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Sweden-Number/server/queue.c

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/*
* Server-side message queues
*
* Copyright (C) 2000 Alexandre Julliard
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
*/
#include "config.h"
#include "wine/port.h"
#include <assert.h>
#include <stdarg.h>
#include <stdio.h>
#include <stdlib.h>
#include "ntstatus.h"
#define WIN32_NO_STATUS
#include "windef.h"
#include "winbase.h"
#include "wingdi.h"
#include "winuser.h"
#include "winternl.h"
#include "handle.h"
#include "file.h"
#include "thread.h"
#include "process.h"
#include "request.h"
#include "user.h"
#define WM_NCMOUSEFIRST WM_NCMOUSEMOVE
#define WM_NCMOUSELAST (WM_NCMOUSEFIRST+(WM_MOUSELAST-WM_MOUSEFIRST))
enum message_kind { SEND_MESSAGE, POST_MESSAGE };
#define NB_MSG_KINDS (POST_MESSAGE+1)
struct message_result
{
struct list sender_entry; /* entry in sender list */
struct message *msg; /* message the result is for */
struct message_result *recv_next; /* next in receiver list */
struct msg_queue *sender; /* sender queue */
struct msg_queue *receiver; /* receiver queue */
int replied; /* has it been replied to? */
unsigned int error; /* error code to pass back to sender */
lparam_t result; /* reply result */
struct message *hardware_msg; /* hardware message if low-level hook result */
struct desktop *desktop; /* desktop for hardware message */
struct message *callback_msg; /* message to queue for callback */
void *data; /* message reply data */
unsigned int data_size; /* size of message reply data */
struct timeout_user *timeout; /* result timeout */
};
struct message
{
struct list entry; /* entry in message list */
enum message_type type; /* message type */
user_handle_t win; /* window handle */
unsigned int msg; /* message code */
lparam_t wparam; /* parameters */
lparam_t lparam; /* parameters */
unsigned int time; /* message time */
void *data; /* message data for sent messages */
unsigned int data_size; /* size of message data */
unsigned int unique_id; /* unique id for nested hw message waits */
struct message_result *result; /* result in sender queue */
};
struct timer
{
struct list entry; /* entry in timer list */
timeout_t when; /* next expiration */
unsigned int rate; /* timer rate in ms */
user_handle_t win; /* window handle */
unsigned int msg; /* message to post */
lparam_t id; /* timer id */
lparam_t lparam; /* lparam for message */
};
struct thread_input
{
struct object obj; /* object header */
struct desktop *desktop; /* desktop that this thread input belongs to */
user_handle_t focus; /* focus window */
user_handle_t capture; /* capture window */
user_handle_t active; /* active window */
user_handle_t menu_owner; /* current menu owner window */
user_handle_t move_size; /* current moving/resizing window */
user_handle_t caret; /* caret window */
rectangle_t caret_rect; /* caret rectangle */
int caret_hide; /* caret hide count */
int caret_state; /* caret on/off state */
user_handle_t cursor; /* current cursor */
int cursor_count; /* cursor show count */
struct list msg_list; /* list of hardware messages */
unsigned char keystate[256]; /* state of each key */
};
struct msg_queue
{
struct object obj; /* object header */
struct fd *fd; /* optional file descriptor to poll */
unsigned int wake_bits; /* wakeup bits */
unsigned int wake_mask; /* wakeup mask */
unsigned int changed_bits; /* changed wakeup bits */
unsigned int changed_mask; /* changed wakeup mask */
int paint_count; /* pending paint messages count */
int hotkey_count; /* pending hotkey messages count */
int quit_message; /* is there a pending quit message? */
int exit_code; /* exit code of pending quit message */
int cursor_count; /* per-queue cursor show count */
struct list msg_list[NB_MSG_KINDS]; /* lists of messages */
struct list send_result; /* stack of sent messages waiting for result */
struct list callback_result; /* list of callback messages waiting for result */
struct message_result *recv_result; /* stack of received messages waiting for result */
struct list pending_timers; /* list of pending timers */
struct list expired_timers; /* list of expired timers */
lparam_t next_timer_id; /* id for the next timer with a 0 window */
struct timeout_user *timeout; /* timeout for next timer to expire */
struct thread_input *input; /* thread input descriptor */
struct hook_table *hooks; /* hook table */
timeout_t last_get_msg; /* time of last get message call */
};
struct hotkey
{
struct list entry; /* entry in desktop hotkey list */
struct msg_queue *queue; /* queue owning this hotkey */
user_handle_t win; /* window handle */
int id; /* hotkey id */
unsigned int vkey; /* virtual key code */
unsigned int flags; /* key modifiers */
};
static void msg_queue_dump( struct object *obj, int verbose );
static int msg_queue_add_queue( struct object *obj, struct wait_queue_entry *entry );
static void msg_queue_remove_queue( struct object *obj, struct wait_queue_entry *entry );
static int msg_queue_signaled( struct object *obj, struct thread *thread );
static int msg_queue_satisfied( struct object *obj, struct thread *thread );
static void msg_queue_destroy( struct object *obj );
static void msg_queue_poll_event( struct fd *fd, int event );
static void thread_input_dump( struct object *obj, int verbose );
static void thread_input_destroy( struct object *obj );
static void timer_callback( void *private );
static const struct object_ops msg_queue_ops =
{
sizeof(struct msg_queue), /* size */
msg_queue_dump, /* dump */
no_get_type, /* get_type */
msg_queue_add_queue, /* add_queue */
msg_queue_remove_queue, /* remove_queue */
msg_queue_signaled, /* signaled */
msg_queue_satisfied, /* satisfied */
no_signal, /* signal */
no_get_fd, /* get_fd */
no_map_access, /* map_access */
default_get_sd, /* get_sd */
default_set_sd, /* set_sd */
no_lookup_name, /* lookup_name */
no_open_file, /* open_file */
no_close_handle, /* close_handle */
msg_queue_destroy /* destroy */
};
static const struct fd_ops msg_queue_fd_ops =
{
NULL, /* get_poll_events */
msg_queue_poll_event, /* poll_event */
NULL, /* flush */
NULL, /* get_fd_type */
NULL, /* ioctl */
NULL, /* queue_async */
NULL, /* reselect_async */
NULL /* cancel async */
};
static const struct object_ops thread_input_ops =
{
sizeof(struct thread_input), /* size */
thread_input_dump, /* dump */
no_get_type, /* get_type */
no_add_queue, /* add_queue */
NULL, /* remove_queue */
NULL, /* signaled */
NULL, /* satisfied */
no_signal, /* signal */
no_get_fd, /* get_fd */
no_map_access, /* map_access */
default_get_sd, /* get_sd */
default_set_sd, /* set_sd */
no_lookup_name, /* lookup_name */
no_open_file, /* open_file */
no_close_handle, /* close_handle */
thread_input_destroy /* destroy */
};
/* pointer to input structure of foreground thread */
static unsigned int last_input_time;
static void queue_hardware_message( struct desktop *desktop, struct message *msg, int always_queue );
static void free_message( struct message *msg );
/* set the caret window in a given thread input */
static void set_caret_window( struct thread_input *input, user_handle_t win )
{
if (!win || win != input->caret)
{
input->caret_rect.left = 0;
input->caret_rect.top = 0;
input->caret_rect.right = 0;
input->caret_rect.bottom = 0;
}
input->caret = win;
input->caret_hide = 1;
input->caret_state = 0;
}
/* create a thread input object */
static struct thread_input *create_thread_input( struct thread *thread )
{
struct thread_input *input;
if ((input = alloc_object( &thread_input_ops )))
{
input->focus = 0;
input->capture = 0;
input->active = 0;
input->menu_owner = 0;
input->move_size = 0;
input->cursor = 0;
input->cursor_count = 0;
list_init( &input->msg_list );
set_caret_window( input, 0 );
memset( input->keystate, 0, sizeof(input->keystate) );
if (!(input->desktop = get_thread_desktop( thread, 0 /* FIXME: access rights */ )))
{
release_object( input );
return NULL;
}
}
return input;
}
/* create a message queue object */
static struct msg_queue *create_msg_queue( struct thread *thread, struct thread_input *input )
{
struct thread_input *new_input = NULL;
struct msg_queue *queue;
int i;
if (!input)
{
if (!(new_input = create_thread_input( thread ))) return NULL;
input = new_input;
}
if ((queue = alloc_object( &msg_queue_ops )))
{
queue->fd = NULL;
queue->wake_bits = 0;
queue->wake_mask = 0;
queue->changed_bits = 0;
queue->changed_mask = 0;
queue->paint_count = 0;
queue->hotkey_count = 0;
queue->quit_message = 0;
queue->cursor_count = 0;
queue->recv_result = NULL;
queue->next_timer_id = 0x7fff;
queue->timeout = NULL;
queue->input = (struct thread_input *)grab_object( input );
queue->hooks = NULL;
queue->last_get_msg = current_time;
list_init( &queue->send_result );
list_init( &queue->callback_result );
list_init( &queue->pending_timers );
list_init( &queue->expired_timers );
for (i = 0; i < NB_MSG_KINDS; i++) list_init( &queue->msg_list[i] );
thread->queue = queue;
}
if (new_input) release_object( new_input );
return queue;
}
/* free the message queue of a thread at thread exit */
void free_msg_queue( struct thread *thread )
{
remove_thread_hooks( thread );
if (!thread->queue) return;
release_object( thread->queue );
thread->queue = NULL;
}
/* change the thread input data of a given thread */
static int assign_thread_input( struct thread *thread, struct thread_input *new_input )
{
struct msg_queue *queue = thread->queue;
if (!queue)
{
thread->queue = create_msg_queue( thread, new_input );
return thread->queue != NULL;
}
if (queue->input)
{
queue->input->cursor_count -= queue->cursor_count;
release_object( queue->input );
}
queue->input = (struct thread_input *)grab_object( new_input );
new_input->cursor_count += queue->cursor_count;
