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Comparing gvpe/src/conf.C (file contents):
Revision 1.6 by pcg, Fri Mar 28 16:14:40 2003 UTC vs.
Revision 1.34 by pcg, Thu Mar 17 23:59:37 2005 UTC

1/* 1/*
2 conf.c -- configuration code 2 conf.c -- configuration code
3 Copyright (C) 1998 Robert van der Meulen 3 Copyright (C) 2003-2005 Marc Lehmann <gvpe@schmorp.de>
4 1998-2002 Ivo Timmermans <ivo@o2w.nl>
5 2000-2002 Guus Sliepen <guus@sliepen.eu.org>
6 2000 Cris van Pelt <tribbel@arise.dhs.org>
7 2003 Marc Lehmann <pcg@goof.com>
8 4
5 This file is part of GVPE.
6
9 This program is free software; you can redistribute it and/or modify 7 GVPE is free software; you can redistribute it and/or modify
10 it under the terms of the GNU General Public License as published by 8 it under the terms of the GNU General Public License as published by
11 the Free Software Foundation; either version 2 of the License, or 9 the Free Software Foundation; either version 2 of the License, or
12 (at your option) any later version. 10 (at your option) any later version.
13 11
14 This program is distributed in the hope that it will be useful, 12 This program is distributed in the hope that it will be useful,
15 but WITHOUT ANY WARRANTY; without even the implied warranty of 13 but WITHOUT ANY WARRANTY; without even the implied warranty of
16 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17 GNU General Public License for more details. 15 GNU General Public License for more details.
18 16
19 You should have received a copy of the GNU General Public License 17 You should have received a copy of the GNU General Public License
20 along with this program; if not, write to the Free Software 18 along with gvpe; if not, write to the Free Software
21 Foundation, Inc. 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA 19 Foundation, Inc. 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
22*/ 20*/
23 21
24#include "config.h" 22#include "config.h"
25 23
… …
31#include <netdb.h> 29#include <netdb.h>
32#include <sys/stat.h> 30#include <sys/stat.h>
33#include <sys/types.h> 31#include <sys/types.h>
34#include <unistd.h> 32#include <unistd.h>
35 33
36#include <netinet/in.h> 34#include "netcompat.h"
37 35
38#include <openssl/err.h> 36#include <openssl/err.h>
39#include <openssl/pem.h> 37#include <openssl/pem.h>
40#include <openssl/rsa.h> 38#include <openssl/rsa.h>
41#include <openssl/rand.h> 39#include <openssl/rand.h>
40#include <openssl/bn.h>
42 41
43#include "gettext.h" 42#include "gettext.h"
44 43
45#include "conf.h" 44#include "conf.h"
46#include "slog.h" 45#include "slog.h"
47#include "util.h" 46#include "util.h"
48 47
49char *confbase; 48char *confbase;
50char *thisnode; 49char *thisnode;
51char *identname; 50char *identname;
52char *pidfilename;
53 51
54struct configuration conf; 52struct configuration conf;
55 53
56configuration::configuration () 54u8 best_protocol (u8 protset)
57{ 55{
58 init (); 56 if (protset & PROT_IPv4 ) return PROT_IPv4;
59} 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;
60 61
61configuration::~configuration ()
62{
63 cleanup ();
64}
65
66void configuration::init ()
67{
68 memset (this, 0, sizeof (*this));
69
70 rekey = DEFAULT_REKEY;
71 keepalive = DEFAULT_KEEPALIVE;
72 llevel = L_INFO;
73 ip_proto = IPPROTO_GRE;
