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Comparing gvpe/src/conf.C (file contents):
Revision 1.1 by pcg, Sat Mar 1 15:53:03 2003 UTC vs.
Revision 1.43 by pcg, Thu Aug 7 16:34:21 2008 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.max_ttl = DEFAULT_MAX_TTL;
153 default_node.max_queue = DEFAULT_MAX_QUEUE;
154 default_node.if_up_data = strdup ("");
155
156#if ENABLE_DNS
157 default_node.dns_port = 0; // default is 0 == client
158
159 dns_forw_host = strdup ("127.0.0.1");
160 dns_forw_port = 53;
161 dns_timeout_factor = DEFAULT_DNS_TIMEOUT_FACTOR;
162 dns_send_interval = DEFAULT_DNS_SEND_INTERVAL;
163 dns_overlap_factor = DEFAULT_DNS_OVERLAP_FACTOR;
164 dns_max_outstanding = DEFAULT_DNS_MAX_OUTSTANDING;
165#endif
166
167 conf.pidfilename = strdup (LOCALSTATEDIR "/run/gvpe.pid");
168}
169
170void configuration::cleanup()
171{
172 if (rsa_key)
173 RSA_free (rsa_key);
174
175 rsa_key = 0;
176
177 free (pidfilename); pidfilename = 0;
178 free (ifname); ifname = 0;
179#if ENABLE_HTTP_PROXY
180 free (proxy_host); proxy_host = 0;
181 free (proxy_auth); proxy_auth = 0;
182#endif
183#if ENABLE_DNS
184 free (dns_forw_host); dns_forw_host = 0;
185#endif
186}
187
188void
189configuration::clear ()
190{
191 for (configuration::node_vector::iterator i = nodes.begin(); i != nodes.end(); ++i)
192 delete *i;
193
194 nodes.clear ();
195
196 cleanup ();
197 init ();
198}
199
200#define parse_bool(target,name,trueval,falseval) do { \
201 if (!strcmp (val, "yes")) target = trueval; \
202 else if (!strcmp (val, "no")) target = falseval; \
203 else if (!strcmp (val, "true")) target = trueval; \
204 else if (!strcmp (val, "false")) target = falseval; \
205 else if (!strcmp (val, "on")) target = trueval; \
206 else if (!strcmp (val, "off")) target = falseval; \
207 else \
208 return _("illegal boolean value, only 'yes|true|on' or 'no|false|off' allowed. (ignored)"); \
209} while (0)
210
211const char *
212configuration_parser::parse_line (char *line)
213{
214 {
215 char *end = line + strlen (line);
216
217 while (*end < ' ' && end >= line)
218 end--;
219
220 *++end = 0;
221 }
222
223 char *tok = line;
224 const char *var = strtok (tok, "\t =");
225 tok = 0;
226
227 if (!var || !var[0])
228 return 0; /* no tokens on this line */
229
230 if (var[0] == '#')
231 return 0; /* comment: ignore */
232
233 char *val = strtok (NULL, "\t\n\r =");
234
235 if (!val || val[0] == '#')
236 return _("no value given for variable. (ignored)");
237
238 if (!strcmp (var, "on"))
239 {
240 if (!::thisnode
241 || (val[0] == '!' && strcmp (val + 1, ::thisnode))
242 || !strcmp (val, ::thisnode))
243 return parse_line (strtok (NULL, "\n\r"));
244 else
245 return 0;
246 }
247
248 // truly global
249 if (!strcmp (var, "loglevel"))
250 {
251 loglevel l = string_to_loglevel (val);
252
253 if (l == L_NONE)
254 return _("unknown loglevel. (skipping)");
255 }
256 else if (!strcmp (var, "ip-proto"))
257 conf.ip_proto = atoi (val);
258 else if (!strcmp (var, "icmp-type"))
259 {
260#if ENABLE_ICMP
261 conf.icmp_type = atoi (val);
262#endif
263 }
264
265 // per config
266 else if (!strcmp (var, "node"))
267 {
268 parse_argv ();
269
270 conf.default_node.id++;
271 node = new conf_node (conf.default_node);
272 conf.nodes.push_back (node);
