1 files changed, 54 insertions, 0 deletions
diff --git a/browser/extensions/webcompat/shims/history.js b/browser/extensions/webcompat/shims/history.js
new file mode 100644
index 0000000000..6fbd1fdedb
--- /dev/null
+++ b/browser/extensions/webcompat/shims/history.js
@@ -0,0 +1,54 @@
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+"use strict";
+
+/*
+ * Bug 1624853 - Shim Storage Access API on history.com
+ *
+ * history.com uses Adobe as a necessary third party to authenticating
+ * with a TV provider. In order to accomodate this, we grant storage access
+ * to the Adobe domain via the Storage Access API when the login or logout
+ * buttons are clicked, then forward the click to continue as normal.
+ */
+
+console.warn(
+  `When using oauth, Firefox calls the Storage Access API on behalf of the site. See https://bugzilla.mozilla.org/show_bug.cgi?id=1624853 for details.`
+);
+
+// Third-party origin we need to request storage access for.
+const STORAGE_ACCESS_ORIGIN = "https://sp.auth.adobe.com";
+
+document.documentElement.addEventListener(
+  "click",
+  e => {
+    const { target, isTrusted } = e;
+    if (!isTrusted) {
+      return;
+    }
+
+    const button = target.closest("a");
+    if (!button) {
+      return;
+    }
+
+    const buttonLink = button.href;
+    if (buttonLink?.startsWith("https://www.history.com/mvpd-auth")) {
+      button.disabled = true;
+      button.style.opacity = 0.5;
+      e.stopPropagation();
+      e.preventDefault();
+      document
+        .requestStorageAccessForOrigin(STORAGE_ACCESS_ORIGIN)
+        .then(() => {
+          target.click();
+        })
+        .catch(() => {
+          button.disabled = false;
+          button.style.opacity = 1.0;
+        });
+    }
+  },
+  true
+);