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142ca628 MAL |
1 | /* |
2 | * QEMU DBus display | |
3 | * | |
4 | * Copyright (c) 2021 Marc-André Lureau <marcandre.lureau@redhat.com> | |
5 | * | |
6 | * Permission is hereby granted, free of charge, to any person obtaining a copy | |
7 | * of this software and associated documentation files (the "Software"), to deal | |
8 | * in the Software without restriction, including without limitation the rights | |
9 | * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell | |
10 | * copies of the Software, and to permit persons to whom the Software is | |
11 | * furnished to do so, subject to the following conditions: | |
12 | * | |
13 | * The above copyright notice and this permission notice shall be included in | |
14 | * all copies or substantial portions of the Software. | |
15 | * | |
16 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR | |
17 | * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, | |
18 | * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL | |
19 | * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER | |
20 | * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, | |
21 | * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN | |
22 | * THE SOFTWARE. | |
23 | */ | |
24 | #include "qemu/osdep.h" | |
99997823 | 25 | #include "qemu/cutils.h" |
142ca628 | 26 | #include "qemu/dbus.h" |
ff1a5810 | 27 | #include "qemu/main-loop.h" |
142ca628 MAL |
28 | #include "qemu/option.h" |
29 | #include "qom/object_interfaces.h" | |
30 | #include "sysemu/sysemu.h" | |
99997823 | 31 | #include "ui/dbus-module.h" |
142ca628 MAL |
32 | #include "ui/egl-helpers.h" |
33 | #include "ui/egl-context.h" | |
739362d4 MAL |
34 | #include "audio/audio.h" |
35 | #include "audio/audio_int.h" | |
142ca628 MAL |
36 | #include "qapi/error.h" |
37 | #include "trace.h" | |
38 | ||
39 | #include "dbus.h" | |
40 | ||
99997823 MAL |
41 | static DBusDisplay *dbus_display; |
42 | ||
142ca628 MAL |
43 | static QEMUGLContext dbus_create_context(DisplayGLCtx *dgc, |
44 | QEMUGLParams *params) | |
45 | { | |
46 | eglMakeCurrent(qemu_egl_display, EGL_NO_SURFACE, EGL_NO_SURFACE, | |
47 | qemu_egl_rn_ctx); | |
48 | return qemu_egl_create_context(dgc, params); | |
49 | } | |
50 | ||
a62c4a17 MAL |
51 | static bool |
52 | dbus_is_compatible_dcl(DisplayGLCtx *dgc, | |
53 | DisplayChangeListener *dcl) | |
54 | { | |
417a2319 | 55 | return dcl->ops == &dbus_gl_dcl_ops || dcl->ops == &dbus_console_dcl_ops; |
a62c4a17 MAL |
56 | } |
57 | ||
589089fe MAL |
58 | static void |
59 | dbus_create_texture(DisplayGLCtx *ctx, DisplaySurface *surface) | |
60 | { | |
61 | surface_gl_create_texture(ctx->gls, surface); | |
62 | } | |
63 | ||
64 | static void | |
65 | dbus_destroy_texture(DisplayGLCtx *ctx, DisplaySurface *surface) | |
66 | { | |
67 | surface_gl_destroy_texture(ctx->gls, surface); | |
68 | } | |
69 | ||
70 | static void | |
71 | dbus_update_texture(DisplayGLCtx *ctx, DisplaySurface *surface, | |
72 | int x, int y, int w, int h) | |
