2015-04-26 16:50:44 +02:00
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/*
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This file is part of libcapwap.
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libcapwap is free software: you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation, either version 3 of the License, or
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(at your option) any later version.
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libcapwap is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with Foobar. If not, see <http://www.gnu.org/licenses/>.
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*/
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2016-03-06 16:45:56 +01:00
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/**
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* @file
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* @brief Implementation output handler of capwap cw_out_local_ip_address
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*/
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#include <errno.h>
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2015-04-26 16:50:44 +02:00
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#include <sys/socket.h>
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#include <netinet/in.h>
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#include <arpa/inet.h>
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#include <string.h>
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#include "capwap.h"
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#include "capwap_items.h"
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#include "dbg.h"
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#include "log.h"
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#include "capwap.h"
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#include "conn.h"
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2016-03-06 16:45:56 +01:00
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/**
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* Output handler for Capwap Local IP Address message element.
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*
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* @param conn Connection object
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* @param action Pointer to action which called this handler
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* @param dst Destination buffer
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*
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* This handler determines the IP address from #conn->sock.
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* It can deal both with IPv4 and IPv6 sockets.
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*
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*/
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int cw_out_capwap_local_ip_address(struct conn *conn, struct cw_action_out *action,
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uint8_t * dst)
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{
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2016-03-06 16:45:56 +01:00
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struct sockaddr_storage a;
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socklen_t alen = sizeof(struct sockaddr_storage);
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int rc = getsockname(conn->sock, (struct sockaddr *) &a, &alen);
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if (rc != 0){
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cw_log(LOG_ERR,"Can't determine sock IP address - %s\n",strerror(errno));
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return 0;
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}
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2015-04-26 16:50:44 +02:00
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2016-03-06 16:45:56 +01:00
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int id;
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switch (((struct sockaddr *) &a)->sa_family) {
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2015-04-26 16:50:44 +02:00
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case AF_INET:
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{
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2016-03-06 16:45:56 +01:00
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struct sockaddr_in *sain = (struct sockaddr_in *) &a;
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id = CW_ELEM_CAPWAP_LOCAL_IPV4_ADDRESS;
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/* if (conn->capwap_mode == CW_MODE_CISCO)
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id = CW_ELEM_WTP_IPV4_IP_ADDRESS;
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2015-04-26 16:50:44 +02:00
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else
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id = CW_ELEM_CAPWAP_LOCAL_IPV4_ADDRESS;
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2016-03-06 16:45:56 +01:00
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*/
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cw_put_data(dst + 4, (uint8_t *) & sain->sin_addr, 4);
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return 4 + cw_put_elem_hdr(dst, id, 4);
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2015-04-26 16:50:44 +02:00
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}
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case AF_INET6:
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{
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2016-03-06 16:45:56 +01:00
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id = CW_ELEM_CAPWAP_LOCAL_IPV6_ADDRESS;
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/* if (conn->capwap_mode == CW_MODE_CISCO)
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id = CW_ELEM_WTP_IPV6_IP_ADDRESS;
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2015-04-26 16:50:44 +02:00
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else
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id = CW_ELEM_CAPWAP_LOCAL_IPV6_ADDRESS;
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2016-03-06 16:45:56 +01:00
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*/
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struct sockaddr_in6 *sain = (struct sockaddr_in6 *) &a;
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cw_put_data(dst + 4, (uint8_t *) & sain->sin6_addr, 16);
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return 16 + cw_put_elem_hdr(dst, id, 16);
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2015-04-26 16:50:44 +02:00
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}
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}
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2016-03-06 16:45:56 +01:00
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cw_log(DBG_MSG_ERR, "Can't determine CAPWAP Local IP Adress");
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2015-04-26 16:50:44 +02:00
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return 0;
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}
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