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wine/server/console.c

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/*
* Server-side console management
*
* Copyright (C) 1998 Alexandre Julliard
* 2001 Eric Pouech
*
*
* 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 <string.h>
#include <stdio.h>
#include <unistd.h>
#include <signal.h>
#include "ntstatus.h"
#define WIN32_NO_STATUS
#include "handle.h"
#include "process.h"
#include "request.h"
#include "unicode.h"
#include "wincon.h"
#include "winternl.h"
/* specific access rights (FIXME: should use finer-grained access rights) */
#define CONSOLE_READ 0x01
#define CONSOLE_WRITE 0x02
struct screen_buffer;
struct console_input_events;
struct console_input
{
struct object obj; /* object header */
int num_proc; /* number of processes attached to this console */
struct thread *renderer; /* console renderer thread */
int mode; /* input mode */
struct screen_buffer *active; /* active screen buffer */
int recnum; /* number of input records */
INPUT_RECORD *records; /* input records */
struct console_input_events *evt; /* synchronization event with renderer */
WCHAR *title; /* console title */
WCHAR **history; /* lines history */
int history_size; /* number of entries in history array */
int history_index; /* number of used entries in history array */
int history_mode; /* mode of history (non zero means remove doubled strings */
int edition_mode; /* index to edition mode flavors */
int input_cp; /* console input codepage */
int output_cp; /* console output codepage */
user_handle_t win; /* window handle if backend supports it */
struct event *event; /* event to wait on for input queue */
};
static unsigned int console_map_access( struct object *obj, unsigned int access );
static void console_input_dump( struct object *obj, int verbose );
static void console_input_destroy( struct object *obj );
static const struct object_ops console_input_ops =
{
sizeof(struct console_input), /* size */
console_input_dump, /* dump */
no_get_type, /* get_type */
no_add_queue, /* add_queue */
NULL, /* remove_queue */
NULL, /* signaled */
no_satisfied, /* satisfied */
no_signal, /* signal */
no_get_fd, /* get_fd */
console_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 */
console_input_destroy /* destroy */
};
static void console_input_events_dump( struct object *obj, int verbose );
static void console_input_events_destroy( struct object *obj );
static int console_input_events_signaled( struct object *obj, struct thread *thread );
struct console_input_events
{
struct object obj; /* object header */
int num_alloc; /* number of allocated events */
int num_used; /* number of actually used events */
struct console_renderer_event* events;
};
static const struct object_ops console_input_events_ops =
{
sizeof(struct console_input_events), /* size */
console_input_events_dump, /* dump */
no_get_type, /* get_type */
add_queue, /* add_queue */
remove_queue, /* remove_queue */
console_input_events_signaled, /* signaled */
no_satisfied, /* satisfied */
no_signal, /* signal */
no_get_fd, /* get_fd */
console_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 */
console_input_events_destroy /* destroy */
};
struct screen_buffer
{
struct object obj; /* object header */
struct list entry; /* entry in list of all screen buffers */
struct console_input *input; /* associated console input */
int mode; /* output mode */
int cursor_size; /* size of cursor (percentage filled) */
int cursor_visible;/* cursor visibility flag */
int cursor_x; /* position of cursor */
int cursor_y; /* position of cursor */
int width; /* size (w-h) of the screen buffer */
int height;
int max_width; /* size (w-h) of the window given font size */
int max_height;
char_info_t *data; /* the data for each cell - a width x height matrix */
unsigned short attr; /* default attribute for screen buffer */
rectangle_t win; /* current visible window on the screen buffer *
* as seen in wineconsole */
};
static void screen_buffer_dump( struct object *obj, int verbose );
static void screen_buffer_destroy( struct object *obj );
static const struct object_ops screen_buffer_ops =
{
sizeof(struct screen_buffer), /* size */
screen_buffer_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 */
console_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 */
screen_buffer_destroy /* destroy */
};
static struct list screen_buffer_list = LIST_INIT(screen_buffer_list);
static const char_info_t empty_char_info = { ' ', 0x000f }; /* white on black space */
/* access mapping for all console objects */
static unsigned int console_map_access( struct object *obj, unsigned int access )
{
if (access & GENERIC_READ) access |= SYNCHRONIZE | STANDARD_RIGHTS_READ | CONSOLE_READ;
if (access & GENERIC_WRITE) access |= SYNCHRONIZE | STANDARD_RIGHTS_WRITE | CONSOLE_WRITE;
if (access & GENERIC_EXECUTE) access |= SYNCHRONIZE | STANDARD_RIGHTS_EXECUTE;
if (access & GENERIC_ALL) access |= STANDARD_RIGHTS_ALL | CONSOLE_READ | CONSOLE_WRITE;
return access & ~(GENERIC_READ | GENERIC_WRITE | GENERIC_EXECUTE | GENERIC_ALL);
}
/* dumps the renderer events of a console */
static void console_input_events_dump( struct object *obj, int verbose )
{
struct console_input_events *evts = (struct console_input_events *)obj;
assert( obj->ops == &console_input_events_ops );
fprintf( stderr, "Console input events: %d/%d events\n",
evts->num_used, evts->num_alloc );
}
/* destroys the renderer events of a console */
static void console_input_events_destroy( struct object *obj )
{
struct console_input_events *evts = (struct console_input_events *)obj;
assert( obj->ops == &console_input_events_ops );
free( evts->events );
}
/* the renderer events list is signaled when it's not empty */
static int console_input_events_signaled( struct object *obj, struct thread *thread )
{
struct console_input_events *evts = (struct console_input_events *)obj;
assert( obj->ops == &console_input_events_ops );
return (evts->num_used != 0);
}
/* add an event to the console's renderer events list */
static void console_input_events_append( struct console_input_events* evts,
struct console_renderer_event* evt)
{
int collapsed = FALSE;
/* to be done even when evt has been generated by the rendere ? */
/* try to collapse evt into current queue's events */
if (evts->num_used)
{
struct console_renderer_event* last = &evts->events[evts->num_used - 1];
