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/*
* 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.
*/
#include "config.h"
#include "ChildProcessProxy.h"
#include "ChildProcessMessages.h"
#include <wtf/RunLoop.h>
namespace WebKit {
ChildProcessProxy::ChildProcessProxy()
{
}
ChildProcessProxy::~ChildProcessProxy()
{
if (m_connection)
m_connection->invalidate();
if (m_processLauncher) {
m_processLauncher->invalidate();
m_processLauncher = nullptr;
}
}
ChildProcessProxy* ChildProcessProxy::fromConnection(IPC::Connection* connection)
{
ASSERT(connection);
ChildProcessProxy* childProcessProxy = static_cast<ChildProcessProxy*>(connection->client());
ASSERT(childProcessProxy->connection() == connection);
return childProcessProxy;
}
void ChildProcessProxy::getLaunchOptions(ProcessLauncher::LaunchOptions& launchOptions)
{
if (const char* userDirectorySuffix = getenv("DIRHELPER_USER_DIR_SUFFIX"))
launchOptions.extraInitializationData.add(ASCIILiteral("user-directory-suffix"), userDirectorySuffix);
#if !defined(NDEBUG) && (PLATFORM(GTK) || PLATFORM(EFL))
const char* varname;
switch (launchOptions.processType) {
case ProcessLauncher::ProcessType::Web:
varname = "WEB_PROCESS_CMD_PREFIX";
break;
#if ENABLE(NETSCAPE_PLUGIN_API)
case ProcessLauncher::ProcessType::Plugin64:
case ProcessLauncher::ProcessType::Plugin32:
varname = "PLUGIN_PROCESS_CMD_PREFIX";
break;
#endif
case ProcessLauncher::ProcessType::Network:
varname = "NETWORK_PROCESS_CMD_PREFIX";
break;
#if ENABLE(DATABASE_PROCESS)
case ProcessLauncher::ProcessType::Database:
varname = "DATABASE_PROCESS_CMD_PREFIX";
break;
#endif
}
const char* processCmdPrefix = getenv(varname);
if (processCmdPrefix && *processCmdPrefix)
launchOptions.processCmdPrefix = String::fromUTF8(processCmdPrefix);
#endif // !defined(NDEBUG) && (PLATFORM(GTK) || PLATFORM(EFL)
}
void ChildProcessProxy::connect()
{
ASSERT(!m_processLauncher);
ProcessLauncher::LaunchOptions launchOptions;
getLaunchOptions(launchOptions);
m_processLauncher = ProcessLauncher::create(this, launchOptions);
}
void ChildProcessProxy::terminate()
{
#if PLATFORM(COCOA)
if (m_connection && m_connection->kill())
return;
#endif
// FIXME: We should really merge process launching into IPC connection creation and get rid of the process launcher.
if (m_processLauncher)
m_processLauncher->terminateProcess();
}
ChildProcessProxy::State ChildProcessProxy::state() const
{
if (m_processLauncher && m_processLauncher->isLaunching())
return ChildProcessProxy::State::Launching;
if (!m_connection)
return ChildProcessProxy::State::Terminated;
return ChildProcessProxy::State::Running;
}
bool ChildProcessProxy::sendMessage(std::unique_ptr<IPC::MessageEncoder> encoder, unsigned messageSendFlags)
{
switch (state()) {
case State::Launching:
// If we're waiting for the child process to launch, we need to stash away the messages so we can send them once we have a connection.
m_pendingMessages.append(std::make_pair(WTFMove(encoder), messageSendFlags));
return true;
case State::Running:
return connection()->sendMessage(WTFMove(encoder), messageSendFlags);
case State::Terminated:
return false;
}
return false;
}
void ChildProcessProxy::addMessageReceiver(IPC::StringReference messageReceiverName, IPC::MessageReceiver& messageReceiver)
{
m_messageReceiverMap.addMessageReceiver(messageReceiverName, messageReceiver);
}
void ChildProcessProxy::addMessageReceiver(IPC::StringReference messageReceiverName, uint64_t destinationID, IPC::MessageReceiver& messageReceiver)
{
m_messageReceiverMap.addMessageReceiver(messageReceiverName, destinationID, messageReceiver);
}
void ChildProcessProxy::removeMessageReceiver(IPC::StringReference messageReceiverName, uint64_t destinationID)
{
m_messageReceiverMap.removeMessageReceiver(messageReceiverName, destinationID);
}
void ChildProcessProxy::removeMessageReceiver(IPC::StringReference messageReceiverName)
{
m_messageReceiverMap.removeMessageReceiver(messageReceiverName);
}
bool ChildProcessProxy::dispatchMessage(IPC::Connection& connection, IPC::MessageDecoder& decoder)
{
return m_messageReceiverMap.dispatchMessage(connection, decoder);
}
bool ChildProcessProxy::dispatchSyncMessage(IPC::Connection& connection, IPC::MessageDecoder& decoder, std::unique_ptr<IPC::MessageEncoder>& replyEncoder)
{
return m_messageReceiverMap.dispatchSyncMessage(connection, decoder, replyEncoder);
}
void ChildProcessProxy::didFinishLaunching(ProcessLauncher*, IPC::Connection::Identifier connectionIdentifier)
{
ASSERT(!m_connection);
m_connection = IPC::Connection::createServerConnection(connectionIdentifier, *this);
#if (PLATFORM(MAC) || PLATFORM(QT) && USE(MACH_PORTS)) && __MAC_OS_X_VERSION_MIN_REQUIRED <= 101000
m_connection->setShouldCloseConnectionOnMachExceptions();
#elif PLATFORM(QT) && USE(UNIX_DOMAIN_SOCKETS)
m_connection->setShouldCloseConnectionOnProcessTermination(processIdentifier());
#endif
connectionWillOpen(*m_connection);
m_connection->open();
for (size_t i = 0; i < m_pendingMessages.size(); ++i) {
std::unique_ptr<IPC::MessageEncoder> message = WTFMove(m_pendingMessages[i].first);
unsigned messageSendFlags = m_pendingMessages[i].second;
m_connection->sendMessage(WTFMove(message), messageSendFlags);
}
m_pendingMessages.clear();
}
void ChildProcessProxy::shutDownProcess()
{
switch (state()) {
case State::Launching:
m_processLauncher->invalidate();
m_processLauncher = nullptr;
break;
case State::Running:
#if PLATFORM(IOS)
// On iOS deploy a watchdog in the UI process, since the child process may be suspended.
// If 30s is insufficient for any outstanding activity to complete cleanly, then it will be killed.
ASSERT(m_connection);
m_connection->terminateSoon(30);
#endif
break;
case State::Terminated:
return;
}
if (!m_connection)
return;
processWillShutDown(*m_connection);
if (canSendMessage())
send(Messages::ChildProcess::ShutDown(), 0);
m_connection->invalidate();
m_connection = nullptr;
}
void ChildProcessProxy::connectionWillOpen(IPC::Connection&)
{
}
} // namespace WebKit
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