/* 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/. */
import { AppConstants } from "resource://gre/modules/AppConstants.sys.mjs";
import { XPCOMUtils } from "resource://gre/modules/XPCOMUtils.sys.mjs";
const lazy = {};
ChromeUtils.defineESModuleGetters(lazy, {
NimbusFeatures: "resource://nimbus/ExperimentAPI.sys.mjs",
ASRouter: "resource:///modules/asrouter/ASRouter.sys.mjs",
ScheduledTask: "resource://gre/modules/ScheduledTask.sys.mjs",
Subprocess: "resource://gre/modules/Subprocess.sys.mjs",
WindowsSetDefaultRedirect:
"moz-src:///browser/components/shell/WindowsSetDefaultRedirect.sys.mjs",
WindowsVersionInfo:
"resource://gre/modules/components-utils/WindowsVersionInfo.sys.mjs",
});
XPCOMUtils.defineLazyServiceGetter(
lazy,
"XreDirProvider",
"@mozilla.org/xre/directory-provider;
1",
Ci.nsIXREDirProvider
);
XPCOMUtils.defineLazyServiceGetter(
lazy,
"BackgroundTasks",
"@mozilla.org/backgroundtasks;
1",
Ci.nsIBackgroundTasks
);
XPCOMUtils.defineLazyServiceGetter(
lazy,
"imgTools",
"@mozilla.org/image/tools;
1",
Ci.imgITools
);
XPCOMUtils.defineLazyServiceGetter(
lazy,
"iniParserFactory",
"@mozilla.org/xpcom/ini-parser-factory;
1",
Ci.nsIINIParserFactory
);
XPCOMUtils.defineLazyServiceGetter(
lazy,
"secondaryTileService",
"@mozilla.org/browser/secondary-tile-service;
1",
Ci.nsISecondaryTileService
);
XPCOMUtils.defineLazyServiceGetter(
lazy,
"gioService",
"@mozilla.org/gio-service;
1",
Ci.nsIGIOService
);
ChromeUtils.defineLazyGetter(lazy, "log", () => {
let { ConsoleAPI } = ChromeUtils.importESModule(
"resource://gre/modules/Console.sys.mjs"
);
let consoleOptions = {
// tip: set maxLogLevel to "debug" and use log.debug() to create detailed
// messages during development. See LOG_LEVELS in Console.sys.mjs for details.
maxLogLevel: "error",
maxLogLevelPref: "browser.shell.loglevel",
prefix: "ShellService",
};
return new ConsoleAPI(consoleOptions);
});
const MSIX_PREVIOUSLY_PINNED_PREF =
"browser.startMenu.msixPinnedWhenLastChecked";
// URLs handed to launchSetDefaultAppPicker (as the openWithArg) when setting a
// protocol default, keyed by scheme. setAsDefaultProtocolHandler passes one of
// these to the OS picker; on the round-trip WindowsSetDefaultAppCmdHandler
// matches it via the stashed redirect.
export const DEFAULT_PROTOCOL_URLS = {
http: "
http://www.firefox.com/?utm_medium=platform&utm_source=windows&utm_campaign=owl",
https:
"
https://www.firefox.com/?utm_medium=platform&utm_source=windows&utm_campaign=owl",
mailto: "mailto:owl@firefox.com",
};
/**
* Internal functionality to save and restore the docShell.allow* properties.
*/
let ShellServiceInternal = {
/**
* Used to determine whether or not to offer "Set as desktop background"
* functionality. Even if shell service is available it is not
* guaranteed that it is able to set the background for every desktop
* which is especially true for Linux with its many different desktop
* environments.
*/
get canSetDesktopBackground() {
if (AppConstants.platform == "win" || AppConstants.platform == "macosx") {
return true;
}
if (AppConstants.platform == "linux") {
if (this.shellService) {
let linuxShellService = this.shellService.QueryInterface(
Ci.nsIGNOMEShellService
);
return linuxShellService.canSetDesktopBackground;
}
}
return false;
},
/**
* Used to determine based on the creation date of the home folder how old a
* user profile is (and NOT the browser profile).
*/
async getOSUserProfileAgeInDays() {
let currentDate = new Date();
let homeFolderCreationDate = new Date(
(await IOUtils.stat(Services.dirsvc.get("Home", Ci.nsIFile).path))
.creationTime
);
// Round and return the age (=difference between today and creation) to a
// resolution of days.
return Math.round(
(currentDate - homeFolderCreationDate) /
1000 / // ms
60 / // sec
60 / // min
24 // hours
);
},
/**
* Used to determine whether or not to show a "Set Default Browser"
* query dialog. This attribute is true if the application is starting
* up and "browser.shell.checkDefaultBrowser" is true, otherwise it
* is false.
