[ViewVC] Diff of: cvs/gvpe/src/vpn.C

Comparing gvpe/src/vpn.C (file contents):
Revision 1.16 by pcg, Tue Oct 14 19:59:16 2003 UTC vs.
Revision 1.35 by pcg, Fri Apr 8 16:12:49 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) 2003-2005 Marc Lehmann <gvpe@schmorp.de>
3		4
		5	This file is part of GVPE.
		6
4	This program is free software; you can redistribute it and/or modify	7	GVPE is free software; you can redistribute it and/or modify
5	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
6	the Free Software Foundation; either version 2 of the License, or	9	the Free Software Foundation; either version 2 of the License, or
7	(at your option) any later version.	10	(at your option) any later version.
8		11
9	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,
10	but WITHOUT ANY WARRANTY; without even the implied warranty of	13	but WITHOUT ANY WARRANTY; without even the implied warranty of
11	MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the	14	MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12	GNU General Public License for more details.	15	GNU General Public License for more details.
13		16
14	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
15	along with this program; if not, write to the Free Software	18	along with gvpe; if not, write to the Free Software
16	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
17	*/	20	*/
18		21
19	#include "config.h"	22	#include "config.h"
20		23
21	#include <list>	24	#include <list>
22		25
		26	#include <cstdio>
		27	#include <cstring>
23	#include <cstdlib>	28	#include <cstdlib>
24	#include <cstring>
25	#include <cstdio>
26		29
27	#include <sys/types.h>	30	#include <sys/types.h>
28	#include <sys/socket.h>	31	#include <sys/socket.h>
29	#include <sys/wait.h>	32	#include <sys/wait.h>
30	#include <errno.h>	33	#include <errno.h>
39		42
40	#include "connection.h"	43	#include "connection.h"
41	#include "util.h"	44	#include "util.h"
42	#include "vpn.h"	45	#include "vpn.h"
43		46
		47	vpn network; // THE vpn (bad design...)
		48
44	/////////////////////////////////////////////////////////////////////////////	49	/////////////////////////////////////////////////////////////////////////////
45		50
46	const char *vpn::script_if_up ()	51	void
		52	vpn::script_init_env ()
47	{	53	{
48	// the tunnel device mtu should be the physical mtu - overhead	54	// the tunnel device mtu should be the physical mtu - overhead
49	// the tricky part is rounding to the cipher key blocksize	55	// the tricky part is rounding to the cipher key blocksize
50	int mtu = conf.mtu - ETH_OVERHEAD - VPE_OVERHEAD - MAX_OVERHEAD;	56	int mtu = conf.mtu - ETH_OVERHEAD - VPE_OVERHEAD - MAX_OVERHEAD;
51	mtu += ETH_OVERHEAD - 6 - 6; // now we have the data portion	57	mtu += ETH_OVERHEAD - 6 - 6; // now we have the data portion
52	mtu -= mtu % EVP_CIPHER_block_size (CIPHER); // round	58	mtu -= mtu % EVP_CIPHER_block_size (CIPHER); // round
53	mtu -= ETH_OVERHEAD - 6 - 6; // and get interface mtu again	59	mtu -= ETH_OVERHEAD - 6 - 6; // and get interface mtu again
