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![Alexandre Julliard](/assets/img/avatar_default.png)
- merged request and reply structures - build requests directly into the buffer to avoid a copy
608 lines
19 KiB
C
608 lines
19 KiB
C
/*
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* Server-side console management
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*
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* Copyright (C) 1998 Alexandre Julliard
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*
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* FIXME: all this stuff is a hack to avoid breaking
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* the client-side console support.
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*/
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#include <assert.h>
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#include <fcntl.h>
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#include <signal.h>
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#include <string.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <sys/errno.h>
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#include <sys/stat.h>
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#include <sys/time.h>
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#include <sys/types.h>
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#include <time.h>
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#include <unistd.h>
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#include "winerror.h"
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#include "winnt.h"
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#include "wincon.h"
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#include "handle.h"
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#include "process.h"
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#include "thread.h"
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#include "request.h"
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struct screen_buffer;
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struct console_input
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{
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struct object obj; /* object header */
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struct select_user select; /* select user */
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int mode; /* input mode */
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struct screen_buffer *output; /* associated screen buffer */
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int recnum; /* number of input records */
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INPUT_RECORD *records; /* input records */
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};
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struct screen_buffer
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{
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struct object obj; /* object header */
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struct select_user select; /* select user */
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int mode; /* output mode */
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struct console_input *input; /* associated console input */
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int cursor_size; /* size of cursor (percentage filled) */
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int cursor_visible;/* cursor visibility flag */
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int pid; /* xterm pid (hack) */
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char *title; /* console title */
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};
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static void console_input_dump( struct object *obj, int verbose );
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static int console_input_add_queue( struct object *obj, struct wait_queue_entry *entry );
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static void console_input_remove_queue( struct object *obj, struct wait_queue_entry *entry );
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static int console_input_signaled( struct object *obj, struct thread *thread );
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static int console_input_get_read_fd( struct object *obj );
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static void console_input_destroy( struct object *obj );
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static void screen_buffer_dump( struct object *obj, int verbose );
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static int screen_buffer_add_queue( struct object *obj, struct wait_queue_entry *entry );
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static void screen_buffer_remove_queue( struct object *obj, struct wait_queue_entry *entry );
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static int screen_buffer_signaled( struct object *obj, struct thread *thread );
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static int screen_buffer_get_write_fd( struct object *obj );
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static void screen_buffer_destroy( struct object *obj );
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/* common routine */
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static int console_get_info( struct object *obj, struct get_file_info_request *req );
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static const struct object_ops console_input_ops =
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{
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sizeof(struct console_input),
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console_input_dump,
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console_input_add_queue,
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console_input_remove_queue,
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console_input_signaled,
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no_satisfied,
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console_input_get_read_fd,
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no_write_fd,
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no_flush,
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console_get_info,
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console_input_destroy
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};
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static const struct object_ops screen_buffer_ops =
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{
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sizeof(struct screen_buffer),
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screen_buffer_dump,
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screen_buffer_add_queue,
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screen_buffer_remove_queue,
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screen_buffer_signaled,
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no_satisfied,
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no_read_fd,
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screen_buffer_get_write_fd,
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no_flush,
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console_get_info,
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screen_buffer_destroy
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};
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static struct object *create_console_input( int fd )
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{
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struct console_input *console_input;
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if ((fd = (fd != -1) ? dup(fd) : dup(0)) == -1)
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{
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file_set_error();
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return NULL;
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}
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if ((console_input = alloc_object( &console_input_ops )))
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{
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console_input->select.fd = fd;
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console_input->select.func = default_select_event;
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console_input->select.private = console_input;
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console_input->mode = ENABLE_PROCESSED_INPUT | ENABLE_LINE_INPUT |
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ENABLE_ECHO_INPUT | ENABLE_MOUSE_INPUT;
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console_input->output = NULL;
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console_input->recnum = 0;
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console_input->records = NULL;
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register_select_user( &console_input->select );
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return &console_input->obj;
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}
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close( fd );
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return NULL;
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}
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static struct object *create_console_output( int fd, struct object *input )
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{
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struct console_input *console_input = (struct console_input *)input;
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struct screen_buffer *screen_buffer;
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if ((fd = (fd != -1) ? dup(fd) : dup(1)) == -1)