73 | { | |
74 | surface_gl_update_texture(ctx->gls, surface, x, y, w, h); | |
75 | } | |
76 | ||
142ca628 | 77 | static const DisplayGLCtxOps dbus_gl_ops = { |
a62c4a17 | 78 | .dpy_gl_ctx_is_compatible_dcl = dbus_is_compatible_dcl, |
142ca628 MAL |
79 | .dpy_gl_ctx_create = dbus_create_context, |
80 | .dpy_gl_ctx_destroy = qemu_egl_destroy_context, | |
81 | .dpy_gl_ctx_make_current = qemu_egl_make_context_current, | |
589089fe MAL |
82 | .dpy_gl_ctx_create_texture = dbus_create_texture, |
83 | .dpy_gl_ctx_destroy_texture = dbus_destroy_texture, | |
84 | .dpy_gl_ctx_update_texture = dbus_update_texture, | |
142ca628 MAL |
85 | }; |
86 | ||
3e301c8d MAL |
87 | static NotifierList dbus_display_notifiers = |
88 | NOTIFIER_LIST_INITIALIZER(dbus_display_notifiers); | |
89 | ||
90 | void | |
91 | dbus_display_notifier_add(Notifier *notifier) | |
92 | { | |
93 | notifier_list_add(&dbus_display_notifiers, notifier); | |
94 | } | |
95 | ||
96 | static void | |
97 | dbus_display_notifier_remove(Notifier *notifier) | |
98 | { | |
99 | notifier_remove(notifier); | |
100 | } | |
101 | ||
102 | void | |
103 | dbus_display_notify(DBusDisplayEvent *event) | |
104 | { | |
105 | notifier_list_notify(&dbus_display_notifiers, event); | |
106 | } | |
107 | ||
142ca628 MAL |
108 | static void |
109 | dbus_display_init(Object *o) | |
110 | { | |
111 | DBusDisplay *dd = DBUS_DISPLAY(o); | |
112 | g_autoptr(GDBusObjectSkeleton) vm = NULL; | |
113 | ||
114 | dd->glctx.ops = &dbus_gl_ops; | |
589089fe MAL |
115 | if (display_opengl) { |
116 | dd->glctx.gls = qemu_gl_init_shader(); | |
117 | } | |
142ca628 MAL |
118 | dd->iface = qemu_dbus_display1_vm_skeleton_new(); |
119 | dd->consoles = g_ptr_array_new_with_free_func(g_object_unref); | |
120 | ||
121 | dd->server = g_dbus_object_manager_server_new(DBUS_DISPLAY1_ROOT); | |
122 | ||
123 | vm = g_dbus_object_skeleton_new(DBUS_DISPLAY1_ROOT "/VM"); | |
124 | g_dbus_object_skeleton_add_interface( | |
125 | vm, G_DBUS_INTERFACE_SKELETON(dd->iface)); | |
126 | g_dbus_object_manager_server_export(dd->server, vm); | |
ff1a5810 MAL |
127 | |
128 | dbus_clipboard_init(dd); | |
3e301c8d | 129 | dbus_chardev_init(dd); |
142ca628 MAL |
130 | } |
131 | ||
132 | static void | |
133 | dbus_display_finalize(Object *o) | |
134 | { | |
135 | DBusDisplay *dd = DBUS_DISPLAY(o); | |
136 | ||
3e301c8d MAL |
137 | if (dd->notifier.notify) { |
138 | dbus_display_notifier_remove(&dd->notifier); | |
139 | } | |
140 | ||
ff1a5810 MAL |
141 | qemu_clipboard_peer_unregister(&dd->clipboard_peer); |
142 | g_clear_object(&dd->clipboard); | |
143 | ||
142ca628 MAL |
144 | g_clear_object(&dd->server); |
145 | g_clear_pointer(&dd->consoles, g_ptr_array_unref); | |
99997823 MAL |
146 | if (dd->add_client_cancellable) { |
147 | g_cancellable_cancel(dd->add_client_cancellable); | |
148 | } | |
149 | g_clear_object(&dd->add_client_cancellable); | |
142ca628 MAL |
150 | g_clear_object(&dd->bus); |
151 | g_clear_object(&dd->iface); | |
152 | g_free(dd->dbus_addr); | |
