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2fb975da TT |
1 | /* NHRP daemon main functions |
2 | * Copyright (c) 2014-2015 Timo Teräs | |
3 | * | |
4 | * This file is free software: you may copy, redistribute and/or modify | |
5 | * it under the terms of the GNU General Public License as published by | |
6 | * the Free Software Foundation, either version 2 of the License, or | |
7 | * (at your option) any later version. | |
8 | */ | |
9 | ||
b45ac5f5 DL |
10 | #ifdef HAVE_CONFIG_H |
11 | #include "config.h" | |
12 | #endif | |
13 | ||
2fb975da TT |
14 | #include <unistd.h> |
15 | ||
16 | #include "zebra.h" | |
17 | #include "privs.h" | |
18 | #include "getopt.h" | |
19 | #include "thread.h" | |
20 | #include "sigevent.h" | |
21 | #include "version.h" | |
22 | #include "log.h" | |
23 | #include "memory.h" | |
819dc8bb | 24 | #include "memory_vty.h" |
2fb975da | 25 | #include "command.h" |
4f04a76b | 26 | #include "libfrr.h" |
2fb975da TT |
27 | |
28 | #include "nhrpd.h" | |
29 | #include "netlink.h" | |
aed07011 | 30 | #include "nhrp_errors.h" |
2fb975da | 31 | |
819dc8bb DL |
32 | DEFINE_MGROUP(NHRPD, "NHRP") |
33 | ||
2fb975da TT |
34 | unsigned int debug_flags = 0; |
35 | ||
36 | struct thread_master *master; | |
37 | struct timeval current_time; | |
2fb975da TT |
38 | |
39 | /* nhrpd options. */ | |
996c9314 | 40 | struct option longopts[] = {{0}}; |
2fb975da TT |
41 | |
42 | /* nhrpd privileges */ | |
996c9314 LB |
43 | static zebra_capabilities_t _caps_p[] = { |
44 | ZCAP_NET_RAW, ZCAP_NET_ADMIN, | |
45 | ZCAP_DAC_OVERRIDE, /* for now needed to write to | |
46 | /proc/sys/net/ipv4/<if>/send_redirect */ | |
2fb975da TT |
47 | }; |
48 | ||
26efbc7b | 49 | struct zebra_privs_t nhrpd_privs = { |
54b7b88b HWC |
50 | #if defined(FRR_USER) && defined(FRR_GROUP) |
51 | .user = FRR_USER, | |
52 | .group = FRR_GROUP, | |
2fb975da TT |
53 | #endif |
54 | #ifdef VTY_GROUP | |
55 | .vty_group = VTY_GROUP, | |
56 | #endif | |
57 | .caps_p = _caps_p, | |
7e3a1ec7 | 58 | .cap_num_p = array_size(_caps_p), |
2fb975da TT |
59 | }; |
60 | ||
4f04a76b | 61 | static void parse_arguments(int argc, char **argv) |
2fb975da TT |
62 | { |
63 | int opt; | |
64 | ||
65 | while (1) { | |
4f04a76b | 66 | opt = frr_getopt(argc, argv, 0); |
996c9314 LB |
67 | if (opt < 0) |
68 | break; | |
2fb975da TT |
69 | |
70 | switch (opt) { | |
71 | case 0: | |
72 | break; | |
2fb975da | 73 | default: |
4f04a76b | 74 | frr_help_exit(1); |
2fb975da TT |
75 | break; |
76 | } | |
77 | } | |
78 | } | |
79 | ||
80 | static void nhrp_sigusr1(void) | |
81 | { | |
dd8376fe | 82 | zlog_rotate(); |
2fb975da TT |
83 | } |
84 | ||
85 | static void nhrp_request_stop(void) | |
86 | { | |
87 | debugf(NHRP_DEBUG_COMMON, "Exiting..."); | |
03951374 | 88 | frr_early_fini(); |
2fb975da TT |
89 | |
90 | nhrp_shortcut_terminate(); | |
91 | nhrp_nhs_terminate(); | |
92 | nhrp_zebra_terminate(); | |
93 | vici_terminate(); | |
94 | evmgr_terminate(); | |
95 | nhrp_vc_terminate(); | |
96 | vrf_terminate(); | |
2fb975da | 97 | |
2fb975da | 98 | debugf(NHRP_DEBUG_COMMON, "Done."); |
03951374 | 99 | frr_fini(); |
2fb975da TT |
100 | |
101 | exit(0); | |
102 | } | |
103 | ||
104 | static struct quagga_signal_t sighandlers[] = { | |
996c9314 LB |
105 | { |
106 | .signal = SIGUSR1, | |
107 | .handler = &nhrp_sigusr1, | |
108 | }, | |
109 | { | |
110 | .signal = SIGINT, | |
111 | .handler = &nhrp_request_stop, | |
112 | }, | |
113 | { | |
114 | .signal = SIGTERM, | |
115 | .handler = &nhrp_request_stop, | |
116 | }, | |
2fb975da TT |
117 | }; |
118 | ||
8fcdd0d6 | 119 | static const struct frr_yang_module_info *nhrpd_yang_modules[] = { |
a4bed468 | 120 | &frr_interface_info, |
8fcdd0d6 RW |
121 | }; |
122 | ||
996c9314 | 123 | FRR_DAEMON_INFO(nhrpd, NHRP, .vty_port = NHRP_VTY_PORT, |
4f04a76b | 124 | |
996c9314 | 125 | .proghelp = "Implementation of the NHRP routing protocol.", |
4f04a76b | 126 | |
996c9314 | 127 | .signals = sighandlers, .n_signals = array_size(sighandlers), |
4f04a76b | 128 | |
8fcdd0d6 RW |
129 | .privs = &nhrpd_privs, .yang_modules = nhrpd_yang_modules, |
130 | .n_yang_modules = array_size(nhrpd_yang_modules), ) | |
4f04a76b | 131 | |
2fb975da TT |
132 | int main(int argc, char **argv) |
133 | { | |
4f04a76b | 134 | frr_preinit(&nhrpd_di, argc, argv); |
eb05883f | 135 | frr_opt_add("", longopts, ""); |
2fb975da | 136 | |
4f04a76b | 137 | parse_arguments(argc, argv); |
2fb975da TT |
138 | |
139 | /* Library inits. */ | |
4f04a76b | 140 | master = frr_init(); |
aed07011 | 141 | nhrp_error_init(); |
ecbc5a37 | 142 | vrf_init(NULL, NULL, NULL, NULL, NULL); |
818c8515 | 143 | nhrp_interface_init(); |
2fb975da TT |
144 | resolver_init(); |
145 | ||
146 | /* Run with elevated capabilities, as for all netlink activity | |
147 | * we need privileges anyway. */ | |
148 | nhrpd_privs.change(ZPRIVS_RAISE); | |
149 | ||
150 | netlink_init(); | |
151 | evmgr_init(); | |
152 | nhrp_vc_init(); | |
153 | nhrp_packet_init(); | |
154 | vici_init(); | |
155 | nhrp_zebra_init(); | |
156 | nhrp_shortcut_init(); | |
157 | ||
158 | nhrp_config_init(); | |
159 | ||
eb05883f | 160 | frr_config_fork(); |
16077f2f | 161 | frr_run(master); |
2fb975da TT |
162 | return 0; |
163 | } |