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aa5ba75da0fe7e93a747432ecebe2cb3417446d1
easy7zip/CPP/7zip/Archive/Zip/ZipHandler.cpp
Tino Reichardt aa5ba75da0 Update to 7-Zip 17.00 Beta
2017-04-30 14:14:14 +02:00

1343 lines
35 KiB
C++
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// ZipHandler.cpp
#include "StdAfx.h"
#include "../../../Common/ComTry.h"
#include "../../../Common/StringConvert.h"
#include "../../../Windows/PropVariant.h"
#include "../../../Windows/PropVariantUtils.h"
#include "../../../Windows/TimeUtils.h"
#include "../../IPassword.h"
#include "../../Common/FilterCoder.h"
#include "../../Common/LimitedStreams.h"
#include "../../Common/ProgressUtils.h"
#include "../../Common/StreamObjects.h"
#include "../../Common/StreamUtils.h"
#include "../../Compress/CopyCoder.h"
#include "../../Compress/LzmaDecoder.h"
#include "../../Compress/ImplodeDecoder.h"
#include "../../Compress/PpmdZip.h"
#include "../../Compress/ShrinkDecoder.h"
#include "../../Compress/XzDecoder.h"
#include "../../Crypto/WzAes.h"
#include "../../Crypto/ZipCrypto.h"
#include "../../Crypto/ZipStrong.h"
#include "../Common/ItemNameUtils.h"
#include "../Common/OutStreamWithCRC.h"
#include "ZipHandler.h"
using namespace NWindows;
namespace NArchive {
namespace NZip {
static const char * const kHostOS[] =
{
"FAT"
, "AMIGA"
, "VMS"
, "Unix"
, "VM/CMS"
, "Atari"
, "HPFS"
, "Macintosh"
, "Z-System"
, "CP/M"
, "TOPS-20"
, "NTFS"
, "SMS/QDOS"
, "Acorn"
, "VFAT"
, "MVS"
, "BeOS"
, "Tandem"
, "OS/400"
, "OS/X"
};
const char * const kMethodNames1[kNumMethodNames1] =
{
"Store"
, "Shrink"
, "Reduce1"
, "Reduce2"
, "Reduce3"
, "Reduce4"
, "Implode"
, NULL // "Tokenize"
, "Deflate"
, "Deflate64"
, "PKImploding"
, NULL
, "BZip2"
, NULL
, "LZMA"
};
const char * const kMethodNames2[kNumMethodNames2] =
{
"xz"
, "Jpeg"
, "WavPack"
, "PPMd"
, "WzAES"
};
#define kMethod_AES "AES"
#define kMethod_ZipCrypto "ZipCrypto"
#define kMethod_StrongCrypto "StrongCrypto"
static const char * const kDeflateLevels[4] =
{
"Normal"
, "Maximum"
, "Fast"
, "Fastest"
};
static const CUInt32PCharPair g_HeaderCharacts[] =
{
{ 0, "Encrypt" },
{ 3, "Descriptor" },
// { 5, "Patched" },
{ 6, kMethod_StrongCrypto },
{ 11, "UTF8" }
};
struct CIdToNamePair
{
unsigned Id;
const char *Name;
};
static const CIdToNamePair k_StrongCryptoPairs[] =
{
{ NStrongCrypto_AlgId::kDES, "DES" },
{ NStrongCrypto_AlgId::kRC2old, "RC2a" },
{ NStrongCrypto_AlgId::k3DES168, "3DES-168" },
{ NStrongCrypto_AlgId::k3DES112, "3DES-112" },
{ NStrongCrypto_AlgId::kAES128, "pkAES-128" },
{ NStrongCrypto_AlgId::kAES192, "pkAES-192" },
{ NStrongCrypto_AlgId::kAES256, "pkAES-256" },
{ NStrongCrypto_AlgId::kRC2, "RC2" },
{ NStrongCrypto_AlgId::kBlowfish, "Blowfish" },
{ NStrongCrypto_AlgId::kTwofish, "Twofish" },
{ NStrongCrypto_AlgId::kRC4, "RC4" }
};
static const char *FindNameForId(const CIdToNamePair *pairs, unsigned num, unsigned id)
{
for (unsigned i = 0; i < num; i++)
{
const CIdToNamePair &pair = pairs[i];
if (id == pair.Id)
