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crypt32: Validate parameters better in CryptDecodeObject.
[wine/wine64.git] / server / queue.c
blob3220fcb6619e36a5b3ea50bc782dacf919e31b3b
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
29 #include "ntstatus.h"
30 #define WIN32_NO_STATUS
31 #include "windef.h"
32 #include "winbase.h"
33 #include "wingdi.h"
34 #include "winuser.h"
35 #include "winternl.h"
36
37 #include "handle.h"
38 #include "file.h"
39 #include "thread.h"
40 #include "process.h"
41 #include "request.h"
42 #include "user.h"
43
44 #define WM_NCMOUSEFIRST WM_NCMOUSEMOVE
45 #define WM_NCMOUSELAST (WM_NCMOUSEFIRST+(WM_MOUSELAST-WM_MOUSEFIRST))
46
47 enum message_kind { SEND_MESSAGE, POST_MESSAGE };
48 #define NB_MSG_KINDS (POST_MESSAGE+1)
49
50
51 struct message_result
52 {
53 struct list sender_entry; /* entry in sender list */
54 struct message *msg; /* message the result is for */
55 struct message_result *recv_next; /* next in receiver list */
56 struct msg_queue *sender; /* sender queue */
57 struct msg_queue *receiver; /* receiver queue */
58 int replied; /* has it been replied to? */
59 unsigned int result; /* reply result */
60 unsigned int error; /* error code to pass back to sender */
61 struct message *callback_msg; /* message to queue for callback */
62 void *data; /* message reply data */
63 unsigned int data_size; /* size of message reply data */
64 struct timeout_user *timeout; /* result timeout */
65 };
66
67 struct message
68 {
69 struct list entry; /* entry in message list */
70 enum message_type type; /* message type */
71 user_handle_t win; /* window handle */
72 unsigned int msg; /* message code */
73 unsigned long wparam; /* parameters */
74 unsigned long lparam; /* parameters */
75 unsigned long info; /* extra info */
76 int x; /* x position */
77 int y; /* y position */
78 unsigned int time; /* message time */
79 void *data; /* message data for sent messages */
80 unsigned int data_size; /* size of message data */
81 unsigned int unique_id; /* unique id for nested hw message waits */
82 struct message_result *result; /* result in sender queue */
83 };
84
85 struct timer
86 {
87 struct list entry; /* entry in timer list */
88 timeout_t when; /* next expiration */
89 unsigned int rate; /* timer rate in ms */
90 user_handle_t win; /* window handle */
91 unsigned int msg; /* message to post */
92 unsigned long id; /* timer id */
93 unsigned long lparam; /* lparam for message */
94 };
95
96 struct thread_input
97 {
98 struct object obj; /* object header */
99 struct desktop *desktop; /* desktop that this thread input belongs to */
100 user_handle_t focus; /* focus window */
101 user_handle_t capture; /* capture window */
102 user_handle_t active; /* active window */
103 user_handle_t menu_owner; /* current menu owner window */
104 user_handle_t move_size; /* current moving/resizing window */
105 user_handle_t caret; /* caret window */
106 rectangle_t caret_rect; /* caret rectangle */
107 int caret_hide; /* caret hide count */
108 int caret_state; /* caret on/off state */
109 struct list msg_list; /* list of hardware messages */
110 unsigned char keystate[256]; /* state of each key */
111 };
112
113 struct msg_queue
114 {
115 struct object obj; /* object header */
116 struct fd *fd; /* optional file descriptor to poll */
117 unsigned int wake_bits; /* wakeup bits */
118 unsigned int wake_mask; /* wakeup mask */
119 unsigned int changed_bits; /* changed wakeup bits */
120 unsigned int changed_mask; /* changed wakeup mask */
121 int paint_count; /* pending paint messages count */
122 int quit_message; /* is there a pending quit message? */
123 int exit_code; /* exit code of pending quit message */
124 struct list msg_list[NB_MSG_KINDS]; /* lists of messages */
125 struct list send_result; /* stack of sent messages waiting for result */
126 struct list callback_result; /* list of callback messages waiting for result */
127 struct message_result *recv_result; /* stack of received messages waiting for result */
128 struct list pending_timers; /* list of pending timers */
129 struct list expired_timers; /* list of expired timers */
130 unsigned long next_timer_id; /* id for the next timer with a 0 window */
131 struct timeout_user *timeout; /* timeout for next timer to expire */
132 struct thread_input *input; /* thread input descriptor */
133 struct hook_table *hooks; /* hook table */
134 timeout_t last_get_msg; /* time of last get message call */
135 };
136
137 static void msg_queue_dump( struct object *obj, int verbose );
138 static int msg_queue_add_queue( struct object *obj, struct wait_queue_entry *entry );
139 static void msg_queue_remove_queue( struct object *obj, struct wait_queue_entry *entry );
140 static int msg_queue_signaled( struct object *obj, struct thread *thread );
141 static int msg_queue_satisfied( struct object *obj, struct thread *thread );
142 static void msg_queue_destroy( struct object *obj );
143 static void msg_queue_poll_event( struct fd *fd, int event );
144 static void thread_input_dump( struct object *obj, int verbose );
145 static void thread_input_destroy( struct object *obj );
146 static void timer_callback( void *private );
147
148 static const struct object_ops msg_queue_ops =
149 {
150 sizeof(struct msg_queue), /* size */
151 msg_queue_dump, /* dump */
152 msg_queue_add_queue, /* add_queue */
153 msg_queue_remove_queue, /* remove_queue */
154 msg_queue_signaled, /* signaled */
155 msg_queue_satisfied, /* satisfied */
156 no_signal, /* signal */
157 no_get_fd, /* get_fd */
158 no_map_access, /* map_access */
159 no_lookup_name, /* lookup_name */
160 no_open_file, /* open_file */
161 no_close_handle, /* close_handle */
162 msg_queue_destroy /* destroy */
163 };
164
165 static const struct fd_ops msg_queue_fd_ops =
166 {
167 NULL, /* get_poll_events */
168 msg_queue_poll_event, /* poll_event */
169 NULL, /* flush */
170 NULL, /* get_fd_type */
171 NULL, /* ioctl */
172 NULL, /* queue_async */
173 NULL, /* reselect_async */
174 NULL /* cancel async */
175 };
176
177
178 static const struct object_ops thread_input_ops =
179 {
180 sizeof(struct thread_input), /* size */
181 thread_input_dump, /* dump */
182 no_add_queue, /* add_queue */
183 NULL, /* remove_queue */
184 NULL, /* signaled */
185 NULL, /* satisfied */
186 no_signal, /* signal */
187 no_get_fd, /* get_fd */
188 no_map_access, /* map_access */
189 no_lookup_name, /* lookup_name */
190 no_open_file, /* open_file */
191 no_close_handle, /* close_handle */
192 thread_input_destroy /* destroy */
193 };
194
195 /* pointer to input structure of foreground thread */
196 static struct thread_input *foreground_input;
197 static unsigned int last_input_time;
198
199 static void free_message( struct message *msg );
200
201 /* set the caret window in a given thread input */
202 static void set_caret_window( struct thread_input *input, user_handle_t win )
203 {
204 if (!win || win != input->caret)
205 {
206 input->caret_rect.left = 0;
207 input->caret_rect.top = 0;
208 input->caret_rect.right = 0;
209 input->caret_rect.bottom = 0;
210 }
211 input->caret = win;
212 input->caret_hide = 1;
213 input->caret_state = 0;
214 }
215
216 /* create a thread input object */
217 static struct thread_input *create_thread_input( struct thread *thread )
218 {
219 struct thread_input *input;
220
221 if ((input = alloc_object( &thread_input_ops )))
222 {
223 input->focus = 0;
224 input->capture = 0;
225 input->active = 0;
226 input->menu_owner = 0;
227 input->move_size = 0;
228 list_init( &input->msg_list );
229 set_caret_window( input, 0 );
230 memset( input->keystate, 0, sizeof(input->keystate) );
231
232 if (!(input->desktop = get_thread_desktop( thread, 0 /* FIXME: access rights */ )))
233 {
234 release_object( input );
235 return NULL;
236 }
237 }
238 return input;
239 }
240
241 /* release the thread input data of a given thread */
242 static inline void release_thread_input( struct thread *thread )
243 {
244 struct thread_input *input = thread->queue->input;
245
246 if (!input) return;
247 release_object( input );
248 thread->queue->input = NULL;
249 }
250
251 /* create a message queue object */
252 static struct msg_queue *create_msg_queue( struct thread *thread, struct thread_input *input )
253 {
254 struct msg_queue *queue;
255 int i;
256
257 if (!input && !(input = create_thread_input( thread ))) return NULL;
