gecko/toolkit/components/passwordmgr/nsLoginManager.js

1412 lines
51 KiB
JavaScript

/* 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;
Components.utils.import("resource://gre/modules/XPCOMUtils.jsm");
Components.utils.import("resource://gre/modules/Services.jsm");
Components.utils.import("resource://gre/modules/PrivateBrowsingUtils.jsm");
var debug = false;
function log(...pieces) {
function generateLogMessage(args) {
let strings = ['Login Manager:'];
args.forEach(function(arg) {
if (typeof arg === 'string') {
strings.push(arg);
} else if (typeof arg === 'undefined') {
strings.push('undefined');
} else if (arg === null) {
strings.push('null');
} else {
try {
strings.push(JSON.stringify(arg, null, 2));
} catch(err) {
strings.push("<<something>>");
}
}
});
return strings.join(' ');
}
if (!debug)
return;
let message = generateLogMessage(pieces);
dump(message + "\n");
Services.console.logStringMessage(message);
}
function LoginManager() {
this.init();
}
LoginManager.prototype = {
classID: Components.ID("{cb9e0de8-3598-4ed7-857b-827f011ad5d8}"),
QueryInterface : XPCOMUtils.generateQI([Ci.nsILoginManager,
Ci.nsISupportsWeakReference,
Ci.nsIInterfaceRequestor]),
getInterface : function(aIID) {
if (aIID.equals(Ci.mozIStorageConnection) && this._storage) {
let ir = this._storage.QueryInterface(Ci.nsIInterfaceRequestor);
return ir.getInterface(aIID);
}
throw Cr.NS_ERROR_NO_INTERFACE;
},
/* ---------- private memebers ---------- */
__formFillService : null, // FormFillController, for username autocompleting
get _formFillService() {
if (!this.__formFillService)
this.__formFillService =
Cc["@mozilla.org/satchel/form-fill-controller;1"].
getService(Ci.nsIFormFillController);
return this.__formFillService;
},
__storage : null, // Storage component which contains the saved logins
get _storage() {
if (!this.__storage) {
var contractID = "@mozilla.org/login-manager/storage/mozStorage;1";
try {
var catMan = Cc["@mozilla.org/categorymanager;1"].
getService(Ci.nsICategoryManager);
contractID = catMan.getCategoryEntry("login-manager-storage",
"nsILoginManagerStorage");
log("Found alternate nsILoginManagerStorage with contract ID:", contractID);
} catch (e) {
log("No alternate nsILoginManagerStorage registered");
}
this.__storage = Cc[contractID].
createInstance(Ci.nsILoginManagerStorage);
try {
this.__storage.init();
} catch (e) {
log("Initialization of storage component failed:", e);
this.__storage = null;
}
}
return this.__storage;
},
_prefBranch : null, // Preferences service
_nsLoginInfo : null, // Constructor for nsILoginInfo implementation
_remember : true, // mirrors signon.rememberSignons preference
/*
* init
*
* Initialize the Login Manager. Automatically called when service
* is created.
*
* Note: Service created in /browser/base/content/browser.js,
* delayedStartup()
*/
init : function () {
// Cache references to current |this| in utility objects
this._webProgressListener._domEventListener = this._domEventListener;
this._webProgressListener._pwmgr = this;
this._domEventListener._pwmgr = this;
this._observer._pwmgr = this;
// Preferences. Add observer so we get notified of changes.
this._prefBranch = Services.prefs.getBranch("signon.");
this._prefBranch.addObserver("", this._observer, false);
// Get current preference values.
debug = this._prefBranch.getBoolPref("debug");
this._remember = this._prefBranch.getBoolPref("rememberSignons");
// Get constructor for nsILoginInfo
this._nsLoginInfo = new Components.Constructor(
"@mozilla.org/login-manager/loginInfo;1", Ci.nsILoginInfo);
// Form submit observer checks forms for new logins and pw changes.
Services.obs.addObserver(this._observer, "earlyformsubmit", false);
Services.obs.addObserver(this._observer, "xpcom-shutdown", false);
// WebProgressListener for getting notification of new doc loads.
var progress = Cc["@mozilla.org/docloaderservice;1"].
getService(Ci.nsIWebProgress);
progress.addProgressListener(this._webProgressListener,
Ci.nsIWebProgress.NOTIFY_STATE_DOCUMENT);
},
/* ---------- Utility objects ---------- */
/*
* _observer object
*
* Internal utility object, implements the nsIObserver interface.
* Used to receive notification for: form submission, preference changes.
*/
_observer : {
_pwmgr : null,
QueryInterface : XPCOMUtils.generateQI([Ci.nsIObserver,
Ci.nsIFormSubmitObserver,
Ci.nsISupportsWeakReference]),
// nsFormSubmitObserver
notify : function (formElement, aWindow, actionURI) {
log("observer notified for form submission.");
// We're invoked before the content's |onsubmit| handlers, so we
// can grab form data before it might be modified (see bug 257781).
try {
this._pwmgr._onFormSubmit(formElement);
} catch (e) {
log("Caught error in onFormSubmit:", e);
}
return true; // Always return true, or form submit will be canceled.
