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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 1.25 by pcg, Mon May 10 20:13:09 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.
… …
31#include <netdb.h> 27#include <netdb.h>
32#include <sys/stat.h> 28#include <sys/stat.h>
33#include <sys/types.h> 29#include <sys/types.h>
34#include <unistd.h> 30#include <unistd.h>
35 31
36#include <netinet/in.h> 32#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 33
48#include <openssl/err.h> 34#include <openssl/err.h>
49#include <openssl/pem.h> 35#include <openssl/pem.h>
50#include <openssl/rsa.h> 36#include <openssl/rsa.h>
51#include <openssl/rand.h> 37#include <openssl/rand.h>
38#include <openssl/bn.h>
52 39
53#include "gettext.h" 40#include "gettext.h"
54 41
55#include "conf.h" 42#include "conf.h"
56#include "slog.h" 43#include "slog.h"
57#include "util.h" 44#include "util.h"
58 45
59char *confbase; 46char *confbase;
60char *thisnode; 47char *thisnode;
61char *identname; 48char *identname;
62char *pidfilename;
63 49
64struct configuration conf; 50struct configuration conf;
65 51
66u8 best_protocol (u8 protset) 52u8 best_protocol (u8 protset)
67{ 53{
68 if (protset & PROT_IPv4 ) return PROT_IPv4; 54 if (protset & PROT_IPv4 ) return PROT_IPv4;
69 if (protset & PROT_ICMPv4) return PROT_ICMPv4; 55 if (protset & PROT_ICMPv4) return PROT_ICMPv4;
70 if (protset & PROT_UDPv4 ) return PROT_UDPv4; 56 if (protset & PROT_UDPv4 ) return PROT_UDPv4;
71 if (protset & PROT_TCPv4 ) return PROT_TCPv4; 57 if (protset & PROT_TCPv4 ) return PROT_TCPv4;
58 if (protset & PROT_DNSv4 ) return PROT_DNSv4;
72 59
73 return 0; 60 return 0;
74} 61}
75 62
76const char *strprotocol (u8 protocol) 63const char *strprotocol (u8 protocol)
77{ 64{
78 if (protocol & PROT_IPv4 ) return "rawip"; 65 if (protocol & PROT_IPv4 ) return "rawip";
79 if (protocol & PROT_ICMPv4) return "icmp"; 66 if (protocol & PROT_ICMPv4) return "icmp";
80 if (protocol & PROT_UDPv4 ) return "udp"; 67 if (protocol & PROT_UDPv4 ) return "udp";
81 if (protocol & PROT_TCPv4 ) return "tcp"; 68 if (protocol & PROT_TCPv4 ) return "tcp";
69 if (protocol & PROT_DNSv4 ) return "dns";
82 70
83 return "<unknown>"; 71 return "<unknown>";
84} 72}
85 73
86void 74void
… …
109 free (hostname); 97 free (hostname);
110} 98}
111 99
112void configuration::init () 100void configuration::init ()
113{ 101{
102 asprintf (&confbase, "%s/vpe", CONFDIR);
103
114 memset (this, 0, sizeof (*this)); 104 memset (this, 0, sizeof (*this));
115 105
106 mtu = DEFAULT_MTU;
116 rekey = DEFAULT_REKEY; 107 rekey = DEFAULT_REKEY;
117 keepalive = DEFAULT_KEEPALIVE; 108 keepalive = DEFAULT_KEEPALIVE;
118 llevel = L_INFO; 109 llevel = L_INFO;
119 ip_proto = IPPROTO_GRE; 110 ip_proto = IPPROTO_GRE;
120#if ENABLE_ICMP 111#if ENABLE_ICMP
121 icmp_type = ICMP_ECHOREPLY; 112 icmp_type = ICMP_ECHOREPLY;
122#endif 113#endif
123 114
124 default_node.udp_port = DEFAULT_UDPPORT; 115 default_node.udp_port = DEFAULT_UDPPORT;
125 default_node.tcp_port = DEFAULT_UDPPORT; 116 default_node.tcp_port = DEFAULT_UDPPORT; // ehrm
126 default_node.connectmode = conf_node::C_ALWAYS; 117 default_node.connectmode = conf_node::C_ALWAYS;
