1 | /* |
1 | /* |
2 | conf.c -- configuration code |
2 | conf.c -- configuration code |
3 | Copyright (C) 1998 Robert van der Meulen |
3 | Copyright (C) 2003-2004 Marc Lehmann <pcg@goof.com> |
4 | 1998-2002 Ivo Timmermans <ivo@o2w.nl> |
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5 | 2000-2002 Guus Sliepen <guus@sliepen.eu.org> |
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6 | 2000 Cris van Pelt <tribbel@arise.dhs.org> |
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7 | 2003 Marc Lehmann <pcg@goof.com> |
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8 | |
4 | |
9 | This program is free software; you can redistribute it and/or modify |
5 | This program is free software; you can redistribute it and/or modify |
10 | it under the terms of the GNU General Public License as published by |
6 | it under the terms of the GNU General Public License as published by |
11 | the Free Software Foundation; either version 2 of the License, or |
7 | the Free Software Foundation; either version 2 of the License, or |
12 | (at your option) any later version. |
8 | (at your option) any later version. |
… | |
… | |
37 | |
33 | |
38 | #include <openssl/err.h> |
34 | #include <openssl/err.h> |
39 | #include <openssl/pem.h> |
35 | #include <openssl/pem.h> |
40 | #include <openssl/rsa.h> |
36 | #include <openssl/rsa.h> |
41 | #include <openssl/rand.h> |
37 | #include <openssl/rand.h> |
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38 | #include <openssl/bn.h> |
42 | |
39 | |
43 | #include "gettext.h" |
40 | #include "gettext.h" |
44 | |
41 | |
45 | #include "conf.h" |
42 | #include "conf.h" |
46 | #include "slog.h" |
43 | #include "slog.h" |
47 | #include "util.h" |
44 | #include "util.h" |
48 | |
45 | |
49 | char *confbase; |
46 | char *confbase; |
50 | char *thisnode; |
47 | char *thisnode; |
51 | char *identname; |
48 | char *identname; |
52 | char *pidfilename; |
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53 | |
49 | |
54 | struct configuration conf; |
50 | struct configuration conf; |
55 | |
51 | |
56 | u8 best_protocol (u8 protset) |
52 | u8 best_protocol (u8 protset) |
57 | { |
53 | { |
58 | if (protset & PROT_IPv4 ) return PROT_IPv4; |
54 | if (protset & PROT_IPv4 ) return PROT_IPv4; |
59 | if (protset & PROT_ICMPv4) return PROT_ICMPv4; |
55 | if (protset & PROT_ICMPv4) return PROT_ICMPv4; |
60 | if (protset & PROT_UDPv4 ) return PROT_UDPv4; |
56 | if (protset & PROT_UDPv4 ) return PROT_UDPv4; |
61 | if (protset & PROT_TCPv4 ) return PROT_TCPv4; |
57 | if (protset & PROT_TCPv4 ) return PROT_TCPv4; |
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58 | if (protset & PROT_DNSv4 ) return PROT_DNSv4; |
62 | |
59 | |
63 | return 0; |
60 | return 0; |
64 | } |
61 | } |
65 | |
62 | |
66 | const char *strprotocol (u8 protocol) |
63 | const char *strprotocol (u8 protocol) |
67 | { |
64 | { |
68 | if (protocol & PROT_IPv4 ) return "rawip"; |
65 | if (protocol & PROT_IPv4 ) return "rawip"; |
69 | if (protocol & PROT_ICMPv4) return "icmp"; |
66 | if (protocol & PROT_ICMPv4) return "icmp"; |
70 | if (protocol & PROT_UDPv4 ) return "udp"; |
67 | if (protocol & PROT_UDPv4 ) return "udp"; |
71 | if (protocol & PROT_TCPv4 ) return "tcp"; |
68 | if (protocol & PROT_TCPv4 ) return "tcp"; |
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69 | if (protocol & PROT_DNSv4 ) return "dns"; |
72 | |
70 | |
73 | return "<unknown>"; |
71 | return "<unknown>"; |
74 | } |
72 | } |
75 | |
73 | |
76 | void |
74 | void |
… | |
… | |
99 | free (hostname); |
97 | free (hostname); |
100 | } |
98 | } |
101 | |
99 | |
