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

Comparing gvpe/src/vpn.C (file contents):
Revision 1.18 by pcg, Thu Oct 16 02:28:36 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) 2003-2008,2010,2011,2013 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/wait.h>	42	#include <sys/wait.h>
		43	#include <sys/stat.h>
30	#include <errno.h>	44	#include <errno.h>
31	#include <time.h>	45	#include <time.h>
32	#include <unistd.h>	46	#include <unistd.h>
33	#include <fcntl.h>	47	#include <fcntl.h>
34	#include <sys/socket.h>	48	#include <sys/socket.h>
39		53
40	#include "connection.h"	54	#include "connection.h"
41	#include "util.h"	55	#include "util.h"
42	#include "vpn.h"	56	#include "vpn.h"
43		57
		58	using namespace std;
		59
		60	vpn network; // THE vpn (bad design...)
		61
44	/////////////////////////////////////////////////////////////////////////////	62	/////////////////////////////////////////////////////////////////////////////
45		63
46	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 ()
47	{	104	{
48	// the tunnel device mtu should be the physical mtu - overhead	105	// the tunnel device mtu should be the physical mtu - overhead
49	// the tricky part is rounding to the cipher key blocksize	106	// the tricky part is rounding to the cipher key blocksize
50	int mtu = conf.mtu - ETH_OVERHEAD - VPE_OVERHEAD - MAX_OVERHEAD;	107	int mtu = conf.mtu - ETH_OVERHEAD - VPE_OVERHEAD - MAX_OVERHEAD;
51	mtu += ETH_OVERHEAD - 6 - 6; // now we have the data portion	108	mtu += ETH_OVERHEAD - 6 - 6; // now we have the data portion
52	mtu -= mtu % EVP_CIPHER_block_size (CIPHER); // round	109	mtu -= mtu % BLOCK_SIZE (CIPHER); // round
53	mtu -= ETH_OVERHEAD - 6 - 6; // and get interface mtu again	110	mtu -= ETH_OVERHEAD - 6 - 6; // and get interface mtu again
54		111
55	char *env;	112	char *env;
56	asprintf (&env, "CONFBASE=%s", confbase);	113	asprintf (&env, "CONFBASE=%s", confbase); putenv (env);
57	putenv (env);
58	asprintf (&env, "NODENAME=%s", THISNODE->nodename);
59	putenv (env);
60	asprintf (&env, "NODEID=%d", THISNODE->id);
61	putenv (env);
62	asprintf (&env, "IFNAME=%s", tap->interface ());	114	asprintf (&env, "IFNAME=%s", tap->interface ()); putenv (env);
63	putenv (env);	115	asprintf (&env, "IFTYPE=%s", IFTYPE); putenv (env);
		116	asprintf (&env, "IFSUBTYPE=%s", IFSUBTYPE); putenv (env);
64	asprintf (&env, "MTU=%d", mtu);	117	asprintf (&env, "MTU=%d", mtu); putenv (env);
65	putenv (env);	118	asprintf (&env, "NODES=%d", conns.size ()); putenv (env);
66	asprintf (&env, "MAC=%02x:%02x:%02x:%02x:%02x:%02x",	119	asprintf (&env, "NODEID=%d", THISNODE->id); putenv (env);
67	0xfe, 0xfd, 0x80, 0x00, THISNODE->id >> 8,
68	THISNODE->id & 0xff);
69	putenv (env);
70		120
71	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;
72	}	168	}
73		169
74	int	170	int
75	vpn::setup ()	171	vpn::setup ()
76	{	172	{
		173	int success = 0;
		174
		175	ipv4_tos = -1;
77	ipv4_fd = -1;	176	ipv4_fd = -1;
78		177
79	if (THISNODE->protocols & PROT_IPv4 && ::conf.ip_proto)	178	if (THISNODE->protocols & PROT_IPv4 && ::conf.ip_proto)
80	{	179	{
81	ipv4_fd = socket (PF_INET, SOCK_RAW, ::conf.ip_proto);	180	ipv4_fd = setup_socket (PROT_IPv4, PF_INET, SOCK_RAW, ::conf.ip_proto);
82		181
83	if (ipv4_fd < 0)	182	if (ipv4_fd < 0)
84	return -1;	183	return -1;
85
86	fcntl (ipv4_fd, F_SETFL, O_NONBLOCK);
87		184
88	#if defined(SOL_IP) && defined(IP_MTU_DISCOVER)	185	#if defined(SOL_IP) && defined(IP_MTU_DISCOVER)
89	// this I really consider a linux bug. I am neither connected	186	// this I really consider a linux bug. I am neither connected
90	// 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
91	// fragment for me sometimes.	188	// fragment for me sometimes.
