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Diffstat (limited to '')
| -rw-r--r-- | browser/modules/ContentCrashHandlers.jsm | 1144 |
1 files changed, 1144 insertions, 0 deletions
diff --git a/browser/modules/ContentCrashHandlers.jsm b/browser/modules/ContentCrashHandlers.jsm new file mode 100644 index 0000000000..9abd3da006 --- /dev/null +++ b/browser/modules/ContentCrashHandlers.jsm @@ -0,0 +1,1144 @@ +/* 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/. */ + +"use strict"; + +var EXPORTED_SYMBOLS = ["TabCrashHandler", "UnsubmittedCrashHandler"]; + +const { XPCOMUtils } = ChromeUtils.importESModule( + "resource://gre/modules/XPCOMUtils.sys.mjs" +); +const { AppConstants } = ChromeUtils.importESModule( + "resource://gre/modules/AppConstants.sys.mjs" +); + +const lazy = {}; + +ChromeUtils.defineESModuleGetters(lazy, { + CrashSubmit: "resource://gre/modules/CrashSubmit.sys.mjs", + E10SUtils: "resource://gre/modules/E10SUtils.sys.mjs", + SessionStore: "resource:///modules/sessionstore/SessionStore.sys.mjs", + clearTimeout: "resource://gre/modules/Timer.sys.mjs", + setTimeout: "resource://gre/modules/Timer.sys.mjs", +}); + +XPCOMUtils.defineLazyModuleGetters(lazy, { + BrowserWindowTracker: "resource:///modules/BrowserWindowTracker.jsm", +}); + +// We don't process crash reports older than 28 days, so don't bother +// submitting them +const PENDING_CRASH_REPORT_DAYS = 28; +const DAY = 24 * 60 * 60 * 1000; // milliseconds +const DAYS_TO_SUPPRESS = 30; +const MAX_UNSEEN_CRASHED_CHILD_IDS = 20; +const MAX_UNSEEN_CRASHED_SUBFRAME_IDS = 10; + +// Time after which we will begin scanning for unsubmitted crash reports +const CHECK_FOR_UNSUBMITTED_CRASH_REPORTS_DELAY_MS = 60 * 10000; // 10 minutes + +// This is SIGUSR1 and indicates a user-invoked crash +const EXIT_CODE_CONTENT_CRASHED = 245; + +const TABCRASHED_ICON_URI = "chrome://browser/skin/tab-crashed.svg"; + +const SUBFRAMECRASH_LEARNMORE_URI = + "https://support.mozilla.org/kb/firefox-crashes-troubleshoot-prevent-and-get-help"; + +/** + * BrowserWeakMap is exactly like a WeakMap, but expects <xul:browser> + * objects only. + * + * Under the hood, BrowserWeakMap keys the map off of the <xul:browser> + * permanentKey. If, however, the browser has never gotten a permanentKey, + * it falls back to keying on the <xul:browser> element itself. + */ +class BrowserWeakMap extends WeakMap { + get(browser) { + if (browser.permanentKey) { + return super.get(browser.permanentKey); + } + return super.get(browser); + } + + set(browser, value) { + if (browser.permanentKey) { + return super.set(browser.permanentKey, value); + } + return super.set(browser, value); + } + + delete(browser) { + if (browser.permanentKey) { + return super.delete(browser.permanentKey); + } + return super.delete(browser); + } +} + +var TabCrashHandler = { + _crashedTabCount: 0, + childMap: new Map(), + browserMap: new BrowserWeakMap(), + notificationsMap: new Map(), + unseenCrashedChildIDs: [], + pendingSubFrameCrashes: new Map(), + pendingSubFrameCrashesIDs: [], + crashedBrowserQueues: new Map(), + restartRequiredBrowsers: new WeakSet(), + testBuildIDMismatch: false, + + get prefs() { + delete this.prefs; + return (this.prefs = Services.prefs.getBranch( + "browser.tabs.crashReporting." + )); + }, + + init() { + if (this.initialized) { + return; + } + this.initialized = true; + + Services.obs.addObserver(this, "ipc:content-shutdown"); + Services.obs.addObserver(this, "oop-frameloader-crashed"); + }, + + observe(aSubject, aTopic, aData) { + switch (aTopic) { + case "ipc:content-shutdown": { + aSubject.QueryInterface(Ci.nsIPropertyBag2); + + if (!aSubject.get("abnormal")) { + return; + } + + let childID = aSubject.get("childID"); + let dumpID = aSubject.get("dumpID"); + + // Get and remove the subframe crash info first. + let subframeCrashItem = this.getAndRemoveSubframeCrash(childID); + + if (!dumpID) { + Services.telemetry + .getHistogramById("FX_CONTENT_CRASH_DUMP_UNAVAILABLE") + .add(1); + } else if (AppConstants.MOZ_CRASHREPORTER) { + this.childMap.set(childID, dumpID); + + // If this is a subframe crash, show the crash