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

Comparing gvpe/src/vpn.C (file contents):
Revision 1.4 by pcg, Fri Apr 4 05:26:45 2003 UTC vs.
Revision 1.56 by root, Tue Feb 8 23:11:36 2011 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;
		122	}
		123
		124	int
		125	vpn::setup_socket (u8 prot, int family, int type, int proto)
		126	{
		127	int fd = socket (family, type, proto);
		128
		129	if (fd < 0)
		130	{
		131	slog (L_ERR, _("unable to create %s socket: %s."), strprotocol (prot), strerror (errno));
		132	return fd;
		133	}
		134
		135	fcntl (fd, F_SETFL, O_NONBLOCK);
		136	fcntl (fd, F_SETFD, FD_CLOEXEC);
		137
		138	#ifdef SO_MARK
		139	if (::conf.nfmark)
		140	if (setsockopt (fd, SOL_SOCKET, SO_MARK, &::conf.nfmark, sizeof ::conf.nfmark))
		141	slog (L_WARN, _("unable to set nfmark on %s socket: %s"), strprotocol (prot), strerror (errno));
		142	#endif
		143
		144	return fd;
78	}	145	}
79		146
80	int	147	int
81	vpn::setup ()	148	vpn::setup ()
82	{	149	{
		150	int success = 0;
		151
		152	ipv4_tos = -1;
		153	ipv4_fd = -1;
		154
		155	if (THISNODE->protocols & PROT_IPv4 && ::conf.ip_proto)
		156	{
		157	ipv4_fd = setup_socket (PROT_IPv4, PF_INET, SOCK_RAW, ::conf.ip_proto);
		158
		159	if (ipv4_fd < 0)
		160	return -1;
		161
		162	#if defined(SOL_IP) && defined(IP_MTU_DISCOVER)
		163	// this I really consider a linux bug. I am neither connected
		164	// nor do I fragment myself. Linux still sets DF and doesn't
		165	// fragment for me sometimes.
		166	{
		167	int oval = IP_PMTUDISC_DONT;
		168	setsockopt (ipv4_fd, SOL_IP, IP_MTU_DISCOVER, &oval, sizeof oval);
		169	}
		170	#endif
		171
		172	sockinfo si (THISNODE, PROT_IPv4);
		173
		174	if (bind (ipv4_fd, si.sav4 (), si.salenv4 ()))
		175	{
		176	slog (L_ERR, _("can't bind ipv4 socket on %s: %s, exiting."), (const char *)si, strerror (errno));
		177	return -1;
		178	}
		179
		180	ipv4_ev_watcher.start (ipv4_fd, EV_READ);
		181	++success;
		182	}
		183	else
		184	THISNODE->protocols &= ~PROT_IPv4;
		185
		186	udpv4_tos = -1;
83	udpv4_fd = -1;	187	udpv4_fd = -1;
84		188
85	if (THISNODE->protocols & PROT_UDPv4)	189	if (THISNODE->protocols & PROT_UDPv4 && THISNODE->udp_port)
86	{	190	{
87	udpv4_fd = socket (PF_INET, SOCK_DGRAM, IPPROTO_UDP);	191	udpv4_fd = setup_socket (PROT_UDPv4, PF_INET, SOCK_DGRAM, IPPROTO_UDP);
88		192
89	if (udpv4_fd < 0)	193	if (udpv4_fd < 0)
90	return -1;	194	return -1;
91		195
92	// standard daemon practise...	196	// standard daemon practise...
93	{	197	{
94	int oval = 1;	198	int oval = 1;
95	setsockopt (udpv4_fd, SOL_SOCKET, SO_REUSEADDR, &oval, sizeof oval);	199	setsockopt (udpv4_fd, SOL_SOCKET, SO_REUSEADDR, &oval, sizeof oval);
96	}	200	}
97		201
98	sockinfo si (THISNODE, PROT_UDPv4);	202	#if defined(SOL_IP) && defined(IP_MTU_DISCOVER)
99
100	if (bind (udpv4_fd, si.sav4 (), si.salenv4 ()))
101	{
102	slog (L_ERR, _("can't bind udpv4 on %s: %s"), (const char *)si, strerror (errno));
103	exit (1);
104	}
105
106	#ifdef IP_MTU_DISCOVER
107	// this I really consider a linux bug. I am neither connected	203	// this I really consider a linux bug. I am neither connected
108	// nor do I fragment myself. Linux still sets DF and doesn't	204	// nor do I fragment myself. Linux still sets DF and doesn't
109	// fragment for me sometimes.	205	// fragment for me sometimes.
