1 | /* |
1 | /* |
2 | conf.c -- configuration code |
2 | conf.C -- configuration code |
3 | Copyright (C) 2003-2008 Marc Lehmann <gvpe@schmorp.de> |
3 | Copyright (C) 2003-2008,2011 Marc Lehmann <gvpe@schmorp.de> |
4 | |
4 | |
5 | This file is part of GVPE. |
5 | This file is part of GVPE. |
6 | |
6 | |
7 | GVPE is free software; you can redistribute it and/or modify it |
7 | GVPE is free software; you can redistribute it and/or modify it |
8 | under the terms of the GNU General Public License as published by the |
8 | under the terms of the GNU General Public License as published by the |
… | |
… | |
57 | char *thisnode; |
57 | char *thisnode; |
58 | char *identname; |
58 | char *identname; |
59 | |
59 | |
60 | struct configuration conf; |
60 | struct configuration conf; |
61 | |
61 | |
|
|
62 | u8 |
62 | u8 best_protocol (u8 protset) |
63 | best_protocol (u8 protset) |
63 | { |
64 | { |
64 | if (protset & PROT_IPv4 ) return PROT_IPv4; |
65 | if (protset & PROT_IPv4 ) return PROT_IPv4; |
65 | if (protset & PROT_ICMPv4) return PROT_ICMPv4; |
66 | if (protset & PROT_ICMPv4) return PROT_ICMPv4; |
66 | if (protset & PROT_UDPv4 ) return PROT_UDPv4; |
67 | if (protset & PROT_UDPv4 ) return PROT_UDPv4; |
67 | if (protset & PROT_TCPv4 ) return PROT_TCPv4; |
68 | if (protset & PROT_TCPv4 ) return PROT_TCPv4; |
68 | if (protset & PROT_DNSv4 ) return PROT_DNSv4; |
69 | if (protset & PROT_DNSv4 ) return PROT_DNSv4; |
69 | |
70 | |
70 | return 0; |
71 | return 0; |
71 | } |
72 | } |
72 | |
73 | |
|
|
74 | const char * |
73 | const char *strprotocol (u8 protocol) |
75 | strprotocol (u8 protocol) |
74 | { |
76 | { |
75 | if (protocol & PROT_IPv4 ) return "rawip"; |
77 | if (protocol & PROT_IPv4 ) return "rawip"; |
76 | if (protocol & PROT_ICMPv4) return "icmp"; |
78 | if (protocol & PROT_ICMPv4) return "icmp"; |
77 | if (protocol & PROT_UDPv4 ) return "udp"; |
79 | if (protocol & PROT_UDPv4 ) return "udp"; |
78 | if (protocol & PROT_TCPv4 ) return "tcp"; |
80 | if (protocol & PROT_TCPv4 ) return "tcp"; |
… | |
… | |
103 | return false; |
105 | return false; |
104 | |
106 | |
105 | return true; |
107 | return true; |
106 | } |
108 | } |
107 | |
109 | |
108 | void |
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109 | conf_node::print () |
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|
110 | { |
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111 | printf ("%4d fe:fd:80:00:0%1x:%02x %c %-8.8s %-10.10s %s%s%d\n", |
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112 | id, |
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113 | id >> 8, id & 0xff, |
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114 | compress ? 'Y' : 'N', |
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115 | connectmode == C_ONDEMAND ? "ondemand" |
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116 | : connectmode == C_NEVER ? "never" |
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117 | : connectmode == C_ALWAYS ? "always" |
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118 | : connectmode == C_DISABLED ? "disabled" |
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119 | : "", |
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120 | nodename, |
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121 | hostname ? hostname : "", |
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122 | hostname ? ":" : "", |
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123 | hostname ? udp_port : 0 |
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124 | ); |
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125 | } |
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126 | |
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|
127 | conf_node::~conf_node () |
110 | conf_node::~conf_node () |
128 | { |
111 | { |
129 | #if 0 |
112 | #if 0 |
130 | // does not work, because string pointers etc. are shared |
113 | // does not work, because string pointers etc. are shared |
131 | // is not called, however |
114 | // is not called, however |
… | |
… | |
140 | free (dns_hostname); |
123 | free (dns_hostname); |
141 | #endif |
124 | #endif |
142 | #endif |
125 | #endif |
143 | } |
126 | } |
144 | |
127 | |
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128 | void |
145 | void configuration::init () |
129 | configuration::init () |
146 | { |
130 | { |
147 | memset (this, 0, sizeof (*this)); |
