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Comparing gvpe/src/conf.C (file contents):
Revision 1.5 by pcg, Fri Mar 28 04:05:10 2003 UTC vs.
Revision 1.25 by pcg, Mon May 10 20:13:09 2004 UTC

1/* 1/*
2 conf.c -- configuration code 2 conf.c -- configuration code
3 Copyright (C) 1998 Robert van der Meulen 3 Copyright (C) 2003-2004 Marc Lehmann <pcg@goof.com>
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
9 This program is free software; you can redistribute it and/or modify 5 This program is free software; you can redistribute it and/or modify
10 it under the terms of the GNU General Public License as published by 6 it under the terms of the GNU General Public License as published by
11 the Free Software Foundation; either version 2 of the License, or 7 the Free Software Foundation; either version 2 of the License, or
12 (at your option) any later version. 8 (at your option) any later version.
… …
31#include <netdb.h> 27#include <netdb.h>
32#include <sys/stat.h> 28#include <sys/stat.h>
33#include <sys/types.h> 29#include <sys/types.h>
34#include <unistd.h> 30#include <unistd.h>
35 31
36#include <netinet/in.h> 32#include "netcompat.h"
37 33
38#include <openssl/err.h> 34#include <openssl/err.h>
39#include <openssl/pem.h> 35#include <openssl/pem.h>
40#include <openssl/rsa.h> 36#include <openssl/rsa.h>
41#include <openssl/rand.h> 37#include <openssl/rand.h>
38#include <openssl/bn.h>
42 39
43#include "gettext.h" 40#include "gettext.h"
44 41
45#include "conf.h" 42#include "conf.h"
46#include "slog.h" 43#include "slog.h"
47#include "util.h" 44#include "util.h"
48 45
49char *confbase; 46char *confbase;
50char *thisnode; 47char *thisnode;
51char *identname; 48char *identname;
52char *pidfilename;
53 49
54struct configuration conf; 50struct configuration conf;
55 51
56configuration::configuration () 52u8 best_protocol (u8 protset)
57{ 53{
58 init (); 54 if (protset & PROT_IPv4 ) return PROT_IPv4;
59} 55 if (protset & PROT_ICMPv4) return PROT_ICMPv4;
56 if (protset & PROT_UDPv4 ) return PROT_UDPv4;
57 if (protset & PROT_TCPv4 ) return PROT_TCPv4;
58 if (protset & PROT_DNSv4 ) return PROT_DNSv4;
60 59
61configuration::~configuration () 60 return 0;
61}
62
63const char *strprotocol (u8 protocol)
62{ 64{
63 cleanup (); 65 if (protocol & PROT_IPv4 ) return "rawip";
66 if (protocol & PROT_ICMPv4) return "icmp";
67 if (protocol & PROT_UDPv4 ) return "udp";
68 if (protocol & PROT_TCPv4 ) return "tcp";
69 if (protocol & PROT_DNSv4 ) return "dns";
70
71 return "<unknown>";
72}
73
74void
75conf_node::print ()
76{
77 printf ("%4d fe:fd:80:00:0%1x:%02x %c %-8.8s %-10.10s %s%s%d\n",
78 id,
79 id >> 8, id & 0xff,
80 compress ? 'Y' : 'N',
81 connectmode == C_ONDEMAND ? "ondemand" :
82 connectmode == C_NEVER ? "never" :
83 connectmode == C_ALWAYS ? "always" : "",
84 nodename,
85 hostname ? hostname : "",
86 hostname ? ":" : "",
87 hostname ? udp_port : 0
88 );
89}
90
91conf_node::~conf_node ()
92{
93 if (rsa_key)
94 RSA_free (rsa_key);
95
96 free (nodename);
97 free (hostname);
64} 98}
65 99
66void configuration::init () 100void configuration::init ()
67{ 101{
102 asprintf (&confbase, "%s/vpe", CONFDIR);
103
68 memset (this, 0, sizeof (*this)); 104 memset (this, 0, sizeof (*this));
69 105
106 mtu = DEFAULT_MTU;