*/
_checkedThisSession: false,
get shouldCheckDefaultBrowser() {
// If we've already checked, the browser has been started and this is a
// new window open, and we don't want to check again.
if (this._checkedThisSession) {
return false;
}
if (!Services.prefs.getBoolPref("browser.shell.checkDefaultBrowser")) {
return false;
}
return true;
},
set shouldCheckDefaultBrowser(shouldCheck) {
Services.prefs.setBoolPref(
"browser.shell.checkDefaultBrowser",
!!shouldCheck
);
},
isDefaultBrowser(startupCheck, forAllTypes) {
// If this is the first browser window, maintain internal state that we've
// checked this session (so that subsequent window opens don't show the
// default browser dialog).
if (startupCheck) {
this._checkedThisSession = true;
}
if (this.shellService) {
return this.shellService.isDefaultBrowser(forAllTypes);
}
return false;
},
/**
* Check if UserChoice is impossible.
*
* Separated for easy stubbing in tests.
*
* @returns {string}
* Telemetry result like "Err*", or null if UserChoice is possible.
*/
_userChoiceImpossibleTelemetryResult() {
let winShellService = this.shellService.QueryInterface(
Ci.nsIWindowsShellService
);
if (!winShellService.checkAllProgIDsExist()) {
return "ErrProgID";
}
if (!winShellService.checkBrowserUserChoiceHashes()) {
return "ErrHash";
}
return null;
},
/**
* Accommodate `setDefaultPDFHandlerOnlyReplaceBrowsers` feature.
*
* @returns {boolean}
* True if Firefox should set itself as default PDF handler, false otherwise.
*/
_shouldSetDefaultPDFHandler() {
if (
!lazy.NimbusFeatures.shellService.getVariable(
"setDefaultPDFHandlerOnlyReplaceBrowsers"
)
) {
return true;
}
const handler = this.getDefaultPDFHandler();
if (handler === null) {
// We only get an exception when something went really wrong. Fail
// safely: don't set Firefox as default PDF handler.
lazy.log.warn(
"Could not determine default PDF handler: not setting Firefox as " +
"default PDF handler!"
);
return false;
}
if (!handler.registered) {
lazy.log.debug(
"Current default PDF handler has no registered association; " +
"should set as default PDF handler."
);
return true;
}
if (handler.knownBrowser) {
lazy.log.debug(
"Current default PDF handler progID matches known browser; should " +
"set as default PDF handler."
);
return true;
}
lazy.log.debug(
"Current default PDF handler progID does not match known browser " +
"prefix; should not set as default PDF handler."
);
return false;
},
getDefaultPDFHandler() {
const knownBrowserPrefixes = [
"AppXq0fevzme2pys62n3e0fbqa7peapykr8v", // Edge before Blink, per
https://stackoverflow.com/a/32724723.
"AppXd4nrz8ff68srnhf9t5a8sbjyar1cr723", // Another pre-Blink Edge identifier. See Bug
1858729.
"Brave", // For "BraveFile".
"Chrome", // For "ChromeHTML".
"Firefox", // For "FirefoxHTML-*" or "FirefoxPDF-*". Need to take from other installations o
f Firefox!
"IE", // Best guess.
"MSEdge", // For "MSEdgePDF". Edgium.
"Opera", // For "OperaStable", presumably varying with channel.
"Yandex", // For "YandexPDF.IHKFKZEIOKEMR6BGF62QXCRIKM", presumably varying with installation.
];
let currentProgID = "";
try {
// Returns the empty string when no association is registered, in
// which case the prefix matching will fail and we'll set Firefox as
// the default PDF handler.
currentProgID = this.queryCurrentDefaultHandlerFor(".pdf");
} catch (e) {
// We only get an exception when something went really wrong. Fail
// safely: don't set Firefox as default PDF handler.
lazy.log.warn("Failed to queryCurrentDefaultHandlerFor:");
return null;
}
if (currentProgID == "") {
return { registered: false, knownBrowser: false };
}
const knownBrowserPrefix = knownBrowserPrefixes.find(it =>
currentProgID.startsWith(it)
);
if (knownBrowserPrefix) {
lazy.log.debug(`Found known browser prefix: ${knownBrowserPrefix}`);
}
return {
registered: true,
knownBrowser: !!knownBrowserPrefix,
};
},
/**
* Set the default browser through the UserChoice registry keys on Windows.
*
* NOTE: This does NOT open the System Settings app for manual selection
* in case of failure. If that is desired, catch the exception and call
* setDefaultBrowser().
*
* @returns {Promise<void>}
* Resolves when successful, rejects with Error on failure.
