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/*
* ffproxy (c) 2002, 2003 Niklas Olmes <niklas@noxa.de>
* http://faith.eu.org
*
* $Id: dns.c,v 2.1 2004/12/31 08:59:15 niklas Exp $
*
* This program 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 2 of the License, or (at your option)
* any later version.
*
* This program 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
* this program; if not, write to the Free Software Foundation, Inc., 675
* Mass Ave, Cambridge, MA 02139, USA.
*/
#include "configure.h"
#ifdef HAVE_SYS_TYPES_H
# include <sys/types.h>
#endif
#ifdef HAVE_SYS_SOCKET_H
# include <sys/socket.h>
#endif
#ifdef HAVE_NETINET_IN_H
# include <netinet/in.h>
#endif
#ifdef HAVE_ARPA_INET_H
# include <arpa/inet.h>
#endif
#include <stdio.h>
#include <string.h>
#ifdef HAVE_NETDB_H
# include <netdb.h>
#endif
#include "req.h"
#include "alloc.h"
#include "print.h"
#include "dns.h"
static char *ip_to_a(in_addr_t);
in_addr_t
resolve(const char *h)
{
struct hostent *hp;
in_addr_t ip;
if ((ip = inet_addr(h)) != INADDR_NONE)
return ip;
if ((hp = gethostbyname(h)) == NULL)
return INADDR_NONE;
else {
(void) memcpy(&ip, hp->h_addr, hp->h_length);
return ip;
}
}
static char *
ip_to_a(in_addr_t ip)
{
char *p;
struct in_addr addr;
addr.s_addr = ip;
p = inet_ntoa(addr);
return p;
}
char *
resolve_to_a(const char *h)
{
char *p;
p = ip_to_a(resolve(h));
return p;
}
struct clinfo *
identify(const struct sockaddr * addr, socklen_t salen)
{
struct clinfo *host;
host = (struct clinfo *) my_alloc(sizeof(struct clinfo));
(void) memset(host, 0, sizeof(struct clinfo));
if (getnameinfo(addr, salen, host->name, sizeof(host->name), NULL, 0, NI_NAMEREQD))
*host->name = '\0';
DEBUG(("identify() => getnameinfo() for Reverse Name returned (%s)", host->name));
if (getnameinfo(addr, salen, host->ip, sizeof(host->ip), NULL, 0, NI_NUMERICHOST))
*host->ip = '\0';
DEBUG(("identify() => getnameinfo() for IP Address returned (%s)", host->ip));
return host;
}
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