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Comparing gvpe/src/conf.C (file contents):
Revision 1.6 by pcg, Fri Mar 28 16:14:40 2003 UTC vs.
Revision 1.52 by root, Tue Feb 8 23:11:35 2011 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
63best_protocol (u8 protset)
57{ 64{
58 init (); 65 if (protset & PROT_IPv4 ) return PROT_IPv4;
59} 66 if (protset & PROT_ICMPv4) return PROT_ICMPv4;
67 if (protset & PROT_UDPv4 ) return PROT_UDPv4;
68 if (protset & PROT_TCPv4 ) return PROT_TCPv4;
69 if (protset & PROT_DNSv4 ) return PROT_DNSv4;
60 70
61configuration::~configuration () 71 return 0;
62{
63 cleanup ();
64} 72}
65 73
74const char *
75strprotocol (u8 protocol)
76{
77 if (protocol & PROT_IPv4 ) return "rawip";
78 if (protocol & PROT_ICMPv4) return "icmp";
79 if (protocol & PROT_UDPv4 ) return "udp";
80 if (protocol & PROT_TCPv4 ) return "tcp";
81 if (protocol & PROT_DNSv4 ) return "dns";
82
83 return "<unknown>";
84}
85
86static bool
87match_list (const vector<const char *> &list, const char *str)
88{
89 for (vector<const char *>::const_iterator i = list.end (); i-- > list.begin (); )
90 if ((*i)[0] == '*' && !(*i)[1])
91 return true;
92 else if (!strcmp (*i, str))
93 return true;
94
95 return false;
96}
97
98bool
99conf_node::may_direct (struct conf_node *other)
100{
101 if (match_list (allow_direct, other->nodename))
102 return true;
103
104 if (match_list (deny_direct, other->nodename))
105 return false;
106
107 return true;
108}
109
110void
111conf_node::print ()
112{
113 printf ("%4d fe:fd:80:00:0%1x:%02x %c %-8.8s %-10.10s %s%s%d\n",
114 id,
115 id >> 8, id & 0xff,
116 compress ? 'Y' : 'N',
117 connectmode == C_ONDEMAND ? "ondemand"
118 : connectmode == C_NEVER ? "never"
119 : connectmode == C_ALWAYS ? "always"
120 : connectmode == C_DISABLED ? "disabled"
121 : "",
122 nodename,
123 hostname ? hostname : "",
124 hostname ? ":" : "",
125 hostname ? udp_port : 0
126 );
127}
128
129conf_node::~conf_node ()
130{
131#if 0
132 // does not work, because string pointers etc. are shared
133 // is not called, however
134 if (rsa_key)
135 RSA_free (rsa_key);
136
137 free (nodename);
138 free (hostname);
139 free (if_up_data);
140#if ENABLE_DNS
141 free (domain);
142 free (dns_hostname);
143#endif
144#endif
145}
146
147void
66void configuration::init () 148configuration::init ()
67{ 149{
68 memset (this, 0, sizeof (*this)); 150 memset (this, 0, sizeof (*this));
69 151
152 mtu = DEFAULT_MTU;
153 nfmark = 0;
70 rekey = DEFAULT_REKEY; 154 rekey = DEFAULT_REKEY;
71 keepalive = DEFAULT_KEEPALIVE; 155 keepalive = DEFAULT_KEEPALIVE;
72 llevel = L_INFO; 156 llevel = L_INFO;
73 ip_proto = IPPROTO_GRE; 157 ip_proto = IPPROTO_GRE;
158#if ENABLE_ICMP
159 icmp_type = ICMP_ECHOREPLY;
160#endif
74 161
75 default_node.udp_port = DEFAULT_UDPPORT; 162 default_node.udp_port = DEFAULT_UDPPORT;
163 default_node.tcp_port = DEFAULT_UDPPORT; // ehrm
76 default_node.connectmode = conf_node::C_ALWAYS; 164 default_node.connectmode = conf_node::C_ALWAYS;
77 default_node.compress = true; 165 default_node.compress = true;
78 default_node.protocols = PROT_UDPv4; 166 default_node.protocols = 0;
