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

Comparing gvpe/src/vpn.C (file contents):
Revision 1.14 by pcg, Tue Oct 14 03:22:09 2003 UTC vs.
Revision 1.70 by root, Thu Oct 6 03:03:09 2022 UTC

…		…
1	/*	1	/*
2	vpn.C -- handle the protocol, encryption, handshaking etc.	2	vpn.C -- handle the protocol, encryption, handshaking etc.
		3	Copyright (C) 2003-2008,2010,2011,2013 Marc Lehmann <gvpe@schmorp.de>
3		4
		5	This file is part of GVPE.
		6
4	This program is free software; you can redistribute it and/or modify	7	GVPE is free software; you can redistribute it and/or modify it
5	it under the terms of the GNU General Public License as published by	8	under the terms of the GNU General Public License as published by the
6	the Free Software Foundation; either version 2 of the License, or	9	Free Software Foundation; either version 3 of the License, or (at your
7	(at your option) any later version.	10	option) any later version.
8		11
9	This program is distributed in the hope that it will be useful,	12	This program is distributed in the hope that it will be useful, but
10	but WITHOUT ANY WARRANTY; without even the implied warranty of	13	WITHOUT ANY WARRANTY; without even the implied warranty of
11	MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the	14	MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General
12	GNU General Public License for more details.	15	Public License for more details.
13		16
14	You should have received a copy of the GNU General Public License	17	You should have received a copy of the GNU General Public License along
15	along with this program; if not, write to the Free Software	18	with this program; if not, see <http://www.gnu.org/licenses/>.
16	Foundation, Inc. 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA	19
		20	Additional permission under GNU GPL version 3 section 7
		21
		22	If you modify this Program, or any covered work, by linking or
		23	combining it with the OpenSSL project's OpenSSL library (or a modified
		24	version of that library), containing parts covered by the terms of the
		25	OpenSSL or SSLeay licenses, the licensors of this Program grant you
		26	additional permission to convey the resulting work. Corresponding
		27	Source for a non-source form of such a combination shall include the
		28	source code for the parts of OpenSSL used as well as that of the
		29	covered work.
17	*/	30	*/
18		31
19	#include "config.h"	32	#include "config.h"
20		33
21	#include <list>	34	#include <list>
22		35
		36	#include <cstdio>
		37	#include <cstring>
23	#include <cstdlib>	38	#include <cstdlib>
24	#include <cstring>
25	#include <cstdio>
26		39
27	#include <sys/types.h>	40	#include <sys/types.h>
28	#include <sys/socket.h>	41	#include <sys/socket.h>
29	#include <sys/poll.h>
30	#include <sys/wait.h>	42	#include <sys/wait.h>
		43	#include <sys/stat.h>
31	#include <errno.h>	44	#include <errno.h>
32	#include <time.h>	45	#include <time.h>
33	#include <unistd.h>	46	#include <unistd.h>
34	#include <fcntl.h>	47	#include <fcntl.h>
35	#include <sys/socket.h>	48	#include <sys/socket.h>
36	#include <netinet/in.h>	49
37	#include <arpa/inet.h>	50	#include "netcompat.h"
38	#include <net/if.h>
39	#ifdef HAVE_NETINET_IN_SYSTM_H
40	# include <netinet/in_systm.h>
41	#endif
42	#ifdef HAVE_NETINET_IP_H
43	# include <netinet/ip.h>
44	#endif
45	#ifdef HAVE_NETINET_TCP_H
46	# include <netinet/tcp.h>
47	#endif
48	#if ENABLE_ICMP
49	# include <netinet/ip_icmp.h>
50	#endif
51		51
52	#include "pidfile.h"	52	#include "pidfile.h"
53		53
54	#include "connection.h"	54	#include "connection.h"
55	#include "util.h"	55	#include "util.h"
56	#include "vpn.h"	56	#include "vpn.h"
57		57
58	#if !defined(SOL_IP) && defined(IPPROTO_IP)	58	using namespace std;
59	# define SOL_IP IPPROTO_IP	59
60	#endif	60	vpn network; // THE vpn (bad design...)
61		61
62	/////////////////////////////////////////////////////////////////////////////	62	/////////////////////////////////////////////////////////////////////////////
63		63
64	const char *vpn::script_if_up ()	64	// hopefully temporary workaround for rare buffer full conditions
		65	// if it happens, usually instantly retrying or retrying ~5ms later
		66	// is good enough with current network technologies/kernels
		67
		68	static ssize_t
		69	xsendto (int fd, const void *buf, size_t len, int flags,
		70	const struct sockaddr *sa, socklen_t salen)
		71	{
		72	ssize_t res;
		73
		74	for (int retry = 0; retry <= 13; ++retry) // ~100ms
		75	{
		76	res = sendto (fd, buf, len, flags, sa, salen);
		77
		78	if (res >= 0 \|\| errno != ENOBUFS)
		79	break;
		80
		81	struct timespec ts = { 0, 1000 * retry };
		82	nanosleep (&ts, 0);
		83	}
		84
		85	return res;
		86	}
		87
		88	/////////////////////////////////////////////////////////////////////////////
		89
		90	static void inline
		91	set_tos (int fd, int &tos_prev, int tos)
		92	{
		93	#if defined(SOL_IP) && defined(IP_TOS)
		94	if (tos_prev == tos)
		95	return;
		96
		97	tos_prev = tos;
		98	setsockopt (fd, SOL_IP, IP_TOS, &tos, sizeof tos);
		99	#endif
		100	}
		101
		102	void
		103	vpn::script_init_env ()
65	{	104	{
