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Comparing gvpe/src/conf.C (file contents):
Revision 1.8 by pcg, Wed Apr 2 03:25:17 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) 56 if (protset & PROT_IPv4 ) return PROT_IPv4;
59 return PROT_IPv4; 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
61 return PROT_UDPv4; 62 return 0;
62} 63}
63 64
64const char *strprotocol (u8 protocol) 65const char *strprotocol (u8 protocol)
65{ 66{
66 if (protocol & PROT_IPv4 ) return "rawip"; 67 if (protocol & PROT_IPv4 ) return "rawip";
68 if (protocol & PROT_ICMPv4) return "icmp";
67 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";
68 72
69 return "<unknown>"; 73 return "<unknown>";
70}
71
72configuration::configuration ()
73{
74 init ();
75}
76
77configuration::~configuration ()
78{
79 cleanup ();
80}
81
82void configuration::init ()
83{
84 memset (this, 0, sizeof (*this));
85
86 rekey = DEFAULT_REKEY;
87 keepalive = DEFAULT_KEEPALIVE;
88 llevel = L_INFO;
89 ip_proto = IPPROTO_GRE;
90
91 default_node.udp_port = DEFAULT_UDPPORT;
92 default_node.tcp_port = DEFAULT_UDPPORT;
93 default_node.connectmode = conf_node::C_ALWAYS;
94 default_node.compress = true;
95 default_node.protocols = PROT_UDPv4;
96}
97
98void configuration::cleanup()
99{
100 if (rsa_key)
101 RSA_free (rsa_key);
102
103 free (ifname);
104
105 rsa_key = 0;
106 ifname = 0;
107}
108
109void
110configuration::clear_config ()
111{
112 for (configuration::node_vector::iterator i = nodes.begin(); i != nodes.end(); ++i)
113 delete *i;
114
115 nodes.clear ();
116
117 cleanup ();
118 init ();
119}
120
121#define parse_bool(target,name,trueval,falseval) \
122 if (!strcmp (val, "yes")) target = trueval; \
123 else if (!strcmp (val, "no")) target = falseval; \
124 else if (!strcmp (val, "true")) target = trueval; \
125 else if (!strcmp (val, "false")) target = falseval; \
126 else if (!strcmp (val, "on")) target = trueval; \
127 else if (!strcmp (val, "off")) target = falseval; \
128 else \
129 slog (L_WARN, \
130 _("illegal value for '%s', only 'yes|true|on' or 'no|false|off' allowed, at '%s' line %d"), \
131 name, var, fname, lineno);
132
133void configuration::read_config (bool need_keys)
134{
135 char *fname;
136 FILE *f;
137
138 clear_config ();
139
140 asprintf (&fname, "%s/vped.conf", confbase);
141 f = fopen (fname, "r");
142
143 if (f)
144 {
145 char line[16384];
146 int lineno = 0;
147 char *var, *val;
148 conf_node *node = &default_node;
149
150 while (fgets (line, sizeof (line), f))
151 {
152 lineno++;
153
154 {
155 char *end = line + strlen (line);
156
157 while (*end < ' ' && end >= line)
158 end--;
159
160 *++end = 0;
161 }
162
163 char *tok = line;
164
165retry:
166 var = strtok (tok, "\t =");
167 tok = 0;
168
169 if (!var || !var[0])
170 continue; /* no tokens on this line */
171
172 if (var[0] == '#')
173 continue; /* comment: ignore */
174
175 val = strtok (NULL, "\t\n\r =");
176
177 if (!val || val[0] == '#')
178 {
179 slog (L_WARN,
180 _("no value for variable `%s', at '%s' line %d"),
181 var, fname, lineno);
182 break;
183 }
184
185 if (!strcmp (var, "on"))
186 {
187 if (!::thisnode
188 || (val[0] == '!' && strcmp (val + 1, ::thisnode))
189 || !strcmp (val, ::thisnode))
190 goto retry;
191
192 continue;
193 }
194
195 // truly global
