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

Comparing gvpe/src/vpn.C (file contents):
Revision 1.2 by pcg, Wed Apr 2 05:15:00 2003 UTC vs.
Revision 1.51 by pcg, Sun Aug 10 14:48:57 2008 UTC

…		…
1	/*	1	/*
2	vpn.C -- handle the protocol, encryption, handshaking etc.	2	vpn.C -- handle the protocol, encryption, handshaking etc.
		3	Copyright (C) 2003-2008 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 it
5	it under the terms of the GNU General Public License as published by	8	under the terms of the GNU General Public License as published by the
6	the Free Software Foundation; either version 2 of the License, or	9	Free Software Foundation; either version 3 of the License, or (at your
7	(at your option) any later version.	10	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, but
10	but WITHOUT ANY WARRANTY; without even the implied warranty of	13	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 GNU General
12	GNU General Public License for more details.	15	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 along
15	along with this program; if not, write to the Free Software	18	with this program; if not, see <http://www.gnu.org/licenses/>.
16	Foundation, Inc. 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA	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.
17	*/	30	*/
18		31
19	#include "config.h"	32	#include "config.h"
20		33
21	#include <list>	34	#include <list>
22		35
		36	#include <cstdio>
		37	#include <cstring>
23	#include <cstdlib>	38	#include <cstdlib>
24	#include <cstring>
25	#include <cstdio>
26		39
27	#include <sys/types.h>	40	#include <sys/types.h>
28	#include <sys/socket.h>	41	#include <sys/socket.h>
29	#include <sys/poll.h>
30	#include <sys/wait.h>	42	#include <sys/wait.h>
31	#include <netinet/in.h>
32	#include <arpa/inet.h>
33	#include <errno.h>	43	#include <errno.h>
34	#include <time.h>	44	#include <time.h>
35	#include <unistd.h>	45	#include <unistd.h>
		46	#include <fcntl.h>
		47	#include <sys/socket.h>
		48
		49	#include "netcompat.h"
36		50
37	#include "pidfile.h"	51	#include "pidfile.h"
38		52
39	#include "connection.h"	53	#include "connection.h"
40	#include "util.h"	54	#include "util.h"
41	#include "vpn.h"	55	#include "vpn.h"
42		56
43	#if ENABLE_TCP	57	vpn network; // THE vpn (bad design...)
44	# include <map>
45	# include <unistd.h>
46	# include <fcntl.h>
47	# include <sys/poll.h>
48	#endif
49		58
50	/////////////////////////////////////////////////////////////////////////////	59	/////////////////////////////////////////////////////////////////////////////
51		60
52	const char *vpn::script_if_up ()	61	static void inline
		62	set_tos (int fd, int &tos_prev, int tos)
		63	{
		64	#if defined(SOL_IP) && defined(IP_TOS)
		65	if (tos_prev == tos)
		66	return;
		67
		68	tos_prev = tos;
		69	setsockopt (fd, SOL_IP, IP_TOS, &tos, sizeof tos);
		70	#endif
		71	}
		72
		73	void
		74	vpn::script_init_env ()
53	{	75	{
54	// the tunnel device mtu should be the physical mtu - overhead	76	// the tunnel device mtu should be the physical mtu - overhead
55	// the tricky part is rounding to the cipher key blocksize	77	// the tricky part is rounding to the cipher key blocksize
56	int mtu = conf.mtu - ETH_OVERHEAD - VPE_OVERHEAD - MAX_OVERHEAD;	78	int mtu = conf.mtu - ETH_OVERHEAD - VPE_OVERHEAD - MAX_OVERHEAD;
57	mtu += ETH_OVERHEAD - 6 - 6; // now we have the data portion	79	mtu += ETH_OVERHEAD - 6 - 6; // now we have the data portion
58	mtu -= mtu % EVP_CIPHER_block_size (CIPHER); // round	80	mtu -= mtu % EVP_CIPHER_block_size (CIPHER); // round
59	mtu -= ETH_OVERHEAD - 6 - 6; // and get interface mtu again	81	mtu -= ETH_OVERHEAD - 6 - 6; // and get interface mtu again
60		82
61	char *env;	83	char *env;
62	asprintf (&env, "CONFBASE=%s", confbase);	84	asprintf (&env, "CONFBASE=%s", confbase); putenv (env);
63	putenv (env);
64	asprintf (&env, "NODENAME=%s", THISNODE->nodename);
65	putenv (env);
66	asprintf (&env, "NODEID=%d", THISNODE->id);
67	putenv (env);
68	asprintf (&env, "IFNAME=%s", tap->interface ());	85	asprintf (&env, "IFNAME=%s", tap->interface ()); putenv (env);
69	putenv (env);	86	asprintf (&env, "IFTYPE=%s", IFTYPE); putenv (env);
		87	asprintf (&env, "IFSUBTYPE=%s", IFSUBTYPE); putenv (env);
70	asprintf (&env, "MTU=%d", mtu);	88	asprintf (&env, "MTU=%d", mtu); putenv (env);
71	putenv (env);	89	asprintf (&env, "NODES=%d", conns.size ()); putenv (env);
72	asprintf (&env, "MAC=%02x:%02x:%02x:%02x:%02x:%02x",	90	asprintf (&env, "NODEID=%d", THISNODE->id); putenv (env);
73	0xfe, 0xfd, 0x80, 0x00, THISNODE->id >> 8,
74	THISNODE->id & 0xff);
75	putenv (env);
76		91
		92	conns [THISNODE->id - 1]->script_init_env ("");
		93
		94	for (conns_vector::iterator c = conns.begin (); c != conns.end (); ++c)
		95	{
		96	char ext[16];
		97	snprintf (ext, 16, "_%d", (*c)->conf->id);
		98	(*c)->script_init_env (ext);
		99	}
		100	}
		101
		102	inline const char *
		103	vpn::script_if_init ()
		104	{
		105	script_init_env ();
		106
		107	return tap->if_up ();
		108	}
		109
		110	inline const char *
		111	vpn::script_if_up ()
		112	{
		113	script_init_env ();
		114
		115	char *filename;
		116	asprintf (&filename,
		117	"%s/%s",
		118	confbase,
77	return ::conf.script_if_up ? ::conf.script_if_up : "if-up";	119	::conf.script_if_up ? ::conf.script_if_up : "if-up");
		120
		121	return filename;
78	}	122	}
79		123
80	int	124	int
81	vpn::setup ()	125	vpn::setup ()
82	{	126	{
		127	int success = 0;
		128
		129	ipv4_tos = -1;
83	udpv4_fd = -1;	130	ipv4_fd = -1;
84		131
85	if (THISNODE->protocols & PROT_UDPv4)	132	if (THISNODE->protocols & PROT_IPv4 && ::conf.ip_proto)
86	{	133	{
87	udpv4_fd = socket (PF_INET, SOCK_DGRAM, IPPROTO_UDP);	134	ipv4_fd = socket (PF_INET, SOCK_RAW, ::conf.ip_proto);
88		135
89	if (udpv4_fd < 0)	136	if (ipv4_fd < 0)
90	return -1;	137	return -1;
91		138
92	sockinfo si (THISNODE, PROT_UDPv4);	139	fcntl (ipv4_fd, F_SETFL, O_NONBLOCK);
		140	fcntl (ipv4_fd, F_SETFD, FD_CLOEXEC);
93		141
94	if (bind (udpv4_fd, si.sav4 (), si.salenv4 ()))	142	#if defined(SOL_IP) && defined(IP_MTU_DISCOVER)
95	{
96	slog (L_ERR, _("can't bind udpv4 on %s: %s"), (const char *)si, strerror (errno));
97	exit (1);
98	}
99
100	#ifdef IP_MTU_DISCOVER
101	// this I really consider a linux bug. I am neither connected	143	// this I really consider a linux bug. I am neither connected
102	// nor do I fragment myself. Linux still sets DF and doesn't	144	// nor do I fragment myself. Linux still sets DF and doesn't
103	// fragment for me sometimes.	145	// fragment for me sometimes.