*/
async setAsDefaultUserChoice() {
if (AppConstants.platform != "win") {
throw new Error("Windows-only");
}
lazy.log.info("Setting Firefox as default using UserChoice");
let telemetryResult = "ErrOther";
try {
telemetryResult =
this._userChoiceImpossibleTelemetryResult() ?? "ErrOther";
if (telemetryResult == "ErrProgID") {
throw new Error("checkAllProgIDsExist() failed");
}
if (telemetryResult == "ErrHash") {
throw new Error("checkBrowserUserChoiceHashes() failed");
}
const aumi = lazy.XreDirProvider.getInstallHash();
telemetryResult = "ErrLaunchExe";
const extraFileExtensions = [];
if (
lazy.NimbusFeatures.shellService.getVariable("setDefaultPDFHandler")
) {
if (this._shouldSetDefaultPDFHandler()) {
lazy.log.info("Setting Firefox as default PDF handler");
extraFileExtensions.push(".pdf", "FirefoxPDF");
} else {
lazy.log.info("Not setting Firefox as default PDF handler");
}
}
try {
await this.defaultAgent.setDefaultBrowserUserChoiceAsync(
aumi,
extraFileExtensions
);
} catch (err) {
telemetryResult = "ErrOther";
this._throwForWDBAResult(err.result || Cr.NS_ERROR_FAILURE);
}
telemetryResult = "Success";
} catch (ex) {
if (ex instanceof WDBAError) {
telemetryResult = ex.telemetryResult;
}
throw ex;
} finally {
Glean.browser.setDefaultUserChoiceResult[telemetryResult].add(1);
}
},
async setAsDefaultPDFHandlerUserChoice() {
if (AppConstants.platform != "win") {
throw new Error("Windows-only");
}
const aumi = lazy.XreDirProvider.getInstallHash();
try {
this.defaultAgent.setDefaultExtensionHandlersUserChoice(aumi, [
".pdf",
"FirefoxPDF",
]);
} catch (err) {
this._throwForWDBAResult(err.result || Cr.NS_ERROR_FAILURE);
}
},
async _maybeShowSetDefaultGuidanceNotification() {
if (
lazy.NimbusFeatures.shellService.getVariable(
"setDefaultGuidanceNotifications"
) &&
// Disable showing toast notification from Firefox Background Tasks.
!lazy.BackgroundTasks?.isBackgroundTaskMode
) {
await lazy.ASRouter.waitForInitialized;
const win = Services.wm.getMostRecentBrowserWindow() ?? null;
lazy.ASRouter.sendTriggerMessage({
browser: win,
id: "deeplinkedToWindowsSettingsUI",
});
}
},
// override nsIShellService.setDefaultBrowser() on the ShellService proxy.
async setDefaultBrowser(forAllUsers) {
// On Windows, our best chance is to set UserChoice, so try that first.
if (
AppConstants.platform == "win" &&
Services.prefs.getBoolPref("browser.shell.setDefaultBrowserUserChoice")
) {
try {
await this.setAsDefaultUserChoice();
return;
} catch (err) {
lazy.log.warn(
"Error thrown during setAsDefaultUserChoice. Full exception:",
err
);
// intentionally fall through to setting via the non-user choice pathway on error
}
}
this.shellService.setDefaultBrowser(forAllUsers);
this._maybeShowSetDefaultGuidanceNotification();
},
async setAsDefault() {
let setAsDefaultError = false;
try {
await ShellService.setDefaultBrowser(false);
} catch (ex) {
setAsDefaultError = true;
console.error(ex);
}
// Here isUserDefault and setUserDefaultError appear
// to be inverse of each other, but that is only because this function is
// called when the browser is set as the default. During startup we record
// the isUserDefault value without recording setUserDefaultError.
Glean.browser.isUserDefault[!setAsDefaultError ? "true" : "false"].add();
Glean.browser.setDefaultError[setAsDefaultError ? "true" : "false"].add();
},
_isWindows11() {
return (
lazy.WindowsVersionInfo.get({ throwOnError: false }).buildNumber >= 22000
);
},
/**
* Returns the on-disk nsIFile for a PDF bundled under the browser directory
* in NS_GRE_DIR.
*
* @param {string} aLeafName - The bundled PDF's file name, e.g.
* "confused_fox.pdf".
* @returns {nsIFile} The bundled file (which may not exist on disk).
*/
getBundledPdfFile(aLeafName) {
const file = Services.dirsvc.get("GreD", Ci.nsIFile);
file.append("browser");
file.append(aLeafName);
return file;
},
/**
* Set Firefox as the Windows default PDF handler.
*
* @param {boolean} [onlyIfKnownBrowser] - When true, only proceed if the
* current default PDF handler is a known browser.
* @param {boolean} [openInFirefox] - Only meaningful on the "Open with"
* picker code path. After the user picks Firefox, the OS relaunches Firefox
* with the bundled stub PDF; this flag decides whether we then open a PDF in
* a new tab (true), to land the user in Firefox, or silently absorb that
* relaunch (false).
*/
async setAsDefaultPDFHandler(
onlyIfKnownBrowser = false,
openInFirefox = false
) {
if (AppConstants.platform != "win") {
throw new Error("Windows-only");
}
if (onlyIfKnownBrowser && !this.getDefaultPDFHandler().knownBrowser) {
return;
}
// Tracks the last method attempted and whether its API call succeeded.
