Simple-Fido2-WebServer/basic.html at main · NathanJepson/Simple-Fido2-WebServer · GitHub

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<!DOCTYPE html>
<html lang="en">
<head>
  <meta charset="UTF-8">
  <meta name="viewport" content="width=device-width, initial-scale=1.0">
  <title>Login Page</title>
</head>
<body>
  <h1>Login Form</h1>

  <!-- Form to collect username and password -->
  <div>
  <form id="loginForm">
    <label for="username">Username:</label>
    <input type="text" id="username" name="username" required /><br><br>

    <label for="password">Password:</label>
    <input type="password" id="password" name="password" required /><br><br>

    <button type="submit">Submit</button>
  </form>
  </div>
</br>
<div>
  <button onclick="login()">Fido2 Login</button>
</div>
</br></br>
  <a href="/register">
    Register
  </a>

  <script>
    function base64urlToUint8Array(base64url) {
      // Replace - with + and _ with / and pad with =
      let base64 = base64url.replace(/-/g, '+').replace(/_/g, '/');
      while (base64.length % 4 !== 0) {
        base64 += '=';
      }

      const binary = atob(base64);
      const bytes = new Uint8Array(binary.length);
      for (let i = 0; i < binary.length; i++) {
        bytes[i] = binary.charCodeAt(i);
      }
      return bytes;
    }

    function bufferToBase64url(buffer) {
      return btoa(String.fromCharCode(...new Uint8Array(buffer)))
        .replace(/\+/g, "-").replace(/\//g, "_").replace(/=/g, "");
    }

    async function login() {
      const username = document.getElementById('username').value;

      if (!username) {
        alert('Please enter a username');
        return;
      }

      const payload = {
        username: username,
      };

      try {
        const optionsResponse = await fetch('/Fido2-Begin', {
            method: 'POST',
            headers: {
              'Content-Type': 'application/json',
            },
            body: JSON.stringify(payload),
          });

        const options = await optionsResponse.json();

        if (options.error) {
          throw options.error;
        }

        console.log('Authentication options received:', options);

        if (options.allowCredentials) {
          options.allowCredentials = options.allowCredentials.map((cred) => ({
            ...cred,
            id: base64urlToUint8Array(cred.id)
          }));
        }

        const credential = await navigator.credentials.get({
          publicKey: {
            ...options,
            challenge: base64urlToUint8Array(options.challenge)
          }
        });

        const credentialWithUsername = {
          id: credential.id,
          rawId: bufferToBase64url(credential.rawId),
          type: credential.type,
          username: username,
          authenticatorAttachment: credential.authenticatorAttachment,
          clientExtensionResults: credential.clientExtensionResults,
          response: {
            clientDataJSON: bufferToBase64url(credential.response.clientDataJSON),
            authenticatorData: bufferToBase64url(credential.response.authenticatorData),
            signature: bufferToBase64url(credential.response.signature),
            userHandle: bufferToBase64url(credential.response.userHandle)
          }
        };

        console.log('Credential info to send:',credentialWithUsername);

        const verifyResponse = await fetch("/Fido2-End", {
          method: "POST",
          headers: { "Content-Type": "application/json" },
          body: JSON.stringify(credentialWithUsername)
        });

        const result = await verifyResponse.json();

        console.log('Result from server:',result);

        if (result.message) {
          alert(`Login successful! ${result.message}`);

          if (verifyResponse.ok) {
            try {
              window.location.href = "/Box/Service.png";
            } catch (error) {
              console.log(error);
            }
          }
        } else {
          alert(`Error: ${result.error}`);
        }

      } catch (error) {
        console.error('Error: ', error);
        alert('Error: ' + error);
      }
    }

    // Event listener for form submission (non-Fido2 login)
    document.getElementById('loginForm').addEventListener('submit', async function(event) {
      event.preventDefault();  // Prevent form submission from reloading the page

      // Get values from input fields
      const username = document.getElementById('username').value;
      const password = document.getElementById('password').value;

      // Create the payload to send in the POST request
      const payload = {
        username: username,
        password: password
      };

      try {
        // Send POST request to /submit with the payload
        const response = await fetch('/submit', {
          method: 'POST',
          headers: {
            'Content-Type': 'application/json',
          },
          body: JSON.stringify(payload),
        });

        // Parse and handle the JSON response from the server
        const data = await response.json();

        if (data.message) {
          // Alert the success message
          alert(data.message)
          if (response.ok) {
            try {
              window.location.href = "/Box/Service.png";
            } catch (error) {
              console.log(error);
            }
          }
        } else {
          alert(data.error);
        }
      } catch (error) {
        console.error('Error during POST request:', error);
        alert('An error occurred while sending the data.');
      }
    });
  </script>
</body>
</html>