…		…
97		194
98	sockinfo si (THISNODE, PROT_IPv4);	195	sockinfo si (THISNODE, PROT_IPv4);
99		196
100	if (bind (ipv4_fd, si.sav4 (), si.salenv4 ()))	197	if (bind (ipv4_fd, si.sav4 (), si.salenv4 ()))
101	{	198	{
102	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));
103	exit (1);	200	return -1;
104	}	201	}
105		202
106	ipv4_ev_watcher.start (ipv4_fd, POLLIN);	203	ipv4_ev_watcher.start (ipv4_fd, EV_READ);
		204	++success;
107	}	205	}
		206	else
		207	THISNODE->protocols &= ~PROT_IPv4;
108		208
		209	udpv4_tos = -1;
109	udpv4_fd = -1;	210	udpv4_fd = -1;
110		211
111	if (THISNODE->protocols & PROT_UDPv4 && THISNODE->udp_port)	212	if (THISNODE->protocols & PROT_UDPv4 && THISNODE->udp_port)
112	{	213	{
113	udpv4_fd = socket (PF_INET, SOCK_DGRAM, IPPROTO_UDP);	214	udpv4_fd = setup_socket (PROT_UDPv4, PF_INET, SOCK_DGRAM, IPPROTO_UDP);
114		215
115	if (udpv4_fd < 0)	216	if (udpv4_fd < 0)
116	return -1;	217	return -1;
117
118	fcntl (udpv4_fd, F_SETFL, O_NONBLOCK);
119		218
120	// standard daemon practise...	219	// standard daemon practise...
121	{	220	{
122	int oval = 1;	221	int oval = 1;
123	setsockopt (udpv4_fd, SOL_SOCKET, SO_REUSEADDR, &oval, sizeof oval);	222	setsockopt (udpv4_fd, SOL_SOCKET, SO_REUSEADDR, &oval, sizeof oval);
…		…
135		234
136	sockinfo si (THISNODE, PROT_UDPv4);	235	sockinfo si (THISNODE, PROT_UDPv4);
137		236
138	if (bind (udpv4_fd, si.sav4 (), si.salenv4 ()))	237	if (bind (udpv4_fd, si.sav4 (), si.salenv4 ()))
139	{	238	{
140	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));
141	exit (1);	240	return -1;
142	}	241	}
143		242
144	udpv4_ev_watcher.start (udpv4_fd, POLLIN);	243	udpv4_ev_watcher.start (udpv4_fd, EV_READ);
		244	++success;
145	}	245	}
		246	else
		247	THISNODE->protocols &= ~PROT_UDPv4;
146		248
		249	icmpv4_tos = -1;
147	icmpv4_fd = -1;	250	icmpv4_fd = -1;
148		251
149	#if ENABLE_ICMP	252	#if ENABLE_ICMP
150	if (THISNODE->protocols & PROT_ICMPv4)	253	if (THISNODE->protocols & PROT_ICMPv4)
151	{	254	{
152	icmpv4_fd = socket (PF_INET, SOCK_RAW, IPPROTO_ICMP);	255	icmpv4_fd = setup_socket (PROT_ICMPv4, PF_INET, SOCK_RAW, IPPROTO_ICMP);
153		256
154	if (icmpv4_fd < 0)	257	if (icmpv4_fd < 0)
155	return -1;	258	return -1;
156		259
157	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
158		264
159	#ifdef ICMP_FILTER	265	#ifdef ICMP_FILTER
160	{	266	{
161	icmp_filter oval;	267	uint32_t oval;
162	oval.data = 0xffffffff;	268	oval = 0;
163	if (::conf.icmp_type < 32)	269	if (::conf.icmp_type < 32)
164	oval.data &= ~(1 << ::conf.icmp_type);	270	oval \|= 1 << ::conf.icmp_type;
		271	oval = ~oval;
165		272
166	setsockopt (icmpv4_fd, SOL_RAW, ICMP_FILTER, &oval, sizeof oval);	273	setsockopt (icmpv4_fd, SOL_RAW, ICMP_FILTER, &oval, sizeof oval);
167	}	274	}
168	#endif	275	#endif
169		276
…		…
171	// this I really consider a linux bug. I am neither connected	278	// this I really consider a linux bug. I am neither connected
172	// 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
173	// fragment for me sometimes.	280	// fragment for me sometimes.
