size_t Archive::ReadHeader15()
{
RawRead Raw(this);
bool Decrypt=Encrypted && CurBlockPos>(int64)SFXSize+SIZEOF_MARKHEAD3;
if (Decrypt)
{
#ifdef RAR_NOCRYPT // For rarext.dll and unrar_nocrypt.dll.
return 0;
#else
RequestArcPassword();
byte Salt[SIZE_SALT30];
if (Read(Salt,SIZE_SALT30)!=SIZE_SALT30)
{
UnexpEndArcMsg();
return 0;
}
HeadersCrypt.SetCryptKeys(false,CRYPT_RAR30,&Cmd->Password,Salt,NULL,0,NULL,NULL);
Raw.SetCrypt(&HeadersCrypt);
#endif
}
Raw.Read(SIZEOF_SHORTBLOCKHEAD);
if (Raw.Size()==0)
{
UnexpEndArcMsg();
return 0;
}
ShortBlock.HeadCRC=Raw.Get2();
ShortBlock.Reset();
uint HeaderType=Raw.Get1();
ShortBlock.Flags=Raw.Get2();
ShortBlock.SkipIfUnknown=(ShortBlock.Flags & SKIP_IF_UNKNOWN)!=0;
ShortBlock.HeadSize=Raw.Get2();
ShortBlock.HeaderType=(HEADER_TYPE)HeaderType;
if (ShortBlock.HeadSize<SIZEOF_SHORTBLOCKHEAD)
{
BrokenHeaderMsg();
return 0;
}
// For simpler further processing we map header types common
// for RAR 1.5 and 5.0 formats to RAR 5.0 values. It does not include
// header types specific for RAR 1.5 - 4.x only.
switch(ShortBlock.HeaderType)
{
case HEAD3_MAIN: ShortBlock.HeaderType=HEAD_MAIN; break;
case HEAD3_FILE: ShortBlock.HeaderType=HEAD_FILE; break;
case HEAD3_SERVICE: ShortBlock.HeaderType=HEAD_SERVICE; break;
case HEAD3_ENDARC: ShortBlock.HeaderType=HEAD_ENDARC; break;
}
CurHeaderType=ShortBlock.HeaderType;
if (ShortBlock.HeaderType==HEAD3_CMT)
{
// Old style (up to RAR 2.9) comment header embedded into main
// or file header. We must not read the entire ShortBlock.HeadSize here
// to not break the comment processing logic later.
Raw.Read(SIZEOF_COMMHEAD-SIZEOF_SHORTBLOCKHEAD);
}
else
if (ShortBlock.HeaderType==HEAD_MAIN && (ShortBlock.Flags & MHD_COMMENT)!=0)
{
// Old style (up to RAR 2.9) main archive comment embedded into
// the main archive header found. While we can read the entire
// ShortBlock.HeadSize here and remove this part of "if", it would be
// waste of memory, because we'll read and process this comment data
// in other function anyway and we do not need them here now.
Raw.Read(SIZEOF_MAINHEAD3-SIZEOF_SHORTBLOCKHEAD);
}
else
Raw.Read(ShortBlock.HeadSize-SIZEOF_SHORTBLOCKHEAD);
NextBlockPos=CurBlockPos+FullHeaderSize(ShortBlock.HeadSize);
switch(ShortBlock.HeaderType)
{
case HEAD_MAIN:
MainHead.Reset();
*(BaseBlock *)&MainHead=ShortBlock;
MainHead.HighPosAV=Raw.Get2();
MainHead.PosAV=Raw.Get4();
Volume=(MainHead.Flags & MHD_VOLUME)!=0;
Solid=(MainHead.Flags & MHD_SOLID)!=0;
Locked=(MainHead.Flags & MHD_LOCK)!=0;
Protected=(MainHead.Flags & MHD_PROTECT)!=0;
Encrypted=(MainHead.Flags & MHD_PASSWORD)!=0;
Signed=MainHead.PosAV!=0 || MainHead.HighPosAV!=0;
MainHead.CommentInHeader=(MainHead.Flags & MHD_COMMENT)!=0;
// Only for encrypted 3.0+ archives. 2.x archives did not have this
// flag, so for non-encrypted archives, we'll set it later based on
// file attributes.
FirstVolume=(MainHead.Flags & MHD_FIRSTVOLUME)!=0;
NewNumbering=(MainHead.Flags & MHD_NEWNUMBERING)!=0;
break;
case HEAD_FILE:
case HEAD_SERVICE:
{
bool FileBlock=ShortBlock.HeaderType==HEAD_FILE;
FileHeader *hd=FileBlock ? &FileHead:&SubHead;
hd->Reset();
*(BaseBlock *)hd=ShortBlock;
hd->SplitBefore=(hd->Flags & LHD_SPLIT_BEFORE)!=0;
hd->SplitAfter=(hd->Flags & LHD_SPLIT_AFTER)!=0;
hd->Encrypted=(hd->Flags & LHD_PASSWORD)!=0;
hd->SaltSet=(hd->Flags & LHD_SALT)!=0;
hd->Solid=FileBlock && (hd->Flags & LHD_SOLID)!=0;
hd->SubBlock=!FileBlock && (hd->Flags & LHD_SOLID)!=0;
hd->Dir=(hd->Flags & LHD_WINDOWMASK)==LHD_DIRECTORY;
hd->WinSize=hd->Dir ? 0:0x10000<<((hd->Flags & LHD_WINDOWMASK)>>5);
hd->CommentInHeader=(hd->Flags & LHD_COMMENT)!=0;
hd->Version=(hd->Flags & LHD_VERSION)!=0;
hd->DataSize=Raw.Get4();
uint LowUnpSize=Raw.Get4();
hd->HostOS=Raw.Get1();
hd->FileHash.Type=HASH_CRC32;
hd->FileHash.CRC32=Raw.Get4();
uint FileTime=Raw.Get4();
hd->UnpVer=Raw.Get1();
hd->Method=Raw.Get1()-0x30;
size_t NameSize=Raw.Get2();
hd->FileAttr=Raw.Get4();
hd->CryptMethod=CRYPT_NONE;
if (hd->Encrypted)
switch(hd->UnpVer)
{
case 13: hd->CryptMethod=CRYPT_RAR13; break;
case 15: hd->CryptMethod=CRYPT_RAR15; break;
case 20:
case 26: hd->CryptMethod=CRYPT_RAR20; break;
default: hd->CryptMethod=CRYPT_RAR30; break;
}
hd->HSType=HSYS_UNKNOWN;
if (hd->HostOS==HOST_UNIX || hd->HostOS==HOST_BEOS)
hd->HSType=HSYS_UNIX;
else
if (hd->HostOS<HOST_MAX)
hd->HSType=HSYS_WINDOWS;
hd->RedirType=FSREDIR_NONE;
// RAR 4.x Unix symlink.
