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

Comparing gvpe/src/connection.C (file contents):
Revision 1.65 by pcg, Tue Dec 4 17:17:20 2007 UTC vs.
Revision 1.90 by root, Tue Feb 8 23:11:35 2011 UTC

…		…
1	/*	1	/*
2	connection.C -- manage a single connection	2	connection.C -- manage a single connection
3	Copyright (C) 2003-2005 Marc Lehmann <gvpe@schmorp.de>	3	Copyright (C) 2003-2008,2010 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. 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 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>
		35	#include <queue>
		36	#include <utility>
25		37
26	#include <openssl/rand.h>	38	#include <openssl/rand.h>
27	#include <openssl/evp.h>	39	#include <openssl/evp.h>
28	#include <openssl/rsa.h>	40	#include <openssl/rsa.h>
29	#include <openssl/err.h>	41	#include <openssl/err.h>
38		50
39	#if !HAVE_RAND_PSEUDO_BYTES	51	#if !HAVE_RAND_PSEUDO_BYTES
40	# define RAND_pseudo_bytes RAND_bytes	52	# define RAND_pseudo_bytes RAND_bytes
41	#endif	53	#endif
42		54
43	#define MAGIC "vped\xbd\xc6\xdb\x82" // 8 bytes of magic	55	#define MAGIC_OLD "vped\xbd\xc6\xdb\x82" // 8 bytes of magic (still used in the protocol)
		56	#define MAGIC "gvpe\xbd\xc6\xdb\x82" // 8 bytes of magic (understood but not generated)
44		57
45	#define ULTRA_FAST 1	58	#define ULTRA_FAST 1
46	#define HLOG 15	59	#define HLOG 15
47	#include "lzf/lzf.h"	60	#include "lzf/lzf.h"
48	#include "lzf/lzf_c.c"	61	#include "lzf/lzf_c.c"
49	#include "lzf/lzf_d.c"	62	#include "lzf/lzf_d.c"
		63
		64	//////////////////////////////////////////////////////////////////////////////
		65
		66	static std::queue< std::pair<run_script_cb , const char > > rs_queue;
		67	static ev::child rs_child_ev;
		68
		69	namespace
		70	{
		71	void // c++ requires external linkage here, apparently :(
		72	rs_child_cb (ev::child &w, int revents)
		73	{
		74	w.stop ();
		75
		76	if (rs_queue.empty ())
		77	return;
		78
		79	pid_t pid = run_script (*rs_queue.front ().first, false);
		80	if (pid)
		81	{
		82	w.set (pid);
		83	w.start ();
		84	}
		85	else
		86	slog (L_WARN, rs_queue.front ().second);
		87
		88	delete rs_queue.front ().first;
		89	rs_queue.pop ();
		90	}
		91	};
		92
		93	// despite the fancy name, this is quite a hack
		94	static void
		95	run_script_queued (run_script_cb cb, const char warnmsg)
		96	{
		97	rs_queue.push (std::make_pair (cb, warnmsg));
		98
		99	if (!rs_child_ev.is_active ())
		100	{
		101	rs_child_ev.set<rs_child_cb> ();
		102	rs_child_ev ();
		103	}
		104	}
		105
		106	//////////////////////////////////////////////////////////////////////////////
50		107
51	struct crypto_ctx	108	struct crypto_ctx
52	{	109	{
53	EVP_CIPHER_CTX cctx;	110	EVP_CIPHER_CTX cctx;
54	HMAC_CTX hctx;	111	HMAC_CTX hctx;
…		…
91	rsachallenge chg;	148	rsachallenge chg;
92	};	149	};
93		150
94	struct rsa_cache : list<rsa_entry>	151	struct rsa_cache : list<rsa_entry>
95	{	152	{
96	void cleaner_cb (ev::timer &w, int revents); ev::timer cleaner;	153	inline void cleaner_cb (ev::timer &w, int revents); ev::timer cleaner;
97		154
98	bool find (const rsaid &id, rsachallenge &chg)	155	bool find (const rsaid &id, rsachallenge &chg)
99	{	156	{
100	for (iterator i = begin (); i != end (); ++i)	157	for (iterator i = begin (); i != end (); ++i)
101	{	158	{
…		…
137	cleaner.set (RSA_TTL, RSA_TTL);	194	cleaner.set (RSA_TTL, RSA_TTL);
138	}	195	}
139		196
140	} rsa_cache;	197	} rsa_cache;
141		198
		199	void
142	void rsa_cache::cleaner_cb (ev::timer &w, int revents)	200	rsa_cache::cleaner_cb (ev::timer &w, int revents)
143	{	201	{
144	if (empty ())	202	if (empty ())
145	w.stop ();	203	w.stop ();
146	else	204	else
147	{	205	{
…		…
153	}	211	}
154	}	212	}
155		213
156	//////////////////////////////////////////////////////////////////////////////	214	//////////////////////////////////////////////////////////////////////////////
157		215
158	void pkt_queue::put (net_packet *p)	216	pkt_queue::pkt_queue (double max_ttl, int max_queue)
		217	: max_ttl (max_ttl), max_queue (max_queue)
159	{	218	{
160	if (queue[i])	219	queue = new pkt [max_queue];
161	{
162	delete queue[i];
163	j = (j + 1) % QUEUEDEPTH;
164	}
165		220
166	queue[i] = p;
167
168	i = (i + 1) % QUEUEDEPTH;
169	}
170
171	net_packet *pkt_queue::get ()
172	{
173	net_packet *p = queue[j];
174
175	if (p)
176	{
177	queue[j] = 0;
178	j = (j + 1) % QUEUEDEPTH;
179	}
180
181	return p;
182	}
183
184	pkt_queue::pkt_queue ()
185	{
186	memset (queue, 0, sizeof (queue));
187	i = 0;	221	i = 0;
188	j = 0;	222	j = 0;
		223
		224	expire.set<pkt_queue, &pkt_queue::expire_cb> (this);
189	}	225	}
190		226
191	pkt_queue::~pkt_queue ()	227	pkt_queue::~pkt_queue ()
192	{	228	{
193	for (i = QUEUEDEPTH; --i > 0; )	229	while (net_packet *p = get ())
		230	delete p;
		231
194	delete queue[i];	232	delete [] queue;
		233	}
		234
		235	void
		236	pkt_queue::expire_cb (ev::timer &w, int revents)
		237	{
		238	ev_tstamp expire = ev_now () - max_ttl;
		239
		240	for (;;)
		241	{
		242	if (empty ())
		243	break;
		244
		245	double diff = queue[j].tstamp - expire;
		246
		247	if (diff >= 0.)