110	{	206	{
111	int oval = IP_PMTUDISC_DONT;	207	int oval = IP_PMTUDISC_DONT;
112	setsockopt (udpv4_fd, SOL_IP, IP_MTU_DISCOVER, &oval, sizeof oval);	208	setsockopt (udpv4_fd, SOL_IP, IP_MTU_DISCOVER, &oval, sizeof oval);
113	}	209	}
114	#endif	210	#endif
115		211
		212	sockinfo si (THISNODE, PROT_UDPv4);
		213
		214	if (bind (udpv4_fd, si.sav4 (), si.salenv4 ()))
		215	{
		216	slog (L_ERR, _("can't bind udpv4 on %s: %s, exiting."), (const char *)si, strerror (errno));
		217	return -1;
		218	}
		219
116	udpv4_ev_watcher.start (udpv4_fd, POLLIN);	220	udpv4_ev_watcher.start (udpv4_fd, EV_READ);
		221	++success;
117	}	222	}
		223	else
		224	THISNODE->protocols &= ~PROT_UDPv4;
118		225
		226	icmpv4_tos = -1;
119	ipv4_fd = -1;	227	icmpv4_fd = -1;
		228
		229	#if ENABLE_ICMP
120	if (THISNODE->protocols & PROT_IPv4)	230	if (THISNODE->protocols & PROT_ICMPv4)
121	{	231	{
122	ipv4_fd = socket (PF_INET, SOCK_RAW, ::conf.ip_proto);	232	icmpv4_fd = setup_socket (PROT_ICMPv4, PF_INET, SOCK_RAW, IPPROTO_ICMP);
123		233
124	if (ipv4_fd < 0)	234	if (icmpv4_fd < 0)
125	return -1;	235	return -1;
126		236
127	sockinfo si (THISNODE, PROT_IPv4);	237	#ifdef ICMP_FILTER
128
129	if (bind (ipv4_fd, si.sav4 (), si.salenv4 ()))
130	{	238	{
131	slog (L_ERR, _("can't bind ipv4 socket on %s: %s"), (const char *)si, strerror (errno));	239	icmp_filter oval;
132	exit (1);	240	oval.data = 0xffffffff;
		241	if (::conf.icmp_type < 32)
		242	oval.data &= ~(1 << ::conf.icmp_type);
		243
		244	setsockopt (icmpv4_fd, SOL_RAW, ICMP_FILTER, &oval, sizeof oval);
133	}	245	}
		246	#endif
134		247
135	#ifdef IP_MTU_DISCOVER	248	#if defined(SOL_IP) && defined(IP_MTU_DISCOVER)
136	// this I really consider a linux bug. I am neither connected	249	// this I really consider a linux bug. I am neither connected
137	// nor do I fragment myself. Linux still sets DF and doesn't	250	// nor do I fragment myself. Linux still sets DF and doesn't
138	// fragment for me sometimes.	251	// fragment for me sometimes.
139	{	252	{
140	int oval = IP_PMTUDISC_DONT;	253	int oval = IP_PMTUDISC_DONT;
141	setsockopt (ipv4_fd, SOL_IP, IP_MTU_DISCOVER, &oval, sizeof oval);	254	setsockopt (icmpv4_fd, SOL_IP, IP_MTU_DISCOVER, &oval, sizeof oval);
142	}	255	}
143	#endif	256	#endif
144		257
		258	sockinfo si (THISNODE, PROT_ICMPv4);
		259
		260	if (bind (icmpv4_fd, si.sav4 (), si.salenv4 ()))
		261	{
		262	slog (L_ERR, _("can't bind icmpv4 on %s: %s, exiting."), (const char *)si, strerror (errno));
		263	return -1;
		264	}
		265
145	ipv4_ev_watcher.start (ipv4_fd, POLLIN);	266	icmpv4_ev_watcher.start (icmpv4_fd, EV_READ);
		267	++success;
146	}	268	}
		269	#endif
		270
		271	tcpv4_fd = -1;
147		272
148	#if ENABLE_TCP	273	#if ENABLE_TCP
149	if (THISNODE->protocols & PROT_TCPv4)	274	if (THISNODE->protocols & PROT_TCPv4 && THISNODE->tcp_port)
150	{	275	{
151	tcpv4_fd = socket (PF_INET, SOCK_STREAM, IPPROTO_TCP);	276	tcpv4_fd = setup_socket (PROT_TCPv4, PF_INET, SOCK_STREAM, IPPROTO_TCP);
152		277
153	if (tcpv4_fd < 0)	278	if (tcpv4_fd < 0)
154	return -1;	279	return -1;
155		280
156	// standard daemon practise...	281	// standard daemon practise...
161		286
162	sockinfo si (THISNODE, PROT_TCPv4);	287	sockinfo si (THISNODE, PROT_TCPv4);
163		288
164	if (bind (tcpv4_fd, si.sav4 (), si.salenv4 ()))	289	if (bind (tcpv4_fd, si.sav4 (), si.salenv4 ()))
165	{	290	{
166	slog (L_ERR, _("can't bind tcpv4 on %s: %s"), (const char *)si, strerror (errno));	291	slog (L_ERR, _("can't bind tcpv4 on %s: %s, exiting."), (const char *)si, strerror (errno));
167	exit (1);	292	return -1;
168	}	293	}
169		294
170	if (listen (tcpv4_fd, 5))	295	if (listen (tcpv4_fd, 5))
171	{	296	{
172	slog (L_ERR, _("can't listen tcpv4 on %s: %s"), (const char *)si, strerror (errno));	297	slog (L_ERR, _("can't listen tcpv4 on %s: %s, exiting."), (const char *)si, strerror (errno));
173	exit (1);	298	return -1;
		299	}
		300
		301	tcpv4_ev_watcher.start (tcpv4_fd, EV_READ);
		302	++success;
		303	}
		304	else
		305	THISNODE->protocols &= ~PROT_TCPv4;
		306	#endif
		307
		308	dnsv4_tos = -1;
		309	dnsv4_fd = -1;
		310
		311	#if ENABLE_DNS
		312	if (THISNODE->protocols & PROT_DNSv4)
		313	{
		314	dns_forwarder.set (::conf.dns_forw_host, ::conf.dns_forw_port, PROT_DNSv4);
		315
		316	dnsv4_fd = setup_socket (PROT_DNSv4, PF_INET, SOCK_DGRAM, IPPROTO_UDP);
		317
		318	if (dnsv4_fd < 0)
		319	return -1;
		320
		321	# if defined(SOL_IP) && defined(IP_MTU_DISCOVER)
		322	// this I really consider a linux bug. I am neither connected
		323	// nor do I fragment myself. Linux still sets DF and doesn't
		324	// fragment for me sometimes.
