| // Copyright (c) 2018, the Dart project authors. Please see the AUTHORS file |
| // for details. All rights reserved. Use of this source code is governed by a |
| // BSD-style license that can be found in the LICENSE file. |
| |
| import 'dart:convert'; |
| |
| import 'package:http_parser/http_parser.dart'; |
| |
| /// The type of a callback that parses parameters from an HTTP response. |
| typedef GetParameters = Map<String, dynamic> Function( |
| MediaType contentType, String body); |
| |
| /// Parses parameters from a response with a JSON body, as per the [OAuth2 |
| /// spec][]. |
| /// |
| /// [OAuth2 spec]: https://tools.ietf.org/html/rfc6749#section-5.1 |
| Map<String, dynamic> parseJsonParameters(MediaType contentType, String body) { |
| // The spec requires a content-type of application/json, but some endpoints |
| // (e.g. Dropbox) serve it as text/javascript instead. |
| if (contentType == null || |
| (contentType.mimeType != 'application/json' && |
| contentType.mimeType != 'text/javascript')) { |
| throw FormatException( |
| 'Content-Type was "$contentType", expected "application/json"'); |
| } |
| |
| var untypedParameters = jsonDecode(body); |
| if (untypedParameters is Map<String, dynamic>) { |
| return untypedParameters; |
| } |
| |
| throw FormatException('Parameters must be a map, was "$untypedParameters"'); |
| } |