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

Comparing gvpe/src/vpn.C (file contents):
Revision 1.29 by pcg, Fri Mar 4 04:52:38 2005 UTC vs.
Revision 1.48 by pcg, Sat Aug 9 18:30:55 2008 UTC

…		…
1	/*	1	/*
2	vpn.C -- handle the protocol, encryption, handshaking etc.	2	vpn.C -- handle the protocol, encryption, handshaking etc.
3	Copyright (C) 2003-2005 Marc Lehmann <gvpe@schmorp.de>	3	Copyright (C) 2003-2008 Marc Lehmann <gvpe@schmorp.de>
4		4
5	This file is part of GVPE.	5	This file is part of GVPE.
6		6
7	GVPE is free software; you can redistribute it and/or modify	7	GVPE is free software; you can redistribute it and/or modify it
8	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
9	the Free Software Foundation; either version 2 of the License, or	9	Free Software Foundation; either version 3 of the License, or (at your
10	(at your option) any later version.	10	option) any later version.
11		11
12	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
13	but WITHOUT ANY WARRANTY; without even the implied warranty of	13	WITHOUT ANY WARRANTY; without even the implied warranty of
14	MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the	14	MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General
15	GNU General Public License for more details.	15	Public License for more details.
16		16
17	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
18	along with gvpe; if not, write to the Free Software	18	with this program; if not, see <http://www.gnu.org/licenses/>.
19	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.
20	*/	30	*/
21		31
22	#include "config.h"	32	#include "config.h"
23		33
24	#include <list>	34	#include <list>
46		56
47	vpn network; // THE vpn (bad design...)	57	vpn network; // THE vpn (bad design...)
48		58
49	/////////////////////////////////////////////////////////////////////////////	59	/////////////////////////////////////////////////////////////////////////////
50		60
51	const char *vpn::script_if_up ()	61	static void inline
		62	set_tos (int fd, int &tos_prev, int tos)
		63	{
		64	#if defined(SOL_IP) && defined(IP_TOS)
		65	if (tos_prev == tos)
		66	return;
		67
		68	tos_prev = tos;
		69	setsockopt (fd, SOL_IP, IP_TOS, &tos, sizeof tos);
		70	#endif
		71	}
		72
		73	void
		74	vpn::script_init_env ()
52	{	75	{
53	// the tunnel device mtu should be the physical mtu - overhead	76	// the tunnel device mtu should be the physical mtu - overhead
54	// the tricky part is rounding to the cipher key blocksize	77	// the tricky part is rounding to the cipher key blocksize
55	int mtu = conf.mtu - ETH_OVERHEAD - VPE_OVERHEAD - MAX_OVERHEAD;	78	int mtu = conf.mtu - ETH_OVERHEAD - VPE_OVERHEAD - MAX_OVERHEAD;
56	mtu += ETH_OVERHEAD - 6 - 6; // now we have the data portion	79	mtu += ETH_OVERHEAD - 6 - 6; // now we have the data portion
57	mtu -= mtu % EVP_CIPHER_block_size (CIPHER); // round	80	mtu -= mtu % EVP_CIPHER_block_size (CIPHER); // round
58	mtu -= ETH_OVERHEAD - 6 - 6; // and get interface mtu again	81	mtu -= ETH_OVERHEAD - 6 - 6; // and get interface mtu again
59		82
60	char *env;	83	char *env;
61	asprintf (&env, "CONFBASE=%s", confbase); putenv (env);	84	asprintf (&env, "CONFBASE=%s", confbase); putenv (env);
62	asprintf (&env, "NODENAME=%s", THISNODE->nodename); putenv (env);
63	asprintf (&env, "NODEID=%d", THISNODE->id); putenv (env);
64	asprintf (&env, "IFNAME=%s", tap->interface ()); putenv (env);	85	asprintf (&env, "IFNAME=%s", tap->interface ()); putenv (env);
