[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 1.52 by pcg, Sun Aug 10 22:18:58 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	// standard daemon practise...	139	fcntl (ipv4_fd, F_SETFL, O_NONBLOCK);
93	{	140	fcntl (ipv4_fd, F_SETFD, FD_CLOEXEC);
94	int oval = 1;
95	setsockopt (udpv4_fd, SOL_SOCKET, SO_REUSEADDR, &oval, sizeof oval);
96	}
97		141
98	sockinfo si (THISNODE, PROT_UDPv4);	142	#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	143	// this I really consider a linux bug. I am neither connected
108	// 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
109	// fragment for me sometimes.	145	// fragment for me sometimes.
110	{	146	{
111	int oval = IP_PMTUDISC_DONT;	147	int oval = IP_PMTUDISC_DONT;
112	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);
113	}	158	}
114	#endif
115		159
116	udpv4_ev_watcher.start (udpv4_fd, POLLIN);	160	ipv4_ev_watcher.start (ipv4_fd, EV_READ);
		161	++success;
117	}	162	}
		163	else
		164	THISNODE->protocols &= ~PROT_IPv4;
118		165
		166	udpv4_tos = -1;
119	ipv4_fd = -1;	167	udpv4_fd = -1;
120	if (THISNODE->protocols & PROT_IPv4)
121	{
122	ipv4_fd = socket (PF_INET, SOCK_RAW, ::conf.ip_proto);
123		168
		169	if (THISNODE->protocols & PROT_UDPv4 && THISNODE->udp_port)
		170	{
		171	udpv4_fd = socket (PF_INET, SOCK_DGRAM, IPPROTO_UDP);
		172
124	if (ipv4_fd < 0)	173	if (udpv4_fd < 0)
125	return -1;	174	return -1;
126		175
127	sockinfo si (THISNODE, PROT_IPv4);	176	fcntl (udpv4_fd, F_SETFL, O_NONBLOCK);
		177	fcntl (udpv4_fd, F_SETFD, FD_CLOEXEC);
128		178
129	if (bind (ipv4_fd, si.sav4 (), si.salenv4 ()))	179	// standard daemon practise...
130	{	180	{
131	slog (L_ERR, _("can't bind ipv4 socket on %s: %s"), (const char *)si, strerror (errno));	181	int oval = 1;
132	exit (1);	182	setsockopt (udpv4_fd, SOL_SOCKET, SO_REUSEADDR, &oval, sizeof oval);
133	}	183	}
134		184
135	#ifdef IP_MTU_DISCOVER	185	#if defined(SOL_IP) && defined(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
		267	fcntl (tcpv4_fd, F_SETFL, O_NONBLOCK);
		268	fcntl (tcpv4_fd, F_SETFD, FD_CLOEXEC);
		269
156	// standard daemon practise...	270	// standard daemon practise...
157	{	271	{
158	int oval = 1;	272	int oval = 1;
159	setsockopt (tcpv4_fd, SOL_SOCKET, SO_REUSEADDR, &oval, sizeof oval);	273	setsockopt (tcpv4_fd, SOL_SOCKET, SO_REUSEADDR, &oval, sizeof oval);
160	}	274	}
161		275
162	sockinfo si (THISNODE, PROT_TCPv4);	276	sockinfo si (THISNODE, PROT_TCPv4);
163		277
164	if (bind (tcpv4_fd, si.sav4 (), si.salenv4 ()))	278	if (bind (tcpv4_fd, si.sav4 (), si.salenv4 ()))
165	{	279	{
166	slog (L_ERR, _("can't bind tcpv4 on %s: %s"), (const char *)si, strerror (errno));	280	slog (L_ERR, _("can't bind tcpv4 on %s: %s, exiting."), (const char *)si, strerror (errno));
167	exit (1);	281	exit (EXIT_FAILURE);
168	}	282	}
169		283
170	if (listen (tcpv4_fd, 5))	284	if (listen (tcpv4_fd, 5))
171	{	285	{
172	slog (L_ERR, _("can't listen tcpv4 on %s: %s"), (const char *)si, strerror (errno));	286	slog (L_ERR, _("can't listen tcpv4 on %s: %s, exiting."), (const char *)si, strerror (errno));
173	exit (1);	287	exit (EXIT_FAILURE);
		288	}
		289
		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);
174	}	320	}
175
176	tcpv4_ev_watcher.start (tcpv4_fd, POLLIN);
177	}
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 (io_watcher &w, 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 (w.p->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
