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Comparing gvpe/src/conf.C (file contents):
Revision 1.7 by pcg, Fri Mar 28 16:21:09 2003 UTC vs.
Revision 1.37 by pcg, Wed Mar 23 14:33:34 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>
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
56u8 best_protocol (u8 protset) 52u8 best_protocol (u8 protset)
57{ 53{
58 if (protset & PROT_IPv4) 54 if (protset & PROT_IPv4 ) return PROT_IPv4;
59 return PROT_IPv4; 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
61 return PROT_UDPv4; 60 return 0;
62} 61}
63 62
64const char *strprotocol (u8 protocol) 63const char *strprotocol (u8 protocol)
65{ 64{
66 if (protocol & PROT_IPv4 ) return "rawip"; 65 if (protocol & PROT_IPv4 ) return "rawip";
66 if (protocol & PROT_ICMPv4) return "icmp";
67 if (protocol & PROT_UDPv4) return "udp"; 67 if (protocol & PROT_UDPv4 ) return "udp";
68 if (protocol & PROT_TCPv4 ) return "tcp";
69 if (protocol & PROT_DNSv4 ) return "dns";
68 70
69 return "<unknown>"; 71 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.connectmode = conf_node::C_ALWAYS;
93 default_node.compress = true;
94 default_node.protocols = PROT_UDPv4;
95}
96
97void configuration::cleanup()
98{
99 if (rsa_key)
100 RSA_free (rsa_key);
101
102 free (ifname);
103
104 rsa_key = 0;
105 ifname = 0;
106}
107
108void
109configuration::clear_config ()
110{
111 for (configuration::node_vector::iterator i = nodes.begin(); i != nodes.end(); ++i)
112 delete *i;
113
114 nodes.clear ();
115
116 cleanup ();
117 init ();
118}
119
120#define parse_bool(target,name,trueval,falseval) \
121 if (!strcmp (val, "yes")) target = trueval; \
122 else if (!strcmp (val, "no")) target = falseval; \
123 else if (!strcmp (val, "true")) target = trueval; \
124 else if (!strcmp (val, "false")) target = falseval; \
125 else if (!strcmp (val, "on")) target = trueval; \
126 else if (!strcmp (val, "off")) target = falseval; \
127 else \
128 slog (L_WARN, \
129 _("illegal value for '%s', only 'yes|true|on' or 'no|false|off' allowed, at '%s' line %d"), \
130 name, var, fname, lineno);
131
132void configuration::read_config (bool need_keys)
133{
134 char *fname;
135 FILE *f;
136
137 clear_config ();
138
139 asprintf (&fname, "%s/vped.conf", confbase);
140 f = fopen (fname, "r");
141
142 if (f)
143 {
144 char line[16384];
145 int lineno = 0;
146 char *var, *val;
147 conf_node *node = &default_node;
148
149 while (fgets (line, sizeof (line), f))
150 {
151 lineno++;
152
153 {
154 char *end = line + strlen (line);
155
156 while (*end < ' ' && end >= line)
157 end--;
158
159 *++end = 0;
160 }
161
162 char *tok = line;
163
164retry:
165 var = strtok (tok, "\t =");
166 tok = 0;
167
168 if (!var || !var[0])
169 continue; /* no tokens on this line */
170
171 if (var[0] == '#')
172 continue; /* comment: ignore */
173
174 val = strtok (NULL, "\t\n\r =");
175
176 if (!val || val[0] == '#')
177 {
178 slog (L_WARN,
179 _("no value for variable `%s', at '%s' line %d"),
180 var, fname, lineno);
181 break;
182 }
183
184 if (!strcmp (var, "on"))
185 {
186 if (!::thisnode
187 || (val[0] == '!' && strcmp (val + 1, ::thisnode))
188 || !strcmp (val, ::thisnode))
189 goto retry;
190
191 continue;
192 }
193
