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Comparing gvpe/src/conf.C (file contents):
Revision 1.4 by pcg, Sun Mar 23 14:49:16 2003 UTC vs.
Revision 1.29 by pcg, Tue Mar 1 06:27:20 2005 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
32#include "netcompat.h"
33
36#include <openssl/err.h> 34#include <openssl/err.h>
37#include <openssl/pem.h> 35#include <openssl/pem.h>
38#include <openssl/rsa.h> 36#include <openssl/rsa.h>
39#include <openssl/rand.h> 37#include <openssl/rand.h>
38#include <openssl/bn.h>
40 39
41#include "gettext.h" 40#include "gettext.h"
42 41
43#include "conf.h" 42#include "conf.h"
44#include "slog.h" 43#include "slog.h"
45#include "util.h" 44#include "util.h"
46 45
47char *confbase; 46char *confbase;
48char *thisnode; 47char *thisnode;
49char *identname; 48char *identname;
50char *pidfilename;
51 49
52struct configuration conf; 50struct configuration conf;
53 51
54configuration::configuration () 52u8 best_protocol (u8 protset)
55{ 53{
56 init (); 54 if (protset & PROT_IPv4 ) return PROT_IPv4;
57} 55 if (protset & PROT_ICMPv4) return PROT_ICMPv4;
56 if (protset & PROT_UDPv4 ) return PROT_UDPv4;
57 if (protset & PROT_TCPv4 ) return PROT_TCPv4;
58 if (protset & PROT_DNSv4 ) return PROT_DNSv4;
58 59
59configuration::~configuration () 60 return 0;
61}
62
63const char *strprotocol (u8 protocol)
60{ 64{
61 cleanup (); 65 if (protocol & PROT_IPv4 ) return "rawip";
66 if (protocol & PROT_ICMPv4) return "icmp";
67 if (protocol & PROT_UDPv4 ) return "udp";
68 if (protocol & PROT_TCPv4 ) return "tcp";
69 if (protocol & PROT_DNSv4 ) return "dns";
70
71 return "<unknown>";
72}
73
74void
75conf_node::print ()
76{
77 printf ("%4d fe:fd:80:00:0%1x:%02x %c %-8.8s %-10.10s %s%s%d\n",
78 id,
79 id >> 8, id & 0xff,
80 compress ? 'Y' : 'N',
81 connectmode == C_ONDEMAND ? "ondemand" :
82 connectmode == C_NEVER ? "never" :
83 connectmode == C_ALWAYS ? "always" : "",
84 nodename,
85 hostname ? hostname : "",
86 hostname ? ":" : "",
87 hostname ? udp_port : 0
88 );
89}
90
91conf_node::~conf_node ()
92{
93 if (rsa_key)
94 RSA_free (rsa_key);
95
96 free (nodename);
97 free (hostname);
98 free (domain);
62} 99}
63 100
64void configuration::init () 101void configuration::init ()
65{ 102{
66 memset (this, 0, sizeof (*this)); 103 memset (this, 0, sizeof (*this));
67 104
105 mtu = DEFAULT_MTU;
68 rekey = DEFAULT_REKEY; 106 rekey = DEFAULT_REKEY;
69 keepalive = DEFAULT_KEEPALIVE; 107 keepalive = DEFAULT_KEEPALIVE;
70 llevel = L_INFO; 108 llevel = L_INFO;
109 ip_proto = IPPROTO_GRE;
110#if ENABLE_ICMP
111 icmp_type = ICMP_ECHOREPLY;
112#endif
71 113
72 default_node.port = DEFAULT_PORT; 114 default_node.udp_port = DEFAULT_UDPPORT;
115 default_node.tcp_port = DEFAULT_UDPPORT; // ehrm
73 default_node.connectmode = conf_node::C_ALWAYS; 116 default_node.connectmode = conf_node::C_ALWAYS;
74 default_node.compress = true; 117 default_node.compress = true;
118 default_node.protocols = 0;
119 default_node.max_retry = DEFAULT_MAX_RETRY;
120
121 conf.pidfilename = strdup (LOCALSTATEDIR "/run/gvpe.pid");
75} 122}
76 123
77void configuration::cleanup() 124void configuration::cleanup()
78{ 125{
79 if (rsa_key) 126 if (rsa_key)
80 RSA_free (rsa_key); 127 RSA_free (rsa_key);
81 128
82 free (ifname);
83
84 rsa_key = 0; 129 rsa_key = 0;
85 ifname = 0; 130
131 free (pidfilename); pidfilename = 0;
132 free (ifname); ifname = 0;
133#if ENABLE_HTTP_PROXY
134 free (proxy_host); proxy_host = 0;
