ViewVC Help
View File | Revision Log | Show Annotations | Download File
/cvs/gvpe/src/conf.C
(Generate patch)

Comparing gvpe/src/conf.C (file contents):
Revision 1.1 by pcg, Sat Mar 1 15:53:03 2003 UTC vs.
Revision 1.42 by pcg, Mon Dec 5 12:58:08 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. 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
22*/ 20*/
23 21
24#include "config.h" 22#include "config.h"
25 23
26#include <cstdio> 24#include <cstdio>
… …
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
34#include "netcompat.h"
35
36#include <openssl/err.h> 36#include <openssl/err.h>
37#include <openssl/pem.h> 37#include <openssl/pem.h>
38#include <openssl/rsa.h> 38#include <openssl/rsa.h>
39#include <openssl/rand.h> 39#include <openssl/rand.h>
40 40#include <openssl/bn.h>
41#include "gettext.h"
42 41
43#include "conf.h" 42#include "conf.h"
44#include "slog.h" 43#include "slog.h"
45#include "util.h" 44#include "util.h"
46 45
47char *confbase; 46char *confbase;
48char *thisnode; 47char *thisnode;
49char *identname; 48char *identname;
50char *pidfilename;
51 49
52struct configuration conf; 50struct configuration conf;
53 51
54configuration::configuration () 52u8 best_protocol (u8 protset)
55{ 53{
56 init (); 54 if (protset & PROT_IPv4 ) return PROT_IPv4;
57} 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;
58 59
59configuration::~configuration () 60 return 0;
60{
61 cleanup ();
62} 61}
63 62
64void configuration::init () 63const char *strprotocol (u8 protocol)
65{ 64{
66 memset (this, 0, sizeof (*this)); 65 if (protocol & PROT_IPv4 ) return "rawip";
66 if (protocol & PROT_ICMPv4) return "icmp";
67 if (protocol & PROT_UDPv4 ) return "udp";
68 if (protocol & PROT_TCPv4 ) return "tcp";
69 if (protocol & PROT_DNSv4 ) return "dns";
67 70
68 rekey = DEFAULT_REKEY; 71 return "<unknown>";
69 keepalive = DEFAULT_KEEPALIVE;
70
71 default_node.port = DEFAULT_PORT;
72 default_node.connectmode = conf_node::C_ALWAYS;
73 default_node.compress = true;
74} 72}
75 73
76void configuration::cleanup() 74static bool
75match_list (const vector<const char *> &list, const char *str)
77{ 76{
78 if (rsa_key) 77 for (vector<const char *>::const_iterator i = list.end (); i-- > list.begin (); )
79 RSA_free (rsa_key); 78 if ((*i)[0] == '*' && !(*i)[1])
79 return true;
80 else if (!strcmp (*i, str))
81 return true;
80 82
81 free (ifname);
82
83 rsa_key = 0;
84 ifname = 0;
85}
86
87void
88configuration::clear_config ()
89{
90 for (configuration::node_vector::iterator i = nodes.begin(); i != nodes.end(); ++i)
91 delete *i;
92
93 nodes.clear ();
94
95 cleanup ();
96 init ();
97}
98
99void configuration::read_config (bool need_keys)
100{
101 char *fname;
102 FILE *f;
103
104 clear_config ();
105
106 asprintf (&fname, "%s/vped.conf", confbase);
107 f = fopen (fname, "r");
108
109 if (f)
110 {
111 char line[16384];
112 int lineno = 0;
113 char *var, *val;
114 conf_node *node = &default_node;
115
116 while (fgets (line, sizeof (line), f))
117 {
118 lineno++;
119
120 {
121 char *end = line + strlen (line);
122
123 while (*end < ' ' && end >= line)
124 end--;
125
126 *++end = 0;
127 }
128
129 char *tok = line;
130
131retry:
132 var = strtok (tok, "\t =");
133 tok = 0;
134
135 if (!var || !var[0])
136 continue; /* no tokens on this line */
137
138 if (var[0] == '#')
139 continue; /* comment: ignore */
