зеркало из https://github.com/mozilla/gecko-dev.git
346 строки
9.8 KiB
JavaScript
346 строки
9.8 KiB
JavaScript
/* ***** BEGIN LICENSE BLOCK *****
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* Version: MPL 1.1/GPL 2.0/LGPL 2.1
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*
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* The contents of this file are subject to the Mozilla Public License Version
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* 1.1 (the "License"); you may not use this file except in compliance with
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* the License. You may obtain a copy of the License at
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* http://www.mozilla.org/MPL/
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*
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* Software distributed under the License is distributed on an "AS IS" basis,
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* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
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* for the specific language governing rights and limitations under the
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* License.
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*
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* The Original Code is Bookmarks Sync.
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*
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* The Initial Developer of the Original Code is Mozilla.
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* Portions created by the Initial Developer are Copyright (C) 2008
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* the Initial Developer. All Rights Reserved.
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*
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* Contributor(s):
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* Anant Narayanan <anant@kix.in>
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*
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* Alternatively, the contents of this file may be used under the terms of
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* either the GNU General Public License Version 2 or later (the "GPL"), or
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* the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
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* in which case the provisions of the GPL or the LGPL are applicable instead
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* of those above. If you wish to allow use of your version of this file only
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* under the terms of either the GPL or the LGPL, and not to allow others to
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* use your version of this file under the terms of the MPL, indicate your
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* decision by deleting the provisions above and replace them with the notice
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* and other provisions required by the GPL or the LGPL. If you do not delete
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* the provisions above, a recipient may use your version of this file under
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* the terms of any one of the MPL, the GPL or the LGPL.
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*
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* ***** END LICENSE BLOCK ***** */
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const EXPORTED_SYMBOLS = ['FormEngine'];
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const Cc = Components.classes;
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const Ci = Components.interfaces;
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const Cu = Components.utils;
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Cu.import("resource://weave/log4moz.js");
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Cu.import("resource://weave/util.js");
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Cu.import("resource://weave/engines.js");
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Cu.import("resource://weave/syncCores.js");
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Cu.import("resource://weave/stores.js");
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Cu.import("resource://weave/trackers.js");
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/*
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* Generate GUID from a name,value pair.
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* If the concatenated length is less than 40, we just Base64 the JSON.
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* Otherwise, we Base64 the JSON of the name and SHA1 of the value.
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* The first character of the key determines which method we used:
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* '0' for full Base64, '1' for SHA-1'ed val.
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*/
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function _generateFormGUID(nam, val) {
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var key;
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var con = nam + val;
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var jso = Cc["@mozilla.org/dom/json;1"].
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createInstance(Ci.nsIJSON);
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if (con.length <= 40) {
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key = '0' + btoa(jso.encode([nam, val]));
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} else {
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val = Utils.sha1(val);
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key = '1' + btoa(jso.encode([nam, val]));
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}
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return key;
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}
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/*
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* Unwrap a name,value pair from a GUID.
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* Return an array [sha1ed, name, value]
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* sha1ed is a boolean determining if the value is SHA-1'ed or not.
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*/
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function _unwrapFormGUID(guid) {
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var jso = Cc["@mozilla.org/dom/json;1"].
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createInstance(Ci.nsIJSON);
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var ret;
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var dec = atob(guid.slice(1));
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var obj = jso.decode(dec);
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switch (guid[0]) {
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case '0':
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ret = [false, obj[0], obj[1]];
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break;
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case '1':
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ret = [true, obj[0], obj[1]];
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break;
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default:
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this._log.warn("Unexpected GUID header: " + guid[0] + ", aborting!");
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return false;
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}
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return ret;
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}
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function FormEngine(pbeId) {
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this._init(pbeId);
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}
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FormEngine.prototype = {
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get name() { return "forms"; },
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get logName() { return "FormEngine"; },
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get serverPrefix() { return "user-data/forms/"; },
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__core: null,
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get _core() {
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if (!this.__core)
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this.__core = new FormSyncCore();
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return this.__core;
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},
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__store: null,
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get _store() {
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if (!this.__store)
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this.__store = new FormStore();
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return this.__store;
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},
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__tracker: null,
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get _tracker() {
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if (!this.__tracker)
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this.__tracker = new FormsTracker();
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return this.__tracker;
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}
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};
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FormEngine.prototype.__proto__ = new Engine();
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function FormSyncCore() {
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this._init();
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}
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FormSyncCore.prototype = {
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_logName: "FormSync",
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__formDB: null,
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get _formDB() {
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if (!this.__formDB) {
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var file = Cc["@mozilla.org/file/directory_service;1"].
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getService(Ci.nsIProperties).
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get("ProfD", Ci.nsIFile);
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file.append("formhistory.sqlite");
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var stor = Cc["@mozilla.org/storage/service;1"].
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getService(Ci.mozIStorageService);
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this.__formDB = stor.openDatabase(file);
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}
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return this.__formDB;
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},
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_itemExists: function FSC__itemExists(GUID) {
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var found = false;
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var stmnt = this._formDB.createStatement("SELECT * FROM moz_formhistory");
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/* Same performance restrictions as PasswordSyncCore apply here:
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caching required */
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while (stmnt.executeStep()) {
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var nam = stmnt.getUTF8String(1);
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var val = stmnt.getUTF8String(2);
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var key = _generateFormGUID(nam, val);
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if (key == GUID)
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found = true;
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}
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return found;
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},
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_commandLike: function FSC_commandLike(a, b) {
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/* Not required as GUIDs for similar data sets will be the same */
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return false;
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}
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};
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FormSyncCore.prototype.__proto__ = new SyncCore();
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function FormStore() {
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this._init();
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}
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FormStore.prototype = {
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_logName: "FormStore",
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__formDB: null,
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get _formDB() {
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if (!this.__formDB) {
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var file = Cc["@mozilla.org/file/directory_service;1"].
