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bdb7999f07
hashcat/deps/unrar/recvol3.cpp
philsmd 616cb9859f
Added UnRAR dependency (version 5.9.4)
2020-09-08 10:34:21 +02:00

545 lines
13 KiB
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// Buffer size for all volumes involved.
static const size_t TotalBufferSize=0x4000000;
class RSEncode // Encode or decode data area, one object per one thread.
{
private:
RSCoder RSC;
public:
void EncodeBuf();
void DecodeBuf();
void Init(int RecVolNumber) {RSC.Init(RecVolNumber);}
byte *Buf;
byte *OutBuf;
int BufStart;
int BufEnd;
int FileNumber;
int RecVolNumber;
size_t RecBufferSize;
int *Erasures;
int EraSize;
};
#ifdef RAR_SMP
THREAD_PROC(RSEncodeThread)
{
RSEncode *rs=(RSEncode *)Data;
rs->EncodeBuf();
}
THREAD_PROC(RSDecodeThread)
{
RSEncode *rs=(RSEncode *)Data;
rs->DecodeBuf();
}
#endif
RecVolumes3::RecVolumes3(RAROptions *Cmd,bool TestOnly)
{
memset(SrcFile,0,sizeof(SrcFile));
if (TestOnly)
{
#ifdef RAR_SMP
RSThreadPool=NULL;
#endif
}
else
{
Buf.Alloc(TotalBufferSize);
memset(SrcFile,0,sizeof(SrcFile));
#ifdef RAR_SMP
RSThreadPool=new ThreadPool(Cmd->Threads);
#endif
}
}
RecVolumes3::~RecVolumes3()
{
for (size_t I=0;I<ASIZE(SrcFile);I++)
delete SrcFile[I];
#ifdef RAR_SMP
delete RSThreadPool;
#endif
}
void RSEncode::EncodeBuf()
{
for (int BufPos=BufStart;BufPos<BufEnd;BufPos++)
{
byte Data[256],Code[256];
for (int I=0;I<FileNumber;I++)
Data[I]=Buf[I*RecBufferSize+BufPos];
RSC.Encode(Data,FileNumber,Code);
for (int I=0;I<RecVolNumber;I++)
OutBuf[I*RecBufferSize+BufPos]=Code[I];
}
}
// Check for names like arc5_3_1.rev created by RAR 3.0.
static bool IsNewStyleRev(const wchar *Name)
{
wchar *Ext=GetExt(Name);
if (Ext==NULL)
return true;
int DigitGroup=0;
for (Ext--;Ext>Name;Ext--)
if (!IsDigit(*Ext))
if (*Ext=='_' && IsDigit(*(Ext-1)))
DigitGroup++;
else
break;
return DigitGroup<2;
}
bool RecVolumes3::Restore(RAROptions *Cmd,const wchar *Name,bool Silent)
{
wchar ArcName[NM];
wcsncpyz(ArcName,Name,ASIZE(ArcName));
wchar *Ext=GetExt(ArcName);
bool NewStyle=false; // New style .rev volumes are supported since RAR 3.10.
bool RevName=Ext!=NULL && wcsicomp(Ext,L".rev")==0;
if (RevName)
{
NewStyle=IsNewStyleRev(ArcName);
while (Ext>ArcName+1 && (IsDigit(*(Ext-1)) || *(Ext-1)=='_'))
Ext--;
wcsncpyz(Ext,L"*.*",ASIZE(ArcName)-(Ext-ArcName));
FindFile Find;
Find.SetMask(ArcName);
FindData fd;
while (Find.Next(&fd))
{
Archive Arc(Cmd);
if (Arc.WOpen(fd.Name) && Arc.IsArchive(true))
{
wcsncpyz(ArcName,fd.Name,ASIZE(ArcName));
break;
}
}
}
Archive Arc(Cmd);
if (!Arc.WCheckOpen(ArcName))
return false;
if (!Arc.Volume)
{
uiMsg(UIERROR_NOTVOLUME,ArcName);
return false;
}
bool NewNumbering=Arc.NewNumbering;
Arc.Close();
wchar *VolNumStart=VolNameToFirstName(ArcName,ArcName,ASIZE(ArcName),NewNumbering);
wchar RecVolMask[NM];
wcsncpyz(RecVolMask,ArcName,ASIZE(RecVolMask));
size_t BaseNamePartLength=VolNumStart-ArcName;
wcsncpyz(RecVolMask+BaseNamePartLength,L"*.rev",ASIZE(RecVolMask)-BaseNamePartLength);
int64 RecFileSize=0;
// We cannot display "Calculating CRC..." message here, because we do not
// know if we'll find any recovery volumes. We'll display it after finding
// the first recovery volume.