104	{	146	{
105	int oval = IP_PMTUDISC_DONT;	147	int oval = IP_PMTUDISC_DONT;
106	setsockopt (udpv4_fd, SOL_IP, IP_MTU_DISCOVER, &oval, sizeof oval);	148	setsockopt (ipv4_fd, SOL_IP, IP_MTU_DISCOVER, &oval, sizeof oval);
		149	}
		150	#endif
		151
		152	sockinfo si (THISNODE, PROT_IPv4);
		153
		154	if (bind (ipv4_fd, si.sav4 (), si.salenv4 ()))
		155	{
		156	slog (L_ERR, _("can't bind ipv4 socket on %s: %s, exiting."), (const char *)si, strerror (errno));
		157	exit (EXIT_FAILURE);
107	}	158	}
108	#endif	159
		160	ipv4_ev_watcher.start (ipv4_fd, EV_READ);
		161	++success;
		162	}
		163	else
		164	THISNODE->protocols &= ~PROT_IPv4;
		165
		166	udpv4_tos = -1;
		167	udpv4_fd = -1;
		168
		169	if (THISNODE->protocols & PROT_UDPv4 && THISNODE->udp_port)
		170	{
		171	udpv4_fd = socket (PF_INET, SOCK_DGRAM, IPPROTO_UDP);
		172
		173	if (udpv4_fd < 0)
		174	return -1;
		175
		176	fcntl (udpv4_fd, F_SETFL, O_NONBLOCK);
		177	fcntl (udpv4_fd, F_SETFD, FD_CLOEXEC);
109		178
110	// standard daemon practise...	179	// standard daemon practise...
111	{	180	{
112	int oval = 1;	181	int oval = 1;
113	setsockopt (udpv4_fd, SOL_SOCKET, SO_REUSEADDR, &oval, sizeof oval);	182	setsockopt (udpv4_fd, SOL_SOCKET, SO_REUSEADDR, &oval, sizeof oval);
114	}	183	}
115		184
116	udpv4_ev_watcher.start (udpv4_fd, POLLIN);	185	#if defined(SOL_IP) && defined(IP_MTU_DISCOVER)
117	}
118
119	ipv4_fd = -1;
120	if (THISNODE->protocols & PROT_IPv4)
121	{
122	ipv4_fd = socket (PF_INET, SOCK_RAW, ::conf.ip_proto);
123
124	if (ipv4_fd < 0)
125	return -1;
126
127	sockinfo si (THISNODE, PROT_IPv4);
128
129	if (bind (ipv4_fd, si.sav4 (), si.salenv4 ()))
130	{
131	slog (L_ERR, _("can't bind ipv4 socket on %s: %s"), (const char *)si, strerror (errno));
132	exit (1);
133	}
134
135	#ifdef IP_MTU_DISCOVER
136	// this I really consider a linux bug. I am neither connected	186	// this I really consider a linux bug. I am neither connected
137	// nor do I fragment myself. Linux still sets DF and doesn't	187	// nor do I fragment myself. Linux still sets DF and doesn't
138	// fragment for me sometimes.	188	// fragment for me sometimes.
139	{	189	{
140	int oval = IP_PMTUDISC_DONT;	190	int oval = IP_PMTUDISC_DONT;
		191	setsockopt (udpv4_fd, SOL_IP, IP_MTU_DISCOVER, &oval, sizeof oval);
		192	}
		193	#endif
		194
		195	sockinfo si (THISNODE, PROT_UDPv4);
		196
		197	if (bind (udpv4_fd, si.sav4 (), si.salenv4 ()))
		198	{
		199	slog (L_ERR, _("can't bind udpv4 on %s: %s, exiting."), (const char *)si, strerror (errno));
		200	exit (EXIT_FAILURE);
		201	}
		202
		203	udpv4_ev_watcher.start (udpv4_fd, EV_READ);
		204	++success;
		205	}
		206	else
		207	THISNODE->protocols &= ~PROT_UDPv4;
		208
		209	icmpv4_tos = -1;
		210	icmpv4_fd = -1;
		211
		212	#if ENABLE_ICMP
		213	if (THISNODE->protocols & PROT_ICMPv4)
		214	{
		215	icmpv4_fd = socket (PF_INET, SOCK_RAW, IPPROTO_ICMP);
		216
		217	if (icmpv4_fd < 0)
		218	return -1;
		219
		220	fcntl (icmpv4_fd, F_SETFL, O_NONBLOCK);
		221	fcntl (icmpv4_fd, F_SETFD, FD_CLOEXEC);
		222
		223	#ifdef ICMP_FILTER
		224	{
		225	icmp_filter oval;
		226	oval.data = 0xffffffff;
		227	if (::conf.icmp_type < 32)
		228	oval.data &= ~(1 << ::conf.icmp_type);
		229
		230	setsockopt (icmpv4_fd, SOL_RAW, ICMP_FILTER, &oval, sizeof oval);
		231	}
		232	#endif
		233
		234	#if defined(SOL_IP) && defined(IP_MTU_DISCOVER)
		235	// this I really consider a linux bug. I am neither connected
		236	// nor do I fragment myself. Linux still sets DF and doesn't
		237	// fragment for me sometimes.
