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Comparing gvpe/src/conf.C (file contents):
Revision 1.11 by pcg, Wed Apr 2 21:43:44 2003 UTC vs.
Revision 1.36 by pcg, Sun Mar 20 02:34:16 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>
42 40#include <openssl/bn.h>
43#include "gettext.h"
44 41
45#include "conf.h" 42#include "conf.h"
46#include "slog.h" 43#include "slog.h"
47#include "util.h" 44#include "util.h"
48 45
49char *confbase; 46char *confbase;
50char *thisnode; 47char *thisnode;
51char *identname; 48char *identname;
52char *pidfilename;
53 49
54struct configuration conf; 50struct configuration conf;
55 51
56u8 best_protocol (u8 protset) 52u8 best_protocol (u8 protset)
57{ 53{
58 if (protset & PROT_IPv4 ) return PROT_IPv4; 54 if (protset & PROT_IPv4 ) return PROT_IPv4;
55 if (protset & PROT_ICMPv4) return PROT_ICMPv4;
59 if (protset & PROT_UDPv4) return PROT_UDPv4; 56 if (protset & PROT_UDPv4 ) return PROT_UDPv4;
60 if (protset & PROT_TCPv4) return PROT_TCPv4; 57 if (protset & PROT_TCPv4 ) return PROT_TCPv4;
58 if (protset & PROT_DNSv4 ) return PROT_DNSv4;
61 59
62 return 0; 60 return 0;
63} 61}
64 62
65const char *strprotocol (u8 protocol) 63const char *strprotocol (u8 protocol)
66{ 64{
67 if (protocol & PROT_IPv4 ) return "rawip"; 65 if (protocol & PROT_IPv4 ) return "rawip";
66 if (protocol & PROT_ICMPv4) return "icmp";
68 if (protocol & PROT_UDPv4) return "udp"; 67 if (protocol & PROT_UDPv4 ) return "udp";
69 if (protocol & PROT_TCPv4) return "tcp"; 68 if (protocol & PROT_TCPv4 ) return "tcp";
69 if (protocol & PROT_DNSv4 ) return "dns";
70 70
71 return "<unknown>"; 71 return "<unknown>";
72}
73
74configuration::configuration ()
75{
76 init ();
77}
78
79configuration::~configuration ()
80{
81 cleanup ();
82}
83
84void configuration::init ()
85{
86 memset (this, 0, sizeof (*this));
87
88 rekey = DEFAULT_REKEY;
89 keepalive = DEFAULT_KEEPALIVE;
90 llevel = L_INFO;
91 ip_proto = IPPROTO_GRE;
92
93 default_node.udp_port = DEFAULT_UDPPORT;
94 default_node.tcp_port = DEFAULT_UDPPORT;
95 default_node.connectmode = conf_node::C_ALWAYS;
96 default_node.compress = true;
97 default_node.protocols = PROT_UDPv4;
98}
99
100void configuration::cleanup()
101{
102 if (rsa_key)
103 RSA_free (rsa_key);
104
105 free (ifname);
106
107 rsa_key = 0;
108 ifname = 0;
109}
110
111void
112configuration::clear_config ()
113{
114 for (configuration::node_vector::iterator i = nodes.begin(); i != nodes.end(); ++i)
115 delete *i;
116
117 nodes.clear ();
118
119 cleanup ();
120 init ();
121}
122
123#define parse_bool(target,name,trueval,falseval) \
124 if (!strcmp (val, "yes")) target = trueval; \
125 else if (!strcmp (val, "no")) target = falseval; \
126 else if (!strcmp (val, "true")) target = trueval; \
127 else if (!strcmp (val, "false")) target = falseval; \
128 else if (!strcmp (val, "on")) target = trueval; \
129 else if (!strcmp (val, "off")) target = falseval; \
130 else \