return 1;
}
/* set the cursor position and queue the corresponding mouse message */
static void set_cursor_pos( struct desktop *desktop, int x, int y )
{
struct hardware_msg_data *msg_data;
struct message *msg;
if (!(msg = mem_alloc( sizeof(*msg) ))) return;
if (!(msg_data = mem_alloc( sizeof(*msg_data) )))
{
free( msg );
return;
}
memset( msg_data, 0, sizeof(*msg_data) );
msg->type = MSG_HARDWARE;
msg->win = 0;
msg->msg = WM_MOUSEMOVE;
msg->wparam = 0;
msg->lparam = 0;
msg->time = get_tick_count();
msg->result = NULL;
msg->data = msg_data;
msg->data_size = sizeof(*msg_data);
msg_data->x = x;
msg_data->y = y;
queue_hardware_message( desktop, msg, 1 );
}
/* set the cursor clip rectangle */
static void set_clip_rectangle( struct desktop *desktop, const rectangle_t *rect )
{
rectangle_t top_rect;
int x, y;
get_top_window_rectangle( desktop, &top_rect );
if (rect)
{
rectangle_t new_rect = *rect;
if (new_rect.left < top_rect.left) new_rect.left = top_rect.left;
if (new_rect.right > top_rect.right) new_rect.right = top_rect.right;
if (new_rect.top < top_rect.top) new_rect.top = top_rect.top;
if (new_rect.bottom > top_rect.bottom) new_rect.bottom = top_rect.bottom;
if (new_rect.left > new_rect.right || new_rect.top > new_rect.bottom) new_rect = top_rect;
desktop->cursor.clip = new_rect;
}
else desktop->cursor.clip = top_rect;
if (desktop->cursor.clip_msg)
post_desktop_message( desktop, desktop->cursor.clip_msg, rect != NULL, 0 );
/* warp the mouse to be inside the clip rect */
x = min( max( desktop->cursor.x, desktop->cursor.clip.left ), desktop->cursor.clip.right-1 );
y = min( max( desktop->cursor.y, desktop->cursor.clip.top ), desktop->cursor.clip.bottom-1 );
if (x != desktop->cursor.x || y != desktop->cursor.y) set_cursor_pos( desktop, x, y );
}
/* change the foreground input and reset the cursor clip rect */
static void set_foreground_input( struct desktop *desktop, struct thread_input *input )
{
if (desktop->foreground_input == input) return;
set_clip_rectangle( desktop, NULL );
desktop->foreground_input = input;
}
/* get the hook table for a given thread */
struct hook_table *get_queue_hooks( struct thread *thread )
{
if (!thread->queue) return NULL;
return thread->queue->hooks;
}
/* set the hook table for a given thread, allocating the queue if needed */
void set_queue_hooks( struct thread *thread, struct hook_table *hooks )
{
struct msg_queue *queue = thread->queue;
if (!queue && !(queue = create_msg_queue( thread, NULL ))) return;
if (queue->hooks) release_object( queue->hooks );
queue->hooks = hooks;
}
/* check the queue status */
static inline int is_signaled( struct msg_queue *queue )
{
return ((queue->wake_bits & queue->wake_mask) || (queue->changed_bits & queue->changed_mask));
}
/* set some queue bits */
static inline void set_queue_bits( struct msg_queue *queue, unsigned int bits )
{
queue->wake_bits |= bits;
queue->changed_bits |= bits;
if (is_signaled( queue )) wake_up( &queue->obj, 0 );
}
/* clear some queue bits */
static inline void clear_queue_bits( struct msg_queue *queue, unsigned int bits )
{
queue->wake_bits &= ~bits;
queue->changed_bits &= ~bits;
}
/* check whether msg is a keyboard message */
static inline int is_keyboard_msg( struct message *msg )
{
return (msg->msg >= WM_KEYFIRST && msg->msg <= WM_KEYLAST);
}
/* check if message is matched by the filter */
static inline int check_msg_filter( unsigned int msg, unsigned int first, unsigned int last )
{
return (msg >= first && msg <= last);
}
/* check whether a message filter contains at least one potential hardware message */
static inline int filter_contains_hw_range( unsigned int first, unsigned int last )
{
/* hardware message ranges are (in numerical order):
* WM_NCMOUSEFIRST .. WM_NCMOUSELAST
* WM_KEYFIRST .. WM_KEYLAST
* WM_MOUSEFIRST .. WM_MOUSELAST
*/
if (last < WM_NCMOUSEFIRST) return 0;
if (first > WM_NCMOUSELAST && last < WM_KEYFIRST) return 0;
if (first > WM_KEYLAST && last < WM_MOUSEFIRST) return 0;
if (first > WM_MOUSELAST) return 0;
return 1;
}
/* get the QS_* bit corresponding to a given hardware message */
static inline int get_hardware_msg_bit( struct message *msg )
{
if (msg->msg == WM_MOUSEMOVE || msg->msg == WM_NCMOUSEMOVE) return QS_MOUSEMOVE;
if (is_keyboard_msg( msg )) return QS_KEY;
return QS_MOUSEBUTTON;
}
/* get the current thread queue, creating it if needed */
static inline struct msg_queue *get_current_queue(void)
{
struct msg_queue *queue = current->queue;
if (!queue) queue = create_msg_queue( current, NULL );
return queue;
}
/* get a (pseudo-)unique id to tag hardware messages */
static inline unsigned int get_unique_id(void)
{
static unsigned int id;
if (!++id) id = 1; /* avoid an id of 0 */
return id;
}
/* try to merge a message with the last in the list; return 1 if successful */
static int merge_message( struct thread_input *input, const struct message *msg )
{
struct message *prev;
struct list *ptr;
if (msg->msg != WM_MOUSEMOVE) return 0;
if (!(ptr = list_tail( &input->msg_list ))) return 0;
prev = LIST_ENTRY( ptr, struct message, entry );
if (prev->result) return 0;
if (prev->win && msg->win && prev->win != msg->win) return 0;
if (prev->msg != msg->msg) return 0;
if (prev->type != msg->type) return 0;
/* now we can merge it */
prev->wparam = msg->wparam;
prev->lparam = msg->lparam;
prev->time = msg->time;
if (msg->type == MSG_HARDWARE && prev->data && msg->data)
{
struct hardware_msg_data *prev_data = prev->data;
struct hardware_msg_data *msg_data = msg->data;
prev_data->x = msg_data->x;
prev_data->y = msg_data->y;
prev_data->info = msg_data->info;
}
return 1;
}
/* free a result structure */
static void free_result( struct message_result *result )
{
if (result->timeout) remove_timeout_user( result->timeout );
free( result->data );
if (result->callback_msg) free_message( result->callback_msg );
if (result->hardware_msg) free_message( result->hardware_msg );
if (result->desktop) release_object( result->desktop );
free( result );
}
/* remove the result from the sender list it is on */
static inline void remove_result_from_sender( struct message_result *result )
{
assert( result->sender );
list_remove( &result->sender_entry );
result->sender = NULL;
if (!result->receiver) free_result( result );
}
/* store the message result in the appropriate structure */
static void store_message_result( struct message_result *res, lparam_t result, unsigned int error )
{
res->result = result;
res->error = error;
res->replied = 1;
if (res->timeout)
{
remove_timeout_user( res->timeout );
res->timeout = NULL;
}
if (res->hardware_msg)
{
if (!error && result) /* rejected by the hook */
free_message( res->hardware_msg );
else
queue_hardware_message( res->desktop, res->hardware_msg, 0 );
res->hardware_msg = NULL;
}
if (res->sender)
{
if (res->callback_msg)
{
/* queue the callback message in the sender queue */
struct callback_msg_data *data = res->callback_msg->data;
data->result = result;
list_add_tail( &res->sender->msg_list[SEND_MESSAGE], &res->callback_msg->entry );
set_queue_bits( res->sender, QS_SENDMESSAGE );
res->callback_msg = NULL;
remove_result_from_sender( res );
}
else
{
/* wake sender queue if waiting on this result */
if (list_head(&res->sender->send_result) == &res->sender_entry)
set_queue_bits( res->sender, QS_SMRESULT );
}
}
else if (!res->receiver) free_result( res );
}
/* free a message when deleting a queue or window */
static void free_message( struct message *msg )
{
struct message_result *result = msg->result;
if (result)
{
result->msg = NULL;
result->receiver = NULL;
store_message_result( result, 0, STATUS_ACCESS_DENIED /*FIXME*/ );
}
free( msg->data );
free( msg );
}
/* remove (and free) a message from a message list */
static void remove_queue_message( struct msg_queue *queue, struct message *msg,
enum message_kind kind )
{
list_remove( &msg->entry );
switch(kind)
{
case SEND_MESSAGE:
if (list_empty( &queue->msg_list[kind] )) clear_queue_bits( queue, QS_SENDMESSAGE );
break;
case POST_MESSAGE:
if (list_empty( &queue->msg_list[kind] ) && !queue->quit_message)
clear_queue_bits( queue, QS_POSTMESSAGE|QS_ALLPOSTMESSAGE );
if (msg->msg == WM_HOTKEY && --queue->hotkey_count == 0)
clear_queue_bits( queue, QS_HOTKEY );
break;
}
free_message( msg );
}
/* message timed out without getting a reply */
static void result_timeout( void *private )
{
struct message_result *result = private;
assert( !result->replied );
result->timeout = NULL;
if (result->msg) /* not received yet */
{
struct message *msg = result->msg;
result->msg = NULL;
msg->result = NULL;
remove_queue_message( result->receiver, msg, SEND_MESSAGE );
result->receiver = NULL;
}
store_message_result( result, 0, STATUS_TIMEOUT );
}
/* allocate and fill a message result structure */
static struct message_result *alloc_message_result( struct msg_queue *send_queue,
struct msg_queue *recv_queue,
struct message *msg, timeout_t timeout )
{
struct message_result *result = mem_alloc( sizeof(*result) );
if (result)
{
result->msg = msg;
result->sender = send_queue;
result->receiver = recv_queue;
result->replied = 0;
result->data = NULL;
result->data_size = 0;
result->timeout = NULL;
result->hardware_msg = NULL;
result->desktop = NULL;
result->callback_msg = NULL;
if (msg->type == MSG_CALLBACK)
{
struct message *callback_msg = mem_alloc( sizeof(*callback_msg) );
if (!callback_msg)
{
free( result );
return NULL;
}
callback_msg->type = MSG_CALLBACK_RESULT;
callback_msg->win = msg->win;
callback_msg->msg = msg->msg;
callback_msg->wparam = 0;
callback_msg->lparam = 0;
callback_msg->time = get_tick_count();
callback_msg->result = NULL;
/* steal the data from the original message */
callback_msg->data = msg->data;
callback_msg->data_size = msg->data_size;
msg->data = NULL;
msg->data_size = 0;
result->callback_msg = callback_msg;
list_add_head( &send_queue->callback_result, &result->sender_entry );
}
else if (send_queue) list_add_head( &send_queue->send_result, &result->sender_entry );
if (timeout != TIMEOUT_INFINITE)
result->timeout = add_timeout_user( timeout, result_timeout, result );
}
return result;
}
/* receive a message, removing it from the sent queue */
static void receive_message( struct msg_queue *queue, struct message *msg,
struct get_message_reply *reply )
{
struct message_result *result = msg->result;
reply->total = msg->data_size;
if (msg->data_size > get_reply_max_size())
{
set_error( STATUS_BUFFER_OVERFLOW );
return;
}
reply->type = msg->type;
reply->win = msg->win;
reply->msg = msg->msg;
reply->wparam = msg->wparam;
reply->lparam = msg->lparam;
reply->time = msg->time;
if (msg->data) set_reply_data_ptr( msg->data, msg->data_size );
list_remove( &msg->entry );
/* put the result on the receiver result stack */
if (result)
{
result->msg = NULL;
result->recv_next = queue->recv_result;
queue->recv_result = result;
}
free( msg );
if (list_empty( &queue->msg_list[SEND_MESSAGE] )) clear_queue_bits( queue, QS_SENDMESSAGE );
}
/* set the result of the current received message */
static void reply_message( struct msg_queue *queue, lparam_t result,
unsigned int error, int remove, const void *data, data_size_t len )
{
struct message_result *res = queue->recv_result;
if (remove)
{
queue->recv_result = res->recv_next;
res->receiver = NULL;
if (!res->sender && !res->hardware_msg) /* no one waiting for it */
{
free_result( res );
return;
}
}
if (!res->replied)
{
if (len && (res->data = memdup( data, len ))) res->data_size = len;
store_message_result( res, result, error );
}
}
static int match_window( user_handle_t win, user_handle_t msg_win )
{
if (!win) return 1;
if (win == -1 || win == 1) return !msg_win;
if (msg_win == win) return 1;
return is_child_window( win, msg_win );
}
/* retrieve a posted message */
static int get_posted_message( struct msg_queue *queue, user_handle_t win,
unsigned int first, unsigned int last, unsigned int flags,
struct get_message_reply *reply )
{
struct message *msg;
/* check against the filters */
LIST_FOR_EACH_ENTRY( msg, &queue->msg_list[POST_MESSAGE], struct message, entry )
{
if (!match_window( win, msg->win )) continue;
if (!check_msg_filter( msg->msg, first, last )) continue;
goto found; /* found one */
}
return 0;
/* return it to the app */
found:
reply->total = msg->data_size;
if (msg->data_size > get_reply_max_size())
{
set_error( STATUS_BUFFER_OVERFLOW );
return 1;
}
reply->type = msg->type;
reply->win = msg->win;
reply->msg = msg->msg;
reply->wparam = msg->wparam;
reply->lparam = msg->lparam;
reply->time = msg->time;
if (flags & PM_REMOVE)
{
if (msg->data)
{
set_reply_data_ptr( msg->data, msg->data_size );
msg->data = NULL;
msg->data_size = 0;
}
remove_queue_message( queue, msg, POST_MESSAGE );
}
else if (msg->data) set_reply_data( msg->data, msg->data_size );
return 1;
}
static int get_quit_message( struct msg_queue *queue, unsigned int flags,
struct get_message_reply *reply )
{
if (queue->quit_message)
{
reply->total = 0;
reply->type = MSG_POSTED;
reply->win = 0;
reply->msg = WM_QUIT;
reply->wparam = queue->exit_code;
reply->lparam = 0;
reply->time = get_tick_count();
if (flags & PM_REMOVE)
{
queue->quit_message = 0;
if (list_empty( &queue->msg_list[POST_MESSAGE] ))
clear_queue_bits( queue, QS_POSTMESSAGE|QS_ALLPOSTMESSAGE );
}
return 1;
}
else
return 0;
}
/* empty a message list and free all the messages */
static void empty_msg_list( struct list *list )
{
struct list *ptr;
while ((ptr = list_head( list )) != NULL)
{
struct message *msg = LIST_ENTRY( ptr, struct message, entry );
list_remove( &msg->entry );
free_message( msg );
}
}
/* cleanup all pending results when deleting a queue */
static void cleanup_results( struct msg_queue *queue )
{
struct list *entry;
while ((entry = list_head( &queue->send_result )) != NULL)
{
remove_result_from_sender( LIST_ENTRY( entry, struct message_result, sender_entry ) );
}
while ((entry = list_head( &queue->callback_result )) != NULL)
{
remove_result_from_sender( LIST_ENTRY( entry, struct message_result, sender_entry ) );
}
while (queue->recv_result)
reply_message( queue, 0, STATUS_ACCESS_DENIED /*FIXME*/, 1, NULL, 0 );
}
/* check if the thread owning the queue is hung (not checking for messages) */
static int is_queue_hung( struct msg_queue *queue )
{
struct wait_queue_entry *entry;
if (current_time - queue->last_get_msg <= 5 * TICKS_PER_SEC)
return 0; /* less than 5 seconds since last get message -> not hung */
LIST_FOR_EACH_ENTRY( entry, &queue->obj.wait_queue, struct wait_queue_entry, entry )
{
if (entry->thread->queue == queue)
return 0; /* thread is waiting on queue -> not hung */
}
return 1;
}
static int msg_queue_add_queue( struct object *obj, struct wait_queue_entry *entry )
{
struct msg_queue *queue = (struct msg_queue *)obj;
struct process *process = entry->thread->process;
/* a thread can only wait on its own queue */
if (entry->thread->queue != queue)
{
set_error( STATUS_ACCESS_DENIED );
return 0;
}
if (process->idle_event && !(queue->wake_mask & QS_SMRESULT)) set_event( process->idle_event );
if (queue->fd && list_empty( &obj->wait_queue )) /* first on the queue */
set_fd_events( queue->fd, POLLIN );
add_queue( obj, entry );
return 1;
}
static void msg_queue_remove_queue(struct object *obj, struct wait_queue_entry *entry )
{
struct msg_queue *queue = (struct msg_queue *)obj;
remove_queue( obj, entry );
if (queue->fd && list_empty( &obj->wait_queue )) /* last on the queue is gone */
set_fd_events( queue->fd, 0 );
}
static void msg_queue_dump( struct object *obj, int verbose )
{
struct msg_queue *queue = (struct msg_queue *)obj;
fprintf( stderr, "Msg queue bits=%x mask=%x\n",
queue->wake_bits, queue->wake_mask );
}
static int msg_queue_signaled( struct object *obj, struct thread *thread )
{
struct msg_queue *queue = (struct msg_queue *)obj;
int ret = 0;
if (queue->fd)
{
if ((ret = check_fd_events( queue->fd, POLLIN )))
/* stop waiting on select() if we are signaled */
set_fd_events( queue->fd, 0 );
else if (!list_empty( &obj->wait_queue ))
/* restart waiting on poll() if we are no longer signaled */
set_fd_events( queue->fd, POLLIN );
}
return ret || is_signaled( queue );
}
static int msg_queue_satisfied( struct object *obj, struct thread *thread )
{
struct msg_queue *queue = (struct msg_queue *)obj;
queue->wake_mask = 0;
queue->changed_mask = 0;
return 0; /* Not abandoned */
}
static void msg_queue_destroy( struct object *obj )
{
struct msg_queue *queue = (struct msg_queue *)obj;
struct list *ptr;
struct hotkey *hotkey, *hotkey2;
int i;
cleanup_results( queue );
for (i = 0; i < NB_MSG_KINDS; i++) empty_msg_list( &queue->msg_list[i] );
LIST_FOR_EACH_ENTRY_SAFE( hotkey, hotkey2, &queue->input->desktop->hotkeys, struct hotkey, entry )
{
if (hotkey->queue == queue)
{
list_remove( &hotkey->entry );
free( hotkey );
}
}
while ((ptr = list_head( &queue->pending_timers )))
{
struct timer *timer = LIST_ENTRY( ptr, struct timer, entry );
list_remove( &timer->entry );
free( timer );
}
while ((ptr = list_head( &queue->expired_timers )))
{
struct timer *timer = LIST_ENTRY( ptr, struct timer, entry );
list_remove( &timer->entry );
free( timer );
}
if (queue->timeout) remove_timeout_user( queue->timeout );
queue->input->cursor_count -= queue->cursor_count;
release_object( queue->input );
if (queue->hooks) release_object( queue->hooks );
if (queue->fd) release_object( queue->fd );
}
static void msg_queue_poll_event( struct fd *fd, int event )
{
struct msg_queue *queue = get_fd_user( fd );
assert( queue->obj.ops == &msg_queue_ops );
if (event & (POLLERR | POLLHUP)) set_fd_events( fd, -1 );
else set_fd_events( queue->fd, 0 );
wake_up( &queue->obj, 0 );
}
static void thread_input_dump( struct object *obj, int verbose )
{
struct thread_input *input = (struct thread_input *)obj;
fprintf( stderr, "Thread input focus=%08x capture=%08x active=%08x\n",
input->focus, input->capture, input->active );
}
static void thread_input_destroy( struct object *obj )
{
struct thread_input *input = (struct thread_input *)obj;
empty_msg_list( &input->msg_list );
if (input->desktop)
{
if (input->desktop->foreground_input == input) set_foreground_input( input->desktop, NULL );
release_object( input->desktop );
}
}
/* fix the thread input data when a window is destroyed */
static inline void thread_input_cleanup_window( struct msg_queue *queue, user_handle_t window )
{
struct thread_input *input = queue->input;
if (window == input->focus) input->focus = 0;
if (window == input->capture) input->capture = 0;
if (window == input->active) input->active = 0;
if (window == input->menu_owner) input->menu_owner = 0;
if (window == input->move_size) input->move_size = 0;
if (window == input->caret) set_caret_window( input, 0 );
}
/* check if the specified window can be set in the input data of a given queue */
static int check_queue_input_window( struct msg_queue *queue, user_handle_t window )
{
struct thread *thread;
int ret = 0;
if (!window) return 1; /* we can always clear the data */
if ((thread = get_window_thread( window )))
{
ret = (queue->input == thread->queue->input);
if (!ret) set_error( STATUS_ACCESS_DENIED );
release_object( thread );
}
else set_error( STATUS_INVALID_HANDLE );
return ret;
}
/* make sure the specified thread has a queue */
int init_thread_queue( struct thread *thread )
{
if (thread->queue) return 1;
return (create_msg_queue( thread, NULL ) != NULL);
}
/* attach two thread input data structures */
int attach_thread_input( struct thread *thread_from, struct thread *thread_to )
{
struct desktop *desktop;
struct thread_input *input;
int ret;
