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Comparing gvpe/src/conf.C (file contents):
Revision 1.5 by pcg, Fri Mar 28 04:05:10 2003 UTC vs.
Revision 1.48 by pcg, Sun Aug 10 02:49:27 2008 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>
… …
31#include <netdb.h> 39#include <netdb.h>
32#include <sys/stat.h> 40#include <sys/stat.h>
33#include <sys/types.h> 41#include <sys/types.h>
34#include <unistd.h> 42#include <unistd.h>
35 43
36#include <netinet/in.h> 44#include "netcompat.h"
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
56configuration::configuration () 62u8 best_protocol (u8 protset)
57{ 63{
58 init (); 64 if (protset & PROT_IPv4 ) return PROT_IPv4;
59} 65 if (protset & PROT_ICMPv4) return PROT_ICMPv4;
66 if (protset & PROT_UDPv4 ) return PROT_UDPv4;
67 if (protset & PROT_TCPv4 ) return PROT_TCPv4;
68 if (protset & PROT_DNSv4 ) return PROT_DNSv4;
60 69
61configuration::~configuration () 70 return 0;
71}
72
73const char *strprotocol (u8 protocol)
62{ 74{
63 cleanup (); 75 if (protocol & PROT_IPv4 ) return "rawip";
76 if (protocol & PROT_ICMPv4) return "icmp";
77 if (protocol & PROT_UDPv4 ) return "udp";
78 if (protocol & PROT_TCPv4 ) return "tcp";
79 if (protocol & PROT_DNSv4 ) return "dns";
80
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;
106}
107
108void
109conf_node::print ()
110{
111 printf ("%4d fe:fd:80:00:0%1x:%02x %c %-8.8s %-10.10s %s%s%d\n",
112 id,
113 id >> 8, id & 0xff,
114 compress ? 'Y' : 'N',
115 connectmode == C_ONDEMAND ? "ondemand"
116 : connectmode == C_NEVER ? "never"
117 : connectmode == C_ALWAYS ? "always"
118 : connectmode == C_DISABLED ? "disabled"
119 : "",
120 nodename,
121 hostname ? hostname : "",
122 hostname ? ":" : "",
123 hostname ? udp_port : 0
124 );
125}
126
127conf_node::~conf_node ()
128{
129#if 0
130 // does not work, because string pointers etc. are shared
131 // is not called, however
132 if (rsa_key)
133 RSA_free (rsa_key);
134
135 free (nodename);
136 free (hostname);
137 free (if_up_data);
138#if ENABLE_DNS
139 free (domain);
140 free (dns_hostname);
141#endif
142#endif
64} 143}
65 144
66void configuration::init () 145void configuration::init ()
67{ 146{
68 memset (this, 0, sizeof (*this)); 147 memset (this, 0, sizeof (*this));
69 148
149 mtu = DEFAULT_MTU;
70 rekey = DEFAULT_REKEY; 150 rekey = DEFAULT_REKEY;
71 keepalive = DEFAULT_KEEPALIVE; 151 keepalive = DEFAULT_KEEPALIVE;
72 llevel = L_INFO; 152 llevel = L_INFO;
73 ip_proto = IPPROTO_GRE; 153 ip_proto = IPPROTO_GRE;
154#if ENABLE_ICMP
155 icmp_type = ICMP_ECHOREPLY;
156#endif
74 157
75 default_node.udp_port = DEFAULT_UDPPORT; 158 default_node.udp_port = DEFAULT_UDPPORT;
159 default_node.tcp_port = DEFAULT_UDPPORT; // ehrm
76 default_node.connectmode = conf_node::C_ALWAYS; 160 default_node.connectmode = conf_node::C_ALWAYS;
77 default_node.compress = true; 161 default_node.compress = true;
78 default_node.can_send = PROT_UDPv4; 162 default_node.protocols = 0;
