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gecko/services/sync/modules/policies.js

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/* ***** BEGIN LICENSE BLOCK *****
* Version: MPL 1.1/GPL 2.0/LGPL 2.1
*
* The contents of this file are subject to the Mozilla Public License Version
* 1.1 (the "License"); you may not use this file except in compliance with
* the License. You may obtain a copy of the License at
* http://www.mozilla.org/MPL/
*
* Software distributed under the License is distributed on an "AS IS" basis,
* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
* for the specific language governing rights and limitations under the
* License.
*
* The Original Code is Firefox Sync.
*
* The Initial Developer of the Original Code is
* the Mozilla Foundation.
* Portions created by the Initial Developer are Copyright (C) 2011
* the Initial Developer. All Rights Reserved.
*
* Contributor(s):
* Marina Samuel <msamuel@mozilla.com>
* Philipp von Weitershausen <philipp@weitershausen.de>
* Chenxia Liu <liuche@mozilla.com>
*
* Alternatively, the contents of this file may be used under the terms of
* either the GNU General Public License Version 2 or later (the "GPL"), or
* the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
* in which case the provisions of the GPL or the LGPL are applicable instead
* of those above. If you wish to allow use of your version of this file only
* under the terms of either the GPL or the LGPL, and not to allow others to
* use your version of this file under the terms of the MPL, indicate your
* decision by deleting the provisions above and replace them with the notice
* and other provisions required by the GPL or the LGPL. If you do not delete
* the provisions above, a recipient may use your version of this file under
* the terms of any one of the MPL, the GPL or the LGPL.
*
* ***** END LICENSE BLOCK ***** */
const EXPORTED_SYMBOLS = ["SyncScheduler",
"ErrorHandler",
"SendCredentialsController"];
const {classes: Cc, interfaces: Ci, utils: Cu, results: Cr} = Components;
Cu.import("resource://services-sync/constants.js");
Cu.import("resource://services-sync/log4moz.js");
Cu.import("resource://services-sync/util.js");
Cu.import("resource://services-sync/engines.js");
Cu.import("resource://services-sync/engines/clients.js");
Cu.import("resource://services-sync/status.js");
Cu.import("resource://services-sync/main.js"); // So we can get to Service for callbacks.
let SyncScheduler = {
_log: Log4Moz.repository.getLogger("Sync.SyncScheduler"),
_fatalLoginStatus: [LOGIN_FAILED_NO_USERNAME,
LOGIN_FAILED_NO_PASSWORD,
LOGIN_FAILED_NO_PASSPHRASE,
LOGIN_FAILED_INVALID_PASSPHRASE,
LOGIN_FAILED_LOGIN_REJECTED],
/**
* The nsITimer object that schedules the next sync. See scheduleNextSync().
*/
syncTimer: null,
setDefaults: function setDefaults() {
this._log.trace("Setting SyncScheduler policy values to defaults.");
this.singleDeviceInterval = Svc.Prefs.get("scheduler.singleDeviceInterval") * 1000;
this.idleInterval = Svc.Prefs.get("scheduler.idleInterval") * 1000;
this.activeInterval = Svc.Prefs.get("scheduler.activeInterval") * 1000;
this.immediateInterval = Svc.Prefs.get("scheduler.immediateInterval") * 1000;
// A user is non-idle on startup by default.