if (!thread_to->queue && !(thread_to->queue = create_msg_queue( thread_to, NULL ))) return 0;
if (!(desktop = get_thread_desktop( thread_from, 0 ))) return 0;
input = (struct thread_input *)grab_object( thread_to->queue->input );
if (input->desktop != desktop)
{
set_error( STATUS_ACCESS_DENIED );
release_object( input );
release_object( desktop );
return 0;
}
release_object( desktop );
ret = assign_thread_input( thread_from, input );
if (ret) memset( input->keystate, 0, sizeof(input->keystate) );
release_object( input );
return ret;
}
/* detach two thread input data structures */
void detach_thread_input( struct thread *thread_from )
{
struct thread_input *input;
if ((input = create_thread_input( thread_from )))
{
assign_thread_input( thread_from, input );
release_object( input );
}
}
/* set the next timer to expire */
static void set_next_timer( struct msg_queue *queue )
{
struct list *ptr;
if (queue->timeout)
{
remove_timeout_user( queue->timeout );
queue->timeout = NULL;
}
if ((ptr = list_head( &queue->pending_timers )))
{
struct timer *timer = LIST_ENTRY( ptr, struct timer, entry );
queue->timeout = add_timeout_user( timer->when, timer_callback, queue );
}
/* set/clear QS_TIMER bit */
if (list_empty( &queue->expired_timers ))
clear_queue_bits( queue, QS_TIMER );
else
set_queue_bits( queue, QS_TIMER );
}
/* find a timer from its window and id */
static struct timer *find_timer( struct msg_queue *queue, user_handle_t win,
unsigned int msg, lparam_t id )
{
struct list *ptr;
/* we need to search both lists */
LIST_FOR_EACH( ptr, &queue->pending_timers )
{
struct timer *timer = LIST_ENTRY( ptr, struct timer, entry );
if (timer->win == win && timer->msg == msg && timer->id == id) return timer;
}
LIST_FOR_EACH( ptr, &queue->expired_timers )
{
struct timer *timer = LIST_ENTRY( ptr, struct timer, entry );
if (timer->win == win && timer->msg == msg && timer->id == id) return timer;
}
return NULL;
}
/* callback for the next timer expiration */
static void timer_callback( void *private )
{
struct msg_queue *queue = private;
struct list *ptr;
queue->timeout = NULL;
/* move on to the next timer */
ptr = list_head( &queue->pending_timers );
list_remove( ptr );
list_add_tail( &queue->expired_timers, ptr );
set_next_timer( queue );
}
/* link a timer at its rightful place in the queue list */
static void link_timer( struct msg_queue *queue, struct timer *timer )
{
struct list *ptr;
for (ptr = queue->pending_timers.next; ptr != &queue->pending_timers; ptr = ptr->next)
{
struct timer *t = LIST_ENTRY( ptr, struct timer, entry );
if (t->when >= timer->when) break;
}
list_add_before( ptr, &timer->entry );
}
/* remove a timer from the queue timer list and free it */
static void free_timer( struct msg_queue *queue, struct timer *timer )
{
list_remove( &timer->entry );
free( timer );
set_next_timer( queue );
}
/* restart an expired timer */
static void restart_timer( struct msg_queue *queue, struct timer *timer )
{
list_remove( &timer->entry );
while (timer->when <= current_time) timer->when += (timeout_t)timer->rate * 10000;
link_timer( queue, timer );
set_next_timer( queue );
}
/* find an expired timer matching the filtering parameters */
static struct timer *find_expired_timer( struct msg_queue *queue, user_handle_t win,
unsigned int get_first, unsigned int get_last,
int remove )
{
struct list *ptr;
LIST_FOR_EACH( ptr, &queue->expired_timers )
{
struct timer *timer = LIST_ENTRY( ptr, struct timer, entry );
if (win && timer->win != win) continue;
if (check_msg_filter( timer->msg, get_first, get_last ))
{
if (remove) restart_timer( queue, timer );
return timer;
}
}
return NULL;
}
/* add a timer */
static struct timer *set_timer( struct msg_queue *queue, unsigned int rate )
{
struct timer *timer = mem_alloc( sizeof(*timer) );
if (timer)
{
timer->rate = max( rate, 1 );
timer->when = current_time + (timeout_t)timer->rate * 10000;
link_timer( queue, timer );
/* check if we replaced the next timer */
if (list_head( &queue->pending_timers ) == &timer->entry) set_next_timer( queue );
}
return timer;
}
/* change the input key state for a given key */
static void set_input_key_state( unsigned char *keystate, unsigned char key, int down )
{
if (down)
{
if (!(keystate[key] & 0x80)) keystate[key] ^= 0x01;
keystate[key] |= down;
}
else keystate[key] &= ~0x80;
}
/* update the input key state for a keyboard message */
static void update_input_key_state( struct desktop *desktop, unsigned char *keystate,
const struct message *msg )
{
unsigned char key;
int down = 0;
switch (msg->msg)
{
case WM_LBUTTONDOWN:
down = (keystate == desktop->keystate) ? 0xc0 : 0x80;
/* fall through */
case WM_LBUTTONUP:
set_input_key_state( keystate, VK_LBUTTON, down );
break;
case WM_MBUTTONDOWN:
down = (keystate == desktop->keystate) ? 0xc0 : 0x80;
/* fall through */
case WM_MBUTTONUP:
set_input_key_state( keystate, VK_MBUTTON, down );
break;
case WM_RBUTTONDOWN:
down = (keystate == desktop->keystate) ? 0xc0 : 0x80;
/* fall through */
case WM_RBUTTONUP:
set_input_key_state( keystate, VK_RBUTTON, down );
break;
case WM_XBUTTONDOWN:
down = (keystate == desktop->keystate) ? 0xc0 : 0x80;
/* fall through */
case WM_XBUTTONUP:
if (msg->wparam >> 16 == XBUTTON1) set_input_key_state( keystate, VK_XBUTTON1, down );
else if (msg->wparam >> 16 == XBUTTON2) set_input_key_state( keystate, VK_XBUTTON2, down );
break;
case WM_KEYDOWN:
case WM_SYSKEYDOWN:
down = (keystate == desktop->keystate) ? 0xc0 : 0x80;
/* fall through */
case WM_KEYUP:
case WM_SYSKEYUP:
key = (unsigned char)msg->wparam;
set_input_key_state( keystate, key, down );
switch(key)
{
case VK_LCONTROL:
case VK_RCONTROL:
down = (keystate[VK_LCONTROL] | keystate[VK_RCONTROL]) & 0x80;
set_input_key_state( keystate, VK_CONTROL, down );
break;
case VK_LMENU:
case VK_RMENU:
down = (keystate[VK_LMENU] | keystate[VK_RMENU]) & 0x80;
set_input_key_state( keystate, VK_MENU, down );
break;
case VK_LSHIFT:
case VK_RSHIFT:
down = (keystate[VK_LSHIFT] | keystate[VK_RSHIFT]) & 0x80;
set_input_key_state( keystate, VK_SHIFT, down );
break;
}
break;
}
}
/* release the hardware message currently being processed by the given thread */
static void release_hardware_message( struct msg_queue *queue, unsigned int hw_id,
int remove, user_handle_t new_win )
{
struct thread_input *input = queue->input;
struct message *msg;
LIST_FOR_EACH_ENTRY( msg, &input->msg_list, struct message, entry )
{
if (msg->unique_id == hw_id) break;
}
if (&msg->entry == &input->msg_list) return; /* not found */
/* clear the queue bit for that message */
if (remove || new_win)
{
struct message *other;
int clr_bit;
clr_bit = get_hardware_msg_bit( msg );
LIST_FOR_EACH_ENTRY( other, &input->msg_list, struct message, entry )
{
if (other != msg && get_hardware_msg_bit( other ) == clr_bit)
{
clr_bit = 0;
break;
}
}
if (clr_bit) clear_queue_bits( queue, clr_bit );
}
if (new_win) /* set the new window */
{
struct thread *owner = get_window_thread( new_win );
if (owner)
{
msg->win = new_win;
if (owner->queue->input != input)
{
list_remove( &msg->entry );
if (merge_message( owner->queue->input, msg ))
{
free_message( msg );
release_object( owner );
return;
}
list_add_tail( &owner->queue->input->msg_list, &msg->entry );
}
set_queue_bits( owner->queue, get_hardware_msg_bit( msg ));
remove = 0;
release_object( owner );
}
}
if (remove)
{
update_input_key_state( input->desktop, input->keystate, msg );
list_remove( &msg->entry );
free_message( msg );
}
}
static int queue_hotkey_message( struct desktop *desktop, struct message *msg )
{
struct hotkey *hotkey;
unsigned int modifiers = 0;
if (msg->msg != WM_KEYDOWN) return 0;
if (desktop->keystate[VK_MENU] & 0x80) modifiers |= MOD_ALT;
if (desktop->keystate[VK_CONTROL] & 0x80) modifiers |= MOD_CONTROL;
if (desktop->keystate[VK_SHIFT] & 0x80) modifiers |= MOD_SHIFT;
if ((desktop->keystate[VK_LWIN] & 0x80) || (desktop->keystate[VK_RWIN] & 0x80)) modifiers |= MOD_WIN;
LIST_FOR_EACH_ENTRY( hotkey, &desktop->hotkeys, struct hotkey, entry )
{
if (hotkey->vkey != msg->wparam) continue;
if ((hotkey->flags & (MOD_ALT|MOD_CONTROL|MOD_SHIFT|MOD_WIN)) == modifiers) goto found;
}
return 0;
found:
msg->type = MSG_POSTED;
msg->win = hotkey->win;
msg->msg = WM_HOTKEY;
msg->wparam = hotkey->id;
msg->lparam = ((hotkey->vkey & 0xffff) << 16) | modifiers;
free( msg->data );
msg->data = NULL;
msg->data_size = 0;
list_add_tail( &hotkey->queue->msg_list[POST_MESSAGE], &msg->entry );
set_queue_bits( hotkey->queue, QS_POSTMESSAGE|QS_ALLPOSTMESSAGE|QS_HOTKEY );
hotkey->queue->hotkey_count++;
return 1;
}
/* find the window that should receive a given hardware message */
static user_handle_t find_hardware_message_window( struct desktop *desktop, struct thread_input *input,
struct message *msg, unsigned int *msg_code )
{
struct hardware_msg_data *data = msg->data;
user_handle_t win = 0;
*msg_code = msg->msg;
if (is_keyboard_msg( msg ))
{
if (input && !(win = input->focus))
{
win = input->active;
if (*msg_code < WM_SYSKEYDOWN) *msg_code += WM_SYSKEYDOWN - WM_KEYDOWN;
}
}
else /* mouse message */
{
if (!input || !(win = input->capture))
{
if (!(win = msg->win) || !is_window_visible( win ) || is_window_transparent( win ))
win = window_from_point( desktop, data->x, data->y );
}
}
return win;
}
/* queue a hardware message into a given thread input */
static void queue_hardware_message( struct desktop *desktop, struct message *msg, int always_queue )
{
user_handle_t win;
struct thread *thread;
struct thread_input *input;
unsigned int msg_code;
struct hardware_msg_data *data = msg->data;
update_input_key_state( desktop, desktop->keystate, msg );
last_input_time = get_tick_count();
if (msg->msg != WM_MOUSEMOVE) always_queue = 1;
if (is_keyboard_msg( msg ))
{
if (queue_hotkey_message( desktop, msg )) return;