79} 167 default_node.max_retry = DEFAULT_MAX_RETRY;
168 default_node.max_ttl = DEFAULT_MAX_TTL;
169 default_node.max_queue = DEFAULT_MAX_QUEUE;
170 default_node.if_up_data = strdup ("");
80 171
172#if ENABLE_DNS
173 default_node.dns_port = 0; // default is 0 == client
174
175 dns_forw_host = strdup ("127.0.0.1");
176 dns_forw_port = 53;
177 dns_timeout_factor = DEFAULT_DNS_TIMEOUT_FACTOR;
178 dns_send_interval = DEFAULT_DNS_SEND_INTERVAL;
179 dns_overlap_factor = DEFAULT_DNS_OVERLAP_FACTOR;
180 dns_max_outstanding = DEFAULT_DNS_MAX_OUTSTANDING;
181#endif
182
183 conf.pidfilename = strdup (LOCALSTATEDIR "/run/gvpe.pid");
184}
185
186void
81void configuration::cleanup() 187configuration::cleanup ()
82{ 188{
83 if (rsa_key) 189 if (rsa_key)
84 RSA_free (rsa_key); 190 RSA_free (rsa_key);
85 191
86 free (ifname);
87
88 rsa_key = 0; 192 rsa_key = 0;
89 ifname = 0; 193
194 free (pidfilename); pidfilename = 0;
195 free (ifname); ifname = 0;
196#if ENABLE_HTTP_PROXY
197 free (proxy_host); proxy_host = 0;
198 free (proxy_auth); proxy_auth = 0;
199#endif
200#if ENABLE_DNS
201 free (dns_forw_host); dns_forw_host = 0;
202#endif
203 free (script_if_up); script_if_up = 0;
204 free (script_node_up); script_node_up = 0;
205 free (script_node_change); script_node_change = 0;
206 free (script_node_down); script_node_down = 0;
90} 207}
91 208
92void 209void
93configuration::clear_config () 210configuration::clear ()
94{ 211{
95 for (configuration::node_vector::iterator i = nodes.begin(); i != nodes.end(); ++i) 212 for (configuration::node_vector::iterator i = nodes.begin(); i != nodes.end(); ++i)
96 delete *i; 213 delete *i;
97 214
98 nodes.clear (); 215 nodes.clear ();
99 216
100 cleanup (); 217 cleanup ();
101 init (); 218 init ();
102} 219}
103 220
104#define parse_bool(target,name,trueval,falseval) \ 221#define parse_bool(target,name,trueval,falseval) do { \
105 if (!strcmp (val, "yes")) target = trueval; \ 222 if (!strcmp (val, "yes")) target = trueval; \
106 else if (!strcmp (val, "no")) target = falseval; \ 223 else if (!strcmp (val, "no")) target = falseval; \
107 else if (!strcmp (val, "true")) target = trueval; \ 224 else if (!strcmp (val, "true")) target = trueval; \
108 else if (!strcmp (val, "false")) target = falseval; \ 225 else if (!strcmp (val, "false")) target = falseval; \
109 else if (!strcmp (val, "on")) target = trueval; \ 226 else if (!strcmp (val, "on")) target = trueval; \
110 else if (!strcmp (val, "off")) target = falseval; \ 227 else if (!strcmp (val, "off")) target = falseval; \
111 else \ 228 else \
112 slog (L_WARN, \ 229 return _("illegal boolean value, only 'yes|true|on' or 'no|false|off' allowed. (ignored)"); \
113 _("illegal value for '%s', only 'yes|true|on' or 'no|false|off' allowed, at '%s' line %d"), \ 230} while (0)
114 name, var, fname, lineno);
115 231
116void configuration::read_config (bool need_keys) 232const char *
233configuration_parser::parse_line (char *line)
234{
235 {
236 char *end = line + strlen (line);
237
238 while (*end < ' ' && end >= line)
239 end--;
240
241 *++end = 0;
242 }
243
