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qemu/ui/dbus-console.c
Marc-André Lureau 99997823bb ui/dbus: add p2p=on/off option 
Add an option to use direct connections instead of via the bus. Clients
are accepted with QMP add_client.

This allows to provide the D-Bus display without a bus. It also
simplifies the testing setup (some CI have issues to setup a D-Bus bus
in a container).

Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Acked-by: Gerd Hoffmann <kraxel@redhat.com>
2021-12-21 10:50:22 +04:00

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/*
* QEMU DBus display console
*
* Copyright (c) 2021 Marc-André Lureau <marcandre.lureau@redhat.com>
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
* THE SOFTWARE.
*/
#include "qemu/osdep.h"
#include "qapi/error.h"
#include "ui/input.h"
#include "ui/kbd-state.h"
#include "trace.h"
#include <gio/gunixfdlist.h>
#include "dbus.h"
struct _DBusDisplayConsole {
GDBusObjectSkeleton parent_instance;
DisplayChangeListener dcl;
DBusDisplay *display;
QemuConsole *con;
GHashTable *listeners;
QemuDBusDisplay1Console *iface;
QemuDBusDisplay1Keyboard *iface_kbd;
QKbdState *kbd;
QemuDBusDisplay1Mouse *iface_mouse;
gboolean last_set;
guint last_x;
guint last_y;
Notifier mouse_mode_notifier;
};
G_DEFINE_TYPE(DBusDisplayConsole,
dbus_display_console,
G_TYPE_DBUS_OBJECT_SKELETON)
static void
dbus_display_console_set_size(DBusDisplayConsole *ddc,
uint32_t width, uint32_t height)
{
g_object_set(ddc->iface,
"width", width,
"height", height,
NULL);
}
static void
dbus_gfx_switch(DisplayChangeListener *dcl,
struct DisplaySurface *new_surface)
{
DBusDisplayConsole *ddc = container_of(dcl, DBusDisplayConsole, dcl);
dbus_display_console_set_size(ddc,
surface_width(new_surface),
surface_height(new_surface));
}
static void
dbus_gfx_update(DisplayChangeListener *dcl,
int x, int y, int w, int h)
{
}
static void
dbus_gl_scanout_disable(DisplayChangeListener *dcl)
{
}
static void
dbus_gl_scanout_texture(DisplayChangeListener *dcl,
uint32_t tex_id,
bool backing_y_0_top,
uint32_t backing_width,
uint32_t backing_height,
uint32_t x, uint32_t y,
uint32_t w, uint32_t h)
{
DBusDisplayConsole *ddc = container_of(dcl, DBusDisplayConsole, dcl);
dbus_display_console_set_size(ddc, w, h);
}
static void
dbus_gl_scanout_dmabuf(DisplayChangeListener *dcl,
QemuDmaBuf *dmabuf)
{
DBusDisplayConsole *ddc = container_of(dcl, DBusDisplayConsole, dcl);
dbus_display_console_set_size(ddc,
dmabuf->width,
dmabuf->height);
}
static void
dbus_gl_scanout_update(DisplayChangeListener *dcl,
uint32_t x, uint32_t y,
uint32_t w, uint32_t h)
{
}
static const DisplayChangeListenerOps dbus_console_dcl_ops = {
.dpy_name = "dbus-console",
.dpy_gfx_switch = dbus_gfx_switch,
.dpy_gfx_update = dbus_gfx_update,
.dpy_gl_scanout_disable = dbus_gl_scanout_disable,
.dpy_gl_scanout_texture = dbus_gl_scanout_texture,
.dpy_gl_scanout_dmabuf = dbus_gl_scanout_dmabuf,
.dpy_gl_update = dbus_gl_scanout_update,
};
static void
dbus_display_console_init(DBusDisplayConsole *object)
{
DBusDisplayConsole *ddc = DBUS_DISPLAY_CONSOLE(object);
ddc->listeners = g_hash_table_new_full(g_str_hash, g_str_equal,
NULL, g_object_unref);