return pair.Name;
}
return NULL;
}
static const Byte kProps[] =
{
kpidPath,
kpidIsDir,
kpidSize,
kpidPackSize,
kpidMTime,
kpidCTime,
kpidATime,
kpidAttrib,
// kpidPosixAttrib,
kpidEncrypted,
kpidComment,
kpidCRC,
kpidMethod,
kpidCharacts,
kpidHostOS,
kpidUnpackVer,
kpidVolumeIndex,
kpidOffset
};
static const Byte kArcProps[] =
{
kpidEmbeddedStubSize,
kpidBit64,
kpidComment,
kpidCharacts,
kpidTotalPhySize,
kpidIsVolume,
kpidVolumeIndex,
kpidNumVolumes
};
CHandler::CHandler()
{
InitMethodProps();
}
static AString BytesToString(const CByteBuffer &data)
{
AString s;
s.SetFrom_CalcLen((const char *)(const Byte *)data, (unsigned)data.Size());
return s;
}
IMP_IInArchive_Props
IMP_IInArchive_ArcProps
STDMETHODIMP CHandler::GetArchiveProperty(PROPID propID, PROPVARIANT *value)
{
COM_TRY_BEGIN
NWindows::NCOM::CPropVariant prop;
switch (propID)
{
case kpidBit64: if (m_Archive.IsZip64) prop = m_Archive.IsZip64; break;
case kpidComment: if (m_Archive.ArcInfo.Comment.Size() != 0) prop = MultiByteToUnicodeString(BytesToString(m_Archive.ArcInfo.Comment), CP_ACP); break;
case kpidPhySize: prop = m_Archive.GetPhySize(); break;
case kpidOffset: prop = m_Archive.GetOffset(); break;
case kpidEmbeddedStubSize:
{
UInt64 stubSize = m_Archive.GetEmbeddedStubSize();
if (stubSize != 0)
prop = stubSize;
break;
}
case kpidTotalPhySize: if (m_Archive.IsMultiVol) prop = m_Archive.Vols.TotalBytesSize; break;
case kpidVolumeIndex: if (m_Archive.IsMultiVol) prop = (UInt32)m_Archive.Vols.StartVolIndex; break;
case kpidIsVolume: if (m_Archive.IsMultiVol) prop = true; break;
case kpidNumVolumes: if (m_Archive.IsMultiVol) prop = (UInt32)m_Archive.Vols.Streams.Size(); break;
case kpidCharacts:
{
AString s;
if (m_Archive.LocalsWereRead)
{
s.Add_OptSpaced("Local");
if (m_Archive.LocalsCenterMerged)
s.Add_OptSpaced("Central");
}
if (m_Archive.IsZip64)
s.Add_OptSpaced("Zip64");
if (m_Archive.ExtraMinorError)
s.Add_OptSpaced("Minor_Extra_ERROR");
if (!s.IsEmpty())
prop = s;
break;
}
case kpidWarningFlags:
{
UInt32 v = 0;
// if (m_Archive.ExtraMinorError) v |= kpv_ErrorFlags_HeadersError;
if (m_Archive.HeadersWarning) v |= kpv_ErrorFlags_HeadersError;
if (v != 0)
prop = v;
break;
}
case kpidWarning:
{
AString s;
if (m_Archive.Overflow32bit)
s.Add_OptSpaced("32-bit overflow in headers");
if (m_Archive.Cd_NumEntries_Overflow_16bit)
s.Add_OptSpaced("16-bit overflow for number of files in headers");
if (!s.IsEmpty())
prop = s;
break;
}
case kpidError:
{
if (!m_Archive.Vols.MissingName.IsEmpty())
{
UString s("Missing volume : ");
s += m_Archive.Vols.MissingName;
prop = s;
}
break;
}
case kpidErrorFlags:
{
UInt32 v = 0;
if (!m_Archive.IsArc) v |= kpv_ErrorFlags_IsNotArc;
if (m_Archive.HeadersError) v |= kpv_ErrorFlags_HeadersError;
if (m_Archive.UnexpectedEnd) v |= kpv_ErrorFlags_UnexpectedEnd;
if (m_Archive.ArcInfo.Base < 0)
{
/* We try to support case when we have sfx-zip with embedded stub,
but the stream has access only to zip part.
In that case we ignore UnavailableStart error.