131 | memset (this, 0, sizeof (*this)); |
148 | |
132 | |
149 | mtu = DEFAULT_MTU; |
133 | mtu = DEFAULT_MTU; |
|
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134 | nfmark = 0; |
150 | rekey = DEFAULT_REKEY; |
135 | rekey = DEFAULT_REKEY; |
151 | keepalive = DEFAULT_KEEPALIVE; |
136 | keepalive = DEFAULT_KEEPALIVE; |
152 | llevel = L_INFO; |
137 | llevel = L_INFO; |
153 | ip_proto = IPPROTO_GRE; |
138 | ip_proto = IPPROTO_GRE; |
154 | #if ENABLE_ICMP |
139 | #if ENABLE_ICMP |
… | |
… | |
166 | default_node.if_up_data = strdup (""); |
151 | default_node.if_up_data = strdup (""); |
167 | |
152 | |
168 | #if ENABLE_DNS |
153 | #if ENABLE_DNS |
169 | default_node.dns_port = 0; // default is 0 == client |
154 | default_node.dns_port = 0; // default is 0 == client |
170 | |
155 | |
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|
156 | dns_case_preserving = true; |
171 | dns_forw_host = strdup ("127.0.0.1"); |
157 | dns_forw_host = strdup ("127.0.0.1"); |
172 | dns_forw_port = 53; |
158 | dns_forw_port = 53; |
173 | dns_timeout_factor = DEFAULT_DNS_TIMEOUT_FACTOR; |
159 | dns_timeout_factor = DEFAULT_DNS_TIMEOUT_FACTOR; |
174 | dns_send_interval = DEFAULT_DNS_SEND_INTERVAL; |
160 | dns_send_interval = DEFAULT_DNS_SEND_INTERVAL; |
175 | dns_overlap_factor = DEFAULT_DNS_OVERLAP_FACTOR; |
161 | dns_overlap_factor = DEFAULT_DNS_OVERLAP_FACTOR; |
… | |
… | |
177 | #endif |
163 | #endif |
178 | |
164 | |
179 | conf.pidfilename = strdup (LOCALSTATEDIR "/run/gvpe.pid"); |
165 | conf.pidfilename = strdup (LOCALSTATEDIR "/run/gvpe.pid"); |
180 | } |
166 | } |
181 | |
167 | |
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168 | void |
182 | void configuration::cleanup() |
169 | configuration::cleanup () |
183 | { |
170 | { |
184 | if (rsa_key) |
171 | if (rsa_key) |
185 | RSA_free (rsa_key); |
172 | RSA_free (rsa_key); |
186 | |
173 | |
187 | rsa_key = 0; |
174 | rsa_key = 0; |
188 | |
175 | |
189 | free (pidfilename); pidfilename = 0; |
176 | free (pidfilename); pidfilename = 0; |
190 | free (ifname); ifname = 0; |
177 | free (ifname); ifname = 0; |
191 | #if ENABLE_HTTP_PROXY |
178 | #if ENABLE_HTTP_PROXY |
192 | free (proxy_host); proxy_host = 0; |
179 | free (proxy_host); proxy_host = 0; |
193 | free (proxy_auth); proxy_auth = 0; |
180 | free (proxy_auth); proxy_auth = 0; |
194 | #endif |
181 | #endif |
195 | #if ENABLE_DNS |
182 | #if ENABLE_DNS |
196 | free (dns_forw_host); dns_forw_host = 0; |
183 | free (dns_forw_host); dns_forw_host = 0; |
197 | #endif |
184 | #endif |
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185 | free (script_if_up); script_if_up = 0; |
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186 | free (script_node_up); script_node_up = 0; |
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187 | free (script_node_change); script_node_change = 0; |
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188 | free (script_node_down); script_node_down = 0; |
198 | } |
189 | } |
199 | |
190 | |
200 | void |
191 | void |
201 | configuration::clear () |
192 | configuration::clear () |
202 | { |
193 | { |
… | |
… | |
206 | nodes.clear (); |
197 | nodes.clear (); |
207 | |
198 | |
208 | cleanup (); |
199 | cleanup (); |
209 | init (); |
200 | init (); |
210 | } |
201 | } |
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202 | |
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203 | //static bool |
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204 | //is_true (const char *name) |
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205 | //{ |
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206 | //re |
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207 | //} |
211 | |
208 | |
212 | #define parse_bool(target,name,trueval,falseval) do { \ |
209 | #define parse_bool(target,name,trueval,falseval) do { \ |
213 | if (!strcmp (val, "yes")) target = trueval; \ |
210 | if (!strcmp (val, "yes")) target = trueval; \ |
214 | else if (!strcmp (val, "no")) target = falseval; \ |
211 | else if (!strcmp (val, "no")) target = falseval; \ |
215 | else if (!strcmp (val, "true")) target = trueval; \ |
212 | else if (!strcmp (val, "true")) target = trueval; \ |
… | |
… | |
245 | char *val = strtok (NULL, "\t\n\r ="); |
242 | char *val = strtok (NULL, "\t\n\r ="); |
246 | |
243 | |
247 | if (!val || val[0] == '#') |
244 | if (!val || val[0] == '#') |
248 | return _("no value given for variable. (ignored)"); |
