAT(type,fmt,start) __attribute__((format(type,fmt,start)))
#else
# define FORMAT(type,fmt,start)
#endif
/* Macros to define a function pointer (E_FUNCPTR declares it extern).
* This is needed because GCC doesn't seem to like defining a pointer to a
* function with __attribute__s in a single statement. */
#ifdef __GNUC__
# define FUNCPTR(type,name,rest) \
type _##name##_t rest; \
typeof(_##name##_t) *name
# define E_FUNCPTR(type,name,rest) \
type _##name##_t rest; \
extern typeof(_##name##_t) *name
#else
# define FUNCPTR(type,name,rest) type (*name) rest
# define E_FUNCPTR(type,name,rest) extern type (*name) rest
#endif
/*************************************************************************/
/* Generic "invalid" pointer value. For use when an "invalid" value is
* needed and NULL cannot be used. */
#define PTR_INVALID ((const char *)-1)
/*************************************************************************/
#endif /* DEFS_H */
/*
* Local variables:
* c-file-style: "stroustrup"
* c-file-offsets: ((case-label . *) (statement-case-intro . *))
* indent-tabs-mode: nil
* End:
*
* vim: expandtab shiftwidth=4:
*/

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/* High-level encryption routines.
*
* IRC Services is copyright (c) 1996-2009 Andrew Church.
* E-mail: <achurch@achurch.org>
* Parts written by Andrew Kempe and others.
* This program is free but copyrighted software; see the file GPL.txt for
* details.
*/
#include "services.h"
#include "modules.h"
#include "encrypt.h"
/*************************************************************************/
/* List of available ciphers. */
static CipherInfo *cipherlist;
/*************************************************************************/
/*************************************************************************/
/* Default (no encryption) routines. Used when no encryption is selected. */
/*************************************************************************/
/* encrypt(): Encrypt `src' of length `len' into `dest' of size `size'.
* Returns:
* 0 on success
* +N if the destination buffer is too small; N is the minimum size
* buffer required to hold the encrypted text
* -1 on other error
*/
static int default_encrypt(const char *src, int len, char *dest, int size)
{
if (size < PASSMAX) {
return PASSMAX;
}
memset(dest, 0, size);
memcpy(dest, src, (len > size) ? size : len);
return 0;
}
/*************************************************************************/
/* Decrypt `src' into buffer `dest' of size `size'. Returns:
* 0 on success
* +N if the destination buffer is too small; N is the minimum size
* buffer required to hold the decrypted text
* -2 if the encryption algorithm does not allow decryption
* -1 on other error
*/
static int default_decrypt(const char *src, char *dest, int size)
{
int passlen;
for (passlen = 0; passlen < PASSMAX; passlen++) {
if (!src[passlen]) {
break;
}
}
if (size < passlen+1) {
return passlen+1 - size;
}
memset(dest, 0, size);
memcpy(dest, src, passlen);
return 0;
}
/*************************************************************************/
/* Check an input password `plaintext' against a stored, encrypted password
* `password'. Return value is:
* 1 if the password matches
* 0 if the password does not match
* -1 if an error occurred while checking
*/
static int default_check_password(const char *plaintext, const char *password)
{
if (strncmp(plaintext, password, PASSMAX) == 0) {
return 1;
} else {
return 0;
}
}
/*************************************************************************/
/*************************************************************************/
/* High-level password encryption routines. */
/*************************************************************************/
/* Allocate and return a new, empty Password structure. Always succeeds
* (smalloc() will throw a signal if memory cannot be allocated).
*/
Password *new_password(void)
{
Password *password = smalloc(sizeof(*password));
init_password(password);
return password;
}
/*************************************************************************/
/* Initialize a preallocated Password structure. Identical in behavior to
* new_password(), except that the passed-in structure is used instead of
* allocating a new one, and the structure pointer is not returned.
*/
void init_password(Password *password)
{
memset(password->password, 0, sizeof(password->password));
password->cipher = NULL;
}
/*************************************************************************/
/* Set the contents of a Password structure to the given values. If
* cipher is not NULL, a copy of it is made, so the original string may be
* disposed of after calling set_password().
*/
void set_password(Password *password,
const char password_buffer[PASSMAX],
const char *cipher)
{
memcpy(password->password, password_buffer, PASSMAX);
if (cipher) {
password->cipher = sstrdup(cipher);
} else {
password->cipher = NULL;
}
}
/*************************************************************************/
/* Copy the contents of a Password structure to another Password structure.
* The destination password comes first, a la memcpy().
*/
void copy_password(Password *to, const Password *from)
{
clear_password(to);
memcpy(to->password, from->password, sizeof(to->password));
if (from->cipher) {
to->cipher = sstrdup(from->cipher);
} else {
to->cipher = NULL;
}
}
/*************************************************************************/
/* Clear and free memory used by the contents of a Password structure,
* without freeing the structure itself. Similar to init_password(), but
* assumes that the contents of the Password structure are valid (in
* particular, assumes that password->cipher needs to be freed if it is
* not NULL).
*/
void clear_password(Password *password)
{
memset(password->password, 0, sizeof(password->password));
free((char *)password->cipher);
password->cipher = NULL;
}
/*************************************************************************/
/* Free a Password structure allocated with new_password(). Does nothing
* if NULL is given.
*/
void free_password(Password *password)
{
if (password) {
clear_password(password);
free(password);
}
}
/*************************************************************************/
/* Encrypt string `plaintext' of length `len', placing the result in
* `password'. Returns:
* 0 on success
* -2 if the encrypted password is too long to fit in the buffer
* -1 on other error
*/
int encrypt_password(const char *plaintext, int len, Password *password)
{
encrypt_func_t low_encrypt = default_encrypt;
int res;
if (EncryptionType) {
CipherInfo *ci;
LIST_SEARCH(cipherlist, name, EncryptionType, strcmp, ci);
if (!ci) {
log("encrypt_password(): cipher `%s' not available!",
EncryptionType);
return -1;
}
low_encrypt = ci->encrypt;
}
clear_password(password);
res = (*low_encrypt)(plaintext, len, password->password,
sizeof(password->password));
if (res == 0) {
if (EncryptionType) {
password->cipher = strdup(EncryptionType);
if (!password->cipher) {
module_log_perror("strdup() failed in encrypt_password()");
clear_password(password);
return -1;
}
}
return 0;
} else {
clear_password(password);
if (res > 0) { /* buffer too small */
return -2;
} else {
return -1;
}
}
}
/*************************************************************************/
/* Decrypt `password' into buffer `dest' of length `size'. Returns:
* 0 on success
* +N if the destination buffer is too small; N is the minimum size
* buffer required to hold the decrypted password
* -2 if the encryption algorithm does not allow decryption
* -1 on other error
*/
int decrypt_password(const Password *password, char *dest, int size)
{
decrypt_func_t low_decrypt = default_decrypt;
if (password->cipher) {
CipherInfo *ci;
LIST_SEARCH(cipherlist, name, password->cipher, strcmp, ci);
if (!ci) {
log("decrypt_password(): cipher `%s' not available!",
password->cipher);
return -1;
}
low_decrypt = ci->decrypt;
}
return (*low_decrypt)(password->password, dest, size);
}
/*************************************************************************/
/* Check an input password `plaintext' against a stored, encrypted password
* `password'. Return value is:
* 1 if the password matches
* 0 if the password does not match
* -1 if an error occurred while checking
*/
int check_password(const char *plaintext, const Password *password)
{
check_password_func_t low_check_password = default_check_password;
if (password->cipher) {
CipherInfo *ci;
LIST_SEARCH(cipherlist, name, password->cipher, strcmp, ci);
if (!ci) {
log("check_password(): cipher `%s' not available!",
password->cipher);
return -1;
}
low_check_password = ci->check_password;
}
return (*low_check_password)(plaintext, password->password);
}
/*************************************************************************/
/*************************************************************************/
/* Cipher registration/unregistration. */
/*************************************************************************/
/* Register a new cipher. */
void register_cipher(CipherInfo *ci)
{
LIST_INSERT(ci, cipherlist);
}
/*************************************************************************/
/* Unregister a cipher. Does nothing if the cipher was not registered. */
void unregister_cipher(CipherInfo *ci)
{
CipherInfo *ci2;
LIST_FOREACH (ci2, cipherlist) {
if (ci2 == ci) {
LIST_REMOVE(ci, cipherlist);
break;
}
}
}
/*************************************************************************/
/*
* Local variables:
* c-file-style: "stroustrup"
* c-file-offsets: ((case-label . *) (statement-case-intro . *))
* indent-tabs-mode: nil
* End:
*
* vim: expandtab shiftwidth=4:
*/

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/* Include file for encryption routines.
*
* IRC Services is copyright (c) 1996-2009 Andrew Church.
* E-mail: <achurch@achurch.org>
* Parts written by Andrew Kempe and others.
* This program is free but copyrighted software; see the file GPL.txt for
* details.
*/
#ifndef ENCRYPT_H
#define ENCRYPT_H
/*************************************************************************/
/* Structure encapsulating a password and the type of encryption used to
* encrypt it. */
typedef struct {
char password[PASSMAX]; /* The password itself, possibly encrypted */
const char *cipher; /* Encryption cipher name, or NULL for none */
} Password;
/*************************************************************************/
/* High-level password manipulation functions. */
/* Allocate and return a new, empty Password structure. Always succeeds
* (smalloc() will throw a signal if memory cannot be allocated). */
extern Password *new_password(void);
/* Initialize a preallocated Password structure. Identical in behavior to
* new_password(), except that the passed-in structure is used instead of
* allocating a new one, and the structure pointer is not returned. */
extern void init_password(Password *password);
/* Set the contents of a Password structure to the given values. If
* cipher is not NULL, a copy of it is made, so the original string may be
* disposed of after calling set_password(). */
extern void set_password(Password *password,
const char password_buffer[PASSMAX],
const char *cipher);
/* Copy the contents of a Password structure to another Password structure.
* The destination password comes first, a la memcpy(). */
extern void copy_password(Password *to, const Password *from);
/* Clear and free memory used by the contents of a Password structure,
* without freeing the structure itself. Similar to init_password(), but
* assumes that the contents of the Password structure are valid (in
* particular, assumes that password->cipher needs to be freed if it is not
* NULL). */
extern void clear_password(Password *password);
/* Free a Password structure allocated with new_password(). Does nothing
* if NULL is given. */
extern void free_password(Password *password);
/* Encrypt string `plaintext' of length `len', placing the result in
* `password'. Returns:
* 0 on success
* -2 if the encrypted password is too long to fit in the buffer
* -1 on other error */
extern int encrypt_password(const char *plaintext, int len,
Password *password);
/* Decrypt `password' into buffer `dest' of length `size'. Returns:
* 0 on success
* +N if the destination buffer is too small; N is the minimum size
* buffer required to hold the decrypted password
* -2 if the encryption algorithm does not allow decryption
* -1 on other error */
extern int decrypt_password(const Password *password, char *dest, int size);
/* Check an input password `plaintext' against a stored, encrypted password
* `password'. Return value is:
* 1 if the password matches
* 0 if the password does not match
* -1 if an error occurred while checking */
extern int check_password(const char *plaintext, const Password *password);
/*************************************************************************/
/* Low-level encryption/decryption functions. Each encryption module must
* implement all of these functions. */
/* encrypt(): Encrypt `src' of length `len' into `dest' of size `size'.
* Returns:
* 0 on success
* +N if the destination buffer is too small; N is the minimum size
* buffer required to hold the encrypted text
* -1 on other error */
typedef int (*encrypt_func_t)(const char *src, int len, char *dest, int size);
/* Decrypt `src' into buffer `dest' of size `size'. Returns:
* 0 on success
* +N if the destination buffer is too small; N is the minimum size
* buffer required to hold the decrypted text
* -2 if the encryption algorithm does not allow decryption
* -1 on other error */
typedef int (*decrypt_func_t)(const char *src, char *dest, int size);
/* Check an input password `plaintext' against a stored, encrypted password
* `password'. Return value is:
* 1 if the password matches
* 0 if the password does not match
* -1 if an error occurred while checking */
typedef int (*check_password_func_t)(const char *plaintext,
const char *password);
/*************************************************************************/
/* Registration and de-registration of ciphers (encryption modules). */
typedef struct cipherinfo_ CipherInfo;
struct cipherinfo_ {
CipherInfo *next, *prev; /* Internal use only */
const char *name; /* Cipher name (use the module name) */
encrypt_func_t encrypt; /* Cipher functions */
decrypt_func_t decrypt;
check_password_func_t check_password;
};
/* Register a new cipher. */
extern void register_cipher(CipherInfo *ci);
/* Unregister a cipher. Does nothing if the cipher was not registered. */
extern void unregister_cipher(CipherInfo *ci);
/*************************************************************************/
#endif /* ENCRYPT_H */
/*
* Local variables:
* c-file-style: "stroustrup"
* c-file-offsets: ((case-label . *) (statement-case-intro . *))
* indent-tabs-mode: nil
* End:
*
* vim: expandtab shiftwidth=4:
*/

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/* General prototypes and external variable declarations.
*
* IRC Services is copyright (c) 1996-2009 Andrew Church.
* E-mail: <achurch@achurch.org>
* Parts written by Andrew Kempe and others.
* This program is free but copyrighted software; see the file GPL.txt for
* details.
*/
#ifndef EXTERN_H
#define EXTERN_H
#define E extern /* This is used in other files as well */
/**** actions.c ****/
E int actions_init(int ac, char **av);
E void actions_cleanup(void);
E int bad_password(const char *service, User *u, const char *what);
E void clear_channel(Channel *chan, int what, const void *param);
E const char *set_clear_channel_sender(const char *newsender);
E void kill_user(const char *source, const char *user, const char *reason);
E void set_topic(const char *source, Channel *c, const char *topic,
const char *setter, time_t time);
E void set_cmode(const char *sender, Channel *channel, ...);
/**** channels.c ****/
E Channel *get_channel(const char *chan);
E Channel *first_channel(void);
E Channel *next_channel(void);
E int channel_init(int ac, char **av);
E void channel_cleanup(void);
E void get_channel_stats(long *nrec, long *memuse);
E Channel *chan_adduser(User *user, const char *chan, int32 modes);
E void chan_deluser(User *user, Channel *c);
E int chan_has_ban(const char *chan, const char *ban);
E void do_cmode(const char *source, int ac, char **av);
E void do_topic(const char *source, int ac, char **av);
/**** compat.c ****/
#if !HAVE_HSTRERROR
# undef hstrerror
E const char *hstrerror(int h_errnum);
#endif
#if !HAVE_SNPRINTF
# if BAD_SNPRINTF
# define snprintf my_snprintf
# endif
# define vsnprintf my_vsnprintf
E int vsnprintf(char *buf, size_t size, const char *fmt, va_list args);
E int snprintf(char *buf, size_t size, const char *fmt, ...);
#endif
#if !HAVE_STRTOK
# undef strtok
E char *strtok(char *str, const char *delim);
#endif
#if !HAVE_STRICMP && !HAVE_STRCASECMP
# undef stricmp
# undef strnicmp
E int stricmp(const char *s1, const char *s2);
E int strnicmp(const char *s1, const char *s2, size_t len);
#endif
#if !HAVE_STRDUP && !MEMCHECKS
# undef strdup
E char *strdup(const char *s);
#endif
#if !HAVE_STRSPN
# undef strspn
# undef strcspn
E size_t strspn(const char *s, const char *accept);
E size_t strcspn(const char *s, const char *reject);
#endif
#if !HAVE_STRERROR
# undef strerror
E char *strerror(int errnum);
#endif
#if !HAVE_STRSIGNAL
# undef strsignal
E char *strsignal(int signum);
#endif
/**** init.c ****/
E char **LoadModules;
E int LoadModules_count;
E char **LoadLanguageText;
E int LoadLanguageText_count;
E char * RemoteServer;
E int32 RemotePort;
E char * RemotePassword;
E char * LocalHost;
E int32 LocalPort;
E char * ServerName;
E char * ServerDesc;
E char * ServiceUser;
E char * ServiceHost;
E char * LogFilename;
E char PIDFilename[PATH_MAX+1];
E char * MOTDFilename;
E char * LockFilename;
E int16 DefTimeZone;
E int NoBouncyModes;
E int NoSplitRecovery;
E int StrictPasswords;
E int NoAdminPasswordCheck;
E int32 BadPassLimit;
E time_t BadPassTimeout;
E int32 BadPassWarning;
E int32 IgnoreDecay;
E double IgnoreThreshold;
E time_t UpdateTimeout;
E time_t WarningTimeout;
E int32 ReadTimeout;
E int32 TimeoutCheck;
E time_t PingFrequency;
E int32 MergeChannelModes;
E int32 TotalNetBufferSize;
E int32 NetBufferSize;
E int32 NetBufferLimitInactive;
E int32 NetBufferLimitIgnore;
E char * EncryptionType;
E char * GuestNickPrefix;
E char **RejectEmail;
E int RejectEmail_count;
E int32 ListMax;
E int LogMaxUsers;
E int EnableGetpass;
E int WallAdminPrivs;
E int introduce_user(const char *user);
E int init(int ac, char **av);
E int reconfigure(void);
E void cleanup(void);
/**** ignore.c ****/
E void ignore_init(User *u);
E void ignore_update(User *u, uint32 msec);
/**** main.c ****/
E const char *services_dir;
E int debug;
E int readonly;
E int nofork;
E int noexpire;
E int noakill;
E int forceload;
E int encrypt_all;
E int linked;
E int quitting;
E int delayed_quit;
E int restart;
E char quitmsg[BUFSIZE];
E char inbuf[BUFSIZE];
E Socket *servsock;
E int save_data;
E time_t start_time;
E int openlog_failed, openlog_errno;
E int cb_connect;
E int cb_save_complete;
E void connect_callback(Socket *s, void *param_unused);
E void disconnect_callback(Socket *s, void *param);
E void readfirstline_callback(Socket *s, void *param_unused);
E void readline_callback(Socket *s, void *param_unused);
E int lock_data(void);
E int is_data_locked(void);
E int unlock_data(void);
E void save_data_now(void);
/**** messages.c ****/
E int allow_ignore;
/* rest is in messages.h */
/**** misc.c ****/
E unsigned char irc_lowertable[256];
E unsigned char irc_tolower(char c);
#define irc_tolower(c) (irc_lowertable[(uint8)(c)]) /* for speed */
E int irc_stricmp(const char *s1, const char *s2);
E int irc_strnicmp(const char *s1, const char *s2, int max);
E char *strscpy(char *d, const char *s, size_t len);
E char *strmove(char *d, const char *s);
E char *stristr(const char *s1, const char *s2);
E char *strupper(char *s);
E char *strlower(char *s);
E char *strnrepl(char *s, int32 size, const char *old, const char *new);
E char *strtok_remaining(void);
/* strbcpy(): strscpy() for a char array destination; uses sizeof(d) as
* the size to copy */
#define strbcpy(d,s) strscpy((d), (s), sizeof(d))
E char *merge_args(int argc, char **argv);
E int match_wild(const char *pattern, const char *str);
E int match_wild_nocase(const char *pattern, const char *str);
E unsigned char valid_nick_table[0x10000];
E unsigned char valid_chan_table[0x10000];
E int valid_nick(const char *str);
E int valid_chan(const char *str);
E int valid_domain(const char *str);
E int valid_email(const char *str);
E int valid_url(const char *str);
E int rejected_email(const char *email);
E uint32 time_msec(void);
E time_t strtotime(const char *str, char **endptr);
E int dotime(const char *s);
E uint8 *pack_ip(const char *ipaddr);
E char *unpack_ip(const uint8 *ip);
E uint8 *pack_ip6(const char *ipaddr);
E char *unpack_ip6(const uint8 *ip);
E int encode_base64(const void *in, int insize, char *out, int outsize);
E int decode_base64(const char *in, void *out, int outsize);
typedef int (*range_callback_t)(int num, va_list args);
E int process_numlist(const char *numstr, int *count_ret,
range_callback_t callback, ...);
E long atolsafe(const char *s, long min, long max);
/**** process.c ****/
E int split_buf(char *buf, char ***argv, int colon_special);
E int process_init(int ac, char **av);
E void process_cleanup(void);
E void process(void);
/**** servers.c ****/
E Server *get_server(const char *servername);
E Server *first_server(void);
E Server *next_server(void);
E int server_init(int ac, char **av);
E void server_cleanup(void);
E void get_server_stats(long *nservers, long *memuse);
E void do_server(const char *source, int ac, char **av);
E void do_squit(const char *source, int ac, char **av);
/**** signals.c ****/
E void init_signals(void);
E void do_sigsetjmp(void *bufptr); /* actually a sigjmp_buf * */
E void enable_signals(void);
E void disable_signals(void);
/**** users.c ****/
E int32 usercnt, opcnt;
E User *get_user(const char *nick);
E User *first_user(void);
E User *next_user(void);
E void quit_user(User *user, const char *quitmsg, int is_kill);
E int user_init(int ac, char **av);
E void user_cleanup(void);
E void get_user_stats(long *nusers, long *memuse);
E int do_nick(const char *source, int ac, char **av);
E void do_join(const char *source, int ac, char **av);
E void do_part(const char *source, int ac, char **av);
E void do_kick(const char *source, int ac, char **av);
E void do_umode(const char *source, int ac, char **av);
E void do_quit(const char *source, int ac, char **av);
E void do_kill(const char *source, int ac, char **av);
E Channel *join_channel(User *user, const char *channel, int32 modes);
E int part_channel(User *user, const char *channel, int callback,
const char *param, const char *source);
E void part_all_channels(User *user);
E int is_oper(const User *user);
E Channel *is_on_chan(const User *user, const char *chan);
E int is_chanop(const User *user, const char *chan);
E int is_voiced(const User *user, const char *chan);
E int match_usermask(const char *mask, const User *user);
E void split_usermask(const char *mask, char **nick, char **user, char **host);
E char *create_mask(const User *user, int use_fakehost);
E char *make_guest_nick(void);
E int is_guest_nick(const char *nick);
#endif /* EXTERN_H */
/*
* Local variables:
* c-file-style: "stroustrup"
* c-file-offsets: ((case-label . *) (statement-case-intro . *))
* indent-tabs-mode: nil
* End:
*
* vim: expandtab shiftwidth=4:
*/

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/* Declarations for hash tables.
*
* IRC Services is copyright (c) 1996-2009 Andrew Church.
* E-mail: <achurch@achurch.org>
* Parts written by Andrew Kempe and others.
* This program is free but copyrighted software; see the file GPL.txt for
* details.
*/
/* This file allows code to define a simple hash table and associated
* functions using a simple macro. After including this file, hash tables
* can be defined with DEFINE_HASH() or DEFINE_HASH_SCALAR(); the former is
* for string (char *) keys, the latter for scalar (int, etc.) keys. The
* format for these macros is:
* DEFINE_HASH[_SCALAR](name, type, keyfield [, keytype])
* where:
* `name' is the name to be used in the hash table functions,
* `type' is the type of the elements to be stored in the hash table
* (e.g. `struct mystruct' or `MyType'); this must be a
* structured type,
* `keyfield' is the field in `type' containing the key to be used to
* index the element, and
* `keytype' (only for DEFINE_HASH_SCALAR) is the type of `keyfield'.
*
* The default hash function:
* - if HASH_SORTED is defined to a nonzero value, converts the first
* two bytes of the value of `keyfield' to a pair of five-bit values,
* for a total of 1024 slots, with the conversion controlled by the
* `hashlookup' array (defined static const by this file);
* - if HASH_SORTED is not defined or is defined to 0, treats `keyfield'
* as a string and generates a hash key from the entire string,
* hashing into a table of 65537 slots.
* If you want a different hash function, redefine HASHFUNC and HASHSIZE
* (see below) before defining the hash table; in particular, scalar keys
* cannot be used with the default hash function, and require a different
* hash function to be defined.
*
* The functions defined by this file are as follows (the strings `<name>',
* `<type>', and `<keytype>' refer to the corresponding parameters given to
* the DEFINE_HASH[_SCALAR] macro):
*
* void add_<name>(<type> *node)
* Adds the given node to the hash table.
*
* void del_<name>(<type> *node)
* Removes the given node from the hash table.
*
* <type> *get_<name>(const char *key) (for string keys)
* <type> *get_<name>(<keytype> key) (for scalar keys)
* If an element with the given key is stored in the hash table,
* returns a pointer to that element; otherwise, returns NULL.
*
* <type> *first_<name>(void)
* <type> *next_<name>(void)
* These functions iterate over all elements in the hash table.
* For hashes with string keys, elements are returned in lexical
* order by key if HASH_SORTED is defined (see below).
* first_<name>() initializes the iterator to the first element in
* the hash table and returns it; next_<name>() returns subsequent
* elements, one at a time, until all elements have been returned, at
* which point it returns NULL until first_<name>() is called again.
* If there are no elements in the hash table, first_<name>() will
* return NULL (as will next_<name>()). It is safe to delete
* elements, including the current element, while iterating. If an
* element is added while iterating, it is undefined whether that
* element will be returned by next_<name>() before the end of the
* hash table is reached.
*
* This file and the hash tables it generates are controlled by the
* following #define's:
* EXPIRE_CHECK(node): Define to an expression used to check whether a
* given entry has expired. Initially defined to
* `0' (no expiration) if not otherwise defined when
* this file is included.
* HASH_STATIC: Define to either `static' or nothing, to control whether
* hash functions are declared static or not. Defaults to
* nothing (functions are not static). The hash table
* structures themselves are always static.
* HASHFUNC/ Define these if you want your own hash function. Defaults
* HASHSIZE: to the standard hash function. If you redefine these once,
* you can restore them to the defaults by defining them to
* DEFAULT_HASHFUNC(key) and DEFAULT_HASHSIZE.
* HASH_SORTED: Define (to a nonzero value) or undefine _before_
* including this file_ to select the type of default hash
* function (see above).
*
* Note that the above defines (except HASH_SORTED) take effect when hash
* tables are actually defined, not when this file is included, so the
* defines can be changed at will for different hashes.
*/
#ifndef HASH_H
#define HASH_H
/*************************************************************************/
#ifndef EXPIRE_CHECK
# define EXPIRE_CHECK(node) 0
#endif
#ifndef HASH_STATIC
# define HASH_STATIC /*nothing*/
#endif
/*************************************************************************/
/* Generic hash function and associated lookup table. */
#if HASH_SORTED
# define DEFAULT_HASHFUNC(key) \
(__hashlookup[(uint8)(*(key))]<<5 \
| (*(key) ? __hashlookup[(uint8)((key)[1])] : 0))
# define DEFAULT_HASHSIZE 1024
static const uint8 __hashlookup[256] = {
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
0, 1, 2, 3, 4, 5, 6, 7, 8, 9,10,11,12,13,14,15,
16,17,18,19,20,21,22,23,24,25,26,27,28,29, 0, 0,
0, 1, 2, 3, 4, 5, 6, 7, 8, 9,10,11,12,13,14,15,
16,17,18,19,20,21,22,23,24,25,26,27,28,29,30,30,
31,31,31,31,31,31,31,31,31,31,31,31,31,31,31,31,
31,31,31,31,31,31,31,31,31,31,31,31,31,31,31,31,
31,31,31,31,31,31,31,31,31,31,31,31,31,31,31,31,
31,31,31,31,31,31,31,31,31,31,31,31,31,31,31,31,
31,31,31,31,31,31,31,31,31,31,31,31,31,31,31,31,
31,31,31,31,31,31,31,31,31,31,31,31,31,31,31,31,
31,31,31,31,31,31,31,31,31,31,31,31,31,31,31,31,
31,31,31,31,31,31,31,31,31,31,31,31,31,31,31,31,
};
#else /* !HASH_SORTED */
# define DEFAULT_HASHFUNC(key) (__default_hashfunc(key))
# define DEFAULT_HASHSIZE 65537
static const uint8 __hashlookup_unsorted[256] = {
0x00,0x01,0x02,0x03,0x04,0x05,0x06,0x07,
0x08,0x09,0x0A,0x0B,0x0C,0x0D,0x0E,0x0F,
0x10,0x11,0x12,0x13,0x14,0x15,0x16,0x17,
0x18,0x19,0x1A,0x1B,0x1C,0x1D,0x1E,0x1F,
0x20,0x21,0x22,0x23,0x24,0x25,0x26,0x27,
0x28,0x29,0x2A,0x2B,0x2C,0x2D,0x2E,0x2F,
0x30,0x31,0x32,0x33,0x34,0x35,0x36,0x37,
0x38,0x39,0x3A,0x3B,0x3C,0x3D,0x3E,0x3F,
0x40,0x61,0x62,0x63,0x64,0x65,0x66,0x67,
0x68,0x69,0x6A,0x6B,0x6C,0x6D,0x6E,0x6F,
0x70,0x71,0x72,0x73,0x74,0x75,0x76,0x77,
0x78,0x79,0x7A,0x7B,0x7C,0x7D,0x5E,0x5F,
0x60,0x61,0x62,0x63,0x64,0x65,0x66,0x67,
0x68,0x69,0x6A,0x6B,0x6C,0x6D,0x6E,0x6F,
0x70,0x71,0x72,0x73,0x74,0x75,0x76,0x77,
0x78,0x79,0x7A,0x7B,0x7C,0x7D,0x7E,0x7F,
0x80,0x81,0x82,0x83,0x84,0x85,0x86,0x87,
0x88,0x89,0x8A,0x8B,0x8C,0x8D,0x8E,0x8F,
0x90,0x91,0x92,0x93,0x94,0x95,0x96,0x97,
0x98,0x99,0x9A,0x9B,0x9C,0x9D,0x9E,0x9F,
0xA0,0xA1,0xA2,0xA3,0xA4,0xA5,0xA6,0xA7,
0xA8,0xA9,0xAA,0xAB,0xAC,0xAD,0xAE,0xAF,
0xB0,0xB1,0xB2,0xB3,0xB4,0xB5,0xB6,0xB7,
0xB8,0xB9,0xBA,0xBB,0xBC,0xBD,0xBE,0xBF,
0xC0,0xC1,0xC2,0xC3,0xC4,0xC5,0xC6,0xC7,
0xC8,0xC9,0xCA,0xCB,0xCC,0xCD,0xCE,0xCF,
0xD0,0xD1,0xD2,0xD3,0xD4,0xD5,0xD6,0xD7,
0xD8,0xD9,0xDA,0xDB,0xDC,0xDD,0xDE,0xDF,
0xE0,0xE1,0xE2,0xE3,0xE4,0xE5,0xE6,0xE7,
0xE8,0xE9,0xEA,0xEB,0xEC,0xED,0xEE,0xEF,
0xF0,0xF1,0xF2,0xF3,0xF4,0xF5,0xF6,0xF7,
0xF8,0xF9,0xFA,0xFB,0xFC,0xFD,0xFE,0xFF,
};
static inline int __default_hashfunc(const char *key_) {
const uint8 *key = (const uint8 *)key_;
int hash = 0;
while (*key) {
hash = (hash*31 + __hashlookup_unsorted[*key]) % DEFAULT_HASHSIZE;
key++;
}
return hash;
}
#endif /* HASH_SORTED */
#ifndef HASHFUNC
# define HASHFUNC(key) DEFAULT_HASHFUNC(key)
#endif
#ifndef HASHSIZE
# define HASHSIZE DEFAULT_HASHSIZE
#endif
/*************************************************************************/
/* Templates for creating hash table definitions and functions.
* HASH_STATIC should be defined to either `static' or nothing beforehand.
*/
#undef DEFINE_HASHTABLE
#define DEFINE_HASHTABLE(name, type) \
static type *hashtable_##name[HASHSIZE];
#undef DEFINE_HASH_ITER
#define DEFINE_HASH_ITER(name,type) \
static int hashpos_##name; \
static type *hashiter_##name; \
static void _next_##name(void) \
{ \
if (hashiter_##name) \
hashiter_##name = hashiter_##name->next; \
while (hashiter_##name == NULL && ++hashpos_##name < HASHSIZE) \
hashiter_##name = hashtable_##name[hashpos_##name]; \
} \
HASH_STATIC type *next_##name(void) \
{ \
type *retval; \
do { \
retval = hashiter_##name; \
if (retval == NULL) \
return NULL; \
_next_##name(); \
} while (!noexpire && EXPIRE_CHECK(retval)); \
return retval; \
} \
HASH_STATIC type *first_##name(void) \
{ \
hashpos_##name = -1; \
hashiter_##name = NULL; \
_next_##name(); \
return next_##name(); \
}
#undef DEFINE_HASH_ADD
#define DEFINE_HASH_ADD(name,type,keyfield) \
HASH_STATIC void add_##name(type *node) \
{ \
type **listptr = &hashtable_##name[HASHFUNC(node->keyfield)]; \
LIST_INSERT_ORDERED(node, *listptr, irc_stricmp, keyfield); \
}
#undef DEFINE_HASH_ADD_SCALAR
#define DEFINE_HASH_ADD_SCALAR(name,type,keyfield) \
HASH_STATIC void add_##name(type *node) \
{ \
type **listptr = &hashtable_##name[HASHFUNC(node->keyfield)]; \
LIST_INSERT(node, *listptr); \
}
#undef DEFINE_HASH_DEL
#define DEFINE_HASH_DEL(name,type,keyfield) \
HASH_STATIC void del_##name(type *node) \
{ \
if (node == hashiter_##name) \
_next_##name(); \
LIST_REMOVE(node, hashtable_##name[HASHFUNC(node->keyfield)]); \
}
#undef DEFINE_HASH_GET
#define DEFINE_HASH_GET(name,type,keyfield) \
HASH_STATIC type *get_##name(const char *what) \
{ \
type *result; \
LIST_SEARCH_ORDERED(hashtable_##name[HASHFUNC(what)], \
keyfield, what, irc_stricmp, result); \
if (result && !noexpire && EXPIRE_CHECK(result)) \
result = NULL; \
return result; \
}
#undef DEFINE_HASH_GET_SCALAR
#define DEFINE_HASH_GET_SCALAR(name,type,keyfield,keytype) \
HASH_STATIC type *get_##name(keytype what) \
{ \
type *result; \
LIST_SEARCH_SCALAR(hashtable_##name[HASHFUNC(what)], \
keyfield, what, result); \
if (result && !noexpire && EXPIRE_CHECK(result)) \
result = NULL; \
return result; \
}
/* Macros to create everything at once for a given type.
* name: Name to use in the hash functions (the XXX in add_XXX, etc.)
* type: Type of the hash (NickInfo, etc.)
* keyfield: Key field in given type
*/
#undef DEFINE_HASH
#define DEFINE_HASH(name,type,keyfield) \
DEFINE_HASHTABLE(name, type) \
DEFINE_HASH_ITER(name, type) \
DEFINE_HASH_ADD(name, type, keyfield) \
DEFINE_HASH_DEL(name, type, keyfield) \
DEFINE_HASH_GET(name, type, keyfield)
#undef DEFINE_HASH_SCALAR
#define DEFINE_HASH_SCALAR(name,type,keyfield,keytype) \
DEFINE_HASHTABLE(name, type) \
DEFINE_HASH_ITER(name, type) \
DEFINE_HASH_ADD_SCALAR(name, type, keyfield) \
DEFINE_HASH_DEL(name, type, keyfield) \
DEFINE_HASH_GET_SCALAR(name, type, keyfield, keytype)
/*************************************************************************/
#endif /* HASH_H */
/*
* Local variables:
* c-file-style: "stroustrup"
* c-file-offsets: ((case-label . *) (statement-case-intro . *))
* indent-tabs-mode: nil
* End:
*
* vim: expandtab shiftwidth=4:
*/

