{{book.project.name}} comes with a client-side JavaScript library that can be used to secure HTML5/JavaScript applications. The JavaScript adapter has built-in support for Cordova applications.
A best practice is to load the JavaScript adapter directly from {{book.project.name}} Server as it will automatically be updated when you upgrade the server. If you copy the adapter to your web application instead, make sure you upgrade the adapter only after you have upgraded the server.
One important thing to note about using client-side applications is that the client has to be a public client as there is no secure way to store client
credentials in a client-side application. This makes it very important to make sure the redirect URIs you have configured for the client are correct and as specific as possible.
To use the JavaScript adapter you must first create a client for your application in the {{book.project.name}} Administration Console. Make sure `public`
You also need to configure valid redirect URIs and valid web origins. Be as specific as possible as failing to do so may result in a security vulnerability.
By default to authenticate you need to call the `login` function. However, there are two options available to make the adapter automatically authenticate. You
can pass `login-required` or `check-sso` to the init function. `login-required` will authenticate the client if the user is logged-in to {{book.project.name}}
or display the login page if not. `check-sso` will only authenticate the client if the user is already logged-in, if the user is not logged-in the browser will be
redirected back to the application and remain unauthenticated.
To enable `login-required` set `onLoad` to `login-required` and pass to the init method:
After the user is authenticated the application can make requests to RESTful services secured by {{book.project.name}} by including the bearer token in the
One thing to keep in mind is that the access token by default has a short life expiration so you may need to refresh the access token prior to sending the
request. You can do this by the `updateToken` method. The `updateToken` method returns a promise object which makes it easy to invoke the service only if the
token was successfully refreshed and for example display an error to the user if it wasn't. For example:
By default, the JavaScript adapter creates a hidden iframe that is used to detect if a Single-Sign Out has occurred.
This does not require any network traffic, instead the status is retrieved by looking at a special status cookie.
This feature can be disabled by setting `checkLoginIframe: false` in the options passed to the `init` method.
You should not rely on looking at this cookie directly. It's format can change and it's also associated with the URL of the {{book.project.name}} server, not
With this flow the {{book.project.name}} server returns an authorization code, not an authentication token, to the application. The JavaScript adapter exchanges
{{book.project.name}} also supports the http://openid.net/specs/openid-connect-core-1_0.html#ImplicitFlowAuth[Implicit] flow where an access token
is sent immediately after successful authentication with {{book.project.name}}. This may have better performance than standard flow, as there is no additional
request to exchange the code for tokens, but it has implications when the access token expires.
However, sending the access token in the URL fragment can be a security vulnerability. For example the token could be leaked through web server logs and or
One thing to note is that only an access token is provided and there is no refresh token. This means that once the access token has expired the application
has to do the redirect to the {{book.project.name}} again to obtain a new access token.
The base64 encoded refresh token that can be used to retrieve a new token.
refreshTokenParsed::
The parsed refresh token as a JavaScript object.
timeSkew::
The estimated time difference between the browser time and the {{book.project.name}} server in seconds. This value is just an estimation, but is accurate
enough when determining if a token is expired or not.
responseMode::
Response mode passed in init (default value is fragment).
flow::
Flow passed in init.
responseType::
Response type sent to {{book.project.name}} with login requests. This is determined based on the flow value used during initialization, but can be overridden by setting this value.
* responseMode - Set the OpenID Connect response mode send to {{book.project.name}} server at login request. Valid values are query or fragment . Default value is fragment, which means that after successful authentication will {{book.project.name}} redirect to javascript application with OpenID Connect parameters added in URL fragment. This is generally safer and recommended over query.
* prompt - By default the login screen is displayed if the user is not logged-in to {{book.project.name}}. To only authenticate to the application if the user is already logged-in and not display the login page if the user is not logged-in, set this option to `none`. To always require re-authentication and ignore SSO, set this option to `login` .
* maxAge - Used just if user is already authenticated. Specifies maximum time since the authentication of user happened. If user is already authenticated for longer time than `maxAge`, the SSO is ignored and he will need to re-authenticate again.
* onTokenExpired - Called when the access token is expired. If a refresh token is available the token can be refreshed with updateToken, or in cases where it is not (that is, with implicit flow) you can redirect to login screen to obtain a new access token.