		578	inline void
287	vpn::ipv4_ev (io_watcher &w, short revents)	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 (w.p->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_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	}	622	}
396	}	623	}
		624	#endif
397		625
398	void	626	inline void
399	vpn::send_tcpv4_packet (vpn_packet *pkt, const sockinfo &si, int tos)	627	vpn::udpv4_ev (ev::io &w, int revents)
400	{	628	{
401	tcp_si_map::iterator info = tcp_si.find (&si);	629	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	}	630	{
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;	631	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;	632	struct sockaddr_in sa;
486	socklen_t sa_len = sizeof (sa);	633	socklen_t sa_len = sizeof (sa);
487	int len;	634	int len;
488		635
489	int fd = accept (w.p->fd, (sockaddr *)&sa, &sa_len);	636	len = recvfrom (w.fd, &((pkt)[0]), MAXSIZE, 0, (sockaddr )&sa, &sa_len);
490		637
491	if (fd >= 0)
492	{
493	fcntl (fd, F_SETFL, O_NONBLOCK);
494
495	sockinfo si(sa, PROT_TCPv4);	638	sockinfo si(sa, PROT_UDPv4);
496	tcp_connection i = new tcp_connection (fd, si, this);
497		639
498	slog (L_DEBUG, _("accepted tcp connection from %s\n"), (const char *)si);//D	640	if (len > 0)
499
500	tcp_si.insert (*i);
501	}	641	{
		642	pkt->len = len;
		643
		644	recv_vpn_packet (pkt, si);
		645	}
		646	else
		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
502	}	655	{
		656	slog (L_ERR,
		657	_("FATAL: unknown revents %08x in socket, exiting.\n"),
		658	revents);
		659	exit (EXIT_FAILURE);
		660	}
503	}	661	}
504		662
505	#endif	663	inline void
506
507	void
508	vpn::tap_ev (io_watcher &w, short revents)	664	vpn::tap_ev (ev::io &w, int revents)
509	{	665	{
510	if (revents & POLLIN)	666	if (revents & EV_READ)
511	{	667	{
512	/* process data */	668	/* process data */
513	tap_packet *pkt;	669	tap_packet *pkt;
514		670
515	pkt = tap->recv ();	671	pkt = tap->recv ();
516		672
		673	if (!pkt)
		674	return;
		675
		676	if (pkt->len > 14)
		677	{
517	int dst = mac2id (pkt->dst);	678	int dst = mac2id (pkt->dst);
518	int src = mac2id (pkt->src);	679	int src = mac2id (pkt->src);
519		680
520	if (src != THISNODE->id)	681	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	{	682	{
538	// unicast	683	slog (L_ERR, _("FATAL: tap packet not originating on current node received (if-up script not working properly?), exiting."));
539	if (dst != THISNODE->id)	684	exit (EXIT_FAILURE);
540	conns[dst - 1]->inject_data_packet (pkt);
541	}	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);
542	else	695	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);	696	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	}	697	}
555		698
556	delete pkt;	699	delete pkt;
557	}	700	}
558	else if (revents & (POLLHUP \| POLLERR))
559	{
560	slog (L_ERR, _("FATAL: POLLHUP or POLLERR on network device fd, terminating."));
561	exit (1);
562	}
563	else	701	else
564	abort ();	702	abort ();
565	}	703	}
566		704
567	void	705	inline void
568	vpn::event_cb (time_watcher &w)	706	vpn::event_cb (ev::timer &w, int)
569	{	707	{
570	if (events)	708	if (events)
571	{	709	{
572	if (events & EVENT_SHUTDOWN)	710	if (events & EVENT_SHUTDOWN)
573	{	711	{
574	slog (L_INFO, _("preparing shutdown..."));	712	slog (L_INFO, _("preparing shutdown..."));
