/* -*- 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 .
 */


#if defined WNT
#if defined _MSC_VER
#pragma warning(push, 1)
#endif
#include <windows.h>
#if defined _MSC_VER
#pragma warning(pop)
#endif
#endif

#include <string>
#include <string.h>
#include "osl/mutex.hxx"
#include "osl/module.hxx"
#include "osl/thread.hxx"
#include "rtl/ustring.hxx"
#include "rtl/ustrbuf.hxx"
#include "rtl/bootstrap.hxx"
#include "osl/file.hxx"
#include "osl/process.h"
#include "rtl/instance.hxx"
#include "rtl/uri.hxx"
#include "osl/getglobalmutex.hxx"
#include "com/sun/star/lang/IllegalArgumentException.hpp"
#include "cppuhelper/bootstrap.hxx"

#include "framework.hxx"
#include "fwkutil.hxx"

using namespace osl;


namespace jfw
{

bool isAccessibilitySupportDesired()
{
    OUString sValue;
    if (::rtl::Bootstrap::get( "JFW_PLUGIN_DO_NOT_CHECK_ACCESSIBILITY", sValue) &&
        sValue == "1" )
        return false;

    bool retVal = false;
#ifdef WNT
    HKEY    hKey = 0;
    if (RegOpenKeyEx(HKEY_CURRENT_USER,
                     "Software\\LibreOffice\\Accessibility\\AtToolSupport",
                     0, KEY_READ, &hKey) == ERROR_SUCCESS)
    {
        DWORD   dwType = 0;
        DWORD   dwLen = 16;
        unsigned char arData[16];
        if( RegQueryValueEx(hKey, "SupportAssistiveTechnology", NULL, &dwType, arData,
                            & dwLen)== ERROR_SUCCESS)
        {
            if (dwType == REG_SZ)
            {
                if (strcmp((char*) arData, "true") == 0
                    || strcmp((char*) arData, "1") == 0)
                    retVal = true;
                else if (strcmp((char*) arData, "false") == 0
                         || strcmp((char*) arData, "0") == 0)
                    retVal = false;
#if OSL_DEBUG_LEVEL > 1
                else
                    OSL_ASSERT(0);
#endif
            }
            else if (dwType == REG_DWORD)
            {
                if (arData[0] == 1)
                    retVal = true;
                else if (arData[0] == 0)
                    retVal = false;
#if OSL_DEBUG_LEVEL > 1
                else
                    OSL_ASSERT(0);
#endif
            }
        }
    }
    RegCloseKey(hKey);

#elif defined UNX
    // Java is no longer required for a11y - we use atk directly.
    retVal = ::rtl::Bootstrap::get( "JFW_PLUGIN_FORCE_ACCESSIBILITY", sValue) && sValue == "1";
#endif

    return retVal;
}

rtl::ByteSequence encodeBase16(const rtl::ByteSequence& rawData)
{
    static const char EncodingTable[] =
        {'0','1','2','3','4','5','6','7','8','9','A','B','C','D','E','F'};
    sal_Int32 lenRaw = rawData.getLength();
    char* pBuf = new char[lenRaw * 2];
    const sal_Int8* arRaw = rawData.getConstArray();

    char* pCurBuf = pBuf;
    for (int i = 0; i < lenRaw; i++)
    {
        unsigned char curChar = arRaw[i];
        curChar >>= 4;

        *pCurBuf = EncodingTable[curChar];
        pCurBuf++;

        curChar = arRaw[i];
        curChar &= 0x0F;

        *pCurBuf = EncodingTable[curChar];
        pCurBuf++;
    }

    rtl::ByteSequence ret((sal_Int8*) pBuf, lenRaw * 2);
    delete [] pBuf;
    return ret;
}

rtl::ByteSequence decodeBase16(const rtl::ByteSequence& data)
{
    static const char decodingTable[] =
        {'0','1','2','3','4','5','6','7','8','9','A','B','C','D','E','F'};
    sal_Int32 lenData = data.getLength();
    sal_Int32 lenBuf = lenData / 2; //always divisable by two
    unsigned char* pBuf = new unsigned char[lenBuf];
    const sal_Int8* pData = data.getConstArray();
    for (sal_Int32 i = 0; i < lenBuf; i++)
    {
        sal_Int8 curChar = *pData++;
        //find the index of the first 4bits
        //  TODO  What happens if text is not valid Hex characters?
        unsigned char nibble = 0;
        for (unsigned char j = 0; j < 16; j++)
        {
            if (curChar == decodingTable[j])
            {
                nibble = j;
                break;
            }
        }
        nibble <<= 4;
        curChar = *pData++;
        //find the index for the next 4bits
        for (unsigned char j = 0; j < 16; j++)
        {
            if (curChar == decodingTable[j])
            {
                nibble |= j;
                break;
            }
        }
        pBuf[i] = nibble;
    }
    rtl::ByteSequence ret((sal_Int8*) pBuf, lenBuf );
    delete [] pBuf;
    return ret;
}

