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acddc0ed | 1 | // SPDX-License-Identifier: GPL-2.0-or-later |
2fb975da TT |
2 | /* NHRP daemon main functions |
3 | * Copyright (c) 2014-2015 Timo Teräs | |
2fb975da TT |
4 | */ |
5 | ||
b45ac5f5 DL |
6 | #ifdef HAVE_CONFIG_H |
7 | #include "config.h" | |
8 | #endif | |
9 | ||
2fb975da TT |
10 | #include <unistd.h> |
11 | ||
12 | #include "zebra.h" | |
13 | #include "privs.h" | |
14 | #include "getopt.h" | |
15 | #include "thread.h" | |
16 | #include "sigevent.h" | |
09781197 | 17 | #include "lib/version.h" |
2fb975da TT |
18 | #include "log.h" |
19 | #include "memory.h" | |
20 | #include "command.h" | |
4f04a76b | 21 | #include "libfrr.h" |
fb7f5aa8 | 22 | #include "filter.h" |
2fb975da TT |
23 | |
24 | #include "nhrpd.h" | |
aed07011 | 25 | #include "nhrp_errors.h" |
2fb975da | 26 | |
bf8d3d6a | 27 | DEFINE_MGROUP(NHRPD, "NHRP"); |
819dc8bb | 28 | |
2fb975da TT |
29 | unsigned int debug_flags = 0; |
30 | ||
31 | struct thread_master *master; | |
32 | struct timeval current_time; | |
2fb975da TT |
33 | |
34 | /* nhrpd options. */ | |
996c9314 | 35 | struct option longopts[] = {{0}}; |
2fb975da TT |
36 | |
37 | /* nhrpd privileges */ | |
996c9314 LB |
38 | static zebra_capabilities_t _caps_p[] = { |
39 | ZCAP_NET_RAW, ZCAP_NET_ADMIN, | |
40 | ZCAP_DAC_OVERRIDE, /* for now needed to write to | |
41 | /proc/sys/net/ipv4/<if>/send_redirect */ | |
2fb975da TT |
42 | }; |
43 | ||
26efbc7b | 44 | struct zebra_privs_t nhrpd_privs = { |
54b7b88b HWC |
45 | #if defined(FRR_USER) && defined(FRR_GROUP) |
46 | .user = FRR_USER, | |
47 | .group = FRR_GROUP, | |
2fb975da TT |
48 | #endif |
49 | #ifdef VTY_GROUP | |
50 | .vty_group = VTY_GROUP, | |
51 | #endif | |
52 | .caps_p = _caps_p, | |
7e3a1ec7 | 53 | .cap_num_p = array_size(_caps_p), |
db52be55 | 54 | .cap_num_i = 0 |
2fb975da TT |
55 | }; |
56 | ||
db52be55 | 57 | |
4f04a76b | 58 | static void parse_arguments(int argc, char **argv) |
2fb975da TT |
59 | { |
60 | int opt; | |
61 | ||
62 | while (1) { | |
4f04a76b | 63 | opt = frr_getopt(argc, argv, 0); |
996c9314 LB |
64 | if (opt < 0) |
65 | break; | |
2fb975da TT |
66 | |
67 | switch (opt) { | |
68 | case 0: | |
69 | break; | |
2fb975da | 70 | default: |
4f04a76b | 71 | frr_help_exit(1); |
2fb975da TT |
72 | } |
73 | } | |
74 | } | |
75 | ||
76 | static void nhrp_sigusr1(void) | |
77 | { | |
dd8376fe | 78 | zlog_rotate(); |
2fb975da TT |
79 | } |
80 | ||
81 | static void nhrp_request_stop(void) | |
82 | { | |
83 | debugf(NHRP_DEBUG_COMMON, "Exiting..."); | |
03951374 | 84 | frr_early_fini(); |
2fb975da TT |
85 | |
86 | nhrp_shortcut_terminate(); | |
87 | nhrp_nhs_terminate(); | |
88 | nhrp_zebra_terminate(); | |