},
// nsObserver
observe : function (subject, topic, data) {
if (topic == "nsPref:changed") {
var prefName = data;
log("got change to", prefName, "preference");
if (prefName == "debug") {
debug = this._pwmgr._prefBranch.getBoolPref("debug");
} else if (prefName == "rememberSignons") {
this._pwmgr._remember =
this._pwmgr._prefBranch.getBoolPref("rememberSignons");
} else {
log("Oops! Pref not handled, change ignored.");
}
} else if (topic == "xpcom-shutdown") {
for (let i in this._pwmgr) {
try {
this._pwmgr[i] = null;
} catch(ex) {}
}
this._pwmgr = null;
} else {
log("Oops! Unexpected notification:", topic);
}
}
},
/*
* _webProgressListener object
*
* Internal utility object, implements nsIWebProgressListener interface.
* This is attached to the document loader service, so we get
* notifications about all page loads.
*/
_webProgressListener : {
_pwmgr : null,
_domEventListener : null,
QueryInterface : XPCOMUtils.generateQI([Ci.nsIWebProgressListener,
Ci.nsISupportsWeakReference]),
onStateChange : function (aWebProgress, aRequest,
aStateFlags, aStatus) {
// STATE_START is too early, doc is still the old page.
if (!(aStateFlags & Ci.nsIWebProgressListener.STATE_TRANSFERRING))
return;
if (!this._pwmgr._remember)
return;
var domWin = aWebProgress.DOMWindow;
var domDoc = domWin.document;
// Only process things which might have HTML forms.
if (!(domDoc instanceof Ci.nsIDOMHTMLDocument))
return;
if (debug) {
let requestName = "(null)";
if (aRequest) {
try {
requestName = aRequest.name;
} catch (ex if ex.result == Components.results.NS_ERROR_NOT_IMPLEMENTED) {
// do nothing - leave requestName = "(null)"
}
}
log("onStateChange accepted: req =", requestName);
}
// Fastback doesn't fire DOMContentLoaded, so process forms now.
if (aStateFlags & Ci.nsIWebProgressListener.STATE_RESTORING) {
log("onStateChange: restoring document");
return this._pwmgr._fillDocument(domDoc);
}
// Add event listener to process page when DOM is complete.
domDoc.addEventListener("DOMContentLoaded",
this._domEventListener, false);
return;
},
// stubs for the nsIWebProgressListener interfaces which we don't use.
onProgressChange : function() { throw "Unexpected onProgressChange"; },
onLocationChange : function() { throw "Unexpected onLocationChange"; },
onStatusChange : function() { throw "Unexpected onStatusChange"; },
onSecurityChange : function() { throw "Unexpected onSecurityChange"; }
},
/*
* _domEventListener object
*
* Internal utility object, implements nsIDOMEventListener
* Used to catch certain DOM events needed to properly implement form fill.
*/
_domEventListener : {
_pwmgr : null,
QueryInterface : XPCOMUtils.generateQI([Ci.nsIDOMEventListener,
Ci.nsISupportsWeakReference]),
handleEvent : function (event) {
if (!event.isTrusted)
return;
log("domEventListener: got event", event.type);
switch (event.type) {
case "DOMContentLoaded":
event.target.removeEventListener(event.type, this, false);
this._pwmgr._fillDocument(event.target);
return;
case "DOMAutoComplete":
case "blur":
var acInputField = event.target;
var acForm = acInputField.form;
// If the username is blank, bail out now -- we don't want
// fillForm() to try filling in a login without a username
// to filter on (bug 471906).
if (!acInputField.value)
return;
// Make sure the username field fillForm will use is the
// same field as the autocomplete was activated on. If
// not, the DOM has been altered and we'll just give up.
var [usernameField, passwordField, ignored] =
this._pwmgr._getFormFields(acForm, false);
if (usernameField == acInputField && passwordField) {
// This shouldn't trigger a master password prompt,
// because we don't attach to the input until after we
// successfully obtain logins for the form.
this._pwmgr._fillForm(acForm, true, true, true, null);
} else {
log("Oops, form changed before AC invoked");
}
return;
default:
log("Oops! This event unexpected.");
return;
}
}
},
/* ---------- Primary Public interfaces ---------- */
/*
* addLogin
*
* Add a new login to login storage.
