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background.js
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background.js
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console.log("Service worker is running.");
let logs = {};
let attachedTabs = {};
let isPopupOpen = false;
let validTabActive = false;
const processedUrls = new Set();
let currentTabId = null;
let currentTabUrl = null;
let webRequestListener = null;
// initialize storage and leak count badge
function initialize() {
chrome.storage.local.get(["processedUrls"], (result) => {
const storedUrls = result.processedUrls || [];
storedUrls.forEach((url) => processedUrls.add(url));
console.log("Initialized storage:", { processedUrls });
});
getCurrentTab();
}
// set badge text
function setBadgeText(tabId, text) {
if (tabId !== null) {
chrome.action.setBadgeText({ text });
}
}
// initialize badge
function initializeBadge(tabId) {
if (tabId !== null) {
chrome.storage.local.get([`leakCount_${tabId}`], (result) => {
const initialLeakCount = result[`leakCount_${tabId}`] || 0;
setBadgeText(tabId, initialLeakCount.toString());
});
}
}
// badge count update
chrome.storage.onChanged.addListener((changes) => {
if (currentTabId !== null && changes[`leakCount_${currentTabId}`]) {
const newValue = changes[`leakCount_${currentTabId}`].newValue || 0;
setBadgeText(currentTabId, newValue.toString());
}
});
// updates the leak count of tab
function updateLeakCount(tabId, increment = 0) {
if (tabId !== null) {
chrome.storage.local.get([`leakCount_${tabId}`], (result) => {
const leakCount = (result[`leakCount_${tabId}`] || 0) + increment;
chrome.storage.local.set({ [`leakCount_${tabId}`]: leakCount }, () => {
console.log(`[Tab ID:${tabId}] Leak count total: ${leakCount}`);
if (tabId === currentTabId) {
setBadgeText(tabId, leakCount.toString());
}
});
});
}
}
// reset the leak count of tab
function resetLeakCount(tabId) {
if (tabId !== null) {
chrome.storage.local.set({ [`leakCount_${tabId}`]: 0 }, () => {
console.log(`[Tab ID:${tabId}] Leak count reset to 0`);
if (tabId === currentTabId) {
setBadgeText(tabId, "0");
}
});
}
}
// save processed URLs
function saveProcessedUrls(tabId) {
chrome.storage.local.get([`processedUrls_${tabId}`], (result) => {
const storedUrls = result[`processedUrls_${tabId}`] || [];
const combinedUrls = new Set([...storedUrls, ...processedUrls]);
chrome.storage.local.set(
{ [`processedUrls_${tabId}`]: Array.from(combinedUrls) },
() => {
console.log(`Processed URLs saved to storage for tab ${tabId}`);
}
);
});
}
// leak detection
function webRequestListenerFunction(details) {
const prefixes = [
"https://wayback.archive-it.org/",
"https://partner.archive-it.org/",
"https://archive-it.org/",
];
if (
validTabActive &&
details.tabId === currentTabId &&
!prefixes.some((prefix) => details.url.startsWith(prefix)) &&
!processedUrls.has(details.url)
) {
processedUrls.add(details.url);
saveProcessedUrls(details.tabId);
updateLeakCount(currentTabId, 1);
console.log("Leak detected:", details.url);
}
}
// manage web request listener
function manageWebRequestListener(add) {
if (add && !webRequestListener) {
webRequestListener = webRequestListenerFunction;
chrome.webRequest.onHeadersReceived.addListener(
webRequestListener,
{ urls: ["<all_urls>"] },
["responseHeaders"]
);
} else if (!add && webRequestListener) {
chrome.webRequest.onHeadersReceived.removeListener(webRequestListener);
console.log("WebRequest listener removed.");
webRequestListener = null;
}
}
// get current active tab
function getCurrentTab() {
const queryOptions = { active: true, currentWindow: true };
chrome.tabs.query(queryOptions, (tabs) => {
if (chrome.runtime.lastError) {
console.error(chrome.runtime.lastError);
return;
}
if (tabs.length > 0) {
const tab = tabs[0];
if (tab.id !== currentTabId || tab.url !== currentTabUrl) {
currentTabId = tab.id;
currentTabUrl = tab.url;
console.log(
`Window ID: ${tab.windowId}, Tab ID: ${tab.id}, Tab URL: ${tab.url}`
);
validTabActive = tab.url.startsWith("https://wayback.archive-it.org/");
if (!validTabActive) {
console.log(
tab.url === "chrome://newtab/"
? "No URL. Please enter a valid Archive-It URL."
: "Not a valid Archive-It URL."
