[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 1.50 by pcg, Sun Aug 10 02:49:21 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	ipv4_tos = -1;
83	udpv4_fd = -1;	128	ipv4_fd = -1;
84		129
85	if (THISNODE->protocols & PROT_UDPv4)	130	if (THISNODE->protocols & PROT_IPv4 && ::conf.ip_proto)
86	{	131	{
87	udpv4_fd = socket (PF_INET, SOCK_DGRAM, IPPROTO_UDP);	132	ipv4_fd = socket (PF_INET, SOCK_RAW, ::conf.ip_proto);
88		133
89	if (udpv4_fd < 0)	134	if (ipv4_fd < 0)
90	return -1;	135	return -1;
91		136
92	// standard daemon practise...	137	fcntl (ipv4_fd, F_SETFL, O_NONBLOCK);
93	{	138	fcntl (ipv4_fd, F_SETFD, FD_CLOEXEC);
94	int oval = 1;
95	setsockopt (udpv4_fd, SOL_SOCKET, SO_REUSEADDR, &oval, sizeof oval);
96	}
97		139
98	sockinfo si (THISNODE, PROT_UDPv4);	140	#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	141	// this I really consider a linux bug. I am neither connected
108	// nor do I fragment myself. Linux still sets DF and doesn't	142	// nor do I fragment myself. Linux still sets DF and doesn't
109	// fragment for me sometimes.	143	// fragment for me sometimes.
110	{	144	{
111	int oval = IP_PMTUDISC_DONT;	145	int oval = IP_PMTUDISC_DONT;
112	setsockopt (udpv4_fd, SOL_IP, IP_MTU_DISCOVER, &oval, sizeof oval);	146	setsockopt (ipv4_fd, SOL_IP, IP_MTU_DISCOVER, &oval, sizeof oval);
		147	}
		148	#endif
		149
		150	sockinfo si (THISNODE, PROT_IPv4);
		151
		152	if (bind (ipv4_fd, si.sav4 (), si.salenv4 ()))
		153	{
		154	slog (L_ERR, _("can't bind ipv4 socket on %s: %s, exiting."), (const char *)si, strerror (errno));
		155	exit (EXIT_FAILURE);
113	}	156	}
114	#endif
115		157
116	udpv4_ev_watcher.start (udpv4_fd, POLLIN);	158	ipv4_ev_watcher.start (ipv4_fd, EV_READ);
117	}	159	}
118		160
		161	udpv4_tos = -1;
119	ipv4_fd = -1;	162	udpv4_fd = -1;
120	if (THISNODE->protocols & PROT_IPv4)
121	{
122	ipv4_fd = socket (PF_INET, SOCK_RAW, ::conf.ip_proto);
123		163
		164	if (THISNODE->protocols & PROT_UDPv4 && THISNODE->udp_port)
		165	{
		166	udpv4_fd = socket (PF_INET, SOCK_DGRAM, IPPROTO_UDP);
		167
124	if (ipv4_fd < 0)	168	if (udpv4_fd < 0)
125	return -1;	169	return -1;
126		170
127	sockinfo si (THISNODE, PROT_IPv4);	171	fcntl (udpv4_fd, F_SETFL, O_NONBLOCK);
		172	fcntl (udpv4_fd, F_SETFD, FD_CLOEXEC);
128		173
129	if (bind (ipv4_fd, si.sav4 (), si.salenv4 ()))	174	// standard daemon practise...
130	{	175	{
131	slog (L_ERR, _("can't bind ipv4 socket on %s: %s"), (const char *)si, strerror (errno));	176	int oval = 1;
132	exit (1);	177	setsockopt (udpv4_fd, SOL_SOCKET, SO_REUSEADDR, &oval, sizeof oval);
133	}	178	}
134		179
135	#ifdef IP_MTU_DISCOVER	180	#if defined(SOL_IP) && defined(IP_MTU_DISCOVER)
136	// this I really consider a linux bug. I am neither connected	181	// this I really consider a linux bug. I am neither connected
137	// nor do I fragment myself. Linux still sets DF and doesn't	182	// nor do I fragment myself. Linux still sets DF and doesn't
138	// fragment for me sometimes.	183	// fragment for me sometimes.