273 node->nodename = strdup (val);
274
275 {
276 char *fname;
277 FILE *f;
278
279 asprintf (&fname, "%s/pubkey/%s", confbase, node->nodename);
280
281 f = fopen (fname, "r");
282 if (f)
283 {
284 node->rsa_key = RSA_new ();
285
286 if (!PEM_read_RSAPublicKey(f, &node->rsa_key, NULL, NULL))
287 {
288 ERR_load_RSA_strings (); ERR_load_PEM_strings ();
289 slog (L_ERR, _("unable to open public rsa key file '%s': %s"), fname, ERR_error_string (ERR_get_error (), 0));
290 exit (EXIT_FAILURE);
291 }
292
293 require (RSA_blinding_on (node->rsa_key, 0));
294
295 fclose (f);
296 }
297 else
298 {
299 slog (need_keys ? L_ERR : L_NOTICE, _("unable to read public rsa key file '%s': %s"), fname, strerror (errno));
300
301 if (need_keys)
302 exit (EXIT_FAILURE);
303 }
304
305 free (fname);
306 }
307
308 if (::thisnode && !strcmp (node->nodename, ::thisnode))
309 conf.thisnode = node;
310 }
311 else if (!strcmp (var, "private-key"))
312 free (conf.prikeyfile), conf.prikeyfile = strdup (val);
313 else if (!strcmp (var, "ifpersist"))
314 parse_bool (conf.ifpersist, "ifpersist", true, false);
315 else if (!strcmp (var, "ifname"))
316 free (conf.ifname), conf.ifname = strdup (val);
317 else if (!strcmp (var, "rekey"))
318 conf.rekey = atoi (val);
319 else if (!strcmp (var, "keepalive"))
320 conf.keepalive = atoi (val);
321 else if (!strcmp (var, "mtu"))
322 conf.mtu = atoi (val);
323 else if (!strcmp (var, "if-up"))
324 free (conf.script_if_up), conf.script_if_up = strdup (val);
325 else if (!strcmp (var, "node-up"))
326 free (conf.script_node_up), conf.script_node_up = strdup (val);
327 else if (!strcmp (var, "node-down"))
328 free (conf.script_node_down), conf.script_node_down = strdup (val);
329 else if (!strcmp (var, "pid-file"))
330 free (conf.pidfilename), conf.pidfilename = strdup (val);
331 else if (!strcmp (var, "dns-forw-host"))
332 {
333#if ENABLE_DNS
334 free (conf.dns_forw_host), conf.dns_forw_host = strdup (val);
335#endif
336 }
337 else if (!strcmp (var, "dns-forw-port"))
338 {
339#if ENABLE_DNS
340 conf.dns_forw_port = atoi (val);
341#endif
342 }
343 else if (!strcmp (var, "dns-timeout-factor"))
344 {
345#if ENABLE_DNS
346 conf.dns_timeout_factor = atof (val);
347#endif
348 }
349 else if (!strcmp (var, "dns-send-interval"))
350 {
351#if ENABLE_DNS
352 conf.dns_send_interval = atoi (val);
353#endif
354 }
355 else if (!strcmp (var, "dns-overlap-factor"))
356 {
357#if ENABLE_DNS
358 conf.dns_overlap_factor = atof (val);
359#endif
360 }
361 else if (!strcmp (var, "dns-max-outstanding"))
362 {
363#if ENABLE_DNS
364 conf.dns_max_outstanding = atoi (val);
365#endif
366 }
367 else if (!strcmp (var, "http-proxy-host"))
368 {
369#if ENABLE_HTTP_PROXY
370 free (conf.proxy_host), conf.proxy_host = strdup (val);
371#endif
372 }
373 else if (!strcmp (var, "http-proxy-port"))
374 {
375#if ENABLE_HTTP_PROXY
376 conf.proxy_port = atoi (val);
377#endif
378 }
379 else if (!strcmp (var, "http-proxy-auth"))
380 {
381#if ENABLE_HTTP_PROXY
382 conf.proxy_auth = (char *)base64_encode ((const u8 *)val, strlen (val));
383#endif
384 }
385
386 /* node-specific, non-defaultable */
387 else if (node != &conf.default_node && !strcmp (var, "hostname"))
388 free (node->hostname), node->hostname = strdup (val);
389
390 /* node-specific, defaultable */
