/// <summary>
/// Invoked whenever Evernote 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(EvernoteAuthenticatedContext context)
{
return(OnAuthenticated(context));
}
protected override async Task <AuthenticationTicket> AuthenticateCoreAsync()
{
AuthenticationProperties properties = null;
try
{
var query = Request.Query;
var protectedRequestToken = Request.Cookies[StateCookie];
var requestToken = Options.StateDataFormat.Unprotect(protectedRequestToken);
if (requestToken == null)
{
_logger.WriteWarning("Invalid state");
return(null);
}
properties = requestToken.Properties;
var returnedToken = query.Get("oauth_token");
if (string.IsNullOrWhiteSpace(returnedToken))
{
_logger.WriteWarning("Missing oauth_token");
return(new AuthenticationTicket(null, properties));
}
if (returnedToken != requestToken.Token)
{
_logger.WriteWarning("Unmatched token");
return(new AuthenticationTicket(null, properties));
}
var oauthVerifier = query.Get("oauth_verifier");
if (string.IsNullOrWhiteSpace(oauthVerifier))
{
_logger.WriteWarning("Missing or blank oauth_verifier");
return(new AuthenticationTicket(null, properties));
}
// Retrieve access token
var accessToken = await ObtainAccessTokenAsync(Options.AppKey, Options.AppSecret, requestToken, oauthVerifier);
// Retrieve user infos
var userName = GetUserInfos(accessToken);
var context = new EvernoteAuthenticatedContext(Context, accessToken)
{
Identity = new ClaimsIdentity(
Options.AuthenticationType,
ClaimsIdentity.DefaultNameClaimType,
ClaimsIdentity.DefaultRoleClaimType)
};
if (!string.IsNullOrEmpty(context.UserId))
{
context.Identity.AddClaim(new Claim(ClaimTypes.NameIdentifier, context.UserId, XmlSchemaString, Options.AuthenticationType));
}
if (!string.IsNullOrEmpty(userName))
{
context.Identity.AddClaim(new Claim(ClaimTypes.Name, userName, XmlSchemaString, Options.AuthenticationType));
}
if (!string.IsNullOrEmpty(context.NoteStoreUrl))
{
context.Identity.AddClaim(new Claim("urn:evernote:notestoreuri", context.NoteStoreUrl, XmlSchemaString, Options.AuthenticationType));
}
if (!string.IsNullOrEmpty(context.AccessToken))
{
context.Identity.AddClaim(new Claim("urn:evernote:accesstoken", context.AccessToken, XmlSchemaString, Options.AuthenticationType));
}
context.Properties = requestToken.Properties;
Response.Cookies.Delete(StateCookie);
await Options.Provider.Authenticated(context);
return(new AuthenticationTicket(context.Identity, context.Properties));
}
catch (Exception ex)
{
_logger.WriteError("Authentication failed", ex);
return(new AuthenticationTicket(null, properties));
}
}