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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 1.64 by root, Thu Jul 18 17:35:10 2013 UTC

1/* 1/*
2 conf.c -- configuration code 2 conf.C -- configuration code
3 Copyright (C) 1998 Robert van der Meulen 3 Copyright (C) 2003-2008,2011 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 it
10 it under the terms of the GNU General Public License as published by 8 under the terms of the GNU General Public License as published by the
11 the Free Software Foundation; either version 2 of the License, or 9 Free Software Foundation; either version 3 of the License, or (at your
12 (at your option) any later version. 10 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, but
15 but WITHOUT ANY WARRANTY; without even the implied warranty of 13 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 GNU General
17 GNU General Public License for more details. 15 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 along
20 along with this program; if not, write to the Free Software 18 with this program; if not, see <http://www.gnu.org/licenses/>.
21 Foundation, Inc. 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA 19
20 Additional permission under GNU GPL version 3 section 7
21
22 If you modify this Program, or any covered work, by linking or
23 combining it with the OpenSSL project's OpenSSL library (or a modified
24 version of that library), containing parts covered by the terms of the
25 OpenSSL or SSLeay licenses, the licensors of this Program grant you
26 additional permission to convey the resulting work. Corresponding
27 Source for a non-source form of such a combination shall include the
28 source code for the parts of OpenSSL used as well as that of the
29 covered work.
22*/ 30*/
23 31
24#include "config.h" 32#include "config.h"
25 33
26#include <cstdio> 34#include <cstdio>
… …
30#include <errno.h> 38#include <errno.h>
31#include <netdb.h> 39#include <netdb.h>
32#include <sys/stat.h> 40#include <sys/stat.h>
33#include <sys/types.h> 41#include <sys/types.h>
34#include <unistd.h> 42#include <unistd.h>
43#include <pwd.h>
35 44
36#include <netinet/in.h> 45#include "netcompat.h"
37 46
38#include <openssl/err.h> 47#include <openssl/err.h>
39#include <openssl/pem.h> 48#include <openssl/pem.h>
40#include <openssl/rsa.h> 49#include <openssl/rsa.h>
41#include <openssl/rand.h> 50#include <openssl/rand.h>
42 51#include <openssl/bn.h>
43#include "gettext.h"
44 52
45#include "conf.h" 53#include "conf.h"
46#include "slog.h" 54#include "slog.h"
47#include "util.h" 55#include "util.h"
48 56
49char *confbase; 57char *confbase;
50char *thisnode; 58char *thisnode;
51char *identname; 59char *identname;
52char *pidfilename;
53 60
54struct configuration conf; 61struct configuration conf;
55 62
56configuration::configuration () 63u8
64best_protocol (u8 protset)
57{ 65{
58 init (); 66 if (protset & PROT_IPv4 ) return PROT_IPv4;
59} 67 if (protset & PROT_ICMPv4) return PROT_ICMPv4;
68 if (protset & PROT_UDPv4 ) return PROT_UDPv4;
69 if (protset & PROT_TCPv4 ) return PROT_TCPv4;
70 if (protset & PROT_DNSv4 ) return PROT_DNSv4;
