--- a/misc/libphysfs/lzma/CPP/7zip/Archive/7z/7zIn.cpp Thu Oct 11 23:43:31 2018 +0200
+++ /dev/null Thu Jan 01 00:00:00 1970 +0000
@@ -1,1206 +0,0 @@
-// 7zIn.cpp
-
-#include "StdAfx.h"
-
-#include "7zIn.h"
-#include "7zDecode.h"
-#include "../../Common/StreamObjects.h"
-#include "../../Common/StreamUtils.h"
-extern "C"
-{
-#include "../../../../C/7zCrc.h"
-}
-
-// define FORMAT_7Z_RECOVERY if you want to recover multivolume archives with empty StartHeader
-#ifndef _SFX
-#define FORMAT_7Z_RECOVERY
-#endif
-
-namespace NArchive {
-namespace N7z {
-
-class CInArchiveException {};
-
-static void ThrowException() { throw CInArchiveException(); }
-static inline void ThrowEndOfData() { ThrowException(); }
-static inline void ThrowUnsupported() { ThrowException(); }
-static inline void ThrowIncorrect() { ThrowException(); }
-static inline void ThrowUnsupportedVersion() { ThrowException(); }
-
-/*
-class CInArchiveException
-{
-public:
- enum CCauseType
- {
- kUnsupportedVersion = 0,
- kUnsupported,
- kIncorrect,
- kEndOfData,
- } Cause;
- CInArchiveException(CCauseType cause): Cause(cause) {};
-};
-
-static void ThrowException(CInArchiveException::CCauseType c) { throw CInArchiveException(c); }
-static void ThrowEndOfData() { ThrowException(CInArchiveException::kEndOfData); }
-static void ThrowUnsupported() { ThrowException(CInArchiveException::kUnsupported); }
-static void ThrowIncorrect() { ThrowException(CInArchiveException::kIncorrect); }
-static void ThrowUnsupportedVersion() { ThrowException(CInArchiveException::kUnsupportedVersion); }
-*/
-
-class CStreamSwitch
-{
- CInArchive *_archive;
- bool _needRemove;
-public:
- CStreamSwitch(): _needRemove(false) {}
- ~CStreamSwitch() { Remove(); }
- void Remove();
- void Set(CInArchive *archive, const Byte *data, size_t size);
- void Set(CInArchive *archive, const CByteBuffer &byteBuffer);
- void Set(CInArchive *archive, const CObjectVector<CByteBuffer> *dataVector);
-};
-
-void CStreamSwitch::Remove()
-{
- if (_needRemove)
- {
- _archive->DeleteByteStream();
- _needRemove = false;
- }
-}
-
-void CStreamSwitch::Set(CInArchive *archive, const Byte *data, size_t size)
-{
- Remove();
- _archive = archive;
- _archive->AddByteStream(data, size);
- _needRemove = true;
-}
-
-void CStreamSwitch::Set(CInArchive *archive, const CByteBuffer &byteBuffer)
-{
- Set(archive, byteBuffer, byteBuffer.GetCapacity());
-}
-
-void CStreamSwitch::Set(CInArchive *archive, const CObjectVector<CByteBuffer> *dataVector)
-{
- Remove();
- Byte external = archive->ReadByte();
- if (external != 0)
- {
- int dataIndex = (int)archive->ReadNum();
- if (dataIndex < 0 || dataIndex >= dataVector->Size())
- ThrowIncorrect();
- Set(archive, (*dataVector)[dataIndex]);
- }
-}
-
-#if defined(_M_IX86) || defined(_M_X64) || defined(_M_AMD64) || defined(__i386__) || defined(__x86_64__)
-#define SZ_LITTLE_ENDIAN_UNALIGN
-#endif
-
-#ifdef SZ_LITTLE_ENDIAN_UNALIGN
-static inline UInt16 GetUInt16FromMem(const Byte *p) { return *(const UInt16 *)p; }
-static inline UInt32 GetUInt32FromMem(const Byte *p) { return *(const UInt32 *)p; }
-static inline UInt64 GetUInt64FromMem(const Byte *p) { return *(const UInt64 *)p; }
-#else
-static inline UInt16 GetUInt16FromMem(const Byte *p) { return p[0] | ((UInt16)p[1] << 8); }
-static inline UInt32 GetUInt32FromMem(const Byte *p) { return p[0] | ((UInt32)p[1] << 8) | ((UInt32)p[2] << 16) | ((UInt32)p[3] << 24); }
-static inline UInt64 GetUInt64FromMem(const Byte *p) { return GetUInt32FromMem(p) | ((UInt64)GetUInt32FromMem(p + 4) << 32); }
-#endif
-
-Byte CInByte2::ReadByte()
-{
- if (_pos >= _size)
- ThrowEndOfData();
