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Comparing gvpe/src/conf.C (file contents):
Revision 1.14 by pcg, Tue Apr 8 03:25:35 2003 UTC vs.
Revision 1.62 by root, Wed Jul 17 16:40:57 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#include <netinet/ip_icmp.h>
38 46
39#include <openssl/err.h> 47#include <openssl/err.h>
40#include <openssl/pem.h> 48#include <openssl/pem.h>
41#include <openssl/rsa.h> 49#include <openssl/rsa.h>
42#include <openssl/rand.h> 50#include <openssl/rand.h>
43 51#include <openssl/bn.h>
44#include "gettext.h"
45 52
46#include "conf.h" 53#include "conf.h"
47#include "slog.h" 54#include "slog.h"
48#include "util.h" 55#include "util.h"
49 56
50char *confbase; 57char *confbase;
51char *thisnode; 58char *thisnode;
52char *identname; 59char *identname;
53char *pidfilename;
54 60
55struct configuration conf; 61struct configuration conf;
56 62
63u8
57u8 best_protocol (u8 protset) 64best_protocol (u8 protset)
58{ 65{
59 if (protset & PROT_IPv4 ) return PROT_IPv4; 66 if (protset & PROT_IPv4 ) return PROT_IPv4;
60 if (protset & PROT_ICMPv4) return PROT_ICMPv4; 67 if (protset & PROT_ICMPv4) return PROT_ICMPv4;
61 if (protset & PROT_UDPv4 ) return PROT_UDPv4; 68 if (protset & PROT_UDPv4 ) return PROT_UDPv4;
62 if (protset & PROT_TCPv4 ) return PROT_TCPv4; 69 if (protset & PROT_TCPv4 ) return PROT_TCPv4;
70 if (protset & PROT_DNSv4 ) return PROT_DNSv4;
63 71
64 return 0; 72 return 0;
65} 73}
66 74
75const char *
67const char *strprotocol (u8 protocol) 76strprotocol (u8 protocol)
68{ 77{
69 if (protocol & PROT_IPv4 ) return "rawip"; 78 if (protocol & PROT_IPv4 ) return "rawip";
70 if (protocol & PROT_ICMPv4) return "icmp"; 79 if (protocol & PROT_ICMPv4) return "icmp";
71 if (protocol & PROT_UDPv4 ) return "udp"; 80 if (protocol & PROT_UDPv4 ) return "udp";
72 if (protocol & PROT_TCPv4 ) return "tcp"; 81 if (protocol & PROT_TCPv4 ) return "tcp";
82 if (protocol & PROT_DNSv4 ) return "dns";
73 83
74 return "<unknown>"; 84 return "<unknown>";
75} 85}
76 86
77void 87static bool
78conf_node::print () 88match_list (const vector<const char *> &list, const char *str)
79{ 89{
80 printf ("%4d fe:fd:80:00:0%1x:%02x %c %-8.8s %-10.10s %s%s%d\n", 90 for (vector<const char *>::const_iterator i = list.end (); i-- > list.begin (); )
81 id, 91 if ((*i)[0] == '*' && !(*i)[1])
82 id >> 8, id & 0xff, 92 return true;
83 compress ? 'Y' : 'N', 93 else if (!strcmp (*i, str))
84 connectmode == C_ONDEMAND ? "ondemand" : 94 return true;
85 connectmode == C_NEVER ? "never" : 95
86 connectmode == C_ALWAYS ? "always" : "", 96 return false;
87 nodename, 97}
88 hostname ? hostname : "", 98
89 hostname ? ":" : "", 99bool
90 hostname ? udp_port : 0 100conf_node::may_direct (struct conf_node *other)
91 ); 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;
92} 109}
93 110
94conf_node::~conf_node () 111conf_node::~conf_node ()
95{ 112{
113#if 0
114 // does not work, because string pointers etc. are shared
115 // is not called, however
96 if (rsa_key) 116 if (rsa_key)
97 RSA_free (rsa_key); 117 RSA_free (rsa_key);
98 118
99 free (nodename); 119 free (nodename);
100 free (hostname); 120 free (hostname);
121 free (if_up_data);
122#if ENABLE_DNS
123 free (domain);
124 free (dns_hostname);
125#endif
126#endif
101} 127}
102 128
129void
103void configuration::init () 130configuration::init ()
104{ 131{
105 memset (this, 0, sizeof (*this)); 132 memset (this, 0, sizeof (*this));
106 133
134 mtu = DEFAULT_MTU;
135 nfmark = 0;
107 rekey = DEFAULT_REKEY; 136 rekey = DEFAULT_REKEY;
