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Comparing gvpe/src/conf.C (file contents):
Revision 1.2 by pcg, Thu Mar 6 18:43:07 2003 UTC vs.
Revision 1.38 by pcg, Wed Mar 23 17:03:58 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) 2003-2005 Marc Lehmann <gvpe@schmorp.de>
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
5 This file is part of GVPE.
6
9 This program is free software; you can redistribute it and/or modify 7 GVPE is free software; you can redistribute it and/or modify
10 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
11 the Free Software Foundation; either version 2 of the License, or 9 the Free Software Foundation; either version 2 of the License, or
12 (at your option) any later version. 10 (at your option) any later version.
13 11
14 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,
15 but WITHOUT ANY WARRANTY; without even the implied warranty of 13 but WITHOUT ANY WARRANTY; without even the implied warranty of
16 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17 GNU General Public License for more details. 15 GNU General Public License for more details.
18 16
19 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
20 along with this program; if not, write to the Free Software 18 along with gvpe; if not, write to the Free Software
21 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
22*/ 20*/
23 21
24#include "config.h" 22#include "config.h"
25 23
… …
31#include <netdb.h> 29#include <netdb.h>
32#include <sys/stat.h> 30#include <sys/stat.h>
33#include <sys/types.h> 31#include <sys/types.h>
34#include <unistd.h> 32#include <unistd.h>
35 33
34#include "netcompat.h"
35
36#include <openssl/err.h> 36#include <openssl/err.h>
37#include <openssl/pem.h> 37#include <openssl/pem.h>
38#include <openssl/rsa.h> 38#include <openssl/rsa.h>
39#include <openssl/rand.h> 39#include <openssl/rand.h>
40 40#include <openssl/bn.h>
41#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{
61 cleanup ();
62}
63
64void configuration::init ()
65{
66 memset (this, 0, sizeof (*this));
67
68 rekey = DEFAULT_REKEY;
69 keepalive = DEFAULT_KEEPALIVE;
70 llevel = L_INFO;
71
72 default_node.port = DEFAULT_PORT;
73 default_node.connectmode = conf_node::C_ALWAYS;
74 default_node.compress = true;
75}
76
77void configuration::cleanup()
78{
79 if (rsa_key)
80 RSA_free (rsa_key);
81
82 free (ifname);
83
84 rsa_key = 0;
85 ifname = 0;
86}
87
88void
89configuration::clear_config ()
90{
91 for (configuration::node_vector::iterator i = nodes.begin(); i != nodes.end(); ++i)
92 delete *i;
93
94 nodes.clear ();
95
96 cleanup ();
97 init ();
98}
99
100void configuration::read_config (bool need_keys)
101{
102 char *fname;
103 FILE *f;
104
105 clear_config ();
106
107 asprintf (&fname, "%s/vped.conf", confbase);
108 f = fopen (fname, "r");
109
110 if (f)
111 {
112 char line[16384];
113 int lineno = 0;
114 char *var, *val;
115 conf_node *node = &default_node;
116
117 while (fgets (line, sizeof (line), f))
118 {
119 lineno++;
120
121 {
122 char *end = line + strlen (line);
123