bool CalcCRCMessageDone=false;
FindFile Find;
Find.SetMask(RecVolMask);
FindData RecData;
int FileNumber=0,RecVolNumber=0,FoundRecVolumes=0,MissingVolumes=0;
wchar PrevName[NM];
while (Find.Next(&RecData))
{
wchar *CurName=RecData.Name;
int P[3];
if (!RevName && !NewStyle)
{
NewStyle=true;
wchar *Dot=GetExt(CurName);
if (Dot!=NULL)
{
int LineCount=0;
Dot--;
while (Dot>CurName && *Dot!='.')
{
if (*Dot=='_')
LineCount++;
Dot--;
}
if (LineCount==2)
NewStyle=false;
}
}
if (NewStyle)
{
if (!CalcCRCMessageDone)
{
uiMsg(UIMSG_RECVOLCALCCHECKSUM);
CalcCRCMessageDone=true;
}
uiMsg(UIMSG_STRING,CurName);
File CurFile;
CurFile.TOpen(CurName);
CurFile.Seek(0,SEEK_END);
int64 Length=CurFile.Tell();
CurFile.Seek(Length-7,SEEK_SET);
for (int I=0;I<3;I++)
P[2-I]=CurFile.GetByte()+1;
uint FileCRC=0;
for (int I=0;I<4;I++)
FileCRC|=CurFile.GetByte()<<(I*8);
uint CalcCRC;
CalcFileSum(&CurFile,&CalcCRC,NULL,Cmd->Threads,Length-4);
if (FileCRC!=CalcCRC)
{
uiMsg(UIMSG_CHECKSUM,CurName);
continue;
}
}
else
{
wchar *Dot=GetExt(CurName);
if (Dot==NULL)
continue;
bool WrongParam=false;
for (size_t I=0;I<ASIZE(P);I++)
{
do
{
Dot--;
} while (IsDigit(*Dot) && Dot>=CurName+BaseNamePartLength);
P[I]=atoiw(Dot+1);
if (P[I]==0 || P[I]>255)
WrongParam=true;
}
if (WrongParam)
continue;
}
if (P[1]+P[2]>255)
continue;
if (RecVolNumber!=0 && RecVolNumber!=P[1] || FileNumber!=0 && FileNumber!=P[2])
{
uiMsg(UIERROR_RECVOLDIFFSETS,CurName,PrevName);
return false;
}
RecVolNumber=P[1];
FileNumber=P[2];
wcsncpyz(PrevName,CurName,ASIZE(PrevName));
File *NewFile=new File;
NewFile->TOpen(CurName);
SrcFile[FileNumber+P[0]-1]=NewFile;
FoundRecVolumes++;
if (RecFileSize==0)
RecFileSize=NewFile->FileLength();
}
if (!Silent || FoundRecVolumes!=0)
uiMsg(UIMSG_RECVOLFOUND,FoundRecVolumes);
if (FoundRecVolumes==0)
return false;
bool WriteFlags[256];
memset(WriteFlags,0,sizeof(WriteFlags));
wchar LastVolName[NM];
*LastVolName=0;
for (int CurArcNum=0;CurArcNum<FileNumber;CurArcNum++)
{
Archive *NewFile=new Archive(Cmd);
bool ValidVolume=FileExist(ArcName);
if (ValidVolume)
{
NewFile->TOpen(ArcName);
ValidVolume=NewFile->IsArchive(false);
if (ValidVolume)
{
while (NewFile->ReadHeader()!=0)
{
if (NewFile->GetHeaderType()==HEAD_ENDARC)
{
uiMsg(UIMSG_STRING,ArcName);
if (NewFile->EndArcHead.DataCRC)
{
uint CalcCRC;
CalcFileSum(NewFile,&CalcCRC,NULL,Cmd->Threads,NewFile->CurBlockPos);
if (NewFile->EndArcHead.ArcDataCRC!=CalcCRC)
{
ValidVolume=false;
uiMsg(UIMSG_CHECKSUM,ArcName);
}
}
break;
}
NewFile->SeekToNext();
}
}
if (!ValidVolume)
{
NewFile->Close();
wchar NewName[NM];
wcsncpyz(NewName,ArcName,ASIZE(NewName));
wcsncatz(NewName,L".bad",ASIZE(NewName));
uiMsg(UIMSG_BADARCHIVE,ArcName);
uiMsg(UIMSG_RENAMING,ArcName,NewName);
RenameFile(ArcName,NewName);
}
NewFile->Seek(0,SEEK_SET);
}
if (!ValidVolume)
{
// It is important to return 'false' instead of aborting here,
// so if we are called from extraction, we will be able to continue
// extracting. It may happen if .rar and .rev are on read-only disks
// like CDs.
