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#include "rar.hpp"
ComprDataIO::ComprDataIO()
{
Init();
}
void ComprDataIO::Init()
{
UnpackFromMemory=false;
UnpackToMemory=false;
UnpPackedSize=0;
ShowProgress=true;
TestMode=false;
SkipUnpCRC=false;
PackVolume=false;
UnpVolume=false;
NextVolumeMissing=false;
SrcFile=NULL;
DestFile=NULL;
UnpWrSize=0;
Command=NULL;
Encryption=0;
Decryption=0;
TotalPackRead=0;
CurPackRead=CurPackWrite=CurUnpRead=CurUnpWrite=0;
PackFileCRC=UnpFileCRC=PackedCRC=0xffffffff;
LastPercent=-1;
SubHead=NULL;
SubHeadPos=NULL;
CurrentCommand=0;
ProcessedArcSize=TotalArcSize=0;
}
int ComprDataIO::UnpRead(byte *Addr,size_t Count)
{
int RetCode=0,TotalRead=0;
byte *ReadAddr;
ReadAddr=Addr;
while (Count > 0)
{
Archive *SrcArc=(Archive *)SrcFile;
size_t ReadSize=((int64)Count>UnpPackedSize) ? (size_t)UnpPackedSize:Count;
if (UnpackFromMemory)
{
memcpy(Addr,UnpackFromMemoryAddr,UnpackFromMemorySize);
RetCode=(int)UnpackFromMemorySize;
UnpackFromMemorySize=0;
}
else
{
if (!SrcFile->IsOpened())
return(-1);
RetCode=SrcFile->Read(ReadAddr,ReadSize);
FileHeader *hd=SubHead!=NULL ? SubHead:&SrcArc->NewLhd;
if (hd->Flags & LHD_SPLIT_AFTER)
PackedCRC=CRC(PackedCRC,ReadAddr,RetCode);
}
CurUnpRead+=RetCode;
TotalRead+=RetCode;
#ifndef NOVOLUME
// These variable are not used in NOVOLUME mode, so it is better
// to exclude commands below to avoid compiler warnings.
ReadAddr+=RetCode;
Count-=RetCode;
#endif
UnpPackedSize-=RetCode;
if (UnpPackedSize == 0 && UnpVolume)
{
#ifndef NOVOLUME
if (!MergeArchive(*SrcArc,this,true,CurrentCommand))
#endif
{
NextVolumeMissing=true;
return(-1);
}
}
else
break;
}
Archive *SrcArc=(Archive *)SrcFile;
if (SrcArc!=NULL)
ShowUnpRead(SrcArc->CurBlockPos+CurUnpRead,UnpArcSize);
if (RetCode!=-1)
{
RetCode=TotalRead;
#ifndef RAR_NOCRYPT
if (Decryption)
#ifndef SFX_MODULE
if (Decryption<20)
Decrypt.Crypt(Addr,RetCode,(Decryption==15) ? NEW_CRYPT : OLD_DECODE);
else
if (Decryption==20)
for (int I=0;I<RetCode;I+=16)
Decrypt.DecryptBlock20(&Addr[I]);
else
#endif
{
int CryptSize=(RetCode & 0xf)==0 ? RetCode:((RetCode & ~0xf)+16);
Decrypt.DecryptBlock(Addr,CryptSize);
}
#endif
}
Wait();
return(RetCode);
}
#if defined(RARDLL) && defined(_MSC_VER) && !defined(_WIN_64)
// Disable the run time stack check for unrar.dll, so we can manipulate
// with ProcessDataProc call type below. Run time check would intercept
// a wrong ESP before we restore it.
#pragma runtime_checks( "s", off )
#endif
void ComprDataIO::UnpWrite(byte *Addr,size_t Count)
{
#ifdef RARDLL
RAROptions *Cmd=((Archive *)SrcFile)->GetRAROptions();
if (Cmd->DllOpMode!=RAR_SKIP)
{
if (Cmd->Callback!=NULL &&
Cmd->Callback(UCM_PROCESSDATA,Cmd->UserData,(LPARAM)Addr,Count)==-1)
ErrHandler.Exit(RARX_USERBREAK);
if (Cmd->ProcessDataProc!=NULL)
{
// Here we preserve ESP value. It is necessary for those developers,
// who still define ProcessDataProc callback as "C" type function,
// even though in year 2001 we announced in unrar.dll whatsnew.txt
// that it will be PASCAL type (for compatibility with Visual Basic).