174	{	281	{
175	int oval = IP_PMTUDISC_DONT;	282	int oval = IP_PMTUDISC_DONT;
176	setsockopt (udpv4_fd, SOL_IP, IP_MTU_DISCOVER, &oval, sizeof oval);	283	setsockopt (icmpv4_fd, SOL_IP, IP_MTU_DISCOVER, &oval, sizeof oval);
177	}	284	}
178	#endif	285	#endif
179		286
180	sockinfo si (THISNODE, PROT_ICMPv4);	287	sockinfo si (THISNODE, PROT_ICMPv4);
181		288
182	if (bind (icmpv4_fd, si.sav4 (), si.salenv4 ()))	289	if (bind (icmpv4_fd, si.sav4 (), si.salenv4 ()))
183	{	290	{
184	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));
185	exit (1);	292	return -1;
186	}	293	}
187		294
188	icmpv4_ev_watcher.start (icmpv4_fd, POLLIN);	295	icmpv4_ev_watcher.start (icmpv4_fd, EV_READ);
		296	++success;
189	}	297	}
190	#endif	298	#endif
191		299
192	tcpv4_fd = -1;	300	tcpv4_fd = -1;
193		301
194	#if ENABLE_TCP	302	#if ENABLE_TCP
195	if (THISNODE->protocols & PROT_TCPv4 && THISNODE->tcp_port)	303	if (THISNODE->protocols & PROT_TCPv4 && THISNODE->tcp_port)
196	{	304	{
197	tcpv4_fd = socket (PF_INET, SOCK_STREAM, IPPROTO_TCP);	305	tcpv4_fd = setup_socket (PROT_TCPv4, PF_INET, SOCK_STREAM, IPPROTO_TCP);
198		306
199	if (tcpv4_fd < 0)	307	if (tcpv4_fd < 0)
200	return -1;	308	return -1;
201		309
202	fcntl (tcpv4_fd, F_SETFL, O_NONBLOCK);
203
204	// standard daemon practise...	310	// standard daemon practise...
205	{	311	{
206	int oval = 1;	312	int oval = 1;
207	setsockopt (tcpv4_fd, SOL_SOCKET, SO_REUSEADDR, &oval, sizeof oval);	313	setsockopt (tcpv4_fd, SOL_SOCKET, SO_REUSEADDR, &oval, sizeof oval);
208	}	314	}
209		315
210	sockinfo si (THISNODE, PROT_TCPv4);	316	sockinfo si (THISNODE, PROT_TCPv4);
211		317
212	if (bind (tcpv4_fd, si.sav4 (), si.salenv4 ()))	318	if (bind (tcpv4_fd, si.sav4 (), si.salenv4 ()))
213	{	319	{
214	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));
215	exit (1);	321	return -1;
216	}	322	}
217		323
218	if (listen (tcpv4_fd, 5))	324	if (listen (tcpv4_fd, 5))
219	{	325	{
220	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));
221	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);
222	}	357	}
223
224	tcpv4_ev_watcher.start (tcpv4_fd, POLLIN);
225	}
226	#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	/////////////////////////////////////////////////////////////////////////////
227		392
228	tap = new tap_device ();	393	tap = new tap_device ();
229	if (!tap) //D this, of course, never catches	394	if (!tap) //D this, of course, never catches
230	{	395	{
231	slog (L_ERR, _("cannot create network interface '%s'"), conf.ifname);	396	slog (L_ERR, _("cannot create network interface '%s'."), conf.ifname);
232	exit (1);	397	return -1;
233	}	398	}
234		399
235	run_script (run_script_cb (this, &vpn::script_if_up), true);	400	fcntl (tap->fd, F_SETFD, FD_CLOEXEC);
236		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
237	tap_ev_watcher.start (tap->fd, POLLIN);	420	tap_ev_watcher.start (tap->fd, EV_READ);
238
