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QuietUnrar/libunrar/volume.cpp

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#include "rar.hpp"
#ifdef RARDLL
static bool DllVolChange(RAROptions *Cmd,wchar *NextName,size_t NameSize);
static bool DllVolNotify(RAROptions *Cmd,wchar *NextName);
#endif
bool MergeArchive(Archive &Arc,ComprDataIO *DataIO,bool ShowFileName,wchar Command)
{
RAROptions *Cmd=Arc.GetRAROptions();
HEADER_TYPE HeaderType=Arc.GetHeaderType();
FileHeader *hd=HeaderType==HEAD_SERVICE ? &Arc.SubHead:&Arc.FileHead;
bool SplitHeader=(HeaderType==HEAD_FILE || HeaderType==HEAD_SERVICE) &&
hd->SplitAfter;
if (DataIO!=NULL && SplitHeader)
{
bool PackedHashPresent=Arc.Format==RARFMT50 ||
hd->UnpVer>=20 && hd->FileHash.CRC32!=0xffffffff;
if (PackedHashPresent &&
!DataIO->PackedDataHash.Cmp(&hd->FileHash,hd->UseHashKey ? hd->HashKey:NULL))
uiMsg(UIERROR_CHECKSUMPACKED, Arc.FileName, hd->FileName);
}
int64 PosBeforeClose=Arc.Tell();
if (DataIO!=NULL)
DataIO->ProcessedArcSize+=Arc.FileLength();
Arc.Close();
wchar NextName[NM];
wcsncpyz(NextName,Arc.FileName,ASIZE(NextName));
NextVolumeName(NextName,ASIZE(NextName),!Arc.NewNumbering);
#if !defined(SFX_MODULE) && !defined(RARDLL)
bool RecoveryDone=false;
#endif
bool FailedOpen=false,OldSchemeTested=false;
#if !defined(SILENT)
// In -vp mode we force the pause before next volume even if it is present
// and even if we are on the hard disk. It is important when user does not
// want to process partially downloaded volumes preliminary.
if (Cmd->VolumePause && !uiAskNextVolume(NextName,ASIZE(NextName)))
FailedOpen=true;
#endif
uint OpenMode = Cmd->OpenShared ? FMF_OPENSHARED : 0;
if (!FailedOpen)
while (!Arc.Open(NextName,OpenMode))
{
// We need to open a new volume which size was not calculated
// in total size before, so we cannot calculate the total progress
// anymore. Let's reset the total size to zero and stop
// the total progress.
if (DataIO!=NULL)
DataIO->TotalArcSize=0;
if (!OldSchemeTested)
{
// Checking for new style volumes renamed by user to old style
// name format. Some users did it for unknown reason.
wchar AltNextName[NM];
wcsncpyz(AltNextName,Arc.FileName,ASIZE(AltNextName));
NextVolumeName(AltNextName,ASIZE(AltNextName),true);
OldSchemeTested=true;
if (Arc.Open(AltNextName,OpenMode))
{
wcsncpyz(NextName,AltNextName,ASIZE(NextName));
break;
}
}
#ifdef RARDLL
if (!DllVolChange(Cmd,NextName,ASIZE(NextName)))
{
FailedOpen=true;
break;
}
#else // !RARDLL
#ifndef SFX_MODULE
if (!RecoveryDone)
{
RecVolumesRestore(Cmd,Arc.FileName,true);
RecoveryDone=true;
continue;
}
#endif
if (!Cmd->VolumePause && !IsRemovable(NextName))
{
FailedOpen=true;
break;
}
#ifndef SILENT
if (Cmd->AllYes || !uiAskNextVolume(NextName,ASIZE(NextName)))
#endif
{
FailedOpen=true;
break;
}
#endif // RARDLL
}
if (FailedOpen)
{
uiMsg(UIERROR_MISSINGVOL,NextName);
Arc.Open(Arc.FileName,OpenMode);
Arc.Seek(PosBeforeClose,SEEK_SET);
return false;
}
if (Command=='T' || Command=='X' || Command=='E')
mprintf(St(Command=='T' ? MTestVol:MExtrVol),Arc.FileName);
Arc.CheckArc(true);
#ifdef RARDLL
if (!DllVolNotify(Cmd,NextName))
return false;
#endif
if (SplitHeader)
Arc.SearchBlock(HeaderType);
else
Arc.ReadHeader();
if (Arc.GetHeaderType()==HEAD_FILE)
{
Arc.ConvertAttributes();
Arc.Seek(Arc.NextBlockPos-Arc.FileHead.PackSize,SEEK_SET);
}
if (ShowFileName && !Cmd->DisableNames)
{
mprintf(St(MExtrPoints),Arc.FileHead.FileName);
if (!Cmd->DisablePercentage)
mprintf(L" ");
}
if (DataIO!=NULL)
{
if (HeaderType==HEAD_ENDARC)
DataIO->UnpVolume=false;
else
{
DataIO->UnpVolume=hd->SplitAfter;
DataIO->SetPackedSizeToRead(hd->PackSize);
}
#ifdef SFX_MODULE
DataIO->UnpArcSize=Arc.FileLength();
#endif
// Reset the size of packed data read from current volume. It is used
// to display the total progress and preceding volumes are already
// compensated with ProcessedArcSize, so we need to reset this variable.