739362d4 | 153 | g_free(dd->audiodev); |
589089fe | 154 | g_clear_pointer(&dd->glctx.gls, qemu_gl_fini_shader); |
99997823 | 155 | dbus_display = NULL; |
142ca628 MAL |
156 | } |
157 | ||
158 | static bool | |
159 | dbus_display_add_console(DBusDisplay *dd, int idx, Error **errp) | |
160 | { | |
161 | QemuConsole *con; | |
162 | DBusDisplayConsole *dbus_console; | |
163 | ||
164 | con = qemu_console_lookup_by_index(idx); | |
165 | assert(con); | |
166 | ||
167 | if (qemu_console_is_graphic(con) && | |
168 | dd->gl_mode != DISPLAYGL_MODE_OFF) { | |
169 | qemu_console_set_display_gl_ctx(con, &dd->glctx); | |
170 | } | |
171 | ||
172 | dbus_console = dbus_display_console_new(dd, con); | |
173 | g_ptr_array_insert(dd->consoles, idx, dbus_console); | |
174 | g_dbus_object_manager_server_export(dd->server, | |
175 | G_DBUS_OBJECT_SKELETON(dbus_console)); | |
176 | return true; | |
177 | } | |
178 | ||
179 | static void | |
180 | dbus_display_complete(UserCreatable *uc, Error **errp) | |
181 | { | |
182 | DBusDisplay *dd = DBUS_DISPLAY(uc); | |
183 | g_autoptr(GError) err = NULL; | |
184 | g_autofree char *uuid = qemu_uuid_unparse_strdup(&qemu_uuid); | |
185 | g_autoptr(GArray) consoles = NULL; | |
186 | GVariant *console_ids; | |
187 | int idx; | |
188 | ||
189 | if (!object_resolve_path_type("", TYPE_DBUS_DISPLAY, NULL)) { | |
190 | error_setg(errp, "There is already an instance of %s", | |
191 | TYPE_DBUS_DISPLAY); | |
192 | return; | |
193 | } | |
194 | ||
99997823 MAL |
195 | if (dd->p2p) { |
196 | /* wait for dbus_display_add_client() */ | |
197 | dbus_display = dd; | |
198 | } else if (dd->dbus_addr && *dd->dbus_addr) { | |
142ca628 MAL |
199 | dd->bus = g_dbus_connection_new_for_address_sync(dd->dbus_addr, |
200 | G_DBUS_CONNECTION_FLAGS_AUTHENTICATION_CLIENT | | |
201 | G_DBUS_CONNECTION_FLAGS_MESSAGE_BUS_CONNECTION, | |
202 | NULL, NULL, &err); | |
203 | } else { | |
204 | dd->bus = g_bus_get_sync(G_BUS_TYPE_SESSION, NULL, &err); | |
205 | } | |
206 | if (err) { | |
207 | error_setg(errp, "failed to connect to DBus: %s", err->message); | |
208 | return; | |
209 | } | |
210 | ||
739362d4 MAL |
211 | if (dd->audiodev && *dd->audiodev) { |
212 | AudioState *audio_state = audio_state_by_name(dd->audiodev); | |
213 | if (!audio_state) { | |
214 | error_setg(errp, "Audiodev '%s' not found", dd->audiodev); | |
215 | return; | |
216 | } | |
217 | if (!g_str_equal(audio_state->drv->name, "dbus")) { | |
218 | error_setg(errp, "Audiodev '%s' is not compatible with DBus", | |
219 | dd->audiodev); | |
220 | return; | |
221 | } | |
222 | audio_state->drv->set_dbus_server(audio_state, dd->server); | |
223 | } | |
142ca628 MAL |
224 | |
225 | consoles = g_array_new(FALSE, FALSE, sizeof(guint32)); | |
226 | for (idx = 0;; idx++) { | |
227 | if (!qemu_console_lookup_by_index(idx)) { | |
228 | break; | |
229 | } | |
230 | if (!dbus_display_add_console(dd, idx, errp)) { | |
231 | return; | |
232 | } | |
233 | g_array_append_val(consoles, idx); | |
234 | } | |
235 | ||