- return _buffer[_pos++];
-}
-
-void CInByte2::ReadBytes(Byte *data, size_t size)
-{
- if (size > _size - _pos)
- ThrowEndOfData();
- for (size_t i = 0; i < size; i++)
- data[i] = _buffer[_pos++];
-}
-
-void CInByte2::SkeepData(UInt64 size)
-{
- if (size > _size - _pos)
- ThrowEndOfData();
-}
-
-void CInByte2::SkeepData()
-{
- SkeepData(ReadNumber());
-}
-
-UInt64 CInByte2::ReadNumber()
-{
- if (_pos >= _size)
- ThrowEndOfData();
- Byte firstByte = _buffer[_pos++];
- Byte mask = 0x80;
- UInt64 value = 0;
- for (int i = 0; i < 8; i++)
- {
- if ((firstByte & mask) == 0)
- {
- UInt64 highPart = firstByte & (mask - 1);
- value += (highPart << (i * 8));
- return value;
- }
- if (_pos >= _size)
- ThrowEndOfData();
- value |= ((UInt64)_buffer[_pos++] << (8 * i));
- mask >>= 1;
- }
- return value;
-}
-
-CNum CInByte2::ReadNum()
-{
- UInt64 value = ReadNumber();
- if (value > kNumMax)
- ThrowUnsupported();
- return (CNum)value;
-}
-
-UInt32 CInByte2::ReadUInt32()
-{
- if (_pos + 4 > _size)
- ThrowEndOfData();
- UInt32 res = GetUInt32FromMem(_buffer + _pos);
- _pos += 4;
- return res;
-}
-
-UInt64 CInByte2::ReadUInt64()
-{
- if (_pos + 8 > _size)
- ThrowEndOfData();
- UInt64 res = GetUInt64FromMem(_buffer + _pos);
- _pos += 8;
- return res;
-}
-
-void CInByte2::ReadString(UString &s)
-{
- const Byte *buf = _buffer + _pos;
- size_t rem = (_size - _pos) / 2 * 2;
- {
- size_t i;
- for (i = 0; i < rem; i += 2)
- if (buf[i] == 0 && buf[i + 1] == 0)
- break;
- if (i == rem)
- ThrowEndOfData();
- rem = i;
- }
- int len = (int)(rem / 2);
- if (len < 0 || (size_t)len * 2 != rem)
- ThrowUnsupported();
- wchar_t *p = s.GetBuffer(len);
- int i;
- for (i = 0; i < len; i++, buf += 2)
- p[i] = (wchar_t)GetUInt16FromMem(buf);
- p[i] = 0;
- s.ReleaseBuffer(len);
- _pos += rem + 2;
-}
-
-static inline bool TestSignatureCandidate(const Byte *p)
-{
- for (int i = 0; i < kSignatureSize; i++)
- if (p[i] != kSignature[i])
- return false;
- return (p[0x1A] == 0 && p[0x1B] == 0);
-}
-
-HRESULT CInArchive::FindAndReadSignature(IInStream *stream, const UInt64 *searchHeaderSizeLimit)
-{
- UInt32 processedSize;
- RINOK(ReadStream(stream, _header, kHeaderSize, &processedSize));
- if (processedSize != kHeaderSize)
- return S_FALSE;
- if (TestSignatureCandidate(_header))
- return S_OK;
-
- CByteBuffer byteBuffer;
- const UInt32 kBufferSize = (1 << 16);
- byteBuffer.SetCapacity(kBufferSize);
- Byte *buffer = byteBuffer;
- UInt32 numPrevBytes = kHeaderSize - 1;
- memcpy(buffer, _header + 1, numPrevBytes);
- UInt64 curTestPos = _arhiveBeginStreamPosition + 1;
- for (;;)
- {
- if (searchHeaderSizeLimit != NULL)
- if (curTestPos - _arhiveBeginStreamPosition > *searchHeaderSizeLimit)
- break;
- UInt32 numReadBytes = kBufferSize - numPrevBytes;
- RINOK(stream->Read(buffer + numPrevBytes, numReadBytes, &processedSize));
- UInt32 numBytesInBuffer = numPrevBytes + processedSize;
- if (numBytesInBuffer < kHeaderSize)
- break;
- UInt32 numTests = numBytesInBuffer - kHeaderSize + 1;
- for(UInt32 pos = 0; pos < numTests; pos++, curTestPos++)
- {
- if (TestSignatureCandidate(buffer + pos))
- {
- memcpy(_header, buffer + pos, kHeaderSize);
- _arhiveBeginStreamPosition = curTestPos;
- return stream->Seek(curTestPos + kHeaderSize, STREAM_SEEK_SET, NULL);
- }
- }
- numPrevBytes = numBytesInBuffer - numTests;
- memmove(buffer, buffer + numTests, numPrevBytes);
- }
- return S_FALSE;
-}
-
-// S_FALSE means that file is not archive
-HRESULT CInArchive::Open(IInStream *stream, const UInt64 *searchHeaderSizeLimit)
-{
- Close();
- RINOK(stream->Seek(0, STREAM_SEEK_CUR, &_arhiveBeginStreamPosition))
