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Diffstat (limited to 'package/inc/ZipFile.hxx')
| -rw-r--r-- | package/inc/ZipFile.hxx | 167 |
1 files changed, 167 insertions, 0 deletions
diff --git a/package/inc/ZipFile.hxx b/package/inc/ZipFile.hxx new file mode 100644 index 000000000..15b800430 --- /dev/null +++ b/package/inc/ZipFile.hxx @@ -0,0 +1,167 @@ +/* -*- 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 . + */ +#ifndef INCLUDED_PACKAGE_INC_ZIPFILE_HXX +#define INCLUDED_PACKAGE_INC_ZIPFILE_HXX + +#include <com/sun/star/xml/crypto/XCipherContext.hpp> +#include <com/sun/star/xml/crypto/XDigestContext.hpp> + +#include <comphelper/refcountedmutex.hxx> +#include <package/Inflater.hxx> +#include <rtl/ref.hxx> +#include "ByteGrabber.hxx" +#include "HashMaps.hxx" +#include "EncryptionData.hxx" + +namespace com::sun::star { + namespace uno { class XComponentContext; } + namespace ucb { class XProgressHandler; } +} +namespace rtl +{ + template < class T > class Reference; +} + +/* + * We impose arbitrary but reasonable limit on ZIP files. + */ + +#define ZIP_MAXNAMELEN 512 +#define ZIP_MAXENTRIES (0x10000 - 2) + +class ZipEnumeration; + +class ZipFile +{ + rtl::Reference<comphelper::RefCountedMutex> m_aMutexHolder; + + EntryHash aEntries; + ByteGrabber aGrabber; + ZipUtils::Inflater aInflater; + css::uno::Reference < css::io::XInputStream > xStream; + const css::uno::Reference < css::uno::XComponentContext > m_xContext; + + bool bRecoveryMode; + + // aMediaType parameter is used only for raw stream header creation + css::uno::Reference < css::io::XInputStream > createStreamForZipEntry( + const rtl::Reference<comphelper::RefCountedMutex>& aMutexHolder, + ZipEntry const & rEntry, + const ::rtl::Reference < EncryptionData > &rData, + sal_Int8 nStreamMode, + bool bDecrypt, + const bool bUseBufferedStream = true, + const OUString& aMediaType = OUString() ); + + bool hasValidPassword ( ZipEntry const & rEntry, const rtl::Reference < EncryptionData > &rData ); + + bool checkSizeAndCRC( const ZipEntry& aEntry ); + + sal_Int32 getCRC( sal_Int64 nOffset, sal_Int64 nSize ); + + void getSizeAndCRC( sal_Int64 nOffset, sal_Int64 nCompressedSize, sal_Int64 *nSize, sal_Int32 *nCRC ); + + void readLOC( ZipEntry &rEntry ); + sal_Int32 readCEN(); + sal_Int32 findEND(); + void recover(); + +public: + + ZipFile( const rtl::Reference<comphelper::RefCountedMutex>& aMutexHolder, + css::uno::Reference < css::io::XInputStream > const &xInput, + const css::uno::Reference < css::uno::XComponentContext > &rxContext, + bool bInitialise ); + + ZipFile( const rtl::Reference<comphelper::RefCountedMutex>& aMutexHolder, + css::uno::Reference < css::io::XInputStream > const &xInput, + const css::uno::Reference < css::uno::XComponentContext > &rxContext, + bool bInitialise, + bool bForceRecover ); + + ~ZipFile(); + + EntryHash& GetEntryHash() { return aEntries; } + + void setInputStream ( const css::uno::Reference < css::io::XInputStream >& xNewStream ); + css::uno::Reference< css::io::XInputStream > getRawData( + ZipEntry& rEntry, + const ::rtl::Reference < EncryptionData > &rData, + bool bDecrypt, + const rtl::Reference<comphelper::RefCountedMutex>& aMutexHolder, + const bool bUseBufferedStream = true ); + + static css::uno::Reference< css::xml::crypto::XDigestContext > StaticGetDigestContextForChecksum( + const css::uno::Reference< css::uno::XComponentContext >& xArgContext, + const ::rtl::Reference< EncryptionData >& xEncryptionData ); + + static css::uno::Reference< css::xml::crypto::XCipherContext > StaticGetCipher( + const css::uno::Reference< css::uno::XComponentContext >& xArgContext, + const ::rtl::Reference< EncryptionData >& xEncryptionData, + bool bEncrypt ); + + static void StaticFillHeader ( const ::rtl::Reference < EncryptionData > & rData, + sal_Int64 nSize, + const OUString& aMediaType, + sal_Int8 * & pHeader ); + + static bool StaticFillData ( ::rtl::Reference < BaseEncryptionData > const & rData, + sal_Int32 &rEncAlgorithm, + sal_Int32 &rChecksumAlgorithm, + sal_Int32 &rDerivedKeySize, + sal_Int32 &rStartKeyGenID, + sal_Int32 &rSize, + OUString& aMediaType, + const css::uno::Reference < css::io::XInputStream >& rStream ); + + static css::uno::Reference< css::io::XInputStream > StaticGetDataFromRawStream( + const rtl::Reference<comphelper::RefCountedMutex>& aMutexHolder, + const css::uno::Reference< css::uno::XComponentContext >& rxContext, + const css::uno::Reference< css::io::XInputStream >& xStream, + const ::rtl::Reference < EncryptionData > &rData ); + + static bool StaticHasValidPassword ( + const css::uno::Reference< css::uno::XComponentContext >& rxContext, + const css::uno::Sequence< sal_Int8 > &aReadBuffer, + const ::rtl::Reference < EncryptionData > &rData ); + + css::uno::Reference< css::io::XInputStream > getInputStream( + ZipEntry& rEntry, + const ::rtl::Reference < EncryptionData > &rData, + bool bDecrypt, + const rtl::Reference<comphelper::RefCountedMutex>& aMutexHolder ); + + css::uno::Reference< css::io::XInputStream > getDataStream( + ZipEntry& rEntry, + const ::rtl::Reference < EncryptionData > &rData, + bool bDecrypt, + const rtl::Reference<comphelper::RefCountedMutex>& aMutexHolder ); + + css::uno::Reference< css::io::XInputStream > getWrappedRawStream( + ZipEntry& rEntry, + const ::rtl::Reference < EncryptionData > &rData, + const OUString& aMediaType, + const rtl::Reference<comphelper::RefCountedMutex>& aMutexHolder ); + + ZipEnumeration entries(); +}; + +#endif + +/* vim:set shiftwidth=4 softtabstop=4 expandtab: */ |