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

Comparing gvpe/src/vpn.C (file contents):
Revision 1.19 by pcg, Thu Oct 16 02:41:21 2003 UTC vs.
Revision 1.40 by pcg, Sat Dec 1 23:35:31 2007 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 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. 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
18	*/	20	*/
19		21
20	#include "config.h"	22	#include "config.h"
21		23
22	#include <list>	24	#include <list>
23		25
		26	#include <cstdio>
		27	#include <cstring>
24	#include <cstdlib>	28	#include <cstdlib>
25	#include <cstring>
26	#include <cstdio>
27		29
28	#include <sys/types.h>	30	#include <sys/types.h>
29	#include <sys/socket.h>	31	#include <sys/socket.h>
30	#include <sys/wait.h>	32	#include <sys/wait.h>
31	#include <errno.h>	33	#include <errno.h>
40		42
41	#include "connection.h"	43	#include "connection.h"
42	#include "util.h"	44	#include "util.h"
43	#include "vpn.h"	45	#include "vpn.h"
44		46
		47	vpn network; // THE vpn (bad design...)
		48
45	/////////////////////////////////////////////////////////////////////////////	49	/////////////////////////////////////////////////////////////////////////////
46		50
47	const char *vpn::script_if_up ()	51	void
		52	vpn::script_init_env ()
48	{	53	{
49	// the tunnel device mtu should be the physical mtu - overhead	54	// the tunnel device mtu should be the physical mtu - overhead
50	// the tricky part is rounding to the cipher key blocksize	55	// the tricky part is rounding to the cipher key blocksize
51	int mtu = conf.mtu - ETH_OVERHEAD - VPE_OVERHEAD - MAX_OVERHEAD;	56	int mtu = conf.mtu - ETH_OVERHEAD - VPE_OVERHEAD - MAX_OVERHEAD;
52	mtu += ETH_OVERHEAD - 6 - 6; // now we have the data portion	57	mtu += ETH_OVERHEAD - 6 - 6; // now we have the data portion
53	mtu -= mtu % EVP_CIPHER_block_size (CIPHER); // round	58	mtu -= mtu % EVP_CIPHER_block_size (CIPHER); // round
54	mtu -= ETH_OVERHEAD - 6 - 6; // and get interface mtu again	59	mtu -= ETH_OVERHEAD - 6 - 6; // and get interface mtu again
55		60
56	char *env;	61	char *env;
57	asprintf (&env, "CONFBASE=%s", confbase);	62	asprintf (&env, "CONFBASE=%s", confbase); putenv (env);
58	putenv (env);
59	asprintf (&env, "NODENAME=%s", THISNODE->nodename);
60	putenv (env);
61	asprintf (&env, "NODEID=%d", THISNODE->id);
62	putenv (env);
63	asprintf (&env, "IFNAME=%s", tap->interface ());	63	asprintf (&env, "IFNAME=%s", tap->interface ()); putenv (env);
64	putenv (env);	64	asprintf (&env, "IFTYPE=%s", IFTYPE); putenv (env);
		65	asprintf (&env, "IFSUBTYPE=%s", IFSUBTYPE); putenv (env);
65	asprintf (&env, "MTU=%d", mtu);	66	asprintf (&env, "MTU=%d", mtu); putenv (env);
66	putenv (env);	67	asprintf (&env, "NODES=%d", conns.size ()); putenv (env);
67	asprintf (&env, "MAC=%02x:%02x:%02x:%02x:%02x:%02x",	68	asprintf (&env, "NODEID=%d", THISNODE->id); putenv (env);
68	0xfe, 0xfd, 0x80, 0x00, THISNODE->id >> 8,
69	THISNODE->id & 0xff);
70	putenv (env);
71		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,
72	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;
73	}	98	}
74		99
75	int	100	int
76	vpn::setup ()	101	vpn::setup ()
77	{	102	{
…		…
83		108
84	if (ipv4_fd < 0)	109	if (ipv4_fd < 0)
85	return -1;	110	return -1;
86		111
87	fcntl (ipv4_fd, F_SETFL, O_NONBLOCK);	112	fcntl (ipv4_fd, F_SETFL, O_NONBLOCK);
		113	fcntl (ipv4_fd, F_SETFD, FD_CLOEXEC);
88		114
89	#if defined(SOL_IP) && defined(IP_MTU_DISCOVER)	115	#if defined(SOL_IP) && defined(IP_MTU_DISCOVER)
90	// this I really consider a linux bug. I am neither connected	116	// this I really consider a linux bug. I am neither connected
91	// nor do I fragment myself. Linux still sets DF and doesn't	117	// nor do I fragment myself. Linux still sets DF and doesn't
92	// fragment for me sometimes.	118	// fragment for me sometimes.
