diff options
Diffstat (limited to 'b2g/components/B2GAppMigrator.js')
| -rw-r--r-- | b2g/components/B2GAppMigrator.js | 152 |
1 files changed, 152 insertions, 0 deletions
diff --git a/b2g/components/B2GAppMigrator.js b/b2g/components/B2GAppMigrator.js new file mode 100644 index 000000000..65671d151 --- /dev/null +++ b/b2g/components/B2GAppMigrator.js @@ -0,0 +1,152 @@ +/* This Source Code Form is subject to the terms of the Mozilla Public + * License, v. 2.0. If a copy of the MPL was not distributed with this file, + * You can obtain one at http://mozilla.org/MPL/2.0/. */ + +'use strict'; + +function debug(s) { + dump("-*- B2GAppMigrator.js: " + s + "\n"); +} +const DEBUG = false; + +const Cc = Components.classes; +const Ci = Components.interfaces; +const Cu = Components.utils; + +const kMigrationMessageName = "webapps-before-update-merge"; + +const kIDBDirType = "indexedDBPDir"; +const kProfileDirType = "ProfD"; + +Cu.import("resource://gre/modules/XPCOMUtils.jsm"); +Cu.import("resource://gre/modules/Services.jsm"); +Cu.import("resource://gre/modules/FileUtils.jsm"); + +XPCOMUtils.defineLazyServiceGetter(this, "appsService", + "@mozilla.org/AppsService;1", + "nsIAppsService"); + +function B2GAppMigrator() { +} + +B2GAppMigrator.prototype = { + classID: Components.ID('{7211ece0-b458-4635-9afc-f8d7f376ee95}'), + QueryInterface: XPCOMUtils.generateQI([Ci.nsIObserver, + Ci.nsISupportsWeakReference]), + executeBrowserMigration: function() { + if (DEBUG) debug("Executing Browser Migration"); + // The browser db file and directory names are hashed the same way + // everywhere, so it should be the same on all systems. We should + // be able to just hardcode it. + let browserDBDirName = "2959517650brreosw"; + let browserDBFileName = browserDBDirName + ".sqlite"; + + // Storage directories need to be prefixed with the local id of + // the app + let browserLocalAppId = appsService.getAppLocalIdByManifestURL("app://browser.gaiamobile.org/manifest.webapp"); + let browserAppStorageDirName = browserLocalAppId + "+f+app+++browser.gaiamobile.org"; + + // On the phone, the browser db will only be in the old IDB + // directory, since it only existed up until v2.0. On desktop, it + // will exist in the profile directory. + // + // Uses getDir with filename appending to make sure we don't + // create extra directories along the way if they don't already + // exist. + let browserDBFile = FileUtils.getDir(kIDBDirType, + ["storage", + "persistent", + browserAppStorageDirName, + "idb"], false, true); + browserDBFile.append(browserDBFileName); + let browserDBDir = FileUtils.getDir(kIDBDirType, + ["storage", + "persistent", + browserAppStorageDirName, + "idb", + browserDBDirName + ], false, true); + + if (!browserDBFile.exists()) { + if (DEBUG) debug("Browser DB " + browserDBFile.path + " does not exist, trying profile location"); + browserDBFile = FileUtils.getDir(kProfileDirType, + ["storage", + "persistent", + browserAppStorageDirName, + "idb"], false, true); + browserDBFile.append(browserDBFileName); + if (!browserDBFile.exists()) { + if (DEBUG) debug("Browser DB " + browserDBFile.path + " does not exist. Cannot copy browser db."); + return; + } + // If we have confirmed we have a DB file, we should also have a + // directory. + browserDBDir = FileUtils.getDir(kProfileDirType, + ["storage", + "persistent", + browserAppStorageDirName, + "idb", + browserDBDirName + ], false, true); + } + + let systemLocalAppId = appsService.getAppLocalIdByManifestURL("app://system.gaiamobile.org/manifest.webapp"); + let systemAppStorageDirName = systemLocalAppId + "+f+app+++system.gaiamobile.org"; + + // This check futureproofs the system DB storage directory. It + // currently exists outside of the profile but will most likely + // move into the profile at some point. + let systemDBDir = FileUtils.getDir(kIDBDirType, + ["storage", + "persistent", + systemAppStorageDirName, + "idb"], false, true); + + if (!systemDBDir.exists()) { + if (DEBUG) debug("System DB directory " + systemDBDir.path + " does not exist, trying profile location"); + systemDBDir = FileUtils.getDir(kProfileDirType, + ["storage", + "persistent", + systemAppStorageDirName, + "idb"], false, true); + if (!systemDBDir.exists()) { + if (DEBUG) debug("System DB directory " + systemDBDir.path + " does not exist. Cannot copy browser db."); + return; + } + } + + if (DEBUG) { + debug("Browser DB file exists, copying"); + debug("Browser local id: " + browserLocalAppId + ""); + debug("System local id: " + systemLocalAppId + ""); + debug("Browser DB file path: " + browserDBFile.path + ""); + debug("Browser DB dir path: " + browserDBDir.path + ""); + debug("System DB directory path: " + systemDBDir.path + ""); + } + + try { + browserDBFile.copyTo(systemDBDir, browserDBFileName); + } catch (e) { + debug("File copy caused error! " + e.name); + } + try { + browserDBDir.copyTo(systemDBDir, browserDBDirName); + } catch (e) { + debug("Dir copy caused error! " + e.name); + } + if (DEBUG) debug("Browser DB copied successfully"); + }, + + observe: function(subject, topic, data) { + switch (topic) { + case kMigrationMessageName: + this.executeBrowserMigration(); + break; + default: + debug("Unhandled topic: " + topic); + break; + } + } +}; + +this.NSGetFactory = XPCOMUtils.generateNSGetFactory([B2GAppMigrator]); |