		248	{
		249	w.start (diff > 0.5 ? diff : 0.5);
		250	break;
		251	}
		252
		253	delete get ();
		254	}
		255	}
		256
		257	void
		258	pkt_queue::put (net_packet *p)
		259	{
		260	ev_tstamp now = ev_now ();
		261
		262	// start expiry timer
		263	if (empty ())
		264	expire.start (max_ttl);
		265
		266	int ni = i + 1 == max_queue ? 0 : i + 1;
		267
		268	if (ni == j)
		269	delete get ();
		270
		271	queue[i].pkt = p;
		272	queue[i].tstamp = now;
		273
		274	i = ni;
		275	}
		276
		277	net_packet *
		278	pkt_queue::get ()
		279	{
		280	if (empty ())
		281	return 0;
		282
		283	net_packet *p = queue[j].pkt;
		284	queue[j].pkt = 0;
		285
		286	j = j + 1 == max_queue ? 0 : j + 1;
		287
		288	return p;
195	}	289	}
196		290
197	struct net_rateinfo	291	struct net_rateinfo
198	{	292	{
199	u32 host;	293	u32 host;
…		…
213		307
214	bool can (const sockinfo &si) { return can((u32)si.host); }	308	bool can (const sockinfo &si) { return can((u32)si.host); }
215	bool can (u32 host);	309	bool can (u32 host);
216	};	310	};
217		311
218	net_rate_limiter auth_rate_limiter, reset_rate_limiter;	312	static net_rate_limiter auth_rate_limiter, reset_rate_limiter;
219		313
		314	bool
220	bool net_rate_limiter::can (u32 host)	315	net_rate_limiter::can (u32 host)
221	{	316	{
222	iterator i;	317	iterator i;
223		318
224	for (i = begin (); i != end (); )	319	for (i = begin (); i != end (); )
225	if (i->host == host)	320	if (i->host == host)
…		…
272		367
273	/////////////////////////////////////////////////////////////////////////////	368	/////////////////////////////////////////////////////////////////////////////
274		369
275	unsigned char hmac_packet::hmac_digest[EVP_MAX_MD_SIZE];	370	unsigned char hmac_packet::hmac_digest[EVP_MAX_MD_SIZE];
276		371
		372	void
277	void hmac_packet::hmac_gen (crypto_ctx *ctx)	373	hmac_packet::hmac_gen (crypto_ctx *ctx)
278	{	374	{
279	unsigned int xlen;	375	unsigned int xlen;
280		376
281	HMAC_CTX *hctx = &ctx->hctx;	377	HMAC_CTX *hctx = &ctx->hctx;
282		378
…		…
300	hmac_gen (ctx);	396	hmac_gen (ctx);
301		397
302	return !memcmp (hmac, hmac_digest, HMACLENGTH);	398	return !memcmp (hmac, hmac_digest, HMACLENGTH);
303	}	399	}
304		400
		401	void
305	void vpn_packet::set_hdr (ptype type_, unsigned int dst)	402	vpn_packet::set_hdr (ptype type_, unsigned int dst)
306	{	403	{
307	type = type_;	404	type = type_;
308		405
309	int src = THISNODE->id;	406	int src = THISNODE->id;
310		407
…		…
315		412
316	#define MAXVPNDATA (MAX_MTU - 6 - 6)	413	#define MAXVPNDATA (MAX_MTU - 6 - 6)
317	#define DATAHDR (sizeof (u32) + RAND_SIZE)	414	#define DATAHDR (sizeof (u32) + RAND_SIZE)
318		415
319	struct vpndata_packet : vpn_packet	416	struct vpndata_packet : vpn_packet
		417	{
		418	u8 data[MAXVPNDATA + DATAHDR]; // seqno
		419
		420	void setup (connection conn, int dst, u8 d, u32 len, u32 seqno);
		421	tap_packet unpack (connection conn, u32 &seqno);
		422
		423	private:
		424	const u32 data_hdr_size () const
320	{	425	{
321	u8 data[MAXVPNDATA + DATAHDR]; // seqno
322
323	void setup (connection conn, int dst, u8 d, u32 len, u32 seqno);
324	tap_packet unpack (connection conn, u32 &seqno);
325	private:
326
327	const u32 data_hdr_size () const
328	{
329	return sizeof (vpndata_packet) - sizeof (net_packet) - MAXVPNDATA - DATAHDR;	426	return sizeof (vpndata_packet) - sizeof (net_packet) - MAXVPNDATA - DATAHDR;
330	}
331	};	427	}
		428	};
332		429
333	void	430	void
334	vpndata_packet::setup (connection conn, int dst, u8 d, u32 l, u32 seqno)	431	vpndata_packet::setup (connection conn, int dst, u8 d, u32 l, u32 seqno)
335	{	432	{
336	EVP_CIPHER_CTX *cctx = &conn->octx->cctx;	433	EVP_CIPHER_CTX *cctx = &conn->octx->cctx;
…		…
338	ptype type = PT_DATA_UNCOMPRESSED;	435	ptype type = PT_DATA_UNCOMPRESSED;
339		436
340	#if ENABLE_COMPRESSION	437	#if ENABLE_COMPRESSION
341	u8 cdata[MAX_MTU];	438	u8 cdata[MAX_MTU];
342		439
343	if (conn->features & ENABLE_COMPRESSION)	440	if (conn->features & FEATURE_COMPRESSION)
344	{	441	{
345	u32 cl = lzf_compress (d, l, cdata + 2, (l - 2) & ~7);	442	u32 cl = lzf_compress (d, l, cdata + 2, (l - 2) & ~7);
346		443
347	if (cl)	444	if (cl)
348	{	445	{
…		…
475	#endif	572	#endif
476	return f;	573	return f;
477	}	574	}
478	};	575	};
479		576
		577	void
480	void config_packet::setup (ptype type, int dst)	578	config_packet::setup (ptype type, int dst)
481	{	579	{
482	prot_major = PROTOCOL_MAJOR;	580	prot_major = PROTOCOL_MAJOR;
483	prot_minor = PROTOCOL_MINOR;	581	prot_minor = PROTOCOL_MINOR;
484	randsize = RAND_SIZE;	582	randsize = RAND_SIZE;
485	hmaclen = HMACLENGTH;	583	hmaclen = HMACLENGTH;
…		…
493		591
494	len = sizeof (*this) - sizeof (net_packet);	592	len = sizeof (*this) - sizeof (net_packet);
495	set_hdr (type, dst);	593	set_hdr (type, dst);
496	}	594	}
497		595
		596	bool
498	bool config_packet::chk_config () const	597	config_packet::chk_config () const
499	{	598	{
500	if (prot_major != PROTOCOL_MAJOR)	599	if (prot_major != PROTOCOL_MAJOR)
501	slog (L_WARN, _("major version mismatch (remote %d <=> local %d)"), prot_major, PROTOCOL_MAJOR);	600	slog (L_WARN, _("major version mismatch (remote %d <=> local %d)"), prot_major, PROTOCOL_MAJOR);
502	else if (randsize != RAND_SIZE)	601	else if (randsize != RAND_SIZE)
503	slog (L_WARN, _("rand size mismatch (remote %d <=> local %d)"), randsize, RAND_SIZE);	602	slog (L_WARN, _("rand size mismatch (remote %d <=> local %d)"), randsize, RAND_SIZE);