236 | console_ids = g_variant_new_from_data( | |
237 | G_VARIANT_TYPE("au"), | |
238 | consoles->data, consoles->len * sizeof(guint32), TRUE, | |
239 | (GDestroyNotify)g_array_unref, consoles); | |
240 | g_steal_pointer(&consoles); | |
241 | g_object_set(dd->iface, | |
242 | "name", qemu_name ?: "QEMU " QEMU_VERSION, | |
243 | "uuid", uuid, | |
244 | "console-ids", console_ids, | |
245 | NULL); | |
246 | ||
99997823 MAL |
247 | if (dd->bus) { |
248 | g_dbus_object_manager_server_set_connection(dd->server, dd->bus); | |
249 | g_bus_own_name_on_connection(dd->bus, "org.qemu", | |
250 | G_BUS_NAME_OWNER_FLAGS_NONE, | |
251 | NULL, NULL, NULL, NULL); | |
252 | } | |
253 | } | |
254 | ||
255 | static void | |
256 | dbus_display_add_client_ready(GObject *source_object, | |
257 | GAsyncResult *res, | |
258 | gpointer user_data) | |
259 | { | |
260 | g_autoptr(GError) err = NULL; | |
261 | g_autoptr(GDBusConnection) conn = NULL; | |
262 | ||
263 | g_clear_object(&dbus_display->add_client_cancellable); | |
264 | ||
265 | conn = g_dbus_connection_new_finish(res, &err); | |
266 | if (!conn) { | |
267 | error_printf("Failed to accept D-Bus client: %s", err->message); | |
268 | } | |
269 | ||
270 | g_dbus_object_manager_server_set_connection(dbus_display->server, conn); | |
271 | } | |
272 | ||
273 | ||
274 | static bool | |
275 | dbus_display_add_client(int csock, Error **errp) | |
276 | { | |
277 | g_autoptr(GError) err = NULL; | |
278 | g_autoptr(GSocket) socket = NULL; | |
279 | g_autoptr(GSocketConnection) conn = NULL; | |
280 | g_autofree char *guid = g_dbus_generate_guid(); | |
281 | ||
282 | if (!dbus_display) { | |
283 | error_setg(errp, "p2p connections not accepted in bus mode"); | |
284 | return false; | |
285 | } | |
286 | ||
287 | if (dbus_display->add_client_cancellable) { | |
288 | g_cancellable_cancel(dbus_display->add_client_cancellable); | |
289 | } | |
290 | ||
291 | socket = g_socket_new_from_fd(csock, &err); | |
292 | if (!socket) { | |
293 | error_setg(errp, "Failed to setup D-Bus socket: %s", err->message); | |
294 | return false; | |
295 | } | |
296 | ||
297 | conn = g_socket_connection_factory_create_connection(socket); | |
298 | ||
299 | dbus_display->add_client_cancellable = g_cancellable_new(); | |
300 | ||
301 | g_dbus_connection_new(G_IO_STREAM(conn), | |
302 | guid, | |
303 | G_DBUS_CONNECTION_FLAGS_AUTHENTICATION_SERVER, | |
304 | NULL, | |
305 | dbus_display->add_client_cancellable, | |
306 | dbus_display_add_client_ready, | |
307 | NULL); | |
308 | ||
309 | return true; | |
310 | } | |
311 | ||
312 | static bool | |
313 | get_dbus_p2p(Object *o, Error **errp) | |
314 | { | |
315 | DBusDisplay *dd = DBUS_DISPLAY(o); | |
316 | ||
317 | return dd->p2p; | |
318 | } | |
319 | ||
320 | static void | |
321 | set_dbus_p2p(Object *o, bool p2p, Error **errp) | |
322 | { | |
323 | DBusDisplay *dd = DBUS_DISPLAY(o); | |
324 | ||
325 | dd->p2p = p2p; | |
142ca628 MAL |
326 | } |
327 | ||
328 | static char * | |
329 | get_dbus_addr(Object *o, Error **errp) | |
330 | { | |
