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

Comparing gvpe/src/vpn.C (file contents):
Revision 1.10 by pcg, Tue Apr 8 03:25:35 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 <arpa/inet.h>	47	#include <fcntl.h>
35	#include <netinet/in.h>	48	#include <sys/socket.h>
36	#include <netinet/ip_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
153	#ifdef ICMP_FILTER	260	#ifdef ICMP_FILTER
154	{	261	{
155	icmp_filter oval;	262	icmp_filter oval;
156	oval.data = 0xffffffff;	263	oval.data = 0;
157	if (::conf.icmp_type < 32)	264	if (::conf.icmp_type < 32)
158	oval.data &= ~(1 << ::conf.icmp_type);	265	oval.data \|= 1 << ::conf.icmp_type;
		266	oval.data = ~oval.data;
159		267
160	setsockopt (icmpv4_fd, SOL_RAW, ICMP_FILTER, &oval, sizeof oval);	268	setsockopt (icmpv4_fd, SOL_RAW, ICMP_FILTER, &oval, sizeof oval);
161	}	269	}
162	#endif	270	#endif
163		271
164	#ifdef IP_MTU_DISCOVER	272	#if defined(SOL_IP) && defined(IP_MTU_DISCOVER)
165	// this I really consider a linux bug. I am neither connected	273	// this I really consider a linux bug. I am neither connected
166	// 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
167	// fragment for me sometimes.	275	// fragment for me sometimes.
168	{	276	{
169	int oval = IP_PMTUDISC_DONT;	277	int oval = IP_PMTUDISC_DONT;
170	setsockopt (udpv4_fd, SOL_IP, IP_MTU_DISCOVER, &oval, sizeof oval);	278	setsockopt (icmpv4_fd, SOL_IP, IP_MTU_DISCOVER, &oval, sizeof oval);
171	}	279	}
172	#endif	280	#endif
173		281
174	sockinfo si (THISNODE, PROT_ICMPv4);	282	sockinfo si (THISNODE, PROT_ICMPv4);
175		283
176	if (bind (icmpv4_fd, si.sav4 (), si.salenv4 ()))	284	if (bind (icmpv4_fd, si.sav4 (), si.salenv4 ()))
177	{	285	{
178	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));
179	exit (1);	287	return -1;
180	}	288	}
181		289
182	icmpv4_ev_watcher.start (icmpv4_fd, POLLIN);	290	icmpv4_ev_watcher.start (icmpv4_fd, EV_READ);
		291	++success;
183	}	292	}
184	#endif	293	#endif
185		294
186	tcpv4_fd = -1;	295	tcpv4_fd = -1;
187		296
188	#if ENABLE_TCP	297	#if ENABLE_TCP
189	if (THISNODE->protocols & PROT_TCPv4 && THISNODE->tcp_port)	298	if (THISNODE->protocols & PROT_TCPv4 && THISNODE->tcp_port)
190	{	299	{
191	tcpv4_fd = socket (PF_INET, SOCK_STREAM, IPPROTO_TCP);	300	tcpv4_fd = setup_socket (PROT_TCPv4, PF_INET, SOCK_STREAM, IPPROTO_TCP);
192		301
193	if (tcpv4_fd < 0)	302	if (tcpv4_fd < 0)
194	return -1;	303	return -1;
195		304
196	// standard daemon practise...	305	// standard daemon practise...
