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

Comparing gvpe/src/connection.C (file contents):
Revision 1.17 by pcg, Mon Sep 1 21:23:35 2003 UTC vs.
Revision 1.59 by pcg, Mon Dec 5 12:58:09 2005 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		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
5	it under the terms of the GNU General Public License as published by	8	it under the terms of the GNU General Public License as published by
6	the Free Software Foundation; either version 2 of the License, or	9	the Free Software Foundation; either version 2 of the License, or
7	(at your option) any later version.	10	(at your 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,
10	but WITHOUT ANY WARRANTY; without even the implied warranty of	13	but 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
12	GNU General Public License for more details.	15	GNU General 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
15	along with this program; if not, write to the Free Software	18	along with gvpe; if not, write to the Free Software
16	Foundation, Inc. 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA	19	Foundation, Inc. 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
17	*/	20	*/
18		21
19	#include "config.h"	22	#include "config.h"
20
21	extern "C" {
22	# include "lzf/lzf.h"
23	}
24		23
25	#include <list>	24	#include <list>
26		25
27	#include <openssl/rand.h>	26	#include <openssl/rand.h>
28	#include <openssl/evp.h>	27	#include <openssl/evp.h>
29	#include <openssl/rsa.h>	28	#include <openssl/rsa.h>
30	#include <openssl/err.h>	29	#include <openssl/err.h>
31
32	#include "gettext.h"
33		30
34	#include "conf.h"	31	#include "conf.h"
35	#include "slog.h"	32	#include "slog.h"
36	#include "device.h"	33	#include "device.h"
37	#include "vpn.h"	34	#include "vpn.h"
38	#include "connection.h"	35	#include "connection.h"
39		36
		37	#include "netcompat.h"
		38
40	#if !HAVE_RAND_PSEUDO_BYTES	39	#if !HAVE_RAND_PSEUDO_BYTES
41	# define RAND_pseudo_bytes RAND_bytes	40	# define RAND_pseudo_bytes RAND_bytes
42	#endif	41	#endif
43		42
44	#define MAGIC "vped\xbd\xc6\xdb\x82" // 8 bytes of magic	43	#define MAGIC "vped\xbd\xc6\xdb\x82" // 8 bytes of magic
45		44
		45	#define ULTRA_FAST 1
		46	#define HLOG 15
		47	#include "lzf/lzf.h"
		48	#include "lzf/lzf_c.c"
		49	#include "lzf/lzf_d.c"
		50
46	struct crypto_ctx	51	struct crypto_ctx
47	{	52	{
48	EVP_CIPHER_CTX cctx;	53	EVP_CIPHER_CTX cctx;
49	HMAC_CTX hctx;	54	HMAC_CTX hctx;
50		55
53	};	58	};
54		59
55	crypto_ctx::crypto_ctx (const rsachallenge &challenge, int enc)	60	crypto_ctx::crypto_ctx (const rsachallenge &challenge, int enc)
56	{	61	{
57	EVP_CIPHER_CTX_init (&cctx);	62	EVP_CIPHER_CTX_init (&cctx);
58	EVP_CipherInit_ex (&cctx, CIPHER, 0, &challenge[CHG_CIPHER_KEY], 0, enc);	63	require (EVP_CipherInit_ex (&cctx, CIPHER, 0, &challenge[CHG_CIPHER_KEY], 0, enc));
59	HMAC_CTX_init (&hctx);	64	HMAC_CTX_init (&hctx);
60	HMAC_Init_ex (&hctx, &challenge[CHG_HMAC_KEY], HMAC_KEYLEN, DIGEST, 0);	65	HMAC_Init_ex (&hctx, &challenge[CHG_HMAC_KEY], HMAC_KEYLEN, DIGEST, 0);
61	}	66	}
62		67
63	crypto_ctx::~crypto_ctx ()	68	crypto_ctx::~crypto_ctx ()
64	{	69	{
65	EVP_CIPHER_CTX_cleanup (&cctx);	70	require (EVP_CIPHER_CTX_cleanup (&cctx));
66	HMAC_CTX_cleanup (&hctx);	71	HMAC_CTX_cleanup (&hctx);
67	}	72	}
68		73
69	static void	74	static void
70	rsa_hash (const rsaid &id, const rsachallenge &chg, rsaresponse &h)	75	rsa_hash (const rsaid &id, const rsachallenge &chg, rsaresponse &h)
71	{	76	{
72	EVP_MD_CTX ctx;	77	EVP_MD_CTX ctx;
73		78
74	EVP_MD_CTX_init (&ctx);	79	EVP_MD_CTX_init (&ctx);
75	EVP_DigestInit (&ctx, RSA_HASH);	80	require (EVP_DigestInit (&ctx, RSA_HASH));
76	EVP_DigestUpdate(&ctx, &chg, sizeof chg);	81	require (EVP_DigestUpdate(&ctx, &chg, sizeof chg));
77	EVP_DigestUpdate(&ctx, &id, sizeof id);	82	require (EVP_DigestUpdate(&ctx, &id, sizeof id));
78	EVP_DigestFinal (&ctx, (unsigned char *)&h, 0);	83	require (EVP_DigestFinal (&ctx, (unsigned char *)&h, 0));
79	EVP_MD_CTX_cleanup (&ctx);	84	EVP_MD_CTX_cleanup (&ctx);
80	}	85	}
81		86
82	struct rsa_entry {	87	struct rsa_entry {
83	tstamp expire;	88	tstamp expire;
…		…
88	struct rsa_cache : list<rsa_entry>	93	struct rsa_cache : list<rsa_entry>
89	{	94	{
90	void cleaner_cb (time_watcher &w); time_watcher cleaner;	95	void cleaner_cb (time_watcher &w); time_watcher cleaner;
91		96
92	bool find (const rsaid &id, rsachallenge &chg)	97	bool find (const rsaid &id, rsachallenge &chg)
93	{	98	{
94	for (iterator i = begin (); i != end (); ++i)	99	for (iterator i = begin (); i != end (); ++i)
95	{	100	{
96	if (!memcmp (&id, &i->id, sizeof id) && i->expire > NOW)	101	if (!memcmp (&id, &i->id, sizeof id) && i->expire > NOW)
97	{	102	{
98	memcpy (&chg, &i->chg, sizeof chg);	103	memcpy (&chg, &i->chg, sizeof chg);
99		104
100	erase (i);	105	erase (i);
101	return true;	106	return true;
102	}	107	}
103	}	108	}
104		109
105	if (cleaner.at < NOW)	110	if (cleaner.at < NOW)
106	cleaner.start (NOW + RSA_TTL);	111	cleaner.start (NOW + RSA_TTL);
107		112
108	return false;	113	return false;
109	}	114	}
110		115
111	void gen (rsaid &id, rsachallenge &chg)	116	void gen (rsaid &id, rsachallenge &chg)
112	{	117	{
113	rsa_entry e;	118	rsa_entry e;
114		119
115	RAND_bytes ((unsigned char *)&id, sizeof id);	120	RAND_bytes ((unsigned char *)&id, sizeof id);
116	RAND_bytes ((unsigned char *)&chg, sizeof chg);	121	RAND_bytes ((unsigned char *)&chg, sizeof chg);
117		122
118	e.expire = NOW + RSA_TTL;	123	e.expire = NOW + RSA_TTL;
119	e.id = id;	124	e.id = id;
120	memcpy (&e.chg, &chg, sizeof chg);	125	memcpy (&e.chg, &chg, sizeof chg);
121		126
122	push_back (e);	127	push_back (e);
123		128
124	if (cleaner.at < NOW)	129	if (cleaner.at < NOW)
125	cleaner.start (NOW + RSA_TTL);	130	cleaner.start (NOW + RSA_TTL);
126	}	131	}
127		132
128	rsa_cache ()	133	rsa_cache ()
129	: cleaner (this, &rsa_cache::cleaner_cb)	134	: cleaner (this, &rsa_cache::cleaner_cb)
130	{ }	135	{ }
131		136
132	} rsa_cache;	137	} rsa_cache;
133		138
134	void rsa_cache::cleaner_cb (time_watcher &w)	139	void rsa_cache::cleaner_cb (time_watcher &w)
135	{	140	{
136	if (empty ())	141	if (!empty ())
137	w.at = TSTAMP_CANCEL;
138	else
139	{	142	{
140	w.at = NOW + RSA_TTL;	143	w.start (NOW + RSA_TTL);
141		144
142	for (iterator i = begin (); i != end (); )	145	for (iterator i = begin (); i != end (); )
143	if (i->expire <= NOW)	146	if (i->expire <= NOW)
144	i = erase (i);	147	i = erase (i);
145	else	148	else
…		…
197	// only do action once every x seconds per host whole allowing bursts.	200	// only do action once every x seconds per host whole allowing bursts.
