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/*
* Copyright (C) 2017 Sami Vänttinen <sami.vanttinen@protonmail.com>
* Copyright (C) 2017 KeePassXC Team <team@keepassxc.org>
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#include "NativeMessagingBase.h"
#include <QStandardPaths>
#if defined(Q_OS_UNIX) && !defined(Q_OS_LINUX)
#include <sys/types.h>
#include <sys/event.h>
#include <sys/time.h>
#include <unistd.h>
#endif
#ifdef Q_OS_LINUX
#include <sys/epoll.h>
#include <unistd.h>
#endif
#ifdef Q_OS_WIN
#include <fcntl.h>
#include <io.h>
#endif
NativeMessagingBase::NativeMessagingBase()
{
#ifdef Q_OS_WIN
_setmode(_fileno(stdin), _O_BINARY);
_setmode(_fileno(stdout), _O_BINARY);
#else
m_notifier.reset(new QSocketNotifier(fileno(stdin), QSocketNotifier::Read, this));
connect(m_notifier.data(), SIGNAL(activated(int)), this, SLOT(newNativeMessage()));
#endif
}
void NativeMessagingBase::newNativeMessage()
{
#if defined(Q_OS_UNIX) && !defined(Q_OS_LINUX)
struct kevent ev[1];
struct timespec ts = { 5, 0 };
int fd = kqueue();
if (fd == -1) {
m_notifier->setEnabled(false);
return;
}
EV_SET(ev, fileno(stdin), EVFILT_READ, EV_ADD, 0, 0, nullptr);
if (kevent(fd, ev, 1, nullptr, 0, &ts) == -1) {
m_notifier->setEnabled(false);
return;
}
int ret = kevent(fd, NULL, 0, ev, 1, &ts);
if (ret < 1) {
m_notifier->setEnabled(false);
::close(fd);
return;
}
#elif defined(Q_OS_LINUX)
int fd = epoll_create(5);
struct epoll_event event;
event.events = EPOLLIN;
event.data.fd = 0;
if (epoll_ctl(fd, EPOLL_CTL_ADD, 0, &event) != 0) {
m_notifier->setEnabled(false);
return;
}
if (epoll_wait(fd, &event, 1, 5000) < 1) {
m_notifier->setEnabled(false);
::close(fd);
return;
}
#endif
readLength();
#ifndef Q_OS_WIN
::close(fd);
#endif
}
void NativeMessagingBase::readNativeMessages()
{
#ifdef Q_OS_WIN
quint32 length = 0;
while (m_running.load() && !std::cin.eof()) {
length = 0;
std::cin.read(reinterpret_cast<char*>(&length), 4);
readStdIn(length);
QThread::msleep(1);
}
#endif
}
QString NativeMessagingBase::jsonToString(const QJsonObject& json) const
{
return QString(QJsonDocument(json).toJson(QJsonDocument::Compact));
}
void NativeMessagingBase::sendReply(const QJsonObject& json)
{
if (!json.isEmpty()) {
sendReply(jsonToString(json));
}
}
void NativeMessagingBase::sendReply(const QString& reply)
{
if (!reply.isEmpty()) {
uint len = reply.length();
std::cout << char(((len>>0) & 0xFF)) << char(((len>>8) & 0xFF)) << char(((len>>16) & 0xFF)) << char(((len>>24) & 0xFF));
std::cout << reply.toStdString() << std::flush;
}
}
QString NativeMessagingBase::getLocalServerPath() const
{
#if defined(Q_OS_WIN)
return QStandardPaths::writableLocation(QStandardPaths::TempLocation) + "/kpxc_server";
#elif defined(Q_OS_UNIX) && !defined(Q_OS_MAC)
// Use XDG_RUNTIME_DIR instead of /tmp/ if it's available
QString path = QStandardPaths::writableLocation(QStandardPaths::RuntimeLocation) + "/kpxc_server";
return path.isEmpty() ? "/tmp/kpxc_server" : path;
#else // Q_OS_MAC and others
return "/tmp/kpxc_server";
#endif
}
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