…		…
201		310
202	sockinfo si (THISNODE, PROT_TCPv4);	311	sockinfo si (THISNODE, PROT_TCPv4);
203		312
204	if (bind (tcpv4_fd, si.sav4 (), si.salenv4 ()))	313	if (bind (tcpv4_fd, si.sav4 (), si.salenv4 ()))
205	{	314	{
206	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));
207	exit (1);	316	return -1;
208	}	317	}
209		318
210	if (listen (tcpv4_fd, 5))	319	if (listen (tcpv4_fd, 5))
211	{	320	{
212	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));
213	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);
214	}	352	}
215
216	tcpv4_ev_watcher.start (tcpv4_fd, POLLIN);
217	}
218	#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	/////////////////////////////////////////////////////////////////////////////
219		387
220	tap = new tap_device ();	388	tap = new tap_device ();
221	if (!tap) //D this, of course, never catches	389	if (!tap) //D this, of course, never catches
222	{	390	{
223	slog (L_ERR, _("cannot create network interface '%s'"), conf.ifname);	391	slog (L_ERR, _("cannot create network interface '%s'."), conf.ifname);
224	exit (1);	392	return -1;
225	}	393	}
226		394
227	run_script (run_script_cb (this, &vpn::script_if_up), true);	395	fcntl (tap->fd, F_SETFD, FD_CLOEXEC);
228		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
229	tap_ev_watcher.start (tap->fd, POLLIN);	415	tap_ev_watcher.start (tap->fd, EV_READ);
230
231	reconnect_all ();
232		416
233	return 0;	417	return 0;
234	}	418	}
235		419
236	// send a vpn packet out to other hosts
237	bool	420	bool
238	vpn::send_vpn_packet (vpn_packet *pkt, const sockinfo &si, int tos)	421	vpn::drop_privileges ()
239	{	422	{
240	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))
241	{	473	{
242	case PROT_IPv4:	474	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;	475	return false;
261	}	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;
262	}	486	}
263		487
264	bool	488	bool
265	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)
266	{	490	{
267	setsockopt (ipv4_fd, SOL_IP, IP_TOS, &tos, sizeof tos);	491	set_tos (ipv4_fd, ipv4_tos, tos);
268	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 ());
269		493
270	return true;	494	return true;
271	}	495	}
272		496
273	static u16	497	static u16
…		…
291	sum += (sum >> 16); // carry	515	sum += (sum >> 16); // carry
292		516
293	return ~sum;	517	return ~sum;
294	}	518	}
295		519
		520	#if ENABLE_ICMP
296	bool	521	bool
297	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)
298	{	523	{
299	setsockopt (icmpv4_fd, SOL_IP, IP_TOS, &tos, sizeof tos);
300
301	pkt->unshift_hdr (4);	524	pkt->unshift_hdr (4);
302		525
303	icmphdr hdr = (icmphdr )&((*pkt)[0]);	526	icmp_header hdr = (icmp_header )&((*pkt)[0]);
304	hdr->type = ::conf.icmp_type;	527	hdr->type = ::conf.icmp_type;
305	hdr->code = 255;	528	hdr->code = 255;
306	hdr->checksum = 0;	529	hdr->checksum = 0;
307	hdr->checksum = ipv4_checksum ((u16 *)hdr, pkt->len);	530	hdr->checksum = ipv4_checksum ((u16 *)hdr, pkt->len);
308		531
		532	set_tos (icmpv4_fd, icmpv4_tos, tos);
309	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 ());
310		534
311	return true;	535	return true;
312	}	536	}
		537	#endif
313		538
314	bool	539	bool
315	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)
316	{	541	{
317	setsockopt (udpv4_fd, SOL_IP, IP_TOS, &tos, sizeof tos);	542	set_tos (udpv4_fd, udpv4_tos, tos);
318	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 ());
319		544
320	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	}
321	}	565	}
322		566
323	void	567	void
324	vpn::recv_vpn_packet (vpn_packet *pkt, const sockinfo &rsi)	568	vpn::recv_vpn_packet (vpn_packet *pkt, const sockinfo &rsi)
325	{	569	{
326	unsigned int src = pkt->src ();	570	unsigned int src = pkt->src ();
327	unsigned int dst = pkt->dst ();	571	unsigned int dst = pkt->dst ();
328		572
329	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."),
330	(const char *)rsi, pkt->typ (), pkt->src (), pkt->dst (), pkt->len);	574	(const char *)rsi, pkt->typ (), pkt->src (), pkt->dst (), pkt->len);
331		575
332	if (src == 0 \|\| src > conns.size ()	576	if (src == 0 \|\| src > conns.size ()
333	\|\| dst > conns.size ()	577	\|\| dst > conns.size ()
334	\|\| pkt->typ () >= vpn_packet::PT_MAX)	578	\|\| pkt->typ () >= vpn_packet::PT_MAX)
335	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)."),
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 ());	580	(const char *)rsi, pkt->typ (), pkt->src (), pkt->dst ());
340	else	581	else
341	{	582	{
342	connection *c = conns[src - 1];	583	connection *c = conns[src - 1];
343		584
344	if (dst == 0 && !THISNODE->routerprio)	585	if (dst == 0)
345	slog (L_WARN, _("%s(%s): received broadcast, but we are no router"),	586	slog (L_WARN, _("%s(%s): received broadcast (protocol violation)."),
346	c->conf->nodename, (const char *)rsi);	587	c->conf->nodename, (const char *)rsi);
347	else if (dst != 0 && dst != THISNODE->id)	588	else if (dst != THISNODE->id)
348	{	589	{
349	if (THISNODE->routerprio)	590	if (THISNODE->routerprio)
350	// the tos setting gets lost here. who cares.	591	// the tos setting gets lost here. who cares.
