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Comparing gvpe/src/conf.C (file contents):
Revision 1.9 by pcg, Wed Apr 2 05:14:59 2003 UTC vs.
Revision 1.34 by pcg, Thu Mar 17 23:59:37 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
36#include <netinet/in.h> 34#include "netcompat.h"
37 35
38#include <openssl/err.h> 36#include <openssl/err.h>
39#include <openssl/pem.h> 37#include <openssl/pem.h>
40#include <openssl/rsa.h> 38#include <openssl/rsa.h>
41#include <openssl/rand.h> 39#include <openssl/rand.h>
40#include <openssl/bn.h>
42 41
43#include "gettext.h" 42#include "gettext.h"
44 43
45#include "conf.h" 44#include "conf.h"
46#include "slog.h" 45#include "slog.h"
47#include "util.h" 46#include "util.h"
48 47
49char *confbase; 48char *confbase;
50char *thisnode; 49char *thisnode;
51char *identname; 50char *identname;
52char *pidfilename;
53 51
54struct configuration conf; 52struct configuration conf;
55 53
56u8 best_protocol (u8 protset) 54u8 best_protocol (u8 protset)
57{ 55{
58 if (protset & PROT_IPv4 ) return PROT_IPv4; 56 if (protset & PROT_IPv4 ) return PROT_IPv4;
57 if (protset & PROT_ICMPv4) return PROT_ICMPv4;
59 if (protset & PROT_UDPv4) return PROT_UDPv4; 58 if (protset & PROT_UDPv4 ) return PROT_UDPv4;
60 if (protset & PROT_TCPv4) return PROT_TCPv4; 59 if (protset & PROT_TCPv4 ) return PROT_TCPv4;
60 if (protset & PROT_DNSv4 ) return PROT_DNSv4;
61 61
62 return 0; 62 return 0;
63} 63}
64 64
65const char *strprotocol (u8 protocol) 65const char *strprotocol (u8 protocol)
66{ 66{
67 if (protocol & PROT_IPv4 ) return "rawip"; 67 if (protocol & PROT_IPv4 ) return "rawip";
68 if (protocol & PROT_ICMPv4) return "icmp";
68 if (protocol & PROT_UDPv4) return "udp"; 69 if (protocol & PROT_UDPv4 ) return "udp";
70 if (protocol & PROT_TCPv4 ) return "tcp";
71 if (protocol & PROT_DNSv4 ) return "dns";
69 72
70 return "<unknown>"; 73 return "<unknown>";
71}
72
73configuration::configuration ()
74{
75 init ();
76}
77
78configuration::~configuration ()
79{
80 cleanup ();
81}
82
83void configuration::init ()
84{
85 memset (this, 0, sizeof (*this));
86
87 rekey = DEFAULT_REKEY;
88 keepalive = DEFAULT_KEEPALIVE;
89 llevel = L_INFO;
90 ip_proto = IPPROTO_GRE;
91
92 default_node.udp_port = DEFAULT_UDPPORT;
93 default_node.tcp_port = DEFAULT_UDPPORT;
94 default_node.connectmode = conf_node::C_ALWAYS;
95 default_node.compress = true;
96 default_node.protocols = PROT_UDPv4;
97}
98
99void configuration::cleanup()
100{
101 if (rsa_key)
102 RSA_free (rsa_key);
103
104 free (ifname);
105
106 rsa_key = 0;
107 ifname = 0;
108}
109
110void
111configuration::clear_config ()
112{
113 for (configuration::node_vector::iterator i = nodes.begin(); i != nodes.end(); ++i)
114 delete *i;
115
116 nodes.clear ();
117
118 cleanup ();
119 init ();
120}
121
122#define parse_bool(target,name,trueval,falseval) \
123 if (!strcmp (val, "yes")) target = trueval; \
124 else if (!strcmp (val, "no")) target = falseval; \
125 else if (!strcmp (val, "true")) target = trueval; \
126 else if (!strcmp (val, "false")) target = falseval; \
127 else if (!strcmp (val, "on")) target = trueval; \
