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Comparing gvpe/src/conf.C (file contents):
Revision 1.9 by pcg, Wed Apr 2 05:14:59 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
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
56u8 best_protocol (u8 protset) 54u8 best_protocol (u8 protset)
57{ 55{
58 if (protset & PROT_IPv4 ) return PROT_IPv4; 56 if (protset & PROT_IPv4 ) return PROT_IPv4;
57 if (protset & PROT_ICMPv4) return PROT_ICMPv4;
59 if (protset & PROT_UDPv4) return PROT_UDPv4; 58 if (protset & PROT_UDPv4 ) return PROT_UDPv4;
60 if (protset & PROT_TCPv4) return PROT_TCPv4; 59 if (protset & PROT_TCPv4 ) return PROT_TCPv4;
60 if (protset & PROT_DNSv4 ) return PROT_DNSv4;
61 61
62 return 0; 62 return 0;
63} 63}
64 64
65const char *strprotocol (u8 protocol) 65const char *strprotocol (u8 protocol)
66{ 66{
67 if (protocol & PROT_IPv4 ) return "rawip"; 67 if (protocol & PROT_IPv4 ) return "rawip";
68 if (protocol & PROT_ICMPv4) return "icmp";
68 if (protocol & PROT_UDPv4) return "udp"; 69 if (protocol & PROT_UDPv4 ) return "udp";
70 if (protocol & PROT_TCPv4 ) return "tcp";
71 if (protocol & PROT_DNSv4 ) return "dns";
69 72
70 return "<unknown>"; 73 return "<unknown>";
71}
72
73configuration::configuration ()
74{
75 init ();
76}
77
78configuration::~configuration ()
79{
80 cleanup ();
81}
82
83void configuration::init ()
84{
85 memset (this, 0, sizeof (*this));
86
87 rekey = DEFAULT_REKEY;
88 keepalive = DEFAULT_KEEPALIVE;
89 llevel = L_INFO;
90 ip_proto = IPPROTO_GRE;
91
92 default_node.udp_port = DEFAULT_UDPPORT;
93 default_node.tcp_port = DEFAULT_UDPPORT;
94 default_node.connectmode = conf_node::C_ALWAYS;
95 default_node.compress = true;
96 default_node.protocols = PROT_UDPv4;
97}
98
99void configuration::cleanup()
100{
101 if (rsa_key)
102 RSA_free (rsa_key);
103
104 free (ifname);
105
106 rsa_key = 0;
107 ifname = 0;
108}
109
110void
111configuration::clear_config ()
112{
113 for (configuration::node_vector::iterator i = nodes.begin(); i != nodes.end(); ++i)
114 delete *i;
115
116 nodes.clear ();
117
118 cleanup ();
119 init ();
120}
121
122#define parse_bool(target,name,trueval,falseval) \
123 if (!strcmp (val, "yes")) target = trueval; \
124 else if (!strcmp (val, "no")) target = falseval; \
125 else if (!strcmp (val, "true")) target = trueval; \
126 else if (!strcmp (val, "false")) target = falseval; \
127 else if (!strcmp (val, "on")) target = trueval; \
128 else if (!strcmp (val, "off")) target = falseval; \
129 else \
130 slog (L_WARN, \
131 _("illegal value for '%s', only 'yes|true|on' or 'no|false|off' allowed, at '%s' line %d"), \
132 name, var, fname, lineno);
133
134void configuration::read_config (bool need_keys)
135{
136 char *fname;
137 FILE *f;
138
139 clear_config ();
140
141 asprintf (&fname, "%s/vped.conf", confbase);
142 f = fopen (fname, "r");
143
144 if (f)
145 {
146 char line[16384];
147 int lineno = 0;
148 char *var, *val;
149 conf_node *node = &default_node;
150
151 while (fgets (line, sizeof (line), f))
152 {
153 lineno++;
154
155 {
156 char *end = line + strlen (line);
157
158 while (*end < ' ' && end >= line)
159 end--;
160
161 *++end = 0;
162 }
163
164 char *tok = line;
165
166retry:
167 var = strtok (tok, "\t =");
168 tok = 0;
169
170 if (!var || !var[0])
171 continue; /* no tokens on this line */
172
173 if (var[0] == '#')
174 continue; /* comment: ignore */
175
176 val = strtok (NULL, "\t\n\r =");
177
178 if (!val || val[0] == '#')
179 {
180 slog (L_WARN,
181 _("no value for variable `%s', at '%s' line %d"),
