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Comparing gvpe/src/conf.C (file contents):
Revision 1.19 by pcg, Thu Oct 16 20:35:14 2003 UTC vs.
Revision 1.35 by pcg, Fri Mar 18 01:53:05 2005 UTC

1/* 1/*
2 conf.c -- configuration code 2 conf.c -- configuration code
3 Copyright (C) 2003 Marc Lehmann <pcg@goof.com> 3 Copyright (C) 2003-2005 Marc Lehmann <gvpe@schmorp.de>
4 4
5 This file is part of GVPE.
6
5 This program is free software; you can redistribute it and/or modify 7 GVPE is free software; you can redistribute it and/or modify
6 it under the terms of the GNU General Public License as published by 8 it under the terms of the GNU General Public License as published by
7 the Free Software Foundation; either version 2 of the License, or 9 the Free Software Foundation; either version 2 of the License, or
8 (at your option) any later version. 10 (at your option) any later version.
9 11
10 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,
11 but WITHOUT ANY WARRANTY; without even the implied warranty of 13 but WITHOUT ANY WARRANTY; without even the implied warranty of
12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13 GNU General Public License for more details. 15 GNU General Public License for more details.
14 16
15 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
16 along with this program; if not, write to the Free Software 18 along with gvpe; if not, write to the Free Software
17 Foundation, Inc. 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA 19 Foundation, Inc. 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
18*/ 20*/
19 21
20#include "config.h" 22#include "config.h"
21 23
… …
33 35
34#include <openssl/err.h> 36#include <openssl/err.h>
35#include <openssl/pem.h> 37#include <openssl/pem.h>
36#include <openssl/rsa.h> 38#include <openssl/rsa.h>
37#include <openssl/rand.h> 39#include <openssl/rand.h>
38 40#include <openssl/bn.h>
39#include "gettext.h"
40 41
41#include "conf.h" 42#include "conf.h"
42#include "slog.h" 43#include "slog.h"
43#include "util.h" 44#include "util.h"
44 45
45char *confbase; 46char *confbase;
46char *thisnode; 47char *thisnode;
47char *identname; 48char *identname;
48char *pidfilename;
49 49
50struct configuration conf; 50struct configuration conf;
51 51
52u8 best_protocol (u8 protset) 52u8 best_protocol (u8 protset)
53{ 53{
54 if (protset & PROT_IPv4 ) return PROT_IPv4; 54 if (protset & PROT_IPv4 ) return PROT_IPv4;
55 if (protset & PROT_ICMPv4) return PROT_ICMPv4; 55 if (protset & PROT_ICMPv4) return PROT_ICMPv4;
56 if (protset & PROT_UDPv4 ) return PROT_UDPv4; 56 if (protset & PROT_UDPv4 ) return PROT_UDPv4;
57 if (protset & PROT_TCPv4 ) return PROT_TCPv4; 57 if (protset & PROT_TCPv4 ) return PROT_TCPv4;
58 if (protset & PROT_DNSv4 ) return PROT_DNSv4;
58 59
59 return 0; 60 return 0;
60} 61}
61 62
62const char *strprotocol (u8 protocol) 63const char *strprotocol (u8 protocol)
63{ 64{
64 if (protocol & PROT_IPv4 ) return "rawip"; 65 if (protocol & PROT_IPv4 ) return "rawip";
65 if (protocol & PROT_ICMPv4) return "icmp"; 66 if (protocol & PROT_ICMPv4) return "icmp";
66 if (protocol & PROT_UDPv4 ) return "udp"; 67 if (protocol & PROT_UDPv4 ) return "udp";
67 if (protocol & PROT_TCPv4 ) return "tcp"; 68 if (protocol & PROT_TCPv4 ) return "tcp";
