gecko/toolkit/components/passwordmgr/storage-mozStorage.js

1393 lines
45 KiB
JavaScript

/* -*- tab-width: 4; indent-tabs-mode: nil; js-indent-level: 4 -*- */
/* vim: set sw=4 ts=4 et lcs=trail\:.,tab\:>~ : */
/* 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/. */
const Cc = Components.classes;
const Ci = Components.interfaces;
const Cr = Components.results;
const DB_VERSION = 5; // The database schema version
Components.utils.import("resource://gre/modules/XPCOMUtils.jsm");
Components.utils.import("resource://gre/modules/Services.jsm");
Components.utils.import("resource://gre/modules/Promise.jsm");
XPCOMUtils.defineLazyModuleGetter(this, "LoginHelper",
"resource://gre/modules/LoginHelper.jsm");
/**
* Object that manages a database transaction properly so consumers don't have
* to worry about it throwing.
*
* @param aDatabase
* The mozIStorageConnection to start a transaction on.
*/
function Transaction(aDatabase) {
this._db = aDatabase;
this._hasTransaction = false;
try {
this._db.beginTransaction();
this._hasTransaction = true;
}
catch(e) { /* om nom nom exceptions */ }
}
Transaction.prototype = {
commit : function() {
if (this._hasTransaction)
this._db.commitTransaction();
},
rollback : function() {
if (this._hasTransaction)
this._db.rollbackTransaction();
},
};
function LoginManagerStorage_mozStorage() { };
LoginManagerStorage_mozStorage.prototype = {
classID : Components.ID("{8c2023b9-175c-477e-9761-44ae7b549756}"),
QueryInterface : XPCOMUtils.generateQI([Ci.nsILoginManagerStorage,
Ci.nsIInterfaceRequestor]),
getInterface : function(aIID) {
if (aIID.equals(Ci.nsIVariant)) {
// Allows unwrapping the JavaScript object for regression tests.
return this;
}
if (aIID.equals(Ci.mozIStorageConnection)) {
return this._dbConnection;
}
throw Cr.NS_ERROR_NO_INTERFACE;
},
__crypto : null, // nsILoginManagerCrypto service
get _crypto() {
if (!this.__crypto)
this.__crypto = Cc["@mozilla.org/login-manager/crypto/SDR;1"].
getService(Ci.nsILoginManagerCrypto);
return this.__crypto;
},
__profileDir: null, // nsIFile for the user's profile dir
get _profileDir() {
if (!this.__profileDir)
this.__profileDir = Services.dirsvc.get("ProfD", Ci.nsIFile);
return this.__profileDir;
},
__storageService: null, // Storage service for using mozStorage
get _storageService() {
if (!this.__storageService)
this.__storageService = Cc["@mozilla.org/storage/service;1"].
getService(Ci.mozIStorageService);
return this.__storageService;
},
__uuidService: null,
get _uuidService() {
if (!this.__uuidService)
this.__uuidService = Cc["@mozilla.org/uuid-generator;1"].
getService(Ci.nsIUUIDGenerator);
return this.__uuidService;
},
// The current database schema.
_dbSchema: {
tables: {
moz_logins: "id INTEGER PRIMARY KEY," +
"hostname TEXT NOT NULL," +
"httpRealm TEXT," +
"formSubmitURL TEXT," +
"usernameField TEXT NOT NULL," +
"passwordField TEXT NOT NULL," +
"encryptedUsername TEXT NOT NULL," +
"encryptedPassword TEXT NOT NULL," +
"guid TEXT," +
"encType INTEGER," +
"timeCreated INTEGER," +
"timeLastUsed INTEGER," +
"timePasswordChanged INTEGER," +
"timesUsed INTEGER",
// Changes must be reflected in this._dbAreExpectedColumnsPresent(),
// this._searchLogins(), and this.modifyLogin().
moz_disabledHosts: "id INTEGER PRIMARY KEY," +
"hostname TEXT UNIQUE ON CONFLICT REPLACE",
moz_deleted_logins: "id INTEGER PRIMARY KEY," +
"guid TEXT," +
"timeDeleted INTEGER",
},
indices: {
moz_logins_hostname_index: {
table: "moz_logins",
columns: ["hostname"]
},
moz_logins_hostname_formSubmitURL_index: {
table: "moz_logins",
columns: ["hostname", "formSubmitURL"]
},
moz_logins_hostname_httpRealm_index: {
table: "moz_logins",
columns: ["hostname", "httpRealm"]
},
moz_logins_guid_index: {
table: "moz_logins",
columns: ["guid"]
},
moz_logins_encType_index: {
table: "moz_logins",
columns: ["encType"]
}
}
},
_dbConnection : null, // The database connection
_dbStmts : null, // Database statements for memoization
_prefBranch : null, // Preferences service
_signonsFile : null, // nsIFile for "signons.sqlite"
_debug : false, // mirrors signon.debug
/*
* log
*
* Internal function for logging debug messages to the Error Console.