65	asprintf (&env, "IFTYPE=%s", IFTYPE); putenv (env);	86	asprintf (&env, "IFTYPE=%s", IFTYPE); putenv (env);
66	asprintf (&env, "IFSUBTYPE=%s", IFSUBTYPE); putenv (env);	87	asprintf (&env, "IFSUBTYPE=%s", IFSUBTYPE); putenv (env);
67	asprintf (&env, "MTU=%d", mtu); putenv (env);	88	asprintf (&env, "MTU=%d", mtu); putenv (env);
68	asprintf (&env, "MAC=%02x:%02x:%02x:%02x:%02x:%02x",	89	asprintf (&env, "NODES=%d", conns.size ()); putenv (env);
69	0xfe, 0xfd, 0x80, 0x00, THISNODE->id >> 8,	90	asprintf (&env, "NODEID=%d", THISNODE->id); putenv (env);
70	THISNODE->id & 0xff);
71	putenv (env);
72		91
		92	conns [THISNODE->id - 1]->script_init_env ("");
		93
		94	for (conns_vector::iterator c = conns.begin (); c != conns.end (); ++c)
		95	{
		96	char ext[16];
		97	snprintf (ext, 16, "_%d", (*c)->conf->id);
		98	(*c)->script_init_env (ext);
		99	}
		100	}
		101
		102	inline const char *
		103	vpn::script_if_init ()
		104	{
		105	script_init_env ();
		106
		107	return tap->if_up ();
		108	}
		109
		110	inline const char *
		111	vpn::script_if_up ()
		112	{
		113	script_init_env ();
		114
		115	char *filename;
		116	asprintf (&filename,
		117	"%s/%s",
		118	confbase,
73	return ::conf.script_if_up ? ::conf.script_if_up : "if-up";	119	::conf.script_if_up ? ::conf.script_if_up : "if-up");
		120
		121	return filename;
74	}	122	}
75		123
76	int	124	int
77	vpn::setup ()	125	vpn::setup ()
78	{	126	{
		127	ipv4_tos = -1;
79	ipv4_fd = -1;	128	ipv4_fd = -1;
80		129
81	if (THISNODE->protocols & PROT_IPv4 && ::conf.ip_proto)	130	if (THISNODE->protocols & PROT_IPv4 && ::conf.ip_proto)
82	{	131	{
83	ipv4_fd = socket (PF_INET, SOCK_RAW, ::conf.ip_proto);	132	ipv4_fd = socket (PF_INET, SOCK_RAW, ::conf.ip_proto);
84		133
85	if (ipv4_fd < 0)	134	if (ipv4_fd < 0)
86	return -1;	135	return -1;
87		136
88	fcntl (ipv4_fd, F_SETFL, O_NONBLOCK);	137	fcntl (ipv4_fd, F_SETFL, O_NONBLOCK);
		138	fcntl (ipv4_fd, F_SETFD, FD_CLOEXEC);
89		139
90	#if defined(SOL_IP) && defined(IP_MTU_DISCOVER)	140	#if defined(SOL_IP) && defined(IP_MTU_DISCOVER)
91	// this I really consider a linux bug. I am neither connected	141	// this I really consider a linux bug. I am neither connected
92	// nor do I fragment myself. Linux still sets DF and doesn't	142	// nor do I fragment myself. Linux still sets DF and doesn't
93	// fragment for me sometimes.	143	// fragment for me sometimes.
…		…
103	{	153	{
104	slog (L_ERR, _("can't bind ipv4 socket on %s: %s"), (const char *)si, strerror (errno));	154	slog (L_ERR, _("can't bind ipv4 socket on %s: %s"), (const char *)si, strerror (errno));
105	exit (EXIT_FAILURE);	155	exit (EXIT_FAILURE);
106	}	156	}
107		157
108	ipv4_ev_watcher.start (ipv4_fd, EVENT_READ);	158	ipv4_ev_watcher.start (ipv4_fd, EV_READ);
109	}	159	}
110		160
		161	udpv4_tos = -1;
111	udpv4_fd = -1;	162	udpv4_fd = -1;
112		163
113	if (THISNODE->protocols & PROT_UDPv4 && THISNODE->udp_port)	164	if (THISNODE->protocols & PROT_UDPv4 && THISNODE->udp_port)
114	{	165	{
115	udpv4_fd = socket (PF_INET, SOCK_DGRAM, IPPROTO_UDP);	166	udpv4_fd = socket (PF_INET, SOCK_DGRAM, IPPROTO_UDP);
116		167
117	if (udpv4_fd < 0)	168	if (udpv4_fd < 0)
118	return -1;	169	return -1;
119		170
120	fcntl (udpv4_fd, F_SETFL, O_NONBLOCK);	171	fcntl (udpv4_fd, F_SETFL, O_NONBLOCK);
		172	fcntl (udpv4_fd, F_SETFD, FD_CLOEXEC);
121		173
122	// standard daemon practise...	174	// standard daemon practise...
