From 6b359c9b8c49b2004c6b0313b40d23acc744455d Mon Sep 17 00:00:00 2001
From: ccd0 <admin@containerchan.org>
Date: Fri, 5 Feb 2016 18:48:01 -0800
Subject: [PATCH] Disrupt loading of ads from malicious/irresponsible
 providers.

---
 package.json            |  7 +++++--
 src/General/$.coffee    |  6 +++++-
 src/General/Main.coffee | 12 ++++++++++++
 src/meta/manifest.json  |  1 +
 src/meta/metadata.js    | 34 +++++++++++++++++++++++++---------
 5 files changed, 48 insertions(+), 12 deletions(-)

diff --git a/package.json b/package.json
index f78bce9e4..c18ab2f42 100644
--- a/package.json
+++ b/package.json
@@ -20,13 +20,16 @@
     "matches": [
       "*://boards.4chan.org/*",
       "*://sys.4chan.org/*",
+      "*://www.4chan.org/*",
       "*://i.4cdn.org/*",
-      "*://www.4chan.org/banned",
-      "*://www.4chan.org/feedback",
       "https://www.google.com/recaptcha/api2/anchor?k=6Ldp2bsSAAAAAAJ5uyx_lx34lJeEpTLVkP5k04qc*",
       "https://www.google.com/recaptcha/api2/frame?*&k=6Ldp2bsSAAAAAAJ5uyx_lx34lJeEpTLVkP5k04qc*",
       "*://www.google.com/recaptcha/api/fallback?k=6Ldp2bsSAAAAAAJ5uyx_lx34lJeEpTLVkP5k04qc*"
     ],
+    "exclude_matches": [
+      "*://www.4chan.org/pass",
+      "*://www.4chan.org/pass?*"
+    ],
     "grants": [
       "GM_getValue",
       "GM_setValue",
diff --git a/src/General/$.coffee b/src/General/$.coffee
index 7df9eda92..9ba79fc6a 100644
--- a/src/General/$.coffee
+++ b/src/General/$.coffee
@@ -314,7 +314,11 @@ $.globalEval = (code) ->
   $.rm script
 
 $.global = (fn) ->
-  $.globalEval "(#{fn})();"
+  if doc
+    $.globalEval "(#{fn})();"
+  else
+    # XXX dwb
+    fn()
 
 $.bytesToString = (size) ->
   unit = 0 # Bytes
diff --git a/src/General/Main.coffee b/src/General/Main.coffee
index e864dc468..ddaa9af8c 100644
--- a/src/General/Main.coffee
+++ b/src/General/Main.coffee
@@ -13,6 +13,18 @@ Main =
           $.ready -> Captcha.fixes.init()
       return
 
+    # Disrupt loading of ads from malicious/irresponsible providers.
+    $.global ->
+      nuke = (obj, prop) ->
+        try
+          Object.defineProperty obj, prop,
+            configurable: false
+            get: -> throw new Error()
+            set: -> throw new Error()
+      for prop in ['atOptions', 'adsterra_key', 'EpmadsConfig', 'epmads_key', 'EpomConfig', 'epom_key', 'exoDocumentProtocol']
+        nuke window, prop
+      return
+
     # Detect multiple copies of 4chan X
     $.on d, '4chanXInitFinished', ->
       if Main.expectInitFinished
diff --git a/src/meta/manifest.json b/src/meta/manifest.json
index edefb1ffb..0008f50f8 100644
--- a/src/meta/manifest.json
+++ b/src/meta/manifest.json
@@ -11,6 +11,7 @@
   "content_scripts": [{
     "js": ["script.js"],
     "matches": <%= JSON.stringify(meta.matches) %>,
+    "exclude_matches": <%= JSON.stringify(meta.exclude_matches) %>,
     "all_frames": true,
     "run_at": "document_start"
   }],
diff --git a/src/meta/metadata.js b/src/meta/metadata.js
index 23981cb7d..04f31e1a4 100644
--- a/src/meta/metadata.js
+++ b/src/meta/metadata.js
@@ -7,16 +7,32 @@
 // @description  <%= description %>
 // @license      MIT; <%= meta.license %> 
 <%=
-  meta.matches.map(function(match) {
-    if (/^\*/.test(match)) {
-      return (
-        '// @include      ' + match.replace(/^\*/, 'http') + '\n' +
-        '// @include      ' + match.replace(/^\*/, 'https')
-      );
-    } else {
-      return '// @include      ' + match;
+  (function() {
+    function expand(items, regex, substitutions) {
+      var results = [];
+      items.forEach(function(item) {
+        if (regex.test(item)) {
+          substitutions.forEach(function(s) {
+            results.push(item.replace(regex, s));
+          });
+        } else {
+          results.push(item);
+        }
+      });
+      return results;
     }
-  }).join('\n')
+    function expandMatches(matches) {
+      return expand(matches, /^\*/, ['http', 'https']);
+    }
+    return [].concat(
+      expandMatches(meta.matches).map(function(match) {
+        return '// @include      ' + match;
+      }),
+      expandMatches(meta.exclude_matches).map(function(match) {
+        return '// @exclude      ' + match;
+      })
+    ).join('\n');
+  })()
 %>
 <%=
   meta.grants.map(function(grant) {