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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 1.32 by pcg, Sat Mar 5 15:48:54 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#include <openssl/bn.h>
40 41
41#include "gettext.h" 42#include "gettext.h"
42 43
43#include "conf.h" 44#include "conf.h"
44#include "slog.h" 45#include "slog.h"
45#include "util.h" 46#include "util.h"
46 47
47char *confbase; 48char *confbase;
48char *thisnode; 49char *thisnode;
49char *identname; 50char *identname;
50char *pidfilename;
51 51
52struct configuration conf; 52struct configuration conf;
53 53
54configuration::configuration () 54u8 best_protocol (u8 protset)
55{ 55{
56 init (); 56 if (protset & PROT_IPv4 ) return PROT_IPv4;
57} 57 if (protset & PROT_ICMPv4) return PROT_ICMPv4;
58 if (protset & PROT_UDPv4 ) return PROT_UDPv4;
59 if (protset & PROT_TCPv4 ) return PROT_TCPv4;
60 if (protset & PROT_DNSv4 ) return PROT_DNSv4;
58 61
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; 62 return 0;
346} 63}
347 64
348void 65const char *strprotocol (u8 protocol)
349configuration::print ()
350{ 66{
351 printf (_("\nConfiguration\n\n")); 67 if (protocol & PROT_IPv4 ) return "rawip";
352 printf (_("# of nodes: %d\n"), nodes.size ()); 68 if (protocol & PROT_ICMPv4) return "icmp";
353 printf (_("this node: %s\n"), thisnode ? thisnode->nodename : "<unset>"); 69 if (protocol & PROT_UDPv4 ) return "udp";
354 printf (_("MTU: %d\n"), mtu); 70 if (protocol & PROT_TCPv4 ) return "tcp";
355 printf (_("rekeying interval: %d\n"), rekey); 71 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 72
362 printf ("%4s %-17s %s %-8.8s %-10.10s %s\n", 73 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} 74}
370 75
371void 76void
372conf_node::print () 77conf_node::print ()
373{ 78{
… …
379 connectmode == C_NEVER ? "never" : 84 connectmode == C_NEVER ? "never" :
380 connectmode == C_ALWAYS ? "always" : "", 85 connectmode == C_ALWAYS ? "always" : "",
381 nodename, 86 nodename,
382 hostname ? hostname : "", 87 hostname ? hostname : "",
383 hostname ? ":" : "", 88 hostname ? ":" : "",
384 hostname ? port : 0 89 hostname ? udp_port : 0
385 ); 90 );
386} 91}
387 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_port = 53;
129#endif
130
131 conf.pidfilename = strdup (LOCALSTATEDIR "/run/gvpe.pid");
132}
133
134void configuration::cleanup()
135{
136 if (rsa_key)
137 RSA_free (rsa_key);
138
139 rsa_key = 0;
140
141 free (pidfilename); pidfilename = 0;
142 free (ifname); ifname = 0;
143#if ENABLE_HTTP_PROXY
144 free (proxy_host); proxy_host = 0;
145 free (proxy_auth); proxy_auth = 0;
146#endif
147#if ENABLE_DNS
148 free (dns_forw_host); dns_forw_host = 0;
149#endif
150}
151
152void
153configuration::clear_config ()
154{
155 for (configuration::node_vector::iterator i = nodes.begin(); i != nodes.end(); ++i)
156 delete *i;
157
158 nodes.clear ();
159
160 cleanup ();
161 init ();
162}
163
164#define parse_bool(target,name,trueval,falseval) \
165 if (!strcmp (val, "yes")) target = trueval; \
166 else if (!strcmp (val, "no")) target = falseval; \
