Source/core/loader/MixedContentChecker.cpp

/*
 * Copyright (C) 2012 Google Inc. All rights reserved.
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 *
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 *     notice, this list of conditions and the following disclaimer.
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 *     notice, this list of conditions and the following disclaimer in the
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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/frame/LocalFrame.h"
#include "core/frame/Settings.h"
#include "core/loader/FrameLoader.h"
#include "core/loader/FrameLoaderClient.h"
#include "platform/weborigin/SecurityOrigin.h"
#include "wtf/text/StringBuilder.h"

namespace WebCore {

MixedContentChecker::MixedContentChecker(LocalFrame* 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::canDisplayInsecureContentInternal(SecurityOrigin* securityOrigin, const KURL& url, const MixedContentType type) const
{
    if (!isMixedContent(securityOrigin, url))
        return true;

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

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

    return allowed;
}

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

    Settings* settings = m_frame->settings();
    bool allowedPerSettings = settings && (settings->allowRunningOfInsecureContent() || ((type == WebSocket) && settings->allowConnectingInsecureWebSocket()));
    bool allowed = client()->allowRunningInsecureContent(allowedPerSettings, securityOrigin, url);
    logWarning(allowed, url, type);

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

    return allowed;
}

void MixedContentChecker::logWarning(bool allowed, const KURL& target, const MixedContentType type) const
{
    StringBuilder message;
    message.append((allowed ? "" : "[blocked] "));
    message.append("The page at '" + m_frame->document()->url().elidedString() + "' was loaded over HTTPS, but ");
    switch (type) {
    case Display:
        message.append("displayed insecure content from '" + target.elidedString() + "': this content should also be loaded over HTTPS.\n");
        break;
    case Execution:
    case WebSocket:
        message.append("ran insecure content from '" + target.elidedString() + "': this content should also be loaded over HTTPS.\n");
        break;
    case Submission:
        message.append("is submitting data to an insecure location at '" + target.elidedString() + "': this content should also be submitted over HTTPS.\n");
        break;
    }
    MessageLevel messageLevel = allowed ? WarningMessageLevel : ErrorMessageLevel;
    m_frame->document()->addConsoleMessage(SecurityMessageSource, messageLevel, message.toString());
}

} // namespace WebCore