575		713
576	shutdown_all ();	714	shutdown_all ();
577
578	remove_pid (pidfilename);	715	remove_pid (conf.pidfilename);
579
580	slog (L_INFO, _("terminating"));	716	slog (L_INFO, _("exiting."));
581		717	exit (EXIT_SUCCESS);
582	exit (0);
583	}	718	}
584		719
585	if (events & EVENT_RECONNECT)	720	if (events & EVENT_RECONNECT)
586	{	721	{
587	slog (L_INFO, _("forced reconnect"));	722	slog (L_INFO, _("forced reconnect."));
588		723
589	reconnect_all ();	724	reconnect_all ();
590	}	725	}
591		726
592	events = 0;	727	events = 0;
593	}	728	}
594
595	w.at = TSTAMP_CANCEL;
596	}	729	}
597		730
598	void	731	void
599	vpn::shutdown_all ()	732	vpn::shutdown_all ()
600	{	733	{
610		743
611	conns.clear ();	744	conns.clear ();
612		745
613	connection_init ();	746	connection_init ();
614		747
615	for (configuration::node_vector::iterator i = conf.nodes.begin ();	748	for (configuration::node_vector::iterator i = conf.nodes.begin (); i != conf.nodes.end (); ++i)
616	i != conf.nodes.end (); ++i)	749	conns.push_back (new connection (this, *i));
617	{
618	connection *conn = new connection (this);
619		750
620	conn->conf = *i;	751	for (conns_vector::iterator c = conns.begin (); c != conns.end (); ++c)
621	conns.push_back (conn);
622
623	conn->establish_connection ();	752	(*c)->establish_connection ();
624	}
625	}	753	}
626		754
627	connection *vpn::find_router ()	755	bool vpn::can_direct (conf_node src, conf_node dst) const
628	{	756	{
629	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	{
630	connection *router = 0;	768	connection *router = 0;
631		769
		770	// first try to find a router with a direct connection, route there
		771	// regardless of any other considerations.
		772	{
		773	u32 prio = 1;
		774
		775	for (conns_vector::iterator i = conns.begin (); i != conns.end (); ++i)
		776	{
		777	connection c = i;
		778
		779	if (c->conf->routerprio > prio
		780	&& c->conf != THISNODE
		781	&& can_direct (c->conf, dst->conf)
		782	&& c->ictx && c->octx)
		783	{
		784	prio = c->conf->routerprio;
		785	router = c;
		786	}
		787	}
		788	}
		789
		790	if (router)
		791	return router;
		792
		793	// second try find the router with the highest priority, higher than ours
		794	{
		795	u32 prio = THISNODE->routerprio ? THISNODE->routerprio : 1;
		796
		797	for (conns_vector::iterator i = conns.begin (); i != conns.end (); ++i)
		798	{
		799	connection c = i;
		800
		801	if (c->conf->routerprio > prio
		802	&& c != dst
		803	&& c->conf != THISNODE
		804	&& c->ictx && c->octx)
		805	{
		806	prio = c->conf->routerprio;
		807	router = c;
		808	}
		809	}
		810	}
		811
		812	return router;
		813	}
		814
		815	void vpn::connection_established (connection *c)
		816	{
632	for (conns_vector::iterator i = conns.begin (); i != conns.end (); ++i)	817	for (conns_vector::iterator i = conns.begin (); i != conns.end (); ++i)
633	{	818	{
634	connection c = i;	819	connection o = i;
635		820
636	if (c->conf->routerprio > prio	821	if (!o->is_direct
637	&& c->connectmode == conf_node::C_ALWAYS	822	&& o->si.valid ()
638	&& c->conf != THISNODE	823	&& c->si != o->si
639	&& c->ictx && c->octx)	824	&& c == find_router_for (o))
640	{
641	prio = c->conf->routerprio;
642	router = c;
643	}	825	{
		826	slog (L_DEBUG, _("%s: can now route packets via %s, re-keying connection."),
		827	o->conf->nodename, c->conf->nodename);
		828	o->rekey ();
		829	}
