1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
|
/* NHRP daemon main functions
* Copyright (c) 2014-2015 Timo Teräs
*
* This file is free software: you may copy, redistribute and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 2 of the License, or
* (at your option) any later version.
*/
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include <unistd.h>
#include "zebra.h"
#include "privs.h"
#include "getopt.h"
#include "thread.h"
#include "sigevent.h"
#include "lib/version.h"
#include "log.h"
#include "memory.h"
#include "command.h"
#include "libfrr.h"
#include "filter.h"
#include "nhrpd.h"
#include "nhrp_errors.h"
DEFINE_MGROUP(NHRPD, "NHRP");
unsigned int debug_flags = 0;
struct thread_master *master;
struct timeval current_time;
/* nhrpd options. */
struct option longopts[] = {{0}};
/* nhrpd privileges */
static zebra_capabilities_t _caps_p[] = {
ZCAP_NET_RAW, ZCAP_NET_ADMIN,
ZCAP_DAC_OVERRIDE, /* for now needed to write to
/proc/sys/net/ipv4/<if>/send_redirect */
};
struct zebra_privs_t nhrpd_privs = {
#if defined(FRR_USER) && defined(FRR_GROUP)
.user = FRR_USER,
.group = FRR_GROUP,
#endif
#ifdef VTY_GROUP
.vty_group = VTY_GROUP,
#endif
.caps_p = _caps_p,
.cap_num_p = array_size(_caps_p),
.cap_num_i = 0
};
static void parse_arguments(int argc, char **argv)
{
int opt;
while (1) {
opt = frr_getopt(argc, argv, 0);
if (opt < 0)
break;
switch (opt) {
case 0:
break;
default:
frr_help_exit(1);
}
}
}
static void nhrp_sigusr1(void)
{
zlog_rotate();
}
static void nhrp_request_stop(void)
{
debugf(NHRP_DEBUG_COMMON, "Exiting...");
frr_early_fini();
nhrp_shortcut_terminate();
nhrp_nhs_terminate();
nhrp_zebra_terminate();
vici_terminate();
evmgr_terminate();
nhrp_vc_terminate();
vrf_terminate();
debugf(NHRP_DEBUG_COMMON, "Done.");
frr_fini();
exit(0);
}
static struct frr_signal_t sighandlers[] = {
{
.signal = SIGUSR1,
.handler = &nhrp_sigusr1,
},
{
.signal = SIGINT,
.handler = &nhrp_request_stop,
},
{
.signal = SIGTERM,
.handler = &nhrp_request_stop,
},
};
static const struct frr_yang_module_info *const nhrpd_yang_modules[] = {
&frr_filter_info,
&frr_interface_info,
&frr_vrf_info,
};
FRR_DAEMON_INFO(nhrpd, NHRP, .vty_port = NHRP_VTY_PORT,
.proghelp = "Implementation of the NHRP routing protocol.",
.signals = sighandlers, .n_signals = array_size(sighandlers),
.privs = &nhrpd_privs, .yang_modules = nhrpd_yang_modules,
.n_yang_modules = array_size(nhrpd_yang_modules),
);
int main(int argc, char **argv)
{
frr_preinit(&nhrpd_di, argc, argv);
frr_opt_add("", longopts, "");
parse_arguments(argc, argv);
/* Library inits. */
master = frr_init();
nhrp_error_init();
vrf_init(NULL, NULL, NULL, NULL);
nhrp_interface_init();
resolver_init(master);
/*
* Run with elevated capabilities, as for all netlink activity
* we need privileges anyway.
* The assert is for clang SA code where it does
* not see the change function being set in lib
*/
assert(nhrpd_privs.change);
nhrpd_privs.change(ZPRIVS_RAISE);
evmgr_init();
nhrp_vc_init();
nhrp_packet_init();
vici_init();
if_zapi_callbacks(nhrp_ifp_create, nhrp_ifp_up,
nhrp_ifp_down, nhrp_ifp_destroy);
nhrp_zebra_init();
nhrp_shortcut_init();
nhrp_config_init();
frr_config_fork();
frr_run(master);
return 0;
}
|
