/*
* creates the sockets for listening to clients
*
* only called when server first started
*/
void
CreateSockets(int old_listen_count, OldListenRec *old_listen)
{
int i;
struct sigaction act;
FD_ZERO(&AllSockets);
FD_ZERO(&AllClients);
FD_ZERO(&LastSelectMask);
FD_ZERO(&ClientsWithInput);
FD_ZERO(&WellKnownConnections);
for (i = 0; i < MAXSOCKS; i++)
ConnectionTranslation[i] = 0;
lastfdesc = sysconf(_SC_OPEN_MAX) - 1;
if ((lastfdesc < 0) || (lastfdesc > MAXSOCKS)) {
lastfdesc = MAXSOCKS;
}
if (old_listen_count > 0) {
/*
* The font server cloned itself. Re-use previously opened
* transports for listening.
*/
ListenTransConns = (XtransConnInfo *) malloc (
old_listen_count * sizeof (XtransConnInfo));
ListenTransFds = (int *) malloc (old_listen_count * sizeof (int));
ListenTransCount = 0;
for (i = 0; i < old_listen_count; i++)
{
char portnum[10];
if (old_listen[i].portnum != ListenPort)
continue; /* this should never happen */
else
sprintf (portnum, "%d", old_listen[i].portnum);
if ((ListenTransConns[ListenTransCount] =
_FontTransReopenCOTSServer (old_listen[i].trans_id,
old_listen[i].fd, portnum)) != NULL)
{
ListenTransFds[ListenTransCount] = old_listen[i].fd;
FD_SET (old_listen[i].fd, &WellKnownConnections);
NoticeF("reusing existing file descriptor %d\n",
old_listen[i].fd);
ListenTransCount++;
}
}
} else {
char port[20];
int partial;
sprintf (port, "%d", ListenPort);
if ((_FontTransMakeAllCOTSServerListeners (port, &partial,
&ListenTransCount, &ListenTransConns) >= 0) &&
(ListenTransCount >= 1))
{
ListenTransFds = (int *) malloc (ListenTransCount * sizeof (int));
for (i = 0; i < ListenTransCount; i++)
{
int fd = _FontTransGetConnectionNumber (ListenTransConns[i]);
ListenTransFds[i] = fd;
FD_SET (fd, &WellKnownConnections);
}
}
}
if (! XFD_ANYSET(&WellKnownConnections))
FatalError("cannot establish any listening sockets\n");
/* set up all the signal handlers */
sigemptyset(&act.sa_mask);
act.sa_flags = SA_RESTART;
#define HANDLE_SIGNAL(s, h) act.sa_handler = h; sigaction(s, &act, NULL)
HANDLE_SIGNAL(SIGPIPE, SIG_IGN);
HANDLE_SIGNAL(SIGHUP, AutoResetServer);
HANDLE_SIGNAL(SIGINT, GiveUp);
HANDLE_SIGNAL(SIGTERM, GiveUp);
HANDLE_SIGNAL(SIGUSR1, ServerReconfig);
HANDLE_SIGNAL(SIGUSR2, ServerCacheFlush);
HANDLE_SIGNAL(SIGCHLD, CleanupChild);
XFD_COPYSET (&WellKnownConnections, &AllSockets);
}
int
main(int argc, char **argv)
{
int pid, ret;
struct sigaction new_action, old_action;
GOptionContext *ctx;
GError *parse_err = NULL;
daemon_pid_file_ident = daemon_log_ident = daemon_ident_from_argv0(argv[0]);
daemon_pid_file_proc = conf_pid_file_proc;
if (conf_init() < 0)
return EXIT_FAILURE;
ctx = g_option_context_new("");
g_option_context_add_main_entries(ctx, options, PACKAGE);
g_option_context_set_summary(ctx, PACKAGE"-"VERSION GITHEAD" - mpd cron daemon");
if (!g_option_context_parse(ctx, &argc, &argv, &parse_err)) {
g_printerr("option parsing failed: %s\n", parse_err->message);
g_option_context_free(ctx);
g_error_free(parse_err);
return EXIT_FAILURE;
}
g_option_context_free(ctx);
if (optv) {
about();
cleanup();
return EXIT_SUCCESS;
}
#ifdef DAEMON_SET_VERBOSITY_AVAILABLE
if (conf.no_daemon)
daemon_set_verbosity(LOG_DEBUG);
#endif /* DAEMON_SET_VERBOSITY_AVAILABLE */
/* Version to environment variable */
g_setenv("MPDCRON_PACKAGE", PACKAGE, 1);
g_setenv("MPDCRON_VERSION", VERSION, 1);
g_setenv("MPDCRON_GITHEAD", GITHEAD, 1);
/* Command line options to environment variables */
if (conf.no_daemon)
g_unsetenv("MCOPT_DAEMONIZE");
else
g_setenv("MCOPT_DAEMONIZE", "1", 1);
/* Important! Parse configuration file before killing the daemon
* because the configuration file has a pidfile and killwait option.
