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kernel32: Check for invalid flags in codepage conversion functions.
[wine.git] / server / queue.c
blobc479b388bd673013dd4b0a915d37a721ed967e7e
1 /*
2 * Server-side message queues
3 *
4 * Copyright (C) 2000 Alexandre Julliard
5 *
6 * This library is free software; you can redistribute it and/or
7 * modify it under the terms of the GNU Lesser General Public
8 * License as published by the Free Software Foundation; either
9 * version 2.1 of the License, or (at your option) any later version.
10 *
11 * This library is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14 * Lesser General Public License for more details.
15 *
16 * You should have received a copy of the GNU Lesser General Public
17 * License along with this library; if not, write to the Free Software
18 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
19 */
20
21 #include "config.h"
22 #include "wine/port.h"
23
24 #include <assert.h>
25 #include <stdarg.h>
26 #include <stdio.h>
27 #include <stdlib.h>
28 #ifdef HAVE_POLL_H
29 # include <poll.h>
30 #endif
31
32 #include "ntstatus.h"
33 #define WIN32_NO_STATUS
34 #include "windef.h"
35 #include "winbase.h"
36 #include "wingdi.h"
37 #include "winuser.h"
38 #include "winternl.h"
39
40 #include "handle.h"
41 #include "file.h"
42 #include "thread.h"
43 #include "process.h"
44 #include "request.h"
45 #include "user.h"
46
47 #define WM_NCMOUSEFIRST WM_NCMOUSEMOVE
48 #define WM_NCMOUSELAST (WM_NCMOUSEFIRST+(WM_MOUSELAST-WM_MOUSEFIRST))
49
50 enum message_kind { SEND_MESSAGE, POST_MESSAGE };
51 #define NB_MSG_KINDS (POST_MESSAGE+1)
52
53
54 struct message_result
55 {
56 struct list sender_entry; /* entry in sender list */
57 struct message *msg; /* message the result is for */
58 struct message_result *recv_next; /* next in receiver list */
59 struct msg_queue *sender; /* sender queue */
60 struct msg_queue *receiver; /* receiver queue */
61 int replied; /* has it been replied to? */
62 unsigned int error; /* error code to pass back to sender */
63 lparam_t result; /* reply result */
64 struct message *hardware_msg; /* hardware message if low-level hook result */
65 struct desktop *desktop; /* desktop for hardware message */
66 struct message *callback_msg; /* message to queue for callback */
67 void *data; /* message reply data */
68 unsigned int data_size; /* size of message reply data */
69 struct timeout_user *timeout; /* result timeout */
70 };
71
72 struct message
73 {
74 struct list entry; /* entry in message list */
75 enum message_type type; /* message type */
76 user_handle_t win; /* window handle */
77 unsigned int msg; /* message code */
78 lparam_t wparam; /* parameters */
79 lparam_t lparam; /* parameters */
80 int x; /* message position */
81 int y;
82 unsigned int time; /* message time */
83 void *data; /* message data for sent messages */
84 unsigned int data_size; /* size of message data */
85 unsigned int unique_id; /* unique id for nested hw message waits */
86 struct message_result *result; /* result in sender queue */
87 };
88
89 struct timer
90 {
91 struct list entry; /* entry in timer list */
92 timeout_t when; /* next expiration */
93 unsigned int rate; /* timer rate in ms */
94 user_handle_t win; /* window handle */
95 unsigned int msg; /* message to post */
96 lparam_t id; /* timer id */
97 lparam_t lparam; /* lparam for message */
98 };
99
100 struct thread_input
101 {
102 struct object obj; /* object header */
103 struct desktop *desktop; /* desktop that this thread input belongs to */
104 user_handle_t focus; /* focus window */
105 user_handle_t capture; /* capture window */
106 user_handle_t active; /* active window */
107 user_handle_t menu_owner; /* current menu owner window */
108 user_handle_t move_size; /* current moving/resizing window */
109 user_handle_t caret; /* caret window */
110 rectangle_t caret_rect; /* caret rectangle */
111 int caret_hide; /* caret hide count */
112 int caret_state; /* caret on/off state */
113 user_handle_t cursor; /* current cursor */
114 int cursor_count; /* cursor show count */
115 struct list msg_list; /* list of hardware messages */
116 unsigned char keystate[256]; /* state of each key */
117 };
118
119 struct msg_queue
120 {
121 struct object obj; /* object header */
122 struct fd *fd; /* optional file descriptor to poll */
123 unsigned int wake_bits; /* wakeup bits */
124 unsigned int wake_mask; /* wakeup mask */
125 unsigned int changed_bits; /* changed wakeup bits */
126 unsigned int changed_mask; /* changed wakeup mask */
127 int paint_count; /* pending paint messages count */
128 int hotkey_count; /* pending hotkey messages count */
129 int quit_message; /* is there a pending quit message? */
130 int exit_code; /* exit code of pending quit message */
131 int cursor_count; /* per-queue cursor show count */
132 struct list msg_list[NB_MSG_KINDS]; /* lists of messages */
133 struct list send_result; /* stack of sent messages waiting for result */
134 struct list callback_result; /* list of callback messages waiting for result */
135 struct message_result *recv_result; /* stack of received messages waiting for result */
136 struct list pending_timers; /* list of pending timers */
137 struct list expired_timers; /* list of expired timers */
138 lparam_t next_timer_id; /* id for the next timer with a 0 window */
139 struct timeout_user *timeout; /* timeout for next timer to expire */
140 struct thread_input *input; /* thread input descriptor */
141 struct hook_table *hooks; /* hook table */
142 timeout_t last_get_msg; /* time of last get message call */
143 };
144
145 struct hotkey
146 {
147 struct list entry; /* entry in desktop hotkey list */
148 struct msg_queue *queue; /* queue owning this hotkey */
149 user_handle_t win; /* window handle */
150 int id; /* hotkey id */
151 unsigned int vkey; /* virtual key code */
152 unsigned int flags; /* key modifiers */
153 };
154
155 static void msg_queue_dump( struct object *obj, int verbose );
156 static int msg_queue_add_queue( struct object *obj, struct wait_queue_entry *entry );
157 static void msg_queue_remove_queue( struct object *obj, struct wait_queue_entry *entry );
158 static int msg_queue_signaled( struct object *obj, struct wait_queue_entry *entry );
159 static void msg_queue_satisfied( struct object *obj, struct wait_queue_entry *entry );
160 static void msg_queue_destroy( struct object *obj );
161 static void msg_queue_poll_event( struct fd *fd, int event );
162 static void thread_input_dump( struct object *obj, int verbose );
163 static void thread_input_destroy( struct object *obj );
164 static void timer_callback( void *private );
165
166 static const struct object_ops msg_queue_ops =
167 {
168 sizeof(struct msg_queue), /* size */
169 msg_queue_dump, /* dump */
170 no_get_type, /* get_type */
171 msg_queue_add_queue, /* add_queue */
172 msg_queue_remove_queue, /* remove_queue */
173 msg_queue_signaled, /* signaled */
174 msg_queue_satisfied, /* satisfied */
175 no_signal, /* signal */
176 no_get_fd, /* get_fd */
177 no_map_access, /* map_access */
178 default_get_sd, /* get_sd */
179 default_set_sd, /* set_sd */
180 no_lookup_name, /* lookup_name */
181 no_link_name, /* link_name */
182 NULL, /* unlink_name */
183 no_open_file, /* open_file */
184 no_close_handle, /* close_handle */
185 msg_queue_destroy /* destroy */
186 };
187
188 static const struct fd_ops msg_queue_fd_ops =
189 {
190 NULL, /* get_poll_events */
191 msg_queue_poll_event, /* poll_event */
192 NULL, /* flush */
193 NULL, /* get_fd_type */
194 NULL, /* ioctl */
195 NULL, /* queue_async */
196 NULL, /* reselect_async */
197 NULL /* cancel async */
198 };
199
200
201 static const struct object_ops thread_input_ops =
202 {
203 sizeof(struct thread_input), /* size */
204 thread_input_dump, /* dump */
205 no_get_type, /* get_type */
206 no_add_queue, /* add_queue */
207 NULL, /* remove_queue */
208 NULL, /* signaled */
209 NULL, /* satisfied */
210 no_signal, /* signal */
211 no_get_fd, /* get_fd */
212 no_map_access, /* map_access */
213 default_get_sd, /* get_sd */
214 default_set_sd, /* set_sd */
215 no_lookup_name, /* lookup_name */
216 no_link_name, /* link_name */
217 NULL, /* unlink_name */
218 no_open_file, /* open_file */
219 no_close_handle, /* close_handle */
220 thread_input_destroy /* destroy */
221 };
222
223 /* pointer to input structure of foreground thread */
224 static unsigned int last_input_time;
225
226 static void queue_hardware_message( struct desktop *desktop, struct message *msg, int always_queue );
227 static void free_message( struct message *msg );
228
229 /* set the caret window in a given thread input */
230 static void set_caret_window( struct thread_input *input, user_handle_t win )
231 {
232 if (!win || win != input->caret)
233 {
234 input->caret_rect.left = 0;
235 input->caret_rect.top = 0;
236 input->caret_rect.right = 0;
237 input->caret_rect.bottom = 0;
238 }
239 input->caret = win;
240 input->caret_hide = 1;
241 input->caret_state = 0;
242 }
243
244 /* create a thread input object */
245 static struct thread_input *create_thread_input( struct thread *thread )
246 {
247 struct thread_input *input;
248
249 if ((input = alloc_object( &thread_input_ops )))
250 {
251 input->focus = 0;
252 input->capture = 0;
253 input->active = 0;
254 input->menu_owner = 0;
255 input->move_size = 0;
256 input->cursor = 0;
257 input->cursor_count = 0;
258 list_init( &input->msg_list );
259 set_caret_window( input, 0 );
260 memset( input->keystate, 0, sizeof(input->keystate) );
261
262 if (!(input->desktop = get_thread_desktop( thread, 0 /* FIXME: access rights */ )))
263 {
264 release_object( input );
265 return NULL;
266 }
267 }
268 return input;
269 }
270
271 /* create a message queue object */
272 static struct msg_queue *create_msg_queue( struct thread *thread, struct thread_input *input )
273 {
274 struct thread_input *new_input = NULL;
275 struct msg_queue *queue;
276 int i;
277
278 if (!input)
279 {
280 if (!(new_input = create_thread_input( thread ))) return NULL;
281 input = new_input;
282 }
283
284 if ((queue = alloc_object( &msg_queue_ops )))
285 {
286 queue->fd = NULL;
287 queue->wake_bits = 0;
288 queue->wake_mask = 0;
289 queue->changed_bits = 0;
290 queue->changed_mask = 0;
291 queue->paint_count = 0;
292 queue->hotkey_count = 0;
293 queue->quit_message = 0;
294 queue->cursor_count = 0;
295 queue->recv_result = NULL;
296 queue->next_timer_id = 0x7fff;
297 queue->timeout = NULL;
298 queue->input = (struct thread_input *)grab_object( input );
299 queue->hooks = NULL;
300 queue->last_get_msg = current_time;
301 list_init( &queue->send_result );
302 list_init( &queue->callback_result );
303 list_init( &queue->pending_timers );
304 list_init( &queue->expired_timers );
305 for (i = 0; i < NB_MSG_KINDS; i++) list_init( &queue->msg_list[i] );
306
307 thread->queue = queue;
308 }
309 if (new_input) release_object( new_input );
310 return queue;
311 }
312
313 /* free the message queue of a thread at thread exit */
314 void free_msg_queue( struct thread *thread )
315 {
316 remove_thread_hooks( thread );
317 if (!thread->queue) return;
318 release_object( thread->queue );
319 thread->queue = NULL;
320 }
321
322 /* change the thread input data of a given thread */
323 static int assign_thread_input( struct thread *thread, struct thread_input *new_input )
324 {
325 struct msg_queue *queue = thread->queue;
326
327 if (!queue)
328 {
329 thread->queue = create_msg_queue( thread, new_input );
330 return thread->queue != NULL;
331 }
332 if (queue->input)
333 {
334 queue->input->cursor_count -= queue->cursor_count;
335 release_object( queue->input );
336 }
337 queue->input = (struct thread_input *)grab_object( new_input );
338 new_input->cursor_count += queue->cursor_count;
339 return 1;
340 }
341
342 /* set the cursor position and queue the corresponding mouse message */
343 static void set_cursor_pos( struct desktop *desktop, int x, int y )
344 {
345 struct hardware_msg_data *msg_data;
346 struct message *msg;
347
348 if (!(msg = mem_alloc( sizeof(*msg) ))) return;
349 if (!(msg_data = mem_alloc( sizeof(*msg_data) )))
350 {
351 free( msg );
352 return;
353 }
354 memset( msg_data, 0, sizeof(*msg_data) );
355
356 msg->type = MSG_HARDWARE;
357 msg->win = 0;
358 msg->msg = WM_MOUSEMOVE;
359 msg->wparam = 0;
360 msg->lparam = 0;
361 msg->x = x;
362 msg->y = y;
363 msg->time = get_tick_count();
364 msg->result = NULL;