391 else if (!strcmp (var, "udp-port"))
392 node->udp_port = atoi (val);
393 else if (!strcmp (var, "tcp-port"))
394 node->tcp_port = atoi (val);
395 else if (!strcmp (var, "dns-hostname"))
396 {
397#if ENABLE_DNS
398 free (node->dns_hostname), node->dns_hostname = strdup (val);
399#endif
400 }
401 else if (!strcmp (var, "dns-port"))
402 {
403#if ENABLE_DNS
404 node->dns_port = atoi (val);
405#endif
406 }
407 else if (!strcmp (var, "dns-domain"))
408 {
409#if ENABLE_DNS
410 free (node->domain), node->domain = strdup (val);
411#endif
412 }
413 else if (!strcmp (var, "if-up-data"))
414 free (node->if_up_data), node->if_up_data = strdup (val);
415 else if (!strcmp (var, "router-priority"))
416 node->routerprio = atoi (val);
417 else if (!strcmp (var, "max-retry"))
418 node->max_retry = atoi (val);
419 else if (!strcmp (var, "connect"))
420 {
421 if (!strcmp (val, "ondemand"))
422 node->connectmode = conf_node::C_ONDEMAND;
423 else if (!strcmp (val, "never"))
424 node->connectmode = conf_node::C_NEVER;
425 else if (!strcmp (val, "always"))
426 node->connectmode = conf_node::C_ALWAYS;
427 else if (!strcmp (val, "disabled"))
428 node->connectmode = conf_node::C_DISABLED;
429 else
430 return _("illegal value for 'connectmode', use one of 'ondemand', 'never', 'always' or 'disabled'. (ignored)");
431 }
432 else if (!strcmp (var, "inherit-tos"))
433 parse_bool (node->inherit_tos, "inherit-tos", true, false);
434 else if (!strcmp (var, "compress"))
435 parse_bool (node->compress, "compress", true, false);
436 // all these bool options really really cost a lot of executable size!
437 else if (!strcmp (var, "enable-tcp"))
438 {
439#if ENABLE_TCP
440 u8 v; parse_bool (v, "enable-tcp" , PROT_TCPv4, 0); node->protocols = (node->protocols & ~PROT_TCPv4) | v;
441#endif
442 }
443 else if (!strcmp (var, "enable-icmp"))
444 {
445#if ENABLE_ICMP
446 u8 v; parse_bool (v, "enable-icmp" , PROT_ICMPv4, 0); node->protocols = (node->protocols & ~PROT_ICMPv4) | v;
447#endif
448 }
449 else if (!strcmp (var, "enable-dns"))
450 {
451#if ENABLE_DNS
452 u8 v; parse_bool (v, "enable-dns" , PROT_DNSv4, 0); node->protocols = (node->protocols & ~PROT_DNSv4) | v;
453#endif
454 }
455 else if (!strcmp (var, "enable-udp"))
456 {
457 u8 v; parse_bool (v, "enable-udp" , PROT_UDPv4, 0); node->protocols = (node->protocols & ~PROT_UDPv4) | v;
458 }
459 else if (!strcmp (var, "enable-rawip"))
460 {
461 u8 v; parse_bool (v, "enable-rawip", PROT_IPv4, 0); node->protocols = (node->protocols & ~PROT_IPv4 ) | v;
462 }
463 else if (!strcmp (var, "allow-direct"))
464 node->allow_direct.push_back (strdup (val));
465 else if (!strcmp (var, "deny-direct"))
466 node->deny_direct.push_back (strdup (val));
467 else if (!strcmp (var, "max-ttl"))
468 node->max_ttl = atof (val);
469 else if (!strcmp (var, "max-queue"))
470 node->max_queue = atoi (val);
471
472 // unknown or misplaced
473 else
474 return _("unknown configuration directive. (ignored)");
475
476 return 0;
477}
478
479void configuration_parser::parse_argv ()
480{
481 for (int i = 0; i < argc; ++i)
482 {
483 char *v = argv [i];
484
485 if (!*v)
486 continue;
487
488 char *enode = v;
489
490 while (*enode != '.' && *enode > ' ' && *enode != '=' && *enode)
491 enode++;
492
493 if (*enode != '.')
