Add post on Mastodon CDN

Signed-off-by: David Young <davidy@funkypenguin.co.nz>

.cache/plugin/optimize/images.json

@@ -150,5 +150,6 @@
   "images/blog/multiple-renovate-prs-detail.png": "da36aab8f9c343ffba0b5ddea3982a23da3594c1",
   "images/blog/haproxy_backends.png": "eded975e1c08c346bad7d4b8177c267a121a503f",
   "images/blog/haproxy_health_checks.png": "db00b7adafb53286e7083242638155298327c0b3",
-  "images/blog/haproxy_stats-1.png": "3a36d2429c752b8d4612655473820c5bb2146d3f"
+  "images/blog/haproxy_stats-1.png": "3a36d2429c752b8d4612655473820c5bb2146d3f",
+  "images/blog/mastodon_cloudflare_transform_rules.png": "b2552805791734279de05452f4b0f39088a67146"
 }

.cache/plugin/privacy/assets/external/so.fnky.nz/embed.js

@@ -0,0 +1,65 @@
+// @ts-check
+
+(function() {
+  'use strict';
+
+  /**
+   * @param {() => void} loaded
+   */
+  var ready = function(loaded) {
+    if (['interactive', 'complete'].indexOf(document.readyState) !== -1) {
+      loaded();
+    } else {
+      document.addEventListener('DOMContentLoaded', loaded);
+    }
+  };
+
+  ready(function() {
+    /** @type {Map<number, HTMLIFrameElement>} */
+    var iframes = new Map();
+
+    window.addEventListener('message', function(e) {
+      var data = e.data || {};
+
+      if (typeof data !== 'object' || data.type !== 'setHeight' || !iframes.has(data.id)) {
+        return;
+      }
+
+      var iframe = iframes.get(data.id);
+
+      if ('source' in e && iframe.contentWindow !== e.source) {
+        return;
+      }
+
+      iframe.height = data.height;
+    });
+
+    [].forEach.call(document.querySelectorAll('iframe.mastodon-embed'), function(iframe) {
+      // select unique id for each iframe
+      var id = 0, failCount = 0, idBuffer = new Uint32Array(1);
+      while (id === 0 || iframes.has(id)) {
+        id = crypto.getRandomValues(idBuffer)[0];
+        failCount++;
+        if (failCount > 100) {
+          // give up and assign (easily guessable) unique number if getRandomValues is broken or no luck
+          id = -(iframes.size + 1);
+          break;
+        }
+      }
+
+      iframes.set(id, iframe);
+
+      iframe.scrolling      = 'no';
+      iframe.style.overflow = 'hidden';
+
+      iframe.onload = function() {
+        iframe.contentWindow.postMessage({
+          type: 'setHeight',
+          id: id,
+        }, '*');
+      };
+
+      iframe.onload();
+    });
+  });
+})();