198	// this implementation ("splay list" ;) is inefficient,	201	// this implementation ("splay list" ;) is inefficient,
199	// but low on resources.	202	// but low on resources.
200	struct net_rate_limiter : list<net_rateinfo>	203	struct net_rate_limiter : list<net_rateinfo>
201	{	204	{
202	static const double ALPHA = 1. - 1. / 600.; // allow bursts	205	# define NRL_ALPHA (1. - 1. / 600.) // allow bursts
203	static const double CUTOFF = 10.; // one event every CUTOFF seconds	206	# define NRL_CUTOFF 10. // one event every CUTOFF seconds
204	static const double EXPIRE = CUTOFF * 30.; // expire entries after this time	207	# define NRL_EXPIRE (NRL_CUTOFF * 30.) // expire entries after this time
205	static const double MAXDIF = CUTOFF * (1. / (1. - ALPHA)); // maximum diff /count value	208	# define NRL_MAXDIF (NRL_CUTOFF * (1. / (1. - NRL_ALPHA))) // maximum diff /count value
206		209
207	bool can (const sockinfo &si) { return can((u32)si.host); }	210	bool can (const sockinfo &si) { return can((u32)si.host); }
208	bool can (u32 host);	211	bool can (u32 host);
209	};	212	};
210		213
…		…
215	iterator i;	218	iterator i;
216		219
217	for (i = begin (); i != end (); )	220	for (i = begin (); i != end (); )
218	if (i->host == host)	221	if (i->host == host)
219	break;	222	break;
220	else if (i->last < NOW - EXPIRE)	223	else if (i->last < NOW - NRL_EXPIRE)
221	i = erase (i);	224	i = erase (i);
222	else	225	else
223	i++;	226	i++;
224		227
225	if (i == end ())	228	if (i == end ())
226	{	229	{
227	net_rateinfo ri;	230	net_rateinfo ri;
228		231
229	ri.host = host;	232	ri.host = host;
230	ri.pcnt = 1.;	233	ri.pcnt = 1.;
231	ri.diff = MAXDIF;	234	ri.diff = NRL_MAXDIF;
232	ri.last = NOW;	235	ri.last = NOW;
233		236
234	push_front (ri);	237	push_front (ri);
235		238
236	return true;	239	return true;
…		…
238	else	241	else
239	{	242	{
240	net_rateinfo ri (*i);	243	net_rateinfo ri (*i);
241	erase (i);	244	erase (i);
242		245
243	ri.pcnt = ri.pcnt * ALPHA;	246	ri.pcnt = ri.pcnt * NRL_ALPHA;
244	ri.diff = ri.diff * ALPHA + (NOW - ri.last);	247	ri.diff = ri.diff * NRL_ALPHA + (NOW - ri.last);
245		248
246	ri.last = NOW;	249	ri.last = NOW;
247		250
248	double dif = ri.diff / ri.pcnt;	251	double dif = ri.diff / ri.pcnt;
249		252
250	bool send = dif > CUTOFF;	253	bool send = dif > NRL_CUTOFF;
251		254
252	if (dif > MAXDIF)	255	if (dif > NRL_MAXDIF)
253	{	256	{
254	ri.pcnt = 1.;	257	ri.pcnt = 1.;
255	ri.diff = MAXDIF;	258	ri.diff = NRL_MAXDIF;
256	}	259	}
257	else if (send)	260	else if (send)
258	ri.pcnt++;	261	ri.pcnt++;
259		262
260	push_front (ri);	263	push_front (ri);
…		…
307	}	310	}
308		311
309	#define MAXVPNDATA (MAX_MTU - 6 - 6)	312	#define MAXVPNDATA (MAX_MTU - 6 - 6)
310	#define DATAHDR (sizeof (u32) + RAND_SIZE)	313	#define DATAHDR (sizeof (u32) + RAND_SIZE)
311		314
312	struct vpndata_packet:vpn_packet	315	struct vpndata_packet : vpn_packet
313	{	316	{
314	u8 data[MAXVPNDATA + DATAHDR]; // seqno	317	u8 data[MAXVPNDATA + DATAHDR]; // seqno
315		318
316	void setup (connection conn, int dst, u8 d, u32 len, u32 seqno);	319	void setup (connection conn, int dst, u8 d, u32 len, u32 seqno);
317	tap_packet unpack (connection conn, u32 &seqno);	320	tap_packet unpack (connection conn, u32 &seqno);
…		…
330	int outl = 0, outl2;	333	int outl = 0, outl2;
331	ptype type = PT_DATA_UNCOMPRESSED;	334	ptype type = PT_DATA_UNCOMPRESSED;
332		335
333	#if ENABLE_COMPRESSION	336	#if ENABLE_COMPRESSION
334	u8 cdata[MAX_MTU];	337	u8 cdata[MAX_MTU];
335	u32 cl;
336		338
		339	if (conn->features & ENABLE_COMPRESSION)