127 default_node.compress = true; 118 default_node.compress = true;
128 default_node.protocols = PROT_UDPv4; 119 default_node.protocols = PROT_UDPv4;
120
121 conf.pidfilename = strdup (LOCALSTATEDIR "/run/vped.pid");
129} 122}
130 123
131void configuration::cleanup() 124void configuration::cleanup()
132{ 125{
133 if (rsa_key) 126 if (rsa_key)
134 RSA_free (rsa_key); 127 RSA_free (rsa_key);
135 128
136 rsa_key = 0; 129 rsa_key = 0;
137 130
131 free (pidfilename); pidfilename = 0;
138 free (ifname); ifname = 0; 132 free (ifname); ifname = 0;
139#if ENABLE_HTTP_PROXY 133#if ENABLE_HTTP_PROXY
140 free (proxy_host); proxy_host = 0; 134 free (proxy_host); proxy_host = 0;
141 free (proxy_auth); proxy_auth = 0; 135 free (proxy_auth); proxy_auth = 0;
142#endif 136#endif
143} 137}
144 138
145void 139void
146configuration::clear_config () 140configuration::clear_config ()
… …
238 else 232 else
239 slog (L_WARN, "'%s': %s, at '%s' line %d", val, UNKNOWN_LOGLEVEL, fname, line); 233 slog (L_WARN, "'%s': %s, at '%s' line %d", val, UNKNOWN_LOGLEVEL, fname, line);
240 } 234 }
241 else if (!strcmp (var, "ip-proto")) 235 else if (!strcmp (var, "ip-proto"))
242 ip_proto = atoi (val); 236 ip_proto = atoi (val);
237 else if (!strcmp (var, "icmp-type"))
238 {
243#if ENABLE_ICMP 239#if ENABLE_ICMP
244 //TODO: error message
245 else if (!strcmp (var, "icmp-type"))
246 icmp_type = atoi (val); 240 icmp_type = atoi (val);
247#endif 241#endif
242 }
248 243
249 // per config 244 // per config
250 else if (!strcmp (var, "node")) 245 else if (!strcmp (var, "node"))
251 { 246 {
252 default_node.id++; 247 default_node.id++;
… …
270 265
271 if (!PEM_read_RSAPublicKey(f, &node->rsa_key, NULL, NULL)) 266 if (!PEM_read_RSAPublicKey(f, &node->rsa_key, NULL, NULL))
272 { 267 {
273 ERR_load_RSA_strings (); ERR_load_PEM_strings (); 268 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)); 269 slog (L_ERR, _("unable to open public rsa key file '%s': %s"), fname, ERR_error_string (ERR_get_error (), 0));
275 exit (1); 270 exit (EXIT_FAILURE);
276 } 271 }
277 272
278 RSA_blinding_on (node->rsa_key, 0); 273 require (RSA_blinding_on (node->rsa_key, 0));
279 274
280 fclose (f); 275 fclose (f);
281 } 276 }
282 else 277 else
283 { 278 {
284 slog (need_keys ? L_ERR : L_NOTICE, _("unable to read public rsa key file '%s': %s"), fname, strerror (errno)); 279 slog (need_keys ? L_ERR : L_NOTICE, _("unable to read public rsa key file '%s': %s"), fname, strerror (errno));
285 280
286 if (need_keys) 281 if (need_keys)
287 exit (1); 282 exit (EXIT_FAILURE);
288 } 283 }
289 284
290 free (fname); 285 free (fname);
291 } 286 }
292 287
293 if (!::thisnode || !strcmp (node->nodename, ::thisnode)) 288 if (::thisnode && !strcmp (node->nodename, ::thisnode))
294 thisnode = node; 289 thisnode = node;
295 } 290 }
296 else if (!strcmp (var, "private-key")) 291 else if (!strcmp (var, "private-key"))
297 prikeyfile = strdup (val); 292 free (prikeyfile), prikeyfile = strdup (val);
298 else if (!strcmp (var, "ifpersist")) 293 else if (!strcmp (var, "ifpersist"))
299 { 294 {
300 parse_bool (ifpersist, "ifpersist", true, false); 295 parse_bool (ifpersist, "ifpersist", true, false);
