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#include "activesyncconnection.h"

#include <qdir.h>

#include <qfile.h>

#include <qfileinfo>

#include <rapi.h>

extern void debugOutput(const QString& text, int level);

ActiveSyncConnection::ActiveSyncConnection()

        : AbstractRemoteConnection()

        , connected(false)

{

}

ActiveSyncConnection::~ActiveSyncConnection()

{

    if (isConnected())

        disconnect();

}

bool ActiveSyncConnection::connect(QVariantList&)

{

    if (connected)

        return true;

    connected = false;

    RAPIINIT init;

    init.cbSize = sizeof(init);

    if (CeRapiInitEx(&init) != S_OK)

        return connected;

    DWORD res;

    res = WaitForMultipleObjects(1,&(init.heRapiInit),true, 5000);

    if ((res == -1) || (res == WAIT_TIMEOUT) || (init.hrRapiInit != S_OK))

        return connected;

    connected = true;

    return connected;

}

void ActiveSyncConnection::disconnect()

{

    connected = false;

    CeRapiUninit();

}

bool ActiveSyncConnection::isConnected() const

{

    return connected;

}

bool ActiveSyncConnection::copyFileToDevice(const QString &localSource, const QString &deviceDest, bool failIfExists)

{

    if (failIfExists) {

        CE_FIND_DATA search;

        HANDLE searchHandle = CeFindFirstFile(deviceDest.utf16(), &search);

        if (searchHandle != INVALID_HANDLE_VALUE) {

            CeFindClose(searchHandle);

            return false;

        }

    }

    QFile file(localSource);

    if (!file.exists())

        return false;

    if (!file.open(QIODevice::ReadOnly)) {

        debugOutput(QString::fromLatin1("  Could not open source file"),2);

        if (file.size() == 0) {

            // Create an empy file

            deleteFile(deviceDest);

            HANDLE deviceHandle = CeCreateFile(deviceDest.utf16(), GENERIC_WRITE, 0, 0, CREATE_ALWAYS, FILE_ATTRIBUTE_NORMAL, 0);

            if (deviceHandle != INVALID_HANDLE_VALUE) {

                CeCloseHandle(deviceHandle);

                return true;

            }

        } else {

            qWarning("Could not open %s: %s", qPrintable(localSource), qPrintable(file.errorString()));

        }

        return false;

    }

    deleteFile(deviceDest);

    HANDLE deviceHandle = CeCreateFile(deviceDest.utf16(), GENERIC_WRITE, 0, 0, CREATE_ALWAYS, FILE_ATTRIBUTE_NORMAL, 0);

    if (deviceHandle == INVALID_HANDLE_VALUE) {

        qWarning("Could not create %s: %s", qPrintable(deviceDest), strwinerror(CeGetLastError()).constData());

        return false;

    }

    DWORD written = 0;

    int currentPos = 0;

    int size = file.size();

    DWORD toWrite = 0;

    const int bufferSize = 65000;

    QByteArray data;

    data.reserve(bufferSize);

    while (currentPos < size) {

        data = file.read(bufferSize);

        if (data.size() <= 0) {

            wprintf( L"Error while reading file!\n");

            return false;

        }

        if (size - currentPos > bufferSize )

            toWrite = bufferSize;

        else

            toWrite = size - currentPos;

        if (toWrite == 0)

            break;

        if (!CeWriteFile(deviceHandle, data.data() , toWrite, &written, NULL)) {

            qWarning("Could not write to %s: %s", qPrintable(deviceDest), strwinerror(CeGetLastError()).constData());

            return false;

        }

        currentPos += written;

        data.clear();

        wprintf( L"%s -> %s (%d / %d) %d %%\r", localSource.utf16() , deviceDest.utf16(), currentPos , size, (100*currentPos)/size );

    }

    wprintf(L"\n");

    // Copy FileTime for update verification

    FILETIME creationTime, accessTime, writeTime;

    HANDLE localHandle = CreateFile(localSource.utf16(), GENERIC_READ, FILE_SHARE_READ, NULL, OPEN_EXISTING, 0, 0);

    if (localHandle != INVALID_HANDLE_VALUE) {

        if (GetFileTime(localHandle, &creationTime, &accessTime, &writeTime)) {

            LocalFileTimeToFileTime(&writeTime, &writeTime);

            if (!CeSetFileTime(deviceHandle, &writeTime, NULL, NULL)) {

                debugOutput(QString::fromLatin1("  Could not write time values"), 0);