108 keepalive = DEFAULT_KEEPALIVE; 137 keepalive = DEFAULT_KEEPALIVE;
109 llevel = L_INFO; 138 llevel = L_INFO;
110 ip_proto = IPPROTO_GRE; 139 ip_proto = IPPROTO_GRE;
140#if ENABLE_ICMP
111 icmp_type = ICMP_ECHOREPLY; 141 icmp_type = ICMP_ECHOREPLY;
142#endif
112 143
113 default_node.udp_port = DEFAULT_UDPPORT; 144 default_node.udp_port = DEFAULT_UDPPORT;
114 default_node.tcp_port = DEFAULT_UDPPORT; 145 default_node.tcp_port = DEFAULT_UDPPORT; // ehrm
115 default_node.connectmode = conf_node::C_ALWAYS; 146 default_node.connectmode = conf_node::C_ALWAYS;
116 default_node.compress = true; 147 default_node.compress = true;
117 default_node.protocols = PROT_UDPv4; 148 default_node.protocols = 0;
118} 149 default_node.max_retry = DEFAULT_MAX_RETRY;
150 default_node.max_ttl = DEFAULT_MAX_TTL;
151 default_node.max_queue = DEFAULT_MAX_QUEUE;
152 default_node.if_up_data = strdup ("");
119 153
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
120void configuration::cleanup() 172configuration::cleanup ()
121{ 173{
122 if (rsa_key) 174 if (rsa_key)
123 RSA_free (rsa_key); 175 RSA_free (rsa_key);
124 176
125 rsa_key = 0; 177 rsa_key = 0;
126 178
179 free (seed_dev); seed_dev = 0;
127 free (ifname); ifname = 0; 180 free (pidfilename); pidfilename = 0;
181 free (ifname); ifname = 0;
128#if ENABLE_HTTP_PROXY 182#if ENABLE_HTTP_PROXY
129 free (proxy_host); proxy_host = 0; 183 free (proxy_host); proxy_host = 0;
130 free (proxy_auth); proxy_auth = 0; 184 free (proxy_auth); proxy_auth = 0;
131#endif 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;
132} 194}
133 195
134void 196void
135configuration::clear_config () 197configuration::clear ()
136{ 198{
137 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)
138 delete *i; 200 delete *i;
139 201
140 nodes.clear (); 202 nodes.clear ();
141 203
142 cleanup (); 204 cleanup ();
143 init (); 205 init ();
144} 206}
145 207
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
146#define parse_bool(target,name,trueval,falseval) \ 224#define parse_bool(target,name,trueval,falseval) do { \
147 if (!strcmp (val, "yes")) target = trueval; \ 225 if (!strcmp (val, "yes")) target = trueval; \
148 else if (!strcmp (val, "no")) target = falseval; \ 226 else if (!strcmp (val, "no")) target = falseval; \
149 else if (!strcmp (val, "true")) target = trueval; \ 227 else if (!strcmp (val, "true")) target = trueval; \
150 else if (!strcmp (val, "false")) target = falseval; \ 228 else if (!strcmp (val, "false")) target = falseval; \
151 else if (!strcmp (val, "on")) target = trueval; \ 229 else if (!strcmp (val, "on")) target = trueval; \
152 else if (!strcmp (val, "off")) target = falseval; \ 230 else if (!strcmp (val, "off")) target = falseval; \
153 else \ 231 else \
154 slog (L_WARN, \
155 _("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"); \
156 name, var, fname, lineno); 233} while (0)
157 234
158void configuration::read_config (bool need_keys) 235const char *
236configuration_parser::parse_line (char *line)
159{ 237{
160 char *fname; 238 {
161 FILE *f; 239 char *end = line + strlen (line);
162 240
163 clear_config (); 241 while (*end < ' ' && end >= line)
242 end--;
164 243
165 asprintf (&fname, "%s/vped.conf", confbase); 244 *++end = 0;
166 f = fopen (fname, "r"); 245 }
167 246
168 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 char *val = strtok (NULL, "\t\n\r =");
258
259 if (!val || val[0] == '#')
260 return _("no value given for variable, ignored");
261
262 else if (!strcmp (var, "on"))
263 {
264 if (::thisnode
