Annotation of embedaddon/quagga/ripngd/ripng_main.c, revision 1.1
1.1 ! misho 1: /*
! 2: * RIPngd main routine.
! 3: * Copyright (C) 1998, 1999 Kunihiro Ishiguro
! 4: *
! 5: * This file is part of GNU Zebra.
! 6: *
! 7: * GNU Zebra is free software; you can redistribute it and/or modify it
! 8: * under the terms of the GNU General Public License as published by the
! 9: * Free Software Foundation; either version 2, or (at your option) any
! 10: * later version.
! 11: *
! 12: * GNU Zebra is distributed in the hope that it will be useful, but
! 13: * WITHOUT ANY WARRANTY; without even the implied warranty of
! 14: * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
! 15: * General Public License for more details.
! 16: *
! 17: * You should have received a copy of the GNU General Public License
! 18: * along with GNU Zebra; see the file COPYING. If not, write to the Free
! 19: * Software Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
! 20: * 02111-1307, USA.
! 21: */
! 22:
! 23: #include <zebra.h>
! 24:
! 25: #include <lib/version.h>
! 26: #include "getopt.h"
! 27: #include "vector.h"
! 28: #include "vty.h"
! 29: #include "command.h"
! 30: #include "memory.h"
! 31: #include "thread.h"
! 32: #include "log.h"
! 33: #include "prefix.h"
! 34: #include "if.h"
! 35: #include "privs.h"
! 36: #include "sigevent.h"
! 37:
! 38: #include "ripngd/ripngd.h"
! 39:
! 40: /* Configuration filename and directory. */
! 41: char config_default[] = SYSCONFDIR RIPNG_DEFAULT_CONFIG;
! 42: char *config_file = NULL;
! 43:
! 44: /* RIPngd options. */
! 45: struct option longopts[] =
! 46: {
! 47: { "daemon", no_argument, NULL, 'd'},
! 48: { "config_file", required_argument, NULL, 'f'},
! 49: { "pid_file", required_argument, NULL, 'i'},
! 50: { "dryrun", no_argument, NULL, 'C'},
! 51: { "help", no_argument, NULL, 'h'},
! 52: { "vty_addr", required_argument, NULL, 'A'},
! 53: { "vty_port", required_argument, NULL, 'P'},
! 54: { "retain", no_argument, NULL, 'r'},
! 55: { "user", required_argument, NULL, 'u'},
! 56: { "group", required_argument, NULL, 'g'},
! 57: { "version", no_argument, NULL, 'v'},
! 58: { 0 }
! 59: };
! 60:
! 61: /* ripngd privileges */
! 62: zebra_capabilities_t _caps_p [] =
! 63: {
! 64: ZCAP_NET_RAW,
! 65: ZCAP_BIND
! 66: };
! 67:
! 68: struct zebra_privs_t ripngd_privs =
! 69: {
! 70: #if defined(QUAGGA_USER)
! 71: .user = QUAGGA_USER,
! 72: #endif
! 73: #if defined QUAGGA_GROUP
! 74: .group = QUAGGA_GROUP,
! 75: #endif
! 76: #ifdef VTY_GROUP
! 77: .vty_group = VTY_GROUP,
! 78: #endif
! 79: .caps_p = _caps_p,
! 80: .cap_num_p = 2,
! 81: .cap_num_i = 0
! 82: };
! 83:
! 84:
! 85: /* RIPngd program name */
! 86:
! 87: /* Route retain mode flag. */
! 88: int retain_mode = 0;
! 89:
! 90: /* RIPng VTY bind address. */
! 91: char *vty_addr = NULL;
! 92:
! 93: /* RIPng VTY connection port. */
! 94: int vty_port = RIPNG_VTY_PORT;
! 95:
! 96: /* Master of threads. */
! 97: struct thread_master *master;
! 98:
! 99: /* Process ID saved for use by init system */
! 100: const char *pid_file = PATH_RIPNGD_PID;
! 101:
! 102: /* Help information display. */
! 103: static void
! 104: usage (char *progname, int status)
! 105: {
! 106: if (status != 0)
! 107: fprintf (stderr, "Try `%s --help' for more information.\n", progname);
! 108: else
! 109: {
! 110: printf ("Usage : %s [OPTION...]\n\
! 111: Daemon which manages RIPng.\n\n\
! 112: -d, --daemon Runs in daemon mode\n\
! 113: -f, --config_file Set configuration file name\n\
! 114: -i, --pid_file Set process identifier file name\n\
! 115: -A, --vty_addr Set vty's bind address\n\
! 116: -P, --vty_port Set vty's port number\n\
! 117: -r, --retain When program terminates, retain added route by ripngd.\n\
! 118: -u, --user User to run as\n\
! 119: -g, --group Group to run as\n\
! 120: -v, --version Print program version\n\
! 121: -C, --dryrun Check configuration for validity and exit\n\
! 122: -h, --help Display this help and exit\n\
! 123: \n\
! 124: Report bugs to %s\n", progname, ZEBRA_BUG_ADDRESS);
! 125: }
! 126: exit (status);
! 127: }
! 128:
! 129: /* SIGHUP handler. */
! 130: static void
! 131: sighup (void)
! 132: {
! 133: zlog_info ("SIGHUP received");