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{
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file_set_error();
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return NULL;
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}
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if ((screen_buffer = alloc_object( &screen_buffer_ops )))
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{
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screen_buffer->select.fd = fd;
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screen_buffer->select.func = default_select_event;
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screen_buffer->select.private = screen_buffer;
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screen_buffer->mode = ENABLE_PROCESSED_OUTPUT | ENABLE_WRAP_AT_EOL_OUTPUT;
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screen_buffer->input = console_input;
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screen_buffer->cursor_size = 100;
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screen_buffer->cursor_visible = 1;
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screen_buffer->pid = 0;
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screen_buffer->title = strdup( "Wine console" );
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register_select_user( &screen_buffer->select );
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console_input->output = screen_buffer;
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return &screen_buffer->obj;
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}
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close( fd );
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return NULL;
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}
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/* allocate a console for this process */
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int alloc_console( struct process *process )
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{
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if (process->console_in || process->console_out)
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{
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set_error( ERROR_ACCESS_DENIED );
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return 0;
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}
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if ((process->console_in = create_console_input( -1 )))
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{
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if ((process->console_out = create_console_output( -1, process->console_in )))
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return 1;
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release_object( process->console_in );
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}
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return 0;
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}
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/* free the console for this process */
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int free_console( struct process *process )
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{
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if (process->console_in) release_object( process->console_in );
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if (process->console_out) release_object( process->console_out );
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process->console_in = process->console_out = NULL;
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return 1;
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}
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static int set_console_fd( int handle, int fd_in, int fd_out, int pid )
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{
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struct console_input *input;
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struct screen_buffer *output;
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struct object *obj;
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if (!(obj = get_handle_obj( current->process, handle, 0, NULL )))
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return 0;
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if (obj->ops == &console_input_ops)
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{
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input = (struct console_input *)obj;
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output = input->output;
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grab_object( output );
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}
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else if (obj->ops == &screen_buffer_ops)
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{
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output = (struct screen_buffer *)obj;
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input = output->input;
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grab_object( input );
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}
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else
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{
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set_error( ERROR_INVALID_HANDLE );
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release_object( obj );
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return 0;
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}
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/* can't change the fd if someone is waiting on it */
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assert( !input->obj.head );
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assert( !output->obj.head );
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unregister_select_user( &input->select );
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unregister_select_user( &output->select );
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close( input->select.fd );
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close( output->select.fd );
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input->select.fd = fd_in;
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output->select.fd = fd_out;
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output->pid = pid;
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register_select_user( &input->select );
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register_select_user( &output->select );
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release_object( input );
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release_object( output );
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return 1;
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}
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static int get_console_mode( int handle )
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{
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struct object *obj;
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int ret = 0;
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if ((obj = get_handle_obj( current->process, handle, GENERIC_READ, NULL )))
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{
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if (obj->ops == &console_input_ops)
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ret = ((struct console_input *)obj)->mode;
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else if (obj->ops == &screen_buffer_ops)
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ret = ((struct screen_buffer *)obj)->mode;
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else
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set_error( ERROR_INVALID_HANDLE );
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release_object( obj );
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}
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return ret;
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}
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static int set_console_mode( int handle, int mode )
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{
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struct object *obj;
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int ret = 0;
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if (!(obj = get_handle_obj( current->process, handle, GENERIC_READ, NULL )))
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return 0;
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if (obj->ops == &console_input_ops)
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{
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((struct console_input *)obj)->mode = mode;
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ret = 1;
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}
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else if (obj->ops == &screen_buffer_ops)
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{
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((struct screen_buffer *)obj)->mode = mode;
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ret = 1;
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}
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else set_error( ERROR_INVALID_HANDLE );
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release_object( obj );
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return ret;
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}
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/* set misc console information (output handle only) */
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static int set_console_info( int handle, struct set_console_info_request *req,
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const char *title, size_t len )
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{
