2011-02-14 16:09:09 +03:00
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/*
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2013-05-23 23:29:18 +04:00
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* Copyright 2009-2013, Ingo Weinhold, ingo_weinhold@gmx.de.
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2011-02-14 16:09:09 +03:00
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* Copyright 2011, Oliver Tappe <zooey@hirschkaefer.de>
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* Distributed under the terms of the MIT License.
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*/
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#ifndef _PACKAGE__HPKG__PRIVATE__READER_IMPL_BASE_H_
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#define _PACKAGE__HPKG__PRIVATE__READER_IMPL_BASE_H_
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2013-05-18 06:11:01 +04:00
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#include <errno.h>
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#include <sys/stat.h>
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#include <ByteOrder.h>
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2011-02-14 16:09:09 +03:00
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#include <SupportDefs.h>
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2013-05-24 05:11:18 +04:00
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#include <Array.h>
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2011-02-14 16:09:09 +03:00
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#include <util/SinglyLinkedList.h>
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2013-05-19 12:44:11 +04:00
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#include <package/hpkg/ErrorOutput.h>
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2011-02-14 16:09:09 +03:00
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#include <package/hpkg/PackageAttributeValue.h>
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#include <package/hpkg/PackageContentHandler.h>
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#include <package/hpkg/PackageInfoAttributeValue.h>
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namespace BPackageKit {
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namespace BHPKG {
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2013-05-21 21:42:57 +04:00
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class BAbstractBufferedDataReader;
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2011-02-14 16:09:09 +03:00
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class BErrorOutput;
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namespace BPrivate {
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2013-05-18 06:11:01 +04:00
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class PackageFileHeapReader;
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struct PackageFileSection {
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uint32 uncompressedLength;
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uint8* data;
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uint64 offset;
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uint64 currentOffset;
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uint64 stringsLength;
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uint64 stringsCount;
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char** strings;
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const char* name;
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PackageFileSection(const char* _name)
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:
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data(NULL),
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strings(NULL),
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name(_name)
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{
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}
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~PackageFileSection()
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{
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delete[] strings;
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delete[] data;
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}
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};
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2011-02-14 16:09:09 +03:00
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class ReaderImplBase {
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2013-10-26 00:39:23 +04:00
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public:
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inline const PackageFileSection& PackageAttributesSection() const
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{ return fPackageAttributesSection; }
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2011-02-14 16:09:09 +03:00
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protected:
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ReaderImplBase(const char* fileType,
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BErrorOutput* errorOutput);
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virtual ~ReaderImplBase();
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int FD() const;
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BErrorOutput* ErrorOutput() const;
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2013-05-22 02:20:13 +04:00
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uint16 MinorFormatVersion() const
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{ return fMinorFormatVersion; }
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2013-05-21 21:42:57 +04:00
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uint64 UncompressedHeapSize() const;
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PackageFileHeapReader* RawHeapReader() const
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{ return fRawHeapReader; }
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BAbstractBufferedDataReader* HeapReader() const
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{ return fHeapReader; }
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// equals RawHeapReader(), if uncached
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BAbstractBufferedDataReader* DetachHeapReader(
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PackageFileHeapReader** _rawHeapReader
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= NULL);
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// Detaches both raw and (if applicable)
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// cached heap reader. The called gains
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// ownership. The FD may need to be set on
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// the raw heap reader, if it shall be used
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// after destroying this object and Init()
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// has been called with keepFD == true.
