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

Comparing gvpe/src/vpn.C (file contents):
Revision 1.19 by pcg, Thu Oct 16 02:41:21 2003 UTC vs.
Revision 1.71 by root, Thu Oct 6 03:25:54 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 Marc Lehmann <pcg@goof.com>	3	Copyright (C) 2003-2008,2010,2011,2013 Marc Lehmann <gvpe@schmorp.de>
4		4
		5	This file is part of GVPE.
		6
5	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
6	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
7	the Free Software Foundation; either version 2 of the License, or	9	Free Software Foundation; either version 3 of the License, or (at your
8	(at your option) any later version.	10	option) any later version.
9		11
10	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
11	but WITHOUT ANY WARRANTY; without even the implied warranty of	13	WITHOUT ANY WARRANTY; without even the implied warranty of
12	MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the	14	MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General
13	GNU General Public License for more details.	15	Public License for more details.
14		16
15	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
16	along with this program; if not, write to the Free Software	18	with this program; if not, see <http://www.gnu.org/licenses/>.
17	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.
18	*/	30	*/
19		31
20	#include "config.h"	32	#include "config.h"
21		33
22	#include <list>	34	#include <list>
23		35
		36	#include <cstdio>
		37	#include <cstring>
24	#include <cstdlib>	38	#include <cstdlib>
25	#include <cstring>
26	#include <cstdio>
27		39
28	#include <sys/types.h>	40	#include <sys/types.h>
29	#include <sys/socket.h>	41	#include <sys/socket.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);	260	// no clue where trhis is actually defined
		261	#if !defined(ICMP_FILTER) && defined(__linux)
		262	#define ICMP_FILTER 1
		263	#endif
159		264
160	#ifdef ICMP_FILTER	265	#ifdef ICMP_FILTER
161	{	266	{
162	icmp_filter oval;	267	uint32_t oval;
163	oval.data = 0xffffffff;	268	oval = 0;
164	if (::conf.icmp_type < 32)	269	if (::conf.icmp_type < 32)
165	oval.data &= ~(1 << ::conf.icmp_type);	270	oval \|= 1 << ::conf.icmp_type;
		271	oval = ~oval;
166		272
167	setsockopt (icmpv4_fd, SOL_RAW, ICMP_FILTER, &oval, sizeof oval);	273	setsockopt (icmpv4_fd, SOL_RAW, ICMP_FILTER, &oval, sizeof oval);
168	}	274	}
169	#endif	275	#endif
170		276
…		…
172	// this I really consider a linux bug. I am neither connected	278	// this I really consider a linux bug. I am neither connected
173	// nor do I fragment myself. Linux still sets DF and doesn't	279	// nor do I fragment myself. Linux still sets DF and doesn't
174	// fragment for me sometimes.	280	// fragment for me sometimes.
175	{	281	{
176	int oval = IP_PMTUDISC_DONT;	282	int oval = IP_PMTUDISC_DONT;
177	setsockopt (udpv4_fd, SOL_IP, IP_MTU_DISCOVER, &oval, sizeof oval);	283	setsockopt (icmpv4_fd, SOL_IP, IP_MTU_DISCOVER, &oval, sizeof oval);
178	}	284	}
179	#endif	285	#endif
180		286
181	sockinfo si (THISNODE, PROT_ICMPv4);	287	sockinfo si (THISNODE, PROT_ICMPv4);
182		288
183	if (bind (icmpv4_fd, si.sav4 (), si.salenv4 ()))	289	if (bind (icmpv4_fd, si.sav4 (), si.salenv4 ()))
184	{	290	{
185	slog (L_ERR, _("can't bind icmpv4 on %s: %s"), (const char *)si, strerror (errno));	291	slog (L_ERR, _("can't bind icmpv4 on %s: %s, exiting."), (const char *)si, strerror (errno));
186	exit (1);	292	return -1;
187	}	293	}
188		294
189	icmpv4_ev_watcher.start (icmpv4_fd, POLLIN);	295	icmpv4_ev_watcher.start (icmpv4_fd, EV_READ);
		296	++success;
190	}	297	}
191	#endif	298	#endif
192		299
193	tcpv4_fd = -1;	300	tcpv4_fd = -1;
194		301
195	#if ENABLE_TCP	302	#if ENABLE_TCP
196	if (THISNODE->protocols & PROT_TCPv4 && THISNODE->tcp_port)	303	if (THISNODE->protocols & PROT_TCPv4 && THISNODE->tcp_port)
197	{	304	{
198	tcpv4_fd = socket (PF_INET, SOCK_STREAM, IPPROTO_TCP);	305	tcpv4_fd = setup_socket (PROT_TCPv4, PF_INET, SOCK_STREAM, IPPROTO_TCP);
199		306
200	if (tcpv4_fd < 0)	307	if (tcpv4_fd < 0)
201	return -1;	308	return -1;
202		309
203	fcntl (tcpv4_fd, F_SETFL, O_NONBLOCK);
204
205	// standard daemon practise...	310	// standard daemon practise...
