/* -*- 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 <comphelper/processfactory.hxx>

#include <com/sun/star/task/DocumentPasswordRequest.hpp>
#include <com/sun/star/task/DocumentPasswordRequest2.hpp>
#include <com/sun/star/task/DocumentMSPasswordRequest.hpp>
#include <com/sun/star/task/DocumentMSPasswordRequest2.hpp>
#include <com/sun/star/task/MasterPasswordRequest.hpp>
#include <com/sun/star/task/XInteractionAbort.hpp>
#include <com/sun/star/task/XInteractionPassword.hpp>
#include <com/sun/star/task/XInteractionPassword2.hpp>
#include <com/sun/star/task/XInteractionRetry.hpp>
#include <com/sun/star/ucb/XInteractionSupplyAuthentication2.hpp>
#include <com/sun/star/ucb/URLAuthenticationRequest.hpp>

#include <osl/diagnose.h>
#include <rtl/digest.h>
#include <osl/mutex.hxx>
#include <tools/errcode.hxx>
#include <vcl/msgbox.hxx>
#include <vcl/abstdlg.hxx>
#include <vcl/svapp.hxx>

#include "ids.hrc"
#include "getcontinuations.hxx"
#include "passwordcontainer.hxx"
#include "loginerr.hxx"
#include "logindlg.hxx"
#include "masterpasscrtdlg.hxx"
#include "masterpassworddlg.hxx"
#include "passworddlg.hxx"

#include "iahndl.hxx"

#include <boost/scoped_ptr.hpp>

using namespace com::sun::star;

namespace {

void
executeLoginDialog(
    vcl::Window * pParent,
    LoginErrorInfo & rInfo,
    OUString const & rRealm)
{
    try
    {
        SolarMutexGuard aGuard;

        bool bAccount = (rInfo.GetFlags() & LOGINERROR_FLAG_MODIFY_ACCOUNT) != 0;
        bool bSavePassword   = rInfo.GetCanRememberPassword();
        bool bCanUseSysCreds = rInfo.GetCanUseSystemCredentials();

        sal_uInt16 nFlags = 0;
        if (rInfo.GetPath().isEmpty())
            nFlags |= LF_NO_PATH;
        if (rInfo.GetErrorText().isEmpty())
            nFlags |= LF_NO_ERRORTEXT;
        if (!bAccount)
            nFlags |= LF_NO_ACCOUNT;
        if (!(rInfo.GetFlags() & LOGINERROR_FLAG_MODIFY_USER_NAME))
            nFlags |= LF_USERNAME_READONLY;

        if (!bSavePassword)
            nFlags |= LF_NO_SAVEPASSWORD;

        if (!bCanUseSysCreds)
            nFlags |= LF_NO_USESYSCREDS;

        boost::scoped_ptr< LoginDialog > xDialog(
                new LoginDialog(pParent, nFlags, rInfo.GetServer(), rRealm));
        if (!rInfo.GetErrorText().isEmpty())
            xDialog->SetErrorText(rInfo.GetErrorText());
        xDialog->SetName(rInfo.GetUserName());
        if (bAccount)
            xDialog->ClearAccount();
        else
            xDialog->ClearPassword();
        xDialog->SetPassword(rInfo.GetPassword());

        if (bSavePassword)
        {
            boost::scoped_ptr< ResMgr > xManager(ResMgr::CreateResMgr("uui"));
            xDialog->SetSavePasswordText(
                ResId(rInfo.GetIsRememberPersistent()
                          ? RID_SAVE_PASSWORD
                          : RID_KEEP_PASSWORD,
                      *xManager.get()));

            xDialog->SetSavePassword(rInfo.GetIsRememberPassword());
        }

        if ( bCanUseSysCreds )
            xDialog->SetUseSystemCredentials( rInfo.GetIsUseSystemCredentials() );