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getService(Ci.nsIProperties).
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get("ProfD", Ci.nsIFile);
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file.append("formhistory.sqlite");
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var stor = Cc["@mozilla.org/storage/service;1"].
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getService(Ci.mozIStorageService);
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this.__formDB = stor.openDatabase(file);
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}
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return this.__formDB;
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},
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__formHistory: null,
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get _formHistory() {
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if (!this.__formHistory)
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this.__formHistory = Cc["@mozilla.org/satchel/form-history;1"].
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getService(Ci.nsIFormHistory2);
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return this.__formHistory;
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},
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_getValueFromSHA1: function FormStore__getValueFromSHA1(name, sha) {
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var query = "SELECT value FROM moz_formhistory WHERE fieldname = '" + name + "'";
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var stmnt = this._formDB.createStatement(query);
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var found = false;
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while (stmnt.executeStep()) {
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var val = stmnt.getUTF8String(0);
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if (Utils.sha1(val) == sha) {
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found = val;
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break;
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}
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}
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return found;
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},
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_createCommand: function FormStore__createCommand(command) {
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this._log.info("FormStore got createCommand: " + command);
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this._formHistory.addEntry(command.data.name, command.data.value);
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},
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_removeCommand: function FormStore__removeCommand(command) {
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this._log.info("FormStore got removeCommand: " + command);
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var data = _unwrapFormGUID(command.GUID);
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if (!data) {
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this._log.warn("Invalid GUID found, ignoring remove request.");
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return;
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}
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var nam = data[1];
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var val = data[2];
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if (data[0]) {
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val = this._getValueFromSHA1(nam, val);
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}
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if (val) {
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this._formHistory.removeEntry(nam, val);
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} else {
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this._log.warn("Form value not found from GUID, ignoring remove request.");
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}
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},
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_editCommand: function FormStore__editCommand(command) {
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this._log.info("FormStore got editCommand: " + command);
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this._log.warn("Form syncs are expected to only be create/remove!");
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},
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wrap: function FormStore_wrap() {
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var items = [];
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var stmnt = this._formDB.createStatement("SELECT * FROM moz_formhistory");
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while (stmnt.executeStep()) {
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var nam = stmnt.getUTF8String(1);
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var val = stmnt.getUTF8String(2);
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var key = _generateFormGUID(nam, val);
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items[key] = { name: nam, value: val };
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}
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return items;
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},
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wipe: function FormStore_wipe() {
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this._formHistory.removeAllEntries();
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},
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resetGUIDs: function FormStore_resetGUIDs() {
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// Not needed.
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}
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};
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FormStore.prototype.__proto__ = new Store();
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function FormsTracker() {
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this._init();
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}
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FormsTracker.prototype = {
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_logName: "FormsTracker",
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__formDB: null,
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get _formDB() {
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if (!this.__formDB) {
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var file = Cc["@mozilla.org/file/directory_service;1"].
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getService(Ci.nsIProperties).
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get("ProfD", Ci.nsIFile);
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file.append("formhistory.sqlite");
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var stor = Cc["@mozilla.org/storage/service;1"].
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getService(Ci.mozIStorageService);
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this.__formDB = stor.openDatabase(file);
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}
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return this.__formDB;
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},
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/* nsIFormSubmitObserver is not available in JS.
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* To calculate scores, we instead just count the changes in
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* the database since the last time we were asked.
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*
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* FIXME!: Buggy, because changes in a row doesn't result in
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* an increment of our score. A possible fix is to do a
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* SELECT for each fieldname and compare those instead of the
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* whole row count.
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*
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* Each change is worth 2 points. At some point, we may
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* want to differentiate between search-history rows and other
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* form items, and assign different scores.
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*/
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_rowCount: 0,
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get score() {
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var stmnt = this._formDB.createStatement("SELECT COUNT(fieldname) FROM moz_formhistory");
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stmnt.executeStep();
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var count = stmnt.getInt32(0);
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stmnt.reset();
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this._score = Math.abs(this._rowCount - count) * 2;
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if (this._score >= 100)
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return 100;
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else
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return this._score;
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},
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resetScore: function FormsTracker_resetScore() {
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var stmnt = this._formDB.createStatement("SELECT COUNT(fieldname) FROM moz_formhistory");
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stmnt.executeStep();
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this._rowCount = stmnt.getInt32(0);
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stmnt.reset();
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this._score = 0;
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},
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_init: function FormsTracker__init() {
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this._log = Log4Moz.Service.getLogger("Service." + this._logName);
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this._score = 0;
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var stmnt = this._formDB.createStatement("SELECT COUNT(fieldname) FROM moz_formhistory");
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stmnt.executeStep();
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this._rowCount = stmnt.getInt32(0);
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stmnt.reset();
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}
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}
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FormsTracker.prototype.__proto__ = new Tracker();
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