167 else if (!strcmp (val, "true")) target = trueval; \
168 else if (!strcmp (val, "false")) target = falseval; \
169 else if (!strcmp (val, "on")) target = trueval; \
170 else if (!strcmp (val, "off")) target = falseval; \
171 else \
172 slog (L_WARN, \
173 _("illegal value for '%s', only 'yes|true|on' or 'no|false|off' allowed, at '%s' line %d"), \
174 name, var, fname, lineno);
175
176void configuration::read_config (bool need_keys)
177{
178 char *fname;
179 FILE *f;
180
181 clear_config ();
182
183 asprintf (&fname, "%s/gvpe.conf", confbase);
184 f = fopen (fname, "r");
185
186 if (f)
187 {
188 char line[16384];
189 int lineno = 0;
190 char *var, *val;
191 conf_node *node = &default_node;
192
193 while (fgets (line, sizeof (line), f))
194 {
195 lineno++;
196
197 {
198 char *end = line + strlen (line);
199
200 while (*end < ' ' && end >= line)
201 end--;
202
203 *++end = 0;
204 }
205
206 char *tok = line;
207
208retry:
209 var = strtok (tok, "\t =");
210 tok = 0;
211
212 if (!var || !var[0])
213 continue; /* no tokens on this line */
214
215 if (var[0] == '#')
216 continue; /* comment: ignore */
217
218 val = strtok (NULL, "\t\n\r =");
219
220 if (!val || val[0] == '#')
221 {
222 slog (L_WARN,
223 _("no value for variable `%s', at '%s' line %d"),
224 var, fname, lineno);
225 break;
226 }
227
228 if (!strcmp (var, "on"))
229 {
230 if (!::thisnode
231 || (val[0] == '!' && strcmp (val + 1, ::thisnode))
232 || !strcmp (val, ::thisnode))
233 goto retry;
234
235 continue;
236 }
237
238 // truly global
239 if (!strcmp (var, "loglevel"))
240 {
241 loglevel l = string_to_loglevel (val);
242
243 if (l != L_NONE)
244 llevel = l;
245 else
246 slog (L_WARN, "'%s': %s, at '%s' line %d", val, UNKNOWN_LOGLEVEL, fname, line);
247 }
248 else if (!strcmp (var, "ip-proto"))
249 ip_proto = atoi (val);
250 else if (!strcmp (var, "icmp-type"))
251 {
252#if ENABLE_ICMP
253 icmp_type = atoi (val);
254#endif
255 }
256
257 // per config
258 else if (!strcmp (var, "node"))
259 {
260 default_node.id++;
261
262 node = new conf_node (default_node);
263
264 nodes.push_back (node);
265
266 node->nodename = strdup (val);
267
268 {
269 char *fname;
270 FILE *f;
271
272 asprintf (&fname, "%s/pubkey/%s", confbase, node->nodename);
273
274 f = fopen (fname, "r");
275 if (f)
276 {
277 node->rsa_key = RSA_new ();
278
279 if (!PEM_read_RSAPublicKey(f, &node->rsa_key, NULL, NULL))
280 {
281 ERR_load_RSA_strings (); ERR_load_PEM_strings ();
282 slog (L_ERR, _("unable to open public rsa key file '%s': %s"), fname, ERR_error_string (ERR_get_error (), 0));
283 exit (EXIT_FAILURE);
284 }
285
286 require (RSA_blinding_on (node->rsa_key, 0));
287
288 fclose (f);
289 }
290 else
291 {
292 slog (need_keys ? L_ERR : L_NOTICE, _("unable to read public rsa key file '%s': %s"), fname, strerror (errno));
293
294 if (need_keys)
295 exit (EXIT_FAILURE);
296 }
297
298 free (fname);
299 }
300
301 if (::thisnode && !strcmp (node->nodename, ::thisnode))
302 thisnode = node;
303 }
304 else if (!strcmp (var, "private-key"))
305 free (prikeyfile), prikeyfile = strdup (val);
306 else if (!strcmp (var, "ifpersist"))