// These feed into the consolidated set_default_pdf_handler_attempt event
// recorded at the bottom of this function.
let method = "user_choice";
let success = false;
try {
await this.setAsDefaultPDFHandlerUserChoice();
Glean.browser.setDefaultPdfHandlerUserChoiceResult.Success.add(1);
success = true;
} catch (e) {
const telemetryResult =
e instanceof WDBAError ? e.telemetryResult : "ErrOther";
Glean.browser.setDefaultPdfHandlerUserChoiceResult[telemetryResult].add(
1
);
lazy.log.debug(
"Setting default by user-choice failed, falling through to open with launcher",
e
);
}
// Optional second attempt via the undocumented IOpenWithLauncher API,
// which surfaces the OS "Open with" picker so the user can pick Firefox
// themselves. Gated by a pref so it can be remotely disabled if it
// regresses.
if (
!success &&
Services.prefs.getBoolPref(
"browser.shell.setDefaultPDFHandler.useOpenWith",
false
)
) {
method = "open_with";
const openWithArg = this.getBundledPdfFile("confused_fox.pdf").path;
// Arm the round-trip: the OS hands `openWithArg` back to Firefox if the user
// selects us. We redirect that launch to the bundled PDF); otherwise overrideUri
// is null and the launch is suppressed.
const overrideUri = openInFirefox
? Services.io.newFileURI(this.getBundledPdfFile("blank.pdf")).spec
: null;
lazy.WindowsSetDefaultRedirect.arm(
openWithArg,
overrideUri,
lazy.WindowsSetDefaultRedirect.TYPE.FILE
);
try {
const flags = this._isWindows11()
? Ci.nsIWindowsShellService.OPEN_WITH_SET_HANDLER
: Ci.nsIWindowsShellService.OPEN_WITH_SET_HANDLER_WIN10;
this.shellService.launchSetDefaultAppPicker(openWithArg, flags);
success = true;
} catch (e) {
lazy.WindowsSetDefaultRedirect.clear();
// The picker API itself failed (e.g. COM error). Fall through to the
// modern settings dialog rather than leaving the user without any
// default-handler UI.
lazy.log.debug(
"Setting default by open with launcher failed, possibly falling through to modern settings",
e
);
}
}
// PDF default app settings are only available in Windows 11 (build 22000+).
if (!success && this._isWindows11()) {
method = "settings";
try {
this.shellService.launchModernSettingsDialogDefaultApps();
Glean.browser.setDefaultPdfHandlerModernSettingsResult.Success.add(1);
success = true;
} catch (e) {
Glean.browser.setDefaultPdfHandlerModernSettingsResult.Failure.add(1);
lazy.log.debug(
"Last attempt to set as default PDF failed through modern settings",
e
);
}
}
// Record the consolidated attempt event after a delay. For open_with and
// settings the user is interacting with a launched dialog out-of-process,
// so we wait before sampling isDefaultHandlerFor to give that interaction
// time to complete. For user_choice the wait is unnecessary but harmless.
const waitTimeMs = Services.prefs.getIntPref(
"browser.shell.setDefaultPDFHandler.attemptWaitTimeMs",
30000
);
new lazy.ScheduledTask(() => {
Glean.browser.setDefaultPdfHandlerAttempt.record({
method,
success,
result_is_default: this.isDefaultHandlerFor(".pdf"),
});
}, Date.now() + waitTimeMs).arm();
},
/**
* Set Firefox as the Windows default handler for a protocol (scheme).
*
* @param {string} protocol - The scheme to claim, e.g. "https" or "mailto".
* Selects the default URL and is the telemetry / isDefaultHandlerFor key.
* @param {string} [url] - The URL handed to the OS picker (the openWithArg).
* Defaults to the DEFAULT_PROTOCOL_URLS entry for protocol.
* @param {boolean} [openInFirefox] - After the user picks Firefox, the OS
* relaunches Firefox with that URL; this flag decides whether we then open
* the protocol's default URL in a new tab (true) or suppress that relaunch
* (false).
*/
async setAsDefaultProtocolHandler(
protocol,
url = DEFAULT_PROTOCOL_URLS[protocol],
openInFirefox = false
) {
if (AppConstants.platform != "win") {
throw new Error("Windows-only");
}
if (!url) {
throw new Error(
`No URL provided and no DEFAULT_PROTOCOL_URLS fallback for protocol: ${protocol}`
);
}
// Arm the round-trip for once the user picks a default: the OS hands `url`
// back when Firefox becomes the handler. When opening in Firefox we then
// open the protocol's default URL; otherwise the relaunch is suppressed.
lazy.WindowsSetDefaultRedirect.arm(
url,
openInFirefox ? DEFAULT_PROTOCOL_URLS[protocol] : null,
lazy.WindowsSetDefaultRedirect.TYPE.PROTOCOL
);
// Tracks the last method attempted and whether its API call succeeded.
