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

Comparing gvpe/src/vpn.C (file contents):
Revision 1.2 by pcg, Wed Apr 2 05:15:00 2003 UTC vs.
Revision 1.66 by root, Thu Jul 18 13:35:16 2013 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>
31	#include <netinet/in.h>	43	#include <sys/stat.h>
32	#include <arpa/inet.h>
33	#include <errno.h>	44	#include <errno.h>
34	#include <time.h>	45	#include <time.h>
35	#include <unistd.h>	46	#include <unistd.h>
		47	#include <fcntl.h>
		48	#include <sys/socket.h>
		49
		50	#include "netcompat.h"
36		51
37	#include "pidfile.h"	52	#include "pidfile.h"
38		53
39	#include "connection.h"	54	#include "connection.h"
40	#include "util.h"	55	#include "util.h"
41	#include "vpn.h"	56	#include "vpn.h"
42		57
43	#if ENABLE_TCP	58	using namespace std;
44	# include <map>	59
45	# include <unistd.h>	60	vpn network; // THE vpn (bad design...)
46	# include <fcntl.h>
47	# include <sys/poll.h>
48	#endif
49		61
50	/////////////////////////////////////////////////////////////////////////////	62	/////////////////////////////////////////////////////////////////////////////
51		63
52	const char *vpn::script_if_up ()	64	static void inline
		65	set_tos (int fd, int &tos_prev, int tos)
		66	{
		67	#if defined(SOL_IP) && defined(IP_TOS)
		68	if (tos_prev == tos)
		69	return;
		70
		71	tos_prev = tos;
		72	setsockopt (fd, SOL_IP, IP_TOS, &tos, sizeof tos);
		73	#endif
		74	}
		75
		76	void
		77	vpn::script_init_env ()
53	{	78	{
54	// the tunnel device mtu should be the physical mtu - overhead	79	// the tunnel device mtu should be the physical mtu - overhead
55	// the tricky part is rounding to the cipher key blocksize	80	// the tricky part is rounding to the cipher key blocksize
56	int mtu = conf.mtu - ETH_OVERHEAD - VPE_OVERHEAD - MAX_OVERHEAD;	81	int mtu = conf.mtu - ETH_OVERHEAD - VPE_OVERHEAD - MAX_OVERHEAD;
57	mtu += ETH_OVERHEAD - 6 - 6; // now we have the data portion	82	mtu += ETH_OVERHEAD - 6 - 6; // now we have the data portion
58	mtu -= mtu % EVP_CIPHER_block_size (CIPHER); // round	83	mtu -= mtu % BLOCK_SIZE (CIPHER); // round
59	mtu -= ETH_OVERHEAD - 6 - 6; // and get interface mtu again	84	mtu -= ETH_OVERHEAD - 6 - 6; // and get interface mtu again
60		85
61	char *env;	86	char *env;
62	asprintf (&env, "CONFBASE=%s", confbase);	87	asprintf (&env, "CONFBASE=%s", confbase); putenv (env);
63	putenv (env);
64	asprintf (&env, "NODENAME=%s", THISNODE->nodename);
65	putenv (env);
66	asprintf (&env, "NODEID=%d", THISNODE->id);
67	putenv (env);
68	asprintf (&env, "IFNAME=%s", tap->interface ());	88	asprintf (&env, "IFNAME=%s", tap->interface ()); putenv (env);
69	putenv (env);	89	asprintf (&env, "IFTYPE=%s", IFTYPE); putenv (env);
		90	asprintf (&env, "IFSUBTYPE=%s", IFSUBTYPE); putenv (env);
70	asprintf (&env, "MTU=%d", mtu);	91	asprintf (&env, "MTU=%d", mtu); putenv (env);
71	putenv (env);	92	asprintf (&env, "NODES=%d", conns.size ()); putenv (env);
72	asprintf (&env, "MAC=%02x:%02x:%02x:%02x:%02x:%02x",	93	asprintf (&env, "NODEID=%d", THISNODE->id); putenv (env);
73	0xfe, 0xfd, 0x80, 0x00, THISNODE->id >> 8,
74	THISNODE->id & 0xff);
75	putenv (env);
76		94
77	return ::conf.script_if_up ? ::conf.script_if_up : "if-up";	95	conns [THISNODE->id - 1]->script_init_env ("");
		96
		97	for (conns_vector::iterator c = conns.begin (); c != conns.end (); ++c)
		98	{
		99	char ext[16];
		100	snprintf (ext, 16, "_%d", (*c)->conf->id);
		101	(*c)->script_init_env (ext);
		102	}
		103	}
		104
		105	inline const char *
		106	vpn::script_if_init ()
		107	{
		108	script_init_env ();
		109
		110	return tap->if_up ();
		111	}
		112
		113	inline const char *
		114	vpn::script_if_up ()
		115	{
		116	script_init_env ();
		117
		118	return conf.config_filename (::conf.script_if_up, "if-up");
		119	}
		120
		121	int
		122	vpn::setup_socket (u8 prot, int family, int type, int proto)
		123	{
		124	int fd = socket (family, type, proto);
		125
		126	if (fd < 0)
		127	{
		128	slog (L_ERR, _("unable to create %s socket: %s."), strprotocol (prot), strerror (errno));
		129	return fd;
		130	}
		131
		132	fcntl (fd, F_SETFL, O_NONBLOCK);
		133	fcntl (fd, F_SETFD, FD_CLOEXEC);
		134
		135	#ifdef SO_MARK
		136	if (::conf.nfmark)
		137	if (setsockopt (fd, SOL_SOCKET, SO_MARK, &::conf.nfmark, sizeof ::conf.nfmark))
		138	slog (L_WARN, _("unable to set nfmark on %s socket: %s"), strprotocol (prot), strerror (errno));
		139	#endif
		140
		141	return fd;
78	}	142	}
79		143
80	int	144	int
81	vpn::setup ()	145	vpn::setup ()
82	{	146	{
		147	int success = 0;
		148
		149	ipv4_tos = -1;
83	udpv4_fd = -1;	150	ipv4_fd = -1;
84		151
85	if (THISNODE->protocols & PROT_UDPv4)	152	if (THISNODE->protocols & PROT_IPv4 && ::conf.ip_proto)
86	{	153	{
87	udpv4_fd = socket (PF_INET, SOCK_DGRAM, IPPROTO_UDP);	154	ipv4_fd = setup_socket (PROT_IPv4, PF_INET, SOCK_RAW, ::conf.ip_proto);
88		155
89	if (udpv4_fd < 0)	156	if (ipv4_fd < 0)
90	return -1;	157	return -1;
91		158
92	sockinfo si (THISNODE, PROT_UDPv4);	159	#if defined(SOL_IP) && defined(IP_MTU_DISCOVER)
93
94	if (bind (udpv4_fd, si.sav4 (), si.salenv4 ()))
95	{
96	slog (L_ERR, _("can't bind udpv4 on %s: %s"), (const char *)si, strerror (errno));
97	exit (1);
98	}
99
100	#ifdef IP_MTU_DISCOVER
101	// this I really consider a linux bug. I am neither connected	160	// this I really consider a linux bug. I am neither connected
102	// nor do I fragment myself. Linux still sets DF and doesn't	161	// nor do I fragment myself. Linux still sets DF and doesn't
103	// fragment for me sometimes.	162	// fragment for me sometimes.
