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457eb9af PJ |
1 | /* main routine. |
2 | * Copyright (C) 1997, 98 Kunihiro Ishiguro | |
3 | * | |
4 | * GNU Zebra is free software; you can redistribute it and/or modify it | |
5 | * under the terms of the GNU General Public License as published by the | |
6 | * Free Software Foundation; either version 2, or (at your option) any | |
7 | * later version. | |
8 | * | |
9 | * GNU Zebra is distributed in the hope that it will be useful, but | |
10 | * WITHOUT ANY WARRANTY; without even the implied warranty of | |
11 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
12 | * General Public License for more details. | |
13 | * | |
14 | * You should have received a copy of the GNU General Public License | |
15 | * along with GNU Zebra; see the file COPYING. If not, write to the Free | |
16 | * Software Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA | |
17 | * 02111-1307, USA. | |
18 | */ | |
19 | ||
20 | #include <zebra.h> | |
21 | ||
22 | #include <lib/version.h> | |
23 | #include "getopt.h" | |
24 | #include "command.h" | |
25 | #include "thread.h" | |
26 | #include "filter.h" | |
27 | #include "memory.h" | |
28 | #include "prefix.h" | |
29 | #include "log.h" | |
30 | #include "privs.h" | |
31 | #include "sigevent.h" | |
32 | ||
33 | #include "zebra/rib.h" | |
34 | #include "zebra/zserv.h" | |
35 | #include "zebra/debug.h" | |
36 | #include "zebra/router-id.h" | |
37 | #include "zebra/interface.h" | |
38 | ||
39 | /* Zebra instance */ | |
40 | struct zebra_t zebrad = | |
41 | { | |
42 | .rtm_table_default = 0, | |
43 | }; | |
44 | ||
45 | /* process id. */ | |
457eb9af PJ |
46 | pid_t pid; |
47 | ||
48 | /* zebra_rib's workqueue hold time. Private export for use by test code only */ | |
49 | extern int rib_process_hold_time; | |
50 | ||
51 | /* Pacify zclient.o in libzebra, which expects this variable. */ | |
52 | struct thread_master *master; | |
53 | ||
54 | /* Command line options. */ | |
55 | struct option longopts[] = | |
56 | { | |
57 | { "batch", no_argument, NULL, 'b'}, | |
58 | { "daemon", no_argument, NULL, 'd'}, | |
457eb9af PJ |
59 | { "config_file", required_argument, NULL, 'f'}, |
60 | { "help", no_argument, NULL, 'h'}, | |
61 | { "vty_addr", required_argument, NULL, 'A'}, | |
62 | { "vty_port", required_argument, NULL, 'P'}, | |
63 | { "version", no_argument, NULL, 'v'}, | |
64 | { "rib_hold", required_argument, NULL, 'r'}, | |
65 | { 0 } | |
66 | }; | |
67 | ||
68 | zebra_capabilities_t _caps_p [] = | |
69 | { | |
70 | ZCAP_NET_ADMIN, | |
71 | ZCAP_SYS_ADMIN, | |
72 | ZCAP_NET_RAW, | |
73 | }; | |
74 | ||
75 | /* Default configuration file path. */ | |
76 | char config_default[] = SYSCONFDIR DEFAULT_CONFIG_FILE; | |
77 | ||
78 | /* Process ID saved for use by init system */ | |
79 | const char *pid_file = PATH_ZEBRA_PID; | |
80 | ||
81 | /* Help information display. */ | |
82 | static void | |
83 | usage (char *progname, int status) | |
84 | { | |
85 | if (status != 0) | |
86 | fprintf (stderr, "Try `%s --help' for more information.\n", progname); | |
87 | else | |
88 | { | |
89 | printf ("Usage : %s [OPTION...]\n\n"\ | |
90 | "Daemon which manages kernel routing table management and "\ | |
91 | "redistribution between different routing protocols.\n\n"\ | |
