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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 "HTMLFormElement.h"
     47 #include "HTMLInputElement.h"
     48 #include "HTMLNames.h"
     49 #include "KURL.h"
     50 
     51 #include "DOMUtilitiesPrivate.h"
     52 
     53 using namespace WebCore;
     54 
     55 namespace WebKit {
     56 
     57 // Maximum number of password fields we will observe before throwing our
     58 // hands in the air and giving up with a given form.
     59 static const size_t maxPasswords = 3;
     60 
     61 void findPasswordFormFields(HTMLFormElement* form, PasswordFormFields* fields)
     62 {
     63     ASSERT(form);
     64     ASSERT(fields);
     65 
     66     int firstPasswordIndex = 0;
     67     // First, find the password fields and activated submit button
     68     const Vector<FormAssociatedElement*>& formElements = form->associatedElements();
     69     for (size_t i = 0; i < formElements.size(); i++) {
     70         if (!formElements[i]->isFormControlElement())
     71             continue;
     72         HTMLFormControlElement* formElement = static_cast<HTMLFormControlElement*>(formElements[i]);
     73         if (formElement->isActivatedSubmit())
     74             fields->submit = formElement;
     75 
     76         if (!formElement->hasLocalName(HTMLNames::inputTag))
     77             continue;
     78 
     79         HTMLInputElement* inputElement = toHTMLInputElement(formElement);
     80         if (!inputElement->isEnabledFormControl())
     81             continue;
     82 
     83         if ((fields->passwords.size() < maxPasswords)
     84             && inputElement->isPasswordField()
     85             && inputElement->autoComplete()) {
     86             if (fields->passwords.isEmpty())
     87                 firstPasswordIndex = i;
     88             fields->passwords.append(inputElement);
     89         }
     90     }
     91 
     92     if (!fields->passwords.isEmpty()) {
     93         // Then, search backwards for the username field
     94         for (int i = firstPasswordIndex - 1; i >= 0; i--) {
     95             if (!formElements[i]->isFormControlElement())
     96                 continue;
     97             HTMLFormControlElement* formElement = static_cast<HTMLFormControlElement*>(formElements[i]);
     98             if (!formElement->hasLocalName(HTMLNames::inputTag))
     99                 continue;
    100 
    101             HTMLInputElement* inputElement = toHTMLInputElement(formElement);
    102             if (!inputElement->isEnabledFormControl())
    103                 continue;
    104 
    105             // Various input types such as text, url, email can be a username field.
    106             if ((inputElement->isTextField() && !inputElement->isPasswordField())
    107                 && (inputElement->autoComplete())) {
    108                 fields->userName = inputElement;
    109                 break;
    110             }
    111         }
    112     }
    113 }
    114 
    115 } // namespace WebKit
    116