commit 4d6d63bf19ad4d439ba32a84f49d9bdd9f4fd43b
Author: Lukas Winkler <l.winkler@mailbox.org>
Date:   Wed Sep 20 15:33:18 2017 +0200

    first working version

diff --git a/.gitignore b/.gitignore
new file mode 100644
index 0000000..9f11b75
--- /dev/null
+++ b/.gitignore
@@ -0,0 +1 @@
+.idea/
diff --git a/background.js b/background.js
new file mode 100644
index 0000000..a6f8fcd
--- /dev/null
+++ b/background.js
@@ -0,0 +1,38 @@
+function handleMessage(request, sender, sendResponse) {
+    var tabId = sender.tab.id;
+    if (request.typo3) {
+        chrome.storage.local.get(request.url, function (result) {
+            var data = result[request.url];
+            if (!data || Date.now() - data.updated > 1000 * 60) {
+                var xmlHttp = new XMLHttpRequest();
+                xmlHttp.onreadystatechange = function () {
+                    var found;
+                    if (xmlHttp.readyState === 4 && xmlHttp.status === 200) {
+                        found = true;
+                        chrome.browserAction.enable(tabId);
+                    } else {
+                        found = false;
+                        chrome.browserAction.disable(tabId);
+                    }
+                    var data = {};
+                    data[request.url] = {found: found, modified: false, updated: Date.now()};
+                    chrome.storage.local.set(data);
+                };
+                xmlHttp.open("GET", request.url + "/typo3conf/ext/mask/ext_icon.gif", true);
+                xmlHttp.send();
+            } else {
+                if (data.found) {
+                    chrome.browserAction.enable(tabId);
+                    console.info("found");
+                } else {
+                    chrome.browserAction.disable(tabId);
+                }
+            }
+        });
+    }
+    else {
+        chrome.browserAction.disable(tabId);
+    }
+}
+
+chrome.runtime.onMessage.addListener(handleMessage);
diff --git a/contentscript.js b/contentscript.js
new file mode 100644
index 0000000..e777ffc
--- /dev/null
+++ b/contentscript.js
@@ -0,0 +1,4 @@
+chrome.runtime.sendMessage({
+    typo3: document.head.innerHTML.indexOf("This website is powered by TYPO3") !== -1,
+    url: window.location.protocol + "//" + window.location.host
+});
diff --git a/logo.128.png b/logo.128.png
new file mode 100644
index 0000000..9b27688
Binary files /dev/null and b/logo.128.png differ
diff --git a/logo.svg b/logo.svg
new file mode 100644
index 0000000..808d894
--- /dev/null
+++ b/logo.svg
@@ -0,0 +1,18 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!-- Generator: Adobe Illustrator 15.0.0, SVG Export Plug-In . SVG Version: 6.00 Build 0)  -->
+<!DOCTYPE svg PUBLIC "-//W3C//DTD SVG 1.1//EN" "http://www.w3.org/Graphics/SVG/1.1/DTD/svg11.dtd">
+<svg version="1.1" id="Ebene_1" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink" x="0px" y="0px"
+	  width="156px" height="156px" viewBox="0 0 156 156" enable-background="new 0 0 156 156" xml:space="preserve">
+<g id="Ebene_5">
+	<rect y="-0.006" fill="#D4372F" width="156" height="156.006"/>
+</g>
+<g>
+	<path fill="#FFFFFF" d="M78.832,65.861c-42.577,0-65.75-22.59-66,6c1.163,30.728,21.47,28.14,29,26
+		c7.157-2.033,31.357-9.361,31.357-9.361c2.418-0.967,5.561-1.209,8.611-0.125c8.367,2.971,20.537,8.066,29.863,10.176
+		c15.066,3.117,29.117-2.301,30.17-26.695C143.091,42.707,121.409,65.861,78.832,65.861z"/>
+	<path fill="#D4372F" d="M55.448,81.583c-10.5,4.498-20.952,3.875-21.113,3.758c-7.063-5.137-6.995-13.083-6.995-13.083
+		c0.164,0,32.771,4.275,35.103,4.923C62.892,77.306,59.981,79.642,55.448,81.583z"/>
+	<path fill="#D4372F" d="M120.249,85.21c0,0-9.066,1.166-21.762-4.275c-1.471-0.631-6.9-3.883-6.08-4.051
+		c0.104-0.021,34.709-4.541,34.727-4.755C127.134,72.128,128.374,78.192,120.249,85.21z"/>
+</g>
+</svg>
diff --git a/manifest.json b/manifest.json
new file mode 100644
index 0000000..b6897da
--- /dev/null
+++ b/manifest.json
@@ -0,0 +1,35 @@
+{
+  "manifest_version": 2,
+  "name": "Mask Detector",
+  "short_name": "mask-detector",
+  "version": "0.0.1",
+  "author": "Lukas Winkler",
+  "description": "find sites using the mask Typo3 extension",
+  "icons": {
+    "128": "logo.128.png"
+  },
+  "browser_action": {
+    "default_icon": {
+      "128": "logo.128.png"
+    },
+    "default_popup": "popup.html"
+  },
+  "content_scripts": [
+    {
+      "matches": ["<all_urls>"],
+      "js": ["contentscript.js"]
+    }
+  ],
+
+  "permissions": [
+    "storage",
+    "http://*/",
+    "https://*/",
+    "tabs"
+  ],
+  "background": {
+    "scripts": [
+      "background.js"
+    ]
+  }
+}
\ No newline at end of file
diff --git a/popup.html b/popup.html
new file mode 100644
index 0000000..566549b
--- /dev/null
+++ b/popup.html
@@ -0,0 +1,10 @@
+<!DOCTYPE html>
+<html lang="en">
+<head>
+    <meta charset="UTF-8">
+    <title>Title</title>
+</head>
+<body>
+
+</body>
+</html>
\ No newline at end of file