            }

        }

        CloseHandle(localHandle);

    }

    CeCloseHandle(deviceHandle);

    DWORD attributes = GetFileAttributes(localSource.utf16());

    if (attributes != -1 )

        CeSetFileAttributes(deviceDest.utf16(), attributes);

    return true;

}

bool ActiveSyncConnection::copyDirectoryToDevice(const QString &localSource, const QString &deviceDest, bool recursive)

{

    QDir dir(localSource);

    if (!dir.exists())

        return false;

    deleteDirectory(deviceDest, recursive);

    CeCreateDirectory(deviceDest.utf16(), NULL);

    foreach(QString entry, dir.entryList(QDir::AllEntries | QDir::NoDotAndDotDot)) {

        QString source = localSource + "\\" + entry;

        QString target = deviceDest + "\\" + entry;

        QFileInfo info(source);

        if (info.isDir()) {

            if (recursive) {

                if (!copyDirectoryToDevice(source, target, recursive))

                    return false;

            }

        } else {

            if (!copyFileToDevice(source, target))

                return false;

        }

    }

    return true;

}

bool ActiveSyncConnection::copyFileFromDevice(const QString &deviceSource, const QString &localDest, bool failIfExists)

{

    QFile target(localDest);

    if (failIfExists && target.exists()) {

        debugOutput(QString::fromLatin1("  Not allowed to overwrite file"), 2);

        return false;

    }

    if (target.exists())

        target.remove();

    HANDLE deviceHandle = CeCreateFile(deviceSource.utf16(), GENERIC_READ, FILE_SHARE_READ, NULL, OPEN_EXISTING, 0, 0);

    if (deviceHandle == INVALID_HANDLE_VALUE) {

        debugOutput(QString::fromLatin1("  Could not open file on device"), 2);

        return false;

    }

    DWORD fileSize = CeGetFileSize( deviceHandle, NULL );

    if (fileSize == -1) {

        debugOutput(QString::fromLatin1("  Could not stat filesize of remote file"), 2);

        CeCloseHandle(deviceHandle);

        return false;

    }

    if (!target.open(QIODevice::WriteOnly | QIODevice::Truncate)) {

        debugOutput(QString::fromLatin1("  Could not open local file for writing"), 2);

        CeCloseHandle(deviceHandle);

        return false;

    }

    int bufferSize = 65000;

    char *buffer = (char*) malloc(bufferSize);

    DWORD bufferRead = 0;

    DWORD bufferWritten = 0;

    bool readUntilEnd = false;

    while(CeReadFile(deviceHandle, buffer, bufferSize, &bufferRead, NULL)) {

        if (bufferRead == 0) {

            readUntilEnd = true;

            break;

        }

        target.write(buffer, bufferRead);

        bufferWritten += bufferRead;

        wprintf(L"%s -> %s (%d / %d) %d %%\r", deviceSource.utf16(), localDest.utf16(), bufferWritten, fileSize, (100*bufferWritten)/fileSize);

    }

    wprintf(L"\n");

    if (!readUntilEnd) {

        debugOutput(QString::fromLatin1("  an error occured during copy"), 2);

        return false;

    }

    CeCloseHandle(deviceHandle);

    return true;

}

bool ActiveSyncConnection::copyDirectoryFromDevice(const QString &deviceSource, const QString &localDest, bool recursive)

{

    if (!QDir(localDest).exists() && !QDir(localDest).mkpath(QDir(localDest).absolutePath())) {

        debugOutput(QString::fromLatin1("  Could not create local path"), 2);

    }

    QString searchArg = deviceSource + "\\*";

    CE_FIND_DATA data;

    HANDLE searchHandle = CeFindFirstFile(searchArg.utf16(), &data);

    if (searchHandle == INVALID_HANDLE_VALUE) {

        // We return true because we might be in a recursive call

        // where nothing is to copy and the copy process

        // might still be correct

        return true;

    }

    do {

        QString srcFile = deviceSource + "\\" + QString::fromWCharArray(data.cFileName);

        QString destFile = localDest + "\\" + QString::fromWCharArray(data.cFileName);

        if ((data.dwFileAttributes & FILE_ATTRIBUTE_DIRECTORY)) {

            if (recursive && !copyDirectoryFromDevice(srcFile, destFile, recursive)) {

                wprintf(L"Copy of subdirectory(%s) failed\n", srcFile.utf16());

                return false;

