154 строки
4.8 KiB
C
154 строки
4.8 KiB
C
/***************************************************************************
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* _ _ ____ _
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* Project ___| | | | _ \| |
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* / __| | | | |_) | |
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* | (__| |_| | _ <| |___
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* \___|\___/|_| \_\_____|
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*
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* Copyright (C) 1998 - 2012, Daniel Stenberg, <daniel@haxx.se>, et al.
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*
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* This software is licensed as described in the file COPYING, which
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* you should have received as part of this distribution. The terms
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* are also available at http://curl.haxx.se/docs/copyright.html.
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*
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* You may opt to use, copy, modify, merge, publish, distribute and/or sell
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* copies of the Software, and permit persons to whom the Software is
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* furnished to do so, under the terms of the COPYING file.
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*
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* This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
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* KIND, either express or implied.
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*
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***************************************************************************/
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#include "curl_setup.h"
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#ifdef USE_WINDOWS_SSPI
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#include <curl/curl.h>
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#include "curl_sspi.h"
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#define _MPRINTF_REPLACE /* use our functions only */
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#include <curl/mprintf.h>
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#include "curl_memory.h"
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/* The last #include file should be: */
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#include "memdebug.h"
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/* We use our own typedef here since some headers might lack these */
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typedef PSecurityFunctionTable (APIENTRY *INITSECURITYINTERFACE_FN)(VOID);
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/* See definition of SECURITY_ENTRYPOINT in sspi.h */
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#ifdef UNICODE
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# ifdef _WIN32_WCE
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# define SECURITYENTRYPOINT L"InitSecurityInterfaceW"
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# else
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# define SECURITYENTRYPOINT "InitSecurityInterfaceW"
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# endif
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#else
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# define SECURITYENTRYPOINT "InitSecurityInterfaceA"
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#endif
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/* Handle of security.dll or secur32.dll, depending on Windows version */
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HMODULE s_hSecDll = NULL;
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/* Pointer to SSPI dispatch table */
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PSecurityFunctionTable s_pSecFn = NULL;
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/*
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* Curl_sspi_global_init()
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*
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* This is used to load the Security Service Provider Interface (SSPI)
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* dynamic link library portably across all Windows versions, without
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* the need to directly link libcurl, nor the application using it, at
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* build time.
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*
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* Once this function has been executed, Windows SSPI functions can be
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* called through the Security Service Provider Interface dispatch table.
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*/
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CURLcode Curl_sspi_global_init(void)
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{
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bool securityDll = FALSE;
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INITSECURITYINTERFACE_FN pInitSecurityInterface;
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/* If security interface is not yet initialized try to do this */
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if(!s_hSecDll) {
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/* Security Service Provider Interface (SSPI) functions are located in
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* security.dll on WinNT 4.0 and in secur32.dll on Win9x. Win2K and XP
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* have both these DLLs (security.dll forwards calls to secur32.dll) */
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DWORD majorVersion = 4;
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DWORD platformId = VER_PLATFORM_WIN32_NT;
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#if !defined(_WIN32_WINNT) || !defined(_WIN32_WINNT_WIN2K) || \
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(_WIN32_WINNT < _WIN32_WINNT_WIN2K)
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OSVERSIONINFO osver;
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memset(&osver, 0, sizeof(osver));
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osver.dwOSVersionInfoSize = sizeof(osver);
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/* Find out Windows version */
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if(!GetVersionEx(&osver))
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return CURLE_FAILED_INIT;
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/* Verify the major version number == 4 and platform id == WIN_NT */
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if(osver.dwMajorVersion == majorVersion &&
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osver.dwPlatformId == platformId)
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securityDll = TRUE;
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#else
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ULONGLONG majorVersionMask;
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ULONGLONG platformIdMask;
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OSVERSIONINFOEX osver;
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memset(&osver, 0, sizeof(osver));
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osver.dwOSVersionInfoSize = sizeof(osver);
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osver.dwMajorVersion = majorVersion;
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osver.dwPlatformId = platformId;
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majorVersionMask = VerSetConditionMask(0, VER_MAJORVERSION, VER_EQUAL);
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platformIdMask = VerSetConditionMask(0, VER_PLATFORMID, VER_EQUAL);
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/* Verify the major version number == 4 and platform id == WIN_NT */
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if(VerifyVersionInfo(&osver, VER_MAJORVERSION, majorVersionMask) &&
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VerifyVersionInfo(&osver, VER_PLATFORMID, platformIdMask))
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securityDll = TRUE;
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#endif
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/* Load SSPI dll into the address space of the calling process */
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if(securityDll)
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s_hSecDll = LoadLibrary(TEXT("security.dll"));
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else
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s_hSecDll = LoadLibrary(TEXT("secur32.dll"));
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if(!s_hSecDll)
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return CURLE_FAILED_INIT;
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/* Get address of the InitSecurityInterfaceA function from the SSPI dll */
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pInitSecurityInterface = (INITSECURITYINTERFACE_FN)
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GetProcAddress(s_hSecDll, SECURITYENTRYPOINT);
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if(!pInitSecurityInterface)
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return CURLE_FAILED_INIT;
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/* Get pointer to Security Service Provider Interface dispatch table */
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s_pSecFn = pInitSecurityInterface();
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if(!s_pSecFn)
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return CURLE_FAILED_INIT;
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}
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return CURLE_OK;
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}
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/*
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* Curl_sspi_global_cleanup()
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*
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* This deinitializes the Security Service Provider Interface from libcurl.
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*/
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void Curl_sspi_global_cleanup(void)
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{
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if(s_hSecDll) {
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FreeLibrary(s_hSecDll);
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s_hSecDll = NULL;
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s_pSecFn = NULL;
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}
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}
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#endif /* USE_WINDOWS_SSPI */
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