static void sig_shutdown(int foo, siginfo_t *bar, void *baz) {
debug(1, "shutdown requested...");
shairport_shutdown();
// daemon_log(LOG_NOTICE, "exit...");
daemon_retval_send(255);
daemon_pid_file_remove();
exit(0);
}
void
cleanup()
{
#ifdef HAVE_LIBDAEMON
daemon_retval_send(-1);
daemon_retval_done();
daemon_pid_file_remove();
#else
throw Exception("Daemonizing support is not available.\n"
"(libdaemon[-devel] was not available at compile time)\n");
#endif
}
int main(int argc, char *argv[])
{
// create a configuration
dtn::daemon::Configuration &conf = dtn::daemon::Configuration::getInstance();
// load parameter into the configuration
conf.params(argc, argv);
#ifdef HAVE_LIBDAEMON
if (conf.getDaemon().daemonize())
{
int ret = 0;
pid_t pid;
#ifdef HAVE_DAEMON_RESET_SIGS
/* Reset signal handlers */
if (daemon_reset_sigs(-1) < 0) {
daemon_log(LOG_ERR, "Failed to reset all signal handlers: %s", strerror(errno));
return 1;
}
/* Unblock signals */
if (daemon_unblock_sigs(-1) < 0) {
daemon_log(LOG_ERR, "Failed to unblock all signals: %s", strerror(errno));
return 1;
}
#endif
/* Set identification string for the daemon for both syslog and PID file */
daemon_pid_file_ident = daemon_log_ident = daemon_ident_from_argv0(argv[0]);
/* set the pid file path */
try {
std::string p = conf.getDaemon().getPidFile().getPath();
__daemon_pidfile__ = new char[p.length() + 1];
::strcpy(__daemon_pidfile__, p.c_str());
daemon_pid_file_proc = __daemon_pid_file_proc__;
} catch (const dtn::daemon::Configuration::ParameterNotSetException&) { };
/* Check if we are called with -k parameter */
if (conf.getDaemon().kill_daemon())
{
int ret;
/* Kill daemon with SIGTERM */
/* Check if the new function daemon_pid_file_kill_wait() is available, if it is, use it. */
if ((ret = daemon_pid_file_kill_wait(SIGTERM, 5)) < 0)
daemon_log(LOG_WARNING, "Failed to kill daemon: %s", strerror(errno));
return ret < 0 ? 1 : 0;
}
/* Check that the daemon is not rung twice a the same time */
if ((pid = daemon_pid_file_is_running()) >= 0) {
daemon_log(LOG_ERR, "Daemon already running on PID file %u", pid);
return 1;
}
/* Prepare for return value passing from the initialization procedure of the daemon process */
if (daemon_retval_init() < 0) {
daemon_log(LOG_ERR, "Failed to create pipe.");
return 1;
}
/* Do the fork */
if ((pid = daemon_fork()) < 0) {
/* Exit on error */
daemon_retval_done();
return 1;
} else if (pid) { /* The parent */
int ret;
/* Wait for 20 seconds for the return value passed from the daemon process */
if ((ret = daemon_retval_wait(20)) < 0) {
daemon_log(LOG_ERR, "Could not recieve return value from daemon process: %s", strerror(errno));
return 255;
}
//daemon_log(ret != 0 ? LOG_ERR : LOG_INFO, "Daemon returned %i as return value.", ret);
return ret;
} else { /* The daemon */
/* Close FDs */
if (daemon_close_all(-1) < 0) {
daemon_log(LOG_ERR, "Failed to close all file descriptors: %s", strerror(errno));
/* Send the error condition to the parent process */
daemon_retval_send(1);
goto finish;
}
/* Create the PID file */
if (daemon_pid_file_create() < 0) {
daemon_log(LOG_ERR, "Could not create PID file (%s).", strerror(errno));
daemon_retval_send(2);
goto finish;
}
/* Initialize signal handling */
if (daemon_signal_init(SIGINT, SIGTERM, SIGQUIT, SIGHUP, SIGUSR1, SIGUSR2, 0) < 0) {
daemon_log(LOG_ERR, "Could not register signal handlers (%s).", strerror(errno));
daemon_retval_send(3);
goto finish;
}
ret = __daemon_run();
finish:
/* Do a cleanup */
daemon_log(LOG_INFO, "Exiting...");
daemon_retval_send(255);
daemon_signal_done();
daemon_pid_file_remove();
}
return ret;
} else {
#endif
// run the daemon
return __daemon_run();
#ifdef HAVE_LIBDAEMON
}
#endif
}
int main(int argc, char *argv[]) {
int r = 255;
int wrote_pid_file = 0;
avahi_set_log_function(log_function);
init_rand_seed();
avahi_server_config_init(&config.server_config);
config.command = DAEMON_RUN;
config.daemonize = 0;
config.config_file = NULL;
#ifdef HAVE_DBUS
config.enable_dbus = 1;
config.fail_on_missing_dbus = 1;
config.n_clients_max = 0;
config.n_objects_per_client_max = 0;
config.n_entries_per_entry_group_max = 0;
#endif
config.drop_root = 1;
config.set_rlimits = 1;
#ifdef ENABLE_CHROOT
config.use_chroot = 1;
#endif
config.modify_proc_title = 1;
config.disable_user_service_publishing = 0;
config.publish_dns_servers = NULL;
config.publish_resolv_conf = 0;
config.use_syslog = 0;
config.debug = 0;
config.rlimit_as_set = 0;
config.rlimit_core_set = 0;
config.rlimit_data_set = 0;
config.rlimit_fsize_set = 0;
config.rlimit_nofile_set = 0;
config.rlimit_stack_set = 0;
#ifdef RLIMIT_NPROC
config.rlimit_nproc_set = 0;
#endif
if ((argv0 = strrchr(argv[0], '/')))
argv0 = avahi_strdup(argv0 + 1);
else
argv0 = avahi_strdup(argv[0]);
daemon_pid_file_ident = (const char *) argv0;
daemon_log_ident = (char*) argv0;
daemon_pid_file_proc = pid_file_proc;
if (parse_command_line(&config, argc, argv) < 0)
goto finish;
if (config.modify_proc_title)
avahi_init_proc_title(argc, argv);
#ifdef ENABLE_CHROOT
config.use_chroot = config.use_chroot && config.drop_root;
#endif
if (config.command == DAEMON_HELP) {
help(stdout);
r = 0;
} else if (config.command == DAEMON_VERSION) {
printf("%s "PACKAGE_VERSION"\n", argv0);
r = 0;
} else if (config.command == DAEMON_KILL) {
if (daemon_pid_file_kill_wait(SIGTERM, 5) < 0) {
avahi_log_warn("Failed to kill daemon: %s", strerror(errno));
goto finish;
}
r = 0;
} else if (config.command == DAEMON_RELOAD) {
if (daemon_pid_file_kill(SIGHUP) < 0) {
avahi_log_warn("Failed to kill daemon: %s", strerror(errno));
goto finish;
}
r = 0;
} else if (config.command == DAEMON_CHECK)
r = (daemon_pid_file_is_running() >= 0) ? 0 : 1;
else if (config.command == DAEMON_RUN) {
pid_t pid;
if (getuid() != 0 && config.drop_root) {
avahi_log_error("This program is intended to be run as root.");
goto finish;
}
if ((pid = daemon_pid_file_is_running()) >= 0) {
avahi_log_error("Daemon already running on PID %u", pid);
goto finish;
}
if (load_config_file(&config) < 0)
goto finish;
if (config.daemonize) {
daemon_retval_init();
if ((pid = daemon_fork()) < 0)
goto finish;
else if (pid != 0) {
int ret;
/** Parent **/
if ((ret = daemon_retval_wait(20)) < 0) {
avahi_log_error("Could not receive return value from daemon process.");
goto finish;
}
r = ret;
goto finish;
}
/* Child */
}
if (config.use_syslog || config.daemonize)
daemon_log_use = DAEMON_LOG_SYSLOG;
if (sd_listen_fds(0) <= 0)
if (daemon_close_all(-1) < 0)
avahi_log_warn("Failed to close all remaining file descriptors: %s", strerror(errno));
daemon_reset_sigs(-1);
daemon_unblock_sigs(-1);
if (make_runtime_dir() < 0)
goto finish;
if (config.drop_root) {
#ifdef ENABLE_CHROOT
if (config.use_chroot)
if (avahi_caps_reduce() < 0)
goto finish;
#endif
if (drop_root() < 0)
goto finish;
#ifdef ENABLE_CHROOT
if (config.use_chroot)
if (avahi_caps_reduce2() < 0)
goto finish;
#endif
}
if (daemon_pid_file_create() < 0) {
avahi_log_error("Failed to create PID file: %s", strerror(errno));
if (config.daemonize)
daemon_retval_send(1);
goto finish;
} else
wrote_pid_file = 1;
if (config.set_rlimits)
enforce_rlimits();
chdir("/");
#ifdef ENABLE_CHROOT
if (config.drop_root && config.use_chroot)
if (avahi_chroot_helper_start(argv0) < 0) {
avahi_log_error("failed to start chroot() helper daemon.");
goto finish;
}
#endif
avahi_log_info("%s "PACKAGE_VERSION" starting up.", argv0);
sd_notifyf(0, "STATUS=%s "PACKAGE_VERSION" starting up.", argv0);
avahi_set_proc_title(argv0, "%s: starting up", argv0);
if (run_server(&config) == 0)
r = 0;
avahi_log_info("%s "PACKAGE_VERSION" exiting.", argv0);
sd_notifyf(0, "STATUS=%s "PACKAGE_VERSION" exiting.", argv0);
}
finish:
if (config.daemonize)
daemon_retval_done();
avahi_server_config_free(&config.server_config);
avahi_free(config.config_file);
avahi_strfreev(config.publish_dns_servers);
avahi_strfreev(resolv_conf_name_servers);
avahi_strfreev(resolv_conf_search_domains);
if (wrote_pid_file) {
#ifdef ENABLE_CHROOT
avahi_chroot_helper_unlink(pid_file_proc());
#else
daemon_pid_file_remove();
#endif
}
#ifdef ENABLE_CHROOT
avahi_chroot_helper_shutdown();
#endif
avahi_free(argv0);
return r;
}
int main(int argc, char *argv[])
{
pid_t pid;
/* Reset signal handlers */
if (daemon_reset_sigs(-1) < 0) {
daemon_log(LOG_ERR, "Failed to reset all signal handlers: %s",
strerror(errno));
return 1;
}
/* Unblock signals */
if (daemon_unblock_sigs(-1) < 0) {
daemon_log(LOG_ERR, "Failed to unblock all signals: %s",
strerror(errno));
}
/* Set indetification string for the daemon for both syslog and PID file */
daemon_log_ident = daemon_ident_from_argv0(argv[0]);
daemon_pid_file_ident = daemon_log_ident;
//(LOG_ERR, "The log ident is %s\n",daemon_log_ident);
daemon_pid_file_proc = get_pid_file_proc;
sprintf (image_pid_file, "/var/run/%s.pid", daemon_pid_file_ident);
/* Check if we are called with -k parameter */
if (argc >= 2 && !strcmp(argv[1], "-k")) {
int ret;
/* Kill daemon with SIGTERM */
/* Check if the new function daemon_pid_file_kill_wait() is available,
if it is, use it. */
if ((ret = daemon_pid_file_kill_wait(SIGTERM, 5)) < 0)
daemon_log(LOG_WARNING, "Failed to kill daemon: %s",
strerror(errno));
return ret < 0 ? 1 : 0;
}
/* Check that the daemon is not rung twice a the same time */
if ((pid = daemon_pid_file_is_running()) >= 0) {
daemon_log(LOG_ERR, "Daemon already running on PID file %u", pid);
return 1;
}
/* Prepare for return value passing from the initialization procedure
of the daemon process */
if (daemon_retval_init() < 0) {
daemon_log(LOG_ERR, "Failed to create pipe.");
return 1;
}
/* Do the fork */
if ((pid = daemon_fork()) < 0) {
/* Exit on error */
daemon_retval_done();
return 1;
} else if (pid) { /* The parent */
int ret;
/* Wait for 20 seconds for the return value passed from the daemon
process */
if ((ret = daemon_retval_wait(20)) < 0) {
daemon_log(LOG_ERR, "Count not receive return value from daemon"
