actube/src/cw/sock_addrlen.c

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/*
This file is part of libcapwap.
libcapwap is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
libcapwap 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 General Public License for more details.
You should have received a copy of the GNU General Public License
along with Foobar. If not, see <http://www.gnu.org/licenses/>.
*/
/**
*@file
*@brief Implementation of sock_addrlen.
*/
#include <sys/types.h>
#include <sys/socket.h>
#include <netinet/in.h>
#ifdef AF_LINK
# include <net/if_dl.h>
#endif
#ifdef AF_PACKET
# include <netpacket/packet.h>
#endif
#include "sock.h"
/**
* Determine the length of a sockaddr struct
* @param sa pointer to socket address
* @return length of socket
*/
int sock_addrlen(const struct sockaddr * sa)
{
/* determine length */
switch(sa->sa_family){
case AF_INET:
return sizeof(struct sockaddr_in);
case AF_INET6:
return sizeof(struct sockaddr_in6);
#ifdef AF_PACKET
case AF_PACKET:
return sizeof(struct sockaddr_ll);
#endif
#ifdef AF_LINK
case AF_LINK:
return sizeof(struct sockaddr_dl);
#endif
default:
return 0;
}
}