…		…
527	rsaencrdata encr;	626	rsaencrdata encr;
528		627
529	auth_req_packet (int dst, bool initiate_, u8 protocols_)	628	auth_req_packet (int dst, bool initiate_, u8 protocols_)
530	{	629	{
531	config_packet::setup (PT_AUTH_REQ, dst);	630	config_packet::setup (PT_AUTH_REQ, dst);
532	strncpy (magic, MAGIC, 8);	631	strncpy (magic, MAGIC_OLD, 8);
533	initiate = !!initiate_;	632	initiate = !!initiate_;
534	protocols = protocols_;	633	protocols = protocols_;
535		634
536	len = sizeof (*this) - sizeof (net_packet);	635	len = sizeof (*this) - sizeof (net_packet);
537	}	636	}
…		…
586	/////////////////////////////////////////////////////////////////////////////	685	/////////////////////////////////////////////////////////////////////////////
587		686
588	void	687	void
589	connection::connection_established ()	688	connection::connection_established ()
590	{	689	{
591	slog (L_TRACE, _("%s: possible connection establish (ictx %d, octx %d)"), conf->nodename, !!ictx, !!octx);	690	slog (L_NOISE, _("%s: possible connection establish (ictx %d, octx %d)"), conf->nodename, !!ictx, !!octx);
592		691
593	if (ictx && octx)	692	if (ictx && octx)
594	{	693	{
595	connectmode = conf->connectmode;
596
597	// make sure rekeying timeouts are slightly asymmetric	694	// make sure rekeying timeouts are slightly asymmetric
598	ev::tstamp rekey_interval = ::conf.rekey + (conf->id > THISNODE->id ? 10 : 0);	695	ev::tstamp rekey_interval = ::conf.rekey + (conf->id > THISNODE->id ? 10 : 0);
599	rekey.start (rekey_interval, rekey_interval);	696	rekey.start (rekey_interval, rekey_interval);
600	keepalive.start (::conf.keepalive);	697	keepalive.start (::conf.keepalive);
601		698
602	// send queued packets	699	// send queued packets
603	if (ictx && octx)	700	if (ictx && octx)
604	{	701	{
605	while (tap_packet p = (tap_packet )data_queue.get ())	702	while (tap_packet p = (tap_packet )data_queue.get ())
606	{	703	{
607	send_data_packet (p);	704	if (p->len) send_data_packet (p);
608	delete p;	705	delete p;
609	}	706	}
610		707
611	while (vpn_packet p = (vpn_packet )vpn_queue.get ())	708	while (vpn_packet p = (vpn_packet )vpn_queue.get ())
612	{	709	{
613	send_vpn_packet (p, si, IPTOS_RELIABILITY);	710	if (p->len) send_vpn_packet (p, si, IPTOS_RELIABILITY);
614	delete p;	711	delete p;
615	}	712	}
616	}	713	}
		714
		715	vpn->connection_established (this);
617	}	716	}
618	else	717	else
619	{	718	{
620	retry_cnt = 0;	719	retry_cnt = 0;
621	establish_connection.start (5);	720	establish_connection.start (5);
…		…
625	}	724	}
626		725
627	void	726	void
628	connection::reset_si ()	727	connection::reset_si ()
629	{	728	{
		729	if (vpn->can_direct (THISNODE, conf))
630	protocol = best_protocol (THISNODE->protocols & conf->protocols);	730	protocol = best_protocol (THISNODE->protocols & conf->connectable_protocols ());
631		731	else
632	// mask out protocols we cannot establish
633	if (!conf->udp_port) protocol &= ~PROT_UDPv4;
634	if (!conf->tcp_port) protocol &= ~PROT_TCPv4;
635	if (!conf->dns_port) protocol &= ~PROT_DNSv4;
636
637	if (protocol
638	&& (!conf->can_direct (THISNODE)
639	\|\| !THISNODE->can_direct (conf)))
640	{	732	{
641	slog (L_DEBUG, _("%s: direct connection denied"), conf->nodename);	733	slog (L_TRACE, _("%s: direct connection denied by config."), conf->nodename);
642	protocol = 0;	734	protocol = 0;
643	}	735	}
644		736
645	si.set (conf, protocol);	737	si.set (conf, protocol);
		738
		739	is_direct = si.valid ();
646	}	740	}
647		741
648	// ensure sockinfo is valid, forward if necessary	742	// ensure sockinfo is valid, forward if necessary
649	const sockinfo &	743	const sockinfo &
650	connection::forward_si (const sockinfo &si) const	744	connection::forward_si (const sockinfo &si) const
651	{	745	{
652	if (!si.valid ())	746	if (!si.valid ())
653	{	747	{
654	connection *r = vpn->find_router ();	748	connection *r = vpn->find_router_for (this);
655		749
656	if (r)	750	if (r)
657	{	751	{
658	slog (L_DEBUG, _("%s: no common protocol, trying indirectly through %s (%s)"),	752	slog (L_DEBUG, _("%s: no common protocol, trying to route through %s."),
659	conf->nodename, r->conf->nodename, (const char *)r->si);	753	conf->nodename, r->conf->nodename);
660	return r->si;	754	return r->si;
661	}	755	}
662	else	756	else
663	slog (L_DEBUG, _("%s: node unreachable, no common protocol"),	757	slog (L_DEBUG, _("%s: node unreachable, no common protocol or no router available."),
664	conf->nodename);	758	conf->nodename);
665	}	759	}
666		760
667	return si;	761	return si;
668	}	762	}
…		…
678	connection::send_ping (const sockinfo &si, u8 pong)	772	connection::send_ping (const sockinfo &si, u8 pong)
679	{	773	{
680	ping_packet *pkt = new ping_packet;	774	ping_packet *pkt = new ping_packet;
681		775
682	pkt->setup (conf->id, pong ? ping_packet::PT_PONG : ping_packet::PT_PING);	776	pkt->setup (conf->id, pong ? ping_packet::PT_PONG : ping_packet::PT_PING);
		777
		778	slog (L_TRACE, "%s << %s [%s]", conf->nodename, pong ? "PT_PONG" : "PT_PING", (const char *)si);
		779
683	send_vpn_packet (pkt, si, IPTOS_LOWDELAY);	780	send_vpn_packet (pkt, si, IPTOS_LOWDELAY);
684		781
685	delete pkt;	782	delete pkt;
686	}	783	}
687		784
…		…
706		803
707	rsachallenge chg;	804	rsachallenge chg;
708	rsa_cache.gen (pkt->id, chg);	805	rsa_cache.gen (pkt->id, chg);