244 char *tok = line;
245 const char *var = strtok (tok, "\t =");
246 tok = 0;
247
248 if (!var || !var[0])
249 return 0; /* no tokens on this line */
250
251 if (var[0] == '#')
252 return 0; /* comment: ignore */
253
254 char *val = strtok (NULL, "\t\n\r =");
255
256 if (!val || val[0] == '#')
257 return _("no value given for variable. (ignored)");
258
259 if (!strcmp (var, "on"))
260 {
261 if (!::thisnode
262 || (val[0] == '!' && strcmp (val + 1, ::thisnode))
263 || !strcmp (val, ::thisnode))
264 return parse_line (strtok (NULL, "\n\r"));
265 else
266 return 0;
267 }
268
269 // truly global
270 if (!strcmp (var, "loglevel"))
271 {
272 loglevel l = string_to_loglevel (val);
273
274 if (l == L_NONE)
275 return _("unknown loglevel. (skipping)");
276 }
277 else if (!strcmp (var, "ip-proto"))
278 conf.ip_proto = atoi (val);
279 else if (!strcmp (var, "icmp-type"))
280 {
281#if ENABLE_ICMP
282 conf.icmp_type = atoi (val);
283#endif
284 }
285
286 // per config
287 else if (!strcmp (var, "node"))
288 {
289 parse_argv ();
290
291 conf.default_node.id++;
292 node = new conf_node (conf.default_node);
293 conf.nodes.push_back (node);
294 node->nodename = strdup (val);
295
296 {
297 char *fname;
298 FILE *f;
299
300 asprintf (&fname, "%s/pubkey/%s", confbase, node->nodename);
301
302 f = fopen (fname, "r");
303 if (f)
304 {
305 node->rsa_key = RSA_new ();
306
307 if (!PEM_read_RSAPublicKey(f, &node->rsa_key, NULL, NULL))
308 {
309 ERR_load_RSA_strings (); ERR_load_PEM_strings ();
310 slog (L_ERR, _("unable to open public rsa key file '%s': %s"), fname, ERR_error_string (ERR_get_error (), 0));
311 exit (EXIT_FAILURE);
312 }
313
314 require (RSA_blinding_on (node->rsa_key, 0));
315
316 fclose (f);
317 }
318 else
319 {
320 slog (need_keys ? L_ERR : L_NOTICE, _("unable to read public rsa key file '%s': %s"), fname, strerror (errno));
321
322 if (need_keys)
323 exit (EXIT_FAILURE);
324 }
325
326 free (fname);
327 }
328
329 if (::thisnode && !strcmp (node->nodename, ::thisnode))
330 conf.thisnode = node;
331 }
332 else if (!strcmp (var, "private-key"))
333 free (conf.prikeyfile), conf.prikeyfile = strdup (val);
334 else if (!strcmp (var, "ifpersist"))
335 parse_bool (conf.ifpersist, "ifpersist", true, false);
336 else if (!strcmp (var, "ifname"))
337 free (conf.ifname), conf.ifname = strdup (val);
338 else if (!strcmp (var, "rekey"))
339 conf.rekey = atoi (val);
340 else if (!strcmp (var, "keepalive"))
341 conf.keepalive = atoi (val);
342 else if (!strcmp (var, "mtu"))
343 conf.mtu = atoi (val);
344 else if (!strcmp (var, "nfmark"))
345 conf.nfmark = atoi (val);
346 else if (!strcmp (var, "if-up"))
347 free (conf.script_if_up), conf.script_if_up = strdup (val);
348 else if (!strcmp (var, "node-up"))
349 free (conf.script_node_up), conf.script_node_up = strdup (val);
350 else if (!strcmp (var, "node-change"))
351 free (conf.script_node_change), conf.script_node_change = strdup (val);
352 else if (!strcmp (var, "node-down"))
353 free (conf.script_node_down), conf.script_node_down = strdup (val);
354 else if (!strcmp (var, "pid-file"))