140
141 val = strtok (NULL, "\t\n\r =");
142
143 if (!val || val[0] == '#')
144 {
145 slog (L_WARN,
146 _("no value for variable `%s', at '%s' line %d"),
147 var, fname, lineno);
148 break;
149 }
150
151 if (!strcmp (var, "on"))
152 {
153 if (!::thisnode
154 || (val[0] == '!' && strcmp (val + 1, ::thisnode))
155 || !strcmp (val, ::thisnode))
156 goto retry;
157
158 continue;
159 }
160
161 // truly global
162 if (!strcmp (var, "loglevel"))
163 {
164 loglevel l = string_to_loglevel (val);
165
166 if (l != L_NONE)
167 set_loglevel (l);
168 else
169 slog (L_WARN, "'%s': %s, at '%s' line %d", val, UNKNOWN_LOGLEVEL, fname, line);
170 }
171
172 // per config
173 else if (!strcmp (var, "node"))
174 {
175 default_node.id++;
176
177 node = new conf_node (default_node);
178
179 nodes.push_back (node);
180
181 node->nodename = strdup (val);
182
183 {
184 char *fname;
185 FILE *f;
186
187 asprintf (&fname, "%s/pubkey/%s", confbase, node->nodename);
188
189 f = fopen (fname, "r");
190 if (f)
191 {
192 node->rsa_key = RSA_new ();
193
194 if (!PEM_read_RSAPublicKey(f, &node->rsa_key, NULL, NULL))
195 {
196 ERR_load_RSA_strings (); ERR_load_PEM_strings ();
197 slog (L_ERR, _("unable to open public rsa key file '%s': %s"), fname, ERR_error_string (ERR_get_error (), 0));
198 exit (1);
199 }
200
201 RSA_blinding_on (node->rsa_key, 0);
202
203 fclose (f);
204 }
205 else
206 {
207 slog (need_keys ? L_ERR : L_NOTICE, _("unable to read public rsa key file '%s': %s"), fname, strerror (errno));
208
209 if (need_keys)
210 exit (1);
211 }
212
213 free (fname);
214 }
215
216 if (!::thisnode || !strcmp (node->nodename, ::thisnode))
217 thisnode = node;
218 }
219 else if (!strcmp (var, "private-key"))
220 prikeyfile = strdup (val);
221 else if (!strcmp (var, "ifpersist"))
222 {
223 if (!strcmp (val, "yes"))
224 ifpersist = true;
225 else if (!strcmp (val, "no"))
226 ifpersist = false;
227 else
228 slog (L_WARN,
229 _("illegal value for 'ifpersist', only 'yes' or 'no' allowed, at '%s' line %d"),
230 var, fname, lineno);
231 }
232 else if (!strcmp (var, "ifname"))
233 ifname = strdup (val);
234 else if (!strcmp (var, "rekey"))
235 rekey = atoi (val);
236 else if (!strcmp (var, "keepalive"))
237 keepalive = atoi (val);
238 else if (!strcmp (var, "mtu"))
239 mtu = atoi (val);
240 else if (!strcmp (var, "if-up"))
241 script_if_up = strdup (val);
242 else if (!strcmp (var, "node-up"))
243 script_node_up = strdup (val);
244 else if (!strcmp (var, "node-down"))
245 script_node_down = strdup (val);
246
247 /* node-specific, non-defaultable */
248 else if (node != &default_node && !strcmp (var, "hostname"))
249 {
250 free (node->hostname);
251 node->hostname = strdup (val);
252 }
253
254 /* node-specific, defaultable */
255 else if (!strcmp (var, "port"))
256 node->port = atoi (val);
257 else if (!strcmp (var, "router-priority"))
258 node->routerprio = atoi (val);
259 else if (!strcmp (var, "connect"))
260 {
261 if (!strcmp (val, "ondemand"))
262 node->connectmode = conf_node::C_ONDEMAND;
263 else if (!strcmp (val, "never"))
264 node->connectmode = conf_node::C_NEVER;
265 else if (!strcmp (val, "always"))
266 node->connectmode = conf_node::C_ALWAYS;
267 else
268 slog (L_WARN,
269 _("illegal value for 'connectmode', use one of 'ondemand', 'never' or 'always', at '%s' line %d"),
270 var, fname, lineno);
271 }
