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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" | |
26 | ||
819dc8bb DL |
27 | DEFINE_MGROUP(NHRPD, "NHRP") |
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, | |
53 | .cap_num_p = ZEBRA_NUM_OF(_caps_p), | |
54 | }; | |
55 | ||
4f04a76b | 56 | static void parse_arguments(int argc, char **argv) |
2fb975da TT |
57 | { |
58 | int opt; | |
59 | ||
60 | while (1) { | |
4f04a76b | 61 | opt = frr_getopt(argc, argv, 0); |
996c9314 LB |
62 | if (opt < 0) |
63 | break; | |
2fb975da TT |
64 | |
65 | switch (opt) { | |
66 | case 0: | |
67 | break; | |
2fb975da | 68 | default: |
4f04a76b | 69 | frr_help_exit(1); |
2fb975da TT |
70 | break; |
71 | } | |
72 | } | |
73 | } | |
74 | ||
75 | static void nhrp_sigusr1(void) | |
76 | { | |
dd8376fe | 77 | zlog_rotate(); |
2fb975da TT |
78 | } |
79 | ||
80 | static void nhrp_request_stop(void) | |
81 | { | |
82 | debugf(NHRP_DEBUG_COMMON, "Exiting..."); | |
03951374 | 83 | frr_early_fini(); |
2fb975da TT |
84 | |
85 | nhrp_shortcut_terminate(); | |
86 | nhrp_nhs_terminate(); | |
87 | nhrp_zebra_terminate(); | |
88 | vici_terminate(); | |
89 | evmgr_terminate(); | |
90 | nhrp_vc_terminate(); | |
91 | vrf_terminate(); | |
2fb975da | 92 | |
2fb975da | 93 | debugf(NHRP_DEBUG_COMMON, "Done."); |
03951374 | 94 | frr_fini(); |
2fb975da TT |
95 | |
96 | exit(0); | |
97 | } | |
98 | ||
99 | static struct quagga_signal_t sighandlers[] = { | |
996c9314 LB |
100 | { |
101 | .signal = SIGUSR1, | |
102 | .handler = &nhrp_sigusr1, | |
103 | }, | |
104 | { | |
105 | .signal = SIGINT, | |
106 | .handler = &nhrp_request_stop, | |
107 | }, | |
108 | { | |
109 | .signal = SIGTERM, | |
110 | .handler = &nhrp_request_stop, | |
111 | }, | |
2fb975da TT |
112 | }; |
113 | ||
996c9314 | 114 | FRR_DAEMON_INFO(nhrpd, NHRP, .vty_port = NHRP_VTY_PORT, |
4f04a76b | 115 | |
996c9314 | 116 | .proghelp = "Implementation of the NHRP routing protocol.", |
4f04a76b | 117 | |
996c9314 | 118 | .signals = sighandlers, .n_signals = array_size(sighandlers), |
4f04a76b | 119 | |
996c9314 | 120 | .privs = &nhrpd_privs, ) |
4f04a76b | 121 | |
2fb975da TT |
122 | int main(int argc, char **argv) |
123 | { | |
4f04a76b | 124 | frr_preinit(&nhrpd_di, argc, argv); |
eb05883f | 125 | frr_opt_add("", longopts, ""); |
2fb975da | 126 | |
4f04a76b | 127 | parse_arguments(argc, argv); |
2fb975da TT |
128 | |
129 | /* Library inits. */ | |
4f04a76b | 130 | master = frr_init(); |
6df85364 | 131 | vrf_init(NULL, NULL, NULL, NULL); |
818c8515 | 132 | nhrp_interface_init(); |
2fb975da TT |
133 | resolver_init(); |
134 | ||
135 | /* Run with elevated capabilities, as for all netlink activity | |
136 | * we need privileges anyway. */ | |
137 | nhrpd_privs.change(ZPRIVS_RAISE); | |
138 | ||
139 | netlink_init(); | |
140 | evmgr_init(); | |
141 | nhrp_vc_init(); | |
142 | nhrp_packet_init(); | |
143 | vici_init(); | |
144 | nhrp_zebra_init(); | |
145 | nhrp_shortcut_init(); | |
146 | ||
147 | nhrp_config_init(); | |
148 | ||
eb05883f | 149 | frr_config_fork(); |
16077f2f | 150 | frr_run(master); |
2fb975da TT |
151 | return 0; |
152 | } |