		325	{
		326	int oval = IP_PMTUDISC_DONT;
		327	setsockopt (dnsv4_fd, SOL_IP, IP_MTU_DISCOVER, &oval, sizeof oval);
174	}	328	}
175
176	tcpv4_ev_watcher.start (tcpv4_fd, POLLIN);
177	}
178	#endif	329	# endif
		330
		331	// standard daemon practise...
		332	{
		333	int oval = 1;
		334	setsockopt (dnsv4_fd, SOL_SOCKET, SO_REUSEADDR, &oval, sizeof oval);
		335	}
		336
		337	sockinfo si (THISNODE->dns_hostname,
		338	THISNODE->dns_hostname ? THISNODE->dns_port : 0,
		339	PROT_DNSv4);
		340
		341	if (bind (dnsv4_fd, si.sav4 (), si.salenv4 ()))
		342	{
		343	slog (L_ERR, _("can't bind dnsv4 on %s: %s, exiting."), (const char *)si, strerror (errno));
		344	return -1;
		345	}
		346
		347	dnsv4_ev_watcher.start (dnsv4_fd, EV_READ);
		348	++success;
		349	}
		350	#endif
		351
		352	/////////////////////////////////////////////////////////////////////////////
		353
		354	if (!success)
		355	{
		356	slog (L_ERR, _("no protocols enabled."));
		357	return -1;
		358	}
		359
		360	reconnect_all ();
		361
		362	/////////////////////////////////////////////////////////////////////////////
179		363
180	tap = new tap_device ();	364	tap = new tap_device ();
181	if (!tap) //D this, of course, never catches	365	if (!tap) //D this, of course, never catches
182	{	366	{
183	slog (L_ERR, _("cannot create network interface '%s'"), conf.ifname);	367	slog (L_ERR, _("cannot create network interface '%s'."), conf.ifname);
184	exit (1);	368	return -1;
185	}	369	}
186		370
187	run_script (run_script_cb (this, &vpn::script_if_up), true);	371	fcntl (tap->fd, F_SETFD, FD_CLOEXEC);
188		372
		373	run_script_cb cb;
		374	cb.set<vpn, &vpn::script_if_init> (this);
		375
		376	if (tap->if_up () &&
		377	!run_script (cb, true))
		378	{
		379	slog (L_ERR, _("interface initialization command '%s' failed."),
		380	tap->if_up ());
		381	return -1;
		382	}
		383
		384	cb.set<vpn, &vpn::script_if_up> (this);
		385	if (!run_script (cb, true))
		386	{
		387	slog (L_ERR, _("if-up command execution failed."));
		388	return -1;
		389	}
		390
189	tap_ev_watcher.start (tap->fd, POLLIN);	391	tap_ev_watcher.start (tap->fd, EV_READ);
190
191	reconnect_all ();
192		392
193	return 0;	393	return 0;
194	}	394	}
195		395
		396	bool
		397	vpn::send_ipv4_packet (vpn_packet *pkt, const sockinfo &si, int tos)
		398	{
		399	set_tos (ipv4_fd, ipv4_tos, tos);
		400	sendto (ipv4_fd, &((*pkt)[0]), pkt->len, 0, si.sav4 (), si.salenv4 ());
		401
		402	return true;
		403	}
		404
		405	static u16
		406	ipv4_checksum (u16 *data, unsigned int len)
		407	{
		408	// use 32 bit accumulator and fold back carry bits at the end
		409	u32 sum = 0;
		410
		411	while (len > 1)
		412	{
		413	sum += *data++;
		414	len -= 2;
		415	}
		416
		417	// odd byte left?
		418	if (len)
		419	sum += (u8 )data;
		420
		421	// add back carry bits
		422	sum = (sum >> 16) + (sum & 0xffff); // lo += hi
		423	sum += (sum >> 16); // carry
		424
		425	return ~sum;
		426	}
		427
		428	#if ENABLE_ICMP
		429	bool
		430	vpn::send_icmpv4_packet (vpn_packet *pkt, const sockinfo &si, int tos)
		431	{
		432	pkt->unshift_hdr (4);
		433
		434	icmp_header hdr = (icmp_header )&((*pkt)[0]);
		435	hdr->type = ::conf.icmp_type;
		436	hdr->code = 255;
		437	hdr->checksum = 0;
		438	hdr->checksum = ipv4_checksum ((u16 *)hdr, pkt->len);
		439
		440	set_tos (icmpv4_fd, icmpv4_tos, tos);
		441	sendto (icmpv4_fd, &((*pkt)[0]), pkt->len, 0, si.sav4 (), si.salenv4 ());
		442
		443	return true;
		444	}
		445	#endif
		446
		447	bool
		448	vpn::send_udpv4_packet (vpn_packet *pkt, const sockinfo &si, int tos)
		449	{
		450	set_tos (udpv4_fd, udpv4_tos, tos);
		451	sendto (udpv4_fd, &((*pkt)[0]), pkt->len, 0, si.sav4 (), si.salenv4 ());
		452
		453	return true;
		454	}
		455
196	void	456	void
197	vpn::send_ipv4_packet (vpn_packet *pkt, const sockinfo &si, int tos)	457	vpn::inject_data_packet (tap_packet *pkt, int dst)
198	{	458	{
199	setsockopt (ipv4_fd, SOL_IP, IP_TOS, &tos, sizeof tos);	459	if (dst)
200	sendto (ipv4_fd, &((*pkt)[0]), pkt->len, 0, si.sav4 (), si.salenv4 ());	460	{
201	}	461	// unicast
202		462	if (dst != THISNODE->id)
203	void	463	conns[dst - 1]->inject_data_packet (pkt);
204	vpn::send_udpv4_packet (vpn_packet *pkt, const sockinfo &si, int tos)	464	}
205	{	465	else
206	setsockopt (udpv4_fd, SOL_IP, IP_TOS, &tos, sizeof tos);	466	{
207	sendto (udpv4_fd, &((*pkt)[0]), pkt->len, 0, si.sav4 (), si.salenv4 ());	467	// broadcast, this is ugly, but due to the security policy
		468	// we have to connect to all hosts...
