Bug 1782083 - Create skeleton IdentityCredential, r=dveditz,emilio

This patch creates a do-nothing IdentityCredential that gives errors when it is used.

The IdentityCredential webidl is defined here:
  https://fedidcg.github.io/FedCM/#browser-api-identity-credential-interface

Accomplished here:
  - IdentityCredential class defined, including isupports and cycle-counting macros
  - Empty test added to hold the place of a mochitest folder
  - webidl of CredentialsContainer updated and IdentityCredential added
  - Logic to parse `identity` key from navigator.credentials.get()
  - Adding all of this to the build, including membership to the new bugzilla component DOM: Credential Management

Differential Revision: https://phabricator.services.mozilla.com/D153588

dom/credentialmanagement/identity/IdentityCredential.cpp

@@ -0,0 +1,33 @@
+/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* vim: set ts=8 sts=2 et sw=2 tw=80: */
+/* 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/. */
+
+#include "mozilla/dom/Promise.h"
+#include "mozilla/dom/IdentityCredential.h"
+#include "nsCycleCollectionParticipant.h"
+
+namespace mozilla::dom {
+
+NS_IMPL_ADDREF_INHERITED(IdentityCredential, Credential)
+NS_IMPL_RELEASE_INHERITED(IdentityCredential, Credential)
+
+NS_IMPL_CYCLE_COLLECTION_INHERITED(IdentityCredential, Credential)
+
+NS_INTERFACE_MAP_BEGIN_CYCLE_COLLECTION(IdentityCredential)
+NS_INTERFACE_MAP_END_INHERITING(Credential)
+
+JSObject* IdentityCredential::WrapObject(JSContext* aCx,
+                                         JS::Handle<JSObject*> aGivenProto) {
+  return IdentityCredential_Binding::Wrap(aCx, this, aGivenProto);
+}
+
+void IdentityCredential::GetToken(nsAString& aToken) const {
+  aToken.Assign(mToken);
+}
+void IdentityCredential::SetToken(const nsAString& aToken) {
+  mToken.Assign(aToken);
+}
+
+}  // namespace mozilla::dom

dom/credentialmanagement/identity/IdentityCredential.h

@@ -0,0 +1,43 @@
+/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* vim: set ts=8 sts=2 et sw=2 tw=80: */
+/* 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/. */
+
+#ifndef mozilla_dom_IdentityCredential_h
+#define mozilla_dom_IdentityCredential_h
+
+#include "js/TypeDecls.h"
+#include "mozilla/Attributes.h"
+#include "mozilla/dom/BindingDeclarations.h"
+#include "mozilla/dom/Credential.h"
+#include "nsCycleCollectionParticipant.h"
+#include "nsWrapperCache.h"
+
+namespace mozilla::dom {
+
+class IdentityCredential final : public Credential {
+ public:
+  NS_DECL_ISUPPORTS_INHERITED
+  NS_DECL_CYCLE_COLLECTION_SCRIPT_HOLDER_CLASS_INHERITED(IdentityCredential,
+                                                         Credential)
+
+  explicit IdentityCredential(nsPIDOMWindowInner* aParent);
+
+ protected:
+  ~IdentityCredential() override;
+
+ public:
+  virtual JSObject* WrapObject(JSContext* aCx,
+                               JS::Handle<JSObject*> aGivenProto) override;
+
+  void GetToken(nsAString& aToken) const;
+  void SetToken(const nsAString& aToken);
+
+ private:
+  nsAutoString mToken;
+};
+
+}  // namespace mozilla::dom
+
+#endif  // mozilla_dom_IdentityCredential_h

dom/credentialmanagement/identity/moz.build

@@ -0,0 +1,23 @@
+# -*- Mode: python; indent-tabs-mode: nil; tab-width: 40 -*-
+# vim: set filetype=python:
+# 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/.
+
+
+with Files("**"):
+    BUG_COMPONENT = ("Core", "DOM: Credential Management")
+
+EXPORTS.mozilla.dom += [
+    "IdentityCredential.h",
+]
+
+UNIFIED_SOURCES += [
+    "IdentityCredential.cpp",
+]
+
+include("/ipc/chromium/chromium-config.mozbuild")
+
+FINAL_LIBRARY = "xul"
+
+MOCHITEST_MANIFESTS += ["tests/mochitest/mochitest.ini"]

