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Comparing gvpe/src/conf.C (file contents):
Revision 1.18 by pcg, Thu Oct 16 02:41:21 2003 UTC vs.
Revision 1.53 by root, Tue Feb 8 23:13:48 2011 UTC

1/* 1/*
2 conf.c -- configuration code 2 conf.c -- configuration code
3 Copyright (C) 2003 Marc Lehmann <pcg@goof.com> 3 Copyright (C) 2003-2008 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 it
6 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
7 the Free Software Foundation; either version 2 of the License, or 9 Free Software Foundation; either version 3 of the License, or (at your
8 (at your option) any later version. 10 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, but
11 but WITHOUT ANY WARRANTY; without even the implied warranty of 13 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 GNU General
13 GNU General Public License for more details. 15 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 along
16 along with this program; if not, write to the Free Software 18 with this program; if not, see <http://www.gnu.org/licenses/>.
17 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.
18*/ 30*/
19 31
20#include "config.h" 32#include "config.h"
21 33
22#include <cstdio> 34#include <cstdio>
… …
33 45
34#include <openssl/err.h> 46#include <openssl/err.h>
35#include <openssl/pem.h> 47#include <openssl/pem.h>
36#include <openssl/rsa.h> 48#include <openssl/rsa.h>
37#include <openssl/rand.h> 49#include <openssl/rand.h>
38 50#include <openssl/bn.h>
39#include "gettext.h"
40 51
41#include "conf.h" 52#include "conf.h"
42#include "slog.h" 53#include "slog.h"
43#include "util.h" 54#include "util.h"
44 55
45char *confbase; 56char *confbase;
46char *thisnode; 57char *thisnode;
47char *identname; 58char *identname;
48char *pidfilename;
49 59
50struct configuration conf; 60struct configuration conf;
51 61
62u8
52u8 best_protocol (u8 protset) 63best_protocol (u8 protset)
53{ 64{
54 if (protset & PROT_IPv4 ) return PROT_IPv4; 65 if (protset & PROT_IPv4 ) return PROT_IPv4;
55 if (protset & PROT_ICMPv4) return PROT_ICMPv4; 66 if (protset & PROT_ICMPv4) return PROT_ICMPv4;
56 if (protset & PROT_UDPv4 ) return PROT_UDPv4; 67 if (protset & PROT_UDPv4 ) return PROT_UDPv4;
57 if (protset & PROT_TCPv4 ) return PROT_TCPv4; 68 if (protset & PROT_TCPv4 ) return PROT_TCPv4;
69 if (protset & PROT_DNSv4 ) return PROT_DNSv4;
58 70
59 return 0; 71 return 0;
60} 72}
61 73
74const char *
62const char *strprotocol (u8 protocol) 75strprotocol (u8 protocol)
63{ 76{
64 if (protocol & PROT_IPv4 ) return "rawip"; 77 if (protocol & PROT_IPv4 ) return "rawip";
65 if (protocol & PROT_ICMPv4) return "icmp"; 78 if (protocol & PROT_ICMPv4) return "icmp";
66 if (protocol & PROT_UDPv4 ) return "udp"; 79 if (protocol & PROT_UDPv4 ) return "udp";
67 if (protocol & PROT_TCPv4 ) return "tcp"; 80 if (protocol & PROT_TCPv4 ) return "tcp";
81 if (protocol & PROT_DNSv4 ) return "dns";
68 82
69 return "<unknown>"; 83 return "<unknown>";
84}
85
86static bool
87match_list (const vector<const char *> &list, const char *str)
88{
89 for (vector<const char *>::const_iterator i = list.end (); i-- > list.begin (); )
90 if ((*i)[0] == '*' && !(*i)[1])
91 return true;
92 else if (!strcmp (*i, str))
93 return true;
94
95 return false;
96}
97
98bool
99conf_node::may_direct (struct conf_node *other)
100{
101 if (match_list (allow_direct, other->nodename))
102 return true;
103
104 if (match_list (deny_direct, other->nodename))