206	{	311	{
207	int oval = 1;	312	int oval = 1;
208	setsockopt (tcpv4_fd, SOL_SOCKET, SO_REUSEADDR, &oval, sizeof oval);	313	setsockopt (tcpv4_fd, SOL_SOCKET, SO_REUSEADDR, &oval, sizeof oval);
209	}	314	}
210		315
211	sockinfo si (THISNODE, PROT_TCPv4);	316	sockinfo si (THISNODE, PROT_TCPv4);
212		317
213	if (bind (tcpv4_fd, si.sav4 (), si.salenv4 ()))	318	if (bind (tcpv4_fd, si.sav4 (), si.salenv4 ()))
214	{	319	{
215	slog (L_ERR, _("can't bind tcpv4 on %s: %s"), (const char *)si, strerror (errno));	320	slog (L_ERR, _("can't bind tcpv4 on %s: %s, exiting."), (const char *)si, strerror (errno));
216	exit (1);	321	return -1;
217	}	322	}
218		323
219	if (listen (tcpv4_fd, 5))	324	if (listen (tcpv4_fd, 5))
220	{	325	{
221	slog (L_ERR, _("can't listen tcpv4 on %s: %s"), (const char *)si, strerror (errno));	326	slog (L_ERR, _("can't listen tcpv4 on %s: %s, exiting."), (const char *)si, strerror (errno));
222	exit (1);	327	return -1;
		328	}
		329
		330	tcpv4_ev_watcher.start (tcpv4_fd, EV_READ);
		331	++success;
		332	}
		333	else
		334	THISNODE->protocols &= ~PROT_TCPv4;
		335	#endif
		336
		337	dnsv4_tos = -1;
		338	dnsv4_fd = -1;
		339
		340	#if ENABLE_DNS
		341	if (THISNODE->protocols & PROT_DNSv4)
		342	{
		343	dns_forwarder.set (::conf.dns_forw_host, ::conf.dns_forw_port, PROT_DNSv4);
		344
		345	dnsv4_fd = setup_socket (PROT_DNSv4, PF_INET, SOCK_DGRAM, IPPROTO_UDP);
		346
		347	if (dnsv4_fd < 0)
		348	return -1;
		349
		350	# if defined(SOL_IP) && defined(IP_MTU_DISCOVER)
		351	// this I really consider a linux bug. I am neither connected
		352	// nor do I fragment myself. Linux still sets DF and doesn't
		353	// fragment for me sometimes.
		354	{
		355	int oval = IP_PMTUDISC_DONT;
		356	setsockopt (dnsv4_fd, SOL_IP, IP_MTU_DISCOVER, &oval, sizeof oval);
223	}	357	}
224
225	tcpv4_ev_watcher.start (tcpv4_fd, POLLIN);
226	}
227	#endif	358	# endif
		359
		360	// standard daemon practise...
		361	{
		362	int oval = 1;
		363	setsockopt (dnsv4_fd, SOL_SOCKET, SO_REUSEADDR, &oval, sizeof oval);
		364	}
		365
		366	sockinfo si (THISNODE->dns_hostname,
		367	THISNODE->dns_hostname ? THISNODE->dns_port : 0,
		368	PROT_DNSv4);
		369
		370	if (bind (dnsv4_fd, si.sav4 (), si.salenv4 ()))
		371	{
		372	slog (L_ERR, _("can't bind dnsv4 on %s: %s, exiting."), (const char *)si, strerror (errno));
		373	return -1;
		374	}
		375
		376	dnsv4_ev_watcher.start (dnsv4_fd, EV_READ);
		377	++success;
		378	}
		379	#endif
		380
		381	/////////////////////////////////////////////////////////////////////////////
		382
		383	if (!success)
		384	{
		385	slog (L_ERR, _("no protocols enabled."));
		386	return -1;
		387	}
		388
		389	reconnect_all ();
		390
		391	/////////////////////////////////////////////////////////////////////////////
228		392
229	tap = new tap_device ();	393	tap = new tap_device ();
230	if (!tap) //D this, of course, never catches	394	if (!tap) //D this, of course, never catches
231	{	395	{
232	slog (L_ERR, _("cannot create network interface '%s'"), conf.ifname);	396	slog (L_ERR, _("cannot create network interface '%s'."), conf.ifname);
233	exit (1);	397	return -1;
234	}	398	}
235		399
236	run_script (run_script_cb (this, &vpn::script_if_up), true);	400	fcntl (tap->fd, F_SETFD, FD_CLOEXEC);
237		401
		402	run_script_cb cb;
		403	cb.set<vpn, &vpn::script_if_init> (this);
		404
		405	if (tap->if_up () &&
		406	!run_script (cb, true))
		407	{
		408	slog (L_ERR, _("interface initialization command '%s' failed."),
		409	tap->if_up ());
		410	return -1;
		411	}
		412
		413	cb.set<vpn, &vpn::script_if_up> (this);
		414	if (!run_script (cb, true))
		415	{
		416	slog (L_ERR, _("if-up command execution failed."));
		417	return -1;
		418	}
		419
238	tap_ev_watcher.start (tap->fd, POLLIN);	420	tap_ev_watcher.start (tap->fd, EV_READ);
239
240	reconnect_all ();
241		421
242	return 0;	422	return 0;
243	}	423	}
