/// <summary>
/// Decode the username from filename
/// </summary>
/// <param name="fileName">File name used to decode username</param>
/// <param name="fileType">File type</param>
/// <returns>decoded username</returns>
public static string GetUserNameFromFileName(string fileName, PxFileType fileType = PxFileType.PxData)
{
string trimedName = null;
string head = PxFileTypeInfo.GetHead(fileType);
string tail = PxFileTypeInfo.GetTail(fileType);
// If it is an file exported from PassXYZ, we can decode the user name.
if (fileName.StartsWith(head))
{
trimedName = fileName.Substring(head.Length);
trimedName = trimedName.Substring(0, trimedName.LastIndexOf(tail));
//Debug.WriteLine($"GetUserNameFromFileName: {fileName}, {trimedName}");
}
else
{
Debug.WriteLine($"GetUserNameFromFileName: {fileName} is not PassXYZ data file.");
return(string.Empty);
}
try
{
if (trimedName != string.Empty)
{
trimedName = Base58CheckEncoding.GetString(trimedName);
}
}
catch (FormatException e)
{
Debug.WriteLine($"GetUserNameFromFileName decode failed with {e.Message}");
trimedName = string.Empty;
}
return(trimedName);
}
public static string GetTail(PxFileType fileType)
{
string strHead = null;
switch (fileType)
{
case PxFileType.PwData:
strHead = PxDefs.kdbx;
break;
case PxFileType.PxData:
case PxFileType.PxDataEx:
strHead = PxDefs.xyz;
break;
case PxFileType.PxKeyFile:
strHead = PxDefs.k4xyz;
break;
case PxFileType.PxSync:
strHead = PxDefs.r4xyz;
break;
case PxFileType.PxExchange:
strHead = PxDefs.s4xyz;
break;
case PxFileType.PxTemplate:
strHead = PxDefs.t4xyz;
break;
default:
break;
}
return(strHead);
}
public static string GetHead(PxFileType fileType)
{
string strHead = null;
switch (fileType)
{
case PxFileType.PwData:
case PxFileType.PxData:
strHead = PxDefs.head_xyz;
break;
case PxFileType.PxDataEx:
strHead = PxDefs.head_data;
break;
case PxFileType.PxKeyFile:
strHead = PxDefs.head_k4xyz;
break;
case PxFileType.PxSync:
strHead = PxDefs.head_r4xyz;
break;
case PxFileType.PxExchange:
strHead = PxDefs.head_s4xyz;
break;
case PxFileType.PxTemplate:
strHead = PxDefs.head_t4xyz;
break;
default:
break;
}
return(strHead);
}