public static Hash128 GetHash128(this AssetLoadInfo info)
{
StreamHasher hasher = new StreamHasher();
HashingHelpers.WriteHashData(info, hasher.Writer);
return(hasher.GetHash());
}
public static Hash128 GetHash128(this WriteCommand cmd)
{
StreamHasher hasher = new StreamHasher();
HashingHelpers.WriteHashData(cmd, hasher.Writer);
return(hasher.GetHash());
}
protected override ValidationResult IsValid(object value, ValidationContext validationContext)
{
HttpPostedFileBase file = value as HttpPostedFileBase;
if (value != null)
{
// Check the filename before doing the
// expensive hash check
if (!Regex.IsMatch(file.FileName, _r))
{
var errorMessage = FormatErrorMessage(validationContext.DisplayName +
". This name is not consistent with ShopKeep's for this type of import.");
return(new ValidationResult(errorMessage));
}
else
{
// The name is valid. Now we check the hash.
// Compute the hash.
string hash = StreamHasher.ComputeHash(file.InputStream);
// Store the hash on the model if a property was given.
if (_p != null)
{
var m = validationContext.ObjectInstance;
m.GetType().GetProperty(_p).SetValue(m, hash);
}
// Check that the file is unique
if (!Import.IsUniqueContentHash(hash))
{
// It isn't
var errorMessage = FormatErrorMessage(validationContext.DisplayName +
". This file has already been uploaded.");
return(new ValidationResult(errorMessage));
}
}
}
// The file checks out
return(ValidationResult.Success);
}