102 | void configuration::init () |
100 | void configuration::init () |
103 | { |
101 | { |
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102 | asprintf (&confbase, "%s/vpe", CONFDIR); |
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103 | |
104 | memset (this, 0, sizeof (*this)); |
104 | memset (this, 0, sizeof (*this)); |
105 | |
105 | |
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106 | mtu = DEFAULT_MTU; |
106 | rekey = DEFAULT_REKEY; |
107 | rekey = DEFAULT_REKEY; |
107 | keepalive = DEFAULT_KEEPALIVE; |
108 | keepalive = DEFAULT_KEEPALIVE; |
108 | llevel = L_INFO; |
109 | llevel = L_INFO; |
109 | ip_proto = IPPROTO_GRE; |
110 | ip_proto = IPPROTO_GRE; |
110 | #if ENABLE_ICMP |
111 | #if ENABLE_ICMP |
111 | icmp_type = ICMP_ECHOREPLY; |
112 | icmp_type = ICMP_ECHOREPLY; |
112 | #endif |
113 | #endif |
113 | |
114 | |
114 | default_node.udp_port = DEFAULT_UDPPORT; |
115 | default_node.udp_port = DEFAULT_UDPPORT; |
115 | default_node.tcp_port = DEFAULT_UDPPORT; |
116 | default_node.tcp_port = DEFAULT_UDPPORT; // ehrm |
116 | default_node.connectmode = conf_node::C_ALWAYS; |
117 | default_node.connectmode = conf_node::C_ALWAYS; |
117 | default_node.compress = true; |
118 | default_node.compress = true; |
118 | default_node.protocols = PROT_UDPv4; |
119 | default_node.protocols = PROT_UDPv4; |
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120 | |
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121 | conf.pidfilename = strdup (LOCALSTATEDIR "/run/vped.pid"); |
119 | } |
122 | } |
120 | |
123 | |
121 | void configuration::cleanup() |
124 | void configuration::cleanup() |
122 | { |
125 | { |
123 | if (rsa_key) |
126 | if (rsa_key) |
124 | RSA_free (rsa_key); |
127 | RSA_free (rsa_key); |
125 | |
128 | |
126 | rsa_key = 0; |
129 | rsa_key = 0; |
127 | |
130 | |
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131 | free (pidfilename); pidfilename = 0; |
128 | free (ifname); ifname = 0; |
132 | free (ifname); ifname = 0; |
129 | #if ENABLE_HTTP_PROXY |
133 | #if ENABLE_HTTP_PROXY |
130 | free (proxy_host); proxy_host = 0; |
134 | free (proxy_host); proxy_host = 0; |
131 | free (proxy_auth); proxy_auth = 0; |
135 | free (proxy_auth); proxy_auth = 0; |
132 | #endif |
136 | #endif |
133 | } |
137 | } |
134 | |
138 | |
135 | void |
139 | void |
136 | configuration::clear_config () |
140 | configuration::clear_config () |
… | |
… | |
228 | else |
232 | else |
229 | slog (L_WARN, "'%s': %s, at '%s' line %d", val, UNKNOWN_LOGLEVEL, fname, line); |
233 | slog (L_WARN, "'%s': %s, at '%s' line %d", val, UNKNOWN_LOGLEVEL, fname, line); |
230 | } |
234 | } |
231 | else if (!strcmp (var, "ip-proto")) |
235 | else if (!strcmp (var, "ip-proto")) |
232 | ip_proto = atoi (val); |
236 | ip_proto = atoi (val); |
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237 | else if (!strcmp (var, "icmp-type")) |
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238 | { |
233 | #if ENABLE_ICMP |
239 | #if ENABLE_ICMP |
234 | //TODO: error message |
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235 | else if (!strcmp (var, "icmp-type")) |
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236 | icmp_type = atoi (val); |
240 | icmp_type = atoi (val); |
237 | #endif |
241 | #endif |
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242 | } |
238 | |
243 | |
239 | // per config |
244 | // per config |
240 | else if (!strcmp (var, "node")) |
245 | else if (!strcmp (var, "node")) |
241 | { |
246 | { |
242 | default_node.id++; |
247 | default_node.id++; |
… | |
… | |
260 | |
265 | |
261 | if (!PEM_read_RSAPublicKey(f, &node->rsa_key, NULL, NULL)) |
