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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 1.39 by pcg, Sat Mar 26 03:16:24 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>
42 40#include <openssl/bn.h>
43#include "gettext.h"
44 41
45#include "conf.h" 42#include "conf.h"
46#include "slog.h" 43#include "slog.h"
47#include "util.h" 44#include "util.h"
48 45
49char *confbase; 46char *confbase;
50char *thisnode; 47char *thisnode;
51char *identname; 48char *identname;
52char *pidfilename;
53 49
54struct configuration conf; 50struct configuration conf;
55 51
56configuration::configuration () 52u8 best_protocol (u8 protset)
57{ 53{
58 init (); 54 if (protset & PROT_IPv4 ) return PROT_IPv4;
59} 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;
60 59
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; 60 return 0;
366} 61}
367 62
368void 63const char *strprotocol (u8 protocol)
369configuration::print ()
370{ 64{
371 printf (_("\nConfiguration\n\n")); 65 if (protocol & PROT_IPv4 ) return "rawip";
372 printf (_("# of nodes: %d\n"), nodes.size ()); 66 if (protocol & PROT_ICMPv4) return "icmp";
373 printf (_("this node: %s\n"), thisnode ? thisnode->nodename : "<unset>"); 67 if (protocol & PROT_UDPv4 ) return "udp";
374 printf (_("MTU: %d\n"), mtu); 68 if (protocol & PROT_TCPv4 ) return "tcp";
375 printf (_("rekeying interval: %d\n"), rekey); 69 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 70
382 printf ("%4s %-17s %s %-8.8s %-10.10s %s\n", 71 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} 72}
390 73
391void 74void
392conf_node::print () 75conf_node::print ()
393{ 76{
… …
403 hostname ? ":" : "", 86 hostname ? ":" : "",
404 hostname ? udp_port : 0 87 hostname ? udp_port : 0
405 ); 88 );
406} 89}
407 90
91conf_node::~conf_node ()
92{
93#if 0
94 // does not work, because string pointers etc. are shared
95 // is not called, however
96 if (rsa_key)
97 RSA_free (rsa_key);
98
99 free (nodename);
100 free (hostname);
101 free (if_up_data);
102#if ENABLE_DNS
103 free (domain);
104 free (dns_hostname);
105#endif
106#endif
107}
108
109void configuration::init ()
110{
111 memset (this, 0, sizeof (*this));
112
113 mtu = DEFAULT_MTU;
114 rekey = DEFAULT_REKEY;
115 keepalive = DEFAULT_KEEPALIVE;
116 llevel = L_INFO;
117 ip_proto = IPPROTO_GRE;
118#if ENABLE_ICMP
119 icmp_type = ICMP_ECHOREPLY;
120#endif
121
122 default_node.udp_port = DEFAULT_UDPPORT;
123 default_node.tcp_port = DEFAULT_UDPPORT; // ehrm
124 default_node.connectmode = conf_node::C_ALWAYS;
125 default_node.compress = true;
126 default_node.protocols = 0;
127 default_node.max_retry = DEFAULT_MAX_RETRY;
128 default_node.if_up_data = strdup ("");
129
130#if ENABLE_DNS
131 default_node.dns_port = 0; // default is 0 == client
132
133 dns_forw_host = strdup ("127.0.0.1");
134 dns_forw_port = 53;
135 dns_timeout_factor = DEFAULT_DNS_TIMEOUT_FACTOR;
136 dns_send_interval = DEFAULT_DNS_SEND_INTERVAL;
137 dns_overlap_factor = DEFAULT_DNS_OVERLAP_FACTOR;
138 dns_max_outstanding = DEFAULT_DNS_MAX_OUTSTANDING;
139#endif
140
141 conf.pidfilename = strdup (LOCALSTATEDIR "/run/gvpe.pid");
142}
143
144void configuration::cleanup()
145{
146 if (rsa_key)
147 RSA_free (rsa_key);
148
149 rsa_key = 0;
150
151 free (pidfilename); pidfilename = 0;
152 free (ifname); ifname = 0;
153#if ENABLE_HTTP_PROXY
154 free (proxy_host); proxy_host = 0;
155 free (proxy_auth); proxy_auth = 0;
156#endif
157#if ENABLE_DNS
158 free (dns_forw_host); dns_forw_host = 0;
159#endif
160}
161
162void
163configuration::clear_config ()
164{
165 for (configuration::node_vector::iterator i = nodes.begin(); i != nodes.end(); ++i)