66	// the tunnel device mtu should be the physical mtu - overhead	105	// the tunnel device mtu should be the physical mtu - overhead
67	// the tricky part is rounding to the cipher key blocksize	106	// the tricky part is rounding to the cipher key blocksize
68	int mtu = conf.mtu - ETH_OVERHEAD - VPE_OVERHEAD - MAX_OVERHEAD;	107	int mtu = conf.mtu - ETH_OVERHEAD - VPE_OVERHEAD - MAX_OVERHEAD;
69	mtu += ETH_OVERHEAD - 6 - 6; // now we have the data portion	108	mtu += ETH_OVERHEAD - 6 - 6; // now we have the data portion
70	mtu -= mtu % EVP_CIPHER_block_size (CIPHER); // round	109	mtu -= mtu % BLOCK_SIZE (CIPHER); // round
71	mtu -= ETH_OVERHEAD - 6 - 6; // and get interface mtu again	110	mtu -= ETH_OVERHEAD - 6 - 6; // and get interface mtu again
72		111
73	char *env;	112	char *env;
74	asprintf (&env, "CONFBASE=%s", confbase);	113	asprintf (&env, "CONFBASE=%s", confbase); putenv (env);
75	putenv (env);
76	asprintf (&env, "NODENAME=%s", THISNODE->nodename);
77	putenv (env);
78	asprintf (&env, "NODEID=%d", THISNODE->id);
79	putenv (env);
80	asprintf (&env, "IFNAME=%s", tap->interface ());	114	asprintf (&env, "IFNAME=%s", tap->interface ()); putenv (env);
81	putenv (env);	115	asprintf (&env, "IFTYPE=%s", IFTYPE); putenv (env);
		116	asprintf (&env, "IFSUBTYPE=%s", IFSUBTYPE); putenv (env);
82	asprintf (&env, "MTU=%d", mtu);	117	asprintf (&env, "MTU=%d", mtu); putenv (env);
83	putenv (env);	118	asprintf (&env, "NODES=%d", conns.size ()); putenv (env);
84	asprintf (&env, "MAC=%02x:%02x:%02x:%02x:%02x:%02x",	119	asprintf (&env, "NODEID=%d", THISNODE->id); putenv (env);
85	0xfe, 0xfd, 0x80, 0x00, THISNODE->id >> 8,
86	THISNODE->id & 0xff);
87	putenv (env);
88		120
89	return ::conf.script_if_up ? ::conf.script_if_up : "if-up";	121	conns [THISNODE->id - 1]->script_init_env ("");
		122
		123	for (conns_vector::iterator c = conns.begin (); c != conns.end (); ++c)
		124	{
		125	char ext[16];
		126	snprintf (ext, 16, "_%d", (*c)->conf->id);
		127	(*c)->script_init_env (ext);
		128	}
		129	}
		130
		131	inline const char *
		132	vpn::script_if_init ()
		133	{
		134	script_init_env ();
		135
		136	return tap->if_up ();
		137	}
		138
		139	inline const char *
		140	vpn::script_if_up ()
		141	{
		142	script_init_env ();
		143
		144	return conf.config_filename (::conf.script_if_up, "if-up");
		145	}
		146
		147	int
		148	vpn::setup_socket (u8 prot, int family, int type, int proto)
		149	{
		150	int fd = socket (family, type, proto);
		151
		152	if (fd < 0)
		153	{
		154	slog (L_ERR, _("unable to create %s socket: %s."), strprotocol (prot), strerror (errno));
		155	return fd;
		156	}
		157
		158	fcntl (fd, F_SETFL, O_NONBLOCK);
		159	fcntl (fd, F_SETFD, FD_CLOEXEC);
		160
		161	#ifdef SO_MARK
		162	if (::conf.nfmark)
		163	if (setsockopt (fd, SOL_SOCKET, SO_MARK, &::conf.nfmark, sizeof ::conf.nfmark))
		164	slog (L_WARN, _("unable to set nfmark on %s socket: %s"), strprotocol (prot), strerror (errno));
		165	#endif
		166
		167	return fd;
90	}	168	}
91		169
92	int	170	int
93	vpn::setup ()	171	vpn::setup ()
94	{	172	{
		173	int success = 0;
		174
		175	ipv4_tos = -1;
95	ipv4_fd = -1;	176	ipv4_fd = -1;
96		177
97	if (THISNODE->protocols & PROT_IPv4 && ::conf.ip_proto)	178	if (THISNODE->protocols & PROT_IPv4 && ::conf.ip_proto)
98	{	179	{
99	ipv4_fd = socket (PF_INET, SOCK_RAW, ::conf.ip_proto);	180	ipv4_fd = setup_socket (PROT_IPv4, PF_INET, SOCK_RAW, ::conf.ip_proto);
100		181
101	if (ipv4_fd < 0)	182	if (ipv4_fd < 0)
102	return -1;	183	return -1;
103
104	fcntl (ipv4_fd, F_SETFL, O_NONBLOCK);
105		184
106	#if defined(SOL_IP) && defined(IP_MTU_DISCOVER)	185	#if defined(SOL_IP) && defined(IP_MTU_DISCOVER)
107	// this I really consider a linux bug. I am neither connected	186	// this I really consider a linux bug. I am neither connected
108	// nor do I fragment myself. Linux still sets DF and doesn't	187	// nor do I fragment myself. Linux still sets DF and doesn't
109	// fragment for me sometimes.	188	// fragment for me sometimes.
115		194
116	sockinfo si (THISNODE, PROT_IPv4);	195	sockinfo si (THISNODE, PROT_IPv4);
117		196
118	if (bind (ipv4_fd, si.sav4 (), si.salenv4 ()))	197	if (bind (ipv4_fd, si.sav4 (), si.salenv4 ()))
119	{	198	{
120	slog (L_ERR, _("can't bind ipv4 socket on %s: %s"), (const char *)si, strerror (errno));	199	slog (L_ERR, _("can't bind ipv4 socket on %s: %s, exiting."), (const char *)si, strerror (errno));
121	exit (1);	200	return -1;
122	}	201	}
123		202
124	ipv4_ev_watcher.start (ipv4_fd, POLLIN);	203	ipv4_ev_watcher.start (ipv4_fd, EV_READ);
		204	++success;
125	}	205	}
		206	else
		207	THISNODE->protocols &= ~PROT_IPv4;
126		208
		209	udpv4_tos = -1;
127	udpv4_fd = -1;	210	udpv4_fd = -1;
128		211
129	if (THISNODE->protocols & PROT_UDPv4 && THISNODE->udp_port)	212	if (THISNODE->protocols & PROT_UDPv4 && THISNODE->udp_port)
130	{	213	{
131	udpv4_fd = socket (PF_INET, SOCK_DGRAM, IPPROTO_UDP);	214	udpv4_fd = setup_socket (PROT_UDPv4, PF_INET, SOCK_DGRAM, IPPROTO_UDP);
132		215
133	if (udpv4_fd < 0)	216	if (udpv4_fd < 0)
134	return -1;	217	return -1;
135
136	fcntl (udpv4_fd, F_SETFL, O_NONBLOCK);
137		218
138	// standard daemon practise...	219	// standard daemon practise...