266 | if (!PEM_read_RSAPublicKey(f, &node->rsa_key, NULL, NULL)) |
262 | { |
267 | { |
263 | ERR_load_RSA_strings (); ERR_load_PEM_strings (); |
268 | ERR_load_RSA_strings (); ERR_load_PEM_strings (); |
264 | slog (L_ERR, _("unable to open public rsa key file '%s': %s"), fname, ERR_error_string (ERR_get_error (), 0)); |
269 | slog (L_ERR, _("unable to open public rsa key file '%s': %s"), fname, ERR_error_string (ERR_get_error (), 0)); |
265 | exit (1); |
270 | exit (EXIT_FAILURE); |
266 | } |
271 | } |
267 | |
272 | |
268 | RSA_blinding_on (node->rsa_key, 0); |
273 | require (RSA_blinding_on (node->rsa_key, 0)); |
269 | |
274 | |
270 | fclose (f); |
275 | fclose (f); |
271 | } |
276 | } |
272 | else |
277 | else |
273 | { |
278 | { |
274 | slog (need_keys ? L_ERR : L_NOTICE, _("unable to read public rsa key file '%s': %s"), fname, strerror (errno)); |
279 | slog (need_keys ? L_ERR : L_NOTICE, _("unable to read public rsa key file '%s': %s"), fname, strerror (errno)); |
275 | |
280 | |
276 | if (need_keys) |
281 | if (need_keys) |
277 | exit (1); |
282 | exit (EXIT_FAILURE); |
278 | } |
283 | } |
279 | |
284 | |
280 | free (fname); |
285 | free (fname); |
281 | } |
286 | } |
282 | |
287 | |
283 | if (!::thisnode || !strcmp (node->nodename, ::thisnode)) |
288 | if (::thisnode && !strcmp (node->nodename, ::thisnode)) |
284 | thisnode = node; |
289 | thisnode = node; |
285 | } |
290 | } |
286 | else if (!strcmp (var, "private-key")) |
291 | else if (!strcmp (var, "private-key")) |
287 | prikeyfile = strdup (val); |
292 | free (prikeyfile), prikeyfile = strdup (val); |
288 | else if (!strcmp (var, "ifpersist")) |
293 | else if (!strcmp (var, "ifpersist")) |
289 | { |
294 | { |
290 | parse_bool (ifpersist, "ifpersist", true, false); |
295 | parse_bool (ifpersist, "ifpersist", true, false); |
291 | } |
296 | } |
292 | else if (!strcmp (var, "ifname")) |
297 | else if (!strcmp (var, "ifname")) |
293 | ifname = strdup (val); |
298 | free (ifname), ifname = strdup (val); |
294 | else if (!strcmp (var, "rekey")) |
299 | else if (!strcmp (var, "rekey")) |
295 | rekey = atoi (val); |
300 | rekey = atoi (val); |
296 | else if (!strcmp (var, "keepalive")) |
301 | else if (!strcmp (var, "keepalive")) |
297 | keepalive = atoi (val); |
302 | keepalive = atoi (val); |
298 | else if (!strcmp (var, "mtu")) |
303 | else if (!strcmp (var, "mtu")) |
299 | mtu = atoi (val); |
304 | mtu = atoi (val); |
300 | else if (!strcmp (var, "if-up")) |
305 | else if (!strcmp (var, "if-up")) |
301 | script_if_up = strdup (val); |
306 | free (script_if_up), script_if_up = strdup (val); |
302 | else if (!strcmp (var, "node-up")) |
307 | else if (!strcmp (var, "node-up")) |
303 | script_node_up = strdup (val); |
308 | free (script_node_up), script_node_up = strdup (val); |
304 | else if (!strcmp (var, "node-down")) |
309 | else if (!strcmp (var, "node-down")) |
305 | script_node_down = strdup (val); |
310 | free (script_node_down), script_node_down = strdup (val); |
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311 | else if (!strcmp (var, "pid-file")) |
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312 | free (pidfilename), pidfilename = strdup (val); |
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313 | else if (!strcmp (var, "http-proxy-host")) |
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314 | { |
306 | #if ENABLE_HTTP_PROXY |
315 | #if ENABLE_HTTP_PROXY |
307 | else if (!strcmp (var, "http-proxy-host")) |
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308 | proxy_host = strdup (val); |
316 | free (proxy_host), proxy_host = strdup (val); |