- RINOK(FindAndReadSignature(stream, searchHeaderSizeLimit));
- _stream = stream;
- return S_OK;
-}
-
-void CInArchive::Close()
-{
- _stream.Release();
-}
-
-void CInArchive::ReadArchiveProperties(CInArchiveInfo & /* archiveInfo */)
-{
- for (;;)
- {
- if (ReadID() == NID::kEnd)
- break;
- SkeepData();
- }
-}
-
-void CInArchive::GetNextFolderItem(CFolder &folder)
-{
- CNum numCoders = ReadNum();
-
- folder.Coders.Clear();
- folder.Coders.Reserve((int)numCoders);
- CNum numInStreams = 0;
- CNum numOutStreams = 0;
- CNum i;
- for (i = 0; i < numCoders; i++)
- {
- folder.Coders.Add(CCoderInfo());
- CCoderInfo &coder = folder.Coders.Back();
-
- {
- Byte mainByte = ReadByte();
- int idSize = (mainByte & 0xF);
- Byte longID[15];
- ReadBytes(longID, idSize);
- if (idSize > 8)
- ThrowUnsupported();
- UInt64 id = 0;
- for (int j = 0; j < idSize; j++)
- id |= (UInt64)longID[idSize - 1 - j] << (8 * j);
- coder.MethodID = id;
-
- if ((mainByte & 0x10) != 0)
- {
- coder.NumInStreams = ReadNum();
- coder.NumOutStreams = ReadNum();
- }
- else
- {
- coder.NumInStreams = 1;
- coder.NumOutStreams = 1;
- }
- if ((mainByte & 0x20) != 0)
- {
- CNum propertiesSize = ReadNum();
- coder.Properties.SetCapacity((size_t)propertiesSize);
- ReadBytes((Byte *)coder.Properties, (size_t)propertiesSize);
- }
- if ((mainByte & 0x80) != 0)
- ThrowUnsupported();
- }
- numInStreams += coder.NumInStreams;
- numOutStreams += coder.NumOutStreams;
- }
-
- CNum numBindPairs;
- numBindPairs = numOutStreams - 1;
- folder.BindPairs.Clear();
- folder.BindPairs.Reserve(numBindPairs);
- for (i = 0; i < numBindPairs; i++)
- {
- CBindPair bindPair;
- bindPair.InIndex = ReadNum();
- bindPair.OutIndex = ReadNum();
- folder.BindPairs.Add(bindPair);
- }
-
- CNum numPackedStreams = numInStreams - numBindPairs;
- folder.PackStreams.Reserve(numPackedStreams);
- if (numPackedStreams == 1)
- {
- for (CNum j = 0; j < numInStreams; j++)
- if (folder.FindBindPairForInStream(j) < 0)
- {
- folder.PackStreams.Add(j);
- break;
- }
- }
- else
- for(i = 0; i < numPackedStreams; i++)
- folder.PackStreams.Add(ReadNum());
-}
-
-void CInArchive::WaitAttribute(UInt64 attribute)
-{
- for (;;)
- {
- UInt64 type = ReadID();
- if (type == attribute)
- return;
- if (type == NID::kEnd)
- ThrowIncorrect();
- SkeepData();
- }
-}
-
-void CInArchive::ReadHashDigests(int numItems,
- CRecordVector<bool> &digestsDefined,
- CRecordVector<UInt32> &digests)
-{
- ReadBoolVector2(numItems, digestsDefined);
- digests.Clear();
- digests.Reserve(numItems);
- for(int i = 0; i < numItems; i++)
- {
- UInt32 crc = 0;
- if (digestsDefined[i])
- crc = ReadUInt32();
- digests.Add(crc);
- }
-}
-
-void CInArchive::ReadPackInfo(
- UInt64 &dataOffset,
- CRecordVector<UInt64> &packSizes,
- CRecordVector<bool> &packCRCsDefined,
- CRecordVector<UInt32> &packCRCs)
-{
- dataOffset = ReadNumber();
- CNum numPackStreams = ReadNum();
-
- WaitAttribute(NID::kSize);
- packSizes.Clear();
- packSizes.Reserve(numPackStreams);
- for (CNum i = 0; i < numPackStreams; i++)
- packSizes.Add(ReadNumber());
-
- UInt64 type;
- for (;;)
- {
- type = ReadID();
- if (type == NID::kEnd)
- break;
- if (type == NID::kCRC)
- {
- ReadHashDigests(numPackStreams, packCRCsDefined, packCRCs);
- continue;
- }
- SkeepData();
- }
- if (packCRCsDefined.IsEmpty())
- {
- packCRCsDefined.Reserve(numPackStreams);
- packCRCsDefined.Clear();
- packCRCs.Reserve(numPackStreams);
- packCRCs.Clear();
- for(CNum i = 0; i < numPackStreams; i++)
- {
- packCRCsDefined.Add(false);
- packCRCs.Add(0);
- }
- }
-}
-
-void CInArchive::ReadUnPackInfo(
- const CObjectVector<CByteBuffer> *dataVector,
- CObjectVector<CFolder> &folders)