this.idle = false;
this.hasIncomingItems = false;
this.clearSyncTriggers();
},
// nextSync is in milliseconds, but prefs can't hold that much
get nextSync() Svc.Prefs.get("nextSync", 0) * 1000,
set nextSync(value) Svc.Prefs.set("nextSync", Math.floor(value / 1000)),
get syncInterval() Svc.Prefs.get("syncInterval", this.singleDeviceInterval),
set syncInterval(value) Svc.Prefs.set("syncInterval", value),
get syncThreshold() Svc.Prefs.get("syncThreshold", SINGLE_USER_THRESHOLD),
set syncThreshold(value) Svc.Prefs.set("syncThreshold", value),
get globalScore() Svc.Prefs.get("globalScore", 0),
set globalScore(value) Svc.Prefs.set("globalScore", value),
get numClients() Svc.Prefs.get("numClients", 0),
set numClients(value) Svc.Prefs.set("numClients", value),
init: function init() {
this._log.level = Log4Moz.Level[Svc.Prefs.get("log.logger.service.main")];
this.setDefaults();
Svc.Obs.add("weave:engine:score:updated", this);
Svc.Obs.add("network:offline-status-changed", this);
Svc.Obs.add("weave:service:sync:start", this);
Svc.Obs.add("weave:service:sync:finish", this);
Svc.Obs.add("weave:engine:sync:finish", this);
Svc.Obs.add("weave:engine:sync:error", this);
Svc.Obs.add("weave:service:login:error", this);
Svc.Obs.add("weave:service:logout:finish", this);
Svc.Obs.add("weave:service:sync:error", this);
Svc.Obs.add("weave:service:backoff:interval", this);
Svc.Obs.add("weave:service:ready", this);
Svc.Obs.add("weave:engine:sync:applied", this);
Svc.Obs.add("weave:service:setup-complete", this);
Svc.Obs.add("weave:service:start-over", this);
if (Status.checkSetup() == STATUS_OK) {
Svc.Idle.addIdleObserver(this, Svc.Prefs.get("scheduler.idleTime"));
}
},
observe: function observe(subject, topic, data) {
this._log.trace("Handling " + topic);
switch(topic) {
case "weave:engine:score:updated":
if (Status.login == LOGIN_SUCCEEDED) {
Utils.namedTimer(this.calculateScore, SCORE_UPDATE_DELAY, this,
"_scoreTimer");
}
break;
case "network:offline-status-changed":
// Whether online or offline, we'll reschedule syncs
this._log.trace("Network offline status change: " + data);
this.checkSyncStatus();
break;
case "weave:service:sync:start":
// Clear out any potentially pending syncs now that we're syncing
this.clearSyncTriggers();
// reset backoff info, if the server tells us to continue backing off,
// we'll handle that later
Status.resetBackoff();
this.globalScore = 0;
break;
case "weave:service:sync:finish":
this.nextSync = 0;
this.adjustSyncInterval();
if (Status.service == SYNC_FAILED_PARTIAL && this.requiresBackoff) {
this.requiresBackoff = false;
this.handleSyncError();
return;
}
let sync_interval;
this._syncErrors = 0;
if (Status.sync == NO_SYNC_NODE_FOUND) {
this._log.trace("Scheduling a sync at interval NO_SYNC_NODE_FOUND.");
sync_interval = NO_SYNC_NODE_INTERVAL;
}
this.scheduleNextSync(sync_interval);
break;
case "weave:engine:sync:finish":
if (data == "clients") {
// Update the client mode because it might change what we sync.
this.updateClientMode();
}
break;
case "weave:engine:sync:error":
// `subject` is the exception thrown by an engine's sync() method.
let exception = subject;
if (exception.status >= 500 && exception.status <= 504) {
this.requiresBackoff = true;
}
break;
case "weave:service:login:error":
this.clearSyncTriggers();
if (Status.login == MASTER_PASSWORD_LOCKED) {
// Try again later, just as if we threw an error... only without the
// error count.
this._log.debug("Couldn't log in: master password is locked.");
this._log.trace("Scheduling a sync at MASTER_PASSWORD_LOCKED_RETRY_INTERVAL");
this.scheduleAtInterval(MASTER_PASSWORD_LOCKED_RETRY_INTERVAL);
} else if (this._fatalLoginStatus.indexOf(Status.login) == -1) {
// Not a fatal login error, just an intermittent network or server
// issue. Keep on syncin'.
this.checkSyncStatus();
}
break;
case "weave:service:logout:finish":
// Start or cancel the sync timer depending on if
// logged in or logged out
this.checkSyncStatus();
break;
case "weave:service:sync:error":
// There may be multiple clients but if the sync fails, client mode
// should still be updated so that the next sync has a correct interval.
this.updateClientMode();
this.adjustSyncInterval();
this.nextSync = 0;
this.handleSyncError();
break;
case "weave:service:backoff:interval":
let requested_interval = subject * 1000;
// Leave up to 25% more time for the back off.
let interval = requested_interval * (1 + Math.random() * 0.25);
Status.backoffInterval = interval;
Status.minimumNextSync = Date.now() + requested_interval;
break;
case "weave:service:ready":
// Applications can specify this preference if they want autoconnect
// to happen after a fixed delay.