139	{	220	{
140	int oval = 1;	221	int oval = 1;
141	setsockopt (udpv4_fd, SOL_SOCKET, SO_REUSEADDR, &oval, sizeof oval);	222	setsockopt (udpv4_fd, SOL_SOCKET, SO_REUSEADDR, &oval, sizeof oval);
…		…
153		234
154	sockinfo si (THISNODE, PROT_UDPv4);	235	sockinfo si (THISNODE, PROT_UDPv4);
155		236
156	if (bind (udpv4_fd, si.sav4 (), si.salenv4 ()))	237	if (bind (udpv4_fd, si.sav4 (), si.salenv4 ()))
157	{	238	{
158	slog (L_ERR, _("can't bind udpv4 on %s: %s"), (const char *)si, strerror (errno));	239	slog (L_ERR, _("can't bind udpv4 on %s: %s, exiting."), (const char *)si, strerror (errno));
159	exit (1);	240	return -1;
160	}	241	}
161		242
162	udpv4_ev_watcher.start (udpv4_fd, POLLIN);	243	udpv4_ev_watcher.start (udpv4_fd, EV_READ);
		244	++success;
163	}	245	}
		246	else
		247	THISNODE->protocols &= ~PROT_UDPv4;
164		248
		249	icmpv4_tos = -1;
165	icmpv4_fd = -1;	250	icmpv4_fd = -1;
166		251
167	#if ENABLE_ICMP	252	#if ENABLE_ICMP
168	if (THISNODE->protocols & PROT_ICMPv4)	253	if (THISNODE->protocols & PROT_ICMPv4)
169	{	254	{
170	icmpv4_fd = socket (PF_INET, SOCK_RAW, IPPROTO_ICMP);	255	icmpv4_fd = setup_socket (PROT_ICMPv4, PF_INET, SOCK_RAW, IPPROTO_ICMP);
171		256
172	if (icmpv4_fd < 0)	257	if (icmpv4_fd < 0)
173	return -1;	258	return -1;
174		259
175	fcntl (icmpv4_fd, F_SETFL, O_NONBLOCK);
176
177	#ifdef ICMP_FILTER	260	#ifdef ICMP_FILTER
178	{	261	{
179	icmp_filter oval;	262	icmp_filter oval;
180	oval.data = 0xffffffff;	263	oval.data = 0;
181	if (::conf.icmp_type < 32)	264	if (::conf.icmp_type < 32)
182	oval.data &= ~(1 << ::conf.icmp_type);	265	oval.data \|= 1 << ::conf.icmp_type;
		266	oval.data = ~oval.data;
183		267
184	setsockopt (icmpv4_fd, SOL_RAW, ICMP_FILTER, &oval, sizeof oval);	268	setsockopt (icmpv4_fd, SOL_RAW, ICMP_FILTER, &oval, sizeof oval);
185	}	269	}
186	#endif	270	#endif
187		271
…		…
189	// this I really consider a linux bug. I am neither connected	273	// this I really consider a linux bug. I am neither connected
190	// nor do I fragment myself. Linux still sets DF and doesn't	274	// nor do I fragment myself. Linux still sets DF and doesn't
191	// fragment for me sometimes.	275	// fragment for me sometimes.
192	{	276	{
193	int oval = IP_PMTUDISC_DONT;	277	int oval = IP_PMTUDISC_DONT;
194	setsockopt (udpv4_fd, SOL_IP, IP_MTU_DISCOVER, &oval, sizeof oval);	278	setsockopt (icmpv4_fd, SOL_IP, IP_MTU_DISCOVER, &oval, sizeof oval);
195	}	279	}
196	#endif	280	#endif
197		281
198	sockinfo si (THISNODE, PROT_ICMPv4);	282	sockinfo si (THISNODE, PROT_ICMPv4);
199		283
200	if (bind (icmpv4_fd, si.sav4 (), si.salenv4 ()))	284	if (bind (icmpv4_fd, si.sav4 (), si.salenv4 ()))
201	{	285	{
202	slog (L_ERR, _("can't bind icmpv4 on %s: %s"), (const char *)si, strerror (errno));	286	slog (L_ERR, _("can't bind icmpv4 on %s: %s, exiting."), (const char *)si, strerror (errno));
203	exit (1);	287	return -1;
204	}	288	}
205		289
206	icmpv4_ev_watcher.start (icmpv4_fd, POLLIN);	290	icmpv4_ev_watcher.start (icmpv4_fd, EV_READ);
		291	++success;
207	}	292	}
208	#endif	293	#endif
209		294
210	tcpv4_fd = -1;	295	tcpv4_fd = -1;
211		296
212	#if ENABLE_TCP	297	#if ENABLE_TCP
213	if (THISNODE->protocols & PROT_TCPv4 && THISNODE->tcp_port)	298	if (THISNODE->protocols & PROT_TCPv4 && THISNODE->tcp_port)
214	{	299	{
215	tcpv4_fd = socket (PF_INET, SOCK_STREAM, IPPROTO_TCP);	300	tcpv4_fd = setup_socket (PROT_TCPv4, PF_INET, SOCK_STREAM, IPPROTO_TCP);
216		301
217	if (tcpv4_fd < 0)	302	if (tcpv4_fd < 0)
218	return -1;	303	return -1;
219		304
220	fcntl (tcpv4_fd, F_SETFL, O_NONBLOCK);
221
222	// standard daemon practise...	305	// standard daemon practise...
223	{	306	{
224	int oval = 1;	307	int oval = 1;
225	setsockopt (tcpv4_fd, SOL_SOCKET, SO_REUSEADDR, &oval, sizeof oval);	308	setsockopt (tcpv4_fd, SOL_SOCKET, SO_REUSEADDR, &oval, sizeof oval);
226	}	309	}
227		310
228	sockinfo si (THISNODE, PROT_TCPv4);	311	sockinfo si (THISNODE, PROT_TCPv4);
229		312
230	if (bind (tcpv4_fd, si.sav4 (), si.salenv4 ()))	313	if (bind (tcpv4_fd, si.sav4 (), si.salenv4 ()))
231	{	314	{
232	slog (L_ERR, _("can't bind tcpv4 on %s: %s"), (const char *)si, strerror (errno));	315	slog (L_ERR, _("can't bind tcpv4 on %s: %s, exiting."), (const char *)si, strerror (errno));
233	exit (1);	316	return -1;
234	}	317	}
235		318
236	if (listen (tcpv4_fd, 5))	319	if (listen (tcpv4_fd, 5))
237	{	320	{
238	slog (L_ERR, _("can't listen tcpv4 on %s: %s"), (const char *)si, strerror (errno));	321	slog (L_ERR, _("can't listen tcpv4 on %s: %s, exiting."), (const char *)si, strerror (errno));
239	exit (1);	322	return -1;
		323	}
		324
		325	tcpv4_ev_watcher.start (tcpv4_fd, EV_READ);
		326	++success;
		327	}
		328	else
		329	THISNODE->protocols &= ~PROT_TCPv4;
		330	#endif
		331
		332	dnsv4_tos = -1;
		333	dnsv4_fd = -1;
		334
		335	#if ENABLE_DNS
		336	if (THISNODE->protocols & PROT_DNSv4)
		337	{
		338	dns_forwarder.set (::conf.dns_forw_host, ::conf.dns_forw_port, PROT_DNSv4);
		339
		340	dnsv4_fd = setup_socket (PROT_DNSv4, PF_INET, SOCK_DGRAM, IPPROTO_UDP);
		341
		342	if (dnsv4_fd < 0)
		343	return -1;
		344
		345	# if defined(SOL_IP) && defined(IP_MTU_DISCOVER)
		346	// this I really consider a linux bug. I am neither connected
		347	// nor do I fragment myself. Linux still sets DF and doesn't
		348	// fragment for me sometimes.