		238	{
		239	int oval = IP_PMTUDISC_DONT;
141	setsockopt (ipv4_fd, SOL_IP, IP_MTU_DISCOVER, &oval, sizeof oval);	240	setsockopt (icmpv4_fd, SOL_IP, IP_MTU_DISCOVER, &oval, sizeof oval);
		241	}
		242	#endif
		243
		244	sockinfo si (THISNODE, PROT_ICMPv4);
		245
		246	if (bind (icmpv4_fd, si.sav4 (), si.salenv4 ()))
		247	{
		248	slog (L_ERR, _("can't bind icmpv4 on %s: %s, exiting."), (const char *)si, strerror (errno));
		249	exit (EXIT_FAILURE);
142	}	250	}
143	#endif
144		251
145	ipv4_ev_watcher.start (ipv4_fd, POLLIN);	252	icmpv4_ev_watcher.start (icmpv4_fd, EV_READ);
		253	++success;
146	}	254	}
		255	#endif
		256
		257	tcpv4_fd = -1;
147		258
148	#if ENABLE_TCP	259	#if ENABLE_TCP
149	if (THISNODE->protocols & PROT_TCPv4)	260	if (THISNODE->protocols & PROT_TCPv4 && THISNODE->tcp_port)
150	{	261	{
151	tcpv4_fd = socket (PF_INET, SOCK_STREAM, IPPROTO_TCP);	262	tcpv4_fd = socket (PF_INET, SOCK_STREAM, IPPROTO_TCP);
152		263
153	if (tcpv4_fd < 0)	264	if (tcpv4_fd < 0)
154	return -1;	265	return -1;
155		266
156	sockinfo si (THISNODE, PROT_TCPv4);	267	fcntl (tcpv4_fd, F_SETFL, O_NONBLOCK);
157		268	fcntl (tcpv4_fd, F_SETFD, FD_CLOEXEC);
158	if (bind (tcpv4_fd, si.sav4 (), si.salenv4 ()))
159	{
160	slog (L_ERR, _("can't bind tcpv4 on %s: %s"), (const char *)si, strerror (errno));
161	exit (1);
162	}
163
164	if (listen (tcpv4_fd, 5))
165	{
166	slog (L_ERR, _("can't listen tcpv4 on %s: %s"), (const char *)si, strerror (errno));
167	exit (1);
168	}
169		269
170	// standard daemon practise...	270	// standard daemon practise...
171	{	271	{
172	int oval = 1;	272	int oval = 1;
173	setsockopt (tcpv4_fd, SOL_SOCKET, SO_REUSEADDR, &oval, sizeof oval);	273	setsockopt (tcpv4_fd, SOL_SOCKET, SO_REUSEADDR, &oval, sizeof oval);
174	}	274	}
175		275
		276	sockinfo si (THISNODE, PROT_TCPv4);
		277
		278	if (bind (tcpv4_fd, si.sav4 (), si.salenv4 ()))
		279	{
		280	slog (L_ERR, _("can't bind tcpv4 on %s: %s, exiting."), (const char *)si, strerror (errno));
		281	exit (EXIT_FAILURE);
		282	}
		283
		284	if (listen (tcpv4_fd, 5))
		285	{
		286	slog (L_ERR, _("can't listen tcpv4 on %s: %s, exiting."), (const char *)si, strerror (errno));
		287	exit (EXIT_FAILURE);
		288	}
		289
176	tcpv4_accept_watcher.start (tcpv4_fd, POLLIN);	290	tcpv4_ev_watcher.start (tcpv4_fd, EV_READ);
		291	++success;
		292	}
		293	else
		294	THISNODE->protocols &= ~PROT_TCPv4;
		295	#endif
		296
		297	dnsv4_tos = -1;
		298	dnsv4_fd = -1;
		299
		300	#if ENABLE_DNS
		301	if (THISNODE->protocols & PROT_DNSv4)
		302	{
		303	dns_forwarder.set (::conf.dns_forw_host, ::conf.dns_forw_port, PROT_DNSv4);
		304
		305	dnsv4_fd = socket (PF_INET, SOCK_DGRAM, IPPROTO_UDP);
		306
		307	if (dnsv4_fd < 0)
		308	return -1;
		309
		310	fcntl (dnsv4_fd, F_SETFL, O_NONBLOCK);
		311	fcntl (dnsv4_fd, F_SETFD, FD_CLOEXEC);
		312
		313	# if defined(SOL_IP) && defined(IP_MTU_DISCOVER)
		314	// this I really consider a linux bug. I am neither connected
		315	// nor do I fragment myself. Linux still sets DF and doesn't
		316	// fragment for me sometimes.
		317	{
		318	int oval = IP_PMTUDISC_DONT;
		319	setsockopt (dnsv4_fd, SOL_IP, IP_MTU_DISCOVER, &oval, sizeof oval);
177	}	320	}
178	#endif	321	# endif
		322
		323	// standard daemon practise...
