[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 1.71 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 <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);	260	// no clue where trhis is actually defined
		261	#if !defined(ICMP_FILTER) && defined(__linux)
		262	#define ICMP_FILTER 1
		263	#endif
176		264
177	#ifdef ICMP_FILTER	265	#ifdef ICMP_FILTER
178	{	266	{
179	icmp_filter oval;	267	uint32_t oval;
180	oval.data = 0xffffffff;	268	oval = 0;
181	if (::conf.icmp_type < 32)	269	if (::conf.icmp_type < 32)
182	oval.data &= ~(1 << ::conf.icmp_type);	270	oval \|= 1 << ::conf.icmp_type;
		271	oval = ~oval;
183		272
184	setsockopt (icmpv4_fd, SOL_RAW, ICMP_FILTER, &oval, sizeof oval);	273	setsockopt (icmpv4_fd, SOL_RAW, ICMP_FILTER, &oval, sizeof oval);
185	}	274	}
186	#endif	275	#endif
187		276
…		…
189	// this I really consider a linux bug. I am neither connected	278	// this I really consider a linux bug. I am neither connected
190	// 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
191	// fragment for me sometimes.	280	// fragment for me sometimes.
192	{	281	{
193	int oval = IP_PMTUDISC_DONT;	282	int oval = IP_PMTUDISC_DONT;
194	setsockopt (udpv4_fd, SOL_IP, IP_MTU_DISCOVER, &oval, sizeof oval);	283	setsockopt (icmpv4_fd, SOL_IP, IP_MTU_DISCOVER, &oval, sizeof oval);
195	}	284	}
196	#endif	285	#endif
197		286
198	sockinfo si (THISNODE, PROT_ICMPv4);	287	sockinfo si (THISNODE, PROT_ICMPv4);
199		288
200	if (bind (icmpv4_fd, si.sav4 (), si.salenv4 ()))	289	if (bind (icmpv4_fd, si.sav4 (), si.salenv4 ()))
201	{	290	{
202	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));
203	exit (1);	292	return -1;
204	}	293	}
205		294
206	icmpv4_ev_watcher.start (icmpv4_fd, POLLIN);	295	icmpv4_ev_watcher.start (icmpv4_fd, EV_READ);
		296	++success;
207	}	297	}
208	#endif	298	#endif
209		299
210	tcpv4_fd = -1;	300	tcpv4_fd = -1;
211		301
212	#if ENABLE_TCP	302	#if ENABLE_TCP
213	if (THISNODE->protocols & PROT_TCPv4 && THISNODE->tcp_port)	303	if (THISNODE->protocols & PROT_TCPv4 && THISNODE->tcp_port)
214	{	304	{
215	tcpv4_fd = socket (PF_INET, SOCK_STREAM, IPPROTO_TCP);	305	tcpv4_fd = setup_socket (PROT_TCPv4, PF_INET, SOCK_STREAM, IPPROTO_TCP);
216		306
217	if (tcpv4_fd < 0)	307	if (tcpv4_fd < 0)
218	return -1;	308	return -1;
219		309
220	fcntl (tcpv4_fd, F_SETFL, O_NONBLOCK);
221
222	// standard daemon practise...	310	// standard daemon practise...