139	{	184	{
140	int oval = IP_PMTUDISC_DONT;	185	int oval = IP_PMTUDISC_DONT;
		186	setsockopt (udpv4_fd, SOL_IP, IP_MTU_DISCOVER, &oval, sizeof oval);
		187	}
		188	#endif
		189
		190	sockinfo si (THISNODE, PROT_UDPv4);
		191
		192	if (bind (udpv4_fd, si.sav4 (), si.salenv4 ()))
		193	{
		194	slog (L_ERR, _("can't bind udpv4 on %s: %s, exiting."), (const char *)si, strerror (errno));
		195	exit (EXIT_FAILURE);
		196	}
		197
		198	udpv4_ev_watcher.start (udpv4_fd, EV_READ);
		199	}
		200
		201	icmpv4_tos = -1;
		202	icmpv4_fd = -1;
		203
		204	#if ENABLE_ICMP
		205	if (THISNODE->protocols & PROT_ICMPv4)
		206	{
		207	icmpv4_fd = socket (PF_INET, SOCK_RAW, IPPROTO_ICMP);
		208
		209	if (icmpv4_fd < 0)
		210	return -1;
		211
		212	fcntl (icmpv4_fd, F_SETFL, O_NONBLOCK);
		213	fcntl (icmpv4_fd, F_SETFD, FD_CLOEXEC);
		214
		215	#ifdef ICMP_FILTER
		216	{
		217	icmp_filter oval;
		218	oval.data = 0xffffffff;
		219	if (::conf.icmp_type < 32)
		220	oval.data &= ~(1 << ::conf.icmp_type);
		221
		222	setsockopt (icmpv4_fd, SOL_RAW, ICMP_FILTER, &oval, sizeof oval);
		223	}
		224	#endif
		225
		226	#if defined(SOL_IP) && defined(IP_MTU_DISCOVER)
		227	// this I really consider a linux bug. I am neither connected
		228	// nor do I fragment myself. Linux still sets DF and doesn't
		229	// fragment for me sometimes.
		230	{
		231	int oval = IP_PMTUDISC_DONT;
141	setsockopt (ipv4_fd, SOL_IP, IP_MTU_DISCOVER, &oval, sizeof oval);	232	setsockopt (icmpv4_fd, SOL_IP, IP_MTU_DISCOVER, &oval, sizeof oval);
		233	}
		234	#endif
		235
		236	sockinfo si (THISNODE, PROT_ICMPv4);
		237
		238	if (bind (icmpv4_fd, si.sav4 (), si.salenv4 ()))
		239	{
		240	slog (L_ERR, _("can't bind icmpv4 on %s: %s, exiting."), (const char *)si, strerror (errno));
		241	exit (EXIT_FAILURE);
142	}	242	}
143	#endif
144		243
145	ipv4_ev_watcher.start (ipv4_fd, POLLIN);	244	icmpv4_ev_watcher.start (icmpv4_fd, EV_READ);
146	}	245	}
		246	#endif
		247
		248	tcpv4_fd = -1;
147		249
148	#if ENABLE_TCP	250	#if ENABLE_TCP
149	if (THISNODE->protocols & PROT_TCPv4)	251	if (THISNODE->protocols & PROT_TCPv4 && THISNODE->tcp_port)
150	{	252	{
151	tcpv4_fd = socket (PF_INET, SOCK_STREAM, IPPROTO_TCP);	253	tcpv4_fd = socket (PF_INET, SOCK_STREAM, IPPROTO_TCP);
152		254
153	if (tcpv4_fd < 0)	255	if (tcpv4_fd < 0)
154	return -1;	256	return -1;
155		257
		258	fcntl (tcpv4_fd, F_SETFL, O_NONBLOCK);
		259	fcntl (tcpv4_fd, F_SETFD, FD_CLOEXEC);
		260
156	// standard daemon practise...	261	// standard daemon practise...
157	{	262	{
158	int oval = 1;	263	int oval = 1;
159	setsockopt (tcpv4_fd, SOL_SOCKET, SO_REUSEADDR, &oval, sizeof oval);	264	setsockopt (tcpv4_fd, SOL_SOCKET, SO_REUSEADDR, &oval, sizeof oval);
160	}	265	}
161		266
162	sockinfo si (THISNODE, PROT_TCPv4);	267	sockinfo si (THISNODE, PROT_TCPv4);
163		268
164	if (bind (tcpv4_fd, si.sav4 (), si.salenv4 ()))	269	if (bind (tcpv4_fd, si.sav4 (), si.salenv4 ()))
165	{	270	{
166	slog (L_ERR, _("can't bind tcpv4 on %s: %s"), (const char *)si, strerror (errno));	271	slog (L_ERR, _("can't bind tcpv4 on %s: %s, exiting."), (const char *)si, strerror (errno));
167	exit (1);	272	exit (EXIT_FAILURE);
168	}	273	}
169		274
170	if (listen (tcpv4_fd, 5))	275	if (listen (tcpv4_fd, 5))
171	{	276	{
172	slog (L_ERR, _("can't listen tcpv4 on %s: %s"), (const char *)si, strerror (errno));	277	slog (L_ERR, _("can't listen tcpv4 on %s: %s, exiting."), (const char *)si, strerror (errno));
173	exit (1);	278	exit (EXIT_FAILURE);
		279	}
		280
		281	tcpv4_ev_watcher.start (tcpv4_fd, EV_READ);
		282	}
		283	#endif
		284
		285	dnsv4_tos = -1;
		286	dnsv4_fd = -1;
		287
		288	#if ENABLE_DNS
		289	if (THISNODE->protocols & PROT_DNSv4)
		290	{
		291	dns_forwarder.set (::conf.dns_forw_host, ::conf.dns_forw_port, PROT_DNSv4);
		292
		293	dnsv4_fd = socket (PF_INET, SOCK_DGRAM, IPPROTO_UDP);
		294
		295	if (dnsv4_fd < 0)
		296	return -1;
		297
		298	fcntl (dnsv4_fd, F_SETFL, O_NONBLOCK);
		299	fcntl (dnsv4_fd, F_SETFD, FD_CLOEXEC);
		300
		301	# if defined(SOL_IP) && defined(IP_MTU_DISCOVER)
		302	// this I really consider a linux bug. I am neither connected
		303	// nor do I fragment myself. Linux still sets DF and doesn't
		304	// fragment for me sometimes.