…		…
99	sockinfo si (THISNODE, PROT_IPv4);	125	sockinfo si (THISNODE, PROT_IPv4);
100		126
101	if (bind (ipv4_fd, si.sav4 (), si.salenv4 ()))	127	if (bind (ipv4_fd, si.sav4 (), si.salenv4 ()))
102	{	128	{
103	slog (L_ERR, _("can't bind ipv4 socket on %s: %s"), (const char *)si, strerror (errno));	129	slog (L_ERR, _("can't bind ipv4 socket on %s: %s"), (const char *)si, strerror (errno));
104	exit (1);	130	exit (EXIT_FAILURE);
105	}	131	}
106		132
107	ipv4_ev_watcher.start (ipv4_fd, POLLIN);	133	ipv4_ev_watcher.start (ipv4_fd, EV_READ);
108	}	134	}
109		135
110	udpv4_fd = -1;	136	udpv4_fd = -1;
111		137
112	if (THISNODE->protocols & PROT_UDPv4 && THISNODE->udp_port)	138	if (THISNODE->protocols & PROT_UDPv4 && THISNODE->udp_port)
…		…
115		141
116	if (udpv4_fd < 0)	142	if (udpv4_fd < 0)
117	return -1;	143	return -1;
118		144
119	fcntl (udpv4_fd, F_SETFL, O_NONBLOCK);	145	fcntl (udpv4_fd, F_SETFL, O_NONBLOCK);
		146	fcntl (udpv4_fd, F_SETFD, FD_CLOEXEC);
120		147
121	// standard daemon practise...	148	// standard daemon practise...
122	{	149	{
123	int oval = 1;	150	int oval = 1;
124	setsockopt (udpv4_fd, SOL_SOCKET, SO_REUSEADDR, &oval, sizeof oval);	151	setsockopt (udpv4_fd, SOL_SOCKET, SO_REUSEADDR, &oval, sizeof oval);
…		…
137	sockinfo si (THISNODE, PROT_UDPv4);	164	sockinfo si (THISNODE, PROT_UDPv4);
138		165
139	if (bind (udpv4_fd, si.sav4 (), si.salenv4 ()))	166	if (bind (udpv4_fd, si.sav4 (), si.salenv4 ()))
140	{	167	{
141	slog (L_ERR, _("can't bind udpv4 on %s: %s"), (const char *)si, strerror (errno));	168	slog (L_ERR, _("can't bind udpv4 on %s: %s"), (const char *)si, strerror (errno));
142	exit (1);	169	exit (EXIT_FAILURE);
143	}	170	}
144		171
145	udpv4_ev_watcher.start (udpv4_fd, POLLIN);	172	udpv4_ev_watcher.start (udpv4_fd, EV_READ);
146	}	173	}
147		174
148	icmpv4_fd = -1;	175	icmpv4_fd = -1;
149		176
150	#if ENABLE_ICMP	177	#if ENABLE_ICMP
…		…
154		181
155	if (icmpv4_fd < 0)	182	if (icmpv4_fd < 0)
156	return -1;	183	return -1;
157		184
158	fcntl (icmpv4_fd, F_SETFL, O_NONBLOCK);	185	fcntl (icmpv4_fd, F_SETFL, O_NONBLOCK);
		186	fcntl (icmpv4_fd, F_SETFD, FD_CLOEXEC);
159		187
160	#ifdef ICMP_FILTER	188	#ifdef ICMP_FILTER
161	{	189	{
162	icmp_filter oval;	190	icmp_filter oval;
163	oval.data = 0xffffffff;	191	oval.data = 0xffffffff;
…		…
172	// this I really consider a linux bug. I am neither connected	200	// this I really consider a linux bug. I am neither connected
173	// nor do I fragment myself. Linux still sets DF and doesn't	201	// nor do I fragment myself. Linux still sets DF and doesn't
174	// fragment for me sometimes.	202	// fragment for me sometimes.
