HRESULT CHandler::Open2(IInStream *stream)
{
UInt64 archiveStartPos;
RINOK(stream->Seek(0, STREAM_SEEK_SET, &archiveStartPos));
const UInt32 kHeaderSize = 0x1C;
Byte buf[kHeaderSize];
RINOK(ReadStream_FALSE(stream, buf, kHeaderSize));
UInt32 size = Get16(buf + 4);
// UInt32 ver = Get16(buf + 6); // == 0
if (Get32(buf) != 0x78617221 || size != kHeaderSize)
return S_FALSE;
UInt64 packSize = Get64(buf + 8);
UInt64 unpackSize = Get64(buf + 0x10);
// UInt32 checkSumAlogo = Get32(buf + 0x18);
if (unpackSize >= kXmlSizeMax)
return S_FALSE;
_dataStartPos = archiveStartPos + kHeaderSize + packSize;
char *ss = _xml.GetBuffer((int)unpackSize + 1);
NCompress::NZlib::CDecoder *zlibCoderSpec = new NCompress::NZlib::CDecoder();
CMyComPtr<ICompressCoder> zlibCoder = zlibCoderSpec;
CLimitedSequentialInStream *inStreamLimSpec = new CLimitedSequentialInStream;
CMyComPtr<ISequentialInStream> inStreamLim(inStreamLimSpec);
inStreamLimSpec->SetStream(stream);
inStreamLimSpec->Init(packSize);
CBufPtrSeqOutStream *outStreamLimSpec = new CBufPtrSeqOutStream;
CMyComPtr<ISequentialOutStream> outStreamLim(outStreamLimSpec);
outStreamLimSpec->Init((Byte *)ss, (size_t)unpackSize);
RINOK(zlibCoder->Code(inStreamLim, outStreamLim, NULL, NULL, NULL));
if (outStreamLimSpec->GetPos() != (size_t)unpackSize)
return S_FALSE;
ss[(size_t)unpackSize] = 0;
_xml.ReleaseBuffer();
CXml xml;
if (!xml.Parse(_xml))
return S_FALSE;
if (!xml.Root.IsTagged("xar") || xml.Root.SubItems.Size() != 1)
return S_FALSE;
const CXmlItem &toc = xml.Root.SubItems[0];
if (!toc.IsTagged("toc"))
return S_FALSE;
if (!AddItem(toc, _files, -1))
return S_FALSE;
return S_OK;
}
HRESULT CInArchive::ReadAndDecodePackedStreams(
DECL_EXTERNAL_CODECS_LOC_VARS
UInt64 baseOffset,
UInt64 &dataOffset, CObjectVector<CByteBuffer> &dataVector
#ifndef _NO_CRYPTO
, ICryptoGetTextPassword *getTextPassword, bool &passwordIsDefined
#endif
)
{
CRecordVector<UInt64> packSizes;
CBoolVector packCRCsDefined;
CRecordVector<UInt32> packCRCs;
CObjectVector<CFolder> folders;
CRecordVector<CNum> numUnpackStreamsInFolders;
CRecordVector<UInt64> unpackSizes;
CBoolVector digestsDefined;
CRecordVector<UInt32> digests;
ReadStreamsInfo(NULL,
dataOffset,
packSizes,
packCRCsDefined,
packCRCs,
folders,
numUnpackStreamsInFolders,
unpackSizes,
digestsDefined,
digests);
// db.ArchiveInfo.DataStartPosition2 += db.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);
CBufPtrSeqOutStream *outStreamSpec = new CBufPtrSeqOutStream;
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, passwordIsDefined
#endif
#if !defined(_7ZIP_ST) && !defined(_SFX)
, false, 1
#endif
);
RINOK(result);
if (folder.UnpackCRCDefined)
if (CrcCalc(data, unpackSize) != folder.UnpackCRC)
ThrowIncorrect();
for (int j = 0; j < folder.PackStreams.Size(); j++)
{
UInt64 packSize = packSizes[packIndex++];
dataStartPos += packSize;
HeadersSize += packSize;
}
}
return S_OK;
}
HRESULT CHandler::Open2(IInStream *stream)
{
const UInt32 kHeaderSize = 0x1C;
Byte buf[kHeaderSize];
RINOK(ReadStream_FALSE(stream, buf, kHeaderSize));
UInt32 size = Get16(buf + 4);
// UInt32 ver = Get16(buf + 6); // == 1
if (Get32(buf) != 0x78617221 || size != kHeaderSize)
return S_FALSE;
UInt64 packSize = Get64(buf + 8);
UInt64 unpackSize = Get64(buf + 0x10);
// _checkSumAlgo = Get32(buf + 0x18);
if (packSize >= kXmlPackSizeMax ||
unpackSize >= kXmlSizeMax)
return S_FALSE;
_dataStartPos = kHeaderSize + packSize;
_phySize = _dataStartPos;
_xml.Alloc((size_t)unpackSize + 1);
_xmlLen = (size_t)unpackSize;
NCompress::NZlib::CDecoder *zlibCoderSpec = new NCompress::NZlib::CDecoder();
CMyComPtr<ICompressCoder> zlibCoder = zlibCoderSpec;
CLimitedSequentialInStream *inStreamLimSpec = new CLimitedSequentialInStream;
CMyComPtr<ISequentialInStream> inStreamLim(inStreamLimSpec);
inStreamLimSpec->SetStream(stream);
inStreamLimSpec->Init(packSize);
CBufPtrSeqOutStream *outStreamLimSpec = new CBufPtrSeqOutStream;
CMyComPtr<ISequentialOutStream> outStreamLim(outStreamLimSpec);
outStreamLimSpec->Init(_xml, (size_t)unpackSize);
RINOK(zlibCoder->Code(inStreamLim, outStreamLim, NULL, NULL, NULL));
if (outStreamLimSpec->GetPos() != (size_t)unpackSize)
return S_FALSE;
_xml[(size_t)unpackSize] = 0;
if (strlen((const char *)(const Byte *)_xml) != unpackSize) return S_FALSE;
CXml xml;
if (!xml.Parse((const char *)(const Byte *)_xml))
return S_FALSE;
if (!xml.Root.IsTagged("xar") || xml.Root.SubItems.Size() != 1)
return S_FALSE;
const CXmlItem &toc = xml.Root.SubItems[0];
if (!toc.IsTagged("toc"))
return S_FALSE;
if (!AddItem(toc, _files, -1))
return S_FALSE;
UInt64 totalPackSize = 0;
unsigned numMainFiles = 0;
FOR_VECTOR (i, _files)
{
const CFile &file = _files[i];
file.UpdateTotalPackSize(totalPackSize);
if (file.Name == "Payload" || file.Name == "Content")
{
_mainSubfile = i;
numMainFiles++;
}
else if (file.Name == "PackageInfo")
_is_pkg = true;
}
if (numMainFiles > 1)
_mainSubfile = -1;
_phySize = _dataStartPos + totalPackSize;
return S_OK;
}
