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

Comparing gvpe/src/vpn.C (file contents):
Revision 1.14 by pcg, Tue Oct 14 03:22:09 2003 UTC vs.
Revision 1.69 by root, Sat Sep 5 17:40:22 2015 UTC

…		…
1	/*	1	/*
2	vpn.C -- handle the protocol, encryption, handshaking etc.	2	vpn.C -- handle the protocol, encryption, handshaking etc.
		3	Copyright (C) 2003-2008,2010,2011,2013 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>
		43	#include <sys/stat.h>
31	#include <errno.h>	44	#include <errno.h>
32	#include <time.h>	45	#include <time.h>
33	#include <unistd.h>	46	#include <unistd.h>
34	#include <fcntl.h>	47	#include <fcntl.h>
35	#include <sys/socket.h>	48	#include <sys/socket.h>
36	#include <netinet/in.h>	49
37	#include <arpa/inet.h>	50	#include "netcompat.h"
38	#include <net/if.h>
39	#ifdef HAVE_NETINET_IN_SYSTM_H
40	# include <netinet/in_systm.h>
41	#endif
42	#ifdef HAVE_NETINET_IP_H
43	# include <netinet/ip.h>
44	#endif
45	#ifdef HAVE_NETINET_TCP_H
46	# include <netinet/tcp.h>
47	#endif
48	#if ENABLE_ICMP
49	# include <netinet/ip_icmp.h>
50	#endif
51		51
52	#include "pidfile.h"	52	#include "pidfile.h"
53		53
54	#include "connection.h"	54	#include "connection.h"
55	#include "util.h"	55	#include "util.h"
56	#include "vpn.h"	56	#include "vpn.h"
57		57
58	#if !defined(SOL_IP) && defined(IPPROTO_IP)	58	using namespace std;
59	# define SOL_IP IPPROTO_IP	59
60	#endif	60	vpn network; // THE vpn (bad design...)
61		61
62	/////////////////////////////////////////////////////////////////////////////	62	/////////////////////////////////////////////////////////////////////////////
63		63
64	const char *vpn::script_if_up ()	64	// hopefully temporary workaround for rare buffer full conditions
		65	// if it happens, usually instantly retrying or retrying ~5ms later
		66	// is good enough with current network technologies/kernels
		67
		68	static ssize_t
		69	xsendto (int fd, const void *buf, size_t len, int flags,
		70	const struct sockaddr *sa, socklen_t salen)
		71	{
		72	ssize_t res;
		73
		74	for (int retry = 0; retry <= 13; ++retry) // ~100ms
		75	{
		76	res = sendto (fd, buf, len, flags, sa, salen);
		77
		78	if (res >= 0 \|\| errno != ENOBUFS)
		79	break;
		80
		81	struct timespec ts = { 0, 1000 * retry };
		82	nanosleep (&ts, 0);
		83	}
		84
		85	return res;
		86	}
		87
		88	/////////////////////////////////////////////////////////////////////////////
		89
		90	static void inline
		91	set_tos (int fd, int &tos_prev, int tos)
		92	{
		93	#if defined(SOL_IP) && defined(IP_TOS)
		94	if (tos_prev == tos)
		95	return;
		96
		97	tos_prev = tos;
		98	setsockopt (fd, SOL_IP, IP_TOS, &tos, sizeof tos);
		99	#endif
		100	}
		101
		102	void
		103	vpn::script_init_env ()
65	{	104	{
66	// the tunnel device mtu should be the physical mtu - overhead	105	// the tunnel device mtu should be the physical mtu - overhead
67	// the tricky part is rounding to the cipher key blocksize	106	// the tricky part is rounding to the cipher key blocksize
68	int mtu = conf.mtu - ETH_OVERHEAD - VPE_OVERHEAD - MAX_OVERHEAD;	107	int mtu = conf.mtu - ETH_OVERHEAD - VPE_OVERHEAD - MAX_OVERHEAD;
69	mtu += ETH_OVERHEAD - 6 - 6; // now we have the data portion	108	mtu += ETH_OVERHEAD - 6 - 6; // now we have the data portion
70	mtu -= mtu % EVP_CIPHER_block_size (CIPHER); // round	109	mtu -= mtu % BLOCK_SIZE (CIPHER); // round
71	mtu -= ETH_OVERHEAD - 6 - 6; // and get interface mtu again	110	mtu -= ETH_OVERHEAD - 6 - 6; // and get interface mtu again
72		111
73	char *env;	112	char *env;
74	asprintf (&env, "CONFBASE=%s", confbase);	113	asprintf (&env, "CONFBASE=%s", confbase); putenv (env);
75	putenv (env);
76	asprintf (&env, "NODENAME=%s", THISNODE->nodename);
77	putenv (env);
78	asprintf (&env, "NODEID=%d", THISNODE->id);
79	putenv (env);
80	asprintf (&env, "IFNAME=%s", tap->interface ());	114	asprintf (&env, "IFNAME=%s", tap->interface ()); putenv (env);
81	putenv (env);	115	asprintf (&env, "IFTYPE=%s", IFTYPE); putenv (env);
		116	asprintf (&env, "IFSUBTYPE=%s", IFSUBTYPE); putenv (env);
82	asprintf (&env, "MTU=%d", mtu);	117	asprintf (&env, "MTU=%d", mtu); putenv (env);
83	putenv (env);	118	asprintf (&env, "NODES=%d", conns.size ()); putenv (env);
84	asprintf (&env, "MAC=%02x:%02x:%02x:%02x:%02x:%02x",	119	asprintf (&env, "NODEID=%d", THISNODE->id); putenv (env);
85	0xfe, 0xfd, 0x80, 0x00, THISNODE->id >> 8,
86	THISNODE->id & 0xff);
87	putenv (env);
88		120
89	return ::conf.script_if_up ? ::conf.script_if_up : "if-up";	121	conns [THISNODE->id - 1]->script_init_env ("");
		122
		123	for (conns_vector::iterator c = conns.begin (); c != conns.end (); ++c)
		124	{
		125	char ext[16];
		126	snprintf (ext, 16, "_%d", (*c)->conf->id);
		127	(*c)->script_init_env (ext);
		128	}
		129	}
		130
		131	inline const char *
		132	vpn::script_if_init ()
		133	{
		134	script_init_env ();
