/*************************************************************************** * _ _ ____ _ * 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: curl_sspi.c,v 1.3 2009-04-21 11:46:16 yangtse Exp $ ***************************************************************************/ #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 "curl_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 executed, 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 */