196 if (!strcmp (var, "loglevel"))
197 {
198 loglevel l = string_to_loglevel (val);
199
200 if (l != L_NONE)
201 llevel = l;
202 else
203 slog (L_WARN, "'%s': %s, at '%s' line %d", val, UNKNOWN_LOGLEVEL, fname, line);
204 }
205 else if (!strcmp (var, "ip-proto"))
206 ip_proto = atoi (val);
207
208 // per config
209 else if (!strcmp (var, "node"))
210 {
211 default_node.id++;
212
213 node = new conf_node (default_node);
214
215 nodes.push_back (node);
216
217 node->nodename = strdup (val);
218
219 {
220 char *fname;
221 FILE *f;
222
223 asprintf (&fname, "%s/pubkey/%s", confbase, node->nodename);
224
225 f = fopen (fname, "r");
226 if (f)
227 {
228 node->rsa_key = RSA_new ();
229
230 if (!PEM_read_RSAPublicKey(f, &node->rsa_key, NULL, NULL))
231 {
232 ERR_load_RSA_strings (); ERR_load_PEM_strings ();
233 slog (L_ERR, _("unable to open public rsa key file '%s': %s"), fname, ERR_error_string (ERR_get_error (), 0));
234 exit (1);
235 }
236
237 RSA_blinding_on (node->rsa_key, 0);
238
239 fclose (f);
240 }
241 else
242 {
243 slog (need_keys ? L_ERR : L_NOTICE, _("unable to read public rsa key file '%s': %s"), fname, strerror (errno));
244
245 if (need_keys)
246 exit (1);
247 }
248
249 free (fname);
250 }
251
252 if (!::thisnode || !strcmp (node->nodename, ::thisnode))
253 thisnode = node;
254 }
255 else if (!strcmp (var, "private-key"))
256 prikeyfile = strdup (val);
257 else if (!strcmp (var, "ifpersist"))
258 {
259 parse_bool (ifpersist, "ifpersist", true, false);
260 }
261 else if (!strcmp (var, "ifname"))
262 ifname = strdup (val);
263 else if (!strcmp (var, "rekey"))
264 rekey = atoi (val);
265 else if (!strcmp (var, "keepalive"))
266 keepalive = atoi (val);
267 else if (!strcmp (var, "mtu"))
268 mtu = atoi (val);
269 else if (!strcmp (var, "if-up"))
270 script_if_up = strdup (val);
271 else if (!strcmp (var, "node-up"))
272 script_node_up = strdup (val);
273 else if (!strcmp (var, "node-down"))
274 script_node_down = strdup (val);
275
276 /* node-specific, non-defaultable */
277 else if (node != &default_node && !strcmp (var, "hostname"))
278 {
279 free (node->hostname);
280 node->hostname = strdup (val);
281 }
282
283 /* node-specific, defaultable */
284 else if (!strcmp (var, "udp-port"))
285 node->udp_port = atoi (val);
286 else if (!strcmp (var, "tcp-port"))
287 node->tcp_port = atoi (val);
288 else if (!strcmp (var, "router-priority"))
289 node->routerprio = atoi (val);
290 else if (!strcmp (var, "connect"))
291 {
292 if (!strcmp (val, "ondemand"))
293 node->connectmode = conf_node::C_ONDEMAND;
294 else if (!strcmp (val, "never"))
295 node->connectmode = conf_node::C_NEVER;
296 else if (!strcmp (val, "always"))
297 node->connectmode = conf_node::C_ALWAYS;
298 else if (!strcmp (val, "disabled"))
299 node->connectmode = conf_node::C_DISABLED;
300 else
301 slog (L_WARN,
302 _("illegal value for 'connectmode', use one of 'ondemand', 'never', 'always' or 'disabled', at '%s' line %d"),
303 var, fname, lineno);
304 }
305 else if (!strcmp (var, "inherit-tos"))
306 {
307 parse_bool (node->inherit_tos, "inherit-tos", true, false);
308 }
309 else if (!strcmp (var, "compress"))
310 {
311 parse_bool (node->compress, "compress", true, false);
312 }
313 // all these bool options really really cost a lot of executable size!
