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

Comparing gvpe/src/vpn.C (file contents):
Revision 1.15 by pcg, Tue Oct 14 15:48:15 2003 UTC vs.
Revision 1.70 by root, Thu Oct 6 03:03:09 2022 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>
40		53
41	#include "connection.h"	54	#include "connection.h"
42	#include "util.h"	55	#include "util.h"
43	#include "vpn.h"	56	#include "vpn.h"
44		57
		58	using namespace std;
		59
		60	vpn network; // THE vpn (bad design...)
		61
45	/////////////////////////////////////////////////////////////////////////////	62	/////////////////////////////////////////////////////////////////////////////
46		63
47	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 ()
48	{	104	{
49	// the tunnel device mtu should be the physical mtu - overhead	105	// the tunnel device mtu should be the physical mtu - overhead
50	// the tricky part is rounding to the cipher key blocksize	106	// the tricky part is rounding to the cipher key blocksize
51	int mtu = conf.mtu - ETH_OVERHEAD - VPE_OVERHEAD - MAX_OVERHEAD;	107	int mtu = conf.mtu - ETH_OVERHEAD - VPE_OVERHEAD - MAX_OVERHEAD;
52	mtu += ETH_OVERHEAD - 6 - 6; // now we have the data portion	108	mtu += ETH_OVERHEAD - 6 - 6; // now we have the data portion
53	mtu -= mtu % EVP_CIPHER_block_size (CIPHER); // round	109	mtu -= mtu % BLOCK_SIZE (CIPHER); // round
54	mtu -= ETH_OVERHEAD - 6 - 6; // and get interface mtu again	110	mtu -= ETH_OVERHEAD - 6 - 6; // and get interface mtu again
55		111
56	char *env;	112	char *env;
57	asprintf (&env, "CONFBASE=%s", confbase);	113	asprintf (&env, "CONFBASE=%s", confbase); putenv (env);
58	putenv (env);
59	asprintf (&env, "NODENAME=%s", THISNODE->nodename);
60	putenv (env);
61	asprintf (&env, "NODEID=%d", THISNODE->id);
62	putenv (env);
63	asprintf (&env, "IFNAME=%s", tap->interface ());	114	asprintf (&env, "IFNAME=%s", tap->interface ()); putenv (env);
64	putenv (env);	115	asprintf (&env, "IFTYPE=%s", IFTYPE); putenv (env);
		116	asprintf (&env, "IFSUBTYPE=%s", IFSUBTYPE); putenv (env);
65	asprintf (&env, "MTU=%d", mtu);	117	asprintf (&env, "MTU=%d", mtu); putenv (env);
66	putenv (env);	118	asprintf (&env, "NODES=%d", conns.size ()); putenv (env);
67	asprintf (&env, "MAC=%02x:%02x:%02x:%02x:%02x:%02x",	119	asprintf (&env, "NODEID=%d", THISNODE->id); putenv (env);
68	0xfe, 0xfd, 0x80, 0x00, THISNODE->id >> 8,
69	THISNODE->id & 0xff);
70	putenv (env);
71		120
72	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;
73	}	168	}
74		169
75	int	170	int
76	vpn::setup ()	171	vpn::setup ()
77	{	172	{
		173	int success = 0;
		174
		175	ipv4_tos = -1;
78	ipv4_fd = -1;	176	ipv4_fd = -1;
79		177
80	if (THISNODE->protocols & PROT_IPv4 && ::conf.ip_proto)	178	if (THISNODE->protocols & PROT_IPv4 && ::conf.ip_proto)
81	{	179	{
82	ipv4_fd = socket (PF_INET, SOCK_RAW, ::conf.ip_proto);	180	ipv4_fd = setup_socket (PROT_IPv4, PF_INET, SOCK_RAW, ::conf.ip_proto);
83		181
84	if (ipv4_fd < 0)	182	if (ipv4_fd < 0)
85	return -1;	183	return -1;
86
87	fcntl (ipv4_fd, F_SETFL, O_NONBLOCK);
88		184
89	#if defined(SOL_IP) && defined(IP_MTU_DISCOVER)	185	#if defined(SOL_IP) && defined(IP_MTU_DISCOVER)
90	// this I really consider a linux bug. I am neither connected	186	// this I really consider a linux bug. I am neither connected
91	// 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
92	// fragment for me sometimes.	188	// fragment for me sometimes.
…		…
98		194
99	sockinfo si (THISNODE, PROT_IPv4);	195	sockinfo si (THISNODE, PROT_IPv4);
100		196
101	if (bind (ipv4_fd, si.sav4 (), si.salenv4 ()))	197	if (bind (ipv4_fd, si.sav4 (), si.salenv4 ()))
102	{	198	{
103	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));
104	exit (1);	200	return -1;
105	}	201	}
106		202
107	ipv4_ev_watcher.start (ipv4_fd, POLLIN);	203	ipv4_ev_watcher.start (ipv4_fd, EV_READ);
		204	++success;
108	}	205	}
		206	else
		207	THISNODE->protocols &= ~PROT_IPv4;
109		208
		209	udpv4_tos = -1;
110	udpv4_fd = -1;	210	udpv4_fd = -1;
111		211
112	if (THISNODE->protocols & PROT_UDPv4 && THISNODE->udp_port)	212	if (THISNODE->protocols & PROT_UDPv4 && THISNODE->udp_port)
113	{	213	{
114	udpv4_fd = socket (PF_INET, SOCK_DGRAM, IPPROTO_UDP);	214	udpv4_fd = setup_socket (PROT_UDPv4, PF_INET, SOCK_DGRAM, IPPROTO_UDP);
115		215
116	if (udpv4_fd < 0)	216	if (udpv4_fd < 0)
117	return -1;	217	return -1;
118
119	fcntl (udpv4_fd, F_SETFL, O_NONBLOCK);
120		218
121	// standard daemon practise...	219	// standard daemon practise...