223	{	311	{
224	int oval = 1;	312	int oval = 1;
225	setsockopt (tcpv4_fd, SOL_SOCKET, SO_REUSEADDR, &oval, sizeof oval);	313	setsockopt (tcpv4_fd, SOL_SOCKET, SO_REUSEADDR, &oval, sizeof oval);
226	}	314	}
227		315
228	sockinfo si (THISNODE, PROT_TCPv4);	316	sockinfo si (THISNODE, PROT_TCPv4);
229		317
230	if (bind (tcpv4_fd, si.sav4 (), si.salenv4 ()))	318	if (bind (tcpv4_fd, si.sav4 (), si.salenv4 ()))
231	{	319	{
232	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));
233	exit (1);	321	return -1;
234	}	322	}
235		323
236	if (listen (tcpv4_fd, 5))	324	if (listen (tcpv4_fd, 5))
237	{	325	{
238	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));
239	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);
240	}	357	}
241
242	tcpv4_ev_watcher.start (tcpv4_fd, POLLIN);
243	}
244	#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	/////////////////////////////////////////////////////////////////////////////
245		392
246	tap = new tap_device ();	393	tap = new tap_device ();
247	if (!tap) //D this, of course, never catches	394	if (!tap) //D this, of course, never catches
248	{	395	{
249	slog (L_ERR, _("cannot create network interface '%s'"), conf.ifname);	396	slog (L_ERR, _("cannot create network interface '%s'."), conf.ifname);
250	exit (1);	397	return -1;
251	}	398	}
252		399
253	run_script (run_script_cb (this, &vpn::script_if_up), true);	400	fcntl (tap->fd, F_SETFD, FD_CLOEXEC);
254		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
255	tap_ev_watcher.start (tap->fd, POLLIN);	420	tap_ev_watcher.start (tap->fd, EV_READ);
256
257	reconnect_all ();
258		421
259	return 0;	422	return 0;
260	}	423	}
261		424
262	// send a vpn packet out to other hosts
263	bool	425	bool
264	vpn::send_vpn_packet (vpn_packet *pkt, const sockinfo &si, int tos)	426	vpn::drop_privileges ()
265	{	427	{
266	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))
267	{	478	{
268	case PROT_IPv4:	479	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;	480	return false;
287	}	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;
288	}	491	}
289		492
290	bool	493	bool
291	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)
292	{	495	{
293	#if defined(SOL_IP) && defined(IP_TOS)	496	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 ());	497	xsendto (ipv4_fd, &((*pkt)[0]), pkt->len, 0, si.sav4 (), si.salenv4 ());
297		498
298	return true;	499	return true;
299	}	500	}
300		501
301	static u16	502	static u16
…		…
320		521
321	return ~sum;	522	return ~sum;
322	}	523	}
323		524
324	#if ENABLE_ICMP	525	#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	526	bool
343	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)
344	{	528	{
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);	529	pkt->unshift_hdr (4);
350		530
351	icmp_header hdr = (icmp_header )&((*pkt)[0]);	531	icmp_header hdr = (icmp_header )&((*pkt)[0]);
352	hdr->type = ::conf.icmp_type;	532	hdr->type = ::conf.icmp_type;
353	hdr->code = 255;	533	hdr->code = 255;
354	hdr->checksum = 0;	534	hdr->checksum = 0;
355	hdr->checksum = ipv4_checksum ((u16 *)hdr, pkt->len);	535	hdr->checksum = ipv4_checksum ((u16 *)hdr, pkt->len);
356		536
		537	set_tos (icmpv4_fd, icmpv4_tos, tos);
357	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 ());
358		539
359	return true;	540	return true;
360	}	541	}
361	#endif	542	#endif
362		543
363	bool	544	bool
364	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)
365	{	546	{
366	#if defined(SOL_IP) && defined(IP_TOS)	547	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 ());	548	xsendto (udpv4_fd, &((*pkt)[0]), pkt->len, 0, si.sav4 (), si.salenv4 ());
370		549
371	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	}
372	}	570	}
373		571
374	void	572	void
375	vpn::recv_vpn_packet (vpn_packet *pkt, const sockinfo &rsi)	573	vpn::recv_vpn_packet (vpn_packet *pkt, const sockinfo &rsi)
376	{	574	{
377	unsigned int src = pkt->src ();	575	unsigned int src = pkt->src ();
378	unsigned int dst = pkt->dst ();	576	unsigned int dst = pkt->dst ();