314 else if (!strcmp (var, "enable-tcp"))
315 {
316 u8 v; parse_bool (v, "enable-tcp" , PROT_TCPv4, 0); node->protocols = (node->protocols & ~PROT_TCPv4) | v;
317 }
318 else if (!strcmp (var, "enable-udp"))
319 {
320 u8 v; parse_bool (v, "enable-udp" , PROT_UDPv4, 0); node->protocols = (node->protocols & ~PROT_UDPv4) | v;
321 }
322 else if (!strcmp (var, "enable-rawip"))
323 {
324 u8 v; parse_bool (v, "enable-rawip", PROT_IPv4, 0); node->protocols = (node->protocols & ~PROT_IPv4 ) | v;
325 }
326
327 // unknown or misplaced
328 else
329 {
330 slog (L_WARN,
331 _("unknown or misplaced variable `%s', at '%s' line %d"),
332 var, fname, lineno);
333 }
334 }
335
336 fclose (f);
337 }
338 else
339 {
340 slog (L_ERR, _("unable to read config file '%s': %s"), fname, strerror (errno));
341 exit (1);
342 }
343
344 free (fname);
345
346 fname = config_filename (prikeyfile, "hostkey");
347
348 f = fopen (fname, "r");
349 if (f)
350 {
351 rsa_key = RSA_new ();
352
353 if (!PEM_read_RSAPrivateKey (f, &rsa_key, NULL, NULL))
354 {
355 ERR_load_RSA_strings (); ERR_load_PEM_strings ();
356 slog (L_ERR, _("unable to read private rsa key file '%s': %s"), fname, ERR_error_string (ERR_get_error (), 0));
357 exit (1);
358 }
359
360 RSA_blinding_on (rsa_key, 0);
361
362 fclose (f);
363 }
364 else
365 {
366 slog (need_keys ? L_ERR : L_NOTICE, _("unable to open private rsa key file '%s': %s"), fname, strerror (errno));
367
368 if (need_keys)
369 exit (1);
370 }
371
372 free (fname);
373}
374
375char *configuration::config_filename (const char *name, const char *dflt)
376{
377 char *fname;
378
379 asprintf (&fname, name ? name : dflt, ::thisnode);
380
381 if (!ABSOLUTE_PATH (fname))
382 {
383 char *rname = fname;
384 asprintf (&fname, "%s/%s", confbase, rname);
385 free (rname);
386 }
387
388 return fname;
389}
390
391void
392configuration::print ()
393{
394 printf (_("\nConfiguration\n\n"));
395 printf (_("# of nodes: %d\n"), nodes.size ());
396 printf (_("this node: %s\n"), thisnode ? thisnode->nodename : "<unset>");
397 printf (_("MTU: %d\n"), mtu);
398 printf (_("rekeying interval: %d\n"), rekey);
399 printf (_("keepalive interval: %d\n"), keepalive);
400 printf (_("interface: %s\n"), ifname);
401 printf (_("primary rsa key: %s\n"), prikeyfile ? prikeyfile : "<default>");
402 printf (_("rsa key size: %d\n"), rsa_key ? RSA_size (rsa_key) : -1);
403 printf ("\n");
404
405 printf ("%4s %-17s %s %-8.8s %-10.10s %s\n",
406 _("ID#"), _("MAC"), _("Com"), _("Conmode"), _("Node"), _("Host:Port"));
407
408 for (node_vector::iterator i = nodes.begin (); i != nodes.end (); ++i)
409 (*i)->print ();
410
411 printf ("\n");
412} 74}
413 75
414void 76void
415conf_node::print () 77conf_node::print ()
416{ 78{
… …
426 hostname ? ":" : "", 88 hostname ? ":" : "",
427 hostname ? udp_port : 0 89 hostname ? udp_port : 0
428 ); 90 );
429} 91}
430 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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