60 71
61configuration::~configuration () 72 return 0;
62{
63 cleanup ();
64} 73}
65 74
75const char *
76strprotocol (u8 protocol)
77{
78 if (protocol & PROT_IPv4 ) return "rawip";
79 if (protocol & PROT_ICMPv4) return "icmp";
80 if (protocol & PROT_UDPv4 ) return "udp";
81 if (protocol & PROT_TCPv4 ) return "tcp";
82 if (protocol & PROT_DNSv4 ) return "dns";
83
84 return "<unknown>";
85}
86
87static bool
88match_list (const vector<const char *> &list, const char *str)
89{
90 for (vector<const char *>::const_iterator i = list.end (); i-- > list.begin (); )
91 if ((*i)[0] == '*' && !(*i)[1])
92 return true;
93 else if (!strcmp (*i, str))
94 return true;
95
96 return false;
97}
98
99bool
100conf_node::may_direct (struct conf_node *other)
101{
102 if (match_list (allow_direct, other->nodename))
103 return true;
104
105 if (match_list (deny_direct, other->nodename))
106 return false;
107
108 return true;
109}
110
111conf_node::~conf_node ()
112{
113#if 0
114 // does not work, because string pointers etc. are shared
115 // is not called, however
116 if (rsa_key)
117 RSA_free (rsa_key);
118
119 free (nodename);
120 free (hostname);
121 free (if_up_data);
122#if ENABLE_DNS
123 free (domain);
124 free (dns_hostname);
125#endif
126#endif
127}
128
129void
66void configuration::init () 130configuration::init ()
67{ 131{
68 memset (this, 0, sizeof (*this)); 132 memset (this, 0, sizeof (*this));
69 133
134 mtu = DEFAULT_MTU;
135 nfmark = 0;
70 rekey = DEFAULT_REKEY; 136 rekey = DEFAULT_REKEY;
71 keepalive = DEFAULT_KEEPALIVE; 137 keepalive = DEFAULT_KEEPALIVE;
72 llevel = L_INFO; 138 llevel = L_INFO;
73 ip_proto = IPPROTO_GRE; 139 ip_proto = IPPROTO_GRE;
140#if ENABLE_ICMP
141 icmp_type = ICMP_ECHOREPLY;
142#endif
74 143
75 default_node.udp_port = DEFAULT_UDPPORT; 144 default_node.udp_port = DEFAULT_UDPPORT;
145 default_node.tcp_port = DEFAULT_UDPPORT; // ehrm
76 default_node.connectmode = conf_node::C_ALWAYS; 146 default_node.connectmode = conf_node::C_ALWAYS;
77 default_node.compress = true; 147 default_node.compress = true;
78 default_node.can_send = PROT_UDPv4; 148 default_node.protocols = 0;
79 default_node.can_recv = PROT_IPv4; 149 default_node.max_retry = DEFAULT_MAX_RETRY;
80} 150 default_node.max_ttl = DEFAULT_MAX_TTL;
151 default_node.max_queue = DEFAULT_MAX_QUEUE;
152 default_node.if_up_data = strdup ("");
81 153
154#if ENABLE_DNS
155 default_node.dns_port = 0; // default is 0 == client
156
157 dns_case_preserving = true;
158 dns_forw_host = strdup ("127.0.0.1");
159 dns_forw_port = 53;
160 dns_timeout_factor = DEFAULT_DNS_TIMEOUT_FACTOR;
161 dns_send_interval = DEFAULT_DNS_SEND_INTERVAL;
162 dns_overlap_factor = DEFAULT_DNS_OVERLAP_FACTOR;
163 dns_max_outstanding = DEFAULT_DNS_MAX_OUTSTANDING;
164#endif
165
166 pidfilename = strdup (LOCALSTATEDIR "/run/gvpe.pid");
167 seed_dev = strdup ("/dev/urandom");
168 reseed = DEFAULT_RESEED;
169}
170
171void
82void configuration::cleanup() 172configuration::cleanup ()
83{ 173{
84 if (rsa_key) 174 if (rsa_key)
85 RSA_free (rsa_key); 175 RSA_free (rsa_key);
86 176
87 free (ifname);
88