301 } 296 }
302 else if (!strcmp (var, "ifname")) 297 else if (!strcmp (var, "ifname"))
303 ifname = strdup (val); 298 free (ifname), ifname = strdup (val);
304 else if (!strcmp (var, "rekey")) 299 else if (!strcmp (var, "rekey"))
305 rekey = atoi (val); 300 rekey = atoi (val);
306 else if (!strcmp (var, "keepalive")) 301 else if (!strcmp (var, "keepalive"))
307 keepalive = atoi (val); 302 keepalive = atoi (val);
308 else if (!strcmp (var, "mtu")) 303 else if (!strcmp (var, "mtu"))
309 mtu = atoi (val); 304 mtu = atoi (val);
310 else if (!strcmp (var, "if-up")) 305 else if (!strcmp (var, "if-up"))
311 script_if_up = strdup (val); 306 free (script_if_up), script_if_up = strdup (val);
312 else if (!strcmp (var, "node-up")) 307 else if (!strcmp (var, "node-up"))
313 script_node_up = strdup (val); 308 free (script_node_up), script_node_up = strdup (val);
314 else if (!strcmp (var, "node-down")) 309 else if (!strcmp (var, "node-down"))
315 script_node_down = strdup (val); 310 free (script_node_down), script_node_down = strdup (val);
311 else if (!strcmp (var, "pid-file"))
312 free (pidfilename), pidfilename = strdup (val);
313 else if (!strcmp (var, "http-proxy-host"))
314 {
316#if ENABLE_HTTP_PROXY 315#if ENABLE_HTTP_PROXY
317 else if (!strcmp (var, "http-proxy-host"))
318 proxy_host = strdup (val); 316 free (proxy_host), proxy_host = strdup (val);
317#endif
318 }
319 else if (!strcmp (var, "http-proxy-port")) 319 else if (!strcmp (var, "http-proxy-port"))
320 {
321#if ENABLE_HTTP_PROXY
320 proxy_port = atoi (val); 322 proxy_port = atoi (val);
323#endif
324 }
321 else if (!strcmp (var, "http-proxy-auth")) 325 else if (!strcmp (var, "http-proxy-auth"))
326 {
327#if ENABLE_HTTP_PROXY
322 proxy_auth = (char *)base64_encode ((const u8 *)val, strlen (val)); 328 proxy_auth = (char *)base64_encode ((const u8 *)val, strlen (val));
323#endif 329#endif
330 }
324 331
325 /* node-specific, non-defaultable */ 332 /* node-specific, non-defaultable */
326 else if (node != &default_node && !strcmp (var, "hostname")) 333 else if (node != &default_node && !strcmp (var, "hostname"))
327 {
328 free (node->hostname);
329 node->hostname = strdup (val); 334 free (node->hostname), node->hostname = strdup (val);
330 }
331 335
332 /* node-specific, defaultable */ 336 /* node-specific, defaultable */
333 else if (!strcmp (var, "udp-port")) 337 else if (!strcmp (var, "udp-port"))
334 node->udp_port = atoi (val); 338 node->udp_port = atoi (val);
335 else if (!strcmp (var, "tcp-port")) 339 else if (!strcmp (var, "tcp-port"))
336 node->tcp_port = atoi (val); 340 node->tcp_port = atoi (val);
341 else if (!strcmp (var, "dns-port"))
342 node->dns_port = atoi (val);
337 else if (!strcmp (var, "router-priority")) 343 else if (!strcmp (var, "router-priority"))
338 node->routerprio = atoi (val); 344 node->routerprio = atoi (val);
339 else if (!strcmp (var, "connect")) 345 else if (!strcmp (var, "connect"))
340 { 346 {
341 if (!strcmp (val, "ondemand")) 347 if (!strcmp (val, "ondemand"))
… …
370 { 376 {
371#if ENABLE_ICMP 377#if ENABLE_ICMP