365 msg->data = msg_data;
366 msg->data_size = sizeof(*msg_data);
367 queue_hardware_message( desktop, msg, 1 );
368 }
369
370 /* retrieve default position and time for synthesized messages */
371 static void get_message_defaults( struct msg_queue *queue, int *x, int *y, unsigned int *time )
372 {
373 struct desktop *desktop = queue->input->desktop;
374
375 *x = desktop->cursor.x;
376 *y = desktop->cursor.y;
377 *time = get_tick_count();
378 }
379
380 /* set the cursor clip rectangle */
381 static void set_clip_rectangle( struct desktop *desktop, const rectangle_t *rect, int send_clip_msg )
382 {
383 rectangle_t top_rect;
384 int x, y;
385
386 get_top_window_rectangle( desktop, &top_rect );
387 if (rect)
388 {
389 rectangle_t new_rect = *rect;
390 if (new_rect.left < top_rect.left) new_rect.left = top_rect.left;
391 if (new_rect.right > top_rect.right) new_rect.right = top_rect.right;
392 if (new_rect.top < top_rect.top) new_rect.top = top_rect.top;
393 if (new_rect.bottom > top_rect.bottom) new_rect.bottom = top_rect.bottom;
394 if (new_rect.left > new_rect.right || new_rect.top > new_rect.bottom) new_rect = top_rect;
395 desktop->cursor.clip = new_rect;
396 }
397 else desktop->cursor.clip = top_rect;
398
399 if (desktop->cursor.clip_msg && send_clip_msg)
400 post_desktop_message( desktop, desktop->cursor.clip_msg, rect != NULL, 0 );
401
402 /* warp the mouse to be inside the clip rect */
403 x = min( max( desktop->cursor.x, desktop->cursor.clip.left ), desktop->cursor.clip.right-1 );
404 y = min( max( desktop->cursor.y, desktop->cursor.clip.top ), desktop->cursor.clip.bottom-1 );
405 if (x != desktop->cursor.x || y != desktop->cursor.y) set_cursor_pos( desktop, x, y );
406 }
407
408 /* change the foreground input and reset the cursor clip rect */
409 static void set_foreground_input( struct desktop *desktop, struct thread_input *input )
410 {
411 if (desktop->foreground_input == input) return;
412 set_clip_rectangle( desktop, NULL, 1 );
413 desktop->foreground_input = input;
414 }
415
416 /* get the hook table for a given thread */
417 struct hook_table *get_queue_hooks( struct thread *thread )
418 {
419 if (!thread->queue) return NULL;
420 return thread->queue->hooks;
421 }
422
423 /* set the hook table for a given thread, allocating the queue if needed */
424 void set_queue_hooks( struct thread *thread, struct hook_table *hooks )
425 {
426 struct msg_queue *queue = thread->queue;
427 if (!queue && !(queue = create_msg_queue( thread, NULL ))) return;
428 if (queue->hooks) release_object( queue->hooks );
429 queue->hooks = hooks;
430 }
431
432 /* check the queue status */
433 static inline int is_signaled( struct msg_queue *queue )
434 {
435 return ((queue->wake_bits & queue->wake_mask) || (queue->changed_bits & queue->changed_mask));
436 }
437
438 /* set some queue bits */
439 static inline void set_queue_bits( struct msg_queue *queue, unsigned int bits )
440 {
441 queue->wake_bits |= bits;
442 queue->changed_bits |= bits;
443 if (is_signaled( queue )) wake_up( &queue->obj, 0 );
444 }
445
446 /* clear some queue bits */
447 static inline void clear_queue_bits( struct msg_queue *queue, unsigned int bits )
448 {
449 queue->wake_bits &= ~bits;
450 queue->changed_bits &= ~bits;
451 }
452
453 /* check whether msg is a keyboard message */
454 static inline int is_keyboard_msg( struct message *msg )
455 {
456 return (msg->msg >= WM_KEYFIRST && msg->msg <= WM_KEYLAST);
457 }
458
459 /* check if message is matched by the filter */
460 static inline int check_msg_filter( unsigned int msg, unsigned int first, unsigned int last )
461 {
462 return (msg >= first && msg <= last);
463 }
464
465 /* check whether a message filter contains at least one potential hardware message */
466 static inline int filter_contains_hw_range( unsigned int first, unsigned int last )
467 {
468 /* hardware message ranges are (in numerical order):
469 * WM_NCMOUSEFIRST .. WM_NCMOUSELAST
470 * WM_INPUT_DEVICE_CHANGE .. WM_KEYLAST
471 * WM_MOUSEFIRST .. WM_MOUSELAST
472 */
473 if (last < WM_NCMOUSEFIRST) return 0;
474 if (first > WM_NCMOUSELAST && last < WM_INPUT_DEVICE_CHANGE) return 0;
475 if (first > WM_KEYLAST && last < WM_MOUSEFIRST) return 0;
476 if (first > WM_MOUSELAST) return 0;
477 return 1;
478 }
479
480 /* get the QS_* bit corresponding to a given hardware message */
481 static inline int get_hardware_msg_bit( struct message *msg )
482 {
483 if (msg->msg == WM_INPUT_DEVICE_CHANGE || msg->msg == WM_INPUT) return QS_RAWINPUT;
484 if (msg->msg == WM_MOUSEMOVE || msg->msg == WM_NCMOUSEMOVE) return QS_MOUSEMOVE;
485 if (is_keyboard_msg( msg )) return QS_KEY;
486 return QS_MOUSEBUTTON;
487 }
488
489 /* get the current thread queue, creating it if needed */
490 static inline struct msg_queue *get_current_queue(void)
491 {
492 struct msg_queue *queue = current->queue;
493 if (!queue) queue = create_msg_queue( current, NULL );
494 return queue;
495 }
496
497 /* get a (pseudo-)unique id to tag hardware messages */
498 static inline unsigned int get_unique_id(void)
499 {
500 static unsigned int id;
501 if (!++id) id = 1; /* avoid an id of 0 */
502 return id;
503 }
504
505 /* try to merge a message with the last in the list; return 1 if successful */
506 static int merge_message( struct thread_input *input, const struct message *msg )
507 {
508 struct message *prev;
509 struct list *ptr;
510
511 if (msg->msg != WM_MOUSEMOVE) return 0;
512 for (ptr = list_tail( &input->msg_list ); ptr; ptr = list_prev( &input->msg_list, ptr ))
513 {
514 prev = LIST_ENTRY( ptr, struct message, entry );
515 if (prev->msg != WM_INPUT) break;
516 }
517 if (!ptr) return 0;
518 if (prev->result) return 0;
519 if (prev->win && msg->win && prev->win != msg->win) return 0;
520 if (prev->msg != msg->msg) return 0;
521 if (prev->type != msg->type) return 0;
522 /* now we can merge it */
523 prev->wparam = msg->wparam;
524 prev->lparam = msg->lparam;
525 prev->x = msg->x;
526 prev->y = msg->y;
527 prev->time = msg->time;
528 if (msg->type == MSG_HARDWARE && prev->data && msg->data)
529 {
530 struct hardware_msg_data *prev_data = prev->data;
531 struct hardware_msg_data *msg_data = msg->data;
532 prev_data->info = msg_data->info;
533 }
534 list_remove( ptr );
535 list_add_tail( &input->msg_list, ptr );
536 return 1;
537 }
538
539 /* free a result structure */
540 static void free_result( struct message_result *result )
541 {
542 if (result->timeout) remove_timeout_user( result->timeout );
543 free( result->data );
544 if (result->callback_msg) free_message( result->callback_msg );
545 if (result->hardware_msg) free_message( result->hardware_msg );
546 if (result->desktop) release_object( result->desktop );
547 free( result );
548 }
549
550 /* remove the result from the sender list it is on */
551 static inline void remove_result_from_sender( struct message_result *result )
552 {
553 assert( result->sender );
554
555 list_remove( &result->sender_entry );
556 result->sender = NULL;
557 if (!result->receiver) free_result( result );
558 }
559
560 /* store the message result in the appropriate structure */
561 static void store_message_result( struct message_result *res, lparam_t result, unsigned int error )
562 {
563 res->result = result;
564 res->error = error;
565 res->replied = 1;
566 if (res->timeout)
567 {
568 remove_timeout_user( res->timeout );
569 res->timeout = NULL;
570 }
571
572 if (res->hardware_msg)
573 {
574 if (!error && result) /* rejected by the hook */
575 free_message( res->hardware_msg );
576 else
577 queue_hardware_message( res->desktop, res->hardware_msg, 0 );
578
579 res->hardware_msg = NULL;
580 }
581
582 if (res->sender)
583 {
584 if (res->callback_msg)
585 {
586 /* queue the callback message in the sender queue */
587 struct callback_msg_data *data = res->callback_msg->data;
588 data->result = result;
589 list_add_tail( &res->sender->msg_list[SEND_MESSAGE], &res->callback_msg->entry );
590 set_queue_bits( res->sender, QS_SENDMESSAGE );
591 res->callback_msg = NULL;
592 remove_result_from_sender( res );
593 }
594 else
595 {
596 /* wake sender queue if waiting on this result */
597 if (list_head(&res->sender->send_result) == &res->sender_entry)
598 set_queue_bits( res->sender, QS_SMRESULT );
599 }
600 }
601 else if (!res->receiver) free_result( res );
602 }
603
604 /* free a message when deleting a queue or window */
605 static void free_message( struct message *msg )
606 {
607 struct message_result *result = msg->result;
608 if (result)
609 {
610 result->msg = NULL;
611 result->receiver = NULL;
612 store_message_result( result, 0, STATUS_ACCESS_DENIED /*FIXME*/ );
613 }
614 free( msg->data );
615 free( msg );
616 }
617
618 /* remove (and free) a message from a message list */
619 static void remove_queue_message( struct msg_queue *queue, struct message *msg,
620 enum message_kind kind )
621 {
622 list_remove( &msg->entry );
623 switch(kind)
624 {
625 case SEND_MESSAGE:
626 if (list_empty( &queue->msg_list[kind] )) clear_queue_bits( queue, QS_SENDMESSAGE );
627 break;
628 case POST_MESSAGE:
629 if (list_empty( &queue->msg_list[kind] ) && !queue->quit_message)
630 clear_queue_bits( queue, QS_POSTMESSAGE|QS_ALLPOSTMESSAGE );
631 if (msg->msg == WM_HOTKEY && --queue->hotkey_count == 0)
632 clear_queue_bits( queue, QS_HOTKEY );
633 break;
634 }
635 free_message( msg );
636 }
637
638 /* message timed out without getting a reply */
639 static void result_timeout( void *private )
640 {
641 struct message_result *result = private;
642
643 assert( !result->replied );
644
645 result->timeout = NULL;
646
647 if (result->msg) /* not received yet */
648 {
649 struct message *msg = result->msg;
650
651 result->msg = NULL;
652 msg->result = NULL;
653 remove_queue_message( result->receiver, msg, SEND_MESSAGE );
654 result->receiver = NULL;
655 }
656 store_message_result( result, 0, STATUS_TIMEOUT );
657 }
658
659 /* allocate and fill a message result structure */
660 static struct message_result *alloc_message_result( struct msg_queue *send_queue,
661 struct msg_queue *recv_queue,
662 struct message *msg, timeout_t timeout )
663 {
664 struct message_result *result = mem_alloc( sizeof(*result) );
665 if (result)
666 {
667 result->msg = msg;
668 result->sender = send_queue;
669 result->receiver = recv_queue;
670 result->replied = 0;
671 result->data = NULL;
672 result->data_size = 0;
673 result->timeout = NULL;
674 result->hardware_msg = NULL;
675 result->desktop = NULL;
676 result->callback_msg = NULL;
677
678 if (msg->type == MSG_CALLBACK)
679 {
680 struct message *callback_msg = mem_alloc( sizeof(*callback_msg) );
681
682 if (!callback_msg)
683 {
684 free( result );
685 return NULL;
686 }
687 callback_msg->type = MSG_CALLBACK_RESULT;
688 callback_msg->win = msg->win;
689 callback_msg->msg = msg->msg;
690 callback_msg->wparam = 0;
691 callback_msg->lparam = 0;
692 callback_msg->time = get_tick_count();
693 callback_msg->result = NULL;
694 /* steal the data from the original message */
695 callback_msg->data = msg->data;
696 callback_msg->data_size = msg->data_size;
697 msg->data = NULL;
698 msg->data_size = 0;
699
700 result->callback_msg = callback_msg;
701 list_add_head( &send_queue->callback_result, &result->sender_entry );
702 }
703 else if (send_queue)
704 {
705 list_add_head( &send_queue->send_result, &result->sender_entry );
706 clear_queue_bits( send_queue, QS_SMRESULT );
707 }
708
709 if (timeout != TIMEOUT_INFINITE)
710 result->timeout = add_timeout_user( timeout, result_timeout, result );
711 }
712 return result;
713 }
714
715 /* receive a message, removing it from the sent queue */
716 static void receive_message( struct msg_queue *queue, struct message *msg,
717 struct get_message_reply *reply )
718 {
719 struct message_result *result = msg->result;
720
721 reply->total = msg->data_size;
722 if (msg->data_size > get_reply_max_size())
723 {
724 set_error( STATUS_BUFFER_OVERFLOW );
725 return;
726 }
727 reply->type = msg->type;
728 reply->win = msg->win;
729 reply->msg = msg->msg;
730 reply->wparam = msg->wparam;
731 reply->lparam = msg->lparam;
732 reply->x = msg->x;
733 reply->y = msg->y;
734 reply->time = msg->time;
735
736 if (msg->data) set_reply_data_ptr( msg->data, msg->data_size );
737
738 list_remove( &msg->entry );
739 /* put the result on the receiver result stack */
740 if (result)
741 {
742 result->msg = NULL;
743 result->recv_next = queue->recv_result;
744 queue->recv_result = result;
745 }
746 free( msg );
