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

Comparing gvpe/src/vpn.C (file contents):
Revision 1.9 by pcg, Tue Apr 8 02:00:54 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/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 <arpa/inet.h>	47	#include <fcntl.h>
35	#include <netinet/in.h>	48	#include <sys/socket.h>
36	#include <netinet/icmp.h>	49
		50	#include "netcompat.h"
37		51
38	#include "pidfile.h"	52	#include "pidfile.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		184
86	#ifdef IP_MTU_DISCOVER	185	#if defined(SOL_IP) && defined(IP_MTU_DISCOVER)
87	// this I really consider a linux bug. I am neither connected	186	// this I really consider a linux bug. I am neither connected
88	// 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
89	// fragment for me sometimes.	188	// fragment for me sometimes.
90	{	189	{
91	int oval = IP_PMTUDISC_DONT;	190	int oval = IP_PMTUDISC_DONT;
95		194
96	sockinfo si (THISNODE, PROT_IPv4);	195	sockinfo si (THISNODE, PROT_IPv4);
97		196
98	if (bind (ipv4_fd, si.sav4 (), si.salenv4 ()))	197	if (bind (ipv4_fd, si.sav4 (), si.salenv4 ()))
99	{	198	{
100	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));
101	exit (1);	200	return -1;
102	}	201	}
103		202
104	ipv4_ev_watcher.start (ipv4_fd, POLLIN);	203	ipv4_ev_watcher.start (ipv4_fd, EV_READ);
		204	++success;
105	}	205	}
		206	else
		207	THISNODE->protocols &= ~PROT_IPv4;
106		208
		209	udpv4_tos = -1;
107	udpv4_fd = -1;	210	udpv4_fd = -1;
108		211
109	if (THISNODE->protocols & PROT_UDPv4 && THISNODE->udp_port)	212	if (THISNODE->protocols & PROT_UDPv4 && THISNODE->udp_port)
110	{	213	{
111	udpv4_fd = socket (PF_INET, SOCK_DGRAM, IPPROTO_UDP);	214	udpv4_fd = setup_socket (PROT_UDPv4, PF_INET, SOCK_DGRAM, IPPROTO_UDP);
112		215
113	if (udpv4_fd < 0)	216	if (udpv4_fd < 0)
114	return -1;	217	return -1;
115		218
116	// standard daemon practise...	219	// standard daemon practise...
117	{	220	{
118	int oval = 1;	221	int oval = 1;
119	setsockopt (udpv4_fd, SOL_SOCKET, SO_REUSEADDR, &oval, sizeof oval);	222	setsockopt (udpv4_fd, SOL_SOCKET, SO_REUSEADDR, &oval, sizeof oval);
120	}	223	}
121		224
122	#ifdef IP_MTU_DISCOVER	225	#if defined(SOL_IP) && defined(IP_MTU_DISCOVER)
123	// this I really consider a linux bug. I am neither connected	226	// this I really consider a linux bug. I am neither connected
124	// nor do I fragment myself. Linux still sets DF and doesn't	227	// nor do I fragment myself. Linux still sets DF and doesn't
125	// fragment for me sometimes.	228	// fragment for me sometimes.