128 else if (!strcmp (val, "off")) target = falseval; \
129 else \
130 slog (L_WARN, \
131 _("illegal value for '%s', only 'yes|true|on' or 'no|false|off' allowed, at '%s' line %d"), \
132 name, var, fname, lineno);
133
134void configuration::read_config (bool need_keys)
135{
136 char *fname;
137 FILE *f;
138
139 clear_config ();
140
141 asprintf (&fname, "%s/vped.conf", confbase);
142 f = fopen (fname, "r");
143
144 if (f)
145 {
146 char line[16384];
147 int lineno = 0;
148 char *var, *val;
149 conf_node *node = &default_node;
150
151 while (fgets (line, sizeof (line), f))
152 {
153 lineno++;
154
155 {
156 char *end = line + strlen (line);
157
158 while (*end < ' ' && end >= line)
159 end--;
160
161 *++end = 0;
162 }
163
164 char *tok = line;
165
166retry:
167 var = strtok (tok, "\t =");
168 tok = 0;
169
170 if (!var || !var[0])
171 continue; /* no tokens on this line */
172
173 if (var[0] == '#')
174 continue; /* comment: ignore */
175
176 val = strtok (NULL, "\t\n\r =");
177
178 if (!val || val[0] == '#')
179 {
180 slog (L_WARN,
181 _("no value for variable `%s', at '%s' line %d"),
182 var, fname, lineno);
183 break;
184 }
185
186 if (!strcmp (var, "on"))
187 {
188 if (!::thisnode
189 || (val[0] == '!' && strcmp (val + 1, ::thisnode))
190 || !strcmp (val, ::thisnode))
191 goto retry;
192
193 continue;
194 }
195
196 // truly global
197 if (!strcmp (var, "loglevel"))
198 {
199 loglevel l = string_to_loglevel (val);
200
201 if (l != L_NONE)
202 llevel = l;
203 else
204 slog (L_WARN, "'%s': %s, at '%s' line %d", val, UNKNOWN_LOGLEVEL, fname, line);
205 }
206 else if (!strcmp (var, "ip-proto"))
207 ip_proto = atoi (val);
208
209 // per config
210 else if (!strcmp (var, "node"))
211 {
212 default_node.id++;
213
214 node = new conf_node (default_node);
215
216 nodes.push_back (node);
217
218 node->nodename = strdup (val);
219
220 {
221 char *fname;
222 FILE *f;
223
224 asprintf (&fname, "%s/pubkey/%s", confbase, node->nodename);
225
226 f = fopen (fname, "r");
227 if (f)
228 {
229 node->rsa_key = RSA_new ();
230
231 if (!PEM_read_RSAPublicKey(f, &node->rsa_key, NULL, NULL))
232 {
233 ERR_load_RSA_strings (); ERR_load_PEM_strings ();
234 slog (L_ERR, _("unable to open public rsa key file '%s': %s"), fname, ERR_error_string (ERR_get_error (), 0));
235 exit (1);
236 }
237
238 RSA_blinding_on (node->rsa_key, 0);
239
240 fclose (f);
241 }
242 else
243 {
244 slog (need_keys ? L_ERR : L_NOTICE, _("unable to read public rsa key file '%s': %s"), fname, strerror (errno));
245
246 if (need_keys)
247 exit (1);
248 }
249
250 free (fname);
251 }
252
253 if (!::thisnode || !strcmp (node->nodename, ::thisnode))
254 thisnode = node;
255 }
256 else if (!strcmp (var, "private-key"))
257 prikeyfile = strdup (val);
258 else if (!strcmp (var, "ifpersist"))
259 {
260 parse_bool (ifpersist, "ifpersist", true, false);
261 }
262 else if (!strcmp (var, "ifname"))
263 ifname = strdup (val);
264 else if (!strcmp (var, "rekey"))
265 rekey = atoi (val);
266 else if (!strcmp (var, "keepalive"))
267 keepalive = atoi (val);
268 else if (!strcmp (var, "mtu"))