		340	{
337	cl = lzf_compress (d, l, cdata + 2, (l - 2) & ~7);	341	u32 cl = lzf_compress (d, l, cdata + 2, (l - 2) & ~7);
		342
338	if (cl)	343	if (cl)
339	{	344	{
340	type = PT_DATA_COMPRESSED;	345	type = PT_DATA_COMPRESSED;
341	d = cdata;	346	d = cdata;
342	l = cl + 2;	347	l = cl + 2;
343		348
344	d[0] = cl >> 8;	349	d[0] = cl >> 8;
345	d[1] = cl;	350	d[1] = cl;
		351	}
346	}	352	}
347	#endif	353	#endif
348		354
349	EVP_EncryptInit_ex (cctx, 0, 0, 0, 0);	355	require (EVP_EncryptInit_ex (cctx, 0, 0, 0, 0));
350		356
351	struct {	357	struct {
352	#if RAND_SIZE	358	#if RAND_SIZE
353	u8 rnd[RAND_SIZE];	359	u8 rnd[RAND_SIZE];
354	#endif	360	#endif
…		…
358	datahdr.seqno = ntohl (seqno);	364	datahdr.seqno = ntohl (seqno);
359	#if RAND_SIZE	365	#if RAND_SIZE
360	RAND_pseudo_bytes ((unsigned char *) datahdr.rnd, RAND_SIZE);	366	RAND_pseudo_bytes ((unsigned char *) datahdr.rnd, RAND_SIZE);
361	#endif	367	#endif
362		368
363	EVP_EncryptUpdate (cctx,	369	require (EVP_EncryptUpdate (cctx,
364	(unsigned char *) data + outl, &outl2,	370	(unsigned char *) data + outl, &outl2,
365	(unsigned char *) &datahdr, DATAHDR);	371	(unsigned char *) &datahdr, DATAHDR));
366	outl += outl2;	372	outl += outl2;
367		373
368	EVP_EncryptUpdate (cctx,	374	require (EVP_EncryptUpdate (cctx,
369	(unsigned char *) data + outl, &outl2,	375	(unsigned char *) data + outl, &outl2,
370	(unsigned char *) d, l);	376	(unsigned char *) d, l));
371	outl += outl2;	377	outl += outl2;
372		378
373	EVP_EncryptFinal_ex (cctx, (unsigned char *) data + outl, &outl2);	379	require (EVP_EncryptFinal_ex (cctx, (unsigned char *) data + outl, &outl2));
374	outl += outl2;	380	outl += outl2;
375		381
376	len = outl + data_hdr_size ();	382	len = outl + data_hdr_size ();
377		383
378	set_hdr (type, dst);	384	set_hdr (type, dst);
…		…
387	int outl = 0, outl2;	393	int outl = 0, outl2;
388	tap_packet *p = new tap_packet;	394	tap_packet *p = new tap_packet;
389	u8 *d;	395	u8 *d;
390	u32 l = len - data_hdr_size ();	396	u32 l = len - data_hdr_size ();
391		397
392	EVP_DecryptInit_ex (cctx, 0, 0, 0, 0);	398	require (EVP_DecryptInit_ex (cctx, 0, 0, 0, 0));
393		399
394	#if ENABLE_COMPRESSION	400	#if ENABLE_COMPRESSION
395	u8 cdata[MAX_MTU];	401	u8 cdata[MAX_MTU];
396		402
397	if (type == PT_DATA_COMPRESSED)	403	if (type == PT_DATA_COMPRESSED)
…		…
399	else	405	else
400	#endif	406	#endif
401	d = &(*p)[6 + 6 - DATAHDR];	407	d = &(*p)[6 + 6 - DATAHDR];
402		408
403	/* this overwrites part of the src mac, but we fix that later */	409	/* this overwrites part of the src mac, but we fix that later */
404	EVP_DecryptUpdate (cctx,	410	require (EVP_DecryptUpdate (cctx,
405	d, &outl2,	411	d, &outl2,
406	(unsigned char *)&data, len - data_hdr_size ());	412	(unsigned char *)&data, len - data_hdr_size ()));
407	outl += outl2;	413	outl += outl2;
408		414
409	EVP_DecryptFinal_ex (cctx, (unsigned char *)d + outl, &outl2);	415	require (EVP_DecryptFinal_ex (cctx, (unsigned char *)d + outl, &outl2));
410	outl += outl2;	416	outl += outl2;
411		417
412	seqno = ntohl ((u32 )(d + RAND_SIZE));	418	seqno = ntohl ((u32 )(d + RAND_SIZE));
413		419
414	id2mac (dst () ? dst() : THISNODE->id, p->dst);	420	id2mac (dst () ? dst() : THISNODE->id, p->dst);
…		…
443	{	449	{
444	// actually, hmaclen cannot be checked because the hmac	450	// actually, hmaclen cannot be checked because the hmac
445	// field comes before this data, so peers with other	451	// field comes before this data, so peers with other
446	// hmacs simply will not work.	452	// hmacs simply will not work.