126	{	229	{
127	int oval = IP_PMTUDISC_DONT;	230	int oval = IP_PMTUDISC_DONT;
…		…
131		234
132	sockinfo si (THISNODE, PROT_UDPv4);	235	sockinfo si (THISNODE, PROT_UDPv4);
133		236
134	if (bind (udpv4_fd, si.sav4 (), si.salenv4 ()))	237	if (bind (udpv4_fd, si.sav4 (), si.salenv4 ()))
135	{	238	{
136	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));
137	exit (1);	240	return -1;
138	}	241	}
139		242
140	udpv4_ev_watcher.start (udpv4_fd, POLLIN);	243	udpv4_ev_watcher.start (udpv4_fd, EV_READ);
		244	++success;
141	}	245	}
		246	else
		247	THISNODE->protocols &= ~PROT_UDPv4;
142		248
		249	icmpv4_tos = -1;
143	icmpv4_fd = -1;	250	icmpv4_fd = -1;
144		251
145	#if ENABLE_ICMP	252	#if ENABLE_ICMP
146	if (THISNODE->protocols & PROT_ICMPv4)	253	if (THISNODE->protocols & PROT_ICMPv4)
147	{	254	{
148	icmpv4_fd = socket (PF_INET, SOCK_RAW, IPPROTO_ICMP);	255	icmpv4_fd = setup_socket (PROT_ICMPv4, PF_INET, SOCK_RAW, IPPROTO_ICMP);
149		256
150	if (icmpv4_fd < 0)	257	if (icmpv4_fd < 0)
151	return -1;	258	return -1;
152		259
		260	// no clue where trhis is actually defined
		261	#if !defined(ICMP_FILTER) && defined(__linux)
		262	#define ICMP_FILTER 1
		263	#endif
		264
153	#ifdef ICMP_FILTER	265	#ifdef ICMP_FILTER
154	{	266	{
155	icmp_filter oval;	267	uint32_t oval;
156	oval.data = 0xffffffff;	268	oval = 0;
157	if (::conf.icmp_type < 32)	269	if (::conf.icmp_type < 32)
158	oval.data &= ~(1 << ::conf.icmp_type);	270	oval \|= 1 << ::conf.icmp_type;
		271	oval = ~oval;
159		272
160	setsockopt (icmpv4_fd, SOL_RAW, ICMP_FILTER, &oval, sizeof oval);	273	setsockopt (icmpv4_fd, SOL_RAW, ICMP_FILTER, &oval, sizeof oval);
161	}	274	}
162	#endif	275	#endif
163		276
164	#ifdef IP_MTU_DISCOVER	277	#if defined(SOL_IP) && defined(IP_MTU_DISCOVER)
165	// this I really consider a linux bug. I am neither connected	278	// this I really consider a linux bug. I am neither connected
166	// 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
167	// fragment for me sometimes.	280	// fragment for me sometimes.
168	{	281	{
169	int oval = IP_PMTUDISC_DONT;	282	int oval = IP_PMTUDISC_DONT;
170	setsockopt (udpv4_fd, SOL_IP, IP_MTU_DISCOVER, &oval, sizeof oval);	283	setsockopt (icmpv4_fd, SOL_IP, IP_MTU_DISCOVER, &oval, sizeof oval);
171	}	284	}
172	#endif	285	#endif
173		286
174	sockinfo si (THISNODE, PROT_ICMPv4);	287	sockinfo si (THISNODE, PROT_ICMPv4);
175		288
176	if (bind (icmpv4_fd, si.sav4 (), si.salenv4 ()))	289	if (bind (icmpv4_fd, si.sav4 (), si.salenv4 ()))
177	{	290	{
178	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));
179	exit (1);	292	return -1;
180	}	293	}
181		294
182	icmpv4_ev_watcher.start (icmpv4_fd, POLLIN);	295	icmpv4_ev_watcher.start (icmpv4_fd, EV_READ);
		296	++success;
183	}	297	}
184	#endif	298	#endif
185		299
186	tcpv4_fd = -1;	300	tcpv4_fd = -1;
187		301
188	#if ENABLE_TCP	302	#if ENABLE_TCP
189	if (THISNODE->protocols & PROT_TCPv4 && THISNODE->tcp_port)	303	if (THISNODE->protocols & PROT_TCPv4 && THISNODE->tcp_port)
190	{	304	{
191	tcpv4_fd = socket (PF_INET, SOCK_STREAM, IPPROTO_TCP);	305	tcpv4_fd = setup_socket (PROT_TCPv4, PF_INET, SOCK_STREAM, IPPROTO_TCP);
192		306
193	if (tcpv4_fd < 0)	307	if (tcpv4_fd < 0)
194	return -1;	308	return -1;
195		309
196	// standard daemon practise...	310	// standard daemon practise...
