Sweden-Number/server/console.c

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/*
* Server-side console management
*
* Copyright (C) 1998 Alexandre Julliard
*
* FIXME: all this stuff is a hack to avoid breaking
* the client-side console support.
*/
#include <assert.h>
#include <fcntl.h>
#include <signal.h>
#include <string.h>
#include <stdio.h>
#include <stdlib.h>
#include <sys/errno.h>
#include <sys/stat.h>
#include <sys/time.h>
#include <sys/types.h>
#include <time.h>
#include <unistd.h>
#include "winerror.h"
#include "winnt.h"
#include "wincon.h"
#include "handle.h"
#include "process.h"
#include "thread.h"
struct screen_buffer;
struct console_input
{
struct object obj; /* object header */
struct select_user select; /* select user */
int mode; /* input mode */
struct screen_buffer *output; /* associated screen buffer */
int recnum; /* number of input records */
INPUT_RECORD *records; /* input records */
};
struct screen_buffer
{
struct object obj; /* object header */
struct select_user select; /* select user */
int mode; /* output mode */
struct console_input *input; /* associated console input */
int cursor_size; /* size of cursor (percentage filled) */
int cursor_visible;/* cursor visibility flag */
int pid; /* xterm pid (hack) */
char *title; /* console title */
};
static void console_input_dump( struct object *obj, int verbose );
static int console_input_add_queue( struct object *obj, struct wait_queue_entry *entry );
static void console_input_remove_queue( struct object *obj, struct wait_queue_entry *entry );
static int console_input_signaled( struct object *obj, struct thread *thread );
static int console_input_get_read_fd( struct object *obj );
static void console_input_destroy( struct object *obj );
static void screen_buffer_dump( struct object *obj, int verbose );
static int screen_buffer_add_queue( struct object *obj, struct wait_queue_entry *entry );
static void screen_buffer_remove_queue( struct object *obj, struct wait_queue_entry *entry );
static int screen_buffer_signaled( struct object *obj, struct thread *thread );
static int screen_buffer_get_write_fd( struct object *obj );
static void screen_buffer_destroy( struct object *obj );
/* common routine */
static int console_get_info( struct object *obj, struct get_file_info_reply *reply );
static const struct object_ops console_input_ops =
{
console_input_dump,
console_input_add_queue,
console_input_remove_queue,
console_input_signaled,
no_satisfied,
console_input_get_read_fd,
no_write_fd,
no_flush,
console_get_info,
console_input_destroy
};
static const struct object_ops screen_buffer_ops =
{
screen_buffer_dump,
screen_buffer_add_queue,
screen_buffer_remove_queue,
screen_buffer_signaled,
no_satisfied,
no_read_fd,
screen_buffer_get_write_fd,
no_flush,
console_get_info,
screen_buffer_destroy
};
int create_console( int fd, struct object *obj[2] )
{
struct console_input *console_input;
struct screen_buffer *screen_buffer;
int read_fd, write_fd;
if ((read_fd = (fd != -1) ? dup(fd) : dup(0)) == -1)
{
file_set_error();
return 0;
}
if ((write_fd = (fd != -1) ? dup(fd) : dup(1)) == -1)
{
file_set_error();
close( read_fd );
return 0;
}
if (!(console_input = mem_alloc( sizeof(struct console_input) )))
{
close( read_fd );
close( write_fd );
return 0;
}
if (!(screen_buffer = mem_alloc( sizeof(struct screen_buffer) )))
{
close( read_fd );
close( write_fd );
free( console_input );
return 0;
}
init_object( &console_input->obj, &console_input_ops, NULL );
init_object( &screen_buffer->obj, &screen_buffer_ops, NULL );
console_input->select.fd = read_fd;
console_input->select.func = default_select_event;
console_input->select.private = console_input;
console_input->mode = ENABLE_PROCESSED_INPUT | ENABLE_LINE_INPUT |
ENABLE_ECHO_INPUT | ENABLE_MOUSE_INPUT;
console_input->output = screen_buffer;
console_input->recnum = 0;
console_input->records = NULL;
screen_buffer->select.fd = write_fd;
screen_buffer->select.func = default_select_event;
screen_buffer->select.private = screen_buffer;
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->pid = 0;
screen_buffer->title = strdup( "Wine console" );
register_select_user( &console_input->select );
register_select_user( &screen_buffer->select );
CLEAR_ERROR();
obj[0] = &console_input->obj;
obj[1] = &screen_buffer->obj;
return 1;
}
static int set_console_fd( int handle, int fd, int pid )
{
struct console_input *input;
struct screen_buffer *output;
struct object *obj;
int fd_in, fd_out;
if (!(obj = get_handle_obj( current->process, handle, 0, NULL )))
return 0;
if (obj->ops == &console_input_ops)
{
input = (struct console_input *)obj;
output = input->output;
grab_object( output );
}
else if (obj->ops == &screen_buffer_ops)
{
output = (struct screen_buffer *)obj;
input = output->input;
grab_object( input );
}
else
{
SET_ERROR( ERROR_INVALID_HANDLE );
release_object( obj );
return 0;
}
/* can't change the fd if someone is waiting on it */
assert( !input->obj.head );