104	{	163	{
105	int oval = IP_PMTUDISC_DONT;	164	int oval = IP_PMTUDISC_DONT;
106	setsockopt (udpv4_fd, SOL_IP, IP_MTU_DISCOVER, &oval, sizeof oval);	165	setsockopt (ipv4_fd, SOL_IP, IP_MTU_DISCOVER, &oval, sizeof oval);
		166	}
		167	#endif
		168
		169	sockinfo si (THISNODE, PROT_IPv4);
		170
		171	if (bind (ipv4_fd, si.sav4 (), si.salenv4 ()))
		172	{
		173	slog (L_ERR, _("can't bind ipv4 socket on %s: %s, exiting."), (const char *)si, strerror (errno));
		174	return -1;
107	}	175	}
108	#endif	176
		177	ipv4_ev_watcher.start (ipv4_fd, EV_READ);
		178	++success;
		179	}
		180	else
		181	THISNODE->protocols &= ~PROT_IPv4;
		182
		183	udpv4_tos = -1;
		184	udpv4_fd = -1;
		185
		186	if (THISNODE->protocols & PROT_UDPv4 && THISNODE->udp_port)
		187	{
		188	udpv4_fd = setup_socket (PROT_UDPv4, PF_INET, SOCK_DGRAM, IPPROTO_UDP);
		189
		190	if (udpv4_fd < 0)
		191	return -1;
109		192
110	// standard daemon practise...	193	// standard daemon practise...
111	{	194	{
112	int oval = 1;	195	int oval = 1;
113	setsockopt (udpv4_fd, SOL_SOCKET, SO_REUSEADDR, &oval, sizeof oval);	196	setsockopt (udpv4_fd, SOL_SOCKET, SO_REUSEADDR, &oval, sizeof oval);
114	}	197	}
115		198
116	udpv4_ev_watcher.start (udpv4_fd, POLLIN);	199	#if defined(SOL_IP) && defined(IP_MTU_DISCOVER)
117	}
118
119	ipv4_fd = -1;
120	if (THISNODE->protocols & PROT_IPv4)
121	{
122	ipv4_fd = socket (PF_INET, SOCK_RAW, ::conf.ip_proto);
123
124	if (ipv4_fd < 0)
125	return -1;
126
127	sockinfo si (THISNODE, PROT_IPv4);
128
129	if (bind (ipv4_fd, si.sav4 (), si.salenv4 ()))
130	{
131	slog (L_ERR, _("can't bind ipv4 socket on %s: %s"), (const char *)si, strerror (errno));
132	exit (1);
133	}
134
135	#ifdef IP_MTU_DISCOVER
136	// this I really consider a linux bug. I am neither connected	200	// this I really consider a linux bug. I am neither connected
137	// nor do I fragment myself. Linux still sets DF and doesn't	201	// nor do I fragment myself. Linux still sets DF and doesn't
138	// fragment for me sometimes.	202	// fragment for me sometimes.
139	{	203	{
140	int oval = IP_PMTUDISC_DONT;	204	int oval = IP_PMTUDISC_DONT;
		205	setsockopt (udpv4_fd, SOL_IP, IP_MTU_DISCOVER, &oval, sizeof oval);
		206	}
		207	#endif
		208
		209	sockinfo si (THISNODE, PROT_UDPv4);
		210
		211	if (bind (udpv4_fd, si.sav4 (), si.salenv4 ()))
		212	{
		213	slog (L_ERR, _("can't bind udpv4 on %s: %s, exiting."), (const char *)si, strerror (errno));
		214	return -1;
		215	}
		216
		217	udpv4_ev_watcher.start (udpv4_fd, EV_READ);
		218	++success;
		219	}
		220	else
		221	THISNODE->protocols &= ~PROT_UDPv4;
		222
		223	icmpv4_tos = -1;
		224	icmpv4_fd = -1;
		225
		226	#if ENABLE_ICMP
		227	if (THISNODE->protocols & PROT_ICMPv4)
		228	{
		229	icmpv4_fd = setup_socket (PROT_ICMPv4, PF_INET, SOCK_RAW, IPPROTO_ICMP);
		230
		231	if (icmpv4_fd < 0)
		232	return -1;
		233
		234	#ifdef ICMP_FILTER
		235	{
		236	icmp_filter oval;
		237	oval.data = 0xffffffff;
		238	if (::conf.icmp_type < 32)
		239	oval.data &= ~(1 << ::conf.icmp_type);
		240
		241	setsockopt (icmpv4_fd, SOL_RAW, ICMP_FILTER, &oval, sizeof oval);
		242	}
		243	#endif
		244
		245	#if defined(SOL_IP) && defined(IP_MTU_DISCOVER)
		246	// this I really consider a linux bug. I am neither connected
		247	// nor do I fragment myself. Linux still sets DF and doesn't
		248	// fragment for me sometimes.
