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