mirror of
https://github.com/mozilla/gecko-dev.git
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473 lines
13 KiB
JavaScript
473 lines
13 KiB
JavaScript
/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this file,
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* You can obtain one at http://mozilla.org/MPL/2.0/. */
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const Cu = Components.utils;
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const Cc = Components.classes;
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const Ci = Components.interfaces;
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let EXPORTED_SYMBOLS = ["DOMApplicationRegistry", "DOMApplicationManifest"];
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Cu.import("resource://gre/modules/XPCOMUtils.jsm");
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Cu.import("resource://gre/modules/Services.jsm");
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Cu.import("resource://gre/modules/FileUtils.jsm");
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XPCOMUtils.defineLazyGetter(this, "NetUtil", function() {
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Cu.import("resource://gre/modules/NetUtil.jsm");
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return NetUtil;
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});
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XPCOMUtils.defineLazyGetter(this, "ppmm", function() {
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return Cc["@mozilla.org/parentprocessmessagemanager;1"].getService(Ci.nsIFrameMessageManager);
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});
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#ifdef MOZ_WIDGET_GONK
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const DIRECTORY_NAME = "webappsDir";
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#else
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const DIRECTORY_NAME = "ProfD";
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#endif
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let DOMApplicationRegistry = {
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appsFile: null,
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webapps: { },
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init: function() {
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this.messages = ["Webapps:Install", "Webapps:Uninstall",
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"Webapps:GetSelf", "Webapps:GetInstalled",
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"Webapps:Launch", "Webapps:GetAll"];
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this.messages.forEach((function(msgName) {
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ppmm.addMessageListener(msgName, this);
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}).bind(this));
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Services.obs.addObserver(this, "xpcom-shutdown", false);
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let appsDir = FileUtils.getDir(DIRECTORY_NAME, ["webapps"], true, true);
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this.appsFile = FileUtils.getFile(DIRECTORY_NAME, ["webapps", "webapps.json"], true);
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if (!this.appsFile.exists())
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return;
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this._loadJSONAsync(this.appsFile, (function(aData) { this.webapps = aData; }).bind(this));
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try {
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let hosts = Services.prefs.getCharPref("dom.mozApps.whitelist")
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hosts.split(",").forEach(function(aHost) {
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Services.perms.add(Services.io.newURI(aHost, null, null), "webapps-manage",
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Ci.nsIPermissionManager.ALLOW_ACTION);
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});
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} catch(e) { }
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},
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observe: function(aSubject, aTopic, aData) {
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if (aTopic == "xpcom-shutdown") {
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this.messages.forEach((function(msgName) {
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ppmm.removeMessageListener(msgName, this);
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}).bind(this));
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Services.obs.removeObserver(this, "xpcom-shutdown");
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ppmm = null;
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}
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},
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_loadJSONAsync: function(aFile, aCallback) {
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try {
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let channel = NetUtil.newChannel(aFile);
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channel.contentType = "application/json";
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NetUtil.asyncFetch(channel, function(aStream, aResult) {
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if (!Components.isSuccessCode(aResult)) {
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Cu.reportError("DOMApplicationRegistry: Could not read from json file " + aFile.path);
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if (aCallback)
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aCallback(null);
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return;
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}
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// Read json file into a string
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let data = null;
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try {
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data = JSON.parse(NetUtil.readInputStreamToString(aStream, aStream.available()) || "");
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aStream.close();
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if (aCallback)
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aCallback(data);
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} catch (ex) {
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Cu.reportError("DOMApplicationRegistry: Could not parse JSON: " + ex);
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if (aCallback)
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aCallback(null);
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}
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});
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} catch (ex) {
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Cu.reportError("DOMApplicationRegistry: Could not read from " + aFile.path + " : " + ex);
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if (aCallback)
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aCallback(null);
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}
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},
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receiveMessage: function(aMessage) {
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let msg = aMessage.json;
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switch (aMessage.name) {
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case "Webapps:Install":
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// always ask for UI to install
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Services.obs.notifyObservers(this, "webapps-ask-install", JSON.stringify(msg));
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break;
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case "Webapps:GetSelf":
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this.getSelf(msg);
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break;
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case "Webapps:Uninstall":
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this.uninstall(msg);
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break;
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case "Webapps:Launch":
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Services.obs.notifyObservers(this, "webapps-launch", JSON.stringify(msg));
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break;
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case "Webapps:GetInstalled":
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this.getInstalled(msg);
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break;
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case "Webapps:GetAll":
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if (msg.hasPrivileges)
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this.getAll(msg);
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else
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ppmm.sendAsyncMessage("Webapps:GetAll:Return:KO", msg);
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break;
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}
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},
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_writeFile: function ss_writeFile(aFile, aData, aCallbak) {
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// Initialize the file output stream.
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let ostream = FileUtils.openSafeFileOutputStream(aFile);
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// Obtain a converter to convert our data to a UTF-8 encoded input stream.