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/* Ignore handling.
*
* IRC Services is copyright (c) 1996-2009 Andrew Church.
* E-mail: <achurch@achurch.org>
* Parts written by Andrew Kempe and others.
* This program is free but copyrighted software; see the file GPL.txt for
* details.
*/
#include "services.h"
/*************************************************************************/
/* ignore_init: Initialize ignore-related fields of a new User structure. */
void ignore_init(User *u)
{
u->ignore = 0;
u->lastcmd = time_msec();
u->lastcmd_s = time(NULL);
}
/*************************************************************************/
/* ignore_update: Update the user's ignore level. The "ignore level" is a
* measure of how much time Services has spent processing
* this user's commands, and is calculated as a decaying
* average of the fraction of time spent on the user's
* commands over the total time Services has been running--
* more specifically, the average over time of a function
* whose value is 1 when Services is executing a command
* from the user and 0 at all other times. The rate of
* decay of the average, and hence the rate of response to
* new commands, is dependent on the IgnoreDecay
* configuration setting: the average decays by half every
* IgnoreDecay milliseconds (note that the value is given as
* seconds in the configuration file).
* The `msec' parameter to this function is the length
* of time taken by the most recent command (which caused
* this update). `msec' may be specified as zero to update
* the user's ignore level at any time.
*/
void ignore_update(User *u, uint32 msec)
{
time_t now;
uint32 now_msec;
if (!IgnoreDecay) {
/* Ignore code disabled, just return */
return;
}
now = time(NULL);
now_msec = time_msec();
if (now - u->lastcmd_s > 1000000) {
/* Millisecond counter may have overflowed, just reset to 0 */
u->ignore = 0;
} else {
double zerolen = (now_msec - msec) - u->lastcmd;
if (zerolen > 0)
u->ignore *= pow(2, -(zerolen / IgnoreDecay));
}
if (msec) {
double factor;
while (msec > IgnoreDecay) {
u->ignore = u->ignore*0.5 + 0.5;
msec -= IgnoreDecay;
}
factor = pow(2, -((double)msec / IgnoreDecay));
u->ignore = u->ignore*factor + (1-factor);
}
u->lastcmd = now_msec;
u->lastcmd_s = now;
}
/*************************************************************************/
/*
* Local variables:
* c-file-style: "stroustrup"
* c-file-offsets: ((case-label . *) (statement-case-intro . *))
* indent-tabs-mode: nil
* End:
*
* vim: expandtab shiftwidth=4:
*/

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#!/bin/sh
SRC=""; DEST=""; MODE=""; USER=""; GROUP=""; ISDIR=""
export SRC DEST MODE USER GROUP ISDIR
while [ $# -gt 0 ]; do
case $1 in
-m) MODE=$2; shift; shift;;
-u) USER=$2; shift; shift;;
-g) GROUP=$2; shift; shift;;
-d) ISDIR=1; shift;;
-c) shift;;
*) SRC="$DEST"; DEST="$1"; shift;;
esac
done
if [ ! "$DEST" ]; then
echo >&2 "Usage: $0 [-c] [-m mode] [-u user] [-g group] source dest"
exit 1
fi
if [ "$ISDIR" ]; then
mkdir -p "$DEST"
else
if [ -d "$DEST" ]; then
DEST="$DEST/$SRC"
fi
/bin/cp -p "$SRC" "$DEST"
fi
if [ "$USER" ]; then
/bin/chown "$USER" "$DEST"
fi
if [ "$GROUP" ]; then
/bin/chgrp "$GROUP" "$DEST"
fi
if [ "$MODE" ]; then
/bin/chmod "$MODE" "$DEST"
fi
# Local variables:
# indent-tabs-mode: nil
# End:
#
# vim: expandtab shiftwidth=4:

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/* Multi-language support.
*
* IRC Services is copyright (c) 1996-2009 Andrew Church.
* E-mail: <achurch@achurch.org>
* Parts written by Andrew Kempe and others.
* This program is free but copyrighted software; see the file GPL.txt for
* details.
*/
#define LANGSTR_ARRAY /* define langstrs[] in langstrs.h, via language.h */
#include "services.h"
#include "language.h"
/* Needed for NickGroupInfo structure definition (used by getstring() and
* strftime_lang()) */
#include "modules/nickserv/nickserv.h"
/*************************************************************************/
/* Indexes of available languages (exported), terminated by -1: */
int langlist[NUM_LANGS+1];
/* List and count of available strings: */
static char **langstrs;
int num_strings;
/* The list of lists of messages. */
static char **langtexts[NUM_LANGS];
/* Pointers to the original data, in case external files are loaded later. */
static char **origtexts[NUM_LANGS];
/* Order in which languages should be displayed: (alphabetical in English) */
static int langorder[] = {
LANG_EN_US, /* English (US) */
LANG_NL, /* Dutch */
LANG_FR, /* French */
LANG_DE, /* German */
LANG_HU, /* Hungarian */
/* LANG_IT,*/ /* Italian */
LANG_JA_EUC, /* Japanese (EUC encoding) */
LANG_JA_SJIS, /* Japanese (SJIS encoding) */
/* LANG_PT,*/ /* Portugese */
LANG_RU, /* Russian */
LANG_ES, /* Spanish */
LANG_TR, /* Turkish */
};
/* Filenames for language files: */
static struct {
int num;
const char *filename;
} filenames[] = {
{ LANG_EN_US, "en_us" },
{ LANG_NL, "nl" },
{ LANG_FR, "fr" },
{ LANG_DE, "de" },
{ LANG_HU, "hu" },
{ LANG_IT, "it" },
{ LANG_JA_EUC, "ja_euc" },
{ LANG_JA_SJIS, "ja_sjis" },
{ LANG_PT, "pt" },
{ LANG_RU, "ru" },
{ LANG_ES, "es" },
{ LANG_TR, "tr" },
{ -1, NULL }
};
/* Mapping of language strings (to allow on-the-fly replacement of strings) */
static int *langmap;
/* Array indicating which languages were actually loaded (needed since NULL
* langtexts[] pointers are redirected to DEF_LANGUAGE) */
static int is_loaded[NUM_LANGS];
/* Index of the first extra (non-base) string */
#define FIRST_EXTRA_STRING (NUM_BASE_STRINGS)
/* Is the given string index a base string index? */
#define IS_BASE_STRING(n) ((n) < FIRST_EXTRA_STRING)
/*************************************************************************/
/*************************************************************************/
/* Helper functions. */
static inline int read_int32(int32 *ptr, FILE *f)
{
int a = fgetc(f);
int b = fgetc(f);
int c = fgetc(f);
int d = fgetc(f);
if (a == EOF || b == EOF || c == EOF || d == EOF)
return -1;
*ptr = a<<24 | b<<16 | c<<8 | d;
return 0;
}
static inline int read_uint32(uint32 *ptr, FILE *f)
{
return read_int32((int32 *)ptr, f);
}
/*************************************************************************/
/*************************************************************************/
/* Load a language file, storing the data in origtexts[index]. */
static void load_lang(int index, const char *filename)
{
char buf[256];
FILE *f;
uint32 num, size, i;
char *data = NULL;
log_debug(1, "Loading language %d from file `languages/%s'",
index, filename);
snprintf(buf, sizeof(buf), "languages/%s", filename);
if (!(f = fopen(buf, "r"))) {
log_perror("Failed to load language %d (%s)", index, filename);
return;
} else if (read_uint32(&num, f) < 0) {
log("Failed to read number of strings for language %d (%s)",
index, filename);
return;
} else if (read_uint32(&size, f) < 0) {
log("Failed to read data size for language %d (%s)",
index, filename);
return;
} else if (num != NUM_BASE_STRINGS) {
log("Warning: Bad number of strings (%d, wanted %d) "
"for language %d (%s)", num, NUM_BASE_STRINGS, index, filename);
}
origtexts[index] = scalloc(sizeof(char *), NUM_BASE_STRINGS+1);
if (num > NUM_BASE_STRINGS)
num = NUM_BASE_STRINGS;
origtexts[index][0] = data = smalloc(size+4);
*((uint32 *)data) = size;
data += 4;
if (fread(data, size, 1, f) != 1) {
log("Failed to read language data for language %d (%s)",
index, filename);
goto fail;
}
for (i = 0; i < num; i++) {
int32 pos;
if (read_int32(&pos, f) < 0) {
log("Failed to read entry %d in language %d (%s) TOC",
i, index, filename);
goto fail;
}
if (pos == -1) {
origtexts[index][i+1] = NULL;
} else {
origtexts[index][i+1] = data + pos;
}
}
fclose(f);
is_loaded[index] = 1;
return;
fail:
free(data);
free(origtexts[index]);
origtexts[index] = NULL;
return;
}
/*************************************************************************/
/* Initialize list of lists. */
int lang_init(void)
{
int i, j, n = 0;
/* Set up the string list */
langstrs = malloc(sizeof(char *) * NUM_BASE_STRINGS);
if (!langstrs) {
log_perror("malloc(langstrs)");
return 0;
}
memcpy(langstrs, base_langstrs, sizeof(char *) * NUM_BASE_STRINGS);
num_strings = NUM_BASE_STRINGS;
/* Set up the string remap list */
langmap = smalloc(sizeof(int) * num_strings);
for (i = 0; i < num_strings; i++)
langmap[i] = i;
/* Load language files */
memset(is_loaded, 0, sizeof(is_loaded));
for (i = 0; i < lenof(langorder); i++) {
for (j = 0; filenames[j].num >= 0; j++) {
if (filenames[j].num == langorder[i])
break;
}
if (filenames[j].num >= 0) {
load_lang(langorder[i], filenames[j].filename);
} else {
log("BUG: lang_init(): no filename entry for language %d!",
langorder[i]);
}
}
/* Make sure the default language has all strings available */
if (!origtexts[DEF_LANGUAGE]) {
log("Unable to load default language");
return 0;
}
for (i = 0; i < num_strings; i++) {
if (!origtexts[DEF_LANGUAGE][i+1]) {
if (is_loaded[LANG_EN_US] && origtexts[LANG_EN_US][i+1]) {
uint32 oldsize = *((uint32 *)origtexts[DEF_LANGUAGE][0]);
uint32 newsize = strlen(origtexts[LANG_EN_US][i+1]) + 1;
origtexts[DEF_LANGUAGE][0] =
realloc(origtexts[DEF_LANGUAGE][0], oldsize + newsize + 4);
if (!origtexts[DEF_LANGUAGE][0]) {
log("Out of memory while loading languages");
return 0;
}
*((uint32 *)origtexts[DEF_LANGUAGE][0]) = oldsize + newsize;
origtexts[DEF_LANGUAGE][i+1] =
origtexts[DEF_LANGUAGE][0] + 4 + oldsize;
strcpy(origtexts[DEF_LANGUAGE][i+1],
origtexts[LANG_EN_US][i+1]);
} else {
log("String %s missing from default language", langstrs[i]);
return 0;
}
}
}
/* Set up the list of available languages in langlist[] */
for (i = 0; i < lenof(langorder); i++) {
if (is_loaded[langorder[i]])
langlist[n++] = langorder[i];
}
while (n < lenof(langlist))
langlist[n++] = -1;
/* Initialize the active string tables in langtexts[] */
reset_ext_lang();
return 1;
}
/*************************************************************************/
/* Clean up language data. */
void lang_cleanup(void)
{
int i;
for (i = 0; i < NUM_LANGS; i++) {
if (langtexts[i]) {
free(langtexts[i][0]);
free(langtexts[i]);
langtexts[i] = NULL;
}
if (origtexts[i]) {
free(origtexts[i][0]);
free(origtexts[i]);
langtexts[i] = NULL;
}
}
free(langmap);
free(langstrs);
}
/*************************************************************************/
/* Load an external language file. External language files are formatted
* the same way as the standard language files, except that a language name
* follows the string name; for example:
*
* UNKNOWN_COMMAND<lwsp+>en_us<lwsp*><nl>
* <tab>The command %s is not recognized.<nl>
*
* where <lwsp> is "linear white space" (space or tab); <nl> is either LF
* or CRLF; and <tab> is the tab character. Empty lines and lines
* beginning with '#' are ignored. Note that any lines longer than
* BUFSIZE-1 characters (including the trailing <nl>) will be truncated.
*
* Returns 0 on failure, nonzero on success.
*/
int load_ext_lang(const char *filename)
{
FILE *f;
char buf[BUFSIZE], *s;
char **newtexts[NUM_LANGS];
uint32 newsizes[NUM_LANGS];
int i, curstr, curlang, line;
int retval = 1, firstline = 1;
memset(newtexts, 0, sizeof(newtexts));
memset(newsizes, 0, sizeof(newsizes));
f = fopen(filename, "r");
if (!f) {
log_perror("load_ext_lang(): Unable to open file %s", filename);
return 0;
}
curstr = curlang = -1;
line = 0;
while (fgets(buf, sizeof(buf), f) && *buf) {
line++;
s = buf + strlen(buf) - 1;
if (*s == '\r') { /* in case we get half a CRLF */
*s = fgetc(f);
if (*s != '\n') {
ungetc(*s, f);
*s = '\r';
}
}
if (*s == '\n') {
*s = 0;
if (s > buf && s[-1] == '\r')
s[-1] = 0;
} else {
char buf2[BUFSIZE];
log("load_ext_lang(): %s:%d: Line too long (maximum %d"
" characters)", filename, line, sizeof(buf)-2);
retval = 0;
while (fgets(buf2, sizeof(buf2), f)
&& *buf2 && buf2[strlen(buf2)-1] != '\n')
;
}
if (*buf == '#')
continue;
if (*buf != '\t') {
curstr = curlang = -1;
s = strtok(buf, " \t\r\n");
if (!s)
continue; /* empty line */
if ((curstr = lookup_string(s)) < 0) {
log("load_ext_lang: %s:%d: Unknown string ID `%s'",
filename, line, s);
retval = 0;
} else {
s = strtok(NULL, " \t\r\n");
if (!s) {
log("load_ext_lang: %s:%d: Missing language ID\n",
filename, line);
retval = 0;
curstr = -1;
} else if ((curlang = lookup_language(s)) < 0) {
log("load_ext_lang: %s:%d: Unknown language ID `%s'",
filename, line, s);
retval = 0;
curstr = -1;
} else if (!is_loaded[curlang]) {
log("load_ext_lang: %s:%d: Language `%s' is not"
" available", filename, line, s);
retval = 0;
curstr = -1;
}
}
if (curstr >= 0 && curlang >= 0) {
/* Valid string/language ID--set up storage space if not
* yet done */
if (!newtexts[curlang]) {
newtexts[curlang] = calloc(num_strings+1, sizeof(char *));
if (!newtexts[curlang]) {
log_perror("load_ext_lang: %s:%d", filename, line);
goto fail;
}
newsizes[curlang] = 0;
}
/* Point to location of string in data buffer; we add 1
* to the offset to differentiate the value from 0 (not
* present) */
newtexts[curlang][curstr+1] = (char *)newsizes[curlang] + 1;
/* Set first-line flag (signals whether to insert a
* newline) */
firstline = 1;
}
} else { /* line begins with tab -> text line */
if (curstr >= 0 && curlang >= 0) {
int oldsize = newsizes[curlang];
if (!firstline)
oldsize--; // overwrite the trailing \0 with a newline
newsizes[curlang] += strlen(buf+1)+1; // skip initial tab
newtexts[curlang][0] =
realloc(newtexts[curlang][0], newsizes[curlang]);
sprintf(newtexts[curlang][0]+oldsize, "%s%s",
firstline ? "" : "\n", buf+1);
firstline = 0;
}
}
} /* for each line */
fclose(f);
if (retval) {
/* Success, install new strings. First set up new string arrays in
* newtexts[], then, when all succeeds (i.e. no ENOMEM), move the
* new data to langtexts[]. */
for (curlang = 0; curlang < NUM_LANGS; curlang++) {
char *newbuf;
uint32 oldlen, newlen;
if (!newtexts[curlang])
continue;
oldlen = *((uint32 *)langtexts[curlang][0]);
newlen = newsizes[curlang];
newbuf = malloc(4 + oldlen + newlen);
if (!newbuf) {
log_perror("load_ext_lang: %s:%d", filename, line);
goto fail;
}
*((uint32 *)newbuf) = oldlen + newlen;
memcpy(newbuf+4, langtexts[curlang][0]+4, oldlen);
memcpy(newbuf+4+oldlen, newtexts[curlang][0], newlen);
free(newtexts[curlang][0]);
newtexts[curlang][0] = newbuf;
for (i = 0; i < num_strings; i++) {
if (newtexts[curlang][i+1]) {
int ofs = (int)newtexts[curlang][i+1] - 1;
newtexts[curlang][i+1] = newbuf+4 + oldlen + ofs;
} else if (langtexts[curlang][i+1]) {
int ofs = langtexts[curlang][i+1]
- langtexts[curlang][0];
newtexts[curlang][i+1] = newbuf + ofs;
} else {
newtexts[curlang][i+1] = NULL;
}
}
} /* for each language */
/* All okay, actually install the data */
for (curlang = 0; curlang < NUM_LANGS; curlang++) {
if (!newtexts[curlang])
continue;
free(langtexts[curlang][0]);
free(langtexts[curlang]);
langtexts[curlang] = newtexts[curlang];
}
} /* if (retval) */
return retval;
fail:
for (curlang = 0; curlang < NUM_LANGS; curlang++) {
if (newtexts[curlang]) {
free(newtexts[curlang][0]);
free(newtexts[curlang]);
}
}
fclose(f);
return 0;
}
/*************************************************************************/
/* Clear all data loaded from external language files or set with
* setstring(), restoring to the default data sets. Strings added with
* addstring() are retained but reset to empty.
*/
void reset_ext_lang(void)
{
int i, j;
for (i = 0; i < NUM_LANGS; i++) {
if (is_loaded[i]) {
uint32 datasize = *((uint32 *)origtexts[i][0]);
if (langtexts[i]) {
free(langtexts[i][0]);
free(langtexts[i]);
}
langtexts[i] = smalloc(sizeof(char *) * (num_strings+1));
langtexts[i][0] = smalloc(datasize+4);
memcpy(langtexts[i][0], origtexts[i][0], datasize+4);
for (j = 0; j < num_strings; j++) {
if (IS_BASE_STRING(j)) {
if (origtexts[i][j+1]) {
langtexts[i][j+1] = origtexts[i][j+1]
- origtexts[i][0]
+ langtexts[i][0];
} else {
langtexts[i][j+1] = NULL;
}
} else if (i == DEF_LANGUAGE) {
langtexts[i][j+1] = langtexts[i][0] + datasize - 1;
} else {
langtexts[i][j+1] = NULL;
}
}
}
}
}
/*************************************************************************/
/*************************************************************************/
/* Return the language number for the given language name. If the language
* is not found, returns -1.
*/
int lookup_language(const char *name)
{
int i;
for (i = 0; filenames[i].num >= 0; i++) {
if (stricmp(filenames[i].filename, name) == 0)
return filenames[i].num;
}
return -1;
}
/*************************************************************************/
/* Return true if the given language is loaded, false otherwise. */
int have_language(int language)
{
return language >= 0 && language < NUM_LANGS && is_loaded[language];
}
/*************************************************************************/
/* Return the index of the given string name. If the name is not found,
* returns -1. Note that string names are case sensitive.
*/
int lookup_string(const char *name)
{
int i;
for (i = 0; i < num_strings; i++) {
if (strcmp(langstrs[i], name) == 0)
return i;
}
return -1;
}
/*************************************************************************/
/* Retrieve a message text using the language selected for the given
* NickGroupInfo (if NickGroupInfo is NULL, use DEF_LANGUAGE).
*/
const char *getstring(const NickGroupInfo *ngi, int index)
{
int language;
const char *text;
if (index < 0 || index >= num_strings) {
log("getstring(): BUG: index (%d) out of range!", index);
return NULL;
}
language = (ngi && ngi != NICKGROUPINFO_INVALID
&& ngi->language != LANG_DEFAULT)
? ngi->language
: DEF_LANGUAGE;
text = langtexts[language][langmap[index]+1];
if (!text)
text = langtexts[DEF_LANGUAGE][langmap[index]+1];
return text;
}
/*************************************************************************/
/* Retrieve a message text using the given language. */
const char *getstring_lang(int language, int index)
{
const char *text;
if (language < 0 || language >= NUM_LANGS) {
log("getstring_lang(): BUG: language (%d) out of range!", language);
language = DEF_LANGUAGE;
} else if (index < 0 || index >= num_strings) {
log("getstring_lang(): BUG: index (%d) out of range!", index);
return NULL;
}
text = langtexts[language][langmap[index]+1];
if (!text)
text = langtexts[DEF_LANGUAGE][langmap[index]+1];
return text;
}
/*************************************************************************/
/* Set the contents of the given string in the given language. Returns
* nonzero on success, zero on error (invalid parameters or language not
* available). The text is copied to a separate location, so does not need
* to be saved by the caller.
*/
int setstring(int language, int index, const char *text)
{
uint32 oldlen, newlen;
char *oldtext, *newtext;
int i;
if (language < 0 || language >= NUM_LANGS) {
log("setstring(): language (%d) out of range!", language);
return 0;
} else if (index < 0 || index >= num_strings) {
log("setstring(): index (%d) out of range!", index);
return 0;
} else if (IS_BASE_STRING(index)) {
log("setstring(): index (%d) is a base string and cannot be set",
index);
return 0;
} else if (!text) {
log("setstring(): text is NULL!");
return 0;
} else if (!is_loaded[language]) {
log_debug(1, "setstring(): language %d not available", language);
return 0;
}
oldtext = langtexts[language][0];
oldlen = *((uint32 *)oldtext);
newlen = oldlen + strlen(text) + 1;
newtext = malloc(newlen + 4);
if (!newtext) {
log("setstring(): out of memory");
return 0;
}
*((uint32 *)newtext) = newlen;
memcpy(newtext+4, oldtext+4, oldlen);
strcpy(newtext+4+oldlen, text);
for (i = 0; i < num_strings; i++) {
if (i == index) {
langtexts[language][i+1] = newtext+4 + oldlen;
} else {
int ofs = langtexts[language][i+1] - oldtext;
langtexts[language][i+1] = newtext + ofs;
}
}
langtexts[language][0] = newtext;
free(oldtext);
return 1;
}
/*************************************************************************/
/* Map string number `old' to number `new' and return the number of the
* message that used to be stored there. Returns -1 on error (invalid
* parameter).
*/
int mapstring(int old, int new)
{
int prev;
if (old < 0 || old >= num_strings) {
log("mapstring(): old string index (%d) is out of range!", old);
return -1;
} else if (new < 0 || new >= num_strings) {
log("mapstring(): new string index (%d) is out of range!", new);
return -1;
}
prev = langmap[old];
langmap[old] = langmap[new];
return prev;
}
/*************************************************************************/
/* Add a new string to the global list with the given (non-empty) name.
* The string is initially empty in all languages. If the string has
* already been added, clears the string's text but does not add a new copy
* of the string. Returns the string index on success, -1 on failure
* (invalid parameters or attempting to re-add a base string).
*/
int addstring(const char *name)
{
int index, i;
char **new_langstrs, **new_langtexts[NUM_LANGS];
int *new_langmap;
if (!name) {
log("addstring(): BUG: name is NULL!");
return -1;
}
if (!*name) {
log("addstring(): name is the empty string!");
return -1;
}
if ((index = lookup_string(name)) >= 0) {
if (IS_BASE_STRING(index)) {
log("addstring(): attempt to re-add base string `%s'!", name);
return -1;
} else {
return index;
}
}
new_langstrs = malloc(sizeof(char *) * (num_strings+1));
new_langmap = malloc(sizeof(int) * (num_strings+1));
if (!new_langstrs || !new_langmap) {
log("addstring(): Out of memory!");
free(new_langmap);
free(new_langstrs);
return -1;
}
memcpy(new_langstrs, langstrs, sizeof(char *) * num_strings);
memcpy(new_langmap, langmap, sizeof(int) * num_strings);
new_langstrs[num_strings] = strdup(name);
if (!new_langstrs[num_strings]) {
log("addstring(): Out of memory!");
free(new_langmap);
free(new_langstrs);
return -1;
}
new_langmap[num_strings] = num_strings;
for (i = 0; i < NUM_LANGS; i++) {
if (!is_loaded[i])
continue;
new_langtexts[i] = malloc(sizeof(char *) * (num_strings+2));
if (!new_langtexts[i]) {
log("addstring(): Out of memory!");
while (--i >= 0)
free(new_langtexts[i]);
free(new_langstrs[num_strings]);
free(new_langmap);
free(new_langstrs);
return -1;
}
memcpy(new_langtexts[i], langtexts[i],
sizeof(char *) * (num_strings+1));
if (i == DEF_LANGUAGE) {
/* Point at the \0 ending the last string in the text buffer */
new_langtexts[i][num_strings+1] =
new_langtexts[i][0]+4 + *((uint32 *)new_langtexts[i][0]) - 1;
} else {
new_langtexts[i][num_strings+1] = NULL;
}
}
free(langstrs);
langstrs = new_langstrs;
free(langmap);
langmap = new_langmap;
for (i = 0; i < NUM_LANGS; i++) {
if (is_loaded[i]) {
free(langtexts[i]);
langtexts[i] = new_langtexts[i];
}
}
return num_strings++;
}
/*************************************************************************/
/*************************************************************************/
/* Format a string in a strftime()-like way, but heed the nick group's
* language setting for month and day names and adjust the time for the
* nick group's time zone setting. The string stored in the buffer will
* always be null-terminated, even if the actual string was longer than the
* buffer size. Also note that the format parameter is a message number
* rather than a literal string, and the time parameter is a time_t, not a
* struct tm *.
* Assumption: No month or day name has a length (including trailing null)
* greater than BUFSIZE or contains the '%' character.
*/
int strftime_lang(char *buf, int size, const NickGroupInfo *ngi,
int format, time_t time)
{
int ngi_is_valid = (ngi && ngi != NICKGROUPINFO_INVALID);
int language = (ngi_is_valid && ngi->language != LANG_DEFAULT)
? ngi->language
: DEF_LANGUAGE;
char tmpbuf[BUFSIZE], buf2[BUFSIZE];
char *s;
int i, ret;
struct tm *tm;
strbcpy(tmpbuf, getstring_lang(language,format));
if (ngi_is_valid && ngi->timezone != TIMEZONE_DEFAULT) {
time += ngi->timezone*60;
tm = gmtime(&time);
/* Remove "%Z" (timezone) specifiers */
while ((s = strstr(tmpbuf, "%Z")) != NULL) {
char *end = s+2;
while (s > tmpbuf && s[-1] == ' ')
s--;
strmove(s, end);
}
} else {
tm = localtime(&time);
}
if ((s = langtexts[language][STRFTIME_DAYS_SHORT+1]) != NULL) {
for (i = 0; i < tm->tm_wday; i++)
s += strcspn(s, "\n")+1;
i = strcspn(s, "\n");
strncpy(buf2, s, i);
buf2[i] = 0;
strnrepl(tmpbuf, sizeof(tmpbuf), "%a", buf2);
}
if ((s = langtexts[language][STRFTIME_DAYS_LONG+1]) != NULL) {
for (i = 0; i < tm->tm_wday; i++)
s += strcspn(s, "\n")+1;
i = strcspn(s, "\n");
strncpy(buf2, s, i);
buf2[i] = 0;
strnrepl(tmpbuf, sizeof(tmpbuf), "%A", buf2);
}
if ((s = langtexts[language][STRFTIME_MONTHS_SHORT+1]) != NULL) {
for (i = 0; i < tm->tm_mon; i++)
s += strcspn(s, "\n")+1;
i = strcspn(s, "\n");
strncpy(buf2, s, i);
buf2[i] = 0;
strnrepl(tmpbuf, sizeof(tmpbuf), "%b", buf2);
}
if ((s = langtexts[language][STRFTIME_MONTHS_LONG+1]) != NULL) {
for (i = 0; i < tm->tm_mon; i++)
s += strcspn(s, "\n")+1;
i = strcspn(s, "\n");
strncpy(buf2, s, i);
buf2[i] = 0;
strnrepl(tmpbuf, sizeof(tmpbuf), "%B", buf2);
}
ret = strftime(buf, size, tmpbuf, tm);
if (ret >= size) // buffer overflow, should be impossible
return 0;
return ret;
}
/*************************************************************************/
/* Generates a string describing the given length of time to one unit
* (e.g. "3 days" or "10 hours"), or two units (e.g. "5 hours 25 minutes")
* if the MT_DUALUNIT flag is specified. The minimum resolution is one
* minute, unless the MT_SECONDS flag is specified; the returned time is
* rounded up if in the minimum unit, else rounded to the nearest integer.
* The returned buffer is a static buffer which will be overwritten on the
* next call to this routine.
*
* The MT_* flags (passed in the `flags' parameter) are defined in
* language.h.
*/
char *maketime(const NickGroupInfo *ngi, time_t time, int flags)
{
static char buf[BUFSIZE];
int unit;
if (time < 1) /* Enforce a minimum of one second */
time = 1;
if ((flags & MT_SECONDS) && time <= 59) {
unit = (time==1 ? STR_SECOND : STR_SECONDS);
snprintf(buf, sizeof(buf), "%ld%s", (long)time, getstring(ngi,unit));
} else if (!(flags & MT_SECONDS) && time <= 59*60) {
time = (time+59) / 60;
unit = (time==1 ? STR_MINUTE : STR_MINUTES);
snprintf(buf, sizeof(buf), "%ld%s", (long)time, getstring(ngi,unit));
} else if (flags & MT_DUALUNIT) {
time_t time2;
int unit2;
if (time <= 59*60+59) { /* 59 minutes, 59 seconds */
time2 = time % 60;
unit2 = (time2==1 ? STR_SECOND : STR_SECONDS);
time = time / 60;
unit = (time==1 ? STR_MINUTE : STR_MINUTES);
} else if (time <= (23*60+59)*60+30) { /* 23 hours, 59.5 minutes */
time = (time+30) / 60;
time2 = time % 60;
unit2 = (time2==1 ? STR_MINUTE : STR_MINUTES);
time = time / 60;
unit = (time==1 ? STR_HOUR : STR_HOURS);
} else {
time = (time+(30*60)) / (60*60);
time2 = time % 24;
unit2 = (time2==1 ? STR_HOUR : STR_HOURS);
time = time / 24;
unit = (time==1 ? STR_DAY : STR_DAYS);
}
if (time2)
snprintf(buf, sizeof(buf), "%ld%s%s%ld%s", (long)time,
getstring(ngi,unit), getstring(ngi,STR_TIMESEP),
(long)time2, getstring(ngi,unit2));
else
snprintf(buf, sizeof(buf), "%ld%s", (long)time,
getstring(ngi,unit));
} else { /* single unit */
if (time <= 59*60+30) { /* 59 min 30 sec; MT_SECONDS known true */
time = (time+30) / 60;
unit = (time==1 ? STR_MINUTE : STR_MINUTES);
} else if (time <= (23*60+30)*60) { /* 23 hours, 30 minutes */
time = (time+(30*60)) / (60*60);
unit = (time==1 ? STR_HOUR : STR_HOURS);
} else {
time = (time+(12*60*60)) / (24*60*60);
unit = (time==1 ? STR_DAY : STR_DAYS);
}
snprintf(buf, sizeof(buf), "%ld%s", (long)time, getstring(ngi,unit));
}
return buf;
}
/*************************************************************************/
/* Generates a description for the given expiration time in the form of
* days, hours, minutes, seconds and/or a combination thereof. May also
* return "does not expire" or "already expired" messages if the expiration
* time given is zero or earlier than the current time, respectively.
* String is truncated if it would exceed `size' bytes (including trailing
* null byte).
*/
void expires_in_lang(char *buf, int size, const NickGroupInfo *ngi,
time_t expires)
{
time_t seconds = expires - time(NULL);
if (expires == 0) {
strscpy(buf, getstring(ngi,EXPIRES_NONE), size);
} else if (seconds <= 0 && noexpire) {
strscpy(buf, getstring(ngi,EXPIRES_NOW), size);
} else {
if (seconds <= 0) {
/* Already expired--it will be cleared out by the next get() */
seconds = 1;
}
snprintf(buf, size, getstring(ngi,EXPIRES_IN),
maketime(ngi,seconds,MT_DUALUNIT));
}
}
/*************************************************************************/
/*************************************************************************/
/* Send a syntax-error message to the user. */
void syntax_error(const char *service, const User *u, const char *command,
int msgnum)
{
char buf[BUFSIZE];
snprintf(buf, sizeof(buf), getstring(u->ngi, msgnum), command);
notice_lang(service, u, SYNTAX_ERROR, buf);
notice_lang(service, u, MORE_INFO, service, command);
}
/*************************************************************************/
/*
* Local variables:
* c-file-style: "stroustrup"
* c-file-offsets: ((case-label . *) (statement-case-intro . *))
* indent-tabs-mode: nil
* End:
*
* vim: expandtab shiftwidth=4:
*/

