HRESULT CInArchive::Open2(IInStream *stream, const UInt64 *searchHeaderSizeLimit)
{
m_CryptoMode = false;
RINOK(stream->Seek(0, STREAM_SEEK_SET, &m_StreamStartPosition));
m_Position = m_StreamStartPosition;
UInt64 arcStartPos;
RINOK(FindSignatureInStream(stream, NHeader::kMarker, NHeader::kMarkerSize,
searchHeaderSizeLimit, arcStartPos));
m_Position = arcStartPos + NHeader::kMarkerSize;
RINOK(stream->Seek(m_Position, STREAM_SEEK_SET, NULL));
Byte buf[NHeader::NArchive::kArchiveHeaderSize + 1];
RINOK(ReadStream_FALSE(stream, buf, NHeader::NArchive::kArchiveHeaderSize));
AddToSeekValue(NHeader::NArchive::kArchiveHeaderSize);
UInt32 blockSize = Get16(buf + 5);
_header.EncryptVersion = 0;
_header.Flags = Get16(buf + 3);
UInt32 headerSize = NHeader::NArchive::kArchiveHeaderSize;
if (_header.IsThereEncryptVer())
{
if (blockSize <= headerSize)
return S_FALSE;
RINOK(ReadStream_FALSE(stream, buf + NHeader::NArchive::kArchiveHeaderSize, 1));
AddToSeekValue(1);
_header.EncryptVersion = buf[NHeader::NArchive::kArchiveHeaderSize];
headerSize += 1;
}
if (blockSize < headerSize ||
buf[2] != NHeader::NBlockType::kArchiveHeader ||
(UInt32)Get16(buf) != (CrcCalc(buf + 2, headerSize - 2) & 0xFFFF))
return S_FALSE;
size_t commentSize = blockSize - headerSize;
_comment.SetCapacity(commentSize);
RINOK(ReadStream_FALSE(stream, _comment, commentSize));
AddToSeekValue(commentSize);
m_Stream = stream;
_header.StartPosition = arcStartPos;
return S_OK;
}
HRESULT CInArchive::Open2(IInStream *stream,
const UInt64 *searchHeaderSizeLimit,
CDatabase &database)
{
database.Clear();
RINOK(stream->Seek(0, STREAM_SEEK_SET, &database.StartPosition));
RINOK(FindSignatureInStream(stream, NHeader::kMarker, NHeader::kMarkerSize,
searchHeaderSizeLimit, database.StartPosition));
RINOK(stream->Seek(database.StartPosition + NHeader::kMarkerSize, STREAM_SEEK_SET, NULL));
if (!inBuffer.Create(1 << 17))
return E_OUTOFMEMORY;
inBuffer.SetStream(stream);
inBuffer.Init();
CInArchiveInfo &archiveInfo = database.ArchiveInfo;
archiveInfo.Size = ReadUInt32(); // size of this cabinet file in bytes
if (ReadUInt32() != 0)
return S_FALSE;
archiveInfo.FileHeadersOffset = ReadUInt32(); // offset of the first CFFILE entry
if (ReadUInt32() != 0)
return S_FALSE;
archiveInfo.VersionMinor = ReadByte(); // cabinet file format version, minor
archiveInfo.VersionMajor = ReadByte(); // cabinet file format version, major
archiveInfo.NumFolders = ReadUInt16(); // number of CFFOLDER entries in this cabinet
archiveInfo.NumFiles = ReadUInt16(); // number of CFFILE entries in this cabinet
archiveInfo.Flags = ReadUInt16();
if (archiveInfo.Flags > 7)
return S_FALSE;
archiveInfo.SetID = ReadUInt16(); // must be the same for all cabinets in a set
archiveInfo.CabinetNumber = ReadUInt16(); // number of this cabinet file in a set
if (archiveInfo.ReserveBlockPresent())
{
archiveInfo.PerCabinetAreaSize = ReadUInt16(); // (optional) size of per-cabinet reserved area
archiveInfo.PerFolderAreaSize = ReadByte(); // (optional) size of per-folder reserved area
archiveInfo.PerDataBlockAreaSize = ReadByte(); // (optional) size of per-datablock reserved area
Skeep(archiveInfo.PerCabinetAreaSize);
}
{