"process: %s", strerror(errno));
}
//daemon_log(ret != 0 ? LOG_ERR : LOG_INFO,
// "Daemon returned %i as return value.", ret);
return ret;
} else { /* The daemon */
int fd, quit = 0;
fd_set fds;
pthread_t sock_thread;
pthread_t nl_thread;
/* Close FDs */
if (daemon_close_all(-1) < 0) {
daemon_log(LOG_ERR, "Failed to close all file descriptors: %s",
strerror(errno));
/* Send the error condition to the parent process */
daemon_retval_send(1);
goto finish;
}
/* Create the PID file */
if (daemon_pid_file_create() < 0) {
daemon_log(LOG_ERR, "Could not create PID file (%s).",
strerror(errno));
daemon_retval_send(2);
goto finish;
}
/* Initialize signal handling */
if (daemon_signal_init(SIGINT, SIGTERM, SIGQUIT, SIGHUP, 0) < 0) {
daemon_log(LOG_ERR, "Could not register signal handlers (%s).",
strerror(errno));
daemon_retval_send(3);
goto finish;
}
/* Init task */
init_image_config(argc, argv);
init_netlink();
/* Send OK to parent process */
daemon_retval_send(0);
daemon_log(LOG_INFO, "Sucessfully started");
/* Main task*/
pthread_create(&nl_thread, NULL, (void *)netlink_loop, (void *)NULL);
#if 0
pthread_create(&sock_thread, NULL, (void *)socket_loop, (void *)NULL);
#endif
pthread_create(&sock_thread, NULL, (void *)mq_loop, (void *)NULL);
/* Prepare for select() on the signal fd */
FD_ZERO(&fds);
fd = daemon_signal_fd();
FD_SET(fd, &fds);
while (!quit) {
fd_set fds2 = fds;
/* Wait for an incoming signal */
if (select(FD_SETSIZE, &fds2, 0, 0, 0) < 0) {
/* If we've been interrupted by an incoming signal, continue */
if (errno == EINTR)
continue;
daemon_log(LOG_ERR, "select(): %s", strerror(errno));
break;
}
/* Check if a signal has been recieved */
if (FD_ISSET(fd, &fds2)) {
int sig;
/* Get signal */
if ((sig = daemon_signal_next()) <= 0) {
daemon_log(LOG_ERR, "daemon_signal_next() failed: %s",
strerror(errno));
break;
}
/* Dispatch signal */
switch (sig) {
case SIGINT:
case SIGQUIT:
case SIGTERM:
daemon_log(LOG_WARNING, "Got SIGINT, SIGQUIT or"
"SIGTERM.");
if (nl_image_config.nl_connected == 1) {
nl_image_config.nl_connected = 0;
if (nl_send_image_session_cmd(
IMAGE_SESSION_CMD_DISCONNECT) < 0) {
printf("Failed to remove connection with"
"kernel!\n");
}
}
quit = 1;
break;
case SIGHUP:
daemon_log(LOG_INFO, "Got a HUP");
daemon_exec("/", NULL, "/bin/ls", "ls", (char*) NULL);
break;
}
}
}
/* Do a cleanup */
finish:
delete_pid_file(IMAGE_SERVER_PROC);
daemon_log(LOG_INFO, "Exiting...");
daemon_retval_send(255);
daemon_signal_done();
daemon_pid_file_remove();
return 0;
}
}
/** Punto de entrada de la aplicacion de navegacion.
* @return Estado de la aplicacion al terminar.
*/
int main(int argc, char *argv[]) {
pid_t pid;
/* Reset signal handlers */
if (daemon_reset_sigs(-1) < 0) {
daemon_log(LOG_ERR, "Failed to reset all signal handlers: %s",
strerror(errno));
return 1;
}
/* Unblock signals */
if (daemon_unblock_sigs(-1) < 0) {
daemon_log(LOG_ERR, "Failed to unblock all signals: %s",
strerror(errno));
return 1;
}
/* Set indetification string for the daemon for both syslog and PID file */
daemon_pid_file_ident = daemon_log_ident = daemon_ident_from_argv0(argv[0]);
/* Check if we are called with -k parameter */
if (argc >= 2 && !strcmp(argv[1], "-k")) {
int ret;
/* Kill daemon with SIGTERM */
/* Check if the new function daemon_pid_file_kill_wait() is available, if it is, use it. */
if ((ret = daemon_pid_file_kill_wait(SIGTERM, 5)) < 0)
daemon_log(LOG_WARNING, "Failed to kill daemon: %s",
strerror(errno));
return ret < 0 ? 1 : 0;
}
/* Check that the daemon is not rung twice a the same time */
if ((pid = daemon_pid_file_is_running()) >= 0) {
daemon_log(LOG_ERR, "Daemon already running on PID file %u", pid);
return 1;
}
/* Prepare for return value passing from the initialization procedure of the daemon process */
if (daemon_retval_init() < 0) {
daemon_log(LOG_ERR, "Failed to create pipe.");
return 1;
}
/* Do the fork */
if ((pid = daemon_fork()) < 0) {
/* Exit on error */
daemon_retval_done();
return 1;
} else if (pid) { /* The parent */
int ret;
/* Wait for 20 seconds for the return value passed from the daemon process */
if ((ret = daemon_retval_wait(20)) < 0) {
daemon_log(LOG_ERR,
"Could not recieve return value from daemon process: %s",
strerror(errno));
return 255;
}
daemon_log(ret != 0 ? LOG_ERR : LOG_INFO,
"Daemon returned %i as return value.", ret);
return ret;
} else { /* The daemon */
int fd, quit = 0;
fd_set fds;
char * config_file;
config_t cfg;
config_setting_t *setting;
/* Base de Datos de Tiempo Real */
struct rtdb rtdb;
/* Controlador de estado de la MTi-G */
struct mti_g mti_g;
struct time_tracker tracker;
struct sharksoft sharksoft;
/* Close FDs */
if (daemon_close_all(-1) < 0) {
daemon_log(LOG_ERR, "Failed to close all file descriptors: %s",
strerror(errno));
/* Send the error condition to the parent process */
daemon_retval_send(1);
goto finish;
}
/* Create the PID file */
if (daemon_pid_file_create() < 0) {