…		…
201		315
202	sockinfo si (THISNODE, PROT_TCPv4);	316	sockinfo si (THISNODE, PROT_TCPv4);
203		317
204	if (bind (tcpv4_fd, si.sav4 (), si.salenv4 ()))	318	if (bind (tcpv4_fd, si.sav4 (), si.salenv4 ()))
205	{	319	{
206	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));
207	exit (1);	321	return -1;
208	}	322	}
209		323
210	if (listen (tcpv4_fd, 5))	324	if (listen (tcpv4_fd, 5))
211	{	325	{
212	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));
213	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);
214	}	357	}
215
216	tcpv4_ev_watcher.start (tcpv4_fd, POLLIN);
217	}
218	#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	/////////////////////////////////////////////////////////////////////////////
219		392
220	tap = new tap_device ();	393	tap = new tap_device ();
221	if (!tap) //D this, of course, never catches	394	if (!tap) //D this, of course, never catches
222	{	395	{
223	slog (L_ERR, _("cannot create network interface '%s'"), conf.ifname);	396	slog (L_ERR, _("cannot create network interface '%s'."), conf.ifname);
224	exit (1);	397	return -1;
225	}	398	}
226		399
227	run_script (run_script_cb (this, &vpn::script_if_up), true);	400	fcntl (tap->fd, F_SETFD, FD_CLOEXEC);
228		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
229	tap_ev_watcher.start (tap->fd, POLLIN);	420	tap_ev_watcher.start (tap->fd, EV_READ);
230
231	reconnect_all ();
232		421
233	return 0;	422	return 0;
234	}	423	}
235		424
236	// send a vpn packet out to other hosts
237	bool	425	bool
238	vpn::send_vpn_packet (vpn_packet *pkt, const sockinfo &si, int tos)	426	vpn::drop_privileges ()
239	{	427	{
240	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))
241	{	478	{
242	case PROT_IPv4:	479	slog (L_CRIT, _("unable to change group id to %d."), ::conf.change_gid);
243	return send_ipv4_packet (pkt, si, tos);
244
245	case PROT_UDPv4:
246	return send_udpv4_packet (pkt, si, tos);
247
248	#if ENABLE_TCP
249	case PROT_TCPv4:
250	return send_tcpv4_packet (pkt, si, tos);
251	#endif
252
253	#if ENABLE_ICMP
254	case PROT_ICMPv4:
255	return send_icmpv4_packet (pkt, si, tos);
256	#endif
257
258	default:
259	slog (L_CRIT, _("%s: FATAL: trying to send packet with unsupported protocol"), (const char *)si);
260	return false;	480	return false;
261	}	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;
262	}	491	}
263		492
264	bool	493	bool
265	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)
266	{	495	{
267	setsockopt (ipv4_fd, SOL_IP, IP_TOS, &tos, sizeof tos);	496	set_tos (ipv4_fd, ipv4_tos, tos);
268	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 ());
269		498
270	return true;	499	return true;
271	}	500	}
272		501
273	static u16	502	static u16
…		…
291	sum += (sum >> 16); // carry	520	sum += (sum >> 16); // carry
292		521
293	return ~sum;	522	return ~sum;
294	}	523	}
295		524
		525	#if ENABLE_ICMP
296	bool	526	bool
297	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)
298	{	528	{
299	setsockopt (icmpv4_fd, SOL_IP, IP_TOS, &tos, sizeof tos);
300
301	pkt->unshift_hdr (4);	529	pkt->unshift_hdr (4);
302		530
303	icmphdr hdr = (icmphdr )&((*pkt)[0]);	531	icmp_header hdr = (icmp_header )&((*pkt)[0]);
304	hdr->type = ::conf.icmp_type;	532	hdr->type = ::conf.icmp_type;
305	hdr->code = 255;	533	hdr->code = 255;
306	hdr->checksum = 0;	534	hdr->checksum = 0;
307	hdr->checksum = ipv4_checksum ((u16 *)hdr, pkt->len);	535	hdr->checksum = ipv4_checksum ((u16 *)hdr, pkt->len);
308		536
		537	set_tos (icmpv4_fd, icmpv4_tos, tos);
309	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 ());
310		539
311	return true;	540	return true;
312	}	541	}
		542	#endif
313		543
314	bool	544	bool
315	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)
316	{	546	{
317	setsockopt (udpv4_fd, SOL_IP, IP_TOS, &tos, sizeof tos);	547	set_tos (udpv4_fd, udpv4_tos, tos);
318	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 ());
319		549
320	return true;	550	return true;
		551	}
		552
		553	void
		554	vpn::inject_data_packet (tap_packet *pkt, int dst)
		555	{
		556	if (dst)
		557	{
		558	// unicast
		559	if (dst != THISNODE->id)
		560	conns[dst - 1]->inject_data_packet (pkt);
		561	}
		562	else
		563	{
		564	// broadcast, this is ugly, but due to the security policy
		565	// we have to connect to all hosts...