69 if (protocol & PROT_DNSv4 ) return "dns";
68 70
69 return "<unknown>"; 71 return "<unknown>";
70} 72}
71 73
72void 74void
… …
91 if (rsa_key) 93 if (rsa_key)
92 RSA_free (rsa_key); 94 RSA_free (rsa_key);
93 95
94 free (nodename); 96 free (nodename);
95 free (hostname); 97 free (hostname);
98#if ENABLE_DNS
99 free (domain);
100 free (dns_hostname);
101#endif
96} 102}
97 103
98void configuration::init () 104void configuration::init ()
99{ 105{
100 memset (this, 0, sizeof (*this)); 106 memset (this, 0, sizeof (*this));
… …
107#if ENABLE_ICMP 113#if ENABLE_ICMP
108 icmp_type = ICMP_ECHOREPLY; 114 icmp_type = ICMP_ECHOREPLY;
109#endif 115#endif
110 116
111 default_node.udp_port = DEFAULT_UDPPORT; 117 default_node.udp_port = DEFAULT_UDPPORT;
112 default_node.tcp_port = DEFAULT_UDPPORT; 118 default_node.tcp_port = DEFAULT_UDPPORT; // ehrm
113 default_node.connectmode = conf_node::C_ALWAYS; 119 default_node.connectmode = conf_node::C_ALWAYS;
114 default_node.compress = true; 120 default_node.compress = true;
115 default_node.protocols = PROT_UDPv4; 121 default_node.protocols = 0;
122 default_node.max_retry = DEFAULT_MAX_RETRY;
123
124#if ENABLE_DNS
125 default_node.dns_port = 0; // default is 0 == client
126 dns_forw_host = strdup ("127.0.0.1");
127 dns_forw_port = 53;
128#endif
129
130 conf.pidfilename = strdup (LOCALSTATEDIR "/run/gvpe.pid");
116} 131}
117 132
118void configuration::cleanup() 133void configuration::cleanup()
119{ 134{
120 if (rsa_key) 135 if (rsa_key)
121 RSA_free (rsa_key); 136 RSA_free (rsa_key);
122 137
123 rsa_key = 0; 138 rsa_key = 0;
124 139
140 free (pidfilename); pidfilename = 0;
125 free (ifname); ifname = 0; 141 free (ifname); ifname = 0;
126#if ENABLE_HTTP_PROXY 142#if ENABLE_HTTP_PROXY
127 free (proxy_host); proxy_host = 0; 143 free (proxy_host); proxy_host = 0;
128 free (proxy_auth); proxy_auth = 0; 144 free (proxy_auth); proxy_auth = 0;
145#endif
146#if ENABLE_DNS
147 free (dns_forw_host); dns_forw_host = 0;
129#endif 148#endif
130} 149}
131 150
132void 151void
133configuration::clear_config () 152configuration::clear_config ()
… …
158 char *fname; 177 char *fname;
159 FILE *f; 178 FILE *f;
160 179
161 clear_config (); 180 clear_config ();
162 181
163 asprintf (&fname, "%s/vped.conf", confbase); 182 asprintf (&fname, "%s/gvpe.conf", confbase);
164 f = fopen (fname, "r"); 183 f = fopen (fname, "r");
165 184
166 if (f) 185 if (f)
167 { 186 {
168 char line[16384]; 187 char line[16384];
… …
225 else 244 else
226 slog (L_WARN, "'%s': %s, at '%s' line %d", val, UNKNOWN_LOGLEVEL, fname, line); 245 slog (L_WARN, "'%s': %s, at '%s' line %d", val, UNKNOWN_LOGLEVEL, fname, line);
227 } 246 }
228 else if (!strcmp (var, "ip-proto")) 247 else if (!strcmp (var, "ip-proto"))
229 ip_proto = atoi (val); 248 ip_proto = atoi (val);
249 else if (!strcmp (var, "icmp-type"))
250 {
230#if ENABLE_ICMP 251#if ENABLE_ICMP
231 //TODO: error message
232 else if (!strcmp (var, "icmp-type"))
233 icmp_type = atoi (val); 252 icmp_type = atoi (val);
234#endif 253#endif
254 }
235 255
236 // per config 256 // per config
237 else if (!strcmp (var, "node")) 257 else if (!strcmp (var, "node"))
238 { 258 {
239 default_node.id++; 259 default_node.id++;