*/
addLogin : function (login) {
// Sanity check the login
if (login.hostname == null || login.hostname.length == 0)
throw "Can't add a login with a null or empty hostname.";
// For logins w/o a username, set to "", not null.
if (login.username == null)
throw "Can't add a login with a null username.";
if (login.password == null || login.password.length == 0)
throw "Can't add a login with a null or empty password.";
if (login.formSubmitURL || login.formSubmitURL == "") {
// We have a form submit URL. Can't have a HTTP realm.
if (login.httpRealm != null)
throw "Can't add a login with both a httpRealm and formSubmitURL.";
} else if (login.httpRealm) {
// We have a HTTP realm. Can't have a form submit URL.
if (login.formSubmitURL != null)
throw "Can't add a login with both a httpRealm and formSubmitURL.";
} else {
// Need one or the other!
throw "Can't add a login without a httpRealm or formSubmitURL.";
}
// Look for an existing entry.
var logins = this.findLogins({}, login.hostname, login.formSubmitURL,
login.httpRealm);
if (logins.some(function(l) login.matches(l, true)))
throw "This login already exists.";
log("Adding login");
return this._storage.addLogin(login);
},
/*
* removeLogin
*
* Remove the specified login from the stored logins.
*/
removeLogin : function (login) {
log("Removing login");
return this._storage.removeLogin(login);
},
/*
* modifyLogin
*
* Change the specified login to match the new login.
*/
modifyLogin : function (oldLogin, newLogin) {
log("Modifying login");
return this._storage.modifyLogin(oldLogin, newLogin);
},
/*
* getAllLogins
*
* Get a dump of all stored logins. Used by the login manager UI.
*
* |count| is only needed for XPCOM.
*
* Returns an array of logins. If there are no logins, the array is empty.
*/
getAllLogins : function (count) {
log("Getting a list of all logins");
return this._storage.getAllLogins(count);
},
/*
* removeAllLogins
*
* Remove all stored logins.
*/
removeAllLogins : function () {
log("Removing all logins");
this._storage.removeAllLogins();
},
/*
* getAllDisabledHosts
*
* Get a list of all hosts for which logins are disabled.
*
* |count| is only needed for XPCOM.
*
* Returns an array of disabled logins. If there are no disabled logins,
* the array is empty.
*/
getAllDisabledHosts : function (count) {
log("Getting a list of all disabled hosts");
return this._storage.getAllDisabledHosts(count);
},
/*
* findLogins
*
* Search for the known logins for entries matching the specified criteria.
*/
findLogins : function (count, hostname, formSubmitURL, httpRealm) {
log("Searching for logins matching host:", hostname,
"formSubmitURL:", formSubmitURL, "httpRealm:", httpRealm);
return this._storage.findLogins(count, hostname, formSubmitURL,
httpRealm);
},
/*
* 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) {
log("Searching for logins");
return this._storage.searchLogins(count, matchData);
},
/*
* countLogins
*
* Search for the known logins for entries matching the specified criteria,
* returns only the count.
*/
countLogins : function (hostname, formSubmitURL, httpRealm) {
log("Counting logins matching host:", hostname,
"formSubmitURL:", formSubmitURL, "httpRealm:", httpRealm);
return this._storage.countLogins(hostname, formSubmitURL, httpRealm);
},
/*
* uiBusy
*/
get uiBusy() {
return this._storage.uiBusy;
},
/*
* isLoggedIn
*/
get isLoggedIn() {
return this._storage.isLoggedIn;
},
/*
* getLoginSavingEnabled
*
* Check to see if user has disabled saving logins for the host.
*/
getLoginSavingEnabled : function (host) {
log("Checking if logins to", host, "can be saved.");
if (!this._remember)
return false;
return this._storage.getLoginSavingEnabled(host);
},
/*
* setLoginSavingEnabled
*
* Enable or disable storing logins for the specified host.
*/
setLoginSavingEnabled : function (hostname, enabled) {
// Nulls won't round-trip with getAllDisabledHosts().
if (hostname.indexOf("\0") != -1)
throw "Invalid hostname";
log("Login saving for", hostname, "now enabled?", enabled);
return this._storage.setLoginSavingEnabled(hostname, enabled);
},
/*
* autoCompleteSearch
*
* Yuck. This is called directly by satchel:
* nsFormFillController::StartSearch()
* [toolkit/components/satchel/src/nsFormFillController.cpp]
*
* We really ought to have a simple way for code to register an
* auto-complete provider, and not have satchel calling pwmgr directly.
*/
autoCompleteSearch : function (aSearchString, aPreviousResult, aElement) {
// aPreviousResult & aResult are nsIAutoCompleteResult,
// aElement is nsIDOMHTMLInputElement
if (!this._remember)
return null;
log("AutoCompleteSearch invoked. Search is:", aSearchString);
var result = null;
if (aPreviousResult &&
aSearchString.substr(0, aPreviousResult.searchString.length) == aPreviousResult.searchString) {
log("Using previous autocomplete result");
result = aPreviousResult;
result.wrappedJSObject.searchString = aSearchString;
// We have a list of results for a shorter search string, so just
// filter them further based on the new search string.