131 slog (L_WARN, \
132 _("illegal value for '%s', only 'yes|true|on' or 'no|false|off' allowed, at '%s' line %d"), \
133 name, var, fname, lineno);
134
135void configuration::read_config (bool need_keys)
136{
137 char *fname;
138 FILE *f;
139
140 clear_config ();
141
142 asprintf (&fname, "%s/vped.conf", confbase);
143 f = fopen (fname, "r");
144
145 if (f)
146 {
147 char line[16384];
148 int lineno = 0;
149 char *var, *val;
150 conf_node *node = &default_node;
151
152 while (fgets (line, sizeof (line), f))
153 {
154 lineno++;
155
156 {
157 char *end = line + strlen (line);
158
159 while (*end < ' ' && end >= line)
160 end--;
161
162 *++end = 0;
163 }
164
165 char *tok = line;
166
167retry:
168 var = strtok (tok, "\t =");
169 tok = 0;
170
171 if (!var || !var[0])
172 continue; /* no tokens on this line */
173
174 if (var[0] == '#')
175 continue; /* comment: ignore */
176
177 val = strtok (NULL, "\t\n\r =");
178
179 if (!val || val[0] == '#')
180 {
181 slog (L_WARN,
182 _("no value for variable `%s', at '%s' line %d"),
183 var, fname, lineno);
184 break;
185 }
186
187 if (!strcmp (var, "on"))
188 {
189 if (!::thisnode
190 || (val[0] == '!' && strcmp (val + 1, ::thisnode))
191 || !strcmp (val, ::thisnode))
192 goto retry;
193
194 continue;
195 }
196
197 // truly global
198 if (!strcmp (var, "loglevel"))
199 {
200 loglevel l = string_to_loglevel (val);
201
202 if (l != L_NONE)
203 llevel = l;
204 else
205 slog (L_WARN, "'%s': %s, at '%s' line %d", val, UNKNOWN_LOGLEVEL, fname, line);
206 }
207 else if (!strcmp (var, "ip-proto"))
208 ip_proto = atoi (val);
209
210 // per config
211 else if (!strcmp (var, "node"))
212 {
213 default_node.id++;
214
215 node = new conf_node (default_node);
216
217 nodes.push_back (node);
218
219 node->nodename = strdup (val);
220
221 {
222 char *fname;
223 FILE *f;
224
225 asprintf (&fname, "%s/pubkey/%s", confbase, node->nodename);
226
227 f = fopen (fname, "r");
228 if (f)
229 {
230 node->rsa_key = RSA_new ();
231
232 if (!PEM_read_RSAPublicKey(f, &node->rsa_key, NULL, NULL))
233 {
234 ERR_load_RSA_strings (); ERR_load_PEM_strings ();
235 slog (L_ERR, _("unable to open public rsa key file '%s': %s"), fname, ERR_error_string (ERR_get_error (), 0));
236 exit (1);
237 }
238
239 RSA_blinding_on (node->rsa_key, 0);
240
241 fclose (f);
242 }
243 else
244 {
245 slog (need_keys ? L_ERR : L_NOTICE, _("unable to read public rsa key file '%s': %s"), fname, strerror (errno));
246
247 if (need_keys)
248 exit (1);
249 }
250
251 free (fname);
252 }
253
254 if (!::thisnode || !strcmp (node->nodename, ::thisnode))
255 thisnode = node;
256 }
257 else if (!strcmp (var, "private-key"))
258 prikeyfile = strdup (val);
259 else if (!strcmp (var, "ifpersist"))
260 {
261 parse_bool (ifpersist, "ifpersist", true, false);
262 }
263 else if (!strcmp (var, "ifname"))
264 ifname = strdup (val);
265 else if (!strcmp (var, "rekey"))
266 rekey = atoi (val);
267 else if (!strcmp (var, "keepalive"))