		324	{
		325	int oval = 1;
		326	setsockopt (dnsv4_fd, SOL_SOCKET, SO_REUSEADDR, &oval, sizeof oval);
		327	}
		328
		329	sockinfo si (THISNODE->dns_hostname,
		330	THISNODE->dns_hostname ? THISNODE->dns_port : 0,
		331	PROT_DNSv4);
		332
		333	if (bind (dnsv4_fd, si.sav4 (), si.salenv4 ()))
		334	{
		335	slog (L_ERR, _("can't bind dnsv4 on %s: %s, exiting."), (const char *)si, strerror (errno));
		336	exit (EXIT_FAILURE);
		337	}
		338
		339	dnsv4_ev_watcher.start (dnsv4_fd, EV_READ);
		340	++success;
		341	}
		342	#endif
		343
		344	/////////////////////////////////////////////////////////////////////////////
		345
		346	if (!success)
		347	{
		348	slog (L_ERR, _("no protocols enabled, exiting."));
		349	exit (EXIT_FAILURE);
		350	}
		351
		352	reconnect_all ();
		353
		354	/////////////////////////////////////////////////////////////////////////////
179		355
180	tap = new tap_device ();	356	tap = new tap_device ();
181	if (!tap) //D this, of course, never catches	357	if (!tap) //D this, of course, never catches
182	{	358	{
183	slog (L_ERR, _("cannot create network interface '%s'"), conf.ifname);	359	slog (L_ERR, _("cannot create network interface '%s', exiting."), conf.ifname);
184	exit (1);	360	exit (EXIT_FAILURE);
185	}	361	}
186		362
187	run_script (run_script_cb (this, &vpn::script_if_up), true);	363	fcntl (tap->fd, F_SETFD, FD_CLOEXEC);
188		364
		365	run_script_cb cb;
		366	cb.set<vpn, &vpn::script_if_init> (this);
		367
		368	if (tap->if_up () &&
		369	!run_script (cb, true))
		370	{
		371	slog (L_ERR, _("interface initialization command '%s' failed, exiting."),
		372	tap->if_up ());
		373	exit (EXIT_FAILURE);
		374	}
		375
		376	cb.set<vpn, &vpn::script_if_up> (this);
		377	if (!run_script (cb, true))
		378	{
		379	slog (L_ERR, _("if-up command execution failed, exiting."));
		380	exit (EXIT_FAILURE);
		381	}
		382
189	tap_ev_watcher.start (tap->fd, POLLIN);	383	tap_ev_watcher.start (tap->fd, EV_READ);
190
191	reconnect_all ();
192		384
193	return 0;	385	return 0;
194	}	386	}
195		387
		388	bool
		389	vpn::send_ipv4_packet (vpn_packet *pkt, const sockinfo &si, int tos)
		390	{
		391	set_tos (ipv4_fd, ipv4_tos, tos);
		392	sendto (ipv4_fd, &((*pkt)[0]), pkt->len, 0, si.sav4 (), si.salenv4 ());
		393
		394	return true;
		395	}
		396
		397	static u16
		398	ipv4_checksum (u16 *data, unsigned int len)
		399	{
		400	// use 32 bit accumulator and fold back carry bits at the end
		401	u32 sum = 0;
		402
		403	while (len > 1)
		404	{
		405	sum += *data++;
		406	len -= 2;
		407	}
		408
		409	// odd byte left?
		410	if (len)
		411	sum += (u8 )data;
		412
		413	// add back carry bits
		414	sum = (sum >> 16) + (sum & 0xffff); // lo += hi
		415	sum += (sum >> 16); // carry
		416
		417	return ~sum;
		418	}
		419
		420	#if ENABLE_ICMP
		421	bool
		422	vpn::send_icmpv4_packet (vpn_packet *pkt, const sockinfo &si, int tos)
		423	{
		424	pkt->unshift_hdr (4);
		425
		426	icmp_header hdr = (icmp_header )&((*pkt)[0]);
		427	hdr->type = ::conf.icmp_type;
		428	hdr->code = 255;
		429	hdr->checksum = 0;
		430	hdr->checksum = ipv4_checksum ((u16 *)hdr, pkt->len);
		431
		432	set_tos (icmpv4_fd, icmpv4_tos, tos);
		433	sendto (icmpv4_fd, &((*pkt)[0]), pkt->len, 0, si.sav4 (), si.salenv4 ());
		434
		435	return true;
		436	}
		437	#endif
		438
		439	bool
		440	vpn::send_udpv4_packet (vpn_packet *pkt, const sockinfo &si, int tos)
		441	{
		442	set_tos (udpv4_fd, udpv4_tos, tos);
		443	sendto (udpv4_fd, &((*pkt)[0]), pkt->len, 0, si.sav4 (), si.salenv4 ());
		444
		445	return true;
		446	}
		447
196	void	448	void
197	vpn::send_ipv4_packet (vpn_packet *pkt, const sockinfo &si, int tos)	449	vpn::inject_data_packet (tap_packet *pkt, int dst)
198	{	450	{
199	setsockopt (ipv4_fd, SOL_IP, IP_TOS, &tos, sizeof tos);	451	if (dst)
200	sendto (ipv4_fd, &((*pkt)[0]), pkt->len, 0, si.sav4 (), si.salenv4 ());	452	{
201	}	453	// unicast
202		454	if (dst != THISNODE->id)
203	void	455	conns[dst - 1]->inject_data_packet (pkt);
204	vpn::send_udpv4_packet (vpn_packet *pkt, const sockinfo &si, int tos)	456	}
205	{	457	else
206	setsockopt (udpv4_fd, SOL_IP, IP_TOS, &tos, sizeof tos);	458	{
207	sendto (udpv4_fd, &((*pkt)[0]), pkt->len, 0, si.sav4 (), si.salenv4 ());	459	// broadcast, this is ugly, but due to the security policy
		460	// we have to connect to all hosts...
		461	for (conns_vector::iterator c = conns.begin (); c != conns.end (); ++c)
		462	if ((*c)->conf != THISNODE)
		463	(*c)->inject_data_packet (pkt);
		464	}
208	}	465	}
209		466
210	void	467	void
211	vpn::recv_vpn_packet (vpn_packet *pkt, const sockinfo &rsi)	468	vpn::recv_vpn_packet (vpn_packet *pkt, const sockinfo &rsi)
212	{	469	{
213	unsigned int src = pkt->src ();	470	unsigned int src = pkt->src ();
214	unsigned int dst = pkt->dst ();	471	unsigned int dst = pkt->dst ();
215		472
216	slog (L_NOISE, _("<<?/%s received possible vpn packet type %d from %d to %d, length %d"),	473	slog (L_NOISE, _("<<?/%s received possible vpn packet type %d from %d to %d, length %d."),
217	(const char *)rsi, pkt->typ (), pkt->src (), pkt->dst (), pkt->len);	474	(const char *)rsi, pkt->typ (), pkt->src (), pkt->dst (), pkt->len);
218		475
219	if (src == 0 \|\| src > conns.size ()	476	if (src == 0 \|\| src > conns.size ()
220	\|\| dst > conns.size ()	477	\|\| dst > conns.size ()
221	\|\| pkt->typ () >= vpn_packet::PT_MAX)	478	\|\| pkt->typ () >= vpn_packet::PT_MAX)
222	slog (L_WARN, _("(%s): received corrupted packet type %d (src %d, dst %d)"),	479	slog (L_WARN, _("(%s): received corrupted packet type %d (src %d, dst %d)."),
223	(const char *)rsi, pkt->typ (), pkt->src (), pkt->dst ());	480	(const char *)rsi, pkt->typ (), pkt->src (), pkt->dst ());
		481	else if (dst > conns.size ())
		482	slog (L_WARN, _("(%s): received corrupted packet type %d (src %d, dst %d)."),
		483	(const char *)rsi, pkt->typ (), pkt->src (), pkt->dst ());
224	else	484	else
225	{	485	{
226	connection *c = conns[src - 1];	486	connection *c = conns[src - 1];
227		487
228	if (dst == 0 && !THISNODE->routerprio)	488	if (dst == 0)
229	slog (L_WARN, _("%s(%s): received broadcast, but we are no router"),	489	slog (L_WARN, _("%s(%s): received broadcast (protocol violation)."),
230	c->conf->nodename, (const char *)rsi);	490	c->conf->nodename, (const char *)rsi);
231	else if (dst != 0 && dst != THISNODE->id)	491	else if (dst != THISNODE->id)
232	// FORWARDING NEEDED ;)	492	{
		493	if (THISNODE->routerprio)
		494	// the tos setting gets lost here. who cares.
