1 files changed, 118 insertions, 0 deletions
diff --git a/data/extensions/spyblock@gnu.org/lib/child/subscribeLinks.js b/data/extensions/spyblock@gnu.org/lib/child/subscribeLinks.js
new file mode 100644
index 0000000..a2e729d
--- /dev/null
+++ b/data/extensions/spyblock@gnu.org/lib/child/subscribeLinks.js
@@ -0,0 +1,118 @@
+/*
+ * This file is part of Adblock Plus <https://adblockplus.org/>,
+ * Copyright (C) 2006-2017 eyeo GmbH
+ *
+ * Adblock Plus is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 3 as
+ * published by the Free Software Foundation.
+ *
+ * Adblock Plus is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with Adblock Plus.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+let {Services} = Cu.import("resource://gre/modules/Services.jsm", {});
+
+let {port} = require("messaging");
+
+Services.obs.addObserver(onContentWindow, "content-document-global-created",
+    false);
+onShutdown.add(() =>
+{
+  Services.obs.removeObserver(onContentWindow,
+      "content-document-global-created");
+});
+
+function onContentWindow(subject, topic, data)
+{
+  if (subject instanceof Ci.nsIDOMWindow && subject.top == subject)
+  {
+    let eventTarget = subject.QueryInterface(Ci.nsIInterfaceRequestor)
+                             .getInterface(Ci.nsIWebNavigation)
+                             .QueryInterface(Ci.nsIDocShell)
+                             .chromeEventHandler;
+    if (eventTarget)
+      eventTarget.addEventListener("click", onClick, true);
+  }
+}
+
+function onClick(event)
+{
+  if (onShutdown.done)
+    return;
+
+  // Ignore right-clicks
+  if (event.button == 2)
+    return;
+
+  // Search the link associated with the click
+  let link = event.target;
+  while (!(link instanceof Ci.nsIDOMHTMLAnchorElement))
+  {
+    link = link.parentNode;
+
+    if (!link)
+      return;
+  }
+
+  let queryString = null;
+  if (link.protocol == "http:" || link.protocol == "https:")
+  {
+    if (link.host == "subscribe.adblockplus.org" && link.pathname == "/")
+      queryString = link.search.substr(1);
+  }
+  else
+  {
+    // Firefox doesn't populate the "search" property for links with
+    // non-standard URL schemes so we need to extract the query string
+    // manually
+    let match = /^abp:\/*subscribe\/*\?(.*)/i.exec(link.href);
+    if (match)
+      queryString = match[1];
+  }
+
+  if (!queryString)
+    return;
+
+  // This is our link - make sure the browser doesn't handle it
+  event.preventDefault();
+  event.stopPropagation();
+
+  // Decode URL parameters
+  let title = null;
+  let url = null;
+  let mainSubscriptionTitle = null;
+  let mainSubscriptionURL = null;
+  for (let param of queryString.split("&"))
+  {
+    let parts = param.split("=", 2);
+    if (parts.length != 2 || !/\S/.test(parts[1]))
+      continue;
+    switch (parts[0])
+    {
+      case "title":
+        title = decodeURIComponent(parts[1]);
+        break;
+      case "location":
+        url = decodeURIComponent(parts[1]);
+        break;
+      case "requiresTitle":
+        mainSubscriptionTitle = decodeURIComponent(parts[1]);
+        break;
+      case "requiresLocation":
+        mainSubscriptionURL = decodeURIComponent(parts[1]);
+        break;
+    }
+  }
+
+  port.emit("subscribeLinkClick", {
+    title: title,
+    url: url,
+    mainSubscriptionTitle: mainSubscriptionTitle,
+    mainSubscriptionURL: mainSubscriptionURL
+  });
+}