265 && ((val[0] == '!' && strcmp (val + 1, ::thisnode))
266 || !strcmp (val, ::thisnode)))
267 return parse_line (strtok (NULL, "\n\r"));
169 { 268 }
269
270 else if (!strcmp (var, "include"))
271 {
272 char *fname = conf.config_filename (val);
273 parse_file (fname);
274 free (fname);
275 }
276
277 // truly global
278 else if (!strcmp (var, "loglevel"))
279 {
280 loglevel l = string_to_loglevel (val);
281
282 if (l == L_NONE)
283 return _("unknown loglevel, ignored");
284 }
285 else if (!strcmp (var, "ip-proto"))
286 conf.ip_proto = atoi (val);
287 else if (!strcmp (var, "icmp-type"))
288 {
289#if ENABLE_ICMP
290 conf.icmp_type = atoi (val);
291#endif
292 }
293 else if (!strcmp (var, "chuser"))
294 {
295 struct passwd *pw = getpwnam (val);
296 if (!pw)
297 return _("user specified for chuser not found");
298
299 conf.change_uid = pw->pw_uid;
300 conf.change_gid = pw->pw_gid;
301 }
302 else if (!strcmp (var, "chuid"))
303 conf.change_uid = atoi (val);
304 else if (!strcmp (var, "chgid"))
305 conf.change_gid = atoi (val);
306 else if (!strcmp (var, "chroot"))
307 free (conf.change_root), conf.change_root = strdup (val);
308
309 // per node
310 else if (!strcmp (var, "global"))
311 node = &conf.default_node;
312 else if (!strcmp (var, "node"))
313 {
314 node = conf.find_node (val);
315
316 if (!node)
317 {
318 conf.default_node.id++;
319 node = new conf_node (conf.default_node);
320 conf.nodes.push_back (node);
321 node->nodename = strdup (val);
322 }
323 }
324 else if (!strcmp (var, "private-key"))
325 free (conf.prikeyfile), conf.prikeyfile = strdup (val);
326 else if (!strcmp (var, "ifpersist"))
327 parse_bool (conf.ifpersist, "ifpersist", true, false);
328 else if (!strcmp (var, "ifname"))
329 free (conf.ifname), conf.ifname = strdup (val);
330 else if (!strcmp (var, "rekey"))
331 conf.rekey = atoi (val);
332 else if (!strcmp (var, "keepalive"))
333 conf.keepalive = atoi (val);
334 else if (!strcmp (var, "mtu"))
335 conf.mtu = atoi (val);
336 else if (!strcmp (var, "nfmark"))
337 conf.nfmark = atoi (val);
338 else if (!strcmp (var, "seed-device"))
339 free (conf.seed_dev), conf.seed_dev = strdup (val);
340 else if (!strcmp (var, "seed-interval"))
341 conf.reseed = atoi (val);
342 else if (!strcmp (var, "if-up"))
343 free (conf.script_if_up), conf.script_if_up = strdup (val);
344 else if (!strcmp (var, "node-up"))
345 free (conf.script_node_up), conf.script_node_up = strdup (val);
346 else if (!strcmp (var, "node-change"))
347 free (conf.script_node_change), conf.script_node_change = strdup (val);
348 else if (!strcmp (var, "node-down"))
349 free (conf.script_node_down), conf.script_node_down = strdup (val);
350 else if (!strcmp (var, "pid-file"))
351 free (conf.pidfilename), conf.pidfilename = strdup (val);
352 else if (!strcmp (var, "dns-forw-host"))
353 {
354#if ENABLE_DNS
355 free (conf.dns_forw_host), conf.dns_forw_host = strdup (val);
356#endif
357 }
358 else if (!strcmp (var, "dns-forw-port"))
359 {
360#if ENABLE_DNS
361 conf.dns_forw_port = atoi (val);
362#endif
363 }
364 else if (!strcmp (var, "dns-timeout-factor"))
365 {
366#if ENABLE_DNS
367 conf.dns_timeout_factor = atof (val);
368#endif
369 }
370 else if (!strcmp (var, "dns-send-interval"))
371 {
372#if ENABLE_DNS
373 conf.dns_send_interval = atoi (val);
374#endif
375 }
376 else if (!strcmp (var, "dns-overlap-factor"))
377 {
378#if ENABLE_DNS
379 conf.dns_overlap_factor = atof (val);
380#endif
381 }
382 else if (!strcmp (var, "dns-max-outstanding"))
383 {
384#if ENABLE_DNS
385 conf.dns_max_outstanding = atoi (val);