166 delete *i;
167
168 nodes.clear ();
169
170 cleanup ();
171 init ();
172}
173
174#define parse_bool(target,name,trueval,falseval) do { \
175 if (!strcmp (val, "yes")) target = trueval; \
176 else if (!strcmp (val, "no")) target = falseval; \
177 else if (!strcmp (val, "true")) target = trueval; \
178 else if (!strcmp (val, "false")) target = falseval; \
179 else if (!strcmp (val, "on")) target = trueval; \
180 else if (!strcmp (val, "off")) target = falseval; \
181 else \
182 slog (L_WARN, \
183 _("illegal value for '%s', only 'yes|true|on' or 'no|false|off' allowed, at '%s' line %d"), \
184 name, var, fname, lineno); \
185} while (0)
186
187void configuration::read_config (bool need_keys)
188{
189 char *fname;
190 FILE *f;
191
192 clear_config ();
193
194 asprintf (&fname, "%s/gvpe.conf", confbase);
195 f = fopen (fname, "r");
196
197 if (f)
198 {
199 char line[16384];
200 int lineno = 0;
201 char *var, *val;
202 conf_node *node = &default_node;
203
204 while (fgets (line, sizeof (line), f))
205 {
206 lineno++;
207
208 {
209 char *end = line + strlen (line);
210
211 while (*end < ' ' && end >= line)
212 end--;
213
214 *++end = 0;
215 }
216
217 char *tok = line;
218
219retry:
220 var = strtok (tok, "\t =");
221 tok = 0;
222
223 if (!var || !var[0])
224 continue; /* no tokens on this line */
225
226 if (var[0] == '#')
227 continue; /* comment: ignore */
228
229 val = strtok (NULL, "\t\n\r =");
230
231 if (!val || val[0] == '#')
232 {
233 slog (L_WARN,
234 _("no value for variable `%s', at '%s' line %d, skipping."),
235 var, fname, lineno);
236 continue;
237 }
238
239 if (!strcmp (var, "on"))
240 {
241 if (!::thisnode
242 || (val[0] == '!' && strcmp (val + 1, ::thisnode))
243 || !strcmp (val, ::thisnode))
244 goto retry;
245
246 continue;
247 }
248
249 // truly global
250 if (!strcmp (var, "loglevel"))
251 {
252 loglevel l = string_to_loglevel (val);
253
254 if (l != L_NONE)
255 llevel = l;
256 else
257 slog (L_WARN, "'%s': %s, at '%s' line %d", val, UNKNOWN_LOGLEVEL, fname, line);
258 }
259 else if (!strcmp (var, "ip-proto"))
260 ip_proto = atoi (val);
261 else if (!strcmp (var, "icmp-type"))
262 {
263#if ENABLE_ICMP
264 icmp_type = atoi (val);
265#endif
266 }
267
268 // per config
269 else if (!strcmp (var, "node"))
270 {
271 default_node.id++;
272
273 node = new conf_node (default_node);
274
275 nodes.push_back (node);
276
277 node->nodename = strdup (val);
278
279 {
280 char *fname;
281 FILE *f;
282
283 asprintf (&fname, "%s/pubkey/%s", confbase, node->nodename);
284
285 f = fopen (fname, "r");
286 if (f)
287 {
288 node->rsa_key = RSA_new ();
289
290 if (!PEM_read_RSAPublicKey(f, &node->rsa_key, NULL, NULL))
291 {
292 ERR_load_RSA_strings (); ERR_load_PEM_strings ();
293 slog (L_ERR, _("unable to open public rsa key file '%s': %s"), fname, ERR_error_string (ERR_get_error (), 0));
294 exit (EXIT_FAILURE);
295 }
296
297 require (RSA_blinding_on (node->rsa_key, 0));
298
299 fclose (f);
300 }
301 else
302 {
303 slog (need_keys ? L_ERR : L_NOTICE, _("unable to read public rsa key file '%s': %s"), fname, strerror (errno));
304
305 if (need_keys)
306 exit (EXIT_FAILURE);
307 }
308
309 free (fname);
310 }
311
312 if (::thisnode && !strcmp (node->nodename, ::thisnode))
313 thisnode = node;
314 }
315 else if (!strcmp (var, "private-key"))
316 free (prikeyfile), prikeyfile = strdup (val);
317 else if (!strcmp (var, "ifpersist"))
318 parse_bool (ifpersist, "ifpersist", true, false);
319 else if (!strcmp (var, "ifname"))
320 free (ifname), ifname = strdup (val);
321 else if (!strcmp (var, "rekey"))