if (desktop->keystate[VK_MENU] & 0x80) msg->lparam |= KF_ALTDOWN << 16;
if (msg->wparam == VK_SHIFT || msg->wparam == VK_LSHIFT || msg->wparam == VK_RSHIFT)
msg->lparam &= ~(KF_EXTENDED << 16);
}
else
{
if (msg->msg == WM_MOUSEMOVE)
{
int x = min( max( data->x, desktop->cursor.clip.left ), desktop->cursor.clip.right-1 );
int y = min( max( data->y, desktop->cursor.clip.top ), desktop->cursor.clip.bottom-1 );
if (desktop->cursor.x != x || desktop->cursor.y != y) always_queue = 1;
desktop->cursor.x = x;
desktop->cursor.y = y;
desktop->cursor.last_change = get_tick_count();
}
if (desktop->keystate[VK_LBUTTON] & 0x80) msg->wparam |= MK_LBUTTON;
if (desktop->keystate[VK_MBUTTON] & 0x80) msg->wparam |= MK_MBUTTON;
if (desktop->keystate[VK_RBUTTON] & 0x80) msg->wparam |= MK_RBUTTON;
if (desktop->keystate[VK_SHIFT] & 0x80) msg->wparam |= MK_SHIFT;
if (desktop->keystate[VK_CONTROL] & 0x80) msg->wparam |= MK_CONTROL;
if (desktop->keystate[VK_XBUTTON1] & 0x80) msg->wparam |= MK_XBUTTON1;
if (desktop->keystate[VK_XBUTTON2] & 0x80) msg->wparam |= MK_XBUTTON2;
}
data->x = desktop->cursor.x;
data->y = desktop->cursor.y;
if (msg->win && (thread = get_window_thread( msg->win )))
{
input = thread->queue->input;
release_object( thread );
}
else input = desktop->foreground_input;
win = find_hardware_message_window( desktop, input, msg, &msg_code );
if (!win || !(thread = get_window_thread(win)))
{
if (input) update_input_key_state( input->desktop, input->keystate, msg );
free_message( msg );
return;
}
input = thread->queue->input;
if (win != desktop->cursor.win) always_queue = 1;
desktop->cursor.win = win;
if (!always_queue || merge_message( input, msg )) free_message( msg );
else
{
msg->unique_id = 0; /* will be set once we return it to the app */
list_add_tail( &input->msg_list, &msg->entry );
set_queue_bits( thread->queue, get_hardware_msg_bit(msg) );
}
release_object( thread );
}
/* send the low-level hook message for a given hardware message */
static int send_hook_ll_message( struct desktop *desktop, struct message *hardware_msg,
const hw_input_t *input, struct msg_queue *sender )
{
struct thread *hook_thread;
struct msg_queue *queue;
struct message *msg;
timeout_t timeout = 2000 * -10000; /* FIXME: load from registry */
int id = (input->type == INPUT_MOUSE) ? WH_MOUSE_LL : WH_KEYBOARD_LL;
if (!(hook_thread = get_first_global_hook( id ))) return 0;
if (!(queue = hook_thread->queue)) return 0;
if (is_queue_hung( queue )) return 0;
if (!(msg = mem_alloc( sizeof(*msg) ))) return 0;
msg->type = MSG_HOOK_LL;
msg->win = 0;
msg->msg = id;
msg->wparam = hardware_msg->msg;
msg->time = hardware_msg->time;
msg->data_size = hardware_msg->data_size;
msg->result = NULL;
if (input->type == INPUT_KEYBOARD)
{
unsigned short vkey = input->kbd.vkey;
if (input->kbd.flags & KEYEVENTF_UNICODE) vkey = VK_PACKET;
msg->lparam = (input->kbd.scan << 16) | vkey;
}
else msg->lparam = input->mouse.data << 16;
if (!(msg->data = memdup( hardware_msg->data, hardware_msg->data_size )) ||
!(msg->result = alloc_message_result( sender, queue, msg, timeout )))
{
free_message( msg );
return 0;
}
msg->result->hardware_msg = hardware_msg;
msg->result->desktop = (struct desktop *)grab_object( desktop );
list_add_tail( &queue->msg_list[SEND_MESSAGE], &msg->entry );
set_queue_bits( queue, QS_SENDMESSAGE );
return 1;
}
/* queue a hardware message for a mouse event */
static int queue_mouse_message( struct desktop *desktop, user_handle_t win, const hw_input_t *input,
unsigned int hook_flags, struct msg_queue *sender )
{
struct hardware_msg_data *msg_data;
struct message *msg;
unsigned int i, time, flags;
int wait = 0, x, y;
static const unsigned int messages[] =
{
WM_MOUSEMOVE, /* 0x0001 = MOUSEEVENTF_MOVE */
WM_LBUTTONDOWN, /* 0x0002 = MOUSEEVENTF_LEFTDOWN */
WM_LBUTTONUP, /* 0x0004 = MOUSEEVENTF_LEFTUP */
WM_RBUTTONDOWN, /* 0x0008 = MOUSEEVENTF_RIGHTDOWN */
WM_RBUTTONUP, /* 0x0010 = MOUSEEVENTF_RIGHTUP */
WM_MBUTTONDOWN, /* 0x0020 = MOUSEEVENTF_MIDDLEDOWN */
WM_MBUTTONUP, /* 0x0040 = MOUSEEVENTF_MIDDLEUP */
WM_XBUTTONDOWN, /* 0x0080 = MOUSEEVENTF_XDOWN */
WM_XBUTTONUP, /* 0x0100 = MOUSEEVENTF_XUP */
0, /* 0x0200 = unused */
0, /* 0x0400 = unused */
WM_MOUSEWHEEL, /* 0x0800 = MOUSEEVENTF_WHEEL */
WM_MOUSEHWHEEL /* 0x1000 = MOUSEEVENTF_HWHEEL */
};
desktop->cursor.last_change = get_tick_count();
flags = input->mouse.flags;
time = input->mouse.time;
if (!time) time = desktop->cursor.last_change;
if (flags & MOUSEEVENTF_MOVE)
{
if (flags & MOUSEEVENTF_ABSOLUTE)
{
x = input->mouse.x;
y = input->mouse.y;
if (flags & ~(MOUSEEVENTF_MOVE | MOUSEEVENTF_ABSOLUTE) &&
x == desktop->cursor.x && y == desktop->cursor.y)
flags &= ~MOUSEEVENTF_MOVE;
}
else
{
x = desktop->cursor.x + input->mouse.x;
y = desktop->cursor.y + input->mouse.y;
}
}
else
{
x = desktop->cursor.x;
y = desktop->cursor.y;
}
for (i = 0; i < sizeof(messages)/sizeof(messages[0]); i++)
{
if (!messages[i]) continue;
if (!(flags & (1 << i))) continue;
flags &= ~(1 << i);
if (!(msg = mem_alloc( sizeof(*msg) ))) return 0;
if (!(msg_data = mem_alloc( sizeof(*msg_data) )))
{
free( msg );
return 0;
}
memset( msg_data, 0, sizeof(*msg_data) );
msg->type = MSG_HARDWARE;
msg->win = get_user_full_handle( win );
msg->msg = messages[i];
msg->wparam = input->mouse.data << 16;
msg->lparam = 0;
msg->time = time;
msg->result = NULL;
msg->data = msg_data;
msg->data_size = sizeof(*msg_data);
msg_data->x = x;
msg_data->y = y;
msg_data->info = input->mouse.info;
if (hook_flags & SEND_HWMSG_INJECTED) msg_data->flags = LLMHF_INJECTED;
/* specify a sender only when sending the last message */
if (!(flags & ((1 << sizeof(messages)/sizeof(messages[0])) - 1)))
{
if (!(wait = send_hook_ll_message( desktop, msg, input, sender )))
queue_hardware_message( desktop, msg, 0 );
}
else if (!send_hook_ll_message( desktop, msg, input, NULL ))
queue_hardware_message( desktop, msg, 0 );
}
return wait;
}
/* queue a hardware message for a keyboard event */
static int queue_keyboard_message( struct desktop *desktop, user_handle_t win, const hw_input_t *input,
unsigned int hook_flags, struct msg_queue *sender )
{
struct hardware_msg_data *msg_data;
struct message *msg;
unsigned char vkey = input->kbd.vkey;
int wait;
if (!(msg = mem_alloc( sizeof(*msg) ))) return 0;
if (!(msg_data = mem_alloc( sizeof(*msg_data) )))
{
free( msg );
return 0;
}
memset( msg_data, 0, sizeof(*msg_data) );
msg->type = MSG_HARDWARE;
msg->win = get_user_full_handle( win );
msg->lparam = (input->kbd.scan << 16) | 1u; /* repeat count */
msg->time = input->kbd.time;
msg->result = NULL;
msg->data = msg_data;
msg->data_size = sizeof(*msg_data);
msg_data->info = input->kbd.info;
if (!msg->time) msg->time = get_tick_count();
if (hook_flags & SEND_HWMSG_INJECTED) msg_data->flags = LLKHF_INJECTED;
if (input->kbd.flags & KEYEVENTF_UNICODE)
{
msg->wparam = VK_PACKET;
}
else
{
unsigned int flags = 0;
switch (vkey)
{
case VK_MENU:
case VK_LMENU:
case VK_RMENU:
vkey = (input->kbd.flags & KEYEVENTF_EXTENDEDKEY) ? VK_RMENU : VK_LMENU;
break;
case VK_CONTROL:
case VK_LCONTROL:
case VK_RCONTROL:
vkey = (input->kbd.flags & KEYEVENTF_EXTENDEDKEY) ? VK_RCONTROL : VK_LCONTROL;
break;
case VK_SHIFT:
case VK_LSHIFT:
case VK_RSHIFT:
vkey = (input->kbd.flags & KEYEVENTF_EXTENDEDKEY) ? VK_RSHIFT : VK_LSHIFT;
break;
}
if (input->kbd.flags & KEYEVENTF_EXTENDEDKEY) flags |= KF_EXTENDED;
/* FIXME: set KF_DLGMODE and KF_MENUMODE when needed */
if (input->kbd.flags & KEYEVENTF_KEYUP) flags |= KF_REPEAT | KF_UP;
else if (desktop->keystate[vkey] & 0x80) flags |= KF_REPEAT;
msg->wparam = vkey;
msg->lparam |= flags << 16;
msg_data->flags |= (flags & (KF_EXTENDED | KF_ALTDOWN | KF_UP)) >> 8;
}
msg->msg = (input->kbd.flags & KEYEVENTF_KEYUP) ? WM_KEYUP : WM_KEYDOWN;
switch (vkey)
{
case VK_LMENU:
case VK_RMENU:
if (input->kbd.flags & KEYEVENTF_KEYUP)
{
/* send WM_SYSKEYUP if Alt still pressed and no other key in between */
/* we use 0x02 as a flag to track if some other SYSKEYUP was sent already */
if ((desktop->keystate[VK_MENU] & 0x82) != 0x82) break;
msg->msg = WM_SYSKEYUP;
desktop->keystate[VK_MENU] &= ~0x02;
}
else
{
/* send WM_SYSKEYDOWN for Alt except with Ctrl */
if (desktop->keystate[VK_CONTROL] & 0x80) break;
msg->msg = WM_SYSKEYDOWN;
desktop->keystate[VK_MENU] |= 0x02;
}
break;
case VK_LCONTROL:
case VK_RCONTROL:
/* send WM_SYSKEYUP on release if Alt still pressed */
if (!(input->kbd.flags & KEYEVENTF_KEYUP)) break;
if (!(desktop->keystate[VK_MENU] & 0x80)) break;
msg->msg = WM_SYSKEYUP;
desktop->keystate[VK_MENU] &= ~0x02;
break;
default:
/* send WM_SYSKEY for Alt-anykey and for F10 */
if (desktop->keystate[VK_CONTROL] & 0x80) break;
if (!(desktop->keystate[VK_MENU] & 0x80)) break;
/* fall through */
case VK_F10:
msg->msg = (input->kbd.flags & KEYEVENTF_KEYUP) ? WM_SYSKEYUP : WM_SYSKEYDOWN;
desktop->keystate[VK_MENU] &= ~0x02;
break;
}
if (!(wait = send_hook_ll_message( desktop, msg, input, sender )))
queue_hardware_message( desktop, msg, 1 );
return wait;
}
/* queue a hardware message for a custom type of event */
static void queue_custom_hardware_message( struct desktop *desktop, user_handle_t win,
const hw_input_t *input )
{
struct hardware_msg_data *msg_data;
struct message *msg;
if (!(msg = mem_alloc( sizeof(*msg) ))) return;
if (!(msg_data = mem_alloc( sizeof(*msg_data) )))
{
free( msg );
return;
}
memset( msg_data, 0, sizeof(*msg_data) );
msg->type = MSG_HARDWARE;
msg->win = get_user_full_handle( win );
msg->msg = input->hw.msg;
msg->wparam = 0;
msg->lparam = input->hw.lparam;
msg->time = get_tick_count();
msg->result = NULL;
msg->data = msg_data;
msg->data_size = sizeof(*msg_data);
queue_hardware_message( desktop, msg, 1 );
}
/* check message filter for a hardware message */
static int check_hw_message_filter( user_handle_t win, unsigned int msg_code,