// These feed into the consolidated set_default_protocol_handler_attempt
// event recorded at the bottom of this function.
let method = "open_with";
let success = false;
const flags =
(this._isWindows11()
? Ci.nsIWindowsShellService.OPEN_WITH_SET_HANDLER
: Ci.nsIWindowsShellService.OPEN_WITH_SET_HANDLER_WIN10) |
Ci.nsIWindowsShellService.OPEN_WITH_PROTOCOL_MESSAGING;
try {
this.shellService.launchSetDefaultAppPicker(url, flags);
success = true;
} catch (e) {
lazy.WindowsSetDefaultRedirect.clear();
lazy.log.debug(
"Setting default protocol handler by open with launcher failed, " +
"falling through to modern settings",
e
);
}
if (!success) {
method = "settings";
try {
this.shellService.launchModernSettingsDialogDefaultApps();
Glean.browser.setDefaultProtocolHandlerModernSettingsResult.Success.add(
1
);
success = true;
} catch (e) {
Glean.browser.setDefaultProtocolHandlerModernSettingsResult.Failure.add(
1
);
lazy.log.debug(
"Last attempt to set as default protocol handler failed through " +
"modern settings",
e
);
}
}
// Record the consolidated attempt event after a delay so the user has
// time to interact with the launched picker or settings dialog before we
// sample isDefaultHandlerFor.
const waitTimeMs = Services.prefs.getIntPref(
"browser.shell.setDefaultProtocolHandler.attemptWaitTimeMs",
30000
);
new lazy.ScheduledTask(() => {
Glean.browser.setDefaultProtocolHandlerAttempt.record({
method,
success,
protocol,
result_is_default: this.isDefaultHandlerFor(protocol),
});
}, Date.now() + waitTimeMs).arm();
},
/**
* Determine if we're the default handler for the given file extension (like
* ".pdf") or protocol (like "https"). Windows-only for now.
*
* @returns {boolean} true if we are the default handler, false otherwise.
*/
isDefaultHandlerFor(aFileExtensionOrProtocol) {
if (AppConstants.platform == "win") {
return this.shellService.isDefaultHandlerFor(aFileExtensionOrProtocol);
}
return false;
},
/**
* Checks if Firefox app can and isn't pinned to OS "taskbar."
*
* @throws if not called from main process.
*/
async doesAppNeedPin(privateBrowsing = false) {
if (
Services.appinfo.processType !== Services.appinfo.PROCESS_TYPE_DEFAULT
) {
throw new Components.Exception(
"Can't determine pinned from child process",
Cr.NS_ERROR_NOT_AVAILABLE
);
}
// Pretend pinning is not needed/supported if remotely disabled.
if (lazy.NimbusFeatures.shellService.getVariable("disablePin")) {
return false;
}
// Bug 1758770: Pinning private browsing on MSIX is currently
// not possible.
if (
privateBrowsing &&
AppConstants.platform === "win" &&
Services.sysinfo.getProperty("hasWinPackageId")
) {
return false;
}
// Currently this only works on certain Windows versions.
try {
// First check if we can even pin the app where an exception means no.
await this.shellService
.QueryInterface(Ci.nsIWindowsShellService)
.checkPinCurrentAppToTaskbarAsync(privateBrowsing);
let winTaskbar = Cc["@mozilla.org/windows-taskbar;1"].getService(
Ci.nsIWinTaskbar
);
// Then check if we're already pinned.
return !(await this.shellService.isCurrentAppPinnedToTaskbarAsync(
privateBrowsing
? winTaskbar.defaultPrivateGroupId
: winTaskbar.defaultGroupId
));
} catch (ex) {}
// Next check mac pinning to dock.
try {
// Accessing this.macDockSupport will ensure we're actually running
// on Mac (it's possible to be on Linux in this block).
const isInDock = this.macDockSupport.isAppInDock;
// We can't pin Private Browsing mode on Mac, only a shortcut to the vanilla app
return privateBrowsing ? false : !isInDock;
} catch (ex) {}
return false;
},
/**
* Pin Firefox app to the OS "taskbar."
*/
async pinToTaskbar(privateBrowsing = false, fireAndForget = false) {
if (await this.doesAppNeedPin(privateBrowsing)) {
try {
if (AppConstants.platform == "win") {
await this.shellService.pinCurrentAppToTaskbarAsync(
privateBrowsing,
fireAndForget
);
} else if (AppConstants.platform == "macosx") {
this.macDockSupport.ensureAppIsPinnedToDock();
}
} catch (ex) {
console.error(ex);
}
}
},
/**
* On MSIX builds, pins Firefox to the Windows Start Menu
*
* On non-MSIX builds, this function is a no-op and always returns false.
