| 1 |
/* |
| 2 |
conf.C -- configuration code |
| 3 |
Copyright (C) 2003-2008,2011 Marc Lehmann <gvpe@schmorp.de> |
| 4 |
|
| 5 |
This file is part of GVPE. |
| 6 |
|
| 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 |
| 9 |
Free Software Foundation; either version 3 of the License, or (at your |
| 10 |
option) any later version. |
| 11 |
|
| 12 |
This program is distributed in the hope that it will be useful, but |
| 13 |
WITHOUT ANY WARRANTY; without even the implied warranty of |
| 14 |
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General |
| 15 |
Public License for more details. |
| 16 |
|
| 17 |
You should have received a copy of the GNU General Public License along |
| 18 |
with this program; if not, see <http://www.gnu.org/licenses/>. |
| 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. |
| 30 |
*/ |
| 31 |
|
| 32 |
#include "config.h" |
| 33 |
|
| 34 |
#include <cstdio> |
| 35 |
#include <cstdlib> |
| 36 |
#include <cstring> |
| 37 |
|
| 38 |
#include <errno.h> |
| 39 |
#include <netdb.h> |
| 40 |
#include <sys/stat.h> |
| 41 |
#include <sys/types.h> |
| 42 |
#include <unistd.h> |
| 43 |
#include <pwd.h> |
| 44 |
|
| 45 |
#include "netcompat.h" |
| 46 |
|
| 47 |
#include <openssl/err.h> |
| 48 |
#include <openssl/pem.h> |
| 49 |
#include <openssl/rsa.h> |
| 50 |
#include <openssl/rand.h> |
| 51 |
#include <openssl/bn.h> |
| 52 |
|
| 53 |
#include "conf.h" |
| 54 |
#include "slog.h" |
| 55 |
#include "util.h" |
| 56 |
|
| 57 |
char *confbase; |
| 58 |
char *thisnode; |
| 59 |
char *identname; |
| 60 |
|
| 61 |
struct configuration conf; |
| 62 |
|
| 63 |
u8 |
| 64 |
best_protocol (u8 protset) |
| 65 |
{ |
| 66 |
if (protset & PROT_IPv4 ) return PROT_IPv4; |
| 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; |
| 71 |
|
| 72 |
return 0; |
| 73 |
} |
| 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 |
| 130 |
configuration::init () |
| 131 |
{ |
| 132 |
memset (this, 0, sizeof (*this)); |
| 133 |
|
| 134 |
mtu = DEFAULT_MTU; |
| 135 |
nfmark = 0; |
| 136 |
rekey = DEFAULT_REKEY; |
| 137 |
keepalive = DEFAULT_KEEPALIVE; |
| 138 |
llevel = L_INFO; |
| 139 |
ip_proto = IPPROTO_GRE; |
| 140 |
#if ENABLE_ICMP |
| 141 |
icmp_type = ICMP_ECHOREPLY; |
| 142 |
#endif |
| 143 |
|
| 144 |
default_node.udp_port = DEFAULT_UDPPORT; |
| 145 |
default_node.tcp_port = DEFAULT_UDPPORT; // ehrm |
| 146 |
default_node.connectmode = conf_node::C_ALWAYS; |
| 147 |
default_node.compress = true; |
| 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 (""); |
| 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 |
| 170 |
configuration::cleanup () |
| 171 |
{ |
| 172 |
if (rsa_key) |
| 173 |
RSA_free (rsa_key); |
| 174 |
|
| 175 |
rsa_key = 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; |
| 191 |
} |
| 192 |
|
| 193 |
void |
| 194 |
configuration::clear () |
| 195 |
{ |
| 196 |
for (configuration::node_vector::iterator i = nodes.begin(); i != nodes.end(); ++i) |
| 197 |
delete *i; |
| 198 |
|
| 199 |
nodes.clear (); |
| 200 |
|
| 201 |
cleanup (); |
| 202 |
init (); |
| 203 |
} |
| 204 |
|
| 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) |
| 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 |
{ |
| 307 |
char *fname; |
| 308 |
FILE *f; |
| 309 |
|
| 310 |
asprintf (&fname, "%s/pubkey/%s", confbase, node->nodename); |
| 311 |
|
| 312 |
f = fopen (fname, "r"); |
| 313 |
if (f) |
| 314 |
{ |
| 315 |
node->rsa_key = RSA_new (); |