245 | return _("no value given for variable. (ignored)"); |
249 | |
246 | |
250 | if (!strcmp (var, "on")) |
247 | else if (!strcmp (var, "on")) |
251 | { |
248 | { |
252 | if (!::thisnode |
249 | if (!::thisnode |
253 | || (val[0] == '!' && strcmp (val + 1, ::thisnode)) |
250 | || (val[0] == '!' && strcmp (val + 1, ::thisnode)) |
254 | || !strcmp (val, ::thisnode)) |
251 | || !strcmp (val, ::thisnode)) |
255 | return parse_line (strtok (NULL, "\n\r")); |
252 | return parse_line (strtok (NULL, "\n\r")); |
256 | else |
253 | } |
257 | return 0; |
254 | |
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|
255 | else if (!strcmp (var, "include")) |
|
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256 | { |
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257 | char *fname = conf.config_filename (val); |
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258 | parse_file (fname); |
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259 | free (fname); |
258 | } |
260 | } |
259 | |
261 | |
260 | // truly global |
262 | // truly global |
261 | if (!strcmp (var, "loglevel")) |
263 | else if (!strcmp (var, "loglevel")) |
262 | { |
264 | { |
263 | loglevel l = string_to_loglevel (val); |
265 | loglevel l = string_to_loglevel (val); |
264 | |
266 | |
265 | if (l == L_NONE) |
267 | if (l == L_NONE) |
266 | return _("unknown loglevel. (skipping)"); |
268 | return _("unknown loglevel. (skipping)"); |
… | |
… | |
330 | conf.rekey = atoi (val); |
332 | conf.rekey = atoi (val); |
331 | else if (!strcmp (var, "keepalive")) |
333 | else if (!strcmp (var, "keepalive")) |
332 | conf.keepalive = atoi (val); |
334 | conf.keepalive = atoi (val); |
333 | else if (!strcmp (var, "mtu")) |
335 | else if (!strcmp (var, "mtu")) |
334 | conf.mtu = atoi (val); |
336 | conf.mtu = atoi (val); |
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337 | else if (!strcmp (var, "nfmark")) |
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338 | conf.nfmark = atoi (val); |
335 | else if (!strcmp (var, "if-up")) |
339 | else if (!strcmp (var, "if-up")) |
336 | free (conf.script_if_up), conf.script_if_up = strdup (val); |
340 | free (conf.script_if_up), conf.script_if_up = strdup (val); |
337 | else if (!strcmp (var, "node-up")) |
341 | else if (!strcmp (var, "node-up")) |
338 | free (conf.script_node_up), conf.script_node_up = strdup (val); |
342 | free (conf.script_node_up), conf.script_node_up = strdup (val); |
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343 | else if (!strcmp (var, "node-change")) |
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344 | free (conf.script_node_change), conf.script_node_change = strdup (val); |
339 | else if (!strcmp (var, "node-down")) |
345 | else if (!strcmp (var, "node-down")) |
340 | free (conf.script_node_down), conf.script_node_down = strdup (val); |
346 | free (conf.script_node_down), conf.script_node_down = strdup (val); |
341 | else if (!strcmp (var, "pid-file")) |
347 | else if (!strcmp (var, "pid-file")) |
342 | free (conf.pidfilename), conf.pidfilename = strdup (val); |
348 | free (conf.pidfilename), conf.pidfilename = strdup (val); |
343 | else if (!strcmp (var, "dns-forw-host")) |
349 | else if (!strcmp (var, "dns-forw-host")) |
… | |
… | |
372 | } |
378 | } |
373 | else if (!strcmp (var, "dns-max-outstanding")) |
379 | else if (!strcmp (var, "dns-max-outstanding")) |
374 | { |
380 | { |
375 | #if ENABLE_DNS |
381 | #if ENABLE_DNS |
376 | conf.dns_max_outstanding = atoi (val); |
382 | conf.dns_max_outstanding = atoi (val); |
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383 | #endif |
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384 | } |
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385 | else if (!strcmp (var, "dns-case-preserving")) |
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386 | { |
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387 | #if ENABLE_DNS |
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388 | parse_bool (conf.dns_case_preserving, "dns-case-preserving", true, false); |
377 | #endif |
389 | #endif |
378 | } |
390 | } |
379 | else if (!strcmp (var, "http-proxy-host")) |
391 | else if (!strcmp (var, "http-proxy-host")) |
380 | { |
392 | { |
381 | #if ENABLE_HTTP_PROXY |
393 | #if ENABLE_HTTP_PROXY |
… | |
… | |
481 | else if (!strcmp (var, "max-queue")) |
493 | else if (!strcmp (var, "max-queue")) |
