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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 | ||
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" | |
17 | #include "version.h" | |
18 | #include "log.h" | |
19 | #include "memory.h" | |
819dc8bb | 20 | #include "memory_vty.h" |
2fb975da | 21 | #include "command.h" |
4f04a76b | 22 | #include "libfrr.h" |
2fb975da TT |
23 | |
24 | #include "nhrpd.h" | |
25 | #include "netlink.h" | |
aed07011 | 26 | #include "nhrp_errors.h" |
2fb975da | 27 | |
819dc8bb DL |
28 | DEFINE_MGROUP(NHRPD, "NHRP") |
29 | ||
2fb975da TT |
30 | unsigned int debug_flags = 0; |
31 | ||
32 | struct thread_master *master; | |
33 | struct timeval current_time; | |
2fb975da TT |
34 | |
35 | /* nhrpd options. */ | |
996c9314 | 36 | struct option longopts[] = {{0}}; |
2fb975da TT |
37 | |
38 | /* nhrpd privileges */ | |
996c9314 LB |
39 | static zebra_capabilities_t _caps_p[] = { |
40 | ZCAP_NET_RAW, ZCAP_NET_ADMIN, | |
41 | ZCAP_DAC_OVERRIDE, /* for now needed to write to | |
42 | /proc/sys/net/ipv4/<if>/send_redirect */ | |
2fb975da TT |
43 | }; |
44 | ||
26efbc7b | 45 | struct zebra_privs_t nhrpd_privs = { |
54b7b88b HWC |
46 | #if defined(FRR_USER) && defined(FRR_GROUP) |
47 | .user = FRR_USER, | |
48 | .group = FRR_GROUP, | |
2fb975da TT |
49 | #endif |
50 | #ifdef VTY_GROUP | |
51 | .vty_group = VTY_GROUP, | |
52 | #endif | |
53 | .caps_p = _caps_p, | |
54 | .cap_num_p = ZEBRA_NUM_OF(_caps_p), | |
55 | }; | |
56 | ||
4f04a76b | 57 | static void parse_arguments(int argc, char **argv) |
2fb975da TT |
58 | { |
59 | int opt; | |
60 | ||
61 | while (1) { | |
4f04a76b | 62 | opt = frr_getopt(argc, argv, 0); |
996c9314 LB |
63 | if (opt < 0) |
64 | break; | |
2fb975da TT |
65 | |
66 | switch (opt) { | |
67 | case 0: | |
68 | break; | |
2fb975da | 69 | default: |
4f04a76b | 70 | frr_help_exit(1); |
2fb975da TT |
71 | break; |
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 | ||
100 | static struct quagga_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 | ||
996c9314 | 115 | FRR_DAEMON_INFO(nhrpd, NHRP, .vty_port = NHRP_VTY_PORT, |
4f04a76b | 116 | |
996c9314 | 117 | .proghelp = "Implementation of the NHRP routing protocol.", |
4f04a76b | 118 | |
996c9314 | 119 | .signals = sighandlers, .n_signals = array_size(sighandlers), |
4f04a76b | 120 | |
996c9314 | 121 | .privs = &nhrpd_privs, ) |
4f04a76b | 122 | |
2fb975da TT |
123 | int main(int argc, char **argv) |
124 | { | |
4f04a76b | 125 | frr_preinit(&nhrpd_di, argc, argv); |
eb05883f | 126 | frr_opt_add("", longopts, ""); |
2fb975da | 127 | |
4f04a76b | 128 | parse_arguments(argc, argv); |
2fb975da TT |
129 | |
130 | /* Library inits. */ | |
4f04a76b | 131 | master = frr_init(); |
aed07011 | 132 | nhrp_error_init(); |
6df85364 | 133 | vrf_init(NULL, NULL, NULL, NULL); |
818c8515 | 134 | nhrp_interface_init(); |
2fb975da TT |
135 | resolver_init(); |
136 | ||
137 | /* Run with elevated capabilities, as for all netlink activity | |
138 | * we need privileges anyway. */ | |
139 | nhrpd_privs.change(ZPRIVS_RAISE); | |
140 | ||
141 | netlink_init(); | |
142 | evmgr_init(); | |
143 | nhrp_vc_init(); | |
144 | nhrp_packet_init(); | |
145 | vici_init(); | |
146 | nhrp_zebra_init(); | |
147 | nhrp_shortcut_init(); | |
148 | ||
149 | nhrp_config_init(); | |
150 | ||
eb05883f | 151 | frr_config_fork(); |
16077f2f | 152 | frr_run(master); |
2fb975da TT |
153 | return 0; |
154 | } |