		135
		136	return tap->if_up ();
		137	}
		138
		139	inline const char *
		140	vpn::script_if_up ()
		141	{
		142	script_init_env ();
		143
		144	return conf.config_filename (::conf.script_if_up, "if-up");
		145	}
		146
		147	int
		148	vpn::setup_socket (u8 prot, int family, int type, int proto)
		149	{
		150	int fd = socket (family, type, proto);
		151
		152	if (fd < 0)
		153	{
		154	slog (L_ERR, _("unable to create %s socket: %s."), strprotocol (prot), strerror (errno));
		155	return fd;
		156	}
		157
		158	fcntl (fd, F_SETFL, O_NONBLOCK);
		159	fcntl (fd, F_SETFD, FD_CLOEXEC);
		160
		161	#ifdef SO_MARK
		162	if (::conf.nfmark)
		163	if (setsockopt (fd, SOL_SOCKET, SO_MARK, &::conf.nfmark, sizeof ::conf.nfmark))
		164	slog (L_WARN, _("unable to set nfmark on %s socket: %s"), strprotocol (prot), strerror (errno));
		165	#endif
		166
		167	return fd;
90	}	168	}
91		169
92	int	170	int
93	vpn::setup ()	171	vpn::setup ()
94	{	172	{
		173	int success = 0;
		174
		175	ipv4_tos = -1;
95	ipv4_fd = -1;	176	ipv4_fd = -1;
96		177
97	if (THISNODE->protocols & PROT_IPv4 && ::conf.ip_proto)	178	if (THISNODE->protocols & PROT_IPv4 && ::conf.ip_proto)
98	{	179	{
99	ipv4_fd = socket (PF_INET, SOCK_RAW, ::conf.ip_proto);	180	ipv4_fd = setup_socket (PROT_IPv4, PF_INET, SOCK_RAW, ::conf.ip_proto);
100		181
101	if (ipv4_fd < 0)	182	if (ipv4_fd < 0)
102	return -1;	183	return -1;
103
104	fcntl (ipv4_fd, F_SETFL, O_NONBLOCK);
105		184
106	#if defined(SOL_IP) && defined(IP_MTU_DISCOVER)	185	#if defined(SOL_IP) && defined(IP_MTU_DISCOVER)
107	// this I really consider a linux bug. I am neither connected	186	// this I really consider a linux bug. I am neither connected
108	// 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
109	// fragment for me sometimes.	188	// fragment for me sometimes.
115		194
116	sockinfo si (THISNODE, PROT_IPv4);	195	sockinfo si (THISNODE, PROT_IPv4);
117		196
118	if (bind (ipv4_fd, si.sav4 (), si.salenv4 ()))	197	if (bind (ipv4_fd, si.sav4 (), si.salenv4 ()))
119	{	198	{
120	slog (L_ERR, _("can't bind ipv4 socket on %s: %s"), (const char *)si, strerror (errno));	199	slog (L_ERR, _("can't bind ipv4 socket on %s: %s, exiting."), (const char *)si, strerror (errno));
121	exit (1);	200	return -1;
122	}	201	}
123		202
124	ipv4_ev_watcher.start (ipv4_fd, POLLIN);	203	ipv4_ev_watcher.start (ipv4_fd, EV_READ);
		204	++success;
125	}	205	}
		206	else
		207	THISNODE->protocols &= ~PROT_IPv4;
126		208
		209	udpv4_tos = -1;
127	udpv4_fd = -1;	210	udpv4_fd = -1;
128		211
129	if (THISNODE->protocols & PROT_UDPv4 && THISNODE->udp_port)	212	if (THISNODE->protocols & PROT_UDPv4 && THISNODE->udp_port)
130	{	213	{
131	udpv4_fd = socket (PF_INET, SOCK_DGRAM, IPPROTO_UDP);	214	udpv4_fd = setup_socket (PROT_UDPv4, PF_INET, SOCK_DGRAM, IPPROTO_UDP);
132		215
133	if (udpv4_fd < 0)	216	if (udpv4_fd < 0)
134	return -1;	217	return -1;
135
136	fcntl (udpv4_fd, F_SETFL, O_NONBLOCK);
137		218
138	// standard daemon practise...	219	// standard daemon practise...
139	{	220	{
140	int oval = 1;	221	int oval = 1;
141	setsockopt (udpv4_fd, SOL_SOCKET, SO_REUSEADDR, &oval, sizeof oval);	222	setsockopt (udpv4_fd, SOL_SOCKET, SO_REUSEADDR, &oval, sizeof oval);
…		…
153		234
154	sockinfo si (THISNODE, PROT_UDPv4);	235	sockinfo si (THISNODE, PROT_UDPv4);
155		236
156	if (bind (udpv4_fd, si.sav4 (), si.salenv4 ()))	237	if (bind (udpv4_fd, si.sav4 (), si.salenv4 ()))
157	{	238	{
158	slog (L_ERR, _("can't bind udpv4 on %s: %s"), (const char *)si, strerror (errno));	239	slog (L_ERR, _("can't bind udpv4 on %s: %s, exiting."), (const char *)si, strerror (errno));
159	exit (1);	240	return -1;
160	}	241	}
161		242
162	udpv4_ev_watcher.start (udpv4_fd, POLLIN);	243	udpv4_ev_watcher.start (udpv4_fd, EV_READ);
		244	++success;
163	}	245	}
		246	else
		247	THISNODE->protocols &= ~PROT_UDPv4;
164		248
		249	icmpv4_tos = -1;
165	icmpv4_fd = -1;	250	icmpv4_fd = -1;
166		251
167	#if ENABLE_ICMP	252	#if ENABLE_ICMP
168	if (THISNODE->protocols & PROT_ICMPv4)	253	if (THISNODE->protocols & PROT_ICMPv4)
169	{	254	{
170	icmpv4_fd = socket (PF_INET, SOCK_RAW, IPPROTO_ICMP);	255	icmpv4_fd = setup_socket (PROT_ICMPv4, PF_INET, SOCK_RAW, IPPROTO_ICMP);
171		256
172	if (icmpv4_fd < 0)	257	if (icmpv4_fd < 0)
173	return -1;	258	return -1;
174
175	fcntl (icmpv4_fd, F_SETFL, O_NONBLOCK);
176		259
177	#ifdef ICMP_FILTER	260	#ifdef ICMP_FILTER
178	{	261	{
179	icmp_filter oval;	262	icmp_filter oval;
180	oval.data = 0xffffffff;	263	oval.data = 0xffffffff;
…		…
189	// this I really consider a linux bug. I am neither connected	272	// this I really consider a linux bug. I am neither connected
190	// nor do I fragment myself. Linux still sets DF and doesn't	273	// nor do I fragment myself. Linux still sets DF and doesn't
191	// fragment for me sometimes.	274	// fragment for me sometimes.
192	{	275	{
193	int oval = IP_PMTUDISC_DONT;	276	int oval = IP_PMTUDISC_DONT;
194	setsockopt (udpv4_fd, SOL_IP, IP_MTU_DISCOVER, &oval, sizeof oval);	277	setsockopt (icmpv4_fd, SOL_IP, IP_MTU_DISCOVER, &oval, sizeof oval);
195	}	278	}
196	#endif	279	#endif
197		280
198	sockinfo si (THISNODE, PROT_ICMPv4);	281	sockinfo si (THISNODE, PROT_ICMPv4);
199		282
200	if (bind (icmpv4_fd, si.sav4 (), si.salenv4 ()))	283	if (bind (icmpv4_fd, si.sav4 (), si.salenv4 ()))
201	{	284	{
202	slog (L_ERR, _("can't bind icmpv4 on %s: %s"), (const char *)si, strerror (errno));	285	slog (L_ERR, _("can't bind icmpv4 on %s: %s, exiting."), (const char *)si, strerror (errno));
203	exit (1);	286	return -1;
204	}	287	}
205		288
206	icmpv4_ev_watcher.start (icmpv4_fd, POLLIN);	289	icmpv4_ev_watcher.start (icmpv4_fd, EV_READ);
		290	++success;
207	}	291	}
208	#endif	292	#endif
209		293
210	tcpv4_fd = -1;	294	tcpv4_fd = -1;
211		295
212	#if ENABLE_TCP	296	#if ENABLE_TCP
213	if (THISNODE->protocols & PROT_TCPv4 && THISNODE->tcp_port)	297	if (THISNODE->protocols & PROT_TCPv4 && THISNODE->tcp_port)
214	{	298	{
215	tcpv4_fd = socket (PF_INET, SOCK_STREAM, IPPROTO_TCP);	299	tcpv4_fd = setup_socket (PROT_TCPv4, PF_INET, SOCK_STREAM, IPPROTO_TCP);
216		300
217	if (tcpv4_fd < 0)	301	if (tcpv4_fd < 0)
218	return -1;	302	return -1;
219		303
220	fcntl (tcpv4_fd, F_SETFL, O_NONBLOCK);
221
222	// standard daemon practise...	304	// standard daemon practise...
223	{	305	{
224	int oval = 1;	306	int oval = 1;
225	setsockopt (tcpv4_fd, SOL_SOCKET, SO_REUSEADDR, &oval, sizeof oval);	307	setsockopt (tcpv4_fd, SOL_SOCKET, SO_REUSEADDR, &oval, sizeof oval);
226	}	308	}
227		309
228	sockinfo si (THISNODE, PROT_TCPv4);	310	sockinfo si (THISNODE, PROT_TCPv4);
229		311
230	if (bind (tcpv4_fd, si.sav4 (), si.salenv4 ()))	312	if (bind (tcpv4_fd, si.sav4 (), si.salenv4 ()))
231	{	313	{
232	slog (L_ERR, _("can't bind tcpv4 on %s: %s"), (const char *)si, strerror (errno));	314	slog (L_ERR, _("can't bind tcpv4 on %s: %s, exiting."), (const char *)si, strerror (errno));
233	exit (1);	315	return -1;
234	}	316	}
235		317
236	if (listen (tcpv4_fd, 5))	318	if (listen (tcpv4_fd, 5))
237	{	319	{
238	slog (L_ERR, _("can't listen tcpv4 on %s: %s"), (const char *)si, strerror (errno));	320	slog (L_ERR, _("can't listen tcpv4 on %s: %s, exiting."), (const char *)si, strerror (errno));
239	exit (1);	321	return -1;
		322	}
		323
		324	tcpv4_ev_watcher.start (tcpv4_fd, EV_READ);
		325	++success;
		326	}
		327	else
		328	THISNODE->protocols &= ~PROT_TCPv4;
		329	#endif
		330
		331	dnsv4_tos = -1;
		332	dnsv4_fd = -1;
		333
		334	#if ENABLE_DNS
		335	if (THISNODE->protocols & PROT_DNSv4)
		336	{
		337	dns_forwarder.set (::conf.dns_forw_host, ::conf.dns_forw_port, PROT_DNSv4);
		338
		339	dnsv4_fd = setup_socket (PROT_DNSv4, PF_INET, SOCK_DGRAM, IPPROTO_UDP);
		340
		341	if (dnsv4_fd < 0)
		342	return -1;
		343
		344	# if defined(SOL_IP) && defined(IP_MTU_DISCOVER)
		345	// this I really consider a linux bug. I am neither connected
		346	// nor do I fragment myself. Linux still sets DF and doesn't
		347	// fragment for me sometimes.
		348	{
		349	int oval = IP_PMTUDISC_DONT;
		350	setsockopt (dnsv4_fd, SOL_IP, IP_MTU_DISCOVER, &oval, sizeof oval);
240	}	351	}
241
242	tcpv4_ev_watcher.start (tcpv4_fd, POLLIN);
243	}
244	#endif	352	# endif
		353
		354	// standard daemon practise...
