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Comparing gvpe/src/conf.C (file contents):
Revision 1.17 by pcg, Tue Oct 14 15:48:15 2003 UTC vs.
Revision 1.51 by pcg, Sat Jul 18 05:59:16 2009 UTC

1/* 1/*
2 conf.c -- configuration code 2 conf.c -- configuration code
3 Copyright (C) 1998 Robert van der Meulen 3 Copyright (C) 2003-2008 Marc Lehmann <gvpe@schmorp.de>
4 1998-2002 Ivo Timmermans <ivo@o2w.nl>
5 2000-2002 Guus Sliepen <guus@sliepen.eu.org>
6 2000 Cris van Pelt <tribbel@arise.dhs.org>
7 2003 Marc Lehmann <pcg@goof.com>
8 4
5 This file is part of GVPE.
6
9 This program is free software; you can redistribute it and/or modify 7 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 8 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 9 Free Software Foundation; either version 3 of the License, or (at your
12 (at your option) any later version. 10 option) any later version.
13 11
14 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, but
15 but WITHOUT ANY WARRANTY; without even the implied warranty of 13 WITHOUT ANY WARRANTY; without even the implied warranty of
16 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General
17 GNU General Public License for more details. 15 Public License for more details.
18 16
19 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 along
20 along with this program; if not, write to the Free Software 18 with this program; if not, see <http://www.gnu.org/licenses/>.
21 Foundation, Inc. 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA 19
20 Additional permission under GNU GPL version 3 section 7
21
22 If you modify this Program, or any covered work, by linking or
23 combining it with the OpenSSL project's OpenSSL library (or a modified
24 version of that library), containing parts covered by the terms of the
25 OpenSSL or SSLeay licenses, the licensors of this Program grant you
26 additional permission to convey the resulting work. Corresponding
27 Source for a non-source form of such a combination shall include the
28 source code for the parts of OpenSSL used as well as that of the
29 covered work.
22*/ 30*/
23 31
24#include "config.h" 32#include "config.h"
25 33
26#include <cstdio> 34#include <cstdio>
… …
37 45
38#include <openssl/err.h> 46#include <openssl/err.h>
39#include <openssl/pem.h> 47#include <openssl/pem.h>
40#include <openssl/rsa.h> 48#include <openssl/rsa.h>
41#include <openssl/rand.h> 49#include <openssl/rand.h>
42 50#include <openssl/bn.h>
43#include "gettext.h"
44 51
45#include "conf.h" 52#include "conf.h"
46#include "slog.h" 53#include "slog.h"
47#include "util.h" 54#include "util.h"
48 55
49char *confbase; 56char *confbase;
50char *thisnode; 57char *thisnode;
51char *identname; 58char *identname;
52char *pidfilename;
53 59
54struct configuration conf; 60struct configuration conf;
55 61
56u8 best_protocol (u8 protset) 62u8 best_protocol (u8 protset)
57{ 63{
58 if (protset & PROT_IPv4 ) return PROT_IPv4; 64 if (protset & PROT_IPv4 ) return PROT_IPv4;
59 if (protset & PROT_ICMPv4) return PROT_ICMPv4; 65 if (protset & PROT_ICMPv4) return PROT_ICMPv4;
60 if (protset & PROT_UDPv4 ) return PROT_UDPv4; 66 if (protset & PROT_UDPv4 ) return PROT_UDPv4;
61 if (protset & PROT_TCPv4 ) return PROT_TCPv4; 67 if (protset & PROT_TCPv4 ) return PROT_TCPv4;
68 if (protset & PROT_DNSv4 ) return PROT_DNSv4;
62 69
63 return 0; 70 return 0;
64} 71}
65 72
66const char *strprotocol (u8 protocol) 73const char *strprotocol (u8 protocol)
67{ 74{
68 if (protocol & PROT_IPv4 ) return "rawip"; 75 if (protocol & PROT_IPv4 ) return "rawip";
69 if (protocol & PROT_ICMPv4) return "icmp"; 76 if (protocol & PROT_ICMPv4) return "icmp";