258 if ((queue = alloc_object( &msg_queue_ops )))
259 {
260 queue->fd = NULL;
261 queue->wake_bits = 0;
262 queue->wake_mask = 0;
263 queue->changed_bits = 0;
264 queue->changed_mask = 0;
265 queue->paint_count = 0;
266 queue->quit_message = 0;
267 queue->recv_result = NULL;
268 queue->next_timer_id = 1;
269 queue->timeout = NULL;
270 queue->input = (struct thread_input *)grab_object( input );
271 queue->hooks = NULL;
272 queue->last_get_msg = current_time;
273 list_init( &queue->send_result );
274 list_init( &queue->callback_result );
275 list_init( &queue->pending_timers );
276 list_init( &queue->expired_timers );
277 for (i = 0; i < NB_MSG_KINDS; i++) list_init( &queue->msg_list[i] );
278
279 thread->queue = queue;
280 if (!thread->process->queue)
281 thread->process->queue = (struct msg_queue *)grab_object( queue );
282 }
283 release_object( input );
284 return queue;
285 }
286
287 /* free the message queue of a thread at thread exit */
288 void free_msg_queue( struct thread *thread )
289 {
290 struct process *process = thread->process;
291
292 remove_thread_hooks( thread );
293 if (!thread->queue) return;
294 if (process->queue == thread->queue) /* is it the process main queue? */
295 {
296 release_object( process->queue );
297 process->queue = NULL;
298 if (process->idle_event)
299 {
300 set_event( process->idle_event );
301 release_object( process->idle_event );
302 process->idle_event = NULL;
303 }
304 }
305 release_object( thread->queue );
306 thread->queue = NULL;
307 }
308
309 /* get the hook table for a given thread */
310 struct hook_table *get_queue_hooks( struct thread *thread )
311 {
312 if (!thread->queue) return NULL;
313 return thread->queue->hooks;
314 }
315
316 /* set the hook table for a given thread, allocating the queue if needed */
317 void set_queue_hooks( struct thread *thread, struct hook_table *hooks )
318 {
319 struct msg_queue *queue = thread->queue;
320 if (!queue && !(queue = create_msg_queue( thread, NULL ))) return;
321 if (queue->hooks) release_object( queue->hooks );
322 queue->hooks = hooks;
323 }
324
325 /* check the queue status */
326 static inline int is_signaled( struct msg_queue *queue )
327 {
328 return ((queue->wake_bits & queue->wake_mask) || (queue->changed_bits & queue->changed_mask));
329 }
330
331 /* set some queue bits */
332 static inline void set_queue_bits( struct msg_queue *queue, unsigned int bits )
333 {
334 queue->wake_bits |= bits;
335 queue->changed_bits |= bits;
336 if (is_signaled( queue )) wake_up( &queue->obj, 0 );
337 }
338
339 /* clear some queue bits */
340 static inline void clear_queue_bits( struct msg_queue *queue, unsigned int bits )
341 {
342 queue->wake_bits &= ~bits;
343 queue->changed_bits &= ~bits;
344 }
345
346 /* check whether msg is a keyboard message */
347 static inline int is_keyboard_msg( struct message *msg )
348 {
349 return (msg->msg >= WM_KEYFIRST && msg->msg <= WM_KEYLAST);
350 }
351
352 /* check if message is matched by the filter */
353 static inline int check_msg_filter( unsigned int msg, unsigned int first, unsigned int last )
354 {
355 return (msg >= first && msg <= last);
356 }
357
358 /* check whether a message filter contains at least one potential hardware message */
359 static inline int filter_contains_hw_range( unsigned int first, unsigned int last )
360 {
361 /* hardware message ranges are (in numerical order):
362 * WM_NCMOUSEFIRST .. WM_NCMOUSELAST
363 * WM_KEYFIRST .. WM_KEYLAST
364 * WM_MOUSEFIRST .. WM_MOUSELAST
365 */
366 if (last < WM_NCMOUSEFIRST) return 0;
367 if (first > WM_NCMOUSELAST && last < WM_KEYFIRST) return 0;
368 if (first > WM_KEYLAST && last < WM_MOUSEFIRST) return 0;
369 if (first > WM_MOUSELAST) return 0;
370 return 1;
371 }
372
373 /* get the QS_* bit corresponding to a given hardware message */
374 static inline int get_hardware_msg_bit( struct message *msg )
375 {
376 if (msg->msg == WM_MOUSEMOVE || msg->msg == WM_NCMOUSEMOVE) return QS_MOUSEMOVE;
377 if (is_keyboard_msg( msg )) return QS_KEY;
378 return QS_MOUSEBUTTON;
379 }
380
381 /* get the current thread queue, creating it if needed */
382 static inline struct msg_queue *get_current_queue(void)
383 {
384 struct msg_queue *queue = current->queue;
385 if (!queue) queue = create_msg_queue( current, NULL );
386 return queue;
387 }
388
389 /* get a (pseudo-)unique id to tag hardware messages */
390 static inline unsigned int get_unique_id(void)
391 {
392 static unsigned int id;
393 if (!++id) id = 1; /* avoid an id of 0 */
394 return id;
395 }
396
397 /* try to merge a message with the last in the list; return 1 if successful */
398 static int merge_message( struct thread_input *input, const struct message *msg )
399 {
400 struct message *prev;
401 struct list *ptr = list_tail( &input->msg_list );
402
403 if (!ptr) return 0;
404 prev = LIST_ENTRY( ptr, struct message, entry );
405 if (prev->unique_id) return 0;
406 if (prev->result) return 0;
407 if (prev->win != msg->win) return 0;
408 if (prev->msg != msg->msg) return 0;
409 if (prev->type != msg->type) return 0;
410 /* now we can merge it */
411 prev->wparam = msg->wparam;
412 prev->lparam = msg->lparam;
413 prev->x = msg->x;
414 prev->y = msg->y;
415 prev->time = msg->time;
416 prev->info = msg->info;
417 return 1;
418 }
419
420 /* free a result structure */
421 static void free_result( struct message_result *result )
422 {
423 if (result->timeout) remove_timeout_user( result->timeout );
424 free( result->data );
425 if (result->callback_msg) free_message( result->callback_msg );
426 free( result );
427 }
428
429 /* remove the result from the sender list it is on */
430 static inline void remove_result_from_sender( struct message_result *result )
431 {
432 assert( result->sender );
433
434 list_remove( &result->sender_entry );
435 result->sender = NULL;
436 if (!result->receiver) free_result( result );
437 }
438
439 /* store the message result in the appropriate structure */
440 static void store_message_result( struct message_result *res, unsigned int result,
441 unsigned int error )
442 {
443 res->result = result;
444 res->error = error;
445 res->replied = 1;
446 if (res->timeout)
447 {
448 remove_timeout_user( res->timeout );
449 res->timeout = NULL;
450 }
451 if (res->sender)
452 {
453 if (res->callback_msg)
454 {
455 /* queue the callback message in the sender queue */
456 struct callback_msg_data *data = res->callback_msg->data;
457 data->result = result;
458 list_add_tail( &res->sender->msg_list[SEND_MESSAGE], &res->callback_msg->entry );
459 set_queue_bits( res->sender, QS_SENDMESSAGE );
460 res->callback_msg = NULL;
461 remove_result_from_sender( res );
462 }
463 else
464 {
465 /* wake sender queue if waiting on this result */
466 if (list_head(&res->sender->send_result) == &res->sender_entry)
467 set_queue_bits( res->sender, QS_SMRESULT );
468 }
469 }
470
471 }
472
473 /* free a message when deleting a queue or window */
474 static void free_message( struct message *msg )
475 {
476 struct message_result *result = msg->result;
477 if (result)
478 {
479 result->msg = NULL;
480 if (result->sender)
481 {
482 result->receiver = NULL;
483 store_message_result( result, 0, STATUS_ACCESS_DENIED /*FIXME*/ );
484 }
485 else free_result( result );
486 }
487 free( msg->data );
488 free( msg );
489 }
490
491 /* remove (and free) a message from a message list */
492 static void remove_queue_message( struct msg_queue *queue, struct message *msg,
493 enum message_kind kind )
494 {
495 list_remove( &msg->entry );
496 switch(kind)
497 {
498 case SEND_MESSAGE:
499 if (list_empty( &queue->msg_list[kind] )) clear_queue_bits( queue, QS_SENDMESSAGE );
500 break;
501 case POST_MESSAGE:
502 if (list_empty( &queue->msg_list[kind] ) && !queue->quit_message)
503 clear_queue_bits( queue, QS_POSTMESSAGE|QS_ALLPOSTMESSAGE );
504 break;
505 }
506 free_message( msg );
507 }
508
509 /* message timed out without getting a reply */
510 static void result_timeout( void *private )
511 {
512 struct message_result *result = private;
513
514 assert( !result->replied );
515
516 result->timeout = NULL;
517
518 if (result->msg) /* not received yet */
519 {
520 struct message *msg = result->msg;
521
522 result->msg = NULL;
523 msg->result = NULL;
524 remove_queue_message( result->receiver, msg, SEND_MESSAGE );
525 result->receiver = NULL;
526 if (!result->sender)
527 {
528 free_result( result );
529 return;
530 }
531 }
532
