From eceae7187a6f0e9510bc1165f6977256b87f490f Mon Sep 17 00:00:00 2001
From: hackademix
Date: Sun, 1 Jul 2018 01:01:23 +0200
Subject: Initial commit starting at version 10.1.8.3rc4.

---
 src/content/content.js | 107 +++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 107 insertions(+)
 create mode 100644 src/content/content.js

(limited to 'src/content/content.js')

diff --git a/src/content/content.js b/src/content/content.js
new file mode 100644
index 0000000..5ba5076
--- /dev/null
+++ b/src/content/content.js
@@ -0,0 +1,107 @@
+'use strict';
+
+ // debug = () => {}; // XPI_ONLY
+
+var _ = browser.i18n.getMessage;
+
+var canScript = true;
+
+var embeddingDocument = false;
+
+var seen = {
+  _map: new Map(),
+  _list: null,
+  record(event) {
+    let key = event.request.key;
+    if (this._map.has(key)) return;
+    this._map.set(key, event);
+    this._list = null;
+  },
+  get list() {
+    return this._list || (this._list = [...this._map.values()]);
+  }
+}
+
+var handlers = {
+
+  seen(event) {
+    let {allowed, policyType, request, ownFrame} = event;
+    if (window.top === window) {
+      seen.record(event);
+    }
+    if (ownFrame) {
+      init();
+      if (!allowed && PlaceHolder.canReplace(policyType)) {
+        request.embeddingDocument = embeddingDocument;
+        PlaceHolder.create(policyType, request);
+      }
+    }
+  },
+
+  collect(event) {
+    let list = seen.list;
+    debug("COLLECT", list);
+    return list;
+  }
+};
+
+browser.runtime.onMessage.addListener(async event => {
+  if (event.type in handlers) {
+    debug("Received message", event);
+    return handlers[event.type](event);
+  }
+});
+
+if (document.readyState !== "complete") {
+  let pageshown = e => {
+    removeEventListener("pageshow", pageshown);
+    init();
+  };
+  addEventListener("pageshow", pageshown);
+} else init();
+
+let notifyPage = () => {
+  if (document.readyState === "complete") {
+    browser.runtime.sendMessage({type: "pageshow", seen, canScript});
+    return true;
+  }
+  return false;
+}
+
+
+async function init() {
+  try {
+    canScript = await browser.runtime.sendMessage({type: "canScript"});
+    init = () => {};
+    debug("canScript:", canScript);
+  } catch (e) {
+    // background script not initialized yet?
+    setTimeout(() => init(), 100);
+    return;
+  }
+
+  if (!canScript) onScriptDisabled();
+  seen.record({
+      request: {
+        key: "noscript-probe",
+        url: document.URL,
+        documentUrl: document.URL,
+        type: window === window.top ? "main_frame" : "script",
+      },
+      allowed: canScript
+    }
+  );
+
+  debug(`Loading NoScript in document %s, scripting=%s, content type %s readyState %s`,
+    document.URL, canScript, document.contentType, document.readyState);
+
+  if (/application|video|audio/.test(document.contentType)) {
+    debug("Embedding document detected");
+    embeddingDocument = true;
+    window.addEventListener("pageshow", e => {
+      debug("Active content still in document %s: %o", document.url, document.querySelectorAll("embed,object,video,audio"));
+    }, true);
+    // document.write("<plaintext>");
+  }
+  notifyPage() || addEventListener("pageshow", notifyPage);
+};
-- 
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