/*************************************************************************** * _ _ ____ _ * Project ___| | | | _ \| | * / __| | | | |_) | | * | (__| |_| | _ <| |___ * \___|\___/|_| \_\_____| * * Copyright (C) 2016 - 2017, Steve Holme, . * * 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 https://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 "curl_setup.h" #if defined(WIN32) #include #include "system_win32.h" /* The last #include files should be: */ #include "curl_memory.h" #include "memdebug.h" #if defined(USE_WINDOWS_SSPI) || (!defined(CURL_DISABLE_TELNET) && \ defined(USE_WINSOCK)) #if !defined(LOAD_WITH_ALTERED_SEARCH_PATH) #define LOAD_WITH_ALTERED_SEARCH_PATH 0x00000008 #endif #if !defined(LOAD_LIBRARY_SEARCH_SYSTEM32) #define LOAD_LIBRARY_SEARCH_SYSTEM32 0x00000800 #endif /* We use our own typedef here since some headers might lack these */ typedef HMODULE (APIENTRY *LOADLIBRARYEX_FN)(LPCTSTR, HANDLE, DWORD); /* See function definitions in winbase.h */ #ifdef UNICODE # ifdef _WIN32_WCE # define LOADLIBARYEX L"LoadLibraryExW" # else # define LOADLIBARYEX "LoadLibraryExW" # endif #else # define LOADLIBARYEX "LoadLibraryExA" #endif #endif /* USE_WINDOWS_SSPI || (!CURL_DISABLE_TELNET && USE_WINSOCK) */ /* * Curl_verify_windows_version() * * This is used to verify if we are running on a specific windows version. * * Parameters: * * majorVersion [in] - The major version number. * minorVersion [in] - The minor version number. * platform [in] - The optional platform identifier. * condition [in] - The test condition used to specifier whether we are * checking a version less then, equal to or greater than * what is specified in the major and minor version * numbers. * * Returns TRUE if matched; otherwise FALSE. */ bool Curl_verify_windows_version(const unsigned int majorVersion, const unsigned int minorVersion, const PlatformIdentifier platform, const VersionCondition condition) { bool matched = FALSE; #if defined(CURL_WINDOWS_APP) /* We have no way to determine the Windows version from Windows apps, so let's assume we're running on the target Windows version. */ const WORD fullVersion = MAKEWORD(minorVersion, majorVersion); const WORD targetVersion = (WORD)_WIN32_WINNT; switch(condition) { case VERSION_LESS_THAN: matched = targetVersion < fullVersion; break; case VERSION_LESS_THAN_EQUAL: matched = targetVersion <= fullVersion; break; case VERSION_EQUAL: matched = targetVersion == fullVersion; break; case VERSION_GREATER_THAN_EQUAL: matched = targetVersion >= fullVersion; break; case VERSION_GREATER_THAN: matched = targetVersion > fullVersion; break; } if(matched && (platform == PLATFORM_WINDOWS)) { /* we're always running on PLATFORM_WINNT */ matched = FALSE; } #elif !defined(_WIN32_WINNT) || !defined(_WIN32_WINNT_WIN2K) || \ (_WIN32_WINNT < _WIN32_WINNT_WIN2K) OSVERSIONINFO osver; memset(&osver, 0, sizeof(osver)); osver.dwOSVersionInfoSize = sizeof(osver); /* Find out Windows version */ if(GetVersionEx(&osver)) { /* Verify the Operating System version number */ switch(condition) { case VERSION_LESS_THAN: if(osver.dwMajorVersion < majorVersion || (osver.dwMajorVersion == majorVersion && osver.dwMinorVersion < minorVersion)) matched = TRUE; break; case VERSION_LESS_THAN_EQUAL: if(osver.dwMajorVersion <= majorVersion && osver.dwMinorVersion <= minorVersion) matched = TRUE; break; case VERSION_EQUAL: if(osver.dwMajorVersion == majorVersion && osver.dwMinorVersion == minorVersion) matched = TRUE; break; case VERSION_GREATER_THAN_EQUAL: if(osver.dwMajorVersion >= majorVersion && osver.dwMinorVersion >= minorVersion) matched = TRUE; break; case VERSION_GREATER_THAN: if(osver.dwMajorVersion > majorVersion || (osver.dwMajorVersion == majorVersion && osver.dwMinorVersion > minorVersion)) matched = TRUE; break; } /* Verify the platform identifier (if necessary) */ if(matched) { switch(platform) { case PLATFORM_WINDOWS: if(osver.dwPlatformId != VER_PLATFORM_WIN32_WINDOWS) matched = FALSE; break; case PLATFORM_WINNT: if(osver.dwPlatformId != VER_PLATFORM_WIN32_NT) matched = FALSE; default: /* like platform == PLATFORM_DONT_CARE */ break; } } } #else ULONGLONG cm = 0; OSVERSIONINFOEX osver; BYTE majorCondition; BYTE minorCondition; BYTE spMajorCondition; BYTE spMinorCondition; switch(condition) { case VERSION_LESS_THAN: majorCondition = VER_LESS; minorCondition = VER_LESS; spMajorCondition = VER_LESS_EQUAL; spMinorCondition = VER_LESS_EQUAL; break; case VERSION_LESS_THAN_EQUAL: majorCondition = VER_LESS_EQUAL; minorCondition = VER_LESS_EQUAL; spMajorCondition = VER_LESS_EQUAL; spMinorCondition = VER_LESS_EQUAL; break; case VERSION_EQUAL: majorCondition = VER_EQUAL; minorCondition = VER_EQUAL; spMajorCondition = VER_GREATER_EQUAL; spMinorCondition = VER_GREATER_EQUAL; break; case VERSION_GREATER_THAN_EQUAL: majorCondition = VER_GREATER_EQUAL; minorCondition = VER_GREATER_EQUAL; spMajorCondition = VER_GREATER_EQUAL; spMinorCondition = VER_GREATER_EQUAL; break; case VERSION_GREATER_THAN: majorCondition = VER_GREATER; minorCondition = VER_GREATER; spMajorCondition = VER_GREATER_EQUAL; spMinorCondition = VER_GREATER_EQUAL; break; default: return FALSE; } memset(&osver, 0, sizeof(osver)); osver.dwOSVersionInfoSize = sizeof(osver); osver.dwMajorVersion = majorVersion; osver.dwMinorVersion = minorVersion; if(platform == PLATFORM_WINDOWS) osver.dwPlatformId = VER_PLATFORM_WIN32_WINDOWS; else if(platform == PLATFORM_WINNT) osver.dwPlatformId = VER_PLATFORM_WIN32_NT; cm = VerSetConditionMask(cm, VER_MAJORVERSION, majorCondition); cm = VerSetConditionMask(cm, VER_MINORVERSION, minorCondition); cm = VerSetConditionMask(cm, VER_SERVICEPACKMAJOR, spMajorCondition); cm = VerSetConditionMask(cm, VER_SERVICEPACKMINOR, spMinorCondition); if(platform != PLATFORM_DONT_CARE) cm = VerSetConditionMask(cm, VER_PLATFORMID, VER_EQUAL); if(VerifyVersionInfo(&osver, (VER_MAJORVERSION | VER_MINORVERSION | VER_SERVICEPACKMAJOR | VER_SERVICEPACKMINOR), cm)) matched = TRUE; #endif return matched; } #if defined(USE_WINDOWS_SSPI) || (!defined(CURL_DISABLE_TELNET) && \ defined(USE_WINSOCK)) /* * Curl_load_library() * * This is used to dynamically load DLLs using the most secure method available * for the version of Windows that we are running on. * * Parameters: * * filename [in] - The filename or full path of the DLL to load. If only the * filename is passed then the DLL will be loaded from the * Windows system directory. * * Returns the handle of the module on success; otherwise NULL. */ HMODULE Curl_load_library(LPCTSTR filename) { HMODULE hModule = NULL; LOADLIBRARYEX_FN pLoadLibraryEx = NULL; /* Get a handle to kernel32 so we can access it's functions at runtime */ HMODULE hKernel32 = GetModuleHandle(TEXT("kernel32")); if(!hKernel32) return NULL; /* Attempt to find LoadLibraryEx() which is only available on Windows 2000 and above */ pLoadLibraryEx = (LOADLIBRARYEX_FN) GetProcAddress(hKernel32, LOADLIBARYEX); /* Detect if there's already a path in the filename and load the library if there is. Note: Both back slashes and forward slashes have been supported since the earlier days of DOS at an API level although they are not supported by command prompt */ if(_tcspbrk(filename, TEXT("\\/"))) { /** !checksrc! disable BANNEDFUNC 1 **/ hModule = pLoadLibraryEx ? pLoadLibraryEx(filename, NULL, LOAD_WITH_ALTERED_SEARCH_PATH) : LoadLibrary(filename); } /* Detect if KB2533623 is installed, as LOAD_LIBARY_SEARCH_SYSTEM32 is only supported on Windows Vista, Windows Server 2008, Windows 7 and Windows Server 2008 R2 with this patch or natively on Windows 8 and above */ else if(pLoadLibraryEx && GetProcAddress(hKernel32, "AddDllDirectory")) { /* Load the DLL from the Windows system directory */ hModule = pLoadLibraryEx(filename, NULL, LOAD_LIBRARY_SEARCH_SYSTEM32); } else { /* Attempt to get the Windows system path */ UINT systemdirlen = GetSystemDirectory(NULL, 0); if(systemdirlen) { /* Allocate space for the full DLL path (Room for the null terminator is included in systemdirlen) */ size_t filenamelen = _tcslen(filename); TCHAR *path = malloc(sizeof(TCHAR) * (systemdirlen + 1 + filenamelen)); if(path && GetSystemDirectory(path, systemdirlen)) { /* Calculate the full DLL path */ _tcscpy(path + _tcslen(path), TEXT("\\")); _tcscpy(path + _tcslen(path), filename); /* Load the DLL from the Windows system directory */ /** !checksrc! disable BANNEDFUNC 1 **/ hModule = pLoadLibraryEx ? pLoadLibraryEx(path, NULL, LOAD_WITH_ALTERED_SEARCH_PATH) : LoadLibrary(path); } free(path); } } return hModule; } #endif /* USE_WINDOWS_SSPI || (!CURL_DISABLE_TELNET && USE_WINSOCK) */ #endif /* WIN32 */