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Comparing gvpe/src/conf.C (file contents):
Revision 1.5 by pcg, Fri Mar 28 04:05:10 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
56configuration::configuration () 54u8 best_protocol (u8 protset)
57{ 55{
58 init (); 56 if (protset & PROT_IPv4 ) return PROT_IPv4;
59} 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
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.can_send = PROT_UDPv4;
79 default_node.can_recv = PROT_IPv4;
80}
81
82void configuration::cleanup()
83{
84 if (rsa_key)
85 RSA_free (rsa_key);
86
87 free (ifname);
88
89 rsa_key = 0;
90 ifname = 0;
91}
92
93void
94configuration::clear_config ()
95{
96 for (configuration::node_vector::iterator i = nodes.begin(); i != nodes.end(); ++i)
97 delete *i;
98
99 nodes.clear ();
100
101 cleanup ();
102 init ();
103}
104
105#define parse_bool(target,name,trueval,falseval) \
106 if (!strcmp (val, "yes")) target = trueval; \
107 else if (!strcmp (val, "no")) target = falseval; \
108 else if (!strcmp (val, "true")) target = trueval; \
109 else if (!strcmp (val, "false")) target = falseval; \
110 else if (!strcmp (val, "on")) target = trueval; \
111 else if (!strcmp (val, "off")) target = falseval; \
112 else \
113 slog (L_WARN, \
114 _("illegal value for '%s', only 'yes|true|on' or 'no|false|off' allowed, at '%s' line %d"), \
115 name, var, fname, lineno);
116
117void configuration::read_config (bool need_keys)
118{
119 char *fname;
120 FILE *f;
121
122 clear_config ();
123
124 asprintf (&fname, "%s/vped.conf", confbase);
125 f = fopen (fname, "r");
126
127 if (f)
128 {
129 char line[16384];
130 int lineno = 0;
131 char *var, *val;
132 conf_node *node = &default_node;
133
134 while (fgets (line, sizeof (line), f))
135 {
136 lineno++;
137
138 {
139 char *end = line + strlen (line);
140
141 while (*end < ' ' && end >= line)
142 end--;
143
144 *++end = 0;
145 }
146
147 char *tok = line;
148
149retry:
150 var = strtok (tok, "\t =");
151 tok = 0;
152
153 if (!var || !var[0])
154 continue; /* no tokens on this line */
155
156 if (var[0] == '#')
157 continue; /* comment: ignore */
158
159 val = strtok (NULL, "\t\n\r =");
160
161 if (!val || val[0] == '#')
162 {
163 slog (L_WARN,
164 _("no value for variable `%s', at '%s' line %d"),
165 var, fname, lineno);
166 break;
167 }
168
169 if (!strcmp (var, "on"))
170 {
171 if (!::thisnode
172 || (val[0] == '!' && strcmp (val + 1, ::thisnode))
173 || !strcmp (val, ::thisnode))
174 goto retry;
175
176 continue;
177 }
178
179 // truly global
180 if (!strcmp (var, "loglevel"))
181 {
182 loglevel l = string_to_loglevel (val);
183
184 if (l != L_NONE)
185 llevel = l;
186 else
187 slog (L_WARN, "'%s': %s, at '%s' line %d", val, UNKNOWN_LOGLEVEL, fname, line);
188 }
189 else if (!strcmp (var, "ip-proto"))
190 ip_proto = atoi (val);
191
192 // per config
193 else if (!strcmp (var, "node"))
194 {
195 default_node.id++;
196
197 node = new conf_node (default_node);
198
199 nodes.push_back (node);
200
201 node->nodename = strdup (val);
202
203 {
204 char *fname;
205 FILE *f;
206
207 asprintf (&fname, "%s/pubkey/%s", confbase, node->nodename);
208
209 f = fopen (fname, "r");
210 if (f)
211 {
212 node->rsa_key = RSA_new ();
213
214 if (!PEM_read_RSAPublicKey(f, &node->rsa_key, NULL, NULL))
215 {
216 ERR_load_RSA_strings (); ERR_load_PEM_strings ();
217 slog (L_ERR, _("unable to open public rsa key file '%s': %s"), fname, ERR_error_string (ERR_get_error (), 0));
218 exit (1);
219 }
220
221 RSA_blinding_on (node->rsa_key, 0);
222
223 fclose (f);
224 }
225 else
226 {
227 slog (need_keys ? L_ERR : L_NOTICE, _("unable to read public rsa key file '%s': %s"), fname, strerror (errno));
228
229 if (need_keys)
230 exit (1);
231 }
232
233 free (fname);
234 }
235
236 if (!::thisnode || !strcmp (node->nodename, ::thisnode))
237 thisnode = node;
238 }
239 else if (!strcmp (var, "private-key"))
240 prikeyfile = strdup (val);
241 else if (!strcmp (var, "ifpersist"))
242 {
243 parse_bool (ifpersist, "ifpersist", true, false);
244 }
245 else if (!strcmp (var, "ifname"))
246 ifname = strdup (val);
247 else if (!strcmp (var, "rekey"))
248 rekey = atoi (val);
249 else if (!strcmp (var, "keepalive"))
250 keepalive = atoi (val);
251 else if (!strcmp (var, "mtu"))
252 mtu = atoi (val);
253 else if (!strcmp (var, "if-up"))
254 script_if_up = strdup (val);
255 else if (!strcmp (var, "node-up"))
256 script_node_up = strdup (val);
257 else if (!strcmp (var, "node-down"))
258 script_node_down = strdup (val);
259
260 /* node-specific, non-defaultable */
261 else if (node != &default_node && !strcmp (var, "hostname"))
262 {
263 free (node->hostname);
264 node->hostname = strdup (val);
265 }
266
267 /* node-specific, defaultable */
268 else if (!strcmp (var, "udp-port"))
269 node->udp_port = atoi (val);
270 else if (!strcmp (var, "router-priority"))
271 node->routerprio = atoi (val);
272 else if (!strcmp (var, "connect"))
273 {
274 if (!strcmp (val, "ondemand"))
275 node->connectmode = conf_node::C_ONDEMAND;
276 else if (!strcmp (val, "never"))
277 node->connectmode = conf_node::C_NEVER;
278 else if (!strcmp (val, "always"))
279 node->connectmode = conf_node::C_ALWAYS;
280 else if (!strcmp (val, "disabled"))
281 node->connectmode = conf_node::C_DISABLED;
282 else
283 slog (L_WARN,
284 _("illegal value for 'connectmode', use one of 'ondemand', 'never', 'always' or 'disabled', at '%s' line %d"),
285 var, fname, lineno);
286 }
287 else if (!strcmp (var, "inherit-tos"))
288 {
289 parse_bool (node->inherit_tos, "inherit-tos", true, false);
290 }
291 else if (!strcmp (var, "compress"))
292 {
293 parse_bool (node->compress, "compress", true, false);
294 }
295 // all these bool options really really cost a lot of executable size!
