--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/bmsd/bms.c Sat Aug 04 21:19:15 2018 +0200
@@ -0,0 +1,237 @@
+/*****************************************************************************
+ * Copyright (C) 2017-2018
+ *
+ * Michiel Broek <mbroek at mbse dot eu>
+ *
+ * This file is part of the bms (Brewery Management System)
+ *
+ * This 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, or (at your option) any
+ * later version.
+ *
+ * bms 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 ThermFerm; see the file COPYING. If not, write to the Free
+ * Software Foundation, 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA.
+ *****************************************************************************/
+
+#include "bms.h"
+#include "xutil.h"
+#include "rdconfig.h"
+#include "lock.h"
+#include "mqtt.h"
+#include "mysql.h"
+
+
+int my_shutdown = FALSE;
+int debug = FALSE;
+static pid_t pgrp, mypid;
+char *Private_Path = NULL; /* Users data path */
+//char *resource_path = NULL; /* Webserver root */
+
+//extern struct lws_context *context;
+
+
+void help(void)
+{
+ fprintf(stdout, "bmsd v%s starting\n\n", VERSION);
+ fprintf(stdout, "Usage: bmsd [-d] [-h]\n");
+ fprintf(stdout, " -d --debug Debug and run in foreground\n");
+ fprintf(stdout, " -h --help Display this help\n");
+}
+
+
+
+void die(int onsig)
+{
+ switch (onsig) {
+ case SIGHUP: syslog(LOG_NOTICE, "Got SIGHUP, shutting down");
+ break;
+ case SIGINT: syslog(LOG_NOTICE, "Keyboard interrupt, shutting down");
+ break;
+ case SIGTERM: syslog(LOG_NOTICE, "Got SIGTERM, shutting down");
+ break;
+ case SIGSEGV: syslog(LOG_NOTICE, "Got SIGSEGV, shutting down");
+ my_shutdown = TRUE;
+ exit(SIGSEGV);
+ break;
+ default: syslog(LOG_NOTICE, "die() on signal %d", onsig);
+ }
+ my_shutdown = TRUE;
+}
+
+
+
+int server(void) {
+ uid_t myuid;
+ struct passwd *mypwd;
+ int rc = 0;
+
+ myuid = getuid();
+ mypwd = getpwuid(myuid);
+ if (mypwd == NULL) {
+ fprintf(stderr, "[main] Could not find passwd entry\n");
+ return 1;
+ }
+
+ Private_Path = xstrcpy(mypwd->pw_dir);
+ Private_Path = xstrcat(Private_Path, (char *)"/.bms");
+
+ if (lockprog((char *)"bmsd")) {
+ syslog(LOG_NOTICE, "Can't lock");
+ return 1;
+ }
+
+ if (rdconfig()) {
+ rc = 2;
+ goto endit1;
+ }
+
+ if (bms_mysql_init()) {
+ rc = 3;
+ goto endit1;
+ }
+ if (mqtt_connect()) {
+ rc = 4;
+ goto endit2;
+ }
+
+ if (debug)
+ fprintf(stdout, "[main] Entering main loop\n");
+
+ while (my_shutdown == FALSE) {
+
+ usleep(100000);
+ }
+ if (debug)
+ fprintf(stdout, "[main] Exit from main loop\n");
+
+ /*
+ * Remove our topics and close MQTT connection.
+ */
+ mqtt_disconnect();
+
+endit2:
+ bms_mysql_end();
+
+endit1:
+
+ killconfig();
+
+ ulockprog((char *)"bmsd");
+
+ free(Private_Path);
+ Private_Path = NULL;
+
+ if (debug)
+ fprintf(stdout, "[main] Server shutdown complete\n");
+ return rc;
+}
+
+
+
+int main(int argc, char *argv[]) {
+ int rc, c, i;
+ pid_t frk;
+
+ while (1) {
+ int option_index = 0;
+ static struct option long_options[] = {
+ {"debug", 0, 0, 'c'},
+ {"help", 0, 0, 'h'},
+ {0, 0, 0, 0}
+ };
+
+ c = getopt_long(argc, argv, "dh", long_options, &option_index);
+ if (c == -1)
+ break;
+ switch (c) {
+ case 'd': debug = TRUE;
+ break;
+ case 'h': help();
+ return 1;
+ }
+ }
+
+ openlog("bmsd", LOG_PID|LOG_CONS|LOG_NOWAIT, LOG_USER);
+ syslog(LOG_NOTICE, "bmsd v%s starting", VERSION);
+ if (debug)
+ fprintf(stdout, "bmsd v%s starting\n", VERSION);
+
+
+ /*
+ * Catch all the signals we can, and ignore the rest. Note that SIGKILL can't be ignored
+ * but that's live. This daemon should only be stopped by SIGTERM.
+ * Don't catch SIGCHLD.
+ */
+ for (i = 0; i < NSIG; i++) {
+ if ((i != SIGCHLD) && (i != SIGKILL) && (i != SIGSTOP))
+ signal(i, (void (*))die);
+ }
+
+ if (debug) {
+ /*
+ * For debugging run in foreground.
+ */
+ rc = server();
+ } else {
+ /*
+ * Server initialization is complete. Now we can fork the
+ * daemon and return to the user. We need to do a setpgrp
+ * so that the daemon will no longer be assosiated with the
+ * users control terminal. This is done before the fork, so
+ * that the child will not be a process group leader. Otherwise,
+ * if the child were to open a terminal, it would become
+ * associated with that terminal as its control terminal.
+ */
+ if ((pgrp = setpgid(0, 0)) == -1) {
+ syslog(LOG_NOTICE, "setpgpid failed");
+ }
+
+ frk = fork();
+ switch (frk) {
+ case -1:
+ syslog(LOG_NOTICE, "Daemon fork failed: %s", strerror(errno));
+ exit(1);
+ case 0: /*
+ * Run the daemon
+ */
+ fclose(stdin);
+ if (open("/dev/null", O_RDONLY) != 0) {
+ syslog(LOG_NOTICE, "Reopen of stdin to /dev/null failed");
+ _exit(2);
+ }
+ fclose(stdout);
+ if (open("/dev/null", O_WRONLY | O_APPEND | O_CREAT,0600) != 1) {
+ syslog(LOG_NOTICE, "Reopen of stdout to /dev/null failed");
+ _exit(2);
+ }
+ fclose(stderr);
+ if (open("/dev/null", O_WRONLY | O_APPEND | O_CREAT,0600) != 2) {
+ syslog(LOG_NOTICE, "Reopen of stderr to /dev/null failed");
+ _exit(2);
+ }
+ mypid = getpid();
+ rc = server();
+ break;
+ /* Not reached */
+ default:
+ /*
+ * Here we detach this process and let the child
+ * run the deamon process.
+ */
+ syslog(LOG_NOTICE, "Starting daemon with pid %d", frk);
+ exit(0);
+ }
+ }
+
+ syslog(LOG_NOTICE, "Finished, rc=%d", rc);
+ return rc;
+}
+
+