		355	{
		356	int oval = 1;
		357	setsockopt (dnsv4_fd, SOL_SOCKET, SO_REUSEADDR, &oval, sizeof oval);
		358	}
		359
		360	sockinfo si (THISNODE->dns_hostname,
		361	THISNODE->dns_hostname ? THISNODE->dns_port : 0,
		362	PROT_DNSv4);
		363
		364	if (bind (dnsv4_fd, si.sav4 (), si.salenv4 ()))
		365	{
		366	slog (L_ERR, _("can't bind dnsv4 on %s: %s, exiting."), (const char *)si, strerror (errno));
		367	return -1;
		368	}
		369
		370	dnsv4_ev_watcher.start (dnsv4_fd, EV_READ);
		371	++success;
		372	}
		373	#endif
		374
		375	/////////////////////////////////////////////////////////////////////////////
		376
		377	if (!success)
		378	{
		379	slog (L_ERR, _("no protocols enabled."));
		380	return -1;
		381	}
		382
		383	reconnect_all ();
		384
		385	/////////////////////////////////////////////////////////////////////////////
245		386
246	tap = new tap_device ();	387	tap = new tap_device ();
247	if (!tap) //D this, of course, never catches	388	if (!tap) //D this, of course, never catches
248	{	389	{
249	slog (L_ERR, _("cannot create network interface '%s'"), conf.ifname);	390	slog (L_ERR, _("cannot create network interface '%s'."), conf.ifname);
250	exit (1);	391	return -1;
251	}	392	}
252		393
253	run_script (run_script_cb (this, &vpn::script_if_up), true);	394	fcntl (tap->fd, F_SETFD, FD_CLOEXEC);
254		395
		396	run_script_cb cb;
		397	cb.set<vpn, &vpn::script_if_init> (this);
		398
		399	if (tap->if_up () &&
		400	!run_script (cb, true))
		401	{
		402	slog (L_ERR, _("interface initialization command '%s' failed."),
		403	tap->if_up ());
		404	return -1;
		405	}
		406
		407	cb.set<vpn, &vpn::script_if_up> (this);
		408	if (!run_script (cb, true))
		409	{
		410	slog (L_ERR, _("if-up command execution failed."));
		411	return -1;
		412	}
		413
255	tap_ev_watcher.start (tap->fd, POLLIN);	414	tap_ev_watcher.start (tap->fd, EV_READ);
256
257	reconnect_all ();
258		415
259	return 0;	416	return 0;
260	}	417	}
261		418
262	// send a vpn packet out to other hosts
263	bool	419	bool
264	vpn::send_vpn_packet (vpn_packet *pkt, const sockinfo &si, int tos)	420	vpn::drop_privileges ()
265	{	421	{
266	switch (si.prot)	422	if (::conf.change_root)
		423	{
		424	if (!strcmp (::conf.change_root, "/"))
		425	{
		426	char dir [L_tmpnam];
		427	if (!tmpnam (dir))
		428	{
		429	slog (L_CRIT, _("unable to create anonymous root path."));
		430	return false;
		431	}
		432
		433	if (mkdir (dir, 0700))
		434	{
		435	slog (L_CRIT, _("unable to create anonymous root directory."));
		436	return false;
		437	}
		438
		439	if (chdir (dir))
		440	{
		441	slog (L_CRIT, _("unable to change to anonymous root directory."));
		442	return false;
		443	}
		444
		445	if (rmdir (dir))
		446	slog (L_ERR, _("unable to remove anonymous root directory, continuing."));
		447	}
		448	else
		449	{
		450	if (chdir (::conf.change_root))
		451	{
		452	slog (L_CRIT, _("%s: unable to change to specified root directory."), ::conf.change_root);
		453	return false;
		454	}
		455	}
		456
		457	if (chroot ("."))
		458	{
		459	slog (L_CRIT, _("unable to set new root directory."));
		460	return false;
		461	}
		462
		463	if (chdir ("/"))
		464	{
		465	slog (L_CRIT, _("unable to set cwd to new root directory."));
		466	return false;
		467	}
		468	}
		469
		470	if (::conf.change_gid)
		471	if (setgid (::conf.change_gid))
267	{	472	{
268	case PROT_IPv4:	473	slog (L_CRIT, _("unable to change group id to %d."), ::conf.change_gid);
269	return send_ipv4_packet (pkt, si, tos);
270
271	case PROT_UDPv4:
272	return send_udpv4_packet (pkt, si, tos);
273
274	#if ENABLE_TCP
275	case PROT_TCPv4:
276	return send_tcpv4_packet (pkt, si, tos);
277	#endif
278
279	#if ENABLE_ICMP
280	case PROT_ICMPv4:
281	return send_icmpv4_packet (pkt, si, tos);
282	#endif
283
284	default:
285	slog (L_CRIT, _("%s: FATAL: trying to send packet with unsupported protocol"), (const char *)si);
286	return false;	474	return false;
287	}	475	}
		476
		477	if (::conf.change_uid)
		478	if (setuid (::conf.change_uid))
		479	{
		480	slog (L_CRIT, _("unable to change user id to %d."), ::conf.change_uid);
		481	return false;
		482	}
		483
		484	return true;
288	}	485	}
289		486
290	bool	487	bool
291	vpn::send_ipv4_packet (vpn_packet *pkt, const sockinfo &si, int tos)	488	vpn::send_ipv4_packet (vpn_packet *pkt, const sockinfo &si, int tos)
292	{	489	{
293	#if defined(SOL_IP) && defined(IP_TOS)	490	set_tos (ipv4_fd, ipv4_tos, tos);
294	setsockopt (ipv4_fd, SOL_IP, IP_TOS, &tos, sizeof tos);
295	#endif
296	sendto (ipv4_fd, &((*pkt)[0]), pkt->len, 0, si.sav4 (), si.salenv4 ());	491	xsendto (ipv4_fd, &((*pkt)[0]), pkt->len, 0, si.sav4 (), si.salenv4 ());
297		492
298	return true;	493	return true;
299	}	494	}
300		495
301	static u16	496	static u16
…		…
320		515
321	return ~sum;	516	return ~sum;
322	}	517	}
323		518
324	#if ENABLE_ICMP	519	#if ENABLE_ICMP
325	struct icmp_header {
326	u8 type;
327	u8 code;
328	u16 checksum;
329	union {
330	struct {
331	u16 id;
332	u16 sequence;
333	} echo;
334	u32 gateway;
335	struct {
336	u16 unused;
337	u16 mtu;
338	} frag;
339	} un;
340	};
341
342	bool	520	bool
343	vpn::send_icmpv4_packet (vpn_packet *pkt, const sockinfo &si, int tos)	521	vpn::send_icmpv4_packet (vpn_packet *pkt, const sockinfo &si, int tos)
344	{	522	{
345	#if defined(SOL_IP) && defined(IP_TOS)
346	setsockopt (icmpv4_fd, SOL_IP, IP_TOS, &tos, sizeof tos);
347	#endif
348
349	pkt->unshift_hdr (4);	523	pkt->unshift_hdr (4);
350		524
351	icmp_header hdr = (icmp_header )&((*pkt)[0]);	525	icmp_header hdr = (icmp_header )&((*pkt)[0]);
352	hdr->type = ::conf.icmp_type;	526	hdr->type = ::conf.icmp_type;
353	hdr->code = 255;	527	hdr->code = 255;
354	hdr->checksum = 0;	528	hdr->checksum = 0;
355	hdr->checksum = ipv4_checksum ((u16 *)hdr, pkt->len);	529	hdr->checksum = ipv4_checksum ((u16 *)hdr, pkt->len);
356		530
		531	set_tos (icmpv4_fd, icmpv4_tos, tos);
357	sendto (icmpv4_fd, &((*pkt)[0]), pkt->len, 0, si.sav4 (), si.salenv4 ());	532	xsendto (icmpv4_fd, &((*pkt)[0]), pkt->len, 0, si.sav4 (), si.salenv4 ());
358		533
359	return true;	534	return true;
360	}	535	}
361	#endif	536	#endif
362		537
363	bool	538	bool
364	vpn::send_udpv4_packet (vpn_packet *pkt, const sockinfo &si, int tos)	539	vpn::send_udpv4_packet (vpn_packet *pkt, const sockinfo &si, int tos)
365	{	540	{
366	#if defined(SOL_IP) && defined(IP_TOS)	541	set_tos (udpv4_fd, udpv4_tos, tos);
367	setsockopt (udpv4_fd, SOL_IP, IP_TOS, &tos, sizeof tos);
368	#endif
369	sendto (udpv4_fd, &((*pkt)[0]), pkt->len, 0, si.sav4 (), si.salenv4 ());	542	xsendto (udpv4_fd, &((*pkt)[0]), pkt->len, 0, si.sav4 (), si.salenv4 ());
370		543
371	return true;	544	return true;
		545	}
		546
		547	void
		548	vpn::inject_data_packet (tap_packet *pkt, int dst)
		549	{
		550	if (dst)
		551	{
		552	// unicast
		553	if (dst != THISNODE->id)
		554	conns[dst - 1]->inject_data_packet (pkt);
		555	}
		556	else
		557	{
		558	// broadcast, this is ugly, but due to the security policy
		559	// we have to connect to all hosts...
