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

Comparing gvpe/src/vpn.C (file contents):
Revision 1.20 by pcg, Thu Oct 16 14:12:00 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>
44		46
45	vpn network; // THE vpn (bad design...)	47	vpn network; // THE vpn (bad design...)
46		48
47	/////////////////////////////////////////////////////////////////////////////	49	/////////////////////////////////////////////////////////////////////////////
48		50
49	const char *vpn::script_if_up ()	51	void
		52	vpn::script_init_env ()
50	{	53	{
51	// the tunnel device mtu should be the physical mtu - overhead	54	// the tunnel device mtu should be the physical mtu - overhead
52	// the tricky part is rounding to the cipher key blocksize	55	// the tricky part is rounding to the cipher key blocksize
53	int mtu = conf.mtu - ETH_OVERHEAD - VPE_OVERHEAD - MAX_OVERHEAD;	56	int mtu = conf.mtu - ETH_OVERHEAD - VPE_OVERHEAD - MAX_OVERHEAD;
54	mtu += ETH_OVERHEAD - 6 - 6; // now we have the data portion	57	mtu += ETH_OVERHEAD - 6 - 6; // now we have the data portion
55	mtu -= mtu % EVP_CIPHER_block_size (CIPHER); // round	58	mtu -= mtu % EVP_CIPHER_block_size (CIPHER); // round
56	mtu -= ETH_OVERHEAD - 6 - 6; // and get interface mtu again	59	mtu -= ETH_OVERHEAD - 6 - 6; // and get interface mtu again
57		60
58	char *env;	61	char *env;
59	asprintf (&env, "CONFBASE=%s", confbase);	62	asprintf (&env, "CONFBASE=%s", confbase); putenv (env);
60	putenv (env);
61	asprintf (&env, "NODENAME=%s", THISNODE->nodename);
62	putenv (env);
63	asprintf (&env, "NODEID=%d", THISNODE->id);
64	putenv (env);
65	asprintf (&env, "IFNAME=%s", tap->interface ());	63	asprintf (&env, "IFNAME=%s", tap->interface ()); putenv (env);
66	putenv (env);	64	asprintf (&env, "IFTYPE=%s", IFTYPE); putenv (env);
		65	asprintf (&env, "IFSUBTYPE=%s", IFSUBTYPE); putenv (env);
67	asprintf (&env, "MTU=%d", mtu);	66	asprintf (&env, "MTU=%d", mtu); putenv (env);
68	putenv (env);	67	asprintf (&env, "NODES=%d", conns.size ()); putenv (env);
69	asprintf (&env, "MAC=%02x:%02x:%02x:%02x:%02x:%02x",	68	asprintf (&env, "NODEID=%d", THISNODE->id); putenv (env);
70	0xfe, 0xfd, 0x80, 0x00, THISNODE->id >> 8,
71	THISNODE->id & 0xff);
72	putenv (env);
73		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,
74	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;
75	}	98	}
76		99
77	int	100	int
78	vpn::setup ()	101	vpn::setup ()
79	{	102	{
…		…
85		108
86	if (ipv4_fd < 0)	109	if (ipv4_fd < 0)
87	return -1;	110	return -1;
88		111
89	fcntl (ipv4_fd, F_SETFL, O_NONBLOCK);	112	fcntl (ipv4_fd, F_SETFL, O_NONBLOCK);
		113	fcntl (ipv4_fd, F_SETFD, FD_CLOEXEC);
90		114
91	#if defined(SOL_IP) && defined(IP_MTU_DISCOVER)	115	#if defined(SOL_IP) && defined(IP_MTU_DISCOVER)
92	// this I really consider a linux bug. I am neither connected	116	// this I really consider a linux bug. I am neither connected
93	// 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
94	// fragment for me sometimes.	118	// fragment for me sometimes.
