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Diffstat (limited to 'package/source/zippackage/zipfileaccess.cxx')
| -rw-r--r-- | package/source/zippackage/zipfileaccess.cxx | 479 |
1 files changed, 479 insertions, 0 deletions
diff --git a/package/source/zippackage/zipfileaccess.cxx b/package/source/zippackage/zipfileaccess.cxx new file mode 100644 index 0000000000..d693a51cec --- /dev/null +++ b/package/source/zippackage/zipfileaccess.cxx @@ -0,0 +1,479 @@ +/* -*- 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 <com/sun/star/lang/DisposedException.hpp> +#include <com/sun/star/lang/IllegalArgumentException.hpp> +#include <com/sun/star/ucb/XCommandEnvironment.hpp> +#include <com/sun/star/io/NotConnectedException.hpp> +#include <com/sun/star/io/XActiveDataSink.hpp> +#include <com/sun/star/io/XStream.hpp> +#include <com/sun/star/io/XSeekable.hpp> +#include <com/sun/star/beans/NamedValue.hpp> +#include <comphelper/processfactory.hxx> +#include <cppuhelper/exc_hlp.hxx> +#include <cppuhelper/supportsservice.hxx> +#include <zipfileaccess.hxx> +#include "ZipPackageSink.hxx" +#include <EncryptionData.hxx> + +#include <ucbhelper/content.hxx> +#include <rtl/ref.hxx> +#include <sal/log.hxx> +#include <osl/diagnose.h> + +using namespace ::com::sun::star; + +#if OSL_DEBUG_LEVEL > 0 +#define THROW_WHERE SAL_WHERE +#else +#define THROW_WHERE "" +#endif + +OZipFileAccess::OZipFileAccess( const uno::Reference< uno::XComponentContext >& rxContext ) +: m_aMutexHolder( new comphelper::RefCountedMutex ) +, m_xContext( rxContext ) +, m_bDisposed( false ) +, m_bOwnContent( false ) +{ + if ( !rxContext.is() ) + throw uno::RuntimeException(THROW_WHERE ); +} + +OZipFileAccess::~OZipFileAccess() +{ + ::osl::MutexGuard aGuard( m_aMutexHolder->GetMutex() ); + if ( !m_bDisposed ) + { + try { + // dispose will use refcounting so the further destruction must be avoided + osl_atomic_increment(&m_refCount); + dispose(); + } catch( uno::Exception& ) + {} + } +} + +uno::Sequence< OUString > OZipFileAccess::GetPatternsFromString_Impl( const OUString& aString ) +{ + if ( aString.isEmpty() ) + return uno::Sequence< OUString >(); + + uno::Sequence< OUString > aPattern( 1 ); + auto pPattern = aPattern.getArray(); + sal_Int32 nInd = 0; + + const sal_Unicode* pString = aString.getStr(); + while( *pString ) + { + if ( *pString == '\\' ) + { + pString++; + + if ( *pString == '\\' ) + { + pPattern[nInd] += "\\"; + pString++; + } + else if ( *pString == '*' ) + { + pPattern[nInd] += "*"; + pString++; + } + else + { + OSL_FAIL( "The backslash is not guarded!" ); + pPattern[nInd] += "\\"; + } + } + else if ( *pString == '*' ) + { + aPattern.realloc( ( ++nInd ) + 1 ); + pPattern = aPattern.getArray(); + pString++; + } + else + { + pPattern[nInd] += OUStringChar( *pString ); + pString++; + } + } + + return aPattern; +} + +bool OZipFileAccess::StringGoodForPattern_Impl( std::u16string_view aString, + const uno::Sequence< OUString >& aPattern ) +{ + sal_Int32 nInd = aPattern.getLength() - 1; + if ( nInd < 0 ) + return false; + + if ( nInd == 0 ) + { + if ( aPattern[0].isEmpty() ) + return true; + + return aString == aPattern[0]; + } + + sal_Int32 nBeginInd = aPattern[0].getLength(); + sal_Int32 nEndInd = aString.size() - aPattern[nInd].getLength(); + if ( nEndInd < nBeginInd + || ( nEndInd != sal_Int32(aString.size()) && aString.substr( nEndInd ) != aPattern[nInd] ) + || ( nBeginInd != 0 && aString.substr( 0, nBeginInd ) != aPattern[0] ) ) + return false; + + for ( sal_Int32 nCurInd = aPattern.getLength() - 2; nCurInd > 0; nCurInd-- ) + { + if ( aPattern[nCurInd].isEmpty() ) + continue; + + if ( nEndInd == nBeginInd ) + return false; + + // check that search does not use nEndInd position + size_t nLastInd = aString.substr(0, nEndInd - 1).rfind( aPattern[nCurInd] ); + + if ( nLastInd == std::u16string_view::npos ) + return false; + + if ( sal_Int32(nLastInd) < nBeginInd ) + return false; + + nEndInd = nLastInd; + } + + return true; +} + +// XInitialization +void SAL_CALL OZipFileAccess::initialize( const uno::Sequence< uno::Any >& aArguments ) +{ + ::osl::MutexGuard aGuard( m_aMutexHolder->GetMutex() ); + + if ( m_bDisposed ) + throw lang::DisposedException(THROW_WHERE ); + + if ( m_pZipFile ) + throw uno::RuntimeException(THROW_WHERE ); // initialization is allowed only one time + + if ( !aArguments.hasElements() ) + throw lang::IllegalArgumentException(THROW_WHERE, uno::Reference< uno::XInterface >(), 1 ); + + OSL_ENSURE( aArguments.getLength() == 1, "Too many arguments are provided, only the first one will be used!" ); + + OUString aParamURL; + uno::Reference< io::XStream > xStream; + uno::Reference< io::XSeekable > xSeekable; + uno::Sequence<beans::NamedValue> aArgs; + + auto openInputStream = [&]() + { + ::ucbhelper::Content aContent( + aParamURL, + uno::Reference< css::ucb::XCommandEnvironment >(), + m_xContext ); + uno::Reference < io::XActiveDataSink > xSink = new ZipPackageSink; + if ( aContent.openStream ( xSink ) ) + { + m_xContentStream = xSink->getInputStream(); + m_bOwnContent = true; + xSeekable.set( m_xContentStream, uno::UNO_QUERY ); + } + }; + + if ( aArguments[0] >>= aParamURL ) + { + openInputStream(); + } + else if ( aArguments[0] >>= xStream ) + { + // a writable stream can implement both XStream & XInputStream + m_xContentStream = xStream->getInputStream(); + xSeekable.set( xStream, uno::UNO_QUERY ); + } + else if ( aArguments[0] >>= m_xContentStream ) + { + xSeekable.set( m_xContentStream, uno::UNO_QUERY ); + } + else if (aArguments[0] >>= aArgs) + { + for (const beans::NamedValue& rArg : std::as_const(aArgs)) + { + if (rArg.Name == "URL") + rArg.Value >>= aParamURL; + } + + if (aParamURL.isEmpty()) + throw lang::IllegalArgumentException( + THROW_WHERE"required argument 'URL' is not given or invalid.", + uno::Reference<uno::XInterface>(), 1); + + openInputStream(); + } + else + throw lang::IllegalArgumentException(THROW_WHERE, uno::Reference< uno::XInterface >(), 1 ); + + if ( !m_xContentStream.is() ) + throw io::IOException(THROW_WHERE ); + + if ( !xSeekable.is() ) + { + // TODO: after fwkbugfix02 is integrated a helper class can be used to make the stream seekable + throw io::IOException(THROW_WHERE ); + } + + // TODO: in case xSeekable is implemented on