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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 Bookmarks Sync.
*
* The Initial Developer of the Original Code is Mozilla.
* Portions created by the Initial Developer are Copyright (C) 2007
* the Initial Developer. All Rights Reserved.
*
* Contributor(s):
* Dan Mills <thunder@mozilla.com>
* Myk Melez <myk@mozilla.org>
*
* 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 = ['Weave'];
const Cc = Components.classes;
const Ci = Components.interfaces;
const Cr = Components.results;
const Cu = Components.utils;
// The following constants determine when Weave will automatically sync data.
// An interval of one minute, initial threshold of 100, and step of 5 means
// that we'll try to sync each engine 21 times, once per minute, at
// consecutively lower thresholds (from 100 down to 5 in steps of 5 and then
// one more time with the threshold set to the minimum 1) before resetting
// the engine's threshold to the initial value and repeating the cycle
// until at some point the engine's score exceeds the threshold, at which point
// we'll sync it, reset its threshold to the initial value, rinse, and repeat.
// How long we wait between sync checks.
const SCHEDULED_SYNC_INTERVAL = 60 * 1000 * 5; // five minutes
// INITIAL_THRESHOLD represents the value an engine's score has to exceed
// in order for us to sync it the first time we start up (and the first time
// we do a sync check after having synced the engine or reset the threshold).
const INITIAL_THRESHOLD = 75;
// THRESHOLD_DECREMENT_STEP is the amount by which we decrement an engine's
// threshold each time we do a sync check and don't sync that engine.
const THRESHOLD_DECREMENT_STEP = 25;
Cu.import("resource://gre/modules/XPCOMUtils.jsm");
Cu.import("resource://weave/log4moz.js");
Cu.import("resource://weave/constants.js");
Cu.import("resource://weave/util.js");
Cu.import("resource://weave/wrap.js");
Cu.import("resource://weave/faultTolerance.js");
Cu.import("resource://weave/auth.js");
Cu.import("resource://weave/resource.js");
Cu.import("resource://weave/base_records/wbo.js");
Cu.import("resource://weave/base_records/keys.js");
Cu.import("resource://weave/engines.js");
Cu.import("resource://weave/oauth.js");
Cu.import("resource://weave/identity.js");
Cu.import("resource://weave/async.js");
Cu.import("resource://weave/engines/clientData.js");
Function.prototype.async = Async.sugar;
// for export
let Weave = {};
Cu.import("resource://weave/constants.js", Weave);
Cu.import("resource://weave/util.js", Weave);
Cu.import("resource://weave/async.js", Weave);
Cu.import("resource://weave/faultTolerance.js", Weave);
Cu.import("resource://weave/auth.js", Weave);
Cu.import("resource://weave/resource.js", Weave);
Cu.import("resource://weave/base_records/keys.js", Weave);
Cu.import("resource://weave/notifications.js", Weave);
Cu.import("resource://weave/identity.js", Weave);
Cu.import("resource://weave/stores.js", Weave);
Cu.import("resource://weave/engines.js", Weave);
Cu.import("resource://weave/oauth.js", Weave);
Cu.import("resource://weave/service.js", Weave); // ??
Cu.import("resource://weave/engines/clientData.js", Weave);
Utils.lazy(Weave, 'Service', WeaveSvc);
/*
* Service singleton
* Main entry point into Weave's sync framework
*/
function WeaveSvc() {}
WeaveSvc.prototype = {
_notify: Wrap.notify,
_localLock: Wrap.localLock,
_catchAll: Wrap.catchAll,
_osPrefix: "weave:service:",
_isQuitting: false,
_loggedIn: false,
_syncInProgress: false,
_keyGenEnabled: true,
__os: null,
get _os() {
if (!this.__os)
this.__os = Cc["@mozilla.org/observer-service;1"]
.getService(Ci.nsIObserverService);
return this.__os;
},
__dirSvc: null,
get _dirSvc() {
if (!this.__dirSvc)
this.__dirSvc = Cc["@mozilla.org/file/directory_service;1"].
