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/*
* Copyright (C) 2020 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.
*/
#include "config.h"
#include "APIContentWorld.h"
#include "ContentWorldShared.h"
#include "WebProcessMessages.h"
#include "WebProcessProxy.h"
#include "WebUserContentControllerProxy.h"
#include <wtf/HashMap.h>
#include <wtf/WeakRef.h>
#include <wtf/text/StringHash.h>
namespace API {
static HashMap<WTF::String, WeakRef<ContentWorld>>& sharedWorldNameMap()
{
static NeverDestroyed<HashMap<WTF::String, WeakRef<ContentWorld>>> sharedMap;
return sharedMap;
}
static HashMap<WebKit::ContentWorldIdentifier, WeakRef<ContentWorld>>& sharedWorldIdentifierMap()
{
static NeverDestroyed<HashMap<WebKit::ContentWorldIdentifier, WeakRef<ContentWorld>>> sharedMap;
return sharedMap;
}
ContentWorld* ContentWorld::worldForIdentifier(WebKit::ContentWorldIdentifier identifier)
{
if (identifier == WebKit::pageContentWorldIdentifier())
return &pageContentWorldSingleton();
return sharedWorldIdentifierMap().get(identifier);
}
static WebKit::ContentWorldIdentifier generateIdentifier()
{
static std::once_flag once;
std::call_once(once, [] {
// To make sure we don't use our shared pageContentWorld identifier for this
// content world we're about to make, burn through one identifier.
auto identifier = WebKit::ContentWorldIdentifier::generate();
ASSERT_UNUSED(identifier, identifier.object().toUInt64() >= WebKit::pageContentWorldIdentifier().object().toUInt64());
});
return WebKit::ContentWorldIdentifier::generate();
}
ContentWorld::ContentWorld(const WTF::String& name, OptionSet<WebKit::ContentWorldOption> options)
: m_identifier(generateIdentifier())
, m_name(name)
, m_options(options)
{
auto addResult = sharedWorldIdentifierMap().add(m_identifier, *this);
ASSERT_UNUSED(addResult, addResult.isNewEntry);
}
ContentWorld::ContentWorld(WebKit::ContentWorldIdentifier identifier)
: m_identifier(identifier)
{
ASSERT(m_identifier == WebKit::pageContentWorldIdentifier());
}
Ref<ContentWorld> ContentWorld::sharedWorldWithName(const WTF::String& name, OptionSet<WebKit::ContentWorldOption> options)
{
RefPtr<ContentWorld> newContentWorld;
auto result = sharedWorldNameMap().ensure(name, [&] {
newContentWorld = adoptRef(*new ContentWorld(name, options));
return WeakRef { *newContentWorld };
});
return newContentWorld ? newContentWorld.releaseNonNull() : Ref { result.iterator->value.get() };
}
ContentWorld& ContentWorld::pageContentWorldSingleton()
{
static NeverDestroyed<Ref<ContentWorld>> world(adoptRef(*new ContentWorld(WebKit::pageContentWorldIdentifier())));
return world.get();
}
ContentWorld& ContentWorld::defaultClientWorldSingleton()
{
static NeverDestroyed<Ref<ContentWorld>> world(adoptRef(*new ContentWorld(WTF::String { }, { })));
return world.get();
}
ContentWorld::~ContentWorld()
{
ASSERT(m_identifier != WebKit::pageContentWorldIdentifier());
auto result = sharedWorldIdentifierMap().take(m_identifier);
ASSERT_UNUSED(result, result.get() == this || m_identifier == WebKit::pageContentWorldIdentifier());
if (!name().isNull()) {
auto taken = sharedWorldNameMap().take(name());
ASSERT_UNUSED(taken, taken.get() == this);
}
for (Ref process : m_processes)
process->send(Messages::WebProcess::ContentWorldDestroyed(m_identifier), 0);
}
WebKit::ContentWorldData ContentWorld::worldDataForProcess(WebKit::WebProcessProxy& process) const
{
m_processes.add(process);
return { m_identifier, m_name, m_options };
}
} // namespace API
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