		349	{
		350	int oval = IP_PMTUDISC_DONT;
		351	setsockopt (dnsv4_fd, SOL_IP, IP_MTU_DISCOVER, &oval, sizeof oval);
240	}	352	}
241
242	tcpv4_ev_watcher.start (tcpv4_fd, POLLIN);
243	}
244	#endif	353	# endif
		354
		355	// standard daemon practise...
		356	{
		357	int oval = 1;
		358	setsockopt (dnsv4_fd, SOL_SOCKET, SO_REUSEADDR, &oval, sizeof oval);
		359	}
		360
		361	sockinfo si (THISNODE->dns_hostname,
		362	THISNODE->dns_hostname ? THISNODE->dns_port : 0,
		363	PROT_DNSv4);
		364
		365	if (bind (dnsv4_fd, si.sav4 (), si.salenv4 ()))
		366	{
		367	slog (L_ERR, _("can't bind dnsv4 on %s: %s, exiting."), (const char *)si, strerror (errno));
		368	return -1;
		369	}
		370
		371	dnsv4_ev_watcher.start (dnsv4_fd, EV_READ);
		372	++success;
		373	}
		374	#endif
		375
		376	/////////////////////////////////////////////////////////////////////////////
		377
		378	if (!success)
		379	{
		380	slog (L_ERR, _("no protocols enabled."));
		381	return -1;
		382	}
		383
		384	reconnect_all ();
		385
		386	/////////////////////////////////////////////////////////////////////////////
245		387
246	tap = new tap_device ();	388	tap = new tap_device ();
247	if (!tap) //D this, of course, never catches	389	if (!tap) //D this, of course, never catches
248	{	390	{
249	slog (L_ERR, _("cannot create network interface '%s'"), conf.ifname);	391	slog (L_ERR, _("cannot create network interface '%s'."), conf.ifname);
250	exit (1);	392	return -1;
251	}	393	}
252		394
253	run_script (run_script_cb (this, &vpn::script_if_up), true);	395	fcntl (tap->fd, F_SETFD, FD_CLOEXEC);
254		396
		397	run_script_cb cb;
		398	cb.set<vpn, &vpn::script_if_init> (this);
		399
		400	if (tap->if_up () &&
		401	!run_script (cb, true))
		402	{
		403	slog (L_ERR, _("interface initialization command '%s' failed."),
		404	tap->if_up ());
		405	return -1;
		406	}
		407
		408	cb.set<vpn, &vpn::script_if_up> (this);
		409	if (!run_script (cb, true))
		410	{
		411	slog (L_ERR, _("if-up command execution failed."));
		412	return -1;
		413	}
		414
255	tap_ev_watcher.start (tap->fd, POLLIN);	415	tap_ev_watcher.start (tap->fd, EV_READ);
256
257	reconnect_all ();
258		416
259	return 0;	417	return 0;
260	}	418	}
261		419
262	// send a vpn packet out to other hosts
263	bool	420	bool
264	vpn::send_vpn_packet (vpn_packet *pkt, const sockinfo &si, int tos)	421	vpn::drop_privileges ()
265	{	422	{
266	switch (si.prot)	423	if (::conf.change_root)
		424	{
		425	if (!strcmp (::conf.change_root, "/"))
		426	{
		427	char dir [L_tmpnam];
		428	if (!tmpnam (dir))
		429	{
		430	slog (L_CRIT, _("unable to create anonymous root path."));
		431	return false;
		432	}
		433
		434	if (mkdir (dir, 0700))
		435	{
		436	slog (L_CRIT, _("unable to create anonymous root directory."));
		437	return false;
		438	}
		439
		440	if (chdir (dir))
		441	{
		442	slog (L_CRIT, _("unable to change to anonymous root directory."));
		443	return false;
		444	}
		445
		446	if (rmdir (dir))
		447	slog (L_ERR, _("unable to remove anonymous root directory, continuing."));
		448	}
		449	else
		450	{
		451	if (chdir (::conf.change_root))
		452	{
		453	slog (L_CRIT, _("%s: unable to change to specified root directory."), ::conf.change_root);
		454	return false;
		455	}
		456	}
		457
		458	if (chroot ("."))
		459	{
		460	slog (L_CRIT, _("unable to set new root directory."));
		461	return false;
		462	}
		463
		464	if (chdir ("/"))
		465	{
		466	slog (L_CRIT, _("unable to set cwd to new root directory."));
		467	return false;
		468	}
		469	}
		470
		471	if (::conf.change_gid)
		472	if (setgid (::conf.change_gid))
267	{	473	{
268	case PROT_IPv4:	474	slog (L_CRIT, _("unable to change group id to %d."), ::conf.change_gid);
269	return send_ipv4_packet (pkt, si, tos);
270
271	case PROT_UDPv4:
272	return send_udpv4_packet (pkt, si, tos);
273
274	#if ENABLE_TCP
275	case PROT_TCPv4:
276	return send_tcpv4_packet (pkt, si, tos);
277	#endif
278
279	#if ENABLE_ICMP
280	case PROT_ICMPv4:
281	return send_icmpv4_packet (pkt, si, tos);
282	#endif
283
284	default:
285	slog (L_CRIT, _("%s: FATAL: trying to send packet with unsupported protocol"), (const char *)si);
286	return false;	475	return false;
287	}	476	}
		477
		478	if (::conf.change_uid)
		479	if (setuid (::conf.change_uid))
		480	{
		481	slog (L_CRIT, _("unable to change user id to %d."), ::conf.change_uid);
		482	return false;
		483	}
		484
		485	return true;
288	}	486	}
289		487
290	bool	488	bool
291	vpn::send_ipv4_packet (vpn_packet *pkt, const sockinfo &si, int tos)	489	vpn::send_ipv4_packet (vpn_packet *pkt, const sockinfo &si, int tos)
292	{	490	{
293	#if defined(SOL_IP) && defined(IP_TOS)	491	set_tos (ipv4_fd, ipv4_tos, tos);
294	setsockopt (ipv4_fd, SOL_IP, IP_TOS, &tos, sizeof tos);