386#endif
387 }
388 else if (!strcmp (var, "dns-case-preserving"))
389 {
390#if ENABLE_DNS
391 parse_bool (conf.dns_case_preserving, "dns-case-preserving", true, false);
392#endif
393 }
394 else if (!strcmp (var, "http-proxy-host"))
395 {
396#if ENABLE_HTTP_PROXY
397 free (conf.proxy_host), conf.proxy_host = strdup (val);
398#endif
399 }
400 else if (!strcmp (var, "http-proxy-port"))
401 {
402#if ENABLE_HTTP_PROXY
403 conf.proxy_port = atoi (val);
404#endif
405 }
406 else if (!strcmp (var, "http-proxy-auth"))
407 {
408#if ENABLE_HTTP_PROXY
409 conf.proxy_auth = (char *)base64_encode ((const u8 *)val, strlen (val));
410#endif
411 }
412
413 /* node-specific, non-defaultable */
414 else if (node != &conf.default_node && !strcmp (var, "hostname"))
415 free (node->hostname), node->hostname = strdup (val);
416
417 /* node-specific, defaultable */
418 else if (!strcmp (var, "udp-port"))
419 node->udp_port = atoi (val);
420 else if (!strcmp (var, "tcp-port"))
421 node->tcp_port = atoi (val);
422 else if (!strcmp (var, "dns-hostname"))
423 {
424#if ENABLE_DNS
425 free (node->dns_hostname), node->dns_hostname = strdup (val);
426#endif
427 }
428 else if (!strcmp (var, "dns-port"))
429 {
430#if ENABLE_DNS
431 node->dns_port = atoi (val);
432#endif
433 }
434 else if (!strcmp (var, "dns-domain"))
435 {
436#if ENABLE_DNS
437 free (node->domain), node->domain = strdup (val);
438#endif
439 }
440 else if (!strcmp (var, "if-up-data"))
441 free (node->if_up_data), node->if_up_data = strdup (val);
442 else if (!strcmp (var, "router-priority"))
443 node->routerprio = atoi (val);
444 else if (!strcmp (var, "max-retry"))
445 node->max_retry = atoi (val);
446 else if (!strcmp (var, "connect"))
447 {
448 if (!strcmp (val, "ondemand"))
449 node->connectmode = conf_node::C_ONDEMAND;
450 else if (!strcmp (val, "never"))
451 node->connectmode = conf_node::C_NEVER;
452 else if (!strcmp (val, "always"))
453 node->connectmode = conf_node::C_ALWAYS;
454 else if (!strcmp (val, "disabled"))
455 node->connectmode = conf_node::C_DISABLED;
456 else
457 return _("illegal value for 'connectmode', use one of 'ondemand', 'never', 'always' or 'disabled', ignored");
458 }
459 else if (!strcmp (var, "inherit-tos"))
460 parse_bool (node->inherit_tos, "inherit-tos", true, false);
461 else if (!strcmp (var, "compress"))
462 parse_bool (node->compress, "compress", true, false);
463 // all these bool options really really cost a lot of executable size!
464 else if (!strcmp (var, "enable-tcp"))
465 {
466#if ENABLE_TCP
467 u8 v; parse_bool (v, "enable-tcp" , PROT_TCPv4, 0); node->protocols = (node->protocols & ~PROT_TCPv4) | v;
468#endif
469 }
470 else if (!strcmp (var, "enable-icmp"))
471 {
472#if ENABLE_ICMP
473 u8 v; parse_bool (v, "enable-icmp" , PROT_ICMPv4, 0); node->protocols = (node->protocols & ~PROT_ICMPv4) | v;
474#endif
475 }
476 else if (!strcmp (var, "enable-dns"))
477 {
478#if ENABLE_DNS
479 u8 v; parse_bool (v, "enable-dns" , PROT_DNSv4, 0); node->protocols = (node->protocols & ~PROT_DNSv4) | v;
480#endif
481 }
482 else if (!strcmp (var, "enable-udp"))
483 {
484 u8 v; parse_bool (v, "enable-udp" , PROT_UDPv4, 0); node->protocols = (node->protocols & ~PROT_UDPv4) | v;
485 }
486 else if (!strcmp (var, "enable-rawip"))
487 {
488 u8 v; parse_bool (v, "enable-rawip", PROT_IPv4, 0); node->protocols = (node->protocols & ~PROT_IPv4 ) | v;
489 }
490 else if (!strcmp (var, "allow-direct"))
491 node->allow_direct.push_back (strdup (val));
492 else if (!strcmp (var, "deny-direct"))
