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Comparing gvpe/src/conf.C (file contents):
Revision 1.10 by pcg, Wed Apr 2 21:02:25 2003 UTC vs.
Revision 1.47 by pcg, Sun Aug 10 02:49:21 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
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;
65 if (protset & PROT_ICMPv4) return PROT_ICMPv4;
59 if (protset & PROT_UDPv4) return PROT_UDPv4; 66 if (protset & PROT_UDPv4 ) return PROT_UDPv4;
60 if (protset & PROT_TCPv4) return PROT_TCPv4; 67 if (protset & PROT_TCPv4 ) return PROT_TCPv4;
68 if (protset & PROT_DNSv4 ) return PROT_DNSv4;
61 69
62 return 0; 70 return 0;
63} 71}
64 72
65const char *strprotocol (u8 protocol) 73const char *strprotocol (u8 protocol)
66{ 74{
67 if (protocol & PROT_IPv4 ) return "rawip"; 75 if (protocol & PROT_IPv4 ) return "rawip";
76 if (protocol & PROT_ICMPv4) return "icmp";
68 if (protocol & PROT_UDPv4) return "udp"; 77 if (protocol & PROT_UDPv4 ) return "udp";
69 if (protocol & PROT_TCPv4) return "tcp"; 78 if (protocol & PROT_TCPv4 ) return "tcp";
79 if (protocol & PROT_DNSv4 ) return "dns";
70 80
71 return "<unknown>"; 81 return "<unknown>";
72} 82}
73 83
74configuration::configuration () 84static bool
85match_list (const vector<const char *> &list, const char *str)
75{ 86{
76 init (); 87 for (vector<const char *>::const_iterator i = list.end (); i-- > list.begin (); )
77} 88 if ((*i)[0] == '*' && !(*i)[1])
89 return true;
90 else if (!strcmp (*i, str))
91 return true;
78 92
79configuration::~configuration () 93 return false;
94}
95
96bool
97conf_node::may_direct (struct conf_node *other)
80{ 98{
81 cleanup (); 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
82} 143}
83 144
84void configuration::init () 145void configuration::init ()
85{ 146{
86 memset (this, 0, sizeof (*this)); 147 memset (this, 0, sizeof (*this));
87 148
149 mtu = DEFAULT_MTU;
88 rekey = DEFAULT_REKEY; 150 rekey = DEFAULT_REKEY;
89 keepalive = DEFAULT_KEEPALIVE; 151 keepalive = DEFAULT_KEEPALIVE;
90 llevel = L_INFO; 152 llevel = L_INFO;
91 ip_proto = IPPROTO_GRE; 153 ip_proto = IPPROTO_GRE;
154#if ENABLE_ICMP
155 icmp_type = ICMP_ECHOREPLY;
156#endif
92 157
93 default_node.udp_port = DEFAULT_UDPPORT; 158 default_node.udp_port = DEFAULT_UDPPORT;
94 default_node.tcp_port = DEFAULT_UDPPORT; 159 default_node.tcp_port = DEFAULT_UDPPORT; // ehrm
95 default_node.connectmode = conf_node::C_ALWAYS; 160 default_node.connectmode = conf_node::C_ALWAYS;
96 default_node.compress = true; 161 default_node.compress = true;
97 default_node.protocols = PROT_UDPv4; 162 default_node.protocols = 0;
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");
98} 180}
99 181
100void configuration::cleanup() 182void configuration::cleanup()
101{ 183{
102 if (rsa_key) 184 if (rsa_key)
103 RSA_free (rsa_key); 185 RSA_free (rsa_key);
104 186
105 free (ifname);
106
107 rsa_key = 0; 187 rsa_key = 0;
108 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
109} 198}
110 199
111void 200void
112configuration::clear_config () 201configuration::clear ()
113{ 202{
