789 lines
18 KiB
C++
789 lines
18 KiB
C++
// LzhHandler.cpp
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#include "StdAfx.h"
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#include "../../../C/CpuArch.h"
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#include "../../Common/ComTry.h"
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#include "../../Common/MyBuffer.h"
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#include "../../Common/StringConvert.h"
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#include "../../Windows/PropVariant.h"
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#include "../../Windows/TimeUtils.h"
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#include "../ICoder.h"
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#include "../Common/LimitedStreams.h"
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#include "../Common/ProgressUtils.h"
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#include "../Common/RegisterArc.h"
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#include "../Common/StreamUtils.h"
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#include "../Compress/CopyCoder.h"
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#include "../Compress/LzhDecoder.h"
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#include "IArchive.h"
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#include "Common/ItemNameUtils.h"
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using namespace NWindows;
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using namespace NTime;
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#define Get16(p) GetUi16(p)
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#define Get32(p) GetUi32(p)
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namespace NArchive {
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namespace NLzh{
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const int kMethodIdSize = 5;
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const Byte kExtIdFileName = 0x01;
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const Byte kExtIdDirName = 0x02;
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const Byte kExtIdUnixTime = 0x54;
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struct CExtension
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{
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Byte Type;
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CByteBuffer Data;
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AString GetString() const
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{
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AString s;
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for (size_t i = 0; i < Data.Size(); i++)
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{
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char c = (char)Data[i];
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if (c == 0)
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break;
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s += c;
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}
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return s;
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}
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};
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const UInt32 kBasicPartSize = 22;
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API_FUNC_static_IsArc IsArc_Lzh(const Byte *p, size_t size)
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{
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if (size < 2 + kBasicPartSize)
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return k_IsArc_Res_NEED_MORE;
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if (p[2] != '-' || p[3] != 'l' || p[4] != 'h' || p[6] != '-')
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return k_IsArc_Res_NO;
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Byte n = p[5];
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if (n != 'd')
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if (n < '0' || n > '7')
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return k_IsArc_Res_NO;
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return k_IsArc_Res_YES;
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}
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}
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struct CItem
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{
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AString Name;
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Byte Method[kMethodIdSize];
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Byte Attributes;
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Byte Level;
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Byte OsId;
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UInt32 PackSize;
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UInt32 Size;
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UInt32 ModifiedTime;
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UInt16 CRC;
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CObjectVector<CExtension> Extensions;
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bool IsValidMethod() const { return (Method[0] == '-' && Method[1] == 'l' && Method[4] == '-'); }
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bool IsLhMethod() const {return (IsValidMethod() && Method[2] == 'h'); }
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bool IsDir() const {return (IsLhMethod() && Method[3] == 'd'); }
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bool IsCopyMethod() const
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{
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return (IsLhMethod() && Method[3] == '0') ||
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(IsValidMethod() && Method[2] == 'z' && Method[3] == '4');
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}
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bool IsLh1GroupMethod() const
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{
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if (!IsLhMethod())
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return false;
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switch (Method[3])
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{
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case '1':
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return true;
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}
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return false;
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}
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bool IsLh4GroupMethod() const
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{
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if (!IsLhMethod())
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return false;
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switch (Method[3])
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{
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case '4':