#if defined(_MSC_VER)
#ifndef _WIN_64
__asm mov ebx,esp
#endif
#elif defined(_WIN_ALL) && defined(__BORLANDC__)
_EBX=_ESP;
#endif
int RetCode=Cmd->ProcessDataProc(Addr,(int)Count);
// Restore ESP after ProcessDataProc with wrongly defined calling
// convention broken it.
#if defined(_MSC_VER)
#ifndef _WIN_64
__asm mov esp,ebx
#endif
#elif defined(_WIN_ALL) && defined(__BORLANDC__)
_ESP=_EBX;
#endif
if (RetCode==0)
ErrHandler.Exit(RARX_USERBREAK);
}
}
#endif // RARDLL
UnpWrAddr=Addr;
UnpWrSize=Count;
if (UnpackToMemory)
{
if (Count <= UnpackToMemorySize)
{
memcpy(UnpackToMemoryAddr,Addr,Count);
UnpackToMemoryAddr+=Count;
UnpackToMemorySize-=Count;
}
else
//added by me
Cmd->DllError = ERAR_SMALL_BUF;
}
else
if (!TestMode)
DestFile->Write(Addr,Count);
CurUnpWrite+=Count;
if (!SkipUnpCRC)
#ifndef SFX_MODULE
if (((Archive *)SrcFile)->OldFormat)
UnpFileCRC=OldCRC((ushort)UnpFileCRC,Addr,Count);
else
#endif
UnpFileCRC=CRC(UnpFileCRC,Addr,Count);
ShowUnpWrite();
Wait();
}
#if defined(RARDLL) && defined(_MSC_VER) && !defined(_WIN_64)
// Restore the run time stack check for unrar.dll.
#pragma runtime_checks( "s", restore )
#endif
void ComprDataIO::ShowUnpRead(int64 ArcPos,int64 ArcSize)
{
if (ShowProgress && SrcFile!=NULL)
{
if (TotalArcSize!=0)
{
// important when processing several archives or multivolume archive
ArcSize=TotalArcSize;
ArcPos+=ProcessedArcSize;
}
Archive *SrcArc=(Archive *)SrcFile;
RAROptions *Cmd=SrcArc->GetRAROptions();
int CurPercent=ToPercent(ArcPos,ArcSize);
if (!Cmd->DisablePercentage && CurPercent!=LastPercent)
{
mprintf("\b\b\b\b%3d%%",CurPercent);
LastPercent=CurPercent;
}
}
}
void ComprDataIO::ShowUnpWrite()
{
}
void ComprDataIO::SetFiles(File *SrcFile,File *DestFile)
{
if (SrcFile!=NULL)
ComprDataIO::SrcFile=SrcFile;
if (DestFile!=NULL)
ComprDataIO::DestFile=DestFile;
LastPercent=-1;
}
void ComprDataIO::GetUnpackedData(byte **Data,size_t *Size)
{
*Data=UnpWrAddr;
*Size=UnpWrSize;
}
void ComprDataIO::SetEncryption(int Method,SecPassword *Password,const byte *Salt,bool Encrypt,bool HandsOffHash)
{
if (Encrypt)
{
Encryption=Password->IsSet() ? Method:0;
#ifndef RAR_NOCRYPT
Crypt.SetCryptKeys(Password,Salt,Encrypt,false,HandsOffHash);
#endif
}
else
{
Decryption=Password->IsSet() ? Method:0;
#ifndef RAR_NOCRYPT
Decrypt.SetCryptKeys(Password,Salt,Encrypt,Method<29,HandsOffHash);
#endif
}
}
#if !defined(SFX_MODULE) && !defined(RAR_NOCRYPT)
void ComprDataIO::SetAV15Encryption()
{
Decryption=15;
Decrypt.SetAV15Encryption();
}
#endif
#if !defined(SFX_MODULE) && !defined(RAR_NOCRYPT)
void ComprDataIO::SetCmt13Encryption()
{
Decryption=13;
Decrypt.SetCmt13Encryption();
}
#endif
void ComprDataIO::SetUnpackToMemory(byte *Addr,size_t Size) //changed from uint by me
{
UnpackToMemory=true;
UnpackToMemoryAddr=Addr;
UnpackToMemorySize=Size;
}
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