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317 | #endif |
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318 | } |
309 | else if (!strcmp (var, "http-proxy-port")) |
319 | else if (!strcmp (var, "http-proxy-port")) |
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320 | { |
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321 | #if ENABLE_HTTP_PROXY |
310 | proxy_port = atoi (val); |
322 | proxy_port = atoi (val); |
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323 | #endif |
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324 | } |
311 | else if (!strcmp (var, "http-proxy-auth")) |
325 | else if (!strcmp (var, "http-proxy-auth")) |
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326 | { |
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327 | #if ENABLE_HTTP_PROXY |
312 | proxy_auth = (char *)base64_encode ((const u8 *)val, strlen (val)); |
328 | proxy_auth = (char *)base64_encode ((const u8 *)val, strlen (val)); |
313 | #endif |
329 | #endif |
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330 | } |
314 | |
331 | |
315 | /* node-specific, non-defaultable */ |
332 | /* node-specific, non-defaultable */ |
316 | else if (node != &default_node && !strcmp (var, "hostname")) |
333 | else if (node != &default_node && !strcmp (var, "hostname")) |
317 | { |
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318 | free (node->hostname); |
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319 | node->hostname = strdup (val); |
334 | free (node->hostname), node->hostname = strdup (val); |
320 | } |
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321 | |
335 | |
322 | /* node-specific, defaultable */ |
336 | /* node-specific, defaultable */ |
323 | else if (!strcmp (var, "udp-port")) |
337 | else if (!strcmp (var, "udp-port")) |
324 | node->udp_port = atoi (val); |
338 | node->udp_port = atoi (val); |
325 | else if (!strcmp (var, "tcp-port")) |
339 | else if (!strcmp (var, "tcp-port")) |
326 | node->tcp_port = atoi (val); |
340 | node->tcp_port = atoi (val); |
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341 | else if (!strcmp (var, "dns-port")) |
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342 | node->dns_port = atoi (val); |
327 | else if (!strcmp (var, "router-priority")) |
343 | else if (!strcmp (var, "router-priority")) |
328 | node->routerprio = atoi (val); |
344 | node->routerprio = atoi (val); |
329 | else if (!strcmp (var, "connect")) |
345 | else if (!strcmp (var, "connect")) |
330 | { |
346 | { |
331 | if (!strcmp (val, "ondemand")) |
347 | if (!strcmp (val, "ondemand")) |
… | |
… | |
360 | { |
376 | { |
361 | #if ENABLE_ICMP |
377 | #if ENABLE_ICMP |
362 | u8 v; parse_bool (v, "enable-icmp" , PROT_ICMPv4, 0); node->protocols = (node->protocols & ~PROT_ICMPv4) | v; |
378 | u8 v; parse_bool (v, "enable-icmp" , PROT_ICMPv4, 0); node->protocols = (node->protocols & ~PROT_ICMPv4) | v; |
363 | #endif |
379 | #endif |
364 | } |
380 | } |
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381 | else if (!strcmp (var, "enable-dns")) |
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382 | { |
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383 | #if ENABLE_DNS |
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384 | u8 v; parse_bool (v, "enable-dns" , PROT_DNSv4, 0); node->protocols = (node->protocols & ~PROT_DNSv4) | v; |
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385 | #endif |
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386 | } |
365 | else if (!strcmp (var, "enable-udp")) |
387 | else if (!strcmp (var, "enable-udp")) |