// Count backwards, because result.matchCount is decremented
// when we remove an entry.
for (var i = result.matchCount - 1; i >= 0; i--) {
var match = result.getValueAt(i);
// Remove results that are too short, or have different prefix.
if (aSearchString.length > match.length ||
aSearchString.toLowerCase() !=
match.substr(0, aSearchString.length).toLowerCase())
{
log("Removing autocomplete entry:", match);
result.removeValueAt(i, false);
}
}
} else {
log("Creating new autocomplete search result.");
var doc = aElement.ownerDocument;
var origin = this._getPasswordOrigin(doc.documentURI);
var actionOrigin = this._getActionOrigin(aElement.form);
// This shouldn't trigger a master password prompt, because we
// don't attach to the input until after we successfully obtain
// logins for the form.
var logins = this.findLogins({}, origin, actionOrigin, null);
var matchingLogins = [];
// Filter out logins that don't match the search prefix. Also
// filter logins without a username, since that's confusing to see
// in the dropdown and we can't autocomplete them anyway.
for (i = 0; i < logins.length; i++) {
var username = logins[i].username.toLowerCase();
if (username &&
aSearchString.length <= username.length &&
aSearchString.toLowerCase() ==
username.substr(0, aSearchString.length))
{
matchingLogins.push(logins[i]);
}
}
log(matchingLogins.length, "autocomplete logins avail.");
result = new UserAutoCompleteResult(aSearchString, matchingLogins);
}
return result;
},
/* ------- Internal methods / callbacks for document integration ------- */
/*
* _getPasswordFields
*
* Returns an array of password field elements for the specified form.
* If no pw fields are found, or if more than 3 are found, then null
* is returned.
*
* skipEmptyFields can be set to ignore password fields with no value.
*/
_getPasswordFields : function (form, skipEmptyFields) {
// Locate the password fields in the form.
var pwFields = [];
for (var i = 0; i < form.elements.length; i++) {
var element = form.elements[i];
if (!(element instanceof Ci.nsIDOMHTMLInputElement) ||
element.type != "password")
continue;
if (skipEmptyFields && !element.value)
continue;
pwFields[pwFields.length] = {
index : i,
element : element
};
}
// If too few or too many fields, bail out.
if (pwFields.length == 0) {
log("(form ignored -- no password fields.)");
return null;
} else if (pwFields.length > 3) {
log("(form ignored -- too many password fields. [ got",
pwFields.length, "])");
return null;
}
return pwFields;
},
/*
* _getFormFields
*
* Returns the username and password fields found in the form.
* Can handle complex forms by trying to figure out what the
* relevant fields are.
*
* Returns: [usernameField, newPasswordField, oldPasswordField]
*
* usernameField may be null.
* newPasswordField will always be non-null.
* oldPasswordField may be null. If null, newPasswordField is just
* "theLoginField". If not null, the form is apparently a
* change-password field, with oldPasswordField containing the password
* that is being changed.
*/
_getFormFields : function (form, isSubmission) {
var usernameField = null;
// Locate the password field(s) in the form. Up to 3 supported.
// If there's no password field, there's nothing for us to do.
var pwFields = this._getPasswordFields(form, isSubmission);
if (!pwFields)
return [null, null, null];
// Locate the username field in the form by searching backwards
// from the first passwordfield, assume the first text field is the
// username. We might not find a username field if the user is
// already logged in to the site.
for (var i = pwFields[0].index - 1; i >= 0; i--) {
var element = form.elements[i];
var fieldType = (element.hasAttribute("type") ?
element.getAttribute("type").toLowerCase() :
element.type);
if (fieldType == "text" ||
fieldType == "email" ||
fieldType == "url" ||
fieldType == "tel" ||
fieldType == "number") {
usernameField = element;
break;
}
}
if (!usernameField)
log("(form -- no username field found)");
// If we're not submitting a form (it's a page load), there are no
// password field values for us to use for identifying fields. So,
// just assume the first password field is the one to be filled in.
if (!isSubmission || pwFields.length == 1)
return [usernameField, pwFields[0].element, null];
// Try to figure out WTF is in the form based on the password values.
var oldPasswordField, newPasswordField;
var pw1 = pwFields[0].element.value;
var pw2 = pwFields[1].element.value;
var pw3 = (pwFields[2] ? pwFields[2].element.value : null);
if (pwFields.length == 3) {
// Look for two identical passwords, that's the new password
if (pw1 == pw2 && pw2 == pw3) {
// All 3 passwords the same? Weird! Treat as if 1 pw field.
newPasswordField = pwFields[0].element;
oldPasswordField = null;
} else if (pw1 == pw2) {
newPasswordField = pwFields[0].element;
oldPasswordField = pwFields[2].element;
} else if (pw2 == pw3) {
oldPasswordField = pwFields[0].element;
newPasswordField = pwFields[2].element;
} else if (pw1 == pw3) {
// A bit odd, but could make sense with the right page layout.
newPasswordField = pwFields[0].element;
oldPasswordField = pwFields[1].element;
} else {
// We can't tell which of the 3 passwords should be saved.
log("(form ignored -- all 3 pw fields differ)");
return [null, null, null];
}
} else { // pwFields.length == 2
if (pw1 == pw2) {
// Treat as if 1 pw field
newPasswordField = pwFields[0].element;
oldPasswordField = null;
} else {
// Just assume that the 2nd password is the new password
oldPasswordField = pwFields[0].element;
newPasswordField = pwFields[1].element;
}
}
return [usernameField, newPasswordField, oldPasswordField];
},
/*
* _isAutoCompleteDisabled
*
* Returns true if the page requests autocomplete be disabled for the
* specified form input.
