/* 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/. */ /** * Contains functions shared by different Login Manager components. * * This JavaScript module exists in order to share code between the different * XPCOM components that constitute the Login Manager, including implementations * of nsILoginManager and nsILoginManagerStorage. */ "use strict"; this.EXPORTED_SYMBOLS = [ "LoginHelper", ]; // Globals const { classes: Cc, interfaces: Ci, utils: Cu, results: Cr } = Components; Cu.import("resource://gre/modules/Services.jsm"); Cu.import("resource://gre/modules/XPCOMUtils.jsm"); // LoginHelper /** * Contains functions shared by different Login Manager components. */ this.LoginHelper = { /** * Warning: these only update if a logger was created. */ debug: Services.prefs.getBoolPref("signon.debug"), formlessCaptureEnabled: Services.prefs.getBoolPref("signon.formlessCapture.enabled"), schemeUpgrades: Services.prefs.getBoolPref("signon.schemeUpgrades"), insecureAutofill: Services.prefs.getBoolPref("signon.autofillForms.http"), showInsecureFieldWarning: Services.prefs.getBoolPref("security.insecure_field_warning.contextual.enabled"), createLogger(aLogPrefix) { let getMaxLogLevel = () => { return this.debug ? "debug" : "warn"; }; // Create a new instance of the ConsoleAPI so we can control the maxLogLevel with a pref. let ConsoleAPI = Cu.import("resource://gre/modules/Console.jsm", {}).ConsoleAPI; let consoleOptions = { maxLogLevel: getMaxLogLevel(), prefix: aLogPrefix, }; let logger = new ConsoleAPI(consoleOptions); // Watch for pref changes and update this.debug and the maxLogLevel for created loggers Services.prefs.addObserver("signon.", () => { this.debug = Services.prefs.getBoolPref("signon.debug"); this.formlessCaptureEnabled = Services.prefs.getBoolPref("signon.formlessCapture.enabled"); this.schemeUpgrades = Services.prefs.getBoolPref("signon.schemeUpgrades"); this.insecureAutofill = Services.prefs.getBoolPref("signon.autofillForms.http"); logger.maxLogLevel = getMaxLogLevel(); }, false); Services.prefs.addObserver("security.insecure_field_warning.", () => { this.showInsecureFieldWarning = Services.prefs.getBoolPref("security.insecure_field_warning.contextual.enabled"); }, false); return logger; }, /** * Due to the way the signons2.txt file is formatted, we need to make * sure certain field values or characters do not cause the file to * be parsed incorrectly. Reject hostnames that we can't store correctly. * * @throws String with English message in case validation failed. */ checkHostnameValue(aHostname) { // Nulls are invalid, as they don't round-trip well. Newlines are also // invalid for any field stored as plaintext, and a hostname made of a // single dot cannot be stored in the legacy format. if (aHostname == "." || aHostname.indexOf("\r") != -1 || aHostname.indexOf("\n") != -1 || aHostname.indexOf("\0") != -1) { throw new Error("Invalid hostname"); } }, /** * Due to the way the signons2.txt file is formatted, we need to make * sure certain field values or characters do not cause the file to * be parsed incorrectly. Reject logins that we can't store correctly. * * @throws String with English message in case validation failed. */ checkLoginValues(aLogin) { function badCharacterPresent(l, c) { return ((l.formSubmitURL && l.formSubmitURL.indexOf(c) != -1) || (l.httpRealm && l.httpRealm.indexOf(c) != -1) || l.hostname.indexOf(c) != -1 || l.usernameField.indexOf(c) != -1 || l.passwordField.indexOf(c) != -1); } // Nulls are invalid, as they don't round-trip well. // Mostly not a formatting problem, although ".\0" can be quirky. if (badCharacterPresent(aLogin, "\0")) { throw new Error("login values can't contain nulls"); } // In theory these nulls should just be rolled up into the encrypted // values, but nsISecretDecoderRing doesn't use nsStrings, so the // nulls cause truncation. Check for them here just to avoid // unexpected round-trip surprises. if (aLogin.username.indexOf("\0") != -1 || aLogin.password.indexOf("\0") != -1) { throw new Error("login values can't contain nulls"); } // Newlines are invalid for any field stored as plaintext. if (badCharacterPresent(aLogin, "\r") || badCharacterPresent(aLogin, "\n")) { throw new Error("login values can't contain newlines"); } // A line with just a "." can have special meaning. if (aLogin.usernameField == "." || aLogin.formSubmitURL == ".") { throw new Error("login values