Source/core/loader/MixedContentChecker.cpp

/*
 * Copyright (C) 2012 Google Inc. All rights reserved.
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 *     notice, this list of conditions and the following disclaimer.
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 *     its contributors may be used to endorse or promote products derived
 *     from this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY APPLE AND ITS CONTRIBUTORS "AS IS" AND ANY
 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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#include "config.h"
#include "core/loader/MixedContentChecker.h"

#include "core/dom/Document.h"
#include "core/loader/FrameLoader.h"
#include "core/loader/FrameLoaderClient.h"
#include "core/frame/Frame.h"
#include "core/frame/Settings.h"
#include "platform/weborigin/SecurityOrigin.h"

namespace WebCore {

MixedContentChecker::MixedContentChecker(Frame* frame)
    : m_frame(frame)
{
}

FrameLoaderClient* MixedContentChecker::client() const
{
    return m_frame->loader().client();
}

// static
bool MixedContentChecker::isMixedContent(SecurityOrigin* securityOrigin, const KURL& url)
{
    if (securityOrigin->protocol() != "https")
        return false; // We only care about HTTPS security origins.

    // We're in a secure context, so |url| is mixed content if it's insecure.
    return !SecurityOrigin::isSecure(url);
}

bool MixedContentChecker::canDisplayInsecureContent(SecurityOrigin* securityOrigin, const KURL& url) const
{
    if (!isMixedContent(securityOrigin, url))
        return true;

    Settings* settings = m_frame->settings();
    bool allowed = client()->allowDisplayingInsecureContent(settings && settings->allowDisplayOfInsecureContent(), securityOrigin, url);
    logWarning(allowed, "displayed", url);

    if (allowed)
        client()->didDisplayInsecureContent();

    return allowed;
}

bool MixedContentChecker::canRunInsecureContent(SecurityOrigin* securityOrigin, const KURL& url) const
{
    if (!isMixedContent(securityOrigin, url))
        return true;

    Settings* settings = m_frame->settings();
    bool allowed = client()->allowRunningInsecureContent(settings && settings->allowRunningOfInsecureContent(), securityOrigin, url);
    logWarning(allowed, "ran", url);

    if (allowed)
        client()->didRunInsecureContent(securityOrigin, url);

    return allowed;
}

void MixedContentChecker::logWarning(bool allowed, const String& action, const KURL& target) const
{
    String message = String(allowed ? "" : "[blocked] ") + "The page at '" + m_frame->document()->url().elidedString() + "' was loaded over HTTPS, but " + action + " insecure content from '" + target.elidedString() + "': this content should also be loaded over HTTPS.\n";
    MessageLevel messageLevel = allowed ? WarningMessageLevel : ErrorMessageLevel;
    m_frame->document()->addConsoleMessage(SecurityMessageSource, messageLevel, message);
}

} // namespace WebCore