		560	for (conns_vector::iterator c = conns.begin (); c != conns.end (); ++c)
		561	if ((*c)->conf != THISNODE)
		562	(*c)->inject_data_packet (pkt);
		563	}
372	}	564	}
373		565
374	void	566	void
375	vpn::recv_vpn_packet (vpn_packet *pkt, const sockinfo &rsi)	567	vpn::recv_vpn_packet (vpn_packet *pkt, const sockinfo &rsi)
376	{	568	{
377	unsigned int src = pkt->src ();	569	unsigned int src = pkt->src ();
378	unsigned int dst = pkt->dst ();	570	unsigned int dst = pkt->dst ();
379		571
380	slog (L_NOISE, _("<<?/%s received possible vpn packet type %d from %d to %d, length %d"),	572	slog (L_NOISE, _("<<?/%s received possible vpn packet type %d from %d to %d, length %d."),
381	(const char *)rsi, pkt->typ (), pkt->src (), pkt->dst (), pkt->len);	573	(const char *)rsi, pkt->typ (), pkt->src (), pkt->dst (), pkt->len);
382		574
383	if (src == 0 \|\| src > conns.size ()	575	if (src == 0 \|\| src > conns.size ()
384	\|\| dst > conns.size ()	576	\|\| dst > conns.size ()
385	\|\| pkt->typ () >= vpn_packet::PT_MAX)	577	\|\| pkt->typ () >= vpn_packet::PT_MAX)
386	slog (L_WARN, _("(%s): received corrupted packet type %d (src %d, dst %d)"),	578	slog (L_WARN, _("(%s): received corrupted packet type %d (src %d, dst %d)."),
387	(const char *)rsi, pkt->typ (), pkt->src (), pkt->dst ());
388	else if (dst > conns.size ())
389	slog (L_WARN, _("(%s): received corrupted packet type %d (src %d, dst %d)"),
390	(const char *)rsi, pkt->typ (), pkt->src (), pkt->dst ());	579	(const char *)rsi, pkt->typ (), pkt->src (), pkt->dst ());
391	else	580	else
392	{	581	{
393	connection *c = conns[src - 1];	582	connection *c = conns[src - 1];
394		583
395	if (dst == 0)	584	if (dst == 0)
396	slog (L_WARN, _("%s(%s): received broadcast (protocol violation)"),	585	slog (L_WARN, _("%s(%s): received broadcast (protocol violation)."),
397	c->conf->nodename, (const char *)rsi);	586	c->conf->nodename, (const char *)rsi);
398	else if (dst != 0 && dst != THISNODE->id)	587	else if (dst != THISNODE->id)
399	{	588	{
400	if (THISNODE->routerprio)	589	if (THISNODE->routerprio)
401	// the tos setting gets lost here. who cares.	590	// the tos setting gets lost here. who cares.