        rInfo.SetResult(xDialog->Execute() == RET_OK ? ERRCODE_BUTTON_OK :
                                                       ERRCODE_BUTTON_CANCEL);
        rInfo.SetUserName(xDialog->GetName());
        rInfo.SetPassword(xDialog->GetPassword());
        rInfo.SetAccount(xDialog->GetAccount());
        rInfo.SetIsRememberPassword(xDialog->IsSavePassword());

        if ( bCanUseSysCreds )
          rInfo.SetIsUseSystemCredentials( xDialog->IsUseSystemCredentials() );
    }
    catch (std::bad_alloc const &)
    {
        throw uno::RuntimeException("out of memory");
    }
}

void getRememberModes(
    uno::Sequence< ucb::RememberAuthentication > const & rRememberModes,
    ucb::RememberAuthentication & rPreferredMode,
    ucb::RememberAuthentication & rAlternateMode )
{
    sal_Int32 nCount = rRememberModes.getLength();
    OSL_ENSURE( (nCount > 0) && (nCount < 4),
                "ucb::RememberAuthentication sequence size mismatch!" );
    if ( nCount == 1 )
    {
        rPreferredMode = rAlternateMode = rRememberModes[ 0 ];
        return;
    }
    else
    {
        bool bHasRememberModeSession = false;
        bool bHasRememberModePersistent = false;

        for (sal_Int32 i = 0; i < nCount; ++i)
        {
            switch ( rRememberModes[i] )
            {
            case ucb::RememberAuthentication_NO:
                break;
            case ucb::RememberAuthentication_SESSION:
                bHasRememberModeSession = true;
                break;
            case ucb::RememberAuthentication_PERSISTENT:
                bHasRememberModePersistent = true;
                break;
            default:
                OSL_TRACE( "Unsupported RememberAuthentication value" );
                break;
            }
        }

        if (bHasRememberModePersistent)
        {
            rPreferredMode = ucb::RememberAuthentication_PERSISTENT;
            if (bHasRememberModeSession)
                rAlternateMode = ucb::RememberAuthentication_SESSION;
            else
                rAlternateMode = ucb::RememberAuthentication_NO;
        }
        else
        {
            rPreferredMode = ucb::RememberAuthentication_SESSION;
            rAlternateMode = ucb::RememberAuthentication_NO;
        }
    }
}

void
handleAuthenticationRequest_(
    vcl::Window * pParent,
    uno::Reference< task::XInteractionHandler2 > const & xIH,
    uno::Reference< uno::XComponentContext > const & xContext,
    ucb::AuthenticationRequest const & rRequest,
    uno::Sequence< uno::Reference< task::XInteractionContinuation > > const &
        rContinuations,
    const OUString & rURL)
{
    uno::Reference< task::XInteractionRetry > xRetry;
    uno::Reference< task::XInteractionAbort > xAbort;
    uno::Reference< ucb::XInteractionSupplyAuthentication >
        xSupplyAuthentication;
    uno::Reference< ucb::XInteractionSupplyAuthentication2 >
        xSupplyAuthentication2;
    getContinuations(rContinuations, &xRetry, &xAbort, &xSupplyAuthentication);
    if (xSupplyAuthentication.is())
        xSupplyAuthentication2.set(xSupplyAuthentication, uno::UNO_QUERY);


    // First, try to obtain credentials from password container service.
    uui::PasswordContainerHelper aPwContainerHelper(xContext);
    if (aPwContainerHelper.handleAuthenticationRequest(rRequest,
                                                       xSupplyAuthentication,
                                                       rURL,
                                                       xIH))
    {
        xSupplyAuthentication->select();
        return;
    }