		249	{
		250	int oval = IP_PMTUDISC_DONT;
141	setsockopt (ipv4_fd, SOL_IP, IP_MTU_DISCOVER, &oval, sizeof oval);	251	setsockopt (icmpv4_fd, SOL_IP, IP_MTU_DISCOVER, &oval, sizeof oval);
		252	}
		253	#endif
		254
		255	sockinfo si (THISNODE, PROT_ICMPv4);
		256
		257	if (bind (icmpv4_fd, si.sav4 (), si.salenv4 ()))
		258	{
		259	slog (L_ERR, _("can't bind icmpv4 on %s: %s, exiting."), (const char *)si, strerror (errno));
		260	return -1;
142	}	261	}
143	#endif
144		262
145	ipv4_ev_watcher.start (ipv4_fd, POLLIN);	263	icmpv4_ev_watcher.start (icmpv4_fd, EV_READ);
		264	++success;
146	}	265	}
		266	#endif
		267
		268	tcpv4_fd = -1;
147		269
148	#if ENABLE_TCP	270	#if ENABLE_TCP
149	if (THISNODE->protocols & PROT_TCPv4)	271	if (THISNODE->protocols & PROT_TCPv4 && THISNODE->tcp_port)
150	{	272	{
151	tcpv4_fd = socket (PF_INET, SOCK_STREAM, IPPROTO_TCP);	273	tcpv4_fd = setup_socket (PROT_TCPv4, PF_INET, SOCK_STREAM, IPPROTO_TCP);
152		274
153	if (tcpv4_fd < 0)	275	if (tcpv4_fd < 0)
154	return -1;	276	return -1;
155		277
156	sockinfo si (THISNODE, PROT_TCPv4);
157
158	if (bind (tcpv4_fd, si.sav4 (), si.salenv4 ()))
159	{
160	slog (L_ERR, _("can't bind tcpv4 on %s: %s"), (const char *)si, strerror (errno));
161	exit (1);
162	}
163
164	if (listen (tcpv4_fd, 5))
165	{
166	slog (L_ERR, _("can't listen tcpv4 on %s: %s"), (const char *)si, strerror (errno));
167	exit (1);
168	}
169
170	// standard daemon practise...	278	// standard daemon practise...
171	{	279	{
172	int oval = 1;	280	int oval = 1;
173	setsockopt (tcpv4_fd, SOL_SOCKET, SO_REUSEADDR, &oval, sizeof oval);	281	setsockopt (tcpv4_fd, SOL_SOCKET, SO_REUSEADDR, &oval, sizeof oval);
174	}	282	}
175		283
		284	sockinfo si (THISNODE, PROT_TCPv4);
		285
		286	if (bind (tcpv4_fd, si.sav4 (), si.salenv4 ()))
		287	{
		288	slog (L_ERR, _("can't bind tcpv4 on %s: %s, exiting."), (const char *)si, strerror (errno));
		289	return -1;
		290	}
		291
		292	if (listen (tcpv4_fd, 5))
		293	{
		294	slog (L_ERR, _("can't listen tcpv4 on %s: %s, exiting."), (const char *)si, strerror (errno));
		295	return -1;
		296	}
		297
176	tcpv4_accept_watcher.start (tcpv4_fd, POLLIN);	298	tcpv4_ev_watcher.start (tcpv4_fd, EV_READ);
		299	++success;
		300	}
		301	else
		302	THISNODE->protocols &= ~PROT_TCPv4;
		303	#endif
		304
		305	dnsv4_tos = -1;
		306	dnsv4_fd = -1;
		307
		308	#if ENABLE_DNS
		309	if (THISNODE->protocols & PROT_DNSv4)
		310	{
		311	dns_forwarder.set (::conf.dns_forw_host, ::conf.dns_forw_port, PROT_DNSv4);
		312
		313	dnsv4_fd = setup_socket (PROT_DNSv4, PF_INET, SOCK_DGRAM, IPPROTO_UDP);
		314
		315	if (dnsv4_fd < 0)
		316	return -1;
		317
		318	# if defined(SOL_IP) && defined(IP_MTU_DISCOVER)
		319	// this I really consider a linux bug. I am neither connected
		320	// nor do I fragment myself. Linux still sets DF and doesn't
		321	// fragment for me sometimes.
		322	{
		323	int oval = IP_PMTUDISC_DONT;
		324	setsockopt (dnsv4_fd, SOL_IP, IP_MTU_DISCOVER, &oval, sizeof oval);
177	}	325	}
178	#endif	326	# endif
		327
		328	// standard daemon practise...
		329	{
		330	int oval = 1;
		331	setsockopt (dnsv4_fd, SOL_SOCKET, SO_REUSEADDR, &oval, sizeof oval);
		332	}
		333
		334	sockinfo si (THISNODE->dns_hostname,
		335	THISNODE->dns_hostname ? THISNODE->dns_port : 0,
		336	PROT_DNSv4);
		337
		338	if (bind (dnsv4_fd, si.sav4 (), si.salenv4 ()))
		339	{
		340	slog (L_ERR, _("can't bind dnsv4 on %s: %s, exiting."), (const char *)si, strerror (errno));
		341	return -1;
		342	}
		343
		344	dnsv4_ev_watcher.start (dnsv4_fd, EV_READ);
		345	++success;
		346	}
		347	#endif
		348
		349	/////////////////////////////////////////////////////////////////////////////
		350
		351	if (!success)
		352	{
		353	slog (L_ERR, _("no protocols enabled."));
		354	return -1;
		355	}
		356
		357	reconnect_all ();
		358
		359	/////////////////////////////////////////////////////////////////////////////
179		360
180	tap = new tap_device ();	361	tap = new tap_device ();
181	if (!tap) //D this, of course, never catches	362	if (!tap) //D this, of course, never catches
182	{	363	{
183	slog (L_ERR, _("cannot create network interface '%s'"), conf.ifname);	364	slog (L_ERR, _("cannot create network interface '%s'."), conf.ifname);
184	exit (1);	365	return -1;
185	}	366	}
186		367
187	run_script (run_script_cb (this, &vpn::script_if_up), true);	368	fcntl (tap->fd, F_SETFD, FD_CLOEXEC);
188		369
		370	run_script_cb cb;
		371	cb.set<vpn, &vpn::script_if_init> (this);
		372
		373	if (tap->if_up () &&
		374	!run_script (cb, true))
		375	{
		376	slog (L_ERR, _("interface initialization command '%s' failed."),
		377	tap->if_up ());
		378	return -1;
		379	}
		380
		381	cb.set<vpn, &vpn::script_if_up> (this);
		382	if (!run_script (cb, true))
		383	{
		384	slog (L_ERR, _("if-up command execution failed."));
		385	return -1;
		386	}
		387
189	tap_ev_watcher.start (tap->fd, POLLIN);	388	tap_ev_watcher.start (tap->fd, EV_READ);
190
191	reconnect_all ();
192		389
193	return 0;	390	return 0;
194	}	391	}
195		392
		393	bool
		394	vpn::drop_privileges ()
		395	{
		396	if (::conf.change_root)
		397	{
		398	if (!strcmp (::conf.change_root, "/"))
		399	{
		400	char dir [L_tmpnam];
		401	if (!tmpnam (dir))
		402	{
		403	slog (L_CRIT, _("unable to create anonymous root path."));
		404	return false;
		405	}
		406
		407	if (mkdir (dir, 0700))
		408	{
		409	slog (L_CRIT, _("unable to crate anonymous root directory."));
		410	return false;
		411	}
		412
		413	if (chdir (dir))
		414	{
		415	slog (L_CRIT, _("unable to change to anonymous root directory."));
		416	return false;
		417	}
		418
		419	if (rmdir (dir))
		420	slog (L_ERR, _("unable to remove anonymous root directory, continuing."));
		421	}
		422	else
		423	{
		424	if (chdir (::conf.change_root))
		425	{
		426	slog (L_CRIT, _("%s: unable to change to specified root directory."), ::conf.change_root);
		427	return false;
		428	}
		429	}
		430
		431	if (chroot ("."))
