1 | /* |
1 | /* |
2 | conf.c -- configuration code |
2 | conf.c -- configuration code |
3 | Copyright (C) 2003-2004 Marc Lehmann <pcg@goof.com> |
3 | Copyright (C) 2003-2005 Marc Lehmann <gvpe@schmorp.de> |
4 | |
4 | |
|
|
5 | This file is part of GVPE. |
|
|
6 | |
5 | This program is free software; you can redistribute it and/or modify |
7 | GVPE is free software; you can redistribute it and/or modify |
6 | it under the terms of the GNU General Public License as published by |
8 | it under the terms of the GNU General Public License as published by |
7 | the Free Software Foundation; either version 2 of the License, or |
9 | the Free Software Foundation; either version 2 of the License, or |
8 | (at your option) any later version. |
10 | (at your option) any later version. |
9 | |
11 | |
10 | This program is distributed in the hope that it will be useful, |
12 | This program is distributed in the hope that it will be useful, |
11 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
13 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
12 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
14 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
13 | GNU General Public License for more details. |
15 | GNU General Public License for more details. |
14 | |
16 | |
15 | You should have received a copy of the GNU General Public License |
17 | You should have received a copy of the GNU General Public License |
16 | along with this program; if not, write to the Free Software |
18 | along with gvpe; if not, write to the Free Software |
17 | Foundation, Inc. 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA |
19 | Foundation, Inc. 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA |
18 | */ |
20 | */ |
19 | |
21 | |
20 | #include "config.h" |
22 | #include "config.h" |
21 | |
23 | |
… | |
… | |
35 | #include <openssl/pem.h> |
37 | #include <openssl/pem.h> |
36 | #include <openssl/rsa.h> |
38 | #include <openssl/rsa.h> |
37 | #include <openssl/rand.h> |
39 | #include <openssl/rand.h> |
38 | #include <openssl/bn.h> |
40 | #include <openssl/bn.h> |
39 | |
41 | |
40 | #include "gettext.h" |
|
|
41 | |
|
|
42 | #include "conf.h" |
42 | #include "conf.h" |
43 | #include "slog.h" |
43 | #include "slog.h" |
44 | #include "util.h" |
44 | #include "util.h" |
45 | |
45 | |
46 | char *confbase; |
46 | char *confbase; |
47 | char *thisnode; |
47 | char *thisnode; |
48 | char *identname; |
48 | char *identname; |
49 | char *pidfilename; |
|
|
50 | |
49 | |
51 | struct configuration conf; |
50 | struct configuration conf; |
52 | |
51 | |
53 | u8 best_protocol (u8 protset) |
52 | u8 best_protocol (u8 protset) |
54 | { |
53 | { |
55 | if (protset & PROT_IPv4 ) return PROT_IPv4; |
54 | if (protset & PROT_IPv4 ) return PROT_IPv4; |
56 | if (protset & PROT_ICMPv4) return PROT_ICMPv4; |
55 | if (protset & PROT_ICMPv4) return PROT_ICMPv4; |
57 | if (protset & PROT_UDPv4 ) return PROT_UDPv4; |
56 | if (protset & PROT_UDPv4 ) return PROT_UDPv4; |
58 | if (protset & PROT_TCPv4 ) return PROT_TCPv4; |
57 | if (protset & PROT_TCPv4 ) return PROT_TCPv4; |
