ripd/rip_main.c

   1 // SPDX-License-Identifier: GPL-2.0-or-later
   2 /* RIPd main routine.
   3  * Copyright (C) 1997, 98 Kunihiro Ishiguro <kunihiro@zebra.org>
   4  */
   5
   6 #include <zebra.h>
   7
   8 #include <lib/version.h>
   9 #include "getopt.h"
  10 #include "event.h"
  11 #include "command.h"
  12 #include "memory.h"
  13 #include "prefix.h"
  14 #include "filter.h"
  15 #include "keychain.h"
  16 #include "log.h"
  17 #include "privs.h"
  18 #include "sigevent.h"
  19 #include "zclient.h"
  20 #include "vrf.h"
  21 #include "if_rmap.h"
  22 #include "libfrr.h"
  23 #include "routemap.h"
  24
  25 #include "ripd/ripd.h"
  26 #include "ripd/rip_nb.h"
  27 #include "ripd/rip_errors.h"
  28
  29 /* ripd options. */
  30 static struct option longopts[] = {{0}};
  31
  32 /* ripd privileges */
  33 zebra_capabilities_t _caps_p[] = {ZCAP_NET_RAW, ZCAP_BIND, ZCAP_SYS_ADMIN};
  34
  35 struct zebra_privs_t ripd_privs = {
  36 #if defined(FRR_USER)
  37         .user = FRR_USER,
  38 #endif
  39 #if defined FRR_GROUP
  40         .group = FRR_GROUP,
  41 #endif
  42 #ifdef VTY_GROUP
  43         .vty_group = VTY_GROUP,
  44 #endif
  45         .caps_p = _caps_p,
  46         .cap_num_p = array_size(_caps_p),
  47         .cap_num_i = 0};
  48
  49 /* Master of threads. */
  50 struct thread_master *master;
  51
  52 static struct frr_daemon_info ripd_di;
  53
  54 /* SIGHUP handler. */
  55 static void sighup(void)
  56 {
  57         zlog_info("SIGHUP received");
  58
  59         /* Reload config file. */
  60         vty_read_config(NULL, ripd_di.config_file, config_default);
  61 }
  62
  63 /* SIGINT handler. */
  64 static void sigint(void)
  65 {
  66         zlog_notice("Terminating on signal");
  67
  68         rip_vrf_terminate();
  69         if_rmap_terminate();
  70         rip_zclient_stop();
  71         frr_fini();
  72
  73         exit(0);
  74 }
  75
  76 /* SIGUSR1 handler. */
  77 static void sigusr1(void)
  78 {
  79         zlog_rotate();
  80 }
  81
  82 static struct frr_signal_t ripd_signals[] = {
  83         {
  84                 .signal = SIGHUP,
  85                 .handler = &sighup,
  86         },
  87         {
  88                 .signal = SIGUSR1,
  89                 .handler = &sigusr1,
  90         },
  91         {
  92                 .signal = SIGINT,
  93                 .handler = &sigint,
  94         },
  95         {
  96                 .signal = SIGTERM,
  97                 .handler = &sigint,
  98         },
  99 };
 100
 101 static const struct frr_yang_module_info *const ripd_yang_modules[] = {
 102         &frr_filter_info,
 103         &frr_interface_info,
 104         &frr_ripd_info,
 105         &frr_route_map_info,
 106         &frr_vrf_info,
 107 };
 108
 109 FRR_DAEMON_INFO(ripd, RIP, .vty_port = RIP_VTY_PORT,
 110
 111                 .proghelp = "Implementation of the RIP routing protocol.",
 112
 113                 .signals = ripd_signals, .n_signals = array_size(ripd_signals),
 114
 115                 .privs = &ripd_privs, .yang_modules = ripd_yang_modules,
 116                 .n_yang_modules = array_size(ripd_yang_modules),
 117 );
 118
 119 #define DEPRECATED_OPTIONS ""
 120
 121 /* Main routine of ripd. */
 122 int main(int argc, char **argv)
 123 {
 124         frr_preinit(&ripd_di, argc, argv);
 125
 126         frr_opt_add("" DEPRECATED_OPTIONS, longopts, "");
 127
 128         /* Command line option parse. */
 129         while (1) {
 130                 int opt;
 131
 132                 opt = frr_getopt(argc, argv, NULL);
 133
 134                 if (opt && opt < 128 && strchr(DEPRECATED_OPTIONS, opt)) {
 135                         fprintf(stderr,
 136                                 "The -%c option no longer exists.\nPlease refer to the manual.\n",
 137                                 opt);
 138                         continue;
 139                 }
 140
 141                 if (opt == EOF)
 142                         break;
 143
 144                 switch (opt) {
 145                 case 0:
 146                         break;
 147                 default:
 148                         frr_help_exit(1);
 149                 }
 150         }
 151
 152         /* Prepare master thread. */
 153         master = frr_init();
 154
 155         /* Library initialization. */
 156         rip_error_init();
 157         keychain_init();
 158         rip_vrf_init();
 159
 160         /* RIP related initialization. */
 161         rip_init();
 162         rip_if_init();
 163         rip_cli_init();
 164         rip_zclient_init(master);
 165
 166         frr_config_fork();
 167         frr_run(master);
 168
 169         /* Not reached. */
 170         return 0;
 171 }