sharpd/sharp_main.c

   1 // SPDX-License-Identifier: GPL-2.0-or-later
   2 /*
   3  * SHARP - main code
   4  * Copyright (C) Cumulus Networks, Inc.
   5  *               Donald Sharp
   6  */
   7 #include <zebra.h>
   8
   9 #include <lib/version.h>
  10 #include "getopt.h"
  11 #include "frrevent.h"
  12 #include "prefix.h"
  13 #include "linklist.h"
  14 #include "if.h"
  15 #include "vector.h"
  16 #include "vty.h"
  17 #include "command.h"
  18 #include "filter.h"
  19 #include "plist.h"
  20 #include "stream.h"
  21 #include "log.h"
  22 #include "memory.h"
  23 #include "privs.h"
  24 #include "sigevent.h"
  25 #include "zclient.h"
  26 #include "keychain.h"
  27 #include "distribute.h"
  28 #include "libfrr.h"
  29 #include "routemap.h"
  30 #include "nexthop_group.h"
  31 #include "link_state.h"
  32
  33 #include "sharp_zebra.h"
  34 #include "sharp_vty.h"
  35 #include "sharp_globals.h"
  36 #include "sharp_nht.h"
  37
  38 DEFINE_MGROUP(SHARPD, "sharpd");
  39
  40 zebra_capabilities_t _caps_p[] = {
  41 };
  42
  43 struct zebra_privs_t sharp_privs = {
  44 #if defined(FRR_USER) && defined(FRR_GROUP)
  45         .user = FRR_USER,
  46         .group = FRR_GROUP,
  47 #endif
  48 #if defined(VTY_GROUP)
  49         .vty_group = VTY_GROUP,
  50 #endif
  51         .caps_p = _caps_p,
  52         .cap_num_p = array_size(_caps_p),
  53         .cap_num_i = 0};
  54
  55 struct option longopts[] = {{0}};
  56
  57 /* Master of threads. */
  58 struct event_loop *master;
  59
  60 /* SIGHUP handler. */
  61 static void sighup(void)
  62 {
  63         zlog_info("SIGHUP received");
  64 }
  65
  66 /* SIGINT / SIGTERM handler. */
  67 static void sigint(void)
  68 {
  69         zlog_notice("Terminating on signal");
  70
  71         frr_fini();
  72
  73         exit(0);
  74 }
  75
  76 /* SIGUSR1 handler. */
  77 static void sigusr1(void)
  78 {
  79         zlog_rotate();
  80 }
  81
  82 struct frr_signal_t sharp_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 #define SHARP_VTY_PORT 2614
 102
 103 static const struct frr_yang_module_info *const sharpd_yang_modules[] = {
 104         &frr_filter_info,
 105         &frr_interface_info,
 106         &frr_route_map_info,
 107         &frr_vrf_info,
 108 };
 109
 110 FRR_DAEMON_INFO(sharpd, SHARP, .vty_port = SHARP_VTY_PORT,
 111
 112                 .proghelp = "Implementation of a Sharp of routes daemon.",
 113
 114                 .signals = sharp_signals,
 115                 .n_signals = array_size(sharp_signals),
 116
 117                 .privs = &sharp_privs, .yang_modules = sharpd_yang_modules,
 118                 .n_yang_modules = array_size(sharpd_yang_modules),
 119 );
 120
 121 struct sharp_global sg;
 122
 123 static void sharp_global_init(void)
 124 {
 125         memset(&sg, 0, sizeof(sg));
 126         sg.nhs = list_new();
 127         sg.ted = NULL;
 128         sg.srv6_locators = list_new();
 129 }
 130
 131 static void sharp_start_configuration(void)
 132 {
 133         zlog_debug("Configuration has started to be read");
 134 }
 135
 136 static void sharp_end_configuration(void)
 137 {
 138         zlog_debug("Configuration has finished being read");
 139 }
 140
 141 int main(int argc, char **argv, char **envp)
 142 {
 143         frr_preinit(&sharpd_di, argc, argv);
 144         frr_opt_add("", longopts, "");
 145
 146         while (1) {
 147                 int opt;
 148
 149                 opt = frr_getopt(argc, argv, NULL);
 150
 151                 if (opt == EOF)
 152                         break;
 153
 154                 switch (opt) {
 155                 case 0:
 156                         break;
 157                 default:
 158                         frr_help_exit(1);
 159                 }
 160         }
 161
 162         master = frr_init();
 163
 164         cmd_init_config_callbacks(sharp_start_configuration,
 165                                   sharp_end_configuration);
 166         sharp_global_init();
 167
 168         sharp_nhgroup_init();
 169         vrf_init(NULL, NULL, NULL, NULL);
 170
 171         sharp_zebra_init();
 172
 173         /* Get configuration file. */
 174         sharp_vty_init();
 175
 176         frr_config_fork();
 177         frr_run(master);
 178
 179         /* Not reached. */
 180         return 0;
 181 }