709	rsa_encrypt (conf->rsa_key, chg, pkt->encr);	806	rsa_encrypt (conf->rsa_key, chg, pkt->encr);
710		807
711	slog (L_TRACE, ">>%d PT_AUTH_REQ [%s]", conf->id, (const char *)si);	808	slog (L_TRACE, "%s << PT_AUTH_REQ [%s]", conf->nodename, (const char *)si);
712		809
713	send_vpn_packet (pkt, si, IPTOS_RELIABILITY \| IPTOS_LOWDELAY); // rsa is very very costly	810	send_vpn_packet (pkt, si, IPTOS_RELIABILITY \| IPTOS_LOWDELAY); // rsa is very very costly
714		811
715	delete pkt;	812	delete pkt;
716	}	813	}
…		…
724		821
725	rsa_hash (id, chg, pkt->response);	822	rsa_hash (id, chg, pkt->response);
726		823
727	pkt->hmac_set (octx);	824	pkt->hmac_set (octx);
728		825
729	slog (L_TRACE, ">>%d PT_AUTH_RES [%s]", conf->id, (const char *)si);	826	slog (L_TRACE, "%s << PT_AUTH_RES [%s]", conf->nodename, (const char *)si);
730		827
731	send_vpn_packet (pkt, si, IPTOS_RELIABILITY); // rsa is very very costly	828	send_vpn_packet (pkt, si, IPTOS_RELIABILITY); // rsa is very very costly
732		829
733	delete pkt;	830	delete pkt;
734	}	831	}
735		832
736	void	833	void
737	connection::send_connect_info (int rid, const sockinfo &rsi, u8 rprotocols)	834	connection::send_connect_info (int rid, const sockinfo &rsi, u8 rprotocols)
738	{	835	{
739	slog (L_TRACE, ">>%d PT_CONNECT_INFO(%d,%s)",	836	slog (L_TRACE, "%s << PT_CONNECT_INFO(%s,%s)", conf->nodename,
740	conf->id, rid, (const char *)rsi);	837	vpn->conns[rid - 1]->conf->nodename, (const char *)rsi);
741		838
742	connect_info_packet *r = new connect_info_packet (conf->id, rid, rsi, rprotocols);	839	connect_info_packet *r = new connect_info_packet (conf->id, rid, rsi, rprotocols);
743		840
744	r->hmac_set (octx);	841	r->hmac_set (octx);
745	send_vpn_packet (r, si);	842	send_vpn_packet (r, si);
746		843
747	delete r;	844	delete r;
748	}	845	}
749		846
750	void	847	inline void
751	connection::establish_connection_cb (ev::timer &w, int revents)	848	connection::establish_connection_cb (ev::timer &w, int revents)
752	{	849	{
753	if (!ictx	850	if (!ictx
754	&& conf != THISNODE	851	&& conf != THISNODE
755	&& connectmode != conf_node::C_NEVER	852	&& connectmode != conf_node::C_NEVER
756	&& connectmode != conf_node::C_DISABLED	853	&& connectmode != conf_node::C_DISABLED
757	&& !w.is_active ())	854	&& !w.is_active ())
758	{	855	{
		856	// a bit hacky, if ondemand, and packets are no longer queued, then reset the connection
		857	// and stop trying. should probably be handled by a per-connection expire handler.
		858	if (connectmode == conf_node::C_ONDEMAND && vpn_queue.empty () && data_queue.empty ())
		859	{
		860	reset_connection ();
		861	return;
		862	}
		863
		864	last_establish_attempt = ev_now ();
		865
759	ev::tstamp retry_int = ev::tstamp (retry_cnt & 3	866	ev::tstamp retry_int = ev::tstamp (retry_cnt & 3
760	? (retry_cnt & 3) + 1	867	? (retry_cnt & 3) + 1
761	: 1 << (retry_cnt >> 2));	868	: 1 << (retry_cnt >> 2));
762		869
763	reset_si ();	870	reset_si ();
764		871
765	bool slow = si.prot & PROT_SLOW;	872	bool slow = si.prot & PROT_SLOW;
766		873
767	if (si.prot && !si.host)	874	if (si.prot && !si.host && vpn->can_direct (THISNODE, conf))
768	{	875	{
769	slog (L_TRACE, _("%s: connection request (indirect)"), conf->nodename);
770	/TODO/ /* start the timer so we don't recurse endlessly */	876	/TODO/ /* start the timer so we don't recurse endlessly */
771	w.start (1);	877	w.start (1);
772	vpn->send_connect_request (conf->id);	878	vpn->send_connect_request (this);
773	}	879	}
774	else	880	else
775	{	881	{
776	slog (L_TRACE, _("%s: connection request (direct)"), conf->nodename, !!ictx, !!octx);	882	if (si.valid ())
		883	slog (L_DEBUG, _("%s: sending direct connection request to %s."),
		884	conf->nodename, (const char *)si);
777		885
778	const sockinfo &dsi = forward_si (si);	886	const sockinfo &dsi = forward_si (si);
779		887
780	slow = slow \|\| (dsi.prot & PROT_SLOW);	888	slow = slow \|\| (dsi.prot & PROT_SLOW);
781		889
…		…
786	else	894	else
787	send_ping (dsi, 0);	895	send_ping (dsi, 0);
788	}	896	}
789	}	897	}
790		898
791	retry_int *= slow ? 8. : 0.7;	899	retry_int *= slow ? 8. : 0.9;
792		900
793	if (retry_int < conf->max_retry)	901	if (retry_int < conf->max_retry)
794	retry_cnt++;	902	retry_cnt++;
795	else	903	else
796	retry_int = conf->max_retry;	904	retry_int = conf->max_retry;
…		…
807	slog (L_INFO, _("%s(%s): connection lost"),	915	slog (L_INFO, _("%s(%s): connection lost"),
808	conf->nodename, (const char *)si);	916	conf->nodename, (const char *)si);
809		917
810	if (::conf.script_node_down)	918	if (::conf.script_node_down)
811	{	919	{
812	run_script_cb cb;	920	run_script_cb *cb = new run_script_cb;
813	cb.set<connection, &connection::script_node_down> (this);	921	cb->set<connection, &connection::script_node_down> (this);
814	if (!run_script (cb, false))
815	slog (L_WARN, _("node-down command execution failed, continuing."));	922	run_script_queued (cb, _("node-down command execution failed, continuing."));
816	}	923	}
817	}	924	}
818		925
819	delete ictx; ictx = 0;	926	delete ictx; ictx = 0;
820	delete octx; octx = 0;	927	delete octx; octx = 0;
…		…
822	dnsv4_reset_connection ();	929	dnsv4_reset_connection ();
823	#endif	930	#endif
824		931
825	si.host = 0;	932	si.host = 0;
826		933
827	last_activity = 0;	934	last_activity = 0.;
		935	//last_si_change = 0.;
828	retry_cnt = 0;	936	retry_cnt = 0;
829		937
830	rekey.stop ();	938	rekey.stop ();