244		424
245	// send a vpn packet out to other hosts
246	bool	425	bool
247	vpn::send_vpn_packet (vpn_packet *pkt, const sockinfo &si, int tos)	426	vpn::drop_privileges ()
248	{	427	{
249	switch (si.prot)	428	if (::conf.change_root)
		429	{
		430	if (!strcmp (::conf.change_root, "/"))
		431	{
		432	char dir [L_tmpnam];
		433	if (!tmpnam (dir))
		434	{
		435	slog (L_CRIT, _("unable to create anonymous root path."));
		436	return false;
		437	}
		438
		439	if (mkdir (dir, 0700))
		440	{
		441	slog (L_CRIT, _("unable to create anonymous root directory."));
		442	return false;
		443	}
		444
		445	if (chdir (dir))
		446	{
		447	slog (L_CRIT, _("unable to change to anonymous root directory."));
		448	return false;
		449	}
		450
		451	if (rmdir (dir))
		452	slog (L_ERR, _("unable to remove anonymous root directory, continuing."));
		453	}
		454	else
		455	{
		456	if (chdir (::conf.change_root))
		457	{
		458	slog (L_CRIT, _("%s: unable to change to specified root directory."), ::conf.change_root);
		459	return false;
		460	}
		461	}
		462
		463	if (chroot ("."))
		464	{
		465	slog (L_CRIT, _("unable to set new root directory."));
		466	return false;
		467	}
		468
		469	if (chdir ("/"))
		470	{
		471	slog (L_CRIT, _("unable to set cwd to new root directory."));
		472	return false;
		473	}
		474	}
		475
		476	if (::conf.change_gid)
		477	if (setgid (::conf.change_gid))
250	{	478	{
251	case PROT_IPv4:	479	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;	480	return false;
270	}	481	}
		482
		483	if (::conf.change_uid)
		484	if (setuid (::conf.change_uid))
		485	{
		486	slog (L_CRIT, _("unable to change user id to %d."), ::conf.change_uid);
		487	return false;
		488	}
		489
		490	return true;
271	}	491	}
272		492
273	bool	493	bool
274	vpn::send_ipv4_packet (vpn_packet *pkt, const sockinfo &si, int tos)	494	vpn::send_ipv4_packet (vpn_packet *pkt, const sockinfo &si, int tos)
275	{	495	{
276	#if defined(SOL_IP) && defined(IP_TOS)	496	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 ());	497	xsendto (ipv4_fd, &((*pkt)[0]), pkt->len, 0, si.sav4 (), si.salenv4 ());
280		498
281	return true;	499	return true;
282	}	500	}
283		501
284	static u16	502	static u16
…		…
306		524
307	#if ENABLE_ICMP	525	#if ENABLE_ICMP
308	bool	526	bool
309	vpn::send_icmpv4_packet (vpn_packet *pkt, const sockinfo &si, int tos)	527	vpn::send_icmpv4_packet (vpn_packet *pkt, const sockinfo &si, int tos)
310	{	528	{
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);	529	pkt->unshift_hdr (4);
316		530
317	icmp_header hdr = (icmp_header )&((*pkt)[0]);	531	icmp_header hdr = (icmp_header )&((*pkt)[0]);
318	hdr->type = ::conf.icmp_type;	532	hdr->type = ::conf.icmp_type;
319	hdr->code = 255;	533	hdr->code = 255;
320	hdr->checksum = 0;	534	hdr->checksum = 0;
321	hdr->checksum = ipv4_checksum ((u16 *)hdr, pkt->len);	535	hdr->checksum = ipv4_checksum ((u16 *)hdr, pkt->len);
322		536
		537	set_tos (icmpv4_fd, icmpv4_tos, tos);
323	sendto (icmpv4_fd, &((*pkt)[0]), pkt->len, 0, si.sav4 (), si.salenv4 ());	538	xsendto (icmpv4_fd, &((*pkt)[0]), pkt->len, 0, si.sav4 (), si.salenv4 ());
324		539
325	return true;	540	return true;
326	}	541	}
327	#endif	542	#endif
328		543
329	bool	544	bool
330	vpn::send_udpv4_packet (vpn_packet *pkt, const sockinfo &si, int tos)	545	vpn::send_udpv4_packet (vpn_packet *pkt, const sockinfo &si, int tos)
331	{	546	{
332	#if defined(SOL_IP) && defined(IP_TOS)	547	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 ());	548	xsendto (udpv4_fd, &((*pkt)[0]), pkt->len, 0, si.sav4 (), si.salenv4 ());
336		549
337	return true;	550	return true;
338	}	551	}
339		552
340	void	553	void
…		…
350	{	563	{
351	// broadcast, this is ugly, but due to the security policy	564	// broadcast, this is ugly, but due to the security policy
352	// we have to connect to all hosts...	565	// we have to connect to all hosts...
