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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 1.35 by pcg, Fri Mar 18 01:53:05 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 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"),
223 var, fname, lineno);
224 break;
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 {
307 parse_bool (ifpersist, "ifpersist", true, false);
308 }
309 else if (!strcmp (var, "ifname"))
310 free (ifname), ifname = strdup (val);
311 else if (!strcmp (var, "rekey"))
312 rekey = atoi (val);
313 else if (!strcmp (var, "keepalive"))
314 keepalive = atoi (val);
315 else if (!strcmp (var, "mtu"))
316 mtu = atoi (val);
317 else if (!strcmp (var, "if-up"))
318 free (script_if_up), script_if_up = strdup (val);
319 else if (!strcmp (var, "node-up"))
320 free (script_node_up), script_node_up = strdup (val);
321 else if (!strcmp (var, "node-down"))
322 free (script_node_down), script_node_down = strdup (val);
323 else if (!strcmp (var, "pid-file"))
324 free (pidfilename), pidfilename = strdup (val);
325 else if (!strcmp (var, "dns-forw-host"))
326 {
327#if ENABLE_DNS
328 free (dns_forw_host), dns_forw_host = strdup (val);
329#endif
330 }
331 else if (!strcmp (var, "dns-forw-port"))
332 {
333#if ENABLE_DNS
334 dns_forw_port = atoi (val);
335#endif
336 }
337 else if (!strcmp (var, "http-proxy-host"))
338 {
339#if ENABLE_HTTP_PROXY
340 free (proxy_host), proxy_host = strdup (val);
341#endif
342 }
343 else if (!strcmp (var, "http-proxy-port"))
344 {
345#if ENABLE_HTTP_PROXY
346 proxy_port = atoi (val);
347#endif
348 }
349 else if (!strcmp (var, "http-proxy-auth"))
350 {
351#if ENABLE_HTTP_PROXY
352 proxy_auth = (char *)base64_encode ((const u8 *)val, strlen (val));
353#endif
354 }
355
356 /* node-specific, non-defaultable */
357 else if (node != &default_node && !strcmp (var, "hostname"))
358 free (node->hostname), node->hostname = strdup (val);
359
360 /* node-specific, defaultable */
361 else if (!strcmp (var, "udp-port"))
362 node->udp_port = atoi (val);
363 else if (!strcmp (var, "tcp-port"))
364 node->tcp_port = atoi (val);
365 else if (!strcmp (var, "dns-hostname"))
366 {
367#if ENABLE_DNS
368 free (node->dns_hostname), node->dns_hostname = strdup (val);
369#endif
370 }
371 else if (!strcmp (var, "dns-port"))
372 {
373#if ENABLE_DNS
374 node->dns_port = atoi (val);
375#endif
376 }
377 else if (!strcmp (var, "dns-domain"))
378 {
379#if ENABLE_DNS
380 free (node->domain), node->domain = strdup (val);
381#endif
382 }
383 else if (!strcmp (var, "router-priority"))
384 node->routerprio = atoi (val);
385 else if (!strcmp (var, "max-retry"))
386 node->max_retry = atoi (val);
387 else if (!strcmp (var, "connect"))
388 {
389 if (!strcmp (val, "ondemand"))
390 node->connectmode = conf_node::C_ONDEMAND;
391 else if (!strcmp (val, "never"))
392 node->connectmode = conf_node::C_NEVER;
393 else if (!strcmp (val, "always"))
394 node->connectmode = conf_node::C_ALWAYS;
395 else if (!strcmp (val, "disabled"))
396 node->connectmode = conf_node::C_DISABLED;
397 else
398 slog (L_WARN,
399 _("illegal value for 'connectmode', use one of 'ondemand', 'never', 'always' or 'disabled', at '%s' line %d"),
400 var, fname, lineno);
401 }
402 else if (!strcmp (var, "inherit-tos"))
403 {
404 parse_bool (node->inherit_tos, "inherit-tos", true, false);
405 }
406 else if (!strcmp (var, "compress"))
407 {
408 parse_bool (node->compress, "compress", true, false);
409 }
410 // all these bool options really really cost a lot of executable size!