89 rsa_key = 0; 177 rsa_key = 0;
90 ifname = 0; 178
179 free (seed_dev); seed_dev = 0;
180 free (pidfilename); pidfilename = 0;
181 free (ifname); ifname = 0;
182#if ENABLE_HTTP_PROXY
183 free (proxy_host); proxy_host = 0;
184 free (proxy_auth); proxy_auth = 0;
185#endif
186#if ENABLE_DNS
187 free (dns_forw_host); dns_forw_host = 0;
188#endif
189 free (change_root); change_root = 0;
190 free (script_if_up); script_if_up = 0;
191 free (script_node_up); script_node_up = 0;
192 free (script_node_change); script_node_change = 0;
193 free (script_node_down); script_node_down = 0;
91} 194}
92 195
93void 196void
94configuration::clear_config () 197configuration::clear ()
95{ 198{
96 for (configuration::node_vector::iterator i = nodes.begin(); i != nodes.end(); ++i) 199 for (configuration::node_vector::iterator i = nodes.begin(); i != nodes.end(); ++i)
97 delete *i; 200 delete *i;
98 201
99 nodes.clear (); 202 nodes.clear ();
100 203
101 cleanup (); 204 cleanup ();
102 init (); 205 init ();
103} 206}
104 207
208conf_node *
209configuration::find_node (const char *name)
210{
211 for (configuration::node_vector::iterator i = conf.nodes.begin(); i != conf.nodes.end(); ++i)
212 if (!strcmp ((*i)->nodename, name))
213 return *i;
214
215 return 0;
216}
217
218//static bool
219//is_true (const char *name)
220//{
221 //re
222//}
223
105#define parse_bool(target,name,trueval,falseval) \ 224#define parse_bool(target,name,trueval,falseval) do { \
106 if (!strcmp (val, "yes")) target = trueval; \ 225 if (!strcmp (val, "yes")) target = trueval; \
107 else if (!strcmp (val, "no")) target = falseval; \ 226 else if (!strcmp (val, "no")) target = falseval; \
108 else if (!strcmp (val, "true")) target = trueval; \ 227 else if (!strcmp (val, "true")) target = trueval; \
109 else if (!strcmp (val, "false")) target = falseval; \ 228 else if (!strcmp (val, "false")) target = falseval; \
110 else if (!strcmp (val, "on")) target = trueval; \ 229 else if (!strcmp (val, "on")) target = trueval; \
111 else if (!strcmp (val, "off")) target = falseval; \ 230 else if (!strcmp (val, "off")) target = falseval; \
112 else \ 231 else \
113 slog (L_WARN, \
114 _("illegal value for '%s', only 'yes|true|on' or 'no|false|off' allowed, at '%s' line %d"), \ 232 return _("illegal boolean value, only 'yes|true|on' or 'no|false|off' allowed, ignored"); \
115 name, var, fname, lineno); 233} while (0)
116 234
117void configuration::read_config (bool need_keys) 235const char *
236configuration_parser::parse_line (char *line)
118{ 237{
119 char *fname; 238 {
120 FILE *f; 239 char *end = line + strlen (line);
121 240
122 clear_config (); 241 while (*end < ' ' && end >= line)
242 end--;
123 243
124 asprintf (&fname, "%s/vped.conf", confbase); 244 *++end = 0;
125 f = fopen (fname, "r"); 245 }
126 246
127 if (f) 247 char *tok = line;
248 const char *var = strtok (tok, "\t =");
249 tok = 0;
250
251 if (!var || !var[0])
252 return 0; /* no tokens on this line */
253
254 if (var[0] == '#')
255 return 0; /* comment: ignore */
256
257 if (!strcmp (var, "global"))
258 {
259 node = &conf.default_node;
260 return 0;
128 { 261 }
