summaryrefslogtreecommitdiff
path: root/services/fxaccounts/FxAccountsOAuthGrantClient.jsm
blob: 4319a07ab526cfba38e188d6c209a06486c4561a (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
/* 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/. */

/**
 * Firefox Accounts OAuth Grant Client allows clients to obtain
 * an OAuth token from a BrowserID assertion. Only certain client
 * IDs support this privilage.
 */

this.EXPORTED_SYMBOLS = ["FxAccountsOAuthGrantClient", "FxAccountsOAuthGrantClientError"];

const {classes: Cc, interfaces: Ci, utils: Cu, results: Cr} = Components;

Cu.import("resource://gre/modules/Promise.jsm");
Cu.import("resource://gre/modules/Log.jsm");
Cu.import("resource://gre/modules/FxAccountsCommon.js");
Cu.import("resource://services-common/rest.js");

Cu.importGlobalProperties(["URL"]);

const AUTH_ENDPOINT = "/authorization";
const DESTROY_ENDPOINT = "/destroy";

/**
 * Create a new FxAccountsOAuthClient for browser some service.
 *
 * @param {Object} options Options
 *   @param {Object} options.parameters
 *     @param {String} options.parameters.client_id
 *     OAuth id returned from client registration
 *     @param {String} options.parameters.serverURL
 *     The FxA OAuth server URL
 *   @param [authorizationEndpoint] {String}
 *   Optional authorization endpoint for the OAuth server
 * @constructor
 */
this.FxAccountsOAuthGrantClient = function(options) {

  this._validateOptions(options);
  this.parameters = options;

  try {
    this.serverURL = new URL(this.parameters.serverURL);
  } catch (e) {
    throw new Error("Invalid 'serverURL'");
  }

  log.debug("FxAccountsOAuthGrantClient Initialized");
};

this.FxAccountsOAuthGrantClient.prototype = {

  /**
   * Retrieves an OAuth access token for the signed in user
   *
   * @param {Object} assertion BrowserID assertion
   * @param {String} scope OAuth scope
   * @return Promise
   *        Resolves: {Object} Object with access_token property
   */
  getTokenFromAssertion: function (assertion, scope) {
    if (!assertion) {
      throw new Error("Missing 'assertion' parameter");
    }
    if (!scope) {
      throw new Error("Missing 'scope' parameter");
    }
    let params = {
      scope: scope,
      client_id: this.parameters.client_id,
      assertion: assertion,
      response_type: "token"
    };

    return this._createRequest(AUTH_ENDPOINT, "POST", params);
  },

  /**
   * Destroys a previously fetched OAuth access token.
   *
   * @param {String} token The previously fetched token
   * @return Promise
   *        Resolves: {Object} with the server response, which is typically
   *        ignored.
   */
  destroyToken: function (token) {
    if (!token) {
      throw new Error("Missing 'token' parameter");
    }
    let params = {
      token: token,
    };

    return this._createRequest(DESTROY_ENDPOINT, "POST", params);
  },

  /**
   * Validates the required FxA OAuth parameters
   *
   * @param options {Object}
   *        OAuth client options
   * @private
   */
  _validateOptions: function (options) {
    if (!options) {
      throw new Error("Missing configuration options");
    }

    ["serverURL", "client_id"].forEach(option => {
      if (!options[option]) {
        throw new Error("Missing '" + option + "' parameter");
      }
    });
  },

  /**
   * Interface for making remote requests.
   */
  _Request: RESTRequest,

  /**
   * Remote request helper
   *
   * @param {String} path
   *        Profile server path, i.e "/profile".
   * @param {String} [method]
   *        Type of request, i.e "GET".
   * @return Promise
   *         Resolves: {Object} Successful response from the Profile server.
   *         Rejects: {FxAccountsOAuthGrantClientError} Profile client error.
   * @private
   */
  _createRequest: function(path, method = "POST", params) {
    return new Promise((resolve, reject) => {
      let profileDataUrl = this.serverURL + path;
      let request = new this._Request(profileDataUrl);
      method = method.toUpperCase();

      request.setHeader("Accept", "application/json");
      request.setHeader("Content-Type", "application/json");

      request.onComplete = function (error) {
        if (error) {
          return reject(new FxAccountsOAuthGrantClientError({
            error: ERROR_NETWORK,
            errno: ERRNO_NETWORK,
            message: error.toString(),
          }));
        }

        let body = null;
        try {
          body = JSON.parse(request.response.body);
        } catch (e) {
          return reject(new FxAccountsOAuthGrantClientError({
            error: ERROR_PARSE,
            errno: ERRNO_PARSE,
            code: request.response.status,
            message: request.response.body,
          }));
        }

        // "response.success" means status code is 200
        if (request.response.success) {
          return resolve(body);
        }

        if (typeof body.errno === 'number') {
          // Offset oauth server errnos to avoid conflict with other FxA server errnos
          body.errno += OAUTH_SERVER_ERRNO_OFFSET;
        } else if (body.errno) {
          body.errno = ERRNO_UNKNOWN_ERROR;
        }
        return reject(new FxAccountsOAuthGrantClientError(body));
      };

      if (method === "POST") {
        request.post(params);
      } else {
        // method not supported
        return reject(new FxAccountsOAuthGrantClientError({
          error: ERROR_NETWORK,
          errno: ERRNO_NETWORK,
          code: ERROR_CODE_METHOD_NOT_ALLOWED,
          message: ERROR_MSG_METHOD_NOT_ALLOWED,
        }));
      }
    });
  },

};

/**
 * Normalized profile client errors
 * @param {Object} [details]
 *        Error details object
 *   @param {number} [details.code]
 *          Error code
 *   @param {number} [details.errno]
 *          Error number
 *   @param {String} [details.error]
 *          Error description
 *   @param {String|null} [details.message]
 *          Error message
 * @constructor
 */
this.FxAccountsOAuthGrantClientError = function(details) {
  details = details || {};

  this.name = "FxAccountsOAuthGrantClientError";
  this.code = details.code || null;
  this.errno = details.errno || ERRNO_UNKNOWN_ERROR;
  this.error = details.error || ERROR_UNKNOWN;
  this.message = details.message || null;
};

/**
 * Returns error object properties
 *
 * @returns {{name: *, code: *, errno: *, error: *, message: *}}
 * @private
 */
FxAccountsOAuthGrantClientError.prototype._toStringFields = function() {
  return {
    name: this.name,
    code: this.code,
    errno: this.errno,
    error: this.error,
    message: this.message,
  };
};

/**
 * String representation of a oauth grant client error
 *
 * @returns {String}
 */
FxAccountsOAuthGrantClientError.prototype.toString = function() {
  return this.name + "(" + JSON.stringify(this._toStringFields()) + ")";
};