355 free (conf.pidfilename), conf.pidfilename = strdup (val);
356 else if (!strcmp (var, "dns-forw-host"))
357 {
358#if ENABLE_DNS
359 free (conf.dns_forw_host), conf.dns_forw_host = strdup (val);
360#endif
361 }
362 else if (!strcmp (var, "dns-forw-port"))
363 {
364#if ENABLE_DNS
365 conf.dns_forw_port = atoi (val);
366#endif
367 }
368 else if (!strcmp (var, "dns-timeout-factor"))
369 {
370#if ENABLE_DNS
371 conf.dns_timeout_factor = atof (val);
372#endif
373 }
374 else if (!strcmp (var, "dns-send-interval"))
375 {
376#if ENABLE_DNS
377 conf.dns_send_interval = atoi (val);
378#endif
379 }
380 else if (!strcmp (var, "dns-overlap-factor"))
381 {
382#if ENABLE_DNS
383 conf.dns_overlap_factor = atof (val);
384#endif
385 }
386 else if (!strcmp (var, "dns-max-outstanding"))
387 {
388#if ENABLE_DNS
389 conf.dns_max_outstanding = atoi (val);
390#endif
391 }
392 else if (!strcmp (var, "http-proxy-host"))
393 {
394#if ENABLE_HTTP_PROXY
395 free (conf.proxy_host), conf.proxy_host = strdup (val);
396#endif
397 }
398 else if (!strcmp (var, "http-proxy-port"))
399 {
400#if ENABLE_HTTP_PROXY
401 conf.proxy_port = atoi (val);
402#endif
403 }
404 else if (!strcmp (var, "http-proxy-auth"))
405 {
406#if ENABLE_HTTP_PROXY
407 conf.proxy_auth = (char *)base64_encode ((const u8 *)val, strlen (val));
408#endif
409 }
410
411 /* node-specific, non-defaultable */
412 else if (node != &conf.default_node && !strcmp (var, "hostname"))
413 free (node->hostname), node->hostname = strdup (val);
414
415 /* node-specific, defaultable */
416 else if (!strcmp (var, "udp-port"))
417 node->udp_port = atoi (val);
418 else if (!strcmp (var, "tcp-port"))
419 node->tcp_port = atoi (val);
420 else if (!strcmp (var, "dns-hostname"))
421 {
422#if ENABLE_DNS
423 free (node->dns_hostname), node->dns_hostname = strdup (val);
424#endif
425 }
426 else if (!strcmp (var, "dns-port"))
427 {
428#if ENABLE_DNS
429 node->dns_port = atoi (val);
430#endif
431 }
432 else if (!strcmp (var, "dns-domain"))
433 {
434#if ENABLE_DNS
435 free (node->domain), node->domain = strdup (val);
436#endif
437 }
438 else if (!strcmp (var, "if-up-data"))
439 free (node->if_up_data), node->if_up_data = strdup (val);
440 else if (!strcmp (var, "router-priority"))
441 node->routerprio = atoi (val);
442 else if (!strcmp (var, "max-retry"))
443 node->max_retry = atoi (val);
444 else if (!strcmp (var, "connect"))
445 {
446 if (!strcmp (val, "ondemand"))
447 node->connectmode = conf_node::C_ONDEMAND;
448 else if (!strcmp (val, "never"))
449 node->connectmode = conf_node::C_NEVER;
450 else if (!strcmp (val, "always"))
451 node->connectmode = conf_node::C_ALWAYS;
452 else if (!strcmp (val, "disabled"))
453 node->connectmode = conf_node::C_DISABLED;
454 else
455 return _("illegal value for 'connectmode', use one of 'ondemand', 'never', 'always' or 'disabled'. (ignored)");
456 }
457 else if (!strcmp (var, "inherit-tos"))
458 parse_bool (node->inherit_tos, "inherit-tos", true, false);
459 else if (!strcmp (var, "compress"))
460 parse_bool (node->compress, "compress", true, false);
461 // all these bool options really really cost a lot of executable size!