122	{	220	{
123	int oval = 1;	221	int oval = 1;
124	setsockopt (udpv4_fd, SOL_SOCKET, SO_REUSEADDR, &oval, sizeof oval);	222	setsockopt (udpv4_fd, SOL_SOCKET, SO_REUSEADDR, &oval, sizeof oval);
…		…
136		234
137	sockinfo si (THISNODE, PROT_UDPv4);	235	sockinfo si (THISNODE, PROT_UDPv4);
138		236
139	if (bind (udpv4_fd, si.sav4 (), si.salenv4 ()))	237	if (bind (udpv4_fd, si.sav4 (), si.salenv4 ()))
140	{	238	{
141	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));
142	exit (1);	240	return -1;
143	}	241	}
144		242
145	udpv4_ev_watcher.start (udpv4_fd, POLLIN);	243	udpv4_ev_watcher.start (udpv4_fd, EV_READ);
		244	++success;
146	}	245	}
		246	else
		247	THISNODE->protocols &= ~PROT_UDPv4;
147		248
		249	icmpv4_tos = -1;
148	icmpv4_fd = -1;	250	icmpv4_fd = -1;
149		251
150	#if ENABLE_ICMP	252	#if ENABLE_ICMP
151	if (THISNODE->protocols & PROT_ICMPv4)	253	if (THISNODE->protocols & PROT_ICMPv4)
152	{	254	{
153	icmpv4_fd = socket (PF_INET, SOCK_RAW, IPPROTO_ICMP);	255	icmpv4_fd = setup_socket (PROT_ICMPv4, PF_INET, SOCK_RAW, IPPROTO_ICMP);
154		256
155	if (icmpv4_fd < 0)	257	if (icmpv4_fd < 0)
156	return -1;	258	return -1;
157		259
158	fcntl (icmpv4_fd, F_SETFL, O_NONBLOCK);
159
160	#ifdef ICMP_FILTER	260	#ifdef ICMP_FILTER
161	{	261	{
162	icmp_filter oval;	262	icmp_filter oval;
163	oval.data = 0xffffffff;	263	oval.data = 0;
164	if (::conf.icmp_type < 32)	264	if (::conf.icmp_type < 32)
165	oval.data &= ~(1 << ::conf.icmp_type);	265	oval.data \|= 1 << ::conf.icmp_type;
		266	oval.data = ~oval.data;
166		267
167	setsockopt (icmpv4_fd, SOL_RAW, ICMP_FILTER, &oval, sizeof oval);	268	setsockopt (icmpv4_fd, SOL_RAW, ICMP_FILTER, &oval, sizeof oval);
168	}	269	}
169	#endif	270	#endif
170		271
…		…
172	// this I really consider a linux bug. I am neither connected	273	// this I really consider a linux bug. I am neither connected
173	// nor do I fragment myself. Linux still sets DF and doesn't	274	// nor do I fragment myself. Linux still sets DF and doesn't
174	// fragment for me sometimes.	275	// fragment for me sometimes.
175	{	276	{
176	int oval = IP_PMTUDISC_DONT;	277	int oval = IP_PMTUDISC_DONT;
177	setsockopt (udpv4_fd, SOL_IP, IP_MTU_DISCOVER, &oval, sizeof oval);	278	setsockopt (icmpv4_fd, SOL_IP, IP_MTU_DISCOVER, &oval, sizeof oval);
178	}	279	}
179	#endif	280	#endif
180		281
181	sockinfo si (THISNODE, PROT_ICMPv4);	282	sockinfo si (THISNODE, PROT_ICMPv4);
182		283
183	if (bind (icmpv4_fd, si.sav4 (), si.salenv4 ()))	284	if (bind (icmpv4_fd, si.sav4 (), si.salenv4 ()))
184	{	285	{
185	slog (L_ERR, _("can't bind icmpv4 on %s: %s"), (const char *)si, strerror (errno));	286	slog (L_ERR, _("can't bind icmpv4 on %s: %s, exiting."), (const char *)si, strerror (errno));
186	exit (1);	287	return -1;
187	}	288	}
188		289
189	icmpv4_ev_watcher.start (icmpv4_fd, POLLIN);	290	icmpv4_ev_watcher.start (icmpv4_fd, EV_READ);
		291	++success;
190	}	292	}
191	#endif	293	#endif
192		294
193	tcpv4_fd = -1;	295	tcpv4_fd = -1;
194		296
195	#if ENABLE_TCP	297	#if ENABLE_TCP
196	if (THISNODE->protocols & PROT_TCPv4 && THISNODE->tcp_port)	298	if (THISNODE->protocols & PROT_TCPv4 && THISNODE->tcp_port)
197	{	299	{
198	tcpv4_fd = socket (PF_INET, SOCK_STREAM, IPPROTO_TCP);	300	tcpv4_fd = setup_socket (PROT_TCPv4, PF_INET, SOCK_STREAM, IPPROTO_TCP);
199		301
200	if (tcpv4_fd < 0)	302	if (tcpv4_fd < 0)
201	return -1;	303	return -1;
202		304
203	fcntl (tcpv4_fd, F_SETFL, O_NONBLOCK);
204
205	// standard daemon practise...	305	// standard daemon practise...
