actube/src/cw/sock_addrtostr.c

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/*
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;
}
/**
* @}
*/