/// <summary>
/// Invoked whenever Microsoft 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(SimpleSSOAccountAuthenticatedContext 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];
}
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>("redirect_uri", GenerateRedirectUri()),
new KeyValuePair <string, string>("client_secret", Options.ClientSecret),
new KeyValuePair <string, string>("code", code),
new KeyValuePair <string, string>("grant_type", "authorization_code"),
};
var requestContent = new FormUrlEncodedContent(tokenRequestParameters);
HttpResponseMessage response = await _httpClient.PostAsync(Options.TokenEndpoint, requestContent, Request.CallCancelled);
response.EnsureSuccessStatusCode();
string oauthTokenResponse = await response.Content.ReadAsStringAsync();
JObject oauth2Token = JObject.Parse(oauthTokenResponse);
var accessToken = oauth2Token["access_token"].Value <string>();
// Refresh token is only available when wl.offline_access is request.
// Otherwise, it is null.
var refreshToken = oauth2Token.Value <string>("refresh_token");
var expire = oauth2Token.Value <string>("expires_in");
if (string.IsNullOrWhiteSpace(accessToken))
{
_logger.WriteWarning("Access token was not found");
return(new AuthenticationTicket(null, properties));
}
_httpClient.DefaultRequestHeaders.Authorization = new AuthenticationHeaderValue("Bearer", accessToken);
HttpResponseMessage graphResponse = await _httpClient.GetAsync(
Options.UserInformationEndpoint);
graphResponse.EnsureSuccessStatusCode();
string accountString = await graphResponse.Content.ReadAsStringAsync();
JObject accountInformation = JObject.Parse(accountString);
var context = new SimpleSSOAccountAuthenticatedContext(Context, accountInformation, accessToken,
refreshToken, expire);
context.Identity = new ClaimsIdentity(
new[]
{
new Claim(ClaimTypes.NameIdentifier, context.Id, "http://www.w3.org/2001/XMLSchema#string", Options.AuthenticationType),
new Claim(ClaimTypes.Name, context.Name, "http://www.w3.org/2001/XMLSchema#string", Options.AuthenticationType),
new Claim("urn:simplesso:id", context.Id, "http://www.w3.org/2001/XMLSchema#string", Options.AuthenticationType),
new Claim("urn:simplesso:name", context.Name, "http://www.w3.org/2001/XMLSchema#string", Options.AuthenticationType)
},
Options.AuthenticationType,
ClaimsIdentity.DefaultNameClaimType,
ClaimsIdentity.DefaultRoleClaimType);
if (!string.IsNullOrWhiteSpace(context.Email))
{
context.Identity.AddClaim(new Claim(ClaimTypes.Email, context.Email, "http://www.w3.org/2001/XMLSchema#string", Options.AuthenticationType));
}
await Options.Provider.Authenticated(context);
context.Properties = properties;
return(new AuthenticationTicket(context.Identity, context.Properties));
}
catch (Exception ex)
{
_logger.WriteError("Authentication failed", ex);
return(new AuthenticationTicket(null, properties));
}
}