|
|
58 | if (protset & PROT_DNSv4 ) return PROT_DNSv4; |
59 | |
59 | |
60 | return 0; |
60 | return 0; |
61 | } |
61 | } |
62 | |
62 | |
63 | const char *strprotocol (u8 protocol) |
63 | const char *strprotocol (u8 protocol) |
64 | { |
64 | { |
65 | if (protocol & PROT_IPv4 ) return "rawip"; |
65 | if (protocol & PROT_IPv4 ) return "rawip"; |
66 | if (protocol & PROT_ICMPv4) return "icmp"; |
66 | if (protocol & PROT_ICMPv4) return "icmp"; |
67 | if (protocol & PROT_UDPv4 ) return "udp"; |
67 | if (protocol & PROT_UDPv4 ) return "udp"; |
68 | if (protocol & PROT_TCPv4 ) return "tcp"; |
68 | if (protocol & PROT_TCPv4 ) return "tcp"; |
|
|
69 | if (protocol & PROT_DNSv4 ) return "dns"; |
69 | |
70 | |
70 | return "<unknown>"; |
71 | return "<unknown>"; |
71 | } |
72 | } |
72 | |
73 | |
73 | void |
74 | void |
… | |
… | |
92 | if (rsa_key) |
93 | if (rsa_key) |
93 | RSA_free (rsa_key); |
94 | RSA_free (rsa_key); |
94 | |
95 | |
95 | free (nodename); |
96 | free (nodename); |
96 | free (hostname); |
97 | free (hostname); |
|
|
98 | #if ENABLE_DNS |
|
|
99 | free (domain); |
|
|
100 | free (dns_hostname); |
|
|
101 | #endif |
97 | } |
102 | } |
98 | |
103 | |
99 | void configuration::init () |
104 | void configuration::init () |
100 | { |
105 | { |
101 | memset (this, 0, sizeof (*this)); |
106 | memset (this, 0, sizeof (*this)); |
… | |
… | |
108 | #if ENABLE_ICMP |
113 | #if ENABLE_ICMP |
109 | icmp_type = ICMP_ECHOREPLY; |
114 | icmp_type = ICMP_ECHOREPLY; |
110 | #endif |
115 | #endif |
111 | |
116 | |
112 | default_node.udp_port = DEFAULT_UDPPORT; |
117 | default_node.udp_port = DEFAULT_UDPPORT; |
113 | default_node.tcp_port = DEFAULT_UDPPORT; |
118 | default_node.tcp_port = DEFAULT_UDPPORT; // ehrm |
114 | default_node.connectmode = conf_node::C_ALWAYS; |
119 | default_node.connectmode = conf_node::C_ALWAYS; |
115 | default_node.compress = true; |
120 | default_node.compress = true; |
116 | default_node.protocols = PROT_UDPv4; |
121 | default_node.protocols = 0; |
|
|
122 | default_node.max_retry = DEFAULT_MAX_RETRY; |
|
|
123 | |
|
|
124 | #if ENABLE_DNS |
|
|
125 | default_node.dns_port = 0; // default is 0 == client |
|
|
126 | |
|
|
127 | dns_forw_host = strdup ("127.0.0.1"); |
|
|
128 | dns_forw_port = 53; |
|
|
129 | dns_timeout_factor = DEFAULT_DNS_TIMEOUT_FACTOR; |
|
|
130 | dns_send_interval = DEFAULT_DNS_SEND_INTERVAL; |
|
|
131 | dns_overlap_factor = DEFAULT_DNS_OVERLAP_FACTOR; |
|
|
132 | dns_max_outstanding = DEFAULT_DNS_MAX_OUTSTANDING; |
|
|
133 | #endif |
|
|
134 | |
|
|
135 | conf.pidfilename = strdup (LOCALSTATEDIR "/run/gvpe.pid"); |
117 | } |
136 | } |
118 | |
137 | |
119 | void configuration::cleanup() |
138 | void configuration::cleanup() |
120 | { |
139 | { |
121 | if (rsa_key) |
140 | if (rsa_key) |
122 | RSA_free (rsa_key); |
141 | RSA_free (rsa_key); |
123 | |
142 | |
124 | rsa_key = 0; |
143 | rsa_key = 0; |
125 | |
144 | |
|
|
145 | free (pidfilename); pidfilename = 0; |
126 | free (ifname); ifname = 0; |
146 | free (ifname); ifname = 0; |
127 | #if ENABLE_HTTP_PROXY |
147 | #if ENABLE_HTTP_PROXY |