…		…
101	sockinfo si (THISNODE, PROT_IPv4);	125	sockinfo si (THISNODE, PROT_IPv4);
102		126
103	if (bind (ipv4_fd, si.sav4 (), si.salenv4 ()))	127	if (bind (ipv4_fd, si.sav4 (), si.salenv4 ()))
104	{	128	{
105	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));
106	exit (1);	130	exit (EXIT_FAILURE);
107	}	131	}
108		132
109	ipv4_ev_watcher.start (ipv4_fd, POLLIN);	133	ipv4_ev_watcher.start (ipv4_fd, EV_READ);
110	}	134	}
111		135
112	udpv4_fd = -1;	136	udpv4_fd = -1;
113		137
114	if (THISNODE->protocols & PROT_UDPv4 && THISNODE->udp_port)	138	if (THISNODE->protocols & PROT_UDPv4 && THISNODE->udp_port)
…		…
117		141
118	if (udpv4_fd < 0)	142	if (udpv4_fd < 0)
119	return -1;	143	return -1;
120		144
121	fcntl (udpv4_fd, F_SETFL, O_NONBLOCK);	145	fcntl (udpv4_fd, F_SETFL, O_NONBLOCK);
		146	fcntl (udpv4_fd, F_SETFD, FD_CLOEXEC);
122		147
123	// standard daemon practise...	148	// standard daemon practise...
124	{	149	{
125	int oval = 1;	150	int oval = 1;
126	setsockopt (udpv4_fd, SOL_SOCKET, SO_REUSEADDR, &oval, sizeof oval);	151	setsockopt (udpv4_fd, SOL_SOCKET, SO_REUSEADDR, &oval, sizeof oval);
…		…
139	sockinfo si (THISNODE, PROT_UDPv4);	164	sockinfo si (THISNODE, PROT_UDPv4);
140		165
141	if (bind (udpv4_fd, si.sav4 (), si.salenv4 ()))	166	if (bind (udpv4_fd, si.sav4 (), si.salenv4 ()))
142	{	167	{
143	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));
144	exit (1);	169	exit (EXIT_FAILURE);
145	}	170	}
146		171
147	udpv4_ev_watcher.start (udpv4_fd, POLLIN);	172	udpv4_ev_watcher.start (udpv4_fd, EV_READ);
148	}	173	}
149		174
150	icmpv4_fd = -1;	175	icmpv4_fd = -1;
151		176
152	#if ENABLE_ICMP	177	#if ENABLE_ICMP
…		…
156		181
157	if (icmpv4_fd < 0)	182	if (icmpv4_fd < 0)
158	return -1;	183	return -1;
159		184
160	fcntl (icmpv4_fd, F_SETFL, O_NONBLOCK);	185	fcntl (icmpv4_fd, F_SETFL, O_NONBLOCK);
		186	fcntl (icmpv4_fd, F_SETFD, FD_CLOEXEC);
161		187
162	#ifdef ICMP_FILTER	188	#ifdef ICMP_FILTER
163	{	189	{
164	icmp_filter oval;	190	icmp_filter oval;
165	oval.data = 0xffffffff;	191	oval.data = 0xffffffff;
…		…
174	// this I really consider a linux bug. I am neither connected	200	// this I really consider a linux bug. I am neither connected
175	// 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
176	// fragment for me sometimes.	202	// fragment for me sometimes.
177	{	203	{
178	int oval = IP_PMTUDISC_DONT;	204	int oval = IP_PMTUDISC_DONT;
179	setsockopt (udpv4_fd, SOL_IP, IP_MTU_DISCOVER, &oval, sizeof oval);	205	setsockopt (icmpv4_fd, SOL_IP, IP_MTU_DISCOVER, &oval, sizeof oval);
180	}	206	}
181	#endif	207	#endif
182		208
183	sockinfo si (THISNODE, PROT_ICMPv4);	209	sockinfo si (THISNODE, PROT_ICMPv4);
184		210
185	if (bind (icmpv4_fd, si.sav4 (), si.salenv4 ()))	211	if (bind (icmpv4_fd, si.sav4 (), si.salenv4 ()))
186	{	212	{
187	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));
188	exit (1);	214	exit (EXIT_FAILURE);
189	}	215	}
190		216
191	icmpv4_ev_watcher.start (icmpv4_fd, POLLIN);	217	icmpv4_ev_watcher.start (icmpv4_fd, EV_READ);
192	}	218	}
193	#endif	219	#endif
194		220
195	tcpv4_fd = -1;	221	tcpv4_fd = -1;
196		222
…		…
201		227
202	if (tcpv4_fd < 0)	228	if (tcpv4_fd < 0)
203	return -1;	229	return -1;
204		230
205	fcntl (tcpv4_fd, F_SETFL, O_NONBLOCK);	231	fcntl (tcpv4_fd, F_SETFL, O_NONBLOCK);
		232	fcntl (tcpv4_fd, F_SETFD, FD_CLOEXEC);
206		233
207	// standard daemon practise...	234	// standard daemon practise...