114 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)
115 delete *i; 204 delete *i;
116 205
117 nodes.clear (); 206 nodes.clear ();
118 207
119 cleanup (); 208 cleanup ();
120 init (); 209 init ();
121} 210}
122 211
123#define parse_bool(target,name,trueval,falseval) \ 212#define parse_bool(target,name,trueval,falseval) do { \
124 if (!strcmp (val, "yes")) target = trueval; \ 213 if (!strcmp (val, "yes")) target = trueval; \
125 else if (!strcmp (val, "no")) target = falseval; \ 214 else if (!strcmp (val, "no")) target = falseval; \
126 else if (!strcmp (val, "true")) target = trueval; \ 215 else if (!strcmp (val, "true")) target = trueval; \
127 else if (!strcmp (val, "false")) target = falseval; \ 216 else if (!strcmp (val, "false")) target = falseval; \
128 else if (!strcmp (val, "on")) target = trueval; \ 217 else if (!strcmp (val, "on")) target = trueval; \
129 else if (!strcmp (val, "off")) target = falseval; \ 218 else if (!strcmp (val, "off")) target = falseval; \
130 else \ 219 else \
131 slog (L_WARN, \ 220 return _("illegal boolean value, only 'yes|true|on' or 'no|false|off' allowed. (ignored)"); \
132 _("illegal value for '%s', only 'yes|true|on' or 'no|false|off' allowed, at '%s' line %d"), \ 221} while (0)
133 name, var, fname, lineno);
134 222
135void 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)
136{ 545{
137 char *fname; 546 char *fname;
138 FILE *f; 547 FILE *f;
139 548
140 clear_config (); 549 conf.clear ();
141 550
142 asprintf (&fname, "%s/vped.conf", confbase); 551 asprintf (&fname, "%s/gvpe.conf", confbase);
143 f = fopen (fname, "r"); 552 f = fopen (fname, "r");
144 553
145 if (f) 554 if (f)
146 { 555 {
147 char line[16384]; 556 char line[16384];
148 int lineno = 0; 557 int lineno = 0;
149 char *var, *val; 558 node = &conf.default_node;
150 conf_node *node = &default_node;
151 559
152 while (fgets (line, sizeof (line), f)) 560 while (fgets (line, sizeof (line), f))
153 { 561 {
154 lineno++; 562 lineno++;
155 563
156 { 564 const char *warn = parse_line (line);
157 char *end = line + strlen (line);
158 565
159 while (*end < ' ' && end >= line) 566 if (warn)
160 end--; 567 slog (L_WARN, _("%s, at '%s', line %d."), warn, fname, lineno);
161
162 *++end = 0;
163 }
164
165 char *tok = line;
166
167retry:
168 var = strtok (tok, "\t =");
169 tok = 0;
170
171 if (!var || !var[0])
172 continue; /* no tokens on this line */
173
174 if (var[0] == '#')
175 continue; /* comment: ignore */
176
177 val = strtok (NULL, "\t\n\r =");
178
179 if (!val || val[0] == '#')
180 {
181 slog (L_WARN,
182 _("no value for variable `%s', at '%s' line %d"),
183 var, fname, lineno);
184 break;
185 }
186
187 if (!strcmp (var, "on"))
188 {
189 if (!::thisnode
190 || (val[0] == '!' && strcmp (val + 1, ::thisnode))
191 || !strcmp (val, ::thisnode))
192 goto retry;
193
194 continue;
195 }
196
197 // truly global
198 if (!strcmp (var, "loglevel"))
199 {
200 loglevel l = string_to_loglevel (val);
201
202 if (l != L_NONE)
203 llevel = l;
204 else
205 slog (L_WARN, "'%s': %s, at '%s' line %d", val, UNKNOWN_LOGLEVEL, fname, line);
