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/*
This file is part of libmicrohttpd
(C) 2008 Christian Grothoff
libmicrohttpd 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, or (at your
option) any later version.
libmicrohttpd 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 libmicrohttpd; see the file COPYING. If not, write to the
Free Software Foundation, Inc., 59 Temple Place - Suite 330,
Boston, MA 02111-1307, USA.
*/
/**
* @file socat.c
* @brief Code to fork-exec zzuf and start the socat process
* @author Christian Grothoff
*/
#include <errno.h>
#include <sys/types.h>
#include <sys/wait.h>
#include <signal.h>
static pid_t zzuf_pid;
static void
zzuf_socat_start() {
int status;
char * const args[] = {
"zzuf",
"--ratio=0.0:0.75",
"-n",
"-A",
"socat",
"TCP4-LISTEN:11081,reuseaddr,fork",
"TCP4:127.0.0.1:11080",
NULL,
};
zzuf_pid = fork();
if (zzuf_pid == -1) {
fprintf(stderr,
"fork failed: %s\n",
strerror(errno));
exit(1);
}
if (zzuf_pid != 0)
{
sleep(1); /* allow zzuf and socat to start */
status = 0;
if (0 < waitpid(zzuf_pid, &status, WNOHANG))
{
if (WIFEXITED(status))
fprintf(stderr,
"zzuf died with status code %d!\n",
WEXITSTATUS(status));
if (WIFSIGNALED(status))
fprintf(stderr,
"zzuf died from signal %d!\n",
WTERMSIG(status));
exit(1);
}
return;
}
setpgrp();
execvp("zzuf",
args);
fprintf(stderr,
"execution of `zzuf' failed: %s\n",
strerror(errno));
zzuf_pid = 0; /* fork failed */
exit(1);
}
static void
zzuf_socat_stop() {
int status;
if (zzuf_pid != 0)
{
if (0 != killpg(zzuf_pid, SIGINT))
fprintf(stderr,
"Failed to killpg: %s\n",
strerror(errno));
kill(zzuf_pid, SIGINT);
waitpid(zzuf_pid, &status, 0);
sleep(1); /* allow socat to also die in peace */
}
}
/* end of socat.c */
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