user_handle_t filter_win, unsigned int first, unsigned int last )
{
if (msg_code >= WM_KEYFIRST && msg_code <= WM_KEYLAST)
{
/* we can only test the window for a keyboard message since the
* dest window for a mouse message depends on hittest */
if (filter_win && win != filter_win && !is_child_window( filter_win, win ))
return 0;
/* the message code is final for a keyboard message, we can simply check it */
return check_msg_filter( msg_code, first, last );
}
else /* mouse message */
{
/* we need to check all possible values that the message can have in the end */
if (check_msg_filter( msg_code, first, last )) return 1;
if (msg_code == WM_MOUSEWHEEL) return 0; /* no other possible value for this one */
/* all other messages can become non-client messages */
if (check_msg_filter( msg_code + (WM_NCMOUSEFIRST - WM_MOUSEFIRST), first, last )) return 1;
/* clicks can become double-clicks or non-client double-clicks */
if (msg_code == WM_LBUTTONDOWN || msg_code == WM_MBUTTONDOWN ||
msg_code == WM_RBUTTONDOWN || msg_code == WM_XBUTTONDOWN)
{
if (check_msg_filter( msg_code + (WM_LBUTTONDBLCLK - WM_LBUTTONDOWN), first, last )) return 1;
if (check_msg_filter( msg_code + (WM_NCLBUTTONDBLCLK - WM_LBUTTONDOWN), first, last )) return 1;
}
return 0;
}
}
/* find a hardware message for the given queue */
static int get_hardware_message( struct thread *thread, unsigned int hw_id, user_handle_t filter_win,
unsigned int first, unsigned int last, struct get_message_reply *reply )
{
struct thread_input *input = thread->queue->input;
struct thread *win_thread;
struct list *ptr;
user_handle_t win;
int clear_bits, got_one = 0;
unsigned int msg_code;
ptr = list_head( &input->msg_list );
if (hw_id)
{
while (ptr)
{
struct message *msg = LIST_ENTRY( ptr, struct message, entry );
if (msg->unique_id == hw_id) break;
ptr = list_next( &input->msg_list, ptr );
}
if (!ptr) ptr = list_head( &input->msg_list );
else ptr = list_next( &input->msg_list, ptr ); /* start from the next one */
}
if (ptr == list_head( &input->msg_list ))
clear_bits = QS_KEY | QS_MOUSEMOVE | QS_MOUSEBUTTON;
else
clear_bits = 0; /* don't clear bits if we don't go through the whole list */
while (ptr)
{
struct message *msg = LIST_ENTRY( ptr, struct message, entry );
struct hardware_msg_data *data = msg->data;
ptr = list_next( &input->msg_list, ptr );
win = find_hardware_message_window( input->desktop, input, msg, &msg_code );
if (!win || !(win_thread = get_window_thread( win )))
{
/* no window at all, remove it */
update_input_key_state( input->desktop, input->keystate, msg );
list_remove( &msg->entry );
free_message( msg );
continue;
}
if (win_thread != thread)
{
if (win_thread->queue->input == input)
{
/* wake the other thread */
set_queue_bits( win_thread->queue, get_hardware_msg_bit(msg) );
got_one = 1;
}
else
{
/* for another thread input, drop it */
update_input_key_state( input->desktop, input->keystate, msg );
list_remove( &msg->entry );
free_message( msg );
}
release_object( win_thread );
continue;
}
release_object( win_thread );
/* if we already got a message for another thread, or if it doesn't
* match the filter we skip it */
if (got_one || !check_hw_message_filter( win, msg_code, filter_win, first, last ))
{
clear_bits &= ~get_hardware_msg_bit( msg );
continue;
}
/* now we can return it */
if (!msg->unique_id) msg->unique_id = get_unique_id();
reply->type = MSG_HARDWARE;
reply->win = win;
reply->msg = msg_code;
reply->wparam = msg->wparam;
reply->lparam = msg->lparam;
reply->time = msg->time;
data->hw_id = msg->unique_id;
set_reply_data( msg->data, msg->data_size );
return 1;
}
/* nothing found, clear the hardware queue bits */
clear_queue_bits( thread->queue, clear_bits );
return 0;
}
/* increment (or decrement if 'incr' is negative) the queue paint count */
void inc_queue_paint_count( struct thread *thread, int incr )
{
struct msg_queue *queue = thread->queue;
assert( queue );
if ((queue->paint_count += incr) < 0) queue->paint_count = 0;
if (queue->paint_count)
set_queue_bits( queue, QS_PAINT );
else
clear_queue_bits( queue, QS_PAINT );
}
/* remove all messages and timers belonging to a certain window */
void queue_cleanup_window( struct thread *thread, user_handle_t win )
{
struct msg_queue *queue = thread->queue;
struct list *ptr;
int i;
if (!queue) return;
/* remove timers */
ptr = list_head( &queue->pending_timers );
while (ptr)
{
struct list *next = list_next( &queue->pending_timers, ptr );
struct timer *timer = LIST_ENTRY( ptr, struct timer, entry );
if (timer->win == win) free_timer( queue, timer );
ptr = next;
}
ptr = list_head( &queue->expired_timers );
while (ptr)
{
struct list *next = list_next( &queue->expired_timers, ptr );
struct timer *timer = LIST_ENTRY( ptr, struct timer, entry );
if (timer->win == win) free_timer( queue, timer );
ptr = next;
}
/* remove messages */
for (i = 0; i < NB_MSG_KINDS; i++)
{
struct list *ptr, *next;
LIST_FOR_EACH_SAFE( ptr, next, &queue->msg_list[i] )
{
struct message *msg = LIST_ENTRY( ptr, struct message, entry );
if (msg->win == win)
{
if (msg->msg == WM_QUIT && !queue->quit_message)
{
queue->quit_message = 1;
queue->exit_code = msg->wparam;
}
remove_queue_message( queue, msg, i );
}
}
}
thread_input_cleanup_window( queue, win );
}
/* post a message to a window; used by socket handling */
void post_message( user_handle_t win, unsigned int message, lparam_t wparam, lparam_t lparam )
{
struct message *msg;
struct thread *thread = get_window_thread( win );
if (!thread) return;
if (thread->queue && (msg = mem_alloc( sizeof(*msg) )))
{
msg->type = MSG_POSTED;
msg->win = get_user_full_handle( win );
msg->msg = message;
msg->wparam = wparam;
msg->lparam = lparam;
msg->time = get_tick_count();
msg->result = NULL;
msg->data = NULL;
msg->data_size = 0;
list_add_tail( &thread->queue->msg_list[POST_MESSAGE], &msg->entry );
set_queue_bits( thread->queue, QS_POSTMESSAGE|QS_ALLPOSTMESSAGE );
if (message == WM_HOTKEY)
{
set_queue_bits( thread->queue, QS_HOTKEY );
thread->queue->hotkey_count++;
}
}
release_object( thread );
}
/* post a win event */
void post_win_event( struct thread *thread, unsigned int event,
user_handle_t win, unsigned int object_id,
unsigned int child_id, client_ptr_t hook_proc,
const WCHAR *module, data_size_t module_size,
user_handle_t hook)
{
struct message *msg;
if (thread->queue && (msg = mem_alloc( sizeof(*msg) )))
{
struct winevent_msg_data *data;
msg->type = MSG_WINEVENT;
msg->win = get_user_full_handle( win );
msg->msg = event;
msg->wparam = object_id;
msg->lparam = child_id;
msg->time = get_tick_count();
msg->result = NULL;
if ((data = malloc( sizeof(*data) + module_size )))
{
data->hook = hook;
data->tid = get_thread_id( current );
data->hook_proc = hook_proc;
memcpy( data + 1, module, module_size );
msg->data = data;
msg->data_size = sizeof(*data) + module_size;
if (debug_level > 1)
fprintf( stderr, "post_win_event: tid %04x event %04x win %08x object_id %d child_id %d\n",
get_thread_id(thread), event, win, object_id, child_id );
list_add_tail( &thread->queue->msg_list[SEND_MESSAGE], &msg->entry );
set_queue_bits( thread->queue, QS_SENDMESSAGE );
}
else
free( msg );
}
}
/* free all hotkeys on a desktop, optionally filtering by window */
void free_hotkeys( struct desktop *desktop, user_handle_t window )
{
struct hotkey *hotkey, *hotkey2;
LIST_FOR_EACH_ENTRY_SAFE( hotkey, hotkey2, &desktop->hotkeys, struct hotkey, entry )
{
if (!window || hotkey->win == window)
{
list_remove( &hotkey->entry );
free( hotkey );
}
}
}
/* check if the thread owning the window is hung */
DECL_HANDLER(is_window_hung)
{
struct thread *thread;
thread = get_window_thread( req->win );
if (thread)
{
reply->is_hung = is_queue_hung( thread->queue );
release_object( thread );
}
else reply->is_hung = 0;
}
/* get the message queue of the current thread */
DECL_HANDLER(get_msg_queue)
{
struct msg_queue *queue = get_current_queue();
reply->handle = 0;
if (queue) reply->handle = alloc_handle( current->process, queue, SYNCHRONIZE, 0 );
}
/* set the file descriptor associated to the current thread queue */
DECL_HANDLER(set_queue_fd)
{
struct msg_queue *queue = get_current_queue();
struct file *file;
int unix_fd;
if (queue->fd) /* fd can only be set once */
{
set_error( STATUS_ACCESS_DENIED );
return;
}
if (!(file = get_file_obj( current->process, req->handle, SYNCHRONIZE ))) return;
if ((unix_fd = get_file_unix_fd( file )) != -1)
{
if ((unix_fd = dup( unix_fd )) != -1)
queue->fd = create_anonymous_fd( &msg_queue_fd_ops, unix_fd, &queue->obj, 0 );
else
file_set_error();
}
release_object( file );
}
/* set the current message queue wakeup mask */
DECL_HANDLER(set_queue_mask)
{
struct msg_queue *queue = get_current_queue();
if (queue)
{
queue->wake_mask = req->wake_mask;
queue->changed_mask = req->changed_mask;
reply->wake_bits = queue->wake_bits;
reply->changed_bits = queue->changed_bits;
if (is_signaled( queue ))
{
/* if skip wait is set, do what would have been done in the subsequent wait */
if (req->skip_wait) msg_queue_satisfied( &queue->obj, current );
else wake_up( &queue->obj, 0 );
}
}
}
/* get the current message queue status */
DECL_HANDLER(get_queue_status)
{
struct msg_queue *queue = current->queue;
if (queue)
{
reply->wake_bits = queue->wake_bits;
reply->changed_bits = queue->changed_bits;
if (req->clear) queue->changed_bits = 0;
}
else reply->wake_bits = reply->changed_bits = 0;
}
/* send a message to a thread queue */
DECL_HANDLER(send_message)
{
struct message *msg;
struct msg_queue *send_queue = get_current_queue();
struct msg_queue *recv_queue = NULL;
struct thread *thread = NULL;
if (!(thread = get_thread_from_id( req->id ))) return;
if (!(recv_queue = thread->queue))
{
set_error( STATUS_INVALID_PARAMETER );
release_object( thread );
return;
}