123	{	175	{
124	int oval = 1;	176	int oval = 1;
125	setsockopt (udpv4_fd, SOL_SOCKET, SO_REUSEADDR, &oval, sizeof oval);	177	setsockopt (udpv4_fd, SOL_SOCKET, SO_REUSEADDR, &oval, sizeof oval);
…		…
141	{	193	{
142	slog (L_ERR, _("can't bind udpv4 on %s: %s"), (const char *)si, strerror (errno));	194	slog (L_ERR, _("can't bind udpv4 on %s: %s"), (const char *)si, strerror (errno));
143	exit (EXIT_FAILURE);	195	exit (EXIT_FAILURE);
144	}	196	}
145		197
146	udpv4_ev_watcher.start (udpv4_fd, EVENT_READ);	198	udpv4_ev_watcher.start (udpv4_fd, EV_READ);
147	}	199	}
148		200
		201	icmpv4_tos = -1;
149	icmpv4_fd = -1;	202	icmpv4_fd = -1;
150		203
151	#if ENABLE_ICMP	204	#if ENABLE_ICMP
152	if (THISNODE->protocols & PROT_ICMPv4)	205	if (THISNODE->protocols & PROT_ICMPv4)
153	{	206	{
154	icmpv4_fd = socket (PF_INET, SOCK_RAW, IPPROTO_ICMP);	207	icmpv4_fd = socket (PF_INET, SOCK_RAW, IPPROTO_ICMP);
155		208
156	if (icmpv4_fd < 0)	209	if (icmpv4_fd < 0)
157	return -1;	210	return -1;
158		211
159	fcntl (icmpv4_fd, F_SETFL, O_NONBLOCK);	212	fcntl (icmpv4_fd, F_SETFL, O_NONBLOCK);
		213	fcntl (icmpv4_fd, F_SETFD, FD_CLOEXEC);
160		214
161	#ifdef ICMP_FILTER	215	#ifdef ICMP_FILTER
162	{	216	{
163	icmp_filter oval;	217	icmp_filter oval;
164	oval.data = 0xffffffff;	218	oval.data = 0xffffffff;
…		…
173	// this I really consider a linux bug. I am neither connected	227	// this I really consider a linux bug. I am neither connected
174	// nor do I fragment myself. Linux still sets DF and doesn't	228	// nor do I fragment myself. Linux still sets DF and doesn't
175	// fragment for me sometimes.	229	// fragment for me sometimes.
176	{	230	{
177	int oval = IP_PMTUDISC_DONT;	231	int oval = IP_PMTUDISC_DONT;
178	setsockopt (udpv4_fd, SOL_IP, IP_MTU_DISCOVER, &oval, sizeof oval);	232	setsockopt (icmpv4_fd, SOL_IP, IP_MTU_DISCOVER, &oval, sizeof oval);
179	}	233	}
180	#endif	234	#endif
181		235
182	sockinfo si (THISNODE, PROT_ICMPv4);	236	sockinfo si (THISNODE, PROT_ICMPv4);
183		237
…		…
185	{	239	{
186	slog (L_ERR, _("can't bind icmpv4 on %s: %s"), (const char *)si, strerror (errno));	240	slog (L_ERR, _("can't bind icmpv4 on %s: %s"), (const char *)si, strerror (errno));
187	exit (EXIT_FAILURE);	241	exit (EXIT_FAILURE);
188	}	242	}
189		243
190	icmpv4_ev_watcher.start (icmpv4_fd, EVENT_READ);	244	icmpv4_ev_watcher.start (icmpv4_fd, EV_READ);
191	}	245	}
192	#endif	246	#endif
193		247
194	tcpv4_fd = -1;	248	tcpv4_fd = -1;
195		249
…		…
200		254
201	if (tcpv4_fd < 0)	255	if (tcpv4_fd < 0)
202	return -1;	256	return -1;
203		257
204	fcntl (tcpv4_fd, F_SETFL, O_NONBLOCK);	258	fcntl (tcpv4_fd, F_SETFL, O_NONBLOCK);
		259	fcntl (tcpv4_fd, F_SETFD, FD_CLOEXEC);
205		260
206	// standard daemon practise...	261	// standard daemon practise...
