easy.c

/***************************************************************************
 *                                  _   _ ____  _
 *  Project                     ___| | | |  _ \| |
 *                             / __| | | | |_) | |
 *                            | (__| |_| |  _ <| |___
 *                             \___|\___/|_| \_\_____|
 *
 * Copyright (C) 1998 - 2010, Daniel Stenberg, <daniel@haxx.se>, et al.
 *
 * This software is licensed as described in the file COPYING, which
 * you should have received as part of this distribution. The terms
 * are also available at http://curl.haxx.se/docs/copyright.html.
 *
 * You may opt to use, copy, modify, merge, publish, distribute and/or sell
 * copies of the Software, and permit persons to whom the Software is
 * furnished to do so, under the terms of the COPYING file.
 *
 * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
 * KIND, either express or implied.
 *
 ***************************************************************************/

#include "setup.h"

/* -- WIN32 approved -- */
#include <stdio.h>
#include <string.h>
#include <stdarg.h>
#include <stdlib.h>
#include <ctype.h>
#include <errno.h>

#include "strequal.h"

#ifdef WIN32
#include <time.h>
#include <io.h>
#else
#ifdef HAVE_SYS_SOCKET_H
#include <sys/socket.h>
#endif
#ifdef HAVE_NETINET_IN_H
#include <netinet/in.h>
#endif
#ifdef HAVE_SYS_TIME_H
#include <sys/time.h>
#endif
#ifdef HAVE_UNISTD_H
#include <unistd.h>
#endif
#ifdef HAVE_NETDB_H
#include <netdb.h>
#endif
#ifdef HAVE_ARPA_INET_H
#include <arpa/inet.h>
#endif
#ifdef HAVE_NET_IF_H
#include <net/if.h>
#endif
#ifdef HAVE_SYS_IOCTL_H
#include <sys/ioctl.h>
#endif

#ifdef HAVE_SYS_PARAM_H
#include <sys/param.h>
#endif

#endif  /* WIN32 ... */

#include "urldata.h"
#include <curl/curl.h>
#include "transfer.h"
#include "sslgen.h"
#include "url.h"
#include "getinfo.h"
#include "hostip.h"
#include "share.h"
#include "strdup.h"
#include "curl_memory.h"
#include "progress.h"
#include "easyif.h"
#include "select.h"
#include "sendf.h" /* for failf function prototype */
#include "http_ntlm.h"
#include "connect.h" /* for Curl_getconnectinfo */
#include "slist.h"
#include "curl_rand.h"

#define _MPRINTF_REPLACE /* use our functions only */
#include <curl/mprintf.h>

#if defined(CURL_DOES_CONVERSIONS) && defined(HAVE_ICONV)
#include <iconv.h>
/* set default codesets for iconv */
#ifndef CURL_ICONV_CODESET_OF_NETWORK
#define CURL_ICONV_CODESET_OF_NETWORK "ISO8859-1"
#endif
#ifndef CURL_ICONV_CODESET_FOR_UTF8
#define CURL_ICONV_CODESET_FOR_UTF8   "UTF-8"
#endif
#define ICONV_ERROR  (size_t)-1
#endif /* CURL_DOES_CONVERSIONS && HAVE_ICONV */

/* The last #include file should be: */
#include "memdebug.h"

/* win32_cleanup() is for win32 socket cleanup functionality, the opposite
   of win32_init() */
static void win32_cleanup(void)
{
#ifdef USE_WINSOCK
  WSACleanup();
#endif
#ifdef USE_WINDOWS_SSPI
  Curl_sspi_global_cleanup();
#endif
}

/* win32_init() performs win32 socket initialization to properly setup the
   stack to allow networking */
static CURLcode win32_init(void)
{
#ifdef USE_WINSOCK
  WORD wVersionRequested;
  WSADATA wsaData;
  int res;

#if defined(ENABLE_IPV6) && (USE_WINSOCK < 2)
  Error IPV6_requires_winsock2
#endif

  wVersionRequested = MAKEWORD(USE_WINSOCK, USE_WINSOCK);

  res = WSAStartup(wVersionRequested, &wsaData);

  if(res != 0)
    /* Tell the user that we couldn't find a useable */
    /* winsock.dll.     */
    return CURLE_FAILED_INIT;

  /* Confirm that the Windows Sockets DLL supports what we need.*/
  /* Note that if the DLL supports versions greater */
  /* than wVersionRequested, it will still return */
  /* wVersionRequested in wVersion. wHighVersion contains the */
  /* highest supported version. */

  if( LOBYTE( wsaData.wVersion ) != LOBYTE(wVersionRequested) ||
       HIBYTE( wsaData.wVersion ) != HIBYTE(wVersionRequested) ) {
    /* Tell the user that we couldn't find a useable */

    /* winsock.dll. */
    WSACleanup();
    return CURLE_FAILED_INIT;
  }
  /* The Windows Sockets DLL is acceptable. Proceed. */
#endif

#ifdef USE_WINDOWS_SSPI
  {
    CURLcode err = Curl_sspi_global_init();
    if (err != CURLE_OK)
      return err;
  }
#endif

  return CURLE_OK;
}

#ifdef USE_LIBIDN
/*
 * Initialise use of IDNA library.
 * It falls back to ASCII if $CHARSET isn't defined. This doesn't work for
 * idna_to_ascii_lz().
 */
static void idna_init (void)
{
#ifdef WIN32
  char buf[60];
  UINT cp = GetACP();

  if(!getenv("CHARSET") && cp > 0) {
    snprintf(buf, sizeof(buf), "CHARSET=cp%u", cp);
    putenv(buf);
  }
#else
  /* to do? */
#endif
}
#endif  /* USE_LIBIDN */

/* true globals -- for curl_global_init() and curl_global_cleanup() */
static unsigned int  initialized;
static long          init_flags;

/*
 * strdup (and other memory functions) is redefined in complicated
 * ways, but at this point it must be defined as the system-supplied strdup
 * so the callback pointer is initialized correctly.
 */
#if defined(_WIN32_WCE)