533 store_message_result( result, 0, STATUS_TIMEOUT );
534 }
535
536 /* allocate and fill a message result structure */
537 static struct message_result *alloc_message_result( struct msg_queue *send_queue,
538 struct msg_queue *recv_queue,
539 struct message *msg, timeout_t timeout )
540 {
541 struct message_result *result = mem_alloc( sizeof(*result) );
542 if (result)
543 {
544 result->msg = msg;
545 result->sender = send_queue;
546 result->receiver = recv_queue;
547 result->replied = 0;
548 result->data = NULL;
549 result->data_size = 0;
550 result->timeout = NULL;
551
552 if (msg->type == MSG_CALLBACK)
553 {
554 struct message *callback_msg = mem_alloc( sizeof(*callback_msg) );
555
556 if (!callback_msg)
557 {
558 free( result );
559 return NULL;
560 }
561 callback_msg->type = MSG_CALLBACK_RESULT;
562 callback_msg->win = msg->win;
563 callback_msg->msg = msg->msg;
564 callback_msg->wparam = 0;
565 callback_msg->lparam = 0;
566 callback_msg->time = get_tick_count();
567 callback_msg->x = 0;
568 callback_msg->y = 0;
569 callback_msg->info = 0;
570 callback_msg->result = NULL;
571 /* steal the data from the original message */
572 callback_msg->data = msg->data;
573 callback_msg->data_size = msg->data_size;
574 msg->data = NULL;
575 msg->data_size = 0;
576
577 result->callback_msg = callback_msg;
578 list_add_head( &send_queue->callback_result, &result->sender_entry );
579 }
580 else
581 {
582 result->callback_msg = NULL;
583 list_add_head( &send_queue->send_result, &result->sender_entry );
584 }
585
586 if (timeout != TIMEOUT_INFINITE)
587 result->timeout = add_timeout_user( timeout, result_timeout, result );
588 }
589 return result;
590 }
591
592 /* receive a message, removing it from the sent queue */
593 static void receive_message( struct msg_queue *queue, struct message *msg,
594 struct get_message_reply *reply )
595 {
596 struct message_result *result = msg->result;
597
598 reply->total = msg->data_size;
599 if (msg->data_size > get_reply_max_size())
600 {
601 set_error( STATUS_BUFFER_OVERFLOW );
602 return;
603 }
604 reply->type = msg->type;
605 reply->win = msg->win;
606 reply->msg = msg->msg;
607 reply->wparam = msg->wparam;
608 reply->lparam = msg->lparam;
609 reply->x = msg->x;
610 reply->y = msg->y;
611 reply->time = msg->time;
612 reply->info = msg->info;
613
614 if (msg->data) set_reply_data_ptr( msg->data, msg->data_size );
615
616 list_remove( &msg->entry );
617 /* put the result on the receiver result stack */
618 if (result)
619 {
620 result->msg = NULL;
621 result->recv_next = queue->recv_result;
622 queue->recv_result = result;
623 }
624 free( msg );
625 if (list_empty( &queue->msg_list[SEND_MESSAGE] )) clear_queue_bits( queue, QS_SENDMESSAGE );
626 }
627
628 /* set the result of the current received message */
629 static void reply_message( struct msg_queue *queue, unsigned int result,
630 unsigned int error, int remove, const void *data, data_size_t len )
631 {
632 struct message_result *res = queue->recv_result;
633
634 if (remove)
635 {
636 queue->recv_result = res->recv_next;
637 res->receiver = NULL;
638 if (!res->sender) /* no one waiting for it */
639 {
640 free_result( res );
641 return;
642 }
643 }
644 if (!res->replied)
645 {
646 if (len && (res->data = memdup( data, len ))) res->data_size = len;
647 store_message_result( res, result, error );
648 }
649 }
650
651 /* retrieve a posted message */
652 static int get_posted_message( struct msg_queue *queue, user_handle_t win,
653 unsigned int first, unsigned int last, unsigned int flags,
654 struct get_message_reply *reply )
655 {
656 struct message *msg;
657
658 /* check against the filters */
659 LIST_FOR_EACH_ENTRY( msg, &queue->msg_list[POST_MESSAGE], struct message, entry )
660 {
661 if (win && msg->win && msg->win != win && !is_child_window( win, msg->win )) continue;
662 if (!check_msg_filter( msg->msg, first, last )) continue;
663 goto found; /* found one */
664 }
665 return 0;
666
667 /* return it to the app */
668 found:
669 reply->total = msg->data_size;
670 if (msg->data_size > get_reply_max_size())
671 {
672 set_error( STATUS_BUFFER_OVERFLOW );
673 return 1;
674 }
675 reply->type = msg->type;
676 reply->win = msg->win;
677 reply->msg = msg->msg;
678 reply->wparam = msg->wparam;
679 reply->lparam = msg->lparam;
680 reply->x = msg->x;
681 reply->y = msg->y;
682 reply->time = msg->time;
683 reply->info = msg->info;
684
685 if (flags & PM_REMOVE)
686 {
687 if (msg->data)
688 {
689 set_reply_data_ptr( msg->data, msg->data_size );
690 msg->data = NULL;
691 msg->data_size = 0;
692 }
693 remove_queue_message( queue, msg, POST_MESSAGE );
694 }
695 else if (msg->data) set_reply_data( msg->data, msg->data_size );
696
697 return 1;
698 }
699
700 static int get_quit_message( struct msg_queue *queue, unsigned int flags,
701 struct get_message_reply *reply )
702 {
703 if (queue->quit_message)
704 {
705 reply->total = 0;
706 reply->type = MSG_POSTED;
707 reply->win = NULL;
708 reply->msg = WM_QUIT;
709 reply->wparam = queue->exit_code;
710 reply->lparam = 0;
711 reply->x = 0;
712 reply->y = 0;
713 reply->time = get_tick_count();
714 reply->info = 0;
715
716 if (flags & PM_REMOVE)
717 {
718 queue->quit_message = 0;
719 if (list_empty( &queue->msg_list[POST_MESSAGE] ))
720 clear_queue_bits( queue, QS_POSTMESSAGE|QS_ALLPOSTMESSAGE );
721 }
722 return 1;
723 }
724 else
725 return 0;
726 }
727
728 /* empty a message list and free all the messages */
729 static void empty_msg_list( struct list *list )
730 {
731 struct list *ptr;
732
733 while ((ptr = list_head( list )) != NULL)
734 {
735 struct message *msg = LIST_ENTRY( ptr, struct message, entry );
736 list_remove( &msg->entry );
737 free_message( msg );
738 }
739 }
740
741 /* cleanup all pending results when deleting a queue */
742 static void cleanup_results( struct msg_queue *queue )
743 {
744 struct list *entry;
745
746 while ((entry = list_head( &queue->send_result )) != NULL)
747 {
748 remove_result_from_sender( LIST_ENTRY( entry, struct message_result, sender_entry ) );
749 }
750
751 while ((entry = list_head( &queue->callback_result )) != NULL)
752 {
753 remove_result_from_sender( LIST_ENTRY( entry, struct message_result, sender_entry ) );
754 }
755
756 while (queue->recv_result)
757 reply_message( queue, 0, STATUS_ACCESS_DENIED /*FIXME*/, 1, NULL, 0 );
758 }
759
760 /* check if the thread owning the queue is hung (not checking for messages) */
761 static int is_queue_hung( struct msg_queue *queue )
762 {
763 struct wait_queue_entry *entry;
764
765 if (current_time - queue->last_get_msg <= 5 * TICKS_PER_SEC)
766 return 0; /* less than 5 seconds since last get message -> not hung */
767
768 LIST_FOR_EACH_ENTRY( entry, &queue->obj.wait_queue, struct wait_queue_entry, entry )
769 {
770 if (entry->thread->queue == queue)
771 return 0; /* thread is waiting on queue -> not hung */
772 }
773 return 1;
774 }
775
776 static int msg_queue_add_queue( struct object *obj, struct wait_queue_entry *entry )
777 {
778 struct msg_queue *queue = (struct msg_queue *)obj;
779 struct process *process = entry->thread->process;
780
781 /* a thread can only wait on its own queue */
782 if (entry->thread->queue != queue)
783 {
784 set_error( STATUS_ACCESS_DENIED );
785 return 0;
786 }
787 /* if waiting on the main process queue, set the idle event */
788 if (process->queue == queue)
789 {
790 if (process->idle_event) set_event( process->idle_event );
791 }
792 if (queue->fd && list_empty( &obj->wait_queue )) /* first on the queue */
793 set_fd_events( queue->fd, POLLIN );
794 add_queue( obj, entry );
795 return 1;
796 }
797
798 static void msg_queue_remove_queue(struct object *obj, struct wait_queue_entry *entry )
799 {
800 struct msg_queue *queue = (struct msg_queue *)obj;
801 struct process *process = entry->thread->process;
802
803 remove_queue( obj, entry );
804 if (queue->fd && list_empty( &obj->wait_queue )) /* last on the queue is gone */
805 set_fd_events( queue->fd, 0 );
806
807 assert( entry->thread->queue == queue );
808
809 /* if waiting on the main process queue, reset the idle event */
810 if (process->queue == queue)
811 {
812 if (process->idle_event) reset_event( process->idle_event );
813 }
814 }
815
816 static void msg_queue_dump( struct object *obj, int verbose )
817 {
818 struct msg_queue *queue = (struct msg_queue *)obj;
819 fprintf( stderr, "Msg queue bits=%x mask=%x\n",
820 queue->wake_bits, queue->wake_mask );