		305	{
		306	int oval = IP_PMTUDISC_DONT;
		307	setsockopt (dnsv4_fd, SOL_IP, IP_MTU_DISCOVER, &oval, sizeof oval);
174	}	308	}
175
176	tcpv4_ev_watcher.start (tcpv4_fd, POLLIN);
177	}
178	#endif	309	# endif
		310
		311	// standard daemon practise...
		312	{
		313	int oval = 1;
		314	setsockopt (dnsv4_fd, SOL_SOCKET, SO_REUSEADDR, &oval, sizeof oval);
		315	}
		316
		317	sockinfo si (THISNODE->dns_hostname,
		318	THISNODE->dns_hostname ? THISNODE->dns_port : 0,
		319	PROT_DNSv4);
		320
		321	if (bind (dnsv4_fd, si.sav4 (), si.salenv4 ()))
		322	{
		323	slog (L_ERR, _("can't bind dnsv4 on %s: %s, exiting."), (const char *)si, strerror (errno));
		324	exit (EXIT_FAILURE);
		325	}
		326
		327	dnsv4_ev_watcher.start (dnsv4_fd, EV_READ);
		328	}
		329	#endif
		330
		331	/////////////////////////////////////////////////////////////////////////////
		332
		333	reconnect_all ();
		334
		335	/////////////////////////////////////////////////////////////////////////////
179		336
180	tap = new tap_device ();	337	tap = new tap_device ();
181	if (!tap) //D this, of course, never catches	338	if (!tap) //D this, of course, never catches
182	{	339	{
183	slog (L_ERR, _("cannot create network interface '%s'"), conf.ifname);	340	slog (L_ERR, _("cannot create network interface '%s', exiting."), conf.ifname);
184	exit (1);	341	exit (EXIT_FAILURE);
185	}	342	}
186		343
187	run_script (run_script_cb (this, &vpn::script_if_up), true);	344	fcntl (tap->fd, F_SETFD, FD_CLOEXEC);
188		345
		346	run_script_cb cb;
		347	cb.set<vpn, &vpn::script_if_init> (this);
		348
		349	if (tap->if_up () &&
		350	!run_script (cb, true))
		351	{
		352	slog (L_ERR, _("interface initialization command '%s' failed, exiting."),
		353	tap->if_up ());
		354	exit (EXIT_FAILURE);
		355	}
		356
		357	cb.set<vpn, &vpn::script_if_up> (this);
		358	if (!run_script (cb, true))
		359	{
		360	slog (L_ERR, _("if-up command execution failed, exiting."));
		361	exit (EXIT_FAILURE);
		362	}
		363
189	tap_ev_watcher.start (tap->fd, POLLIN);	364	tap_ev_watcher.start (tap->fd, EV_READ);
190
191	reconnect_all ();
192		365
193	return 0;	366	return 0;
194	}	367	}
195		368
		369	bool
		370	vpn::send_ipv4_packet (vpn_packet *pkt, const sockinfo &si, int tos)
		371	{
		372	set_tos (ipv4_fd, ipv4_tos, tos);
		373	sendto (ipv4_fd, &((*pkt)[0]), pkt->len, 0, si.sav4 (), si.salenv4 ());
		374
		375	return true;
		376	}
		377
		378	static u16
		379	ipv4_checksum (u16 *data, unsigned int len)
		380	{
		381	// use 32 bit accumulator and fold back carry bits at the end
		382	u32 sum = 0;
		383
		384	while (len > 1)
		385	{
		386	sum += *data++;
		387	len -= 2;
		388	}
		389
		390	// odd byte left?