		566	for (conns_vector::iterator c = conns.begin (); c != conns.end (); ++c)
		567	if ((*c)->conf != THISNODE)
		568	(*c)->inject_data_packet (pkt);
		569	}
321	}	570	}
322		571
323	void	572	void
324	vpn::recv_vpn_packet (vpn_packet *pkt, const sockinfo &rsi)	573	vpn::recv_vpn_packet (vpn_packet *pkt, const sockinfo &rsi)
325	{	574	{
326	unsigned int src = pkt->src ();	575	unsigned int src = pkt->src ();
327	unsigned int dst = pkt->dst ();	576	unsigned int dst = pkt->dst ();
328		577
329	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."),
330	(const char *)rsi, pkt->typ (), pkt->src (), pkt->dst (), pkt->len);	579	(const char *)rsi, pkt->typ (), pkt->src (), pkt->dst (), pkt->len);
331		580
332	if (src == 0 \|\| src > conns.size ()	581	if (src == 0 \|\| src > conns.size ()
333	\|\| dst > conns.size ()	582	\|\| dst > conns.size ()
334	\|\| pkt->typ () >= vpn_packet::PT_MAX)	583	\|\| pkt->typ () >= vpn_packet::PT_MAX)
335	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)."),
336	(const char *)rsi, pkt->typ (), pkt->src (), pkt->dst ());
337	else if (dst > conns.size ())
338	slog (L_WARN, _("(%s): received corrupted packet type %d (src %d, dst %d)"),
339	(const char *)rsi, pkt->typ (), pkt->src (), pkt->dst ());	585	(const char *)rsi, pkt->typ (), pkt->src (), pkt->dst ());
340	else	586	else
341	{	587	{
342	connection *c = conns[src - 1];	588	connection *c = conns[src - 1];
343		589
344	if (dst == 0 && !THISNODE->routerprio)	590	if (dst == 0)
345	slog (L_WARN, _("%s(%s): received broadcast, but we are no router"),	591	slog (L_WARN, _("%s(%s): received broadcast (protocol violation)."),
346	c->conf->nodename, (const char *)rsi);	592	c->conf->nodename, (const char *)rsi);
347	else if (dst != 0 && dst != THISNODE->id)	593	else if (dst != THISNODE->id)
348	{	594	{
349	if (THISNODE->routerprio)	595	if (THISNODE->routerprio)
350	// the tos setting gets lost here. who cares.	596	// the tos setting gets lost here. who cares.