124 while (*end < ' ' && end >= line)
125 end--;
126
127 *++end = 0;
128 }
129
130 char *tok = line;
131
132retry:
133 var = strtok (tok, "\t =");
134 tok = 0;
135
136 if (!var || !var[0])
137 continue; /* no tokens on this line */
138
139 if (var[0] == '#')
140 continue; /* comment: ignore */
141
142 val = strtok (NULL, "\t\n\r =");
143
144 if (!val || val[0] == '#')
145 {
146 slog (L_WARN,
147 _("no value for variable `%s', at '%s' line %d"),
148 var, fname, lineno);
149 break;
150 }
151
152 if (!strcmp (var, "on"))
153 {
154 if (!::thisnode
155 || (val[0] == '!' && strcmp (val + 1, ::thisnode))
156 || !strcmp (val, ::thisnode))
157 goto retry;
158
159 continue;
160 }
161
162 // truly global
163 if (!strcmp (var, "loglevel"))
164 {
165 loglevel l = string_to_loglevel (val);
166
167 if (l != L_NONE)
168 llevel = l;
169 else
170 slog (L_WARN, "'%s': %s, at '%s' line %d", val, UNKNOWN_LOGLEVEL, fname, line);
171 }
172
173 // per config
174 else if (!strcmp (var, "node"))
175 {
176 default_node.id++;
177
178 node = new conf_node (default_node);
179
180 nodes.push_back (node);
181
182 node->nodename = strdup (val);
183
184 {
185 char *fname;
186 FILE *f;
187
188 asprintf (&fname, "%s/pubkey/%s", confbase, node->nodename);
189
190 f = fopen (fname, "r");
191 if (f)
192 {
193 node->rsa_key = RSA_new ();
194
195 if (!PEM_read_RSAPublicKey(f, &node->rsa_key, NULL, NULL))
196 {
197 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));
199 exit (1);
200 }
201
202 RSA_blinding_on (node->rsa_key, 0);
203
204 fclose (f);
205 }
206 else
207 {
208 slog (need_keys ? L_ERR : L_NOTICE, _("unable to read public rsa key file '%s': %s"), fname, strerror (errno));
209
210 if (need_keys)
211 exit (1);
212 }
213
214 free (fname);
215 }
216
217 if (!::thisnode || !strcmp (node->nodename, ::thisnode))
218 thisnode = node;
219 }
220 else if (!strcmp (var, "private-key"))
221 prikeyfile = strdup (val);
222 else if (!strcmp (var, "ifpersist"))
223 {
224 if (!strcmp (val, "yes"))
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 }
233 else if (!strcmp (var, "ifname"))
234 ifname = strdup (val);
235 else if (!strcmp (var, "rekey"))
236 rekey = atoi (val);
237 else if (!strcmp (var, "keepalive"))
238 keepalive = atoi (val);
239 else if (!strcmp (var, "mtu"))
240 mtu = atoi (val);
241 else if (!strcmp (var, "if-up"))
242 script_if_up = strdup (val);
243 else if (!strcmp (var, "node-up"))
244 script_node_up = strdup (val);
245 else if (!strcmp (var, "node-down"))
246 script_node_down = strdup (val);
247
248 /* node-specific, non-defaultable */
249 else if (node != &default_node && !strcmp (var, "hostname"))
250 {
251 free (node->hostname);
252 node->hostname = strdup (val);
253 }
254
255 /* node-specific, defaultable */
256 else if (!strcmp (var, "port"))
257 node->port = atoi (val);
258 else if (!strcmp (var, "router-priority"))
259 node->routerprio = atoi (val);
260 else if (!strcmp (var, "connect"))
261 {
262 if (!strcmp (val, "ondemand"))
263 node->connectmode = conf_node::C_ONDEMAND;
264 else if (!strcmp (val, "never"))