54		60
55	char *env;	61	char *env;
56	asprintf (&env, "CONFBASE=%s", confbase);	62	asprintf (&env, "CONFBASE=%s", confbase); putenv (env);
57	putenv (env);
58	asprintf (&env, "NODENAME=%s", THISNODE->nodename);
59	putenv (env);
60	asprintf (&env, "NODEID=%d", THISNODE->id);
61	putenv (env);
62	asprintf (&env, "IFNAME=%s", tap->interface ());	63	asprintf (&env, "IFNAME=%s", tap->interface ()); putenv (env);
63	putenv (env);	64	asprintf (&env, "IFTYPE=%s", IFTYPE); putenv (env);
		65	asprintf (&env, "IFSUBTYPE=%s", IFSUBTYPE); putenv (env);
64	asprintf (&env, "MTU=%d", mtu);	66	asprintf (&env, "MTU=%d", mtu); putenv (env);
65	putenv (env);	67	asprintf (&env, "NODES=%d", conns.size ()); putenv (env);
66	asprintf (&env, "MAC=%02x:%02x:%02x:%02x:%02x:%02x",	68	asprintf (&env, "NODEID=%d", THISNODE->id); putenv (env);
67	0xfe, 0xfd, 0x80, 0x00, THISNODE->id >> 8,
68	THISNODE->id & 0xff);
69	putenv (env);
70		69
		70	conns [THISNODE->id - 1]->script_init_env ("");
		71
		72	for (conns_vector::iterator c = conns.begin (); c != conns.end (); ++c)
		73	{
		74	char ext[16];
		75	snprintf (ext, 16, "_%d", (*c)->conf->id);
		76	(*c)->script_init_env (ext);
		77	}
		78	}
		79
		80	const char *vpn::script_if_init ()
		81	{
		82	script_init_env ();
		83
		84	return tap->if_up ();
		85	}
		86
		87	const char *vpn::script_if_up ()
		88	{
		89	script_init_env ();
		90
		91	char *filename;
		92	asprintf (&filename,
		93	"%s/%s",
		94	confbase,
71	return ::conf.script_if_up ? ::conf.script_if_up : "if-up";	95	::conf.script_if_up ? ::conf.script_if_up : "if-up");
		96
		97	return filename;
72	}	98	}
73		99
74	int	100	int
75	vpn::setup ()	101	vpn::setup ()
76	{	102	{
…		…
98	sockinfo si (THISNODE, PROT_IPv4);	124	sockinfo si (THISNODE, PROT_IPv4);
99		125
100	if (bind (ipv4_fd, si.sav4 (), si.salenv4 ()))	126	if (bind (ipv4_fd, si.sav4 (), si.salenv4 ()))
101	{	127	{
102	slog (L_ERR, _("can't bind ipv4 socket on %s: %s"), (const char *)si, strerror (errno));	128	slog (L_ERR, _("can't bind ipv4 socket on %s: %s"), (const char *)si, strerror (errno));
103	exit (1);	129	exit (EXIT_FAILURE);
104	}	130	}
105		131
106	ipv4_ev_watcher.start (ipv4_fd, POLLIN);	132	ipv4_ev_watcher.start (ipv4_fd, EVENT_READ);
107	}	133	}
108		134
109	udpv4_fd = -1;	135	udpv4_fd = -1;
110		136
111	if (THISNODE->protocols & PROT_UDPv4 && THISNODE->udp_port)	137	if (THISNODE->protocols & PROT_UDPv4 && THISNODE->udp_port)
…		…
136	sockinfo si (THISNODE, PROT_UDPv4);	162	sockinfo si (THISNODE, PROT_UDPv4);
137		163
138	if (bind (udpv4_fd, si.sav4 (), si.salenv4 ()))	164	if (bind (udpv4_fd, si.sav4 (), si.salenv4 ()))
139	{	165	{
140	slog (L_ERR, _("can't bind udpv4 on %s: %s"), (const char *)si, strerror (errno));	166	slog (L_ERR, _("can't bind udpv4 on %s: %s"), (const char *)si, strerror (errno));
141	exit (1);	167	exit (EXIT_FAILURE);
142	}	168	}
143		169
144	udpv4_ev_watcher.start (udpv4_fd, POLLIN);	170	udpv4_ev_watcher.start (udpv4_fd, EVENT_READ);
145	}	171	}
146		172