307 {
308 parse_bool (ifpersist, "ifpersist", true, false);
309 }
310 else if (!strcmp (var, "ifname"))
311 free (ifname), ifname = strdup (val);
312 else if (!strcmp (var, "rekey"))
313 rekey = atoi (val);
314 else if (!strcmp (var, "keepalive"))
315 keepalive = atoi (val);
316 else if (!strcmp (var, "mtu"))
317 mtu = atoi (val);
318 else if (!strcmp (var, "if-up"))
319 free (script_if_up), script_if_up = strdup (val);
320 else if (!strcmp (var, "node-up"))
321 free (script_node_up), script_node_up = strdup (val);
322 else if (!strcmp (var, "node-down"))
323 free (script_node_down), script_node_down = strdup (val);
324 else if (!strcmp (var, "pid-file"))
325 free (pidfilename), pidfilename = strdup (val);
326#if ENABLE_DNS
327 else if (!strcmp (var, "dns-forw-host"))
328 free (dns_forw_host), dns_forw_host = strdup (val);
329 else if (!strcmp (var, "dns-forw-port"))
330 dns_forw_port = atoi (val);
331#endif
332 else if (!strcmp (var, "http-proxy-host"))
333 {
334#if ENABLE_HTTP_PROXY
335 free (proxy_host), proxy_host = strdup (val);
336#endif
337 }
338 else if (!strcmp (var, "http-proxy-port"))
339 {
340#if ENABLE_HTTP_PROXY
341 proxy_port = atoi (val);
342#endif
343 }
344 else if (!strcmp (var, "http-proxy-auth"))
345 {
346#if ENABLE_HTTP_PROXY
347 proxy_auth = (char *)base64_encode ((const u8 *)val, strlen (val));
348#endif
349 }
350
351 /* node-specific, non-defaultable */
352 else if (node != &default_node && !strcmp (var, "hostname"))
353 free (node->hostname), node->hostname = strdup (val);
354
355 /* node-specific, defaultable */
356 else if (!strcmp (var, "udp-port"))
357 node->udp_port = atoi (val);
358 else if (!strcmp (var, "tcp-port"))
359 node->tcp_port = atoi (val);
360#if ENABLE_DNS
361 else if (!strcmp (var, "dns-hostname"))
362 free (node->dns_hostname), node->dns_hostname = strdup (val);
363 else if (!strcmp (var, "dns-port"))
364 node->dns_port = atoi (val);
365#endif
366 else if (!strcmp (var, "dns-domain"))
367 {
368#if ENABLE_DNS
369 free (node->domain), node->domain = strdup (val);
370#endif
371 }
372 else if (!strcmp (var, "router-priority"))
373 node->routerprio = atoi (val);
374 else if (!strcmp (var, "max-retry"))
375 node->max_retry = atoi (val);
376 else if (!strcmp (var, "connect"))
377 {
378 if (!strcmp (val, "ondemand"))
379 node->connectmode = conf_node::C_ONDEMAND;
380 else if (!strcmp (val, "never"))
381 node->connectmode = conf_node::C_NEVER;
382 else if (!strcmp (val, "always"))
383 node->connectmode = conf_node::C_ALWAYS;
384 else if (!strcmp (val, "disabled"))
385 node->connectmode = conf_node::C_DISABLED;
386 else
387 slog (L_WARN,
388 _("illegal value for 'connectmode', use one of 'ondemand', 'never', 'always' or 'disabled', at '%s' line %d"),
389 var, fname, lineno);
390 }
391 else if (!strcmp (var, "inherit-tos"))
392 {
393 parse_bool (node->inherit_tos, "inherit-tos", true, false);
394 }
395 else if (!strcmp (var, "compress"))
396 {
397 parse_bool (node->compress, "compress", true, false);
398 }
399 // all these bool options really really cost a lot of executable size!
