Electron App

An Electron app example for Casdoor.

How to run example

Initialization

You need to initialize 6 parameters, which are all string type:

Name	Description	Path
serverUrl	your Casdoor server URL	src/App.js
clientId	the Client ID of your Casdoor application	src/App.js
appName	the name of your Casdoor application	src/App.js
redirectPath	the path of the redirect URL for your Casdoor application, will be /callback if not provided	src/App.js
clientSecret	the Client Secret of your Casdoor application	src/App.js
casdoorServiceDomain	your Casdoor server URL	public/electron.js

If you don't set these parameters, this project will use the Casdoor online demo as the default Casdoor server and use the Casnode as the default Casdoor application.

Available commands

In the project directory, you can run:

npm run dev or yarn dev

Builds the electron app and run this app.

npm run make or yarn make

Package and distribute your application. It will create the out folder where your package will be located:

// Example for macOS out/  
├── out/make/zip/darwin/x64/casdoor-electron-example-darwin-x64-1.0.0.zip  
├── ...  
└── out/casdoor-electron-example-darwin-x64/casdoor-electron-example.app/Contents/MacOS/casdoor-electron-example

Prview

After you run this electron application, a new window will be showed on your desktop. If you click Login with Casdoor button, your default browser will be opened automatically and show the login page. After you login successfully, your electron application will be opened and your user name will be showed on your application. You can preview the whole process by the gif image below.

How to integrate

Set the custom protocol

Firstly, you need to set the custom protocol called casdoor.

const protocol = "casdoor";

if (process.defaultApp) {
  if (process.argv.length >= 2) {
    app.setAsDefaultProtocolClient(protocol, process.execPath, [
      path.resolve(process.argv[1]),
    ]);
  }
} else {
  app.setAsDefaultProtocolClient(protocol);
}

This will help the browser to open your electron application and send the login info to the electron application.

Open the login url by the browser

const serverUrl = "https://door.casdoor.com";
const appName = "app-casnode";
const redirectPath = "/callback";
const clientId = "014ae4bd048734ca2dea";
const clientSecret = "f26a4115725867b7bb7b668c81e1f8f7fae1544d";

const redirectUrl = "casdoor://localhost:3000" + redirectPath;

const signinUrl = `${serverUrl}/login/oauth/authorize?client_id=${clientId}&response_type=code&redirect_uri=${encodeURIComponent(redirectUrl)}&scope=profile&state=${appName}&noRedirect=true`;

shell.openExternal(signinUrl); //Open the login url by the browser

You can change the first 5 parameters.

Listen to the open application event

After you login successfully in the browser, the browser will open your electron application. You need to listen to the open application event.

const gotTheLock = app.requestSingleInstanceLock();
const ProtocolRegExp = new RegExp(`^${protocol}://`);

if (!gotTheLock) {
  app.quit();
} else {
  app.on("second-instance", (event, commandLine, workingDirectory) => {
    if (mainWindow) {
      if (mainWindow.isMinimized()) mainWindow.restore();
      mainWindow.focus();
      commandLine.forEach((str) => {
        if (ProtocolRegExp.test(str)) {
          const params = url.parse(str, true).query;
          if (params && params.code) {
            store.set("casdoor_code", params.code);
            mainWindow.webContents.send("receiveCode", params.code);
          }
        }
      });
    }
  });
  app.whenReady().then(createWindow);

  app.on("open-url", (event, openUrl) => {
    const isProtocol = ProtocolRegExp.test(openUrl);
    if (isProtocol) {
      const params = url.parse(openUrl, true).query;
      if (params && params.code) {
        store.set("casdoor_code", params.code);
        mainWindow.webContents.send("receiveCode", params.code);
      }
    }
  });
}

You can get the code from the browser, which is casdoor_code or params.code.

Parse the code and get the user info

async function getUserInfo(clientId, clientSecret, code) {
  const { data } = await axios({
    method: "post",
    url: authCodeUrl,
    headers: {
      "content-type": "application/json",
    },
    data: JSON.stringify({
      grant_type: "authorization_code",
      client_id: clientId,
      client_secret: clientSecret,
      code: code,
    }),
  });
  const resp = await axios({
    method: "get",
    url: `${getUserInfoUrl}?accessToken=${data.access_token}`,
  });
  return resp.data;
}

ipcMain.handle("getUserInfo", async (event, clientId, clientSecret) => {
  const code = store.get("casdoor_code");
  const userInfo = await getUserInfo(clientId, clientSecret, code);
  store.set("userInfo", userInfo);
  return userInfo;
});

Finally, you can parse the code and get the user info just by following the OAuth docs page.