*
* @returns {boolean} true if we successfully pin and false otherwise.
*/
async pinToStartMenu() {
if (await this.doesAppNeedStartMenuPin()) {
try {
let pinSuccess =
await this.shellService.pinCurrentAppToStartMenuAsync(false);
Services.prefs.setBoolPref(MSIX_PREVIOUSLY_PINNED_PREF, pinSuccess);
return pinSuccess;
} catch (err) {
lazy.log.warn("Error thrown during pinCurrentAppToStartMenuAsync", err);
Services.prefs.setBoolPref(MSIX_PREVIOUSLY_PINNED_PREF, false);
}
}
return false;
},
/**
* On MSIX builds, checks if Firefox app can be and is not
* pinned to the Windows Start Menu.
*
* On non-MSIX builds, this function is a no-op and always returns false.
*
* @returns {boolean} true if this is an MSIX install and we are not yet
* pinned to the Start Menu.
*
* @throws if not called from main process.
*/
async doesAppNeedStartMenuPin() {
if (
Services.appinfo.processType !== Services.appinfo.PROCESS_TYPE_DEFAULT
) {
throw new Components.Exception(
"Can't determine pinned from child process",
Cr.NS_ERROR_NOT_AVAILABLE
);
}
if (
Services.prefs.getBoolPref("browser.shell.disableStartMenuPin", false)
) {
return false;
}
try {
return (
AppConstants.platform === "win" &&
Services.sysinfo.getProperty("hasWinPackageId") &&
!(await this.shellService.isCurrentAppPinnedToStartMenuAsync())
);
} catch (ex) {}
return false;
},
/**
* On MSIX builds, checks if Firefox is no longer pinned to
* the Windows Start Menu when it previously was and records
* a Glean event if so.
*
* On non-MSIX builds, this function is a no-op.
*/
async recordWasPreviouslyPinnedToStartMenu() {
if (!Services.sysinfo.getProperty("hasWinPackageId")) {
return;
}
let isPinned = await this.shellService.isCurrentAppPinnedToStartMenuAsync();
if (
!isPinned &&
Services.prefs.getBoolPref(MSIX_PREVIOUSLY_PINNED_PREF, false)
) {
Services.prefs.setBoolPref(MSIX_PREVIOUSLY_PINNED_PREF, isPinned);
Glean.startMenu.manuallyUnpinnedSinceLastLaunch.record();
}
},
_throwForWDBAResult(exitCode) {
if (exitCode != Cr.NS_OK) {
const telemetryResult =
new Map([
[Cr.NS_ERROR_WDBA_NO_PROGID, "ErrExeProgID"],
[Cr.NS_ERROR_WDBA_HASH_CHECK, "ErrExeHash"],
[Cr.NS_ERROR_WDBA_REJECTED, "ErrExeRejected"],
[Cr.NS_ERROR_WDBA_BUILD, "ErrBuild"],
]).get(exitCode) ?? "ErrExeOther";
throw new WDBAError(exitCode, telemetryResult);
}
throw new Error(
`_throwForWDBAResult called with unexpected exit code: ${exitCode}`
);
},
get shortcutIconType() {
if (AppConstants.platform === "win") {
return { extension: "ico", mimeType: "image/vnd.microsoft.icon" };
}
if (AppConstants.platform === "linux") {
return { extension: "png", mimeType: "image/png" };
}
throw new Error("Shortcut icons are not supported on this platform");
},
/**
* This function can be used to convert compatible image formats into icons
* compatible with the createShortcut function.
*
* @param {nsIFile} file - The file to write to.
* @param {imgIContainer} imgContainer - The container holding the image.
*/
async writeShortcutIcon(file, imgContainer) {
let stream = lazy.imgTools.encodeScaledImage(
imgContainer,
ShellService.shortcutIconType.mimeType,
256,
256
);
let streamSize = stream.available();
let bis = Cc["@mozilla.org/binaryinputstream;1"].createInstance(
Ci.nsIBinaryInputStream
);
bis.setInputStream(stream);
let newByteArray = new Uint8Array(streamSize);
bis.readArrayBuffer(streamSize, newByteArray.buffer);
await IOUtils.write(file.path, newByteArray);
},
/**
* Creates a new Linux desktop entry for the current user.
*
* A Linux desktop entry is an INI-like file that complies with the
* freedesktop.org Desktop Entry Specification [0]. It's similar to a Windows
* shortcut, and it can appear on the desktop or application menus on
* supported environments.
*
* [0]: https://specifications.freedesktop.org/desktop-entry/latest/
*
* @param {string} appId - The application ID that this desktop entry will be
* used for. This should match the app_id or WM_CLASS that will be associated
* with the window.
* @param {string} title - The default user-visible name of the desktop
* entry. (Localization is currently not supported.)
* @param {string[]} argv - Arguments that should be passed to the Firefox
* executable.