let delay = Svc.Prefs.get("autoconnectDelay");
if (delay) {
this.delayedAutoConnect(delay);
}
break;
case "weave:engine:sync:applied":
let numItems = subject.applied;
this._log.trace("Engine " + data + " applied " + numItems + " items.");
if (numItems)
this.hasIncomingItems = true;
break;
case "weave:service:setup-complete":
Svc.Idle.addIdleObserver(this, Svc.Prefs.get("scheduler.idleTime"));
break;
case "weave:service:start-over":
SyncScheduler.setDefaults();
try {
Svc.Idle.removeIdleObserver(this, Svc.Prefs.get("scheduler.idleTime"));
} catch (ex if (ex.result == Cr.NS_ERROR_FAILURE)) {
// In all likelihood we didn't have an idle observer registered yet.
// It's all good.
}
break;
case "idle":
this._log.trace("We're idle.");
this.idle = true;
// Adjust the interval for future syncs. This won't actually have any
// effect until the next pending sync (which will happen soon since we
// were just active.)
this.adjustSyncInterval();
break;
case "back":
this._log.trace("Received notification that we're back from idle.");
this.idle = false;
Utils.namedTimer(function onBack() {
if (this.idle) {
this._log.trace("... and we're idle again. " +
"Ignoring spurious back notification.");
return;
}
this._log.trace("Genuine return from idle. Syncing.");
// Trigger a sync if we have multiple clients.
if (this.numClients > 1) {
this.scheduleNextSync(0);
}
}, IDLE_OBSERVER_BACK_DELAY, this, "idleDebouncerTimer");
break;
}
},
adjustSyncInterval: function adjustSyncInterval() {
if (this.numClients <= 1) {
this._log.trace("Adjusting syncInterval to singleDeviceInterval.");
this.syncInterval = this.singleDeviceInterval;
return;
}
// Only MULTI_DEVICE clients will enter this if statement
// since SINGLE_USER clients will be handled above.
if (this.idle) {
this._log.trace("Adjusting syncInterval to idleInterval.");
this.syncInterval = this.idleInterval;
return;
}
if (this.hasIncomingItems) {
this._log.trace("Adjusting syncInterval to immediateInterval.");
this.hasIncomingItems = false;
this.syncInterval = this.immediateInterval;
} else {
this._log.trace("Adjusting syncInterval to activeInterval.");
this.syncInterval = this.activeInterval;
}
},
calculateScore: function calculateScore() {
let engines = [Clients].concat(Engines.getEnabled());
for (let i = 0;i < engines.length;i++) {
this._log.trace(engines[i].name + ": score: " + engines[i].score);
this.globalScore += engines[i].score;
engines[i]._tracker.resetScore();
}
this._log.trace("Global score updated: " + this.globalScore);
this.checkSyncStatus();
},
/**
* Process the locally stored clients list to figure out what mode to be in
*/
updateClientMode: function updateClientMode() {
// Nothing to do if it's the same amount
let numClients = Clients.stats.numClients;
if (this.numClients == numClients)
return;
this._log.debug("Client count: " + this.numClients + " -> " + numClients);
this.numClients = numClients;
if (numClients <= 1) {
this._log.trace("Adjusting syncThreshold to SINGLE_USER_THRESHOLD");
this.syncThreshold = SINGLE_USER_THRESHOLD;
} else {
this._log.trace("Adjusting syncThreshold to MULTI_DEVICE_THRESHOLD");
this.syncThreshold = MULTI_DEVICE_THRESHOLD;
}
this.adjustSyncInterval();
},
/**
* Check if we should be syncing and schedule the next sync, if it's not scheduled
*/
checkSyncStatus: function checkSyncStatus() {
// Should we be syncing now, if not, cancel any sync timers and return
// if we're in backoff, we'll schedule the next sync.
let ignore = [kSyncBackoffNotMet, kSyncMasterPasswordLocked];
let skip = Weave.Service._checkSync(ignore);
this._log.trace("_checkSync returned \"" + skip + "\".");
if (skip) {
this.clearSyncTriggers();
return;
}
// Only set the wait time to 0 if we need to sync right away
let wait;
if (this.globalScore > this.syncThreshold) {
this._log.debug("Global Score threshold hit, triggering sync.");
wait = 0;
}
this.scheduleNextSync(wait);
},
/**
* Call sync() if Master Password is not locked.
*
* Otherwise, reschedule a sync for later.