-{
- WaitAttribute(NID::kFolder);
- CNum numFolders = ReadNum();
-
- {
- CStreamSwitch streamSwitch;
- streamSwitch.Set(this, dataVector);
- folders.Clear();
- folders.Reserve(numFolders);
- for(CNum i = 0; i < numFolders; i++)
- {
- folders.Add(CFolder());
- GetNextFolderItem(folders.Back());
- }
- }
-
- WaitAttribute(NID::kCodersUnPackSize);
-
- CNum i;
- for (i = 0; i < numFolders; i++)
- {
- CFolder &folder = folders[i];
- CNum numOutStreams = folder.GetNumOutStreams();
- folder.UnPackSizes.Reserve(numOutStreams);
- for (CNum j = 0; j < numOutStreams; j++)
- folder.UnPackSizes.Add(ReadNumber());
- }
-
- for (;;)
- {
- UInt64 type = ReadID();
- if (type == NID::kEnd)
- return;
- if (type == NID::kCRC)
- {
- CRecordVector<bool> crcsDefined;
- CRecordVector<UInt32> crcs;
- ReadHashDigests(numFolders, crcsDefined, crcs);
- for(i = 0; i < numFolders; i++)
- {
- CFolder &folder = folders[i];
- folder.UnPackCRCDefined = crcsDefined[i];
- folder.UnPackCRC = crcs[i];
- }
- continue;
- }
- SkeepData();
- }
-}
-
-void CInArchive::ReadSubStreamsInfo(
- const CObjectVector<CFolder> &folders,
- CRecordVector<CNum> &numUnPackStreamsInFolders,
- CRecordVector<UInt64> &unPackSizes,
- CRecordVector<bool> &digestsDefined,
- CRecordVector<UInt32> &digests)
-{
- numUnPackStreamsInFolders.Clear();
- numUnPackStreamsInFolders.Reserve(folders.Size());
- UInt64 type;
- for (;;)
- {
- type = ReadID();
- if (type == NID::kNumUnPackStream)
- {
- for(int i = 0; i < folders.Size(); i++)
- numUnPackStreamsInFolders.Add(ReadNum());
- continue;
- }
- if (type == NID::kCRC || type == NID::kSize)
- break;
- if (type == NID::kEnd)
- break;
- SkeepData();
- }
-
- if (numUnPackStreamsInFolders.IsEmpty())
- for(int i = 0; i < folders.Size(); i++)
- numUnPackStreamsInFolders.Add(1);
-
- int i;
- for(i = 0; i < numUnPackStreamsInFolders.Size(); i++)
- {
- // v3.13 incorrectly worked with empty folders
- // v4.07: we check that folder is empty
- CNum numSubstreams = numUnPackStreamsInFolders[i];
- if (numSubstreams == 0)
- continue;
- UInt64 sum = 0;
- for (CNum j = 1; j < numSubstreams; j++)
- if (type == NID::kSize)
- {
- UInt64 size = ReadNumber();
- unPackSizes.Add(size);
- sum += size;
- }
- unPackSizes.Add(folders[i].GetUnPackSize() - sum);
- }
- if (type == NID::kSize)
- type = ReadID();
-
- int numDigests = 0;
- int numDigestsTotal = 0;
- for(i = 0; i < folders.Size(); i++)
- {
- CNum numSubstreams = numUnPackStreamsInFolders[i];
- if (numSubstreams != 1 || !folders[i].UnPackCRCDefined)
- numDigests += numSubstreams;
- numDigestsTotal += numSubstreams;
- }
-
- for (;;)
- {
- if (type == NID::kCRC)
- {
- CRecordVector<bool> digestsDefined2;
- CRecordVector<UInt32> digests2;
- ReadHashDigests(numDigests, digestsDefined2, digests2);
- int digestIndex = 0;
- for (i = 0; i < folders.Size(); i++)
- {
- CNum numSubstreams = numUnPackStreamsInFolders[i];
- const CFolder &folder = folders[i];
- if (numSubstreams == 1 && folder.UnPackCRCDefined)
- {
- digestsDefined.Add(true);
- digests.Add(folder.UnPackCRC);
- }
- else
- for (CNum j = 0; j < numSubstreams; j++, digestIndex++)
- {
- digestsDefined.Add(digestsDefined2[digestIndex]);
- digests.Add(digests2[digestIndex]);
- }
- }
- }
- else if (type == NID::kEnd)
- {
- if (digestsDefined.IsEmpty())
- {
- digestsDefined.Clear();
- digests.Clear();
- for (int i = 0; i < numDigestsTotal; i++)
- {
- digestsDefined.Add(false);
- digests.Add(0);
- }
- }
- return;
- }
- else
- SkeepData();
- type = ReadID();
- }
-}
-
-void CInArchive::ReadStreamsInfo(
- const CObjectVector<CByteBuffer> *dataVector,
- UInt64 &dataOffset,
- CRecordVector<UInt64> &packSizes,