268 keepalive = atoi (val);
269 else if (!strcmp (var, "mtu"))
270 mtu = atoi (val);
271 else if (!strcmp (var, "if-up"))
272 script_if_up = strdup (val);
273 else if (!strcmp (var, "node-up"))
274 script_node_up = strdup (val);
275 else if (!strcmp (var, "node-down"))
276 script_node_down = strdup (val);
277
278 /* node-specific, non-defaultable */
279 else if (node != &default_node && !strcmp (var, "hostname"))
280 {
281 free (node->hostname);
282 node->hostname = strdup (val);
283 }
284
285 /* node-specific, defaultable */
286 else if (!strcmp (var, "udp-port"))
287 node->udp_port = atoi (val);
288 else if (!strcmp (var, "tcp-port"))
289 node->tcp_port = atoi (val);
290 else if (!strcmp (var, "router-priority"))
291 node->routerprio = atoi (val);
292 else if (!strcmp (var, "connect"))
293 {
294 if (!strcmp (val, "ondemand"))
295 node->connectmode = conf_node::C_ONDEMAND;
296 else if (!strcmp (val, "never"))
297 node->connectmode = conf_node::C_NEVER;
298 else if (!strcmp (val, "always"))
299 node->connectmode = conf_node::C_ALWAYS;
300 else if (!strcmp (val, "disabled"))
301 node->connectmode = conf_node::C_DISABLED;
302 else
303 slog (L_WARN,
304 _("illegal value for 'connectmode', use one of 'ondemand', 'never', 'always' or 'disabled', at '%s' line %d"),
305 var, fname, lineno);
306 }
307 else if (!strcmp (var, "inherit-tos"))
308 {
309 parse_bool (node->inherit_tos, "inherit-tos", true, false);
310 }
311 else if (!strcmp (var, "compress"))
312 {
313 parse_bool (node->compress, "compress", true, false);
314 }
315 // all these bool options really really cost a lot of executable size!
316 else if (!strcmp (var, "enable-tcp"))
317 {
318#if ENABLE_TCP
319 u8 v; parse_bool (v, "enable-tcp" , PROT_TCPv4, 0); node->protocols = (node->protocols & ~PROT_TCPv4) | v;
320#endif
321 }
322 else if (!strcmp (var, "enable-udp"))
323 {
324 u8 v; parse_bool (v, "enable-udp" , PROT_UDPv4, 0); node->protocols = (node->protocols & ~PROT_UDPv4) | v;
325 }
326 else if (!strcmp (var, "enable-rawip"))
327 {
328 u8 v; parse_bool (v, "enable-rawip", PROT_IPv4, 0); node->protocols = (node->protocols & ~PROT_IPv4 ) | v;
329 }
330
331 // unknown or misplaced
332 else
333 {
334 slog (L_WARN,
335 _("unknown or misplaced variable `%s', at '%s' line %d"),
336 var, fname, lineno);
337 }
338 }
339
340 fclose (f);
341 }
342 else
343 {
344 slog (L_ERR, _("unable to read config file '%s': %s"), fname, strerror (errno));
345 exit (1);
346 }
347
348 free (fname);
349
350 fname = config_filename (prikeyfile, "hostkey");
351
352 f = fopen (fname, "r");
353 if (f)
354 {
355 rsa_key = RSA_new ();
356
357 if (!PEM_read_RSAPrivateKey (f, &rsa_key, NULL, NULL))
358 {
359 ERR_load_RSA_strings (); ERR_load_PEM_strings ();
360 slog (L_ERR, _("unable to read private rsa key file '%s': %s"), fname, ERR_error_string (ERR_get_error (), 0));
361 exit (1);
362 }
363
364 RSA_blinding_on (rsa_key, 0);
365
366 fclose (f);
