1 files changed, 83 insertions, 0 deletions
diff --git a/webext/chrome/background.js b/webext/chrome/background.js
new file mode 100644
index 0000000..faa201f
--- /dev/null
+++ b/webext/chrome/background.js
@@ -0,0 +1,83 @@
+// Background service worker for Cerberus Chrome/Edge extension (MV3)
+
+function connectNative() {
+  try {
+    return chrome.runtime.connectNative('com.cerberus.pm');
+  } catch (e) {
+    console.error('Native host connection failed', e);
+    return null;
+  }
+}
+
+function nativeRequest(payload) {
+  return new Promise((resolve, reject) => {
+    const port = connectNative();
+    if (!port) {
+      reject(new Error('no_native_host'));
+      return;
+    }
+    const onMessage = (resp) => {
+      port.onMessage.removeListener(onMessage);
+      try { port.disconnect(); } catch {}
+      resolve(resp);
+    };
+    const onDisconnect = () => {
+      port.onMessage.removeListener(onMessage);
+      reject(new Error('disconnected'));
+    };
+    port.onMessage.addListener(onMessage);
+    port.onDisconnect.addListener(onDisconnect);
+    port.postMessage(payload);
+  });
+}
+
+async function getActiveTab() {
+  const tabs = await chrome.tabs.query({ active: true, currentWindow: true });
+  return tabs[0];
+}
+
+async function getOriginForActiveTab() {
+  const tab = await getActiveTab();
+  try {
+    const url = new URL(tab.url);
+    return url.origin;
+  } catch (e) {
+    return tab.url;
+  }
+}
+
+chrome.runtime.onMessage.addListener((message, sender, sendResponse) => {
+  (async () => {
+    if (!message || !message.type) return;
+    if (message.type === 'GET_PAGE_FORMS') {
+      const tab = await getActiveTab();
+      chrome.tabs.sendMessage(tab.id, { type: 'SCAN_FORMS' }, sendResponse);
+      return true;
+    }
+    if (message.type === 'FILL_CREDENTIALS') {
+      const tab = await getActiveTab();
+      chrome.tabs.sendMessage(tab.id, { type: 'FILL_CREDENTIALS', payload: message.payload }, sendResponse);
+      return true;
+    }
+    if (message.type === 'GET_CREDENTIALS_FOR_TAB') {
+      const origin = await getOriginForActiveTab();
+      try {
+        const resp = await nativeRequest({ type: 'get_for_origin', origin, include_password: true });
+        sendResponse(resp);
+      } catch (e) {
+        sendResponse({ ok: false, error: String(e) });
+      }
+      return true;
+    }
+    if (message.type === 'PING_NATIVE') {
+      try {
+        const resp = await nativeRequest({ type: 'ping' });
+        sendResponse(resp);
+      } catch (e) {
+        sendResponse({ ok: false, error: String(e) });
+      }
+      return true;
+    }
+  })();
+  return true; // keep channel open for async
+});