int UIDnDMimeData::setData(const QString &mimeType)
{
    LogFlowFunc(("mimeType=%s, dataType=%s\n",
                 mimeType.toAscii().constData(), m_vaData.typeName()));

    int rc = VINF_SUCCESS;

    switch (m_vaData.type())
    {
        case QVariant::String: /* Plain text. */
        {
            QMimeData::setText(m_vaData.toString());
            break;
        }

        case QVariant::ByteArray: /* Raw byte data. */
        {
            QMimeData::setData(mimeType, m_vaData.toByteArray());
            break;
        }

        case QVariant::StringList: /* URI. */
        {
            QList<QVariant> lstData = m_vaData.toList();
            QList<QUrl> lstURL;
            for (int i = 0; i < lstData.size(); i++)
            {
                QFileInfo fileInfo(lstData.at(i).toString());
#ifdef DEBUG
                LogFlowFunc(("\tURL: %s (fExists=%RTbool, fIsDir=%RTbool, cb=%RU64)\n",
                             fileInfo.absoluteFilePath().constData(), fileInfo.exists(),
                             fileInfo.isDir(), fileInfo.size()));
#endif
                lstURL << QUrl::fromLocalFile(fileInfo.absoluteFilePath());
            }
            LogFlowFunc(("Number of URLs: %d\n",  lstURL.size()));

            if (RT_SUCCESS(rc))
                QMimeData::setUrls(lstURL);
            break;
        }

        default:
            rc = VERR_NOT_SUPPORTED;
            break;
    }

    LogFlowFuncLeaveRC(rc);
    return rc;
}

int VBoxNetBaseService::waitForIntNetEvent(int cMillis)
{
    INTNETIFWAITREQ WaitReq;
    LogFlowFunc(("ENTER:cMillis: %d\n", cMillis));
    WaitReq.Hdr.u32Magic = SUPVMMR0REQHDR_MAGIC;
    WaitReq.Hdr.cbReq = sizeof(WaitReq);
    WaitReq.pSession = m->m_pSession;
    WaitReq.hIf = m->m_hIf;
    WaitReq.cMillies = cMillis;

    int rc = SUPR3CallVMMR0Ex(NIL_RTR0PTR, NIL_VMCPUID, VMMR0_DO_INTNET_IF_WAIT, 0, &WaitReq.Hdr);
    LogFlowFuncLeaveRC(rc);
    return rc;
}

int DnDURIList::AppendURIPath(const char *pszURI, uint32_t fFlags)
{
    AssertPtrReturn(pszURI, VERR_INVALID_POINTER);

    /** @todo Check for string termination?  */
#ifdef DEBUG_andy
    LogFlowFunc(("pszPath=%s, fFlags=0x%x\n", pszURI, fFlags));
#endif
    int rc = VINF_SUCCESS;

    /* Query the path component of a file URI. If this hasn't a
     * file scheme NULL is returned. */
    char *pszSrcPath = RTUriFilePath(pszURI);
    if (pszSrcPath)
    {
        /* Add the path to our internal file list (recursive in
         * the case of a directory). */
        size_t cbPathLen = RTPathStripTrailingSlash(pszSrcPath);
        if (cbPathLen)
        {
            char *pszFileName = RTPathFilename(pszSrcPath);
            if (pszFileName)
            {
                Assert(pszFileName >= pszSrcPath);
                size_t cchDstBase = (fFlags & DNDURILIST_FLAGS_ABSOLUTE_PATHS)
                                  ? 0 /* Use start of path as root. */
                                  : pszFileName - pszSrcPath;
                char *pszDstPath = &pszSrcPath[cchDstBase];
                m_lstRoot.append(pszDstPath);

                LogFlowFunc(("pszFilePath=%s, pszFileName=%s, pszRoot=%s\n",
                             pszSrcPath, pszFileName, pszDstPath));

                rc = appendPathRecursive(pszSrcPath, pszSrcPath, pszSrcPath, cchDstBase, fFlags);
            }
            else
                rc = VERR_PATH_NOT_FOUND;
        }
        else
            rc = VERR_INVALID_PARAMETER;

