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|
/* ficsmain.c
*
*/
/*
fics - An internet chess server.
Copyright (C) 1993 Richard V. Nash
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 2 of the License, 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.
*/
/* Revision history:
name email yy/mm/dd Change
Richard Nash 93/10/22 Created
Markus Uhlin 23/12/10 Fixed the includes
Markus Uhlin 23/12/12 Revamped the file
Markus Uhlin 24/03/16 Fixed unbounded string copying
and marked usage() '__dead'.
Markus Uhlin 24/06/01 Added command-line option 'l'
Markus Uhlin 24/08/03 Added command-line option 'd'
*/
#include "stdinclude.h"
#include "common.h"
#include <sys/param.h>
#include <err.h>
#include <errno.h>
#include <fcntl.h>
#include <stdint.h>
#include <unistd.h>
#include "board.h"
#include "command.h"
#include "comproc.h"
#include "config.h"
#ifndef IGNORE_ECO
#include "eco.h"
#endif
#include "ficsmain.h"
#include "legal.h"
#include "network.h"
#include "playerdb.h"
#include "ratings.h"
#include "shutdown.h"
#include "talkproc.h"
#include "utils.h"
#if __linux__
#include <bsd/string.h>
#endif
/* Arguments */
PUBLIC int port;
PUBLIC int withConsole;
PRIVATE __dead void usage(char *);
PRIVATE void
BrokenPipe(int sig)
{
fprintf(stderr, "FICS: Got Broken Pipe (%d)\n", sig);
}
PRIVATE void
daemonize(void)
{
int fd[2];
mode_t mode[2];
mode[0] = (S_IRUSR | S_IWUSR | S_IRGRP | S_IROTH);
mode[1] = (S_IRUSR | S_IWUSR | S_IRGRP | S_IROTH);
if (file_exists(DAEMON_LOCKFILE)) {
errx(1, "%s: %s: already exists\ndelete the file manually and "
"try again after making sure that no copy of the program "
"is already running in the background",
__func__,
DAEMON_LOCKFILE);
} else if ((fd[0] = open(DAEMON_LOCKFILE, (O_CREAT | O_RDWR),
mode[0])) == -1)
err(1, "%s: open(%s, ...)", __func__, DAEMON_LOCKFILE);
dprintf(fd[0], "%jd\n", (intmax_t)getpid());
close(fd[0]);
if ((fd[1] = open(DAEMON_LOGFILE, (O_APPEND | O_CREAT | O_RDWR),
mode[1])) == -1)
err(1, "%s: open(%s, ...)", __func__, DAEMON_LOGFILE);
else if (daemon(1, 1) == -1) {
int i;
i = errno;
close(fd[1]);
errno = i;
err(1, "%s: failed to run in the background", __func__);
}
(void) dup2(fd[1], STDIN_FILENO);
(void) dup2(fd[1], STDOUT_FILENO);
(void) dup2(fd[1], STDERR_FILENO);
if (fd[1] > 2)
close(fd[1]);
}
PRIVATE void
GetArgs(int argc, char *argv[])
{
port = DEFAULT_PORT;
withConsole = 0;
for (int i = 1; i < argc; i++) {
if (argv[i][0] == '-') {
switch (argv[i][1]) {
case 'p':
if (i == argc - 1)
usage(argv[0]);
i++;
if (sscanf(argv[i], "%d", &port) != 1)
usage(argv[0]);
break;
case 'C':
fprintf(stderr, "-C Not implemented!\n");
exit(1);
withConsole = 1;
break;
case 'd':
daemonize();
break;
case 'h':
usage(argv[0]);
break;
case 'l':
puts(legalNotice);
exit(0);
}
} else {
usage(argv[0]);
}
}
}
PRIVATE __dead void
TerminateServer(int sig)
{
fprintf(stderr, "FICS: Got signal %d\n", sig);
output_shut_mess();
TerminateCleanup();
net_close();
exit(EXIT_FAILURE);
}
PRIVATE void
main_event_loop(void)
{
comstr_t str;
int sockfd = -1;
while (1) {
ngc2(&str, HEARTBEATTIME);
if (process_heartbeat(&sockfd) == COM_LOGOUT && sockfd != -1) {
process_disconnection(sockfd);
net_close_connection(sockfd);
}
sockfd = -1;
}
}
PRIVATE __dead void
usage(char *progname)
{
fprintf(stderr, "Usage: %s [-p port] [-C] [-dhl]\n", progname);
fprintf(stderr, "\t\t-p port\t\tSpecify port. (Default=%d)\n",
DEFAULT_PORT);
fprintf(stderr, "\t\t-C\t\tStart with console player connected "
"to stdin.\n");
fprintf(stderr, "\t\t-d\t\tRun in the background.\n");
fprintf(stderr, "\t\t-h\t\tDisplay this information.\n");
fprintf(stderr, "\t\t-l\t\tDisplay the legal notice and exit.\n");
exit(EXIT_FAILURE);
}
PUBLIC int
main(int argc, char *argv[])
{
#ifdef DEBUG
#ifdef HAVE_MALLOC_DEBUG
malloc_debug(16);
#endif
#endif
GetArgs(argc, argv);
signal(SIGINT, TerminateServer);
signal(SIGPIPE, BrokenPipe);
signal(SIGTERM, TerminateServer);
if (net_init(port)) {
fprintf(stderr, "FICS: Network initialize failed on port %d.\n",
port);
return EXIT_FAILURE;
}
startuptime = time(NULL);
strlcpy(fics_hostname, SERVER_HOSTNAME, sizeof fics_hostname);
game_high = 0;
player_high = 0;
quota_time = 60;
srand(startuptime);
fprintf(stderr, "FICS: Initialized on port %d at %s.\n", port,
strltime(&startuptime));
fprintf(stderr, "FICS: commands_init()\n");
commands_init();
fprintf(stderr, "FICS: rating_init()\n");
rating_init();
fprintf(stderr, "FICS: wild_init()\n");
wild_init();
#ifndef IGNORE_ECO
fprintf(stderr, "FICS: book init()\n");
BookInit();
#endif
fprintf(stderr, "FICS: player_array_init()\n");
player_array_init();
fprintf(stderr, "FICS: player_init(withConsole=%d)\n", withConsole);
player_init(withConsole);
main_event_loop();
fprintf(stderr, "FICS: Closing down.\n");
output_shut_mess();
net_close();
return EXIT_SUCCESS;
}
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