- CRecordVector<bool> &packCRCsDefined,
- CRecordVector<UInt32> &packCRCs,
- CObjectVector<CFolder> &folders,
- CRecordVector<CNum> &numUnPackStreamsInFolders,
- CRecordVector<UInt64> &unPackSizes,
- CRecordVector<bool> &digestsDefined,
- CRecordVector<UInt32> &digests)
-{
- for (;;)
- {
- UInt64 type = ReadID();
- if (type > ((UInt32)1 << 30))
- ThrowIncorrect();
- switch((UInt32)type)
- {
- case NID::kEnd:
- return;
- case NID::kPackInfo:
- {
- ReadPackInfo(dataOffset, packSizes, packCRCsDefined, packCRCs);
- break;
- }
- case NID::kUnPackInfo:
- {
- ReadUnPackInfo(dataVector, folders);
- break;
- }
- case NID::kSubStreamsInfo:
- {
- ReadSubStreamsInfo(folders, numUnPackStreamsInFolders,
- unPackSizes, digestsDefined, digests);
- break;
- }
- default:
- ThrowIncorrect();
- }
- }
-}
-
-void CInArchive::ReadBoolVector(int numItems, CBoolVector &v)
-{
- v.Clear();
- v.Reserve(numItems);
- Byte b = 0;
- Byte mask = 0;
- for(int i = 0; i < numItems; i++)
- {
- if (mask == 0)
- {
- b = ReadByte();
- mask = 0x80;
- }
- v.Add((b & mask) != 0);
- mask >>= 1;
- }
-}
-
-void CInArchive::ReadBoolVector2(int numItems, CBoolVector &v)
-{
- Byte allAreDefined = ReadByte();
- if (allAreDefined == 0)
- {
- ReadBoolVector(numItems, v);
- return;
- }
- v.Clear();
- v.Reserve(numItems);
- for (int i = 0; i < numItems; i++)
- v.Add(true);
-}
-
-void CInArchive::ReadTime(const CObjectVector<CByteBuffer> &dataVector,
- CObjectVector<CFileItem> &files, UInt32 type)
-{
- CBoolVector boolVector;
- ReadBoolVector2(files.Size(), boolVector);
-
- CStreamSwitch streamSwitch;
- streamSwitch.Set(this, &dataVector);
-
- for(int i = 0; i < files.Size(); i++)
- {
- CFileItem &file = files[i];
- CArchiveFileTime fileTime;
- fileTime.dwLowDateTime = 0;
- fileTime.dwHighDateTime = 0;
- bool defined = boolVector[i];
- if (defined)
- {
- fileTime.dwLowDateTime = ReadUInt32();
- fileTime.dwHighDateTime = ReadUInt32();
- }
- switch(type)
- {
- case NID::kCreationTime:
- file.IsCreationTimeDefined = defined;
- if (defined)
- file.CreationTime = fileTime;
- break;
- case NID::kLastWriteTime:
- file.IsLastWriteTimeDefined = defined;
- if (defined)
- file.LastWriteTime = fileTime;
- break;
- case NID::kLastAccessTime:
- file.IsLastAccessTimeDefined = defined;
- if (defined)
- file.LastAccessTime = fileTime;
- break;
- }
- }
-}
-
-HRESULT CInArchive::ReadAndDecodePackedStreams(
- DECL_EXTERNAL_CODECS_LOC_VARS
- UInt64 baseOffset,
- UInt64 &dataOffset, CObjectVector<CByteBuffer> &dataVector
- #ifndef _NO_CRYPTO
- , ICryptoGetTextPassword *getTextPassword
- #endif
- )
-{
- CRecordVector<UInt64> packSizes;
- CRecordVector<bool> packCRCsDefined;
- CRecordVector<UInt32> packCRCs;
- CObjectVector<CFolder> folders;
-
- CRecordVector<CNum> numUnPackStreamsInFolders;
- CRecordVector<UInt64> unPackSizes;
- CRecordVector<bool> digestsDefined;
- CRecordVector<UInt32> digests;
-
- ReadStreamsInfo(NULL,
- dataOffset,
- packSizes,
- packCRCsDefined,
- packCRCs,
- folders,
- numUnPackStreamsInFolders,
- unPackSizes,
- digestsDefined,
- digests);
-
- // database.ArchiveInfo.DataStartPosition2 += database.ArchiveInfo.StartPositionAfterHeader;
-
- CNum packIndex = 0;
- CDecoder decoder(
- #ifdef _ST_MODE
- false
- #else
- true
- #endif
- );
- UInt64 dataStartPos = baseOffset + dataOffset;
- for(int i = 0; i < folders.Size(); i++)
- {
- const CFolder &folder = folders[i];
- dataVector.Add(CByteBuffer());
- CByteBuffer &data = dataVector.Back();
- UInt64 unPackSize64 = folder.GetUnPackSize();
- size_t unPackSize = (size_t)unPackSize64;
- if (unPackSize != unPackSize64)
- ThrowUnsupported();