206	{	306	{
207	int oval = 1;	307	int oval = 1;
208	setsockopt (tcpv4_fd, SOL_SOCKET, SO_REUSEADDR, &oval, sizeof oval);	308	setsockopt (tcpv4_fd, SOL_SOCKET, SO_REUSEADDR, &oval, sizeof oval);
209	}	309	}
210		310
211	sockinfo si (THISNODE, PROT_TCPv4);	311	sockinfo si (THISNODE, PROT_TCPv4);
212		312
213	if (bind (tcpv4_fd, si.sav4 (), si.salenv4 ()))	313	if (bind (tcpv4_fd, si.sav4 (), si.salenv4 ()))
214	{	314	{
215	slog (L_ERR, _("can't bind tcpv4 on %s: %s"), (const char *)si, strerror (errno));	315	slog (L_ERR, _("can't bind tcpv4 on %s: %s, exiting."), (const char *)si, strerror (errno));
216	exit (1);	316	return -1;
217	}	317	}
218		318
219	if (listen (tcpv4_fd, 5))	319	if (listen (tcpv4_fd, 5))
220	{	320	{
221	slog (L_ERR, _("can't listen tcpv4 on %s: %s"), (const char *)si, strerror (errno));	321	slog (L_ERR, _("can't listen tcpv4 on %s: %s, exiting."), (const char *)si, strerror (errno));
222	exit (1);	322	return -1;
		323	}
		324
		325	tcpv4_ev_watcher.start (tcpv4_fd, EV_READ);
		326	++success;
		327	}
		328	else
		329	THISNODE->protocols &= ~PROT_TCPv4;
		330	#endif
		331
		332	dnsv4_tos = -1;
		333	dnsv4_fd = -1;
		334
		335	#if ENABLE_DNS
		336	if (THISNODE->protocols & PROT_DNSv4)
		337	{
		338	dns_forwarder.set (::conf.dns_forw_host, ::conf.dns_forw_port, PROT_DNSv4);
		339
		340	dnsv4_fd = setup_socket (PROT_DNSv4, PF_INET, SOCK_DGRAM, IPPROTO_UDP);
		341
		342	if (dnsv4_fd < 0)
		343	return -1;
		344
		345	# if defined(SOL_IP) && defined(IP_MTU_DISCOVER)
		346	// this I really consider a linux bug. I am neither connected
		347	// nor do I fragment myself. Linux still sets DF and doesn't
		348	// fragment for me sometimes.
		349	{
		350	int oval = IP_PMTUDISC_DONT;
		351	setsockopt (dnsv4_fd, SOL_IP, IP_MTU_DISCOVER, &oval, sizeof oval);
223	}	352	}
224
225	tcpv4_ev_watcher.start (tcpv4_fd, POLLIN);
226	}
227	#endif	353	# endif
		354
		355	// standard daemon practise...
		356	{
		357	int oval = 1;
		358	setsockopt (dnsv4_fd, SOL_SOCKET, SO_REUSEADDR, &oval, sizeof oval);
		359	}
		360
		361	sockinfo si (THISNODE->dns_hostname,
		362	THISNODE->dns_hostname ? THISNODE->dns_port : 0,
		363	PROT_DNSv4);
		364
		365	if (bind (dnsv4_fd, si.sav4 (), si.salenv4 ()))
		366	{
		367	slog (L_ERR, _("can't bind dnsv4 on %s: %s, exiting."), (const char *)si, strerror (errno));
		368	return -1;
		369	}
		370
		371	dnsv4_ev_watcher.start (dnsv4_fd, EV_READ);
		372	++success;
		373	}
		374	#endif
		375
		376	/////////////////////////////////////////////////////////////////////////////
		377
		378	if (!success)
		379	{
		380	slog (L_ERR, _("no protocols enabled."));
		381	return -1;
		382	}
		383
		384	reconnect_all ();
		385
		386	/////////////////////////////////////////////////////////////////////////////
228		387
229	tap = new tap_device ();	388	tap = new tap_device ();
230	if (!tap) //D this, of course, never catches	389	if (!tap) //D this, of course, never catches
231	{	390	{
232	slog (L_ERR, _("cannot create network interface '%s'"), conf.ifname);	391	slog (L_ERR, _("cannot create network interface '%s'."), conf.ifname);
233	exit (1);	392	return -1;
234	}	393	}
235		394
236	run_script (run_script_cb (this, &vpn::script_if_up), true);	395	fcntl (tap->fd, F_SETFD, FD_CLOEXEC);
237		396
		397	run_script_cb cb;
		398	cb.set<vpn, &vpn::script_if_init> (this);
		399
		400	if (tap->if_up () &&
		401	!run_script (cb, true))
		402	{
		403	slog (L_ERR, _("interface initialization command '%s' failed."),
		404	tap->if_up ());
		405	return -1;
		406	}
		407
		408	cb.set<vpn, &vpn::script_if_up> (this);
		409	if (!run_script (cb, true))
		410	{
		411	slog (L_ERR, _("if-up command execution failed."));
		412	return -1;
		413	}
		414
238	tap_ev_watcher.start (tap->fd, POLLIN);	415	tap_ev_watcher.start (tap->fd, EV_READ);
239
240	reconnect_all ();
241		416
242	return 0;	417	return 0;
243	}	418	}
244		419
245	// send a vpn packet out to other hosts
246	bool	420	bool
247	vpn::send_vpn_packet (vpn_packet *pkt, const sockinfo &si, int tos)	421	vpn::drop_privileges ()
248	{	422	{
249	switch (si.prot)	423	if (::conf.change_root)
		424	{
		425	if (!strcmp (::conf.change_root, "/"))
		426	{
		427	char dir [L_tmpnam];
		428	if (!tmpnam (dir))
		429	{
		430	slog (L_CRIT, _("unable to create anonymous root path."));
		431	return false;
		432	}
		433
		434	if (mkdir (dir, 0700))
		435	{
		436	slog (L_CRIT, _("unable to create anonymous root directory."));
		437	return false;
		438	}
		439
		440	if (chdir (dir))
		441	{
		442	slog (L_CRIT, _("unable to change to anonymous root directory."));
		443	return false;
		444	}
		445
		446	if (rmdir (dir))
		447	slog (L_ERR, _("unable to remove anonymous root directory, continuing."));
		448	}
		449	else
		450	{
		451	if (chdir (::conf.change_root))
		452	{
		453	slog (L_CRIT, _("%s: unable to change to specified root directory."), ::conf.change_root);
		454	return false;
		455	}
		456	}
		457
		458	if (chroot ("."))
