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/*
This file is part of GNUnet.
(C) 2010 Christian Grothoff (and other contributing authors)
GNUnet 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 3, or (at your
option) any later version.
GNUnet 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 GNUnet; see the file COPYING. If not, write to the
Free Software Foundation, Inc., 59 Temple Place - Suite 330,
Boston, MA 02111-1307, USA.
*/
/**
* @file transport/test_transport_wlan_dummy.c
* @brief helper for the testcase for plugin_transport_wlan.c
* @author David Brodski
*/
#include "platform.h"
#include "gnunet_constants.h"
#include "gnunet_os_lib.h"
#include "gnunet_transport_plugin.h"
#include "transport.h"
#include "plugin_transport_wlan.h"
#include "gnunet_common.h"
#include "gnunet-transport-wlan-helper.h"
#include <stdio.h>
#include <stdlib.h>
#include <sys/stat.h>
#define FIFO_FILE1 "MYFIFOin"
#define FIFO_FILE2 "MYFIFOout"
#define MAXLINE 5000
int closeprog = 0;
void sigfunc(int sig)
{
if(sig != SIGINT || sig != SIGTERM || sig != SIGKILL)
return;
else
{
closeprog = 1;
}
}
int
main(int argc, char *argv[])
{
struct stat st;
int erg;
int first;
FILE *fpin;
FILE *fpout;
pid_t pid;
signal(SIGINT,sigfunc);
signal(SIGTERM,sigfunc);
signal(SIGKILL,sigfunc);
//make the fifos if needed
if (stat(FIFO_FILE1, &st) != 0)
{
if (stat(FIFO_FILE2, &st) != 0)
{
perror("FIFO 2 exists, but FIFO 1 not");
exit(1);
}
first = 1;
umask(0);
erg = mknod(FIFO_FILE1, S_IFIFO | 0666, 0);
erg = mknod(FIFO_FILE2, S_IFIFO | 0666, 0);
if ((fpin = fopen(FIFO_FILE1, "r")) == NULL)
{
perror("fopen");
exit(1);
}
if ((fpout = fopen(FIFO_FILE2, "w")) == NULL)
{
perror("fopen");
exit(1);
}
}
else
{
first = 0;
if (stat(FIFO_FILE2, &st) == 0)
{
perror("FIFO 1 exists, but FIFO 2 not");
exit(1);
}
if ((fpout = fopen(FIFO_FILE1, "w")) == NULL)
{
perror("fopen");
exit(1);
}
if ((fpin = fopen(FIFO_FILE2, "r")) == NULL)
{
perror("fopen");
exit(1);
}
}
// fork
if ((pid = fork()) < 0)
{
perror("FORK ERROR");
return -3;
}
else if (pid == 0) // CHILD PROCESS
{
int rv = 0;
int readc = 0;
int pos = 0;
char line[MAXLINE];
while (closeprog == 0)
{
readc = 0;
while (readc < sizeof( struct RadiotapHeader) + sizeof(struct GNUNET_MessageHeader)){
if ((rv = read(STDIN_FILENO, line, MAXLINE)) < 0)
{
perror("READ ERROR FROM STDIN");
}
readc += rv;
}
pos = 0;
fwrite(&line[pos], 1, sizeof(struct GNUNET_MessageHeader), fpout);
pos += sizeof(struct GNUNET_MessageHeader);
//do not send radiotap header
pos += sizeof( struct RadiotapHeader);
while (pos < readc)
{
pos += fwrite(&line[pos], 1, readc - pos, fpout);
}
}
//clean up
fclose(fpout);
}
else // PARENT PROCESS
{
int rv = 0;
ssize_t pos = 0;
char line[MAXLINE];
while (closeprog == 0)
{
if ((rv = fread(line, 1, MAXLINE, fpin)) < 0)
{
perror("READ ERROR FROM STDIN");
}
pos = 0;
while (pos < rv)
{
pos += write(STDOUT_FILENO, &line[pos], rv - pos);
}
}
//clean up
fclose(fpin);
if (first == 1)
{
unlink(FIFO_FILE1);
unlink(FIFO_FILE2);
}
}
// Write the input to the output
return (0);
}
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