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Comparing gvpe/src/conf.C (file contents):
Revision 1.1 by pcg, Sat Mar 1 15:53:03 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
71 default_node.port = DEFAULT_PORT;
72 default_node.connectmode = conf_node::C_ALWAYS;
73 default_node.compress = true;
74}
75
76void configuration::cleanup()
77{
78 if (rsa_key)
79 RSA_free (rsa_key);
80
81 free (ifname);
82
83 rsa_key = 0;
84 ifname = 0;
85}
86
87void
88configuration::clear_config ()
89{
90 for (configuration::node_vector::iterator i = nodes.begin(); i != nodes.end(); ++i)
91 delete *i;
92
93 nodes.clear ();
94
95 cleanup ();
96 init ();
97}
98
99void configuration::read_config (bool need_keys)
100{
101 char *fname;
102 FILE *f;
103
104 clear_config ();
105
106 asprintf (&fname, "%s/vped.conf", confbase);
107 f = fopen (fname, "r");
108
109 if (f)
110 {
111 char line[16384];
112 int lineno = 0;
113 char *var, *val;
114 conf_node *node = &default_node;
115
116 while (fgets (line, sizeof (line), f))
117 {
118 lineno++;
119
120 {
121 char *end = line + strlen (line);
122
123 while (*end < ' ' && end >= line)
124 end--;
125
126 *++end = 0;
127 }
128
129 char *tok = line;
130
131retry:
132 var = strtok (tok, "\t =");
133 tok = 0;
134
135 if (!var || !var[0])
136 continue; /* no tokens on this line */
137
138 if (var[0] == '#')
139 continue; /* comment: ignore */
140
141 val = strtok (NULL, "\t\n\r =");
142
143 if (!val || val[0] == '#')
144 {
145 slog (L_WARN,
146 _("no value for variable `%s', at '%s' line %d"),
147 var, fname, lineno);
148 break;
149 }
150
151 if (!strcmp (var, "on"))
152 {
153 if (!::thisnode
154 || (val[0] == '!' && strcmp (val + 1, ::thisnode))
155 || !strcmp (val, ::thisnode))
156 goto retry;
157
158 continue;
159 }
160
161 // truly global
162 if (!strcmp (var, "loglevel"))
163 {
164 loglevel l = string_to_loglevel (val);
165
166 if (l != L_NONE)
167 set_loglevel (l);
168 else
169 slog (L_WARN, "'%s': %s, at '%s' line %d", val, UNKNOWN_LOGLEVEL, fname, line);
170 }
171
172 // per config
173 else if (!strcmp (var, "node"))
174 {
175 default_node.id++;
176
177 node = new conf_node (default_node);
178
179 nodes.push_back (node);
180
181 node->nodename = strdup (val);
182
183 {
184 char *fname;
185 FILE *f;
186
187 asprintf (&fname, "%s/pubkey/%s", confbase, node->nodename);
188
189 f = fopen (fname, "r");
190 if (f)
191 {
192 node->rsa_key = RSA_new ();
193
194 if (!PEM_read_RSAPublicKey(f, &node->rsa_key, NULL, NULL))
195 {
196 ERR_load_RSA_strings (); ERR_load_PEM_strings ();
197 slog (L_ERR, _("unable to open public rsa key file '%s': %s"), fname, ERR_error_string (ERR_get_error (), 0));
198 exit (1);
199 }
200
201 RSA_blinding_on (node->rsa_key, 0);
202
203 fclose (f);
204 }
205 else
206 {
207 slog (need_keys ? L_ERR : L_NOTICE, _("unable to read public rsa key file '%s': %s"), fname, strerror (errno));
208
209 if (need_keys)
210 exit (1);
211 }
212
213 free (fname);
214 }
215
216 if (!::thisnode || !strcmp (node->nodename, ::thisnode))
217 thisnode = node;
218 }
219 else if (!strcmp (var, "private-key"))
220 prikeyfile = strdup (val);
221 else if (!strcmp (var, "ifpersist"))
222 {
223 if (!strcmp (val, "yes"))
224 ifpersist = true;
225 else if (!strcmp (val, "no"))
226 ifpersist = false;
227 else
228 slog (L_WARN,
229 _("illegal value for 'ifpersist', only 'yes' or 'no' allowed, at '%s' line %d"),
230 var, fname, lineno);
231 }
232 else if (!strcmp (var, "ifname"))
233 ifname = strdup (val);
234 else if (!strcmp (var, "rekey"))
235 rekey = atoi (val);
236 else if (!strcmp (var, "keepalive"))
237 keepalive = atoi (val);
238 else if (!strcmp (var, "mtu"))
239 mtu = atoi (val);
240 else if (!strcmp (var, "if-up"))
241 script_if_up = strdup (val);
242 else if (!strcmp (var, "node-up"))
243 script_node_up = strdup (val);
244 else if (!strcmp (var, "node-down"))
245 script_node_down = strdup (val);
246
247 /* node-specific, non-defaultable */
248 else if (node != &default_node && !strcmp (var, "hostname"))
249 {
250 free (node->hostname);