135 free (proxy_auth); proxy_auth = 0;
136#endif
137#if ENABLE_DNS
138 free (dns_forw_host); dns_forw_host = 0;
139#endif
86} 140}
87 141
88void 142void
89configuration::clear_config () 143configuration::clear_config ()
90{ 144{
… …
95 149
96 cleanup (); 150 cleanup ();
97 init (); 151 init ();
98} 152}
99 153
154#define parse_bool(target,name,trueval,falseval) \
155 if (!strcmp (val, "yes")) target = trueval; \
156 else if (!strcmp (val, "no")) target = falseval; \
157 else if (!strcmp (val, "true")) target = trueval; \
158 else if (!strcmp (val, "false")) target = falseval; \
159 else if (!strcmp (val, "on")) target = trueval; \
160 else if (!strcmp (val, "off")) target = falseval; \
161 else \
162 slog (L_WARN, \
163 _("illegal value for '%s', only 'yes|true|on' or 'no|false|off' allowed, at '%s' line %d"), \
164 name, var, fname, lineno);
165
100void configuration::read_config (bool need_keys) 166void configuration::read_config (bool need_keys)
101{ 167{
102 char *fname; 168 char *fname;
103 FILE *f; 169 FILE *f;
104 170
105 clear_config (); 171 clear_config ();
106 172
107 asprintf (&fname, "%s/vped.conf", confbase); 173 asprintf (&fname, "%s/gvpe.conf", confbase);
108 f = fopen (fname, "r"); 174 f = fopen (fname, "r");
109 175
110 if (f) 176 if (f)
111 { 177 {
112 char line[16384]; 178 char line[16384];
… …
167 if (l != L_NONE) 233 if (l != L_NONE)
168 llevel = l; 234 llevel = l;
169 else 235 else
170 slog (L_WARN, "'%s': %s, at '%s' line %d", val, UNKNOWN_LOGLEVEL, fname, line); 236 slog (L_WARN, "'%s': %s, at '%s' line %d", val, UNKNOWN_LOGLEVEL, fname, line);
171 } 237 }
238 else if (!strcmp (var, "ip-proto"))
239 ip_proto = atoi (val);
240 else if (!strcmp (var, "icmp-type"))
241 {
242#if ENABLE_ICMP
243 icmp_type = atoi (val);
244#endif
245 }
172 246
173 // per config 247 // per config
174 else if (!strcmp (var, "node")) 248 else if (!strcmp (var, "node"))
175 { 249 {
176 default_node.id++; 250 default_node.id++;
… …
194 268
195 if (!PEM_read_RSAPublicKey(f, &node->rsa_key, NULL, NULL)) 269 if (!PEM_read_RSAPublicKey(f, &node->rsa_key, NULL, NULL))
196 { 270 {
197 ERR_load_RSA_strings (); ERR_load_PEM_strings (); 271 ERR_load_RSA_strings (); ERR_load_PEM_strings ();
198 slog (L_ERR, _("unable to open public rsa key file '%s': %s"), fname, ERR_error_string (ERR_get_error (), 0)); 272 slog (L_ERR, _("unable to open public rsa key file '%s': %s"), fname, ERR_error_string (ERR_get_error (), 0));
199 exit (1); 273 exit (EXIT_FAILURE);
200 } 274 }
201 275
202 RSA_blinding_on (node->rsa_key, 0); 276 require (RSA_blinding_on (node->rsa_key, 0));
203 277
204 fclose (f); 278 fclose (f);
205 } 279 }
206 else 280 else
207 { 281 {
208 slog (need_keys ? L_ERR : L_NOTICE, _("unable to read public rsa key file '%s': %s"), fname, strerror (errno)); 282 slog (need_keys ? L_ERR : L_NOTICE, _("unable to read public rsa key file '%s': %s"), fname, strerror (errno));
209 283
210 if (need_keys) 284 if (need_keys)
211 exit (1); 285 exit (EXIT_FAILURE);
212 } 286 }
213 287
214 free (fname); 288 free (fname);
215 } 289 }
216 290
217 if (!::thisnode || !strcmp (node->nodename, ::thisnode)) 291 if (::thisnode && !strcmp (node->nodename, ::thisnode))
218 thisnode = node; 292 thisnode = node;
219 } 293 }
220 else if (!strcmp (var, "private-key")) 294 else if (!strcmp (var, "private-key"))
221 prikeyfile = strdup (val); 295 free (prikeyfile), prikeyfile = strdup (val);