*/
_isAutocompleteDisabled : function (element) {
if (element && element.hasAttribute("autocomplete") &&
element.getAttribute("autocomplete").toLowerCase() == "off")
return true;
return false;
},
/*
* _onFormSubmit
*
* Called by the our observer when notified of a form submission.
* [Note that this happens before any DOM onsubmit handlers are invoked.]
* Looks for a password change in the submitted form, so we can update
* our stored password.
*/
_onFormSubmit : function (form) {
// local helper function
function getPrompter(aWindow) {
var prompterSvc = Cc["@mozilla.org/login-manager/prompter;1"].
createInstance(Ci.nsILoginManagerPrompter);
prompterSvc.init(aWindow);
return prompterSvc;
}
var doc = form.ownerDocument;
var win = doc.defaultView;
if (PrivateBrowsingUtils.isWindowPrivate(win)) {
// We won't do anything in private browsing mode anyway,
// so there's no need to perform further checks.
log("(form submission ignored in private browsing mode)");
return;
}
// If password saving is disabled (globally or for host), bail out now.
if (!this._remember)
return;
var hostname = this._getPasswordOrigin(doc.documentURI);
if (!hostname) {
log("(form submission ignored -- invalid hostname)");
return;
}
var formSubmitURL = this._getActionOrigin(form)
if (!this.getLoginSavingEnabled(hostname)) {
log("(form submission ignored -- saving is disabled for:", hostname, ")");
return;
}
// Get the appropriate fields from the form.
var [usernameField, newPasswordField, oldPasswordField] =
this._getFormFields(form, true);
// Need at least 1 valid password field to do anything.
if (newPasswordField == null)
return;
// Check for autocomplete=off attribute. We don't use it to prevent
// autofilling (for existing logins), but won't save logins when it's
// present.
// XXX spin out a bug that we don't update timeLastUsed in this case?
if (this._isAutocompleteDisabled(form) ||
this._isAutocompleteDisabled(usernameField) ||
this._isAutocompleteDisabled(newPasswordField) ||
this._isAutocompleteDisabled(oldPasswordField)) {
log("(form submission ignored -- autocomplete=off found)");
return;
}
var formLogin = new this._nsLoginInfo();
formLogin.init(hostname, formSubmitURL, null,
(usernameField ? usernameField.value : ""),
newPasswordField.value,
(usernameField ? usernameField.name : ""),
newPasswordField.name);
// If we didn't find a username field, but seem to be changing a
// password, allow the user to select from a list of applicable
// logins to update the password for.
if (!usernameField && oldPasswordField) {
var logins = this.findLogins({}, hostname, formSubmitURL, null);
if (logins.length == 0) {
// Could prompt to save this as a new password-only login.
// This seems uncommon, and might be wrong, so ignore.
log("(no logins for this host -- pwchange ignored)");
return;
}
var prompter = getPrompter(win);
if (logins.length == 1) {
var oldLogin = logins[0];
formLogin.username = oldLogin.username;
formLogin.usernameField = oldLogin.usernameField;
prompter.promptToChangePassword(oldLogin, formLogin);
} else {
prompter.promptToChangePasswordWithUsernames(
logins, logins.length, formLogin);
}
return;
}
// Look for an existing login that matches the form login.
var existingLogin = null;
var logins = this.findLogins({}, hostname, formSubmitURL, null);
for (var i = 0; i < logins.length; i++) {
var same, login = logins[i];
// If one login has a username but the other doesn't, ignore
// the username when comparing and only match if they have the
// same password. Otherwise, compare the logins and match even
// if the passwords differ.
if (!login.username && formLogin.username) {
var restoreMe = formLogin.username;
formLogin.username = "";
same = formLogin.matches(login, false);
formLogin.username = restoreMe;
} else if (!formLogin.username && login.username) {
formLogin.username = login.username;
same = formLogin.matches(login, false);
formLogin.username = ""; // we know it's always blank.
} else {
same = formLogin.matches(login, true);
}
if (same) {
existingLogin = login;
break;
}
}
if (existingLogin) {
log("Found an existing login matching this form submission");
// Change password if needed.
if (existingLogin.password != formLogin.password) {
log("...passwords differ, prompting to change.");
prompter = getPrompter(win);
prompter.promptToChangePassword(existingLogin, formLogin);
} else {
// Update the lastUsed timestamp.
var propBag = Cc["@mozilla.org/hash-property-bag;1"].
createInstance(Ci.nsIWritablePropertyBag);
propBag.setProperty("timeLastUsed", Date.now());
propBag.setProperty("timesUsedIncrement", 1);
this.modifyLogin(existingLogin, propBag);
}
return;
}
// Prompt user to save login (via dialog or notification bar)
prompter = getPrompter(win);
prompter.promptToSavePassword(formLogin);
},
/*
* _getPasswordOrigin
*
* Get the parts of the URL we want for identification.