*/
log : function (message) {
if (!this._debug)
return;
dump("PwMgr mozStorage: " + message + "\n");
Services.console.logStringMessage("PwMgr mozStorage: " + message);
},
/*
* Internal method used by regression tests only. It overrides the default
* database location.
*/
initWithFile : function(aDBFile) {
if (aDBFile)
this._signonsFile = aDBFile;
this.initialize();
},
/*
* initialize
*
*/
initialize : function () {
this._dbStmts = {};
// Connect to the correct preferences branch.
this._prefBranch = Services.prefs.getBranch("signon.");
this._debug = this._prefBranch.getBoolPref("debug");
let isFirstRun;
try {
// Force initialization of the crypto module.
// See bug 717490 comment 17.
this._crypto;
// If initWithFile is calling us, _signonsFile may already be set.
if (!this._signonsFile) {
// Initialize signons.sqlite
this._signonsFile = this._profileDir.clone();
this._signonsFile.append("signons.sqlite");
}
this.log("Opening database at " + this._signonsFile.path);
// Initialize the database (create, migrate as necessary)
isFirstRun = this._dbInit();
this._initialized = true;
return Promise.resolve();
} catch (e) {
this.log("Initialization failed: " + e);
// If the import fails on first run, we want to delete the db
if (isFirstRun && e == "Import failed")
this._dbCleanup(false);
throw "Initialization failed";
}
},
/*
* terminate
*
* Internal method used by regression tests only. It is called before
* replacing this storage module with a new instance.
*/
terminate : function () {
return Promise.resolve();
},
/*
* addLogin
*
*/
addLogin : function (login) {
// Throws if there are bogus values.
LoginHelper.checkLoginValues(login);
let [encUsername, encPassword, encType] = this._encryptLogin(login);
// Clone the login, so we don't modify the caller's object.
let loginClone = login.clone();
// Initialize the nsILoginMetaInfo fields, unless the caller gave us values
loginClone.QueryInterface(Ci.nsILoginMetaInfo);
if (loginClone.guid) {
if (!this._isGuidUnique(loginClone.guid))
throw "specified GUID already exists";
} else {
loginClone.guid = this._uuidService.generateUUID().toString();
}
// Set timestamps
let currentTime = Date.now();
if (!loginClone.timeCreated)
loginClone.timeCreated = currentTime;
if (!loginClone.timeLastUsed)
loginClone.timeLastUsed = currentTime;
if (!loginClone.timePasswordChanged)
loginClone.timePasswordChanged = currentTime;
if (!loginClone.timesUsed)
loginClone.timesUsed = 1;
let query =
"INSERT INTO moz_logins " +
"(hostname, httpRealm, formSubmitURL, usernameField, " +
"passwordField, encryptedUsername, encryptedPassword, " +
"guid, encType, timeCreated, timeLastUsed, timePasswordChanged, " +
"timesUsed) " +
"VALUES (:hostname, :httpRealm, :formSubmitURL, :usernameField, " +
":passwordField, :encryptedUsername, :encryptedPassword, " +
":guid, :encType, :timeCreated, :timeLastUsed, " +
":timePasswordChanged, :timesUsed)";
let params = {
hostname: loginClone.hostname,
httpRealm: loginClone.httpRealm,
formSubmitURL: loginClone.formSubmitURL,
usernameField: loginClone.usernameField,
passwordField: loginClone.passwordField,
encryptedUsername: encUsername,
encryptedPassword: encPassword,
guid: loginClone.guid,
encType: encType,
timeCreated: loginClone.timeCreated,
timeLastUsed: loginClone.timeLastUsed,
timePasswordChanged: loginClone.timePasswordChanged,
timesUsed: loginClone.timesUsed
};
let stmt;
try {
stmt = this._dbCreateStatement(query, params);
stmt.execute();
} catch (e) {
this.log("addLogin failed: " + e.name + " : " + e.message);
throw "Couldn't write to database, login not added.";
} finally {
if (stmt) {
stmt.reset();
}
}
// Send a notification that a login was added.