		469	for (conns_vector::iterator c = conns.begin (); c != conns.end (); ++c)
		470	if ((*c)->conf != THISNODE)
		471	(*c)->inject_data_packet (pkt);
		472	}
208	}	473	}
209		474
210	void	475	void
211	vpn::recv_vpn_packet (vpn_packet *pkt, const sockinfo &rsi)	476	vpn::recv_vpn_packet (vpn_packet *pkt, const sockinfo &rsi)
212	{	477	{
213	unsigned int src = pkt->src ();	478	unsigned int src = pkt->src ();
214	unsigned int dst = pkt->dst ();	479	unsigned int dst = pkt->dst ();
215		480
216	slog (L_NOISE, _("<<?/%s received possible vpn packet type %d from %d to %d, length %d"),	481	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);	482	(const char *)rsi, pkt->typ (), pkt->src (), pkt->dst (), pkt->len);
218		483
219	if (src == 0 \|\| src > conns.size ()	484	if (src == 0 \|\| src > conns.size ()
220	\|\| dst > conns.size ()	485	\|\| dst > conns.size ()
221	\|\| pkt->typ () >= vpn_packet::PT_MAX)	486	\|\| pkt->typ () >= vpn_packet::PT_MAX)
222	slog (L_WARN, _("(%s): received corrupted packet type %d (src %d, dst %d)"),	487	slog (L_WARN, _("(%s): received corrupted packet type %d (src %d, dst %d)."),
		488	(const char *)rsi, pkt->typ (), pkt->src (), pkt->dst ());
		489	else if (dst > conns.size ())
		490	slog (L_WARN, _("(%s): received corrupted packet type %d (src %d, dst %d)."),
223	(const char *)rsi, pkt->typ (), pkt->src (), pkt->dst ());	491	(const char *)rsi, pkt->typ (), pkt->src (), pkt->dst ());
224	else	492	else
225	{	493	{
226	connection *c = conns[src - 1];	494	connection *c = conns[src - 1];
227		495
228	if (dst == 0 && !THISNODE->routerprio)	496	if (dst == 0)
229	slog (L_WARN, _("%s(%s): received broadcast, but we are no router"),	497	slog (L_WARN, _("%s(%s): received broadcast (protocol violation)."),
230	c->conf->nodename, (const char *)rsi);	498	c->conf->nodename, (const char *)rsi);
231	else if (dst != 0 && dst != THISNODE->id)	499	else if (dst != THISNODE->id)
232	// FORWARDING NEEDED ;)	500	{
		501	if (THISNODE->routerprio)
		502	// the tos setting gets lost here. who cares.
		503	conns[dst - 1]->inject_vpn_packet (pkt);
		504	else
233	slog (L_WARN,	505	slog (L_WARN,
234	_("received frame for node %d ('%s') from %s, but this is node %d ('%s')"),	506	_("%s(%s): request to forward packet to %s, but we are no router (config mismatch?)."),
		507	c->conf->nodename, (const char *)rsi,
235	dst, conns[dst - 1]->conf->nodename,	508	conns[dst - 1]->conf->nodename);
236	(const char *)rsi,	509	}
237	THISNODE->id, THISNODE->nodename);
238	else	510	else
239	c->recv_vpn_packet (pkt, rsi);	511	c->recv_vpn_packet (pkt, rsi);
240	}	512	}
241	}	513	}
242		514
243	void	515	bool
244	vpn::udpv4_ev (io_watcher &w, short revents)	516	vpn::send_vpn_packet (vpn_packet *pkt, const sockinfo &si, int tos)
245	{	517	{
246	if (revents & (POLLIN \| POLLERR))	518	switch (si.prot)
		519	{
		520	case PROT_IPv4:
		521	return send_ipv4_packet (pkt, si, tos);
		522
		523	case PROT_UDPv4:
		524	return send_udpv4_packet (pkt, si, tos);
		525
		526	#if ENABLE_TCP
		527	case PROT_TCPv4:
		528	return send_tcpv4_packet (pkt, si, tos);
		529	#endif
		530	#if ENABLE_ICMP
		531	case PROT_ICMPv4:
		532	return send_icmpv4_packet (pkt, si, tos);
		533	#endif
		534	#if ENABLE_DNS
		535	case PROT_DNSv4:
		536	return send_dnsv4_packet (pkt, si, tos);
		537	#endif
		538	default:
		539	slog (L_CRIT, _("%s: FATAL: trying to send packet with unsupported protocol."), (const char *)si);
		540	}
		541
		542	return false;
		543	}
		544
		545	inline void
		546	vpn::ipv4_ev (ev::io &w, int revents)
		547	{
		548	if (revents & EV_READ)
247	{	549	{
248	vpn_packet *pkt = new vpn_packet;	550	vpn_packet *pkt = new vpn_packet;
249	struct sockaddr_in sa;	551	struct sockaddr_in sa;
250	socklen_t sa_len = sizeof (sa);	552	socklen_t sa_len = sizeof (sa);
251	int len;	553	int len;
252		554
253	len = recvfrom (w.p->fd, &((pkt)[0]), MAXSIZE, 0, (sockaddr )&sa, &sa_len);	555	len = recvfrom (w.fd, &((pkt)[0]), MAXSIZE, 0, (sockaddr )&sa, &sa_len);