821 }
822
823 static int msg_queue_signaled( struct object *obj, struct thread *thread )
824 {
825 struct msg_queue *queue = (struct msg_queue *)obj;
826 int ret = 0;
827
828 if (queue->fd)
829 {
830 if ((ret = check_fd_events( queue->fd, POLLIN )))
831 /* stop waiting on select() if we are signaled */
832 set_fd_events( queue->fd, 0 );
833 else if (!list_empty( &obj->wait_queue ))
834 /* restart waiting on poll() if we are no longer signaled */
835 set_fd_events( queue->fd, POLLIN );
836 }
837 return ret || is_signaled( queue );
838 }
839
840 static int msg_queue_satisfied( struct object *obj, struct thread *thread )
841 {
842 struct msg_queue *queue = (struct msg_queue *)obj;
843 queue->wake_mask = 0;
844 queue->changed_mask = 0;
845 return 0; /* Not abandoned */
846 }
847
848 static void msg_queue_destroy( struct object *obj )
849 {
850 struct msg_queue *queue = (struct msg_queue *)obj;
851 struct list *ptr;
852 int i;
853
854 cleanup_results( queue );
855 for (i = 0; i < NB_MSG_KINDS; i++) empty_msg_list( &queue->msg_list[i] );
856
857 while ((ptr = list_head( &queue->pending_timers )))
858 {
859 struct timer *timer = LIST_ENTRY( ptr, struct timer, entry );
860 list_remove( &timer->entry );
861 free( timer );
862 }
863 while ((ptr = list_head( &queue->expired_timers )))
864 {
865 struct timer *timer = LIST_ENTRY( ptr, struct timer, entry );
866 list_remove( &timer->entry );
867 free( timer );
868 }
869 if (queue->timeout) remove_timeout_user( queue->timeout );
870 if (queue->input) release_object( queue->input );
871 if (queue->hooks) release_object( queue->hooks );
872 if (queue->fd) release_object( queue->fd );
873 }
874
875 static void msg_queue_poll_event( struct fd *fd, int event )
876 {
877 struct msg_queue *queue = get_fd_user( fd );
878 assert( queue->obj.ops == &msg_queue_ops );
879
880 if (event & (POLLERR | POLLHUP)) set_fd_events( fd, -1 );
881 wake_up( &queue->obj, 0 );
882 }
883
884 static void thread_input_dump( struct object *obj, int verbose )
885 {
886 struct thread_input *input = (struct thread_input *)obj;
887 fprintf( stderr, "Thread input focus=%p capture=%p active=%p\n",
888 input->focus, input->capture, input->active );
889 }
890
891 static void thread_input_destroy( struct object *obj )
892 {
893 struct thread_input *input = (struct thread_input *)obj;
894
895 if (foreground_input == input) foreground_input = NULL;
896 empty_msg_list( &input->msg_list );
897 if (input->desktop) release_object( input->desktop );
898 }
899
900 /* fix the thread input data when a window is destroyed */
901 static inline void thread_input_cleanup_window( struct msg_queue *queue, user_handle_t window )
902 {
903 struct thread_input *input = queue->input;
904
905 if (window == input->focus) input->focus = 0;
906 if (window == input->capture) input->capture = 0;
907 if (window == input->active) input->active = 0;
908 if (window == input->menu_owner) input->menu_owner = 0;
909 if (window == input->move_size) input->move_size = 0;
910 if (window == input->caret) set_caret_window( input, 0 );
911 }
912
913 /* check if the specified window can be set in the input data of a given queue */
914 static int check_queue_input_window( struct msg_queue *queue, user_handle_t window )
915 {
916 struct thread *thread;
917 int ret = 0;
918
919 if (!window) return 1; /* we can always clear the data */
920
921 if ((thread = get_window_thread( window )))
922 {
923 ret = (queue->input == thread->queue->input);
924 if (!ret) set_error( STATUS_ACCESS_DENIED );
925 release_object( thread );
926 }
927 else set_error( STATUS_INVALID_HANDLE );
928
929 return ret;
930 }
931
932 /* make sure the specified thread has a queue */
933 int init_thread_queue( struct thread *thread )
934 {
935 if (thread->queue) return 1;
936 return (create_msg_queue( thread, NULL ) != NULL);
937 }
938
939 /* attach two thread input data structures */
940 int attach_thread_input( struct thread *thread_from, struct thread *thread_to )
941 {
942 struct desktop *desktop;
943 struct thread_input *input;
944
945 if (!thread_to->queue && !(thread_to->queue = create_msg_queue( thread_to, NULL ))) return 0;
946 if (!(desktop = get_thread_desktop( thread_from, 0 ))) return 0;
947 input = (struct thread_input *)grab_object( thread_to->queue->input );
948 if (input->desktop != desktop)
949 {
950 set_error( STATUS_ACCESS_DENIED );
951 release_object( input );
952 release_object( desktop );
953 return 0;
954 }
955 release_object( desktop );
956
957 if (thread_from->queue)
958 {
959 release_thread_input( thread_from );
960 thread_from->queue->input = input;
961 }
962 else
963 {
964 if (!(thread_from->queue = create_msg_queue( thread_from, input ))) return 0;
965 }
966 memset( input->keystate, 0, sizeof(input->keystate) );
967 return 1;
968 }
969
970 /* detach two thread input data structures */
971 void detach_thread_input( struct thread *thread_from )
972 {
973 struct thread_input *input;
974
975 if ((input = create_thread_input( thread_from )))
976 {
977 release_thread_input( thread_from );
978 thread_from->queue->input = input;
979 }
980 }
981
982
983 /* set the next timer to expire */
984 static void set_next_timer( struct msg_queue *queue )
985 {
986 struct list *ptr;
987
988 if (queue->timeout)
989 {
990 remove_timeout_user( queue->timeout );
991 queue->timeout = NULL;
992 }
993 if ((ptr = list_head( &queue->pending_timers )))
994 {
995 struct timer *timer = LIST_ENTRY( ptr, struct timer, entry );
996 queue->timeout = add_timeout_user( timer->when, timer_callback, queue );
997 }
998 /* set/clear QS_TIMER bit */
999 if (list_empty( &queue->expired_timers ))
1000 clear_queue_bits( queue, QS_TIMER );
1001 else
1002 set_queue_bits( queue, QS_TIMER );
1003 }
1004
1005 /* find a timer from its window and id */
1006 static struct timer *find_timer( struct msg_queue *queue, user_handle_t win,
1007 unsigned int msg, unsigned long id )
1008 {
1009 struct list *ptr;
1010
1011 /* we need to search both lists */
1012
1013 LIST_FOR_EACH( ptr, &queue->pending_timers )
1014 {
1015 struct timer *timer = LIST_ENTRY( ptr, struct timer, entry );
1016 if (timer->win == win && timer->msg == msg && timer->id == id) return timer;
1017 }
1018 LIST_FOR_EACH( ptr, &queue->expired_timers )
1019 {
1020 struct timer *timer = LIST_ENTRY( ptr, struct timer, entry );
1021 if (timer->win == win && timer->msg == msg && timer->id == id) return timer;
1022 }
1023 return NULL;
1024 }
1025
1026 /* callback for the next timer expiration */
1027 static void timer_callback( void *private )
1028 {
1029 struct msg_queue *queue = private;
1030 struct list *ptr;
1031
1032 queue->timeout = NULL;
1033 /* move on to the next timer */
1034 ptr = list_head( &queue->pending_timers );
1035 list_remove( ptr );
1036 list_add_tail( &queue->expired_timers, ptr );
1037 set_next_timer( queue );
1038 }
1039
1040 /* link a timer at its rightful place in the queue list */
1041 static void link_timer( struct msg_queue *queue, struct timer *timer )
1042 {
1043 struct list *ptr;
1044
1045 for (ptr = queue->pending_timers.next; ptr != &queue->pending_timers; ptr = ptr->next)
1046 {
1047 struct timer *t = LIST_ENTRY( ptr, struct timer, entry );
1048 if (t->when >= timer->when) break;
1049 }
1050 list_add_before( ptr, &timer->entry );
1051 }
1052
1053 /* remove a timer from the queue timer list and free it */
1054 static void free_timer( struct msg_queue *queue, struct timer *timer )
1055 {
1056 list_remove( &timer->entry );
1057 free( timer );
1058 set_next_timer( queue );
1059 }
1060
1061 /* restart an expired timer */
1062 static void restart_timer( struct msg_queue *queue, struct timer *timer )
1063 {
1064 list_remove( &timer->entry );
1065 while (timer->when <= current_time) timer->when += (timeout_t)timer->rate * 10000;
1066 link_timer( queue, timer );
1067 set_next_timer( queue );
1068 }
1069
1070 /* find an expired timer matching the filtering parameters */
1071 static struct timer *find_expired_timer( struct msg_queue *queue, user_handle_t win,
1072 unsigned int get_first, unsigned int get_last,
1073 int remove )
1074 {
1075 struct list *ptr;
1076
1077 LIST_FOR_EACH( ptr, &queue->expired_timers )
1078 {
1079 struct timer *timer = LIST_ENTRY( ptr, struct timer, entry );
1080 if (win && timer->win != win) continue;
1081 if (check_msg_filter( timer->msg, get_first, get_last ))
1082 {
1083 if (remove) restart_timer( queue, timer );