206 }
207 else if (!strcmp (var, "ip-proto"))
208 ip_proto = atoi (val);
209
210 // per config
211 else if (!strcmp (var, "node"))
212 {
213 default_node.id++;
214
215 node = new conf_node (default_node);
216
217 nodes.push_back (node);
218
219 node->nodename = strdup (val);
220
221 {
222 char *fname;
223 FILE *f;
224
225 asprintf (&fname, "%s/pubkey/%s", confbase, node->nodename);
226
227 f = fopen (fname, "r");
228 if (f)
229 {
230 node->rsa_key = RSA_new ();
231
232 if (!PEM_read_RSAPublicKey(f, &node->rsa_key, NULL, NULL))
233 {
234 ERR_load_RSA_strings (); ERR_load_PEM_strings ();
235 slog (L_ERR, _("unable to open public rsa key file '%s': %s"), fname, ERR_error_string (ERR_get_error (), 0));
236 exit (1);
237 }
238
239 RSA_blinding_on (node->rsa_key, 0);
240
241 fclose (f);
242 }
243 else
244 {
245 slog (need_keys ? L_ERR : L_NOTICE, _("unable to read public rsa key file '%s': %s"), fname, strerror (errno));
246
247 if (need_keys)
248 exit (1);
249 }
250
251 free (fname);
252 }
253
254 if (!::thisnode || !strcmp (node->nodename, ::thisnode))
255 thisnode = node;
256 }
257 else if (!strcmp (var, "private-key"))
258 prikeyfile = strdup (val);
259 else if (!strcmp (var, "ifpersist"))
260 {
261 parse_bool (ifpersist, "ifpersist", true, false);
262 }
263 else if (!strcmp (var, "ifname"))
264 ifname = strdup (val);
265 else if (!strcmp (var, "rekey"))
266 rekey = atoi (val);
267 else if (!strcmp (var, "keepalive"))
268 keepalive = atoi (val);
269 else if (!strcmp (var, "mtu"))
270 mtu = atoi (val);
271 else if (!strcmp (var, "if-up"))
272 script_if_up = strdup (val);
273 else if (!strcmp (var, "node-up"))
274 script_node_up = strdup (val);
275 else if (!strcmp (var, "node-down"))
276 script_node_down = strdup (val);
277
278 /* node-specific, non-defaultable */
279 else if (node != &default_node && !strcmp (var, "hostname"))
280 {
281 free (node->hostname);
282 node->hostname = strdup (val);
283 }
284
285 /* node-specific, defaultable */
286 else if (!strcmp (var, "udp-port"))
287 node->udp_port = atoi (val);
288 else if (!strcmp (var, "tcp-port"))
289 node->tcp_port = atoi (val);
290 else if (!strcmp (var, "router-priority"))
291 node->routerprio = atoi (val);
292 else if (!strcmp (var, "connect"))
293 {
294 if (!strcmp (val, "ondemand"))
295 node->connectmode = conf_node::C_ONDEMAND;
296 else if (!strcmp (val, "never"))
297 node->connectmode = conf_node::C_NEVER;
298 else if (!strcmp (val, "always"))
299 node->connectmode = conf_node::C_ALWAYS;
300 else if (!strcmp (val, "disabled"))
301 node->connectmode = conf_node::C_DISABLED;
302 else
303 slog (L_WARN,
304 _("illegal value for 'connectmode', use one of 'ondemand', 'never', 'always' or 'disabled', at '%s' line %d"),
305 var, fname, lineno);
306 }
307 else if (!strcmp (var, "inherit-tos"))
308 {
309 parse_bool (node->inherit_tos, "inherit-tos", true, false);
310 }
311 else if (!strcmp (var, "compress"))
312 {
313 parse_bool (node->compress, "compress", true, false);
314 }
315 // all these bool options really really cost a lot of executable size!