105 return false;
106
107 return true;
70} 108}
71 109
72void 110void
73conf_node::print () 111conf_node::print ()
74{ 112{
75 printf ("%4d fe:fd:80:00:0%1x:%02x %c %-8.8s %-10.10s %s%s%d\n", 113 printf ("%4d fe:fd:80:00:0%1x:%02x %c %-8.8s %-10.10s %s%s%d\n",
76 id, 114 id,
77 id >> 8, id & 0xff, 115 id >> 8, id & 0xff,
78 compress ? 'Y' : 'N', 116 compress ? 'Y' : 'N',
79 connectmode == C_ONDEMAND ? "ondemand" : 117 connectmode == C_ONDEMAND ? "ondemand"
80 connectmode == C_NEVER ? "never" : 118 : connectmode == C_NEVER ? "never"
81 connectmode == C_ALWAYS ? "always" : "", 119 : connectmode == C_ALWAYS ? "always"
120 : connectmode == C_DISABLED ? "disabled"
121 : "",
82 nodename, 122 nodename,
83 hostname ? hostname : "", 123 hostname ? hostname : "",
84 hostname ? ":" : "", 124 hostname ? ":" : "",
85 hostname ? udp_port : 0 125 hostname ? udp_port : 0
86 ); 126 );
87} 127}
88 128
89conf_node::~conf_node () 129conf_node::~conf_node ()
90{ 130{
131#if 0
132 // does not work, because string pointers etc. are shared
133 // is not called, however
91 if (rsa_key) 134 if (rsa_key)
92 RSA_free (rsa_key); 135 RSA_free (rsa_key);
93 136
94 free (nodename); 137 free (nodename);
95 free (hostname); 138 free (hostname);
139 free (if_up_data);
140#if ENABLE_DNS
141 free (domain);
142 free (dns_hostname);
143#endif
144#endif
96} 145}
97 146
147void
98void configuration::init () 148configuration::init ()
99{ 149{
100 memset (this, 0, sizeof (*this)); 150 memset (this, 0, sizeof (*this));
101 151
152 mtu = DEFAULT_MTU;
153 nfmark = 0;
102 rekey = DEFAULT_REKEY; 154 rekey = DEFAULT_REKEY;
103 keepalive = DEFAULT_KEEPALIVE; 155 keepalive = DEFAULT_KEEPALIVE;
104 llevel = L_INFO; 156 llevel = L_INFO;
105 ip_proto = IPPROTO_GRE; 157 ip_proto = IPPROTO_GRE;
106#if ENABLE_ICMP 158#if ENABLE_ICMP
107 icmp_type = ICMP_ECHOREPLY; 159 icmp_type = ICMP_ECHOREPLY;
108#endif 160#endif
109 161
110 default_node.udp_port = DEFAULT_UDPPORT; 162 default_node.udp_port = DEFAULT_UDPPORT;
111 default_node.tcp_port = DEFAULT_UDPPORT; 163 default_node.tcp_port = DEFAULT_UDPPORT; // ehrm
112 default_node.connectmode = conf_node::C_ALWAYS; 164 default_node.connectmode = conf_node::C_ALWAYS;
113 default_node.compress = true; 165 default_node.compress = true;
114 default_node.protocols = PROT_UDPv4; 166 default_node.protocols = 0;
115} 167 default_node.max_retry = DEFAULT_MAX_RETRY;
168 default_node.max_ttl = DEFAULT_MAX_TTL;
169 default_node.max_queue = DEFAULT_MAX_QUEUE;
170 default_node.if_up_data = strdup ("");
116 171
172#if ENABLE_DNS
173 default_node.dns_port = 0; // default is 0 == client
174
175 dns_forw_host = strdup ("127.0.0.1");
176 dns_forw_port = 53;
177 dns_timeout_factor = DEFAULT_DNS_TIMEOUT_FACTOR;
178 dns_send_interval = DEFAULT_DNS_SEND_INTERVAL;
179 dns_overlap_factor = DEFAULT_DNS_OVERLAP_FACTOR;
180 dns_max_outstanding = DEFAULT_DNS_MAX_OUTSTANDING;
181#endif
182
183 conf.pidfilename = strdup (LOCALSTATEDIR "/run/gvpe.pid");
184}
185
186void
117void configuration::cleanup() 187configuration::cleanup ()
118{ 188{
119 if (rsa_key) 189 if (rsa_key)
120 RSA_free (rsa_key); 190 RSA_free (rsa_key);
121 191
122 rsa_key = 0; 192 rsa_key = 0;
123 193
124 free (ifname); ifname = 0; 194 free (pidfilename); pidfilename = 0;
195 free (ifname); ifname = 0;
125#if ENABLE_HTTP_PROXY 196#if ENABLE_HTTP_PROXY
126 free (proxy_host); proxy_host = 0; 197 free (proxy_host); proxy_host = 0;
127 free (proxy_auth); proxy_auth = 0; 198 free (proxy_auth); proxy_auth = 0;