if (!NewFile->Create(ArcName,FMF_WRITE|FMF_SHAREREAD))
{
// We need to display the title of operation before the error message,
// to make clear for user that create error is related to recovery
// volumes. This is why we cannot use WCreate call here. Title must be
// before create error, not after that.
uiMsg(UIERROR_RECVOLFOUND,FoundRecVolumes); // Intentionally not displayed in console mode.
uiMsg(UIERROR_RECONSTRUCTING);
ErrHandler.CreateErrorMsg(ArcName);
return false;
}
WriteFlags[CurArcNum]=true;
MissingVolumes++;
if (CurArcNum==FileNumber-1)
wcsncpyz(LastVolName,ArcName,ASIZE(LastVolName));
uiMsg(UIMSG_MISSINGVOL,ArcName);
uiMsg(UIEVENT_NEWARCHIVE,ArcName);
}
SrcFile[CurArcNum]=(File*)NewFile;
NextVolumeName(ArcName,ASIZE(ArcName),!NewNumbering);
}
uiMsg(UIMSG_RECVOLMISSING,MissingVolumes);
if (MissingVolumes==0)
{
uiMsg(UIERROR_RECVOLALLEXIST);
return false;
}
if (MissingVolumes>FoundRecVolumes)
{
uiMsg(UIERROR_RECVOLFOUND,FoundRecVolumes); // Intentionally not displayed in console mode.
uiMsg(UIERROR_RECVOLCANNOTFIX);
return false;
}
uiMsg(UIMSG_RECONSTRUCTING);
int TotalFiles=FileNumber+RecVolNumber;
int Erasures[256],EraSize=0;
for (int I=0;I<TotalFiles;I++)
if (WriteFlags[I] || SrcFile[I]==NULL)
Erasures[EraSize++]=I;
int64 ProcessedSize=0;
int LastPercent=-1;
mprintf(L" ");
// Size of per file buffer.
size_t RecBufferSize=TotalBufferSize/TotalFiles;
#ifdef RAR_SMP
uint ThreadNumber=Cmd->Threads;
#else
uint ThreadNumber=1;
#endif
RSEncode *rse=new RSEncode[ThreadNumber];
for (uint I=0;I<ThreadNumber;I++)
rse[I].Init(RecVolNumber);
while (true)
{
Wait();
int MaxRead=0;
for (int I=0;I<TotalFiles;I++)
if (WriteFlags[I] || SrcFile[I]==NULL)
memset(&Buf[I*RecBufferSize],0,RecBufferSize);
else
{
int ReadSize=SrcFile[I]->Read(&Buf[I*RecBufferSize],RecBufferSize);
if ((size_t)ReadSize!=RecBufferSize)
memset(&Buf[I*RecBufferSize+ReadSize],0,RecBufferSize-ReadSize);
if (ReadSize>MaxRead)
MaxRead=ReadSize;
}
if (MaxRead==0)
break;
int CurPercent=ToPercent(ProcessedSize,RecFileSize);
if (!Cmd->DisablePercentage && CurPercent!=LastPercent)
{
uiProcessProgress("RC",ProcessedSize,RecFileSize);
LastPercent=CurPercent;
}
ProcessedSize+=MaxRead;
int BlockStart=0;
int BlockSize=MaxRead/ThreadNumber;
if (BlockSize<0x100)
BlockSize=MaxRead;
for (uint CurThread=0;BlockStart<MaxRead;CurThread++)
{
// Last thread processes all left data including increasement
// from rounding error.