747 if (list_empty( &queue->msg_list[SEND_MESSAGE] )) clear_queue_bits( queue, QS_SENDMESSAGE );
748 }
749
750 /* set the result of the current received message */
751 static void reply_message( struct msg_queue *queue, lparam_t result,
752 unsigned int error, int remove, const void *data, data_size_t len )
753 {
754 struct message_result *res = queue->recv_result;
755
756 if (remove)
757 {
758 queue->recv_result = res->recv_next;
759 res->receiver = NULL;
760 if (!res->sender && !res->hardware_msg) /* no one waiting for it */
761 {
762 free_result( res );
763 return;
764 }
765 }
766 if (!res->replied)
767 {
768 if (len && (res->data = memdup( data, len ))) res->data_size = len;
769 store_message_result( res, result, error );
770 }
771 }
772
773 static int match_window( user_handle_t win, user_handle_t msg_win )
774 {
775 if (!win) return 1;
776 if (win == -1 || win == 1) return !msg_win;
777 if (msg_win == win) return 1;
778 return is_child_window( win, msg_win );
779 }
780
781 /* retrieve a posted message */
782 static int get_posted_message( struct msg_queue *queue, user_handle_t win,
783 unsigned int first, unsigned int last, unsigned int flags,
784 struct get_message_reply *reply )
785 {
786 struct message *msg;
787
788 /* check against the filters */
789 LIST_FOR_EACH_ENTRY( msg, &queue->msg_list[POST_MESSAGE], struct message, entry )
790 {
791 if (!match_window( win, msg->win )) continue;
792 if (!check_msg_filter( msg->msg, first, last )) continue;
793 goto found; /* found one */
794 }
795 return 0;
796
797 /* return it to the app */
798 found:
799 reply->total = msg->data_size;
800 if (msg->data_size > get_reply_max_size())
801 {
802 set_error( STATUS_BUFFER_OVERFLOW );
803 return 1;
804 }
805 reply->type = msg->type;
806 reply->win = msg->win;
807 reply->msg = msg->msg;
808 reply->wparam = msg->wparam;
809 reply->lparam = msg->lparam;
810 reply->x = msg->x;
811 reply->y = msg->y;
812 reply->time = msg->time;
813
814 if (flags & PM_REMOVE)
815 {
816 if (msg->data)
817 {
818 set_reply_data_ptr( msg->data, msg->data_size );
819 msg->data = NULL;
820 msg->data_size = 0;
821 }
822 remove_queue_message( queue, msg, POST_MESSAGE );
823 }
824 else if (msg->data) set_reply_data( msg->data, msg->data_size );
825
826 return 1;
827 }
828
829 static int get_quit_message( struct msg_queue *queue, unsigned int flags,
830 struct get_message_reply *reply )
831 {
832 if (queue->quit_message)
833 {
834 reply->total = 0;
835 reply->type = MSG_POSTED;
836 reply->win = 0;
837 reply->msg = WM_QUIT;
838 reply->wparam = queue->exit_code;
839 reply->lparam = 0;
840
841 get_message_defaults( queue, &reply->x, &reply->y, &reply->time );
842
843 if (flags & PM_REMOVE)
844 {
845 queue->quit_message = 0;
846 if (list_empty( &queue->msg_list[POST_MESSAGE] ))
847 clear_queue_bits( queue, QS_POSTMESSAGE|QS_ALLPOSTMESSAGE );
848 }
849 return 1;
850 }
851 else
852 return 0;
853 }
854
855 /* empty a message list and free all the messages */
856 static void empty_msg_list( struct list *list )
857 {
858 struct list *ptr;
859
860 while ((ptr = list_head( list )) != NULL)
861 {
862 struct message *msg = LIST_ENTRY( ptr, struct message, entry );
863 list_remove( &msg->entry );
864 free_message( msg );
865 }
866 }
867
868 /* cleanup all pending results when deleting a queue */
869 static void cleanup_results( struct msg_queue *queue )
870 {
871 struct list *entry;
872
873 while ((entry = list_head( &queue->send_result )) != NULL)
874 {
875 remove_result_from_sender( LIST_ENTRY( entry, struct message_result, sender_entry ) );
876 }
877
878 while ((entry = list_head( &queue->callback_result )) != NULL)
879 {
880 remove_result_from_sender( LIST_ENTRY( entry, struct message_result, sender_entry ) );
881 }
882
883 while (queue->recv_result)
884 reply_message( queue, 0, STATUS_ACCESS_DENIED /*FIXME*/, 1, NULL, 0 );
885 }
886
887 /* check if the thread owning the queue is hung (not checking for messages) */
888 static int is_queue_hung( struct msg_queue *queue )
889 {
890 struct wait_queue_entry *entry;
891
892 if (current_time - queue->last_get_msg <= 5 * TICKS_PER_SEC)
893 return 0; /* less than 5 seconds since last get message -> not hung */
894
895 LIST_FOR_EACH_ENTRY( entry, &queue->obj.wait_queue, struct wait_queue_entry, entry )
896 {
897 if (get_wait_queue_thread(entry)->queue == queue)
898 return 0; /* thread is waiting on queue -> not hung */
899 }
900 return 1;
901 }
902
903 static int msg_queue_add_queue( struct object *obj, struct wait_queue_entry *entry )
904 {
905 struct msg_queue *queue = (struct msg_queue *)obj;
906 struct process *process = get_wait_queue_thread(entry)->process;
907
908 /* a thread can only wait on its own queue */
909 if (get_wait_queue_thread(entry)->queue != queue)
910 {
911 set_error( STATUS_ACCESS_DENIED );
912 return 0;
913 }
914 if (process->idle_event && !(queue->wake_mask & QS_SMRESULT)) set_event( process->idle_event );
915
916 if (queue->fd && list_empty( &obj->wait_queue )) /* first on the queue */
917 set_fd_events( queue->fd, POLLIN );
918 add_queue( obj, entry );
919 return 1;
920 }
921
922 static void msg_queue_remove_queue(struct object *obj, struct wait_queue_entry *entry )
923 {
924 struct msg_queue *queue = (struct msg_queue *)obj;
925
926 remove_queue( obj, entry );
927 if (queue->fd && list_empty( &obj->wait_queue )) /* last on the queue is gone */
928 set_fd_events( queue->fd, 0 );
929 }
930
931 static void msg_queue_dump( struct object *obj, int verbose )
932 {
933 struct msg_queue *queue = (struct msg_queue *)obj;
934 fprintf( stderr, "Msg queue bits=%x mask=%x\n",
935 queue->wake_bits, queue->wake_mask );
936 }
937
938 static int msg_queue_signaled( struct object *obj, struct wait_queue_entry *entry )
939 {
940 struct msg_queue *queue = (struct msg_queue *)obj;
941 int ret = 0;
942
943 if (queue->fd)
944 {
945 if ((ret = check_fd_events( queue->fd, POLLIN )))
946 /* stop waiting on select() if we are signaled */
947 set_fd_events( queue->fd, 0 );
948 else if (!list_empty( &obj->wait_queue ))
949 /* restart waiting on poll() if we are no longer signaled */
950 set_fd_events( queue->fd, POLLIN );
951 }
952 return ret || is_signaled( queue );
953 }
954
955 static void msg_queue_satisfied( struct object *obj, struct wait_queue_entry *entry )
956 {
957 struct msg_queue *queue = (struct msg_queue *)obj;
958 queue->wake_mask = 0;
959 queue->changed_mask = 0;
960 }
961
962 static void msg_queue_destroy( struct object *obj )
963 {
964 struct msg_queue *queue = (struct msg_queue *)obj;
965 struct list *ptr;
966 struct hotkey *hotkey, *hotkey2;
967 int i;
968
969 cleanup_results( queue );
970 for (i = 0; i < NB_MSG_KINDS; i++) empty_msg_list( &queue->msg_list[i] );
971
972 LIST_FOR_EACH_ENTRY_SAFE( hotkey, hotkey2, &queue->input->desktop->hotkeys, struct hotkey, entry )
973 {
974 if (hotkey->queue == queue)
975 {
976 list_remove( &hotkey->entry );
977 free( hotkey );
978 }
979 }
980
981 while ((ptr = list_head( &queue->pending_timers )))
982 {
983 struct timer *timer = LIST_ENTRY( ptr, struct timer, entry );
984 list_remove( &timer->entry );
985 free( timer );
986 }
987 while ((ptr = list_head( &queue->expired_timers )))
988 {
989 struct timer *timer = LIST_ENTRY( ptr, struct timer, entry );
990 list_remove( &timer->entry );
991 free( timer );
992 }
993 if (queue->timeout) remove_timeout_user( queue->timeout );
994 queue->input->cursor_count -= queue->cursor_count;
995 release_object( queue->input );
996 if (queue->hooks) release_object( queue->hooks );
997 if (queue->fd) release_object( queue->fd );
998 }
999
1000 static void msg_queue_poll_event( struct fd *fd, int event )
1001 {
1002 struct msg_queue *queue = get_fd_user( fd );
1003 assert( queue->obj.ops == &msg_queue_ops );
1004
1005 if (event & (POLLERR | POLLHUP)) set_fd_events( fd, -1 );
1006 else set_fd_events( queue->fd, 0 );
1007 wake_up( &queue->obj, 0 );
1008 }
1009
1010 static void thread_input_dump( struct object *obj, int verbose )
1011 {
1012 struct thread_input *input = (struct thread_input *)obj;
1013 fprintf( stderr, "Thread input focus=%08x capture=%08x active=%08x\n",
1014 input->focus, input->capture, input->active );
1015 }
1016
1017 static void thread_input_destroy( struct object *obj )
1018 {
1019 struct thread_input *input = (struct thread_input *)obj;
1020
1021 empty_msg_list( &input->msg_list );
1022 if (input->desktop)
1023 {
1024 if (input->desktop->foreground_input == input) set_foreground_input( input->desktop, NULL );
1025 release_object( input->desktop );
1026 }
1027 }
1028
1029 /* fix the thread input data when a window is destroyed */
1030 static inline void thread_input_cleanup_window( struct msg_queue *queue, user_handle_t window )
1031 {
1032 struct thread_input *input = queue->input;
1033
1034 if (window == input->focus) input->focus = 0;
1035 if (window == input->capture) input->capture = 0;
1036 if (window == input->active) input->active = 0;
1037 if (window == input->menu_owner) input->menu_owner = 0;
1038 if (window == input->move_size) input->move_size = 0;
1039 if (window == input->caret) set_caret_window( input, 0 );
1040 }
1041
1042 /* check if the specified window can be set in the input data of a given queue */
1043 static int check_queue_input_window( struct msg_queue *queue, user_handle_t window )
1044 {
1045 struct thread *thread;
1046 int ret = 0;
1047
1048 if (!window) return 1; /* we can always clear the data */
1049
1050 if ((thread = get_window_thread( window )))
1051 {
1052 ret = (queue->input == thread->queue->input);
1053 if (!ret) set_error( STATUS_ACCESS_DENIED );
1054 release_object( thread );
1055 }
1056 else set_error( STATUS_INVALID_HANDLE );
1057
1058 return ret;
1059 }
1060
1061 /* make sure the specified thread has a queue */
1062 int init_thread_queue( struct thread *thread )
1063 {
1064 if (thread->queue) return 1;
1065 return (create_msg_queue( thread, NULL ) != NULL);
1066 }
1067
1068 /* attach two thread input data structures */
1069 int attach_thread_input( struct thread *thread_from, struct thread *thread_to )
1070 {
1071 struct desktop *desktop;
1072 struct thread_input *input;
1073 int ret;
1074
1075 if (!thread_to->queue && !(thread_to->queue = create_msg_queue( thread_to, NULL ))) return 0;
1076 if (!(desktop = get_thread_desktop( thread_from, 0 ))) return 0;
1077 input = (struct thread_input *)grab_object( thread_to->queue->input );
1078 if (input->desktop != desktop)
1079 {
1080 set_error( STATUS_ACCESS_DENIED );
1081 release_object( input );
1082 release_object( desktop );
1083 return 0;
1084 }
1085 release_object( desktop );
1086
1087 if (thread_from->queue)
1088 {
1089 if (!input->focus) input->focus = thread_from->queue->input->focus;
1090 if (!input->active) input->active = thread_from->queue->input->active;
1091 }
1092
1093 ret = assign_thread_input( thread_from, input );
1094 if (ret) memset( input->keystate, 0, sizeof(input->keystate) );
1095 release_object( input );
1096 return ret;
1097 }
1098
1099 /* detach two thread input data structures */
1100 void detach_thread_input( struct thread *thread_from )
1101 {
1102 struct thread *thread;
1103 struct thread_input *input, *old_input = thread_from->queue->input;
1104
1105 if ((input = create_thread_input( thread_from )))
1106 {
1107 if (old_input->focus && (thread = get_window_thread( old_input->focus )))
1108 {
1109 if (thread == thread_from)
1110 {
1111 input->focus = old_input->focus;
1112 old_input->focus = 0;
1113 }
1114 release_object( thread );
1115 }
1116 if (old_input->active && (thread = get_window_thread( old_input->active )))
1117 {
1118 if (thread == thread_from)
1119 {
1120 input->active = old_input->active;
1121 old_input->active = 0;
1122 }
1123 release_object( thread );
1124 }
1125 assign_thread_input( thread_from, input );
1126 release_object( input );
1127 }
1128 }
1129
1130
1131 /* set the next timer to expire */
1132 static void set_next_timer( struct msg_queue *queue )
1133 {
1134 struct list *ptr;
1135
1136 if (queue->timeout)
1137 {
1138 remove_timeout_user( queue->timeout );
1139 queue->timeout = NULL;
1140 }
1141 if ((ptr = list_head( &queue->pending_timers )))
1142 {
1143 struct timer *timer = LIST_ENTRY( ptr, struct timer, entry );
1144 queue->timeout = add_timeout_user( timer->when, timer_callback, queue );
1145 }
1146 /* set/clear QS_TIMER bit */
1147 if (list_empty( &queue->expired_timers ))
1148 clear_queue_bits( queue, QS_TIMER );
1149 else
1150 set_queue_bits( queue, QS_TIMER );
