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Comparing gvpe/src/conf.C (file contents):
Revision 1.6 by pcg, Fri Mar 28 16:14:40 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
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
56configuration::configuration () 52u8 best_protocol (u8 protset)
57{ 53{
58 init (); 54 if (protset & PROT_IPv4 ) return PROT_IPv4;
59} 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
61configuration::~configuration () 60 return 0;
62{
63 cleanup ();
64} 61}
65 62
66void configuration::init () 63const char *strprotocol (u8 protocol)
67{ 64{
68 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";
69 70
70 rekey = DEFAULT_REKEY; 71 return "<unknown>";
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.protocols = PROT_UDPv4;
79} 72}
80 73
81void configuration::cleanup() 74static bool
75match_list (const vector<const char *> &list, const char *str)
82{ 76{
83 if (rsa_key) 77 for (vector<const char *>::const_iterator i = list.end (); i-- > list.begin (); )
84 RSA_free (rsa_key); 78 if ((*i)[0] == '*' && !(*i)[1])
79 return true;
80 else if (!strcmp (*i, str))
81 return true;
85 82
86 free (ifname);
87
88 rsa_key = 0;
89 ifname = 0;
90}
91
92void
93configuration::clear_config ()
94{
95 for (configuration::node_vector::iterator i = nodes.begin(); i != nodes.end(); ++i)
96 delete *i;
97
98 nodes.clear ();
99
100 cleanup ();
101 init ();
102}
103
104#define parse_bool(target,name,trueval,falseval) \
105 if (!strcmp (val, "yes")) target = trueval; \
106 else if (!strcmp (val, "no")) target = falseval; \
107 else if (!strcmp (val, "true")) target = trueval; \
108 else if (!strcmp (val, "false")) target = falseval; \
109 else if (!strcmp (val, "on")) target = trueval; \
110 else if (!strcmp (val, "off")) target = falseval; \
111 else \
112 slog (L_WARN, \
113 _("illegal value for '%s', only 'yes|true|on' or 'no|false|off' allowed, at '%s' line %d"), \
114 name, var, fname, lineno);
115
116void configuration::read_config (bool need_keys)
117{
118 char *fname;
119 FILE *f;
120
121 clear_config ();
122
123 asprintf (&fname, "%s/vped.conf", confbase);
124 f = fopen (fname, "r");
125
126 if (f)
127 {
128 char line[16384];
129 int lineno = 0;
130 char *var, *val;
131 conf_node *node = &default_node;
132
133 while (fgets (line, sizeof (line), f))
134 {
135 lineno++;
136
137 {
138 char *end = line + strlen (line);
139
140 while (*end < ' ' && end >= line)
141 end--;
142
143 *++end = 0;
144 }
145
146 char *tok = line;
147
148retry:
149 var = strtok (tok, "\t =");
150 tok = 0;
151
152 if (!var || !var[0])
153 continue; /* no tokens on this line */
154
155 if (var[0] == '#')
156 continue; /* comment: ignore */
157
158 val = strtok (NULL, "\t\n\r =");
159
160 if (!val || val[0] == '#')
161 {
162 slog (L_WARN,
163 _("no value for variable `%s', at '%s' line %d"),
164 var, fname, lineno);
165 break;
166 }
167
168 if (!strcmp (var, "on"))
169 {
170 if (!::thisnode
171 || (val[0] == '!' && strcmp (val + 1, ::thisnode))
172 || !strcmp (val, ::thisnode))
173 goto retry;
174
175 continue;
176 }
177
178 // truly global
179 if (!strcmp (var, "loglevel"))
180 {
181 loglevel l = string_to_loglevel (val);
182
183 if (l != L_NONE)
184 llevel = l;
185 else
186 slog (L_WARN, "'%s': %s, at '%s' line %d", val, UNKNOWN_LOGLEVEL, fname, line);
187 }
188 else if (!strcmp (var, "ip-proto"))
189 ip_proto = atoi (val);
190
191 // per config
192 else if (!strcmp (var, "node"))
193 {
194 default_node.id++;
195
196 node = new conf_node (default_node);
197
198 nodes.push_back (node);
199
200 node->nodename = strdup (val);
201
202 {
203 char *fname;
204 FILE *f;
205
206 asprintf (&fname, "%s/pubkey/%s", confbase, node->nodename);
207
208 f = fopen (fname, "r");
209 if (f)
210 {
211 node->rsa_key = RSA_new ();
212
213 if (!PEM_read_RSAPublicKey(f, &node->rsa_key, NULL, NULL))
214 {
215 ERR_load_RSA_strings (); ERR_load_PEM_strings ();
216 slog (L_ERR, _("unable to open public rsa key file '%s': %s"), fname, ERR_error_string (ERR_get_error (), 0));
217 exit (1);
218 }
219
220 RSA_blinding_on (node->rsa_key, 0);
221
222 fclose (f);
223 }
224 else
225 {
226 slog (need_keys ? L_ERR : L_NOTICE, _("unable to read public rsa key file '%s': %s"), fname, strerror (errno));
227
228 if (need_keys)
229 exit (1);
230 }
231
232 free (fname);
233 }
234
235 if (!::thisnode || !strcmp (node->nodename, ::thisnode))
236 thisnode = node;
237 }
238 else if (!strcmp (var, "private-key"))
239 prikeyfile = strdup (val);
240 else if (!strcmp (var, "ifpersist"))
241 {
242 parse_bool (ifpersist, "ifpersist", true, false);
243 }
244 else if (!strcmp (var, "ifname"))
245 ifname = strdup (val);