*/
syncIfMPUnlocked: function syncIfMPUnlocked() {
// No point if we got kicked out by the master password dialog.
if (Status.login == MASTER_PASSWORD_LOCKED &&
Utils.mpLocked()) {
this._log.debug("Not initiating sync: Login status is " + Status.login);
// If we're not syncing now, we need to schedule the next one.
this._log.trace("Scheduling a sync at MASTER_PASSWORD_LOCKED_RETRY_INTERVAL");
this.scheduleAtInterval(MASTER_PASSWORD_LOCKED_RETRY_INTERVAL);
return;
}
Utils.nextTick(Weave.Service.sync, Weave.Service);
},
/**
* Set a timer for the next sync
*/
scheduleNextSync: function scheduleNextSync(interval) {
// If no interval was specified, use the current sync interval.
if (interval == null) {
interval = this.syncInterval;
}
// Ensure the interval is set to no less than the backoff.
if (Status.backoffInterval && interval < Status.backoffInterval) {
this._log.trace("Requested interval " + interval +
" ms is smaller than the backoff interval. " +
"Using backoff interval " +
Status.backoffInterval + " ms instead.");
interval = Status.backoffInterval;
}
if (this.nextSync != 0) {
// There's already a sync scheduled. Don't reschedule if there's already
// a timer scheduled for sooner than requested.
let currentInterval = this.nextSync - Date.now();
this._log.trace("There's already a sync scheduled in " +
currentInterval + " ms.");
if (currentInterval < interval && this.syncTimer) {
this._log.trace("Ignoring scheduling request for next sync in " +
interval + " ms.");
return;
}
}
// Start the sync right away if we're already late.
if (interval <= 0) {
this._log.trace("Requested sync should happen right away.");
this.syncIfMPUnlocked();
return;
}
this._log.debug("Next sync in " + interval + " ms.");
Utils.namedTimer(this.syncIfMPUnlocked, interval, this, "syncTimer");
// Save the next sync time in-case sync is disabled (logout/offline/etc.)
this.nextSync = Date.now() + interval;
},
/**
* Incorporates the backoff/retry logic used in error handling and elective
* non-syncing.
*/
scheduleAtInterval: function scheduleAtInterval(minimumInterval) {
let interval = Utils.calculateBackoff(this._syncErrors, MINIMUM_BACKOFF_INTERVAL);
if (minimumInterval) {
interval = Math.max(minimumInterval, interval);
}
this._log.debug("Starting client-initiated backoff. Next sync in " +
interval + " ms.");
this.scheduleNextSync(interval);
},
/**
* Automatically start syncing after the given delay (in seconds).
*
* Applications can define the `services.sync.autoconnectDelay` preference
* to have this called automatically during start-up with the pref value as
* the argument. Alternatively, they can call it themselves to control when
* Sync should first start to sync.
*/
delayedAutoConnect: function delayedAutoConnect(delay) {
if (Weave.Service._checkSetup() == STATUS_OK) {
Utils.namedTimer(this.autoConnect, delay * 1000, this, "_autoTimer");
}
},
autoConnect: function autoConnect() {
if (Weave.Service._checkSetup() == STATUS_OK && !Weave.Service._checkSync()) {
// Schedule a sync based on when a previous sync was scheduled.
// scheduleNextSync() will do the right thing if that time lies in
// the past.
this.scheduleNextSync(this.nextSync - Date.now());
}
// Once autoConnect is called we no longer need _autoTimer.
if (this._autoTimer) {
this._autoTimer.clear();
}
},
_syncErrors: 0,
/**
* Deal with sync errors appropriately
*/
handleSyncError: function handleSyncError() {
this._log.trace("In handleSyncError. Error count: " + this._syncErrors);
this._syncErrors++;
// Do nothing on the first couple of failures, if we're not in
// backoff due to 5xx errors.
if (!Status.enforceBackoff) {
if (this._syncErrors < MAX_ERROR_COUNT_BEFORE_BACKOFF) {
this.scheduleNextSync();
return;
}
this._log.debug("Sync error count has exceeded " +
MAX_ERROR_COUNT_BEFORE_BACKOFF + "; enforcing backoff.");
Status.enforceBackoff = true;
}
this.scheduleAtInterval();
},
/**
* Remove any timers/observers that might trigger a sync
*/
clearSyncTriggers: function clearSyncTriggers() {
this._log.debug("Clearing sync triggers.");
// Clear out any scheduled syncs
if (this.syncTimer)
this.syncTimer.clear();
}
};
const LOG_PREFIX_SUCCESS = "success-";
const LOG_PREFIX_ERROR = "error-";
let ErrorHandler = {
/**
* Flag that turns on error reporting for all errors, incl. network errors.