… …
257 277
258 if (!PEM_read_RSAPublicKey(f, &node->rsa_key, NULL, NULL)) 278 if (!PEM_read_RSAPublicKey(f, &node->rsa_key, NULL, NULL))
259 { 279 {
260 ERR_load_RSA_strings (); ERR_load_PEM_strings (); 280 ERR_load_RSA_strings (); ERR_load_PEM_strings ();
261 slog (L_ERR, _("unable to open public rsa key file '%s': %s"), fname, ERR_error_string (ERR_get_error (), 0)); 281 slog (L_ERR, _("unable to open public rsa key file '%s': %s"), fname, ERR_error_string (ERR_get_error (), 0));
262 exit (1); 282 exit (EXIT_FAILURE);
263 } 283 }
264 284
265 RSA_blinding_on (node->rsa_key, 0); 285 require (RSA_blinding_on (node->rsa_key, 0));
266 286
267 fclose (f); 287 fclose (f);
268 } 288 }
269 else 289 else
270 { 290 {
271 slog (need_keys ? L_ERR : L_NOTICE, _("unable to read public rsa key file '%s': %s"), fname, strerror (errno)); 291 slog (need_keys ? L_ERR : L_NOTICE, _("unable to read public rsa key file '%s': %s"), fname, strerror (errno));
272 292
273 if (need_keys) 293 if (need_keys)
274 exit (1); 294 exit (EXIT_FAILURE);
275 } 295 }
276 296
277 free (fname); 297 free (fname);
278 } 298 }
279 299
280 if (!::thisnode || !strcmp (node->nodename, ::thisnode)) 300 if (::thisnode && !strcmp (node->nodename, ::thisnode))
281 thisnode = node; 301 thisnode = node;
282 } 302 }
283 else if (!strcmp (var, "private-key")) 303 else if (!strcmp (var, "private-key"))
284 prikeyfile = strdup (val); 304 free (prikeyfile), prikeyfile = strdup (val);
285 else if (!strcmp (var, "ifpersist")) 305 else if (!strcmp (var, "ifpersist"))
286 { 306 {
287 parse_bool (ifpersist, "ifpersist", true, false); 307 parse_bool (ifpersist, "ifpersist", true, false);
288 } 308 }
289 else if (!strcmp (var, "ifname")) 309 else if (!strcmp (var, "ifname"))
290 ifname = strdup (val); 310 free (ifname), ifname = strdup (val);
291 else if (!strcmp (var, "rekey")) 311 else if (!strcmp (var, "rekey"))
292 rekey = atoi (val); 312 rekey = atoi (val);
293 else if (!strcmp (var, "keepalive")) 313 else if (!strcmp (var, "keepalive"))
294 keepalive = atoi (val); 314 keepalive = atoi (val);
295 else if (!strcmp (var, "mtu")) 315 else if (!strcmp (var, "mtu"))
296 mtu = atoi (val); 316 mtu = atoi (val);
297 else if (!strcmp (var, "if-up")) 317 else if (!strcmp (var, "if-up"))
298 script_if_up = strdup (val); 318 free (script_if_up), script_if_up = strdup (val);
299 else if (!strcmp (var, "node-up")) 319 else if (!strcmp (var, "node-up"))
300 script_node_up = strdup (val); 320 free (script_node_up), script_node_up = strdup (val);
301 else if (!strcmp (var, "node-down")) 321 else if (!strcmp (var, "node-down"))
302 script_node_down = strdup (val); 322 free (script_node_down), script_node_down = strdup (val);
323 else if (!strcmp (var, "pid-file"))
324 free (pidfilename), pidfilename = strdup (val);
325 else if (!strcmp (var, "dns-forw-host"))
326 {
327#if ENABLE_DNS
328 free (dns_forw_host), dns_forw_host = strdup (val);
329#endif
330 }
331 else if (!strcmp (var, "dns-forw-port"))
332 {
333#if ENABLE_DNS
334 dns_forw_port = atoi (val);
335#endif
336 }
337 else if (!strcmp (var, "http-proxy-host"))
338 {
303#if ENABLE_HTTP_PROXY 339#if ENABLE_HTTP_PROXY
304 else if (!strcmp (var, "http-proxy-host"))