296 else if (!strcmp (var, "can-send-udp"))
297 {
298 u8 v; parse_bool (v, "can-send-udp", PROT_UDPv4, 0); node->can_send = (node->can_send & ~PROT_UDPv4) | v;
299 }
300 else if (!strcmp (var, "can-recv-udp"))
301 {
302 u8 v; parse_bool (v, "can-recv-udp", PROT_UDPv4, 0); node->can_recv = (node->can_recv & ~PROT_UDPv4) | v;
303 }
304 else if (!strcmp (var, "can-send-rawip"))
305 {
306 u8 v; parse_bool (v, "can-send-rawip", PROT_IPv4, 0); node->can_send = (node->can_send & ~PROT_IPv4) | v;
307 }
308 else if (!strcmp (var, "can-recv-rawip"))
309 {
310 u8 v; parse_bool (v, "can-recv-rawip", PROT_IPv4, 0); node->can_recv = (node->can_recv & ~PROT_IPv4) | v;
311 }
312
313 // unknown or misplaced
314 else
315 {
316 slog (L_WARN,
317 _("unknown or misplaced variable `%s', at '%s' line %d"),
318 var, fname, lineno);
319 }
320 }
321
322 fclose (f);
323 }
324 else
325 {
326 slog (L_ERR, _("unable to read config file '%s': %s"), fname, strerror (errno));
327 exit (1);
328 }
329
330 free (fname);
331
332 fname = config_filename (prikeyfile, "hostkey");
333
334 f = fopen (fname, "r");
335 if (f)
336 {
337 rsa_key = RSA_new ();
338
339 if (!PEM_read_RSAPrivateKey (f, &rsa_key, NULL, NULL))
340 {
341 ERR_load_RSA_strings (); ERR_load_PEM_strings ();
342 slog (L_ERR, _("unable to read private rsa key file '%s': %s"), fname, ERR_error_string (ERR_get_error (), 0));
343 exit (1);
344 }
345
346 RSA_blinding_on (rsa_key, 0);
347
348 fclose (f);
349 }
350 else
351 {
352 slog (need_keys ? L_ERR : L_NOTICE, _("unable to open private rsa key file '%s': %s"), fname, strerror (errno));
353
354 if (need_keys)
355 exit (1);
356 }
357
358 free (fname);
359}
360
361char *configuration::config_filename (const char *name, const char *dflt)
362{
363 char *fname;
364
365 asprintf (&fname, name ? name : dflt, ::thisnode);
366
367 if (!ABSOLUTE_PATH (fname))
368 {
369 char *rname = fname;
370 asprintf (&fname, "%s/%s", confbase, rname);
371 free (rname);
372 }
373
374 return fname; 62 return 0;
375} 63}
376 64
377void 65const char *strprotocol (u8 protocol)
378configuration::print ()
379{ 66{
380 printf (_("\nConfiguration\n\n")); 67 if (protocol & PROT_IPv4 ) return "rawip";
381 printf (_("# of nodes: %d\n"), nodes.size ()); 68 if (protocol & PROT_ICMPv4) return "icmp";
382 printf (_("this node: %s\n"), thisnode ? thisnode->nodename : "<unset>"); 69 if (protocol & PROT_UDPv4 ) return "udp";
383 printf (_("MTU: %d\n"), mtu); 70 if (protocol & PROT_TCPv4 ) return "tcp";
384 printf (_("rekeying interval: %d\n"), rekey); 71 if (protocol & PROT_DNSv4 ) return "dns";
385 printf (_("keepalive interval: %d\n"), keepalive);
386 printf (_("interface: %s\n"), ifname);
387 printf (_("primary rsa key: %s\n"), prikeyfile ? prikeyfile : "<default>");
388 printf (_("rsa key size: %d\n"), rsa_key ? RSA_size (rsa_key) : -1);
389 printf ("\n");
390 72
391 printf ("%4s %-17s %s %-8.8s %-10.10s %s\n", 73 return "<unknown>";
392 _("ID#"), _("MAC"), _("Com"), _("Conmode"), _("Node"), _("Host:Port"));
393
394 for (node_vector::iterator i = nodes.begin (); i != nodes.end (); ++i)
395 (*i)->print ();
396
397 printf ("\n");
398} 74}
399 75
400void 76void
401conf_node::print () 77conf_node::print ()
402{ 78{
… …
412 hostname ? ":" : "", 88 hostname ? ":" : "",
413 hostname ? udp_port : 0 89 hostname ? udp_port : 0
414 ); 90 );
415} 91}
416 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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