		459	{
		460	slog (L_CRIT, _("unable to set new root directory."));
		461	return false;
		462	}
		463
		464	if (chdir ("/"))
		465	{
		466	slog (L_CRIT, _("unable to set cwd to new root directory."));
		467	return false;
		468	}
		469	}
		470
		471	if (::conf.change_gid)
		472	if (setgid (::conf.change_gid))
250	{	473	{
251	case PROT_IPv4:	474	slog (L_CRIT, _("unable to change group id to %d."), ::conf.change_gid);
252	return send_ipv4_packet (pkt, si, tos);
253
254	case PROT_UDPv4:
255	return send_udpv4_packet (pkt, si, tos);
256
257	#if ENABLE_TCP
258	case PROT_TCPv4:
259	return send_tcpv4_packet (pkt, si, tos);
260	#endif
261
262	#if ENABLE_ICMP
263	case PROT_ICMPv4:
264	return send_icmpv4_packet (pkt, si, tos);
265	#endif
266
267	default:
268	slog (L_CRIT, _("%s: FATAL: trying to send packet with unsupported protocol"), (const char *)si);
269	return false;	475	return false;
270	}	476	}
		477
		478	if (::conf.change_uid)
		479	if (setuid (::conf.change_uid))
		480	{
		481	slog (L_CRIT, _("unable to change user id to %d."), ::conf.change_uid);
		482	return false;
		483	}
		484
		485	return true;
271	}	486	}
272		487
273	bool	488	bool
274	vpn::send_ipv4_packet (vpn_packet *pkt, const sockinfo &si, int tos)	489	vpn::send_ipv4_packet (vpn_packet *pkt, const sockinfo &si, int tos)
275	{	490	{
276	#if defined(SOL_IP) && defined(IP_TOS)	491	set_tos (ipv4_fd, ipv4_tos, tos);
277	setsockopt (ipv4_fd, SOL_IP, IP_TOS, &tos, sizeof tos);
278	#endif
279	sendto (ipv4_fd, &((*pkt)[0]), pkt->len, 0, si.sav4 (), si.salenv4 ());	492	xsendto (ipv4_fd, &((*pkt)[0]), pkt->len, 0, si.sav4 (), si.salenv4 ());
280		493
281	return true;	494	return true;
282	}	495	}
283		496
284	static u16	497	static u16
…		…
306		519
307	#if ENABLE_ICMP	520	#if ENABLE_ICMP
308	bool	521	bool
309	vpn::send_icmpv4_packet (vpn_packet *pkt, const sockinfo &si, int tos)	522	vpn::send_icmpv4_packet (vpn_packet *pkt, const sockinfo &si, int tos)
310	{	523	{
311	#if defined(SOL_IP) && defined(IP_TOS)
312	setsockopt (icmpv4_fd, SOL_IP, IP_TOS, &tos, sizeof tos);
313	#endif
314
315	pkt->unshift_hdr (4);	524	pkt->unshift_hdr (4);
316		525
317	icmp_header hdr = (icmp_header )&((*pkt)[0]);	526	icmp_header hdr = (icmp_header )&((*pkt)[0]);
318	hdr->type = ::conf.icmp_type;	527	hdr->type = ::conf.icmp_type;
319	hdr->code = 255;	528	hdr->code = 255;
320	hdr->checksum = 0;	529	hdr->checksum = 0;
321	hdr->checksum = ipv4_checksum ((u16 *)hdr, pkt->len);	530	hdr->checksum = ipv4_checksum ((u16 *)hdr, pkt->len);
322		531
		532	set_tos (icmpv4_fd, icmpv4_tos, tos);
323	sendto (icmpv4_fd, &((*pkt)[0]), pkt->len, 0, si.sav4 (), si.salenv4 ());	533	xsendto (icmpv4_fd, &((*pkt)[0]), pkt->len, 0, si.sav4 (), si.salenv4 ());
324		534
325	return true;	535	return true;
326	}	536	}
327	#endif	537	#endif
328		538
329	bool	539	bool
330	vpn::send_udpv4_packet (vpn_packet *pkt, const sockinfo &si, int tos)	540	vpn::send_udpv4_packet (vpn_packet *pkt, const sockinfo &si, int tos)
331	{	541	{
332	#if defined(SOL_IP) && defined(IP_TOS)	542	set_tos (udpv4_fd, udpv4_tos, tos);
333	setsockopt (udpv4_fd, SOL_IP, IP_TOS, &tos, sizeof tos);
334	#endif
335	sendto (udpv4_fd, &((*pkt)[0]), pkt->len, 0, si.sav4 (), si.salenv4 ());	543	xsendto (udpv4_fd, &((*pkt)[0]), pkt->len, 0, si.sav4 (), si.salenv4 ());
336		544
337	return true;	545	return true;
		546	}
		547
		548	void
		549	vpn::inject_data_packet (tap_packet *pkt, int dst)
		550	{
		551	if (dst)
		552	{
		553	// unicast
		554	if (dst != THISNODE->id)
		555	conns[dst - 1]->inject_data_packet (pkt);
		556	}
		557	else
		558	{
		559	// broadcast, this is ugly, but due to the security policy
		560	// we have to connect to all hosts...
