mirror of
https://github.com/NishiOwO/fvwm1.git
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58 lines
1.3 KiB
C
58 lines
1.3 KiB
C
#include <stdio.h>
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#include <stdlib.h>
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#include "fvwmlib.h"
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#include "../fvwm/module.h"
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/************************************************************************
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*
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* Reads a single packet of info from fvwm. Prototype is:
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* unsigned long header[3];
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* unsigned long *body;
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* int fd[2];
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* void DeadPipe(int nonsense); /* Called if the pipe is no longer open
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*
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* ReadFvwmPacket(fd[1],header, &body);
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*
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* Returns:
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* > 0 everything is OK.
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* = 0 invalid packet.
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* < 0 pipe is dead. (Should never occur)
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*
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**************************************************************************/
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int ReadFvwmPacket(int fd, unsigned long *header, unsigned long **body)
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{
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int count,total,count2,body_length;
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char *cbody;
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extern void DeadPipe(int);
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if((count = read(fd,header,3*sizeof(unsigned long))) >0)
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{
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if(header[0] == START_FLAG)
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{
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body_length = header[2]-3;
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*body = (unsigned long *)
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safemalloc(body_length * sizeof(unsigned long));
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cbody = (char *)(*body);
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total = 0;
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while(total < body_length*sizeof(unsigned long))
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{
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if((count2=
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read(fd,&cbody[total],
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body_length*sizeof(unsigned long)-total)) >0)
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{
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total += count2;
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}
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else if(count2 < 0)
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{
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DeadPipe(1);
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}
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}
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}
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else
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count = 0;
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}
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if(count <= 0)
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DeadPipe(1);
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return count;
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}
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