		432	{
		433	slog (L_CRIT, _("unable to set new root directory."));
		434	return false;
		435	}
		436
		437	if (chdir ("/"))
		438	{
		439	slog (L_CRIT, _("unable to set cwd to new root directory."));
		440	return false;
		441	}
		442	}
		443
		444	if (::conf.change_gid)
		445	if (setgid (::conf.change_gid))
		446	{
		447	slog (L_CRIT, _("unable to change group id to %d."), ::conf.change_gid);
		448	return false;
		449	}
		450
		451	if (::conf.change_uid)
		452	if (setuid (::conf.change_uid))
		453	{
		454	slog (L_CRIT, _("unable to change user id to %d."), ::conf.change_uid);
		455	return false;
		456	}
		457
		458	return true;
		459	}
		460
		461	bool
		462	vpn::send_ipv4_packet (vpn_packet *pkt, const sockinfo &si, int tos)
		463	{
		464	set_tos (ipv4_fd, ipv4_tos, tos);
		465	sendto (ipv4_fd, &((*pkt)[0]), pkt->len, 0, si.sav4 (), si.salenv4 ());
		466
		467	return true;
		468	}
		469
		470	static u16
		471	ipv4_checksum (u16 *data, unsigned int len)
		472	{
		473	// use 32 bit accumulator and fold back carry bits at the end
		474	u32 sum = 0;
		475
		476	while (len > 1)
		477	{
		478	sum += *data++;
		479	len -= 2;
		480	}
		481
		482	// odd byte left?
		483	if (len)
		484	sum += (u8 )data;
		485
		486	// add back carry bits
		487	sum = (sum >> 16) + (sum & 0xffff); // lo += hi
		488	sum += (sum >> 16); // carry
		489
		490	return ~sum;
		491	}
		492
		493	#if ENABLE_ICMP
		494	bool
		495	vpn::send_icmpv4_packet (vpn_packet *pkt, const sockinfo &si, int tos)
		496	{
		497	pkt->unshift_hdr (4);
		498
		499	icmp_header hdr = (icmp_header )&((*pkt)[0]);
		500	hdr->type = ::conf.icmp_type;
		501	hdr->code = 255;
		502	hdr->checksum = 0;
		503	hdr->checksum = ipv4_checksum ((u16 *)hdr, pkt->len);
		504
		505	set_tos (icmpv4_fd, icmpv4_tos, tos);
		506	sendto (icmpv4_fd, &((*pkt)[0]), pkt->len, 0, si.sav4 (), si.salenv4 ());
		507
		508	return true;
		509	}
		510	#endif
		511
		512	bool
		513	vpn::send_udpv4_packet (vpn_packet *pkt, const sockinfo &si, int tos)
		514	{
		515	set_tos (udpv4_fd, udpv4_tos, tos);
		516	sendto (udpv4_fd, &((*pkt)[0]), pkt->len, 0, si.sav4 (), si.salenv4 ());
		517
		518	return true;
		519	}
		520
196	void	521	void
197	vpn::send_ipv4_packet (vpn_packet *pkt, const sockinfo &si, int tos)	522	vpn::inject_data_packet (tap_packet *pkt, int dst)
198	{	523	{
199	setsockopt (ipv4_fd, SOL_IP, IP_TOS, &tos, sizeof tos);	524	if (dst)
200	sendto (ipv4_fd, &((*pkt)[0]), pkt->len, 0, si.sav4 (), si.salenv4 ());	525	{
201	}	526	// unicast
202		527	if (dst != THISNODE->id)
203	void	528	conns[dst - 1]->inject_data_packet (pkt);
204	vpn::send_udpv4_packet (vpn_packet *pkt, const sockinfo &si, int tos)	529	}
205	{	530	else
206	setsockopt (udpv4_fd, SOL_IP, IP_TOS, &tos, sizeof tos);	531	{
207	sendto (udpv4_fd, &((*pkt)[0]), pkt->len, 0, si.sav4 (), si.salenv4 ());	532	// broadcast, this is ugly, but due to the security policy
		533	// we have to connect to all hosts...
		534	for (conns_vector::iterator c = conns.begin (); c != conns.end (); ++c)
		535	if ((*c)->conf != THISNODE)
		536	(*c)->inject_data_packet (pkt);
		537	}
208	}	538	}
209		539
210	void	540	void
211	vpn::recv_vpn_packet (vpn_packet *pkt, const sockinfo &rsi)	541	vpn::recv_vpn_packet (vpn_packet *pkt, const sockinfo &rsi)
212	{	542	{
213	unsigned int src = pkt->src ();	543	unsigned int src = pkt->src ();
214	unsigned int dst = pkt->dst ();	544	unsigned int dst = pkt->dst ();
215		545
216	slog (L_NOISE, _("<<?/%s received possible vpn packet type %d from %d to %d, length %d"),	546	slog (L_NOISE, _("<<?/%s received possible vpn packet type %d from %d to %d, length %d."),
217	(const char *)rsi, pkt->typ (), pkt->src (), pkt->dst (), pkt->len);	547	(const char *)rsi, pkt->typ (), pkt->src (), pkt->dst (), pkt->len);
218		548
219	if (src == 0 \|\| src > conns.size ()	549	if (src == 0 \|\| src > conns.size ()
220	\|\| dst > conns.size ()	550	\|\| dst > conns.size ()
221	\|\| pkt->typ () >= vpn_packet::PT_MAX)	551	\|\| pkt->typ () >= vpn_packet::PT_MAX)
222	slog (L_WARN, _("(%s): received corrupted packet type %d (src %d, dst %d)"),	552	slog (L_WARN, _("(%s): received corrupted packet type %d (src %d, dst %d)."),
223	(const char *)rsi, pkt->typ (), pkt->src (), pkt->dst ());	553	(const char *)rsi, pkt->typ (), pkt->src (), pkt->dst ());
224	else	554	else
225	{	555	{
226	connection *c = conns[src - 1];	556	connection *c = conns[src - 1];
227		557
228	if (dst == 0 && !THISNODE->routerprio)	558	if (dst == 0)
229	slog (L_WARN, _("%s(%s): received broadcast, but we are no router"),	559	slog (L_WARN, _("%s(%s): received broadcast (protocol violation)."),
230	c->conf->nodename, (const char *)rsi);	560	c->conf->nodename, (const char *)rsi);
231	else if (dst != 0 && dst != THISNODE->id)	561	else if (dst != THISNODE->id)
232	// FORWARDING NEEDED ;)	562	{
		563	if (THISNODE->routerprio)
		564	// the tos setting gets lost here. who cares.