447	u8 prot_major, prot_minor, randsize, hmaclen;	453	u8 prot_major, prot_minor, randsize, hmaclen;
448	u8 flags, challengelen, pad2, pad3;	454	u8 flags, challengelen, features, pad3;
449	u32 cipher_nid, digest_nid, hmac_nid;	455	u32 cipher_nid, digest_nid, hmac_nid;
450
451	const u8 curflags () const
452	{
453	return 0x80
454	\| (ENABLE_COMPRESSION ? 0x01 : 0x00);
455	}
456		456
457	void setup (ptype type, int dst);	457	void setup (ptype type, int dst);
458	bool chk_config () const;	458	bool chk_config () const;
		459
		460	static u8 get_features ()
		461	{
		462	u8 f = 0;
		463	#if ENABLE_COMPRESSION
		464	f \|= FEATURE_COMPRESSION;
		465	#endif
		466	#if ENABLE_ROHC
		467	f \|= FEATURE_ROHC;
		468	#endif
		469	#if ENABLE_BRIDGING
		470	f \|= FEATURE_BRIDGING;
		471	#endif
		472	return f;
		473	}
459	};	474	};
460		475
461	void config_packet::setup (ptype type, int dst)	476	void config_packet::setup (ptype type, int dst)
462	{	477	{
463	prot_major = PROTOCOL_MAJOR;	478	prot_major = PROTOCOL_MAJOR;
464	prot_minor = PROTOCOL_MINOR;	479	prot_minor = PROTOCOL_MINOR;
465	randsize = RAND_SIZE;	480	randsize = RAND_SIZE;
466	hmaclen = HMACLENGTH;	481	hmaclen = HMACLENGTH;
467	flags = curflags ();	482	flags = 0;
468	challengelen = sizeof (rsachallenge);	483	challengelen = sizeof (rsachallenge);
		484	features = get_features ();
469		485
470	cipher_nid = htonl (EVP_CIPHER_nid (CIPHER));	486	cipher_nid = htonl (EVP_CIPHER_nid (CIPHER));
471	digest_nid = htonl (EVP_MD_type (RSA_HASH));	487	digest_nid = htonl (EVP_MD_type (RSA_HASH));
472	hmac_nid = htonl (EVP_MD_type (DIGEST));	488	hmac_nid = htonl (EVP_MD_type (DIGEST));
473		489
…		…
476	}	492	}
477		493
478	bool config_packet::chk_config () const	494	bool config_packet::chk_config () const
479	{	495	{
480	if (prot_major != PROTOCOL_MAJOR)	496	if (prot_major != PROTOCOL_MAJOR)
481	slog (L_WARN, _("major version mismatch (%d <=> %d)"), prot_major, PROTOCOL_MAJOR);	497	slog (L_WARN, _("major version mismatch (remote %d <=> local %d)"), prot_major, PROTOCOL_MAJOR);
482	else if (randsize != RAND_SIZE)	498	else if (randsize != RAND_SIZE)
483	slog (L_WARN, _("rand size mismatch (%d <=> %d)"), randsize, RAND_SIZE);	499	slog (L_WARN, _("rand size mismatch (remote %d <=> local %d)"), randsize, RAND_SIZE);
484	else if (hmaclen != HMACLENGTH)	500	else if (hmaclen != HMACLENGTH)
485	slog (L_WARN, _("hmac length mismatch (%d <=> %d)"), hmaclen, HMACLENGTH);	501	slog (L_WARN, _("hmac length mismatch (remote %d <=> local %d)"), hmaclen, HMACLENGTH);
486	else if (flags != curflags ())
487	slog (L_WARN, _("flag mismatch (%x <=> %x)"), flags, curflags ());
488	else if (challengelen != sizeof (rsachallenge))	502	else if (challengelen != sizeof (rsachallenge))
489	slog (L_WARN, _("challenge length mismatch (%d <=> %d)"), challengelen, sizeof (rsachallenge));	503	slog (L_WARN, _("challenge length mismatch (remote %d <=> local %d)"), challengelen, sizeof (rsachallenge));
490	else if (cipher_nid != htonl (EVP_CIPHER_nid (CIPHER)))	504	else if (cipher_nid != htonl (EVP_CIPHER_nid (CIPHER)))
491	slog (L_WARN, _("cipher mismatch (%x <=> %x)"), ntohl (cipher_nid), EVP_CIPHER_nid (CIPHER));	505	slog (L_WARN, _("cipher mismatch (remote %x <=> local %x)"), ntohl (cipher_nid), EVP_CIPHER_nid (CIPHER));
492	else if (digest_nid != htonl (EVP_MD_type (RSA_HASH)))	506	else if (digest_nid != htonl (EVP_MD_type (RSA_HASH)))
493	slog (L_WARN, _("digest mismatch (%x <=> %x)"), ntohl (digest_nid), EVP_MD_type (RSA_HASH));	507	slog (L_WARN, _("digest mismatch (remote %x <=> local %x)"), ntohl (digest_nid), EVP_MD_type (RSA_HASH));
494	else if (hmac_nid != htonl (EVP_MD_type (DIGEST)))	508	else if (hmac_nid != htonl (EVP_MD_type (DIGEST)))
495	slog (L_WARN, _("hmac mismatch (%x <=> %x)"), ntohl (hmac_nid), EVP_MD_type (DIGEST));	509	slog (L_WARN, _("hmac mismatch (remote %x <=> local %x)"), ntohl (hmac_nid), EVP_MD_type (DIGEST));
496	else	510	else
497	return true;	511	return true;
498		512
499	return false;	513	return false;
500	}	514	}
501		515
502	struct auth_req_packet : config_packet	516	struct auth_req_packet : config_packet
503	{	517	{
504	char magic[8];	518	char magic[8];
505	u8 initiate; // false if this is just an automatic reply	519	u8 initiate; // false if this is just an automatic reply
506	u8 protocols; // supported protocols (will get patches on forward)	520	u8 protocols; // supported protocols (will be patched on forward)
507	u8 pad2, pad3;	521	u8 pad2, pad3;
508	rsaid id;	522	rsaid id;
509	rsaencrdata encr;	523	rsaencrdata encr;
510		524
511	auth_req_packet (int dst, bool initiate_, u8 protocols_)	525	auth_req_packet (int dst, bool initiate_, u8 protocols_)
…		…
572	{	586	{
573	if (ictx && octx)	587	if (ictx && octx)
574	{	588	{
575	connectmode = conf->connectmode;	589	connectmode = conf->connectmode;
576		590
		591	// make sure rekeying timeouts are slightly asymmetric
577	rekey.start (NOW + ::conf.rekey);	592	rekey.start (NOW + ::conf.rekey
		593	+ (conf->id > THISNODE->id ? 10 : 0));
578	keepalive.start (NOW + ::conf.keepalive);	594	keepalive.start (NOW + ::conf.keepalive);
579		595
580	// send queued packets	596	// send queued packets
581	if (ictx && octx)	597	if (ictx && octx)
582	{	598	{
…		…
595	}	611	}
596	else	612	else
597	{	613	{
598	retry_cnt = 0;	614	retry_cnt = 0;
599	establish_connection.start (NOW + 5);	615	establish_connection.start (NOW + 5);
600	keepalive.reset ();	616	keepalive.stop ();
601	rekey.reset ();	617	rekey.stop ();
602	}	618	}
603	}	619	}
604		620
605	void	621	void
606	connection::reset_si ()	622	connection::reset_si ()
…		…
608	protocol = best_protocol (THISNODE->protocols & conf->protocols);	624	protocol = best_protocol (THISNODE->protocols & conf->protocols);
609		625
610	// mask out protocols we cannot establish	626	// mask out protocols we cannot establish
611	if (!conf->udp_port) protocol &= ~PROT_UDPv4;	627	if (!conf->udp_port) protocol &= ~PROT_UDPv4;
612	if (!conf->tcp_port) protocol &= ~PROT_TCPv4;	628	if (!conf->tcp_port) protocol &= ~PROT_TCPv4;
		629	if (!conf->dns_port) protocol &= ~PROT_DNSv4;
		630
		631	if (protocol
		632	&& (!conf->can_direct (THISNODE)
		633	\|\| !THISNODE->can_direct (conf)))
		634	{
		635	slog (L_DEBUG, _("%s: direct connection denied"), conf->nodename);
		636	protocol = 0;