462 else if (!strcmp (var, "enable-tcp"))
463 {
464#if ENABLE_TCP
465 u8 v; parse_bool (v, "enable-tcp" , PROT_TCPv4, 0); node->protocols = (node->protocols & ~PROT_TCPv4) | v;
466#endif
467 }
468 else if (!strcmp (var, "enable-icmp"))
469 {
470#if ENABLE_ICMP
471 u8 v; parse_bool (v, "enable-icmp" , PROT_ICMPv4, 0); node->protocols = (node->protocols & ~PROT_ICMPv4) | v;
472#endif
473 }
474 else if (!strcmp (var, "enable-dns"))
475 {
476#if ENABLE_DNS
477 u8 v; parse_bool (v, "enable-dns" , PROT_DNSv4, 0); node->protocols = (node->protocols & ~PROT_DNSv4) | v;
478#endif
479 }
480 else if (!strcmp (var, "enable-udp"))
481 {
482 u8 v; parse_bool (v, "enable-udp" , PROT_UDPv4, 0); node->protocols = (node->protocols & ~PROT_UDPv4) | v;
483 }
484 else if (!strcmp (var, "enable-rawip"))
485 {
486 u8 v; parse_bool (v, "enable-rawip", PROT_IPv4, 0); node->protocols = (node->protocols & ~PROT_IPv4 ) | v;
487 }
488 else if (!strcmp (var, "allow-direct"))
489 node->allow_direct.push_back (strdup (val));
490 else if (!strcmp (var, "deny-direct"))
491 node->deny_direct.push_back (strdup (val));
492 else if (!strcmp (var, "max-ttl"))
493 node->max_ttl = atof (val);
494 else if (!strcmp (var, "max-queue"))
495 node->max_queue = atoi (val);
496
497 // unknown or misplaced
498 else
499 return _("unknown configuration directive. (ignored)");
500
501 return 0;
502}
503
504void
505conf_node::finalise ()
506{
507 if (max_queue < 1)
508 {
509 slog (L_WARN, _("%s: max-queue value invalid, setting it to 1."), nodename);
510 max_queue = 1;
511 }
512
513 if (routerprio > 1 && (connectmode != C_ALWAYS && connectmode != C_DISABLED))
514 {
515 //slog (L_WARN, _("%s: has non-zero router-priority but either 'never' or 'ondemand' as connectmode, setting it to 'always'."), nodename);
516 connectmode = C_ALWAYS;
517 }
518}
519
520void
521configuration_parser::parse_argv ()
522{
523 for (int i = 0; i < argc; ++i)
524 {
525 char *v = argv [i];
526
527 if (!*v)
528 continue;
529
530 char *enode = v;
531
532 while (*enode != '.' && *enode > ' ' && *enode != '=' && *enode)
533 enode++;
534
535 if (*enode != '.')