notification. Only + // show subframe notifications when there is a minidump available. + if (subframeCrashItem) { + let browsers = + ChromeUtils.nondeterministicGetWeakMapKeys(subframeCrashItem) || + []; + for (let browserItem of browsers) { + let browser = subframeCrashItem.get(browserItem); + if (browser.isConnected && !browser.ownerGlobal.closed) { + this.showSubFrameNotification(browser, childID, dumpID); + } + } + } + } + + if (!this.flushCrashedBrowserQueue(childID)) { + this.unseenCrashedChildIDs.push(childID); + // The elements in unseenCrashedChildIDs will only be removed if + // the tab crash page is shown. However, ipc:content-shutdown might + // be fired for processes for which we'll never show the tab crash + // page - for example, the thumbnailing process. Another case to + // consider is if the user is configured to submit backlogged crash + // reports automatically, and a background tab crashes. In that case, + // we will never show the tab crash page, and never remove the element + // from the list. + // + // Instead of trying to account for all of those cases, we prevent + // this list from getting too large by putting a reasonable upper + // limit on how many childIDs we track. It's unlikely that this + // array would ever get so large as to be unwieldy (that'd be a lot + // or crashes!), but a leak is a leak. + if ( + this.unseenCrashedChildIDs.length > MAX_UNSEEN_CRASHED_CHILD_IDS + ) { + this.unseenCrashedChildIDs.shift(); + } + } + + // check for environment affecting crash reporting + let shutdown = Services.env.exists("MOZ_CRASHREPORTER_SHUTDOWN"); + + if (shutdown) { + dump( + "A content process crashed and MOZ_CRASHREPORTER_SHUTDOWN is " + + "set, shutting down\n" + ); + Services.startup.quit( + Ci.nsIAppStartup.eForceQuit, + EXIT_CODE_CONTENT_CRASHED + ); + } + + break; + } + case "oop-frameloader-crashed": { + let browser = aSubject.ownerElement; + if (!browser) { + return; + } + + this.browserMap.set(browser, aSubject.childID); + break; + } + } + }, + + /** + * This should be called once a content process has finished + * shutting down abnormally. Any tabbrowser browsers that were + * selected at the time of the crash will then be sent to + * the crashed tab page. + * + * @param childID (int) + * The childID of the content process that just crashed. + * @returns boolean + * True if one or more browsers were sent to the tab crashed + * page. + */ + flushCrashedBrowserQueue(childID) { + let browserQueue = this.crashedBrowserQueues.get(childID); + if (!browserQueue) { + return false; + } + + this.crashedBrowserQueues.delete(childID); + + let sentBrowser = false; + for (let weakBrowser of browserQueue) { + let browser = weakBrowser.get(); + if (browser) { + if ( + this.restartRequiredBrowsers.has(browser) || + this.testBuildIDMismatch + ) { + this.sendToRestartRequiredPage(browser); + } else { + this.sendToTabCrashedPage(browser); + } + sentBrowser = true; + } + } + + return sentBrowser; + }, + + /** + * Called by a tabbrowser when it notices that its selected browser + * has crashed. This will queue the browser to show the tab crash + * page once the content process has finished tearing down. + * + * @param browser (<xul:browser>) + * The selected browser that just crashed. + * @param restartRequired (bool) + * Whether or not a browser restart is required to recover. + */ + onSelectedBrowserCrash(browser, restartRequired) { + if (!browser.isRemoteBrowser) { + console.error("Selected crashed browser is not remote."); + return; + } + if (!browser.frameLoader) { + console.error("Selected crashed browser has no frameloader."); + return; + } + + let childID = browser.frameLoader.childID; + + let browserQueue = this.crashedBrowserQueues.get(childID); + if (!browserQueue) { + browserQueue = []; + this.crashedBrowserQueues.set(childID, browserQueue); + } + // It's probably unnecessary to store this browser as a + // weak reference, since the content process should complete + // its teardown in the same tick of the event loop, and then + // this queue will be flushed. The weak reference is to avoid + // leaking browsers in case