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case '5':
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case '6':
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case '7':
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return true;
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}
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return false;
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}
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int GetNumDictBits() const
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{
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if (!IsLhMethod())
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return 0;
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switch (Method[3])
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{
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case '1': return 12;
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case '2': return 13;
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case '3': return 13;
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case '4': return 12;
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case '5': return 13;
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case '6': return 15;
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case '7': return 16;
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}
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return 0;
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}
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int FindExt(Byte type) const
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{
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FOR_VECTOR (i, Extensions)
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if (Extensions[i].Type == type)
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return i;
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return -1;
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}
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bool GetUnixTime(UInt32 &value) const
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{
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value = 0;
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int index = FindExt(kExtIdUnixTime);
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if (index < 0)
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{
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if (Level == 2)
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{
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value = ModifiedTime;
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return true;
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}
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return false;
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}
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const Byte *data = (const Byte *)(Extensions[index].Data);
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value = GetUi32(data);
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return true;
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}
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AString GetDirName() const
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{
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int index = FindExt(kExtIdDirName);
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if (index < 0)
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return AString();
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return Extensions[index].GetString();
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}
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AString GetFileName() const
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{
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int index = FindExt(kExtIdFileName);
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if (index < 0)
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return Name;
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return Extensions[index].GetString();
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}
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AString GetName() const
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{
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AString dirName = GetDirName();
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const char kDirSeparator = CHAR_PATH_SEPARATOR; // '\\';
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// check kDirSeparator in Linux
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dirName.Replace((char)(unsigned char)0xFF, kDirSeparator);
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if (!dirName.IsEmpty() && dirName.Back() != kDirSeparator)
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dirName += kDirSeparator;
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return dirName + GetFileName();
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}
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};
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static const Byte *ReadUInt16(const Byte *p, UInt16 &v)
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{
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v = Get16(p);
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return p + 2;
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}
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static const Byte *ReadString(const Byte *p, size_t size, AString &s)
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{
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s.Empty();
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for (size_t i = 0; i < size; i++)
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{
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char c = p[i];
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if (c == 0)
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break;
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s += c;
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}
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return p + size;
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}
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static Byte CalcSum(const Byte *data, size_t size)
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{
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Byte sum = 0;
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for (size_t i = 0; i < size; i++)
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sum = (Byte)(sum + data[i]);
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return sum;
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}
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static HRESULT GetNextItem(ISequentialInStream *stream, bool &filled, CItem &item)
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{
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filled = false;
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size_t processedSize = 2;
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Byte startHeader[2];
