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bool IsAnsiComment(const char *Data,int Size);
bool Archive::GetComment(Array<byte> *CmtData,Array<wchar> *CmtDataW)
{
if (!MainComment)
return(false);
SaveFilePos SavePos(*this);
#ifndef SFX_MODULE
ushort CmtLength;
if (OldFormat)
{
Seek(SFXSize+SIZEOF_OLDMHD,SEEK_SET);
CmtLength=GetByte();
CmtLength+=(GetByte()<<8);
}
else
#endif
{
if ((NewMhd.Flags & MHD_COMMENT)!=0)
{
// Old style (RAR 2.9) archive comment embedded into the main
// archive header.
Seek(SFXSize+SIZEOF_MARKHEAD+SIZEOF_NEWMHD,SEEK_SET);
ReadHeader();
}
else
{
// Current (RAR 3.0+) version of archive comment.
Seek(SFXSize+SIZEOF_MARKHEAD+NewMhd.HeadSize,SEEK_SET);
return(SearchSubBlock(SUBHEAD_TYPE_CMT)!=0 && ReadCommentData(CmtData,CmtDataW)!=0);
}
#ifndef SFX_MODULE
// Old style (RAR 2.9) comment header embedded into the main
// archive header.
if (CommHead.HeadCRC!=HeaderCRC)
{
Log(FileName,St(MLogCommHead));
Alarm();
return(false);
}
CmtLength=CommHead.HeadSize-SIZEOF_COMMHEAD;
#endif
}
#ifndef SFX_MODULE
if (OldFormat && (OldMhd.Flags & MHD_PACK_COMMENT)!=0 || !OldFormat && CommHead.Method!=0x30)
{
if (!OldFormat && (CommHead.UnpVer < 15 || CommHead.UnpVer > UNP_VER || CommHead.Method > 0x35))
return(false);
ComprDataIO DataIO;
DataIO.SetTestMode(true);
uint UnpCmtLength;
if (OldFormat)
{
#ifdef RAR_NOCRYPT
return(false);
#else
UnpCmtLength=GetByte();
UnpCmtLength+=(GetByte()<<8);
CmtLength-=2;
DataIO.SetCmt13Encryption();
#endif
}
else
UnpCmtLength=CommHead.UnpSize;
DataIO.SetFiles(this,NULL);
DataIO.EnableShowProgress(false);
DataIO.SetPackedSizeToRead(CmtLength);
Unpack Unpack(&DataIO);
Unpack.Init();
Unpack.SetDestSize(UnpCmtLength);
Unpack.DoUnpack(CommHead.UnpVer,false);
if (!OldFormat && ((~DataIO.UnpFileCRC)&0xffff)!=CommHead.CommCRC)
{
Log(FileName,St(MLogCommBrk));
Alarm();
return(false);
}
else
{
byte *UnpData;
size_t UnpDataSize;
DataIO.GetUnpackedData(&UnpData,&UnpDataSize);
CmtData->Alloc(UnpDataSize);
memcpy(&((*CmtData)[0]),UnpData,UnpDataSize);
}
}
else
{
CmtData->Alloc(CmtLength);
Read(&((*CmtData)[0]),CmtLength);
if (!OldFormat && CommHead.CommCRC!=(~CRC(0xffffffff,&((*CmtData)[0]),CmtLength)&0xffff))
{
Log(FileName,St(MLogCommBrk));
Alarm();
CmtData->Reset();
return(false);
}
}
#endif
#if defined(_WIN_ALL) && !defined(_WIN_CE)
if (CmtData->Size()>0)
{
size_t CmtSize=CmtData->Size();
char *DataA=(char *)CmtData->Addr();
OemToCharBuffA(DataA,DataA,(DWORD)CmtSize);
if (CmtDataW!=NULL)
{
CmtDataW->Alloc(CmtSize+1);
// It can cause reallocation, so we should not use 'DataA' variable
// with previosuly saved CmtData->Addr() after Push() call.