175	{	203	{
176	int oval = IP_PMTUDISC_DONT;	204	int oval = IP_PMTUDISC_DONT;
177	setsockopt (udpv4_fd, SOL_IP, IP_MTU_DISCOVER, &oval, sizeof oval);	205	setsockopt (icmpv4_fd, SOL_IP, IP_MTU_DISCOVER, &oval, sizeof oval);
178	}	206	}
179	#endif	207	#endif
180		208
181	sockinfo si (THISNODE, PROT_ICMPv4);	209	sockinfo si (THISNODE, PROT_ICMPv4);
182		210
183	if (bind (icmpv4_fd, si.sav4 (), si.salenv4 ()))	211	if (bind (icmpv4_fd, si.sav4 (), si.salenv4 ()))
184	{	212	{
185	slog (L_ERR, _("can't bind icmpv4 on %s: %s"), (const char *)si, strerror (errno));	213	slog (L_ERR, _("can't bind icmpv4 on %s: %s"), (const char *)si, strerror (errno));
186	exit (1);	214	exit (EXIT_FAILURE);
187	}	215	}
188		216
189	icmpv4_ev_watcher.start (icmpv4_fd, POLLIN);	217	icmpv4_ev_watcher.start (icmpv4_fd, EV_READ);
190	}	218	}
191	#endif	219	#endif
192		220
193	tcpv4_fd = -1;	221	tcpv4_fd = -1;
194		222
…		…
199		227
200	if (tcpv4_fd < 0)	228	if (tcpv4_fd < 0)
201	return -1;	229	return -1;
202		230
203	fcntl (tcpv4_fd, F_SETFL, O_NONBLOCK);	231	fcntl (tcpv4_fd, F_SETFL, O_NONBLOCK);
		232	fcntl (tcpv4_fd, F_SETFD, FD_CLOEXEC);
204		233
205	// standard daemon practise...	234	// standard daemon practise...
206	{	235	{
207	int oval = 1;	236	int oval = 1;
208	setsockopt (tcpv4_fd, SOL_SOCKET, SO_REUSEADDR, &oval, sizeof oval);	237	setsockopt (tcpv4_fd, SOL_SOCKET, SO_REUSEADDR, &oval, sizeof oval);
…		…
211	sockinfo si (THISNODE, PROT_TCPv4);	240	sockinfo si (THISNODE, PROT_TCPv4);
212		241
213	if (bind (tcpv4_fd, si.sav4 (), si.salenv4 ()))	242	if (bind (tcpv4_fd, si.sav4 (), si.salenv4 ()))
214	{	243	{
215	slog (L_ERR, _("can't bind tcpv4 on %s: %s"), (const char *)si, strerror (errno));	244	slog (L_ERR, _("can't bind tcpv4 on %s: %s"), (const char *)si, strerror (errno));
216	exit (1);	245	exit (EXIT_FAILURE);
217	}	246	}
218		247
219	if (listen (tcpv4_fd, 5))	248	if (listen (tcpv4_fd, 5))
220	{	249	{
221	slog (L_ERR, _("can't listen tcpv4 on %s: %s"), (const char *)si, strerror (errno));	250	slog (L_ERR, _("can't listen tcpv4 on %s: %s"), (const char *)si, strerror (errno));
222	exit (1);	251	exit (EXIT_FAILURE);
		252	}
		253
		254	tcpv4_ev_watcher.start (tcpv4_fd, EV_READ);
		255	}
		256	#endif
		257
		258	#if ENABLE_DNS
		259	if (THISNODE->protocols & PROT_DNSv4)
		260	{
		261	dns_forwarder.set (::conf.dns_forw_host, ::conf.dns_forw_port, PROT_DNSv4);
		262
		263	dnsv4_fd = socket (PF_INET, SOCK_DGRAM, IPPROTO_UDP);
		264
		265	if (dnsv4_fd < 0)
		266	return -1;
		267
		268	fcntl (dnsv4_fd, F_SETFL, O_NONBLOCK);
		269	fcntl (dnsv4_fd, F_SETFD, FD_CLOEXEC);
		270
		271	# if defined(SOL_IP) && defined(IP_MTU_DISCOVER)
		272	// this I really consider a linux bug. I am neither connected
		273	// nor do I fragment myself. Linux still sets DF and doesn't
		274	// fragment for me sometimes.