494 enode = 0;
495
496 char *wnode = node == &conf.default_node
497 ? 0
498 : node->nodename;
499
500 if ((!wnode && !enode)
501 || (wnode && enode && !strncmp (wnode, v, enode - v)))
502 {
503 const char *warn = parse_line (enode ? enode + 1 : v);
504
505 if (warn)
506 slog (L_WARN, _("%s, while parsing command line option '%s'."), warn, v);
507
508 *v = 0;
509 }
510 }
511}
512
513configuration_parser::configuration_parser (configuration &conf,
514 bool need_keys,
515 int argc,
516 char **argv)
517: conf (conf),need_keys (need_keys), argc (argc), argv (argv)
518{
519 char *fname;
520 FILE *f;
521
522 conf.clear ();
523
524 asprintf (&fname, "%s/gvpe.conf", confbase);
525 f = fopen (fname, "r");
526
527 if (f)
528 {
529 char line[16384];
530 int lineno = 0;
531 node = &conf.default_node;
532
533 while (fgets (line, sizeof (line), f))
534 {
535 lineno++;
536
537 const char *warn = parse_line (line);
538
539 if (warn)
540 slog (L_WARN, _("%s, at '%s', line %d."), warn, fname, lineno);
541 }
542
543 fclose (f);
544
545 parse_argv ();
546 }
547 else
548 {
549 slog (L_ERR, _("unable to read config file '%s': %s"), fname, strerror (errno));
550 exit (EXIT_FAILURE);
551 }
552
553 free (fname);
554
555 fname = conf.config_filename (conf.prikeyfile, "hostkey");
556
557 f = fopen (fname, "r");
558 if (f)
559 {
560 conf.rsa_key = RSA_new ();
561
562 if (!PEM_read_RSAPrivateKey (f, &conf.rsa_key, NULL, NULL))
563 {
564 ERR_load_RSA_strings (); ERR_load_PEM_strings ();
565 slog (L_ERR, _("unable to read private rsa key file '%s': %s"), fname, ERR_error_string (ERR_get_error (), 0));
566 exit (EXIT_FAILURE);
567 }
568
569 require (RSA_blinding_on (conf.rsa_key, 0));
570
571 fclose (f);
572 }
573 else
574 {
575 slog (need_keys ? L_ERR : L_NOTICE, _("unable to open private rsa key file '%s': %s"), fname, strerror (errno));
576
577 if (need_keys)
578 exit (EXIT_FAILURE);
579 }
580
581 if (need_keys && ::thisnode
582 && conf.rsa_key && conf.thisnode && conf.thisnode->rsa_key)
583 if (BN_cmp (conf.rsa_key->n, conf.thisnode->rsa_key->n) != 0
584 || BN_cmp (conf.rsa_key->e, conf.thisnode->rsa_key->e) != 0)
585 {
586 slog (L_NOTICE, _("private hostkey and public node key mismatch: is '%s' the correct node?"), ::thisnode);
587 exit (EXIT_FAILURE);
588 }
589
590 free (fname);
591}
592
593char *configuration::config_filename (const char *name, const char *dflt)
594{
595 char *fname;
596
597 asprintf (&fname, name ? name : dflt, ::thisnode);
598
599 if (!ABSOLUTE_PATH (fname))
600 {
601 char *rname = fname;
602 asprintf (&fname, "%s/%s", confbase, rname);
603 free (rname);
604 }
605
606 return fname;
607}
608
609void
610configuration::print ()
611{
612 printf (_("\nConfiguration\n\n"));
613 printf (_("# of nodes: %d\n"), nodes.size ());
614 printf (_("this node: %s\n"), thisnode ? thisnode->nodename : "<unset>");
615 printf (_("MTU: %d\n"), mtu);
616 printf (_("rekeying interval: %d\n"), rekey);
617 printf (_("keepalive interval: %d\n"), keepalive);
618 printf (_("interface: %s\n"), ifname);
619 printf (_("primary rsa key: %s\n"), prikeyfile ? prikeyfile : "<default>");
620 printf (_("rsa key size: %d\n"), rsa_key ? RSA_size (rsa_key) * 8 : -1);
621 printf ("\n");
622
623 printf ("%4s %-17s %s %-8.8s %-10.10s %s\n",
624 _("ID#"), _("MAC"), _("Com"), _("Conmode"), _("Node"), _("Host:Port"));
625
626 for (node_vector::iterator i = nodes.begin (); i != nodes.end (); ++i)
627 (*i)->print ();
628
629 printf ("\n");
630}
631
632configuration::configuration ()
633{
634 asprintf (&confbase, "%s/gvpe", CONFDIR);
635
636 init ();
637}
638
639configuration::~configuration ()
640{
641 cleanup ();
642}
643
644

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