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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 1.50 by pcg, Mon Mar 23 15:22:00 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>
… …
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;
150 nfmark = 0;
70 rekey = DEFAULT_REKEY; 151 rekey = DEFAULT_REKEY;
71 keepalive = DEFAULT_KEEPALIVE; 152 keepalive = DEFAULT_KEEPALIVE;
72 llevel = L_INFO; 153 llevel = L_INFO;
73 ip_proto = IPPROTO_GRE; 154 ip_proto = IPPROTO_GRE;
155#if ENABLE_ICMP
156 icmp_type = ICMP_ECHOREPLY;
157#endif
74 158
75 default_node.udp_port = DEFAULT_UDPPORT; 159 default_node.udp_port = DEFAULT_UDPPORT;
160 default_node.tcp_port = DEFAULT_UDPPORT; // ehrm
76 default_node.connectmode = conf_node::C_ALWAYS; 161 default_node.connectmode = conf_node::C_ALWAYS;
77 default_node.compress = true; 162 default_node.compress = true;
78 default_node.can_send = PROT_UDPv4; 163 default_node.protocols = 0;
79 default_node.can_recv = PROT_IPv4; 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");
80} 181}
81 182
82void configuration::cleanup() 183void configuration::cleanup()
83{ 184{
84 if (rsa_key) 185 if (rsa_key)
85 RSA_free (rsa_key); 186 RSA_free (rsa_key);
86 187
87 free (ifname);
88
89 rsa_key = 0; 188 rsa_key = 0;
90 ifname = 0; 189
190 free (pidfilename); pidfilename = 0;
191 free (ifname); ifname = 0;
192#if ENABLE_HTTP_PROXY
193 free (proxy_host); proxy_host = 0;
194 free (proxy_auth); proxy_auth = 0;
195#endif
196#if ENABLE_DNS
197 free (dns_forw_host); dns_forw_host = 0;
198#endif
91} 199}
92 200
93void 201void
94configuration::clear_config () 202configuration::clear ()
95{ 203{
96 for (configuration::node_vector::iterator i = nodes.begin(); i != nodes.end(); ++i) 204 for (configuration::node_vector::iterator i = nodes.begin(); i != nodes.end(); ++i)
97 delete *i; 205 delete *i;
98 206
99 nodes.clear (); 207 nodes.clear ();
100 208
101 cleanup (); 209 cleanup ();
102 init (); 210 init ();
103} 211}
104 212
105#define parse_bool(target,name,trueval,falseval) \ 213#define parse_bool(target,name,trueval,falseval) do { \
106 if (!strcmp (val, "yes")) target = trueval; \ 214 if (!strcmp (val, "yes")) target = trueval; \
107 else if (!strcmp (val, "no")) target = falseval; \ 215 else if (!strcmp (val, "no")) target = falseval; \
108 else if (!strcmp (val, "true")) target = trueval; \ 216 else if (!strcmp (val, "true")) target = trueval; \
109 else if (!strcmp (val, "false")) target = falseval; \ 217 else if (!strcmp (val, "false")) target = falseval; \
110 else if (!strcmp (val, "on")) target = trueval; \ 218 else if (!strcmp (val, "on")) target = trueval; \
111 else if (!strcmp (val, "off")) target = falseval; \ 219 else if (!strcmp (val, "off")) target = falseval; \
112 else \ 220 else \
113 slog (L_WARN, \ 221 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"), \ 222} while (0)
115 name, var, fname, lineno);
116 223
117void configuration::read_config (bool need_keys) 224const char *
225configuration_parser::parse_line (char *line)
226{
227 {
228 char *end = line + strlen (line);
229