239	reconnect_all ();
240		421
241	return 0;	422	return 0;
242	}	423	}
243		424
244	// send a vpn packet out to other hosts
245	bool	425	bool
246	vpn::send_vpn_packet (vpn_packet *pkt, const sockinfo &si, int tos)	426	vpn::drop_privileges ()
247	{	427	{
248	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))
249	{	478	{
250	case PROT_IPv4:	479	slog (L_CRIT, _("unable to change group id to %d."), ::conf.change_gid);
251	return send_ipv4_packet (pkt, si, tos);
252
253	case PROT_UDPv4:
254	return send_udpv4_packet (pkt, si, tos);
255
256	#if ENABLE_TCP
257	case PROT_TCPv4:
258	return send_tcpv4_packet (pkt, si, tos);
259	#endif
260
261	#if ENABLE_ICMP
262	case PROT_ICMPv4:
263	return send_icmpv4_packet (pkt, si, tos);
264	#endif
265
266	default:
267	slog (L_CRIT, _("%s: FATAL: trying to send packet with unsupported protocol"), (const char *)si);
268	return false;	480	return false;
269	}	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;
270	}	491	}
271		492
272	bool	493	bool
273	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)
274	{	495	{
275	#if defined(SOL_IP) && defined(IP_TOS)	496	set_tos (ipv4_fd, ipv4_tos, tos);
276	setsockopt (ipv4_fd, SOL_IP, IP_TOS, &tos, sizeof tos);
277	#endif
278	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 ());
279		498
280	return true;	499	return true;
281	}	500	}
282		501
283	static u16	502	static u16
…		…
305		524
306	#if ENABLE_ICMP	525	#if ENABLE_ICMP
307	bool	526	bool
308	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)
309	{	528	{
310	#if defined(SOL_IP) && defined(IP_TOS)
311	setsockopt (icmpv4_fd, SOL_IP, IP_TOS, &tos, sizeof tos);
312	#endif
313
314	pkt->unshift_hdr (4);	529	pkt->unshift_hdr (4);
315		530
316	icmp_header hdr = (icmp_header )&((*pkt)[0]);	531	icmp_header hdr = (icmp_header )&((*pkt)[0]);
317	hdr->type = ::conf.icmp_type;	532	hdr->type = ::conf.icmp_type;
318	hdr->code = 255;	533	hdr->code = 255;
319	hdr->checksum = 0;	534	hdr->checksum = 0;
320	hdr->checksum = ipv4_checksum ((u16 *)hdr, pkt->len);	535	hdr->checksum = ipv4_checksum ((u16 *)hdr, pkt->len);
321		536
		537	set_tos (icmpv4_fd, icmpv4_tos, tos);
322	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 ());
323		539
324	return true;	540	return true;
325	}	541	}
326	#endif	542	#endif
327		543
328	bool	544	bool
329	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)
330	{	546	{
331	#if defined(SOL_IP) && defined(IP_TOS)	547	set_tos (udpv4_fd, udpv4_tos, tos);
332	setsockopt (udpv4_fd, SOL_IP, IP_TOS, &tos, sizeof tos);
333	#endif
334	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 ());
335		549
336	return true;	550	return true;
337	}	551	}
338		552
339	void	553	void
…		…
349	{	563	{
350	// broadcast, this is ugly, but due to the security policy	564	// broadcast, this is ugly, but due to the security policy
351	// we have to connect to all hosts...	565	// we have to connect to all hosts...
