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Comparing gvpe/src/conf.C (file contents):
Revision 1.17 by pcg, Tue Oct 14 15:48:15 2003 UTC vs.
Revision 1.24 by pcg, Fri Apr 2 14:42:45 2004 UTC

1/* 1/*
2 conf.c -- configuration code 2 conf.c -- configuration code
3 Copyright (C) 1998 Robert van der Meulen 3 Copyright (C) 2003-2004 Marc Lehmann <pcg@goof.com>
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
9 This program is free software; you can redistribute it and/or modify 5 This program is free software; you can redistribute it and/or modify
10 it under the terms of the GNU General Public License as published by 6 it under the terms of the GNU General Public License as published by
11 the Free Software Foundation; either version 2 of the License, or 7 the Free Software Foundation; either version 2 of the License, or
12 (at your option) any later version. 8 (at your option) any later version.
37 33
38#include <openssl/err.h> 34#include <openssl/err.h>
39#include <openssl/pem.h> 35#include <openssl/pem.h>
40#include <openssl/rsa.h> 36#include <openssl/rsa.h>
41#include <openssl/rand.h> 37#include <openssl/rand.h>
38#include <openssl/bn.h>
42 39
43#include "gettext.h" 40#include "gettext.h"
44 41
45#include "conf.h" 42#include "conf.h"
46#include "slog.h" 43#include "slog.h"
47#include "util.h" 44#include "util.h"
48 45
49char *confbase; 46char *confbase;
50char *thisnode; 47char *thisnode;
51char *identname; 48char *identname;
52char *pidfilename;
53 49
54struct configuration conf; 50struct configuration conf;
55 51
56u8 best_protocol (u8 protset) 52u8 best_protocol (u8 protset)
57{ 53{
58 if (protset & PROT_IPv4 ) return PROT_IPv4; 54 if (protset & PROT_IPv4 ) return PROT_IPv4;
59 if (protset & PROT_ICMPv4) return PROT_ICMPv4; 55 if (protset & PROT_ICMPv4) return PROT_ICMPv4;
60 if (protset & PROT_UDPv4 ) return PROT_UDPv4; 56 if (protset & PROT_UDPv4 ) return PROT_UDPv4;
61 if (protset & PROT_TCPv4 ) return PROT_TCPv4; 57 if (protset & PROT_TCPv4 ) return PROT_TCPv4;
58 if (protset & PROT_DNSv4 ) return PROT_DNSv4;
62 59
63 return 0; 60 return 0;
64} 61}
65 62
66const char *strprotocol (u8 protocol) 63const char *strprotocol (u8 protocol)
67{ 64{
68 if (protocol & PROT_IPv4 ) return "rawip"; 65 if (protocol & PROT_IPv4 ) return "rawip";
69 if (protocol & PROT_ICMPv4) return "icmp"; 66 if (protocol & PROT_ICMPv4) return "icmp";
70 if (protocol & PROT_UDPv4 ) return "udp"; 67 if (protocol & PROT_UDPv4 ) return "udp";
71 if (protocol & PROT_TCPv4 ) return "tcp"; 68 if (protocol & PROT_TCPv4 ) return "tcp";
69 if (protocol & PROT_DNSv4 ) return "dns";
72 70
73 return "<unknown>"; 71 return "<unknown>";
74} 72}
75 73
76void 74void
101 99
102void configuration::init () 100void configuration::init ()
103{ 101{
104 memset (this, 0, sizeof (*this)); 102 memset (this, 0, sizeof (*this));
105 103
104 mtu = DEFAULT_MTU;
106 rekey = DEFAULT_REKEY; 105 rekey = DEFAULT_REKEY;
107 keepalive = DEFAULT_KEEPALIVE; 106 keepalive = DEFAULT_KEEPALIVE;
108 llevel = L_INFO; 107 llevel = L_INFO;
109 ip_proto = IPPROTO_GRE; 108 ip_proto = IPPROTO_GRE;
110#if ENABLE_ICMP 109#if ENABLE_ICMP
111 icmp_type = ICMP_ECHOREPLY; 110 icmp_type = ICMP_ECHOREPLY;
112#endif 111#endif
113 112