482 | node->max_queue = atoi (val); |
494 | node->max_queue = atoi (val); |
483 | |
495 | |
484 | // unknown or misplaced |
496 | // unknown or misplaced |
485 | else |
497 | else |
486 | return _("unknown configuration directive. (ignored)"); |
498 | return _("unknown configuration directive - ignored"); |
487 | |
499 | |
488 | return 0; |
500 | return 0; |
489 | } |
501 | } |
490 | |
502 | |
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503 | void |
491 | void conf_node::finalise () |
504 | conf_node::finalise () |
492 | { |
505 | { |
493 | if (max_queue < 1) |
506 | if (max_queue < 1) |
494 | { |
507 | { |
495 | slog (L_WARN, _("%s: max-queue value invalid, setting it to 1."), nodename); |
508 | slog (L_WARN, _("%s: max-queue value invalid, setting it to 1."), nodename); |
496 | max_queue = 1; |
509 | max_queue = 1; |
… | |
… | |
501 | //slog (L_WARN, _("%s: has non-zero router-priority but either 'never' or 'ondemand' as connectmode, setting it to 'always'."), nodename); |
514 | //slog (L_WARN, _("%s: has non-zero router-priority but either 'never' or 'ondemand' as connectmode, setting it to 'always'."), nodename); |
502 | connectmode = C_ALWAYS; |
515 | connectmode = C_ALWAYS; |
503 | } |
516 | } |
504 | } |
517 | } |
505 | |
518 | |
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519 | void |
506 | void configuration_parser::parse_argv () |
520 | configuration_parser::parse_argv () |
507 | { |
521 | { |
508 | for (int i = 0; i < argc; ++i) |
522 | for (int i = 0; i < argc; ++i) |
509 | { |
523 | { |
510 | char *v = argv [i]; |
524 | char *v = argv [i]; |
511 | |
525 | |
… | |
… | |
532 | if (warn) |
546 | if (warn) |
533 | slog (L_WARN, _("%s, while parsing command line option '%s'."), warn, v); |
547 | slog (L_WARN, _("%s, while parsing command line option '%s'."), warn, v); |
534 | |
548 | |
535 | *v = 0; |
549 | *v = 0; |
536 | } |
550 | } |
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551 | } |
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552 | } |
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553 | |
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554 | void |
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555 | configuration_parser::parse_file (const char *fname) |
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556 | { |
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557 | if (FILE *f = fopen (fname, "r")) |
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558 | { |
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559 | char line [2048]; |
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560 | int lineno = 0; |
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561 | node = &conf.default_node; |
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562 | |
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563 | while (fgets (line, sizeof (line), f)) |
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564 | { |
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565 | lineno++; |
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566 | |
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567 | const char *warn = parse_line (line); |
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568 | |
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569 | if (warn) |
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570 | slog (L_WARN, _("%s, at '%s', line %d."), warn, fname, lineno); |
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571 | } |
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572 | |
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573 | fclose (f); |
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574 | |
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575 | parse_argv (); |
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576 | } |
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577 | else |
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578 | { |
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579 | slog (L_ERR, _("unable to read config file '%s': %s"), fname, strerror (errno)); |
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580 | exit (EXIT_FAILURE); |
537 | } |
581 | } |
538 | } |
582 | } |
539 | |
583 | |
540 | configuration_parser::configuration_parser (configuration &conf, |
584 | configuration_parser::configuration_parser (configuration &conf, |
541 | bool need_keys, |