831	keepalive.stop ();	939	keepalive.stop ();
832	establish_connection.stop ();	940	establish_connection.stop ();
…		…
839	send_reset (si);	947	send_reset (si);
840		948
841	reset_connection ();	949	reset_connection ();
842	}	950	}
843		951
844	void	952	// poor-man's rekeying
		953	inline void
845	connection::rekey_cb (ev::timer &w, int revents)	954	connection::rekey_cb (ev::timer &w, int revents)
846	{	955	{
847	reset_connection ();	956	reset_connection ();
848	establish_connection ();	957	establish_connection ();
849	}	958	}
…		…
866	if (oseqno > MAX_SEQNO)	975	if (oseqno > MAX_SEQNO)
867	rekey ();	976	rekey ();
868	}	977	}
869		978
870	void	979	void
		980	connection::post_inject_queue ()
		981	{
		982	// force a connection every now and when when packets are sent (max 1/s)
		983	if (ev_now () - last_establish_attempt >= 0.95) // arbitrary
		984	establish_connection.stop ();
		985
		986	establish_connection ();
		987	}
		988
		989	void
871	connection::inject_data_packet (tap_packet pkt, bool broadcast/TODO DDD*/)	990	connection::inject_data_packet (tap_packet *pkt)
872	{	991	{
873	if (ictx && octx)	992	if (ictx && octx)
874	send_data_packet (pkt);	993	send_data_packet (pkt);
875	else	994	else
876	{	995	{
877	if (!broadcast)
878	data_queue.put (new tap_packet (*pkt));	996	data_queue.put (new tap_packet (*pkt));
879		997	post_inject_queue ();
880	establish_connection ();
881	}	998	}
882	}	999	}
883		1000
		1001	void
884	void connection::inject_vpn_packet (vpn_packet *pkt, int tos)	1002	connection::inject_vpn_packet (vpn_packet *pkt, int tos)
885	{	1003	{
886	if (ictx && octx)	1004	if (ictx && octx)
887	send_vpn_packet (pkt, si, tos);	1005	send_vpn_packet (pkt, si, tos);
888	else	1006	else
889	{	1007	{
890	vpn_queue.put ((vpn_packet )new data_packet ((data_packet *)pkt));	1008	vpn_queue.put ((vpn_packet )new data_packet ((data_packet *)pkt));
891		1009	post_inject_queue ();
892	establish_connection ();
893	}	1010	}
894	}	1011	}
895		1012
896	void	1013	void
897	connection::recv_vpn_packet (vpn_packet *pkt, const sockinfo &rsi)	1014	connection::recv_vpn_packet (vpn_packet *pkt, const sockinfo &rsi)
898	{	1015	{
899	last_activity = ev_now ();	1016	last_activity = ev_now ();
900		1017
901	slog (L_NOISE, "<<%d received packet type %d from %d to %d",	1018	slog (L_NOISE, "%s >> received packet type %d from %d to %d.",
902	conf->id, pkt->typ (), pkt->src (), pkt->dst ());	1019	conf->nodename, pkt->typ (), pkt->src (), pkt->dst ());
903		1020
904	if (connectmode == conf_node::C_DISABLED)	1021	if (connectmode == conf_node::C_DISABLED)
905	return;	1022	return;
906		1023
907	switch (pkt->typ ())	1024	switch (pkt->typ ())
908	{	1025	{
909	case vpn_packet::PT_PING:	1026	case vpn_packet::PT_PING:
		1027	slog (L_TRACE, "%s >> PT_PING", conf->nodename);
		1028
910	// we send pings instead of auth packets after some retries,	1029	// we send pings instead of auth packets after some retries,
911	// so reset the retry counter and establish a connection	1030	// so reset the retry counter and establish a connection
912	// when we receive a ping.	1031	// when we receive a ping.
913	if (!ictx)	1032	if (!ictx)
914	{	1033	{
915	if (auth_rate_limiter.can (rsi))	1034	if (auth_rate_limiter.can (rsi))
916	send_auth_request (rsi, true);	1035	send_auth_request (rsi, true);
917	}	1036	}
918	else	1037	else
		1038	// we would love to change the socket address here, but ping's aren't
		1039	// authenticated, so we best ignore it.
919	send_ping (rsi, 1); // pong	1040	send_ping (rsi, 1); // pong
920		1041
921	break;	1042	break;
922		1043
923	case vpn_packet::PT_PONG:	1044	case vpn_packet::PT_PONG:
		1045	slog (L_TRACE, "%s >> PT_PONG", conf->nodename);
		1046
		1047	// a PONG might mean that the other side doesn't really know
		1048	// about our desire for communication.
		1049	establish_connection ();
924	break;	1050	break;
925		1051
926	case vpn_packet::PT_RESET:	1052	case vpn_packet::PT_RESET:
927	{	1053	{
928	reset_connection ();	1054	reset_connection ();
929		1055
930	config_packet p = (config_packet ) pkt;	1056	config_packet p = (config_packet ) pkt;
931		1057
932	if (!p->chk_config ())	1058	if (!p->chk_config ())
933	{	1059	{
934	slog (L_WARN, _("%s(%s): protocol mismatch, disabling node"),	1060	slog (L_WARN, _("%s(%s): protocol mismatch, disabling node."),
935	conf->nodename, (const char *)rsi);	1061	conf->nodename, (const char *)rsi);
936	connectmode = conf_node::C_DISABLED;	1062	connectmode = conf_node::C_DISABLED;
937	}	1063	}
938	else if (connectmode == conf_node::C_ALWAYS)	1064	else if (connectmode == conf_node::C_ALWAYS)
939	establish_connection ();	1065	establish_connection ();
…		…
943	case vpn_packet::PT_AUTH_REQ:	1069	case vpn_packet::PT_AUTH_REQ:
944	if (auth_rate_limiter.can (rsi))	1070	if (auth_rate_limiter.can (rsi))
945	{	1071	{
946	auth_req_packet p = (auth_req_packet ) pkt;	1072	auth_req_packet p = (auth_req_packet ) pkt;
947		1073
948	slog (L_TRACE, "<<%d PT_AUTH_REQ(%d)", conf->id, p->initiate);	1074	slog (L_TRACE, "%s >> PT_AUTH_REQ(%s)", conf->nodename, p->initiate ? "initiate" : "reply");
949		1075
950	if (p->chk_config () && !strncmp (p->magic, MAGIC, 8))	1076	if (p->chk_config ()
		1077	&& (!strncmp (p->magic, MAGIC_OLD, 8) \|\| !strncmp (p->magic, MAGIC, 8)))
951	{	1078	{
952	if (p->prot_minor != PROTOCOL_MINOR)	1079	if (p->prot_minor != PROTOCOL_MINOR)