this._sendNotification("addLogin", loginClone);
},
/*
* removeLogin
*
*/
removeLogin : function (login) {
let [idToDelete, storedLogin] = this._getIdForLogin(login);
if (!idToDelete)
throw "No matching logins";
// Execute the statement & remove from DB
let query = "DELETE FROM moz_logins WHERE id = :id";
let params = { id: idToDelete };
let stmt;
let transaction = new Transaction(this._dbConnection);
try {
stmt = this._dbCreateStatement(query, params);
stmt.execute();
this.storeDeletedLogin(storedLogin);
transaction.commit();
} catch (e) {
this.log("_removeLogin failed: " + e.name + " : " + e.message);
throw "Couldn't write to database, login not removed.";
transaction.rollback();
} finally {
if (stmt) {
stmt.reset();
}
}
this._sendNotification("removeLogin", storedLogin);
},
/*
* modifyLogin
*
*/
modifyLogin : function (oldLogin, newLoginData) {
let [idToModify, oldStoredLogin] = this._getIdForLogin(oldLogin);
if (!idToModify)
throw "No matching logins";
let newLogin = LoginHelper.buildModifiedLogin(oldStoredLogin, newLoginData);
// Check if the new GUID is duplicate.
if (newLogin.guid != oldStoredLogin.guid &&
!this._isGuidUnique(newLogin.guid))
{
throw "specified GUID already exists";
}
// Look for an existing entry in case key properties changed.
if (!newLogin.matches(oldLogin, true)) {
let logins = this.findLogins({}, newLogin.hostname,
newLogin.formSubmitURL,
newLogin.httpRealm);
if (logins.some(login => newLogin.matches(login, true)))
throw "This login already exists.";
}
// Get the encrypted value of the username and password.
let [encUsername, encPassword, encType] = this._encryptLogin(newLogin);
let query =
"UPDATE moz_logins " +
"SET hostname = :hostname, " +
"httpRealm = :httpRealm, " +
"formSubmitURL = :formSubmitURL, " +
"usernameField = :usernameField, " +
"passwordField = :passwordField, " +
"encryptedUsername = :encryptedUsername, " +
"encryptedPassword = :encryptedPassword, " +
"guid = :guid, " +
"encType = :encType, " +
"timeCreated = :timeCreated, " +
"timeLastUsed = :timeLastUsed, " +
"timePasswordChanged = :timePasswordChanged, " +
"timesUsed = :timesUsed " +
"WHERE id = :id";
let params = {
id: idToModify,
hostname: newLogin.hostname,
httpRealm: newLogin.httpRealm,
formSubmitURL: newLogin.formSubmitURL,
usernameField: newLogin.usernameField,
passwordField: newLogin.passwordField,
encryptedUsername: encUsername,
encryptedPassword: encPassword,
guid: newLogin.guid,
encType: encType,
timeCreated: newLogin.timeCreated,
timeLastUsed: newLogin.timeLastUsed,
timePasswordChanged: newLogin.timePasswordChanged,
timesUsed: newLogin.timesUsed
};
let stmt;
try {
stmt = this._dbCreateStatement(query, params);
stmt.execute();
} catch (e) {
this.log("modifyLogin failed: " + e.name + " : " + e.message);
throw "Couldn't write to database, login not modified.";
} finally {
if (stmt) {
stmt.reset();
}
}
this._sendNotification("modifyLogin", [oldStoredLogin, newLogin]);
},
/*
* getAllLogins
*
* Returns an array of nsILoginInfo.
*/
getAllLogins : function (count) {
let [logins, ids] = this._searchLogins({});
// decrypt entries for caller.
logins = this._decryptLogins(logins);
this.log("_getAllLogins: returning " + logins.length + " logins.");
if (count)
count.value = logins.length; // needed for XPCOM
return logins;
},
/*
* searchLogins
*
* Public wrapper around _searchLogins to convert the nsIPropertyBag to a
* JavaScript object and decrypt the results.
*
* Returns an array of decrypted nsILoginInfo.
*/
searchLogins : function(count, matchData) {
let realMatchData = {};
// Convert nsIPropertyBag to normal JS object
let propEnum = matchData.enumerator;
while (propEnum.hasMoreElements()) {
let prop = propEnum.getNext().QueryInterface(Ci.nsIProperty);
realMatchData[prop.name] = prop.value;
}
let [logins, ids] = this._searchLogins(realMatchData);
// Decrypt entries found for the caller.
logins = this._decryptLogins(logins);
count.value = logins.length; // needed for XPCOM
return logins;
},
/*
* _searchLogins
*
* Private method to perform arbitrary searches on any field. Decryption is
* left to the caller.
*
* Returns [logins, ids] for logins that match the arguments, where logins
* is an array of encrypted nsLoginInfo and ids is an array of associated
* ids in the database.
