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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<HTMLFormControlElement*>& formElements = form->formElements;
     69     for (size_t i = 0; i < formElements.size(); i++) {
     70         HTMLFormControlElement* formElement = formElements[i];
     71         if (formElement->isActivatedSubmit())
     72             fields->submit = formElement;
     73 
     74         if (!formElement->hasLocalName(HTMLNames::inputTag))
     75             continue;
     76 
     77         HTMLInputElement* inputElement = toHTMLInputElement(formElement);
     78         if (!inputElement->isEnabledFormControl())
     79             continue;
     80 
     81         if ((fields->passwords.size() < maxPasswords)
     82             && (inputElement->inputType() == HTMLInputElement::PASSWORD)
     83             && (inputElement->autoComplete())) {
     84             if (fields->passwords.isEmpty())
     85                 firstPasswordIndex = i;
     86             fields->passwords.append(inputElement);
     87         }
     88     }
     89 
     90     if (!fields->passwords.isEmpty()) {
     91         // Then, search backwards for the username field
     92         for (int i = firstPasswordIndex - 1; i >= 0; i--) {
     93             HTMLFormControlElement* formElement = formElements[i];
     94             if (!formElement->hasLocalName(HTMLNames::inputTag))
     95                 continue;
     96 
     97             HTMLInputElement* inputElement = toHTMLInputElement(formElement);
     98             if (!inputElement->isEnabledFormControl())
     99                 continue;
    100 
    101             if ((inputElement->inputType() == HTMLInputElement::TEXT)
    102                 && (inputElement->autoComplete())) {
    103                 fields->userName = inputElement;
    104                 break;
    105             }
    106         }
    107     }
    108 }
    109 
    110 } // namespace WebKit
    111