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Comparing gvpe/src/conf.C (file contents):
Revision 1.8 by pcg, Wed Apr 2 03:25:17 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) 64 if (protset & PROT_IPv4 ) return PROT_IPv4;
59 return PROT_IPv4; 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
61 return PROT_UDPv4; 70 return 0;
62} 71}
63 72
64const char *strprotocol (u8 protocol) 73const char *strprotocol (u8 protocol)
65{ 74{
66 if (protocol & PROT_IPv4 ) return "rawip"; 75 if (protocol & PROT_IPv4 ) return "rawip";
76 if (protocol & PROT_ICMPv4) return "icmp";
67 if (protocol & PROT_UDPv4) return "udp"; 77 if (protocol & PROT_UDPv4 ) return "udp";
78 if (protocol & PROT_TCPv4 ) return "tcp";
79 if (protocol & PROT_DNSv4 ) return "dns";
68 80
69 return "<unknown>"; 81 return "<unknown>";
70} 82}
71 83
72configuration::configuration () 84static bool
85match_list (const vector<const char *> &list, const char *str)
73{ 86{
74 init (); 87 for (vector<const char *>::const_iterator i = list.end (); i-- > list.begin (); )
75} 88 if ((*i)[0] == '*' && !(*i)[1])
89 return true;
90 else if (!strcmp (*i, str))
91 return true;
76 92
77configuration::~configuration () 93 return false;
94}
95
96bool
97conf_node::may_direct (struct conf_node *other)
78{ 98{
79 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
80} 143}
81 144
82void configuration::init () 145void configuration::init ()
83{ 146{
84 memset (this, 0, sizeof (*this)); 147 memset (this, 0, sizeof (*this));
85 148
149 mtu = DEFAULT_MTU;
86 rekey = DEFAULT_REKEY; 150 rekey = DEFAULT_REKEY;
87 keepalive = DEFAULT_KEEPALIVE; 151 keepalive = DEFAULT_KEEPALIVE;
88 llevel = L_INFO; 152 llevel = L_INFO;
89 ip_proto = IPPROTO_GRE; 153 ip_proto = IPPROTO_GRE;
154#if ENABLE_ICMP
155 icmp_type = ICMP_ECHOREPLY;
156#endif
90 157
91 default_node.udp_port = DEFAULT_UDPPORT; 158 default_node.udp_port = DEFAULT_UDPPORT;
92 default_node.tcp_port = DEFAULT_UDPPORT; 159 default_node.tcp_port = DEFAULT_UDPPORT; // ehrm
93 default_node.connectmode = conf_node::C_ALWAYS; 160 default_node.connectmode = conf_node::C_ALWAYS;
94 default_node.compress = true; 161 default_node.compress = true;
95 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");
96} 180}
97 181
98void configuration::cleanup() 182void configuration::cleanup()
99{ 183{
100 if (rsa_key) 184 if (rsa_key)
101 RSA_free (rsa_key); 185 RSA_free (rsa_key);
102 186
103 free (ifname);
104
105 rsa_key = 0; 187 rsa_key = 0;
106 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
107} 198}
108 199
109void 200void
110configuration::clear_config () 201configuration::clear ()
111{ 202{
112 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)
113 delete *i; 204 delete *i;
114 205
115 nodes.clear (); 206 nodes.clear ();
116 207
117 cleanup (); 208 cleanup ();
118 init (); 209 init ();
119} 210}
120 211
121#define parse_bool(target,name,trueval,falseval) \ 212#define parse_bool(target,name,trueval,falseval) do { \