daemon_log(LOG_ERR, "Could not create PID file (%s).",
strerror(errno));
daemon_retval_send(2);
goto finish;
}
/* Initialize signal handling */
if (daemon_signal_init(SIGINT, SIGTERM, SIGQUIT, SIGHUP, 0) < 0) {
daemon_log(LOG_ERR, "Could not register signal handlers (%s).",
strerror(errno));
daemon_retval_send(3);
goto finish;
}
/*... do some further init work here */
daemon_log(LOG_INFO, "Starting");
/* cargar la configuración de la aplicación */
config_init(&cfg);
config_file = malloc(strlen(CONFIG_PATH) + strlen(CONFIG_FILE) + 1);
assert(config_file != NULL);
strcpy(config_file, CONFIG_PATH);
strcpy(config_file + strlen(CONFIG_PATH), CONFIG_FILE);
/* Read the file. If there is an error, report it and exit. */
if (!config_read_file(&cfg, CONFIG_FILE)) {
daemon_log(LOG_ERR, "%s:%d - %s\n", config_error_file(&cfg),
config_error_line(&cfg), config_error_text(&cfg));
daemon_retval_send(4);
goto finish;
}
daemon_log(LOG_INFO, "Config file readed");
/* Inicializar el controlador de estado de la MTi-G, enlazando
* la RTDB como area de almacenamiento */
setting = config_lookup(&cfg, "mti_g");
mti_g_init(&mti_g, setting, &(rtdb.imu), &(rtdb.gps));
daemon_log(LOG_INFO, "MTi-G state controller inited");
setting = config_lookup(&cfg, "time_tracker");
time_tracker_init(&tracker, setting);
daemon_log(LOG_INFO, "Time Tracker service inited");
setting = config_lookup(&cfg, "sharksoft");
sharksoft_init(&sharksoft, setting, &(rtdb.imu), &(rtdb.gps));
daemon_log(LOG_INFO, "Sharksoft data provider service inited");
/* Send OK to parent process */
daemon_retval_send(0);
daemon_log(LOG_INFO, "Sucessfully started");
/* Prepare for select() on the signals */
FD_ZERO(&fds);
fd = daemon_signal_fd();
FD_SET(fd, &fds);
FD_SET(mti_g.fd, &fds);
FD_SET(sharksoft.fd, &fds);
while (!quit) {
fd_set fds2 = fds;
/* Wait for an incoming signal */
if (select(FD_SETSIZE, &fds2, 0, 0, 0) < 0) {
/* If we've been interrupted by an incoming signal, continue */
if (errno == EINTR)
continue;
daemon_log(LOG_ERR, "select(): %s", strerror(errno));
break;
}
/* Check if a signal has been recieved */
if (FD_ISSET(fd, &fds2)) {
int sig;
/* Get signal */
if ((sig = daemon_signal_next()) <= 0) {
daemon_log(LOG_ERR, "daemon_signal_next() failed: %s",
strerror(errno));
break;
}
/* Dispatch signal */
switch (sig) {
case SIGINT:
case SIGQUIT:
case SIGTERM:
daemon_log(LOG_WARNING, "Got SIGINT, SIGQUIT or SIGTERM.");
quit = 1;
break;
case SIGHUP:
daemon_log(LOG_INFO, "Got a HUP");
daemon_exec("/", NULL, "/bin/ls", "ls", (char*) NULL);
break;
}
}
/* Procesar señales desde la MTi-G */
if (FD_ISSET(mti_g.fd, &fds2)) {
mti_g_handle_request(&mti_g);
//sharksoft_handle_getdata(&sharksoft);
//time_tracker_handle(&tracker);
}
/* Procesar señales desde el HMI Sharksoft */
if (FD_ISSET(sharksoft.fd, &fds2)) {
//time_tracker_handle(&tracker);
sharksoft_handle_request(&sharksoft);
}
}
time_tracker_dispose(&tracker);
config_destroy(&cfg);
/* Do a cleanup */
finish: daemon_log(LOG_INFO, "Exiting...");
daemon_retval_send(255);
daemon_signal_done();
daemon_pid_file_remove();
return 0;
}
}
/* Takes ownership of startup */
static gboolean
infinoted_main_run(InfinotedStartup* startup,
GError** error)
{
InfinotedRun* run;
InfinotedSignal* sig;
#ifdef LIBINFINITY_HAVE_LIBDAEMON
mode_t prev_umask;
pid_t pid;
int saved_errno;
#endif
/* infinoted_run_new() takes ownership of startup */
run = infinoted_run_new(startup, error);
if(run == NULL)
{
infinoted_startup_free(startup);
return FALSE;
}
#ifdef LIBINFINITY_HAVE_LIBDAEMON
if(startup->options->daemonize)
{
prev_umask = umask(0777);
if(daemon_retval_init() == -1)
{
infinoted_run_free(run);
return FALSE; /* libdaemon already wrote an error message */
}
pid = daemon_fork();
if(pid < 0)
{
/* Translators: fork as in "fork into the background" */
infinoted_util_set_errno_error(error, errno, _("Failed to fork"));
infinoted_run_free(run);
daemon_retval_done();
return FALSE;
}
else if(pid > 0)
{
infinoted_run_free(run);
saved_errno = daemon_retval_wait(5);
if(saved_errno == 0)
{
return TRUE;
}
if(saved_errno == -1)
{
infinoted_util_set_errno_error(error, errno,
_("Failed to wait for daemonized child's return value"));
return FALSE;
}
else
{
/* on -1, the child process would have subtracted one from
* errno before passing it back to us. */
if(saved_errno < 0) ++saved_errno;
infinoted_util_set_errno_error(
error, saved_errno, _("Failed to create PID file"));
return FALSE;
}
}
else
{
infinoted_util_daemon_set_global_pid_file_proc();
if(daemon_pid_file_create() != 0)
{
infinoted_util_daemon_set_local_pid_file_proc();
if(daemon_pid_file_create() != 0)
{
if(daemon_pid_file_create() != 0)
{
saved_errno = errno;
infinoted_util_set_errno_error(
error,
saved_errno,
_("Failed to create PID file")
);
if(saved_errno < 0) --saved_errno;
daemon_retval_send(saved_errno);
infinoted_run_free(run);
return FALSE;
}
}
}
daemon_retval_send(0);
}
/* libdaemon sets the umask to either 0777 (< 0.14) or 0077 (>= 0.14).
