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Comparing gvpe/src/conf.C (file contents):
Revision 1.3 by pcg, Sun Mar 9 12:40:18 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
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 llevel = L_INFO;
71
72 default_node.port = DEFAULT_PORT;
73 default_node.connectmode = conf_node::C_ALWAYS;
74 default_node.compress = true;
75}
76
77void configuration::cleanup()
78{
79 if (rsa_key)
80 RSA_free (rsa_key);
81
82 free (ifname);
83
84 rsa_key = 0;
85 ifname = 0;
86}
87
88void
89configuration::clear_config ()
90{
91 for (configuration::node_vector::iterator i = nodes.begin(); i != nodes.end(); ++i)
92 delete *i;
93
94 nodes.clear ();
95
96 cleanup ();
97 init ();
98}
99
100void configuration::read_config (bool need_keys)
101{
102 char *fname;
103 FILE *f;
104
105 clear_config ();
106
107 asprintf (&fname, "%s/vped.conf", confbase);
108 f = fopen (fname, "r");
109
110 if (f)
111 {
112 char line[16384];
113 int lineno = 0;
114 char *var, *val;
115 conf_node *node = &default_node;
116
117 while (fgets (line, sizeof (line), f))
118 {
119 lineno++;
120
121 {
122 char *end = line + strlen (line);
123
124 while (*end < ' ' && end >= line)
125 end--;
126
127 *++end = 0;
128 }
129
130 char *tok = line;
131
132retry:
133 var = strtok (tok, "\t =");
134 tok = 0;
135
136 if (!var || !var[0])
137 continue; /* no tokens on this line */
138
139 if (var[0] == '#')
140 continue; /* comment: ignore */
141
142 val = strtok (NULL, "\t\n\r =");
143
144 if (!val || val[0] == '#')
145 {
146 slog (L_WARN,
147 _("no value for variable `%s', at '%s' line %d"),
148 var, fname, lineno);
149 break;
150 }
151
152 if (!strcmp (var, "on"))
153 {
154 if (!::thisnode
155 || (val[0] == '!' && strcmp (val + 1, ::thisnode))
156 || !strcmp (val, ::thisnode))
157 goto retry;
158
159 continue;
160 }
161
162 // truly global
163 if (!strcmp (var, "loglevel"))
164 {
165 loglevel l = string_to_loglevel (val);
166
167 if (l != L_NONE)
168 llevel = l;
169 else
170 slog (L_WARN, "'%s': %s, at '%s' line %d", val, UNKNOWN_LOGLEVEL, fname, line);
171 }
172
173 // per config
174 else if (!strcmp (var, "node"))
175 {
176 default_node.id++;
177
178 node = new conf_node (default_node);
179
180 nodes.push_back (node);
181
182 node->nodename = strdup (val);
183
184 {
185 char *fname;
186 FILE *f;
187
188 asprintf (&fname, "%s/pubkey/%s", confbase, node->nodename);
189
190 f = fopen (fname, "r");
191 if (f)
192 {
193 node->rsa_key = RSA_new ();
194
195 if (!PEM_read_RSAPublicKey(f, &node->rsa_key, NULL, NULL))
196 {
197 ERR_load_RSA_strings (); ERR_load_PEM_strings ();
198 slog (L_ERR, _("unable to open public rsa key file '%s': %s"), fname, ERR_error_string (ERR_get_error (), 0));
199 exit (1);
200 }
201
202 RSA_blinding_on (node->rsa_key, 0);
203
204 fclose (f);
205 }
206 else
207 {
208 slog (need_keys ? L_ERR : L_NOTICE, _("unable to read public rsa key file '%s': %s"), fname, strerror (errno));
209
210 if (need_keys)
211 exit (1);
212 }
213
214 free (fname);
215 }
216
217 if (!::thisnode || !strcmp (node->nodename, ::thisnode))
218 thisnode = node;
219 }
220 else if (!strcmp (var, "private-key"))
221 prikeyfile = strdup (val);
222 else if (!strcmp (var, "ifpersist"))
223 {
224 if (!strcmp (val, "yes"))
225 ifpersist = true;
226 else if (!strcmp (val, "no"))
227 ifpersist = false;
228 else
229 slog (L_WARN,
230 _("illegal value for 'ifpersist', only 'yes' or 'no' allowed, at '%s' line %d"),
231 var, fname, lineno);
232 }
233 else if (!strcmp (var, "ifname"))
234 ifname = strdup (val);
235 else if (!strcmp (var, "rekey"))
236 rekey = atoi (val);
237 else if (!strcmp (var, "keepalive"))
238 keepalive = atoi (val);
239 else if (!strcmp (var, "mtu"))
240 mtu = atoi (val);
241 else if (!strcmp (var, "if-up"))
242 script_if_up = strdup (val);
243 else if (!strcmp (var, "node-up"))
244 script_node_up = strdup (val);
245 else if (!strcmp (var, "node-down"))
246 script_node_down = strdup (val);
247
248 /* node-specific, non-defaultable */
249 else if (node != &default_node && !strcmp (var, "hostname"))
250 {
251 free (node->hostname);
252 node->hostname = strdup (val);
253 }
254
255 /* node-specific, defaultable */
256 else if (!strcmp (var, "port"))