ddc->dcl.ops = &dbus_console_dcl_ops;
}
static void
dbus_display_console_dispose(GObject *object)
{
DBusDisplayConsole *ddc = DBUS_DISPLAY_CONSOLE(object);
unregister_displaychangelistener(&ddc->dcl);
g_clear_object(&ddc->iface_kbd);
g_clear_object(&ddc->iface);
g_clear_pointer(&ddc->listeners, g_hash_table_unref);
g_clear_pointer(&ddc->kbd, qkbd_state_free);
G_OBJECT_CLASS(dbus_display_console_parent_class)->dispose(object);
}
static void
dbus_display_console_class_init(DBusDisplayConsoleClass *klass)
{
GObjectClass *gobject_class = G_OBJECT_CLASS(klass);
gobject_class->dispose = dbus_display_console_dispose;
}
static void
listener_vanished_cb(DBusDisplayListener *listener)
{
DBusDisplayConsole *ddc = dbus_display_listener_get_console(listener);
const char *name = dbus_display_listener_get_bus_name(listener);
trace_dbus_listener_vanished(name);
g_hash_table_remove(ddc->listeners, name);
qkbd_state_lift_all_keys(ddc->kbd);
}
static gboolean
dbus_console_set_ui_info(DBusDisplayConsole *ddc,
GDBusMethodInvocation *invocation,
guint16 arg_width_mm,
guint16 arg_height_mm,
gint arg_xoff,
gint arg_yoff,
guint arg_width,
guint arg_height)
{
QemuUIInfo info = {
.width_mm = arg_width_mm,
.height_mm = arg_height_mm,
.xoff = arg_xoff,
.yoff = arg_yoff,
.width = arg_width,
.height = arg_height,
};
if (!dpy_ui_info_supported(ddc->con)) {
g_dbus_method_invocation_return_error(invocation,
DBUS_DISPLAY_ERROR,
DBUS_DISPLAY_ERROR_UNSUPPORTED,
"SetUIInfo is not supported");
return DBUS_METHOD_INVOCATION_HANDLED;
}
dpy_set_ui_info(ddc->con, &info, false);
qemu_dbus_display1_console_complete_set_uiinfo(ddc->iface, invocation);
return DBUS_METHOD_INVOCATION_HANDLED;
}
static gboolean
dbus_console_register_listener(DBusDisplayConsole *ddc,
GDBusMethodInvocation *invocation,
GUnixFDList *fd_list,
GVariant *arg_listener)
{
const char *sender = g_dbus_method_invocation_get_sender(invocation);
GDBusConnection *listener_conn;
g_autoptr(GError) err = NULL;
g_autoptr(GSocket) socket = NULL;
g_autoptr(GSocketConnection) socket_conn = NULL;
g_autofree char *guid = g_dbus_generate_guid();
DBusDisplayListener *listener;
int fd;
if (sender && g_hash_table_contains(ddc->listeners, sender)) {
g_dbus_method_invocation_return_error(
invocation,
DBUS_DISPLAY_ERROR,
DBUS_DISPLAY_ERROR_INVALID,
"`%s` is already registered!",
sender);
return DBUS_METHOD_INVOCATION_HANDLED;
}
fd = g_unix_fd_list_get(fd_list, g_variant_get_handle(arg_listener), &err);
if (err) {
g_dbus_method_invocation_return_error(
invocation,
DBUS_DISPLAY_ERROR,
DBUS_DISPLAY_ERROR_FAILED,
"Couldn't get peer fd: %s", err->message);
return DBUS_METHOD_INVOCATION_HANDLED;
}
socket = g_socket_new_from_fd(fd, &err);
if (err) {
g_dbus_method_invocation_return_error(
invocation,
DBUS_DISPLAY_ERROR,
DBUS_DISPLAY_ERROR_FAILED,
"Couldn't make a socket: %s", err->message);
close(fd);
return DBUS_METHOD_INVOCATION_HANDLED;
}
socket_conn = g_socket_connection_factory_create_connection(socket);
qemu_dbus_display1_console_complete_register_listener(
ddc->iface, invocation, NULL);
listener_conn = g_dbus_connection_new_sync(
G_IO_STREAM(socket_conn),
guid,
G_DBUS_CONNECTION_FLAGS_AUTHENTICATION_SERVER,
