1 files changed, 90 insertions, 0 deletions
diff --git a/remote/shared/Permissions.sys.mjs b/remote/shared/Permissions.sys.mjs
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+++ b/remote/shared/Permissions.sys.mjs
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+/* 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/. */
+
+const lazy = {};
+
+ChromeUtils.defineESModuleGetters(lazy, {
+  error: "chrome://remote/content/shared/webdriver/Errors.sys.mjs",
+});
+
+/** @namespace */
+export const permissions = {};
+
+/**
+ * Get a permission type for the "storage-access" permission.
+ *
+ * @param {nsIURI} uri
+ *     The URI to use for building the permission type.
+ *
+ * @returns {string} permissionType
+ *    The permission type for the "storage-access" permission.
+ */
+permissions.getStorageAccessPermissionsType = function (uri) {
+  const thirdPartyPrincipalSite = Services.eTLD.getSite(uri);
+  return "3rdPartyFrameStorage^" + thirdPartyPrincipalSite;
+};
+
+/**
+ * Set a permission given a permission descriptor, a permission state,
+ * an origin.
+ *
+ * @param {PermissionDescriptor} descriptor
+ *     The descriptor of the permission which will be updated.
+ * @param {string} state
+ *     State of the permission. It can be `granted`, `denied` or `prompt`.
+ * @param {string} origin
+ *     The origin which is used as a target for permission update.
+ *
+ * @throws {UnsupportedOperationError}
+ *     If <var>state</var> has unsupported value.
+ */
+permissions.set = function (descriptor, state, origin) {
+  const principal =
+    Services.scriptSecurityManager.createContentPrincipalFromOrigin(origin);
+
+  switch (state) {
+    case "granted": {
+      Services.perms.addFromPrincipal(
+        principal,
+        descriptor.type,
+        Services.perms.ALLOW_ACTION
+      );
+      return;
+    }
+    case "denied": {
+      Services.perms.addFromPrincipal(
+        principal,
+        descriptor.type,
+        Services.perms.DENY_ACTION
+      );
+      return;
+    }
+    case "prompt": {
+      Services.perms.removeFromPrincipal(principal, descriptor.type);
+      return;
+    }
+    default:
+      throw new lazy.error.UnsupportedOperationError(
+        "Unrecognized permission keyword for 'Set Permission' operation"
+      );
+  }
+};
+
+/**
+ * Validate the permission.
+ *
+ * @param {string} permissionName
+ *     The name of the permission which will be validated.
+ *
+ * @throws {UnsupportedOperationError}
+ *     If <var>permissionName</var> is not supported.
+ */
+permissions.validatePermission = function (permissionName) {
+  // Bug 1609427: PermissionDescriptor for "camera" and "microphone" are not yet implemented.
+  if (["camera", "microphone"].includes(permissionName)) {
+    throw new lazy.error.UnsupportedOperationError(
+      `"descriptor.name" "${permissionName}" is currently unsupported`
+    );
+  }
+};