1/*
2 * This file is part of the WebKit project.
3 *
4 * Copyright (C) 2009 Michelangelo De Simone <micdesim@gmail.com>
5 * Copyright (C) 2010 Google Inc. All rights reserved.
6 * Copyright (C) 2018 Apple Inc. All rights reserved.
7 *
8 * This library is free software; you can redistribute it and/or
9 * modify it under the terms of the GNU Library General Public
10 * License as published by the Free Software Foundation; either
11 * version 2 of the License, or (at your option) any later version.
12 *
13 * This library is distributed in the hope that it will be useful,
14 * but WITHOUT ANY WARRANTY; without even the implied warranty of
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
16 * Library General Public License for more details.
17 *
18 * You should have received a copy of the GNU Library General Public License
19 * along with this library; see the file COPYING.LIB. If not, write to
20 * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
21 * Boston, MA 02110-1301, USA.
22 *
23 */
24
25#include "config.h"
26#include "EmailInputType.h"
27
28#include "HTMLInputElement.h"
29#include "HTMLParserIdioms.h"
30#include "InputTypeNames.h"
31#include "LocalizedStrings.h"
32#include <JavaScriptCore/RegularExpression.h>
33#include <wtf/NeverDestroyed.h>
34#include <wtf/text/StringBuilder.h>
35
36namespace WebCore {
37
38// From https://html.spec.whatwg.org/#valid-e-mail-address.
39static const char emailPattern[] = "^[a-zA-Z0-9.!#$%&'*+\\/=?^_`{|}~-]+@[a-zA-Z0-9](?:[a-zA-Z0-9-]{0,61}[a-zA-Z0-9])?(?:\\.[a-zA-Z0-9](?:[a-zA-Z0-9-]{0,61}[a-zA-Z0-9])?)*$";
40
41static bool isValidEmailAddress(const String& address)
42{
43 int addressLength = address.length();
44 if (!addressLength)
45 return false;
46
47 static NeverDestroyed<const JSC::Yarr::RegularExpression> regExp(emailPattern, JSC::Yarr::TextCaseInsensitive);
48
49 int matchLength;
50 int matchOffset = regExp.get().match(address, 0, &matchLength);
51
52 return !matchOffset && matchLength == addressLength;
53}
54
55const AtomicString& EmailInputType::formControlType() const
56{
57 return InputTypeNames::email();
58}
59
60bool EmailInputType::typeMismatchFor(const String& value) const
61{
62 ASSERT(element());
63 if (value.isEmpty())
64 return false;
65 if (!element()->multiple())
66 return !isValidEmailAddress(value);
67 for (auto& address : value.splitAllowingEmptyEntries(',')) {
68 if (!isValidEmailAddress(stripLeadingAndTrailingHTMLSpaces(address)))
69 return true;
70 }
71 return false;
72}
73
74bool EmailInputType::typeMismatch() const
75{
76 ASSERT(element());
77 return typeMismatchFor(element()->value());
78}
79
80String EmailInputType::typeMismatchText() const
81{
82 ASSERT(element());
83 return element()->multiple() ? validationMessageTypeMismatchForMultipleEmailText() : validationMessageTypeMismatchForEmailText();
84}
85
86bool EmailInputType::isEmailField() const
87{
88 return true;
89}
90
91bool EmailInputType::supportsSelectionAPI() const
92{
93 return false;
94}
95
96String EmailInputType::sanitizeValue(const String& proposedValue) const
97{
98 String noLineBreakValue = proposedValue.removeCharacters(isHTMLLineBreak);
99 ASSERT(element());
100 if (!element()->multiple())
101 return stripLeadingAndTrailingHTMLSpaces(noLineBreakValue);
102 Vector<String> addresses = noLineBreakValue.splitAllowingEmptyEntries(',');
103 StringBuilder strippedValue;
104 for (unsigned i = 0; i < addresses.size(); ++i) {
105 if (i > 0)
106 strippedValue.append(',');
107 strippedValue.append(stripLeadingAndTrailingHTMLSpaces(addresses[i]));
108 }
109 return strippedValue.toString();
110}
111
112} // namespace WebCore
113