*/
_searchLogins : function (matchData) {
let conditions = [], params = {};
for (let field in matchData) {
let value = matchData[field];
switch (field) {
// Historical compatibility requires this special case
case "formSubmitURL":
if (value != null) {
conditions.push("formSubmitURL = :formSubmitURL OR formSubmitURL = ''");
params["formSubmitURL"] = value;
break;
}
// Normal cases.
case "hostname":
case "httpRealm":
case "id":
case "usernameField":
case "passwordField":
case "encryptedUsername":
case "encryptedPassword":
case "guid":
case "encType":
case "timeCreated":
case "timeLastUsed":
case "timePasswordChanged":
case "timesUsed":
if (value == null) {
conditions.push(field + " isnull");
} else {
conditions.push(field + " = :" + field);
params[field] = value;
}
break;
// Fail if caller requests an unknown property.
default:
throw "Unexpected field: " + field;
}
}
// Build query
let query = "SELECT * FROM moz_logins";
if (conditions.length) {
conditions = conditions.map(function(c) "(" + c + ")");
query += " WHERE " + conditions.join(" AND ");
}
let stmt;
let logins = [], ids = [];
try {
stmt = this._dbCreateStatement(query, params);
// We can't execute as usual here, since we're iterating over rows
while (stmt.executeStep()) {
// Create the new nsLoginInfo object, push to array
let login = Cc["@mozilla.org/login-manager/loginInfo;1"].
createInstance(Ci.nsILoginInfo);
login.init(stmt.row.hostname, stmt.row.formSubmitURL,
stmt.row.httpRealm, stmt.row.encryptedUsername,
stmt.row.encryptedPassword, stmt.row.usernameField,
stmt.row.passwordField);
// set nsILoginMetaInfo values
login.QueryInterface(Ci.nsILoginMetaInfo);
login.guid = stmt.row.guid;
login.timeCreated = stmt.row.timeCreated;
login.timeLastUsed = stmt.row.timeLastUsed;
login.timePasswordChanged = stmt.row.timePasswordChanged;
login.timesUsed = stmt.row.timesUsed;
logins.push(login);
ids.push(stmt.row.id);
}
} catch (e) {
this.log("_searchLogins failed: " + e.name + " : " + e.message);
} finally {
if (stmt) {
stmt.reset();
}
}
this.log("_searchLogins: returning " + logins.length + " logins");
return [logins, ids];
},
/* storeDeletedLogin
*
* Moves a login to the deleted logins table
*
*/
storeDeletedLogin : function(aLogin) {
let stmt = null;
try {
this.log("Storing " + aLogin.guid + " in deleted passwords\n");
let query = "INSERT INTO moz_deleted_logins (guid, timeDeleted) VALUES (:guid, :timeDeleted)";
let params = { guid: aLogin.guid,
timeDeleted: Date.now() };
let stmt = this._dbCreateStatement(query, params);
stmt.execute();
} catch(ex) {
throw ex;
} finally {
if (stmt)
stmt.reset();
}
},
/*
* removeAllLogins
*
* Removes all logins from storage.
*/
removeAllLogins : function () {
this.log("Removing all logins");
let query;
let stmt;
let transaction = new Transaction(this._dbConnection);
// Disabled hosts kept, as one presumably doesn't want to erase those.
// TODO: Add these items to the deleted items table once we've sorted
// out the issues from bug 756701
query = "DELETE FROM moz_logins";
try {
stmt = this._dbCreateStatement(query);
stmt.execute();
transaction.commit();
} catch (e) {
this.log("_removeAllLogins failed: " + e.name + " : " + e.message);
transaction.rollback();
throw "Couldn't write to database";
} finally {
if (stmt) {
stmt.reset();
}
}
this._sendNotification("removeAllLogins", null);
},
/*
* getAllDisabledHosts
*
*/
getAllDisabledHosts : function (count) {
let disabledHosts = this._queryDisabledHosts(null);
this.log("_getAllDisabledHosts: returning " + disabledHosts.length + " disabled hosts.");
if (count)
count.value = disabledHosts.length; // needed for XPCOM
return disabledHosts;
},
/*
* getLoginSavingEnabled
*
*/
getLoginSavingEnabled : function (hostname) {
this.log("Getting login saving is enabled for " + hostname);
return this._queryDisabledHosts(hostname).length == 0
},
/*
* setLoginSavingEnabled
*
*/
setLoginSavingEnabled : function (hostname, enabled) {
// Throws if there are bogus values.
