зеркало из https://github.com/mozilla/gecko-dev.git
272 строки
9.3 KiB
JavaScript
272 строки
9.3 KiB
JavaScript
/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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XPCOMUtils.defineLazyServiceGetter(this, "cps",
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"@mozilla.org/network/captive-portal-service;1",
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"nsICaptivePortalService");
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var CaptivePortalWatcher = {
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/**
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* This constant is chosen to be large enough for a portal recheck to complete,
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* and small enough that the delay in opening a tab isn't too noticeable.
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* Please see comments for _delayedCaptivePortalDetected for more details.
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*/
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PORTAL_RECHECK_DELAY_MS: Services.prefs.getIntPref("captivedetect.portalRecheckDelayMS", 500),
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// This is the value used to identify the captive portal notification.
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PORTAL_NOTIFICATION_VALUE: "captive-portal-detected",
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// This holds a weak reference to the captive portal tab so that we
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// don't leak it if the user closes it.
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_captivePortalTab: null,
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/**
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* If a portal is detected when we don't have focus, we first wait for focus
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* and then add the tab if, after a recheck, the portal is still active. This
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* is set to true while we wait so that in the unlikely event that we receive
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* another notification while waiting, we don't do things twice.
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*/
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_delayedCaptivePortalDetectedInProgress: false,
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// In the situation above, this is set to true while we wait for the recheck.
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// This flag exists so that tests can appropriately simulate a recheck.
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_waitingForRecheck: false,
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get _captivePortalNotification() {
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let nb = document.getElementById("high-priority-global-notificationbox");
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return nb.getNotificationWithValue(this.PORTAL_NOTIFICATION_VALUE);
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},
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get canonicalURL() {
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return Services.prefs.getCharPref("captivedetect.canonicalURL");
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},
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get _browserBundle() {
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delete this._browserBundle;
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return this._browserBundle =
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Services.strings.createBundle("chrome://browser/locale/browser.properties");
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},
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init() {
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Services.obs.addObserver(this, "captive-portal-login");
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Services.obs.addObserver(this, "captive-portal-login-abort");
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Services.obs.addObserver(this, "captive-portal-login-success");
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if (cps.state == cps.LOCKED_PORTAL) {
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// A captive portal has already been detected.
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this._captivePortalDetected();
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// Automatically open a captive portal tab if there's no other browser window.
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let windows = Services.wm.getEnumerator("navigator:browser");
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if (windows.getNext() == window && !windows.hasMoreElements()) {
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this.ensureCaptivePortalTab();
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}
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} else if (cps.state == cps.UNKNOWN) {
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// We trigger a portal check after delayed startup to avoid doing a network
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// request before first paint.
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this._delayedRecheckPending = true;
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Services.obs.addObserver(this, "browser-delayed-startup-finished");
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}
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XPCOMUtils.defineLazyPreferenceGetter(this, "PORTAL_RECHECK_DELAY_MS",
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"captivedetect.portalRecheckDelayMS", 500);
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},
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uninit() {
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Services.obs.removeObserver(this, "captive-portal-login");
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Services.obs.removeObserver(this, "captive-portal-login-abort");
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Services.obs.removeObserver(this, "captive-portal-login-success");
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if (this._delayedRecheckPending) {
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Services.obs.removeObserver(this, "browser-delayed-startup-finished");
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}
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if (this._delayedCaptivePortalDetectedInProgress) {
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Services.obs.removeObserver(this, "xul-window-visible");
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}
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},
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observe(aSubject, aTopic, aData) {
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switch (aTopic) {
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case "browser-delayed-startup-finished":
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Services.obs.removeObserver(this, "browser-delayed-startup-finished");
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delete this._delayedRecheckPending;
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cps.recheckCaptivePortal();
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break;
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case "captive-portal-login":
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this._captivePortalDetected();
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break;
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case "captive-portal-login-abort":
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case "captive-portal-login-success":
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this._captivePortalGone();
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break;
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case "xul-window-visible":
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this._delayedCaptivePortalDetected();
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break;
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}
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},
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_captivePortalDetected() {
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if (this._delayedCaptivePortalDetectedInProgress) {
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return;
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}
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let win = RecentWindow.getMostRecentBrowserWindow();
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// If no browser window has focus, open and show the tab when we regain focus.
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// This is so that if a different application was focused, when the user
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// (re-)focuses a browser window, we open the tab immediately in that window
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// so they can log in before continuing to browse.
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if (win != Services.ww.activeWindow) {
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this._delayedCaptivePortalDetectedInProgress = true;
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Services.obs.addObserver(this, "xul-window-visible");
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}
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this._showNotification();
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},
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/**
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* Called after we regain focus if we detect a portal while a browser window
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* doesn't have focus. Triggers a portal recheck to reaffirm state, and adds
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* the tab if needed after a short delay to allow the recheck to complete.