* @param {string} iconPath - Path to the icon that should be associated with
* the desktop entry.
*/
async createLinuxDesktopEntry(
appId,
title,
argv,
iconPath,
{ window = null } = {}
) {
if (AppConstants.platform !== "linux") {
throw new Error(
"createLinuxDesktopEntry is only supported on Linux-like systems"
);
}
let ini = lazy.iniParserFactory.createINIParser();
ini.QueryInterface(Ci.nsIINIParserWriter);
// https://specifications.freedesktop.org/desktop-entry/latest/file-naming
let isValidSegment = segment =>
!!segment.match(/^[A-Za-z-_][A-Za-z0-9-_]*$/);
let segments = appId.split(".");
if (!segments || segments.map(isValidSegment).includes(false)) {
throw new Error(`Desktop entry ID '${appId}' is invalid`);
}
ini.setString("Desktop Entry", "Type", "Application");
ini.setString("Desktop Entry", "Version", "1.5");
ini.setString("Desktop Entry", "Name", title);
ini.setString("Desktop Entry", "Icon", iconPath);
// All desktop files made with this must run the Firefox executable.
argv.unshift(await ShellService._findStartupCommand());
// https://specifications.freedesktop.org/desktop-entry/latest/exec-variables
// (\x60 = backtick, \x24 = dollar sign, \x22 = double quote, and
// \x5c = backslash; escaped to avoid messing with syntax highlighting)
const escapeArg = arg => arg.replaceAll(/[\x60\x24\x22\x5c]/g, "\\$&");
ini.setString(
"Desktop Entry",
"Exec",
argv.map(arg => `"${escapeArg(arg)}"`).join(" ")
);
if (
lazy.gioService.isRunningUnderFlatpak ||
lazy.gioService.isRunningUnderSnap
) {
await ShellService.requestInstallDynamicLauncher(appId, ini, window);
} else {
await IOUtils.writeUTF8(
ShellService._getLinuxDesktopEntryPath(appId),
ini.writeToString()
);
}
},
/**
* Tries to find a command that will reliably start this installation,
* using the information in argv[0] if possible.
*
* For example, on NixOS the installation directory changes each update, so
* we should use '/run/current-system/sw/bin/firefox', and that itself points
* to a script which configures LD_LIBRARY_PATH so all of the dependencies
* can be found. See bug 2021897. If we referred to the executable directly,
* it'd point to a stale version and might be missing libraries
*
* Note that this won't handle cases where the script redirects over, like:
* #!/bin/sh
* exec ./firefox-bin "$@"
* since there's no good way to tell that this runs the current installation.
*
* To find the best command, we look at how the browser was run initially. If
* argv[0] is provided, the return value will either be
* - argv[0] itself;
* - the absolute path of argv[0]; or
* - the absolute path of a symlink _to_ argv[0] (e.g. 'firefox' or
* 'firefox-esr').
*
* If argv[0] is not provided, the return value will be
* - the absolute path of the executable; or
* - the absolute path of a symlink _to_ the executable (e.g. 'firefox' or
* 'firefox-nightly').
*
* This can't be perfect, but the goal is to get the best command possible.
*
* @returns {string} A path that, when run, should reliably start the
* browser.
*/
async _findStartupCommand() {
let executableFile = Services.dirsvc.get("XREExeF", Ci.nsIFile);
let wanted = Cc["@mozilla.org/file/local;1"].createInstance(Ci.nsIFile);
let argv0 = ShellService.getArgv0();
try {
wanted.initWithPath(argv0);
} catch (e) {
if (argv0.includes("/")) {
wanted.setRelativePath(
Services.dirsvc.get("CurWorkD", Ci.nsIFile),
argv0
);
} else {
if (argv0 !== "") {
// argv[0] doesn't seem to be a path to anything, so assume it's just
// a command itself. If it seems to be present in the PATH, roll with
// it, otherwise fall back to the executable.
try {
await lazy.Subprocess.pathSearch(argv0);
return argv0; // if it doesn't throw
} catch (inner) {}
}
// If that didn't work, or it's empty, just refer to the executable
// directly.
wanted.initWithFile(executableFile);
}
}
let candidates = [
wanted.leafName,
// e.g. 'firefox-nightly'
AppConstants.MOZ_APP_NAME + "-" + AppConstants.MOZ_UPDATE_CHANNEL,
// e.g. 'firefox'
AppConstants.MOZ_APP_NAME,
];
let lookupPromises = candidates.map(cmd => lazy.Subprocess.pathSearch(cmd));
let results = await Promise.allSettled(lookupPromises);
let file = Cc["@mozilla.org/file/local;1"].createInstance(Ci.nsIFile);
for (const { value } of results.filter(got => got.status === "fulfilled")) {
// See if it's a symlink to this installation.
file.initWithPath(value);
try {
// TODO: I think this is main thread I/O, but it looks like there's
// no good way around it...?
file.initWithPath(file.target);
} catch (e) {
// If that fails, look at the file itself (e.g. if the installation
// directory is in $PATH).