351	conns[dst - 1]->inject_vpn_packet (pkt);	597	conns[dst - 1]->inject_vpn_packet (pkt);
352	else	598	else
353	slog (L_WARN,	599	slog (L_WARN,
354	_("%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?)."),
355	c->conf->nodename, (const char *)rsi,	601	c->conf->nodename, (const char *)rsi,
356	conns[dst - 1]->conf->nodename);	602	conns[dst - 1]->conf->nodename);
357	}	603	}
358	else	604	else
359	c->recv_vpn_packet (pkt, rsi);	605	c->recv_vpn_packet (pkt, rsi);
360	}	606	}
361	}	607	}
362		608
363	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
364	vpn::ipv4_ev (io_watcher &w, short revents)	640	vpn::ipv4_ev (ev::io &w, int revents)
365	{	641	{
366	if (revents & (POLLIN \| POLLERR))	642	if (revents & EV_READ)
367	{	643	{
368	vpn_packet *pkt = new vpn_packet;	644	vpn_packet *pkt = new vpn_packet;
369	struct sockaddr_in sa;	645	struct sockaddr_in sa;
370	socklen_t sa_len = sizeof (sa);	646	socklen_t sa_len = sizeof (sa);
371	int len;	647	int len;
…		…
376		652
377	if (len > 0)	653	if (len > 0)
378	{	654	{
379	pkt->len = len;	655	pkt->len = len;
380		656
381	// 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
382	// this is slow, but...	658	pkt->skip_hdr (pkt->ipv4_hdr_len ());
383	pkt->skip_hdr (IP_OVERHEAD);
384		659
385	recv_vpn_packet (pkt, si);	660	recv_vpn_packet (pkt, si);
386	}	661	}
387	else	662	else
388	{	663	{
389	// probably ECONNRESET or somesuch	664	// probably ECONNRESET or somesuch
390	slog (L_DEBUG, _("%s: %s"), (const char *)si, strerror (errno));	665	slog (L_DEBUG, _("%s: %s."), (const char *)si, strerror (errno));
391	}	666	}
392		667
393	delete pkt;	668	delete pkt;
394	}	669	}
395	else if (revents & POLLHUP)
396	{
397	// this cannot ;) happen on udp sockets
398	slog (L_ERR, _("FATAL: POLLHUP on ipv4 fd, terminating."));
399	exit (1);
400	}
401	else	670	else
402	{	671	{
403	slog (L_ERR,	672	slog (L_ERR,
404	_("FATAL: unknown revents %08x in socket, terminating\n"),	673	_("FATAL: unknown revents %08x in socket, exiting.\n"),
405	revents);	674	revents);
406	exit (1);	675	exit (EXIT_FAILURE);
407	}	676	}
408	}	677	}
409		678
410	void	679	#if ENABLE_ICMP
		680	inline void
411	vpn::icmpv4_ev (io_watcher &w, short revents)	681	vpn::icmpv4_ev (ev::io &w, int revents)
412	{	682	{
413	if (revents & (POLLIN \| POLLERR))	683	if (revents & EV_READ)
414	{	684	{
415	vpn_packet *pkt = new vpn_packet;	685	vpn_packet *pkt = new vpn_packet;
416	struct sockaddr_in sa;	686	struct sockaddr_in sa;
417	socklen_t sa_len = sizeof (sa);	687	socklen_t sa_len = sizeof (sa);
418	int len;	688	int len;
…		…
423		693
424	if (len > 0)	694	if (len > 0)
425	{	695	{
426	pkt->len = len;	696	pkt->len = len;
427		697
428	icmphdr hdr = (icmphdr )&((*pkt)[IP_OVERHEAD]);	698	icmp_header hdr = (icmp_header )&((*pkt)[IP_OVERHEAD]);
429		699
430	if (hdr->type == ::conf.icmp_type	700	if (hdr->type == ::conf.icmp_type
431	&& hdr->code == 255)	701	&& hdr->code == 255)
432	{	702	{
433	// 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
434	// this is slow, but...	704	// this is slow, but...
