hid-approve-offline/server.js at main · hidglobal/hid-approve-offline · GitHub

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require('dotenv').config();
const express = require('express');
const https = require('https');
const fs = require('fs');
const qr = require('qrcode');

const args = process.argv.slice(2);
let clientId = process.env.HID_CLIENT_ID;
let clientSecret = process.env.HID_CLIENT_SECRET;
let pfxPassphrase = process.env.P12_PASSPHRASE;

if (args.length == 3) {
  pfxPassphrase = args[2];
}

if (args.length >= 2) {
  clientId = args[0];
  clientSecret = args[1];
}

const app = express();
const port = process.env.PORT || 443;

app.use(express.urlencoded({ extended: true }));
app.use(express.json());
app.use(express.static('public'));

app.post('/register', (req, res) => {
  console.log(`Registering user: ${req.body.username}`);
  const authBasic = Buffer.from(`${clientId}:${clientSecret}`, 'utf8').toString('base64');

  // 1. Get application access token
  fetch(`${process.env.HID_AUTH_URL}/token`, {
    method: 'POST',
    headers: {
      'Authorization': `Basic ${authBasic}`,
      'Content-Type': 'application/x-www-form-urlencoded',
    },
    body: 'grant_type=client_credentials'
  })
  .then((response) => {
    if (response.ok) {
      response.json().then((data) => {
        let access_token = data.access_token;
        if (typeof(access_token) === 'undefined') {
          console.log('Error: ' + JSON.stringify(data));
          res.status(500).send('Server is not configured correctly');
          return;
        }
        // 2. Dummy LDAP authentication to force creation of passthrough record
        fetch(`${process.env.HID_AUTH_URL}/token`, {
          method: 'POST',
          headers: {
            'Authorization': `Bearer ${access_token}`,
            'Content-Type': 'application/x-www-form-urlencoded',
          },
          body: `grant_type=password&username=${req.body.username}&password=invalid`
        })
        .then((response) => {
          console.log(`Dummy LDAP authentication: ${response.status} ${response.statusText}`);
          // 3. Find the user
          fetch(`${process.env.HID_SCIM_URL}/Users/.search`, {
            method: 'POST',
            headers: {
              'Authorization': `Bearer ${access_token}`,
              'Content-Type': 'application/scim+json'
            },
            body: JSON.stringify({filter: `userName eq "${req.body.username}"`})
          })
          .then((response) => {
            if (response.ok) {
              response.json().then((data) => {
                if (data.totalResults === 0) {
                  console.log(`User ${req.body.username} not found`);
                  res.status(404).send(`
                    <html>
                      <header><title>Not Found</title><link rel="stylesheet" type="text/css" href="/css/styles.css"></header>
                      <body><div class="page page--full-width"><main class="page__content"><div class="region region--content"><section class="section section--layout-onecol">
                        <h2>Not Found!</h2>
                        <p>The user <strong>${req.body.username}</strong> was not found!</p>
                        <div>
                        <a href="/">Go back</a>
                        </div>
                      </section></div></main></div></body>
                    </html>
                  `);
                  return;
                }
                console.log(`User: ${data.resources[0].externalId} (${data.resources[0].id})`);
                let userid = data.resources[0].id;
                // 3. Create provisioning request
                const provisionRequest = {
                  schemas: [
                    "urn:hid:scim:api:idp:2.0:Provision"
                  ],
                  deviceType: "DT_APPR_OT",
                  owner: {
                    value: userid
                  },
                  attributes: [
                    {
                      name: "AUTH_TYPE",
                      value: "AT_EMPOTP",
                      readOnly: false
                    }
                  ]
                };
                fetch(`${process.env.HID_SCIM_URL}/Device/Provision`, {
                  method: 'POST',
                  headers: {
                    'Authorization': `Bearer ${access_token}`,
                    'Content-Type': 'application/scim+json'
                  },
                  body: JSON.stringify(provisionRequest)
                })
                .then((response) => {
                  if (response.ok) {
                    response.json().then((data) => {
                      let payload = data.attributes[0].value;
                      let code = [...payload.match(/secret=(.*)&issuer/)];
                      console.log(`Activation code ${code ? 'OK' : 'Error'}`);
                      let deepLink = `https://approve.app.link/activate?name=HID%20Approve%20OTP&qrcode=${Buffer.from(payload).toString('base64')}`;
                      qr.toDataURL(deepLink, (err, url) => {
                        res.send(`
                          <html>
                            <header><title>Activation Link</title><link rel="stylesheet" type="text/css" href="/css/styles.css"></header>
                            <body><div class="page page--full-width"><main class="page__content"><div class="region region--content"><section class="section section--layout-onecol">
                              <h2>Activation Link</h2>
                              <p>Send the link below to the user so they can register HID Approve</p>
                              <div>
                              <a href="${deepLink}">${deepLink}</a>
                              </div>
                              <div>
                              <img src="${url}" alt="QR Code" />
                              </div>
                              <p class="description">Alternatively, you can ask them to install <a href="https://www.hidglobal.com/drivers/41692">HID Approve</a> and manually enter the following code: ${code[1]}</p>
                            </section></div></main></div></body>
                          </html>
                        `);
                      });
                    });
                  }
                })
              });
            }
          })
        });
      });
    } else {
      console.log('Error:', response.statusText);
    }
  })
  .catch((error) => {
    console.error('Error:', error);
  });
});

// Check if the PFX file exists
const pfxPath = 'server_cert.pfx';
if (fs.existsSync(pfxPath)) {
  // Load SSL certificate from PFX file
  const pfx = fs.readFileSync(pfxPath);
  const passphrase = pfxPassphrase;
  const credentials = { pfx: pfx, passphrase: passphrase };

  // Create HTTPS server
  const httpsServer = https.createServer(credentials, app);
  httpsServer.listen(port, () => {
    console.log(`HTTPS Server is running on port ${port}`);
  });
} else {
  // Create HTTP server
  const httpPort = process.env.HTTP_PORT || 3000;
  app.listen(httpPort, () => {
    console.log(`HTTP Server is running on port ${httpPort}`);
  });
}