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Diffstat (limited to 'browser/components/migration/FirefoxProfileMigrator.sys.mjs')
| -rw-r--r-- | browser/components/migration/FirefoxProfileMigrator.sys.mjs | 362 |
1 files changed, 362 insertions, 0 deletions
diff --git a/browser/components/migration/FirefoxProfileMigrator.sys.mjs b/browser/components/migration/FirefoxProfileMigrator.sys.mjs new file mode 100644 index 0000000000..71e8214849 --- /dev/null +++ b/browser/components/migration/FirefoxProfileMigrator.sys.mjs @@ -0,0 +1,362 @@ +/* -*- indent-tabs-mode: nil; js-indent-level: 2 -*- */ +/* vim: set sw=2 ts=2 sts=2 et */ +/* 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/. */ + +/* + * Migrates from a Firefox profile in a lossy manner in order to clean up a + * user's profile. Data is only migrated where the benefits outweigh the + * potential problems caused by importing undesired/invalid configurations + * from the source profile. + */ + +import { MigrationUtils } from "resource:///modules/MigrationUtils.sys.mjs"; + +import { MigratorBase } from "resource:///modules/MigratorBase.sys.mjs"; + +const lazy = {}; + +ChromeUtils.defineESModuleGetters(lazy, { + FileUtils: "resource://gre/modules/FileUtils.sys.mjs", + PlacesBackups: "resource://gre/modules/PlacesBackups.sys.mjs", + ProfileAge: "resource://gre/modules/ProfileAge.sys.mjs", + SessionMigration: "resource:///modules/sessionstore/SessionMigration.sys.mjs", +}); + +/** + * Firefox profile migrator. Currently, this class only does "pave over" + * migrations, where various parts of an old profile overwrite a new + * profile. This is distinct from other migrators which attempt to import + * old profile data into the existing profile. + * + * This migrator is what powers the "Profile Refresh" mechanism. + */ +export class FirefoxProfileMigrator extends MigratorBase { + static get key() { + return "firefox"; + } + + _getAllProfiles() { + let allProfiles = new Map(); + let profileService = Cc[ + "@mozilla.org/toolkit/profile-service;1" + ].getService(Ci.nsIToolkitProfileService); + for (let profile of profileService.profiles) { + let rootDir = profile.rootDir; + + if ( + rootDir.exists() && + rootDir.isReadable() && + !rootDir.equals(MigrationUtils.profileStartup.directory) + ) { + allProfiles.set(profile.name, rootDir); + } + } + return allProfiles; + } + + getSourceProfiles() { + let sorter = (a, b) => { + return a.id.toLocaleLowerCase().localeCompare(b.id.toLocaleLowerCase()); + }; + + return [...this._getAllProfiles().keys()] + .map(x => ({ id: x, name: x })) + .sort(sorter); + } + + _getFileObject(dir, fileName) { + let file = dir.clone(); + file.append(fileName); + + // File resources are monolithic. We don't make partial copies since + // they are not expected to work alone. Return null to avoid trying to + // copy non-existing files. + return file.exists() ? file : null; + } + + getResources(aProfile) { + let sourceProfileDir = aProfile + ? this._getAllProfiles().get(aProfile.id) + : Cc["@mozilla.org/toolkit/profile-service;1"].getService( + Ci.nsIToolkitProfileService + ).defaultProfile.rootDir; + if ( + !sourceProfileDir || + !sourceProfileDir.exists() || + !sourceProfileDir.isReadable() + ) { + return null; + } + + // Being a startup-only migrator, we can rely on + // MigrationUtils.profileStartup being set. + let currentProfileDir = MigrationUtils.profileStartup.directory; + + // Surely data cannot be imported from the current profile. + if (sourceProfileDir.equals(currentProfileDir)) { + return null; + } + + return this._getResourcesInternal(sourceProfileDir, currentProfileDir); + } + + getLastUsedDate() { + // We always pretend we're really old, so that we don't mess + // up the determination of which browser is the most 'recent' + // to import from. + return Promise.resolve(new Date(0)); + } + + _getResourcesInternal(sourceProfileDir, currentProfileDir) { + let getFileResource = (aMigrationType, aFileNames) => { + let files = []; + for (let fileName of aFileNames) { + let file = this._getFileObject(sourceProfileDir, fileName); + if (file) { + files.push(file); + } + } + if (!files.length) { + return null; + } + return { + type: aMigrationType, + migrate(aCallback) { + for (let file of files) { + file.copyTo(currentProfileDir, ""); + } + aCallback(true); + }, + }; + }; + + function savePrefs() { + // If we've used the pref service to write prefs for the new profile, it's too + // early in startup for the service to have a profile directory, so we have to + // manually tell it where to save the prefs file. + let newPrefsFile = currentProfileDir.clone(); + newPrefsFile.append("prefs.js"); + Services.prefs.savePrefFile(newPrefsFile); + } + + let types = MigrationUtils.resourceTypes; + let places = getFileResource(types.HISTORY, [ + "places.sqlite", + "places.sqlite-wal", + ]); + let favicons = getFileResource(types.HISTORY, [ + "favicons.sqlite", + "favicons.sqlite-wal", + ]); + let cookies = getFileResource(types.COOKIES, [ + "cookies.sqlite", + "cookies.sqlite-wal", + ]); + let passwords = getFileResource(types.PASSWORDS, [ + "signons.sqlite", + "logins.json", + "key3.db", + "key4.db", + ]); + let formData = getFileResource(types.FORMDATA, [ + "formhistory.sqlite", + "autofill-profiles.json", + ]); + let bookmarksBackups = getFileResource(types.OTHERDATA, [ + lazy.PlacesBackups.profileRelativeFolderPath, + ]); + let dictionary = getFileResource(types.OTHERDATA, ["persdict.dat"]); + + let session; + if (Services.env.get("MOZ_RESET_PROFILE_MIGRATE_SESSION")) { + // We only want to restore the previous firefox session if the profile refresh was + // triggered by user. The MOZ_RESET_PROFILE_MIGRATE_SESSION would be set when a user-triggered + // profile refresh happened in nsAppRunner.cpp. Hence, we detect the MOZ_RESET_PROFILE_MIGRATE_SESSION + // to see if session data migration is required. + Services.env.set("MOZ_RESET_PROFILE_MIGRATE_SESSION", ""); + let sessionCheckpoints = this._getFileObject( + sourceProfileDir, + "sessionCheckpoints.json" + ); + let sessionFile = this._getFileObject( + sourceProfileDir, + "sessionstore.jsonlz4" + ); + if (sessionFile) { + session = { + type: types.SESSION, + migrate(aCallback) { + sessionCheckpoints.copyTo( + currentProfileDir, + "sessionCheckpoints.json" + ); + let newSessionFile = currentProfileDir.clone(); + newSessionFile.append("sessionstore.jsonlz4"); + let migrationPromise = lazy.SessionMigration.migrate( + sessionFile.path, + newSessionFile.path + ); + migrationPromise.then( + function() { + let buildID = Services.appinfo.platformBuildID; + let mstone = Services.appinfo.platformVersion; + // Force the browser to one-off resume the session that we give it: + Services.prefs.setBoolPref( + "browser.sessionstore.resume_session_once", + true + ); + // Reset the homepage_override prefs so that the browser doesn't override our + // session with the "what's new" page: + Services.prefs.setCharPref( + "browser.startup.homepage_override.mstone", + mstone + ); + Services.prefs.setCharPref( + "browser.startup.homepage_override.buildID", + buildID + ); + savePrefs(); + aCallback(true); + }, + function() { + aCallback(false); + } + ); + }, + }; + } + } + + // Sync/FxA related data + let sync = { + name: "sync", // name is used only by tests. + type: types.OTHERDATA, + migrate: async aCallback => { + // Try and parse a signedInUser.json file from the source directory and + // if we can, copy it to the new profile and set sync's username pref + // (which acts as a de-facto flag to indicate if sync is configured) + try { + let oldPath = PathUtils.join( + sourceProfileDir.path, + "signedInUser.json" + ); + let exists = await IOUtils.exists(oldPath); + if (exists) { + let data = await IOUtils.readJSON(oldPath); + if (data && data.accountData && data.accountData.email) { + let username = data.accountData.email; + // copy the file itself. + await IOUtils.copy( + oldPath, + PathUtils.join(currentProfileDir.path, "signedInUser.json") + ); + // Now we need to know whether Sync is actually configured for this + // user. The only way we know is by looking at the prefs file from + // the old profile. We avoid trying to do a full parse of the prefs + // file and even avoid parsing the single string value we care + // about. + let prefsPath = PathUtils.join(sourceProfileDir.path, "prefs.js"); + if (await IOUtils.exists(oldPath)) { + let rawPrefs = await IOUtils.readUTF8(prefsPath, { + encoding: "utf-8", + }); + if (/^user_pref\("services\.sync\.username"/m.test(rawPrefs)) { + // sync's configured in the source profile - ensure it is in the + // new profile too. + // Write it to prefs.js and flush the file. + Services.prefs.setStringPref( + "services.sync.username", + username + ); + savePrefs(); + } + } + } + } + } catch (ex) { + aCallback(false); + return; + } + aCallback(true); + }, + }; + + // Telemetry related migrations. + let times = { + name: "times", // name is used only by tests. + type: types.OTHERDATA, + migrate: aCallback => { + let file = this._getFileObject(sourceProfileDir, "times.json"); + if (file) { + file.copyTo(currentProfileDir, ""); + } + // And record the fact a migration (ie, a reset) happened. + let recordMigration = async () => { + try { + let profileTimes = await lazy.ProfileAge(currentProfileDir.path); + await profileTimes.recordProfileReset(); + aCallback(true); + } catch (e) { + aCallback(false); + } + }; + + recordMigration(); + }, + }; + let telemetry = { + name: "telemetry", // name is used only by tests... + type: types.OTHERDATA, + migrate: aCallback => { + let createSubDir = name => { + let dir = currentProfileDir.clone(); + dir.append(name); + dir.create(Ci.nsIFile.DIRECTORY_TYPE, lazy.FileUtils.PERMS_DIRECTORY); + return dir; + }; + + // If the 'datareporting' directory exists we migrate files from it. + let dataReportingDir = this._getFileObject( + sourceProfileDir, + "datareporting" + ); + if (dataReportingDir && dataReportingDir.isDirectory()) { + // Copy only specific files. + let toCopy = ["state.json", "session-state.json"]; + + let dest = createSubDir("datareporting"); + let enumerator = dataReportingDir.directoryEntries; + while (enumerator.hasMoreElements()) { + let file = enumerator.nextFile; + if (file.isDirectory() || !toCopy.includes(file.leafName)) { + continue; + } + file.copyTo(dest, ""); + } + } + + aCallback(true); + }, + }; + + return [ + places, + cookies, + passwords, + formData, + dictionary, + bookmarksBackups, + session, + sync, + times, + telemetry, + favicons, + ].filter(r => r); + } + + get startupOnlyMigrator() { + return true; + } +} |