372 u8 v; parse_bool (v, "enable-icmp" , PROT_ICMPv4, 0); node->protocols = (node->protocols & ~PROT_ICMPv4) | v; 378 u8 v; parse_bool (v, "enable-icmp" , PROT_ICMPv4, 0); node->protocols = (node->protocols & ~PROT_ICMPv4) | v;
373#endif 379#endif
374 } 380 }
381 else if (!strcmp (var, "enable-dns"))
382 {
383#if ENABLE_DNS
384 u8 v; parse_bool (v, "enable-dns" , PROT_DNSv4, 0); node->protocols = (node->protocols & ~PROT_DNSv4) | v;
385#endif
386 }
375 else if (!strcmp (var, "enable-udp")) 387 else if (!strcmp (var, "enable-udp"))
376 { 388 {
377 u8 v; parse_bool (v, "enable-udp" , PROT_UDPv4, 0); node->protocols = (node->protocols & ~PROT_UDPv4) | v; 389 u8 v; parse_bool (v, "enable-udp" , PROT_UDPv4, 0); node->protocols = (node->protocols & ~PROT_UDPv4) | v;
378 } 390 }
379 else if (!strcmp (var, "enable-rawip")) 391 else if (!strcmp (var, "enable-rawip"))
380 { 392 {;
381 u8 v; parse_bool (v, "enable-rawip", PROT_IPv4, 0); node->protocols = (node->protocols & ~PROT_IPv4 ) | v; 393 u8 v; parse_bool (v, "enable-rawip", PROT_IPv4, 0); node->protocols = (node->protocols & ~PROT_IPv4 ) | v;
382 } 394 }
383 395
384 // unknown or misplaced 396 // unknown or misplaced
385 else 397 else
… …
391 fclose (f); 403 fclose (f);
392 } 404 }
393 else 405 else
394 { 406 {
395 slog (L_ERR, _("unable to read config file '%s': %s"), fname, strerror (errno)); 407 slog (L_ERR, _("unable to read config file '%s': %s"), fname, strerror (errno));
396 exit (1); 408 exit (EXIT_FAILURE);
397 } 409 }
398 410
399 free (fname); 411 free (fname);
400 412
401 fname = config_filename (prikeyfile, "hostkey"); 413 fname = config_filename (prikeyfile, "hostkey");
… …
407 419
408 if (!PEM_read_RSAPrivateKey (f, &rsa_key, NULL, NULL)) 420 if (!PEM_read_RSAPrivateKey (f, &rsa_key, NULL, NULL))
409 { 421 {
410 ERR_load_RSA_strings (); ERR_load_PEM_strings (); 422 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)); 423 slog (L_ERR, _("unable to read private rsa key file '%s': %s"), fname, ERR_error_string (ERR_get_error (), 0));
412 exit (1); 424 exit (EXIT_FAILURE);
413 } 425 }
414 426
415 RSA_blinding_on (rsa_key, 0); 427 require (RSA_blinding_on (rsa_key, 0));
416 428
417 fclose (f); 429 fclose (f);
418 } 430 }
419 else 431 else
420 { 432 {
421 slog (need_keys ? L_ERR : L_NOTICE, _("unable to open private rsa key file '%s': %s"), fname, strerror (errno)); 433 slog (need_keys ? L_ERR : L_NOTICE, _("unable to open private rsa key file '%s': %s"), fname, strerror (errno));
422 434
423 if (need_keys) 435 if (need_keys)
424 exit (1); 436 exit (EXIT_FAILURE);
425 } 437 }
438
439 if (need_keys && ::thisnode
440 && rsa_key && thisnode && thisnode->rsa_key)
441 if (BN_cmp (rsa_key->n, thisnode->rsa_key->n) != 0
442 || BN_cmp (rsa_key->e, thisnode->rsa_key->e) != 0)
443 {
444 slog (L_NOTICE, _("private hostkey and public node key mismatch: is '%s' the correct node?"), ::thisnode);
445 exit (EXIT_FAILURE);
446 }
426 447
427 free (fname); 448 free (fname);
428} 449}
429 450
430char *configuration::config_filename (const char *name, const char *dflt) 451char *configuration::config_filename (const char *name, const char *dflt)

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