}
if (file.equals(wanted)) {
return PathUtils.filename(value);
}
}
return wanted.path;
},
/**
* Removes the Linux desktop entry given its app ID.
*
* This only removes entries within XDG_DATA_HOME as it is now, i.e. system
* shortcuts will not be removed.
*
* @param {string} appId - The appId given to createLinuxDesktopEntry.
*/
async deleteLinuxDesktopEntry(appId) {
if (AppConstants.platform !== "linux") {
throw new Error(
"deleteLinuxDesktopEntry is only supported on Linux-like systems"
);
}
if (
lazy.gioService.isRunningUnderFlatpak ||
lazy.gioService.isRunningUnderSnap
) {
await ShellService.requestUninstallDynamicLauncher(appId);
} else {
await IOUtils.remove(ShellService._getLinuxDesktopEntryPath(appId));
}
},
/**
* Determines the location of a Linux desktop entry given its app ID.
*
* @param {string} appId - The basename of the desktop file's name.
* @returns {string} The path to the desktop entry.
*/
_getLinuxDesktopEntryPath(appId) {
if (
lazy.gioService.isRunningUnderFlatpak ||
lazy.gioService.isRunningUnderSnap
) {
throw new Error(
"Use DynamicLauncher instead of _getLinuxDesktopEntryPath when sandboxed"
);
}
// TODO is there any way to reuse existing logic for this?
// Find the location of ~/.local/share/applications.
let dataHome = Services.env.get("XDG_DATA_HOME");
if (!dataHome || !PathUtils.isAbsolute(dataHome)) {
let home = Services.dirsvc.get("Home", Ci.nsIFile);
dataHome = PathUtils.join(home.path, ".local", "share");
}
return PathUtils.join(dataHome, "applications", `${appId}.desktop`);
},
async requestCreateAndPinSecondaryTile(tileId, name, iconPath, args) {
let resolver = Promise.withResolvers();
lazy.secondaryTileService.requestCreateAndPin(
tileId,
name,
iconPath,
args,
this._secondaryTileListener("Secondary tile pinning failed", resolver)
);
return resolver.promise;
},
async requestDeleteSecondaryTile(tileId) {
let resolver = Promise.withResolvers();
lazy.secondaryTileService.requestDelete(
tileId,
this._secondaryTileListener("Secondary tile unpinning failed", resolver)
);
return resolver.promise;
},
_secondaryTileListener(errorMessage, resolver) {
return {
QueryInterface: ChromeUtils.generateQI([Ci.nsISecondaryTileListener]),
succeeded(outcome) {
resolver.resolve(outcome);
},
failed(hresult) {
let formatted = hresult.toString(16).padStart(8, "0");
let error = new Error(`${errorMessage} (HRESULT ${formatted})`);
resolver.reject(error);
},
};
},
};
// Functions may be present or absent dependent on whether the `nsIShellService`
// has been queried for the interface implementing it, as querying the interface
// adds it's functions to the queried JS object. Coincidental querying is more
// likely to occur for Firefox Desktop than a Firefox Background Task. To force
// consistent behavior, we query the native shell interface inheriting from
// `nsIShellService` on setup.
let shellInterface;
switch (AppConstants.platform) {
case "win":
shellInterface = Ci.nsIWindowsShellService;
break;
case "macosx":
shellInterface = Ci.nsIMacShellService;
break;
case "linux":
shellInterface = Ci.nsIGNOMEShellService;
break;
default:
lazy.log.warn(
`No platform native shell service interface for ${AppConstants.platform} queried, add for new platforms.`
);
shellInterface = Ci.nsIShellService;
}
XPCOMUtils.defineLazyServiceGetters(ShellServiceInternal, {
defaultAgent: ["@mozilla.org/default-agent;1", Ci.nsIDefaultAgent],
shellService: ["@mozilla.org/browser/shell-service;1", shellInterface],
macDockSupport: [
"@mozilla.org/widget/macdocksupport;1",
Ci.nsIMacDockSupport,
],
});
/**
* The external API exported by this module.
*/
export var ShellService = new Proxy(ShellServiceInternal, {
get(target, name) {
if (name in target) {
return target[name];
}
// n.b. If a native shell interface member is not present on `shellService`,
// it may be necessary to query the native interface.
if (target.shellService && name in target.shellService) {
return target.shellService[name];
}
lazy.log.warn(
`${name.toString()} not found in ShellService: ${target.shellService}`
);
return undefined;
},
});
class WDBAError extends Error {
constructor(exitCode, telemetryResult) {
super(`WDBA nonzero exit code ${exitCode}: ${telemetryResult}`);
this.exitCode = exitCode;
this.telemetryResult = telemetryResult;
}
}