protected override async Task <AuthenticationTicket> AuthenticateCoreAsync()
{
_logger.WriteVerbose("AuthenticateCore");
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];
}
properties = Options.StateDataFormat.Unprotect(state);
if (properties == null)
{
return(null);
}
// OAuth2 10.12 CSRF
if (!ValidateCorrelationId(properties, _logger))
{
return(new AuthenticationTicket(null, properties));
}
var tokenRequestParameters = new List <KeyValuePair <string, string> >()
{
new KeyValuePair <string, string>("client_id", Options.ClientId),
new KeyValuePair <string, string>("client_secret", Options.ClientSecret),
new KeyValuePair <string, string>("grant_type", "authorization_code"),
new KeyValuePair <string, string>("redirect_uri", GenerateRedirectUri()),
new KeyValuePair <string, string>("code", code),
};
FormUrlEncodedContent requestContent = new FormUrlEncodedContent(tokenRequestParameters);
HttpResponseMessage response = await _httpClient.PostAsync(TokenEndpoint, requestContent, Request.CallCancelled);
response.EnsureSuccessStatusCode();
string oauthTokenResponse = await response.Content.ReadAsStringAsync();
JObject oauth2Token = JObject.Parse(oauthTokenResponse);
string accessToken = oauth2Token["access_token"].Value <string>();
if (string.IsNullOrWhiteSpace(accessToken))
{
_logger.WriteWarning("Access token was not found");
return(new AuthenticationTicket(null, properties));
}
HttpResponseMessage graphResponse = await _httpClient.GetAsync(
GraphApiEndpoint + "?oauth_token=" + Uri.EscapeDataString(accessToken) + "&v=20130910", Request.CallCancelled);
graphResponse.EnsureSuccessStatusCode();
string accountString = await graphResponse.Content.ReadAsStringAsync();
JObject accountInformation = JObject.Parse(accountString);
JObject user = (JObject)accountInformation["response"]["user"];
var context = new FoursquareAuthenticatedContext(Context, user, accessToken);
context.Identity = new ClaimsIdentity(
new[]
{
new Claim(ClaimTypes.NameIdentifier, context.Id, XmlSchemaString, Options.AuthenticationType),
new Claim(ClaimTypes.Name, context.Name, XmlSchemaString, Options.AuthenticationType),
new Claim("urn:foursquare:id", context.Id, XmlSchemaString, Options.AuthenticationType),
new Claim("urn:foursquare:name", context.Name, XmlSchemaString, Options.AuthenticationType)
},
Options.AuthenticationType,
ClaimsIdentity.DefaultNameClaimType,
ClaimsIdentity.DefaultRoleClaimType);
if (!string.IsNullOrWhiteSpace(context.Email))
{
context.Identity.AddClaim(new Claim(ClaimTypes.Email, context.Email, XmlSchemaString, Options.AuthenticationType));
}
await Options.Provider.Authenticated(context);
context.Properties = properties;
return(new AuthenticationTicket(context.Identity, context.Properties));
}
catch (Exception ex)
{
_logger.WriteWarning("Authentication failed", ex);
return(new AuthenticationTicket(null, properties));
}
}
public virtual Task Authenticated(FoursquareAuthenticatedContext context)
{
return OnAuthenticated(context);
}
public virtual Task Authenticated(FoursquareAuthenticatedContext context)
{
return(OnAuthenticated(context));
}