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RINOK(ReadStream(stream, startHeader, &processedSize))
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if (processedSize == 0)
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return S_OK;
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if (processedSize == 1)
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return (startHeader[0] == 0) ? S_OK: S_FALSE;
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if (startHeader[0] == 0 && startHeader[1] == 0)
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return S_OK;
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Byte header[256];
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processedSize = kBasicPartSize;
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RINOK(ReadStream(stream, header, &processedSize));
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if (processedSize != kBasicPartSize)
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return (startHeader[0] == 0) ? S_OK: S_FALSE;
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const Byte *p = header;
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memcpy(item.Method, p, kMethodIdSize);
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if (!item.IsValidMethod())
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return S_OK;
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p += kMethodIdSize;
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item.PackSize = Get32(p);
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item.Size = Get32(p + 4);
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item.ModifiedTime = Get32(p + 8);
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item.Attributes = p[12];
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item.Level = p[13];
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p += 14;
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if (item.Level > 2)
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return S_FALSE;
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UInt32 headerSize;
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if (item.Level < 2)
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{
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headerSize = startHeader[0];
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if (headerSize < kBasicPartSize)
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return S_FALSE;
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RINOK(ReadStream_FALSE(stream, header + kBasicPartSize, headerSize - kBasicPartSize));
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if (startHeader[1] != CalcSum(header, headerSize))
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return S_FALSE;
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size_t nameLength = *p++;
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if ((p - header) + nameLength + 2 > headerSize)
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return S_FALSE;
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p = ReadString(p, nameLength, item.Name);
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}
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else
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headerSize = startHeader[0] | ((UInt32)startHeader[1] << 8);
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p = ReadUInt16(p, item.CRC);
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if (item.Level != 0)
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{
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if (item.Level == 2)
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{
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RINOK(ReadStream_FALSE(stream, header + kBasicPartSize, 2));
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}
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if ((size_t)(p - header) + 3 > headerSize)
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return S_FALSE;
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item.OsId = *p++;
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UInt16 nextSize;
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p = ReadUInt16(p, nextSize);
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while (nextSize != 0)
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{
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if (nextSize < 3)
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return S_FALSE;
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if (item.Level == 1)
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{
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if (item.PackSize < nextSize)
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return S_FALSE;
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item.PackSize -= nextSize;
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}
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if (item.Extensions.Size() >= (1 << 8))
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return S_FALSE;
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CExtension ext;
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RINOK(ReadStream_FALSE(stream, &ext.Type, 1))
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nextSize -= 3;
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ext.Data.Alloc(nextSize);
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RINOK(ReadStream_FALSE(stream, (Byte *)ext.Data, nextSize))
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item.Extensions.Add(ext);
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Byte hdr2[2];
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RINOK(ReadStream_FALSE(stream, hdr2, 2));
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ReadUInt16(hdr2, nextSize);
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}
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}
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filled = true;
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return S_OK;
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}
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struct COsPair
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{
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Byte Id;
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const char *Name;
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};
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static const COsPair g_OsPairs[] =
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{
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{ 0, "MS-DOS" },
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{ 'M', "MS-DOS" },
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{ '2', "OS/2" },
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{ '9', "OS9" },
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{ 'K', "OS/68K" },
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{ '3', "OS/386" },
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{ 'H', "HUMAN" },
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{ 'U', "UNIX" },