230 while (*end < ' ' && end >= line)
231 end--;
232
233 *++end = 0;
234 }
235
236 char *tok = line;
237 const char *var = strtok (tok, "\t =");
238 tok = 0;
239
240 if (!var || !var[0])
241 return 0; /* no tokens on this line */
242
243 if (var[0] == '#')
244 return 0; /* comment: ignore */
245
246 char *val = strtok (NULL, "\t\n\r =");
247
248 if (!val || val[0] == '#')
249 return _("no value given for variable. (ignored)");
250
251 if (!strcmp (var, "on"))
252 {
253 if (!::thisnode
254 || (val[0] == '!' && strcmp (val + 1, ::thisnode))
255 || !strcmp (val, ::thisnode))
256 return parse_line (strtok (NULL, "\n\r"));
257 else
258 return 0;
259 }
260
261 // truly global
262 if (!strcmp (var, "loglevel"))
263 {
264 loglevel l = string_to_loglevel (val);
265
266 if (l == L_NONE)
267 return _("unknown loglevel. (skipping)");
268 }
269 else if (!strcmp (var, "ip-proto"))
270 conf.ip_proto = atoi (val);
271 else if (!strcmp (var, "icmp-type"))
272 {
273#if ENABLE_ICMP
274 conf.icmp_type = atoi (val);
275#endif
276 }
277
278 // per config
279 else if (!strcmp (var, "node"))
280 {
281 parse_argv ();
282
283 conf.default_node.id++;
284 node = new conf_node (conf.default_node);
285 conf.nodes.push_back (node);
286 node->nodename = strdup (val);
287
288 {
289 char *fname;
290 FILE *f;
291
292 asprintf (&fname, "%s/pubkey/%s", confbase, node->nodename);
293
294 f = fopen (fname, "r");
295 if (f)
296 {
297 node->rsa_key = RSA_new ();
298
299 if (!PEM_read_RSAPublicKey(f, &node->rsa_key, NULL, NULL))
300 {
301 ERR_load_RSA_strings (); ERR_load_PEM_strings ();
302 slog (L_ERR, _("unable to open public rsa key file '%s': %s"), fname, ERR_error_string (ERR_get_error (), 0));
303 exit (EXIT_FAILURE);
304 }
305
306 require (RSA_blinding_on (node->rsa_key, 0));
307
308 fclose (f);
309 }
310 else
311 {
312 slog (need_keys ? L_ERR : L_NOTICE, _("unable to read public rsa key file '%s': %s"), fname, strerror (errno));
313
314 if (need_keys)
315 exit (EXIT_FAILURE);
316 }
317
318 free (fname);
319 }
320
321 if (::thisnode && !strcmp (node->nodename, ::thisnode))
322 conf.thisnode = node;
323 }
324 else if (!strcmp (var, "private-key"))
325 free (conf.prikeyfile), conf.prikeyfile = strdup (val);
326 else if (!strcmp (var, "ifpersist"))
327 parse_bool (conf.ifpersist, "ifpersist", true, false);
328 else if (!strcmp (var, "ifname"))
329 free (conf.ifname), conf.ifname = strdup (val);
330 else if (!strcmp (var, "rekey"))
331 conf.rekey = atoi (val);
332 else if (!strcmp (var, "keepalive"))
333 conf.keepalive = atoi (val);
334 else if (!strcmp (var, "mtu"))
335 conf.mtu = atoi (val);
336 else if (!strcmp (var, "nfmark"))
337 conf.nfmark = atoi (val);
338 else if (!strcmp (var, "if-up"))
339 free (conf.script_if_up), conf.script_if_up = strdup (val);
340 else if (!strcmp (var, "node-up"))
341 free (conf.script_node_up), conf.script_node_up = strdup (val);
342 else if (!strcmp (var, "node-down"))
343 free (conf.script_node_down), conf.script_node_down = strdup (val);
344 else if (!strcmp (var, "pid-file"))
345 free (conf.pidfilename), conf.pidfilename = strdup (val);