70 if (protocol & PROT_UDPv4 ) return "udp"; 77 if (protocol & PROT_UDPv4 ) return "udp";
71 if (protocol & PROT_TCPv4 ) return "tcp"; 78 if (protocol & PROT_TCPv4 ) return "tcp";
79 if (protocol & PROT_DNSv4 ) return "dns";
72 80
73 return "<unknown>"; 81 return "<unknown>";
82}
83
84static bool
85match_list (const vector<const char *> &list, const char *str)
86{
87 for (vector<const char *>::const_iterator i = list.end (); i-- > list.begin (); )
88 if ((*i)[0] == '*' && !(*i)[1])
89 return true;
90 else if (!strcmp (*i, str))
91 return true;
92
93 return false;
94}
95
96bool
97conf_node::may_direct (struct conf_node *other)
98{
99 if (match_list (allow_direct, other->nodename))
100 return true;
101
102 if (match_list (deny_direct, other->nodename))
103 return false;
104
105 return true;
74} 106}
75 107
76void 108void
77conf_node::print () 109conf_node::print ()
78{ 110{
79 printf ("%4d fe:fd:80:00:0%1x:%02x %c %-8.8s %-10.10s %s%s%d\n", 111 printf ("%4d fe:fd:80:00:0%1x:%02x %c %-8.8s %-10.10s %s%s%d\n",
80 id, 112 id,
81 id >> 8, id & 0xff, 113 id >> 8, id & 0xff,
82 compress ? 'Y' : 'N', 114 compress ? 'Y' : 'N',
83 connectmode == C_ONDEMAND ? "ondemand" : 115 connectmode == C_ONDEMAND ? "ondemand"
84 connectmode == C_NEVER ? "never" : 116 : connectmode == C_NEVER ? "never"
85 connectmode == C_ALWAYS ? "always" : "", 117 : connectmode == C_ALWAYS ? "always"
118 : connectmode == C_DISABLED ? "disabled"
119 : "",
86 nodename, 120 nodename,
87 hostname ? hostname : "", 121 hostname ? hostname : "",
88 hostname ? ":" : "", 122 hostname ? ":" : "",
89 hostname ? udp_port : 0 123 hostname ? udp_port : 0
90 ); 124 );
91} 125}
92 126
93conf_node::~conf_node () 127conf_node::~conf_node ()
94{ 128{
129#if 0
130 // does not work, because string pointers etc. are shared
131 // is not called, however
95 if (rsa_key) 132 if (rsa_key)
96 RSA_free (rsa_key); 133 RSA_free (rsa_key);
97 134
98 free (nodename); 135 free (nodename);
99 free (hostname); 136 free (hostname);
137 free (if_up_data);
138#if ENABLE_DNS
139 free (domain);
140 free (dns_hostname);
141#endif
142#endif
100} 143}
101 144
102void configuration::init () 145void configuration::init ()
103{ 146{
104 memset (this, 0, sizeof (*this)); 147 memset (this, 0, sizeof (*this));
105 148
149 mtu = DEFAULT_MTU;
150 nfmark = 0;
106 rekey = DEFAULT_REKEY; 151 rekey = DEFAULT_REKEY;
107 keepalive = DEFAULT_KEEPALIVE; 152 keepalive = DEFAULT_KEEPALIVE;
108 llevel = L_INFO; 153 llevel = L_INFO;
109 ip_proto = IPPROTO_GRE; 154 ip_proto = IPPROTO_GRE;
110#if ENABLE_ICMP 155#if ENABLE_ICMP
111 icmp_type = ICMP_ECHOREPLY; 156 icmp_type = ICMP_ECHOREPLY;
112#endif 157#endif
113 158
114 default_node.udp_port = DEFAULT_UDPPORT; 159 default_node.udp_port = DEFAULT_UDPPORT;
115 default_node.tcp_port = DEFAULT_UDPPORT; 160 default_node.tcp_port = DEFAULT_UDPPORT; // ehrm
116 default_node.connectmode = conf_node::C_ALWAYS; 161 default_node.connectmode = conf_node::C_ALWAYS;
117 default_node.compress = true; 162 default_node.compress = true;
118 default_node.protocols = PROT_UDPv4; 163 default_node.protocols = 0;
164 default_node.max_retry = DEFAULT_MAX_RETRY;
165 default_node.max_ttl = DEFAULT_MAX_TTL;
166 default_node.max_queue = DEFAULT_MAX_QUEUE;
167 default_node.if_up_data = strdup ("");
168
169#if ENABLE_DNS
170 default_node.dns_port = 0; // default is 0 == client
171
172 dns_forw_host = strdup ("127.0.0.1");
173 dns_forw_port = 53;
174 dns_timeout_factor = DEFAULT_DNS_TIMEOUT_FACTOR;
175 dns_send_interval = DEFAULT_DNS_SEND_INTERVAL;
176 dns_overlap_factor = DEFAULT_DNS_OVERLAP_FACTOR;
177 dns_max_outstanding = DEFAULT_DNS_MAX_OUTSTANDING;
178#endif
179