		495	conns[dst - 1]->inject_vpn_packet (pkt);
		496	else
233	slog (L_WARN,	497	slog (L_WARN,
234	_("received frame for node %d ('%s') from %s, but this is node %d ('%s')"),	498	_("%s(%s): request to forward packet to %s, but we are no router (config mismatch?)."),
		499	c->conf->nodename, (const char *)rsi,
235	dst, conns[dst - 1]->conf->nodename,	500	conns[dst - 1]->conf->nodename);
236	(const char *)rsi,	501	}
237	THISNODE->id, THISNODE->nodename);
238	else	502	else
239	c->recv_vpn_packet (pkt, rsi);	503	c->recv_vpn_packet (pkt, rsi);
240	}	504	}
241	}	505	}
242		506
243	void	507	bool
244	vpn::udpv4_ev (int fd, short revents)	508	vpn::send_vpn_packet (vpn_packet *pkt, const sockinfo &si, int tos)
245	{	509	{
246	if (revents & (POLLIN \| POLLERR))	510	switch (si.prot)
		511	{
		512	case PROT_IPv4:
		513	return send_ipv4_packet (pkt, si, tos);
		514
		515	case PROT_UDPv4:
		516	return send_udpv4_packet (pkt, si, tos);
		517
		518	#if ENABLE_TCP
		519	case PROT_TCPv4:
		520	return send_tcpv4_packet (pkt, si, tos);
		521	#endif
		522	#if ENABLE_ICMP
		523	case PROT_ICMPv4:
		524	return send_icmpv4_packet (pkt, si, tos);
		525	#endif
		526	#if ENABLE_DNS
		527	case PROT_DNSv4:
		528	return send_dnsv4_packet (pkt, si, tos);
		529	#endif
		530	default:
		531	slog (L_CRIT, _("%s: FATAL: trying to send packet with unsupported protocol."), (const char *)si);
		532	}
		533
		534	return false;
		535	}
		536
		537	inline void
		538	vpn::ipv4_ev (ev::io &w, int revents)
		539	{
		540	if (revents & EV_READ)
247	{	541	{
248	vpn_packet *pkt = new vpn_packet;	542	vpn_packet *pkt = new vpn_packet;
249	struct sockaddr_in sa;	543	struct sockaddr_in sa;
250	socklen_t sa_len = sizeof (sa);	544	socklen_t sa_len = sizeof (sa);
251	int len;	545	int len;
252		546
253	len = recvfrom (fd, &((pkt)[0]), MAXSIZE, 0, (sockaddr )&sa, &sa_len);	547	len = recvfrom (w.fd, &((pkt)[0]), MAXSIZE, 0, (sockaddr )&sa, &sa_len);
254		548
255	sockinfo si(sa);	549	sockinfo si(sa, PROT_IPv4);
256		550
257	if (len > 0)	551	if (len > 0)
258	{	552	{
259	pkt->len = len;	553	pkt->len = len;
260		554
		555	// raw sockets deliver the ipv4 header, but don't expect it on sends
		556	pkt->skip_hdr (IP_OVERHEAD);
		557
261	recv_vpn_packet (pkt, si);	558	recv_vpn_packet (pkt, si);
262	}	559	}
263	else	560	else
264	{	561	{
265	// probably ECONNRESET or somesuch	562	// probably ECONNRESET or somesuch
266	slog (L_DEBUG, _("%s: %s"), (const char *)si, strerror (errno));	563	slog (L_DEBUG, _("%s: %s."), (const char *)si, strerror (errno));
267	}	564	}
268		565
269	delete pkt;	566	delete pkt;
270	}	567	}
271	else if (revents & POLLHUP)
272	{
273	// this cannot ;) happen on udp sockets
274	slog (L_ERR, _("FATAL: POLLHUP on udp v4 fd, terminating."));
275	exit (1);
276	}
277	else	568	else
278	{	569	{
279	slog (L_ERR,	570	slog (L_ERR,
280	_("FATAL: unknown revents %08x in socket, terminating\n"),	571	_("FATAL: unknown revents %08x in socket, exiting.\n"),
281	revents);	572	revents);
282	exit (1);	573	exit (EXIT_FAILURE);
283	}	574	}
284	}	575	}
285		576
286	void	577	#if ENABLE_ICMP
287	vpn::ipv4_ev (int fd, short revents)	578	inline void
		579	vpn::icmpv4_ev (ev::io &w, int revents)
288	{	580	{
289	if (revents & (POLLIN \| POLLERR))	581	if (revents & EV_READ)
290	{	582	{
291	vpn_packet *pkt = new vpn_packet;	583	vpn_packet *pkt = new vpn_packet;
292	struct sockaddr_in sa;	584	struct sockaddr_in sa;
293	socklen_t sa_len = sizeof (sa);	585	socklen_t sa_len = sizeof (sa);
294	int len;	586	int len;
295		587
296	len = recvfrom (fd, &((pkt)[0]), MAXSIZE, 0, (sockaddr )&sa, &sa_len);	588	len = recvfrom (w.fd, &((pkt)[0]), MAXSIZE, 0, (sockaddr )&sa, &sa_len);
297		589
298	sockinfo si(sa, PROT_IPv4);	590	sockinfo si(sa, PROT_ICMPv4);
299		591
300	if (len > 0)	592	if (len > 0)
301	{	593	{
302	pkt->len = len;	594	pkt->len = len;
303		595
		596	icmp_header hdr = (icmp_header )&((*pkt)[IP_OVERHEAD]);
		597
		598	if (hdr->type == ::conf.icmp_type
		599	&& hdr->code == 255)
		600	{
304	// raw sockets deliver the ipv4, but don't expect it on sends	601	// raw sockets deliver the ipv4, but don't expect it on sends
305	// this is slow, but...	602	// this is slow, but...
