/// <summary>
/// This examines the request to see if it matches a configured directory, and if there are any files with the
/// configured default names in that directory. If so this will append the corresponding file name to the request
/// path for a later middleware to handle.
/// </summary>
/// <param name="context"></param>
/// <returns></returns>
public Task Invoke(ProtoContext context)
{
if (context.GetEndpoint() == null &&
Helpers.IsGetOrHeadMethod(context.Request.Method) &&
Helpers.TryMatchPath(context, _matchUrl, forDirectory: true, subpath: out var subpath))
{
var dirContents = _fileProvider.GetDirectoryContents(subpath.Value);
if (dirContents.Exists)
{
// Check if any of our default files exist.
for (var matchIndex = 0; matchIndex < _options.DefaultFileNames.Count; matchIndex++)
{
var defaultFile = _options.DefaultFileNames[matchIndex];
var file = _fileProvider.GetFileInfo(subpath.Value + defaultFile);
// TryMatchPath will make sure subpath always ends with a "/" by adding it if needed.
if (file.Exists)
{
// If the path matches a directory but does not end in a slash, redirect to add the slash.
// This prevents relative links from breaking.
if (!Helpers.PathEndsInSlash(context.Request.Path))
{
context.Response.StatusCode = 301;
context.Response.Headers[HeaderNames.Location] = context.Request.PathBase + context.Request.Path + "/" + context.Request.QueryString;
return(Task.CompletedTask);
}
// Match found, re-write the url. A later middleware will actually serve the file.
context.Request.Path = new PathString(context.Request.Path.Value + defaultFile);
break;
}
}
}
}
return(_next(context));
}
/// <summary>
/// Examines the request to see if it matches a configured directory. If so, a view of the directory contents is returned.
/// </summary>
/// <param name="context"></param>
/// <returns></returns>
public Task Invoke(ProtoContext context)
{
// Check if the URL matches any expected paths, skip if an endpoint was selected
if (context.GetEndpoint() == null &&
Helpers.IsGetOrHeadMethod(context.Request.Method) &&
Helpers.TryMatchPath(context, _matchUrl, forDirectory: true, subpath: out var subpath) &&
TryGetDirectoryInfo(subpath, out var contents))
{
// If the path matches a directory but does not end in a slash, redirect to add the slash.
// This prevents relative links from breaking.
if (!Helpers.PathEndsInSlash(context.Request.Path))
{
context.Response.StatusCode = 301;
context.Response.Headers[HeaderNames.Location] = context.Request.PathBase + context.Request.Path + "/" + context.Request.QueryString;
return(Task.CompletedTask);
}
return(_formatter.GenerateContentAsync(context, contents));
}
return(_next(context));
}
public bool ValidateNoEndpoint() => _context.GetEndpoint() == null; // Return true because we only want to run if there is no endpoint.