180 conf.pidfilename = strdup (LOCALSTATEDIR "/run/gvpe.pid");
119} 181}
120 182
121void configuration::cleanup() 183void configuration::cleanup()
122{ 184{
123 if (rsa_key) 185 if (rsa_key)
124 RSA_free (rsa_key); 186 RSA_free (rsa_key);
125 187
126 rsa_key = 0; 188 rsa_key = 0;
127 189
128 free (ifname); ifname = 0; 190 free (pidfilename); pidfilename = 0;
129#if ENABLE_HTTP_PROXY 191 free (ifname); ifname = 0;
192#if ENABLE_HTTP_PROXY
130 free (proxy_host); proxy_host = 0; 193 free (proxy_host); proxy_host = 0;
131 free (proxy_auth); proxy_auth = 0; 194 free (proxy_auth); proxy_auth = 0;
195#endif
196#if ENABLE_DNS
197 free (dns_forw_host); dns_forw_host = 0;
132#endif 198#endif
199 free (script_if_up); script_if_up = 0;
200 free (script_node_up); script_node_up = 0;
201 free (script_node_change); script_node_change = 0;
202 free (script_node_down); script_node_down = 0;
133} 203}
134 204
135void 205void
136configuration::clear_config () 206configuration::clear ()
137{ 207{
138 for (configuration::node_vector::iterator i = nodes.begin(); i != nodes.end(); ++i) 208 for (configuration::node_vector::iterator i = nodes.begin(); i != nodes.end(); ++i)
139 delete *i; 209 delete *i;
140 210
141 nodes.clear (); 211 nodes.clear ();
142 212
143 cleanup (); 213 cleanup ();
144 init (); 214 init ();
145} 215}
146 216
147#define parse_bool(target,name,trueval,falseval) \ 217#define parse_bool(target,name,trueval,falseval) do { \
148 if (!strcmp (val, "yes")) target = trueval; \ 218 if (!strcmp (val, "yes")) target = trueval; \
149 else if (!strcmp (val, "no")) target = falseval; \ 219 else if (!strcmp (val, "no")) target = falseval; \
150 else if (!strcmp (val, "true")) target = trueval; \ 220 else if (!strcmp (val, "true")) target = trueval; \
151 else if (!strcmp (val, "false")) target = falseval; \ 221 else if (!strcmp (val, "false")) target = falseval; \
152 else if (!strcmp (val, "on")) target = trueval; \ 222 else if (!strcmp (val, "on")) target = trueval; \
153 else if (!strcmp (val, "off")) target = falseval; \ 223 else if (!strcmp (val, "off")) target = falseval; \
154 else \ 224 else \
155 slog (L_WARN, \ 225 return _("illegal boolean value, only 'yes|true|on' or 'no|false|off' allowed. (ignored)"); \
156 _("illegal value for '%s', only 'yes|true|on' or 'no|false|off' allowed, at '%s' line %d"), \ 226} while (0)
157 name, var, fname, lineno);
158 227
159void configuration::read_config (bool need_keys) 228const char *
229configuration_parser::parse_line (char *line)
230{
231 {
232 char *end = line + strlen (line);
233
234 while (*end < ' ' && end >= line)
235 end--;
236
237 *++end = 0;
238 }
239
240 char *tok = line;
241 const char *var = strtok (tok, "\t =");
242 tok = 0;
243
244 if (!var || !var[0])
245 return 0; /* no tokens on this line */
246
247 if (var[0] == '#')
248 return 0; /* comment: ignore */
249
250 char *val = strtok (NULL, "\t\n\r =");
251
252 if (!val || val[0] == '#')
253 return _("no value given for variable. (ignored)");
254
255 if (!strcmp (var, "on"))
256 {
257 if (!::thisnode
258 || (val[0] == '!' && strcmp (val + 1, ::thisnode))
259 || !strcmp (val, ::thisnode))
260 return parse_line (strtok (NULL, "\n\r"));
261 else
262 return 0;
263 }
264
265 // truly global
266 if (!strcmp (var, "loglevel"))
267 {
268 loglevel l = string_to_loglevel (val);
269
270 if (l == L_NONE)
271 return _("unknown loglevel. (skipping)");
272 }
273 else if (!strcmp (var, "ip-proto"))
274 conf.ip_proto = atoi (val);
275 else if (!strcmp (var, "icmp-type"))
276 {
277#if ENABLE_ICMP
278 conf.icmp_type = atoi (val);
279#endif
280 }
281
282 // per config
283 else if (!strcmp (var, "node"))