NULL, NULL, &err);
if (err) {
error_report("Failed to setup peer connection: %s", err->message);
return DBUS_METHOD_INVOCATION_HANDLED;
}
listener = dbus_display_listener_new(sender, listener_conn, ddc);
if (!listener) {
return DBUS_METHOD_INVOCATION_HANDLED;
}
g_hash_table_insert(ddc->listeners,
(gpointer)dbus_display_listener_get_bus_name(listener),
listener);
g_object_connect(listener_conn,
"swapped-signal::closed", listener_vanished_cb, listener,
NULL);
trace_dbus_registered_listener(sender);
return DBUS_METHOD_INVOCATION_HANDLED;
}
static gboolean
dbus_kbd_press(DBusDisplayConsole *ddc,
GDBusMethodInvocation *invocation,
guint arg_keycode)
{
QKeyCode qcode = qemu_input_key_number_to_qcode(arg_keycode);
trace_dbus_kbd_press(arg_keycode);
qkbd_state_key_event(ddc->kbd, qcode, true);
qemu_dbus_display1_keyboard_complete_press(ddc->iface_kbd, invocation);
return DBUS_METHOD_INVOCATION_HANDLED;
}
static gboolean
dbus_kbd_release(DBusDisplayConsole *ddc,
GDBusMethodInvocation *invocation,
guint arg_keycode)
{
QKeyCode qcode = qemu_input_key_number_to_qcode(arg_keycode);
trace_dbus_kbd_release(arg_keycode);
qkbd_state_key_event(ddc->kbd, qcode, false);
qemu_dbus_display1_keyboard_complete_release(ddc->iface_kbd, invocation);
return DBUS_METHOD_INVOCATION_HANDLED;
}
static void
dbus_kbd_qemu_leds_updated(void *data, int ledstate)
{
DBusDisplayConsole *ddc = DBUS_DISPLAY_CONSOLE(data);
qemu_dbus_display1_keyboard_set_modifiers(ddc->iface_kbd, ledstate);
}
static gboolean
dbus_mouse_rel_motion(DBusDisplayConsole *ddc,
GDBusMethodInvocation *invocation,
int dx, int dy)
{
trace_dbus_mouse_rel_motion(dx, dy);
if (qemu_input_is_absolute()) {
g_dbus_method_invocation_return_error(
invocation, DBUS_DISPLAY_ERROR,
DBUS_DISPLAY_ERROR_INVALID,
"Mouse is not relative");
return DBUS_METHOD_INVOCATION_HANDLED;
}
qemu_input_queue_rel(ddc->con, INPUT_AXIS_X, dx);
qemu_input_queue_rel(ddc->con, INPUT_AXIS_Y, dy);
qemu_input_event_sync();
qemu_dbus_display1_mouse_complete_rel_motion(ddc->iface_mouse,
invocation);
return DBUS_METHOD_INVOCATION_HANDLED;
}
static gboolean
dbus_mouse_set_pos(DBusDisplayConsole *ddc,
GDBusMethodInvocation *invocation,
guint x, guint y)
{
int width, height;
trace_dbus_mouse_set_pos(x, y);
if (!qemu_input_is_absolute()) {
g_dbus_method_invocation_return_error(
invocation, DBUS_DISPLAY_ERROR,
DBUS_DISPLAY_ERROR_INVALID,
"Mouse is not absolute");
return DBUS_METHOD_INVOCATION_HANDLED;
}
width = qemu_console_get_width(ddc->con, 0);
height = qemu_console_get_height(ddc->con, 0);
if (x >= width || y >= height) {
g_dbus_method_invocation_return_error(
invocation, DBUS_DISPLAY_ERROR,
DBUS_DISPLAY_ERROR_INVALID,
"Invalid mouse position");
return DBUS_METHOD_INVOCATION_HANDLED;
}
qemu_input_queue_abs(ddc->con, INPUT_AXIS_X, x, 0, width);
qemu_input_queue_abs(ddc->con, INPUT_AXIS_Y, y, 0, height);
qemu_input_event_sync();
qemu_dbus_display1_mouse_complete_set_abs_position(ddc->iface_mouse,
invocation);
return DBUS_METHOD_INVOCATION_HANDLED;
}
static gboolean
dbus_mouse_press(DBusDisplayConsole *ddc,
GDBusMethodInvocation *invocation,
guint button)
{
trace_dbus_mouse_press(button);