208	{	235	{
209	int oval = 1;	236	int oval = 1;
210	setsockopt (tcpv4_fd, SOL_SOCKET, SO_REUSEADDR, &oval, sizeof oval);	237	setsockopt (tcpv4_fd, SOL_SOCKET, SO_REUSEADDR, &oval, sizeof oval);
…		…
213	sockinfo si (THISNODE, PROT_TCPv4);	240	sockinfo si (THISNODE, PROT_TCPv4);
214		241
215	if (bind (tcpv4_fd, si.sav4 (), si.salenv4 ()))	242	if (bind (tcpv4_fd, si.sav4 (), si.salenv4 ()))
216	{	243	{
217	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));
218	exit (1);	245	exit (EXIT_FAILURE);
219	}	246	}
220		247
221	if (listen (tcpv4_fd, 5))	248	if (listen (tcpv4_fd, 5))
222	{	249	{
223	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));
224	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);
225	}	278	}
226
227	tcpv4_ev_watcher.start (tcpv4_fd, POLLIN);
228	}
229	#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	/////////////////////////////////////////////////////////////////////////////
230		306
231	tap = new tap_device ();	307	tap = new tap_device ();
232	if (!tap) //D this, of course, never catches	308	if (!tap) //D this, of course, never catches
233	{	309	{
234	slog (L_ERR, _("cannot create network interface '%s'"), conf.ifname);	310	slog (L_ERR, _("cannot create network interface '%s'"), conf.ifname);
235	exit (1);	311	exit (EXIT_FAILURE);
236	}	312	}
237		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
238	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	}
239		329
240	tap_ev_watcher.start (tap->fd, POLLIN);	330	tap_ev_watcher.start (tap->fd, EV_READ);
241
242	reconnect_all ();
243		331
244	return 0;	332	return 0;
245	}
246
247	// send a vpn packet out to other hosts
248	bool
249	vpn::send_vpn_packet (vpn_packet *pkt, const sockinfo &si, int tos)
250	{
251	switch (si.prot)
252	{
253	case PROT_IPv4:
254	return send_ipv4_packet (pkt, si, tos);
255
256	case PROT_UDPv4:
257	return send_udpv4_packet (pkt, si, tos);
258
259	#if ENABLE_TCP
260	case PROT_TCPv4:
261	return send_tcpv4_packet (pkt, si, tos);
262	#endif
263
264	#if ENABLE_ICMP
265	case PROT_ICMPv4:
266	return send_icmpv4_packet (pkt, si, tos);
267	#endif
268
269	default:
270	slog (L_CRIT, _("%s: FATAL: trying to send packet with unsupported protocol"), (const char *)si);
271	return false;
272	}
273	}	333	}
274		334
275	bool	335	bool
276	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)
277	{	337	{
…		…
396	else	456	else
397	c->recv_vpn_packet (pkt, rsi);	457	c->recv_vpn_packet (pkt, rsi);
398	}	458	}
399	}	459	}
400		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
401	void	490	void
402	vpn::ipv4_ev (io_watcher &w, short revents)	491	vpn::ipv4_ev (ev::io &w, int revents)
403	{	492	{
404	if (revents & (POLLIN \| POLLERR))	493	if (revents & EV_READ)
405	{	494	{
406	vpn_packet *pkt = new vpn_packet;	495	vpn_packet *pkt = new vpn_packet;
407	struct sockaddr_in sa;	496	struct sockaddr_in sa;
408	socklen_t sa_len = sizeof (sa);	497	socklen_t sa_len = sizeof (sa);
409	int len;	498	int len;
…		…
414		503
415	if (len > 0)	504	if (len > 0)
416	{	505	{
417	pkt->len = len;	506	pkt->len = len;
418		507
419	// 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
420	// this is slow, but...