*/
cfd = g_key_file_new();
if (keyfile_load(&cfd) < 0) {
cleanup();
return EXIT_FAILURE;
}
if (optk) {
if (daemon_pid_file_kill_wait(SIGINT, conf.killwait) < 0) {
g_warning("Failed to kill daemon: %s", strerror(errno));
cleanup();
return EXIT_FAILURE;
}
daemon_pid_file_remove();
cleanup();
return EXIT_SUCCESS;
}
/* Logging */
g_log_set_default_handler(log_handler, GINT_TO_POINTER(conf.no_daemon ? 5 : conf.loglevel));
/* Signal handling */
new_action.sa_handler = sig_cleanup;
sigemptyset(&new_action.sa_mask);
new_action.sa_flags = 0;
#define HANDLE_SIGNAL(sig) \
do { \
sigaction((sig), NULL, &old_action); \
if (old_action.sa_handler != SIG_IGN) \
sigaction((sig), &new_action, NULL); \
} while (0)
HANDLE_SIGNAL(SIGABRT);
HANDLE_SIGNAL(SIGSEGV);
HANDLE_SIGNAL(SIGINT);
HANDLE_SIGNAL(SIGTERM);
#undef HANDLE_SIGNAL
if (conf.no_daemon) {
/* Create the main loop */
loop = g_main_loop_new(NULL, FALSE);
#ifdef HAVE_GMODULE
/* Load modules which may add initial events */
keyfile_load_modules(&cfd);
#endif /* HAVE_GMODULE */
g_key_file_free(cfd);
cfd = NULL;
/* Add default initial events */
loop_connect();
/* Run the main loop */
g_main_loop_run(loop);
cleanup();
return EXIT_SUCCESS;
}
/* Daemonize */
if ((pid = daemon_pid_file_is_running()) > 0) {
g_critical("Daemon already running on PID %u", pid);
return EXIT_FAILURE;
}
daemon_retval_init();
pid = daemon_fork();
if (pid < 0) {
g_critical("Failed to fork: %s", strerror(errno));
daemon_retval_done();
return EXIT_FAILURE;
}
else if (pid != 0) { /* Parent */
cleanup();
if ((ret = daemon_retval_wait(2)) < 0) {
g_critical("Could not receive return value from daemon process: %s",
strerror(errno));
return 255;
}
if (ret != 0)
g_critical("Daemon returned %i as return value", ret);
else
g_critical("Daemon returned %i as return value", ret);
return ret;
}
else { /* Daemon */
if (daemon_close_all(-1) < 0) {
g_critical("Failed to close all file descriptors: %s",
strerror(errno));
daemon_retval_send(1);
return EXIT_FAILURE;
}
if (daemon_pid_file_create() < 0) {
g_critical("Failed to create PID file: %s",
strerror(errno));
daemon_retval_send(2);
return EXIT_FAILURE;
}
/* Send OK to parent process */
daemon_retval_send(0);
/* Create the main loop */
loop = g_main_loop_new(NULL, FALSE);
#ifdef HAVE_GMODULE
/* Load modules which may add initial events */
keyfile_load_modules(&cfd);
#endif /* HAVE_GMODULE */
g_key_file_free(cfd);
cfd = NULL;
/* Add default initial events */
loop_connect();
/* Run the main loop */
g_main_loop_run(loop);
cleanup();
return EXIT_SUCCESS;
}
return EXIT_SUCCESS;
}