262
263 char *val = strtok (NULL, "\t\n\r =");
264
265 if (!val || val[0] == '#')
266 return _("no value given for variable, ignored");
267
268 else if (!strcmp (var, "on"))
269 {
270 if (::thisnode
271 && ((val[0] == '!' && strcmp (val + 1, ::thisnode))
272 || !strcmp (val, ::thisnode)))
273 return parse_line (strtok (NULL, "\n\r"));
274 }
275
276 else if (!strcmp (var, "include"))
277 {
278 char *fname = conf.config_filename (val);
279 parse_file (fname);
280 free (fname);
281 }
282
283 // truly global
284 else if (!strcmp (var, "loglevel"))
285 {
286 loglevel l = string_to_loglevel (val);
287
288 if (l == L_NONE)
289 return _("unknown loglevel, ignored");
290 }
291 else if (!strcmp (var, "serial"))
292 strncpy (conf.serial, val, sizeof (conf.serial));
293 else if (!strcmp (var, "ip-proto"))
294 conf.ip_proto = atoi (val);
295 else if (!strcmp (var, "icmp-type"))
296 {
297#if ENABLE_ICMP
298 conf.icmp_type = atoi (val);
299#endif
300 }
301 else if (!strcmp (var, "chuser"))
302 {
303 struct passwd *pw = getpwnam (val);
304 if (!pw)
305 return _("user specified for chuser not found");
306
307 conf.change_uid = pw->pw_uid;
308 conf.change_gid = pw->pw_gid;
309 }
310 else if (!strcmp (var, "chuid"))
311 conf.change_uid = atoi (val);
312 else if (!strcmp (var, "chgid"))
313 conf.change_gid = atoi (val);
314 else if (!strcmp (var, "chroot"))
315 free (conf.change_root), conf.change_root = strdup (val);
316
317 // per node
318 else if (!strcmp (var, "node"))
319 {
320 node = conf.find_node (val);
321
322 if (!node)
323 {
324 conf.default_node.id++;
325 node = new conf_node (conf.default_node);
326 conf.nodes.push_back (node);
327 node->nodename = strdup (val);
328 }
329 }
330 else if (!strcmp (var, "private-key"))
331 free (conf.prikeyfile), conf.prikeyfile = strdup (val);
332 else if (!strcmp (var, "ifpersist"))
333 parse_bool (conf.ifpersist, "ifpersist", true, false);
334 else if (!strcmp (var, "ifname"))
335 free (conf.ifname), conf.ifname = strdup (val);
336 else if (!strcmp (var, "rekey"))
337 conf.rekey = atoi (val);
338 else if (!strcmp (var, "keepalive"))
339 conf.keepalive = atoi (val);
340 else if (!strcmp (var, "mtu"))
341 conf.mtu = atoi (val);
342 else if (!strcmp (var, "nfmark"))
343 conf.nfmark = atoi (val);
344 else if (!strcmp (var, "seed-device"))
345 free (conf.seed_dev), conf.seed_dev = strdup (val);
346 else if (!strcmp (var, "seed-interval"))
347 conf.reseed = atoi (val);
348 else if (!strcmp (var, "if-up"))
349 free (conf.script_if_up), conf.script_if_up = strdup (val);
350 else if (!strcmp (var, "node-up"))
351 free (conf.script_node_up), conf.script_node_up = strdup (val);
352 else if (!strcmp (var, "node-change"))
353 free (conf.script_node_change), conf.script_node_change = strdup (val);
354 else if (!strcmp (var, "node-down"))
355 free (conf.script_node_down), conf.script_node_down = strdup (val);
356 else if (!strcmp (var, "pid-file"))
357 free (conf.pidfilename), conf.pidfilename = strdup (val);
358 else if (!strcmp (var, "dns-forw-host"))
359 {
360#if ENABLE_DNS
361 free (conf.dns_forw_host), conf.dns_forw_host = strdup (val);