251 node->hostname = strdup (val);
252 }
253
254 /* node-specific, defaultable */
255 else if (!strcmp (var, "port"))
256 node->port = atoi (val);
257 else if (!strcmp (var, "router-priority"))
258 node->routerprio = atoi (val);
259 else if (!strcmp (var, "connect"))
260 {
261 if (!strcmp (val, "ondemand"))
262 node->connectmode = conf_node::C_ONDEMAND;
263 else if (!strcmp (val, "never"))
264 node->connectmode = conf_node::C_NEVER;
265 else if (!strcmp (val, "always"))
266 node->connectmode = conf_node::C_ALWAYS;
267 else
268 slog (L_WARN,
269 _("illegal value for 'connectmode', use one of 'ondemand', 'never' or 'always', at '%s' line %d"),
270 var, fname, lineno);
271 }
272 else if (!strcmp (var, "compress"))
273 {
274 if (!strcmp (val, "yes"))
275 node->compress = true;
276 else if (!strcmp (val, "no"))
277 node->compress = false;
278 else
279 slog (L_WARN,
280 _("illegal value for 'compress', only 'yes' or 'no' allowed, at '%s' line %d"),
281 var, fname, lineno);
282 }
283
284 // unknown or misplaced
285 else
286 {
287 slog (L_WARN,
288 _("unknown or misplaced variable `%s', at '%s' line %d"),
289 var, fname, lineno);
290 }
291 }
292
293 fclose (f);
294 }
295 else
296 {
297 slog (L_ERR, _("unable to read config file '%s': %s"), fname, strerror (errno));
298 exit (1);
299 }
300
301 free (fname);
302
303 fname = config_filename (prikeyfile, "hostkey");
304
305 f = fopen (fname, "r");
306 if (f)
307 {
308 rsa_key = RSA_new ();
309
310 if (!PEM_read_RSAPrivateKey (f, &rsa_key, NULL, NULL))
311 {
312 ERR_load_RSA_strings (); ERR_load_PEM_strings ();
313 slog (L_ERR, _("unable to read private rsa key file '%s': %s"), fname, ERR_error_string (ERR_get_error (), 0));
314 exit (1);
315 }
316
317 RSA_blinding_on (rsa_key, 0);
318
319 fclose (f);
320 }
321 else
322 {
323 slog (need_keys ? L_ERR : L_NOTICE, _("unable to open private rsa key file '%s': %s"), fname, strerror (errno));
324
325 if (need_keys)
326 exit (1);
327 }
328
329 free (fname);
330}
331
332char *configuration::config_filename (const char *name, const char *dflt)
333{
334 char *fname;
335
336 asprintf (&fname, name ? name : dflt, ::thisnode);
337
338 if (!ABSOLUTE_PATH (fname))
339 {
340 char *rname = fname;
341 asprintf (&fname, "%s/%s", confbase, rname);
342 free (rname);
343 }
344
345 return fname; 60 return 0;
346} 61}
347 62
348void 63const char *strprotocol (u8 protocol)
349configuration::print ()
350{ 64{
351 printf (_("\nConfiguration\n\n")); 65 if (protocol & PROT_IPv4 ) return "rawip";
352 printf (_("# of nodes: %d\n"), nodes.size ()); 66 if (protocol & PROT_ICMPv4) return "icmp";
353 printf (_("this node: %s\n"), thisnode ? thisnode->nodename : "<unset>"); 67 if (protocol & PROT_UDPv4 ) return "udp";
354 printf (_("MTU: %d\n"), mtu); 68 if (protocol & PROT_TCPv4 ) return "tcp";
355 printf (_("rekeying interval: %d\n"), rekey); 69 if (protocol & PROT_DNSv4 ) return "dns";
356 printf (_("keepalive interval: %d\n"), keepalive);
357 printf (_("interface: %s\n"), ifname);
358 printf (_("primary rsa key: %s\n"), prikeyfile ? prikeyfile : "<default>");
359 printf (_("rsa key size: %d\n"), rsa_key ? RSA_size (rsa_key) : -1);
360 printf ("\n");
361 70
362 printf ("%4s %-17s %s %-8.8s %-10.10s %s\n", 71 return "<unknown>";
363 _("ID#"), _("MAC"), _("Com"), _("Conmode"), _("Node"), _("Host:Port"));
364
365 for (node_vector::iterator i = nodes.begin (); i != nodes.end (); ++i)
366 (*i)->print ();
367
368 printf ("\n");
369} 72}
370 73
371void 74void
372conf_node::print () 75conf_node::print ()
373{ 76{
… …
379 connectmode == C_NEVER ? "never" : 82 connectmode == C_NEVER ? "never" :
380 connectmode == C_ALWAYS ? "always" : "", 83 connectmode == C_ALWAYS ? "always" : "",
381 nodename, 84 nodename,
382 hostname ? hostname : "", 85 hostname ? hostname : "",
383 hostname ? ":" : "", 86 hostname ? ":" : "",
384 hostname ? port : 0 87 hostname ? udp_port : 0
385 ); 88 );
386} 89}
387 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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