		561	for (conns_vector::iterator c = conns.begin (); c != conns.end (); ++c)
		562	if ((*c)->conf != THISNODE)
		563	(*c)->inject_data_packet (pkt);
		564	}
338	}	565	}
339		566
340	void	567	void
341	vpn::recv_vpn_packet (vpn_packet *pkt, const sockinfo &rsi)	568	vpn::recv_vpn_packet (vpn_packet *pkt, const sockinfo &rsi)
342	{	569	{
343	unsigned int src = pkt->src ();	570	unsigned int src = pkt->src ();
344	unsigned int dst = pkt->dst ();	571	unsigned int dst = pkt->dst ();
345		572
346	slog (L_NOISE, _("<<?/%s received possible vpn packet type %d from %d to %d, length %d"),	573	slog (L_NOISE, _("<<?/%s received possible vpn packet type %d from %d to %d, length %d."),
347	(const char *)rsi, pkt->typ (), pkt->src (), pkt->dst (), pkt->len);	574	(const char *)rsi, pkt->typ (), pkt->src (), pkt->dst (), pkt->len);
348		575
349	if (src == 0 \|\| src > conns.size ()	576	if (src == 0 \|\| src > conns.size ()
350	\|\| dst > conns.size ()	577	\|\| dst > conns.size ()
351	\|\| pkt->typ () >= vpn_packet::PT_MAX)	578	\|\| pkt->typ () >= vpn_packet::PT_MAX)
352	slog (L_WARN, _("(%s): received corrupted packet type %d (src %d, dst %d)"),	579	slog (L_WARN, _("(%s): received corrupted packet type %d (src %d, dst %d)."),
353	(const char *)rsi, pkt->typ (), pkt->src (), pkt->dst ());
354	else if (dst > conns.size ())
355	slog (L_WARN, _("(%s): received corrupted packet type %d (src %d, dst %d)"),
356	(const char *)rsi, pkt->typ (), pkt->src (), pkt->dst ());	580	(const char *)rsi, pkt->typ (), pkt->src (), pkt->dst ());
357	else	581	else
358	{	582	{
359	connection *c = conns[src - 1];	583	connection *c = conns[src - 1];
360		584
361	if (dst == 0)	585	if (dst == 0)
362	slog (L_WARN, _("%s(%s): received broadcast (protocol violation)"),	586	slog (L_WARN, _("%s(%s): received broadcast (protocol violation)."),
363	c->conf->nodename, (const char *)rsi);	587	c->conf->nodename, (const char *)rsi);
364	else if (dst != 0 && dst != THISNODE->id)	588	else if (dst != THISNODE->id)
365	{	589	{
366	if (THISNODE->routerprio)	590	if (THISNODE->routerprio)
367	// the tos setting gets lost here. who cares.	591	// the tos setting gets lost here. who cares.
368	conns[dst - 1]->inject_vpn_packet (pkt);	592	conns[dst - 1]->inject_vpn_packet (pkt);
369	else	593	else
370	slog (L_WARN,	594	slog (L_WARN,
371	_("%s(%s): forwarding request (=> %s), but we are no router"),	595	_("%s(%s): request to forward packet to %s, but we are no router (config mismatch?)."),
372	c->conf->nodename, (const char *)rsi,	596	c->conf->nodename, (const char *)rsi,
373	conns[dst - 1]->conf->nodename);	597	conns[dst - 1]->conf->nodename);
374	}	598	}
375	else	599	else
376	c->recv_vpn_packet (pkt, rsi);	600	c->recv_vpn_packet (pkt, rsi);
377	}	601	}
378	}	602	}
379		603
380	void	604	bool
		605	vpn::send_vpn_packet (vpn_packet *pkt, const sockinfo &si, int tos)
		606	{
		607	switch (si.prot)
		608	{
		609	case PROT_IPv4:
		610	return send_ipv4_packet (pkt, si, tos);
		611
		612	case PROT_UDPv4:
		613	return send_udpv4_packet (pkt, si, tos);
		614
		615	#if ENABLE_TCP
		616	case PROT_TCPv4:
		617	return send_tcpv4_packet (pkt, si, tos);
		618	#endif
		619	#if ENABLE_ICMP
		620	case PROT_ICMPv4:
		621	return send_icmpv4_packet (pkt, si, tos);
		622	#endif
		623	#if ENABLE_DNS
		624	case PROT_DNSv4:
		625	return send_dnsv4_packet (pkt, si, tos);
		626	#endif
		627	default:
		628	slog (L_CRIT, _("%s: FATAL: trying to send packet with unsupported protocol."), (const char *)si);
		629	}
		630
		631	return false;
		632	}
		633
		634	inline void
381	vpn::ipv4_ev (io_watcher &w, short revents)	635	vpn::ipv4_ev (ev::io &w, int revents)
382	{	636	{
383	if (revents & (POLLIN \| POLLERR))	637	if (revents & EV_READ)
384	{	638	{
385	vpn_packet *pkt = new vpn_packet;	639	vpn_packet *pkt = new vpn_packet;
386	struct sockaddr_in sa;	640	struct sockaddr_in sa;
387	socklen_t sa_len = sizeof (sa);	641	socklen_t sa_len = sizeof (sa);
388	int len;	642	int len;
…		…
393		647
394	if (len > 0)	648	if (len > 0)
395	{	649	{
396	pkt->len = len;	650	pkt->len = len;
397		651
398	// raw sockets deliver the ipv4, but don't expect it on sends	652	// raw sockets deliver the ipv4 header, but don't expect it on sends
399	// this is slow, but...	653	pkt->skip_hdr (pkt->ipv4_hdr_len ());
400	pkt->skip_hdr (IP_OVERHEAD);
401		654
402	recv_vpn_packet (pkt, si);	655	recv_vpn_packet (pkt, si);
403	}	656	}
404	else	657	else
405	{	658	{
406	// probably ECONNRESET or somesuch	659	// probably ECONNRESET or somesuch
407	slog (L_DEBUG, _("%s: %s"), (const char *)si, strerror (errno));	660	slog (L_DEBUG, _("%s: %s."), (const char *)si, strerror (errno));
408	}	661	}
409		662
410	delete pkt;	663	delete pkt;
411	}	664	}
412	else if (revents & POLLHUP)
413	{
414	// this cannot ;) happen on udp sockets
415	slog (L_ERR, _("FATAL: POLLHUP on ipv4 fd, terminating."));
416	exit (1);
417	}
418	else	665	else
419	{	666	{
420	slog (L_ERR,	667	slog (L_ERR,
421	_("FATAL: unknown revents %08x in socket, terminating\n"),	668	_("FATAL: unknown revents %08x in socket, exiting.\n"),
422	revents);	669	revents);
423	exit (1);	670	exit (EXIT_FAILURE);
424	}	671	}
425	}	672	}
426		673
427	#if ENABLE_ICMP	674	#if ENABLE_ICMP
428	void	675	inline void
429	vpn::icmpv4_ev (io_watcher &w, short revents)	676	vpn::icmpv4_ev (ev::io &w, int revents)
430	{	677	{
431	if (revents & (POLLIN \| POLLERR))	678	if (revents & EV_READ)
432	{	679	{
433	vpn_packet *pkt = new vpn_packet;	680	vpn_packet *pkt = new vpn_packet;
434	struct sockaddr_in sa;	681	struct sockaddr_in sa;
435	socklen_t sa_len = sizeof (sa);	682	socklen_t sa_len = sizeof (sa);
436	int len;	683	int len;
…		…
448	if (hdr->type == ::conf.icmp_type	695	if (hdr->type == ::conf.icmp_type
449	&& hdr->code == 255)	696	&& hdr->code == 255)
450	{	697	{
451	// raw sockets deliver the ipv4, but don't expect it on sends	698	// raw sockets deliver the ipv4, but don't expect it on sends
452	// this is slow, but...	699	// this is slow, but...