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/* Include file for multi-language support.
*
* IRC Services is copyright (c) 1996-2009 Andrew Church.
* E-mail: <achurch@achurch.org>
* Parts written by Andrew Kempe and others.
* This program is free but copyrighted software; see the file GPL.txt for
* details.
*/
#ifndef LANGUAGE_H
#define LANGUAGE_H
/*************************************************************************/
/* Languages. Never insert anything in (or delete anything from) the
* middle of this list, or everybody will start getting the wrong language!
* If you want to change the order the languages are displayed in for
* NickServ HELP SET LANGUAGE, do it in language.c.
*/
#define LANG_EN_US 0 /* United States English */
#define LANG_UNUSED1 1 /* Unused; was Japanese (JIS encoding) */
#define LANG_JA_EUC 2 /* Japanese (EUC encoding) */
#define LANG_JA_SJIS 3 /* Japanese (SJIS encoding) */
#define LANG_ES 4 /* Spanish */
#define LANG_PT 5 /* Portugese */
#define LANG_FR 6 /* French */
#define LANG_TR 7 /* Turkish */
#define LANG_IT 8 /* Italian */
#define LANG_DE 9 /* German */
#define LANG_NL 10 /* Dutch */
#define LANG_HU 11 /* Hungarian */
#define LANG_RU 12 /* Russian */
#define NUM_LANGS 13 /* Number of languages */
#define LANG_DEFAULT -1 /* "Use the default" setting */
/* Sanity-check on default language value */
#if DEF_LANGUAGE < 0 || DEF_LANGUAGE >= NUM_LANGS
# error Invalid value for DEF_LANGUAGE: must be >= 0 and < NUM_LANGS
#endif
/*************************************************************************/
/* Flags for maketime() `flags' parameter. */
#define MT_DUALUNIT 0x0001 /* Allow two units (e.g. X hours Y mins) */
#define MT_SECONDS 0x0002 /* Allow seconds (default minutes only) */
/*************************************************************************/
/* External symbol declarations (see language.c for documentation). */
extern int langlist[NUM_LANGS+1];
extern int lang_init(void);
extern void lang_cleanup(void);
extern int load_ext_lang(const char *filename);
extern void reset_ext_lang(void);
extern int lookup_language(const char *name);
extern int have_language(int language);
extern int lookup_string(const char *name);
extern const char *getstring(const NickGroupInfo *ngi, int index);
extern const char *getstring_lang(int language, int index);
extern int setstring(int language, int index, const char *text);
extern int mapstring(int old, int new);
extern int addstring(const char *name);
extern int strftime_lang(char *buf, int size, const NickGroupInfo *ngi,
int format, time_t time);
extern char *maketime(const NickGroupInfo *ngi, time_t time, int flags);
extern void expires_in_lang(char *buf, int size, const NickGroupInfo *ngi,
time_t seconds);
extern void syntax_error(const char *service, const User *u,
const char *command, int msgnum);
/*************************************************************************/
/* Definitions of language string constants. */
#include "langstrs.h"
/*************************************************************************/
#endif /* LANGUAGE_H */
/*
* Local variables:
* c-file-style: "stroustrup"
* c-file-offsets: ((case-label . *) (statement-case-intro . *))
* indent-tabs-mode: nil
* End:
*
* vim: expandtab shiftwidth=4:
*/

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/* Macros to handle insertion, deletion, iteration, and searching for
* linked lists and arrays.
*
* IRC Services is copyright (c) 1996-2009 Andrew Church.
* E-mail: <achurch@achurch.org>
* Parts written by Andrew Kempe and others.
* This program is free but copyrighted software; see the file GPL.txt for
* details.
*/
#ifndef LIST_ARRAY_H
#define LIST_ARRAY_H
/*************************************************************************/
/* Comments on the efficiency of lists vs. arrays:
*
* Lists are simple to insert into and remove from, but searching can be
* inefficient, as the list must be walked through each time. Arrays can
* be searched quickly, particularly if the list is sorted (note that the
* macros below do not support sorted arrays), but insertion and removal
* are expensive, requiring data to be moved around in memory if the
* element to be inserted or removed is not last in the array or if
* reallocation of the array results in a different array pointer. Lists
* also have the advantage that the list can be easily modified (items
* inserted or deleted) within a FOREACH loop, while arrays require extra
* logic to modify the counter variable after an insert or delete.
*
* As far as searching goes, arrays do not show a significant improvement
* until the data set size reaches around 15 elements, at which point the
* reduced number of memory accesses (and reduced cache pressure,
* particularly with large data sets) gives arrays a clear advantage. The
* following results were obtained from running the test program below on a
* Celeron 1.7GHz system (compiled with gcc-4.1 -O3):
*
* | Time/search (ns)
* Size | List | Array
* -----+-------------------
* 3 | 4.1 | 3.7
* 5 | 7.3 | 6.7
* 7 | 9.7 | 9.3
* 10 | 14.5 | 12.3
* 15 | 23.6 | 18.2
* 20 | 53.5 | 21.7
* 30 | 73.2 | 44.8
* 50 | 109 | 56.7
* 100 | 200 | 101
* 300 | 564 | 267
* 1000 | 4530 | 864
* 3000 | 13740 | 4440
*
* Test program (outputs average time per trial):
*
#include <stdio.h>
#include <stdlib.h>
#include <sys/time.h>
#include <sys/resource.h>
int main(int ac, char **av)
{
int size = atoi(av[1]), runs = atoi(av[2]), trials = ac>3?atoi(av[3]):1;
struct p_s {struct p_s *next; int a,b; } *p, *p2;
struct { int a,b; } *q;
int i, j, t;
struct rusage ru1, ru2, ru3, ru4;
int list = 0, array = 0;
p = p2 = malloc(sizeof(*p));
q = malloc(sizeof(*q) * size);
for (i = 0; i < size; i++) {
p2->b = q[i].b = i;
p2 = (p2->next = malloc(sizeof(*p2)));
}
for (t = 0; t < trials+1; t++) {
for (p2 = p; p2->b != size-1; p2 = p2->next)
;
getrusage(RUSAGE_SELF, &ru1);
for (i = 0; i < runs; i++)
for (p2 = p; p2->b != size-1; p2 = p2->next)
;
getrusage(RUSAGE_SELF, &ru2);
for (j = 0; q[j].b != size-1; j++)
;
getrusage(RUSAGE_SELF, &ru3);
for (i = 0; i < runs; i++)
for (j = 0; q[j].b != size-1; j++)
;
getrusage(RUSAGE_SELF, &ru4);
#define TIME(ru) ((ru).ru_utime.tv_sec*1000 + (ru).ru_utime.tv_usec/1000)
if (t > 0) { // skip first trial for cache loading
list += TIME(ru2) - TIME(ru1);
array += TIME(ru4) - TIME(ru3);
}
}
printf("List : %d ms\nArray: %d ms\n",
(list*2+trials)/(trials*2), (array*2+trials)/(trials*2));
return 0;
}
*/
/*************************************************************************/
/*************************************************************************/
/* Remove anything defined by system headers. */
#undef LIST_INSERT
#undef LIST_INSERT_ORDERED
#undef LIST_REMOVE
#undef LIST_FOREACH
#undef LIST_FOREACH_SAFE
#undef LIST_SEARCH
#undef LIST_SEARCH_SCALAR
#undef LIST_SEARCH_ORDERED
#undef LIST_SEARCH_ORDERED_SCALAR
#undef ARRAY2_EXTEND
#undef ARRAY2_INSERT
#undef ARRAY2_REMOVE
#undef ARRAY2_FOREACH
#undef ARRAY2_SEARCH
#undef ARRAY2_SEARCH_SCALAR
#undef ARRAY2_SEARCH_PLAIN_SCALAR
#undef ARRAY_EXTEND
#undef ARRAY_INSERT
#undef ARRAY_REMOVE
#undef ARRAY_FOREACH
#undef ARRAY_SEARCH
#undef ARRAY_SEARCH_SCALAR
#undef ARRAY_SEARCH_PLAIN_SCALAR
/*************************************************************************/
/*************************************************************************/
/* List macros. In these macros, `list' must be an lvalue (with no side
* effects) of the same type as the nodes in the list. */
/*************************************************************************/
/* Insert `node' into the beginning of `list'. Insertion is performed in
* constant time. */
#define LIST_INSERT(node_,list) \
do { \
typeof(list) _node = (node_); \
_node->next = (list); \
_node->prev = NULL; \
if (list) \
(list)->prev = _node; \
(list) = _node; \
} while (0)
/*************************************************************************/
/* Append `node' to the end of `list'. Insertion is performed in linear
* time with the length of the list. */
#define LIST_APPEND(node_,list) \
do { \
typeof(list) _node = (node_); \
typeof(_node) *_nextptr = &(list); \
typeof(_node) _prev = NULL; \
while (*_nextptr) { \
_prev = *_nextptr; \
_nextptr = &((*_nextptr)->next); \
} \
*_nextptr = _node; \
_node->prev = _prev; \
_node->next = NULL; \
} while (0)
/*************************************************************************/
/* Insert `node' into `list' so that `list' maintains its order as
* determined by the function `compare' called on the field `field' of each
* node. `field' must be a field of `node', and `compare' must be a
* function that takes two `field' values and returns -1, 0, or 1
* indicating whether the first argument is ordered before, equal to, or
* after the second (strcmp(), for example). If an equal node is found,
* `node' is inserted after it. Insertion is performed in linear time
* with the length of the list. */
#define LIST_INSERT_ORDERED(node_,list,compare,field) \
do { \
typeof(list) _node = (node_); \
typeof(_node) _ptr, _prev; \
for (_ptr = (list), _prev = NULL; _ptr; \
_prev = _ptr, _ptr = _ptr->next \
) { \
if (compare(_node->field, _ptr->field) < 0) \
break; \
} \
_node->next = _ptr; \
_node->prev = _prev; \
if (_ptr) \
_ptr->prev = _node; \
if (_prev) \
_prev->next = _node; \
else \
(list) = _node; \
} while (0)
/*************************************************************************/
/* Remove `node' from `list'. Removal is performed in constant time. */
#define LIST_REMOVE(node_,list) \
do { \
typeof(list) _node = (node_); \
if (_node->next) \
_node->next->prev = _node->prev; \
if (_node->prev) \
_node->prev->next = _node->next; \
else \
(list) = _node->next; \
} while (0)
/*************************************************************************/
/* Iterate over every element in `list', using `iter' as the iterator. The
* macro has the same properties as a for() loop. `iter' must be an
* lvalue. */
#define LIST_FOREACH(iter,list) \
for ((iter) = (list); (iter); (iter) = (iter)->next)
/*************************************************************************/
/* Iterate over `list' using an extra variable (`temp') to hold the next
* element, ensuring proper operation even when the current element is
* deleted. `iter' and `temp' must be lvalues. */
#define LIST_FOREACH_SAFE(iter,list,temp) \
for ((iter) = (list); (iter) && (temp = (iter)->next, 1); (iter) = temp)
/*************************************************************************/
/* Search `list' for a node with `field' equal to `target' (as evaluated by
* `compare') and place a pointer to the node found, or NULL if no node is
* found, in `result'. `field' must be a field of the nodes in `list';
* `target' must be an expression of the type of `field' with no side
* effects; `result' must be an lvalue; and `compare' must be a
* strcmp()-like function (see LIST_INSERT_ORDERED). The search is
* performed in linear time, disregarding the comparison function. */
#define LIST_SEARCH(list,field,target,compare,result) \
do { \
LIST_FOREACH ((result), (list)) { \
if (compare((result)->field, (target)) == 0)\
break; \
} \
} while (0)
/*************************************************************************/
/* Search `list' as LIST_SEARCH does, but for a scalar value. The search
* is performed in linear time. */
#define LIST_SEARCH_SCALAR(list,field,target,result) \
do { \
LIST_FOREACH ((result), (list)) { \
if ((result)->field == (target)) \
break; \
} \
} while (0)
/*************************************************************************/
/* Search `list' as LIST_SEARCH does, but for a list known to be ordered.
* The search is performed in linear time, disregarding the comparison
* function. */
#define LIST_SEARCH_ORDERED(list,field,target,compare,result) \
do { \
LIST_FOREACH ((result), (list)) { \
int i = compare((result)->field, (target)); \
if (i > 0) \
(result) = NULL; \
if (i >= 0) \
break; \
} \
} while (0)
/*************************************************************************/
/* Search `list' as LIST_SEARCH_ORDERED does, but for a scalar value. The
* search is performed in linear time. */
#define LIST_SEARCH_ORDERED_SCALAR(list,field,target,result) \
do { \
LIST_FOREACH ((result), (list)) { \
int i = (result)->field - (target); \
if (i > 0) \
(result) = NULL; \
if (i >= 0) \
break; \
} \
} while (0)
/*************************************************************************/
/*************************************************************************/
/* Array macros. In these macros, `array' and `size' must be lvalues with
* no side effects; `array' is a pointer to the elements of the array, and
* `size' is the current size (length) of the array. */
/*************************************************************************/
/* Extend a variable-length array by one entry. Execution time is no
* greater than linear with the length of the array. */
#define ARRAY2_EXTEND(array,size) \
do { \
(size)++; \
(array) = srealloc((array), sizeof(*(array)) * (size)); \
} while (0)
/*************************************************************************/
/* Insert a slot at position `index' in a variable-length array.
* Execution time is linear with the length of the array. */
#define ARRAY2_INSERT(array,size,index_) \
do { \
unsigned int _index = (index_); \
(size)++; \
(array) = srealloc((array), sizeof(*(array)) * (size)); \
if (_index < (size)-1) \
memmove(&(array)[_index+1], &(array)[_index], \
sizeof(*(array)) * (((size)-1)-_index)); \
} while (0)
/*************************************************************************/
/* Delete entry number `index' from a variable-length array. Execution
* time is linear with the length of the array. */
#define ARRAY2_REMOVE(array,size,index_) \
do { \
unsigned int _index = (index_); \
(size)--; \
if (_index < (size)) \
memmove(&(array)[_index], &(array)[_index]+1, \
sizeof(*(array)) * ((size)-_index)); \
(array) = srealloc((array), sizeof(*(array)) * (size)); \
} while (0)
/*************************************************************************/
/* Iterate over every element in a variable-length array. */
#define ARRAY2_FOREACH(iter,array,size) \
for ((iter) = 0; (iter) < (size); (iter)++)
/*************************************************************************/
/* Search a variable-length array for a value. Operates like LIST_SEARCH.
* `result' must be an integer lvalue. If nothing is found, `result' will
* be set equal to `size'. The search is performed in linear time,
* disregarding the comparison function. */
#define ARRAY2_SEARCH(array,size,field,target,compare,result) \
do { \
ARRAY2_FOREACH ((result), (array), (size)) { \
if (compare((array)[(result)].field, (target)) == 0)\
break; \
} \
} while (0)
/*************************************************************************/
/* Search a variable-length array for a value, when the array elements do
* not have fields. The search is performed in linear time, disregarding
* the comparison function. */
#define ARRAY2_SEARCH_PLAIN(array,size,target,compare,result) \
do { \
ARRAY2_FOREACH ((result), (array), (size)) { \
if (compare((array)[(result)], (target)) == 0) \
break; \
} \
} while (0)
/*************************************************************************/
/* Search a variable-length array for a scalar value. The search is
* performed in linear time. */
#define ARRAY2_SEARCH_SCALAR(array,size,field,target,result) \
do { \
ARRAY2_FOREACH ((result), (array), (size)) { \
if ((array)[(result)].field == (target)) \
break; \
} \
} while (0)
/*************************************************************************/
/* Search a variable-length array for a scalar value, when the array
* elements do not have fields. The search is performed in linear time. */
#define ARRAY2_SEARCH_PLAIN_SCALAR(array,size,target,result) \
do { \
ARRAY2_FOREACH ((result), (array), (size)) { \
if ((array)[(result)] == (target)) \
break; \
} \
} while (0)
/*************************************************************************/
/*************************************************************************/
/* Perform the ARRAY2_* actions on an array `array' whose size is stored in
* `array_count'. */
#define ARRAY_EXTEND(array) ARRAY2_EXTEND(array,array##_count)
#define ARRAY_INSERT(array,index) ARRAY2_INSERT(array,array##_count,index)
#define ARRAY_REMOVE(array,index) ARRAY2_REMOVE(array,array##_count,index)
#define ARRAY_FOREACH(iter,array) ARRAY2_FOREACH(iter,array,array##_count)
#define ARRAY_SEARCH(array,field,target,compare,result) \
ARRAY2_SEARCH(array,array##_count,field,target,compare,result)
#define ARRAY_SEARCH_PLAIN(array,target,compare,result) \
ARRAY2_SEARCH_PLAIN(array,array##_count,target,compare,result)
#define ARRAY_SEARCH_SCALAR(array,field,target,result) \
ARRAY2_SEARCH_SCALAR(array,array##_count,field,target,result)
#define ARRAY_SEARCH_PLAIN_SCALAR(array,target,result) \
ARRAY2_SEARCH_PLAIN_SCALAR(array,array##_count,target,result)
/*************************************************************************/
/*************************************************************************/
#endif /* LIST_ARRAY_H */
/*
* Local variables:
* c-file-style: "stroustrup"
* c-file-offsets: ((case-label . *) (statement-case-intro . *))
* indent-tabs-mode: nil
* End:
*
* vim: expandtab shiftwidth=4:
*/

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/* Logging routines.
*
* IRC Services is copyright (c) 1996-2009 Andrew Church.
* E-mail: <achurch@achurch.org>
* Parts written by Andrew Kempe and others.
* This program is free but copyrighted software; see the file GPL.txt for
* details.
*/
#include "services.h"
#include <netdb.h> /* for hstrerror() */
/* Pattern for generating logfile names */
static char logfile_pattern[PATH_MAX+1];
/* Currently open log file */
static FILE *logfile;
static char current_filename[PATH_MAX+1];
/* Memory log buffer (see open_memory_log()) */
static char logmem[LOGMEMSIZE];
static char *logmemptr = NULL;
/* Are we in fatal() or fatal_perror()? (This is used to avoid infinite
* recursion if wallops() does a fatal().) */
static int in_fatal = 0;
/*************************************************************************/
/*************************************************************************/
/* Local routine to generate a filename from a filename pattern (possibly
* containing %y/%m/%d for year/month/day). Result is returned in a static
* buffer, and will not be longer than PATH_MAX characters.
*/
static char *gen_log_filename(void)
{
static char result[PATH_MAX+1];
const char *s, *from;
char *to;
time_t now = time(NULL);
struct tm *tm = localtime(&now);
tm->tm_year += 1900;
tm->tm_mon++;
from = LogFilename;
if (!*from) {
*result = 0;
return result;
}
to = result;
while ((s = strchr(from, '%')) != NULL) {
to += snprintf(to, sizeof(result)-(to-result), "%.*s", s-from, from);
s++;
switch (*s) {
case 'y':
to += snprintf(to, sizeof(result)-(to-result), "%d", tm->tm_year);
break;
case 'm':
to += snprintf(to, sizeof(result)-(to-result), "%02d", tm->tm_mon);
break;
case 'd':
to += snprintf(to, sizeof(result)-(to-result), "%02d",tm->tm_mday);
break;
default:
if (to-result < sizeof(result)-1)
*to++ = *s;
break;
}
from = s+1;
}
to += snprintf(to, sizeof(result)-(to-result), "%s", from);
*to = 0;
return result;
}
/*************************************************************************/
/* Local routine to check whether the log file needs to be rotated, and
* rotate it if so. Assumes the log file is already open.
*/
static void check_log_rotate(void)
{
char *newname = gen_log_filename();
if (strlen(newname) > sizeof(current_filename)-1)
newname[sizeof(current_filename)-1] = 0;
if (strcmp(current_filename, gen_log_filename()) != 0) {
if (!reopen_log())
log("Warning: Unable to rotate log file: %s", strerror(errno));
}
}
/*************************************************************************/
/*************************************************************************/
/* Local routines to write text to the log file and/or stderr as needed. */
static void vlogprintf(const char *fmt, va_list args)
{
if (nofork) {
va_list args_copy;
va_copy(args_copy, args);
vfprintf(stderr, fmt, args_copy);
va_end(args_copy);
}
if (logfile) {
vfprintf(logfile, fmt, args);
} else if (logmemptr) {
char tmpbuf[BUFSIZE];
int len = vsnprintf(tmpbuf, sizeof(tmpbuf), fmt, args);
if (len > LOGMEMSIZE - (logmemptr-logmem)) {
int oldlen = len;
len = LOGMEMSIZE - (logmemptr-logmem);
if (len > 0) {
if (tmpbuf[oldlen-1] == '\n') {
tmpbuf[len-1] = '\n'; /* always end with a newline */
} else {
len--;
}
}
}
if (len > 0) {
memcpy(logmemptr, tmpbuf, len);
logmemptr += len;
}
}
}
static void logprintf(const char *fmt, ...) FORMAT(printf,1,2);
static void logprintf(const char *fmt, ...)
{
va_list args;
va_start(args, fmt);
vlogprintf(fmt, args);
va_end(args);
}
static void logputs(const char *str)
{
logprintf("%s", str);
}
/*************************************************************************/
/* Local routine to write the time of day to the log. */
static void write_time(void)
{
time_t t;
struct tm tm;
char buf[256];
time(&t);
tm = *localtime(&t);
#if HAVE_GETTIMEOFDAY
if (debug) {
char *s;
struct timeval tv;
gettimeofday(&tv, NULL);
strftime(buf, sizeof(buf)-1, "[%b %d %H:%M:%S", &tm);
s = buf + strlen(buf);
s += snprintf(s, sizeof(buf)-(s-buf), ".%06d", (int)tv.tv_usec);
strftime(s, sizeof(buf)-(s-buf)-1, " %Y] ", &tm);
} else {
#endif
strftime(buf, sizeof(buf)-1, "[%b %d %H:%M:%S %Y] ", &tm);
#if HAVE_GETTIMEOFDAY
}
#endif
logputs(buf);
}
/*************************************************************************/
/*************************************************************************/
/* Set the filename pattern to use for generating the log filename. */
void set_logfile(const char *pattern)
{
if (pattern) { /* Just to be safe */
strscpy(logfile_pattern, pattern, sizeof(logfile_pattern));
}
}
/*************************************************************************/
/* Open the log file. Return zero if the log file could not be opened,
* else return nonzero (success).
*/
int open_log(void)
{
if (logfile)
return 1;
strbcpy(current_filename, gen_log_filename());
logfile = fopen(current_filename, "a");
if (logfile) {
setbuf(logfile, NULL);
if (logmemptr) {
int res, errno_save;
if (logmemptr > logmem) {
res = fwrite(logmem, logmemptr-logmem, 1, logfile);
errno_save = errno;
} else {
res = 1; /* i.e. no error */
#if CLEAN_COMPILE
errno_save = 0; /* warning killer for dumb compilers */
#endif
}
logmemptr = NULL;
if (res != 1) {
/* make sure this is AFTER the memory log has been closed! */
errno = errno_save;
log_perror("open_log(): error writing memory log");
}
}
}
return logfile!=NULL ? 1 : 0;
}
/*************************************************************************/
/* Open a virtual log file in memory. The contents of the memory log file
* will be written to a physical log file when open_log() is called and
* executes successfully. If a physical log file is already open, does
* nothing. Always succeeds (and returns nonzero).
*/
int open_memory_log(void)
{
if (logfile || logmemptr)
return 1;
logmemptr = logmem;
return 1;
}
/*************************************************************************/
/* Close the log file. */
void close_log(void)
{
if (logmemptr) {
logmemptr = NULL;
}
if (logfile) {
fclose(logfile);
logfile = NULL;
}
}
/*************************************************************************/
/* Reopen the log file with the current value of LogFilename (for use when
* rehashing configuration files or rotating the log file). Return value
* is like open_log().
*/
int reopen_log(void)
{
char *newname;
FILE *f;
newname = gen_log_filename();
/* Make sure it will fit in current_filename later */
if (strlen(newname) > sizeof(current_filename)-1)
newname[sizeof(current_filename)-1] = 0;
f = fopen(newname, "a");
if (!f)
return 0;
setbuf(f, NULL);
if (logfile)
fclose(logfile);
logfile = f;
strcpy(current_filename, newname); /* safe b/c of length check above */
return 1;
}
/*************************************************************************/
/* Return nonzero if the log file is currently open, zero if closed. */
int log_is_open(void)
{
return logfile != NULL;
}
/*************************************************************************/
/*************************************************************************/
/* Log stuff to the log file with a datestamp when debug >= debuglevel.
* errno is preserved. If debuglevel is greater than zero, "debug: " is
* prefixed to the message. If do_perror is nonzero, the message is
* followed by a ": " and system error message, a la perror() (if errno<0,
* it is treated as an herror value from hostname resolution). If
* modulename is not NULL, it is used as a prefix to the error message.
*
* [module_]log[_perror][_debug]() are implemented as macros which call
* this function.
*/
void do_log(int debuglevel, int do_perror, const char *modulename,
const char *fmt, ...)
{
if (debug >= debuglevel) {
va_list args;
int errno_save = errno;
va_start(args, fmt);
if (logfile)
check_log_rotate();
write_time();
if (debuglevel > 0)
logputs("debug: ");
if (modulename)
logprintf("(%s) ", modulename);
vlogprintf(fmt, args);
if (do_perror) {
logprintf(": %s",
(errno_save<0) ? hstrerror(-errno_save)
: strerror(errno_save));
}
logputs("\n");
va_end(args);
errno = errno_save;
}
}
/*************************************************************************/
/*************************************************************************/
/* We've hit something we can't recover from. Let people know what
* happened, then go down.
*/
void fatal(const char *fmt, ...)
{
va_list args;
char buf[4096];
if (in_fatal)
exit(2);
in_fatal++;
va_start(args, fmt);
vsnprintf(buf, sizeof(buf), fmt, args);
va_end(args);
if (logfile)
check_log_rotate();
write_time();
logprintf("FATAL: %s\n", buf);
if (servsock && sock_isconn(servsock))
wallops(NULL, "FATAL ERROR! %s", buf);
exit(1);
}
/*************************************************************************/
/* Same thing, but do it like perror(). */
void fatal_perror(const char *fmt, ...)
{
va_list args;
char buf[4096];
const char *errstr;
if (in_fatal)
exit(2);
in_fatal++;
errstr = (errno<0) ? hstrerror(-errno) : strerror(errno);
va_start(args, fmt);
vsnprintf(buf, sizeof(buf), fmt, args);
va_end(args);
if (logfile)
check_log_rotate();
write_time();
logprintf("FATAL: %s: %s\n", buf, errstr);
if (servsock && sock_isconn(servsock))
wallops(NULL, "FATAL ERROR! %s: %s", buf, errstr);
exit(1);
}
/*************************************************************************/
/*
* Local variables:
* c-file-style: "stroustrup"
* c-file-offsets: ((case-label . *) (statement-case-intro . *))
* indent-tabs-mode: nil
* End:
*
* vim: expandtab shiftwidth=4:
*/