    // Second, try to obtain credentials from user via password dialog.
    ucb::RememberAuthentication eDefaultRememberMode
        = ucb::RememberAuthentication_SESSION;
    ucb::RememberAuthentication ePreferredRememberMode
        = eDefaultRememberMode;
    ucb::RememberAuthentication eAlternateRememberMode
        = ucb::RememberAuthentication_NO;

    if (xSupplyAuthentication.is())
    {
        getRememberModes(
            xSupplyAuthentication->getRememberPasswordModes(
                eDefaultRememberMode),
            ePreferredRememberMode,
            eAlternateRememberMode);
    }

    bool bCanUseSystemCredentials;
    sal_Bool bDefaultUseSystemCredentials;
    if (xSupplyAuthentication2.is())
    {
        bCanUseSystemCredentials
            = xSupplyAuthentication2->canUseSystemCredentials(
                bDefaultUseSystemCredentials);
    }
    else
    {
        bCanUseSystemCredentials = false;
        bDefaultUseSystemCredentials = sal_False;
    }

    LoginErrorInfo aInfo;
    aInfo.SetTitle(rRequest.ServerName);
    aInfo.SetServer(rRequest.ServerName);
    if (rRequest.HasAccount)
        aInfo.SetAccount(rRequest.Account);
    if (rRequest.HasUserName)
        aInfo.SetUserName(rRequest.UserName);
    if (rRequest.HasPassword)
        aInfo.SetPassword(rRequest.Password);
    aInfo.SetErrorText(rRequest.Diagnostic);

    aInfo.SetCanRememberPassword(
        ePreferredRememberMode != eAlternateRememberMode);
    aInfo.SetIsRememberPassword(
        ePreferredRememberMode == eDefaultRememberMode);
    aInfo.SetIsRememberPersistent(
        ePreferredRememberMode == ucb::RememberAuthentication_PERSISTENT);

    aInfo.SetCanUseSystemCredentials(bCanUseSystemCredentials);
    aInfo.SetIsUseSystemCredentials( bDefaultUseSystemCredentials );
    aInfo.SetModifyAccount(rRequest.HasAccount
                           && xSupplyAuthentication.is()
                           && xSupplyAuthentication->canSetAccount());
    aInfo.SetModifyUserName(rRequest.HasUserName
                            && xSupplyAuthentication.is()
                            && xSupplyAuthentication->canSetUserName());
    executeLoginDialog(pParent,
                       aInfo,
                       rRequest.HasRealm ? rRequest.Realm : OUString());
    switch (aInfo.GetResult())
    {
    case ERRCODE_BUTTON_OK:
        if (xSupplyAuthentication.is())
        {
            if (xSupplyAuthentication->canSetUserName())
                xSupplyAuthentication->setUserName(aInfo.GetUserName());
            if (xSupplyAuthentication->canSetPassword())
                xSupplyAuthentication->setPassword(aInfo.GetPassword());

            if (ePreferredRememberMode != eAlternateRememberMode)
            {
                // user had the choice.
                if (aInfo.GetIsRememberPassword())
                    xSupplyAuthentication->setRememberPassword(
                        ePreferredRememberMode);
                else
                    xSupplyAuthentication->setRememberPassword(
                        eAlternateRememberMode);
            }
            else
            {
                // user had no choice.
                xSupplyAuthentication->setRememberPassword(
                    ePreferredRememberMode);
            }

            if (rRequest.HasRealm)
            {
                if (xSupplyAuthentication->canSetRealm())
                    xSupplyAuthentication->setRealm(aInfo.GetAccount());
            }
            else if (xSupplyAuthentication->canSetAccount())
                xSupplyAuthentication->setAccount(aInfo.GetAccount());

            if ( xSupplyAuthentication2.is() && bCanUseSystemCredentials )
                xSupplyAuthentication2->setUseSystemCredentials(
                    aInfo.GetIsUseSystemCredentials() );

            xSupplyAuthentication->select();
        }


        // Third, store credentials in password container.