79 default_node.can_recv = PROT_IPv4; 163 default_node.max_retry = DEFAULT_MAX_RETRY;
164 default_node.max_ttl = DEFAULT_MAX_TTL;
165 default_node.max_queue = DEFAULT_MAX_QUEUE;
166 default_node.if_up_data = strdup ("");
167
168#if ENABLE_DNS
169 default_node.dns_port = 0; // default is 0 == client
170
171 dns_forw_host = strdup ("127.0.0.1");
172 dns_forw_port = 53;
173 dns_timeout_factor = DEFAULT_DNS_TIMEOUT_FACTOR;
174 dns_send_interval = DEFAULT_DNS_SEND_INTERVAL;
175 dns_overlap_factor = DEFAULT_DNS_OVERLAP_FACTOR;
176 dns_max_outstanding = DEFAULT_DNS_MAX_OUTSTANDING;
177#endif
178
179 conf.pidfilename = strdup (LOCALSTATEDIR "/run/gvpe.pid");
80} 180}
81 181
82void configuration::cleanup() 182void configuration::cleanup()
83{ 183{
84 if (rsa_key) 184 if (rsa_key)
85 RSA_free (rsa_key); 185 RSA_free (rsa_key);
86 186
87 free (ifname);
88
89 rsa_key = 0; 187 rsa_key = 0;
90 ifname = 0; 188
189 free (pidfilename); pidfilename = 0;
190 free (ifname); ifname = 0;
191#if ENABLE_HTTP_PROXY
192 free (proxy_host); proxy_host = 0;
193 free (proxy_auth); proxy_auth = 0;
194#endif
195#if ENABLE_DNS
196 free (dns_forw_host); dns_forw_host = 0;
197#endif
91} 198}
92 199
93void 200void
94configuration::clear_config () 201configuration::clear ()
95{ 202{
96 for (configuration::node_vector::iterator i = nodes.begin(); i != nodes.end(); ++i) 203 for (configuration::node_vector::iterator i = nodes.begin(); i != nodes.end(); ++i)
97 delete *i; 204 delete *i;
98 205
99 nodes.clear (); 206 nodes.clear ();
100 207
101 cleanup (); 208 cleanup ();
102 init (); 209 init ();
103} 210}
104 211
105#define parse_bool(target,name,trueval,falseval) \ 212#define parse_bool(target,name,trueval,falseval) do { \
106 if (!strcmp (val, "yes")) target = trueval; \ 213 if (!strcmp (val, "yes")) target = trueval; \
107 else if (!strcmp (val, "no")) target = falseval; \ 214 else if (!strcmp (val, "no")) target = falseval; \
108 else if (!strcmp (val, "true")) target = trueval; \ 215 else if (!strcmp (val, "true")) target = trueval; \
109 else if (!strcmp (val, "false")) target = falseval; \ 216 else if (!strcmp (val, "false")) target = falseval; \
110 else if (!strcmp (val, "on")) target = trueval; \ 217 else if (!strcmp (val, "on")) target = trueval; \
111 else if (!strcmp (val, "off")) target = falseval; \ 218 else if (!strcmp (val, "off")) target = falseval; \
112 else \ 219 else \
113 slog (L_WARN, \ 220 return _("illegal boolean value, only 'yes|true|on' or 'no|false|off' allowed. (ignored)"); \
114 _("illegal value for '%s', only 'yes|true|on' or 'no|false|off' allowed, at '%s' line %d"), \ 221} while (0)
115 name, var, fname, lineno);
116 222
117void configuration::read_config (bool need_keys) 223const char *
224configuration_parser::parse_line (char *line)
225{
226 {
227 char *end = line + strlen (line);
228
229 while (*end < ' ' && end >= line)
230 end--;
231
232 *++end = 0;
233 }
234
235 char *tok = line;
236 const char *var = strtok (tok, "\t =");
237 tok = 0;