if (hd->HostOS==HOST_UNIX && (hd->FileAttr & 0xF000)==0xA000)
{
hd->RedirType=FSREDIR_UNIXSYMLINK;
*hd->RedirName=0;
}
hd->Inherited=!FileBlock && (hd->SubFlags & SUBHEAD_FLAGS_INHERITED)!=0;
hd->LargeFile=(hd->Flags & LHD_LARGE)!=0;
uint HighPackSize,HighUnpSize;
if (hd->LargeFile)
{
HighPackSize=Raw.Get4();
HighUnpSize=Raw.Get4();
hd->UnknownUnpSize=(LowUnpSize==0xffffffff && HighUnpSize==0xffffffff);
}
else
{
HighPackSize=HighUnpSize=0;
// UnpSize equal to 0xffffffff without LHD_LARGE flag indicates
// that we do not know the unpacked file size and must unpack it
// until we find the end of file marker in compressed data.
hd->UnknownUnpSize=(LowUnpSize==0xffffffff);
}
hd->PackSize=INT32TO64(HighPackSize,hd->DataSize);
hd->UnpSize=INT32TO64(HighUnpSize,LowUnpSize);
if (hd->UnknownUnpSize)
hd->UnpSize=INT64NDF;
char FileName[NM*4];
size_t ReadNameSize=Min(NameSize,ASIZE(FileName)-1);
Raw.GetB((byte *)FileName,ReadNameSize);
FileName[ReadNameSize]=0;
if (FileBlock)
{
if ((hd->Flags & LHD_UNICODE)!=0)
{
EncodeFileName NameCoder;
size_t Length=strlen(FileName);
Length++;
NameCoder.Decode(FileName,(byte *)FileName+Length,
NameSize-Length,hd->FileName,
ASIZE(hd->FileName));
}
else
*hd->FileName=0;
char AnsiName[NM];
IntToExt(FileName,AnsiName,ASIZE(AnsiName));
GetWideName(AnsiName,hd->FileName,hd->FileName,ASIZE(hd->FileName));
#ifndef SFX_MODULE
ConvertNameCase(hd->FileName);
#endif
ConvertFileHeader(hd);
}
else
{
CharToWide(FileName,hd->FileName,ASIZE(hd->FileName));
// Calculate the size of optional data.
int DataSize=int(hd->HeadSize-NameSize-SIZEOF_FILEHEAD3);
if ((hd->Flags & LHD_SALT)!=0)
DataSize-=SIZE_SALT30;
if (DataSize>0)
{
// Here we read optional additional fields for subheaders.
// They are stored after the file name and before salt.
hd->SubData.Alloc(DataSize);
Raw.GetB(&hd->SubData[0],DataSize);
if (hd->CmpName(SUBHEAD_TYPE_RR))
{
byte *D=&hd->SubData[8];
RecoverySize=D[0]+((uint)D[1]<<8)+((uint)D[2]<<16)+((uint)D[3]<<24);
RecoverySize*=512; // Sectors to size.
int64 CurPos=Tell();
RecoveryPercent=ToPercent(RecoverySize,CurPos);
// Round fractional percent exceeding .5 to upper value.
if (ToPercent(RecoverySize+CurPos/200,CurPos)>RecoveryPercent)
RecoveryPercent++;
}
}
if (hd->CmpName(SUBHEAD_TYPE_CMT))
MainComment=true;
}
if ((hd->Flags & LHD_SALT)!=0)
Raw.GetB(hd->Salt,SIZE_SALT30);
hd->mtime.SetDos(FileTime);
if ((hd->Flags & LHD_EXTTIME)!=0)
{
ushort Flags=Raw.Get2();
RarTime *tbl[4];
tbl[0]=&FileHead.mtime;
tbl[1]=&FileHead.ctime;
tbl[2]=&FileHead.atime;
tbl[3]=NULL; // Archive time is not used now.
for (int I=0;I<4;I++)
{
RarTime *CurTime=tbl[I];
uint rmode=Flags>>(3-I)*4;
if ((rmode & 8)==0 || CurTime==NULL)
continue;
if (I!=0)
{
uint DosTime=Raw.Get4();
CurTime->SetDos(DosTime);
}
RarLocalTime rlt;
CurTime->GetLocal(&rlt);
if (rmode & 4)
rlt.Second++;
rlt.Reminder=0;
int count=rmode&3;
for (int J=0;J<count;J++)
{
byte CurByte=Raw.Get1();
rlt.Reminder|=(((uint)CurByte)<<((J+3-count)*8));
}
CurTime->SetLocal(&rlt);
}
}
NextBlockPos+=hd->PackSize;
bool CRCProcessedOnly=hd->CommentInHeader;
ushort HeaderCRC=Raw.GetCRC15(CRCProcessedOnly);
if (hd->HeadCRC!=HeaderCRC)
{
BrokenHeader=true;
ErrHandler.SetErrorCode(RARX_WARNING);
// If we have a broken encrypted header, we do not need to display
// the error message here, because it will be displayed for such
// headers later in this function. Also such headers are unlikely
// to have anything sensible in file name field, so it is useless
// to display the file name.