379		577
380	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."),
381	(const char *)rsi, pkt->typ (), pkt->src (), pkt->dst (), pkt->len);	579	(const char *)rsi, pkt->typ (), pkt->src (), pkt->dst (), pkt->len);
382		580
383	if (src == 0 \|\| src > conns.size ()	581	if (src == 0 \|\| src > conns.size ()
384	\|\| dst > conns.size ()	582	\|\| dst > conns.size ()
385	\|\| pkt->typ () >= vpn_packet::PT_MAX)	583	\|\| pkt->typ () >= vpn_packet::PT_MAX)
386	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)."),
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 ());	585	(const char *)rsi, pkt->typ (), pkt->src (), pkt->dst ());
391	else	586	else
392	{	587	{
393	connection *c = conns[src - 1];	588	connection *c = conns[src - 1];
394		589
395	if (dst == 0)	590	if (dst == 0)
396	slog (L_WARN, _("%s(%s): received broadcast (protocol violation)"),	591	slog (L_WARN, _("%s(%s): received broadcast (protocol violation)."),
397	c->conf->nodename, (const char *)rsi);	592	c->conf->nodename, (const char *)rsi);
398	else if (dst != 0 && dst != THISNODE->id)	593	else if (dst != THISNODE->id)
399	{	594	{
400	if (THISNODE->routerprio)	595	if (THISNODE->routerprio)
401	// the tos setting gets lost here. who cares.	596	// the tos setting gets lost here. who cares.
402	conns[dst - 1]->inject_vpn_packet (pkt);	597	conns[dst - 1]->inject_vpn_packet (pkt);
403	else	598	else
404	slog (L_WARN,	599	slog (L_WARN,
405	_("%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?)."),
406	c->conf->nodename, (const char *)rsi,	601	c->conf->nodename, (const char *)rsi,
407	conns[dst - 1]->conf->nodename);	602	conns[dst - 1]->conf->nodename);
408	}	603	}
409	else	604	else
410	c->recv_vpn_packet (pkt, rsi);	605	c->recv_vpn_packet (pkt, rsi);
411	}	606	}
412	}	607	}
413		608
414	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
415	vpn::ipv4_ev (io_watcher &w, short revents)	640	vpn::ipv4_ev (ev::io &w, int revents)
416	{	641	{
417	if (revents & (POLLIN \| POLLERR))	642	if (revents & EV_READ)
418	{	643	{
419	vpn_packet *pkt = new vpn_packet;	644	vpn_packet *pkt = new vpn_packet;
420	struct sockaddr_in sa;	645	struct sockaddr_in sa;
421	socklen_t sa_len = sizeof (sa);	646	socklen_t sa_len = sizeof (sa);
422	int len;	647	int len;
…		…
427		652
428	if (len > 0)	653	if (len > 0)
429	{	654	{
430	pkt->len = len;	655	pkt->len = len;
431		656
432	// 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
433	// this is slow, but...	658	pkt->skip_hdr (pkt->ipv4_hdr_len ());
434	pkt->skip_hdr (IP_OVERHEAD);
435		659
436	recv_vpn_packet (pkt, si);	660	recv_vpn_packet (pkt, si);
437	}	661	}
438	else	662	else
439	{	663	{
440	// probably ECONNRESET or somesuch	664	// probably ECONNRESET or somesuch
441	slog (L_DEBUG, _("%s: %s"), (const char *)si, strerror (errno));	665	slog (L_DEBUG, _("%s: %s."), (const char *)si, strerror (errno));
442	}	666	}
443		667
444	delete pkt;	668	delete pkt;
445	}	669	}
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	670	else
453	{	671	{
454	slog (L_ERR,	672	slog (L_ERR,
455	_("FATAL: unknown revents %08x in socket, terminating\n"),	673	_("FATAL: unknown revents %08x in socket, exiting.\n"),
456	revents);	674	revents);
457	exit (1);	675	exit (EXIT_FAILURE);
458	}	676	}
459	}	677	}
460		678
461	#if ENABLE_ICMP	679	#if ENABLE_ICMP
462	void	680	inline void
463	vpn::icmpv4_ev (io_watcher &w, short revents)	681	vpn::icmpv4_ev (ev::io &w, int revents)
464	{	682	{
465	if (revents & (POLLIN \| POLLERR))	683	if (revents & EV_READ)
466	{	684	{
467	vpn_packet *pkt = new vpn_packet;	685	vpn_packet *pkt = new vpn_packet;
468	struct sockaddr_in sa;	686	struct sockaddr_in sa;
469	socklen_t sa_len = sizeof (sa);	687	socklen_t sa_len = sizeof (sa);
470	int len;	688	int len;
…		…
482	if (hdr->type == ::conf.icmp_type	700	if (hdr->type == ::conf.icmp_type
483	&& hdr->code == 255)	701	&& hdr->code == 255)
484	{	702	{
485	// 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
486	// this is slow, but...	704	// this is slow, but...
