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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 1.36 by pcg, Sun Mar 20 02:34:16 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) \
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
175void configuration::read_config (bool need_keys)
176{
177 char *fname;
178 FILE *f;
179
180 clear_config ();
181
182 asprintf (&fname, "%s/gvpe.conf", confbase);
183 f = fopen (fname, "r");
184
185 if (f)
186 {
187 char line[16384];
188 int lineno = 0;
189 char *var, *val;
190 conf_node *node = &default_node;
191
192 while (fgets (line, sizeof (line), f))
193 {
194 lineno++;
195
196 {
197 char *end = line + strlen (line);
198
199 while (*end < ' ' && end >= line)
200 end--;
201
202 *++end = 0;
203 }
204
205 char *tok = line;
206
207retry:
208 var = strtok (tok, "\t =");
209 tok = 0;
210
211 if (!var || !var[0])
212 continue; /* no tokens on this line */
213
214 if (var[0] == '#')
215 continue; /* comment: ignore */
216
217 val = strtok (NULL, "\t\n\r =");
218
219 if (!val || val[0] == '#')
220 {
221 slog (L_WARN,
222 _("no value for variable `%s', at '%s' line %d, skipping."),
223 var, fname, lineno);
224 continue;
225 }
226
227 if (!strcmp (var, "on"))
228 {
229 if (!::thisnode
230 || (val[0] == '!' && strcmp (val + 1, ::thisnode))
231 || !strcmp (val, ::thisnode))
232 goto retry;
233
234 continue;
235 }
236
237 // truly global
238 if (!strcmp (var, "loglevel"))
239 {
240 loglevel l = string_to_loglevel (val);
241
242 if (l != L_NONE)
243 llevel = l;
244 else
245 slog (L_WARN, "'%s': %s, at '%s' line %d", val, UNKNOWN_LOGLEVEL, fname, line);
246 }
247 else if (!strcmp (var, "ip-proto"))
248 ip_proto = atoi (val);
249 else if (!strcmp (var, "icmp-type"))
250 {
251#if ENABLE_ICMP
252 icmp_type = atoi (val);
253#endif
254 }
255
256 // per config
257 else if (!strcmp (var, "node"))
258 {
259 default_node.id++;
260
261 node = new conf_node (default_node);
262
263 nodes.push_back (node);
264
265 node->nodename = strdup (val);
266
267 {
268 char *fname;
269 FILE *f;
270
271 asprintf (&fname, "%s/pubkey/%s", confbase, node->nodename);
272
273 f = fopen (fname, "r");
274 if (f)
275 {
276 node->rsa_key = RSA_new ();
277
278 if (!PEM_read_RSAPublicKey(f, &node->rsa_key, NULL, NULL))
279 {
280 ERR_load_RSA_strings (); ERR_load_PEM_strings ();
281 slog (L_ERR, _("unable to open public rsa key file '%s': %s"), fname, ERR_error_string (ERR_get_error (), 0));
282 exit (EXIT_FAILURE);
283 }
284
285 require (RSA_blinding_on (node->rsa_key, 0));
286
287 fclose (f);
288 }
289 else
290 {
291 slog (need_keys ? L_ERR : L_NOTICE, _("unable to read public rsa key file '%s': %s"), fname, strerror (errno));
292
293 if (need_keys)
294 exit (EXIT_FAILURE);
295 }
296
297 free (fname);
298 }
299
300 if (::thisnode && !strcmp (node->nodename, ::thisnode))
301 thisnode = node;
302 }
303 else if (!strcmp (var, "private-key"))
304 free (prikeyfile), prikeyfile = strdup (val);
305 else if (!strcmp (var, "ifpersist"))
306 parse_bool (ifpersist, "ifpersist", true, false);
307 else if (!strcmp (var, "ifname"))