346 else if (!strcmp (var, "dns-forw-host"))
347 {
348#if ENABLE_DNS
349 free (conf.dns_forw_host), conf.dns_forw_host = strdup (val);
350#endif
351 }
352 else if (!strcmp (var, "dns-forw-port"))
353 {
354#if ENABLE_DNS
355 conf.dns_forw_port = atoi (val);
356#endif
357 }
358 else if (!strcmp (var, "dns-timeout-factor"))
359 {
360#if ENABLE_DNS
361 conf.dns_timeout_factor = atof (val);
362#endif
363 }
364 else if (!strcmp (var, "dns-send-interval"))
365 {
366#if ENABLE_DNS
367 conf.dns_send_interval = atoi (val);
368#endif
369 }
370 else if (!strcmp (var, "dns-overlap-factor"))
371 {
372#if ENABLE_DNS
373 conf.dns_overlap_factor = atof (val);
374#endif
375 }
376 else if (!strcmp (var, "dns-max-outstanding"))
377 {
378#if ENABLE_DNS
379 conf.dns_max_outstanding = atoi (val);
380#endif
381 }
382 else if (!strcmp (var, "http-proxy-host"))
383 {
384#if ENABLE_HTTP_PROXY
385 free (conf.proxy_host), conf.proxy_host = strdup (val);
386#endif
387 }
388 else if (!strcmp (var, "http-proxy-port"))
389 {
390#if ENABLE_HTTP_PROXY
391 conf.proxy_port = atoi (val);
392#endif
393 }
394 else if (!strcmp (var, "http-proxy-auth"))
395 {
396#if ENABLE_HTTP_PROXY
397 conf.proxy_auth = (char *)base64_encode ((const u8 *)val, strlen (val));
398#endif
399 }
400
401 /* node-specific, non-defaultable */
402 else if (node != &conf.default_node && !strcmp (var, "hostname"))
403 free (node->hostname), node->hostname = strdup (val);
404
405 /* node-specific, defaultable */
406 else if (!strcmp (var, "udp-port"))
407 node->udp_port = atoi (val);
408 else if (!strcmp (var, "tcp-port"))
409 node->tcp_port = atoi (val);
410 else if (!strcmp (var, "dns-hostname"))
411 {
412#if ENABLE_DNS
413 free (node->dns_hostname), node->dns_hostname = strdup (val);
414#endif
415 }
416 else if (!strcmp (var, "dns-port"))
417 {
418#if ENABLE_DNS
419 node->dns_port = atoi (val);
420#endif
421 }
422 else if (!strcmp (var, "dns-domain"))
423 {
424#if ENABLE_DNS
425 free (node->domain), node->domain = strdup (val);
426#endif
427 }
428 else if (!strcmp (var, "if-up-data"))
429 free (node->if_up_data), node->if_up_data = strdup (val);
430 else if (!strcmp (var, "router-priority"))
431 node->routerprio = atoi (val);
432 else if (!strcmp (var, "max-retry"))
433 node->max_retry = atoi (val);
434 else if (!strcmp (var, "connect"))
435 {
436 if (!strcmp (val, "ondemand"))
437 node->connectmode = conf_node::C_ONDEMAND;
438 else if (!strcmp (val, "never"))
439 node->connectmode = conf_node::C_NEVER;
440 else if (!strcmp (val, "always"))
441 node->connectmode = conf_node::C_ALWAYS;
442 else if (!strcmp (val, "disabled"))
443 node->connectmode = conf_node::C_DISABLED;
444 else
445 return _("illegal value for 'connectmode', use one of 'ondemand', 'never', 'always' or 'disabled'. (ignored)");
446 }
447 else if (!strcmp (var, "inherit-tos"))
448 parse_bool (node->inherit_tos, "inherit-tos", true, false);
449 else if (!strcmp (var, "compress"))
450 parse_bool (node->compress, "compress", true, false);
451 // all these bool options really really cost a lot of executable size!