362#endif
363 }
364 else if (!strcmp (var, "dns-forw-port"))
365 {
366#if ENABLE_DNS
367 conf.dns_forw_port = atoi (val);
368#endif
369 }
370 else if (!strcmp (var, "dns-timeout-factor"))
371 {
372#if ENABLE_DNS
373 conf.dns_timeout_factor = atof (val);
374#endif
375 }
376 else if (!strcmp (var, "dns-send-interval"))
377 {
378#if ENABLE_DNS
379 conf.dns_send_interval = atoi (val);
380#endif
381 }
382 else if (!strcmp (var, "dns-overlap-factor"))
383 {
384#if ENABLE_DNS
385 conf.dns_overlap_factor = atof (val);
386#endif
387 }
388 else if (!strcmp (var, "dns-max-outstanding"))
389 {
390#if ENABLE_DNS
391 conf.dns_max_outstanding = atoi (val);
392#endif
393 }
394 else if (!strcmp (var, "dns-case-preserving"))
395 {
396#if ENABLE_DNS
397 parse_bool (conf.dns_case_preserving, "dns-case-preserving", true, false);
398#endif
399 }
400 else if (!strcmp (var, "http-proxy-host"))
401 {
402#if ENABLE_HTTP_PROXY
403 free (conf.proxy_host), conf.proxy_host = strdup (val);
404#endif
405 }
406 else if (!strcmp (var, "http-proxy-port"))
407 {
408#if ENABLE_HTTP_PROXY
409 conf.proxy_port = atoi (val);
410#endif
411 }
412 else if (!strcmp (var, "http-proxy-auth"))
413 {
414#if ENABLE_HTTP_PROXY
415 conf.proxy_auth = (char *)base64_encode ((const u8 *)val, strlen (val));
416#endif
417 }
418
419 /* node-specific, non-defaultable */
420 else if (node != &conf.default_node && !strcmp (var, "hostname"))
421 free (node->hostname), node->hostname = strdup (val);
422
423 /* node-specific, defaultable */
424 else if (!strcmp (var, "udp-port"))
425 node->udp_port = atoi (val);
426 else if (!strcmp (var, "tcp-port"))
427 node->tcp_port = atoi (val);
428 else if (!strcmp (var, "dns-hostname"))
429 {
430#if ENABLE_DNS
431 free (node->dns_hostname), node->dns_hostname = strdup (val);
432#endif
433 }
434 else if (!strcmp (var, "dns-port"))
435 {
436#if ENABLE_DNS
437 node->dns_port = atoi (val);
438#endif
439 }
440 else if (!strcmp (var, "dns-domain"))
441 {
442#if ENABLE_DNS
443 free (node->domain), node->domain = strdup (val);
444#endif
445 }
446 else if (!strcmp (var, "if-up-data"))
447 free (node->if_up_data), node->if_up_data = strdup (val);
448 else if (!strcmp (var, "router-priority"))
449 node->routerprio = atoi (val);
450 else if (!strcmp (var, "max-retry"))
451 node->max_retry = atoi (val);
452 else if (!strcmp (var, "connect"))
453 {
454 if (!strcmp (val, "ondemand"))
455 node->connectmode = conf_node::C_ONDEMAND;
456 else if (!strcmp (val, "never"))
457 node->connectmode = conf_node::C_NEVER;
458 else if (!strcmp (val, "always"))
459 node->connectmode = conf_node::C_ALWAYS;
460 else if (!strcmp (val, "disabled"))
461 node->connectmode = conf_node::C_DISABLED;
462 else
463 return _("illegal value for 'connectmode', use one of 'ondemand', 'never', 'always' or 'disabled', ignored");
464 }
465 else if (!strcmp (var, "inherit-tos"))
466 parse_bool (node->inherit_tos, "inherit-tos", true, false);
467 else if (!strcmp (var, "compress"))
468 parse_bool (node->compress, "compress", true, false);
469 // all these bool options really really cost a lot of executable size!
