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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 1.31 by pcg, Thu Mar 3 16:54:34 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 = 53;
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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