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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 "config.h"
#include <assert.h>
#include <fcntl.h>
#include <signal.h>
#include <string.h>
#include <stdio.h>
#include <stdlib.h>
#ifdef HAVE_SYS_ERRNO_H
#include <sys/errno.h>
#endif
#include <sys/stat.h>
#include <sys/time.h>
#include <sys/types.h>
#include <time.h>
#include <unistd.h>
#include "winnt.h"
#include "winbase.h"
#include "wincon.h"
#include "handle.h"
#include "process.h"
#include "thread.h"
#include "request.h"
struct screen_buffer;
struct console_input
{
struct object obj; /* object header */
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 */
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_get_poll_events( struct object *obj );
static int console_input_get_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_get_poll_events( struct object *obj );
static int screen_buffer_get_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_request *req );
static const struct object_ops console_input_ops =
{
sizeof(struct console_input), /* size */
console_input_dump, /* dump */
default_poll_add_queue, /* add_queue */
default_poll_remove_queue, /* remove_queue */
default_poll_signaled, /* signaled */
no_satisfied, /* satisfied */
console_input_get_poll_events, /* get_poll_events */
default_poll_event, /* poll_event */
console_input_get_fd, /* get_fd */
no_flush, /* flush */
console_get_info, /* get_file_info */
console_input_destroy /* destroy */
};
static const struct object_ops screen_buffer_ops =
{
sizeof(struct screen_buffer), /* size */
screen_buffer_dump, /* dump */
default_poll_add_queue, /* add_queue */
default_poll_remove_queue, /* remove_queue */
default_poll_signaled, /* signaled */
no_satisfied, /* satisfied */
screen_buffer_get_poll_events, /* get_poll_events */
default_poll_event, /* poll_event */
screen_buffer_get_fd, /* get_fd */
no_flush, /* flush */
console_get_info, /* get_file_info */
screen_buffer_destroy /* destroy */
};
static struct object *create_console_input( int fd )
{
struct console_input *console_input;
if ((fd = (fd != -1) ? dup(fd) : dup(0)) == -1)
{
file_set_error();
return NULL;
}
if (!(console_input = alloc_object( &console_input_ops, fd ))) return NULL;
console_input->mode = ENABLE_PROCESSED_INPUT | ENABLE_LINE_INPUT |
ENABLE_ECHO_INPUT | ENABLE_MOUSE_INPUT;
console_input->output = NULL;
console_input->recnum = 0;
console_input->records = NULL;
return &console_input->obj;
}
static struct object *create_console_output( int fd, struct object *input )
{
struct console_input *console_input = (struct console_input *)input;
struct screen_buffer *screen_buffer;
if ((fd = (fd != -1) ? dup(fd) : dup(1)) == -1)
{
file_set_error();
return NULL;
}
if (!(screen_buffer = alloc_object( &screen_buffer_ops, fd ))) 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->pid = 0;
screen_buffer->title = strdup( "Wine console" );
console_input->output = screen_buffer;
return &screen_buffer->obj;
}
/* allocate a console for this process */
int alloc_console( struct process *process )
{
if (process->console_in || process->console_out)
{
set_error( STATUS_ACCESS_DENIED );
return 0;
}
if ((process->console_in = create_console_input( -1 )))
{
if ((process->console_out = create_console_output( -1, process->console_in )))
return 1;
release_object( process->console_in );
}
return 0;
}
/* free the console for this process */
int free_console( struct process *process )
{
if (process->console_in) release_object( process->console_in );
if (process->console_out) release_object( process->console_out );
process->console_in = process->console_out = NULL;
return 1;
}
static int set_console_fd( int handle, int fd_in, int fd_out, int pid )
{
struct console_input *input;
struct screen_buffer *output;
struct object *obj;
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( STATUS_OBJECT_TYPE_MISMATCH );
release_object( obj );
return 0;
}
/* can't change the fd if someone is waiting on it */
assert( !input->obj.head );
assert( !output->obj.head );
change_select_fd( &input->obj, fd_in );
change_select_fd( &output->obj, fd_out );
output->pid = pid;
release_object( input );
release_object( output );
return 1;
}
static int get_console_mode( int handle )
{
struct object *obj;
int ret = 0;
if ((obj = get_handle_obj( current->process, handle, GENERIC_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;
}
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( STATUS_OBJECT_TYPE_MISMATCH );
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, size_t len )
{
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)
{
char *new_title = mem_alloc( len + 1 );
if (new_title)
{
