sneedmc/launcher/minecraft/launch/DirectJavaLaunch.cpp

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/* Copyright 2013-2021 MultiMC Contributors
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#include "DirectJavaLaunch.h"
#include <QStandardPaths>
#include <launch/LaunchTask.h>
#include <minecraft/MinecraftInstance.h>
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#include <FileSystem.h>
#include <Commandline.h>
#ifdef Q_OS_LINUX
#include "gamemode_client.h"
#endif
DirectJavaLaunch::DirectJavaLaunch(LaunchTask *parent) : LaunchStep(parent)
{
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connect(&m_process, &LoggedProcess::log, this, &DirectJavaLaunch::logLines);
connect(&m_process, &LoggedProcess::stateChanged, this, &DirectJavaLaunch::on_state);
}
void DirectJavaLaunch::executeTask()
{
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auto instance = m_parent->instance();
std::shared_ptr<MinecraftInstance> minecraftInstance = std::dynamic_pointer_cast<MinecraftInstance>(instance);
QStringList args = minecraftInstance->javaArguments();
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args.append("-Djava.library.path=" + minecraftInstance->getNativePath());
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auto classPathEntries = minecraftInstance->getClassPath();
args.append("-cp");
QString classpath;
#ifdef Q_OS_WIN32
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classpath = classPathEntries.join(';');
#else
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classpath = classPathEntries.join(':');
#endif
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args.append(classpath);
args.append(minecraftInstance->getMainClass());
QString allArgs = args.join(", ");
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emit logLine("Java Arguments:\n[" + m_parent->censorPrivateInfo(allArgs) + "]\n\n", MessageLevel::Launcher);
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auto javaPath = FS::ResolveExecutable(instance->settings()->get("JavaPath").toString());
m_process.setProcessEnvironment(instance->createLaunchEnvironment());
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// make detachable - this will keep the process running even if the object is destroyed
m_process.setDetachable(true);
auto mcArgs = minecraftInstance->processMinecraftArgs(m_session, m_serverToJoin);
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args.append(mcArgs);
QString wrapperCommandStr = instance->getWrapperCommand().trimmed();
if(!wrapperCommandStr.isEmpty())
{
auto wrapperArgs = Commandline::splitArgs(wrapperCommandStr);
auto wrapperCommand = wrapperArgs.takeFirst();
auto realWrapperCommand = QStandardPaths::findExecutable(wrapperCommand);
if (realWrapperCommand.isEmpty())
{
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const char *reason = QT_TR_NOOP("The wrapper command \"%1\" couldn't be found.");
emit logLine(QString(reason).arg(wrapperCommand), MessageLevel::Fatal);
emitFailed(tr(reason).arg(wrapperCommand));
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return;
}
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emit logLine("Wrapper command is:\n" + wrapperCommandStr + "\n\n", MessageLevel::Launcher);
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args.prepend(javaPath);
m_process.start(wrapperCommand, wrapperArgs + args);
}
else
{
m_process.start(javaPath, args);
}
#ifdef Q_OS_LINUX
if (instance->settings()->get("EnableFeralGamemode").toBool())
{
auto pid = m_process.processId();
if (pid)
{
gamemode_request_start_for(pid);
}
}
#endif
}
void DirectJavaLaunch::on_state(LoggedProcess::State state)
{
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switch(state)
{
case LoggedProcess::FailedToStart:
{
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//: Error message displayed if instance can't start
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const char *reason = QT_TR_NOOP("Could not launch Minecraft!");
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emit logLine(reason, MessageLevel::Fatal);
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emitFailed(tr(reason));
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return;
}
case LoggedProcess::Aborted:
case LoggedProcess::Crashed:
{
m_parent->setPid(-1);
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emitFailed(tr("Game crashed."));
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return;
}
case LoggedProcess::Finished:
{
m_parent->setPid(-1);
// if the exit code wasn't 0, report this as a crash
auto exitCode = m_process.exitCode();
if(exitCode != 0)
{
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emitFailed(tr("Game crashed."));
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return;
}
//FIXME: make this work again
// m_postlaunchprocess.processEnvironment().insert("INST_EXITCODE", QString(exitCode));
// run post-exit
emitSucceeded();
break;
}
case LoggedProcess::Running:
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emit logLine(QString("Minecraft process ID: %1\n\n").arg(m_process.processId()), MessageLevel::Launcher);
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m_parent->setPid(m_process.processId());
m_parent->instance()->setLastLaunch();
break;
default:
break;
}
}
void DirectJavaLaunch::setWorkingDirectory(const QString &wd)
{
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m_process.setWorkingDirectory(wd);
}
void DirectJavaLaunch::proceed()
{
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// nil
}
bool DirectJavaLaunch::abort()
{
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auto state = m_process.state();
if (state == LoggedProcess::Running || state == LoggedProcess::Starting)
{
m_process.kill();
}
return true;
}