actube/src/cw/cw_put_local_ip_address.c

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#include <errno.h>
#include <sys/socket.h>
#include <netinet/in.h>
#include <arpa/inet.h>
#include "log.h"
#include "dbg.h"
#include "cw.h"
int cw_put_local_ip_address(int sock, uint8_t *dst, int ipv4elem_id, int ipv6elem_id)
{
struct sockaddr_storage a;
socklen_t alen = sizeof(struct sockaddr_storage);
int rc = getsockname(sock, (struct sockaddr *) &a, &alen);
if (rc != 0){
cw_log(LOG_ERR,"Can't determine sock IP address - %s\n",strerror(errno));
return 0;
}
int id;
switch (((struct sockaddr *) &a)->sa_family) {
case AF_INET:
{
struct sockaddr_in *sain = (struct sockaddr_in *) &a;
id = ipv4elem_id;
cw_put_data(dst + 4, (uint8_t *) & sain->sin_addr, 4);
return 4 + cw_put_elem_hdr(dst, id, 4);
}
case AF_INET6:
{
id = ipv6elem_id;
struct sockaddr_in6 *sain = (struct sockaddr_in6 *) &a;
cw_put_data(dst + 4, (uint8_t *) & sain->sin6_addr, 16);
return 16 + cw_put_elem_hdr(dst, id, 16);
}
}
cw_log(DBG_MSG_ERR, "Can't determine CAPWAP Local IP Adress");
return 0;
}