getService(Ci.nsIProperties);
return this.__dirSvc;
},
__json: null,
get _json() {
if (!this.__json)
this.__json = Cc["@mozilla.org/dom/json;1"].
createInstance(Ci.nsIJSON);
return this.__json;
},
// object for caching public and private keys
_keyPair: {},
// Timer object for automagically syncing
_scheduleTimer: null,
get username() {
return Svc.Prefs.get("username");
},
set username(value) {
if (value)
Svc.Prefs.set("username", value);
else
Svc.Prefs.reset("username");
// fixme - need to loop over all Identity objects - needs some rethinking...
ID.get('WeaveID').username = value;
ID.get('WeaveCryptoID').username = value;
// FIXME: need to also call this whenever the username pref changes
this._genKeyURLs();
},
get password() { return ID.get('WeaveID').password; },
set password(value) { ID.get('WeaveID').password = value; },
get passphrase() { return ID.get('WeaveCryptoID').password; },
set passphrase(value) { ID.get('WeaveCryptoID').password = value; },
// chrome-provided callbacks for when the service needs a password/passphrase
set onGetPassword(value) {
ID.get('WeaveID').onGetPassword = value;
},
set onGetPassphrase(value) {
ID.get('WeaveCryptoID').onGetPassword = value;
},
get baseURL() {
let url = Svc.Prefs.get("serverURL");
if (!url)
throw "No server URL set";
if (url[url.length-1] != '/')
url += '/';
url += "0.3/";
return url;
},
set baseURL(value) {
Svc.Prefs.set("serverURL", value);
},
get clusterURL() {
let url = Svc.Prefs.get("clusterURL");
if (!url)
return null;
if (url[url.length-1] != '/')
url += '/';
url += "0.3/user/";
return url;
},
set clusterURL(value) {
Svc.Prefs.set("clusterURL", value);
this._genKeyURLs();
},
get userPath() { return ID.get('WeaveID').username; },
get isLoggedIn() { return this._loggedIn; },
get isQuitting() { return this._isQuitting; },
set isQuitting(value) { this._isQuitting = value; },
get cancelRequested() { return Engines.cancelRequested; },
set cancelRequested(value) { Engines.cancelRequested = value; },
get keyGenEnabled() { return this._keyGenEnabled; },
set keyGenEnabled(value) { this._keyGenEnabled = value; },
get enabled() { return Svc.Prefs.get("enabled"); },
set enabled(value) { Svc.Prefs.set("enabled", value); },
get schedule() {
if (!this.enabled)
return 0; // manual/off
return Svc.Prefs.get("schedule");
},
get locked() { return this._locked; },
lock: function Svc_lock() {
if (this._locked)
return false;
this._locked = true;
return true;
},
unlock: function Svc_unlock() {
this._locked = false;
},
_setSchedule: function Weave__setSchedule(schedule) {
switch (this.schedule) {
case 0:
this._disableSchedule();
break;
case 1:
this._enableSchedule();
break;
default:
this._log.warn("Invalid Weave scheduler setting: " + schedule);
break;
}
},
_enableSchedule: function WeaveSvc__enableSchedule() {
if (this._scheduleTimer) {
this._scheduleTimer.cancel();
this._scheduleTimer = null;
}
this._scheduleTimer = Cc["@mozilla.org/timer;1"].