295	#endif
296	sendto (ipv4_fd, &((*pkt)[0]), pkt->len, 0, si.sav4 (), si.salenv4 ());	492	xsendto (ipv4_fd, &((*pkt)[0]), pkt->len, 0, si.sav4 (), si.salenv4 ());
297		493
298	return true;	494	return true;
299	}	495	}
300		496
301	static u16	497	static u16
…		…
320		516
321	return ~sum;	517	return ~sum;
322	}	518	}
323		519
324	#if ENABLE_ICMP	520	#if ENABLE_ICMP
325	struct icmp_header {
326	u8 type;
327	u8 code;
328	u16 checksum;
329	union {
330	struct {
331	u16 id;
332	u16 sequence;
333	} echo;
334	u32 gateway;
335	struct {
336	u16 unused;
337	u16 mtu;
338	} frag;
339	} un;
340	};
341
342	bool	521	bool
343	vpn::send_icmpv4_packet (vpn_packet *pkt, const sockinfo &si, int tos)	522	vpn::send_icmpv4_packet (vpn_packet *pkt, const sockinfo &si, int tos)
344	{	523	{
345	#if defined(SOL_IP) && defined(IP_TOS)
346	setsockopt (icmpv4_fd, SOL_IP, IP_TOS, &tos, sizeof tos);
347	#endif
348
349	pkt->unshift_hdr (4);	524	pkt->unshift_hdr (4);
350		525
351	icmp_header hdr = (icmp_header )&((*pkt)[0]);	526	icmp_header hdr = (icmp_header )&((*pkt)[0]);
352	hdr->type = ::conf.icmp_type;	527	hdr->type = ::conf.icmp_type;
353	hdr->code = 255;	528	hdr->code = 255;
354	hdr->checksum = 0;	529	hdr->checksum = 0;
355	hdr->checksum = ipv4_checksum ((u16 *)hdr, pkt->len);	530	hdr->checksum = ipv4_checksum ((u16 *)hdr, pkt->len);
356		531
		532	set_tos (icmpv4_fd, icmpv4_tos, tos);
357	sendto (icmpv4_fd, &((*pkt)[0]), pkt->len, 0, si.sav4 (), si.salenv4 ());	533	xsendto (icmpv4_fd, &((*pkt)[0]), pkt->len, 0, si.sav4 (), si.salenv4 ());
358		534
359	return true;	535	return true;
360	}	536	}
361	#endif	537	#endif
362		538
363	bool	539	bool
364	vpn::send_udpv4_packet (vpn_packet *pkt, const sockinfo &si, int tos)	540	vpn::send_udpv4_packet (vpn_packet *pkt, const sockinfo &si, int tos)
365	{	541	{
366	#if defined(SOL_IP) && defined(IP_TOS)	542	set_tos (udpv4_fd, udpv4_tos, tos);
367	setsockopt (udpv4_fd, SOL_IP, IP_TOS, &tos, sizeof tos);
368	#endif
369	sendto (udpv4_fd, &((*pkt)[0]), pkt->len, 0, si.sav4 (), si.salenv4 ());	543	xsendto (udpv4_fd, &((*pkt)[0]), pkt->len, 0, si.sav4 (), si.salenv4 ());
370		544
371	return true;	545	return true;
		546	}
		547
		548	void
		549	vpn::inject_data_packet (tap_packet *pkt, int dst)
		550	{
		551	if (dst)
		552	{
		553	// unicast
		554	if (dst != THISNODE->id)
		555	conns[dst - 1]->inject_data_packet (pkt);
		556	}
		557	else
		558	{
		559	// broadcast, this is ugly, but due to the security policy
		560	// we have to connect to all hosts...
		561	for (conns_vector::iterator c = conns.begin (); c != conns.end (); ++c)
		562	if ((*c)->conf != THISNODE)
		563	(*c)->inject_data_packet (pkt);
		564	}
372	}	565	}
373		566
374	void	567	void
375	vpn::recv_vpn_packet (vpn_packet *pkt, const sockinfo &rsi)	568	vpn::recv_vpn_packet (vpn_packet *pkt, const sockinfo &rsi)
376	{	569	{
377	unsigned int src = pkt->src ();	570	unsigned int src = pkt->src ();
378	unsigned int dst = pkt->dst ();	571	unsigned int dst = pkt->dst ();
379		572
380	slog (L_NOISE, _("<<?/%s received possible vpn packet type %d from %d to %d, length %d"),	573	slog (L_NOISE, _("<<?/%s received possible vpn packet type %d from %d to %d, length %d."),
381	(const char *)rsi, pkt->typ (), pkt->src (), pkt->dst (), pkt->len);	574	(const char *)rsi, pkt->typ (), pkt->src (), pkt->dst (), pkt->len);
382		575
383	if (src == 0 \|\| src > conns.size ()	576	if (src == 0 \|\| src > conns.size ()
384	\|\| dst > conns.size ()	577	\|\| dst > conns.size ()
385	\|\| pkt->typ () >= vpn_packet::PT_MAX)	578	\|\| pkt->typ () >= vpn_packet::PT_MAX)
386	slog (L_WARN, _("(%s): received corrupted packet type %d (src %d, dst %d)"),	579	slog (L_WARN, _("(%s): received corrupted packet type %d (src %d, dst %d)."),
387	(const char *)rsi, pkt->typ (), pkt->src (), pkt->dst ());
388	else if (dst > conns.size ())
389	slog (L_WARN, _("(%s): received corrupted packet type %d (src %d, dst %d)"),
390	(const char *)rsi, pkt->typ (), pkt->src (), pkt->dst ());	580	(const char *)rsi, pkt->typ (), pkt->src (), pkt->dst ());
391	else	581	else
392	{	582	{
393	connection *c = conns[src - 1];	583	connection *c = conns[src - 1];
394		584
395	if (dst == 0)	585	if (dst == 0)
396	slog (L_WARN, _("%s(%s): received broadcast (protocol violation)"),	586	slog (L_WARN, _("%s(%s): received broadcast (protocol violation)."),
397	c->conf->nodename, (const char *)rsi);	587	c->conf->nodename, (const char *)rsi);
398	else if (dst != 0 && dst != THISNODE->id)	588	else if (dst != THISNODE->id)
399	{	589	{
400	if (THISNODE->routerprio)	590	if (THISNODE->routerprio)
401	// the tos setting gets lost here. who cares.	591	// the tos setting gets lost here. who cares.
