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#include "rar.hpp"
#ifndef SHELL_EXT
#include "arccmt.cpp"
#endif
Archive::Archive(RAROptions *InitCmd)
{
Cmd=InitCmd==NULL ? &DummyCmd:InitCmd;
OpenShared=Cmd->OpenShared;
OldFormat=false;
Solid=false;
Volume=false;
MainComment=false;
Locked=false;
Signed=false;
NotFirstVolume=false;
SFXSize=0;
LatestTime.Reset();
Protected=false;
Encrypted=false;
BrokenFileHeader=false;
LastReadBlock=0;
CurBlockPos=0;
NextBlockPos=0;
RecoveryPos=SIZEOF_MARKHEAD;
RecoverySectors=-1;
memset(&NewMhd,0,sizeof(NewMhd));
NewMhd.HeadType=MAIN_HEAD;
NewMhd.HeadSize=SIZEOF_NEWMHD;
HeaderCRC=0;
VolWrite=0;
AddingFilesSize=0;
AddingHeadersSize=0;
#if !defined(SHELL_EXT) && !defined(NOCRYPT)
*HeadersSalt=0;
*SubDataSalt=0;
#endif
*FirstVolumeName=0;
*FirstVolumeNameW=0;
Splitting=false;
NewArchive=false;
SilentOpen=false;
}
#ifndef SHELL_EXT
void Archive::CheckArc(bool EnableBroken)
{
if (!IsArchive(EnableBroken))
{
Log(FileName,St(MBadArc),FileName);
ErrHandler.Exit(FATAL_ERROR);
}
}
#endif
#if !defined(SHELL_EXT) && !defined(SFX_MODULE)
void Archive::CheckOpen(char *Name,wchar *NameW)
{
TOpen(Name,NameW);
CheckArc(false);
}
#endif
bool Archive::WCheckOpen(char *Name,wchar *NameW)
{
if (!WOpen(Name,NameW))
return(false);
if (!IsArchive(false))
{
#ifndef SHELL_EXT
Log(FileName,St(MNotRAR),FileName);
#endif
Close();
return(false);
}
return(true);
}
bool Archive::IsSignature(byte *D)
{
bool Valid=false;
if (D[0]==0x52)
{
#ifndef SFX_MODULE
if (D[1]==0x45 && D[2]==0x7e && D[3]==0x5e)
{
OldFormat=true;
Valid=true;
}
else
#endif
{
if (D[1]==0x61 && D[2]==0x72 && D[3]==0x21 && D[4]==0x1a && D[5]==0x07 && D[6]==0x00)
{
OldFormat=false;
Valid=true;
}
}
}
return(Valid);
}
bool Archive::IsArchive(bool EnableBroken)
{
Encrypted=false;
#ifndef SFX_MODULE
if (IsDevice())
{
#ifndef SHELL_EXT
Log(FileName,St(MInvalidName),FileName);
#endif
return(false);
}
#endif
if (Read(MarkHead.Mark,SIZEOF_MARKHEAD)!=SIZEOF_MARKHEAD)
return(false);
SFXSize=0;
if (IsSignature(MarkHead.Mark))
{
if (OldFormat)
Seek(0,SEEK_SET);
}
else
{
Array<char> Buffer(0x80000);
long CurPos=int64to32(Tell());
int ReadSize=Read(&Buffer[0],Buffer.Size()-16);
for (int I=0;I<ReadSize;I++)
if (Buffer[I]==0x52 && IsSignature((byte *)&Buffer[I]))
{
if (OldFormat && I>0 && CurPos<28 && ReadSize>31)
{
char *D=&Buffer[28-CurPos];
if (D[0]!=0x52 || D[1]!=0x53 || D[2]!=0x46 || D[3]!=0x58)
continue;
}
SFXSize=CurPos+I;
Seek(SFXSize,SEEK_SET);
if (!OldFormat)
Read(MarkHead.Mark,SIZEOF_MARKHEAD);
break;
}
if (SFXSize==0)
return(false);
}
ReadHeader();
SeekToNext();
#ifndef SFX_MODULE
if (OldFormat)
{
NewMhd.Flags=OldMhd.Flags & 0x3f;
NewMhd.HeadSize=OldMhd.HeadSize;
}
else
#endif
{
if (HeaderCRC!=NewMhd.HeadCRC)
{
#ifndef SHELL_EXT
Log(FileName,St(MLogMainHead));
#endif
Alarm();
if (!EnableBroken)
return(false);
}
}
Volume=(NewMhd.Flags & MHD_VOLUME);
Solid=(NewMhd.Flags & MHD_SOLID)!=0;
MainComment=(NewMhd.Flags & MHD_COMMENT)!=0;
Locked=(NewMhd.Flags & MHD_LOCK)!=0;
Signed=(NewMhd.PosAV!=0);
Protected=(NewMhd.Flags & MHD_PROTECT)!=0;
Encrypted=(NewMhd.Flags & MHD_PASSWORD)!=0;
#ifdef RARDLL
SilentOpen=true;
#endif
if (!SilentOpen || !Encrypted)
{
SaveFilePos SavePos(*this);
Int64 SaveCurBlockPos=CurBlockPos,SaveNextBlockPos=NextBlockPos;
NotFirstVolume=false;
while (ReadHeader())
{
int HeaderType=GetHeaderType();
if (HeaderType==NEWSUB_HEAD)
{
if (SubHead.CmpName(SUBHEAD_TYPE_CMT))
MainComment=true;
if ((SubHead.Flags & LHD_SPLIT_BEFORE) ||
(Volume && (NewMhd.Flags & MHD_FIRSTVOLUME)==0))
NotFirstVolume=true;
}
else
{
if ((HeaderType==FILE_HEAD && ((NewLhd.Flags & LHD_SPLIT_BEFORE)!=0)) ||
(Volume && NewLhd.UnpVer>=29 && (NewMhd.Flags & MHD_FIRSTVOLUME)==0))
NotFirstVolume=true;
break;
}
SeekToNext();
}
CurBlockPos=SaveCurBlockPos;
NextBlockPos=SaveNextBlockPos;
}
return(true);
}
void Archive::SeekToNext()
{
Seek(NextBlockPos,SEEK_SET);
}
#ifndef SFX_MODULE
int Archive::GetRecoverySize(bool Required)
{
if (!Protected)
return(0);
if (RecoverySectors!=-1 || !Required)
return(RecoverySectors);
SaveFilePos SavePos(*this);
Seek(SFXSize,SEEK_SET);
SearchSubBlock(SUBHEAD_TYPE_RR);
return(RecoverySectors);
}
#endif
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