        RTStrFree(pszSrcPath);
    }
    else
        rc = VERR_INVALID_PARAMETER;

    LogFlowFuncLeaveRC(rc);
    return rc;
}

DECLCALLBACK(int) VBoxClipboardStop(void *pInstance)
{
    AssertPtrReturn(pInstance, VERR_INVALID_POINTER);

    LogFunc(("Stopping pInstance=%p\n", pInstance));

    PVBOXCLIPBOARDCONTEXT pCtx = (PVBOXCLIPBOARDCONTEXT)pInstance;
    AssertPtr(pCtx);

    VbglR3ClipboardDisconnect(pCtx->u32ClientID);
    pCtx->u32ClientID = 0;

    LogFlowFuncLeaveRC(VINF_SUCCESS);
    return VINF_SUCCESS;
}

int GuestCtrlCallback::Init(eVBoxGuestCtrlCallbackType enmType)
{
    LogFlowFuncEnter();

    AssertReturn(enmType > VBOXGUESTCTRLCALLBACKTYPE_UNKNOWN, VERR_INVALID_PARAMETER);
    Assert((pvData == NULL) && !cbData);

    switch (enmType)
    {
        case VBOXGUESTCTRLCALLBACKTYPE_EXEC_START:
        {
            pvData = (PCALLBACKDATAEXECSTATUS)RTMemAlloc(sizeof(CALLBACKDATAEXECSTATUS));
            AssertPtrReturn(pvData, VERR_NO_MEMORY);
            RT_BZERO(pvData, sizeof(CALLBACKDATAEXECSTATUS));
            cbData = sizeof(CALLBACKDATAEXECSTATUS);
            break;
        }

        case VBOXGUESTCTRLCALLBACKTYPE_EXEC_OUTPUT:
        {
            pvData = (PCALLBACKDATAEXECOUT)RTMemAlloc(sizeof(CALLBACKDATAEXECOUT));
            AssertPtrReturn(pvData, VERR_NO_MEMORY);
            RT_BZERO(pvData, sizeof(CALLBACKDATAEXECOUT));
            cbData = sizeof(CALLBACKDATAEXECOUT);
            break;
        }

        case VBOXGUESTCTRLCALLBACKTYPE_EXEC_INPUT_STATUS:
        {
            PCALLBACKDATAEXECINSTATUS pData = (PCALLBACKDATAEXECINSTATUS)RTMemAlloc(sizeof(CALLBACKDATAEXECINSTATUS));
            AssertPtrReturn(pData, VERR_NO_MEMORY);
            RT_BZERO(pData, sizeof(CALLBACKDATAEXECINSTATUS));
            cbData = sizeof(CALLBACKDATAEXECINSTATUS);
            break;
        }

        default:
            AssertMsgFailed(("Unknown callback type specified (%d)\n", enmType));
            break;
    }

    int rc = GuestCtrlEvent::Init();
    if (RT_SUCCESS(rc))
        mType  = enmType;

    LogFlowFuncLeaveRC(rc);
    return rc;
}

int DnDURIList::AppendNativePathsFromList(const RTCList<RTCString> &lstNativePaths,
                                          uint32_t fFlags)
{
    int rc = VINF_SUCCESS;

    for (size_t i = 0; i < lstNativePaths.size(); i++)
    {
        const RTCString &strPath = lstNativePaths.at(i);
        rc = AppendNativePath(strPath.c_str(), fFlags);
        if (RT_FAILURE(rc))
            break;
    }

    LogFlowFuncLeaveRC(rc);
    return rc;
}

int GuestFile::i_seekAt(int64_t iOffset, GUEST_FILE_SEEKTYPE eSeekType,
                        uint32_t uTimeoutMS, uint64_t *puOffset)
{
    LogFlowThisFunc(("iOffset=%RI64, uTimeoutMS=%RU32\n",
                     iOffset, uTimeoutMS));

    AutoWriteLock alock(this COMMA_LOCKVAL_SRC_POS);

    int vrc;