265 node->connectmode = conf_node::C_NEVER;
266 else if (!strcmp (val, "always"))
267 node->connectmode = conf_node::C_ALWAYS;
268 else
269 slog (L_WARN,
270 _("illegal value for 'connectmode', use one of 'ondemand', 'never' or 'always', at '%s' line %d"),
271 var, fname, lineno);
272 }
273 else if (!strcmp (var, "compress"))
274 {
275 if (!strcmp (val, "yes"))
276 node->compress = true;
277 else if (!strcmp (val, "no"))
278 node->compress = false;
279 else
280 slog (L_WARN,
281 _("illegal value for 'compress', only 'yes' or 'no' allowed, at '%s' line %d"),
282 var, fname, lineno);
283 }
284
285 // unknown or misplaced
286 else
287 {
288 slog (L_WARN,
289 _("unknown or misplaced variable `%s', at '%s' line %d"),
290 var, fname, lineno);
291 }
292 }
293
294 fclose (f);
295 }
296 else
297 {
298 slog (L_ERR, _("unable to read config file '%s': %s"), fname, strerror (errno));
299 exit (1);
300 }
301
302 free (fname);
303
304 fname = config_filename (prikeyfile, "hostkey");
305
306 f = fopen (fname, "r");
307 if (f)
308 {
309 rsa_key = RSA_new ();
310
311 if (!PEM_read_RSAPrivateKey (f, &rsa_key, NULL, NULL))
312 {
313 ERR_load_RSA_strings (); ERR_load_PEM_strings ();
314 slog (L_ERR, _("unable to read private rsa key file '%s': %s"), fname, ERR_error_string (ERR_get_error (), 0));
315 exit (1);
316 }
317
318 RSA_blinding_on (rsa_key, 0);
319
320 fclose (f);
321 }
322 else
323 {
324 slog (need_keys ? L_ERR : L_NOTICE, _("unable to open private rsa key file '%s': %s"), fname, strerror (errno));
325
326 if (need_keys)
327 exit (1);
328 }
329
330 free (fname);
331}
332
333char *configuration::config_filename (const char *name, const char *dflt)
334{
335 char *fname;
336
337 asprintf (&fname, name ? name : dflt, ::thisnode);
338
339 if (!ABSOLUTE_PATH (fname))
340 {
341 char *rname = fname;
342 asprintf (&fname, "%s/%s", confbase, rname);
343 free (rname);
344 }
345
346 return fname; 60 return 0;
347} 61}
348 62
349void 63const char *strprotocol (u8 protocol)
350configuration::print ()
351{ 64{
352 printf (_("\nConfiguration\n\n")); 65 if (protocol & PROT_IPv4 ) return "rawip";
353 printf (_("# of nodes: %d\n"), nodes.size ()); 66 if (protocol & PROT_ICMPv4) return "icmp";
354 printf (_("this node: %s\n"), thisnode ? thisnode->nodename : "<unset>"); 67 if (protocol & PROT_UDPv4 ) return "udp";
355 printf (_("MTU: %d\n"), mtu); 68 if (protocol & PROT_TCPv4 ) return "tcp";
356 printf (_("rekeying interval: %d\n"), rekey); 69 if (protocol & PROT_DNSv4 ) return "dns";
357 printf (_("keepalive interval: %d\n"), keepalive);
358 printf (_("interface: %s\n"), ifname);
359 printf (_("primary rsa key: %s\n"), prikeyfile ? prikeyfile : "<default>");
360 printf (_("rsa key size: %d\n"), rsa_key ? RSA_size (rsa_key) : -1);
361 printf ("\n");
362 70
363 printf ("%4s %-17s %s %-8.8s %-10.10s %s\n", 71 return "<unknown>";
364 _("ID#"), _("MAC"), _("Com"), _("Conmode"), _("Node"), _("Host:Port"));
365
366 for (node_vector::iterator i = nodes.begin (); i != nodes.end (); ++i)
367 (*i)->print ();