		275	{
		276	int oval = IP_PMTUDISC_DONT;
		277	setsockopt (dnsv4_fd, SOL_IP, IP_MTU_DISCOVER, &oval, sizeof oval);
223	}	278	}
224
225	tcpv4_ev_watcher.start (tcpv4_fd, POLLIN);
226	}
227	#endif	279	# endif
		280
		281	// standard daemon practise...
		282	{
		283	int oval = 1;
		284	setsockopt (dnsv4_fd, SOL_SOCKET, SO_REUSEADDR, &oval, sizeof oval);
		285	}
		286
		287	sockinfo si (THISNODE->dns_hostname,
		288	THISNODE->dns_hostname ? THISNODE->dns_port : 0,
		289	PROT_DNSv4);
		290
		291	if (bind (dnsv4_fd, si.sav4 (), si.salenv4 ()))
		292	{
		293	slog (L_ERR, _("can't bind dnsv4 on %s: %s"), (const char *)si, strerror (errno));
		294	exit (EXIT_FAILURE);
		295	}
		296
		297	dnsv4_ev_watcher.start (dnsv4_fd, EV_READ);
		298	}
		299	#endif
		300
		301	/////////////////////////////////////////////////////////////////////////////
		302
		303	reconnect_all ();
		304
		305	/////////////////////////////////////////////////////////////////////////////
228		306
229	tap = new tap_device ();	307	tap = new tap_device ();
230	if (!tap) //D this, of course, never catches	308	if (!tap) //D this, of course, never catches
231	{	309	{
232	slog (L_ERR, _("cannot create network interface '%s'"), conf.ifname);	310	slog (L_ERR, _("cannot create network interface '%s'"), conf.ifname);
233	exit (1);	311	exit (EXIT_FAILURE);
234	}	312	}
235		313
		314	fcntl (tap->fd, F_SETFD, FD_CLOEXEC);
		315
		316	if (tap->if_up () &&
		317	!run_script (run_script_cb (this, &vpn::script_if_init), true))
		318	{
		319	slog (L_ERR, _("interface initialization command '%s' failed, exiting."),
		320	tap->if_up ());
		321	exit (EXIT_FAILURE);
		322	}
		323
236	run_script (run_script_cb (this, &vpn::script_if_up), true);	324	if (!run_script (run_script_cb (this, &vpn::script_if_up), true))
		325	{
		326	slog (L_ERR, _("if-up command execution failed, exiting."));
		327	exit (EXIT_FAILURE);
		328	}
237		329
238	tap_ev_watcher.start (tap->fd, POLLIN);	330	tap_ev_watcher.start (tap->fd, EV_READ);
239
240	reconnect_all ();
241		331
242	return 0;	332	return 0;
243	}
244
245	// send a vpn packet out to other hosts
246	bool
247	vpn::send_vpn_packet (vpn_packet *pkt, const sockinfo &si, int tos)
248	{
249	switch (si.prot)
250	{
251	case PROT_IPv4:
252	return send_ipv4_packet (pkt, si, tos);
253
254	case PROT_UDPv4:
255	return send_udpv4_packet (pkt, si, tos);
256
257	#if ENABLE_TCP
258	case PROT_TCPv4:
259	return send_tcpv4_packet (pkt, si, tos);
260	#endif
261
262	#if ENABLE_ICMP
263	case PROT_ICMPv4:
264	return send_icmpv4_packet (pkt, si, tos);
265	#endif
266
267	default:
268	slog (L_CRIT, _("%s: FATAL: trying to send packet with unsupported protocol"), (const char *)si);
269	return false;
270	}
271	}	333	}
272		334
273	bool	335	bool
274	vpn::send_ipv4_packet (vpn_packet *pkt, const sockinfo &si, int tos)	336	vpn::send_ipv4_packet (vpn_packet *pkt, const sockinfo &si, int tos)
275	{	337	{
…		…
394	else	456	else
395	c->recv_vpn_packet (pkt, rsi);	457	c->recv_vpn_packet (pkt, rsi);
396	}	458	}
397	}	459	}
398		460
		461	bool
		462	vpn::send_vpn_packet (vpn_packet *pkt, const sockinfo &si, int tos)