    GuestWaitEvent *pEvent = NULL;
    GuestEventTypes eventTypes;
    try
    {
        eventTypes.push_back(VBoxEventType_OnGuestFileStateChanged);
        eventTypes.push_back(VBoxEventType_OnGuestFileOffsetChanged);

        vrc = registerWaitEvent(eventTypes, &pEvent);
    }
    catch (std::bad_alloc)
    {
        vrc = VERR_NO_MEMORY;
    }

    if (RT_FAILURE(vrc))
        return vrc;

    /* Prepare HGCM call. */
    VBOXHGCMSVCPARM paParms[4];
    int i = 0;
    paParms[i++].setUInt32(pEvent->ContextID());
    paParms[i++].setUInt32(mData.mID /* File handle */);
    paParms[i++].setUInt32(eSeekType /* Seek method */);
    /** @todo uint64_t vs. int64_t! */
    paParms[i++].setUInt64((uint64_t)iOffset /* Offset (in bytes) to start reading */);

    alock.release(); /* Drop write lock before sending. */

    vrc = sendCommand(HOST_FILE_SEEK, i, paParms);
    if (RT_SUCCESS(vrc))
        vrc = i_waitForOffsetChange(pEvent, uTimeoutMS, puOffset);

    unregisterWaitEvent(pEvent);

    LogFlowFuncLeaveRC(vrc);
    return vrc;
}

DECLCALLBACK(int) VBoxSeamlessInit(const PVBOXSERVICEENV pEnv, void **ppInstance)
{
    LogFlowFuncEnter();

    PVBOXSEAMLESSCONTEXT pCtx = &g_Ctx; /* Only one instance at the moment. */
    AssertPtr(pCtx);

    pCtx->pEnv     = pEnv;
    pCtx->hModHook = NIL_RTLDRMOD;

    OSVERSIONINFO OSinfo;
    OSinfo.dwOSVersionInfoSize = sizeof (OSinfo);
    GetVersionEx (&OSinfo);

    int rc;

    /* We have to jump out here when using NT4, otherwise it complains about
       a missing API function "UnhookWinEvent" used by the dynamically loaded VBoxHook.dll below */
    if (OSinfo.dwMajorVersion <= 4)         /* Windows NT 4.0 or older */
    {
        Log(("VBoxTray: VBoxSeamlessInit: Windows NT 4.0 or older not supported!\n"));
        rc = VERR_NOT_SUPPORTED;
    }
    else
    {
        /* Will fail if SetWinEventHook is not present (version < NT4 SP6 apparently) */
        rc = RTLdrLoadAppPriv(VBOXHOOK_DLL_NAME, &pCtx->hModHook);
        if (RT_SUCCESS(rc))
        {
            *(PFNRT *)&pCtx->pfnVBoxHookInstallWindowTracker = RTLdrGetFunction(pCtx->hModHook, "VBoxHookInstallWindowTracker");
            *(PFNRT *)&pCtx->pfnVBoxHookRemoveWindowTracker  = RTLdrGetFunction(pCtx->hModHook, "VBoxHookRemoveWindowTracker");

            /* rc should contain success status */
            AssertRC(rc); /** @todo r=andy Makes no sense here!? */

            VBoxSeamlessSetSupported(TRUE);

            *ppInstance = pCtx;
        }
        else
            LogFlowFunc(("Unable to load %s, rc=%Rrc\n", VBOXHOOK_DLL_NAME, rc));
    }

    LogFlowFuncLeaveRC(rc);
    return rc;
}

STDMETHODIMP GuestFile::Seek(LONG64 aOffset, FileSeekType_T aType)
{
#ifndef VBOX_WITH_GUEST_CONTROL
    ReturnComNotImplemented();
#else
    LogFlowThisFuncEnter();

    AutoCaller autoCaller(this);
    if (FAILED(autoCaller.rc())) return autoCaller.rc();

    HRESULT hr = S_OK;

