private static void CheckADir(RvDir dbDir, bool report)
{
if (_cacheSaveTimer.Elapsed.TotalMinutes > Settings.CacheSaveTimePeriod)
{
_bgw.ReportProgress(0, "Saving Cache");
DB.Write();
_bgw.ReportProgress(0, "Saving Cache Complete");
_cacheSaveTimer.Reset();
_cacheSaveTimer.Start();
}
string fullDir = dbDir.FullName;
if (report)
{
_bgw.ReportProgress(0, new bgwText2(fullDir));
}
DatStatus chechingDatStatus = dbDir.IsInToSort ? DatStatus.InToSort : DatStatus.NotInDat;
// this is a temporary rvDir structure to store the data about the actual directory/files we are scanning
// we will first populate this variable with the real file data from the directory, and then compare it
// with the data in dbDir.
RvDir fileDir = null;
Debug.WriteLine(fullDir);
FileType ft = dbDir.FileType;
#region "Populate fileDir"
// if we are scanning a ZIP file then populate scanDir from the ZIP file
switch (ft)
{
case FileType.Zip:
{
fileDir = new RvDir(ft);
// open the zip file
ZipFile checkZ = new ZipFile();
ZipReturn zr = checkZ.ZipFileOpen(fullDir, dbDir.TimeStamp, true);
if (zr == ZipReturn.ZipGood)
{
dbDir.ZipStatus = checkZ.ZipStatus;
// to be Scanning a ZIP file means it is either new or has changed.
// as the code below only calls back here if that is true.
//
// Level1: Only use header CRC's
// Just get the CRC for the ZIP headers.
//
// Level2: Fully checksum changed only files
// We know this file has been changed to do a full checksum scan.
//
// Level3: Fully checksum everything
// So do a full checksum scan.
if (EScanLevel == eScanLevel.Level2 || EScanLevel == eScanLevel.Level3)
{
checkZ.DeepScan();
}
// add all of the file information from the zip file into scanDir
for (int i = 0; i < checkZ.LocalFilesCount(); i++)
{
RvFile tFile = new RvFile(DBTypeGet.FileFromDir(ft))
{
Name = checkZ.Filename(i),
ZipFileIndex = i,
ZipFileHeaderPosition = checkZ.LocalHeader(i),
Size = checkZ.UncompressedSize(i),
CRC = checkZ.CRC32(i)
};
// all 3 levels read the CRC from the ZIP header
tFile.SetStatus(chechingDatStatus, GotStatus.Got);
tFile.FileStatusSet(FileStatus.SizeFromHeader | FileStatus.CRCFromHeader);
// if we are in level 2 or level 3 then do a full CheckSum Scan.
if (EScanLevel == eScanLevel.Level2 || EScanLevel == eScanLevel.Level3)
{
// DeepScan will return ZipReturn.ZipCRCDecodeError if the headers CRC and
// the actual CRC do not match.
// So we just need to set the MD5 and SHA1 from the ZIP file.
zr = checkZ.FileStatus(i);
if (zr == ZipReturn.ZipUntested)
{
_bgw.ReportProgress(0, new bgwShowCorrupt(zr, fullDir + " : " + checkZ.Filename(i)));
}
else if (zr != ZipReturn.ZipGood)
{
_bgw.ReportProgress(0, new bgwShowCorrupt(zr, fullDir + " : " + checkZ.Filename(i)));
tFile.GotStatus = GotStatus.Corrupt;
}
else
{
tFile.MD5 = checkZ.MD5(i);
tFile.SHA1 = checkZ.SHA1(i);
tFile.FileStatusSet(FileStatus.SizeVerified | FileStatus.CRCVerified | FileStatus.SHA1Verified | FileStatus.MD5Verified);
}
}
fileDir.ChildAdd(tFile);
}
}
else if (zr == ZipReturn.ZipFileLocked)
{
_bgw.ReportProgress(0, new bgwShowError(fullDir, "Zip File Locked"));
dbDir.TimeStamp = 0;
dbDir.GotStatus = GotStatus.FileLocked;
}
else
{
_bgw.ReportProgress(0, new bgwShowCorrupt(zr, fullDir));
dbDir.GotStatus = GotStatus.Corrupt;
}
checkZ.ZipFileClose();
}
break;
case FileType.Dir:
{
fileDir = new RvDir(FileType.Dir);
DirectoryInfo oDir = new DirectoryInfo(fullDir);
DirectoryInfo[] oDirs = oDir.GetDirectories();
FileInfo[] oFiles = oDir.GetFiles();
// add all the subdirectories into scanDir
foreach (DirectoryInfo dir in oDirs)
{
RvBase tDir = new RvDir(FileType.Dir)
{
Name = dir.Name,
TimeStamp = dir.LastWriteTime,
};
tDir.SetStatus(chechingDatStatus, GotStatus.Got);
fileDir.ChildAdd(tDir);
}
// add all the files into scanDir
foreach (FileInfo oFile in oFiles)
{
// if we find any zip files add them as zip files.