536 enode = 0;
537
538 char *wnode = node == &conf.default_node
539 ? 0
540 : node->nodename;
541
542 if ((!wnode && !enode)
543 || (wnode && enode && !strncmp (wnode, v, enode - v)))
544 {
545 const char *warn = parse_line (enode ? enode + 1 : v);
546
547 if (warn)
548 slog (L_WARN, _("%s, while parsing command line option '%s'."), warn, v);
549
550 *v = 0;
551 }
552 }
553}
554
555configuration_parser::configuration_parser (configuration &conf,
556 bool need_keys,
557 int argc,
558 char **argv)
559: conf (conf),need_keys (need_keys), argc (argc), argv (argv)
117{ 560{
118 char *fname; 561 char *fname;
119 FILE *f; 562 FILE *f;
120 563
121 clear_config (); 564 conf.clear ();
122 565
123 asprintf (&fname, "%s/vped.conf", confbase); 566 asprintf (&fname, "%s/gvpe.conf", confbase);
124 f = fopen (fname, "r"); 567 f = fopen (fname, "r");
125 568
126 if (f) 569 if (f)
127 { 570 {
128 char line[16384]; 571 char line[16384];
129 int lineno = 0; 572 int lineno = 0;
130 char *var, *val; 573 node = &conf.default_node;
131 conf_node *node = &default_node;
132 574
133 while (fgets (line, sizeof (line), f)) 575 while (fgets (line, sizeof (line), f))
134 { 576 {
135 lineno++; 577 lineno++;
136 578
137 { 579 const char *warn = parse_line (line);
138 char *end = line + strlen (line);
139 580
140 while (*end < ' ' && end >= line) 581 if (warn)
141 end--; 582 slog (L_WARN, _("%s, at '%s', line %d."), warn, fname, lineno);
142
143 *++end = 0;
144 }
145
146 char *tok = line;
147
148retry:
149 var = strtok (tok, "\t =");
150 tok = 0;
151
152 if (!var || !var[0])
153 continue; /* no tokens on this line */
154
155 if (var[0] == '#')
156 continue; /* comment: ignore */
157
158 val = strtok (NULL, "\t\n\r =");
159
160 if (!val || val[0] == '#')
161 {
162 slog (L_WARN,
163 _("no value for variable `%s', at '%s' line %d"),
164 var, fname, lineno);
165 break;
166 }
167
168 if (!strcmp (var, "on"))
169 {
170 if (!::thisnode
171 || (val[0] == '!' && strcmp (val + 1, ::thisnode))
172 || !strcmp (val, ::thisnode))
173 goto retry;
174
175 continue;
176 }
177
178 // truly global
179 if (!strcmp (var, "loglevel"))
180 {
181 loglevel l = string_to_loglevel (val);
182
183 if (l != L_NONE)
184 llevel = l;
185 else
186 slog (L_WARN, "'%s': %s, at '%s' line %d", val, UNKNOWN_LOGLEVEL, fname, line);
187 }
188 else if (!strcmp (var, "ip-proto"))
189 ip_proto = atoi (val);
190
191 // per config
192 else if (!strcmp (var, "node"))
193 {
194 default_node.id++;
195
196 node = new conf_node (default_node);
197
198 nodes.push_back (node);
199
200 node->nodename = strdup (val);
201
202 {
203 char *fname;
204 FILE *f;
205
206 asprintf (&fname, "%s/pubkey/%s", confbase, node->nodename);
207
208 f = fopen (fname, "r");
209 if (f)
210 {
211 node->rsa_key = RSA_new ();
212
213 if (!PEM_read_RSAPublicKey(f, &node->rsa_key, NULL, NULL))
214 {
215 ERR_load_RSA_strings (); ERR_load_PEM_strings ();
216 slog (L_ERR, _("unable to open public rsa key file '%s': %s"), fname, ERR_error_string (ERR_get_error (), 0));
217 exit (1);
218 }
219
220 RSA_blinding_on (node->rsa_key, 0);
221
222 fclose (f);
223 }
224 else
225 {
226 slog (need_keys ? L_ERR : L_NOTICE, _("unable to read public rsa key file '%s': %s"), fname, strerror (errno));
227
228 if (need_keys)
229 exit (1);
230 }
231
232 free (fname);
233 }
234
235 if (!::thisnode || !strcmp (node->nodename, ::thisnode))