1151 }
1152
1153 /* find a timer from its window and id */
1154 static struct timer *find_timer( struct msg_queue *queue, user_handle_t win,
1155 unsigned int msg, lparam_t id )
1156 {
1157 struct list *ptr;
1158
1159 /* we need to search both lists */
1160
1161 LIST_FOR_EACH( ptr, &queue->pending_timers )
1162 {
1163 struct timer *timer = LIST_ENTRY( ptr, struct timer, entry );
1164 if (timer->win == win && timer->msg == msg && timer->id == id) return timer;
1165 }
1166 LIST_FOR_EACH( ptr, &queue->expired_timers )
1167 {
1168 struct timer *timer = LIST_ENTRY( ptr, struct timer, entry );
1169 if (timer->win == win && timer->msg == msg && timer->id == id) return timer;
1170 }
1171 return NULL;
1172 }
1173
1174 /* callback for the next timer expiration */
1175 static void timer_callback( void *private )
1176 {
1177 struct msg_queue *queue = private;
1178 struct list *ptr;
1179
1180 queue->timeout = NULL;
1181 /* move on to the next timer */
1182 ptr = list_head( &queue->pending_timers );
1183 list_remove( ptr );
1184 list_add_tail( &queue->expired_timers, ptr );
1185 set_next_timer( queue );
1186 }
1187
1188 /* link a timer at its rightful place in the queue list */
1189 static void link_timer( struct msg_queue *queue, struct timer *timer )
1190 {
1191 struct list *ptr;
1192
1193 for (ptr = queue->pending_timers.next; ptr != &queue->pending_timers; ptr = ptr->next)
1194 {
1195 struct timer *t = LIST_ENTRY( ptr, struct timer, entry );
1196 if (t->when >= timer->when) break;
1197 }
1198 list_add_before( ptr, &timer->entry );
1199 }
1200
1201 /* remove a timer from the queue timer list and free it */
1202 static void free_timer( struct msg_queue *queue, struct timer *timer )
1203 {
1204 list_remove( &timer->entry );
1205 free( timer );
1206 set_next_timer( queue );
1207 }
1208
1209 /* restart an expired timer */
1210 static void restart_timer( struct msg_queue *queue, struct timer *timer )
1211 {
1212 list_remove( &timer->entry );
1213 while (timer->when <= current_time) timer->when += (timeout_t)timer->rate * 10000;
1214 link_timer( queue, timer );
1215 set_next_timer( queue );
1216 }
1217
1218 /* find an expired timer matching the filtering parameters */
1219 static struct timer *find_expired_timer( struct msg_queue *queue, user_handle_t win,
1220 unsigned int get_first, unsigned int get_last,
1221 int remove )
1222 {
1223 struct list *ptr;
1224
1225 LIST_FOR_EACH( ptr, &queue->expired_timers )
1226 {
1227 struct timer *timer = LIST_ENTRY( ptr, struct timer, entry );
1228 if (win && timer->win != win) continue;
1229 if (check_msg_filter( timer->msg, get_first, get_last ))
1230 {
1231 if (remove) restart_timer( queue, timer );
1232 return timer;
1233 }
1234 }
1235 return NULL;
1236 }
1237
1238 /* add a timer */
1239 static struct timer *set_timer( struct msg_queue *queue, unsigned int rate )
1240 {
1241 struct timer *timer = mem_alloc( sizeof(*timer) );
1242 if (timer)
1243 {
1244 timer->rate = max( rate, 1 );
1245 timer->when = current_time + (timeout_t)timer->rate * 10000;
1246 link_timer( queue, timer );
1247 /* check if we replaced the next timer */
1248 if (list_head( &queue->pending_timers ) == &timer->entry) set_next_timer( queue );
1249 }
1250 return timer;
1251 }
1252
1253 /* change the input key state for a given key */
1254 static void set_input_key_state( unsigned char *keystate, unsigned char key, int down )
1255 {
1256 if (down)
1257 {
1258 if (!(keystate[key] & 0x80)) keystate[key] ^= 0x01;
1259 keystate[key] |= down;
1260 }
1261 else keystate[key] &= ~0x80;
1262 }
1263
1264 /* update the input key state for a keyboard message */
1265 static void update_input_key_state( struct desktop *desktop, unsigned char *keystate,
1266 const struct message *msg )
1267 {
1268 unsigned char key;
1269 int down = 0;
1270
1271 switch (msg->msg)
1272 {
1273 case WM_LBUTTONDOWN:
1274 down = (keystate == desktop->keystate) ? 0xc0 : 0x80;
1275 /* fall through */
1276 case WM_LBUTTONUP:
1277 set_input_key_state( keystate, VK_LBUTTON, down );
1278 break;
1279 case WM_MBUTTONDOWN:
1280 down = (keystate == desktop->keystate) ? 0xc0 : 0x80;
1281 /* fall through */
1282 case WM_MBUTTONUP:
1283 set_input_key_state( keystate, VK_MBUTTON, down );
1284 break;
1285 case WM_RBUTTONDOWN:
1286 down = (keystate == desktop->keystate) ? 0xc0 : 0x80;
1287 /* fall through */
1288 case WM_RBUTTONUP:
1289 set_input_key_state( keystate, VK_RBUTTON, down );
1290 break;
1291 case WM_XBUTTONDOWN:
1292 down = (keystate == desktop->keystate) ? 0xc0 : 0x80;
1293 /* fall through */
1294 case WM_XBUTTONUP:
1295 if (msg->wparam >> 16 == XBUTTON1) set_input_key_state( keystate, VK_XBUTTON1, down );
1296 else if (msg->wparam >> 16 == XBUTTON2) set_input_key_state( keystate, VK_XBUTTON2, down );
1297 break;
1298 case WM_KEYDOWN:
1299 case WM_SYSKEYDOWN:
1300 down = (keystate == desktop->keystate) ? 0xc0 : 0x80;
1301 /* fall through */
1302 case WM_KEYUP:
1303 case WM_SYSKEYUP:
1304 key = (unsigned char)msg->wparam;
1305 set_input_key_state( keystate, key, down );
1306 switch(key)
1307 {
1308 case VK_LCONTROL:
1309 case VK_RCONTROL:
1310 down = (keystate[VK_LCONTROL] | keystate[VK_RCONTROL]) & 0x80;
1311 set_input_key_state( keystate, VK_CONTROL, down );
1312 break;
1313 case VK_LMENU:
1314 case VK_RMENU:
1315 down = (keystate[VK_LMENU] | keystate[VK_RMENU]) & 0x80;
1316 set_input_key_state( keystate, VK_MENU, down );
1317 break;
1318 case VK_LSHIFT:
1319 case VK_RSHIFT:
1320 down = (keystate[VK_LSHIFT] | keystate[VK_RSHIFT]) & 0x80;
1321 set_input_key_state( keystate, VK_SHIFT, down );
1322 break;
1323 }
1324 break;
1325 }
1326 }
1327
1328 /* release the hardware message currently being processed by the given thread */
1329 static void release_hardware_message( struct msg_queue *queue, unsigned int hw_id,
1330 int remove )
1331 {
1332 struct thread_input *input = queue->input;
1333 struct message *msg;
1334
1335 LIST_FOR_EACH_ENTRY( msg, &input->msg_list, struct message, entry )
1336 {
1337 if (msg->unique_id == hw_id) break;
1338 }
1339 if (&msg->entry == &input->msg_list) return; /* not found */
1340
1341 /* clear the queue bit for that message */
1342 if (remove)
1343 {
1344 struct message *other;
1345 int clr_bit;
1346
1347 clr_bit = get_hardware_msg_bit( msg );
1348 LIST_FOR_EACH_ENTRY( other, &input->msg_list, struct message, entry )
1349 {
1350 if (other != msg && get_hardware_msg_bit( other ) == clr_bit)
1351 {
1352 clr_bit = 0;
1353 break;
1354 }
1355 }
1356 if (clr_bit) clear_queue_bits( queue, clr_bit );
1357
1358 update_input_key_state( input->desktop, input->keystate, msg );
1359 list_remove( &msg->entry );
1360 free_message( msg );
1361 }
1362 }
1363
1364 static int queue_hotkey_message( struct desktop *desktop, struct message *msg )
1365 {
1366 struct hotkey *hotkey;
1367 unsigned int modifiers = 0;
1368
1369 if (msg->msg != WM_KEYDOWN) return 0;
1370
1371 if (desktop->keystate[VK_MENU] & 0x80) modifiers |= MOD_ALT;
1372 if (desktop->keystate[VK_CONTROL] & 0x80) modifiers |= MOD_CONTROL;
1373 if (desktop->keystate[VK_SHIFT] & 0x80) modifiers |= MOD_SHIFT;
1374 if ((desktop->keystate[VK_LWIN] & 0x80) || (desktop->keystate[VK_RWIN] & 0x80)) modifiers |= MOD_WIN;
1375
1376 LIST_FOR_EACH_ENTRY( hotkey, &desktop->hotkeys, struct hotkey, entry )
1377 {
1378 if (hotkey->vkey != msg->wparam) continue;
1379 if ((hotkey->flags & (MOD_ALT|MOD_CONTROL|MOD_SHIFT|MOD_WIN)) == modifiers) goto found;
1380 }
1381
1382 return 0;
1383
1384 found:
1385 msg->type = MSG_POSTED;
1386 msg->win = hotkey->win;
1387 msg->msg = WM_HOTKEY;
1388 msg->wparam = hotkey->id;
1389 msg->lparam = ((hotkey->vkey & 0xffff) << 16) | modifiers;
1390
1391 free( msg->data );
1392 msg->data = NULL;
1393 msg->data_size = 0;
1394
1395 list_add_tail( &hotkey->queue->msg_list[POST_MESSAGE], &msg->entry );
1396 set_queue_bits( hotkey->queue, QS_POSTMESSAGE|QS_ALLPOSTMESSAGE|QS_HOTKEY );
1397 hotkey->queue->hotkey_count++;
1398 return 1;
1399 }
1400
1401 /* find the window that should receive a given hardware message */
1402 static user_handle_t find_hardware_message_window( struct desktop *desktop, struct thread_input *input,
1403 struct message *msg, unsigned int *msg_code,
1404 struct thread **thread )
1405 {
1406 user_handle_t win = 0;
1407
1408 *thread = NULL;
1409 *msg_code = msg->msg;
1410 if (msg->msg == WM_INPUT)
1411 {
1412 if (!(win = msg->win) && input) win = input->focus;
1413 }
1414 else if (is_keyboard_msg( msg ))
1415 {
1416 if (input && !(win = input->focus))
1417 {
1418 win = input->active;
1419 if (*msg_code < WM_SYSKEYDOWN) *msg_code += WM_SYSKEYDOWN - WM_KEYDOWN;
1420 }
1421 }
1422 else if (!input || !(win = input->capture)) /* mouse message */
1423 {
1424 if (is_window_visible( msg->win ) && !is_window_transparent( msg->win )) win = msg->win;
1425 else win = shallow_window_from_point( desktop, msg->x, msg->y );
1426
1427 *thread = window_thread_from_point( win, msg->x, msg->y );
1428 }
1429
1430 if (!*thread)
1431 *thread = get_window_thread( win );
1432 return win;
1433 }
1434
1435 static struct rawinput_device_entry *find_rawinput_device( unsigned short usage_page, unsigned short usage )
1436 {
1437 struct rawinput_device_entry *e;
1438
1439 LIST_FOR_EACH_ENTRY( e, &current->process->rawinput_devices, struct rawinput_device_entry, entry )
1440 {
1441 if (e->device.usage_page != usage_page || e->device.usage != usage) continue;
1442 return e;
1443 }
1444
1445 return NULL;
1446 }
1447
1448 static void update_rawinput_device(const struct rawinput_device *device)
1449 {
1450 struct rawinput_device_entry *e;
1451
1452 if (!(e = find_rawinput_device( device->usage_page, device->usage )))
1453 {
1454 if (!(e = mem_alloc( sizeof(*e) ))) return;
1455 list_add_tail( &current->process->rawinput_devices, &e->entry );
1456 }
1457
1458 if (device->flags & RIDEV_REMOVE)
1459 {
1460 list_remove( &e->entry );
1461 free( e );
1462 return;
1463 }
1464
1465 e->device = *device;
1466 e->device.target = get_user_full_handle( e->device.target );
1467 }
1468
1469 /* queue a hardware message into a given thread input */
1470 static void queue_hardware_message( struct desktop *desktop, struct message *msg, int always_queue )
1471 {
1472 user_handle_t win;
1473 struct thread *thread;
1474 struct thread_input *input;
1475 unsigned int msg_code;
1476
1477 update_input_key_state( desktop, desktop->keystate, msg );
1478 last_input_time = get_tick_count();
1479 if (msg->msg != WM_MOUSEMOVE) always_queue = 1;
1480
1481 if (is_keyboard_msg( msg ))
1482 {
1483 if (queue_hotkey_message( desktop, msg )) return;
1484 if (desktop->keystate[VK_MENU] & 0x80) msg->lparam |= KF_ALTDOWN << 16;
1485 if (msg->wparam == VK_SHIFT || msg->wparam == VK_LSHIFT || msg->wparam == VK_RSHIFT)
1486 msg->lparam &= ~(KF_EXTENDED << 16);
1487 }
1488 else if (msg->msg != WM_INPUT)
1489 {
1490 if (msg->msg == WM_MOUSEMOVE)
1491 {
1492 int x = min( max( msg->x, desktop->cursor.clip.left ), desktop->cursor.clip.right-1 );
1493 int y = min( max( msg->y, desktop->cursor.clip.top ), desktop->cursor.clip.bottom-1 );
1494 if (desktop->cursor.x != x || desktop->cursor.y != y) always_queue = 1;
1495 desktop->cursor.x = x;
1496 desktop->cursor.y = y;
1497 desktop->cursor.last_change = get_tick_count();
1498 }
1499 if (desktop->keystate[VK_LBUTTON] & 0x80) msg->wparam |= MK_LBUTTON;
1500 if (desktop->keystate[VK_MBUTTON] & 0x80) msg->wparam |= MK_MBUTTON;
1501 if (desktop->keystate[VK_RBUTTON] & 0x80) msg->wparam |= MK_RBUTTON;
1502 if (desktop->keystate[VK_SHIFT] & 0x80) msg->wparam |= MK_SHIFT;
1503 if (desktop->keystate[VK_CONTROL] & 0x80) msg->wparam |= MK_CONTROL;
1504 if (desktop->keystate[VK_XBUTTON1] & 0x80) msg->wparam |= MK_XBUTTON1;
1505 if (desktop->keystate[VK_XBUTTON2] & 0x80) msg->wparam |= MK_XBUTTON2;
1506 }
1507 msg->x = desktop->cursor.x;
1508 msg->y = desktop->cursor.y;
1509
1510 if (msg->win && (thread = get_window_thread( msg->win )))
1511 {
1512 input = thread->queue->input;
1513 release_object( thread );
1514 }
1515 else input = desktop->foreground_input;
1516
1517 win = find_hardware_message_window( desktop, input, msg, &msg_code, &thread );
1518 if (!win || !thread)
1519 {
1520 if (input) update_input_key_state( input->desktop, input->keystate, msg );
1521 free_message( msg );
1522 return;
1523 }
1524 input = thread->queue->input;
1525
1526 if (win != desktop->cursor.win) always_queue = 1;
1527 desktop->cursor.win = win;
1528