*/
_getPasswordOrigin : function (uriString, allowJS) {
var realm = "";
try {
var uri = Services.io.newURI(uriString, null, null);
if (allowJS && uri.scheme == "javascript")
return "javascript:"
realm = uri.scheme + "://" + uri.host;
// If the URI explicitly specified a port, only include it when
// it's not the default. (We never want "http://foo.com:80")
var port = uri.port;
if (port != -1) {
var handler = Services.io.getProtocolHandler(uri.scheme);
if (port != handler.defaultPort)
realm += ":" + port;
}
} catch (e) {
// bug 159484 - disallow url types that don't support a hostPort.
// (although we handle "javascript:..." as a special case above.)
log("Couldn't parse origin for", uriString);
realm = null;
}
return realm;
},
_getActionOrigin : function (form) {
var uriString = form.action;
// A blank or missing action submits to where it came from.
if (uriString == "")
uriString = form.baseURI; // ala bug 297761
return this._getPasswordOrigin(uriString, true);
},
/*
* _fillDocument
*
* Called when a page has loaded. For each form in the document,
* we check to see if it can be filled with a stored login.
*/
_fillDocument : function (doc) {
var forms = doc.forms;
if (!forms || forms.length == 0)
return;
var formOrigin = this._getPasswordOrigin(doc.documentURI);
// If there are no logins for this site, bail out now.
if (!this.countLogins(formOrigin, "", null))
return;
// If we're currently displaying a master password prompt, defer
// processing this document until the user handles the prompt.
if (this.uiBusy) {
log("deferring fillDoc for", doc.documentURI);
let self = this;
let observer = {
QueryInterface: XPCOMUtils.generateQI([Ci.nsIObserver, Ci.nsISupportsWeakReference]),
observe: function (subject, topic, data) {
log("Got deferred fillDoc notification:", topic);
// Only run observer once.
Services.obs.removeObserver(this, "passwordmgr-crypto-login");
Services.obs.removeObserver(this, "passwordmgr-crypto-loginCanceled");
if (topic == "passwordmgr-crypto-loginCanceled")
return;
self._fillDocument(doc);
},
handleEvent : function (event) {
// Not expected to be called
}
};
// Trickyness follows: We want an observer, but don't want it to
// cause leaks. So add the observer with a weak reference, and use
// a dummy event listener (a strong reference) to keep it alive
// until the document is destroyed.
Services.obs.addObserver(observer, "passwordmgr-crypto-login", true);
Services.obs.addObserver(observer, "passwordmgr-crypto-loginCanceled", true);
doc.addEventListener("mozCleverClosureHack", observer, false);
return;
}
log("fillDocument processing", forms.length, "forms on", doc.documentURI);
var autofillForm = !PrivateBrowsingUtils.isWindowPrivate(doc.defaultView) &&
this._prefBranch.getBoolPref("autofillForms");
var previousActionOrigin = null;
var foundLogins = null;
// Limit the number of forms we try to fill. If there are too many
// forms, just fill some at the beginning and end of the page.
const MAX_FORMS = 40; // assumed to be an even number
var skip_from = -1, skip_to = -1;
if (forms.length > MAX_FORMS) {
log("fillDocument limiting number of forms filled to", MAX_FORMS);
let chunk_size = MAX_FORMS / 2;
skip_from = chunk_size;
skip_to = forms.length - chunk_size;
}
for (var i = 0; i < forms.length; i++) {
// Skip some in the middle of the document if there were too many.
if (i == skip_from)
i = skip_to;
var form = forms[i];
// Only the actionOrigin might be changing, so if it's the same
// as the last form on the page we can reuse the same logins.
var actionOrigin = this._getActionOrigin(form);
if (actionOrigin != previousActionOrigin) {
foundLogins = null;
previousActionOrigin = actionOrigin;
}
log("_fillDocument processing form[", i, "]");
foundLogins = this._fillForm(form, autofillForm, false, false, foundLogins)[1];
} // foreach form
},
/*
* _fillform
*
* Fill the form with login information if we can find it. This will find
* an array of logins if not given any, otherwise it will use the logins
* passed in. The logins are returned so they can be reused for
* optimization. Success of action is also returned in format
* [success, foundLogins]. autofillForm denotes if we should fill the form
* in automatically, ignoreAutocomplete denotes if we should ignore
* autocomplete=off attributes, and foundLogins is an array of nsILoginInfo
* for optimization
*/
_fillForm : function (form, autofillForm, ignoreAutocomplete,
clobberPassword, foundLogins) {
// Heuristically determine what the user/pass fields are
// We do this before checking to see if logins are stored,
// so that the user isn't prompted for a master password
// without need.
var [usernameField, passwordField, ignored] =
this._getFormFields(form, false);
// Need a valid password field to do anything.