238
239 if (!var || !var[0])
240 return 0; /* no tokens on this line */
241
242 if (var[0] == '#')
243 return 0; /* comment: ignore */
244
245 char *val = strtok (NULL, "\t\n\r =");
246
247 if (!val || val[0] == '#')
248 return _("no value given for variable. (ignored)");
249
250 if (!strcmp (var, "on"))
251 {
252 if (!::thisnode
253 || (val[0] == '!' && strcmp (val + 1, ::thisnode))
254 || !strcmp (val, ::thisnode))
255 return parse_line (strtok (NULL, "\n\r"));
256 else
257 return 0;
258 }
259
260 // truly global
261 if (!strcmp (var, "loglevel"))
262 {
263 loglevel l = string_to_loglevel (val);
264
265 if (l == L_NONE)
266 return _("unknown loglevel. (skipping)");
267 }
268 else if (!strcmp (var, "ip-proto"))
269 conf.ip_proto = atoi (val);
270 else if (!strcmp (var, "icmp-type"))
271 {
272#if ENABLE_ICMP
273 conf.icmp_type = atoi (val);
274#endif
275 }
276
277 // per config
278 else if (!strcmp (var, "node"))
279 {
280 parse_argv ();
281
282 conf.default_node.id++;
283 node = new conf_node (conf.default_node);
284 conf.nodes.push_back (node);
285 node->nodename = strdup (val);
286
287 {
288 char *fname;
289 FILE *f;
290
291 asprintf (&fname, "%s/pubkey/%s", confbase, node->nodename);
292
293 f = fopen (fname, "r");
294 if (f)
295 {
296 node->rsa_key = RSA_new ();
297
298 if (!PEM_read_RSAPublicKey(f, &node->rsa_key, NULL, NULL))
299 {
300 ERR_load_RSA_strings (); ERR_load_PEM_strings ();
301 slog (L_ERR, _("unable to open public rsa key file '%s': %s"), fname, ERR_error_string (ERR_get_error (), 0));
302 exit (EXIT_FAILURE);
303 }
304
305 require (RSA_blinding_on (node->rsa_key, 0));
306
307 fclose (f);
308 }
309 else
310 {
311 slog (need_keys ? L_ERR : L_NOTICE, _("unable to read public rsa key file '%s': %s"), fname, strerror (errno));
312
313 if (need_keys)
314 exit (EXIT_FAILURE);
315 }
316
317 free (fname);
318 }
319
320 if (::thisnode && !strcmp (node->nodename, ::thisnode))
321 conf.thisnode = node;
322 }
323 else if (!strcmp (var, "private-key"))
324 free (conf.prikeyfile), conf.prikeyfile = strdup (val);
325 else if (!strcmp (var, "ifpersist"))
326 parse_bool (conf.ifpersist, "ifpersist", true, false);
327 else if (!strcmp (var, "ifname"))
328 free (conf.ifname), conf.ifname = strdup (val);
329 else if (!strcmp (var, "rekey"))
330 conf.rekey = atoi (val);
331 else if (!strcmp (var, "keepalive"))
332 conf.keepalive = atoi (val);
333 else if (!strcmp (var, "mtu"))
334 conf.mtu = atoi (val);
335 else if (!strcmp (var, "if-up"))
336 free (conf.script_if_up), conf.script_if_up = strdup (val);
337 else if (!strcmp (var, "node-up"))
338 free (conf.script_node_up), conf.script_node_up = strdup (val);
339 else if (!strcmp (var, "node-down"))
340 free (conf.script_node_down), conf.script_node_down = strdup (val);
341 else if (!strcmp (var, "pid-file"))
342 free (conf.pidfilename), conf.pidfilename = strdup (val);
343 else if (!strcmp (var, "dns-forw-host"))
344 {
345#if ENABLE_DNS