if (last->event == CONSOLE_RENDERER_UPDATE_EVENT &&
evt->event == CONSOLE_RENDERER_UPDATE_EVENT)
{
/* if two update events overlap, collapse them into a single one */
if (last->u.update.bottom + 1 >= evt->u.update.top &&
evt->u.update.bottom + 1 >= last->u.update.top)
{
last->u.update.top = min(last->u.update.top, evt->u.update.top);
last->u.update.bottom = max(last->u.update.bottom, evt->u.update.bottom);
collapsed = TRUE;
}
}
}
if (!collapsed)
{
if (evts->num_used == evts->num_alloc)
{
evts->num_alloc += 16;
evts->events = realloc( evts->events, evts->num_alloc * sizeof(*evt) );
assert(evts->events);
}
evts->events[evts->num_used++] = *evt;
}
wake_up( &evts->obj, 0 );
}
/* retrieves events from the console's renderer events list */
static void console_input_events_get( struct console_input_events* evts )
{
data_size_t num = get_reply_max_size() / sizeof(evts->events[0]);
if (num > evts->num_used) num = evts->num_used;
set_reply_data( evts->events, num * sizeof(evts->events[0]) );
if (num < evts->num_used)
{
memmove( &evts->events[0], &evts->events[num],
(evts->num_used - num) * sizeof(evts->events[0]) );
}
evts->num_used -= num;
}
static struct console_input_events *create_console_input_events(void)
{
struct console_input_events* evt;
if (!(evt = alloc_object( &console_input_events_ops ))) return NULL;
evt->num_alloc = evt->num_used = 0;
evt->events = NULL;
return evt;
}
static struct object *create_console_input( struct thread* renderer )
{
struct console_input *console_input;
if (!(console_input = alloc_object( &console_input_ops ))) return NULL;
console_input->renderer = renderer;
console_input->mode = ENABLE_PROCESSED_INPUT | ENABLE_LINE_INPUT |
ENABLE_ECHO_INPUT | ENABLE_MOUSE_INPUT;
console_input->num_proc = 0;
console_input->active = NULL;
console_input->recnum = 0;
console_input->records = NULL;
console_input->evt = create_console_input_events();
console_input->title = NULL;
console_input->history_size = 50;
console_input->history = calloc( console_input->history_size, sizeof(WCHAR*) );
console_input->history_index = 0;
console_input->history_mode = 0;
console_input->edition_mode = 0;
console_input->input_cp = 0;
console_input->output_cp = 0;
console_input->win = 0;
console_input->event = create_event( NULL, NULL, 0, 1, 0, NULL );
if (!console_input->history || !console_input->evt)
{
release_object( console_input );
return NULL;
}
return &console_input->obj;
}
static void generate_sb_initial_events( struct console_input *console_input )
{
struct screen_buffer *screen_buffer = console_input->active;
struct console_renderer_event evt;
evt.event = CONSOLE_RENDERER_ACTIVE_SB_EVENT;
memset(&evt.u, 0, sizeof(evt.u));
console_input_events_append( console_input->evt, &evt );
evt.event = CONSOLE_RENDERER_SB_RESIZE_EVENT;
evt.u.resize.width = screen_buffer->width;
evt.u.resize.height = screen_buffer->height;
console_input_events_append( console_input->evt, &evt );
evt.event = CONSOLE_RENDERER_DISPLAY_EVENT;
evt.u.display.left = screen_buffer->win.left;
evt.u.display.top = screen_buffer->win.top;
evt.u.display.width = screen_buffer->win.right - screen_buffer->win.left + 1;
evt.u.display.height = screen_buffer->win.bottom - screen_buffer->win.top + 1;
console_input_events_append( console_input->evt, &evt );
evt.event = CONSOLE_RENDERER_UPDATE_EVENT;
evt.u.update.top = 0;
evt.u.update.bottom = screen_buffer->height - 1;
console_input_events_append( console_input->evt, &evt );
evt.event = CONSOLE_RENDERER_CURSOR_GEOM_EVENT;
evt.u.cursor_geom.size = screen_buffer->cursor_size;
evt.u.cursor_geom.visible = screen_buffer->cursor_visible;
console_input_events_append( console_input->evt, &evt );
evt.event = CONSOLE_RENDERER_CURSOR_POS_EVENT;
evt.u.cursor_pos.x = screen_buffer->cursor_x;
evt.u.cursor_pos.y = screen_buffer->cursor_y;
console_input_events_append( console_input->evt, &evt );
}
static struct screen_buffer *create_console_output( struct console_input *console_input )
{
struct screen_buffer *screen_buffer;
int i;
if (!(screen_buffer = alloc_object( &screen_buffer_ops ))) return NULL;
screen_buffer->mode = ENABLE_PROCESSED_OUTPUT | ENABLE_WRAP_AT_EOL_OUTPUT;
screen_buffer->input = console_input;
screen_buffer->cursor_size = 100;
screen_buffer->cursor_visible = 1;
screen_buffer->width = 80;
screen_buffer->height = 150;
screen_buffer->max_width = 80;
screen_buffer->max_height = 25;
screen_buffer->cursor_x = 0;
screen_buffer->cursor_y = 0;
screen_buffer->attr = 0x0F;
screen_buffer->win.left = 0;
screen_buffer->win.right = screen_buffer->max_width - 1;
screen_buffer->win.top = 0;
screen_buffer->win.bottom = screen_buffer->max_height - 1;
list_add_head( &screen_buffer_list, &screen_buffer->entry );
if (!(screen_buffer->data = malloc( screen_buffer->width * screen_buffer->height *
sizeof(*screen_buffer->data) )))
{
release_object( screen_buffer );
return NULL;
}
/* clear the first row */
for (i = 0; i < screen_buffer->width; i++) screen_buffer->data[i] = empty_char_info;
/* and copy it to all other rows */
for (i = 1; i < screen_buffer->height; i++)
memcpy( &screen_buffer->data[i * screen_buffer->width], screen_buffer->data,
screen_buffer->width * sizeof(char_info_t) );
if (!console_input->active)
{
console_input->active = (struct screen_buffer*)grab_object( screen_buffer );
generate_sb_initial_events( console_input );
}
return screen_buffer;
}
/* free the console for this process */
int free_console( struct process *process )
{
struct console_input* console = process->console;
if (!console || !console->renderer) return 0;
process->console = NULL;
if (--console->num_proc == 0)
{
/* all processes have terminated... tell the renderer to terminate too */
struct console_renderer_event evt;
evt.event = CONSOLE_RENDERER_EXIT_EVENT;
memset(&evt.u, 0, sizeof(evt.u));
console_input_events_append( console->evt, &evt );
}
release_object( console );
return 1;
}
/* let process inherit the console from parent... this handle two cases :
* 1/ generic console inheritance
* 2/ parent is a renderer which launches process, and process should attach to the console
* renderered by parent
*/
void inherit_console(struct thread *parent_thread, struct process *process, obj_handle_t hconin)
{
int done = 0;
struct process* parent = parent_thread->process;
/* if parent is a renderer, then attach current process to its console
* a bit hacky....