1529 if (!always_queue || merge_message( input, msg )) free_message( msg );
1530 else
1531 {
1532 msg->unique_id = 0; /* will be set once we return it to the app */
1533 list_add_tail( &input->msg_list, &msg->entry );
1534 set_queue_bits( thread->queue, get_hardware_msg_bit(msg) );
1535 }
1536 release_object( thread );
1537 }
1538
1539 /* send the low-level hook message for a given hardware message */
1540 static int send_hook_ll_message( struct desktop *desktop, struct message *hardware_msg,
1541 const hw_input_t *input, struct msg_queue *sender )
1542 {
1543 struct thread *hook_thread;
1544 struct msg_queue *queue;
1545 struct message *msg;
1546 timeout_t timeout = 2000 * -10000; /* FIXME: load from registry */
1547 int id = (input->type == INPUT_MOUSE) ? WH_MOUSE_LL : WH_KEYBOARD_LL;
1548
1549 if (!(hook_thread = get_first_global_hook( id ))) return 0;
1550 if (!(queue = hook_thread->queue)) return 0;
1551 if (is_queue_hung( queue )) return 0;
1552
1553 if (!(msg = mem_alloc( sizeof(*msg) ))) return 0;
1554
1555 msg->type = MSG_HOOK_LL;
1556 msg->win = 0;
1557 msg->msg = id;
1558 msg->wparam = hardware_msg->msg;
1559 msg->x = hardware_msg->x;
1560 msg->y = hardware_msg->y;
1561 msg->time = hardware_msg->time;
1562 msg->data_size = hardware_msg->data_size;
1563 msg->result = NULL;
1564
1565 if (input->type == INPUT_KEYBOARD)
1566 {
1567 unsigned short vkey = input->kbd.vkey;
1568 if (input->kbd.flags & KEYEVENTF_UNICODE) vkey = VK_PACKET;
1569 msg->lparam = (input->kbd.scan << 16) | vkey;
1570 }
1571 else msg->lparam = input->mouse.data << 16;
1572
1573 if (!(msg->data = memdup( hardware_msg->data, hardware_msg->data_size )) ||
1574 !(msg->result = alloc_message_result( sender, queue, msg, timeout )))
1575 {
1576 free_message( msg );
1577 return 0;
1578 }
1579 msg->result->hardware_msg = hardware_msg;
1580 msg->result->desktop = (struct desktop *)grab_object( desktop );
1581 list_add_tail( &queue->msg_list[SEND_MESSAGE], &msg->entry );
1582 set_queue_bits( queue, QS_SENDMESSAGE );
1583 return 1;
1584 }
1585
1586 /* queue a hardware message for a mouse event */
1587 static int queue_mouse_message( struct desktop *desktop, user_handle_t win, const hw_input_t *input,
1588 unsigned int hook_flags, struct msg_queue *sender )
1589 {
1590 const struct rawinput_device *device;
1591 struct hardware_msg_data *msg_data;
1592 struct message *msg;
1593 unsigned int i, time, flags;
1594 int wait = 0, x, y;
1595
1596 static const unsigned int messages[] =
1597 {
1598 WM_MOUSEMOVE, /* 0x0001 = MOUSEEVENTF_MOVE */
1599 WM_LBUTTONDOWN, /* 0x0002 = MOUSEEVENTF_LEFTDOWN */
1600 WM_LBUTTONUP, /* 0x0004 = MOUSEEVENTF_LEFTUP */
1601 WM_RBUTTONDOWN, /* 0x0008 = MOUSEEVENTF_RIGHTDOWN */
1602 WM_RBUTTONUP, /* 0x0010 = MOUSEEVENTF_RIGHTUP */
1603 WM_MBUTTONDOWN, /* 0x0020 = MOUSEEVENTF_MIDDLEDOWN */
1604 WM_MBUTTONUP, /* 0x0040 = MOUSEEVENTF_MIDDLEUP */
1605 WM_XBUTTONDOWN, /* 0x0080 = MOUSEEVENTF_XDOWN */
1606 WM_XBUTTONUP, /* 0x0100 = MOUSEEVENTF_XUP */
1607 0, /* 0x0200 = unused */
1608 0, /* 0x0400 = unused */
1609 WM_MOUSEWHEEL, /* 0x0800 = MOUSEEVENTF_WHEEL */
1610 WM_MOUSEHWHEEL /* 0x1000 = MOUSEEVENTF_HWHEEL */
1611 };
1612
1613 desktop->cursor.last_change = get_tick_count();
1614 flags = input->mouse.flags;
1615 time = input->mouse.time;
1616 if (!time) time = desktop->cursor.last_change;
1617
1618 if (flags & MOUSEEVENTF_MOVE)
1619 {
1620 if (flags & MOUSEEVENTF_ABSOLUTE)
1621 {
1622 x = input->mouse.x;
1623 y = input->mouse.y;
1624 if (flags & ~(MOUSEEVENTF_MOVE | MOUSEEVENTF_ABSOLUTE) &&
1625 x == desktop->cursor.x && y == desktop->cursor.y)
1626 flags &= ~MOUSEEVENTF_MOVE;
1627 }
1628 else
1629 {
1630 x = desktop->cursor.x + input->mouse.x;
1631 y = desktop->cursor.y + input->mouse.y;
1632 }
1633 }
1634 else
1635 {
1636 x = desktop->cursor.x;
1637 y = desktop->cursor.y;
1638 }
1639
1640 if ((device = current->process->rawinput_mouse))
1641 {
1642 if (!(msg = mem_alloc( sizeof(*msg) ))) return 0;
1643 if (!(msg_data = mem_alloc( sizeof(*msg_data) )))
1644 {
1645 free( msg );
1646 return 0;
1647 }
1648
1649 msg->type = MSG_HARDWARE;
1650 msg->win = device->target;
1651 msg->msg = WM_INPUT;
1652 msg->wparam = RIM_INPUT;
1653 msg->lparam = 0;
1654 msg->time = time;
1655 msg->data = msg_data;
1656 msg->data_size = sizeof(*msg_data);
1657 msg->result = NULL;
1658
1659 msg_data->info = input->mouse.info;
1660 msg_data->flags = flags;
1661 msg_data->rawinput.type = RIM_TYPEMOUSE;
1662 msg_data->rawinput.mouse.x = x - desktop->cursor.x;
1663 msg_data->rawinput.mouse.y = y - desktop->cursor.y;
1664 msg_data->rawinput.mouse.data = input->mouse.data;
1665
1666 queue_hardware_message( desktop, msg, 0 );
1667 }
1668
1669 for (i = 0; i < sizeof(messages)/sizeof(messages[0]); i++)
1670 {
1671 if (!messages[i]) continue;
1672 if (!(flags & (1 << i))) continue;
1673 flags &= ~(1 << i);
1674
1675 if (!(msg = mem_alloc( sizeof(*msg) ))) return 0;
1676 if (!(msg_data = mem_alloc( sizeof(*msg_data) )))
1677 {
1678 free( msg );
1679 return 0;
1680 }
1681 memset( msg_data, 0, sizeof(*msg_data) );
1682
1683 msg->type = MSG_HARDWARE;
1684 msg->win = get_user_full_handle( win );
1685 msg->msg = messages[i];
1686 msg->wparam = input->mouse.data << 16;
1687 msg->lparam = 0;
1688 msg->x = x;
1689 msg->y = y;
1690 msg->time = time;
1691 msg->result = NULL;
1692 msg->data = msg_data;
1693 msg->data_size = sizeof(*msg_data);
1694 msg_data->info = input->mouse.info;
1695 if (hook_flags & SEND_HWMSG_INJECTED) msg_data->flags = LLMHF_INJECTED;
1696
1697 /* specify a sender only when sending the last message */
1698 if (!(flags & ((1 << sizeof(messages)/sizeof(messages[0])) - 1)))
1699 {
1700 if (!(wait = send_hook_ll_message( desktop, msg, input, sender )))
1701 queue_hardware_message( desktop, msg, 0 );
1702 }
1703 else if (!send_hook_ll_message( desktop, msg, input, NULL ))
1704 queue_hardware_message( desktop, msg, 0 );
1705 }
1706 return wait;
1707 }
1708
1709 /* queue a hardware message for a keyboard event */
1710 static int queue_keyboard_message( struct desktop *desktop, user_handle_t win, const hw_input_t *input,
1711 unsigned int hook_flags, struct msg_queue *sender )
1712 {
1713 const struct rawinput_device *device;
1714 struct hardware_msg_data *msg_data;
1715 struct message *msg;
1716 unsigned char vkey = input->kbd.vkey;
1717 unsigned int message_code, time;
1718 int wait;
1719
1720 if (!(time = input->kbd.time)) time = get_tick_count();
1721
1722 if (!(input->kbd.flags & KEYEVENTF_UNICODE))
1723 {
1724 switch (vkey)
1725 {
1726 case VK_MENU:
1727 case VK_LMENU:
1728 case VK_RMENU:
1729 vkey = (input->kbd.flags & KEYEVENTF_EXTENDEDKEY) ? VK_RMENU : VK_LMENU;
1730 break;
1731 case VK_CONTROL:
1732 case VK_LCONTROL:
1733 case VK_RCONTROL:
1734 vkey = (input->kbd.flags & KEYEVENTF_EXTENDEDKEY) ? VK_RCONTROL : VK_LCONTROL;
1735 break;
1736 case VK_SHIFT:
1737 case VK_LSHIFT:
1738 case VK_RSHIFT:
1739 vkey = (input->kbd.flags & KEYEVENTF_EXTENDEDKEY) ? VK_RSHIFT : VK_LSHIFT;
1740 break;
1741 }
1742 }
1743
1744 message_code = (input->kbd.flags & KEYEVENTF_KEYUP) ? WM_KEYUP : WM_KEYDOWN;
1745 switch (vkey)
1746 {
1747 case VK_LMENU:
1748 case VK_RMENU:
1749 if (input->kbd.flags & KEYEVENTF_KEYUP)
1750 {
1751 /* send WM_SYSKEYUP if Alt still pressed and no other key in between */
1752 /* we use 0x02 as a flag to track if some other SYSKEYUP was sent already */
1753 if ((desktop->keystate[VK_MENU] & 0x82) != 0x82) break;
1754 message_code = WM_SYSKEYUP;
1755 desktop->keystate[VK_MENU] &= ~0x02;
1756 }
1757 else
1758 {
1759 /* send WM_SYSKEYDOWN for Alt except with Ctrl */
1760 if (desktop->keystate[VK_CONTROL] & 0x80) break;
1761 message_code = WM_SYSKEYDOWN;
1762 desktop->keystate[VK_MENU] |= 0x02;
1763 }
1764 break;
1765
1766 case VK_LCONTROL:
1767 case VK_RCONTROL:
1768 /* send WM_SYSKEYUP on release if Alt still pressed */
1769 if (!(input->kbd.flags & KEYEVENTF_KEYUP)) break;
1770 if (!(desktop->keystate[VK_MENU] & 0x80)) break;
1771 message_code = WM_SYSKEYUP;
1772 desktop->keystate[VK_MENU] &= ~0x02;
1773 break;
1774
1775 default:
1776 /* send WM_SYSKEY for Alt-anykey and for F10 */
1777 if (desktop->keystate[VK_CONTROL] & 0x80) break;
1778 if (!(desktop->keystate[VK_MENU] & 0x80)) break;
1779 /* fall through */
1780 case VK_F10:
1781 message_code = (input->kbd.flags & KEYEVENTF_KEYUP) ? WM_SYSKEYUP : WM_SYSKEYDOWN;
1782 desktop->keystate[VK_MENU] &= ~0x02;
1783 break;
1784 }
1785
1786 if ((device = current->process->rawinput_kbd))
1787 {
1788 if (!(msg = mem_alloc( sizeof(*msg) ))) return 0;
1789 if (!(msg_data = mem_alloc( sizeof(*msg_data) )))
1790 {
1791 free( msg );
1792 return 0;
1793 }
1794
1795 msg->type = MSG_HARDWARE;
1796 msg->win = device->target;
1797 msg->msg = WM_INPUT;
1798 msg->wparam = RIM_INPUT;
1799 msg->lparam = 0;
1800 msg->time = time;
1801 msg->data = msg_data;
1802 msg->data_size = sizeof(*msg_data);
1803 msg->result = NULL;
1804
1805 msg_data->info = input->kbd.info;
1806 msg_data->flags = input->kbd.flags;
1807 msg_data->rawinput.type = RIM_TYPEKEYBOARD;
1808 msg_data->rawinput.kbd.message = message_code;
1809 msg_data->rawinput.kbd.vkey = vkey;
1810 msg_data->rawinput.kbd.scan = input->kbd.scan;
1811
1812 queue_hardware_message( desktop, msg, 0 );
1813 }
1814
1815 if (!(msg = mem_alloc( sizeof(*msg) ))) return 0;
1816 if (!(msg_data = mem_alloc( sizeof(*msg_data) )))
1817 {
1818 free( msg );
1819 return 0;
1820 }
1821 memset( msg_data, 0, sizeof(*msg_data) );
1822
1823 msg->type = MSG_HARDWARE;
1824 msg->win = get_user_full_handle( win );
1825 msg->msg = message_code;
1826 msg->lparam = (input->kbd.scan << 16) | 1u; /* repeat count */
1827 msg->time = time;
1828 msg->result = NULL;
1829 msg->data = msg_data;
1830 msg->data_size = sizeof(*msg_data);
1831 msg_data->info = input->kbd.info;
1832 if (hook_flags & SEND_HWMSG_INJECTED) msg_data->flags = LLKHF_INJECTED;
1833
1834 if (input->kbd.flags & KEYEVENTF_UNICODE)
1835 {
1836 msg->wparam = VK_PACKET;
1837 }
1838 else
1839 {
1840 unsigned int flags = 0;
1841 if (input->kbd.flags & KEYEVENTF_EXTENDEDKEY) flags |= KF_EXTENDED;
1842 /* FIXME: set KF_DLGMODE and KF_MENUMODE when needed */
1843 if (input->kbd.flags & KEYEVENTF_KEYUP) flags |= KF_REPEAT | KF_UP;
1844 else if (desktop->keystate[vkey] & 0x80) flags |= KF_REPEAT;
1845
1846 msg->wparam = vkey;
1847 msg->lparam |= flags << 16;
1848 msg_data->flags |= (flags & (KF_EXTENDED | KF_ALTDOWN | KF_UP)) >> 8;
1849 }
1850
1851 if (!(wait = send_hook_ll_message( desktop, msg, input, sender )))
1852 queue_hardware_message( desktop, msg, 1 );
1853
1854 return wait;
1855 }
1856
1857 /* queue a hardware message for a custom type of event */
1858 static void queue_custom_hardware_message( struct desktop *desktop, user_handle_t win,
1859 const hw_input_t *input )
1860 {
1861 struct hardware_msg_data *msg_data;
1862 struct message *msg;
1863
1864 if (!(msg = mem_alloc( sizeof(*msg) ))) return;
1865 if (!(msg_data = mem_alloc( sizeof(*msg_data) )))
1866 {
1867 free( msg );
1868 return;
1869 }
1870 memset( msg_data, 0, sizeof(*msg_data) );
1871
1872 msg->type = MSG_HARDWARE;
1873 msg->win = get_user_full_handle( win );
1874 msg->msg = input->hw.msg;
1875 msg->wparam = 0;
1876 msg->lparam = input->hw.lparam;
1877 msg->x = desktop->cursor.x;
1878 msg->y = desktop->cursor.y;
1879 msg->time = get_tick_count();
1880 msg->result = NULL;
1881 msg->data = msg_data;
1882 msg->data_size = sizeof(*msg_data);
1883
1884 queue_hardware_message( desktop, msg, 1 );
1885 }
1886
1887 /* check message filter for a hardware message */
1888 static int check_hw_message_filter( user_handle_t win, unsigned int msg_code,
1889 user_handle_t filter_win, unsigned int first, unsigned int last )
1890 {
1891 if (msg_code >= WM_KEYFIRST && msg_code <= WM_KEYLAST)
1892 {
1893 /* we can only test the window for a keyboard message since the
1894 * dest window for a mouse message depends on hittest */
1895 if (filter_win && win != filter_win && !is_child_window( filter_win, win ))
1896 return 0;
1897 /* the message code is final for a keyboard message, we can simply check it */
1898 return check_msg_filter( msg_code, first, last );
1899 }
1900 else /* mouse message */
1901 {
1902 /* we need to check all possible values that the message can have in the end */
1903
1904 if (check_msg_filter( msg_code, first, last )) return 1;
1905 if (msg_code == WM_MOUSEWHEEL) return 0; /* no other possible value for this one */
1906
1907 /* all other messages can become non-client messages */