953	slog (L_INFO, _("%s(%s): protocol minor version mismatch: ours is %d, %s's is %d."),	1080	slog (L_INFO, _("%s(%s): protocol minor version mismatch: ours is %d, %s's is %d."),
954	conf->nodename, (const char *)rsi,	1081	conf->nodename, (const char *)rsi,
955	PROTOCOL_MINOR, conf->nodename, p->prot_minor);	1082	PROTOCOL_MINOR, conf->nodename, p->prot_minor);
…		…
981		1108
982	break;	1109	break;
983	}	1110	}
984	}	1111	}
985	else	1112	else
986	slog (L_WARN, _("%s(%s): protocol mismatch"),	1113	slog (L_WARN, _("%s(%s): protocol mismatch."),
987	conf->nodename, (const char *)rsi);	1114	conf->nodename, (const char *)rsi);
988		1115
989	send_reset (rsi);	1116	send_reset (rsi);
990	}	1117	}
991		1118
992	break;	1119	break;
993		1120
994	case vpn_packet::PT_AUTH_RES:	1121	case vpn_packet::PT_AUTH_RES:
995	{	1122	{
996	auth_res_packet p = (auth_res_packet ) pkt;	1123	auth_res_packet p = (auth_res_packet )pkt;
997		1124
998	slog (L_TRACE, "<<%d PT_AUTH_RES", conf->id);	1125	slog (L_TRACE, "%s >> PT_AUTH_RES", conf->nodename);
999		1126
1000	if (p->chk_config ())	1127	if (p->chk_config ())
1001	{	1128	{
1002	if (p->prot_minor != PROTOCOL_MINOR)	1129	if (p->prot_minor != PROTOCOL_MINOR)
1003	slog (L_INFO, _("%s(%s): protocol minor version mismatch: ours is %d, %s's is %d."),	1130	slog (L_INFO, _("%s(%s): protocol minor version mismatch: ours is %d, %s's is %d."),
…		…
1006		1133
1007	rsachallenge chg;	1134	rsachallenge chg;
1008		1135
1009	if (!rsa_cache.find (p->id, chg))	1136	if (!rsa_cache.find (p->id, chg))
1010	{	1137	{
1011	slog (L_ERR, _("%s(%s): unrequested auth response ignored"),	1138	slog (L_ERR, _("%s(%s): unrequested auth response, ignoring."),
1012	conf->nodename, (const char *)rsi);	1139	conf->nodename, (const char *)rsi);
1013	break;	1140	break;
1014	}	1141	}
1015	else	1142	else
1016	{	1143	{
1017	crypto_ctx *cctx = new crypto_ctx (chg, 0);	1144	crypto_ctx *cctx = new crypto_ctx (chg, 0);
1018		1145
1019	if (!p->hmac_chk (cctx))	1146	if (!p->hmac_chk (cctx))
1020	{	1147	{
1021	slog (L_ERR, _("%s(%s): hmac authentication error on auth response, received invalid packet\n"	1148	slog (L_ERR, _("%s(%s): hmac authentication error on auth response, received invalid packet\n"
1022	"could be an attack, or just corruption or a synchronization error"),	1149	"could be an attack, or just corruption or a synchronization error."),
1023	conf->nodename, (const char *)rsi);	1150	conf->nodename, (const char *)rsi);
1024	break;	1151	break;
1025	}	1152	}
1026	else	1153	else
1027	{	1154	{
…		…
1038	iseqno.reset (ntohl ((u32 )&chg[CHG_SEQNO]) & 0x7fffffff); // at least 2**31 sequence numbers are valid	1165	iseqno.reset (ntohl ((u32 )&chg[CHG_SEQNO]) & 0x7fffffff); // at least 2**31 sequence numbers are valid
1039		1166
1040	si = rsi;	1167	si = rsi;
1041	protocol = rsi.prot;	1168	protocol = rsi.prot;
1042		1169
		1170	slog (L_INFO, _("%s(%s): connection established (%s), protocol version %d.%d."),
		1171	conf->nodename, (const char *)rsi,
		1172	is_direct ? "direct" : "forwarded",
		1173	p->prot_major, p->prot_minor);
		1174
1043	connection_established ();	1175	connection_established ();
1044
1045	slog (L_INFO, _("%s(%s): connection established, protocol version %d.%d"),
1046	conf->nodename, (const char *)rsi,
1047	p->prot_major, p->prot_minor);
1048		1176
1049	if (::conf.script_node_up)	1177	if (::conf.script_node_up)
1050	{	1178	{
1051	run_script_cb cb;	1179	run_script_cb *cb = new run_script_cb;
1052	cb.set<connection, &connection::script_node_up> (this);	1180	cb->set<connection, &connection::script_node_up> (this);
1053	if (!run_script (cb, false))
1054	slog (L_WARN, _("node-up command execution failed, continuing."));	1181	run_script_queued (cb, _("node-up command execution failed, continuing."));
1055	}	1182	}
1056		1183
1057	break;	1184	break;
1058	}	1185	}
1059	else	1186	else
1060	slog (L_ERR, _("%s(%s): sent and received challenge do not match"),	1187	slog (L_ERR, _("%s(%s): sent and received challenge do not match."),
1061	conf->nodename, (const char *)rsi);	1188	conf->nodename, (const char *)rsi);
1062	}	1189	}
1063		1190
1064	delete cctx;	1191	delete cctx;
1065	}	1192	}
…		…
1081	{	1208	{
1082	vpndata_packet p = (vpndata_packet )pkt;	1209	vpndata_packet p = (vpndata_packet )pkt;
1083		1210
1084	if (!p->hmac_chk (ictx))	1211	if (!p->hmac_chk (ictx))
1085	slog (L_ERR, _("%s(%s): hmac authentication error, received invalid packet\n"	1212	slog (L_ERR, _("%s(%s): hmac authentication error, received invalid packet\n"
1086	"could be an attack, or just corruption or a synchronization error"),	1213	"could be an attack, or just corruption or a synchronization error."),
1087	conf->nodename, (const char *)rsi);	1214	conf->nodename, (const char *)rsi);
1088	else	1215	else
1089	{	1216	{
1090	u32 seqno;	1217	u32 seqno;
1091	tap_packet *d = p->unpack (this, seqno);	1218	tap_packet *d = p->unpack (this, seqno);
		1219	int seqclass = iseqno.seqno_classify (seqno);
1092		1220
1093	if (iseqno.recv_ok (seqno))	1221	if (seqclass == 0) // ok
1094	{	1222	{
1095	vpn->tap->send (d);	1223	vpn->tap->send (d);
1096		1224
1097	if (si != rsi)	1225	if (si != rsi)
1098	{	1226	{
1099	// fast re-sync on source address changes, useful especially for tcp/ip	1227	// fast re-sync on source address changes, useful especially for tcp/ip
		1228	//if (last_si_change < ev_now () + 5.)