402	conns[dst - 1]->inject_vpn_packet (pkt);	592	conns[dst - 1]->inject_vpn_packet (pkt);
403	else	593	else
404	slog (L_WARN,	594	slog (L_WARN,
405	_("%s(%s): forwarding request (=> %s), but we are no router"),	595	_("%s(%s): request to forward packet to %s, but we are no router (config mismatch?)."),
406	c->conf->nodename, (const char *)rsi,	596	c->conf->nodename, (const char *)rsi,
407	conns[dst - 1]->conf->nodename);	597	conns[dst - 1]->conf->nodename);
408	}	598	}
409	else	599	else
410	c->recv_vpn_packet (pkt, rsi);	600	c->recv_vpn_packet (pkt, rsi);
411	}	601	}
412	}	602	}
413		603
414	void	604	bool
		605	vpn::send_vpn_packet (vpn_packet *pkt, const sockinfo &si, int tos)
		606	{
		607	switch (si.prot)
		608	{
		609	case PROT_IPv4:
		610	return send_ipv4_packet (pkt, si, tos);
		611
		612	case PROT_UDPv4:
		613	return send_udpv4_packet (pkt, si, tos);
		614
		615	#if ENABLE_TCP
		616	case PROT_TCPv4:
		617	return send_tcpv4_packet (pkt, si, tos);
		618	#endif
		619	#if ENABLE_ICMP
		620	case PROT_ICMPv4:
		621	return send_icmpv4_packet (pkt, si, tos);
		622	#endif
		623	#if ENABLE_DNS
		624	case PROT_DNSv4:
		625	return send_dnsv4_packet (pkt, si, tos);
		626	#endif
		627	default:
		628	slog (L_CRIT, _("%s: FATAL: trying to send packet with unsupported protocol."), (const char *)si);
		629	}
		630
		631	return false;
		632	}
		633
		634	inline void
415	vpn::ipv4_ev (io_watcher &w, short revents)	635	vpn::ipv4_ev (ev::io &w, int revents)
416	{	636	{
417	if (revents & (POLLIN \| POLLERR))	637	if (revents & EV_READ)
418	{	638	{
419	vpn_packet *pkt = new vpn_packet;	639	vpn_packet *pkt = new vpn_packet;
420	struct sockaddr_in sa;	640	struct sockaddr_in sa;
421	socklen_t sa_len = sizeof (sa);	641	socklen_t sa_len = sizeof (sa);
422	int len;	642	int len;
…		…
427		647
428	if (len > 0)	648	if (len > 0)
429	{	649	{
430	pkt->len = len;	650	pkt->len = len;
431		651
432	// raw sockets deliver the ipv4, but don't expect it on sends	652	// raw sockets deliver the ipv4 header, but don't expect it on sends
433	// this is slow, but...	653	pkt->skip_hdr (pkt->ipv4_hdr_len ());
434	pkt->skip_hdr (IP_OVERHEAD);
435		654
436	recv_vpn_packet (pkt, si);	655	recv_vpn_packet (pkt, si);
437	}	656	}
438	else	657	else
439	{	658	{
440	// probably ECONNRESET or somesuch	659	// probably ECONNRESET or somesuch
441	slog (L_DEBUG, _("%s: %s"), (const char *)si, strerror (errno));	660	slog (L_DEBUG, _("%s: %s."), (const char *)si, strerror (errno));
442	}	661	}
443		662
444	delete pkt;	663	delete pkt;
445	}	664	}
446	else if (revents & POLLHUP)
447	{
448	// this cannot ;) happen on udp sockets
449	slog (L_ERR, _("FATAL: POLLHUP on ipv4 fd, terminating."));
450	exit (1);
451	}
452	else	665	else
453	{	666	{
454	slog (L_ERR,	667	slog (L_ERR,
455	_("FATAL: unknown revents %08x in socket, terminating\n"),	668	_("FATAL: unknown revents %08x in socket, exiting.\n"),
456	revents);	669	revents);
457	exit (1);	670	exit (EXIT_FAILURE);
458	}	671	}
459	}	672	}
460		673
461	#if ENABLE_ICMP	674	#if ENABLE_ICMP
462	void	675	inline void
463	vpn::icmpv4_ev (io_watcher &w, short revents)	676	vpn::icmpv4_ev (ev::io &w, int revents)
464	{	677	{
465	if (revents & (POLLIN \| POLLERR))	678	if (revents & EV_READ)
466	{	679	{
467	vpn_packet *pkt = new vpn_packet;	680	vpn_packet *pkt = new vpn_packet;
468	struct sockaddr_in sa;	681	struct sockaddr_in sa;
469	socklen_t sa_len = sizeof (sa);	682	socklen_t sa_len = sizeof (sa);
470	int len;	683	int len;
…		…
482	if (hdr->type == ::conf.icmp_type	695	if (hdr->type == ::conf.icmp_type
483	&& hdr->code == 255)	696	&& hdr->code == 255)
484	{	697	{
485	// raw sockets deliver the ipv4, but don't expect it on sends	698	// raw sockets deliver the ipv4, but don't expect it on sends
486	// this is slow, but...	699	// this is slow, but...
487	pkt->skip_hdr (ICMP_OVERHEAD);	700	pkt->skip_hdr (pkt->ipv4_hdr_len () + (ICMP_OVERHEAD - IP_OVERHEAD));
488		701
489	recv_vpn_packet (pkt, si);	702	recv_vpn_packet (pkt, si);
490	}	703	}
491	}	704	}
492	else	705	else
493	{	706	{
494	// probably ECONNRESET or somesuch	707	// probably ECONNRESET or somesuch
495	slog (L_DEBUG, _("%s: %s"), (const char *)si, strerror (errno));	708	slog (L_DEBUG, _("%s: %s."), (const char *)si, strerror (errno));
496	}	709	}
497		710
498	delete pkt;	711	delete pkt;
499	}	712	}
500	else if (revents & POLLHUP)
501	{
502	// this cannot ;) happen on udp sockets
503	slog (L_ERR, _("FATAL: POLLHUP on icmpv4 fd, terminating."));
504	exit (1);
505	}
506	else	713	else
507	{	714	{
508	slog (L_ERR,	715	slog (L_ERR,
509	_("FATAL: unknown revents %08x in socket, terminating\n"),	716	_("FATAL: unknown revents %08x in socket, exiting.\n"),
510	revents);	717	revents);
511	exit (1);	718	exit (EXIT_FAILURE);
512	}	719	}
513	}	720	}
514	#endif	721	#endif
515		722
516	void	723	inline void
517	vpn::udpv4_ev (io_watcher &w, short revents)	724	vpn::udpv4_ev (ev::io &w, int revents)
518	{	725	{
519	if (revents & (POLLIN \| POLLERR))	726	if (revents & EV_READ)
520	{	727	{
521	vpn_packet *pkt = new vpn_packet;	728	vpn_packet *pkt = new vpn_packet;
522	struct sockaddr_in sa;	729	struct sockaddr_in sa;
523	socklen_t sa_len = sizeof (sa);	730	socklen_t sa_len = sizeof (sa);
524	int len;	731	int len;
…		…
534	recv_vpn_packet (pkt, si);	741	recv_vpn_packet (pkt, si);
535	}	742	}
536	else	743	else
537	{	744	{