353	for (conns_vector::iterator c = conns.begin (); c != conns.end (); ++c)	566	for (conns_vector::iterator c = conns.begin (); c != conns.end (); ++c)
354	if ((*c)->conf != THISNODE)	567	if ((*c)->conf != THISNODE)
355	(*c)->inject_data_packet (pkt, true);	568	(*c)->inject_data_packet (pkt);
356	}	569	}
357	}	570	}
358		571
359	void	572	void
360	vpn::recv_vpn_packet (vpn_packet *pkt, const sockinfo &rsi)	573	vpn::recv_vpn_packet (vpn_packet *pkt, const sockinfo &rsi)
361	{	574	{
362	unsigned int src = pkt->src ();	575	unsigned int src = pkt->src ();
363	unsigned int dst = pkt->dst ();	576	unsigned int dst = pkt->dst ();
364		577
365	slog (L_NOISE, _("<<?/%s received possible vpn packet type %d from %d to %d, length %d"),	578	slog (L_NOISE, _("<<?/%s received possible vpn packet type %d from %d to %d, length %d."),
366	(const char *)rsi, pkt->typ (), pkt->src (), pkt->dst (), pkt->len);	579	(const char *)rsi, pkt->typ (), pkt->src (), pkt->dst (), pkt->len);
367		580
368	if (src == 0 \|\| src > conns.size ()	581	if (src == 0 \|\| src > conns.size ()
369	\|\| dst > conns.size ()	582	\|\| dst > conns.size ()
370	\|\| pkt->typ () >= vpn_packet::PT_MAX)	583	\|\| pkt->typ () >= vpn_packet::PT_MAX)
371	slog (L_WARN, _("(%s): received corrupted packet type %d (src %d, dst %d)"),	584	slog (L_WARN, _("(%s): received corrupted packet type %d (src %d, dst %d)."),
372	(const char *)rsi, pkt->typ (), pkt->src (), pkt->dst ());
373	else if (dst > conns.size ())
374	slog (L_WARN, _("(%s): received corrupted packet type %d (src %d, dst %d)"),
375	(const char *)rsi, pkt->typ (), pkt->src (), pkt->dst ());	585	(const char *)rsi, pkt->typ (), pkt->src (), pkt->dst ());
376	else	586	else
377	{	587	{
378	connection *c = conns[src - 1];	588	connection *c = conns[src - 1];
379		589
380	if (dst == 0)	590	if (dst == 0)
381	slog (L_WARN, _("%s(%s): received broadcast (protocol violation)"),	591	slog (L_WARN, _("%s(%s): received broadcast (protocol violation)."),
382	c->conf->nodename, (const char *)rsi);	592	c->conf->nodename, (const char *)rsi);
383	else if (dst != THISNODE->id)	593	else if (dst != THISNODE->id)
384	{	594	{
385	if (THISNODE->routerprio)	595	if (THISNODE->routerprio)
386	// the tos setting gets lost here. who cares.	596	// the tos setting gets lost here. who cares.