string fExt = Path.GetExtension(oFile.Name);
switch (fExt.ToLower())
{
case ".zip":
{
RvDir tGame = new RvDir(FileType.Zip)
{
Name = Path.GetFileNameWithoutExtension(oFile.Name),
TimeStamp = oFile.LastWriteTime,
};
tGame.SetStatus(chechingDatStatus, GotStatus.Got);
fileDir.ChildAdd(tGame);
}
break;
default:
{
string fName = oFile.Name;
if (fName == "__RomVault.tmp")
{
File.Delete(oFile.FullName);
continue;
}
// Scanning a file
//
// Level1 & 2 : (are the same for files) Fully checksum changed only files
// Here we are just getting the TimeStamp of the File, and later
// if the TimeStamp was not matched we will have to read the files CRC, MD5 & SHA1
//
// Level3: Fully checksum everything
// Get everything about the file right here so
// read CRC, MD5 & SHA1
// add all the files in the sub-directory to scanDir
RvFile tFile = new RvFile(FileType.File)
{
Name = fName,
Size = (ulong)oFile.Length,
TimeStamp = oFile.LastWriteTime
};
tFile.FileStatusSet(FileStatus.SizeVerified);
int errorCode = CHD.CheckFile(oFile, out tFile.SHA1CHD, out tFile.MD5CHD, out tFile.CHDVersion);
if (errorCode == 0)
{
if (tFile.SHA1CHD != null)
{
tFile.FileStatusSet(FileStatus.SHA1CHDFromHeader);
}
if (tFile.MD5CHD != null)
{
tFile.FileStatusSet(FileStatus.MD5CHDFromHeader);
}
tFile.SetStatus(chechingDatStatus, GotStatus.Got);
// if we are scanning at Level3 then we get all the info here
if (EScanLevel == eScanLevel.Level3)
{
DeepScanFile(fullDir, tFile);
ChdManCheck(fullDir, tFile);
}
}
else if (errorCode == 32)
{
tFile.GotStatus = GotStatus.FileLocked;
_bgw.ReportProgress(0, new bgwShowError(fullDir, "File Locked"));
}
else
{
string filename = Path.Combine(fullDir, tFile.Name);
ReportError.Show("File: " + filename + " Error: " + new Win32Exception(errorCode).Message + ". Scan Aborted.");
_fileErrorAbort = true;
return;
}
fileDir.ChildAdd(tFile);
}
break;
}
}
}
break;
default:
ReportError.SendAndShow("Un supported file type in CheckADir " + ft);
break;
}
#endregion
if (fileDir == null)
{
ReportError.SendAndShow("Unknown Reading File Type in Dir Scanner");
return;
}
if (report)
{
_bgw.ReportProgress(0, new bgwSetRange2(fileDir.ChildCount - 1));
_bgw.ReportProgress(0, new bgwRange2Visible(true));
}
if (!DBTypeGet.isCompressedDir(ft) && _bgw.CancellationPending)
{
return;
}
Compare(dbDir, fileDir, report, true);
}