          if ( aInfo.GetIsUseSystemCredentials() )
          {
              if (aInfo.GetIsRememberPassword())
              {
                  if (!aPwContainerHelper.addRecord(
                          !rURL.isEmpty() ? rURL : rRequest.ServerName,
                          OUString(), // empty u/p -> sys creds
                          uno::Sequence< OUString >(),
                          xIH,
                          ePreferredRememberMode
                              == ucb::RememberAuthentication_PERSISTENT))
                  {
                      xSupplyAuthentication->setRememberPassword(
                          ucb::RememberAuthentication_NO);
                  }
              }
              else if (eAlternateRememberMode
                           == ucb::RememberAuthentication_SESSION)
              {
                  if (!aPwContainerHelper.addRecord(
                          !rURL.isEmpty() ? rURL : rRequest.ServerName,
                          OUString(), // empty u/p -> sys creds
                          uno::Sequence< OUString >(),
                          xIH,
                          false /* SESSION */))
                  {
                      xSupplyAuthentication->setRememberPassword(
                          ucb::RememberAuthentication_NO);
                  }
              }
          }
          // Empty user name can not be valid:
          else if (!aInfo.GetUserName().isEmpty())
          {
              uno::Sequence< OUString >
                  aPassList(aInfo.GetAccount().isEmpty() ? 1 : 2);
              aPassList[0] = aInfo.GetPassword();
              if (!aInfo.GetAccount().isEmpty())
                  aPassList[1] = aInfo.GetAccount();

              if (aInfo.GetIsRememberPassword())
              {
                  if (!aPwContainerHelper.addRecord(
                          !rURL.isEmpty() ? rURL : rRequest.ServerName,
                          aInfo.GetUserName(),
                          aPassList,
                          xIH,
                          ePreferredRememberMode
                              == ucb::RememberAuthentication_PERSISTENT))
                  {
                      xSupplyAuthentication->setRememberPassword(
                          ucb::RememberAuthentication_NO);
                  }
              }
              else if (eAlternateRememberMode
                           == ucb::RememberAuthentication_SESSION)
              {
                  if (!aPwContainerHelper.addRecord(
                          !rURL.isEmpty() ? rURL : rRequest.ServerName,
                          aInfo.GetUserName(),
                          aPassList,
                          xIH,
                          false /* SESSION */))
                  {
                      xSupplyAuthentication->setRememberPassword(
                          ucb::RememberAuthentication_NO);
                  }
              }
          }
          break;

    case ERRCODE_BUTTON_RETRY:
        if (xRetry.is())
            xRetry->select();
        break;

    default:
        if (xAbort.is())
            xAbort->select();
        break;
    }
}

void
executeMasterPasswordDialog(
    vcl::Window * pParent,
    LoginErrorInfo & rInfo,
    task::PasswordRequestMode nMode)
{
    OString aMaster;
    try
    {
        SolarMutexGuard aGuard;

        boost::scoped_ptr< ResMgr > xManager(ResMgr::CreateResMgr("uui"));
        if( nMode == task::PasswordRequestMode_PASSWORD_CREATE )
        {
            boost::scoped_ptr< MasterPasswordCreateDialog > xDialog(
                new MasterPasswordCreateDialog(pParent, xManager.get()));
            rInfo.SetResult(xDialog->Execute()
                == RET_OK ? ERRCODE_BUTTON_OK : ERRCODE_BUTTON_CANCEL);
            aMaster = OUStringToOString(
                xDialog->GetMasterPassword(), RTL_TEXTENCODING_UTF8);
        }
        else
        {
            boost::scoped_ptr< MasterPasswordDialog > xDialog(
                new MasterPasswordDialog(pParent, nMode, xManager.get()));
            rInfo.SetResult(xDialog->Execute()
                == RET_OK ? ERRCODE_BUTTON_OK : ERRCODE_BUTTON_CANCEL);
            aMaster = OUStringToOString(
                xDialog->GetMasterPassword(), RTL_TEXTENCODING_UTF8);
        }
    }
    catch (std::bad_alloc const &)
    {
        throw uno::RuntimeException("out of memory");
    }

    sal_uInt8 aKey[RTL_DIGEST_LENGTH_MD5];
    rtl_digest_PBKDF2(aKey,
                      RTL_DIGEST_LENGTH_MD5,
                      reinterpret_cast< sal_uInt8 const * >(aMaster.getStr()),
                      aMaster.getLength(),
                      reinterpret_cast< sal_uInt8 const * >(
                          "3B5509ABA6BC42D9A3A1F3DAD49E56A51"),
                      32,
                      1000);