OUString getDirFromFile(const OUString& usFilePath)
{
    sal_Int32 index= usFilePath.lastIndexOf('/');
    return OUString(usFilePath.getStr(), index);
}

OUString getExecutableDirectory()
{
    rtl_uString* sExe = NULL;
    if (osl_getExecutableFile( & sExe) != osl_Process_E_None)
        throw FrameworkException(
            JFW_E_ERROR,
            "[Java framework] Error in function getExecutableDirectory (fwkutil.cxx)");

    OUString ouExe(sExe, SAL_NO_ACQUIRE);
    return getDirFromFile(ouExe);
}

OUString findPlugin(
    const OUString & baseUrl, const OUString & plugin)
{
    OUString expandedPlugin;
    try
    {
        expandedPlugin = cppu::bootstrap_expandUri(plugin);
    }
    catch (const com::sun::star::lang::IllegalArgumentException & e)
    {
        throw FrameworkException(
            JFW_E_ERROR,
            (OString(
                RTL_CONSTASCII_STRINGPARAM(
                    "[Java framework] IllegalArgumentException in"
                    " findPlugin: "))
             + OUStringToOString(e.Message, osl_getThreadTextEncoding())));
    }
    OUString sUrl;
    try
    {
        sUrl = rtl::Uri::convertRelToAbs(baseUrl, expandedPlugin);
    }
    catch (const rtl::MalformedUriException & e)
    {
        throw FrameworkException(
            JFW_E_ERROR,
            (OString(
                RTL_CONSTASCII_STRINGPARAM(
                    "[Java framework] rtl::MalformedUriException in"
                    " findPlugin: "))
             + OUStringToOString(
                 e.getMessage(), osl_getThreadTextEncoding())));
    }
    if (checkFileURL(sUrl) == jfw::FILE_OK)
    {
        return sUrl;
    }
    OUString retVal;
    OUString sProgDir = getExecutableDirectory();
    sUrl = sProgDir + OUString("/")
        + plugin;
    jfw::FileStatus s = checkFileURL(sUrl);
    if (s == jfw::FILE_INVALID || s == jfw::FILE_DOES_NOT_EXIST)
    {
        //If only the name of the library is given, then
        //use PATH, LD_LIBRARY_PATH etc. to locate the plugin
        if (plugin.indexOf('/') == -1)
        {
            OUString url;
#ifdef UNX
#if defined(MACOSX)
            OUString path = OUString("DYLD_LIBRARY_PATH");
#elif defined(AIX)
            OUString path = OUString("LIBPATH");
#else
            OUString path = OUString("LD_LIBRARY_PATH");
#endif
            OUString env_path;
            oslProcessError err = osl_getEnvironment(path.pData, &env_path.pData);
            if (err != osl_Process_E_None && err != osl_Process_E_NotFound)
                throw FrameworkException(
                    JFW_E_ERROR,
                    "[Java framework] Error in function findPlugin (fwkutil.cxx).");
            if (err == osl_Process_E_NotFound)
                return retVal;
            if (osl_searchFileURL(plugin.pData, env_path.pData, &url.pData)
                                == osl_File_E_None)
#else
            if (osl_searchFileURL(plugin.pData, NULL, &url.pData)
                == osl_File_E_None)
#endif
                retVal = url;
            else
                throw FrameworkException(
                    JFW_E_ERROR,
                    "[Java framework] Error in function findPlugin (fwkutil.cxx).");
        }
    }
    else
    {
        retVal = sUrl;
    }
    return retVal;
}

OUString getLibraryLocation()
{
    OString sExcMsg("[Java framework] Error in function getLibraryLocation "
                         "(fwkutil.cxx).");
    OUString libraryFileUrl;

    if (!osl::Module::getUrlFromAddress(
            reinterpret_cast< oslGenericFunction >(getLibraryLocation),
            libraryFileUrl))
        throw FrameworkException(JFW_E_ERROR, sExcMsg);

    return getDirFromFile(libraryFileUrl);
}

jfw::FileStatus checkFileURL(const OUString & sURL)
{
    jfw::FileStatus ret = jfw::FILE_OK;
    DirectoryItem item;
    File::RC rc_item = DirectoryItem::get(sURL, item);
    if (File::E_None == rc_item)
    {
        osl::FileStatus status(osl_FileStatus_Mask_Validate);

        File::RC rc_stat = item.getFileStatus(status);
        if (File::E_None == rc_stat)
        {
            ret = FILE_OK;
        }
        else if (File::E_NOENT == rc_stat)
        {
            ret = FILE_DOES_NOT_EXIST;
        }
        else
        {
            ret = FILE_INVALID;
        }
    }
    else if (File::E_NOENT == rc_item)
    {
        ret = FILE_DOES_NOT_EXIST;
    }
    else
    {
        ret = FILE_INVALID;
    }
    return ret;
}

}

/* vim:set shiftwidth=4 softtabstop=4 expandtab: */