207	{	262	{
208	int oval = 1;	263	int oval = 1;
209	setsockopt (tcpv4_fd, SOL_SOCKET, SO_REUSEADDR, &oval, sizeof oval);	264	setsockopt (tcpv4_fd, SOL_SOCKET, SO_REUSEADDR, &oval, sizeof oval);
…		…
221	{	276	{
222	slog (L_ERR, _("can't listen tcpv4 on %s: %s"), (const char *)si, strerror (errno));	277	slog (L_ERR, _("can't listen tcpv4 on %s: %s"), (const char *)si, strerror (errno));
223	exit (EXIT_FAILURE);	278	exit (EXIT_FAILURE);
224	}	279	}
225		280
226	tcpv4_ev_watcher.start (tcpv4_fd, EVENT_READ);	281	tcpv4_ev_watcher.start (tcpv4_fd, EV_READ);
227	}	282	}
228	#endif	283	#endif
		284
		285	dnsv4_tos = -1;
		286	dnsv4_fd = -1;
229		287
230	#if ENABLE_DNS	288	#if ENABLE_DNS
231	if (THISNODE->protocols & PROT_DNSv4)	289	if (THISNODE->protocols & PROT_DNSv4)
232	{	290	{
233	dns_forwarder.set (::conf.dns_forw_host, ::conf.dns_forw_port, PROT_DNSv4);	291	dns_forwarder.set (::conf.dns_forw_host, ::conf.dns_forw_port, PROT_DNSv4);
234		292
235	dnsv4_fd = socket (PF_INET, SOCK_DGRAM, IPPROTO_UDP);	293	dnsv4_fd = socket (PF_INET, SOCK_DGRAM, IPPROTO_UDP);
236		294
237	if (dnsv4_fd < 0)	295	if (dnsv4_fd < 0)
238	return -1;	296	return -1;
		297
		298	fcntl (dnsv4_fd, F_SETFL, O_NONBLOCK);
		299	fcntl (dnsv4_fd, F_SETFD, FD_CLOEXEC);
		300
		301	# if defined(SOL_IP) && defined(IP_MTU_DISCOVER)
		302	// this I really consider a linux bug. I am neither connected
		303	// nor do I fragment myself. Linux still sets DF and doesn't
		304	// fragment for me sometimes.
		305	{
		306	int oval = IP_PMTUDISC_DONT;
		307	setsockopt (dnsv4_fd, SOL_IP, IP_MTU_DISCOVER, &oval, sizeof oval);
		308	}
		309	# endif
239		310
240	// standard daemon practise...	311	// standard daemon practise...