70 rekey = DEFAULT_REKEY; 107 rekey = DEFAULT_REKEY;
71 keepalive = DEFAULT_KEEPALIVE; 108 keepalive = DEFAULT_KEEPALIVE;
72 llevel = L_INFO; 109 llevel = L_INFO;
73 ip_proto = IPPROTO_GRE; 110 ip_proto = IPPROTO_GRE;
111#if ENABLE_ICMP
112 icmp_type = ICMP_ECHOREPLY;
113#endif
74 114
75 default_node.udp_port = DEFAULT_UDPPORT; 115 default_node.udp_port = DEFAULT_UDPPORT;
116 default_node.tcp_port = DEFAULT_UDPPORT; // ehrm
76 default_node.connectmode = conf_node::C_ALWAYS; 117 default_node.connectmode = conf_node::C_ALWAYS;
77 default_node.compress = true; 118 default_node.compress = true;
78 default_node.can_send = PROT_UDPv4; 119 default_node.protocols = PROT_UDPv4;
79 default_node.can_recv = PROT_IPv4; 120
121 conf.pidfilename = strdup (LOCALSTATEDIR "/run/vped.pid");
80} 122}
81 123
82void configuration::cleanup() 124void configuration::cleanup()
83{ 125{
84 if (rsa_key) 126 if (rsa_key)
85 RSA_free (rsa_key); 127 RSA_free (rsa_key);
86 128
87 free (ifname);
88
89 rsa_key = 0; 129 rsa_key = 0;
90 ifname = 0; 130
131 free (pidfilename); pidfilename = 0;
132 free (ifname); ifname = 0;
133#if ENABLE_HTTP_PROXY
134 free (proxy_host); proxy_host = 0;
135 free (proxy_auth); proxy_auth = 0;
136#endif
91} 137}
92 138
93void 139void
94configuration::clear_config () 140configuration::clear_config ()
95{ 141{
… …
186 else 232 else
187 slog (L_WARN, "'%s': %s, at '%s' line %d", val, UNKNOWN_LOGLEVEL, fname, line); 233 slog (L_WARN, "'%s': %s, at '%s' line %d", val, UNKNOWN_LOGLEVEL, fname, line);
188 } 234 }
189 else if (!strcmp (var, "ip-proto")) 235 else if (!strcmp (var, "ip-proto"))
190 ip_proto = atoi (val); 236 ip_proto = atoi (val);
237 else if (!strcmp (var, "icmp-type"))
238 {
239#if ENABLE_ICMP
240 icmp_type = atoi (val);
241#endif
242 }
191 243
192 // per config 244 // per config
193 else if (!strcmp (var, "node")) 245 else if (!strcmp (var, "node"))
194 { 246 {
195 default_node.id++; 247 default_node.id++;
… …
213 265
214 if (!PEM_read_RSAPublicKey(f, &node->rsa_key, NULL, NULL)) 266 if (!PEM_read_RSAPublicKey(f, &node->rsa_key, NULL, NULL))
215 { 267 {
216 ERR_load_RSA_strings (); ERR_load_PEM_strings (); 268 ERR_load_RSA_strings (); ERR_load_PEM_strings ();
217 slog (L_ERR, _("unable to open public rsa key file '%s': %s"), fname, ERR_error_string (ERR_get_error (), 0)); 269 slog (L_ERR, _("unable to open public rsa key file '%s': %s"), fname, ERR_error_string (ERR_get_error (), 0));
218 exit (1); 270 exit (EXIT_FAILURE);
219 } 271 }
220 272
221 RSA_blinding_on (node->rsa_key, 0); 273 require (RSA_blinding_on (node->rsa_key, 0));
222 274
223 fclose (f); 275 fclose (f);
224 } 276 }
225 else 277 else
226 { 278 {
227 slog (need_keys ? L_ERR : L_NOTICE, _("unable to read public rsa key file '%s': %s"), fname, strerror (errno)); 279 slog (need_keys ? L_ERR : L_NOTICE, _("unable to read public rsa key file '%s': %s"), fname, strerror (errno));
228 280
229 if (need_keys) 281 if (need_keys)
230 exit (1); 282 exit (EXIT_FAILURE);
231 } 283 }
232 284
233 free (fname); 285 free (fname);
234 } 286 }
235 287
236 if (!::thisnode || !strcmp (node->nodename, ::thisnode)) 288 if (::thisnode && !strcmp (node->nodename, ::thisnode))
237 thisnode = node; 289 thisnode = node;
238 } 290 }
239 else if (!strcmp (var, "private-key")) 291 else if (!strcmp (var, "private-key"))