147	icmpv4_fd = -1;	173	icmpv4_fd = -1;
148		174
149	#if ENABLE_ICMP	175	#if ENABLE_ICMP
…		…
180	sockinfo si (THISNODE, PROT_ICMPv4);	206	sockinfo si (THISNODE, PROT_ICMPv4);
181		207
182	if (bind (icmpv4_fd, si.sav4 (), si.salenv4 ()))	208	if (bind (icmpv4_fd, si.sav4 (), si.salenv4 ()))
183	{	209	{
184	slog (L_ERR, _("can't bind icmpv4 on %s: %s"), (const char *)si, strerror (errno));	210	slog (L_ERR, _("can't bind icmpv4 on %s: %s"), (const char *)si, strerror (errno));
185	exit (1);	211	exit (EXIT_FAILURE);
186	}	212	}
187		213
188	icmpv4_ev_watcher.start (icmpv4_fd, POLLIN);	214	icmpv4_ev_watcher.start (icmpv4_fd, EVENT_READ);
189	}	215	}
190	#endif	216	#endif
191		217
192	tcpv4_fd = -1;	218	tcpv4_fd = -1;
193		219
…		…
210	sockinfo si (THISNODE, PROT_TCPv4);	236	sockinfo si (THISNODE, PROT_TCPv4);
211		237
212	if (bind (tcpv4_fd, si.sav4 (), si.salenv4 ()))	238	if (bind (tcpv4_fd, si.sav4 (), si.salenv4 ()))
213	{	239	{
214	slog (L_ERR, _("can't bind tcpv4 on %s: %s"), (const char *)si, strerror (errno));	240	slog (L_ERR, _("can't bind tcpv4 on %s: %s"), (const char *)si, strerror (errno));
215	exit (1);	241	exit (EXIT_FAILURE);
216	}	242	}
217		243
218	if (listen (tcpv4_fd, 5))	244	if (listen (tcpv4_fd, 5))
219	{	245	{
220	slog (L_ERR, _("can't listen tcpv4 on %s: %s"), (const char *)si, strerror (errno));	246	slog (L_ERR, _("can't listen tcpv4 on %s: %s"), (const char *)si, strerror (errno));
221	exit (1);	247	exit (EXIT_FAILURE);
		248	}
		249
		250	tcpv4_ev_watcher.start (tcpv4_fd, EVENT_READ);
		251	}
		252	#endif
		253
		254	#if ENABLE_DNS
		255	if (THISNODE->protocols & PROT_DNSv4)
		256	{
		257	dns_forwarder.set (::conf.dns_forw_host, ::conf.dns_forw_port, PROT_DNSv4);
		258
		259	dnsv4_fd = socket (PF_INET, SOCK_DGRAM, IPPROTO_UDP);
		260
		261	if (dnsv4_fd < 0)
		262	return -1;
		263
		264	# if defined(SOL_IP) && defined(IP_MTU_DISCOVER)
		265	// this I really consider a linux bug. I am neither connected
		266	// nor do I fragment myself. Linux still sets DF and doesn't
		267	// fragment for me sometimes.
		268	{
		269	int oval = IP_PMTUDISC_DONT;
		270	setsockopt (dnsv4_fd, SOL_IP, IP_MTU_DISCOVER, &oval, sizeof oval);
222	}	271	}
223
224	tcpv4_ev_watcher.start (tcpv4_fd, POLLIN);
225	}
226	#endif	272	# endif
		273
		274	// standard daemon practise...
		275	{
		276	int oval = 1;
		277	setsockopt (dnsv4_fd, SOL_SOCKET, SO_REUSEADDR, &oval, sizeof oval);
		278	}
		279
		280	sockinfo si (THISNODE->dns_hostname,
		281	THISNODE->dns_hostname ? THISNODE->dns_port : 0,
		282	PROT_DNSv4);
		283
		284	if (bind (dnsv4_fd, si.sav4 (), si.salenv4 ()))
		285	{
		286	slog (L_ERR, _("can't bind dnsv4 on %s: %s"), (const char *)si, strerror (errno));
		287	exit (EXIT_FAILURE);
		288	}
		289
		290	dnsv4_ev_watcher.start (dnsv4_fd, EVENT_READ);
		291	}
		292	#endif
		293
		294	/////////////////////////////////////////////////////////////////////////////
		295
		296	reconnect_all ();
		297
		298	/////////////////////////////////////////////////////////////////////////////
