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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 | ||
51 | static const DisplayGLCtxOps dbus_gl_ops = { | |
52 | .compatible_dcl = &dbus_gl_dcl_ops, | |
53 | .dpy_gl_ctx_create = dbus_create_context, | |
54 | .dpy_gl_ctx_destroy = qemu_egl_destroy_context, | |
55 | .dpy_gl_ctx_make_current = qemu_egl_make_context_current, | |
56 | }; | |
57 | ||
3e301c8d MAL |
58 | static NotifierList dbus_display_notifiers = |
59 | NOTIFIER_LIST_INITIALIZER(dbus_display_notifiers); | |
60 | ||
61 | void | |
62 | dbus_display_notifier_add(Notifier *notifier) | |
63 | { | |
64 | notifier_list_add(&dbus_display_notifiers, notifier); | |
65 | } | |
66 | ||
67 | static void | |
68 | dbus_display_notifier_remove(Notifier *notifier) | |
69 | { | |
70 | notifier_remove(notifier); | |
71 | } | |
72 | ||
73 | void | |
74 | dbus_display_notify(DBusDisplayEvent *event) | |
75 | { | |
76 | notifier_list_notify(&dbus_display_notifiers, event); | |
77 | } | |
78 | ||
142ca628 MAL |
79 | static void |
80 | dbus_display_init(Object *o) | |
81 | { | |
82 | DBusDisplay *dd = DBUS_DISPLAY(o); | |
83 | g_autoptr(GDBusObjectSkeleton) vm = NULL; | |
84 | ||
85 | dd->glctx.ops = &dbus_gl_ops; | |
86 | dd->iface = qemu_dbus_display1_vm_skeleton_new(); | |
87 | dd->consoles = g_ptr_array_new_with_free_func(g_object_unref); | |
88 | ||
89 | dd->server = g_dbus_object_manager_server_new(DBUS_DISPLAY1_ROOT); | |
90 | ||
91 | vm = g_dbus_object_skeleton_new(DBUS_DISPLAY1_ROOT "/VM"); | |
92 | g_dbus_object_skeleton_add_interface( | |
93 | vm, G_DBUS_INTERFACE_SKELETON(dd->iface)); | |
94 | g_dbus_object_manager_server_export(dd->server, vm); | |
ff1a5810 MAL |
95 | |
96 | dbus_clipboard_init(dd); | |
3e301c8d | 97 | dbus_chardev_init(dd); |
142ca628 MAL |
98 | } |
99 | ||
100 | static void | |
101 | dbus_display_finalize(Object *o) | |
102 | { | |
103 | DBusDisplay *dd = DBUS_DISPLAY(o); | |
104 | ||
3e301c8d MAL |
105 | if (dd->notifier.notify) { |
106 | dbus_display_notifier_remove(&dd->notifier); | |
107 | } | |
108 | ||
ff1a5810 MAL |
109 | qemu_clipboard_peer_unregister(&dd->clipboard_peer); |
110 | g_clear_object(&dd->clipboard); | |
111 | ||
142ca628 MAL |
112 | g_clear_object(&dd->server); |
113 | g_clear_pointer(&dd->consoles, g_ptr_array_unref); | |
99997823 MAL |
114 | if (dd->add_client_cancellable) { |
115 | g_cancellable_cancel(dd->add_client_cancellable); | |
116 | } | |
117 | g_clear_object(&dd->add_client_cancellable); | |
142ca628 MAL |
118 | g_clear_object(&dd->bus); |
119 | g_clear_object(&dd->iface); | |
120 | g_free(dd->dbus_addr); | |
739362d4 | 121 | g_free(dd->audiodev); |
99997823 | 122 | dbus_display = NULL; |
142ca628 MAL |
123 | } |
124 | ||
125 | static bool | |
126 | dbus_display_add_console(DBusDisplay *dd, int idx, Error **errp) | |
127 | { | |
128 | QemuConsole *con; | |
129 | DBusDisplayConsole *dbus_console; | |
130 | ||