*/
if (hconin)
{
struct console_input* console;
/* FIXME: should we check some access rights ? */
if ((console = (struct console_input*)get_handle_obj( parent, hconin,
0, &console_input_ops )))
{
if (console->renderer == parent_thread)
{
process->console = (struct console_input*)grab_object( console );
process->console->num_proc++;
done = 1;
}
release_object( console );
}
else clear_error(); /* ignore error */
}
/* otherwise, if parent has a console, attach child to this console */
if (!done && parent->console)
{
assert(parent->console->renderer);
process->console = (struct console_input*)grab_object( parent->console );
process->console->num_proc++;
}
}
struct thread *console_get_renderer( struct console_input *console )
{
return console->renderer;
}
static struct console_input* console_input_get( obj_handle_t handle, unsigned access )
{
struct console_input* console = NULL;
if (handle)
console = (struct console_input *)get_handle_obj( current->process, handle,
access, &console_input_ops );
else if (current->process->console)
{
assert( current->process->console->renderer );
console = (struct console_input *)grab_object( current->process->console );
}
if (!console && !get_error()) set_error(STATUS_INVALID_PARAMETER);
return console;
}
struct console_signal_info
{
struct console_input *console;
process_id_t group;
int signal;
};
static int propagate_console_signal_cb(struct process *process, void *user)
{
struct console_signal_info* csi = (struct console_signal_info*)user;
if (process->console == csi->console && process->running_threads &&
(!csi->group || process->group_id == csi->group))
{
/* find a suitable thread to signal */
struct thread *thread;
LIST_FOR_EACH_ENTRY( thread, &process->thread_list, struct thread, proc_entry )
{
if (send_thread_signal( thread, csi->signal )) break;
}
}
return FALSE;
}
static void propagate_console_signal( struct console_input *console,
int sig, process_id_t group_id )
{
struct console_signal_info csi;
if (!console)
{
set_error( STATUS_INVALID_PARAMETER );
return;
}
/* FIXME: should support the other events (like CTRL_BREAK) */
if (sig != CTRL_C_EVENT)
{
set_error( STATUS_NOT_IMPLEMENTED );
return;
}
csi.console = console;
csi.signal = SIGINT;
csi.group = group_id;
enum_processes(propagate_console_signal_cb, &csi);
}
static int get_console_mode( obj_handle_t handle )
{
struct object *obj;
int ret = 0;
if ((obj = get_handle_obj( current->process, handle, CONSOLE_READ, NULL )))
{
if (obj->ops == &console_input_ops)
ret = ((struct console_input *)obj)->mode;
else if (obj->ops == &screen_buffer_ops)
ret = ((struct screen_buffer *)obj)->mode;
else
set_error( STATUS_OBJECT_TYPE_MISMATCH );
release_object( obj );
}
return ret;
}
/* changes the mode of either a console input or a screen buffer */
static int set_console_mode( obj_handle_t handle, int mode )
{
struct object *obj;
int ret = 0;
if (!(obj = get_handle_obj( current->process, handle, CONSOLE_WRITE, NULL )))
return 0;
if (obj->ops == &console_input_ops)
{
/* FIXME: if we remove the edit mode bits, we need (???) to clean up the history */
((struct console_input *)obj)->mode = mode;
ret = 1;
}
else if (obj->ops == &screen_buffer_ops)
{
((struct screen_buffer *)obj)->mode = mode;
ret = 1;
}
else set_error( STATUS_OBJECT_TYPE_MISMATCH );
release_object( obj );
return ret;
}
/* add input events to a console input queue */
static int write_console_input( struct console_input* console, int count,
const INPUT_RECORD *records )
{
INPUT_RECORD *new_rec;
if (!count) return 0;
if (!(new_rec = realloc( console->records,
(console->recnum + count) * sizeof(INPUT_RECORD) )))
{
set_error( STATUS_NO_MEMORY );
release_object( console );
return -1;
}
console->records = new_rec;
memcpy( new_rec + console->recnum, records, count * sizeof(INPUT_RECORD) );
if (console->mode & ENABLE_PROCESSED_INPUT)
{
int i = 0;
while (i < count)
{
if (records[i].EventType == KEY_EVENT &&
records[i].Event.KeyEvent.uChar.UnicodeChar == 'C' - 64 &&
!(records[i].Event.KeyEvent.dwControlKeyState & ENHANCED_KEY))
{
if (i != count - 1)
memcpy( &console->records[console->recnum + i],
&console->records[console->recnum + i + 1],
(count - i - 1) * sizeof(INPUT_RECORD) );
count--;
if (records[i].Event.KeyEvent.bKeyDown)
{
/* send SIGINT to all processes attached to this console */
propagate_console_signal( console, CTRL_C_EVENT, 0 );
}
}
else i++;
}
}
if (!console->recnum && count) set_event( console->event );
console->recnum += count;
return count;
}
/* retrieve a pointer to the console input records */
static int read_console_input( obj_handle_t handle, int count, int flush )
{
struct console_input *console;
if (!(console = (struct console_input *)get_handle_obj( current->process, handle,
CONSOLE_READ, &console_input_ops )))
return -1;
if (!count)
{
/* special case: do not retrieve anything, but return
* the total number of records available */
count = console->recnum;
}
else
{
if (count > console->recnum) count = console->recnum;