    OUStringBuffer aBuffer;
    for (int i = 0; i < RTL_DIGEST_LENGTH_MD5; ++i)
    {
        aBuffer.append(static_cast< sal_Unicode >('a' + (aKey[i] >> 4)));
        aBuffer.append(static_cast< sal_Unicode >('a' + (aKey[i] & 15)));
    }
    rInfo.SetPassword(aBuffer.makeStringAndClear());
}

void
handleMasterPasswordRequest_(
    vcl::Window * pParent,
    task::PasswordRequestMode nMode,
    uno::Sequence< uno::Reference< task::XInteractionContinuation > > const &
        rContinuations)
{
    uno::Reference< task::XInteractionRetry > xRetry;
    uno::Reference< task::XInteractionAbort > xAbort;
    uno::Reference< ucb::XInteractionSupplyAuthentication >
        xSupplyAuthentication;
    getContinuations(rContinuations, &xRetry, &xAbort, &xSupplyAuthentication);
    LoginErrorInfo aInfo;

    // in case of master password a hash code is returned
    executeMasterPasswordDialog(pParent, aInfo, nMode);

    switch (aInfo.GetResult())
    {
    case ERRCODE_BUTTON_OK:
        if (xSupplyAuthentication.is())
        {
            if (xSupplyAuthentication->canSetPassword())
                xSupplyAuthentication->setPassword(aInfo.GetPassword());
            xSupplyAuthentication->select();
        }
        break;

    case ERRCODE_BUTTON_RETRY:
        if (xRetry.is())
            xRetry->select();
        break;

    default:
        if (xAbort.is())
            xAbort->select();
        break;
    }
}

void
executePasswordDialog(
    vcl::Window * pParent,
    LoginErrorInfo & rInfo,
    task::PasswordRequestMode nMode,
    const OUString& aDocName,
    bool bMSCryptoMode,
    bool bIsPasswordToModify,
    bool bIsSimplePasswordRequest )
{
    try
    {
        SolarMutexGuard aGuard;

        boost::scoped_ptr< ResMgr > xManager(ResMgr::CreateResMgr("uui"));
        if( nMode == task::PasswordRequestMode_PASSWORD_CREATE )
        {
            if (bIsSimplePasswordRequest)
            {
                boost::scoped_ptr< PasswordDialog > pDialog(
                    new PasswordDialog( pParent, nMode, xManager.get(), aDocName,
                    bIsPasswordToModify, bIsSimplePasswordRequest ) );
                pDialog->SetMinLen(0);

                rInfo.SetResult( pDialog->Execute() == RET_OK ? ERRCODE_BUTTON_OK : ERRCODE_BUTTON_CANCEL );
                rInfo.SetPassword( pDialog->GetPassword() );
            }
            else
            {
                const sal_uInt16 nMaxPasswdLen = bMSCryptoMode ? 15 : 0;   // 0 -> allow any length

                VclAbstractDialogFactory * pFact = VclAbstractDialogFactory::Create();
                AbstractPasswordToOpenModifyDialog *pTmp = pFact->CreatePasswordToOpenModifyDialog( pParent, 0, nMaxPasswdLen, bIsPasswordToModify );
                boost::scoped_ptr< AbstractPasswordToOpenModifyDialog > pDialog( pTmp );

