1 | /* |
1 | /* |
2 | gvpe.C -- the main file for gvpe |
2 | gvpe.C -- the main file for gvpe |
3 | Copyright (C) 1998-2002 Ivo Timmermans <ivo@o2w.nl> |
3 | Copyright (C) 1998-2002 Ivo Timmermans <ivo@o2w.nl> |
4 | 2000-2002 Guus Sliepen <guus@sliepen.eu.org> |
4 | 2000-2002 Guus Sliepen <guus@sliepen.eu.org> |
5 | 2003-2005 Marc Lehmann <gvpe@schmorp.de> |
5 | 2003-2011 Marc Lehmann <gvpe@schmorp.de> |
6 | |
6 | |
7 | This file is part of GVPE. |
7 | This file is part of GVPE. |
8 | |
8 | |
9 | GVPE is free software; you can redistribute it and/or modify |
9 | GVPE is free software; you can redistribute it and/or modify it |
10 | it under the terms of the GNU General Public License as published by |
10 | under the terms of the GNU General Public License as published by the |
11 | the Free Software Foundation; either version 2 of the License, or |
11 | Free Software Foundation; either version 3 of the License, or (at your |
12 | (at your option) any later version. |
12 | option) any later version. |
13 | |
13 | |
14 | This program is distributed in the hope that it will be useful, |
14 | This program is distributed in the hope that it will be useful, but |
15 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
15 | WITHOUT ANY WARRANTY; without even the implied warranty of |
16 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
16 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General |
17 | GNU General Public License for more details. |
17 | Public License for more details. |
18 | |
18 | |
19 | You should have received a copy of the GNU General Public License |
19 | You should have received a copy of the GNU General Public License along |
20 | along with gvpe; if not, write to the Free Software |
20 | with this program; if not, see <http://www.gnu.org/licenses/>. |
21 | Foundation, Inc. 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA |
21 | |
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22 | Additional permission under GNU GPL version 3 section 7 |
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23 | |
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24 | If you modify this Program, or any covered work, by linking or |
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25 | combining it with the OpenSSL project's OpenSSL library (or a modified |
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26 | version of that library), containing parts covered by the terms of the |
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27 | OpenSSL or SSLeay licenses, the licensors of this Program grant you |
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28 | additional permission to convey the resulting work. Corresponding |
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29 | Source for a non-source form of such a combination shall include the |
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30 | source code for the parts of OpenSSL used as well as that of the |
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31 | covered work. |
22 | */ |
32 | */ |
23 | |
33 | |
24 | #include "config.h" |
34 | #include "config.h" |
25 | |
35 | |
26 | #include <cstdio> |
36 | #include <cstdio> |
… | |
… | |
48 | |
58 | |
49 | #include "conf.h" |
59 | #include "conf.h" |
50 | #include "slog.h" |
60 | #include "slog.h" |
51 | #include "util.h" |
61 | #include "util.h" |
52 | #include "vpn.h" |
62 | #include "vpn.h" |
53 | #include "iom.h" |
63 | #include "ev_cpp.h" |
54 | |
64 | |
55 | static loglevel llevel = L_NONE; |
65 | static loglevel llevel = L_NONE; |
56 | |
66 | |
57 | /* If nonzero, display usage information and exit. */ |
67 | /* If nonzero, display usage information and exit. */ |
58 | static int show_help; |
68 | static int show_help; |
… | |
… | |
65 | |
75 | |
66 | /* If zero, don't detach from the terminal. */ |
76 | /* If zero, don't detach from the terminal. */ |
67 | static int do_detach = 1; |
77 | static int do_detach = 1; |
68 | |
78 | |
69 | static struct option const long_options[] = |
79 | static struct option const long_options[] = |
70 | { |
80 | { |
71 | {"config", required_argument, NULL, 'c'}, |
81 | {"config", required_argument, NULL, 'c'}, |
72 | {"help", no_argument, &show_help, 1}, |
82 | {"help", no_argument, &show_help, 1}, |