set_reply_data( console->records, count * sizeof(INPUT_RECORD) );
}
if (flush)
{
int i;
for (i = count; i < console->recnum; i++)
console->records[i-count] = console->records[i];
if ((console->recnum -= count) > 0)
{
INPUT_RECORD *new_rec = realloc( console->records,
console->recnum * sizeof(INPUT_RECORD) );
if (new_rec) console->records = new_rec;
}
else
{
free( console->records );
console->records = NULL;
reset_event( console->event );
}
}
release_object( console );
return count;
}
/* set misc console input information */
static int set_console_input_info( const struct set_console_input_info_request *req,
const WCHAR *title, data_size_t len )
{
struct console_input *console;
struct console_renderer_event evt;
if (!(console = console_input_get( req->handle, CONSOLE_WRITE ))) goto error;
memset(&evt.u, 0, sizeof(evt.u));
if (req->mask & SET_CONSOLE_INPUT_INFO_ACTIVE_SB)
{
struct screen_buffer *screen_buffer;
screen_buffer = (struct screen_buffer *)get_handle_obj( current->process, req->active_sb,
CONSOLE_WRITE, &screen_buffer_ops );
if (!screen_buffer || screen_buffer->input != console)
{
set_error( STATUS_INVALID_HANDLE );
if (screen_buffer) release_object( screen_buffer );
goto error;
}
if (screen_buffer != console->active)
{
if (console->active) release_object( console->active );
console->active = screen_buffer;
generate_sb_initial_events( console );
}
else
release_object( screen_buffer );
}
if (req->mask & SET_CONSOLE_INPUT_INFO_TITLE)
{
WCHAR *new_title = mem_alloc( len + sizeof(WCHAR) );
if (new_title)
{
memcpy( new_title, title, len );
new_title[len / sizeof(WCHAR)] = 0;
free( console->title );
console->title = new_title;
evt.event = CONSOLE_RENDERER_TITLE_EVENT;
console_input_events_append( console->evt, &evt );
}
}
if (req->mask & SET_CONSOLE_INPUT_INFO_HISTORY_MODE)
{
console->history_mode = req->history_mode;
}
if ((req->mask & SET_CONSOLE_INPUT_INFO_HISTORY_SIZE) &&
console->history_size != req->history_size)
{
WCHAR** mem = NULL;
int i;
int delta;
if (req->history_size)
{
mem = mem_alloc( req->history_size * sizeof(WCHAR*) );
if (!mem) goto error;
memset( mem, 0, req->history_size * sizeof(WCHAR*) );
}
delta = (console->history_index > req->history_size) ?
(console->history_index - req->history_size) : 0;
for (i = delta; i < console->history_index; i++)
{
mem[i - delta] = console->history[i];
console->history[i] = NULL;
}
console->history_index -= delta;
for (i = 0; i < console->history_size; i++)
free( console->history[i] );
free( console->history );
console->history = mem;
console->history_size = req->history_size;
}
if (req->mask & SET_CONSOLE_INPUT_INFO_EDITION_MODE)
{
console->edition_mode = req->edition_mode;
}
if (req->mask & SET_CONSOLE_INPUT_INFO_INPUT_CODEPAGE)
{
console->input_cp = req->input_cp;
}
if (req->mask & SET_CONSOLE_INPUT_INFO_OUTPUT_CODEPAGE)
{
console->output_cp = req->output_cp;
}
if (req->mask & SET_CONSOLE_INPUT_INFO_WIN)
{
console->win = req->win;
}
release_object( console );
return 1;
error:
if (console) release_object( console );
return 0;
}
/* resize a screen buffer */
static int change_screen_buffer_size( struct screen_buffer *screen_buffer,
int new_width, int new_height )
{
int i, old_width, old_height, copy_width, copy_height;
char_info_t *new_data;
if (!(new_data = malloc( new_width * new_height * sizeof(*new_data) )))
{
set_error( STATUS_NO_MEMORY );
return 0;
}
old_width = screen_buffer->width;
old_height = screen_buffer->height;
copy_width = min( old_width, new_width );
copy_height = min( old_height, new_height );
/* copy all the rows */
for (i = 0; i < copy_height; i++)
{
memcpy( &new_data[i * new_width], &screen_buffer->data[i * old_width],
copy_width * sizeof(char_info_t) );
}
/* clear the end of each row */
if (new_width > old_width)
{
/* fill first row */
for (i = old_width; i < new_width; i++) new_data[i] = empty_char_info;
/* and blast it to the other rows */
for (i = 1; i < copy_height; i++)
memcpy( &new_data[i * new_width + old_width], &new_data[old_width],
(new_width - old_width) * sizeof(char_info_t) );
}
/* clear remaining rows */
if (new_height > old_height)
{
/* fill first row */
for (i = 0; i < new_width; i++) new_data[old_height * new_width + i] = empty_char_info;
/* and blast it to the other rows */
for (i = old_height+1; i < new_height; i++)
memcpy( &new_data[i * new_width], &new_data[old_height * new_width],
new_width * sizeof(char_info_t) );
}
free( screen_buffer->data );
screen_buffer->data = new_data;
screen_buffer->width = new_width;
screen_buffer->height = new_height;
return 1;
}
/* set misc screen buffer information */
static int set_console_output_info( struct screen_buffer *screen_buffer,
const struct set_console_output_info_request *req )
{
struct console_renderer_event evt;
memset(&evt.u, 0, sizeof(evt.u));
if (req->mask & SET_CONSOLE_OUTPUT_INFO_CURSOR_GEOM)
{
if (req->cursor_size < 1 || req->cursor_size > 100)
{
set_error( STATUS_INVALID_PARAMETER );
return 0;
}
