public virtual Task Authenticated(MeetupAuthenticatedContext context)
{
return(OnAuthenticated(context));
}
protected override async Task <AuthenticationTicket> AuthenticateCoreAsync()
{
AuthenticationProperties properties = null;
try
{
string code = null;
string state = null;
IReadableStringCollection query = Request.Query;
IList <string> 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];
}
//Meetup replaces '_' charactors with spaces in the 'state' parameter when returns.
//Resetting it back to it's original string
state = state.Replace(' ', '_');
properties = Options.StateDataFormat.Unprotect(state);
if (properties == null)
{
return(null);
}
// OAuth2 10.12 CSRF
if (!ValidateCorrelationId(properties, _logger))
{
return(new AuthenticationTicket(null, properties));
}
string requestPrefix = Request.Scheme + "://" + Request.Host;
string redirectUri = requestPrefix + Request.PathBase + Options.CallbackPath;
string tokenRequest = "grant_type=authorization_code" +
"&code=" + Uri.EscapeDataString(code) +
"&redirect_uri=" + Uri.EscapeDataString(redirectUri) +
"&client_id=" + Uri.EscapeDataString(Options.Key) +
"&client_secret=" + Uri.EscapeDataString(Options.Secret);
//Meetup API requires to send the token request as a POST message.
//Initiated a new HttpRequestMessage object to use as a parameter for PostAsync method.
HttpRequestMessage request = new HttpRequestMessage();
HttpResponseMessage tokenResponse = await _httpClient.PostAsync(TokenEndpoint + "?" + tokenRequest, request.Content, Request.CallCancelled);
tokenResponse.EnsureSuccessStatusCode();
string text = await tokenResponse.Content.ReadAsStringAsync();
//Object is returned as a JSON Object.
//Parsing the string contains JSON text to a JSON Object.
JObject details = JObject.Parse(text);
string accessToken = null;
string expires = null;
foreach (var x in details)
{
if (x.Key == "access_token")
{
accessToken = (string)x.Value;
}
if (x.Key == "expires_in")
{
expires = (string)x.Value;
}
}
HttpResponseMessage apiResponse = await _httpClient.GetAsync(
ApiEndpoint + "?access_token=" + Uri.EscapeDataString(accessToken) +
"&member_id=self" + "&key=" + Uri.EscapeDataString(Options.Key), Request.CallCancelled);
apiResponse.EnsureSuccessStatusCode();
text = await apiResponse.Content.ReadAsStringAsync();
//Convert JSON string to a JSON Object
JObject info = JObject.Parse(text);
//Extract the 'results' JToken from info
JToken results = info["results"];
JToken userinfo = results.First;
JObject user = userinfo as JObject;
var context = new MeetupAuthenticatedContext(Context, user, accessToken, expires);
context.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));
}
if (!string.IsNullOrEmpty(context.City))
{
context.Identity.AddClaim(new Claim("urn:meetup:city", context.City, XmlSchemaString, Options.AuthenticationType));
}
if (!string.IsNullOrEmpty(context.Country))
{
context.Identity.AddClaim(new Claim(ClaimTypes.Country, context.Country, XmlSchemaString, Options.AuthenticationType));
}
if (!string.IsNullOrEmpty(context.Link))
{
context.Identity.AddClaim(new Claim("urn:meetup:link", context.Link, XmlSchemaString, Options.AuthenticationType));
}
if (!string.IsNullOrEmpty(context.Joined))
{
context.Identity.AddClaim(new Claim("urn:meetup:joined", context.Joined, XmlSchemaString, Options.AuthenticationType));
}
if (!string.IsNullOrEmpty(context.PhotoUrl))
{
context.Identity.AddClaim(new Claim("urn:meetup:photourl", context.PhotoUrl, 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));
}
public virtual Task Authenticated(MeetupAuthenticatedContext context)
{
return OnAuthenticated(context);
}