assert( !output->obj.head );
if ((fd_in = dup(fd)) == -1)
{
file_set_error();
release_object( input );
release_object( output );
return 0;
}
if ((fd_out = dup(fd)) == -1)
{
file_set_error();
close( fd_in );
release_object( input );
release_object( output );
return 0;
}
unregister_select_user( &input->select );
unregister_select_user( &output->select );
close( input->select.fd );
close( output->select.fd );
input->select.fd = fd_in;
output->select.fd = fd_out;
output->pid = pid;
register_select_user( &input->select );
register_select_user( &output->select );
release_object( input );
release_object( output );
return 1;
}
static int get_console_mode( int handle, int *mode )
{
struct object *obj;
int ret = 0;
if (!(obj = get_handle_obj( current->process, handle, GENERIC_READ, NULL )))
return 0;
if (obj->ops == &console_input_ops)
{
*mode = ((struct console_input *)obj)->mode;
ret = 1;
}
else if (obj->ops == &screen_buffer_ops)
{
*mode = ((struct screen_buffer *)obj)->mode;
ret = 1;
}
else SET_ERROR( ERROR_INVALID_HANDLE );
release_object( obj );
return ret;
}
static int set_console_mode( int handle, int mode )
{
struct object *obj;
int ret = 0;
if (!(obj = get_handle_obj( current->process, handle, GENERIC_READ, NULL )))
return 0;
if (obj->ops == &console_input_ops)
{
((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( ERROR_INVALID_HANDLE );
release_object( obj );
return ret;
}
/* set misc console information (output handle only) */
static int set_console_info( int handle, struct set_console_info_request *req, const char *title )
{
struct screen_buffer *console;
if (!(console = (struct screen_buffer *)get_handle_obj( current->process, handle,
GENERIC_WRITE, &screen_buffer_ops )))
return 0;
if (req->mask & SET_CONSOLE_INFO_CURSOR)
{
console->cursor_size = req->cursor_size;
console->cursor_visible = req->cursor_visible;
}
if (req->mask & SET_CONSOLE_INFO_TITLE)
{
if (console->title) free( console->title );
console->title = strdup( title );
}
release_object( console );
return 1;
}
/* get misc console information (output handle only) */
static int get_console_info( int handle, struct get_console_info_reply *reply, const char **title )
{
struct screen_buffer *console;
if (!(console = (struct screen_buffer *)get_handle_obj( current->process, handle,
GENERIC_READ, &screen_buffer_ops )))
return 0;
reply->cursor_size = console->cursor_size;
reply->cursor_visible = console->cursor_visible;
reply->pid = console->pid;
*title = console->title;
release_object( console );
return 1;
}
/* add input events to a console input queue */
static int write_console_input( int handle, int count, INPUT_RECORD *records )
{
INPUT_RECORD *new_rec;
struct console_input *console;
if (!(console = (struct console_input *)get_handle_obj( current->process, handle,
GENERIC_WRITE, &console_input_ops )))
return -1;
if (!(new_rec = realloc( console->records,
(console->recnum + count) * sizeof(INPUT_RECORD) )))
{
SET_ERROR( ERROR_NOT_ENOUGH_MEMORY );
release_object( console );
return -1;
}
console->records = new_rec;
memcpy( new_rec + console->recnum, records, count * sizeof(INPUT_RECORD) );
console->recnum += count;
release_object( console );
return count;
}
/* retrieve a pointer to the console input records */
static int read_console_input( int handle, int count, int flush )
{
struct console_input *console;
if (!(console = (struct console_input *)get_handle_obj( current->process, handle,
GENERIC_READ, &console_input_ops )))
return -1;
if ((count < 0) || (count > console->recnum)) count = console->recnum;
send_reply( current, -1, 1, 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;
}
}
release_object( console );
return count;
}
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 fd=%d\n", console->select.fd );
}
static int console_input_add_queue( struct object *obj, struct wait_queue_entry *entry )
{
struct console_input *console = (struct console_input *)obj;
assert( obj->ops == &console_input_ops );
if (!obj->head) /* first on the queue */
set_select_events( &console->select, READ_EVENT );
add_queue( obj, entry );
return 1;
}
static void console_input_remove_queue( struct object *obj, struct wait_queue_entry *entry )
{
struct console_input *console = (struct console_input *)grab_object(obj);
assert( obj->ops == &console_input_ops );
remove_queue( obj, entry );
if (!obj->head) /* last on the queue is gone */
set_select_events( &console->select, 0 );
release_object( obj );
}
static int console_input_signaled( struct object *obj, struct thread *thread )
{
struct console_input *console = (struct console_input *)obj;
assert( obj->ops == &console_input_ops );
if (check_select_events( &console->select, READ_EVENT ))
{
/* stop waiting on select() if we are signaled */
set_select_events( &console->select, 0 );
return 1;
}
else
{
/* restart waiting on select() if we are no longer signaled */
if (obj->head) set_select_events( &console->select, READ_EVENT );
return 0;
}
}