if ((req->flags & SEND_MSG_ABORT_IF_HUNG) && is_queue_hung(recv_queue))
{
set_error( STATUS_TIMEOUT );
release_object( thread );
return;
}
if ((msg = mem_alloc( sizeof(*msg) )))
{
msg->type = req->type;
msg->win = get_user_full_handle( req->win );
msg->msg = req->msg;
msg->wparam = req->wparam;
msg->lparam = req->lparam;
msg->time = get_tick_count();
msg->result = NULL;
msg->data = NULL;
msg->data_size = get_req_data_size();
if (msg->data_size && !(msg->data = memdup( get_req_data(), msg->data_size )))
{
free( msg );
release_object( thread );
return;
}
switch(msg->type)
{
case MSG_OTHER_PROCESS:
case MSG_ASCII:
case MSG_UNICODE:
case MSG_CALLBACK:
if (!(msg->result = alloc_message_result( send_queue, recv_queue, msg, req->timeout )))
{
free_message( msg );
break;
}
/* fall through */
case MSG_NOTIFY:
list_add_tail( &recv_queue->msg_list[SEND_MESSAGE], &msg->entry );
set_queue_bits( recv_queue, QS_SENDMESSAGE );
break;
case MSG_POSTED:
list_add_tail( &recv_queue->msg_list[POST_MESSAGE], &msg->entry );
set_queue_bits( recv_queue, QS_POSTMESSAGE|QS_ALLPOSTMESSAGE );
if (msg->msg == WM_HOTKEY)
{
set_queue_bits( recv_queue, QS_HOTKEY );
recv_queue->hotkey_count++;
}
break;
case MSG_HARDWARE: /* should use send_hardware_message instead */
case MSG_CALLBACK_RESULT: /* cannot send this one */
case MSG_HOOK_LL: /* generated internally */
default:
set_error( STATUS_INVALID_PARAMETER );
free( msg );
break;
}
}
release_object( thread );
}
/* send a hardware message to a thread queue */
DECL_HANDLER(send_hardware_message)
{
struct thread *thread = NULL;
struct desktop *desktop;
struct msg_queue *sender = get_current_queue();
data_size_t size = min( 256, get_reply_max_size() );
if (!(desktop = get_thread_desktop( current, 0 ))) return;
if (req->win)
{
if (!(thread = get_window_thread( req->win ))) return;
if (desktop != thread->queue->input->desktop)
{
/* don't allow queuing events to a different desktop */
release_object( desktop );
return;
}
}
switch (req->input.type)
{
case INPUT_MOUSE:
reply->wait = queue_mouse_message( desktop, req->win, &req->input, req->flags, sender );
break;
case INPUT_KEYBOARD:
reply->wait = queue_keyboard_message( desktop, req->win, &req->input, req->flags, sender );
break;
case INPUT_HARDWARE:
queue_custom_hardware_message( desktop, req->win, &req->input );
break;
default:
set_error( STATUS_INVALID_PARAMETER );
}
if (thread) release_object( thread );
set_reply_data( desktop->keystate, size );
release_object( desktop );
}
/* post a quit message to the current queue */
DECL_HANDLER(post_quit_message)
{
struct msg_queue *queue = get_current_queue();
if (!queue)
return;
queue->quit_message = 1;
queue->exit_code = req->exit_code;
set_queue_bits( queue, QS_POSTMESSAGE|QS_ALLPOSTMESSAGE );
}
/* get a message from the current queue */
DECL_HANDLER(get_message)
{
struct timer *timer;
struct list *ptr;
struct msg_queue *queue = get_current_queue();
user_handle_t get_win = get_user_full_handle( req->get_win );
unsigned int filter = req->flags >> 16;
reply->active_hooks = get_active_hooks();
if (!queue) return;
queue->last_get_msg = current_time;
if (!filter) filter = QS_ALLINPUT;
/* first check for sent messages */
if ((ptr = list_head( &queue->msg_list[SEND_MESSAGE] )))
{
struct message *msg = LIST_ENTRY( ptr, struct message, entry );
receive_message( queue, msg, reply );
return;
}
/* clear changed bits so we can wait on them if we don't find a message */
if (filter & QS_POSTMESSAGE)
{
queue->changed_bits &= ~(QS_POSTMESSAGE | QS_HOTKEY | QS_TIMER);
if (req->get_first == 0 && req->get_last == ~0U) queue->changed_bits &= ~QS_ALLPOSTMESSAGE;
}
if (filter & QS_INPUT) queue->changed_bits &= ~QS_INPUT;
if (filter & QS_PAINT) queue->changed_bits &= ~QS_PAINT;
/* then check for posted messages */
if ((filter & QS_POSTMESSAGE) &&
get_posted_message( queue, get_win, req->get_first, req->get_last, req->flags, reply ))
return;
if ((filter & QS_HOTKEY) && queue->hotkey_count &&
req->get_first <= WM_HOTKEY && req->get_last >= WM_HOTKEY &&
get_posted_message( queue, get_win, WM_HOTKEY, WM_HOTKEY, req->flags, reply ))
return;
/* only check for quit messages if not posted messages pending.
* note: the quit message isn't filtered */
if (get_quit_message( queue, req->flags, reply ))
return;
/* then check for any raw hardware message */
if ((filter & QS_INPUT) &&
filter_contains_hw_range( req->get_first, req->get_last ) &&
get_hardware_message( current, req->hw_id, get_win, req->get_first, req->get_last, reply ))
return;
/* now check for WM_PAINT */
if ((filter & QS_PAINT) &&
queue->paint_count &&
check_msg_filter( WM_PAINT, req->get_first, req->get_last ) &&
(reply->win = find_window_to_repaint( get_win, current )))
{
reply->type = MSG_POSTED;
reply->msg = WM_PAINT;
reply->wparam = 0;
reply->lparam = 0;
reply->time = get_tick_count();
return;
}
/* now check for timer */
if ((filter & QS_TIMER) &&
(timer = find_expired_timer( queue, get_win, req->get_first,
req->get_last, (req->flags & PM_REMOVE) )))
{
reply->type = MSG_POSTED;
reply->win = timer->win;
reply->msg = timer->msg;
reply->wparam = timer->id;
reply->lparam = timer->lparam;
reply->time = get_tick_count();
if (!(req->flags & PM_NOYIELD) && current->process->idle_event)
set_event( current->process->idle_event );
return;
}
if (get_win == -1 && current->process->idle_event) set_event( current->process->idle_event );
queue->wake_mask = req->wake_mask;
queue->changed_mask = req->changed_mask;
set_error( STATUS_PENDING ); /* FIXME */
}
/* reply to a sent message */
DECL_HANDLER(reply_message)
{
if (!current->queue) set_error( STATUS_ACCESS_DENIED );
else if (current->queue->recv_result)
reply_message( current->queue, req->result, 0, req->remove,
get_req_data(), get_req_data_size() );
}
/* accept the current hardware message */
DECL_HANDLER(accept_hardware_message)
{
if (current->queue)
release_hardware_message( current->queue, req->hw_id, req->remove, req->new_win );
else
set_error( STATUS_ACCESS_DENIED );
}
/* retrieve the reply for the last message sent */
DECL_HANDLER(get_message_reply)
{
struct message_result *result;
struct list *entry;
struct msg_queue *queue = current->queue;
if (queue)
{
set_error( STATUS_PENDING );
reply->result = 0;
if (!(entry = list_head( &queue->send_result ))) return; /* no reply ready */
result = LIST_ENTRY( entry, struct message_result, sender_entry );
if (result->replied || req->cancel)
{
if (result->replied)
{
reply->result = result->result;
set_error( result->error );
if (result->data)
{
data_size_t data_len = min( result->data_size, get_reply_max_size() );
set_reply_data_ptr( result->data, data_len );
result->data = NULL;
result->data_size = 0;
}
}
remove_result_from_sender( result );
entry = list_head( &queue->send_result );
if (!entry) clear_queue_bits( queue, QS_SMRESULT );
else
{
result = LIST_ENTRY( entry, struct message_result, sender_entry );
if (!result->replied) clear_queue_bits( queue, QS_SMRESULT );
}
}
}
else set_error( STATUS_ACCESS_DENIED );
}
/* set a window timer */
DECL_HANDLER(set_win_timer)
{
struct timer *timer;
struct msg_queue *queue;
struct thread *thread = NULL;
user_handle_t win = 0;
lparam_t id = req->id;
if (req->win)
{
if (!(win = get_user_full_handle( req->win )) || !(thread = get_window_thread( win )))
{
set_error( STATUS_INVALID_HANDLE );
return;
}
if (thread->process != current->process)
{
release_object( thread );
set_error( STATUS_ACCESS_DENIED );
return;
}
queue = thread->queue;
/* remove it if it existed already */
if ((timer = find_timer( queue, win, req->msg, id ))) free_timer( queue, timer );
}
else
{
queue = get_current_queue();
/* look for a timer with this id */
if (id && (timer = find_timer( queue, 0, req->msg, id )))
{
/* free and reuse id */
free_timer( queue, timer );
}
else
{
/* find a free id for it */
do
{
id = queue->next_timer_id;
if (--queue->next_timer_id <= 0x100) queue->next_timer_id = 0x7fff;
}
while (find_timer( queue, 0, req->msg, id ));
}
}
if ((timer = set_timer( queue, req->rate )))
{
timer->win = win;
timer->msg = req->msg;
timer->id = id;
timer->lparam = req->lparam;
reply->id = id;
}
if (thread) release_object( thread );
}
/* kill a window timer */
DECL_HANDLER(kill_win_timer)
{
struct timer *timer;
struct thread *thread;
user_handle_t win = 0;
if (req->win)
{
if (!(win = get_user_full_handle( req->win )) || !(thread = get_window_thread( win )))
{
set_error( STATUS_INVALID_HANDLE );
return;
}
if (thread->process != current->process)
{
release_object( thread );
set_error( STATUS_ACCESS_DENIED );
return;
}
}
else thread = (struct thread *)grab_object( current );
if (thread->queue && (timer = find_timer( thread->queue, win, req->msg, req->id )))
free_timer( thread->queue, timer );
else
set_error( STATUS_INVALID_PARAMETER );
release_object( thread );
}
DECL_HANDLER(register_hotkey)
{
struct desktop *desktop;
user_handle_t win_handle = req->window;
struct hotkey *hotkey;
struct hotkey *new_hotkey = NULL;
struct thread *thread;
const int modifier_flags = MOD_ALT|MOD_CONTROL|MOD_SHIFT|MOD_WIN;
if (!(desktop = get_thread_desktop( current, 0 ))) return;
if (win_handle)
{
if (!get_user_object_handle( &win_handle, USER_WINDOW ))
{
release_object( desktop );
set_win32_error( ERROR_INVALID_WINDOW_HANDLE );
return;
}
thread = get_window_thread( win_handle );
if (thread) release_object( thread );
if (thread != current)
{
release_object( desktop );
set_win32_error( ERROR_WINDOW_OF_OTHER_THREAD );
return;
}
}
LIST_FOR_EACH_ENTRY( hotkey, &desktop->hotkeys, struct hotkey, entry )
{
if (req->vkey == hotkey->vkey &&
(req->flags & modifier_flags) == (hotkey->flags & modifier_flags))
{
release_object( desktop );
set_win32_error( ERROR_HOTKEY_ALREADY_REGISTERED );
return;
}
if (current->queue == hotkey->queue && win_handle == hotkey->win && req->id == hotkey->id)
