-#ifndef HAVE_MINGW
- len = xasprintf(&scriptname, "\"%s/%s\"", confbase, name);
-#else
- len = xasprintf(&scriptname, "\"%s/%s.bat\"", confbase, name);
-#endif
- if(len < 0)
- return false;
-
- scriptname[len - 1] = '\0';
-
-#ifndef HAVE_TUNEMU
- /* First check if there is a script */
-
- if(access(scriptname + 1, F_OK)) {
- free(scriptname);
- return true;
- }
-#endif
-
- ifdebug(STATUS) logger(LOG_INFO, "Executing script %s", name);
-
-#ifdef HAVE_PUTENV
- /* Set environment */
-
- for(i = 0; envp[i]; i++)
- putenv(envp[i]);
-#endif
-
- scriptname[len - 1] = '\"';
- status = system(scriptname);
-
- free(scriptname);
-
- /* Unset environment */
-
- for(i = 0; envp[i]; i++) {
- char *e = strchr(envp[i], '=');
- if(e) {
- char p[e - envp[i] + 1];
- strncpy(p, envp[i], e - envp[i]);
- p[e - envp[i]] = '\0';
- putenv(p);
- }
- }
-
-#ifdef WEXITSTATUS
- if(status != -1) {
- if(WIFEXITED(status)) { /* Child exited by itself */
- if(WEXITSTATUS(status)) {
- logger(LOG_ERR, "Script %s exited with non-zero status %d",
- name, WEXITSTATUS(status));
- return false;
- }
- } else if(WIFSIGNALED(status)) { /* Child was killed by a signal */
- logger(LOG_ERR, "Script %s was killed by signal %d (%s)",
- name, WTERMSIG(status), strsignal(WTERMSIG(status)));
- return false;
- } else { /* Something strange happened */
- logger(LOG_ERR, "Script %s terminated abnormally", name);
- return false;
- }
- } else {
- logger(LOG_ERR, "System call `%s' failed: %s", "system", strerror(errno));
- return false;
- }
-#endif
-#endif
- return true;
-}
-
-
-/*
- Signal handlers.
-*/
-
-#ifndef HAVE_MINGW
-static RETSIGTYPE sigterm_handler(int a) {
- logger(LOG_NOTICE, "Got %s signal", "TERM");
- if(running)
- running = false;
- else
- exit(1);
-}
-
-static RETSIGTYPE sigquit_handler(int a) {
- logger(LOG_NOTICE, "Got %s signal", "QUIT");
- if(running)
- running = false;
- else
- exit(1);
-}
-
-static RETSIGTYPE fatal_signal_square(int a) {
- logger(LOG_ERR, "Got another fatal signal %d (%s): not restarting.", a,
- strsignal(a));
- exit(1);
-}
-
-static RETSIGTYPE fatal_signal_handler(int a) {
- struct sigaction act;
- logger(LOG_ERR, "Got fatal signal %d (%s)", a, strsignal(a));
-
- if(do_detach) {
- logger(LOG_NOTICE, "Trying to re-execute in 5 seconds...");
-
- act.sa_handler = fatal_signal_square;
- act.sa_mask = emptysigset;
- act.sa_flags = 0;
- sigaction(SIGSEGV, &act, NULL);
-
- close_network_connections();
- sleep(5);
- remove_pid(pidfilename);
- execvp(g_argv[0], g_argv);
- } else {
- logger(LOG_NOTICE, "Not restarting.");
- exit(1);
- }
-}
-
-static RETSIGTYPE sighup_handler(int a) {
- logger(LOG_NOTICE, "Got %s signal", "HUP");
- sighup = true;
-}
-
-static RETSIGTYPE sigint_handler(int a) {
- logger(LOG_NOTICE, "Got %s signal", "INT");
-
- if(saved_debug_level != -1) {
- logger(LOG_NOTICE, "Reverting to old debug level (%d)",
- saved_debug_level);
- debug_level = saved_debug_level;
- saved_debug_level = -1;
- } else {
- logger(LOG_NOTICE,
- "Temporarily setting debug level to 5. Kill me with SIGINT again to go back to level %d.",
- debug_level);
- saved_debug_level = debug_level;
- debug_level = 5;
- }
-}
-
-static RETSIGTYPE sigalrm_handler(int a) {
- logger(LOG_NOTICE, "Got %s signal", "ALRM");
- sigalrm = true;
-}
-
-static RETSIGTYPE sigusr1_handler(int a) {
- dump_connections();
-}
-
-static RETSIGTYPE sigusr2_handler(int a) {
- dump_device_stats();
- dump_nodes();
- dump_edges();
- dump_subnets();
-}
-
-static RETSIGTYPE sigwinch_handler(int a) {
- do_purge = true;
-}
-
-static RETSIGTYPE unexpected_signal_handler(int a) {
- logger(LOG_WARNING, "Got unexpected signal %d (%s)", a, strsignal(a));
-}
-
-static RETSIGTYPE ignore_signal_handler(int a) {
- ifdebug(SCARY_THINGS) logger(LOG_DEBUG, "Ignored signal %d (%s)", a, strsignal(a));
-}
-
-static struct {
- int signal;
- void (*handler)(int);
-} sighandlers[] = {
- {SIGHUP, sighup_handler},
- {SIGTERM, sigterm_handler},
- {SIGQUIT, sigquit_handler},
- {SIGSEGV, fatal_signal_handler},
- {SIGBUS, fatal_signal_handler},
- {SIGILL, fatal_signal_handler},
- {SIGPIPE, ignore_signal_handler},
- {SIGINT, sigint_handler},
- {SIGUSR1, sigusr1_handler},
- {SIGUSR2, sigusr2_handler},
- {SIGCHLD, ignore_signal_handler},
- {SIGALRM, sigalrm_handler},
- {SIGWINCH, sigwinch_handler},
- {SIGABRT, SIG_DFL},
- {0, NULL}
-};
-#endif
-
-void setup_signals(void) {
-#ifndef HAVE_MINGW
- int i;
- struct sigaction act;
-
- sigemptyset(&emptysigset);
- act.sa_handler = NULL;
- act.sa_mask = emptysigset;
- act.sa_flags = 0;
-
- /* Set a default signal handler for every signal, errors will be
- ignored. */
- for(i = 1; i < NSIG; i++) {
- if(!do_detach)
- act.sa_handler = SIG_DFL;
- else
- act.sa_handler = unexpected_signal_handler;
- sigaction(i, &act, NULL);
- }
-
- /* If we didn't detach, allow coredumps */
- if(!do_detach)
- sighandlers[3].handler = SIG_DFL;
-
- /* Then, for each known signal that we want to catch, assign a
- handler to the signal, with error checking this time. */
- for(i = 0; sighandlers[i].signal; i++) {
- act.sa_handler = sighandlers[i].handler;
- if(sigaction(sighandlers[i].signal, &act, NULL) < 0)
- fprintf(stderr, "Installing signal handler for signal %d (%s) failed: %s\n",
- sighandlers[i].signal, strsignal(sighandlers[i].signal),
- strerror(errno));
- }
-#endif
-}