128 | free (proxy_host); proxy_host = 0; |
148 | free (proxy_host); proxy_host = 0; |
129 | free (proxy_auth); proxy_auth = 0; |
149 | free (proxy_auth); proxy_auth = 0; |
|
|
150 | #endif |
|
|
151 | #if ENABLE_DNS |
|
|
152 | free (dns_forw_host); dns_forw_host = 0; |
130 | #endif |
153 | #endif |
131 | } |
154 | } |
132 | |
155 | |
133 | void |
156 | void |
134 | configuration::clear_config () |
157 | configuration::clear_config () |
… | |
… | |
140 | |
163 | |
141 | cleanup (); |
164 | cleanup (); |
142 | init (); |
165 | init (); |
143 | } |
166 | } |
144 | |
167 | |
145 | #define parse_bool(target,name,trueval,falseval) \ |
168 | #define parse_bool(target,name,trueval,falseval) do { \ |
146 | if (!strcmp (val, "yes")) target = trueval; \ |
169 | if (!strcmp (val, "yes")) target = trueval; \ |
147 | else if (!strcmp (val, "no")) target = falseval; \ |
170 | else if (!strcmp (val, "no")) target = falseval; \ |
148 | else if (!strcmp (val, "true")) target = trueval; \ |
171 | else if (!strcmp (val, "true")) target = trueval; \ |
149 | else if (!strcmp (val, "false")) target = falseval; \ |
172 | else if (!strcmp (val, "false")) target = falseval; \ |
150 | else if (!strcmp (val, "on")) target = trueval; \ |
173 | else if (!strcmp (val, "on")) target = trueval; \ |
151 | else if (!strcmp (val, "off")) target = falseval; \ |
174 | else if (!strcmp (val, "off")) target = falseval; \ |
152 | else \ |
175 | else \ |
153 | slog (L_WARN, \ |
176 | slog (L_WARN, \ |
154 | _("illegal value for '%s', only 'yes|true|on' or 'no|false|off' allowed, at '%s' line %d"), \ |
177 | _("illegal value for '%s', only 'yes|true|on' or 'no|false|off' allowed, at '%s' line %d"), \ |
155 | name, var, fname, lineno); |
178 | name, var, fname, lineno); \ |
|
|
179 | } while (0) |
156 | |
180 | |
157 | void configuration::read_config (bool need_keys) |
181 | void configuration::read_config (bool need_keys) |
158 | { |
182 | { |
159 | char *fname; |
183 | char *fname; |
160 | FILE *f; |
184 | FILE *f; |
161 | |
185 | |
162 | clear_config (); |
186 | clear_config (); |
163 | |
187 | |
164 | asprintf (&fname, "%s/vped.conf", confbase); |
188 | asprintf (&fname, "%s/gvpe.conf", confbase); |
165 | f = fopen (fname, "r"); |
189 | f = fopen (fname, "r"); |
166 | |
190 | |
167 | if (f) |
191 | if (f) |
168 | { |
192 | { |
169 | char line[16384]; |
193 | char line[16384]; |
… | |
… | |
199 | val = strtok (NULL, "\t\n\r ="); |
223 | val = strtok (NULL, "\t\n\r ="); |
200 | |
224 | |
201 | if (!val || val[0] == '#') |
225 | if (!val || val[0] == '#') |
202 | { |
226 | { |
203 | slog (L_WARN, |
227 | slog (L_WARN, |
204 | _("no value for variable `%s', at '%s' line %d"), |
228 | _("no value for variable `%s', at '%s' line %d, skipping."), |
205 | var, fname, lineno); |
229 | var, fname, lineno); |
206 | break; |
230 | continue; |
207 | } |
231 | } |
208 | |
232 | |
209 | if (!strcmp (var, "on")) |
233 | if (!strcmp (var, "on")) |
210 | { |
234 | { |
211 | if (!::thisnode |
235 | if (!::thisnode |
… | |
… | |
281 | |
305 | |
282 | if (::thisnode && !strcmp (node->nodename, ::thisnode)) |