346 free (conf.dns_forw_host), conf.dns_forw_host = strdup (val);
347#endif
348 }
349 else if (!strcmp (var, "dns-forw-port"))
350 {
351#if ENABLE_DNS
352 conf.dns_forw_port = atoi (val);
353#endif
354 }
355 else if (!strcmp (var, "dns-timeout-factor"))
356 {
357#if ENABLE_DNS
358 conf.dns_timeout_factor = atof (val);
359#endif
360 }
361 else if (!strcmp (var, "dns-send-interval"))
362 {
363#if ENABLE_DNS
364 conf.dns_send_interval = atoi (val);
365#endif
366 }
367 else if (!strcmp (var, "dns-overlap-factor"))
368 {
369#if ENABLE_DNS
370 conf.dns_overlap_factor = atof (val);
371#endif
372 }
373 else if (!strcmp (var, "dns-max-outstanding"))
374 {
375#if ENABLE_DNS
376 conf.dns_max_outstanding = atoi (val);
377#endif
378 }
379 else if (!strcmp (var, "http-proxy-host"))
380 {
381#if ENABLE_HTTP_PROXY
382 free (conf.proxy_host), conf.proxy_host = strdup (val);
383#endif
384 }
385 else if (!strcmp (var, "http-proxy-port"))
386 {
387#if ENABLE_HTTP_PROXY
388 conf.proxy_port = atoi (val);
389#endif
390 }
391 else if (!strcmp (var, "http-proxy-auth"))
392 {
393#if ENABLE_HTTP_PROXY
394 conf.proxy_auth = (char *)base64_encode ((const u8 *)val, strlen (val));
395#endif
396 }
397
398 /* node-specific, non-defaultable */
399 else if (node != &conf.default_node && !strcmp (var, "hostname"))
400 free (node->hostname), node->hostname = strdup (val);
401
402 /* node-specific, defaultable */
403 else if (!strcmp (var, "udp-port"))
404 node->udp_port = atoi (val);
405 else if (!strcmp (var, "tcp-port"))
406 node->tcp_port = atoi (val);
407 else if (!strcmp (var, "dns-hostname"))
408 {
409#if ENABLE_DNS
410 free (node->dns_hostname), node->dns_hostname = strdup (val);
411#endif
412 }
413 else if (!strcmp (var, "dns-port"))
414 {
415#if ENABLE_DNS
416 node->dns_port = atoi (val);
417#endif
418 }
419 else if (!strcmp (var, "dns-domain"))
420 {
421#if ENABLE_DNS
422 free (node->domain), node->domain = strdup (val);
423#endif
424 }
425 else if (!strcmp (var, "if-up-data"))
426 free (node->if_up_data), node->if_up_data = strdup (val);
427 else if (!strcmp (var, "router-priority"))
428 node->routerprio = atoi (val);
429 else if (!strcmp (var, "max-retry"))
430 node->max_retry = atoi (val);
431 else if (!strcmp (var, "connect"))
432 {
433 if (!strcmp (val, "ondemand"))
434 node->connectmode = conf_node::C_ONDEMAND;
435 else if (!strcmp (val, "never"))
436 node->connectmode = conf_node::C_NEVER;
437 else if (!strcmp (val, "always"))
438 node->connectmode = conf_node::C_ALWAYS;
439 else if (!strcmp (val, "disabled"))
440 node->connectmode = conf_node::C_DISABLED;
441 else
442 return _("illegal value for 'connectmode', use one of 'ondemand', 'never', 'always' or 'disabled'. (ignored)");
443 }
444 else if (!strcmp (var, "inherit-tos"))
445 parse_bool (node->inherit_tos, "inherit-tos", true, false);
446 else if (!strcmp (var, "compress"))
447 parse_bool (node->compress, "compress", true, false);
448 // all these bool options really really cost a lot of executable size!