            }

        } else {

            copyFileFromDevice(srcFile, destFile, false);

        }

    } while(CeFindNextFile(searchHandle, &data));

    CeFindClose(searchHandle);

    return true;

}

bool ActiveSyncConnection::copyFile(const QString &srcFile, const QString &destFile, bool failIfExists)

{

    return CeCopyFile(QDir::toNativeSeparators(srcFile).utf16(),

                      QDir::toNativeSeparators(destFile).utf16(), failIfExists);

}

bool ActiveSyncConnection::copyDirectory(const QString &srcDirectory, const QString &destDirectory,

                                      bool recursive)

{

    CeCreateDirectory(destDirectory.utf16(), NULL);

    QString searchArg = srcDirectory + "\\*";

    CE_FIND_DATA data;

    HANDLE searchHandle = CeFindFirstFile(searchArg.utf16(), &data);

    if (searchHandle == INVALID_HANDLE_VALUE) {

        // We return true because we might be in a recursive call

        // where nothing is to copy and the copy process

        // might still be correct

        return true;

    }

    do {

        QString srcFile = srcDirectory + "\\" + QString::fromWCharArray(data.cFileName);

        QString destFile = destDirectory + "\\" + QString::fromWCharArray(data.cFileName);

        if ((data.dwFileAttributes & FILE_ATTRIBUTE_DIRECTORY)) {

            if (recursive && !copyDirectory(srcFile, destFile, recursive)) {

                wprintf(L"Copy of subdirectory(%s) failed\n", srcFile.utf16());

                return false;

            }

        } else {

            debugOutput(QString::fromLatin1("Copy %1 -> %2\n").arg(srcFile).arg(destFile), 0);

            CeCopyFile(srcFile.utf16(), destFile.utf16(), false);

        }

    } while(CeFindNextFile(searchHandle, &data));

    CeFindClose(searchHandle);

    return true;

}

bool ActiveSyncConnection::deleteFile(const QString &fileName)

{

    CeSetFileAttributes(fileName.utf16(), FILE_ATTRIBUTE_NORMAL);

    return CeDeleteFile(fileName.utf16());

}

bool ActiveSyncConnection::deleteDirectory(const QString &directory, bool recursive, bool failIfContentExists)

{

    HANDLE hFind;

    CE_FIND_DATA FindFileData;

    QString FileName = directory + "\\*";

    hFind = CeFindFirstFile(FileName.utf16(), &FindFileData);

    if( hFind == INVALID_HANDLE_VALUE )

        return CeRemoveDirectory(directory.utf16());

    if (failIfContentExists)

        return false;

    do {

        QString FileName = directory + "\\" + QString::fromWCharArray(FindFileData.cFileName);

        if((FindFileData.dwFileAttributes & FILE_ATTRIBUTE_DIRECTORY)) {

            if (recursive)

                if (!deleteDirectory(FileName, recursive, failIfContentExists))

                    return false;

        } else {

            if(FindFileData.dwFileAttributes & FILE_ATTRIBUTE_READONLY)

                CeSetFileAttributes(FileName.utf16(), FILE_ATTRIBUTE_NORMAL);

            if( !CeDeleteFile(FileName.utf16()) )

                break;

        }

    } while(CeFindNextFile(hFind,&FindFileData));

    CeFindClose(hFind);

    return CeRemoveDirectory(directory.utf16());

}

bool ActiveSyncConnection::execute(QString program, QString arguments, int timeout, int *returnValue)

{

    if (!isConnected()) {

        qWarning("Cannot execute, connect to device first!");

        return false;

    }

    PROCESS_INFORMATION* pid = new PROCESS_INFORMATION;

    bool result = false;

    if (timeout != 0) {

        // If we want to wait, we have to use CeRapiInvoke, as CeCreateProcess has no way to wait

        // until the process ends. The lib must have been build and also deployed already.

        if (!isConnected() && !connect())

            return false;

        QString dllLocation = "\\Windows\\QtRemote.dll";

        QString functionName = "qRemoteLaunch";

        DWORD outputSize;

        BYTE* output;

        IRAPIStream *stream;

        int returned = 0;

        DWORD error = 0;