128#endif 199#endif
200#if ENABLE_DNS
201 free (dns_forw_host); dns_forw_host = 0;
202#endif
203 free (script_if_up); script_if_up = 0;
204 free (script_node_up); script_node_up = 0;
205 free (script_node_change); script_node_change = 0;
206 free (script_node_down); script_node_down = 0;
129} 207}
130 208
131void 209void
132configuration::clear_config () 210configuration::clear ()
133{ 211{
134 for (configuration::node_vector::iterator i = nodes.begin(); i != nodes.end(); ++i) 212 for (configuration::node_vector::iterator i = nodes.begin(); i != nodes.end(); ++i)
135 delete *i; 213 delete *i;
136 214
137 nodes.clear (); 215 nodes.clear ();
138 216
139 cleanup (); 217 cleanup ();
140 init (); 218 init ();
141} 219}
142 220
143#define parse_bool(target,name,trueval,falseval) \ 221#define parse_bool(target,name,trueval,falseval) do { \
144 if (!strcmp (val, "yes")) target = trueval; \ 222 if (!strcmp (val, "yes")) target = trueval; \
145 else if (!strcmp (val, "no")) target = falseval; \ 223 else if (!strcmp (val, "no")) target = falseval; \
146 else if (!strcmp (val, "true")) target = trueval; \ 224 else if (!strcmp (val, "true")) target = trueval; \
147 else if (!strcmp (val, "false")) target = falseval; \ 225 else if (!strcmp (val, "false")) target = falseval; \
148 else if (!strcmp (val, "on")) target = trueval; \ 226 else if (!strcmp (val, "on")) target = trueval; \
149 else if (!strcmp (val, "off")) target = falseval; \ 227 else if (!strcmp (val, "off")) target = falseval; \
150 else \ 228 else \
151 slog (L_WARN, \ 229 return _("illegal boolean value, only 'yes|true|on' or 'no|false|off' allowed. (ignored)"); \
152 _("illegal value for '%s', only 'yes|true|on' or 'no|false|off' allowed, at '%s' line %d"), \ 230} while (0)
153 name, var, fname, lineno);
154 231
155void configuration::read_config (bool need_keys) 232const char *
233configuration_parser::parse_line (char *line)
234{
235 {
236 char *end = line + strlen (line);
237
238 while (*end < ' ' && end >= line)
239 end--;
240
241 *++end = 0;
242 }
243
244 char *tok = line;
245 const char *var = strtok (tok, "\t =");
246 tok = 0;
247
248 if (!var || !var[0])
249 return 0; /* no tokens on this line */
250
251 if (var[0] == '#')
252 return 0; /* comment: ignore */
253
254 char *val = strtok (NULL, "\t\n\r =");
255
256 if (!val || val[0] == '#')
257 return _("no value given for variable. (ignored)");
258
259 if (!strcmp (var, "on"))
260 {
261 if (!::thisnode
262 || (val[0] == '!' && strcmp (val + 1, ::thisnode))
263 || !strcmp (val, ::thisnode))
264 return parse_line (strtok (NULL, "\n\r"));
265 else
266 return 0;
267 }
268
269 // truly global
270 if (!strcmp (var, "loglevel"))
271 {
272 loglevel l = string_to_loglevel (val);
273
274 if (l == L_NONE)
275 return _("unknown loglevel. (skipping)");
276 }
277 else if (!strcmp (var, "ip-proto"))
278 conf.ip_proto = atoi (val);
279 else if (!strcmp (var, "icmp-type"))
280 {
281#if ENABLE_ICMP
282 conf.icmp_type = atoi (val);
283#endif
284 }
285
286 // per config
287 else if (!strcmp (var, "node"))
288 {
289 parse_argv ();
290
291 conf.default_node.id++;
292 node = new conf_node (conf.default_node);
293 conf.nodes.push_back (node);
294 node->nodename = strdup (val);
295
296 {
297 char *fname;
298 FILE *f;
299
300 asprintf (&fname, "%s/pubkey/%s", confbase, node->nodename);
301
302 f = fopen (fname, "r");
303 if (f)
304 {
305 node->rsa_key = RSA_new ();
306