402	conns[dst - 1]->inject_vpn_packet (pkt);	591	conns[dst - 1]->inject_vpn_packet (pkt);
403	else	592	else
404	slog (L_WARN,	593	slog (L_WARN,
405	_("%s(%s): forwarding request (=> %s), but we are no router"),	594	_("%s(%s): request to forward packet to %s, but we are no router (config mismatch?)."),
406	c->conf->nodename, (const char *)rsi,	595	c->conf->nodename, (const char *)rsi,
407	conns[dst - 1]->conf->nodename);	596	conns[dst - 1]->conf->nodename);
408	}	597	}
409	else	598	else
410	c->recv_vpn_packet (pkt, rsi);	599	c->recv_vpn_packet (pkt, rsi);
411	}	600	}
412	}	601	}
413		602
414	void	603	bool
		604	vpn::send_vpn_packet (vpn_packet *pkt, const sockinfo &si, int tos)
		605	{
		606	switch (si.prot)
		607	{
		608	case PROT_IPv4:
		609	return send_ipv4_packet (pkt, si, tos);
		610
		611	case PROT_UDPv4:
		612	return send_udpv4_packet (pkt, si, tos);
		613
		614	#if ENABLE_TCP
		615	case PROT_TCPv4:
		616	return send_tcpv4_packet (pkt, si, tos);
		617	#endif
		618	#if ENABLE_ICMP
		619	case PROT_ICMPv4:
		620	return send_icmpv4_packet (pkt, si, tos);
		621	#endif
		622	#if ENABLE_DNS
		623	case PROT_DNSv4:
		624	return send_dnsv4_packet (pkt, si, tos);
		625	#endif
		626	default:
		627	slog (L_CRIT, _("%s: FATAL: trying to send packet with unsupported protocol."), (const char *)si);
		628	}
		629
		630	return false;
		631	}
		632
		633	inline void
415	vpn::ipv4_ev (io_watcher &w, short revents)	634	vpn::ipv4_ev (ev::io &w, int revents)
416	{	635	{
417	if (revents & (POLLIN \| POLLERR))	636	if (revents & EV_READ)
418	{	637	{
419	vpn_packet *pkt = new vpn_packet;	638	vpn_packet *pkt = new vpn_packet;
420	struct sockaddr_in sa;	639	struct sockaddr_in sa;
421	socklen_t sa_len = sizeof (sa);	640	socklen_t sa_len = sizeof (sa);
422	int len;	641	int len;
…		…
427		646
428	if (len > 0)	647	if (len > 0)
429	{	648	{
430	pkt->len = len;	649	pkt->len = len;
431		650
432	// raw sockets deliver the ipv4, but don't expect it on sends	651	// raw sockets deliver the ipv4 header, but don't expect it on sends
433	// this is slow, but...	652	pkt->skip_hdr (pkt->ipv4_hdr_len ());
434	pkt->skip_hdr (IP_OVERHEAD);
435		653
436	recv_vpn_packet (pkt, si);	654	recv_vpn_packet (pkt, si);
437	}	655	}
438	else	656	else
439	{	657	{
440	// probably ECONNRESET or somesuch	658	// probably ECONNRESET or somesuch
441	slog (L_DEBUG, _("%s: %s"), (const char *)si, strerror (errno));	659	slog (L_DEBUG, _("%s: %s."), (const char *)si, strerror (errno));
442	}	660	}
443		661
444	delete pkt;	662	delete pkt;
445	}	663	}
446	else if (revents & POLLHUP)
447	{
448	// this cannot ;) happen on udp sockets
449	slog (L_ERR, _("FATAL: POLLHUP on ipv4 fd, terminating."));
450	exit (1);
451	}
452	else	664	else
453	{	665	{
454	slog (L_ERR,	666	slog (L_ERR,
455	_("FATAL: unknown revents %08x in socket, terminating\n"),	667	_("FATAL: unknown revents %08x in socket, exiting.\n"),
456	revents);	668	revents);
457	exit (1);	669	exit (EXIT_FAILURE);
458	}	670	}
459	}	671	}
460		672
461	#if ENABLE_ICMP	673	#if ENABLE_ICMP
462	void	674	inline void
463	vpn::icmpv4_ev (io_watcher &w, short revents)	675	vpn::icmpv4_ev (ev::io &w, int revents)
464	{	676	{
465	if (revents & (POLLIN \| POLLERR))	677	if (revents & EV_READ)
466	{	678	{
467	vpn_packet *pkt = new vpn_packet;	679	vpn_packet *pkt = new vpn_packet;
468	struct sockaddr_in sa;	680	struct sockaddr_in sa;
469	socklen_t sa_len = sizeof (sa);	681	socklen_t sa_len = sizeof (sa);
470	int len;	682	int len;
…		…
482	if (hdr->type == ::conf.icmp_type	694	if (hdr->type == ::conf.icmp_type
483	&& hdr->code == 255)	695	&& hdr->code == 255)
484	{	696	{
485	// raw sockets deliver the ipv4, but don't expect it on sends	697	// raw sockets deliver the ipv4, but don't expect it on sends
486	// this is slow, but...	698	// this is slow, but...
487	pkt->skip_hdr (ICMP_OVERHEAD);	699	pkt->skip_hdr (pkt->ipv4_hdr_len () + (ICMP_OVERHEAD - IP_OVERHEAD));
488		700
489	recv_vpn_packet (pkt, si);	701	recv_vpn_packet (pkt, si);
490	}	702	}
491	}	703	}
492	else	704	else
493	{	705	{
494	// probably ECONNRESET or somesuch	706	// probably ECONNRESET or somesuch
495	slog (L_DEBUG, _("%s: %s"), (const char *)si, strerror (errno));	707	slog (L_DEBUG, _("%s: %s."), (const char *)si, strerror (errno));
496	}	708	}
497		709
498	delete pkt;	710	delete pkt;
499	}	711	}
500	else if (revents & POLLHUP)
501	{
502	// this cannot ;) happen on udp sockets
503	slog (L_ERR, _("FATAL: POLLHUP on icmpv4 fd, terminating."));
504	exit (1);
505	}
506	else	712	else
507	{	713	{
508	slog (L_ERR,	714	slog (L_ERR,
509	_("FATAL: unknown revents %08x in socket, terminating\n"),	715	_("FATAL: unknown revents %08x in socket, exiting.\n"),
510	revents);	716	revents);
511	exit (1);	717	exit (EXIT_FAILURE);
512	}	718	}
513	}	719	}
514	#endif	720	#endif
515		721
516	void	722	inline void
517	vpn::udpv4_ev (io_watcher &w, short revents)	723	vpn::udpv4_ev (ev::io &w, int revents)
518	{	724	{
519	if (revents & (POLLIN \| POLLERR))	725	if (revents & EV_READ)
520	{	726	{
521	vpn_packet *pkt = new vpn_packet;	727	vpn_packet *pkt = new vpn_packet;
522	struct sockaddr_in sa;	728	struct sockaddr_in sa;
523	socklen_t sa_len = sizeof (sa);	729	socklen_t sa_len = sizeof (sa);
524	int len;	730	int len;
…		…
534	recv_vpn_packet (pkt, si);	740	recv_vpn_packet (pkt, si);
535	}	741	}
536	else	742	else
537	{	743	{