449 else if (!strcmp (var, "enable-tcp"))
450 {
451#if ENABLE_TCP
452 u8 v; parse_bool (v, "enable-tcp" , PROT_TCPv4, 0); node->protocols = (node->protocols & ~PROT_TCPv4) | v;
453#endif
454 }
455 else if (!strcmp (var, "enable-icmp"))
456 {
457#if ENABLE_ICMP
458 u8 v; parse_bool (v, "enable-icmp" , PROT_ICMPv4, 0); node->protocols = (node->protocols & ~PROT_ICMPv4) | v;
459#endif
460 }
461 else if (!strcmp (var, "enable-dns"))
462 {
463#if ENABLE_DNS
464 u8 v; parse_bool (v, "enable-dns" , PROT_DNSv4, 0); node->protocols = (node->protocols & ~PROT_DNSv4) | v;
465#endif
466 }
467 else if (!strcmp (var, "enable-udp"))
468 {
469 u8 v; parse_bool (v, "enable-udp" , PROT_UDPv4, 0); node->protocols = (node->protocols & ~PROT_UDPv4) | v;
470 }
471 else if (!strcmp (var, "enable-rawip"))
472 {
473 u8 v; parse_bool (v, "enable-rawip", PROT_IPv4, 0); node->protocols = (node->protocols & ~PROT_IPv4 ) | v;
474 }
475 else if (!strcmp (var, "allow-direct"))
476 node->allow_direct.push_back (strdup (val));
477 else if (!strcmp (var, "deny-direct"))
478 node->deny_direct.push_back (strdup (val));
479 else if (!strcmp (var, "max-ttl"))
480 node->max_ttl = atof (val);
481 else if (!strcmp (var, "max-queue"))
482 node->max_queue = atoi (val);
483
484 // unknown or misplaced
485 else
486 return _("unknown configuration directive. (ignored)");
487
488 return 0;
489}
490
491void conf_node::finalise ()
492{
493 if (max_queue < 1)
494 {
495 slog (L_WARN, _("%s: max-queue value invalid, setting it to 1."), nodename);
496 max_queue = 1;
497 }
498
499 if (routerprio && (connectmode != C_ALWAYS && connectmode != C_DISABLED))
500 {
501 //slog (L_WARN, _("%s: has non-zero router-priority but either 'never' or 'ondemand' as connectmode, setting it to 'always'."), nodename);
502 connectmode = C_ALWAYS;
503 }
504}
505
506void configuration_parser::parse_argv ()
507{
508 for (int i = 0; i < argc; ++i)
509 {
510 char *v = argv [i];
511
512 if (!*v)
513 continue;
514
515 char *enode = v;
516
517 while (*enode != '.' && *enode > ' ' && *enode != '=' && *enode)
518 enode++;
519
520 if (*enode != '.')
521 enode = 0;
522
523 char *wnode = node == &conf.default_node
524 ? 0
525 : node->nodename;
526
527 if ((!wnode && !enode)
528 || (wnode && enode && !strncmp (wnode, v, enode - v)))
529 {
530 const char *warn = parse_line (enode ? enode + 1 : v);
531
532 if (warn)
533 slog (L_WARN, _("%s, while parsing command line option '%s'."), warn, v);
534
535 *v = 0;
536 }
537 }
538}
539
540configuration_parser::configuration_parser (configuration &conf,
541 bool need_keys,
542 int argc,
543 char **argv)
544: conf (conf),need_keys (need_keys), argc (argc), argv (argv)
118{ 545{
119 char *fname; 546 char *fname;
120 FILE *f; 547 FILE *f;
121 548
122 clear_config (); 549 conf.clear ();
123 550
124 asprintf (&fname, "%s/vped.conf", confbase); 551 asprintf (&fname, "%s/gvpe.conf", confbase);
125 f = fopen (fname, "r"); 552 f = fopen (fname, "r");
126 553
127 if (f) 554 if (f)
128 { 555 {
129 char line[16384]; 556 char line[16384];
130 int lineno = 0; 557 int lineno = 0;
131 char *var, *val; 558 node = &conf.default_node;
132 conf_node *node = &default_node;
133 559
134 while (fgets (line, sizeof (line), f)) 560 while (fgets (line, sizeof (line), f))
135 { 561 {
136 lineno++; 562 lineno++;
137 563
138 { 564 const char *warn = parse_line (line);
139 char *end = line + strlen (line);
140 565
141 while (*end < ' ' && end >= line) 566 if (warn)
142 end--; 567 slog (L_WARN, _("%s, at '%s', line %d."), warn, fname, lineno);
143
144 *++end = 0;
145 }
146
147 char *tok = line;
148
149retry:
150 var = strtok (tok, "\t =");
151 tok = 0;
152
153 if (!var || !var[0])
154 continue; /* no tokens on this line */