284 {
285 parse_argv ();
286
287 conf.default_node.id++;
288 node = new conf_node (conf.default_node);
289 conf.nodes.push_back (node);
290 node->nodename = strdup (val);
291
292 {
293 char *fname;
294 FILE *f;
295
296 asprintf (&fname, "%s/pubkey/%s", confbase, node->nodename);
297
298 f = fopen (fname, "r");
299 if (f)
300 {
301 node->rsa_key = RSA_new ();
302
303 if (!PEM_read_RSAPublicKey(f, &node->rsa_key, NULL, NULL))
304 {
305 ERR_load_RSA_strings (); ERR_load_PEM_strings ();
306 slog (L_ERR, _("unable to open public rsa key file '%s': %s"), fname, ERR_error_string (ERR_get_error (), 0));
307 exit (EXIT_FAILURE);
308 }
309
310 require (RSA_blinding_on (node->rsa_key, 0));
311
312 fclose (f);
313 }
314 else
315 {
316 slog (need_keys ? L_ERR : L_NOTICE, _("unable to read public rsa key file '%s': %s"), fname, strerror (errno));
317
318 if (need_keys)
319 exit (EXIT_FAILURE);
320 }
321
322 free (fname);
323 }
324
325 if (::thisnode && !strcmp (node->nodename, ::thisnode))
326 conf.thisnode = node;
327 }
328 else if (!strcmp (var, "private-key"))
329 free (conf.prikeyfile), conf.prikeyfile = strdup (val);
330 else if (!strcmp (var, "ifpersist"))
331 parse_bool (conf.ifpersist, "ifpersist", true, false);
332 else if (!strcmp (var, "ifname"))
333 free (conf.ifname), conf.ifname = strdup (val);
334 else if (!strcmp (var, "rekey"))
335 conf.rekey = atoi (val);
336 else if (!strcmp (var, "keepalive"))
337 conf.keepalive = atoi (val);
338 else if (!strcmp (var, "mtu"))
339 conf.mtu = atoi (val);
340 else if (!strcmp (var, "nfmark"))
341 conf.nfmark = atoi (val);
342 else if (!strcmp (var, "if-up"))
343 free (conf.script_if_up), conf.script_if_up = strdup (val);
344 else if (!strcmp (var, "node-up"))
345 free (conf.script_node_up), conf.script_node_up = strdup (val);
346 else if (!strcmp (var, "node-change"))
347 free (conf.script_node_change), conf.script_node_change = strdup (val);
348 else if (!strcmp (var, "node-down"))
349 free (conf.script_node_down), conf.script_node_down = strdup (val);
350 else if (!strcmp (var, "pid-file"))
351 free (conf.pidfilename), conf.pidfilename = strdup (val);
352 else if (!strcmp (var, "dns-forw-host"))
353 {
354#if ENABLE_DNS
355 free (conf.dns_forw_host), conf.dns_forw_host = strdup (val);
356#endif
357 }
358 else if (!strcmp (var, "dns-forw-port"))
359 {
360#if ENABLE_DNS
361 conf.dns_forw_port = atoi (val);
362#endif
363 }
364 else if (!strcmp (var, "dns-timeout-factor"))
365 {
366#if ENABLE_DNS
367 conf.dns_timeout_factor = atof (val);
368#endif
369 }
370 else if (!strcmp (var, "dns-send-interval"))
371 {
372#if ENABLE_DNS
373 conf.dns_send_interval = atoi (val);
374#endif
375 }
376 else if (!strcmp (var, "dns-overlap-factor"))
377 {
378#if ENABLE_DNS
379 conf.dns_overlap_factor = atof (val);
380#endif
381 }
382 else if (!strcmp (var, "dns-max-outstanding"))
383 {
384#if ENABLE_DNS
385 conf.dns_max_outstanding = atoi (val);
386#endif
387 }
388 else if (!strcmp (var, "http-proxy-host"))
389 {
390#if ENABLE_HTTP_PROXY
391 free (conf.proxy_host), conf.proxy_host = strdup (val);
392#endif
393 }
394 else if (!strcmp (var, "http-proxy-port"))
395 {
396#if ENABLE_HTTP_PROXY
397 conf.proxy_port = atoi (val);
398#endif
399 }
400 else if (!strcmp (var, "http-proxy-auth"))
401 {
402#if ENABLE_HTTP_PROXY
403 conf.proxy_auth = (char *)base64_encode ((const u8 *)val, strlen (val));
404#endif
405 }
406
407 /* node-specific, non-defaultable */
408 else if (node != &conf.default_node && !strcmp (var, "hostname"))
409 free (node->hostname), node->hostname = strdup (val);
410
411 /* node-specific, defaultable */
412 else if (!strcmp (var, "udp-port"))