73 | {"version", no_argument, &show_version, 1}, |
83 | {"version", no_argument, &show_version, 1}, |
74 | {"no-detach", no_argument, &do_detach, 0}, |
84 | {"no-detach", no_argument, &do_detach, 0}, |
75 | {"log-level", required_argument, NULL, 'l'}, |
85 | {"log-level", required_argument, NULL, 'l'}, |
76 | {"mlock", no_argument, &do_mlock, 1}, |
86 | {"mlock", no_argument, &do_mlock, 1}, |
77 | {NULL, 0, NULL, 0} |
87 | {NULL, 0, NULL, 0} |
78 | }; |
88 | }; |
79 | |
89 | |
80 | static void |
90 | static void |
81 | usage (int status) |
91 | usage (int status) |
82 | { |
92 | { |
83 | if (status != 0) |
93 | if (status != 0) |
… | |
… | |
87 | printf (_("Usage: %s [option]... NODENAME\n\n"), get_identity ()); |
97 | printf (_("Usage: %s [option]... NODENAME\n\n"), get_identity ()); |
88 | printf (_ |
98 | printf (_ |
89 | (" -c, --config=DIR Read configuration options from DIR.\n" |
99 | (" -c, --config=DIR Read configuration options from DIR.\n" |
90 | " -D, --no-detach Don't fork and detach.\n" |
100 | " -D, --no-detach Don't fork and detach.\n" |
91 | " -l, --log-level=LEVEL Set logging level (info, notice, warn are common).\n" |
101 | " -l, --log-level=LEVEL Set logging level (info, notice, warn are common).\n" |
92 | " -L, --mlock Lock tinc into main memory.\n" |
102 | " -L, --mlock Lock gvpe into main memory.\n" |
93 | " --help Display this help and exit.\n" |
103 | " --help Display this help and exit.\n" |
94 | " --version Output version information and exit.\n\n")); |
104 | " --version Output version information and exit.\n\n")); |
95 | printf (_("Report bugs to <gvpe@schmorp.de>.\n")); |
105 | printf (_("Report bugs to <gvpe@schmorp.de>.\n")); |
96 | } |
106 | } |
97 | |
107 | |
98 | exit (status); |
108 | exit (status); |
99 | } |
109 | } |
100 | |
110 | |
101 | void |
111 | static void |
102 | parse_options (int argc, char **argv, char **envp) |
112 | parse_options (int argc, char **argv, char **envp) |
103 | { |
113 | { |
104 | int r; |
114 | int r; |
105 | int option_index = 0; |
115 | int option_index = 0; |
106 | |
116 | |
… | |
… | |
139 | break; |
149 | break; |
140 | } |
150 | } |
141 | } |
151 | } |
142 | } |
152 | } |
143 | |
153 | |
144 | /* |
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145 | Close network connections, and terminate neatly |
154 | // close network connections, and terminate neatly |
146 | */ |
155 | static void |
147 | void cleanup_and_exit(int c) |
156 | cleanup_and_exit (int c) |
148 | { |
157 | { |
149 | network.shutdown_all (); |
158 | network.shutdown_all (); |
150 | |
159 | |
151 | if (conf.pidfilename) |
160 | if (conf.pidfilename) |
152 | remove_pid (conf.pidfilename); |
161 | remove_pid (conf.pidfilename); |
… | |
… | |
154 | slog (L_INFO, _("terminating with exit code %d"), c); |
163 | slog (L_INFO, _("terminating with exit code %d"), c); |
155 | |
164 | |
156 | exit (c); |
165 | exit (c); |
157 | } |
166 | } |
158 | |
167 | |
159 | /* |
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160 | Signal handlers. |
168 | // signal handlers |
161 | */ |
169 | static RETSIGTYPE |
162 | RETSIGTYPE |
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163 | sigterm_handler (int a) |
170 | sigterm_handler (int a) |
164 | { |
171 | { |
165 | network.events |= vpn::EVENT_SHUTDOWN; |
172 | network.events |= vpn::EVENT_SHUTDOWN; |
166 | network.event.start (0); |
173 | network.event.start (); |
167 | } |
174 | } |
168 | |
175 | |
169 | RETSIGTYPE |
176 | static RETSIGTYPE |
170 | sighup_handler (int a) |
177 | sighup_handler (int a) |
171 | { |
178 | { |
172 | network.events |= vpn::EVENT_RECONNECT; |
179 | network.events |= vpn::EVENT_RECONNECT; |
173 | network.event.start (0); |
180 | network.event.start (); |
174 | } |
181 | } |
175 | |
182 | |
176 | RETSIGTYPE |
183 | static RETSIGTYPE |
177 | sigusr1_handler (int a) |
184 | sigusr1_handler (int a) |
178 | { |
185 | { |
179 | network.dump_status (); |
186 | network.dump_status (); |
180 | } |
187 | } |
181 | |
188 | |
182 | RETSIGTYPE |
189 | static RETSIGTYPE |
183 | sigusr2_handler (int a) |
190 | sigusr2_handler (int a) |
184 | { |
191 | { |
185 | } |
192 | } |
186 | |
193 | |
187 | void |
194 | static void |
188 | setup_signals (void) |
195 | setup_signals (void) |
189 | { |
196 | { |
190 | struct sigaction act; |
197 | struct sigaction act; |
191 | |
198 | |
192 | sigfillset (&act.sa_mask); |
199 | sigfillset (&act.sa_mask); |
193 | act.sa_flags = 0; |
200 | act.sa_flags = 0; |
194 | |
201 | |
195 | act.sa_handler = sighup_handler; sigaction (SIGHUP , &act, NULL); |
202 | act.sa_handler = sighup_handler; sigaction (SIGHUP , &act, NULL); |
196 | act.sa_handler = sigusr1_handler; sigaction (SIGUSR1, &act, NULL); |
203 | act.sa_handler = sigusr1_handler; sigaction (SIGUSR1, &act, NULL); |
197 | act.sa_handler = sigusr2_handler; sigaction (SIGUSR2, &act, NULL); |
204 | act.sa_handler = sigusr2_handler; sigaction (SIGUSR2, &act, NULL); |
198 | act.sa_handler = SIG_IGN; sigaction (SIGCHLD, &act, NULL); |
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199 | act.sa_handler = SIG_IGN; sigaction (SIGPIPE, &act, NULL); |
205 | act.sa_handler = SIG_IGN; sigaction (SIGPIPE, &act, NULL); |
200 | act.sa_flags = SA_RESETHAND; |
206 | act.sa_flags = SA_RESETHAND; |
201 | act.sa_handler = sigterm_handler; sigaction (SIGINT , &act, NULL); |
207 | act.sa_handler = sigterm_handler; sigaction (SIGINT , &act, NULL); |
202 | act.sa_handler = sigterm_handler; sigaction (SIGTERM, &act, NULL); |
208 | act.sa_handler = sigterm_handler; sigaction (SIGTERM, &act, NULL); |
203 | } |
209 | } |
… | |
… | |
224 | { |
230 | { |
225 | printf (_("%s version %s (built %s %s, protocol version %d.%d)\n"), get_identity (), |
231 | printf (_("%s version %s (built %s %s, protocol version %d.%d)\n"), get_identity (), |
226 | VERSION, __DATE__, __TIME__, PROTOCOL_MAJOR, PROTOCOL_MINOR); |
232 | VERSION, __DATE__, __TIME__, PROTOCOL_MAJOR, PROTOCOL_MINOR); |
227 | printf (_("Built with kernel interface %s/%s.\n"), IFTYPE, IFSUBTYPE); |
233 | printf (_("Built with kernel interface %s/%s.\n"), IFTYPE, IFSUBTYPE); |
228 | printf (_ |
234 | printf (_ |
229 | ("Copyright (C) 2003 Marc Lehmann <gvpe@schmorp.de> and others.\n" |
235 | ("Copyright (C) 2003-2008 Marc Lehmann <gvpe@schmorp.de> and others.\n" |
230 | "See the AUTHORS file for a complete list.\n\n" |
236 | "See the AUTHORS file for a complete list.\n\n" |
231 | "tinc comes with ABSOLUTELY NO WARRANTY. This is free software,\n" |
237 | "GVPE comes with ABSOLUTELY NO WARRANTY. This is free software,\n" |
232 | "and you are welcome to redistribute it under certain conditions;\n" |
238 | "and you are welcome to redistribute it under certain conditions;\n" |
233 | "see the file COPYING for details.\n")); |
239 | "see the file COPYING for details.\n")); |
234 | |
240 | |
235 | return 0; |
241 | return 0; |
236 | } |
242 | } |
… | |
… | |
252 | { |
258 | { |
253 | thisnode = *argv++; |
259 | thisnode = *argv++; |
254 | argc--; |
260 | argc--; |
255 | } |
261 | } |
256 | |
262 | |
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263 | if (!ev_default_loop (0)) |
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264 | { |
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265 | slog (L_ERR, _("unable to initialise the event loop (bad $LIBEV_METHODS?)")); |
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266 | exit (EXIT_FAILURE); |
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267 | } |
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268 | |
257 | { |
269 | { |
258 | configuration_parser (conf, true, argc, argv); |
270 | configuration_parser (conf, true, argc, argv); |
259 | } |
271 | } |
260 | |
272 | |
261 | set_loglevel (llevel != L_NONE ? llevel : conf.llevel); |
273 | set_loglevel (llevel != L_NONE ? llevel : conf.llevel); |
… | |
… | |
273 | exit (EXIT_SUCCESS); |
285 | exit (EXIT_SUCCESS); |
274 | |
286 | |
275 | setup_signals (); |
287 | setup_signals (); |
276 | |
288 | |
277 | if (!network.setup ()) |
289 | if (!network.setup ()) |
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290 | if (network.drop_privileges ()) |
278 | { |
291 | { |
279 | io_manager::loop (); |
292 | ev_run (EV_DEFAULT_ 0); |
280 | cleanup_and_exit (EXIT_FAILURE); |
293 | cleanup_and_exit (EXIT_FAILURE); |
281 | } |
294 | } |
282 | |
295 | |
283 | slog (L_ERR, _("unable to setup network, unrecoverable error, exiting.")); |
296 | slog (L_CRIT, _("unrecoverable error while setting up network, exiting.")); |
284 | cleanup_and_exit (EXIT_FAILURE); |
297 | cleanup_and_exit (EXIT_FAILURE); |
285 | } |
298 | } |
286 | |
299 | |