351	conns[dst - 1]->inject_vpn_packet (pkt);	592	conns[dst - 1]->inject_vpn_packet (pkt);
352	else	593	else
353	slog (L_WARN,	594	slog (L_WARN,
354	_("%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?)."),
355	c->conf->nodename, (const char *)rsi,	596	c->conf->nodename, (const char *)rsi,
356	conns[dst - 1]->conf->nodename);	597	conns[dst - 1]->conf->nodename);
357	}	598	}
358	else	599	else
359	c->recv_vpn_packet (pkt, rsi);	600	c->recv_vpn_packet (pkt, rsi);
360	}	601	}
361	}	602	}
362		603
363	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
364	vpn::ipv4_ev (io_watcher &w, short revents)	635	vpn::ipv4_ev (ev::io &w, int revents)
365	{	636	{
366	if (revents & (POLLIN \| POLLERR))	637	if (revents & EV_READ)
367	{	638	{
368	vpn_packet *pkt = new vpn_packet;	639	vpn_packet *pkt = new vpn_packet;
369	struct sockaddr_in sa;	640	struct sockaddr_in sa;
370	socklen_t sa_len = sizeof (sa);	641	socklen_t sa_len = sizeof (sa);
371	int len;	642	int len;
…		…
376		647
377	if (len > 0)	648	if (len > 0)
378	{	649	{
379	pkt->len = len;	650	pkt->len = len;
380		651
381	// 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
382	// this is slow, but...	653	pkt->skip_hdr (pkt->ipv4_hdr_len ());
383	pkt->skip_hdr (IP_OVERHEAD);
384		654
385	recv_vpn_packet (pkt, si);	655	recv_vpn_packet (pkt, si);
386	}	656	}
387	else	657	else
388	{	658	{
389	// probably ECONNRESET or somesuch	659	// probably ECONNRESET or somesuch
390	slog (L_DEBUG, _("%s: %s"), (const char *)si, strerror (errno));	660	slog (L_DEBUG, _("%s: %s."), (const char *)si, strerror (errno));
391	}	661	}
392		662
393	delete pkt;	663	delete pkt;
394	}	664	}
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	665	else
402	{	666	{
403	slog (L_ERR,	667	slog (L_ERR,
404	_("FATAL: unknown revents %08x in socket, terminating\n"),	668	_("FATAL: unknown revents %08x in socket, exiting.\n"),
405	revents);	669	revents);
406	exit (1);	670	exit (EXIT_FAILURE);
407	}	671	}
408	}	672	}
409		673
410	void	674	#if ENABLE_ICMP
		675	inline void
411	vpn::icmpv4_ev (io_watcher &w, short revents)	676	vpn::icmpv4_ev (ev::io &w, int revents)
412	{	677	{
413	if (revents & (POLLIN \| POLLERR))	678	if (revents & EV_READ)
414	{	679	{
415	vpn_packet *pkt = new vpn_packet;	680	vpn_packet *pkt = new vpn_packet;
416	struct sockaddr_in sa;	681	struct sockaddr_in sa;
417	socklen_t sa_len = sizeof (sa);	682	socklen_t sa_len = sizeof (sa);
418	int len;	683	int len;
…		…
423		688
424	if (len > 0)	689	if (len > 0)
425	{	690	{
426	pkt->len = len;	691	pkt->len = len;
427		692
428	icmphdr hdr = (icmphdr )&((*pkt)[IP_OVERHEAD]);	693	icmp_header hdr = (icmp_header )&((*pkt)[IP_OVERHEAD]);
429		694
430	if (hdr->type == ::conf.icmp_type	695	if (hdr->type == ::conf.icmp_type
431	&& hdr->code == 255)	696	&& hdr->code == 255)
432	{	697	{
433	// 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
434	// this is slow, but...	699	// this is slow, but...