74
75 default_node.udp_port = DEFAULT_UDPPORT;
76 default_node.connectmode = conf_node::C_ALWAYS;
77 default_node.compress = true;
78 default_node.protocols = PROT_UDPv4;
79}
80
81void configuration::cleanup()
82{
83 if (rsa_key)
84 RSA_free (rsa_key);
85
86 free (ifname);
87
88 rsa_key = 0;
89 ifname = 0;
90}
91
92void
93configuration::clear_config ()
94{
95 for (configuration::node_vector::iterator i = nodes.begin(); i != nodes.end(); ++i)
96 delete *i;
97
98 nodes.clear ();
99
100 cleanup ();
101 init ();
102}
103
104#define parse_bool(target,name,trueval,falseval) \
105 if (!strcmp (val, "yes")) target = trueval; \
106 else if (!strcmp (val, "no")) target = falseval; \
107 else if (!strcmp (val, "true")) target = trueval; \
108 else if (!strcmp (val, "false")) target = falseval; \
109 else if (!strcmp (val, "on")) target = trueval; \
110 else if (!strcmp (val, "off")) target = falseval; \
111 else \
112 slog (L_WARN, \
113 _("illegal value for '%s', only 'yes|true|on' or 'no|false|off' allowed, at '%s' line %d"), \
114 name, var, fname, lineno);
115
116void configuration::read_config (bool need_keys)
117{
118 char *fname;
119 FILE *f;
120
121 clear_config ();
122
123 asprintf (&fname, "%s/vped.conf", confbase);
124 f = fopen (fname, "r");
125
126 if (f)
127 {
128 char line[16384];
129 int lineno = 0;
130 char *var, *val;
131 conf_node *node = &default_node;
132
133 while (fgets (line, sizeof (line), f))
134 {
135 lineno++;
136
137 {
138 char *end = line + strlen (line);
139
140 while (*end < ' ' && end >= line)
141 end--;
142
143 *++end = 0;
144 }
145
146 char *tok = line;
147
148retry:
149 var = strtok (tok, "\t =");
150 tok = 0;
151
152 if (!var || !var[0])
153 continue; /* no tokens on this line */
154
155 if (var[0] == '#')
156 continue; /* comment: ignore */
157
158 val = strtok (NULL, "\t\n\r =");
159
160 if (!val || val[0] == '#')
161 {
162 slog (L_WARN,
163 _("no value for variable `%s', at '%s' line %d"),
164 var, fname, lineno);
165 break;
166 }
167
168 if (!strcmp (var, "on"))
169 {
170 if (!::thisnode
171 || (val[0] == '!' && strcmp (val + 1, ::thisnode))
172 || !strcmp (val, ::thisnode))
173 goto retry;
174
175 continue;
176 }
177
178 // truly global
179 if (!strcmp (var, "loglevel"))
180 {
181 loglevel l = string_to_loglevel (val);
182
183 if (l != L_NONE)
184 llevel = l;
185 else
186 slog (L_WARN, "'%s': %s, at '%s' line %d", val, UNKNOWN_LOGLEVEL, fname, line);
187 }
188 else if (!strcmp (var, "ip-proto"))
189 ip_proto = atoi (val);
190
191 // per config
192 else if (!strcmp (var, "node"))
193 {
194 default_node.id++;
195
196 node = new conf_node (default_node);
197
198 nodes.push_back (node);
199
200 node->nodename = strdup (val);
201
202 {
203 char *fname;
204 FILE *f;
205
206 asprintf (&fname, "%s/pubkey/%s", confbase, node->nodename);
207
208 f = fopen (fname, "r");
209 if (f)
210 {
211 node->rsa_key = RSA_new ();
212
213 if (!PEM_read_RSAPublicKey(f, &node->rsa_key, NULL, NULL))
214 {
215 ERR_load_RSA_strings (); ERR_load_PEM_strings ();
216 slog (L_ERR, _("unable to open public rsa key file '%s': %s"), fname, ERR_error_string (ERR_get_error (), 0));
217 exit (1);
218 }
219
220 RSA_blinding_on (node->rsa_key, 0);
221
222 fclose (f);
223 }
224 else
225 {