240 prikeyfile = strdup (val); 292 free (prikeyfile), prikeyfile = strdup (val);
241 else if (!strcmp (var, "ifpersist")) 293 else if (!strcmp (var, "ifpersist"))
242 { 294 {
243 parse_bool (ifpersist, "ifpersist", true, false); 295 parse_bool (ifpersist, "ifpersist", true, false);
244 } 296 }
245 else if (!strcmp (var, "ifname")) 297 else if (!strcmp (var, "ifname"))
246 ifname = strdup (val); 298 free (ifname), ifname = strdup (val);
247 else if (!strcmp (var, "rekey")) 299 else if (!strcmp (var, "rekey"))
248 rekey = atoi (val); 300 rekey = atoi (val);
249 else if (!strcmp (var, "keepalive")) 301 else if (!strcmp (var, "keepalive"))
250 keepalive = atoi (val); 302 keepalive = atoi (val);
251 else if (!strcmp (var, "mtu")) 303 else if (!strcmp (var, "mtu"))
252 mtu = atoi (val); 304 mtu = atoi (val);
253 else if (!strcmp (var, "if-up")) 305 else if (!strcmp (var, "if-up"))
254 script_if_up = strdup (val); 306 free (script_if_up), script_if_up = strdup (val);
255 else if (!strcmp (var, "node-up")) 307 else if (!strcmp (var, "node-up"))
256 script_node_up = strdup (val); 308 free (script_node_up), script_node_up = strdup (val);
257 else if (!strcmp (var, "node-down")) 309 else if (!strcmp (var, "node-down"))
258 script_node_down = strdup (val); 310 free (script_node_down), script_node_down = strdup (val);
311 else if (!strcmp (var, "pid-file"))
312 free (pidfilename), pidfilename = strdup (val);
313 else if (!strcmp (var, "http-proxy-host"))
314 {
315#if ENABLE_HTTP_PROXY
316 free (proxy_host), proxy_host = strdup (val);
317#endif
318 }
319 else if (!strcmp (var, "http-proxy-port"))
320 {
321#if ENABLE_HTTP_PROXY
322 proxy_port = atoi (val);
323#endif
324 }
325 else if (!strcmp (var, "http-proxy-auth"))
326 {
327#if ENABLE_HTTP_PROXY
328 proxy_auth = (char *)base64_encode ((const u8 *)val, strlen (val));
329#endif
330 }
259 331
260 /* node-specific, non-defaultable */ 332 /* node-specific, non-defaultable */
261 else if (node != &default_node && !strcmp (var, "hostname")) 333 else if (node != &default_node && !strcmp (var, "hostname"))
262 {
263 free (node->hostname);
264 node->hostname = strdup (val); 334 free (node->hostname), node->hostname = strdup (val);
265 }
266 335
267 /* node-specific, defaultable */ 336 /* node-specific, defaultable */
268 else if (!strcmp (var, "udp-port")) 337 else if (!strcmp (var, "udp-port"))
269 node->udp_port = atoi (val); 338 node->udp_port = atoi (val);
339 else if (!strcmp (var, "tcp-port"))
340 node->tcp_port = atoi (val);
341 else if (!strcmp (var, "dns-port"))
342 node->dns_port = atoi (val);
270 else if (!strcmp (var, "router-priority")) 343 else if (!strcmp (var, "router-priority"))
271 node->routerprio = atoi (val); 344 node->routerprio = atoi (val);
272 else if (!strcmp (var, "connect")) 345 else if (!strcmp (var, "connect"))
273 { 346 {
274 if (!strcmp (val, "ondemand")) 347 if (!strcmp (val, "ondemand"))
… …
291 else if (!strcmp (var, "compress")) 364 else if (!strcmp (var, "compress"))
292 { 365 {
293 parse_bool (node->compress, "compress", true, false); 366 parse_bool (node->compress, "compress", true, false);
294 } 367 }
295 // all these bool options really really cost a lot of executable size! 368 // all these bool options really really cost a lot of executable size!