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/* Definitions and prototypes related to logging.
*
* IRC Services is copyright (c) 1996-2009 Andrew Church.
* E-mail: <achurch@achurch.org>
* Parts written by Andrew Kempe and others.
* This program is free but copyrighted software; see the file GPL.txt for
* details.
*/
#ifndef LOG_H
#define LOG_H
extern void set_logfile(const char *pattern);
extern int open_log(void);
extern int open_memory_log(void);
extern void close_log(void);
extern int reopen_log(void);
extern int log_is_open(void);
extern void do_log(int debuglevel, int do_perror, const char *modulename,
const char *fmt, ...)
FORMAT(printf,4,5);
extern void fatal(const char *fmt, ...)
FORMAT(printf,1,2);
extern void fatal_perror(const char *fmt, ...)
FORMAT(printf,1,2);
#undef log /* in case system includes #define it */
#define log(fmt,...) \
log_debug(0, fmt , ##__VA_ARGS__)
#define log_perror(fmt,...) \
log_perror_debug(0, fmt , ##__VA_ARGS__)
#define log_debug(debuglevel,fmt,...) \
do_log(debuglevel, 0, NULL, fmt, ##__VA_ARGS__)
#define log_perror_debug(debuglevel,fmt,...) \
do_log(debuglevel, 1, NULL, fmt, ##__VA_ARGS__)
#define module_log(fmt,...) \
module_log_debug(0, fmt , ##__VA_ARGS__)
#define module_log_perror(fmt,...) \
module_log_perror_debug(0, fmt , ##__VA_ARGS__)
#define module_log_debug(debuglevel,fmt,...) \
do_log(debuglevel, 0, MODULE_NAME, fmt, ##__VA_ARGS__)
#define module_log_perror_debug(debuglevel,fmt,...) \
do_log(debuglevel, 1, MODULE_NAME, fmt, ##__VA_ARGS__)
#endif /* LOG_H */
/*
* Local variables:
* c-file-style: "stroustrup"
* c-file-offsets: ((case-label . *) (statement-case-intro . *))
* indent-tabs-mode: nil
* End:
*
* vim: expandtab shiftwidth=4:
*/

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/* IRC Services -- main source file.
* Copyright (c) 1996-2009 Andrew Church <achurch@achurch.org>
* Parts written by Andrew Kempe and others.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
/*************************************************************************/
#include "services.h"
#include "databases.h"
#include "modules.h"
#include "timeout.h"
#include <fcntl.h>
#include <setjmp.h>
/* Hack for sigsetjmp(); since (at least with glibc, and it shouldn't hurt
* anywhere else) sigsetjmp() only works if you don't leave the stack frame
* it was called from, we have to call it before calling the signals.c
* wrapper. */
#define DO_SIGSETJMP() do { \
static sigjmp_buf buf; \
if (!sigsetjmp(buf, 1)) \
do_sigsetjmp(&buf); \
} while (0)
/******** Global variables! ********/
/* Command-line options: (note that configuration variables are in init.c) */
const char *services_dir = SERVICES_DIR;/* -dir=dirname */
int debug = 0; /* -debug */
int readonly = 0; /* -readonly */
int nofork = 0; /* -nofork */
int noexpire = 0; /* -noexpire */
int noakill = 0; /* -noakill */
int forceload = 0; /* -forceload */
int encrypt_all = 0; /* -encrypt-all */
/* Set to 1 while we are linked to the network */
int linked = 0;
/* Set to 1 if we are to quit */
int quitting = 0;
/* Set to 1 if we are to quit after saving databases */
int delayed_quit = 0;
/* Set to 1 if we are to restart */
int restart = 0;
/* Contains a message as to why services is terminating */
char quitmsg[BUFSIZE] = "";
/* Input buffer - global, so we can dump it if something goes wrong */
char inbuf[BUFSIZE];
/* Socket for talking to server */
Socket *servsock = NULL;
/* Should we update the databases now? */
int save_data = 0;
/* At what time were we started? */
time_t start_time;
/* Were we unable to open the log? (and the error that occurred) */
int openlog_failed, openlog_errno;
/* Module callbacks (global so init.c can set them): */
int cb_connect = -1;
int cb_save_complete = -1;
/*************************************************************************/
/*************************************************************************/
/* Callbacks for uplink IRC server socket. */
/*************************************************************************/
/* Actions to perform when connection to server completes. */
void connect_callback(Socket *s, void *param_unused)
{
sock_set_blocking(s, 1);
sock_setcb(s, SCB_READLINE, readfirstline_callback);
send_server();
}
/*************************************************************************/
/* Actions to perform when connection to server is broken. */
void disconnect_callback(Socket *s, void *param)
{
/* We are no longer linked */
linked = 0;
if (param == DISCONN_REMOTE || param == DISCONN_CONNFAIL) {
int errno_save = errno;
const char *msg = (param==DISCONN_REMOTE ? "Read error from server"
: "Connection to server failed");
snprintf(quitmsg, sizeof(quitmsg),
"%s: %s", msg, strerror(errno_save));
if (param == DISCONN_REMOTE) {
/* If we were already connected, make sure any changed data is
* updated before we terminate. */
delayed_quit = 1;
save_data = 1;
} else {
/* The connection was never made in the first place, so we
* discard any changes (such as expirations) made on the
* assumption that either a configuration problem or other
* external problem exists. Such changes will be saved the
* next time Services successfully connects to a server. */
quitting = 1;
}
}
sock_setcb(s, SCB_READLINE, NULL);
}
/*************************************************************************/
/* Actions to perform when first line is read from socket. */
void readfirstline_callback(Socket *s, void *param_unused)
{
sock_setcb(s, SCB_READLINE, readline_callback);
if (!sgets2(inbuf, sizeof(inbuf), s)) {
/* This shouldn't happen, but just in case... */
disconn(s);
fatal("Unable to read greeting from server socket");
}
if (strnicmp(inbuf, "ERROR", 5) == 0) {
/* Close server socket first to stop wallops, since the other
* server doesn't want to listen to us anyway */
disconn(s);
fatal("Remote server returned: %s", inbuf);
}
/* We're now linked to the network */
linked = 1;
/* Announce a logfile error if there was one */
if (openlog_failed) {
wallops(NULL, "Warning: couldn't open logfile: %s",
strerror(openlog_errno));
openlog_failed = 0;
}
/* Bring in our pseudo-clients */
introduce_user(NULL);
/* Let modules do their startup stuff */
call_callback(cb_connect);
/* Process the line we read in above */
process();
}
/*************************************************************************/
/* Actions to perform when subsequent lines are read from socket. */
void readline_callback(Socket *s, void *param_unused)
{
if (sgets2(inbuf, sizeof(inbuf), s))
process();
}
/*************************************************************************/
/*************************************************************************/
/* Lock the data directory if possible; return nonzero on success, zero on
* failure (data directory already locked or cannot create lock file).
* On failure, errno will be EEXIST if the directory was already locked or
* a value other than EEXIST if an error occurred creating the lock file.
*
* This does not attempt to correct for NFS brokenness w.r.t. O_EXCL and
* will contain a race condition when used on an NFS filesystem (or any
* other filesystem which does not support O_EXCL properly).
*/
int lock_data(void)
{
int fd;
errno = 0;
fd = open(LockFilename, O_WRONLY | O_CREAT | O_EXCL, 0);
if (fd >= 0) {
close(fd);
return 1;
}
return 0;
}
/*************************************************************************/
/* Check whether the data directory is locked without actually attempting
* to lock it. Returns 1 if locked, 0 if not, or -1 if an error occurred
* while trying to check (in which case errno will be set to an appropriate
* value, i.e. whatever access() returned).
*/
int is_data_locked(void)
{
errno = 0;
if (access(LockFilename, F_OK) == 0)
return 1;
if (errno == ENOENT)
return 0;
return -1;
}
/*************************************************************************/
/* Unlock the data directory. Assumes we locked it in the first place.
* Returns 1 on success, 0 on failure (unable to remove the lock file), or
* -1 if the lock file didn't exist in the first place (possibly because it
* was removed by another (misbehaving) program).
*/
int unlock_data(void)
{
errno = 0;
if (unlink(LockFilename) == 0)
return 1;
if (errno == ENOENT)
return -1;
return 0;
}
/*************************************************************************/
/* Subroutine to save databases. */
void save_data_now(void)
{
if (!lock_data()) {
if (errno == EEXIST) {
log("warning: databases are locked, not updating");
wallops(NULL,
"\2Warning:\2 Databases are locked, and cannot be updated."
" Remove the `%s%s%s' file to allow database updates.",
*LockFilename=='/' ? "" : services_dir,
*LockFilename=='/' ? "" : "/", LockFilename);
} else {
log_perror("warning: unable to lock databases, not updating");
wallops(NULL, "\2Warning:\2 Unable to lock databases; databases"
" will not be updated.");
}
call_callback_1(cb_save_complete, 0);
} else {
log_debug(1, "Saving databases");
save_all_dbtables();
if (!unlock_data()) {
log_perror("warning: unable to unlock databases");
wallops(NULL,
"\2Warning:\2 Unable to unlock databases; future database"
" updates may fail until the `%s%s%s' file is removed.",
*LockFilename=='/' ? "" : services_dir,
*LockFilename=='/' ? "" : "/", LockFilename);
}
call_callback_1(cb_save_complete, 1);
}
}
/*************************************************************************/
/*************************************************************************/
/* Main routine. (What does it look like? :-) ) */
int main(int ac, char **av, char **envp)
{
volatile time_t last_update; /* When did we last update the databases? */
volatile uint32 last_check; /* When did we last check timeouts? */
/*** Initialization stuff. ***/
if (init(ac, av) < 0) {
fprintf(stderr, "Initialization failed, exiting.\n");
return 1;
}
/* Set up timers. */
last_send = time(NULL);
last_update = time(NULL);
last_check = time(NULL);
/* The signal handler routine will drop back here with quitting != 0
* if it gets called. */
DO_SIGSETJMP();
/*** Main loop. ***/
while (!quitting) {
time_t now = time(NULL);
int32 now_msec = time_msec();
log_debug(2, "Top of main loop");
if (!readonly && (save_data || now-last_update >= UpdateTimeout)) {
save_data_now();
save_data = 0;
last_update = now;
}
if (delayed_quit)
break;
if (sock_isconn(servsock)) {
if (PingFrequency && now - last_send >= PingFrequency)
send_cmd(NULL, "PING :%s", ServerName);
}
if (now_msec - last_check >= TimeoutCheck) {
check_timeouts();
last_check = now_msec;
}
check_sockets();
if (!MergeChannelModes)
set_cmode(NULL, NULL); /* flush out any mode changes made */
}
/*** Cleanup stuff. ***/
cleanup();
/* Check for restart instead of exit */
if (restart) {
execve(SERVICES_BIN, av, envp);
/* If we get here, the exec() failed; override readonly and write a
* note to the log file */
{
int errno_save = errno;
open_log();
errno = errno_save;
}
log_perror("Restart failed");
close_log();
return 1;
}
/* Terminate program */
return 0;
}
/*************************************************************************/
/*
* Local variables:
* c-file-style: "stroustrup"
* c-file-offsets: ((case-label . *) (statement-case-intro . *))
* indent-tabs-mode: nil
* End:
*
* vim: expandtab shiftwidth=4:
*/

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/* Memory management routines.
* Leak checking based on code by Kelmar (2001/1/13).
*
* IRC Services is copyright (c) 1996-2009 Andrew Church.
* E-mail: <achurch@achurch.org>
* Parts written by Andrew Kempe and others.
* This program is free but copyrighted software; see the file GPL.txt for
* details.
*/
#define NO_MEMREDEF
#include "services.h"
/*************************************************************************/
/*************************************************************************/
/* smalloc, scalloc, srealloc, sstrdup:
* Versions of the memory allocation functions which will cause the
* program to terminate with an "Out of memory" error if the memory
* cannot be allocated. (Hence, the return value from these functions
* is never NULL, except for smalloc()/scalloc() called with a size of
* zero.)
*/
#if MEMCHECKS
# define FILELINE , const char *file, int line
# define xmalloc(a) MCmalloc(a,file,line)
# define xsmalloc(a) smalloc(a,file,line)
# define xcalloc(a,b) MCcalloc(a,b,file,line)
# define xrealloc(a,b) MCrealloc(a,b,file,line)
# define xfree(a) MCfree(a,file,line)
#else
# define FILELINE /*nothing*/
# define xmalloc(a) malloc(a)
# define xsmalloc(a) smalloc(a)
# define xcalloc(a,b) calloc(a,b)
# define xrealloc(a,b) realloc(a,b)
# define xfree(a) free(a)
#endif
/*************************************************************************/
void *smalloc(long size FILELINE)
{
void *buf;
if (size == 0)
return NULL;
buf = xmalloc(size);
if (buf == NULL)
raise(SIGUSR1);
return buf;
}
/*************************************************************************/
void *scalloc(long els, long elsize FILELINE)
{
void *buf;
if (elsize == 0 || els == 0)
return NULL;
buf = xcalloc(elsize, els);
if (buf == NULL)
raise(SIGUSR1);
return buf;
}
/*************************************************************************/
void *srealloc(void *oldptr, long newsize FILELINE)
{
void *buf;
if (newsize == 0) {
xfree(oldptr);
return NULL;
}
buf = xrealloc(oldptr, newsize);
if (buf == NULL)
raise(SIGUSR1);
return buf;
}
/*************************************************************************/
char *sstrdup(const char *s FILELINE)
{
char *t = xsmalloc(strlen(s) + 1);
strcpy(t, s); /* safe, obviously */
return t;
}
/*************************************************************************/
/************ Everything from here down is MEMCHECKS-related. ************/
/*************************************************************************/
#if MEMCHECKS
/*************************************************************************/
static long allocated = 0; /* Amount of memory currently allocated */
static long runtime = 0; /* `allocated' value at init_memory() time */
# if SHOWALLOCS
int showallocs = 1; /* Actually log allocations? */
# endif
typedef struct _smemblock {
long size; /* Size of this block */
int32 sig; /* Signature word: 0x5AFEC0DE */
} MemBlock;
# define SIGNATURE 0x5AFEC0DE
# define FREE_SIGNATURE 0xDEADBEEF /* Used for freed memory */
# define NEW_FILL 0xD017D017 /* New allocs are filled with this */
# define FREE_FILL 0xBEEF1E57 /* Freed memory is filled with this */
# define MEMBLOCK_TO_PTR(mb) ((void *)((char *)(mb) + sizeof(MemBlock)))
# define PTR_TO_MEMBLOCK(ptr) ((MemBlock *)((char *)(ptr) - sizeof(MemBlock)))
/*************************************************************************/
/*************************************************************************/
/* Leak-checking initialization and exit code. */
static void show_leaks(void)
{
if (runtime >= 0 && (allocated - runtime) > 0) {
log("SAFEMEM: There were %ld bytes leaked on exit!",
(allocated - runtime));
} else {
log("SAFEMEM: No memory leaks detected.");
}
}
void init_memory(void)
{
runtime = allocated;
log("init_memory(): runtime = %ld", runtime);
atexit(show_leaks);
}
/* Used to avoid memory-leak message from the parent process */
void uninit_memory(void)
{
runtime = -1;
}
/*************************************************************************/
/* Helper to fill memory with a given 32-bit value. */
static inline void fill32(void *ptr, uint32 value, long size)
{
register uint32 *ptr32 = ptr;
register uint32 v = value;
while (size >= 4) {
*ptr32++ = v;
size -= 4;
}
if (size > 0)
memcpy(ptr32, &value, size);
}
/*************************************************************************/
/*************************************************************************/
/* Substitutes for malloc() and friends. memory.h redefines malloc(), etc.
* to these functions if MEMCHECKS is defined. */
/*************************************************************************/
void *MCmalloc(long size, const char *file, int line)
{
MemBlock *mb;
void *data;
if (size == 0)
return NULL;
mb = malloc(size + sizeof(MemBlock));
if (mb) {
mb->size = size;
mb->sig = SIGNATURE;
data = MEMBLOCK_TO_PTR(mb);
allocated += size;
# if SHOWALLOCS
if (showallocs) {
log("smalloc(): Allocated %ld bytes at %p (%s:%d)",
size, data, file, line);
}
# endif
fill32(data, NEW_FILL, size);
return data;
} else {
# if SHOWALLOCS
if (showallocs) {
log("mcalloc(): Unable to allocate %ld bytes (%s:%d)",
size, file, line);
}
# endif
return NULL;
}
}
/*************************************************************************/
void *MCcalloc(long els, long elsize, const char *file, int line)
{
MemBlock *mb;
void *data;
if (elsize == 0 || els == 0)
return NULL;
mb = malloc(els*elsize + sizeof(MemBlock));
if (mb) {
mb->size = elsize * els;
mb->sig = SIGNATURE;
data = MEMBLOCK_TO_PTR(mb);
memset(data, 0, els*elsize);
allocated += mb->size;
# if SHOWALLOCS
if (showallocs) {
log("scalloc(): Allocated %ld bytes at %p (%s:%d)",
els*elsize, data, file, line);
}
# endif
return data;
} else {
# if SHOWALLOCS
if (showallocs) {
log("scalloc(): Unable to allocate %ld bytes (%s:%d)",
els*elsize, file, line);
}
# endif
return NULL;
}
}
/*************************************************************************/
void *MCrealloc(void *oldptr, long newsize, const char *file, int line)
{
MemBlock *newb, *oldb;
long oldsize;
void *data;
if (newsize == 0) {
MCfree(oldptr, file, line);
return NULL;
}
if (oldptr == NULL)
return MCmalloc(newsize, file, line);
oldb = PTR_TO_MEMBLOCK(oldptr);
if (oldb->sig != SIGNATURE) {
fatal("Attempt to realloc() an invalid pointer (%p) (%s:%d)",
oldptr, file, line);
}
oldsize = oldb->size;
newb = realloc(oldb, newsize + sizeof(MemBlock));
if (newb) {
newb->size = newsize;
newb->sig = SIGNATURE; /* should already be set... */
data = MEMBLOCK_TO_PTR(newb);
allocated += (newsize - oldsize);
# if SHOWALLOCS
if (showallocs) {
log("srealloc(): Adjusted %ld bytes (%p) to %ld bytes (%p)"
" (%s:%d)", oldsize, oldptr, newsize, data, file, line);
}
# endif
return data;
} else {
# if SHOWALLOCS
if (showallocs) {
log("srealloc(): Unable to adjust %ld bytes (%p) to %ld bytes"
" (%s:%d)", oldsize, oldptr, newsize, file, line);
}
# endif
return NULL;
}
}
/*************************************************************************/
void MCfree(void *ptr, const char *file, int line)
{
MemBlock *mb;
if (ptr == NULL)
return;
mb = PTR_TO_MEMBLOCK(ptr);
if (mb->sig != SIGNATURE) {
fatal("Attempt to free() an invalid pointer (%p) (%s:%d)",
ptr, file, line);
}
allocated -= mb->size;
# if SHOWALLOCS
if (showallocs) {
log("sfree(): Released %ld bytes at %p (%s:%d)",
mb->size, ptr, file, line);
}
# endif
mb->size = FREE_FILL;
mb->sig = FREE_SIGNATURE;
fill32(ptr, FREE_FILL, mb->size);
free(mb);
}
/*************************************************************************/
char *MCstrdup(const char *s, const char *file, int line)
{
char *t = MCmalloc(strlen(s) + 1, file, line);
strcpy(t, s); /* safe, obviously */
return t;
}
/*************************************************************************/
#endif /* MEMCHECKS */
/*
* Local variables:
* c-file-style: "stroustrup"
* c-file-offsets: ((case-label . *) (statement-case-intro . *))
* indent-tabs-mode: nil
* End:
*
* vim: expandtab shiftwidth=4:
*/

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/* Memory management include file.
*
* IRC Services is copyright (c) 1996-2009 Andrew Church.
* E-mail: <achurch@achurch.org>
* Parts written by Andrew Kempe and others.
* This program is free but copyrighted software; see the file GPL.txt for
* details.
*/
#ifndef MEMORY_H
#define MEMORY_H
/*************************************************************************/
#if MEMCHECKS
# define FILELINE , const char *file, int line
#else
# define FILELINE /*nothing*/
#endif
extern void *smalloc(long size FILELINE);
extern void *scalloc(long els, long elsize FILELINE);
extern void *srealloc(void *oldptr, long newsize FILELINE);
extern char *sstrdup(const char *s FILELINE);
#undef FILELINE
#if MEMCHECKS
# if SHOWALLOCS
extern int showallocs;
# endif
extern void init_memory(void);
extern void uninit_memory(void);
extern void *MCmalloc(long size, const char *file, int line);
extern void *MCcalloc(long elsize, long els, const char *file, int line);
extern void *MCrealloc(void *oldptr, long newsize, const char *file, int line);
extern void MCfree(void *ptr, const char *file, int line);
extern char *MCstrdup(const char *s, const char *file, int line);
#else /* !MEMCHECKS */
# define init_memory() /*nothing*/
# define uninit_memory() /*nothing*/
#endif
/*************************************************************************/
#if MEMCHECKS && !defined(NO_MEMREDEF)
# undef malloc
# undef calloc
# undef realloc
# undef free
# undef strdup
# define malloc(size) MCmalloc(size,__FILE__,__LINE__)
# define calloc(elsize,els) MCcalloc(elsize,els,__FILE__,__LINE__)
# define realloc(ptr,size) MCrealloc(ptr,size,__FILE__,__LINE__)
# define free(ptr) MCfree(ptr,__FILE__,__LINE__)
# define strdup(str) MCstrdup(str,__FILE__,__LINE__)
# define smalloc(size) smalloc(size,__FILE__,__LINE__)
# define scalloc(elsize,els) scalloc(elsize,els,__FILE__,__LINE__)
# define srealloc(ptr,size) srealloc(ptr,size,__FILE__,__LINE__)
# define sstrdup(str) sstrdup(str,__FILE__,__LINE__)
#endif /* MEMCHECKS && !NO_MEMREDEF */
/*************************************************************************/
#endif /* MEMORY_H */
/*
* Local variables:
* c-file-style: "stroustrup"
* c-file-offsets: ((case-label . *) (statement-case-intro . *))
* indent-tabs-mode: nil
* End:
*
* vim: expandtab shiftwidth=4:
*/

