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 = Request.Scheme + "://" + Request.Host;
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>("client_id", Options.ClientId),
new KeyValuePair <string, string>("client_secret", Options.ClientSecret),
new KeyValuePair <string, string>("redirect_uri", redirectUri),
new KeyValuePair <string, string>("code", code)
};
/*Your app makes a POST request to https://app..com/-/oauth_token, passing the parameters as part of a standard form-encoded post body.
* grant_type - required Must be authorization_code
* client_id - required The Client ID uniquely identifies the application making the request.
* client_secret - required The Client Secret belonging to the app, found in the details pane of the developer view
* redirect_uri - required Must match the redirect_uri specified in the original request
* code - required The code you are exchanging for an auth token
*/
// Request the token
var requestMessage = new HttpRequestMessage(HttpMethod.Post, Options.Endpoints.TokenEndpoint);
requestMessage.Headers.Accept.Add(new MediaTypeWithQualityHeaderValue("application/json"));
requestMessage.Content = new FormUrlEncodedContent(body);
var tokenResponse = await _httpClient.SendAsync(requestMessage);
tokenResponse.EnsureSuccessStatusCode();
var text = await tokenResponse.Content.ReadAsStringAsync();
// Deserializes the token response
dynamic response = JsonConvert.DeserializeObject <dynamic>(text);
var accessToken = (string)response.access_token;
/*
* In the response, you will receive a JSON payload with the following parameters:
* access_token - The token to use in future requests against the API
* expires_in - The number of seconds the token is valid, typically 3600 (one hour)
* token_type - The type of token, in our case, bearer
* refresh_token - If exchanging a code, a long-lived token that can be used to get new access tokens when old ones expire.
* data - A JSON object encoding a few key fields about the logged-in user, currently id, name, and email.
*/
// Get the GitHub user
var userRequest = new HttpRequestMessage(HttpMethod.Get, Options.Endpoints.UserInfoEndpoint);
userRequest.Headers.Accept.Add(new MediaTypeWithQualityHeaderValue("application/json"));
userRequest.Headers.Add("Authorization", "Bearer " + accessToken);
var userResponse = await _httpClient.SendAsync(userRequest, Request.CallCancelled);
userResponse.EnsureSuccessStatusCode();
text = await userResponse.Content.ReadAsStringAsync();
dynamic user = JsonConvert.DeserializeObject <NoAuthIdentityResponse>(text);
var context = new NoAuthAuthenticatedContext(Context, user, accessToken)
{
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 (user.Claims != null)
{
foreach (Tuple <string, string> claim in user.Claims)
{
context.Identity.AddClaim(new Claim(claim.Item1, claim.Item2, 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));
}
/// <summary>
/// Invoked whenever 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(NoAuthAuthenticatedContext context)
{
return(OnAuthenticated(context));
}