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let converter = Cc["@mozilla.org/intl/scriptableunicodeconverter"].createInstance(Ci.nsIScriptableUnicodeConverter);
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converter.charset = "UTF-8";
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// Asynchronously copy the data to the file.
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let istream = converter.convertToInputStream(aData);
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NetUtil.asyncCopy(istream, ostream, function(rc) {
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if (aCallbak)
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aCallbak();
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});
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},
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// clones a app object, without the manifest
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_cloneAppObject: function(aApp) {
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let clone = {
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installOrigin: aApp.installOrigin,
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origin: aApp.origin,
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receipts: aApp.receipts,
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installTime: aApp.installTime,
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manifestURL: aApp.manifestURL
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};
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return clone;
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},
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denyInstall: function(aData) {
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ppmm.sendAsyncMessage("Webapps:Install:Return:KO", aData);
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},
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confirmInstall: function(aData, aFromSync) {
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let app = aData.app;
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let id = app.syncId || this._appId(app.origin);
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// install an application again is considered as an update
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if (id) {
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let dir = FileUtils.getDir(DIRECTORY_NAME, ["webapps", id], true, true);
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try {
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dir.remove(true);
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} catch(e) {
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}
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}
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else {
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let uuidGenerator = Cc["@mozilla.org/uuid-generator;1"].getService(Ci.nsIUUIDGenerator);
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id = uuidGenerator.generateUUID().toString();
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}
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let dir = FileUtils.getDir(DIRECTORY_NAME, ["webapps", id], true, true);
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let manFile = dir.clone();
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manFile.append("manifest.json");
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this._writeFile(manFile, JSON.stringify(app.manifest));
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this.webapps[id] = this._cloneAppObject(app);
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delete this.webapps[id].manifest;
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this.webapps[id].installTime = (new Date()).getTime()
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if (!aFromSync)
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this._saveApps((function() {
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ppmm.sendAsyncMessage("Webapps:Install:Return:OK", aData);
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Services.obs.notifyObservers(this, "webapps-sync-install", id);
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}).bind(this));
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},
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_appId: function(aURI) {
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for (let id in this.webapps) {
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if (this.webapps[id].origin == aURI)
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return id;
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}
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return null;
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},
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_saveApps: function(aCallback) {
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this._writeFile(this.appsFile, JSON.stringify(this.webapps), function() {
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if (aCallback)
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aCallback();
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});
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},
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/**
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* Asynchronously reads a list of manifests
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*/
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_readManifests: function(aData, aFinalCallback, aIndex) {
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if (!aData.length) {
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aFinalCallback(aData);
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return;
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}
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let index = aIndex || 0;
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let id = aData[index].id;
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let file = FileUtils.getFile(DIRECTORY_NAME, ["webapps", id, "manifest.json"], true);
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this._loadJSONAsync(file, (function(aJSON) {
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aData[index].manifest = aJSON;
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if (index == aData.length - 1)
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aFinalCallback(aData);
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else
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this._readManifests(aData, aFinalCallback, index + 1);
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}).bind(this));
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},
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uninstall: function(aData) {
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let found = false;
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for (let id in this.webapps) {
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let app = this.webapps[id];
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if (app.origin == aData.origin) {
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found = true;
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delete this.webapps[id];
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let dir = FileUtils.getDir(DIRECTORY_NAME, ["webapps", id], true, true);
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try {
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dir.remove(true);
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} catch (e) {
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}
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this._saveApps((function() {
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ppmm.sendAsyncMessage("Webapps:Uninstall:Return:OK", aData);
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Services.obs.notifyObservers(this, "webapps-sync-uninstall", id);
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}).bind(this));
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}
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}
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if (!found)
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ppmm.sendAsyncMessage("Webapps:Uninstall:Return:KO", aData);
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},
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getSelf: function(aData) {
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aData.apps = [];
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let tmp = [];
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let id = this._appId(aData.origin);
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if (id) {
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let app = this._cloneAppObject(this.webapps[id]);
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aData.apps.push(app);
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tmp.push({ id: id });
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}
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this._readManifests(tmp, (function(aResult) {
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for (let i = 0; i < aResult.length; i++)
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aData.apps[i].manifest = aResult[i].manifest;
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ppmm.sendAsyncMessage("Webapps:GetSelf:Return:OK", aData);
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}).bind(this));
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},
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getInstalled: function(aData) {
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aData.apps = [];
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let tmp = [];
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let id = this._appId(aData.origin);
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for (id in this.webapps) {
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if (this.webapps[id].installOrigin == aData.origin) {
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aData.apps.push(this._cloneAppObject(this.webapps[id]));
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tmp.push({ id: id });
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}
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}
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this._readManifests(tmp, (function(aResult) {
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for (let i = 0; i < aResult.length; i++)
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aData.apps[i].manifest = aResult[i].manifest;
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ppmm.sendAsyncMessage("Webapps:GetInstalled:Return:OK", aData);
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}).bind(this));
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},
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getAll: function(aData) {
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aData.apps = [];
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let tmp = [];
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for (id in this.webapps) {
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let app = this._cloneAppObject(this.webapps[id]);
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aData.apps.push(app);
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tmp.push({ id: id });
