public async Task <ContentResult> Authorize(
[FromQuery(Name = "state")] string state = null,
[FromQuery(Name = "code")] string code = null,
[FromQuery(Name = "error")] string error = null)
{
if (string.IsNullOrEmpty(state))
{
// return Test HTML
return(new ContentResult
{
Content = "<form method=\"post\"><input type=\"submit\" value=\"Authorize\" /></form>",
ContentType = "text/html",
StatusCode = 200
});
}
string userId = HttpHelper.GetUserId(HttpContext);
// if Spotify returned an error, throw it
if (error != null)
{
throw new SpotifyApiErrorException(error);
}
// Use the code to request a token
var tokens = await _userAccounts.RequestAccessRefreshToken(code);
//TODO: check state is valid
await _userStateService.ValidateState(state, userId);
// Save the Token
await _tokenService.SetSpotifyAccessToken(userId, tokens);
//TODO: Get the Spotify Username
// Create a User if not exists
await _userService.CreateUserIfNotExists(userId);
// Get a Ringo Token
var ringoToken = await _tokenService.GetRingoAccessToken(userId);
// return an HTML result that posts a message back to the opening window and then closes itself.
return(new ContentResult
{
ContentType = "text/html",
StatusCode = (int)HttpStatusCode.OK,
Content = $"<html><body><script>window.opener.postMessage(\"{ userId },{ ringoToken }\", \"*\");window.close()</script></body></html>"
});
}
public async Task OnActionExecutionAsync(ActionExecutingContext context, ActionExecutionDelegate next)
{
// Only run if Controller / Action is decorated with [AuthSpotifyBearer]
var attribute = context.ActionDescriptor.FilterDescriptors
.Select(x => x.Filter).OfType <AuthSpotifyBearerAttribute>().FirstOrDefault();
if (attribute == null)
{
await next();
return;
}
// if no auth header => Forbidden
string bearer = HttpHelper.GetBearerToken(context.HttpContext);
if (bearer == null)
{
context.Result = new StatusCodeResult(403);
return;
}
// if user exists and user has been authorized and token has not expired and token matches bearer => Continue
string userId = HttpHelper.GetUserId(context.HttpContext);
var ringoToken = await _tokens.GetRingoAccessToken(userId);
if (
ringoToken == null ||
ringoToken.AccessTokenExpired ||
ringoToken.AccessToken != bearer)
{
context.Result = new StatusCodeResult(403);
return;
}
await next();
}