Introduced curl_sspi.c and curl_sspi.h for the implementation of functions

                                  Changelog

Yang Tse (29 Jan 2009)

- Introduced curl_sspi.c and curl_sspi.h for the implementation of functions

  Curl_sspi_global_init() and Curl_sspi_global_cleanup() which previously were

  named Curl_ntlm_global_init() and Curl_ntlm_global_cleanup() in http_ntlm.c

  Also adjusted socks_sspi.c to remove the link-time dependency on the Windows

  SSPI library using it now in the same way as it was done in http_ntlm.c.

Daniel Stenberg (28 Jan 2009)

- Markus Moeller introduced two new options to libcurl:

  CURLOPT_SOCKS5_GSSAPI_SERVICE and CURLOPT_SOCKS5_GSSAPI_NEC to allow libcurl

  hostares.c hostasyn.c hostip4.c hostip6.c hostsyn.c hostthre.c	\

  inet_ntop.c parsedate.c select.c gtls.c sslgen.c tftp.c splay.c	\

  strdup.c socks.c ssh.c nss.c qssl.c rawstr.c curl_addrinfo.c          \

  socks_gssapi.c socks_sspi.c

  socks_gssapi.c socks_sspi.c curl_sspi.c

HHEADERS = arpa_telnet.h netrc.h file.h timeval.h qssl.h hostip.h	\

  progress.h formdata.h cookie.h http.h sendf.h ftp.h url.h dict.h	\

  strtoofft.h strerror.h inet_ntop.h curlx.h memory.h setup.h		\

  transfer.h select.h easyif.h multiif.h parsedate.h sslgen.h gtls.h	\

  tftp.h sockaddr.h splay.h strdup.h setup_once.h socks.h ssh.h nssg.h	\

  curl_base64.h rawstr.h curl_addrinfo.h

  curl_base64.h rawstr.h curl_addrinfo.h curl_sspi.h

SSLLIBS    = libeay32.lib ssleay32.lib

ZLIBLIBSDLL= zdll.lib

ZLIBLIBS   = zlib.lib

WINLIBS    = wsock32.lib wldap32.lib secur32.lib

WINLIBS    = wsock32.lib wldap32.lib

CFLAGS     = $(CFLAGS)

CFGSET     = FALSE

	$(DIROBJ)\content_encoding.obj \

	$(DIROBJ)\cookie.obj \

	$(DIROBJ)\curl_addrinfo.obj \

	$(DIROBJ)\curl_sspi.obj \

	$(DIROBJ)\dict.obj \

	$(DIROBJ)\easy.obj \

	$(DIROBJ)\escape.obj \

/***************************************************************************

 *                                  _   _ ____  _

 *  Project                     ___| | | |  _ \| |

 *                             / __| | | | |_) | |

 *                            | (__| |_| |  _ <| |___

 *                             \___|\___/|_| \_\_____|

 *

 * Copyright (C) 1998 - 2009, 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.

 *

 * $Id$

 ***************************************************************************/

#include "setup.h"

#ifdef USE_WINDOWS_SSPI

#include <curl/curl.h>

#include "curl_sspi.h"

#define _MPRINTF_REPLACE /* use our functions only */

#include <curl/mprintf.h>

#include "memory.h"

/* The last #include file should be: */

#include "memdebug.h"

/* Handle of security.dll or secur32.dll, depending on Windows version */

HMODULE s_hSecDll = NULL;

/* Pointer to SSPI dispatch table */

PSecurityFunctionTableA s_pSecFn = NULL;

/*

 * Curl_sspi_global_init()

 *

 * This is used to load the Security Service Provider Interface (SSPI)

 * dynamic link library portably across all Windows versions, without

 * the need to directly link libcurl, nor the application using it, at

 * build time.

 *

 * Once this function has been execured, Windows SSPI functions can be

 * called through the Security Service Provider Interface dispatch table.

 */

CURLcode

Curl_sspi_global_init(void)

{

  OSVERSIONINFO osver;

  INIT_SECURITY_INTERFACE_A pInitSecurityInterface;

  /* If security interface is not yet initialized try to do this */

  if(s_hSecDll == NULL) {

    /* Find out Windows version */

    memset(&osver, 0, sizeof(osver));

    osver.dwOSVersionInfoSize = sizeof(osver);

    if(! GetVersionEx(&osver))

      return CURLE_FAILED_INIT;

    /* Security Service Provider Interface (SSPI) functions are located in

     * security.dll on WinNT 4.0 and in secur32.dll on Win9x. Win2K and XP

     * have both these DLLs (security.dll forwards calls to secur32.dll) */

    /* Load SSPI dll into the address space of the calling process */

    if(osver.dwPlatformId == VER_PLATFORM_WIN32_NT

      && osver.dwMajorVersion == 4)

      s_hSecDll = LoadLibrary("security.dll");

    else

      s_hSecDll = LoadLibrary("secur32.dll");

    if(! s_hSecDll)

      return CURLE_FAILED_INIT;

    /* Get address of the InitSecurityInterfaceA function from the SSPI dll */

    pInitSecurityInterface = (INIT_SECURITY_INTERFACE_A)

      GetProcAddress(s_hSecDll, "InitSecurityInterfaceA");

    if(! pInitSecurityInterface)

      return CURLE_FAILED_INIT;

    /* Get pointer to Security Service Provider Interface dispatch table */

    s_pSecFn = pInitSecurityInterface();

    if(! s_pSecFn)

      return CURLE_FAILED_INIT;

  }

  return CURLE_OK;

}

/*

 * Curl_sspi_global_cleanup()

 *

 * This deinitializes the Security Service Provider Interface from libcurl.

 */

void

Curl_sspi_global_cleanup(void)

{

  if(s_hSecDll) {

    FreeLibrary(s_hSecDll);

    s_hSecDll = NULL;

    s_pSecFn = NULL;

  }

}

#endif /* USE_WINDOWS_SSPI */

#ifndef HEADER_CURL_SSPI_H

#define HEADER_CURL_SSPI_H

/***************************************************************************

 *                                  _   _ ____  _

 *  Project                     ___| | | |  _ \| |

 *                             / __| | | | |_) | |

 *                            | (__| |_| |  _ <| |___

 *                             \___|\___/|_| \_\_____|

 *

 * Copyright (C) 1998 - 2009, 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.

 *

 * $Id$

 ***************************************************************************/

#include "setup.h"

#ifdef USE_WINDOWS_SSPI

#include <curl/curl.h>

/* 

 * When including the folowing three headers, it is mandatory to define either

 * SECURITY_WIN32 or SECURITY_KERNEL, indicating who is compiling the code.

 */

#undef SECURITY_WIN32

#undef SECURITY_KERNEL

#define SECURITY_WIN32 1

#include <security.h>

#include <sspi.h>

#include <rpc.h>

CURLcode Curl_sspi_global_init(void);

void Curl_sspi_global_cleanup(void);

/* Forward-declaration of global variables defined in curl_sspi.c */

extern HMODULE s_hSecDll;

extern PSecurityFunctionTableA s_pSecFn;

#endif /* USE_WINDOWS_SSPI */

#endif /* HEADER_CURL_SSPI_H */