pollymc/logic/BaseProcess.cpp

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/* Copyright 2013-2015 MultiMC Contributors
*
* Authors: Orochimarufan <orochimarufan.x3@gmail.com>
*
* 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.
*/
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#include "BaseProcess.h"
#include <QDebug>
#include <QDir>
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#include <QEventLoop>
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MessageLevel::Enum MessageLevel::getLevel(const QString& levelName)
{
if (levelName == "MultiMC")
return MessageLevel::MultiMC;
else if (levelName == "Debug")
return MessageLevel::Debug;
else if (levelName == "Info")
return MessageLevel::Info;
else if (levelName == "Message")
return MessageLevel::Message;
else if (levelName == "Warning")
return MessageLevel::Warning;
else if (levelName == "Error")
return MessageLevel::Error;
else if (levelName == "Fatal")
return MessageLevel::Fatal;
// Skip PrePost, it's not exposed to !![]!
else
return MessageLevel::Message;
}
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BaseProcess::BaseProcess(InstancePtr instance): QProcess(), m_instance(instance)
{
}
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void BaseProcess::init()
{
connect(this, SIGNAL(finished(int, QProcess::ExitStatus)),
SLOT(finish(int, QProcess::ExitStatus)));
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// prepare the process environment
QProcessEnvironment rawenv = QProcessEnvironment::systemEnvironment();
QProcessEnvironment env;
QStringList ignored =
{
"JAVA_ARGS",
"CLASSPATH",
"CONFIGPATH",
"JAVA_HOME",
"JRE_HOME",
"_JAVA_OPTIONS",
"JAVA_OPTIONS",
"JAVA_TOOL_OPTIONS"
};
for(auto key: rawenv.keys())
{
auto value = rawenv.value(key);
// filter out dangerous java crap
if(ignored.contains(key))
{
qDebug() << "Env: ignoring" << key << value;
continue;
}
// filter MultiMC-related things
if(key.startsWith("QT_"))
{
qDebug() << "Env: ignoring" << key << value;
continue;
}
#ifdef LINUX
// Do not pass LD_* variables to java. They were intended for MultiMC
if(key.startsWith("LD_"))
{
qDebug() << "Env: ignoring" << key << value;
continue;
}
// Strip IBus
// IBus is a Linux IME framework. For some reason, it breaks MC?
if (key == "XMODIFIERS" && value.contains(IBUS))
{
QString save = value;
value.replace(IBUS, "");
qDebug() << "Env: stripped" << IBUS << "from" << save << ":" << value;
}
#endif
qDebug() << "Env: " << key << value;
env.insert(key, value);
}
#ifdef LINUX
// HACK: Workaround for QTBUG-42500
env.insert("LD_LIBRARY_PATH", "");
#endif
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// export some infos
auto variables = getVariables();
for (auto it = variables.begin(); it != variables.end(); ++it)
{
env.insert(it.key(), it.value());
}
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this->setProcessEnvironment(env);
m_prepostlaunchprocess.setProcessEnvironment(env);
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// std channels
connect(this, SIGNAL(readyReadStandardError()), SLOT(on_stdErr()));
connect(this, SIGNAL(readyReadStandardOutput()), SLOT(on_stdOut()));
// Log prepost launch command output (can be disabled.)
if (m_instance->settings().get("LogPrePostOutput").toBool())
{
connect(&m_prepostlaunchprocess, &QProcess::readyReadStandardError, this,
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&BaseProcess::on_prepost_stdErr);
connect(&m_prepostlaunchprocess, &QProcess::readyReadStandardOutput, this,
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&BaseProcess::on_prepost_stdOut);
}
// a process has been constructed for the instance. It is running from MultiMC POV
m_instance->setRunning(true);
}
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void BaseProcess::setWorkdir(QString path)
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{
QDir mcDir(path);
this->setWorkingDirectory(mcDir.absolutePath());
m_prepostlaunchprocess.setWorkingDirectory(mcDir.absolutePath());
}
void BaseProcess::printHeader()
{
emit log(m_header);
}
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void BaseProcess::logOutput(const QStringList &lines, MessageLevel::Enum defaultLevel,
bool guessLevel, bool censor)
{
for (int i = 0; i < lines.size(); ++i)
logOutput(lines[i], defaultLevel, guessLevel, censor);
}
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void BaseProcess::logOutput(QString line, MessageLevel::Enum defaultLevel, bool guessLevel,
bool censor)
{
MessageLevel::Enum level = defaultLevel;
// Level prefix
int endmark = line.indexOf("]!");
if (line.startsWith("!![") && endmark != -1)
{
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level = MessageLevel::getLevel(line.left(endmark).mid(3));
line = line.mid(endmark + 2);
}
// Guess level
else if (guessLevel)
level = this->guessLevel(line, defaultLevel);
if (censor)
line = censorPrivateInfo(line);
emit log(line, level);
}
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void BaseProcess::on_stdErr()
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{
QByteArray data = readAllStandardError();
QString str = m_err_leftover + QString::fromLocal8Bit(data);
str.remove('\r');
QStringList lines = str.split("\n");
m_err_leftover = lines.takeLast();
logOutput(lines, MessageLevel::Error);
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}
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void BaseProcess::on_stdOut()
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{
QByteArray data = readAllStandardOutput();
QString str = m_out_leftover + QString::fromLocal8Bit(data);
str.remove('\r');
QStringList lines = str.split("\n");
m_out_leftover = lines.takeLast();
logOutput(lines);
}
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void BaseProcess::on_prepost_stdErr()
{
QByteArray data = m_prepostlaunchprocess.readAllStandardError();
QString str = m_err_leftover + QString::fromLocal8Bit(data);
str.remove('\r');
QStringList lines = str.split("\n");
m_err_leftover = lines.takeLast();
logOutput(lines, MessageLevel::PrePost, false, false);
}
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void BaseProcess::on_prepost_stdOut()
{
QByteArray data = m_prepostlaunchprocess.readAllStandardOutput();
QString str = m_out_leftover + QString::fromLocal8Bit(data);
str.remove('\r');
QStringList lines = str.split("\n");
m_out_leftover = lines.takeLast();
logOutput(lines, MessageLevel::PrePost, false, false);
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}
// exit handler
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void BaseProcess::finish(int code, ExitStatus status)
{
// Flush console window
if (!m_err_leftover.isEmpty())
{
logOutput(m_err_leftover, MessageLevel::Error);
m_err_leftover.clear();
}
if (!m_out_leftover.isEmpty())
{
logOutput(m_out_leftover);
m_out_leftover.clear();
}
if (!killed)
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{
if (status == NormalExit)
{
//: Message displayed on instance exit
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emit log(tr("Game exited with exitcode %1.").arg(code));
}
else
{
//: Message displayed on instance crashed
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if(code == -1)
emit log(tr("Game crashed.").arg(code));
else
emit log(tr("Game crashed with exitcode %1.").arg(code));
}
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}
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else
{
//: Message displayed after the instance exits due to kill request
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emit log(tr("Game was killed by user."), MessageLevel::Error);
}
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m_prepostlaunchprocess.processEnvironment().insert("INST_EXITCODE", QString(code));
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// run post-exit
postLaunch();
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m_instance->cleanupAfterRun();
// no longer running...