308 free (ifname), ifname = strdup (val);
309 else if (!strcmp (var, "rekey"))
310 rekey = atoi (val);
311 else if (!strcmp (var, "keepalive"))
312 keepalive = atoi (val);
313 else if (!strcmp (var, "mtu"))
314 mtu = atoi (val);
315 else if (!strcmp (var, "if-up"))
316 free (script_if_up), script_if_up = strdup (val);
317 else if (!strcmp (var, "node-up"))
318 free (script_node_up), script_node_up = strdup (val);
319 else if (!strcmp (var, "node-down"))
320 free (script_node_down), script_node_down = strdup (val);
321 else if (!strcmp (var, "pid-file"))
322 free (pidfilename), pidfilename = strdup (val);
323 else if (!strcmp (var, "dns-forw-host"))
324 {
325#if ENABLE_DNS
326 free (dns_forw_host), dns_forw_host = strdup (val);
327#endif
328 }
329 else if (!strcmp (var, "dns-forw-port"))
330 {
331#if ENABLE_DNS
332 dns_forw_port = atoi (val);
333#endif
334 }
335 else if (!strcmp (var, "http-proxy-host"))
336 {
337#if ENABLE_HTTP_PROXY
338 free (proxy_host), proxy_host = strdup (val);
339#endif
340 }
341 else if (!strcmp (var, "http-proxy-port"))
342 {
343#if ENABLE_HTTP_PROXY
344 proxy_port = atoi (val);
345#endif
346 }
347 else if (!strcmp (var, "http-proxy-auth"))
348 {
349#if ENABLE_HTTP_PROXY
350 proxy_auth = (char *)base64_encode ((const u8 *)val, strlen (val));
351#endif
352 }
353
354 /* node-specific, non-defaultable */
355 else if (node != &default_node && !strcmp (var, "hostname"))
356 free (node->hostname), node->hostname = strdup (val);
357
358 /* node-specific, defaultable */
359 else if (!strcmp (var, "udp-port"))
360 node->udp_port = atoi (val);
361 else if (!strcmp (var, "tcp-port"))
362 node->tcp_port = atoi (val);
363 else if (!strcmp (var, "dns-hostname"))
364 {
365#if ENABLE_DNS
366 free (node->dns_hostname), node->dns_hostname = strdup (val);
367#endif
368 }
369 else if (!strcmp (var, "dns-port"))
370 {
371#if ENABLE_DNS
372 node->dns_port = atoi (val);
373#endif
374 }
375 else if (!strcmp (var, "dns-domain"))
376 {
377#if ENABLE_DNS
378 free (node->domain), node->domain = strdup (val);
379#endif
380 }
381 else if (!strcmp (var, "router-priority"))
382 node->routerprio = atoi (val);
383 else if (!strcmp (var, "max-retry"))
384 node->max_retry = atoi (val);
385 else if (!strcmp (var, "connect"))
386 {
387 if (!strcmp (val, "ondemand"))
388 node->connectmode = conf_node::C_ONDEMAND;
389 else if (!strcmp (val, "never"))
390 node->connectmode = conf_node::C_NEVER;
391 else if (!strcmp (val, "always"))
392 node->connectmode = conf_node::C_ALWAYS;
393 else if (!strcmp (val, "disabled"))
394 node->connectmode = conf_node::C_DISABLED;
395 else
396 slog (L_WARN,
397 _("illegal value for 'connectmode', use one of 'ondemand', 'never', 'always' or 'disabled', at '%s' line %d, ignoring."),
398 var, fname, lineno);
399 }
400 else if (!strcmp (var, "inherit-tos"))
401 parse_bool (node->inherit_tos, "inherit-tos", true, false);
402 else if (!strcmp (var, "compress"))
403 parse_bool (node->compress, "compress", true, false);
404 // all these bool options really really cost a lot of executable size!
405 else if (!strcmp (var, "enable-tcp"))
406 {
407#if ENABLE_TCP
408 u8 v; parse_bool (v, "enable-tcp" , PROT_TCPv4, 0); node->protocols = (node->protocols & ~PROT_TCPv4) | v;
409#endif
410 }
411 else if (!strcmp (var, "enable-icmp"))
412 {
413#if ENABLE_ICMP
414 u8 v; parse_bool (v, "enable-icmp" , PROT_ICMPv4, 0); node->protocols = (node->protocols & ~PROT_ICMPv4) | v;
415#endif
416 }
417 else if (!strcmp (var, "enable-dns"))
418 {
419#if ENABLE_DNS
420 u8 v; parse_bool (v, "enable-dns" , PROT_DNSv4, 0); node->protocols = (node->protocols & ~PROT_DNSv4) | v;
421#endif
422 }
423 else if (!strcmp (var, "enable-udp"))
424 {
425 u8 v; parse_bool (v, "enable-udp" , PROT_UDPv4, 0); node->protocols = (node->protocols & ~PROT_UDPv4) | v;
426 }
427 else if (!strcmp (var, "enable-rawip"))
428 {
429 u8 v; parse_bool (v, "enable-rawip", PROT_IPv4, 0); node->protocols = (node->protocols & ~PROT_IPv4 ) | v;
430 }
431
432 // unknown or misplaced
433 else
434 slog (L_WARN,
435 _("unknown or misplaced variable `%s', at '%s' line %d, skipping."),
436 var, fname, lineno);
437 }
438
439 fclose (f);
440 }
441 else
442 {
443 slog (L_ERR, _("unable to read config file '%s': %s"), fname, strerror (errno));
444 exit (EXIT_FAILURE);
445 }
446
447 free (fname);
448
449 fname = config_filename (prikeyfile, "hostkey");
450
451 f = fopen (fname, "r");
452 if (f)
453 {
454 rsa_key = RSA_new ();
455
456 if (!PEM_read_RSAPrivateKey (f, &rsa_key, NULL, NULL))
457 {
458 ERR_load_RSA_strings (); ERR_load_PEM_strings ();
459 slog (L_ERR, _("unable to read private rsa key file '%s': %s"), fname, ERR_error_string (ERR_get_error (), 0));
460 exit (EXIT_FAILURE);
461 }
462
463 require (RSA_blinding_on (rsa_key, 0));
464
465 fclose (f);
466 }
467 else
468 {
469 slog (need_keys ? L_ERR : L_NOTICE, _("unable to open private rsa key file '%s': %s"), fname, strerror (errno));
470
471 if (need_keys)
472 exit (EXIT_FAILURE);
473 }
474
475 if (need_keys && ::thisnode
476 && rsa_key && thisnode && thisnode->rsa_key)
477 if (BN_cmp (rsa_key->n, thisnode->rsa_key->n) != 0
478 || BN_cmp (rsa_key->e, thisnode->rsa_key->e) != 0)
479 {
480 slog (L_NOTICE, _("private hostkey and public node key mismatch: is '%s' the correct node?"), ::thisnode);
481 exit (EXIT_FAILURE);
482 }
483
484 free (fname);
485}
486
487char *configuration::config_filename (const char *name, const char *dflt)
488{
489 char *fname;
490
491 asprintf (&fname, name ? name : dflt, ::thisnode);
492
493 if (!ABSOLUTE_PATH (fname))
494 {
495 char *rname = fname;
496 asprintf (&fname, "%s/%s", confbase, rname);
497 free (rname);
498 }
499
500 return fname;
501}
502
503void
504configuration::print ()
505{
506 printf (_("\nConfiguration\n\n"));
507 printf (_("# of nodes: %d\n"), nodes.size ());
508 printf (_("this node: %s\n"), thisnode ? thisnode->nodename : "<unset>");
509 printf (_("MTU: %d\n"), mtu);
510 printf (_("rekeying interval: %d\n"), rekey);
511 printf (_("keepalive interval: %d\n"), keepalive);
512 printf (_("interface: %s\n"), ifname);
513 printf (_("primary rsa key: %s\n"), prikeyfile ? prikeyfile : "<default>");
514 printf (_("rsa key size: %d\n"), rsa_key ? RSA_size (rsa_key) * 8 : -1);
515 printf ("\n");
516
517 printf ("%4s %-17s %s %-8.8s %-10.10s %s\n",
518 _("ID#"), _("MAC"), _("Com"), _("Conmode"), _("Node"), _("Host:Port"));
519
520 for (node_vector::iterator i = nodes.begin (); i != nodes.end (); ++i)
521 (*i)->print ();
522
523 printf ("\n");
524}
525
526configuration::configuration ()
527{
528 asprintf (&confbase, "%s/gvpe", CONFDIR);
529
530 init ();
531}
532
533configuration::~configuration ()
534{
535 cleanup ();
536}
537
538

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