1100	si = rsi;	1229	// {
1101
1102	slog (L_INFO, _("%s(%s): socket address changed to %s"),	1230	slog (L_INFO, _("%s(%s): changing socket address to %s."),
1103	conf->nodename, (const char )si, (const char )rsi);	1231	conf->nodename, (const char )si, (const char )rsi);
		1232
		1233	si = rsi;
		1234
		1235	if (::conf.script_node_change)
		1236	{
		1237	run_script_cb *cb = new run_script_cb;
		1238	cb->set<connection, &connection::script_node_change> (this);
		1239	run_script_queued (cb, _("node-change command execution failed, continuing."));
		1240	}
		1241
		1242	// }
		1243	//else
		1244	// slog (L_INFO, _("%s(%s): accepted packet from %s, not (yet) redirecting traffic."),
		1245	// conf->nodename, (const char )si, (const char )rsi);
1104	}	1246	}
		1247	}
		1248	else if (seqclass == 1) // far history
		1249	slog (L_ERR, _("received very old packet (received %08lx, expected %08lx). "
		1250	"possible replay attack, or just packet duplication/delay, ignoring."), seqno, iseqno.seq + 1);
		1251	else if (seqclass == 2) // in-window duplicate, happens often on wireless
		1252	slog (L_DEBUG, _("received recent duplicated packet (received %08lx, expected %08lx). "
		1253	"possible replay attack, or just packet duplication, ignoring."), seqno, iseqno.seq + 1);
		1254	else if (seqclass == 3) // reset
		1255	{
		1256	slog (L_ERR, _("received out-of-sync (far future) packet (received %08lx, expected %08lx). "
		1257	"probably just massive packet loss, sending reset."), seqno, iseqno.seq + 1);
		1258	send_reset (rsi);
1105	}	1259	}
1106		1260
1107	delete d;	1261	delete d;
1108	break;	1262	break;
1109	}	1263	}
…		…
1113	break;	1267	break;
1114		1268
1115	case vpn_packet::PT_CONNECT_REQ:	1269	case vpn_packet::PT_CONNECT_REQ:
1116	if (ictx && octx && rsi == si && pkt->hmac_chk (ictx))	1270	if (ictx && octx && rsi == si && pkt->hmac_chk (ictx))
1117	{	1271	{
1118	connect_req_packet p = (connect_req_packet ) pkt;	1272	connect_req_packet p = (connect_req_packet )pkt;
1119		1273
1120	if (p->id > 0 && p->id <= vpn->conns.size ())	1274	if (p->id > 0 && p->id <= vpn->conns.size ())
1121	{	1275	{
1122	connection *c = vpn->conns[p->id - 1];	1276	connection *c = vpn->conns[p->id - 1];
1123	conf->protocols = p->protocols;	1277	conf->protocols = p->protocols;
1124		1278
1125	slog (L_TRACE, "<<%d PT_CONNECT_REQ(%d) [%d]",	1279	slog (L_TRACE, "%s >> PT_CONNECT_REQ(%s) [%d]",
1126	conf->id, p->id, c->ictx && c->octx);	1280	conf->nodename, vpn->conns[p->id - 1]->conf->nodename, c->ictx && c->octx);
1127		1281
1128	if (c->ictx && c->octx)	1282	if (c->ictx && c->octx)
1129	{	1283	{
1130	// send connect_info packets to both sides, in case one is	1284	// send connect_info packets to both sides, in case one is
1131	// behind a nat firewall (or both ;)	1285	// behind a nat firewall (or both ;)
…		…
1154		1308
1155	c->conf->protocols = p->protocols;	1309	c->conf->protocols = p->protocols;
1156	protocol = best_protocol (c->conf->protocols & THISNODE->protocols & p->si.supported_protocols (c->conf));	1310	protocol = best_protocol (c->conf->protocols & THISNODE->protocols & p->si.supported_protocols (c->conf));
1157	p->si.upgrade_protocol (protocol, c->conf);	1311	p->si.upgrade_protocol (protocol, c->conf);
1158		1312
1159	slog (L_TRACE, "<<%d PT_CONNECT_INFO(%d,%s) (%d)",	1313	slog (L_TRACE, "%s >> PT_CONNECT_INFO(%s,%s) [%d]",
		1314	conf->nodename, vpn->conns[p->id - 1]->conf->nodename,
1160	conf->id, p->id, (const char *)p->si, !c->ictx && !c->octx);	1315	(const char *)p->si, !c->ictx && !c->octx);
1161		1316
1162	const sockinfo &dsi = forward_si (p->si);	1317	const sockinfo &dsi = forward_si (p->si);
1163		1318
1164	if (dsi.valid ())	1319	if (dsi.valid ())
1165	c->send_auth_request (dsi, true);	1320	c->send_auth_request (dsi, true);
…		…
1176	send_reset (rsi);	1331	send_reset (rsi);
1177	break;	1332	break;
1178	}	1333	}
1179	}	1334	}
1180		1335
		1336	inline void
1181	void connection::keepalive_cb (ev::timer &w, int revents)	1337	connection::keepalive_cb (ev::timer &w, int revents)
1182	{	1338	{
1183	if (ev_now () >= last_activity + ::conf.keepalive + 30)	1339	if (ev_now () >= last_activity + ::conf.keepalive + 15)
1184	{	1340	{
1185	reset_connection ();	1341	reset_connection ();
1186	establish_connection ();	1342	establish_connection ();
1187	}	1343	}
1188	else if (ev_now () < last_activity + ::conf.keepalive)	1344	else if (ev_now () < last_activity + ::conf.keepalive)
1189	w.start (last_activity + ::conf.keepalive - ev::now ());	1345	w.start (last_activity + ::conf.keepalive - ev::now ());
1190	else if (conf->connectmode != conf_node::C_ONDEMAND	1346	else if (conf->connectmode != conf_node::C_ONDEMAND
1191	\|\| THISNODE->connectmode != conf_node::C_ONDEMAND)	1347	\|\| THISNODE->connectmode != conf_node::C_ONDEMAND)
1192	{	1348	{
1193	send_ping (si);	1349	send_ping (si);
1194	w.start (5);	1350	w.start (3);
1195	}	1351	}
1196	else if (ev_now () < last_activity + ::conf.keepalive + 10)	1352	else if (ev_now () < last_activity + ::conf.keepalive + 10)
1197	// hold ondemand connections implicitly a few seconds longer	1353	// hold ondemand connections implicitly a few seconds longer
1198	// should delete octx, though, or something like that ;)	1354	// should delete octx, though, or something like that ;)
1199	w.start (last_activity + ::conf.keepalive + 10 - ev::now ());	1355	w.start (last_activity + ::conf.keepalive + 10 - ev::now ());
1200	else	1356	else
1201	reset_connection ();	1357	reset_connection ();
1202	}	1358	}
1203		1359
		1360	void
1204	void connection::send_connect_request (int id)	1361	connection::send_connect_request (int id)
1205	{	1362	{