585 | bool need_keys, |
542 | int argc, |
586 | int argc, |
543 | char **argv) |
587 | char **argv) |
544 | : conf (conf),need_keys (need_keys), argc (argc), argv (argv) |
588 | : conf (conf),need_keys (need_keys), argc (argc), argv (argv) |
545 | { |
589 | { |
546 | char *fname; |
590 | char *fname; |
547 | FILE *f; |
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|
548 | |
591 | |
549 | conf.clear (); |
592 | conf.clear (); |
550 | |
593 | |
551 | asprintf (&fname, "%s/gvpe.conf", confbase); |
594 | asprintf (&fname, "%s/gvpe.conf", confbase); |
552 | f = fopen (fname, "r"); |
595 | parse_file (fname); |
553 | |
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554 | if (f) |
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555 | { |
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556 | char line[16384]; |
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557 | int lineno = 0; |
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558 | node = &conf.default_node; |
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559 | |
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560 | while (fgets (line, sizeof (line), f)) |
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561 | { |
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562 | lineno++; |
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563 | |
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564 | const char *warn = parse_line (line); |
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565 | |
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566 | if (warn) |
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567 | slog (L_WARN, _("%s, at '%s', line %d."), warn, fname, lineno); |
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568 | } |
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569 | |
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570 | fclose (f); |
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571 | |
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572 | parse_argv (); |
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573 | } |
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574 | else |
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575 | { |
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576 | slog (L_ERR, _("unable to read config file '%s': %s"), fname, strerror (errno)); |
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577 | exit (EXIT_FAILURE); |
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578 | } |
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579 | |
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580 | free (fname); |
596 | free (fname); |
581 | |
597 | |
582 | fname = conf.config_filename (conf.prikeyfile, "hostkey"); |
598 | fname = conf.config_filename (conf.prikeyfile, "hostkey"); |
583 | |
599 | |
584 | f = fopen (fname, "r"); |
600 | if (FILE *f = fopen (fname, "r")) |
585 | if (f) |
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586 | { |
601 | { |
587 | conf.rsa_key = RSA_new (); |
602 | conf.rsa_key = RSA_new (); |
588 | |
603 | |
589 | if (!PEM_read_RSAPrivateKey (f, &conf.rsa_key, NULL, NULL)) |
604 | if (!PEM_read_RSAPrivateKey (f, &conf.rsa_key, NULL, NULL)) |
590 | { |
605 | { |
… | |
… | |
602 | slog (need_keys ? L_ERR : L_NOTICE, _("unable to open private rsa key file '%s': %s"), fname, strerror (errno)); |
617 | slog (need_keys ? L_ERR : L_NOTICE, _("unable to open private rsa key file '%s': %s"), fname, strerror (errno)); |
603 | |
618 | |
604 | if (need_keys) |
619 | if (need_keys) |
605 | exit (EXIT_FAILURE); |
620 | exit (EXIT_FAILURE); |
606 | } |
621 | } |
|
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622 | |
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623 | free (fname); |
607 | |
624 | |
608 | if (need_keys && ::thisnode |
625 | if (need_keys && ::thisnode |
609 | && conf.rsa_key && conf.thisnode && conf.thisnode->rsa_key) |
626 | && conf.rsa_key && conf.thisnode && conf.thisnode->rsa_key) |
610 | if (BN_cmp (conf.rsa_key->n, conf.thisnode->rsa_key->n) != 0 |
627 | if (BN_cmp (conf.rsa_key->n, conf.thisnode->rsa_key->n) != 0 |
611 | || BN_cmp (conf.rsa_key->e, conf.thisnode->rsa_key->e) != 0) |
628 | || BN_cmp (conf.rsa_key->e, conf.thisnode->rsa_key->e) != 0) |
612 | { |
629 | { |
613 | slog (L_NOTICE, _("private hostkey and public node key mismatch: is '%s' the correct node?"), ::thisnode); |