createInstance(Ci.nsITimer);
let listener = new Utils.EventListener(Utils.bind2(this, this._onSchedule));
this._scheduleTimer.initWithCallback(listener, SCHEDULED_SYNC_INTERVAL,
this._scheduleTimer.TYPE_REPEATING_SLACK);
this._log.config("Weave scheduler enabled");
},
_disableSchedule: function WeaveSvc__disableSchedule() {
if (this._scheduleTimer) {
this._scheduleTimer.cancel();
this._scheduleTimer = null;
}
this._log.config("Weave scheduler disabled");
},
_onSchedule: function WeaveSvc__onSchedule() {
if (this.enabled) {
if (this.locked) {
this._log.trace("Skipping scheduled sync; local operation in progress");
} else {
this._log.info("Running scheduled sync");
this._catchAll(
this._notify("sync", "",
this._localLock(this._sync))).async(this);
}
}
},
_genKeyURLs: function WeaveSvc__genKeyURLs() {
let url = this.clusterURL + this.username;
PubKeys.defaultKeyUri = url + "/keys/pubkey";
PrivKeys.defaultKeyUri = url + "/keys/privkey";
},
_checkCrypto: function WeaveSvc__checkCrypto() {
let ok = false;
try {
let iv = Svc.Crypto.generateRandomIV();
if (iv.length == 24)
ok = true;
} catch (e) {
this._log.debug("Crypto check failed: " + e);
}
return ok;
},
onWindowOpened: function Weave__onWindowOpened() {
},
// one-time initialization like setting up observers and the like
// xxx we might need to split some of this out into something we can call
// again when username/server/etc changes
_onStartup: function WeaveSvc__onStartup() {
let self = yield;
this._initLogs();
this._log.info("Weave " + WEAVE_VERSION + " initializing");
let ua = Cc["@mozilla.org/network/protocol;1?name=http"].
getService(Ci.nsIHttpProtocolHandler).userAgent;
this._log.info(ua);
if (!this._checkCrypto()) {
this.enabled = false;
this._log.error("Could not load the Weave crypto component. Disabling " +
"Weave, since it will not work correctly.");
}
Utils.prefs.addObserver("", this, false);
this._os.addObserver(this, "quit-application", true);
FaultTolerance.Service; // initialize FT service
if (!this.enabled)
this._log.info("Weave Sync disabled");
// Create Weave identities (for logging in, and for encryption)
ID.set('WeaveID', new Identity('Mozilla Services Password', this.username));
Auth.defaultAuthenticator = new BasicAuthenticator(ID.get('WeaveID'));
ID.set('WeaveCryptoID',
new Identity('Mozilla Services Encryption Passphrase', this.username));
this._genKeyURLs();
if (Svc.Prefs.get("autoconnect") && this.username) {
try {
if (yield this.login(self.cb))
yield this.sync(self.cb);
} catch (e) {}
}
self.done();
},
onStartup: function WeaveSvc_onStartup(callback) {
this._onStartup.async(this, callback);
},
_initLogs: function WeaveSvc__initLogs() {
this._log = Log4Moz.repository.getLogger("Service.Main");
this._log.level =
Log4Moz.Level[Svc.Prefs.get("log.logger.service.main")];
let formatter = new Log4Moz.BasicFormatter();
let root = Log4Moz.repository.rootLogger;
root.level = Log4Moz.Level[Svc.Prefs.get("log.rootLogger")];
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 brief = this._dirSvc.get("ProfD", Ci.nsIFile);
brief.QueryInterface(Ci.nsILocalFile);
brief.append("weave");
brief.append("logs");
brief.append("brief-log.txt");
if (!brief.exists())
brief.create(brief.NORMAL_FILE_TYPE, PERMS_FILE);
let verbose = brief.parent.clone();
verbose.append("verbose-log.txt");
if (!verbose.exists())
verbose.create(verbose.NORMAL_FILE_TYPE, PERMS_FILE);
this._briefApp = new Log4Moz.RotatingFileAppender(brief, formatter);
this._briefApp.level = Log4Moz.Level[Svc.Prefs.get("log.appender.briefLog")];
root.addAppender(this._briefApp);
this._debugApp = new Log4Moz.RotatingFileAppender(verbose, formatter);
this._debugApp.level = Log4Moz.Level[Svc.Prefs.get("log.appender.debugLog")];
root.addAppender(this._debugApp);
},
clearLogs: function WeaveSvc_clearLogs() {
this._briefApp.clear();
this._debugApp.clear();
},
QueryInterface: XPCOMUtils.generateQI([Ci.nsIObserver,
Ci.nsISupportsWeakReference]),
// nsIObserver
observe: function WeaveSvc__observe(subject, topic, data) {
switch (topic) {
case "nsPref:changed":
switch (data) {
case "enabled": // this works because this.schedule is 0 when disabled
case "schedule":
this._setSchedule(this.schedule);
break;
}
break;
case "quit-application":
this._onQuitApplication();
break;
}
},