421	pkt->skip_hdr (IP_OVERHEAD);	509	pkt->skip_hdr (IP_OVERHEAD);
422		510
423	recv_vpn_packet (pkt, si);	511	recv_vpn_packet (pkt, si);
424	}	512	}
425	else	513	else
…		…
428	slog (L_DEBUG, _("%s: %s"), (const char *)si, strerror (errno));	516	slog (L_DEBUG, _("%s: %s"), (const char *)si, strerror (errno));
429	}	517	}
430		518
431	delete pkt;	519	delete pkt;
432	}	520	}
433	else if (revents & POLLHUP)
434	{
435	// this cannot ;) happen on udp sockets
436	slog (L_ERR, _("FATAL: POLLHUP on ipv4 fd, terminating."));
437	exit (1);
438	}
439	else	521	else
440	{	522	{
441	slog (L_ERR,	523	slog (L_ERR,
442	_("FATAL: unknown revents %08x in socket, terminating\n"),	524	_("FATAL: unknown revents %08x in socket, terminating\n"),
443	revents);	525	revents);
444	exit (1);	526	exit (EXIT_FAILURE);
445	}	527	}
446	}	528	}
447		529
448	#if ENABLE_ICMP	530	#if ENABLE_ICMP
449	void	531	void
450	vpn::icmpv4_ev (io_watcher &w, short revents)	532	vpn::icmpv4_ev (ev::io &w, int revents)
451	{	533	{
452	if (revents & (POLLIN \| POLLERR))	534	if (revents & EV_READ)
453	{	535	{
454	vpn_packet *pkt = new vpn_packet;	536	vpn_packet *pkt = new vpn_packet;
455	struct sockaddr_in sa;	537	struct sockaddr_in sa;
456	socklen_t sa_len = sizeof (sa);	538	socklen_t sa_len = sizeof (sa);
457	int len;	539	int len;
…		…
482	slog (L_DEBUG, _("%s: %s"), (const char *)si, strerror (errno));	564	slog (L_DEBUG, _("%s: %s"), (const char *)si, strerror (errno));
483	}	565	}
484		566
485	delete pkt;	567	delete pkt;
486	}	568	}
487	else if (revents & POLLHUP)
488	{
489	// this cannot ;) happen on udp sockets
490	slog (L_ERR, _("FATAL: POLLHUP on icmpv4 fd, terminating."));
491	exit (1);
492	}
493	else	569	else
494	{	570	{
495	slog (L_ERR,	571	slog (L_ERR,
496	_("FATAL: unknown revents %08x in socket, terminating\n"),	572	_("FATAL: unknown revents %08x in socket, terminating\n"),
497	revents);	573	revents);
498	exit (1);	574	exit (EXIT_FAILURE);
499	}	575	}
500	}	576	}
501	#endif	577	#endif
502		578
503	void	579	void
504	vpn::udpv4_ev (io_watcher &w, short revents)	580	vpn::udpv4_ev (ev::io &w, int revents)
505	{	581	{
506	if (revents & (POLLIN \| POLLERR))	582	if (revents & EV_READ)
507	{	583	{
508	vpn_packet *pkt = new vpn_packet;	584	vpn_packet *pkt = new vpn_packet;
509	struct sockaddr_in sa;	585	struct sockaddr_in sa;
510	socklen_t sa_len = sizeof (sa);	586	socklen_t sa_len = sizeof (sa);
511	int len;	587	int len;
…		…
526	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));
527	}	603	}
528		604
529	delete pkt;	605	delete pkt;
530	}	606	}
531	else if (revents & POLLHUP)
532	{
533	// this cannot ;) happen on udp sockets
534	slog (L_ERR, _("FATAL: POLLHUP on udp v4 fd, terminating."));
535	exit (1);
536	}
537	else	607	else
538	{	608	{
539	slog (L_ERR,	609	slog (L_ERR,
540	_("FATAL: unknown revents %08x in socket, terminating\n"),	610	_("FATAL: unknown revents %08x in socket, terminating\n"),
541	revents);	611	revents);
542	exit (1);	612	exit (EXIT_FAILURE);
543	}	613	}
544	}	614	}
545		615
546	void	616	void
547	vpn::tap_ev (io_watcher &w, short revents)	617	vpn::tap_ev (ev::io &w, int revents)
548	{	618	{
549	if (revents & POLLIN)	619	if (revents & EV_READ)
550	{	620	{
551	/* process data */	621	/* process data */
552	tap_packet *pkt;	622	tap_packet *pkt;
553		623
554	pkt = tap->recv ();	624	pkt = tap->recv ();
…		…
561	int dst = mac2id (pkt->dst);	631	int dst = mac2id (pkt->dst);
562	int src = mac2id (pkt->src);	632	int src = mac2id (pkt->src);
563		633
564	if (src != THISNODE->id)	634	if (src != THISNODE->id)
565	{	635	{
566	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."));
567	exit (1);	637	exit (EXIT_FAILURE);
568	}	638	}