453	pkt->skip_hdr (ICMP_OVERHEAD);	700	pkt->skip_hdr (pkt->ipv4_hdr_len () + (ICMP_OVERHEAD - IP_OVERHEAD));
454		701
455	recv_vpn_packet (pkt, si);	702	recv_vpn_packet (pkt, si);
456	}	703	}
457	}	704	}
458	else	705	else
459	{	706	{
460	// probably ECONNRESET or somesuch	707	// probably ECONNRESET or somesuch
461	slog (L_DEBUG, _("%s: %s"), (const char *)si, strerror (errno));	708	slog (L_DEBUG, _("%s: %s."), (const char *)si, strerror (errno));
462	}	709	}
463		710
464	delete pkt;	711	delete pkt;
465	}	712	}
466	else if (revents & POLLHUP)
467	{
468	// this cannot ;) happen on udp sockets
469	slog (L_ERR, _("FATAL: POLLHUP on icmpv4 fd, terminating."));
470	exit (1);
471	}
472	else	713	else
473	{	714	{
474	slog (L_ERR,	715	slog (L_ERR,
475	_("FATAL: unknown revents %08x in socket, terminating\n"),	716	_("FATAL: unknown revents %08x in socket, exiting.\n"),
476	revents);	717	revents);
477	exit (1);	718	exit (EXIT_FAILURE);
478	}	719	}
479	}	720	}
480	#endif	721	#endif
481		722
482	void	723	inline void
483	vpn::udpv4_ev (io_watcher &w, short revents)	724	vpn::udpv4_ev (ev::io &w, int revents)
484	{	725	{
485	if (revents & (POLLIN \| POLLERR))	726	if (revents & EV_READ)
486	{	727	{
487	vpn_packet *pkt = new vpn_packet;	728	vpn_packet *pkt = new vpn_packet;
488	struct sockaddr_in sa;	729	struct sockaddr_in sa;
489	socklen_t sa_len = sizeof (sa);	730	socklen_t sa_len = sizeof (sa);
490	int len;	731	int len;
…		…
500	recv_vpn_packet (pkt, si);	741	recv_vpn_packet (pkt, si);
501	}	742	}
502	else	743	else
503	{	744	{
504	// probably ECONNRESET or somesuch	745	// probably ECONNRESET or somesuch
505	slog (L_DEBUG, _("%s: fd %d, %s"), (const char *)si, w.fd, strerror (errno));	746	slog (L_DEBUG, _("%s: fd %d, %s."), (const char *)si, w.fd, strerror (errno));
506	}	747	}
507		748
508	delete pkt;	749	delete pkt;
509	}	750	}
510	else if (revents & POLLHUP)
511	{
512	// this cannot ;) happen on udp sockets
513	slog (L_ERR, _("FATAL: POLLHUP on udp v4 fd, terminating."));
514	exit (1);
515	}
516	else	751	else
517	{	752	{
518	slog (L_ERR,	753	slog (L_ERR,
519	_("FATAL: unknown revents %08x in socket, terminating\n"),	754	_("FATAL: unknown revents %08x in socket, exiting.\n"),
520	revents);	755	revents);
521	exit (1);	756	exit (EXIT_FAILURE);
522	}	757	}
523	}	758	}
524		759
525	void	760	inline void
526	vpn::tap_ev (io_watcher &w, short revents)	761	vpn::tap_ev (ev::io &w, int revents)
527	{	762	{
528	if (revents & POLLIN)	763	if (revents & EV_READ)
529	{	764	{
530	/* process data */	765	/* process data */
531	tap_packet *pkt;	766	tap_packet *pkt;
532		767
533	pkt = tap->recv ();	768	pkt = tap->recv ();
534		769
		770	if (!pkt)
		771	return;
		772
		773	if (pkt->len > 14)
		774	{
535	int dst = mac2id (pkt->dst);	775	int dst = mac2id (pkt->dst);
536	int src = mac2id (pkt->src);	776	int src = mac2id (pkt->src);
537		777
538	if (src != THISNODE->id)	778	if (src != THISNODE->id)
539	{
540	slog (L_ERR, _("FATAL: tap packet not originating on current node received, exiting."));
541	exit (1);
542	}
543
544	if (dst == THISNODE->id)
545	{
546	slog (L_ERR, _("FATAL: tap packet destined for current node received, exiting."));
547	exit (1);
548	}
549
550	if (dst > conns.size ())
551	slog (L_ERR, _("tap packet for unknown node %d received, ignoring."), dst);
552	else
553	{
554	if (dst)
555	{	779	{
556	// unicast	780	slog (L_ERR, _("FATAL: tap packet not originating on current node received (if-up script not working properly?), exiting."));
557	if (dst != THISNODE->id)	781	exit (EXIT_FAILURE);
558	conns[dst - 1]->inject_data_packet (pkt);
559	}	782	}
		783
		784	if (dst == THISNODE->id)
		785	{
		786	slog (L_ERR, _("FATAL: tap packet destined for current node received, exiting."));
		787	exit (EXIT_FAILURE);
		788	}
		789
		790	if (dst > conns.size ())
		791	slog (L_ERR, _("tap packet for unknown node %d received, ignoring."), dst);
560	else	792	else
561	{
562	// broadcast, this is ugly, but due to the security policy
563	// we have to connect to all hosts...