226 slog (need_keys ? L_ERR : L_NOTICE, _("unable to read public rsa key file '%s': %s"), fname, strerror (errno));
227
228 if (need_keys)
229 exit (1);
230 }
231
232 free (fname);
233 }
234
235 if (!::thisnode || !strcmp (node->nodename, ::thisnode))
236 thisnode = node;
237 }
238 else if (!strcmp (var, "private-key"))
239 prikeyfile = strdup (val);
240 else if (!strcmp (var, "ifpersist"))
241 {
242 parse_bool (ifpersist, "ifpersist", true, false);
243 }
244 else if (!strcmp (var, "ifname"))
245 ifname = strdup (val);
246 else if (!strcmp (var, "rekey"))
247 rekey = atoi (val);
248 else if (!strcmp (var, "keepalive"))
249 keepalive = atoi (val);
250 else if (!strcmp (var, "mtu"))
251 mtu = atoi (val);
252 else if (!strcmp (var, "if-up"))
253 script_if_up = strdup (val);
254 else if (!strcmp (var, "node-up"))
255 script_node_up = strdup (val);
256 else if (!strcmp (var, "node-down"))
257 script_node_down = strdup (val);
258
259 /* node-specific, non-defaultable */
260 else if (node != &default_node && !strcmp (var, "hostname"))
261 {
262 free (node->hostname);
263 node->hostname = strdup (val);
264 }
265
266 /* node-specific, defaultable */
267 else if (!strcmp (var, "udp-port"))
268 node->udp_port = atoi (val);
269 else if (!strcmp (var, "router-priority"))
270 node->routerprio = atoi (val);
271 else if (!strcmp (var, "connect"))
272 {
273 if (!strcmp (val, "ondemand"))
274 node->connectmode = conf_node::C_ONDEMAND;
275 else if (!strcmp (val, "never"))
276 node->connectmode = conf_node::C_NEVER;
277 else if (!strcmp (val, "always"))
278 node->connectmode = conf_node::C_ALWAYS;
279 else if (!strcmp (val, "disabled"))
280 node->connectmode = conf_node::C_DISABLED;
281 else
282 slog (L_WARN,
283 _("illegal value for 'connectmode', use one of 'ondemand', 'never', 'always' or 'disabled', at '%s' line %d"),
284 var, fname, lineno);
285 }
286 else if (!strcmp (var, "inherit-tos"))
287 {
288 parse_bool (node->inherit_tos, "inherit-tos", true, false);
289 }
290 else if (!strcmp (var, "compress"))
291 {
292 parse_bool (node->compress, "compress", true, false);
293 }
294 // all these bool options really really cost a lot of executable size!
295 else if (!strcmp (var, "enable-udp"))
296 {
297 u8 v; parse_bool (v, "enable-udp" , PROT_UDPv4, 0); node->protocols = (node->protocols & ~PROT_UDPv4) | v;
298 }
299 else if (!strcmp (var, "enable-rawip"))
300 {
301 u8 v; parse_bool (v, "enable-rawip", PROT_IPv4, 0); node->protocols = (node->protocols & ~PROT_IPv4 ) | v;
302 }
303
304 // unknown or misplaced
305 else
306 {
307 slog (L_WARN,
308 _("unknown or misplaced variable `%s', at '%s' line %d"),
309 var, fname, lineno);
310 }
311 }
312
313 fclose (f);
314 }
315 else
316 {
317 slog (L_ERR, _("unable to read config file '%s': %s"), fname, strerror (errno));
318 exit (1);
319 }
320
321 free (fname);
322
323 fname = config_filename (prikeyfile, "hostkey");
324
325 f = fopen (fname, "r");
326 if (f)
327 {
328 rsa_key = RSA_new ();
329
330 if (!PEM_read_RSAPrivateKey (f, &rsa_key, NULL, NULL))
331 {
332 ERR_load_RSA_strings (); ERR_load_PEM_strings ();
333 slog (L_ERR, _("unable to read private rsa key file '%s': %s"), fname, ERR_error_string (ERR_get_error (), 0));
334 exit (1);
335 }
336
337 RSA_blinding_on (rsa_key, 0);
338
339 fclose (f);
340 }
341 else
342 {