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{ 'C', "CP/M" },
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{ 'F', "FLEX" },
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{ 'm', "Mac" },
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{ 'R', "Runser" },
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{ 'T', "TownsOS" },
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{ 'X', "XOSK" },
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{ 'w', "Windows 95" },
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{ 'W', "Windows NT" },
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{ 'J', "Java VM" }
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};
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static const char *kUnknownOS = "Unknown";
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static const char *GetOS(Byte osId)
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{
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for (unsigned i = 0; i < ARRAY_SIZE(g_OsPairs); i++)
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if (g_OsPairs[i].Id == osId)
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return g_OsPairs[i].Name;
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return kUnknownOS;
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}
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static const Byte kProps[] =
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{
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kpidPath,
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kpidIsDir,
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kpidSize,
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kpidPackSize,
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kpidMTime,
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// kpidAttrib,
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kpidCRC,
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kpidMethod,
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kpidHostOS
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};
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class CCRC
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{
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UInt16 _value;
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public:
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static UInt16 Table[256];
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static void InitTable();
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CCRC(): _value(0) {}
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void Init() { _value = 0; }
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void Update(const void *data, size_t size);
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UInt16 GetDigest() const { return _value; }
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};
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static const UInt16 kCRCPoly = 0xA001;
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UInt16 CCRC::Table[256];
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void CCRC::InitTable()
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{
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for (UInt32 i = 0; i < 256; i++)
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{
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UInt32 r = i;
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for (int j = 0; j < 8; j++)
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if (r & 1)
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r = (r >> 1) ^ kCRCPoly;
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else
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r >>= 1;
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CCRC::Table[i] = (UInt16)r;
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}
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}
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class CCRCTableInit
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{
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public:
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CCRCTableInit() { CCRC::InitTable(); }
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} g_CRCTableInit;
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void CCRC::Update(const void *data, size_t size)
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{
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UInt16 v = _value;
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const Byte *p = (const Byte *)data;
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for (; size > 0; size--, p++)
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v = (UInt16)(Table[((Byte)(v)) ^ *p] ^ (v >> 8));
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_value = v;
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}
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class COutStreamWithCRC:
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public ISequentialOutStream,
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public CMyUnknownImp
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{
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public:
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MY_UNKNOWN_IMP
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STDMETHOD(Write)(const void *data, UInt32 size, UInt32 *processedSize);
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private:
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CCRC _crc;
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CMyComPtr<ISequentialOutStream> _stream;
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public:
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void Init(ISequentialOutStream *stream)
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{
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_stream = stream;
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_crc.Init();
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}
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void ReleaseStream() { _stream.Release(); }
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UInt32 GetCRC() const { return _crc.GetDigest(); }
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void InitCRC() { _crc.Init(); }
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};
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STDMETHODIMP COutStreamWithCRC::Write(const void *data, UInt32 size, UInt32 *processedSize)
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{
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UInt32 realProcessedSize;
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HRESULT result;
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if (!_stream)
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{
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realProcessedSize = size;
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result = S_OK;
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}
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else