493 node->deny_direct.push_back (strdup (val));
494 else if (!strcmp (var, "max-ttl"))
495 node->max_ttl = atof (val);
496 else if (!strcmp (var, "max-queue"))
497 node->max_queue = atoi (val);
498
499 // unknown or misplaced
500 else
501 return _("unknown configuration directive - ignored");
502
503 return 0;
504}
505
506void
507conf_node::finalise ()
508{
509 if (max_queue < 1)
510 {
511 slog (L_WARN, _("%s: max-queue value invalid, setting it to 1."), nodename);
512 max_queue = 1;
513 }
514
515 if (routerprio > 1 && (connectmode != C_ALWAYS && connectmode != C_DISABLED))
516 {
517 //slog (L_WARN, _("%s: has non-zero router-priority but either 'never' or 'ondemand' as connectmode, setting it to 'always'."), nodename);
518 connectmode = C_ALWAYS;
519 }
520}
521
522void
523configuration_parser::parse_file (const char *fname)
524{
525 if (FILE *f = fopen (fname, "r"))
526 {
170 char line[16384]; 527 char line [2048];
171 int lineno = 0; 528 int lineno = 0;
172 char *var, *val;
173 conf_node *node = &default_node;
174 529
175 while (fgets (line, sizeof (line), f)) 530 while (fgets (line, sizeof (line), f))
176 { 531 {
177 lineno++; 532 lineno++;
178 533
179 { 534 const char *warn = parse_line (line);
180 char *end = line + strlen (line);
181 535
182 while (*end < ' ' && end >= line) 536 if (warn)
183 end--; 537 slog (L_WARN, _("%s, at '%s', line %d."), warn, fname, lineno);
184
185 *++end = 0;
186 }
187
188 char *tok = line;
189
190retry:
191 var = strtok (tok, "\t =");
192 tok = 0;
193
194 if (!var || !var[0])
195 continue; /* no tokens on this line */
196
197 if (var[0] == '#')
198 continue; /* comment: ignore */
199
200 val = strtok (NULL, "\t\n\r =");
201
202 if (!val || val[0] == '#')
203 {
204 slog (L_WARN,
205 _("no value for variable `%s', at '%s' line %d"),
206 var, fname, lineno);
207 break;
208 }
209
210 if (!strcmp (var, "on"))
211 {
212 if (!::thisnode
213 || (val[0] == '!' && strcmp (val + 1, ::thisnode))
214 || !strcmp (val, ::thisnode))
215 goto retry;
216
217 continue;
218 }
219
220 // truly global
221 if (!strcmp (var, "loglevel"))
222 {
223 loglevel l = string_to_loglevel (val);
224
225 if (l != L_NONE)
226 llevel = l;
227 else
228 slog (L_WARN, "'%s': %s, at '%s' line %d", val, UNKNOWN_LOGLEVEL, fname, line);
229 }
230 else if (!strcmp (var, "ip-proto"))
231 ip_proto = atoi (val);
232 else if (!strcmp (var, "icmp-type"))
233 icmp_type = atoi (val);
234
235 // per config
236 else if (!strcmp (var, "node"))
237 {
238 default_node.id++;
239
240 node = new conf_node (default_node);
241
242 nodes.push_back (node);
243
244 node->nodename = strdup (val);
245
246 {
247 char *fname;
248 FILE *f;
249
250 asprintf (&fname, "%s/pubkey/%s", confbase, node->nodename);
251
252 f = fopen (fname, "r");
253 if (f)
254 {
255 node->rsa_key = RSA_new ();
256
257 if (!PEM_read_RSAPublicKey(f, &node->rsa_key, NULL, NULL))
258 {
259 ERR_load_RSA_strings (); ERR_load_PEM_strings ();
260 slog (L_ERR, _("unable to open public rsa key file '%s': %s"), fname, ERR_error_string (ERR_get_error (), 0));
261 exit (1);
262 }
263
264 RSA_blinding_on (node->rsa_key, 0);
265
266 fclose (f);
267 }
268 else
269 {
270 slog (need_keys ? L_ERR : L_NOTICE, _("unable to read public rsa key file '%s': %s"), fname, strerror (errno));
271
272 if (need_keys)
273 exit (1);
274 }
275
276 free (fname);
277 }
278
279 if (!::thisnode || !strcmp (node->nodename, ::thisnode))
280 thisnode = node;
281 }
282 else if (!strcmp (var, "private-key"))
283 prikeyfile = strdup (val);
284 else if (!strcmp (var, "ifpersist"))