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2011-02-14 16:09:09 +03:00
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protected:
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class AttributeHandlerContext;
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class AttributeHandler;
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class IgnoreAttributeHandler;
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class PackageInfoAttributeHandlerBase;
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class PackageVersionAttributeHandler;
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class PackageResolvableAttributeHandler;
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class PackageResolvableExpressionAttributeHandler;
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2013-06-06 02:16:28 +04:00
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class GlobalWritableFileInfoAttributeHandler;
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2013-05-23 23:29:18 +04:00
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class UserSettingsFileInfoAttributeHandler;
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class UserAttributeHandler;
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class PackageAttributeHandler;
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class LowLevelAttributeHandler;
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2011-02-14 16:09:09 +03:00
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typedef BPackageAttributeValue AttributeValue;
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typedef SinglyLinkedList<AttributeHandler> AttributeHandlerList;
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protected:
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2013-05-24 00:59:40 +04:00
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template<typename Header, uint32 kMagic, uint16 kVersion,
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uint16 kMinorVersion>
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status_t Init(int fd, bool keepFD, Header& header,
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uint32 flags);
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status_t InitHeapReader(uint32 compression,
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uint32 chunkSize, off_t offset,
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uint64 compressedSize,
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uint64 uncompressedSize);
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2013-05-21 21:42:57 +04:00
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virtual status_t CreateCachedHeapReader(
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PackageFileHeapReader* heapReader,
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BAbstractBufferedDataReader*&
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_cachedReader);
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2013-05-18 06:11:01 +04:00
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status_t InitSection(PackageFileSection& section,
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uint64 endOffset, uint64 length,
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uint64 maxSaneLength, uint64 stringsLength,
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uint64 stringsCount);
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status_t PrepareSection(PackageFileSection& section);
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2011-02-14 16:09:09 +03:00
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status_t ParseStrings();
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status_t ParsePackageAttributesSection(
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AttributeHandlerContext* context,
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AttributeHandler* rootAttributeHandler);
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status_t ParseAttributeTree(
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2011-07-03 06:07:47 +04:00
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AttributeHandlerContext* context,
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bool& _sectionHandled);
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2011-02-14 16:09:09 +03:00
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virtual status_t ReadAttributeValue(uint8 type, uint8 encoding,
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AttributeValue& _value);
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status_t ReadUnsignedLEB128(uint64& _value);
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status_t ReadBuffer(off_t offset, void* buffer,
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size_t size);
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status_t ReadSection(const PackageFileSection& section);
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2011-02-14 16:09:09 +03:00
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inline AttributeHandler* CurrentAttributeHandler() const;
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inline void PushAttributeHandler(
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AttributeHandler* handler);
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inline AttributeHandler* PopAttributeHandler();
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inline void ClearAttributeHandlerStack();
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inline PackageFileSection* CurrentSection();
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inline void SetCurrentSection(PackageFileSection* section);