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struct screen_buffer *console;
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if (!(console = (struct screen_buffer *)get_handle_obj( current->process, handle,
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GENERIC_WRITE, &screen_buffer_ops )))
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return 0;
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if (req->mask & SET_CONSOLE_INFO_CURSOR)
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{
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console->cursor_size = req->cursor_size;
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console->cursor_visible = req->cursor_visible;
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}
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if (req->mask & SET_CONSOLE_INFO_TITLE)
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{
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char *new_title = mem_alloc( len + 1 );
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if (new_title)
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{
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memcpy( new_title, title, len );
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new_title[len] = 0;
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if (console->title) free( console->title );
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console->title = new_title;
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}
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}
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release_object( console );
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return 1;
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}
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/* add input events to a console input queue */
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static int write_console_input( int handle, int count, INPUT_RECORD *records )
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{
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INPUT_RECORD *new_rec;
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struct console_input *console;
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if (!(console = (struct console_input *)get_handle_obj( current->process, handle,
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GENERIC_WRITE, &console_input_ops )))
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return -1;
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if (!(new_rec = realloc( console->records,
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(console->recnum + count) * sizeof(INPUT_RECORD) )))
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{
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set_error( ERROR_NOT_ENOUGH_MEMORY );
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release_object( console );
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return -1;
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}
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console->records = new_rec;
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memcpy( new_rec + console->recnum, records, count * sizeof(INPUT_RECORD) );
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console->recnum += count;
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release_object( console );
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return count;
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}
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/* retrieve a pointer to the console input records */
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static int read_console_input( int handle, int count, INPUT_RECORD *rec, int max, int flush )
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{
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struct console_input *console;
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if (!(console = (struct console_input *)get_handle_obj( current->process, handle,
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GENERIC_READ, &console_input_ops )))
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return -1;
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if ((count < 0) || (count > console->recnum)) count = console->recnum;
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if (count > max) count = max;
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memcpy( rec, console->records, count * sizeof(INPUT_RECORD) );
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if (flush)
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{
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int i;
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for (i = count; i < console->recnum; i++)
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console->records[i-count] = console->records[i];
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if ((console->recnum -= count) > 0)
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{
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INPUT_RECORD *new_rec = realloc( console->records,
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console->recnum * sizeof(INPUT_RECORD) );
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if (new_rec) console->records = new_rec;
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}
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else
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{
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free( console->records );
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console->records = NULL;
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}
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}
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release_object( console );
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return count;
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}
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static void console_input_dump( struct object *obj, int verbose )
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{
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struct console_input *console = (struct console_input *)obj;
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assert( obj->ops == &console_input_ops );
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fprintf( stderr, "Console input fd=%d\n", console->select.fd );
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}
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static int console_input_add_queue( struct object *obj, struct wait_queue_entry *entry )
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{
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struct console_input *console = (struct console_input *)obj;
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assert( obj->ops == &console_input_ops );
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if (!obj->head) /* first on the queue */
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set_select_events( &console->select, READ_EVENT );
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add_queue( obj, entry );
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return 1;
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}
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static void console_input_remove_queue( struct object *obj, struct wait_queue_entry *entry )
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{
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struct console_input *console = (struct console_input *)grab_object(obj);
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assert( obj->ops == &console_input_ops );
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remove_queue( obj, entry );
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if (!obj->head) /* last on the queue is gone */
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set_select_events( &console->select, 0 );
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release_object( obj );
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}
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static int console_input_signaled( struct object *obj, struct thread *thread )
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{
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struct console_input *console = (struct console_input *)obj;
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assert( obj->ops == &console_input_ops );
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if (check_select_events( &console->select, READ_EVENT ))
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{
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/* stop waiting on select() if we are signaled */
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set_select_events( &console->select, 0 );
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return 1;
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}
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else
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{
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/* restart waiting on select() if we are no longer signaled */
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if (obj->head) set_select_events( &console->select, READ_EVENT );
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return 0;
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}
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}
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static int console_input_get_read_fd( struct object *obj )
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{
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struct console_input *console = (struct console_input *)obj;
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assert( obj->ops == &console_input_ops );
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return dup( console->select.fd );