435	pkt->skip_hdr (ICMP_OVERHEAD);	705	pkt->skip_hdr (pkt->ipv4_hdr_len () + (ICMP_OVERHEAD - IP_OVERHEAD));
436		706
437	recv_vpn_packet (pkt, si);	707	recv_vpn_packet (pkt, si);
438	}	708	}
439	}	709	}
440	else	710	else
441	{	711	{
442	// probably ECONNRESET or somesuch	712	// probably ECONNRESET or somesuch
443	slog (L_DEBUG, _("%s: %s"), (const char *)si, strerror (errno));	713	slog (L_DEBUG, _("%s: %s."), (const char *)si, strerror (errno));
444	}	714	}
445		715
446	delete pkt;	716	delete pkt;
447	}	717	}
448	else if (revents & POLLHUP)
449	{
450	// this cannot ;) happen on udp sockets
451	slog (L_ERR, _("FATAL: POLLHUP on icmpv4 fd, terminating."));
452	exit (1);
453	}
454	else	718	else
455	{	719	{
456	slog (L_ERR,	720	slog (L_ERR,
457	_("FATAL: unknown revents %08x in socket, terminating\n"),	721	_("FATAL: unknown revents %08x in socket, exiting.\n"),
458	revents);	722	revents);
459	exit (1);	723	exit (EXIT_FAILURE);
460	}	724	}
461	}	725	}
		726	#endif
462		727
463	void	728	inline void
464	vpn::udpv4_ev (io_watcher &w, short revents)	729	vpn::udpv4_ev (ev::io &w, int revents)
465	{	730	{
466	if (revents & (POLLIN \| POLLERR))	731	if (revents & EV_READ)
467	{	732	{
468	vpn_packet *pkt = new vpn_packet;	733	vpn_packet *pkt = new vpn_packet;
469	struct sockaddr_in sa;	734	struct sockaddr_in sa;
470	socklen_t sa_len = sizeof (sa);	735	socklen_t sa_len = sizeof (sa);
471	int len;	736	int len;
…		…
481	recv_vpn_packet (pkt, si);	746	recv_vpn_packet (pkt, si);
482	}	747	}
483	else	748	else
484	{	749	{
485	// probably ECONNRESET or somesuch	750	// probably ECONNRESET or somesuch
486	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));
487	}	752	}
488		753
489	delete pkt;	754	delete pkt;
490	}	755	}
491	else if (revents & POLLHUP)
492	{
493	// this cannot ;) happen on udp sockets
494	slog (L_ERR, _("FATAL: POLLHUP on udp v4 fd, terminating."));
495	exit (1);
496	}
497	else	756	else
498	{	757	{
499	slog (L_ERR,	758	slog (L_ERR,
500	_("FATAL: unknown revents %08x in socket, terminating\n"),	759	_("FATAL: unknown revents %08x in socket, exiting.\n"),
501	revents);	760	revents);
502	exit (1);	761	exit (EXIT_FAILURE);
503	}	762	}
504	}	763	}
505		764
506	void	765	inline void
507	vpn::tap_ev (io_watcher &w, short revents)	766	vpn::tap_ev (ev::io &w, int revents)
508	{	767	{
509	if (revents & POLLIN)	768	if (revents & EV_READ)
510	{	769	{
511	/* process data */	770	/* process data */
512	tap_packet *pkt;	771	tap_packet *pkt;
513		772
514	pkt = tap->recv ();	773	pkt = tap->recv ();
515		774
		775	if (!pkt)
		776	return;
		777
		778	if (pkt->len > 14)
		779	{
516	int dst = mac2id (pkt->dst);	780	int dst = mac2id (pkt->dst);
517	int src = mac2id (pkt->src);	781	int src = mac2id (pkt->src);
518		782
519	if (src != THISNODE->id)	783	if (src != THISNODE->id)
520	{
521	slog (L_ERR, _("FATAL: tap packet not originating on current node received, terminating."));
522	exit (1);
523	}
524
525	if (dst == THISNODE->id)
526	{
527	slog (L_ERR, _("FATAL: tap packet destined for current node received, terminating."));
528	exit (1);
529	}
530
531	if (dst > conns.size ())
532	slog (L_ERR, _("tap packet for unknown node %d received, ignoring."), dst);
533	else
534	{
535	if (dst)
536	{	784	{
537	// unicast	785	slog (L_ERR, _("FATAL: tap packet not originating on current node received (if-up script not working properly?), exiting."));
538	if (dst != THISNODE->id)	786	exit (EXIT_FAILURE);