if (!Decrypt)
uiMsg(UIERROR_FHEADERBROKEN,Archive::FileName,hd->FileName);
}
}
break;
case HEAD_ENDARC:
*(BaseBlock *)&EndArcHead=ShortBlock;
EndArcHead.NextVolume=(EndArcHead.Flags & EARC_NEXT_VOLUME)!=0;
EndArcHead.DataCRC=(EndArcHead.Flags & EARC_DATACRC)!=0;
EndArcHead.RevSpace=(EndArcHead.Flags & EARC_REVSPACE)!=0;
EndArcHead.StoreVolNumber=(EndArcHead.Flags & EARC_VOLNUMBER)!=0;
if (EndArcHead.DataCRC)
EndArcHead.ArcDataCRC=Raw.Get4();
if (EndArcHead.StoreVolNumber)
VolNumber=EndArcHead.VolNumber=Raw.Get2();
break;
#ifndef SFX_MODULE
case HEAD3_CMT:
*(BaseBlock *)&CommHead=ShortBlock;
CommHead.UnpSize=Raw.Get2();
CommHead.UnpVer=Raw.Get1();
CommHead.Method=Raw.Get1();
CommHead.CommCRC=Raw.Get2();
break;
case HEAD3_SIGN:
*(BaseBlock *)&SignHead=ShortBlock;
SignHead.CreationTime=Raw.Get4();
SignHead.ArcNameSize=Raw.Get2();
SignHead.UserNameSize=Raw.Get2();
break;
case HEAD3_AV:
*(BaseBlock *)&AVHead=ShortBlock;
AVHead.UnpVer=Raw.Get1();
AVHead.Method=Raw.Get1();
AVHead.AVVer=Raw.Get1();
AVHead.AVInfoCRC=Raw.Get4();
break;
case HEAD3_PROTECT:
*(BaseBlock *)&ProtectHead=ShortBlock;
ProtectHead.DataSize=Raw.Get4();
ProtectHead.Version=Raw.Get1();
ProtectHead.RecSectors=Raw.Get2();
ProtectHead.TotalBlocks=Raw.Get4();
Raw.GetB(ProtectHead.Mark,8);
NextBlockPos+=ProtectHead.DataSize;
RecoverySize=ProtectHead.RecSectors*512;
break;
case HEAD3_OLDSERVICE:
*(BaseBlock *)&SubBlockHead=ShortBlock;
SubBlockHead.DataSize=Raw.Get4();
NextBlockPos+=SubBlockHead.DataSize;
SubBlockHead.SubType=Raw.Get2();
SubBlockHead.Level=Raw.Get1();
switch(SubBlockHead.SubType)
{
case UO_HEAD:
*(SubBlockHeader *)&UOHead=SubBlockHead;
UOHead.OwnerNameSize=Raw.Get2();
UOHead.GroupNameSize=Raw.Get2();
if (UOHead.OwnerNameSize>=ASIZE(UOHead.OwnerName))
UOHead.OwnerNameSize=ASIZE(UOHead.OwnerName)-1;
if (UOHead.GroupNameSize>=ASIZE(UOHead.GroupName))
UOHead.GroupNameSize=ASIZE(UOHead.GroupName)-1;
Raw.GetB(UOHead.OwnerName,UOHead.OwnerNameSize);
Raw.GetB(UOHead.GroupName,UOHead.GroupNameSize);
UOHead.OwnerName[UOHead.OwnerNameSize]=0;
UOHead.GroupName[UOHead.GroupNameSize]=0;
break;
case MAC_HEAD:
*(SubBlockHeader *)&MACHead=SubBlockHead;
MACHead.fileType=Raw.Get4();
MACHead.fileCreator=Raw.Get4();
break;
case EA_HEAD:
case BEEA_HEAD:
case NTACL_HEAD:
*(SubBlockHeader *)&EAHead=SubBlockHead;
EAHead.UnpSize=Raw.Get4();
EAHead.UnpVer=Raw.Get1();
EAHead.Method=Raw.Get1();
EAHead.EACRC=Raw.Get4();
break;
case STREAM_HEAD:
*(SubBlockHeader *)&StreamHead=SubBlockHead;
StreamHead.UnpSize=Raw.Get4();
StreamHead.UnpVer=Raw.Get1();
StreamHead.Method=Raw.Get1();
StreamHead.StreamCRC=Raw.Get4();
StreamHead.StreamNameSize=Raw.Get2();
if (StreamHead.StreamNameSize>=ASIZE(StreamHead.StreamName))
StreamHead.StreamNameSize=ASIZE(StreamHead.StreamName)-1;
Raw.GetB(StreamHead.StreamName,StreamHead.StreamNameSize);
StreamHead.StreamName[StreamHead.StreamNameSize]=0;
break;
}
break;
#endif
default:
if (ShortBlock.Flags & LONG_BLOCK)
NextBlockPos+=Raw.Get4();
break;
}
size_t Archive::ReadHeader()
{
// Once we failed to decrypt an encrypted block, there is no reason to
// attempt to do it further. We'll never be successful and only generate
// endless errors.
