solanum-vs-hackint-and-char.../servlink/servlink.c

121 lines
2.6 KiB
C

/************************************************************************
* IRC - Internet Relay Chat, servlink/servlink.c
*
* 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 1, 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., 675 Mass Ave, Cambridge, MA 02139, USA.
*
* $Id: servlink.c 6 2005-09-10 01:02:21Z nenolod $
*/
#include "setup.h"
#include <sys/types.h>
#include <sys/time.h>
#include <sys/socket.h>
#include <stdlib.h>
#include <stdio.h>
#include <string.h>
#include <unistd.h>
#include <fcntl.h>
#ifdef HAVE_LIBZ
#include <zlib.h>
#endif
#include "servlink.h"
#include "io.h"
#include "control.h"
static void usage(void);
struct slink_state in_state;
struct slink_state out_state;
struct fd_table fds[3] = {
{0, read_ctrl, NULL}, /* ctrl */
{0, NULL, NULL}, /* data */
{0, NULL, NULL}, /* net */
};
/* usage();
*
* Display usage message
*/
static void
usage(void)
{
fprintf(stderr, "ircd-ratbox server link v1.2\n");
fprintf(stderr, "2004-03-02\n");
fprintf(stderr, "\n");
fprintf(stderr, "This program is called by the ircd-ratbox ircd.\n");
fprintf(stderr, "It cannot be used on its own.\n");
exit(1);
}
int
main(int argc, char *argv[])
{
int max_fd = 0;
int i, x;
#ifdef SERVLINK_DEBUG
int GDBAttached = 0;
while (!GDBAttached)
sleep(1);
#endif
/* Make sure we are running under ircd.. */
if(argc != 4 || strcmp(argv[0], "-slink"))
usage(); /* exits */
for (i = 0; i < 3; i++)
{
fds[i].fd = atoi(argv[i + 1]);
if(fds[i].fd < 0)
exit(1);
}
for (i = 0; i < 3; i++)
{
/* XXX: Hack alert...we need to do dup2() here for some dumb
* platforms (Solaris) that don't like select using fds > 255
*/
if(fds[i].fd >= 255)
{
for(x = 0; x < 255; x++)
{
if(x != fds[0].fd && x != fds[1].fd && x != fds[2].fd)
{
if(dup2(fds[i].fd, x) < 0)
exit(1);
close(fds[i].fd);
fds[i].fd = x;
break;
}
}
}
fcntl(fds[i].fd, F_SETFL, O_NONBLOCK);
if(fds[i].fd > max_fd)
max_fd = fds[i].fd;
}
/* enter io loop */
io_loop(max_fd + 1);
/* NOTREACHED */
return (0);
} /* main() */