367 }
368 else
369 {
370 slog (need_keys ? L_ERR : L_NOTICE, _("unable to open private rsa key file '%s': %s"), fname, strerror (errno));
371
372 if (need_keys)
373 exit (1);
374 }
375
376 free (fname);
377}
378
379char *configuration::config_filename (const char *name, const char *dflt)
380{
381 char *fname;
382
383 asprintf (&fname, name ? name : dflt, ::thisnode);
384
385 if (!ABSOLUTE_PATH (fname))
386 {
387 char *rname = fname;
388 asprintf (&fname, "%s/%s", confbase, rname);
389 free (rname);
390 }
391
392 return fname;
393}
394
395void
396configuration::print ()
397{
398 printf (_("\nConfiguration\n\n"));
399 printf (_("# of nodes: %d\n"), nodes.size ());
400 printf (_("this node: %s\n"), thisnode ? thisnode->nodename : "<unset>");
401 printf (_("MTU: %d\n"), mtu);
402 printf (_("rekeying interval: %d\n"), rekey);
403 printf (_("keepalive interval: %d\n"), keepalive);
404 printf (_("interface: %s\n"), ifname);
405 printf (_("primary rsa key: %s\n"), prikeyfile ? prikeyfile : "<default>");
406 printf (_("rsa key size: %d\n"), rsa_key ? RSA_size (rsa_key) : -1);
407 printf ("\n");
408
409 printf ("%4s %-17s %s %-8.8s %-10.10s %s\n",
410 _("ID#"), _("MAC"), _("Com"), _("Conmode"), _("Node"), _("Host:Port"));
411
412 for (node_vector::iterator i = nodes.begin (); i != nodes.end (); ++i)
413 (*i)->print ();
414
415 printf ("\n");
416} 72}
417 73
418void 74void
419conf_node::print () 75conf_node::print ()
420{ 76{
… …
430 hostname ? ":" : "", 86 hostname ? ":" : "",
431 hostname ? udp_port : 0 87 hostname ? udp_port : 0
432 ); 88 );
433} 89}
434 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 dns_forw_host = strdup ("127.0.0.1");
127 dns_forw_port = 53;
128#endif
129
130 conf.pidfilename = strdup (LOCALSTATEDIR "/run/gvpe.pid");
131}
132
133void configuration::cleanup()
134{
135 if (rsa_key)
136 RSA_free (rsa_key);
137
138 rsa_key = 0;
139
140 free (pidfilename); pidfilename = 0;
141 free (ifname); ifname = 0;
142#if ENABLE_HTTP_PROXY
143 free (proxy_host); proxy_host = 0;
144 free (proxy_auth); proxy_auth = 0;
145#endif
146#if ENABLE_DNS
147 free (dns_forw_host); dns_forw_host = 0;
148#endif
149}
150
151void
152configuration::clear_config ()
153{
154 for (configuration::node_vector::iterator i = nodes.begin(); i != nodes.end(); ++i)
155 delete *i;
156
157 nodes.clear ();
158
159 cleanup ();
160 init ();
161}
162
163#define parse_bool(target,name,trueval,falseval) \
164 if (!strcmp (val, "yes")) target = trueval; \
165 else if (!strcmp (val, "no")) target = falseval; \
166 else if (!strcmp (val, "true")) target = trueval; \
167 else if (!strcmp (val, "false")) target = falseval; \
168 else if (!strcmp (val, "on")) target = trueval; \
169 else if (!strcmp (val, "off")) target = falseval; \
170 else \
171 slog (L_WARN, \
172 _("illegal value for '%s', only 'yes|true|on' or 'no|false|off' allowed, at '%s' line %d"), \
173 name, var, fname, lineno);
174