		637	}
613		638
614	si.set (conf, protocol);	639	si.set (conf, protocol);
615	}	640	}
616		641
617	// ensure sockinfo is valid, forward if necessary	642	// ensure sockinfo is valid, forward if necessary
…		…
622	{	647	{
623	connection *r = vpn->find_router ();	648	connection *r = vpn->find_router ();
624		649
625	if (r)	650	if (r)
626	{	651	{
627	slog (L_DEBUG, _("%s: no common protocol, trying indirectly through %s"),	652	slog (L_DEBUG, _("%s: no common protocol, trying indirectly through %s (%s)"),
628	conf->nodename, r->conf->nodename);	653	conf->nodename, r->conf->nodename, (const char *)r->si);
629	return r->si;	654	return r->si;
630	}	655	}
631	else	656	else
632	slog (L_DEBUG, _("%s: node unreachable, no common protocol"),	657	slog (L_DEBUG, _("%s: node unreachable, no common protocol"),
633	conf->nodename);	658	conf->nodename);
…		…
672	connection::send_auth_request (const sockinfo &si, bool initiate)	697	connection::send_auth_request (const sockinfo &si, bool initiate)
673	{	698	{
674	auth_req_packet *pkt = new auth_req_packet (conf->id, initiate, THISNODE->protocols);	699	auth_req_packet *pkt = new auth_req_packet (conf->id, initiate, THISNODE->protocols);
675		700
676	rsachallenge chg;	701	rsachallenge chg;
677
678	rsa_cache.gen (pkt->id, chg);	702	rsa_cache.gen (pkt->id, chg);
679		703	rsa_encrypt (conf->rsa_key, chg, pkt->encr);
680	if (0 > RSA_public_encrypt (sizeof chg,
681	(unsigned char )&chg, (unsigned char )&pkt->encr,
682	conf->rsa_key, RSA_PKCS1_OAEP_PADDING))
683	fatal ("RSA_public_encrypt error");
684		704
685	slog (L_TRACE, ">>%d PT_AUTH_REQ [%s]", conf->id, (const char *)si);	705	slog (L_TRACE, ">>%d PT_AUTH_REQ [%s]", conf->id, (const char *)si);
686		706
687	send_vpn_packet (pkt, si, IPTOS_RELIABILITY \| IPTOS_LOWDELAY); // rsa is very very costly	707	send_vpn_packet (pkt, si, IPTOS_RELIABILITY \| IPTOS_LOWDELAY); // rsa is very very costly
688		708
…		…
708	}	728	}
709		729
710	void	730	void
711	connection::send_connect_info (int rid, const sockinfo &rsi, u8 rprotocols)	731	connection::send_connect_info (int rid, const sockinfo &rsi, u8 rprotocols)
712	{	732	{
713	slog (L_TRACE, ">>%d PT_CONNECT_INFO(%d,%s)\n",	733	slog (L_TRACE, ">>%d PT_CONNECT_INFO(%d,%s)",
714	conf->id, rid, (const char *)rsi);	734	conf->id, rid, (const char *)rsi);
715		735
716	connect_info_packet *r = new connect_info_packet (conf->id, rid, rsi, rprotocols);	736	connect_info_packet *r = new connect_info_packet (conf->id, rid, rsi, rprotocols);
717		737
718	r->hmac_set (octx);	738	r->hmac_set (octx);
…		…
722	}	742	}
723		743
724	void	744	void
725	connection::establish_connection_cb (time_watcher &w)	745	connection::establish_connection_cb (time_watcher &w)
726	{	746	{
727	if (ictx \|\| conf == THISNODE	747	if (!ictx
		748	&& conf != THISNODE
728	\|\| connectmode == conf_node::C_NEVER	749	&& connectmode != conf_node::C_NEVER
729	\|\| connectmode == conf_node::C_DISABLED)	750	&& connectmode != conf_node::C_DISABLED
730	w.at = TSTAMP_CANCEL;	751	&& NOW > w.at)
731	else if (w.at <= NOW)
732	{	752	{
733	double retry_int = double (retry_cnt & 3 ? (retry_cnt & 3) : 1 << (retry_cnt >> 2)) * 0.6;	753	w.at = TSTAMP_MAX; // first disable this watcher in case of recursion
734		754
735	if (retry_int < 3600 * 8)	755	double retry_int = double (retry_cnt & 3
736	retry_cnt++;	756	? (retry_cnt & 3) + 1
737		757	: 1 << (retry_cnt >> 2));
738	w.at = NOW + retry_int;
739		758
740	reset_si ();	759	reset_si ();
		760
		761	bool slow = si.prot & PROT_SLOW;
741		762
742	if (si.prot && !si.host)	763	if (si.prot && !si.host)
743	vpn->send_connect_request (conf->id);	764	vpn->send_connect_request (conf->id);
744	else	765	else
745	{	766	{
746	const sockinfo &dsi = forward_si (si);	767	const sockinfo &dsi = forward_si (si);
		768
		769	slow = slow \|\| (dsi.prot & PROT_SLOW);
747		770
748	if (dsi.valid () && auth_rate_limiter.can (dsi))	771	if (dsi.valid () && auth_rate_limiter.can (dsi))
749	{	772	{
750	if (retry_cnt < 4)	773	if (retry_cnt < 4)
751	send_auth_request (dsi, true);	774	send_auth_request (dsi, true);
752	else	775	else
753	send_ping (dsi, 0);	776	send_ping (dsi, 0);
754	}	777	}
755	}	778	}
		779
		780	retry_int *= slow ? 8. : 0.7;
		781
		782	if (retry_int < conf->max_retry)
		783	retry_cnt++;
		784	else
		785	retry_int = conf->max_retry;
		786
		787	w.start (NOW + retry_int);
756	}	788	}
757	}	789	}
758		790
759	void	791	void
760	connection::reset_connection ()	792	connection::reset_connection ()
…		…
763	{	795	{
764	slog (L_INFO, _("%s(%s): connection lost"),	796	slog (L_INFO, _("%s(%s): connection lost"),
765	conf->nodename, (const char *)si);	797	conf->nodename, (const char *)si);
766		798
767	if (::conf.script_node_down)	799	if (::conf.script_node_down)
768	run_script (run_script_cb (this, &connection::script_node_down), false);	800	if (!run_script (run_script_cb (this, &connection::script_node_down), false))
		801	slog (L_WARN, _("node-down command execution failed, continuing."));
769	}	802	}
770		803
771	delete ictx; ictx = 0;	804	delete ictx; ictx = 0;
772	delete octx; octx = 0;	805	delete octx; octx = 0;
		806	#if ENABLE_DNS
		807	dnsv4_reset_connection ();
		808	#endif
773		809
774	si.host= 0;	810	si.host = 0;
775		811
776	last_activity = 0;	812	last_activity = 0;
777	retry_cnt = 0;	813	retry_cnt = 0;
778		814
779	rekey.reset ();	815	rekey.stop ();
780	keepalive.reset ();	816	keepalive.stop ();
781	establish_connection.reset ();	817	establish_connection.stop ();
782	}	818	}
783		819
784	void	820	void
785	connection::shutdown ()	821	connection::shutdown ()
786	{	822	{
…		…
791	}	827	}
792		828
793	void	829	void
794	connection::rekey_cb (time_watcher &w)	830	connection::rekey_cb (time_watcher &w)
795	{	831	{
796	w.at = TSTAMP_CANCEL;
797
798	reset_connection ();	832	reset_connection ();
799	establish_connection ();	833	establish_connection ();
800	}	834	}
801		835
802	void	836	void
803	connection::send_data_packet (tap_packet *pkt, bool broadcast)	837	connection::send_data_packet (tap_packet *pkt)
804	{	838	{
805	vpndata_packet *p = new vpndata_packet;	839	vpndata_packet *p = new vpndata_packet;
806	int tos = 0;	840	int tos = 0;
807		841
808	// I am not hilarious about peeking into packets, but so be it.	842	// I am not hilarious about peeking into packets, but so be it.
