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Comparing gvpe/src/conf.C (file contents):
Revision 1.16 by pcg, Tue Oct 14 03:22:09 2003 UTC vs.
Revision 1.49 by pcg, Sun Aug 10 22:18:58 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#include <arpa/inet.h>
38#ifdef ENABLE_ICMP
39# ifdef HAVE_NETINET_IN_SYSTM_H
40# include <netinet/in_systm.h>
41# endif
42# ifdef HAVE_NETINET_IP_H
43# include <netinet/ip.h>
44# endif
45# include <netinet/ip_icmp.h>
46#endif
47 45
48#include <openssl/err.h> 46#include <openssl/err.h>
49#include <openssl/pem.h> 47#include <openssl/pem.h>
50#include <openssl/rsa.h> 48#include <openssl/rsa.h>
51#include <openssl/rand.h> 49#include <openssl/rand.h>
52 50#include <openssl/bn.h>
53#include "gettext.h"
54 51
55#include "conf.h" 52#include "conf.h"
56#include "slog.h" 53#include "slog.h"
57#include "util.h" 54#include "util.h"
58 55
59char *confbase; 56char *confbase;
60char *thisnode; 57char *thisnode;
61char *identname; 58char *identname;
62char *pidfilename;
63 59
64struct configuration conf; 60struct configuration conf;
65 61
66u8 best_protocol (u8 protset) 62u8 best_protocol (u8 protset)
67{ 63{
68 if (protset & PROT_IPv4 ) return PROT_IPv4; 64 if (protset & PROT_IPv4 ) return PROT_IPv4;
69 if (protset & PROT_ICMPv4) return PROT_ICMPv4; 65 if (protset & PROT_ICMPv4) return PROT_ICMPv4;
70 if (protset & PROT_UDPv4 ) return PROT_UDPv4; 66 if (protset & PROT_UDPv4 ) return PROT_UDPv4;
71 if (protset & PROT_TCPv4 ) return PROT_TCPv4; 67 if (protset & PROT_TCPv4 ) return PROT_TCPv4;
68 if (protset & PROT_DNSv4 ) return PROT_DNSv4;
72 69
73 return 0; 70 return 0;
74} 71}
75 72
76const char *strprotocol (u8 protocol) 73const char *strprotocol (u8 protocol)
77{ 74{
78 if (protocol & PROT_IPv4 ) return "rawip"; 75 if (protocol & PROT_IPv4 ) return "rawip";
79 if (protocol & PROT_ICMPv4) return "icmp"; 76 if (protocol & PROT_ICMPv4) return "icmp";
80 if (protocol & PROT_UDPv4 ) return "udp"; 77 if (protocol & PROT_UDPv4 ) return "udp";
81 if (protocol & PROT_TCPv4 ) return "tcp"; 78 if (protocol & PROT_TCPv4 ) return "tcp";
79 if (protocol & PROT_DNSv4 ) return "dns";
82 80
83 return "<unknown>"; 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;
84} 106}
85 107
86void 108void
87conf_node::print () 109conf_node::print ()
88{ 110{
89 printf ("%4d fe:fd:80:00:0%1x:%02x %c %-8.8s %-10.10s %s%s%d\n", 111 printf ("%4d fe:fd:80:00:0%1x:%02x %c %-8.8s %-10.10s %s%s%d\n",
90 id, 112 id,
91 id >> 8, id & 0xff, 113 id >> 8, id & 0xff,
92 compress ? 'Y' : 'N', 114 compress ? 'Y' : 'N',
93 connectmode == C_ONDEMAND ? "ondemand" : 115 connectmode == C_ONDEMAND ? "ondemand"
94 connectmode == C_NEVER ? "never" : 116 : connectmode == C_NEVER ? "never"
95 connectmode == C_ALWAYS ? "always" : "", 117 : connectmode == C_ALWAYS ? "always"
118 : connectmode == C_DISABLED ? "disabled"
119 : "",
96 nodename, 120 nodename,
97 hostname ? hostname : "", 121 hostname ? hostname : "",
98 hostname ? ":" : "", 122 hostname ? ":" : "",
99 hostname ? udp_port : 0 123 hostname ? udp_port : 0
100 ); 124 );
101} 125}
102 126
103conf_node::~conf_node () 127conf_node::~conf_node ()
104{ 128{
129#if 0
130 // does not work, because string pointers etc. are shared
131 // is not called, however
105 if (rsa_key) 132 if (rsa_key)
106 RSA_free (rsa_key); 133 RSA_free (rsa_key);
107 134
108 free (nodename); 135 free (nodename);
109 free (hostname); 136 free (hostname);
137 free (if_up_data);
138#if ENABLE_DNS
139 free (domain);
140 free (dns_hostname);
141#endif
142#endif
110} 143}
111 144
112void configuration::init () 145void configuration::init ()
113{ 146{
114 memset (this, 0, sizeof (*this)); 147 memset (this, 0, sizeof (*this));
115 148
149 mtu = DEFAULT_MTU;
116 rekey = DEFAULT_REKEY; 150 rekey = DEFAULT_REKEY;
117 keepalive = DEFAULT_KEEPALIVE; 151 keepalive = DEFAULT_KEEPALIVE;
118 llevel = L_INFO; 152 llevel = L_INFO;
119 ip_proto = IPPROTO_GRE; 153 ip_proto = IPPROTO_GRE;