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/* Definitions of IRC message functions and list of messages.
*
* IRC Services is copyright (c) 1996-2009 Andrew Church.
* E-mail: <achurch@achurch.org>
* Parts written by Andrew Kempe and others.
* This program is free but copyrighted software; see the file GPL.txt for
* details.
*/
#include "services.h"
#include "messages.h"
#include "language.h"
#include "modules.h"
#include "version.h"
#include "modules/operserv/operserv.h"
/*************************************************************************/
/* Enable ignore code for PRIVMSGs? */
int allow_ignore = 1;
/* Callbacks for various messages */
static int cb_privmsg = -1;
static int cb_whois = -1;
/*************************************************************************/
/************************ Basic message handling *************************/
/*************************************************************************/
static void m_nickcoll(char *source, int ac, char **av)
{
if (ac < 1)
return;
if (!readonly)
introduce_user(av[0]);
}
/*************************************************************************/
static void m_ping(char *source, int ac, char **av)
{
if (ac < 1)
return;
send_cmd(ServerName, "PONG %s %s", ac>1 ? av[1] : ServerName, av[0]);
}
/*************************************************************************/
static void m_info(char *source, int ac, char **av)
{
int i;
struct tm *tm;
char timebuf[64];
if (!*source) {
log("Source missing from INFO message");
return;
}
tm = localtime(&start_time);
strftime(timebuf, sizeof(timebuf), "%a %b %d %H:%M:%S %Y %Z", tm);
for (i = 0; info_text[i]; i++)
send_cmd(ServerName, "371 %s :%s", source, info_text[i]);
send_cmd(ServerName, "371 %s :Version %s (%s)", source,
version_number, version_build);
send_cmd(ServerName, "371 %s :On-line since %s", source, timebuf);
send_cmd(ServerName, "374 %s :End of /INFO list.", source);
}
/*************************************************************************/
static void m_join(char *source, int ac, char **av)
{
if (!*source) {
log("Source missing from JOIN message");
return;
} else if (ac < 1) {
return;
}
do_join(source, ac, av);
}
/*************************************************************************/
static void m_kick(char *source, int ac, char **av)
{
if (!*source) {
log("Source missing from KICK message");
return;
} else if (ac != 3) {
return;
}
do_kick(source, ac, av);
}
/*************************************************************************/
static void m_kill(char *source, int ac, char **av)
{
if (!*source) {
log("Source missing from KILL message");
return;
} else if (ac != 2) {
return;
}
/* Recover if someone kills us. If introduce_user() returns 0, then
* the user in question isn't a pseudoclient, so pass it on to the
* user handling code. */
if (!introduce_user(av[0]))
do_kill(source, ac, av);
}
/*************************************************************************/
static void m_mode(char *source, int ac, char **av)
{
if (!*source) {
log("Source missing from MODE message");
return;
}
if (*av[0] == '#' || *av[0] == '&') {
if (ac < 2)
return;
do_cmode(source, ac, av);
} else {
if (ac != 2) {
return;
} else if (irc_stricmp(source,av[0])!=0 && strchr(source,'.')==NULL) {
log("user: MODE %s %s from different nick %s!", av[0], av[1],
source);
wallops(NULL, "%s attempted to change mode %s for %s",
source, av[1], av[0]);
return;
}
do_umode(source, ac, av);
}
}
/*************************************************************************/
static void m_motd(char *source, int ac, char **av)
{
FILE *f;
char buf[BUFSIZE];
if (!*source) {
log("Source missing from MOTD message");
return;
}
f = fopen(MOTDFilename, "r");
send_cmd(ServerName, "375 %s :- %s Message of the Day",
source, ServerName);
if (f) {
while (fgets(buf, sizeof(buf), f)) {
buf[strlen(buf)-1] = 0;
send_cmd(ServerName, "372 %s :- %s", source, buf);
}
fclose(f);
} else {
send_cmd(ServerName, "372 %s :- MOTD file not found! Please "
"contact your IRC administrator.", source);
}
}
/*************************************************************************/
static void m_part(char *source, int ac, char **av)
{
if (!*source) {
log("Source missing from PART message");
return;
} else if (ac < 1 || ac > 2) {
return;
}
do_part(source, ac, av);
}
/*************************************************************************/
static const char msg_up_inactive[] =
"Network buffer size exceeded inactive threshold (%d%%), not processing"
" PRIVMSGs";
static const char msg_up_ignore[] =
"Network buffer size exceeded ignore threshold (%d%%), ignoring PRIVMSGs";
static const char msg_down_inactive[] =
"Network buffer size dropped below ignore threshold (%d%%), not"
" processing PRIVMSGs";
static const char msg_down_normal[] =
"Network buffer size dropped below inactive threshold (%d%%),"
" processing PRIVMSGs normally";
static void m_privmsg(char *source, int ac, char **av)
{
/* PRIVMSG handling status based on NetBufferLimit settings */
static enum {NORMAL,INACTIVE,IGNORE} netbuf_status = NORMAL;
uint32 start, stop; /* When processing started and finished */
User *u = get_user(source);
char *s;
if (!*source) {
log("Source missing from PRIVMSG message");
return;
} else if (ac != 2) {
return;
}
/* If a server is specified (nick@server format), make sure it matches
* us, and strip it off. */
s = strchr(av[0], '@');
if (s) {
*s++ = 0;
if (stricmp(s, ServerName) != 0)
return;
}
/* Check network buffer status. */
if (NetBufferLimitInactive) {
int bufstat = sock_bufstat(servsock, NULL, NULL, NULL, NULL);
const char *message = NULL;
int value = 0;
switch (netbuf_status) {
case NORMAL:
if (NetBufferLimitIgnore && bufstat >= NetBufferLimitIgnore) {
message = msg_up_ignore;
value = NetBufferLimitIgnore;
netbuf_status = IGNORE;
} else if (bufstat >= NetBufferLimitInactive) {
message = msg_up_inactive;
value = NetBufferLimitInactive;
netbuf_status = INACTIVE;
}
break;
case INACTIVE:
if (NetBufferLimitIgnore && bufstat >= NetBufferLimitIgnore) {
message = msg_up_ignore;
value = NetBufferLimitIgnore;
netbuf_status = IGNORE;
} else if (bufstat < NetBufferLimitInactive) {
message = msg_down_normal;
value = NetBufferLimitInactive;
netbuf_status = NORMAL;
}
break;
case IGNORE:
if (bufstat < NetBufferLimitInactive) {
message = msg_down_normal;
value = NetBufferLimitInactive;
netbuf_status = NORMAL;
} else if (bufstat < NetBufferLimitIgnore) {
message = msg_down_inactive;
value = NetBufferLimitIgnore;
netbuf_status = INACTIVE;
}
break;
} /* switch (netbuf_status) */
if (message) {
log(message, value);
wallops(NULL, message, value);
}
}
/* Check if we should ignore. Operators always get through. */
if (u) {
ignore_update(u, 0);
if (!is_oper(u)) {
if (netbuf_status != NORMAL) {
if (netbuf_status == INACTIVE) {
if (u)
notice_lang(av[0], u, SERVICES_IS_BUSY);
else
notice(av[0], source,
getstring(NULL, SERVICES_IS_BUSY));
}
return;
} else if (allow_ignore && IgnoreDecay && IgnoreThreshold) {
if (u->ignore >= IgnoreThreshold) {
log("Ignored message from %s: \"%s\"", source, inbuf);
return;
}
}
}
}
/* Not ignored; actually execute the command, and update ignore data. */
start = time_msec();
call_callback_3(cb_privmsg, source, av[0], av[1]);
stop = time_msec();
if (stop > start && u && !is_oper(u))
ignore_update(u, stop-start);
}
/*************************************************************************/
static void m_quit(char *source, int ac, char **av)
{
if (!*source) {
log("Source missing from QUIT message");
return;
} else if (ac != 1) {
return;
}
do_quit(source, ac, av);
}
/*************************************************************************/
static void m_server(char *source, int ac, char **av)
{
do_server(source, ac, av);
}
/*************************************************************************/
static void m_squit(char *source, int ac, char **av)
{
do_squit(source, ac, av);
}
/*************************************************************************/
static void m_stats(char *source, int ac, char **av)
{
if (!*source) {
log("Source missing from STATS message");
return;
} else if (ac < 1) {
return;
}
switch (*av[0]) {
case 'u': {
int uptime = time(NULL) - start_time;
Module *module_operserv;
typeof(get_operserv_data) *p_get_operserv_data;
int32 maxusercnt;
send_cmd(NULL, "242 %s :Services up %d day%s, %02d:%02d:%02d",
source, uptime/86400, (uptime/86400 == 1) ? "" : "s",
(uptime/3600) % 24, (uptime/60) % 60, uptime % 60);
if ((module_operserv = find_module("operserv/main")) != NULL
&& (p_get_operserv_data =
get_module_symbol(module_operserv, "get_operserv_data"))
&& p_get_operserv_data(OSDATA_MAXUSERCNT, &maxusercnt)
) {
send_cmd(NULL, "250 %s :Current users: %d (%d ops); maximum %d",
source, usercnt, opcnt, maxusercnt);
} else {
send_cmd(NULL, "250 %s :Current users: %d (%d ops)",
source, usercnt, opcnt);
}
send_cmd(NULL, "219 %s u :End of /STATS report.", source);
break;
} /* case 'u' */
case 'l': {
uint64 read, written;
sock_rwstat(servsock, &read, &written);
send_cmd(NULL, "211 %s Server SendBuf SentBytes SentMsgs RecvBuf "
"RecvBytes RecvMsgs ConnTime", source);
#if SIZEOF_LONG >= 8
send_cmd(NULL, "211 %s %s %u %lu %d %u %lu %d %ld",
source, RemoteServer,
read_buffer_len(servsock), (unsigned long)read, -1,
write_buffer_len(servsock), (unsigned long)written, -1,
(long)start_time);
#else // assume long long is available
send_cmd(NULL, "211 %s %s %u %llu %d %u %llu %d %ld",
source, RemoteServer,
read_buffer_len(servsock), (unsigned long long)read, -1,
write_buffer_len(servsock), (unsigned long long)written, -1,
(long)start_time);
#endif
send_cmd(NULL, "219 %s l :End of /STATS report.", source);
break;
}
case 'c':
case 'h':
case 'i':
case 'k':
case 'm':
case 'o':
case 'y':
send_cmd(NULL, "219 %s %c :/STATS %c not applicable or not supported.",
source, *av[0], *av[0]);
break;
}
}
/*************************************************************************/
static void m_time(char *source, int ac, char **av)
{
time_t t;
struct tm *tm;
char buf[64];
if (!*source) {
log("Source missing from TIME message");
return;
}
time(&t);
tm = localtime(&t);
strftime(buf, sizeof(buf), "%a %b %d %H:%M:%S %Y %Z", tm);
send_cmd(NULL, "391 %s %s :%s", source, ServerName, buf);
}
/*************************************************************************/
static void m_topic(char *source, int ac, char **av)
{
if (ac != 4)
return;
do_topic(source, ac, av);
}
/*************************************************************************/
static void m_version(char *source, int ac, char **av)
{
if (!*source) {
log("Source missing from VERSION message");
return;
}
send_cmd(ServerName, "351 %s %s-%s %s :%s", source,
program_name, version_number, ServerName, version_build);
}
/*************************************************************************/
static void m_whois(char *source, int ac, char **av)
{
if (!*source) {
log("Source missing from WHOIS message");
return;
} else if (ac < 1) {
return;
}
if (call_callback_3(cb_whois, source, av[0],
ac>1 ? av[1] : NULL) <= 0
) {
send_cmd(ServerName, "401 %s %s :No such service.", source, av[0]);
}
}
/*************************************************************************/
/* Basic messages (defined above). Note that NICK and USER are left to the
* protocol modules, since their usage varies widely between protocols. */
static Message base_messages[] = {
{ "401", NULL },
{ "436", m_nickcoll },
{ "AWAY", NULL },
{ "INFO", m_info },
{ "JOIN", m_join },
{ "KICK", m_kick },
{ "KILL", m_kill },
{ "MODE", m_mode },
{ "MOTD", m_motd },
{ "NOTICE", NULL },
{ "PART", m_part },
{ "PASS", NULL },
{ "PING", m_ping },
{ "PONG", NULL },
{ "PRIVMSG", m_privmsg },
{ "QUIT", m_quit },
{ "SERVER", m_server },
{ "SQUIT", m_squit },
{ "STATS", m_stats },
{ "TIME", m_time },
{ "TOPIC", m_topic },
{ "VERSION", m_version },
{ "WALLOPS", NULL },
{ "WHOIS", m_whois },
{ NULL }
};
/*************************************************************************/
/******************** Message registration and lookup ********************/
/*************************************************************************/
/* Structure to link tables together */
typedef struct messagetable_ MessageTable;
struct messagetable_ {
MessageTable *next, *prev;
Message *table;
};
static MessageTable *msgtable = NULL;
/* List of known messages (for speed-lookup list) */
typedef struct messagenode_ MessageNode;
struct messagenode_ {
MessageNode *next, *prev;
Message *msg;
};
static MessageNode *msglist = NULL;
/*************************************************************************/
/*************************************************************************/
/* (Re)generate the speed-lookup list. This list is used to reduce the
* time spent searching for messages; every time a message is seen, its
* entry in this list is moved one place closer to the head of the list,
* allowing frequently-seen messages to "percolate" to the top of the list
* so that they will be found more quickly by searches.
*/
static void init_message_list(void)
{
MessageNode *mn, *mn2;
MessageTable *mt;
Message *m;
LIST_FOREACH_SAFE(mn, msglist, mn2)
free(mn);
msglist = NULL;
LIST_FOREACH (mt, msgtable) {
for (m = mt->table; m->name; m++) {
LIST_SEARCH(msglist, msg->name, m->name, stricmp, mn);
if (!mn) {
mn = smalloc(sizeof(*mn));
mn->msg = m;
LIST_INSERT(mn, msglist);
}
}
}
}
/*************************************************************************/
/* Register the given table of messages. Returns 1 on success, 0 on
* failure (`table' == NULL, `table' already registered, or out of memory).
*/
int register_messages(Message *table)
{
MessageTable *mt;
if (!table)
return 0;
LIST_SEARCH_SCALAR(msgtable, table, table, mt);
if (mt) /* if it's already on the list, abort */
return 0;
mt = malloc(sizeof(*mt));
if (!mt) /* out of memory */
return 0;
mt->table = table;
LIST_INSERT(mt, msgtable);
init_message_list();
return 1;
}
/*************************************************************************/
/* Unregister the given table of messages. Returns 1 on success, 0 on
* failure (`table' not registered).
*/
int unregister_messages(Message *table)
{
MessageTable *mt;
LIST_SEARCH_SCALAR(msgtable, table, table, mt);
if (!mt)
return 0;
LIST_REMOVE(mt, msgtable);
free(mt);
init_message_list();
return 1;
}
/*************************************************************************/
/* Return the Message structure for the given message name, or NULL if none
* exists. If there are multiple tables with entries for the message,
* returns the entry in the most recently registered table.
*/
Message *find_message(const char *name)
{
MessageNode *mn;
LIST_SEARCH(msglist, msg->name, name, stricmp, mn);
if (mn) {
MessageNode *prev = mn->prev;
if (prev) {
MessageNode *pprev = prev->prev;
MessageNode *next = mn->next;
/* Current order: pprev -> prev -> mn -> next */
/* New order: pprev -> mn -> prev -> next */
if (pprev)
pprev->next = mn;
else
msglist = mn;
mn->prev = pprev;
mn->next = prev;
prev->prev = mn;
prev->next = next;
if (next)
next->prev = prev;
}
return mn->msg;
}
return NULL;
}
/*************************************************************************/
/************************ Initialization/cleanup *************************/
/*************************************************************************/
int messages_init(int ac, char **av)
{
if (!register_messages(base_messages)) {
log("messages_init: Unable to register base messages\n");
return 0;
}
cb_privmsg = register_callback("m_privmsg");
cb_whois = register_callback("m_whois");
if (cb_privmsg < 0 || cb_whois < 0) {
log("messages_init: register_callback() failed\n");
return 0;
}
return 1;
}
/*************************************************************************/
void messages_cleanup(void)
{
unregister_callback(cb_whois);
unregister_callback(cb_privmsg);
unregister_messages(base_messages);
}
/*************************************************************************/
/*
* Local variables:
* c-file-style: "stroustrup"
* c-file-offsets: ((case-label . *) (statement-case-intro . *))
* indent-tabs-mode: nil
* End:
*
* vim: expandtab shiftwidth=4:
*/

41
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/* Declarations of IRC message structures, variables, and functions.
*
* IRC Services is copyright (c) 1996-2009 Andrew Church.
* E-mail: <achurch@achurch.org>
* Parts written by Andrew Kempe and others.
* This program is free but copyrighted software; see the file GPL.txt for
* details.
*/
#ifndef MESSAGES_H
#define MESSAGES_H
/*************************************************************************/
/* Type of a message function: */
typedef void (*MessageFunc)(char *source, int ac, char **av);
typedef struct {
const char *name;
MessageFunc func;
} Message;
extern int register_messages(Message *table);
extern int unregister_messages(Message *table);
extern Message *find_message(const char *name);
extern int messages_init(int ac, char **av);
extern void messages_cleanup(void);
/*************************************************************************/
#endif /* MESSAGES_H */
/*
* Local variables:
* c-file-style: "stroustrup"
* c-file-offsets: ((case-label . *) (statement-case-intro . *))
* indent-tabs-mode: nil
* End:
*
* vim: expandtab shiftwidth=4:
*/

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/* Routines for handling mode flags and strings.
*
* IRC Services is copyright (c) 1996-2009 Andrew Church.
* E-mail: <achurch@achurch.org>
* Parts written by Andrew Kempe and others.
* This program is free but copyrighted software; see the file GPL.txt for
* details.
*/
#include "services.h"
/*************************************************************************/
/* List of user/channel modes and associated mode letters. */
ModeData usermodes[] = {
['o'] = {0x00000001},
['i'] = {0x00000002},
['w'] = {0x00000004},
};
ModeData chanmodes[] = {
['i'] = {0x00000001, 0, 0},
['m'] = {0x00000002, 0, 0},
['n'] = {0x00000004, 0, 0},
['p'] = {0x00000008, 0, 0},
['s'] = {0x00000010, 0, 0},
['t'] = {0x00000020, 0, 0},
['k'] = {0x00000040, 1, 1},
['l'] = {0x00000080, 1, 0},
['b'] = {0x80000000, 1, 1, 0, MI_MULTIPLE},
};
ModeData chanusermodes[] = {
['o'] = {0x00000001, 1, 1, '@'},
['v'] = {0x00000002, 1, 1, '+'},
};
/* The following are initialized by mode_setup(): */
int32 usermode_reg; /* Usermodes applied to registered nicks */
int32 chanmode_reg; /* Chanmodes applied to registered chans */
int32 chanmode_regonly; /* Chanmodes indicating regnick-only channels*/
int32 chanmode_opersonly; /* Chanmodes indicating oper-only channels */
char chanmode_multiple[257]; /* Chanmodes that can be set multiple times */
/* Flag tables, used internally to speed up flag lookups. 0 indicates a
* flag with no associated mode. */
static char userflags[31], chanflags[31], chanuserflags[31];
/* Table of channel user mode prefixes, used like flag tables above. */
static int32 prefixtable[256];
/* Tables used for fast lookups. */
static ModeData *modetable[] = {usermodes, chanmodes, chanusermodes};
static char *flagtable[] = {userflags, chanflags, chanuserflags};
/*************************************************************************/
/*************************************************************************/
/* Initialize flag tables and flag sets from mode tables. Must be called
* before any other mode_* function, and should be called again if the mode
* tables are modified.
*/
void mode_setup(void)
{
int i;
ModeData *modelist;
char *flaglist;
int multi_index = 0; /* index into chanmode_multiple[] */
modelist = usermodes;
flaglist = userflags;
for (i = 0; i < 256; i++) {
if (modelist[i].flag) {
int n = 0;
uint32 tmp = (uint32) modelist[i].flag;
if (modelist[i].info & MI_REGISTERED)
usermode_reg |= tmp;
while (tmp >>= 1)
n++;
if (n < 31)
flaglist[n] = (char)i;
}
}
modelist = chanmodes;
flaglist = chanflags;
for (i = 0; i < 256; i++) {
if (modelist[i].flag) {
int n = 0;
uint32 tmp = (uint32) modelist[i].flag;
if (modelist[i].info & MI_REGISTERED)
chanmode_reg |= tmp;
if (modelist[i].info & MI_REGNICKS_ONLY)
chanmode_regonly |= tmp;
if (modelist[i].info & MI_OPERS_ONLY)
chanmode_opersonly |= tmp;
if (modelist[i].info & MI_MULTIPLE)
chanmode_multiple[multi_index++] = i;
while (tmp >>= 1)
n++;
if (n < 31)
flaglist[n] = (char)i;
}
}
chanmode_multiple[multi_index] = 0;
modelist = chanusermodes;
flaglist = chanuserflags;
for (i = 0; i < 256; i++) {
if (modelist[i].flag) {
int n = 0;
uint32 tmp = (uint32) modelist[i].flag;
prefixtable[ (uint8)modelist[i].prefix ] = tmp;
while (tmp >>= 1)
n++;
if (n < 31)
flaglist[n] = (char)i;
if (modelist[i].plus_params!=1 || modelist[i].minus_params!=1) {
log("modes: Warning: channel user mode `%c' takes %d/%d"
" parameters (should be 1/1)",
i, modelist[i].plus_params, modelist[i].minus_params);
}
}
}
}
/*************************************************************************/
/* Return the flag corresponding to the given mode character, or 0 if no
* such mode exists. Return MODE_INVALID if the mode exists but has no
* assigned flag. `which' indicates the mode set to be used: MODE_USER,
* MODE_CHANNEL, or MODE_CHANUSER.
*/
int32 mode_char_to_flag(char c, int which)
{
if (which != MODE_USER && which != MODE_CHANNEL && which != MODE_CHANUSER){
log("mode_char_to_flag(): bad `which' value %d", which);
return MODE_INVALID;
}
return modetable[which][(uint8)c].flag;
}
/*************************************************************************/
/* Return the number of parameters the given mode takes, as
* (plus_params<<8) | (minus_params). Return -1 if there is no such mode.
*/
int mode_char_to_params(char c, int which)
{
ModeData *ptr;
if (which != MODE_USER && which != MODE_CHANNEL && which != MODE_CHANUSER){
log("mode_char_to_params(): bad `which' value %d", which);
return -1;
}
ptr = &modetable[which][(uint8)c];
return ptr->plus_params<<8 | ptr->minus_params;
}
/*************************************************************************/
/* Return the mode character corresponding to the given flag, or 0 if no
* such mode exists. If more than one bit is set in `f', then the mode
* character corresponding to the highest bit is used.
*/
char mode_flag_to_char(int32 f, int which)
{
char *flaglist;
int n = 0, tmp = f;
if (which != MODE_USER && which != MODE_CHANNEL && which != MODE_CHANUSER){
log("mode_flag_to_char(): bad `which' value %d", which);
return 0;
}
flaglist = flagtable[which];
while (tmp >>= 1)
n++;
if (n >= 31)
return 0;
return flaglist[n];
}
/*************************************************************************/
/* Return the flag set corresponding to the given string of mode characters
* in the given mode set. If MODE_NOERROR is set in `which', invalid mode
* characters are ignored; if not set, (CMODE_INVALID | modechar) is
* returned for the first invalid mode character found.
*/
int32 mode_string_to_flags(const char *s, int which)
{
int noerror = (which & MODE_NOERROR);
int32 flags = 0;
const ModeData *modelist;
which &= ~MODE_NOERROR;
if (which != MODE_USER && which != MODE_CHANNEL && which != MODE_CHANUSER){
log("mode_string_to_flags(): bad `which' value %d", which|noerror);
return 0;
}
modelist = modetable[which];
while (*s) {
int f = modelist[(uint8)*s].flag;
if (!f) {
if (noerror) {
s++;
continue;
}
return MODE_INVALID | *s;
}
if (f != MODE_INVALID)
flags |= f;
s++;
}
return flags;
}
/*************************************************************************/
/* Return the string of mode characters corresponding to the given flag
* set. If the flag set has invalid flags in it, they are ignored.
* The returned string is stored in a static buffer which will be
* overwritten on the next call.
*/
char *mode_flags_to_string(int32 flags, int which)
{
static char buf[32];
char *s = buf;
int n = 0;
const char *flaglist;
if (which != MODE_USER && which != MODE_CHANNEL && which != MODE_CHANUSER){
log("mode_flags_to_string(): bad `which' value %d", which);
*buf = 0;
return buf;
}
flaglist = flagtable[which];
flags &= ~MODE_INVALID;
while (flags) {
if ((flags & 1) && flaglist[n])
*s++ = flaglist[n];
n++;
flags >>= 1;
}
*s = 0;
return buf;
}
/*************************************************************************/
/* Return the flag corresponding to the given channel user mode prefix, or
* 0 if no such mode exists.
*/
int32 cumode_prefix_to_flag(char c)
{
return prefixtable[(uint8)c];
}
/*************************************************************************/
/*
* Local variables:
* c-file-style: "stroustrup"
* c-file-offsets: ((case-label . *) (statement-case-intro . *))
* indent-tabs-mode: nil
* End:
*
* vim: expandtab shiftwidth=4:
*/

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/* Mode flag definitions.
*
* IRC Services is copyright (c) 1996-2009 Andrew Church.
* E-mail: <achurch@achurch.org>
* Parts written by Andrew Kempe and others.
* This program is free but copyrighted software; see the file GPL.txt for
* details.
*/
#ifndef MODES_H
#define MODES_H
/*************************************************************************/
/* Special flag constants. */
#define MODE_INVALID 0x80000000 /* Used as error flag, or as "this
* isn't an on/off mode" flag */
#define MODE_ALL (~MODE_INVALID) /* All possible modes */
/*************************************************************************/
/* Data for mode characters. If a mode character is given the MODE_INVALID
* flag, it indicates that that mode is a valid mode but is assigned no
* flag. (For example, channel mode +b uses this.) */
typedef struct {
int32 flag;
uint8 plus_params; /* Number of parameters when adding */
uint8 minus_params; /* Number of characters when deleting */
char prefix; /* Prefix for channel user mode (e.g. +o -> '@') */
uint32 info; /* What kind of mode this is (MI_* below) */
} ModeData;
#define MI_MULTIPLE 0x01 /* Can be set multiple times (+b etc) */
#define MI_REGISTERED 0x02 /* [UC] Applied to all registered nicks/chans */
#define MI_OPERS_ONLY 0x04 /* [ C] Only opers may join */
#define MI_REGNICKS_ONLY 0x08 /* [ C] Only registered/ID'd nicks may join */
/* These bits are available for private use by protocol modules: (see
* Unreal module for an example of usage) */
#define MI_LOCAL_MASK 0xFF000000
/*************************************************************************/
/*
* Arrays of mode characters--one entry for each possible character. These
* are declared extern to allow modules to add entries; read access should
* be done through the functions below.
*
* The following modes are predefined:
* User: o, i, w
* Channel: i, k, l, m, n, p, s, t, b
* Channel user (modes applied to individual users on a channel): o, v
*/
extern ModeData usermodes[256], chanmodes[256], chanusermodes[256];
/* The following are initialized by mode_setup(): */
extern int32 usermode_reg; /* Usermodes applied to registered nicks */
extern int32 chanmode_reg; /* Chanmodes applied to registered chans */
extern int32 chanmode_regonly; /* Chanmodes indicating regnick-only channels*/
extern int32 chanmode_opersonly;/* Chanmodes indicating oper-only channels */
extern char chanmode_multiple[];/* Chanmodes that can be set multiple times */
/*************************************************************************/
/* Initialize flag tables and flag sets from mode tables. Must be called
* before any other mode_* function. */
extern void mode_setup(void);
/* Return the flag corresponding to the given mode character, or 0 if no
* such mode exists. Return MODE_INVALID if the mode exists but has no
* assigned flag. See below for the meaning of "which". */
extern int32 mode_char_to_flag(char c, int which);
/* Return the number of parameters the given mode takes, as
* (plus_params<<8) | (minus_params). Return -1 if there is no such mode. */
extern int mode_char_to_params(char c, int which);
/* Return the mode character corresponding to the given flag, or 0 if no
* such mode exists. */
extern char mode_flag_to_char(int32 f, int which);
/* Return the flag set corresponding to the given string of mode
* characters, or (CMODE_INVALID | modechar) if an invalid mode character
* is found. */
extern int32 mode_string_to_flags(const char *s, int which);
/* Return the string of mode characters corresponding to the given flag
* set. If the flag set has invalid flags in it, they are ignored.
* The returned string is stored in a static buffer which will be
* overwritten on the next call. */
extern char *mode_flags_to_string(int32 flags, int which);
/* Return the flag corresponding to the given channel user mode prefix, or
* 0 if no such mode exists. */
extern int32 cumode_prefix_to_flag(char c);
/*************************************************************************/
/* Values for "which" parameter to mode_* functions: */
#define MODE_USER 0 /* UMODE_* (user modes) */
#define MODE_CHANNEL 1 /* CMODE_* (binary channel modes) */
#define MODE_CHANUSER 2 /* CUMODE_* (channel modes for users) */
#define MODE_NOERROR 0x8000 /* Ignore bad chars in string_to_flags() */
/*************************************************************************/
/* User modes: */
#define UMODE_o 0x00000001
#define UMODE_i 0x00000002
#define UMODE_w 0x00000004
/* Channel modes: */
#define CMODE_i 0x00000001
#define CMODE_m 0x00000002
#define CMODE_n 0x00000004
#define CMODE_p 0x00000008
#define CMODE_s 0x00000010
#define CMODE_t 0x00000020
#define CMODE_k 0x00000040
#define CMODE_l 0x00000080
/* Modes for users on channels: */
#define CUMODE_o 0x00000001
#define CUMODE_v 0x00000002
/*************************************************************************/
/*************************************************************************/
#endif /* MODES_H */
/*
* Local variables:
* c-file-style: "stroustrup"
* c-file-offsets: ((case-label . *) (statement-case-intro . *))
* indent-tabs-mode: nil
* End:
*
* vim: expandtab shiftwidth=4:
*/

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/* Module support include file (interface definition).
*
* IRC Services is copyright (c) 1996-2009 Andrew Church.
* E-mail: <achurch@achurch.org>
* Parts written by Andrew Kempe and others.
* This program is free but copyrighted software; see the file GPL.txt for
* details.
*/
#ifndef MODULES_H
#define MODULES_H
/*************************************************************************/
/* Version code macro. Parameters are:
* major: Major version number (the "5" in 5.1a0).
* minor: Minor version number (the "1" in 5.1a0).
* status: Release status (alpha, prerelease, or final). Use one of
* the MODULE_VERSION_{ALPHA,PRE,FINAL} macros:
* 5.1a0 -> MODULE_VERSION_ALPHA
* 5.1pre0 -> MODULE_VERSION_PRE
* 5.1.0 -> MODULE_VERSION_FINAL
* release: Release number (the "0" in 5.1a0).
*/
#define MODULE_VERSION(major,minor,status,release) ( \
((major) > 5 || ((major) == 5 && (minor) >= 1)) \
? ((major)<<24 | (minor)<<16 | (status)<<12 | (release))\
: (0x050000 | (release)) \
)
#define MODULE_VERSION_ALPHA 0xA
#define MODULE_VERSION_PRE 0xB
#define MODULE_VERSION_FINAL 0xF
/* Version code for modules. This will be updated whenever a change to the
* program (structures, callbacks, etc.) makes existing binary modules
* incompatible. This is stored in the compiled modules and used to let
* Services determine whether a given module is compatible with the current
* binary; it can also be used with #if to make source code compatible with
* multiple versions of Services.
*/
#define MODULE_VERSION_CODE MODULE_VERSION(5,1,MODULE_VERSION_FINAL,0)
/*************************************************************************/
/* Module information. The actual structure is defined in module.c, and is
* opaque to the caller. */
struct Module_;
typedef struct Module_ Module;
/* Callback function prototype. */
typedef int (*callback_t)();
/* Callback priority limits. */
#define CBPRI_MIN -10000
#define CBPRI_MAX 10000
/*************************************************************************/
/* Macro to rename a symbol based on the module's ID (MODULE_ID) in order
* to avoid symbol clashes. This roundabout construction is necessary to
* force the preprocessor to substitute the value of MODULE_ID instead of
* appending "MODULE_ID" literally. */
#define RENAME_SYMBOL(symbol) RENAME_SYMBOL_2(symbol,MODULE_ID)
#define RENAME_SYMBOL_2(symbol,id) RENAME_SYMBOL_3(symbol,id)
#define RENAME_SYMBOL_3(symbol,id) symbol##_##id
/*************************************************************************/
/* Macros to retrieve a pointer to the current module or its name. */
#ifdef MODULE
# define THIS_MODULE RENAME_SYMBOL(_this_module)
#else
# define THIS_MODULE NULL
#endif
#define MODULE_NAME (get_module_name(THIS_MODULE))
/*************************************************************************/
/*************************************************************************/
/* External variable/function declarations. Note that many of the
* functions below are macroized to automatically pass a "current-module"
* parameter; functions whose names begin with "_" should not be called
* directly. */
/*************************************************************************/
/* Initialization and cleanup: */
extern int modules_init(int ac, char **av);
extern void modules_cleanup(void);
extern void unload_all_modules(void);
/*************************************************************************/
/* Module-level functions: */
/* Load a new module and return the Module pointer, or NULL on error. */
extern Module *load_module(const char *modulename);
/* Remove a module from memory. Return nonzero on success, zero on
* failure. */
extern int unload_module(Module *module);
/* Return the Module pointer for the named module, or NULL if no such
* module exists. */
extern Module *find_module(const char *modulename);
/* Increment or decrement the use count for the given module. A module
* cannot be unloaded while its use count is nonzero. */
#define use_module(mod) _use_module(mod,THIS_MODULE)
#define unuse_module(mod) _unuse_module(mod,THIS_MODULE)
extern void _use_module(Module *module, const Module *caller);
extern void _unuse_module(Module *module, const Module *caller);
/* Re-read configuration files for all modules. Return nonzero on success,
* zero on failure. */
int reconfigure_modules(void);
/*************************************************************************/
/* Module symbol/information retrieval: */
/* Retrieve the value of the named symbol in the given module. Return NULL
* if no such symbol exists. Note that this function should not be used
* for symbols whose value might be NULL, because there is no way to
* distinguish a symbol value of NULL from an error return. For such
* symbols, or for cases where a symbol might legitimately not exist and
* no error should be printed for nonexistence, use check_module_symbol(). */
#define get_module_symbol(mod,symname) \
_get_module_symbol(mod,symname,THIS_MODULE)
extern void *_get_module_symbol(Module *module, const char *symname,
const Module *caller);
/* Check whether the given symbol exists in the given module; return 1 if
* so, 0 otherwise. If `resultptr' is non-NULL and the symbol exists, the
* value is stored in the variable it points to. If `errorptr' is non-NULL
* and the symbol does not exist, a human-readable error message is stored
* in the variable it points to. */
extern int check_module_symbol(Module *module, const char *symname,
void **resultptr, const char **errorptr);
/* Retrieve the name of the given module. */
extern const char *get_module_name(const Module *module);
/*************************************************************************/
/* Callback-related functions: (all functions except register_callback()
* and call_callback() return nonzero on success and zero on error)
*/
/* Register a new callback list. */
#define register_callback(name) _register_callback(THIS_MODULE,name)
extern int _register_callback(Module *module, const char *name);
/* Call all functions in a callback list. Return 1 if a callback returned
* nonzero, 0 if all callbacks returned zero, or -1 on error. The _N
* formats allow passing parameters. */
#define call_callback(id) \
call_callback_1(id, NULL)
#define call_callback_1(id,arg1) \
call_callback_2(id, arg1, NULL)
#define call_callback_2(id,arg1,arg2) \
call_callback_3(id, arg1, arg2, NULL)
#define call_callback_3(id,arg1,arg2,arg3) \
call_callback_4(id, arg1, arg2, arg3, NULL)
#define call_callback_4(id,arg1,arg2,arg3,arg4) \
call_callback_5(id, arg1, arg2, arg3, arg4, NULL)
#define call_callback_5(id,arg1,arg2,arg3,arg4,arg5) \
_call_callback_5(THIS_MODULE, id, (void *)(long)(arg1), \
(void *)(long)(arg2), (void *)(long)(arg3), \
(void *)(long)(arg4), (void *)(long)(arg5))
extern int _call_callback_5(Module *module, int id, void *arg1, void *arg2,
void *arg3, void *arg4, void *arg5);
/* Delete a callback list. */
#define unregister_callback(name) _unregister_callback(THIS_MODULE,name)
extern int _unregister_callback(Module *module, int id);
/* Add a function to a callback list with the given priority (higher
* priority value = called sooner). Callbacks with the same priority are
* called in the order they were added. */
#define add_callback_pri(module,name,callback,priority) \
_add_callback_pri(module,name,callback,priority,THIS_MODULE)
int _add_callback_pri(Module *module, const char *name, callback_t callback,
int priority, const Module *caller);
/* Add a function to a callback list with priority 0. */
#define add_callback(module,name,callback) \
add_callback_pri(module,name,callback,0)
/* Remove a function from a callback list. */
#define remove_callback(module,name,callback) \
_remove_callback(module,name,callback,THIS_MODULE)
extern int _remove_callback(Module *module, const char *name,
callback_t callback, const Module *caller);
/*************************************************************************/
/*************************************************************************/
/* Module functions: */
int init_module(void);
int exit_module(int shutdown);
/*************************************************************************/
/* Macros to declare a symbol to be exported. Only one may be used per
* line, and it must be placed at the beginning of the line and be the only
* thing on the line (no semicolon at the end). This does not have any
* actual effect on compilation, but such lines are extracted to create
* module symbol lists. Note that it is not necessary to explicitly list
* the init_module, exit_module, and module_config symbols (and in fact,
* doing so will cause an error when linking the final executable).
*
* Also note that typedefs cannot be used here; use struct tags instead.
*
* Examples:
* EXPORT_VAR(const char *,s_NickServ)
* EXPORT_ARRAY(some_array)
* EXPORT_FUNC(create_akill)
*/
#define EXPORT_VAR(type,symbol)
#define EXPORT_ARRAY(symbol)
#define EXPORT_FUNC(symbol)
/*************************************************************************/
/*************************************************************************/
/* Internal-use stuff. */
/*************************************************************************/
/* Pointer to the current module. This is defined in each module's main
* source file, and automatically initialized by load_module(). Modules
* should use the THIS_MODULE macro to retrieve their own module pointer
* rather than accessing this variable directly.
*/
#ifdef MODULE
# ifndef MODULE_MAIN_FILE
extern
# endif
Module *RENAME_SYMBOL(_this_module);
# ifdef MODULE_MAIN_FILE
Module **_this_module_ptr = &RENAME_SYMBOL(_this_module); /* used by loader */
# endif
#endif
/*************************************************************************/
/* If the preprocessor symbol MODULE_MAIN_FILE is defined, the following
* required variable is automatically defined. This symbol should be
* defined for one (and only one) file per module. (Normally, this symbol
* is defined automatically by modules/Makerules for the main source file
* for each module, and does not need to be defined manually.)
*/
#if defined(MODULE_MAIN_FILE)
const int32 module_version = MODULE_VERSION_CODE;
#endif
/*************************************************************************/
#endif /* MODULES_H */
/*
* Local variables:
* c-file-style: "stroustrup"
* c-file-offsets: ((case-label . *) (statement-case-intro . *))
* indent-tabs-mode: nil
* End:
*
* vim: expandtab shiftwidth=4:
*/