114 default_node.udp_port = DEFAULT_UDPPORT; 113 default_node.udp_port = DEFAULT_UDPPORT;
115 default_node.tcp_port = DEFAULT_UDPPORT; 114 default_node.tcp_port = DEFAULT_UDPPORT; // ehrm
116 default_node.connectmode = conf_node::C_ALWAYS; 115 default_node.connectmode = conf_node::C_ALWAYS;
117 default_node.compress = true; 116 default_node.compress = true;
118 default_node.protocols = PROT_UDPv4; 117 default_node.protocols = PROT_UDPv4;
119} 118}
120 119
123 if (rsa_key) 122 if (rsa_key)
124 RSA_free (rsa_key); 123 RSA_free (rsa_key);
125 124
126 rsa_key = 0; 125 rsa_key = 0;
127 126
127 free (pidfilename); pidfilename = 0;
128 free (ifname); ifname = 0; 128 free (ifname); ifname = 0;
129#if ENABLE_HTTP_PROXY 129#if ENABLE_HTTP_PROXY
130 free (proxy_host); proxy_host = 0; 130 free (proxy_host); proxy_host = 0;
131 free (proxy_auth); proxy_auth = 0; 131 free (proxy_auth); proxy_auth = 0;
132#endif 132#endif
133} 133}
134 134
135void 135void
136configuration::clear_config () 136configuration::clear_config ()
228 else 228 else
229 slog (L_WARN, "'%s': %s, at '%s' line %d", val, UNKNOWN_LOGLEVEL, fname, line); 229 slog (L_WARN, "'%s': %s, at '%s' line %d", val, UNKNOWN_LOGLEVEL, fname, line);
230 } 230 }
231 else if (!strcmp (var, "ip-proto")) 231 else if (!strcmp (var, "ip-proto"))
232 ip_proto = atoi (val); 232 ip_proto = atoi (val);
233 else if (!strcmp (var, "icmp-type"))
234 {
233#if ENABLE_ICMP 235#if ENABLE_ICMP
234 //TODO: error message
235 else if (!strcmp (var, "icmp-type"))
236 icmp_type = atoi (val); 236 icmp_type = atoi (val);
237#endif 237#endif
238 }
238 239
239 // per config 240 // per config
240 else if (!strcmp (var, "node")) 241 else if (!strcmp (var, "node"))
241 { 242 {
242 default_node.id++; 243 default_node.id++;
260 261
261 if (!PEM_read_RSAPublicKey(f, &node->rsa_key, NULL, NULL)) 262 if (!PEM_read_RSAPublicKey(f, &node->rsa_key, NULL, NULL))
262 { 263 {
263 ERR_load_RSA_strings (); ERR_load_PEM_strings (); 264 ERR_load_RSA_strings (); ERR_load_PEM_strings ();
264 slog (L_ERR, _("unable to open public rsa key file '%s': %s"), fname, ERR_error_string (ERR_get_error (), 0)); 265 slog (L_ERR, _("unable to open public rsa key file '%s': %s"), fname, ERR_error_string (ERR_get_error (), 0));
265 exit (1); 266 exit (EXIT_FAILURE);
266 } 267 }
267 268
268 RSA_blinding_on (node->rsa_key, 0); 269 require (RSA_blinding_on (node->rsa_key, 0));
269 270
270 fclose (f); 271 fclose (f);
271 } 272 }
272 else 273 else
273 { 274 {
274 slog (need_keys ? L_ERR : L_NOTICE, _("unable to read public rsa key file '%s': %s"), fname, strerror (errno)); 275 slog (need_keys ? L_ERR : L_NOTICE, _("unable to read public rsa key file '%s': %s"), fname, strerror (errno));
275 276
276 if (need_keys) 277 if (need_keys)
277 exit (1); 278 exit (EXIT_FAILURE);
278 } 279 }
279 280
280 free (fname); 281 free (fname);
281 } 282 }
282 283
283 if (!::thisnode || !strcmp (node->nodename, ::thisnode)) 284 if (::thisnode && !strcmp (node->nodename, ::thisnode))
284 thisnode = node; 285 thisnode = node;
285 } 286 }
286 else if (!strcmp (var, "private-key")) 287 else if (!strcmp (var, "private-key"))
287 prikeyfile = strdup (val); 288 free (prikeyfile), prikeyfile = strdup (val);
288 else if (!strcmp (var, "ifpersist")) 289 else if (!strcmp (var, "ifpersist"))