413 node->udp_port = atoi (val);
414 else if (!strcmp (var, "tcp-port"))
415 node->tcp_port = atoi (val);
416 else if (!strcmp (var, "dns-hostname"))
417 {
418#if ENABLE_DNS
419 free (node->dns_hostname), node->dns_hostname = strdup (val);
420#endif
421 }
422 else if (!strcmp (var, "dns-port"))
423 {
424#if ENABLE_DNS
425 node->dns_port = atoi (val);
426#endif
427 }
428 else if (!strcmp (var, "dns-domain"))
429 {
430#if ENABLE_DNS
431 free (node->domain), node->domain = strdup (val);
432#endif
433 }
434 else if (!strcmp (var, "if-up-data"))
435 free (node->if_up_data), node->if_up_data = strdup (val);
436 else if (!strcmp (var, "router-priority"))
437 node->routerprio = atoi (val);
438 else if (!strcmp (var, "max-retry"))
439 node->max_retry = atoi (val);
440 else if (!strcmp (var, "connect"))
441 {
442 if (!strcmp (val, "ondemand"))
443 node->connectmode = conf_node::C_ONDEMAND;
444 else if (!strcmp (val, "never"))
445 node->connectmode = conf_node::C_NEVER;
446 else if (!strcmp (val, "always"))
447 node->connectmode = conf_node::C_ALWAYS;
448 else if (!strcmp (val, "disabled"))
449 node->connectmode = conf_node::C_DISABLED;
450 else
451 return _("illegal value for 'connectmode', use one of 'ondemand', 'never', 'always' or 'disabled'. (ignored)");
452 }
453 else if (!strcmp (var, "inherit-tos"))
454 parse_bool (node->inherit_tos, "inherit-tos", true, false);
455 else if (!strcmp (var, "compress"))
456 parse_bool (node->compress, "compress", true, false);
457 // all these bool options really really cost a lot of executable size!
458 else if (!strcmp (var, "enable-tcp"))
459 {
460#if ENABLE_TCP
461 u8 v; parse_bool (v, "enable-tcp" , PROT_TCPv4, 0); node->protocols = (node->protocols & ~PROT_TCPv4) | v;
462#endif
463 }
464 else if (!strcmp (var, "enable-icmp"))
465 {
466#if ENABLE_ICMP
467 u8 v; parse_bool (v, "enable-icmp" , PROT_ICMPv4, 0); node->protocols = (node->protocols & ~PROT_ICMPv4) | v;
468#endif
469 }
470 else if (!strcmp (var, "enable-dns"))
471 {
472#if ENABLE_DNS
473 u8 v; parse_bool (v, "enable-dns" , PROT_DNSv4, 0); node->protocols = (node->protocols & ~PROT_DNSv4) | v;
474#endif
475 }
476 else if (!strcmp (var, "enable-udp"))
477 {
478 u8 v; parse_bool (v, "enable-udp" , PROT_UDPv4, 0); node->protocols = (node->protocols & ~PROT_UDPv4) | v;
479 }
480 else if (!strcmp (var, "enable-rawip"))
481 {
482 u8 v; parse_bool (v, "enable-rawip", PROT_IPv4, 0); node->protocols = (node->protocols & ~PROT_IPv4 ) | v;
483 }
484 else if (!strcmp (var, "allow-direct"))
485 node->allow_direct.push_back (strdup (val));
486 else if (!strcmp (var, "deny-direct"))
487 node->deny_direct.push_back (strdup (val));
488 else if (!strcmp (var, "max-ttl"))
489 node->max_ttl = atof (val);
490 else if (!strcmp (var, "max-queue"))
491 node->max_queue = atoi (val);
492
493 // unknown or misplaced
494 else
495 return _("unknown configuration directive. (ignored)");
496
497 return 0;
498}
499
500void conf_node::finalise ()
501{
502 if (max_queue < 1)
503 {
504 slog (L_WARN, _("%s: max-queue value invalid, setting it to 1."), nodename);
505 max_queue = 1;
506 }
507
508 if (routerprio > 1 && (connectmode != C_ALWAYS && connectmode != C_DISABLED))
509 {
510 //slog (L_WARN, _("%s: has non-zero router-priority but either 'never' or 'ondemand' as connectmode, setting it to 'always'."), nodename);
511 connectmode = C_ALWAYS;
512 }
513}
514
515void configuration_parser::parse_argv ()
516{
517 for (int i = 0; i < argc; ++i)
518 {
519 char *v = argv [i];
520
521 if (!*v)
522 continue;
523
524 char *enode = v;
525
526 while (*enode != '.' && *enode > ' ' && *enode != '=' && *enode)
527 enode++;
528
529 if (*enode != '.')