343 slog (need_keys ? L_ERR : L_NOTICE, _("unable to open private rsa key file '%s': %s"), fname, strerror (errno));
344
345 if (need_keys)
346 exit (1);
347 }
348
349 free (fname);
350}
351
352char *configuration::config_filename (const char *name, const char *dflt)
353{
354 char *fname;
355
356 asprintf (&fname, name ? name : dflt, ::thisnode);
357
358 if (!ABSOLUTE_PATH (fname))
359 {
360 char *rname = fname;
361 asprintf (&fname, "%s/%s", confbase, rname);
362 free (rname);
363 }
364
365 return fname; 62 return 0;
366} 63}
367 64
368void 65const char *strprotocol (u8 protocol)
369configuration::print ()
370{ 66{
371 printf (_("\nConfiguration\n\n")); 67 if (protocol & PROT_IPv4 ) return "rawip";
372 printf (_("# of nodes: %d\n"), nodes.size ()); 68 if (protocol & PROT_ICMPv4) return "icmp";
373 printf (_("this node: %s\n"), thisnode ? thisnode->nodename : "<unset>"); 69 if (protocol & PROT_UDPv4 ) return "udp";
374 printf (_("MTU: %d\n"), mtu); 70 if (protocol & PROT_TCPv4 ) return "tcp";
375 printf (_("rekeying interval: %d\n"), rekey); 71 if (protocol & PROT_DNSv4 ) return "dns";
376 printf (_("keepalive interval: %d\n"), keepalive);
377 printf (_("interface: %s\n"), ifname);
378 printf (_("primary rsa key: %s\n"), prikeyfile ? prikeyfile : "<default>");
379 printf (_("rsa key size: %d\n"), rsa_key ? RSA_size (rsa_key) : -1);
380 printf ("\n");
381 72
382 printf ("%4s %-17s %s %-8.8s %-10.10s %s\n", 73 return "<unknown>";
383 _("ID#"), _("MAC"), _("Com"), _("Conmode"), _("Node"), _("Host:Port"));
384
385 for (node_vector::iterator i = nodes.begin (); i != nodes.end (); ++i)
386 (*i)->print ();
387
388 printf ("\n");
389} 74}
390 75
391void 76void
392conf_node::print () 77conf_node::print ()
393{ 78{
… …
403 hostname ? ":" : "", 88 hostname ? ":" : "",
404 hostname ? udp_port : 0 89 hostname ? udp_port : 0
405 ); 90 );
406} 91}
407 92
93conf_node::~conf_node ()
94{
95 if (rsa_key)
96 RSA_free (rsa_key);
97
98 free (nodename);
99 free (hostname);
100#if ENABLE_DNS
101 free (domain);
102 free (dns_hostname);
103#endif
104}
105
106void configuration::init ()
107{
108 memset (this, 0, sizeof (*this));
109
110 mtu = DEFAULT_MTU;
111 rekey = DEFAULT_REKEY;
112 keepalive = DEFAULT_KEEPALIVE;
113 llevel = L_INFO;
114 ip_proto = IPPROTO_GRE;
115#if ENABLE_ICMP
116 icmp_type = ICMP_ECHOREPLY;
117#endif
118
119 default_node.udp_port = DEFAULT_UDPPORT;
120 default_node.tcp_port = DEFAULT_UDPPORT; // ehrm
121 default_node.connectmode = conf_node::C_ALWAYS;
122 default_node.compress = true;
123 default_node.protocols = 0;
124 default_node.max_retry = DEFAULT_MAX_RETRY;
125
126#if ENABLE_DNS
127 default_node.dns_port = 0; // default is 0 == client
128 dns_forw_host = strdup ("127.0.0.1");
129 dns_forw_port = 53;
130#endif
131
132 conf.pidfilename = strdup (LOCALSTATEDIR "/run/gvpe.pid");
133}
134
135void configuration::cleanup()
136{
137 if (rsa_key)
138 RSA_free (rsa_key);
139
140 rsa_key = 0;
141
142 free (pidfilename); pidfilename = 0;
143 free (ifname); ifname = 0;
144#if ENABLE_HTTP_PROXY
145 free (proxy_host); proxy_host = 0;
146 free (proxy_auth); proxy_auth = 0;
147#endif
148#if ENABLE_DNS
149 free (dns_forw_host); dns_forw_host = 0;
150#endif
151}
152
153void
154configuration::clear_config ()
155{
156 for (configuration::node_vector::iterator i = nodes.begin(); i != nodes.end(); ++i)