269 mtu = atoi (val);
270 else if (!strcmp (var, "if-up"))
271 script_if_up = strdup (val);
272 else if (!strcmp (var, "node-up"))
273 script_node_up = strdup (val);
274 else if (!strcmp (var, "node-down"))
275 script_node_down = strdup (val);
276
277 /* node-specific, non-defaultable */
278 else if (node != &default_node && !strcmp (var, "hostname"))
279 {
280 free (node->hostname);
281 node->hostname = strdup (val);
282 }
283
284 /* node-specific, defaultable */
285 else if (!strcmp (var, "udp-port"))
286 node->udp_port = atoi (val);
287 else if (!strcmp (var, "tcp-port"))
288 node->tcp_port = atoi (val);
289 else if (!strcmp (var, "router-priority"))
290 node->routerprio = atoi (val);
291 else if (!strcmp (var, "connect"))
292 {
293 if (!strcmp (val, "ondemand"))
294 node->connectmode = conf_node::C_ONDEMAND;
295 else if (!strcmp (val, "never"))
296 node->connectmode = conf_node::C_NEVER;
297 else if (!strcmp (val, "always"))
298 node->connectmode = conf_node::C_ALWAYS;
299 else if (!strcmp (val, "disabled"))
300 node->connectmode = conf_node::C_DISABLED;
301 else
302 slog (L_WARN,
303 _("illegal value for 'connectmode', use one of 'ondemand', 'never', 'always' or 'disabled', at '%s' line %d"),
304 var, fname, lineno);
305 }
306 else if (!strcmp (var, "inherit-tos"))
307 {
308 parse_bool (node->inherit_tos, "inherit-tos", true, false);
309 }
310 else if (!strcmp (var, "compress"))
311 {
312 parse_bool (node->compress, "compress", true, false);
313 }
314 // all these bool options really really cost a lot of executable size!
315 else if (!strcmp (var, "enable-tcp"))
316 {
317 u8 v; parse_bool (v, "enable-tcp" , PROT_TCPv4, 0); node->protocols = (node->protocols & ~PROT_TCPv4) | v;
318 }
319 else if (!strcmp (var, "enable-udp"))
320 {
321 u8 v; parse_bool (v, "enable-udp" , PROT_UDPv4, 0); node->protocols = (node->protocols & ~PROT_UDPv4) | v;
322 }
323 else if (!strcmp (var, "enable-rawip"))
324 {
325 u8 v; parse_bool (v, "enable-rawip", PROT_IPv4, 0); node->protocols = (node->protocols & ~PROT_IPv4 ) | v;
326 }
327
328 // unknown or misplaced
329 else
330 {
331 slog (L_WARN,
332 _("unknown or misplaced variable `%s', at '%s' line %d"),
333 var, fname, lineno);
334 }
335 }
336
337 fclose (f);
338 }
339 else
340 {
341 slog (L_ERR, _("unable to read config file '%s': %s"), fname, strerror (errno));
342 exit (1);
343 }
344
345 free (fname);
346
347 fname = config_filename (prikeyfile, "hostkey");
348
349 f = fopen (fname, "r");
350 if (f)
351 {
352 rsa_key = RSA_new ();
353
354 if (!PEM_read_RSAPrivateKey (f, &rsa_key, NULL, NULL))
355 {
356 ERR_load_RSA_strings (); ERR_load_PEM_strings ();
357 slog (L_ERR, _("unable to read private rsa key file '%s': %s"), fname, ERR_error_string (ERR_get_error (), 0));
358 exit (1);
359 }
360
361 RSA_blinding_on (rsa_key, 0);
362
363 fclose (f);
364 }
365 else
366 {
367 slog (need_keys ? L_ERR : L_NOTICE, _("unable to open private rsa key file '%s': %s"), fname, strerror (errno));
368
369 if (need_keys)
370 exit (1);
371 }
372
373 free (fname);
374}
375
376char *configuration::config_filename (const char *name, const char *dflt)