307 if (!PEM_read_RSAPublicKey(f, &node->rsa_key, NULL, NULL))
308 {
309 ERR_load_RSA_strings (); ERR_load_PEM_strings ();
310 slog (L_ERR, _("unable to open public rsa key file '%s': %s"), fname, ERR_error_string (ERR_get_error (), 0));
311 exit (EXIT_FAILURE);
312 }
313
314 require (RSA_blinding_on (node->rsa_key, 0));
315
316 fclose (f);
317 }
318 else
319 {
320 slog (need_keys ? L_ERR : L_NOTICE, _("unable to read public rsa key file '%s': %s"), fname, strerror (errno));
321
322 if (need_keys)
323 exit (EXIT_FAILURE);
324 }
325
326 free (fname);
327 }
328
329 if (::thisnode && !strcmp (node->nodename, ::thisnode))
330 conf.thisnode = node;
331 }
332 else if (!strcmp (var, "private-key"))
333 free (conf.prikeyfile), conf.prikeyfile = strdup (val);
334 else if (!strcmp (var, "ifpersist"))
335 parse_bool (conf.ifpersist, "ifpersist", true, false);
336 else if (!strcmp (var, "ifname"))
337 free (conf.ifname), conf.ifname = strdup (val);
338 else if (!strcmp (var, "rekey"))
339 conf.rekey = atoi (val);
340 else if (!strcmp (var, "keepalive"))
341 conf.keepalive = atoi (val);
342 else if (!strcmp (var, "mtu"))
343 conf.mtu = atoi (val);
344 else if (!strcmp (var, "nfmark"))
345 conf.nfmark = atoi (val);
346 else if (!strcmp (var, "if-up"))
347 free (conf.script_if_up), conf.script_if_up = strdup (val);
348 else if (!strcmp (var, "node-up"))
349 free (conf.script_node_up), conf.script_node_up = strdup (val);
350 else if (!strcmp (var, "node-change"))
351 free (conf.script_node_change), conf.script_node_change = strdup (val);
352 else if (!strcmp (var, "node-down"))
353 free (conf.script_node_down), conf.script_node_down = strdup (val);
354 else if (!strcmp (var, "pid-file"))
355 free (conf.pidfilename), conf.pidfilename = strdup (val);
356 else if (!strcmp (var, "dns-forw-host"))
357 {
358#if ENABLE_DNS
359 free (conf.dns_forw_host), conf.dns_forw_host = strdup (val);
360#endif
361 }
362 else if (!strcmp (var, "dns-forw-port"))
363 {
364#if ENABLE_DNS
365 conf.dns_forw_port = atoi (val);
366#endif
367 }
368 else if (!strcmp (var, "dns-timeout-factor"))
369 {
370#if ENABLE_DNS
371 conf.dns_timeout_factor = atof (val);
372#endif
373 }
374 else if (!strcmp (var, "dns-send-interval"))
375 {
376#if ENABLE_DNS
377 conf.dns_send_interval = atoi (val);
378#endif
379 }
380 else if (!strcmp (var, "dns-overlap-factor"))
381 {
382#if ENABLE_DNS
383 conf.dns_overlap_factor = atof (val);
384#endif
385 }
386 else if (!strcmp (var, "dns-max-outstanding"))
387 {
388#if ENABLE_DNS
389 conf.dns_max_outstanding = atoi (val);
390#endif
391 }
392 else if (!strcmp (var, "http-proxy-host"))
393 {
394#if ENABLE_HTTP_PROXY
395 free (conf.proxy_host), conf.proxy_host = strdup (val);
396#endif
397 }
398 else if (!strcmp (var, "http-proxy-port"))
399 {
400#if ENABLE_HTTP_PROXY
401 conf.proxy_port = atoi (val);
402#endif
403 }
404 else if (!strcmp (var, "http-proxy-auth"))
405 {
406#if ENABLE_HTTP_PROXY
407 conf.proxy_auth = (char *)base64_encode ((const u8 *)val, strlen (val));
408#endif
409 }
410
411 /* node-specific, non-defaultable */
412 else if (node != &conf.default_node && !strcmp (var, "hostname"))
413 free (node->hostname), node->hostname = strdup (val);
414
415 /* node-specific, defaultable */
416 else if (!strcmp (var, "udp-port"))
417 node->udp_port = atoi (val);
418 else if (!strcmp (var, "tcp-port"))
419 node->tcp_port = atoi (val);
420 else if (!strcmp (var, "dns-hostname"))
421 {
422#if ENABLE_DNS
423 free (node->dns_hostname), node->dns_hostname = strdup (val);