maybe we must show warning in that case. */
UInt64 stubSize = m_Archive.GetEmbeddedStubSize();
if (stubSize < (UInt64)-m_Archive.ArcInfo.Base)
v |= kpv_ErrorFlags_UnavailableStart;
}
if (m_Archive.NoCentralDir) v |= kpv_ErrorFlags_UnconfirmedStart;
prop = v;
break;
}
case kpidReadOnly:
{
if (m_Archive.IsOpen())
if (!m_Archive.CanUpdate())
prop = true;
break;
}
}
prop.Detach(value);
COM_TRY_END
return S_OK;
}
STDMETHODIMP CHandler::GetNumberOfItems(UInt32 *numItems)
{
*numItems = m_Items.Size();
return S_OK;
}
STDMETHODIMP CHandler::GetProperty(UInt32 index, PROPID propID, PROPVARIANT *value)
{
COM_TRY_BEGIN
NWindows::NCOM::CPropVariant prop;
const CItemEx &item = m_Items[index];
const CExtraBlock &extra = item.GetMainExtra();
switch (propID)
{
case kpidPath:
{
UString res;
item.GetUnicodeString(res, item.Name, false, _forceCodePage, _specifiedCodePage);
NItemName::ReplaceToOsSlashes_Remove_TailSlash(res);
prop = res;
break;
}
case kpidIsDir: prop = item.IsDir(); break;
case kpidSize:
{
if (item.FromCentral || !item.FromLocal || !item.HasDescriptor() || item.DescriptorWasRead)
prop = item.Size;
break;
}
case kpidPackSize: prop = item.PackSize; break;
case kpidTimeType:
{
FILETIME ft;
UInt32 unixTime;
UInt32 type;
if (extra.GetNtfsTime(NFileHeader::NNtfsExtra::kMTime, ft))
type = NFileTimeType::kWindows;
else if (extra.GetUnixTime(true, NFileHeader::NUnixTime::kMTime, unixTime))
type = NFileTimeType::kUnix;
else
type = NFileTimeType::kDOS;
prop = type;
break;
}
case kpidCTime:
{
FILETIME utc;
bool defined = true;
if (!extra.GetNtfsTime(NFileHeader::NNtfsExtra::kCTime, utc))
{
UInt32 unixTime = 0;
if (extra.GetUnixTime(true, NFileHeader::NUnixTime::kCTime, unixTime))
NTime::UnixTimeToFileTime(unixTime, utc);
else
defined = false;
}
if (defined)
prop = utc;
break;
}
case kpidATime:
{
FILETIME utc;
bool defined = true;
if (!extra.GetNtfsTime(NFileHeader::NNtfsExtra::kATime, utc))
{
UInt32 unixTime = 0;
if (extra.GetUnixTime(true, NFileHeader::NUnixTime::kATime, unixTime))
NTime::UnixTimeToFileTime(unixTime, utc);
else
defined = false;
}
if (defined)
prop = utc;
break;
}
case kpidMTime:
{
FILETIME utc;
bool defined = true;
if (!extra.GetNtfsTime(NFileHeader::NNtfsExtra::kMTime, utc))
{
UInt32 unixTime = 0;
if (extra.GetUnixTime(true, NFileHeader::NUnixTime::kMTime, unixTime))
NTime::UnixTimeToFileTime(unixTime, utc);
else
{
FILETIME localFileTime;
if (item.Time == 0)
defined = false;
else if (!NTime::DosTimeToFileTime(item.Time, localFileTime) ||
!LocalFileTimeToFileTime(&localFileTime, &utc))
utc.dwHighDateTime = utc.dwLowDateTime = 0;
}
}
if (defined)
prop = utc;
break;
}
case kpidAttrib: prop = item.GetWinAttrib(); break;
case kpidPosixAttrib:
{
UInt32 attrib;
if (item.GetPosixAttrib(attrib))
prop = attrib;
break;
}
case kpidEncrypted: prop = item.IsEncrypted(); break;
case kpidComment:
{
if (item.Comment.Size() != 0)
{
UString res;
item.GetUnicodeString(res, BytesToString(item.Comment), true, _forceCodePage, _specifiedCodePage);
prop = res;
}
break;
}
case kpidCRC: if (item.IsThereCrc()) prop = item.Crc; break;
case kpidMethod:
{
unsigned id = item.Method;
AString m;
if (item.IsEncrypted())
{
if (id == NFileHeader::NCompressionMethod::kWzAES)
{
m += kMethod_AES;
CWzAesExtra aesField;
if (extra.GetWzAes(aesField))
{
m += '-';
m.Add_UInt32(((unsigned)aesField.Strength + 1) * 64);
id = aesField.Method;
}
}
else if (item.IsStrongEncrypted())
{
CStrongCryptoExtra f;
f.AlgId = 0;
if (extra.GetStrongCrypto(f))
{
const char *s = FindNameForId(k_StrongCryptoPairs, ARRAY_SIZE(k_StrongCryptoPairs), f.AlgId);
if (s)
m += s;
else
{
m += kMethod_StrongCrypto;
m += ':';
m.Add_UInt32(f.AlgId);
}
if (f.CertificateIsUsed())
m += "-Cert";
}
else
m += kMethod_StrongCrypto;
}
else
m += kMethod_ZipCrypto;
m += ' ';
}
{
const char *s = NULL;
if (id < kNumMethodNames1)
s = kMethodNames1[id];
else
{
int id2 = (int)id - (int)kMethodNames2Start;
if (id2 >= 0 && id2 < kNumMethodNames2)
s = kMethodNames2[id2];
}
if (s)
m += s;
else
m.Add_UInt32(id);
}
{
unsigned level = item.GetDeflateLevel();
if (level != 0)
{
if (id == NFileHeader::NCompressionMethod::kLZMA)
{
if (level & 1)
m += ":eos";
level &= ~1;
}
else if (id == NFileHeader::NCompressionMethod::kDeflate)
{
m += ':';
m += kDeflateLevels[level];
level = 0;
}
if (level != 0)
{
m += ":v";
m.Add_UInt32(level);
}
}
}
prop = m;
break;
}
case kpidCharacts:
{
AString s;
if (item.FromLocal)
{
s.Add_OptSpaced("Local");
item.LocalExtra.PrintInfo(s);
if (item.FromCentral)
{
s.Add_OptSpaced(":");
s.Add_OptSpaced("Central");
}
}
if (item.FromCentral)
{
item.CentralExtra.PrintInfo(s);
}
UInt32 flags = item.Flags;
flags &= ~(6); // we don't need compression related bits here.