538	// probably ECONNRESET or somesuch	744	// probably ECONNRESET or somesuch
539	slog (L_DEBUG, _("%s: fd %d, %s"), (const char *)si, w.fd, strerror (errno));	745	slog (L_DEBUG, _("%s: fd %d, %s."), (const char *)si, w.fd, strerror (errno));
540	}	746	}
541		747
542	delete pkt;	748	delete pkt;
543	}	749	}
544	else if (revents & POLLHUP)
545	{
546	// this cannot ;) happen on udp sockets
547	slog (L_ERR, _("FATAL: POLLHUP on udp v4 fd, terminating."));
548	exit (1);
549	}
550	else	750	else
551	{	751	{
552	slog (L_ERR,	752	slog (L_ERR,
553	_("FATAL: unknown revents %08x in socket, terminating\n"),	753	_("FATAL: unknown revents %08x in socket, exiting.\n"),
554	revents);	754	revents);
555	exit (1);	755	exit (EXIT_FAILURE);
556	}	756	}
557	}	757	}
558		758
559	void	759	inline void
560	vpn::tap_ev (io_watcher &w, short revents)	760	vpn::tap_ev (ev::io &w, int revents)
561	{	761	{
562	if (revents & POLLIN)	762	if (revents & EV_READ)
563	{	763	{
564	/* process data */	764	/* process data */
565	tap_packet *pkt;	765	tap_packet *pkt;
566		766
567	pkt = tap->recv ();	767	pkt = tap->recv ();
568		768
		769	if (!pkt)
		770	return;
		771
		772	if (pkt->len > 14)
		773	{
569	int dst = mac2id (pkt->dst);	774	int dst = mac2id (pkt->dst);
570	int src = mac2id (pkt->src);	775	int src = mac2id (pkt->src);
571		776
572	if (src != THISNODE->id)	777	if (src != THISNODE->id)
573	{
574	slog (L_ERR, _("FATAL: tap packet not originating on current node received, exiting."));
575	exit (1);
576	}
577
578	if (dst == THISNODE->id)
579	{
580	slog (L_ERR, _("FATAL: tap packet destined for current node received, exiting."));
581	exit (1);
582	}
583
584	if (dst > conns.size ())
585	slog (L_ERR, _("tap packet for unknown node %d received, ignoring."), dst);
586	else
587	{
588	if (dst)
589	{	778	{
590	// unicast	779	slog (L_ERR, _("FATAL: tap packet not originating on current node received (if-up script not working properly?), exiting."));
591	if (dst != THISNODE->id)	780	exit (EXIT_FAILURE);
592	conns[dst - 1]->inject_data_packet (pkt);
593	}	781	}
		782
		783	if (dst == THISNODE->id)
		784	{
		785	slog (L_ERR, _("FATAL: tap packet destined for current node received, exiting."));
		786	exit (EXIT_FAILURE);
		787	}
		788
		789	if (dst > conns.size ())
		790	slog (L_ERR, _("tap packet for unknown node %d received, ignoring."), dst);
594	else	791	else
595	{
596	// broadcast, this is ugly, but due to the security policy
597	// we have to connect to all hosts...
598	for (conns_vector::iterator c = conns.begin (); c != conns.end (); ++c)
599	if ((*c)->conf != THISNODE)
600	(*c)->inject_data_packet (pkt);	792	inject_data_packet (pkt, dst);
601	}
602	}	793	}
603		794
604	delete pkt;	795	delete pkt;
605	}
606	else if (revents & (POLLHUP \| POLLERR))
607	{
608	slog (L_ERR, _("FATAL: POLLHUP or POLLERR on network device fd, terminating."));
609	exit (1);
610	}	796	}
611	else	797	else
612	abort ();	798	abort ();
613	}	799	}
614		800
615	void	801	inline void
616	vpn::event_cb (time_watcher &w)	802	vpn::event_cb (ev::timer &w, int)
617	{	803	{
618	if (events)	804	if (events)
619	{	805	{
620	if (events & EVENT_SHUTDOWN)	806	if (events & EVENT_SHUTDOWN)
621	{	807	{
622	slog (L_INFO, _("preparing shutdown..."));	808	slog (L_INFO, _("preparing shutdown..."));
623		809
624	shutdown_all ();	810	shutdown_all ();
625
626	remove_pid (pidfilename);	811	remove_pid (conf.pidfilename);
627
628	slog (L_INFO, _("terminating"));	812	slog (L_INFO, _("exiting."));
629		813	exit (EXIT_SUCCESS);
630	exit (0);
631	}	814	}
632		815
633	if (events & EVENT_RECONNECT)	816	if (events & EVENT_RECONNECT)
634	{	817	{
635	slog (L_INFO, _("forced reconnect"));	818	slog (L_INFO, _("forced reconnect."));
636		819
637	reconnect_all ();	820	reconnect_all ();
638	}	821	}
639		822
640	events = 0;	823	events = 0;
641	}	824	}
642
643	w.at = TSTAMP_CANCEL;
644	}	825	}
645		826
646	void	827	void
647	vpn::shutdown_all ()	828	vpn::shutdown_all ()
648	{	829	{
…		…
658		839
659	conns.clear ();	840	conns.clear ();
660		841
661	connection_init ();	842	connection_init ();
662		843
663	for (configuration::node_vector::iterator i = conf.nodes.begin ();	844	for (configuration::node_vector::iterator i = conf.nodes.begin (); i != conf.nodes.end (); ++i)
664	i != conf.nodes.end (); ++i)	845	conns.push_back (new connection (this, *i));
665	{
666	connection *conn = new connection (this);
667		846
668	conn->conf = *i;	847	for (conns_vector::iterator c = conns.begin (); c != conns.end (); ++c)
669	conns.push_back (conn);
670
671	conn->establish_connection ();	848	(*c)->establish_connection ();
672	}
673	}	849	}
674		850
675	connection *vpn::find_router ()	851	bool
		852	vpn::can_direct (conf_node src, conf_node dst) const
676	{	853	{
677	u32 prio = 1;	854	return src != dst
		855	&& src->may_direct (dst)
		856	&& dst->may_direct (src)
		857	&& (((src->protocols & dst->protocols) && src->connectmode == conf_node::C_ALWAYS)
		858	\|\| (src->protocols & dst->connectable_protocols ()));
		859	}
		860
		861	// only works for indirect and routed connections: find a router
		862	// from THISNODE to dst
		863	connection *
		864	vpn::find_router_for (const connection *dst)
		865	{
678	connection *router = 0;	866	connection *router = 0;
679		867
		868	// first try to find a router with a direct connection, route there
		869	// regardless of any other considerations.