630 | slog (L_NOTICE, _("private hostkey and public node key mismatch: is '%s' the correct node?"), ::thisnode); |
614 | exit (EXIT_FAILURE); |
631 | exit (EXIT_FAILURE); |
615 | } |
632 | } |
616 | |
633 | |
617 | free (fname); |
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618 | |
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619 | for (configuration::node_vector::iterator i = conf.nodes.begin(); i != conf.nodes.end(); ++i) |
634 | for (configuration::node_vector::iterator i = conf.nodes.begin(); i != conf.nodes.end(); ++i) |
620 | (*i)->finalise (); |
635 | (*i)->finalise (); |
621 | } |
636 | } |
622 | |
637 | |
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|
638 | char * |
623 | char *configuration::config_filename (const char *name, const char *dflt) |
639 | configuration::config_filename (const char *name, const char *dflt) |
624 | { |
640 | { |
625 | char *fname; |
641 | char *fname; |
626 | |
642 | |
627 | asprintf (&fname, name ? name : dflt, ::thisnode); |
643 | asprintf (&fname, name ? name : dflt, ::thisnode); |
628 | |
644 | |
… | |
… | |
632 | asprintf (&fname, "%s/%s", confbase, rname); |
648 | asprintf (&fname, "%s/%s", confbase, rname); |
633 | free (rname); |
649 | free (rname); |
634 | } |
650 | } |
635 | |
651 | |
636 | return fname; |
652 | return fname; |
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653 | } |
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654 | |
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655 | void |
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656 | conf_node::print () |
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657 | { |
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658 | printf ("%4d fe:fd:80:00:0%1x:%02x %c %-8.8s %-10.10s %02x %s%s%d\n", |
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659 | id, |
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660 | id >> 8, id & 0xff, |
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661 | compress ? 'Y' : 'N', |
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662 | connectmode == C_ONDEMAND ? "ondemand" |
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663 | : connectmode == C_NEVER ? "never" |
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664 | : connectmode == C_ALWAYS ? "always" |
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665 | : connectmode == C_DISABLED ? "disabled" |
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666 | : "", |
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667 | nodename, |
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668 | protocols, |
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669 | hostname ? hostname : "", |
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670 | hostname ? ":" : "", |
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671 | hostname ? udp_port : 0 |
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672 | ); |
637 | } |
673 | } |
638 | |
674 | |
639 | void |
675 | void |
640 | configuration::print () |
676 | configuration::print () |
641 | { |
677 | { |
… | |
… | |
648 | printf (_("interface: %s\n"), ifname); |
684 | printf (_("interface: %s\n"), ifname); |
649 | printf (_("primary rsa key: %s\n"), prikeyfile ? prikeyfile : "<default>"); |
685 | printf (_("primary rsa key: %s\n"), prikeyfile ? prikeyfile : "<default>"); |
650 | printf (_("rsa key size: %d\n"), rsa_key ? RSA_size (rsa_key) * 8 : -1); |
686 | printf (_("rsa key size: %d\n"), rsa_key ? RSA_size (rsa_key) * 8 : -1); |
651 | printf ("\n"); |
687 | printf ("\n"); |
652 | |
688 | |
653 | printf ("%4s %-17s %s %-8.8s %-10.10s %s\n", |
689 | printf ("%4s %-17s %s %-8.8s %-10.10s %04s %s\n", |
654 | _("ID#"), _("MAC"), _("Com"), _("Conmode"), _("Node"), _("Host:Port")); |
690 | _("ID#"), _("MAC"), _("Com"), _("Conmode"), _("Node"), _("Prot"), _("Host:Port")); |
655 | |
691 | |
656 | for (node_vector::iterator i = nodes.begin (); i != nodes.end (); ++i) |
692 | for (node_vector::iterator i = nodes.begin (); i != nodes.end (); ++i) |
657 | (*i)->print (); |
693 | (*i)->print (); |
658 | |
694 | |
659 | printf ("\n"); |
695 | printf ("\n"); |
… | |
… | |
669 | configuration::~configuration () |
705 | configuration::~configuration () |
670 | { |
706 | { |
671 | cleanup (); |
707 | cleanup (); |
672 | } |
708 | } |
673 | |
709 | |
674 | |
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