if (flags != 0)
{
AString s2 = FlagsToString(g_HeaderCharacts, ARRAY_SIZE(g_HeaderCharacts), flags);
if (!s2.IsEmpty())
{
s.Add_OptSpaced(":");
s.Add_OptSpaced(s2);
}
}
if (!item.FromCentral && item.FromLocal && item.HasDescriptor() && !item.DescriptorWasRead)
s.Add_OptSpaced("Descriptor_ERROR");
if (!s.IsEmpty())
prop = s;
break;
}
case kpidHostOS:
{
const Byte hostOS = item.GetHostOS();
TYPE_TO_PROP(kHostOS, hostOS, prop);
break;
}
case kpidUnpackVer:
prop = (UInt32)item.ExtractVersion.Version;
break;
case kpidVolumeIndex:
prop = item.Disk;
break;
case kpidOffset:
prop = item.LocalHeaderPos;
break;
}
prop.Detach(value);
return S_OK;
COM_TRY_END
}
STDMETHODIMP CHandler::Open(IInStream *inStream,
const UInt64 *maxCheckStartPosition, IArchiveOpenCallback *callback)
{
COM_TRY_BEGIN
try
{
Close();
HRESULT res = m_Archive.Open(inStream, maxCheckStartPosition, callback, m_Items);
if (res != S_OK)
{
m_Items.Clear();
m_Archive.ClearRefs(); // we don't want to clear error flags
}
return res;
}
catch(...) { Close(); throw; }
COM_TRY_END
}
STDMETHODIMP CHandler::Close()
{
m_Items.Clear();
m_Archive.Close();
return S_OK;
}
class CLzmaDecoder:
public ICompressCoder,
public ICompressSetFinishMode,
public ICompressGetInStreamProcessedSize,
public CMyUnknownImp
{
public:
NCompress::NLzma::CDecoder *DecoderSpec;
CMyComPtr<ICompressCoder> Decoder;
MY_UNKNOWN_IMP2(
ICompressSetFinishMode,
ICompressGetInStreamProcessedSize)
STDMETHOD(Code)(ISequentialInStream *inStream, ISequentialOutStream *outStream,
const UInt64 *inSize, const UInt64 *outSize, ICompressProgressInfo *progress);
STDMETHOD(SetFinishMode)(UInt32 finishMode);
STDMETHOD(GetInStreamProcessedSize)(UInt64 *value);
CLzmaDecoder();
};
CLzmaDecoder::CLzmaDecoder()
{
DecoderSpec = new NCompress::NLzma::CDecoder;
Decoder = DecoderSpec;
}
static const unsigned kZipLzmaPropsSize = 4 + LZMA_PROPS_SIZE;
HRESULT CLzmaDecoder::Code(ISequentialInStream *inStream, ISequentialOutStream *outStream,
const UInt64 *inSize, const UInt64 *outSize, ICompressProgressInfo *progress)
{
Byte buf[kZipLzmaPropsSize];
RINOK(ReadStream_FALSE(inStream, buf, kZipLzmaPropsSize));
if (buf[2] != LZMA_PROPS_SIZE || buf[3] != 0)
return E_NOTIMPL;
RINOK(DecoderSpec->SetDecoderProperties2(buf + 4, LZMA_PROPS_SIZE));
UInt64 inSize2 = 0;
if (inSize)
{
inSize2 = *inSize;
if (inSize2 < kZipLzmaPropsSize)
return S_FALSE;
inSize2 -= kZipLzmaPropsSize;
}
return Decoder->Code(inStream, outStream, inSize ? &inSize2 : NULL, outSize, progress);
}
STDMETHODIMP CLzmaDecoder::SetFinishMode(UInt32 finishMode)
{
DecoderSpec->FinishStream = (finishMode != 0);
return S_OK;
}
STDMETHODIMP CLzmaDecoder::GetInStreamProcessedSize(UInt64 *value)
{
*value = DecoderSpec->GetInputProcessedSize() + kZipLzmaPropsSize;
return S_OK;
}
struct CMethodItem
{
unsigned ZipMethod;
CMyComPtr<ICompressCoder> Coder;
};
class CZipDecoder
{
NCrypto::NZip::CDecoder *_zipCryptoDecoderSpec;
NCrypto::NZipStrong::CDecoder *_pkAesDecoderSpec;
NCrypto::NWzAes::CDecoder *_wzAesDecoderSpec;
CMyComPtr<ICompressFilter> _zipCryptoDecoder;
CMyComPtr<ICompressFilter> _pkAesDecoder;
CMyComPtr<ICompressFilter> _wzAesDecoder;
CFilterCoder *filterStreamSpec;
CMyComPtr<ISequentialInStream> filterStream;
CMyComPtr<ICryptoGetTextPassword> getTextPassword;
CObjectVector<CMethodItem> methodItems;
CLzmaDecoder *lzmaDecoderSpec;
public:
CZipDecoder():
_zipCryptoDecoderSpec(0),
_pkAesDecoderSpec(0),
_wzAesDecoderSpec(0),
filterStreamSpec(0),
lzmaDecoderSpec(0)
{}
HRESULT Decode(
DECL_EXTERNAL_CODECS_LOC_VARS
CInArchive &archive, const CItemEx &item,
ISequentialOutStream *realOutStream,