if (FailedHeaderDecryption)
return 0;
CurBlockPos=Tell();
#ifndef SFX_MODULE
if (OldFormat)
return(ReadOldHeader());
#endif
RawRead Raw(this);
bool Decrypt=Encrypted && CurBlockPos>=(int64)SFXSize+SIZEOF_MARKHEAD+SIZEOF_NEWMHD;
if (Decrypt)
{
#if defined(SHELL_EXT) || defined(RAR_NOCRYPT)
return(0);
#else
if (Read(HeadersSalt,SALT_SIZE)!=SALT_SIZE)
{
UnexpEndArcMsg();
return(0);
}
if (*Cmd->Password==0)
{
#ifdef RARDLL
char PasswordA[MAXPASSWORD];
if (Cmd->Callback==NULL ||
Cmd->Callback(UCM_NEEDPASSWORD,Cmd->UserData,(LPARAM)PasswordA,ASIZE(PasswordA))==-1)
{
Close();
//ErrHandler.Exit(USER_BREAK); original
ErrHandler.Exit(NO_PASSWORD_ERROR);
}
GetWideName(PasswordA,NULL,Cmd->Password,ASIZE(Cmd->Password));
#else
if (!GetPassword(PASSWORD_ARCHIVE,FileName,FileNameW,Cmd->Password,ASIZE(Cmd->Password)))
{
Close();
ErrHandler.Exit(USER_BREAK);
}
#endif
}
HeadersCrypt.SetCryptKeys(Cmd->Password,HeadersSalt,false,false,NewMhd.EncryptVer>=36);
Raw.SetCrypt(&HeadersCrypt);
#endif
}
Raw.Read(SIZEOF_SHORTBLOCKHEAD);
if (Raw.Size()==0)
{
UnexpEndArcMsg();
return(0);
}
Raw.Get(ShortBlock.HeadCRC);
byte HeadType;
Raw.Get(HeadType);
ShortBlock.HeadType=(HEADER_TYPE)HeadType;
Raw.Get(ShortBlock.Flags);
Raw.Get(ShortBlock.HeadSize);
if (ShortBlock.HeadSize<SIZEOF_SHORTBLOCKHEAD)
{
#ifndef SHELL_EXT
Log(FileName,St(MLogFileHead),"???");
#endif
BrokenFileHeader=true;
ErrHandler.SetErrorCode(CRC_ERROR);
return(0);
}
if (ShortBlock.HeadType==COMM_HEAD)
{
// Old style (up to RAR 2.9) comment header embedded into main
// or file header. We must not read the entire ShortBlock.HeadSize here
// to not break the comment processing logic later.
Raw.Read(SIZEOF_COMMHEAD-SIZEOF_SHORTBLOCKHEAD);
}
else
if (ShortBlock.HeadType==MAIN_HEAD && (ShortBlock.Flags & MHD_COMMENT)!=0)
{
// Old style (up to RAR 2.9) main archive comment embedded into
// the main archive header found. While we can read the entire
// ShortBlock.HeadSize here and remove this part of "if", it would be
// waste of memory, because we'll read and process this comment data
// in other function anyway and we do not need them here now.
Raw.Read(SIZEOF_NEWMHD-SIZEOF_SHORTBLOCKHEAD);
}
else
Raw.Read(ShortBlock.HeadSize-SIZEOF_SHORTBLOCKHEAD);
NextBlockPos=CurBlockPos+ShortBlock.HeadSize;
switch(ShortBlock.HeadType)
{
case MAIN_HEAD:
*(BaseBlock *)&NewMhd=ShortBlock;
Raw.Get(NewMhd.HighPosAV);
Raw.Get(NewMhd.PosAV);
if (NewMhd.Flags & MHD_ENCRYPTVER)
Raw.Get(NewMhd.EncryptVer);
break;
case ENDARC_HEAD:
*(BaseBlock *)&EndArcHead=ShortBlock;
if (EndArcHead.Flags & EARC_DATACRC)
Raw.Get(EndArcHead.ArcDataCRC);
if (EndArcHead.Flags & EARC_VOLNUMBER)
Raw.Get(EndArcHead.VolNumber);
break;
case FILE_HEAD:
case NEWSUB_HEAD:
{
FileHeader *hd=ShortBlock.HeadType==FILE_HEAD ? &NewLhd:&SubHead;
*(BaseBlock *)hd=ShortBlock;
Raw.Get(hd->PackSize);
Raw.Get(hd->UnpSize);
Raw.Get(hd->HostOS);
Raw.Get(hd->FileCRC);
Raw.Get(hd->FileTime);
Raw.Get(hd->UnpVer);
Raw.Get(hd->Method);
Raw.Get(hd->NameSize);
Raw.Get(hd->FileAttr);
if (hd->Flags & LHD_LARGE)
{
Raw.Get(hd->HighPackSize);
Raw.Get(hd->HighUnpSize);
}
else
{
hd->HighPackSize=hd->HighUnpSize=0;
if (hd->UnpSize==0xffffffff)
{
// UnpSize equal to 0xffffffff without LHD_LARGE flag indicates
// that we do not know the unpacked file size and must unpack it
// until we find the end of file marker in compressed data.
hd->UnpSize=(uint)(INT64NDF);
hd->HighUnpSize=(uint)(INT64NDF>>32);
}
}
hd->FullPackSize=INT32TO64(hd->HighPackSize,hd->PackSize);
hd->FullUnpSize=INT32TO64(hd->HighUnpSize,hd->UnpSize);
char FileName[NM*4];
size_t NameSize=Min(hd->NameSize,sizeof(FileName)-1);
Raw.Get((byte *)FileName,NameSize);
FileName[NameSize]=0;
strncpyz(hd->FileName,FileName,ASIZE(hd->FileName));
if (hd->HeadType==NEWSUB_HEAD)
{
// Let's calculate the size of optional data.
int DataSize=hd->HeadSize-hd->NameSize-SIZEOF_NEWLHD;
if (hd->Flags & LHD_SALT)
DataSize-=SALT_SIZE;
if (DataSize>0)
{
// Here we read optional additional fields for subheaders.