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result = _stream->Write(data, size, &realProcessedSize);
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_crc.Update(data, realProcessedSize);
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if (processedSize != NULL)
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*processedSize = realProcessedSize;
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return result;
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}
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struct CItemEx: public CItem
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{
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UInt64 DataPosition;
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};
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class CHandler:
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public IInArchive,
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public CMyUnknownImp
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{
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CObjectVector<CItemEx> _items;
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CMyComPtr<IInStream> _stream;
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UInt64 _phySize;
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UInt32 _errorFlags;
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bool _isArc;
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public:
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MY_UNKNOWN_IMP1(IInArchive)
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INTERFACE_IInArchive(;)
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CHandler();
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};
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IMP_IInArchive_Props
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IMP_IInArchive_ArcProps_NO_Table
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CHandler::CHandler() {}
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STDMETHODIMP CHandler::GetNumberOfItems(UInt32 *numItems)
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{
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*numItems = _items.Size();
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return S_OK;
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}
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STDMETHODIMP CHandler::GetArchiveProperty(PROPID propID, PROPVARIANT *value)
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{
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NCOM::CPropVariant prop;
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switch (propID)
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{
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case kpidPhySize: prop = _phySize; break;
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case kpidErrorFlags:
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UInt32 v = _errorFlags;
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if (!_isArc) v |= kpv_ErrorFlags_IsNotArc;
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prop = v;
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break;
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}
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prop.Detach(value);
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return S_OK;
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}
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STDMETHODIMP CHandler::GetProperty(UInt32 index, PROPID propID, PROPVARIANT *value)
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{
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COM_TRY_BEGIN
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NCOM::CPropVariant prop;
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const CItemEx &item = _items[index];
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switch (propID)
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{
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case kpidPath:
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{
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UString s = NItemName::WinNameToOSName(MultiByteToUnicodeString(item.GetName(), CP_OEMCP));
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if (!s.IsEmpty())
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{
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if (s.Back() == WCHAR_PATH_SEPARATOR)
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s.DeleteBack();
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prop = s;
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}
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break;
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}
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case kpidIsDir: prop = item.IsDir(); break;
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case kpidSize: prop = item.Size; break;
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case kpidPackSize: prop = item.PackSize; break;
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case kpidCRC: prop = (UInt32)item.CRC; break;
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case kpidHostOS: prop = GetOS(item.OsId); break;
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case kpidMTime:
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{
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FILETIME utc;
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UInt32 unixTime;
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if (item.GetUnixTime(unixTime))
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NTime::UnixTimeToFileTime(unixTime, utc);
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else
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{
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FILETIME localFileTime;
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if (DosTimeToFileTime(item.ModifiedTime, localFileTime))
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{
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if (!LocalFileTimeToFileTime(&localFileTime, &utc))
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utc.dwHighDateTime = utc.dwLowDateTime = 0;
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}
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else
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utc.dwHighDateTime = utc.dwLowDateTime = 0;
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}
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prop = utc;
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break;
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}
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// case kpidAttrib: prop = (UInt32)item.Attributes; break;
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case kpidMethod:
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{
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char method2[kMethodIdSize + 1];
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method2[kMethodIdSize] = 0;
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memcpy(method2, item.Method, kMethodIdSize);