322 rekey = atoi (val);
323 else if (!strcmp (var, "keepalive"))
324 keepalive = atoi (val);
325 else if (!strcmp (var, "mtu"))
326 mtu = atoi (val);
327 else if (!strcmp (var, "if-up"))
328 free (script_if_up), script_if_up = strdup (val);
329 else if (!strcmp (var, "node-up"))
330 free (script_node_up), script_node_up = strdup (val);
331 else if (!strcmp (var, "node-down"))
332 free (script_node_down), script_node_down = strdup (val);
333 else if (!strcmp (var, "pid-file"))
334 free (pidfilename), pidfilename = strdup (val);
335 else if (!strcmp (var, "dns-forw-host"))
336 {
337#if ENABLE_DNS
338 free (dns_forw_host), dns_forw_host = strdup (val);
339#endif
340 }
341 else if (!strcmp (var, "dns-forw-port"))
342 {
343#if ENABLE_DNS
344 dns_forw_port = atoi (val);
345#endif
346 }
347 else if (!strcmp (var, "dns-timeout-factor"))
348 {
349#if ENABLE_DNS
350 dns_timeout_factor = atof (val);
351#endif
352 }
353 else if (!strcmp (var, "dns-send-interval"))
354 {
355#if ENABLE_DNS
356 dns_send_interval = atoi (val);
357#endif
358 }
359 else if (!strcmp (var, "dns-overlap-factor"))
360 {
361#if ENABLE_DNS
362 dns_overlap_factor = atof (val);
363#endif
364 }
365 else if (!strcmp (var, "dns-max-outstanding"))
366 {
367#if ENABLE_DNS
368 dns_max_outstanding = atoi (val);
369#endif
370 }
371 else if (!strcmp (var, "http-proxy-host"))
372 {
373#if ENABLE_HTTP_PROXY
374 free (proxy_host), proxy_host = strdup (val);
375#endif
376 }
377 else if (!strcmp (var, "http-proxy-port"))
378 {
379#if ENABLE_HTTP_PROXY
380 proxy_port = atoi (val);
381#endif
382 }
383 else if (!strcmp (var, "http-proxy-auth"))
384 {
385#if ENABLE_HTTP_PROXY
386 proxy_auth = (char *)base64_encode ((const u8 *)val, strlen (val));
387#endif
388 }
389
390 /* node-specific, non-defaultable */
391 else if (node != &default_node && !strcmp (var, "hostname"))
392 free (node->hostname), node->hostname = strdup (val);
393
394 /* node-specific, defaultable */
395 else if (!strcmp (var, "udp-port"))
396 node->udp_port = atoi (val);
397 else if (!strcmp (var, "tcp-port"))
398 node->tcp_port = atoi (val);
399 else if (!strcmp (var, "dns-hostname"))
400 {
401#if ENABLE_DNS
402 free (node->dns_hostname), node->dns_hostname = strdup (val);
403#endif
404 }
405 else if (!strcmp (var, "dns-port"))
406 {
407#if ENABLE_DNS
408 node->dns_port = atoi (val);
409#endif
410 }
411 else if (!strcmp (var, "dns-domain"))
412 {
413#if ENABLE_DNS
414 free (node->domain), node->domain = strdup (val);
415#endif
416 }
417 else if (!strcmp (var, "if-up-data"))
418 free (node->if_up_data), node->if_up_data = strdup (val);
419 else if (!strcmp (var, "router-priority"))
420 node->routerprio = atoi (val);
421 else if (!strcmp (var, "max-retry"))
422 node->max_retry = atoi (val);
423 else if (!strcmp (var, "connect"))
424 {
425 if (!strcmp (val, "ondemand"))
426 node->connectmode = conf_node::C_ONDEMAND;
427 else if (!strcmp (val, "never"))
428 node->connectmode = conf_node::C_NEVER;
429 else if (!strcmp (val, "always"))
430 node->connectmode = conf_node::C_ALWAYS;
431 else if (!strcmp (val, "disabled"))
432 node->connectmode = conf_node::C_DISABLED;
433 else
434 slog (L_WARN,
435 _("illegal value for 'connectmode', use one of 'ondemand', 'never', 'always' or 'disabled', at '%s' line %d, ignoring."),
436 var, fname, lineno);
437 }
438 else if (!strcmp (var, "inherit-tos"))
439 parse_bool (node->inherit_tos, "inherit-tos", true, false);
440 else if (!strcmp (var, "compress"))
441 parse_bool (node->compress, "compress", true, false);
442 // all these bool options really really cost a lot of executable size!