m_instance->setRunning(false);
emit ended(m_instance, code, status);
}
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void BaseProcess::killProcess()
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{
killed = true;
if (m_prepostlaunchprocess.state() == QProcess::Running)
{
m_prepostlaunchprocess.kill();
}
else
{
kill();
}
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}
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bool BaseProcess::preLaunch()
{
QString prelaunch_cmd = m_instance->settings().get("PreLaunchCommand").toString();
if (!prelaunch_cmd.isEmpty())
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{
prelaunch_cmd = substituteVariables(prelaunch_cmd);
// Launch
emit log(tr("Running Pre-Launch command: %1").arg(prelaunch_cmd));
m_prepostlaunchprocess.start(prelaunch_cmd);
if (!waitForPrePost())
{
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emit log(tr("The command failed to start"), MessageLevel::Fatal);
return false;
}
// Flush console window
if (!m_err_leftover.isEmpty())
{
logOutput(m_err_leftover, MessageLevel::PrePost);
m_err_leftover.clear();
}
if (!m_out_leftover.isEmpty())
{
logOutput(m_out_leftover, MessageLevel::PrePost);
m_out_leftover.clear();
}
// Process return values
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if (m_prepostlaunchprocess.exitStatus() != NormalExit)
{
emit log(tr("Pre-Launch command failed with code %1.\n\n")
.arg(m_prepostlaunchprocess.exitCode()),
MessageLevel::Fatal);
m_instance->cleanupAfterRun();
emit prelaunch_failed(m_instance, m_prepostlaunchprocess.exitCode(),
m_prepostlaunchprocess.exitStatus());
// not running, failed
m_instance->setRunning(false);
return false;
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}
else
emit log(tr("Pre-Launch command ran successfully.\n\n"));
return m_instance->reload();
}
return true;
}
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bool BaseProcess::postLaunch()
{
QString postlaunch_cmd = m_instance->settings().get("PostExitCommand").toString();
if (!postlaunch_cmd.isEmpty())
{
postlaunch_cmd = substituteVariables(postlaunch_cmd);
emit log(tr("Running Post-Launch command: %1").arg(postlaunch_cmd));
m_prepostlaunchprocess.start(postlaunch_cmd);
if (!waitForPrePost())
{
return false;
}
// Flush console window
if (!m_err_leftover.isEmpty())
{
logOutput(m_err_leftover, MessageLevel::PrePost);
m_err_leftover.clear();
}
if (!m_out_leftover.isEmpty())
{
logOutput(m_out_leftover, MessageLevel::PrePost);
m_out_leftover.clear();
}
if (m_prepostlaunchprocess.exitStatus() != NormalExit)
{
emit log(tr("Post-Launch command failed with code %1.\n\n")
.arg(m_prepostlaunchprocess.exitCode()),
MessageLevel::Error);
emit postlaunch_failed(m_instance, m_prepostlaunchprocess.exitCode(),
m_prepostlaunchprocess.exitStatus());
// not running, failed
m_instance->setRunning(false);
}
else
emit log(tr("Post-Launch command ran successfully.\n\n"));
return m_instance->reload();
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}
return true;
}
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bool BaseProcess::waitForPrePost()
{
if (!m_prepostlaunchprocess.waitForStarted())
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return false;
QEventLoop eventLoop;
auto finisher = [this, &eventLoop](QProcess::ProcessState state)
{
if (state == QProcess::NotRunning)
{
eventLoop.quit();
}
};
auto connection = connect(&m_prepostlaunchprocess, &QProcess::stateChanged, finisher);
int ret = eventLoop.exec();
disconnect(connection);
return ret == 0;
}
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QString BaseProcess::substituteVariables(const QString &cmd) const
{
QString out = cmd;
auto variables = getVariables();
for (auto it = variables.begin(); it != variables.end(); ++it)
{
out.replace("$" + it.key(), it.value());
}
auto env = QProcessEnvironment::systemEnvironment();
for (auto var : env.keys())
{
out.replace("$" + var, env.value(var));
}
return out;
}