157 delete *i;
158
159 nodes.clear ();
160
161 cleanup ();
162 init ();
163}
164
165#define parse_bool(target,name,trueval,falseval) \
166 if (!strcmp (val, "yes")) target = trueval; \
167 else if (!strcmp (val, "no")) target = falseval; \
168 else if (!strcmp (val, "true")) target = trueval; \
169 else if (!strcmp (val, "false")) target = falseval; \
170 else if (!strcmp (val, "on")) target = trueval; \
171 else if (!strcmp (val, "off")) target = falseval; \
172 else \
173 slog (L_WARN, \
174 _("illegal value for '%s', only 'yes|true|on' or 'no|false|off' allowed, at '%s' line %d"), \
175 name, var, fname, lineno);
176
177void configuration::read_config (bool need_keys)
178{
179 char *fname;
180 FILE *f;
181
182 clear_config ();
183
184 asprintf (&fname, "%s/gvpe.conf", confbase);
185 f = fopen (fname, "r");
186
187 if (f)
188 {
189 char line[16384];
190 int lineno = 0;
191 char *var, *val;
192 conf_node *node = &default_node;
193
194 while (fgets (line, sizeof (line), f))
195 {
196 lineno++;
197
198 {
199 char *end = line + strlen (line);
200
201 while (*end < ' ' && end >= line)
202 end--;
203
204 *++end = 0;
205 }
206
207 char *tok = line;
208
209retry:
210 var = strtok (tok, "\t =");
211 tok = 0;
212
213 if (!var || !var[0])
214 continue; /* no tokens on this line */
215
216 if (var[0] == '#')
217 continue; /* comment: ignore */
218
219 val = strtok (NULL, "\t\n\r =");
220
221 if (!val || val[0] == '#')
222 {
223 slog (L_WARN,
224 _("no value for variable `%s', at '%s' line %d"),
225 var, fname, lineno);
226 break;
227 }
228
229 if (!strcmp (var, "on"))
230 {
231 if (!::thisnode
232 || (val[0] == '!' && strcmp (val + 1, ::thisnode))
233 || !strcmp (val, ::thisnode))
234 goto retry;
235
236 continue;
237 }
238
239 // truly global
240 if (!strcmp (var, "loglevel"))
241 {
242 loglevel l = string_to_loglevel (val);
243
244 if (l != L_NONE)
245 llevel = l;
246 else
247 slog (L_WARN, "'%s': %s, at '%s' line %d", val, UNKNOWN_LOGLEVEL, fname, line);
248 }
249 else if (!strcmp (var, "ip-proto"))
250 ip_proto = atoi (val);
251 else if (!strcmp (var, "icmp-type"))
252 {
253#if ENABLE_ICMP
254 icmp_type = atoi (val);
255#endif
256 }
257
258 // per config
259 else if (!strcmp (var, "node"))
260 {
261 default_node.id++;
262
263 node = new conf_node (default_node);
264
265 nodes.push_back (node);
266
267 node->nodename = strdup (val);
268
269 {
270 char *fname;
271 FILE *f;
272
273 asprintf (&fname, "%s/pubkey/%s", confbase, node->nodename);
274
275 f = fopen (fname, "r");
276 if (f)
277 {
278 node->rsa_key = RSA_new ();
279
280 if (!PEM_read_RSAPublicKey(f, &node->rsa_key, NULL, NULL))
281 {
282 ERR_load_RSA_strings (); ERR_load_PEM_strings ();
283 slog (L_ERR, _("unable to open public rsa key file '%s': %s"), fname, ERR_error_string (ERR_get_error (), 0));
284 exit (EXIT_FAILURE);
285 }
286
287 require (RSA_blinding_on (node->rsa_key, 0));
288
289 fclose (f);
290 }
291 else
292 {
293 slog (need_keys ? L_ERR : L_NOTICE, _("unable to read public rsa key file '%s': %s"), fname, strerror (errno));
294
295 if (need_keys)
296 exit (EXIT_FAILURE);
297 }
298
299 free (fname);
300 }
301
302 if (::thisnode && !strcmp (node->nodename, ::thisnode))
303 thisnode = node;
304 }
305 else if (!strcmp (var, "private-key"))