306	pkt->skip_hdr (IP_OVERHEAD);	603	pkt->skip_hdr (ICMP_OVERHEAD);
307		604
308	recv_vpn_packet (pkt, si);	605	recv_vpn_packet (pkt, si);
		606	}
309	}	607	}
310	else	608	else
311	{	609	{
312	// probably ECONNRESET or somesuch	610	// probably ECONNRESET or somesuch
313	slog (L_DEBUG, _("%s: %s"), (const char *)si, strerror (errno));	611	slog (L_DEBUG, _("%s: %s."), (const char *)si, strerror (errno));
314	}	612	}
315		613
316	delete pkt;	614	delete pkt;
317	}	615	}
318	else if (revents & POLLHUP)
319	{
320	// this cannot ;) happen on udp sockets
321	slog (L_ERR, _("FATAL: POLLHUP on ipv4 fd, terminating."));
322	exit (1);
323	}
324	else	616	else
325	{	617	{
326	slog (L_ERR,	618	slog (L_ERR,
327	_("FATAL: unknown revents %08x in socket, terminating\n"),	619	_("FATAL: unknown revents %08x in socket, exiting.\n"),
328	revents);	620	revents);
329	exit (1);	621	exit (EXIT_FAILURE);
330	}
331	}
332
333	#if ENABLE_TCP
334
335	struct tcp_info {
336	int fd;
337	bool ok;
338	io_watcher r;
339
340	tcp_info (vpn *v)
341	: r(v, &vpn::tcpv4_ev)
342	{	622	}
343	fd = -1;	623	}
		624	#endif
		625
		626	inline void
		627	vpn::udpv4_ev (ev::io &w, int revents)
		628	{
		629	if (revents & EV_READ)
344	}	630	{
345		631	vpn_packet *pkt = new vpn_packet;
346	~tcp_info () { close (fd); }
347	};
348
349	typedef map<sockinfo, tcp_info *> tcp_si_map;
350	typedef map<int, tcp_info *> tcp_fd_map; // unneecssary if iom would be cooler
351	static tcp_si_map tcp_si;
352	static tcp_fd_map tcp_fd;
353
354	void
355	vpn::send_tcpv4_packet (vpn_packet *pkt, const sockinfo &si, int tos)
356	{
357	tcp_si_map::iterator info = tcp_si.find (si);
358
359	if (info == tcp_si.end ())
360	{
361	// woaw, the first lost packet ;)
362	tcp_info *i = new tcp_info (this);
363
364	i->ok = false;
365	i->fd = socket (PF_INET, SOCK_STREAM, IPPROTO_TCP);
366
367	if (i->fd >= 0)
368	{
369	fcntl (i->fd, F_SETFL, O_NONBLOCK);
370
371	if (connect (i->fd, si.sav4 (), si.salenv4 ()) >= 0
372	\|\| errno == EINPROGRESS)
373	{
374	tcp_si.insert (tcp_si_map::value_type (si, i));
375	tcp_fd.insert (tcp_fd_map::value_type (i->fd, i));
376	return;
377	}
378
379	delete i;
380	}
381	}
382	else
383	{
384	tcp_info *i = info->second;
385
386	if (i->ok)
387	{
388	setsockopt (i->fd, SOL_IP, IP_TOS, &tos, sizeof tos);
389
390	if (write (i->fd, (void *)pkt, pkt->len + sizeof (u32)) != pkt->len + sizeof (u32))
391	{
392	// error, close socket, forget it and retry immediately
393	tcp_si.erase (info);
394	tcp_fd.erase (i->fd);
395	delete i;
396
397	// tail recursion is... better than goto(?)
398	send_tcpv4_packet (pkt, si, tos);
399	}
400	}
401	}
402
403	#if 0
404	setsockopt (udpv4_fd, SOL_IP, IP_TOS, &tos, sizeof tos);
405	sendto (udpv4_fd, &((*pkt)[0]), pkt->len, 0, si.sav4 (), si.salenv4 ());
406	#endif
407	}
408
409	void
410	vpn::tcpv4_accept (int fd, short revents)
411	{
412	if (revents & (POLLIN \| POLLERR))
413	{
414	struct sockaddr_in sa;	632	struct sockaddr_in sa;
415	socklen_t sa_len = sizeof (sa);	633	socklen_t sa_len = sizeof (sa);
416	int len;	634	int len;
417		635
418	fd = accept (fd, (sockaddr *)&sa, &sa_len);	636	len = recvfrom (w.fd, &((pkt)[0]), MAXSIZE, 0, (sockaddr )&sa, &sa_len);
419		637
420	if (fd >= 0)
421	{
422	fcntl (fd, F_SETFL, O_NONBLOCK);
423
424	sockinfo si(sa, PROT_TCPv4);	638	sockinfo si(sa, PROT_UDPv4);
425	tcp_info *i = new tcp_info (this);
426		639
427	i->fd = fd;	640	if (len > 0)
428	i->ok = true;
429	i->r.start (fd, POLLIN);
430
431	tcp_si.insert (tcp_si_map::value_type (si, i));
432	tcp_fd.insert (tcp_fd_map::value_type (fd, i));
433	}	641	{
434	}	642	pkt->len = len;
435	}
436		643
437	void	644	recv_vpn_packet (pkt, si);
438	vpn::tcpv4_ev (int fd, short revents)
439	{
440	if (revents & (POLLIN \| POLLERR))
441	{
442	tcp_fd_map::iterator info = tcp_fd.find (fd);
443
444	if (info != tcp_fd.end ())
445	{	645	}
446	tcp_info *i = info->second;	646	else
447
448	if (!i->ok) // not yet established
449	{
450	i->ok = true;
451	fcntl (i->fd, F_SETFL, 0);
452	}
453
454	u32 len;
455
456	if (sizeof (len) == read (fd, &len, sizeof (len)))
457	{
458	slog (L_ERR, "%d bytes received\n", len);
459	}
460
461	//tcp_si.erase (i);
462	tcp_fd.erase (fd);
463	delete i;
464	}	647	{
		648	// probably ECONNRESET or somesuch
		649	slog (L_DEBUG, _("%s: fd %d, %s."), (const char *)si, w.fd, strerror (errno));
		650	}
		651
		652	delete pkt;
		653	}
		654	else
465	}	655	{
		656	slog (L_ERR,
		657	_("FATAL: unknown revents %08x in socket, exiting.\n"),
		658	revents);
		659	exit (EXIT_FAILURE);
		660	}
466	}	661	}
467		662
468	#endif	663	inline void
469		664	vpn::tap_ev (ev::io &w, int revents)
470	void
471	vpn::tap_ev (int fd, short revents)
472	{	665	{
473	if (revents & POLLIN)	666	if (revents & EV_READ)
474	{	667	{
475	/* process data */	668	/* process data */
476	tap_packet *pkt;	669	tap_packet *pkt;
477		670
478	pkt = tap->recv ();	671	pkt = tap->recv ();
