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/*
This file is part of libmicrohttpd
Copyright (C) 2008,2016 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., 51 Franklin Street, Fifth Floor,
Boston, MA 02110-1301, 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>
#ifdef _WIN32
#ifndef WIN32_LEAN_AND_MEAN
#define WIN32_LEAN_AND_MEAN 1
#endif /* !WIN32_LEAN_AND_MEAN */
#include <windows.h>
#endif
/**
* A larger loop count will run more random tests --
* which would be good, except that it may take too
* long for most user's patience. So this small
* value is the default.
*/
#define LOOP_COUNT 10
#define CURL_TIMEOUT 50L
static pid_t zzuf_pid;
static void
zzuf_socat_start ()
{
int status;
char *const args[] = {
"zzuf",
"--ratio=0.0:0.75",
"-n",
"-A",
"socat",
"-lf",
"/dev/null",
"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)
{
(void) 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;
}
setpgid (0, 0);
execvp ("zzuf", args);
fprintf (stderr, "execution of `zzuf' failed: %s\n", strerror (errno));
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);
(void) sleep (1); /* allow socat to also die in peace */
}
}
/* end of socat.c */
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