    GUEST_FILE_SEEKTYPE eSeekType;
    switch (aType)
    {
        case FileSeekType_Set:
            eSeekType = GUEST_FILE_SEEKTYPE_BEGIN;
            break;

        case FileSeekType_Current:
            eSeekType = GUEST_FILE_SEEKTYPE_CURRENT;
            break;

        default:
            return setError(E_INVALIDARG, tr("Invalid seek type specified"));
            break; /* Never reached. */
    }

    int vrc = seekAt(aOffset, eSeekType,
                     30 * 1000 /* 30s timeout */, NULL /* puOffset */);
    if (RT_FAILURE(vrc))
    {
        switch (vrc)
        {
            default:
                hr = setError(VBOX_E_IPRT_ERROR,
                              tr("Seeking file \"%s\" (to offset %RI64) failed: %Rrc"),
                              mData.mOpenInfo.mFileName.c_str(), aOffset, vrc);
                break;
        }
    }

    LogFlowFuncLeaveRC(vrc);
    return hr;
#endif /* VBOX_WITH_GUEST_CONTROL */
}

HRESULT GuestFile::seek(LONG64 aOffset, FileSeekOrigin_T aWhence, LONG64 *aNewOffset)
{
    LogFlowThisFuncEnter();

    HRESULT hr = S_OK;

    GUEST_FILE_SEEKTYPE eSeekType;
    switch (aWhence)
    {
        case FileSeekOrigin_Begin:
            eSeekType = GUEST_FILE_SEEKTYPE_BEGIN;
            break;

        case FileSeekOrigin_Current:
            eSeekType = GUEST_FILE_SEEKTYPE_CURRENT;
            break;

        case FileSeekOrigin_End:
            eSeekType = GUEST_FILE_SEEKTYPE_END;
            break;

        default:
            return setError(E_INVALIDARG, tr("Invalid seek type specified"));
            break; /* Never reached. */
    }

    uint64_t uNewOffset;
    int vrc = i_seekAt(aOffset, eSeekType,
                       30 * 1000 /* 30s timeout */, &uNewOffset);
    if (RT_SUCCESS(vrc))
        *aNewOffset = RT_MIN(uNewOffset, (uint64_t)INT64_MAX);
    else
    {
        switch (vrc)
        {
            default:
                hr = setError(VBOX_E_IPRT_ERROR,
                              tr("Seeking file \"%s\" (to offset %RI64) failed: %Rrc"),
                              mData.mOpenInfo.mFileName.c_str(), aOffset, vrc);
                break;
        }
    }

    LogFlowFuncLeaveRC(vrc);
    return hr;
}

/**
 * This function evaluate file name.
 * @param pu8Payload
 * @param cbPayload
 * @param cbFileName
 * @return VINF_SUCCESS -
 *         VERR_INVALID_PARAMETER -
 */
DECLINLINE(int) tftpSecurityFilenameCheck(PNATState pData, PCTFTPSESSION pcTftpSession)
{
    size_t cbSessionFilename = 0;
    int rc = VINF_SUCCESS;
    AssertPtrReturn(pcTftpSession, VERR_INVALID_PARAMETER);
    cbSessionFilename = RTStrNLen((const char *)pcTftpSession->pszFilename, TFTP_FILENAME_MAX);
    if (   !RTStrNCmp((const char*)pcTftpSession->pszFilename, "../", 3)
        || (pcTftpSession->pszFilename[cbSessionFilename - 1] == '/')
        ||  RTStrStr((const char *)pcTftpSession->pszFilename, "/../"))
        rc = VERR_FILE_NOT_FOUND;

    /* only allow exported prefixes */
    if (   RT_SUCCESS(rc)
        && !tftp_prefix)
        rc = VERR_INTERNAL_ERROR;
    LogFlowFuncLeaveRC(rc);
    return rc;
}

/** @todo GuestDnDResponse *pResp needs to go. */
int GuestDnDBase::waitForEvent(GuestDnDCallbackEvent *pEvent, GuestDnDResponse *pResp, RTMSINTERVAL msTimeout)
{
    AssertPtrReturn(pEvent, VERR_INVALID_POINTER);
    AssertPtrReturn(pResp, VERR_INVALID_POINTER);

    int rc;