227		299
228	tap = new tap_device ();	300	tap = new tap_device ();
229	if (!tap) //D this, of course, never catches	301	if (!tap) //D this, of course, never catches
230	{	302	{
231	slog (L_ERR, _("cannot create network interface '%s'"), conf.ifname);	303	slog (L_ERR, _("cannot create network interface '%s'"), conf.ifname);
232	exit (1);	304	exit (EXIT_FAILURE);
233	}	305	}
234		306
		307	if (tap->if_up () &&
		308	!run_script (run_script_cb (this, &vpn::script_if_init), true))
		309	{
		310	slog (L_ERR, _("interface initialization command '%s' failed, exiting."),
		311	tap->if_up ());
		312	exit (EXIT_FAILURE);
		313	}
		314
235	run_script (run_script_cb (this, &vpn::script_if_up), true);	315	if (!run_script (run_script_cb (this, &vpn::script_if_up), true))
		316	{
		317	slog (L_ERR, _("if-up command execution failed, exiting."));
		318	exit (EXIT_FAILURE);
		319	}
236		320
237	tap_ev_watcher.start (tap->fd, POLLIN);	321	tap_ev_watcher.start (tap->fd, EVENT_READ);
238
239	reconnect_all ();
240		322
241	return 0;	323	return 0;
242	}
243
244	// send a vpn packet out to other hosts
245	bool
246	vpn::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	}	324	}
271		325
272	bool	326	bool
273	vpn::send_ipv4_packet (vpn_packet *pkt, const sockinfo &si, int tos)	327	vpn::send_ipv4_packet (vpn_packet *pkt, const sockinfo &si, int tos)
274	{	328	{
…		…
332	setsockopt (udpv4_fd, SOL_IP, IP_TOS, &tos, sizeof tos);	386	setsockopt (udpv4_fd, SOL_IP, IP_TOS, &tos, sizeof tos);
333	#endif	387	#endif
334	sendto (udpv4_fd, &((*pkt)[0]), pkt->len, 0, si.sav4 (), si.salenv4 ());	388	sendto (udpv4_fd, &((*pkt)[0]), pkt->len, 0, si.sav4 (), si.salenv4 ());
335		389
336	return true;	390	return true;
		391	}
		392
		393	void
		394	vpn::inject_data_packet (tap_packet *pkt, int dst)
		395	{
		396	if (dst)
		397	{
		398	// unicast
		399	if (dst != THISNODE->id)
		400	conns[dst - 1]->inject_data_packet (pkt);
		401	}
		402	else
		403	{
		404	// broadcast, this is ugly, but due to the security policy
		405	// we have to connect to all hosts...
		406	for (conns_vector::iterator c = conns.begin (); c != conns.end (); ++c)
		407	if ((*c)->conf != THISNODE)
		408	(*c)->inject_data_packet (pkt, true);
		409	}
337	}	410	}
338		411
339	void	412	void
340	vpn::recv_vpn_packet (vpn_packet *pkt, const sockinfo &rsi)	413	vpn::recv_vpn_packet (vpn_packet *pkt, const sockinfo &rsi)
341	{	414	{
…		…
358	connection *c = conns[src - 1];	431	connection *c = conns[src - 1];
359		432
360	if (dst == 0)	433	if (dst == 0)
361	slog (L_WARN, _("%s(%s): received broadcast (protocol violation)"),	434	slog (L_WARN, _("%s(%s): received broadcast (protocol violation)"),
362	c->conf->nodename, (const char *)rsi);	435	c->conf->nodename, (const char *)rsi);
363	else if (dst != 0 && dst != THISNODE->id)	436	else if (dst != THISNODE->id)
364	{	437	{
365	if (THISNODE->routerprio)	438	if (THISNODE->routerprio)
366	// the tos setting gets lost here. who cares.	439	// the tos setting gets lost here. who cares.