1206	connect_req_packet *p = new connect_req_packet (conf->id, id, conf->protocols);	1363	connect_req_packet *p = new connect_req_packet (conf->id, id, conf->protocols);
1207		1364
1208	slog (L_TRACE, ">>%d PT_CONNECT_REQ(%d)", conf->id, id);	1365	slog (L_TRACE, "%s << PT_CONNECT_REQ(%s)",
		1366	conf->nodename, vpn->conns[id - 1]->conf->nodename);
1209	p->hmac_set (octx);	1367	p->hmac_set (octx);
1210	send_vpn_packet (p, si);	1368	send_vpn_packet (p, si);
1211		1369
1212	delete p;	1370	delete p;
1213	}	1371	}
1214		1372
		1373	void
1215	void connection::script_init_env (const char *ext)	1374	connection::script_init_env (const char *ext)
1216	{	1375	{
1217	char *env;	1376	char *env;
1218	asprintf (&env, "IFUPDATA%s=%s", ext, conf->if_up_data); putenv (env);	1377	asprintf (&env, "IFUPDATA%s=%s", ext, conf->if_up_data); putenv (env);
1219	asprintf (&env, "NODENAME%s=%s", ext, conf->nodename); putenv (env);	1378	asprintf (&env, "NODENAME%s=%s", ext, conf->nodename); putenv (env);
1220	asprintf (&env, "MAC%s=%02x:%02x:%02x:%02x:%02x:%02x", ext,	1379	asprintf (&env, "MAC%s=%02x:%02x:%02x:%02x:%02x:%02x", ext,
1221	0xfe, 0xfd, 0x80, 0x00, conf->id >> 8,	1380	0xfe, 0xfd, 0x80, 0x00, conf->id >> 8,
1222	conf->id & 0xff); putenv (env);	1381	conf->id & 0xff); putenv (env);
1223	}	1382	}
1224		1383
		1384	void
1225	void connection::script_init_connect_env ()	1385	connection::script_init_connect_env ()
1226	{	1386	{
1227	vpn->script_init_env ();	1387	vpn->script_init_env ();
1228		1388
1229	char *env;	1389	char *env;
1230	asprintf (&env, "DESTID=%d", conf->id); putenv (env);	1390	asprintf (&env, "DESTID=%d", conf->id); putenv (env);
		1391	asprintf (&env, "DESTSI=%s", (const char *)si); putenv (env);
1231	asprintf (&env, "DESTNODE=%s", conf->nodename); putenv (env);	1392	asprintf (&env, "DESTNODE=%s", conf->nodename); putenv (env);
1232	asprintf (&env, "DESTIP=%s", si.ntoa ()); putenv (env);	1393	asprintf (&env, "DESTIP=%s", si.ntoa ()); putenv (env);
1233	asprintf (&env, "DESTPORT=%d", ntohs (si.port)); putenv (env);	1394	asprintf (&env, "DESTPORT=%d", ntohs (si.port)); putenv (env);
1234	}	1395	}
1235		1396
		1397	inline const char *
1236	const char *connection::script_node_up ()	1398	connection::script_node_up ()
1237	{	1399	{
1238	script_init_connect_env ();	1400	script_init_connect_env ();
1239		1401
1240	putenv ((char *)"STATE=up");	1402	putenv ((char *)"STATE=up");
1241		1403
…		…
1246	::conf.script_node_up ? ::conf.script_node_up : "node-up");	1408	::conf.script_node_up ? ::conf.script_node_up : "node-up");
1247		1409
1248	return filename;	1410	return filename;
1249	}	1411	}
1250		1412
		1413	inline const char *
		1414	connection::script_node_change ()
		1415	{
		1416	script_init_connect_env ();
		1417
		1418	putenv ((char *)"STATE=change");
		1419
		1420	char *filename;
		1421	asprintf (&filename,
		1422	"%s/%s",
		1423	confbase,
		1424	::conf.script_node_change ? ::conf.script_node_change : "node-change");
		1425
		1426	return filename;
		1427	}
		1428
		1429	inline const char *
1251	const char *connection::script_node_down ()	1430	connection::script_node_down ()
1252	{	1431	{
1253	script_init_connect_env ();	1432	script_init_connect_env ();
1254		1433
1255	putenv ((char *)"STATE=down");	1434	putenv ((char *)"STATE=down");
1256		1435
…		…
1262		1441
1263	return filename;	1442	return filename;
1264	}	1443	}
1265		1444
1266	connection::connection (struct vpn vpn, conf_node conf)	1445	connection::connection (struct vpn vpn, conf_node conf)
1267	: vpn(vpn), conf(conf)	1446	: vpn(vpn), conf(conf),
1268	#if ENABLE_DNS	1447	#if ENABLE_DNS
1269	, dns (0)	1448	dns (0),
1270	#endif	1449	#endif
		1450	data_queue(conf->max_ttl, conf->max_queue + 1),
		1451	vpn_queue(conf->max_ttl, conf->max_queue + 1)
1271	{	1452	{
1272	rekey .set<connection, &connection::rekey_cb > (this);	1453	rekey .set<connection, &connection::rekey_cb > (this);
1273	keepalive .set<connection, &connection::keepalive_cb > (this);	1454	keepalive .set<connection, &connection::keepalive_cb > (this);
1274	establish_connection.set<connection, &connection::establish_connection_cb> (this);	1455	establish_connection.set<connection, &connection::establish_connection_cb> (this);
1275		1456
		1457	last_establish_attempt = 0.;
1276	octx = ictx = 0;	1458	octx = ictx = 0;
1277	retry_cnt = 0;
1278		1459
1279	if (!conf->protocols) // make sure some protocol is enabled	1460	if (!conf->protocols) // make sure some protocol is enabled
1280	conf->protocols = PROT_UDPv4;	1461	conf->protocols = PROT_UDPv4;
1281		1462
1282	connectmode = conf_node::C_ALWAYS; // initial setting	1463	connectmode = conf->connectmode;
		1464
		1465	// queue a dummy packet to force an initial connection attempt
		1466	if (connectmode != conf_node::C_ALWAYS && connectmode != conf_node::C_DISABLED)
		1467	vpn_queue.put (new net_packet);
		1468
1283	reset_connection ();	1469	reset_connection ();
1284	}	1470	}
1285		1471
1286	connection::~connection ()	1472	connection::~connection ()
1287	{	1473	{
1288	shutdown ();	1474	shutdown ();
1289	}	1475	}
1290		1476
		1477	void
1291	void connection_init ()	1478	connection_init ()
1292	{	1479	{
1293	auth_rate_limiter.clear ();	1480	auth_rate_limiter.clear ();
1294	reset_rate_limiter.clear ();	1481	reset_rate_limiter.clear ();
1295	}	1482	}
1296		1483

Diff Legend

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

Comparing gvpe/src/connection.C (file contents): Revision 1.65 by pcg, Tue Dec 4 17:17:20 2007 UTC vs. Revision 1.90 by root, Tue Feb 8 23:11:35 2011 UTC

Diff Legend

Comparing gvpe/src/connection.C (file contents):
Revision 1.65 by pcg, Tue Dec 4 17:17:20 2007 UTC vs.
Revision 1.90 by root, Tue Feb 8 23:11:35 2011 UTC