/// <summary>
/// Invoked whenever Google+ succesfully 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(BacklogAuthenticatedContext context)
{
return(OnAuthenticated(context));
}
/// <summary>
/// Invoked whenever Google+ succesfully 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(BacklogAuthenticatedContext 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 = 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>("code", code),
new KeyValuePair <string, string>("redirect_uri", redirectUri),
new KeyValuePair <string, string>("client_id", Options.ClientId),
new KeyValuePair <string, string>("client_secret", Options.ClientSecret)
};
// Get token
var tokenRequest = new HttpRequestMessage(HttpMethod.Post, Options.TokenEndpoint);
tokenRequest.Headers.Accept.Add(new MediaTypeWithQualityHeaderValue("application/json"));
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 response = JsonConvert.DeserializeObject <dynamic>(text);
var accessToken = (string)response.access_token;
var expires = (string)response.expires_in;
string refreshToken = null;
if (response.refresh_token != null)
{
refreshToken = (string)response.refresh_token;
}
var tokenType = (string)response.token_type;
// Get the Backlog user
var userRequest = new HttpRequestMessage(HttpMethod.Get, Options.UserInfoEndpoint);
userRequest.Headers.Accept.Add(new MediaTypeWithQualityHeaderValue("application/json"));
userRequest.Headers.Authorization = new AuthenticationHeaderValue(tokenType, Uri.EscapeDataString(accessToken));
var userResponse = await _httpClient.SendAsync(userRequest, Request.CallCancelled);
userResponse.EnsureSuccessStatusCode();
text = await userResponse.Content.ReadAsStringAsync();
var user = JObject.Parse(text);
var context = new BacklogAuthenticatedContext(Context, user, accessToken, expires, refreshToken)
{
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.MailAddress))
{
context.Identity.AddClaim(new Claim(ClaimTypes.Email, context.MailAddress, 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));
}