* We don't want either of that, to make sure the directory tree is
* always readable by us and potentially by others (for example, a
* webserver providing read access to the documents). Therefore, reset
* the umask here to what it previously was, so the system administrator
* can define the umask by setting it before launching infinoted.
* See also http://gobby.0x539.de/trac/ticket/617. */
umask(prev_umask);
}
#endif
sig = infinoted_signal_register(run);
/* Now start the server. It can later be stopped by signals. */
infinoted_run_start(run);
infinoted_signal_unregister(sig);
#ifdef LIBINFINITY_HAVE_LIBDAEMON
/* startup might be invalid at this point in case a config reload happened,
* so use run->startup instead (which is revalidated by config reload). */
if(run->startup->options->daemonize)
daemon_pid_file_remove();
#endif
infinoted_run_free(run);
return TRUE;
}
void work(void) {
fd_set fds;
int sigfd;
static char log_ident[256];
snprintf(log_ident, sizeof(log_ident), "ifplugd");
daemon_log_ident = log_ident;
daemon_log(LOG_INFO, "ifplugd "VERSION" initializing, using NETLINK device monitoring");
if (daemon_pid_file_create() < 0) {
daemon_log(LOG_ERR, "Could not create PID file %s.", daemon_pid_file_proc());
goto finish;
}
if (daemon_signal_init(SIGINT, SIGTERM, SIGQUIT, SIGHUP, SIGCHLD, SIGUSR1, SIGUSR2, -1) < 0) {
daemon_log(LOG_ERR, "Could not register signal handler: %s", strerror(errno));
goto finish;
}
if ((netlink = socket(AF_LOCAL, SOCK_DGRAM, 0)) < 0) {
daemon_log(LOG_ERR, "socket(): %s", strerror(errno));
goto finish;
}
rbus = rbus_init("unix!/tmp/ifplugd.9p");
rbus->rbus.childs = &root_children[0];
discover(netlink);
if (nlapi_open(RTMGRP_LINK) < 0)
goto finish;
if (ifmonitor_init(ifmonitor_cb) < 0)
goto finish;
FD_ZERO(&fds);
sigfd = daemon_signal_fd();
FD_SET(sigfd, &fds);
FD_SET(nlapi_fd, &fds);
for (;;) {
struct interface_state *iface;
fd_set qfds = fds;
struct timeval tv;
IxpConn *c;
for(c = rbus->srv->conn; c; c = c->next) {
if(c->read) {
FD_SET(c->fd, &qfds);
}
}
tv.tv_sec = polltime;
tv.tv_usec = 0;
if (select(FD_SETSIZE, &qfds, NULL, NULL, &tv) < 0) {
if (errno == EINTR)
continue;
daemon_log(LOG_ERR, "select(): %s", strerror(errno));
goto finish;
}
//daemon_log(LOG_INFO, "select()");
for(c = rbus->srv->conn; c; c = c->next) {
if(c->read && FD_ISSET(c->fd, &qfds)) {
c->read(c);
}
}
if (FD_ISSET(nlapi_fd, &qfds)) {
if (nlapi_work(0) < 0)
goto finish;
}
for(iface = interface; iface; iface=iface->next) {
if(! is_iface_available(netlink, iface->name)) {
drop_interface(iface);
continue;
}
detect_beat(netlink, iface);
status_change(iface);
}
if (FD_ISSET(sigfd, &qfds)) {
int sig;
if ((sig = daemon_signal_next()) < 0) {
daemon_log(LOG_ERR, "daemon_signal_next(): %s", strerror(errno));
goto finish;
}
switch (sig) {
case SIGINT:
case SIGTERM:
goto cleanup;
case SIGQUIT:
goto finish;
case SIGCHLD:
break;
case SIGHUP:
break;
default:
daemon_log(LOG_INFO, "Ignoring unknown signal %s", strsignal(sig));
break;
}
}
}
cleanup:
finish:
if (netlink >= 0)
close(netlink);
nlapi_close();
daemon_pid_file_remove();
daemon_signal_done();
daemon_log(LOG_INFO, "Exiting.");
}
int main(int argc, char *argv[])
{
int index;
int c;
std::string ptp_dev("tun0");
std::string app_name("tunnel");
std::string endpoint("dtn:none");
unsigned int lifetime = 60;
bool daemonize = false;
bool stop_daemon = false;
std::string pidfile;
bool throughput = false;
#ifdef HAVE_LIBDAEMON
while ((c = getopt (argc, argv, "td:s:l:hDkp:")) != -1)
#else
while ((c = getopt (argc, argv, "td:s:l:h")) != -1)
#endif
switch (c)
{
#ifdef HAVE_LIBDAEMON
case 'D':
daemonize = true;
break;
case 'k':
daemonize = true;
stop_daemon = true;
break;
case 'p':
pidfile = optarg;
break;
#endif
case 'd':
ptp_dev = optarg;
break;
case 't':
throughput = true;
break;
case 's':
app_name = optarg;
break;
case 'l':
lifetime = atoi(optarg);
break;
default:
print_help(argv[0]);
return 1;
}
int optindex = 0;
for (index = optind; index < argc; ++index)
{
switch (optindex)
{
case 0:
endpoint = std::string(argv[index]);
break;
}
optindex++;
}
// print help if not enough parameters are set
if (!stop_daemon && (optindex < 1)) { print_help(argv[0]); exit(0); }
// catch process signals
ibrcommon::SignalHandler sighandler(term);
sighandler.handle(SIGINT);
sighandler.handle(SIGTERM);
sighandler.handle(SIGQUIT);
//initialize sighandler after possible exit call
sighandler.initialize();
// logging options
//const unsigned char logopts = ibrcommon::Logger::LOG_DATETIME | ibrcommon::Logger::LOG_LEVEL;
const unsigned char logopts = 0;
// error filter
const unsigned char logerr = ibrcommon::Logger::LOGGER_ERR | ibrcommon::Logger::LOGGER_CRIT;
