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lsa_peer.c
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lsa_peer.c
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/*
* dvpn, a multipoint vpn implementation
* Copyright (C) 2016 Lennert Buytenhek
*
* This library is free software; you can redistribute it and/or modify
* it under the terms of the GNU Lesser General Public License version
* 2.1 as published by the Free Software Foundation.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Lesser General Public License version 2.1 for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License version 2.1 along with this library; if not, write to the
* Free Software Foundation, Inc., 51 Franklin Street - Fifth Floor,
* Boston, MA 02110-1301, USA.
*/
#include <stdio.h>
#include <stdlib.h>
#include <arpa/inet.h>
#include <stdint.h>
#include "lsa.h"
#include "lsa_peer.h"
#include "lsa_type.h"
int lsa_get_peer_info(struct lsa_peer_info *lpi, struct lsa *lsa,
const uint8_t *peerid)
{
struct lsa_attr *peer;
struct lsa_attr_set *set;
struct lsa_attr *attr;
peer = lsa_find_attr(lsa, LSA_ATTR_TYPE_PEER, peerid, NODE_ID_LEN);
if (peer == NULL || !peer->attr_signed || !peer->data_is_attr_set)
return -1;
set = lsa_attr_data(peer);
attr = lsa_attr_set_find_attr(set, LSA_PEER_ATTR_TYPE_METRIC, NULL, 0);
if (attr != NULL && attr->attr_signed && attr->datalen == 2)
lpi->metric = ntohs(*((uint16_t *)lsa_attr_data(attr)));
else
lpi->metric = 1;
attr = lsa_attr_set_find_attr(set, LSA_PEER_ATTR_TYPE_PEER_FLAGS,
NULL, 0);
if (attr != NULL && attr->attr_signed && attr->datalen == 1)
lpi->flags = *((uint8_t *)lsa_attr_data(attr));
else
lpi->flags = 0;
return 0;
}