306 | if (::thisnode && !strcmp (node->nodename, ::thisnode)) |
283 | thisnode = node; |
307 | thisnode = node; |
284 | } |
308 | } |
285 | else if (!strcmp (var, "private-key")) |
309 | else if (!strcmp (var, "private-key")) |
286 | prikeyfile = strdup (val); |
310 | free (prikeyfile), prikeyfile = strdup (val); |
287 | else if (!strcmp (var, "ifpersist")) |
311 | else if (!strcmp (var, "ifpersist")) |
288 | { |
|
|
289 | parse_bool (ifpersist, "ifpersist", true, false); |
312 | parse_bool (ifpersist, "ifpersist", true, false); |
290 | } |
|
|
291 | else if (!strcmp (var, "ifname")) |
313 | else if (!strcmp (var, "ifname")) |
292 | ifname = strdup (val); |
314 | free (ifname), ifname = strdup (val); |
293 | else if (!strcmp (var, "rekey")) |
315 | else if (!strcmp (var, "rekey")) |
294 | rekey = atoi (val); |
316 | rekey = atoi (val); |
295 | else if (!strcmp (var, "keepalive")) |
317 | else if (!strcmp (var, "keepalive")) |
296 | keepalive = atoi (val); |
318 | keepalive = atoi (val); |
297 | else if (!strcmp (var, "mtu")) |
319 | else if (!strcmp (var, "mtu")) |
298 | mtu = atoi (val); |
320 | mtu = atoi (val); |
299 | else if (!strcmp (var, "if-up")) |
321 | else if (!strcmp (var, "if-up")) |
300 | script_if_up = strdup (val); |
322 | free (script_if_up), script_if_up = strdup (val); |
301 | else if (!strcmp (var, "node-up")) |
323 | else if (!strcmp (var, "node-up")) |
302 | script_node_up = strdup (val); |
324 | free (script_node_up), script_node_up = strdup (val); |
303 | else if (!strcmp (var, "node-down")) |
325 | else if (!strcmp (var, "node-down")) |
304 | script_node_down = strdup (val); |
326 | free (script_node_down), script_node_down = strdup (val); |
|
|
327 | else if (!strcmp (var, "pid-file")) |
|
|
328 | free (pidfilename), pidfilename = strdup (val); |
|
|
329 | else if (!strcmp (var, "dns-forw-host")) |
|
|
330 | { |
|
|
331 | #if ENABLE_DNS |
|
|
332 | free (dns_forw_host), dns_forw_host = strdup (val); |
|
|
333 | #endif |
|
|
334 | } |
|
|
335 | else if (!strcmp (var, "dns-forw-port")) |
|
|
336 | { |
|
|
337 | #if ENABLE_DNS |
|
|
338 | dns_forw_port = atoi (val); |
|
|
339 | #endif |
|
|
340 | } |
|
|
341 | else if (!strcmp (var, "dns-timeout-factor")) |
|
|
342 | { |
|
|
343 | #if ENABLE_DNS |
|
|
344 | dns_timeout_factor = atof (val); |
|
|
345 | #endif |
|
|
346 | } |
|
|
347 | else if (!strcmp (var, "dns-send-interval")) |
|
|
348 | { |
|
|
349 | #if ENABLE_DNS |
|
|
350 | dns_send_interval = atoi (val); |
|
|
351 | #endif |
|
|
352 | } |
|
|
353 | else if (!strcmp (var, "dns-overlap-factor")) |
|
|
354 | { |
|
|
355 | #if ENABLE_DNS |
|
|
356 | dns_overlap_factor = atof (val); |
|
|
357 | #endif |
|
|
358 | } |
|
|
359 | else if (!strcmp (var, "dns-max-outstanding")) |
|
|
360 | { |
|
|
361 | #if ENABLE_DNS |
|
|
362 | dns_max_outstanding = atoi (val); |
|
|
363 | #endif |
|
|
364 | } |
305 | else if (!strcmp (var, "http-proxy-host")) |
365 | else if (!strcmp (var, "http-proxy-host")) |
306 | { |
366 | { |
307 | #if ENABLE_HTTP_PROXY |
367 | #if ENABLE_HTTP_PROXY |