// logging filter, everything but debug, err and crit
const unsigned char logstd = ibrcommon::Logger::LOGGER_ALL ^ (ibrcommon::Logger::LOGGER_DEBUG | logerr);
// syslog filter, everything but DEBUG and NOTICE
const unsigned char logsys = ibrcommon::Logger::LOGGER_ALL ^ (ibrcommon::Logger::LOGGER_DEBUG | ibrcommon::Logger::LOGGER_NOTICE);
#ifdef HAVE_LIBDAEMON
if (daemonize) {
// enable syslog logging
ibrcommon::Logger::enableSyslog(argv[0], LOG_PID, LOG_DAEMON, logsys);
} else
#endif
{
// add logging to the cout
ibrcommon::Logger::addStream(std::cout, logstd, logopts);
// add logging to the cerr
ibrcommon::Logger::addStream(std::cerr, logerr, logopts);
}
#ifdef HAVE_LIBDAEMON
if (daemonize)
{
#ifdef HAVE_DAEMON_RESET_SIGS
/* Reset signal handlers */
if (daemon_reset_sigs(-1) < 0) {
IBRCOMMON_LOGGER_TAG("Core", error) << "Failed to reset all signal handlers: " << strerror(errno) << IBRCOMMON_LOGGER_ENDL;
return 1;
}
/* Unblock signals */
if (daemon_unblock_sigs(-1) < 0) {
IBRCOMMON_LOGGER_TAG("Core", error) << "Failed to unblock all signals: " << strerror(errno) << IBRCOMMON_LOGGER_ENDL;
return 1;
}
#endif
pid_t pid;
/* Set identification string for the daemon for both syslog and PID file */
daemon_pid_file_ident = daemon_log_ident = daemon_ident_from_argv0(argv[0]);
/* set the pid file path */
if (pidfile.length() > 0) {
__daemon_pidfile__ = new char[pidfile.length() + 1];
::strcpy(__daemon_pidfile__, pidfile.c_str());
daemon_pid_file_proc = __daemon_pid_file_proc__;
}
/* Check if we are called with -k parameter */
if (stop_daemon)
{
int ret;
/* Kill daemon with SIGTERM */
/* Check if the new function daemon_pid_file_kill_wait() is available, if it is, use it. */
if ((ret = daemon_pid_file_kill_wait(SIGTERM, 5)) < 0)
IBRCOMMON_LOGGER_TAG("Core", warning) << "Failed to kill daemon: " << strerror(errno) << IBRCOMMON_LOGGER_ENDL;
return ret < 0 ? 1 : 0;
}
/* Check that the daemon is not rung twice a the same time */
if ((pid = daemon_pid_file_is_running()) >= 0) {
IBRCOMMON_LOGGER_TAG("Core", error) << "Daemon already running on PID file " << pid << IBRCOMMON_LOGGER_ENDL;
return 1;
}
/* Prepare for return value passing from the initialization procedure of the daemon process */
if (daemon_retval_init() < 0) {
IBRCOMMON_LOGGER_TAG("Core", error) << "Failed to create pipe." << IBRCOMMON_LOGGER_ENDL;
return 1;
}
/* Do the fork */
if ((pid = daemon_fork()) < 0) {
/* Exit on error */
daemon_retval_done();
return 1;
} else if (pid) { /* The parent */
int ret;
/* Wait for 20 seconds for the return value passed from the daemon process */
if ((ret = daemon_retval_wait(20)) < 0) {
IBRCOMMON_LOGGER_TAG("Core", error) << "Could not recieve return value from daemon process: " << strerror(errno) << IBRCOMMON_LOGGER_ENDL;
return 255;
}
return ret;
} else { /* The daemon */
/* Close FDs */
if (daemon_close_all(-1) < 0) {
IBRCOMMON_LOGGER_TAG("Core", error) << "Failed to close all file descriptors: " << strerror(errno) << IBRCOMMON_LOGGER_ENDL;
/* Send the error condition to the parent process */
daemon_retval_send(1);
/* Do a cleanup */
daemon_retval_send(255);
daemon_signal_done();
daemon_pid_file_remove();
return -1;
}
/* Create the PID file */
if (daemon_pid_file_create() < 0) {
IBRCOMMON_LOGGER_TAG("Core", error) << "Could not create PID file ( " << strerror(errno) << ")." << IBRCOMMON_LOGGER_ENDL;
daemon_retval_send(2);
/* Do a cleanup */
daemon_retval_send(255);
daemon_signal_done();
daemon_pid_file_remove();
return -1;
}
/* Send OK to parent process */
daemon_retval_send(0);
}
}
#endif
IBRCOMMON_LOGGER_TAG("Core", info) << "IBR-DTN IP <-> Bundle Tunnel" << IBRCOMMON_LOGGER_ENDL;
// create a connection to the dtn daemon
ibrcommon::vaddress addr("localhost", 4550);
ibrcommon::socketstream conn(new ibrcommon::tcpsocket(addr));
try {
// set-up tun2bundle gateway
TUN2BundleGateway gateway(app_name, conn, ptp_dev);
_gateway = &gateway;
IBRCOMMON_LOGGER_TAG("Core", info) << "Local: " << app_name << IBRCOMMON_LOGGER_ENDL;
IBRCOMMON_LOGGER_TAG("Core", info) << "Peer: " << endpoint << IBRCOMMON_LOGGER_ENDL;
IBRCOMMON_LOGGER_TAG("Core", info) << "Device: " << gateway.getDeviceName() << IBRCOMMON_LOGGER_ENDL;
IBRCOMMON_LOGGER_TAG("Core", notice) << IBRCOMMON_LOGGER_ENDL;
IBRCOMMON_LOGGER_TAG("Core", notice) << "Now you need to set-up the ip tunnel. You can use commands like this:" << IBRCOMMON_LOGGER_ENDL;
IBRCOMMON_LOGGER_TAG("Core", notice) << "# sudo ip link set " << gateway.getDeviceName() << " up mtu 65535" << IBRCOMMON_LOGGER_ENDL;
IBRCOMMON_LOGGER_TAG("Core", notice) << "# sudo ip addr add 10.0.0.1/24 dev " << gateway.getDeviceName() << IBRCOMMON_LOGGER_ENDL;
IBRCOMMON_LOGGER_TAG("Core", notice) << IBRCOMMON_LOGGER_ENDL;