352	for (conns_vector::iterator c = conns.begin (); c != conns.end (); ++c)	566	for (conns_vector::iterator c = conns.begin (); c != conns.end (); ++c)
353	if ((*c)->conf != THISNODE)	567	if ((*c)->conf != THISNODE)
354	(*c)->inject_data_packet (pkt, true);	568	(*c)->inject_data_packet (pkt);
355	}	569	}
356	}	570	}
357		571
358	void	572	void
359	vpn::recv_vpn_packet (vpn_packet *pkt, const sockinfo &rsi)	573	vpn::recv_vpn_packet (vpn_packet *pkt, const sockinfo &rsi)
360	{	574	{
361	unsigned int src = pkt->src ();	575	unsigned int src = pkt->src ();
362	unsigned int dst = pkt->dst ();	576	unsigned int dst = pkt->dst ();
363		577
364	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."),
365	(const char *)rsi, pkt->typ (), pkt->src (), pkt->dst (), pkt->len);	579	(const char *)rsi, pkt->typ (), pkt->src (), pkt->dst (), pkt->len);
366		580
367	if (src == 0 \|\| src > conns.size ()	581	if (src == 0 \|\| src > conns.size ()
368	\|\| dst > conns.size ()	582	\|\| dst > conns.size ()
369	\|\| pkt->typ () >= vpn_packet::PT_MAX)	583	\|\| pkt->typ () >= vpn_packet::PT_MAX)
370	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)."),
371	(const char *)rsi, pkt->typ (), pkt->src (), pkt->dst ());
372	else if (dst > conns.size ())
373	slog (L_WARN, _("(%s): received corrupted packet type %d (src %d, dst %d)"),
374	(const char *)rsi, pkt->typ (), pkt->src (), pkt->dst ());	585	(const char *)rsi, pkt->typ (), pkt->src (), pkt->dst ());
375	else	586	else
376	{	587	{
377	connection *c = conns[src - 1];	588	connection *c = conns[src - 1];
378		589
379	if (dst == 0)	590	if (dst == 0)
380	slog (L_WARN, _("%s(%s): received broadcast (protocol violation)"),	591	slog (L_WARN, _("%s(%s): received broadcast (protocol violation)."),
381	c->conf->nodename, (const char *)rsi);	592	c->conf->nodename, (const char *)rsi);
382	else if (dst != THISNODE->id)	593	else if (dst != THISNODE->id)
383	{	594	{
384	if (THISNODE->routerprio)	595	if (THISNODE->routerprio)
385	// the tos setting gets lost here. who cares.	596	// the tos setting gets lost here. who cares.
386	conns[dst - 1]->inject_vpn_packet (pkt);	597	conns[dst - 1]->inject_vpn_packet (pkt);
387	else	598	else
388	slog (L_WARN,	599	slog (L_WARN,
389	_("%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?)."),
390	c->conf->nodename, (const char *)rsi,	601	c->conf->nodename, (const char *)rsi,
391	conns[dst - 1]->conf->nodename);	602	conns[dst - 1]->conf->nodename);
392	}	603	}
393	else	604	else
394	c->recv_vpn_packet (pkt, rsi);	605	c->recv_vpn_packet (pkt, rsi);
395	}	606	}
396	}	607	}
397		608
398	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
399	vpn::ipv4_ev (io_watcher &w, short revents)	640	vpn::ipv4_ev (ev::io &w, int revents)
400	{	641	{
401	if (revents & (POLLIN \| POLLERR))	642	if (revents & EV_READ)
402	{	643	{
403	vpn_packet *pkt = new vpn_packet;	644	vpn_packet *pkt = new vpn_packet;
404	struct sockaddr_in sa;	645	struct sockaddr_in sa;
405	socklen_t sa_len = sizeof (sa);	646	socklen_t sa_len = sizeof (sa);
406	int len;	647	int len;
…		…
411		652
412	if (len > 0)	653	if (len > 0)
413	{	654	{
414	pkt->len = len;	655	pkt->len = len;
415		656
416	// 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
417	// this is slow, but...	658	pkt->skip_hdr (pkt->ipv4_hdr_len ());
418	pkt->skip_hdr (IP_OVERHEAD);
419		659
420	recv_vpn_packet (pkt, si);	660	recv_vpn_packet (pkt, si);
421	}	661	}
422	else	662	else
423	{	663	{
424	// probably ECONNRESET or somesuch	664	// probably ECONNRESET or somesuch
425	slog (L_DEBUG, _("%s: %s"), (const char *)si, strerror (errno));	665	slog (L_DEBUG, _("%s: %s."), (const char *)si, strerror (errno));
426	}	666	}
427		667
428	delete pkt;	668	delete pkt;
429	}	669	}
430	else if (revents & POLLHUP)
431	{
432	// this cannot ;) happen on udp sockets
433	slog (L_ERR, _("FATAL: POLLHUP on ipv4 fd, terminating."));
434	exit (1);
435	}
436	else	670	else
437	{	671	{
438	slog (L_ERR,	672	slog (L_ERR,
439	_("FATAL: unknown revents %08x in socket, terminating\n"),	673	_("FATAL: unknown revents %08x in socket, exiting.\n"),
440	revents);	674	revents);
441	exit (1);	675	exit (EXIT_FAILURE);
442	}	676	}
443	}	677	}
444		678
445	#if ENABLE_ICMP	679	#if ENABLE_ICMP
446	void	680	inline void
447	vpn::icmpv4_ev (io_watcher &w, short revents)	681	vpn::icmpv4_ev (ev::io &w, int revents)
448	{	682	{
449	if (revents & (POLLIN \| POLLERR))	683	if (revents & EV_READ)
450	{	684	{
451	vpn_packet *pkt = new vpn_packet;	685	vpn_packet *pkt = new vpn_packet;
452	struct sockaddr_in sa;	686	struct sockaddr_in sa;
453	socklen_t sa_len = sizeof (sa);	687	socklen_t sa_len = sizeof (sa);
454	int len;	688	int len;
…		…
466	if (hdr->type == ::conf.icmp_type	700	if (hdr->type == ::conf.icmp_type
467	&& hdr->code == 255)	701	&& hdr->code == 255)
468	{	702	{
469	// 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
470	// this is slow, but...	704	// this is slow, but...
