fix(console): url safe base64 to array buffer (#6019)

fix: console base64 to array buffer

Co-authored-by: Livio Spring <livio.a@gmail.com>

console/src/app/pages/users/user-detail/u2f-util.ts

@@ -1,9 +1,31 @@
-export function _base64ToArrayBuffer(base64: string): any {
-  const binaryString = atob(base64);
-  const len = binaryString.length;
-  const bytes = new Uint8Array(len);
-  for (let i = 0; i < len; i++) {
-    bytes[i] = binaryString.charCodeAt(i);
-  }
-  return bytes.buffer;
+export function _base64ToArrayBuffer(thing: any) {
+  if (typeof thing === 'string') {
+    // base64url to base64
+    thing = thing.replace(/-/g, '+').replace(/_/g, '/');
+
+    // base64 to Uint8Array
+    var str = window.atob(thing);
+    var bytes = new Uint8Array(str.length);
+    for (var i = 0; i < str.length; i++) {
+      bytes[i] = str.charCodeAt(i);
+    }
+    thing = bytes;
+  }
+
+  // Array to Uint8Array
+  if (Array.isArray(thing)) {
+    thing = new Uint8Array(thing);
+  }
+
+  // Uint8Array to ArrayBuffer
+  if (thing instanceof Uint8Array) {
+    thing = thing.buffer;
+  }
+
+  // error if none of the above worked
+  if (!(thing instanceof ArrayBuffer)) {
+    throw new TypeError('could not coerce to ArrayBuffer');
+  }
+
+  return thing;
 }