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/* -*- indent-tabs-mode: nil; js-indent-level: 2 -*- */
/* 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
const lazy = {};
ChromeUtils.defineESModuleGetters(lazy, {
});
const DIR_UPDATES = "updates";
const FILE_UPDATE_STATUS = "update.status";
const KEY_UPDROOT = "UpdRootD";
const KEY_OLD_UPDROOT = "OldUpdRootD";
// The pref prefix below should have the hash of the install path appended to
// ensure that this is a per-installation pref (i.e. to ensure that migration
// happens for every install rather than once per profile)
const PREF_PREFIX_UPDATE_DIR_MIGRATED = "app.update.migrated.updateDir3.";
const PREF_APP_UPDATE_ALTUPDATEDIRPATH = "app.update.altUpdateDirPath";
function getUpdateBaseDirNoCreate() {
if (Cu.isInAutomation) {
// This allows tests to use an alternate updates directory so they can test
// startup behavior.
const MAGIC_TEST_ROOT_PREFIX = "<test-root>";
const PREF_TEST_ROOT = "mochitest.testRoot";
let alternatePath = Services.prefs.getCharPref(
PREF_APP_UPDATE_ALTUPDATEDIRPATH,
null
);
if (alternatePath && alternatePath.startsWith(MAGIC_TEST_ROOT_PREFIX)) {
let testRoot = Services.prefs.getCharPref(PREF_TEST_ROOT);
let relativePath = alternatePath.substring(MAGIC_TEST_ROOT_PREFIX.length);
if (AppConstants.platform == "win") {
relativePath = relativePath.replace(/\//g, "\\");
}
alternatePath = testRoot + relativePath;
let updateDir = Cc["@mozilla.org/file/local;1"].createInstance(
Ci.nsIFile
);
updateDir.initWithPath(alternatePath);
LOG(
"getUpdateBaseDirNoCreate returning test directory, path: " +
updateDir.path
);
return updateDir;
}
}
return FileUtils.getDir(KEY_UPDROOT, []);
}
export function UpdateServiceStub() {
LOG("UpdateServiceStub - Begin.");
let updateDir = getUpdateBaseDirNoCreate();
let prefUpdateDirMigrated =
PREF_PREFIX_UPDATE_DIR_MIGRATED + updateDir.leafName;
let statusFile = updateDir;
statusFile.append(DIR_UPDATES);
statusFile.append("0");
statusFile.append(FILE_UPDATE_STATUS);
updateDir = null; // We don't need updateDir anymore, plus now its nsIFile
// contains the status file's path
// We may need to migrate update data
if (
AppConstants.platform == "win" &&
!Services.prefs.getBoolPref(prefUpdateDirMigrated, false)
) {
Services.prefs.setBoolPref(prefUpdateDirMigrated, true);
try {
migrateUpdateDirectory();
} catch (ex) {
// For the most part, migrateUpdateDirectory() catches its own errors.
// But there are technically things that could happen that might not be
// caught, like nsIFile.parent or nsIFile.append could unexpectedly fail.
// So we will catch any errors here, just in case.
LOG(
`UpdateServiceStub:UpdateServiceStub Failed to migrate update ` +
`directory. Exception: ${ex}`
);
}
}
// If the update.status file exists then initiate post update processing.
if (statusFile.exists()) {
let aus = Cc["@mozilla.org/updates/update-service;1"]
.getService(Ci.nsIApplicationUpdateService)
.QueryInterface(Ci.nsIObserver);
aus.observe(null, "post-update-processing", "");
}
}
UpdateServiceStub.prototype = {
observe() {},
classID: Components.ID("{e43b0010-04ba-4da6-b523-1f92580bc150}"),
QueryInterface: ChromeUtils.generateQI(["nsIObserver"]),
};
/**
* This function should be called when there are files in the old update
* directory that may need to be migrated to the new update directory.