471	pkt->skip_hdr (ICMP_OVERHEAD);	705	pkt->skip_hdr (pkt->ipv4_hdr_len () + (ICMP_OVERHEAD - IP_OVERHEAD));
472		706
473	recv_vpn_packet (pkt, si);	707	recv_vpn_packet (pkt, si);
474	}	708	}
475	}	709	}
476	else	710	else
477	{	711	{
478	// probably ECONNRESET or somesuch	712	// probably ECONNRESET or somesuch
479	slog (L_DEBUG, _("%s: %s"), (const char *)si, strerror (errno));	713	slog (L_DEBUG, _("%s: %s."), (const char *)si, strerror (errno));
480	}	714	}
481		715
482	delete pkt;	716	delete pkt;
483	}	717	}
484	else if (revents & POLLHUP)
485	{
486	// this cannot ;) happen on udp sockets
487	slog (L_ERR, _("FATAL: POLLHUP on icmpv4 fd, terminating."));
488	exit (1);
489	}
490	else	718	else
491	{	719	{
492	slog (L_ERR,	720	slog (L_ERR,
493	_("FATAL: unknown revents %08x in socket, terminating\n"),	721	_("FATAL: unknown revents %08x in socket, exiting.\n"),
494	revents);	722	revents);
495	exit (1);	723	exit (EXIT_FAILURE);
496	}	724	}
497	}	725	}
498	#endif	726	#endif
499		727
500	void	728	inline void
501	vpn::udpv4_ev (io_watcher &w, short revents)	729	vpn::udpv4_ev (ev::io &w, int revents)
502	{	730	{
503	if (revents & (POLLIN \| POLLERR))	731	if (revents & EV_READ)
504	{	732	{
505	vpn_packet *pkt = new vpn_packet;	733	vpn_packet *pkt = new vpn_packet;
506	struct sockaddr_in sa;	734	struct sockaddr_in sa;
507	socklen_t sa_len = sizeof (sa);	735	socklen_t sa_len = sizeof (sa);
508	int len;	736	int len;
…		…
518	recv_vpn_packet (pkt, si);	746	recv_vpn_packet (pkt, si);
519	}	747	}
520	else	748	else
521	{	749	{
522	// probably ECONNRESET or somesuch	750	// probably ECONNRESET or somesuch
523	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));
524	}	752	}
525		753
526	delete pkt;	754	delete pkt;
527	}	755	}
528	else if (revents & POLLHUP)
529	{
530	// this cannot ;) happen on udp sockets
531	slog (L_ERR, _("FATAL: POLLHUP on udp v4 fd, terminating."));
532	exit (1);
533	}
534	else	756	else
535	{	757	{
536	slog (L_ERR,	758	slog (L_ERR,
537	_("FATAL: unknown revents %08x in socket, terminating\n"),	759	_("FATAL: unknown revents %08x in socket, exiting.\n"),
538	revents);	760	revents);
539	exit (1);	761	exit (EXIT_FAILURE);
540	}	762	}
541	}	763	}
542		764
543	void	765	inline void
544	vpn::tap_ev (io_watcher &w, short revents)	766	vpn::tap_ev (ev::io &w, int revents)
545	{	767	{
546	if (revents & POLLIN)	768	if (revents & EV_READ)
547	{	769	{
548	/* process data */	770	/* process data */
549	tap_packet *pkt;	771	tap_packet *pkt;
550		772
551	pkt = tap->recv ();	773	pkt = tap->recv ();
…		…
558	int dst = mac2id (pkt->dst);	780	int dst = mac2id (pkt->dst);
559	int src = mac2id (pkt->src);	781	int src = mac2id (pkt->src);
560		782
561	if (src != THISNODE->id)	783	if (src != THISNODE->id)
562	{	784	{
563	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."));
564	exit (1);	786	exit (EXIT_FAILURE);
565	}	787	}
566		788
567	if (dst == THISNODE->id)	789	if (dst == THISNODE->id)
568	{	790	{
569	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."));
570	exit (1);	792	exit (EXIT_FAILURE);
571	}	793	}
572		794
573	if (dst > conns.size ())	795	if (dst > conns.size ())
574	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);