1908 if (check_msg_filter( msg_code + (WM_NCMOUSEFIRST - WM_MOUSEFIRST), first, last )) return 1;
1909
1910 /* clicks can become double-clicks or non-client double-clicks */
1911 if (msg_code == WM_LBUTTONDOWN || msg_code == WM_MBUTTONDOWN ||
1912 msg_code == WM_RBUTTONDOWN || msg_code == WM_XBUTTONDOWN)
1913 {
1914 if (check_msg_filter( msg_code + (WM_LBUTTONDBLCLK - WM_LBUTTONDOWN), first, last )) return 1;
1915 if (check_msg_filter( msg_code + (WM_NCLBUTTONDBLCLK - WM_LBUTTONDOWN), first, last )) return 1;
1916 }
1917 return 0;
1918 }
1919 }
1920
1921
1922 /* find a hardware message for the given queue */
1923 static int get_hardware_message( struct thread *thread, unsigned int hw_id, user_handle_t filter_win,
1924 unsigned int first, unsigned int last, unsigned int flags,
1925 struct get_message_reply *reply )
1926 {
1927 struct thread_input *input = thread->queue->input;
1928 struct thread *win_thread;
1929 struct list *ptr;
1930 user_handle_t win;
1931 int clear_bits, got_one = 0;
1932 unsigned int msg_code;
1933
1934 ptr = list_head( &input->msg_list );
1935 if (hw_id)
1936 {
1937 while (ptr)
1938 {
1939 struct message *msg = LIST_ENTRY( ptr, struct message, entry );
1940 if (msg->unique_id == hw_id) break;
1941 ptr = list_next( &input->msg_list, ptr );
1942 }
1943 if (!ptr) ptr = list_head( &input->msg_list );
1944 else ptr = list_next( &input->msg_list, ptr ); /* start from the next one */
1945 }
1946
1947 if (ptr == list_head( &input->msg_list ))
1948 clear_bits = QS_INPUT;
1949 else
1950 clear_bits = 0; /* don't clear bits if we don't go through the whole list */
1951
1952 while (ptr)
1953 {
1954 struct message *msg = LIST_ENTRY( ptr, struct message, entry );
1955 struct hardware_msg_data *data = msg->data;
1956
1957 ptr = list_next( &input->msg_list, ptr );
1958 win = find_hardware_message_window( input->desktop, input, msg, &msg_code, &win_thread );
1959 if (!win || !win_thread)
1960 {
1961 /* no window at all, remove it */
1962 update_input_key_state( input->desktop, input->keystate, msg );
1963 list_remove( &msg->entry );
1964 free_message( msg );
1965 continue;
1966 }
1967 if (win_thread != thread)
1968 {
1969 if (win_thread->queue->input == input)
1970 {
1971 /* wake the other thread */
1972 set_queue_bits( win_thread->queue, get_hardware_msg_bit(msg) );
1973 got_one = 1;
1974 }
1975 else
1976 {
1977 /* for another thread input, drop it */
1978 update_input_key_state( input->desktop, input->keystate, msg );
1979 list_remove( &msg->entry );
1980 free_message( msg );
1981 }
1982 release_object( win_thread );
1983 continue;
1984 }
1985 release_object( win_thread );
1986
1987 /* if we already got a message for another thread, or if it doesn't
1988 * match the filter we skip it */
1989 if (got_one || !check_hw_message_filter( win, msg_code, filter_win, first, last ))
1990 {
1991 clear_bits &= ~get_hardware_msg_bit( msg );
1992 continue;
1993 }
1994 /* now we can return it */
1995 if (!msg->unique_id) msg->unique_id = get_unique_id();
1996 reply->type = MSG_HARDWARE;
1997 reply->win = win;
1998 reply->msg = msg_code;
1999 reply->wparam = msg->wparam;
2000 reply->lparam = msg->lparam;
2001 reply->x = msg->x;
2002 reply->y = msg->y;
2003 reply->time = msg->time;
2004
2005 data->hw_id = msg->unique_id;
2006 set_reply_data( msg->data, msg->data_size );
2007 if (msg->msg == WM_INPUT && (flags & PM_REMOVE))
2008 release_hardware_message( current->queue, data->hw_id, 1 );
2009 return 1;
2010 }
2011 /* nothing found, clear the hardware queue bits */
2012 clear_queue_bits( thread->queue, clear_bits );
2013 return 0;
2014 }
2015
2016 /* increment (or decrement if 'incr' is negative) the queue paint count */
2017 void inc_queue_paint_count( struct thread *thread, int incr )
2018 {
2019 struct msg_queue *queue = thread->queue;
2020
2021 assert( queue );
2022
2023 if ((queue->paint_count += incr) < 0) queue->paint_count = 0;
2024
2025 if (queue->paint_count)
2026 set_queue_bits( queue, QS_PAINT );
2027 else
2028 clear_queue_bits( queue, QS_PAINT );
2029 }
2030
2031
2032 /* remove all messages and timers belonging to a certain window */
2033 void queue_cleanup_window( struct thread *thread, user_handle_t win )
2034 {
2035 struct msg_queue *queue = thread->queue;
2036 struct list *ptr;
2037 int i;
2038
2039 if (!queue) return;
2040
2041 /* remove timers */
2042
2043 ptr = list_head( &queue->pending_timers );
2044 while (ptr)
2045 {
2046 struct list *next = list_next( &queue->pending_timers, ptr );
2047 struct timer *timer = LIST_ENTRY( ptr, struct timer, entry );
2048 if (timer->win == win) free_timer( queue, timer );
2049 ptr = next;
2050 }
2051 ptr = list_head( &queue->expired_timers );
2052 while (ptr)
2053 {
2054 struct list *next = list_next( &queue->expired_timers, ptr );
2055 struct timer *timer = LIST_ENTRY( ptr, struct timer, entry );
2056 if (timer->win == win) free_timer( queue, timer );
2057 ptr = next;
2058 }
2059
2060 /* remove messages */
2061 for (i = 0; i < NB_MSG_KINDS; i++)
2062 {
2063 struct list *ptr, *next;
2064
2065 LIST_FOR_EACH_SAFE( ptr, next, &queue->msg_list[i] )
2066 {
2067 struct message *msg = LIST_ENTRY( ptr, struct message, entry );
2068 if (msg->win == win)
2069 {
2070 if (msg->msg == WM_QUIT && !queue->quit_message)
2071 {
2072 queue->quit_message = 1;
2073 queue->exit_code = msg->wparam;
2074 }
2075 remove_queue_message( queue, msg, i );
2076 }
2077 }
2078 }
2079
2080 thread_input_cleanup_window( queue, win );
2081 }
2082
2083 /* post a message to a window */
2084 void post_message( user_handle_t win, unsigned int message, lparam_t wparam, lparam_t lparam )
2085 {
2086 struct message *msg;
2087 struct thread *thread = get_window_thread( win );
2088
2089 if (!thread) return;
2090
2091 if (thread->queue && (msg = mem_alloc( sizeof(*msg) )))
2092 {
2093 msg->type = MSG_POSTED;
2094 msg->win = get_user_full_handle( win );
2095 msg->msg = message;
2096 msg->wparam = wparam;
2097 msg->lparam = lparam;
2098 msg->result = NULL;
2099 msg->data = NULL;
2100 msg->data_size = 0;
2101
2102 get_message_defaults( thread->queue, &msg->x, &msg->y, &msg->time );
2103
2104 list_add_tail( &thread->queue->msg_list[POST_MESSAGE], &msg->entry );
2105 set_queue_bits( thread->queue, QS_POSTMESSAGE|QS_ALLPOSTMESSAGE );
2106 if (message == WM_HOTKEY)
2107 {
2108 set_queue_bits( thread->queue, QS_HOTKEY );
2109 thread->queue->hotkey_count++;
2110 }
2111 }
2112 release_object( thread );
2113 }
2114
2115 /* send a notify message to a window */
2116 void send_notify_message( user_handle_t win, unsigned int message, lparam_t wparam, lparam_t lparam )
2117 {
2118 struct message *msg;
2119 struct thread *thread = get_window_thread( win );
2120
2121 if (!thread) return;
2122
2123 if (thread->queue && (msg = mem_alloc( sizeof(*msg) )))
2124 {
2125 msg->type = MSG_NOTIFY;
2126 msg->win = get_user_full_handle( win );
2127 msg->msg = message;
2128 msg->wparam = wparam;
2129 msg->lparam = lparam;
2130 msg->result = NULL;
2131 msg->data = NULL;
2132 msg->data_size = 0;
2133
2134 get_message_defaults( thread->queue, &msg->x, &msg->y, &msg->time );
2135
2136 list_add_tail( &thread->queue->msg_list[SEND_MESSAGE], &msg->entry );
2137 set_queue_bits( thread->queue, QS_SENDMESSAGE );
2138 }
2139 release_object( thread );
2140 }
2141
2142 /* post a win event */
2143 void post_win_event( struct thread *thread, unsigned int event,
2144 user_handle_t win, unsigned int object_id,
2145 unsigned int child_id, client_ptr_t hook_proc,
2146 const WCHAR *module, data_size_t module_size,
2147 user_handle_t hook)
2148 {
2149 struct message *msg;
2150
2151 if (thread->queue && (msg = mem_alloc( sizeof(*msg) )))
2152 {
2153 struct winevent_msg_data *data;
2154
2155 msg->type = MSG_WINEVENT;
2156 msg->win = get_user_full_handle( win );
2157 msg->msg = event;
2158 msg->wparam = object_id;
2159 msg->lparam = child_id;
2160 msg->time = get_tick_count();
2161 msg->result = NULL;
2162
2163 if ((data = malloc( sizeof(*data) + module_size )))
2164 {
2165 data->hook = hook;
2166 data->tid = get_thread_id( current );
2167 data->hook_proc = hook_proc;
2168 memcpy( data + 1, module, module_size );
2169
2170 msg->data = data;
2171 msg->data_size = sizeof(*data) + module_size;
2172
2173 if (debug_level > 1)
2174 fprintf( stderr, "post_win_event: tid %04x event %04x win %08x object_id %d child_id %d\n",
2175 get_thread_id(thread), event, win, object_id, child_id );
2176 list_add_tail( &thread->queue->msg_list[SEND_MESSAGE], &msg->entry );
2177 set_queue_bits( thread->queue, QS_SENDMESSAGE );
2178 }
2179 else
2180 free( msg );
2181 }
2182 }
2183
2184 /* free all hotkeys on a desktop, optionally filtering by window */
2185 void free_hotkeys( struct desktop *desktop, user_handle_t window )
2186 {
2187 struct hotkey *hotkey, *hotkey2;
2188
2189 LIST_FOR_EACH_ENTRY_SAFE( hotkey, hotkey2, &desktop->hotkeys, struct hotkey, entry )
2190 {
2191 if (!window || hotkey->win == window)
2192 {
2193 list_remove( &hotkey->entry );
2194 free( hotkey );
2195 }
2196 }
2197 }
2198
2199
2200 /* check if the thread owning the window is hung */
2201 DECL_HANDLER(is_window_hung)
2202 {
2203 struct thread *thread;
2204
2205 thread = get_window_thread( req->win );
2206 if (thread)
2207 {
2208 reply->is_hung = is_queue_hung( thread->queue );
2209 release_object( thread );
2210 }
2211 else reply->is_hung = 0;
2212 }
2213
2214
2215 /* get the message queue of the current thread */
2216 DECL_HANDLER(get_msg_queue)
2217 {
2218 struct msg_queue *queue = get_current_queue();
2219
2220 reply->handle = 0;
2221 if (queue) reply->handle = alloc_handle( current->process, queue, SYNCHRONIZE, 0 );
2222 }
2223
2224
2225 /* set the file descriptor associated to the current thread queue */
2226 DECL_HANDLER(set_queue_fd)
2227 {
2228 struct msg_queue *queue = get_current_queue();
2229 struct file *file;
2230 int unix_fd;
2231
2232 if (queue->fd) /* fd can only be set once */
2233 {
2234 set_error( STATUS_ACCESS_DENIED );
2235 return;
2236 }
2237 if (!(file = get_file_obj( current->process, req->handle, SYNCHRONIZE ))) return;
2238
2239 if ((unix_fd = get_file_unix_fd( file )) != -1)
2240 {
2241 if ((unix_fd = dup( unix_fd )) != -1)
2242 queue->fd = create_anonymous_fd( &msg_queue_fd_ops, unix_fd, &queue->obj, 0 );
2243 else
2244 file_set_error();
2245 }
2246 release_object( file );
2247 }
2248
2249
2250 /* set the current message queue wakeup mask */
2251 DECL_HANDLER(set_queue_mask)
2252 {
2253 struct msg_queue *queue = get_current_queue();
2254
2255 if (queue)
2256 {
2257 queue->wake_mask = req->wake_mask;
2258 queue->changed_mask = req->changed_mask;
2259 reply->wake_bits = queue->wake_bits;
2260 reply->changed_bits = queue->changed_bits;
2261 if (is_signaled( queue ))
2262 {
2263 /* if skip wait is set, do what would have been done in the subsequent wait */
2264 if (req->skip_wait) queue->wake_mask = queue->changed_mask = 0;
2265 else wake_up( &queue->obj, 0 );
2266 }
2267 }
2268 }
2269
2270
2271 /* get the current message queue status */
2272 DECL_HANDLER(get_queue_status)
2273 {
2274 struct msg_queue *queue = current->queue;
2275 if (queue)
2276 {
2277 reply->wake_bits = queue->wake_bits;
2278 reply->changed_bits = queue->changed_bits;
2279 queue->changed_bits &= ~req->clear_bits;
2280 }
2281 else reply->wake_bits = reply->changed_bits = 0;
2282 }
2283
2284
2285 /* send a message to a thread queue */
2286 DECL_HANDLER(send_message)
2287 {
2288 struct message *msg;
2289 struct msg_queue *send_queue = get_current_queue();
2290 struct msg_queue *recv_queue = NULL;
2291 struct thread *thread = NULL;
2292
2293 if (!(thread = get_thread_from_id( req->id ))) return;
2294
2295 if (!(recv_queue = thread->queue))
2296 {
2297 set_error( STATUS_INVALID_PARAMETER );
2298 release_object( thread );
2299 return;
2300 }
2301 if ((req->flags & SEND_MSG_ABORT_IF_HUNG) && is_queue_hung(recv_queue))
2302 {
2303 set_error( STATUS_TIMEOUT );
2304 release_object( thread );
2305 return;
2306 }
2307
2308 if ((msg = mem_alloc( sizeof(*msg) )))
2309 {
2310 msg->type = req->type;
2311 msg->win = get_user_full_handle( req->win );
2312 msg->msg = req->msg;
2313 msg->wparam = req->wparam;
2314 msg->lparam = req->lparam;
2315 msg->result = NULL;
2316 msg->data = NULL;
2317 msg->data_size = get_req_data_size();
2318
2319 get_message_defaults( recv_queue, &msg->x, &msg->y, &msg->time );
2320
2321 if (msg->data_size && !(msg->data = memdup( get_req_data(), msg->data_size )))
2322 {