175void configuration::read_config (bool need_keys)
176{
177 char *fname;
178 FILE *f;
179
180 clear_config ();
181
182 asprintf (&fname, "%s/gvpe.conf", confbase);
183 f = fopen (fname, "r");
184
185 if (f)
186 {
187 char line[16384];
188 int lineno = 0;
189 char *var, *val;
190 conf_node *node = &default_node;
191
192 while (fgets (line, sizeof (line), f))
193 {
194 lineno++;
195
196 {
197 char *end = line + strlen (line);
198
199 while (*end < ' ' && end >= line)
200 end--;
201
202 *++end = 0;
203 }
204
205 char *tok = line;
206
207retry:
208 var = strtok (tok, "\t =");
209 tok = 0;
210
211 if (!var || !var[0])
212 continue; /* no tokens on this line */
213
214 if (var[0] == '#')
215 continue; /* comment: ignore */
216
217 val = strtok (NULL, "\t\n\r =");
218
219 if (!val || val[0] == '#')
220 {
221 slog (L_WARN,
222 _("no value for variable `%s', at '%s' line %d, skipping."),
223 var, fname, lineno);
224 continue;
225 }
226
227 if (!strcmp (var, "on"))
228 {
229 if (!::thisnode
230 || (val[0] == '!' && strcmp (val + 1, ::thisnode))
231 || !strcmp (val, ::thisnode))
232 goto retry;
233
234 continue;
235 }
236
237 // truly global
238 if (!strcmp (var, "loglevel"))
239 {
240 loglevel l = string_to_loglevel (val);
241
242 if (l != L_NONE)
243 llevel = l;
244 else
245 slog (L_WARN, "'%s': %s, at '%s' line %d", val, UNKNOWN_LOGLEVEL, fname, line);
246 }
247 else if (!strcmp (var, "ip-proto"))
248 ip_proto = atoi (val);
249 else if (!strcmp (var, "icmp-type"))
250 {
251#if ENABLE_ICMP
252 icmp_type = atoi (val);
253#endif
254 }
255
256 // per config
257 else if (!strcmp (var, "node"))
258 {
259 default_node.id++;
260
261 node = new conf_node (default_node);
262
263 nodes.push_back (node);
264
265 node->nodename = strdup (val);
266
267 {
268 char *fname;
269 FILE *f;
270
271 asprintf (&fname, "%s/pubkey/%s", confbase, node->nodename);
272
273 f = fopen (fname, "r");
274 if (f)
275 {
276 node->rsa_key = RSA_new ();
277
278 if (!PEM_read_RSAPublicKey(f, &node->rsa_key, NULL, NULL))
279 {
280 ERR_load_RSA_strings (); ERR_load_PEM_strings ();
281 slog (L_ERR, _("unable to open public rsa key file '%s': %s"), fname, ERR_error_string (ERR_get_error (), 0));
282 exit (EXIT_FAILURE);
283 }
284
285 require (RSA_blinding_on (node->rsa_key, 0));
286
287 fclose (f);
288 }
289 else
290 {
291 slog (need_keys ? L_ERR : L_NOTICE, _("unable to read public rsa key file '%s': %s"), fname, strerror (errno));
292
293 if (need_keys)
294 exit (EXIT_FAILURE);
295 }
296
297 free (fname);
298 }
299
300 if (::thisnode && !strcmp (node->nodename, ::thisnode))
301 thisnode = node;
302 }
303 else if (!strcmp (var, "private-key"))
304 free (prikeyfile), prikeyfile = strdup (val);
305 else if (!strcmp (var, "ifpersist"))
306 parse_bool (ifpersist, "ifpersist", true, false);
307 else if (!strcmp (var, "ifname"))
308 free (ifname), ifname = strdup (val);
309 else if (!strcmp (var, "rekey"))
310 rekey = atoi (val);
311 else if (!strcmp (var, "keepalive"))