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*/
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_delayedCaptivePortalDetected() {
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if (!this._delayedCaptivePortalDetectedInProgress) {
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return;
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}
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let win = RecentWindow.getMostRecentBrowserWindow();
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if (win != Services.ww.activeWindow) {
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// The window that got focused was not a browser window.
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return;
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}
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Services.obs.removeObserver(this, "xul-window-visible");
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this._delayedCaptivePortalDetectedInProgress = false;
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if (win != window) {
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// Some other browser window got focus, we don't have to do anything.
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return;
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}
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// Trigger a portal recheck. The user may have logged into the portal via
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// another client, or changed networks.
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cps.recheckCaptivePortal();
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this._waitingForRecheck = true;
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let requestTime = Date.now();
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let self = this;
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Services.obs.addObserver(function observer() {
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let time = Date.now() - requestTime;
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Services.obs.removeObserver(observer, "captive-portal-check-complete");
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self._waitingForRecheck = false;
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if (cps.state != cps.LOCKED_PORTAL) {
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// We're free of the portal!
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return;
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}
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if (time <= self.PORTAL_RECHECK_DELAY_MS) {
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// The amount of time elapsed since we requested a recheck (i.e. since
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// the browser window was focused) was small enough that we can add and
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// focus a tab with the login page with no noticeable delay.
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self.ensureCaptivePortalTab();
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}
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}, "captive-portal-check-complete");
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},
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_captivePortalGone() {
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if (this._delayedCaptivePortalDetectedInProgress) {
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Services.obs.removeObserver(this, "xul-window-visible");
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this._delayedCaptivePortalDetectedInProgress = false;
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}
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this._removeNotification();
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},
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handleEvent(aEvent) {
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if (aEvent.type != "TabSelect" || !this._captivePortalTab || !this._captivePortalNotification) {
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return;
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}
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let tab = this._captivePortalTab.get();
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let n = this._captivePortalNotification;
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if (!tab || !n) {
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return;
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}
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let doc = tab.ownerDocument;
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let button = n.querySelector("button.notification-button");
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if (doc.defaultView.gBrowser.selectedTab == tab) {
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button.style.visibility = "hidden";
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} else {
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button.style.visibility = "visible";
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}
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},
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_showNotification() {
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let buttons = [
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{
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label: this._browserBundle.GetStringFromName("captivePortal.showLoginPage2"),
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callback: () => {
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this.ensureCaptivePortalTab();
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// Returning true prevents the notification from closing.
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return true;
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},
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isDefault: true,
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},
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];
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let message = this._browserBundle.GetStringFromName("captivePortal.infoMessage3");
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let closeHandler = (aEventName) => {
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if (aEventName != "removed") {
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return;
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}
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gBrowser.tabContainer.removeEventListener("TabSelect", this);
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};
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let nb = document.getElementById("high-priority-global-notificationbox");
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nb.appendNotification(message, this.PORTAL_NOTIFICATION_VALUE, "",
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nb.PRIORITY_INFO_MEDIUM, buttons, closeHandler);
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gBrowser.tabContainer.addEventListener("TabSelect", this);
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},
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_removeNotification() {
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let n = this._captivePortalNotification;
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if (!n || !n.parentNode) {
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return;
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}
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n.close();
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},
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ensureCaptivePortalTab() {
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let tab;
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if (this._captivePortalTab) {
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tab = this._captivePortalTab.get();
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}
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// If the tab is gone or going, we need to open a new one.
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if (!tab || tab.closing || !tab.parentNode) {
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tab = gBrowser.addTab(this.canonicalURL, { ownerTab: gBrowser.selectedTab });
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this._captivePortalTab = Cu.getWeakReference(tab);
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}
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gBrowser.selectedTab = tab;
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let canonicalURI = makeURI(this.canonicalURL);
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// When we are no longer captive, close the tab if it's at the canonical URL.
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let tabCloser = () => {
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Services.obs.removeObserver(tabCloser, "captive-portal-login-abort");
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Services.obs.removeObserver(tabCloser, "captive-portal-login-success");
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if (!tab || tab.closing || !tab.parentNode || !tab.linkedBrowser ||
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!tab.linkedBrowser.currentURI.equalsExceptRef(canonicalURI)) {
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return;
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}
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gBrowser.removeTab(tab);
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};
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Services.obs.addObserver(tabCloser, "captive-portal-login-abort");
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Services.obs.addObserver(tabCloser, "captive-portal-login-success");
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},
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};
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