89 | vici_terminate(); | |
90 | evmgr_terminate(); | |
91 | nhrp_vc_terminate(); | |
92 | vrf_terminate(); | |
2fb975da | 93 | |
2fb975da | 94 | debugf(NHRP_DEBUG_COMMON, "Done."); |
03951374 | 95 | frr_fini(); |
2fb975da TT |
96 | |
97 | exit(0); | |
98 | } | |
99 | ||
7cc91e67 | 100 | static struct frr_signal_t sighandlers[] = { |
996c9314 LB |
101 | { |
102 | .signal = SIGUSR1, | |
103 | .handler = &nhrp_sigusr1, | |
104 | }, | |
105 | { | |
106 | .signal = SIGINT, | |
107 | .handler = &nhrp_request_stop, | |
108 | }, | |
109 | { | |
110 | .signal = SIGTERM, | |
111 | .handler = &nhrp_request_stop, | |
112 | }, | |
2fb975da TT |
113 | }; |
114 | ||
0d8c7a26 | 115 | static const struct frr_yang_module_info *const nhrpd_yang_modules[] = { |
fb7f5aa8 | 116 | &frr_filter_info, |
a4bed468 | 117 | &frr_interface_info, |
f5eef2d5 | 118 | &frr_vrf_info, |
8fcdd0d6 RW |
119 | }; |
120 | ||
996c9314 | 121 | FRR_DAEMON_INFO(nhrpd, NHRP, .vty_port = NHRP_VTY_PORT, |
4f04a76b | 122 | |
996c9314 | 123 | .proghelp = "Implementation of the NHRP routing protocol.", |
4f04a76b | 124 | |
996c9314 | 125 | .signals = sighandlers, .n_signals = array_size(sighandlers), |
4f04a76b | 126 | |
8fcdd0d6 | 127 | .privs = &nhrpd_privs, .yang_modules = nhrpd_yang_modules, |
80413c20 DL |
128 | .n_yang_modules = array_size(nhrpd_yang_modules), |
129 | ); | |
4f04a76b | 130 | |
2fb975da TT |
131 | int main(int argc, char **argv) |
132 | { | |
4f04a76b | 133 | frr_preinit(&nhrpd_di, argc, argv); |
eb05883f | 134 | frr_opt_add("", longopts, ""); |
2fb975da | 135 | |
4f04a76b | 136 | parse_arguments(argc, argv); |
2fb975da TT |
137 | |
138 | /* Library inits. */ | |
4f04a76b | 139 | master = frr_init(); |
aed07011 | 140 | nhrp_error_init(); |
ac2cb9bf | 141 | vrf_init(NULL, NULL, NULL, NULL); |
818c8515 | 142 | nhrp_interface_init(); |
fe9e7b71 | 143 | resolver_init(master); |
2fb975da | 144 | |
8ca7a3ed DS |
145 | /* |
146 | * Run with elevated capabilities, as for all netlink activity | |
147 | * we need privileges anyway. | |
148 | * The assert is for clang SA code where it does | |
149 | * not see the change function being set in lib | |
150 | */ | |
151 | assert(nhrpd_privs.change); | |
2fb975da TT |
152 | nhrpd_privs.change(ZPRIVS_RAISE); |
153 | ||
2fb975da TT |
154 | evmgr_init(); |
155 | nhrp_vc_init(); | |
156 | nhrp_packet_init(); | |
157 | vici_init(); | |
138c5a74 DS |
158 | if_zapi_callbacks(nhrp_ifp_create, nhrp_ifp_up, |
159 | nhrp_ifp_down, nhrp_ifp_destroy); | |
2fb975da TT |
160 | nhrp_zebra_init(); |
161 | nhrp_shortcut_init(); | |
162 | ||
163 | nhrp_config_init(); | |
164 | ||
eb05883f | 165 | frr_config_fork(); |
16077f2f | 166 | frr_run(master); |
2fb975da TT |
167 | return 0; |
168 | } |