new_hotkey = hotkey;
}
if (new_hotkey)
{
reply->replaced = 1;
reply->flags = new_hotkey->flags;
reply->vkey = new_hotkey->vkey;
}
else
{
new_hotkey = mem_alloc( sizeof(*new_hotkey) );
if (new_hotkey)
{
list_add_tail( &desktop->hotkeys, &new_hotkey->entry );
new_hotkey->queue = current->queue;
new_hotkey->win = win_handle;
new_hotkey->id = req->id;
}
}
if (new_hotkey)
{
new_hotkey->flags = req->flags;
new_hotkey->vkey = req->vkey;
}
release_object( desktop );
}
DECL_HANDLER(unregister_hotkey)
{
struct desktop *desktop;
user_handle_t win_handle = req->window;
struct hotkey *hotkey;
struct thread *thread;
if (!(desktop = get_thread_desktop( current, 0 ))) return;
if (win_handle)
{
if (!get_user_object_handle( &win_handle, USER_WINDOW ))
{
release_object( desktop );
set_win32_error( ERROR_INVALID_WINDOW_HANDLE );
return;
}
thread = get_window_thread( win_handle );
if (thread) release_object( thread );
if (thread != current)
{
release_object( desktop );
set_win32_error( ERROR_WINDOW_OF_OTHER_THREAD );
return;
}
}
LIST_FOR_EACH_ENTRY( hotkey, &desktop->hotkeys, struct hotkey, entry )
{
if (current->queue == hotkey->queue && win_handle == hotkey->win && req->id == hotkey->id)
goto found;
}
release_object( desktop );
set_win32_error( ERROR_HOTKEY_NOT_REGISTERED );
return;
found:
reply->flags = hotkey->flags;
reply->vkey = hotkey->vkey;
list_remove( &hotkey->entry );
free( hotkey );
release_object( desktop );
}
/* attach (or detach) thread inputs */
DECL_HANDLER(attach_thread_input)
{
struct thread *thread_from = get_thread_from_id( req->tid_from );
struct thread *thread_to = get_thread_from_id( req->tid_to );
if (!thread_from || !thread_to)
{
if (thread_from) release_object( thread_from );
if (thread_to) release_object( thread_to );
return;
}
if (thread_from != thread_to)
{
if (req->attach) attach_thread_input( thread_from, thread_to );
else
{
if (thread_from->queue && thread_to->queue &&
thread_from->queue->input == thread_to->queue->input)
detach_thread_input( thread_from );
else
set_error( STATUS_ACCESS_DENIED );
}
}
else set_error( STATUS_ACCESS_DENIED );
release_object( thread_from );
release_object( thread_to );
}
/* get thread input data */
DECL_HANDLER(get_thread_input)
{
struct thread *thread = NULL;
struct desktop *desktop;
struct thread_input *input;
if (req->tid)
{
if (!(thread = get_thread_from_id( req->tid ))) return;
if (!(desktop = get_thread_desktop( thread, 0 )))
{
release_object( thread );
return;
}
input = thread->queue ? thread->queue->input : NULL;
}
else
{
if (!(desktop = get_thread_desktop( current, 0 ))) return;
input = desktop->foreground_input; /* get the foreground thread info */
}
if (input)
{
reply->focus = input->focus;
reply->capture = input->capture;
reply->active = input->active;
reply->menu_owner = input->menu_owner;
reply->move_size = input->move_size;
reply->caret = input->caret;
reply->cursor = input->cursor;
reply->show_count = input->cursor_count;
reply->rect = input->caret_rect;
}
/* foreground window is active window of foreground thread */
reply->foreground = desktop->foreground_input ? desktop->foreground_input->active : 0;
if (thread) release_object( thread );
release_object( desktop );
}
/* retrieve queue keyboard state for a given thread */
DECL_HANDLER(get_key_state)
{
struct thread *thread;
struct desktop *desktop;
data_size_t size = min( 256, get_reply_max_size() );
if (!req->tid) /* get global async key state */
{
if (!(desktop = get_thread_desktop( current, 0 ))) return;
if (req->key >= 0)
{
reply->state = desktop->keystate[req->key & 0xff];
desktop->keystate[req->key & 0xff] &= ~0x40;
}
set_reply_data( desktop->keystate, size );
release_object( desktop );
}
else
{
if (!(thread = get_thread_from_id( req->tid ))) return;
if (thread->queue)
{
if (req->key >= 0) reply->state = thread->queue->input->keystate[req->key & 0xff];
set_reply_data( thread->queue->input->keystate, size );
}
release_object( thread );
}
}
/* set queue keyboard state for a given thread */
DECL_HANDLER(set_key_state)
{
struct thread *thread;
struct desktop *desktop;
data_size_t size = min( 256, get_req_data_size() );
if (!req->tid) /* set global async key state */
{
if (!(desktop = get_thread_desktop( current, 0 ))) return;
memcpy( desktop->keystate, get_req_data(), size );
release_object( desktop );
}
else
{
if (!(thread = get_thread_from_id( req->tid ))) return;
if (thread->queue) memcpy( thread->queue->input->keystate, get_req_data(), size );
release_object( thread );
}
}
/* set the system foreground window */
DECL_HANDLER(set_foreground_window)
{
struct thread *thread = NULL;
struct desktop *desktop;
struct msg_queue *queue = get_current_queue();
if (!(desktop = get_thread_desktop( current, 0 ))) return;
reply->previous = desktop->foreground_input ? desktop->foreground_input->active : 0;
reply->send_msg_old = (reply->previous && desktop->foreground_input != queue->input);
reply->send_msg_new = FALSE;
if (is_top_level_window( req->handle ) &&
((thread = get_window_thread( req->handle ))) &&
(thread->queue->input->desktop == desktop))
{
set_foreground_input( desktop, thread->queue->input );
reply->send_msg_new = (desktop->foreground_input != queue->input);
}
else set_win32_error( ERROR_INVALID_WINDOW_HANDLE );
if (thread) release_object( thread );
release_object( desktop );
}
/* set the current thread focus window */
DECL_HANDLER(set_focus_window)
{
struct msg_queue *queue = get_current_queue();
reply->previous = 0;
if (queue && check_queue_input_window( queue, req->handle ))
{
reply->previous = queue->input->focus;
queue->input->focus = get_user_full_handle( req->handle );
}
}
/* set the current thread active window */
DECL_HANDLER(set_active_window)
{
struct msg_queue *queue = get_current_queue();
reply->previous = 0;
if (queue && check_queue_input_window( queue, req->handle ))
{
if (!req->handle || make_window_active( req->handle ))
{
reply->previous = queue->input->active;
queue->input->active = get_user_full_handle( req->handle );
}
else set_error( STATUS_INVALID_HANDLE );
}
}
/* set the current thread capture window */
DECL_HANDLER(set_capture_window)
{
struct msg_queue *queue = get_current_queue();
reply->previous = reply->full_handle = 0;
if (queue && check_queue_input_window( queue, req->handle ))
{
struct thread_input *input = queue->input;
/* if in menu mode, reject all requests to change focus, except if the menu bit is set */
if (input->menu_owner && !(req->flags & CAPTURE_MENU))
{
set_error(STATUS_ACCESS_DENIED);
return;
}
reply->previous = input->capture;
input->capture = get_user_full_handle( req->handle );
input->menu_owner = (req->flags & CAPTURE_MENU) ? input->capture : 0;
input->move_size = (req->flags & CAPTURE_MOVESIZE) ? input->capture : 0;
reply->full_handle = input->capture;
}
}
/* Set the current thread caret window */
DECL_HANDLER(set_caret_window)
{
struct msg_queue *queue = get_current_queue();
reply->previous = 0;
if (queue && check_queue_input_window( queue, req->handle ))
{
struct thread_input *input = queue->input;
reply->previous = input->caret;
reply->old_rect = input->caret_rect;
reply->old_hide = input->caret_hide;
reply->old_state = input->caret_state;
set_caret_window( input, get_user_full_handle(req->handle) );
input->caret_rect.right = input->caret_rect.left + req->width;
input->caret_rect.bottom = input->caret_rect.top + req->height;
}
}
/* Set the current thread caret information */
DECL_HANDLER(set_caret_info)
{
struct msg_queue *queue = get_current_queue();
struct thread_input *input;
if (!queue) return;
input = queue->input;
reply->full_handle = input->caret;
reply->old_rect = input->caret_rect;
reply->old_hide = input->caret_hide;
reply->old_state = input->caret_state;
if (req->handle && get_user_full_handle(req->handle) != input->caret)
{
set_error( STATUS_ACCESS_DENIED );
return;
}
if (req->flags & SET_CARET_POS)
{
input->caret_rect.right += req->x - input->caret_rect.left;
input->caret_rect.bottom += req->y - input->caret_rect.top;
input->caret_rect.left = req->x;
input->caret_rect.top = req->y;
}
if (req->flags & SET_CARET_HIDE)
{
input->caret_hide += req->hide;
if (input->caret_hide < 0) input->caret_hide = 0;
}
if (req->flags & SET_CARET_STATE)
{
if (req->state == -1) input->caret_state = !input->caret_state;
else input->caret_state = !!req->state;
}
}
/* get the time of the last input event */
DECL_HANDLER(get_last_input_time)
{
reply->time = last_input_time;
}
/* set/get the current cursor */
DECL_HANDLER(set_cursor)
{
struct msg_queue *queue = get_current_queue();
struct thread_input *input;
if (!queue) return;
input = queue->input;
reply->prev_handle = input->cursor;
reply->prev_count = input->cursor_count;
reply->prev_x = input->desktop->cursor.x;
reply->prev_y = input->desktop->cursor.y;
if (req->flags & SET_CURSOR_HANDLE)
{
if (req->handle && !get_user_object( req->handle, USER_CLIENT ))
{
set_win32_error( ERROR_INVALID_CURSOR_HANDLE );
return;
}
input->cursor = req->handle;
}
if (req->flags & SET_CURSOR_COUNT)
{
queue->cursor_count += req->show_count;
input->cursor_count += req->show_count;
}
if (req->flags & SET_CURSOR_POS)
{
set_cursor_pos( input->desktop, req->x, req->y );
}
if (req->flags & (SET_CURSOR_CLIP | SET_CURSOR_NOCLIP))
{
struct desktop *desktop = input->desktop;
/* only the desktop owner can set the message */
if (req->clip_msg && get_top_window_owner(desktop) == current->process)
desktop->cursor.clip_msg = req->clip_msg;
set_clip_rectangle( desktop, (req->flags & SET_CURSOR_NOCLIP) ? NULL : &req->clip );
}
reply->new_x = input->desktop->cursor.x;
reply->new_y = input->desktop->cursor.y;
reply->new_clip = input->desktop->cursor.clip;
reply->last_change = input->desktop->cursor.last_change;
}
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