182 var, fname, lineno);
183 break;
184 }
185
186 if (!strcmp (var, "on"))
187 {
188 if (!::thisnode
189 || (val[0] == '!' && strcmp (val + 1, ::thisnode))
190 || !strcmp (val, ::thisnode))
191 goto retry;
192
193 continue;
194 }
195
196 // truly global
197 if (!strcmp (var, "loglevel"))
198 {
199 loglevel l = string_to_loglevel (val);
200
201 if (l != L_NONE)
202 llevel = l;
203 else
204 slog (L_WARN, "'%s': %s, at '%s' line %d", val, UNKNOWN_LOGLEVEL, fname, line);
205 }
206 else if (!strcmp (var, "ip-proto"))
207 ip_proto = atoi (val);
208
209 // per config
210 else if (!strcmp (var, "node"))
211 {
212 default_node.id++;
213
214 node = new conf_node (default_node);
215
216 nodes.push_back (node);
217
218 node->nodename = strdup (val);
219
220 {
221 char *fname;
222 FILE *f;
223
224 asprintf (&fname, "%s/pubkey/%s", confbase, node->nodename);
225
226 f = fopen (fname, "r");
227 if (f)
228 {
229 node->rsa_key = RSA_new ();
230
231 if (!PEM_read_RSAPublicKey(f, &node->rsa_key, NULL, NULL))
232 {
233 ERR_load_RSA_strings (); ERR_load_PEM_strings ();
234 slog (L_ERR, _("unable to open public rsa key file '%s': %s"), fname, ERR_error_string (ERR_get_error (), 0));
235 exit (1);
236 }
237
238 RSA_blinding_on (node->rsa_key, 0);
239
240 fclose (f);
241 }
242 else
243 {
244 slog (need_keys ? L_ERR : L_NOTICE, _("unable to read public rsa key file '%s': %s"), fname, strerror (errno));
245
246 if (need_keys)
247 exit (1);
248 }
249
250 free (fname);
251 }
252
253 if (!::thisnode || !strcmp (node->nodename, ::thisnode))
254 thisnode = node;
255 }
256 else if (!strcmp (var, "private-key"))
257 prikeyfile = strdup (val);
258 else if (!strcmp (var, "ifpersist"))
259 {
260 parse_bool (ifpersist, "ifpersist", true, false);
261 }
262 else if (!strcmp (var, "ifname"))
263 ifname = strdup (val);
264 else if (!strcmp (var, "rekey"))
265 rekey = atoi (val);
266 else if (!strcmp (var, "keepalive"))
267 keepalive = atoi (val);
268 else if (!strcmp (var, "mtu"))
269 mtu = atoi (val);
270 else if (!strcmp (var, "if-up"))
271 script_if_up = strdup (val);
272 else if (!strcmp (var, "node-up"))
273 script_node_up = strdup (val);
274 else if (!strcmp (var, "node-down"))
275 script_node_down = strdup (val);
276
277 /* node-specific, non-defaultable */
278 else if (node != &default_node && !strcmp (var, "hostname"))
279 {
280 free (node->hostname);
281 node->hostname = strdup (val);
282 }
283
284 /* node-specific, defaultable */
285 else if (!strcmp (var, "udp-port"))
286 node->udp_port = atoi (val);
287 else if (!strcmp (var, "tcp-port"))
288 node->tcp_port = atoi (val);
289 else if (!strcmp (var, "router-priority"))
290 node->routerprio = atoi (val);
291 else if (!strcmp (var, "connect"))
292 {
293 if (!strcmp (val, "ondemand"))
294 node->connectmode = conf_node::C_ONDEMAND;
295 else if (!strcmp (val, "never"))
296 node->connectmode = conf_node::C_NEVER;
297 else if (!strcmp (val, "always"))
298 node->connectmode = conf_node::C_ALWAYS;
299 else if (!strcmp (val, "disabled"))
300 node->connectmode = conf_node::C_DISABLED;
301 else
302 slog (L_WARN,
303 _("illegal value for 'connectmode', use one of 'ondemand', 'never', 'always' or 'disabled', at '%s' line %d"),
304 var, fname, lineno);
305 }
306 else if (!strcmp (var, "inherit-tos"))
307 {
308 parse_bool (node->inherit_tos, "inherit-tos", true, false);
309 }
310 else if (!strcmp (var, "compress"))
311 {
312 parse_bool (node->compress, "compress", true, false);
313 }
314 // all these bool options really really cost a lot of executable size!