470 else if (!strcmp (var, "enable-tcp"))
471 {
472#if ENABLE_TCP
473 u8 v; parse_bool (v, "enable-tcp" , PROT_TCPv4, 0); node->protocols = (node->protocols & ~PROT_TCPv4) | v;
474#endif
475 }
476 else if (!strcmp (var, "enable-icmp"))
477 {
478#if ENABLE_ICMP
479 u8 v; parse_bool (v, "enable-icmp" , PROT_ICMPv4, 0); node->protocols = (node->protocols & ~PROT_ICMPv4) | v;
480#endif
481 }
482 else if (!strcmp (var, "enable-dns"))
483 {
484#if ENABLE_DNS
485 u8 v; parse_bool (v, "enable-dns" , PROT_DNSv4, 0); node->protocols = (node->protocols & ~PROT_DNSv4) | v;
486#endif
487 }
488 else if (!strcmp (var, "enable-udp"))
489 {
490 u8 v; parse_bool (v, "enable-udp" , PROT_UDPv4, 0); node->protocols = (node->protocols & ~PROT_UDPv4) | v;
491 }
492 else if (!strcmp (var, "enable-rawip"))
493 {
494 u8 v; parse_bool (v, "enable-rawip", PROT_IPv4, 0); node->protocols = (node->protocols & ~PROT_IPv4 ) | v;
495 }
496 else if (!strcmp (var, "allow-direct"))
497 node->allow_direct.push_back (strdup (val));
498 else if (!strcmp (var, "deny-direct"))
499 node->deny_direct.push_back (strdup (val));
500 else if (!strcmp (var, "max-ttl"))
501 node->max_ttl = atof (val);
502 else if (!strcmp (var, "max-queue"))
503 node->max_queue = atoi (val);
504
505 // unknown or misplaced
506 else
507 return _("unknown configuration directive - ignored");
508
509 return 0;
510}
511
512void
513conf_node::finalise ()
514{
515 if (max_queue < 1)
516 {
517 slog (L_WARN, _("%s: max-queue value invalid, setting it to 1."), nodename);
518 max_queue = 1;
519 }
520
521 if (routerprio > 1 && (connectmode != C_ALWAYS && connectmode != C_DISABLED))
522 {
523 //slog (L_WARN, _("%s: has non-zero router-priority but either 'never' or 'ondemand' as connectmode, setting it to 'always'."), nodename);
524 connectmode = C_ALWAYS;
525 }
526}
527
528void
529configuration_parser::parse_file (const char *fname)
530{
531 if (FILE *f = fopen (fname, "r"))
532 {
129 char line[16384]; 533 char line [2048];
130 int lineno = 0; 534 int lineno = 0;
131 char *var, *val;
132 conf_node *node = &default_node;
133 535
134 while (fgets (line, sizeof (line), f)) 536 while (fgets (line, sizeof (line), f))
135 { 537 {
136 lineno++; 538 lineno++;
137 539
138 { 540 const char *warn = parse_line (line);
139 char *end = line + strlen (line);
140 541
141 while (*end < ' ' && end >= line) 542 if (warn)
142 end--; 543 slog (L_WARN, _("%s, at '%s', line %d."), warn, fname, lineno);
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 } 544 }
321 545
322 fclose (f); 546 fclose (f);
323 } 547 }
324 else 548 else
325 { 549 {
326 slog (L_ERR, _("unable to read config file '%s': %s"), fname, strerror (errno)); 550 slog (L_ERR, _("unable to read config file '%s': %s"), fname, strerror (errno));
327 exit (1); 551 exit (EXIT_FAILURE);
328 } 552 }
553}
329 554
555configuration_parser::configuration_parser (configuration &conf,
556 bool need_keys,
557 int argc,
558 char **argv)
559: conf (conf), need_keys (need_keys), argc (argc), argv (argv)
560{
561 char *fname;
562
563 conf.clear ();
564 node = &conf.default_node;
565
566 asprintf (&fname, "%s/gvpe.conf", confbase);
567 parse_file (fname);