368
369 printf ("\n");
370} 72}
371 73
372void 74void
373conf_node::print () 75conf_node::print ()
374{ 76{
… …
380 connectmode == C_NEVER ? "never" : 82 connectmode == C_NEVER ? "never" :
381 connectmode == C_ALWAYS ? "always" : "", 83 connectmode == C_ALWAYS ? "always" : "",
382 nodename, 84 nodename,
383 hostname ? hostname : "", 85 hostname ? hostname : "",
384 hostname ? ":" : "", 86 hostname ? ":" : "",
385 hostname ? port : 0 87 hostname ? udp_port : 0
386 ); 88 );
387} 89}
388 90
91conf_node::~conf_node ()
92{
93 if (rsa_key)
94 RSA_free (rsa_key);
95
96 free (nodename);
97 free (hostname);
98#if ENABLE_DNS
99 free (domain);
100 free (dns_hostname);
101#endif
102}
103
104void configuration::init ()
105{
106 memset (this, 0, sizeof (*this));
107
108 mtu = DEFAULT_MTU;
109 rekey = DEFAULT_REKEY;
110 keepalive = DEFAULT_KEEPALIVE;
111 llevel = L_INFO;
112 ip_proto = IPPROTO_GRE;
113#if ENABLE_ICMP
114 icmp_type = ICMP_ECHOREPLY;
115#endif
116
117 default_node.udp_port = DEFAULT_UDPPORT;
118 default_node.tcp_port = DEFAULT_UDPPORT; // ehrm
119 default_node.connectmode = conf_node::C_ALWAYS;
120 default_node.compress = true;
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
127 dns_forw_host = strdup ("127.0.0.1");
128 dns_forw_port = 53;
129 dns_timeout_factor = DEFAULT_DNS_TIMEOUT_FACTOR;
130 dns_send_interval = DEFAULT_DNS_SEND_INTERVAL;
131 dns_overlap_factor = DEFAULT_DNS_OVERLAP_FACTOR;
132 dns_max_outstanding = DEFAULT_DNS_MAX_OUTSTANDING;
133#endif
134
135 conf.pidfilename = strdup (LOCALSTATEDIR "/run/gvpe.pid");
136}
137
138void configuration::cleanup()
139{
140 if (rsa_key)
141 RSA_free (rsa_key);
142
143 rsa_key = 0;
144
145 free (pidfilename); pidfilename = 0;
146 free (ifname); ifname = 0;
147#if ENABLE_HTTP_PROXY
148 free (proxy_host); proxy_host = 0;
149 free (proxy_auth); proxy_auth = 0;
150#endif
151#if ENABLE_DNS
152 free (dns_forw_host); dns_forw_host = 0;
153#endif
154}
155
156void
157configuration::clear_config ()
158{
159 for (configuration::node_vector::iterator i = nodes.begin(); i != nodes.end(); ++i)
160 delete *i;
161
162 nodes.clear ();
163
164 cleanup ();
165 init ();
166}
167
168#define parse_bool(target,name,trueval,falseval) do { \
169 if (!strcmp (val, "yes")) target = trueval; \
170 else if (!strcmp (val, "no")) target = falseval; \
171 else if (!strcmp (val, "true")) target = trueval; \
172 else if (!strcmp (val, "false")) target = falseval; \
173 else if (!strcmp (val, "on")) target = trueval; \
174 else if (!strcmp (val, "off")) target = falseval; \
175 else \
176 slog (L_WARN, \
177 _("illegal value for '%s', only 'yes|true|on' or 'no|false|off' allowed, at '%s' line %d"), \
178 name, var, fname, lineno); \
179} while (0)
180
181void configuration::read_config (bool need_keys)
182{
183 char *fname;
184 FILE *f;
185
186 clear_config ();
187
188 asprintf (&fname, "%s/gvpe.conf", confbase);
189 f = fopen (fname, "r");
190
191 if (f)
192 {
193 char line[16384];
194 int lineno = 0;
195 char *var, *val;
196 conf_node *node = &default_node;
