GCC Code Coverage Report
Directory: ./ Exec Total Coverage
File: sbin/isakmpd/vendor.c Lines: 0 47 0.0 %
Date: 2017-11-07 Branches: 0 22 0.0 %

Line Branch Exec Source
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/*	$OpenBSD: vendor.c,v 1.5 2012/03/24 14:47:25 markus Exp $	*/
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/*
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 * Copyright (c) 2006 Hans-Joerg Hoexer <hshoexer@openbsd.org>
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 *
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 * Permission to use, copy, modify, and distribute this software for any
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 * purpose with or without fee is hereby granted, provided that the above
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 * copyright notice and this permission notice appear in all copies.
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 *
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 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
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 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
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 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
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 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
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 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
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 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
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 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
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 */
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#include <sys/types.h>
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#include <stdlib.h>
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#include <string.h>
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#include "exchange.h"
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#include "hash.h"
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#include "log.h"
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#include "message.h"
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#include "vendor.h"
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static struct vendor_cap openbsd_vendor_cap[] = {
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	{ "OpenBSD-5.2", NULL, 0 },
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};
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#define NUMVIDS	(sizeof openbsd_vendor_cap / sizeof openbsd_vendor_cap[0])
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static int
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setup_vendor_hashes(void)
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{
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	struct hash	*hash;
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	int		 i, n = NUMVIDS;
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	hash = hash_get(HASH_MD5);
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	if (!hash) {
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		log_print("setup_vendor_hashes: could not find MD5 hash");
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		return -1;
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	}
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	for (i = 0; i < n; i++) {
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		openbsd_vendor_cap[i].hashsize = hash->hashsize;
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		openbsd_vendor_cap[i].hash = calloc(hash->hashsize,
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		    sizeof(u_int8_t));
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		if (openbsd_vendor_cap[i].hash == NULL) {
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			log_error("setup_vendor_hashes: calloc failed");
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			goto errout;
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		}
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		hash->Init(hash->ctx);
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		hash->Update(hash->ctx,
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		    (unsigned char *)openbsd_vendor_cap[i].text,
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		    strlen(openbsd_vendor_cap[i].text));
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		hash->Final(openbsd_vendor_cap[i].hash, hash->ctx);
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		LOG_DBG((LOG_EXCHANGE, 50, "setup_vendor_hashes: "
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		    "MD5(\"%s\") (%lu bytes)", openbsd_vendor_cap[i].text,
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		    (unsigned long)hash->hashsize));
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		LOG_DBG_BUF((LOG_EXCHANGE, 50, "setup_vendor_hashes",
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		    openbsd_vendor_cap[i].hash, hash->hashsize));
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	}
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	return 0;
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errout:
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	for (i = 0; i < n; i++)
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		free(openbsd_vendor_cap[i].hash);
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	return -1;
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}
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void
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vendor_init(void)
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{
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	setup_vendor_hashes();
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}
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int
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add_vendor_openbsd(struct message *msg)
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{
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	u_int8_t	*buf;
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	size_t		 buflen;
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	int		 i, n = NUMVIDS;
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	for (i = 0; i < n; i++) {
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		buflen = openbsd_vendor_cap[i].hashsize + ISAKMP_GEN_SZ;
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		if ((buf = calloc(buflen, sizeof(char))) == NULL) {
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			log_error("add_vendor_payload: calloc(%lu) failed",
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			    (unsigned long)buflen);
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			return -1;
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		}
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		SET_ISAKMP_GEN_LENGTH(buf, buflen);
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		memcpy(buf + ISAKMP_VENDOR_ID_OFF, openbsd_vendor_cap[i].hash,
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		    openbsd_vendor_cap[i].hashsize);
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		if (message_add_payload(msg, ISAKMP_PAYLOAD_VENDOR, buf,
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		    buflen, 1)) {
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			free(buf);
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			return -1;
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		}
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	}
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	return 0;
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}
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void
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check_vendor_openbsd(struct message *msg, struct payload *p)
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{
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	u_int8_t	*pbuf = p->p;
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	ssize_t		 vlen;
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	int		 i, n = NUMVIDS;
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	if (msg->exchange->flags & EXCHANGE_FLAG_OPENBSD) {
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		p->flags |= PL_MARK;
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		return;
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	}
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	vlen = GET_ISAKMP_GEN_LENGTH(pbuf) - ISAKMP_GEN_SZ;
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	for (i = 0; i < n; i++) {
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		if (vlen != openbsd_vendor_cap[i].hashsize) {
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			LOG_DBG((LOG_EXCHANGE, 90,
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			    "check_vendor_openbsd: bad size %lu != %lu",
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			    (unsigned long)vlen,
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			    (unsigned long)openbsd_vendor_cap[i].hashsize));
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			continue;
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		}
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		if (memcmp(openbsd_vendor_cap[i].hash, pbuf + ISAKMP_GEN_SZ,
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		    vlen) == 0) {
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			msg->exchange->flags |= EXCHANGE_FLAG_OPENBSD;
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			LOG_DBG((LOG_EXCHANGE, 10, "check_vendor_openbsd: "
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			    "OpenBSD (%s)", openbsd_vendor_cap[i].text));
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		}
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		p->flags |= PL_MARK;
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	}
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}