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| -rw-r--r-- | package/source/xstor/xfactory.cxx | 293 |
1 files changed, 293 insertions, 0 deletions
diff --git a/package/source/xstor/xfactory.cxx b/package/source/xstor/xfactory.cxx new file mode 100644 index 000000000..38c8d4df2 --- /dev/null +++ b/package/source/xstor/xfactory.cxx @@ -0,0 +1,293 @@ +/* -*- 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 <sal/config.h> +#include <sal/log.hxx> + +#include <com/sun/star/ucb/SimpleFileAccess.hpp> +#include <com/sun/star/embed/ElementModes.hpp> +#include <com/sun/star/embed/StorageFormats.hpp> +#include <com/sun/star/beans/PropertyValue.hpp> +#include <com/sun/star/io/IOException.hpp> +#include <com/sun/star/io/TempFile.hpp> +#include <com/sun/star/io/XSeekable.hpp> + +#include <comphelper/propertyvalue.hxx> +#include <comphelper/storagehelper.hxx> +#include <cppuhelper/supportsservice.hxx> +#include <cppuhelper/weak.hxx> +#include <osl/diagnose.h> + +#include "xfactory.hxx" +#include "xstorage.hxx" + +using namespace ::com::sun::star; + +#if OSL_DEBUG_LEVEL > 0 +#define THROW_WHERE SAL_WHERE +#else +#define THROW_WHERE "" +#endif + +static bool CheckPackageSignature_Impl( const uno::Reference< io::XInputStream >& xInputStream, + const uno::Reference< io::XSeekable >& xSeekable ) +{ + if ( !xInputStream.is() || !xSeekable.is() ) + throw uno::RuntimeException(); + + if ( xSeekable->getLength() ) + { + uno::Sequence< sal_Int8 > aData( 4 ); + xSeekable->seek( 0 ); + sal_Int32 nRead = xInputStream->readBytes( aData, 4 ); + xSeekable->seek( 0 ); + + // TODO/LATER: should the disk spanned files be supported? + // 0x50, 0x4b, 0x07, 0x08 + return ( nRead == 4 && aData[0] == 0x50 && aData[1] == 0x4b && aData[2] == 0x03 && aData[3] == 0x04 ); + } + else + return true; // allow to create a storage based on empty stream +} + + + +uno::Reference< uno::XInterface > SAL_CALL OStorageFactory::createInstance() +{ + // TODO: reimplement TempStream service to support XStream interface + uno::Reference < io::XStream > xTempStream( + io::TempFile::create(m_xContext), + uno::UNO_QUERY_THROW ); + + return static_cast<OWeakObject*>(new OStorage(xTempStream, embed::ElementModes::READWRITE, + uno::Sequence<beans::PropertyValue>(), m_xContext, + embed::StorageFormats::PACKAGE)); +} + +uno::Reference< uno::XInterface > SAL_CALL OStorageFactory::createInstanceWithArguments( + const uno::Sequence< uno::Any >& aArguments ) +{ + // The request for storage can be done with up to three arguments + + // The first argument specifies a source for the storage + // it can be URL, XStream, XInputStream. + // The second value is a mode the storage should be open in. + // And the third value is a media descriptor. + + sal_Int32 nArgNum = aArguments.getLength(); + OSL_ENSURE( nArgNum < 4, "Wrong parameter number" ); + + if ( !nArgNum ) + return createInstance(); + + // first try to retrieve storage open mode if any + // by default the storage will be open in readonly mode + sal_Int32 nStorageMode = embed::ElementModes::READ; + if ( nArgNum >= 2 ) + { + if( !( aArguments[1] >>= nStorageMode ) ) + { + OSL_FAIL( "Wrong second argument!" ); + throw lang::IllegalArgumentException(); // TODO: + } + // it's always possible to read written storage in this implementation + nStorageMode |= embed::ElementModes::READ; + } + + if ( ( nStorageMode & embed::ElementModes::TRUNCATE ) == embed::ElementModes::TRUNCATE + && ( nStorageMode & embed::ElementModes::WRITE ) != embed::ElementModes::WRITE ) + throw lang::IllegalArgumentException(); // TODO: + + // retrieve storage source stream + OUString aURL; + uno::Reference< io::XStream > xStream; + uno::Reference< io::XInputStream > xInputStream; + + if ( aArguments[0] >>= aURL ) + { + if ( aURL.isEmpty() ) + { + OSL_FAIL( "Empty URL is provided!" ); + throw lang::IllegalArgumentException(); // TODO: + } + + if ( aURL.startsWithIgnoreAsciiCase("vnd.sun.star.pkg:") ) + { + OSL_FAIL( "Packages URL's are not valid for storages!" ); // ??? + throw lang::IllegalArgumentException(); // TODO: + } + + uno::Reference < ucb::XSimpleFileAccess3 > xTempAccess( + ucb::SimpleFileAccess::create( + m_xContext ) ); + + if ( nStorageMode & embed::ElementModes::WRITE ) + xStream = xTempAccess->openFileReadWrite( aURL ); + else + xInputStream = xTempAccess->openFileRead( aURL ); + } + else if ( !( aArguments[0] >>= xStream ) && !