122 if (!strcmp (val, "yes")) target = trueval; \ 213 if (!strcmp (val, "yes")) target = trueval; \
123 else if (!strcmp (val, "no")) target = falseval; \ 214 else if (!strcmp (val, "no")) target = falseval; \
124 else if (!strcmp (val, "true")) target = trueval; \ 215 else if (!strcmp (val, "true")) target = trueval; \
125 else if (!strcmp (val, "false")) target = falseval; \ 216 else if (!strcmp (val, "false")) target = falseval; \
126 else if (!strcmp (val, "on")) target = trueval; \ 217 else if (!strcmp (val, "on")) target = trueval; \
127 else if (!strcmp (val, "off")) target = falseval; \ 218 else if (!strcmp (val, "off")) target = falseval; \
128 else \ 219 else \
129 slog (L_WARN, \ 220 return _("illegal boolean value, only 'yes|true|on' or 'no|false|off' allowed. (ignored)"); \
130 _("illegal value for '%s', only 'yes|true|on' or 'no|false|off' allowed, at '%s' line %d"), \ 221} while (0)
131 name, var, fname, lineno);
132 222
133void 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)
134{ 545{
135 char *fname; 546 char *fname;
136 FILE *f; 547 FILE *f;
137 548
138 clear_config (); 549 conf.clear ();
139 550
140 asprintf (&fname, "%s/vped.conf", confbase); 551 asprintf (&fname, "%s/gvpe.conf", confbase);
141 f = fopen (fname, "r"); 552 f = fopen (fname, "r");
142 553
143 if (f) 554 if (f)
144 { 555 {
145 char line[16384]; 556 char line[16384];
146 int lineno = 0; 557 int lineno = 0;
147 char *var, *val; 558 node = &conf.default_node;
148 conf_node *node = &default_node;
149 559
150 while (fgets (line, sizeof (line), f)) 560 while (fgets (line, sizeof (line), f))
151 { 561 {
152 lineno++; 562 lineno++;
153 563
154 { 564 const char *warn = parse_line (line);
155 char *end = line + strlen (line);
156 565
157 while (*end < ' ' && end >= line) 566 if (warn)
158 end--; 567 slog (L_WARN, _("%s, at '%s', line %d."), warn, fname, lineno);
159
160 *++end = 0;
161 }
162
163 char *tok = line;
164
165retry:
166 var = strtok (tok, "\t =");
167 tok = 0;
168
169 if (!var || !var[0])
170 continue; /* no tokens on this line */
171
172 if (var[0] == '#')
173 continue; /* comment: ignore */
174
175 val = strtok (NULL, "\t\n\r =");
176
177 if (!val || val[0] == '#')
178 {
179 slog (L_WARN,
180 _("no value for variable `%s', at '%s' line %d"),
181 var, fname, lineno);
182 break;
183 }
184
185 if (!strcmp (var, "on"))
186 {
187 if (!::thisnode
188 || (val[0] == '!' && strcmp (val + 1, ::thisnode))
189 || !strcmp (val, ::thisnode))
190 goto retry;
191
192 continue;
193 }
194
195 // truly global
196 if (!strcmp (var, "loglevel"))
197 {
198 loglevel l = string_to_loglevel (val);
199
200 if (l != L_NONE)
201 llevel = l;
202 else
203 slog (L_WARN, "'%s': %s, at '%s' line %d", val, UNKNOWN_LOGLEVEL, fname, line);
204 }
205 else if (!strcmp (var, "ip-proto"))
206 ip_proto = atoi (val);
207
208 // per config
209 else if (!strcmp (var, "node"))