92 | "-b, --batch Runs in batch mode\n"\ | |
93 | "-d, --daemon Runs in daemon mode\n"\ | |
94 | "-f, --config_file Set configuration file name\n"\ | |
457eb9af PJ |
95 | "-A, --vty_addr Set vty's bind address\n"\ |
96 | "-P, --vty_port Set vty's port number\n"\ | |
97 | "-r, --rib_hold Set rib-queue hold time\n"\ | |
98 | "-v, --version Print program version\n"\ | |
99 | "-h, --help Display this help and exit\n"\ | |
100 | "\n"\ | |
101 | "Report bugs to %s\n", progname, ZEBRA_BUG_ADDRESS); | |
102 | } | |
103 | ||
104 | exit (status); | |
105 | } | |
106 | \f | |
107 | static unsigned int test_ifindex = 0; | |
108 | ||
109 | /* testrib commands */ | |
110 | DEFUN (test_interface_state, | |
111 | test_interface_state_cmd, | |
112 | "state (up|down)", | |
113 | "configure interface\n" | |
114 | "up\n" | |
115 | "down\n") | |
116 | { | |
117 | struct interface *ifp; | |
118 | if (argc < 1) | |
119 | return CMD_WARNING; | |
120 | ||
121 | ifp = vty->index; | |
122 | if (ifp->ifindex == IFINDEX_INTERNAL) | |
123 | { | |
124 | ifp->ifindex = ++test_ifindex; | |
125 | ifp->mtu = 1500; | |
126 | ifp->flags = IFF_BROADCAST|IFF_MULTICAST; | |
127 | } | |
128 | ||
129 | switch (argv[0][0]) | |
130 | { | |
131 | case 'u': | |
132 | SET_FLAG (ifp->flags, IFF_UP); | |
133 | if_add_update (ifp); | |
134 | printf ("up\n"); | |
135 | break; | |
136 | case 'd': | |
137 | UNSET_FLAG (ifp->flags, IFF_UP); | |
138 | if_delete_update (ifp); | |
139 | printf ("down\n"); | |
140 | break; | |
141 | default: | |
142 | return CMD_WARNING; | |
143 | } | |
144 | return CMD_SUCCESS; | |
145 | } | |
146 | ||
147 | static void | |
148 | test_cmd_init (void) | |
149 | { | |
150 | install_element (INTERFACE_NODE, &test_interface_state_cmd); | |
151 | } | |
152 | \f | |
153 | /* SIGHUP handler. */ | |
154 | static void | |
155 | sighup (void) | |
156 | { | |
157 | zlog_info ("SIGHUP received"); | |
158 | ||
159 | /* Reload of config file. */ | |
160 | ; | |
161 | } | |
162 | ||
163 | /* SIGINT handler. */ | |
164 | static void | |
165 | sigint (void) | |
166 | { | |
167 | zlog_notice ("Terminating on signal"); | |
168 | ||
169 | exit (0); | |
170 | } | |
171 | ||
172 | /* SIGUSR1 handler. */ | |
173 | static void | |
174 | sigusr1 (void) | |
175 | { | |
176 | zlog_rotate (NULL); | |
177 | } | |
178 | ||
179 | struct quagga_signal_t zebra_signals[] = | |
180 | { | |
181 | { | |
182 | .signal = SIGHUP, | |
183 | .handler = &sighup, | |
184 | }, | |
185 | { | |
186 | .signal = SIGUSR1, | |
187 | .handler = &sigusr1, | |
188 | }, | |
189 | { | |
190 | .signal = SIGINT, | |
191 | .handler = &sigint, | |
192 | }, | |
193 | { | |
194 | .signal = SIGTERM, | |
195 | .handler = &sigint, | |
196 | }, | |
197 | }; | |
198 | \f | |
199 | /* Main startup routine. */ | |
200 | int | |
201 | main (int argc, char **argv) | |
202 | { | |
203 | char *p; | |
204 | char *vty_addr = NULL; | |
205 | int vty_port = 0; | |
206 | int batch_mode = 0; | |
207 | int daemon_mode = 0; | |
208 | char *config_file = NULL; | |
209 | char *progname; | |
210 | struct thread thread; | |
211 | ||
212 | /* Set umask before anything for security */ | |
213 | umask (0027); | |
214 | ||
215 | /* preserve my name */ | |
216 | progname = ((p = strrchr (argv[0], '/')) ? ++p : argv[0]); | |
