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718e3744 | 1 | /* |
2 | * RIPngd main routine. | |
3 | * Copyright (C) 1998, 1999 Kunihiro Ishiguro | |
4 | * | |
5 | * This file is part of GNU Zebra. | |
6 | * | |
7 | * GNU Zebra is free software; you can redistribute it and/or modify it | |
8 | * under the terms of the GNU General Public License as published by the | |
9 | * Free Software Foundation; either version 2, or (at your option) any | |
10 | * later version. | |
11 | * | |
12 | * GNU Zebra is distributed in the hope that it will be useful, but | |
13 | * WITHOUT ANY WARRANTY; without even the implied warranty of | |
14 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
15 | * General Public License for more details. | |
16 | * | |
17 | * You should have received a copy of the GNU General Public License | |
18 | * along with GNU Zebra; see the file COPYING. If not, write to the Free | |
19 | * Software Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA | |
20 | * 02111-1307, USA. | |
21 | */ | |
22 | ||
23 | #include <zebra.h> | |
24 | ||
25 | #include "version.h" | |
26 | #include "getopt.h" | |
27 | #include "vector.h" | |
28 | #include "vty.h" | |
29 | #include "command.h" | |
30 | #include "thread.h" | |
31 | #include "log.h" | |
32 | #include "prefix.h" | |
33 | #include "if.h" | |
34 | ||
35 | #include "ripngd/ripngd.h" | |
36 | ||
37 | /* Configuration filename and directory. */ | |
38 | char config_current[] = RIPNG_DEFAULT_CONFIG; | |
39 | char config_default[] = SYSCONFDIR RIPNG_DEFAULT_CONFIG; | |
40 | ||
41 | /* RIPngd options. */ | |
42 | struct option longopts[] = | |
43 | { | |
44 | { "daemon", no_argument, NULL, 'd'}, | |
45 | { "config_file", required_argument, NULL, 'f'}, | |
46 | { "pid_file", required_argument, NULL, 'i'}, | |
47 | { "log_mode", no_argument, NULL, 'l'}, | |
48 | { "help", no_argument, NULL, 'h'}, | |
49 | { "vty_addr", required_argument, NULL, 'A'}, | |
50 | { "vty_port", required_argument, NULL, 'P'}, | |
51 | { "retain", no_argument, NULL, 'r'}, | |
52 | { "version", no_argument, NULL, 'v'}, | |
53 | { 0 } | |
54 | }; | |
55 | ||
56 | /* RIPngd program name */ | |
57 | ||
58 | /* Route retain mode flag. */ | |
59 | int retain_mode = 0; | |
60 | ||
61 | /* Master of threads. */ | |
62 | struct thread_master *master; | |
63 | ||
64 | /* Process ID saved for use by init system */ | |
65 | char *pid_file = PATH_RIPNGD_PID; | |
66 | ||
67 | /* Help information display. */ | |
68 | static void | |
69 | usage (char *progname, int status) | |
70 | { | |
71 | if (status != 0) | |
72 | fprintf (stderr, "Try `%s --help' for more information.\n", progname); | |
73 | else | |
74 | { | |
75 | printf ("Usage : %s [OPTION...]\n\ | |
76 | Daemon which manages RIPng.\n\n\ | |
77 | -d, --daemon Runs in daemon mode\n\ | |
78 | -f, --config_file Set configuration file name\n\ | |
79 | -i, --pid_file Set process identifier file name\n\ | |
80 | -l. --log_mode Set verbose log mode flag\n\ | |
81 | -A, --vty_addr Set vty's bind address\n\ | |
82 | -P, --vty_port Set vty's port number\n\ | |
83 | -r, --retain When program terminates, retain added route by ripngd.\n\ | |
84 | -v, --version Print program version\n\ | |
85 | -h, --help Display this help and exit\n\ | |
86 | \n\ | |
87 | Report bugs to %s\n", progname, ZEBRA_BUG_ADDRESS); | |
88 | } | |
89 | exit (status); | |
90 | } | |
91 | \f | |
92 | /* SIGHUP handler. */ | |
93 | void | |
94 | sighup (int sig) | |
95 | { | |
96 | zlog (NULL, LOG_INFO, "SIGHUP received"); | |
97 | } | |
98 | ||
99 | /* SIGINT handler. */ | |
100 | void | |
101 | sigint (int sig) | |
102 | { | |
103 | zlog (NULL, LOG_INFO, "Terminating on signal"); | |
104 | ||
105 | if (! retain_mode) | |