435	pkt->skip_hdr (ICMP_OVERHEAD);	700	pkt->skip_hdr (pkt->ipv4_hdr_len () + (ICMP_OVERHEAD - IP_OVERHEAD));
436		701
437	recv_vpn_packet (pkt, si);	702	recv_vpn_packet (pkt, si);
438	}	703	}
439	}	704	}
440	else	705	else
441	{	706	{
442	// probably ECONNRESET or somesuch	707	// probably ECONNRESET or somesuch
443	slog (L_DEBUG, _("%s: %s"), (const char *)si, strerror (errno));	708	slog (L_DEBUG, _("%s: %s."), (const char *)si, strerror (errno));
444	}	709	}
445		710
446	delete pkt;	711	delete pkt;
447	}	712	}
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	713	else
455	{	714	{
456	slog (L_ERR,	715	slog (L_ERR,
457	_("FATAL: unknown revents %08x in socket, terminating\n"),	716	_("FATAL: unknown revents %08x in socket, exiting.\n"),
458	revents);	717	revents);
459	exit (1);	718	exit (EXIT_FAILURE);
460	}	719	}
461	}	720	}
		721	#endif
462		722
463	void	723	inline void
464	vpn::udpv4_ev (io_watcher &w, short revents)	724	vpn::udpv4_ev (ev::io &w, int revents)
465	{	725	{
466	if (revents & (POLLIN \| POLLERR))	726	if (revents & EV_READ)
467	{	727	{
468	vpn_packet *pkt = new vpn_packet;	728	vpn_packet *pkt = new vpn_packet;
469	struct sockaddr_in sa;	729	struct sockaddr_in sa;
470	socklen_t sa_len = sizeof (sa);	730	socklen_t sa_len = sizeof (sa);
471	int len;	731	int len;
…		…
481	recv_vpn_packet (pkt, si);	741	recv_vpn_packet (pkt, si);
482	}	742	}
483	else	743	else
484	{	744	{
485	// probably ECONNRESET or somesuch	745	// probably ECONNRESET or somesuch
486	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));
487	}	747	}
488		748
489	delete pkt;	749	delete pkt;
490	}	750	}
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	751	else
498	{	752	{
499	slog (L_ERR,	753	slog (L_ERR,
500	_("FATAL: unknown revents %08x in socket, terminating\n"),	754	_("FATAL: unknown revents %08x in socket, exiting.\n"),
501	revents);	755	revents);
502	exit (1);	756	exit (EXIT_FAILURE);
503	}	757	}
504	}	758	}
505		759
506	void	760	inline void
507	vpn::tap_ev (io_watcher &w, short revents)	761	vpn::tap_ev (ev::io &w, int revents)
508	{	762	{
509	if (revents & POLLIN)	763	if (revents & EV_READ)
510	{	764	{
511	/* process data */	765	/* process data */
512	tap_packet *pkt;	766	tap_packet *pkt;
513		767
514	pkt = tap->recv ();	768	pkt = tap->recv ();
515		769
		770	if (!pkt)
		771	return;
		772
		773	if (pkt->len > 14)
		774	{
516	int dst = mac2id (pkt->dst);	775	int dst = mac2id (pkt->dst);
517	int src = mac2id (pkt->src);	776	int src = mac2id (pkt->src);
518		777
519	if (src != THISNODE->id)	778	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	{	779	{
537	// unicast	780	slog (L_ERR, _("FATAL: tap packet not originating on current node received (if-up script not working properly?), exiting."));
538	if (dst != THISNODE->id)	781	exit (EXIT_FAILURE);
539	conns[dst - 1]->inject_data_packet (pkt);
540	}	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);
