296 lines
10 KiB
JavaScript
296 lines
10 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 Cc = Components.classes;
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const Ci = Components.interfaces;
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const Cu = Components.utils;
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const Cr = Components.results;
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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/AppConstants.jsm");
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const XRE_OS_UPDATE_APPLY_TO_DIR = "OSUpdApplyToD"
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const UPDATE_ARCHIVE_DIR = "UpdArchD"
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const LOCAL_DIR = "/data/local";
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const UPDATES_DIR = "updates/0";
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const FOTA_DIR = "updates/fota";
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const COREAPPSDIR_PREF = "b2g.coreappsdir"
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XPCOMUtils.defineLazyServiceGetter(Services, "env",
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"@mozilla.org/process/environment;1",
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"nsIEnvironment");
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XPCOMUtils.defineLazyServiceGetter(Services, "um",
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"@mozilla.org/updates/update-manager;1",
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"nsIUpdateManager");
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XPCOMUtils.defineLazyServiceGetter(Services, "volumeService",
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"@mozilla.org/telephony/volume-service;1",
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"nsIVolumeService");
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XPCOMUtils.defineLazyServiceGetter(this, "cpmm",
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"@mozilla.org/childprocessmessagemanager;1",
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"nsISyncMessageSender");
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XPCOMUtils.defineLazyGetter(this, "gExtStorage", function dp_gExtStorage() {
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return Services.env.get("EXTERNAL_STORAGE");
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});
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// This exists to mark the affected code for bug 828858.
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const gUseSDCard = true;
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const VERBOSE = 1;
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var log =
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VERBOSE ?
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function log_dump(msg) { dump("DirectoryProvider: " + msg + "\n"); } :
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function log_noop(msg) { };
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function DirectoryProvider() {
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}
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DirectoryProvider.prototype = {
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classID: Components.ID("{9181eb7c-6f87-11e1-90b1-4f59d80dd2e5}"),
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QueryInterface: XPCOMUtils.generateQI([Ci.nsIDirectoryServiceProvider]),
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_xpcom_factory: XPCOMUtils.generateSingletonFactory(DirectoryProvider),
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_profD: null,
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getFile: function(prop, persistent) {
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if (AppConstants.platform === "gonk") {
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return this.getFileOnGonk(prop, persistent);
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}
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return this.getFileNotGonk(prop, persistent);
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},
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getFileOnGonk: function(prop, persistent) {
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let localProps = ["cachePDir", "webappsDir", "PrefD", "indexedDBPDir",
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"permissionDBPDir", "UpdRootD"];
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if (localProps.indexOf(prop) != -1) {
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let file = Cc["@mozilla.org/file/local;1"]
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.createInstance(Ci.nsILocalFile)
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file.initWithPath(LOCAL_DIR);
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persistent.value = true;
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return file;
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}
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if (prop == "ProfD") {
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let dir = Cc["@mozilla.org/file/local;1"]
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.createInstance(Ci.nsILocalFile);
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dir.initWithPath(LOCAL_DIR+"/tests/profile");
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if (dir.exists()) {
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persistent.value = true;
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return dir;
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}
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}
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if (prop == "coreAppsDir") {
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let file = Cc["@mozilla.org/file/local;1"].createInstance(Ci.nsIFile)
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file.initWithPath("/system/b2g");
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persistent.value = true;
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return file;
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}
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if (prop == UPDATE_ARCHIVE_DIR) {
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// getUpdateDir will set persistent to false since it may toggle between
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// /data/local/ and /mnt/sdcard based on free space and/or availability
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// of the sdcard.
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// before download, check if free space is 2.1 times of update.mar
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return this.getUpdateDir(persistent, UPDATES_DIR, 2.1);
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}
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if (prop == XRE_OS_UPDATE_APPLY_TO_DIR) {
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// getUpdateDir will set persistent to false since it may toggle between
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// /data/local/ and /mnt/sdcard based on free space and/or availability
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// of the sdcard.
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// before apply, check if free space is 1.1 times of update.mar
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return this.getUpdateDir(persistent, FOTA_DIR, 1.1);
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}
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return null;
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},
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getFileNotGonk: function(prop, persistent) {
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// In desktop builds, coreAppsDir is the same as the profile
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// directory unless otherwise specified. We just need to get the
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// path from the parent, and it is then used to build
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// jar:remoteopenfile:// uris.
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if (prop == "coreAppsDir") {
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let coreAppsDirPref;
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try {
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coreAppsDirPref = Services.prefs.getCharPref(COREAPPSDIR_PREF);
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} catch (e) {
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// coreAppsDirPref may not exist if we're on an older version
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// of gaia, so just fail silently.
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}
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let appsDir;
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// If pref doesn't exist or isn't set, default to old value
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if (!coreAppsDirPref || coreAppsDirPref == "") {
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appsDir = Services.dirsvc.get("ProfD", Ci.nsIFile);
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appsDir.append("webapps");
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} else {
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appsDir = Cc["@mozilla.org/file/local;1"].createInstance(Ci.nsIFile)
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appsDir.initWithPath(coreAppsDirPref);
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}
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persistent.value = true;
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return appsDir;
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} else if (prop == "ProfD") {
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let inParent = Cc["@mozilla.org/xre/app-info;1"]
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.getService(Ci.nsIXULRuntime)
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.processType == Ci.nsIXULRuntime.PROCESS_TYPE_DEFAULT;
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if (inParent) {
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// Just bail out to use the default from toolkit.
