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1 /*
2 * PBR - main code
3 * Copyright (C) 2018 Cumulus Networks, Inc.
4 * Donald Sharp
5 *
6 * FRR is free software; you can redistribute it and/or modify it
7 * under the terms of the GNU General Public License as published by the
8 * Free Software Foundation; either version 2, or (at your option) any
9 * later version.
10 *
11 * FRR is distributed in the hope that it will be useful, but
12 * WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14 * General Public License for more details.
15 *
16 * You should have received a copy of the GNU General Public License along
17 * with this program; see the file COPYING; if not, write to the Free Software
18 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
19 */
20 #include <zebra.h>
21
22 #include <lib/version.h>
23 #include "getopt.h"
24 #include "thread.h"
25 #include "prefix.h"
26 #include "linklist.h"
27 #include "if.h"
28 #include "vector.h"
29 #include "vty.h"
30 #include "command.h"
31 #include "filter.h"
32 #include "plist.h"
33 #include "stream.h"
34 #include "log.h"
35 #include "memory.h"
36 #include "privs.h"
37 #include "sigevent.h"
38 #include "zclient.h"
39 #include "keychain.h"
40 #include "distribute.h"
41 #include "libfrr.h"
42 #include "routemap.h"
43 #include "nexthop.h"
44 #include "nexthop_group.h"
45
46 #include "pbr_nht.h"
47 #include "pbr_map.h"
48 #include "pbr_zebra.h"
49 #include "pbr_vty.h"
50 #include "pbr_debug.h"
51
52 zebra_capabilities_t _caps_p[] = {
53 ZCAP_NET_RAW, ZCAP_BIND, ZCAP_NET_ADMIN,
54 };
55
56 struct zebra_privs_t pbr_privs = {
57 #if defined(FRR_USER) && defined(FRR_GROUP)
58 .user = FRR_USER,
59 .group = FRR_GROUP,
60 #endif
61 #if defined(VTY_GROUP)
62 .vty_group = VTY_GROUP,
63 #endif
64 .caps_p = _caps_p,
65 .cap_num_p = array_size(_caps_p),
66 .cap_num_i = 0};
67
68 struct option longopts[] = { { 0 } };
69
70 /* Master of threads. */
71 struct thread_master *master;
72
73 /* SIGHUP handler. */
74 static void sighup(void)
75 {
76 zlog_info("SIGHUP received");
77 }
78
79 /* SIGINT / SIGTERM handler. */
80 static void sigint(void)
81 {
82 zlog_notice("Terminating on signal");
83
84 exit(0);
85 }
86
87 /* SIGUSR1 handler. */
88 static void sigusr1(void)
89 {
90 zlog_rotate();
91 }
92
93 struct quagga_signal_t pbr_signals[] = {
94 {
95 .signal = SIGHUP,
96 .handler = &sighup,
97 },
98 {
99 .signal = SIGUSR1,
100 .handler = &sigusr1,
101 },
102 {
103 .signal = SIGINT,
104 .handler = &sigint,
105 },
106 {
107 .signal = SIGTERM,
108 .handler = &sigint,
109 },
110 };
111
112 #define PBR_VTY_PORT 2615
113
114 FRR_DAEMON_INFO(pbrd, PBR, .vty_port = PBR_VTY_PORT,
115
116 .proghelp = "Implementation of PBR.",
117
118 .signals = pbr_signals,
119 .n_signals = array_size(pbr_signals),
120
121 .privs = &pbr_privs,)
122
123 int main(int argc, char **argv, char **envp)
124 {
125 frr_preinit(&pbrd_di, argc, argv);
126 frr_opt_add("", longopts, "");
127
128 while (1) {
129 int opt;
130
131 opt = frr_getopt(argc, argv, NULL);
132
133 if (opt == EOF)
134 break;
135
136 switch (opt) {
137 case 0:
138 break;
139 default:
140 frr_help_exit(1);
141 break;
142 }
143 }
144
145 master = frr_init();
146
147 pbr_debug_init();
148
149 vrf_init(NULL, NULL, NULL, NULL, NULL);
150 nexthop_group_init(pbr_nhgroup_add_cb,
151 pbr_nhgroup_add_nexthop_cb,
152 pbr_nhgroup_del_nexthop_cb,
153 pbr_nhgroup_delete_cb);
154
155 /*
156 * So we safely ignore these commands since
157 * we are getting them at this point in time
158 */
159 access_list_init();
160 pbr_nht_init();
161 pbr_map_init();
162 pbr_zebra_init();
163 pbr_vty_init();
164
165 frr_config_fork();
166 frr_run(master);
167
168 /* Not reached. */
169 return 0;
170 }