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Diffstat (limited to 'sal/osl/w32/module.cxx')
-rw-r--r-- | sal/osl/w32/module.cxx | 250 |
1 files changed, 250 insertions, 0 deletions
diff --git a/sal/osl/w32/module.cxx b/sal/osl/w32/module.cxx new file mode 100644 index 000000000..67eeb2df0 --- /dev/null +++ b/sal/osl/w32/module.cxx @@ -0,0 +1,250 @@ +/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */ +/* + * This file is part of the LibreOffice project. + * + * This Source Code Form is subject to the terms of the Mozilla Public + * License, v. 2.0. If a copy of the MPL was not distributed with this + * file, You can obtain one at http://mozilla.org/MPL/2.0/. + * + * This file incorporates work covered by the following license notice: + * + * Licensed to the Apache Software Foundation (ASF) under one or more + * contributor license agreements. See the NOTICE file distributed + * with this work for additional information regarding copyright + * ownership. The ASF licenses this file to you under the Apache + * License, Version 2.0 (the "License"); you may not use this file + * except in compliance with the License. You may obtain a copy of + * the License at http://www.apache.org/licenses/LICENSE-2.0 . + */ + +#include "system.h" +#include <psapi.h> + +#include "file_url.hxx" +#include "path_helper.hxx" + +#include <osl/module.h> +#include <osl/diagnose.h> +#include <osl/thread.h> +#include <osl/file.h> +#include <sal/log.hxx> +#include <o3tl/char16_t2wchar_t.hxx> +#include <vector> + +/* + under WIN32, we use the void* oslModule + as a WIN32 HANDLE (which is also a 32-bit value) +*/ + +oslModule SAL_CALL osl_loadModule(rtl_uString *strModuleName, sal_Int32 /*nRtldMode*/ ) +{ + HMODULE h; +#if OSL_DEBUG_LEVEL < 2 + UINT errorMode = SetErrorMode(SEM_NOOPENFILEERRORBOX | SEM_FAILCRITICALERRORS); +#endif + rtl_uString* Module = nullptr; + oslModule ret = nullptr; + oslFileError nError; + + SAL_INFO( "sal.osl", "osl_loadModule: " << OUString(strModuleName) ); + OSL_ASSERT(strModuleName); + + nError = osl_getSystemPathFromFileURL(strModuleName, &Module); + + if ( osl_File_E_None != nError ) + rtl_uString_assign(&Module, strModuleName); + + h = LoadLibraryW(o3tl::toW(Module->buffer)); + + if (h == nullptr) + h = LoadLibraryExW(o3tl::toW(Module->buffer), nullptr, LOAD_WITH_ALTERED_SEARCH_PATH); + + // In case of long path names (\\?\c:\...) try to shorten the filename. + // LoadLibrary cannot handle file names which exceed 260 letters. + // In case the path is too long, the function will fail. However, the error + // code can be different. For example, it returned ERROR_FILENAME_EXCED_RANGE + // on Windows XP and ERROR_INSUFFICIENT_BUFFER on Windows 7 (64bit) + if (h == nullptr && Module->length > 260) + { + std::vector<WCHAR> vec(Module->length + 1); + DWORD len = GetShortPathNameW(o3tl::toW(Module->buffer), vec.data(), Module->length + 1); + if (len ) + { + h = LoadLibraryW(vec.data()); + + if (h == nullptr) + h = LoadLibraryExW(vec.data(), nullptr, LOAD_WITH_ALTERED_SEARCH_PATH); + } + } + + ret = static_cast<oslModule>(h); + rtl_uString_release(Module); +#if OSL_DEBUG_LEVEL < 2 + SetErrorMode(errorMode); +#endif + + return ret; +} + +oslModule SAL_CALL osl_loadModuleAscii(const char *pModuleName, sal_Int32 ) +{ + HMODULE h; + UINT errorMode = SetErrorMode(SEM_NOOPENFILEERRORBOX | SEM_FAILCRITICALERRORS); + oslModule ret = nullptr; + + SAL_INFO( "sal.osl", "osl_loadModule: " << pModuleName ); + OSL_ASSERT(pModuleName); + + h = LoadLibraryA(pModuleName); + if (h == nullptr) + h = LoadLibraryExA(pModuleName, nullptr, + LOAD_WITH_ALTERED_SEARCH_PATH); + + ret = static_cast<oslModule>(h); + SetErrorMode(errorMode); + + return ret; +} + +oslModule osl_loadModuleRelativeAscii( + oslGenericFunction, char const * relativePath, sal_Int32 mode) +{ + return osl_loadModuleAscii(relativePath, mode); //TODO: FIXME +} + +sal_Bool SAL_CALL +osl_getModuleHandle(rtl_uString *pModuleName, oslModule *pResult) +{ + LPCWSTR pName = pModuleName ? o3tl::toW(pModuleName->buffer) : nullptr; + HMODULE h = GetModuleHandleW(pName); + if( h ) + { + *pResult = static_cast<oslModule>(h); + return true; + } + + return false; +} + +void SAL_CALL osl_unloadModule(oslModule Module) +{ + FreeLibrary(static_cast<HMODULE>(Module)); +} + +void* SAL_CALL osl_getSymbol(oslModule Module, rtl_uString *strSymbolName) +{ + /* casting from a function pointer to a data pointer is invalid + be in this case unavoidable because the API has to stay + compatible. We need to keep this function which returns a + void* by definition */ +#ifdef _MSC_VER +#pragma warning(push) +#pragma warning(disable:4054) +#endif + return reinterpret_cast<void*>(osl_getFunctionSymbol(Module, strSymbolName)); +#ifdef _MSC_VER +#pragma warning(pop) +#endif +} + +oslGenericFunction SAL_CALL osl_getFunctionSymbol( oslModule Module, rtl_uString *strSymbolName ) +{ + rtl_String *symbolName = nullptr; + oslGenericFunction address; + + OSL_ASSERT(Module); + OSL_ASSERT(strSymbolName); + + rtl_uString2String( + &symbolName, + strSymbolName->buffer, + strSymbolName->length, + RTL_TEXTENCODING_UTF8, + OUSTRING_TO_OSTRING_CVTFLAGS + ); + + address=osl_getAsciiFunctionSymbol(Module, rtl_string_getStr(symbolName)); + rtl_string_release(symbolName); + + return address; +} + +oslGenericFunction SAL_CALL +osl_getAsciiFunctionSymbol( oslModule Module, const char *pSymbol ) +{ + oslGenericFunction fncAddr = nullptr; + + if( pSymbol ) + fncAddr=reinterpret_cast<oslGenericFunction>(GetProcAddress(static_cast<HMODULE>(Module), pSymbol)); + + return fncAddr; +} + +sal_Bool SAL_CALL osl_getModuleURLFromAddress( void *pv, rtl_uString **pustrURL ) +{ + bool bSuccess = false; /* Assume failure */ + static HMODULE hModPsapi = LoadLibraryW( L"PSAPI.DLL" ); + static auto lpfnEnumProcessModules = reinterpret_cast<decltype(EnumProcessModules)*>( + hModPsapi ? GetProcAddress(hModPsapi, "EnumProcessModules") : nullptr); + static auto lpfnGetModuleInformation = reinterpret_cast<decltype(GetModuleInformation)*>( + hModPsapi ? GetProcAddress(hModPsapi, "GetModuleInformation") : nullptr); + + if (lpfnEnumProcessModules && lpfnGetModuleInformation) + { + DWORD cbNeeded = 0; + HMODULE* lpModules = nullptr; + DWORD nModules = 0; + UINT iModule = 0; + MODULEINFO modinfo; + + lpfnEnumProcessModules(GetCurrentProcess(), nullptr, 0, &cbNeeded); + + lpModules = static_cast<HMODULE*>(_alloca(cbNeeded)); + lpfnEnumProcessModules(GetCurrentProcess(), lpModules, cbNeeded, &cbNeeded); + + nModules = cbNeeded / sizeof(HMODULE); + + for (iModule = 0; !bSuccess && iModule < nModules; iModule++) + { + lpfnGetModuleInformation(GetCurrentProcess(), lpModules[iModule], &modinfo, + sizeof(modinfo)); + + if (static_cast<BYTE*>(pv) >= static_cast<BYTE*>(modinfo.lpBaseOfDll) + && static_cast<BYTE*>(pv) + < static_cast<BYTE*>(modinfo.lpBaseOfDll) + modinfo.SizeOfImage) + { + ::osl::LongPathBuffer<sal_Unicode> aBuffer(MAX_LONG_PATH); + rtl_uString* ustrSysPath = nullptr; + + GetModuleFileNameW(lpModules[iModule], o3tl::toW(aBuffer), + aBuffer.getBufSizeInSymbols()); + + rtl_uString_newFromStr(&ustrSysPath, aBuffer); + osl_getFileURLFromSystemPath(ustrSysPath, pustrURL); + rtl_uString_release(ustrSysPath); + + bSuccess = true; + } + } + } + + return bSuccess; +} + +sal_Bool SAL_CALL osl_getModuleURLFromFunctionAddress( oslGenericFunction addr, rtl_uString ** ppLibraryUrl ) +{ + /* casting a function pointer to a data pointer (void*) is + not allowed according to the C/C++ standards. In this case + it is unavoidable because we have to stay compatible we + cannot remove any function. */ +#ifdef _MSC_VER +#pragma warning(push) +#pragma warning(disable:4054) +#endif + return osl_getModuleURLFromAddress(reinterpret_cast<void*>(addr), ppLibraryUrl); +#ifdef _MSC_VER +#pragma warning(pop) +#endif +} + +/* vim:set shiftwidth=4 softtabstop=4 expandtab: */ |