static int console_input_get_read_fd( struct object *obj )
{
struct console_input *console = (struct console_input *)obj;
assert( obj->ops == &console_input_ops );
return dup( console->select.fd );
}
static int console_get_info( struct object *obj, struct get_file_info_reply *reply )
{
memset( reply, 0, sizeof(*reply) );
reply->type = FILE_TYPE_CHAR;
return 1;
}
static void console_input_destroy( struct object *obj )
{
struct console_input *console = (struct console_input *)obj;
assert( obj->ops == &console_input_ops );
unregister_select_user( &console->select );
close( console->select.fd );
if (console->output) console->output->input = NULL;
free( console );
}
static void screen_buffer_dump( struct object *obj, int verbose )
{
struct screen_buffer *console = (struct screen_buffer *)obj;
assert( obj->ops == &screen_buffer_ops );
fprintf( stderr, "Console screen buffer fd=%d\n", console->select.fd );
}
static int screen_buffer_add_queue( struct object *obj, struct wait_queue_entry *entry )
{
struct screen_buffer *console = (struct screen_buffer *)obj;
assert( obj->ops == &screen_buffer_ops );
if (!obj->head) /* first on the queue */
set_select_events( &console->select, WRITE_EVENT );
add_queue( obj, entry );
return 1;
}
static void screen_buffer_remove_queue( struct object *obj, struct wait_queue_entry *entry )
{
struct screen_buffer *console = (struct screen_buffer *)grab_object(obj);
assert( obj->ops == &screen_buffer_ops );
remove_queue( obj, entry );
if (!obj->head) /* last on the queue is gone */
set_select_events( &console->select, 0 );
release_object( obj );
}
static int screen_buffer_signaled( struct object *obj, struct thread *thread )
{
struct screen_buffer *console = (struct screen_buffer *)obj;
assert( obj->ops == &screen_buffer_ops );
if (check_select_events( &console->select, WRITE_EVENT ))
{
/* stop waiting on select() if we are signaled */
set_select_events( &console->select, 0 );
return 1;
}
else
{
/* restart waiting on select() if we are no longer signaled */
if (obj->head) set_select_events( &console->select, WRITE_EVENT );
return 0;
}
}
static int screen_buffer_get_write_fd( struct object *obj )
{
struct screen_buffer *console = (struct screen_buffer *)obj;
assert( obj->ops == &screen_buffer_ops );
return dup( console->select.fd );
}
static void screen_buffer_destroy( struct object *obj )
{
struct screen_buffer *console = (struct screen_buffer *)obj;
assert( obj->ops == &screen_buffer_ops );
unregister_select_user( &console->select );
close( console->select.fd );
if (console->input) console->input->output = NULL;
if (console->pid) kill( console->pid, SIGTERM );
if (console->title) free( console->title );
free( console );
}
/* allocate a console for the current process */
DECL_HANDLER(alloc_console)
{
alloc_console( current->process );
send_reply( current, -1, 0 );
}
/* free the console of the current process */
DECL_HANDLER(free_console)
{
free_console( current->process );
send_reply( current, -1, 0 );
}
/* open a handle to the process console */
DECL_HANDLER(open_console)
{
struct object *obj;
struct open_console_reply reply = { -1 };
if ((obj = get_console( current->process, req->output )))
{
reply.handle = alloc_handle( current->process, obj, req->access, req->inherit );
release_object( obj );
}
send_reply( current, -1, 1, &reply, sizeof(reply) );
}
/* set info about a console (output only) */
DECL_HANDLER(set_console_info)
{
char *name = (char *)data;
if (!len) name = NULL;
else CHECK_STRING( "set_console_info", name, len );
set_console_info( req->handle, req, name );
send_reply( current, -1, 0 );
}
/* get info about a console (output only) */
DECL_HANDLER(get_console_info)
{
struct get_console_info_reply reply;
const char *title;
get_console_info( req->handle, &reply, &title );
send_reply( current, -1, 2, &reply, sizeof(reply),
title, title ? strlen(title)+1 : 0 );
}
/* set a console fd */
DECL_HANDLER(set_console_fd)
{
set_console_fd( req->handle, fd, req->pid );
send_reply( current, -1, 0 );
}
/* get a console mode (input or output) */
DECL_HANDLER(get_console_mode)
{
struct get_console_mode_reply reply;
get_console_mode( req->handle, &reply.mode );
send_reply( current, -1, 1, &reply, sizeof(reply) );
}
/* set a console mode (input or output) */
DECL_HANDLER(set_console_mode)
{
set_console_mode( req->handle, req->mode );
send_reply( current, -1, 0 );
}
/* add input records to a console input queue */
DECL_HANDLER(write_console_input)
{
struct write_console_input_reply reply;
INPUT_RECORD *records = (INPUT_RECORD *)data;
if (len != req->count * sizeof(INPUT_RECORD))
fatal_protocol_error( "write_console_input: bad length %d for %d records\n",
len, req->count );
reply.written = write_console_input( req->handle, req->count, records );
send_reply( current, -1, 1, &reply, sizeof(reply) );
}
/* fetch input records from a console input queue */
DECL_HANDLER(read_console_input)
{
read_console_input( req->handle, req->count, req->flush );
}