377{
378 char *fname;
379
380 asprintf (&fname, name ? name : dflt, ::thisnode);
381
382 if (!ABSOLUTE_PATH (fname))
383 {
384 char *rname = fname;
385 asprintf (&fname, "%s/%s", confbase, rname);
386 free (rname);
387 }
388
389 return fname;
390}
391
392void
393configuration::print ()
394{
395 printf (_("\nConfiguration\n\n"));
396 printf (_("# of nodes: %d\n"), nodes.size ());
397 printf (_("this node: %s\n"), thisnode ? thisnode->nodename : "<unset>");
398 printf (_("MTU: %d\n"), mtu);
399 printf (_("rekeying interval: %d\n"), rekey);
400 printf (_("keepalive interval: %d\n"), keepalive);
401 printf (_("interface: %s\n"), ifname);
402 printf (_("primary rsa key: %s\n"), prikeyfile ? prikeyfile : "<default>");
403 printf (_("rsa key size: %d\n"), rsa_key ? RSA_size (rsa_key) : -1);
404 printf ("\n");
405
406 printf ("%4s %-17s %s %-8.8s %-10.10s %s\n",
407 _("ID#"), _("MAC"), _("Com"), _("Conmode"), _("Node"), _("Host:Port"));
408
409 for (node_vector::iterator i = nodes.begin (); i != nodes.end (); ++i)
410 (*i)->print ();
411
412 printf ("\n");
413} 74}
414 75
415void 76void
416conf_node::print () 77conf_node::print ()
417{ 78{
… …
427 hostname ? ":" : "", 88 hostname ? ":" : "",
428 hostname ? udp_port : 0 89 hostname ? udp_port : 0
429 ); 90 );
430} 91}
431 92
93conf_node::~conf_node ()
94{
95 if (rsa_key)
96 RSA_free (rsa_key);
97
98 free (nodename);
99 free (hostname);
100#if ENABLE_DNS
101 free (domain);
102 free (dns_hostname);
103#endif
104}
105
106void configuration::init ()
107{
108 memset (this, 0, sizeof (*this));
109
110 mtu = DEFAULT_MTU;
111 rekey = DEFAULT_REKEY;
112 keepalive = DEFAULT_KEEPALIVE;
113 llevel = L_INFO;
114 ip_proto = IPPROTO_GRE;
115#if ENABLE_ICMP
116 icmp_type = ICMP_ECHOREPLY;
117#endif
118
119 default_node.udp_port = DEFAULT_UDPPORT;
120 default_node.tcp_port = DEFAULT_UDPPORT; // ehrm
121 default_node.connectmode = conf_node::C_ALWAYS;
122 default_node.compress = true;
123 default_node.protocols = 0;
124 default_node.max_retry = DEFAULT_MAX_RETRY;
125
126#if ENABLE_DNS
127 default_node.dns_port = 0; // default is 0 == client
128 dns_forw_host = strdup ("127.0.0.1");
129 dns_forw_port = 53;
130#endif
131
132 conf.pidfilename = strdup (LOCALSTATEDIR "/run/gvpe.pid");
133}
134
135void configuration::cleanup()
136{
137 if (rsa_key)
138 RSA_free (rsa_key);
139
140 rsa_key = 0;
141
142 free (pidfilename); pidfilename = 0;
143 free (ifname); ifname = 0;
144#if ENABLE_HTTP_PROXY
145 free (proxy_host); proxy_host = 0;
146 free (proxy_auth); proxy_auth = 0;
147#endif
148#if ENABLE_DNS
149 free (dns_forw_host); dns_forw_host = 0;
150#endif
151}
152
153void
154configuration::clear_config ()
155{
156 for (configuration::node_vector::iterator i = nodes.begin(); i != nodes.end(); ++i)
157 delete *i;
158
159 nodes.clear ();
160
161 cleanup ();
162 init ();
163}
164
165#define parse_bool(target,name,trueval,falseval) \
166 if (!strcmp (val, "yes")) target = trueval; \
167 else if (!strcmp (val, "no")) target = falseval; \
168 else if (!strcmp (val, "true")) target = trueval; \
169 else if (!strcmp (val, "false")) target = falseval; \
