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static bool IsAnsiEscComment(const wchar *Data,size_t Size);
bool Archive::GetComment(Array<wchar> *CmtData)
{
if (!MainComment)
return false;
SaveFilePos SavePos(*this);
#ifndef SFX_MODULE
ushort CmtLength;
if (Format==RARFMT14)
{
Seek(SFXSize+SIZEOF_MAINHEAD14,SEEK_SET);
CmtLength=GetByte();
CmtLength+=(GetByte()<<8);
}
else
#endif
{
if (MainHead.CommentInHeader)
{
// Old style (RAR 2.9) archive comment embedded into the main
// archive header.
Seek(SFXSize+SIZEOF_MARKHEAD3+SIZEOF_MAINHEAD3,SEEK_SET);
ReadHeader();
}
else
{
// Current (RAR 3.0+) version of archive comment.
Seek(GetStartPos(),SEEK_SET);
return SearchSubBlock(SUBHEAD_TYPE_CMT)!=0 && ReadCommentData(CmtData);
}
#ifndef SFX_MODULE
// Old style (RAR 2.9) comment header embedded into the main
// archive header.
if (BrokenHeader)
{
uiMsg(UIERROR_CMTBROKEN,FileName);
return false;
}
CmtLength=CommHead.HeadSize-SIZEOF_COMMHEAD;
#endif
}
#ifndef SFX_MODULE
if (Format==RARFMT14 && MainHead.PackComment || Format!=RARFMT14 && CommHead.Method!=0x30)
{
if (Format!=RARFMT14 && (CommHead.UnpVer < 15 || CommHead.UnpVer > VER_UNPACK || CommHead.Method > 0x35))
return false;
ComprDataIO DataIO;
DataIO.SetTestMode(true);
uint UnpCmtLength;
if (Format==RARFMT14)
{
#ifdef RAR_NOCRYPT
return(false);
#else
UnpCmtLength=GetByte();
UnpCmtLength+=(GetByte()<<8);
CmtLength-=2;
DataIO.SetCmt13Encryption();
CommHead.UnpVer=15;
#endif
}
else
UnpCmtLength=CommHead.UnpSize;
DataIO.SetFiles(this,NULL);
DataIO.EnableShowProgress(false);
DataIO.SetPackedSizeToRead(CmtLength);
DataIO.UnpHash.Init(HASH_CRC32,1);
Unpack CmtUnpack(&DataIO);
CmtUnpack.Init(0x10000,false);
CmtUnpack.SetDestSize(UnpCmtLength);
CmtUnpack.DoUnpack(CommHead.UnpVer,false);
if (Format!=RARFMT14 && (DataIO.UnpHash.GetCRC32()&0xffff)!=CommHead.CommCRC)
{
uiMsg(UIERROR_CMTBROKEN,FileName);
return false;
}
else
{
byte *UnpData;
size_t UnpDataSize;
DataIO.GetUnpackedData(&UnpData,&UnpDataSize);
#ifdef _WIN_ALL
// If we ever decide to extend it to Android, we'll need to alloc
// 4x memory for OEM to UTF-8 output here.
OemToCharBuffA((char *)UnpData,(char *)UnpData,(DWORD)UnpDataSize);
#endif
CmtData->Alloc(UnpDataSize+1);
memset(CmtData->Addr(0),0,CmtData->Size()*sizeof(wchar));
CharToWide((char *)UnpData,CmtData->Addr(0),CmtData->Size());
CmtData->Alloc(wcslen(CmtData->Addr(0)));
}
}
else
{
Array<byte> CmtRaw(CmtLength);
Read(&CmtRaw[0],CmtLength);
if (Format!=RARFMT14 && CommHead.CommCRC!=(~CRC32(0xffffffff,&CmtRaw[0],CmtLength)&0xffff))
{
uiMsg(UIERROR_CMTBROKEN,FileName);
return false;
}
CmtData->Alloc(CmtLength+1);
CmtRaw.Push(0);
#ifdef _WIN_ALL
// If we ever decide to extend it to Android, we'll need to alloc
// 4x memory for OEM to UTF-8 output here.
OemToCharA((char *)&CmtRaw[0],(char *)&CmtRaw[0]);
#endif
CharToWide((char *)&CmtRaw[0],CmtData->Addr(0),CmtLength);
CmtData->Alloc(wcslen(CmtData->Addr(0)));
}
#endif
return CmtData->Size() > 0;
}
bool Archive::ReadCommentData(Array<wchar> *CmtData)
{
Array<byte> CmtRaw;
if (!ReadSubData(&CmtRaw,NULL))
return false;
size_t CmtSize=CmtRaw.Size();
CmtRaw.Push(0);
CmtData->Alloc(CmtSize+1);
if (Format==RARFMT50)
UtfToWide((char *)&CmtRaw[0],CmtData->Addr(0),CmtData->Size());
else
if ((SubHead.SubFlags & SUBHEAD_FLAGS_CMT_UNICODE)!=0)
{
RawToWide(&CmtRaw[0],CmtData->Addr(0),CmtSize/2);
(*CmtData)[CmtSize/2]=0;
}
else
{
CharToWide((char *)&CmtRaw[0],CmtData->Addr(0),CmtData->Size());
}
CmtData->Alloc(wcslen(CmtData->Addr(0))); // Set buffer size to actual comment length.
return true;
}
void Archive::ViewComment()
{
if (Cmd->DisableComment)
return;
Array<wchar> CmtBuf;
if (GetComment(&CmtBuf)) // In GUI too, so "Test" command detects broken comments.
{
size_t CmtSize=CmtBuf.Size();
wchar *ChPtr=wcschr(&CmtBuf[0],0x1A);
if (ChPtr!=NULL)
CmtSize=ChPtr-&CmtBuf[0];
mprintf(L"\n");
OutComment(&CmtBuf[0],CmtSize);
}
}