194 // truly global
195 if (!strcmp (var, "loglevel"))
196 {
197 loglevel l = string_to_loglevel (val);
198
199 if (l != L_NONE)
200 llevel = l;
201 else
202 slog (L_WARN, "'%s': %s, at '%s' line %d", val, UNKNOWN_LOGLEVEL, fname, line);
203 }
204 else if (!strcmp (var, "ip-proto"))
205 ip_proto = atoi (val);
206
207 // per config
208 else if (!strcmp (var, "node"))
209 {
210 default_node.id++;
211
212 node = new conf_node (default_node);
213
214 nodes.push_back (node);
215
216 node->nodename = strdup (val);
217
218 {
219 char *fname;
220 FILE *f;
221
222 asprintf (&fname, "%s/pubkey/%s", confbase, node->nodename);
223
224 f = fopen (fname, "r");
225 if (f)
226 {
227 node->rsa_key = RSA_new ();
228
229 if (!PEM_read_RSAPublicKey(f, &node->rsa_key, NULL, NULL))
230 {
231 ERR_load_RSA_strings (); ERR_load_PEM_strings ();
232 slog (L_ERR, _("unable to open public rsa key file '%s': %s"), fname, ERR_error_string (ERR_get_error (), 0));
233 exit (1);
234 }
235
236 RSA_blinding_on (node->rsa_key, 0);
237
238 fclose (f);
239 }
240 else
241 {
242 slog (need_keys ? L_ERR : L_NOTICE, _("unable to read public rsa key file '%s': %s"), fname, strerror (errno));
243
244 if (need_keys)
245 exit (1);
246 }
247
248 free (fname);
249 }
250
251 if (!::thisnode || !strcmp (node->nodename, ::thisnode))
252 thisnode = node;
253 }
254 else if (!strcmp (var, "private-key"))
255 prikeyfile = strdup (val);
256 else if (!strcmp (var, "ifpersist"))
257 {
258 parse_bool (ifpersist, "ifpersist", true, false);
259 }
260 else if (!strcmp (var, "ifname"))
261 ifname = strdup (val);
262 else if (!strcmp (var, "rekey"))
263 rekey = atoi (val);
264 else if (!strcmp (var, "keepalive"))
265 keepalive = atoi (val);
266 else if (!strcmp (var, "mtu"))
267 mtu = atoi (val);
268 else if (!strcmp (var, "if-up"))
269 script_if_up = strdup (val);
270 else if (!strcmp (var, "node-up"))
271 script_node_up = strdup (val);
272 else if (!strcmp (var, "node-down"))
273 script_node_down = strdup (val);
274
275 /* node-specific, non-defaultable */
276 else if (node != &default_node && !strcmp (var, "hostname"))
277 {
278 free (node->hostname);
279 node->hostname = strdup (val);
280 }
281
282 /* node-specific, defaultable */
283 else if (!strcmp (var, "udp-port"))
284 node->udp_port = atoi (val);
285 else if (!strcmp (var, "router-priority"))
286 node->routerprio = atoi (val);
287 else if (!strcmp (var, "connect"))
288 {
289 if (!strcmp (val, "ondemand"))
290 node->connectmode = conf_node::C_ONDEMAND;
291 else if (!strcmp (val, "never"))
292 node->connectmode = conf_node::C_NEVER;
293 else if (!strcmp (val, "always"))
294 node->connectmode = conf_node::C_ALWAYS;
295 else if (!strcmp (val, "disabled"))
296 node->connectmode = conf_node::C_DISABLED;
297 else
298 slog (L_WARN,
299 _("illegal value for 'connectmode', use one of 'ondemand', 'never', 'always' or 'disabled', at '%s' line %d"),
300 var, fname, lineno);
301 }
302 else if (!strcmp (var, "inherit-tos"))
303 {
304 parse_bool (node->inherit_tos, "inherit-tos", true, false);
305 }
306 else if (!strcmp (var, "compress"))
307 {
308 parse_bool (node->compress, "compress", true, false);
309 }
310 // all these bool options really really cost a lot of executable size!