memcpy( new_title, title, len );
new_title[len] = 0;
if (console->title) free( console->title );
console->title = new_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( STATUS_NO_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, INPUT_RECORD *rec, 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)
{
/* 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;
memcpy( rec, 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->obj.fd );
}
static int console_input_get_poll_events( struct object *obj )
{
return POLLIN;
}
static int console_input_get_fd( struct object *obj )
{
struct console_input *console = (struct console_input *)obj;
assert( obj->ops == &console_input_ops );
return console->obj.fd;
}
static int console_get_info( struct object *obj, struct get_file_info_request *req )
{
req->type = FILE_TYPE_CHAR;
req->attr = 0;
req->access_time = 0;
req->write_time = 0;
req->size_high = 0;
req->size_low = 0;
req->links = 0;
req->index_high = 0;
req->index_low = 0;
req->serial = 0;
return 1;
}
static void console_input_destroy( struct object *obj )
{
struct console_input *console = (struct console_input *)obj;
assert( obj->ops == &console_input_ops );
if (console->output) console->output->input = NULL;
}
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->obj.fd );
}
static int screen_buffer_get_poll_events( struct object *obj )
{
return POLLOUT;
}
static int screen_buffer_get_fd( struct object *obj )
{
struct screen_buffer *console = (struct screen_buffer *)obj;
assert( obj->ops == &screen_buffer_ops );
return console->obj.fd;
}
static void screen_buffer_destroy( struct object *obj )
{
struct screen_buffer *console = (struct screen_buffer *)obj;
assert( obj->ops == &screen_buffer_ops );
if (console->input) console->input->output = NULL;
if (console->title) free( console->title );
}
/* allocate a console for the current process */
DECL_HANDLER(alloc_console)
{
int in = -1, out = -1;
if (!alloc_console( current->process )) goto done;
if ((in = alloc_handle( current->process, current->process->console_in,
req->access, req->inherit )) != -1)
{
if ((out = alloc_handle( current->process, current->process->console_out,
req->access, req->inherit )) != -1)
goto done; /* everything is fine */
close_handle( current->process, in, NULL );
in = -1;
}
free_console( current->process );
done:
req->handle_in = in;
req->handle_out = out;
}
/* free the console of the current process */
DECL_HANDLER(free_console)
{
free_console( current->process );
}
/* open a handle to the process console */
DECL_HANDLER(open_console)
{
struct object *obj= req->output ? current->process->console_out : current->process->console_in;
if (obj) req->handle = alloc_handle( current->process, obj, req->access, req->inherit );
else set_error( STATUS_ACCESS_DENIED );
}
/* set info about a console (output only) */
DECL_HANDLER(set_console_info)
{
set_console_info( req->handle, req, get_req_data(req), get_req_data_size(req) );
}
/* get info about a console (output only) */
DECL_HANDLER(get_console_info)
{
struct screen_buffer *console;
size_t len = 0;
if ((console = (struct screen_buffer *)get_handle_obj( current->process, req->handle,
GENERIC_READ, &screen_buffer_ops )))
{
req->cursor_size = console->cursor_size;
req->cursor_visible = console->cursor_visible;
req->pid = console->pid;
if (console->title)
{
len = strlen( console->title );
if (len > get_req_data_size(req)) len = get_req_data_size(req);
memcpy( get_req_data(req), console->title, len );
}
release_object( console );
}
set_req_data_size( req, len );
}
/* set a console fd */
DECL_HANDLER(set_console_fd)
{
struct object *obj;
int fd_in, fd_out;
if (!(obj = get_handle_obj( current->process, req->file_handle,
GENERIC_READ | GENERIC_WRITE, NULL ))) return;
if ((fd_in = dup(obj->ops->get_fd( obj ))) == -1)
{
release_object( obj );
return;
}
fd_out = dup( fd_in );
release_object( obj );
if (fd_out != -1)
{
if (set_console_fd( req->handle, fd_in, fd_out, req->pid )) return;
close( fd_out );
}
close( fd_in );
}
/* get a console mode (input or output) */
DECL_HANDLER(get_console_mode)
{
req->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)
{
req->written = write_console_input( req->handle, get_req_data_size(req) / sizeof(INPUT_RECORD),
get_req_data(req) );
}
/* fetch input records from a console input queue */
DECL_HANDLER(read_console_input)
{
size_t size = get_req_data_size(req) / sizeof(INPUT_RECORD);
int res = read_console_input( req->handle, size, get_req_data(req), req->flush );
/* if size was 0 we didn't fetch anything */
if (size) set_req_data_size( req, res * sizeof(INPUT_RECORD) );
req->read = res;
}
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