*/
dontIgnoreErrors: false,
init: function init() {
Svc.Obs.add("weave:engine:sync:applied", this);
Svc.Obs.add("weave:engine:sync:error", this);
Svc.Obs.add("weave:service:login:error", this);
Svc.Obs.add("weave:service:sync:error", this);
Svc.Obs.add("weave:service:sync:finish", this);
this.initLogs();
},
initLogs: function initLogs() {
this._log = Log4Moz.repository.getLogger("Sync.ErrorHandler");
this._log.level = Log4Moz.Level[Svc.Prefs.get("log.logger.service.main")];
this._cleaningUpFileLogs = false;
let root = Log4Moz.repository.getLogger("Sync");
root.level = Log4Moz.Level[Svc.Prefs.get("log.rootLogger")];
let formatter = new Log4Moz.BasicFormatter();
let capp = new Log4Moz.ConsoleAppender(formatter);
capp.level = Log4Moz.Level[Svc.Prefs.get("log.appender.console")];
root.addAppender(capp);
let dapp = new Log4Moz.DumpAppender(formatter);
dapp.level = Log4Moz.Level[Svc.Prefs.get("log.appender.dump")];
root.addAppender(dapp);
let fapp = this._logAppender = new Log4Moz.StorageStreamAppender(formatter);
fapp.level = Log4Moz.Level[Svc.Prefs.get("log.appender.file.level")];
root.addAppender(fapp);
},
observe: function observe(subject, topic, data) {
this._log.trace("Handling " + topic);
switch(topic) {
case "weave:engine:sync:applied":
if (subject.newFailed) {
// An engine isn't able to apply one or more incoming records.
// We don't fail hard on this, but it usually indicates a bug,
// so for now treat it as sync error (c.f. Service._syncEngine())
Status.engines = [data, ENGINE_APPLY_FAIL];
this._log.debug(data + " failed to apply some records.");
}
break;
case "weave:engine:sync:error":
let exception = subject; // exception thrown by engine's sync() method
let engine_name = data; // engine name that threw the exception
this.checkServerError(exception);
Status.engines = [engine_name, exception.failureCode || ENGINE_UNKNOWN_FAIL];
this._log.debug(engine_name + " failed: " + Utils.exceptionStr(exception));
break;
case "weave:service:login:error":
this.resetFileLog(Svc.Prefs.get("log.appender.file.logOnError"),
LOG_PREFIX_ERROR);
if (this.shouldReportError()) {
this.notifyOnNextTick("weave:ui:login:error");
} else {
this.notifyOnNextTick("weave:ui:clear-error");
}
this.dontIgnoreErrors = false;
break;
case "weave:service:sync:error":
if (Status.sync == CREDENTIALS_CHANGED) {
Weave.Service.logout();
}
this.resetFileLog(Svc.Prefs.get("log.appender.file.logOnError"),
LOG_PREFIX_ERROR);
if (this.shouldReportError()) {
this.notifyOnNextTick("weave:ui:sync:error");
} else {
this.notifyOnNextTick("weave:ui:sync:finish");
}
this.dontIgnoreErrors = false;
break;
case "weave:service:sync:finish":
this._log.trace("Status.service is " + Status.service);
if (Status.service == SYNC_FAILED_PARTIAL) {
this._log.debug("Some engines did not sync correctly.");
this.resetFileLog(Svc.Prefs.get("log.appender.file.logOnError"),
LOG_PREFIX_ERROR);
if (this.shouldReportError()) {
this.dontIgnoreErrors = false;
this.notifyOnNextTick("weave:ui:sync:error");
break;
}
} else {
this.resetFileLog(Svc.Prefs.get("log.appender.file.logOnSuccess"),
LOG_PREFIX_SUCCESS);
}
this.dontIgnoreErrors = false;
this.notifyOnNextTick("weave:ui:sync:finish");
break;
}
},
notifyOnNextTick: function notifyOnNextTick(topic) {
Utils.nextTick(function() {
this._log.trace("Notifying " + topic +
". Status.login is " + Status.login +
". Status.sync is " + Status.sync);
Svc.Obs.notify(topic);
}, this);
},
/**
* Trigger a sync and don't muffle any errors, particularly network errors.