424#endif
425 }
426 else if (!strcmp (var, "dns-port"))
427 {
428#if ENABLE_DNS
429 node->dns_port = atoi (val);
430#endif
431 }
432 else if (!strcmp (var, "dns-domain"))
433 {
434#if ENABLE_DNS
435 free (node->domain), node->domain = strdup (val);
436#endif
437 }
438 else if (!strcmp (var, "if-up-data"))
439 free (node->if_up_data), node->if_up_data = strdup (val);
440 else if (!strcmp (var, "router-priority"))
441 node->routerprio = atoi (val);
442 else if (!strcmp (var, "max-retry"))
443 node->max_retry = atoi (val);
444 else if (!strcmp (var, "connect"))
445 {
446 if (!strcmp (val, "ondemand"))
447 node->connectmode = conf_node::C_ONDEMAND;
448 else if (!strcmp (val, "never"))
449 node->connectmode = conf_node::C_NEVER;
450 else if (!strcmp (val, "always"))
451 node->connectmode = conf_node::C_ALWAYS;
452 else if (!strcmp (val, "disabled"))
453 node->connectmode = conf_node::C_DISABLED;
454 else
455 return _("illegal value for 'connectmode', use one of 'ondemand', 'never', 'always' or 'disabled'. (ignored)");
456 }
457 else if (!strcmp (var, "inherit-tos"))
458 parse_bool (node->inherit_tos, "inherit-tos", true, false);
459 else if (!strcmp (var, "compress"))
460 parse_bool (node->compress, "compress", true, false);
461 // all these bool options really really cost a lot of executable size!
462 else if (!strcmp (var, "enable-tcp"))
463 {
464#if ENABLE_TCP
465 u8 v; parse_bool (v, "enable-tcp" , PROT_TCPv4, 0); node->protocols = (node->protocols & ~PROT_TCPv4) | v;
466#endif
467 }
468 else if (!strcmp (var, "enable-icmp"))
469 {
470#if ENABLE_ICMP
471 u8 v; parse_bool (v, "enable-icmp" , PROT_ICMPv4, 0); node->protocols = (node->protocols & ~PROT_ICMPv4) | v;
472#endif
473 }
474 else if (!strcmp (var, "enable-dns"))
475 {
476#if ENABLE_DNS
477 u8 v; parse_bool (v, "enable-dns" , PROT_DNSv4, 0); node->protocols = (node->protocols & ~PROT_DNSv4) | v;
478#endif
479 }
480 else if (!strcmp (var, "enable-udp"))
481 {
482 u8 v; parse_bool (v, "enable-udp" , PROT_UDPv4, 0); node->protocols = (node->protocols & ~PROT_UDPv4) | v;
483 }
484 else if (!strcmp (var, "enable-rawip"))
485 {
486 u8 v; parse_bool (v, "enable-rawip", PROT_IPv4, 0); node->protocols = (node->protocols & ~PROT_IPv4 ) | v;
487 }
488 else if (!strcmp (var, "allow-direct"))
489 node->allow_direct.push_back (strdup (val));
490 else if (!strcmp (var, "deny-direct"))
491 node->deny_direct.push_back (strdup (val));
492 else if (!strcmp (var, "max-ttl"))
493 node->max_ttl = atof (val);
494 else if (!strcmp (var, "max-queue"))
495 node->max_queue = atoi (val);
496
497 // unknown or misplaced
498 else
499 return _("unknown configuration directive. (ignored)");
500
501 return 0;
502}
503
504void
505conf_node::finalise ()
506{
507 if (max_queue < 1)
508 {
509 slog (L_WARN, _("%s: max-queue value invalid, setting it to 1."), nodename);
510 max_queue = 1;
511 }
512
513 if (routerprio > 1 && (connectmode != C_ALWAYS && connectmode != C_DISABLED))
514 {
515 //slog (L_WARN, _("%s: has non-zero router-priority but either 'never' or 'ondemand' as connectmode, setting it to 'always'."), nodename);
516 connectmode = C_ALWAYS;
517 }
518}
519
520void
521configuration_parser::parse_argv ()
522{
523 for (int i = 0; i < argc; ++i)
524 {
525 char *v = argv [i];
526
527 if (!*v)
528 continue;
529
530 char *enode = v;
531
532 while (*enode != '.' && *enode > ' ' && *enode != '=' && *enode)
533 enode++;
534
535 if (*enode != '.')