285 {
286 parse_bool (ifpersist, "ifpersist", true, false);
287 }
288 else if (!strcmp (var, "ifname"))
289 ifname = strdup (val);
290 else if (!strcmp (var, "rekey"))
291 rekey = atoi (val);
292 else if (!strcmp (var, "keepalive"))
293 keepalive = atoi (val);
294 else if (!strcmp (var, "mtu"))
295 mtu = atoi (val);
296 else if (!strcmp (var, "if-up"))
297 script_if_up = strdup (val);
298 else if (!strcmp (var, "node-up"))
299 script_node_up = strdup (val);
300 else if (!strcmp (var, "node-down"))
301 script_node_down = strdup (val);
302#if ENABLE_HTTP_PROXY
303 else if (!strcmp (var, "http-proxy-host"))
304 proxy_host = strdup (val);
305 else if (!strcmp (var, "http-proxy-port"))
306 proxy_port = atoi (val);
307 else if (!strcmp (var, "http-proxy-auth"))
308 proxy_auth = (char *)base64_encode ((const u8 *)val, strlen (val));
309#endif
310
311 /* node-specific, non-defaultable */
312 else if (node != &default_node && !strcmp (var, "hostname"))
313 {
314 free (node->hostname);
315 node->hostname = strdup (val);
316 }
317
318 /* node-specific, defaultable */
319 else if (!strcmp (var, "udp-port"))
320 node->udp_port = atoi (val);
321 else if (!strcmp (var, "tcp-port"))
322 node->tcp_port = atoi (val);
323 else if (!strcmp (var, "router-priority"))
324 node->routerprio = atoi (val);
325 else if (!strcmp (var, "connect"))
326 {
327 if (!strcmp (val, "ondemand"))
328 node->connectmode = conf_node::C_ONDEMAND;
329 else if (!strcmp (val, "never"))
330 node->connectmode = conf_node::C_NEVER;
331 else if (!strcmp (val, "always"))
332 node->connectmode = conf_node::C_ALWAYS;
333 else if (!strcmp (val, "disabled"))
334 node->connectmode = conf_node::C_DISABLED;
335 else
336 slog (L_WARN,
337 _("illegal value for 'connectmode', use one of 'ondemand', 'never', 'always' or 'disabled', at '%s' line %d"),
338 var, fname, lineno);
339 }
340 else if (!strcmp (var, "inherit-tos"))
341 {
342 parse_bool (node->inherit_tos, "inherit-tos", true, false);
343 }
344 else if (!strcmp (var, "compress"))
345 {
346 parse_bool (node->compress, "compress", true, false);
347 }
348 // all these bool options really really cost a lot of executable size!
349 else if (!strcmp (var, "enable-tcp"))
350 {
351#if ENABLE_TCP
352 u8 v; parse_bool (v, "enable-tcp" , PROT_TCPv4, 0); node->protocols = (node->protocols & ~PROT_TCPv4) | v;
353#endif
354 }
355 else if (!strcmp (var, "enable-icmp"))
356 {
357#if ENABLE_ICMP
358 u8 v; parse_bool (v, "enable-icmp" , PROT_ICMPv4, 0); node->protocols = (node->protocols & ~PROT_ICMPv4) | v;
359#endif
360 }
361 else if (!strcmp (var, "enable-udp"))
362 {
363 u8 v; parse_bool (v, "enable-udp" , PROT_UDPv4, 0); node->protocols = (node->protocols & ~PROT_UDPv4) | v;
364 }
365 else if (!strcmp (var, "enable-rawip"))
366 {
367 u8 v; parse_bool (v, "enable-rawip", PROT_IPv4, 0); node->protocols = (node->protocols & ~PROT_IPv4 ) | v;
368 }
369
370 // unknown or misplaced
371 else
372 slog (L_WARN,
373 _("unknown or misplaced variable `%s', at '%s' line %d"),
374 var, fname, lineno);
375 } 538 }
376 539
377 fclose (f); 540 fclose (f);
378 } 541 }
379 else 542 else
380 { 543 {
381 slog (L_ERR, _("unable to read config file '%s': %s"), fname, strerror (errno)); 544 slog (L_ERR, _("unable to read config file '%s': %s"), fname, strerror (errno));
382 exit (1); 545 exit (EXIT_FAILURE);
383 } 546 }
547}
384 548
549configuration_parser::configuration_parser (configuration &conf,
550 bool need_keys,
551 int argc,
552 char **argv)
553: conf (conf), need_keys (need_keys), argc (argc), argv (argv)