*/
syncAndReportErrors: function syncAndReportErrors() {
this._log.debug("Beginning user-triggered sync.");
this.dontIgnoreErrors = true;
Utils.nextTick(Weave.Service.sync, Weave.Service);
},
/**
* Finds all logs older than maxErrorAge and deletes them without tying up I/O.
*/
cleanupLogs: function cleanupLogs() {
let direntries = FileUtils.getDir("ProfD", ["weave", "logs"]).directoryEntries;
let oldLogs = [];
let index = 0;
let threshold = Date.now() - 1000 * Svc.Prefs.get("log.appender.file.maxErrorAge");
while (direntries.hasMoreElements()) {
let logFile = direntries.getNext().QueryInterface(Ci.nsIFile);
if (logFile.lastModifiedTime < threshold) {
oldLogs.push(logFile);
}
}
// Deletes a file from oldLogs each tick until there are none left.
function deleteFile() {
if (index >= oldLogs.length) {
ErrorHandler._cleaningUpFileLogs = false;
Svc.Obs.notify("weave:service:cleanup-logs");
return;
}
try {
oldLogs[index].remove(false);
} catch (ex) {
ErrorHandler._log._debug("Encountered error trying to clean up old log file '"
+ oldLogs[index].leafName + "':"
+ Utils.exceptionStr(ex));
}
index++;
Utils.nextTick(deleteFile);
}
if (oldLogs.length > 0) {
ErrorHandler._cleaningUpFileLogs = true;
Utils.nextTick(deleteFile);
}
},
/**
* Generate a log file for the sync that just completed
* and refresh the input & output streams.
*
* @param flushToFile
* the log file to be flushed/reset
*
* @param filenamePrefix
* a value of either LOG_PREFIX_SUCCESS or LOG_PREFIX_ERROR
* to be used as the log filename prefix
*/
resetFileLog: function resetFileLog(flushToFile, filenamePrefix) {
let inStream = this._logAppender.getInputStream();
this._logAppender.reset();
if (flushToFile && inStream) {
try {
let filename = filenamePrefix + Date.now() + ".txt";
let file = FileUtils.getFile("ProfD", ["weave", "logs", filename]);
let outStream = FileUtils.openFileOutputStream(file);
NetUtil.asyncCopy(inStream, outStream, function () {
Svc.Obs.notify("weave:service:reset-file-log");
if (filenamePrefix == LOG_PREFIX_ERROR
&& !ErrorHandler._cleaningUpFileLogs) {
Utils.nextTick(ErrorHandler.cleanupLogs, ErrorHandler);
}
});
} catch (ex) {
Svc.Obs.notify("weave:service:reset-file-log");
}
} else {
Svc.Obs.notify("weave:service:reset-file-log");
}
},
/**
* Translates server error codes to meaningful strings.
*
* @param code
* server error code as an integer
*/
errorStr: function errorStr(code) {
switch (code.toString()) {
case "1":
return "illegal-method";
case "2":
return "invalid-captcha";
case "3":
return "invalid-username";
case "4":
return "cannot-overwrite-resource";
case "5":
return "userid-mismatch";
case "6":
return "json-parse-failure";
case "7":
return "invalid-password";
case "8":
return "invalid-record";
case "9":
return "weak-password";
default:
return "generic-server-error";
}
},
shouldReportError: function shouldReportError() {
if (Status.login == MASTER_PASSWORD_LOCKED) {
this._log.trace("shouldReportError: false (master password locked).");
return false;
}
if (this.dontIgnoreErrors) {
return true;
}
let lastSync = Svc.Prefs.get("lastSync");
if (lastSync && ((Date.now() - Date.parse(lastSync)) >
Svc.Prefs.get("errorhandler.networkFailureReportTimeout") * 1000)) {
Status.sync = PROLONGED_SYNC_FAILURE;
this._log.trace("shouldReportError: true (prolonged sync failure).");
return true;
}
return ([Status.login, Status.sync].indexOf(SERVER_MAINTENANCE) == -1 &&
[Status.login, Status.sync].indexOf(LOGIN_FAILED_NETWORK_ERROR) == -1);
},
/**
* Handle HTTP response results or exceptions and set the appropriate
* Status.* bits.