qemu_input_queue_btn(ddc->con, button, true);
qemu_input_event_sync();
qemu_dbus_display1_mouse_complete_press(ddc->iface_mouse, invocation);
return DBUS_METHOD_INVOCATION_HANDLED;
}
static gboolean
dbus_mouse_release(DBusDisplayConsole *ddc,
GDBusMethodInvocation *invocation,
guint button)
{
trace_dbus_mouse_release(button);
qemu_input_queue_btn(ddc->con, button, false);
qemu_input_event_sync();
qemu_dbus_display1_mouse_complete_release(ddc->iface_mouse, invocation);
return DBUS_METHOD_INVOCATION_HANDLED;
}
static void
dbus_mouse_mode_change(Notifier *notify, void *data)
{
DBusDisplayConsole *ddc =
container_of(notify, DBusDisplayConsole, mouse_mode_notifier);
g_object_set(ddc->iface_mouse,
"is-absolute", qemu_input_is_absolute(),
NULL);
}
int dbus_display_console_get_index(DBusDisplayConsole *ddc)
{
return qemu_console_get_index(ddc->con);
}
DBusDisplayConsole *
dbus_display_console_new(DBusDisplay *display, QemuConsole *con)
{
g_autofree char *path = NULL;
g_autofree char *label = NULL;
char device_addr[256] = "";
DBusDisplayConsole *ddc;
int idx;
assert(display);
assert(con);
label = qemu_console_get_label(con);
idx = qemu_console_get_index(con);
path = g_strdup_printf(DBUS_DISPLAY1_ROOT "/Console_%d", idx);
ddc = g_object_new(DBUS_DISPLAY_TYPE_CONSOLE,
"g-object-path", path,
NULL);
ddc->display = display;
ddc->con = con;
/* handle errors, and skip non graphics? */
qemu_console_fill_device_address(
con, device_addr, sizeof(device_addr), NULL);
ddc->iface = qemu_dbus_display1_console_skeleton_new();
g_object_set(ddc->iface,
"label", label,
"type", qemu_console_is_graphic(con) ? "Graphic" : "Text",
"head", qemu_console_get_head(con),
"width", qemu_console_get_width(con, 0),
"height", qemu_console_get_height(con, 0),
"device-address", device_addr,
NULL);
g_object_connect(ddc->iface,
"swapped-signal::handle-register-listener",
dbus_console_register_listener, ddc,
"swapped-signal::handle-set-uiinfo",
dbus_console_set_ui_info, ddc,
NULL);
g_dbus_object_skeleton_add_interface(G_DBUS_OBJECT_SKELETON(ddc),
G_DBUS_INTERFACE_SKELETON(ddc->iface));
ddc->kbd = qkbd_state_init(con);
ddc->iface_kbd = qemu_dbus_display1_keyboard_skeleton_new();
qemu_add_led_event_handler(dbus_kbd_qemu_leds_updated, ddc);
g_object_connect(ddc->iface_kbd,
"swapped-signal::handle-press", dbus_kbd_press, ddc,
"swapped-signal::handle-release", dbus_kbd_release, ddc,
NULL);
g_dbus_object_skeleton_add_interface(G_DBUS_OBJECT_SKELETON(ddc),
G_DBUS_INTERFACE_SKELETON(ddc->iface_kbd));
ddc->iface_mouse = qemu_dbus_display1_mouse_skeleton_new();
g_object_connect(ddc->iface_mouse,
"swapped-signal::handle-set-abs-position", dbus_mouse_set_pos, ddc,
"swapped-signal::handle-rel-motion", dbus_mouse_rel_motion, ddc,
"swapped-signal::handle-press", dbus_mouse_press, ddc,
"swapped-signal::handle-release", dbus_mouse_release, ddc,
NULL);
g_dbus_object_skeleton_add_interface(G_DBUS_OBJECT_SKELETON(ddc),
G_DBUS_INTERFACE_SKELETON(ddc->iface_mouse));
register_displaychangelistener(&ddc->dcl);
ddc->mouse_mode_notifier.notify = dbus_mouse_mode_change;
qemu_add_mouse_mode_change_notifier(&ddc->mouse_mode_notifier);
return ddc;
}
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