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Comparing gvpe/src/conf.C (file contents):
Revision 1.18 by pcg, Thu Oct 16 02:41:21 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));
101 107
108 mtu = DEFAULT_MTU;
102 rekey = DEFAULT_REKEY; 109 rekey = DEFAULT_REKEY;
103 keepalive = DEFAULT_KEEPALIVE; 110 keepalive = DEFAULT_KEEPALIVE;
104 llevel = L_INFO; 111 llevel = L_INFO;
105 ip_proto = IPPROTO_GRE; 112 ip_proto = IPPROTO_GRE;
106#if ENABLE_ICMP 113#if ENABLE_ICMP
107 icmp_type = ICMP_ECHOREPLY; 114 icmp_type = ICMP_ECHOREPLY;
108#endif 115#endif
109 116
110 default_node.udp_port = DEFAULT_UDPPORT; 117 default_node.udp_port = DEFAULT_UDPPORT;
111 default_node.tcp_port = DEFAULT_UDPPORT; 118 default_node.tcp_port = DEFAULT_UDPPORT; // ehrm
112 default_node.connectmode = conf_node::C_ALWAYS; 119 default_node.connectmode = conf_node::C_ALWAYS;
113 default_node.compress = true; 120 default_node.compress = true;
114 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");
115} 131}
116 132
117void configuration::cleanup() 133void configuration::cleanup()
118{ 134{
119 if (rsa_key) 135 if (rsa_key)
120 RSA_free (rsa_key); 136 RSA_free (rsa_key);
121 137
122 rsa_key = 0; 138 rsa_key = 0;
123 139
140 free (pidfilename); pidfilename = 0;
124 free (ifname); ifname = 0; 141 free (ifname); ifname = 0;
125#if ENABLE_HTTP_PROXY 142#if ENABLE_HTTP_PROXY
126 free (proxy_host); proxy_host = 0; 143 free (proxy_host); proxy_host = 0;
127 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;
128#endif 148#endif
129} 149}
130 150
131void 151void
132configuration::clear_config () 152configuration::clear_config ()
… …
157 char *fname; 177 char *fname;
158 FILE *f; 178 FILE *f;
159 179
160 clear_config (); 180 clear_config ();
161 181
162 asprintf (&fname, "%s/vped.conf", confbase); 182 asprintf (&fname, "%s/gvpe.conf", confbase);
163 f = fopen (fname, "r"); 183 f = fopen (fname, "r");
164 184
165 if (f) 185 if (f)
166 { 186 {
167 char line[16384]; 187 char line[16384];
… …
224 else 244 else
225 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);
226 } 246 }
227 else if (!strcmp (var, "ip-proto")) 247 else if (!strcmp (var, "ip-proto"))
228 ip_proto = atoi (val); 248 ip_proto = atoi (val);
249 else if (!strcmp (var, "icmp-type"))
250 {
229#if ENABLE_ICMP 251#if ENABLE_ICMP
230 //TODO: error message
231 else if (!strcmp (var, "icmp-type"))
232 icmp_type = atoi (val); 252 icmp_type = atoi (val);
233#endif 253#endif
254 }
234 255
235 // per config 256 // per config
236 else if (!strcmp (var, "node")) 257 else if (!strcmp (var, "node"))
237 { 258 {
238 default_node.id++; 259 default_node.id++;
… …
256 277
257 if (!PEM_read_RSAPublicKey(f, &node->rsa_key, NULL, NULL)) 278 if (!PEM_read_RSAPublicKey(f, &node->rsa_key, NULL, NULL))
258 { 279 {
259 ERR_load_RSA_strings (); ERR_load_PEM_strings (); 280 ERR_load_RSA_strings (); ERR_load_PEM_strings ();
260 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));
261 exit (1); 282 exit (EXIT_FAILURE);
262 } 283 }
263 284
264 RSA_blinding_on (node->rsa_key, 0); 285 require (RSA_blinding_on (node->rsa_key, 0));
265 286
266 fclose (f); 287 fclose (f);
267 } 288 }
268 else 289 else
269 { 290 {
270 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));