- data.SetCapacity(unPackSize);
-
- CSequentialOutStreamImp2 *outStreamSpec = new CSequentialOutStreamImp2;
- CMyComPtr<ISequentialOutStream> outStream = outStreamSpec;
- outStreamSpec->Init(data, unPackSize);
-
- HRESULT result = decoder.Decode(
- EXTERNAL_CODECS_LOC_VARS
- _stream, dataStartPos,
- &packSizes[packIndex], folder, outStream, NULL
- #ifndef _NO_CRYPTO
- , getTextPassword
- #endif
- #ifdef COMPRESS_MT
- , false, 1
- #endif
- );
- RINOK(result);
-
- if (folder.UnPackCRCDefined)
- if (CrcCalc(data, unPackSize) != folder.UnPackCRC)
- ThrowIncorrect();
- for (int j = 0; j < folder.PackStreams.Size(); j++)
- dataStartPos += packSizes[packIndex++];
- }
- return S_OK;
-}
-
-HRESULT CInArchive::ReadHeader(
- DECL_EXTERNAL_CODECS_LOC_VARS
- CArchiveDatabaseEx &database
- #ifndef _NO_CRYPTO
- , ICryptoGetTextPassword *getTextPassword
- #endif
- )
-{
- UInt64 type = ReadID();
-
- if (type == NID::kArchiveProperties)
- {
- ReadArchiveProperties(database.ArchiveInfo);
- type = ReadID();
- }
-
- CObjectVector<CByteBuffer> dataVector;
-
- if (type == NID::kAdditionalStreamsInfo)
- {
- HRESULT result = ReadAndDecodePackedStreams(
- EXTERNAL_CODECS_LOC_VARS
- database.ArchiveInfo.StartPositionAfterHeader,
- database.ArchiveInfo.DataStartPosition2,
- dataVector
- #ifndef _NO_CRYPTO
- , getTextPassword
- #endif
- );
- RINOK(result);
- database.ArchiveInfo.DataStartPosition2 += database.ArchiveInfo.StartPositionAfterHeader;
- type = ReadID();
- }
-
- CRecordVector<UInt64> unPackSizes;
- CRecordVector<bool> digestsDefined;
- CRecordVector<UInt32> digests;
-
- if (type == NID::kMainStreamsInfo)
- {
- ReadStreamsInfo(&dataVector,
- database.ArchiveInfo.DataStartPosition,
- database.PackSizes,
- database.PackCRCsDefined,
- database.PackCRCs,
- database.Folders,
- database.NumUnPackStreamsVector,
- unPackSizes,
- digestsDefined,
- digests);
- database.ArchiveInfo.DataStartPosition += database.ArchiveInfo.StartPositionAfterHeader;
- type = ReadID();
- }
- else
- {
- for(int i = 0; i < database.Folders.Size(); i++)
- {
- database.NumUnPackStreamsVector.Add(1);
- CFolder &folder = database.Folders[i];
- unPackSizes.Add(folder.GetUnPackSize());
- digestsDefined.Add(folder.UnPackCRCDefined);
- digests.Add(folder.UnPackCRC);
- }
- }
-
- database.Files.Clear();
-
- if (type == NID::kEnd)
- return S_OK;
- if (type != NID::kFilesInfo)
- ThrowIncorrect();
-
- CNum numFiles = ReadNum();
- database.Files.Reserve(numFiles);
- CNum i;
- for(i = 0; i < numFiles; i++)
- database.Files.Add(CFileItem());
-
- database.ArchiveInfo.FileInfoPopIDs.Add(NID::kSize);
- if (!database.PackSizes.IsEmpty())
- database.ArchiveInfo.FileInfoPopIDs.Add(NID::kPackInfo);
- if (numFiles > 0 && !digests.IsEmpty())
- database.ArchiveInfo.FileInfoPopIDs.Add(NID::kCRC);
-
- CBoolVector emptyStreamVector;
- emptyStreamVector.Reserve((int)numFiles);
- for(i = 0; i < numFiles; i++)
- emptyStreamVector.Add(false);
- CBoolVector emptyFileVector;
- CBoolVector antiFileVector;
- CNum numEmptyStreams = 0;
-
- for (;;)
- {
- UInt64 type = ReadID();
- if (type == NID::kEnd)
- break;
- UInt64 size = ReadNumber();
- bool isKnownType = true;
- if (type > ((UInt32)1 << 30))
- isKnownType = false;
- else switch((UInt32)type)
- {
- case NID::kName:
- {
- CStreamSwitch streamSwitch;
- streamSwitch.Set(this, &dataVector);
- for(int i = 0; i < database.Files.Size(); i++)
- _inByteBack->ReadString(database.Files[i].Name);
- break;
- }
- case NID::kWinAttributes:
- {
- CBoolVector boolVector;
- ReadBoolVector2(database.Files.Size(), boolVector);
- CStreamSwitch streamSwitch;
- streamSwitch.Set(this, &dataVector);
- for(i = 0; i < numFiles; i++)