131 | con = qemu_console_lookup_by_index(idx); | |
132 | assert(con); | |
133 | ||
134 | if (qemu_console_is_graphic(con) && | |
135 | dd->gl_mode != DISPLAYGL_MODE_OFF) { | |
136 | qemu_console_set_display_gl_ctx(con, &dd->glctx); | |
137 | } | |
138 | ||
139 | dbus_console = dbus_display_console_new(dd, con); | |
140 | g_ptr_array_insert(dd->consoles, idx, dbus_console); | |
141 | g_dbus_object_manager_server_export(dd->server, | |
142 | G_DBUS_OBJECT_SKELETON(dbus_console)); | |
143 | return true; | |
144 | } | |
145 | ||
146 | static void | |
147 | dbus_display_complete(UserCreatable *uc, Error **errp) | |
148 | { | |
149 | DBusDisplay *dd = DBUS_DISPLAY(uc); | |
150 | g_autoptr(GError) err = NULL; | |
151 | g_autofree char *uuid = qemu_uuid_unparse_strdup(&qemu_uuid); | |
152 | g_autoptr(GArray) consoles = NULL; | |
153 | GVariant *console_ids; | |
154 | int idx; | |
155 | ||
156 | if (!object_resolve_path_type("", TYPE_DBUS_DISPLAY, NULL)) { | |
157 | error_setg(errp, "There is already an instance of %s", | |
158 | TYPE_DBUS_DISPLAY); | |
159 | return; | |
160 | } | |
161 | ||
99997823 MAL |
162 | if (dd->p2p) { |
163 | /* wait for dbus_display_add_client() */ | |
164 | dbus_display = dd; | |
165 | } else if (dd->dbus_addr && *dd->dbus_addr) { | |
142ca628 MAL |
166 | dd->bus = g_dbus_connection_new_for_address_sync(dd->dbus_addr, |
167 | G_DBUS_CONNECTION_FLAGS_AUTHENTICATION_CLIENT | | |
168 | G_DBUS_CONNECTION_FLAGS_MESSAGE_BUS_CONNECTION, | |
169 | NULL, NULL, &err); | |
170 | } else { | |
171 | dd->bus = g_bus_get_sync(G_BUS_TYPE_SESSION, NULL, &err); | |
172 | } | |
173 | if (err) { | |
174 | error_setg(errp, "failed to connect to DBus: %s", err->message); | |
175 | return; | |
176 | } | |
177 | ||
739362d4 MAL |
178 | if (dd->audiodev && *dd->audiodev) { |
179 | AudioState *audio_state = audio_state_by_name(dd->audiodev); | |
180 | if (!audio_state) { | |
181 | error_setg(errp, "Audiodev '%s' not found", dd->audiodev); | |
182 | return; | |
183 | } | |
184 | if (!g_str_equal(audio_state->drv->name, "dbus")) { | |
185 | error_setg(errp, "Audiodev '%s' is not compatible with DBus", | |
186 | dd->audiodev); | |
187 | return; | |
188 | } | |
189 | audio_state->drv->set_dbus_server(audio_state, dd->server); | |
190 | } | |
142ca628 MAL |
191 | |
192 | consoles = g_array_new(FALSE, FALSE, sizeof(guint32)); | |
193 | for (idx = 0;; idx++) { | |
194 | if (!qemu_console_lookup_by_index(idx)) { | |
195 | break; | |
196 | } | |
197 | if (!dbus_display_add_console(dd, idx, errp)) { | |
198 | return; | |
199 | } | |
200 | g_array_append_val(consoles, idx); | |
201 | } | |
202 | ||
203 | console_ids = g_variant_new_from_data( | |
204 | G_VARIANT_TYPE("au"), | |
205 | consoles->data, consoles->len * sizeof(guint32), TRUE, | |
206 | (GDestroyNotify)g_array_unref, consoles); | |
207 | g_steal_pointer(&consoles); | |
208 | g_object_set(dd->iface, | |
209 | "name", qemu_name ?: "QEMU " QEMU_VERSION, | |