		565	conns[dst - 1]->inject_vpn_packet (pkt);
		566	else
233	slog (L_WARN,	567	slog (L_WARN,
234	_("received frame for node %d ('%s') from %s, but this is node %d ('%s')"),	568	_("%s(%s): request to forward packet to %s, but we are no router (config mismatch?)."),
		569	c->conf->nodename, (const char *)rsi,
235	dst, conns[dst - 1]->conf->nodename,	570	conns[dst - 1]->conf->nodename);
236	(const char *)rsi,	571	}
237	THISNODE->id, THISNODE->nodename);
238	else	572	else
239	c->recv_vpn_packet (pkt, rsi);	573	c->recv_vpn_packet (pkt, rsi);
240	}	574	}
241	}	575	}
242		576
243	void	577	bool
244	vpn::udpv4_ev (int fd, short revents)	578	vpn::send_vpn_packet (vpn_packet *pkt, const sockinfo &si, int tos)
245	{	579	{
246	if (revents & (POLLIN \| POLLERR))	580	switch (si.prot)
		581	{
		582	case PROT_IPv4:
		583	return send_ipv4_packet (pkt, si, tos);
		584
		585	case PROT_UDPv4:
		586	return send_udpv4_packet (pkt, si, tos);
		587
		588	#if ENABLE_TCP
		589	case PROT_TCPv4:
		590	return send_tcpv4_packet (pkt, si, tos);
		591	#endif
		592	#if ENABLE_ICMP
		593	case PROT_ICMPv4:
		594	return send_icmpv4_packet (pkt, si, tos);
		595	#endif
		596	#if ENABLE_DNS
		597	case PROT_DNSv4:
		598	return send_dnsv4_packet (pkt, si, tos);
		599	#endif
		600	default:
		601	slog (L_CRIT, _("%s: FATAL: trying to send packet with unsupported protocol."), (const char *)si);
		602	}
		603
		604	return false;
		605	}
		606
		607	inline void
		608	vpn::ipv4_ev (ev::io &w, int revents)
		609	{
		610	if (revents & EV_READ)
247	{	611	{
248	vpn_packet *pkt = new vpn_packet;	612	vpn_packet *pkt = new vpn_packet;
249	struct sockaddr_in sa;	613	struct sockaddr_in sa;
250	socklen_t sa_len = sizeof (sa);	614	socklen_t sa_len = sizeof (sa);
251	int len;	615	int len;
252		616
253	len = recvfrom (fd, &((pkt)[0]), MAXSIZE, 0, (sockaddr )&sa, &sa_len);	617	len = recvfrom (w.fd, &((pkt)[0]), MAXSIZE, 0, (sockaddr )&sa, &sa_len);
254		618
255	sockinfo si(sa);	619	sockinfo si(sa, PROT_IPv4);
256		620
257	if (len > 0)	621	if (len > 0)
258	{	622	{
259	pkt->len = len;	623	pkt->len = len;
260		624
		625	// raw sockets deliver the ipv4 header, but don't expect it on sends
		626	pkt->skip_hdr (pkt->ipv4_hdr_len ());
		627
261	recv_vpn_packet (pkt, si);	628	recv_vpn_packet (pkt, si);
262	}	629	}
263	else	630	else
264	{	631	{
265	// probably ECONNRESET or somesuch	632	// probably ECONNRESET or somesuch
266	slog (L_DEBUG, _("%s: %s"), (const char *)si, strerror (errno));	633	slog (L_DEBUG, _("%s: %s."), (const char *)si, strerror (errno));
267	}	634	}
268		635
269	delete pkt;	636	delete pkt;
270	}	637	}
271	else if (revents & POLLHUP)
272	{
273	// this cannot ;) happen on udp sockets
274	slog (L_ERR, _("FATAL: POLLHUP on udp v4 fd, terminating."));
275	exit (1);
276	}
277	else	638	else
278	{	639	{
279	slog (L_ERR,	640	slog (L_ERR,
280	_("FATAL: unknown revents %08x in socket, terminating\n"),	641	_("FATAL: unknown revents %08x in socket, exiting.\n"),
281	revents);	642	revents);
282	exit (1);	643	exit (EXIT_FAILURE);
283	}	644	}
284	}	645	}
285		646
286	void	647	#if ENABLE_ICMP
287	vpn::ipv4_ev (int fd, short revents)	648	inline void
		649	vpn::icmpv4_ev (ev::io &w, int revents)
288	{	650	{
289	if (revents & (POLLIN \| POLLERR))	651	if (revents & EV_READ)
290	{	652	{
291	vpn_packet *pkt = new vpn_packet;	653	vpn_packet *pkt = new vpn_packet;
292	struct sockaddr_in sa;	654	struct sockaddr_in sa;
293	socklen_t sa_len = sizeof (sa);	655	socklen_t sa_len = sizeof (sa);
294	int len;	656	int len;
295		657
296	len = recvfrom (fd, &((pkt)[0]), MAXSIZE, 0, (sockaddr )&sa, &sa_len);	658	len = recvfrom (w.fd, &((pkt)[0]), MAXSIZE, 0, (sockaddr )&sa, &sa_len);
297		659
298	sockinfo si(sa, PROT_IPv4);	660	sockinfo si(sa, PROT_ICMPv4);
299		661
300	if (len > 0)	662	if (len > 0)
301	{	663	{
302	pkt->len = len;	664	pkt->len = len;
303		665
		666	icmp_header hdr = (icmp_header )&((*pkt)[IP_OVERHEAD]);
		667
		668	if (hdr->type == ::conf.icmp_type
		669	&& hdr->code == 255)
		670	{
304	// raw sockets deliver the ipv4, but don't expect it on sends	671	// raw sockets deliver the ipv4, but don't expect it on sends
305	// this is slow, but...	672	// this is slow, but...