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/* Main processing code for Services.
*
* IRC Services is copyright (c) 1996-2009 Andrew Church.
* E-mail: <achurch@achurch.org>
* Parts written by Andrew Kempe and others.
* This program is free but copyrighted software; see the file GPL.txt for
* details.
*/
#include "services.h"
#include "modules.h"
#include "messages.h"
static int cb_recvmsg = -1;
/*************************************************************************/
/*************************************************************************/
/* split_buf: Split a buffer into arguments and store a pointer to the
* argument vector in argv_ptr; return the argument count.
* The argument vector will point to a static buffer;
* subsequent calls will overwrite this buffer.
* If colon_special is non-zero, then treat a parameter with a
* leading ':' as the last parameter of the line, per the IRC
* RFC. Destroys the buffer by side effect.
*/
static char **sbargv = NULL; /* File scope so process_cleanup() can free it */
int split_buf(char *buf, char ***argv_ptr, int colon_special)
{
static int argvsize = 8;
int argc;
char *s;
if (!sbargv)
sbargv = smalloc(sizeof(char *) * argvsize);
argc = 0;
while (*buf) {
if (argc == argvsize) {
argvsize += 8;
sbargv = srealloc(sbargv, sizeof(char *) * argvsize);
}
if (*buf == ':' && colon_special) {
sbargv[argc++] = buf+1;
*buf = 0;
} else {
s = strpbrk(buf, " ");
if (s) {
*s++ = 0;
while (*s == ' ')
s++;
} else {
s = buf + strlen(buf);
}
sbargv[argc++] = buf;
buf = s;
}
}
*argv_ptr = sbargv;
return argc;
}
/*************************************************************************/
/*************************************************************************/
int process_init(int ac, char **av)
{
cb_recvmsg = register_callback("receive message");
if (cb_recvmsg < 0) {
log("process_init: register_callback() failed\n");
return 0;
}
return 1;
}
/*************************************************************************/
void process_cleanup(void)
{
unregister_callback(cb_recvmsg);
free(sbargv);
sbargv = NULL;
}
/*************************************************************************/
/* process: Main processing routine. Takes the string in inbuf (global
* variable) and does something appropriate with it. */
void process(void)
{
char source[64];
char cmd[64];
char buf[512]; /* Longest legal IRC command line */
char *s;
int ac; /* Parameters for the command */
char **av;
/* If debugging, log the buffer. */
log_debug(1, "Received: %s", inbuf);
/* First make a copy of the buffer so we have the original in case we
* crash - in that case, we want to know what we crashed on. */
strbcpy(buf, inbuf);
/* Split the buffer into pieces. */
if (*buf == ':') {
s = strpbrk(buf, " ");
if (!s)
return;
*s = 0;
while (isspace(*++s))
;
strbcpy(source, buf+1);
strmove(buf, s);
} else {
*source = 0;
}
if (!*buf)
return;
s = strpbrk(buf, " ");
if (s) {
*s = 0;
while (isspace(*++s))
;
} else
s = buf + strlen(buf);
strbcpy(cmd, buf);
ac = split_buf(s, &av, 1);
/* Do something with the message. */
if (call_callback_4(cb_recvmsg, source, cmd, ac, av) <= 0) {
Message *m = find_message(cmd);
if (m) {
if (m->func)
m->func(source, ac, av);
} else {
log("unknown message from server (%s)", inbuf);
}
}
/* Finally, clear the first byte of `inbuf' to signal that we're
* finished processing. */
*inbuf = 0;
}
/*************************************************************************/
/*
* Local variables:
* c-file-style: "stroustrup"
* c-file-offsets: ((case-label . *) (statement-case-intro . *))
* indent-tabs-mode: nil
* End:
*
* vim: expandtab shiftwidth=4:
*/

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/* Routines for sending stuff to the network.
*
* IRC Services is copyright (c) 1996-2009 Andrew Church.
* E-mail: <achurch@achurch.org>
* Parts written by Andrew Kempe and others.
* This program is free but copyrighted software; see the file GPL.txt for
* details.
*/
#define IN_SEND_C
#include "services.h"
#include "modules.h"
#include "language.h"
/*************************************************************************/
time_t last_send; /* Time last data was sent to server */
/* Modes to send for Services users. */
const char *pseudoclient_modes = "";
const char *enforcer_modes = "";
/* Do "oper" pseudoclients really need oper privileges? (1 or 0) */
int pseudoclient_oper = 1;
/* Default handler for module-implemented functions. */
static void unimplemented(void);
/* Functions which are to be implemented by protocol modules. See
* documentation for details. */
FUNCPTR(void, send_nick, (const char *nick, const char *user,
const char *host, const char *server,
const char *name, const char *modes))
= (void *)unimplemented;
FUNCPTR(void, send_nickchange, (const char *nick, const char *newnick))
= (void *)unimplemented;
FUNCPTR(void, send_namechange, (const char *nick, const char *newname))
= (void *)unimplemented;
FUNCPTR(void, send_server, (void))
= (void *)unimplemented;
FUNCPTR(void, send_server_remote, (const char *server, const char *desc))
= (void *)unimplemented;
FUNCPTR(void, wallops, (const char *source, const char *fmt, ...)
FORMAT(printf,2,3))
= (void *)unimplemented;
FUNCPTR(void, notice_all, (const char *source, const char *fmt, ...)
FORMAT(printf,2,3))
= (void *)unimplemented;
FUNCPTR(void, send_channel_cmd, (const char *source, const char *fmt, ...)
FORMAT(printf,2,3))
= (void *)unimplemented;
FUNCPTR(void, send_nickchange_remote, (const char *nick, const char *newnick))
= (void *)unimplemented;
/*************************************************************************/
/* Initialization: set up protocol_* variables, and verify on load that the
* protocol module set everything up correctly.
*/
const char *protocol_name = NULL;
const char *protocol_version = NULL;
uint32 protocol_features = PF_UNSET;
int protocol_nickmax = 0;
#define PROTOCHK(var) \
if (!var) \
fatal("Variable `" #var "' not set by protocol module `%s'", name);
#define FUNCCHK(var) \
if ((void *)var == (void *)unimplemented) \
fatal("Function `" #var "' not set by protocol module `%s'", name);
static int do_load_module(Module *mod, const char *name)
{
/* Assume the first module loaded is a protocol module */
PROTOCHK(protocol_name);
if (protocol_features & PF_UNSET)
fatal("Variable `protocol_features' not set by protocol module `%s'",
name);
PROTOCHK(protocol_nickmax);
FUNCCHK(send_nick);
FUNCCHK(send_nickchange);
FUNCCHK(send_namechange);
FUNCCHK(send_server);
FUNCCHK(send_server_remote);
FUNCCHK(wallops);
FUNCCHK(notice_all);
FUNCCHK(send_channel_cmd);
if (protocol_features & PF_CHANGENICK)
FUNCCHK(send_nickchange_remote);
/* Make sure NICKMAX is large enough to hold the largest nickname
* supported by the protocol plus a trailing NULL. */
if (protocol_nickmax+1 > NICKMAX)
fatal("NICKMAX is too small (%d)--increase to at least %d and"
" recompile", NICKMAX, protocol_nickmax+1);
/* Remove the callback now that everything's checked. */
remove_callback(NULL, "load module", do_load_module);
return 0;
}
#undef FUNCCHK
#undef PROTOCHK
int send_init(int ac, char **av)
{
if (!add_callback(NULL, "load module", do_load_module)) {
log("send.c: Unable to add load module callback");
return 0;
}
return 1;
}
/*************************************************************************/
/* Cleanup. */
void send_cleanup(void)
{
remove_callback(NULL, "load module", do_load_module);
}
/*************************************************************************/
/*************************************************************************/
/* Send a command to the server. The two forms here are like
* printf()/vprintf() and friends. If not connected to a remote server,
* these functions do nothing.
*/
void send_cmd(const char *source, const char *fmt, ...)
{
va_list args;
va_start(args, fmt);
vsend_cmd(source, fmt, args);
va_end(args);
}
void vsend_cmd(const char *source, const char *fmt, va_list args)
{
char buf[BUFSIZE];
if (!servsock)
return;
vsnprintf(buf, sizeof(buf), fmt, args);
if (source) {
if (servsock)
sockprintf(servsock, ":%s %s\r\n", source, buf);
log_debug(1, "Sent: :%s %s", source, buf);
} else {
if (servsock)
sockprintf(servsock, "%s\r\n", buf);
log_debug(1, "Sent: %s", buf);
}
last_send = time(NULL);
}
/*************************************************************************/
/*************************************************************************/
/* Send an ERROR message and close the connection to the server. */
void send_error(const char *fmt, ...)
{
va_list args;
char buf[BUFSIZE];
snprintf(buf, sizeof(buf), "ERROR :%s", fmt);
va_start(args, fmt);
vsend_cmd(NULL, buf, args);
va_end(args);
disconn(servsock);
}
/*************************************************************************/
/* Send a command to change channel modes. (Needed to handle various
* varieties of timestamping. We currently cheat and use a timestamp of
* zero to force our modes through.)
*/
void send_cmode_cmd(const char *source, const char *channel,
const char *fmt, ...)
{
va_list args;
char buf[BUFSIZE];
va_start(args, fmt);
vsnprintf(buf, sizeof(buf), fmt, args);
va_end(args);
if (protocol_features & PF_MODETS_FIRST)
send_channel_cmd(source, "MODE %s 0 %s", channel, buf);
else
send_channel_cmd(source, "MODE %s %s", channel, buf);
}
/*************************************************************************/
/* Introduce a pseudoclient nickname. `flags' includes PSEUDO_OPER if the
* pseudoclient requires IRC operator privileges (however, the client may
* not actually get +o if the server does not require it), and PSEUDO_INVIS
* if the pseudoclient should be invisible (+i).
*/
void send_pseudo_nick(const char *nick, const char *realname, int flags)
{
char modebuf[BUFSIZE];
snprintf(modebuf, sizeof(modebuf), "%s%s%s",
pseudoclient_modes,
(flags & PSEUDO_OPER) && pseudoclient_oper ? "o" : "",
(flags & PSEUDO_INVIS) ? "i" : "");
send_nick(nick, ServiceUser, ServiceHost, ServerName, realname, modebuf);
}
/*************************************************************************/
/* Send a NOTICE from the given source to the given nick. */
void notice(const char *source, const char *dest, const char *fmt, ...)
{
va_list args;
char buf[BUFSIZE];
va_start(args, fmt);
vsnprintf(buf, sizeof(buf), fmt, args);
va_end(args);
send_cmd(source, "NOTICE %s :%s", dest, buf);
}
/* Send a NULL-terminated array of text as NOTICEs. */
void notice_list(const char *source, const char *dest, const char **text)
{
while (*text) {
/* Have to kludge around client/server silliness here: if a notice
* includes no text, it is ignored, so we replace blank lines by
* lines with a single space. */
if (**text)
notice(source, dest, *text);
else
notice(source, dest, " ");
text++;
}
}
/* Send a message in the user's selected language to the user using NOTICE. */
void notice_lang(const char *source, const User *dest, int message, ...)
{
va_list args;
char buf[4096]; /* because messages can be really big */
char *s, *t;
const char *fmt;
if (!dest)
return;
fmt = getstring(dest->ngi, message);
if (!fmt)
return;
va_start(args, message);
vsnprintf(buf, sizeof(buf), fmt, args);
va_end(args);
s = buf;
while (*s) {
char c;
t = s;
s += strcspn(s, "\n");
c = *s;
*s = 0;
send_cmd(source, "NOTICE %s :%s", dest->nick, *t ? t : " ");
*s = c;
if (c)
s++;
}
}
/* Like notice_lang(), but replace %S by the source. This is an ugly hack
* to simplify letting help messages display the name of the pseudoclient
* that's sending them.
*/
void notice_help(const char *source, const User *dest, int message, ...)
{
va_list args;
char buf[4096], buf2[4096], outbuf[BUFSIZE];
char *s, *t;
const char *fmt;
if (!dest)
return;
fmt = getstring(dest->ngi, message);
if (!fmt)
return;
/* Some sprintf()'s eat %S or turn it into just S, so change all %S's
* into \1\1... we assume this doesn't occur anywhere else in the
* string. */
strbcpy(buf2, fmt);
strnrepl(buf2, sizeof(buf2), "%S", "\1\1");
va_start(args, message);
vsnprintf(buf, sizeof(buf), buf2, args);
va_end(args);
s = buf;
while (*s) {
char c;
t = s;
s += strcspn(s, "\n");
c = *s;
*s = 0;
strbcpy(outbuf, t);
*s = c;
if (c)
s++;
strnrepl(outbuf, sizeof(outbuf), "\1\1", source);
send_cmd(source, "NOTICE %s :%s", dest->nick, *outbuf ? outbuf : " ");
}
}
/*************************************************************************/
/* Send a PRIVMSG from the given source to the given nick. */
void privmsg(const char *source, const char *dest, const char *fmt, ...)
{
va_list args;
char buf[BUFSIZE];
va_start(args, fmt);
vsnprintf(buf, sizeof(buf), fmt, args);
va_end(args);
send_cmd(source, "PRIVMSG %s :%s", dest, buf);
}
/*************************************************************************/
/*************************************************************************/
/* Handler for unimplemented functions. */
static void unimplemented(void)
{
fatal("send.c: No (or bad) protocol module loaded.");
}
/*************************************************************************/
/*
* Local variables:
* c-file-style: "stroustrup"
* c-file-offsets: ((case-label . *) (statement-case-intro . *))
* indent-tabs-mode: nil
* End:
*
* vim: expandtab shiftwidth=4:
*/

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/* Common routines and constants for message sending.
*
* IRC Services is copyright (c) 1996-2009 Andrew Church.
* E-mail: <achurch@achurch.org>
* Parts written by Andrew Kempe and others.
* This program is free but copyrighted software; see the file GPL.txt for
* details.
*/
#ifndef SEND_H
#define SEND_H
/*************************************************************************/
/* Protocol information (set by protocol module): */
extern const char *protocol_name;
extern const char *protocol_version;
extern uint32 protocol_features;
extern int protocol_nickmax;
extern const char *pseudoclient_modes;
extern const char *enforcer_modes;
extern int pseudoclient_oper;
/* Constants for protocol_features: */
/* Has a "halfop" (+h) channel user mode (Unreal, etc.) */
#define PF_HALFOP 0x00000001
/* Has "protect" (+a) and "owner" (+q) channel user modes (Unreal, etc.) */
#define PF_CHANPROT 0x00000002
/* Has channel ban exceptions (+e) */
#define PF_BANEXCEPT 0x00000004
/* Has SZLINE command or equivalent (ban IP address/mask from all servers) */
#define PF_SZLINE 0x00000008
/* Suppresses QUIT messages from clients on server disconnects */
#define PF_NOQUIT 0x00000010
/* Supports some method to make a client join a channel */
#define PF_SVSJOIN 0x00000020
/* Supports some method of forcibly changing a client's nickname */
#define PF_CHANGENICK 0x00000040
/* Supports autokill exclusions */
#define PF_AKILL_EXCL 0x00000080
/* Timestamp in MODE message comes right after channel name */
#define PF_MODETS_FIRST 0x00000100
/* Has channel invite masks (+I) */
#define PF_INVITEMASK 0x00000200
/* Invalid flag, used to check whether protocol_features was set */
#define PF_UNSET 0x80000000
/* Routines to be implemented by protocol modules: */
E_FUNCPTR(void, send_nick, (const char *nick, const char *user,
const char *host, const char *server,
const char *name, const char *modes));
E_FUNCPTR(void, send_nickchange, (const char *nick, const char *newnick));
E_FUNCPTR(void, send_namechange, (const char *nick, const char *newname));
E_FUNCPTR(void, send_server, (void));
E_FUNCPTR(void, send_server_remote, (const char *server, const char *desc));
E_FUNCPTR(void, wallops, (const char *source, const char *fmt, ...)
FORMAT(printf,2,3));
E_FUNCPTR(void, notice_all, (const char *source, const char *fmt, ...)
FORMAT(printf,2,3));
E_FUNCPTR(void, send_channel_cmd, (const char *source, const char *fmt, ...)
FORMAT(printf,2,3));
E_FUNCPTR(void, send_nickchange_remote,
(const char *nick, const char *newnick));
/*************************************************************************/
/* Flags for send_pseudo_nick(): */
/* Pseudoclient requires oper privileges (note that depending on the
* protocol, the pseudoclient may not actually get +o) */
#define PSEUDO_OPER 0x01
/* Pseudoclient should be invisible (+i) */
#define PSEUDO_INVIS 0x02
/*************************************************************************/
/* External declarations. */
/* Last time at which data was sent. Used to check whether a PING needs
* to be sent. */
extern time_t last_send;
/* Initialization/cleanup */
extern int send_init(int ac, char **av);
extern void send_cleanup(void);
/* Basic message-sending routine ([v]printf-like) */
extern void send_cmd(const char *source, const char *fmt, ...)
FORMAT(printf,2,3);
extern void vsend_cmd(const char *source, const char *fmt, va_list args)
FORMAT(printf,2,0);
/* Shortcuts for sending miscellaneous messages */
extern void send_error(const char *fmt, ...) FORMAT(printf,1,2);
extern void send_cmode_cmd(const char *source, const char *channel,
const char *fmt, ...);
extern void send_pseudo_nick(const char *nick, const char *realname,
int flags);
/* Routines for PRIVMSG/NOTICE sending */
extern void notice(const char *source, const char *dest, const char *fmt, ...)
FORMAT(printf,3,4);
extern void notice_list(const char *source, const char *dest,
const char **text);
extern void notice_lang(const char *source, const User *dest, int message,
...);
extern void notice_help(const char *source, const User *dest, int message,
...);
extern void privmsg(const char *source, const char *dest, const char *fmt, ...)
FORMAT(printf,3,4);
/*************************************************************************/
#endif /* SEND_H */
/*
* Local variables:
* c-file-style: "stroustrup"
* c-file-offsets: ((case-label . *) (statement-case-intro . *))
* indent-tabs-mode: nil
* End:
*
* vim: expandtab shiftwidth=4:
*/

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/* Routines to maintain a list of online servers.
* Based on code by Andrew Kempe (TheShadow)
* E-mail: <theshadow@shadowfire.org>
*
* IRC Services is copyright (c) 1996-2009 Andrew Church.
* E-mail: <achurch@achurch.org>
* Parts written by Andrew Kempe and others.
* This program is free but copyrighted software; see the file GPL.txt for
* details.
*/
#include "services.h"
#include "modules.h"
/*************************************************************************/
#define add_server static add_server
#define del_server static del_server
#include "hash.h"
DEFINE_HASH(server, Server, name)
#undef add_server
#undef del_server
static Server *root_server; /* Entry for root server (Services) */
static int16 servercnt = 0; /* Number of online servers */
/* Callback IDs: */
static int cb_create = -1;
static int cb_delete = -1;
/*************************************************************************/
/**************************** Internal functions *************************/
/*************************************************************************/
/* Allocate a new Server structure, fill in basic values, link it to the
* overall list, and return it. Always successful.
*/
static Server *new_server(const char *servername)
{
Server *server;
servercnt++;
server = scalloc(sizeof(Server), 1);
server->name = sstrdup(servername);
add_server(server);
return server;
}
/* Remove and free a Server structure. */
static void delete_server(Server *server)
{
del_server(server);
servercnt--;
free(server->name);
free(server);
}
/*************************************************************************/
/* Remove the given server. This takes care of recursively removing child
* servers, handling NOQUIT, calling the server delete callback, and
* actually deleting the server data.
*/
static void recursive_squit(Server *parent, const char *reason);
static void squit_server(Server *server, const char *reason)
{
User *user, *nextuser;
recursive_squit(server, reason);
if (protocol_features & PF_NOQUIT) {
#define next snext
#define prev sprev
LIST_FOREACH_SAFE (user, server->userlist, nextuser)
quit_user(user, reason, 0);
#undef next
#undef prev
}
if (!server->fake)
call_callback_2(cb_delete, server, reason);
delete_server(server);
}
/* "SQUIT" all servers who are linked to us via the specified server by
* deleting them from the server list. The parent server is not deleted,
* so this must be done by the calling function.
*/
static void recursive_squit(Server *parent, const char *reason)
{
Server *server, *nextserver;
server = parent->child;
log_debug(2, "recursive_squit, parent: %s", parent->name);
while (server) {
nextserver = server->sibling;
log_debug(2, "recursive_squit, child: %s", server->name);
squit_server(server, reason);
server = nextserver;
}
}
/*************************************************************************/
/**************************** External functions *************************/
/*************************************************************************/
/* Handle a server SERVER command.
* source = server's hub; an empty string indicates that this is our hub.
* av[0] = server's name
* If ac < 0, the server in av[0] is assumed to be a "dummy" server that
* should not be passed to the callback (e.g. for JUPE).
*
* When called internally to add a server (from OperServ JUPE, etc.),
* callers may assume that the contents of the argument strings will not be
* modified.
*/
void do_server(const char *source, int ac, char **av)
{
Server *server, *tmpserver;
server = new_server(av[0]);
server->t_join = time(NULL);
server->child = NULL;
server->sibling = NULL;
if (source && *source) {
server->hub = get_server(source);
if (!server->hub) {
/* PARANOIA: This should NEVER EVER happen, but we check anyway.
*
* I've heard that on older ircds it is possible for "source"
* not to be the new server's hub. This will cause problems.
* -TheShadow
*/
wallops(ServerName,
"WARNING: Could not find server \2%s\2 which is supposed "
"to be the hub for \2%s\2", source, av[0]);
log("server: could not find hub %s for %s", source, av[0]);
return;
}
} else {
server->hub = root_server;
}
if (!server->hub->child) {
server->hub->child = server;
} else {
tmpserver = server->hub->child;
while (tmpserver->sibling)
tmpserver = tmpserver->sibling;
tmpserver->sibling = server;
}
if (ac > 0)
call_callback_1(cb_create, server);
else
server->fake = 1;
return;
}
/*************************************************************************/
/* Handle a server SQUIT command.
* av[0] = server's name
* av[1] = quit message
*/
void do_squit(const char *source, int ac, char **av)
{
Server *server;
server = get_server(av[0]);
if (server) {
if (server->hub) {
if (server->hub->child == server) {
server->hub->child = server->sibling;
} else {
Server *tmpserver;
for (tmpserver = server->hub->child; tmpserver->sibling;
tmpserver = tmpserver->sibling) {
if (tmpserver->sibling == server) {
tmpserver->sibling = server->sibling;
break;
}
}
}
}
squit_server(server, av[1]);
} else {
wallops(ServerName,
"WARNING: Tried to quit non-existent server: \2%s", av[0]);
log("server: Tried to quit non-existent server: %s", av[0]);
log("server: Input buffer: %s", inbuf);
return;
}
}
/*************************************************************************/
/*************************************************************************/
int server_init(int ac, char **av)
{
Server *server;
cb_create = register_callback("server create");
cb_delete = register_callback("server delete");
if (cb_create < 0 || cb_delete < 0) {
log("server_init: register_callback() failed\n");
return 0;
}
server = new_server("");
server->fake = 1;
server->t_join = time(NULL);
server->hub = server->child = server->sibling = NULL;
root_server = server;
return 1;
}
/*************************************************************************/
/* Remove all servers; this recursively takes out all users and channels,
* as well.
*/
void server_cleanup(void)
{
uint32 pf = protocol_features;
protocol_features |= PF_NOQUIT;
squit_server(root_server, "server_cleanup");
protocol_features = pf;
unregister_callback(cb_delete);
unregister_callback(cb_create);
}
/*************************************************************************/
/* Return information on memory use. Assumes pointers are valid. */
void get_server_stats(long *nservers, long *memuse)
{
Server *server;
long mem;
mem = sizeof(Server) * servercnt;
for (server = first_server(); server; server = next_server())
mem += strlen(server->name)+1;
*nservers = servercnt;
*memuse = mem;
}
/*************************************************************************/
/*
* Local variables:
* c-file-style: "stroustrup"
* c-file-offsets: ((case-label . *) (statement-case-intro . *))
* indent-tabs-mode: nil
* End:
*
* vim: expandtab shiftwidth=4:
*/

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/* Online server data.
*
* IRC Services is copyright (c) 1996-2009 Andrew Church.
* E-mail: <achurch@achurch.org>
* Parts written by Andrew Kempe and others.
* This program is free but copyrighted software; see the file GPL.txt for
* details.
*/
#ifndef SERVERS_H
#define SERVERS_H
/*************************************************************************/
struct server_ {
Server *next, *prev; /* Use to navigate the entire server list */
Server *hub; /* Server's hub from our point of view */
Server *child, *sibling; /* Server's children from our P.O.V. */
int fake; /* Is this a "fake" (root/juped) server? */
char *name; /* Server's name */
time_t t_join; /* Time server joined us (0 == not here). */
User *userlist; /* List of users on server. NOTE: this is
* linked via snext/sprev, not next/prev. */
ServerStats *stats;
};
/*************************************************************************/
#endif /* SERVERS_H */
/*
* Local variables:
* c-file-style: "stroustrup"
* c-file-offsets: ((case-label . *) (statement-case-intro . *))
* indent-tabs-mode: nil
* End:
*
* vim: expandtab shiftwidth=4:
*/

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/* Main header for Services.
*
* IRC Services is copyright (c) 1996-2009 Andrew Church.
* E-mail: <achurch@achurch.org>
* Parts written by Andrew Kempe and others.
* This program is free but copyrighted software; see the file GPL.txt for
* details.
*/
#ifndef SERVICES_H
#define SERVICES_H
/*************************************************************************/
/* System configuration information (from "configure"): */
#include "config.h"
/* User configuration and basic constants, macros, and includes: */
#include "defs.h"
/*************************************************************************/
/*************************************************************************/
/* Types corresponding to various structures. These have to come first
* because some structures reference each other circularly. */
typedef struct user_ User;
typedef struct channel_ Channel;
typedef struct server_ Server;
typedef struct serverstats_ ServerStats;
typedef struct nickinfo_ NickInfo;
typedef struct nickgroupinfo_ NickGroupInfo;
typedef struct channelinfo_ ChannelInfo;
typedef struct memoinfo_ MemoInfo;
/* Types for various name buffers, so we can make arrays of them. */
typedef char nickname_t[NICKMAX];
typedef char channame_t[CHANMAX];
/*************************************************************************/
/* Suspension info structure. */
typedef struct suspendinfo_ SuspendInfo;
struct suspendinfo_ {
char who[NICKMAX]; /* who added this suspension */
char *reason;
time_t suspended;
time_t expires; /* 0 for no expiry */
};
/*************************************************************************/
/* Constants for "what" parameter to clear_channel(). */
#define CLEAR_MODES 0x0001 /* Binary modes */
#define CLEAR_BANS 0x0002 /* Bans */
#define CLEAR_EXCEPTS 0x0004 /* Ban exceptions (no-op if not supported) */
#define CLEAR_INVITES 0x0008 /* Invite masks (no-op if not supported) */
#define CLEAR_UMODES 0x0010 /* User modes (+v, +o) */
#define CLEAR_USERS 0x8000 /* Kick all users and empty the channel */
/* All channel modes: */
#define CLEAR_CMODES (CLEAR_MODES|CLEAR_BANS|CLEAR_EXCEPTS|CLEAR_INVITES)
/*************************************************************************/
/*************************************************************************/
/* All other "main" include files. */
#include "memory.h"
#include "list-array.h"
#include "log.h"
#include "sockets.h"
#include "send.h"
#include "modes.h"
#include "users.h"
#include "channels.h"
#include "servers.h"
#include "extern.h"
/*************************************************************************/
#endif /* SERVICES_H */
/*
* Local variables:
* c-file-style: "stroustrup"
* c-file-offsets: ((case-label . *) (statement-case-intro . *))
* indent-tabs-mode: nil
* End:
*
* vim: expandtab shiftwidth=4:
*/