306 free (prikeyfile), prikeyfile = strdup (val);
307 else if (!strcmp (var, "ifpersist"))
308 {
309 parse_bool (ifpersist, "ifpersist", true, false);
310 }
311 else if (!strcmp (var, "ifname"))
312 free (ifname), ifname = strdup (val);
313 else if (!strcmp (var, "rekey"))
314 rekey = atoi (val);
315 else if (!strcmp (var, "keepalive"))
316 keepalive = atoi (val);
317 else if (!strcmp (var, "mtu"))
318 mtu = atoi (val);
319 else if (!strcmp (var, "if-up"))
320 free (script_if_up), script_if_up = strdup (val);
321 else if (!strcmp (var, "node-up"))
322 free (script_node_up), script_node_up = strdup (val);
323 else if (!strcmp (var, "node-down"))
324 free (script_node_down), script_node_down = strdup (val);
325 else if (!strcmp (var, "pid-file"))
326 free (pidfilename), pidfilename = strdup (val);
327 else if (!strcmp (var, "dns-forw-host"))
328 {
329#if ENABLE_DNS
330 free (dns_forw_host), dns_forw_host = strdup (val);
331#endif
332 }
333 else if (!strcmp (var, "dns-forw-port"))
334 {
335#if ENABLE_DNS
336 dns_forw_port = atoi (val);
337#endif
338 }
339 else if (!strcmp (var, "http-proxy-host"))
340 {
341#if ENABLE_HTTP_PROXY
342 free (proxy_host), proxy_host = strdup (val);
343#endif
344 }
345 else if (!strcmp (var, "http-proxy-port"))
346 {
347#if ENABLE_HTTP_PROXY
348 proxy_port = atoi (val);
349#endif
350 }
351 else if (!strcmp (var, "http-proxy-auth"))
352 {
353#if ENABLE_HTTP_PROXY
354 proxy_auth = (char *)base64_encode ((const u8 *)val, strlen (val));
355#endif
356 }
357
358 /* node-specific, non-defaultable */
359 else if (node != &default_node && !strcmp (var, "hostname"))
360 free (node->hostname), node->hostname = strdup (val);
361
362 /* node-specific, defaultable */
363 else if (!strcmp (var, "udp-port"))
364 node->udp_port = atoi (val);
365 else if (!strcmp (var, "tcp-port"))
366 node->tcp_port = atoi (val);
367 else if (!strcmp (var, "dns-hostname"))
368 {
369#if ENABLE_DNS
370 free (node->dns_hostname), node->dns_hostname = strdup (val);
371#endif
372 }
373 else if (!strcmp (var, "dns-port"))
374 {
375#if ENABLE_DNS
376 node->dns_port = atoi (val);
377#endif
378 }
379 else if (!strcmp (var, "dns-domain"))
380 {
381#if ENABLE_DNS
382 free (node->domain), node->domain = strdup (val);
383#endif
384 }
385 else if (!strcmp (var, "router-priority"))
386 node->routerprio = atoi (val);
387 else if (!strcmp (var, "max-retry"))
388 node->max_retry = atoi (val);
389 else if (!strcmp (var, "connect"))
390 {
391 if (!strcmp (val, "ondemand"))
392 node->connectmode = conf_node::C_ONDEMAND;
393 else if (!strcmp (val, "never"))
394 node->connectmode = conf_node::C_NEVER;
395 else if (!strcmp (val, "always"))
396 node->connectmode = conf_node::C_ALWAYS;
397 else if (!strcmp (val, "disabled"))
398 node->connectmode = conf_node::C_DISABLED;
399 else
400 slog (L_WARN,
401 _("illegal value for 'connectmode', use one of 'ondemand', 'never', 'always' or 'disabled', at '%s' line %d"),
402 var, fname, lineno);
403 }
404 else if (!strcmp (var, "inherit-tos"))
405 {
406 parse_bool (node->inherit_tos, "inherit-tos", true, false);
407 }
408 else if (!strcmp (var, "compress"))
409 {
410 parse_bool (node->compress, "compress", true, false);
411 }
412 // all these bool options really really cost a lot of executable size!