305 proxy_host = strdup (val); 340 free (proxy_host), proxy_host = strdup (val);
341#endif
342 }
306 else if (!strcmp (var, "http-proxy-port")) 343 else if (!strcmp (var, "http-proxy-port"))
344 {
345#if ENABLE_HTTP_PROXY
307 proxy_port = atoi (val); 346 proxy_port = atoi (val);
347#endif
348 }
308 else if (!strcmp (var, "http-proxy-auth")) 349 else if (!strcmp (var, "http-proxy-auth"))
350 {
351#if ENABLE_HTTP_PROXY
309 proxy_auth = (char *)base64_encode ((const u8 *)val, strlen (val)); 352 proxy_auth = (char *)base64_encode ((const u8 *)val, strlen (val));
310#endif 353#endif
354 }
311 355
312 /* node-specific, non-defaultable */ 356 /* node-specific, non-defaultable */
313 else if (node != &default_node && !strcmp (var, "hostname")) 357 else if (node != &default_node && !strcmp (var, "hostname"))
314 {
315 free (node->hostname);
316 node->hostname = strdup (val); 358 free (node->hostname), node->hostname = strdup (val);
317 }
318 359
319 /* node-specific, defaultable */ 360 /* node-specific, defaultable */
320 else if (!strcmp (var, "udp-port")) 361 else if (!strcmp (var, "udp-port"))
321 node->udp_port = atoi (val); 362 node->udp_port = atoi (val);
322 else if (!strcmp (var, "tcp-port")) 363 else if (!strcmp (var, "tcp-port"))
323 node->tcp_port = atoi (val); 364 node->tcp_port = atoi (val);
365 else if (!strcmp (var, "dns-hostname"))
366 {
367#if ENABLE_DNS
368 free (node->dns_hostname), node->dns_hostname = strdup (val);
369#endif
370 }
371 else if (!strcmp (var, "dns-port"))
372 {
373#if ENABLE_DNS
374 node->dns_port = atoi (val);
375#endif
376 }
377 else if (!strcmp (var, "dns-domain"))
378 {
379#if ENABLE_DNS
380 free (node->domain), node->domain = strdup (val);
381#endif
382 }
324 else if (!strcmp (var, "router-priority")) 383 else if (!strcmp (var, "router-priority"))
325 node->routerprio = atoi (val); 384 node->routerprio = atoi (val);
385 else if (!strcmp (var, "max-retry"))
386 node->max_retry = atoi (val);
326 else if (!strcmp (var, "connect")) 387 else if (!strcmp (var, "connect"))
327 { 388 {
328 if (!strcmp (val, "ondemand")) 389 if (!strcmp (val, "ondemand"))
329 node->connectmode = conf_node::C_ONDEMAND; 390 node->connectmode = conf_node::C_ONDEMAND;
330 else if (!strcmp (val, "never")) 391 else if (!strcmp (val, "never"))
… …
333 node->connectmode = conf_node::C_ALWAYS; 394 node->connectmode = conf_node::C_ALWAYS;
334 else if (!strcmp (val, "disabled")) 395 else if (!strcmp (val, "disabled"))
335 node->connectmode = conf_node::C_DISABLED; 396 node->connectmode = conf_node::C_DISABLED;
336 else 397 else
337 slog (L_WARN, 398 slog (L_WARN,
338 _("illegal value for 'connectmode', use one of 'ondemand', 'never', 'always' or 'disabled', at '%s' line %d"), 399 _("illegal value for 'connectmode', use one of 'ondemand', 'never', 'always' or 'disabled', at '%s' line %d"),
339 var, fname, lineno); 400 var, fname, lineno);
340 } 401 }
341 else if (!strcmp (var, "inherit-tos")) 402 else if (!strcmp (var, "inherit-tos"))
342 { 403 {
343 parse_bool (node->inherit_tos, "inherit-tos", true, false); 404 parse_bool (node->inherit_tos, "inherit-tos", true, false);
344 } 405 }
… …
355 } 416 }
356 else if (!strcmp (var, "enable-icmp")) 417 else if (!strcmp (var, "enable-icmp"))
357 { 418 {
