1/*
2 * Copyright (C) 2006, 2007, 2008, 2010 Apple Inc. All rights reserved.
3 * Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies)
4 * Copyright (C) 2013 Samsung Electronics. All rights reserved.
5 *
6 * Redistribution and use in source and binary forms, with or without
7 * modification, are permitted provided that the following conditions are
8 * met:
9 *
10 *     * Redistributions of source code must retain the above copyright
11 * notice, this list of conditions and the following disclaimer.
12 *     * Redistributions in binary form must reproduce the above
13 * copyright notice, this list of conditions and the following disclaimer
14 * in the documentation and/or other materials provided with the
15 * distribution.
16 *     * Neither the name of Google Inc. nor the names of its
17 * contributors may be used to endorse or promote products derived from
18 * this software without specific prior written permission.
19 *
20 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
21 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
22 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
23 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
24 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
25 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
26 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
27 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
28 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
29 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
30 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
31 */
32
33#include "config.h"
34#include "core/frame/DOMWindowBase64.h"
35
36#include "bindings/core/v8/ExceptionState.h"
37#include "core/dom/ExceptionCode.h"
38#include "core/html/parser/HTMLParserIdioms.h"
39#include "wtf/text/Base64.h"
40
41namespace blink {
42
43String DOMWindowBase64::btoa(const String& stringToEncode, ExceptionState& exceptionState)
44{
45    if (stringToEncode.isNull())
46        return String();
47
48    if (!stringToEncode.containsOnlyLatin1()) {
49        exceptionState.throwDOMException(InvalidCharacterError, "The string to be encoded contains characters outside of the Latin1 range.");
50        return String();
51    }
52
53    return base64Encode(stringToEncode.latin1());
54}
55
56String DOMWindowBase64::atob(const String& encodedString, ExceptionState& exceptionState)
57{
58    if (encodedString.isNull())
59        return String();
60
61    if (!encodedString.containsOnlyLatin1()) {
62        exceptionState.throwDOMException(InvalidCharacterError, "The string to be decoded contains characters outside of the Latin1 range.");
63        return String();
64    }
65    Vector<char> out;
66    if (!base64Decode(encodedString, out, isHTMLSpace<UChar>, Base64ValidatePadding)) {
67        exceptionState.throwDOMException(InvalidCharacterError, "The string to be decoded is not correctly encoded.");
68        return String();
69    }
70
71    return String(out.data(), out.size());
72}
73
74} // namespace blink
75