IArchiveExtractCallback *extractCallback,
ICompressProgressInfo *compressProgress,
#ifndef _7ZIP_ST
UInt32 numThreads,
#endif
Int32 &res);
};
static HRESULT SkipStreamData(ISequentialInStream *stream, bool &thereAreData)
{
thereAreData = false;
const size_t kBufSize = 1 << 12;
Byte buf[kBufSize];
for (;;)
{
size_t size = kBufSize;
RINOK(ReadStream(stream, buf, &size));
if (size == 0)
return S_OK;
thereAreData = true;
}
}
HRESULT CZipDecoder::Decode(
DECL_EXTERNAL_CODECS_LOC_VARS
CInArchive &archive, const CItemEx &item,
ISequentialOutStream *realOutStream,
IArchiveExtractCallback *extractCallback,
ICompressProgressInfo *compressProgress,
#ifndef _7ZIP_ST
UInt32 numThreads,
#endif
Int32 &res)
{
res = NExtract::NOperationResult::kHeadersError;
CFilterCoder::C_InStream_Releaser inStreamReleaser;
CFilterCoder::C_Filter_Releaser filterReleaser;
bool needCRC = true;
bool wzAesMode = false;
bool pkAesMode = false;
unsigned id = item.Method;
if (item.IsEncrypted())
{
if (item.IsStrongEncrypted())
{
CStrongCryptoExtra f;
if (!item.CentralExtra.GetStrongCrypto(f))
{
res = NExtract::NOperationResult::kUnsupportedMethod;
return S_OK;
}
pkAesMode = true;
}
else if (id == NFileHeader::NCompressionMethod::kWzAES)
{
CWzAesExtra aesField;
if (!item.GetMainExtra().GetWzAes(aesField))
return S_OK;
wzAesMode = true;
needCRC = aesField.NeedCrc();
}
}
COutStreamWithCRC *outStreamSpec = new COutStreamWithCRC;
CMyComPtr<ISequentialOutStream> outStream = outStreamSpec;
outStreamSpec->SetStream(realOutStream);
outStreamSpec->Init(needCRC);
CMyComPtr<ISequentialInStream> packStream;
CLimitedSequentialInStream *limitedStreamSpec = new CLimitedSequentialInStream;
CMyComPtr<ISequentialInStream> inStream(limitedStreamSpec);
{
UInt64 packSize = item.PackSize;
if (wzAesMode)
{
if (packSize < NCrypto::NWzAes::kMacSize)
return S_OK;
packSize -= NCrypto::NWzAes::kMacSize;
}
RINOK(archive.GetItemStream(item, true, packStream));
if (!packStream)
{
res = NExtract::NOperationResult::kUnavailable;
return S_OK;
}
limitedStreamSpec->SetStream(packStream);
limitedStreamSpec->Init(packSize);
}
res = NExtract::NOperationResult::kDataError;
CMyComPtr<ICompressFilter> cryptoFilter;
if (item.IsEncrypted())
{
if (wzAesMode)
{
CWzAesExtra aesField;
if (!item.GetMainExtra().GetWzAes(aesField))
return S_OK;
id = aesField.Method;
if (!_wzAesDecoder)
{
_wzAesDecoderSpec = new NCrypto::NWzAes::CDecoder;
_wzAesDecoder = _wzAesDecoderSpec;
}
cryptoFilter = _wzAesDecoder;
if (!_wzAesDecoderSpec->SetKeyMode(aesField.Strength))
{
res = NExtract::NOperationResult::kUnsupportedMethod;
return S_OK;
}
}
else if (pkAesMode)
{
if (!_pkAesDecoder)
{
_pkAesDecoderSpec = new NCrypto::NZipStrong::CDecoder;
_pkAesDecoder = _pkAesDecoderSpec;
}
cryptoFilter = _pkAesDecoder;
}
else
{
if (!_zipCryptoDecoder)
{
_zipCryptoDecoderSpec = new NCrypto::NZip::CDecoder;
_zipCryptoDecoder = _zipCryptoDecoderSpec;
}
cryptoFilter = _zipCryptoDecoder;
}
CMyComPtr<ICryptoSetPassword> cryptoSetPassword;
RINOK(cryptoFilter.QueryInterface(IID_ICryptoSetPassword, &cryptoSetPassword));
if (!cryptoSetPassword)
return E_FAIL;
if (!getTextPassword)
extractCallback->QueryInterface(IID_ICryptoGetTextPassword, (void **)&getTextPassword);
if (getTextPassword)
{
CMyComBSTR password;
RINOK(getTextPassword->CryptoGetTextPassword(&password));
AString charPassword;
if (password)
{
UnicodeStringToMultiByte2(charPassword, (const wchar_t *)password, CP_ACP);
/*
if (wzAesMode || pkAesMode)
{
}
else
{
// PASSWORD encoding for ZipCrypto:
// pkzip25 / WinZip / Windows probably use ANSI
// 7-Zip < 4.43 creates ZIP archives with OEM encoding in password