dom/credentialmanagement/identity/tests/mochitest/mochitest.ini

@@ -0,0 +1,2 @@
+[DEFAULT]
+[test_identity_noop.html]

dom/credentialmanagement/identity/tests/mochitest/test_identity_noop.html

@@ -0,0 +1,17 @@
+<!DOCTYPE HTML>
+<html>
+<head>
+  <meta charset="utf-8">
+  <title><!-- TODO: insert title here --></title>
+  <script src="/tests/SimpleTest/SimpleTest.js"></script>
+  <link rel="stylesheet" href="/tests/SimpleTest/test.css"/>
+  <script>
+    ok(true, "TODO: implement the test");
+  </script>
+</head>
+<body>
+<p id="display"></p>
+<div id="content" style="display: none"></div>
+<pre id="test"></pre>
+</body>
+</html>

dom/credentialmanagement/moz.build

@@ -7,6 +7,8 @@
 with Files("**"):
     BUG_COMPONENT = ("Core", "DOM: Web Authentication")
 
+DIRS += ["identity"]
+
 EXPORTS.mozilla.dom += [
     "Credential.h",
     "CredentialsContainer.h",

dom/webidl/CredentialManagement.webidl

@@ -34,6 +34,8 @@ dictionary CredentialRequestOptions {
   // https://w3c.github.io/webauthn/#sctn-credentialrequestoptions-extension
   [Pref="security.webauth.webauthn"]
   PublicKeyCredentialRequestOptions publicKey;
+  // This is taken from the partial definition in
+  // https://fedidcg.github.io/FedCM/#browser-api-credential-request-options
   [Pref="dom.security.credentialmanagement.identity.enabled"]
   IdentityCredentialRequestOptions identity;
   AbortSignal signal;

dom/webidl/IdentityCredential.webidl

@@ -0,0 +1,21 @@
+/* -*- Mode: IDL; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* 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/.
+ */
+
+[Exposed=Window, SecureContext,
+ Pref="dom.security.credentialmanagement.identity.enabled"]
+interface IdentityCredential : Credential {
+ readonly attribute USVString? token;
+};
+
+dictionary IdentityCredentialRequestOptions {
+ sequence<IdentityProvider> providers;
+};
+
+dictionary IdentityProvider {
+ required USVString configURL;
+ required USVString clientId;
+ USVString nonce;
+};

dom/webidl/moz.build

@@ -82,6 +82,9 @@ with Files("ConvolverNode.webidl"):
 with Files("GeolocationCoordinates.webidl"):
     BUG_COMPONENT = ("Core", "DOM: Geolocation")
 
+with Files("CredentialManagement.webidl"):
+    BUG_COMPONENT = ("Core", "DOM: Credential Management")
+
 with Files("Crypto.webidl"):
     BUG_COMPONENT = ("Core", "DOM: Security")
 
@@ -148,6 +151,9 @@ with Files("HashChangeEvent.webidl"):
 with Files("IDB*"):
     BUG_COMPONENT = ("Core", "Storage: IndexedDB")
 
+with Files("IdentityCredential.webidl"):
+    BUG_COMPONENT = ("Core", "DOM: Credential Management")
+
 with Files("IIRFilterNode.webidl"):
     BUG_COMPONENT = ("Core", "Web Audio")
 
@@ -667,6 +673,7 @@ WEBIDL_FILES = [
     "IDBRequest.webidl",
     "IDBTransaction.webidl",
     "IDBVersionChangeEvent.webidl",
+    "IdentityCredential.webidl",
     "IdleDeadline.webidl",
     "IIRFilterNode.webidl",
     "ImageBitmap.webidl",