[apple/network_cmds.git] / racoon.tproj / vendorid.c

/*	$KAME: vendorid.c,v 1.8 2001/03/27 02:39:57 thorpej Exp $	*/

/*
 * Copyright (C) 1995, 1996, 1997, and 1998 WIDE Project.
 * All rights reserved.
 * 
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 * 3. Neither the name of the project nor the names of its contributors
 *    may be used to endorse or promote products derived from this software
 *    without specific prior written permission.
 * 
 * THIS SOFTWARE IS PROVIDED BY THE PROJECT AND CONTRIBUTORS ``AS IS'' AND
 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED.  IN NO EVENT SHALL THE PROJECT OR CONTRIBUTORS BE LIABLE
 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
 * SUCH DAMAGE.
 */

#include <sys/types.h>
#include <sys/param.h>

#include <stdlib.h>
#include <stdio.h>
#include <string.h>
#include <errno.h>
#include <ctype.h>

#include "var.h"
#include "misc.h"
#include "vmbuf.h"
#include "plog.h"
#include "debug.h"

#include "localconf.h"
#include "isakmp_var.h"
#include "isakmp.h"
#include "vendorid.h"
#include "crypto_openssl.h"

const char *vendorid_strings[] = VENDORID_STRINGS;

/*
 * set hashed vendor id.
 * hash function is always MD5.
 */
vchar_t *
set_vendorid(int vendorid)
{
	vchar_t vid, *vidhash;

	if (vendorid == VENDORID_UNKNOWN) {
		/*
		 * The default unknown ID gets translated to
		 * KAME/racoon.
		 */
		vendorid = VENDORID_KAME;
	}

	if (vendorid < 0 || vendorid >= NUMVENDORIDS) {
		plog(LLV_ERROR, LOCATION, NULL,
		    "invalid vendor ID index: %d\n", vendorid);
		return (NULL);
	}

	/* XXX Cast away const. */
	vid.v = (char *) vendorid_strings[vendorid];
	vid.l = strlen(vendorid_strings[vendorid]);

	vidhash = eay_md5_one(&vid);
	if (vidhash == NULL)
		plog(LLV_ERROR, LOCATION, NULL,
		    "unable to hash vendor ID string\n");

	return vidhash;
}

/*
 * Check the vendor ID payload -- return the vendor ID index
 * if we find a recognized one, or UNKNOWN if we don't.
 */
int
check_vendorid(gen)
	struct isakmp_gen *gen;		/* points to Vendor ID payload */
{
	vchar_t vid, *vidhash;
	int i, vidlen;

	if (gen == NULL)
		return (VENDORID_UNKNOWN);

	vidlen = ntohs(gen->len) - sizeof(*gen);

	for (i = 0; i < NUMVENDORIDS; i++) {
		/* XXX Cast away const. */
		vid.v = (char *) vendorid_strings[i];
		vid.l = strlen(vendorid_strings[i]);

		vidhash = eay_md5_one(&vid);
		if (vidhash == NULL) {
			plog(LLV_ERROR, LOCATION, NULL,
			    "unable to hash vendor ID string\n");
			return (VENDORID_UNKNOWN);
		}

		/*
		 * XXX THIS IS NOT QUITE RIGHT!
		 *
		 * But we need to be able to recognize
		 * Windows 2000's ID, which is the MD5
		 * has of a known string + 4 bytes of
		 * what appears to be version info.
		 */
		if (vidhash->l <= vidlen &&
		    memcmp(vidhash->v, gen + 1, vidhash->l) == 0) {
			plog(LLV_INFO, LOCATION, NULL,
			    "received Vendor ID: %s\n",
			    vendorid_strings[i]);
			vfree(vidhash);
			return (i);
		}
		vfree(vidhash);
	}