170 else if (!strcmp (val, "on")) target = trueval; \
171 else if (!strcmp (val, "off")) target = falseval; \
172 else \
173 slog (L_WARN, \
174 _("illegal value for '%s', only 'yes|true|on' or 'no|false|off' allowed, at '%s' line %d"), \
175 name, var, fname, lineno);
176
177void configuration::read_config (bool need_keys)
178{
179 char *fname;
180 FILE *f;
181
182 clear_config ();
183
184 asprintf (&fname, "%s/gvpe.conf", confbase);
185 f = fopen (fname, "r");
186
187 if (f)
188 {
189 char line[16384];
190 int lineno = 0;
191 char *var, *val;
192 conf_node *node = &default_node;
193
194 while (fgets (line, sizeof (line), f))
195 {
196 lineno++;
197
198 {
199 char *end = line + strlen (line);
200
201 while (*end < ' ' && end >= line)
202 end--;
203
204 *++end = 0;
205 }
206
207 char *tok = line;
208
209retry:
210 var = strtok (tok, "\t =");
211 tok = 0;
212
213 if (!var || !var[0])
214 continue; /* no tokens on this line */
215
216 if (var[0] == '#')
217 continue; /* comment: ignore */
218
219 val = strtok (NULL, "\t\n\r =");
220
221 if (!val || val[0] == '#')
222 {
223 slog (L_WARN,
224 _("no value for variable `%s', at '%s' line %d"),
225 var, fname, lineno);
226 break;
227 }
228
229 if (!strcmp (var, "on"))
230 {
231 if (!::thisnode
232 || (val[0] == '!' && strcmp (val + 1, ::thisnode))
233 || !strcmp (val, ::thisnode))
234 goto retry;
235
236 continue;
237 }
238
239 // truly global
240 if (!strcmp (var, "loglevel"))
241 {
242 loglevel l = string_to_loglevel (val);
243
244 if (l != L_NONE)
245 llevel = l;
246 else
247 slog (L_WARN, "'%s': %s, at '%s' line %d", val, UNKNOWN_LOGLEVEL, fname, line);
248 }
249 else if (!strcmp (var, "ip-proto"))
250 ip_proto = atoi (val);
251 else if (!strcmp (var, "icmp-type"))
252 {
253#if ENABLE_ICMP
254 icmp_type = atoi (val);
255#endif
256 }
257
258 // per config
259 else if (!strcmp (var, "node"))
260 {
261 default_node.id++;
262
263 node = new conf_node (default_node);
264
265 nodes.push_back (node);
266
267 node->nodename = strdup (val);
268
269 {
270 char *fname;
271 FILE *f;
272
273 asprintf (&fname, "%s/pubkey/%s", confbase, node->nodename);
274
275 f = fopen (fname, "r");
276 if (f)
277 {
278 node->rsa_key = RSA_new ();
279
280 if (!PEM_read_RSAPublicKey(f, &node->rsa_key, NULL, NULL))
281 {
282 ERR_load_RSA_strings (); ERR_load_PEM_strings ();
283 slog (L_ERR, _("unable to open public rsa key file '%s': %s"), fname, ERR_error_string (ERR_get_error (), 0));
284 exit (EXIT_FAILURE);
285 }
286
287 require (RSA_blinding_on (node->rsa_key, 0));
288
289 fclose (f);
290 }
291 else
292 {
293 slog (need_keys ? L_ERR : L_NOTICE, _("unable to read public rsa key file '%s': %s"), fname, strerror (errno));
294
295 if (need_keys)
296 exit (EXIT_FAILURE);
297 }
298
299 free (fname);
300 }
301
302 if (::thisnode && !strcmp (node->nodename, ::thisnode))
303 thisnode = node;
304 }
305 else if (!strcmp (var, "private-key"))
306 free (prikeyfile), prikeyfile = strdup (val);
307 else if (!strcmp (var, "ifpersist"))
308 {
309 parse_bool (ifpersist, "ifpersist", true, false);
310 }