311 else if (!strcmp (var, "enable-udp"))
312 {
313 u8 v; parse_bool (v, "enable-udp" , PROT_UDPv4, 0); node->protocols = (node->protocols & ~PROT_UDPv4) | v;
314 }
315 else if (!strcmp (var, "enable-rawip"))
316 {
317 u8 v; parse_bool (v, "enable-rawip", PROT_IPv4, 0); node->protocols = (node->protocols & ~PROT_IPv4 ) | v;
318 }
319
320 // unknown or misplaced
321 else
322 {
323 slog (L_WARN,
324 _("unknown or misplaced variable `%s', at '%s' line %d"),
325 var, fname, lineno);
326 }
327 }
328
329 fclose (f);
330 }
331 else
332 {
333 slog (L_ERR, _("unable to read config file '%s': %s"), fname, strerror (errno));
334 exit (1);
335 }
336
337 free (fname);
338
339 fname = config_filename (prikeyfile, "hostkey");
340
341 f = fopen (fname, "r");
342 if (f)
343 {
344 rsa_key = RSA_new ();
345
346 if (!PEM_read_RSAPrivateKey (f, &rsa_key, NULL, NULL))
347 {
348 ERR_load_RSA_strings (); ERR_load_PEM_strings ();
349 slog (L_ERR, _("unable to read private rsa key file '%s': %s"), fname, ERR_error_string (ERR_get_error (), 0));
350 exit (1);
351 }
352
353 RSA_blinding_on (rsa_key, 0);
354
355 fclose (f);
356 }
357 else
358 {
359 slog (need_keys ? L_ERR : L_NOTICE, _("unable to open private rsa key file '%s': %s"), fname, strerror (errno));
360
361 if (need_keys)
362 exit (1);
363 }
364
365 free (fname);
366}
367
368char *configuration::config_filename (const char *name, const char *dflt)
369{
370 char *fname;
371
372 asprintf (&fname, name ? name : dflt, ::thisnode);
373
374 if (!ABSOLUTE_PATH (fname))
375 {
376 char *rname = fname;
377 asprintf (&fname, "%s/%s", confbase, rname);
378 free (rname);
379 }
380
381 return fname;
382}
383
384void
385configuration::print ()
386{
387 printf (_("\nConfiguration\n\n"));
388 printf (_("# of nodes: %d\n"), nodes.size ());
389 printf (_("this node: %s\n"), thisnode ? thisnode->nodename : "<unset>");
390 printf (_("MTU: %d\n"), mtu);
391 printf (_("rekeying interval: %d\n"), rekey);
392 printf (_("keepalive interval: %d\n"), keepalive);
393 printf (_("interface: %s\n"), ifname);
394 printf (_("primary rsa key: %s\n"), prikeyfile ? prikeyfile : "<default>");
395 printf (_("rsa key size: %d\n"), rsa_key ? RSA_size (rsa_key) : -1);
396 printf ("\n");
397
398 printf ("%4s %-17s %s %-8.8s %-10.10s %s\n",
399 _("ID#"), _("MAC"), _("Com"), _("Conmode"), _("Node"), _("Host:Port"));
400
401 for (node_vector::iterator i = nodes.begin (); i != nodes.end (); ++i)
402 (*i)->print ();
403
404 printf ("\n");
405} 72}
406 73
407void 74void
408conf_node::print () 75conf_node::print ()
409{ 76{
… …
419 hostname ? ":" : "", 86 hostname ? ":" : "",
420 hostname ? udp_port : 0 87 hostname ? udp_port : 0
421 ); 88 );
422} 89}
423 90
91conf_node::~conf_node ()