271 292
272 if (need_keys) 293 if (need_keys)
273 exit (1); 294 exit (EXIT_FAILURE);
274 } 295 }
275 296
276 free (fname); 297 free (fname);
277 } 298 }
278 299
279 if (!::thisnode || !strcmp (node->nodename, ::thisnode)) 300 if (::thisnode && !strcmp (node->nodename, ::thisnode))
280 thisnode = node; 301 thisnode = node;
281 } 302 }
282 else if (!strcmp (var, "private-key")) 303 else if (!strcmp (var, "private-key"))
283 prikeyfile = strdup (val); 304 free (prikeyfile), prikeyfile = strdup (val);
284 else if (!strcmp (var, "ifpersist")) 305 else if (!strcmp (var, "ifpersist"))
285 { 306 {
286 parse_bool (ifpersist, "ifpersist", true, false); 307 parse_bool (ifpersist, "ifpersist", true, false);
287 } 308 }
288 else if (!strcmp (var, "ifname")) 309 else if (!strcmp (var, "ifname"))
289 ifname = strdup (val); 310 free (ifname), ifname = strdup (val);
290 else if (!strcmp (var, "rekey")) 311 else if (!strcmp (var, "rekey"))
291 rekey = atoi (val); 312 rekey = atoi (val);
292 else if (!strcmp (var, "keepalive")) 313 else if (!strcmp (var, "keepalive"))
293 keepalive = atoi (val); 314 keepalive = atoi (val);
294 else if (!strcmp (var, "mtu")) 315 else if (!strcmp (var, "mtu"))
295 mtu = atoi (val); 316 mtu = atoi (val);
296 else if (!strcmp (var, "if-up")) 317 else if (!strcmp (var, "if-up"))
297 script_if_up = strdup (val); 318 free (script_if_up), script_if_up = strdup (val);
298 else if (!strcmp (var, "node-up")) 319 else if (!strcmp (var, "node-up"))
299 script_node_up = strdup (val); 320 free (script_node_up), script_node_up = strdup (val);
300 else if (!strcmp (var, "node-down")) 321 else if (!strcmp (var, "node-down"))
301 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 {
302#if ENABLE_HTTP_PROXY 339#if ENABLE_HTTP_PROXY
303 else if (!strcmp (var, "http-proxy-host"))
304 proxy_host = strdup (val); 340 free (proxy_host), proxy_host = strdup (val);
341#endif
342 }
305 else if (!strcmp (var, "http-proxy-port")) 343 else if (!strcmp (var, "http-proxy-port"))
344 {
345#if ENABLE_HTTP_PROXY
306 proxy_port = atoi (val); 346 proxy_port = atoi (val);
347#endif
348 }
307 else if (!strcmp (var, "http-proxy-auth")) 349 else if (!strcmp (var, "http-proxy-auth"))
350 {
351#if ENABLE_HTTP_PROXY
308 proxy_auth = (char *)base64_encode ((const u8 *)val, strlen (val)); 352 proxy_auth = (char *)base64_encode ((const u8 *)val, strlen (val));
309#endif 353#endif
354 }
310 355
311 /* node-specific, non-defaultable */ 356 /* node-specific, non-defaultable */
312 else if (node != &default_node && !strcmp (var, "hostname")) 357 else if (node != &default_node && !strcmp (var, "hostname"))
313 {
314 free (node->hostname);
315 node->hostname = strdup (val); 358 free (node->hostname), node->hostname = strdup (val);
316 }
317 359
318 /* node-specific, defaultable */ 360 /* node-specific, defaultable */
319 else if (!strcmp (var, "udp-port")) 361 else if (!strcmp (var, "udp-port"))
320 node->udp_port = atoi (val); 362 node->udp_port = atoi (val);
321 else if (!strcmp (var, "tcp-port")) 363 else if (!strcmp (var, "tcp-port"))
322 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 }
323 else if (!strcmp (var, "router-priority")) 383 else if (!strcmp (var, "router-priority"))