387	conns[dst - 1]->inject_vpn_packet (pkt);	597	conns[dst - 1]->inject_vpn_packet (pkt);
388	else	598	else
389	slog (L_WARN,	599	slog (L_WARN,
390	_("%s(%s): forwarding request (=> %s), but we are no router"),	600	_("%s(%s): request to forward packet to %s, but we are no router (config mismatch?)."),
391	c->conf->nodename, (const char *)rsi,	601	c->conf->nodename, (const char *)rsi,
392	conns[dst - 1]->conf->nodename);	602	conns[dst - 1]->conf->nodename);
393	}	603	}
394	else	604	else
395	c->recv_vpn_packet (pkt, rsi);	605	c->recv_vpn_packet (pkt, rsi);
396	}	606	}
397	}	607	}
398		608
399	void	609	bool
		610	vpn::send_vpn_packet (vpn_packet *pkt, const sockinfo &si, int tos)
		611	{
		612	switch (si.prot)
		613	{
		614	case PROT_IPv4:
		615	return send_ipv4_packet (pkt, si, tos);
		616
		617	case PROT_UDPv4:
		618	return send_udpv4_packet (pkt, si, tos);
		619
		620	#if ENABLE_TCP
		621	case PROT_TCPv4:
		622	return send_tcpv4_packet (pkt, si, tos);
		623	#endif
		624	#if ENABLE_ICMP
		625	case PROT_ICMPv4:
		626	return send_icmpv4_packet (pkt, si, tos);
		627	#endif
		628	#if ENABLE_DNS
		629	case PROT_DNSv4:
		630	return send_dnsv4_packet (pkt, si, tos);
		631	#endif
		632	default:
		633	slog (L_CRIT, _("%s: FATAL: trying to send packet with unsupported protocol."), (const char *)si);
		634	}
		635
		636	return false;
		637	}
		638
		639	inline void
400	vpn::ipv4_ev (io_watcher &w, short revents)	640	vpn::ipv4_ev (ev::io &w, int revents)
401	{	641	{
402	if (revents & (POLLIN \| POLLERR))	642	if (revents & EV_READ)
403	{	643	{
404	vpn_packet *pkt = new vpn_packet;	644	vpn_packet *pkt = new vpn_packet;
405	struct sockaddr_in sa;	645	struct sockaddr_in sa;
406	socklen_t sa_len = sizeof (sa);	646	socklen_t sa_len = sizeof (sa);
407	int len;	647	int len;
…		…
412		652
413	if (len > 0)	653	if (len > 0)
414	{	654	{
415	pkt->len = len;	655	pkt->len = len;
416		656
417	// raw sockets deliver the ipv4, but don't expect it on sends	657	// raw sockets deliver the ipv4 header, but don't expect it on sends
418	// this is slow, but...	658	pkt->skip_hdr (pkt->ipv4_hdr_len ());
419	pkt->skip_hdr (IP_OVERHEAD);
420		659
421	recv_vpn_packet (pkt, si);	660	recv_vpn_packet (pkt, si);
422	}	661	}
423	else	662	else
424	{	663	{
425	// probably ECONNRESET or somesuch	664	// probably ECONNRESET or somesuch
426	slog (L_DEBUG, _("%s: %s"), (const char *)si, strerror (errno));	665	slog (L_DEBUG, _("%s: %s."), (const char *)si, strerror (errno));
427	}	666	}
428		667
429	delete pkt;	668	delete pkt;
430	}	669	}
431	else if (revents & POLLHUP)
432	{
433	// this cannot ;) happen on udp sockets
434	slog (L_ERR, _("FATAL: POLLHUP on ipv4 fd, terminating."));
435	exit (1);
436	}
437	else	670	else
438	{	671	{
439	slog (L_ERR,	672	slog (L_ERR,
440	_("FATAL: unknown revents %08x in socket, terminating\n"),	673	_("FATAL: unknown revents %08x in socket, exiting.\n"),
441	revents);	674	revents);
442	exit (1);	675	exit (EXIT_FAILURE);
443	}	676	}
444	}	677	}
445		678
446	#if ENABLE_ICMP	679	#if ENABLE_ICMP
447	void	680	inline void
448	vpn::icmpv4_ev (io_watcher &w, short revents)	681	vpn::icmpv4_ev (ev::io &w, int revents)
449	{	682	{
450	if (revents & (POLLIN \| POLLERR))	683	if (revents & EV_READ)
451	{	684	{
452	vpn_packet *pkt = new vpn_packet;	685	vpn_packet *pkt = new vpn_packet;
453	struct sockaddr_in sa;	686	struct sockaddr_in sa;
454	socklen_t sa_len = sizeof (sa);	687	socklen_t sa_len = sizeof (sa);
455	int len;	688	int len;
…		…
467	if (hdr->type == ::conf.icmp_type	700	if (hdr->type == ::conf.icmp_type
468	&& hdr->code == 255)	701	&& hdr->code == 255)
469	{	702	{
470	// raw sockets deliver the ipv4, but don't expect it on sends	703	// raw sockets deliver the ipv4, but don't expect it on sends
471	// this is slow, but...	704	// this is slow, but...