366 | { |
388 | { |
367 | u8 v; parse_bool (v, "enable-udp" , PROT_UDPv4, 0); node->protocols = (node->protocols & ~PROT_UDPv4) | v; |
389 | u8 v; parse_bool (v, "enable-udp" , PROT_UDPv4, 0); node->protocols = (node->protocols & ~PROT_UDPv4) | v; |
368 | } |
390 | } |
369 | else if (!strcmp (var, "enable-rawip")) |
391 | else if (!strcmp (var, "enable-rawip")) |
370 | { |
392 | {; |
371 | u8 v; parse_bool (v, "enable-rawip", PROT_IPv4, 0); node->protocols = (node->protocols & ~PROT_IPv4 ) | v; |
393 | u8 v; parse_bool (v, "enable-rawip", PROT_IPv4, 0); node->protocols = (node->protocols & ~PROT_IPv4 ) | v; |
372 | } |
394 | } |
373 | |
395 | |
374 | // unknown or misplaced |
396 | // unknown or misplaced |
375 | else |
397 | else |
… | |
… | |
381 | fclose (f); |
403 | fclose (f); |
382 | } |
404 | } |
383 | else |
405 | else |
384 | { |
406 | { |
385 | slog (L_ERR, _("unable to read config file '%s': %s"), fname, strerror (errno)); |
407 | slog (L_ERR, _("unable to read config file '%s': %s"), fname, strerror (errno)); |
386 | exit (1); |
408 | exit (EXIT_FAILURE); |
387 | } |
409 | } |
388 | |
410 | |
389 | free (fname); |
411 | free (fname); |
390 | |
412 | |
391 | fname = config_filename (prikeyfile, "hostkey"); |
413 | fname = config_filename (prikeyfile, "hostkey"); |
… | |
… | |
397 | |
419 | |
398 | if (!PEM_read_RSAPrivateKey (f, &rsa_key, NULL, NULL)) |
420 | if (!PEM_read_RSAPrivateKey (f, &rsa_key, NULL, NULL)) |
399 | { |
421 | { |
400 | ERR_load_RSA_strings (); ERR_load_PEM_strings (); |
422 | ERR_load_RSA_strings (); ERR_load_PEM_strings (); |
401 | slog (L_ERR, _("unable to read private rsa key file '%s': %s"), fname, ERR_error_string (ERR_get_error (), 0)); |
423 | slog (L_ERR, _("unable to read private rsa key file '%s': %s"), fname, ERR_error_string (ERR_get_error (), 0)); |
402 | exit (1); |
424 | exit (EXIT_FAILURE); |
403 | } |
425 | } |
404 | |
426 | |
405 | RSA_blinding_on (rsa_key, 0); |
427 | require (RSA_blinding_on (rsa_key, 0)); |
406 | |
428 | |
407 | fclose (f); |
429 | fclose (f); |
408 | } |
430 | } |
409 | else |
431 | else |
410 | { |
432 | { |
411 | slog (need_keys ? L_ERR : L_NOTICE, _("unable to open private rsa key file '%s': %s"), fname, strerror (errno)); |
433 | slog (need_keys ? L_ERR : L_NOTICE, _("unable to open private rsa key file '%s': %s"), fname, strerror (errno)); |
412 | |
434 | |
413 | if (need_keys) |
435 | if (need_keys) |
414 | exit (1); |
436 | exit (EXIT_FAILURE); |
415 | } |
437 | } |
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438 | |
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439 | if (need_keys && ::thisnode |
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440 | && rsa_key && thisnode && thisnode->rsa_key) |
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441 | if (BN_cmp (rsa_key->n, thisnode->rsa_key->n) != 0 |
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442 | || BN_cmp (rsa_key->e, thisnode->rsa_key->e) != 0) |
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443 | { |
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444 | slog (L_NOTICE, _("private hostkey and public node key mismatch: is '%s' the correct node?"), ::thisnode); |
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445 | exit (EXIT_FAILURE); |
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446 | } |
416 | |
447 | |
417 | free (fname); |
448 | free (fname); |
418 | } |
449 | } |
419 | |
450 | |
420 | char *configuration::config_filename (const char *name, const char *dflt) |
451 | char *configuration::config_filename (const char *name, const char *dflt) |