- {
- CFileItem &file = database.Files[i];
- file.AreAttributesDefined = boolVector[i];
- if (file.AreAttributesDefined)
- file.Attributes = ReadUInt32();
- }
- break;
- }
- case NID::kStartPos:
- {
- CBoolVector boolVector;
- ReadBoolVector2(database.Files.Size(), boolVector);
- CStreamSwitch streamSwitch;
- streamSwitch.Set(this, &dataVector);
- for(i = 0; i < numFiles; i++)
- {
- CFileItem &file = database.Files[i];
- file.IsStartPosDefined = boolVector[i];
- if (file.IsStartPosDefined)
- file.StartPos = ReadUInt64();
- }
- break;
- }
- case NID::kEmptyStream:
- {
- ReadBoolVector(numFiles, emptyStreamVector);
- for (i = 0; i < (CNum)emptyStreamVector.Size(); i++)
- if (emptyStreamVector[i])
- numEmptyStreams++;
- emptyFileVector.Reserve(numEmptyStreams);
- antiFileVector.Reserve(numEmptyStreams);
- for (i = 0; i < numEmptyStreams; i++)
- {
- emptyFileVector.Add(false);
- antiFileVector.Add(false);
- }
- break;
- }
- case NID::kEmptyFile:
- {
- ReadBoolVector(numEmptyStreams, emptyFileVector);
- break;
- }
- case NID::kAnti:
- {
- ReadBoolVector(numEmptyStreams, antiFileVector);
- break;
- }
- case NID::kCreationTime:
- case NID::kLastWriteTime:
- case NID::kLastAccessTime:
- {
- ReadTime(dataVector, database.Files, (UInt32)type);
- break;
- }
- default:
- isKnownType = false;
- }
- if (isKnownType)
- database.ArchiveInfo.FileInfoPopIDs.Add(type);
- else
- SkeepData(size);
- }
-
- CNum emptyFileIndex = 0;
- CNum sizeIndex = 0;
- for(i = 0; i < numFiles; i++)
- {
- CFileItem &file = database.Files[i];
- file.HasStream = !emptyStreamVector[i];
- if(file.HasStream)
- {
- file.IsDirectory = false;
- file.IsAnti = false;
- file.UnPackSize = unPackSizes[sizeIndex];
- file.FileCRC = digests[sizeIndex];
- file.IsFileCRCDefined = digestsDefined[sizeIndex];
- sizeIndex++;
- }
- else
- {
- file.IsDirectory = !emptyFileVector[emptyFileIndex];
- file.IsAnti = antiFileVector[emptyFileIndex];
- emptyFileIndex++;
- file.UnPackSize = 0;
- file.IsFileCRCDefined = false;
- }
- }
- return S_OK;
-}
-
-
-void CArchiveDatabaseEx::FillFolderStartPackStream()
-{
- FolderStartPackStreamIndex.Clear();
- FolderStartPackStreamIndex.Reserve(Folders.Size());
- CNum startPos = 0;
- for(int i = 0; i < Folders.Size(); i++)
- {
- FolderStartPackStreamIndex.Add(startPos);
- startPos += (CNum)Folders[i].PackStreams.Size();
- }
-}
-
-void CArchiveDatabaseEx::FillStartPos()
-{
- PackStreamStartPositions.Clear();
- PackStreamStartPositions.Reserve(PackSizes.Size());
- UInt64 startPos = 0;
- for(int i = 0; i < PackSizes.Size(); i++)
- {
- PackStreamStartPositions.Add(startPos);
- startPos += PackSizes[i];
- }
-}
-
-void CArchiveDatabaseEx::FillFolderStartFileIndex()
-{
- FolderStartFileIndex.Clear();
- FolderStartFileIndex.Reserve(Folders.Size());
- FileIndexToFolderIndexMap.Clear();
- FileIndexToFolderIndexMap.Reserve(Files.Size());
-
- int folderIndex = 0;
- CNum indexInFolder = 0;
- for (int i = 0; i < Files.Size(); i++)
- {
- const CFileItem &file = Files[i];
- bool emptyStream = !file.HasStream;
- if (emptyStream && indexInFolder == 0)
- {
- FileIndexToFolderIndexMap.Add(kNumNoIndex);
- continue;
- }
- if (indexInFolder == 0)
- {
- // v3.13 incorrectly worked with empty folders
- // v4.07: Loop for skipping empty folders
- for (;;)
- {
- if (folderIndex >= Folders.Size())
- ThrowIncorrect();
- FolderStartFileIndex.Add(i); // check it
- if (NumUnPackStreamsVector[folderIndex] != 0)
- break;
- folderIndex++;
- }
- }
- FileIndexToFolderIndexMap.Add(folderIndex);
- if (emptyStream)
- continue;
- indexInFolder++;
- if (indexInFolder >= NumUnPackStreamsVector[folderIndex])