472	pkt->skip_hdr (ICMP_OVERHEAD);	705	pkt->skip_hdr (pkt->ipv4_hdr_len () + (ICMP_OVERHEAD - IP_OVERHEAD));
473		706
474	recv_vpn_packet (pkt, si);	707	recv_vpn_packet (pkt, si);
475	}	708	}
476	}	709	}
477	else	710	else
478	{	711	{
479	// probably ECONNRESET or somesuch	712	// probably ECONNRESET or somesuch
480	slog (L_DEBUG, _("%s: %s"), (const char *)si, strerror (errno));	713	slog (L_DEBUG, _("%s: %s."), (const char *)si, strerror (errno));
481	}	714	}
482		715
483	delete pkt;	716	delete pkt;
484	}	717	}
485	else if (revents & POLLHUP)
486	{
487	// this cannot ;) happen on udp sockets
488	slog (L_ERR, _("FATAL: POLLHUP on icmpv4 fd, terminating."));
489	exit (1);
490	}
491	else	718	else
492	{	719	{
493	slog (L_ERR,	720	slog (L_ERR,
494	_("FATAL: unknown revents %08x in socket, terminating\n"),	721	_("FATAL: unknown revents %08x in socket, exiting.\n"),
495	revents);	722	revents);
496	exit (1);	723	exit (EXIT_FAILURE);
497	}	724	}
498	}	725	}
499	#endif	726	#endif
500		727
501	void	728	inline void
502	vpn::udpv4_ev (io_watcher &w, short revents)	729	vpn::udpv4_ev (ev::io &w, int revents)
503	{	730	{
504	if (revents & (POLLIN \| POLLERR))	731	if (revents & EV_READ)
505	{	732	{
506	vpn_packet *pkt = new vpn_packet;	733	vpn_packet *pkt = new vpn_packet;
507	struct sockaddr_in sa;	734	struct sockaddr_in sa;
508	socklen_t sa_len = sizeof (sa);	735	socklen_t sa_len = sizeof (sa);
509	int len;	736	int len;
…		…
519	recv_vpn_packet (pkt, si);	746	recv_vpn_packet (pkt, si);
520	}	747	}
521	else	748	else
522	{	749	{
523	// probably ECONNRESET or somesuch	750	// probably ECONNRESET or somesuch
524	slog (L_DEBUG, _("%s: fd %d, %s"), (const char *)si, w.fd, strerror (errno));	751	slog (L_DEBUG, _("%s: fd %d, %s."), (const char *)si, w.fd, strerror (errno));
525	}	752	}
526		753
527	delete pkt;	754	delete pkt;
528	}	755	}
529	else if (revents & POLLHUP)
530	{
531	// this cannot ;) happen on udp sockets
532	slog (L_ERR, _("FATAL: POLLHUP on udp v4 fd, terminating."));
533	exit (1);
534	}
535	else	756	else
536	{	757	{
537	slog (L_ERR,	758	slog (L_ERR,
538	_("FATAL: unknown revents %08x in socket, terminating\n"),	759	_("FATAL: unknown revents %08x in socket, exiting.\n"),
539	revents);	760	revents);
540	exit (1);	761	exit (EXIT_FAILURE);
541	}	762	}
542	}	763	}
543		764
544	void	765	inline void
545	vpn::tap_ev (io_watcher &w, short revents)	766	vpn::tap_ev (ev::io &w, int revents)
546	{	767	{
547	if (revents & POLLIN)	768	if (revents & EV_READ)
548	{	769	{
549	/* process data */	770	/* process data */
550	tap_packet *pkt;	771	tap_packet *pkt;
551		772
552	pkt = tap->recv ();	773	pkt = tap->recv ();
…		…
559	int dst = mac2id (pkt->dst);	780	int dst = mac2id (pkt->dst);
560	int src = mac2id (pkt->src);	781	int src = mac2id (pkt->src);
561		782
562	if (src != THISNODE->id)	783	if (src != THISNODE->id)
563	{	784	{
564	slog (L_ERR, _("FATAL: tap packet not originating on current node received, exiting."));	785	slog (L_ERR, _("FATAL: tap packet not originating on current node received (if-up script not working properly?), exiting."));
565	exit (1);	786	exit (EXIT_FAILURE);
566	}	787	}
567		788
568	if (dst == THISNODE->id)	789	if (dst == THISNODE->id)
569	{	790	{
570	slog (L_ERR, _("FATAL: tap packet destined for current node received, exiting."));	791	slog (L_ERR, _("FATAL: tap packet destined for current node received, exiting."));
571	exit (1);	792	exit (EXIT_FAILURE);
572	}	793	}
573		794
574	if (dst > conns.size ())	795	if (dst > conns.size ())
575	slog (L_ERR, _("tap packet for unknown node %d received, ignoring."), dst);	796	slog (L_ERR, _("tap packet for unknown node %d received, ignoring."), dst);
576	else	797	else
577	inject_data_packet (pkt, dst);	798	inject_data_packet (pkt, dst);
578	}	799	}
579		800
580	delete pkt;	801	delete pkt;
581	}	802	}
582	else if (revents & (POLLHUP \| POLLERR))
583	{
584	slog (L_ERR, _("FATAL: POLLHUP or POLLERR on network device fd, terminating."));
585	exit (1);
586	}
587	else	803	else