// They are stored after the file name and before salt.
hd->SubData.Alloc(DataSize);
Raw.Get(&hd->SubData[0],DataSize);
if (hd->CmpName(SUBHEAD_TYPE_RR))
{
byte *D=&hd->SubData[8];
RecoverySectors=D[0]+((uint)D[1]<<8)+((uint)D[2]<<16)+((uint)D[3]<<24);
}
}
}
else
if (hd->HeadType==FILE_HEAD)
{
if (hd->Flags & LHD_UNICODE)
{
EncodeFileName NameCoder;
size_t Length=strlen(FileName);
if (Length==hd->NameSize)
{
UtfToWide(FileName,hd->FileNameW,sizeof(hd->FileNameW)/sizeof(hd->FileNameW[0])-1);
WideToChar(hd->FileNameW,hd->FileName,sizeof(hd->FileName)/sizeof(hd->FileName[0])-1);
ExtToInt(hd->FileName,hd->FileName);
}
else
{
Length++;
NameCoder.Decode(FileName,(byte *)FileName+Length,
hd->NameSize-Length,hd->FileNameW,
sizeof(hd->FileNameW)/sizeof(hd->FileNameW[0]));
}
if (*hd->FileNameW==0)
hd->Flags &= ~LHD_UNICODE;
}
else
*hd->FileNameW=0;
#ifndef SFX_MODULE
ConvertNameCase(hd->FileName);
ConvertNameCase(hd->FileNameW);
#endif
ConvertUnknownHeader();
}
if (hd->Flags & LHD_SALT)
Raw.Get(hd->Salt,SALT_SIZE);
hd->mtime.SetDos(hd->FileTime);
hd->ctime.Reset();
hd->atime.Reset();
hd->arctime.Reset();
if (hd->Flags & LHD_EXTTIME)
{
ushort Flags;
Raw.Get(Flags);
RarTime *tbl[4];
tbl[0]=&NewLhd.mtime;
tbl[1]=&NewLhd.ctime;
tbl[2]=&NewLhd.atime;
tbl[3]=&NewLhd.arctime;
for (int I=0;I<4;I++)
{
RarTime *CurTime=tbl[I];
uint rmode=Flags>>(3-I)*4;
if ((rmode & 8)==0)
continue;
if (I!=0)
{
uint DosTime;
Raw.Get(DosTime);
CurTime->SetDos(DosTime);
}
RarLocalTime rlt;
CurTime->GetLocal(&rlt);
if (rmode & 4)
rlt.Second++;
rlt.Reminder=0;
int count=rmode&3;
for (int J=0;J<count;J++)
{
byte CurByte;
Raw.Get(CurByte);
rlt.Reminder|=(((uint)CurByte)<<((J+3-count)*8));
}
CurTime->SetLocal(&rlt);
}
}
NextBlockPos+=hd->FullPackSize;
bool CRCProcessedOnly=(hd->Flags & LHD_COMMENT)!=0;
HeaderCRC=~Raw.GetCRC(CRCProcessedOnly)&0xffff;
if (hd->HeadCRC!=HeaderCRC)
{
if (hd->HeadType==NEWSUB_HEAD && strlen(hd->FileName)<ASIZE(hd->FileName)-5)
strcat(hd->FileName,"- ???");
BrokenFileHeader=true;
ErrHandler.SetErrorCode(WARNING);
// If we have a broken encrypted header, we do not need to display
// the error message here, because it will be displayed for such
// headers later in this function. Also such headers are unlikely
// to have anything sensible in file name field, so it is useless
// to display the file name.
bool EncBroken=Decrypt && ShortBlock.HeadCRC!=(~Raw.GetCRC(false)&0xffff);
if (!EncBroken)
{
#ifndef SHELL_EXT
Log(Archive::FileName,St(MLogFileHead),IntNameToExt(hd->FileName));
Alarm();
#endif
}
}
}
int Archive::ReadHeader()
{
CurBlockPos=Tell();
#ifndef SFX_MODULE
if (OldFormat)
return(ReadOldHeader());
#endif
RawRead Raw(this);
bool Decrypt=Encrypted && CurBlockPos>=SFXSize+SIZEOF_MARKHEAD+SIZEOF_NEWMHD;
if (Decrypt)
{
#if defined(SHELL_EXT) || defined(NOCRYPT)
return(0);
#else
if (Read(HeadersSalt,SALT_SIZE)!=SALT_SIZE)
return(0);
if (*Cmd->Password==0)
#ifdef RARDLL
if (Cmd->Callback==NULL ||
Cmd->Callback(UCM_NEEDPASSWORD,Cmd->UserData,(LPARAM)Cmd->Password,sizeof(Cmd->Password))==-1)
{
Close();
ErrHandler.Exit(USER_BREAK);
}
#else
if (!GetPassword(PASSWORD_ARCHIVE,FileName,Cmd->Password,sizeof(Cmd->Password)))
{
Close();
ErrHandler.Exit(USER_BREAK);
}
#endif
HeadersCrypt.SetCryptKeys(Cmd->Password,HeadersSalt,false,false,NewMhd.EncryptVer>=36);
Raw.SetCrypt(&HeadersCrypt);
#endif
}
Raw.Read(SIZEOF_SHORTBLOCKHEAD);
if (Raw.Size()==0)
{
Int64 ArcSize=FileLength();
if (CurBlockPos>ArcSize || NextBlockPos>ArcSize)
{
#ifndef SHELL_EXT
Log(FileName,St(MLogUnexpEOF));
#endif
ErrHandler.SetErrorCode(WARNING);
}
return(0);
}
Raw.Get(ShortBlock.HeadCRC);
byte HeadType;
Raw.Get(HeadType);
ShortBlock.HeadType=(HEADER_TYPE)HeadType;
Raw.Get(ShortBlock.Flags);