541	else	792	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);	793	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	}	794	}
554		795
555	delete pkt;	796	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	}	797	}
562	else	798	else
563	abort ();	799	abort ();
564	}	800	}
565		801
566	void	802	inline void
567	vpn::event_cb (time_watcher &w)	803	vpn::event_cb (ev::timer &w, int)
568	{	804	{
569	if (events)	805	if (events)
570	{	806	{
571	if (events & EVENT_SHUTDOWN)	807	if (events & EVENT_SHUTDOWN)
572	{	808	{
573	slog (L_INFO, _("preparing shutdown..."));	809	slog (L_INFO, _("preparing shutdown..."));
574		810
575	shutdown_all ();	811	shutdown_all ();
576
577	remove_pid (pidfilename);	812	remove_pid (conf.pidfilename);
578
579	slog (L_INFO, _("terminating"));	813	slog (L_INFO, _("exiting."));
580		814	exit (EXIT_SUCCESS);
581	exit (0);
582	}	815	}
583		816
584	if (events & EVENT_RECONNECT)	817	if (events & EVENT_RECONNECT)
585	{	818	{
586	slog (L_INFO, _("forced reconnect"));	819	slog (L_INFO, _("forced reconnect."));
587		820
588	reconnect_all ();	821	reconnect_all ();
589	}	822	}
590		823
591	events = 0;	824	events = 0;
592	}	825	}
593
594	w.at = TSTAMP_CANCEL;
595	}	826	}
596		827
597	void	828	void
598	vpn::shutdown_all ()	829	vpn::shutdown_all ()
599	{	830	{
…		…
609		840
610	conns.clear ();	841	conns.clear ();
611		842
612	connection_init ();	843	connection_init ();
613		844
614	for (configuration::node_vector::iterator i = conf.nodes.begin ();	845	for (configuration::node_vector::iterator i = conf.nodes.begin (); i != conf.nodes.end (); ++i)
615	i != conf.nodes.end (); ++i)	846	conns.push_back (new connection (this, *i));
616	{
617	connection *conn = new connection (this);
618		847
619	conn->conf = *i;	848	for (conns_vector::iterator c = conns.begin (); c != conns.end (); ++c)
620	conns.push_back (conn);
621
622	conn->establish_connection ();	849	(*c)->establish_connection ();
623	}
624	}	850	}
625		851
626	connection *vpn::find_router ()	852	bool
		853	vpn::can_direct (conf_node src, conf_node dst) const
627	{	854	{
628	u32 prio = 0;	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	{
629	connection *router = 0;	867	connection *router = 0;
630		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	{
631	for (conns_vector::iterator i = conns.begin (); i != conns.end (); ++i)	917	for (conns_vector::iterator i = conns.begin (); i != conns.end (); ++i)
632	{	918	{
633	connection c = i;	919	connection o = i;
634		920
635	if (c->conf->routerprio > prio	921	if (o->si.valid ()
636	&& c->connectmode == conf_node::C_ALWAYS	922	&& c->si != o->si
637	&& c->conf != THISNODE	923	&& c == find_router_for (o)
638	&& c->ictx && c->octx)	924	&& !can_direct (THISNODE, o->conf))
639	{
640	prio = c->conf->routerprio;
641	router = c;
642	}	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	}
643	}	930	}
644
645	return router;
646	}	931	}
647		932
		933	void
648	void vpn::send_connect_request (int id)	934	vpn::send_connect_request (connection *c)
649	{	935	{
