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#include "process.h"
#include <QCoreApplication>
#include <unistd.h>
#include <QDebug>
#include <QFile>
#include <QSocketNotifier>
#include <sys/socket.h>
#include <signal.h>
#include <fcntl.h>
static int pipefd[2];
static void signalhandler(int)
{
write(pipefd[1], " ", 1);
}
Process::Process()
: QObject(0)
, mProcess(new QProcess(this))
, mDebuggee(0)
, mDebug(false)
{
mProcess->setProcessChannelMode(QProcess::SeparateChannels);
connect(mProcess, SIGNAL(readyReadStandardError()), this, SLOT(readyReadStandardError()));
connect(mProcess, SIGNAL(readyReadStandardOutput()), this, SLOT(readyReadStandardOutput()));
connect(mProcess, SIGNAL(finished(int, QProcess::ExitStatus)), this, SLOT(finished(int, QProcess::ExitStatus)));
connect(mProcess, SIGNAL(error(QProcess::ProcessError)), this, SLOT(error(QProcess::ProcessError)));
connect(mProcess, SIGNAL(finished(int, QProcess::ExitStatus)), qApp, SLOT(quit()));
if (pipe2(pipefd, O_CLOEXEC) != 0)
qWarning("Could not create pipe");
QSocketNotifier *n = new QSocketNotifier(pipefd[0], QSocketNotifier::Read, this);
connect(n, SIGNAL(activated(int)), this, SLOT(stop()));
signal(SIGINT, signalhandler);
signal(SIGKILL, signalhandler);
}
Process::~Process()
{
close(pipefd[0]);
close(pipefd[1]);
}
void Process::readyReadStandardOutput()
{
QByteArray b = mProcess->readAllStandardOutput();
write(1, b.constData(), b.size());
}
void Process::readyReadStandardError()
{
QByteArray b = mProcess->readAllStandardError();
if (mDebug) {
int index = b.indexOf(" created; pid = ");
if (index >= 0) {
mDebuggee = QString::fromLatin1(b.mid(index+16)).toUInt();
}
mDebug = false; // only search once
}
write(2, b.constData(), b.size());
}
void Process::setDebug()
{
mDebug = true;
}
void Process::error(QProcess::ProcessError)
{
qDebug() << "Process error";
}
void Process::finished(int exitCode, QProcess::ExitStatus exitStatus)
{
if (exitStatus == QProcess::NormalExit)
qDebug() << "Process exited with exitcode" << exitCode;
else
qDebug() << "Process stopped";
}
void Process::startup(QStringList args)
{
QProcessEnvironment pe = QProcessEnvironment::systemEnvironment();
QFile f("/system/bin/appcontroller.conf");
if (!f.open(QFile::ReadOnly)) {
qWarning("Could not read config file.");
}
while (!f.atEnd()) {
QString line = f.readLine();
if (line.startsWith("env=")) {
QString sub = line.mid(4).simplified();
int index = sub.indexOf('=');
if (index < 2) {
// ignore
} else {
pe.insert(sub.left(index), sub.mid(index+1));
qDebug() << sub.left(index) << sub.mid(index+1);
}
} else if (line.startsWith("append=")) {
args += line.mid(7).simplified();
qDebug() << args;
}
}
// env=...
// append=...
mProcess->setProcessEnvironment(pe);
QString binary = args.first();
qDebug() << binary << args;
args.removeFirst();
mProcess->start(binary, args);
}
void Process::start(const QStringList &args)
{
startup(args);
}
void Process::stop()
{
if (mProcess->state() == QProcess::QProcess::NotRunning) {
qDebug() << "No process running";
qApp->exit();
return;
}
if (mDebuggee != 0) {
qDebug() << "Kill debuggee " << mDebuggee;
if (kill(mDebuggee, SIGKILL) != 0)
perror("Could not kill debugee");
}
if (kill(-getpid(), SIGTERM) != 0)
perror("Could not kill process group");
mProcess->terminate();
if (!mProcess->waitForFinished())
mProcess->kill();
}
void Process::incomingConnection(int i)
{
accept(i, NULL, NULL);
stop();
}
void Process::setSocketNotifier(QSocketNotifier *s)
{
connect(s, SIGNAL(activated(int)), this, SLOT(incomingConnection(int)));
}
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