272 else if (!strcmp (var, "compress"))
273 {
274 if (!strcmp (val, "yes"))
275 node->compress = true;
276 else if (!strcmp (val, "no"))
277 node->compress = false;
278 else
279 slog (L_WARN,
280 _("illegal value for 'compress', only 'yes' or 'no' allowed, at '%s' line %d"),
281 var, fname, lineno);
282 }
283
284 // unknown or misplaced
285 else
286 {
287 slog (L_WARN,
288 _("unknown or misplaced variable `%s', at '%s' line %d"),
289 var, fname, lineno);
290 }
291 }
292
293 fclose (f);
294 }
295 else
296 {
297 slog (L_ERR, _("unable to read config file '%s': %s"), fname, strerror (errno));
298 exit (1);
299 }
300
301 free (fname);
302
303 fname = config_filename (prikeyfile, "hostkey");
304
305 f = fopen (fname, "r");
306 if (f)
307 {
308 rsa_key = RSA_new ();
309
310 if (!PEM_read_RSAPrivateKey (f, &rsa_key, NULL, NULL))
311 {
312 ERR_load_RSA_strings (); ERR_load_PEM_strings ();
313 slog (L_ERR, _("unable to read private rsa key file '%s': %s"), fname, ERR_error_string (ERR_get_error (), 0));
314 exit (1);
315 }
316
317 RSA_blinding_on (rsa_key, 0);
318
319 fclose (f);
320 }
321 else
322 {
323 slog (need_keys ? L_ERR : L_NOTICE, _("unable to open private rsa key file '%s': %s"), fname, strerror (errno));
324
325 if (need_keys)
326 exit (1);
327 }
328
329 free (fname);
330}
331
332char *configuration::config_filename (const char *name, const char *dflt)
333{
334 char *fname;
335
336 asprintf (&fname, name ? name : dflt, ::thisnode);
337
338 if (!ABSOLUTE_PATH (fname))
339 {
340 char *rname = fname;
341 asprintf (&fname, "%s/%s", confbase, rname);
342 free (rname);
343 }
344
345 return fname; 83 return false;
346} 84}
347 85
348void 86bool
349configuration::print () 87conf_node::can_direct (struct conf_node *other)
350{ 88{
351 printf (_("\nConfiguration\n\n")); 89 if (match_list (allow_direct, other->nodename))
352 printf (_("# of nodes: %d\n"), nodes.size ()); 90 return true;
353 printf (_("this node: %s\n"), thisnode ? thisnode->nodename : "<unset>");
354 printf (_("MTU: %d\n"), mtu);
355 printf (_("rekeying interval: %d\n"), rekey);
356 printf (_("keepalive interval: %d\n"), keepalive);
357 printf (_("interface: %s\n"), ifname);
358 printf (_("primary rsa key: %s\n"), prikeyfile ? prikeyfile : "<default>");
359 printf (_("rsa key size: %d\n"), rsa_key ? RSA_size (rsa_key) : -1);
360 printf ("\n");
361 91
362 printf ("%4s %-17s %s %-8.8s %-10.10s %s\n", 92 if (match_list (deny_direct, other->nodename))
363 _("ID#"), _("MAC"), _("Com"), _("Conmode"), _("Node"), _("Host:Port")); 93 return false;
364 94
365 for (node_vector::iterator i = nodes.begin (); i != nodes.end (); ++i) 95 return true;
366 (*i)->print ();
367
368 printf ("\n");
369} 96}
370 97
371void 98void
372conf_node::print () 99conf_node::print ()
373{ 100{
… …
379 connectmode == C_NEVER ? "never" : 106 connectmode == C_NEVER ? "never" :
380 connectmode == C_ALWAYS ? "always" : "", 107 connectmode == C_ALWAYS ? "always" : "",
381 nodename, 108 nodename,
382 hostname ? hostname : "", 109 hostname ? hostname : "",
383 hostname ? ":" : "", 110 hostname ? ":" : "",
384 hostname ? port : 0 111 hostname ? udp_port : 0
385 ); 112 );
386} 113}
387 114
115conf_node::~conf_node ()
116{
117#if 0
118 // does not work, because string pointers etc. are shared
119 // is not called, however
120 if (rsa_key)
121 RSA_free (rsa_key);