timer_t timerid;
struct sigevent sev;
if (!daemonize && throughput) {
// enable throughput timer
signal(SIGRTMIN, timer_display_throughput);
sev.sigev_notify = SIGEV_SIGNAL;
sev.sigev_signo = SIGRTMIN;
sev.sigev_value.sival_ptr = &timerid;
// create a timer
timer_create(CLOCK_MONOTONIC, &sev, &timerid);
// arm the timer
struct itimerspec its;
size_t freq_nanosecs = 200000000;
its.it_value.tv_sec = freq_nanosecs / 1000000000;;
its.it_value.tv_nsec = freq_nanosecs % 1000000000;
its.it_interval.tv_sec = its.it_value.tv_sec;
its.it_interval.tv_nsec = its.it_value.tv_nsec;
if (timer_settime(timerid, 0, &its, NULL) == -1) {
IBRCOMMON_LOGGER_TAG("Core", error) << "Timer set failed." << IBRCOMMON_LOGGER_ENDL;
}
}
// destination
dtn::data::EID eid(endpoint);
while (m_running)
{
gateway.process(eid, lifetime);
}
gateway.shutdown();
} catch (const ibrcommon::Exception &ex) {
if (m_running) {
IBRCOMMON_LOGGER_TAG("Core", error) << ex.what() << IBRCOMMON_LOGGER_ENDL;
return -1;
}
}
#ifdef HAVE_LIBDAEMON
if (daemonize) {
/* Do a cleanup */
IBRCOMMON_LOGGER_TAG("Core", info) << "Stopped " << app_name << IBRCOMMON_LOGGER_ENDL;
daemon_retval_send(255);
daemon_signal_done();
daemon_pid_file_remove();
} else
#endif
{
std::cout << std::endl;
}
return 0;
}
void work(void) {
interface_status_t status;
int fd = -1;
fd_set fds;
int sigfd;
time_t t = 0;
int send_retval = 1;
int paused = 0;
static char log_ident[256];
snprintf(log_ident, sizeof(log_ident), "ifplugd(%s)", interface);
daemon_log_ident = log_ident;
daemon_log(LOG_INFO, "ifplugd "VERSION" initializing%s.", use_ifmonitor ? ", using NETLINK device monitoring" : "");
if (daemon_pid_file_create() < 0) {
daemon_log(LOG_ERR, "Could not create PID file %s.", daemon_pid_file_proc());
goto finish;
}
if (daemon_signal_init(SIGINT, SIGTERM, SIGQUIT, SIGHUP, SIGCHLD, SIGUSR1, SIGUSR2, -1) < 0) {
daemon_log(LOG_ERR, "Could not register signal handler: %s", strerror(errno));
goto finish;
}
switch (api_mode) {
case API_ETHTOOL: detect_beat_func = interface_detect_beat_ethtool; break;
case API_MII: detect_beat_func = interface_detect_beat_mii; break;
case API_PRIVATE: detect_beat_func = interface_detect_beat_priv; break;
case API_WLAN: detect_beat_func = interface_detect_beat_wlan; break;
case API_IFF: detect_beat_func = interface_detect_beat_iff; break;
default:
detect_beat_func = detect_beat_auto;
interface_do_message = 0;
break;
}
if ((fd = socket(AF_INET, SOCK_DGRAM, 0)) < 0) {
daemon_log(LOG_ERR, "socket(): %s", strerror(errno));
goto finish;
}
if (use_ifmonitor) {
int b;
if ((b = is_iface_available(fd, interface)) < 0) {
daemon_log(LOG_ERR, "Failed to check interface availabilty!");
goto finish;
}
disabled = !b;
if (nlapi_open(RTMGRP_LINK) < 0)
goto finish;
if (ifmonitor_init(ifmonitor_cb) < 0)
goto finish;
} else
disabled = 0;
if (!disabled) {
if (welcome_iface(fd, interface) < 0)
goto finish;
}
if ((status = detect_beat(fd, interface)) == IFSTATUS_ERR)
goto finish;
daemon_log(LOG_INFO, "Initialization complete, link beat %sdetected%s.", status == IFSTATUS_UP ? "" : "not ", use_ifmonitor ? (disabled ? ", interface disabled" : ", interface enabled") : "");
beep(status == IFSTATUS_UP ? 0 : 1);
if ((!no_startup_script && status == IFSTATUS_UP) || initial_down)
if (action(status) < 0)
goto finish;
if (send_retval && daemonize && wait_on_fork) {
char c = status == IFSTATUS_UP ? 2 : (status == IFSTATUS_DOWN ? 3 : 1);
daemon_retval_send(c);
send_retval = 0;
}
FD_ZERO(&fds);
sigfd = daemon_signal_fd();
FD_SET(sigfd, &fds);
if (use_ifmonitor)
FD_SET(nlapi_fd, &fds);
for (;;) {
interface_status_t s;
fd_set qfds = fds;
int d;
struct timeval tv;
tv.tv_sec = polltime;
tv.tv_usec = 0;
if (select(FD_SETSIZE, &qfds, NULL, NULL, &tv) < 0) {
if (errno == EINTR)
continue;
daemon_log(LOG_ERR, "select(): %s", strerror(errno));
goto finish;
}
//daemon_log(LOG_INFO, "select()");
d = disabled;
s = status;
if (use_ifmonitor) {
if (FD_ISSET(nlapi_fd, &qfds)) {
if (nlapi_work(0) < 0)
goto finish;
}
if (d && !disabled) {
daemon_log(LOG_INFO, "Interface enabled");
welcome_iface(fd, interface);
status = IFSTATUS_DOWN;
}
if (!d && disabled) {
daemon_log(LOG_INFO, "Interface disabled");
status = IFSTATUS_DOWN;
}
}
if (!paused && !disabled) {
//daemon_log(LOG_INFO, "detect");
if ((status = detect_beat(fd, interface)) == IFSTATUS_ERR) {
if (!use_ifmonitor)
goto finish;
status = IFSTATUS_DOWN;
}
}
if (status != s) {
daemon_log(LOG_INFO, "Link beat %s.", status == IFSTATUS_DOWN ? "lost" : "detected");
beep(status == IFSTATUS_UP ? 0 : 1);
if (t)
t = 0;
else {
t = time(NULL);
if (status == IFSTATUS_UP)
t += delay_up;
if (status == IFSTATUS_DOWN)
t += delay_down;
}
}
if (FD_ISSET(sigfd, &qfds)) {
int sig;