367	conns[dst - 1]->inject_vpn_packet (pkt);	440	conns[dst - 1]->inject_vpn_packet (pkt);
368	else	441	else
…		…
374	else	447	else
375	c->recv_vpn_packet (pkt, rsi);	448	c->recv_vpn_packet (pkt, rsi);
376	}	449	}
377	}	450	}
378		451
		452	bool
		453	vpn::send_vpn_packet (vpn_packet *pkt, const sockinfo &si, int tos)
		454	{
		455	switch (si.prot)
		456	{
		457	case PROT_IPv4:
		458	return send_ipv4_packet (pkt, si, tos);
		459	case PROT_UDPv4:
		460	return send_udpv4_packet (pkt, si, tos);
		461	#if ENABLE_TCP
		462	case PROT_TCPv4:
		463	return send_tcpv4_packet (pkt, si, tos);
		464	#endif
		465	#if ENABLE_ICMP
		466	case PROT_ICMPv4:
		467	return send_icmpv4_packet (pkt, si, tos);
		468	#endif
		469	#if ENABLE_DNS
		470	case PROT_DNSv4:
		471	return send_dnsv4_packet (pkt, si, tos);
		472	#endif
		473
		474	default:
		475	slog (L_CRIT, _("%s: FATAL: trying to send packet with unsupported protocol"), (const char *)si);
		476	}
		477
		478	return false;
		479	}
		480
379	void	481	void
380	vpn::ipv4_ev (io_watcher &w, short revents)	482	vpn::ipv4_ev (io_watcher &w, short revents)
381	{	483	{
382	if (revents & (POLLIN \| POLLERR))	484	if (revents & EVENT_READ)
383	{	485	{
384	vpn_packet *pkt = new vpn_packet;	486	vpn_packet *pkt = new vpn_packet;
385	struct sockaddr_in sa;	487	struct sockaddr_in sa;
386	socklen_t sa_len = sizeof (sa);	488	socklen_t sa_len = sizeof (sa);
387	int len;	489	int len;
…		…
392		494
393	if (len > 0)	495	if (len > 0)
394	{	496	{
395	pkt->len = len;	497	pkt->len = len;
396		498
397	// raw sockets deliver the ipv4, but don't expect it on sends	499	// raw sockets deliver the ipv4 header, but don't expect it on sends
398	// this is slow, but...
399	pkt->skip_hdr (IP_OVERHEAD);	500	pkt->skip_hdr (IP_OVERHEAD);
400		501
401	recv_vpn_packet (pkt, si);	502	recv_vpn_packet (pkt, si);
402	}	503	}
403	else	504	else
…		…
406	slog (L_DEBUG, _("%s: %s"), (const char *)si, strerror (errno));	507	slog (L_DEBUG, _("%s: %s"), (const char *)si, strerror (errno));
407	}	508	}
408		509
409	delete pkt;	510	delete pkt;
410	}	511	}
411	else if (revents & POLLHUP)
412	{
413	// this cannot ;) happen on udp sockets
414	slog (L_ERR, _("FATAL: POLLHUP on ipv4 fd, terminating."));
415	exit (1);
416	}
417	else	512	else
418	{	513	{
419	slog (L_ERR,	514	slog (L_ERR,
420	_("FATAL: unknown revents %08x in socket, terminating\n"),	515	_("FATAL: unknown revents %08x in socket, terminating\n"),
421	revents);	516	revents);
422	exit (1);	517	exit (EXIT_FAILURE);
423	}	518	}
424	}	519	}
425		520
426	#if ENABLE_ICMP	521	#if ENABLE_ICMP
427	void	522	void
428	vpn::icmpv4_ev (io_watcher &w, short revents)	523	vpn::icmpv4_ev (io_watcher &w, short revents)
429	{	524	{
430	if (revents & (POLLIN \| POLLERR))	525	if (revents & EVENT_READ)
431	{	526	{
432	vpn_packet *pkt = new vpn_packet;	527	vpn_packet *pkt = new vpn_packet;
433	struct sockaddr_in sa;	528	struct sockaddr_in sa;
434	socklen_t sa_len = sizeof (sa);	529	socklen_t sa_len = sizeof (sa);
435	int len;	530	int len;
…		…
460	slog (L_DEBUG, _("%s: %s"), (const char *)si, strerror (errno));	555	slog (L_DEBUG, _("%s: %s"), (const char *)si, strerror (errno));
461	}	556	}
462		557
463	delete pkt;	558	delete pkt;
464	}	559	}
465	else if (revents & POLLHUP)
466	{