if (CurThread==ThreadNumber-1)
BlockSize=MaxRead-BlockStart;
RSEncode *curenc=rse+CurThread;
curenc->Buf=&Buf[0];
curenc->BufStart=BlockStart;
curenc->BufEnd=BlockStart+BlockSize;
curenc->FileNumber=TotalFiles;
curenc->RecBufferSize=RecBufferSize;
curenc->Erasures=Erasures;
curenc->EraSize=EraSize;
#ifdef RAR_SMP
if (ThreadNumber>1)
RSThreadPool->AddTask(RSDecodeThread,(void*)curenc);
else
curenc->DecodeBuf();
#else
curenc->DecodeBuf();
#endif
BlockStart+=BlockSize;
}
#ifdef RAR_SMP
RSThreadPool->WaitDone();
#endif // RAR_SMP
for (int I=0;I<FileNumber;I++)
if (WriteFlags[I])
SrcFile[I]->Write(&Buf[I*RecBufferSize],MaxRead);
}
delete[] rse;
for (int I=0;I<RecVolNumber+FileNumber;I++)
if (SrcFile[I]!=NULL)
{
File *CurFile=SrcFile[I];
if (NewStyle && WriteFlags[I])
{
int64 Length=CurFile->Tell();
CurFile->Seek(Length-7,SEEK_SET);
for (int J=0;J<7;J++)
CurFile->PutByte(0);
}
CurFile->Close();
SrcFile[I]=NULL;
}
if (*LastVolName!=0)
{
// Truncate the last volume to its real size.
Archive Arc(Cmd);
if (Arc.Open(LastVolName,FMF_UPDATE) && Arc.IsArchive(true) &&
Arc.SearchBlock(HEAD_ENDARC))
{
Arc.Seek(Arc.NextBlockPos,SEEK_SET);
char Buf[8192];
int ReadSize=Arc.Read(Buf,sizeof(Buf));
int ZeroCount=0;
while (ZeroCount<ReadSize && Buf[ZeroCount]==0)
ZeroCount++;
if (ZeroCount==ReadSize)
{
Arc.Seek(Arc.NextBlockPos,SEEK_SET);
Arc.Truncate();
}
}
}
#if !defined(SILENT)
if (!Cmd->DisablePercentage)
mprintf(L"\b\b\b\b100%%");
if (!Silent && !Cmd->DisableDone)
mprintf(St(MDone));
#endif
return true;
}
void RSEncode::DecodeBuf()
{
for (int BufPos=BufStart;BufPos<BufEnd;BufPos++)
{
byte Data[256];
for (int I=0;I<FileNumber;I++)
Data[I]=Buf[I*RecBufferSize+BufPos];
RSC.Decode(Data,FileNumber,Erasures,EraSize);
for (int I=0;I<EraSize;I++)
Buf[Erasures[I]*RecBufferSize+BufPos]=Data[Erasures[I]];
}
}
void RecVolumes3::Test(RAROptions *Cmd,const wchar *Name)
{
if (!IsNewStyleRev(Name)) // RAR 3.0 name#_#_#.rev do not include CRC32.
{
ErrHandler.UnknownMethodMsg(Name,Name);
return;
}
wchar VolName[NM];
wcsncpyz(VolName,Name,ASIZE(VolName));
while (FileExist(VolName))
{
File CurFile;
if (!CurFile.Open(VolName))
{
ErrHandler.OpenErrorMsg(VolName); // It also sets RARX_OPEN.
continue;
}
if (!uiStartFileExtract(VolName,false,true,false))
return;
mprintf(St(MExtrTestFile),VolName);
mprintf(L" ");
CurFile.Seek(0,SEEK_END);
int64 Length=CurFile.Tell();
CurFile.Seek(Length-4,SEEK_SET);
uint FileCRC=0;
for (int I=0;I<4;I++)
FileCRC|=CurFile.GetByte()<<(I*8);
uint CalcCRC;
CalcFileSum(&CurFile,&CalcCRC,NULL,1,Length-4,Cmd->DisablePercentage ? 0 : CALCFSUM_SHOWPROGRESS);
if (FileCRC==CalcCRC)
{
mprintf(L"%s%s ",L"\b\b\b\b\b ",St(MOk));
}
else
{
uiMsg(UIERROR_CHECKSUM,VolName,VolName);
ErrHandler.SetErrorCode(RARX_CRC);
}
NextVolumeName(VolName,ASIZE(VolName),false);
}
}
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