( aArguments[0] >>= xInputStream ) ) + { + OSL_FAIL( "Wrong first argument!" ); + throw uno::Exception("wrong first arg", nullptr); // TODO: Illegal argument + } + + // retrieve mediadescriptor and set storage properties + uno::Sequence< beans::PropertyValue > aDescr; + uno::Sequence< beans::PropertyValue > aPropsToSet; + + sal_Int32 nStorageType = embed::StorageFormats::PACKAGE; + + if ( nArgNum >= 3 ) + { + if( aArguments[2] >>= aDescr ) + { + if ( !aURL.isEmpty() ) + { + aPropsToSet = { comphelper::makePropertyValue("URL", aURL) }; + } + + sal_Int32 nNumArgs = 1; + for ( const auto& rProp : std::as_const(aDescr) ) + { + if ( rProp.Name == "InteractionHandler" + || rProp.Name == "Password" + || rProp.Name == "RepairPackage" + || rProp.Name == "StatusIndicator" ) + { + aPropsToSet.realloc( ++nNumArgs ); + auto pPropsToSet = aPropsToSet.getArray(); + pPropsToSet[nNumArgs-1].Name = rProp.Name; + pPropsToSet[nNumArgs-1].Value = rProp.Value; + } + else if ( rProp.Name == "StorageFormat" ) + { + OUString aFormatName; + sal_Int32 nFormatID = 0; + if ( rProp.Value >>= aFormatName ) + { + if ( aFormatName == PACKAGE_STORAGE_FORMAT_STRING ) + nStorageType = embed::StorageFormats::PACKAGE; + else if ( aFormatName == ZIP_STORAGE_FORMAT_STRING ) + nStorageType = embed::StorageFormats::ZIP; + else if ( aFormatName == OFOPXML_STORAGE_FORMAT_STRING ) + nStorageType = embed::StorageFormats::OFOPXML; + else + throw lang::IllegalArgumentException( THROW_WHERE, uno::Reference< uno::XInterface >(), 1 ); + } + else if ( rProp.Value >>= nFormatID ) + { + if ( nFormatID != embed::StorageFormats::PACKAGE + && nFormatID != embed::StorageFormats::ZIP + && nFormatID != embed::StorageFormats::OFOPXML ) + throw lang::IllegalArgumentException( THROW_WHERE, uno::Reference< uno::XInterface >(), 1 ); + + nStorageType = nFormatID; + } + else + throw lang::IllegalArgumentException( THROW_WHERE, uno::Reference< uno::XInterface >(), 1 ); + } + else if (rProp.Name == "NoFileSync") + { + // Forward NoFileSync to the storage. + aPropsToSet.realloc(++nNumArgs); + auto pPropsToSet = aPropsToSet.getArray(); + pPropsToSet[nNumArgs - 1].Name = rProp.Name; + pPropsToSet[nNumArgs - 1].Value = rProp.Value; + } + else + OSL_FAIL( "Unacceptable property, will be ignored!" ); + } + } + else + { + OSL_FAIL( "Wrong third argument!" ); + throw uno::Exception("wrong 3rd arg", nullptr); // TODO: Illegal argument + } + + } + + // create storage based on source + if ( xInputStream.is() ) + { + // if xInputStream is set the storage should be open from it + if ( nStorageMode & embed::ElementModes::WRITE ) + throw uno::Exception("storagemode==write", nullptr); // TODO: access denied + + uno::Reference< io::XSeekable > xSeekable( xInputStream, uno::UNO_QUERY ); + if ( !xSeekable.is() ) + { + // TODO: wrap stream to let it be seekable + OSL_FAIL( "Nonseekable streams are not supported for now!" ); + } + + if ( !CheckPackageSignature_Impl( xInputStream, xSeekable ) ) + throw io::IOException("package signature check failed, probably not a package file", nullptr); // TODO: this is not a package file + + return static_cast<OWeakObject*>( + new OStorage(xInputStream, nStorageMode, aPropsToSet, m_xContext, nStorageType)); + } + else if ( xStream.is() ) + { + if ( ( ( nStorageMode & embed::ElementModes::WRITE ) && !xStream->getOutputStream().is() ) + || !xStream->getInputStream().is() ) + throw uno::Exception("access denied", nullptr); // TODO: access denied + + uno::Reference< io::XSeekable > xSeekable( xStream, uno::UNO_QUERY ); + if ( !xSeekable.is() ) + { + // TODO: wrap stream to let it be seekable + OSL_FAIL( "Nonseekable streams are not supported for now!" ); + } + + if ( !CheckPackageSignature_Impl( xStream->getInputStream(), xSeekable ) ) + throw io::IOException(); // TODO: this is not a package file + + return static_cast<OWeakObject*>( + new OStorage(xStream, nStorageMode, aPropsToSet, m_xContext, nStorageType)); + } + + throw uno::Exception("no input stream or regular stream", nullptr); // general error during creation +} + +OUString SAL_CALL OStorageFactory::getImplementationName() +{ + return "com.sun.star.comp.embed.StorageFactory"; +} + +sal_Bool SAL_CALL OStorageFactory::supportsService( const OUString& ServiceName ) +{ + return cppu::supportsService(this, ServiceName); +} + +uno::Sequence< OUString > SAL_CALL OStorageFactory::getSupportedServiceNames() +{ + return { "com.sun.star.embed.StorageFactory", + "com.sun.star.comp.embed.StorageFactory" }; +} + + +extern "C" SAL_DLLPUBLIC_EXPORT css::uno::XInterface* +package_OStorageFactory_get_implementation( + css::uno::XComponentContext* context, css::uno::Sequence<css::uno::Any> const&) +{ + return cppu::acquire(new OStorageFactory(context)); +} + +/* vim:set shiftwidth=4 softtabstop=4 expandtab: */ |