1084 return timer;
1085 }
1086 }
1087 return NULL;
1088 }
1089
1090 /* add a timer */
1091 static struct timer *set_timer( struct msg_queue *queue, unsigned int rate )
1092 {
1093 struct timer *timer = mem_alloc( sizeof(*timer) );
1094 if (timer)
1095 {
1096 timer->rate = max( rate, 1 );
1097 timer->when = current_time + (timeout_t)timer->rate * 10000;
1098 link_timer( queue, timer );
1099 /* check if we replaced the next timer */
1100 if (list_head( &queue->pending_timers ) == &timer->entry) set_next_timer( queue );
1101 }
1102 return timer;
1103 }
1104
1105 /* change the input key state for a given key */
1106 static void set_input_key_state( struct thread_input *input, unsigned char key, int down )
1107 {
1108 if (down)
1109 {
1110 if (!(input->keystate[key] & 0x80)) input->keystate[key] ^= 0x01;
1111 input->keystate[key] |= 0x80;
1112 }
1113 else input->keystate[key] &= ~0x80;
1114 }
1115
1116 /* update the input key state for a keyboard message */
1117 static void update_input_key_state( struct thread_input *input, const struct message *msg )
1118 {
1119 unsigned char key;
1120 int down = 0, extended;
1121
1122 switch (msg->msg)
1123 {
1124 case WM_LBUTTONDOWN:
1125 down = 1;
1126 /* fall through */
1127 case WM_LBUTTONUP:
1128 set_input_key_state( input, VK_LBUTTON, down );
1129 break;
1130 case WM_MBUTTONDOWN:
1131 down = 1;
1132 /* fall through */
1133 case WM_MBUTTONUP:
1134 set_input_key_state( input, VK_MBUTTON, down );
1135 break;
1136 case WM_RBUTTONDOWN:
1137 down = 1;
1138 /* fall through */
1139 case WM_RBUTTONUP:
1140 set_input_key_state( input, VK_RBUTTON, down );
1141 break;
1142 case WM_XBUTTONDOWN:
1143 down = 1;
1144 /* fall through */
1145 case WM_XBUTTONUP:
1146 if (msg->wparam == XBUTTON1) set_input_key_state( input, VK_XBUTTON1, down );
1147 else if (msg->wparam == XBUTTON2) set_input_key_state( input, VK_XBUTTON2, down );
1148 break;
1149 case WM_KEYDOWN:
1150 case WM_SYSKEYDOWN:
1151 down = 1;
1152 /* fall through */
1153 case WM_KEYUP:
1154 case WM_SYSKEYUP:
1155 key = (unsigned char)msg->wparam;
1156 extended = ((msg->lparam >> 16) & KF_EXTENDED) != 0;
1157 set_input_key_state( input, key, down );
1158 switch(key)
1159 {
1160 case VK_SHIFT:
1161 set_input_key_state( input, extended ? VK_RSHIFT : VK_LSHIFT, down );
1162 break;
1163 case VK_CONTROL:
1164 set_input_key_state( input, extended ? VK_RCONTROL : VK_LCONTROL, down );
1165 break;
1166 case VK_MENU:
1167 set_input_key_state( input, extended ? VK_RMENU : VK_LMENU, down );
1168 break;
1169 case VK_LCONTROL:
1170 case VK_RCONTROL:
1171 set_input_key_state( input, VK_CONTROL, down );
1172 break;
1173 case VK_LMENU:
1174 case VK_RMENU:
1175 set_input_key_state( input, VK_MENU, down );
1176 break;
1177 case VK_LSHIFT:
1178 case VK_RSHIFT:
1179 set_input_key_state( input, VK_SHIFT, down );
1180 break;
1181 }
1182 break;
1183 }
1184 }
1185
1186 /* release the hardware message currently being processed by the given thread */
1187 static void release_hardware_message( struct msg_queue *queue, unsigned int hw_id,
1188 int remove, user_handle_t new_win )
1189 {
1190 struct thread_input *input = queue->input;
1191 struct message *msg;
1192
1193 LIST_FOR_EACH_ENTRY( msg, &input->msg_list, struct message, entry )
1194 {
1195 if (msg->unique_id == hw_id) break;
1196 }
1197 if (&msg->entry == &input->msg_list) return; /* not found */
1198
1199 /* clear the queue bit for that message */
1200 if (remove || new_win)
1201 {
1202 struct message *other;
1203 int clr_bit;
1204
1205 clr_bit = get_hardware_msg_bit( msg );
1206 LIST_FOR_EACH_ENTRY( other, &input->msg_list, struct message, entry )
1207 {
1208 if (other != msg && get_hardware_msg_bit( other ) == clr_bit)
1209 {
1210 clr_bit = 0;
1211 break;
1212 }
1213 }
1214 if (clr_bit) clear_queue_bits( queue, clr_bit );
1215 }
1216
1217 if (new_win) /* set the new window */
1218 {
1219 struct thread *owner = get_window_thread( new_win );
1220 if (owner)
1221 {
1222 if (owner->queue->input == input)
1223 {
1224 msg->win = new_win;
1225 set_queue_bits( owner->queue, get_hardware_msg_bit( msg ));
1226 remove = 0;
1227 }
1228 release_object( owner );
1229 }
1230 }
1231 if (remove)
1232 {
1233 update_input_key_state( input, msg );
1234 list_remove( &msg->entry );
1235 free_message( msg );
1236 }
1237 }
1238
1239 /* find the window that should receive a given hardware message */
1240 static user_handle_t find_hardware_message_window( struct thread_input *input, struct message *msg,
1241 unsigned int *msg_code )
1242 {
1243 user_handle_t win = 0;
1244
1245 *msg_code = msg->msg;
1246 if (is_keyboard_msg( msg ))
1247 {
1248 if (input && !(win = input->focus))
1249 {
1250 win = input->active;
1251 if (*msg_code < WM_SYSKEYDOWN) *msg_code += WM_SYSKEYDOWN - WM_KEYDOWN;
1252 }
1253 }
1254 else /* mouse message */
1255 {
1256 if (!input || !(win = input->capture))
1257 {
1258 if (!(win = msg->win) || !is_window_visible( win ))
1259 {
1260 if (input) win = window_from_point( input->desktop, msg->x, msg->y );
1261 }
1262 }
1263 }
1264 return win;
1265 }
1266
1267 /* queue a hardware message into a given thread input */
1268 static void queue_hardware_message( struct msg_queue *queue, struct message *msg )
1269 {
1270 user_handle_t win;
1271 struct thread *thread;
1272 struct thread_input *input = queue ? queue->input : foreground_input;
1273 unsigned int msg_code;
1274
1275 last_input_time = get_tick_count();
1276 win = find_hardware_message_window( input, msg, &msg_code );
1277 if (!win || !(thread = get_window_thread(win)))
1278 {
1279 if (input) update_input_key_state( input, msg );
1280 free( msg );
1281 return;
1282 }
1283 input = thread->queue->input;
1284
1285 if (msg->msg == WM_MOUSEMOVE && merge_message( input, msg )) free( msg );
1286 else
1287 {
1288 msg->unique_id = 0; /* will be set once we return it to the app */
1289 list_add_tail( &input->msg_list, &msg->entry );
1290 set_queue_bits( thread->queue, get_hardware_msg_bit(msg) );
1291 }
1292 release_object( thread );
1293 }
1294
1295 /* check message filter for a hardware message */
1296 static int check_hw_message_filter( user_handle_t win, unsigned int msg_code,
1297 user_handle_t filter_win, unsigned int first, unsigned int last )
1298 {
1299 if (msg_code >= WM_KEYFIRST && msg_code <= WM_KEYLAST)
1300 {
1301 /* we can only test the window for a keyboard message since the
1302 * dest window for a mouse message depends on hittest */
1303 if (filter_win && win != filter_win && !is_child_window( filter_win, win ))
1304 return 0;
1305 /* the message code is final for a keyboard message, we can simply check it */
1306 return check_msg_filter( msg_code, first, last );
1307 }
1308 else /* mouse message */
1309 {
1310 /* we need to check all possible values that the message can have in the end */
1311
1312 if (check_msg_filter( msg_code, first, last )) return 1;
1313 if (msg_code == WM_MOUSEWHEEL) return 0; /* no other possible value for this one */
1314
1315 /* all other messages can become non-client messages */
1316 if (check_msg_filter( msg_code + (WM_NCMOUSEFIRST - WM_MOUSEFIRST), first, last )) return 1;
1317
1318 /* clicks can become double-clicks or non-client double-clicks */
1319 if (msg_code == WM_LBUTTONDOWN || msg_code == WM_MBUTTONDOWN ||
1320 msg_code == WM_RBUTTONDOWN || msg_code == WM_XBUTTONDOWN)
1321 {
1322 if (check_msg_filter( msg_code + (WM_LBUTTONDBLCLK - WM_LBUTTONDOWN), first, last )) return 1;
1323 if (check_msg_filter( msg_code + (WM_NCLBUTTONDBLCLK - WM_LBUTTONDOWN), first, last )) return 1;
1324 }
1325 return 0;
1326 }
1327 }
1328
1329
1330 /* find a hardware message for the given queue */
1331 static int get_hardware_message( struct thread *thread, unsigned int hw_id, user_handle_t filter_win,
1332 unsigned int first, unsigned int last, struct get_message_reply *reply )
1333 {
1334 struct thread_input *input = thread->queue->input;
1335 struct thread *win_thread;
1336 struct list *ptr;
1337 user_handle_t win;
1338 int clear_bits, got_one = 0;
1339 unsigned int msg_code;
1340
1341 ptr = list_head( &input->msg_list );
1342 if (hw_id)
1343 {
1344 while (ptr)
1345 {
1346 struct message *msg = LIST_ENTRY( ptr, struct message, entry );
1347 if (msg->unique_id == hw_id) break;
1348 ptr = list_next( &input->msg_list, ptr );
1349 }
1350 if (!ptr) ptr = list_head( &input->msg_list );
1351 else ptr = list_next( &input->msg_list, ptr ); /* start from the next one */