210 | "uuid", uuid, | |
211 | "console-ids", console_ids, | |
212 | NULL); | |
213 | ||
99997823 MAL |
214 | if (dd->bus) { |
215 | g_dbus_object_manager_server_set_connection(dd->server, dd->bus); | |
216 | g_bus_own_name_on_connection(dd->bus, "org.qemu", | |
217 | G_BUS_NAME_OWNER_FLAGS_NONE, | |
218 | NULL, NULL, NULL, NULL); | |
219 | } | |
220 | } | |
221 | ||
222 | static void | |
223 | dbus_display_add_client_ready(GObject *source_object, | |
224 | GAsyncResult *res, | |
225 | gpointer user_data) | |
226 | { | |
227 | g_autoptr(GError) err = NULL; | |
228 | g_autoptr(GDBusConnection) conn = NULL; | |
229 | ||
230 | g_clear_object(&dbus_display->add_client_cancellable); | |
231 | ||
232 | conn = g_dbus_connection_new_finish(res, &err); | |
233 | if (!conn) { | |
234 | error_printf("Failed to accept D-Bus client: %s", err->message); | |
235 | } | |
236 | ||
237 | g_dbus_object_manager_server_set_connection(dbus_display->server, conn); | |
238 | } | |
239 | ||
240 | ||
241 | static bool | |
242 | dbus_display_add_client(int csock, Error **errp) | |
243 | { | |
244 | g_autoptr(GError) err = NULL; | |
245 | g_autoptr(GSocket) socket = NULL; | |
246 | g_autoptr(GSocketConnection) conn = NULL; | |
247 | g_autofree char *guid = g_dbus_generate_guid(); | |
248 | ||
249 | if (!dbus_display) { | |
250 | error_setg(errp, "p2p connections not accepted in bus mode"); | |
251 | return false; | |
252 | } | |
253 | ||
254 | if (dbus_display->add_client_cancellable) { | |
255 | g_cancellable_cancel(dbus_display->add_client_cancellable); | |
256 | } | |
257 | ||
258 | socket = g_socket_new_from_fd(csock, &err); | |
259 | if (!socket) { | |
260 | error_setg(errp, "Failed to setup D-Bus socket: %s", err->message); | |
261 | return false; | |
262 | } | |
263 | ||
264 | conn = g_socket_connection_factory_create_connection(socket); | |
265 | ||
266 | dbus_display->add_client_cancellable = g_cancellable_new(); | |
267 | ||
268 | g_dbus_connection_new(G_IO_STREAM(conn), | |
269 | guid, | |
270 | G_DBUS_CONNECTION_FLAGS_AUTHENTICATION_SERVER, | |
271 | NULL, | |
272 | dbus_display->add_client_cancellable, | |
273 | dbus_display_add_client_ready, | |
274 | NULL); | |
275 | ||
276 | return true; | |
277 | } | |
278 | ||
279 | static bool | |
280 | get_dbus_p2p(Object *o, Error **errp) | |
281 | { | |
282 | DBusDisplay *dd = DBUS_DISPLAY(o); | |
283 | ||
284 | return dd->p2p; | |
285 | } | |
286 | ||
287 | static void | |
288 | set_dbus_p2p(Object *o, bool p2p, Error **errp) | |
289 | { | |
290 | DBusDisplay *dd = DBUS_DISPLAY(o); | |
291 | ||
292 | dd->p2p = p2p; | |
142ca628 MAL |
293 | } |
294 | ||
295 | static char * | |
296 | get_dbus_addr(Object *o, Error **errp) | |
297 | { | |
298 | DBusDisplay *dd = DBUS_DISPLAY(o); | |
299 | ||
300 | return g_strdup(dd->dbus_addr); | |
301 | } | |
302 | ||
303 | static void | |
304 | set_dbus_addr(Object *o, const char *str, Error **errp) | |
