/*

* Copyright (c) 2007-2007 Nokia Corporation and/or its subsidiary(-ies).

* All rights reserved.

* This component and the accompanying materials are made available

* under the terms of "Eclipse Public License v1.0"

* which accompanies this distribution, and is available

* at the URL "http://www.eclipse.org/legal/epl-v10.html".

*

* Initial Contributors:

* Nokia Corporation - initial contribution.

*

* Contributors:

*

* Description:

*

*/

#include <dirent.h>

#include <memory>

#include <string.h> // Needed for strcmp

#include <iostream>

#include <fstream>

#include <iomanip>

#include <sstream>

#include <e32err.h>

#include <f32file.h>

#include <hal.h>

#include <flogger.h>

#include "logger.h"

#include "javaoslayer.h"

#include "javasymbianoslayer.h"

#include "libraryloaderexception.h"

#include "dynamiclibloader.h"

#include "javacommonutils.h"

#include "s60commonutils.h"

using namespace java::util;

const char * const BOOT_CLASSPATH_MIDP_FILE = "midpodclist";

const char * const BOOT_CLASSPATH_INSTALLER_FILE = "installerodclist";

const char * const BOOT_CLASSPATH_TCKRUNNER_FILE = "tckrunnerodclist";

_LIT(KStartUpTraceDir, "java\\full");

_LIT(KStartUpTraceFile, "startup.txt");

_LIT(KTraceSpaceExtra, "                                         ");

OS_EXPORT void JavaOsLayer::startUpTrace(const std::string& header,

        int freeMem, int totalMem)

{

    if (header.length() == 0)

    {

        _LIT(KDash, "-");

        RFileLogger::Write(KStartUpTraceDir, KStartUpTraceFile,

                           EFileLoggingModeAppend, KDash);

    }

    else

    {

        TTime time;

        time.HomeTime();

        const int maxStrLen = 41;

        TBuf<maxStrLen>  str;

        _LIT(KFormatStr, "%-B%:0%J%:1%T%:2%S%.%*C2%:3%+B");

        TRAP_IGNORE(time.FormatL(str, KFormatStr));

        int mem = 0;

        int err = HAL::Get(HALData::EMemoryRAMFree, mem);

        if (err != KErrNone)

        {

            mem = err;

        }

        HBufC* buf = stringToDes(header.c_str());

        const int maxLen = 41;

        int headerLen = Min(buf->Length(), maxLen);

        TPtrC headerPtr = buf->Left(headerLen);

        TPtrC spacePtr = KTraceSpaceExtra().Right(maxLen - headerLen);

        int heapUsageTotal;

        User::AllocSize(heapUsageTotal);

        _LIT(KOutStr, "%S%S Time(%S), SysMem(%d), pUsedHeap(%d), free(%d), total(%d)");

        RFileLogger::WriteFormat(KStartUpTraceDir, KStartUpTraceFile,

                                 EFileLoggingModeAppend,

                                 KOutStr,

                                 &headerPtr, &spacePtr, &str, mem, heapUsageTotal, freeMem, totalMem);

        delete buf;

    }

}

OS_EXPORT void JavaOsLayer::getOsSpecificLibName(std::string& result,

        const char* libName)

{

//    JELOG2(EUtils);

    if (libName)

    {

        result = libName;

    }

    else

    {

        ELOG(EUtils, "JavaOsLayer::getOsSpecificLibName() libname was null");

    }

}

OS_EXPORT void JavaOsLayer::getOsSpecificJavaRootPath(std::string& path)

{

//    JELOG2(EUtils);

    path = "c:\\java";

}

OS_EXPORT std::string& JavaOsLayer::getBinRoot(std::string& path, bool append)

{

//    JELOG2(EUtils);

    const char* start = ":\\sys\\bin\\";

    if (append)

    {

        path += start;

    }

    else

    {

        path = start+1;

    }

    return path;

}

OS_EXPORT std::string& JavaOsLayer::getResRoot(std::string& path, bool append)

{

//    JELOG2(EUtils);

    const char* start = ":\\resource\\java\\";

    if (append)

    {

        path += start;

    }

    else

    {

        path = start+1;

    }

    return path;

}

OS_EXPORT std::string& JavaOsLayer::getMidpRoot(std::string& path, bool append)

{

//    JELOG2(EUtils);

    const char* start = ":\\private\\102033E6\\";

//    const char* start = ":\\private\\200211D9\\";

    if (append)

    {

        path += start;

    }

    else

    {

        path = start+1;

    }

    /*

        TUint32 uid = RProcess().SecureId().iId;

        std::ostringstream oss;

        oss<<std::hex<<uid;

        path += oss.str();

        path += "]\\";

    */

    return path;

}

OS_EXPORT std::string& JavaOsLayer::getJavaCaptainRoot(std::string& path, bool append)

{

//    JELOG2(EUtils);

    const char* start = ":\\private\\200211DC\\";

    if (append)

    {

        path += start;

    }

    else

    {

        path = start+1;

    }

    return path;

}

OS_EXPORT DriveId JavaOsLayer::getMidpDrive()

{

//    JELOG2(EUtils);

    int driveNum = 1;

    TUint16 driveLetter = RProcess().FileName()[0];

    RFs::CharToDrive(driveLetter, driveNum);

    char* drive = new char[2];

    drive[0] = *((char*)&driveLetter);

    drive[1] = 0;

    return DriveId(drive, driveNum);

}

OS_EXPORT void* JavaOsLayer::dlopen(const char* libName)

{

    JELOG2(EUtils);

    RLibrary* libAccess = 0;

    if (libName)

    {

        libAccess = new RLibrary();

        if (libAccess)

        {

            HBufC* buf = stringToDes(libName);

            if (buf)

            {

                int status = libAccess->Load(*buf);

                LOG2(EUtils, EInfo, "JavaOsLayer::dlopen(%s), Handle: %X",

                     libName, libAccess);

                delete buf;

                if (status != KErrNone)

                {

                    delete libAccess;

                    libAccess = 0;

                    throw LibraryLoaderException(OPENING_LIBRARY_FAILED, status,

                                                 "Error opening Symbian lib.",

                                                 __FILE__, __FUNCTION__, __LINE__);

                }

                else

                {

                    //The code below makes RLibrary accessible from any thread.

                    // copies the handle without doing Open()

                    RLibrary duplicate=*libAccess;

                    // overwrite the original

                    status = libAccess->Duplicate(RThread());

                    duplicate.Close(); // close the original

                }

            }

        }

    }

    else

    {

        ELOG(EUtils, "JavaOsLayer::dlopen() libname was null");

    }

    return libAccess;

}

OS_EXPORT void* JavaOsLayer::dlsym(void* handle, const char* name,

                                   bool containsByteCode)

{

    JELOG2(EUtils);

    void* func = 0;

    if (handle && name)

    {

        RLibrary*  libAccess = reinterpret_cast<RLibrary*>(handle);

        LookupFunc lookup = (LookupFunc)libAccess->Lookup(containsByteCode?2:1);

        if (lookup)

        {

            func = (void*) lookup(name);

            LOG2(EUtils, EInfo, "JavaOsLayer::dlsym() fuction name: %s, "

                 "fPtr: %X", name, func);

            if (func == 0)

            {

                ELOG1(EUtils, "dlsym failed for %s.", name);

            }

        }

        else

        {

            ELOG1(EUtils,

                  "No lookup method in ordinal 1 when looking for %s.", name);

        }

    }

    else

    {

        ELOG2(EUtils, "JavaOsLayer::dlsym() null argument handle: %X, name %X",

              handle, name);

    }

    return func;

}

OS_EXPORT int JavaOsLayer::dlclose(void* handle)

{

    JELOG2(EUtils);

    if (handle)

    {

        RLibrary*  libAccess = reinterpret_cast<RLibrary*>(handle);

        libAccess->Close();

        delete libAccess;

    }

    else

    {

        ELOG(EUtils, "dlclose failed, null handle");

    }

    return 0;

}

OS_EXPORT void JavaOsLayer::bootClassPath(std::list<std::wstring>& odcFiles,

        std::list<std::wstring>& bcpEntites,

        const int pathType)

{

    /*

     * getResRoot requires drive letter but VerifiedFileNameL adds correct one.

     * C drive used that it is checked first and if file is found that is used

     * after that z is checked.

     */

    std::string path = "c";

    JavaOsLayer::getResRoot(path, true);

    if (BOOT_CLASSPATH_MIDP == pathType)

    {

        path.append(BOOT_CLASSPATH_MIDP_FILE);

    }

    else if (BOOT_CLASSPATH_INSTALLER == pathType)

    {

        path.append(BOOT_CLASSPATH_INSTALLER_FILE);

    }

    else if (BOOT_CLASSPATH_TCKRUNNER == pathType)

    {

        path.append(BOOT_CLASSPATH_TCKRUNNER_FILE);

    }

    else

    {

        path.append(BOOT_CLASSPATH_MIDP_FILE);

    }

    std::auto_ptr<HBufC>pathDes(stringToDes(path.c_str()));

    TFileName realPathName;

    TRAPD(err, realPathName = S60CommonUtils::VerifiedFileNameL(*pathDes));

    if (KErrNone == err)

    {

        std::wstring temp((wchar_t*)realPathName.PtrZ());

        std::string odcFileName(temp.begin(), temp.end());

        std::vector<std::string> romClasspathEntries;

        std::string dir_path("Z:\\resource\\java\\jvm\\lib\\jrt");

        listDirectory(dir_path, romClasspathEntries);  // This is always needed.

        if (odcFileName[0] == 'c' || odcFileName[0] == 'C')  // IAD deployed

        {

            std::vector<std::string> updatedClasspathEntries;

            listOdcFile(path, updatedClasspathEntries);  // Read all ODC files from odc file

            std::string::size_type const delimiter = path.rfind("\\");

            path = path.substr(0, delimiter);  // IAD ODC file directory

            populateCPEntries((path + "\\jvm\\lib\\jrt\\"), updatedClasspathEntries, odcFiles, bcpEntites);

            std::vector<std::string> romDeltaEntries;

            // Add all ROM entries that are not deployed using IAD.

            deltaCPEntries(romClasspathEntries, updatedClasspathEntries, romDeltaEntries);

            // Add ROM only entries

            populateCPEntries((dir_path + "\\"), romDeltaEntries, odcFiles, bcpEntites);

        }

        else  // Classpath only at ROM so using dir listing.

        {

            populateCPEntries((dir_path + "\\"), romClasspathEntries, odcFiles, bcpEntites);

        }

    }

    else

    {

        ELOG1(EUtils, "Cannot get real path name for: '%s'", path.c_str());

    }

}

void JavaOsLayer::listDirectory(std::string& aDirPath, std::vector<std::string>& aEntries)

{

    DIR *pDIR = opendir(aDirPath.c_str());    // open directory

    if (pDIR == NULL)

    {

        std::string errorMsg("Cannot read ROM ODC files: ");

        errorMsg.append(strerror(errno));

        errorMsg.append(" : dir: ");

        errorMsg.append(aDirPath.c_str());

        ELOG(EUtils, errorMsg.c_str());

        // Suppres error if no Java at all on device ROM.

    }

    struct dirent* pDirEnt = readdir(pDIR);

    while (pDirEnt != NULL)

    {

        aEntries.push_back(std::string(pDirEnt->d_name));

        pDirEnt = readdir(pDIR);

    }

    closedir(pDIR);    // Release the open directory

}

void JavaOsLayer::listOdcFile(std::string& filePath, std::vector<std::string>& entries)

{

    std::ifstream odcFile;

    odcFile.open(filePath.c_str(), std::ifstream::in);

    if (odcFile)

    {

        std::string line;

        while (std::getline(odcFile, line))

        {

            // Trim enter if exists.

            std::string::size_type const enter = line.find_last_not_of("\n");

            entries.push_back(line.substr(0, enter));

        }

        odcFile.close();

    }

    else

    {

        ELOG1(EUtils, "Cannot read file: '%s'", filePath.c_str());

    }

}

void JavaOsLayer::populateCPEntries(const std::string& pathPrefix,

                                    const std::vector<std::string>& entries,

                                    std::list<std::wstring>& odcFiles,

                                    std::list<std::wstring>& bcpEntites)

{

    std::vector<std::string>::const_iterator iter;

    for (iter = entries.begin(); iter != entries.end(); ++iter)

    {

        std::string entryName((*iter));

        entryName.insert(0, pathPrefix);    // Full path needed.

        std::wstring wideEntryName = L"";

        try

        {

            wideEntryName = JavaCommonUtils::utf8ToWstring(entryName.c_str());

        }

        catch (ExceptionBase& eb)

        {

            // Suppress error to skip invalid ones.

            ELOG2(EUtils, "utf8->wstring failed on cp entry: '%s' exp: %s ",

                  entryName.c_str(), eb.toString().c_str());

        }

        size_t pos = wideEntryName.rfind(L".odc");

        bool isOdcFile = (pos != std::string::npos) &&

                         (pos == (wideEntryName.length() - 4));

        if (isOdcFile)

        {

            odcFiles.push_back(wideEntryName);

        }

        else

        {

            bcpEntites.push_back(wideEntryName);

        }

    }

}

void JavaOsLayer::deltaCPEntries(const std::vector<std::string>& romEntries,

                                 const std::vector<std::string>& iadEntries,

                                 std::vector<std::string>& deltaEntries)

{

    std::vector<std::string>::const_iterator iter;  // ROM CP iter

    std::vector<std::string>::const_iterator matchIter; // IAD CP iter

    std::vector<std::string> romDeltaEntries;

    // Iterate through all rom entries

    for (iter = romEntries.begin(); iter != romEntries.end(); ++iter)

    {

        bool match = false;

        // and check if they do not match to IAD ones add to romDeltaEntries.

        for (matchIter = iadEntries.begin(); matchIter != iadEntries.end(); ++matchIter)

        {

            if ((*matchIter) == (*iter))

            {

                match = true;

                break;

            }

        }

        if (!match)

        {

            deltaEntries.push_back((*iter));

        }

    }

}

OS_EXPORT FuncPtr findMethod(const char* funcName,

                             const FuncTable funcTable[],

                             int tableSize)

{

//    JELOG2(EUtils);

    int       res = 0;

    int       mid = 0;

    int       top = 0;

    int       bottom = tableSize-1;

    if (funcName == 0)

    {

        ELOG(EUtils, "findMethod failed, null funcName");

        return 0;

    }

    if (funcTable == 0)

    {

        ELOG(EUtils, "findMethod failed, null funcTable");

        return 0;

    }

    // Loop while the number of the items left in the list is greater

    // than 2.  Each iteration will split the number of items left to search

    // in half

    while ((bottom - top) > 1)

    {

        // This case handles the normal serach case where the number of

        // items left to search is greater than 2

        mid = (top + bottom) / 2;

        res = strcmp(funcName, funcTable[mid].mFuncName);

        if (res == 0)

        {

            return((FuncPtr) funcTable[mid].mFuncAddr);

        }

        if (res > 0)

        {

            top = mid;

        }

        else

        {

            bottom = mid;

        }

    }

    // If there are two items left in the list then the bottom item should be

    // checked for a match

    if (bottom != top)

    {

        // Check the bottom item to see if it is a match

        res=strcmp(funcName, funcTable[bottom].mFuncName);

        if (res == 0)

        {

            return ((FuncPtr) funcTable[bottom].mFuncAddr);

        }

    }