		391	if (len)
		392	sum += (u8 )data;
		393
		394	// add back carry bits
		395	sum = (sum >> 16) + (sum & 0xffff); // lo += hi
		396	sum += (sum >> 16); // carry
		397
		398	return ~sum;
		399	}
		400
		401	#if ENABLE_ICMP
		402	bool
		403	vpn::send_icmpv4_packet (vpn_packet *pkt, const sockinfo &si, int tos)
		404	{
		405	pkt->unshift_hdr (4);
		406
		407	icmp_header hdr = (icmp_header )&((*pkt)[0]);
		408	hdr->type = ::conf.icmp_type;
		409	hdr->code = 255;
		410	hdr->checksum = 0;
		411	hdr->checksum = ipv4_checksum ((u16 *)hdr, pkt->len);
		412
		413	set_tos (icmpv4_fd, icmpv4_tos, tos);
		414	sendto (icmpv4_fd, &((*pkt)[0]), pkt->len, 0, si.sav4 (), si.salenv4 ());
		415
		416	return true;
		417	}
		418	#endif
		419
		420	bool
		421	vpn::send_udpv4_packet (vpn_packet *pkt, const sockinfo &si, int tos)
		422	{
		423	set_tos (udpv4_fd, udpv4_tos, tos);
		424	sendto (udpv4_fd, &((*pkt)[0]), pkt->len, 0, si.sav4 (), si.salenv4 ());
		425
		426	return true;
		427	}
		428
196	void	429	void
197	vpn::send_ipv4_packet (vpn_packet *pkt, const sockinfo &si, int tos)	430	vpn::inject_data_packet (tap_packet *pkt, int dst)
198	{	431	{
199	setsockopt (ipv4_fd, SOL_IP, IP_TOS, &tos, sizeof tos);	432	if (dst)
200	sendto (ipv4_fd, &((*pkt)[0]), pkt->len, 0, si.sav4 (), si.salenv4 ());	433	{
201	}	434	// unicast
202		435	if (dst != THISNODE->id)
203	void	436	conns[dst - 1]->inject_data_packet (pkt);
204	vpn::send_udpv4_packet (vpn_packet *pkt, const sockinfo &si, int tos)	437	}
205	{	438	else
206	setsockopt (udpv4_fd, SOL_IP, IP_TOS, &tos, sizeof tos);	439	{
207	sendto (udpv4_fd, &((*pkt)[0]), pkt->len, 0, si.sav4 (), si.salenv4 ());	440	// broadcast, this is ugly, but due to the security policy
		441	// we have to connect to all hosts...
		442	for (conns_vector::iterator c = conns.begin (); c != conns.end (); ++c)
		443	if ((*c)->conf != THISNODE)
		444	(*c)->inject_data_packet (pkt);
		445	}
208	}	446	}
209		447
210	void	448	void
211	vpn::recv_vpn_packet (vpn_packet *pkt, const sockinfo &rsi)	449	vpn::recv_vpn_packet (vpn_packet *pkt, const sockinfo &rsi)
212	{	450	{
213	unsigned int src = pkt->src ();	451	unsigned int src = pkt->src ();
214	unsigned int dst = pkt->dst ();	452	unsigned int dst = pkt->dst ();
215		453
216	slog (L_NOISE, _("<<?/%s received possible vpn packet type %d from %d to %d, length %d"),	454	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);	455	(const char *)rsi, pkt->typ (), pkt->src (), pkt->dst (), pkt->len);
218		456
219	if (src == 0 \|\| src > conns.size ()	457	if (src == 0 \|\| src > conns.size ()
220	\|\| dst > conns.size ()	458	\|\| dst > conns.size ()
221	\|\| pkt->typ () >= vpn_packet::PT_MAX)	459	\|\| pkt->typ () >= vpn_packet::PT_MAX)
222	slog (L_WARN, _("(%s): received corrupted packet type %d (src %d, dst %d)"),	460	slog (L_WARN, _("(%s): received corrupted packet type %d (src %d, dst %d)."),
		461	(const char *)rsi, pkt->typ (), pkt->src (), pkt->dst ());
		462	else if (dst > conns.size ())
		463	slog (L_WARN, _("(%s): received corrupted packet type %d (src %d, dst %d)."),
223	(const char *)rsi, pkt->typ (), pkt->src (), pkt->dst ());	464	(const char *)rsi, pkt->typ (), pkt->src (), pkt->dst ());
224	else	465	else
225	{	466	{
226	connection *c = conns[src - 1];	467	connection *c = conns[src - 1];
227		468
228	if (dst == 0 && !THISNODE->routerprio)	469	if (dst == 0)
229	slog (L_WARN, _("%s(%s): received broadcast, but we are no router"),	470	slog (L_WARN, _("%s(%s): received broadcast (protocol violation)."),
230	c->conf->nodename, (const char *)rsi);	471	c->conf->nodename, (const char *)rsi);
231	else if (dst != 0 && dst != THISNODE->id)	472	else if (dst != THISNODE->id)
232	// FORWARDING NEEDED ;)	473	{
		474	if (THISNODE->routerprio)
		475	// the tos setting gets lost here. who cares.
		476	conns[dst - 1]->inject_vpn_packet (pkt);
		477	else
233	slog (L_WARN,	478	slog (L_WARN,
234	_("received frame for node %d ('%s') from %s, but this is node %d ('%s')"),	479	_("%s(%s): request to forward packet to %s, but we are no router (config mismatch?)."),
		480	c->conf->nodename, (const char *)rsi,
235	dst, conns[dst - 1]->conf->nodename,	481	conns[dst - 1]->conf->nodename);
236	(const char *)rsi,	482	}
237	THISNODE->id, THISNODE->nodename);
238	else	483	else
239	c->recv_vpn_packet (pkt, rsi);	484	c->recv_vpn_packet (pkt, rsi);
240	}	485	}
241	}	486	}
242		487
243	void	488	bool
244	vpn::udpv4_ev (io_watcher &w, short revents)	489	vpn::send_vpn_packet (vpn_packet *pkt, const sockinfo &si, int tos)
245	{	490	{
246	if (revents & (POLLIN \| POLLERR))	491	switch (si.prot)
		492	{
		493	case PROT_IPv4:
		494	return send_ipv4_packet (pkt, si, tos);
		495
		496	case PROT_UDPv4:
		497	return send_udpv4_packet (pkt, si, tos);
		498
		499	#if ENABLE_TCP
		500	case PROT_TCPv4:
		501	return send_tcpv4_packet (pkt, si, tos);
		502	#endif
		503	#if ENABLE_ICMP
		504	case PROT_ICMPv4:
		505	return send_icmpv4_packet (pkt, si, tos);
		506	#endif
		507	#if ENABLE_DNS
		508	case PROT_DNSv4:
		509	return send_dnsv4_packet (pkt, si, tos);
		510	#endif
		511	default:
		512	slog (L_CRIT, _("%s: FATAL: trying to send packet with unsupported protocol."), (const char *)si);
		513	}
		514
		515	return false;
		516	}
		517
		518	inline void
		519	vpn::ipv4_ev (ev::io &w, int revents)
		520	{
		521	if (revents & EV_READ)
247	{	522	{
248	vpn_packet *pkt = new vpn_packet;	523	vpn_packet *pkt = new vpn_packet;
249	struct sockaddr_in sa;	524	struct sockaddr_in sa;
250	socklen_t sa_len = sizeof (sa);	525	socklen_t sa_len = sizeof (sa);
251	int len;	526	int len;
252		527
253	len = recvfrom (w.p->fd, &((pkt)[0]), MAXSIZE, 0, (sockaddr )&sa, &sa_len);	528	len = recvfrom (w.fd, &((pkt)[0]), MAXSIZE, 0, (sockaddr )&sa, &sa_len);
254		529
255	sockinfo si(sa);	530	sockinfo si(sa, PROT_IPv4);
256		531
257	if (len > 0)	532	if (len > 0)
258	{	533	{
259	pkt->len = len;	534	pkt->len = len;
260		535
		536	// raw sockets deliver the ipv4 header, but don't expect it on sends
		537	pkt->skip_hdr (IP_OVERHEAD);
		538
261	recv_vpn_packet (pkt, si);	539	recv_vpn_packet (pkt, si);
262	}	540	}
263	else	541	else
264	{	542	{
265	// probably ECONNRESET or somesuch	543	// probably ECONNRESET or somesuch
266	slog (L_DEBUG, _("%s: %s"), (const char *)si, strerror (errno));	544	slog (L_DEBUG, _("%s: %s."), (const char *)si, strerror (errno));
267	}	545	}
268		546
269	delete pkt;	547	delete pkt;
270	}	548	}
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	549	else
278	{	550	{
279	slog (L_ERR,	551	slog (L_ERR,
280	_("FATAL: unknown revents %08x in socket, terminating\n"),	552	_("FATAL: unknown revents %08x in socket, exiting.\n"),
281	revents);	553	revents);
282	exit (1);	554	exit (EXIT_FAILURE);
283	}	555	}
284	}	556	}
285		557
286	void	558	#if ENABLE_ICMP
		559	inline void
287	vpn::ipv4_ev (io_watcher &w, short revents)	560	vpn::icmpv4_ev (ev::io &w, int revents)
288	{	561	{
289	if (revents & (POLLIN \| POLLERR))	562	if (revents & EV_READ)
290	{	563	{
291	vpn_packet *pkt = new vpn_packet;	564	vpn_packet *pkt = new vpn_packet;
292	struct sockaddr_in sa;	565	struct sockaddr_in sa;
293	socklen_t sa_len = sizeof (sa);	566	socklen_t sa_len = sizeof (sa);
294	int len;	567	int len;
295		568
296	len = recvfrom (w.p->fd, &((pkt)[0]), MAXSIZE, 0, (sockaddr )&sa, &sa_len);	569	len = recvfrom (w.fd, &((pkt)[0]), MAXSIZE, 0, (sockaddr )&sa, &sa_len);
297		570
298	sockinfo si(sa, PROT_IPv4);	571	sockinfo si(sa, PROT_ICMPv4);
299		572
300	if (len > 0)	573	if (len > 0)
301	{	574	{
302	pkt->len = len;	575	pkt->len = len;
303		576
		577	icmp_header hdr = (icmp_header )&((*pkt)[IP_OVERHEAD]);
		578
		579	if (hdr->type == ::conf.icmp_type
		580	&& hdr->code == 255)
		581	{
304	// raw sockets deliver the ipv4, but don't expect it on sends	582	// raw sockets deliver the ipv4, but don't expect it on sends
305	// this is slow, but...	583	// this is slow, but...