305 | { | |
306 | DBusDisplay *dd = DBUS_DISPLAY(o); | |
307 | ||
308 | g_free(dd->dbus_addr); | |
309 | dd->dbus_addr = g_strdup(str); | |
310 | } | |
311 | ||
739362d4 MAL |
312 | static char * |
313 | get_audiodev(Object *o, Error **errp) | |
314 | { | |
315 | DBusDisplay *dd = DBUS_DISPLAY(o); | |
316 | ||
317 | return g_strdup(dd->audiodev); | |
318 | } | |
319 | ||
320 | static void | |
321 | set_audiodev(Object *o, const char *str, Error **errp) | |
322 | { | |
323 | DBusDisplay *dd = DBUS_DISPLAY(o); | |
324 | ||
325 | g_free(dd->audiodev); | |
326 | dd->audiodev = g_strdup(str); | |
327 | } | |
328 | ||
ff1a5810 | 329 | |
142ca628 MAL |
330 | static int |
331 | get_gl_mode(Object *o, Error **errp) | |
332 | { | |
333 | DBusDisplay *dd = DBUS_DISPLAY(o); | |
334 | ||
335 | return dd->gl_mode; | |
336 | } | |
337 | ||
338 | static void | |
339 | set_gl_mode(Object *o, int val, Error **errp) | |
340 | { | |
341 | DBusDisplay *dd = DBUS_DISPLAY(o); | |
342 | ||
343 | dd->gl_mode = val; | |
344 | } | |
345 | ||
346 | static void | |
347 | dbus_display_class_init(ObjectClass *oc, void *data) | |
348 | { | |
349 | UserCreatableClass *ucc = USER_CREATABLE_CLASS(oc); | |
350 | ||
351 | ucc->complete = dbus_display_complete; | |
99997823 | 352 | object_class_property_add_bool(oc, "p2p", get_dbus_p2p, set_dbus_p2p); |
142ca628 | 353 | object_class_property_add_str(oc, "addr", get_dbus_addr, set_dbus_addr); |
739362d4 | 354 | object_class_property_add_str(oc, "audiodev", get_audiodev, set_audiodev); |
142ca628 MAL |
355 | object_class_property_add_enum(oc, "gl-mode", |
356 | "DisplayGLMode", &DisplayGLMode_lookup, | |
357 | get_gl_mode, set_gl_mode); | |
358 | } | |
359 | ||
7f767ca3 MAL |
360 | #define TYPE_CHARDEV_VC "chardev-vc" |
361 | ||
362 | typedef struct DBusVCClass { | |
363 | DBusChardevClass parent_class; | |
364 | ||
365 | void (*parent_parse)(QemuOpts *opts, ChardevBackend *b, Error **errp); | |
366 | } DBusVCClass; | |
367 | ||
368 | DECLARE_CLASS_CHECKERS(DBusVCClass, DBUS_VC, | |
369 | TYPE_CHARDEV_VC) | |
370 | ||
371 | static void | |
372 | dbus_vc_parse(QemuOpts *opts, ChardevBackend *backend, | |
373 | Error **errp) | |
374 | { | |
375 | DBusVCClass *klass = DBUS_VC_CLASS(object_class_by_name(TYPE_CHARDEV_VC)); | |
376 | const char *name = qemu_opt_get(opts, "name"); | |
377 | const char *id = qemu_opts_id(opts); | |
378 | ||
379 | if (name == NULL) { | |
380 | if (g_str_has_prefix(id, "compat_monitor")) { | |
381 | name = "org.qemu.monitor.hmp.0"; | |
382 | } else if (g_str_has_prefix(id, "serial")) { | |
383 | name = "org.qemu.console.serial.0"; | |
384 | } else { | |
385 | name = ""; | |
386 | } | |
387 | if (!qemu_opt_set(opts, "name", name, errp)) { | |
388 | return; | |
389 | } | |
390 | } | |
391 | ||
392 | klass->parent_parse(opts, backend, errp); | |
393 | } | |
394 | ||
395 | static void | |
396 | dbus_vc_class_init(ObjectClass *oc, void *data) | |