122
123 free (nodename);
124 free (hostname);
125 free (if_up_data);
126#if ENABLE_DNS
127 free (domain);
128 free (dns_hostname);
129#endif
130#endif
131}
132
133void configuration::init ()
134{
135 memset (this, 0, sizeof (*this));
136
137 mtu = DEFAULT_MTU;
138 rekey = DEFAULT_REKEY;
139 keepalive = DEFAULT_KEEPALIVE;
140 llevel = L_INFO;
141 ip_proto = IPPROTO_GRE;
142#if ENABLE_ICMP
143 icmp_type = ICMP_ECHOREPLY;
144#endif
145
146 default_node.udp_port = DEFAULT_UDPPORT;
147 default_node.tcp_port = DEFAULT_UDPPORT; // ehrm
148 default_node.connectmode = conf_node::C_ALWAYS;
149 default_node.compress = true;
150 default_node.protocols = 0;
151 default_node.max_retry = DEFAULT_MAX_RETRY;
152 default_node.if_up_data = strdup ("");
153
154#if ENABLE_DNS
155 default_node.dns_port = 0; // default is 0 == client
156
157 dns_forw_host = strdup ("127.0.0.1");
158 dns_forw_port = 53;
159 dns_timeout_factor = DEFAULT_DNS_TIMEOUT_FACTOR;
160 dns_send_interval = DEFAULT_DNS_SEND_INTERVAL;
161 dns_overlap_factor = DEFAULT_DNS_OVERLAP_FACTOR;
162 dns_max_outstanding = DEFAULT_DNS_MAX_OUTSTANDING;
163#endif
164
165 conf.pidfilename = strdup (LOCALSTATEDIR "/run/gvpe.pid");
166}
167
168void configuration::cleanup()
169{
170 if (rsa_key)
171 RSA_free (rsa_key);
172
173 rsa_key = 0;
174
175 free (pidfilename); pidfilename = 0;
176 free (ifname); ifname = 0;
177#if ENABLE_HTTP_PROXY
178 free (proxy_host); proxy_host = 0;
179 free (proxy_auth); proxy_auth = 0;
180#endif
181#if ENABLE_DNS
182 free (dns_forw_host); dns_forw_host = 0;
183#endif
184}
185
186void
187configuration::clear ()
188{
189 for (configuration::node_vector::iterator i = nodes.begin(); i != nodes.end(); ++i)
190 delete *i;
191
192 nodes.clear ();
193
194 cleanup ();
195 init ();
196}
197
198#define parse_bool(target,name,trueval,falseval) do { \
199 if (!strcmp (val, "yes")) target = trueval; \
200 else if (!strcmp (val, "no")) target = falseval; \
201 else if (!strcmp (val, "true")) target = trueval; \
202 else if (!strcmp (val, "false")) target = falseval; \
203 else if (!strcmp (val, "on")) target = trueval; \
204 else if (!strcmp (val, "off")) target = falseval; \
205 else \
206 return _("illegal boolean value, only 'yes|true|on' or 'no|false|off' allowed. (ignored)"); \
207} while (0)
208
209const char *
210configuration_parser::parse_line (char *line)
211{
212 {
213 char *end = line + strlen (line);
214
215 while (*end < ' ' && end >= line)
216 end--;
217
218 *++end = 0;
219 }
220
221 char *tok = line;
222 const char *var = strtok (tok, "\t =");
223 tok = 0;
224
225 if (!var || !var[0])
226 return 0; /* no tokens on this line */
227
228 if (var[0] == '#')
229 return 0; /* comment: ignore */
230
231 char *val = strtok (NULL, "\t\n\r =");
232
233 if (!val || val[0] == '#')
234 return _("no value given for variable. (ignored)");
235
236 if (!strcmp (var, "on"))
237 {
238 if (!::thisnode
239 || (val[0] == '!' && strcmp (val + 1, ::thisnode))
240 || !strcmp (val, ::thisnode))
241 return parse_line (strtok (NULL, "\n\r"));
242 else
243 return 0;
244 }
245
246 // truly global
247 if (!strcmp (var, "loglevel"))
248 {
249 loglevel l = string_to_loglevel (val);
250
251 if (l == L_NONE)
252 return _("unknown loglevel. (skipping)");
253 }
254 else if (!strcmp (var, "ip-proto"))
255 conf.ip_proto = atoi (val);