530 enode = 0;
531
532 char *wnode = node == &conf.default_node
533 ? 0
534 : node->nodename;
535
536 if ((!wnode && !enode)
537 || (wnode && enode && !strncmp (wnode, v, enode - v)))
538 {
539 const char *warn = parse_line (enode ? enode + 1 : v);
540
541 if (warn)
542 slog (L_WARN, _("%s, while parsing command line option '%s'."), warn, v);
543
544 *v = 0;
545 }
546 }
547}
548
549configuration_parser::configuration_parser (configuration &conf,
550 bool need_keys,
551 int argc,
552 char **argv)
553: conf (conf),need_keys (need_keys), argc (argc), argv (argv)
160{ 554{
161 char *fname; 555 char *fname;
162 FILE *f; 556 FILE *f;
163 557
164 clear_config (); 558 conf.clear ();
165 559
166 asprintf (&fname, "%s/vped.conf", confbase); 560 asprintf (&fname, "%s/gvpe.conf", confbase);
167 f = fopen (fname, "r"); 561 f = fopen (fname, "r");
168 562
169 if (f) 563 if (f)
170 { 564 {
171 char line[16384]; 565 char line[16384];
172 int lineno = 0; 566 int lineno = 0;
173 char *var, *val; 567 node = &conf.default_node;
174 conf_node *node = &default_node;
175 568
176 while (fgets (line, sizeof (line), f)) 569 while (fgets (line, sizeof (line), f))
177 { 570 {
178 lineno++; 571 lineno++;
179 572
180 { 573 const char *warn = parse_line (line);
181 char *end = line + strlen (line);
182 574
183 while (*end < ' ' && end >= line) 575 if (warn)
184 end--; 576 slog (L_WARN, _("%s, at '%s', line %d."), warn, fname, lineno);
185
186 *++end = 0;
187 }
188
189 char *tok = line;
190
191retry:
192 var = strtok (tok, "\t =");
193 tok = 0;
194
195 if (!var || !var[0])
196 continue; /* no tokens on this line */
197
198 if (var[0] == '#')
199 continue; /* comment: ignore */
200
201 val = strtok (NULL, "\t\n\r =");
202
203 if (!val || val[0] == '#')
204 {
205 slog (L_WARN,
206 _("no value for variable `%s', at '%s' line %d"),
207 var, fname, lineno);
208 break;
209 }
210
211 if (!strcmp (var, "on"))
212 {
213 if (!::thisnode
214 || (val[0] == '!' && strcmp (val + 1, ::thisnode))
215 || !strcmp (val, ::thisnode))
216 goto retry;
217
218 continue;
219 }
220
221 // truly global
222 if (!strcmp (var, "loglevel"))
223 {
224 loglevel l = string_to_loglevel (val);
225
226 if (l != L_NONE)
227 llevel = l;
228 else
229 slog (L_WARN, "'%s': %s, at '%s' line %d", val, UNKNOWN_LOGLEVEL, fname, line);
230 }
231 else if (!strcmp (var, "ip-proto"))
232 ip_proto = atoi (val);
233#if ENABLE_ICMP
234 //TODO: error message
235 else if (!strcmp (var, "icmp-type"))
236 icmp_type = atoi (val);
237#endif
238
239 // per config
240 else if (!strcmp (var, "node"))
241 {
242 default_node.id++;
243
244 node = new conf_node (default_node);
245
246 nodes.push_back (node);
247
248 node->nodename = strdup (val);
249
250 {
251 char *fname;
252 FILE *f;
253
254 asprintf (&fname, "%s/pubkey/%s", confbase, node->nodename);
255
256 f = fopen (fname, "r");