539	conns[dst - 1]->inject_data_packet (pkt);
540	}	787	}
		788
		789	if (dst == THISNODE->id)
		790	{
		791	slog (L_ERR, _("FATAL: tap packet destined for current node received, exiting."));
		792	exit (EXIT_FAILURE);
		793	}
		794
		795	if (dst > conns.size ())
		796	slog (L_ERR, _("tap packet for unknown node %d received, ignoring."), dst);
541	else	797	else
542	{
543	// broadcast, first check router, then self, then english
544	connection *router = find_router ();
545
546	if (router)
547	router->inject_data_packet (pkt, true);	798	inject_data_packet (pkt, dst);
548	else
549	for (conns_vector::iterator c = conns.begin (); c != conns.end (); ++c)
550	if ((*c)->conf != THISNODE)
551	(*c)->inject_data_packet (pkt);
552	}
553	}	799	}
554		800
555	delete pkt;	801	delete pkt;
556	}
557	else if (revents & (POLLHUP \| POLLERR))
558	{
559	slog (L_ERR, _("FATAL: POLLHUP or POLLERR on network device fd, terminating."));
560	exit (1);
561	}	802	}
562	else	803	else
563	abort ();	804	abort ();
564	}	805	}
565		806
566	void	807	inline void
567	vpn::event_cb (time_watcher &w)	808	vpn::event_cb (ev::timer &w, int)
568	{	809	{
569	if (events)	810	if (events)
570	{	811	{
571	if (events & EVENT_SHUTDOWN)	812	if (events & EVENT_SHUTDOWN)
572	{	813	{
573	slog (L_INFO, _("preparing shutdown..."));	814	slog (L_INFO, _("preparing shutdown..."));
574		815
575	shutdown_all ();	816	shutdown_all ();
576
577	remove_pid (pidfilename);	817	remove_pid (conf.pidfilename);
578
579	slog (L_INFO, _("terminating"));	818	slog (L_INFO, _("exiting."));
580		819	exit (EXIT_SUCCESS);
581	exit (0);
582	}	820	}
583		821
584	if (events & EVENT_RECONNECT)	822	if (events & EVENT_RECONNECT)
585	{	823	{
586	slog (L_INFO, _("forced reconnect"));	824	slog (L_INFO, _("forced reconnect."));
587		825
588	reconnect_all ();	826	reconnect_all ();
589	}	827	}
590		828
591	events = 0;	829	events = 0;
592	}	830	}
593
594	w.at = TSTAMP_CANCEL;
595	}	831	}
596		832
597	void	833	void
598	vpn::shutdown_all ()	834	vpn::shutdown_all ()
599	{	835	{
…		…
609		845
610	conns.clear ();	846	conns.clear ();
611		847
612	connection_init ();	848	connection_init ();
613		849
614	for (configuration::node_vector::iterator i = conf.nodes.begin ();	850	for (configuration::node_vector::iterator i = conf.nodes.begin (); i != conf.nodes.end (); ++i)
615	i != conf.nodes.end (); ++i)	851	conns.push_back (new connection (this, *i));
616	{
617	connection *conn = new connection (this);
618		852
619	conn->conf = *i;	853	for (conns_vector::iterator c = conns.begin (); c != conns.end (); ++c)
620	conns.push_back (conn);
621
622	conn->establish_connection ();	854	(*c)->establish_connection ();
623	}
624	}	855	}
625		856
626	connection *vpn::find_router ()	857	bool
		858	vpn::can_direct (conf_node src, conf_node dst) const
627	{	859	{
628	u32 prio = 0;	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	{
629	connection *router = 0;	872	connection *router = 0;
630		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	{
631	for (conns_vector::iterator i = conns.begin (); i != conns.end (); ++i)	922	for (conns_vector::iterator i = conns.begin (); i != conns.end (); ++i)
632	{	923	{
633	connection c = i;	924	connection o = i;
634		925
635	if (c->conf->routerprio > prio	926	if (o->si.valid ()
636	&& c->connectmode == conf_node::C_ALWAYS	927	&& c->si != o->si
637	&& c->conf != THISNODE	928	&& c == find_router_for (o)
638	&& c->ictx && c->octx)	929	&& !can_direct (THISNODE, o->conf))