487	pkt->skip_hdr (ICMP_OVERHEAD);	705	pkt->skip_hdr (pkt->ipv4_hdr_len () + (ICMP_OVERHEAD - IP_OVERHEAD));
488		706
489	recv_vpn_packet (pkt, si);	707	recv_vpn_packet (pkt, si);
490	}	708	}
491	}	709	}
492	else	710	else
493	{	711	{
494	// probably ECONNRESET or somesuch	712	// probably ECONNRESET or somesuch
495	slog (L_DEBUG, _("%s: %s"), (const char *)si, strerror (errno));	713	slog (L_DEBUG, _("%s: %s."), (const char *)si, strerror (errno));
496	}	714	}
497		715
498	delete pkt;	716	delete pkt;
499	}	717	}
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	718	else
507	{	719	{
508	slog (L_ERR,	720	slog (L_ERR,
509	_("FATAL: unknown revents %08x in socket, terminating\n"),	721	_("FATAL: unknown revents %08x in socket, exiting.\n"),
510	revents);	722	revents);
511	exit (1);	723	exit (EXIT_FAILURE);
512	}	724	}
513	}	725	}
514	#endif	726	#endif
515		727
516	void	728	inline void
517	vpn::udpv4_ev (io_watcher &w, short revents)	729	vpn::udpv4_ev (ev::io &w, int revents)
518	{	730	{
519	if (revents & (POLLIN \| POLLERR))	731	if (revents & EV_READ)
520	{	732	{
521	vpn_packet *pkt = new vpn_packet;	733	vpn_packet *pkt = new vpn_packet;
522	struct sockaddr_in sa;	734	struct sockaddr_in sa;
523	socklen_t sa_len = sizeof (sa);	735	socklen_t sa_len = sizeof (sa);
524	int len;	736	int len;
…		…
534	recv_vpn_packet (pkt, si);	746	recv_vpn_packet (pkt, si);
535	}	747	}
536	else	748	else
537	{	749	{
538	// probably ECONNRESET or somesuch	750	// probably ECONNRESET or somesuch
539	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));
540	}	752	}
541		753
542	delete pkt;	754	delete pkt;
543	}	755	}
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	756	else
551	{	757	{
552	slog (L_ERR,	758	slog (L_ERR,
553	_("FATAL: unknown revents %08x in socket, terminating\n"),	759	_("FATAL: unknown revents %08x in socket, exiting.\n"),
554	revents);	760	revents);
555	exit (1);	761	exit (EXIT_FAILURE);
556	}	762	}
557	}	763	}
558		764
559	void	765	inline void
560	vpn::tap_ev (io_watcher &w, short revents)	766	vpn::tap_ev (ev::io &w, int revents)
561	{	767	{
562	if (revents & POLLIN)	768	if (revents & EV_READ)
563	{	769	{
564	/* process data */	770	/* process data */
565	tap_packet *pkt;	771	tap_packet *pkt;
566		772
567	pkt = tap->recv ();	773	pkt = tap->recv ();
568		774
		775	if (!pkt)
		776	return;
		777
		778	if (pkt->len > 14)
		779	{
569	int dst = mac2id (pkt->dst);	780	int dst = mac2id (pkt->dst);
570	int src = mac2id (pkt->src);	781	int src = mac2id (pkt->src);
571		782
572	if (src != THISNODE->id)	783	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	{	784	{
590	// unicast	785	slog (L_ERR, _("FATAL: tap packet not originating on current node received (if-up script not working properly?), exiting."));
591	if (dst != THISNODE->id)	786	exit (EXIT_FAILURE);
592	conns[dst - 1]->inject_data_packet (pkt);
593	}	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);
594	else	797	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);	798	inject_data_packet (pkt, dst);