	plog(LLV_DEBUG, LOCATION, NULL, "received unknown Vendor ID\n");
	return (VENDORID_UNKNOWN);
}
Commit	Line	Data
ac2f15b3	1	/* $KAME: vendorid.c,v 1.8 2001/03/27 02:39:57 thorpej Exp $ */
7ba0088d A	2
	3	/*
	4	* Copyright (C) 1995, 1996, 1997, and 1998 WIDE Project.
	5	* All rights reserved.
	6	*
	7	* Redistribution and use in source and binary forms, with or without
	8	* modification, are permitted provided that the following conditions
	9	* are met:
	10	* 1. Redistributions of source code must retain the above copyright
	11	* notice, this list of conditions and the following disclaimer.
	12	* 2. Redistributions in binary form must reproduce the above copyright
	13	* notice, this list of conditions and the following disclaimer in the
	14	* documentation and/or other materials provided with the distribution.
	15	* 3. Neither the name of the project nor the names of its contributors
	16	* may be used to endorse or promote products derived from this software
	17	* without specific prior written permission.
	18	*
	19	* THIS SOFTWARE IS PROVIDED BY THE PROJECT AND CONTRIBUTORS ``AS IS'' AND
	20	* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
	21	* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
	22	* ARE DISCLAIMED. IN NO EVENT SHALL THE PROJECT OR CONTRIBUTORS BE LIABLE
	23	* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
	24	* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
	25	* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
	26	* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
	27	* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
	28	* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
	29	* SUCH DAMAGE.
	30	*/
	31
	32	#include <sys/types.h>
	33	#include <sys/param.h>
	34
	35	#include <stdlib.h>
	36	#include <stdio.h>
	37	#include <string.h>
	38	#include <errno.h>
	39	#include <ctype.h>
	40
	41	#include "var.h"
	42	#include "misc.h"
	43	#include "vmbuf.h"
	44	#include "plog.h"
	45	#include "debug.h"
	46
	47	#include "localconf.h"
	48	#include "isakmp_var.h"
	49	#include "isakmp.h"
	50	#include "vendorid.h"
	51	#include "crypto_openssl.h"
	52
	53	const char *vendorid_strings[] = VENDORID_STRINGS;
	54
	55	/*
	56	* set hashed vendor id.
	57	* hash function is always MD5.
	58	*/
	59	vchar_t *
	60	set_vendorid(int vendorid)
	61	{
	62	vchar_t vid, *vidhash;
	63
	64	if (vendorid == VENDORID_UNKNOWN) {
	65	/*
66	* The default unknown ID gets translated to
67	* KAME/racoon.
68	*/
69	vendorid = VENDORID_KAME;
70	}
71
72	if (vendorid < 0 \|\| vendorid >= NUMVENDORIDS) {
73	plog(LLV_ERROR, LOCATION, NULL,
74	"invalid vendor ID index: %d\n", vendorid);
75	return (NULL);
76	}
77
78	/* XXX Cast away const. */
79	vid.v = (char *) vendorid_strings[vendorid];
80	vid.l = strlen(vendorid_strings[vendorid]);
81
82	vidhash = eay_md5_one(&vid);
83	if (vidhash == NULL)
84	plog(LLV_ERROR, LOCATION, NULL,
85	"unable to hash vendor ID string\n");
86
87	return vidhash;
88	}
89
90	/*
91	* Check the vendor ID payload -- return the vendor ID index
92	* if we find a recognized one, or UNKNOWN if we don't.
93	*/
94	int
95	check_vendorid(gen)
96	struct isakmp_gen gen; / points to Vendor ID payload */
97	{
98	vchar_t vid, *vidhash;
99	int i, vidlen;
100
101	if (gen == NULL)
102	return (VENDORID_UNKNOWN);
103
104	vidlen = ntohs(gen->len) - sizeof(*gen);
105
106	for (i = 0; i < NUMVENDORIDS; i++) {
107	/* XXX Cast away const. */
108	vid.v = (char *) vendorid_strings[i];
109	vid.l = strlen(vendorid_strings[i]);
110
111	vidhash = eay_md5_one(&vid);
112	if (vidhash == NULL) {
113	plog(LLV_ERROR, LOCATION, NULL,
114	"unable to hash vendor ID string\n");
115	return (VENDORID_UNKNOWN);
116	}
117
118	/*
119	* XXX THIS IS NOT QUITE RIGHT!
120	*
121	* But we need to be able to recognize
122	* Windows 2000's ID, which is the MD5
123	* has of a known string + 4 bytes of
124	* what appears to be version info.
125	*/
126	if (vidhash->l <= vidlen &&
127	memcmp(vidhash->v, gen + 1, vidhash->l) == 0) {
128	plog(LLV_INFO, LOCATION, NULL,
129	"received Vendor ID: %s\n",
130	vendorid_strings[i]);
131	vfree(vidhash);
132	return (i);
133	}
134	vfree(vidhash);
135	}
136
137	plog(LLV_DEBUG, LOCATION, NULL, "received unknown Vendor ID\n");
138	return (VENDORID_UNKNOWN);
139	}