809	if (conf->inherit_tos	843	if (conf->inherit_tos && pkt->is_ipv4 ())
810	&& (pkt)[12] == 0x08 && (pkt)[13] == 0x00 // IP
811	&& ((*pkt)[14] & 0xf0) == 0x40) // IPv4
812	tos = (*pkt)[15] & IPTOS_TOS_MASK;	844	tos = (*pkt)[15] & IPTOS_TOS_MASK;
813		845
814	p->setup (this, broadcast ? 0 : conf->id, &((*pkt)[6 + 6]), pkt->len - 6 - 6, ++oseqno); // skip 2 macs	846	p->setup (this, conf->id, &((*pkt)[6 + 6]), pkt->len - 6 - 6, ++oseqno); // skip 2 macs
815	send_vpn_packet (p, si, tos);	847	send_vpn_packet (p, si, tos);
816		848
817	delete p;	849	delete p;
818		850
819	if (oseqno > MAX_SEQNO)	851	if (oseqno > MAX_SEQNO)
820	rekey ();	852	rekey ();
821	}	853	}
822		854
823	void	855	void
824	connection::inject_data_packet (tap_packet *pkt, bool broadcast)	856	connection::inject_data_packet (tap_packet pkt, bool broadcast/TODO DDD*/)
825	{	857	{
826	if (ictx && octx)	858	if (ictx && octx)
827	send_data_packet (pkt, broadcast);	859	send_data_packet (pkt);
828	else	860	else
829	{	861	{
830	if (!broadcast)//DDDD	862	if (!broadcast)
831	data_queue.put (new tap_packet (*pkt));	863	data_queue.put (new tap_packet (*pkt));
832		864
833	establish_connection ();	865	establish_connection ();
834	}	866	}
835	}	867	}
…		…
838	{	870	{
839	if (ictx && octx)	871	if (ictx && octx)
840	send_vpn_packet (pkt, si, tos);	872	send_vpn_packet (pkt, si, tos);
841	else	873	else
842	{	874	{
843	vpn_queue.put (new vpn_packet (*pkt));	875	vpn_queue.put ((vpn_packet )new data_packet ((data_packet *)pkt));
844		876
845	establish_connection ();	877	establish_connection ();
846	}	878	}
847	}	879	}
848		880
…		…
907	if (p->initiate)	939	if (p->initiate)
908	send_auth_request (rsi, false);	940	send_auth_request (rsi, false);
909		941
910	rsachallenge k;	942	rsachallenge k;
911		943
912	if (0 > RSA_private_decrypt (sizeof (p->encr),	944	if (!rsa_decrypt (::conf.rsa_key, p->encr, k))
913	(unsigned char )&p->encr, (unsigned char )&k,	945	{
914	::conf.rsa_key, RSA_PKCS1_OAEP_PADDING))
915	slog (L_ERR, _("%s(%s): challenge illegal or corrupted (%s). mismatched key or config file?"),	946	slog (L_ERR, _("%s(%s): challenge illegal or corrupted (%s). mismatched key or config file?"),
916	conf->nodename, (const char *)rsi, ERR_error_string (ERR_get_error (), 0));	947	conf->nodename, (const char *)rsi, ERR_error_string (ERR_get_error (), 0));
		948	break;
		949	}
917	else	950	else
918	{	951	{
919	delete octx;	952	delete octx;
920		953
921	octx = new crypto_ctx (k, 1);	954	octx = new crypto_ctx (k, 1);
922	oseqno = ntohl ((u32 )&k[CHG_SEQNO]) & 0x7fffffff;	955	oseqno = ntohl ((u32 )&k[CHG_SEQNO]) & 0x7fffffff;
923		956
924	conf->protocols = p->protocols;	957	conf->protocols = p->protocols;
		958	features = p->features & config_packet::get_features ();
925		959
926	send_auth_response (rsi, p->id, k);	960	send_auth_response (rsi, p->id, k);
927		961
928	connection_established ();	962	connection_established ();
929		963
…		…
954		988
955	rsachallenge chg;	989	rsachallenge chg;
956		990
957	if (!rsa_cache.find (p->id, chg))	991	if (!rsa_cache.find (p->id, chg))
958	{	992	{
959	slog (L_ERR, _("%s(%s): unrequested auth response"),	993	slog (L_ERR, _("%s(%s): unrequested auth response ignored"),
960	conf->nodename, (const char *)rsi);	994	conf->nodename, (const char *)rsi);
961	break;	995	break;
962	}	996	}
963	else	997	else
964	{	998	{
965	crypto_ctx *cctx = new crypto_ctx (chg, 0);	999	crypto_ctx *cctx = new crypto_ctx (chg, 0);
966		1000
967	if (!p->hmac_chk (cctx))	1001	if (!p->hmac_chk (cctx))
		1002	{
968	slog (L_ERR, _("%s(%s): hmac authentication error on auth response, received invalid packet\n"	1003	slog (L_ERR, _("%s(%s): hmac authentication error on auth response, received invalid packet\n"
969	"could be an attack, or just corruption or an synchronization error"),	1004	"could be an attack, or just corruption or a synchronization error"),
970	conf->nodename, (const char *)rsi);	1005	conf->nodename, (const char *)rsi);
		1006	break;
		1007	}
971	else	1008	else
972	{	1009	{
973	rsaresponse h;	1010	rsaresponse h;
974		1011
975	rsa_hash (p->id, chg, h);	1012	rsa_hash (p->id, chg, h);
…		…
990	slog (L_INFO, _("%s(%s): connection established, protocol version %d.%d"),	1027	slog (L_INFO, _("%s(%s): connection established, protocol version %d.%d"),
991	conf->nodename, (const char *)rsi,	1028	conf->nodename, (const char *)rsi,
992	p->prot_major, p->prot_minor);	1029	p->prot_major, p->prot_minor);
993		1030
994	if (::conf.script_node_up)	1031	if (::conf.script_node_up)
995	run_script (run_script_cb (this, &connection::script_node_up), false);	1032	if (!run_script (run_script_cb (this, &connection::script_node_up), false))
		1033	slog (L_WARN, _("node-up command execution failed, continuing."));
996		1034
997	break;	1035	break;
998	}	1036	}
999	else	1037	else
1000	slog (L_ERR, _("%s(%s): sent and received challenge do not match"),	1038	slog (L_ERR, _("%s(%s): sent and received challenge do not match"),
…		…
1021	{	1059	{
1022	vpndata_packet p = (vpndata_packet )pkt;	1060	vpndata_packet p = (vpndata_packet )pkt;
1023		1061
1024	if (!p->hmac_chk (ictx))	1062	if (!p->hmac_chk (ictx))