536 enode = 0;
537
538 char *wnode = node == &conf.default_node
539 ? 0
540 : node->nodename;
541
542 if ((!wnode && !enode)
543 || (wnode && enode && !strncmp (wnode, v, enode - v)))
544 {
545 const char *warn = parse_line (enode ? enode + 1 : v);
546
547 if (warn)
548 slog (L_WARN, _("%s, while parsing command line option '%s'."), warn, v);
549
550 *v = 0;
551 }
552 }
553}
554
555configuration_parser::configuration_parser (configuration &conf,
556 bool need_keys,
557 int argc,
558 char **argv)
559: conf (conf),need_keys (need_keys), argc (argc), argv (argv)
156{ 560{
157 char *fname; 561 char *fname;
158 FILE *f; 562 FILE *f;
159 563
160 clear_config (); 564 conf.clear ();
161 565
162 asprintf (&fname, "%s/vped.conf", confbase); 566 asprintf (&fname, "%s/gvpe.conf", confbase);
163 f = fopen (fname, "r"); 567 f = fopen (fname, "r");
164 568
165 if (f) 569 if (f)
166 { 570 {
167 char line[16384]; 571 char line[16384];
168 int lineno = 0; 572 int lineno = 0;
169 char *var, *val; 573 node = &conf.default_node;
170 conf_node *node = &default_node;
171 574
172 while (fgets (line, sizeof (line), f)) 575 while (fgets (line, sizeof (line), f))
173 { 576 {
174 lineno++; 577 lineno++;
175 578
176 { 579 const char *warn = parse_line (line);
177 char *end = line + strlen (line);
178 580
179 while (*end < ' ' && end >= line) 581 if (warn)
180 end--; 582 slog (L_WARN, _("%s, at '%s', line %d."), warn, fname, lineno);
181
182 *++end = 0;
183 }
184
185 char *tok = line;
186
187retry:
188 var = strtok (tok, "\t =");
189 tok = 0;
190
191 if (!var || !var[0])
192 continue; /* no tokens on this line */
193
194 if (var[0] == '#')
195 continue; /* comment: ignore */
196
197 val = strtok (NULL, "\t\n\r =");
198
199 if (!val || val[0] == '#')
200 {
201 slog (L_WARN,
202 _("no value for variable `%s', at '%s' line %d"),
203 var, fname, lineno);
204 break;
205 }
206
207 if (!strcmp (var, "on"))
208 {
209 if (!::thisnode
210 || (val[0] == '!' && strcmp (val + 1, ::thisnode))
211 || !strcmp (val, ::thisnode))
212 goto retry;
213
214 continue;
215 }
216
217 // truly global
218 if (!strcmp (var, "loglevel"))
219 {
220 loglevel l = string_to_loglevel (val);
221
222 if (l != L_NONE)
223 llevel = l;
224 else
225 slog (L_WARN, "'%s': %s, at '%s' line %d", val, UNKNOWN_LOGLEVEL, fname, line);
226 }
227 else if (!strcmp (var, "ip-proto"))
228 ip_proto = atoi (val);
229#if ENABLE_ICMP
230 //TODO: error message
231 else if (!strcmp (var, "icmp-type"))
232 icmp_type = atoi (val);
233#endif
234
235 // per config
236 else if (!strcmp (var, "node"))
237 {
238 default_node.id++;
239
240 node = new conf_node (default_node);
241
242 nodes.push_back (node);
243
244 node->nodename = strdup (val);
245
246 {
247 char *fname;
248 FILE *f;
249
250 asprintf (&fname, "%s/pubkey/%s", confbase, node->nodename);
251
252 f = fopen (fname, "r");
253 if (f)
254 {
255 node->rsa_key = RSA_new ();
256