306	pkt->skip_hdr (IP_OVERHEAD);	673	pkt->skip_hdr (pkt->ipv4_hdr_len () + (ICMP_OVERHEAD - IP_OVERHEAD));
307		674
308	recv_vpn_packet (pkt, si);	675	recv_vpn_packet (pkt, si);
		676	}
309	}	677	}
310	else	678	else
311	{	679	{
312	// probably ECONNRESET or somesuch	680	// probably ECONNRESET or somesuch
313	slog (L_DEBUG, _("%s: %s"), (const char *)si, strerror (errno));	681	slog (L_DEBUG, _("%s: %s."), (const char *)si, strerror (errno));
314	}	682	}
315		683
316	delete pkt;	684	delete pkt;
317	}	685	}
318	else if (revents & POLLHUP)
319	{
320	// this cannot ;) happen on udp sockets
321	slog (L_ERR, _("FATAL: POLLHUP on ipv4 fd, terminating."));
322	exit (1);
323	}
324	else	686	else
325	{	687	{
326	slog (L_ERR,	688	slog (L_ERR,
327	_("FATAL: unknown revents %08x in socket, terminating\n"),	689	_("FATAL: unknown revents %08x in socket, exiting.\n"),
328	revents);	690	revents);
329	exit (1);	691	exit (EXIT_FAILURE);
330	}
331	}
332
333	#if ENABLE_TCP
334
335	struct tcp_info {
336	int fd;
337	bool ok;
338	io_watcher r;
339
340	tcp_info (vpn *v)
341	: r(v, &vpn::tcpv4_ev)
342	{	692	}
343	fd = -1;	693	}
		694	#endif
		695
		696	inline void
		697	vpn::udpv4_ev (ev::io &w, int revents)
		698	{
		699	if (revents & EV_READ)
344	}	700	{
345		701	vpn_packet *pkt = new vpn_packet;
346	~tcp_info () { close (fd); }
347	};
348
349	typedef map<sockinfo, tcp_info *> tcp_si_map;
350	typedef map<int, tcp_info *> tcp_fd_map; // unneecssary if iom would be cooler
351	static tcp_si_map tcp_si;
352	static tcp_fd_map tcp_fd;
353
354	void
355	vpn::send_tcpv4_packet (vpn_packet *pkt, const sockinfo &si, int tos)
356	{
357	tcp_si_map::iterator info = tcp_si.find (si);
358
359	if (info == tcp_si.end ())
360	{
361	// woaw, the first lost packet ;)
362	tcp_info *i = new tcp_info (this);
363
364	i->ok = false;
365	i->fd = socket (PF_INET, SOCK_STREAM, IPPROTO_TCP);
366
367	if (i->fd >= 0)
368	{
369	fcntl (i->fd, F_SETFL, O_NONBLOCK);
370
371	if (connect (i->fd, si.sav4 (), si.salenv4 ()) >= 0
372	\|\| errno == EINPROGRESS)
373	{
374	tcp_si.insert (tcp_si_map::value_type (si, i));
375	tcp_fd.insert (tcp_fd_map::value_type (i->fd, i));
376	return;
377	}
378
379	delete i;
380	}
381	}
382	else
383	{
384	tcp_info *i = info->second;
385
386	if (i->ok)
387	{
388	setsockopt (i->fd, SOL_IP, IP_TOS, &tos, sizeof tos);
389
390	if (write (i->fd, (void *)pkt, pkt->len + sizeof (u32)) != pkt->len + sizeof (u32))
391	{
392	// error, close socket, forget it and retry immediately
393	tcp_si.erase (info);
394	tcp_fd.erase (i->fd);
395	delete i;
396
397	// tail recursion is... better than goto(?)
398	send_tcpv4_packet (pkt, si, tos);
399	}
400	}
401	}
402
403	#if 0
404	setsockopt (udpv4_fd, SOL_IP, IP_TOS, &tos, sizeof tos);
405	sendto (udpv4_fd, &((*pkt)[0]), pkt->len, 0, si.sav4 (), si.salenv4 ());
406	#endif
407	}
408
409	void
410	vpn::tcpv4_accept (int fd, short revents)
411	{
412	if (revents & (POLLIN \| POLLERR))
413	{
414	struct sockaddr_in sa;	702	struct sockaddr_in sa;
415	socklen_t sa_len = sizeof (sa);	703	socklen_t sa_len = sizeof (sa);
416	int len;	704	int len;
417		705
418	fd = accept (fd, (sockaddr *)&sa, &sa_len);	706	len = recvfrom (w.fd, &((pkt)[0]), MAXSIZE, 0, (sockaddr )&sa, &sa_len);
419		707
420	if (fd >= 0)
421	{
422	fcntl (fd, F_SETFL, O_NONBLOCK);
423
424	sockinfo si(sa, PROT_TCPv4);	708	sockinfo si(sa, PROT_UDPv4);
425	tcp_info *i = new tcp_info (this);
426		709
427	i->fd = fd;	710	if (len > 0)
428	i->ok = true;
429	i->r.start (fd, POLLIN);
430
431	tcp_si.insert (tcp_si_map::value_type (si, i));
432	tcp_fd.insert (tcp_fd_map::value_type (fd, i));
433	}	711	{
434	}	712	pkt->len = len;
435	}
436		713
437	void	714	recv_vpn_packet (pkt, si);
438	vpn::tcpv4_ev (int fd, short revents)
439	{
440	if (revents & (POLLIN \| POLLERR))
441	{
442	tcp_fd_map::iterator info = tcp_fd.find (fd);
443
444	if (info != tcp_fd.end ())
445	{	715	}
446	tcp_info *i = info->second;	716	else
447
448	if (!i->ok) // not yet established
449	{
450	i->ok = true;
451	fcntl (i->fd, F_SETFL, 0);
452	}
453
454	u32 len;
455
456	if (sizeof (len) == read (fd, &len, sizeof (len)))
457	{
458	slog (L_ERR, "%d bytes received\n", len);
459	}
460
461	//tcp_si.erase (i);
462	tcp_fd.erase (fd);
463	delete i;
464	}	717	{
		718	// probably ECONNRESET or somesuch
		719	slog (L_DEBUG, _("%s: fd %d, %s."), (const char *)si, w.fd, strerror (errno));
		720	}
		721
		722	delete pkt;
		723	}
		724	else
465	}	725	{
		726	slog (L_ERR,
		727	_("FATAL: unknown revents %08x in socket, exiting.\n"),
		728	revents);
		729	exit (EXIT_FAILURE);
		730	}
466	}	731	}
467		732
468	#endif	733	inline void