222 else if (!strcmp (var, "ifpersist")) 296 else if (!strcmp (var, "ifpersist"))
223 { 297 {
224 if (!strcmp (val, "yes")) 298 parse_bool (ifpersist, "ifpersist", true, false);
225 ifpersist = true;
226 else if (!strcmp (val, "no"))
227 ifpersist = false;
228 else
229 slog (L_WARN,
230 _("illegal value for 'ifpersist', only 'yes' or 'no' allowed, at '%s' line %d"),
231 var, fname, lineno);
232 } 299 }
233 else if (!strcmp (var, "ifname")) 300 else if (!strcmp (var, "ifname"))
234 ifname = strdup (val); 301 free (ifname), ifname = strdup (val);
235 else if (!strcmp (var, "rekey")) 302 else if (!strcmp (var, "rekey"))
236 rekey = atoi (val); 303 rekey = atoi (val);
237 else if (!strcmp (var, "keepalive")) 304 else if (!strcmp (var, "keepalive"))
238 keepalive = atoi (val); 305 keepalive = atoi (val);
239 else if (!strcmp (var, "mtu")) 306 else if (!strcmp (var, "mtu"))
240 mtu = atoi (val); 307 mtu = atoi (val);
241 else if (!strcmp (var, "if-up")) 308 else if (!strcmp (var, "if-up"))
242 script_if_up = strdup (val); 309 free (script_if_up), script_if_up = strdup (val);
243 else if (!strcmp (var, "node-up")) 310 else if (!strcmp (var, "node-up"))
244 script_node_up = strdup (val); 311 free (script_node_up), script_node_up = strdup (val);
245 else if (!strcmp (var, "node-down")) 312 else if (!strcmp (var, "node-down"))
246 script_node_down = strdup (val); 313 free (script_node_down), script_node_down = strdup (val);
314 else if (!strcmp (var, "pid-file"))
315 free (pidfilename), pidfilename = strdup (val);
316 else if (!strcmp (var, "dns-forw-host"))
317 {
318#if ENABLE_DNS
319 free (dns_forw_host), dns_forw_host = strdup (val);
320#endif
321 }
322 else if (!strcmp (var, "dns-forw-port"))
323 {
324#if ENABLE_DNS
325 dns_forw_port = atoi (val);
326#endif
327 }
328 else if (!strcmp (var, "http-proxy-host"))
329 {
330#if ENABLE_HTTP_PROXY
331 free (proxy_host), proxy_host = strdup (val);
332#endif
333 }
334 else if (!strcmp (var, "http-proxy-port"))
335 {
336#if ENABLE_HTTP_PROXY
337 proxy_port = atoi (val);
338#endif
339 }
340 else if (!strcmp (var, "http-proxy-auth"))
341 {
342#if ENABLE_HTTP_PROXY
343 proxy_auth = (char *)base64_encode ((const u8 *)val, strlen (val));
344#endif
345 }
247 346
248 /* node-specific, non-defaultable */ 347 /* node-specific, non-defaultable */
249 else if (node != &default_node && !strcmp (var, "hostname")) 348 else if (node != &default_node && !strcmp (var, "hostname"))
250 {
251 free (node->hostname);
252 node->hostname = strdup (val); 349 free (node->hostname), node->hostname = strdup (val);
253 }
254 350
255 /* node-specific, defaultable */ 351 /* node-specific, defaultable */
256 else if (!strcmp (var, "udp-port")) 352 else if (!strcmp (var, "udp-port"))
257 node->port = atoi (val); 353 node->udp_port = atoi (val);
258 else if (!strcmp (var, "port")) //deprecated 354 else if (!strcmp (var, "tcp-port"))
259 node->port = atoi (val); 355 node->tcp_port = atoi (val);
356 else if (!strcmp (var, "dns-port"))
357 {
358#if ENABLE_DNS
359 node->dns_port = atoi (val);
360#endif
361 }
362 else if (!strcmp (var, "dns-domain"))
363 {
364#if ENABLE_DNS
365 free (node->domain), node->domain = strdup (val);
366#endif
367 }
260 else if (!strcmp (var, "router-priority")) 368 else if (!strcmp (var, "router-priority"))
261 node->routerprio = atoi (val); 369 node->routerprio = atoi (val);
370 else if (!strcmp (var, "max-retry"))
371 node->max_retry = atoi (val);