331 | DBusDisplay *dd = DBUS_DISPLAY(o); | |
332 | ||
333 | return g_strdup(dd->dbus_addr); | |
334 | } | |
335 | ||
336 | static void | |
337 | set_dbus_addr(Object *o, const char *str, Error **errp) | |
338 | { | |
339 | DBusDisplay *dd = DBUS_DISPLAY(o); | |
340 | ||
341 | g_free(dd->dbus_addr); | |
342 | dd->dbus_addr = g_strdup(str); | |
343 | } | |
344 | ||
739362d4 MAL |
345 | static char * |
346 | get_audiodev(Object *o, Error **errp) | |
347 | { | |
348 | DBusDisplay *dd = DBUS_DISPLAY(o); | |
349 | ||
350 | return g_strdup(dd->audiodev); | |
351 | } | |
352 | ||
353 | static void | |
354 | set_audiodev(Object *o, const char *str, Error **errp) | |
355 | { | |
356 | DBusDisplay *dd = DBUS_DISPLAY(o); | |
357 | ||
358 | g_free(dd->audiodev); | |
359 | dd->audiodev = g_strdup(str); | |
360 | } | |
361 | ||
ff1a5810 | 362 | |
142ca628 MAL |
363 | static int |
364 | get_gl_mode(Object *o, Error **errp) | |
365 | { | |
366 | DBusDisplay *dd = DBUS_DISPLAY(o); | |
367 | ||
368 | return dd->gl_mode; | |
369 | } | |
370 | ||
371 | static void | |
372 | set_gl_mode(Object *o, int val, Error **errp) | |
373 | { | |
374 | DBusDisplay *dd = DBUS_DISPLAY(o); | |
375 | ||
376 | dd->gl_mode = val; | |
377 | } | |
378 | ||
379 | static void | |
380 | dbus_display_class_init(ObjectClass *oc, void *data) | |
381 | { | |
382 | UserCreatableClass *ucc = USER_CREATABLE_CLASS(oc); | |
383 | ||
384 | ucc->complete = dbus_display_complete; | |
99997823 | 385 | object_class_property_add_bool(oc, "p2p", get_dbus_p2p, set_dbus_p2p); |
142ca628 | 386 | object_class_property_add_str(oc, "addr", get_dbus_addr, set_dbus_addr); |
739362d4 | 387 | object_class_property_add_str(oc, "audiodev", get_audiodev, set_audiodev); |
142ca628 MAL |
388 | object_class_property_add_enum(oc, "gl-mode", |
389 | "DisplayGLMode", &DisplayGLMode_lookup, | |
390 | get_gl_mode, set_gl_mode); | |
391 | } | |
392 | ||
7f767ca3 MAL |
393 | #define TYPE_CHARDEV_VC "chardev-vc" |
394 | ||
395 | typedef struct DBusVCClass { | |
396 | DBusChardevClass parent_class; | |
397 | ||
398 | void (*parent_parse)(QemuOpts *opts, ChardevBackend *b, Error **errp); | |
399 | } DBusVCClass; | |
400 | ||
401 | DECLARE_CLASS_CHECKERS(DBusVCClass, DBUS_VC, | |
402 | TYPE_CHARDEV_VC) | |
403 | ||
404 | static void | |
405 | dbus_vc_parse(QemuOpts *opts, ChardevBackend *backend, | |
406 | Error **errp) | |
407 | { | |
408 | DBusVCClass *klass = DBUS_VC_CLASS(object_class_by_name(TYPE_CHARDEV_VC)); | |
409 | const char *name = qemu_opt_get(opts, "name"); | |
410 | const char *id = qemu_opts_id(opts); | |
411 | ||
412 | if (name == NULL) { | |
413 | if (g_str_has_prefix(id, "compat_monitor")) { | |
414 | name = "org.qemu.monitor.hmp.0"; | |
415 | } else if (g_str_has_prefix(id, "serial")) { | |
416 | name = "org.qemu.console.serial.0"; | |
417 | } else { | |
418 | name = ""; | |
419 | } | |
420 | if (!qemu_opt_set(opts, "name", name, errp)) { | |
421 | return; | |
422 | } | |
423 | } | |
424 | ||
425 | klass->parent_parse(opts, backend, errp); | |
