src/hci/tui/login_ui.c

   1 /*
   2  * Copyright (C) 2009 Michael Brown <mbrown@fensystems.co.uk>.
   3  *
   4  * This program is free software; you can redistribute it and/or
   5  * modify it under the terms of the GNU General Public License as
   6  * published by the Free Software Foundation; either version 2 of the
   7  * License, or any later version.
   8  *
   9  * This program is distributed in the hope that it will be useful, but
  10  * WITHOUT ANY WARRANTY; without even the implied warranty of
  11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  12  * General Public License for more details.
  13  *
  14  * You should have received a copy of the GNU General Public License
  15  * along with this program; if not, write to the Free Software
  16  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
  17  * 02110-1301, USA.
  18  *
  19  * You can also choose to distribute this program under the terms of
  20  * the Unmodified Binary Distribution Licence (as given in the file
  21  * COPYING.UBDL), provided that you have satisfied its requirements.
  22  */
  23
  24 FILE_LICENCE ( GPL2_OR_LATER_OR_UBDL );
  25
  26 /** @file
  27  *
  28  * Login UI
  29  *
  30  */
  31
  32 #include <string.h>
  33 #include <errno.h>
  34 #include <curses.h>
  35 #include <ipxe/console.h>
  36 #include <ipxe/settings.h>
  37 #include <ipxe/editbox.h>
  38 #include <ipxe/keys.h>
  39 #include <ipxe/ansicol.h>
  40 #include <ipxe/login_ui.h>
  41
  42 /* Screen layout */
  43 #define USERNAME_LABEL_ROW      ( ( LINES / 2U ) - 4U )
  44 #define USERNAME_ROW            ( ( LINES / 2U ) - 2U )
  45 #define PASSWORD_LABEL_ROW      ( ( LINES / 2U ) + 2U )
  46 #define PASSWORD_ROW            ( ( LINES / 2U ) + 4U )
  47 #define LABEL_COL               ( ( COLS / 2U ) - 4U )
  48 #define EDITBOX_COL             ( ( COLS / 2U ) - 10U )
  49 #define EDITBOX_WIDTH           20U
  50
  51 int login_ui ( void ) {
  52         char username[64];
  53         char password[64];
  54         struct edit_box username_box;
  55         struct edit_box password_box;
  56         struct edit_box *current_box = &username_box;
  57         int key;
  58         int rc = -EINPROGRESS;
  59
  60         /* Fetch current setting values */
  61         fetch_string_setting ( NULL, &username_setting, username,
  62                                sizeof ( username ) );
  63         fetch_string_setting ( NULL, &password_setting, password,
  64                                sizeof ( password ) );
  65
  66         /* Initialise UI */
  67         initscr();
  68         start_color();
  69         init_editbox ( &username_box, username, sizeof ( username ), NULL,
  70                        USERNAME_ROW, EDITBOX_COL, EDITBOX_WIDTH, 0 );
  71         init_editbox ( &password_box, password, sizeof ( password ), NULL,
  72                        PASSWORD_ROW, EDITBOX_COL, EDITBOX_WIDTH,
  73                        EDITBOX_STARS );
  74
  75         /* Draw initial UI */
  76         color_set ( CPAIR_NORMAL, NULL );
  77         erase();
  78         attron ( A_BOLD );
  79         mvprintw ( USERNAME_LABEL_ROW, LABEL_COL, "Username:" );
  80         mvprintw ( PASSWORD_LABEL_ROW, LABEL_COL, "Password:" );
  81         attroff ( A_BOLD );
  82         color_set ( CPAIR_EDIT, NULL );
  83         draw_editbox ( &username_box );
  84         draw_editbox ( &password_box );
  85
  86         /* Main loop */
  87         while ( rc == -EINPROGRESS ) {
  88
  89                 draw_editbox ( current_box );
  90
  91                 key = getkey ( 0 );
  92                 switch ( key ) {
  93                 case KEY_DOWN:
  94                         current_box = &password_box;
  95                         break;
  96                 case KEY_UP:
  97                         current_box = &username_box;
  98                         break;
  99                 case TAB:
 100                         current_box = ( ( current_box == &username_box ) ?
 101                                         &password_box : &username_box );
 102                         break;
 103                 case KEY_ENTER:
 104                         if ( current_box == &username_box ) {
 105                                 current_box = &password_box;
 106                         } else {
 107                                 rc = 0;
 108                         }
 109                         break;
 110                 case CTRL_C:
 111                 case ESC:
 112                         rc = -ECANCELED;
 113                         break;
 114                 default:
 115                         edit_editbox ( current_box, key );
 116                         break;
 117                 }
 118         }
 119
 120         /* Terminate UI */
 121         color_set ( CPAIR_NORMAL, NULL );
 122         erase();
 123         endwin();
 124
 125         if ( rc != 0 )
 126                 return rc;
 127
 128         /* Store settings */
 129         if ( ( rc = store_setting ( NULL, &username_setting, username,
 130                                     strlen ( username ) ) ) != 0 )
 131                 return rc;
 132         if ( ( rc = store_setting ( NULL, &password_setting, password,
 133                                     strlen ( password ) ) ) != 0 )
 134                 return rc;
 135
 136         return 0;
 137 }