LoginHelper.checkHostnameValue(hostname);
this.log("Setting login saving enabled for " + hostname + " to " + enabled);
let query;
if (enabled)
query = "DELETE FROM moz_disabledHosts " +
"WHERE hostname = :hostname";
else
query = "INSERT INTO moz_disabledHosts " +
"(hostname) VALUES (:hostname)";
let params = { hostname: hostname };
let stmt
try {
stmt = this._dbCreateStatement(query, params);
stmt.execute();
} catch (e) {
this.log("setLoginSavingEnabled failed: " + e.name + " : " + e.message);
throw "Couldn't write to database"
} finally {
if (stmt) {
stmt.reset();
}
}
this._sendNotification(enabled ? "hostSavingEnabled" : "hostSavingDisabled", hostname);
},
/*
* findLogins
*
*/
findLogins : function (count, hostname, formSubmitURL, httpRealm) {
let loginData = {
hostname: hostname,
formSubmitURL: formSubmitURL,
httpRealm: httpRealm
};
let matchData = { };
for each (let field in ["hostname", "formSubmitURL", "httpRealm"])
if (loginData[field] != '')
matchData[field] = loginData[field];
let [logins, ids] = this._searchLogins(matchData);
// Decrypt entries found for the caller.
logins = this._decryptLogins(logins);
this.log("_findLogins: returning " + logins.length + " logins");
count.value = logins.length; // needed for XPCOM
return logins;
},
/*
* countLogins
*
*/
countLogins : function (hostname, formSubmitURL, httpRealm) {
// Do checks for null and empty strings, adjust conditions and params
let [conditions, params] =
this._buildConditionsAndParams(hostname, formSubmitURL, httpRealm);
let query = "SELECT COUNT(1) AS numLogins FROM moz_logins";
if (conditions.length) {
conditions = conditions.map(function(c) "(" + c + ")");
query += " WHERE " + conditions.join(" AND ");
}
let stmt, numLogins;
try {
stmt = this._dbCreateStatement(query, params);
stmt.executeStep();
numLogins = stmt.row.numLogins;
} catch (e) {
this.log("_countLogins failed: " + e.name + " : " + e.message);
} finally {
if (stmt) {
stmt.reset();
}
}
this.log("_countLogins: counted logins: " + numLogins);
return numLogins;
},
/*
* uiBusy
*/
get uiBusy() {
return this._crypto.uiBusy;
},
/*
* isLoggedIn
*/
get isLoggedIn() {
return this._crypto.isLoggedIn;
},
/*
* _sendNotification
*
* Send a notification when stored data is changed.
*/
_sendNotification : function (changeType, data) {
let dataObject = data;
// Can't pass a raw JS string or array though notifyObservers(). :-(
if (data instanceof Array) {
dataObject = Cc["@mozilla.org/array;1"].
createInstance(Ci.nsIMutableArray);
for (let i = 0; i < data.length; i++)
dataObject.appendElement(data[i], false);
} else if (typeof(data) == "string") {
dataObject = Cc["@mozilla.org/supports-string;1"].
createInstance(Ci.nsISupportsString);
dataObject.data = data;
}
Services.obs.notifyObservers(dataObject, "passwordmgr-storage-changed", changeType);
},
/*
* _getIdForLogin
*
* Returns an array with two items: [id, login]. If the login was not
* found, both items will be null. The returned login contains the actual
* stored login (useful for looking at the actual nsILoginMetaInfo values).
*/
_getIdForLogin : function (login) {
let matchData = { };
for each (let field in ["hostname", "formSubmitURL", "httpRealm"])
if (login[field] != '')
matchData[field] = login[field];
let [logins, ids] = this._searchLogins(matchData);
let id = null;
let foundLogin = null;
// The specified login isn't encrypted, so we need to ensure
// the logins we're comparing with are decrypted. We decrypt one entry
// at a time, lest _decryptLogins return fewer entries and screw up
// indices between the two.
for (let i = 0; i < logins.length; i++) {
let [decryptedLogin] = this._decryptLogins([logins[i]]);
if (!decryptedLogin || !decryptedLogin.equals(login))
continue;
// We've found a match, set id and break
foundLogin = decryptedLogin;
id = ids[i];
break;
}
return [id, foundLogin];
},
/*
* _queryDisabledHosts
*
* Returns an array of hostnames from the database according to the
* criteria given in the argument. If the argument hostname is null, the
* result array contains all hostnames
*/
_queryDisabledHosts : function (hostname) {
let disabledHosts = [];
let query = "SELECT hostname FROM moz_disabledHosts";
let params = {};
if (hostname) {
query += " WHERE hostname = :hostname";
params = { hostname: hostname };
}
let stmt;
try {
stmt = this._dbCreateStatement(query, params);
while (stmt.executeStep())
disabledHosts.push(stmt.row.hostname);
} catch (e) {
this.log("_queryDisabledHosts failed: " + e.name + " : " + e.message);
} finally {
if (stmt) {
stmt.reset();
}
}
return disabledHosts;
},
/*
* _buildConditionsAndParams
*
* Adjusts the WHERE conditions and parameters for statements prior to the
* statement being created. This fixes the cases where nulls are involved
* and the empty string is supposed to be a wildcard match
*/
_buildConditionsAndParams : function (hostname, formSubmitURL, httpRealm) {
let conditions = [], params = {};
if (hostname == null) {
conditions.push("hostname isnull");
} else if (hostname != '') {
conditions.push("hostname = :hostname");
params["hostname"] = hostname;
}
if (formSubmitURL == null) {
conditions.push("formSubmitURL isnull");
} else if (formSubmitURL != '') {
conditions.push("formSubmitURL = :formSubmitURL OR formSubmitURL = ''");
params["formSubmitURL"] = formSubmitURL;
}
if (httpRealm == null) {
conditions.push("httpRealm isnull");
} else if (httpRealm != '') {
conditions.push("httpRealm = :httpRealm");
params["httpRealm"] = httpRealm;
}
return [conditions, params];
},
/*
* _isGuidUnique
*
* Checks to see if the specified GUID already exists.
