Adding upstream version 4:7.4.7.upstream/4%7.4.7upstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 202 insertions, 0 deletions

diff --git a/sal/osl/w32/module.cxx b/sal/osl/w32/module.cxx
new file mode 100644
index 000000000..8379e14b2
--- /dev/null
+++ b/sal/osl/w32/module.cxx
@@ -0,0 +1,202 @@
+/* -*- 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 "file_url.hxx"
+#include "path_helper.hxx"
+
+#include <osl/module.h>
+#include <osl/diagnose.h>
+#include <osl/thread.h>
+#include <osl/file.h>
+#include <rtl/ustring.hxx>
+#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 baseModule, char const * relativePath, sal_Int32 mode)
+{
+    return osl_loadModuleRelative(baseModule, OUString::createFromAscii(relativePath).pData, mode);
+}
+
+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 */
+    return reinterpret_cast<void*>(osl_getFunctionSymbol(Module, strSymbolName));
+}
+
+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 )
+{
+    HMODULE hModule{};
+    GetModuleHandleExW(GET_MODULE_HANDLE_EX_FLAG_FROM_ADDRESS
+                           | GET_MODULE_HANDLE_EX_FLAG_UNCHANGED_REFCOUNT,
+                       static_cast<LPCWSTR>(pv), &hModule);
+    if (!hModule)
+        return false;
+
+    ::osl::LongPathBuffer<sal_Unicode> aBuffer(MAX_LONG_PATH);
+
+    DWORD nch = GetModuleFileNameW(hModule, o3tl::toW(aBuffer), aBuffer.getBufSizeInSymbols());
+
+    OUString ustrSysPath(aBuffer, nch);
+    return osl_getFileURLFromSystemPath(ustrSysPath.pData, pustrURL) == osl_File_E_None;
+}
+
+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. */
+    return osl_getModuleURLFromAddress(reinterpret_cast<void*>(addr), ppLibraryUrl);
+}
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */