spkprav · May 8, 2024 04:13
diff --git a/cookieLoginChromeExtension.js b/cookieLoginChromeExtension.js
 // This goes into background/index.js
 function parseJwt(token) {
  // Decode base64url encoded string
  function base64UrlDecode(str) {
      return decodeURIComponent(
          atob(str.replace(/_/g, "/").replace(/-/g, "+"))
          .split("")
          .map(c => '%' + c.charCodeAt(0).toString(16).padStart(2, '0'))
          .join("")
      );
  }

  try {
      // Split the JWT token into its three parts
      const parts = token.split(".");
      if (parts.length !== 3) {
          throw new Error("Invalid JWT token");
      }

      // Decode the payload
      const payload = JSON.parse(base64UrlDecode(parts[1]));

      // Check the expiration time
      const currentTime = Math.floor(Date.now() / 1000); // Current time in seconds since epoch
      const isExpired = payload.exp && payload.exp < currentTime;

      return {
          payload,
          isExpired,
      };
  } catch (error) {
      console.error("Error decoding JWT token:", error);
      return null;
  }
 }

 chrome.runtime.onMessage.addListener((request, sender, sendResponse) => {
  if (request.action === 'validLogin') {
    try {
      chrome.cookies.get({ url: 'https://yourdomain', name: 'yourcookiename' }, (cookie) => {
        const result = cookie ? parseJwt(cookie.value) : null;
        if (result && !result.isExpired) {
          console.log("Token Payload:", result.payload);
          console.log("Is Token Expired?", result.isExpired);
          sendResponse({ isValid: true });
        } else {
          console.log("Failed to decode the token");
          sendResponse({ isValid: false });
        }
      });
    } catch (error) {
      sendResponse({ isValid: false });
    }
    return true; // keep the message channel open until sendResponse is called
  }
 });

 // This goes into your content script
 let isLoggedIn = false;
 chrome.runtime.sendMessage({ action: 'validLogin' }, (response) => {
  isLoggedIn = response.isValid;
 });

 // This goes into manifest
 {
  permissions: ['cookies'],
  host_permissions: [
    "https://yourdomain/*"
  ],
  externally_connectable: {
    matches: [
      'https://yourdomain/*',
    ],
  }
 }
	// This goes into background/index.js
	function parseJwt(token) {
	// Decode base64url encoded string
	function base64UrlDecode(str) {
	return decodeURIComponent(
	atob(str.replace(/_/g, "/").replace(/-/g, "+"))
	.split("")
	.map(c => '%' + c.charCodeAt(0).toString(16).padStart(2, '0'))
	.join("")
	);
	}

	try {
	// Split the JWT token into its three parts
	const parts = token.split(".");
	if (parts.length !== 3) {
	throw new Error("Invalid JWT token");
	}

	// Decode the payload
	const payload = JSON.parse(base64UrlDecode(parts[1]));

	// Check the expiration time
	const currentTime = Math.floor(Date.now() / 1000); // Current time in seconds since epoch
	const isExpired = payload.exp && payload.exp < currentTime;

	return {
	payload,
	isExpired,
	};
	} catch (error) {
	console.error("Error decoding JWT token:", error);
	return null;
	}
	}

	chrome.runtime.onMessage.addListener((request, sender, sendResponse) => {
	if (request.action === 'validLogin') {
	try {
	chrome.cookies.get({ url: 'https://yourdomain', name: 'yourcookiename' }, (cookie) => {
	const result = cookie ? parseJwt(cookie.value) : null;
	if (result && !result.isExpired) {
	console.log("Token Payload:", result.payload);
	console.log("Is Token Expired?", result.isExpired);
	sendResponse({ isValid: true });
	} else {
	console.log("Failed to decode the token");
	sendResponse({ isValid: false });
	}
	});
	} catch (error) {
	sendResponse({ isValid: false });
	}
	return true; // keep the message channel open until sendResponse is called
	}
	});

	// This goes into your content script
	let isLoggedIn = false;
	chrome.runtime.sendMessage({ action: 'validLogin' }, (response) => {
	isLoggedIn = response.isValid;
	});

	// This goes into manifest
	{
	permissions: ['cookies'],
	host_permissions: [
	"https://yourdomain/*"
	],
	externally_connectable: {
	matches: [
	'https://yourdomain/*',
	],
	}
	}