120#if ENABLE_ICMP 154#if ENABLE_ICMP
121 icmp_type = ICMP_ECHOREPLY; 155 icmp_type = ICMP_ECHOREPLY;
122#endif 156#endif
123 157
124 default_node.udp_port = DEFAULT_UDPPORT; 158 default_node.udp_port = DEFAULT_UDPPORT;
125 default_node.tcp_port = DEFAULT_UDPPORT; 159 default_node.tcp_port = DEFAULT_UDPPORT; // ehrm
126 default_node.connectmode = conf_node::C_ALWAYS; 160 default_node.connectmode = conf_node::C_ALWAYS;
127 default_node.compress = true; 161 default_node.compress = true;
128 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");
129} 180}
130 181
131void configuration::cleanup() 182void configuration::cleanup()
132{ 183{
133 if (rsa_key) 184 if (rsa_key)
134 RSA_free (rsa_key); 185 RSA_free (rsa_key);
135 186
136 rsa_key = 0; 187 rsa_key = 0;
137 188
189 free (pidfilename); pidfilename = 0;
138 free (ifname); ifname = 0; 190 free (ifname); ifname = 0;
139#if ENABLE_HTTP_PROXY 191#if ENABLE_HTTP_PROXY
140 free (proxy_host); proxy_host = 0; 192 free (proxy_host); proxy_host = 0;
141 free (proxy_auth); proxy_auth = 0; 193 free (proxy_auth); proxy_auth = 0;
194#endif
195#if ENABLE_DNS
196 free (dns_forw_host); dns_forw_host = 0;
142#endif 197#endif
143} 198}
144 199
145void 200void
146configuration::clear_config () 201configuration::clear ()
147{ 202{
148 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)
149 delete *i; 204 delete *i;
150 205
151 nodes.clear (); 206 nodes.clear ();
152 207
153 cleanup (); 208 cleanup ();
154 init (); 209 init ();
155} 210}
156 211
157#define parse_bool(target,name,trueval,falseval) \ 212#define parse_bool(target,name,trueval,falseval) do { \
158 if (!strcmp (val, "yes")) target = trueval; \ 213 if (!strcmp (val, "yes")) target = trueval; \
159 else if (!strcmp (val, "no")) target = falseval; \ 214 else if (!strcmp (val, "no")) target = falseval; \
160 else if (!strcmp (val, "true")) target = trueval; \ 215 else if (!strcmp (val, "true")) target = trueval; \
161 else if (!strcmp (val, "false")) target = falseval; \ 216 else if (!strcmp (val, "false")) target = falseval; \
162 else if (!strcmp (val, "on")) target = trueval; \ 217 else if (!strcmp (val, "on")) target = trueval; \
163 else if (!strcmp (val, "off")) target = falseval; \ 218 else if (!strcmp (val, "off")) target = falseval; \
164 else \ 219 else \
165 slog (L_WARN, \ 220 return _("illegal boolean value, only 'yes|true|on' or 'no|false|off' allowed. (ignored)"); \
166 _("illegal value for '%s', only 'yes|true|on' or 'no|false|off' allowed, at '%s' line %d"), \ 221} while (0)
167 name, var, fname, lineno);
168 222
169void 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 > 1 && (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)
170{ 545{
171 char *fname; 546 char *fname;
172 FILE *f; 547 FILE *f;
173 548
174 clear_config (); 549 conf.clear ();
175 550
176 asprintf (&fname, "%s/vped.conf", confbase); 551 asprintf (&fname, "%s/gvpe.conf", confbase);
177 f = fopen (fname, "r"); 552 f = fopen (fname, "r");
178 553
179 if (f) 554 if (f)
180 { 555 {
181 char line[16384]; 556 char line[16384];
182 int lineno = 0; 557 int lineno = 0;
183 char *var, *val; 558 node = &conf.default_node;
184 conf_node *node = &default_node;
185 559
186 while (fgets (line, sizeof (line), f)) 560 while (fgets (line, sizeof (line), f))
187 { 561 {
188 lineno++; 562 lineno++;
189 563
190 { 564 const char *warn = parse_line (line);
191 char *end = line + strlen (line);
192 565
193 while (*end < ' ' && end >= line) 566 if (warn)
194 end--; 567 slog (L_WARN, _("%s, at '%s', line %d."), warn, fname, lineno);
195
196 *++end = 0;
197 }
198
199 char *tok = line;
200
201retry:
202 var = strtok (tok, "\t =");
203 tok = 0;
204
205 if (!var || !var[0])
206 continue; /* no tokens on this line */
207
208 if (var[0] == '#')
209 continue; /* comment: ignore */
210
211 val = strtok (NULL, "\t\n\r =");
212
213 if (!val || val[0] == '#')
214 {
215 slog (L_WARN,
216 _("no value for variable `%s', at '%s' line %d"),
