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// HashCalc.h
#ifndef __HASH_CALC_H
#define __HASH_CALC_H
#include "../../../Common/UTFConvert.h"
#include "../../../Common/Wildcard.h"
#include "../../Common/CreateCoder.h"
#include "../../Common/MethodProps.h"
#include "DirItem.h"
#include "IFileExtractCallback.h"
const unsigned k_HashCalc_DigestSize_Max = 64;
const unsigned k_HashCalc_ExtraSize = 8;
const unsigned k_HashCalc_NumGroups = 4;
/*
if (size <= 8) : upper case : reversed byte order : it shows 32-bit/64-bit number, if data contains little-endian number
if (size > 8) : lower case : original byte order (as big-endian byte sequence)
*/
void HashHexToString(char *dest, const Byte *data, UInt32 size);
enum
{
k_HashCalc_Index_Current,
k_HashCalc_Index_DataSum,
k_HashCalc_Index_NamesSum,
k_HashCalc_Index_StreamsSum
};
struct CHasherState
{
CMyComPtr<IHasher> Hasher;
AString Name;
UInt32 DigestSize;
UInt64 NumSums[k_HashCalc_NumGroups];
Byte Digests[k_HashCalc_NumGroups][k_HashCalc_DigestSize_Max + k_HashCalc_ExtraSize];
void InitDigestGroup(unsigned groupIndex)
{
NumSums[groupIndex] = 0;
memset(Digests[groupIndex], 0, sizeof(Digests[groupIndex]));
}
const Byte *GetExtraData_for_Group(unsigned groupIndex) const
{
return Digests[groupIndex] + k_HashCalc_DigestSize_Max;
}
unsigned GetNumExtraBytes_for_Group(unsigned groupIndex) const
{
const Byte *p = GetExtraData_for_Group(groupIndex);
// we use little-endian to read extra bytes
for (unsigned i = k_HashCalc_ExtraSize; i != 0; i--)
if (p[i - 1] != 0)
return i;
return 0;
}
void AddDigest(unsigned groupIndex, const Byte *data);
void WriteToString(unsigned digestIndex, char *s) const;
};
struct IHashCalc
{
virtual void InitForNewFile() = 0;
virtual void Update(const void *data, UInt32 size) = 0;
virtual void SetSize(UInt64 size) = 0;
virtual void Final(bool isDir, bool isAltStream, const UString &path) = 0;
};
struct CHashBundle: public IHashCalc
{
CObjectVector<CHasherState> Hashers;
UInt64 NumDirs;
UInt64 NumFiles;
UInt64 NumAltStreams;
UInt64 FilesSize;
UInt64 AltStreamsSize;
UInt64 NumErrors;
UInt64 CurSize;
UString MainName;
UString FirstFileName;
HRESULT SetMethods(DECL_EXTERNAL_CODECS_LOC_VARS const UStringVector &methods);
// void Init() {}
CHashBundle()
{
NumDirs = NumFiles = NumAltStreams = FilesSize = AltStreamsSize = NumErrors = 0;
}
virtual ~CHashBundle() {};
void InitForNewFile();
void Update(const void *data, UInt32 size);
void SetSize(UInt64 size);
void Final(bool isDir, bool isAltStream, const UString &path);
};
#define INTERFACE_IHashCallbackUI(x) \
INTERFACE_IDirItemsCallback(x) \
virtual HRESULT StartScanning() x; \
virtual HRESULT FinishScanning(const CDirItemsStat &st) x; \
virtual HRESULT SetNumFiles(UInt64 numFiles) x; \
virtual HRESULT SetTotal(UInt64 size) x; \
virtual HRESULT SetCompleted(const UInt64 *completeValue) x; \
virtual HRESULT CheckBreak() x; \
virtual HRESULT BeforeFirstFile(const CHashBundle &hb) x; \
virtual HRESULT GetStream(const wchar_t *name, bool isFolder) x; \
virtual HRESULT OpenFileError(const FString &path, DWORD systemError) x; \
virtual HRESULT SetOperationResult(UInt64 fileSize, const CHashBundle &hb, bool showHash) x; \
virtual HRESULT AfterLastFile(CHashBundle &hb) x; \
struct IHashCallbackUI: public IDirItemsCallback
{
INTERFACE_IHashCallbackUI(=0)
};
struct CHashOptionsLocal
{
CBoolPair HashMode_Zero;
CBoolPair HashMode_Tag;
CBoolPair HashMode_Dirs;
CBoolPair HashMode_OnlyHash;