if (screen_buffer->cursor_size != req->cursor_size ||
screen_buffer->cursor_visible != req->cursor_visible)
{
screen_buffer->cursor_size = req->cursor_size;
screen_buffer->cursor_visible = req->cursor_visible;
evt.event = CONSOLE_RENDERER_CURSOR_GEOM_EVENT;
evt.u.cursor_geom.size = req->cursor_size;
evt.u.cursor_geom.visible = req->cursor_visible;
console_input_events_append( screen_buffer->input->evt, &evt );
}
}
if (req->mask & SET_CONSOLE_OUTPUT_INFO_CURSOR_POS)
{
if (req->cursor_x < 0 || req->cursor_x >= screen_buffer->width ||
req->cursor_y < 0 || req->cursor_y >= screen_buffer->height)
{
set_error( STATUS_INVALID_PARAMETER );
return 0;
}
if (screen_buffer->cursor_x != req->cursor_x || screen_buffer->cursor_y != req->cursor_y)
{
screen_buffer->cursor_x = req->cursor_x;
screen_buffer->cursor_y = req->cursor_y;
evt.event = CONSOLE_RENDERER_CURSOR_POS_EVENT;
evt.u.cursor_pos.x = req->cursor_x;
evt.u.cursor_pos.y = req->cursor_y;
console_input_events_append( screen_buffer->input->evt, &evt );
}
}
if (req->mask & SET_CONSOLE_OUTPUT_INFO_SIZE)
{
unsigned cc;
/* new screen-buffer cannot be smaller than actual window */
if (req->width < screen_buffer->win.right - screen_buffer->win.left + 1 ||
req->height < screen_buffer->win.bottom - screen_buffer->win.top + 1)
{
set_error( STATUS_INVALID_PARAMETER );
return 0;
}
/* FIXME: there are also some basic minimum and max size to deal with */
if (!change_screen_buffer_size( screen_buffer, req->width, req->height )) return 0;
evt.event = CONSOLE_RENDERER_SB_RESIZE_EVENT;
evt.u.resize.width = req->width;
evt.u.resize.height = req->height;
console_input_events_append( screen_buffer->input->evt, &evt );
evt.event = CONSOLE_RENDERER_UPDATE_EVENT;
evt.u.update.top = 0;
evt.u.update.bottom = screen_buffer->height - 1;
console_input_events_append( screen_buffer->input->evt, &evt );
/* scroll window to display sb */
if (screen_buffer->win.right >= req->width)
{
screen_buffer->win.right -= screen_buffer->win.left;
screen_buffer->win.left = 0;
}
if (screen_buffer->win.bottom >= req->height)
{
screen_buffer->win.bottom -= screen_buffer->win.top;
screen_buffer->win.top = 0;
}
/* reset cursor if needed (normally, if cursor was outside of new sb, the
* window has been shifted so that the new position of the cursor will be
* visible */
cc = 0;
if (screen_buffer->cursor_x >= req->width)
{
screen_buffer->cursor_x = req->width - 1;
cc++;
}
if (screen_buffer->cursor_y >= req->height)
{
screen_buffer->cursor_y = req->height - 1;
cc++;
}
if (cc)
{
evt.event = CONSOLE_RENDERER_CURSOR_POS_EVENT;
evt.u.cursor_pos.x = req->cursor_x;
evt.u.cursor_pos.y = req->cursor_y;
console_input_events_append( screen_buffer->input->evt, &evt );
}
if (screen_buffer == screen_buffer->input->active &&
screen_buffer->input->mode & ENABLE_WINDOW_INPUT)
{
INPUT_RECORD ir;
ir.EventType = WINDOW_BUFFER_SIZE_EVENT;
ir.Event.WindowBufferSizeEvent.dwSize.X = req->width;
ir.Event.WindowBufferSizeEvent.dwSize.Y = req->height;
write_console_input( screen_buffer->input, 1, &ir );
}
}
if (req->mask & SET_CONSOLE_OUTPUT_INFO_ATTR)
{
screen_buffer->attr = req->attr;
}
if (req->mask & SET_CONSOLE_OUTPUT_INFO_DISPLAY_WINDOW)
{
if (req->win_left < 0 || req->win_left > req->win_right ||
req->win_right >= screen_buffer->width ||
req->win_top < 0 || req->win_top > req->win_bottom ||
req->win_bottom >= screen_buffer->height)
{
set_error( STATUS_INVALID_PARAMETER );
return 0;
}
if (screen_buffer->win.left != req->win_left || screen_buffer->win.top != req->win_top ||
screen_buffer->win.right != req->win_right || screen_buffer->win.bottom != req->win_bottom)
{
screen_buffer->win.left = req->win_left;
screen_buffer->win.top = req->win_top;
screen_buffer->win.right = req->win_right;
screen_buffer->win.bottom = req->win_bottom;
evt.event = CONSOLE_RENDERER_DISPLAY_EVENT;
evt.u.display.left = req->win_left;
evt.u.display.top = req->win_top;
evt.u.display.width = req->win_right - req->win_left + 1;
evt.u.display.height = req->win_bottom - req->win_top + 1;
console_input_events_append( screen_buffer->input->evt, &evt );
}
}
if (req->mask & SET_CONSOLE_OUTPUT_INFO_MAX_SIZE)
{
/* can only be done by renderer */
if (current->process->console != screen_buffer->input)
{
set_error( STATUS_INVALID_PARAMETER );
return 0;
}
screen_buffer->max_width = req->max_width;
screen_buffer->max_height = req->max_height;
}
return 1;
}
/* appends a new line to history (history is a fixed size array) */
static void console_input_append_hist( struct console_input* console, const WCHAR* buf, data_size_t len )
{
WCHAR* ptr = mem_alloc( (len + 1) * sizeof(WCHAR) );
if (!ptr)
return;
if (!console || !console->history_size)
{
set_error( STATUS_INVALID_PARAMETER ); /* FIXME */
free( ptr );
return;
}
memcpy( ptr, buf, len * sizeof(WCHAR) );
ptr[len] = 0;
if (console->history_mode && console->history_index &&
strncmpW( console->history[console->history_index - 1], ptr, len * sizeof(WCHAR) ) == 0)
{
/* ok, mode ask us to not use twice the same string...