can't be periods"); } // A hostname with "\ \(" won't roundtrip. // eg host="foo (", realm="bar" --> "foo ( (bar)" // vs host="foo", realm=" (bar" --> "foo ( (bar)" if (aLogin.hostname.indexOf(" (") != -1) { throw new Error("bad parens in hostname"); } }, /** * Returns a new XPCOM property bag with the provided properties. * * @param {Object} aProperties * Each property of this object is copied to the property bag. This * parameter can be omitted to return an empty property bag. * * @return A new property bag, that is an instance of nsIWritablePropertyBag, * nsIWritablePropertyBag2, nsIPropertyBag, and nsIPropertyBag2. */ newPropertyBag(aProperties) { let propertyBag = Cc["@mozilla.org/hash-property-bag;1"] .createInstance(Ci.nsIWritablePropertyBag); if (aProperties) { for (let [name, value] of Object.entries(aProperties)) { propertyBag.setProperty(name, value); } } return propertyBag.QueryInterface(Ci.nsIPropertyBag) .QueryInterface(Ci.nsIPropertyBag2) .QueryInterface(Ci.nsIWritablePropertyBag2); }, /** * Helper to avoid the `count` argument and property bags when calling * Services.logins.searchLogins from JS. * * @param {Object} aSearchOptions - A regular JS object to copy to a property bag before searching * @return {nsILoginInfo[]} - The result of calling searchLogins. */ searchLoginsWithObject(aSearchOptions) { return Services.logins.searchLogins({}, this.newPropertyBag(aSearchOptions)); }, /** * @param {String} aLoginOrigin - An origin value from a stored login's * hostname or formSubmitURL properties. * @param {String} aSearchOrigin - The origin that was are looking to match * with aLoginOrigin. This would normally come * from a form or page that we are considering. * @param {nsILoginFindOptions} aOptions - Options to affect whether the origin * from the login (aLoginOrigin) is a * match for the origin we're looking * for (aSearchOrigin). */ isOriginMatching(aLoginOrigin, aSearchOrigin, aOptions = { schemeUpgrades: false, }) { if (aLoginOrigin == aSearchOrigin) { return true; } if (!aOptions) { return false; } if (aOptions.schemeUpgrades) { try { let loginURI = Services.io.newURI(aLoginOrigin, null, null); let searchURI = Services.io.newURI(aSearchOrigin, null, null); if (loginURI.scheme == "http" && searchURI.scheme == "https" && loginURI.hostPort == searchURI.hostPort) { return true; } } catch (ex) { // newURI will throw for some values e.g. chrome://FirefoxAccounts return false; } } return false; }, doLoginsMatch(aLogin1, aLogin2, { ignorePassword = false, ignoreSchemes = false, }) { if (aLogin1.httpRealm != aLogin2.httpRealm || aLogin1.username != aLogin2.username) return false; if (!ignorePassword && aLogin1.password != aLogin2.password) return false; if (ignoreSchemes) { let hostname1URI = Services.io.newURI(aLogin1.hostname, null, null); let hostname2URI = Services.io.newURI(aLogin2.hostname, null, null); if (hostname1URI.hostPort != hostname2URI.hostPort) return false; if (aLogin1.formSubmitURL != "" && aLogin2.formSubmitURL != "" && Services.io.newURI(aLogin1.formSubmitURL, null, null).hostPort != Services.io.newURI(aLogin2.formSubmitURL, null, null).hostPort) return false; } else { if (aLogin1.hostname != aLogin2.hostname) return false; // If either formSubmitURL is blank (but not null), then match. if (aLogin1.formSubmitURL != "" && aLogin2.formSubmitURL != "" && aLogin1.formSubmitURL != aLogin2.formSubmitURL) return false; } // The .usernameField and .passwordField values are ignored. return true; }, /** * Creates a new login object that results by modifying the given object with * the provided data. * * @param aOldStoredLogin * Existing nsILoginInfo object to modify. * @param aNewLoginData * The new login values, either as nsILoginInfo or nsIProperyBag. * * @return The newly created nsILoginInfo object. * * @throws String with English message in case validation failed. */ buildModifiedLogin(aOldStoredLogin, aNewLoginData) { function bagHasProperty(aPropName) { try { aNewLoginData.getProperty(aPropName); return true; } catch (ex) { } return false; } aOldStoredLogin.QueryInterface(Ci.nsILoginMetaInfo); let newLogin; if (aNewLoginData instanceof Ci.nsILoginInfo) { // Clone the existing login to get its nsILoginMetaInfo, then init it // with the replacement nsILoginInfo data from the new login. newLogin = aOldStoredLogin.clone(); newLogin.init(aNewLoginData.hostname, aNewLoginData.formSubmitURL, aNewLoginData.httpRealm, aNewLoginData.username, aNewLoginData.password, aNewLoginData.usernameField, aNewLoginData.passwordField); newLogin.QueryInterface(Ci.nsILoginMetaInfo); // Automatically update metainfo when password is changed. if (newLogin.password != aOldStoredLogin.password) { newLogin.timePasswordChanged = Date.now(); } } else if (aNewLoginData instanceof Ci.nsIPropertyBag) { // Clone the existing login, along with all its properties. newLogin = aOldStoredLogin.clone(); newLogin.QueryInterface(Ci.nsILoginMetaInfo); // Automatically update metainfo when password is changed. // (Done before the main property updates, lest the caller be // explicitly updating both .password and .timePasswordChanged) if (bagHasProperty("password")) { let newPassword = aNewLoginData.getProperty("password"); if (newPassword != aOldStoredLogin.password) { newLogin.timePasswordChanged = Date.now(); } } let propEnum = aNewLoginData.enumerator; while (propEnum.hasMoreElements()) { let prop = propEnum.getNext().QueryInterface(Ci.nsIProperty); switch (prop.name) { // nsILoginInfo case "hostname": case "httpRealm": case "formSubmitURL": case "username": case "password": case "usernameField": case "passwordField": // nsILoginMetaInfo case "guid": case "timeCreated": case "timeLastUsed": case "timePasswordChanged": case "timesUsed": newLogin[prop.name] = prop.value; break; // Fake property, allows easy incrementing. case "timesUsedIncrement": newLogin.timesUsed += prop.value; break; // Fail if caller requests setting an unknown property. default: throw new Error("Unexpected propertybag item: " + prop.name); } } } else { throw new Error("newLoginData needs an expected interface!"); } // Sanity check the login if (newLogin.hostname == null || newLogin.hostname.length == 0) { throw new Error("Can't add a login with a null or empty hostname."); } // For logins w/o a username, set to "", not null. if (newLogin.username == null) { throw new Error("Can't add a login with a null username."); } if (newLogin.password == null || newLogin.password.length == 0) { throw new Error("Can't add a login with a null or empty password."); } if (newLogin.formSubmitURL || newLogin.formSubmitURL == "") { // We have a form submit URL. Can't have a HTTP realm. if (newLogin.httpRealm != null) { throw new Error("Can't add a login with both a httpRealm and formSubmitURL."); } } else if (newLogin.httpRealm) { // We have a HTTP realm. Can't have a form submit URL. if (newLogin.formSubmitURL != null) { throw new Error("Can't add a login with both a httpRealm and formSubmitURL."); } } else { // Need one or the other! throw new Error("Can't add a login without a httpRealm or formSubmitURL."); } // Throws if there are bogus values. this.checkLoginValues(newLogin); return newLogin; }, /** * Removes duplicates from a list of logins while preserving the sort order. * * @param {nsILoginInfo[]} logins * A list of logins we want to deduplicate. * @param {string[]} [uniqueKeys = ["username", "password"]] * A list of login attributes to use as unique keys for the deduplication. * @param {string[]} [resolveBy = ["timeLastUsed"]] * Ordered array of keyword strings used to decide which of the * duplicates should be used. "scheme" would prefer the login that has * a scheme matching `preferredOrigin`'s if there are two logins with * the same `uniqueKeys`. The default preference to distinguish two * logins is `timeLastUsed`. If there is no preference between two * logins, the first one found wins. * @param {string} [preferredOrigin = undefined] * String representing the origin to use for preferring one login over * another when they are dupes. This is used with "scheme" for * `resolveBy` so the scheme from this origin will be preferred. * * @returns {nsILoginInfo[]} list of unique logins. */ dedupeLogins(logins, uniqueKeys = ["username", "password"], resolveBy = ["timeLastUsed"], preferredOrigin = undefined) { const KEY_DELIMITER = ":"; if (!preferredOrigin && resolveBy.includes("scheme")) { throw new Error("dedupeLogins: `preferredOrigin` is required in order to " + "prefer schemes which match it."); } let preferredOriginScheme; if (preferredOrigin) { try { preferredOriginScheme = Services.io.newURI(preferredOrigin, null, null).scheme; } catch (ex) { // Handle strings that aren't valid URIs e.g. chrome://FirefoxAccounts } } if (!preferredOriginScheme && resolveBy.includes("scheme")) { log.warn("dedupeLogins: Deduping with a scheme preference but couldn't " + "get the preferred origin scheme."); } // We use a Map to easily lookup logins by their unique keys. let loginsByKeys = new Map(); // Generate a unique key string from a login. function getKey(login, uniqueKeys) { return uniqueKeys.reduce((prev, key) => prev + KEY_DELIMITER + login[key], ""); } /** * @return {bool} whether `login` is preferred over its duplicate (considering `uniqueKeys`) * `existingLogin`. * * `resolveBy` is a sorted array so we can return true the first time `login` is preferred * over the existingLogin. */ function isLoginPreferred(existingLogin, login) { if (!resolveBy || resolveBy.length == 0) { // If there is no preference, prefer the existing login. return false; } for (let preference of resolveBy) { switch (preference) { case "scheme": { if (!preferredOriginScheme) { break; } try { // Only `hostname` is currently considered let existingLoginURI = Services.io.newURI(existingLogin.hostname, null, null); let loginURI = Services.io.newURI(login.hostname, null, null); // If the schemes of the two logins are the same or neither match the // preferredOriginScheme then we have no preference and look at the next resolveBy. if (loginURI.scheme == existingLoginURI.scheme || (loginURI.scheme != preferredOriginScheme && existingLoginURI.scheme != preferredOriginScheme)) { break; } return loginURI.scheme == preferredOriginScheme; } catch (ex) { // Some URLs aren't valid nsIURI (e.g. chrome://FirefoxAccounts) log.debug("dedupeLogins/shouldReplaceExisting: Error comparing schemes:", existingLogin.hostname, login.hostname, "preferredOrigin:", preferredOrigin, ex); } break; } case "timeLastUsed": case "timePasswordChanged": { // If we find a more recent login for the same key, replace the existing one. let loginDate = login.QueryInterface(Ci.nsILoginMetaInfo)[preference]; let storedLoginDate = existingLogin.QueryInterface(Ci.nsILoginMetaInfo)[preference]; if (loginDate == storedLoginDate) { break; } return loginDate > storedLoginDate; } default: { throw new Error("dedupeLogins: Invalid resolveBy preference: " + preference); } } } return false; } for (let login of logins) { let key = getKey(login, uniqueKeys); if (loginsByKeys.has(key)) { if (!isLoginPreferred(loginsByKeys.get(key), login)) { // If there is no preference for the new login, use the existing one. continue; } } loginsByKeys.set(key, login); } // Return the map values in the form of an array. return [...loginsByKeys.values()]; }, /** * Open the password manager window. * * @param {Window} window * the window from where we want to open the dialog * * @param {string} [filterString=""] * the filterString parameter to pass to the login manager dialog */ openPasswordManager(window, filterString = "") { let win = Services.wm.getMostRecentWindow("Toolkit:PasswordManager"); if (win) { win.setFilter(filterString); win.focus(); } else { window.openDialog("chrome://passwordmgr/content/passwordManager.xul", "Toolkit:PasswordManager", "", {filterString : filterString}); } }, /** * Checks if a field type is username compatible. * * @param {Element} element * the field we want to check. * * @returns {Boolean} true if the field type is one * of the username types. */ isUsernameFieldType(element) { if (!(element instanceof Ci.nsIDOMHTMLInputElement)) return false; let fieldType = (element.hasAttribute("type") ? element.getAttribute("type").toLowerCase() : element.type); if (fieldType == "text" || fieldType == "email" || fieldType == "url" || fieldType == "tel" || fieldType == "number") { return true; } return false; }, /** * Add the login to the password manager if a similar one doesn't already exist. Merge it * otherwise with the similar existing ones. * @param {Object} loginData - the data about the login that needs to be added. * @returns {nsILoginInfo} the newly added login, or null if no login was added. * Note that we will also return null if an existing login * was modified. */ maybeImportLogin(loginData) { // create a new login let login = Cc["@mozilla.org/login-manager/loginInfo;1"].createInstance(Ci.nsILoginInfo); login.init(loginData.hostname, loginData.formSubmitURL || (typeof(loginData.httpRealm) == "string" ? null : ""), typeof(loginData.httpRealm) == "string" ? loginData.httpRealm : null, loginData.username, loginData.password, loginData.usernameElement || "", loginData.passwordElement || ""); login.QueryInterface(Ci.nsILoginMetaInfo); login.timeCreated = loginData.timeCreated; login.timeLastUsed = loginData.timeLastUsed || loginData.timeCreated; login.timePasswordChanged = loginData.timePasswordChanged || loginData.timeCreated; login.timesUsed = loginData.timesUsed || 1; // While here we're passing formSubmitURL and httpRealm, they could be empty/null and get // ignored in that case, leading to multiple logins for the same username. let existingLogins = Services.logins.findLogins({}, login.hostname, login.formSubmitURL, login.httpRealm); // Check for an existing login that matches *including* the password. // If such a login exists, we do not need to add a new login. if (existingLogins.some(l => login.matches(l, false /* ignorePassword */))) { return null; } // Now check for a login with the same username, where it may be that we have an // updated password. let foundMatchingLogin = false; for (let existingLogin of existingLogins) { if (login.username == existingLogin.username) { foundMatchingLogin = true; existingLogin.QueryInterface(Ci.nsILoginMetaInfo); if (login.password != existingLogin.password & login.timePasswordChanged > existingLogin.timePasswordChanged) { // if a login with the same username and different password already exists and it's older // than the current one, update its password and timestamp. let propBag = Cc["@mozilla.org/hash-property-bag;1"]. createInstance(Ci.nsIWritablePropertyBag); propBag.setProperty("password", login.password); propBag.setProperty("timePasswordChanged", login.timePasswordChanged); Services.logins.modifyLogin(existingLogin, propBag); } } } // if the new login is an update or is older than an exiting login, don't add it. if (foundMatchingLogin) { return null; } return Services.logins.addLogin(login); }, /** * Convert an array of nsILoginInfo to vanilla JS objects suitable for * sending over IPC. * * NB: All members of nsILoginInfo and nsILoginMetaInfo are strings. */ loginsToVanillaObjects(logins) { return logins.map(this.loginToVanillaObject); }, /** * Same as above, but for a single login. */ loginToVanillaObject(login) { let obj = {}; for (let i in login.QueryInterface(Ci.nsILoginMetaInfo)) { if (typeof login[i] !== 'function') { obj[i] = login[i]; } } return obj; }, /** * Convert an object received from IPC into an nsILoginInfo (with guid). */ vanillaObjectToLogin(login) { let formLogin = Cc["@mozilla.org/login-manager/loginInfo;1"]. createInstance(Ci.nsILoginInfo); formLogin.init(login.hostname, login.formSubmitURL, login.httpRealm, login.username, login.password, login.usernameField, login.passwordField); formLogin.QueryInterface(Ci.nsILoginMetaInfo); for (let prop of ["guid", "timeCreated", "timeLastUsed", "timePasswordChanged", "timesUsed"]) { formLogin[prop] = login[prop]; } return formLogin; }, /** * As above, but for an array of objects. */ vanillaObjectsToLogins(logins) { return logins.map(this.vanillaObjectToLogin); }, removeLegacySignonFiles() { const {Constants, Path, File} = Cu.import("resource://gre/modules/osfile.jsm").OS; const profileDir = Constants.Path.profileDir; const defaultSignonFilePrefs = new Map([ ["signon.SignonFileName", "signons.txt"], ["signon.SignonFileName2", "signons2.txt"], ["signon.SignonFileName3", "signons3.txt"] ]); const toDeletes = new Set(); for (let [pref, val] of defaultSignonFilePrefs.entries()) { toDeletes.add(Path.join(profileDir, val)); try { let signonFile = Services.prefs.getCharPref(pref); toDeletes.add(Path.join(profileDir, signonFile)); Services.prefs.clearUserPref(pref); } catch (e) {} } for (let file of toDeletes) { File.remove(file); } }, /** * Returns true if the user has a master password set and false otherwise. */ isMasterPasswordSet() { let secmodDB = Cc["@mozilla.org/security/pkcs11moduledb;1"]. getService(Ci.nsIPKCS11ModuleDB); let slot = secmodDB.findSlotByName(""); if (!slot) { return false; } let hasMP = slot.status != Ci.nsIPKCS11Slot.SLOT_UNINITIALIZED && slot.status != Ci.nsIPKCS11Slot.SLOT_READY; return hasMP; }, /** * Send a notification when stored data is changed. */ notifyStorageChanged(changeType, data) { let dataObject = data; // Can't pass a raw JS string or array though notifyObservers(). :-( if (Array.isArray(data)) { 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); } }; XPCOMUtils.defineLazyGetter(this, "log", () => { let logger = LoginHelper.createLogger("LoginHelper"); return logger; });