443 else if (!strcmp (var, "enable-tcp"))
444 {
445#if ENABLE_TCP
446 u8 v; parse_bool (v, "enable-tcp" , PROT_TCPv4, 0); node->protocols = (node->protocols & ~PROT_TCPv4) | v;
447#endif
448 }
449 else if (!strcmp (var, "enable-icmp"))
450 {
451#if ENABLE_ICMP
452 u8 v; parse_bool (v, "enable-icmp" , PROT_ICMPv4, 0); node->protocols = (node->protocols & ~PROT_ICMPv4) | v;
453#endif
454 }
455 else if (!strcmp (var, "enable-dns"))
456 {
457#if ENABLE_DNS
458 u8 v; parse_bool (v, "enable-dns" , PROT_DNSv4, 0); node->protocols = (node->protocols & ~PROT_DNSv4) | v;
459#endif
460 }
461 else if (!strcmp (var, "enable-udp"))
462 {
463 u8 v; parse_bool (v, "enable-udp" , PROT_UDPv4, 0); node->protocols = (node->protocols & ~PROT_UDPv4) | v;
464 }
465 else if (!strcmp (var, "enable-rawip"))
466 {
467 u8 v; parse_bool (v, "enable-rawip", PROT_IPv4, 0); node->protocols = (node->protocols & ~PROT_IPv4 ) | v;
468 }
469
470 // unknown or misplaced
471 else
472 slog (L_WARN,
473 _("unknown or misplaced variable `%s', at '%s' line %d, skipping."),
474 var, fname, lineno);
475 }
476
477 fclose (f);
478 }
479 else
480 {
481 slog (L_ERR, _("unable to read config file '%s': %s"), fname, strerror (errno));
482 exit (EXIT_FAILURE);
483 }
484
485 free (fname);
486
487 fname = config_filename (prikeyfile, "hostkey");
488
489 f = fopen (fname, "r");
490 if (f)
491 {
492 rsa_key = RSA_new ();
493
494 if (!PEM_read_RSAPrivateKey (f, &rsa_key, NULL, NULL))
495 {
496 ERR_load_RSA_strings (); ERR_load_PEM_strings ();
497 slog (L_ERR, _("unable to read private rsa key file '%s': %s"), fname, ERR_error_string (ERR_get_error (), 0));
498 exit (EXIT_FAILURE);
499 }
500
501 require (RSA_blinding_on (rsa_key, 0));
502
503 fclose (f);
504 }
505 else
506 {
507 slog (need_keys ? L_ERR : L_NOTICE, _("unable to open private rsa key file '%s': %s"), fname, strerror (errno));
508
509 if (need_keys)
510 exit (EXIT_FAILURE);
511 }
512
513 if (need_keys && ::thisnode
514 && rsa_key && thisnode && thisnode->rsa_key)
515 if (BN_cmp (rsa_key->n, thisnode->rsa_key->n) != 0
516 || BN_cmp (rsa_key->e, thisnode->rsa_key->e) != 0)
517 {
518 slog (L_NOTICE, _("private hostkey and public node key mismatch: is '%s' the correct node?"), ::thisnode);
519 exit (EXIT_FAILURE);
520 }
521
522 free (fname);
523}
524
525char *configuration::config_filename (const char *name, const char *dflt)
526{
527 char *fname;
528
529 asprintf (&fname, name ? name : dflt, ::thisnode);
530
531 if (!ABSOLUTE_PATH (fname))
532 {
533 char *rname = fname;
534 asprintf (&fname, "%s/%s", confbase, rname);
535 free (rname);
536 }
537
538 return fname;
539}
540
541void
542configuration::print ()
543{
544 printf (_("\nConfiguration\n\n"));
545 printf (_("# of nodes: %d\n"), nodes.size ());
546 printf (_("this node: %s\n"), thisnode ? thisnode->nodename : "<unset>");
547 printf (_("MTU: %d\n"), mtu);
548 printf (_("rekeying interval: %d\n"), rekey);
549 printf (_("keepalive interval: %d\n"), keepalive);
550 printf (_("interface: %s\n"), ifname);
551 printf (_("primary rsa key: %s\n"), prikeyfile ? prikeyfile : "<default>");
552 printf (_("rsa key size: %d\n"), rsa_key ? RSA_size (rsa_key) * 8 : -1);
553 printf ("\n");
554
555 printf ("%4s %-17s %s %-8.8s %-10.10s %s\n",
556 _("ID#"), _("MAC"), _("Com"), _("Conmode"), _("Node"), _("Host:Port"));
557
558 for (node_vector::iterator i = nodes.begin (); i != nodes.end (); ++i)
559 (*i)->print ();
560
561 printf ("\n");
562}
563
564configuration::configuration ()
565{
566 asprintf (&confbase, "%s/gvpe", CONFDIR);
567
568 init ();
569}
570
571configuration::~configuration ()
572{
573 cleanup ();
574}
575
576

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