650	connection *c = find_router ();	936	connection *r = find_router_for (c);
651		937
652	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);
653	c->send_connect_request (id);	942	r->send_connect_request (c->conf->id);
		943	}
654	else	944	else
655	// 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."),
656	for (conns_vector::iterator i = conns.begin (); i != conns.end (); ++i)	946	c->conf->nodename);
657	if ((*i)->conf->routerprio)
658	(*i)->establish_connection ();
659	}	947	}
660		948
661	void	949	void
662	connection::dump_status ()	950	connection::dump_status ()
663	{	951	{
664	slog (L_NOTICE, _("node %s (id %d)"), conf->nodename, conf->id);	952	slog (L_NOTICE, _("node %s (id %d)"), conf->nodename, conf->id);
665	slog (L_NOTICE, _(" connectmode %d (%d) / sockaddr %s / minor %d"),	953	slog (L_NOTICE, _(" connectmode %d (%d) / sockaddr %s / minor %d"),
666	connectmode, conf->connectmode, (const char *)si, (int)prot_minor);	954	connectmode, conf->connectmode, (const char *)si, (int)prot_minor);
667	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"),
668	(long)ictx, (long)octx, (int)oseqno, (int)retry_cnt);	956	(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	}	957	}
672		958
673	void	959	void
674	vpn::dump_status ()	960	vpn::dump_status ()
675	{	961	{
676	slog (L_NOTICE, _("BEGIN status dump (%ld)"), (long)NOW);	962	slog (L_NOTICE, _("BEGIN status dump (%ld)"), (long)ev_now ());
677		963
678	for (conns_vector::iterator c = conns.begin (); c != conns.end (); ++c)	964	for (conns_vector::iterator c = conns.begin (); c != conns.end (); ++c)
679	(*c)->dump_status ();	965	(*c)->dump_status ();
680		966
681	slog (L_NOTICE, _("END status dump"));	967	slog (L_NOTICE, _("END status dump"));
682	}	968	}
683		969
684	vpn::vpn (void)	970	vpn::vpn (void)
		971	{
685	: event (this, &vpn::event_cb)	972	event .set<vpn, &vpn::event_cb > (this);
686	, udpv4_ev_watcher (this, &vpn::udpv4_ev)	973	udpv4_ev_watcher .set<vpn, &vpn::udpv4_ev > (this);
687	, ipv4_ev_watcher (this, &vpn::ipv4_ev)	974	ipv4_ev_watcher .set<vpn, &vpn::ipv4_ev > (this);
688	#if ENABLE_TCP	975	#if ENABLE_TCP
689	, tcpv4_ev_watcher (this, &vpn::tcpv4_ev)	976	tcpv4_ev_watcher .set<vpn, &vpn::tcpv4_ev > (this);
690	#endif	977	#endif
691	#if ENABLE_ICMP	978	#if ENABLE_ICMP
692	, icmpv4_ev_watcher(this, &vpn::icmpv4_ev)	979	icmpv4_ev_watcher.set<vpn, &vpn::icmpv4_ev> (this);
693	#endif	980	#endif
694	, tap_ev_watcher (this, &vpn::tap_ev)	981	#if ENABLE_DNS
695	{	982	dnsv4_ev_watcher .set<vpn, &vpn::dnsv4_ev > (this);
		983	#endif
		984	tap_ev_watcher .set<vpn, &vpn::tap_ev > (this);
696	}	985	}
697		986
698	vpn::~vpn ()	987	vpn::~vpn ()
699	{	988	{
700	}	989	}

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Comparing gvpe/src/vpn.C (file contents): Revision 1.10 by pcg, Tue Apr 8 03:25:35 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 1.10 by pcg, Tue Apr 8 03:25:35 2003 UTC vs.
Revision 1.70 by root, Thu Oct 6 03:03:09 2022 UTC