curl/lib/hostip.c
1999-12-29 14:20:26 +00:00

112 lines
3.0 KiB
C

/*****************************************************************************
* _ _ ____ _
* Project ___| | | | _ \| |
* / __| | | | |_) | |
* | (__| |_| | _ <| |___
* \___|\___/|_| \_\_____|
*
* The contents of this file are subject to the Mozilla Public License
* Version 1.0 (the "License"); you may not use this file except in
* compliance with the License. You may obtain a copy of the License at
* http://www.mozilla.org/MPL/
*
* Software distributed under the License is distributed on an "AS IS"
* basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See the
* License for the specific language governing rights and limitations
* under the License.
*
* The Original Code is Curl.
*
* The Initial Developer of the Original Code is Daniel Stenberg.
*
* Portions created by the Initial Developer are Copyright (C) 1998.
* All Rights Reserved.
*
* ------------------------------------------------------------
* Main author:
* - Daniel Stenberg <Daniel.Stenberg@haxx.nu>
*
* http://curl.haxx.nu
*
* $Source$
* $Revision$
* $Date$
* $Author$
* $State$
* $Locker$
*
* ------------------------------------------------------------
****************************************************************************/
#include <string.h>
#include "setup.h"
#if defined(WIN32) && !defined(__GNUC__) || defined(__MINGW32__)
#include <winsock.h>
#else
#ifdef HAVE_SYS_TYPES_H
#include <sys/types.h>
#endif
#ifdef HAVE_SYS_SOCKET_H
#include <sys/socket.h>
#endif
#include <netinet/in.h>
#include <netdb.h>
#ifdef HAVE_ARPA_INET_H
#include <arpa/inet.h>
#endif
#endif
#include "urldata.h"
#include "sendf.h"
/* --- resolve name or IP-number --- */
char *MakeIP(unsigned long num)
{
#ifdef HAVE_INET_NTOA
struct in_addr in;
in.s_addr = htonl(num);
return (inet_ntoa(in));
#else
static char addr[128];
unsigned char *paddr;
num = htonl(num); /* htonl() added to avoid endian probs */
paddr = (unsigned char *)&num;
sprintf(addr, "%u.%u.%u.%u", paddr[0], paddr[1], paddr[2], paddr[3]);
return (addr);
#endif
}
/* Stolen from Dancer source code, written by
Bjorn Reese <breese@imada.ou.dk> */
#ifndef INADDR_NONE
#define INADDR_NONE (unsigned long) ~0
#endif
struct hostent *GetHost(struct UrlData *data, char *hostname)
{
struct hostent *h = NULL;
unsigned long in;
static struct hostent he;
static char name[MAXHOSTNAMELEN];
static char *addrlist[2];
static struct in_addr addrentry;
if ( (in=inet_addr(hostname)) != INADDR_NONE ) {
addrentry.s_addr = in;
addrlist[0] = (char *)&addrentry;
addrlist[1] = NULL;
he.h_name = strncpy(name, MakeIP(ntohl(in)), MAXHOSTNAMELEN);
he.h_addrtype = AF_INET;
he.h_length = sizeof(struct in_addr);
he.h_addr_list = addrlist;
h = &he;
} else if ( (h=gethostbyname(hostname)) == NULL ) {
infof(data, "gethostbyname(2) failed for %s\n", hostname);
}
return (h);
}