569		639
570	if (dst == THISNODE->id)	640	if (dst == THISNODE->id)
571	{	641	{
572	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."));
573	exit (1);	643	exit (EXIT_FAILURE);
574	}	644	}
575		645
576	if (dst > conns.size ())	646	if (dst > conns.size ())
577	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);
578	else	648	else
579	inject_data_packet (pkt, dst);	649	inject_data_packet (pkt, dst);
580	}	650	}
581		651
582	delete pkt;	652	delete pkt;
583	}	653	}
584	else if (revents & (POLLHUP \| POLLERR))
585	{
586	slog (L_ERR, _("FATAL: POLLHUP or POLLERR on network device fd, terminating."));
587	exit (1);
588	}
589	else	654	else
590	abort ();	655	abort ();
591	}	656	}
592		657
593	void	658	void
594	vpn::event_cb (time_watcher &w)	659	vpn::event_cb (ev::timer &w, int)
595	{	660	{
596	if (events)	661	if (events)
597	{	662	{
598	if (events & EVENT_SHUTDOWN)	663	if (events & EVENT_SHUTDOWN)
599	{	664	{
600	slog (L_INFO, _("preparing shutdown..."));	665	slog (L_INFO, _("preparing shutdown..."));
601		666
602	shutdown_all ();	667	shutdown_all ();
603
604	remove_pid (pidfilename);	668	remove_pid (conf.pidfilename);
605
606	slog (L_INFO, _("terminating"));	669	slog (L_INFO, _("terminating"));
607		670	exit (EXIT_SUCCESS);
608	exit (0);
609	}	671	}
610		672
611	if (events & EVENT_RECONNECT)	673	if (events & EVENT_RECONNECT)
612	{	674	{
613	slog (L_INFO, _("forced reconnect"));	675	slog (L_INFO, _("forced reconnect"));
…		…
615	reconnect_all ();	677	reconnect_all ();
616	}	678	}
617		679
618	events = 0;	680	events = 0;
619	}	681	}
620
621	w.at = TSTAMP_CANCEL;
622	}	682	}
623		683
624	void	684	void
625	vpn::shutdown_all ()	685	vpn::shutdown_all ()
626	{	686	{
…		…
639	connection_init ();	699	connection_init ();
640		700
641	for (configuration::node_vector::iterator i = conf.nodes.begin ();	701	for (configuration::node_vector::iterator i = conf.nodes.begin ();
642	i != conf.nodes.end (); ++i)	702	i != conf.nodes.end (); ++i)
643	{	703	{
644	connection *conn = new connection (this);	704	connection conn = new connection (this, i);
645
646	conn->conf = *i;
647	conns.push_back (conn);	705	conns.push_back (conn);
648
649	conn->establish_connection ();	706	conn->establish_connection ();
650	}	707	}
651	}	708	}
652		709
653	connection *vpn::find_router ()	710	connection *vpn::find_router ()
…		…
698	}	755	}
699		756
700	void	757	void
701	vpn::dump_status ()	758	vpn::dump_status ()
702	{	759	{
703	slog (L_NOTICE, _("BEGIN status dump (%ld)"), (long)NOW);	760	slog (L_NOTICE, _("BEGIN status dump (%ld)"), (long)ev_now ());
704		761
705	for (conns_vector::iterator c = conns.begin (); c != conns.end (); ++c)	762	for (conns_vector::iterator c = conns.begin (); c != conns.end (); ++c)
706	(*c)->dump_status ();	763	(*c)->dump_status ();
707		764
708	slog (L_NOTICE, _("END status dump"));	765	slog (L_NOTICE, _("END status dump"));
…		…
716	, tcpv4_ev_watcher (this, &vpn::tcpv4_ev)	773	, tcpv4_ev_watcher (this, &vpn::tcpv4_ev)
717	#endif	774	#endif
718	#if ENABLE_ICMP	775	#if ENABLE_ICMP
719	, icmpv4_ev_watcher(this, &vpn::icmpv4_ev)	776	, icmpv4_ev_watcher(this, &vpn::icmpv4_ev)
720	#endif	777	#endif
		778	#if ENABLE_DNS
		779	, dnsv4_ev_watcher (this, &vpn::dnsv4_ev)
		780	#endif
721	, tap_ev_watcher (this, &vpn::tap_ev)	781	, tap_ev_watcher (this, &vpn::tap_ev)
722	{	782	{
723	}	783	}
724		784
725	vpn::~vpn ()	785	vpn::~vpn ()

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Comparing gvpe/src/vpn.C (file contents): Revision 1.20 by pcg, Thu Oct 16 14:12:00 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 1.20 by pcg, Thu Oct 16 14:12:00 2003 UTC vs.
Revision 1.40 by pcg, Sat Dec 1 23:35:31 2007 UTC