		463	{
		464	switch (si.prot)
		465	{
		466	case PROT_IPv4:
		467	return send_ipv4_packet (pkt, si, tos);
		468	case PROT_UDPv4:
		469	return send_udpv4_packet (pkt, si, tos);
		470	#if ENABLE_TCP
		471	case PROT_TCPv4:
		472	return send_tcpv4_packet (pkt, si, tos);
		473	#endif
		474	#if ENABLE_ICMP
		475	case PROT_ICMPv4:
		476	return send_icmpv4_packet (pkt, si, tos);
		477	#endif
		478	#if ENABLE_DNS
		479	case PROT_DNSv4:
		480	return send_dnsv4_packet (pkt, si, tos);
		481	#endif
		482
		483	default:
		484	slog (L_CRIT, _("%s: FATAL: trying to send packet with unsupported protocol"), (const char *)si);
		485	}
		486
		487	return false;
		488	}
		489
399	void	490	void
400	vpn::ipv4_ev (io_watcher &w, short revents)	491	vpn::ipv4_ev (ev::io &w, int revents)
401	{	492	{
402	if (revents & (POLLIN \| POLLERR))	493	if (revents & EV_READ)
403	{	494	{
404	vpn_packet *pkt = new vpn_packet;	495	vpn_packet *pkt = new vpn_packet;
405	struct sockaddr_in sa;	496	struct sockaddr_in sa;
406	socklen_t sa_len = sizeof (sa);	497	socklen_t sa_len = sizeof (sa);
407	int len;	498	int len;
…		…
412		503
413	if (len > 0)	504	if (len > 0)
414	{	505	{
415	pkt->len = len;	506	pkt->len = len;
416		507
417	// raw sockets deliver the ipv4, but don't expect it on sends	508	// raw sockets deliver the ipv4 header, but don't expect it on sends
418	// this is slow, but...
419	pkt->skip_hdr (IP_OVERHEAD);	509	pkt->skip_hdr (IP_OVERHEAD);
420		510
421	recv_vpn_packet (pkt, si);	511	recv_vpn_packet (pkt, si);
422	}	512	}
423	else	513	else
…		…
426	slog (L_DEBUG, _("%s: %s"), (const char *)si, strerror (errno));	516	slog (L_DEBUG, _("%s: %s"), (const char *)si, strerror (errno));
427	}	517	}
428		518
429	delete pkt;	519	delete pkt;
430	}	520	}
431	else if (revents & POLLHUP)
432	{
433	// this cannot ;) happen on udp sockets
434	slog (L_ERR, _("FATAL: POLLHUP on ipv4 fd, terminating."));
435	exit (1);
436	}
437	else	521	else
438	{	522	{
439	slog (L_ERR,	523	slog (L_ERR,
440	_("FATAL: unknown revents %08x in socket, terminating\n"),	524	_("FATAL: unknown revents %08x in socket, terminating\n"),
441	revents);	525	revents);
442	exit (1);	526	exit (EXIT_FAILURE);
443	}	527	}
444	}	528	}
445		529
446	#if ENABLE_ICMP	530	#if ENABLE_ICMP
447	void	531	void
448	vpn::icmpv4_ev (io_watcher &w, short revents)	532	vpn::icmpv4_ev (ev::io &w, int revents)
449	{	533	{
450	if (revents & (POLLIN \| POLLERR))	534	if (revents & EV_READ)
451	{	535	{
452	vpn_packet *pkt = new vpn_packet;	536	vpn_packet *pkt = new vpn_packet;
453	struct sockaddr_in sa;	537	struct sockaddr_in sa;
454	socklen_t sa_len = sizeof (sa);	538	socklen_t sa_len = sizeof (sa);
455	int len;	539	int len;
…		…
480	slog (L_DEBUG, _("%s: %s"), (const char *)si, strerror (errno));	564	slog (L_DEBUG, _("%s: %s"), (const char *)si, strerror (errno));
481	}	565	}
482		566
483	delete pkt;	567	delete pkt;
484	}	568	}
485	else if (revents & POLLHUP)
486	{
487	// this cannot ;) happen on udp sockets
488	slog (L_ERR, _("FATAL: POLLHUP on icmpv4 fd, terminating."));
489	exit (1);
490	}
491	else	569	else
492	{	570	{