452 else if (!strcmp (var, "enable-tcp"))
453 {
454#if ENABLE_TCP
455 u8 v; parse_bool (v, "enable-tcp" , PROT_TCPv4, 0); node->protocols = (node->protocols & ~PROT_TCPv4) | v;
456#endif
457 }
458 else if (!strcmp (var, "enable-icmp"))
459 {
460#if ENABLE_ICMP
461 u8 v; parse_bool (v, "enable-icmp" , PROT_ICMPv4, 0); node->protocols = (node->protocols & ~PROT_ICMPv4) | v;
462#endif
463 }
464 else if (!strcmp (var, "enable-dns"))
465 {
466#if ENABLE_DNS
467 u8 v; parse_bool (v, "enable-dns" , PROT_DNSv4, 0); node->protocols = (node->protocols & ~PROT_DNSv4) | v;
468#endif
469 }
470 else if (!strcmp (var, "enable-udp"))
471 {
472 u8 v; parse_bool (v, "enable-udp" , PROT_UDPv4, 0); node->protocols = (node->protocols & ~PROT_UDPv4) | v;
473 }
474 else if (!strcmp (var, "enable-rawip"))
475 {
476 u8 v; parse_bool (v, "enable-rawip", PROT_IPv4, 0); node->protocols = (node->protocols & ~PROT_IPv4 ) | v;
477 }
478 else if (!strcmp (var, "allow-direct"))
479 node->allow_direct.push_back (strdup (val));
480 else if (!strcmp (var, "deny-direct"))
481 node->deny_direct.push_back (strdup (val));
482 else if (!strcmp (var, "max-ttl"))
483 node->max_ttl = atof (val);
484 else if (!strcmp (var, "max-queue"))
485 node->max_queue = atoi (val);
486
487 // unknown or misplaced
488 else
489 return _("unknown configuration directive. (ignored)");
490
491 return 0;
492}
493
494void conf_node::finalise ()
495{
496 if (max_queue < 1)
497 {
498 slog (L_WARN, _("%s: max-queue value invalid, setting it to 1."), nodename);
499 max_queue = 1;
500 }
501
502 if (routerprio > 1 && (connectmode != C_ALWAYS && connectmode != C_DISABLED))
503 {
504 //slog (L_WARN, _("%s: has non-zero router-priority but either 'never' or 'ondemand' as connectmode, setting it to 'always'."), nodename);
505 connectmode = C_ALWAYS;
506 }
507}
508
509void configuration_parser::parse_argv ()
510{
511 for (int i = 0; i < argc; ++i)
512 {
513 char *v = argv [i];
514
515 if (!*v)
516 continue;
517
518 char *enode = v;
519
520 while (*enode != '.' && *enode > ' ' && *enode != '=' && *enode)
521 enode++;
522
523 if (*enode != '.')
524 enode = 0;
525
526 char *wnode = node == &conf.default_node
527 ? 0
528 : node->nodename;
529
530 if ((!wnode && !enode)
531 || (wnode && enode && !strncmp (wnode, v, enode - v)))
532 {
533 const char *warn = parse_line (enode ? enode + 1 : v);
534
535 if (warn)
536 slog (L_WARN, _("%s, while parsing command line option '%s'."), warn, v);
537
538 *v = 0;
539 }
540 }
541}
542
543configuration_parser::configuration_parser (configuration &conf,
544 bool need_keys,
545 int argc,
546 char **argv)
547: conf (conf),need_keys (need_keys), argc (argc), argv (argv)
118{ 548{
119 char *fname; 549 char *fname;
120 FILE *f; 550 FILE *f;
121 551
122 clear_config (); 552 conf.clear ();
123 553
124 asprintf (&fname, "%s/vped.conf", confbase); 554 asprintf (&fname, "%s/gvpe.conf", confbase);
125 f = fopen (fname, "r"); 555 f = fopen (fname, "r");
126 556
127 if (f) 557 if (f)
128 { 558 {
129 char line[16384]; 559 char line[16384];
130 int lineno = 0; 560 int lineno = 0;
131 char *var, *val; 561 node = &conf.default_node;
132 conf_node *node = &default_node;
133 562
134 while (fgets (line, sizeof (line), f)) 563 while (fgets (line, sizeof (line), f))
135 { 564 {
136 lineno++; 565 lineno++;
137 566
138 { 567 const char *warn = parse_line (line);
139 char *end = line + strlen (line);
140 568
141 while (*end < ' ' && end >= line) 569 if (warn)
142 end--; 570 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 } 571 }
321 572
322 fclose (f); 573 fclose (f);
574
575 parse_argv ();
323 } 576 }
324 else 577 else
325 { 578 {