_onQuitApplication: function WeaveSvc__onQuitApplication() {
},
// These are global (for all engines)
// gets cluster from central LDAP server and sets this.clusterURL
findCluster: function WeaveSvc_findCluster(onComplete, username) {
let fn = function WeaveSvc__findCluster() {
let self = yield;
let ret = false;
this._log.debug("Finding cluster for user " + username);
let res = new Resource(this.baseURL + "api/register/chknode/" + username);
try {
yield res.get(self.cb);
} catch (e) { /* we check status below */ }
if (res.lastChannel.responseStatus == 404) {
this._log.debug("Using serverURL as data cluster (multi-cluster support disabled)");
this.clusterURL = Svc.Prefs.get("serverURL");
ret = true;
} else if (res.lastChannel.responseStatus == 200) {
this.clusterURL = 'https://' + res.data + '/';
ret = true;
}
self.done(ret);
};
fn.async(this, onComplete);
},
verifyLogin: function WeaveSvc_verifyLogin(onComplete, username, password, isLogin) {
let user = username, pass = password;
let fn = function WeaveSvc__verifyLogin() {
let self = yield;
this._log.debug("Verifying login for user " + user);
let cluster = this.clusterURL;
yield this.findCluster(self.cb, username);
let res = new Resource(this.clusterURL + user);
yield res.get(self.cb);
if (!isLogin) // restore cluster so verifyLogin has no impact
this.clusterURL = cluster;
//Svc.Json.decode(res.data); // throws if not json
self.done(true);
};
this._catchAll(this._notify("verify-login", "", fn)).async(this, onComplete);
},
_verifyPassphrase: function WeaveSvc__verifyPassphrase(username, password,
passphrase) {
let self = yield;
this._log.debug("Verifying passphrase");
this.username = username;
ID.get('WeaveID').setTempPassword(password);
let id = new Identity('Passphrase Verification', username);
id.setTempPassword(passphrase);
let pubkey = yield PubKeys.getDefaultKey(self.cb);
let privkey = yield PrivKeys.get(self.cb, pubkey.PrivKeyUri);
// fixme: decrypt something here
},
verifyPassphrase: function WeaveSvc_verifyPassphrase(onComplete, username,
password, passphrase) {
this._catchAll(
this._localLock(
this._notify("verify-passphrase", "", this._verifyPassphrase,
username, password, passphrase))).async(this, onComplete);
},
login: function WeaveSvc_login(onComplete, username, password, passphrase) {
let user = username, pass = password, passp = passphrase;
let fn = function WeaveSvc__login() {
let self = yield;
this._loggedIn = false;
try {
if (typeof(user) != 'undefined')
this.username = user;
if (typeof(pass) != 'undefined')
ID.get('WeaveID').setTempPassword(pass);
if (typeof(passp) != 'undefined')
ID.get('WeaveCryptoID').setTempPassword(passp);
if (!this.username)
throw "No username set, login failed";
if (!this.password)
throw "No password given or found in password manager";
this._log.debug("Logging in user " + this.username);
if (!(yield this.verifyLogin(self.cb, this.username, this.password, true)))
throw "Login failed";
this._loggedIn = true;
this._setSchedule(this.schedule);
self.done(true);
} catch (e) {
this._disableSchedule();
throw e;
}
};
this._catchAll(
this._localLock(
this._notify("login", "", fn))).async(this, onComplete);
},
logout: function WeaveSvc_logout() {
this._log.info("Logging out");
this._disableSchedule();
this._loggedIn = false;
this._keyPair = {};
ID.get('WeaveID').setTempPassword(null); // clear cached password
ID.get('WeaveCryptoID').setTempPassword(null); // and passphrase
this._os.notifyObservers(null, "weave:service:logout:success", "");
},
serverWipe: function WeaveSvc_serverWipe(onComplete) {
let cb = function WeaveSvc_serverWipeCb() {
let self = yield;
this._log.error("Server wipe not supported");
this.logout();
};
this._catchAll(
this._notify("server-wipe", "", this._localLock(cb))).async(this, onComplete);
},
// stuff we need to to after login, before we can really do
// anything (e.g. key setup)
_remoteSetup: function WeaveSvc__remoteSetup() {
let self = yield;
let ret = false; // false to abort sync
this._log.debug("Fetching global metadata record");
let meta = yield Records.import(self.cb, this.clusterURL +
this.username + "/meta/global");
if (meta) {
// FIXME: version is a string, and we don't have any version
// parsing function so we can implement greater-than. So we
// just check for != which is wrong!