256 else if (!strcmp (var, "icmp-type"))
257 {
258#if ENABLE_ICMP
259 conf.icmp_type = atoi (val);
260#endif
261 }
262
263 // per config
264 else if (!strcmp (var, "node"))
265 {
266 parse_argv ();
267
268 conf.default_node.id++;
269 node = new conf_node (conf.default_node);
270 conf.nodes.push_back (node);
271 node->nodename = strdup (val);
272
273 {
274 char *fname;
275 FILE *f;
276
277 asprintf (&fname, "%s/pubkey/%s", confbase, node->nodename);
278
279 f = fopen (fname, "r");
280 if (f)
281 {
282 node->rsa_key = RSA_new ();
283
284 if (!PEM_read_RSAPublicKey(f, &node->rsa_key, NULL, NULL))
285 {
286 ERR_load_RSA_strings (); ERR_load_PEM_strings ();
287 slog (L_ERR, _("unable to open public rsa key file '%s': %s"), fname, ERR_error_string (ERR_get_error (), 0));
288 exit (EXIT_FAILURE);
289 }
290
291 require (RSA_blinding_on (node->rsa_key, 0));
292
293 fclose (f);
294 }
295 else
296 {
297 slog (need_keys ? L_ERR : L_NOTICE, _("unable to read public rsa key file '%s': %s"), fname, strerror (errno));
298
299 if (need_keys)
300 exit (EXIT_FAILURE);
301 }
302
303 free (fname);
304 }
305
306 if (::thisnode && !strcmp (node->nodename, ::thisnode))
307 conf.thisnode = node;
308 }
309 else if (!strcmp (var, "private-key"))
310 free (conf.prikeyfile), conf.prikeyfile = strdup (val);
311 else if (!strcmp (var, "ifpersist"))
312 parse_bool (conf.ifpersist, "ifpersist", true, false);
313 else if (!strcmp (var, "ifname"))
314 free (conf.ifname), conf.ifname = strdup (val);
315 else if (!strcmp (var, "rekey"))
316 conf.rekey = atoi (val);
317 else if (!strcmp (var, "keepalive"))
318 conf.keepalive = atoi (val);
319 else if (!strcmp (var, "mtu"))
320 conf.mtu = atoi (val);
321 else if (!strcmp (var, "if-up"))
322 free (conf.script_if_up), conf.script_if_up = strdup (val);
323 else if (!strcmp (var, "node-up"))
324 free (conf.script_node_up), conf.script_node_up = strdup (val);
325 else if (!strcmp (var, "node-down"))
326 free (conf.script_node_down), conf.script_node_down = strdup (val);
327 else if (!strcmp (var, "pid-file"))
328 free (conf.pidfilename), conf.pidfilename = strdup (val);
329 else if (!strcmp (var, "dns-forw-host"))
330 {
331#if ENABLE_DNS
332 free (conf.dns_forw_host), conf.dns_forw_host = strdup (val);
333#endif
334 }
335 else if (!strcmp (var, "dns-forw-port"))
336 {
337#if ENABLE_DNS
338 conf.dns_forw_port = atoi (val);
339#endif
340 }
341 else if (!strcmp (var, "dns-timeout-factor"))
342 {
343#if ENABLE_DNS
344 conf.dns_timeout_factor = atof (val);
345#endif
346 }
347 else if (!strcmp (var, "dns-send-interval"))
348 {
349#if ENABLE_DNS
350 conf.dns_send_interval = atoi (val);
351#endif
352 }
353 else if (!strcmp (var, "dns-overlap-factor"))
354 {
355#if ENABLE_DNS
356 conf.dns_overlap_factor = atof (val);
357#endif
358 }
359 else if (!strcmp (var, "dns-max-outstanding"))
360 {
361#if ENABLE_DNS
362 conf.dns_max_outstanding = atoi (val);
363#endif
364 }
365 else if (!strcmp (var, "http-proxy-host"))
366 {
367#if ENABLE_HTTP_PROXY
368 free (conf.proxy_host), conf.proxy_host = strdup (val);
369#endif
370 }
371 else if (!strcmp (var, "http-proxy-port"))
372 {
373#if ENABLE_HTTP_PROXY
374 conf.proxy_port = atoi (val);
375#endif
376 }
377 else if (!strcmp (var, "http-proxy-auth"))
378 {
379#if ENABLE_HTTP_PROXY
380 conf.proxy_auth = (char *)base64_encode ((const u8 *)val, strlen (val));