554{
555 char *fname;
556
557 conf.clear ();
558 node = &conf.default_node;
559
560 asprintf (&fname, "%s/gvpe.conf", confbase);
561 parse_file (fname);
385 free (fname); 562 free (fname);
386 563
387 fname = config_filename (prikeyfile, "hostkey"); 564 fname = conf.config_filename (conf.prikeyfile, "hostkey");
388 565
389 f = fopen (fname, "r"); 566 if (FILE *f = fopen (fname, "r"))
390 if (f)
391 { 567 {
392 rsa_key = RSA_new (); 568 conf.rsa_key = RSA_new ();
393 569
394 if (!PEM_read_RSAPrivateKey (f, &rsa_key, NULL, NULL)) 570 if (!PEM_read_RSAPrivateKey (f, &conf.rsa_key, NULL, NULL))
395 { 571 {
396 ERR_load_RSA_strings (); ERR_load_PEM_strings (); 572 ERR_load_RSA_strings (); ERR_load_PEM_strings ();
397 slog (L_ERR, _("unable to read private rsa key file '%s': %s"), fname, ERR_error_string (ERR_get_error (), 0)); 573 slog (L_ERR, _("unable to read private rsa key file '%s': %s"), fname, ERR_error_string (ERR_get_error (), 0));
398 exit (1); 574 exit (EXIT_FAILURE);
399 } 575 }
400 576
401 RSA_blinding_on (rsa_key, 0); 577 require (RSA_blinding_on (conf.rsa_key, 0));
402 578
403 fclose (f); 579 fclose (f);
404 } 580 }
405 else 581 else
406 { 582 {
407 slog (need_keys ? L_ERR : L_NOTICE, _("unable to open private rsa key file '%s': %s"), fname, strerror (errno));
408
409 if (need_keys) 583 if (need_keys)
410 exit (1); 584 {
585 slog (need_keys ? L_ERR : L_NOTICE, _("unable to open private rsa key file '%s': %s"), fname, strerror (errno));
586 exit (EXIT_FAILURE);
587 }
411 } 588 }
412 589
413 free (fname); 590 free (fname);
414}
415 591
592 fname = conf.config_filename (conf.pidfilename);
593 free (conf.pidfilename); conf.pidfilename = fname;
594
595 for (configuration::node_vector::iterator i = conf.nodes.begin(); i != conf.nodes.end(); ++i)
596 {
597 conf_node *node = *i;
598 char *fname;
599 FILE *f;
600
601 asprintf (&fname, "%s/pubkey/%s", confbase, node->nodename);
602
603 f = fopen (fname, "r");
604 if (f)
605 {
606 node->rsa_key = RSA_new ();
607
608 if (!PEM_read_RSAPublicKey (f, &node->rsa_key, NULL, NULL))
609 {
610 ERR_load_RSA_strings (); ERR_load_PEM_strings ();
611 slog (L_ERR, _("unable to open public rsa key file '%s': %s"), fname, ERR_error_string (ERR_get_error (), 0));
612 exit (EXIT_FAILURE);
613 }
614
615 require (RSA_blinding_on (node->rsa_key, 0));
616
617 fclose (f);
618 }
619 else
620 {
621 slog (need_keys ? L_ERR : L_NOTICE, _("unable to read public rsa key file '%s': %s"), fname, strerror (errno));
622
623 if (need_keys)
624 exit (EXIT_FAILURE);
625 }
626
627 free (fname);
628
629 (*i)->finalise ();
630 }
631
632 if (::thisnode)
633 {
634 conf.thisnode = conf.find_node (::thisnode);
635
636 if (need_keys)
637 {
638 if (!conf.thisnode)
639 {
640 slog (L_NOTICE, _("local node ('%s') not found in config file, aborting."), ::thisnode);
641 exit (EXIT_FAILURE);
642 }
643
644 if (conf.rsa_key && conf.thisnode->rsa_key)
645 if (BN_cmp (conf.rsa_key->n, conf.thisnode->rsa_key->n) != 0
646 || BN_cmp (conf.rsa_key->e, conf.thisnode->rsa_key->e) != 0)
647 {
648 slog (L_NOTICE, _("private hostkey and public node key mismatch: is '%s' the correct node?"), ::thisnode);
649 exit (EXIT_FAILURE);
650 }
651 }
652 }
653
654 parse_argv ();
655}
656
657void
658configuration_parser::parse_argv ()
659{
660 for (int i = 0; i < argc; ++i)
661 {
662 char *v = argv [i];
663
664 if (!*v)
665 continue;
666
667 char *enode = v;
668
669 while (*enode != '.' && *enode > ' ' && *enode != '=' && *enode)
670 enode++;
671
672 if (*enode != '.')