426 | } | |
427 | ||
428 | static void | |
429 | dbus_vc_class_init(ObjectClass *oc, void *data) | |
430 | { | |
431 | DBusVCClass *klass = DBUS_VC_CLASS(oc); | |
432 | ChardevClass *cc = CHARDEV_CLASS(oc); | |
433 | ||
434 | klass->parent_parse = cc->parse; | |
435 | cc->parse = dbus_vc_parse; | |
436 | } | |
437 | ||
438 | static const TypeInfo dbus_vc_type_info = { | |
439 | .name = TYPE_CHARDEV_VC, | |
440 | .parent = TYPE_CHARDEV_DBUS, | |
fc94d115 | 441 | .class_size = sizeof(DBusVCClass), |
7f767ca3 MAL |
442 | .class_init = dbus_vc_class_init, |
443 | }; | |
444 | ||
142ca628 MAL |
445 | static void |
446 | early_dbus_init(DisplayOptions *opts) | |
447 | { | |
448 | DisplayGLMode mode = opts->has_gl ? opts->gl : DISPLAYGL_MODE_OFF; | |
449 | ||
450 | if (mode != DISPLAYGL_MODE_OFF) { | |
451 | if (egl_rendernode_init(opts->u.dbus.rendernode, mode) < 0) { | |
452 | error_report("dbus: render node init failed"); | |
453 | exit(1); | |
454 | } | |
455 | ||
456 | display_opengl = 1; | |
457 | } | |
7f767ca3 MAL |
458 | |
459 | type_register(&dbus_vc_type_info); | |
142ca628 MAL |
460 | } |
461 | ||
462 | static void | |
463 | dbus_init(DisplayState *ds, DisplayOptions *opts) | |
464 | { | |
465 | DisplayGLMode mode = opts->has_gl ? opts->gl : DISPLAYGL_MODE_OFF; | |
466 | ||
99997823 MAL |
467 | if (opts->u.dbus.addr && opts->u.dbus.p2p) { |
468 | error_report("dbus: can't accept both addr=X and p2p=yes options"); | |
469 | exit(1); | |
470 | } | |
471 | ||
472 | using_dbus_display = 1; | |
473 | ||
142ca628 MAL |
474 | object_new_with_props(TYPE_DBUS_DISPLAY, |
475 | object_get_objects_root(), | |
476 | "dbus-display", &error_fatal, | |
477 | "addr", opts->u.dbus.addr ?: "", | |
739362d4 | 478 | "audiodev", opts->u.dbus.audiodev ?: "", |
142ca628 | 479 | "gl-mode", DisplayGLMode_str(mode), |
99997823 | 480 | "p2p", yes_no(opts->u.dbus.p2p), |
142ca628 MAL |
481 | NULL); |
482 | } | |
483 | ||
484 | static const TypeInfo dbus_display_info = { | |
485 | .name = TYPE_DBUS_DISPLAY, | |
486 | .parent = TYPE_OBJECT, | |
487 | .instance_size = sizeof(DBusDisplay), | |
488 | .instance_init = dbus_display_init, | |
489 | .instance_finalize = dbus_display_finalize, | |
490 | .class_init = dbus_display_class_init, | |
491 | .interfaces = (InterfaceInfo[]) { | |
492 | { TYPE_USER_CREATABLE }, | |
493 | { } | |
494 | } | |
495 | }; | |
496 | ||
497 | static QemuDisplay qemu_display_dbus = { | |
498 | .type = DISPLAY_TYPE_DBUS, | |
499 | .early_init = early_dbus_init, | |
500 | .init = dbus_init, | |
501 | }; | |
502 | ||
503 | static void register_dbus(void) | |
504 | { | |
99997823 MAL |
505 | qemu_dbus_display = (struct QemuDBusDisplayOps) { |
506 | .add_client = dbus_display_add_client, | |
507 | }; | |
142ca628 MAL |
508 | type_register_static(&dbus_display_info); |
509 | qemu_display_register(&qemu_display_dbus); | |
510 | } | |
511 | ||
512 | type_init(register_dbus); | |
513 | ||
514 | #ifdef CONFIG_OPENGL | |
515 | module_dep("ui-opengl"); | |
516 | #endif |