312 keepalive = atoi (val);
313 else if (!strcmp (var, "mtu"))
314 mtu = atoi (val);
315 else if (!strcmp (var, "if-up"))
316 free (script_if_up), script_if_up = strdup (val);
317 else if (!strcmp (var, "node-up"))
318 free (script_node_up), script_node_up = strdup (val);
319 else if (!strcmp (var, "node-down"))
320 free (script_node_down), script_node_down = strdup (val);
321 else if (!strcmp (var, "pid-file"))
322 free (pidfilename), pidfilename = strdup (val);
323 else if (!strcmp (var, "dns-forw-host"))
324 {
325#if ENABLE_DNS
326 free (dns_forw_host), dns_forw_host = strdup (val);
327#endif
328 }
329 else if (!strcmp (var, "dns-forw-port"))
330 {
331#if ENABLE_DNS
332 dns_forw_port = atoi (val);
333#endif
334 }
335 else if (!strcmp (var, "http-proxy-host"))
336 {
337#if ENABLE_HTTP_PROXY
338 free (proxy_host), proxy_host = strdup (val);
339#endif
340 }
341 else if (!strcmp (var, "http-proxy-port"))
342 {
343#if ENABLE_HTTP_PROXY
344 proxy_port = atoi (val);
345#endif
346 }
347 else if (!strcmp (var, "http-proxy-auth"))
348 {
349#if ENABLE_HTTP_PROXY
350 proxy_auth = (char *)base64_encode ((const u8 *)val, strlen (val));
351#endif
352 }
353
354 /* node-specific, non-defaultable */
355 else if (node != &default_node && !strcmp (var, "hostname"))
356 free (node->hostname), node->hostname = strdup (val);
357
358 /* node-specific, defaultable */
359 else if (!strcmp (var, "udp-port"))
360 node->udp_port = atoi (val);
361 else if (!strcmp (var, "tcp-port"))
362 node->tcp_port = atoi (val);
363 else if (!strcmp (var, "dns-hostname"))
364 {
365#if ENABLE_DNS
366 free (node->dns_hostname), node->dns_hostname = strdup (val);
367#endif
368 }
369 else if (!strcmp (var, "dns-port"))
370 {
371#if ENABLE_DNS
372 node->dns_port = atoi (val);
373#endif
374 }
375 else if (!strcmp (var, "dns-domain"))
376 {
377#if ENABLE_DNS
378 free (node->domain), node->domain = strdup (val);
379#endif
380 }
381 else if (!strcmp (var, "router-priority"))
382 node->routerprio = atoi (val);
383 else if (!strcmp (var, "max-retry"))
384 node->max_retry = atoi (val);
385 else if (!strcmp (var, "connect"))
386 {
387 if (!strcmp (val, "ondemand"))
388 node->connectmode = conf_node::C_ONDEMAND;
389 else if (!strcmp (val, "never"))
390 node->connectmode = conf_node::C_NEVER;
391 else if (!strcmp (val, "always"))
392 node->connectmode = conf_node::C_ALWAYS;
393 else if (!strcmp (val, "disabled"))
394 node->connectmode = conf_node::C_DISABLED;
395 else
396 slog (L_WARN,
397 _("illegal value for 'connectmode', use one of 'ondemand', 'never', 'always' or 'disabled', at '%s' line %d, ignoring."),
398 var, fname, lineno);
399 }
400 else if (!strcmp (var, "inherit-tos"))
401 parse_bool (node->inherit_tos, "inherit-tos", true, false);
402 else if (!strcmp (var, "compress"))
403 parse_bool (node->compress, "compress", true, false);
404 // all these bool options really really cost a lot of executable size!