673 enode = 0;
674
675 if (enode)
676 {
677 char *val = strdup (v);
678 val [enode - v] = 0;
679 node = conf.find_node (val);
680 free (val);
681
682 if (!node)
683 {
684 slog (L_WARN, _("command line option '%s' refers to unknown node, ignoring."), v);
685 continue;
686 }
687 }
688 else
689 node = &conf.default_node;
690
691 const char *warn = parse_line (enode ? enode + 1 : v);
692
693 if (warn)
694 slog (L_WARN, _("%s, while parsing command line option '%s'."), warn, v);
695 }
696}
697
698char *
416char *configuration::config_filename (const char *name, const char *dflt) 699configuration::config_filename (const char *name, const char *dflt)
417{ 700{
418 char *fname; 701 char *fname;
419 702
420 asprintf (&fname, name ? name : dflt, ::thisnode); 703 asprintf (&fname, name ? name : dflt, ::thisnode ? ::thisnode : "<unset>");
421 704
422 if (!ABSOLUTE_PATH (fname)) 705 if (!ABSOLUTE_PATH (fname))
423 { 706 {
424 char *rname = fname; 707 char *rname = fname;
425 asprintf (&fname, "%s/%s", confbase, rname); 708 asprintf (&fname, "%s/%s", confbase, rname);
426 free (rname); 709 free (rname);
427 } 710 }
428 711
429 return fname; 712 return fname;
713}
714
715void
716conf_node::print ()
717{
718 printf ("%4d fe:fd:80:00:0%1x:%02x %c %-8.8s %-10.10s %02x %s%s%d\n",
719 id,
720 id >> 8, id & 0xff,
721 compress ? 'Y' : 'N',
722 connectmode == C_ONDEMAND ? "ondemand"
723 : connectmode == C_NEVER ? "never"
724 : connectmode == C_ALWAYS ? "always"
725 : connectmode == C_DISABLED ? "disabled"
726 : "",
727 nodename,
728 protocols,
729 hostname ? hostname : "",
730 hostname ? ":" : "",
731 hostname ? udp_port : 0
732 );
430} 733}
431 734
432void 735void
433configuration::print () 736configuration::print ()
434{ 737{
… …
438 printf (_("MTU: %d\n"), mtu); 741 printf (_("MTU: %d\n"), mtu);
439 printf (_("rekeying interval: %d\n"), rekey); 742 printf (_("rekeying interval: %d\n"), rekey);
440 printf (_("keepalive interval: %d\n"), keepalive); 743 printf (_("keepalive interval: %d\n"), keepalive);
441 printf (_("interface: %s\n"), ifname); 744 printf (_("interface: %s\n"), ifname);
442 printf (_("primary rsa key: %s\n"), prikeyfile ? prikeyfile : "<default>"); 745 printf (_("primary rsa key: %s\n"), prikeyfile ? prikeyfile : "<default>");
443 printf (_("rsa key size: %d\n"), rsa_key ? RSA_size (rsa_key) : -1); 746 printf (_("rsa key size: %d\n"), rsa_key ? RSA_size (rsa_key) * 8 : -1);
444 printf ("\n"); 747 printf ("\n");
445 748
446 printf ("%4s %-17s %s %-8.8s %-10.10s %s\n", 749 printf ("%4s %-17s %s %-8.8s %-10.10s %04s %s\n",
447 _("ID#"), _("MAC"), _("Com"), _("Conmode"), _("Node"), _("Host:Port")); 750 _("ID#"), _("MAC"), _("Com"), _("Conmode"), _("Node"), _("Prot"), _("Host:Port"));
448 751
449 for (node_vector::iterator i = nodes.begin (); i != nodes.end (); ++i) 752 for (node_vector::iterator i = nodes.begin (); i != nodes.end (); ++i)
450 (*i)->print (); 753 (*i)->print ();
451 754
452 printf ("\n"); 755 printf ("\n");
453} 756}
454 757
455configuration::configuration () 758configuration::configuration ()
456{ 759{
760 asprintf (&confbase, "%s/gvpe", CONFDIR);
761
457 init (); 762 init ();
458} 763}
459 764
460configuration::~configuration () 765configuration::~configuration ()
461{ 766{
462 cleanup (); 767 cleanup ();
463} 768}
464 769
465

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