381#endif
382 }
383
384 /* node-specific, non-defaultable */
385 else if (node != &conf.default_node && !strcmp (var, "hostname"))
386 free (node->hostname), node->hostname = strdup (val);
387
388 /* node-specific, defaultable */
389 else if (!strcmp (var, "udp-port"))
390 node->udp_port = atoi (val);
391 else if (!strcmp (var, "tcp-port"))
392 node->tcp_port = atoi (val);
393 else if (!strcmp (var, "dns-hostname"))
394 {
395#if ENABLE_DNS
396 free (node->dns_hostname), node->dns_hostname = strdup (val);
397#endif
398 }
399 else if (!strcmp (var, "dns-port"))
400 {
401#if ENABLE_DNS
402 node->dns_port = atoi (val);
403#endif
404 }
405 else if (!strcmp (var, "dns-domain"))
406 {
407#if ENABLE_DNS
408 free (node->domain), node->domain = strdup (val);
409#endif
410 }
411 else if (!strcmp (var, "if-up-data"))
412 free (node->if_up_data), node->if_up_data = strdup (val);
413 else if (!strcmp (var, "router-priority"))
414 node->routerprio = atoi (val);
415 else if (!strcmp (var, "max-retry"))
416 node->max_retry = atoi (val);
417 else if (!strcmp (var, "connect"))
418 {
419 if (!strcmp (val, "ondemand"))
420 node->connectmode = conf_node::C_ONDEMAND;
421 else if (!strcmp (val, "never"))
422 node->connectmode = conf_node::C_NEVER;
423 else if (!strcmp (val, "always"))
424 node->connectmode = conf_node::C_ALWAYS;
425 else if (!strcmp (val, "disabled"))
426 node->connectmode = conf_node::C_DISABLED;
427 else
428 return _("illegal value for 'connectmode', use one of 'ondemand', 'never', 'always' or 'disabled'. (ignored)");
429 }
430 else if (!strcmp (var, "inherit-tos"))
431 parse_bool (node->inherit_tos, "inherit-tos", true, false);
432 else if (!strcmp (var, "compress"))
433 parse_bool (node->compress, "compress", true, false);
434 // all these bool options really really cost a lot of executable size!
435 else if (!strcmp (var, "enable-tcp"))
436 {
437#if ENABLE_TCP
438 u8 v; parse_bool (v, "enable-tcp" , PROT_TCPv4, 0); node->protocols = (node->protocols & ~PROT_TCPv4) | v;
439#endif
440 }
441 else if (!strcmp (var, "enable-icmp"))
442 {
443#if ENABLE_ICMP
444 u8 v; parse_bool (v, "enable-icmp" , PROT_ICMPv4, 0); node->protocols = (node->protocols & ~PROT_ICMPv4) | v;
445#endif
446 }
447 else if (!strcmp (var, "enable-dns"))
448 {
449#if ENABLE_DNS
450 u8 v; parse_bool (v, "enable-dns" , PROT_DNSv4, 0); node->protocols = (node->protocols & ~PROT_DNSv4) | v;
451#endif
452 }
453 else if (!strcmp (var, "enable-udp"))
454 {
455 u8 v; parse_bool (v, "enable-udp" , PROT_UDPv4, 0); node->protocols = (node->protocols & ~PROT_UDPv4) | v;
456 }
457 else if (!strcmp (var, "enable-rawip"))
458 {
459 u8 v; parse_bool (v, "enable-rawip", PROT_IPv4, 0); node->protocols = (node->protocols & ~PROT_IPv4 ) | v;
460 }
461 else if (!strcmp (var, "allow-direct"))
462 node->allow_direct.push_back (strdup (val));
463 else if (!strcmp (var, "deny-direct"))
464 node->deny_direct.push_back (strdup (val));
465
466 // unknown or misplaced
467 else
468 return _("unknown configuration directive. (ignored)");
469
470 return 0;
471}
472
473void configuration_parser::parse_argv ()
474{
475 for (int i = 0; i < argc; ++i)
476 {
477 char *v = argv [i];
478
479 if (!*v)
480 continue;
481
482 char *enode = v;
483
484 while (*enode != '.' && *enode > ' ' && *enode != '=' && *enode)
485 enode++;
486
487 if (*enode != '.')
