protected override async Task <AuthenticationTicket> AuthenticateCoreAsync()
{
AuthenticationProperties properties = null;
try
{
string code = null;
string state = null;
string error = null;
var query = Request.Query;
//CHECK FOR ERRORS IF RECEIVED
var values = query.GetValues("error");
if (values != null && values.Count > 0)
{
error = values[0];
}
//IF ERROR IS RETURNED, DISCONTINUE THE OPERATION FROM HERE.
if (!string.IsNullOrEmpty(error))
{
throw new Exception(error);
}
//IN CASE OF SUCCESS, SP APP WILL RECEIVE THE CODE
values = query.GetValues("code");
if (values != null && values.Count > 0)
{
code = values[0];
}
//CHECK FOR THE STATES
values = query.GetValues("state");
if (values != null && values.Count > 0)
{
state = values[0];
}
properties = Options.StateDataFormat.Unprotect(state);
if (properties == null)
{
return(null);
}
//OAuth2 10.12 CROSS SITE REQUEST FORGERY - VALIDATE
if (!ValidateCorrelationId(properties, _logger))
{
return(new AuthenticationTicket(null, properties));
}
//REDIRECT URI
var requestPrefix = Request.Scheme + "://" + Request.Host;
var redirectUri = requestPrefix + Request.PathBase + Options.CallbackPath;
//MAKE A REQUEST TO GET THE ACCESS TOKEN
HttpClient httpClient = new HttpClient();
//CREATING BODY FOR TOKEN REQUEST
IEnumerable <KeyValuePair <string, string> > requestBody = new List <KeyValuePair <string, string> >
{
new KeyValuePair <string, string>("redirect_uri", redirectUri),
new KeyValuePair <string, string>("grant_type", "authorization_code"),
new KeyValuePair <string, string>("client_id", Options.ClientId),
new KeyValuePair <string, string>("client_secret", Options.ClientSecret),
new KeyValuePair <string, string>("code", code)
};
string tokenResponse = await PostFormUrlEncoded <string>(Options.UAEPassEndPoints.TokenEndpoint, requestBody);
//DESERIALIZE CONTENT
dynamic response = JsonConvert.DeserializeObject <dynamic>(tokenResponse);
//STORING ACCESS TOKEN - NO REFRESH TOKEN IS SUPPORTED BY UAE PASS
var accessToken = (string)response.access_token;
//GET USER'S INFORMATION FROM UAE PASS USING USER INFO END POINT
httpClient = new HttpClient();
httpClient.DefaultRequestHeaders.Add("Accept", "application/json");
httpClient.DefaultRequestHeaders.Add("Authorization", "Bearer " + accessToken);
HttpResponseMessage userResponse = await httpClient.GetAsync(Options.UAEPassEndPoints.UserInfoEndpoint);
userResponse.EnsureSuccessStatusCode();
var rawResponse = await userResponse.Content.ReadAsStringAsync();
var user = JsonConvert.DeserializeObject <UAEPassUser>(rawResponse);
var context = new UAEPassAuthenticatedContext(Context, user, accessToken, rawResponse)
{
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.UserName))
{
context.Identity.AddClaim(new Claim(ClaimsIdentity.DefaultNameClaimType, context.UserName, XmlSchemaString, Options.AuthenticationType));
}
if (!string.IsNullOrEmpty(context.Email))
{
context.Identity.AddClaim(new Claim(ClaimTypes.Email, context.Email, XmlSchemaString, Options.AuthenticationType));
}
if (!string.IsNullOrEmpty(context.Name))
{
context.Identity.AddClaim(new Claim("urn:UAEPass:name", context.Name, XmlSchemaString, Options.AuthenticationType));
}
context.Properties = properties;
await Options.Provider.Authenticated(context);
var retTicket = new AuthenticationTicket(context.Identity, context.Properties);
retTicket.Properties.AllowRefresh = false;
retTicket.Properties.IsPersistent = true;
return(retTicket);
}
catch (Exception ex)
{
_logger.WriteError(ex.Message);
}
return(new AuthenticationTicket(null, properties));
}
public virtual Task Authenticated(UAEPassAuthenticatedContext context)
{
return(OnAuthenticated(context));
}