106 | ripng_terminate (); | |
107 | ||
108 | exit (0); | |
109 | } | |
110 | ||
111 | /* SIGUSR1 handler. */ | |
112 | void | |
113 | sigusr1 (int sig) | |
114 | { | |
115 | zlog_rotate (NULL); | |
116 | } | |
117 | ||
118 | /* Signale wrapper. */ | |
119 | RETSIGTYPE * | |
120 | signal_set (int signo, void (*func)(int)) | |
121 | { | |
122 | int ret; | |
123 | struct sigaction sig; | |
124 | struct sigaction osig; | |
125 | ||
126 | sig.sa_handler = func; | |
127 | sigemptyset (&sig.sa_mask); | |
128 | sig.sa_flags = 0; | |
129 | #ifdef SA_RESTART | |
130 | sig.sa_flags |= SA_RESTART; | |
131 | #endif /* SA_RESTART */ | |
132 | ||
133 | ret = sigaction (signo, &sig, &osig); | |
134 | ||
135 | if (ret < 0) | |
136 | return (SIG_ERR); | |
137 | else | |
138 | return (osig.sa_handler); | |
139 | } | |
140 | ||
141 | /* Initialization of signal handles. */ | |
142 | void | |
143 | signal_init () | |
144 | { | |
145 | signal_set (SIGHUP, sighup); | |
146 | signal_set (SIGINT, sigint); | |
147 | signal_set (SIGTERM, sigint); | |
148 | signal_set (SIGPIPE, SIG_IGN); | |
149 | signal_set (SIGUSR1, sigusr1); | |
150 | } | |
151 | \f | |
152 | /* RIPngd main routine. */ | |
153 | int | |
154 | main (int argc, char **argv) | |
155 | { | |
156 | char *p; | |
157 | char *vty_addr = NULL; | |
158 | int vty_port = 0; | |
159 | int daemon_mode = 0; | |
160 | char *config_file = NULL; | |
161 | char *progname; | |
162 | struct thread thread; | |
163 | ||
164 | /* Set umask before anything for security */ | |
165 | umask (0027); | |
166 | ||
167 | /* get program name */ | |
168 | progname = ((p = strrchr (argv[0], '/')) ? ++p : argv[0]); | |
169 | ||
170 | zlog_default = openzlog(progname, ZLOG_NOLOG, ZLOG_RIPNG, | |
171 | LOG_CONS|LOG_NDELAY|LOG_PID, LOG_DAEMON); | |
172 | ||
173 | while (1) | |
174 | { | |
175 | int opt; | |
176 | ||
177 | opt = getopt_long (argc, argv, "dlf:hA:P:v", longopts, 0); | |
178 | ||
179 | if (opt == EOF) | |
180 | break; | |
181 | ||
182 | switch (opt) | |
183 | { | |
184 | case 0: | |
185 | break; | |
186 | case 'd': | |
187 | daemon_mode = 1; | |
188 | break; | |
189 | case 'l': | |
190 | /* log_mode = 1; */ | |
191 | break; | |
192 | case 'f': | |
193 | config_file = optarg; | |
194 | break; | |
195 | case 'A': | |
196 | vty_addr = optarg; | |
197 | break; | |
198 | case 'i': | |
199 | pid_file = optarg; | |
200 | break; | |
201 | case 'P': | |
202 | vty_port = atoi (optarg); | |
203 | break; | |
204 | case 'r': | |
205 | retain_mode = 1; | |
206 | break; | |
207 | case 'v': | |
208 | print_version (progname); | |
209 | exit (0); | |
210 | break; | |
211 | case 'h': | |
212 | usage (progname, 0); | |
213 | break; | |
214 | default: | |
215 | usage (progname, 1); | |
216 | break; | |
217 | } | |
218 | } | |
219 | ||
220 | master = thread_master_create (); | |
221 | ||
222 | /* Library inits. */ | |
223 | signal_init (); | |
224 | cmd_init (1); | |
225 | vty_init (); | |
226 | ||
227 | /* RIPngd inits. */ | |
228 | ripng_init (); | |
229 | zebra_init (); | |
230 | sort_node (); | |
231 | ||
232 | /* Get configuration file. */ | |
233 | vty_read_config (config_file, config_current, config_default); | |
234 | ||
235 | /* Change to the daemon program. */ | |
236 | if (daemon_mode) | |
237 | daemon (0, 0); | |
238 | ||
239 | /* Create VTY socket */ | |
240 | vty_serv_sock (vty_addr, | |
241 | vty_port ? vty_port : RIPNG_VTY_PORT, RIPNG_VTYSH_PATH); | |
242 | ||
243 | /* Process id file create. */ | |
244 | pid_output (pid_file); | |
245 | ||
246 | /* Fetch next active thread. */ | |
247 | while (thread_fetch (master, &thread)) | |
248 | thread_call (&thread); | |
249 | ||
250 | /* Not reached. */ | |
251 | exit (0); | |
252 | } |