306	pkt->skip_hdr (IP_OVERHEAD);	584	pkt->skip_hdr (ICMP_OVERHEAD);
307		585
308	recv_vpn_packet (pkt, si);	586	recv_vpn_packet (pkt, si);
		587	}
309	}	588	}
310	else	589	else
311	{	590	{
312	// probably ECONNRESET or somesuch	591	// probably ECONNRESET or somesuch
313	slog (L_DEBUG, _("%s: %s"), (const char *)si, strerror (errno));	592	slog (L_DEBUG, _("%s: %s."), (const char *)si, strerror (errno));
314	}	593	}
315		594
316	delete pkt;	595	delete pkt;
317	}	596	}
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	597	else
325	{	598	{
326	slog (L_ERR,	599	slog (L_ERR,
327	_("FATAL: unknown revents %08x in socket, terminating\n"),	600	_("FATAL: unknown revents %08x in socket, exiting.\n"),
328	revents);	601	revents);
329	exit (1);	602	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	}	603	}
396	}	604	}
		605	#endif
397		606
398	void	607	inline void
399	vpn::send_tcpv4_packet (vpn_packet *pkt, const sockinfo &si, int tos)	608	vpn::udpv4_ev (ev::io &w, int revents)
400	{	609	{
401	tcp_si_map::iterator info = tcp_si.find (&si);	610	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	}	611	{
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;	612	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;	613	struct sockaddr_in sa;
486	socklen_t sa_len = sizeof (sa);	614	socklen_t sa_len = sizeof (sa);
487	int len;	615	int len;
488		616
489	int fd = accept (w.p->fd, (sockaddr *)&sa, &sa_len);	617	len = recvfrom (w.fd, &((pkt)[0]), MAXSIZE, 0, (sockaddr )&sa, &sa_len);
490		618
491	if (fd >= 0)
492	{
493	fcntl (fd, F_SETFL, O_NONBLOCK);
494
495	sockinfo si(sa, PROT_TCPv4);	619	sockinfo si(sa, PROT_UDPv4);
496	tcp_connection i = new tcp_connection (fd, si, this);
497		620
498	slog (L_DEBUG, _("accepted tcp connection from %s\n"), (const char *)si);//D	621	if (len > 0)
499
500	tcp_si.insert (*i);
501	}	622	{
		623	pkt->len = len;
		624
		625	recv_vpn_packet (pkt, si);
		626	}
		627	else
		628	{
		629	// probably ECONNRESET or somesuch
		630	slog (L_DEBUG, _("%s: fd %d, %s."), (const char *)si, w.fd, strerror (errno));
		631	}
		632
		633	delete pkt;
		634	}
		635	else
502	}	636	{
		637	slog (L_ERR,
		638	_("FATAL: unknown revents %08x in socket, exiting.\n"),
		639	revents);
		640	exit (EXIT_FAILURE);
		641	}
503	}	642	}
504		643
505	#endif	644	inline void
506
507	void
508	vpn::tap_ev (io_watcher &w, short revents)	645	vpn::tap_ev (ev::io &w, int revents)
509	{	646	{
510	if (revents & POLLIN)	647	if (revents & EV_READ)
511	{	648	{
512	/* process data */	649	/* process data */
513	tap_packet *pkt;	650	tap_packet *pkt;
514		651
515	pkt = tap->recv ();	652	pkt = tap->recv ();
516		653
		654	if (!pkt)
		655	return;
		656
		657	if (pkt->len > 14)
		658	{
517	int dst = mac2id (pkt->dst);	659	int dst = mac2id (pkt->dst);
518	int src = mac2id (pkt->src);	660	int src = mac2id (pkt->src);
519		661
520	if (src != THISNODE->id)	662	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	{	663	{
538	// unicast	664	slog (L_ERR, _("FATAL: tap packet not originating on current node received (if-up script not working properly?), exiting."));
539	if (dst != THISNODE->id)	665	exit (EXIT_FAILURE);
540	conns[dst - 1]->inject_data_packet (pkt);
541	}	666	}
		667
		668	if (dst == THISNODE->id)
		669	{
		670	slog (L_ERR, _("FATAL: tap packet destined for current node received, exiting."));
		671	exit (EXIT_FAILURE);
		672	}
		673
		674	if (dst > conns.size ())
		675	slog (L_ERR, _("tap packet for unknown node %d received, ignoring."), dst);
542	else	676	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);	677	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	}	678	}
555		679
556	delete pkt;	680	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	}	681	}
563	else	682	else
564	abort ();	683	abort ();