469		734	vpn::tap_ev (ev::io &w, int revents)
470	void
471	vpn::tap_ev (int fd, short revents)
472	{	735	{
473	if (revents & POLLIN)	736	if (revents & EV_READ)
474	{	737	{
475	/* process data */	738	/* process data */
476	tap_packet *pkt;	739	tap_packet *pkt;
477		740
478	pkt = tap->recv ();	741	pkt = tap->recv ();
479		742
		743	if (!pkt)
		744	return;
		745
		746	if (pkt->len > 14)
		747	{
480	int dst = mac2id (pkt->dst);	748	int dst = mac2id (pkt->dst);
481	int src = mac2id (pkt->src);	749	int src = mac2id (pkt->src);
482		750
483	if (src != THISNODE->id)	751	if (src != THISNODE->id)
484	{
485	slog (L_ERR, _("FATAL: tap packet not originating on current node received, terminating."));
486	exit (1);
487	}
488
489	if (dst == THISNODE->id)
490	{
491	slog (L_ERR, _("FATAL: tap packet destined for current node received, terminating."));
492	exit (1);
493	}
494
495	if (dst > conns.size ())
496	slog (L_ERR, _("tap packet for unknown node %d received, ignoring."), dst);
497	else
498	{
499	if (dst)
500	{	752	{
501	// unicast	753	slog (L_ERR, _("FATAL: tap packet not originating on current node received (if-up script not working properly?), exiting."));
502	if (dst != THISNODE->id)	754	exit (EXIT_FAILURE);
503	conns[dst - 1]->inject_data_packet (pkt);
504	}	755	}
		756
		757	if (dst == THISNODE->id)
		758	{
		759	slog (L_ERR, _("FATAL: tap packet destined for current node received, exiting."));
		760	exit (EXIT_FAILURE);
		761	}
		762
		763	if (dst > conns.size ())
		764	slog (L_ERR, _("tap packet for unknown node %d received, ignoring."), dst);
505	else	765	else
506	{
507	// broadcast, first check router, then self, then english
508	connection *router = find_router ();
509
510	if (router)
511	router->inject_data_packet (pkt, true);	766	inject_data_packet (pkt, dst);
512	else
513	for (conns_vector::iterator c = conns.begin (); c != conns.end (); ++c)
514	if ((*c)->conf != THISNODE)
515	(*c)->inject_data_packet (pkt);
516	}
517	}	767	}
518		768
519	delete pkt;	769	delete pkt;
520	}
521	else if (revents & (POLLHUP \| POLLERR))
522	{
523	slog (L_ERR, _("FATAL: POLLHUP or POLLERR on network device fd, terminating."));
524	exit (1);
525	}	770	}
526	else	771	else
527	abort ();	772	abort ();
528	}	773	}
529		774
530	void	775	inline void
531	vpn::event_cb (tstamp &ts)	776	vpn::event_cb (ev::timer &w, int)
532	{	777	{
533	if (events)	778	if (events)
534	{	779	{
535	if (events & EVENT_SHUTDOWN)	780	if (events & EVENT_SHUTDOWN)
536	{	781	{
537	slog (L_INFO, _("preparing shutdown..."));	782	slog (L_INFO, _("preparing shutdown..."));
538		783
539	shutdown_all ();	784	shutdown_all ();
540
541	remove_pid (pidfilename);	785	remove_pid (conf.pidfilename);
542
543	slog (L_INFO, _("terminating"));	786	slog (L_INFO, _("exiting."));
544		787	exit (EXIT_SUCCESS);
545	exit (0);
546	}	788	}
547		789
548	if (events & EVENT_RECONNECT)	790	if (events & EVENT_RECONNECT)
549	{	791	{
550	slog (L_INFO, _("forced reconnect"));	792	slog (L_INFO, _("forced reconnect."));
551		793
552	reconnect_all ();	794	reconnect_all ();
553	}	795	}
554		796
555	events = 0;	797	events = 0;
556	}	798	}
557
558	ts = TSTAMP_CANCEL;
559	}	799	}
560		800
561	void	801	void
562	vpn::shutdown_all ()	802	vpn::shutdown_all ()
563	{	803	{
573		813
574	conns.clear ();	814	conns.clear ();
575		815
576	connection_init ();	816	connection_init ();
577		817
578	for (configuration::node_vector::iterator i = conf.nodes.begin ();	818	for (configuration::node_vector::iterator i = conf.nodes.begin (); i != conf.nodes.end (); ++i)
579	i != conf.nodes.end (); ++i)	819	conns.push_back (new connection (this, *i));
580	{
581	connection *conn = new connection (this);
582		820
583	conn->conf = *i;	821	for (conns_vector::iterator c = conns.begin (); c != conns.end (); ++c)
584	conns.push_back (conn);
585
586	conn->establish_connection ();	822	(*c)->establish_connection ();
587	}
588	}	823	}
589		824
590	connection *vpn::find_router ()	825	bool
		826	vpn::can_direct (conf_node src, conf_node dst) const
591	{	827	{
592	u32 prio = 0;	828	return src != dst
		829	&& src->may_direct (dst)
		830	&& dst->may_direct (src)
		831	&& (((src->protocols & dst->protocols) && src->connectmode == conf_node::C_ALWAYS)
		832	\|\| (src->protocols & dst->connectable_protocols ()));
		833	}
		834
		835	// only works for indirect and routed connections: find a router
		836	// from THISNODE to dst
		837	connection *
		838	vpn::find_router_for (const connection *dst)
		839	{
593	connection *router = 0;	840	connection *router = 0;
594		841
		842	// first try to find a router with a direct connection, route there
		843	// regardless of any other considerations.