*/
_isGuidUnique : function (guid) {
let query = "SELECT COUNT(1) AS numLogins FROM moz_logins WHERE guid = :guid";
let params = { guid: guid };
let stmt, numLogins;
try {
stmt = this._dbCreateStatement(query, params);
stmt.executeStep();
numLogins = stmt.row.numLogins;
} catch (e) {
this.log("_isGuidUnique failed: " + e.name + " : " + e.message);
} finally {
if (stmt) {
stmt.reset();
}
}
return (numLogins == 0);
},
/*
* _encryptLogin
*
* Returns the encrypted username, password, and encrypton type for the specified
* login. Can throw if the user cancels a master password entry.
*/
_encryptLogin : function (login) {
let encUsername = this._crypto.encrypt(login.username);
let encPassword = this._crypto.encrypt(login.password);
let encType = this._crypto.defaultEncType;
return [encUsername, encPassword, encType];
},
/*
* _decryptLogins
*
* Decrypts username and password fields in the provided array of
* logins.
*
* The entries specified by the array will be decrypted, if possible.
* An array of successfully decrypted logins will be returned. The return
* value should be given to external callers (since still-encrypted
* entries are useless), whereas internal callers generally don't want
* to lose unencrypted entries (eg, because the user clicked Cancel
* instead of entering their master password)
*/
_decryptLogins : function (logins) {
let result = [];
for each (let login in logins) {
try {
login.username = this._crypto.decrypt(login.username);
login.password = this._crypto.decrypt(login.password);
} catch (e) {
// If decryption failed (corrupt entry?), just skip it.
// Rethrow other errors (like canceling entry of a master pw)
if (e.result == Cr.NS_ERROR_FAILURE)
continue;
throw e;
}
result.push(login);
}
return result;
},
//**************************************************************************//
// Database Creation & Access
/*
* _dbCreateStatement
*
* Creates a statement, wraps it, and then does parameter replacement
* Returns the wrapped statement for execution. Will use memoization
* so that statements can be reused.
*/
_dbCreateStatement : function (query, params) {
let wrappedStmt = this._dbStmts[query];
// Memoize the statements
if (!wrappedStmt) {
this.log("Creating new statement for query: " + query);
wrappedStmt = this._dbConnection.createStatement(query);
this._dbStmts[query] = wrappedStmt;
}
// Replace parameters, must be done 1 at a time
if (params)
for (let i in params)
wrappedStmt.params[i] = params[i];
return wrappedStmt;
},
/*
* _dbInit
*
* Attempts to initialize the database. This creates the file if it doesn't
* exist, performs any migrations, etc. Return if this is the first run.
*/
_dbInit : function () {
this.log("Initializing Database");
let isFirstRun = false;
try {
this._dbConnection = this._storageService.openDatabase(this._signonsFile);
// Get the version of the schema in the file. It will be 0 if the
// database has not been created yet.
let version = this._dbConnection.schemaVersion;
if (version == 0) {
this._dbCreate();
isFirstRun = true;
} else if (version != DB_VERSION) {
this._dbMigrate(version);
}
} catch (e if e.result == Cr.NS_ERROR_FILE_CORRUPTED) {
// Database is corrupted, so we backup the database, then throw
// causing initialization to fail and a new db to be created next use
this._dbCleanup(true);
throw e;
}
Services.obs.addObserver(this, "profile-before-change", false);
return isFirstRun;
},
observe: function (subject, topic, data) {
switch (topic) {
case "profile-before-change":
Services.obs.removeObserver(this, "profile-before-change");
this._dbClose();
break;
}
},
_dbCreate: function () {
this.log("Creating Database");
this._dbCreateSchema();
this._dbConnection.schemaVersion = DB_VERSION;
},
_dbCreateSchema : function () {
this._dbCreateTables();
this._dbCreateIndices();
},
_dbCreateTables : function () {
this.log("Creating Tables");
for (let name in this._dbSchema.tables)
this._dbConnection.createTable(name, this._dbSchema.tables[name]);
},
_dbCreateIndices : function () {
this.log("Creating Indices");
for (let name in this._dbSchema.indices) {
let index = this._dbSchema.indices[name];
let statement = "CREATE INDEX IF NOT EXISTS " + name + " ON " + index.table +
"(" + index.columns.join(", ") + ")";
this._dbConnection.executeSimpleSQL(statement);
}
},
_dbMigrate : function (oldVersion) {
this.log("Attempting to migrate from version " + oldVersion);
if (oldVersion > DB_VERSION) {
this.log("Downgrading to version " + DB_VERSION);
// User's DB is newer. Sanity check that our expected columns are
// present, and if so mark the lower version and merrily continue
// on. If the columns are borked, something is wrong so blow away
// the DB and start from scratch. [Future incompatible upgrades
// should swtich to a different table or file.]