155
156 if (var[0] == '#')
157 continue; /* comment: ignore */
158
159 val = strtok (NULL, "\t\n\r =");
160
161 if (!val || val[0] == '#')
162 {
163 slog (L_WARN,
164 _("no value for variable `%s', at '%s' line %d"),
165 var, fname, lineno);
166 break;
167 }
168
169 if (!strcmp (var, "on"))
170 {
171 if (!::thisnode
172 || (val[0] == '!' && strcmp (val + 1, ::thisnode))
173 || !strcmp (val, ::thisnode))
174 goto retry;
175
176 continue;
177 }
178
179 // truly global
180 if (!strcmp (var, "loglevel"))
181 {
182 loglevel l = string_to_loglevel (val);
183
184 if (l != L_NONE)
185 llevel = l;
186 else
187 slog (L_WARN, "'%s': %s, at '%s' line %d", val, UNKNOWN_LOGLEVEL, fname, line);
188 }
189 else if (!strcmp (var, "ip-proto"))
190 ip_proto = atoi (val);
191
192 // per config
193 else if (!strcmp (var, "node"))
194 {
195 default_node.id++;
196
197 node = new conf_node (default_node);
198
199 nodes.push_back (node);
200
201 node->nodename = strdup (val);
202
203 {
204 char *fname;
205 FILE *f;
206
207 asprintf (&fname, "%s/pubkey/%s", confbase, node->nodename);
208
209 f = fopen (fname, "r");
210 if (f)
211 {
212 node->rsa_key = RSA_new ();
213
214 if (!PEM_read_RSAPublicKey(f, &node->rsa_key, NULL, NULL))
215 {
216 ERR_load_RSA_strings (); ERR_load_PEM_strings ();
217 slog (L_ERR, _("unable to open public rsa key file '%s': %s"), fname, ERR_error_string (ERR_get_error (), 0));
218 exit (1);
219 }
220
221 RSA_blinding_on (node->rsa_key, 0);
222
223 fclose (f);
224 }
225 else
226 {
227 slog (need_keys ? L_ERR : L_NOTICE, _("unable to read public rsa key file '%s': %s"), fname, strerror (errno));
228
229 if (need_keys)
230 exit (1);
231 }
232
233 free (fname);
234 }
235
236 if (!::thisnode || !strcmp (node->nodename, ::thisnode))
237 thisnode = node;
238 }
239 else if (!strcmp (var, "private-key"))
240 prikeyfile = strdup (val);
241 else if (!strcmp (var, "ifpersist"))
242 {
243 parse_bool (ifpersist, "ifpersist", true, false);
244 }
245 else if (!strcmp (var, "ifname"))
246 ifname = strdup (val);
247 else if (!strcmp (var, "rekey"))
248 rekey = atoi (val);
249 else if (!strcmp (var, "keepalive"))
250 keepalive = atoi (val);
251 else if (!strcmp (var, "mtu"))
252 mtu = atoi (val);
253 else if (!strcmp (var, "if-up"))
254 script_if_up = strdup (val);
255 else if (!strcmp (var, "node-up"))
256 script_node_up = strdup (val);
257 else if (!strcmp (var, "node-down"))
258 script_node_down = strdup (val);
259
260 /* node-specific, non-defaultable */
261 else if (node != &default_node && !strcmp (var, "hostname"))
262 {
263 free (node->hostname);
264 node->hostname = strdup (val);
265 }
266
267 /* node-specific, defaultable */
268 else if (!strcmp (var, "udp-port"))
269 node->udp_port = atoi (val);
270 else if (!strcmp (var, "router-priority"))
271 node->routerprio = atoi (val);
272 else if (!strcmp (var, "connect"))
273 {
274 if (!strcmp (val, "ondemand"))
275 node->connectmode = conf_node::C_ONDEMAND;
276 else if (!strcmp (val, "never"))
277 node->connectmode = conf_node::C_NEVER;
278 else if (!strcmp (val, "always"))
279 node->connectmode = conf_node::C_ALWAYS;
280 else if (!strcmp (val, "disabled"))
281 node->connectmode = conf_node::C_DISABLED;
282 else
283 slog (L_WARN,
284 _("illegal value for 'connectmode', use one of 'ondemand', 'never', 'always' or 'disabled', at '%s' line %d"),
285 var, fname, lineno);
286 }
287 else if (!strcmp (var, "inherit-tos"))
288 {
289 parse_bool (node->inherit_tos, "inherit-tos", true, false);
290 }
291 else if (!strcmp (var, "compress"))
292 {
293 parse_bool (node->compress, "compress", true, false);
294 }
295 // all these bool options really really cost a lot of executable size!