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/* Signal handling routines.
*
* IRC Services is copyright (c) 1996-2009 Andrew Church.
* E-mail: <achurch@achurch.org>
* Parts written by Andrew Kempe and others.
* This program is free but copyrighted software; see the file GPL.txt for
* details.
*/
#include "services.h"
#include <setjmp.h>
/*************************************************************************/
/* If we get a signal, use this to jump out of the main loop. */
static sigjmp_buf *panic_ptr = NULL;
/*************************************************************************/
/*************************************************************************/
/* Various signal handlers. */
/*************************************************************************/
/* SIGHUP = save databases and rehash configuration files */
static void sighup_handler(int sig_unused)
{
signal(SIGHUP, SIG_IGN); /* in case we get double signalled */
log("Received SIGHUP, saving data and rehashing.");
wallops(NULL,
"Received SIGHUP, saving data and rehashing configuration files");
save_data_now();
reconfigure();
signal(SIGHUP, sighup_handler);
}
/*************************************************************************/
/* SIGTERM = save databases and shut down */
static void sigterm_handler(int sig_unused)
{
save_data = 1;
delayed_quit = 1;
signal(SIGTERM, SIG_IGN);
signal(SIGHUP, SIG_IGN);
log("Received SIGTERM, exiting.");
strbcpy(quitmsg, "Shutting down on SIGTERM");
siglongjmp(*panic_ptr, 1);
}
/*************************************************************************/
/* SIGUSR2 = close and reopen log file */
static void sigusr2_handler(int sig_unused)
{
log("Received SIGUSR2, cycling log file.");
if (log_is_open()) {
close_log();
open_log();
}
signal(SIGUSR2, sigusr2_handler);
}
/*************************************************************************/
/* If we get a weird signal, come here. */
static void weirdsig_handler(int signum)
{
static int dying = 0; /* Flag to avoid infinite recursion */
if (dying++) {
/* Double signal, give up. Set `servsock' to NULL to avoid a
* message going out that way, just in case the socket code is
* confused/broken */
servsock = NULL;
if (signum == SIGUSR2) {
fatal("Out of memory while shutting down");
} else {
#if HAVE_STRSIGNAL
fatal("Caught signal %d (%s) while shutting down", signum,
strsignal(signum));
#else
fatal("Caught signal %d while shutting down", signum);
#endif
}
}
/* Avoid spurious keyboard signals killing us while shutting down */
signal(SIGINT, SIG_IGN);
signal(SIGQUIT, SIG_IGN);
signal(SIGTSTP, SIG_IGN);
/* If we died processing a message, let people know about it */
if (signum != SIGINT && signum != SIGQUIT) {
if (*inbuf) {
log("PANIC! signal %d, buffer = %s", signum, inbuf);
/* Cut off if this would make IRC command >510 characters. */
if (strlen(inbuf) > 448) {
inbuf[446] = '>';
inbuf[447] = '>';
inbuf[448] = 0;
}
wallops(NULL, "PANIC! buffer = %s\r\n", inbuf);
} else {
log("PANIC! signal %d (no buffer)", signum);
wallops(NULL, "PANIC! signal %d (no buffer)", signum);
}
}
/* Pick an appropriate quit message */
if (signum == SIGUSR1) {
strbcpy(quitmsg, "Out of memory!");
quitting = 1;
} else {
#if HAVE_STRSIGNAL
snprintf(quitmsg, sizeof(quitmsg),
"Services terminating: %s", strsignal(signum));
#else
snprintf(quitmsg, sizeof(quitmsg),
"Services terminating on signal %d", signum);
#endif
quitting = 1;
}
/* Actually quit */
if (panic_ptr) {
siglongjmp(*panic_ptr, 1);
} else {
log("%s", quitmsg);
if (isatty(2))
fprintf(stderr, "%s\n", quitmsg);
exit(1);
}
}
/*************************************************************************/
/*************************************************************************/
/* Set up signal handlers. Catch certain signals to let us do things or
* panic as necessary, and ignore all others.
*/
void init_signals(void)
{
int i;
/* Start out with special signals disabled */
disable_signals();
/* Set all signals to "ignore" */
for (i = 1; i <= NSIG; i++) {
#if DUMPCORE
if (i != SIGSEGV)
#endif
if (i != SIGPROF && i != SIGCHLD)
signal(i, SIG_IGN);
}
/* Specify particular signals we want to catch */
/* Signals that probably mean bad things have happened */
#if !DUMPCORE
signal(SIGSEGV, weirdsig_handler);
#endif
signal(SIGBUS, weirdsig_handler);
signal(SIGILL, weirdsig_handler);
signal(SIGTRAP, weirdsig_handler);
signal(SIGFPE, weirdsig_handler);
#ifdef SIGIOT
signal(SIGIOT, weirdsig_handler);
#endif
/* This is our "out-of-memory" panic switch */
signal(SIGUSR1, weirdsig_handler);
/* Other special handlers */
signal(SIGTERM, sigterm_handler);
signal(SIGINT, weirdsig_handler);
signal(SIGQUIT, weirdsig_handler);
signal(SIGHUP, sighup_handler);
signal(SIGUSR2, sigusr2_handler);
}
/*************************************************************************/
/* Helper routine for main.c's DO_SIGSETJMP() macro; saves a pointer to the
* environment buffer locally.
*/
void do_sigsetjmp(void *bufptr)
{
panic_ptr = bufptr;
}
/*************************************************************************/
/* Enable or disable receipt of certain signals (in particular, those which
* cause us to take actions other than simply terminating the program, to
* avoid such signals happening at inopportune times and causing things to
* break).
*/
void enable_signals(void)
{
sigset_t sigs;
sigemptyset(&sigs);
sigaddset(&sigs, SIGHUP);
sigaddset(&sigs, SIGTERM);
sigaddset(&sigs, SIGUSR2);
sigprocmask(SIG_UNBLOCK, &sigs, NULL);
}
void disable_signals(void)
{
sigset_t sigs;
sigemptyset(&sigs);
sigaddset(&sigs, SIGHUP);
sigaddset(&sigs, SIGTERM);
sigaddset(&sigs, SIGUSR2);
sigprocmask(SIG_BLOCK, &sigs, NULL);
}
/*************************************************************************/
/*
* Local variables:
* c-file-style: "stroustrup"
* c-file-offsets: ((case-label . *) (statement-case-intro . *))
* indent-tabs-mode: nil
* End:
*
* vim: expandtab shiftwidth=4:
*/

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/* Definitions/declarations for socket utility routines.
*
* IRC Services is copyright (c) 1996-2009 Andrew Church.
* E-mail: <achurch@achurch.org>
* Parts written by Andrew Kempe and others.
* This program is free but copyrighted software; see the file GPL.txt for
* details.
*/
#ifndef SOCKETS_H
#define SOCKETS_H
#include <sys/socket.h> /* for struct sockaddr */
/*************************************************************************/
/* Services implements an event-based socket management system using
* callbacks for socket-related events (connect, disconnect, read).
* Sockets are created using sock_new() and freed using sock_free();
* callbacks are registered using sock_setcb(SCB_*,function). The
* check_sockets() function does the actual checking for socket activity,
* and should be called by the program's main loop.
*
* By default, sockets are non-blocking; if a socket is not ready for
* writing and no more buffer space is available, write attempts will stop
* at that point, setting errno to EAGAIN. sock_set_blocking() allows
* sockets to be set to blocking mode, which causes write attempts to wait
* until either buffer space becomes available or a hard error (such as the
* connection being broken) occurs. sock_get_blocking() returns whether
* the socket is set to blocking mode (nonzero return value, but not -1) or
* not (zero).
*
* Since ordinary writes are buffered, the caller has no easy way to check
* how much of the data has actually been transferred, or, consequently,
* whether the remote host is actually accepting data or just sitting
* around doing nothing. Since the latter case would cause socket slots to
* be used up for long periods of time, the sock_set_wto() function allows
* a write timeout to be set for a socket; if no data is accepted by the
* remote side within the specified number of seconds, the socket will be
* considered dead and processed as if the remote host had closed the
* connection. The write timeout is disabled by default, but if enabled,
* it can be disabled again by setting a timeout value of zero.
*
* Likewise, the program may wish to perform some periodic actions even if
* no socket activity is occurring. The sock_set_rto() function can be
* used to set a global read timeout in milliseconds; if no new data
* arrives during this period, check_sockets() will return control to the
* caller. sock_set_rto(-1) will revert to the default behavior of waiting
* indefinitely for socket activity.
*
* When a callback function is called, it is passed two parameters: a
* pointer to the socket structure (Socket *) for the socket on which the
* event occurred, and a void * parameter whose meaning depends on the
* particular callback (see below). Callbacks will never be called nested
* unless a callback explicitly calls check_sockets(), which is not
* recommended; thus it is safe to set new callbacks for a socket inside of
* a callback function.
*
* There are currently six callbacks implemented:
*
* SCB_CONNECT
* Called when a connection initiated with conn() completes. The
* void * parameter is not used.
*
* SCB_DISCONNECT
* Called when a connection is broken, either by the remote end or as
* a result of calling disconn(). Also called when a connection
* initiated with conn() fails. The void * parameter is set to either
* DISCONN_LOCAL, DISCONN_REMOTE, or DISCONN_CONNFAIL to indicate the
* cause of the disconnection. For DISCONN_REMOTE or DISCONN_CONNFAIL,
* the `errno' variable will contain the cause of disconnection if
* known, zero otherwise.
*
* SCB_ACCEPT
* Called when a listener socket receives a connection. The void *
* parameter, cast to Socket *, is the new socket created for the
* incoming connection; the address of the remote connection can be
* retrieved with sock_remote(). NOTE: a listener socket will not
* accept any connections unless this callback is set.
*
* SCB_READ
* Called when data is available for reading. The void * parameter,
* cast to uint32, indicates the number of bytes available for reading.
* If some, but not all, of the data is read by the routine (using
* sread(), sgetc(), etc.), the remainder will be kept in the read
* buffer and the callback will be called again immediately.
*
* SCB_READLINE
* Like SCB_READ, called when data is available for reading; however,
* this callback is only called when at least one full line of data is
* available for reading. The void * parameter, cast to uint32,
* indicates the number of bytes available for reading. If both
* SCB_READ and SCB_READLINE are set, SCB_READ will be called first,
* and if it leaves any data (including a newline) in the buffer,
* SCB_READLINE will then be called. Likewise, if SCB_READLINE leaves
* data in the buffer--which may include a partial line, if a
* fractional number of lines was received--SCB_READ will be called
* immediately following.
*
* SCB_TRIGGER
* Called when a "write trigger" is encountered. These triggers are
* set with swrite_trigger(), and are called when all data written to
* the socket before the swrite_trigger() call has been sent to the
* remote host, but before any data written after the trigger is sent.
* The void * parameter is the parameter passed to swrite_trigger().
*/
/*************************************************************************/
/* Minimum (also initial) buffer size for socket; also serves as the
* increment for buffer expansion. */
#define SOCK_MIN_BUFSIZE 4096
/* Structure for socket data. This structure is not actually defined here
* in order to hide it from the user. */
struct socket_;
/* Typedef for socket structure. */
typedef struct socket_ Socket;
/* Type of socket callback functions. */
typedef void (*SocketCallback)(Socket *s, void *param);
/* Identifiers for callback functions (used with sock_setcb()). */
typedef enum {
SCB_CONNECT = 1,
SCB_DISCONNECT,
SCB_ACCEPT,
SCB_READ,
SCB_READLINE,
SCB_TRIGGER,
} SocketCallbackID;
/* Values of parameter to disconnect callback. */
#define DISCONN_LOCAL ((void *)1) /* disconn() function called */
#define DISCONN_REMOTE ((void *)2) /* Transmission error */
#define DISCONN_CONNFAIL ((void *)3) /* Connection attempt failed */
/*************************************************************************/
extern void sock_set_buflimits(uint32 per_conn, uint32 total);
extern void sock_set_rto(int msec);
extern Socket *sock_new(void);
extern void sock_free(Socket *s);
extern void sock_setcb(Socket *s, SocketCallbackID which, SocketCallback func);
extern int sock_isconn(const Socket *s);
extern int sock_remote(const Socket *s, struct sockaddr *sa, int *lenptr);
extern void sock_set_blocking(Socket *s, int blocking);
extern int sock_get_blocking(const Socket *s);
extern void sock_set_wto(Socket *s, int seconds);
extern void sock_mute(Socket *s);
extern void sock_unmute(Socket *s);
extern uint32 read_buffer_len(const Socket *s);
extern uint32 write_buffer_len(const Socket *s);
extern int sock_rwstat(const Socket *s, uint64 *read_ret, uint64 *written_ret);
extern int sock_bufstat(const Socket *s, uint32 *socksize_ret,
uint32 *totalsize_ret, int *ratio1_ret,
int *ratio2_ret);
extern void check_sockets(void);
extern int conn(Socket *s, const char *host, int port, const char *lhost,
int lport);
extern int disconn(Socket *s);
extern int open_listener(Socket *s, const char *host, int port, int backlog);
extern int close_listener(Socket *s);
extern int32 sread(Socket *s, char *buf, int32 len);
extern int32 swrite(Socket *s, const char *buf, int32 len);
extern int32 swritemap(Socket *s, const char *buf, int32 len);
extern int swrite_trigger(Socket *s, void *param);
extern int sgetc(Socket *s);
extern char *sgets(char *buf, int32 len, Socket *s);
extern char *sgets2(char *buf, int32 len, Socket *s);
extern int sputs(const char *str, Socket *s);
extern int sockprintf(Socket *s, const char *fmt,...);
extern int vsockprintf(Socket *s, const char *fmt, va_list args);
/*************************************************************************/
#endif /* SOCKETS_H */
/*
* Local variables:
* c-file-style: "stroustrup"
* c-file-offsets: ((case-label . *) (statement-case-intro . *))
* indent-tabs-mode: nil
* End:
*
* vim: expandtab shiftwidth=4:
*/

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/* Routines for time-delayed actions.
*
* IRC Services is copyright (c) 1996-2009 Andrew Church.
* E-mail: <achurch@achurch.org>
* Parts written by Andrew Kempe and others.
* This program is free but copyrighted software; see the file GPL.txt for
* details.
*/
#include "services.h"
#define IN_TIMEOUT_C
#include "timeout.h"
/*************************************************************************/
static Timeout *timeouts = NULL;
static int checking_timeouts = 0;
/*************************************************************************/
#ifdef DEBUG_COMMANDS
/* Send the timeout list to the given user. */
void send_timeout_list(User *u)
{
Timeout *to;
uint32 now = time_msec();
notice(ServerName, u->nick, "Now: %u.%03u", now/1000, now%1000);
LIST_FOREACH (to, timeouts) {
notice(ServerName, u->nick, "%p: %u.%03u: %p (%p)",
to, to->timeout/1000, to->timeout%1000, to->code, to->data);
}
}
#endif /* DEBUG_COMMANDS */
/*************************************************************************/
/* Check the timeout list for any pending actions. */
void check_timeouts(void)
{
Timeout *to, *to2;
uint32 now = time_msec();
if (checking_timeouts)
fatal("check_timeouts() called recursively!");
checking_timeouts = 1;
log_debug(2, "Checking timeouts at time_msec = %u.%03u",
now/1000, now%1000);
LIST_FOREACH_SAFE (to, timeouts, to2) {
if (to->timeout) {
if ((int32)(to->timeout - now) > 0)
continue;
log_debug(3, "Running timeout %p (code=%p repeat=%d)",
to, to->code, to->repeat);
to->code(to);
if (to->repeat) {
to->timeout = now + to->repeat;
if (!to->timeout) /* watch out for zero! */
to->timeout++;
continue;
}
}
LIST_REMOVE(to, timeouts);
free(to);
}
log_debug(2, "Finished timeout list");
checking_timeouts = 0;
}
/*************************************************************************/
/* Add a timeout to the list to be triggered in `delay' seconds. If
* `repeat' is nonzero, do not delete the timeout after it is triggered.
* This must maintain the property that timeouts added from within a
* timeout routine do not get checked during that run of the timeout list.
*/
Timeout *add_timeout(int delay, void (*code)(Timeout *), int repeat)
{
if (delay < 0) {
log("add_timeout(): called with a negative delay! (%d)", delay);
return NULL;
}
if (!code) {
log("add_timeout(): called with code==NULL!");
return NULL;
}
if (delay > 2147483) { /* 2^31/1000 (watch out for difference overflow) */
log("add_timeout(): delay (%ds) too long, shortening to 2147483s",
delay);
delay = 2147483;
}
return add_timeout_ms((uint32)delay*1000, code, repeat);
}
/*************************************************************************/
/* The same thing, but using milliseconds instead of seconds. */
Timeout *add_timeout_ms(uint32 delay, void (*code)(Timeout *), int repeat)
{
Timeout *t;
if (!code) {
log("add_timeout_ms(): called with code==NULL!");
return NULL;
}
if (delay > 2147483647) {
log("add_timeout_ms(): delay (%dms) too long, shortening to"
" 2147483647ms", delay);
delay = 2147483647;
}
t = malloc(sizeof(Timeout));
if (!t)
return NULL;
t->settime = time(NULL);
t->timeout = time_msec() + delay;
/* t->timeout==0 is used to signal that the timeout should be deleted;
* if the timeout value just happens to wrap around to 0, lengthen it
* by a millisecond. */
if (!t->timeout)
t->timeout++;
t->code = code;
t->data = NULL;
t->repeat = repeat ? delay : 0;
LIST_INSERT(t, timeouts);
return t;
}
/*************************************************************************/
/* Remove a timeout from the list (if it's there). */
void del_timeout(Timeout *t)
{
Timeout *ptr;
if (!t) {
log("del_timeout(): called with t==NULL!");
return;
}
LIST_FOREACH (ptr, timeouts) {
if (ptr == t)
break;
}
if (!ptr) {
log("del_timeout(): attempted to remove timeout %p (not on list)", t);
return;
}
if (checking_timeouts) {
t->timeout = 0; /* delete it when we hit it in the list */
return;
}
LIST_REMOVE(t, timeouts);
free(t);
}
/*************************************************************************/
/*
* Local variables:
* c-file-style: "stroustrup"
* c-file-offsets: ((case-label . *) (statement-case-intro . *))
* indent-tabs-mode: nil
* End:
*
* vim: expandtab shiftwidth=4:
*/

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/* Time-delay routine include stuff.
*
* IRC Services is copyright (c) 1996-2009 Andrew Church.
* E-mail: <achurch@achurch.org>
* Parts written by Andrew Kempe and others.
* This program is free but copyrighted software; see the file GPL.txt for
* details.
*/
#ifndef TIMEOUT_H
#define TIMEOUT_H
#include <time.h>
/*************************************************************************/
/* Timeout type. */
typedef struct timeout_ Timeout;
struct timeout_ {
void *data; /* Caller data; can be anything */
time_t settime; /* Time timer was set (from time()) */
/* Remainder is PRIVATE DATA! */
#ifdef IN_TIMEOUT_C
Timeout *next, *prev;
uint32 timeout; /* In milliseconds (time_msec()) */
uint32 repeat; /* Does this timeout repeat indefinitely?
* (if nonzero, new value of `timeout') */
void (*code)(Timeout *); /* This structure is passed to the code */
#endif
};
/*************************************************************************/
/* Check the timeout list for any pending actions. */
extern void check_timeouts(void);
/* Add a timeout to the list to be triggered in `delay' seconds (`delay'
* may be zero). Any timeout added from within a timeout routine will not
* be checked during that run through the timeout list. Always succeeds. */
extern Timeout *add_timeout(int delay, void (*code)(Timeout *), int repeat);
/* Add a timeout to the list to be triggered in `delay' milliseconds
* (`delay' may be zero). */
extern Timeout *add_timeout_ms(uint32 delay, void (*code)(Timeout *),
int repeat);
/* Remove a timeout from the list (if it's there). */
extern void del_timeout(Timeout *t);
#ifdef DEBUG_COMMANDS
/* Send the list of timeouts to the given user. */
extern void send_timeout_list(User *u);
#endif
/*************************************************************************/
#endif /* TIMEOUT_H */
/*
* Local variables:
* c-file-style: "stroustrup"
* c-file-offsets: ((case-label . *) (statement-case-intro . *))
* indent-tabs-mode: nil
* End:
*
* vim: expandtab shiftwidth=4:
*/

