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      1 /* ***** BEGIN LICENSE BLOCK *****
      2 * Version: MPL 1.1/GPL 2.0/LGPL 2.1
      3 *
      4 * The contents of this file are subject to the Mozilla Public License Version
      5 * 1.1 (the "License"); you may not use this file except in compliance with
      6 * the License. You may obtain a copy of the License at
      7 * http://www.mozilla.org/MPL/
      8 *
      9 * Software distributed under the License is distributed on an "AS IS" basis,
     10 * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
     11 * for the specific language governing rights and limitations under the
     12 * License.
     13 *
     14 * The Original Code is Mozilla Password Manager.
     15 *
     16 * The Initial Developer of the Original Code is
     17 * Brian Ryner.
     18 * Portions created by the Initial Developer are Copyright (C) 2003
     19 * the Initial Developer. All Rights Reserved.
     20 *
     21 * Contributor(s):
     22 *  Brian Ryner <bryner (at) brianryner.com>
     23 *
     24 * Alternatively, the contents of this file may be used under the terms of
     25 * either the GNU General Public License Version 2 or later (the "GPL"), or
     26 * the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
     27 * in which case the provisions of the GPL or the LGPL are applicable instead
     28 * of those above. If you wish to allow use of your version of this file only
     29 * under the terms of either the GPL or the LGPL, and not to allow others to
     30 * use your version of this file under the terms of the MPL, indicate your
     31 * decision by deleting the provisions above and replace them with the notice
     32 * and other provisions required by the GPL or the LGPL. If you do not delete
     33 * the provisions above, a recipient may use your version of this file under
     34 * the terms of any one of the MPL, the GPL or the LGPL.
     35 *
     36 * ***** END LICENSE BLOCK ***** */
     37 
     38 // Helper to WebPasswordFormData to do the locating of username/password
     39 // fields.
     40 // This method based on Firefox2 code in
     41 //   toolkit/components/passwordmgr/base/nsPasswordManager.cpp
     42 
     43 #include "config.h"
     44 #include "WebPasswordFormUtils.h"
     45 
     46 #include "HTMLNames.h"
     47 #include "core/html/HTMLFormElement.h"
     48 #include "core/html/HTMLInputElement.h"
     49 
     50 using namespace WebCore;
     51 
     52 namespace WebKit {
     53 
     54 // Maximum number of password fields we will observe before throwing our
     55 // hands in the air and giving up with a given form.
     56 static const size_t maxPasswords = 3;
     57 
     58 void findPasswordFormFields(HTMLFormElement* form, PasswordFormFields* fields)
     59 {
     60     ASSERT(form);
     61     ASSERT(fields);
     62 
     63     HTMLInputElement* latestInputElement = 0;
     64     const Vector<FormAssociatedElement*>& formElements = form->associatedElements();
     65     for (size_t i = 0; i < formElements.size(); i++) {
     66         if (!formElements[i]->isFormControlElement())
     67             continue;
     68         HTMLFormControlElement* control = toHTMLFormControlElement(formElements[i]);
     69         if (control->isActivatedSubmit())
     70             fields->submit = control;
     71 
     72         if (!control->hasTagName(HTMLNames::inputTag))
     73             continue;
     74 
     75         HTMLInputElement* inputElement = toHTMLInputElement(control);
     76         if (inputElement->isDisabledFormControl())
     77             continue;
     78 
     79         if ((fields->passwords.size() < maxPasswords)
     80             && inputElement->isPasswordField()) {
     81             // We assume that the username is the input element before the
     82             // first password element.
     83             if (fields->passwords.isEmpty() && latestInputElement) {
     84                 fields->userName = latestInputElement;
     85                 // Remove the selected username from alternateUserNames.
     86                 if (!fields->alternateUserNames.isEmpty() && !latestInputElement->value().isEmpty())
     87                     fields->alternateUserNames.removeLast();
     88             }
     89             fields->passwords.append(inputElement);
     90         }
     91 
     92         // Various input types such as text, url, email can be a username field.
     93         if (inputElement->isTextField() && !inputElement->isPasswordField()) {
     94             latestInputElement = inputElement;
     95             // We ignore elements that have no value. Unlike userName, alternateUserNames
     96             // is used only for autofill, not for form identification, and blank autofill
     97             // entries are not useful.
     98             if (!inputElement->value().isEmpty())
     99                 fields->alternateUserNames.append(inputElement->value());
    100         }
    101     }
    102 }
    103 
    104 } // namespace WebKit
    105