public void SetFileName(int index, string newName)
{
HashedFile item = Data.items[index];
item.oldFileName = item.FileName;
item.FileName = newName;
}
public void AddActual(string name, byte[] storedActualHash, HashMode hashStyle = HashMode.Binary)
{
var item = new HashedFile(name, storedActualHash, hashStyle, storedActualHash);
Data.items.Add(item);
item.IsMatch = storedActualHash == null? (bool?)null : true;
}
public void SetOldFileName(int index, string newOldName)
{
HashedFile item = Data.items[index];
if (item.oldFileName != newOldName)
{
item.oldFileName = newOldName;
item.RaisePropertyChanged(null);
}
}
public void SetStoredHash(int index, byte[] newHash)
{
HashedFile item = Data.items[index];
if (!newHash.SequenceEqual(item.storedHash))
{
item.storedHash = new byte[newHash.Length];
Array.Copy(newHash, item.storedHash, newHash.Length);
SetIsMatch(index, newHash.SequenceEqual(item.actualHash));
item.RaisePropertyChanged(null);
}
}
public string GetPath(int index)
{
HashedFile item = items[index];
if (item.IsRelative == true)
{
return(BaseDir + item.FileName);
}
else
{
return(item.FileName);
}
}
public void SetActualHash(int index, byte[] newHash)
{
HashedFile item = Data.items[index];
item.actualHash = newHash;
if (newHash == null)
{
SetIsMatch(index, false);
}
else
{
SetIsMatch(index, item.StoredHash != null && item.actualHash.SequenceEqual(item.StoredHash));
}
}
public void SetIsMatch(int index, bool newValue)
{
HashedFile item = Data.items[index];
if (newValue != item.IsMatch)
{
if (item.IsMatch == true)
{
--Data.MatchCount;
}
if (newValue == true)
{
++Data.MatchCount;
}
item.IsMatch = newValue;
}
}
public void SetIsFound(int index, bool newValue)
{
HashedFile item = Data.items[index];
if (newValue != item.IsFound)
{
if (item.IsFound == true)
{
--Data.FoundCount;
}
if (newValue == true)
{
++Data.FoundCount;
}
else if (newValue == false)
{
item.actualHash = null;
}
item.IsFound = newValue;
}
}
public void SetStoredHashToActual(int index)
{
HashedFile item = Data.items[index];
if (item.actualHash == null)
{
if (item.storedHash != null)
{
item.IsMatch = item.actualHash != null? false : (bool?)null;
item.storedHash = null;
item.RaisePropertyChanged(null);
}
}
else if (!item.actualHash.SequenceEqual(item.storedHash))
{
item.storedHash = new byte[item.actualHash.Length];
Array.Copy(item.actualHash, item.storedHash, item.storedHash.Length);
SetIsMatch(index, true);
item.RaisePropertyChanged(null);
}
}
protected void ComputeContentHashes(CryptoHasher hasher, Hashes mediaHash = Hashes.None)
{
System.Diagnostics.Debug.Assert(Data.HashedFiles.HashLength == hasher.HashLength);
for (int index = 0; index < Data.HashedFiles.Items.Count; ++index)
{
HashedFile item = Data.HashedFiles.Items[index];
string err = null;
var targetName = Data.HashedFiles.GetPath(index);
try
{
using (var tfs = new FileStream(targetName, FileMode.Open, FileAccess.Read))
{
HashedModel.SetIsFound(index, true);
byte[] hash = null;
if (item.Mode == HashMode.Text || item.Mode == HashMode.Binary)
{
hasher.Append(tfs);
hash = hasher.GetHashAndReset();
}
else if (!(hasher is Sha1Hasher))
{
IssueModel.Add("Nonfile hashes not supported for this type.");
}
else
{
var h0 = item.Mode == HashMode.Meta ? Hashes.MetaSHA1 : Hashes.MediaSHA1;
var fmtModel = FormatBase.Model.Create(tfs, targetName, h0);
if (fmtModel == null)
{
IssueModel.Add($"Unknown file format item #{index+1}.");
}
else
{
hash = item.Mode == HashMode.Meta ? fmtModel.Data.MetaSHA1 : fmtModel.Data.MediaSHA1;
}
}
HashedModel.SetActualHash(index, hash);
if (item.IsMatch == false)
{
IssueModel.Add($"{Data.HasherName} mismatch on '{item.FileName}'.");
}
}
}
catch (Exception ex) when(ex is FileNotFoundException || ex is IOException || ex is UnauthorizedAccessException)
{
err = ex.Message.TrimEnd(null);
}
if (err != null)
{
HashedModel.SetIsFound(index, false);
IssueModel.Add(err);
}
}
string tx = $"{Data.HasherName} validation of {Data.HashedFiles.Items.Count} file";
if (Data.HashedFiles.Items.Count != 1)
{
tx += "s";
}
if (base.Data.Issues.MaxSeverity < Severity.Error)
{
tx += " successful.";
}
else
{
tx += $" failed with {Data.HashedFiles.FoundCount} found and {Data.HashedFiles.MatchCount} matched.";
}
IssueModel.Add(tx, Severity.Advisory);
}