197
198 while (fgets (line, sizeof (line), f))
199 {
200 lineno++;
201
202 {
203 char *end = line + strlen (line);
204
205 while (*end < ' ' && end >= line)
206 end--;
207
208 *++end = 0;
209 }
210
211 char *tok = line;
212
213retry:
214 var = strtok (tok, "\t =");
215 tok = 0;
216
217 if (!var || !var[0])
218 continue; /* no tokens on this line */
219
220 if (var[0] == '#')
221 continue; /* comment: ignore */
222
223 val = strtok (NULL, "\t\n\r =");
224
225 if (!val || val[0] == '#')
226 {
227 slog (L_WARN,
228 _("no value for variable `%s', at '%s' line %d, skipping."),
229 var, fname, lineno);
230 continue;
231 }
232
233 if (!strcmp (var, "on"))
234 {
235 if (!::thisnode
236 || (val[0] == '!' && strcmp (val + 1, ::thisnode))
237 || !strcmp (val, ::thisnode))
238 goto retry;
239
240 continue;
241 }
242
243 // truly global
244 if (!strcmp (var, "loglevel"))
245 {
246 loglevel l = string_to_loglevel (val);
247
248 if (l != L_NONE)
249 llevel = l;
250 else
251 slog (L_WARN, "'%s': %s, at '%s' line %d", val, UNKNOWN_LOGLEVEL, fname, line);
252 }
253 else if (!strcmp (var, "ip-proto"))
254 ip_proto = atoi (val);
255 else if (!strcmp (var, "icmp-type"))
256 {
257#if ENABLE_ICMP
258 icmp_type = atoi (val);
259#endif
260 }
261
262 // per config
263 else if (!strcmp (var, "node"))
264 {
265 default_node.id++;
266
267 node = new conf_node (default_node);
268
269 nodes.push_back (node);
270
271 node->nodename = strdup (val);
272
273 {
274 char *fname;
275 FILE *f;
276
277 asprintf (&fname, "%s/pubkey/%s", confbase, node->nodename);
278
279 f = fopen (fname, "r");
280 if (f)
281 {
282 node->rsa_key = RSA_new ();
283
284 if (!PEM_read_RSAPublicKey(f, &node->rsa_key, NULL, NULL))
285 {
286 ERR_load_RSA_strings (); ERR_load_PEM_strings ();
287 slog (L_ERR, _("unable to open public rsa key file '%s': %s"), fname, ERR_error_string (ERR_get_error (), 0));
288 exit (EXIT_FAILURE);
289 }
290
291 require (RSA_blinding_on (node->rsa_key, 0));
292
293 fclose (f);
294 }
295 else
296 {
297 slog (need_keys ? L_ERR : L_NOTICE, _("unable to read public rsa key file '%s': %s"), fname, strerror (errno));
298
299 if (need_keys)
300 exit (EXIT_FAILURE);
301 }
302
303 free (fname);
304 }
305
306 if (::thisnode && !strcmp (node->nodename, ::thisnode))
307 thisnode = node;
308 }
309 else if (!strcmp (var, "private-key"))
310 free (prikeyfile), prikeyfile = strdup (val);
311 else if (!strcmp (var, "ifpersist"))
312 parse_bool (ifpersist, "ifpersist", true, false);
313 else if (!strcmp (var, "ifname"))
314 free (ifname), ifname = strdup (val);
315 else if (!strcmp (var, "rekey"))
316 rekey = atoi (val);
317 else if (!strcmp (var, "keepalive"))
318 keepalive = atoi (val);
319 else if (!strcmp (var, "mtu"))
320 mtu = atoi (val);
321 else if (!strcmp (var, "if-up"))
322 free (script_if_up), script_if_up = strdup (val);
323 else if (!strcmp (var, "node-up"))
324 free (script_node_up), script_node_up = strdup (val);
325 else if (!strcmp (var, "node-down"))
326 free (script_node_down), script_node_down = strdup (val);