if (!this._dbAreExpectedColumnsPresent())
throw Components.Exception("DB is missing expected columns",
Cr.NS_ERROR_FILE_CORRUPTED);
// Change the stored version to the current version. If the user
// runs the newer code again, it will see the lower version number
// and re-upgrade (to fixup any entries the old code added).
this._dbConnection.schemaVersion = DB_VERSION;
return;
}
// Upgrade to newer version...
let transaction = new Transaction(this._dbConnection);
try {
for (let v = oldVersion + 1; v <= DB_VERSION; v++) {
this.log("Upgrading to version " + v + "...");
let migrateFunction = "_dbMigrateToVersion" + v;
this[migrateFunction]();
}
} catch (e) {
this.log("Migration failed: " + e);
transaction.rollback();
throw e;
}
this._dbConnection.schemaVersion = DB_VERSION;
transaction.commit();
this.log("DB migration completed.");
},
/*
* _dbMigrateToVersion2
*
* Version 2 adds a GUID column. Existing logins are assigned a random GUID.
*/
_dbMigrateToVersion2 : function () {
// Check to see if GUID column already exists, add if needed
let query;
if (!this._dbColumnExists("guid")) {
query = "ALTER TABLE moz_logins ADD COLUMN guid TEXT";
this._dbConnection.executeSimpleSQL(query);
query = "CREATE INDEX IF NOT EXISTS moz_logins_guid_index ON moz_logins (guid)";
this._dbConnection.executeSimpleSQL(query);
}
// Get a list of IDs for existing logins
let ids = [];
query = "SELECT id FROM moz_logins WHERE guid isnull";
let stmt;
try {
stmt = this._dbCreateStatement(query);
while (stmt.executeStep())
ids.push(stmt.row.id);
} catch (e) {
this.log("Failed getting IDs: " + e);
throw e;
} finally {
if (stmt) {
stmt.reset();
}
}
// Generate a GUID for each login and update the DB.
query = "UPDATE moz_logins SET guid = :guid WHERE id = :id";
for each (let id in ids) {
let params = {
id: id,
guid: this._uuidService.generateUUID().toString()
};
try {
stmt = this._dbCreateStatement(query, params);
stmt.execute();
} catch (e) {
this.log("Failed setting GUID: " + e);
throw e;
} finally {
if (stmt) {
stmt.reset();
}
}
}
},
/*
* _dbMigrateToVersion3
*
* Version 3 adds a encType column.
*/
_dbMigrateToVersion3 : function () {
// Check to see if encType column already exists, add if needed
let query;
if (!this._dbColumnExists("encType")) {
query = "ALTER TABLE moz_logins ADD COLUMN encType INTEGER";
this._dbConnection.executeSimpleSQL(query);
query = "CREATE INDEX IF NOT EXISTS " +
"moz_logins_encType_index ON moz_logins (encType)";
this._dbConnection.executeSimpleSQL(query);
}
// Get a list of existing logins
let logins = [];
let stmt;
query = "SELECT id, encryptedUsername, encryptedPassword " +
"FROM moz_logins WHERE encType isnull";
try {
stmt = this._dbCreateStatement(query);
while (stmt.executeStep()) {
let params = { id: stmt.row.id };
// We will tag base64 logins correctly, but no longer support their use.
if (stmt.row.encryptedUsername.charAt(0) == '~' ||
stmt.row.encryptedPassword.charAt(0) == '~')
params.encType = Ci.nsILoginManagerCrypto.ENCTYPE_BASE64;
else
params.encType = Ci.nsILoginManagerCrypto.ENCTYPE_SDR;
logins.push(params);
}
} catch (e) {
this.log("Failed getting logins: " + e);
throw e;
} finally {
if (stmt) {
stmt.reset();
}
}
// Determine encryption type for each login and update the DB.