241	{	312	{
242	int oval = 1;	313	int oval = 1;
243	setsockopt (tcpv4_fd, SOL_SOCKET, SO_REUSEADDR, &oval, sizeof oval);	314	setsockopt (dnsv4_fd, SOL_SOCKET, SO_REUSEADDR, &oval, sizeof oval);
244	}	315	}
245		316
246	sockinfo si (THISNODE, PROT_DNSv4);	317	sockinfo si (THISNODE->dns_hostname,
		318	THISNODE->dns_hostname ? THISNODE->dns_port : 0,
		319	PROT_DNSv4);
247		320
248	if (bind (dnsv4_fd, si.sav4 (), si.salenv4 ()))	321	if (bind (dnsv4_fd, si.sav4 (), si.salenv4 ()))
249	{	322	{
250	slog (L_ERR, _("can't bind dnsv4 on %s: %s"), (const char *)si, strerror (errno));	323	slog (L_ERR, _("can't bind dnsv4 on %s: %s"), (const char *)si, strerror (errno));
251	exit (EXIT_FAILURE);	324	exit (EXIT_FAILURE);
252	}	325	}
253		326
254	dnsv4_ev_watcher.start (dnsv4_fd, EVENT_READ);	327	dnsv4_ev_watcher.start (dnsv4_fd, EV_READ);
255	}	328	}
256	#endif	329	#endif
		330
		331	/////////////////////////////////////////////////////////////////////////////
		332
		333	reconnect_all ();
		334
		335	/////////////////////////////////////////////////////////////////////////////
257		336
258	tap = new tap_device ();	337	tap = new tap_device ();
259	if (!tap) //D this, of course, never catches	338	if (!tap) //D this, of course, never catches
260	{	339	{
261	slog (L_ERR, _("cannot create network interface '%s'"), conf.ifname);	340	slog (L_ERR, _("cannot create network interface '%s'"), conf.ifname);
262	exit (EXIT_FAILURE);	341	exit (EXIT_FAILURE);
263	}	342	}
264		343
265	run_script (run_script_cb (this, &vpn::script_if_up), true);	344	fcntl (tap->fd, F_SETFD, FD_CLOEXEC);
266		345
		346	run_script_cb cb;
		347	cb.set<vpn, &vpn::script_if_init> (this);
		348
		349	if (tap->if_up () &&
		350	!run_script (cb, true))
		351	{
		352	slog (L_ERR, _("interface initialization command '%s' failed, exiting."),
		353	tap->if_up ());
		354	exit (EXIT_FAILURE);
		355	}
		356
		357	cb.set<vpn, &vpn::script_if_up> (this);
		358	if (!run_script (cb, true))
		359	{
		360	slog (L_ERR, _("if-up command execution failed, exiting."));
		361	exit (EXIT_FAILURE);
		362	}
		363
267	tap_ev_watcher.start (tap->fd, EVENT_READ);	364	tap_ev_watcher.start (tap->fd, EV_READ);
268
269	reconnect_all ();
270		365
271	return 0;	366	return 0;
272	}	367	}
273		368
274	bool	369	bool
275	vpn::send_ipv4_packet (vpn_packet *pkt, const sockinfo &si, int tos)	370	vpn::send_ipv4_packet (vpn_packet *pkt, const sockinfo &si, int tos)
276	{	371	{
277	#if defined(SOL_IP) && defined(IP_TOS)	372	set_tos (ipv4_fd, ipv4_tos, tos);
278	setsockopt (ipv4_fd, SOL_IP, IP_TOS, &tos, sizeof tos);
279	#endif
280	sendto (ipv4_fd, &((*pkt)[0]), pkt->len, 0, si.sav4 (), si.salenv4 ());	373	sendto (ipv4_fd, &((*pkt)[0]), pkt->len, 0, si.sav4 (), si.salenv4 ());
281		374
282	return true;	375	return true;
283	}	376	}
284		377
…		…
307		400
308	#if ENABLE_ICMP	401	#if ENABLE_ICMP
309	bool	402	bool
310	vpn::send_icmpv4_packet (vpn_packet *pkt, const sockinfo &si, int tos)	403	vpn::send_icmpv4_packet (vpn_packet *pkt, const sockinfo &si, int tos)
311	{	404	{
312	#if defined(SOL_IP) && defined(IP_TOS)
313	setsockopt (icmpv4_fd, SOL_IP, IP_TOS, &tos, sizeof tos);
314	#endif
315
316	pkt->unshift_hdr (4);	405	pkt->unshift_hdr (4);
317		406
318	icmp_header hdr = (icmp_header )&((*pkt)[0]);	407	icmp_header hdr = (icmp_header )&((*pkt)[0]);
319	hdr->type = ::conf.icmp_type;	408	hdr->type = ::conf.icmp_type;