236 thisnode = node;
237 }
238 else if (!strcmp (var, "private-key"))
239 prikeyfile = strdup (val);
240 else if (!strcmp (var, "ifpersist"))
241 {
242 parse_bool (ifpersist, "ifpersist", true, false);
243 }
244 else if (!strcmp (var, "ifname"))
245 ifname = strdup (val);
246 else if (!strcmp (var, "rekey"))
247 rekey = atoi (val);
248 else if (!strcmp (var, "keepalive"))
249 keepalive = atoi (val);
250 else if (!strcmp (var, "mtu"))
251 mtu = atoi (val);
252 else if (!strcmp (var, "if-up"))
253 script_if_up = strdup (val);
254 else if (!strcmp (var, "node-up"))
255 script_node_up = strdup (val);
256 else if (!strcmp (var, "node-down"))
257 script_node_down = strdup (val);
258
259 /* node-specific, non-defaultable */
260 else if (node != &default_node && !strcmp (var, "hostname"))
261 {
262 free (node->hostname);
263 node->hostname = strdup (val);
264 }
265
266 /* node-specific, defaultable */
267 else if (!strcmp (var, "udp-port"))
268 node->udp_port = atoi (val);
269 else if (!strcmp (var, "router-priority"))
270 node->routerprio = atoi (val);
271 else if (!strcmp (var, "connect"))
272 {
273 if (!strcmp (val, "ondemand"))
274 node->connectmode = conf_node::C_ONDEMAND;
275 else if (!strcmp (val, "never"))
276 node->connectmode = conf_node::C_NEVER;
277 else if (!strcmp (val, "always"))
278 node->connectmode = conf_node::C_ALWAYS;
279 else if (!strcmp (val, "disabled"))
280 node->connectmode = conf_node::C_DISABLED;
281 else
282 slog (L_WARN,
283 _("illegal value for 'connectmode', use one of 'ondemand', 'never', 'always' or 'disabled', at '%s' line %d"),
284 var, fname, lineno);
285 }
286 else if (!strcmp (var, "inherit-tos"))
287 {
288 parse_bool (node->inherit_tos, "inherit-tos", true, false);
289 }
290 else if (!strcmp (var, "compress"))
291 {
292 parse_bool (node->compress, "compress", true, false);
293 }
294 // all these bool options really really cost a lot of executable size!
295 else if (!strcmp (var, "enable-udp"))
296 {
297 u8 v; parse_bool (v, "enable-udp" , PROT_UDPv4, 0); node->protocols = (node->protocols & ~PROT_UDPv4) | v;
298 }
299 else if (!strcmp (var, "enable-rawip"))
300 {
301 u8 v; parse_bool (v, "enable-rawip", PROT_IPv4, 0); node->protocols = (node->protocols & ~PROT_IPv4 ) | v;
302 }
303
304 // unknown or misplaced
305 else
306 {
307 slog (L_WARN,
308 _("unknown or misplaced variable `%s', at '%s' line %d"),
309 var, fname, lineno);
310 }
311 } 583 }
312 584
313 fclose (f); 585 fclose (f);
586
587 parse_argv ();
314 } 588 }
315 else 589 else
316 { 590 {
317 slog (L_ERR, _("unable to read config file '%s': %s"), fname, strerror (errno)); 591 slog (L_ERR, _("unable to read config file '%s': %s"), fname, strerror (errno));
318 exit (1); 592 exit (EXIT_FAILURE);
319 } 593 }
320 594
321 free (fname); 595 free (fname);
322 596
323 fname = config_filename (prikeyfile, "hostkey"); 597 fname = conf.config_filename (conf.prikeyfile, "hostkey");
324 598
325 f = fopen (fname, "r"); 599 f = fopen (fname, "r");
326 if (f) 600 if (f)
327 { 601 {
328 rsa_key = RSA_new (); 602 conf.rsa_key = RSA_new ();
329 603
330 if (!PEM_read_RSAPrivateKey (f, &rsa_key, NULL, NULL)) 604 if (!PEM_read_RSAPrivateKey (f, &conf.rsa_key, NULL, NULL))
331 { 605 {
332 ERR_load_RSA_strings (); ERR_load_PEM_strings (); 606 ERR_load_RSA_strings (); ERR_load_PEM_strings ();