330 free (fname); 568 free (fname);
331 569
332 fname = config_filename (prikeyfile, "hostkey"); 570 fname = conf.config_filename (conf.prikeyfile, "hostkey");
333 571
334 f = fopen (fname, "r"); 572 if (FILE *f = fopen (fname, "r"))
335 if (f)
336 { 573 {
337 rsa_key = RSA_new (); 574 conf.rsa_key = RSA_new ();
338 575
339 if (!PEM_read_RSAPrivateKey (f, &rsa_key, NULL, NULL)) 576 if (!PEM_read_RSAPrivateKey (f, &conf.rsa_key, NULL, NULL))
340 { 577 {
341 ERR_load_RSA_strings (); ERR_load_PEM_strings (); 578 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)); 579 slog (L_ERR, _("unable to read private rsa key file '%s': %s"), fname, ERR_error_string (ERR_get_error (), 0));
343 exit (1); 580 exit (EXIT_FAILURE);
344 } 581 }
345 582
346 RSA_blinding_on (rsa_key, 0); 583 require (RSA_blinding_on (conf.rsa_key, 0));
347 584
348 fclose (f); 585 fclose (f);
349 } 586 }
350 else 587 else
351 { 588 {
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) 589 if (need_keys)
355 exit (1); 590 {
591 slog (need_keys ? L_ERR : L_NOTICE, _("unable to open private rsa key file '%s': %s"), fname, strerror (errno));
592 exit (EXIT_FAILURE);
593 }
356 } 594 }
357 595
358 free (fname); 596 free (fname);
359}
360 597
598 fname = conf.config_filename (conf.pidfilename);
599 free (conf.pidfilename); conf.pidfilename = fname;
600
601 for (configuration::node_vector::iterator i = conf.nodes.begin(); i != conf.nodes.end(); ++i)
602 {
603 conf_node *node = *i;
604 char *fname;
605 FILE *f;
606
607 asprintf (&fname, "%s/pubkey/%s", confbase, node->nodename);
608
609 f = fopen (fname, "r");
610 if (f)
611 {
612 node->rsa_key = RSA_new ();
613
614 if (!PEM_read_RSAPublicKey (f, &node->rsa_key, NULL, NULL))
615 {
616 ERR_load_RSA_strings (); ERR_load_PEM_strings ();
617 slog (L_ERR, _("unable to open public rsa key file '%s': %s"), fname, ERR_error_string (ERR_get_error (), 0));
618 exit (EXIT_FAILURE);
619 }
620
621 require (RSA_blinding_on (node->rsa_key, 0));
622
623 fclose (f);
624 }
625 else
626 {
627 slog (need_keys ? L_ERR : L_NOTICE, _("unable to read public rsa key file '%s': %s"), fname, strerror (errno));
628
629 if (need_keys)
630 exit (EXIT_FAILURE);
631 }
632
633 free (fname);
634
635 (*i)->finalise ();
636 }
637
638 if (::thisnode)
639 {
640 conf.thisnode = conf.find_node (::thisnode);
641
642 if (need_keys)
643 {
644 if (!conf.thisnode)
645 {
646 slog (L_NOTICE, _("local node ('%s') not found in config file, aborting."), ::thisnode);
647 exit (EXIT_FAILURE);
648 }
649
650 if (conf.rsa_key && conf.thisnode->rsa_key)
651 if (BN_cmp (conf.rsa_key->n, conf.thisnode->rsa_key->n) != 0
652 || BN_cmp (conf.rsa_key->e, conf.thisnode->rsa_key->e) != 0)
653 {
654 slog (L_NOTICE, _("private hostkey and public node key mismatch: is '%s' the correct node?"), ::thisnode);
655 exit (EXIT_FAILURE);
656 }
657 }
658 }
659
660 parse_argv ();
661}
662
663void
664configuration_parser::parse_argv ()
665{
666 for (int i = 0; i < argc; ++i)
667 {
668 char *v = argv [i];
669
670 if (!*v)
671 continue;
672
673 char *enode = v;
674
675 while (*enode != '.' && *enode > ' ' && *enode != '=' && *enode)
676 enode++;
677
678 if (*enode != '.')