257 if (f)
258 {
259 node->rsa_key = RSA_new ();
260
261 if (!PEM_read_RSAPublicKey(f, &node->rsa_key, NULL, NULL))
262 {
263 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));
265 exit (1);
266 }
267
268 RSA_blinding_on (node->rsa_key, 0);
269
270 fclose (f);
271 }
272 else
273 {
274 slog (need_keys ? L_ERR : L_NOTICE, _("unable to read public rsa key file '%s': %s"), fname, strerror (errno));
275
276 if (need_keys)
277 exit (1);
278 }
279
280 free (fname);
281 }
282
283 if (!::thisnode || !strcmp (node->nodename, ::thisnode))
284 thisnode = node;
285 }
286 else if (!strcmp (var, "private-key"))
287 prikeyfile = strdup (val);
288 else if (!strcmp (var, "ifpersist"))
289 {
290 parse_bool (ifpersist, "ifpersist", true, false);
291 }
292 else if (!strcmp (var, "ifname"))
293 ifname = strdup (val);
294 else if (!strcmp (var, "rekey"))
295 rekey = atoi (val);
296 else if (!strcmp (var, "keepalive"))
297 keepalive = atoi (val);
298 else if (!strcmp (var, "mtu"))
299 mtu = atoi (val);
300 else if (!strcmp (var, "if-up"))
301 script_if_up = strdup (val);
302 else if (!strcmp (var, "node-up"))
303 script_node_up = strdup (val);
304 else if (!strcmp (var, "node-down"))
305 script_node_down = strdup (val);
306#if ENABLE_HTTP_PROXY
307 else if (!strcmp (var, "http-proxy-host"))
308 proxy_host = strdup (val);
309 else if (!strcmp (var, "http-proxy-port"))
310 proxy_port = atoi (val);
311 else if (!strcmp (var, "http-proxy-auth"))
312 proxy_auth = (char *)base64_encode ((const u8 *)val, strlen (val));
313#endif
314
315 /* node-specific, non-defaultable */
316 else if (node != &default_node && !strcmp (var, "hostname"))
317 {
318 free (node->hostname);
319 node->hostname = strdup (val);
320 }
321
322 /* node-specific, defaultable */
323 else if (!strcmp (var, "udp-port"))
324 node->udp_port = atoi (val);
325 else if (!strcmp (var, "tcp-port"))
326 node->tcp_port = atoi (val);
327 else if (!strcmp (var, "router-priority"))
328 node->routerprio = atoi (val);
329 else if (!strcmp (var, "connect"))
330 {
331 if (!strcmp (val, "ondemand"))
332 node->connectmode = conf_node::C_ONDEMAND;
333 else if (!strcmp (val, "never"))
334 node->connectmode = conf_node::C_NEVER;
335 else if (!strcmp (val, "always"))
336 node->connectmode = conf_node::C_ALWAYS;
337 else if (!strcmp (val, "disabled"))
338 node->connectmode = conf_node::C_DISABLED;
339 else
340 slog (L_WARN,
341 _("illegal value for 'connectmode', use one of 'ondemand', 'never', 'always' or 'disabled', at '%s' line %d"),
342 var, fname, lineno);
343 }
344 else if (!strcmp (var, "inherit-tos"))
345 {
346 parse_bool (node->inherit_tos, "inherit-tos", true, false);
347 }
348 else if (!strcmp (var, "compress"))
349 {
350 parse_bool (node->compress, "compress", true, false);
351 }
352 // all these bool options really really cost a lot of executable size!