565	}	684	}
566		685
567	void	686	inline void
568	vpn::event_cb (time_watcher &w)	687	vpn::event_cb (ev::timer &w, int)
569	{	688	{
570	if (events)	689	if (events)
571	{	690	{
572	if (events & EVENT_SHUTDOWN)	691	if (events & EVENT_SHUTDOWN)
573	{	692	{
574	slog (L_INFO, _("preparing shutdown..."));	693	slog (L_INFO, _("preparing shutdown..."));
575		694
576	shutdown_all ();	695	shutdown_all ();
577
578	remove_pid (pidfilename);	696	remove_pid (conf.pidfilename);
579
580	slog (L_INFO, _("terminating"));	697	slog (L_INFO, _("exiting."));
581		698	exit (EXIT_SUCCESS);
582	exit (0);
583	}	699	}
584		700
585	if (events & EVENT_RECONNECT)	701	if (events & EVENT_RECONNECT)
586	{	702	{
587	slog (L_INFO, _("forced reconnect"));	703	slog (L_INFO, _("forced reconnect."));
588		704
589	reconnect_all ();	705	reconnect_all ();
590	}	706	}
591		707
592	events = 0;	708	events = 0;
593	}	709	}
594
595	w.at = TSTAMP_CANCEL;
596	}	710	}
597		711
598	void	712	void
599	vpn::shutdown_all ()	713	vpn::shutdown_all ()
600	{	714	{
610		724
611	conns.clear ();	725	conns.clear ();
612		726
613	connection_init ();	727	connection_init ();
614		728
615	for (configuration::node_vector::iterator i = conf.nodes.begin ();	729	for (configuration::node_vector::iterator i = conf.nodes.begin (); i != conf.nodes.end (); ++i)
616	i != conf.nodes.end (); ++i)	730	conns.push_back (new connection (this, *i));
617	{
618	connection *conn = new connection (this);
619		731
620	conn->conf = *i;	732	for (conns_vector::iterator c = conns.begin (); c != conns.end (); ++c)
621	conns.push_back (conn);
622
623	conn->establish_connection ();	733	(*c)->establish_connection ();
624	}
625	}	734	}
626		735
627	connection *vpn::find_router ()	736	bool vpn::can_direct (conf_node src, conf_node dst) const
628	{	737	{
629	u32 prio = 0;	738	return src != dst
		739	&& src->may_direct (dst)
		740	&& dst->may_direct (src)
		741	&& (((src->protocols & dst->protocols) && src->connectmode == conf_node::C_ALWAYS)
		742	\|\| (src->protocols & dst->connectable_protocols ()));
		743	}
		744
		745	// only works for indirect and routed connections: find a router
		746	// from THISNODE to dst
		747	connection vpn::find_router_for (const connection dst)
		748	{
630	connection *router = 0;	749	connection *router = 0;
631		750
		751	// first try to find a router with a direct connection
		752	{
		753	u32 prio = 1;
		754
		755	for (conns_vector::iterator i = conns.begin (); i != conns.end (); ++i)
		756	{
		757	connection c = i;
		758
		759	if (c->conf->routerprio > prio
		760	&& c->conf != THISNODE
		761	&& c != dst
		762	&& can_direct (c->conf, dst->conf))
		763	{
		764	if (c->ictx && c->octx)
		765	{
		766	prio = c->conf->routerprio;
		767	router = c;
		768	}
		769	else
		770	c->establish_connection ();
		771	}
		772	}
		773	}
		774
		775	if (router)
		776	return router;
		777
		778	// second try find the router with the highest priority higher than ours
		779	{
		780	u32 prio = 1;
		781
		782	for (conns_vector::iterator i = conns.begin (); i != conns.end (); ++i)
		783	{
		784	connection c = i;
		785
		786	if (c->conf->routerprio > prio
		787	&& c->conf->routerprio > THISNODE->routerprio
		788	&& c != dst
		789	&& c->conf != THISNODE)
		790	{
		791	if (c->ictx && c->octx)
		792	{
		793	prio = c->conf->routerprio;
		794	router = c;
		795	}
		796	else
		797	c->establish_connection ();
		798	}
		799	}
		800	}
		801	return router;
		802	}
		803
		804	void vpn::connection_established (connection *c)
		805	{
632	for (conns_vector::iterator i = conns.begin (); i != conns.end (); ++i)	806	for (conns_vector::iterator i = conns.begin (); i != conns.end (); ++i)
633	{	807	{
634	connection c = i;	808	connection o = i;
635		809
636	if (c->conf->routerprio > prio	810	if (!o->is_direct