413 else if (!strcmp (var, "enable-tcp"))
414 {
415#if ENABLE_TCP
416 u8 v; parse_bool (v, "enable-tcp" , PROT_TCPv4, 0); node->protocols = (node->protocols & ~PROT_TCPv4) | v;
417#endif
418 }
419 else if (!strcmp (var, "enable-icmp"))
420 {
421#if ENABLE_ICMP
422 u8 v; parse_bool (v, "enable-icmp" , PROT_ICMPv4, 0); node->protocols = (node->protocols & ~PROT_ICMPv4) | v;
423#endif
424 }
425 else if (!strcmp (var, "enable-dns"))
426 {
427#if ENABLE_DNS
428 u8 v; parse_bool (v, "enable-dns" , PROT_DNSv4, 0); node->protocols = (node->protocols & ~PROT_DNSv4) | v;
429#endif
430 }
431 else if (!strcmp (var, "enable-udp"))
432 {
433 u8 v; parse_bool (v, "enable-udp" , PROT_UDPv4, 0); node->protocols = (node->protocols & ~PROT_UDPv4) | v;
434 }
435 else if (!strcmp (var, "enable-rawip"))
436 {
437 u8 v; parse_bool (v, "enable-rawip", PROT_IPv4, 0); node->protocols = (node->protocols & ~PROT_IPv4 ) | v;
438 }
439
440 // unknown or misplaced
441 else
442 slog (L_WARN,
443 _("unknown or misplaced variable `%s', at '%s' line %d"),
444 var, fname, lineno);
445 }
446
447 fclose (f);
448 }
449 else
450 {
451 slog (L_ERR, _("unable to read config file '%s': %s"), fname, strerror (errno));
452 exit (EXIT_FAILURE);
453 }
454
455 free (fname);
456
457 fname = config_filename (prikeyfile, "hostkey");
458
459 f = fopen (fname, "r");
460 if (f)
461 {
462 rsa_key = RSA_new ();
463
464 if (!PEM_read_RSAPrivateKey (f, &rsa_key, NULL, NULL))
465 {
466 ERR_load_RSA_strings (); ERR_load_PEM_strings ();
467 slog (L_ERR, _("unable to read private rsa key file '%s': %s"), fname, ERR_error_string (ERR_get_error (), 0));
468 exit (EXIT_FAILURE);
469 }
470
471 require (RSA_blinding_on (rsa_key, 0));
472
473 fclose (f);
474 }
475 else
476 {
477 slog (need_keys ? L_ERR : L_NOTICE, _("unable to open private rsa key file '%s': %s"), fname, strerror (errno));
478
479 if (need_keys)
480 exit (EXIT_FAILURE);
481 }
482
483 if (need_keys && ::thisnode
484 && rsa_key && thisnode && thisnode->rsa_key)
485 if (BN_cmp (rsa_key->n, thisnode->rsa_key->n) != 0
486 || BN_cmp (rsa_key->e, thisnode->rsa_key->e) != 0)
487 {
488 slog (L_NOTICE, _("private hostkey and public node key mismatch: is '%s' the correct node?"), ::thisnode);
489 exit (EXIT_FAILURE);
490 }
491
492 free (fname);
493}
494
495char *configuration::config_filename (const char *name, const char *dflt)
496{
497 char *fname;
498
499 asprintf (&fname, name ? name : dflt, ::thisnode);
500
501 if (!ABSOLUTE_PATH (fname))
502 {
503 char *rname = fname;
504 asprintf (&fname, "%s/%s", confbase, rname);
505 free (rname);
506 }
507
508 return fname;
509}
510
511void
512configuration::print ()
513{
514 printf (_("\nConfiguration\n\n"));
515 printf (_("# of nodes: %d\n"), nodes.size ());
516 printf (_("this node: %s\n"), thisnode ? thisnode->nodename : "<unset>");
517 printf (_("MTU: %d\n"), mtu);
518 printf (_("rekeying interval: %d\n"), rekey);
519 printf (_("keepalive interval: %d\n"), keepalive);
520 printf (_("interface: %s\n"), ifname);
521 printf (_("primary rsa key: %s\n"), prikeyfile ? prikeyfile : "<default>");
522 printf (_("rsa key size: %d\n"), rsa_key ? RSA_size (rsa_key) * 8 : -1);
523 printf ("\n");
524
525 printf ("%4s %-17s %s %-8.8s %-10.10s %s\n",
526 _("ID#"), _("MAC"), _("Com"), _("Conmode"), _("Node"), _("Host:Port"));
527
528 for (node_vector::iterator i = nodes.begin (); i != nodes.end (); ++i)
529 (*i)->print ();
530
531 printf ("\n");
532}
533
534configuration::configuration ()
535{
536 asprintf (&confbase, "%s/gvpe", CONFDIR);
537
538 init ();
539}
540
541configuration::~configuration ()
542{
543 cleanup ();
544}
545
546

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