397 | { | |
398 | DBusVCClass *klass = DBUS_VC_CLASS(oc); | |
399 | ChardevClass *cc = CHARDEV_CLASS(oc); | |
400 | ||
401 | klass->parent_parse = cc->parse; | |
402 | cc->parse = dbus_vc_parse; | |
403 | } | |
404 | ||
405 | static const TypeInfo dbus_vc_type_info = { | |
406 | .name = TYPE_CHARDEV_VC, | |
407 | .parent = TYPE_CHARDEV_DBUS, | |
fc94d115 | 408 | .class_size = sizeof(DBusVCClass), |
7f767ca3 MAL |
409 | .class_init = dbus_vc_class_init, |
410 | }; | |
411 | ||
142ca628 MAL |
412 | static void |
413 | early_dbus_init(DisplayOptions *opts) | |
414 | { | |
415 | DisplayGLMode mode = opts->has_gl ? opts->gl : DISPLAYGL_MODE_OFF; | |
416 | ||
417 | if (mode != DISPLAYGL_MODE_OFF) { | |
418 | if (egl_rendernode_init(opts->u.dbus.rendernode, mode) < 0) { | |
419 | error_report("dbus: render node init failed"); | |
420 | exit(1); | |
421 | } | |
422 | ||
423 | display_opengl = 1; | |
424 | } | |
7f767ca3 MAL |
425 | |
426 | type_register(&dbus_vc_type_info); | |
142ca628 MAL |
427 | } |
428 | ||
429 | static void | |
430 | dbus_init(DisplayState *ds, DisplayOptions *opts) | |
431 | { | |
432 | DisplayGLMode mode = opts->has_gl ? opts->gl : DISPLAYGL_MODE_OFF; | |
433 | ||
99997823 MAL |
434 | if (opts->u.dbus.addr && opts->u.dbus.p2p) { |
435 | error_report("dbus: can't accept both addr=X and p2p=yes options"); | |
436 | exit(1); | |
437 | } | |
438 | ||
439 | using_dbus_display = 1; | |
440 | ||
142ca628 MAL |
441 | object_new_with_props(TYPE_DBUS_DISPLAY, |
442 | object_get_objects_root(), | |
443 | "dbus-display", &error_fatal, | |
444 | "addr", opts->u.dbus.addr ?: "", | |
739362d4 | 445 | "audiodev", opts->u.dbus.audiodev ?: "", |
142ca628 | 446 | "gl-mode", DisplayGLMode_str(mode), |
99997823 | 447 | "p2p", yes_no(opts->u.dbus.p2p), |
142ca628 MAL |
448 | NULL); |
449 | } | |
450 | ||
451 | static const TypeInfo dbus_display_info = { | |
452 | .name = TYPE_DBUS_DISPLAY, | |
453 | .parent = TYPE_OBJECT, | |
454 | .instance_size = sizeof(DBusDisplay), | |
455 | .instance_init = dbus_display_init, | |
456 | .instance_finalize = dbus_display_finalize, | |
457 | .class_init = dbus_display_class_init, | |
458 | .interfaces = (InterfaceInfo[]) { | |
459 | { TYPE_USER_CREATABLE }, | |
460 | { } | |
461 | } | |
462 | }; | |
463 | ||
464 | static QemuDisplay qemu_display_dbus = { | |
465 | .type = DISPLAY_TYPE_DBUS, | |
466 | .early_init = early_dbus_init, | |
467 | .init = dbus_init, | |
468 | }; | |
469 | ||
470 | static void register_dbus(void) | |
471 | { | |
99997823 MAL |
472 | qemu_dbus_display = (struct QemuDBusDisplayOps) { |
473 | .add_client = dbus_display_add_client, | |
474 | }; | |
142ca628 MAL |
475 | type_register_static(&dbus_display_info); |
476 | qemu_display_register(&qemu_display_dbus); | |
477 | } | |
478 | ||
479 | type_init(register_dbus); | |
480 | ||
481 | #ifdef CONFIG_OPENGL | |
482 | module_dep("ui-opengl"); | |
483 | #endif |