637	&& c->connectmode == conf_node::C_ALWAYS	811	&& o->si.valid ()
638	&& c->conf != THISNODE	812	&& c->si != o->si
639	&& c->ictx && c->octx)	813	&& c == find_router_for (o))
640	{
641	prio = c->conf->routerprio;
642	router = c;
643	}	814	{
		815	slog (L_DEBUG, _("%s: can now route packets via %s, re-keying connection."),
		816	o->conf->nodename, c->conf->nodename);
		817	o->rekey ();
		818	}
644	}	819	}
645
646	return router;
647	}	820	}
648		821
649	void vpn::connect_request (int id)	822	void vpn::send_connect_request (connection *c)
650	{	823	{
651	connection *c = find_router ();	824	connection *r = find_router_for (c);
652		825
653	if (c)	826	if (r)
		827	{
		828	slog (L_TRACE, _("%s: no way to connect, sending mediated connection request via %s."),
		829	c->conf->nodename, r->conf->nodename);
654	c->connect_request (id);	830	r->send_connect_request (c->conf->id);
655	//else // does not work, because all others must connect to the same router	831	}
656	// // no router found, aggressively connect to all routers	832	else
657	// for (conns_vector::iterator i = conns.begin (); i != conns.end (); ++i)	833	slog (L_DEBUG, _("%s: no way to connect and no router found: unable to connect."),
658	// if ((*i)->conf->routerprio)	834	c->conf->nodename);
659	// (*i)->establish_connection ();
660	}	835	}
661		836
662	void	837	void
663	connection::dump_status ()	838	connection::dump_status ()
664	{	839	{
665	slog (L_NOTICE, _("node %s (id %d)"), conf->nodename, conf->id);	840	slog (L_NOTICE, _("node %s (id %d)"), conf->nodename, conf->id);
666	slog (L_NOTICE, _(" connectmode %d (%d) / sockaddr %s / minor %d"),	841	slog (L_NOTICE, _(" connectmode %d (%d) / sockaddr %s / minor %d"),
667	connectmode, conf->connectmode, (const char *)si, (int)prot_minor);	842	connectmode, conf->connectmode, (const char *)si, (int)prot_minor);
668	slog (L_NOTICE, _(" ictx/octx %08lx/%08lx / oseqno %d / retry_cnt %d"),	843	slog (L_NOTICE, _(" ictx/octx %08lx/%08lx / oseqno %d / retry_cnt %d"),
669	(long)ictx, (long)octx, (int)oseqno, (int)retry_cnt);	844	(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	}	845	}
673		846
674	void	847	void
675	vpn::dump_status ()	848	vpn::dump_status ()
676	{	849	{
677	slog (L_NOTICE, _("BEGIN status dump (%ld)"), (long)NOW);	850	slog (L_NOTICE, _("BEGIN status dump (%ld)"), (long)ev_now ());
678		851
679	for (conns_vector::iterator c = conns.begin (); c != conns.end (); ++c)	852	for (conns_vector::iterator c = conns.begin (); c != conns.end (); ++c)
680	(*c)->dump_status ();	853	(*c)->dump_status ();
681		854
682	slog (L_NOTICE, _("END status dump"));	855	slog (L_NOTICE, _("END status dump"));
683	}	856	}
684		857
685	vpn::vpn (void)	858	vpn::vpn (void)
686	: event(this, &vpn::event_cb)	859	{
		860	event .set<vpn, &vpn::event_cb > (this);
687	, udpv4_ev_watcher(this, &vpn::udpv4_ev)	861	udpv4_ev_watcher .set<vpn, &vpn::udpv4_ev > (this);
688	, ipv4_ev_watcher (this, &vpn::ipv4_ev)	862	ipv4_ev_watcher .set<vpn, &vpn::ipv4_ev > (this);
689	, tap_ev_watcher (this, &vpn::tap_ev)
690	#if ENABLE_TCP	863	#if ENABLE_TCP
691	, tcpv4_ev_watcher(this, &vpn::tcpv4_ev)	864	tcpv4_ev_watcher .set<vpn, &vpn::tcpv4_ev > (this);
692	#endif	865	#endif
693	{	866	#if ENABLE_ICMP
		867	icmpv4_ev_watcher.set<vpn, &vpn::icmpv4_ev> (this);
		868	#endif
		869	#if ENABLE_DNS
		870	dnsv4_ev_watcher .set<vpn, &vpn::dnsv4_ev > (this);
		871	#endif
		872	tap_ev_watcher .set<vpn, &vpn::tap_ev > (this);
694	}	873	}
695		874
696	vpn::~vpn ()	875	vpn::~vpn ()
697	{	876	{
698	}	877	}

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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 1.50 by pcg, Sun Aug 10 02:49:21 2008 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 1.50 by pcg, Sun Aug 10 02:49:21 2008 UTC