void Init_HashOptionsLocal()
{
HashMode_Zero.Init();
HashMode_Tag.Init();
HashMode_Dirs.Init();
HashMode_OnlyHash.Init();
// HashMode_Dirs = true; // for debug
}
CHashOptionsLocal()
{
Init_HashOptionsLocal();
}
bool ParseFlagCharOption(wchar_t c, bool val)
{
c = MyCharLower_Ascii(c);
if (c == 'z') HashMode_Zero.SetVal_as_Defined(val);
else if (c == 't') HashMode_Tag.SetVal_as_Defined(val);
else if (c == 'd') HashMode_Dirs.SetVal_as_Defined(val);
else if (c == 'h') HashMode_OnlyHash.SetVal_as_Defined(val);
else return false;
return true;
}
bool ParseString(const UString &s)
{
for (unsigned i = 0; i < s.Len();)
{
const wchar_t c = s[i++];
bool val = true;
if (i < s.Len())
{
const wchar_t next = s[i];
if (next == '-')
{
val = false;
i++;
}
}
if (!ParseFlagCharOption(c, val))
return false;
}
return true;
}
};
struct CHashOptions
// : public CHashOptionsLocal
{
UStringVector Methods;
// UString HashFilePath;
bool PreserveATime;
bool OpenShareForWrite;
bool StdInMode;
bool AltStreamsMode;
CBoolPair SymLinks;
NWildcard::ECensorPathMode PathMode;
CHashOptions():
PreserveATime(false),
OpenShareForWrite(false),
StdInMode(false),
AltStreamsMode(false),
PathMode(NWildcard::k_RelatPath) {};
};
HRESULT HashCalc(
DECL_EXTERNAL_CODECS_LOC_VARS
const NWildcard::CCensor &censor,
const CHashOptions &options,
AString &errorInfo,
IHashCallbackUI *callback);
#ifndef _SFX
namespace NHash {
struct CHashPair
{
CByteBuffer Hash;
char Mode;
bool IsBSD;
bool Size_from_Arc_Defined;
bool Size_from_Disk_Defined;
AString Method;
AString Name;
AString FullLine;
AString HashString;
// unsigned HashLengthInBits;
// AString MethodName;
UInt64 Size_from_Arc;
UInt64 Size_from_Disk;
bool IsDir() const;
void Get_UString_Path(UString &path) const
{
path.Empty();
if (!ConvertUTF8ToUnicode(Name, path))
return;
}
bool ParseCksum(const char *s);
bool Parse(const char *s);
bool IsSupportedMode() const
{
return Mode != 'U' && Mode != '^';
}
CHashPair():
Mode(0)
, IsBSD(false)
, Size_from_Arc_Defined(false)
, Size_from_Disk_Defined(false)
// , HashLengthInBits(0)
, Size_from_Arc(0)
, Size_from_Disk(0)
{}
};
class CHandler:
public IInArchive,
public IArchiveGetRawProps,
// public IGetArchiveHashHandler,
public IOutArchive,
public ISetProperties,
public CMyUnknownImp
{
bool _isArc;
UInt64 _phySize;
CObjectVector<CHashPair> HashPairs;
UString _nameExtenstion;
// UString _method_fromName;
AString _pgpMethod;
bool _is_CksumMode;
bool _is_PgpMethod;
bool _is_ZeroMode;
bool _are_there_Tags;
bool _are_there_Dirs;
bool _hashSize_Defined;
unsigned _hashSize;
bool _crcSize_WasSet;
UInt32 _crcSize;
UStringVector _methods;
void ClearVars();
void InitProps()
{
_crcSize_WasSet = false;
_crcSize = 4;
_methods.Clear();
_options.Init_HashOptionsLocal();
}
CHashOptionsLocal _options;
bool CanUpdate() const
{
if (!_isArc || _is_PgpMethod || _is_CksumMode)
return false;
return true;
}
HRESULT SetProperty(const wchar_t *nameSpec, const PROPVARIANT &value);
public:
CHandler();
MY_UNKNOWN_IMP4(
IInArchive,
IArchiveGetRawProps,
IOutArchive,
ISetProperties
/*, IGetArchiveHashHandler */
)
INTERFACE_IInArchive(;)
INTERFACE_IOutArchive(;)
INTERFACE_IArchiveGetRawProps(;)
// STDMETHOD(GetArchiveHashHandler)(CHandler **handler);
STDMETHOD(SetProperties)(const wchar_t * const *names, const PROPVARIANT *values, UInt32 numProps);
};
}
void Codecs_AddHashArcHandler(CCodecs *codecs);
#endif
#endif
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