if ((sig = daemon_signal_next()) < 0) {
daemon_log(LOG_ERR, "daemon_signal_next(): %s", strerror(errno));
goto finish;
}
switch (sig) {
case SIGINT:
case SIGTERM:
goto cleanup;
case SIGQUIT:
goto finish;
case SIGCHLD:
break;
case SIGHUP:
daemon_log(LOG_INFO, "SIGHUP: %s, link detected on %s: %s", paused ? "Suspended" : "Running", interface, status == IFSTATUS_DOWN ? "no" : "yes");
if (use_ifmonitor)
daemon_log(LOG_INFO, "SIGHUP: Interface %s", disabled ? "disabled" : "enabled");
break;
case SIGUSR1:
daemon_log(LOG_INFO, "SIGUSR1: Daemon suspended (#%i)", ++paused);
break;
case SIGUSR2:
if (paused > 0) {
daemon_log(LOG_INFO, "SIGUSR2: Daemon resumed (#%i)", paused);
paused --;
}
break;
default:
daemon_log(LOG_INFO, "Ignoring unknown signal %s", strsignal(sig));
break;
}
}
if (t && t < time(NULL)) {
t = 0;
if (action(status) < 0)
goto finish;
}
}
cleanup:
if (!no_shutdown_script && (status == IFSTATUS_UP || (status == IFSTATUS_DOWN && t))) {
setenv(IFPLUGD_ENV_PREVIOUS, strstatus(status), 1);
setenv(IFPLUGD_ENV_CURRENT, strstatus(-1), 1);
action(IFSTATUS_DOWN);
beep(1);
}
finish:
if (fd >= 0)
close(fd);
if (use_ifmonitor)
nlapi_close();
if (send_retval && daemonize && wait_on_fork)
daemon_retval_send(255);
daemon_pid_file_remove();
daemon_signal_done();
daemon_log(LOG_INFO, "Exiting.");
}
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;
}
/**
* Read the config file, determine if we should daemonize or not,
* and set up libevent dispatches.
*/
int main(int argc, char *argv[]) {
int cmdline_debug_level = 0;
int foreground = 0;
int option;
pid_t pid;
int kill=0;
int ret;
/* set some sane config defaults */
memset((void*)&config, 0, sizeof(gopher_conf_t));
config.port = 70;
config.base_dir = ".";
config.socket_backlog = 5;
config.config_file = DEFAULT_CONFIGFILE;
while((option = getopt(argc, argv, "d:c:fp:s:k")) != -1) {
switch(option) {
case 'd':
cmdline_debug_level = atoi(optarg);
if(cmdline_debug_level < 1 || cmdline_debug_level > 5) {
ERROR("Debug level must be 1-5 (default %d)", DEFAULT_DEBUGLEVEL);
usage_quit(argv[0]);
}
break;
case 'c':
config.config_file = optarg;
break;
case 'f':
foreground = 1;
break;
case 'p':
config.port = atoi(optarg);
break;
case 's':
config.base_dir = optarg;
case 'k':
kill = 1;
break;
default:
usage_quit(argv[0]);
}
}
debug_level(cmdline_debug_level ? cmdline_debug_level : DEFAULT_DEBUGLEVEL);
/* kill before config, so we don't have to specify a config file */
daemon_pid_file_ident = daemon_ident_from_argv0(argv[0]);
/* kill? */
if(kill) {
if((ret = daemon_pid_file_kill_wait(SIGTERM, 5)) < 0) {
ERROR("Failed to kill daemon: %s", strerror(errno));
}
exit(ret < 0 ? EXIT_FAILURE : EXIT_SUCCESS);
}
if((pid = daemon_pid_file_is_running()) >= 0) {
ERROR("Daemon already running as pid %u", pid);
exit(EXIT_FAILURE);
}
/* TODO: read the config file and verify sufficient config */
debug_level(cmdline_debug_level);
/* daemonize, or check for background daemon */
if(!foreground) {
debug_output(DBG_OUTPUT_SYSLOG, "evgopherd");
if(daemon_retval_init() < 0) {
ERROR("Could not set up daemon pipe");
exit(EXIT_FAILURE);
}
if((pid = daemon_fork()) < 0) {
daemon_retval_done();
ERROR("Forking error: %s", strerror(errno));
exit(EXIT_FAILURE);
} else if (pid) { /* parent */
if((ret = daemon_retval_wait(5)) < 0) {
ERROR("Could not receive startup retval from daemon process: %s", strerror(errno));
exit(EXIT_FAILURE);
}
if(ret > 0)
ERROR("Daemon declined to start. Error: %d\n", ret);
exit(ret == 0 ? EXIT_SUCCESS :EXIT_FAILURE);
}
}
if(daemon_signal_init(SIGINT, SIGTERM, SIGQUIT, SIGHUP, SIGPIPE, 0) < 0) {
ERROR("Could not set up signal handlers: %s", strerror(errno));
goto finish;
}
if(!foreground) {
if(daemon_pid_file_create() < 0) {
ERROR("Could not create pidfile: %s", strerror(errno));
if(!foreground)
daemon_retval_send(2);
goto finish;
}
/* should close handles here */
daemon_retval_send(0); /* started up to the point that we can rely on syslog */
}
WARN("Daemon started");
/* need to fork off a watchdog process */
while(!g_quitflag) {
/* fork and wait */
pid_t pid = fork();
if(pid == -1) {
ERROR("Error forking child process. Aborting");
g_quitflag = 1;
} else if(pid == 0) { /* child */
do_child_process();
} else { /* parent */
int status;
waitpid(pid, &status, 0);
if(WIFEXITED(status) && WEXITSTATUS(status)) {
/* exited with error */
ERROR("Error initializing child process. Aborting");
g_quitflag=1;
} else if(!WIFEXITED(status)) {
ERROR("Child process (%d) crashed. Restarting.", pid);
} else {
/* graceful exit... we've obviously terminated */
g_quitflag = 1;
}
}
}
WARN("Daemon exiting gracefully");
finish:
daemon_signal_done();
daemon_pid_file_remove();
return EXIT_SUCCESS;
}