92{
93 if (rsa_key)
94 RSA_free (rsa_key);
95
96 free (nodename);
97 free (hostname);
98#if ENABLE_DNS
99 free (domain);
100 free (dns_hostname);
101#endif
102}
103
104void configuration::init ()
105{
106 memset (this, 0, sizeof (*this));
107
108 mtu = DEFAULT_MTU;
109 rekey = DEFAULT_REKEY;
110 keepalive = DEFAULT_KEEPALIVE;
111 llevel = L_INFO;
112 ip_proto = IPPROTO_GRE;
113#if ENABLE_ICMP
114 icmp_type = ICMP_ECHOREPLY;
115#endif
116
117 default_node.udp_port = DEFAULT_UDPPORT;
118 default_node.tcp_port = DEFAULT_UDPPORT; // ehrm
119 default_node.connectmode = conf_node::C_ALWAYS;
120 default_node.compress = true;
121 default_node.protocols = 0;
122 default_node.max_retry = DEFAULT_MAX_RETRY;
123
124#if ENABLE_DNS
125 default_node.dns_port = 0; // default is 0 == client
126 dns_forw_host = strdup ("127.0.0.1");
127 dns_forw_port = 53;
128#endif
129
130 conf.pidfilename = strdup (LOCALSTATEDIR "/run/gvpe.pid");
131}
132
133void configuration::cleanup()
134{
135 if (rsa_key)
136 RSA_free (rsa_key);
137
138 rsa_key = 0;
139
140 free (pidfilename); pidfilename = 0;
141 free (ifname); ifname = 0;
142#if ENABLE_HTTP_PROXY
143 free (proxy_host); proxy_host = 0;
144 free (proxy_auth); proxy_auth = 0;
145#endif
146#if ENABLE_DNS
147 free (dns_forw_host); dns_forw_host = 0;
148#endif
149}
150
151void
152configuration::clear_config ()
153{
154 for (configuration::node_vector::iterator i = nodes.begin(); i != nodes.end(); ++i)
155 delete *i;
156
157 nodes.clear ();
158
159 cleanup ();
160 init ();
161}
162
163#define parse_bool(target,name,trueval,falseval) do { \
164 if (!strcmp (val, "yes")) target = trueval; \
165 else if (!strcmp (val, "no")) target = falseval; \
166 else if (!strcmp (val, "true")) target = trueval; \
167 else if (!strcmp (val, "false")) target = falseval; \
168 else if (!strcmp (val, "on")) target = trueval; \
169 else if (!strcmp (val, "off")) target = falseval; \
170 else \
171 slog (L_WARN, \
172 _("illegal value for '%s', only 'yes|true|on' or 'no|false|off' allowed, at '%s' line %d"), \
173 name, var, fname, lineno); \
174} while (0)
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, skipping."),
224 var, fname, lineno);
225 continue;
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 parse_bool (ifpersist, "ifpersist", true, false);
308 else if (!strcmp (var, "ifname"))
309 free (ifname), ifname = strdup (val);
310 else if (!strcmp (var, "rekey"))
311 rekey = atoi (val);
312 else if (!strcmp (var, "keepalive"))
313 keepalive = atoi (val);
314 else if (!strcmp (var, "mtu"))
315 mtu = atoi (val);
316 else if (!strcmp (var, "if-up"))
317 free (script_if_up), script_if_up = strdup (val);
318 else if (!strcmp (var, "node-up"))