		844	{
		845	u32 prio = 1;
		846
		847	for (conns_vector::iterator i = conns.begin (); i != conns.end (); ++i)
		848	{
		849	connection c = i;
		850
		851	if (c->conf->routerprio > prio
		852	&& c->conf != THISNODE
		853	&& can_direct (c->conf, dst->conf)
		854	&& c->ictx && c->octx)
		855	{
		856	prio = c->conf->routerprio;
		857	router = c;
		858	}
		859	}
		860	}
		861
		862	if (router)
		863	return router;
		864
		865	// second try find the router with the highest priority, higher than ours
		866	{
		867	u32 prio = THISNODE->routerprio ? THISNODE->routerprio : 1;
		868
		869	for (conns_vector::iterator i = conns.begin (); i != conns.end (); ++i)
		870	{
		871	connection c = i;
		872
		873	if (c->conf->routerprio > prio
		874	&& c != dst
		875	&& c->conf != THISNODE
		876	&& c->ictx && c->octx)
		877	{
		878	prio = c->conf->routerprio;
		879	router = c;
		880	}
		881	}
		882	}
		883
		884	return router;
		885	}
		886
		887	void
		888	vpn::connection_established (connection *c)
		889	{
595	for (conns_vector::iterator i = conns.begin (); i != conns.end (); ++i)	890	for (conns_vector::iterator i = conns.begin (); i != conns.end (); ++i)
596	{	891	{
597	connection c = i;	892	connection o = i;
598		893
599	if (c->conf->routerprio > prio	894	if (!o->is_direct
600	&& c->connectmode == conf_node::C_ALWAYS	895	&& o->si.valid ()
601	&& c->conf != THISNODE	896	&& c->si != o->si
602	&& c->ictx && c->octx)	897	&& c == find_router_for (o))
603	{
604	prio = c->conf->routerprio;
605	router = c;
606	}	898	{
		899	slog (L_DEBUG, _("%s: can now route packets via %s, re-keying connection."),
		900	o->conf->nodename, c->conf->nodename);
		901	o->rekey ();
		902	}
607	}	903	}
608
609	return router;
610	}	904	}
611		905
612	void vpn::connect_request (int id)	906	void
		907	vpn::send_connect_request (connection *c)
613	{	908	{
614	connection *c = find_router ();	909	connection *r = find_router_for (c);
615		910
616	if (c)	911	if (r)
		912	{
		913	slog (L_TRACE, _("%s: no address known, sending mediated connection request via %s."),
		914	c->conf->nodename, r->conf->nodename);
617	c->connect_request (id);	915	r->send_connect_request (c->conf->id);
618	//else // does not work, because all others must connect to the same router	916	}
619	// // no router found, aggressively connect to all routers	917	else
620	// for (conns_vector::iterator i = conns.begin (); i != conns.end (); ++i)	918	slog (L_DEBUG, _("%s: no way to connect and no router found: unable to connect at this time."),
621	// if ((*i)->conf->routerprio)	919	c->conf->nodename);
622	// (*i)->establish_connection ();
623	}	920	}
624		921
625	void	922	void
626	connection::dump_status ()	923	connection::dump_status ()
627	{	924	{
628	slog (L_NOTICE, _("node %s (id %d)"), conf->nodename, conf->id);	925	slog (L_NOTICE, _("node %s (id %d)"), conf->nodename, conf->id);
629	slog (L_NOTICE, _(" connectmode %d (%d) / sockaddr %s / minor %d"),	926	slog (L_NOTICE, _(" connectmode %d (%d) / sockaddr %s / minor %d"),
630	connectmode, conf->connectmode, (const char *)si, (int)prot_minor);	927	connectmode, conf->connectmode, (const char *)si, (int)prot_minor);
631	slog (L_NOTICE, _(" ictx/octx %08lx/%08lx / oseqno %d / retry_cnt %d"),	928	slog (L_NOTICE, _(" ictx/octx %08lx/%08lx / oseqno %d / retry_cnt %d"),
632	(long)ictx, (long)octx, (int)oseqno, (int)retry_cnt);	929	(long)ictx, (long)octx, (int)oseqno, (int)retry_cnt);
633	slog (L_NOTICE, _(" establish_conn %ld / rekey %ld / keepalive %ld"),
634	(long)(establish_connection.at), (long)(rekey.at), (long)(keepalive.at));
635	}	930	}
636		931
637	void	932	void
638	vpn::dump_status ()	933	vpn::dump_status ()
639	{	934	{
640	slog (L_NOTICE, _("BEGIN status dump (%ld)"), (long)NOW);	935	slog (L_NOTICE, _("BEGIN status dump (%ld)"), (long)ev_now ());
641		936
642	for (conns_vector::iterator c = conns.begin (); c != conns.end (); ++c)	937	for (conns_vector::iterator c = conns.begin (); c != conns.end (); ++c)
643	(*c)->dump_status ();	938	(*c)->dump_status ();
644		939
645	slog (L_NOTICE, _("END status dump"));	940	slog (L_NOTICE, _("END status dump"));
646	}	941	}
647		942
648	vpn::vpn (void)	943	vpn::vpn (void)
649	: event(this, &vpn::event_cb)	944	{
		945	event .set<vpn, &vpn::event_cb > (this);
650	, udpv4_ev_watcher(this, &vpn::udpv4_ev)	946	udpv4_ev_watcher .set<vpn, &vpn::udpv4_ev > (this);
651	, ipv4_ev_watcher (this, &vpn::ipv4_ev)	947	ipv4_ev_watcher .set<vpn, &vpn::ipv4_ev > (this);
652	, tap_ev_watcher (this, &vpn::tap_ev)
653	#if ENABLE_TCP	948	#if ENABLE_TCP
654	, tcpv4_accept_watcher(this, &vpn::tcpv4_accept)	949	tcpv4_ev_watcher .set<vpn, &vpn::tcpv4_ev > (this);
655	#endif	950	#endif
656	{	951	#if ENABLE_ICMP
		952	icmpv4_ev_watcher.set<vpn, &vpn::icmpv4_ev> (this);
		953	#endif
		954	#if ENABLE_DNS
		955	dnsv4_ev_watcher .set<vpn, &vpn::dnsv4_ev > (this);
		956	#endif
		957	tap_ev_watcher .set<vpn, &vpn::tap_ev > (this);
657	}	958	}
658		959
659	vpn::~vpn ()	960	vpn::~vpn ()
660	{	961	{
661	}	962	}

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Comparing gvpe/src/vpn.C (file contents): Revision 1.2 by pcg, Wed Apr 2 05:15:00 2003 UTC vs. Revision 1.66 by root, Thu Jul 18 13:35:16 2013 UTC

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Comparing gvpe/src/vpn.C (file contents):
Revision 1.2 by pcg, Wed Apr 2 05:15:00 2003 UTC vs.
Revision 1.66 by root, Thu Jul 18 13:35:16 2013 UTC