! 134: ripng_clean ();
! 135: ripng_reset ();
! 136:
! 137: /* Reload config file. */
! 138: vty_read_config (config_file, config_default);
! 139: /* Create VTY's socket */
! 140: vty_serv_sock (vty_addr, vty_port, RIPNG_VTYSH_PATH);
! 141:
! 142: /* Try to return to normal operation. */
! 143: }
! 144:
! 145: /* SIGINT handler. */
! 146: static void
! 147: sigint (void)
! 148: {
! 149: zlog_notice ("Terminating on signal");
! 150:
! 151: if (! retain_mode)
! 152: ripng_clean ();
! 153:
! 154: exit (0);
! 155: }
! 156:
! 157: /* SIGUSR1 handler. */
! 158: static void
! 159: sigusr1 (void)
! 160: {
! 161: zlog_rotate (NULL);
! 162: }
! 163:
! 164: struct quagga_signal_t ripng_signals[] =
! 165: {
! 166: {
! 167: .signal = SIGHUP,
! 168: .handler = &sighup,
! 169: },
! 170: {
! 171: .signal = SIGUSR1,
! 172: .handler = &sigusr1,
! 173: },
! 174: {
! 175: .signal = SIGINT,
! 176: .handler = &sigint,
! 177: },
! 178: {
! 179: .signal = SIGTERM,
! 180: .handler = &sigint,
! 181: },
! 182: };
! 183:
! 184: /* RIPngd main routine. */
! 185: int
! 186: main (int argc, char **argv)
! 187: {
! 188: char *p;
! 189: int vty_port = RIPNG_VTY_PORT;
! 190: int daemon_mode = 0;
! 191: char *progname;
! 192: struct thread thread;
! 193: int dryrun = 0;
! 194:
! 195: /* Set umask before anything for security */
! 196: umask (0027);
! 197:
! 198: /* get program name */
! 199: progname = ((p = strrchr (argv[0], '/')) ? ++p : argv[0]);
! 200:
! 201: zlog_default = openzlog(progname, ZLOG_RIPNG,
! 202: LOG_CONS|LOG_NDELAY|LOG_PID, LOG_DAEMON);
! 203:
! 204: while (1)
! 205: {
! 206: int opt;
! 207:
! 208: opt = getopt_long (argc, argv, "df:i:hA:P:u:g:vC", longopts, 0);
! 209:
! 210: if (opt == EOF)
! 211: break;
! 212:
! 213: switch (opt)
! 214: {
! 215: case 0:
! 216: break;
! 217: case 'd':
! 218: daemon_mode = 1;
! 219: break;
! 220: case 'f':
! 221: config_file = optarg;
! 222: break;
! 223: case 'A':
! 224: vty_addr = optarg;
! 225: break;
! 226: case 'i':
! 227: pid_file = optarg;
! 228: break;
! 229: case 'P':
! 230: /* Deal with atoi() returning 0 on failure, and ripngd not
! 231: listening on ripngd port... */
! 232: if (strcmp(optarg, "0") == 0)
! 233: {
! 234: vty_port = 0;
! 235: break;
! 236: }
! 237: vty_port = atoi (optarg);
! 238: if (vty_port <= 0 || vty_port > 0xffff)
! 239: vty_port = RIPNG_VTY_PORT;
! 240: break;
! 241: case 'r':
! 242: retain_mode = 1;
! 243: break;
! 244: case 'u':
! 245: ripngd_privs.user = optarg;
! 246: break;
! 247: case 'g':
! 248: ripngd_privs.group = optarg;
! 249: break;
! 250: case 'v':
! 251: print_version (progname);
! 252: exit (0);
! 253: break;
! 254: case 'C':
! 255: dryrun = 1;
! 256: break;
! 257: case 'h':
! 258: usage (progname, 0);
! 259: break;
! 260: default:
! 261: usage (progname, 1);
! 262: break;
! 263: }
! 264: }
! 265:
! 266: master = thread_master_create ();
! 267:
! 268: /* Library inits. */
! 269: zprivs_init (&ripngd_privs);
! 270: signal_init (master, Q_SIGC(ripng_signals), ripng_signals);
! 271: cmd_init (1);
! 272: vty_init (master);
! 273: memory_init ();
! 274:
! 275: /* RIPngd inits. */
! 276: ripng_init ();
! 277: zebra_init ();
! 278: ripng_peer_init ();
! 279:
! 280: /* Sort all installed commands. */
! 281: sort_node ();
! 282:
! 283: /* Get configuration file. */
! 284: vty_read_config (config_file, config_default);
! 285:
! 286: /* Start execution only if not in dry-run mode */
! 287: if(dryrun)
! 288: return(0);
! 289:
! 290: /* Change to the daemon program. */
! 291: if (daemon_mode && daemon (0, 0) < 0)
! 292: {
! 293: zlog_err("RIPNGd daemon failed: %s", strerror(errno));
! 294: exit (1);
! 295: }
! 296:
! 297: /* Create VTY socket */
! 298: vty_serv_sock (vty_addr, vty_port, RIPNG_VTYSH_PATH);
! 299:
! 300: /* Process id file create. */
! 301: pid_output (pid_file);
! 302:
! 303: /* Print banner. */
! 304: zlog_notice ("RIPNGd %s starting: vty@%d", QUAGGA_VERSION, vty_port);
! 305:
! 306: /* Fetch next active thread. */
! 307: while (thread_fetch (master, &thread))
! 308: thread_call (&thread);
! 309:
! 310: /* Not reached. */
! 311: return 0;
! 312: }
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