		870	{
		871	u32 prio = 1;
		872
		873	for (conns_vector::iterator i = conns.begin (); i != conns.end (); ++i)
		874	{
		875	connection c = i;
		876
		877	if (c->conf->routerprio > prio
		878	&& c->conf != THISNODE
		879	&& can_direct (c->conf, dst->conf)
		880	&& c->ictx && c->octx)
		881	{
		882	prio = c->conf->routerprio;
		883	router = c;
		884	}
		885	}
		886	}
		887
		888	if (router)
		889	return router;
		890
		891	// second try find the router with the highest priority, higher than ours
		892	{
		893	u32 prio = THISNODE->routerprio ? THISNODE->routerprio : 1;
		894
		895	for (conns_vector::iterator i = conns.begin (); i != conns.end (); ++i)
		896	{
		897	connection c = i;
		898
		899	if (c->conf->routerprio > prio
		900	&& c != dst
		901	&& c->conf != THISNODE
		902	&& c->ictx && c->octx)
		903	{
		904	prio = c->conf->routerprio;
		905	router = c;
		906	}
		907	}
		908	}
		909
		910	return router;
		911	}
		912
		913	void
		914	vpn::connection_established (connection *c)
		915	{
680	for (conns_vector::iterator i = conns.begin (); i != conns.end (); ++i)	916	for (conns_vector::iterator i = conns.begin (); i != conns.end (); ++i)
681	{	917	{
682	connection c = i;	918	connection o = i;
683		919
684	if (c->conf->routerprio > prio	920	if (o->si.valid ()
685	&& c->connectmode == conf_node::C_ALWAYS // so we don't drop the connection if in use	921	&& c->si != o->si
686	&& c->ictx && c->octx	922	&& c == find_router_for (o)
687	&& c->conf != THISNODE) // redundant, since ictx==octx==0 always on thisnode	923	&& !can_direct (THISNODE, o->conf))
688	{
689	prio = c->conf->routerprio;
690	router = c;
691	}	924	{
		925	slog (L_DEBUG, _("%s: can now route packets via %s, re-keying connection."),
		926	o->conf->nodename, c->conf->nodename);
		927	o->rekey ();
		928	}
692	}	929	}
693
694	return router;
695	}	930	}
696		931
		932	void
697	void vpn::send_connect_request (int id)	933	vpn::send_connect_request (connection *c)
698	{	934	{
699	connection *c = find_router ();	935	connection *r = find_router_for (c);
700		936
701	if (c)	937	if (r)
		938	{
		939	slog (L_TRACE, _("%s: no address known, sending mediated connection request via %s."),
		940	c->conf->nodename, r->conf->nodename);
702	c->send_connect_request (id);	941	r->send_connect_request (c->conf->id);
		942	}
703	else	943	else
704	// no router found, aggressively connect to all routers	944	slog (L_DEBUG, _("%s: no way to connect and no router found: unable to connect at this time."),
705	for (conns_vector::iterator i = conns.begin (); i != conns.end (); ++i)	945	c->conf->nodename);
706	if ((i)->conf->routerprio && (i)->conf != THISNODE)
707	(*i)->establish_connection ();
708	}	946	}
709		947
710	void	948	void
711	connection::dump_status ()	949	connection::dump_status ()
712	{	950	{
713	slog (L_NOTICE, _("node %s (id %d)"), conf->nodename, conf->id);	951	slog (L_NOTICE, _("node %s (id %d)"), conf->nodename, conf->id);
714	slog (L_NOTICE, _(" connectmode %d (%d) / sockaddr %s / minor %d"),	952	slog (L_NOTICE, _(" connectmode %d (%d) / sockaddr %s / minor %d"),
715	connectmode, conf->connectmode, (const char *)si, (int)prot_minor);	953	connectmode, conf->connectmode, (const char *)si, (int)prot_minor);
716	slog (L_NOTICE, _(" ictx/octx %08lx/%08lx / oseqno %d / retry_cnt %d"),	954	slog (L_NOTICE, _(" ictx/octx %08lx/%08lx / oseqno %d / retry_cnt %d"),
717	(long)ictx, (long)octx, (int)oseqno, (int)retry_cnt);	955	(long)ictx, (long)octx, (int)oseqno, (int)retry_cnt);
718	slog (L_NOTICE, _(" establish_conn %ld / rekey %ld / keepalive %ld"),
719	(long)(establish_connection.at), (long)(rekey.at), (long)(keepalive.at));
720	}	956	}
721		957
722	void	958	void
723	vpn::dump_status ()	959	vpn::dump_status ()
724	{	960	{
725	slog (L_NOTICE, _("BEGIN status dump (%ld)"), (long)NOW);	961	slog (L_NOTICE, _("BEGIN status dump (%ld)"), (long)ev_now ());
726		962
727	for (conns_vector::iterator c = conns.begin (); c != conns.end (); ++c)	963	for (conns_vector::iterator c = conns.begin (); c != conns.end (); ++c)
728	(*c)->dump_status ();	964	(*c)->dump_status ();
729		965
730	slog (L_NOTICE, _("END status dump"));	966	slog (L_NOTICE, _("END status dump"));
731	}	967	}
732		968
733	vpn::vpn (void)	969	vpn::vpn (void)
		970	{
734	: event (this, &vpn::event_cb)	971	event .set<vpn, &vpn::event_cb > (this);
735	, udpv4_ev_watcher (this, &vpn::udpv4_ev)	972	udpv4_ev_watcher .set<vpn, &vpn::udpv4_ev > (this);
736	, ipv4_ev_watcher (this, &vpn::ipv4_ev)	973	ipv4_ev_watcher .set<vpn, &vpn::ipv4_ev > (this);
737	#if ENABLE_TCP	974	#if ENABLE_TCP
738	, tcpv4_ev_watcher (this, &vpn::tcpv4_ev)	975	tcpv4_ev_watcher .set<vpn, &vpn::tcpv4_ev > (this);
739	#endif	976	#endif
740	#if ENABLE_ICMP	977	#if ENABLE_ICMP
741	, icmpv4_ev_watcher(this, &vpn::icmpv4_ev)	978	icmpv4_ev_watcher.set<vpn, &vpn::icmpv4_ev> (this);
742	#endif	979	#endif
743	, tap_ev_watcher (this, &vpn::tap_ev)	980	#if ENABLE_DNS
744	{	981	dnsv4_ev_watcher .set<vpn, &vpn::dnsv4_ev > (this);
		982	#endif
		983	tap_ev_watcher .set<vpn, &vpn::tap_ev > (this);
745	}	984	}
746		985
747	vpn::~vpn ()	986	vpn::~vpn ()
748	{	987	{
749	}	988	}

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Comparing gvpe/src/vpn.C (file contents): Revision 1.14 by pcg, Tue Oct 14 03:22:09 2003 UTC vs. Revision 1.69 by root, Sat Sep 5 17:40:22 2015 UTC

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Comparing gvpe/src/vpn.C (file contents):
Revision 1.14 by pcg, Tue Oct 14 03:22:09 2003 UTC vs.
Revision 1.69 by root, Sat Sep 5 17:40:22 2015 UTC