353 else if (!strcmp (var, "enable-tcp"))
354 {
355#if ENABLE_TCP
356 u8 v; parse_bool (v, "enable-tcp" , PROT_TCPv4, 0); node->protocols = (node->protocols & ~PROT_TCPv4) | v;
357#endif
358 }
359 else if (!strcmp (var, "enable-icmp"))
360 {
361#if ENABLE_ICMP
362 u8 v; parse_bool (v, "enable-icmp" , PROT_ICMPv4, 0); node->protocols = (node->protocols & ~PROT_ICMPv4) | v;
363#endif
364 }
365 else if (!strcmp (var, "enable-udp"))
366 {
367 u8 v; parse_bool (v, "enable-udp" , PROT_UDPv4, 0); node->protocols = (node->protocols & ~PROT_UDPv4) | v;
368 }
369 else if (!strcmp (var, "enable-rawip"))
370 {
371 u8 v; parse_bool (v, "enable-rawip", PROT_IPv4, 0); node->protocols = (node->protocols & ~PROT_IPv4 ) | v;
372 }
373
374 // unknown or misplaced
375 else
376 slog (L_WARN,
377 _("unknown or misplaced variable `%s', at '%s' line %d"),
378 var, fname, lineno);
379 } 577 }
380 578
381 fclose (f); 579 fclose (f);
580
581 parse_argv ();
382 } 582 }
383 else 583 else
384 { 584 {
385 slog (L_ERR, _("unable to read config file '%s': %s"), fname, strerror (errno)); 585 slog (L_ERR, _("unable to read config file '%s': %s"), fname, strerror (errno));
386 exit (1); 586 exit (EXIT_FAILURE);
387 } 587 }
388 588
389 free (fname); 589 free (fname);
390 590
391 fname = config_filename (prikeyfile, "hostkey"); 591 fname = conf.config_filename (conf.prikeyfile, "hostkey");
392 592
393 f = fopen (fname, "r"); 593 f = fopen (fname, "r");
394 if (f) 594 if (f)
395 { 595 {
396 rsa_key = RSA_new (); 596 conf.rsa_key = RSA_new ();
397 597
398 if (!PEM_read_RSAPrivateKey (f, &rsa_key, NULL, NULL)) 598 if (!PEM_read_RSAPrivateKey (f, &conf.rsa_key, NULL, NULL))
399 { 599 {
400 ERR_load_RSA_strings (); ERR_load_PEM_strings (); 600 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)); 601 slog (L_ERR, _("unable to read private rsa key file '%s': %s"), fname, ERR_error_string (ERR_get_error (), 0));
402 exit (1); 602 exit (EXIT_FAILURE);
403 } 603 }
404 604
405 RSA_blinding_on (rsa_key, 0); 605 require (RSA_blinding_on (conf.rsa_key, 0));
406 606
407 fclose (f); 607 fclose (f);
408 } 608 }
409 else 609 else
410 { 610 {
411 slog (need_keys ? L_ERR : L_NOTICE, _("unable to open private rsa key file '%s': %s"), fname, strerror (errno)); 611 slog (need_keys ? L_ERR : L_NOTICE, _("unable to open private rsa key file '%s': %s"), fname, strerror (errno));
412 612
413 if (need_keys) 613 if (need_keys)
414 exit (1); 614 exit (EXIT_FAILURE);
615 }
616
617 if (need_keys && ::thisnode
618 && conf.rsa_key && conf.thisnode && conf.thisnode->rsa_key)
619 if (BN_cmp (conf.rsa_key->n, conf.thisnode->rsa_key->n) != 0
620 || BN_cmp (conf.rsa_key->e, conf.thisnode->rsa_key->e) != 0)
621 {
622 slog (L_NOTICE, _("private hostkey and public node key mismatch: is '%s' the correct node?"), ::thisnode);
623 exit (EXIT_FAILURE);
415 } 624 }
416 625
417 free (fname); 626 free (fname);
627
628 for (configuration::node_vector::iterator i = conf.nodes.begin(); i != conf.nodes.end(); ++i)
629 (*i)->finalise ();
418} 630}
419 631
420char *configuration::config_filename (const char *name, const char *dflt) 632char *configuration::config_filename (const char *name, const char *dflt)
421{ 633{
422 char *fname; 634 char *fname;
… …
456 printf ("\n"); 668 printf ("\n");
457} 669}
458 670
459configuration::configuration () 671configuration::configuration ()
460{ 672{
673 asprintf (&confbase, "%s/gvpe", CONFDIR);
674
461 init (); 675 init ();
462} 676}
463 677
464configuration::~configuration () 678configuration::~configuration ()
465{ 679{

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