479		672
		673	if (!pkt)
		674	return;
		675
		676	if (pkt->len > 14)
		677	{
480	int dst = mac2id (pkt->dst);	678	int dst = mac2id (pkt->dst);
481	int src = mac2id (pkt->src);	679	int src = mac2id (pkt->src);
482		680
483	if (src != THISNODE->id)	681	if (src != THISNODE->id)
484	{
485	slog (L_ERR, _("FATAL: tap packet not originating on current node received, terminating."));
486	exit (1);
487	}
488
489	if (dst == THISNODE->id)
490	{
491	slog (L_ERR, _("FATAL: tap packet destined for current node received, terminating."));
492	exit (1);
493	}
494
495	if (dst > conns.size ())
496	slog (L_ERR, _("tap packet for unknown node %d received, ignoring."), dst);
497	else
498	{
499	if (dst)
500	{	682	{
501	// unicast	683	slog (L_ERR, _("FATAL: tap packet not originating on current node received (if-up script not working properly?), exiting."));
502	if (dst != THISNODE->id)	684	exit (EXIT_FAILURE);
503	conns[dst - 1]->inject_data_packet (pkt);
504	}	685	}
		686
		687	if (dst == THISNODE->id)
		688	{
		689	slog (L_ERR, _("FATAL: tap packet destined for current node received, exiting."));
		690	exit (EXIT_FAILURE);
		691	}
		692
		693	if (dst > conns.size ())
		694	slog (L_ERR, _("tap packet for unknown node %d received, ignoring."), dst);
505	else	695	else
506	{
507	// broadcast, first check router, then self, then english
508	connection *router = find_router ();
509
510	if (router)
511	router->inject_data_packet (pkt, true);	696	inject_data_packet (pkt, dst);
512	else
513	for (conns_vector::iterator c = conns.begin (); c != conns.end (); ++c)
514	if ((*c)->conf != THISNODE)
515	(*c)->inject_data_packet (pkt);
516	}
517	}	697	}
518		698
519	delete pkt;	699	delete pkt;
520	}	700	}
521	else if (revents & (POLLHUP \| POLLERR))
522	{
523	slog (L_ERR, _("FATAL: POLLHUP or POLLERR on network device fd, terminating."));
524	exit (1);
525	}
526	else	701	else
527	abort ();	702	abort ();
528	}	703	}
529		704
530	void	705	inline void
531	vpn::event_cb (tstamp &ts)	706	vpn::event_cb (ev::timer &w, int)
532	{	707	{
533	if (events)	708	if (events)
534	{	709	{
535	if (events & EVENT_SHUTDOWN)	710	if (events & EVENT_SHUTDOWN)
536	{	711	{
537	slog (L_INFO, _("preparing shutdown..."));	712	slog (L_INFO, _("preparing shutdown..."));
538		713
539	shutdown_all ();	714	shutdown_all ();
540
541	remove_pid (pidfilename);	715	remove_pid (conf.pidfilename);
542
543	slog (L_INFO, _("terminating"));	716	slog (L_INFO, _("exiting."));
544		717	exit (EXIT_SUCCESS);
545	exit (0);
546	}	718	}
547		719
548	if (events & EVENT_RECONNECT)	720	if (events & EVENT_RECONNECT)
549	{	721	{
550	slog (L_INFO, _("forced reconnect"));	722	slog (L_INFO, _("forced reconnect."));
551		723
552	reconnect_all ();	724	reconnect_all ();
553	}	725	}
554		726
555	events = 0;	727	events = 0;
556	}	728	}
557
558	ts = TSTAMP_CANCEL;
559	}	729	}
560		730
561	void	731	void
562	vpn::shutdown_all ()	732	vpn::shutdown_all ()
563	{	733	{
573		743
574	conns.clear ();	744	conns.clear ();
575		745
576	connection_init ();	746	connection_init ();
577		747
578	for (configuration::node_vector::iterator i = conf.nodes.begin ();	748	for (configuration::node_vector::iterator i = conf.nodes.begin (); i != conf.nodes.end (); ++i)
579	i != conf.nodes.end (); ++i)	749	conns.push_back (new connection (this, *i));
580	{
581	connection *conn = new connection (this);
582		750
583	conn->conf = *i;	751	for (conns_vector::iterator c = conns.begin (); c != conns.end (); ++c)
584	conns.push_back (conn);
585
586	conn->establish_connection ();	752	(*c)->establish_connection ();
587	}
588	}	753	}
589		754
590	connection *vpn::find_router ()	755	bool vpn::can_direct (conf_node src, conf_node dst) const
591	{	756	{
592	u32 prio = 0;	757	return src != dst
		758	&& src->may_direct (dst)
		759	&& dst->may_direct (src)
		760	&& (((src->protocols & dst->protocols) && src->connectmode == conf_node::C_ALWAYS)
		761	\|\| (src->protocols & dst->connectable_protocols ()));
		762	}
		763
		764	// only works for indirect and routed connections: find a router
		765	// from THISNODE to dst
		766	connection vpn::find_router_for (const connection dst)
		767	{
593	connection *router = 0;	768	connection *router = 0;
594		769
		770	// first try to find a router with a direct connection
		771	{
		772	u32 prio = 1;
		773
		774	for (conns_vector::iterator i = conns.begin (); i != conns.end (); ++i)
		775	{
		776	connection c = i;
		777
		778	if (c->conf->routerprio > prio
		779	&& c->conf != THISNODE
		780	&& c != dst
		781	&& can_direct (c->conf, dst->conf))
		782	{
		783	if (c->ictx && c->octx)
		784	{
		785	prio = c->conf->routerprio;
		786	router = c;
		787	}
		788	else
		789	c->establish_connection ();
		790	}
		791	}
		792	}
		793
		794	if (router)
		795	return router;
		796
		797	// second try find the router with the highest priority higher than ours
		798	{
		799	u32 prio = 1;
		800