separated XStream implementation a wrapper is required + m_pZipFile.emplace( + m_aMutexHolder, + m_xContentStream, + m_xContext, + true ); +} + +// XNameAccess +uno::Any SAL_CALL OZipFileAccess::getByName( const OUString& aName ) +{ + ::osl::MutexGuard aGuard( m_aMutexHolder->GetMutex() ); + + if ( m_bDisposed ) + throw lang::DisposedException(THROW_WHERE ); + + if ( !m_pZipFile ) + throw uno::RuntimeException(THROW_WHERE); + + EntryHash::iterator aIter = m_pZipFile->GetEntryHash().find( aName ); + if ( aIter == m_pZipFile->GetEntryHash().end() ) + throw container::NoSuchElementException(THROW_WHERE ); + + uno::Reference< io::XInputStream > xEntryStream; + try + { + xEntryStream = m_pZipFile->getDataStream((*aIter).second, + ::rtl::Reference< EncryptionData >(), + false, + m_aMutexHolder); + } + catch (const container::NoSuchElementException&) + { + throw; + } + catch (const lang::WrappedTargetException&) + { + throw; + } + catch (const uno::RuntimeException&) + { + throw; + } + catch (const uno::Exception&) + { + css::uno::Any anyEx = cppu::getCaughtException(); + throw lang::WrappedTargetException( "This package is unusable!", + getXWeak(), anyEx); + } + + if ( !xEntryStream.is() ) + throw uno::RuntimeException(THROW_WHERE ); + + return uno::Any ( xEntryStream ); +} + +uno::Sequence< OUString > SAL_CALL OZipFileAccess::getElementNames() +{ + ::osl::MutexGuard aGuard( m_aMutexHolder->GetMutex() ); + + if ( m_bDisposed ) + throw lang::DisposedException(THROW_WHERE ); + + if ( !m_pZipFile ) + throw uno::RuntimeException(THROW_WHERE); + + uno::Sequence< OUString > aNames( m_pZipFile->GetEntryHash().size() ); + auto pNames = aNames.getArray(); + sal_Int32 nLen = 0; + + for ( const auto& rEntry : m_pZipFile->GetEntryHash() ) + { + if ( aNames.getLength() < ++nLen ) + { + OSL_FAIL( "The size must be the same!" ); + aNames.realloc( nLen ); + pNames = aNames.getArray(); + } + + pNames[nLen-1] = rEntry.second.sPath; + } + + if ( aNames.getLength() != nLen ) + { + OSL_FAIL( "The size must be the same!" ); + aNames.realloc( nLen ); + } + + return aNames; +} + +sal_Bool SAL_CALL OZipFileAccess::hasByName( const OUString& aName ) +{ + ::osl::MutexGuard aGuard( m_aMutexHolder->GetMutex() ); + + if ( m_bDisposed ) + throw lang::DisposedException(THROW_WHERE ); + + if ( !m_pZipFile ) + throw uno::RuntimeException(THROW_WHERE); + + EntryHash::iterator aIter = m_pZipFile->GetEntryHash().find( aName ); + + return ( aIter != m_pZipFile->GetEntryHash().end() ); +} + +uno::Type SAL_CALL OZipFileAccess::getElementType() +{ + ::osl::MutexGuard aGuard( m_aMutexHolder->GetMutex() ); + + if ( m_bDisposed ) + throw lang::DisposedException(THROW_WHERE ); + + if ( !m_pZipFile ) + throw uno::RuntimeException(THROW_WHERE); + + return cppu::UnoType<io::XInputStream>::get(); +} + +sal_Bool SAL_CALL OZipFileAccess::hasElements() +{ + ::osl::MutexGuard aGuard( m_aMutexHolder->GetMutex() ); + + if ( m_bDisposed ) + throw lang::DisposedException(THROW_WHERE ); + + if ( !m_pZipFile ) + throw uno::RuntimeException(THROW_WHERE); + + return ( !m_pZipFile->GetEntryHash().empty() ); +} + +// XZipFileAccess +uno::Reference< io::XInputStream > SAL_CALL OZipFileAccess::getStreamByPattern( const OUString& aPatternString ) +{ + ::osl::MutexGuard aGuard( m_aMutexHolder->GetMutex() ); + + if ( m_bDisposed ) + throw lang::DisposedException(THROW_WHERE ); + + if ( !m_pZipFile ) + throw io::NotConnectedException(THROW_WHERE ); + + // Code to compare strings by patterns + uno::Sequence< OUString > aPattern = GetPatternsFromString_Impl( aPatternString ); + + auto aIter = std::find_if(m_pZipFile->GetEntryHash().begin(), m_pZipFile->GetEntryHash().end(), + [&aPattern](const EntryHash::value_type& rEntry) { return StringGoodForPattern_Impl(rEntry.second.sPath, aPattern); }); + if (aIter != m_pZipFile->GetEntryHash().end()) + { + uno::Reference< io::XInputStream > xEntryStream( m_pZipFile->getDataStream( (*aIter).second, + ::rtl::Reference< EncryptionData >(), + false, + m_aMutexHolder ) ); + + if ( !xEntryStream.is() ) + throw uno::RuntimeException(THROW_WHERE ); + return xEntryStream; + } + + throw container::NoSuchElementException(THROW_WHERE ); +} + +// XComponent +void SAL_CALL OZipFileAccess::dispose() +{ + ::osl::MutexGuard aGuard( m_aMutexHolder->GetMutex() ); + + if ( m_bDisposed ) + throw lang::DisposedException(THROW_WHERE ); + + if ( m_pListenersContainer ) + { + lang::EventObject aSource( getXWeak() ); + m_pListenersContainer->disposeAndClear( aSource ); + m_pListenersContainer.reset(); + } + + m_pZipFile.reset(); + + if ( m_xContentStream.is() && m_bOwnContent ) + try { + m_xContentStream->closeInput(); + } catch( uno::Exception& ) + {} + + m_bDisposed = true; +} + +void SAL_CALL OZipFileAccess::addEventListener( const uno::Reference< lang::XEventListener >& xListener ) +{ + ::osl::MutexGuard aGuard( m_aMutexHolder->GetMutex() ); + + if ( m_bDisposed ) + throw lang::DisposedException(THROW_WHERE ); + + if ( !m_pListenersContainer ) + m_pListenersContainer.reset( new ::comphelper::OInterfaceContainerHelper3<css::lang::XEventListener>( m_aMutexHolder->GetMutex() ) ); + m_pListenersContainer->addInterface( xListener ); +} + +void SAL_CALL OZipFileAccess::removeEventListener( const uno::Reference< lang::XEventListener >& xListener ) +{ + ::osl::MutexGuard aGuard( m_aMutexHolder->GetMutex() ); + + if ( m_bDisposed ) + throw lang::DisposedException(THROW_WHERE ); + + if ( m_pListenersContainer ) + m_pListenersContainer->removeInterface( xListener ); +} + +OUString SAL_CALL OZipFileAccess::getImplementationName() +{ + return "com.sun.star.comp.package.zip.ZipFileAccess"; +} + +sal_Bool SAL_CALL OZipFileAccess::supportsService( const OUString& ServiceName ) +{ + return cppu::supportsService(this, ServiceName); +} + +uno::Sequence< OUString > SAL_CALL OZipFileAccess::getSupportedServiceNames() +{ + return { "com.sun.star.packages.zip.ZipFileAccess", + "com.sun.star.comp.packages.zip.ZipFileAccess" }; +} + + +extern "C" SAL_DLLPUBLIC_EXPORT css::uno::XInterface* +package_OZipFileAccess_get_implementation( + css::uno::XComponentContext* context , css::uno::Sequence<css::uno::Any> const&) +{ + return cppu::acquire(new OZipFileAccess(context)); +} + + +/* vim:set shiftwidth=4 softtabstop=4 expandtab: */ |