327 else if (!strcmp (var, "pid-file"))
328 free (pidfilename), pidfilename = strdup (val);
329 else if (!strcmp (var, "dns-forw-host"))
330 {
331#if ENABLE_DNS
332 free (dns_forw_host), dns_forw_host = strdup (val);
333#endif
334 }
335 else if (!strcmp (var, "dns-forw-port"))
336 {
337#if ENABLE_DNS
338 dns_forw_port = atoi (val);
339#endif
340 }
341 else if (!strcmp (var, "dns-timeout-factor"))
342 {
343#if ENABLE_DNS
344 dns_timeout_factor = atof (val);
345#endif
346 }
347 else if (!strcmp (var, "dns-send-interval"))
348 {
349#if ENABLE_DNS
350 dns_send_interval = atoi (val);
351#endif
352 }
353 else if (!strcmp (var, "dns-overlap-factor"))
354 {
355#if ENABLE_DNS
356 dns_overlap_factor = atof (val);
357#endif
358 }
359 else if (!strcmp (var, "dns-max-outstanding"))
360 {
361#if ENABLE_DNS
362 dns_max_outstanding = atoi (val);
363#endif
364 }
365 else if (!strcmp (var, "http-proxy-host"))
366 {
367#if ENABLE_HTTP_PROXY
368 free (proxy_host), proxy_host = strdup (val);
369#endif
370 }
371 else if (!strcmp (var, "http-proxy-port"))
372 {
373#if ENABLE_HTTP_PROXY
374 proxy_port = atoi (val);
375#endif
376 }
377 else if (!strcmp (var, "http-proxy-auth"))
378 {
379#if ENABLE_HTTP_PROXY
380 proxy_auth = (char *)base64_encode ((const u8 *)val, strlen (val));
381#endif
382 }
383
384 /* node-specific, non-defaultable */
385 else if (node != &default_node && !strcmp (var, "hostname"))
386 free (node->hostname), node->hostname = strdup (val);
387
388 /* node-specific, defaultable */
389 else if (!strcmp (var, "udp-port"))
390 node->udp_port = atoi (val);
391 else if (!strcmp (var, "tcp-port"))
392 node->tcp_port = atoi (val);
393 else if (!strcmp (var, "dns-hostname"))
394 {
395#if ENABLE_DNS
396 free (node->dns_hostname), node->dns_hostname = strdup (val);
397#endif
398 }
399 else if (!strcmp (var, "dns-port"))
400 {
401#if ENABLE_DNS
402 node->dns_port = atoi (val);
403#endif
404 }
405 else if (!strcmp (var, "dns-domain"))
406 {
407#if ENABLE_DNS
408 free (node->domain), node->domain = strdup (val);
409#endif
410 }
411 else if (!strcmp (var, "router-priority"))
412 node->routerprio = atoi (val);
413 else if (!strcmp (var, "max-retry"))
414 node->max_retry = atoi (val);
415 else if (!strcmp (var, "connect"))
416 {
417 if (!strcmp (val, "ondemand"))
418 node->connectmode = conf_node::C_ONDEMAND;
419 else if (!strcmp (val, "never"))
420 node->connectmode = conf_node::C_NEVER;
421 else if (!strcmp (val, "always"))
422 node->connectmode = conf_node::C_ALWAYS;
423 else if (!strcmp (val, "disabled"))
424 node->connectmode = conf_node::C_DISABLED;
425 else
426 slog (L_WARN,
427 _("illegal value for 'connectmode', use one of 'ondemand', 'never', 'always' or 'disabled', at '%s' line %d, ignoring."),
428 var, fname, lineno);
429 }
430 else if (!strcmp (var, "inherit-tos"))
431 parse_bool (node->inherit_tos, "inherit-tos", true, false);
432 else if (!strcmp (var, "compress"))
433 parse_bool (node->compress, "compress", true, false);
434 // all these bool options really really cost a lot of executable size!