        HRESULT res = CeRapiInvoke(dllLocation.utf16(), functionName.utf16(), 0, 0, &outputSize, &output, &stream, 0);

        if (S_OK != res) {

            DWORD ce_error = CeGetLastError();

            if (S_OK != ce_error) {

                qWarning("Error invoking %s on %s: %s", qPrintable(functionName),

                    qPrintable(dllLocation), strwinerror(ce_error).constData());

            } else {

                qWarning("Error: %s on %s unexpectedly returned %d", qPrintable(functionName),

                    qPrintable(dllLocation), res);

            }

        } else {

            DWORD written;

            int strSize = program.length();

            if (S_OK != stream->Write(&strSize, sizeof(strSize), &written)) {

                qWarning("   Could not write appSize to process");

                return false;

            }

            if (S_OK != stream->Write(program.utf16(), program.length()*sizeof(wchar_t), &written)) {

                qWarning("   Could not write appName to process");

                return false;

            }

            strSize = arguments.length();

            if (S_OK != stream->Write(&strSize, sizeof(strSize), &written)) {

                qWarning("   Could not write argumentSize to process");

                return false;

            }

            if (S_OK != stream->Write(arguments.utf16(), arguments.length()*sizeof(wchar_t), &written)) {

                qWarning("   Could not write arguments to process");

                return false;

            }

            if (S_OK != stream->Write(&timeout, sizeof(timeout), &written)) {

                qWarning("   Could not write waiting option to process");

                return false;

            }

            if (S_OK != stream->Read(&returned, sizeof(returned), &written)) {

                qWarning("   Could not access return value of process");

            }

            if (S_OK != stream->Read(&error, sizeof(error), &written)) {

                qWarning("   Could not access error code");

            }

            if (error) {

                qWarning("Error on target: %s", strwinerror(error).constData());

                result = false;

            }

            else {

                result = true;

            }

        }

        if (returnValue)

            *returnValue = returned;

    } else {

        // We do not need to invoke another lib etc, if we are not interested in results anyway...

        result = CeCreateProcess(program.utf16(), arguments.utf16(), 0, 0, false, 0, 0, 0, 0, pid);

    }

    return result;

}

bool ActiveSyncConnection::createDirectory(const QString &path, bool deleteBefore)

{

    if (deleteBefore)

        deleteDirectory(path);

    QStringList separated = path.split(QLatin1Char('\\'));

    QString current = QLatin1String("\\");

    bool result;

    for (int i=1; i < separated.size(); ++i) {

        current += separated.at(i);

        result = CeCreateDirectory(current.utf16(), NULL);

        current += QLatin1String("\\");

    }

    return result;

}

bool ActiveSyncConnection::timeStampForLocalFileTime(FILETIME* fTime) const

{

    QString tmpFile = QString::fromLatin1("\\qt_tmp_ftime_convert");

    HANDLE remoteHandle = CeCreateFile(tmpFile.utf16(), GENERIC_WRITE, 0, 0, CREATE_ALWAYS, FILE_ATTRIBUTE_NORMAL, 0);

    if (remoteHandle == INVALID_HANDLE_VALUE)

        return false;

    LocalFileTimeToFileTime(fTime, fTime);

    if (!CeSetFileTime(remoteHandle, fTime, NULL, NULL)) {

        CeCloseHandle(remoteHandle);

        return false;

    }

    CeCloseHandle(remoteHandle);

    remoteHandle = CeCreateFile(tmpFile.utf16(), GENERIC_READ, FILE_SHARE_READ, 0, OPEN_EXISTING, 0, 0);

    if (remoteHandle == INVALID_HANDLE_VALUE)

        return false;

    if (!CeGetFileTime(remoteHandle, fTime, NULL, NULL)) {

        CeCloseHandle(remoteHandle);

        return false;

    }

    CeCloseHandle(remoteHandle);

    CeDeleteFile(tmpFile.utf16());

    return true;

}

bool ActiveSyncConnection::fileCreationTime(const QString &fileName, FILETIME* deviceCreationTime) const

{

    HANDLE deviceHandle = CeCreateFile(fileName.utf16(), GENERIC_READ, FILE_SHARE_READ, NULL, OPEN_EXISTING, 0, 0);

    if (deviceHandle == INVALID_HANDLE_VALUE)

        return false;

    bool result = true;

    if (!CeGetFileTime(deviceHandle, deviceCreationTime, NULL, NULL))

        result = false;

    CeCloseHandle(deviceHandle);

    return result;

}