308 | proxy_host = strdup (val); |
368 | free (proxy_host), proxy_host = strdup (val); |
309 | #endif |
369 | #endif |
310 | } |
370 | } |
311 | else if (!strcmp (var, "http-proxy-port")) |
371 | else if (!strcmp (var, "http-proxy-port")) |
312 | { |
372 | { |
313 | #if ENABLE_HTTP_PROXY |
373 | #if ENABLE_HTTP_PROXY |
… | |
… | |
321 | #endif |
381 | #endif |
322 | } |
382 | } |
323 | |
383 | |
324 | /* node-specific, non-defaultable */ |
384 | /* node-specific, non-defaultable */ |
325 | else if (node != &default_node && !strcmp (var, "hostname")) |
385 | else if (node != &default_node && !strcmp (var, "hostname")) |
326 | { |
|
|
327 | free (node->hostname); |
|
|
328 | node->hostname = strdup (val); |
386 | free (node->hostname), node->hostname = strdup (val); |
329 | } |
|
|
330 | |
387 | |
331 | /* node-specific, defaultable */ |
388 | /* node-specific, defaultable */ |
332 | else if (!strcmp (var, "udp-port")) |
389 | else if (!strcmp (var, "udp-port")) |
333 | node->udp_port = atoi (val); |
390 | node->udp_port = atoi (val); |
334 | else if (!strcmp (var, "tcp-port")) |
391 | else if (!strcmp (var, "tcp-port")) |
335 | node->tcp_port = atoi (val); |
392 | node->tcp_port = atoi (val); |
|
|
393 | else if (!strcmp (var, "dns-hostname")) |
|
|
394 | { |
|
|
395 | #if ENABLE_DNS |
|
|
396 | free (node->dns_hostname), node->dns_hostname = strdup (val); |
|
|
397 | #endif |
|
|
398 | } |
|
|
399 | else if (!strcmp (var, "dns-port")) |
|
|
400 | { |
|
|
401 | #if ENABLE_DNS |
|
|
402 | node->dns_port = atoi (val); |
|
|
403 | #endif |
|
|
404 | } |
|
|
405 | else if (!strcmp (var, "dns-domain")) |
|
|
406 | { |
|
|
407 | #if ENABLE_DNS |
|
|
408 | free (node->domain), node->domain = strdup (val); |
|
|
409 | #endif |
|
|
410 | } |
336 | else if (!strcmp (var, "router-priority")) |
411 | else if (!strcmp (var, "router-priority")) |
337 | node->routerprio = atoi (val); |
412 | node->routerprio = atoi (val); |
|
|
413 | else if (!strcmp (var, "max-retry")) |
|
|
414 | node->max_retry = atoi (val); |
338 | else if (!strcmp (var, "connect")) |
415 | else if (!strcmp (var, "connect")) |
339 | { |
416 | { |
340 | if (!strcmp (val, "ondemand")) |
417 | if (!strcmp (val, "ondemand")) |
341 | node->connectmode = conf_node::C_ONDEMAND; |
418 | node->connectmode = conf_node::C_ONDEMAND; |
342 | else if (!strcmp (val, "never")) |
419 | else if (!strcmp (val, "never")) |
… | |
… | |
345 | node->connectmode = conf_node::C_ALWAYS; |
422 | node->connectmode = conf_node::C_ALWAYS; |
346 | else if (!strcmp (val, "disabled")) |
423 | else if (!strcmp (val, "disabled")) |
347 | node->connectmode = conf_node::C_DISABLED; |
424 | node->connectmode = conf_node::C_DISABLED; |
348 | else |
425 | else |
349 | slog (L_WARN, |
426 | slog (L_WARN, |
350 | _("illegal value for 'connectmode', use one of 'ondemand', 'never', 'always' or 'disabled', at '%s' line %d"), |
427 | _("illegal value for 'connectmode', use one of 'ondemand', 'never', 'always' or 'disabled', at '%s' line %d, ignoring."), |
351 | var, fname, lineno); |
428 | var, fname, lineno); |
352 | } |