254		556
255	sockinfo si(sa);	557	sockinfo si(sa, PROT_IPv4);
256		558
257	if (len > 0)	559	if (len > 0)
258	{	560	{
259	pkt->len = len;	561	pkt->len = len;
260		562
		563	// raw sockets deliver the ipv4 header, but don't expect it on sends
		564	pkt->skip_hdr (IP_OVERHEAD);
		565
261	recv_vpn_packet (pkt, si);	566	recv_vpn_packet (pkt, si);
262	}	567	}
263	else	568	else
264	{	569	{
265	// probably ECONNRESET or somesuch	570	// probably ECONNRESET or somesuch
266	slog (L_DEBUG, _("%s: %s"), (const char *)si, strerror (errno));	571	slog (L_DEBUG, _("%s: %s."), (const char *)si, strerror (errno));
267	}	572	}
268		573
269	delete pkt;	574	delete pkt;
270	}	575	}
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	576	else
278	{	577	{
279	slog (L_ERR,	578	slog (L_ERR,
280	_("FATAL: unknown revents %08x in socket, terminating\n"),	579	_("FATAL: unknown revents %08x in socket, exiting.\n"),
281	revents);	580	revents);
282	exit (1);	581	exit (EXIT_FAILURE);
283	}	582	}
284	}	583	}
285		584
286	void	585	#if ENABLE_ICMP
		586	inline void
287	vpn::ipv4_ev (io_watcher &w, short revents)	587	vpn::icmpv4_ev (ev::io &w, int revents)
288	{	588	{
289	if (revents & (POLLIN \| POLLERR))	589	if (revents & EV_READ)
290	{	590	{
291	vpn_packet *pkt = new vpn_packet;	591	vpn_packet *pkt = new vpn_packet;
292	struct sockaddr_in sa;	592	struct sockaddr_in sa;
293	socklen_t sa_len = sizeof (sa);	593	socklen_t sa_len = sizeof (sa);
294	int len;	594	int len;
295		595
296	len = recvfrom (w.p->fd, &((pkt)[0]), MAXSIZE, 0, (sockaddr )&sa, &sa_len);	596	len = recvfrom (w.fd, &((pkt)[0]), MAXSIZE, 0, (sockaddr )&sa, &sa_len);
297		597
298	sockinfo si(sa, PROT_IPv4);	598	sockinfo si(sa, PROT_ICMPv4);
299		599
300	if (len > 0)	600	if (len > 0)
301	{	601	{
302	pkt->len = len;	602	pkt->len = len;
303		603
		604	icmp_header hdr = (icmp_header )&((*pkt)[IP_OVERHEAD]);
		605
		606	if (hdr->type == ::conf.icmp_type
		607	&& hdr->code == 255)
		608	{
304	// raw sockets deliver the ipv4, but don't expect it on sends	609	// raw sockets deliver the ipv4, but don't expect it on sends
305	// this is slow, but...	610	// this is slow, but...
306	pkt->skip_hdr (IP_OVERHEAD);	611	pkt->skip_hdr (ICMP_OVERHEAD);
307		612
308	recv_vpn_packet (pkt, si);	613	recv_vpn_packet (pkt, si);
		614	}
309	}	615	}
310	else	616	else
311	{	617	{
312	// probably ECONNRESET or somesuch	618	// probably ECONNRESET or somesuch
313	slog (L_DEBUG, _("%s: %s"), (const char *)si, strerror (errno));	619	slog (L_DEBUG, _("%s: %s."), (const char *)si, strerror (errno));
314	}	620	}
315		621
316	delete pkt;	622	delete pkt;
317	}	623	}
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	624	else
325	{	625	{
326	slog (L_ERR,	626	slog (L_ERR,
327	_("FATAL: unknown revents %08x in socket, terminating\n"),	627	_("FATAL: unknown revents %08x in socket, exiting.\n"),
328	revents);	628	revents);
329	exit (1);	629	exit (EXIT_FAILURE);
330	}
331	}
332
333	#if ENABLE_TCP
334
335	struct tcp_connection;
336
337	struct lt_sockinfo
338	{
339	bool operator()(const sockinfo a, const sockinfo b) const
340	{
341	return a < b;
342	}
343	};
344
345	struct tcp_si_map : public map<const sockinfo , tcp_connection , lt_sockinfo> {
346	void cleaner_cb (time_watcher &w); time_watcher cleaner;
347
348	tcp_si_map ()
349	: cleaner(this, &tcp_si_map::cleaner_cb)
350	{
351	cleaner.start (0);
352	}
353	} tcp_si;
354
355	struct tcp_connection : io_watcher {
356	tstamp last_activity;
357	const sockinfo si;
358	vpn &v;
359	bool ok;
360
361	vpn_packet *r_pkt;
362	u32 r_len, r_ofs;
363
364	void tcpv4_ev (io_watcher &w, short revents);
365
366	operator tcp_si_map::value_type()
367	{
368	return tcp_si_map::value_type (&si, this);
369	}
370
371	tcp_connection (int fd, const sockinfo &si_, vpn &v_)
372	: v(v_), si(si_), io_watcher(this, &tcp_connection::tcpv4_ev)
373	{
374	last_activity = NOW;
375	ok = false;
376	r_pkt = 0;
377	start (fd, POLLOUT);
378	}
379
380	~tcp_connection () { if (p) close (p->fd); }
381	};
382