query = "UPDATE moz_logins SET encType = :encType WHERE id = :id";
for each (let params in logins) {
try {
stmt = this._dbCreateStatement(query, params);
stmt.execute();
} catch (e) {
this.log("Failed setting encType: " + e);
throw e;
} finally {
if (stmt) {
stmt.reset();
}
}
}
},
/*
* _dbMigrateToVersion4
*
* Version 4 adds timeCreated, timeLastUsed, timePasswordChanged,
* and timesUsed columns
*/
_dbMigrateToVersion4 : function () {
let query;
// Add the new columns, if needed.
for each (let column in ["timeCreated", "timeLastUsed", "timePasswordChanged", "timesUsed"]) {
if (!this._dbColumnExists(column)) {
query = "ALTER TABLE moz_logins ADD COLUMN " + column + " INTEGER";
this._dbConnection.executeSimpleSQL(query);
}
}
// Get a list of IDs for existing logins.
let ids = [];
let stmt;
query = "SELECT id FROM moz_logins WHERE timeCreated isnull OR " +
"timeLastUsed isnull OR timePasswordChanged isnull OR timesUsed isnull";
try {
stmt = this._dbCreateStatement(query);
while (stmt.executeStep())
ids.push(stmt.row.id);
} catch (e) {
this.log("Failed getting IDs: " + e);
throw e;
} finally {
if (stmt) {
stmt.reset();
}
}
// Initialize logins with current time.
query = "UPDATE moz_logins SET timeCreated = :initTime, timeLastUsed = :initTime, " +
"timePasswordChanged = :initTime, timesUsed = 1 WHERE id = :id";
let params = {
id: null,
initTime: Date.now()
};
for each (let id in ids) {
params.id = id;
try {
stmt = this._dbCreateStatement(query, params);
stmt.execute();
} catch (e) {
this.log("Failed setting timestamps: " + e);
throw e;
} finally {
if (stmt) {
stmt.reset();
}
}
}
},
/*
* _dbMigrateToVersion5
*
* Version 5 adds the moz_deleted_logins table
*/
_dbMigrateToVersion5 : function () {
if (!this._dbConnection.tableExists("moz_deleted_logins")) {
this._dbConnection.createTable("moz_deleted_logins", this._dbSchema.tables.moz_deleted_logins);
}
},
/*
* _dbAreExpectedColumnsPresent
*
* Sanity check to ensure that the columns this version of the code expects
* are present in the DB we're using.
*/
_dbAreExpectedColumnsPresent : function () {
let query = "SELECT " +
"id, " +
"hostname, " +
"httpRealm, " +
"formSubmitURL, " +
"usernameField, " +
"passwordField, " +
"encryptedUsername, " +
"encryptedPassword, " +
"guid, " +
"encType, " +
"timeCreated, " +
"timeLastUsed, " +
"timePasswordChanged, " +
"timesUsed " +
"FROM moz_logins";
try {
let stmt = this._dbConnection.createStatement(query);
// (no need to execute statement, if it compiled we're good)
stmt.finalize();
} catch (e) {
return false;
}
query = "SELECT " +
"id, " +
"hostname " +
"FROM moz_disabledHosts";
try {
let stmt = this._dbConnection.createStatement(query);
// (no need to execute statement, if it compiled we're good)
stmt.finalize();
} catch (e) {
return false;
}
this.log("verified that expected columns are present in DB.");
return true;
},
/*
* _dbColumnExists
*
* Checks to see if the named column already exists.
*/
_dbColumnExists : function (columnName) {
let query = "SELECT " + columnName + " FROM moz_logins";
try {
let stmt = this._dbConnection.createStatement(query);
// (no need to execute statement, if it compiled we're good)
stmt.finalize();
return true;
} catch (e) {
return false;
}
},
_dbClose : function () {
this.log("Closing the DB connection.");
// Finalize all statements to free memory, avoid errors later
for each (let stmt in this._dbStmts) {
stmt.finalize();
}
this._dbStmts = {};
if (this._dbConnection !== null) {
try {
this._dbConnection.close();
} catch (e) {
Components.utils.reportError(e);
}
}
this._dbConnection = null;
},
/*
* _dbCleanup
*
* Called when database creation fails. Finalizes database statements,
* closes the database connection, deletes the database file.
*/
_dbCleanup : function (backup) {
this.log("Cleaning up DB file - close & remove & backup=" + backup)
// Create backup file
if (backup) {
let backupFile = this._signonsFile.leafName + ".corrupt";
this._storageService.backupDatabaseFile(this._signonsFile, backupFile);
}
this._dbClose();
this._signonsFile.remove(false);
}
}; // end of nsLoginManagerStorage_mozStorage implementation
let component = [LoginManagerStorage_mozStorage];
this.NSGetFactory = XPCOMUtils.generateNSGetFactory(component);