*/
function migrateUpdateDirectory() {
LOG("UpdateServiceStub:migrateUpdateDirectory Performing migration");
let sourceRootDir = FileUtils.getDir(KEY_OLD_UPDROOT, []);
let destRootDir = FileUtils.getDir(KEY_UPDROOT, []);
let hash = destRootDir.leafName;
if (!sourceRootDir.exists()) {
// Nothing to migrate.
return;
}
// List of files to migrate. Each is specified as a list of path components.
const toMigrate = [
["updates.xml"],
["active-update.xml"],
["update-config.json"],
["updates", "last-update.log"],
["updates", "backup-update.log"],
["updates", "downloading", FILE_UPDATE_STATUS],
["updates", "downloading", "update.mar"],
["updates", "0", FILE_UPDATE_STATUS],
["updates", "0", "update.mar"],
["updates", "0", "update.version"],
["updates", "0", "update.log"],
["backgroundupdate", "datareporting", "glean", "db", "data.safe.bin"],
];
// Before we copy anything, double check that a different profile hasn't
// already performed migration. If we don't have the necessary permissions to
// remove the pre-migration files, we don't want to copy any old files and
// potentially make the current update state inconsistent.
for (let pathComponents of toMigrate) {
// Assemble the destination nsIFile.
let destFile = destRootDir.clone();
for (let pathComponent of pathComponents) {
destFile.append(pathComponent);
}
if (destFile.exists()) {
LOG(
`UpdateServiceStub:migrateUpdateDirectory Aborting migration because ` +
`"${destFile.path}" already exists.`
);
return;
}
}
// Before we migrate everything in toMigrate, there are a few things that
// need special handling.
let sourceRootParent = sourceRootDir.parent.parent;
let destRootParent = destRootDir.parent.parent;
let profileCountFile = sourceRootParent.clone();
profileCountFile.append(`profile_count_${hash}.json`);
migrateFile(profileCountFile, destRootParent);
const updatePingPrefix = `uninstall_ping_${hash}_`;
const updatePingSuffix = ".json";
try {
for (let file of sourceRootParent.directoryEntries) {
if (
file.leafName.startsWith(updatePingPrefix) &&
file.leafName.endsWith(updatePingSuffix)
) {
migrateFile(file, destRootParent);
}
}
} catch (ex) {
// migrateFile should catch its own errors, but it is possible that
// sourceRootParent.directoryEntries could throw.
LOG(
`UpdateServiceStub:migrateUpdateDirectory Failed to migrate uninstall ` +
`ping. Exception: ${ex}`
);
}
// Migrate "backgroundupdate.moz_log" and child process logs like
// "backgroundupdate.child-1.moz_log".
const backgroundLogPrefix = `backgroundupdate`;
const backgroundLogSuffix = ".moz_log";
try {
for (let file of sourceRootDir.directoryEntries) {
if (
file.leafName.startsWith(backgroundLogPrefix) &&
file.leafName.endsWith(backgroundLogSuffix)
) {
migrateFile(file, destRootDir);
}
}
} catch (ex) {
LOG(
`UpdateServiceStub:migrateUpdateDirectory Failed to migrate background ` +
`log file. Exception: ${ex}`
);
}
const pendingPingRelDir =
"backgroundupdate\\datareporting\\glean\\pending_pings";
let pendingPingSourceDir = sourceRootDir.clone();
pendingPingSourceDir.appendRelativePath(pendingPingRelDir);
let pendingPingDestDir = destRootDir.clone();
pendingPingDestDir.appendRelativePath(pendingPingRelDir);
// Pending ping filenames are UUIDs.
const pendingPingFilenameRegex =
/^[0-9a-f]{8}-[0-9a-f]{4}-[0-9a-f]{4}-[0-9a-f]{4}-[0-9a-f]{12}$/;
if (pendingPingSourceDir.exists()) {
try {
for (let file of pendingPingSourceDir.directoryEntries) {
if (pendingPingFilenameRegex.test(file.leafName)) {
migrateFile(file, pendingPingDestDir);
}
}
} catch (ex) {
// migrateFile should catch its own errors, but it is possible that
// pendingPingSourceDir.directoryEntries could throw.