369 else if (!strcmp (var, "enable-tcp"))
370 {
371#if ENABLE_TCP
372 u8 v; parse_bool (v, "enable-tcp" , PROT_TCPv4, 0); node->protocols = (node->protocols & ~PROT_TCPv4) | v;
373#endif
374 }
375 else if (!strcmp (var, "enable-icmp"))
376 {
377#if ENABLE_ICMP
378 u8 v; parse_bool (v, "enable-icmp" , PROT_ICMPv4, 0); node->protocols = (node->protocols & ~PROT_ICMPv4) | v;
379#endif
380 }
381 else if (!strcmp (var, "enable-dns"))
382 {
383#if ENABLE_DNS
384 u8 v; parse_bool (v, "enable-dns" , PROT_DNSv4, 0); node->protocols = (node->protocols & ~PROT_DNSv4) | v;
385#endif
386 }
296 else if (!strcmp (var, "can-send-udp")) 387 else if (!strcmp (var, "enable-udp"))
388 {
389 u8 v; parse_bool (v, "enable-udp" , PROT_UDPv4, 0); node->protocols = (node->protocols & ~PROT_UDPv4) | v;
390 }
391 else if (!strcmp (var, "enable-rawip"))
297 { 392 {;
298 u8 v; parse_bool (v, "can-send-udp", PROT_UDPv4, 0); node->can_send = (node->can_send & ~PROT_UDPv4) | v;
299 }
300 else if (!strcmp (var, "can-recv-udp"))
301 {
302 u8 v; parse_bool (v, "can-recv-udp", PROT_UDPv4, 0); node->can_recv = (node->can_recv & ~PROT_UDPv4) | v;
303 }
304 else if (!strcmp (var, "can-send-rawip"))
305 {
306 u8 v; parse_bool (v, "can-send-rawip", PROT_IPv4, 0); node->can_send = (node->can_send & ~PROT_IPv4) | v; 393 u8 v; parse_bool (v, "enable-rawip", PROT_IPv4, 0); node->protocols = (node->protocols & ~PROT_IPv4 ) | v;
307 }
308 else if (!strcmp (var, "can-recv-rawip"))
309 {
310 u8 v; parse_bool (v, "can-recv-rawip", PROT_IPv4, 0); node->can_recv = (node->can_recv & ~PROT_IPv4) | v;
311 } 394 }
312 395
313 // unknown or misplaced 396 // unknown or misplaced
314 else 397 else
315 {
316 slog (L_WARN, 398 slog (L_WARN,
317 _("unknown or misplaced variable `%s', at '%s' line %d"), 399 _("unknown or misplaced variable `%s', at '%s' line %d"),
318 var, fname, lineno); 400 var, fname, lineno);
319 }
320 } 401 }
321 402
322 fclose (f); 403 fclose (f);
323 } 404 }
324 else 405 else
325 { 406 {
326 slog (L_ERR, _("unable to read config file '%s': %s"), fname, strerror (errno)); 407 slog (L_ERR, _("unable to read config file '%s': %s"), fname, strerror (errno));
327 exit (1); 408 exit (EXIT_FAILURE);
328 } 409 }
329 410
330 free (fname); 411 free (fname);
331 412
332 fname = config_filename (prikeyfile, "hostkey"); 413 fname = config_filename (prikeyfile, "hostkey");
… …
338 419
339 if (!PEM_read_RSAPrivateKey (f, &rsa_key, NULL, NULL)) 420 if (!PEM_read_RSAPrivateKey (f, &rsa_key, NULL, NULL))
340 { 421 {
341 ERR_load_RSA_strings (); ERR_load_PEM_strings (); 422 ERR_load_RSA_strings (); ERR_load_PEM_strings ();
342 slog (L_ERR, _("unable to read private rsa key file '%s': %s"), fname, ERR_error_string (ERR_get_error (), 0)); 423 slog (L_ERR, _("unable to read private rsa key file '%s': %s"), fname, ERR_error_string (ERR_get_error (), 0));