588	abort ();	804	abort ();
589	}	805	}
590		806
591	void	807	inline void
592	vpn::event_cb (time_watcher &w)	808	vpn::event_cb (ev::timer &w, int)
593	{	809	{
594	if (events)	810	if (events)
595	{	811	{
596	if (events & EVENT_SHUTDOWN)	812	if (events & EVENT_SHUTDOWN)
597	{	813	{
598	slog (L_INFO, _("preparing shutdown..."));	814	slog (L_INFO, _("preparing shutdown..."));
599		815
600	shutdown_all ();	816	shutdown_all ();
601
602	remove_pid (pidfilename);	817	remove_pid (conf.pidfilename);
603
604	slog (L_INFO, _("terminating"));	818	slog (L_INFO, _("exiting."));
605		819	exit (EXIT_SUCCESS);
606	exit (0);
607	}	820	}
608		821
609	if (events & EVENT_RECONNECT)	822	if (events & EVENT_RECONNECT)
610	{	823	{
611	slog (L_INFO, _("forced reconnect"));	824	slog (L_INFO, _("forced reconnect."));
612		825
613	reconnect_all ();	826	reconnect_all ();
614	}	827	}
615		828
616	events = 0;	829	events = 0;
617	}	830	}
618
619	w.at = TSTAMP_CANCEL;
620	}	831	}
621		832
622	void	833	void
623	vpn::shutdown_all ()	834	vpn::shutdown_all ()
624	{	835	{
…		…
634		845
635	conns.clear ();	846	conns.clear ();
636		847
637	connection_init ();	848	connection_init ();
638		849
639	for (configuration::node_vector::iterator i = conf.nodes.begin ();	850	for (configuration::node_vector::iterator i = conf.nodes.begin (); i != conf.nodes.end (); ++i)
640	i != conf.nodes.end (); ++i)	851	conns.push_back (new connection (this, *i));
641	{
642	connection *conn = new connection (this);
643		852
644	conn->conf = *i;	853	for (conns_vector::iterator c = conns.begin (); c != conns.end (); ++c)
645	conns.push_back (conn);
646
647	conn->establish_connection ();	854	(*c)->establish_connection ();
648	}
649	}	855	}
650		856
651	connection *vpn::find_router ()	857	bool
		858	vpn::can_direct (conf_node src, conf_node dst) const
652	{	859	{
653	u32 prio = 1;	860	return src != dst
		861	&& src->may_direct (dst)
		862	&& dst->may_direct (src)
		863	&& (((src->protocols & dst->protocols) && src->connectmode == conf_node::C_ALWAYS)
		864	\|\| (src->protocols & dst->connectable_protocols ()));
		865	}
		866
		867	// only works for indirect and routed connections: find a router
		868	// from THISNODE to dst
		869	connection *
		870	vpn::find_router_for (const connection *dst)
		871	{
654	connection *router = 0;	872	connection *router = 0;
655		873
		874	// first try to find a router with a direct connection, route there
		875	// regardless of any other considerations.
		876	{
		877	u32 prio = 1;
		878
		879	for (conns_vector::iterator i = conns.begin (); i != conns.end (); ++i)
		880	{
		881	connection c = i;
		882
		883	if (c->conf->routerprio > prio
		884	&& c->conf != THISNODE
		885	&& can_direct (c->conf, dst->conf)
		886	&& c->ictx && c->octx)
		887	{
		888	prio = c->conf->routerprio;
		889	router = c;
		890	}
		891	}
		892	}
		893
		894	if (router)
		895	return router;
		896
		897	// second try find the router with the highest priority, higher than ours
		898	{
		899	u32 prio = THISNODE->routerprio ? THISNODE->routerprio : 1;
		900
		901	for (conns_vector::iterator i = conns.begin (); i != conns.end (); ++i)
		902	{
		903	connection c = i;
		904
		905	if (c->conf->routerprio > prio
		906	&& c != dst
		907	&& c->conf != THISNODE
		908	&& c->ictx && c->octx)
		909	{
		910	prio = c->conf->routerprio;
		911	router = c;
		912	}
		913	}
		914	}
		915
		916	return router;
		917	}
		918
		919	void
		920	vpn::connection_established (connection *c)
		921	{
656	for (conns_vector::iterator i = conns.begin (); i != conns.end (); ++i)	922	for (conns_vector::iterator i = conns.begin (); i != conns.end (); ++i)
657	{	923	{
658	connection c = i;	924	connection o = i;
659		925
660	if (c->conf->routerprio > prio	926	if (o->si.valid ()
661	&& c->connectmode == conf_node::C_ALWAYS // so we don't drop the connection if in use	927	&& c->si != o->si
662	&& c->ictx && c->octx	928	&& c == find_router_for (o)
663	&& c->conf != THISNODE) // redundant, since ictx==octx==0 always on thisnode	929	&& !can_direct (THISNODE, o->conf))