639	{
640	prio = c->conf->routerprio;
641	router = c;
642	}	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	}
643	}	935	}
644
645	return router;
646	}	936	}
647		937
		938	void
648	void vpn::send_connect_request (int id)	939	vpn::send_connect_request (connection *c)
649	{	940	{
650	connection *c = find_router ();	941	connection *r = find_router_for (c);
651		942
652	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);
653	c->send_connect_request (id);	947	r->send_connect_request (c->conf->id);
		948	}
654	else	949	else
655	// 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."),
656	for (conns_vector::iterator i = conns.begin (); i != conns.end (); ++i)	951	c->conf->nodename);
657	if ((*i)->conf->routerprio)
658	(*i)->establish_connection ();
659	}	952	}
660		953
661	void	954	void
662	connection::dump_status ()	955	connection::dump_status ()
663	{	956	{
664	slog (L_NOTICE, _("node %s (id %d)"), conf->nodename, conf->id);	957	slog (L_NOTICE, _("node %s (id %d)"), conf->nodename, conf->id);
665	slog (L_NOTICE, _(" connectmode %d (%d) / sockaddr %s / minor %d"),	958	slog (L_NOTICE, _(" connectmode %d (%d) / sockaddr %s / minor %d"),
666	connectmode, conf->connectmode, (const char *)si, (int)prot_minor);	959	connectmode, conf->connectmode, (const char *)si, (int)prot_minor);
667	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"),
668	(long)ictx, (long)octx, (int)oseqno, (int)retry_cnt);	961	(long)ictx, (long)octx, (int)oseqno, (int)retry_cnt);
669	slog (L_NOTICE, _(" establish_conn %ld / rekey %ld / keepalive %ld"),
670	(long)(establish_connection.at), (long)(rekey.at), (long)(keepalive.at));
671	}	962	}
672		963
673	void	964	void
674	vpn::dump_status ()	965	vpn::dump_status ()
675	{	966	{
676	slog (L_NOTICE, _("BEGIN status dump (%ld)"), (long)NOW);	967	slog (L_NOTICE, _("BEGIN status dump (%ld)"), (long)ev_now ());
677		968
678	for (conns_vector::iterator c = conns.begin (); c != conns.end (); ++c)	969	for (conns_vector::iterator c = conns.begin (); c != conns.end (); ++c)
679	(*c)->dump_status ();	970	(*c)->dump_status ();
680		971
681	slog (L_NOTICE, _("END status dump"));	972	slog (L_NOTICE, _("END status dump"));
682	}	973	}
683		974
684	vpn::vpn (void)	975	vpn::vpn (void)
		976	{
685	: event (this, &vpn::event_cb)	977	event .set<vpn, &vpn::event_cb > (this);
686	, udpv4_ev_watcher (this, &vpn::udpv4_ev)	978	udpv4_ev_watcher .set<vpn, &vpn::udpv4_ev > (this);
687	, ipv4_ev_watcher (this, &vpn::ipv4_ev)	979	ipv4_ev_watcher .set<vpn, &vpn::ipv4_ev > (this);
688	#if ENABLE_TCP	980	#if ENABLE_TCP
689	, tcpv4_ev_watcher (this, &vpn::tcpv4_ev)	981	tcpv4_ev_watcher .set<vpn, &vpn::tcpv4_ev > (this);
690	#endif	982	#endif
691	#if ENABLE_ICMP	983	#if ENABLE_ICMP
692	, icmpv4_ev_watcher(this, &vpn::icmpv4_ev)	984	icmpv4_ev_watcher.set<vpn, &vpn::icmpv4_ev> (this);
693	#endif	985	#endif
694	, tap_ev_watcher (this, &vpn::tap_ev)	986	#if ENABLE_DNS
695	{	987	dnsv4_ev_watcher .set<vpn, &vpn::dnsv4_ev > (this);
		988	#endif
		989	tap_ev_watcher .set<vpn, &vpn::tap_ev > (this);
696	}	990	}
697		991
698	vpn::~vpn ()	992	vpn::~vpn ()
699	{	993	{
700	}	994	}

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Comparing gvpe/src/vpn.C (file contents): Revision 1.9 by pcg, Tue Apr 8 02:00:54 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 1.9 by pcg, Tue Apr 8 02:00:54 2003 UTC vs.
Revision 1.71 by root, Thu Oct 6 03:25:54 2022 UTC