Raw.Get(ShortBlock.HeadSize);
if (ShortBlock.HeadSize<SIZEOF_SHORTBLOCKHEAD)
{
#ifndef SHELL_EXT
Log(FileName,St(MLogFileHead),"???");
#endif
BrokenFileHeader=true;
ErrHandler.SetErrorCode(CRC_ERROR);
return(0);
}
if (ShortBlock.HeadType==COMM_HEAD)
Raw.Read(SIZEOF_COMMHEAD-SIZEOF_SHORTBLOCKHEAD);
else
if (ShortBlock.HeadType==MAIN_HEAD && (ShortBlock.Flags & MHD_COMMENT)!=0)
Raw.Read(SIZEOF_NEWMHD-SIZEOF_SHORTBLOCKHEAD);
else
Raw.Read(ShortBlock.HeadSize-SIZEOF_SHORTBLOCKHEAD);
NextBlockPos=CurBlockPos+ShortBlock.HeadSize;
switch(ShortBlock.HeadType)
{
case MAIN_HEAD:
*(BaseBlock *)&NewMhd=ShortBlock;
Raw.Get(NewMhd.HighPosAV);
Raw.Get(NewMhd.PosAV);
if (NewMhd.Flags & MHD_ENCRYPTVER)
Raw.Get(NewMhd.EncryptVer);
break;
case ENDARC_HEAD:
*(BaseBlock *)&EndArcHead=ShortBlock;
if (EndArcHead.Flags & EARC_DATACRC)
Raw.Get(EndArcHead.ArcDataCRC);
if (EndArcHead.Flags & EARC_VOLNUMBER)
Raw.Get(EndArcHead.VolNumber);
break;
case FILE_HEAD:
case NEWSUB_HEAD:
{
FileHeader *hd=ShortBlock.HeadType==FILE_HEAD ? &NewLhd:&SubHead;
*(BaseBlock *)hd=ShortBlock;
Raw.Get(hd->PackSize);
Raw.Get(hd->UnpSize);
Raw.Get(hd->HostOS);
Raw.Get(hd->FileCRC);
Raw.Get(hd->FileTime);
Raw.Get(hd->UnpVer);
Raw.Get(hd->Method);
Raw.Get(hd->NameSize);
Raw.Get(hd->FileAttr);
if (hd->Flags & LHD_LARGE)
{
Raw.Get(hd->HighPackSize);
Raw.Get(hd->HighUnpSize);
}
else
{
hd->HighPackSize=hd->HighUnpSize=0;
if (hd->UnpSize==0xffffffff)
{
hd->UnpSize=int64to32(INT64MAX);
hd->HighUnpSize=int64to32(INT64MAX>>32);
}
}
hd->FullPackSize=int32to64(hd->HighPackSize,hd->PackSize);
hd->FullUnpSize=int32to64(hd->HighUnpSize,hd->UnpSize);
char FileName[NM*4];
int NameSize=Min(hd->NameSize,sizeof(FileName)-1);
Raw.Get((byte *)FileName,NameSize);
FileName[NameSize]=0;
strncpyz(hd->FileName,FileName,ASIZE(hd->FileName));
if (hd->HeadType==NEWSUB_HEAD)
{
int DataSize=hd->HeadSize-hd->NameSize-SIZEOF_NEWLHD;
if (hd->Flags & LHD_SALT)
DataSize-=SALT_SIZE;
if (DataSize>0)
{
hd->SubData.Alloc(DataSize);
Raw.Get(&hd->SubData[0],DataSize);
if (hd->CmpName(SUBHEAD_TYPE_RR))
{
byte *D=&hd->SubData[8];
RecoverySectors=D[0]+((uint)D[1]<<8)+((uint)D[2]<<16)+((uint)D[3]<<24);
}
}
}
else
if (hd->HeadType==FILE_HEAD)
{
if (hd->Flags & LHD_UNICODE)
{
EncodeFileName NameCoder;
int Length=strlen(FileName);
if (Length==hd->NameSize)
{
UtfToWide(FileName,hd->FileNameW,sizeof(hd->FileNameW)/sizeof(hd->FileNameW[0])-1);
WideToChar(hd->FileNameW,hd->FileName,sizeof(hd->FileName)/sizeof(hd->FileName[0])-1);
ExtToInt(hd->FileName,hd->FileName);
}
else
{
Length++;
NameCoder.Decode(FileName,(byte *)FileName+Length,
hd->NameSize-Length,hd->FileNameW,
sizeof(hd->FileNameW)/sizeof(hd->FileNameW[0]));
}
if (*hd->FileNameW==0)
hd->Flags &= ~LHD_UNICODE;
}
else
*hd->FileNameW=0;
#ifndef SFX_MODULE
ConvertNameCase(hd->FileName);
ConvertNameCase(hd->FileNameW);
#endif
ConvertUnknownHeader();
}
if (hd->Flags & LHD_SALT)
Raw.Get(hd->Salt,SALT_SIZE);
hd->mtime.SetDos(hd->FileTime);
hd->ctime.Reset();
hd->atime.Reset();
hd->arctime.Reset();
if (hd->Flags & LHD_EXTTIME)
{
ushort Flags;
Raw.Get(Flags);
RarTime *tbl[4];
tbl[0]=&NewLhd.mtime;
tbl[1]=&NewLhd.ctime;
tbl[2]=&NewLhd.atime;
tbl[3]=&NewLhd.arctime;
for (int I=0;I<4;I++)
{
RarTime *CurTime=tbl[I];
uint rmode=Flags>>(3-I)*4;
if ((rmode & 8)==0)
continue;
if (I!=0)
{
uint DosTime;
Raw.Get(DosTime);
CurTime->SetDos(DosTime);
}
RarLocalTime rlt;
CurTime->GetLocal(&rlt);
if (rmode & 4)
rlt.Second++;
rlt.Reminder=0;
int count=rmode&3;
for (int J=0;J<count;J++)
{
byte CurByte;
Raw.Get(CurByte);
rlt.Reminder|=(((uint)CurByte)<<((J+3-count)*8));
}
CurTime->SetLocal(&rlt);
}
}
NextBlockPos+=hd->FullPackSize;
bool CRCProcessedOnly=(hd->Flags & LHD_COMMENT)!=0;