257 node->port = atoi (val);
258 else if (!strcmp (var, "router-priority"))
259 node->routerprio = atoi (val);
260 else if (!strcmp (var, "connect"))
261 {
262 if (!strcmp (val, "ondemand"))
263 node->connectmode = conf_node::C_ONDEMAND;
264 else if (!strcmp (val, "never"))
265 node->connectmode = conf_node::C_NEVER;
266 else if (!strcmp (val, "always"))
267 node->connectmode = conf_node::C_ALWAYS;
268 else
269 slog (L_WARN,
270 _("illegal value for 'connectmode', use one of 'ondemand', 'never' or 'always', at '%s' line %d"),
271 var, fname, lineno);
272 }
273 else if (!strcmp (var, "inherit-tos"))
274 {
275 if (!strcmp (val, "yes"))
276 node->inherit_tos = true;
277 else if (!strcmp (val, "no"))
278 node->inherit_tos = false;
279 else
280 slog (L_WARN,
281 _("illegal value for 'compress', only 'yes' or 'no' allowed, at '%s' line %d"),
282 var, fname, lineno);
283 }
284
285 else if (!strcmp (var, "compress"))
286 {
287 if (!strcmp (val, "yes"))
288 node->compress = true;
289 else if (!strcmp (val, "no"))
290 node->compress = false;
291 else
292 slog (L_WARN,
293 _("illegal value for 'compress', only 'yes' or 'no' allowed, at '%s' line %d"),
294 var, fname, lineno);
295 }
296
297 // unknown or misplaced
298 else
299 {
300 slog (L_WARN,
301 _("unknown or misplaced variable `%s', at '%s' line %d"),
302 var, fname, lineno);
303 }
304 }
305
306 fclose (f);
307 }
308 else
309 {
310 slog (L_ERR, _("unable to read config file '%s': %s"), fname, strerror (errno));
311 exit (1);
312 }
313
314 free (fname);
315
316 fname = config_filename (prikeyfile, "hostkey");
317
318 f = fopen (fname, "r");
319 if (f)
320 {
321 rsa_key = RSA_new ();
322
323 if (!PEM_read_RSAPrivateKey (f, &rsa_key, NULL, NULL))
324 {
325 ERR_load_RSA_strings (); ERR_load_PEM_strings ();
326 slog (L_ERR, _("unable to read private rsa key file '%s': %s"), fname, ERR_error_string (ERR_get_error (), 0));
327 exit (1);
328 }
329
330 RSA_blinding_on (rsa_key, 0);
331
332 fclose (f);
333 }
334 else
335 {
336 slog (need_keys ? L_ERR : L_NOTICE, _("unable to open private rsa key file '%s': %s"), fname, strerror (errno));
337
338 if (need_keys)
339 exit (1);
340 }
341
342 free (fname);
343}
344
345char *configuration::config_filename (const char *name, const char *dflt)
346{
347 char *fname;
348
349 asprintf (&fname, name ? name : dflt, ::thisnode);
350
351 if (!ABSOLUTE_PATH (fname))
352 {
353 char *rname = fname;
354 asprintf (&fname, "%s/%s", confbase, rname);
355 free (rname);
356 }
357
358 return fname; 60 return 0;
359} 61}
360 62
361void 63const char *strprotocol (u8 protocol)
362configuration::print ()
363{ 64{
364 printf (_("\nConfiguration\n\n")); 65 if (protocol & PROT_IPv4 ) return "rawip";
365 printf (_("# of nodes: %d\n"), nodes.size ()); 66 if (protocol & PROT_ICMPv4) return "icmp";
366 printf (_("this node: %s\n"), thisnode ? thisnode->nodename : "<unset>"); 67 if (protocol & PROT_UDPv4 ) return "udp";
367 printf (_("MTU: %d\n"), mtu); 68 if (protocol & PROT_TCPv4 ) return "tcp";
368 printf (_("rekeying interval: %d\n"), rekey); 69 if (protocol & PROT_DNSv4 ) return "dns";
369 printf (_("keepalive interval: %d\n"), keepalive);
370 printf (_("interface: %s\n"), ifname);
371 printf (_("primary rsa key: %s\n"), prikeyfile ? prikeyfile : "<default>");
372 printf (_("rsa key size: %d\n"), rsa_key ? RSA_size (rsa_key) : -1);
373 printf ("\n");
374 70
375 printf ("%4s %-17s %s %-8.8s %-10.10s %s\n", 71 return "<unknown>";
376 _("ID#"), _("MAC"), _("Com"), _("Conmode"), _("Node"), _("Host:Port"));
377
378 for (node_vector::iterator i = nodes.begin (); i != nodes.end (); ++i)
379 (*i)->print ();
380
381 printf ("\n");
382} 72}
383 73
384void 74void
385conf_node::print () 75conf_node::print ()
386{ 76{
… …
392 connectmode == C_NEVER ? "never" : 82 connectmode == C_NEVER ? "never" :
393 connectmode == C_ALWAYS ? "always" : "", 83 connectmode == C_ALWAYS ? "always" : "",
394 nodename, 84 nodename,
395 hostname ? hostname : "", 85 hostname ? hostname : "",
396 hostname ? ":" : "", 86 hostname ? ":" : "",
397 hostname ? port : 0 87 hostname ? udp_port : 0
398 ); 88 );
399} 89}
400 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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