if (meta.payload.storageVersion != MIN_SERVER_STORAGE_VERSION) {
this._log.debug("Last upload client version too old, wiping server data" +
"to ensure consistency");
yield this._wipeServer.async(this, self.cb);
this._log.debug("Uploading new metadata record");
meta.payload.storageVersion = WEAVE_VERSION;
let res = new Resource(meta.uri);
yield res.put(self.cb, meta.serialize());
}
} else {
if (Records.lastResource.lastChannel.responseStatus == 404) {
this._log.debug("Metadata record not found, deleting all server " +
"data to ensure consistency");
yield this._wipeServer.async(this, self.cb);
this._log.debug("Uploading new metadata record");
meta = new WBORecord(this.clusterURL + this.username + "/meta/global");
meta.payload.storageVersion = WEAVE_VERSION;
let res = new Resource(meta.uri);
yield res.put(self.cb, meta.serialize());
} else {
this._log.debug("Unknown error while downloading metadata record. " +
"Aborting sync.");
self.done(false);
return;
}
}
// FIXME: too easy to generate a keypair. we should be absolutely certain
// that the keys are not there (404) and that it's not some other
// transient network problem instead
let needKeys = true;
let pubkey = yield PubKeys.getDefaultKey(self.cb);
if (pubkey) {
// make sure we have a matching privkey
let privkey = yield PrivKeys.get(self.cb, pubkey.privateKeyUri);
if (privkey) {
needKeys = false;
ret = true;
}
}
if (needKeys) {
if (PubKeys.lastResource.lastChannel.responseStatus != 404 &&
PrivKeys.lastResource.lastChannel.responseStatus != 404) {
this._log.warn("Couldn't download keys from server, aborting sync");
this._log.debug("PubKey HTTP response status: " +
PubKeys.lastResource.lastChannel.responseStatus);
this._log.debug("PrivKey HTTP response status: " +
PrivKeys.lastResource.lastChannel.responseStatus);
self.done(false);
return;
}
if (!this._keyGenEnabled) {
this._log.warn("Couldn't download keys from server, and key generation" +
"is disabled. Aborting sync");
self.done(false);
return;
}
let pass = yield ID.get('WeaveCryptoID').getPassword(self.cb);
if (pass) {
let keys = PubKeys.createKeypair(pass, PubKeys.defaultKeyUri,
PrivKeys.defaultKeyUri);
try {
yield PubKeys.uploadKeypair(self.cb, keys);
ret = true;
} catch (e) {
this._log.error("Could not upload keys: " + Utils.exceptionStr(e));
// FIXME no lastRequest anymore
//this._log.error(keys.pubkey.lastRequest.responseText);
}
} else {
this._log.warn("Could not get encryption passphrase");
}
}
self.done(ret);
},
// These are per-engine
_sync: function WeaveSvc__sync() {
let self = yield;
if (!this.enabled)
return;
if (!this._loggedIn) {
this._disableSchedule();
throw "aborting sync, not logged in";
}
if (!(yield this._remoteSetup.async(this, self.cb))) {
throw "aborting sync, remote setup failed";
}
this._log.debug("Refreshing client list");
yield Clients.sync(self.cb);
try {
let engines = Engines.getAll();
for each (let engine in engines) {
if (!engine.enabled)
continue;
if (!(yield this._syncEngine.async(this, self.cb, engine))) {
this._log.info("Aborting sync");
break;
}
}
if (this._syncError)
this._log.warn("Some engines did not sync correctly");
else
this._log.info("Sync completed successfully");
} finally {
this.cancelRequested = false;
this._syncError = false;
}
},
sync: function WeaveSvc_sync(onComplete) {
this._catchAll(
this._notify("sync", "",
this._localLock(this._sync))).async(this, onComplete);
},
// The values that engine scores must meet or exceed before we sync them
// as needed. These are engine-specific, as different kinds of data change
// at different rates, so we store them in a hash indexed by engine name.