575	else	797	else
576	inject_data_packet (pkt, dst);	798	inject_data_packet (pkt, dst);
577	}	799	}
578		800
579	delete pkt;	801	delete pkt;
580	}	802	}
581	else if (revents & (POLLHUP \| POLLERR))
582	{
583	slog (L_ERR, _("FATAL: POLLHUP or POLLERR on network device fd, terminating."));
584	exit (1);
585	}
586	else	803	else
587	abort ();	804	abort ();
588	}	805	}
589		806
590	void	807	inline void
591	vpn::event_cb (time_watcher &w)	808	vpn::event_cb (ev::timer &w, int)
592	{	809	{
593	if (events)	810	if (events)
594	{	811	{
595	if (events & EVENT_SHUTDOWN)	812	if (events & EVENT_SHUTDOWN)
596	{	813	{
597	slog (L_INFO, _("preparing shutdown..."));	814	slog (L_INFO, _("preparing shutdown..."));
598		815
599	shutdown_all ();	816	shutdown_all ();
600
601	remove_pid (pidfilename);	817	remove_pid (conf.pidfilename);
602
603	slog (L_INFO, _("terminating"));	818	slog (L_INFO, _("exiting."));
604		819	exit (EXIT_SUCCESS);
605	exit (0);
606	}	820	}
607		821
608	if (events & EVENT_RECONNECT)	822	if (events & EVENT_RECONNECT)
609	{	823	{
610	slog (L_INFO, _("forced reconnect"));	824	slog (L_INFO, _("forced reconnect."));
611		825
612	reconnect_all ();	826	reconnect_all ();
613	}	827	}
614		828
615	events = 0;	829	events = 0;
616	}	830	}
617
618	w.at = TSTAMP_CANCEL;
619	}	831	}
620		832
621	void	833	void
622	vpn::shutdown_all ()	834	vpn::shutdown_all ()
623	{	835	{
…		…
633		845
634	conns.clear ();	846	conns.clear ();
635		847
636	connection_init ();	848	connection_init ();
637		849
638	for (configuration::node_vector::iterator i = conf.nodes.begin ();	850	for (configuration::node_vector::iterator i = conf.nodes.begin (); i != conf.nodes.end (); ++i)
639	i != conf.nodes.end (); ++i)	851	conns.push_back (new connection (this, *i));
640	{
641	connection *conn = new connection (this);
642		852
643	conn->conf = *i;	853	for (conns_vector::iterator c = conns.begin (); c != conns.end (); ++c)
644	conns.push_back (conn);
645
646	conn->establish_connection ();	854	(*c)->establish_connection ();
647	}
648	}	855	}
649		856
650	connection *vpn::find_router ()	857	bool
		858	vpn::can_direct (conf_node src, conf_node dst) const
651	{	859	{
652	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	{
653	connection *router = 0;	872	connection *router = 0;
654		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	{
655	for (conns_vector::iterator i = conns.begin (); i != conns.end (); ++i)	922	for (conns_vector::iterator i = conns.begin (); i != conns.end (); ++i)
656	{	923	{
657	connection c = i;	924	connection o = i;
658		925
659	if (c->conf->routerprio > prio	926	if (o->si.valid ()
660	&& c->connectmode == conf_node::C_ALWAYS // so we don't drop the connection if in use	927	&& c->si != o->si
661	&& c->ictx && c->octx	928	&& c == find_router_for (o)
662	&& c->conf != THISNODE) // redundant, since ictx==octx==0 always on thisnode	929	&& !can_direct (THISNODE, o->conf))
663	{
664	prio = c->conf->routerprio;
665	router = c;
666	}	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	}
667	}	935	}
668
669	return router;
670	}	936	}
671		937
		938	void
672	void vpn::send_connect_request (int id)	939	vpn::send_connect_request (connection *c)