316 else if (!strcmp (var, "enable-tcp"))
317 {
318 u8 v; parse_bool (v, "enable-tcp" , PROT_TCPv4, 0); node->protocols = (node->protocols & ~PROT_TCPv4) | v;
319 }
320 else if (!strcmp (var, "enable-udp"))
321 {
322 u8 v; parse_bool (v, "enable-udp" , PROT_UDPv4, 0); node->protocols = (node->protocols & ~PROT_UDPv4) | v;
323 }
324 else if (!strcmp (var, "enable-rawip"))
325 {
326 u8 v; parse_bool (v, "enable-rawip", PROT_IPv4, 0); node->protocols = (node->protocols & ~PROT_IPv4 ) | v;
327 }
328
329 // unknown or misplaced
330 else
331 {
332 slog (L_WARN,
333 _("unknown or misplaced variable `%s', at '%s' line %d"),
334 var, fname, lineno);
335 }
336 } 568 }
337 569
338 fclose (f); 570 fclose (f);
571
572 parse_argv ();
339 } 573 }
340 else 574 else
341 { 575 {
342 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));
343 exit (1); 577 exit (EXIT_FAILURE);
344 } 578 }
345 579
346 free (fname); 580 free (fname);
347 581
348 fname = config_filename (prikeyfile, "hostkey"); 582 fname = conf.config_filename (conf.prikeyfile, "hostkey");
349 583
350 f = fopen (fname, "r"); 584 f = fopen (fname, "r");
351 if (f) 585 if (f)
352 { 586 {
353 rsa_key = RSA_new (); 587 conf.rsa_key = RSA_new ();
354 588
355 if (!PEM_read_RSAPrivateKey (f, &rsa_key, NULL, NULL)) 589 if (!PEM_read_RSAPrivateKey (f, &conf.rsa_key, NULL, NULL))
356 { 590 {
357 ERR_load_RSA_strings (); ERR_load_PEM_strings (); 591 ERR_load_RSA_strings (); ERR_load_PEM_strings ();
358 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));
359 exit (1); 593 exit (EXIT_FAILURE);
360 } 594 }
361 595
362 RSA_blinding_on (rsa_key, 0); 596 require (RSA_blinding_on (conf.rsa_key, 0));
363 597
364 fclose (f); 598 fclose (f);
365 } 599 }
366 else 600 else
367 { 601 {
368 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));
369 603
370 if (need_keys) 604 if (need_keys)
371 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);
372 } 615 }
373 616
374 free (fname); 617 free (fname);
618
619 for (configuration::node_vector::iterator i = conf.nodes.begin(); i != conf.nodes.end(); ++i)
620 (*i)->finalise ();
375} 621}
376 622
377char *configuration::config_filename (const char *name, const char *dflt) 623char *configuration::config_filename (const char *name, const char *dflt)
378{ 624{
379 char *fname; 625 char *fname;
… …
399 printf (_("MTU: %d\n"), mtu); 645 printf (_("MTU: %d\n"), mtu);
400 printf (_("rekeying interval: %d\n"), rekey); 646 printf (_("rekeying interval: %d\n"), rekey);
401 printf (_("keepalive interval: %d\n"), keepalive); 647 printf (_("keepalive interval: %d\n"), keepalive);
402 printf (_("interface: %s\n"), ifname); 648 printf (_("interface: %s\n"), ifname);
403 printf (_("primary rsa key: %s\n"), prikeyfile ? prikeyfile : "<default>"); 649 printf (_("primary rsa key: %s\n"), prikeyfile ? prikeyfile : "<default>");
404 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);
405 printf ("\n"); 651 printf ("\n");
406 652
407 printf ("%4s %-17s %s %-8.8s %-10.10s %s\n", 653 printf ("%4s %-17s %s %-8.8s %-10.10s %s\n",
408 _("ID#"), _("MAC"), _("Com"), _("Conmode"), _("Node"), _("Host:Port")); 654 _("ID#"), _("MAC"), _("Com"), _("Conmode"), _("Node"), _("Host:Port"));
409 655
… …
411 (*i)->print (); 657 (*i)->print ();
412 658
413 printf ("\n"); 659 printf ("\n");
414} 660}
415 661
416void 662configuration::configuration ()
417conf_node::print ()
418{ 663{
419 printf ("%4d fe:fd:80:00:0%1x:%02x %c %-8.8s %-10.10s %s%s%d\n", 664 asprintf (&confbase, "%s/gvpe", CONFDIR);
420 id,
421 id >> 8, id & 0xff,
422 compress ? 'Y' : 'N',
423 connectmode == C_ONDEMAND ? "ondemand" :
424 connectmode == C_NEVER ? "never" :
425 connectmode == C_ALWAYS ? "always" : "",
426 nodename,
427 hostname ? hostname : "",
428 hostname ? ":" : "",
429 hostname ? udp_port : 0
430 );
431}
432 665
666 init ();
667}
668
669configuration::~configuration ()
670{
671 cleanup ();
672}
673
674

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