601	}
602	}	799	}
603		800
604	delete pkt;	801	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	}	802	}
611	else	803	else
612	abort ();	804	abort ();
613	}	805	}
614		806
615	void	807	inline void
616	vpn::event_cb (time_watcher &w)	808	vpn::event_cb (ev::timer &w, int)
617	{	809	{
618	if (events)	810	if (events)
619	{	811	{
620	if (events & EVENT_SHUTDOWN)	812	if (events & EVENT_SHUTDOWN)
621	{	813	{
622	slog (L_INFO, _("preparing shutdown..."));	814	slog (L_INFO, _("preparing shutdown..."));
623		815
624	shutdown_all ();	816	shutdown_all ();
625
626	remove_pid (pidfilename);	817	remove_pid (conf.pidfilename);
627
628	slog (L_INFO, _("terminating"));	818	slog (L_INFO, _("exiting."));
629		819	exit (EXIT_SUCCESS);
630	exit (0);
631	}	820	}
632		821
633	if (events & EVENT_RECONNECT)	822	if (events & EVENT_RECONNECT)
634	{	823	{
635	slog (L_INFO, _("forced reconnect"));	824	slog (L_INFO, _("forced reconnect."));
636		825
637	reconnect_all ();	826	reconnect_all ();
638	}	827	}
639		828
640	events = 0;	829	events = 0;
641	}	830	}
642
643	w.at = TSTAMP_CANCEL;
644	}	831	}
645		832
646	void	833	void
647	vpn::shutdown_all ()	834	vpn::shutdown_all ()
648	{	835	{
…		…
658		845
659	conns.clear ();	846	conns.clear ();
660		847
661	connection_init ();	848	connection_init ();
662		849
663	for (configuration::node_vector::iterator i = conf.nodes.begin ();	850	for (configuration::node_vector::iterator i = conf.nodes.begin (); i != conf.nodes.end (); ++i)
664	i != conf.nodes.end (); ++i)	851	conns.push_back (new connection (this, *i));
665	{
666	connection *conn = new connection (this);
667		852
668	conn->conf = *i;	853	for (conns_vector::iterator c = conns.begin (); c != conns.end (); ++c)
669	conns.push_back (conn);
670
671	conn->establish_connection ();	854	(*c)->establish_connection ();
672	}
673	}	855	}
674		856
675	connection *vpn::find_router ()	857	bool
		858	vpn::can_direct (conf_node src, conf_node dst) const
676	{	859	{
677	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	{
678	connection *router = 0;	872	connection *router = 0;
679		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	{
680	for (conns_vector::iterator i = conns.begin (); i != conns.end (); ++i)	922	for (conns_vector::iterator i = conns.begin (); i != conns.end (); ++i)
681	{	923	{
682	connection c = i;	924	connection o = i;
683		925
684	if (c->conf->routerprio > prio	926	if (o->si.valid ()
685	&& c->connectmode == conf_node::C_ALWAYS // so we don't drop the connection if in use	927	&& c->si != o->si
686	&& c->ictx && c->octx	928	&& c == find_router_for (o)
687	&& c->conf != THISNODE) // redundant, since ictx==octx==0 always on thisnode	929	&& !can_direct (THISNODE, o->conf))
688	{
689	prio = c->conf->routerprio;
690	router = c;
691	}	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	}
692	}	935	}
693
694	return router;
695	}	936	}
696		937
		938	void
697	void vpn::send_connect_request (int id)	939	vpn::send_connect_request (connection *c)