320	hdr->code = 255;	409	hdr->code = 255;
321	hdr->checksum = 0;	410	hdr->checksum = 0;
322	hdr->checksum = ipv4_checksum ((u16 *)hdr, pkt->len);	411	hdr->checksum = ipv4_checksum ((u16 *)hdr, pkt->len);
323		412
		413	set_tos (icmpv4_fd, icmpv4_tos, tos);
324	sendto (icmpv4_fd, &((*pkt)[0]), pkt->len, 0, si.sav4 (), si.salenv4 ());	414	sendto (icmpv4_fd, &((*pkt)[0]), pkt->len, 0, si.sav4 (), si.salenv4 ());
325		415
326	return true;	416	return true;
327	}	417	}
328	#endif	418	#endif
329		419
330	bool	420	bool
331	vpn::send_udpv4_packet (vpn_packet *pkt, const sockinfo &si, int tos)	421	vpn::send_udpv4_packet (vpn_packet *pkt, const sockinfo &si, int tos)
332	{	422	{
333	#if defined(SOL_IP) && defined(IP_TOS)	423	set_tos (udpv4_fd, udpv4_tos, tos);
334	setsockopt (udpv4_fd, SOL_IP, IP_TOS, &tos, sizeof tos);
335	#endif
336	sendto (udpv4_fd, &((*pkt)[0]), pkt->len, 0, si.sav4 (), si.salenv4 ());	424	sendto (udpv4_fd, &((*pkt)[0]), pkt->len, 0, si.sav4 (), si.salenv4 ());
337		425
338	return true;	426	return true;
339	}	427	}
340		428
…		…
351	{	439	{
352	// broadcast, this is ugly, but due to the security policy	440	// broadcast, this is ugly, but due to the security policy
353	// we have to connect to all hosts...	441	// we have to connect to all hosts...
354	for (conns_vector::iterator c = conns.begin (); c != conns.end (); ++c)	442	for (conns_vector::iterator c = conns.begin (); c != conns.end (); ++c)
355	if ((*c)->conf != THISNODE)	443	if ((*c)->conf != THISNODE)
356	(*c)->inject_data_packet (pkt, true);	444	(*c)->inject_data_packet (pkt);
357	}	445	}
358	}	446	}
359		447
360	void	448	void
361	vpn::recv_vpn_packet (vpn_packet *pkt, const sockinfo &rsi)	449	vpn::recv_vpn_packet (vpn_packet *pkt, const sockinfo &rsi)
…		…
395	else	483	else
396	c->recv_vpn_packet (pkt, rsi);	484	c->recv_vpn_packet (pkt, rsi);
397	}	485	}
398	}	486	}
399		487
400	void	488	bool
		489	vpn::send_vpn_packet (vpn_packet *pkt, const sockinfo &si, int tos)
		490	{
		491	switch (si.prot)
		492	{
		493	case PROT_IPv4:
		494	return send_ipv4_packet (pkt, si, tos);
		495
		496	case PROT_UDPv4:
		497	return send_udpv4_packet (pkt, si, tos);
		498
		499	#if ENABLE_TCP
		500	case PROT_TCPv4:
		501	return send_tcpv4_packet (pkt, si, tos);
		502	#endif
		503	#if ENABLE_ICMP
		504	case PROT_ICMPv4:
		505	return send_icmpv4_packet (pkt, si, tos);
		506	#endif
		507	#if ENABLE_DNS
		508	case PROT_DNSv4:
		509	return send_dnsv4_packet (pkt, si, tos);
		510	#endif
		511	default:
		512	slog (L_CRIT, _("%s: FATAL: trying to send packet with unsupported protocol"), (const char *)si);
		513	}
		514
		515	return false;
		516	}
		517
		518	inline void
401	vpn::ipv4_ev (io_watcher &w, short revents)	519	vpn::ipv4_ev (ev::io &w, int revents)
402	{	520	{
403	if (revents & EVENT_READ)	521	if (revents & EV_READ)
404	{	522	{
405	vpn_packet *pkt = new vpn_packet;	523	vpn_packet *pkt = new vpn_packet;
406	struct sockaddr_in sa;	524	struct sockaddr_in sa;
407	socklen_t sa_len = sizeof (sa);	525	socklen_t sa_len = sizeof (sa);
408	int len;	526	int len;
…		…
413		531
414	if (len > 0)	532	if (len > 0)
415	{	533	{
416	pkt->len = len;	534	pkt->len = len;
417		535
418	// raw sockets deliver the ipv4, but don't expect it on sends	536	// raw sockets deliver the ipv4 header, but don't expect it on sends
419	// this is slow, but...