564	for (conns_vector::iterator c = conns.begin (); c != conns.end (); ++c)
565	if ((*c)->conf != THISNODE)
566	(*c)->inject_data_packet (pkt);	793	inject_data_packet (pkt, dst);
567	}
568	}	794	}
569		795
570	delete pkt;	796	delete pkt;
571	}
572	else if (revents & (POLLHUP \| POLLERR))
573	{
574	slog (L_ERR, _("FATAL: POLLHUP or POLLERR on network device fd, terminating."));
575	exit (1);
576	}	797	}
577	else	798	else
578	abort ();	799	abort ();
579	}	800	}
580		801
581	void	802	inline void
582	vpn::event_cb (time_watcher &w)	803	vpn::event_cb (ev::timer &w, int)
583	{	804	{
584	if (events)	805	if (events)
585	{	806	{
586	if (events & EVENT_SHUTDOWN)	807	if (events & EVENT_SHUTDOWN)
587	{	808	{
588	slog (L_INFO, _("preparing shutdown..."));	809	slog (L_INFO, _("preparing shutdown..."));
589		810
590	shutdown_all ();	811	shutdown_all ();
591
592	remove_pid (pidfilename);	812	remove_pid (conf.pidfilename);
593
594	slog (L_INFO, _("terminating"));	813	slog (L_INFO, _("exiting."));
595		814	exit (EXIT_SUCCESS);
596	exit (0);
597	}	815	}
598		816
599	if (events & EVENT_RECONNECT)	817	if (events & EVENT_RECONNECT)
600	{	818	{
601	slog (L_INFO, _("forced reconnect"));	819	slog (L_INFO, _("forced reconnect."));
602		820
603	reconnect_all ();	821	reconnect_all ();
604	}	822	}
605		823
606	events = 0;	824	events = 0;
607	}	825	}
608
609	w.at = TSTAMP_CANCEL;
610	}	826	}
611		827
612	void	828	void
613	vpn::shutdown_all ()	829	vpn::shutdown_all ()
614	{	830	{
…		…
624		840
625	conns.clear ();	841	conns.clear ();
626		842
627	connection_init ();	843	connection_init ();
628		844
629	for (configuration::node_vector::iterator i = conf.nodes.begin ();	845	for (configuration::node_vector::iterator i = conf.nodes.begin (); i != conf.nodes.end (); ++i)
630	i != conf.nodes.end (); ++i)	846	conns.push_back (new connection (this, *i));
631	{
632	connection *conn = new connection (this);
633		847
634	conn->conf = *i;	848	for (conns_vector::iterator c = conns.begin (); c != conns.end (); ++c)
635	conns.push_back (conn);
636
637	conn->establish_connection ();	849	(*c)->establish_connection ();
638	}
639	}	850	}
640		851
641	connection *vpn::find_router ()	852	bool
		853	vpn::can_direct (conf_node src, conf_node dst) const
642	{	854	{
643	u32 prio = 1;	855	return src != dst
		856	&& src->may_direct (dst)
		857	&& dst->may_direct (src)
		858	&& (((src->protocols & dst->protocols) && src->connectmode == conf_node::C_ALWAYS)
		859	\|\| (src->protocols & dst->connectable_protocols ()));
		860	}
		861
		862	// only works for indirect and routed connections: find a router
		863	// from THISNODE to dst
		864	connection *
		865	vpn::find_router_for (const connection *dst)
		866	{
644	connection *router = 0;	867	connection *router = 0;
645		868
		869	// first try to find a router with a direct connection, route there
		870	// regardless of any other considerations.