anything goes wrong during this + // teardown process. + browserQueue.push(Cu.getWeakReference(browser)); + + if (restartRequired) { + this.restartRequiredBrowsers.add(browser); + } + + // In the event that the content process failed to launch, then + // the childID will be 0. In that case, we will never receive + // a dumpID nor an ipc:content-shutdown observer notification, + // so we should flush the queue for childID 0 immediately. + if (childID == 0) { + this.flushCrashedBrowserQueue(0); + } + }, + + /** + * Called by a tabbrowser when it notices that a background browser + * has crashed. This will flip its remoteness to non-remote, and attempt + * to revive the crashed tab so that upon selection the tab either shows + * an error page, or automatically restores. + * + * @param browser (<xul:browser>) + * The background browser that just crashed. + * @param restartRequired (bool) + * Whether or not a browser restart is required to recover. + */ + onBackgroundBrowserCrash(browser, restartRequired) { + if (restartRequired) { + this.restartRequiredBrowsers.add(browser); + } + + let gBrowser = browser.getTabBrowser(); + let tab = gBrowser.getTabForBrowser(browser); + + gBrowser.updateBrowserRemoteness(browser, { + remoteType: lazy.E10SUtils.NOT_REMOTE, + }); + + lazy.SessionStore.reviveCrashedTab(tab); + }, + + /** + * Called when a subframe crashes. If the dump is available, shows a subframe + * crashed notification, otherwise waits for one to be available. + * + * @param browser (<xul:browser>) + * The browser containing the frame that just crashed. + * @param childId + * The id of the process that just crashed. + */ + async onSubFrameCrash(browser, childID) { + if (!AppConstants.MOZ_CRASHREPORTER) { + return; + } + + // If a crash dump is available, use it. Otherwise, add the child id to the pending + // subframe crashes list, and wait for the crash "ipc:content-shutdown" notification + // to get the minidump. If it never arrives, don't show the notification. + let dumpID = this.childMap.get(childID); + if (dumpID) { + this.showSubFrameNotification(browser, childID, dumpID); + } else { + let item = this.pendingSubFrameCrashes.get(childID); + if (!item) { + item = new BrowserWeakMap(); + this.pendingSubFrameCrashes.set(childID, item); + + // Add the childID to an array that only has room for MAX_UNSEEN_CRASHED_SUBFRAME_IDS + // items. If there is no more room, pop the oldest off and remove it. This technique + // is used instead of a timeout. + if ( + this.pendingSubFrameCrashesIDs.length >= + MAX_UNSEEN_CRASHED_SUBFRAME_IDS + ) { + let idToDelete = this.pendingSubFrameCrashesIDs.shift(); + this.pendingSubFrameCrashes.delete(idToDelete); + } + this.pendingSubFrameCrashesIDs.push(childID); + } + item.set(browser, browser); + } + }, + + /** + * Given a childID, retrieve the subframe crash info for it + * from the pendingSubFrameCrashes map. The data is removed + * from the map and returned. + * + * @param childID number + * childID of the content that crashed. + * @returns subframe crash info added by previous call to onSubFrameCrash. + */ + getAndRemoveSubframeCrash(childID) { + let item = this.pendingSubFrameCrashes.get(childID); + if (item) { + this.pendingSubFrameCrashes.delete(childID); + let idx = this.pendingSubFrameCrashesIDs.indexOf(childID); + if (idx >= 0) { + this.pendingSubFrameCrashesIDs.splice(idx, 1); + } + } + + return item; + }, + + /** + * Called to indicate that a subframe within a browser has crashed. A notification + * bar will be shown. + * + * @param browser (<xul:browser>) + * The browser containing the frame that just crashed. + * @param childId + * The id of the process that just crashed. + * @param dumpID + * Minidump id of the crash. + */ + showSubFrameNotification(browser, childID, dumpID) { + let gBrowser = browser.getTabBrowser(); + let notificationBox = gBrowser.getNotificationBox(browser); + + const value = "subframe-crashed"; + let notification = notificationBox.getNotificationWithValue(value); + if (notification) { + // Don't show multiple notifications for a browser. + return; + } + + let closeAllNotifications = () => { + // Close all other notifications on other tabs that might + // be open for the same crashed process. + let existingItem = this.notificationsMap.get(childID); + if (existingItem) { + for (let notif of existingItem.slice()) { + notif.close(); + } + } + }; + + gBrowser.ownerGlobal.MozXULElement.insertFTLIfNeeded( + "browser/contentCrash.ftl" + ); + + let buttons = [ + { + "l10n-id": "crashed-subframe-learnmore-link", + popup: null, + link: SUBFRAMECRASH_LEARNMORE_URI, + }, + { + "l10n-id": "crashed-subframe-submit", + popup: null, + callback: async () => { + if (dumpID) { + UnsubmittedCrashHandler.submitReports( + [dumpID], + lazy.CrashSubmit.SUBMITTED_FROM_CRASH_TAB + ); + } + closeAllNotifications(); + }, + }, + ]; + + notification = notificationBox.appendNotification( + value, + { + label: { "l10n-id": "crashed-subframe-message" }, + image: TABCRASHED_ICON_URI, + priority: notificationBox.PRIORITY_INFO_MEDIUM, + eventCallback: eventName => { + if (eventName == "disconnected") { + let existingItem = this.notificationsMap.get(childID); + if (existingItem) { + let idx = existingItem.indexOf(notification); + if (idx >= 0) { + existingItem.splice(idx, 1); + } + + if (!existingItem.length) { + this.notificationsMap.delete(childID); + } + } + } else if (eventName == "dismissed") { + if (dumpID) { + lazy.CrashSubmit.ignore(dumpID); + this.childMap.delete(childID); + } + + closeAllNotifications(); + } + }, + }, + buttons + ); + + let existingItem = this.notificationsMap.get(childID); + if (existingItem) { + existingItem.push(notification); + } else { + this.notificationsMap.set(childID, [notification]); + } + }, + + /** + * This method is exposed for SessionStore to call if the user selects + * a tab which will restore on demand. It's possible that the tab + * is in this state because it recently crashed. If that's the case, then + * it's also possible that the user has not seen the tab crash page for + * that particular crash, in which case, we might show it to them instead + * of restoring the tab. + * + * @param browser (<xul:browser>) + * A browser from a browser tab that the user has just selected + * to restore on demand. + * @returns (boolean) + * True if TabCrashHandler will send the user to the tab crash + * page instead. + */ + willShowCrashedTab(browser) { + let childID = this.browserMap.get(browser); + // We will only show the tab crash page if: + // 1) We are aware that this browser crashed + // 2) We know we've never shown the tab crash page for the + // crash yet + // 3) The user is not configured to automatically submit backlogged + // crash reports. If they are, we'll send the crash report + // immediately. + if (childID && this.unseenCrashedChildIDs.includes(childID)) { + if (UnsubmittedCrashHandler.autoSubmit) { + let dumpID = this.childMap.get(childID); + if (dumpID) { + UnsubmittedCrashHandler.submitReports( + [dumpID], + lazy.CrashSubmit.SUBMITTED_FROM_AUTO + ); + } + } else { + this.sendToTabCrashedPage(browser); + return true; + } + } else if (childID === 0) { + if (this.restartRequiredBrowsers.has(browser)) { + this.sendToRestartRequiredPage(browser); + } else { + this.sendToTabCrashedPage(browser); + } + return true; + } + + return false; + }, + + sendToRestartRequiredPage(browser) { + let uri = browser.currentURI; + let gBrowser = browser.getTabBrowser(); + let tab = gBrowser.getTabForBrowser(browser); + // The restart required page is non-remote by default. + gBrowser.updateBrowserRemoteness(browser, { + remoteType: lazy.E10SUtils.NOT_REMOTE, + }); + + browser.docShell.displayLoadError(Cr.NS_ERROR_BUILDID_MISMATCH, uri, null); + tab.setAttribute("crashed", true); + gBrowser.tabContainer.updateTabIndicatorAttr(tab); + + // Make sure to only count once even if there are multiple windows + // that will all show about:restartrequired. + if (this._crashedTabCount == 1) { + Services.telemetry.scalarAdd("dom.contentprocess.buildID_mismatch", 1); + } + }, + + /** + * We show a special page to users when a normal browser tab has crashed. + * This method should be called to send a browser to that page once the + * process has