319 free (script_node_up), script_node_up = strdup (val);
320 else if (!strcmp (var, "node-down"))
321 free (script_node_down), script_node_down = strdup (val);
322 else if (!strcmp (var, "pid-file"))
323 free (pidfilename), pidfilename = strdup (val);
324 else if (!strcmp (var, "dns-forw-host"))
325 {
326#if ENABLE_DNS
327 free (dns_forw_host), dns_forw_host = strdup (val);
328#endif
329 }
330 else if (!strcmp (var, "dns-forw-port"))
331 {
332#if ENABLE_DNS
333 dns_forw_port = atoi (val);
334#endif
335 }
336 else if (!strcmp (var, "http-proxy-host"))
337 {
338#if ENABLE_HTTP_PROXY
339 free (proxy_host), proxy_host = strdup (val);
340#endif
341 }
342 else if (!strcmp (var, "http-proxy-port"))
343 {
344#if ENABLE_HTTP_PROXY
345 proxy_port = atoi (val);
346#endif
347 }
348 else if (!strcmp (var, "http-proxy-auth"))
349 {
350#if ENABLE_HTTP_PROXY
351 proxy_auth = (char *)base64_encode ((const u8 *)val, strlen (val));
352#endif
353 }
354
355 /* node-specific, non-defaultable */
356 else if (node != &default_node && !strcmp (var, "hostname"))
357 free (node->hostname), node->hostname = strdup (val);
358
359 /* node-specific, defaultable */
360 else if (!strcmp (var, "udp-port"))
361 node->udp_port = atoi (val);
362 else if (!strcmp (var, "tcp-port"))
363 node->tcp_port = atoi (val);
364 else if (!strcmp (var, "dns-hostname"))
365 {
366#if ENABLE_DNS
367 free (node->dns_hostname), node->dns_hostname = strdup (val);
368#endif
369 }
370 else if (!strcmp (var, "dns-port"))
371 {
372#if ENABLE_DNS
373 node->dns_port = atoi (val);
374#endif
375 }
376 else if (!strcmp (var, "dns-domain"))
377 {
378#if ENABLE_DNS
379 free (node->domain), node->domain = strdup (val);
380#endif
381 }
382 else if (!strcmp (var, "router-priority"))
383 node->routerprio = atoi (val);
384 else if (!strcmp (var, "max-retry"))
385 node->max_retry = atoi (val);
386 else if (!strcmp (var, "connect"))
387 {
388 if (!strcmp (val, "ondemand"))
389 node->connectmode = conf_node::C_ONDEMAND;
390 else if (!strcmp (val, "never"))
391 node->connectmode = conf_node::C_NEVER;
392 else if (!strcmp (val, "always"))
393 node->connectmode = conf_node::C_ALWAYS;
394 else if (!strcmp (val, "disabled"))
395 node->connectmode = conf_node::C_DISABLED;
396 else
397 slog (L_WARN,
398 _("illegal value for 'connectmode', use one of 'ondemand', 'never', 'always' or 'disabled', at '%s' line %d, ignoring."),
399 var, fname, lineno);
400 }
401 else if (!strcmp (var, "inherit-tos"))
402 parse_bool (node->inherit_tos, "inherit-tos", true, false);
403 else if (!strcmp (var, "compress"))
404 parse_bool (node->compress, "compress", true, false);
405 // all these bool options really really cost a lot of executable size!