HeaderCRC=~Raw.GetCRC(CRCProcessedOnly)&0xffff;
if (hd->HeadCRC!=HeaderCRC)
{
if (hd->HeadType==NEWSUB_HEAD)
strcat(hd->FileName,"- ???");
BrokenFileHeader=true;
ErrHandler.SetErrorCode(WARNING);
#ifndef SHELL_EXT
Log(Archive::FileName,St(MLogFileHead),IntNameToExt(hd->FileName));
Alarm();
#endif
}
}
int Archive::ReadHeader()
{
CurBlockPos=Tell();
#ifndef SFX_MODULE
if (OldFormat)
return(ReadOldHeader());
#endif
RawRead Raw(this);
bool Decrypt=Encrypted && CurBlockPos>=SFXSize+SIZEOF_MARKHEAD+SIZEOF_NEWMHD;
if (Decrypt)
{
#if defined(SHELL_EXT) || defined(NOCRYPT)
return(0);
#else
if (Read(HeadersSalt,SALT_SIZE)!=SALT_SIZE)
return(0);
if (*Cmd->Password==0)
#ifdef RARDLL
if (Cmd->Callback==NULL ||
Cmd->Callback(UCM_NEEDPASSWORD,Cmd->UserData,(LONG)Cmd->Password,sizeof(Cmd->Password))==-1)
{
Close();
ErrHandler.Exit(USER_BREAK);
}
#else
if (!GetPassword(PASSWORD_ARCHIVE,FileName,Cmd->Password,sizeof(Cmd->Password)))
{
Close();
ErrHandler.Exit(USER_BREAK);
}
#endif
HeadersCrypt.SetCryptKeys(Cmd->Password,HeadersSalt,false);
Raw.SetCrypt(&HeadersCrypt);
#endif
}
Raw.Read(SIZEOF_SHORTBLOCKHEAD);
if (Raw.Size()==0)
{
Int64 ArcSize=FileLength();
if (CurBlockPos>ArcSize || NextBlockPos>ArcSize)
{
#ifndef SHELL_EXT
Log(FileName,St(MLogUnexpEOF));
#endif
ErrHandler.SetErrorCode(WARNING);
}
return(0);
}
Raw.Get(ShortBlock.HeadCRC);
unsigned char HeadType;
Raw.Get(HeadType);
ShortBlock.HeadType=(HEADER_TYPE)HeadType;
Raw.Get(ShortBlock.Flags);
Raw.Get(ShortBlock.HeadSize);
if (ShortBlock.HeadSize<SIZEOF_SHORTBLOCKHEAD)
{
#ifndef SHELL_EXT
Log(FileName,St(MLogFileHead),"???");
#endif
BrokenFileHeader=true;
ErrHandler.SetErrorCode(CRC_ERROR);
return(0);
}
if (ShortBlock.HeadType==COMM_HEAD)
Raw.Read(SIZEOF_COMMHEAD-SIZEOF_SHORTBLOCKHEAD);
else
if (ShortBlock.HeadType==MAIN_HEAD && (ShortBlock.Flags & MHD_COMMENT)!=0)
Raw.Read(SIZEOF_NEWMHD-SIZEOF_SHORTBLOCKHEAD);
else
Raw.Read(ShortBlock.HeadSize-SIZEOF_SHORTBLOCKHEAD);
NextBlockPos=CurBlockPos+ShortBlock.HeadSize;
switch(ShortBlock.HeadType)
{
case MAIN_HEAD:
*(BaseBlock *)&NewMhd=ShortBlock;
Raw.Get(NewMhd.HighPosAV);
Raw.Get(NewMhd.PosAV);
break;
case ENDARC_HEAD:
*(BaseBlock *)&EndArcHead=ShortBlock;
if (EndArcHead.Flags & EARC_DATACRC)
Raw.Get(EndArcHead.ArcDataCRC);
break;
case FILE_HEAD:
case NEWSUB_HEAD:
{
FileHeader *hd=ShortBlock.HeadType==FILE_HEAD ? &NewLhd:&SubHead;
*(BaseBlock *)hd=ShortBlock;
Raw.Get(hd->PackSize);
Raw.Get(hd->UnpSize);
Raw.Get(hd->HostOS);
Raw.Get(hd->FileCRC);
Raw.Get(hd->FileTime);
Raw.Get(hd->UnpVer);
Raw.Get(hd->Method);
Raw.Get(hd->NameSize);
Raw.Get(hd->FileAttr);
if (hd->Flags & LHD_LARGE)
{
Raw.Get(hd->HighPackSize);
Raw.Get(hd->HighUnpSize);
}
else
hd->HighPackSize=hd->HighUnpSize=0;
hd->FullPackSize=int32to64(hd->HighPackSize,hd->PackSize);
hd->FullUnpSize=int32to64(hd->HighUnpSize,hd->UnpSize);
char FileName[NM*4];
int NameSize=Min(hd->NameSize,sizeof(FileName)-1);
Raw.Get((unsigned char *)FileName,NameSize);
FileName[NameSize]=0;
strncpy(hd->FileName,FileName,sizeof(hd->FileName));
hd->FileName[sizeof(hd->FileName)-1]=0;
if (hd->HeadType==NEWSUB_HEAD)
{
int DataSize=hd->HeadSize-hd->NameSize-SIZEOF_NEWLHD;
if (hd->Flags & LHD_SALT)
DataSize-=SALT_SIZE;
if (DataSize>0)
{
hd->SubData.Alloc(DataSize);
Raw.Get(&hd->SubData[0],DataSize);
if (hd->CmpName(SUBHEAD_TYPE_RR))
{
unsigned char *D=&hd->SubData[8];
RecoverySectors=D[0]+((unsigned int)D[1]<<8)+((unsigned int)D[2]<<16)+((unsigned int)D[3]<<24);
}
}
}
else
if (hd->HeadType==FILE_HEAD)
{
if (hd->Flags & LHD_UNICODE)
{
EncodeFileName NameCoder;
int Length=strlen(FileName)+1;
NameCoder.Decode(FileName,(unsigned char *)FileName+Length,
hd->NameSize-Length,hd->FileNameW,
sizeof(hd->FileNameW)/sizeof(hd->FileNameW[0]));
