1/*
2 * Copyright (C) 2012 Google Inc. All rights reserved.
3 *
4 * Redistribution and use in source and binary forms, with or without
5 * modification, are permitted provided that the following conditions
6 * are met:
7 *
8 * 1.  Redistributions of source code must retain the above copyright
9 *     notice, this list of conditions and the following disclaimer.
10 * 2.  Redistributions in binary form must reproduce the above copyright
11 *     notice, this list of conditions and the following disclaimer in the
12 *     documentation and/or other materials provided with the distribution.
13 * 3.  Neither the name of Apple Computer, Inc. ("Apple") nor the names of
14 *     its contributors may be used to endorse or promote products derived
15 *     from this software without specific prior written permission.
16 *
17 * THIS SOFTWARE IS PROVIDED BY APPLE AND ITS CONTRIBUTORS "AS IS" AND ANY
18 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
19 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
20 * DISCLAIMED. IN NO EVENT SHALL APPLE OR ITS CONTRIBUTORS BE LIABLE FOR ANY
21 * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
22 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
23 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
24 * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
25 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
26 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
27 */
28
29#include "config.h"
30#include "MixedContentChecker.h"
31
32#include "Console.h"
33#include "DOMWindow.h"
34#include "Document.h"
35#include "Frame.h"
36#include "FrameLoader.h"
37#include "FrameLoaderClient.h"
38#include "SchemeRegistry.h"
39#include "SecurityOrigin.h"
40#include "Settings.h"
41#include <wtf/text/CString.h>
42#include <wtf/text/WTFString.h>
43
44namespace WebCore {
45
46MixedContentChecker::MixedContentChecker(Frame* frame)
47    : m_frame(frame)
48{
49}
50
51FrameLoaderClient* MixedContentChecker::client() const
52{
53    return m_frame->loader()->client();
54}
55
56// static
57bool MixedContentChecker::isMixedContent(SecurityOrigin* securityOrigin, const KURL& url)
58{
59    if (securityOrigin->protocol() != "https")
60        return false; // We only care about HTTPS security origins.
61
62    // We're in a secure context, so |url| is mixed content if it's insecure.
63    return !SecurityOrigin::isSecure(url);
64}
65
66bool MixedContentChecker::canDisplayInsecureContent(SecurityOrigin* securityOrigin, const KURL& url) const
67{
68    if (!isMixedContent(securityOrigin, url))
69        return true;
70
71    Settings* settings = m_frame->settings();
72    bool allowed = client()->allowDisplayingInsecureContent(settings && settings->allowDisplayOfInsecureContent(), securityOrigin, url);
73    logWarning(allowed, "displayed", url);
74
75    if (allowed)
76        client()->didDisplayInsecureContent();
77
78    return allowed;
79}
80
81bool MixedContentChecker::canRunInsecureContent(SecurityOrigin* securityOrigin, const KURL& url) const
82{
83    if (!isMixedContent(securityOrigin, url))
84        return true;
85
86    Settings* settings = m_frame->settings();
87    bool allowed = client()->allowRunningInsecureContent(settings && settings->allowRunningOfInsecureContent(), securityOrigin, url);
88    logWarning(allowed, "ran", url);
89
90    if (allowed)
91        client()->didRunInsecureContent(securityOrigin, url);
92
93    return allowed;
94}
95
96void MixedContentChecker::logWarning(bool allowed, const String& action, const KURL& target) const
97{
98    String message = makeString((allowed ? "" : "[blocked] "), "The page at ", m_frame->document()->url().stringCenterEllipsizedToLength(), " ", action, " insecure content from ", target.stringCenterEllipsizedToLength(), ".\n");
99    m_frame->document()->addConsoleMessage(SecurityMessageSource, WarningMessageLevel, message);
100}
101
102} // namespace WebCore
103