// 7-Zip >= 4.43 creates ZIP archives only with ASCII characters in password
// 7-Zip < 17.00 uses CP_OEMCP for password decoding
// 7-Zip >= 17.00 uses CP_ACP for password decoding
}
*/
}
HRESULT result = cryptoSetPassword->CryptoSetPassword(
(const Byte *)(const char *)charPassword, charPassword.Len());
if (result != S_OK)
{
res = NExtract::NOperationResult::kWrongPassword;
return S_OK;
}
}
else
{
res = NExtract::NOperationResult::kWrongPassword;
return S_OK;
// RINOK(cryptoSetPassword->CryptoSetPassword(NULL, 0));
}
}
unsigned m;
for (m = 0; m < methodItems.Size(); m++)
if (methodItems[m].ZipMethod == id)
break;
if (m == methodItems.Size())
{
CMethodItem mi;
mi.ZipMethod = id;
if (id == NFileHeader::NCompressionMethod::kStore)
mi.Coder = new NCompress::CCopyCoder;
else if (id == NFileHeader::NCompressionMethod::kShrink)
mi.Coder = new NCompress::NShrink::CDecoder;
else if (id == NFileHeader::NCompressionMethod::kImplode)
mi.Coder = new NCompress::NImplode::NDecoder::CCoder;
else if (id == NFileHeader::NCompressionMethod::kLZMA)
{
lzmaDecoderSpec = new CLzmaDecoder;
mi.Coder = lzmaDecoderSpec;
}
else if (id == NFileHeader::NCompressionMethod::kXz)
mi.Coder = new NCompress::NXz::CComDecoder;
else if (id == NFileHeader::NCompressionMethod::kPPMd)
mi.Coder = new NCompress::NPpmdZip::CDecoder(true);
else
{
CMethodId szMethodID;
if (id == NFileHeader::NCompressionMethod::kBZip2)
szMethodID = kMethodId_BZip2;
else
{
if (id > 0xFF)
{
res = NExtract::NOperationResult::kUnsupportedMethod;
return S_OK;
}
szMethodID = kMethodId_ZipBase + (Byte)id;
}
RINOK(CreateCoder(EXTERNAL_CODECS_LOC_VARS szMethodID, false, mi.Coder));
if (!mi.Coder)
{
res = NExtract::NOperationResult::kUnsupportedMethod;
return S_OK;
}
}
m = methodItems.Add(mi);
}
ICompressCoder *coder = methodItems[m].Coder;
{
CMyComPtr<ICompressSetDecoderProperties2> setDecoderProperties;
coder->QueryInterface(IID_ICompressSetDecoderProperties2, (void **)&setDecoderProperties);
if (setDecoderProperties)
{
Byte properties = (Byte)item.Flags;
RINOK(setDecoderProperties->SetDecoderProperties2(&properties, 1));
}
}
#ifndef _7ZIP_ST
{
CMyComPtr<ICompressSetCoderMt> setCoderMt;
coder->QueryInterface(IID_ICompressSetCoderMt, (void **)&setCoderMt);
if (setCoderMt)
{
RINOK(setCoderMt->SetNumberOfThreads(numThreads));
}
}
#endif
CMyComPtr<ISequentialInStream> inStreamNew;
bool isFullStreamExpected = (!item.HasDescriptor() || item.PackSize != 0);
bool needReminderCheck = false;
bool dataAfterEnd = false;
bool truncatedError = false;
bool lzmaEosError = false;
{
HRESULT result = S_OK;
if (item.IsEncrypted())
{
if (!filterStream)
{
filterStreamSpec = new CFilterCoder(false);
filterStream = filterStreamSpec;
}
filterReleaser.FilterCoder = filterStreamSpec;
filterStreamSpec->Filter = cryptoFilter;
if (wzAesMode)
{
result = _wzAesDecoderSpec->ReadHeader(inStream);
if (result == S_OK)
{
if (!_wzAesDecoderSpec->Init_and_CheckPassword())
{
res = NExtract::NOperationResult::kWrongPassword;
return S_OK;
}
}
}
else if (pkAesMode)
{
isFullStreamExpected = false;
result =_pkAesDecoderSpec->ReadHeader(inStream, item.Crc, item.Size);
if (result == S_OK)
{
bool passwOK;
result = _pkAesDecoderSpec->Init_and_CheckPassword(passwOK);
if (result == S_OK && !passwOK)
{
res = NExtract::NOperationResult::kWrongPassword;
return S_OK;
}
}
}
else
{
result = _zipCryptoDecoderSpec->ReadHeader(inStream);
if (result == S_OK)
{
_zipCryptoDecoderSpec->Init_BeforeDecode();
/* Info-ZIP modification to ZipCrypto format:
if bit 3 of the general purpose bit flag is set,
it uses high byte of 16-bit File Time.