698	{	940	{
699	connection *c = find_router ();	941	connection *r = find_router_for (c);
700		942
701	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);
702	c->send_connect_request (id);	947	r->send_connect_request (c->conf->id);
		948	}
703	else	949	else
704	// 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."),
705	for (conns_vector::iterator i = conns.begin (); i != conns.end (); ++i)	951	c->conf->nodename);
706	if ((i)->conf->routerprio && (i)->conf != THISNODE)
707	(*i)->establish_connection ();
708	}	952	}
709		953
710	void	954	void
711	connection::dump_status ()	955	connection::dump_status ()
712	{	956	{
713	slog (L_NOTICE, _("node %s (id %d)"), conf->nodename, conf->id);	957	slog (L_NOTICE, _("node %s (id %d)"), conf->nodename, conf->id);
714	slog (L_NOTICE, _(" connectmode %d (%d) / sockaddr %s / minor %d"),	958	slog (L_NOTICE, _(" connectmode %d (%d) / sockaddr %s / minor %d"),
715	connectmode, conf->connectmode, (const char *)si, (int)prot_minor);	959	connectmode, conf->connectmode, (const char *)si, (int)prot_minor);
716	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"),
717	(long)ictx, (long)octx, (int)oseqno, (int)retry_cnt);	961	(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	}	962	}
721		963
722	void	964	void
723	vpn::dump_status ()	965	vpn::dump_status ()
724	{	966	{
725	slog (L_NOTICE, _("BEGIN status dump (%ld)"), (long)NOW);	967	slog (L_NOTICE, _("BEGIN status dump (%ld)"), (long)ev_now ());
726		968
727	for (conns_vector::iterator c = conns.begin (); c != conns.end (); ++c)	969	for (conns_vector::iterator c = conns.begin (); c != conns.end (); ++c)
728	(*c)->dump_status ();	970	(*c)->dump_status ();
729		971
730	slog (L_NOTICE, _("END status dump"));	972	slog (L_NOTICE, _("END status dump"));
731	}	973	}
732		974
733	vpn::vpn (void)	975	vpn::vpn (void)
		976	{
734	: event (this, &vpn::event_cb)	977	event .set<vpn, &vpn::event_cb > (this);
735	, udpv4_ev_watcher (this, &vpn::udpv4_ev)	978	udpv4_ev_watcher .set<vpn, &vpn::udpv4_ev > (this);
736	, ipv4_ev_watcher (this, &vpn::ipv4_ev)	979	ipv4_ev_watcher .set<vpn, &vpn::ipv4_ev > (this);
737	#if ENABLE_TCP	980	#if ENABLE_TCP
738	, tcpv4_ev_watcher (this, &vpn::tcpv4_ev)	981	tcpv4_ev_watcher .set<vpn, &vpn::tcpv4_ev > (this);
739	#endif	982	#endif
740	#if ENABLE_ICMP	983	#if ENABLE_ICMP
741	, icmpv4_ev_watcher(this, &vpn::icmpv4_ev)	984	icmpv4_ev_watcher.set<vpn, &vpn::icmpv4_ev> (this);
742	#endif	985	#endif
743	, tap_ev_watcher (this, &vpn::tap_ev)	986	#if ENABLE_DNS
744	{	987	dnsv4_ev_watcher .set<vpn, &vpn::dnsv4_ev > (this);
		988	#endif
		989	tap_ev_watcher .set<vpn, &vpn::tap_ev > (this);
745	}	990	}
746		991
747	vpn::~vpn ()	992	vpn::~vpn ()
748	{	993	{
749	}	994	}

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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 1.71 by root, Thu Oct 6 03:25:54 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 1.71 by root, Thu Oct 6 03:25:54 2022 UTC