420	pkt->skip_hdr (IP_OVERHEAD);	537	pkt->skip_hdr (IP_OVERHEAD);
421		538
422	recv_vpn_packet (pkt, si);	539	recv_vpn_packet (pkt, si);
423	}	540	}
424	else	541	else
…		…
430	delete pkt;	547	delete pkt;
431	}	548	}
432	else	549	else
433	{	550	{
434	slog (L_ERR,	551	slog (L_ERR,
435	_("FATAL: unknown revents %08x in socket, terminating\n"),	552	_("FATAL: unknown revents %08x in socket, terminating\n"),
436	revents);	553	revents);
437	exit (EXIT_FAILURE);	554	exit (EXIT_FAILURE);
438	}	555	}
439	}	556	}
440		557
441	#if ENABLE_ICMP	558	#if ENABLE_ICMP
442	void	559	inline void
443	vpn::icmpv4_ev (io_watcher &w, short revents)	560	vpn::icmpv4_ev (ev::io &w, int revents)
444	{	561	{
445	if (revents & EVENT_READ)	562	if (revents & EV_READ)
446	{	563	{
447	vpn_packet *pkt = new vpn_packet;	564	vpn_packet *pkt = new vpn_packet;
448	struct sockaddr_in sa;	565	struct sockaddr_in sa;
449	socklen_t sa_len = sizeof (sa);	566	socklen_t sa_len = sizeof (sa);
450	int len;	567	int len;
…		…
485	exit (EXIT_FAILURE);	602	exit (EXIT_FAILURE);
486	}	603	}
487	}	604	}
488	#endif	605	#endif
489		606
490	void	607	inline void
491	vpn::udpv4_ev (io_watcher &w, short revents)	608	vpn::udpv4_ev (ev::io &w, int revents)
492	{	609	{
493	if (revents & EVENT_READ)	610	if (revents & EV_READ)
494	{	611	{
495	vpn_packet *pkt = new vpn_packet;	612	vpn_packet *pkt = new vpn_packet;
496	struct sockaddr_in sa;	613	struct sockaddr_in sa;
497	socklen_t sa_len = sizeof (sa);	614	socklen_t sa_len = sizeof (sa);
498	int len;	615	int len;
…		…
522	revents);	639	revents);
523	exit (EXIT_FAILURE);	640	exit (EXIT_FAILURE);
524	}	641	}
525	}	642	}
526		643
527	void	644	inline void
528	vpn::tap_ev (io_watcher &w, short revents)	645	vpn::tap_ev (ev::io &w, int revents)
529	{	646	{
530	if (revents & EVENT_READ)	647	if (revents & EV_READ)
531	{	648	{
532	/* process data */	649	/* process data */
533	tap_packet *pkt;	650	tap_packet *pkt;
534		651
535	pkt = tap->recv ();	652	pkt = tap->recv ();
…		…
542	int dst = mac2id (pkt->dst);	659	int dst = mac2id (pkt->dst);
543	int src = mac2id (pkt->src);	660	int src = mac2id (pkt->src);
544		661
545	if (src != THISNODE->id)	662	if (src != THISNODE->id)
546	{	663	{
547	slog (L_ERR, _("FATAL: tap packet not originating on current node received, exiting."));	664	slog (L_ERR, _("FATAL: tap packet not originating on current node received (if-up script not working properly?), exiting."));
548	exit (EXIT_FAILURE);	665	exit (EXIT_FAILURE);
549	}	666	}
550		667
551	if (dst == THISNODE->id)	668	if (dst == THISNODE->id)
552	{	669	{
…		…
564	}	681	}
565	else	682	else
566	abort ();	683	abort ();
567	}	684	}
568		685
569	void	686	inline void
570	vpn::event_cb (time_watcher &w)	687	vpn::event_cb (ev::timer &w, int)
571	{	688	{
572	if (events)	689	if (events)
573	{	690	{
574	if (events & EVENT_SHUTDOWN)	691	if (events & EVENT_SHUTDOWN)