		871	{
		872	u32 prio = 1;
		873
		874	for (conns_vector::iterator i = conns.begin (); i != conns.end (); ++i)
		875	{
		876	connection c = i;
		877
		878	if (c->conf->routerprio > prio
		879	&& c->conf != THISNODE
		880	&& can_direct (c->conf, dst->conf)
		881	&& c->ictx && c->octx)
		882	{
		883	prio = c->conf->routerprio;
		884	router = c;
		885	}
		886	}
		887	}
		888
		889	if (router)
		890	return router;
		891
		892	// second try find the router with the highest priority, higher than ours
		893	{
		894	u32 prio = THISNODE->routerprio ? THISNODE->routerprio : 1;
		895
		896	for (conns_vector::iterator i = conns.begin (); i != conns.end (); ++i)
		897	{
		898	connection c = i;
		899
		900	if (c->conf->routerprio > prio
		901	&& c != dst
		902	&& c->conf != THISNODE
		903	&& c->ictx && c->octx)
		904	{
		905	prio = c->conf->routerprio;
		906	router = c;
		907	}
		908	}
		909	}
		910
		911	return router;
		912	}
		913
		914	void
		915	vpn::connection_established (connection *c)
		916	{
646	for (conns_vector::iterator i = conns.begin (); i != conns.end (); ++i)	917	for (conns_vector::iterator i = conns.begin (); i != conns.end (); ++i)
647	{	918	{
648	connection c = i;	919	connection o = i;
649		920
650	if (c->conf->routerprio > prio	921	if (o->si.valid ()
651	&& c->connectmode == conf_node::C_ALWAYS // so we don't drop the connection if in use	922	&& c->si != o->si
652	&& c->ictx && c->octx	923	&& c == find_router_for (o)
653	&& c->conf != THISNODE) // redundant, since ictx==octx==0 always on thisnode	924	&& !can_direct (THISNODE, o->conf))
654	{
655	prio = c->conf->routerprio;
656	router = c;
657	}	925	{
		926	slog (L_DEBUG, _("%s: can now route packets via %s, re-keying connection."),
		927	o->conf->nodename, c->conf->nodename);
		928	o->rekey ();
		929	}
658	}	930	}
659
660	return router;
661	}	931	}
662		932
		933	void
663	void vpn::send_connect_request (int id)	934	vpn::send_connect_request (connection *c)
664	{	935	{
665	connection *c = find_router ();	936	connection *r = find_router_for (c);
666		937
667	if (c)	938	if (r)
		939	{
		940	slog (L_TRACE, _("%s: no address known, sending mediated connection request via %s."),
		941	c->conf->nodename, r->conf->nodename);
668	c->send_connect_request (id);	942	r->send_connect_request (c->conf->id);
		943	}
669	else	944	else
670	// no router found, aggressively connect to all routers	945	slog (L_DEBUG, _("%s: no way to connect and no router found: unable to connect at this time."),
671	for (conns_vector::iterator i = conns.begin (); i != conns.end (); ++i)	946	c->conf->nodename);
672	if ((i)->conf->routerprio && (i)->conf != THISNODE)
673	(*i)->establish_connection ();
674	}	947	}
675		948
676	void	949	void
677	connection::dump_status ()	950	connection::dump_status ()
678	{	951	{
679	slog (L_NOTICE, _("node %s (id %d)"), conf->nodename, conf->id);	952	slog (L_NOTICE, _("node %s (id %d)"), conf->nodename, conf->id);
680	slog (L_NOTICE, _(" connectmode %d (%d) / sockaddr %s / minor %d"),	953	slog (L_NOTICE, _(" connectmode %d (%d) / sockaddr %s / minor %d"),
681	connectmode, conf->connectmode, (const char *)si, (int)prot_minor);	954	connectmode, conf->connectmode, (const char *)si, (int)prot_minor);
682	slog (L_NOTICE, _(" ictx/octx %08lx/%08lx / oseqno %d / retry_cnt %d"),	955	slog (L_NOTICE, _(" ictx/octx %08lx/%08lx / oseqno %d / retry_cnt %d"),
683	(long)ictx, (long)octx, (int)oseqno, (int)retry_cnt);	956	(long)ictx, (long)octx, (int)oseqno, (int)retry_cnt);
684	slog (L_NOTICE, _(" establish_conn %ld / rekey %ld / keepalive %ld"),
685	(long)(establish_connection.at), (long)(rekey.at), (long)(keepalive.at));
686	}	957	}
687		958
688	void	959	void
689	vpn::dump_status ()	960	vpn::dump_status ()
690	{	961	{
691	slog (L_NOTICE, _("BEGIN status dump (%ld)"), (long)NOW);	962	slog (L_NOTICE, _("BEGIN status dump (%ld)"), (long)ev_now ());
692		963
693	for (conns_vector::iterator c = conns.begin (); c != conns.end (); ++c)	964	for (conns_vector::iterator c = conns.begin (); c != conns.end (); ++c)
694	(*c)->dump_status ();	965	(*c)->dump_status ();
695		966
696	slog (L_NOTICE, _("END status dump"));	967	slog (L_NOTICE, _("END status dump"));
697	}	968	}
698		969
699	vpn::vpn (void)	970	vpn::vpn (void)
		971	{
700	: event (this, &vpn::event_cb)	972	event .set<vpn, &vpn::event_cb > (this);
701	, udpv4_ev_watcher (this, &vpn::udpv4_ev)	973	udpv4_ev_watcher .set<vpn, &vpn::udpv4_ev > (this);
702	, ipv4_ev_watcher (this, &vpn::ipv4_ev)	974	ipv4_ev_watcher .set<vpn, &vpn::ipv4_ev > (this);
703	#if ENABLE_TCP	975	#if ENABLE_TCP
704	, tcpv4_ev_watcher (this, &vpn::tcpv4_ev)	976	tcpv4_ev_watcher .set<vpn, &vpn::tcpv4_ev > (this);
705	#endif	977	#endif
706	#if ENABLE_ICMP	978	#if ENABLE_ICMP
707	, icmpv4_ev_watcher(this, &vpn::icmpv4_ev)	979	icmpv4_ev_watcher.set<vpn, &vpn::icmpv4_ev> (this);
708	#endif	980	#endif
709	, tap_ev_watcher (this, &vpn::tap_ev)	981	#if ENABLE_DNS
710	{	982	dnsv4_ev_watcher .set<vpn, &vpn::dnsv4_ev > (this);
		983	#endif
		984	tap_ev_watcher .set<vpn, &vpn::tap_ev > (this);
711	}	985	}
712		986
713	vpn::~vpn ()	987	vpn::~vpn ()
714	{	988	{
715	}	989	}

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Comparing gvpe/src/vpn.C (file contents): Revision 1.15 by pcg, Tue Oct 14 15:48:15 2003 UTC vs. Revision 1.70 by root, Thu Oct 6 03:03:09 2022 UTC

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Comparing gvpe/src/vpn.C (file contents):
Revision 1.15 by pcg, Tue Oct 14 15:48:15 2003 UTC vs.
Revision 1.70 by root, Thu Oct 6 03:03:09 2022 UTC