summaryrefslogtreecommitdiffstats
path: root/comm/mail/components/extensions/parent/ext-chrome-settings-overrides.js
blob: 9f3d624b7658d7bf5944ea7f9f9d876445a37c0e (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
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
/* 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/. */

/* global searchInitialized */

// Copy of browser/components/extensions/parent/ext-chrome-settings-overrides.js
// minus HomePage.jsm (+ dependent ExtensionControlledPopup.sys.mjs and
// ExtensionPermissions.jsm usage).

"use strict";

var { ExtensionPreferencesManager } = ChromeUtils.importESModule(
  "resource://gre/modules/ExtensionPreferencesManager.sys.mjs"
);
var { ExtensionParent } = ChromeUtils.importESModule(
  "resource://gre/modules/ExtensionParent.sys.mjs"
);

ChromeUtils.defineESModuleGetters(this, {
  ExtensionSettingsStore:
    "resource://gre/modules/ExtensionSettingsStore.sys.mjs",
});
const DEFAULT_SEARCH_STORE_TYPE = "default_search";
const DEFAULT_SEARCH_SETTING_NAME = "defaultSearch";
const ENGINE_ADDED_SETTING_NAME = "engineAdded";

// When an extension starts up, a search engine may asynchronously be
// registered, without blocking the startup. When an extension is
// uninstalled, we need to wait for this registration to finish
// before running the uninstallation handler.
// Map[extension id -> Promise]
var pendingSearchSetupTasks = new Map();

this.chrome_settings_overrides = class extends ExtensionAPI {
  static async processDefaultSearchSetting(action, id) {
    await ExtensionSettingsStore.initialize();
    let item = ExtensionSettingsStore.getSetting(
      DEFAULT_SEARCH_STORE_TYPE,
      DEFAULT_SEARCH_SETTING_NAME,
      id
    );
    if (!item) {
      return;
    }
    let control = await ExtensionSettingsStore.getLevelOfControl(
      id,
      DEFAULT_SEARCH_STORE_TYPE,
      DEFAULT_SEARCH_SETTING_NAME
    );
    item = ExtensionSettingsStore[action](
      id,
      DEFAULT_SEARCH_STORE_TYPE,
      DEFAULT_SEARCH_SETTING_NAME
    );
    if (item && control == "controlled_by_this_extension") {
      try {
        let engine = Services.search.getEngineByName(
          item.value || item.initialValue
        );
        if (engine) {
          await Services.search.setDefault(
            engine,
            action == "enable"
              ? Ci.nsISearchService.CHANGE_REASON_ADDON_INSTALL
              : Ci.nsISearchService.CHANGE_REASON_ADDON_UNINSTALL
          );
        }
      } catch (e) {
        console.error(e);
      }
    }
  }

  static async removeEngine(id) {
    try {
      await Services.search.removeWebExtensionEngine(id);
    } catch (e) {
      console.error(e);
    }
  }

  static removeSearchSettings(id) {
    return Promise.all([
      this.processDefaultSearchSetting("removeSetting", id),
      this.removeEngine(id),
    ]);
  }

  static async onUninstall(id) {
    let searchStartupPromise = pendingSearchSetupTasks.get(id);
    if (searchStartupPromise) {
      await searchStartupPromise.catch(console.error);
    }
    // Note: We do not have to deal with homepage here as it is managed by
    // the ExtensionPreferencesManager.
    return Promise.all([this.removeSearchSettings(id)]);
  }

  static async onUpdate(id, manifest) {
    let search_provider = manifest?.chrome_settings_overrides?.search_provider;

    if (!search_provider) {
      // Remove setting and engine from search if necessary.
      this.removeSearchSettings(id);
    } else if (!search_provider.is_default) {
      // Remove the setting, but keep the engine in search.
      chrome_settings_overrides.processDefaultSearchSetting(
        "removeSetting",
        id
      );
    }
  }

  static async onDisable(id) {
    await chrome_settings_overrides.processDefaultSearchSetting("disable", id);
    await chrome_settings_overrides.removeEngine(id);
  }

