actube/src/cw/sock_addrtostr.c

/*
    This file is part of actube.

    actube 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 implements sock_addrtostr
 */

/**
 * @addtogroup sock
 * @{
 */

#include <string.h>
#include <stdio.h>

#include <sys/types.h>
#include <sys/socket.h>
#include <arpa/inet.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"

/**
 * Convert a struct sockaddr int to a human readable string.
 * @param sa sockaddr to convert
 * @param s Destination buffer
 * @param maxlen Size of destination buffer
 * @param addport If true then the port number wil be added to the output
 *
 * Works only for sockaddrs of type AF_INET, AF_INET6, AF_PACKET, AF_LINK.
 */
char *sock_addrtostr(const struct sockaddr *sa, char *s, size_t maxlen, int addport)
{
	char d[512];
	int port;


	switch (sa->sa_family) {
		case AF_INET:
			inet_ntop(AF_INET, &(((struct sockaddr_in *) sa)->sin_addr), d,
				  maxlen);
			if (addport) {
				port = ((struct sockaddr_in *) sa)->sin_port;
				sprintf(s, "%s:%i", d, ntohs(port));
			} else
				sprintf(s, "%s", d);
			break;

		case AF_INET6:
			inet_ntop(AF_INET6, &(((struct sockaddr_in6 *) sa)->sin6_addr), d,
				  maxlen);
			if (addport) {
				port = ((struct sockaddr_in6 *) sa)->sin6_port;
				sprintf(s, "[%s]:%i", d, ntohs(port));
			} else
				sprintf(s, "%s", d);
			break;
#ifdef AF_LINK
		case AF_LINK:
		{
			struct sockaddr_dl *sl = (struct sockaddr_dl *) sa;
			sock_hwaddrtostr(((uint8_t *) sl->sdl_data) + sl->sdl_nlen,
					 sl->sdl_alen, s, ":");

		}
			break;

#endif				/* AF_LINLK */

#ifdef AF_PACKET
		case AF_PACKET:
		{
			int i;
			char *sp = s;
			struct sockaddr_ll *sl = (struct sockaddr_ll *) sa;
			for (i = 0; i < sl->sll_halen - 1; i++) {
				sprintf(sp, "%02X:", sl->sll_addr[i]);
				sp += 3;
			}
			sprintf(sp, "%02X", sl->sll_addr[i]);
		}
			break;
#endif				/* AF_PACKET */


		default:
			strncpy(s, "Unknown AF", maxlen);
			return NULL;
	}
	return s;
}

/**
 * @}
 */