Info-ZIP code probably writes 2 bytes of File Time.
We check only 1 byte. */
// UInt32 v1 = GetUi16(_zipCryptoDecoderSpec->_header + NCrypto::NZip::kHeaderSize - 2);
// UInt32 v2 = (item.HasDescriptor() ? (item.Time & 0xFFFF) : (item.Crc >> 16));
Byte v1 = _zipCryptoDecoderSpec->_header[NCrypto::NZip::kHeaderSize - 1];
Byte v2 = (Byte)(item.HasDescriptor() ? (item.Time >> 8) : (item.Crc >> 24));
if (v1 != v2)
{
res = NExtract::NOperationResult::kWrongPassword;
return S_OK;
}
}
}
if (result == S_OK)
{
inStreamReleaser.FilterCoder = filterStreamSpec;
RINOK(filterStreamSpec->SetInStream(inStream));
/* IFilter::Init() does nothing in all zip crypto filters.
So we can call any Initialize function in CFilterCoder. */
RINOK(filterStreamSpec->Init_NoSubFilterInit());
// RINOK(filterStreamSpec->SetOutStreamSize(NULL));
inStreamNew = filterStream;
}
}
else
inStreamNew = inStream;
if (result == S_OK)
{
CMyComPtr<ICompressSetFinishMode> setFinishMode;
coder->QueryInterface(IID_ICompressSetFinishMode, (void **)&setFinishMode);
if (setFinishMode)
{
RINOK(setFinishMode->SetFinishMode(BoolToInt(true)));
}
const UInt64 coderPackSize = limitedStreamSpec->GetRem();
bool useUnpackLimit = (id == 0
|| !item.HasDescriptor()
|| item.Size >= ((UInt64)1 << 32)
|| item.LocalExtra.IsZip64
|| item.CentralExtra.IsZip64
);
result = coder->Code(inStreamNew, outStream,
isFullStreamExpected ? &coderPackSize : NULL,
// NULL,
useUnpackLimit ? &item.Size : NULL,
compressProgress);
if (result == S_OK)
{
CMyComPtr<ICompressGetInStreamProcessedSize> getInStreamProcessedSize;
coder->QueryInterface(IID_ICompressGetInStreamProcessedSize, (void **)&getInStreamProcessedSize);
if (getInStreamProcessedSize && setFinishMode)
{
UInt64 processed;
RINOK(getInStreamProcessedSize->GetInStreamProcessedSize(&processed));
if (processed != (UInt64)(Int64)-1)
{
if (pkAesMode)
{
const UInt32 padSize = _pkAesDecoderSpec->GetPadSize((UInt32)processed);
if (processed + padSize > coderPackSize)
truncatedError = true;
else
{
if (processed + padSize < coderPackSize)
dataAfterEnd = true;
// also here we can check PKCS7 padding data from reminder (it can be inside stream buffer in coder).
}
}
else
{
if (processed < coderPackSize)
{
if (isFullStreamExpected)
dataAfterEnd = true;
}
else if (processed > coderPackSize)
truncatedError = true;
needReminderCheck = isFullStreamExpected;
}
}
}
}
if (result == S_OK && id == NFileHeader::NCompressionMethod::kLZMA)
if (!lzmaDecoderSpec->DecoderSpec->CheckFinishStatus(item.IsLzmaEOS()))
lzmaEosError = true;
}
if (result == S_FALSE)
return S_OK;
if (result == E_NOTIMPL)
{
res = NExtract::NOperationResult::kUnsupportedMethod;
return S_OK;
}
RINOK(result);
}
bool crcOK = true;
bool authOk = true;
if (needCRC)
crcOK = (outStreamSpec->GetCRC() == item.Crc);
if (wzAesMode)
{
bool thereAreData = false;
if (SkipStreamData(inStreamNew, thereAreData) != S_OK)
authOk = false;
if (needReminderCheck && thereAreData)
dataAfterEnd = true;
limitedStreamSpec->Init(NCrypto::NWzAes::kMacSize);
if (_wzAesDecoderSpec->CheckMac(inStream, authOk) != S_OK)
authOk = false;
}
res = NExtract::NOperationResult::kCRCError;
if (crcOK && authOk)
{
res = NExtract::NOperationResult::kOK;
if (dataAfterEnd)
res = NExtract::NOperationResult::kDataAfterEnd;
else if (truncatedError)
res = NExtract::NOperationResult::kUnexpectedEnd;
else if (lzmaEosError)
res = NExtract::NOperationResult::kHeadersError;
// CheckDescriptor() supports only data descriptor with signature and
// it doesn't support "old" pkzip's data descriptor without signature.
