/// <summary>
/// Creates <see cref="IHierarchyItemAsync"/> instance by path.
/// </summary>
/// <param name="path">Item relative path including query string.</param>
/// <returns>Instance of corresponding <see cref="IHierarchyItemAsync"/> or null if item is not found.</returns>
public override async Task <IHierarchyItemAsync> GetHierarchyItemAsync(string path)
{
path = path.Trim(new[] { ' ', '/' });
//remove query string.
int ind = path.IndexOf('?');
if (ind > -1)
{
path = path.Remove(ind);
}
IHierarchyItemAsync item = null;
item = await DavFolder.GetFolderAsync(this, path);
if (item != null)
{
return(item);
}
item = await DavFile.GetFileAsync(this, path);
if (item != null)
{
return(item);
}
Logger.LogDebug("Could not find item that corresponds to path: " + path);
return(null); // no hierarchy item that corresponds to path parameter was found in the repository
}
/// <summary>
/// Returns file that corresponds to path.
/// </summary>
/// <param name="context">WebDAV Context.</param>
/// <param name="path">Encoded path relative to WebDAV root folder.</param>
/// <returns>File instance or null if physical file is not found in file system.</returns>
public static async Task <DavFile> GetFileAsync(DavContext context, string path)
{
string filePath = context.MapPath(path);
FileInfo file = new FileInfo(filePath);
// This code blocks vulnerability when "%20" folder can be injected into path and file.Exists returns 'true'.
if (!file.Exists || string.Compare(file.FullName.TrimEnd(System.IO.Path.DirectorySeparatorChar), filePath, StringComparison.OrdinalIgnoreCase) != 0)
{
return(null);
}
DavFile davFile = new DavFile(file, context, path);
davFile.serialNumber = await file.GetExtendedAttributeAsync <int?>("SerialNumber") ?? 0;
davFile.TotalContentLength = await file.GetExtendedAttributeAsync <long?>("TotalContentLength") ?? 0;
return(davFile);
}