429 | } |
353 | else if (!strcmp (var, "inherit-tos")) |
430 | else if (!strcmp (var, "inherit-tos")) |
354 | { |
|
|
355 | parse_bool (node->inherit_tos, "inherit-tos", true, false); |
431 | parse_bool (node->inherit_tos, "inherit-tos", true, false); |
356 | } |
|
|
357 | else if (!strcmp (var, "compress")) |
432 | else if (!strcmp (var, "compress")) |
358 | { |
|
|
359 | parse_bool (node->compress, "compress", true, false); |
433 | parse_bool (node->compress, "compress", true, false); |
360 | } |
|
|
361 | // all these bool options really really cost a lot of executable size! |
434 | // all these bool options really really cost a lot of executable size! |
362 | else if (!strcmp (var, "enable-tcp")) |
435 | else if (!strcmp (var, "enable-tcp")) |
363 | { |
436 | { |
364 | #if ENABLE_TCP |
437 | #if ENABLE_TCP |
365 | u8 v; parse_bool (v, "enable-tcp" , PROT_TCPv4, 0); node->protocols = (node->protocols & ~PROT_TCPv4) | v; |
438 | u8 v; parse_bool (v, "enable-tcp" , PROT_TCPv4, 0); node->protocols = (node->protocols & ~PROT_TCPv4) | v; |
… | |
… | |
367 | } |
440 | } |
368 | else if (!strcmp (var, "enable-icmp")) |
441 | else if (!strcmp (var, "enable-icmp")) |
369 | { |
442 | { |
370 | #if ENABLE_ICMP |
443 | #if ENABLE_ICMP |
371 | u8 v; parse_bool (v, "enable-icmp" , PROT_ICMPv4, 0); node->protocols = (node->protocols & ~PROT_ICMPv4) | v; |
444 | u8 v; parse_bool (v, "enable-icmp" , PROT_ICMPv4, 0); node->protocols = (node->protocols & ~PROT_ICMPv4) | v; |
|
|
445 | #endif |
|
|
446 | } |
|
|
447 | else if (!strcmp (var, "enable-dns")) |
|
|
448 | { |
|
|
449 | #if ENABLE_DNS |
|
|
450 | u8 v; parse_bool (v, "enable-dns" , PROT_DNSv4, 0); node->protocols = (node->protocols & ~PROT_DNSv4) | v; |
372 | #endif |
451 | #endif |
373 | } |
452 | } |
374 | else if (!strcmp (var, "enable-udp")) |
453 | else if (!strcmp (var, "enable-udp")) |
375 | { |
454 | { |
376 | u8 v; parse_bool (v, "enable-udp" , PROT_UDPv4, 0); node->protocols = (node->protocols & ~PROT_UDPv4) | v; |
455 | u8 v; parse_bool (v, "enable-udp" , PROT_UDPv4, 0); node->protocols = (node->protocols & ~PROT_UDPv4) | v; |
… | |
… | |
381 | } |
460 | } |
382 | |
461 | |
383 | // unknown or misplaced |
462 | // unknown or misplaced |
384 | else |
463 | else |
385 | slog (L_WARN, |
464 | slog (L_WARN, |
386 | _("unknown or misplaced variable `%s', at '%s' line %d"), |
465 | _("unknown or misplaced variable `%s', at '%s' line %d, skipping."), |
387 | var, fname, lineno); |
466 | var, fname, lineno); |
388 | } |
467 | } |
389 | |
468 | |
390 | fclose (f); |
469 | fclose (f); |
391 | } |
470 | } |
… | |
… | |
474 | printf ("\n"); |
553 | printf ("\n"); |
475 | } |
554 | } |
476 | |
555 | |
477 | configuration::configuration () |
556 | configuration::configuration () |
478 | { |
557 | { |
|
|
558 | asprintf (&confbase, "%s/gvpe", CONFDIR); |
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559 | |
479 | init (); |
560 | init (); |
480 | } |
561 | } |
481 | |
562 | |
482 | configuration::~configuration () |
563 | configuration::~configuration () |
483 | { |
564 | { |