  async onManifestEntry(entryName) {
    let { extension } = this;
    let { manifest } = extension;
    if (manifest.chrome_settings_overrides.search_provider) {
      // Registering a search engine can potentially take a long while,
      // or not complete at all (when searchInitialized is never resolved),
      // so we are deliberately not awaiting the returned promise here.
      let searchStartupPromise =
        this.processSearchProviderManifestEntry().finally(() => {
          if (
            pendingSearchSetupTasks.get(extension.id) === searchStartupPromise
          ) {
            pendingSearchSetupTasks.delete(extension.id);
            // This is primarily for tests so that we know when an extension
            // has finished initialising.
            ExtensionParent.apiManager.emit("searchEngineProcessed", extension);
          }
        });

      // Save the promise so we can await at onUninstall.
      pendingSearchSetupTasks.set(extension.id, searchStartupPromise);
    }
  }

  async ensureSetting(engineName, disable = false) {
    let { extension } = this;
    // Ensure the addon always has a setting
    await ExtensionSettingsStore.initialize();
    let item = ExtensionSettingsStore.getSetting(
      DEFAULT_SEARCH_STORE_TYPE,
      DEFAULT_SEARCH_SETTING_NAME,
      extension.id
    );
    if (!item) {
      let defaultEngine = await Services.search.getDefault();
      item = await ExtensionSettingsStore.addSetting(
        extension.id,
        DEFAULT_SEARCH_STORE_TYPE,
        DEFAULT_SEARCH_SETTING_NAME,
        engineName,
        () => defaultEngine.name
      );
      // If there was no setting, we're fixing old behavior in this api.
      // A lack of a setting would mean it was disabled before, disable it now.
      disable =
        disable ||
        ["ADDON_UPGRADE", "ADDON_DOWNGRADE", "ADDON_ENABLE"].includes(
          extension.startupReason
        );
    }

    // Ensure the item is disabled (either if exists and is not default or if it does not
    // exist yet).
    if (disable) {
      item = await ExtensionSettingsStore.disable(
        extension.id,
        DEFAULT_SEARCH_STORE_TYPE,
        DEFAULT_SEARCH_SETTING_NAME
      );
    }
    return item;
  }

  async promptDefaultSearch(engineName) {
    let { extension } = this;
    // Don't ask if it is already the current engine
    let engine = Services.search.getEngineByName(engineName);
    let defaultEngine = await Services.search.getDefault();
    if (defaultEngine.name == engine.name) {
      return;
    }
    // Ensures the setting exists and is disabled.  If the
    // user somehow bypasses the prompt, we do not want this
    // setting enabled for this extension.
    await this.ensureSetting(engineName, true);

    let subject = {
      wrappedJSObject: {
        // This is a hack because we don't have the browser of
        // the actual install. This means the popup might show
        // in a different window. Will be addressed in a followup bug.
        // As well, we still notify if no topWindow exists to support
        // testing from xpcshell.
        browser: windowTracker.topWindow?.gBrowser.selectedBrowser,
        id: extension.id,
        name: extension.name,
        icon: extension.iconURL,
        currentEngine: defaultEngine.name,
        newEngine: engineName,
        async respond(allow) {
          if (allow) {
            await chrome_settings_overrides.processDefaultSearchSetting(
              "enable",
              extension.id
            );
            await Services.search.setDefault(
              Services.search.getEngineByName(engineName),
              Ci.nsISearchService.CHANGE_REASON_ADDON_INSTALL
            );
          }
          // For testing
          Services.obs.notifyObservers(
            null,
            "webextension-defaultsearch-prompt-response"
          );
        },
      },
    };
    Services.obs.notifyObservers(subject, "webextension-defaultsearch-prompt");
  }

  async processSearchProviderManifestEntry() {
    let { extension } = this;
    let { manifest } = extension;
    let searchProvider = manifest.chrome_settings_overrides.search_provider;