400 else if (!strcmp (var, "enable-tcp"))
401 {
402#if ENABLE_TCP
403 u8 v; parse_bool (v, "enable-tcp" , PROT_TCPv4, 0); node->protocols = (node->protocols & ~PROT_TCPv4) | v;
404#endif
405 }
406 else if (!strcmp (var, "enable-icmp"))
407 {
408#if ENABLE_ICMP
409 u8 v; parse_bool (v, "enable-icmp" , PROT_ICMPv4, 0); node->protocols = (node->protocols & ~PROT_ICMPv4) | v;
410#endif
411 }
412 else if (!strcmp (var, "enable-dns"))
413 {
414#if ENABLE_DNS
415 u8 v; parse_bool (v, "enable-dns" , PROT_DNSv4, 0); node->protocols = (node->protocols & ~PROT_DNSv4) | v;
416#endif
417 }
418 else if (!strcmp (var, "enable-udp"))
419 {
420 u8 v; parse_bool (v, "enable-udp" , PROT_UDPv4, 0); node->protocols = (node->protocols & ~PROT_UDPv4) | v;
421 }
422 else if (!strcmp (var, "enable-rawip"))
423 {
424 u8 v; parse_bool (v, "enable-rawip", PROT_IPv4, 0); node->protocols = (node->protocols & ~PROT_IPv4 ) | v;
425 }
426
427 // unknown or misplaced
428 else
429 slog (L_WARN,
430 _("unknown or misplaced variable `%s', at '%s' line %d"),
431 var, fname, lineno);
432 }
433
434 fclose (f);
435 }
436 else
437 {
438 slog (L_ERR, _("unable to read config file '%s': %s"), fname, strerror (errno));
439 exit (EXIT_FAILURE);
440 }
441
442 free (fname);
443
444 fname = config_filename (prikeyfile, "hostkey");
445
446 f = fopen (fname, "r");
447 if (f)
448 {
449 rsa_key = RSA_new ();
450
451 if (!PEM_read_RSAPrivateKey (f, &rsa_key, NULL, NULL))
452 {
453 ERR_load_RSA_strings (); ERR_load_PEM_strings ();
454 slog (L_ERR, _("unable to read private rsa key file '%s': %s"), fname, ERR_error_string (ERR_get_error (), 0));
455 exit (EXIT_FAILURE);
456 }
457
458 require (RSA_blinding_on (rsa_key, 0));
459
460 fclose (f);
461 }
462 else
463 {
464 slog (need_keys ? L_ERR : L_NOTICE, _("unable to open private rsa key file '%s': %s"), fname, strerror (errno));
465
466 if (need_keys)
467 exit (EXIT_FAILURE);
468 }
469
470 if (need_keys && ::thisnode
471 && rsa_key && thisnode && thisnode->rsa_key)
472 if (BN_cmp (rsa_key->n, thisnode->rsa_key->n) != 0
473 || BN_cmp (rsa_key->e, thisnode->rsa_key->e) != 0)
474 {
475 slog (L_NOTICE, _("private hostkey and public node key mismatch: is '%s' the correct node?"), ::thisnode);
476 exit (EXIT_FAILURE);
477 }
478
479 free (fname);
480}
481
482char *configuration::config_filename (const char *name, const char *dflt)
483{
484 char *fname;
485
486 asprintf (&fname, name ? name : dflt, ::thisnode);
487
488 if (!ABSOLUTE_PATH (fname))
489 {
490 char *rname = fname;
491 asprintf (&fname, "%s/%s", confbase, rname);
492 free (rname);
493 }
494
495 return fname;
496}
497
498void
499configuration::print ()
500{
501 printf (_("\nConfiguration\n\n"));
502 printf (_("# of nodes: %d\n"), nodes.size ());
503 printf (_("this node: %s\n"), thisnode ? thisnode->nodename : "<unset>");
504 printf (_("MTU: %d\n"), mtu);
505 printf (_("rekeying interval: %d\n"), rekey);
506 printf (_("keepalive interval: %d\n"), keepalive);
507 printf (_("interface: %s\n"), ifname);
508 printf (_("primary rsa key: %s\n"), prikeyfile ? prikeyfile : "<default>");
509 printf (_("rsa key size: %d\n"), rsa_key ? RSA_size (rsa_key) * 8 : -1);
510 printf ("\n");
511
512 printf ("%4s %-17s %s %-8.8s %-10.10s %s\n",
513 _("ID#"), _("MAC"), _("Com"), _("Conmode"), _("Node"), _("Host:Port"));
514
515 for (node_vector::iterator i = nodes.begin (); i != nodes.end (); ++i)
516 (*i)->print ();
517
518 printf ("\n");
519}
520
521configuration::configuration ()
522{
523 asprintf (&confbase, "%s/gvpe", CONFDIR);
524
525 init ();
526}
527
528configuration::~configuration ()
529{
530 cleanup ();
531}
532
533

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