538	// probably ECONNRESET or somesuch	745	// probably ECONNRESET or somesuch
539	slog (L_DEBUG, _("%s: fd %d, %s"), (const char *)si, w.fd, strerror (errno));	746	slog (L_DEBUG, _("%s: fd %d, %s."), (const char *)si, w.fd, strerror (errno));
540	}	747	}
541		748
542	delete pkt;	749	delete pkt;
543	}	750	}
544	else if (revents & POLLHUP)
545	{
546	// this cannot ;) happen on udp sockets
547	slog (L_ERR, _("FATAL: POLLHUP on udp v4 fd, terminating."));
548	exit (1);
549	}
550	else	751	else
551	{	752	{
552	slog (L_ERR,	753	slog (L_ERR,
553	_("FATAL: unknown revents %08x in socket, terminating\n"),	754	_("FATAL: unknown revents %08x in socket, exiting.\n"),
554	revents);	755	revents);
555	exit (1);	756	exit (EXIT_FAILURE);
556	}	757	}
557	}	758	}
558		759
559	void	760	inline void
560	vpn::tap_ev (io_watcher &w, short revents)	761	vpn::tap_ev (ev::io &w, int revents)
561	{	762	{
562	if (revents & POLLIN)	763	if (revents & EV_READ)
563	{	764	{
564	/* process data */	765	/* process data */
565	tap_packet *pkt;	766	tap_packet *pkt;
566		767
567	pkt = tap->recv ();	768	pkt = tap->recv ();
568		769
		770	if (!pkt)
		771	return;
		772
		773	if (pkt->len > 14)
		774	{
569	int dst = mac2id (pkt->dst);	775	int dst = mac2id (pkt->dst);
570	int src = mac2id (pkt->src);	776	int src = mac2id (pkt->src);
571		777
572	if (src != THISNODE->id)	778	if (src != THISNODE->id)
573	{
574	slog (L_ERR, _("FATAL: tap packet not originating on current node received, exiting."));
575	exit (1);
576	}
577
578	if (dst == THISNODE->id)
579	{
580	slog (L_ERR, _("FATAL: tap packet destined for current node received, exiting."));
581	exit (1);
582	}
583
584	if (dst > conns.size ())
585	slog (L_ERR, _("tap packet for unknown node %d received, ignoring."), dst);
586	else
587	{
588	if (dst)
589	{	779	{
590	// unicast	780	slog (L_ERR, _("FATAL: tap packet not originating on current node received (if-up script not working properly?), exiting."));
591	if (dst != THISNODE->id)	781	exit (EXIT_FAILURE);
592	conns[dst - 1]->inject_data_packet (pkt);
593	}	782	}
		783
		784	if (dst == THISNODE->id)
		785	{
		786	slog (L_ERR, _("FATAL: tap packet destined for current node received, exiting."));
		787	exit (EXIT_FAILURE);
		788	}
		789
		790	if (dst > conns.size ())
		791	slog (L_ERR, _("tap packet for unknown node %d received, ignoring."), dst);
594	else	792	else
595	{
596	// broadcast, this is ugly, but due to the security policy
597	// we have to connect to all hosts...
598	for (conns_vector::iterator c = conns.begin (); c != conns.end (); ++c)
599	if ((*c)->conf != THISNODE)
600	(*c)->inject_data_packet (pkt);	793	inject_data_packet (pkt, dst);
601	}
602	}	794	}
603		795
604	delete pkt;	796	delete pkt;
605	}
606	else if (revents & (POLLHUP \| POLLERR))
607	{
608	slog (L_ERR, _("FATAL: POLLHUP or POLLERR on network device fd, terminating."));
609	exit (1);
610	}	797	}
611	else	798	else
612	abort ();	799	abort ();
613	}	800	}
614		801
615	void	802	inline void
616	vpn::event_cb (time_watcher &w)	803	vpn::event_cb (ev::timer &w, int)
617	{	804	{
618	if (events)	805	if (events)
619	{	806	{
620	if (events & EVENT_SHUTDOWN)	807	if (events & EVENT_SHUTDOWN)
621	{	808	{
622	slog (L_INFO, _("preparing shutdown..."));	809	slog (L_INFO, _("preparing shutdown..."));
623		810
624	shutdown_all ();	811	shutdown_all ();
625
626	remove_pid (pidfilename);	812	remove_pid (conf.pidfilename);
627
628	slog (L_INFO, _("terminating"));	813	slog (L_INFO, _("exiting."));
629		814	exit (EXIT_SUCCESS);
630	exit (0);
631	}	815	}
632		816
633	if (events & EVENT_RECONNECT)	817	if (events & EVENT_RECONNECT)
634	{	818	{
635	slog (L_INFO, _("forced reconnect"));	819	slog (L_INFO, _("forced reconnect."));
636		820
637	reconnect_all ();	821	reconnect_all ();
638	}	822	}
639		823
640	events = 0;	824	events = 0;
641	}	825	}
642
643	w.at = TSTAMP_CANCEL;
644	}	826	}
645		827
646	void	828	void
647	vpn::shutdown_all ()	829	vpn::shutdown_all ()
648	{	830	{
…		…
658		840
659	conns.clear ();	841	conns.clear ();
660		842
661	connection_init ();	843	connection_init ();
662		844
663	for (configuration::node_vector::iterator i = conf.nodes.begin ();	845	for (configuration::node_vector::iterator i = conf.nodes.begin (); i != conf.nodes.end (); ++i)
664	i != conf.nodes.end (); ++i)	846	conns.push_back (new connection (this, *i));
665	{
666	connection *conn = new connection (this);
667		847
668	conn->conf = *i;	848	for (conns_vector::iterator c = conns.begin (); c != conns.end (); ++c)
669	conns.push_back (conn);
670
671	conn->establish_connection ();	849	(*c)->establish_connection ();
672	}
673	}	850	}
674		851
675	connection *vpn::find_router ()	852	bool
		853	vpn::can_direct (conf_node src, conf_node dst) const
676	{	854	{
677	u32 prio = 1;	855	return src != dst
		856	&& src->may_direct (dst)
		857	&& dst->may_direct (src)
		858	&& (((src->protocols & dst->protocols) && src->connectmode == conf_node::C_ALWAYS)
		859	\|\| (src->protocols & dst->connectable_protocols ()));
		860	}
		861
		862	// only works for indirect and routed connections: find a router
		863	// from THISNODE to dst
		864	connection *
		865	vpn::find_router_for (const connection *dst)
		866	{
678	connection *router = 0;	867	connection *router = 0;
679		868
		869	// first try to find a router with a direct connection, route there
		870	// regardless of any other considerations.