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}
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static int console_get_info( struct object *obj, struct get_file_info_request *req )
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{
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req->type = FILE_TYPE_CHAR;
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req->attr = 0;
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req->access_time = 0;
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req->write_time = 0;
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req->size_high = 0;
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req->size_low = 0;
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req->links = 0;
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req->index_high = 0;
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req->index_low = 0;
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req->serial = 0;
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return 1;
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}
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static void console_input_destroy( struct object *obj )
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{
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struct console_input *console = (struct console_input *)obj;
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assert( obj->ops == &console_input_ops );
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unregister_select_user( &console->select );
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close( console->select.fd );
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if (console->output) console->output->input = NULL;
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}
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static void screen_buffer_dump( struct object *obj, int verbose )
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{
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struct screen_buffer *console = (struct screen_buffer *)obj;
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assert( obj->ops == &screen_buffer_ops );
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fprintf( stderr, "Console screen buffer fd=%d\n", console->select.fd );
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}
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static int screen_buffer_add_queue( struct object *obj, struct wait_queue_entry *entry )
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{
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struct screen_buffer *console = (struct screen_buffer *)obj;
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assert( obj->ops == &screen_buffer_ops );
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if (!obj->head) /* first on the queue */
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set_select_events( &console->select, WRITE_EVENT );
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add_queue( obj, entry );
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return 1;
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}
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static void screen_buffer_remove_queue( struct object *obj, struct wait_queue_entry *entry )
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{
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struct screen_buffer *console = (struct screen_buffer *)grab_object(obj);
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assert( obj->ops == &screen_buffer_ops );
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remove_queue( obj, entry );
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if (!obj->head) /* last on the queue is gone */
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set_select_events( &console->select, 0 );
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release_object( obj );
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}
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static int screen_buffer_signaled( struct object *obj, struct thread *thread )
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{
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struct screen_buffer *console = (struct screen_buffer *)obj;
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assert( obj->ops == &screen_buffer_ops );
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if (check_select_events( &console->select, WRITE_EVENT ))
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{
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/* stop waiting on select() if we are signaled */
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set_select_events( &console->select, 0 );
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return 1;
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}
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else
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{
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/* restart waiting on select() if we are no longer signaled */
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if (obj->head) set_select_events( &console->select, WRITE_EVENT );
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return 0;
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}
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}
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static int screen_buffer_get_write_fd( struct object *obj )
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{
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struct screen_buffer *console = (struct screen_buffer *)obj;
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assert( obj->ops == &screen_buffer_ops );
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return dup( console->select.fd );
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}
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static void screen_buffer_destroy( struct object *obj )
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{
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struct screen_buffer *console = (struct screen_buffer *)obj;
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assert( obj->ops == &screen_buffer_ops );
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unregister_select_user( &console->select );
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close( console->select.fd );
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if (console->input) console->input->output = NULL;
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if (console->title) free( console->title );
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}
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/* allocate a console for the current process */
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DECL_HANDLER(alloc_console)
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{
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int in = -1, out = -1;
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if (!alloc_console( current->process )) goto done;
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if ((in = alloc_handle( current->process, current->process->console_in,
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req->access, req->inherit )) != -1)
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{
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if ((out = alloc_handle( current->process, current->process->console_out,
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req->access, req->inherit )) != -1)
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goto done; /* everything is fine */
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close_handle( current->process, in );
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in = -1;
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}
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free_console( current->process );
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done:
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req->handle_in = in;
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req->handle_out = out;
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}
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/* free the console of the current process */
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DECL_HANDLER(free_console)
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{
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free_console( current->process );
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|
}
|
|
|
|
/* 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( ERROR_ACCESS_DENIED );
|
|
}
|
|
|
|
/* set info about a console (output only) */
|
|
DECL_HANDLER(set_console_info)
|
|
{
|
|
size_t len = get_req_strlen( req->title );
|
|
set_console_info( req->handle, req, req->title, len );
|
|
}
|
|
|
|
/* get info about a console (output only) */
|
|
DECL_HANDLER(get_console_info)
|
|
{
|
|
struct screen_buffer *console;
|
|
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;
|
|
strcpy( req->title, console->title ? console->title : "" );
|
|
release_object( console );
|
|
}
|
|
}
|
|
|
|
/* 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 = obj->ops->get_read_fd( obj )) == -1)
|
|
{
|
|
release_object( obj );
|
|
return;
|
|
}
|
|
fd_out = obj->ops->get_write_fd( obj );
|
|
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)
|
|
{
|
|
int max = get_req_size( req + 1, sizeof(INPUT_RECORD) );
|
|
int count = req->count;
|
|
|
|
if (count > max) count = max;
|
|
req->written = write_console_input( req->handle, count, (INPUT_RECORD *)(req + 1) );
|
|
}
|
|
|
|
/* fetch input records from a console input queue */
|
|
DECL_HANDLER(read_console_input)
|
|
{
|
|
int max = get_req_size( req + 1, sizeof(INPUT_RECORD) );
|
|
req->read = read_console_input( req->handle, req->count, (INPUT_RECORD *)(req + 1),
|
|
max, req->flush );
|
|
}
|