1 /*
2 * OSPFd main routine.
3 * Copyright (C) 1998, 99 Kunihiro Ishiguro, Toshiaki Takada
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 along
18 * with this program; see the file COPYING; if not, write to the Free Software
19 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
20 */
21
22 #include <zebra.h>
23
24 #include <lib/version.h>
25 #include "getopt.h"
26 #include "thread.h"
27 #include "prefix.h"
28 #include "linklist.h"
29 #include "if.h"
30 #include "vector.h"
31 #include "vty.h"
32 #include "command.h"
33 #include "filter.h"
34 #include "plist.h"
35 #include "stream.h"
36 #include "log.h"
37 #include "memory.h"
38 #include "privs.h"
39 #include "sigevent.h"
40 #include "zclient.h"
41 #include "vrf.h"
42 #include "libfrr.h"
43 #include "routemap.h"
44
45 #include "ospfd/ospfd.h"
46 #include "ospfd/ospf_interface.h"
47 #include "ospfd/ospf_asbr.h"
48 #include "ospfd/ospf_lsa.h"
49 #include "ospfd/ospf_lsdb.h"
50 #include "ospfd/ospf_neighbor.h"
51 #include "ospfd/ospf_dump.h"
52 #include "ospfd/ospf_route.h"
53 #include "ospfd/ospf_zebra.h"
54 #include "ospfd/ospf_vty.h"
55 #include "ospfd/ospf_bfd.h"
56 #include "ospfd/ospf_errors.h"
57
58 /* ospfd privileges */
59 zebra_capabilities_t _caps_p[] = {ZCAP_NET_RAW, ZCAP_BIND, ZCAP_NET_ADMIN,
60 ZCAP_SYS_ADMIN};
61
62 struct zebra_privs_t ospfd_privs = {
63 #if defined(FRR_USER) && defined(FRR_GROUP)
64 .user = FRR_USER,
65 .group = FRR_GROUP,
66 #endif
67 #if defined(VTY_GROUP)
68 .vty_group = VTY_GROUP,
69 #endif
70 .caps_p = _caps_p,
71 .cap_num_p = array_size(_caps_p),
72 .cap_num_i = 0};
73
74 /* OSPFd options. */
75 const struct option longopts[] = {
76 {"instance", required_argument, NULL, 'n'},
77 {"apiserver", no_argument, NULL, 'a'},
78 {0}
79 };
80
81 /* OSPFd program name */
82
83 /* Master of threads. */
84 struct thread_master *master;
85
86 #ifdef SUPPORT_OSPF_API
87 extern int ospf_apiserver_enable;
88 #endif /* SUPPORT_OSPF_API */
89
90 /* SIGHUP handler. */
sighup(void)91 static void sighup(void)
92 {
93 zlog_info("SIGHUP received");
94 }
95
96 /* SIGINT / SIGTERM handler. */
sigint(void)97 static void sigint(void)
98 {
99 zlog_notice("Terminating on signal");
100 ospf_terminate();
101 exit(0);
102 }
103
104 /* SIGUSR1 handler. */
sigusr1(void)105 static void sigusr1(void)
106 {
107 zlog_rotate();
108 }
109
110 struct quagga_signal_t ospf_signals[] = {
111 {
112 .signal = SIGHUP,
113 .handler = &sighup,
114 },
115 {
116 .signal = SIGUSR1,
117 .handler = &sigusr1,
118 },
119 {
120 .signal = SIGINT,
121 .handler = &sigint,
122 },
123 {
124 .signal = SIGTERM,
125 .handler = &sigint,
126 },
127 };
128
129 static const struct frr_yang_module_info *const ospfd_yang_modules[] = {
130 &frr_filter_info,
131 &frr_interface_info,
132 &frr_route_map_info,
133 &frr_vrf_info,
134 };
135
136 FRR_DAEMON_INFO(ospfd, OSPF, .vty_port = OSPF_VTY_PORT,
137
138 .proghelp = "Implementation of the OSPFv2 routing protocol.",
139
140 .signals = ospf_signals, .n_signals = array_size(ospf_signals),
141
142 .privs = &ospfd_privs, .yang_modules = ospfd_yang_modules,
143 .n_yang_modules = array_size(ospfd_yang_modules), )
144
145 /* OSPFd main routine. */
main(int argc,char ** argv)146 int main(int argc, char **argv)
147 {
148 unsigned short instance = 0;
149 bool created = false;
150
151 #ifdef SUPPORT_OSPF_API
152 /* OSPF apiserver is disabled by default. */
153 ospf_apiserver_enable = 0;
154 #endif /* SUPPORT_OSPF_API */
155
156 frr_preinit(&ospfd_di, argc, argv);
157 frr_opt_add("n:a", longopts,
158 " -n, --instance Set the instance id\n"
159 " -a, --apiserver Enable OSPF apiserver\n");
160
161 while (1) {
162 int opt;
163
164 opt = frr_getopt(argc, argv, NULL);
165
166 if (opt == EOF)
167 break;
168
169 switch (opt) {
170 case 'n':
171 ospfd_di.instance = instance = atoi(optarg);
172 if (instance < 1)
173 exit(0);
174 break;
175 case 0:
176 break;
177 #ifdef SUPPORT_OSPF_API
178 case 'a':
179 ospf_apiserver_enable = 1;
180 break;
181 #endif /* SUPPORT_OSPF_API */
182 default:
183 frr_help_exit(1);
184 break;
185 }
186 }
187
188 /* Invoked by a priviledged user? -- endo. */
189 if (geteuid() != 0) {
190 errno = EPERM;
191 perror(ospfd_di.progname);
192 exit(1);
193 }
194
195 /* OSPF master init. */
196 ospf_master_init(frr_init());
197
198 /* Initializations. */
199 master = om->master;
200
201 /* Library inits. */
202 ospf_debug_init();
203 ospf_vrf_init();
204
205 access_list_init();
206 prefix_list_init();
207
208 /* OSPFd inits. */
209 ospf_if_init();
210 ospf_zebra_init(master, instance);
211
212 /* OSPF vty inits. */
213 ospf_vty_init();
214 ospf_vty_show_init();
215 ospf_vty_clear_init();
216
217 /* OSPF BFD init */
218 ospf_bfd_init();
219
220 ospf_route_map_init();
221 ospf_opaque_init();
222
223 /* OSPF errors init */
224 ospf_error_init();
225
226 /*
227 * Need to initialize the default ospf structure, so the interface mode
228 * commands can be duly processed if they are received before 'router
229 * ospf', when ospfd is restarted
230 */
231 if (instance && !ospf_get_instance(instance, &created)) {
232 flog_err(EC_OSPF_INIT_FAIL, "OSPF instance init failed: %s",
233 strerror(errno));
234 exit(1);
235 }
236
237 frr_config_fork();
238 frr_run(master);
239
240 /* Not reached. */
241 return 0;
242 }
243