2323 free( msg );
2324 release_object( thread );
2325 return;
2326 }
2327
2328 switch(msg->type)
2329 {
2330 case MSG_OTHER_PROCESS:
2331 case MSG_ASCII:
2332 case MSG_UNICODE:
2333 case MSG_CALLBACK:
2334 if (!(msg->result = alloc_message_result( send_queue, recv_queue, msg, req->timeout )))
2335 {
2336 free_message( msg );
2337 break;
2338 }
2339 /* fall through */
2340 case MSG_NOTIFY:
2341 list_add_tail( &recv_queue->msg_list[SEND_MESSAGE], &msg->entry );
2342 set_queue_bits( recv_queue, QS_SENDMESSAGE );
2343 break;
2344 case MSG_POSTED:
2345 list_add_tail( &recv_queue->msg_list[POST_MESSAGE], &msg->entry );
2346 set_queue_bits( recv_queue, QS_POSTMESSAGE|QS_ALLPOSTMESSAGE );
2347 if (msg->msg == WM_HOTKEY)
2348 {
2349 set_queue_bits( recv_queue, QS_HOTKEY );
2350 recv_queue->hotkey_count++;
2351 }
2352 break;
2353 case MSG_HARDWARE: /* should use send_hardware_message instead */
2354 case MSG_CALLBACK_RESULT: /* cannot send this one */
2355 case MSG_HOOK_LL: /* generated internally */
2356 default:
2357 set_error( STATUS_INVALID_PARAMETER );
2358 free( msg );
2359 break;
2360 }
2361 }
2362 release_object( thread );
2363 }
2364
2365 /* send a hardware message to a thread queue */
2366 DECL_HANDLER(send_hardware_message)
2367 {
2368 struct thread *thread = NULL;
2369 struct desktop *desktop;
2370 struct msg_queue *sender = get_current_queue();
2371 data_size_t size = min( 256, get_reply_max_size() );
2372
2373 if (!(desktop = get_thread_desktop( current, 0 ))) return;
2374
2375 if (req->win)
2376 {
2377 if (!(thread = get_window_thread( req->win ))) return;
2378 if (desktop != thread->queue->input->desktop)
2379 {
2380 /* don't allow queuing events to a different desktop */
2381 release_object( desktop );
2382 return;
2383 }
2384 }
2385
2386 reply->prev_x = desktop->cursor.x;
2387 reply->prev_y = desktop->cursor.y;
2388
2389 switch (req->input.type)
2390 {
2391 case INPUT_MOUSE:
2392 reply->wait = queue_mouse_message( desktop, req->win, &req->input, req->flags, sender );
2393 break;
2394 case INPUT_KEYBOARD:
2395 reply->wait = queue_keyboard_message( desktop, req->win, &req->input, req->flags, sender );
2396 break;
2397 case INPUT_HARDWARE:
2398 queue_custom_hardware_message( desktop, req->win, &req->input );
2399 break;
2400 default:
2401 set_error( STATUS_INVALID_PARAMETER );
2402 }
2403 if (thread) release_object( thread );
2404
2405 reply->new_x = desktop->cursor.x;
2406 reply->new_y = desktop->cursor.y;
2407 set_reply_data( desktop->keystate, size );
2408 release_object( desktop );
2409 }
2410
2411 /* post a quit message to the current queue */
2412 DECL_HANDLER(post_quit_message)
2413 {
2414 struct msg_queue *queue = get_current_queue();
2415
2416 if (!queue)
2417 return;
2418
2419 queue->quit_message = 1;
2420 queue->exit_code = req->exit_code;
2421 set_queue_bits( queue, QS_POSTMESSAGE|QS_ALLPOSTMESSAGE );
2422 }
2423
2424 /* get a message from the current queue */
2425 DECL_HANDLER(get_message)
2426 {
2427 struct timer *timer;
2428 struct list *ptr;
2429 struct msg_queue *queue = get_current_queue();
2430 user_handle_t get_win = get_user_full_handle( req->get_win );
2431 unsigned int filter = req->flags >> 16;
2432
2433 reply->active_hooks = get_active_hooks();
2434
2435 if (!queue) return;
2436 queue->last_get_msg = current_time;
2437 if (!filter) filter = QS_ALLINPUT;
2438
2439 /* first check for sent messages */
2440 if ((ptr = list_head( &queue->msg_list[SEND_MESSAGE] )))
2441 {
2442 struct message *msg = LIST_ENTRY( ptr, struct message, entry );
2443 receive_message( queue, msg, reply );
2444 return;
2445 }
2446
2447 /* clear changed bits so we can wait on them if we don't find a message */
2448 if (filter & QS_POSTMESSAGE)
2449 {
2450 queue->changed_bits &= ~(QS_POSTMESSAGE | QS_HOTKEY | QS_TIMER);
2451 if (req->get_first == 0 && req->get_last == ~0U) queue->changed_bits &= ~QS_ALLPOSTMESSAGE;
2452 }
2453 if (filter & QS_INPUT) queue->changed_bits &= ~QS_INPUT;
2454 if (filter & QS_PAINT) queue->changed_bits &= ~QS_PAINT;
2455
2456 /* then check for posted messages */
2457 if ((filter & QS_POSTMESSAGE) &&
2458 get_posted_message( queue, get_win, req->get_first, req->get_last, req->flags, reply ))
2459 return;
2460
2461 if ((filter & QS_HOTKEY) && queue->hotkey_count &&
2462 req->get_first <= WM_HOTKEY && req->get_last >= WM_HOTKEY &&
2463 get_posted_message( queue, get_win, WM_HOTKEY, WM_HOTKEY, req->flags, reply ))
2464 return;
2465
2466 /* only check for quit messages if not posted messages pending */
2467 if ((filter & QS_POSTMESSAGE) && get_quit_message( queue, req->flags, reply ))
2468 return;
2469
2470 /* then check for any raw hardware message */
2471 if ((filter & QS_INPUT) &&
2472 filter_contains_hw_range( req->get_first, req->get_last ) &&
2473 get_hardware_message( current, req->hw_id, get_win, req->get_first, req->get_last, req->flags, reply ))
2474 return;
2475
2476 /* now check for WM_PAINT */
2477 if ((filter & QS_PAINT) &&
2478 queue->paint_count &&
2479 check_msg_filter( WM_PAINT, req->get_first, req->get_last ) &&
2480 (reply->win = find_window_to_repaint( get_win, current )))
2481 {
2482 reply->type = MSG_POSTED;
2483 reply->msg = WM_PAINT;
2484 reply->wparam = 0;
2485 reply->lparam = 0;
2486 get_message_defaults( queue, &reply->x, &reply->y, &reply->time );
2487 return;
2488 }
2489
2490 /* now check for timer */
2491 if ((filter & QS_TIMER) &&
2492 (timer = find_expired_timer( queue, get_win, req->get_first,
2493 req->get_last, (req->flags & PM_REMOVE) )))
2494 {
2495 reply->type = MSG_POSTED;
2496 reply->win = timer->win;
2497 reply->msg = timer->msg;
2498 reply->wparam = timer->id;
2499 reply->lparam = timer->lparam;
2500 get_message_defaults( queue, &reply->x, &reply->y, &reply->time );
2501 if (!(req->flags & PM_NOYIELD) && current->process->idle_event)
2502 set_event( current->process->idle_event );
2503 return;
2504 }
2505
2506 if (get_win == -1 && current->process->idle_event) set_event( current->process->idle_event );
2507 queue->wake_mask = req->wake_mask;
2508 queue->changed_mask = req->changed_mask;
2509 set_error( STATUS_PENDING ); /* FIXME */
2510 }
2511
2512
2513 /* reply to a sent message */
2514 DECL_HANDLER(reply_message)
2515 {
2516 if (!current->queue) set_error( STATUS_ACCESS_DENIED );
2517 else if (current->queue->recv_result)
2518 reply_message( current->queue, req->result, 0, req->remove,
2519 get_req_data(), get_req_data_size() );
2520 }
2521
2522
2523 /* accept the current hardware message */
2524 DECL_HANDLER(accept_hardware_message)
2525 {
2526 if (current->queue)
2527 release_hardware_message( current->queue, req->hw_id, req->remove );
2528 else
2529 set_error( STATUS_ACCESS_DENIED );
2530 }
2531
2532
2533 /* retrieve the reply for the last message sent */
2534 DECL_HANDLER(get_message_reply)
2535 {
2536 struct message_result *result;
2537 struct list *entry;
2538 struct msg_queue *queue = current->queue;
2539
2540 if (queue)
2541 {
2542 set_error( STATUS_PENDING );
2543 reply->result = 0;
2544
2545 if (!(entry = list_head( &queue->send_result ))) return; /* no reply ready */
2546
2547 result = LIST_ENTRY( entry, struct message_result, sender_entry );
2548 if (result->replied || req->cancel)
2549 {
2550 if (result->replied)
2551 {
2552 reply->result = result->result;
2553 set_error( result->error );
2554 if (result->data)
2555 {
2556 data_size_t data_len = min( result->data_size, get_reply_max_size() );
2557 set_reply_data_ptr( result->data, data_len );
2558 result->data = NULL;
2559 result->data_size = 0;
2560 }
2561 }
2562 remove_result_from_sender( result );
2563
2564 entry = list_head( &queue->send_result );
2565 if (!entry) clear_queue_bits( queue, QS_SMRESULT );
2566 else
2567 {
2568 result = LIST_ENTRY( entry, struct message_result, sender_entry );
2569 if (result->replied) set_queue_bits( queue, QS_SMRESULT );
2570 else clear_queue_bits( queue, QS_SMRESULT );
2571 }
2572 }
2573 }
2574 else set_error( STATUS_ACCESS_DENIED );
2575 }
2576
2577
2578 /* set a window timer */
2579 DECL_HANDLER(set_win_timer)
2580 {
2581 struct timer *timer;
2582 struct msg_queue *queue;
2583 struct thread *thread = NULL;
2584 user_handle_t win = 0;
2585 lparam_t id = req->id;
2586
2587 if (req->win)
2588 {
2589 if (!(win = get_user_full_handle( req->win )) || !(thread = get_window_thread( win )))
2590 {
2591 set_error( STATUS_INVALID_HANDLE );
2592 return;
2593 }
2594 if (thread->process != current->process)
2595 {
2596 release_object( thread );
2597 set_error( STATUS_ACCESS_DENIED );
2598 return;
2599 }
2600 queue = thread->queue;
2601 /* remove it if it existed already */
2602 if ((timer = find_timer( queue, win, req->msg, id ))) free_timer( queue, timer );
2603 }
2604 else
2605 {
2606 queue = get_current_queue();
2607 /* look for a timer with this id */
2608 if (id && (timer = find_timer( queue, 0, req->msg, id )))
2609 {
2610 /* free and reuse id */
2611 free_timer( queue, timer );
2612 }
2613 else
2614 {
2615 lparam_t end_id = queue->next_timer_id;
2616
2617 /* find a free id for it */
2618 while (1)
2619 {
2620 id = queue->next_timer_id;
2621 if (--queue->next_timer_id <= 0x100) queue->next_timer_id = 0x7fff;
2622
2623 if (!find_timer( queue, 0, req->msg, id )) break;
2624 if (queue->next_timer_id == end_id)
2625 {
2626 set_win32_error( ERROR_NO_MORE_USER_HANDLES );
2627 return;
2628 }
2629 }
2630 }
2631 }
2632
2633 if ((timer = set_timer( queue, req->rate )))
2634 {
2635 timer->win = win;
2636 timer->msg = req->msg;
2637 timer->id = id;
2638 timer->lparam = req->lparam;
2639 reply->id = id;
2640 }
2641 if (thread) release_object( thread );
2642 }
2643
2644 /* kill a window timer */
2645 DECL_HANDLER(kill_win_timer)
2646 {
2647 struct timer *timer;
2648 struct thread *thread;
2649 user_handle_t win = 0;
2650
2651 if (req->win)
2652 {
2653 if (!(win = get_user_full_handle( req->win )) || !(thread = get_window_thread( win )))
2654 {
2655 set_error( STATUS_INVALID_HANDLE );
2656 return;
2657 }
2658 if (thread->process != current->process)
2659 {
2660 release_object( thread );
2661 set_error( STATUS_ACCESS_DENIED );
2662 return;
2663 }
2664 }
2665 else thread = (struct thread *)grab_object( current );
2666
2667 if (thread->queue && (timer = find_timer( thread->queue, win, req->msg, req->id )))
2668 free_timer( thread->queue, timer );
2669 else
2670 set_error( STATUS_INVALID_PARAMETER );
2671
2672 release_object( thread );
2673 }
2674
2675 DECL_HANDLER(register_hotkey)
2676 {
2677 struct desktop *desktop;
2678 user_handle_t win_handle = req->window;
2679 struct hotkey *hotkey;
2680 struct hotkey *new_hotkey = NULL;
2681 struct thread *thread;
2682 const int modifier_flags = MOD_ALT|MOD_CONTROL|MOD_SHIFT|MOD_WIN;
2683
2684 if (!(desktop = get_thread_desktop( current, 0 ))) return;
2685
2686 if (win_handle)
2687 {
2688 if (!(win_handle = get_valid_window_handle( win_handle )))
2689 {
2690 release_object( desktop );
2691 return;
2692 }
2693
2694 thread = get_window_thread( win_handle );
2695 if (thread) release_object( thread );
2696
2697 if (thread != current)
2698 {
2699 release_object( desktop );
2700 set_win32_error( ERROR_WINDOW_OF_OTHER_THREAD );
2701 return;
2702 }
2703 }
2704
2705 LIST_FOR_EACH_ENTRY( hotkey, &desktop->hotkeys, struct hotkey, entry )
2706 {
2707 if (req->vkey == hotkey->vkey &&
2708 (req->flags & modifier_flags) == (hotkey->flags & modifier_flags))
2709 {
2710 release_object( desktop );
2711 set_win32_error( ERROR_HOTKEY_ALREADY_REGISTERED );
2712 return;
2713 }
2714 if (current->queue == hotkey->queue && win_handle == hotkey->win && req->id == hotkey->id)
2715 new_hotkey = hotkey;
2716 }
2717
2718 if (new_hotkey)
2719 {
2720 reply->replaced = 1;
2721 reply->flags = new_hotkey->flags;
2722 reply->vkey = new_hotkey->vkey;
2723 }
2724 else
2725 {
2726 new_hotkey = mem_alloc( sizeof(*new_hotkey) );
2727 if (new_hotkey)
2728 {
2729 list_add_tail( &desktop->hotkeys, &new_hotkey->entry );
2730 new_hotkey->queue = current->queue;
2731 new_hotkey->win = win_handle;
2732 new_hotkey->id = req->id;
2733 }
2734 }
2735
2736 if (new_hotkey)
2737 {
2738 new_hotkey->flags = req->flags;
2739 new_hotkey->vkey = req->vkey;
2740 }
2741
2742 release_object( desktop );
2743 }
2744
2745 DECL_HANDLER(unregister_hotkey)
2746 {
2747 struct desktop *desktop;
2748 user_handle_t win_handle = req->window;
2749 struct hotkey *hotkey;
2750 struct thread *thread;
2751
2752 if (!(desktop = get_thread_desktop( current, 0 ))) return;
2753