493	slog (L_ERR,	571	slog (L_ERR,
494	_("FATAL: unknown revents %08x in socket, terminating\n"),	572	_("FATAL: unknown revents %08x in socket, terminating\n"),
495	revents);	573	revents);
496	exit (1);	574	exit (EXIT_FAILURE);
497	}	575	}
498	}	576	}
499	#endif	577	#endif
500		578
501	void	579	void
502	vpn::udpv4_ev (io_watcher &w, short revents)	580	vpn::udpv4_ev (ev::io &w, int revents)
503	{	581	{
504	if (revents & (POLLIN \| POLLERR))	582	if (revents & EV_READ)
505	{	583	{
506	vpn_packet *pkt = new vpn_packet;	584	vpn_packet *pkt = new vpn_packet;
507	struct sockaddr_in sa;	585	struct sockaddr_in sa;
508	socklen_t sa_len = sizeof (sa);	586	socklen_t sa_len = sizeof (sa);
509	int len;	587	int len;
…		…
524	slog (L_DEBUG, _("%s: fd %d, %s"), (const char *)si, w.fd, strerror (errno));	602	slog (L_DEBUG, _("%s: fd %d, %s"), (const char *)si, w.fd, strerror (errno));
525	}	603	}
526		604
527	delete pkt;	605	delete pkt;
528	}	606	}
529	else if (revents & POLLHUP)
530	{
531	// this cannot ;) happen on udp sockets
532	slog (L_ERR, _("FATAL: POLLHUP on udp v4 fd, terminating."));
533	exit (1);
534	}
535	else	607	else
536	{	608	{
537	slog (L_ERR,	609	slog (L_ERR,
538	_("FATAL: unknown revents %08x in socket, terminating\n"),	610	_("FATAL: unknown revents %08x in socket, terminating\n"),
539	revents);	611	revents);
540	exit (1);	612	exit (EXIT_FAILURE);
541	}	613	}
542	}	614	}
543		615
544	void	616	void
545	vpn::tap_ev (io_watcher &w, short revents)	617	vpn::tap_ev (ev::io &w, int revents)
546	{	618	{
547	if (revents & POLLIN)	619	if (revents & EV_READ)
548	{	620	{
549	/* process data */	621	/* process data */
550	tap_packet *pkt;	622	tap_packet *pkt;
551		623
552	pkt = tap->recv ();	624	pkt = tap->recv ();
…		…
559	int dst = mac2id (pkt->dst);	631	int dst = mac2id (pkt->dst);
560	int src = mac2id (pkt->src);	632	int src = mac2id (pkt->src);
561		633
562	if (src != THISNODE->id)	634	if (src != THISNODE->id)
563	{	635	{
564	slog (L_ERR, _("FATAL: tap packet not originating on current node received, exiting."));	636	slog (L_ERR, _("FATAL: tap packet not originating on current node received (if-up script not working properly?), exiting."));
565	exit (1);	637	exit (EXIT_FAILURE);
566	}	638	}
567		639
568	if (dst == THISNODE->id)	640	if (dst == THISNODE->id)
569	{	641	{
570	slog (L_ERR, _("FATAL: tap packet destined for current node received, exiting."));	642	slog (L_ERR, _("FATAL: tap packet destined for current node received, exiting."));
571	exit (1);	643	exit (EXIT_FAILURE);
572	}	644	}
573		645
574	if (dst > conns.size ())	646	if (dst > conns.size ())
575	slog (L_ERR, _("tap packet for unknown node %d received, ignoring."), dst);	647	slog (L_ERR, _("tap packet for unknown node %d received, ignoring."), dst);
576	else	648	else
577	inject_data_packet (pkt, dst);	649	inject_data_packet (pkt, dst);
578	}	650	}
579		651
580	delete pkt;	652	delete pkt;
581	}	653	}
582	else if (revents & (POLLHUP \| POLLERR))
583	{
584	slog (L_ERR, _("FATAL: POLLHUP or POLLERR on network device fd, terminating."));
585	exit (1);
586	}
587	else	654	else
588	abort ();	655	abort ();