if (archiveInfo.IsTherePrev())
ReadOtherArchive(archiveInfo.PreviousArchive);
if (archiveInfo.IsThereNext())
ReadOtherArchive(archiveInfo.NextArchive);
}
int i;
for(i = 0; i < archiveInfo.NumFolders; i++)
{
CFolder folder;
folder.DataStart = ReadUInt32();
folder.NumDataBlocks = ReadUInt16();
folder.CompressionTypeMajor = ReadByte();
folder.CompressionTypeMinor = ReadByte();
Skeep(archiveInfo.PerFolderAreaSize);
database.Folders.Add(folder);
}
RINOK(stream->Seek(database.StartPosition + archiveInfo.FileHeadersOffset, STREAM_SEEK_SET, NULL));
inBuffer.SetStream(stream);
inBuffer.Init();
for(i = 0; i < archiveInfo.NumFiles; i++)
{
CItem item;
item.Size = ReadUInt32();
item.Offset = ReadUInt32();
item.FolderIndex = ReadUInt16();
UInt16 pureDate = ReadUInt16();
UInt16 pureTime = ReadUInt16();
item.Time = ((UInt32(pureDate) << 16)) | pureTime;
item.Attributes = ReadUInt16();
item.Name = SafeReadName();
int folderIndex = item.GetFolderIndex(database.Folders.Size());
if (folderIndex >= database.Folders.Size())
return S_FALSE;
database.Items.Add(item);
}
return S_OK;
}
HRESULT CInArchive::Open2(IInStream *stream,
const UInt64 *searchHeaderSizeLimit,
CDatabase &database)
{
database.Clear();
RINOK(stream->Seek(0, STREAM_SEEK_SET, &database.StartPosition));
RINOK(FindSignatureInStream(stream, NHeader::kMarker, NHeader::kMarkerSize,
searchHeaderSizeLimit, database.StartPosition));
RINOK(stream->Seek(database.StartPosition + NHeader::kMarkerSize, STREAM_SEEK_SET, NULL));
if (!inBuffer.Create(1 << 17))
return E_OUTOFMEMORY;
inBuffer.SetStream(stream);
inBuffer.Init();
CInArchiveInfo &ai = database.ArchiveInfo;
ai.Size = ReadUInt32();
if (ReadUInt32() != 0)
return S_FALSE;
ai.FileHeadersOffset = ReadUInt32();
if (ReadUInt32() != 0)
return S_FALSE;
ai.VersionMinor = ReadByte();
ai.VersionMajor = ReadByte();
ai.NumFolders = ReadUInt16();
ai.NumFiles = ReadUInt16();
ai.Flags = ReadUInt16();
if (ai.Flags > 7)
return S_FALSE;
ai.SetID = ReadUInt16();
ai.CabinetNumber = ReadUInt16();
if (ai.ReserveBlockPresent())
{
ai.PerCabinetAreaSize = ReadUInt16();
ai.PerFolderAreaSize = ReadByte();
ai.PerDataBlockAreaSize = ReadByte();
Skip(ai.PerCabinetAreaSize);
}
{
if (ai.IsTherePrev())
ReadOtherArchive(ai.PreviousArchive);
if (ai.IsThereNext())
ReadOtherArchive(ai.NextArchive);
}
int i;
for (i = 0; i < ai.NumFolders; i++)
{
CFolder folder;
folder.DataStart = ReadUInt32();
folder.NumDataBlocks = ReadUInt16();
folder.CompressionTypeMajor = ReadByte();
folder.CompressionTypeMinor = ReadByte();
Skip(ai.PerFolderAreaSize);
database.Folders.Add(folder);
}
RINOK(stream->Seek(database.StartPosition + ai.FileHeadersOffset, STREAM_SEEK_SET, NULL));
inBuffer.SetStream(stream);
inBuffer.Init();
for (i = 0; i < ai.NumFiles; i++)
{
CItem item;
item.Size = ReadUInt32();
item.Offset = ReadUInt32();
item.FolderIndex = ReadUInt16();
UInt16 pureDate = ReadUInt16();
UInt16 pureTime = ReadUInt16();
item.Time = ((UInt32(pureDate) << 16)) | pureTime;
item.Attributes = ReadUInt16();
item.Name = SafeReadName();
int folderIndex = item.GetFolderIndex(database.Folders.Size());
if (folderIndex >= database.Folders.Size())
return S_FALSE;
database.Items.Add(item);
}
return S_OK;
}