343 exit (1); 424 exit (EXIT_FAILURE);
344 } 425 }
345 426
346 RSA_blinding_on (rsa_key, 0); 427 require (RSA_blinding_on (rsa_key, 0));
347 428
348 fclose (f); 429 fclose (f);
349 } 430 }
350 else 431 else
351 { 432 {
352 slog (need_keys ? L_ERR : L_NOTICE, _("unable to open private rsa key file '%s': %s"), fname, strerror (errno)); 433 slog (need_keys ? L_ERR : L_NOTICE, _("unable to open private rsa key file '%s': %s"), fname, strerror (errno));
353 434
354 if (need_keys) 435 if (need_keys)
355 exit (1); 436 exit (EXIT_FAILURE);
356 } 437 }
438
439 if (need_keys && ::thisnode
440 && rsa_key && thisnode && thisnode->rsa_key)
441 if (BN_cmp (rsa_key->n, thisnode->rsa_key->n) != 0
442 || BN_cmp (rsa_key->e, thisnode->rsa_key->e) != 0)
443 {
444 slog (L_NOTICE, _("private hostkey and public node key mismatch: is '%s' the correct node?"), ::thisnode);
445 exit (EXIT_FAILURE);
446 }
357 447
358 free (fname); 448 free (fname);
359} 449}
360 450
361char *configuration::config_filename (const char *name, const char *dflt) 451char *configuration::config_filename (const char *name, const char *dflt)
… …
383 printf (_("MTU: %d\n"), mtu); 473 printf (_("MTU: %d\n"), mtu);
384 printf (_("rekeying interval: %d\n"), rekey); 474 printf (_("rekeying interval: %d\n"), rekey);
385 printf (_("keepalive interval: %d\n"), keepalive); 475 printf (_("keepalive interval: %d\n"), keepalive);
386 printf (_("interface: %s\n"), ifname); 476 printf (_("interface: %s\n"), ifname);
387 printf (_("primary rsa key: %s\n"), prikeyfile ? prikeyfile : "<default>"); 477 printf (_("primary rsa key: %s\n"), prikeyfile ? prikeyfile : "<default>");
388 printf (_("rsa key size: %d\n"), rsa_key ? RSA_size (rsa_key) : -1); 478 printf (_("rsa key size: %d\n"), rsa_key ? RSA_size (rsa_key) * 8 : -1);
389 printf ("\n"); 479 printf ("\n");
390 480
391 printf ("%4s %-17s %s %-8.8s %-10.10s %s\n", 481 printf ("%4s %-17s %s %-8.8s %-10.10s %s\n",
392 _("ID#"), _("MAC"), _("Com"), _("Conmode"), _("Node"), _("Host:Port")); 482 _("ID#"), _("MAC"), _("Com"), _("Conmode"), _("Node"), _("Host:Port"));
393 483
… …
395 (*i)->print (); 485 (*i)->print ();
396 486
397 printf ("\n"); 487 printf ("\n");
398} 488}
399 489
400void 490configuration::configuration ()
401conf_node::print ()
402{ 491{
403 printf ("%4d fe:fd:80:00:0%1x:%02x %c %-8.8s %-10.10s %s%s%d\n", 492 init ();
404 id,
405 id >> 8, id & 0xff,
406 compress ? 'Y' : 'N',
407 connectmode == C_ONDEMAND ? "ondemand" :
408 connectmode == C_NEVER ? "never" :
409 connectmode == C_ALWAYS ? "always" : "",
410 nodename,
411 hostname ? hostname : "",
412 hostname ? ":" : "",
413 hostname ? udp_port : 0
414 );
415} 493}
416 494
495configuration::~configuration ()
496{
497 cleanup ();
498}
499
500

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