411 else if (!strcmp (var, "enable-tcp"))
412 {
413#if ENABLE_TCP
414 u8 v; parse_bool (v, "enable-tcp" , PROT_TCPv4, 0); node->protocols = (node->protocols & ~PROT_TCPv4) | v;
415#endif
416 }
417 else if (!strcmp (var, "enable-icmp"))
418 {
419#if ENABLE_ICMP
420 u8 v; parse_bool (v, "enable-icmp" , PROT_ICMPv4, 0); node->protocols = (node->protocols & ~PROT_ICMPv4) | v;
421#endif
422 }
423 else if (!strcmp (var, "enable-dns"))
424 {
425#if ENABLE_DNS
426 u8 v; parse_bool (v, "enable-dns" , PROT_DNSv4, 0); node->protocols = (node->protocols & ~PROT_DNSv4) | v;
427#endif
428 }
429 else if (!strcmp (var, "enable-udp"))
430 {
431 u8 v; parse_bool (v, "enable-udp" , PROT_UDPv4, 0); node->protocols = (node->protocols & ~PROT_UDPv4) | v;
432 }
433 else if (!strcmp (var, "enable-rawip"))
434 {
435 u8 v; parse_bool (v, "enable-rawip", PROT_IPv4, 0); node->protocols = (node->protocols & ~PROT_IPv4 ) | v;
436 }
437
438 // unknown or misplaced
439 else
440 slog (L_WARN,
441 _("unknown or misplaced variable `%s', at '%s' line %d"),
442 var, fname, lineno);
443 }
444
445 fclose (f);
446 }
447 else
448 {
449 slog (L_ERR, _("unable to read config file '%s': %s"), fname, strerror (errno));
450 exit (EXIT_FAILURE);
451 }
452
453 free (fname);
454
455 fname = config_filename (prikeyfile, "hostkey");
456
457 f = fopen (fname, "r");
458 if (f)
459 {
460 rsa_key = RSA_new ();
461
462 if (!PEM_read_RSAPrivateKey (f, &rsa_key, NULL, NULL))
463 {
464 ERR_load_RSA_strings (); ERR_load_PEM_strings ();
465 slog (L_ERR, _("unable to read private rsa key file '%s': %s"), fname, ERR_error_string (ERR_get_error (), 0));
466 exit (EXIT_FAILURE);
467 }
468
469 require (RSA_blinding_on (rsa_key, 0));
470
471 fclose (f);
472 }
473 else
474 {
475 slog (need_keys ? L_ERR : L_NOTICE, _("unable to open private rsa key file '%s': %s"), fname, strerror (errno));
476
477 if (need_keys)
478 exit (EXIT_FAILURE);
479 }
480
481 if (need_keys && ::thisnode
482 && rsa_key && thisnode && thisnode->rsa_key)
483 if (BN_cmp (rsa_key->n, thisnode->rsa_key->n) != 0
484 || BN_cmp (rsa_key->e, thisnode->rsa_key->e) != 0)
485 {
486 slog (L_NOTICE, _("private hostkey and public node key mismatch: is '%s' the correct node?"), ::thisnode);
487 exit (EXIT_FAILURE);
488 }
489
490 free (fname);
491}
492
493char *configuration::config_filename (const char *name, const char *dflt)
494{
495 char *fname;
496
497 asprintf (&fname, name ? name : dflt, ::thisnode);
498
499 if (!ABSOLUTE_PATH (fname))
500 {
501 char *rname = fname;
502 asprintf (&fname, "%s/%s", confbase, rname);
503 free (rname);
504 }
505
506 return fname;
507}
508
509void
510configuration::print ()
511{
512 printf (_("\nConfiguration\n\n"));
513 printf (_("# of nodes: %d\n"), nodes.size ());
514 printf (_("this node: %s\n"), thisnode ? thisnode->nodename : "<unset>");
515 printf (_("MTU: %d\n"), mtu);
516 printf (_("rekeying interval: %d\n"), rekey);
517 printf (_("keepalive interval: %d\n"), keepalive);
518 printf (_("interface: %s\n"), ifname);
519 printf (_("primary rsa key: %s\n"), prikeyfile ? prikeyfile : "<default>");
520 printf (_("rsa key size: %d\n"), rsa_key ? RSA_size (rsa_key) * 8 : -1);
521 printf ("\n");
522
523 printf ("%4s %-17s %s %-8.8s %-10.10s %s\n",
524 _("ID#"), _("MAC"), _("Com"), _("Conmode"), _("Node"), _("Host:Port"));
525
526 for (node_vector::iterator i = nodes.begin (); i != nodes.end (); ++i)
527 (*i)->print ();
528
529 printf ("\n");
530}
531
532configuration::configuration ()
533{
534 asprintf (&confbase, "%s/gvpe", CONFDIR);
535
536 init ();
537}
538
539configuration::~configuration ()
540{
541 cleanup ();
542}
543
544

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