289 { 290 {
290 parse_bool (ifpersist, "ifpersist", true, false); 291 parse_bool (ifpersist, "ifpersist", true, false);
291 } 292 }
292 else if (!strcmp (var, "ifname")) 293 else if (!strcmp (var, "ifname"))
293 ifname = strdup (val); 294 free (ifname), ifname = strdup (val);
294 else if (!strcmp (var, "rekey")) 295 else if (!strcmp (var, "rekey"))
295 rekey = atoi (val); 296 rekey = atoi (val);
296 else if (!strcmp (var, "keepalive")) 297 else if (!strcmp (var, "keepalive"))
297 keepalive = atoi (val); 298 keepalive = atoi (val);
298 else if (!strcmp (var, "mtu")) 299 else if (!strcmp (var, "mtu"))
299 mtu = atoi (val); 300 mtu = atoi (val);
300 else if (!strcmp (var, "if-up")) 301 else if (!strcmp (var, "if-up"))
301 script_if_up = strdup (val); 302 free (script_if_up), script_if_up = strdup (val);
302 else if (!strcmp (var, "node-up")) 303 else if (!strcmp (var, "node-up"))
303 script_node_up = strdup (val); 304 free (script_node_up), script_node_up = strdup (val);
304 else if (!strcmp (var, "node-down")) 305 else if (!strcmp (var, "node-down"))
305 script_node_down = strdup (val); 306 free (script_node_down), script_node_down = strdup (val);
307 else if (!strcmp (var, "pid-file"))
308 free (pidfilename), pidfilename = strdup (val);
309 else if (!strcmp (var, "http-proxy-host"))
310 {
306#if ENABLE_HTTP_PROXY 311#if ENABLE_HTTP_PROXY
307 else if (!strcmp (var, "http-proxy-host"))
308 proxy_host = strdup (val); 312 free (proxy_host), proxy_host = strdup (val);
313#endif
314 }
309 else if (!strcmp (var, "http-proxy-port")) 315 else if (!strcmp (var, "http-proxy-port"))
316 {
317#if ENABLE_HTTP_PROXY
310 proxy_port = atoi (val); 318 proxy_port = atoi (val);
319#endif
320 }
311 else if (!strcmp (var, "http-proxy-auth")) 321 else if (!strcmp (var, "http-proxy-auth"))
322 {
323#if ENABLE_HTTP_PROXY
312 proxy_auth = (char *)base64_encode ((const u8 *)val, strlen (val)); 324 proxy_auth = (char *)base64_encode ((const u8 *)val, strlen (val));
313#endif 325#endif
326 }
314 327
315 /* node-specific, non-defaultable */ 328 /* node-specific, non-defaultable */
316 else if (node != &default_node && !strcmp (var, "hostname")) 329 else if (node != &default_node && !strcmp (var, "hostname"))
317 {
318 free (node->hostname);
319 node->hostname = strdup (val); 330 free (node->hostname), node->hostname = strdup (val);
320 }
321 331
322 /* node-specific, defaultable */ 332 /* node-specific, defaultable */
323 else if (!strcmp (var, "udp-port")) 333 else if (!strcmp (var, "udp-port"))
324 node->udp_port = atoi (val); 334 node->udp_port = atoi (val);
325 else if (!strcmp (var, "tcp-port")) 335 else if (!strcmp (var, "tcp-port"))
326 node->tcp_port = atoi (val); 336 node->tcp_port = atoi (val);
337 else if (!strcmp (var, "dns-port"))
338 node->dns_port = atoi (val);
327 else if (!strcmp (var, "router-priority")) 339 else if (!strcmp (var, "router-priority"))
328 node->routerprio = atoi (val); 340 node->routerprio = atoi (val);
329 else if (!strcmp (var, "connect")) 341 else if (!strcmp (var, "connect"))
330 { 342 {
331 if (!strcmp (val, "ondemand")) 343 if (!strcmp (val, "ondemand"))
360 { 372 {
361#if ENABLE_ICMP 373#if ENABLE_ICMP
