From 0be548e4e991aca217165c0f6e6429d44120c75e Mon Sep 17 00:00:00 2001
From: Christian Pauly <christian-pauly@posteo.de>
Date: Sun, 12 Jan 2020 11:30:05 +0100
Subject: [PATCH] [Client] Implement request openID

---
 lib/famedlysdk.dart                    |  1 +
 lib/src/client.dart                    | 10 ++++++++++
 lib/src/utils/open_id_credentials.dart | 19 +++++++++++++++++++
 test/client_test.dart                  |  9 +++++++++
 test/fake_matrix_api.dart              |  7 +++++++
 5 files changed, 46 insertions(+)
 create mode 100644 lib/src/utils/open_id_credentials.dart

diff --git a/lib/famedlysdk.dart b/lib/famedlysdk.dart
index 0447fb9..55117b8 100644
--- a/lib/famedlysdk.dart
+++ b/lib/famedlysdk.dart
@@ -29,6 +29,7 @@ export 'package:famedlysdk/src/sync/user_update.dart';
 export 'package:famedlysdk/src/utils/matrix_exception.dart';
 export 'package:famedlysdk/src/utils/matrix_file.dart';
 export 'package:famedlysdk/src/utils/mx_content.dart';
+export 'package:famedlysdk/src/utils/open_id_credentials.dart';
 export 'package:famedlysdk/src/utils/profile.dart';
 export 'package:famedlysdk/src/utils/push_rules.dart';
 export 'package:famedlysdk/src/utils/receipt.dart';
diff --git a/lib/src/client.dart b/lib/src/client.dart
index f5fc9bd..cbb8f4b 100644
--- a/lib/src/client.dart
+++ b/lib/src/client.dart
@@ -30,6 +30,7 @@ import 'package:famedlysdk/src/presence.dart';
 import 'package:famedlysdk/src/store_api.dart';
 import 'package:famedlysdk/src/sync/user_update.dart';
 import 'package:famedlysdk/src/utils/matrix_file.dart';
+import 'package:famedlysdk/src/utils/open_id_credentials.dart';
 import 'package:famedlysdk/src/utils/turn_server_credentials.dart';
 import 'package:pedantic/pedantic.dart';
 import 'room.dart';
@@ -1050,4 +1051,13 @@ class Client {
     rooms?.sort(sortRoomsBy);
     _sortLock = false;
   }
+
+  /// Gets an OpenID token object that the requester may supply to another service to verify their identity in Matrix.
+  /// The generated token is only valid for exchanging for user information from the federation API for OpenID.
+  Future<OpenIdCredentials> requestOpenIdCredentials() async {
+    final Map<String, dynamic> response = await jsonRequest(
+        type: HTTPType.GET,
+        action: "/client/r0/user/$userID/openid/request_token");
+    return OpenIdCredentials.fromJson(response);
+  }
 }
diff --git a/lib/src/utils/open_id_credentials.dart b/lib/src/utils/open_id_credentials.dart
new file mode 100644
index 0000000..8abaea6
--- /dev/null
+++ b/lib/src/utils/open_id_credentials.dart
@@ -0,0 +1,19 @@
+class OpenIdCredentials {
+  String accessToken;
+  String tokenType;
+  String matrixServerName;
+  int expiresIn;
+
+  OpenIdCredentials(
+      {this.accessToken,
+      this.tokenType,
+      this.matrixServerName,
+      this.expiresIn});
+
+  OpenIdCredentials.fromJson(Map<String, dynamic> json) {
+    accessToken = json['access_token'];
+    tokenType = json['token_type'];
+    matrixServerName = json['matrix_server_name'];
+    expiresIn = json['expires_in'];
+  }
+}
diff --git a/test/client_test.dart b/test/client_test.dart
index e8dcd97..562f32a 100644
--- a/test/client_test.dart
+++ b/test/client_test.dart
@@ -23,6 +23,7 @@
 
 import 'dart:async';
 
+import 'package:famedlysdk/famedlysdk.dart';
 import 'package:famedlysdk/src/account_data.dart';
 import 'package:famedlysdk/src/client.dart';
 import 'package:famedlysdk/src/presence.dart';
@@ -315,6 +316,14 @@ void main() {
       expect(loginResp, true);
     });
 
+    test('createRoom', () async {
+      final OpenIdCredentials openId = await matrix.requestOpenIdCredentials();
+      expect(openId.accessToken, "SomeT0kenHere");
+      expect(openId.tokenType, "Bearer");
+      expect(openId.matrixServerName, "example.com");
+      expect(openId.expiresIn, 3600);
+    });
+
     test('createRoom', () async {
       final List<User> users = [
         User("@alice:fakeServer.notExisting"),
diff --git a/test/fake_matrix_api.dart b/test/fake_matrix_api.dart
index e0ef058..e081dcc 100644
--- a/test/fake_matrix_api.dart
+++ b/test/fake_matrix_api.dart
@@ -522,6 +522,13 @@ class FakeMatrixApi extends MockClient {
 
   static final Map<String, Map<String, dynamic>> api = {
     "GET": {
+      "/client/r0/user/@test:fakeServer.notExisting/openid/request_token":
+          (var req) => {
+                "access_token": "SomeT0kenHere",
+                "token_type": "Bearer",
+                "matrix_server_name": "example.com",
+                "expires_in": 3600
+              },
       "/client/r0/rooms/1/state/m.room.member/@alice:example.com": (var req) =>
           {"displayname": "Alice"},
       "/client/r0/profile/@getme:example.com": (var req) => {