kwin/src/wayland/clientconnection.cpp

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/*
SPDX-FileCopyrightText: 2014 Martin Gräßlin <mgraesslin@kde.org>
SPDX-License-Identifier: LGPL-2.1-only OR LGPL-3.0-only OR LicenseRef-KDE-Accepted-LGPL
*/
#include "clientconnection.h"
#include "display.h"
// Qt
#include <QFileInfo>
#include <QVector>
// Wayland
#include <wayland-server.h>
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namespace KWaylandServer
{
class ClientConnectionPrivate
{
public:
ClientConnectionPrivate(wl_client *c, Display *display, ClientConnection *q);
~ClientConnectionPrivate();
wl_client *client;
Display *display;
pid_t pid = 0;
uid_t user = 0;
gid_t group = 0;
QString executablePath;
private:
static void destroyListenerCallback(wl_listener *listener, void *data);
ClientConnection *q;
wl_listener listener;
static QVector<ClientConnectionPrivate *> s_allClients;
};
QVector<ClientConnectionPrivate *> ClientConnectionPrivate::s_allClients;
ClientConnectionPrivate::ClientConnectionPrivate(wl_client *c, Display *display, ClientConnection *q)
: client(c)
, display(display)
, q(q)
{
s_allClients << this;
listener.notify = destroyListenerCallback;
wl_client_add_destroy_listener(c, &listener);
wl_client_get_credentials(client, &pid, &user, &group);
executablePath = QFileInfo(QStringLiteral("/proc/%1/exe").arg(pid)).symLinkTarget();
}
ClientConnectionPrivate::~ClientConnectionPrivate()
{
if (client) {
wl_list_remove(&listener.link);
}
s_allClients.removeAt(s_allClients.indexOf(this));
}
void ClientConnectionPrivate::destroyListenerCallback(wl_listener *listener, void *data)
{
Q_UNUSED(listener)
wl_client *client = reinterpret_cast<wl_client*>(data);
auto it = std::find_if(s_allClients.constBegin(), s_allClients.constEnd(),
[client](ClientConnectionPrivate *c) {
return c->client == client;
}
);
Q_ASSERT(it != s_allClients.constEnd());
auto p = (*it);
auto q = p->q;
emit q->aboutToBeDestroyed();
p->client = nullptr;
wl_list_remove(&p->listener.link);
emit q->disconnected(q);
q->deleteLater();
}
ClientConnection::ClientConnection(wl_client *c, Display *parent)
: QObject(parent)
, d(new ClientConnectionPrivate(c, parent, this))
{
}
ClientConnection::~ClientConnection() = default;
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void ClientConnection::flush()
{
if (!d->client) {
return;
}
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wl_client_flush(d->client);
}
void ClientConnection::destroy()
{
if (!d->client) {
return;
}
wl_client_destroy(d->client);
}
wl_resource *ClientConnection::createResource(const wl_interface *interface, quint32 version, quint32 id)
{
if (!d->client) {
return nullptr;
}
return wl_resource_create(d->client, interface, version, id);
}
wl_resource *ClientConnection::getResource(quint32 id)
{
if (!d->client) {
return nullptr;
}
return wl_client_get_object(d->client, id);
}
wl_client *ClientConnection::client() const
{
return d->client;
}
ClientConnection::operator wl_client*()
{
return d->client;
}
ClientConnection::operator wl_client*() const
{
return d->client;
}
Display *ClientConnection::display() const
{
return d->display;
}
gid_t ClientConnection::groupId() const
{
return d->group;
}
pid_t ClientConnection::processId() const
{
return d->pid;
}
uid_t ClientConnection::userId() const
{
return d->user;
}
QString ClientConnection::executablePath() const
{
return d->executablePath;
}
}