* so just free mem and returns
*/
set_error( STATUS_ALIAS_EXISTS );
free(ptr);
return;
}
if (console->history_index < console->history_size)
{
console->history[console->history_index++] = ptr;
}
else
{
free( console->history[0]) ;
memmove( &console->history[0], &console->history[1],
(console->history_size - 1) * sizeof(WCHAR*) );
console->history[console->history_size - 1] = ptr;
}
}
/* returns a line from the cache */
static data_size_t console_input_get_hist( struct console_input *console, int index )
{
data_size_t ret = 0;
if (index >= console->history_index) set_error( STATUS_INVALID_PARAMETER );
else
{
ret = strlenW( console->history[index] ) * sizeof(WCHAR);
set_reply_data( console->history[index], min( ret, get_reply_max_size() ));
}
return ret;
}
/* dumb dump */
static void console_input_dump( struct object *obj, int verbose )
{
struct console_input *console = (struct console_input *)obj;
assert( obj->ops == &console_input_ops );
fprintf( stderr, "Console input active=%p evt=%p\n",
console->active, console->evt );
}
static void console_input_destroy( struct object *obj )
{
struct console_input* console_in = (struct console_input *)obj;
struct screen_buffer* curr;
int i;
assert( obj->ops == &console_input_ops );
free( console_in->title );
free( console_in->records );
if (console_in->active) release_object( console_in->active );
console_in->active = NULL;
LIST_FOR_EACH_ENTRY( curr, &screen_buffer_list, struct screen_buffer, entry )
{
if (curr->input == console_in) curr->input = NULL;
}
release_object( console_in->evt );
console_in->evt = NULL;
release_object( console_in->event );
for (i = 0; i < console_in->history_size; i++)
free( console_in->history[i] );
free( console_in->history );
}
static void screen_buffer_dump( struct object *obj, int verbose )
{
struct screen_buffer *screen_buffer = (struct screen_buffer *)obj;
assert( obj->ops == &screen_buffer_ops );
fprintf(stderr, "Console screen buffer input=%p\n", screen_buffer->input );
}
static void screen_buffer_destroy( struct object *obj )
{
struct screen_buffer *screen_buffer = (struct screen_buffer *)obj;
assert( obj->ops == &screen_buffer_ops );
list_remove( &screen_buffer->entry );
if (screen_buffer->input && screen_buffer->input->active == screen_buffer)
{
struct screen_buffer *sb;
screen_buffer->input->active = NULL;
LIST_FOR_EACH_ENTRY( sb, &screen_buffer_list, struct screen_buffer, entry )
{
if (sb->input == screen_buffer->input)
{
sb->input->active = sb;
break;
}
}
}
free( screen_buffer->data );
}
/* write data into a screen buffer */
static int write_console_output( struct screen_buffer *screen_buffer, data_size_t size,
const void* data, enum char_info_mode mode,
int x, int y, int wrap )
{
unsigned int i;
char_info_t *end, *dest = screen_buffer->data + y * screen_buffer->width + x;
if (y >= screen_buffer->height) return 0;
if (wrap)
end = screen_buffer->data + screen_buffer->height * screen_buffer->width;
else
end = screen_buffer->data + (y+1) * screen_buffer->width;
switch(mode)
{
case CHAR_INFO_MODE_TEXT:
{
const WCHAR *ptr = data;
for (i = 0; i < size/sizeof(*ptr) && dest < end; dest++, i++) dest->ch = ptr[i];
}
break;
case CHAR_INFO_MODE_ATTR:
{
const unsigned short *ptr = data;
for (i = 0; i < size/sizeof(*ptr) && dest < end; dest++, i++) dest->attr = ptr[i];
}
break;
case CHAR_INFO_MODE_TEXTATTR:
{
const char_info_t *ptr = data;
for (i = 0; i < size/sizeof(*ptr) && dest < end; dest++, i++) *dest = ptr[i];
}
break;
case CHAR_INFO_MODE_TEXTSTDATTR:
{
const WCHAR *ptr = data;
for (i = 0; i < size/sizeof(*ptr) && dest < end; dest++, i++)
{
dest->ch = ptr[i];
dest->attr = screen_buffer->attr;
}
}
break;
default:
set_error( STATUS_INVALID_PARAMETER );
return 0;
}
if (i && screen_buffer == screen_buffer->input->active)
{
struct console_renderer_event evt;
evt.event = CONSOLE_RENDERER_UPDATE_EVENT;
memset(&evt.u, 0, sizeof(evt.u));
evt.u.update.top = y + x / screen_buffer->width;
evt.u.update.bottom = y + (x + i - 1) / screen_buffer->width;
console_input_events_append( screen_buffer->input->evt, &evt );
}
return i;
}
/* fill a screen buffer with uniform data */
static int fill_console_output( struct screen_buffer *screen_buffer, char_info_t data,
enum char_info_mode mode, int x, int y, int count, int wrap )
{
int i;
char_info_t *end, *dest = screen_buffer->data + y * screen_buffer->width + x;
if (y >= screen_buffer->height) return 0;
if (wrap)
end = screen_buffer->data + screen_buffer->height * screen_buffer->width;
else
end = screen_buffer->data + (y+1) * screen_buffer->width;
if (count > end - dest) count = end - dest;
switch(mode)
{
case CHAR_INFO_MODE_TEXT:
for (i = 0; i < count; i++) dest[i].ch = data.ch;
break;
case CHAR_INFO_MODE_ATTR:
for (i = 0; i < count; i++) dest[i].attr = data.attr;
break;
case CHAR_INFO_MODE_TEXTATTR:
for (i = 0; i < count; i++) dest[i] = data;
break;
case CHAR_INFO_MODE_TEXTSTDATTR:
for (i = 0; i < count; i++)
{
dest[i].ch = data.ch;
dest[i].attr = screen_buffer->attr;
}
break;
default:
set_error( STATUS_INVALID_PARAMETER );
return 0;
}
if (count && screen_buffer == screen_buffer->input->active)
{
struct console_renderer_event evt;
evt.event = CONSOLE_RENDERER_UPDATE_EVENT;
memset(&evt.u, 0, sizeof(evt.u));
evt.u.update.top = y;
evt.u.update.bottom = (y * screen_buffer->width + x + count - 1) / screen_buffer->width;
console_input_events_append( screen_buffer->input->evt, &evt );
}
return i;
}
/* read data from a screen buffer */
static void read_console_output( struct screen_buffer *screen_buffer, int x, int y,
enum char_info_mode mode, int wrap )
{
int i;
char_info_t *end, *src = screen_buffer->data + y * screen_buffer->width + x;
if (y >= screen_buffer->height) return;
if (wrap)
end = screen_buffer->data + screen_buffer->height * screen_buffer->width;
else
end = screen_buffer->data + (y+1) * screen_buffer->width;
switch(mode)
{