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2011-02-14 16:09:09 +03:00
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protected:
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PackageFileSection fPackageAttributesSection;
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2011-02-14 16:09:09 +03:00
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private:
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2013-05-18 06:11:01 +04:00
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status_t _Init(int fd, bool keepFD);
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2011-07-03 06:07:47 +04:00
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status_t _ParseAttributeTree(
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AttributeHandlerContext* context);
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2011-02-14 16:09:09 +03:00
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template<typename Type>
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inline status_t _Read(Type& _value);
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status_t _ReadSectionBuffer(void* buffer, size_t size);
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status_t _ReadAttribute(uint8& _id,
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AttributeValue& _value,
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bool* _hasChildren = NULL,
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uint64* _tag = NULL);
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status_t _ReadString(const char*& _string,
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size_t* _stringLength = NULL);
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private:
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const char* fFileType;
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2011-02-14 16:09:09 +03:00
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BErrorOutput* fErrorOutput;
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int fFD;
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bool fOwnsFD;
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uint16 fMinorFormatVersion;
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2013-05-24 00:59:40 +04:00
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uint16 fCurrentMinorFormatVersion;
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2011-02-14 16:09:09 +03:00
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2013-05-21 21:42:57 +04:00
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PackageFileHeapReader* fRawHeapReader;
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BAbstractBufferedDataReader* fHeapReader;
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2013-05-18 06:11:01 +04:00
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PackageFileSection* fCurrentSection;
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2011-02-14 16:09:09 +03:00
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AttributeHandlerList fAttributeHandlerStack;
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uint8* fScratchBuffer;
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size_t fScratchBufferSize;
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};
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2013-05-18 06:11:01 +04:00
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// #pragma mark - attribute handlers
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class ReaderImplBase::AttributeHandlerContext {
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public:
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BErrorOutput* errorOutput;
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union {
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BPackageContentHandler* packageContentHandler;
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BLowLevelPackageContentHandler* lowLevelHandler;
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};
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bool hasLowLevelHandler;
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2013-05-22 02:20:13 +04:00
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bool ignoreUnknownAttributes;
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2013-05-18 06:11:01 +04:00
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BHPKGPackageSectionID section;
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public:
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AttributeHandlerContext(
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BErrorOutput* errorOutput,
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BPackageContentHandler*
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packageContentHandler,
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BHPKGPackageSectionID section,
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bool ignoreUnknownAttributes);
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2013-05-18 06:11:01 +04:00
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AttributeHandlerContext(
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BErrorOutput* errorOutput,
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BLowLevelPackageContentHandler*
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lowLevelHandler,
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2013-05-22 02:20:13 +04:00
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BHPKGPackageSectionID section,
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bool ignoreUnknownAttributes);
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2013-05-18 06:11:01 +04:00
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void ErrorOccurred();