296 else if (!strcmp (var, "can-send-udp"))
297 {
298 u8 v; parse_bool (v, "can-send-udp", PROT_UDPv4, 0); node->can_send = (node->can_send & ~PROT_UDPv4) | v;
299 }
300 else if (!strcmp (var, "can-recv-udp"))
301 {
302 u8 v; parse_bool (v, "can-recv-udp", PROT_UDPv4, 0); node->can_recv = (node->can_recv & ~PROT_UDPv4) | v;
303 }
304 else if (!strcmp (var, "can-send-rawip"))
305 {
306 u8 v; parse_bool (v, "can-send-rawip", PROT_IPv4, 0); node->can_send = (node->can_send & ~PROT_IPv4) | v;
307 }
308 else if (!strcmp (var, "can-recv-rawip"))
309 {
310 u8 v; parse_bool (v, "can-recv-rawip", PROT_IPv4, 0); node->can_recv = (node->can_recv & ~PROT_IPv4) | v;
311 }
312
313 // unknown or misplaced
314 else
315 {
316 slog (L_WARN,
317 _("unknown or misplaced variable `%s', at '%s' line %d"),
318 var, fname, lineno);
319 }
320 } 568 }
321 569
322 fclose (f); 570 fclose (f);
571
572 parse_argv ();
323 } 573 }
324 else 574 else
325 { 575 {
326 slog (L_ERR, _("unable to read config file '%s': %s"), fname, strerror (errno)); 576 slog (L_ERR, _("unable to read config file '%s': %s"), fname, strerror (errno));
327 exit (1); 577 exit (EXIT_FAILURE);
328 } 578 }
329 579
330 free (fname); 580 free (fname);
331 581
332 fname = config_filename (prikeyfile, "hostkey"); 582 fname = conf.config_filename (conf.prikeyfile, "hostkey");
333 583
334 f = fopen (fname, "r"); 584 f = fopen (fname, "r");
335 if (f) 585 if (f)
336 { 586 {
337 rsa_key = RSA_new (); 587 conf.rsa_key = RSA_new ();
338 588
339 if (!PEM_read_RSAPrivateKey (f, &rsa_key, NULL, NULL)) 589 if (!PEM_read_RSAPrivateKey (f, &conf.rsa_key, NULL, NULL))
340 { 590 {
341 ERR_load_RSA_strings (); ERR_load_PEM_strings (); 591 ERR_load_RSA_strings (); ERR_load_PEM_strings ();
342 slog (L_ERR, _("unable to read private rsa key file '%s': %s"), fname, ERR_error_string (ERR_get_error (), 0)); 592 slog (L_ERR, _("unable to read private rsa key file '%s': %s"), fname, ERR_error_string (ERR_get_error (), 0));
343 exit (1); 593 exit (EXIT_FAILURE);
344 } 594 }
345 595
346 RSA_blinding_on (rsa_key, 0); 596 require (RSA_blinding_on (conf.rsa_key, 0));
347 597
348 fclose (f); 598 fclose (f);
349 } 599 }
350 else 600 else
351 { 601 {
352 slog (need_keys ? L_ERR : L_NOTICE, _("unable to open private rsa key file '%s': %s"), fname, strerror (errno)); 602 slog (need_keys ? L_ERR : L_NOTICE, _("unable to open private rsa key file '%s': %s"), fname, strerror (errno));
353 603
354 if (need_keys) 604 if (need_keys)
355 exit (1); 605 exit (EXIT_FAILURE);
