Skip to content
This repository

HTTPS clone URL

Subversion checkout URL

You can clone with HTTPS or Subversion.

Download ZIP
tag: curl-7_2
Fetching contributors…

Cannot retrieve contributors at this time

file 177 lines (161 sloc) 5.284 kb
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177
/*****************************************************************************
* _ _ ____ _
* 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@haxx.se>
*
* http://curl.haxx.se
*
* $Source$
* $Revision$
* $Date$
* $Author$
* $State$
* $Locker$
*
* ------------------------------------------------------------
****************************************************************************/

#include "setup.h"

#include <string.h>
#include <malloc.h>
#include <errno.h>

#define _REENTRANT

#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
#ifdef HAVE_NETINET_IN_H
#include <netinet/in.h>
#endif
#ifdef HAVE_NETDB_H
#include <netdb.h>
#endif
#ifdef HAVE_ARPA_INET_H
#include <arpa/inet.h>
#endif
#endif

#include "urldata.h"
#include "sendf.h"

#if defined(HAVE_INET_NTOA_R) && !defined(HAVE_INET_NTOA_R_DECL)
#include "inet_ntoa_r.h"
#endif

/* --- resolve name or IP-number --- */

char *MakeIP(unsigned long num,char *addr, int addr_len)
{
#if defined(HAVE_INET_NTOA) || defined(HAVE_INET_NTOA_R)
  struct in_addr in;
  in.s_addr = htonl(num);

#if defined(HAVE_INET_NTOA_R)
  inet_ntoa_r(in,addr,addr_len);
#else
  strncpy(addr,inet_ntoa(in),addr_len);
#endif
#else
  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]);
#endif
  return (addr);
}

/* The original code to this function was stolen from the Dancer source code,
written by Bjorn Reese, it has since been patched and modified. */
#ifndef INADDR_NONE
#define INADDR_NONE (unsigned long) ~0
#endif
struct hostent *GetHost(struct UrlData *data,
                        char *hostname,
                        char *buf,
                        int buf_size )
{
  struct hostent *h = NULL;
  unsigned long in;
  int ret;

  if ( (in=inet_addr(hostname)) != INADDR_NONE ) {
    struct in_addr *addrentry;

    h = (struct hostent*)buf;
    h->h_addr_list = (char**)(buf + sizeof(*h));
    addrentry = (struct in_addr*)(h->h_addr_list + 2);
    addrentry->s_addr = in;
    h->h_addr_list[0] = (char*)addrentry;
    h->h_addr_list[1] = NULL;
    h->h_addrtype = AF_INET;
    h->h_length = sizeof(*addrentry);
    h->h_name = *(h->h_addr_list) + h->h_length;
    /* bad one h->h_name = (char*)(h->h_addr_list + h->h_length); */
    MakeIP(ntohl(in),h->h_name,buf_size - (long)(h->h_name) + (long)buf);
  }
#if defined(HAVE_GETHOSTBYNAME_R)
  else {
    int h_errnop;
    memset(buf,0,buf_size); /* workaround for gethostbyname_r bug in qnx nto */
#ifdef HAVE_GETHOSTBYNAME_R_5
    /* Solaris, IRIX and more */
    if ((h = gethostbyname_r(hostname,
                             (struct hostent *)buf,
                             buf + sizeof(struct hostent),
                             buf_size - sizeof(struct hostent),
                             &h_errnop)) == NULL )
#endif
#ifdef HAVE_GETHOSTBYNAME_R_6
    /* Linux */
    if( gethostbyname_r(hostname,
                        (struct hostent *)buf,
                        buf + sizeof(struct hostent),
                        buf_size - sizeof(struct hostent),
                        &h, /* DIFFERENCE */
                        &h_errnop))
#endif
#ifdef HAVE_GETHOSTBYNAME_R_3
    /* AIX, Digital Unix, HPUX 10, more? */

    /* August 4th, 2000. I don't have any such system around so I write this
blindly in hope it might work or that someone else will help me fix
this. August 22nd, 2000: Albert Chin-A-Young brought an updated version
that should work! */

    ret = gethostbyname_r(hostname,
                        (struct hostent *)buf,
                        (struct hostent_data *)(buf + sizeof(struct hostent)));

    /* result expected in h */
    h = (struct hostent*)buf;
    h_errnop= errno; /* we don't deal with this, but set it anyway */
    if(ret)
#endif
      {
      infof(data, "gethostbyname_r(2) failed for %s\n", hostname);
    }
#else
  else {
    if ((h = gethostbyname(hostname)) == NULL ) {
      infof(data, "gethostbyname(2) failed for %s\n", hostname);
    }
#endif
  }
  return (h);
}
Something went wrong with that request. Please try again.