private string BuildAuthenticationUrl(LogoutParameters parameters, LogoutState state)
{
return(new UrlBuilder(parameters.EndSessionEndpoint)
.Add("post_logout_redirect_uri", parameters.RedirectUri)
.Add("id_token_hint", parameters.IdTokenHint, parameters.RedirectUri.IsNotEmpty())
.Add("state", state.State)
.Add(parameters.AdditionalParameters)
.ToString());
}
private void EnsureValidParameters(LogoutParameters parameters)
{
HandleErrors(nameof(EnsureValidParameters), () =>
{
if (parameters.EndSessionEndpoint.IsEmpty())
{
throw Logger.Exception("No End Session Endpoint passed");
}
});
}
public LogoutRequest CreateLogoutRequest(LogoutParameters parameters)
{
return(HandleErrors(nameof(CreateLogoutRequest), () =>
{
var state = new LogoutState {
State = new Crypto().CreateUniqueHexadecimal(32)
};
var url = BuildAuthenticationUrl(parameters, state);
return new LogoutRequest {
Url = url, State = state, Parameters = parameters
};
}));
}
private void EnsureValidParameters(LogoutParameters parameters)
{
HandleErrors(nameof(EnsureValidParameters), () =>
{
if (parameters.EndSessionEndpoint.IsEmpty())
{
throw Logger.Exception("No End Session Endpoint passed");
}
if (Settings.StorageType.IsMemory() && parameters.InteractionType.IsRedirect())
{
throw Logger.Exception("Interaction type cannot be redirect using memory storage");
}
});
}
public LogoutRequest CreateLogoutRequest(LogoutParameters parameters)
{
return(HandleErrors(nameof(CreateLogoutRequest), () =>
{
var requestState = CreateOidcRequestState(new Crypto(), parameters.StateData);
var state = new LogoutState
{
State = Base64Url.Serialize(requestState, "oidc logout request state")
};
var url = BuildLogoutUrl(parameters, state);
return new LogoutRequest {
Url = url, State = state, Parameters = parameters
};
}));
}