*/
checkServerError: function checkServerError(resp) {
switch (resp.status) {
case 400:
if (resp == RESPONSE_OVER_QUOTA) {
Status.sync = OVER_QUOTA;
}
break;
case 401:
Weave.Service.logout();
Status.login = LOGIN_FAILED_LOGIN_REJECTED;
break;
case 500:
case 502:
case 503:
case 504:
Status.enforceBackoff = true;
if (resp.status == 503 && resp.headers["retry-after"]) {
if (Weave.Service.isLoggedIn) {
Status.sync = SERVER_MAINTENANCE;
} else {
Status.login = SERVER_MAINTENANCE;
}
Svc.Obs.notify("weave:service:backoff:interval",
parseInt(resp.headers["retry-after"], 10));
}
break;
}
switch (resp.result) {
case Cr.NS_ERROR_UNKNOWN_HOST:
case Cr.NS_ERROR_CONNECTION_REFUSED:
case Cr.NS_ERROR_NET_TIMEOUT:
case Cr.NS_ERROR_NET_RESET:
case Cr.NS_ERROR_NET_INTERRUPT:
case Cr.NS_ERROR_PROXY_CONNECTION_REFUSED:
// The constant says it's about login, but in fact it just
// indicates general network error.
if (Weave.Service.isLoggedIn) {
Status.sync = LOGIN_FAILED_NETWORK_ERROR;
} else {
Status.login = LOGIN_FAILED_NETWORK_ERROR;
}
break;
}
},
};
/**
* Send credentials over an active J-PAKE channel.
*
* This object is designed to take over as the JPAKEClient controller,
* presumably replacing one that is UI-based which would either cause
* DOM objects to leak or the JPAKEClient to be GC'ed when the DOM
* context disappears. This object stays alive for the duration of the
* transfer by being strong-ref'ed as an nsIObserver.
*
* Credentials are sent after the first sync has been completed
* (successfully or not.)
*
* Usage:
*
* jpakeclient.controller = new SendCredentialsController(jpakeclient);
*
*/
function SendCredentialsController(jpakeclient) {
this._log = Log4Moz.repository.getLogger("Sync.SendCredentialsController");
this._log.level = Log4Moz.Level[Svc.Prefs.get("log.logger.service.main")];
this._log.trace("Loading.");
this.jpakeclient = jpakeclient;
// Register ourselves as observers the first Sync finishing (either
// successfully or unsuccessfully, we don't care) or for removing
// this device's sync configuration, in case that happens while we
// haven't finished the first sync yet.
Services.obs.addObserver(this, "weave:service:sync:finish", false);
Services.obs.addObserver(this, "weave:service:sync:error", false);
Services.obs.addObserver(this, "weave:service:start-over", false);
}
SendCredentialsController.prototype = {
unload: function unload() {
this._log.trace("Unloading.");
try {
Services.obs.removeObserver(this, "weave:service:sync:finish");
Services.obs.removeObserver(this, "weave:service:sync:error");
Services.obs.removeObserver(this, "weave:service:start-over");
} catch (ex) {
// Ignore.
}
},
observe: function observe(subject, topic, data) {
switch (topic) {
case "weave:service:sync:finish":
case "weave:service:sync:error":
Utils.nextTick(this.sendCredentials, this);
break;
case "weave:service:start-over":
// This will call onAbort which will call unload().
this.jpakeclient.abort();
break;
}
},
sendCredentials: function sendCredentials() {
this._log.trace("Sending credentials.");
let credentials = {account: Weave.Service.account,
password: Weave.Service.password,
synckey: Weave.Service.passphrase,
serverURL: Weave.Service.serverURL};
this.jpakeclient.sendAndComplete(credentials);
},
// JPAKEClient controller API
onComplete: function onComplete() {
this._log.debug("Exchange was completed successfully!");
this.unload();
// Schedule a Sync for soonish to fetch the data uploaded by the
// device with which we just paired.
SyncScheduler.scheduleNextSync(SyncScheduler.activeInterval);
},
onAbort: function onAbort(error) {
// It doesn't really matter why we aborted, but the channel is closed
// for sure, so we won't be able to do anything with it.
this._log.debug("Exchange was aborted with error: " + error);
this.unload();
},
// Irrelevant methods for this controller:
displayPIN: function displayPIN() {},
onPairingStart: function onPairingStart() {},
onPaired: function onPaired() {}
};
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