_syncThresholds: {},
_syncAsNeeded: function WeaveSvc__syncAsNeeded() {
let self = yield;
if (!this.enabled)
return;
try {
if (!this._loggedIn) {
this._disableSchedule();
throw "aborting sync, not logged in";
}
let engines = Engines.getAll();
for each (let engine in engines) {
if (!engine.enabled)
continue;
if (!(engine.name in this._syncThresholds))
this._syncThresholds[engine.name] = INITIAL_THRESHOLD;
let score = engine.score;
if (score >= this._syncThresholds[engine.name]) {
this._log.debug(engine.name + " score " + score +
" reaches threshold " +
this._syncThresholds[engine.name] + "; syncing");
if (!(yield this._syncEngine.async(this, self.cb, engine))) {
this._log.info("Aborting sync");
break;
}
// Reset the engine's threshold to the initial value.
// Note: we do this after syncing the engine so that we'll try again
// next time around if syncing fails for some reason. The upside
// of this approach is that we'll sync again as soon as possible;
// but the downside is that if the error is caused by the server being
// overloaded, we'll contribute to the problem by trying to sync
// repeatedly at the maximum rate.
this._syncThresholds[engine.name] = INITIAL_THRESHOLD;
}
else {
this._log.debug(engine.name + " score " + score +
" does not reach threshold " +
this._syncThresholds[engine.name] + "; not syncing");
// Decrement the threshold by the standard amount, and if this puts it
// at or below zero, then set it to 1, the lowest possible value, where
// it'll stay until there's something to sync (whereupon we'll sync it,
// reset the threshold to the initial value, and start over again).
this._syncThresholds[engine.name] -= THRESHOLD_DECREMENT_STEP;
if (this._syncThresholds[engine.name] <= 0)
this._syncThresholds[engine.name] = 1;
}
}
if (this._syncError)
this._log.warn("Some engines did not sync correctly");
else
this._log.info("Sync completed successfully");
} finally {
this._cancelRequested = false;
this._syncError = false;
}
},
// returns true if sync should proceed
// false / no return value means sync should be aborted
_syncEngine: function WeaveSvc__syncEngine(engine) {
let self = yield;
try {
yield engine.sync(self.cb);
if (!this.cancelRequested)
self.done(true);
}
catch(e) {
this._syncError = true;
if (FaultTolerance.Service.onException(e))
self.done(true);
}
},
_wipeServer: function WeaveSvc__wipeServer() {
let self = yield;
// tmp, delete all known collections
for each (let coll in ["keys", "crypto", "clients",
"bookmarks", "history", "tabs"]) {
let res = new Resource(this.clusterURL + this.username + "/" + coll + "/");
try {
yield res.delete(self.cb);
} catch (e) {
this._log.debug("Exception on delete: " + Utils.exceptionStr(e));
}
}
},
wipeServer: function WeaveSvc_wipeServer(onComplete) {
this._catchAll(
this._notify("wipe-server", "",
this._localLock(this._wipeServer))).async(this, onComplete);
}
};
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