casdoor-js-sdk
v0.16.0
Published
Javascript client SDK for Casdoor
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casdoor-js-sdk
This is Casdoor's SDK for js will allow you to easily connect your application to the Casdoor authentication system without having to implement it from scratch.
Casdoor SDK is very simple to use. We will show you the steps below.
Usage in NPM environment
Installation
# NPM
npm i casdoor-js-sdk
# Yarn
yarn add casdoor-js-sdk
Init SDK
Initialization requires 5 parameters, which are all string type:
| Name (in order) | Must | Description |
|------------------|------|------------------------------------------------------------------------------------------------|
| serverUrl | Yes | your Casdoor server URL |
| clientId | Yes | the Client ID of your Casdoor application |
| appName | Yes | the name of your Casdoor application |
| organizationName | Yes | the name of the Casdoor organization connected with your Casdoor application |
| redirectPath | No | the path of the redirect URL for your Casdoor application, will be /callback
if not provided |
| signinPath | No | the path of the signin URL for your Casdoor application, will be /api/signin
if not provided |
import {SDK, SdkConfig} from 'casdoor-js-sdk'
const sdkConfig: SdkConfig = {
serverUrl: "https://door.casbin.com",
clientId: "014ae4bd048734ca2dea",
appName: "app-casnode",
organizationName: "casbin",
redirectPath: "/callback",
signinPath: "/api/signin",
}
const sdk = new SDK(sdkConfig)
// call sdk to handle
Usage in vanilla Javascript
Import and init SDK
Initialization parameters are consistent with the previous node.js section:
<!--init the SDK-->
<script type="module">
//Import from cdn(you can choose the appropriate cdn source according to your needs), or just from the local(download the casdoor-js-sdk first)
import SDK from 'https://unpkg.com/casdoor-js-sdk@latest/lib/esm/sdk.js'
const sdkConfig = {
serverUrl: "https://door.casbin.com",
clientId: "014ae4bd048734ca2dea",
appName: "app-casnode",
organizationName: "casbin",
redirectPath: "/callback",
signinPath: "/api/signin",
}
window.sdk = new SDK(sdkConfig)
</script>
Call functions in SDK
<script type="text/javascript">
function gotoSignUpPage() {
window.location.href = sdk.getSigninUrl()
}
</script>
API reference interface
Get sign up url
getSignupUrl(enablePassword)
Return the casdoor url that navigates to the registration screen
Get sign in url
getSigninUrl()
Return the casdoor url that navigates to the login screen
Get user profile page url
getUserProfileUrl(userName, account)
Return the url to navigate to a specific user's casdoor personal page
Get my profile page url
getMyProfileUrl(account)
Sign in
signin(serverUrl, signinPath)
Handle the callback url from casdoor, call the back-end api to complete the login process
Determine whether silent sign-in is being used
isSilentSigninRequested()
We usually use this method to determine if silent login is being used. By default, if the silentSignin parameter is included in the URL and equals one, this method will return true. Of course, you can also use any method you prefer.
silentSignin
silentSignin(onSuccess, onFailure)
First, let's explain the two parameters of this method, which are the callback methods for successful and failed login. Next, I will describe the execution process of this method. We will create a hidden "iframe" element to redirect to the login page for authentication, thereby achieving the effect of silent sign-in.
popupSignin
popupSignin(serverUrl, signinPath)
Popup a window to handle the callback url from casdoor, call the back-end api to complete the login process and store the token in localstorage, then reload the main window. See Demo: casdoor-nodejs-react-example.
OAuth2 PKCE flow sdk (for SPA without backend)
Start the authorization process
Typically, you just need to go to the authorization url to start the process. This example is something that might work in an SPA.
signin_redirect();
You may add additional query parameters to the authorize url by using an optional second parameter:
const additionalParams = {test_param: 'testing'};
signin_redirect(additionalParams);
Trade the code for a token
When you get back here, you need to exchange the code for a token.
sdk.exchangeForAccessToken().then((resp) => {
const token = resp.access_token;
// Do stuff with the access token.
});
As with the authorizeUrl method, an optional second parameter may be passed to the exchangeForAccessToken method to send additional parameters to the request:
const additionalParams = {test_param: 'testing'};
sdk.exchangeForAccessToken(additionalParams).then((resp) => {
const token = resp.access_token;
// Do stuff with the access token.
});
Parse the access token
Once you have an access token, you can parse it into JWT header and payload.
const result = sdk.parseAccessToken(accessToken);
console.log("JWT algorithm: " + result.header.alg);
console.log("User organization: " + result.payload.owner);
console.log("User name: " + result.payload.name);
Get user info
Once you have an access token, you can use it to get user info.
getUserInfo(accessToken).then((resp) => {
const userInfo = resp;
// Do stuff with the user info.
});
Refresh access token
You could use a refresh token, to get a new token from the oauth server when token expired.
sdk.refreshAccessToken(refreshToken).then((resp) => {
const token = resp.access_token;
// Do stuff with new access token
});
A note on Storage
By default, this package will use sessionStorage to persist the pkce_state. On (mostly) mobile devices there's a higher chance users are returning in a different browser tab. E.g. they kick off in a WebView & get redirected to a new tab. The sessionStorage will be empty there.
In this case it you can opt in to use localStorage instead of sessionStorage:
import {SDK, SdkConfig} from 'casdoor-js-sdk'
const sdkConfig = {
// ...
storage: localStorage, // any Storage object, sessionStorage (default) or localStorage
}
const sdk = new SDK(sdkConfig)
More examples
To see how to use casdoor frontend SDK with casdoor backend SDK, you can refer to examples below:
casnode: casdoor-js-sdk + casdoor-go-sdk
casdoor-python-vue-sdk-example: casdoor-vue-sdk + casdoor-python-sdk
A more detailed description can be moved to:casdoor-sdk