case CHAR_INFO_MODE_TEXT:
{
WCHAR *data;
int count = min( end - src, get_reply_max_size() / sizeof(*data) );
if ((data = set_reply_data_size( count * sizeof(*data) )))
{
for (i = 0; i < count; i++) data[i] = src[i].ch;
}
}
break;
case CHAR_INFO_MODE_ATTR:
{
unsigned short *data;
int count = min( end - src, get_reply_max_size() / sizeof(*data) );
if ((data = set_reply_data_size( count * sizeof(*data) )))
{
for (i = 0; i < count; i++) data[i] = src[i].attr;
}
}
break;
case CHAR_INFO_MODE_TEXTATTR:
{
char_info_t *data;
int count = min( end - src, get_reply_max_size() / sizeof(*data) );
if ((data = set_reply_data_size( count * sizeof(*data) )))
{
for (i = 0; i < count; i++) data[i] = src[i];
}
}
break;
default:
set_error( STATUS_INVALID_PARAMETER );
break;
}
}
/* scroll parts of a screen buffer */
static void scroll_console_output( obj_handle_t handle, int xsrc, int ysrc, int xdst, int ydst,
int w, int h )
{
struct screen_buffer *screen_buffer;
int j;
char_info_t *psrc, *pdst;
struct console_renderer_event evt;
if (!(screen_buffer = (struct screen_buffer *)get_handle_obj( current->process, handle,
CONSOLE_READ, &screen_buffer_ops )))
return;
if (xsrc < 0 || ysrc < 0 || xdst < 0 || ydst < 0 ||
xsrc + w > screen_buffer->width ||
xdst + w > screen_buffer->width ||
ysrc + h > screen_buffer->height ||
ydst + h > screen_buffer->height ||
w == 0 || h == 0)
{
set_error( STATUS_INVALID_PARAMETER );
release_object( screen_buffer );
return;
}
if (ysrc < ydst)
{
psrc = &screen_buffer->data[(ysrc + h - 1) * screen_buffer->width + xsrc];
pdst = &screen_buffer->data[(ydst + h - 1) * screen_buffer->width + xdst];
for (j = h; j > 0; j--)
{
memcpy(pdst, psrc, w * sizeof(*pdst) );
pdst -= screen_buffer->width;
psrc -= screen_buffer->width;
}
}
else
{
psrc = &screen_buffer->data[ysrc * screen_buffer->width + xsrc];
pdst = &screen_buffer->data[ydst * screen_buffer->width + xdst];
for (j = 0; j < h; j++)
{
/* we use memmove here because when psrc and pdst are the same,
* copies are done on the same row, so the dst and src blocks
* can overlap */
memmove( pdst, psrc, w * sizeof(*pdst) );
pdst += screen_buffer->width;
psrc += screen_buffer->width;
}
}
/* FIXME: this could be enhanced, by signalling scroll */
evt.event = CONSOLE_RENDERER_UPDATE_EVENT;
memset(&evt.u, 0, sizeof(evt.u));
evt.u.update.top = min(ysrc, ydst);
evt.u.update.bottom = max(ysrc, ydst) + h - 1;
console_input_events_append( screen_buffer->input->evt, &evt );
release_object( screen_buffer );
}
/* allocate a console for the renderer */
DECL_HANDLER(alloc_console)
{
obj_handle_t in = 0;
obj_handle_t evt = 0;
struct process *process;
struct process *renderer = current->process;
struct console_input *console;
if (req->pid)
{
if (!(process = get_process_from_id( req->pid ))) return;
}
else
{
if (!(process = renderer->parent))
{
set_error( STATUS_ACCESS_DENIED );
return;
}
grab_object( process );
}
if (process != renderer && process->console)
{
set_error( STATUS_ACCESS_DENIED );
goto the_end;
}
if ((console = (struct console_input*)create_console_input( current )))
{
if ((in = alloc_handle( renderer, console, req->access, req->attributes )))
{
if ((evt = alloc_handle( renderer, console->evt, SYNCHRONIZE|GENERIC_READ|GENERIC_WRITE, 0 )))
{
if (process != renderer)
{
process->console = (struct console_input*)grab_object( console );
console->num_proc++;
}
reply->handle_in = in;
reply->event = evt;
release_object( console );
goto the_end;
}
close_handle( renderer, in );
}
free_console( process );
}
the_end:
release_object( process );
}
/* free the console of the current process */
DECL_HANDLER(free_console)
{
free_console( current->process );
}
/* let the renderer peek the events it's waiting on */
DECL_HANDLER(get_console_renderer_events)
{
struct console_input_events *evt;
evt = (struct console_input_events *)get_handle_obj( current->process, req->handle,
CONSOLE_READ, &console_input_events_ops );
if (!evt) return;
console_input_events_get( evt );
release_object( evt );
}
/* open a handle to the process console */
DECL_HANDLER(open_console)
{
struct object *obj = NULL;
reply->handle = 0;
if (req->from == (obj_handle_t)0)
{
if (current->process->console && current->process->console->renderer)
obj = grab_object( (struct object*)current->process->console );
}
else if (req->from == (obj_handle_t)1)
{
if (current->process->console && current->process->console->renderer &&
current->process->console->active)
obj = grab_object( (struct object*)current->process->console->active );
}
else if ((obj = get_handle_obj( current->process, req->from,
CONSOLE_READ|CONSOLE_WRITE, &console_input_ops )))
{
struct console_input *console = (struct console_input *)obj;
obj = (console->active) ? grab_object( console->active ) : NULL;
release_object( console );
}
/* FIXME: req->share is not used (as in screen buffer creation) */
if (obj)
{
reply->handle = alloc_handle( current->process, obj, req->access, req->attributes );
release_object( obj );
}
else if (!get_error()) set_error( STATUS_ACCESS_DENIED );
}
/* set info about a console input */
DECL_HANDLER(set_console_input_info)
{
set_console_input_info( req, get_req_data(), get_req_data_size() );
}
/* get info about a console (output only) */
DECL_HANDLER(get_console_input_info)
{
struct console_input *console;
if (!(console = console_input_get( req->handle, CONSOLE_READ ))) return;
if (console->title)
{
data_size_t len = strlenW( console->title ) * sizeof(WCHAR);
if (len > get_reply_max_size()) len = get_reply_max_size();
set_reply_data( console->title, len );
}
reply->history_mode = console->history_mode;
reply->history_size = console->history_size;
reply->history_index = console->history_index;
reply->edition_mode = console->edition_mode;
reply->input_cp = console->input_cp;
reply->output_cp = console->output_cp;
reply->win = console->win;
release_object( console );
}