217 var, fname, lineno);
218 break;
219 }
220
221 if (!strcmp (var, "on"))
222 {
223 if (!::thisnode
224 || (val[0] == '!' && strcmp (val + 1, ::thisnode))
225 || !strcmp (val, ::thisnode))
226 goto retry;
227
228 continue;
229 }
230
231 // truly global
232 if (!strcmp (var, "loglevel"))
233 {
234 loglevel l = string_to_loglevel (val);
235
236 if (l != L_NONE)
237 llevel = l;
238 else
239 slog (L_WARN, "'%s': %s, at '%s' line %d", val, UNKNOWN_LOGLEVEL, fname, line);
240 }
241 else if (!strcmp (var, "ip-proto"))
242 ip_proto = atoi (val);
243#if ENABLE_ICMP
244 //TODO: error message
245 else if (!strcmp (var, "icmp-type"))
246 icmp_type = atoi (val);
247#endif
248
249 // per config
250 else if (!strcmp (var, "node"))
251 {
252 default_node.id++;
253
254 node = new conf_node (default_node);
255
256 nodes.push_back (node);
257
258 node->nodename = strdup (val);
259
260 {
261 char *fname;
262 FILE *f;
263
264 asprintf (&fname, "%s/pubkey/%s", confbase, node->nodename);
265
266 f = fopen (fname, "r");
267 if (f)
268 {
269 node->rsa_key = RSA_new ();
270
271 if (!PEM_read_RSAPublicKey(f, &node->rsa_key, NULL, NULL))
272 {
273 ERR_load_RSA_strings (); ERR_load_PEM_strings ();
274 slog (L_ERR, _("unable to open public rsa key file '%s': %s"), fname, ERR_error_string (ERR_get_error (), 0));
275 exit (1);
276 }
277
278 RSA_blinding_on (node->rsa_key, 0);
279
280 fclose (f);
281 }
282 else
283 {
284 slog (need_keys ? L_ERR : L_NOTICE, _("unable to read public rsa key file '%s': %s"), fname, strerror (errno));
285
286 if (need_keys)
287 exit (1);
288 }
289
290 free (fname);
291 }
292
293 if (!::thisnode || !strcmp (node->nodename, ::thisnode))
294 thisnode = node;
295 }
296 else if (!strcmp (var, "private-key"))
297 prikeyfile = strdup (val);
298 else if (!strcmp (var, "ifpersist"))
299 {
300 parse_bool (ifpersist, "ifpersist", true, false);
301 }
302 else if (!strcmp (var, "ifname"))
303 ifname = strdup (val);
304 else if (!strcmp (var, "rekey"))
305 rekey = atoi (val);
306 else if (!strcmp (var, "keepalive"))
307 keepalive = atoi (val);
308 else if (!strcmp (var, "mtu"))
309 mtu = atoi (val);
310 else if (!strcmp (var, "if-up"))
311 script_if_up = strdup (val);
312 else if (!strcmp (var, "node-up"))
313 script_node_up = strdup (val);
314 else if (!strcmp (var, "node-down"))
315 script_node_down = strdup (val);
316#if ENABLE_HTTP_PROXY
317 else if (!strcmp (var, "http-proxy-host"))
318 proxy_host = strdup (val);
319 else if (!strcmp (var, "http-proxy-port"))
320 proxy_port = atoi (val);
321 else if (!strcmp (var, "http-proxy-auth"))
322 proxy_auth = (char *)base64_encode ((const u8 *)val, strlen (val));
323#endif
324
325 /* node-specific, non-defaultable */
326 else if (node != &default_node && !strcmp (var, "hostname"))
327 {
328 free (node->hostname);
329 node->hostname = strdup (val);
330 }
331
332 /* node-specific, defaultable */
333 else if (!strcmp (var, "udp-port"))
334 node->udp_port = atoi (val);
335 else if (!strcmp (var, "tcp-port"))
336 node->tcp_port = atoi (val);
337 else if (!strcmp (var, "router-priority"))
338 node->routerprio = atoi (val);
339 else if (!strcmp (var, "connect"))
340 {
341 if (!strcmp (val, "ondemand"))
342 node->connectmode = conf_node::C_ONDEMAND;
343 else if (!strcmp (val, "never"))
344 node->connectmode = conf_node::C_NEVER;
345 else if (!strcmp (val, "always"))
346 node->connectmode = conf_node::C_ALWAYS;
347 else if (!strcmp (val, "disabled"))
348 node->connectmode = conf_node::C_DISABLED;
349 else
350 slog (L_WARN,
351 _("illegal value for 'connectmode', use one of 'ondemand', 'never', 'always' or 'disabled', at '%s' line %d"),
352 var, fname, lineno);
353 }
354 else if (!strcmp (var, "inherit-tos"))
355 {
356 parse_bool (node->inherit_tos, "inherit-tos", true, false);
357 }
358 else if (!strcmp (var, "compress"))
359 {
360 parse_bool (node->compress, "compress", true, false);
361 }
362 // all these bool options really really cost a lot of executable size!