406 else if (!strcmp (var, "enable-tcp"))
407 {
408#if ENABLE_TCP
409 u8 v; parse_bool (v, "enable-tcp" , PROT_TCPv4, 0); node->protocols = (node->protocols & ~PROT_TCPv4) | v;
410#endif
411 }
412 else if (!strcmp (var, "enable-icmp"))
413 {
414#if ENABLE_ICMP
415 u8 v; parse_bool (v, "enable-icmp" , PROT_ICMPv4, 0); node->protocols = (node->protocols & ~PROT_ICMPv4) | v;
416#endif
417 }
418 else if (!strcmp (var, "enable-dns"))
419 {
420#if ENABLE_DNS
421 u8 v; parse_bool (v, "enable-dns" , PROT_DNSv4, 0); node->protocols = (node->protocols & ~PROT_DNSv4) | v;
422#endif
423 }
424 else if (!strcmp (var, "enable-udp"))
425 {
426 u8 v; parse_bool (v, "enable-udp" , PROT_UDPv4, 0); node->protocols = (node->protocols & ~PROT_UDPv4) | v;
427 }
428 else if (!strcmp (var, "enable-rawip"))
429 {
430 u8 v; parse_bool (v, "enable-rawip", PROT_IPv4, 0); node->protocols = (node->protocols & ~PROT_IPv4 ) | v;
431 }
432
433 // unknown or misplaced
434 else
435 slog (L_WARN,
436 _("unknown or misplaced variable `%s', at '%s' line %d, skipping."),
437 var, fname, lineno);
438 }
439
440 fclose (f);
441 }
442 else
443 {
444 slog (L_ERR, _("unable to read config file '%s': %s"), fname, strerror (errno));
445 exit (EXIT_FAILURE);
446 }
447
448 free (fname);
449
450 fname = config_filename (prikeyfile, "hostkey");
451
452 f = fopen (fname, "r");
453 if (f)
454 {
455 rsa_key = RSA_new ();
456
457 if (!PEM_read_RSAPrivateKey (f, &rsa_key, NULL, NULL))
458 {
459 ERR_load_RSA_strings (); ERR_load_PEM_strings ();
460 slog (L_ERR, _("unable to read private rsa key file '%s': %s"), fname, ERR_error_string (ERR_get_error (), 0));
461 exit (EXIT_FAILURE);
462 }
463
464 require (RSA_blinding_on (rsa_key, 0));
465
466 fclose (f);
467 }
468 else
469 {
470 slog (need_keys ? L_ERR : L_NOTICE, _("unable to open private rsa key file '%s': %s"), fname, strerror (errno));
471
472 if (need_keys)
473 exit (EXIT_FAILURE);
474 }
475
476 if (need_keys && ::thisnode
477 && rsa_key && thisnode && thisnode->rsa_key)
478 if (BN_cmp (rsa_key->n, thisnode->rsa_key->n) != 0
479 || BN_cmp (rsa_key->e, thisnode->rsa_key->e) != 0)
480 {
481 slog (L_NOTICE, _("private hostkey and public node key mismatch: is '%s' the correct node?"), ::thisnode);
482 exit (EXIT_FAILURE);
483 }
484
485 free (fname);
486}
487
488char *configuration::config_filename (const char *name, const char *dflt)
489{
490 char *fname;
491
492 asprintf (&fname, name ? name : dflt, ::thisnode);
493
494 if (!ABSOLUTE_PATH (fname))
495 {
496 char *rname = fname;
497 asprintf (&fname, "%s/%s", confbase, rname);
498 free (rname);
499 }
500
501 return fname;
502}
503
504void
505configuration::print ()
506{
507 printf (_("\nConfiguration\n\n"));
508 printf (_("# of nodes: %d\n"), nodes.size ());
509 printf (_("this node: %s\n"), thisnode ? thisnode->nodename : "<unset>");
510 printf (_("MTU: %d\n"), mtu);
511 printf (_("rekeying interval: %d\n"), rekey);
512 printf (_("keepalive interval: %d\n"), keepalive);
513 printf (_("interface: %s\n"), ifname);
514 printf (_("primary rsa key: %s\n"), prikeyfile ? prikeyfile : "<default>");
515 printf (_("rsa key size: %d\n"), rsa_key ? RSA_size (rsa_key) * 8 : -1);
516 printf ("\n");
517
518 printf ("%4s %-17s %s %-8.8s %-10.10s %s\n",
519 _("ID#"), _("MAC"), _("Com"), _("Conmode"), _("Node"), _("Host:Port"));
520
521 for (node_vector::iterator i = nodes.begin (); i != nodes.end (); ++i)
522 (*i)->print ();
523
524 printf ("\n");
525}
526
527configuration::configuration ()
528{
529 asprintf (&confbase, "%s/gvpe", CONFDIR);
530
531 init ();
532}
533
534configuration::~configuration ()
535{
536 cleanup ();
537}
538
539

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