488 enode = 0;
489
490 char *wnode = node == &conf.default_node
491 ? 0
492 : node->nodename;
493
494 if ((!wnode && !enode)
495 || (wnode && enode && !strncmp (wnode, v, enode - v)))
496 {
497 const char *warn = parse_line (enode ? enode + 1 : v);
498
499 if (warn)
500 slog (L_WARN, _("%s, while parsing command line option '%s'."), warn, v);
501
502 *v = 0;
503 }
504 }
505}
506
507configuration_parser::configuration_parser (configuration &conf,
508 bool need_keys,
509 int argc,
510 char **argv)
511: conf (conf),need_keys (need_keys), argc (argc), argv (argv)
512{
513 char *fname;
514 FILE *f;
515
516 conf.clear ();
517
518 asprintf (&fname, "%s/gvpe.conf", confbase);
519 f = fopen (fname, "r");
520
521 if (f)
522 {
523 char line[16384];
524 int lineno = 0;
525 node = &conf.default_node;
526
527 while (fgets (line, sizeof (line), f))
528 {
529 lineno++;
530
531 const char *warn = parse_line (line);
532
533 if (warn)
534 slog (L_WARN, _("%s, at '%s', line %d."), warn, fname, lineno);
535 }
536
537 fclose (f);
538
539 parse_argv ();
540 }
541 else
542 {
543 slog (L_ERR, _("unable to read config file '%s': %s"), fname, strerror (errno));
544 exit (EXIT_FAILURE);
545 }
546
547 free (fname);
548
549 fname = conf.config_filename (conf.prikeyfile, "hostkey");
550
551 f = fopen (fname, "r");
552 if (f)
553 {
554 conf.rsa_key = RSA_new ();
555
556 if (!PEM_read_RSAPrivateKey (f, &conf.rsa_key, NULL, NULL))
557 {
558 ERR_load_RSA_strings (); ERR_load_PEM_strings ();
559 slog (L_ERR, _("unable to read private rsa key file '%s': %s"), fname, ERR_error_string (ERR_get_error (), 0));
560 exit (EXIT_FAILURE);
561 }
562
563 require (RSA_blinding_on (conf.rsa_key, 0));
564
565 fclose (f);
566 }
567 else
568 {
569 slog (need_keys ? L_ERR : L_NOTICE, _("unable to open private rsa key file '%s': %s"), fname, strerror (errno));
570
571 if (need_keys)
572 exit (EXIT_FAILURE);
573 }
574
575 if (need_keys && ::thisnode
576 && conf.rsa_key && conf.thisnode && conf.thisnode->rsa_key)
577 if (BN_cmp (conf.rsa_key->n, conf.thisnode->rsa_key->n) != 0
578 || BN_cmp (conf.rsa_key->e, conf.thisnode->rsa_key->e) != 0)
579 {
580 slog (L_NOTICE, _("private hostkey and public node key mismatch: is '%s' the correct node?"), ::thisnode);
581 exit (EXIT_FAILURE);
582 }
583
584 free (fname);
585}
586
587char *configuration::config_filename (const char *name, const char *dflt)
588{
589 char *fname;
590
591 asprintf (&fname, name ? name : dflt, ::thisnode);
592
593 if (!ABSOLUTE_PATH (fname))
594 {
595 char *rname = fname;
596 asprintf (&fname, "%s/%s", confbase, rname);
597 free (rname);
598 }
599
600 return fname;
601}
602
603void
604configuration::print ()
605{
606 printf (_("\nConfiguration\n\n"));
607 printf (_("# of nodes: %d\n"), nodes.size ());
608 printf (_("this node: %s\n"), thisnode ? thisnode->nodename : "<unset>");
609 printf (_("MTU: %d\n"), mtu);
610 printf (_("rekeying interval: %d\n"), rekey);
611 printf (_("keepalive interval: %d\n"), keepalive);
612 printf (_("interface: %s\n"), ifname);
613 printf (_("primary rsa key: %s\n"), prikeyfile ? prikeyfile : "<default>");
614 printf (_("rsa key size: %d\n"), rsa_key ? RSA_size (rsa_key) * 8 : -1);
615 printf ("\n");
616
617 printf ("%4s %-17s %s %-8.8s %-10.10s %s\n",
618 _("ID#"), _("MAC"), _("Com"), _("Conmode"), _("Node"), _("Host:Port"));
619
620 for (node_vector::iterator i = nodes.begin (); i != nodes.end (); ++i)
621 (*i)->print ();
622
623 printf ("\n");
624}
625
626configuration::configuration ()
627{
628 asprintf (&confbase, "%s/gvpe", CONFDIR);
629
630 init ();
631}
632
633configuration::~configuration ()
634{
635 cleanup ();
636}
637
638

Diff Legend

– Removed lines
+ Added lines
< Changed lines
> Changed lines