246 else if (!strcmp (var, "rekey"))
247 rekey = atoi (val);
248 else if (!strcmp (var, "keepalive"))
249 keepalive = atoi (val);
250 else if (!strcmp (var, "mtu"))
251 mtu = atoi (val);
252 else if (!strcmp (var, "if-up"))
253 script_if_up = strdup (val);
254 else if (!strcmp (var, "node-up"))
255 script_node_up = strdup (val);
256 else if (!strcmp (var, "node-down"))
257 script_node_down = strdup (val);
258
259 /* node-specific, non-defaultable */
260 else if (node != &default_node && !strcmp (var, "hostname"))
261 {
262 free (node->hostname);
263 node->hostname = strdup (val);
264 }
265
266 /* node-specific, defaultable */
267 else if (!strcmp (var, "udp-port"))
268 node->udp_port = atoi (val);
269 else if (!strcmp (var, "router-priority"))
270 node->routerprio = atoi (val);
271 else if (!strcmp (var, "connect"))
272 {
273 if (!strcmp (val, "ondemand"))
274 node->connectmode = conf_node::C_ONDEMAND;
275 else if (!strcmp (val, "never"))
276 node->connectmode = conf_node::C_NEVER;
277 else if (!strcmp (val, "always"))
278 node->connectmode = conf_node::C_ALWAYS;
279 else if (!strcmp (val, "disabled"))
280 node->connectmode = conf_node::C_DISABLED;
281 else
282 slog (L_WARN,
283 _("illegal value for 'connectmode', use one of 'ondemand', 'never', 'always' or 'disabled', at '%s' line %d"),
284 var, fname, lineno);
285 }
286 else if (!strcmp (var, "inherit-tos"))
287 {
288 parse_bool (node->inherit_tos, "inherit-tos", true, false);
289 }
290 else if (!strcmp (var, "compress"))
291 {
292 parse_bool (node->compress, "compress", true, false);
293 }
294 // all these bool options really really cost a lot of executable size!
295 else if (!strcmp (var, "enable-udp"))
296 {
297 u8 v; parse_bool (v, "enable-udp" , PROT_UDPv4, 0); node->protocols = (node->protocols & ~PROT_UDPv4) | v;
298 }
299 else if (!strcmp (var, "enable-rawip"))
300 {
301 u8 v; parse_bool (v, "enable-rawip", PROT_IPv4, 0); node->protocols = (node->protocols & ~PROT_IPv4 ) | v;
302 }
303
304 // unknown or misplaced
305 else
306 {
307 slog (L_WARN,
308 _("unknown or misplaced variable `%s', at '%s' line %d"),
309 var, fname, lineno);
310 }
311 }
312
313 fclose (f);
314 }
315 else
316 {
317 slog (L_ERR, _("unable to read config file '%s': %s"), fname, strerror (errno));
318 exit (1);
319 }
320
321 free (fname);
322
323 fname = config_filename (prikeyfile, "hostkey");
324
325 f = fopen (fname, "r");
326 if (f)
327 {
328 rsa_key = RSA_new ();
329
330 if (!PEM_read_RSAPrivateKey (f, &rsa_key, NULL, NULL))
331 {
332 ERR_load_RSA_strings (); ERR_load_PEM_strings ();
333 slog (L_ERR, _("unable to read private rsa key file '%s': %s"), fname, ERR_error_string (ERR_get_error (), 0));
334 exit (1);
335 }
336
337 RSA_blinding_on (rsa_key, 0);
338
339 fclose (f);
340 }
341 else
342 {
343 slog (need_keys ? L_ERR : L_NOTICE, _("unable to open private rsa key file '%s': %s"), fname, strerror (errno));
344
345 if (need_keys)
346 exit (1);
347 }
348
349 free (fname);
350}
351
352char *configuration::config_filename (const char *name, const char *dflt)
353{
354 char *fname;
355
356 asprintf (&fname, name ? name : dflt, ::thisnode);
357
358 if (!ABSOLUTE_PATH (fname))
359 {
360 char *rname = fname;
361 asprintf (&fname, "%s/%s", confbase, rname);
362 free (rname);
363 }
364
365 return fname; 83 return false;
366} 84}
367 85
368void 86bool
369configuration::print () 87conf_node::can_direct (struct conf_node *other)
370{ 88{
371 printf (_("\nConfiguration\n\n")); 89 if (match_list (allow_direct, other->nodename))
372 printf (_("# of nodes: %d\n"), nodes.size ()); 90 return true;
373 printf (_("this node: %s\n"), thisnode ? thisnode->nodename : "<unset>");
374 printf (_("MTU: %d\n"), mtu);
375 printf (_("rekeying interval: %d\n"), rekey);
376 printf (_("keepalive interval: %d\n"), keepalive);
377 printf (_("interface: %s\n"), ifname);
378 printf (_("primary rsa key: %s\n"), prikeyfile ? prikeyfile : "<default>");
379 printf (_("rsa key size: %d\n"), rsa_key ? RSA_size (rsa_key) : -1);
380 printf ("\n");
381 91
382 printf ("%4s %-17s %s %-8.8s %-10.10s %s\n", 92 if (match_list (deny_direct, other->nodename))
383 _("ID#"), _("MAC"), _("Com"), _("Conmode"), _("Node"), _("Host:Port")); 93 return false;
384 94
385 for (node_vector::iterator i = nodes.begin (); i != nodes.end (); ++i) 95 return true;
386 (*i)->print ();
387
388 printf ("\n");
389} 96}
390 97
391void 98void
392conf_node::print () 99conf_node::print ()
393{ 100{
… …
403 hostname ? ":" : "", 110 hostname ? ":" : "",
404 hostname ? udp_port : 0 111 hostname ? udp_port : 0
405 ); 112 );
406} 113}
407 114
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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