CmtData->Push(0);
CharToWide((char *)CmtData->Addr(),CmtDataW->Addr(),CmtSize+1);
CmtData->Alloc(CmtSize);
CmtDataW->Alloc(wcslen(CmtDataW->Addr()));
}
}
#endif
return(CmtData->Size()>0);
}
size_t Archive::ReadCommentData(Array<byte> *CmtData,Array<wchar> *CmtDataW)
{
bool Unicode=SubHead.SubFlags & SUBHEAD_FLAGS_CMT_UNICODE;
if (!ReadSubData(CmtData,NULL))
return(0);
size_t CmtSize=CmtData->Size();
if (Unicode)
{
CmtSize/=2;
Array<wchar> DataW(CmtSize+1);
RawToWide(CmtData->Addr(),DataW.Addr(),CmtSize);
DataW[CmtSize]=0;
size_t DestSize=CmtSize*4;
CmtData->Alloc(DestSize+1);
WideToChar(DataW.Addr(),(char *)CmtData->Addr(),DestSize);
(*CmtData)[DestSize]=0;
CmtSize=strlen((char *)CmtData->Addr());
CmtData->Alloc(CmtSize);
if (CmtDataW!=NULL)
{
*CmtDataW=DataW;
CmtDataW->Alloc(CmtSize);
}
}
else
if (CmtDataW!=NULL)
{
CmtData->Push(0);
CmtDataW->Alloc(CmtSize+1);
CharToWide((char *)CmtData->Addr(),CmtDataW->Addr(),CmtSize+1);
CmtData->Alloc(CmtSize);
CmtDataW->Alloc(wcslen(CmtDataW->Addr()));
}
return(CmtSize);
}
void Archive::ViewComment()
{
#ifndef GUI
if (Cmd->DisableComment)
return;
Array<byte> CmtBuf;
if (GetComment(&CmtBuf,NULL))
{
size_t CmtSize=CmtBuf.Size();
char *ChPtr=(char *)memchr(&CmtBuf[0],0x1A,CmtSize);
if (ChPtr!=NULL)
CmtSize=ChPtr-(char *)&CmtBuf[0];
mprintf("\n");
OutComment((char *)&CmtBuf[0],CmtSize);
}
#endif
}
#ifndef SFX_MODULE
// Used for archives created by old RAR versions up to and including RAR 2.9.
// New RAR versions store file comments in separate headers and such comments
// are displayed in ListNewSubHeader function.
void Archive::ViewFileComment()
{
if (!(NewLhd.Flags & LHD_COMMENT) || Cmd->DisableComment || OldFormat)
return;
#ifndef GUI
mprintf(St(MFileComment));
#endif
const int MaxSize=0x8000;
Array<char> CmtBuf(MaxSize);
SaveFilePos SavePos(*this);
Seek(CurBlockPos+SIZEOF_NEWLHD+NewLhd.NameSize,SEEK_SET);
int64 SaveCurBlockPos=CurBlockPos;
int64 SaveNextBlockPos=NextBlockPos;
size_t Size=ReadHeader();
CurBlockPos=SaveCurBlockPos;
NextBlockPos=SaveNextBlockPos;
if (Size<7 || CommHead.HeadType!=COMM_HEAD)
return;
if (CommHead.HeadCRC!=HeaderCRC)
{
#ifndef GUI
Log(FileName,St(MLogCommHead));
#endif
return;
}
if (CommHead.UnpVer < 15 || CommHead.UnpVer > UNP_VER ||
CommHead.Method > 0x30 || CommHead.UnpSize > MaxSize)
return;
Read(&CmtBuf[0],CommHead.UnpSize);
if (CommHead.CommCRC!=((~CRC(0xffffffff,&CmtBuf[0],CommHead.UnpSize)&0xffff)))
{
Log(FileName,St(MLogBrokFCmt));
}
else
{
OutComment(&CmtBuf[0],CommHead.UnpSize);
#ifndef GUI
mprintf("\n");
#endif
}
}
#endif
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