664	{
665	prio = c->conf->routerprio;
666	router = c;
667	}	930	{
		931	slog (L_DEBUG, _("%s: can now route packets via %s, re-keying connection."),
		932	o->conf->nodename, c->conf->nodename);
		933	o->rekey ();
		934	}
668	}	935	}
669
670	return router;
671	}	936	}
672		937
		938	void
673	void vpn::send_connect_request (int id)	939	vpn::send_connect_request (connection *c)
674	{	940	{
675	connection *c = find_router ();	941	connection *r = find_router_for (c);
676		942
677	if (c)	943	if (r)
		944	{
		945	slog (L_TRACE, _("%s: no address known, sending mediated connection request via %s."),
		946	c->conf->nodename, r->conf->nodename);
678	c->send_connect_request (id);	947	r->send_connect_request (c->conf->id);
		948	}
679	else	949	else
680	// no router found, aggressively connect to all routers	950	slog (L_DEBUG, _("%s: no way to connect and no router found: unable to connect at this time."),
681	for (conns_vector::iterator i = conns.begin (); i != conns.end (); ++i)	951	c->conf->nodename);
682	if ((i)->conf->routerprio && (i)->conf != THISNODE)
683	(*i)->establish_connection ();
684	}	952	}
685		953
686	void	954	void
687	connection::dump_status ()	955	connection::dump_status ()
688	{	956	{
689	slog (L_NOTICE, _("node %s (id %d)"), conf->nodename, conf->id);	957	slog (L_NOTICE, _("node %s (id %d)"), conf->nodename, conf->id);
690	slog (L_NOTICE, _(" connectmode %d (%d) / sockaddr %s / minor %d"),	958	slog (L_NOTICE, _(" connectmode %d (%d) / sockaddr %s / minor %d"),
691	connectmode, conf->connectmode, (const char *)si, (int)prot_minor);	959	connectmode, conf->connectmode, (const char *)si, (int)prot_minor);
692	slog (L_NOTICE, _(" ictx/octx %08lx/%08lx / oseqno %d / retry_cnt %d"),	960	slog (L_NOTICE, _(" ictx/octx %08lx/%08lx / oseqno %d / retry_cnt %d"),
693	(long)ictx, (long)octx, (int)oseqno, (int)retry_cnt);	961	(long)ictx, (long)octx, (int)oseqno, (int)retry_cnt);
694	slog (L_NOTICE, _(" establish_conn %ld / rekey %ld / keepalive %ld"),
695	(long)(establish_connection.at), (long)(rekey.at), (long)(keepalive.at));
696	}	962	}
697		963
698	void	964	void
699	vpn::dump_status ()	965	vpn::dump_status ()
700	{	966	{
701	slog (L_NOTICE, _("BEGIN status dump (%ld)"), (long)NOW);	967	slog (L_NOTICE, _("BEGIN status dump (%ld)"), (long)ev_now ());
702		968
703	for (conns_vector::iterator c = conns.begin (); c != conns.end (); ++c)	969	for (conns_vector::iterator c = conns.begin (); c != conns.end (); ++c)
704	(*c)->dump_status ();	970	(*c)->dump_status ();
705		971
706	slog (L_NOTICE, _("END status dump"));	972	slog (L_NOTICE, _("END status dump"));
707	}	973	}
708		974
709	vpn::vpn (void)	975	vpn::vpn (void)
		976	{
710	: event (this, &vpn::event_cb)	977	event .set<vpn, &vpn::event_cb > (this);
711	, udpv4_ev_watcher (this, &vpn::udpv4_ev)	978	udpv4_ev_watcher .set<vpn, &vpn::udpv4_ev > (this);
712	, ipv4_ev_watcher (this, &vpn::ipv4_ev)	979	ipv4_ev_watcher .set<vpn, &vpn::ipv4_ev > (this);
713	#if ENABLE_TCP	980	#if ENABLE_TCP
714	, tcpv4_ev_watcher (this, &vpn::tcpv4_ev)	981	tcpv4_ev_watcher .set<vpn, &vpn::tcpv4_ev > (this);
715	#endif	982	#endif
716	#if ENABLE_ICMP	983	#if ENABLE_ICMP
717	, icmpv4_ev_watcher(this, &vpn::icmpv4_ev)	984	icmpv4_ev_watcher.set<vpn, &vpn::icmpv4_ev> (this);
718	#endif	985	#endif
719	, tap_ev_watcher (this, &vpn::tap_ev)	986	#if ENABLE_DNS
720	{	987	dnsv4_ev_watcher .set<vpn, &vpn::dnsv4_ev > (this);
		988	#endif
		989	tap_ev_watcher .set<vpn, &vpn::tap_ev > (this);
721	}	990	}
722		991
723	vpn::~vpn ()	992	vpn::~vpn ()
724	{	993	{
725	}	994	}

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Comparing gvpe/src/vpn.C (file contents): Revision 1.19 by pcg, Thu Oct 16 02:41:21 2003 UTC vs. Revision 1.71 by root, Thu Oct 6 03:25:54 2022 UTC

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Comparing gvpe/src/vpn.C (file contents):
Revision 1.19 by pcg, Thu Oct 16 02:41:21 2003 UTC vs.
Revision 1.71 by root, Thu Oct 6 03:25:54 2022 UTC