217 | ||
218 | zlog_default = openzlog (progname, ZLOG_ZEBRA, | |
219 | LOG_CONS|LOG_NDELAY|LOG_PID, LOG_DAEMON); | |
220 | ||
221 | while (1) | |
222 | { | |
223 | int opt; | |
224 | ||
c77cffdd | 225 | opt = getopt_long (argc, argv, "bdf:hA:P:r:v", longopts, 0); |
457eb9af PJ |
226 | |
227 | if (opt == EOF) | |
228 | break; | |
229 | ||
230 | switch (opt) | |
231 | { | |
232 | case 0: | |
233 | break; | |
234 | case 'b': | |
235 | batch_mode = 1; | |
236 | case 'd': | |
237 | daemon_mode = 1; | |
238 | break; | |
457eb9af PJ |
239 | case 'f': |
240 | config_file = optarg; | |
241 | break; | |
242 | case 'A': | |
243 | vty_addr = optarg; | |
244 | break; | |
245 | case 'P': | |
246 | /* Deal with atoi() returning 0 on failure, and zebra not | |
247 | listening on zebra port... */ | |
248 | if (strcmp(optarg, "0") == 0) | |
249 | { | |
250 | vty_port = 0; | |
251 | break; | |
252 | } | |
253 | vty_port = atoi (optarg); | |
254 | break; | |
255 | case 'r': | |
256 | rib_process_hold_time = atoi(optarg); | |
257 | break; | |
258 | case 'v': | |
259 | print_version (progname); | |
260 | exit (0); | |
261 | break; | |
262 | case 'h': | |
263 | usage (progname, 0); | |
264 | break; | |
265 | default: | |
266 | usage (progname, 1); | |
267 | break; | |
268 | } | |
269 | } | |
270 | ||
271 | /* port and conf file mandatory */ | |
272 | if (!vty_port || !config_file) | |
302d53f7 PJ |
273 | { |
274 | fprintf (stderr, "Error: --vty_port and --config_file arguments" | |
275 | " are both required\n"); | |
276 | usage (progname, 1); | |
277 | } | |
457eb9af PJ |
278 | |
279 | /* Make master thread emulator. */ | |
280 | zebrad.master = thread_master_create (); | |
281 | ||
282 | /* Vty related initialize. */ | |
837d16cc | 283 | signal_init (zebrad.master, array_size(zebra_signals), zebra_signals); |
457eb9af PJ |
284 | cmd_init (1); |
285 | vty_init (zebrad.master); | |
286 | memory_init (); | |
287 | if_init(); | |
288 | zebra_debug_init (); | |
289 | zebra_if_init (); | |
290 | test_cmd_init (); | |
291 | ||
292 | /* Zebra related initialize. */ | |
293 | rib_init (); | |
294 | access_list_init (); | |
295 | ||
296 | /* Make kernel routing socket. */ | |
297 | kernel_init (); | |
298 | route_read (); | |
299 | zebra_vty_init(); | |
300 | ||
457eb9af PJ |
301 | /* Configuration file read*/ |
302 | vty_read_config (config_file, config_default); | |
303 | ||
304 | /* Clean up rib. */ | |
305 | rib_weed_tables (); | |
306 | ||
307 | /* Exit when zebra is working in batch mode. */ | |
308 | if (batch_mode) | |
309 | exit (0); | |
310 | ||
457eb9af | 311 | /* Daemonize. */ |
065de903 SH |
312 | if (daemon_mode && daemon (0, 0) < 0) |
313 | { | |
314 | perror("daemon start failed"); | |
315 | exit (1); | |
316 | } | |
457eb9af PJ |
317 | |
318 | /* Needed for BSD routing socket. */ | |
319 | pid = getpid (); | |
320 | ||
321 | /* Make vty server socket. */ | |
322 | vty_serv_sock (vty_addr, vty_port, "/tmp/test_zebra"); | |
323 | ||
324 | /* Print banner. */ | |
325 | zlog_notice ("Zebra %s starting: vty@%d", QUAGGA_VERSION, vty_port); | |
326 | ||
327 | while (thread_fetch (zebrad.master, &thread)) | |
328 | thread_call (&thread); | |
329 | ||
330 | /* Not reached... */ | |
331 | return 0; | |
332 | } |