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};
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class ReaderImplBase::AttributeHandler
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: public SinglyLinkedListLinkImpl<AttributeHandler> {
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public:
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virtual ~AttributeHandler();
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void SetLevel(int level);
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virtual status_t HandleAttribute(
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AttributeHandlerContext* context, uint8 id,
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const AttributeValue& value,
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AttributeHandler** _handler);
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2013-09-18 22:20:43 +04:00
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virtual status_t NotifyDone(AttributeHandlerContext* context);
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2013-05-18 06:11:01 +04:00
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virtual status_t Delete(AttributeHandlerContext* context);
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protected:
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int fLevel;
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};
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class ReaderImplBase::IgnoreAttributeHandler : public AttributeHandler {
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};
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2013-05-23 23:29:18 +04:00
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class ReaderImplBase::PackageInfoAttributeHandlerBase
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: public AttributeHandler {
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private:
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typedef AttributeHandler super;
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public:
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PackageInfoAttributeHandlerBase(
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BPackageInfoAttributeValue&
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packageInfoValue);
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2013-09-18 22:20:43 +04:00
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virtual status_t NotifyDone(AttributeHandlerContext* context);
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2013-05-23 23:29:18 +04:00
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protected:
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BPackageInfoAttributeValue& fPackageInfoValue;
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};
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class ReaderImplBase::PackageVersionAttributeHandler
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: public PackageInfoAttributeHandlerBase {
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private:
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typedef PackageInfoAttributeHandlerBase super;
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public:
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PackageVersionAttributeHandler(
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BPackageInfoAttributeValue&
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packageInfoValue,
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BPackageVersionData& versionData,
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bool notify);
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virtual status_t HandleAttribute(
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AttributeHandlerContext* context, uint8 id,
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const AttributeValue& value,
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AttributeHandler** _handler);
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2013-09-18 22:20:43 +04:00
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virtual status_t NotifyDone(AttributeHandlerContext* context);
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2013-05-18 06:11:01 +04:00
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private:
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BPackageVersionData& fPackageVersionData;
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bool fNotify;
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};
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class ReaderImplBase::PackageResolvableAttributeHandler
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: public PackageInfoAttributeHandlerBase {
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2013-09-18 22:20:43 +04:00
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private:
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typedef PackageInfoAttributeHandlerBase super;
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public:
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PackageResolvableAttributeHandler(
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BPackageInfoAttributeValue&
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packageInfoValue);
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virtual status_t HandleAttribute(
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AttributeHandlerContext* context, uint8 id,
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const AttributeValue& value,
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AttributeHandler** _handler);