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return null;
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}
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if (!this._profD) {
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this._profD = cpmm.sendSyncMessage("getProfD", {})[0];
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}
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let file = Cc["@mozilla.org/file/local;1"].createInstance(Ci.nsIFile);
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file.initWithPath(this._profD);
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persistent.value = true;
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return file;
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}
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return null;
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},
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// The VolumeService only exists on the device, and not on desktop
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volumeHasFreeSpace: function dp_volumeHasFreeSpace(volumePath, requiredSpace) {
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if (!volumePath) {
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return false;
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}
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if (!Services.volumeService) {
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return false;
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}
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let volume = Services.volumeService.createOrGetVolumeByPath(volumePath);
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if (!volume || volume.state !== Ci.nsIVolume.STATE_MOUNTED) {
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return false;
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}
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let stat = volume.getStats();
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if (!stat) {
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return false;
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}
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return requiredSpace <= stat.freeBytes;
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},
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findUpdateDirWithFreeSpace: function dp_findUpdateDirWithFreeSpace(requiredSpace, subdir) {
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if (!Services.volumeService) {
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return this.createUpdatesDir(LOCAL_DIR, subdir);
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}
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let activeUpdate = Services.um.activeUpdate;
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if (gUseSDCard) {
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if (this.volumeHasFreeSpace(gExtStorage, requiredSpace)) {
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let extUpdateDir = this.createUpdatesDir(gExtStorage, subdir);
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if (extUpdateDir !== null) {
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return extUpdateDir;
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}
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log("Warning: " + gExtStorage + " has enough free space for update " +
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activeUpdate.name + ", but is not writable");
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}
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}
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if (this.volumeHasFreeSpace(LOCAL_DIR, requiredSpace)) {
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let localUpdateDir = this.createUpdatesDir(LOCAL_DIR, subdir);
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if (localUpdateDir !== null) {
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return localUpdateDir;
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}
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log("Warning: " + LOCAL_DIR + " has enough free space for update " +
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activeUpdate.name + ", but is not writable");
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}
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return null;
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},
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getUpdateDir: function dp_getUpdateDir(persistent, subdir, multiple) {
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let defaultUpdateDir = this.getDefaultUpdateDir();
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persistent.value = false;
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let activeUpdate = Services.um.activeUpdate;
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if (!activeUpdate) {
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log("Warning: No active update found, using default update dir: " +
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defaultUpdateDir);
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return defaultUpdateDir;
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}
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let selectedPatch = activeUpdate.selectedPatch;
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if (!selectedPatch) {
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log("Warning: No selected patch, using default update dir: " +
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defaultUpdateDir);
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return defaultUpdateDir;
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}
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let requiredSpace = selectedPatch.size * multiple;
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let updateDir = this.findUpdateDirWithFreeSpace(requiredSpace, subdir);
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if (updateDir) {
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return updateDir;
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}
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// If we've gotten this far, there isn't enough free space to download the patch
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// on either external storage or /data/local. All we can do is report the
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// error and let upstream code handle it more gracefully.
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log("Error: No volume found with " + requiredSpace + " bytes for downloading"+
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" update " + activeUpdate.name);
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activeUpdate.errorCode = Cr.NS_ERROR_FILE_TOO_BIG;
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return null;
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},
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createUpdatesDir: function dp_createUpdatesDir(root, subdir) {
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let dir = Cc["@mozilla.org/file/local;1"]
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.createInstance(Ci.nsILocalFile);
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dir.initWithPath(root);
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if (!dir.isWritable()) {
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log("Error: " + dir.path + " isn't writable");
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return null;
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}
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dir.appendRelativePath(subdir);
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if (dir.exists()) {
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if (dir.isDirectory() && dir.isWritable()) {
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return dir;
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}
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// subdir is either a file or isn't writable. In either case we
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// can't use it.
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log("Error: " + dir.path + " is a file or isn't writable");
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return null;
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}
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// subdir doesn't exist, and the parent is writable, so try to
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// create it. This can fail if a file named updates exists.
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try {
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dir.create(Ci.nsIFile.DIRECTORY_TYPE, parseInt('0770', 8));
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} catch (e) {
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// The create failed for some reason. We can't use it.
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log("Error: " + dir.path + " unable to create directory");
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return null;
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}
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return dir;
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},
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getDefaultUpdateDir: function dp_getDefaultUpdateDir() {
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let path = gExtStorage;
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if (!path) {
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path = LOCAL_DIR;
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}
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if (Services.volumeService) {
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let extVolume = Services.volumeService.createOrGetVolumeByPath(path);
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if (!extVolume) {
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path = LOCAL_DIR;
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}
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}
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let dir = Cc["@mozilla.org/file/local;1"]
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.createInstance(Ci.nsILocalFile)
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dir.initWithPath(path);
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if (!dir.exists() && path != LOCAL_DIR) {
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// Fallback to LOCAL_DIR if we didn't fallback earlier
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dir.initWithPath(LOCAL_DIR);
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if (!dir.exists()) {
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throw Cr.NS_ERROR_FILE_NOT_FOUND;
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}
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}
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dir.appendRelativePath("updates");
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return dir;
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}
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};
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this.NSGetFactory = XPCOMUtils.generateNSGetFactory([DirectoryProvider]);
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