2754 if (win_handle)
2755 {
2756 if (!(win_handle = get_valid_window_handle( win_handle )))
2757 {
2758 release_object( desktop );
2759 return;
2760 }
2761
2762 thread = get_window_thread( win_handle );
2763 if (thread) release_object( thread );
2764
2765 if (thread != current)
2766 {
2767 release_object( desktop );
2768 set_win32_error( ERROR_WINDOW_OF_OTHER_THREAD );
2769 return;
2770 }
2771 }
2772
2773 LIST_FOR_EACH_ENTRY( hotkey, &desktop->hotkeys, struct hotkey, entry )
2774 {
2775 if (current->queue == hotkey->queue && win_handle == hotkey->win && req->id == hotkey->id)
2776 goto found;
2777 }
2778
2779 release_object( desktop );
2780 set_win32_error( ERROR_HOTKEY_NOT_REGISTERED );
2781 return;
2782
2783 found:
2784 reply->flags = hotkey->flags;
2785 reply->vkey = hotkey->vkey;
2786 list_remove( &hotkey->entry );
2787 free( hotkey );
2788 release_object( desktop );
2789 }
2790
2791 /* attach (or detach) thread inputs */
2792 DECL_HANDLER(attach_thread_input)
2793 {
2794 struct thread *thread_from = get_thread_from_id( req->tid_from );
2795 struct thread *thread_to = get_thread_from_id( req->tid_to );
2796
2797 if (!thread_from || !thread_to)
2798 {
2799 if (thread_from) release_object( thread_from );
2800 if (thread_to) release_object( thread_to );
2801 return;
2802 }
2803 if (thread_from != thread_to)
2804 {
2805 if (req->attach)
2806 {
2807 if ((thread_to->queue || thread_to == current) &&
2808 (thread_from->queue || thread_from == current))
2809 attach_thread_input( thread_from, thread_to );
2810 else
2811 set_error( STATUS_INVALID_PARAMETER );
2812 }
2813 else
2814 {
2815 if (thread_from->queue && thread_to->queue &&
2816 thread_from->queue->input == thread_to->queue->input)
2817 detach_thread_input( thread_from );
2818 else
2819 set_error( STATUS_ACCESS_DENIED );
2820 }
2821 }
2822 else set_error( STATUS_ACCESS_DENIED );
2823 release_object( thread_from );
2824 release_object( thread_to );
2825 }
2826
2827
2828 /* get thread input data */
2829 DECL_HANDLER(get_thread_input)
2830 {
2831 struct thread *thread = NULL;
2832 struct desktop *desktop;
2833 struct thread_input *input;
2834
2835 if (req->tid)
2836 {
2837 if (!(thread = get_thread_from_id( req->tid ))) return;
2838 if (!(desktop = get_thread_desktop( thread, 0 )))
2839 {
2840 release_object( thread );
2841 return;
2842 }
2843 input = thread->queue ? thread->queue->input : NULL;
2844 }
2845 else
2846 {
2847 if (!(desktop = get_thread_desktop( current, 0 ))) return;
2848 input = desktop->foreground_input; /* get the foreground thread info */
2849 }
2850
2851 if (input)
2852 {
2853 reply->focus = input->focus;
2854 reply->capture = input->capture;
2855 reply->active = input->active;
2856 reply->menu_owner = input->menu_owner;
2857 reply->move_size = input->move_size;
2858 reply->caret = input->caret;
2859 reply->cursor = input->cursor;
2860 reply->show_count = input->cursor_count;
2861 reply->rect = input->caret_rect;
2862 }
2863
2864 /* foreground window is active window of foreground thread */
2865 reply->foreground = desktop->foreground_input ? desktop->foreground_input->active : 0;
2866 if (thread) release_object( thread );
2867 release_object( desktop );
2868 }
2869
2870
2871 /* retrieve queue keyboard state for a given thread */
2872 DECL_HANDLER(get_key_state)
2873 {
2874 struct thread *thread;
2875 struct desktop *desktop;
2876 data_size_t size = min( 256, get_reply_max_size() );
2877
2878 if (!req->tid) /* get global async key state */
2879 {
2880 if (!(desktop = get_thread_desktop( current, 0 ))) return;
2881 if (req->key >= 0)
2882 {
2883 reply->state = desktop->keystate[req->key & 0xff];
2884 desktop->keystate[req->key & 0xff] &= ~0x40;
2885 }
2886 set_reply_data( desktop->keystate, size );
2887 release_object( desktop );
2888 }
2889 else
2890 {
2891 unsigned char *keystate;
2892 if (!(thread = get_thread_from_id( req->tid ))) return;
2893 if (thread->queue)
2894 {
2895 if (req->key >= 0) reply->state = thread->queue->input->keystate[req->key & 0xff];
2896 set_reply_data( thread->queue->input->keystate, size );
2897 release_object( thread );
2898 return;
2899 }
2900 release_object( thread );
2901
2902 /* fallback to desktop keystate */
2903 if (!(desktop = get_thread_desktop( current, 0 ))) return;
2904 if (req->key >= 0) reply->state = desktop->keystate[req->key & 0xff] & ~0x40;
2905 if ((keystate = set_reply_data_size( size )))
2906 {
2907 unsigned int i;
2908 for (i = 0; i < size; i++) keystate[i] = desktop->keystate[i] & ~0x40;
2909 }
2910 release_object( desktop );
2911 }
2912 }
2913
2914
2915 /* set queue keyboard state for a given thread */
2916 DECL_HANDLER(set_key_state)
2917 {
2918 struct thread *thread;
2919 struct desktop *desktop;
2920 data_size_t size = min( 256, get_req_data_size() );
2921
2922 if (!req->tid) /* set global async key state */
2923 {
2924 if (!(desktop = get_thread_desktop( current, 0 ))) return;
2925 memcpy( desktop->keystate, get_req_data(), size );
2926 release_object( desktop );
2927 }
2928 else
2929 {
2930 if (!(thread = get_thread_from_id( req->tid ))) return;
2931 if (thread->queue) memcpy( thread->queue->input->keystate, get_req_data(), size );
2932 if (req->async && (desktop = get_thread_desktop( thread, 0 )))
2933 {
2934 memcpy( desktop->keystate, get_req_data(), size );
2935 release_object( desktop );
2936 }
2937 release_object( thread );
2938 }
2939 }
2940
2941
2942 /* set the system foreground window */
2943 DECL_HANDLER(set_foreground_window)
2944 {
2945 struct thread *thread = NULL;
2946 struct desktop *desktop;
2947 struct msg_queue *queue = get_current_queue();
2948
2949 if (!(desktop = get_thread_desktop( current, 0 ))) return;
2950 reply->previous = desktop->foreground_input ? desktop->foreground_input->active : 0;
2951 reply->send_msg_old = (reply->previous && desktop->foreground_input != queue->input);
2952 reply->send_msg_new = FALSE;
2953
2954 if (is_valid_foreground_window( req->handle ) &&
2955 (thread = get_window_thread( req->handle )) &&
2956 thread->queue->input->desktop == desktop)
2957 {
2958 set_foreground_input( desktop, thread->queue->input );
2959 reply->send_msg_new = (desktop->foreground_input != queue->input);
2960 }
2961 else set_win32_error( ERROR_INVALID_WINDOW_HANDLE );
2962
2963 if (thread) release_object( thread );
2964 release_object( desktop );
2965 }
2966
2967
2968 /* set the current thread focus window */
2969 DECL_HANDLER(set_focus_window)
2970 {
2971 struct msg_queue *queue = get_current_queue();
2972
2973 reply->previous = 0;
2974 if (queue && check_queue_input_window( queue, req->handle ))
2975 {
2976 reply->previous = queue->input->focus;
2977 queue->input->focus = get_user_full_handle( req->handle );
2978 }
2979 }
2980
2981
2982 /* set the current thread active window */
2983 DECL_HANDLER(set_active_window)
2984 {
2985 struct msg_queue *queue = get_current_queue();
2986
2987 reply->previous = 0;
2988 if (queue && check_queue_input_window( queue, req->handle ))
2989 {
2990 if (!req->handle || make_window_active( req->handle ))
2991 {
2992 reply->previous = queue->input->active;
2993 queue->input->active = get_user_full_handle( req->handle );
2994 }
2995 else set_error( STATUS_INVALID_HANDLE );
2996 }
2997 }
2998
2999
3000 /* set the current thread capture window */
3001 DECL_HANDLER(set_capture_window)
3002 {
3003 struct msg_queue *queue = get_current_queue();
3004
3005 reply->previous = reply->full_handle = 0;
3006 if (queue && check_queue_input_window( queue, req->handle ))
3007 {
3008 struct thread_input *input = queue->input;
3009
3010 /* if in menu mode, reject all requests to change focus, except if the menu bit is set */
3011 if (input->menu_owner && !(req->flags & CAPTURE_MENU))
3012 {
3013 set_error(STATUS_ACCESS_DENIED);
3014 return;
3015 }
3016 reply->previous = input->capture;
3017 input->capture = get_user_full_handle( req->handle );
3018 input->menu_owner = (req->flags & CAPTURE_MENU) ? input->capture : 0;
3019 input->move_size = (req->flags & CAPTURE_MOVESIZE) ? input->capture : 0;
3020 reply->full_handle = input->capture;
3021 }
3022 }
3023
3024
3025 /* Set the current thread caret window */
3026 DECL_HANDLER(set_caret_window)
3027 {
3028 struct msg_queue *queue = get_current_queue();
3029
3030 reply->previous = 0;
3031 if (queue && check_queue_input_window( queue, req->handle ))
3032 {
3033 struct thread_input *input = queue->input;
3034
3035 reply->previous = input->caret;
3036 reply->old_rect = input->caret_rect;
3037 reply->old_hide = input->caret_hide;
3038 reply->old_state = input->caret_state;
3039
3040 set_caret_window( input, get_user_full_handle(req->handle) );
3041 input->caret_rect.right = input->caret_rect.left + req->width;
3042 input->caret_rect.bottom = input->caret_rect.top + req->height;
3043 }
3044 }
3045
3046
3047 /* Set the current thread caret information */
3048 DECL_HANDLER(set_caret_info)
3049 {
3050 struct msg_queue *queue = get_current_queue();
3051 struct thread_input *input;
3052
3053 if (!queue) return;
3054 input = queue->input;
3055 reply->full_handle = input->caret;
3056 reply->old_rect = input->caret_rect;
3057 reply->old_hide = input->caret_hide;
3058 reply->old_state = input->caret_state;
3059
3060 if (req->handle && get_user_full_handle(req->handle) != input->caret)
3061 {
3062 set_error( STATUS_ACCESS_DENIED );
3063 return;
3064 }
3065 if (req->flags & SET_CARET_POS)
3066 {
3067 input->caret_rect.right += req->x - input->caret_rect.left;
3068 input->caret_rect.bottom += req->y - input->caret_rect.top;
3069 input->caret_rect.left = req->x;
3070 input->caret_rect.top = req->y;
3071 }
3072 if (req->flags & SET_CARET_HIDE)
3073 {
3074 input->caret_hide += req->hide;
3075 if (input->caret_hide < 0) input->caret_hide = 0;
3076 }
3077 if (req->flags & SET_CARET_STATE)
3078 {
3079 switch (req->state)
3080 {
3081 case CARET_STATE_OFF: input->caret_state = 0; break;
3082 case CARET_STATE_ON: input->caret_state = 1; break;
3083 case CARET_STATE_TOGGLE: input->caret_state = !input->caret_state; break;
3084 case CARET_STATE_ON_IF_MOVED:
3085 if (req->x != reply->old_rect.left || req->y != reply->old_rect.top) input->caret_state = 1;
3086 break;
3087 }
3088 }
3089 }
3090
3091
3092 /* get the time of the last input event */
3093 DECL_HANDLER(get_last_input_time)
3094 {
3095 reply->time = last_input_time;
3096 }
3097
3098 /* set/get the current cursor */
3099 DECL_HANDLER(set_cursor)
3100 {
3101 struct msg_queue *queue = get_current_queue();
3102 struct thread_input *input;
3103
3104 if (!queue) return;
3105 input = queue->input;
3106
3107 reply->prev_handle = input->cursor;
3108 reply->prev_count = input->cursor_count;
3109 reply->prev_x = input->desktop->cursor.x;
3110 reply->prev_y = input->desktop->cursor.y;
3111
3112 if (req->flags & SET_CURSOR_HANDLE)
3113 {
3114 if (req->handle && !get_user_object( req->handle, USER_CLIENT ))
3115 {
3116 set_win32_error( ERROR_INVALID_CURSOR_HANDLE );
3117 return;
3118 }
3119 input->cursor = req->handle;
3120 }
3121 if (req->flags & SET_CURSOR_COUNT)
3122 {
3123 queue->cursor_count += req->show_count;
3124 input->cursor_count += req->show_count;
3125 }
3126 if (req->flags & SET_CURSOR_POS)
3127 {
3128 set_cursor_pos( input->desktop, req->x, req->y );
3129 }
3130 if (req->flags & (SET_CURSOR_CLIP | SET_CURSOR_NOCLIP))
3131 {
3132 struct desktop *desktop = input->desktop;
3133
3134 /* only the desktop owner can set the message */
3135 if (req->clip_msg && get_top_window_owner(desktop) == current->process)
3136 desktop->cursor.clip_msg = req->clip_msg;
3137
3138 set_clip_rectangle( desktop, (req->flags & SET_CURSOR_NOCLIP) ? NULL : &req->clip, 0 );
3139 }
3140
3141 reply->new_x = input->desktop->cursor.x;
3142 reply->new_y = input->desktop->cursor.y;
3143 reply->new_clip = input->desktop->cursor.clip;
3144 reply->last_change = input->desktop->cursor.last_change;
3145 }
3146
3147 DECL_HANDLER(update_rawinput_devices)
3148 {
3149 const struct rawinput_device *devices = get_req_data();
3150 unsigned int device_count = get_req_data_size() / sizeof (*devices);
3151 const struct rawinput_device_entry *e;
3152 unsigned int i;
3153
3154 for (i = 0; i < device_count; ++i)
3155 {
3156 update_rawinput_device(&devices[i]);
3157 }
3158
3159 e = find_rawinput_device( 1, 2 );
3160 current->process->rawinput_mouse = e ? &e->device : NULL;
3161 e = find_rawinput_device( 1, 6 );
3162 current->process->rawinput_kbd = e ? &e->device : NULL;
3163 }
Windows API implementation