363 else if (!strcmp (var, "enable-tcp"))
364 {
365#if ENABLE_TCP
366 u8 v; parse_bool (v, "enable-tcp" , PROT_TCPv4, 0); node->protocols = (node->protocols & ~PROT_TCPv4) | v;
367#endif
368 }
369 else if (!strcmp (var, "enable-icmp"))
370 {
371#if ENABLE_ICMP
372 u8 v; parse_bool (v, "enable-icmp" , PROT_ICMPv4, 0); node->protocols = (node->protocols & ~PROT_ICMPv4) | v;
373#endif
374 }
375 else if (!strcmp (var, "enable-udp"))
376 {
377 u8 v; parse_bool (v, "enable-udp" , PROT_UDPv4, 0); node->protocols = (node->protocols & ~PROT_UDPv4) | v;
378 }
379 else if (!strcmp (var, "enable-rawip"))
380 {
381 u8 v; parse_bool (v, "enable-rawip", PROT_IPv4, 0); node->protocols = (node->protocols & ~PROT_IPv4 ) | v;
382 }
383
384 // unknown or misplaced
385 else
386 slog (L_WARN,
387 _("unknown or misplaced variable `%s', at '%s' line %d"),
388 var, fname, lineno);
389 } 568 }
390 569
391 fclose (f); 570 fclose (f);
571
572 parse_argv ();
392 } 573 }
393 else 574 else
394 { 575 {
395 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));
396 exit (1); 577 exit (EXIT_FAILURE);
397 } 578 }
398 579
399 free (fname); 580 free (fname);
400 581
401 fname = config_filename (prikeyfile, "hostkey"); 582 fname = conf.config_filename (conf.prikeyfile, "hostkey");
402 583
403 f = fopen (fname, "r"); 584 f = fopen (fname, "r");
404 if (f) 585 if (f)
405 { 586 {
406 rsa_key = RSA_new (); 587 conf.rsa_key = RSA_new ();
407 588
408 if (!PEM_read_RSAPrivateKey (f, &rsa_key, NULL, NULL)) 589 if (!PEM_read_RSAPrivateKey (f, &conf.rsa_key, NULL, NULL))
409 { 590 {
410 ERR_load_RSA_strings (); ERR_load_PEM_strings (); 591 ERR_load_RSA_strings (); ERR_load_PEM_strings ();
411 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));
412 exit (1); 593 exit (EXIT_FAILURE);
413 } 594 }
414 595
415 RSA_blinding_on (rsa_key, 0); 596 require (RSA_blinding_on (conf.rsa_key, 0));
416 597
417 fclose (f); 598 fclose (f);
418 } 599 }
419 else 600 else
420 { 601 {
421 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));
422 603
423 if (need_keys) 604 if (need_keys)
424 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);
425 } 615 }
426 616
427 free (fname); 617 free (fname);
618
619 for (configuration::node_vector::iterator i = conf.nodes.begin(); i != conf.nodes.end(); ++i)
620 (*i)->finalise ();
428} 621}
429 622
430char *configuration::config_filename (const char *name, const char *dflt) 623char *configuration::config_filename (const char *name, const char *dflt)
431{ 624{
432 char *fname; 625 char *fname;
… …
466 printf ("\n"); 659 printf ("\n");
467} 660}
468 661
469configuration::configuration () 662configuration::configuration ()
470{ 663{
664 asprintf (&confbase, "%s/gvpe", CONFDIR);
665
471 init (); 666 init ();
472} 667}
473 668
474configuration::~configuration () 669configuration::~configuration ()
475{ 670{

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