/*
 * Copyright (C) 2012 Apple Inc. All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 *
 * THIS SOFTWARE IS PROVIDED BY APPLE INC. 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 DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR ITS CONTRIBUTORS
 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
 * THE POSSIBILITY OF SUCH DAMAGE.
 */

#import "config.h"
#import "RemoteNetworkingContext.h"

#import "WebErrors.h"
#import <WebCore/ResourceError.h>
#import <WebKitSystemInterface.h>
#import <wtf/MainThread.h>
#import <wtf/PassOwnPtr.h>

using namespace WebCore;

namespace WebKit {

static OwnPtr<NetworkStorageSession>& privateBrowsingStorageSession()
{
    ASSERT(isMainThread());
    DEFINE_STATIC_LOCAL(OwnPtr<NetworkStorageSession>, session, ());
    return session;
}

bool RemoteNetworkingContext::shouldClearReferrerOnHTTPSToHTTPRedirect() const
{
    return m_shouldClearReferrerOnHTTPSToHTTPRedirect;
}

RemoteNetworkingContext::RemoteNetworkingContext(bool needsSiteSpecificQuirks, bool localFileContentSniffingEnabled, bool privateBrowsingEnabled, bool shouldClearReferrerOnHTTPSToHTTPRedirect)
    : m_needsSiteSpecificQuirks(needsSiteSpecificQuirks)
    , m_localFileContentSniffingEnabled(localFileContentSniffingEnabled)
    , m_privateBrowsingEnabled(privateBrowsingEnabled)
    , m_shouldClearReferrerOnHTTPSToHTTPRedirect(shouldClearReferrerOnHTTPSToHTTPRedirect)
{
}

RemoteNetworkingContext::~RemoteNetworkingContext()
{
}

bool RemoteNetworkingContext::isValid() const
{
    return true;
}

bool RemoteNetworkingContext::needsSiteSpecificQuirks() const
{
    return m_needsSiteSpecificQuirks;
}

bool RemoteNetworkingContext::localFileContentSniffingEnabled() const
{
    return m_localFileContentSniffingEnabled;
}

NetworkStorageSession& RemoteNetworkingContext::storageSession() const
{
    if (m_privateBrowsingEnabled) {
        NetworkStorageSession* privateSession = privateBrowsingStorageSession().get();
        if (privateSession)
            return *privateSession;
        // Some requests with private browsing mode requested may still be coming shortly after NetworkProcess was told to destroy its session.
        // FIXME: Find a way to track private browsing sessions more rigorously.
        LOG_ERROR("Private browsing was requested, but there was no session for it. Please file a bug unless you just disabled private browsing, in which case it's an expected race.");
    }

    return NetworkStorageSession::defaultStorageSession();
}

NetworkStorageSession* RemoteNetworkingContext::privateBrowsingSession()
{
    return privateBrowsingStorageSession().get();
}

RetainPtr<CFDataRef> RemoteNetworkingContext::sourceApplicationAuditData() const
{
    return nil;
}

ResourceError RemoteNetworkingContext::blockedError(const ResourceRequest& request) const
{
    return WebKit::blockedError(request);
}

static String& privateBrowsingStorageSessionIdentifierBase()
{
    ASSERT(isMainThread());
    DEFINE_STATIC_LOCAL(String, base, ());
    return base;
}

void RemoteNetworkingContext::setPrivateBrowsingStorageSessionIdentifierBase(const String& identifier)
{
    privateBrowsingStorageSessionIdentifierBase() = identifier;
}

void RemoteNetworkingContext::ensurePrivateBrowsingSession()
{
    if (privateBrowsingStorageSession())
        return;

    ASSERT(!privateBrowsingStorageSessionIdentifierBase().isNull());
    RetainPtr<CFStringRef> cfIdentifier = String(privateBrowsingStorageSessionIdentifierBase() + ".PrivateBrowsing").createCFString();

    privateBrowsingStorageSession() = NetworkStorageSession::createPrivateBrowsingSession(privateBrowsingStorageSessionIdentifierBase());
}

void RemoteNetworkingContext::destroyPrivateBrowsingSession()
{
    privateBrowsingStorageSession() = nullptr;
}

}