// So we disable that check.
/*
if (item.HasDescriptor() && archive.CheckDescriptor(item) != S_OK)
res = NExtract::NOperationResult::kHeadersError;
*/
}
return S_OK;
}
STDMETHODIMP CHandler::Extract(const UInt32 *indices, UInt32 numItems,
Int32 testMode, IArchiveExtractCallback *extractCallback)
{
COM_TRY_BEGIN
CZipDecoder myDecoder;
UInt64 totalUnPacked = 0, totalPacked = 0;
bool allFilesMode = (numItems == (UInt32)(Int32)-1);
if (allFilesMode)
numItems = m_Items.Size();
if (numItems == 0)
return S_OK;
UInt32 i;
for (i = 0; i < numItems; i++)
{
const CItemEx &item = m_Items[allFilesMode ? i : indices[i]];
totalUnPacked += item.Size;
totalPacked += item.PackSize;
}
RINOK(extractCallback->SetTotal(totalUnPacked));
UInt64 currentTotalUnPacked = 0, currentTotalPacked = 0;
UInt64 currentItemUnPacked, currentItemPacked;
CLocalProgress *lps = new CLocalProgress;
CMyComPtr<ICompressProgressInfo> progress = lps;
lps->Init(extractCallback, false);
for (i = 0; i < numItems; i++,
currentTotalUnPacked += currentItemUnPacked,
currentTotalPacked += currentItemPacked)
{
currentItemUnPacked = 0;
currentItemPacked = 0;
lps->InSize = currentTotalPacked;
lps->OutSize = currentTotalUnPacked;
RINOK(lps->SetCur());
CMyComPtr<ISequentialOutStream> realOutStream;
Int32 askMode = testMode ?
NExtract::NAskMode::kTest :
NExtract::NAskMode::kExtract;
UInt32 index = allFilesMode ? i : indices[i];
CItemEx item = m_Items[index];
bool isLocalOffsetOK = m_Archive.IsLocalOffsetOK(item);
bool skip = !isLocalOffsetOK && !item.IsDir();
if (skip)
askMode = NExtract::NAskMode::kSkip;
currentItemUnPacked = item.Size;
currentItemPacked = item.PackSize;
RINOK(extractCallback->GetStream(index, &realOutStream, askMode));
if (!isLocalOffsetOK)
{
RINOK(extractCallback->PrepareOperation(askMode));
realOutStream.Release();
RINOK(extractCallback->SetOperationResult(NExtract::NOperationResult::kUnavailable));
continue;
}
bool headersError = false;
if (!item.FromLocal)
{
bool isAvail = true;
HRESULT res = m_Archive.ReadLocalItemAfterCdItem(item, isAvail, headersError);
if (res == S_FALSE)
{
if (item.IsDir() || realOutStream || testMode)
{
RINOK(extractCallback->PrepareOperation(askMode));
realOutStream.Release();
RINOK(extractCallback->SetOperationResult(
isAvail ?
NExtract::NOperationResult::kHeadersError :
NExtract::NOperationResult::kUnavailable));
}
continue;
}
RINOK(res);
}
if (item.IsDir())
{
// if (!testMode)
{
RINOK(extractCallback->PrepareOperation(askMode));
realOutStream.Release();
RINOK(extractCallback->SetOperationResult(NExtract::NOperationResult::kOK));
}
continue;
}
if (!testMode && !realOutStream)
continue;
RINOK(extractCallback->PrepareOperation(askMode));
Int32 res;
HRESULT hres = myDecoder.Decode(
EXTERNAL_CODECS_VARS
m_Archive, item, realOutStream, extractCallback,
progress,
#ifndef _7ZIP_ST
_props._numThreads,
#endif
res);
RINOK(hres);
realOutStream.Release();
if (res == NExtract::NOperationResult::kOK && headersError)
res = NExtract::NOperationResult::kHeadersError;
RINOK(extractCallback->SetOperationResult(res))
}
lps->InSize = currentTotalPacked;
lps->OutSize = currentTotalUnPacked;
return lps->SetCur();
COM_TRY_END
}
IMPL_ISetCompressCodecsInfo
}}
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