673	{	940	{
674	connection *c = find_router ();	941	connection *r = find_router_for (c);
675		942
676	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);
677	c->send_connect_request (id);	947	r->send_connect_request (c->conf->id);
		948	}
678	else	949	else
679	// 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."),
680	for (conns_vector::iterator i = conns.begin (); i != conns.end (); ++i)	951	c->conf->nodename);
681	if ((i)->conf->routerprio && (i)->conf != THISNODE)
682	(*i)->establish_connection ();
683	}	952	}
684		953
685	void	954	void
686	connection::dump_status ()	955	connection::dump_status ()
687	{	956	{
688	slog (L_NOTICE, _("node %s (id %d)"), conf->nodename, conf->id);	957	slog (L_NOTICE, _("node %s (id %d)"), conf->nodename, conf->id);
689	slog (L_NOTICE, _(" connectmode %d (%d) / sockaddr %s / minor %d"),	958	slog (L_NOTICE, _(" connectmode %d (%d) / sockaddr %s / minor %d"),
690	connectmode, conf->connectmode, (const char *)si, (int)prot_minor);	959	connectmode, conf->connectmode, (const char *)si, (int)prot_minor);
691	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"),
692	(long)ictx, (long)octx, (int)oseqno, (int)retry_cnt);	961	(long)ictx, (long)octx, (int)oseqno, (int)retry_cnt);
693	slog (L_NOTICE, _(" establish_conn %ld / rekey %ld / keepalive %ld"),
694	(long)(establish_connection.at), (long)(rekey.at), (long)(keepalive.at));
695	}	962	}
696		963
697	void	964	void
698	vpn::dump_status ()	965	vpn::dump_status ()
699	{	966	{
700	slog (L_NOTICE, _("BEGIN status dump (%ld)"), (long)NOW);	967	slog (L_NOTICE, _("BEGIN status dump (%ld)"), (long)ev_now ());
701		968
702	for (conns_vector::iterator c = conns.begin (); c != conns.end (); ++c)	969	for (conns_vector::iterator c = conns.begin (); c != conns.end (); ++c)
703	(*c)->dump_status ();	970	(*c)->dump_status ();
704		971
705	slog (L_NOTICE, _("END status dump"));	972	slog (L_NOTICE, _("END status dump"));
706	}	973	}
707		974
708	vpn::vpn (void)	975	vpn::vpn (void)
		976	{
709	: event (this, &vpn::event_cb)	977	event .set<vpn, &vpn::event_cb > (this);
710	, udpv4_ev_watcher (this, &vpn::udpv4_ev)	978	udpv4_ev_watcher .set<vpn, &vpn::udpv4_ev > (this);
711	, ipv4_ev_watcher (this, &vpn::ipv4_ev)	979	ipv4_ev_watcher .set<vpn, &vpn::ipv4_ev > (this);
712	#if ENABLE_TCP	980	#if ENABLE_TCP
713	, tcpv4_ev_watcher (this, &vpn::tcpv4_ev)	981	tcpv4_ev_watcher .set<vpn, &vpn::tcpv4_ev > (this);
714	#endif	982	#endif
715	#if ENABLE_ICMP	983	#if ENABLE_ICMP
716	, icmpv4_ev_watcher(this, &vpn::icmpv4_ev)	984	icmpv4_ev_watcher.set<vpn, &vpn::icmpv4_ev> (this);
717	#endif	985	#endif
718	, tap_ev_watcher (this, &vpn::tap_ev)	986	#if ENABLE_DNS
719	{	987	dnsv4_ev_watcher .set<vpn, &vpn::dnsv4_ev > (this);
		988	#endif
		989	tap_ev_watcher .set<vpn, &vpn::tap_ev > (this);
720	}	990	}
721		991
722	vpn::~vpn ()	992	vpn::~vpn ()
723	{	993	{
724	}	994	}

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Comparing gvpe/src/vpn.C (file contents): Revision 1.18 by pcg, Thu Oct 16 02:28:36 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 1.18 by pcg, Thu Oct 16 02:28:36 2003 UTC vs.
Revision 1.71 by root, Thu Oct 6 03:25:54 2022 UTC