- {
- folderIndex++;
- indexInFolder = 0;
- }
- }
-}
-
-HRESULT CInArchive::ReadDatabase2(
- DECL_EXTERNAL_CODECS_LOC_VARS
- CArchiveDatabaseEx &database
- #ifndef _NO_CRYPTO
- , ICryptoGetTextPassword *getTextPassword
- #endif
- )
-{
- database.Clear();
- database.ArchiveInfo.StartPosition = _arhiveBeginStreamPosition;
-
- database.ArchiveInfo.Version.Major = _header[6];
- database.ArchiveInfo.Version.Minor = _header[7];
-
- if (database.ArchiveInfo.Version.Major != kMajorVersion)
- ThrowUnsupportedVersion();
-
- UInt32 crcFromArchive = GetUInt32FromMem(_header + 8);
- UInt64 nextHeaderOffset = GetUInt64FromMem(_header + 0xC);
- UInt64 nextHeaderSize = GetUInt64FromMem(_header + 0x14);
- UInt32 nextHeaderCRC = GetUInt32FromMem(_header + 0x1C);
- UInt32 crc = CrcCalc(_header + 0xC, 20);
-
- #ifdef FORMAT_7Z_RECOVERY
- if (crcFromArchive == 0 && nextHeaderOffset == 0 && nextHeaderSize == 0 && nextHeaderCRC == 0)
- {
- UInt64 cur, cur2;
- RINOK(_stream->Seek(0, STREAM_SEEK_CUR, &cur));
- const int kCheckSize = 500;
- Byte buf[kCheckSize];
- RINOK(_stream->Seek(0, STREAM_SEEK_END, &cur2));
- int checkSize = kCheckSize;
- if (cur2 - cur < kCheckSize)
- checkSize = (int)(cur2 - cur);
- RINOK(_stream->Seek(-checkSize, STREAM_SEEK_END, &cur2));
-
- UInt32 realProcessedSize;
- RINOK(_stream->Read(buf, (UInt32)kCheckSize, &realProcessedSize));
-
- int i;
- for (i = (int)realProcessedSize - 2; i >= 0; i--)
- if (buf[i] == 0x17 && buf[i + 1] == 0x6 || buf[i] == 0x01 && buf[i + 1] == 0x04)
- break;
- if (i < 0)
- return S_FALSE;
- nextHeaderSize = realProcessedSize - i;
- nextHeaderOffset = cur2 - cur + i;
- nextHeaderCRC = CrcCalc(buf + i, (size_t)nextHeaderSize);
- RINOK(_stream->Seek(cur, STREAM_SEEK_SET, NULL));
- }
- #endif
-
- #ifdef FORMAT_7Z_RECOVERY
- crcFromArchive = crc;
- #endif
-
- database.ArchiveInfo.StartPositionAfterHeader = _arhiveBeginStreamPosition + kHeaderSize;
-
- if (crc != crcFromArchive)
- ThrowIncorrect();
-
- if (nextHeaderSize == 0)
- return S_OK;
-
- if (nextHeaderSize > (UInt64)0xFFFFFFFF)
- return S_FALSE;
-
- RINOK(_stream->Seek(nextHeaderOffset, STREAM_SEEK_CUR, NULL));
-
- CByteBuffer buffer2;
- buffer2.SetCapacity((size_t)nextHeaderSize);
-
- UInt32 realProcessedSize;
- RINOK(_stream->Read(buffer2, (UInt32)nextHeaderSize, &realProcessedSize));
- if (realProcessedSize != (UInt32)nextHeaderSize)
- return S_FALSE;
- if (CrcCalc(buffer2, (UInt32)nextHeaderSize) != nextHeaderCRC)
- ThrowIncorrect();
-
- CStreamSwitch streamSwitch;
- streamSwitch.Set(this, buffer2);
-
- CObjectVector<CByteBuffer> dataVector;
-
- for (;;)
- {
- UInt64 type = ReadID();
- if (type == NID::kHeader)
- break;
- if (type != NID::kEncodedHeader)
- ThrowIncorrect();
- HRESULT result = ReadAndDecodePackedStreams(
- EXTERNAL_CODECS_LOC_VARS
- database.ArchiveInfo.StartPositionAfterHeader,
- database.ArchiveInfo.DataStartPosition2,
- dataVector
- #ifndef _NO_CRYPTO
- , getTextPassword
- #endif
- );
- RINOK(result);
- if (dataVector.Size() == 0)
- return S_OK;
- if (dataVector.Size() > 1)
- ThrowIncorrect();
- streamSwitch.Remove();
- streamSwitch.Set(this, dataVector.Front());
- }
-
- return ReadHeader(
- EXTERNAL_CODECS_LOC_VARS
- database
- #ifndef _NO_CRYPTO
- , getTextPassword
- #endif
- );
-}
-
-HRESULT CInArchive::ReadDatabase(
- DECL_EXTERNAL_CODECS_LOC_VARS
- CArchiveDatabaseEx &database
- #ifndef _NO_CRYPTO
- , ICryptoGetTextPassword *getTextPassword
- #endif
- )
-{
- try
- {
- return ReadDatabase2(
- EXTERNAL_CODECS_LOC_VARS database
- #ifndef _NO_CRYPTO
- , getTextPassword
- #endif
- );
- }
- catch(CInArchiveException &) { return S_FALSE; }
-}
-
-}}