606 }
607
608 if (need_keys && ::thisnode
609 && conf.rsa_key && conf.thisnode && conf.thisnode->rsa_key)
610 if (BN_cmp (conf.rsa_key->n, conf.thisnode->rsa_key->n) != 0
611 || BN_cmp (conf.rsa_key->e, conf.thisnode->rsa_key->e) != 0)
612 {
613 slog (L_NOTICE, _("private hostkey and public node key mismatch: is '%s' the correct node?"), ::thisnode);
614 exit (EXIT_FAILURE);
356 } 615 }
357 616
358 free (fname); 617 free (fname);
618
619 for (configuration::node_vector::iterator i = conf.nodes.begin(); i != conf.nodes.end(); ++i)
620 (*i)->finalise ();
359} 621}
360 622
361char *configuration::config_filename (const char *name, const char *dflt) 623char *configuration::config_filename (const char *name, const char *dflt)
362{ 624{
363 char *fname; 625 char *fname;
… …
383 printf (_("MTU: %d\n"), mtu); 645 printf (_("MTU: %d\n"), mtu);
384 printf (_("rekeying interval: %d\n"), rekey); 646 printf (_("rekeying interval: %d\n"), rekey);
385 printf (_("keepalive interval: %d\n"), keepalive); 647 printf (_("keepalive interval: %d\n"), keepalive);
386 printf (_("interface: %s\n"), ifname); 648 printf (_("interface: %s\n"), ifname);
387 printf (_("primary rsa key: %s\n"), prikeyfile ? prikeyfile : "<default>"); 649 printf (_("primary rsa key: %s\n"), prikeyfile ? prikeyfile : "<default>");
388 printf (_("rsa key size: %d\n"), rsa_key ? RSA_size (rsa_key) : -1); 650 printf (_("rsa key size: %d\n"), rsa_key ? RSA_size (rsa_key) * 8 : -1);
389 printf ("\n"); 651 printf ("\n");
390 652
391 printf ("%4s %-17s %s %-8.8s %-10.10s %s\n", 653 printf ("%4s %-17s %s %-8.8s %-10.10s %s\n",
392 _("ID#"), _("MAC"), _("Com"), _("Conmode"), _("Node"), _("Host:Port")); 654 _("ID#"), _("MAC"), _("Com"), _("Conmode"), _("Node"), _("Host:Port"));
393 655
… …
395 (*i)->print (); 657 (*i)->print ();
396 658
397 printf ("\n"); 659 printf ("\n");
398} 660}
399 661
400void 662configuration::configuration ()
401conf_node::print ()
402{ 663{
403 printf ("%4d fe:fd:80:00:0%1x:%02x %c %-8.8s %-10.10s %s%s%d\n", 664 asprintf (&confbase, "%s/gvpe", CONFDIR);
404 id,
405 id >> 8, id & 0xff,
406 compress ? 'Y' : 'N',
407 connectmode == C_ONDEMAND ? "ondemand" :
408 connectmode == C_NEVER ? "never" :
409 connectmode == C_ALWAYS ? "always" : "",
410 nodename,
411 hostname ? hostname : "",
412 hostname ? ":" : "",
413 hostname ? udp_port : 0
414 );
415}
416 665
666 init ();
667}
668
669configuration::~configuration ()
670{
671 cleanup ();
672}
673
674

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