358#if ENABLE_ICMP 419#if ENABLE_ICMP
359 u8 v; parse_bool (v, "enable-icmp" , PROT_ICMPv4, 0); node->protocols = (node->protocols & ~PROT_ICMPv4) | v; 420 u8 v; parse_bool (v, "enable-icmp" , PROT_ICMPv4, 0); node->protocols = (node->protocols & ~PROT_ICMPv4) | v;
421#endif
422 }
423 else if (!strcmp (var, "enable-dns"))
424 {
425#if ENABLE_DNS
426 u8 v; parse_bool (v, "enable-dns" , PROT_DNSv4, 0); node->protocols = (node->protocols & ~PROT_DNSv4) | v;
360#endif 427#endif
361 } 428 }
362 else if (!strcmp (var, "enable-udp")) 429 else if (!strcmp (var, "enable-udp"))
363 { 430 {
364 u8 v; parse_bool (v, "enable-udp" , PROT_UDPv4, 0); node->protocols = (node->protocols & ~PROT_UDPv4) | v; 431 u8 v; parse_bool (v, "enable-udp" , PROT_UDPv4, 0); node->protocols = (node->protocols & ~PROT_UDPv4) | v;
… …
378 fclose (f); 445 fclose (f);
379 } 446 }
380 else 447 else
381 { 448 {
382 slog (L_ERR, _("unable to read config file '%s': %s"), fname, strerror (errno)); 449 slog (L_ERR, _("unable to read config file '%s': %s"), fname, strerror (errno));
383 exit (1); 450 exit (EXIT_FAILURE);
384 } 451 }
385 452
386 free (fname); 453 free (fname);
387 454
388 fname = config_filename (prikeyfile, "hostkey"); 455 fname = config_filename (prikeyfile, "hostkey");
… …
394 461
395 if (!PEM_read_RSAPrivateKey (f, &rsa_key, NULL, NULL)) 462 if (!PEM_read_RSAPrivateKey (f, &rsa_key, NULL, NULL))
396 { 463 {
397 ERR_load_RSA_strings (); ERR_load_PEM_strings (); 464 ERR_load_RSA_strings (); ERR_load_PEM_strings ();
398 slog (L_ERR, _("unable to read private rsa key file '%s': %s"), fname, ERR_error_string (ERR_get_error (), 0)); 465 slog (L_ERR, _("unable to read private rsa key file '%s': %s"), fname, ERR_error_string (ERR_get_error (), 0));
399 exit (1); 466 exit (EXIT_FAILURE);
400 } 467 }
401 468
402 RSA_blinding_on (rsa_key, 0); 469 require (RSA_blinding_on (rsa_key, 0));
403 470
404 fclose (f); 471 fclose (f);
405 } 472 }
406 else 473 else
407 { 474 {
408 slog (need_keys ? L_ERR : L_NOTICE, _("unable to open private rsa key file '%s': %s"), fname, strerror (errno)); 475 slog (need_keys ? L_ERR : L_NOTICE, _("unable to open private rsa key file '%s': %s"), fname, strerror (errno));
409 476
410 if (need_keys) 477 if (need_keys)
411 exit (1); 478 exit (EXIT_FAILURE);
412 } 479 }
480
481 if (need_keys && ::thisnode
482 && rsa_key && thisnode && thisnode->rsa_key)
483 if (BN_cmp (rsa_key->n, thisnode->rsa_key->n) != 0
484 || BN_cmp (rsa_key->e, thisnode->rsa_key->e) != 0)
485 {
486 slog (L_NOTICE, _("private hostkey and public node key mismatch: is '%s' the correct node?"), ::thisnode);
487 exit (EXIT_FAILURE);
488 }
413 489
414 free (fname); 490 free (fname);
415} 491}
416 492
417char *configuration::config_filename (const char *name, const char *dflt) 493char *configuration::config_filename (const char *name, const char *dflt)
… …
453 printf ("\n"); 529 printf ("\n");
454} 530}
455 531
456configuration::configuration () 532configuration::configuration ()
457{ 533{
534 asprintf (&confbase, "%s/gvpe", CONFDIR);
535
458 init (); 536 init ();
459} 537}
460 538
461configuration::~configuration () 539configuration::~configuration ()
462{ 540{

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