if (passwordField == null)
return [false, foundLogins];
// If the fields are disabled or read-only, there's nothing to do.
if (passwordField.disabled || passwordField.readOnly ||
usernameField && (usernameField.disabled ||
usernameField.readOnly)) {
log("not filling form, login fields disabled");
return [false, foundLogins];
}
// Need to get a list of logins if we weren't given them
if (foundLogins == null) {
var formOrigin =
this._getPasswordOrigin(form.ownerDocument.documentURI);
var actionOrigin = this._getActionOrigin(form);
foundLogins = this.findLogins({}, formOrigin, actionOrigin, null);
log("found", foundLogins.length, "matching logins.");
} else {
log("reusing logins from last form.");
}
// Discard logins which have username/password values that don't
// fit into the fields (as specified by the maxlength attribute).
// The user couldn't enter these values anyway, and it helps
// with sites that have an extra PIN to be entered (bug 391514)
var maxUsernameLen = Number.MAX_VALUE;
var maxPasswordLen = Number.MAX_VALUE;
// If attribute wasn't set, default is -1.
if (usernameField && usernameField.maxLength >= 0)
maxUsernameLen = usernameField.maxLength;
if (passwordField.maxLength >= 0)
maxPasswordLen = passwordField.maxLength;
var logins = foundLogins.filter(function (l) {
var fit = (l.username.length <= maxUsernameLen &&
l.password.length <= maxPasswordLen);
if (!fit)
log("Ignored", l.username, "login: won't fit");
return fit;
}, this);
// Nothing to do if we have no matching logins available.
if (logins.length == 0)
return [false, foundLogins];
// The reason we didn't end up filling the form, if any. We include
// this in the formInfo object we send with the passwordmgr-found-logins
// notification. See the _notifyFoundLogins docs for possible values.
var didntFillReason = null;
// Attach autocomplete stuff to the username field, if we have
// one. This is normally used to select from multiple accounts,
// but even with one account we should refill if the user edits.
if (usernameField)
this._attachToInput(usernameField);
// Don't clobber an existing password.
if (passwordField.value && !clobberPassword) {
didntFillReason = "existingPassword";
this._notifyFoundLogins(didntFillReason, usernameField,
passwordField, foundLogins, null);
return [false, foundLogins];
}
// If the form has an autocomplete=off attribute in play, don't
// fill in the login automatically. We check this after attaching
// the autocomplete stuff to the username field, so the user can
// still manually select a login to be filled in.
var isFormDisabled = false;
if (!ignoreAutocomplete &&
(this._isAutocompleteDisabled(form) ||
this._isAutocompleteDisabled(usernameField) ||
this._isAutocompleteDisabled(passwordField))) {
isFormDisabled = true;
log("form not filled, has autocomplete=off");
}
// Variable such that we reduce code duplication and can be sure we
// should be firing notifications if and only if we can fill the form.
var selectedLogin = null;
if (usernameField && usernameField.value) {
// If username was specified in the form, only fill in the
// password if we find a matching login.
var username = usernameField.value.toLowerCase();
let matchingLogins = logins.filter(function(l)
l.username.toLowerCase() == username);
if (matchingLogins.length) {
selectedLogin = matchingLogins[0];
} else {
didntFillReason = "existingUsername";
log("Password not filled. None of the stored logins match the username already present.");
}
} else if (logins.length == 1) {
selectedLogin = logins[0];
} else {
// We have multiple logins. Handle a special case here, for sites
// which have a normal user+pass login *and* a password-only login
// (eg, a PIN). Prefer the login that matches the type of the form
// (user+pass or pass-only) when there's exactly one that matches.
let matchingLogins;
if (usernameField)
matchingLogins = logins.filter(function(l) l.username);
else
matchingLogins = logins.filter(function(l) !l.username);
if (matchingLogins.length == 1) {
selectedLogin = matchingLogins[0];
} else {
didntFillReason = "multipleLogins";
log("Multiple logins for form, so not filling any.");
}
}
var didFillForm = false;
if (selectedLogin && autofillForm && !isFormDisabled) {
// Fill the form
if (usernameField)
usernameField.value = selectedLogin.username;
passwordField.value = selectedLogin.password;
didFillForm = true;
} else if (selectedLogin && !autofillForm) {
// For when autofillForm is false, but we still have the information
// to fill a form, we notify observers.
didntFillReason = "noAutofillForms";
Services.obs.notifyObservers(form, "passwordmgr-found-form", didntFillReason);
log("autofillForms=false but form can be filled; notified observers");
} else if (selectedLogin && isFormDisabled) {
// For when autocomplete is off, but we still have the information
// to fill a form, we notify observers.
didntFillReason = "autocompleteOff";
Services.obs.notifyObservers(form, "passwordmgr-found-form", didntFillReason);
log("autocomplete=off but form can be filled; notified observers");
}
this._notifyFoundLogins(didntFillReason, usernameField, passwordField,
foundLogins, selectedLogin);
return [didFillForm, foundLogins];
},
/**
* Notify observers about an attempt to fill a form that resulted in some
* saved logins being found for the form.