326 slog (L_ERR, _("unable to read config file '%s': %s"), fname, strerror (errno)); 579 slog (L_ERR, _("unable to read config file '%s': %s"), fname, strerror (errno));
327 exit (1); 580 exit (EXIT_FAILURE);
328 } 581 }
329 582
330 free (fname); 583 free (fname);
331 584
332 fname = config_filename (prikeyfile, "hostkey"); 585 fname = conf.config_filename (conf.prikeyfile, "hostkey");
333 586
334 f = fopen (fname, "r"); 587 f = fopen (fname, "r");
335 if (f) 588 if (f)
336 { 589 {
337 rsa_key = RSA_new (); 590 conf.rsa_key = RSA_new ();
338 591
339 if (!PEM_read_RSAPrivateKey (f, &rsa_key, NULL, NULL)) 592 if (!PEM_read_RSAPrivateKey (f, &conf.rsa_key, NULL, NULL))
340 { 593 {
341 ERR_load_RSA_strings (); ERR_load_PEM_strings (); 594 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)); 595 slog (L_ERR, _("unable to read private rsa key file '%s': %s"), fname, ERR_error_string (ERR_get_error (), 0));
343 exit (1); 596 exit (EXIT_FAILURE);
344 } 597 }
345 598
346 RSA_blinding_on (rsa_key, 0); 599 require (RSA_blinding_on (conf.rsa_key, 0));
347 600
348 fclose (f); 601 fclose (f);
349 } 602 }
350 else 603 else
351 { 604 {
352 slog (need_keys ? L_ERR : L_NOTICE, _("unable to open private rsa key file '%s': %s"), fname, strerror (errno)); 605 slog (need_keys ? L_ERR : L_NOTICE, _("unable to open private rsa key file '%s': %s"), fname, strerror (errno));
353 606
354 if (need_keys) 607 if (need_keys)
355 exit (1); 608 exit (EXIT_FAILURE);
609 }
610
611 if (need_keys && ::thisnode
612 && conf.rsa_key && conf.thisnode && conf.thisnode->rsa_key)
613 if (BN_cmp (conf.rsa_key->n, conf.thisnode->rsa_key->n) != 0
614 || BN_cmp (conf.rsa_key->e, conf.thisnode->rsa_key->e) != 0)
615 {
616 slog (L_NOTICE, _("private hostkey and public node key mismatch: is '%s' the correct node?"), ::thisnode);
617 exit (EXIT_FAILURE);
356 } 618 }
357 619
358 free (fname); 620 free (fname);
621
622 for (configuration::node_vector::iterator i = conf.nodes.begin(); i != conf.nodes.end(); ++i)
623 (*i)->finalise ();
359} 624}
360 625
361char *configuration::config_filename (const char *name, const char *dflt) 626char *configuration::config_filename (const char *name, const char *dflt)
362{ 627{
363 char *fname; 628 char *fname;
… …
383 printf (_("MTU: %d\n"), mtu); 648 printf (_("MTU: %d\n"), mtu);
384 printf (_("rekeying interval: %d\n"), rekey); 649 printf (_("rekeying interval: %d\n"), rekey);
385 printf (_("keepalive interval: %d\n"), keepalive); 650 printf (_("keepalive interval: %d\n"), keepalive);
386 printf (_("interface: %s\n"), ifname); 651 printf (_("interface: %s\n"), ifname);
387 printf (_("primary rsa key: %s\n"), prikeyfile ? prikeyfile : "<default>"); 652 printf (_("primary rsa key: %s\n"), prikeyfile ? prikeyfile : "<default>");
388 printf (_("rsa key size: %d\n"), rsa_key ? RSA_size (rsa_key) : -1); 653 printf (_("rsa key size: %d\n"), rsa_key ? RSA_size (rsa_key) * 8 : -1);
389 printf ("\n"); 654 printf ("\n");
390 655
391 printf ("%4s %-17s %s %-8.8s %-10.10s %s\n", 656 printf ("%4s %-17s %s %-8.8s %-10.10s %s\n",
392 _("ID#"), _("MAC"), _("Com"), _("Conmode"), _("Node"), _("Host:Port")); 657 _("ID#"), _("MAC"), _("Com"), _("Conmode"), _("Node"), _("Host:Port"));
393 658
… …
395 (*i)->print (); 660 (*i)->print ();
396 661
397 printf ("\n"); 662 printf ("\n");
398} 663}
399 664
400void 665configuration::configuration ()
401conf_node::print ()
402{ 666{
403 printf ("%4d fe:fd:80:00:0%1x:%02x %c %-8.8s %-10.10s %s%s%d\n", 667 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}
416 668
669 init ();
670}
671
672configuration::~configuration ()
673{
674 cleanup ();
675}
676
677

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