467	// this cannot ;) happen on udp sockets
468	slog (L_ERR, _("FATAL: POLLHUP on icmpv4 fd, terminating."));
469	exit (1);
470	}
471	else	560	else
472	{	561	{
473	slog (L_ERR,	562	slog (L_ERR,
474	_("FATAL: unknown revents %08x in socket, terminating\n"),	563	_("FATAL: unknown revents %08x in socket, terminating\n"),
475	revents);	564	revents);
476	exit (1);	565	exit (EXIT_FAILURE);
477	}	566	}
478	}	567	}
479	#endif	568	#endif
480		569
481	void	570	void
482	vpn::udpv4_ev (io_watcher &w, short revents)	571	vpn::udpv4_ev (io_watcher &w, short revents)
483	{	572	{
484	if (revents & (POLLIN \| POLLERR))	573	if (revents & EVENT_READ)
485	{	574	{
486	vpn_packet *pkt = new vpn_packet;	575	vpn_packet *pkt = new vpn_packet;
487	struct sockaddr_in sa;	576	struct sockaddr_in sa;
488	socklen_t sa_len = sizeof (sa);	577	socklen_t sa_len = sizeof (sa);
489	int len;	578	int len;
…		…
504	slog (L_DEBUG, _("%s: fd %d, %s"), (const char *)si, w.fd, strerror (errno));	593	slog (L_DEBUG, _("%s: fd %d, %s"), (const char *)si, w.fd, strerror (errno));
505	}	594	}
506		595
507	delete pkt;	596	delete pkt;
508	}	597	}
509	else if (revents & POLLHUP)
510	{
511	// this cannot ;) happen on udp sockets
512	slog (L_ERR, _("FATAL: POLLHUP on udp v4 fd, terminating."));
513	exit (1);
514	}
515	else	598	else
516	{	599	{
517	slog (L_ERR,	600	slog (L_ERR,
518	_("FATAL: unknown revents %08x in socket, terminating\n"),	601	_("FATAL: unknown revents %08x in socket, terminating\n"),
519	revents);	602	revents);
520	exit (1);	603	exit (EXIT_FAILURE);
521	}	604	}
522	}	605	}
523		606
524	void	607	void
525	vpn::tap_ev (io_watcher &w, short revents)	608	vpn::tap_ev (io_watcher &w, short revents)
526	{	609	{
527	if (revents & POLLIN)	610	if (revents & EVENT_READ)
528	{	611	{
529	/* process data */	612	/* process data */
530	tap_packet *pkt;	613	tap_packet *pkt;
531		614
532	pkt = tap->recv ();	615	pkt = tap->recv ();
533		616
		617	if (!pkt)
		618	return;
		619
		620	if (pkt->len > 14)
		621	{
534	int dst = mac2id (pkt->dst);	622	int dst = mac2id (pkt->dst);
535	int src = mac2id (pkt->src);	623	int src = mac2id (pkt->src);
536		624
537	if (src != THISNODE->id)	625	if (src != THISNODE->id)
538	{
539	slog (L_ERR, _("FATAL: tap packet not originating on current node received, exiting."));
540	exit (1);
541	}
542
543	if (dst == THISNODE->id)
544	{
545	slog (L_ERR, _("FATAL: tap packet destined for current node received, exiting."));
546	exit (1);
547	}
548
549	if (dst > conns.size ())
550	slog (L_ERR, _("tap packet for unknown node %d received, ignoring."), dst);
551	else
552	{
553	if (dst)
554	{	626	{
555	// unicast	627	slog (L_ERR, _("FATAL: tap packet not originating on current node received (if-up script not working properly?), exiting."));
556	if (dst != THISNODE->id)	628	exit (EXIT_FAILURE);
557	conns[dst - 1]->inject_data_packet (pkt);
558	}	629	}
		630
		631	if (dst == THISNODE->id)
		632	{
		633	slog (L_ERR, _("FATAL: tap packet destined for current node received, exiting."));
		634	exit (EXIT_FAILURE);
		635	}
		636
		637	if (dst > conns.size ())
		638	slog (L_ERR, _("tap packet for unknown node %d received, ignoring."), dst);
559	else	639	else
560	{
561	// broadcast, this is ugly, but due to the security policy
562	// we have to connect to all hosts...