210 {
211 default_node.id++;
212
213 node = new conf_node (default_node);
214
215 nodes.push_back (node);
216
217 node->nodename = strdup (val);
218
219 {
220 char *fname;
221 FILE *f;
222
223 asprintf (&fname, "%s/pubkey/%s", confbase, node->nodename);
224
225 f = fopen (fname, "r");
226 if (f)
227 {
228 node->rsa_key = RSA_new ();
229
230 if (!PEM_read_RSAPublicKey(f, &node->rsa_key, NULL, NULL))
231 {
232 ERR_load_RSA_strings (); ERR_load_PEM_strings ();
233 slog (L_ERR, _("unable to open public rsa key file '%s': %s"), fname, ERR_error_string (ERR_get_error (), 0));
234 exit (1);
235 }
236
237 RSA_blinding_on (node->rsa_key, 0);
238
239 fclose (f);
240 }
241 else
242 {
243 slog (need_keys ? L_ERR : L_NOTICE, _("unable to read public rsa key file '%s': %s"), fname, strerror (errno));
244
245 if (need_keys)
246 exit (1);
247 }
248
249 free (fname);
250 }
251
252 if (!::thisnode || !strcmp (node->nodename, ::thisnode))
253 thisnode = node;
254 }
255 else if (!strcmp (var, "private-key"))
256 prikeyfile = strdup (val);
257 else if (!strcmp (var, "ifpersist"))
258 {
259 parse_bool (ifpersist, "ifpersist", true, false);
260 }
261 else if (!strcmp (var, "ifname"))
262 ifname = strdup (val);
263 else if (!strcmp (var, "rekey"))
264 rekey = atoi (val);
265 else if (!strcmp (var, "keepalive"))
266 keepalive = atoi (val);
267 else if (!strcmp (var, "mtu"))
268 mtu = atoi (val);
269 else if (!strcmp (var, "if-up"))
270 script_if_up = strdup (val);
271 else if (!strcmp (var, "node-up"))
272 script_node_up = strdup (val);
273 else if (!strcmp (var, "node-down"))
274 script_node_down = strdup (val);
275
276 /* node-specific, non-defaultable */
277 else if (node != &default_node && !strcmp (var, "hostname"))
278 {
279 free (node->hostname);
280 node->hostname = strdup (val);
281 }
282
283 /* node-specific, defaultable */
284 else if (!strcmp (var, "udp-port"))
285 node->udp_port = atoi (val);
286 else if (!strcmp (var, "tcp-port"))
287 node->tcp_port = atoi (val);
288 else if (!strcmp (var, "router-priority"))
289 node->routerprio = atoi (val);
290 else if (!strcmp (var, "connect"))
291 {
292 if (!strcmp (val, "ondemand"))
293 node->connectmode = conf_node::C_ONDEMAND;
294 else if (!strcmp (val, "never"))
295 node->connectmode = conf_node::C_NEVER;
296 else if (!strcmp (val, "always"))
297 node->connectmode = conf_node::C_ALWAYS;
298 else if (!strcmp (val, "disabled"))
299 node->connectmode = conf_node::C_DISABLED;
300 else
301 slog (L_WARN,
302 _("illegal value for 'connectmode', use one of 'ondemand', 'never', 'always' or 'disabled', at '%s' line %d"),
303 var, fname, lineno);
304 }
305 else if (!strcmp (var, "inherit-tos"))
306 {
307 parse_bool (node->inherit_tos, "inherit-tos", true, false);
308 }
309 else if (!strcmp (var, "compress"))
310 {
311 parse_bool (node->compress, "compress", true, false);
312 }
313 // all these bool options really really cost a lot of executable size!