262 else if (!strcmp (var, "connect")) 372 else if (!strcmp (var, "connect"))
263 { 373 {
264 if (!strcmp (val, "ondemand")) 374 if (!strcmp (val, "ondemand"))
265 node->connectmode = conf_node::C_ONDEMAND; 375 node->connectmode = conf_node::C_ONDEMAND;
266 else if (!strcmp (val, "never")) 376 else if (!strcmp (val, "never"))
… …
269 node->connectmode = conf_node::C_ALWAYS; 379 node->connectmode = conf_node::C_ALWAYS;
270 else if (!strcmp (val, "disabled")) 380 else if (!strcmp (val, "disabled"))
271 node->connectmode = conf_node::C_DISABLED; 381 node->connectmode = conf_node::C_DISABLED;
272 else 382 else
273 slog (L_WARN, 383 slog (L_WARN,
274 _("illegal value for 'connectmode', use one of 'ondemand', 'never', 'always' or 'disabled', at '%s' line %d"), 384 _("illegal value for 'connectmode', use one of 'ondemand', 'never', 'always' or 'disabled', at '%s' line %d"),
275 var, fname, lineno); 385 var, fname, lineno);
276 } 386 }
277 else if (!strcmp (var, "inherit-tos")) 387 else if (!strcmp (var, "inherit-tos"))
278 { 388 {
279 if (!strcmp (val, "yes")) 389 parse_bool (node->inherit_tos, "inherit-tos", true, false);
280 node->inherit_tos = true;
281 else if (!strcmp (val, "no"))
282 node->inherit_tos = false;
283 else 390 }
284 slog (L_WARN,
285 _("illegal value for 'compress', only 'yes' or 'no' allowed, at '%s' line %d"),
286 var, fname, lineno);
287 }
288
289 else if (!strcmp (var, "compress")) 391 else if (!strcmp (var, "compress"))
290 { 392 {
291 if (!strcmp (val, "yes")) 393 parse_bool (node->compress, "compress", true, false);
292 node->compress = true; 394 }
395 // all these bool options really really cost a lot of executable size!
396 else if (!strcmp (var, "enable-tcp"))
397 {
398#if ENABLE_TCP
399 u8 v; parse_bool (v, "enable-tcp" , PROT_TCPv4, 0); node->protocols = (node->protocols & ~PROT_TCPv4) | v;
400#endif
401 }
402 else if (!strcmp (var, "enable-icmp"))
403 {
404#if ENABLE_ICMP
405 u8 v; parse_bool (v, "enable-icmp" , PROT_ICMPv4, 0); node->protocols = (node->protocols & ~PROT_ICMPv4) | v;
406#endif
407 }
293 else if (!strcmp (val, "no")) 408 else if (!strcmp (var, "enable-dns"))
294 node->compress = false;
295 else 409 {
296 slog (L_WARN, 410#if ENABLE_DNS
297 _("illegal value for 'compress', only 'yes' or 'no' allowed, at '%s' line %d"), 411 u8 v; parse_bool (v, "enable-dns" , PROT_DNSv4, 0); node->protocols = (node->protocols & ~PROT_DNSv4) | v;
298 var, fname, lineno); 412#endif
413 }
414 else if (!strcmp (var, "enable-udp"))
415 {
416 u8 v; parse_bool (v, "enable-udp" , PROT_UDPv4, 0); node->protocols = (node->protocols & ~PROT_UDPv4) | v;
417 }
418 else if (!strcmp (var, "enable-rawip"))
419 {
420 u8 v; parse_bool (v, "enable-rawip", PROT_IPv4, 0); node->protocols = (node->protocols & ~PROT_IPv4 ) | v;
299 } 421 }
300 422
301 // unknown or misplaced 423 // unknown or misplaced
302 else 424 else
303 {
304 slog (L_WARN, 425 slog (L_WARN,
305 _("unknown or misplaced variable `%s', at '%s' line %d"), 426 _("unknown or misplaced variable `%s', at '%s' line %d"),
306 var, fname, lineno); 427 var, fname, lineno);
307 }
308 } 428 }
309 429
310 fclose (f); 430 fclose (f);
311 } 431 }
312 else 432 else
313 { 433 {
314 slog (L_ERR, _("unable to read config file '%s': %s"), fname, strerror (errno)); 434 slog (L_ERR, _("unable to read config file '%s': %s"), fname, strerror (errno));
315 exit (1); 435 exit (EXIT_FAILURE);
316 } 436 }
317 437
318 free (fname); 438 free (fname);
