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Comparing gvpe/src/vpn.C (file contents):
Revision 1.23 by pcg, Thu Jan 29 18:55:10 2004 UTC vs.
Revision 1.29 by pcg, Fri Mar 4 04:52:38 2005 UTC

1/* 1/*
2 vpn.C -- handle the protocol, encryption, handshaking etc. 2 vpn.C -- handle the protocol, encryption, handshaking etc.
3 Copyright (C) 2003-2004 Marc Lehmann <pcg@goof.com> 3 Copyright (C) 2003-2005 Marc Lehmann <gvpe@schmorp.de>
4 4
5 This file is part of GVPE.
6
5 This program is free software; you can redistribute it and/or modify 7 GVPE is free software; you can redistribute it and/or modify
6 it under the terms of the GNU General Public License as published by 8 it under the terms of the GNU General Public License as published by
7 the Free Software Foundation; either version 2 of the License, or 9 the Free Software Foundation; either version 2 of the License, or
8 (at your option) any later version. 10 (at your option) any later version.
9 11
10 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,
11 but WITHOUT ANY WARRANTY; without even the implied warranty of 13 but WITHOUT ANY WARRANTY; without even the implied warranty of
12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13 GNU General Public License for more details. 15 GNU General Public License for more details.
14 16
15 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
16 along with this program; if not, write to the Free Software 18 along with gvpe; if not, write to the Free Software
17 Foundation, Inc. 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA 19 Foundation, Inc. 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
18*/ 20*/
19 21
20#include "config.h" 22#include "config.h"
21 23
… …
223 225
224 tcpv4_ev_watcher.start (tcpv4_fd, EVENT_READ); 226 tcpv4_ev_watcher.start (tcpv4_fd, EVENT_READ);
225 } 227 }
226#endif 228#endif
227 229
230#if ENABLE_DNS
231 if (THISNODE->protocols & PROT_DNSv4)
232 {
233 dns_forwarder.set (::conf.dns_forw_host, ::conf.dns_forw_port, PROT_DNSv4);
234
235 dnsv4_fd = socket (PF_INET, SOCK_DGRAM, IPPROTO_UDP);
236
237 if (dnsv4_fd < 0)
238 return -1;
239
240 // standard daemon practise...
241 {
242 int oval = 1;
243 setsockopt (tcpv4_fd, SOL_SOCKET, SO_REUSEADDR, &oval, sizeof oval);
244 }
245
246 sockinfo si (THISNODE, PROT_DNSv4);
247
248 if (bind (dnsv4_fd, si.sav4 (), si.salenv4 ()))
249 {
250 slog (L_ERR, _("can't bind dnsv4 on %s: %s"), (const char *)si, strerror (errno));
251 exit (EXIT_FAILURE);
252 }
253
254 dnsv4_ev_watcher.start (dnsv4_fd, EVENT_READ);
255 }
256#endif
257
228 tap = new tap_device (); 258 tap = new tap_device ();
229 if (!tap) //D this, of course, never catches 259 if (!tap) //D this, of course, never catches
230 { 260 {
231 slog (L_ERR, _("cannot create network interface '%s'"), conf.ifname); 261 slog (L_ERR, _("cannot create network interface '%s'"), conf.ifname);
232 exit (EXIT_FAILURE); 262 exit (EXIT_FAILURE);
… …
237 tap_ev_watcher.start (tap->fd, EVENT_READ); 267 tap_ev_watcher.start (tap->fd, EVENT_READ);
238 268
239 reconnect_all (); 269 reconnect_all ();
240 270
241 return 0; 271 return 0;
242}
243
244// send a vpn packet out to other hosts
245bool
246vpn::send_vpn_packet (vpn_packet *pkt, const sockinfo &si, int tos)
247{
248 switch (si.prot)
249 {
250 case PROT_IPv4:
251 return send_ipv4_packet (pkt, si, tos);
252
253 case PROT_UDPv4:
254 return send_udpv4_packet (pkt, si, tos);
255
256#if ENABLE_TCP
257 case PROT_TCPv4:
258 return send_tcpv4_packet (pkt, si, tos);
259#endif
260
261#if ENABLE_ICMP
262 case PROT_ICMPv4:
263 return send_icmpv4_packet (pkt, si, tos);
264#endif
265
266 default:
267 slog (L_CRIT, _("%s: FATAL: trying to send packet with unsupported protocol"), (const char *)si);
268 return false;
269 }
270} 272}
271 273
272bool 274bool
273vpn::send_ipv4_packet (vpn_packet *pkt, const sockinfo &si, int tos) 275vpn::send_ipv4_packet (vpn_packet *pkt, const sockinfo &si, int tos)
274{ 276{
… …
572 if (events & EVENT_SHUTDOWN) 574 if (events & EVENT_SHUTDOWN)
573 { 575 {
574 slog (L_INFO, _("preparing shutdown...")); 576 slog (L_INFO, _("preparing shutdown..."));
575 577
576 shutdown_all (); 578 shutdown_all ();
577 remove_pid (pidfilename); 579 remove_pid (conf.pidfilename);
578 slog (L_INFO, _("terminating")); 580 slog (L_INFO, _("terminating"));
579 exit (EXIT_SUCCESS); 581 exit (EXIT_SUCCESS);
580 } 582 }
581 583
582 if (events & EVENT_RECONNECT) 584 if (events & EVENT_RECONNECT)
… …
608 connection_init (); 610 connection_init ();
609 611
610 for (configuration::node_vector::iterator i = conf.nodes.begin (); 612 for (configuration::node_vector::iterator i = conf.nodes.begin ();
611 i != conf.nodes.end (); ++i) 613 i != conf.nodes.end (); ++i)
612 { 614 {
613 connection *conn = new connection (this); 615 connection *conn = new connection (this, *i);
614
615 conn->conf = *i;
616 conns.push_back (conn); 616 conns.push_back (conn);
617
618 conn->establish_connection (); 617 conn->establish_connection ();
619 } 618 }
620} 619}
621 620
622connection *vpn::find_router () 621connection *vpn::find_router ()
… …
685, tcpv4_ev_watcher (this, &vpn::tcpv4_ev) 684, tcpv4_ev_watcher (this, &vpn::tcpv4_ev)
686#endif 685#endif
687#if ENABLE_ICMP 686#if ENABLE_ICMP
688, icmpv4_ev_watcher(this, &vpn::icmpv4_ev) 687, icmpv4_ev_watcher(this, &vpn::icmpv4_ev)
689#endif 688#endif
689#if ENABLE_DNS
690, dnsv4_ev_watcher (this, &vpn::dnsv4_ev)
691#endif
690, tap_ev_watcher (this, &vpn::tap_ev) 692, tap_ev_watcher (this, &vpn::tap_ev)
691{ 693{
692} 694}
693 695
694vpn::~vpn () 696vpn::~vpn ()

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