324 node->routerprio = atoi (val); 384 node->routerprio = atoi (val);
385 else if (!strcmp (var, "max-retry"))
386 node->max_retry = atoi (val);
325 else if (!strcmp (var, "connect")) 387 else if (!strcmp (var, "connect"))
326 { 388 {
327 if (!strcmp (val, "ondemand")) 389 if (!strcmp (val, "ondemand"))
328 node->connectmode = conf_node::C_ONDEMAND; 390 node->connectmode = conf_node::C_ONDEMAND;
329 else if (!strcmp (val, "never")) 391 else if (!strcmp (val, "never"))
… …
332 node->connectmode = conf_node::C_ALWAYS; 394 node->connectmode = conf_node::C_ALWAYS;
333 else if (!strcmp (val, "disabled")) 395 else if (!strcmp (val, "disabled"))
334 node->connectmode = conf_node::C_DISABLED; 396 node->connectmode = conf_node::C_DISABLED;
335 else 397 else
336 slog (L_WARN, 398 slog (L_WARN,
337 _("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"),
338 var, fname, lineno); 400 var, fname, lineno);
339 } 401 }
340 else if (!strcmp (var, "inherit-tos")) 402 else if (!strcmp (var, "inherit-tos"))
341 { 403 {
342 parse_bool (node->inherit_tos, "inherit-tos", true, false); 404 parse_bool (node->inherit_tos, "inherit-tos", true, false);
343 } 405 }
… …
354 } 416 }
355 else if (!strcmp (var, "enable-icmp")) 417 else if (!strcmp (var, "enable-icmp"))
356 { 418 {
357#if ENABLE_ICMP 419#if ENABLE_ICMP
358 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;
359#endif 427#endif
360 } 428 }
361 else if (!strcmp (var, "enable-udp")) 429 else if (!strcmp (var, "enable-udp"))
362 { 430 {
363 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;
… …
377 fclose (f); 445 fclose (f);
378 } 446 }
379 else 447 else
380 { 448 {
381 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));
382 exit (1); 450 exit (EXIT_FAILURE);
383 } 451 }
384 452
385 free (fname); 453 free (fname);
386 454
387 fname = config_filename (prikeyfile, "hostkey"); 455 fname = config_filename (prikeyfile, "hostkey");
… …
393 461
394 if (!PEM_read_RSAPrivateKey (f, &rsa_key, NULL, NULL)) 462 if (!PEM_read_RSAPrivateKey (f, &rsa_key, NULL, NULL))
395 { 463 {
396 ERR_load_RSA_strings (); ERR_load_PEM_strings (); 464 ERR_load_RSA_strings (); ERR_load_PEM_strings ();
397 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));
398 exit (1); 466 exit (EXIT_FAILURE);
399 } 467 }
400 468
401 RSA_blinding_on (rsa_key, 0); 469 require (RSA_blinding_on (rsa_key, 0));
402 470
403 fclose (f); 471 fclose (f);
404 } 472 }
405 else 473 else
406 { 474 {
407 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));
408 476
409 if (need_keys) 477 if (need_keys)
410 exit (1); 478 exit (EXIT_FAILURE);
411 } 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 }
412 489
413 free (fname); 490 free (fname);
414} 491}
415 492
416char *configuration::config_filename (const char *name, const char *dflt) 493char *configuration::config_filename (const char *name, const char *dflt)
… …
452 printf ("\n"); 529 printf ("\n");
453} 530}
454 531
455configuration::configuration () 532configuration::configuration ()
456{ 533{
534 asprintf (&confbase, "%s/gvpe", CONFDIR);
535
457 init (); 536 init ();
458} 537}
459 538
460configuration::~configuration () 539configuration::~configuration ()
461{ 540{

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