    LogFlowFunc(("msTimeout=%RU32\n", msTimeout));

    uint64_t tsStart = RTTimeMilliTS();
    do
    {
        /*
         * Wait until our desired callback triggered the
         * wait event. As we don't want to block if the guest does not
         * respond, do busy waiting here.
         */
        rc = pEvent->Wait(500 /* ms */);
        if (RT_SUCCESS(rc))
        {
            rc = pEvent->Result();
            LogFlowFunc(("Callback done, result is %Rrc\n", rc));
            break;
        }
        else if (rc == VERR_TIMEOUT) /* Continue waiting. */
            rc = VINF_SUCCESS;

        if (   msTimeout != RT_INDEFINITE_WAIT
            && RTTimeMilliTS() - tsStart > msTimeout)
        {
            rc = VERR_TIMEOUT;
            LogRel2(("DnD: Error: Guest did not respond within time\n"));
        }
        else if (pResp->isProgressCanceled()) /** @todo GuestDnDResponse *pResp needs to go. */
        {
            LogRel2(("DnD: Operation was canceled by user\n"));
            rc = VERR_CANCELLED;
        }

    } while (RT_SUCCESS(rc));

    LogFlowFuncLeaveRC(rc);
    return rc;
}

DECLCALLBACK(int) VBoxClipboardInit(const PVBOXSERVICEENV pEnv, void **ppInstance)
{
    LogFlowFuncEnter();

    PVBOXCLIPBOARDCONTEXT pCtx = &g_Ctx; /* Only one instance for now. */
    AssertPtr(pCtx);

    if (pCtx->pEnv)
    {
        /* Clipboard was already initialized. 2 or more instances are not supported. */
        return VERR_NOT_SUPPORTED;
    }

    if (VbglR3AutoLogonIsRemoteSession())
    {
        /* Do not use clipboard for remote sessions. */
        LogRel(("Clipboard: Clipboard has been disabled for a remote session\n"));
        return VERR_NOT_SUPPORTED;
    }

    RT_BZERO(pCtx, sizeof(VBOXCLIPBOARDCONTEXT));

    pCtx->pEnv = pEnv;

    /* Check that new Clipboard API is available */
    VBoxClipboardWinCheckAndInitNewAPI(&pCtx->Win.newAPI);

    int rc = VbglR3ClipboardConnect(&pCtx->u32ClientID);
    if (RT_SUCCESS(rc))
    {
        rc = vboxClipboardCreateWindow(pCtx);
        if (RT_SUCCESS(rc))
        {
            *ppInstance = pCtx;
        }
        else
        {
            VbglR3ClipboardDisconnect(pCtx->u32ClientID);
        }
    }

    LogFlowFuncLeaveRC(rc);
    return rc;
}

int GuestDirectory::parseData(GuestProcessStreamBlock &streamBlock)
{
    LogFlowThisFunc(("cbStream=%RU32\n", mData.mStream.GetSize()));

    AutoWriteLock alock(this COMMA_LOCKVAL_SRC_POS);

    int rc;
    do
    {
        /* Try parsing the data to see if the current block is complete. */
        rc = mData.mStream.ParseBlock(streamBlock);
        if (streamBlock.GetCount())
            break;

    } while (RT_SUCCESS(rc));

    LogFlowFuncLeaveRC(rc);
    return rc;
}

STDMETHODIMP GuestFile::ReadAt(LONG64 aOffset, ULONG aToRead, ULONG aTimeoutMS, ComSafeArrayOut(BYTE, aData))
{
#ifndef VBOX_WITH_GUEST_CONTROL
    ReturnComNotImplemented();
#else
    if (aToRead == 0)
        return setError(E_INVALIDARG, tr("The size to read is zero"));
    CheckComArgOutSafeArrayPointerValid(aData);

    AutoCaller autoCaller(this);
    if (FAILED(autoCaller.rc())) return autoCaller.rc();

    com::SafeArray<BYTE> data((size_t)aToRead);
    Assert(data.size() >= aToRead);

    HRESULT hr = S_OK;

    size_t cbRead;
    int vrc = readDataAt(aOffset, aToRead, aTimeoutMS,
                         data.raw(), aToRead, &cbRead);
    if (RT_SUCCESS(vrc))
    {
        if (data.size() != cbRead)
            data.resize(cbRead);
        data.detachTo(ComSafeArrayOutArg(aData));
    }
    else
    {
        switch (vrc)
        {
            default:
                hr = setError(VBOX_E_IPRT_ERROR,
                              tr("Reading from file \"%s\" (at offset %RU64) failed: %Rrc"),
                              mData.mOpenInfo.mFileName.c_str(), aOffset, vrc);
                break;
        }
    }