/* get a console mode (input or output) */
DECL_HANDLER(get_console_mode)
{
reply->mode = get_console_mode( req->handle );
}
/* set a console mode (input or output) */
DECL_HANDLER(set_console_mode)
{
set_console_mode( req->handle, req->mode );
}
/* add input records to a console input queue */
DECL_HANDLER(write_console_input)
{
struct console_input *console;
reply->written = 0;
if (!(console = (struct console_input *)get_handle_obj( current->process, req->handle,
CONSOLE_WRITE, &console_input_ops )))
return;
reply->written = write_console_input( console, get_req_data_size() / sizeof(INPUT_RECORD),
get_req_data() );
release_object( console );
}
/* fetch input records from a console input queue */
DECL_HANDLER(read_console_input)
{
int count = get_reply_max_size() / sizeof(INPUT_RECORD);
reply->read = read_console_input( req->handle, count, req->flush );
}
/* appends a string to console's history */
DECL_HANDLER(append_console_input_history)
{
struct console_input *console;
if (!(console = console_input_get( req->handle, CONSOLE_WRITE ))) return;
console_input_append_hist( console, get_req_data(), get_req_data_size() / sizeof(WCHAR) );
release_object( console );
}
/* appends a string to console's history */
DECL_HANDLER(get_console_input_history)
{
struct console_input *console;
if (!(console = console_input_get( req->handle, CONSOLE_WRITE ))) return;
reply->total = console_input_get_hist( console, req->index );
release_object( console );
}
/* creates a screen buffer */
DECL_HANDLER(create_console_output)
{
struct console_input* console;
struct screen_buffer* screen_buffer;
if (!(console = console_input_get( req->handle_in, CONSOLE_WRITE ))) return;
screen_buffer = create_console_output( console );
if (screen_buffer)
{
/* FIXME: should store sharing and test it when opening the CONOUT$ device
* see file.c on how this could be done */
reply->handle_out = alloc_handle( current->process, screen_buffer, req->access, req->attributes );
release_object( screen_buffer );
}
release_object( console );
}
/* set info about a console screen buffer */
DECL_HANDLER(set_console_output_info)
{
struct screen_buffer *screen_buffer;
if ((screen_buffer = (struct screen_buffer*)get_handle_obj( current->process, req->handle,
CONSOLE_WRITE, &screen_buffer_ops)))
{
set_console_output_info( screen_buffer, req );
release_object( screen_buffer );
}
}
/* get info about a console screen buffer */
DECL_HANDLER(get_console_output_info)
{
struct screen_buffer *screen_buffer;
if ((screen_buffer = (struct screen_buffer *)get_handle_obj( current->process, req->handle,
CONSOLE_READ, &screen_buffer_ops)))
{
reply->cursor_size = screen_buffer->cursor_size;
reply->cursor_visible = screen_buffer->cursor_visible;
reply->cursor_x = screen_buffer->cursor_x;
reply->cursor_y = screen_buffer->cursor_y;
reply->width = screen_buffer->width;
reply->height = screen_buffer->height;
reply->attr = screen_buffer->attr;
reply->win_left = screen_buffer->win.left;
reply->win_top = screen_buffer->win.top;
reply->win_right = screen_buffer->win.right;
reply->win_bottom = screen_buffer->win.bottom;
reply->max_width = screen_buffer->max_width;
reply->max_height = screen_buffer->max_height;
release_object( screen_buffer );
}
}
/* read data (chars & attrs) from a screen buffer */
DECL_HANDLER(read_console_output)
{
struct screen_buffer *screen_buffer;
if ((screen_buffer = (struct screen_buffer*)get_handle_obj( current->process, req->handle,
CONSOLE_READ, &screen_buffer_ops )))
{
read_console_output( screen_buffer, req->x, req->y, req->mode, req->wrap );
reply->width = screen_buffer->width;
reply->height = screen_buffer->height;
release_object( screen_buffer );
}
}
/* write data (char and/or attrs) to a screen buffer */
DECL_HANDLER(write_console_output)
{
struct screen_buffer *screen_buffer;
if ((screen_buffer = (struct screen_buffer*)get_handle_obj( current->process, req->handle,
CONSOLE_WRITE, &screen_buffer_ops)))
{
reply->written = write_console_output( screen_buffer, get_req_data_size(), get_req_data(),
req->mode, req->x, req->y, req->wrap );
reply->width = screen_buffer->width;
reply->height = screen_buffer->height;
release_object( screen_buffer );
}
}
/* fill a screen buffer with constant data (chars and/or attributes) */
DECL_HANDLER(fill_console_output)
{
struct screen_buffer *screen_buffer;
if ((screen_buffer = (struct screen_buffer*)get_handle_obj( current->process, req->handle,
CONSOLE_WRITE, &screen_buffer_ops)))
{
reply->written = fill_console_output( screen_buffer, req->data, req->mode,
req->x, req->y, req->count, req->wrap );
release_object( screen_buffer );
}
}
/* move a rect of data in a screen buffer */
DECL_HANDLER(move_console_output)
{
scroll_console_output( req->handle, req->x_src, req->y_src, req->x_dst, req->y_dst,
req->w, req->h );
}
/* sends a signal to a console (process, group...) */
DECL_HANDLER(send_console_signal)
{
process_id_t group;
group = req->group_id ? req->group_id : current->process->group_id;
if (!group)
set_error( STATUS_INVALID_PARAMETER );
else
propagate_console_signal( current->process->console, req->signal, group );
}
/* get console which renderer is 'current' */
static int cgwe_enum( struct process* process, void* user)
{
if (process->console && process->console->renderer == current)
{
*(struct console_input**)user = process->console;
return 1;
}
return 0;
}
DECL_HANDLER(get_console_wait_event)
{
struct console_input* console = NULL;
if (current->process->console && current->process->console->renderer)
console = (struct console_input*)grab_object( (struct object*)current->process->console );
else enum_processes(cgwe_enum, &console);
if (console)
{
reply->handle = alloc_handle( current->process, console->event, EVENT_ALL_ACCESS, 0 );
release_object( console );
}
else set_error( STATUS_INVALID_PARAMETER );
}
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