362 u8 v; parse_bool (v, "enable-icmp" , PROT_ICMPv4, 0); node->protocols = (node->protocols & ~PROT_ICMPv4) | v; 374 u8 v; parse_bool (v, "enable-icmp" , PROT_ICMPv4, 0); node->protocols = (node->protocols & ~PROT_ICMPv4) | v;
363#endif 375#endif
364 } 376 }
377 else if (!strcmp (var, "enable-dns"))
378 {
379#if ENABLE_DNS
380 u8 v; parse_bool (v, "enable-dns" , PROT_DNSv4, 0); node->protocols = (node->protocols & ~PROT_DNSv4) | v;
381#endif
382 }
365 else if (!strcmp (var, "enable-udp")) 383 else if (!strcmp (var, "enable-udp"))
366 { 384 {
367 u8 v; parse_bool (v, "enable-udp" , PROT_UDPv4, 0); node->protocols = (node->protocols & ~PROT_UDPv4) | v; 385 u8 v; parse_bool (v, "enable-udp" , PROT_UDPv4, 0); node->protocols = (node->protocols & ~PROT_UDPv4) | v;
368 } 386 }
369 else if (!strcmp (var, "enable-rawip")) 387 else if (!strcmp (var, "enable-rawip"))
370 { 388 {;
371 u8 v; parse_bool (v, "enable-rawip", PROT_IPv4, 0); node->protocols = (node->protocols & ~PROT_IPv4 ) | v; 389 u8 v; parse_bool (v, "enable-rawip", PROT_IPv4, 0); node->protocols = (node->protocols & ~PROT_IPv4 ) | v;
372 } 390 }
373 391
374 // unknown or misplaced 392 // unknown or misplaced
375 else 393 else
381 fclose (f); 399 fclose (f);
382 } 400 }
383 else 401 else
384 { 402 {
385 slog (L_ERR, _("unable to read config file '%s': %s"), fname, strerror (errno)); 403 slog (L_ERR, _("unable to read config file '%s': %s"), fname, strerror (errno));
386 exit (1); 404 exit (EXIT_FAILURE);
387 } 405 }
388 406
389 free (fname); 407 free (fname);
390 408
391 fname = config_filename (prikeyfile, "hostkey"); 409 fname = config_filename (prikeyfile, "hostkey");
397 415
398 if (!PEM_read_RSAPrivateKey (f, &rsa_key, NULL, NULL)) 416 if (!PEM_read_RSAPrivateKey (f, &rsa_key, NULL, NULL))
399 { 417 {
400 ERR_load_RSA_strings (); ERR_load_PEM_strings (); 418 ERR_load_RSA_strings (); ERR_load_PEM_strings ();
401 slog (L_ERR, _("unable to read private rsa key file '%s': %s"), fname, ERR_error_string (ERR_get_error (), 0)); 419 slog (L_ERR, _("unable to read private rsa key file '%s': %s"), fname, ERR_error_string (ERR_get_error (), 0));
402 exit (1); 420 exit (EXIT_FAILURE);
403 } 421 }
404 422
405 RSA_blinding_on (rsa_key, 0); 423 require (RSA_blinding_on (rsa_key, 0));
406 424
407 fclose (f); 425 fclose (f);
408 } 426 }
409 else 427 else
410 { 428 {
411 slog (need_keys ? L_ERR : L_NOTICE, _("unable to open private rsa key file '%s': %s"), fname, strerror (errno)); 429 slog (need_keys ? L_ERR : L_NOTICE, _("unable to open private rsa key file '%s': %s"), fname, strerror (errno));
412 430
413 if (need_keys) 431 if (need_keys)
414 exit (1); 432 exit (EXIT_FAILURE);
415 } 433 }
434
435 if (need_keys && ::thisnode
436 && rsa_key && thisnode && thisnode->rsa_key)
437 if (BN_cmp (rsa_key->n, thisnode->rsa_key->n) != 0
438 || BN_cmp (rsa_key->e, thisnode->rsa_key->e) != 0)
439 {
440 slog (L_NOTICE, _("private hostkey and public node key mismatch: is '%s' the correct node?"), ::thisnode);
441 exit (EXIT_FAILURE);
442 }
416 443
417 free (fname); 444 free (fname);
418} 445}
419 446
420char *configuration::config_filename (const char *name, const char *dflt) 447char *configuration::config_filename (const char *name, const char *dflt)

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