    LogFlowFuncLeaveRC(vrc);
    return hr;
#endif /* VBOX_WITH_GUEST_CONTROL */
}

int UIDnDHandler::retrieveData(      Qt::DropAction  dropAction,
                               const QString        &strMIMEType,
                                     QVariant::Type  vaType,
                                     QVariant       &vaData)
{
    QVector<uint8_t> vecData;
    int rc = retrieveData(dropAction, strMIMEType, vecData);
    if (RT_SUCCESS(rc))
    {
        /* If no/an invalid variant is set, try to guess the variant type.
         * This can happen on OS X. */
        if (vaType == QVariant::Invalid)
            vaType = UIDnDMIMEData::getVariantType(strMIMEType);

        rc = UIDnDMIMEData::getDataAsVariant(vecData, strMIMEType, vaType, vaData);
    }

    LogFlowFuncLeaveRC(rc);
    return rc;
}

int GuestCtrlEvent::Cancel(void)
{
    LogFlowThisFuncEnter();

    int rc = VINF_SUCCESS;
    if (!ASMAtomicReadBool(&fCompleted))
    {
        if (!ASMAtomicReadBool(&fCanceled))
        {
            ASMAtomicXchgBool(&fCanceled, true);

            LogFlowThisFunc(("Cancelling ...\n"));
            rc = hEventSem != NIL_RTSEMEVENT
               ? RTSemEventSignal(hEventSem) : VINF_SUCCESS;
        }
    }

    LogFlowFuncLeaveRC(rc);
    return rc;
}

int UIDnDHandler::dragStop(ulong screenID)
{
    int rc;
#ifdef VBOX_WITH_DRAG_AND_DROP_GH

    NOREF(screenID);

    reset();
    rc = VINF_SUCCESS;

#else /* !VBOX_WITH_DRAG_AND_DROP_GH */

    NOREF(screenID);

    rc = VERR_NOT_SUPPORTED;

#endif /* VBOX_WITH_DRAG_AND_DROP_GH */

    LogFlowFuncLeaveRC(rc);
    return rc;
}

int slirpTftpInput(PNATState pData, struct mbuf *pMbuf)
{
    PTFTPIPHDR pTftpIpHeader = NULL;
    AssertPtr(pData);
    AssertPtr(pMbuf);
    pTftpIpHeader = mtod(pMbuf, PTFTPIPHDR);

    switch(RT_N2H_U16(pTftpIpHeader->u16TftpOpType))
    {
        case TFTP_RRQ:
            tftpProcessRRQ(pData, pTftpIpHeader, m_length(pMbuf, NULL));
            break;

        case TFTP_ACK:
            tftpProcessACK(pData, pTftpIpHeader);
            break;
        default:;
    }
    LogFlowFuncLeaveRC(VINF_SUCCESS);
    return VINF_SUCCESS;
}

/* S/G API */
int VBoxNetBaseService::sendBufferOnWire(PCINTNETSEG paSegs, size_t cSegs, size_t cbFrame)
{
    /* Allocate frame */
    PINTNETHDR pHdr = NULL;
    uint8_t *pbFrame = NULL;
    int rc = IntNetRingAllocateFrame(&m->m_pIfBuf->Send, (uint32_t)cbFrame, &pHdr, (void **)&pbFrame);
    AssertRCReturn(rc, rc);

    /* Now we fill pvFrame with S/G above */
    size_t offFrame = 0;
    for (size_t idxSeg = 0; idxSeg < cSegs; ++idxSeg)
    {
        memcpy(&pbFrame[offFrame], paSegs[idxSeg].pv, paSegs[idxSeg].cb);
        offFrame += paSegs[idxSeg].cb;
    }

    /* Commit */
    IntNetRingCommitFrameEx(&m->m_pIfBuf->Send, pHdr, cbFrame);

    LogFlowFuncLeaveRC(rc);
    return rc;
}