1352 }
1353
1354 if (ptr == list_head( &input->msg_list ))
1355 clear_bits = QS_KEY | QS_MOUSEMOVE | QS_MOUSEBUTTON;
1356 else
1357 clear_bits = 0; /* don't clear bits if we don't go through the whole list */
1358
1359 while (ptr)
1360 {
1361 struct message *msg = LIST_ENTRY( ptr, struct message, entry );
1362 ptr = list_next( &input->msg_list, ptr );
1363 win = find_hardware_message_window( input, msg, &msg_code );
1364 if (!win || !(win_thread = get_window_thread( win )))
1365 {
1366 /* no window at all, remove it */
1367 update_input_key_state( input, msg );
1368 list_remove( &msg->entry );
1369 free_message( msg );
1370 continue;
1371 }
1372 if (win_thread != thread)
1373 {
1374 if (win_thread->queue->input == input)
1375 {
1376 /* wake the other thread */
1377 set_queue_bits( win_thread->queue, get_hardware_msg_bit(msg) );
1378 got_one = 1;
1379 }
1380 else
1381 {
1382 /* for another thread input, drop it */
1383 update_input_key_state( input, msg );
1384 list_remove( &msg->entry );
1385 free_message( msg );
1386 }
1387 release_object( win_thread );
1388 continue;
1389 }
1390 release_object( win_thread );
1391
1392 /* if we already got a message for another thread, or if it doesn't
1393 * match the filter we skip it */
1394 if (got_one || !check_hw_message_filter( win, msg_code, filter_win, first, last ))
1395 {
1396 clear_bits &= ~get_hardware_msg_bit( msg );
1397 continue;
1398 }
1399 /* now we can return it */
1400 if (!msg->unique_id) msg->unique_id = get_unique_id();
1401 reply->type = MSG_HARDWARE;
1402 reply->win = win;
1403 reply->msg = msg_code;
1404 reply->wparam = msg->wparam;
1405 reply->lparam = msg->lparam;
1406 reply->x = msg->x;
1407 reply->y = msg->y;
1408 reply->time = msg->time;
1409 reply->info = msg->info;
1410 reply->hw_id = msg->unique_id;
1411 return 1;
1412 }
1413 /* nothing found, clear the hardware queue bits */
1414 clear_queue_bits( thread->queue, clear_bits );
1415 return 0;
1416 }
1417
1418 /* increment (or decrement if 'incr' is negative) the queue paint count */
1419 void inc_queue_paint_count( struct thread *thread, int incr )
1420 {
1421 struct msg_queue *queue = thread->queue;
1422
1423 assert( queue );
1424
1425 if ((queue->paint_count += incr) < 0) queue->paint_count = 0;
1426
1427 if (queue->paint_count)
1428 set_queue_bits( queue, QS_PAINT );
1429 else
1430 clear_queue_bits( queue, QS_PAINT );
1431 }
1432
1433
1434 /* remove all messages and timers belonging to a certain window */
1435 void queue_cleanup_window( struct thread *thread, user_handle_t win )
1436 {
1437 struct msg_queue *queue = thread->queue;
1438 struct list *ptr;
1439 int i;
1440
1441 if (!queue) return;
1442
1443 /* remove timers */
1444
1445 ptr = list_head( &queue->pending_timers );
1446 while (ptr)
1447 {
1448 struct list *next = list_next( &queue->pending_timers, ptr );
1449 struct timer *timer = LIST_ENTRY( ptr, struct timer, entry );
1450 if (timer->win == win) free_timer( queue, timer );
1451 ptr = next;
1452 }
1453 ptr = list_head( &queue->expired_timers );
1454 while (ptr)
1455 {
1456 struct list *next = list_next( &queue->expired_timers, ptr );
1457 struct timer *timer = LIST_ENTRY( ptr, struct timer, entry );
1458 if (timer->win == win) free_timer( queue, timer );
1459 ptr = next;
1460 }
1461
1462 /* remove messages */
1463 for (i = 0; i < NB_MSG_KINDS; i++)
1464 {
1465 struct list *ptr, *next;
1466
1467 LIST_FOR_EACH_SAFE( ptr, next, &queue->msg_list[i] )
1468 {
1469 struct message *msg = LIST_ENTRY( ptr, struct message, entry );
1470 if (msg->win == win) remove_queue_message( queue, msg, i );
1471 }
1472 }
1473
1474 thread_input_cleanup_window( queue, win );
1475 }
1476
1477 /* post a message to a window; used by socket handling */
1478 void post_message( user_handle_t win, unsigned int message,
1479 unsigned long wparam, unsigned long lparam )
1480 {
1481 struct message *msg;
1482 struct thread *thread = get_window_thread( win );
1483
1484 if (!thread) return;
1485
1486 if (thread->queue && (msg = mem_alloc( sizeof(*msg) )))
1487 {
1488 msg->type = MSG_POSTED;
1489 msg->win = get_user_full_handle( win );
1490 msg->msg = message;
1491 msg->wparam = wparam;
1492 msg->lparam = lparam;
1493 msg->time = get_tick_count();
1494 msg->x = 0;
1495 msg->y = 0;
1496 msg->info = 0;
1497 msg->result = NULL;
1498 msg->data = NULL;
1499 msg->data_size = 0;
1500
1501 list_add_tail( &thread->queue->msg_list[POST_MESSAGE], &msg->entry );
1502 set_queue_bits( thread->queue, QS_POSTMESSAGE|QS_ALLPOSTMESSAGE );
1503 }
1504 release_object( thread );
1505 }
1506
1507 /* post a win event */
1508 void post_win_event( struct thread *thread, unsigned int event,
1509 user_handle_t win, unsigned int object_id,
1510 unsigned int child_id, void *hook_proc,
1511 const WCHAR *module, data_size_t module_size,
1512 user_handle_t hook)
1513 {
1514 struct message *msg;
1515
1516 if (thread->queue && (msg = mem_alloc( sizeof(*msg) )))
1517 {
1518 struct winevent_msg_data *data;
1519
1520 msg->type = MSG_WINEVENT;
1521 msg->win = get_user_full_handle( win );
1522 msg->msg = event;
1523 msg->wparam = object_id;
1524 msg->lparam = child_id;
1525 msg->time = get_tick_count();
1526 msg->x = 0;
1527 msg->y = 0;
1528 msg->info = 0;
1529 msg->result = NULL;
1530
1531 if ((data = malloc( sizeof(*data) + module_size )))
1532 {
1533 data->hook = hook;
1534 data->tid = get_thread_id( current );
1535 data->hook_proc = hook_proc;
1536 memcpy( data + 1, module, module_size );
1537
1538 msg->data = data;
1539 msg->data_size = sizeof(*data) + module_size;
1540
1541 if (debug_level > 1)
1542 fprintf( stderr, "post_win_event: tid %04x event %04x win %p object_id %d child_id %d\n",
1543 get_thread_id(thread), event, win, object_id, child_id );
1544 list_add_tail( &thread->queue->msg_list[SEND_MESSAGE], &msg->entry );
1545 set_queue_bits( thread->queue, QS_SENDMESSAGE );
1546 }
1547 else
1548 free( msg );
1549 }
1550 }
1551
1552 /* get the message queue of the current thread */
1553 DECL_HANDLER(get_msg_queue)
1554 {
1555 struct msg_queue *queue = get_current_queue();
1556
1557 reply->handle = 0;
1558 if (queue) reply->handle = alloc_handle( current->process, queue, SYNCHRONIZE, 0 );
1559 }
1560
1561
1562 /* set the file descriptor associated to the current thread queue */
1563 DECL_HANDLER(set_queue_fd)
1564 {
1565 struct msg_queue *queue = get_current_queue();
1566 struct file *file;
1567 int unix_fd;
1568
1569 if (queue->fd) /* fd can only be set once */
1570 {
1571 set_error( STATUS_ACCESS_DENIED );
1572 return;
1573 }
1574 if (!(file = get_file_obj( current->process, req->handle, SYNCHRONIZE ))) return;
1575
1576 if ((unix_fd = get_file_unix_fd( file )) != -1)
1577 {
1578 if ((unix_fd = dup( unix_fd )) != -1)
1579 queue->fd = create_anonymous_fd( &msg_queue_fd_ops, unix_fd, &queue->obj, 0 );
1580 else
1581 file_set_error();
1582 }
1583 release_object( file );
1584 }
1585
1586
1587 /* set the current message queue wakeup mask */
1588 DECL_HANDLER(set_queue_mask)
1589 {
1590 struct msg_queue *queue = get_current_queue();
1591
1592 if (queue)
1593 {
1594 queue->wake_mask = req->wake_mask;
1595 queue->changed_mask = req->changed_mask;
1596 reply->wake_bits = queue->wake_bits;
1597 reply->changed_bits = queue->changed_bits;
1598 if (is_signaled( queue ))
1599 {
1600 /* if skip wait is set, do what would have been done in the subsequent wait */
1601 if (req->skip_wait) msg_queue_satisfied( &queue->obj, current );
1602 else wake_up( &queue->obj, 0 );
1603 }
1604 }
1605 }
1606
1607
1608 /* get the current message queue status */
1609 DECL_HANDLER(get_queue_status)
1610 {
1611 struct msg_queue *queue = current->queue;
1612 if (queue)
1613 {
1614 reply->wake_bits = queue->wake_bits;
1615 reply->changed_bits = queue->changed_bits;
1616 if (req->clear) queue->changed_bits = 0;
1617 }
1618 else reply->wake_bits = reply->changed_bits = 0;
1619 }
1620
1621
1622 /* send a message to a thread queue */
1623 DECL_HANDLER(send_message)
1624 {
1625 struct message *msg;
1626 struct msg_queue *send_queue = get_current_queue();
1627 struct msg_queue *recv_queue = NULL;
1628 struct thread *thread = NULL;
1629
1630 if (!(thread = get_thread_from_id( req->id ))) return;
1631
1632 if (!(recv_queue = thread->queue))
1633 {
1634 set_error( STATUS_INVALID_PARAMETER );
1635 release_object( thread );
1636 return;
1637 }