                rInfo.SetResult( pDialog->Execute() == RET_OK ? ERRCODE_BUTTON_OK : ERRCODE_BUTTON_CANCEL );
                rInfo.SetPassword( pDialog->GetPasswordToOpen() );
                rInfo.SetPasswordToModify( pDialog->GetPasswordToModify() );
                rInfo.SetRecommendToOpenReadonly( pDialog->IsRecommendToOpenReadonly() );
            }
        }
        else // enter password or reenter password
        {
            boost::scoped_ptr< PasswordDialog > pDialog(
                new PasswordDialog( pParent, nMode, xManager.get(), aDocName,
                bIsPasswordToModify, bIsSimplePasswordRequest ) );
            pDialog->SetMinLen(0);

            rInfo.SetResult( pDialog->Execute() == RET_OK ? ERRCODE_BUTTON_OK : ERRCODE_BUTTON_CANCEL );
            rInfo.SetPassword( bIsPasswordToModify ? OUString() : pDialog->GetPassword() );
            rInfo.SetPasswordToModify( bIsPasswordToModify ? pDialog->GetPassword() : OUString() );
        }
    }
    catch (std::bad_alloc const &)
    {
        throw uno::RuntimeException("out of memory",
            uno::Reference< uno::XInterface>());
    }
}

void
handlePasswordRequest_(
    vcl::Window * pParent,
    task::PasswordRequestMode nMode,
    uno::Sequence< uno::Reference< task::XInteractionContinuation > > const &
        rContinuations,
    const OUString& aDocumentName,
    bool bMSCryptoMode,
    bool bIsPasswordToModify,
    bool bIsSimplePasswordRequest = false )
{
    uno::Reference< task::XInteractionRetry > xRetry;
    uno::Reference< task::XInteractionAbort > xAbort;
    uno::Reference< task::XInteractionPassword > xPassword;
    uno::Reference< task::XInteractionPassword2 > xPassword2;
    getContinuations(rContinuations, &xRetry, &xAbort, &xPassword2, &xPassword);

    if ( xPassword2.is() && !xPassword.is() )
        xPassword.set( xPassword2, uno::UNO_QUERY_THROW );

    LoginErrorInfo aInfo;

    executePasswordDialog( pParent, aInfo, nMode,
            aDocumentName, bMSCryptoMode, bIsPasswordToModify, bIsSimplePasswordRequest );

    switch (aInfo.GetResult())
    {
    case ERRCODE_BUTTON_OK:
        OSL_ENSURE( !bIsPasswordToModify || xPassword2.is(), "PasswordToModify is requested, but there is no Interaction!" );
        if (xPassword.is())
        {
            if (xPassword2.is())
            {
                xPassword2->setPasswordToModify( aInfo.GetPasswordToModify() );
                xPassword2->setRecommendReadOnly( aInfo.IsRecommendToOpenReadonly() );
            }

            xPassword->setPassword(aInfo.GetPassword());
            xPassword->select();
        }
        break;

    case ERRCODE_BUTTON_RETRY:
        if (xRetry.is())
            xRetry->select();
        break;

    default:
        if (xAbort.is())
            xAbort->select();
        break;
    }
}

} // namespace

bool
UUIInteractionHelper::handleAuthenticationRequest(
    uno::Reference< task::XInteractionRequest > const & rRequest)
{
    uno::Any aAnyRequest(rRequest->getRequest());

    ucb::URLAuthenticationRequest aURLAuthenticationRequest;
    if (aAnyRequest >>= aURLAuthenticationRequest)
    {
        handleAuthenticationRequest_(getParentProperty(),
                                     getInteractionHandler(),
                                     m_xContext,
                                     aURLAuthenticationRequest,
                                     rRequest->getContinuations(),
                                     aURLAuthenticationRequest.URL);
        return true;
    }

    ucb::AuthenticationRequest aAuthenticationRequest;
    if (aAnyRequest >>= aAuthenticationRequest)
    {
        handleAuthenticationRequest_(getParentProperty(),
                                     getInteractionHandler(),
                                     m_xContext,
                                     aAuthenticationRequest,
                                     rRequest->getContinuations(),
                                     OUString());
        return true;
    }
    return false;
}

bool
UUIInteractionHelper::handleMasterPasswordRequest(
    uno::Reference< task::XInteractionRequest > const & rRequest)
{
    uno::Any aAnyRequest(rRequest->getRequest());