		871	{
		872	u32 prio = 1;
		873
		874	for (conns_vector::iterator i = conns.begin (); i != conns.end (); ++i)
		875	{
		876	connection c = i;
		877
		878	if (c->conf->routerprio > prio
		879	&& c->conf != THISNODE
		880	&& can_direct (c->conf, dst->conf)
		881	&& c->ictx && c->octx)
		882	{
		883	prio = c->conf->routerprio;
		884	router = c;
		885	}
		886	}
		887	}
		888
		889	if (router)
		890	return router;
		891
		892	// second try find the router with the highest priority, higher than ours
		893	{
		894	u32 prio = THISNODE->routerprio ? THISNODE->routerprio : 1;
		895
		896	for (conns_vector::iterator i = conns.begin (); i != conns.end (); ++i)
		897	{
		898	connection c = i;
		899
		900	if (c->conf->routerprio > prio
		901	&& c != dst
		902	&& c->conf != THISNODE
		903	&& c->ictx && c->octx)
		904	{
		905	prio = c->conf->routerprio;
		906	router = c;
		907	}
		908	}
		909	}
		910
		911	return router;
		912	}
		913
		914	void
		915	vpn::connection_established (connection *c)
		916	{
680	for (conns_vector::iterator i = conns.begin (); i != conns.end (); ++i)	917	for (conns_vector::iterator i = conns.begin (); i != conns.end (); ++i)
681	{	918	{
682	connection c = i;	919	connection o = i;
683		920
684	if (c->conf->routerprio > prio	921	if (o->si.valid ()
685	&& c->connectmode == conf_node::C_ALWAYS // so we don't drop the connection if in use	922	&& c->si != o->si
686	&& c->ictx && c->octx	923	&& c == find_router_for (o)
687	&& c->conf != THISNODE) // redundant, since ictx==octx==0 always on thisnode	924	&& !can_direct (THISNODE, o->conf))
688	{
689	prio = c->conf->routerprio;
690	router = c;
691	}	925	{
		926	slog (L_DEBUG, _("%s: can now route packets via %s, re-keying connection."),
		927	o->conf->nodename, c->conf->nodename);
		928	o->rekey ();
		929	}
692	}	930	}
693
694	return router;
695	}	931	}
696		932
		933	void
697	void vpn::send_connect_request (int id)	934	vpn::send_connect_request (connection *c)
698	{	935	{
699	connection *c = find_router ();	936	connection *r = find_router_for (c);
700		937
701	if (c)	938	if (r)
		939	{
		940	slog (L_TRACE, _("%s: no address known, sending mediated connection request via %s."),
		941	c->conf->nodename, r->conf->nodename);
702	c->send_connect_request (id);	942	r->send_connect_request (c->conf->id);
		943	}
703	else	944	else
704	// no router found, aggressively connect to all routers	945	slog (L_DEBUG, _("%s: no way to connect and no router found: unable to connect at this time."),
705	for (conns_vector::iterator i = conns.begin (); i != conns.end (); ++i)	946	c->conf->nodename);
706	if ((i)->conf->routerprio && (i)->conf != THISNODE)
707	(*i)->establish_connection ();
708	}	947	}
709		948
710	void	949	void
711	connection::dump_status ()	950	connection::dump_status ()
712	{	951	{
713	slog (L_NOTICE, _("node %s (id %d)"), conf->nodename, conf->id);	952	slog (L_NOTICE, _("node %s (id %d)"), conf->nodename, conf->id);
714	slog (L_NOTICE, _(" connectmode %d (%d) / sockaddr %s / minor %d"),	953	slog (L_NOTICE, _(" connectmode %d (%d) / sockaddr %s / minor %d"),
715	connectmode, conf->connectmode, (const char *)si, (int)prot_minor);	954	connectmode, conf->connectmode, (const char *)si, (int)prot_minor);
716	slog (L_NOTICE, _(" ictx/octx %08lx/%08lx / oseqno %d / retry_cnt %d"),	955	slog (L_NOTICE, _(" ictx/octx %08lx/%08lx / oseqno %d / retry_cnt %d"),
717	(long)ictx, (long)octx, (int)oseqno, (int)retry_cnt);	956	(long)ictx, (long)octx, (int)oseqno, (int)retry_cnt);
718	slog (L_NOTICE, _(" establish_conn %ld / rekey %ld / keepalive %ld"),
719	(long)(establish_connection.at), (long)(rekey.at), (long)(keepalive.at));
720	}	957	}
721		958
722	void	959	void
723	vpn::dump_status ()	960	vpn::dump_status ()
724	{	961	{
725	slog (L_NOTICE, _("BEGIN status dump (%ld)"), (long)NOW);	962	slog (L_NOTICE, _("BEGIN status dump (%ld)"), (long)ev_now ());
726		963
727	for (conns_vector::iterator c = conns.begin (); c != conns.end (); ++c)	964	for (conns_vector::iterator c = conns.begin (); c != conns.end (); ++c)
728	(*c)->dump_status ();	965	(*c)->dump_status ();
729		966
730	slog (L_NOTICE, _("END status dump"));	967	slog (L_NOTICE, _("END status dump"));
731	}	968	}
732		969
733	vpn::vpn (void)	970	vpn::vpn (void)
		971	{
734	: event (this, &vpn::event_cb)	972	event .set<vpn, &vpn::event_cb > (this);
735	, udpv4_ev_watcher (this, &vpn::udpv4_ev)	973	udpv4_ev_watcher .set<vpn, &vpn::udpv4_ev > (this);
736	, ipv4_ev_watcher (this, &vpn::ipv4_ev)	974	ipv4_ev_watcher .set<vpn, &vpn::ipv4_ev > (this);
737	#if ENABLE_TCP	975	#if ENABLE_TCP
738	, tcpv4_ev_watcher (this, &vpn::tcpv4_ev)	976	tcpv4_ev_watcher .set<vpn, &vpn::tcpv4_ev > (this);
739	#endif	977	#endif
740	#if ENABLE_ICMP	978	#if ENABLE_ICMP
741	, icmpv4_ev_watcher(this, &vpn::icmpv4_ev)	979	icmpv4_ev_watcher.set<vpn, &vpn::icmpv4_ev> (this);
742	#endif	980	#endif
743	, tap_ev_watcher (this, &vpn::tap_ev)	981	#if ENABLE_DNS
744	{	982	dnsv4_ev_watcher .set<vpn, &vpn::dnsv4_ev > (this);
		983	#endif
		984	tap_ev_watcher .set<vpn, &vpn::tap_ev > (this);
745	}	985	}
746		986
747	vpn::~vpn ()	987	vpn::~vpn ()
748	{	988	{
749	}	989	}

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Comparing gvpe/src/vpn.C (file contents): Revision 1.14 by pcg, Tue Oct 14 03:22:09 2003 UTC vs. Revision 1.70 by root, Thu Oct 6 03:03:09 2022 UTC

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Comparing gvpe/src/vpn.C (file contents):
Revision 1.14 by pcg, Tue Oct 14 03:22:09 2003 UTC vs.
Revision 1.70 by root, Thu Oct 6 03:03:09 2022 UTC