LOG(
`UpdateServiceStub:migrateUpdateDirectory Failed to migrate ` +
`pending pings. Exception: ${ex}`
);
}
}
// Migrate everything in toMigrate.
for (let pathComponents of toMigrate) {
let filename = pathComponents.pop();
// Assemble the source and destination nsIFile's.
let sourceFile = sourceRootDir.clone();
let destDir = destRootDir.clone();
for (let pathComponent of pathComponents) {
sourceFile.append(pathComponent);
destDir.append(pathComponent);
}
sourceFile.append(filename);
migrateFile(sourceFile, destDir);
}
// There is no reason to keep this file, and it often hangs around and could
// interfere with cleanup.
let updateLockFile = sourceRootParent.clone();
updateLockFile.append(`UpdateLock-${hash}`);
try {
updateLockFile.remove(false);
} catch (ex) {}
// We want to recursively remove empty directories out of the sourceRootDir.
// And if that was the only remaining update directory in sourceRootParent,
// we want to remove that too. But we don't want to recurse into other update
// directories in sourceRootParent.
//
// Potentially removes "C:\ProgramData\Mozilla\updates\<hash>" and
// subdirectories.
cleanupDir(sourceRootDir, true);
// Potentially removes "C:\ProgramData\Mozilla\updates"
cleanupDir(sourceRootDir.parent, false);
// Potentially removes "C:\ProgramData\Mozilla"
cleanupDir(sourceRootParent, false);
}
/**
* Attempts to move the source file to the destination directory. If the file
* cannot be moved, we attempt to copy it and remove the original. All errors
* are logged, but no exceptions are thrown. Both arguments must be of type
* nsIFile and are expected to be regular files.
*
* Non-existent files are silently ignored.
*
* The reason that we are migrating is to deal with problematic inherited
* permissions. But, luckily, neither nsIFile.moveTo nor nsIFile.copyTo preserve
* inherited permissions.
*/
function migrateFile(sourceFile, destDir) {
if (!sourceFile.exists()) {
return;
}
if (sourceFile.isDirectory()) {
LOG(
`UpdateServiceStub:migrateFile Aborting attempt to migrate ` +
`"${sourceFile.path}" because it is a directory.`
);
return;
}
// Create destination directory.
try {
// Pass an arbitrary value for permissions. Windows doesn't use octal
// permissions, so that value doesn't really do anything.
destDir.create(Ci.nsIFile.DIRECTORY_TYPE, 0);
} catch (ex) {
if (ex.result != Cr.NS_ERROR_FILE_ALREADY_EXISTS) {
LOG(
`UpdateServiceStub:migrateFile Unable to create destination ` +
`directory "${destDir.path}": ${ex}`
);
}
}
try {
sourceFile.moveTo(destDir, null);
return;
} catch (ex) {}
try {
sourceFile.copyTo(destDir, null);
} catch (ex) {
LOG(
`UpdateServiceStub:migrateFile Failed to migrate file from ` +
`"${sourceFile.path}" to "${destDir.path}". Exception: ${ex}`
);
return;
}
try {
sourceFile.remove(false);
} catch (ex) {
LOG(
`UpdateServiceStub:migrateFile Successfully migrated file from ` +
`"${sourceFile.path}" to "${destDir.path}", but was unable to remove ` +
`the original. Exception: ${ex}`
);
}
}
/**
* If recurse is true, recurses through the directory's contents. Any empty
* directories are removed. Directories with remaining files are left behind.
*
* If recurse if false, we delete the directory passed as long as it is empty.
*
* All errors are silenced and not thrown.
*
* Returns true if the directory passed in was removed. Otherwise false.
*/
function cleanupDir(dir, recurse) {
let directoryEmpty = true;
try {
for (let file of dir.directoryEntries) {
if (!recurse) {
// If we aren't recursing, bail out after we find a single file. The
// directory isn't empty so we can't delete it, and we aren't going to
// clean out and remove any other directories.
return false;
}
if (file.isDirectory()) {
if (!cleanupDir(file, recurse)) {
directoryEmpty = false;
}
} else {
directoryEmpty = false;
}
}
} catch (ex) {
// If any of our nsIFile calls fail, just err on the side of caution and
// don't delete anything.
return false;
}
if (directoryEmpty) {
try {
dir.remove(false);
return true;
} catch (ex) {}
}
return false;
}
/**
* Logs a string to the error console.
* @param string
* The string to write to the error console.
*/
function LOG(string) {
lazy.UpdateLog.logPrefixedString("AUS:STB", string);
}