311 else if (!strcmp (var, "ifname"))
312 free (ifname), ifname = strdup (val);
313 else if (!strcmp (var, "rekey"))
314 rekey = atoi (val);
315 else if (!strcmp (var, "keepalive"))
316 keepalive = atoi (val);
317 else if (!strcmp (var, "mtu"))
318 mtu = atoi (val);
319 else if (!strcmp (var, "if-up"))
320 free (script_if_up), script_if_up = strdup (val);
321 else if (!strcmp (var, "node-up"))
322 free (script_node_up), script_node_up = strdup (val);
323 else if (!strcmp (var, "node-down"))
324 free (script_node_down), script_node_down = strdup (val);
325 else if (!strcmp (var, "pid-file"))
326 free (pidfilename), pidfilename = strdup (val);
327 else if (!strcmp (var, "dns-forw-host"))
328 {
329#if ENABLE_DNS
330 free (dns_forw_host), dns_forw_host = strdup (val);
331#endif
332 }
333 else if (!strcmp (var, "dns-forw-port"))
334 {
335#if ENABLE_DNS
336 dns_forw_port = atoi (val);
337#endif
338 }
339 else if (!strcmp (var, "http-proxy-host"))
340 {
341#if ENABLE_HTTP_PROXY
342 free (proxy_host), proxy_host = strdup (val);
343#endif
344 }
345 else if (!strcmp (var, "http-proxy-port"))
346 {
347#if ENABLE_HTTP_PROXY
348 proxy_port = atoi (val);
349#endif
350 }
351 else if (!strcmp (var, "http-proxy-auth"))
352 {
353#if ENABLE_HTTP_PROXY
354 proxy_auth = (char *)base64_encode ((const u8 *)val, strlen (val));
355#endif
356 }
357
358 /* node-specific, non-defaultable */
359 else if (node != &default_node && !strcmp (var, "hostname"))
360 free (node->hostname), node->hostname = strdup (val);
361
362 /* node-specific, defaultable */
363 else if (!strcmp (var, "udp-port"))
364 node->udp_port = atoi (val);
365 else if (!strcmp (var, "tcp-port"))
366 node->tcp_port = atoi (val);
367 else if (!strcmp (var, "dns-hostname"))
368 {
369#if ENABLE_DNS
370 free (node->dns_hostname), node->dns_hostname = strdup (val);
371#endif
372 }
373 else if (!strcmp (var, "dns-port"))
374 {
375#if ENABLE_DNS
376 node->dns_port = atoi (val);
377#endif
378 }
379 else if (!strcmp (var, "dns-domain"))
380 {
381#if ENABLE_DNS
382 free (node->domain), node->domain = strdup (val);
383#endif
384 }
385 else if (!strcmp (var, "router-priority"))
386 node->routerprio = atoi (val);
387 else if (!strcmp (var, "max-retry"))
388 node->max_retry = atoi (val);
389 else if (!strcmp (var, "connect"))
390 {
391 if (!strcmp (val, "ondemand"))
392 node->connectmode = conf_node::C_ONDEMAND;
393 else if (!strcmp (val, "never"))
394 node->connectmode = conf_node::C_NEVER;
395 else if (!strcmp (val, "always"))
396 node->connectmode = conf_node::C_ALWAYS;
397 else if (!strcmp (val, "disabled"))
398 node->connectmode = conf_node::C_DISABLED;
399 else
400 slog (L_WARN,
401 _("illegal value for 'connectmode', use one of 'ondemand', 'never', 'always' or 'disabled', at '%s' line %d"),
402 var, fname, lineno);
403 }
404 else if (!strcmp (var, "inherit-tos"))
405 {
406 parse_bool (node->inherit_tos, "inherit-tos", true, false);
407 }
408 else if (!strcmp (var, "compress"))
409 {
410 parse_bool (node->compress, "compress", true, false);
411 }
412 // all these bool options really really cost a lot of executable size!