435 else if (!strcmp (var, "enable-tcp"))
436 {
437#if ENABLE_TCP
438 u8 v; parse_bool (v, "enable-tcp" , PROT_TCPv4, 0); node->protocols = (node->protocols & ~PROT_TCPv4) | v;
439#endif
440 }
441 else if (!strcmp (var, "enable-icmp"))
442 {
443#if ENABLE_ICMP
444 u8 v; parse_bool (v, "enable-icmp" , PROT_ICMPv4, 0); node->protocols = (node->protocols & ~PROT_ICMPv4) | v;
445#endif
446 }
447 else if (!strcmp (var, "enable-dns"))
448 {
449#if ENABLE_DNS
450 u8 v; parse_bool (v, "enable-dns" , PROT_DNSv4, 0); node->protocols = (node->protocols & ~PROT_DNSv4) | v;
451#endif
452 }
453 else if (!strcmp (var, "enable-udp"))
454 {
455 u8 v; parse_bool (v, "enable-udp" , PROT_UDPv4, 0); node->protocols = (node->protocols & ~PROT_UDPv4) | v;
456 }
457 else if (!strcmp (var, "enable-rawip"))
458 {
459 u8 v; parse_bool (v, "enable-rawip", PROT_IPv4, 0); node->protocols = (node->protocols & ~PROT_IPv4 ) | v;
460 }
461
462 // unknown or misplaced
463 else
464 slog (L_WARN,
465 _("unknown or misplaced variable `%s', at '%s' line %d, skipping."),
466 var, fname, lineno);
467 }
468
469 fclose (f);
470 }
471 else
472 {
473 slog (L_ERR, _("unable to read config file '%s': %s"), fname, strerror (errno));
474 exit (EXIT_FAILURE);
475 }
476
477 free (fname);
478
479 fname = config_filename (prikeyfile, "hostkey");
480
481 f = fopen (fname, "r");
482 if (f)
483 {
484 rsa_key = RSA_new ();
485
486 if (!PEM_read_RSAPrivateKey (f, &rsa_key, NULL, NULL))
487 {
488 ERR_load_RSA_strings (); ERR_load_PEM_strings ();
489 slog (L_ERR, _("unable to read private rsa key file '%s': %s"), fname, ERR_error_string (ERR_get_error (), 0));
490 exit (EXIT_FAILURE);
491 }
492
493 require (RSA_blinding_on (rsa_key, 0));
494
495 fclose (f);
496 }
497 else
498 {
499 slog (need_keys ? L_ERR : L_NOTICE, _("unable to open private rsa key file '%s': %s"), fname, strerror (errno));
500
501 if (need_keys)
502 exit (EXIT_FAILURE);
503 }
504
505 if (need_keys && ::thisnode
506 && rsa_key && thisnode && thisnode->rsa_key)
507 if (BN_cmp (rsa_key->n, thisnode->rsa_key->n) != 0
508 || BN_cmp (rsa_key->e, thisnode->rsa_key->e) != 0)
509 {
510 slog (L_NOTICE, _("private hostkey and public node key mismatch: is '%s' the correct node?"), ::thisnode);
511 exit (EXIT_FAILURE);
512 }
513
514 free (fname);
515}
516
517char *configuration::config_filename (const char *name, const char *dflt)
518{
519 char *fname;
520
521 asprintf (&fname, name ? name : dflt, ::thisnode);
522
523 if (!ABSOLUTE_PATH (fname))
524 {
525 char *rname = fname;
526 asprintf (&fname, "%s/%s", confbase, rname);
527 free (rname);
528 }
529
530 return fname;
531}
532
533void
534configuration::print ()
535{
536 printf (_("\nConfiguration\n\n"));
537 printf (_("# of nodes: %d\n"), nodes.size ());
538 printf (_("this node: %s\n"), thisnode ? thisnode->nodename : "<unset>");
539 printf (_("MTU: %d\n"), mtu);
540 printf (_("rekeying interval: %d\n"), rekey);
541 printf (_("keepalive interval: %d\n"), keepalive);
542 printf (_("interface: %s\n"), ifname);
543 printf (_("primary rsa key: %s\n"), prikeyfile ? prikeyfile : "<default>");
544 printf (_("rsa key size: %d\n"), rsa_key ? RSA_size (rsa_key) * 8 : -1);
545 printf ("\n");
546
547 printf ("%4s %-17s %s %-8.8s %-10.10s %s\n",
548 _("ID#"), _("MAC"), _("Com"), _("Conmode"), _("Node"), _("Host:Port"));
549
550 for (node_vector::iterator i = nodes.begin (); i != nodes.end (); ++i)
551 (*i)->print ();
552
553 printf ("\n");
554}
555
556configuration::configuration ()
557{
558 asprintf (&confbase, "%s/gvpe", CONFDIR);
559
560 init ();
561}
562
563configuration::~configuration ()
564{
565 cleanup ();
566}
567
568

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