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}
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this._readManifests(tmp, (function(aResult) {
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for (let i = 0; i < aResult.length; i++)
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aData.apps[i].manifest = aResult[i].manifest;
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ppmm.sendAsyncMessage("Webapps:GetAll:Return:OK", aData);
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}).bind(this));
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},
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getManifestFor: function(aOrigin, aCallback) {
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if (!aCallback)
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return;
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let id = this._appId(aOrigin);
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if (!id) {
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aCallback(null);
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return;
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}
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this._readManifests([{ id: id }], function(aResult) {
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aCallback(aResult[0].manifest);
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});
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},
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/** added to support the sync engine */
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getAppById: function(aId) {
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if (!this.webapps[aId])
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return null;
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let app = this._cloneAppObject(this.webapps[aId]);
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return app;
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},
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itemExists: function(aId) {
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return !!this.webapps[aId];
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},
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updateApps: function(aRecords, aCallback) {
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for (let i = 0; i < aRecords.length; i++) {
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let record = aRecords[i];
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if (record.deleted) {
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if (!this.webapps[record.id])
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continue;
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let origin = this.webapps[record.id].origin;
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delete this.webapps[record.id];
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let dir = FileUtils.getDir(DIRECTORY_NAME, ["webapps", record.id], true, true);
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try {
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dir.remove(true);
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} catch (e) {
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}
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ppmm.sendAsyncMessage("Webapps:Uninstall:Return:OK", { origin: origin });
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} else {
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if (!!this.webapps[record.id]) {
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this.webapps[record.id] = record.value;
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delete this.webapps[record.id].manifest;
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}
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else {
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let data = { app: record.value };
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this.confirmInstall(data, true);
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ppmm.sendAsyncMessage("Webapps:Install:Return:OK", data);
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}
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}
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}
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this._saveApps(aCallback);
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},
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/*
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* May be removed once sync API change
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*/
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getAllIDs: function() {
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let apps = {};
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for (let id in this.webapps) {
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// only sync http and https apps
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if (this.webapps[id].origin.indexOf("http") == 0)
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apps[id] = true;
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}
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return apps;
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},
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wipe: function(aCallback) {
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let ids = this.getAllIDs();
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for (let id in ids) {
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delete this.webapps[id];
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let dir = FileUtils.getDir(DIRECTORY_NAME, ["webapps", id], true, true);
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try {
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dir.remove(true);
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} catch (e) {
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}
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}
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this._saveApps(aCallback);
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}
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};
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/**
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* Helper object to access manifest information with locale support
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*/
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DOMApplicationManifest = function(aManifest, aOrigin) {
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this._origin = Services.io.newURI(aOrigin, null, null);
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this._manifest = aManifest;
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let chrome = Cc["@mozilla.org/chrome/chrome-registry;1"].getService(Ci.nsIXULChromeRegistry)
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.QueryInterface(Ci.nsIToolkitChromeRegistry);
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let locale = chrome.getSelectedLocale("browser").toLowerCase();
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this._localeRoot = this._manifest;
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if (this._manifest.locales && this._manifest.locales[locale]) {
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this._localeRoot = this._manifest.locales[locale];
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}
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else if (this._manifest.locales) {
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// try with the language part of the locale ("en" for en-GB) only
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let lang = locale.split('-')[0];
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if (lang != locale && this._manifest.locales[lang])
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this._localeRoot = this._manifest.locales[lang];
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}
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}
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DOMApplicationManifest.prototype = {
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_localeProp: function(aProp) {
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if (this._localeRoot[aProp] != undefined)
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return this._localeRoot[aProp];
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return this._manifest[aProp];
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},
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get name() {
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return this._localeProp("name");
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},
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get description() {
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return this._localeProp("description");
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},
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get version() {
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return this._localeProp("version");
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},
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get launch_path() {
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return this._localeProp("launch_path");
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},
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get developer() {
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return this._localeProp("developer");
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},
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get icons() {
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return this._localeProp("icons");
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},
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iconURLForSize: function(aSize) {
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let icons = this._localeProp("icons");
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if (!icons)
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return null;
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let dist = 100000;
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let icon = null;
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for (let size in icons) {
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let iSize = parseInt(size);
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if (Math.abs(iSize - aSize) < dist) {
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icon = this._origin.resolve(icons[size]);
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dist = Math.abs(iSize - aSize);
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}
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}
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return icon;
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},
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fullLaunchPath: function() {
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let launchPath = this._localeProp("launch_path");
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return this._origin.resolve(launchPath ? launchPath : "");
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}
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}
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DOMApplicationRegistry.init();
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