1638 if ((req->flags & SEND_MSG_ABORT_IF_HUNG) && is_queue_hung(recv_queue))
1639 {
1640 set_error( STATUS_TIMEOUT );
1641 release_object( thread );
1642 return;
1643 }
1644
1645 if ((msg = mem_alloc( sizeof(*msg) )))
1646 {
1647 msg->type = req->type;
1648 msg->win = get_user_full_handle( req->win );
1649 msg->msg = req->msg;
1650 msg->wparam = req->wparam;
1651 msg->lparam = req->lparam;
1652 msg->time = get_tick_count();
1653 msg->x = 0;
1654 msg->y = 0;
1655 msg->info = 0;
1656 msg->result = NULL;
1657 msg->data = NULL;
1658 msg->data_size = get_req_data_size();
1659
1660 if (msg->data_size && !(msg->data = memdup( get_req_data(), msg->data_size )))
1661 {
1662 free( msg );
1663 release_object( thread );
1664 return;
1665 }
1666
1667 switch(msg->type)
1668 {
1669 case MSG_OTHER_PROCESS:
1670 case MSG_ASCII:
1671 case MSG_UNICODE:
1672 case MSG_CALLBACK:
1673 if (!(msg->result = alloc_message_result( send_queue, recv_queue, msg, req->timeout )))
1674 {
1675 free_message( msg );
1676 break;
1677 }
1678 /* fall through */
1679 case MSG_NOTIFY:
1680 list_add_tail( &recv_queue->msg_list[SEND_MESSAGE], &msg->entry );
1681 set_queue_bits( recv_queue, QS_SENDMESSAGE );
1682 break;
1683 case MSG_POSTED:
1684 list_add_tail( &recv_queue->msg_list[POST_MESSAGE], &msg->entry );
1685 set_queue_bits( recv_queue, QS_POSTMESSAGE|QS_ALLPOSTMESSAGE );
1686 break;
1687 case MSG_HARDWARE: /* should use send_hardware_message instead */
1688 case MSG_CALLBACK_RESULT: /* cannot send this one */
1689 default:
1690 set_error( STATUS_INVALID_PARAMETER );
1691 free( msg );
1692 break;
1693 }
1694 }
1695 release_object( thread );
1696 }
1697
1698 /* send a hardware message to a thread queue */
1699 DECL_HANDLER(send_hardware_message)
1700 {
1701 struct message *msg;
1702 struct msg_queue *recv_queue = NULL;
1703 struct thread *thread = NULL;
1704
1705 if (req->id)
1706 {
1707 if (!(thread = get_thread_from_id( req->id ))) return;
1708 }
1709
1710 if (thread && !(recv_queue = thread->queue))
1711 {
1712 set_error( STATUS_INVALID_PARAMETER );
1713 release_object( thread );
1714 return;
1715 }
1716
1717 if ((msg = mem_alloc( sizeof(*msg) )))
1718 {
1719 msg->type = MSG_HARDWARE;
1720 msg->win = get_user_full_handle( req->win );
1721 msg->msg = req->msg;
1722 msg->wparam = req->wparam;
1723 msg->lparam = req->lparam;
1724 msg->time = req->time;
1725 msg->x = req->x;
1726 msg->y = req->y;
1727 msg->info = req->info;
1728 msg->result = NULL;
1729 msg->data = NULL;
1730 msg->data_size = 0;
1731 queue_hardware_message( recv_queue, msg );
1732 }
1733 if (thread) release_object( thread );
1734 }
1735
1736 /* post a quit message to the current queue */
1737 DECL_HANDLER(post_quit_message)
1738 {
1739 struct msg_queue *queue = get_current_queue();
1740
1741 if (!queue)
1742 return;
1743
1744 queue->quit_message = 1;
1745 queue->exit_code = req->exit_code;
1746 set_queue_bits( queue, QS_POSTMESSAGE|QS_ALLPOSTMESSAGE );
1747 }
1748
1749 /* get a message from the current queue */
1750 DECL_HANDLER(get_message)
1751 {
1752 struct timer *timer;
1753 struct list *ptr;
1754 struct msg_queue *queue = get_current_queue();
1755 user_handle_t get_win = get_user_full_handle( req->get_win );
1756 unsigned int filter = req->flags >> 16;
1757
1758 reply->active_hooks = get_active_hooks();
1759
1760 if (!queue) return;
1761 queue->last_get_msg = current_time;
1762 if (!filter) filter = QS_ALLINPUT;
1763
1764 /* first check for sent messages */
1765 if ((ptr = list_head( &queue->msg_list[SEND_MESSAGE] )))
1766 {
1767 struct message *msg = LIST_ENTRY( ptr, struct message, entry );
1768 receive_message( queue, msg, reply );
1769 return;
1770 }
1771
1772 /* clear changed bits so we can wait on them if we don't find a message */
1773 if (filter & QS_POSTMESSAGE)
1774 {
1775 queue->changed_bits &= ~(QS_POSTMESSAGE | QS_HOTKEY | QS_TIMER);
1776 if (req->get_first == 0 && req->get_last == ~0U) queue->changed_bits &= ~QS_ALLPOSTMESSAGE;
1777 }
1778 if (filter & QS_INPUT) queue->changed_bits &= ~QS_INPUT;
1779 if (filter & QS_PAINT) queue->changed_bits &= ~QS_PAINT;
1780
1781 /* then check for posted messages */
1782 if ((filter & QS_POSTMESSAGE) &&
1783 get_posted_message( queue, get_win, req->get_first, req->get_last, req->flags, reply ))
1784 return;
1785
1786 /* only check for quit messages if not posted messages pending.
1787 * note: the quit message isn't filtered */
1788 if (get_quit_message( queue, req->flags, reply ))
1789 return;
1790
1791 /* then check for any raw hardware message */
1792 if ((filter & QS_INPUT) &&
1793 filter_contains_hw_range( req->get_first, req->get_last ) &&
1794 get_hardware_message( current, req->hw_id, get_win, req->get_first, req->get_last, reply ))
1795 return;
1796
1797 /* now check for WM_PAINT */
1798 if ((filter & QS_PAINT) &&
1799 queue->paint_count &&
1800 check_msg_filter( WM_PAINT, req->get_first, req->get_last ) &&
1801 (reply->win = find_window_to_repaint( get_win, current )))
1802 {
1803 reply->type = MSG_POSTED;
1804 reply->msg = WM_PAINT;
1805 reply->wparam = 0;
1806 reply->lparam = 0;
1807 reply->x = 0;
1808 reply->y = 0;
1809 reply->time = get_tick_count();
1810 reply->info = 0;
1811 return;
1812 }
1813
1814 /* now check for timer */
1815 if ((filter & QS_TIMER) &&
1816 (timer = find_expired_timer( queue, get_win, req->get_first,
1817 req->get_last, (req->flags & PM_REMOVE) )))
1818 {
1819 reply->type = MSG_POSTED;
1820 reply->win = timer->win;
1821 reply->msg = timer->msg;
1822 reply->wparam = timer->id;
1823 reply->lparam = timer->lparam;
1824 reply->x = 0;
1825 reply->y = 0;
1826 reply->time = get_tick_count();
1827 reply->info = 0;
1828 return;
1829 }
1830
1831 set_error( STATUS_PENDING ); /* FIXME */
1832 }
1833
1834
1835 /* reply to a sent message */
1836 DECL_HANDLER(reply_message)
1837 {
1838 if (!current->queue) set_error( STATUS_ACCESS_DENIED );
1839 else if (current->queue->recv_result)
1840 reply_message( current->queue, req->result, 0, req->remove,
1841 get_req_data(), get_req_data_size() );
1842 }
1843
1844
1845 /* accept the current hardware message */
1846 DECL_HANDLER(accept_hardware_message)
1847 {
1848 if (current->queue)
1849 release_hardware_message( current->queue, req->hw_id, req->remove, req->new_win );
1850 else
1851 set_error( STATUS_ACCESS_DENIED );
1852 }
1853
1854
1855 /* retrieve the reply for the last message sent */
1856 DECL_HANDLER(get_message_reply)
1857 {
1858 struct message_result *result;
1859 struct list *entry;
1860 struct msg_queue *queue = current->queue;
1861
1862 if (queue)
1863 {
1864 set_error( STATUS_PENDING );
1865 reply->result = 0;
1866
1867 if (!(entry = list_head( &queue->send_result ))) return; /* no reply ready */
1868
1869 result = LIST_ENTRY( entry, struct message_result, sender_entry );
1870 if (result->replied || req->cancel)
1871 {
1872 if (result->replied)
1873 {
1874 reply->result = result->result;
1875 set_error( result->error );
1876 if (result->data)
1877 {
1878 data_size_t data_len = min( result->data_size, get_reply_max_size() );
1879 set_reply_data_ptr( result->data, data_len );
1880 result->data = NULL;
1881 result->data_size = 0;
1882 }
1883 }
1884 remove_result_from_sender( result );
1885
1886 entry = list_head( &queue->send_result );
1887 if (!entry) clear_queue_bits( queue, QS_SMRESULT );
1888 else
1889 {
1890 result = LIST_ENTRY( entry, struct message_result, sender_entry );
1891 if (!result->replied) clear_queue_bits( queue, QS_SMRESULT );
1892 }
1893 }
1894 }
1895 else set_error( STATUS_ACCESS_DENIED );
1896 }
1897
1898
1899 /* set a window timer */
1900 DECL_HANDLER(set_win_timer)
1901 {
1902 struct timer *timer;
1903 struct msg_queue *queue;
1904 struct thread *thread = NULL;
1905 user_handle_t win = 0;
1906 unsigned long id = req->id;
1907
1908 if (req->win)
1909 {
1910 if (!(win = get_user_full_handle( req->win )) || !(thread = get_window_thread( win )))
1911 {
1912 set_error( STATUS_INVALID_HANDLE );
1913 return;
1914 }
1915 if (thread->process != current->process)
1916 {
1917 release_object( thread );
1918 set_error( STATUS_ACCESS_DENIED );
1919 return;
1920 }
1921 queue = thread->queue;
1922 /* remove it if it existed already */
1923 if ((timer = find_timer( queue, win, req->msg, id ))) free_timer( queue, timer );
1924 }
1925 else
1926 {
1927 queue = get_current_queue();
1928 /* find a free id for it */
1929 do
1930 {
1931 id = queue->next_timer_id;
1932 if (++queue->next_timer_id >= 0x10000) queue->next_timer_id = 1;