    // If we're not being requested to be set as default, then all we need
    // to do is to add the engine to the service. The search service can cope
    // with receiving added engines before it is initialised, so we don't have
    // to wait for it.  Search Service will also prevent overriding a builtin
    // engine appropriately.
    if (!searchProvider.is_default) {
      await this.addSearchEngine();
      return;
    }

    await searchInitialized;
    if (!this.extension) {
      console.error(
        `Extension shut down before search provider was registered`
      );
      return;
    }

    let engineName = searchProvider.name.trim();
    let result = await Services.search.maybeSetAndOverrideDefault(extension);
    // This will only be set to true when the specified engine is an app-provided
    // engine, or when it is an allowed add-on defined in the list stored in
    // SearchDefaultOverrideAllowlistHandler.
    if (result.canChangeToAppProvided) {
      await this.setDefault(engineName, true);
    }
    if (!result.canInstallEngine) {
      // This extension is overriding an app-provided one, so we don't
      // add its engine as well.
      return;
    }
    await this.addSearchEngine();
    if (extension.startupReason === "ADDON_INSTALL") {
      await this.promptDefaultSearch(engineName);
    } else {
      // Needs to be called every time to handle reenabling.
      await this.setDefault(engineName);
    }
  }

  async setDefault(engineName, skipEnablePrompt = false) {
    let { extension } = this;
    if (extension.startupReason === "ADDON_INSTALL") {
      // We should only get here if an extension is setting an app-provided
      // engine to default and we are ignoring the addons other engine settings.
      // In this case we do not show the prompt to the user.
      let item = await this.ensureSetting(engineName);
      await Services.search.setDefault(
        Services.search.getEngineByName(item.value),
        Ci.nsISearchService.CHANGE_REASON_ADDON_INSTALL
      );
    } else if (
      ["ADDON_UPGRADE", "ADDON_DOWNGRADE", "ADDON_ENABLE"].includes(
        extension.startupReason
      )
    ) {
      // We would be called for every extension being enabled, we should verify
      // that it has control and only then set it as default
      let control = await ExtensionSettingsStore.getLevelOfControl(
        extension.id,
        DEFAULT_SEARCH_STORE_TYPE,
        DEFAULT_SEARCH_SETTING_NAME
      );

      // Check for an inconsistency between the value returned by getLevelOfcontrol
      // and the current engine actually set.
      if (
        control === "controlled_by_this_extension" &&
        Services.search.defaultEngine.name !== engineName
      ) {
        // Check for and fix any inconsistency between the extensions settings storage
        // and the current engine actually set.  If settings claims the extension is default
        // but the search service claims otherwise, select what the search service claims
        // (See Bug 1767550).
        const allSettings = ExtensionSettingsStore.getAllSettings(
          DEFAULT_SEARCH_STORE_TYPE,
          DEFAULT_SEARCH_SETTING_NAME
        );
        for (const setting of allSettings) {
          if (setting.value !== Services.search.defaultEngine.name) {
            await ExtensionSettingsStore.disable(
              setting.id,
              DEFAULT_SEARCH_STORE_TYPE,
              DEFAULT_SEARCH_SETTING_NAME
            );
          }
        }
        control = await ExtensionSettingsStore.getLevelOfControl(
          extension.id,
          DEFAULT_SEARCH_STORE_TYPE,
          DEFAULT_SEARCH_SETTING_NAME
        );
      }

      if (control === "controlled_by_this_extension") {
        await Services.search.setDefault(
          Services.search.getEngineByName(engineName),
          Ci.nsISearchService.CHANGE_REASON_ADDON_INSTALL
        );
      } else if (control === "controllable_by_this_extension") {
        if (skipEnablePrompt) {
          // For overriding app-provided engines, we don't prompt, so set
          // the default straight away.
          await chrome_settings_overrides.processDefaultSearchSetting(
            "enable",
            extension.id
          );
          await Services.search.setDefault(
            Services.search.getEngineByName(engineName),
            Ci.nsISearchService.CHANGE_REASON_ADDON_INSTALL
          );
        } else if (extension.startupReason == "ADDON_ENABLE") {
          // This extension has precedence, but is not in control.  Ask the user.
          await this.promptDefaultSearch(engineName);
        }
      }
    }
  }

  async addSearchEngine() {
    let { extension } = this;
    try {
      await Services.search.addEnginesFromExtension(extension);
    } catch (e) {
      console.error(e);
      return false;
    }
    return true;
  }
};