405 else if (!strcmp (var, "enable-tcp"))
406 {
407#if ENABLE_TCP
408 u8 v; parse_bool (v, "enable-tcp" , PROT_TCPv4, 0); node->protocols = (node->protocols & ~PROT_TCPv4) | v;
409#endif
410 }
411 else if (!strcmp (var, "enable-icmp"))
412 {
413#if ENABLE_ICMP
414 u8 v; parse_bool (v, "enable-icmp" , PROT_ICMPv4, 0); node->protocols = (node->protocols & ~PROT_ICMPv4) | v;
415#endif
416 }
417 else if (!strcmp (var, "enable-dns"))
418 {
419#if ENABLE_DNS
420 u8 v; parse_bool (v, "enable-dns" , PROT_DNSv4, 0); node->protocols = (node->protocols & ~PROT_DNSv4) | v;
421#endif
422 }
423 else if (!strcmp (var, "enable-udp"))
424 {
425 u8 v; parse_bool (v, "enable-udp" , PROT_UDPv4, 0); node->protocols = (node->protocols & ~PROT_UDPv4) | v;
426 }
427 else if (!strcmp (var, "enable-rawip"))
428 {
429 u8 v; parse_bool (v, "enable-rawip", PROT_IPv4, 0); node->protocols = (node->protocols & ~PROT_IPv4 ) | v;
430 }
431
432 // unknown or misplaced
433 else
434 slog (L_WARN,
435 _("unknown or misplaced variable `%s', at '%s' line %d, skipping."),
436 var, fname, lineno);
437 }
438
439 fclose (f);
440 }
441 else
442 {
443 slog (L_ERR, _("unable to read config file '%s': %s"), fname, strerror (errno));
444 exit (EXIT_FAILURE);
445 }
446
447 free (fname);
448
449 fname = config_filename (prikeyfile, "hostkey");
450
451 f = fopen (fname, "r");
452 if (f)
453 {
454 rsa_key = RSA_new ();
455
456 if (!PEM_read_RSAPrivateKey (f, &rsa_key, NULL, NULL))
457 {
458 ERR_load_RSA_strings (); ERR_load_PEM_strings ();
459 slog (L_ERR, _("unable to read private rsa key file '%s': %s"), fname, ERR_error_string (ERR_get_error (), 0));
460 exit (EXIT_FAILURE);
461 }
462
463 require (RSA_blinding_on (rsa_key, 0));
464
465 fclose (f);
466 }
467 else
468 {
469 slog (need_keys ? L_ERR : L_NOTICE, _("unable to open private rsa key file '%s': %s"), fname, strerror (errno));
470
471 if (need_keys)
472 exit (EXIT_FAILURE);
473 }
474
475 if (need_keys && ::thisnode
476 && rsa_key && thisnode && thisnode->rsa_key)
477 if (BN_cmp (rsa_key->n, thisnode->rsa_key->n) != 0
478 || BN_cmp (rsa_key->e, thisnode->rsa_key->e) != 0)
479 {
480 slog (L_NOTICE, _("private hostkey and public node key mismatch: is '%s' the correct node?"), ::thisnode);
481 exit (EXIT_FAILURE);
482 }
483
484 free (fname);
485}
486
487char *configuration::config_filename (const char *name, const char *dflt)
488{
489 char *fname;
490
491 asprintf (&fname, name ? name : dflt, ::thisnode);
492
493 if (!ABSOLUTE_PATH (fname))
494 {
495 char *rname = fname;
496 asprintf (&fname, "%s/%s", confbase, rname);
497 free (rname);
498 }
499
500 return fname;
501}
502
503void
504configuration::print ()
505{
506 printf (_("\nConfiguration\n\n"));
507 printf (_("# of nodes: %d\n"), nodes.size ());
508 printf (_("this node: %s\n"), thisnode ? thisnode->nodename : "<unset>");
509 printf (_("MTU: %d\n"), mtu);
510 printf (_("rekeying interval: %d\n"), rekey);
511 printf (_("keepalive interval: %d\n"), keepalive);
512 printf (_("interface: %s\n"), ifname);
513 printf (_("primary rsa key: %s\n"), prikeyfile ? prikeyfile : "<default>");
514 printf (_("rsa key size: %d\n"), rsa_key ? RSA_size (rsa_key) * 8 : -1);
515 printf ("\n");
516
517 printf ("%4s %-17s %s %-8.8s %-10.10s %s\n",
518 _("ID#"), _("MAC"), _("Com"), _("Conmode"), _("Node"), _("Host:Port"));
519
520 for (node_vector::iterator i = nodes.begin (); i != nodes.end (); ++i)
521 (*i)->print ();
522
523 printf ("\n");
524}
525
526configuration::configuration ()
527{
528 asprintf (&confbase, "%s/gvpe", CONFDIR);
529
530 init ();
531}
532
533configuration::~configuration ()
534{
535 cleanup ();
536}
537
538

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