315 else if (!strcmp (var, "enable-tcp"))
316 {
317 u8 v; parse_bool (v, "enable-tcp" , PROT_TCPv4, 0); node->protocols = (node->protocols & ~PROT_TCPv4) | v;
318 }
319 else if (!strcmp (var, "enable-udp"))
320 {
321 u8 v; parse_bool (v, "enable-udp" , PROT_UDPv4, 0); node->protocols = (node->protocols & ~PROT_UDPv4) | v;
322 }
323 else if (!strcmp (var, "enable-rawip"))
324 {
325 u8 v; parse_bool (v, "enable-rawip", PROT_IPv4, 0); node->protocols = (node->protocols & ~PROT_IPv4 ) | v;
326 }
327
328 // unknown or misplaced
329 else
330 {
331 slog (L_WARN,
332 _("unknown or misplaced variable `%s', at '%s' line %d"),
333 var, fname, lineno);
334 }
335 }
336
337 fclose (f);
338 }
339 else
340 {
341 slog (L_ERR, _("unable to read config file '%s': %s"), fname, strerror (errno));
342 exit (1);
343 }
344
345 free (fname);
346
347 fname = config_filename (prikeyfile, "hostkey");
348
349 f = fopen (fname, "r");
350 if (f)
351 {
352 rsa_key = RSA_new ();
353
354 if (!PEM_read_RSAPrivateKey (f, &rsa_key, NULL, NULL))
355 {
356 ERR_load_RSA_strings (); ERR_load_PEM_strings ();
357 slog (L_ERR, _("unable to read private rsa key file '%s': %s"), fname, ERR_error_string (ERR_get_error (), 0));
358 exit (1);
359 }
360
361 RSA_blinding_on (rsa_key, 0);
362
363 fclose (f);
364 }
365 else
366 {
367 slog (need_keys ? L_ERR : L_NOTICE, _("unable to open private rsa key file '%s': %s"), fname, strerror (errno));
368
369 if (need_keys)
370 exit (1);
371 }
372
373 free (fname);
374}
375
376char *configuration::config_filename (const char *name, const char *dflt)
377{
378 char *fname;
379
380 asprintf (&fname, name ? name : dflt, ::thisnode);
381
382 if (!ABSOLUTE_PATH (fname))
383 {
384 char *rname = fname;
385 asprintf (&fname, "%s/%s", confbase, rname);
386 free (rname);
387 }
388
389 return fname;
390}
391
392void
393configuration::print ()
394{
395 printf (_("\nConfiguration\n\n"));
396 printf (_("# of nodes: %d\n"), nodes.size ());
397 printf (_("this node: %s\n"), thisnode ? thisnode->nodename : "<unset>");
398 printf (_("MTU: %d\n"), mtu);
399 printf (_("rekeying interval: %d\n"), rekey);
400 printf (_("keepalive interval: %d\n"), keepalive);
401 printf (_("interface: %s\n"), ifname);
402 printf (_("primary rsa key: %s\n"), prikeyfile ? prikeyfile : "<default>");
403 printf (_("rsa key size: %d\n"), rsa_key ? RSA_size (rsa_key) : -1);
404 printf ("\n");
405
406 printf ("%4s %-17s %s %-8.8s %-10.10s %s\n",
407 _("ID#"), _("MAC"), _("Com"), _("Conmode"), _("Node"), _("Host:Port"));
408
409 for (node_vector::iterator i = nodes.begin (); i != nodes.end (); ++i)
410 (*i)->print ();
411
412 printf ("\n");
413} 74}
414 75
415void 76void
416conf_node::print () 77conf_node::print ()
417{ 78{
… …
427 hostname ? ":" : "", 88 hostname ? ":" : "",
428 hostname ? udp_port : 0 89 hostname ? udp_port : 0
429 ); 90 );
430} 91}
431 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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