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};
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class ReaderImplBase::PackageResolvableExpressionAttributeHandler
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: public PackageInfoAttributeHandlerBase {
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2013-09-18 22:20:43 +04:00
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private:
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typedef PackageInfoAttributeHandlerBase super;
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2013-05-18 06:11:01 +04:00
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public:
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PackageResolvableExpressionAttributeHandler(
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BPackageInfoAttributeValue&
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packageInfoValue);
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virtual status_t HandleAttribute(
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AttributeHandlerContext* context, uint8 id,
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const AttributeValue& value,
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AttributeHandler** _handler);
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};
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2013-05-18 06:11:01 +04:00
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2013-06-06 02:16:28 +04:00
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class ReaderImplBase::GlobalWritableFileInfoAttributeHandler
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2013-05-23 23:29:18 +04:00
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: public PackageInfoAttributeHandlerBase {
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2013-09-18 22:20:43 +04:00
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private:
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typedef PackageInfoAttributeHandlerBase super;
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2013-05-23 23:29:18 +04:00
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public:
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2013-06-06 02:16:28 +04:00
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GlobalWritableFileInfoAttributeHandler(
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BPackageInfoAttributeValue&
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packageInfoValue);
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virtual status_t HandleAttribute(
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AttributeHandlerContext* context, uint8 id,
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const AttributeValue& value,
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AttributeHandler** _handler);
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};
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class ReaderImplBase::UserSettingsFileInfoAttributeHandler
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: public PackageInfoAttributeHandlerBase {
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2013-09-18 22:20:43 +04:00
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private:
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typedef PackageInfoAttributeHandlerBase super;
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2013-05-23 23:29:18 +04:00
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public:
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UserSettingsFileInfoAttributeHandler(
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BPackageInfoAttributeValue&
|
|
|
|
packageInfoValue);
|
|
|
|
|
|
|
|
virtual status_t HandleAttribute(
|
|
|
|
AttributeHandlerContext* context, uint8 id,
|
|
|
|
const AttributeValue& value,
|
|
|
|
AttributeHandler** _handler);
|
2013-05-18 06:11:01 +04:00
|
|
|
};
|
|
|
|
|
|
|
|
|
2013-05-24 05:11:18 +04:00
|
|
|
class ReaderImplBase::UserAttributeHandler
|
|
|
|
: public PackageInfoAttributeHandlerBase {
|
2013-09-18 22:20:43 +04:00
|
|
|
private:
|
|
|
|
typedef PackageInfoAttributeHandlerBase super;
|
2013-05-24 05:11:18 +04:00
|
|
|
public:
|
|
|
|
UserAttributeHandler(
|
|
|
|
BPackageInfoAttributeValue&
|
|
|
|
packageInfoValue);
|
|
|
|
|
|
|
|
virtual status_t HandleAttribute(
|
|
|
|
AttributeHandlerContext* context, uint8 id,
|
|
|
|
const AttributeValue& value,
|
|
|
|
AttributeHandler** _handler);
|
|
|
|
|
2013-09-18 22:20:43 +04:00
|
|
|
virtual status_t NotifyDone(AttributeHandlerContext* context);
|
2013-05-24 05:11:18 +04:00
|
|
|
|
|
|
|
private:
|
|
|
|
Array<const char*> fGroups;
|
|
|
|
};
|
|
|
|
|
|
|
|
|
2013-05-18 06:11:01 +04:00
|
|
|
class ReaderImplBase::PackageAttributeHandler : public AttributeHandler {
|
2013-09-18 22:20:43 +04:00
|
|
|
private:
|
|
|
|
typedef AttributeHandler super;
|
2013-05-18 06:11:01 +04:00
|
|
|
public:
|
|
|
|
virtual status_t HandleAttribute(
|
|
|
|
AttributeHandlerContext* context, uint8 id,
|
|
|
|
const AttributeValue& value,
|
|
|
|
AttributeHandler** _handler);
|
|
|
|
|
|
|
|
private:
|
|
|
|
BPackageInfoAttributeValue fPackageInfoValue;
|
|
|
|
};
|
|
|
|
|
|
|
|
|
|
|
|
class ReaderImplBase::LowLevelAttributeHandler : public AttributeHandler {
|
2013-09-18 22:20:43 +04:00
|
|
|
private:
|
|
|
|
typedef AttributeHandler super;
|
2013-05-18 06:11:01 +04:00
|
|
|
public:
|
|
|
|
LowLevelAttributeHandler();
|
|
|
|
LowLevelAttributeHandler(uint8 id,
|
|
|
|
const BPackageAttributeValue& value,
|
|
|
|
void* parentToken, void* token);
|
|
|
|
|
|
|
|
virtual status_t HandleAttribute(
|
|
|
|
AttributeHandlerContext* context, uint8 id,
|
|
|
|
const AttributeValue& value,
|
|
|
|