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/* Routines to maintain a list of online users.
*
* IRC Services is copyright (c) 1996-2009 Andrew Church.
* E-mail: <achurch@achurch.org>
* Parts written by Andrew Kempe and others.
* This program is free but copyrighted software; see the file GPL.txt for
* details.
*/
#include "services.h"
#include "modules.h"
/*************************************************************************/
/* Maximum number of tries to randomly select a new guest nick when the
* first one chosen is in use before giving up.
*/
#define MAKEGUESTNICK_TRIES 1000
/*************************************************************************/
#define add_user static add_user
#define del_user static del_user
#include "hash.h"
DEFINE_HASH(user, User, nick)
#undef add_user
#undef del_user
int32 usercnt = 0, opcnt = 0;
static int cb_check = -1;
static int cb_create = -1;
static int cb_servicestamp_change = -1;
static int cb_nickchange1 = -1;
static int cb_nickchange2 = -1;
static int cb_delete = -1;
static int cb_mode = -1;
static int cb_chan_part = -1;
static int cb_chan_kick = -1;
/*************************************************************************/
int user_init(int ac, char **av)
{
cb_check = register_callback("user check");
cb_create = register_callback("user create");
cb_servicestamp_change = register_callback("user servicestamp change");
cb_nickchange1 = register_callback("user nickchange (before)");
cb_nickchange2 = register_callback("user nickchange (after)");
cb_delete = register_callback("user delete");
cb_mode = register_callback("user MODE");
cb_chan_part = register_callback("channel PART");
cb_chan_kick = register_callback("channel KICK");
if (cb_check < 0 || cb_create < 0 || cb_servicestamp_change < 0
|| cb_nickchange1 < 0 || cb_nickchange2 < 0 || cb_delete < 0
|| cb_mode < 0 || cb_chan_part < 0 || cb_chan_kick < 0
) {
log("user_init: register_callback() failed\n");
return 0;
}
return 1;
}
/*************************************************************************/
void user_cleanup(void)
{
User *u;
for (u = first_user(); u; u = next_user())
del_user(u);
unregister_callback(cb_chan_kick);
unregister_callback(cb_chan_part);
unregister_callback(cb_mode);
unregister_callback(cb_delete);
unregister_callback(cb_nickchange2);
unregister_callback(cb_nickchange1);
unregister_callback(cb_servicestamp_change);
unregister_callback(cb_create);
unregister_callback(cb_check);
}
/*************************************************************************/
/************************* User list management **************************/
/*************************************************************************/
/* Allocate a new User structure, fill in basic values, link it to the
* overall list, and return it. Always successful.
*/
static User *new_user(const char *nick)
{
User *user;
user = scalloc(sizeof(User), 1);
if (!nick)
nick = "";
strbcpy(user->nick, nick);
add_user(user);
usercnt++;
return user;
}
/*************************************************************************/
/* Change the nickname of a user, and move pointers as necessary. */
static void change_user_nick(User *user, const char *nick)
{
del_user(user);
strbcpy(user->nick, nick);
add_user(user);
}
/*************************************************************************/
/* Remove and free a User structure. */
static void delete_user(User *user)
{
struct u_chanlist *c, *c2;
struct u_chaninfolist *ci, *ci2;
usercnt--;
if (is_oper(user))
opcnt--;
free(user->username);
free(user->host);
free(user->ipaddr);
free(user->realname);
free(user->fakehost);
free(user->id_nicks);
LIST_FOREACH_SAFE (c, user->chans, c2) {
chan_deluser(user, c->chan);
free(c);
}
LIST_FOREACH_SAFE (ci, user->id_chans, ci2)
free(ci);
#define next snext
#define prev sprev
if (user->server)
LIST_REMOVE(user, user->server->userlist);
#undef next
#undef prev
del_user(user);
free(user);
}
/*************************************************************************/
/*************************************************************************/
/* Remove a user on QUIT/KILL. Calls the user delete callback and then
* deletes the User structure.
*/
void quit_user(User *user, const char *quitmsg, int is_kill)
{
call_callback_3(cb_delete, user, quitmsg, is_kill);
delete_user(user);
}
/*************************************************************************/
/* Return statistics. Pointers are assumed to be valid. */
void get_user_stats(long *nusers, long *memuse)
{
long count = 0, mem = 0;
User *user;
struct u_chanlist *uc;
struct u_chaninfolist *uci;
for (user = first_user(); user; user = next_user()) {
count++;
mem += sizeof(*user);
if (user->username)
mem += strlen(user->username)+1;
if (user->host)
mem += strlen(user->host)+1;
if (user->realname)
mem += strlen(user->realname)+1;
LIST_FOREACH (uc, user->chans)
mem += sizeof(*uc);
LIST_FOREACH (uci, user->id_chans)
mem += sizeof(*uci);
}
*nusers = count;
*memuse = mem;
}
/*************************************************************************/
/************************* Internal routines *****************************/
/*************************************************************************/
/* Part a user from a channel given the user's u_chanlist entry for the
* channel. */
static void part_channel_uc(User *user, struct u_chanlist *uc, int callback,
const char *param, const char *source)
{
call_callback_4(callback, uc->chan, user, param, source);
chan_deluser(user, uc->chan);
LIST_REMOVE(uc, user->chans);
free(uc);
}
/*************************************************************************/
/************************* Message handlers ******************************/
/*************************************************************************/
/* Handle a server NICK command. Parameters must be in the following order.
* av[0] = nick
* If a new user:
* av[1] = hop count
* av[2] = signon time
* av[3] = username
* av[4] = hostname
* av[5] = server
* av[6] = real name
* av[7] = services stamp (if ac >= 8; NULL if none)
* av[8] = IP address (if ac >= 9; NULL if unknown)
* av[9] = user modes (lf ac >= 10; NULL if unknown.
* Leading + optional)
* av[10..] available for protocol module use
* Else:
* av[1] = time of change
* Return 1 if message was accepted, 0 if rejected (AKILL/session limit).
*/
int do_nick(const char *source, int ac, char **av)
{
User *user;
if (!*source) {
/* This is a new user; create a User structure for it. */
int reconnect = 0; /* Is user reconnecting after a split? */
log_debug(1, "new user: %s", av[0]);
/* We used to ignore the ~ which a lot of ircd's use to indicate no
* identd response. That caused channel bans to break, so now we
* just take what the server gives us. People are still encouraged
* to read the RFCs and stop doing anything to usernames depending
* on the result of an identd lookup. */
/* First check whether the user should be allowed on. */
if (call_callback_2(cb_check, ac, av))
return 0;
/* User was accepted; allocate User structure and fill it in. */
user = new_user(av[0]);
user->my_signon = time(NULL);
user->signon = strtotime(av[2], NULL);
user->username = sstrdup(av[3]);
user->host = sstrdup(av[4]);
user->server = get_server(av[5]);
user->realname = sstrdup(av[6]);
if (ac >= 8 && av[7]) {
user->servicestamp = strtoul(av[7], NULL, 10);
reconnect = (user->servicestamp != 0);
} else {
user->servicestamp = (uint32)user->signon;
/* Unfortunately, we have no way to tell whether the user is
* new or not */
}
if (ac >= 9 && av[8])
user->ipaddr = sstrdup(av[8]);
else
user->ipaddr = NULL;
#define next snext
#define prev sprev
if (user->server)
LIST_INSERT(user, user->server->userlist);
#undef next
#undef prev
ignore_init(user);
call_callback_4(cb_create, user, ac, av, reconnect);
if (ac >= 8 && av[7] && !user->servicestamp) {
/* A servicestamp was provided, but it was zero, so assign one.
* Note that we use a random value for the initial Services
* stamp instead of the current time for the following reason:
*
* Suppose you have a network with an average of more than one
* new user per second; for the sake of argument, assume there
* are an average of 1.3 new users per second. If the initial
* Services stamp is T, the current time, then in 100 seconds
* (i.e. at T+100) the Services stamp will have gone to T+130.
* (In reality, it would jump much higher on the initial net
* burst when no users have Services stamps, but that does not
* affect this argument.)
*
* If Services is now restarted, clearing the last used stamp
* value, then assuming 5 seconds for restart, Services will
* receive a network burst at T+105. However! While most of
* the users will already have Services stamps, any new users
* (as well as any users which connect after the network burst)
* will be assigned new Services stamps starting with the
* default value of the current time, in this case T+105. But
* other users _already_ have Services stamp values in the
* range T+105 to T+130 from the previous run--thus you have
* Services stamp collisions, and all the security problems
* that go with them.
*
* Obviously, this possibility does not disappear entirely by
* using a random initial value, but it becomes much more
* unlikely.
*
* Note that Unreal 3.1.1 (at least) upper-bounds values at
* 2^31-1, so we limit ourselves to 31 bits here, even though
* our field is unsigned.
*/
static int32 servstamp = 0;
if (servstamp == 0)
servstamp = (rand() & 0x7FFFFFFF) | 1;
user->servicestamp = servstamp++;
if (servstamp <= 0)
servstamp = 1;
call_callback_1(cb_servicestamp_change, user);
}
if (ac >= 10 && av[9] && *av[9]) {
/* Apply modes supplied in av[9]. Current protocol modules all
* include a '+' before the mode letters, but allow strings
* without the '+' for robustness. */
char buf[BUFSIZE];
char *newav[2];
newav[0] = user->nick;
if (*av[9] == '+') {
newav[1] = av[9];
} else {
snprintf(buf, sizeof(buf), "+%s", av[9]);
newav[1] = buf;
}
do_umode(user->nick, 2, newav);
}
} else {
/* An old user changing nicks. */
char oldnick[NICKMAX];
user = get_user(source);
if (!user) {
log_debug(1, "user: NICK from nonexistent nick %s: %s",
source, merge_args(ac, av));
return 0;
}
log_debug(1, "%s changes nick to %s", source, av[0]);
strbcpy(oldnick, user->nick);
call_callback_2(cb_nickchange1, user, av[0]);
/* Flush out all mode changes; necessary to avoid desynch (otherwise
* we can't find the user when the mode goes out later). The IRC
* servers will take care of translating the old nick to the new one */
set_cmode(NULL, NULL);
change_user_nick(user, av[0]);
call_callback_2(cb_nickchange2, user, oldnick);
}
return 1;
}
/*************************************************************************/
/* Handle a JOIN command.
* av[0] = channels to join
*/
void do_join(const char *source, int ac, char **av)
{
User *user;
char *s, *t;
user = get_user(source);
if (!user) {
log_debug(1, "user: JOIN from nonexistent user %s: %s",
source, merge_args(ac, av));
return;
}
t = av[0];
while (*(s=t)) {
t = s + strcspn(s, ",");
if (*t)
*t++ = 0;
log_debug(1, "%s joins %s", source, s);
if (*s == '0')
part_all_channels(user);
else
join_channel(user, s, 0);
}
}
/*************************************************************************/
/* Handle a PART command.
* av[0] = channels to leave
* av[1] = reason (optional)
*/
void do_part(const char *source, int ac, char **av)
{
User *user;
char *s, *t;
user = get_user(source);
if (!user) {
log_debug(1, "user: PART from nonexistent user %s: %s",
source, merge_args(ac, av));
return;
}
t = av[0];
while (*(s=t)) {
t = s + strcspn(s, ",");
if (*t)
*t++ = 0;
log_debug(1, "%s leaves %s", source, s);
if (!part_channel(user, s, cb_chan_part, av[1], source)) {
log("user: do_part: no channel record for %s on %s (bug?)",
user->nick, av[0]);
}
}
}
/*************************************************************************/
/* Handle a KICK command.
* av[0] = channel
* av[1] = nick(s) being kicked
* av[2] = reason
* When called internally to remove a single user (no "," in av[1]) from a
* channel, callers may assume that the contents of the argument strings
* will not be modified.
*/
void do_kick(const char *source, int ac, char **av)
{
User *user;
char *s, *t;
t = av[1];
while (*(s=t)) {
t = s + strcspn(s, ",");
if (*t)
*t++ = 0;
user = get_user(s);
if (!user) {
log_debug(1, "user: KICK for nonexistent user %s on %s: %s",
s, av[0], merge_args(ac-2, av+2));
continue;
}
log_debug(1, "kicking %s from %s", s, av[0]);
if (!part_channel(user, av[0], cb_chan_kick, av[2], source)) {
log("user: do_kick: no channel record for %s on %s (bug?)",
user->nick, av[0]);
}
}
}
/*************************************************************************/
/* Handle a MODE command for a user.
* av[0] = nick to change mode for
* av[1] = modes
*/
void do_umode(const char *source, int ac, char **av)
{
User *user;
char *modestr, *s;
int add = 1; /* 1 if adding modes, 0 if deleting */
user = get_user(av[0]);
if (!user) {
log_debug(1, "user: MODE %s for nonexistent nick %s from %s: %s",
av[1], av[0], source, merge_args(ac, av));
return;
}
log_debug(1, "Changing mode for %s to %s", av[0], av[1]);
modestr = s = av[1];
av += 2;
ac -= 2;
while (*s) {
char modechar = *s++;
int32 flag;
int params;
if (modechar == '+') {
add = 1;
continue;
} else if (modechar == '-') {
add = 0;
continue;
} else if (add < 0) {
continue;
}
flag = mode_char_to_flag(modechar, MODE_USER);
if (!flag)
continue;
if (flag == MODE_INVALID)
flag = 0;
params = mode_char_to_params(modechar, MODE_USER);
params = (params >> (add*8)) & 0xFF;
if (ac < params) {
log("user: MODE %s %s: missing parameter(s) for %c%c",
user->nick, modestr, add ? '+' : '-', modechar);
break;
}
if (call_callback_4(cb_mode, user, modechar, add, av) <= 0) {
if (modechar == 'o') {
if (add)
opcnt++;
else
opcnt--;
}
if (add)
user->mode |= flag;
else
user->mode &= ~flag;
}
av += params;
ac -= params;
}
}
/*************************************************************************/
/* Handle a QUIT command.
* av[0] = reason
* When called internally, callers may assume that the contents of the
* argument string will not be modified.
*/
void do_quit(const char *source, int ac, char **av)
{
User *user;
user = get_user(source);
if (!user) {
log_debug(1, "user: QUIT from nonexistent user %s: %s",
source, merge_args(ac, av));
return;
}
log_debug(1, "%s quits", source);
quit_user(user, av[0], 0);
}
/*************************************************************************/
/* Handle a KILL command.
* av[0] = nick being killed
* av[1] = reason
* When called internally, callers may assume that the contents of the
* argument strings will not be modified.
*/
void do_kill(const char *source, int ac, char **av)
{
User *user;
user = get_user(av[0]);
if (!user)
return;
log_debug(1, "%s killed", av[0]);
quit_user(user, av[1], 1);
}
/*************************************************************************/
/*************************************************************************/
/* Join a user to a channel. Return a pointer to the channel record if the
* join succeeded, NULL otherwise.
*/
Channel *join_channel(User *user, const char *channel, int32 modes)
{
Channel *c = chan_adduser(user, channel, modes);
struct u_chanlist *uc;
if (!c)
return NULL;
uc = smalloc(sizeof(*uc));
LIST_INSERT(uc, user->chans);
uc->chan = c;
return c;
}
/*************************************************************************/
/* Part a user from a channel. */
int part_channel(User *user, const char *channel, int callback,
const char *param, const char *source)
{
struct u_chanlist *uc;
LIST_SEARCH(user->chans, chan->name, channel, irc_stricmp, uc);
if (uc)
part_channel_uc(user, uc, callback, param, source);
return uc != NULL;
}
/*************************************************************************/
/* Part a user from all channels s/he is in. Assumes cb_chan_part, an
* empty `param' string, and the user as source. */
void part_all_channels(User *user)
{
struct u_chanlist *uc, *nextuc;
LIST_FOREACH_SAFE (uc, user->chans, nextuc)
part_channel_uc(user, uc, cb_chan_part, "", user->nick);
}
/*************************************************************************/
/*************************************************************************/
/* Various check functions. All of these return false/NULL if any
* parameter is NULL. */
/*************************************************************************/
/* Is the given user an oper? */
int is_oper(const User *user)
{
return user != NULL && (user->mode & UMODE_o);
}
/*************************************************************************/
/* Is the given user on the given channel? Return the Channel * for the
* channel if so, NULL if not.
*/
Channel *is_on_chan(const User *user, const char *chan)
{
struct u_chanlist *c;
if (!user || !chan)
return NULL;
LIST_SEARCH(user->chans, chan->name, chan, irc_stricmp, c);
return c ? c->chan : NULL;
}
/*************************************************************************/
/* Is the given user a channel operator on the given channel? */
int is_chanop(const User *user, const char *chan)
{
Channel *c = chan ? get_channel(chan) : NULL;
struct c_userlist *cu;
if (!user || !chan || !c)
return 0;
LIST_SEARCH(c->users, user->nick, user->nick, irc_stricmp, cu);
return cu != NULL && (cu->mode & CUMODE_o) != 0;
}
/*************************************************************************/
/* Is the given user voiced (channel mode +v) on the given channel? */
int is_voiced(const User *user, const char *chan)
{
Channel *c = chan ? get_channel(chan) : NULL;
struct c_userlist *cu;
if (!user || !chan || !c)
return 0;
LIST_SEARCH(c->users, user->nick, user->nick, irc_stricmp, cu);
return cu != NULL && (cu->mode & CUMODE_v) != 0;
}
/*************************************************************************/
/*************************************************************************/
/* Does the user's usermask match the given mask? The mask may be in
* either nick!user@host or just user@host form. When "fakehosts" or IP
* addresses are available in the user record, they are also checked
* against the "host" part of the mask, and a match by any field (real
* host, fakehost, or IP address) is treated as a match for the host part.
* Note that CIDR matching on IP addresses is _not_ performed.
*/
int match_usermask(const char *mask, const User *user)
{
char *mask2;
char *nick, *username, *host;
int match_user, match_host, result;
if (!mask || !user) {
log_debug(1, "match_usermask: NULL %s!", !mask ? "mask" : "user");
return 0;
}
mask2 = sstrdup(mask);
if (strchr(mask2, '!')) {
nick = strtok(mask2, "!");
username = strtok(NULL, "@");
} else {
nick = NULL;
username = strtok(mask2, "@");
}
host = strtok(NULL, "");
if (!host) {
free(mask2);
return 0;
}
match_user = match_wild_nocase(username, user->username);
match_host = match_wild_nocase(host, user->host);
if (user->fakehost)
match_host |= match_wild_nocase(host, user->fakehost);
if (user->ipaddr)
match_host |= match_wild_nocase(host, user->ipaddr);
if (nick) {
result = match_wild_nocase(nick, user->nick) &&
match_user && match_host;
} else {
result = match_user && match_host;
}
free(mask2);
return result;
}
/*************************************************************************/
/* Split a usermask up into its constitutent parts. Returned strings are
* malloc()'d, and should be free()'d when done with. Returns "*" for
* missing parts. Assumes `mask' is a non-empty string.
*/
void split_usermask(const char *mask, char **nick, char **user, char **host)
{
char *mask2 = sstrdup(mask);
char *mynick, *myuser, *myhost;
mynick = mask2;
myuser = strchr(mask2, '!');
myhost = myuser ? strchr(myuser, '@') : NULL;
if (myuser)
*myuser++ = 0;
if (myhost)
*myhost++ = 0;
/* Handle special case: mask == user@host */
if (mynick && !myuser && strchr(mynick, '@')) {
mynick = NULL;
myuser = mask2;
myhost = strchr(mask2, '@');
if (myhost) /* Paranoia */
*myhost++ = 0;
}
if (!mynick || !*mynick)
mynick = (char *)"*";
if (!myuser || !*myuser)
myuser = (char *)"*";
if (!myhost || !*myhost)
myhost = (char *)"*";
*nick = sstrdup(mynick);
*user = sstrdup(myuser);
*host = sstrdup(myhost);
free(mask2);
}
/*************************************************************************/
/* Given a user, return a mask that will most likely match any address the
* user will have from that location. For IP addresses, wildcards the last
* octet of the address (e.g. 10.1.1.1 -> 10.1.1.*); for named addresses,
* wildcards the leftmost part of the name unless the name only contains
* two parts. The returned character string is malloc'd and should be
* free'd when done with.
*
* Where supported, uses the fake host instead of the real one if
* use_fakehost is nonzero.
*/
char *create_mask(const User *user, int use_fakehost)
{
char *mask, *s, *end, *host;
host = user->host;
if (use_fakehost && user->fakehost)
host = user->fakehost;
/* Get us a buffer the size of the username plus hostname. The result
* will never be longer than this (and will often be shorter), thus we
* can use strcpy() and sprintf() safely.
*/
end = mask = smalloc(strlen(user->username) + strlen(host) + 2);
end += sprintf(end, "%s@", user->username);
if (strspn(host, "0123456789.") == strlen(host)
&& (s = strchr(host, '.'))
&& (s = strchr(s+1, '.'))
&& (s = strchr(s+1, '.'))
&& ( !strchr(s+1, '.'))) { /* IP addr */
s = sstrdup(host);
*strrchr(s, '.') = 0;
sprintf(end, "%s.*", s);
free(s);
} else {
if ((s = strchr(host+1, '.')) && strchr(s+1, '.')) {
s = sstrdup(s-1);
*s = '*';
} else {
s = sstrdup(host);
}
strcpy(end, s); /* safe: see above */
free(s);
}
return mask;
}
/*************************************************************************/
/*************************************************************************/
/* Create a new guest nick using GuestNickPrefix and a unique series of
* digits, and return it. The returned nick is stored in a static buffer
* and will be overwritten at the next call.
*
* At present, we simply use a rollover counter attached to the nick,
* initialized to a random value. This provides for uniqueness as long as
* Services is not restarted and a reasonable chance of uniqueness even
* when Services is restarted (unless you have a long prefix and a short
* maximum nick length; however, this routine will make sure at least 4
* digits are available, possibly by shortening the prefix).
*
* Note that initializing the counter based on the current time would be a
* bad idea, since if more than one user per second (on average) connected
* to the network, duplicate nicks would be almost guaranteed if Services
* restarted.
*/
char *make_guest_nick(void)
{
static char nickbuf[NICKMAX+1]; /* +1 to check for overrun */
static uint32 counter = 0; /* Unique suffix counter */
int tries; /* Tries to find an unused nick */
int prefixlen; /* Length of nick prefix */
uint32 suffixmod; /* Modulo for suffix counter */
int i;
/* Sanity checks on nick prefix length */
prefixlen = strlen(GuestNickPrefix);
if (protocol_nickmax <= 4) {
/* This violates RFC1459 as well as common sense, so just blow
* ourselves out of the water. */
fatal("make_guest_nick(): protocol_nickmax too small (%d)",
protocol_nickmax);
} else if (prefixlen+4 > protocol_nickmax) {
/* Reserve at least 4 digits for the suffix */
prefixlen = protocol_nickmax-4;
log("warning: make_guest_nick(): GuestNickPrefix too long,"
" shortening to %d characters", prefixlen);
GuestNickPrefix[prefixlen] = 0;
}
/* Calculate number of digits available for suffix -> suffix modulo */
i = protocol_nickmax - prefixlen;
if (i < 10) {
suffixmod = 1;
while (i-- > 0)
suffixmod *= 10;
} else {
suffixmod = 0; /* no modulo */
}
/* Actually generate the nick. If the nick already exists, generate a
* new one, and repeat until finding an unused nick or trying too many
* times. If we try too many times, we just kill the last one we end
* up with. */
tries = 0;
for (;;) {
if (counter == 0) /* initialize to random the first time */
counter = rand();
if (suffixmod) /* strip down to right number of digits */
counter %= suffixmod;
if (counter == 0) /* if rand() gave us 0 or N*suffixmod... */
counter = 1; /* ... use 1 instead */
i = snprintf(nickbuf, sizeof(nickbuf), "%s%u", GuestNickPrefix, counter);
if (i > protocol_nickmax) {
log("BUG: make_guest_nick() generated %s but nickmax == %d!",
nickbuf, protocol_nickmax);
nickbuf[protocol_nickmax] = 0;
}
if (!get_user(nickbuf)) /* done if user not found */
break;
/* Increment try count, and break out if it's too much */
if (++tries >= MAKEGUESTNICK_TRIES) {
kill_user(NULL, nickbuf, "Guest nicks may not be used");
break;
}
/* Reset counter to 0 to use a new random number */
counter = 0;
}
/* Increment the unique suffix counter modulo suffixmod, and avoid 0
* (which would cause a reset to a random value) */
counter++;
if (counter == suffixmod) /* because suffixmod==0 if no modulo */
counter = 1;
/* Return the nick */
return nickbuf;
};
/*************************************************************************/
/* Return nonzero if the given nickname can potentially be a guest nickname
* (i.e. a nickname that could be generated by make_guest_nick()), zero if
* not. Currently this means a nickname consisting of GuestNickPrefix
* followed by between 1 and 10 digits inclusive.
*/
int is_guest_nick(const char *nick)
{
int prefixlen = strlen(GuestNickPrefix);
int nicklen = strlen(nick);
return nicklen >= prefixlen+1 && nicklen <= prefixlen+10
&& irc_strnicmp(nick, GuestNickPrefix, prefixlen) == 0
&& strspn(nick+prefixlen, "1234567890") == nicklen-prefixlen;
}
/*************************************************************************/
/*
* Local variables:
* c-file-style: "stroustrup"
* c-file-offsets: ((case-label . *) (statement-case-intro . *))
* indent-tabs-mode: nil
* End:
*
* vim: expandtab shiftwidth=4:
*/

82
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/* Online user data structure.
*
* IRC Services is copyright (c) 1996-2009 Andrew Church.
* E-mail: <achurch@achurch.org>
* Parts written by Andrew Kempe and others.
* This program is free but copyrighted software; see the file GPL.txt for
* details.
*/
#ifndef USERS_H
#define USERS_H
/*************************************************************************/
struct user_ {
User *next, *prev;
User *snext,*sprev; /* Next/previous for the user's server
* (unordered) */
char nick[NICKMAX];
NickInfo *ni; /* NickInfo for this nick */
NickGroupInfo *ngi; /* NickGroupInfo for this nick; guaranteed
* valid if `ni' is non-NULL */
Server *server; /* Server user is on */
char *username;
char *host; /* User's hostname */
char *realname;
char *fakehost; /* Hostname seen by other users */
char *ipaddr; /* User's IP address in string form (takes
* more memory but saves CPU work and
* gives free compatibility with IPv6) */
time_t signon; /* Timestamp sent (from remote server) with
* user when they connected */
time_t my_signon; /* Our local timestamp when the user
* connected */
uint32 servicestamp; /* ID value for user; used in split recovery */
int32 mode; /* UMODE_* user modes */
int16 flags; /* UF_* status flags */
double ignore; /* Ignore level */
uint32 lastcmd; /* Time of last command, from time_msec() */
time_t lastcmd_s; /* Same from time(), to check rollover */
int16 bad_pw_count; /* # of invalid password attempts */
time_t bad_pw_time; /* Time of last invalid password */
time_t lastmemosend; /* Last time MS SEND command used */
time_t lastmemofwd; /* Last time MS FORWARD command used */
time_t lastnickreg; /* Last time NS REGISTER command used */
time_t last_nick_set_email; /* Last time NS SET EMAIL command used */
uint32 *id_nicks;
int id_nicks_count;
struct u_chanlist { /* Channels user has joined */
struct u_chanlist *next, *prev;
Channel *chan;
} *chans;
struct u_chaninfolist { /* Channels user has identified for */
struct u_chaninfolist *next, *prev;
char chan[CHANMAX];
} *id_chans;
};
/* Status flags: */
#define UF_SERVROOT 0x0001 /* User has Services root privileges */
/*************************************************************************/
#endif /* USERS_H */
/*
* Local variables:
* c-file-style: "stroustrup"
* c-file-offsets: ((case-label . *) (statement-case-intro . *))
* indent-tabs-mode: nil
* End:
*
* vim: expandtab shiftwidth=4:
*/

23
version.h Normal file
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/* External declarations for version.c.
*
* IRC Services is copyright (c) 1996-2009 Andrew Church.
* E-mail: <achurch@achurch.org>
* Parts written by Andrew Kempe and others.
* This program is free but copyrighted software; see the file GPL.txt for
* details.
*/
extern const char program_name[];
extern const char version_number[];
extern const char version_build[];
extern const char *info_text[];
/*
* Local variables:
* c-file-style: "stroustrup"
* c-file-offsets: ((case-label . *) (statement-case-intro . *))
* indent-tabs-mode: nil
* End:
*
* vim: expandtab shiftwidth=4:
*/

80
version.sh Normal file
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@ -0,0 +1,80 @@
#!/bin/sh
#
# Build the version.c file which contains all the version related info and
# needs to be updated on a per-build basis.
# $PROGRAM is the string returned as the first part of a /VERSION reply,
# and must not contain spaces. It is not used anywhere else.
PROGRAM=ircservices
VERSION=5.1.24
# Increment Services build number
if [ -f version.c ]; then
BUILD=`fgrep '#define BUILD' version.c | sed 's/^#define BUILD.*"\([0-9]*\)".*$/\1/'`
BUILD=`expr $BUILD + 1 2>/dev/null`
else
BUILD=1
fi
if [ ! "$BUILD" ]; then
BUILD=1
fi
DATE=`date`
if [ $? -ne "0" ]; then
DATE="\" __DATE__ \" \" __TIME__ \""
fi
cat >version.c <<EOF
/* Version information for IRC Services.
* Note: this file is automatically generated.
*
* IRC Services is copyright (c) 1996-2009 Andrew Church.
* E-mail: <achurch@achurch.org>
* Parts written by Andrew Kempe and others.
* This program is free but copyrighted software; see the file GPL.txt for
* details.
*/
#include "version.h"
#define BUILD "$BUILD"
const char program_name[] = "$PROGRAM";
const char version_number[] = "$VERSION";
const char version_build[] = "build #" BUILD ", compiled $DATE";
/* Look folks, please leave this INFO reply intact and unchanged. If you do
* have the urge to mention yourself, please simply add your name to the list.
* The other people listed below have just as much right, if not more, to be
* mentioned. Leave everything else untouched. Thanks.
*/
const char *info_text[] = {
"IRC Services developed by and copyright (c) 1996-2009",
"Andrew Church <achurch@achurch.org>.",
"Parts written by Andrew Kempe and others.",
"IRC Services may be freely redistributed under the GNU",
"General Public License, version 2 or later.",
" ",
"Many people have contributed to the ongoing development of",
"IRC Services. Particularly noteworthy contributors include:",
" Mauritz Antunes",
" Holger Baust",
" Elijah",
" Yusuf Iskenderoglu",
" Janos Kapitany",
" Jacek Margos",
" Craig McLure",
" Martin Pels",
" Krisztian Romek",
" Alexander Zverev",
"A full list of contributors and their contributions can be",
"found in the manual and the Changes file included in the IRC",
"Services distribution archive. Many thanks to all of them!",
" ",
"For more information and a list of distribution sites,",
"please visit: http://www.ircservices.za.net/",
0
};
EOF

557
vsnprintf.c Normal file
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@ -0,0 +1,557 @@
/* An implementation of vsnprintf() for systems that don't have it.
*
* IRC Services is copyright (c) 1996-2009 Andrew Church.
* E-mail: <achurch@achurch.org>
* Parts written by Andrew Kempe and others.
* This program is free but copyrighted software; see the file GPL.txt for
* details.
*/
#include <stdarg.h>
#include <string.h>
#include <ctype.h>
typedef int
(*_pfmt_writefunc_t)(const char *buf, size_t len, void *arg1, void *arg2);
int my_vsnprintf(char *string, size_t size, const char *format, va_list args);
int my_snprintf(char *string, size_t size, const char *format, ...);
/*************************************************************************/
/* Basic format routine for *printf() interfaces. Takes a writing function
* and two (optional) pointer parameters for that function which are passed
* on unmodified. The function should return the number of bytes written,
* or 0 (not -1!) on write failure.
*/
static int _pfmt(const char *format, va_list args,
_pfmt_writefunc_t writefunc, void *arg1, void *arg2)
{
int total = 0; /* Total bytes written */
const char *startptr;/* Beginning of non-token text in format string.
* Used for writing in bulk instead of
* character-at-a-time. */
int n; /* Bytes written in last writefunc() call */
int valid; /* Was this a valid %-token? */
int alt_form; /* "Alternate form"? (# flag) */
int zero_pad; /* Zero-pad value? */
int left_justify; /* Left-justify? (0 means right-justify) */
int always_sign; /* Always add sign value? */
int insert_blank; /* Insert blank before positive values for %d/%i? */
int width; /* Field width */
int precision; /* Precision */
int argsize; /* Size of argument: 0=normal, 1=short, 2=long,
* 3=long long */
int what; /* What are we working on? 0=flags, 1=width,
* 2=precision, 3=argsize, 4=argtype */
long intval; /* Integer value */
char *strval; /* String value */
void *ptrval; /* Pointer value */
char numbuf[64]; /* Temporary buffer for printing numbers; this MUST
* be large enough to hold the longest possible
* number (size is not checked in processing) */
char *numptr; /* Pointer to start of printed number in `numbuf' */
intval = 0;
strval = NULL;
ptrval = NULL;
startptr = format;
while (*format) {
if (*format != '%') {
format++;
continue;
}
if (startptr != format) {
/* Write out accumulated text */
n = writefunc(startptr, format-startptr, arg1, arg2);
total += n;
/* Abort on short write */
if (n != format-startptr)
break;
/* Point to this token, in case it's a bad one */
startptr = format;
}
/* Begin %-token processing */
valid = 0; /* 1 if valid, -1 if known not valid (syntax error) */
alt_form = 0;
left_justify = 0;
always_sign = 0;
insert_blank = 0;
zero_pad = 0;
width = -1;
precision = -1;
argsize = 0;
what = 0;
while (!valid && *++format) { /* Broken out of by terminal chars */
switch (*format) {
/* Flags */
case '#':
if (what != 0) {
valid = -1;
break;
}
alt_form = 1;
break;
case '-':
if (what != 0) {
valid = -1;
break;
}
left_justify = 1;
break;
case '+':
if (what != 0) {
valid = -1;
break;
}
always_sign = 1;
break;
case ' ':
if (what != 0) {
valid = -1;
break;
}
insert_blank = 1;
break;
case '\'':
/* Comma-grouping by locale; not supported */
valid = -1;
break;
case '0':
if (what == 0) {
zero_pad = 1;
break;
}
/* else fall through */
/* Field widths */
case '1':
case '2':
case '3':
case '4':
case '5':
case '6':
case '7':
case '8':
case '9':
if (what == 0)
what = 1;
else if (what > 2) {
valid = -1;
break;
}
if (what == 1) {
if (width < 0)
width = 0;
width = width*10 + (*format)-'0';
} else {
if (precision < 0)
precision = 0;
precision = precision*10 + (*format)-'0';
}
break;
case '*':
if (what == 0)
what = 1;
else if (what > 2) {
valid = -1;
break;
}
if (what == 1) {
width = va_arg(args, int);
if (width < 0) {
width = -width;
left_justify = 1;
}
} else {
precision = va_arg(args, int);
}
break;
case '.':
if (what >= 2) {
valid = -1;
break;
}
what = 2;
break;
/* Argument sizes */
case 'h':
if (what > 3) {
valid = -1;
break;
}
argsize = 1;
what = 4;
break;
case 'l':
if (what > 3) {
valid = -1;
break;
}
argsize = 2;
what = 4;
break;
case 'L':
/* Long long (64 bits); not supported */
valid = -1;
break;
/* Argument types */
case 'd':
case 'i':
case 'o':
case 'u':
case 'x':
case 'X':
if (argsize == 1)
intval = va_arg(args, int);
else if (argsize == 2)
intval = va_arg(args, long);
else
intval = va_arg(args, int);
valid = 1;
break;
case 'c':
intval = va_arg(args, int);
valid = 1;
break;
case 's':
strval = va_arg(args, char *);
valid = 1;
break;
case 'p':
ptrval = va_arg(args, void *);
valid = 1;
break;
case 'n':
*((int *)va_arg(args, int *)) = total;
valid = 1;
break;
case '%':
valid = 1;
break;
/* All other characters */
default:
valid = -1;
break;
} /* switch (*format) */
}
if (valid != 1) {
/* Not a valid %-token; start loop over (token will get printed
* out next time through). */
continue;
}
/* Don't zero-pad if a precision was given or left-justifying */
if (precision != -1 || left_justify)
zero_pad = 0;
/* For numbers, limit precision to the size of the print buffer */
if ((*format=='d' || *format=='i' || *format=='o' || *format=='u'
|| *format=='x' || *format=='X')
&& precision > (signed) sizeof(numbuf))
{
precision = sizeof(numbuf);
}
switch (*format++) { /* Do something with this token */
case '%':
(*writefunc)(format-1, 1, arg1, arg2);
total++;
break;
case 'p':
/* Print the NULL value specially */
if (ptrval == NULL) {
strval = "(null)";
goto handle_string;
}
/* For all other values, pretend it's really %#.8x */
alt_form = 1;
zero_pad = 0;
precision = 8;
intval = (long) ptrval;
/* Fall through */
case 'x':
case 'X': {
static const char x_chars[] = "0123456789abcdef0x";
static const char X_chars[] = "0123456789ABCDEF0X";
const char *chars = (format[-1]=='X') ? X_chars : x_chars;
const char *padstr = zero_pad ? "0" : " ";
unsigned long uintval;
int len;
uintval = (unsigned long) intval;
if (alt_form && uintval != 0) {
n = writefunc(chars+16, 2, arg1, arg2);
total += n;
if (n != 2)
break;
width -= 2;
}
if (precision < 1)
precision = 1;
numptr = numbuf + sizeof(numbuf);
for (len = 0; len < precision || uintval != 0; len++) {
*--numptr = chars[uintval%16];
uintval /= 16;
}
if (left_justify) {
n = writefunc(numptr, len, arg1, arg2);
total += n;
if (n != len)
break;
}
while (len < width) {
if (1 != writefunc(padstr, 1, arg1, arg2))
break;
total++;
width--;
}
if (!left_justify)
total += writefunc(numptr, len, arg1, arg2);
break;
} /* case 'x', 'X' */
case 'o': {
const char *padstr = zero_pad ? "0" : " ";
unsigned long uintval;
int len;
uintval = (unsigned long) intval;
if (precision < 1)
precision = 1;
numptr = numbuf + sizeof(numbuf);
for (len = 0; len < precision || uintval != 0; len++) {
*--numptr = '0' + uintval%8;
uintval /= 8;
}
if (alt_form && *numptr != '0') {
*--numptr = '0';
len++;
}
if (left_justify) {
n = writefunc(numptr, len, arg1, arg2);
total += n;
if (n != len)
break;
}
while (len < width) {
if (1 != writefunc(padstr, 1, arg1, arg2))
break;
total++;
width--;
}
if (!left_justify)
total += writefunc(numptr, len, arg1, arg2);
break;
} /* case 'o' */
case 'u': {
const char *padstr = zero_pad ? "0" : " ";
unsigned long uintval;
int len;
uintval = (unsigned long) intval;
if (precision < 1)
precision = 1;
numptr = numbuf + sizeof(numbuf);
for (len = 0; len < precision || uintval != 0; len++) {
*--numptr = '0' + uintval%10;
uintval /= 10;
}
if (left_justify) {
n = writefunc(numptr, len, arg1, arg2);
total += n;
if (n != len)
break;
}
while (len < width) {
if (1 != writefunc(padstr, 1, arg1, arg2))
break;
total++;
width--;
}
if (!left_justify)
total += writefunc(numptr, len, arg1, arg2);
break;
} /* case 'u' */
case 'd':
case 'i': {
const char *padstr = zero_pad ? "0" : " ";
int len;
char sign_char;
numptr = numbuf + sizeof(numbuf);
len = 0;
sign_char = 0;
if (intval < 0) {
sign_char = '-';
intval = -intval;
if (intval < 0) { /* true for 0x800...0 */
*numptr-- = '0' - intval%10;
len++;
intval /= 10;
intval = -intval;
}
}
if (precision < 1)
precision = 1;
for (; len < precision || intval != 0; len++) {
*--numptr = '0' + intval%10;
intval /= 10;
}
if (!sign_char) {
if (always_sign)
sign_char = '+';
else if (insert_blank)
sign_char = ' ';
}
if (sign_char) {
if (zero_pad) {
if (1 != writefunc(&sign_char, 1, arg1, arg2))
break;
total++;
width--;
} else {
*--numptr = sign_char;
len = 0;
}
}
if (left_justify) {
n = writefunc(numptr, len, arg1, arg2);
total += n;
if (n != len)
break;
}
while (len < width) {
if (1 != writefunc(padstr, 1, arg1, arg2))
break;
total++;
width--;
}
if (!left_justify)
total += writefunc(numptr, len, arg1, arg2);
break;
} /* case 'd', 'i' */
case 'c': {
const char *padstr = zero_pad ? "0" : " ";
unsigned char c = (unsigned char) intval;
if (left_justify) {
if (1 != writefunc((char *)&c, 1, arg1, arg2))
break;
total++;
}
while (width > 1) {
if (1 != writefunc(padstr, 1, arg1, arg2))
break;
total++;
width--;
}
if (!left_justify)
total += writefunc((char *)&c, 1, arg1, arg2);
break;
} /* case 'c' */
case 's': {
const char *padstr;
int len;
/* Catch null strings */
if (strval == NULL) {
strval = "(null)";
}
handle_string: /* NULL pointers for %p come here */
padstr = zero_pad ? "0" : " ";
len = strlen(strval);
if (precision < 0 || precision > len)
precision = len;
if (left_justify && precision > 0) {
n = writefunc(strval, precision, arg1, arg2);
total += n;
if (n != precision)
break;
}
while (width > precision) {
if (1 != writefunc(padstr, 1, arg1, arg2))
break;
total++;
width--;
}
if (!left_justify && precision > 0)
total += writefunc(strval, precision, arg1, arg2);
break;
} /* case 's' */
} /* switch (*format++) */
startptr = format; /* Start again after this %-token */
} /* while (*format) */
/* Write anything left over. */
if (startptr != format)
total += writefunc(startptr, format-startptr, arg1, arg2);
/* Return total bytes written. */
return total;
}
/*************************************************************************/
static int writefunc(const char *buf, size_t len, char **string, size_t *size)
{
if ((*size) <= 0)
return 0;
if (len > (*size)-1)
len = (*size)-1;
if (len > 0)
memcpy((*string), buf, len);
(*string) += len;
(*string)[0] = 0;
(*size) -= len;
return len;
}
int my_vsnprintf(char *string, size_t size, const char *format, va_list args)
{
int ret;
if (size <= 0)
return 0;
ret = _pfmt(format, args, (_pfmt_writefunc_t) writefunc, &string, &size);
return ret;
}
int my_snprintf(char *string, size_t size, const char *format, ...)
{
va_list args;
int ret;
va_start(args, format);
ret = my_vsnprintf(string, size, format, args);
va_end(args);
return ret;
}
/*************************************************************************/
/*
* Local variables:
* c-file-style: "stroustrup"
* c-file-offsets: ((case-label . *) (statement-case-intro . *))
* indent-tabs-mode: nil
* End:
*
* vim: expandtab shiftwidth=4:
*/