413 else if (!strcmp (var, "enable-tcp"))
414 {
415#if ENABLE_TCP
416 u8 v; parse_bool (v, "enable-tcp" , PROT_TCPv4, 0); node->protocols = (node->protocols & ~PROT_TCPv4) | v;
417#endif
418 }
419 else if (!strcmp (var, "enable-icmp"))
420 {
421#if ENABLE_ICMP
422 u8 v; parse_bool (v, "enable-icmp" , PROT_ICMPv4, 0); node->protocols = (node->protocols & ~PROT_ICMPv4) | v;
423#endif
424 }
425 else if (!strcmp (var, "enable-dns"))
426 {
427#if ENABLE_DNS
428 u8 v; parse_bool (v, "enable-dns" , PROT_DNSv4, 0); node->protocols = (node->protocols & ~PROT_DNSv4) | v;
429#endif
430 }
431 else if (!strcmp (var, "enable-udp"))
432 {
433 u8 v; parse_bool (v, "enable-udp" , PROT_UDPv4, 0); node->protocols = (node->protocols & ~PROT_UDPv4) | v;
434 }
435 else if (!strcmp (var, "enable-rawip"))
436 {
437 u8 v; parse_bool (v, "enable-rawip", PROT_IPv4, 0); node->protocols = (node->protocols & ~PROT_IPv4 ) | v;
438 }
439
440 // unknown or misplaced
441 else
442 slog (L_WARN,
443 _("unknown or misplaced variable `%s', at '%s' line %d"),
444 var, fname, lineno);
445 }
446
447 fclose (f);
448 }
449 else
450 {
451 slog (L_ERR, _("unable to read config file '%s': %s"), fname, strerror (errno));
452 exit (EXIT_FAILURE);
453 }
454
455 free (fname);
456
457 fname = config_filename (prikeyfile, "hostkey");
458
459 f = fopen (fname, "r");
460 if (f)
461 {
462 rsa_key = RSA_new ();
463
464 if (!PEM_read_RSAPrivateKey (f, &rsa_key, NULL, NULL))
465 {
466 ERR_load_RSA_strings (); ERR_load_PEM_strings ();
467 slog (L_ERR, _("unable to read private rsa key file '%s': %s"), fname, ERR_error_string (ERR_get_error (), 0));
468 exit (EXIT_FAILURE);
469 }
470
471 require (RSA_blinding_on (rsa_key, 0));
472
473 fclose (f);
474 }
475 else
476 {
477 slog (need_keys ? L_ERR : L_NOTICE, _("unable to open private rsa key file '%s': %s"), fname, strerror (errno));
478
479 if (need_keys)
480 exit (EXIT_FAILURE);
481 }
482
483 if (need_keys && ::thisnode
484 && rsa_key && thisnode && thisnode->rsa_key)
485 if (BN_cmp (rsa_key->n, thisnode->rsa_key->n) != 0
486 || BN_cmp (rsa_key->e, thisnode->rsa_key->e) != 0)
487 {
488 slog (L_NOTICE, _("private hostkey and public node key mismatch: is '%s' the correct node?"), ::thisnode);
489 exit (EXIT_FAILURE);
490 }
491
492 free (fname);
493}
494
495char *configuration::config_filename (const char *name, const char *dflt)
496{
497 char *fname;
498
499 asprintf (&fname, name ? name : dflt, ::thisnode);
500
501 if (!ABSOLUTE_PATH (fname))
502 {
503 char *rname = fname;
504 asprintf (&fname, "%s/%s", confbase, rname);
505 free (rname);
506 }
507
508 return fname;
509}
510
511void
512configuration::print ()
513{
514 printf (_("\nConfiguration\n\n"));
515 printf (_("# of nodes: %d\n"), nodes.size ());
516 printf (_("this node: %s\n"), thisnode ? thisnode->nodename : "<unset>");
517 printf (_("MTU: %d\n"), mtu);
518 printf (_("rekeying interval: %d\n"), rekey);
519 printf (_("keepalive interval: %d\n"), keepalive);
520 printf (_("interface: %s\n"), ifname);
521 printf (_("primary rsa key: %s\n"), prikeyfile ? prikeyfile : "<default>");
522 printf (_("rsa key size: %d\n"), rsa_key ? RSA_size (rsa_key) * 8 : -1);
523 printf ("\n");
524
525 printf ("%4s %-17s %s %-8.8s %-10.10s %s\n",
526 _("ID#"), _("MAC"), _("Com"), _("Conmode"), _("Node"), _("Host:Port"));
527
528 for (node_vector::iterator i = nodes.begin (); i != nodes.end (); ++i)
529 (*i)->print ();
530
531 printf ("\n");
532}
533
534configuration::configuration ()
535{
536 asprintf (&confbase, "%s/gvpe", CONFDIR);
537
538 init ();
539}
540
541configuration::~configuration ()
542{
543 cleanup ();
544}
545
546

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