1933 }
1934 while (find_timer( queue, 0, req->msg, id ));
1935 }
1936
1937 if ((timer = set_timer( queue, req->rate )))
1938 {
1939 timer->win = win;
1940 timer->msg = req->msg;
1941 timer->id = id;
1942 timer->lparam = req->lparam;
1943 reply->id = id;
1944 }
1945 if (thread) release_object( thread );
1946 }
1947
1948 /* kill a window timer */
1949 DECL_HANDLER(kill_win_timer)
1950 {
1951 struct timer *timer;
1952 struct thread *thread;
1953 user_handle_t win = 0;
1954
1955 if (req->win)
1956 {
1957 if (!(win = get_user_full_handle( req->win )) || !(thread = get_window_thread( win )))
1958 {
1959 set_error( STATUS_INVALID_HANDLE );
1960 return;
1961 }
1962 if (thread->process != current->process)
1963 {
1964 release_object( thread );
1965 set_error( STATUS_ACCESS_DENIED );
1966 return;
1967 }
1968 }
1969 else thread = (struct thread *)grab_object( current );
1970
1971 if (thread->queue && (timer = find_timer( thread->queue, win, req->msg, req->id )))
1972 free_timer( thread->queue, timer );
1973 else
1974 set_error( STATUS_INVALID_PARAMETER );
1975
1976 release_object( thread );
1977 }
1978
1979
1980 /* attach (or detach) thread inputs */
1981 DECL_HANDLER(attach_thread_input)
1982 {
1983 struct thread *thread_from = get_thread_from_id( req->tid_from );
1984 struct thread *thread_to = get_thread_from_id( req->tid_to );
1985
1986 if (!thread_from || !thread_to)
1987 {
1988 if (thread_from) release_object( thread_from );
1989 if (thread_to) release_object( thread_to );
1990 return;
1991 }
1992 if (thread_from != thread_to)
1993 {
1994 if (req->attach) attach_thread_input( thread_from, thread_to );
1995 else
1996 {
1997 if (thread_from->queue && thread_to->queue &&
1998 thread_from->queue->input == thread_to->queue->input)
1999 detach_thread_input( thread_from );
2000 else
2001 set_error( STATUS_ACCESS_DENIED );
2002 }
2003 }
2004 else set_error( STATUS_ACCESS_DENIED );
2005 release_object( thread_from );
2006 release_object( thread_to );
2007 }
2008
2009
2010 /* get thread input data */
2011 DECL_HANDLER(get_thread_input)
2012 {
2013 struct thread *thread = NULL;
2014 struct thread_input *input;
2015
2016 if (req->tid)
2017 {
2018 if (!(thread = get_thread_from_id( req->tid ))) return;
2019 input = thread->queue ? thread->queue->input : NULL;
2020 }
2021 else input = foreground_input; /* get the foreground thread info */
2022
2023 if (input)
2024 {
2025 reply->focus = input->focus;
2026 reply->capture = input->capture;
2027 reply->active = input->active;
2028 reply->menu_owner = input->menu_owner;
2029 reply->move_size = input->move_size;
2030 reply->caret = input->caret;
2031 reply->rect = input->caret_rect;
2032 }
2033 else
2034 {
2035 reply->focus = 0;
2036 reply->capture = 0;
2037 reply->active = 0;
2038 reply->menu_owner = 0;
2039 reply->move_size = 0;
2040 reply->caret = 0;
2041 reply->rect.left = reply->rect.top = reply->rect.right = reply->rect.bottom = 0;
2042 }
2043 /* foreground window is active window of foreground thread */
2044 reply->foreground = foreground_input ? foreground_input->active : 0;
2045 if (thread) release_object( thread );
2046 }
2047
2048
2049 /* retrieve queue keyboard state for a given thread */
2050 DECL_HANDLER(get_key_state)
2051 {
2052 struct thread *thread;
2053 struct thread_input *input;
2054
2055 if (!(thread = get_thread_from_id( req->tid ))) return;
2056 input = thread->queue ? thread->queue->input : NULL;
2057 if (input)
2058 {
2059 if (req->key >= 0) reply->state = input->keystate[req->key & 0xff];
2060 set_reply_data( input->keystate, min( get_reply_max_size(), sizeof(input->keystate) ));
2061 }
2062 release_object( thread );
2063 }
2064
2065
2066 /* set queue keyboard state for a given thread */
2067 DECL_HANDLER(set_key_state)
2068 {
2069 struct thread *thread = NULL;
2070 struct thread_input *input;
2071
2072 if (!(thread = get_thread_from_id( req->tid ))) return;
2073 input = thread->queue ? thread->queue->input : NULL;
2074 if (input)
2075 {
2076 data_size_t size = min( sizeof(input->keystate), get_req_data_size() );
2077 if (size) memcpy( input->keystate, get_req_data(), size );
2078 }
2079 release_object( thread );
2080 }
2081
2082
2083 /* set the system foreground window */
2084 DECL_HANDLER(set_foreground_window)
2085 {
2086 struct thread *thread;
2087 struct msg_queue *queue = get_current_queue();
2088
2089 reply->previous = foreground_input ? foreground_input->active : 0;
2090 reply->send_msg_old = (reply->previous && foreground_input != queue->input);
2091 reply->send_msg_new = FALSE;
2092
2093 if (is_top_level_window( req->handle ) &&
2094 ((thread = get_window_thread( req->handle ))))
2095 {
2096 foreground_input = thread->queue->input;
2097 reply->send_msg_new = (foreground_input != queue->input);
2098 release_object( thread );
2099 }
2100 else set_win32_error( ERROR_INVALID_WINDOW_HANDLE );
2101 }
2102
2103
2104 /* set the current thread focus window */
2105 DECL_HANDLER(set_focus_window)
2106 {
2107 struct msg_queue *queue = get_current_queue();
2108
2109 reply->previous = 0;
2110 if (queue && check_queue_input_window( queue, req->handle ))
2111 {
2112 reply->previous = queue->input->focus;
2113 queue->input->focus = get_user_full_handle( req->handle );
2114 }
2115 }
2116
2117
2118 /* set the current thread active window */
2119 DECL_HANDLER(set_active_window)
2120 {
2121 struct msg_queue *queue = get_current_queue();
2122
2123 reply->previous = 0;
2124 if (queue && check_queue_input_window( queue, req->handle ))
2125 {
2126 if (!req->handle || make_window_active( req->handle ))
2127 {
2128 reply->previous = queue->input->active;
2129 queue->input->active = get_user_full_handle( req->handle );
2130 }
2131 else set_error( STATUS_INVALID_HANDLE );
2132 }
2133 }
2134
2135
2136 /* set the current thread capture window */
2137 DECL_HANDLER(set_capture_window)
2138 {
2139 struct msg_queue *queue = get_current_queue();
2140
2141 reply->previous = reply->full_handle = 0;
2142 if (queue && check_queue_input_window( queue, req->handle ))
2143 {
2144 struct thread_input *input = queue->input;
2145
2146 reply->previous = input->capture;
2147 input->capture = get_user_full_handle( req->handle );
2148 input->menu_owner = (req->flags & CAPTURE_MENU) ? input->capture : 0;
2149 input->move_size = (req->flags & CAPTURE_MOVESIZE) ? input->capture : 0;
2150 reply->full_handle = input->capture;
2151 }
2152 }
2153
2154
2155 /* Set the current thread caret window */
2156 DECL_HANDLER(set_caret_window)
2157 {
2158 struct msg_queue *queue = get_current_queue();
2159
2160 reply->previous = 0;
2161 if (queue && check_queue_input_window( queue, req->handle ))
2162 {
2163 struct thread_input *input = queue->input;
2164
2165 reply->previous = input->caret;
2166 reply->old_rect = input->caret_rect;
2167 reply->old_hide = input->caret_hide;
2168 reply->old_state = input->caret_state;
2169
2170 set_caret_window( input, get_user_full_handle(req->handle) );
2171 input->caret_rect.right = input->caret_rect.left + req->width;
2172 input->caret_rect.bottom = input->caret_rect.top + req->height;
2173 }
2174 }
2175
2176
2177 /* Set the current thread caret information */
2178 DECL_HANDLER(set_caret_info)
2179 {
2180 struct msg_queue *queue = get_current_queue();
2181 struct thread_input *input;
2182
2183 if (!queue) return;
2184 input = queue->input;
2185 reply->full_handle = input->caret;
2186 reply->old_rect = input->caret_rect;
2187 reply->old_hide = input->caret_hide;
2188 reply->old_state = input->caret_state;
2189
2190 if (req->handle && get_user_full_handle(req->handle) != input->caret)
2191 {
2192 set_error( STATUS_ACCESS_DENIED );
2193 return;
2194 }
2195 if (req->flags & SET_CARET_POS)
2196 {
2197 input->caret_rect.right += req->x - input->caret_rect.left;
2198 input->caret_rect.bottom += req->y - input->caret_rect.top;
2199 input->caret_rect.left = req->x;
2200 input->caret_rect.top = req->y;
2201 }
2202 if (req->flags & SET_CARET_HIDE)
2203 {
2204 input->caret_hide += req->hide;
2205 if (input->caret_hide < 0) input->caret_hide = 0;
2206 }
2207 if (req->flags & SET_CARET_STATE)
2208 {
2209 if (req->state == -1) input->caret_state = !input->caret_state;
2210 else input->caret_state = !!req->state;
2211 }
2212 }
2213
2214
2215 /* get the time of the last input event */
2216 DECL_HANDLER(get_last_input_time)
2217 {
2218 reply->time = last_input_time;
2219 }