314 else if (!strcmp (var, "enable-tcp"))
315 {
316 u8 v; parse_bool (v, "enable-tcp" , PROT_TCPv4, 0); node->protocols = (node->protocols & ~PROT_TCPv4) | v;
317 }
318 else if (!strcmp (var, "enable-udp"))
319 {
320 u8 v; parse_bool (v, "enable-udp" , PROT_UDPv4, 0); node->protocols = (node->protocols & ~PROT_UDPv4) | v;
321 }
322 else if (!strcmp (var, "enable-rawip"))
323 {
324 u8 v; parse_bool (v, "enable-rawip", PROT_IPv4, 0); node->protocols = (node->protocols & ~PROT_IPv4 ) | v;
325 }
326
327 // unknown or misplaced
328 else
329 {
330 slog (L_WARN,
331 _("unknown or misplaced variable `%s', at '%s' line %d"),
332 var, fname, lineno);
333 }
334 } 568 }
335 569
336 fclose (f); 570 fclose (f);
571
572 parse_argv ();
337 } 573 }
338 else 574 else
339 { 575 {
340 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));
341 exit (1); 577 exit (EXIT_FAILURE);
342 } 578 }
343 579
344 free (fname); 580 free (fname);
345 581
346 fname = config_filename (prikeyfile, "hostkey"); 582 fname = conf.config_filename (conf.prikeyfile, "hostkey");
347 583
348 f = fopen (fname, "r"); 584 f = fopen (fname, "r");
349 if (f) 585 if (f)
350 { 586 {
351 rsa_key = RSA_new (); 587 conf.rsa_key = RSA_new ();
352 588
353 if (!PEM_read_RSAPrivateKey (f, &rsa_key, NULL, NULL)) 589 if (!PEM_read_RSAPrivateKey (f, &conf.rsa_key, NULL, NULL))
354 { 590 {
355 ERR_load_RSA_strings (); ERR_load_PEM_strings (); 591 ERR_load_RSA_strings (); ERR_load_PEM_strings ();
356 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));
357 exit (1); 593 exit (EXIT_FAILURE);
358 } 594 }
359 595
360 RSA_blinding_on (rsa_key, 0); 596 require (RSA_blinding_on (conf.rsa_key, 0));
361 597
362 fclose (f); 598 fclose (f);
363 } 599 }
364 else 600 else
365 { 601 {
366 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));
367 603
368 if (need_keys) 604 if (need_keys)
369 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);
370 } 615 }
371 616
372 free (fname); 617 free (fname);
618
619 for (configuration::node_vector::iterator i = conf.nodes.begin(); i != conf.nodes.end(); ++i)
620 (*i)->finalise ();
373} 621}
374 622
375char *configuration::config_filename (const char *name, const char *dflt) 623char *configuration::config_filename (const char *name, const char *dflt)
376{ 624{
377 char *fname; 625 char *fname;
… …
397 printf (_("MTU: %d\n"), mtu); 645 printf (_("MTU: %d\n"), mtu);
398 printf (_("rekeying interval: %d\n"), rekey); 646 printf (_("rekeying interval: %d\n"), rekey);
399 printf (_("keepalive interval: %d\n"), keepalive); 647 printf (_("keepalive interval: %d\n"), keepalive);
400 printf (_("interface: %s\n"), ifname); 648 printf (_("interface: %s\n"), ifname);
401 printf (_("primary rsa key: %s\n"), prikeyfile ? prikeyfile : "<default>"); 649 printf (_("primary rsa key: %s\n"), prikeyfile ? prikeyfile : "<default>");
402 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);
403 printf ("\n"); 651 printf ("\n");
404 652
405 printf ("%4s %-17s %s %-8.8s %-10.10s %s\n", 653 printf ("%4s %-17s %s %-8.8s %-10.10s %s\n",
406 _("ID#"), _("MAC"), _("Com"), _("Conmode"), _("Node"), _("Host:Port")); 654 _("ID#"), _("MAC"), _("Com"), _("Conmode"), _("Node"), _("Host:Port"));
407 655
… …
409 (*i)->print (); 657 (*i)->print ();
410 658
411 printf ("\n"); 659 printf ("\n");
412} 660}
413 661
414void 662configuration::configuration ()
415conf_node::print ()
416{ 663{
417 printf ("%4d fe:fd:80:00:0%1x:%02x %c %-8.8s %-10.10s %s%s%d\n", 664 asprintf (&confbase, "%s/gvpe", CONFDIR);
418 id,
419 id >> 8, id & 0xff,
420 compress ? 'Y' : 'N',
421 connectmode == C_ONDEMAND ? "ondemand" :
422 connectmode == C_NEVER ? "never" :
423 connectmode == C_ALWAYS ? "always" : "",
424 nodename,
425 hostname ? hostname : "",
426 hostname ? ":" : "",
427 hostname ? udp_port : 0
428 );
429}
430 665
666 init ();
667}
668
669configuration::~configuration ()
670{
671 cleanup ();
672}
673
674

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