563	for (conns_vector::iterator c = conns.begin (); c != conns.end (); ++c)
564	if ((*c)->conf != THISNODE)
565	(*c)->inject_data_packet (pkt);	640	inject_data_packet (pkt, dst);
566	}
567	}	641	}
568		642
569	delete pkt;	643	delete pkt;
570	}
571	else if (revents & (POLLHUP \| POLLERR))
572	{
573	slog (L_ERR, _("FATAL: POLLHUP or POLLERR on network device fd, terminating."));
574	exit (1);
575	}	644	}
576	else	645	else
577	abort ();	646	abort ();
578	}	647	}
579		648
…		…
585	if (events & EVENT_SHUTDOWN)	654	if (events & EVENT_SHUTDOWN)
586	{	655	{
587	slog (L_INFO, _("preparing shutdown..."));	656	slog (L_INFO, _("preparing shutdown..."));
588		657
589	shutdown_all ();	658	shutdown_all ();
590
591	remove_pid (pidfilename);	659	remove_pid (conf.pidfilename);
592
593	slog (L_INFO, _("terminating"));	660	slog (L_INFO, _("terminating"));
594		661	exit (EXIT_SUCCESS);
595	exit (0);
596	}	662	}
597		663
598	if (events & EVENT_RECONNECT)	664	if (events & EVENT_RECONNECT)
599	{	665	{
600	slog (L_INFO, _("forced reconnect"));	666	slog (L_INFO, _("forced reconnect"));
…		…
602	reconnect_all ();	668	reconnect_all ();
603	}	669	}
604		670
605	events = 0;	671	events = 0;
606	}	672	}
607
608	w.at = TSTAMP_CANCEL;
609	}	673	}
610		674
611	void	675	void
612	vpn::shutdown_all ()	676	vpn::shutdown_all ()
613	{	677	{
…		…
626	connection_init ();	690	connection_init ();
627		691
628	for (configuration::node_vector::iterator i = conf.nodes.begin ();	692	for (configuration::node_vector::iterator i = conf.nodes.begin ();
629	i != conf.nodes.end (); ++i)	693	i != conf.nodes.end (); ++i)
630	{	694	{
631	connection *conn = new connection (this);	695	connection conn = new connection (this, i);
632
633	conn->conf = *i;
634	conns.push_back (conn);	696	conns.push_back (conn);
635
636	conn->establish_connection ();	697	conn->establish_connection ();
637	}	698	}
638	}	699	}
639		700
640	connection *vpn::find_router ()	701	connection *vpn::find_router ()
…		…
703	, tcpv4_ev_watcher (this, &vpn::tcpv4_ev)	764	, tcpv4_ev_watcher (this, &vpn::tcpv4_ev)
704	#endif	765	#endif
705	#if ENABLE_ICMP	766	#if ENABLE_ICMP
706	, icmpv4_ev_watcher(this, &vpn::icmpv4_ev)	767	, icmpv4_ev_watcher(this, &vpn::icmpv4_ev)
707	#endif	768	#endif
		769	#if ENABLE_DNS
		770	, dnsv4_ev_watcher (this, &vpn::dnsv4_ev)
		771	#endif
708	, tap_ev_watcher (this, &vpn::tap_ev)	772	, tap_ev_watcher (this, &vpn::tap_ev)
709	{	773	{
710	}	774	}
711		775
712	vpn::~vpn ()	776	vpn::~vpn ()

Diff Legend

-–
+Removed lines
-+
+Added lines
-<
+Changed lines
->
+Changed lines

Comparing gvpe/src/vpn.C (file contents): Revision 1.16 by pcg, Tue Oct 14 19:59:16 2003 UTC vs. Revision 1.35 by pcg, Fri Apr 8 16:12:49 2005 UTC

Diff Legend

Comparing gvpe/src/vpn.C (file contents):
Revision 1.16 by pcg, Tue Oct 14 19:59:16 2003 UTC vs.
Revision 1.35 by pcg, Fri Apr 8 16:12:49 2005 UTC