333 slog (L_ERR, _("unable to read private rsa key file '%s': %s"), fname, ERR_error_string (ERR_get_error (), 0)); 607 slog (L_ERR, _("unable to read private rsa key file '%s': %s"), fname, ERR_error_string (ERR_get_error (), 0));
334 exit (1); 608 exit (EXIT_FAILURE);
335 } 609 }
336 610
337 RSA_blinding_on (rsa_key, 0); 611 require (RSA_blinding_on (conf.rsa_key, 0));
338 612
339 fclose (f); 613 fclose (f);
340 } 614 }
341 else 615 else
342 { 616 {
343 slog (need_keys ? L_ERR : L_NOTICE, _("unable to open private rsa key file '%s': %s"), fname, strerror (errno)); 617 slog (need_keys ? L_ERR : L_NOTICE, _("unable to open private rsa key file '%s': %s"), fname, strerror (errno));
344 618
345 if (need_keys) 619 if (need_keys)
346 exit (1); 620 exit (EXIT_FAILURE);
621 }
622
623 if (need_keys && ::thisnode
624 && conf.rsa_key && conf.thisnode && conf.thisnode->rsa_key)
625 if (BN_cmp (conf.rsa_key->n, conf.thisnode->rsa_key->n) != 0
626 || BN_cmp (conf.rsa_key->e, conf.thisnode->rsa_key->e) != 0)
627 {
628 slog (L_NOTICE, _("private hostkey and public node key mismatch: is '%s' the correct node?"), ::thisnode);
629 exit (EXIT_FAILURE);
347 } 630 }
348 631
349 free (fname); 632 free (fname);
350}
351 633
634 for (configuration::node_vector::iterator i = conf.nodes.begin(); i != conf.nodes.end(); ++i)
635 (*i)->finalise ();
636}
637
638char *
352char *configuration::config_filename (const char *name, const char *dflt) 639configuration::config_filename (const char *name, const char *dflt)
353{ 640{
354 char *fname; 641 char *fname;
355 642
356 asprintf (&fname, name ? name : dflt, ::thisnode); 643 asprintf (&fname, name ? name : dflt, ::thisnode);
357 644
… …
374 printf (_("MTU: %d\n"), mtu); 661 printf (_("MTU: %d\n"), mtu);
375 printf (_("rekeying interval: %d\n"), rekey); 662 printf (_("rekeying interval: %d\n"), rekey);
376 printf (_("keepalive interval: %d\n"), keepalive); 663 printf (_("keepalive interval: %d\n"), keepalive);
377 printf (_("interface: %s\n"), ifname); 664 printf (_("interface: %s\n"), ifname);
378 printf (_("primary rsa key: %s\n"), prikeyfile ? prikeyfile : "<default>"); 665 printf (_("primary rsa key: %s\n"), prikeyfile ? prikeyfile : "<default>");
379 printf (_("rsa key size: %d\n"), rsa_key ? RSA_size (rsa_key) : -1); 666 printf (_("rsa key size: %d\n"), rsa_key ? RSA_size (rsa_key) * 8 : -1);
380 printf ("\n"); 667 printf ("\n");
381 668
382 printf ("%4s %-17s %s %-8.8s %-10.10s %s\n", 669 printf ("%4s %-17s %s %-8.8s %-10.10s %s\n",
383 _("ID#"), _("MAC"), _("Com"), _("Conmode"), _("Node"), _("Host:Port")); 670 _("ID#"), _("MAC"), _("Com"), _("Conmode"), _("Node"), _("Host:Port"));
384 671
… …
386 (*i)->print (); 673 (*i)->print ();
387 674
388 printf ("\n"); 675 printf ("\n");
389} 676}
390 677
391void 678configuration::configuration ()
392conf_node::print ()
393{ 679{
394 printf ("%4d fe:fd:80:00:0%1x:%02x %c %-8.8s %-10.10s %s%s%d\n", 680 asprintf (&confbase, "%s/gvpe", CONFDIR);
395 id,
396 id >> 8, id & 0xff,
397 compress ? 'Y' : 'N',
398 connectmode == C_ONDEMAND ? "ondemand" :
399 connectmode == C_NEVER ? "never" :
400 connectmode == C_ALWAYS ? "always" : "",
401 nodename,
402 hostname ? hostname : "",
403 hostname ? ":" : "",
404 hostname ? udp_port : 0
405 );
406}
407 681
682 init ();
683}
684
685configuration::~configuration ()
686{
687 cleanup ();
688}
689

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