AttributeHandler** _handler);
|
2013-09-18 22:20:43 +04:00
|
|
|
|
|
|
|
virtual status_t NotifyDone(AttributeHandlerContext* context);
|
2013-05-18 06:11:01 +04:00
|
|
|
|
|
|
|
private:
|
|
|
|
void* fParentToken;
|
|
|
|
void* fToken;
|
|
|
|
uint8 fID;
|
|
|
|
AttributeValue fValue;
|
|
|
|
};
|
|
|
|
|
|
|
|
|
|
|
|
// #pragma mark - template and inline methods
|
|
|
|
|
|
|
|
|
2013-05-24 00:59:40 +04:00
|
|
|
template<typename Header, uint32 kMagic, uint16 kVersion, uint16 kMinorVersion>
|
2013-05-18 06:11:01 +04:00
|
|
|
status_t
|
2013-05-20 22:15:59 +04:00
|
|
|
ReaderImplBase::Init(int fd, bool keepFD, Header& header, uint32 flags)
|
2013-05-18 06:11:01 +04:00
|
|
|
{
|
|
|
|
status_t error = _Init(fd, keepFD);
|
|
|
|
if (error != B_OK)
|
|
|
|
return error;
|
|
|
|
|
|
|
|
// stat the file
|
|
|
|
struct stat st;
|
|
|
|
if (fstat(FD(), &st) < 0) {
|
|
|
|
ErrorOutput()->PrintError("Error: Failed to access %s file: %s\n",
|
|
|
|
fFileType, strerror(errno));
|
|
|
|
return errno;
|
|
|
|
}
|
|
|
|
|
|
|
|
// read the header
|
|
|
|
if ((error = ReadBuffer(0, &header, sizeof(header))) != B_OK)
|
|
|
|
return error;
|
|
|
|
|
|
|
|
// check the header
|
|
|
|
|
|
|
|
// magic
|
|
|
|
if (B_BENDIAN_TO_HOST_INT32(header.magic) != kMagic) {
|
|
|
|
ErrorOutput()->PrintError("Error: Invalid %s file: Invalid "
|
|
|
|
"magic\n", fFileType);
|
|
|
|
return B_BAD_DATA;
|
|
|
|
}
|
|
|
|
|
|
|
|
// version
|
|
|
|
if (B_BENDIAN_TO_HOST_INT16(header.version) != kVersion) {
|
2013-05-20 22:15:59 +04:00
|
|
|
if ((flags & B_HPKG_READER_DONT_PRINT_VERSION_MISMATCH_MESSAGE) == 0) {
|
|
|
|
ErrorOutput()->PrintError("Error: Invalid/unsupported %s file "
|
|
|
|
"version (%d)\n", fFileType,
|
|
|
|
B_BENDIAN_TO_HOST_INT16(header.version));
|
|
|
|
}
|
2013-05-18 06:11:01 +04:00
|
|
|
return B_MISMATCHED_VALUES;
|
|
|
|
}
|
|
|
|
|
2013-05-22 02:20:13 +04:00
|
|
|
fMinorFormatVersion = B_BENDIAN_TO_HOST_INT16(header.minor_version);
|
2013-05-24 00:59:40 +04:00
|
|
|
fCurrentMinorFormatVersion = kMinorVersion;
|
2013-05-22 02:20:13 +04:00
|
|
|
|
2013-05-18 06:11:01 +04:00
|
|
|
// header size
|
|
|
|
uint64 heapOffset = B_BENDIAN_TO_HOST_INT16(header.header_size);
|
|
|
|
if (heapOffset < (off_t)sizeof(header)) {
|
|
|
|
ErrorOutput()->PrintError("Error: Invalid %s file: Invalid header "
|
|
|
|
"size (%" B_PRIu64 ")\n", fFileType, heapOffset);
|
|
|
|
return B_BAD_DATA;
|
|
|
|
}
|
|
|
|
|
|
|
|
// total size
|
|
|
|
uint64 totalSize = B_BENDIAN_TO_HOST_INT64(header.total_size);
|
|
|
|
if (totalSize != (uint64)st.st_size) {
|
|
|
|
ErrorOutput()->PrintError("Error: Invalid %s file: Total size in "
|
|
|
|
"header (%" B_PRIu64 ") doesn't agree with total file size (%"
|
|
|
|
B_PRIdOFF ")\n", fFileType, totalSize, st.st_size);
|
|
|
|
return B_BAD_DATA;
|
|
|
|
}
|
|
|
|
|
|
|
|
// heap size
|
|
|
|
uint64 compressedHeapSize
|
|
|
|
= B_BENDIAN_TO_HOST_INT64(header.heap_size_compressed);
|
|
|
|
if (compressedHeapSize > totalSize
|
|
|
|
|| heapOffset > totalSize - compressedHeapSize) {
|
|
|
|
ErrorOutput()->PrintError("Error: Invalid %s file: Heap size in "
|
|
|
|
"header (%" B_PRIu64 ") doesn't agree with total file size (%"
|
|
|
|
B_PRIu64 ") and heap offset (%" B_PRIu64 ")\n", fFileType,
|
|
|
|
compressedHeapSize, totalSize, heapOffset);
|
|
|
|
return B_BAD_DATA;
|
|
|
|
}
|
|
|
|
|
|
|
|
error = InitHeapReader(
|
2013-05-22 02:20:13 +04:00
|
|
|
B_BENDIAN_TO_HOST_INT16(header.heap_compression),
|
2013-05-18 06:11:01 +04:00
|
|
|
B_BENDIAN_TO_HOST_INT32(header.heap_chunk_size), heapOffset,
|
|
|
|
compressedHeapSize,
|
|
|
|
B_BENDIAN_TO_HOST_INT64(header.heap_size_uncompressed));
|
|
|
|
if (error != B_OK)
|
|
|
|
return error;
|
|
|
|
|
|
|
|
return B_OK;
|
|
|
|
}
|
|
|
|
|
|
|
|
|
2011-02-14 16:09:09 +03:00
|
|
|
inline int
|
|
|
|
ReaderImplBase::FD() const
|
|
|
|
{
|
|
|
|
return fFD;
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
inline BErrorOutput*
|
|
|
|
ReaderImplBase::ErrorOutput() const
|
|
|
|
{
|
|
|
|
return fErrorOutput;
|
|
|
|
}
|
|
|
|
|
|
|
|
|
2013-05-18 06:11:01 +04:00
|
|
|
PackageFileSection*
|
2011-02-14 16:09:09 +03:00
|
|
|
ReaderImplBase::CurrentSection()
|
|
|
|
{
|
|
|
|
return fCurrentSection;
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
void
|
2013-05-18 06:11:01 +04:00
|
|
|
ReaderImplBase::SetCurrentSection(PackageFileSection* section)
|
2011-02-14 16:09:09 +03:00
|
|
|
{
|
|
|
|
fCurrentSection = section;
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
template<typename Type>
|
|
|
|
status_t
|
|
|
|
ReaderImplBase::_Read(Type& _value)
|
|
|
|
{
|
|
|
|
return _ReadSectionBuffer(&_value, sizeof(Type));
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
inline ReaderImplBase::AttributeHandler*
|
|
|
|
ReaderImplBase::CurrentAttributeHandler() const
|
|
|
|
{
|
|
|
|
return fAttributeHandlerStack.Head();
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
inline void
|
|
|
|
ReaderImplBase::PushAttributeHandler(AttributeHandler* handler)
|
|
|
|
{
|
|
|
|
fAttributeHandlerStack.Add(handler);
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
inline ReaderImplBase::AttributeHandler*
|
|
|
|
ReaderImplBase::PopAttributeHandler()
|
|
|
|
{
|
|
|
|
return fAttributeHandlerStack.RemoveHead();
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
inline void
|
|
|
|
ReaderImplBase::ClearAttributeHandlerStack()
|
|
|
|
{
|
|
|
|
fAttributeHandlerStack.MakeEmpty();
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
} // namespace BPrivate
|
|
|
|
|
|
|
|
} // namespace BHPKG
|
|
|
|
|
|
|
|
} // namespace BPackageKit
|
|
|
|
|
|
|
|
|
|
|
|
#endif // _PACKAGE__HPKG__PRIVATE__READER_IMPL_BASE_H_
|