257 if (!PEM_read_RSAPublicKey(f, &node->rsa_key, NULL, NULL))
258 {
259 ERR_load_RSA_strings (); ERR_load_PEM_strings ();
260 slog (L_ERR, _("unable to open public rsa key file '%s': %s"), fname, ERR_error_string (ERR_get_error (), 0));
261 exit (1);
262 }
263
264 RSA_blinding_on (node->rsa_key, 0);
265
266 fclose (f);
267 }
268 else
269 {
270 slog (need_keys ? L_ERR : L_NOTICE, _("unable to read public rsa key file '%s': %s"), fname, strerror (errno));
271
272 if (need_keys)
273 exit (1);
274 }
275
276 free (fname);
277 }
278
279 if (!::thisnode || !strcmp (node->nodename, ::thisnode))
280 thisnode = node;
281 }
282 else if (!strcmp (var, "private-key"))
283 prikeyfile = strdup (val);
284 else if (!strcmp (var, "ifpersist"))
285 {
286 parse_bool (ifpersist, "ifpersist", true, false);
287 }
288 else if (!strcmp (var, "ifname"))
289 ifname = strdup (val);
290 else if (!strcmp (var, "rekey"))
291 rekey = atoi (val);
292 else if (!strcmp (var, "keepalive"))
293 keepalive = atoi (val);
294 else if (!strcmp (var, "mtu"))
295 mtu = atoi (val);
296 else if (!strcmp (var, "if-up"))
297 script_if_up = strdup (val);
298 else if (!strcmp (var, "node-up"))
299 script_node_up = strdup (val);
300 else if (!strcmp (var, "node-down"))
301 script_node_down = strdup (val);
302#if ENABLE_HTTP_PROXY
303 else if (!strcmp (var, "http-proxy-host"))
304 proxy_host = strdup (val);
305 else if (!strcmp (var, "http-proxy-port"))
306 proxy_port = atoi (val);
307 else if (!strcmp (var, "http-proxy-auth"))
308 proxy_auth = (char *)base64_encode ((const u8 *)val, strlen (val));
309#endif
310
311 /* node-specific, non-defaultable */
312 else if (node != &default_node && !strcmp (var, "hostname"))
313 {
314 free (node->hostname);
315 node->hostname = strdup (val);
316 }
317
318 /* node-specific, defaultable */
319 else if (!strcmp (var, "udp-port"))
320 node->udp_port = atoi (val);
321 else if (!strcmp (var, "tcp-port"))
322 node->tcp_port = atoi (val);
323 else if (!strcmp (var, "router-priority"))
324 node->routerprio = atoi (val);
325 else if (!strcmp (var, "connect"))
326 {
327 if (!strcmp (val, "ondemand"))
328 node->connectmode = conf_node::C_ONDEMAND;
329 else if (!strcmp (val, "never"))
330 node->connectmode = conf_node::C_NEVER;
331 else if (!strcmp (val, "always"))
332 node->connectmode = conf_node::C_ALWAYS;
333 else if (!strcmp (val, "disabled"))
334 node->connectmode = conf_node::C_DISABLED;
335 else
336 slog (L_WARN,
337 _("illegal value for 'connectmode', use one of 'ondemand', 'never', 'always' or 'disabled', at '%s' line %d"),
338 var, fname, lineno);
339 }
340 else if (!strcmp (var, "inherit-tos"))
341 {
342 parse_bool (node->inherit_tos, "inherit-tos", true, false);
343 }
344 else if (!strcmp (var, "compress"))
345 {
346 parse_bool (node->compress, "compress", true, false);
347 }
348 // all these bool options really really cost a lot of executable size!