679 enode = 0;
680
681 if (enode)
682 {
683 char *val = strdup (v);
684 val [enode - v] = 0;
685 node = conf.find_node (val);
686 free (val);
687
688 if (!node)
689 {
690 slog (L_WARN, _("command line option '%s' refers to unknown node, ignoring."), v);
691 continue;
692 }
693 }
694 else
695 node = &conf.default_node;
696
697 const char *warn = parse_line (enode ? enode + 1 : v);
698
699 if (warn)
700 slog (L_WARN, _("%s, while parsing command line option '%s'."), warn, v);
701 }
702}
703
704char *
361char *configuration::config_filename (const char *name, const char *dflt) 705configuration::config_filename (const char *name, const char *dflt)
362{ 706{
363 char *fname; 707 char *fname;
364 708
365 asprintf (&fname, name ? name : dflt, ::thisnode); 709 asprintf (&fname, name ? name : dflt, ::thisnode ? ::thisnode : "<unset>");
366 710
367 if (!ABSOLUTE_PATH (fname)) 711 if (!ABSOLUTE_PATH (fname))
368 { 712 {
369 char *rname = fname; 713 char *rname = fname;
370 asprintf (&fname, "%s/%s", confbase, rname); 714 asprintf (&fname, "%s/%s", confbase, rname);
371 free (rname); 715 free (rname);
372 } 716 }
373 717
374 return fname; 718 return fname;
719}
720
721void
722conf_node::print ()
723{
724 printf ("%4d fe:fd:80:00:0%1x:%02x %c %-8.8s %-10.10s %02x %s%s%d\n",
725 id,
726 id >> 8, id & 0xff,
727 compress ? 'Y' : 'N',
728 connectmode == C_ONDEMAND ? "ondemand"
729 : connectmode == C_NEVER ? "never"
730 : connectmode == C_ALWAYS ? "always"
731 : connectmode == C_DISABLED ? "disabled"
732 : "",
733 nodename,
734 protocols,
735 hostname ? hostname : "",
736 hostname ? ":" : "",
737 hostname ? udp_port : 0
738 );
375} 739}
376 740
377void 741void
378configuration::print () 742configuration::print ()
379{ 743{
… …
383 printf (_("MTU: %d\n"), mtu); 747 printf (_("MTU: %d\n"), mtu);
384 printf (_("rekeying interval: %d\n"), rekey); 748 printf (_("rekeying interval: %d\n"), rekey);
385 printf (_("keepalive interval: %d\n"), keepalive); 749 printf (_("keepalive interval: %d\n"), keepalive);
386 printf (_("interface: %s\n"), ifname); 750 printf (_("interface: %s\n"), ifname);
387 printf (_("primary rsa key: %s\n"), prikeyfile ? prikeyfile : "<default>"); 751 printf (_("primary rsa key: %s\n"), prikeyfile ? prikeyfile : "<default>");
388 printf (_("rsa key size: %d\n"), rsa_key ? RSA_size (rsa_key) : -1); 752 printf (_("rsa key size: %d\n"), rsa_key ? RSA_size (rsa_key) * 8 : -1);
389 printf ("\n"); 753 printf ("\n");
390 754
391 printf ("%4s %-17s %s %-8.8s %-10.10s %s\n", 755 printf ("%4s %-17s %s %-8.8s %-10.10s %04s %s\n",
392 _("ID#"), _("MAC"), _("Com"), _("Conmode"), _("Node"), _("Host:Port")); 756 _("ID#"), _("MAC"), _("Com"), _("Conmode"), _("Node"), _("Prot"), _("Host:Port"));
393 757
394 for (node_vector::iterator i = nodes.begin (); i != nodes.end (); ++i) 758 for (node_vector::iterator i = nodes.begin (); i != nodes.end (); ++i)
395 (*i)->print (); 759 (*i)->print ();
396 760
397 printf ("\n"); 761 printf ("\n");
398} 762}
399 763
400void 764configuration::configuration ()
401conf_node::print ()
402{ 765{
403 printf ("%4d fe:fd:80:00:0%1x:%02x %c %-8.8s %-10.10s %s%s%d\n", 766 asprintf (&confbase, "%s/gvpe", CONFDIR);
404 id,
405 id >> 8, id & 0xff,
406 compress ? 'Y' : 'N',
407 connectmode == C_ONDEMAND ? "ondemand" :
408 connectmode == C_NEVER ? "never" :
409 connectmode == C_ALWAYS ? "always" : "",
410 nodename,
411 hostname ? hostname : "",
412 hostname ? ":" : "",
413 hostname ? udp_port : 0
414 );
415}
416 767
768 init ();
769}
770
771configuration::~configuration ()
772{
773 cleanup ();
774}
775

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