completely closed. + * + * @param browser (<xul:browser>) + * The browser that has recently crashed. + */ + sendToTabCrashedPage(browser) { + let title = browser.contentTitle; + let uri = browser.currentURI; + let gBrowser = browser.getTabBrowser(); + let tab = gBrowser.getTabForBrowser(browser); + // The tab crashed page is non-remote by default. + gBrowser.updateBrowserRemoteness(browser, { + remoteType: lazy.E10SUtils.NOT_REMOTE, + }); + + browser.setAttribute("crashedPageTitle", title); + browser.docShell.displayLoadError(Cr.NS_ERROR_CONTENT_CRASHED, uri, null); + browser.removeAttribute("crashedPageTitle"); + tab.setAttribute("crashed", true); + gBrowser.tabContainer.updateTabIndicatorAttr(tab); + }, + + /** + * Submits a crash report from about:tabcrashed, if the crash + * reporter is enabled and a crash report can be found. + * + * @param browser + * The <xul:browser> that the report was sent from. + * @param message + * Message data with the following properties: + * + * includeURL (bool): + * Whether to include the URL that the user was on + * in the crashed tab before the crash occurred. + * URL (String) + * The URL that the user was on in the crashed tab + * before the crash occurred. + * comments (String): + * Any additional comments from the user. + * + * Note that it is expected that all properties are set, + * even if they are empty. + */ + maybeSendCrashReport(browser, message) { + if (!AppConstants.MOZ_CRASHREPORTER) { + return; + } + + if (!message.data.hasReport) { + // There was no report, so nothing to do. + return; + } + + if (message.data.autoSubmit) { + // The user has opted in to autosubmitted backlogged + // crash reports in the future. + UnsubmittedCrashHandler.autoSubmit = true; + } + + let childID = this.browserMap.get(browser); + let dumpID = this.childMap.get(childID); + if (!dumpID) { + return; + } + + if (!message.data.sendReport) { + Services.telemetry + .getHistogramById("FX_CONTENT_CRASH_NOT_SUBMITTED") + .add(1); + this.prefs.setBoolPref("sendReport", false); + return; + } + + let { includeURL, comments, URL } = message.data; + + let extraExtraKeyVals = { + Comments: comments, + URL, + }; + + // For the entries in extraExtraKeyVals, we only want to submit the + // extra data values where they are not the empty string. + for (let key in extraExtraKeyVals) { + let val = extraExtraKeyVals[key].trim(); + if (!val) { + delete extraExtraKeyVals[key]; + } + } + + // URL is special, since it's already been written to extra data by + // default. In order to make sure we don't send it, we overwrite it + // with the empty string. + if (!includeURL) { + extraExtraKeyVals.URL = ""; + } + + lazy.CrashSubmit.submit(dumpID, lazy.CrashSubmit.SUBMITTED_FROM_CRASH_TAB, { + recordSubmission: true, + extraExtraKeyVals, + }).catch(console.error); + + this.prefs.setBoolPref("sendReport", true); + this.prefs.setBoolPref("includeURL", includeURL); + + this.childMap.set(childID, null); // Avoid resubmission. + this.removeSubmitCheckboxesForSameCrash(childID); + }, + + removeSubmitCheckboxesForSameCrash(childID) { + for (let window of Services.wm.getEnumerator("navigator:browser")) { + if (!window.gMultiProcessBrowser) { + continue; + } + + for (let browser of window.gBrowser.browsers) { + if (browser.isRemoteBrowser) { + continue; + } + + let doc = browser.contentDocument; + if (!doc.documentURI.startsWith("about:tabcrashed")) { + continue; + } + + if (this.browserMap.get(browser) == childID) { + this.browserMap.delete(browser); + browser.sendMessageToActor("CrashReportSent", {}, "AboutTabCrashed"); + } + } + } + }, + + /** + * Process a crashed tab loaded into a browser. + * + * @param browser + * The <xul:browser> containing the page that crashed. + * @returns crash data + * Message data containing information about the crash. + */ + onAboutTabCrashedLoad(browser) { + this._crashedTabCount++; + + let window = browser.ownerGlobal; + + // Reset the zoom for the tabcrashed page. + window.ZoomManager.setZoomForBrowser(browser, 1); + + let childID = this.browserMap.get(browser); + let index = this.unseenCrashedChildIDs.indexOf(childID); + if (index != -1) { + this.unseenCrashedChildIDs.splice(index, 1); + } + + let dumpID = this.getDumpID(browser); + if (!dumpID) { + return { + hasReport: false, + }; + } + + let requestAutoSubmit = !UnsubmittedCrashHandler.autoSubmit; + let sendReport = this.prefs.getBoolPref("sendReport"); + let includeURL = this.prefs.getBoolPref("includeURL"); + + let data = { + hasReport: true, + sendReport, + includeURL, + requestAutoSubmit, + }; + + return data; + }, + + onAboutTabCrashedUnload(browser) { + if (!this._crashedTabCount) { + console.error("Can not decrement crashed tab count to below 0"); + return; + } + this._crashedTabCount--; + + let childID = this.browserMap.get(browser); + + // Make sure to only count once even if there are multiple windows + // that will all show about:tabcrashed. + if (this._crashedTabCount == 0 && childID) { + Services.telemetry + .getHistogramById("FX_CONTENT_CRASH_NOT_SUBMITTED") + .add(1); + } + }, + + /** + * For some <xul:browser>, return a crash report dump ID for that browser + * if we have been informed of one. Otherwise, return null. + * + * @param browser (<xul:browser) + * The browser to try to get the dump ID for + * @returns dumpID (String) + */ + getDumpID(browser) { + if (!AppConstants.MOZ_CRASHREPORTER) { + return null; + } + + return this.childMap.get(this.browserMap.get(browser)); + }, + + /** + * This is intended for TESTING ONLY. It returns the amount of + * content processes that have crashed such that we're still waiting + * for dump IDs for their crash reports. + * + * For our automated tests, accessing the crashed content process + * count helps us test the behaviour when content processes crash due + * to launch failure, since in those cases we should not increase the + * crashed browser queue (since we never receive dump IDs for launch + * failures). + */ + get queuedCrashedBrowsers() { + return this.crashedBrowserQueues.size; + }, +}; + +/** + * This component is responsible for scanning the pending + * crash report directory for reports, and (if enabled), to + * prompt the user to submit those reports. It might also + * submit those reports automatically without prompting if + * the user has opted in. + */ +var UnsubmittedCrashHandler = { + get prefs() { + delete this.prefs; + return (this.prefs = Services.prefs.getBranch( + "browser.crashReports.unsubmittedCheck." + )); + }, + + get enabled() { + return this.prefs.getBoolPref("enabled"); + }, + + // showingNotification is set to true once a notification + // is successfully shown, and then set back to false if + // the notification is dismissed by an action by the user. + showingNotification: false, + // suppressed is true if we've determined that we've shown + // the notification too many times across too many days without + // user interaction, so we're suppressing the notification for + // some number of days. See the documentation for + // shouldShowPendingSubmissionsNotification(). + suppressed: false, + + _checkTimeout: null, + + init() { + if (this.initialized) { + return; + } + + this.initialized = true; + + // UnsubmittedCrashHandler can be initialized but still be disabled. + // This is intentional, as this makes simulating UnsubmittedCrashHandler's + // reactions to browser startup and shutdown easier in test automation. + // + // UnsubmittedCrashHandler, when initialized but not enabled, is inert. + if (this.enabled) { + if (this.prefs.prefHasUserValue("suppressUntilDate")) { + if (this.prefs.getCharPref("suppressUntilDate") > this.dateString()) { + // We'll be suppressing any notifications until after suppressedDate, + // so there's no need to do anything more. + this.suppressed = true; + return; + } + + // We're done suppressing, so we don't need this pref anymore. + this.prefs.clearUserPref("suppressUntilDate"); + } + + Services.obs.addObserver(this, "profile-before-change"); + } + }, + + uninit() { + if (!this.initialized) { + return; + } + + this.initialized = false; + + if (this._checkTimeout) { + lazy.clearTimeout(this._checkTimeout); + this._checkTimeout = null; + } + + if (!this.enabled) { + return; + } + + if (this.suppressed) { + this.suppressed = false; + // No need to do any more clean-up, since we were suppressed. + return; + } + + if (this.showingNotification) { + this.prefs.setBoolPref("shutdownWhileShowing", true); + this.showingNotification = false; + } + + Services.obs.removeObserver(this, "profile-before-change"); + }, + + observe(subject, topic, data) { + switch (topic) { + case "profile-before-change": { + this.uninit(); + break; + } + } + }, + + scheduleCheckForUnsubmittedCrashReports() { + this._checkTimeout = lazy.setTimeout(() => { + Services.tm.idleDispatchToMainThread(() => { + this.checkForUnsubmittedCrashReports(); + }); + }, CHECK_FOR_UNSUBMITTED_CRASH_REPORTS_DELAY_MS); + }, + + /** + * Scans the profile directory for unsubmitted crash reports + * within the past PENDING_CRASH_REPORT_DAYS days. If it + * finds any, it will, if necessary, attempt to open a notification + * bar to prompt the user to submit them. + * + * @returns Promise + * Resolves with the <xul:notification> after it tries to + * show a notification on the most recent browser window. + * If a notification cannot be shown, will resolve with null. + */ + async checkForUnsubmittedCrashReports() { + if (!this.enabled || this.suppressed) { + return null; + } + + let dateLimit = new Date(); + dateLimit.setDate(dateLimit.getDate() - PENDING_CRASH_REPORT_DAYS); + + let reportIDs = []; + try { + reportIDs = await lazy.CrashSubmit.pendingIDs(dateLimit); + } catch (e) { + console.error(e); + return null; + } + + if (reportIDs.length) { + if (this.autoSubmit) { + this.submitReports(reportIDs, lazy.CrashSubmit.SUBMITTED_FROM_AUTO); + } else if (this.shouldShowPendingSubmissionsNotification()) { + return this.showPendingSubmissionsNotification(reportIDs); + } + } + return null; + }, + + /** + * Returns true if the notification should be shown. + * shouldShowPendingSubmissionsNotification makes this decision + * by looking at whether or not the user has seen the notification + * over several days without ever interacting with it. If this occurs + * too many times, we suppress the notification for DAYS_TO_SUPPRESS + * days. + * + * @returns bool + */ + shouldShowPendingSubmissionsNotification() { + if (!this.prefs.prefHasUserValue("shutdownWhileShowing")) { + return true; + } + + let shutdownWhileShowing = this.prefs.getBoolPref("shutdownWhileShowing"); + this.prefs.clearUserPref("shutdownWhileShowing"); + + if (!this.prefs.prefHasUserValue("lastShownDate")) { + // This isn't expected, but we're being defensive here. We'll + // opt for showing the notification in this case. + return true; + } + + let lastShownDate = this.prefs.getCharPref("lastShownDate"); + if (this.dateString() > lastShownDate && shutdownWhileShowing) { + // We're on a newer day then when we last showed the + // notification without closing it. We don't want to do + // this too many times, so we'll decrement a counter for + // this situation. Too many of these, and we'll assume the + // user doesn't know or care about unsubmitted notifications, + // and we'll suppress the notification for a while. + let chances = this.prefs.getIntPref("chancesUntilSuppress"); + if (--chances < 0) { + // We're out of chances! + this.prefs.clearUserPref("chancesUntilSuppress"); + // We'll suppress for DAYS_TO_SUPPRESS days. + let suppressUntil = this.dateString( + new Date(Date.now() + DAY * DAYS_TO_SUPPRESS) + ); + this.prefs.setCharPref("suppressUntilDate", suppressUntil); + return false; + } + this.prefs.setIntPref("chancesUntilSuppress", chances); + } + + return true; + }, + + /** + * Given an array of unsubmitted crash report IDs, try to open + * up a notification asking the user to submit them. + * + * @param reportIDs (Array<string>) + * The Array of report IDs to offer the user to send. + * @returns The <xul:notification> if one is shown. null otherwise. + */ + showPendingSubmissionsNotification(reportIDs) { + if (!reportIDs.length) { + return null; + } + + let notification = this.show({ + notificationID: "pending-crash-reports", + reportIDs, + onAction: () => { + this.showingNotification = false; + }, + }); + + if (notification) { + this.showingNotification = true; + this.prefs.setCharPref("lastShownDate", this.dateString()); + } + + return notification; + }, + + /** + * Returns a string representation of a Date in the format + * YYYYMMDD. + * + * @param someDate (Date, optional) + * The Date to convert to the string. If not provided, + * defaults to today's date. + * @returns String + */ + dateString(someDate = new Date()) { + let year = String(someDate.getFullYear()).padStart(4, "0"); + let month = String(someDate.getMonth() + 1).padStart(2, "0"); + let day = String(someDate.getDate()).padStart(2, "0"); + return year + month + day; + }, + + /** + * Attempts to show a notification bar to the user in the most + * recent browser window asking them to submit some crash report + * IDs. If a notification cannot be shown (for example, there + * is no browser window), this method exits silently. + * + * The notification will allow the user to submit their crash + * reports. If the user dismissed the notification, the crash + * reports will be marked to be ignored (though they can + * still be manually submitted via about:crashes). + * + * @param JS Object + * An Object with the following properties: + * + * notificationID (string) + * The ID for the notification to be opened. + * + * reportIDs (Array<string>) + * The array of report IDs to offer to the user. + * + * onAction (function, optional) + * A callback to fire once the user performs an + * action on the notification bar (this includes + * dismissing the notification). + * + * @returns The <xul:notification> if one is shown. null otherwise. + */ + show({ notificationID, reportIDs, onAction }) { + let chromeWin = lazy.BrowserWindowTracker.getTopWindow(); + if (!chromeWin) { + // Can't show a notification in this case. We'll hopefully + // get another opportunity to have the user submit their + // crash reports later. + return null; + } + + let notification = + chromeWin.gNotificationBox.getNotificationWithValue(notificationID); + if (notification) { + return null; + } + + chromeWin.MozXULElement.insertFTLIfNeeded("browser/contentCrash.ftl"); + + let buttons = [ + { + "l10n-id": "pending-crash-reports-send", + callback: () => { + this.submitReports( + reportIDs, + lazy.CrashSubmit.SUBMITTED_FROM_INFOBAR + ); + if (onAction) { + onAction(); + } + }, + }, + { + "l10n-id": "pending-crash-reports-always-send", + callback: () => { + this.autoSubmit = true; + this.submitReports( + reportIDs, + lazy.CrashSubmit.SUBMITTED_FROM_INFOBAR + ); + if (onAction) { + onAction(); + } + }, + }, + { + "l10n-id": "pending-crash-reports-view-all", + callback() { + chromeWin.openTrustedLinkIn("about:crashes", "tab"); + return true; + }, + }, + ]; + + let eventCallback = eventType => { + if (eventType == "dismissed") { + // The user intentionally dismissed the notification, + // which we interpret as meaning that they don't care + // to submit the reports. We'll ignore these particular + // reports going forward. + reportIDs.forEach(function (reportID) { + lazy.CrashSubmit.ignore(reportID); + }); + if (onAction) { + onAction(); + } + } + }; + + return chromeWin.gNotificationBox.appendNotification( + notificationID, + { + label: { + "l10n-id": "pending-crash-reports-message", + "l10n-args": { reportCount: reportIDs.length }, + }, + image: TABCRASHED_ICON_URI, + priority: chromeWin.gNotificationBox.PRIORITY_INFO_HIGH, + eventCallback, + }, + buttons + ); + }, + + get autoSubmit() { + return Services.prefs.getBoolPref( + "browser.crashReports.unsubmittedCheck.autoSubmit2" + ); + }, + + set autoSubmit(val) { + Services.prefs.setBoolPref( + "browser.crashReports.unsubmittedCheck.autoSubmit2", + val + ); + }, + + /** + * Attempt to submit reports to the crash report server. + * + * @param reportIDs (Array<string>) + * The array of reportIDs to submit. + * @param submittedFrom (string) + * One of the CrashSubmit.SUBMITTED_FROM_* constants representing + * how this crash was submitted. + */ + submitReports(reportIDs, submittedFrom) { + for (let reportID of reportIDs) { + lazy.CrashSubmit.submit(reportID, submittedFrom).catch(console.error); + } + }, +}; |