if (*hd->FileNameW==0)
hd->Flags &= ~LHD_UNICODE;
}
else
*hd->FileNameW=0;
#ifndef SFX_MODULE
ConvertNameCase(hd->FileName);
ConvertNameCase(hd->FileNameW);
#endif
ConvertUnknownHeader();
}
if (hd->Flags & LHD_SALT)
Raw.Get(hd->Salt,SALT_SIZE);
hd->mtime.SetDos(hd->FileTime);
hd->ctime.Reset();
hd->atime.Reset();
hd->arctime.Reset();
if (hd->Flags & LHD_EXTTIME)
{
unsigned short Flags;
Raw.Get(Flags);
RarTime *tbl[4];
tbl[0]=&NewLhd.mtime;
tbl[1]=&NewLhd.ctime;
tbl[2]=&NewLhd.atime;
tbl[3]=&NewLhd.arctime;
for (int I=0;I<4;I++)
{
RarTime *CurTime=tbl[I];
unsigned int rmode=Flags>>(3-I)*4;
if ((rmode & 8)==0)
continue;
if (I!=0)
{
unsigned int DosTime;
Raw.Get(DosTime);
CurTime->SetDos(DosTime);
}
RarLocalTime rlt;
CurTime->GetLocal(&rlt);
if (rmode & 4)
rlt.Second++;
rlt.Reminder=0;
int count=rmode&3;
for (int J=0;J<count;J++)
{
unsigned char CurByte;
Raw.Get(CurByte);
rlt.Reminder|=(((unsigned int)CurByte)<<((J+3-count)*8));
}
CurTime->SetLocal(&rlt);
}
}
NextBlockPos+=hd->FullPackSize;
bool CRCProcessedOnly=(hd->Flags & LHD_COMMENT)!=0;
HeaderCRC=~Raw.GetCRC(CRCProcessedOnly)&0xffff;
if (hd->HeadCRC!=HeaderCRC)
{
if (hd->HeadType==NEWSUB_HEAD)
strcat(hd->FileName,"- ???");
BrokenFileHeader=true;
ErrHandler.SetErrorCode(WARNING);
#ifndef SHELL_EXT
Log(Archive::FileName,St(MLogFileHead),IntNameToExt(hd->FileName));
Alarm();
#endif
}
}
break;
#ifndef SFX_MODULE
case COMM_HEAD:
*(BaseBlock *)&CommHead=ShortBlock;
Raw.Get(CommHead.UnpSize);
Raw.Get(CommHead.UnpVer);
Raw.Get(CommHead.Method);
Raw.Get(CommHead.CommCRC);
break;
case SIGN_HEAD:
*(BaseBlock *)&SignHead=ShortBlock;
Raw.Get(SignHead.CreationTime);
Raw.Get(SignHead.ArcNameSize);
Raw.Get(SignHead.UserNameSize);
break;
case AV_HEAD:
*(BaseBlock *)&AVHead=ShortBlock;
Raw.Get(AVHead.UnpVer);
Raw.Get(AVHead.Method);
Raw.Get(AVHead.AVVer);
Raw.Get(AVHead.AVInfoCRC);
break;
case PROTECT_HEAD:
*(BaseBlock *)&ProtectHead=ShortBlock;
Raw.Get(ProtectHead.DataSize);
Raw.Get(ProtectHead.Version);
Raw.Get(ProtectHead.RecSectors);
Raw.Get(ProtectHead.TotalBlocks);
Raw.Get(ProtectHead.Mark,8);
NextBlockPos+=ProtectHead.DataSize;
RecoverySectors=ProtectHead.RecSectors;
break;
case SUB_HEAD:
*(BaseBlock *)&SubBlockHead=ShortBlock;
Raw.Get(SubBlockHead.DataSize);
NextBlockPos+=SubBlockHead.DataSize;
Raw.Get(SubBlockHead.SubType);
Raw.Get(SubBlockHead.Level);
switch(SubBlockHead.SubType)
{
case UO_HEAD:
*(SubBlockHeader *)&UOHead=SubBlockHead;
Raw.Get(UOHead.OwnerNameSize);
Raw.Get(UOHead.GroupNameSize);
Raw.Get((unsigned char *)UOHead.OwnerName,UOHead.OwnerNameSize);
Raw.Get((unsigned char *)UOHead.GroupName,UOHead.GroupNameSize);
if (UOHead.OwnerNameSize>NM-1)
UOHead.OwnerNameSize=NM-1;
if (UOHead.GroupNameSize>NM-1)
UOHead.GroupNameSize=NM-1;
UOHead.OwnerName[UOHead.OwnerNameSize]=0;
UOHead.GroupName[UOHead.GroupNameSize]=0;
break;
case MAC_HEAD:
*(SubBlockHeader *)&MACHead=SubBlockHead;
Raw.Get(MACHead.fileType);
Raw.Get(MACHead.fileCreator);
break;
case EA_HEAD:
case BEEA_HEAD:
case NTACL_HEAD:
*(SubBlockHeader *)&EAHead=SubBlockHead;
Raw.Get(EAHead.UnpSize);
Raw.Get(EAHead.UnpVer);
Raw.Get(EAHead.Method);
Raw.Get(EAHead.EACRC);
break;
case STREAM_HEAD:
*(SubBlockHeader *)&StreamHead=SubBlockHead;
Raw.Get(StreamHead.UnpSize);
Raw.Get(StreamHead.UnpVer);
Raw.Get(StreamHead.Method);
Raw.Get(StreamHead.StreamCRC);
Raw.Get(StreamHead.StreamNameSize);
if (StreamHead.StreamNameSize>NM-1)
StreamHead.StreamNameSize=NM-1;
Raw.Get((unsigned char *)StreamHead.StreamName,StreamHead.StreamNameSize);
StreamHead.StreamName[StreamHead.StreamNameSize]=0;
break;
}
break;
#endif
default:
if (ShortBlock.Flags & LONG_BLOCK)
{
unsigned int DataSize;
Raw.Get(DataSize);
NextBlockPos+=DataSize;
}
break;
}