| 316 |
|
| 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; |
| 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 |
{ |
| 576 |
char line [2048]; |
| 577 |
int lineno = 0; |
| 578 |
|
| 579 |
while (fgets (line, sizeof (line), f)) |
| 580 |
{ |
| 581 |
lineno++; |
| 582 |
|
| 583 |
const char *warn = parse_line (line); |
| 584 |
|
| 585 |
if (warn) |
| 586 |
slog (L_WARN, _("%s, at '%s', line %d."), warn, fname, lineno); |
| 587 |
} |
| 588 |
|
| 589 |
fclose (f); |
| 590 |
|
| 591 |
parse_argv (); |
| 592 |
} |
| 593 |
else |
| 594 |
{ |
| 595 |
slog (L_ERR, _("unable to read config file '%s': %s"), fname, strerror (errno)); |
| 596 |
exit (EXIT_FAILURE); |
| 597 |
} |
| 598 |
} |
| 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); |
| 613 |
free (fname); |
| 614 |
|
| 615 |
fname = conf.config_filename (conf.prikeyfile, "hostkey"); |
| 616 |
|
| 617 |
if (FILE *f = fopen (fname, "r")) |
| 618 |
{ |
| 619 |
conf.rsa_key = RSA_new (); |
| 620 |
|
| 621 |
if (!PEM_read_RSAPrivateKey (f, &conf.rsa_key, NULL, NULL)) |
| 622 |
{ |
| 623 |
ERR_load_RSA_strings (); ERR_load_PEM_strings (); |
| 624 |
slog (L_ERR, _("unable to read private rsa key file '%s': %s"), fname, ERR_error_string (ERR_get_error (), 0)); |
| 625 |
exit (EXIT_FAILURE); |
| 626 |
} |
| 627 |
|
| 628 |
require (RSA_blinding_on (conf.rsa_key, 0)); |
| 629 |
|
| 630 |
fclose (f); |
| 631 |
} |
| 632 |
else |
| 633 |
{ |
| 634 |
slog (need_keys ? L_ERR : L_NOTICE, _("unable to open private rsa key file '%s': %s"), fname, strerror (errno)); |
| 635 |
|
| 636 |
if (need_keys) |
| 637 |
exit (EXIT_FAILURE); |
| 638 |
} |
| 639 |
|
| 640 |
free (fname); |
| 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 * |
| 656 |
configuration::config_filename (const char *name, const char *dflt) |
| 657 |
{ |
| 658 |
char *fname; |
| 659 |
|
| 660 |
asprintf (&fname, name ? name : dflt, ::thisnode); |
| 661 |
|
| 662 |
if (!ABSOLUTE_PATH (fname)) |
| 663 |
{ |
| 664 |
char *rname = fname; |
| 665 |
asprintf (&fname, "%s/%s", confbase, rname); |
| 666 |
free (rname); |
| 667 |
} |
| 668 |
|
| 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 |
); |
| 690 |
} |
| 691 |
|
| 692 |
void |
| 693 |
configuration::print () |
| 694 |
{ |
| 695 |
printf (_("\nConfiguration\n\n")); |
| 696 |
printf (_("# of nodes: %d\n"), nodes.size ()); |
| 697 |
printf (_("this node: %s\n"), thisnode ? thisnode->nodename : "<unset>"); |
| 698 |
printf (_("MTU: %d\n"), mtu); |
| 699 |
printf (_("rekeying interval: %d\n"), rekey); |
| 700 |
printf (_("keepalive interval: %d\n"), keepalive); |
| 701 |
printf (_("interface: %s\n"), ifname); |
| 702 |
printf (_("primary rsa key: %s\n"), prikeyfile ? prikeyfile : "<default>"); |
| 703 |
printf (_("rsa key size: %d\n"), rsa_key ? RSA_size (rsa_key) * 8 : -1); |
| 704 |
printf ("\n"); |
| 705 |
|
| 706 |
printf ("%4s %-17s %s %-8.8s %-10.10s %04s %s\n", |
| 707 |
_("ID#"), _("MAC"), _("Com"), _("Conmode"), _("Node"), _("Prot"), _("Host:Port")); |
| 708 |
|
| 709 |
for (node_vector::iterator i = nodes.begin (); i != nodes.end (); ++i) |
| 710 |
(*i)->print (); |
| 711 |
|
| 712 |
printf ("\n"); |
| 713 |
} |
| 714 |
|
| 715 |
configuration::configuration () |
| 716 |
{ |
| 717 |
asprintf (&confbase, "%s/gvpe", CONFDIR); |
| 718 |
|
| 719 |
init (); |
| 720 |
} |
| 721 |
|
| 722 |
configuration::~configuration () |
| 723 |
{ |
| 724 |
cleanup (); |
| 725 |
} |
| 726 |
|