644	}	830	}
645
646	return router;
647	}	831	}
648		832
649	void vpn::connect_request (int id)	833	void vpn::send_connect_request (connection *c)
650	{	834	{
651	connection *c = find_router ();	835	connection *r = find_router_for (c);
652		836
653	if (c)	837	if (r)
		838	{
		839	slog (L_TRACE, _("%s: no way to connect, sending mediated connection request via %s."),
		840	c->conf->nodename, r->conf->nodename);
654	c->connect_request (id);	841	r->send_connect_request (c->conf->id);
655	//else // does not work, because all others must connect to the same router	842	}
656	// // no router found, aggressively connect to all routers	843	else
657	// for (conns_vector::iterator i = conns.begin (); i != conns.end (); ++i)	844	slog (L_DEBUG, _("%s: no way to connect and no router found: unable to connect."),
658	// if ((*i)->conf->routerprio)	845	c->conf->nodename);
659	// (*i)->establish_connection ();
660	}	846	}
661		847
662	void	848	void
663	connection::dump_status ()	849	connection::dump_status ()
664	{	850	{
665	slog (L_NOTICE, _("node %s (id %d)"), conf->nodename, conf->id);	851	slog (L_NOTICE, _("node %s (id %d)"), conf->nodename, conf->id);
666	slog (L_NOTICE, _(" connectmode %d (%d) / sockaddr %s / minor %d"),	852	slog (L_NOTICE, _(" connectmode %d (%d) / sockaddr %s / minor %d"),
667	connectmode, conf->connectmode, (const char *)si, (int)prot_minor);	853	connectmode, conf->connectmode, (const char *)si, (int)prot_minor);
668	slog (L_NOTICE, _(" ictx/octx %08lx/%08lx / oseqno %d / retry_cnt %d"),	854	slog (L_NOTICE, _(" ictx/octx %08lx/%08lx / oseqno %d / retry_cnt %d"),
669	(long)ictx, (long)octx, (int)oseqno, (int)retry_cnt);	855	(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	}	856	}
673		857
674	void	858	void
675	vpn::dump_status ()	859	vpn::dump_status ()
676	{	860	{
677	slog (L_NOTICE, _("BEGIN status dump (%ld)"), (long)NOW);	861	slog (L_NOTICE, _("BEGIN status dump (%ld)"), (long)ev_now ());
678		862
679	for (conns_vector::iterator c = conns.begin (); c != conns.end (); ++c)	863	for (conns_vector::iterator c = conns.begin (); c != conns.end (); ++c)
680	(*c)->dump_status ();	864	(*c)->dump_status ();
681		865
682	slog (L_NOTICE, _("END status dump"));	866	slog (L_NOTICE, _("END status dump"));
683	}	867	}
684		868
685	vpn::vpn (void)	869	vpn::vpn (void)
686	: event(this, &vpn::event_cb)	870	{
		871	event .set<vpn, &vpn::event_cb > (this);
687	, udpv4_ev_watcher(this, &vpn::udpv4_ev)	872	udpv4_ev_watcher .set<vpn, &vpn::udpv4_ev > (this);
688	, ipv4_ev_watcher (this, &vpn::ipv4_ev)	873	ipv4_ev_watcher .set<vpn, &vpn::ipv4_ev > (this);
689	, tap_ev_watcher (this, &vpn::tap_ev)
690	#if ENABLE_TCP	874	#if ENABLE_TCP
691	, tcpv4_ev_watcher(this, &vpn::tcpv4_ev)	875	tcpv4_ev_watcher .set<vpn, &vpn::tcpv4_ev > (this);
692	#endif	876	#endif
693	{	877	#if ENABLE_ICMP
		878	icmpv4_ev_watcher.set<vpn, &vpn::icmpv4_ev> (this);
		879	#endif
		880	#if ENABLE_DNS
		881	dnsv4_ev_watcher .set<vpn, &vpn::dnsv4_ev > (this);
		882	#endif
		883	tap_ev_watcher .set<vpn, &vpn::tap_ev > (this);
694	}	884	}
695		885
696	vpn::~vpn ()	886	vpn::~vpn ()
697	{	887	{
698	}	888	}

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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 1.52 by pcg, Sun Aug 10 22:18:58 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 1.52 by pcg, Sun Aug 10 22:18:58 2008 UTC