*
* This does not get called if the login manager attempts to fill a form
* but does not find any saved logins. It does, however, get called when
* the login manager does find saved logins whether or not it actually
* fills the form with one of them.
*
* @param didntFillReason {String}
* the reason the login manager didn't fill the form, if any;
* if the value of this parameter is null, then the form was filled;
* otherwise, this parameter will be one of these values:
* existingUsername: the username field already contains a username
* that doesn't match any stored usernames
* existingPassword: the password field already contains a password
* autocompleteOff: autocomplete has been disabled for the form
* or its username or password fields
* multipleLogins: we have multiple logins for the form
* noAutofillForms: the autofillForms pref is set to false
*
* @param usernameField {HTMLInputElement}
* the username field detected by the login manager, if any;
* otherwise null
*
* @param passwordField {HTMLInputElement}
* the password field detected by the login manager
*
* @param foundLogins {Array}
* an array of nsILoginInfos that can be used to fill the form
*
* @param selectedLogin {nsILoginInfo}
* the nsILoginInfo that was/would be used to fill the form, if any;
* otherwise null; whether or not it was actually used depends on
* the value of the didntFillReason parameter
*/
_notifyFoundLogins : function (didntFillReason, usernameField,
passwordField, foundLogins, selectedLogin) {
// We need .setProperty(), which is a method on the original
// nsIWritablePropertyBag. Strangley enough, nsIWritablePropertyBag2
// doesn't inherit from that, so the additional QI is needed.
let formInfo = Cc["@mozilla.org/hash-property-bag;1"].
createInstance(Ci.nsIWritablePropertyBag2).
QueryInterface(Ci.nsIWritablePropertyBag);
formInfo.setPropertyAsACString("didntFillReason", didntFillReason);
formInfo.setPropertyAsInterface("usernameField", usernameField);
formInfo.setPropertyAsInterface("passwordField", passwordField);
formInfo.setProperty("foundLogins", foundLogins.concat());
formInfo.setPropertyAsInterface("selectedLogin", selectedLogin);
Services.obs.notifyObservers(formInfo, "passwordmgr-found-logins", null);
},
/*
* fillForm
*
* Fill the form with login information if we can find it.
*/
fillForm : function (form) {
log("fillForm processing form[ id:", form.id, "]");
return this._fillForm(form, true, true, false, null)[0];
},
/*
* _attachToInput
*
* Hooks up autocomplete support to a username field, to allow
* a user editing the field to select an existing login and have
* the password field filled in.
*/
_attachToInput : function (element) {
log("attaching autocomplete stuff");
element.addEventListener("blur",
this._domEventListener, false);
element.addEventListener("DOMAutoComplete",
this._domEventListener, false);
this._formFillService.markAsLoginManagerField(element);
}
}; // end of LoginManager implementation
// nsIAutoCompleteResult implementation
function UserAutoCompleteResult (aSearchString, matchingLogins) {
function loginSort(a,b) {
var userA = a.username.toLowerCase();
var userB = b.username.toLowerCase();
if (userA < userB)
return -1;
if (userB > userA)
return 1;
return 0;
};
this.searchString = aSearchString;
this.logins = matchingLogins.sort(loginSort);
this.matchCount = matchingLogins.length;
if (this.matchCount > 0) {
this.searchResult = Ci.nsIAutoCompleteResult.RESULT_SUCCESS;
this.defaultIndex = 0;
}
}
UserAutoCompleteResult.prototype = {
QueryInterface : XPCOMUtils.generateQI([Ci.nsIAutoCompleteResult,
Ci.nsISupportsWeakReference]),
// private
logins : null,
// Allow autoCompleteSearch to get at the JS object so it can
// modify some readonly properties for internal use.
get wrappedJSObject() {
return this;
},
// Interfaces from idl...
searchString : null,
searchResult : Ci.nsIAutoCompleteResult.RESULT_NOMATCH,
defaultIndex : -1,
errorDescription : "",
matchCount : 0,
getValueAt : function (index) {
if (index < 0 || index >= this.logins.length)
throw "Index out of range.";
return this.logins[index].username;
},
getLabelAt: function(index) {
return this.getValueAt(index);
},
getCommentAt : function (index) {
return "";
},
getStyleAt : function (index) {
return "";
},
getImageAt : function (index) {
return "";
},
removeValueAt : function (index, removeFromDB) {
if (index < 0 || index >= this.logins.length)
throw "Index out of range.";
var [removedLogin] = this.logins.splice(index, 1);
this.matchCount--;
if (this.defaultIndex > this.logins.length)
this.defaultIndex--;
if (removeFromDB) {
var pwmgr = Cc["@mozilla.org/login-manager;1"].
getService(Ci.nsILoginManager);
pwmgr.removeLogin(removedLogin);
}
}
};
this.NSGetFactory = XPCOMUtils.generateNSGetFactory([LoginManager]);