383	void tcp_si_map::cleaner_cb (time_watcher &w)
384	{
385	w.at = NOW + 600;
386	tstamp to = NOW - ::conf.keepalive - 30;
387
388	for (iterator i = begin (); i != end(); )
389	if (i->second->last_activity >= to)
390	++i;
391	else
392	{
393	erase (i);
394	i = begin ();
395	}	630	}
396	}	631	}
		632	#endif
397		633
398	void	634	inline void
399	vpn::send_tcpv4_packet (vpn_packet *pkt, const sockinfo &si, int tos)	635	vpn::udpv4_ev (ev::io &w, int revents)
400	{	636	{
401	tcp_si_map::iterator info = tcp_si.find (&si);	637	if (revents & EV_READ)
402
403	if (info == tcp_si.end ())
404	{
405	// woaw, the first lost packet ;)
406	int fd = socket (PF_INET, SOCK_STREAM, IPPROTO_TCP);
407
408	if (fd >= 0)
409	{
410	fcntl (fd, F_SETFL, O_NONBLOCK);
411
412	if (connect (fd, si.sav4 (), si.salenv4 ()) >= 0
413	\|\| errno == EINPROGRESS)
414	{
415	tcp_connection i = new tcp_connection (fd, si, this);
416
417	tcp_si.insert (*i);
418	}
419	else
420	close (fd);
421	}
422	}	638	{
423	else
424	{
425	tcp_connection *i = info->second;
426
427	i->last_activity = NOW;
428
429	if (i->ok)
430	{
431	setsockopt (i->p->fd, SOL_IP, IP_TOS, &tos, sizeof tos);
432
433	// we use none of the advantages of tcp
434	write (i->p->fd, (void *)pkt, pkt->len + sizeof (u32)) != pkt->len + sizeof (u32);
435	}
436	}
437
438	#if 0
439	setsockopt (udpv4_fd, SOL_IP, IP_TOS, &tos, sizeof tos);
440	sendto (udpv4_fd, &((*pkt)[0]), pkt->len, 0, si.sav4 (), si.salenv4 ());
441	#endif
442	}
443
444	void
445	tcp_connection::tcpv4_ev (io_watcher &w, short revents)
446	{
447	last_activity = NOW;
448
449	if (!ok) // just established?
450	{
451	ok = true;
452	set (POLLIN);
453	}
454
455	if (revents & (POLLIN \| POLLERR))
456	{
457	u32 len;
458
459	if (sizeof (len) == read (p->fd, &len, sizeof (len)))
460	{
461	vpn_packet *pkt = new vpn_packet;	639	vpn_packet *pkt = new vpn_packet;
462
463	if (len == read (p->fd, &((*pkt)[0]), len))
464	{
465	pkt->len = len;
466
467	v.recv_vpn_packet (pkt, si);
468	return;
469	}
470
471	delete pkt;
472	}
473
474	tcp_si.erase (&si);
475
476	set (0);//D
477	}
478	}
479
480	void
481	vpn::tcpv4_ev (io_watcher &w, short revents)
482	{
483	if (revents & (POLLIN \| POLLERR))
484	{
485	struct sockaddr_in sa;	640	struct sockaddr_in sa;
486	socklen_t sa_len = sizeof (sa);	641	socklen_t sa_len = sizeof (sa);
487	int len;	642	int len;
488		643
489	int fd = accept (w.p->fd, (sockaddr *)&sa, &sa_len);	644	len = recvfrom (w.fd, &((pkt)[0]), MAXSIZE, 0, (sockaddr )&sa, &sa_len);
490		645
491	if (fd >= 0)
492	{
493	fcntl (fd, F_SETFL, O_NONBLOCK);
494
495	sockinfo si(sa, PROT_TCPv4);	646	sockinfo si(sa, PROT_UDPv4);
496	tcp_connection i = new tcp_connection (fd, si, this);
497		647
498	slog (L_DEBUG, _("accepted tcp connection from %s\n"), (const char *)si);//D	648	if (len > 0)
499
500	tcp_si.insert (*i);
501	}	649	{
		650	pkt->len = len;
		651
		652	recv_vpn_packet (pkt, si);
		653	}
		654	else
		655	{
		656	// probably ECONNRESET or somesuch
		657	slog (L_DEBUG, _("%s: fd %d, %s."), (const char *)si, w.fd, strerror (errno));
		658	}
		659
		660	delete pkt;
		661	}
		662	else
502	}	663	{
		664	slog (L_ERR,
		665	_("FATAL: unknown revents %08x in socket, exiting.\n"),
		666	revents);
		667	exit (EXIT_FAILURE);
		668	}
503	}	669	}
504		670
505	#endif	671	inline void
506
507	void
508	vpn::tap_ev (io_watcher &w, short revents)	672	vpn::tap_ev (ev::io &w, int revents)
509	{	673	{
510	if (revents & POLLIN)	674	if (revents & EV_READ)
511	{	675	{
512	/* process data */	676	/* process data */
513	tap_packet *pkt;	677	tap_packet *pkt;
514		678
515	pkt = tap->recv ();	679	pkt = tap->recv ();
516		680
		681	if (!pkt)
		682	return;
		683
		684	if (pkt->len > 14)
		685	{
517	int dst = mac2id (pkt->dst);	686	int dst = mac2id (pkt->dst);
518	int src = mac2id (pkt->src);	687	int src = mac2id (pkt->src);
519		688
520	if (src != THISNODE->id)	689	if (src != THISNODE->id)
521	{
522	slog (L_ERR, _("FATAL: tap packet not originating on current node received, terminating."));