575	{	692	{
…		…
659	slog (L_NOTICE, _("node %s (id %d)"), conf->nodename, conf->id);	776	slog (L_NOTICE, _("node %s (id %d)"), conf->nodename, conf->id);
660	slog (L_NOTICE, _(" connectmode %d (%d) / sockaddr %s / minor %d"),	777	slog (L_NOTICE, _(" connectmode %d (%d) / sockaddr %s / minor %d"),
661	connectmode, conf->connectmode, (const char *)si, (int)prot_minor);	778	connectmode, conf->connectmode, (const char *)si, (int)prot_minor);
662	slog (L_NOTICE, _(" ictx/octx %08lx/%08lx / oseqno %d / retry_cnt %d"),	779	slog (L_NOTICE, _(" ictx/octx %08lx/%08lx / oseqno %d / retry_cnt %d"),
663	(long)ictx, (long)octx, (int)oseqno, (int)retry_cnt);	780	(long)ictx, (long)octx, (int)oseqno, (int)retry_cnt);
664	slog (L_NOTICE, _(" establish_conn %ld / rekey %ld / keepalive %ld"),
665	(long)(establish_connection.at), (long)(rekey.at), (long)(keepalive.at));
666	}	781	}
667		782
668	void	783	void
669	vpn::dump_status ()	784	vpn::dump_status ()
670	{	785	{
671	slog (L_NOTICE, _("BEGIN status dump (%ld)"), (long)NOW);	786	slog (L_NOTICE, _("BEGIN status dump (%ld)"), (long)ev_now ());
672		787
673	for (conns_vector::iterator c = conns.begin (); c != conns.end (); ++c)	788	for (conns_vector::iterator c = conns.begin (); c != conns.end (); ++c)
674	(*c)->dump_status ();	789	(*c)->dump_status ();
675		790
676	slog (L_NOTICE, _("END status dump"));	791	slog (L_NOTICE, _("END status dump"));
677	}	792	}
678		793
679	vpn::vpn (void)	794	vpn::vpn (void)
		795	{
680	: event (this, &vpn::event_cb)	796	event .set<vpn, &vpn::event_cb > (this);
681	, udpv4_ev_watcher (this, &vpn::udpv4_ev)	797	udpv4_ev_watcher .set<vpn, &vpn::udpv4_ev > (this);
682	, ipv4_ev_watcher (this, &vpn::ipv4_ev)	798	ipv4_ev_watcher .set<vpn, &vpn::ipv4_ev > (this);
683	#if ENABLE_TCP	799	#if ENABLE_TCP
684	, tcpv4_ev_watcher (this, &vpn::tcpv4_ev)	800	tcpv4_ev_watcher .set<vpn, &vpn::tcpv4_ev > (this);
685	#endif	801	#endif
686	#if ENABLE_ICMP	802	#if ENABLE_ICMP
687	, icmpv4_ev_watcher(this, &vpn::icmpv4_ev)	803	icmpv4_ev_watcher.set<vpn, &vpn::icmpv4_ev> (this);
688	#endif	804	#endif
689	#if ENABLE_DNS	805	#if ENABLE_DNS
690	, dnsv4_ev_watcher (this, &vpn::dnsv4_ev)	806	dnsv4_ev_watcher .set<vpn, &vpn::dnsv4_ev > (this);
691	#endif	807	#endif
692	, tap_ev_watcher (this, &vpn::tap_ev)	808	tap_ev_watcher .set<vpn, &vpn::tap_ev > (this);
693	{
694	}	809	}
695		810
696	vpn::~vpn ()	811	vpn::~vpn ()
697	{	812	{
698	}	813	}

Diff Legend

-–
+Removed lines
-+
+Added lines
-<
+Changed lines
->
+Changed lines

Comparing gvpe/src/vpn.C (file contents): Revision 1.29 by pcg, Fri Mar 4 04:52:38 2005 UTC vs. Revision 1.48 by pcg, Sat Aug 9 18:30:55 2008 UTC

Diff Legend

Comparing gvpe/src/vpn.C (file contents):
Revision 1.29 by pcg, Fri Mar 4 04:52:38 2005 UTC vs.
Revision 1.48 by pcg, Sat Aug 9 18:30:55 2008 UTC