589	}	656	}
590		657
591	void	658	void
592	vpn::event_cb (time_watcher &w)	659	vpn::event_cb (ev::timer &w, int)
593	{	660	{
594	if (events)	661	if (events)
595	{	662	{
596	if (events & EVENT_SHUTDOWN)	663	if (events & EVENT_SHUTDOWN)
597	{	664	{
598	slog (L_INFO, _("preparing shutdown..."));	665	slog (L_INFO, _("preparing shutdown..."));
599		666
600	shutdown_all ();	667	shutdown_all ();
601
602	remove_pid (pidfilename);	668	remove_pid (conf.pidfilename);
603
604	slog (L_INFO, _("terminating"));	669	slog (L_INFO, _("terminating"));
605		670	exit (EXIT_SUCCESS);
606	exit (0);
607	}	671	}
608		672
609	if (events & EVENT_RECONNECT)	673	if (events & EVENT_RECONNECT)
610	{	674	{
611	slog (L_INFO, _("forced reconnect"));	675	slog (L_INFO, _("forced reconnect"));
…		…
613	reconnect_all ();	677	reconnect_all ();
614	}	678	}
615		679
616	events = 0;	680	events = 0;
617	}	681	}
618
619	w.at = TSTAMP_CANCEL;
620	}	682	}
621		683
622	void	684	void
623	vpn::shutdown_all ()	685	vpn::shutdown_all ()
624	{	686	{
…		…
637	connection_init ();	699	connection_init ();
638		700
639	for (configuration::node_vector::iterator i = conf.nodes.begin ();	701	for (configuration::node_vector::iterator i = conf.nodes.begin ();
640	i != conf.nodes.end (); ++i)	702	i != conf.nodes.end (); ++i)
641	{	703	{
642	connection *conn = new connection (this);	704	connection conn = new connection (this, i);
643
644	conn->conf = *i;
645	conns.push_back (conn);	705	conns.push_back (conn);
646
647	conn->establish_connection ();	706	conn->establish_connection ();
648	}	707	}
649	}	708	}
650		709
651	connection *vpn::find_router ()	710	connection *vpn::find_router ()
…		…
696	}	755	}
697		756
698	void	757	void
699	vpn::dump_status ()	758	vpn::dump_status ()
700	{	759	{
701	slog (L_NOTICE, _("BEGIN status dump (%ld)"), (long)NOW);	760	slog (L_NOTICE, _("BEGIN status dump (%ld)"), (long)ev_now ());
702		761
703	for (conns_vector::iterator c = conns.begin (); c != conns.end (); ++c)	762	for (conns_vector::iterator c = conns.begin (); c != conns.end (); ++c)
704	(*c)->dump_status ();	763	(*c)->dump_status ();
705		764
706	slog (L_NOTICE, _("END status dump"));	765	slog (L_NOTICE, _("END status dump"));
…		…
714	, tcpv4_ev_watcher (this, &vpn::tcpv4_ev)	773	, tcpv4_ev_watcher (this, &vpn::tcpv4_ev)
715	#endif	774	#endif
716	#if ENABLE_ICMP	775	#if ENABLE_ICMP
717	, icmpv4_ev_watcher(this, &vpn::icmpv4_ev)	776	, icmpv4_ev_watcher(this, &vpn::icmpv4_ev)
718	#endif	777	#endif
		778	#if ENABLE_DNS
		779	, dnsv4_ev_watcher (this, &vpn::dnsv4_ev)
		780	#endif
719	, tap_ev_watcher (this, &vpn::tap_ev)	781	, tap_ev_watcher (this, &vpn::tap_ev)
720	{	782	{
721	}	783	}
722		784
723	vpn::~vpn ()	785	vpn::~vpn ()

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Comparing gvpe/src/vpn.C (file contents): Revision 1.19 by pcg, Thu Oct 16 02:41:21 2003 UTC vs. Revision 1.40 by pcg, Sat Dec 1 23:35:31 2007 UTC

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Comparing gvpe/src/vpn.C (file contents):
Revision 1.19 by pcg, Thu Oct 16 02:41:21 2003 UTC vs.
Revision 1.40 by pcg, Sat Dec 1 23:35:31 2007 UTC