1025	slog (L_ERR, _("%s(%s): hmac authentication error, received invalid packet\n"	1063	slog (L_ERR, _("%s(%s): hmac authentication error, received invalid packet\n"
1026	"could be an attack, or just corruption or an synchronization error"),	1064	"could be an attack, or just corruption or a synchronization error"),
1027	conf->nodename, (const char *)rsi);	1065	conf->nodename, (const char *)rsi);
1028	else	1066	else
1029	{	1067	{
1030	u32 seqno;	1068	u32 seqno;
1031	tap_packet *d = p->unpack (this, seqno);	1069	tap_packet *d = p->unpack (this, seqno);
1032		1070
1033	if (iseqno.recv_ok (seqno))	1071	if (iseqno.recv_ok (seqno))
1034	{	1072	{
1035	vpn->tap->send (d);	1073	vpn->tap->send (d);
1036		1074
1037	if (p->dst () == 0) // re-broadcast
1038	for (vpn::conns_vector::iterator i = vpn->conns.begin (); i != vpn->conns.end (); ++i)
1039	{
1040	connection c = i;
1041
1042	if (c->conf != THISNODE && c->conf != conf)
1043	c->inject_data_packet (d);
1044	}
1045
1046	if (si != rsi)	1075	if (si != rsi)
1047	{	1076	{
1048	// fast re-sync on connection changes, useful especially for tcp/ip	1077	// fast re-sync on source address changes, useful especially for tcp/ip
1049	si = rsi;	1078	si = rsi;
1050		1079
1051	slog (L_INFO, _("%s(%s): socket address changed to %s"),	1080	slog (L_INFO, _("%s(%s): socket address changed to %s"),
1052	conf->nodename, (const char )si, (const char )rsi);	1081	conf->nodename, (const char )si, (const char )rsi);
1053	}	1082	}
1054
1055	delete d;
1056
1057	break;
1058	}	1083	}
		1084
		1085	delete d;
		1086	break;
1059	}	1087	}
1060	}	1088	}
1061		1089
1062	send_reset (rsi);	1090	send_reset (rsi);
1063	break;	1091	break;
…		…
1065	case vpn_packet::PT_CONNECT_REQ:	1093	case vpn_packet::PT_CONNECT_REQ:
1066	if (ictx && octx && rsi == si && pkt->hmac_chk (ictx))	1094	if (ictx && octx && rsi == si && pkt->hmac_chk (ictx))
1067	{	1095	{
1068	connect_req_packet p = (connect_req_packet ) pkt;	1096	connect_req_packet p = (connect_req_packet ) pkt;
1069		1097
1070	assert (p->id > 0 && p->id <= vpn->conns.size ()); // hmac-auth does not mean we accept anything	1098	if (p->id > 0 && p->id <= vpn->conns.size ())
1071	connection *c = vpn->conns[p->id - 1];
1072	conf->protocols = p->protocols;
1073
1074	slog (L_TRACE, "<<%d PT_CONNECT_REQ(%d) [%d]\n",
1075	conf->id, p->id, c->ictx && c->octx);
1076
1077	if (c->ictx && c->octx)
1078	{	1099	{
		1100	connection *c = vpn->conns[p->id - 1];
		1101	conf->protocols = p->protocols;
		1102
		1103	slog (L_TRACE, "<<%d PT_CONNECT_REQ(%d) [%d]",
		1104	conf->id, p->id, c->ictx && c->octx);
		1105
		1106	if (c->ictx && c->octx)
		1107	{
1079	// send connect_info packets to both sides, in case one is	1108	// send connect_info packets to both sides, in case one is
1080	// behind a nat firewall (or both ;)	1109	// behind a nat firewall (or both ;)
1081	c->send_connect_info (conf->id, si, conf->protocols);	1110	c->send_connect_info (conf->id, si, conf->protocols);
1082	send_connect_info (c->conf->id, c->si, c->conf->protocols);	1111	send_connect_info (c->conf->id, c->si, c->conf->protocols);
		1112	}
		1113	else
		1114	c->establish_connection ();
1083	}	1115	}
1084	else	1116	else
1085	c->establish_connection ();	1117	slog (L_WARN,
		1118	_("received authenticated connection request from unknown node #%d, config file mismatch?"),
		1119	p->id);
1086	}	1120	}
1087		1121
1088	break;	1122	break;
1089		1123
1090	case vpn_packet::PT_CONNECT_INFO:	1124	case vpn_packet::PT_CONNECT_INFO:
1091	if (ictx && octx && rsi == si && pkt->hmac_chk (ictx))	1125	if (ictx && octx && rsi == si && pkt->hmac_chk (ictx))
1092	{	1126	{
1093	connect_info_packet p = (connect_info_packet ) pkt;	1127	connect_info_packet p = (connect_info_packet )pkt;
1094		1128
1095	assert (p->id > 0 && p->id <= vpn->conns.size ()); // hmac-auth does not mean we accept anything	1129	if (p->id > 0 && p->id <= vpn->conns.size ())
1096		1130	{
1097	connection *c = vpn->conns[p->id - 1];	1131	connection *c = vpn->conns[p->id - 1];
1098		1132
1099	c->conf->protocols = p->protocols;	1133	c->conf->protocols = p->protocols;
1100	protocol = best_protocol (c->conf->protocols & THISNODE->protocols & p->si.supported_protocols (c->conf));	1134	protocol = best_protocol (c->conf->protocols & THISNODE->protocols & p->si.supported_protocols (c->conf));
1101	p->si.upgrade_protocol (protocol, c->conf);	1135	p->si.upgrade_protocol (protocol, c->conf);
1102		1136
1103	slog (L_TRACE, "<<%d PT_CONNECT_INFO(%d,%s) (%d)",	1137	slog (L_TRACE, "<<%d PT_CONNECT_INFO(%d,%s) (%d)",
1104	conf->id, p->id, (const char *)p->si, !c->ictx && !c->octx);	1138	conf->id, p->id, (const char *)p->si, !c->ictx && !c->octx);
1105		1139
1106	const sockinfo &dsi = forward_si (p->si);	1140	const sockinfo &dsi = forward_si (p->si);
1107		1141
1108	if (dsi.valid ())	1142	if (dsi.valid ())
1109	c->send_auth_request (dsi, true);	1143	c->send_auth_request (dsi, true);
		1144	}
		1145	else
		1146	slog (L_WARN,
		1147	_("received authenticated connection request from unknown node #%d, config file mismatch?"),
		1148	p->id);
1110	}	1149	}
1111		1150
1112	break;	1151	break;
1113		1152
1114	default:	1153	default:
…		…
1123	{	1162	{
1124	reset_connection ();	1163	reset_connection ();
1125	establish_connection ();	1164	establish_connection ();
1126	}	1165	}
1127	else if (NOW < last_activity + ::conf.keepalive)	1166	else if (NOW < last_activity + ::conf.keepalive)
1128	w.at = last_activity + ::conf.keepalive;	1167	w.start (last_activity + ::conf.keepalive);
1129	else if (conf->connectmode != conf_node::C_ONDEMAND	1168	else if (conf->connectmode != conf_node::C_ONDEMAND
1130	\|\| THISNODE->connectmode != conf_node::C_ONDEMAND)	1169	\|\| THISNODE->connectmode != conf_node::C_ONDEMAND)
1131	{	1170	{
1132	send_ping (si);	1171	send_ping (si);
1133	w.at = NOW + 5;	1172	w.start (NOW + 5);
1134	}	1173	}
1135	else if (NOW < last_activity + ::conf.keepalive + 10)	1174	else if (NOW < last_activity + ::conf.keepalive + 10)
1136	// hold ondemand connections implicitly a few seconds longer	1175	// hold ondemand connections implicitly a few seconds longer
1137	// should delete octx, though, or something like that ;)	1176	// should delete octx, though, or something like that ;)
1138	w.at = last_activity + ::conf.keepalive + 10;	1177	w.start (last_activity + ::conf.keepalive + 10);
1139	else	1178	else
1140	reset_connection ();	1179	reset_connection ();
1141	}	1180	}
1142		1181
1143	void connection::send_connect_request (int id)	1182	void connection::send_connect_request (int id)
…		…
1149	send_vpn_packet (p, si);	1188	send_vpn_packet (p, si);
1150		1189
1151	delete p;	1190	delete p;
1152	}	1191	}
1153		1192
		1193	void connection::script_init_env (const char *ext)
		1194	{
		1195	char *env;
		1196	asprintf (&env, "IFUPDATA%s=%s", ext, conf->if_up_data); putenv (env);
		1197	asprintf (&env, "NODENAME%s=%s", ext, conf->nodename); putenv (env);
		1198	asprintf (&env, "MAC%s=%02x:%02x:%02x:%02x:%02x:%02x", ext,
		1199	0xfe, 0xfd, 0x80, 0x00, conf->id >> 8,
		1200	conf->id & 0xff); putenv (env);
		1201	}
		1202
1154	void connection::script_node ()	1203	void connection::script_init_connect_env ()
1155	{	1204	{
1156	vpn->script_if_up ();	1205	vpn->script_init_env ();
1157		1206
1158	char *env;	1207	char *env;
1159	asprintf (&env, "DESTID=%d", conf->id); putenv (env);	1208	asprintf (&env, "DESTID=%d", conf->id); putenv (env);
1160	asprintf (&env, "DESTNODE=%s", conf->nodename); putenv (env);	1209	asprintf (&env, "DESTNODE=%s", conf->nodename); putenv (env);
1161	asprintf (&env, "DESTIP=%s", si.ntoa ()); putenv (env);	1210	asprintf (&env, "DESTIP=%s", si.ntoa ()); putenv (env);
1162	asprintf (&env, "DESTPORT=%d", ntohs (si.port)); putenv (env);	1211	asprintf (&env, "DESTPORT=%d", ntohs (si.port)); putenv (env);
1163	}	1212	}
1164		1213
1165	const char *connection::script_node_up ()	1214	const char *connection::script_node_up ()
1166	{	1215	{
1167	script_node ();	1216	script_init_connect_env ();
1168		1217
1169	putenv ("STATE=up");	1218	putenv ("STATE=up");
1170		1219
		1220	char *filename;
		1221	asprintf (&filename,
		1222	"%s/%s",
		1223	confbase,
1171	return ::conf.script_node_up ? ::conf.script_node_up : "node-up";	1224	::conf.script_node_up ? ::conf.script_node_up : "node-up");
		1225
		1226	return filename;
1172	}	1227	}
1173		1228
1174	const char *connection::script_node_down ()	1229	const char *connection::script_node_down ()
1175	{	1230	{
1176	script_node ();	1231	script_init_connect_env ();
1177		1232
1178	putenv ("STATE=down");	1233	putenv ("STATE=down");
1179		1234
1180	return ::conf.script_node_up ? ::conf.script_node_down : "node-down";	1235	char *filename;
1181	}	1236	asprintf (&filename,
		1237	"%s/%s",
		1238	confbase,
		1239	::conf.script_node_down ? ::conf.script_node_down : "node-down");
1182		1240
		1241	return filename;
		1242	}
		1243
1183	connection::connection(struct vpn *vpn_)	1244	connection::connection (struct vpn vpn, conf_node conf)
1184	: vpn(vpn_)	1245	: vpn(vpn), conf(conf)
1185	, rekey (this, &connection::rekey_cb)	1246	, rekey (this, &connection::rekey_cb)
1186	, keepalive (this, &connection::keepalive_cb)	1247	, keepalive (this, &connection::keepalive_cb)
1187	, establish_connection (this, &connection::establish_connection_cb)	1248	, establish_connection (this, &connection::establish_connection_cb)
		1249	#if ENABLE_DNS
		1250	, dns (0)
		1251	#endif
1188	{	1252	{
1189	octx = ictx = 0;	1253	octx = ictx = 0;
1190	retry_cnt = 0;	1254	retry_cnt = 0;
1191		1255
		1256	if (!conf->protocols) // make sure some protocol is enabled
		1257	conf->protocols = PROT_UDPv4;
		1258
1192	connectmode = conf_node::C_ALWAYS; // initial setting	1259	connectmode = conf_node::C_ALWAYS; // initial setting
1193	reset_connection ();	1260	reset_connection ();
1194	}	1261	}
1195		1262
1196	connection::~connection ()	1263	connection::~connection ()

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Comparing gvpe/src/connection.C (file contents): Revision 1.17 by pcg, Mon Sep 1 21:23:35 2003 UTC vs. Revision 1.59 by pcg, Mon Dec 5 12:58:09 2005 UTC

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Comparing gvpe/src/connection.C (file contents):
Revision 1.17 by pcg, Mon Sep 1 21:23:35 2003 UTC vs.
Revision 1.59 by pcg, Mon Dec 5 12:58:09 2005 UTC