);
} else {
console.log("Valid Archive-It URL. Checking for leaks...");
// loads processed URLs for tab from storage
chrome.storage.local.get(
[`processedUrls_${currentTabId}`],
(result) => {
processedUrls.clear();
const storedUrls = result[`processedUrls_${currentTabId}`] || [];
storedUrls.forEach((url) => processedUrls.add(url));
}
);
}
initializeBadge(tab.id);
}
} else {
validTabActive = false;
}
});
}
// listen for tab updates
chrome.tabs.onUpdated.addListener((tabId, changeInfo, tab) => {
if (changeInfo.url) {
processedUrls.clear();
chrome.storage.local.set({ [`processedUrls_${tabId}`]: [] });
validTabActive = tab.url.startsWith("https://wayback.archive-it.org/");
manageWebRequestListener(validTabActive);
if (!validTabActive) {
resetLeakCount(tabId);
}
}
if (changeInfo.status === "complete") {
getCurrentTab();
}
});
// listen for tab activation
chrome.tabs.onActivated.addListener((activeInfo) => {
currentTabId = activeInfo.tabId;
getCurrentTab();
});
// listen for window focus changes
chrome.windows.onFocusChanged.addListener(() => {
getCurrentTab();
});
// add initial web request listener
manageWebRequestListener(true);
// initialize badge for the current tab on service worker startup
initialize();
// save logs to storage
function saveLogs(tabId, logData) {
chrome.storage.local.get([`logs_${tabId}`], (result) => {
const storedLogs = result[`logs_${tabId}`] || [];
storedLogs.push(logData);
chrome.storage.local.set({ [`logs_${tabId}`]: storedLogs });
});
}
// attach debugger to a specific tab based on the user's selection
chrome.runtime.onMessage.addListener((request, sender, sendResponse) => {
if (request.action === "popupOpened") {
isPopupOpen = true;
console.log("Popup opened");
} else if (request.action === "popupClosed") {
isPopupOpen = false;
console.log("Popup closed");
} else if (request.action === "attachDebugger") {
const tabId = request.tabId;
if (attachedTabs[tabId]) {
console.log(`Debugger already attached to tab ${tabId}`);
sendResponse({ success: true });
return;
}
chrome.debugger.attach({ tabId }, "1.3", () => {
if (chrome.runtime.lastError) {
console.warn(
`Failed to attach debugger to tab ${tabId}: ${chrome.runtime.lastError.message}`
);
sendResponse({
success: false,
error: chrome.runtime.lastError.message,
});
return;
}
attachedTabs[tabId] = true;
chrome.debugger.sendCommand({ tabId }, "Log.enable");
chrome.debugger.sendCommand({ tabId }, "Runtime.enable");
// listen for debugger events and log messages
chrome.debugger.onEvent.addListener((source, method, params) => {
if (source.tabId === tabId) {
let message;
if (method === "Log.entryAdded") {
message = `[${params.entry.level}] ${params.entry.text}`;
} else if (method === "Runtime.consoleAPICalled") {
message = `[${params.type}] ${params.args
.map((arg) => arg.value)
.join(" ")}`;
}
if (message) {
console.log(`Tab ${tabId}: ${message}`);
if (!logs[tabId]) {
logs[tabId] = [];
}
logs[tabId].push({ tabId, message });
saveLogs(tabId, { tabId, message });
// sends log message to the popup only if it's open
if (isPopupOpen) {
chrome.runtime.sendMessage(
{ tabId, log: { message } },
(response) => {
if (chrome.runtime.lastError) {
console.warn(
`Failed to send message to popup: ${chrome.runtime.lastError.message}`
);
}
}
);
}
}
}
});
sendResponse({ success: true });
});
return true;
}
});
// handle messages to retrieve logs from storage
chrome.runtime.onMessage.addListener((request, sender, sendResponse) => {
if (request.action === "getLogs") {
const tabId = request.tabId;
chrome.storage.local.get([`logs_${tabId}`], (result) => {
sendResponse(result[`logs_${tabId}`] || []);
});
return true;
}
});
// removes debugger when the tab is closed
chrome.tabs.onRemoved.addListener((tabId) => {
if (attachedTabs[tabId]) {
chrome.debugger.detach({ tabId }, () => {
if (chrome.runtime.lastError) {
console.warn(
`Failed to detach debugger from tab ${tabId}: ${chrome.runtime.lastError.message}`
);
} else {
console.log(`Debugger detached from tab ${tabId}`);
}
});
delete logs[tabId];
delete attachedTabs[tabId];
console.log(`Tab ${tabId} closed and logs cleaned up`);
}
});