349 else if (!strcmp (var, "enable-tcp"))
350 {
351#if ENABLE_TCP
352 u8 v; parse_bool (v, "enable-tcp" , PROT_TCPv4, 0); node->protocols = (node->protocols & ~PROT_TCPv4) | v;
353#endif
354 }
355 else if (!strcmp (var, "enable-icmp"))
356 {
357#if ENABLE_ICMP
358 u8 v; parse_bool (v, "enable-icmp" , PROT_ICMPv4, 0); node->protocols = (node->protocols & ~PROT_ICMPv4) | v;
359#endif
360 }
361 else if (!strcmp (var, "enable-udp"))
362 {
363 u8 v; parse_bool (v, "enable-udp" , PROT_UDPv4, 0); node->protocols = (node->protocols & ~PROT_UDPv4) | v;
364 }
365 else if (!strcmp (var, "enable-rawip"))
366 {
367 u8 v; parse_bool (v, "enable-rawip", PROT_IPv4, 0); node->protocols = (node->protocols & ~PROT_IPv4 ) | v;
368 }
369
370 // unknown or misplaced
371 else
372 slog (L_WARN,
373 _("unknown or misplaced variable `%s', at '%s' line %d"),
374 var, fname, lineno);
375 } 583 }
376 584
377 fclose (f); 585 fclose (f);
586
587 parse_argv ();
378 } 588 }
379 else 589 else
380 { 590 {
381 slog (L_ERR, _("unable to read config file '%s': %s"), fname, strerror (errno)); 591 slog (L_ERR, _("unable to read config file '%s': %s"), fname, strerror (errno));
382 exit (1); 592 exit (EXIT_FAILURE);
383 } 593 }
384 594
385 free (fname); 595 free (fname);
386 596
387 fname = config_filename (prikeyfile, "hostkey"); 597 fname = conf.config_filename (conf.prikeyfile, "hostkey");
388 598
389 f = fopen (fname, "r"); 599 f = fopen (fname, "r");
390 if (f) 600 if (f)
391 { 601 {
392 rsa_key = RSA_new (); 602 conf.rsa_key = RSA_new ();
393 603
394 if (!PEM_read_RSAPrivateKey (f, &rsa_key, NULL, NULL)) 604 if (!PEM_read_RSAPrivateKey (f, &conf.rsa_key, NULL, NULL))
395 { 605 {
396 ERR_load_RSA_strings (); ERR_load_PEM_strings (); 606 ERR_load_RSA_strings (); ERR_load_PEM_strings ();
397 slog (L_ERR, _("unable to read private rsa key file '%s': %s"), fname, ERR_error_string (ERR_get_error (), 0)); 607 slog (L_ERR, _("unable to read private rsa key file '%s': %s"), fname, ERR_error_string (ERR_get_error (), 0));
398 exit (1); 608 exit (EXIT_FAILURE);
399 } 609 }
400 610
401 RSA_blinding_on (rsa_key, 0); 611 require (RSA_blinding_on (conf.rsa_key, 0));
402 612
403 fclose (f); 613 fclose (f);
404 } 614 }
405 else 615 else
406 { 616 {
407 slog (need_keys ? L_ERR : L_NOTICE, _("unable to open private rsa key file '%s': %s"), fname, strerror (errno)); 617 slog (need_keys ? L_ERR : L_NOTICE, _("unable to open private rsa key file '%s': %s"), fname, strerror (errno));
408 618
409 if (need_keys) 619 if (need_keys)
410 exit (1); 620 exit (EXIT_FAILURE);
621 }
622
623 if (need_keys && ::thisnode
624 && conf.rsa_key && conf.thisnode && conf.thisnode->rsa_key)
625 if (BN_cmp (conf.rsa_key->n, conf.thisnode->rsa_key->n) != 0
626 || BN_cmp (conf.rsa_key->e, conf.thisnode->rsa_key->e) != 0)
627 {
628 slog (L_NOTICE, _("private hostkey and public node key mismatch: is '%s' the correct node?"), ::thisnode);
629 exit (EXIT_FAILURE);
411 } 630 }
412 631
413 free (fname); 632 free (fname);
414}
415 633
634 for (configuration::node_vector::iterator i = conf.nodes.begin(); i != conf.nodes.end(); ++i)
635 (*i)->finalise ();
636}
637
638char *
416char *configuration::config_filename (const char *name, const char *dflt) 639configuration::config_filename (const char *name, const char *dflt)
417{ 640{
418 char *fname; 641 char *fname;
419 642
420 asprintf (&fname, name ? name : dflt, ::thisnode); 643 asprintf (&fname, name ? name : dflt, ::thisnode);
421 644
… …
452 printf ("\n"); 675 printf ("\n");
453} 676}
454 677
455configuration::configuration () 678configuration::configuration ()
456{ 679{
680 asprintf (&confbase, "%s/gvpe", CONFDIR);
681
457 init (); 682 init ();
458} 683}
459 684
460configuration::~configuration () 685configuration::~configuration ()
461{ 686{
462 cleanup (); 687 cleanup ();
463} 688}
464 689
465

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