    task::MasterPasswordRequest aMasterPasswordRequest;
    if (aAnyRequest >>= aMasterPasswordRequest)
    {
        handleMasterPasswordRequest_(getParentProperty(),
                                     aMasterPasswordRequest.Mode,
                                     rRequest->getContinuations());
        return true;
    }
    return false;
}

bool
UUIInteractionHelper::handlePasswordRequest(
    uno::Reference< task::XInteractionRequest > const & rRequest)
{
    // parameters to be filled for the call to handlePasswordRequest_
    vcl::Window * pParent = getParentProperty();
    task::PasswordRequestMode nMode = task::PasswordRequestMode_PASSWORD_ENTER;
    uno::Sequence< uno::Reference< task::XInteractionContinuation > > const & rContinuations = rRequest->getContinuations();
    OUString aDocumentName;
    bool bMSCryptoMode          = false;
    bool bIsPasswordToModify    = false;

    bool bDoHandleRequest = false;

    uno::Any aAnyRequest(rRequest->getRequest());

    task::DocumentPasswordRequest2 aDocumentPasswordRequest2;
    if (!bDoHandleRequest && (aAnyRequest >>= aDocumentPasswordRequest2))
    {
        nMode               = aDocumentPasswordRequest2.Mode;
        aDocumentName       = aDocumentPasswordRequest2.Name;
        OSL_ENSURE( bMSCryptoMode == false, "bMSCryptoMode should be false" );
        bIsPasswordToModify = aDocumentPasswordRequest2.IsRequestPasswordToModify;

        bDoHandleRequest = true;
    }

    task::DocumentPasswordRequest aDocumentPasswordRequest;
    if (!bDoHandleRequest && (aAnyRequest >>= aDocumentPasswordRequest))
    {
        nMode               = aDocumentPasswordRequest.Mode;
        aDocumentName       = aDocumentPasswordRequest.Name;
        OSL_ENSURE( bMSCryptoMode == false, "bMSCryptoMode should be false" );
        OSL_ENSURE( bIsPasswordToModify == false, "bIsPasswordToModify should be false" );

        bDoHandleRequest = true;
    }

    task::DocumentMSPasswordRequest2 aDocumentMSPasswordRequest2;
    if (!bDoHandleRequest && (aAnyRequest >>= aDocumentMSPasswordRequest2))
    {
        nMode               = aDocumentMSPasswordRequest2.Mode;
        aDocumentName       = aDocumentMSPasswordRequest2.Name;
        bMSCryptoMode       = true;
        bIsPasswordToModify = aDocumentMSPasswordRequest2.IsRequestPasswordToModify;

        bDoHandleRequest = true;
    }

    task::DocumentMSPasswordRequest aDocumentMSPasswordRequest;
    if (!bDoHandleRequest && (aAnyRequest >>= aDocumentMSPasswordRequest))
    {
        nMode               = aDocumentMSPasswordRequest.Mode;
        aDocumentName       = aDocumentMSPasswordRequest.Name;
        bMSCryptoMode       = true;
        OSL_ENSURE( bIsPasswordToModify == false, "bIsPasswordToModify should be false" );

        bDoHandleRequest = true;
    }

    if (bDoHandleRequest)
    {
        handlePasswordRequest_( pParent, nMode, rContinuations,
                aDocumentName, bMSCryptoMode, bIsPasswordToModify );
        return true;
    }

    task::PasswordRequest aPasswordRequest;
    if( aAnyRequest >>= aPasswordRequest )
    {
        handlePasswordRequest_(getParentProperty(),
                               aPasswordRequest.Mode,
                               rRequest->getContinuations(),
                               OUString(),
                               false /* bool bMSCryptoMode */,
                               false /* bool bIsPasswordToModify */,
                               true  /* bool bIsSimplePasswordRequest */ );
        return true;
    }

    return false;
}

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