DataIO->CurUnpRead=0;
DataIO->PackedDataHash.Init(hd->FileHash.Type,Cmd->Threads);
}
return true;
}
#ifdef RARDLL
#if defined(RARDLL) && defined(_MSC_VER) && !defined(_WIN_64)
// Disable the run time stack check for unrar.dll, so we can manipulate
// with ChangeVolProc call type below. Run time check would intercept
// a wrong ESP before we restore it.
#pragma runtime_checks( "s", off )
#endif
bool DllVolChange(RAROptions *Cmd,wchar *NextName,size_t NameSize)
{
bool DllVolChanged=false,DllVolAborted=false;
if (Cmd->Callback!=NULL)
{
wchar OrgNextName[NM];
wcsncpyz(OrgNextName,NextName,ASIZE(OrgNextName));
if (Cmd->Callback(UCM_CHANGEVOLUMEW,Cmd->UserData,(LPARAM)NextName,RAR_VOL_ASK)==-1)
DllVolAborted=true;
else
if (wcscmp(OrgNextName,NextName)!=0)
DllVolChanged=true;
else
{
char NextNameA[NM],OrgNextNameA[NM];
WideToChar(NextName,NextNameA,ASIZE(NextNameA));
strncpyz(OrgNextNameA,NextNameA,ASIZE(OrgNextNameA));
if (Cmd->Callback(UCM_CHANGEVOLUME,Cmd->UserData,(LPARAM)NextNameA,RAR_VOL_ASK)==-1)
DllVolAborted=true;
else
if (strcmp(OrgNextNameA,NextNameA)!=0)
{
// We can damage some Unicode characters by U->A->U conversion,
// so set Unicode name only if we see that ANSI name is changed.
CharToWide(NextNameA,NextName,NameSize);
DllVolChanged=true;
}
}
}
if (!DllVolChanged && Cmd->ChangeVolProc!=NULL)
{
char NextNameA[NM];
WideToChar(NextName,NextNameA,ASIZE(NextNameA));
// Here we preserve ESP value. It is necessary for those developers,
// who still define ChangeVolProc callback as "C" type function,
// even though in year 2001 we announced in unrar.dll whatsnew.txt
// that it will be PASCAL type (for compatibility with Visual Basic).
#if defined(_MSC_VER)
#ifndef _WIN_64
__asm mov ebx,esp
#endif
#elif defined(_WIN_ALL) && defined(__BORLANDC__)
_EBX=_ESP;
#endif
int RetCode=Cmd->ChangeVolProc(NextNameA,RAR_VOL_ASK);
// Restore ESP after ChangeVolProc with wrongly defined calling
// convention broken it.
#if defined(_MSC_VER)
#ifndef _WIN_64
__asm mov esp,ebx
#endif
#elif defined(_WIN_ALL) && defined(__BORLANDC__)
_ESP=_EBX;
#endif
if (RetCode==0)
DllVolAborted=true;
else
CharToWide(NextNameA,NextName,NameSize);
}
// We quit only on 'abort' condition, but not on 'name not changed'.
// It is legitimate for program to return the same name when waiting
// for currently non-existent volume.
// Also we quit to prevent an infinite loop if no callback is defined.
if (DllVolAborted || Cmd->Callback==NULL && Cmd->ChangeVolProc==NULL)
{
Cmd->DllError=ERAR_EOPEN;
return false;
}
return true;
}
#endif
#ifdef RARDLL
bool DllVolNotify(RAROptions *Cmd,wchar *NextName)
{
char NextNameA[NM];
WideToChar(NextName,NextNameA,ASIZE(NextNameA));
if (Cmd->Callback!=NULL)
{
if (Cmd->Callback(UCM_CHANGEVOLUMEW,Cmd->UserData,(LPARAM)NextName,RAR_VOL_NOTIFY)==-1)
return false;
if (Cmd->Callback(UCM_CHANGEVOLUME,Cmd->UserData,(LPARAM)NextNameA,RAR_VOL_NOTIFY)==-1)
return false;
}
if (Cmd->ChangeVolProc!=NULL)
{
#if defined(_WIN_ALL) && !defined(_MSC_VER) && !defined(__MINGW32__)
_EBX=_ESP;
#endif
int RetCode=Cmd->ChangeVolProc(NextNameA,RAR_VOL_NOTIFY);
#if defined(_WIN_ALL) && !defined(_MSC_VER) && !defined(__MINGW32__)
_ESP=_EBX;
#endif
if (RetCode==0)
return false;
}
return true;
}
#if defined(RARDLL) && defined(_MSC_VER) && !defined(_WIN_64)
// Restore the run time stack check for unrar.dll.
#pragma runtime_checks( "s", restore )
#endif
#endif
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