523	exit (1);
524	}
525
526	if (dst == THISNODE->id)
527	{
528	slog (L_ERR, _("FATAL: tap packet destined for current node received, terminating."));
529	exit (1);
530	}
531
532	if (dst > conns.size ())
533	slog (L_ERR, _("tap packet for unknown node %d received, ignoring."), dst);
534	else
535	{
536	if (dst)
537	{	690	{
538	// unicast	691	slog (L_ERR, _("FATAL: tap packet not originating on current node received (if-up script not working properly?), exiting."));
539	if (dst != THISNODE->id)	692	exit (EXIT_FAILURE);
540	conns[dst - 1]->inject_data_packet (pkt);
541	}	693	}
		694
		695	if (dst == THISNODE->id)
		696	{
		697	slog (L_ERR, _("FATAL: tap packet destined for current node received, exiting."));
		698	exit (EXIT_FAILURE);
		699	}
		700
		701	if (dst > conns.size ())
		702	slog (L_ERR, _("tap packet for unknown node %d received, ignoring."), dst);
542	else	703	else
543	{
544	// broadcast, first check router, then self, then english
545	connection *router = find_router ();
546
547	if (router)
548	router->inject_data_packet (pkt, true);	704	inject_data_packet (pkt, dst);
549	else
550	for (conns_vector::iterator c = conns.begin (); c != conns.end (); ++c)
551	if ((*c)->conf != THISNODE)
552	(*c)->inject_data_packet (pkt);
553	}
554	}	705	}
555		706
556	delete pkt;	707	delete pkt;
557	}
558	else if (revents & (POLLHUP \| POLLERR))
559	{
560	slog (L_ERR, _("FATAL: POLLHUP or POLLERR on network device fd, terminating."));
561	exit (1);
562	}	708	}
563	else	709	else
564	abort ();	710	abort ();
565	}	711	}
566		712
567	void	713	inline void
568	vpn::event_cb (time_watcher &w)	714	vpn::event_cb (ev::timer &w, int)
569	{	715	{
570	if (events)	716	if (events)
571	{	717	{
572	if (events & EVENT_SHUTDOWN)	718	if (events & EVENT_SHUTDOWN)
573	{	719	{
574	slog (L_INFO, _("preparing shutdown..."));	720	slog (L_INFO, _("preparing shutdown..."));
575		721
576	shutdown_all ();	722	shutdown_all ();
577
578	remove_pid (pidfilename);	723	remove_pid (conf.pidfilename);
579
580	slog (L_INFO, _("terminating"));	724	slog (L_INFO, _("exiting."));
581		725	exit (EXIT_SUCCESS);
582	exit (0);
583	}	726	}
584		727
585	if (events & EVENT_RECONNECT)	728	if (events & EVENT_RECONNECT)
586	{	729	{
587	slog (L_INFO, _("forced reconnect"));	730	slog (L_INFO, _("forced reconnect."));
588		731
589	reconnect_all ();	732	reconnect_all ();
590	}	733	}
591		734
592	events = 0;	735	events = 0;
593	}	736	}
594
595	w.at = TSTAMP_CANCEL;
596	}	737	}
597		738
598	void	739	void
599	vpn::shutdown_all ()	740	vpn::shutdown_all ()
600	{	741	{
…		…
610		751
611	conns.clear ();	752	conns.clear ();
612		753
613	connection_init ();	754	connection_init ();
614		755
615	for (configuration::node_vector::iterator i = conf.nodes.begin ();	756	for (configuration::node_vector::iterator i = conf.nodes.begin (); i != conf.nodes.end (); ++i)
616	i != conf.nodes.end (); ++i)	757	conns.push_back (new connection (this, *i));
617	{
618	connection *conn = new connection (this);
619		758
620	conn->conf = *i;	759	for (conns_vector::iterator c = conns.begin (); c != conns.end (); ++c)
621	conns.push_back (conn);
622
623	conn->establish_connection ();	760	(*c)->establish_connection ();
624	}
625	}	761	}
626		762
627	connection *vpn::find_router ()	763	bool
		764	vpn::can_direct (conf_node src, conf_node dst) const
628	{	765	{
629	u32 prio = 0;	766	return src != dst
		767	&& src->may_direct (dst)
		768	&& dst->may_direct (src)
		769	&& (((src->protocols & dst->protocols) && src->connectmode == conf_node::C_ALWAYS)
		770	\|\| (src->protocols & dst->connectable_protocols ()));
		771	}
		772
		773	// only works for indirect and routed connections: find a router
		774	// from THISNODE to dst
		775	connection *
		776	vpn::find_router_for (const connection *dst)
		777	{
630	connection *router = 0;	778	connection *router = 0;
631		779
		780	// first try to find a router with a direct connection, route there
		781	// regardless of any other considerations.
