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@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
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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.
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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
53using namespace WebCore;
54
55namespace 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.
59static const size_t maxPasswords = 3;
60
61void 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