319 439
320 fname = config_filename (prikeyfile, "hostkey"); 440 fname = config_filename (prikeyfile, "hostkey");
… …
326 446
327 if (!PEM_read_RSAPrivateKey (f, &rsa_key, NULL, NULL)) 447 if (!PEM_read_RSAPrivateKey (f, &rsa_key, NULL, NULL))
328 { 448 {
329 ERR_load_RSA_strings (); ERR_load_PEM_strings (); 449 ERR_load_RSA_strings (); ERR_load_PEM_strings ();
330 slog (L_ERR, _("unable to read private rsa key file '%s': %s"), fname, ERR_error_string (ERR_get_error (), 0)); 450 slog (L_ERR, _("unable to read private rsa key file '%s': %s"), fname, ERR_error_string (ERR_get_error (), 0));
331 exit (1); 451 exit (EXIT_FAILURE);
332 } 452 }
333 453
334 RSA_blinding_on (rsa_key, 0); 454 require (RSA_blinding_on (rsa_key, 0));
335 455
336 fclose (f); 456 fclose (f);
337 } 457 }
338 else 458 else
339 { 459 {
340 slog (need_keys ? L_ERR : L_NOTICE, _("unable to open private rsa key file '%s': %s"), fname, strerror (errno)); 460 slog (need_keys ? L_ERR : L_NOTICE, _("unable to open private rsa key file '%s': %s"), fname, strerror (errno));
341 461
342 if (need_keys) 462 if (need_keys)
343 exit (1); 463 exit (EXIT_FAILURE);
344 } 464 }
465
466 if (need_keys && ::thisnode
467 && rsa_key && thisnode && thisnode->rsa_key)
468 if (BN_cmp (rsa_key->n, thisnode->rsa_key->n) != 0
469 || BN_cmp (rsa_key->e, thisnode->rsa_key->e) != 0)
470 {
471 slog (L_NOTICE, _("private hostkey and public node key mismatch: is '%s' the correct node?"), ::thisnode);
472 exit (EXIT_FAILURE);
473 }
345 474
346 free (fname); 475 free (fname);
347} 476}
348 477
349char *configuration::config_filename (const char *name, const char *dflt) 478char *configuration::config_filename (const char *name, const char *dflt)
… …
371 printf (_("MTU: %d\n"), mtu); 500 printf (_("MTU: %d\n"), mtu);
372 printf (_("rekeying interval: %d\n"), rekey); 501 printf (_("rekeying interval: %d\n"), rekey);
373 printf (_("keepalive interval: %d\n"), keepalive); 502 printf (_("keepalive interval: %d\n"), keepalive);
374 printf (_("interface: %s\n"), ifname); 503 printf (_("interface: %s\n"), ifname);
375 printf (_("primary rsa key: %s\n"), prikeyfile ? prikeyfile : "<default>"); 504 printf (_("primary rsa key: %s\n"), prikeyfile ? prikeyfile : "<default>");
376 printf (_("rsa key size: %d\n"), rsa_key ? RSA_size (rsa_key) : -1); 505 printf (_("rsa key size: %d\n"), rsa_key ? RSA_size (rsa_key) * 8 : -1);
377 printf ("\n"); 506 printf ("\n");
378 507
379 printf ("%4s %-17s %s %-8.8s %-10.10s %s\n", 508 printf ("%4s %-17s %s %-8.8s %-10.10s %s\n",
380 _("ID#"), _("MAC"), _("Com"), _("Conmode"), _("Node"), _("Host:Port")); 509 _("ID#"), _("MAC"), _("Com"), _("Conmode"), _("Node"), _("Host:Port"));
381 510
… …
383 (*i)->print (); 512 (*i)->print ();
384 513
385 printf ("\n"); 514 printf ("\n");
386} 515}
387 516
388void 517configuration::configuration ()
389conf_node::print ()
390{ 518{
391 printf ("%4d fe:fd:80:00:0%1x:%02x %c %-8.8s %-10.10s %s%s%d\n", 519 asprintf (&confbase, "%s/gvpe", CONFDIR);
392 id,
393 id >> 8, id & 0xff,
394 compress ? 'Y' : 'N',
395 connectmode == C_ONDEMAND ? "ondemand" :
396 connectmode == C_NEVER ? "never" :
397 connectmode == C_ALWAYS ? "always" : "",
398 nodename,
399 hostname ? hostname : "",
400 hostname ? ":" : "",
401 hostname ? port : 0
402 );
403}
404 520
521 init ();
522}
523
524configuration::~configuration ()
525{
526 cleanup ();
527}
528
529

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