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prop = method2;
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break;
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}
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}
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prop.Detach(value);
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return S_OK;
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COM_TRY_END
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}
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STDMETHODIMP CHandler::Open(IInStream *stream,
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const UInt64 * /* maxCheckStartPosition */, IArchiveOpenCallback *callback)
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{
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COM_TRY_BEGIN
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Close();
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try
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{
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_items.Clear();
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UInt64 endPos = 0;
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bool needSetTotal = true;
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RINOK(stream->Seek(0, STREAM_SEEK_END, &endPos));
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RINOK(stream->Seek(0, STREAM_SEEK_SET, NULL));
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for (;;)
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{
|
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CItemEx item;
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bool filled;
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HRESULT result = GetNextItem(stream, filled, item);
|
|
RINOK(stream->Seek(0, STREAM_SEEK_CUR, &item.DataPosition));
|
|
if (result == S_FALSE)
|
|
{
|
|
_errorFlags = kpv_ErrorFlags_HeadersError;
|
|
break;
|
|
}
|
|
|
|
if (result != S_OK)
|
|
return S_FALSE;
|
|
_phySize = item.DataPosition;
|
|
if (!filled)
|
|
break;
|
|
_items.Add(item);
|
|
|
|
_isArc = true;
|
|
|
|
UInt64 newPostion;
|
|
RINOK(stream->Seek(item.PackSize, STREAM_SEEK_CUR, &newPostion));
|
|
if (newPostion > endPos)
|
|
{
|
|
_phySize = endPos;
|
|
_errorFlags = kpv_ErrorFlags_UnexpectedEnd;
|
|
break;
|
|
}
|
|
_phySize = newPostion;
|
|
if (callback)
|
|
{
|
|
if (needSetTotal)
|
|
{
|
|
RINOK(callback->SetTotal(NULL, &endPos));
|
|
needSetTotal = false;
|
|
}
|
|
if (_items.Size() % 100 == 0)
|
|
{
|
|
UInt64 numFiles = _items.Size();
|
|
UInt64 numBytes = item.DataPosition;
|
|
RINOK(callback->SetCompleted(&numFiles, &numBytes));
|
|
}
|
|
}
|
|
}
|
|
if (_items.IsEmpty())
|
|
return S_FALSE;
|
|
|
|
_stream = stream;
|
|
}
|
|
catch(...)
|
|
{
|
|
return S_FALSE;
|
|
}
|
|
COM_TRY_END
|
|
return S_OK;
|
|
}
|
|
|
|
STDMETHODIMP CHandler::Close()
|
|
{
|
|
_isArc = false;
|
|
_phySize = 0;
|
|
_errorFlags = 0;
|
|
_items.Clear();
|
|
_stream.Release();
|
|
return S_OK;
|
|
}
|
|
|
|
STDMETHODIMP CHandler::Extract(const UInt32 *indices, UInt32 numItems,
|
|
Int32 testModeSpec, IArchiveExtractCallback *extractCallback)
|
|
{
|
|
COM_TRY_BEGIN
|
|
bool testMode = (testModeSpec != 0);
|
|
UInt64 totalUnPacked = 0, totalPacked = 0;
|
|
bool allFilesMode = (numItems == (UInt32)(Int32)-1);
|
|
if (allFilesMode)
|
|
numItems = _items.Size();
|
|
if (numItems == 0)
|
|
return S_OK;
|
|
UInt32 i;
|
|
for (i = 0; i < numItems; i++)
|
|
{
|
|
const CItemEx &item = _items[allFilesMode ? i : indices[i]];
|
|
totalUnPacked += item.Size;
|
|
totalPacked += item.PackSize;
|
|
}
|
|
RINOK(extractCallback->SetTotal(totalUnPacked));
|
|
|
|
UInt64 currentTotalUnPacked = 0, currentTotalPacked = 0;
|
|
UInt64 currentItemUnPacked, currentItemPacked;
|
|
|
|
NCompress::NLzh::NDecoder::CCoder *lzhDecoderSpec = 0;
|
|
CMyComPtr<ICompressCoder> lzhDecoder;
|
|
// CMyComPtr<ICompressCoder> lzh1Decoder;
|
|
// CMyComPtr<ICompressCoder> arj2Decoder;
|
|
|
|
NCompress::CCopyCoder *copyCoderSpec = new NCompress::CCopyCoder();
|
|
CMyComPtr<ICompressCoder> copyCoder = copyCoderSpec;
|
|
|
|
CLocalProgress *lps = new CLocalProgress;
|
|
CMyComPtr<ICompressProgressInfo> progress = lps;
|
|
lps->Init(extractCallback, false);
|
|
|
|
CLimitedSequentialInStream *streamSpec = new CLimitedSequentialInStream;
|
|
CMyComPtr<ISequentialInStream> inStream(streamSpec);
|
|
streamSpec->SetStream(_stream);
|
|
|
|
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;
|
|
askMode = testMode ? NExtract::NAskMode::kTest :
|
|
NExtract::NAskMode::kExtract;
|
|
Int32 index = allFilesMode ? i : indices[i];
|
|
const CItemEx &item = _items[index];
|
|
RINOK(extractCallback->GetStream(index, &realOutStream, askMode));
|
|
|
|
if (item.IsDir())
|
|
{
|
|
// if (!testMode)
|
|
{
|
|
RINOK(extractCallback->PrepareOperation(askMode));
|
|
RINOK(extractCallback->SetOperationResult(NExtract::NOperationResult::kOK));
|
|
}
|
|
continue;
|
|
}
|
|
|
|
if (!testMode && !realOutStream)
|
|
continue;
|
|
|
|
RINOK(extractCallback->PrepareOperation(askMode));
|
|
currentItemUnPacked = item.Size;
|
|
currentItemPacked = item.PackSize;
|
|
|
|
{
|
|
COutStreamWithCRC *outStreamSpec = new COutStreamWithCRC;
|
|
CMyComPtr<ISequentialOutStream> outStream(outStreamSpec);
|
|
outStreamSpec->Init(realOutStream);
|
|
realOutStream.Release();
|
|
|
|
UInt64 pos;
|
|
_stream->Seek(item.DataPosition, STREAM_SEEK_SET, &pos);
|
|
|
|
streamSpec->Init(item.PackSize);
|
|
|
|
HRESULT result = S_OK;
|
|
Int32 opRes = NExtract::NOperationResult::kOK;
|
|
|
|
if (item.IsCopyMethod())
|
|
{
|
|
result = copyCoder->Code(inStream, outStream, NULL, NULL, progress);
|
|
if (result == S_OK && copyCoderSpec->TotalSize != item.PackSize)
|
|
result = S_FALSE;
|
|
}
|
|
else if (item.IsLh4GroupMethod())
|
|
{
|
|
if (!lzhDecoder)
|
|
{
|
|
lzhDecoderSpec = new NCompress::NLzh::NDecoder::CCoder;
|
|
lzhDecoder = lzhDecoderSpec;
|
|
}
|
|
lzhDecoderSpec->FinishMode = true;
|
|
lzhDecoderSpec->SetDictSize(1 << item.GetNumDictBits());
|
|
result = lzhDecoder->Code(inStream, outStream, NULL, ¤tItemUnPacked, progress);
|
|
if (result == S_OK && lzhDecoderSpec->GetInputProcessedSize() != item.PackSize)
|
|
result = S_FALSE;
|
|
}
|
|
/*
|
|
else if (item.IsLh1GroupMethod())
|
|
{
|
|
if (!lzh1Decoder)
|
|
{
|
|
lzh1DecoderSpec = new NCompress::NLzh1::NDecoder::CCoder;
|
|
lzh1Decoder = lzh1DecoderSpec;
|
|
}
|
|
lzh1DecoderSpec->SetDictionary(item.GetNumDictBits());
|
|
result = lzh1Decoder->Code(inStream, outStream, NULL, ¤tItemUnPacked, progress);
|
|
}
|
|
*/
|
|
else
|
|
opRes = NExtract::NOperationResult::kUnsupportedMethod;
|
|
|
|
if (opRes == NExtract::NOperationResult::kOK)
|
|
{
|
|
if (result == S_FALSE)
|
|
opRes = NExtract::NOperationResult::kDataError;
|
|
else
|
|
{
|
|
RINOK(result);
|
|
if (outStreamSpec->GetCRC() != item.CRC)
|
|
opRes = NExtract::NOperationResult::kCRCError;
|
|
}
|
|
}
|
|
outStream.Release();
|
|
RINOK(extractCallback->SetOperationResult(opRes));
|
|
}
|
|
}
|
|
return S_OK;
|
|
COM_TRY_END
|
|
}
|
|
|
|
static const Byte k_Signature[] = { '-', 'l', 'h' };
|
|
|
|
REGISTER_ARC_I(
|
|
"Lzh", "lzh lha", 0, 6,
|
|
k_Signature,
|
|
2,
|
|
0,
|
|
IsArc_Lzh)
|
|
|
|
}}
|