		801	for (conns_vector::iterator i = conns.begin (); i != conns.end (); ++i)
		802	{
		803	connection c = i;
		804
		805	if (c->conf->routerprio > prio
		806	&& c->conf->routerprio > THISNODE->routerprio
		807	&& c != dst
		808	&& c->conf != THISNODE)
		809	{
		810	if (c->ictx && c->octx)
		811	{
		812	prio = c->conf->routerprio;
		813	router = c;
		814	}
		815	else
		816	c->establish_connection ();
		817	}
		818	}
		819	}
		820	return router;
		821	}
		822
		823	void vpn::connection_established (connection *c)
		824	{
595	for (conns_vector::iterator i = conns.begin (); i != conns.end (); ++i)	825	for (conns_vector::iterator i = conns.begin (); i != conns.end (); ++i)
596	{	826	{
597	connection c = i;	827	connection o = i;
598		828
599	if (c->conf->routerprio > prio	829	if (!o->is_direct
600	&& c->connectmode == conf_node::C_ALWAYS	830	&& o->si.valid ()
601	&& c->conf != THISNODE	831	&& c->si != o->si
602	&& c->ictx && c->octx)	832	&& c == find_router_for (o))
603	{
604	prio = c->conf->routerprio;
605	router = c;
606	}	833	{
		834	slog (L_DEBUG, _("%s: can now route packets via %s, re-keying connection."),
		835	o->conf->nodename, c->conf->nodename);
		836	o->rekey ();
		837	}
607	}	838	}
608
609	return router;
610	}	839	}
611		840
612	void vpn::connect_request (int id)	841	void vpn::send_connect_request (connection *c)
613	{	842	{
614	connection *c = find_router ();	843	connection *r = find_router_for (c);
615		844
616	if (c)	845	if (r)
		846	{
		847	slog (L_TRACE, _("%s: no way to connect, sending mediated connection request via %s."),
		848	c->conf->nodename, r->conf->nodename);
617	c->connect_request (id);	849	r->send_connect_request (c->conf->id);
618	//else // does not work, because all others must connect to the same router	850	}
619	// // no router found, aggressively connect to all routers	851	else
620	// for (conns_vector::iterator i = conns.begin (); i != conns.end (); ++i)	852	slog (L_DEBUG, _("%s: no way to connect and no router found: unable to connect."),
621	// if ((*i)->conf->routerprio)	853	c->conf->nodename);
622	// (*i)->establish_connection ();
623	}	854	}
624		855
625	void	856	void
626	connection::dump_status ()	857	connection::dump_status ()
627	{	858	{
628	slog (L_NOTICE, _("node %s (id %d)"), conf->nodename, conf->id);	859	slog (L_NOTICE, _("node %s (id %d)"), conf->nodename, conf->id);
629	slog (L_NOTICE, _(" connectmode %d (%d) / sockaddr %s / minor %d"),	860	slog (L_NOTICE, _(" connectmode %d (%d) / sockaddr %s / minor %d"),
630	connectmode, conf->connectmode, (const char *)si, (int)prot_minor);	861	connectmode, conf->connectmode, (const char *)si, (int)prot_minor);
631	slog (L_NOTICE, _(" ictx/octx %08lx/%08lx / oseqno %d / retry_cnt %d"),	862	slog (L_NOTICE, _(" ictx/octx %08lx/%08lx / oseqno %d / retry_cnt %d"),
632	(long)ictx, (long)octx, (int)oseqno, (int)retry_cnt);	863	(long)ictx, (long)octx, (int)oseqno, (int)retry_cnt);
633	slog (L_NOTICE, _(" establish_conn %ld / rekey %ld / keepalive %ld"),
634	(long)(establish_connection.at), (long)(rekey.at), (long)(keepalive.at));
635	}	864	}
636		865
637	void	866	void
638	vpn::dump_status ()	867	vpn::dump_status ()
639	{	868	{
640	slog (L_NOTICE, _("BEGIN status dump (%ld)"), (long)NOW);	869	slog (L_NOTICE, _("BEGIN status dump (%ld)"), (long)ev_now ());
641		870
642	for (conns_vector::iterator c = conns.begin (); c != conns.end (); ++c)	871	for (conns_vector::iterator c = conns.begin (); c != conns.end (); ++c)
643	(*c)->dump_status ();	872	(*c)->dump_status ();
644		873
645	slog (L_NOTICE, _("END status dump"));	874	slog (L_NOTICE, _("END status dump"));
646	}	875	}
647		876
648	vpn::vpn (void)	877	vpn::vpn (void)
649	: event(this, &vpn::event_cb)	878	{
		879	event .set<vpn, &vpn::event_cb > (this);
650	, udpv4_ev_watcher(this, &vpn::udpv4_ev)	880	udpv4_ev_watcher .set<vpn, &vpn::udpv4_ev > (this);
651	, ipv4_ev_watcher (this, &vpn::ipv4_ev)	881	ipv4_ev_watcher .set<vpn, &vpn::ipv4_ev > (this);
652	, tap_ev_watcher (this, &vpn::tap_ev)
653	#if ENABLE_TCP	882	#if ENABLE_TCP
654	, tcpv4_accept_watcher(this, &vpn::tcpv4_accept)	883	tcpv4_ev_watcher .set<vpn, &vpn::tcpv4_ev > (this);
655	#endif	884	#endif
656	{	885	#if ENABLE_ICMP
		886	icmpv4_ev_watcher.set<vpn, &vpn::icmpv4_ev> (this);
		887	#endif
		888	#if ENABLE_DNS
		889	dnsv4_ev_watcher .set<vpn, &vpn::dnsv4_ev > (this);
		890	#endif
		891	tap_ev_watcher .set<vpn, &vpn::tap_ev > (this);
657	}	892	}
658		893
659	vpn::~vpn ()	894	vpn::~vpn ()
660	{	895	{
661	}	896	}

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Comparing gvpe/src/vpn.C (file contents): Revision 1.2 by pcg, Wed Apr 2 05:15:00 2003 UTC vs. Revision 1.51 by pcg, Sun Aug 10 14:48:57 2008 UTC

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Comparing gvpe/src/vpn.C (file contents):
Revision 1.2 by pcg, Wed Apr 2 05:15:00 2003 UTC vs.
Revision 1.51 by pcg, Sun Aug 10 14:48:57 2008 UTC