/// <summary>
/// Invoked whenever Podbean successfully authenticates a user
/// </summary>
/// <param name="context">
/// Contains information about the login session as well as the user
/// <see cref="System.Security.Claims.ClaimsIdentity" />.
/// </param>
/// <returns>A <see cref="Task" /> representing the completed operation.</returns>
public virtual Task Authenticated(PodbeanAuthenticatedContext context)
{
return(OnAuthenticated(context));
}
protected override async Task <AuthenticationTicket> AuthenticateCoreAsync()
{
AuthenticationProperties properties = null;
try
{
string code = null;
string state = null;
var query = Request.Query;
var values = query.GetValues("code");
if (values != null && values.Count == 1)
{
code = values[0];
}
values = query.GetValues("state");
if (values != null && values.Count == 1)
{
state = values[0];
}
properties = Options.StateDataFormat.Unprotect(state);
if (properties == null)
{
return(null);
}
// OAuth2 10.12 CSRF
if (!ValidateCorrelationId(properties, _logger))
{
return(new AuthenticationTicket(null, properties));
}
var requestPrefix = GetBaseUri(Request);
var redirectUri = requestPrefix + Request.PathBase + Options.CallbackPath;
// Build up the body for the token request
var body = new List <KeyValuePair <string, string> >
{
new KeyValuePair <string, string>("grant_type", "authorization_code"),
new KeyValuePair <string, string>("code", code),
new KeyValuePair <string, string>("redirect_uri", redirectUri)
};
// Request the token
var tokenRequest = new HttpRequestMessage(HttpMethod.Post, TokenEndpoint);
tokenRequest.Headers.Authorization =
new AuthenticationHeaderValue("Basic", Base64Encode($"{Options.AppId}:{Options.AppSecret}"));
tokenRequest.Content = new FormUrlEncodedContent(body);
var tokenResponse = await _httpClient.SendAsync(tokenRequest, Request.CallCancelled);
tokenResponse.EnsureSuccessStatusCode();
var text = await tokenResponse.Content.ReadAsStringAsync();
// Deserializes the token response
dynamic token = JsonConvert.DeserializeObject <dynamic>(text);
var accessToken = (string)token.access_token;
var refreshToken = (string)token.refresh_token;
var expires = (string)token.expires_in;
// Get the Podbean podcast
var podcastResponse = await _httpClient.GetAsync(
$"{PodcastEndpoint}?access_token={Uri.EscapeDataString(accessToken)}", Request.CallCancelled);
podcastResponse.EnsureSuccessStatusCode();
text = await podcastResponse.Content.ReadAsStringAsync();
var podcast = JObject.Parse(text)["podcast"].ToObject <Podcast>();
// Get the Podbean podcast id
var podcastIdRequest = new HttpRequestMessage(HttpMethod.Get, $"{PodcastIdEndpoint}?access_token={Uri.EscapeDataString(accessToken)}");
podcastIdRequest.Headers.Authorization =
new AuthenticationHeaderValue("Basic", Base64Encode($"{Options.AppId}:{Options.AppSecret}"));
var podcastIdResponse = await _httpClient.SendAsync(podcastIdRequest, Request.CallCancelled);
podcastIdResponse.EnsureSuccessStatusCode();
text = await podcastIdResponse.Content.ReadAsStringAsync();
var podcastId = JsonConvert.DeserializeObject <dynamic>(text);
podcast.Id = (string)podcastId.podcast_id;
var context = new PodbeanAuthenticatedContext(Context, podcast, accessToken, refreshToken, expires)
{
Identity = new ClaimsIdentity(
Options.AuthenticationType,
ClaimsIdentity.DefaultNameClaimType,
ClaimsIdentity.DefaultRoleClaimType)
};
if (!string.IsNullOrEmpty(context.Id))
{
context.Identity.AddClaim(new Claim(ClaimTypes.NameIdentifier, context.Id, XmlSchemaString,
Options.AuthenticationType));
}
if (!string.IsNullOrEmpty(context.Name))
{
context.Identity.AddClaim(new Claim(ClaimsIdentity.DefaultNameClaimType, context.Name,
XmlSchemaString, Options.AuthenticationType));
}
context.Properties = properties;
await Options.Provider.Authenticated(context);
return(new AuthenticationTicket(context.Identity, context.Properties));
}
catch (Exception ex)
{
_logger.WriteError(ex.Message);
}
return(new AuthenticationTicket(null, properties));
}