		782	{
		783	u32 prio = 1;
		784
		785	for (conns_vector::iterator i = conns.begin (); i != conns.end (); ++i)
		786	{
		787	connection c = i;
		788
		789	if (c->conf->routerprio > prio
		790	&& c->conf != THISNODE
		791	&& can_direct (c->conf, dst->conf)
		792	&& c->ictx && c->octx)
		793	{
		794	prio = c->conf->routerprio;
		795	router = c;
		796	}
		797	}
		798	}
		799
		800	if (router)
		801	return router;
		802
		803	// second try find the router with the highest priority, higher than ours
		804	{
		805	u32 prio = THISNODE->routerprio ? THISNODE->routerprio : 1;
		806
		807	for (conns_vector::iterator i = conns.begin (); i != conns.end (); ++i)
		808	{
		809	connection c = i;
		810
		811	if (c->conf->routerprio > prio
		812	&& c != dst
		813	&& c->conf != THISNODE
		814	&& c->ictx && c->octx)
		815	{
		816	prio = c->conf->routerprio;
		817	router = c;
		818	}
		819	}
		820	}
		821
		822	return router;
		823	}
		824
		825	void
		826	vpn::connection_established (connection *c)
		827	{
632	for (conns_vector::iterator i = conns.begin (); i != conns.end (); ++i)	828	for (conns_vector::iterator i = conns.begin (); i != conns.end (); ++i)
633	{	829	{
634	connection c = i;	830	connection o = i;
635		831
636	if (c->conf->routerprio > prio	832	if (!o->is_direct
637	&& c->connectmode == conf_node::C_ALWAYS	833	&& o->si.valid ()
638	&& c->conf != THISNODE	834	&& c->si != o->si
639	&& c->ictx && c->octx)	835	&& c == find_router_for (o))
640	{
641	prio = c->conf->routerprio;
642	router = c;
643	}	836	{
		837	slog (L_DEBUG, _("%s: can now route packets via %s, re-keying connection."),
		838	o->conf->nodename, c->conf->nodename);
		839	o->rekey ();
		840	}
644	}	841	}
645
646	return router;
647	}	842	}
648		843
649	void vpn::connect_request (int id)	844	void
		845	vpn::send_connect_request (connection *c)
650	{	846	{
651	connection *c = find_router ();	847	connection *r = find_router_for (c);
652		848
653	if (c)	849	if (r)
		850	{
		851	slog (L_TRACE, _("%s: no address known, sending mediated connection request via %s."),
		852	c->conf->nodename, r->conf->nodename);
654	c->connect_request (id);	853	r->send_connect_request (c->conf->id);
655	//else // does not work, because all others must connect to the same router	854	}
656	// // no router found, aggressively connect to all routers	855	else
657	// for (conns_vector::iterator i = conns.begin (); i != conns.end (); ++i)	856	slog (L_DEBUG, _("%s: no way to connect and no router found: unable to connect at this time."),
658	// if ((*i)->conf->routerprio)	857	c->conf->nodename);
659	// (*i)->establish_connection ();
660	}	858	}
661		859
662	void	860	void
663	connection::dump_status ()	861	connection::dump_status ()
664	{	862	{
665	slog (L_NOTICE, _("node %s (id %d)"), conf->nodename, conf->id);	863	slog (L_NOTICE, _("node %s (id %d)"), conf->nodename, conf->id);
666	slog (L_NOTICE, _(" connectmode %d (%d) / sockaddr %s / minor %d"),	864	slog (L_NOTICE, _(" connectmode %d (%d) / sockaddr %s / minor %d"),
667	connectmode, conf->connectmode, (const char *)si, (int)prot_minor);	865	connectmode, conf->connectmode, (const char *)si, (int)prot_minor);
668	slog (L_NOTICE, _(" ictx/octx %08lx/%08lx / oseqno %d / retry_cnt %d"),	866	slog (L_NOTICE, _(" ictx/octx %08lx/%08lx / oseqno %d / retry_cnt %d"),
669	(long)ictx, (long)octx, (int)oseqno, (int)retry_cnt);	867	(long)ictx, (long)octx, (int)oseqno, (int)retry_cnt);
670	slog (L_NOTICE, _(" establish_conn %ld / rekey %ld / keepalive %ld"),
671	(long)(establish_connection.at), (long)(rekey.at), (long)(keepalive.at));
672	}	868	}
673		869
674	void	870	void
675	vpn::dump_status ()	871	vpn::dump_status ()
676	{	872	{
677	slog (L_NOTICE, _("BEGIN status dump (%ld)"), (long)NOW);	873	slog (L_NOTICE, _("BEGIN status dump (%ld)"), (long)ev_now ());
678		874
679	for (conns_vector::iterator c = conns.begin (); c != conns.end (); ++c)	875	for (conns_vector::iterator c = conns.begin (); c != conns.end (); ++c)
680	(*c)->dump_status ();	876	(*c)->dump_status ();
681		877
682	slog (L_NOTICE, _("END status dump"));	878	slog (L_NOTICE, _("END status dump"));
683	}	879	}
684		880
685	vpn::vpn (void)	881	vpn::vpn (void)
686	: event(this, &vpn::event_cb)	882	{
		883	event .set<vpn, &vpn::event_cb > (this);
687	, udpv4_ev_watcher(this, &vpn::udpv4_ev)	884	udpv4_ev_watcher .set<vpn, &vpn::udpv4_ev > (this);
688	, ipv4_ev_watcher (this, &vpn::ipv4_ev)	885	ipv4_ev_watcher .set<vpn, &vpn::ipv4_ev > (this);
689	, tap_ev_watcher (this, &vpn::tap_ev)
690	#if ENABLE_TCP	886	#if ENABLE_TCP
691	, tcpv4_ev_watcher(this, &vpn::tcpv4_ev)	887	tcpv4_ev_watcher .set<vpn, &vpn::tcpv4_ev > (this);
692	#endif	888	#endif
693	{	889	#if ENABLE_ICMP
		890	icmpv4_ev_watcher.set<vpn, &vpn::icmpv4_ev> (this);
		891	#endif
		892	#if ENABLE_DNS
		893	dnsv4_ev_watcher .set<vpn, &vpn::dnsv4_ev > (this);
		894	#endif
		895	tap_ev_watcher .set<vpn, &vpn::tap_ev > (this);
694	}	896	}
695		897
696	vpn::~vpn ()	898	vpn::~vpn ()
697	{	899	{
698	}	900	}

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Comparing gvpe/src/vpn.C (file contents): Revision 1.4 by pcg, Fri Apr 4 05:26:45 2003 UTC vs. Revision 1.56 by root, Tue Feb 8 23:11:36 2011 UTC

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Comparing gvpe/src/vpn.C (file contents):
Revision 1.4 by pcg, Fri Apr 4 05:26:45 2003 UTC vs.
Revision 1.56 by root, Tue Feb 8 23:11:36 2011 UTC