qemu/roms/ipxe/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
  20 FILE_LICENCE ( GPL2_OR_LATER );
  21
  22 /** @file
  23  *
  24  * Login UI
  25  *
  26  */
  27
  28 #include <string.h>
  29 #include <errno.h>
  30 #include <curses.h>
  31 #include <ipxe/console.h>
  32 #include <ipxe/settings.h>
  33 #include <ipxe/editbox.h>
  34 #include <ipxe/keys.h>
  35 #include <ipxe/ansicol.h>
  36 #include <ipxe/login_ui.h>
  37
  38 /* Screen layout */
  39 #define USERNAME_LABEL_ROW      ( ( LINES / 2U ) - 4U )
  40 #define USERNAME_ROW            ( ( LINES / 2U ) - 2U )
  41 #define PASSWORD_LABEL_ROW      ( ( LINES / 2U ) + 2U )
  42 #define PASSWORD_ROW            ( ( LINES / 2U ) + 4U )
  43 #define LABEL_COL               ( ( COLS / 2U ) - 4U )
  44 #define EDITBOX_COL             ( ( COLS / 2U ) - 10U )
  45 #define EDITBOX_WIDTH           20U
  46
  47 int login_ui ( void ) {
  48         char username[64];
  49         char password[64];
  50         struct edit_box username_box;
  51         struct edit_box password_box;
  52         struct edit_box *current_box = &username_box;
  53         int key;
  54         int rc = -EINPROGRESS;
  55
  56         /* Fetch current setting values */
  57         fetch_string_setting ( NULL, &username_setting, username,
  58                                sizeof ( username ) );
  59         fetch_string_setting ( NULL, &password_setting, password,
  60                                sizeof ( password ) );
  61
  62         /* Initialise UI */
  63         initscr();
  64         start_color();
  65         init_editbox ( &username_box, username, sizeof ( username ), NULL,
  66                        USERNAME_ROW, EDITBOX_COL, EDITBOX_WIDTH, 0 );
  67         init_editbox ( &password_box, password, sizeof ( password ), NULL,
  68                        PASSWORD_ROW, EDITBOX_COL, EDITBOX_WIDTH,
  69                        EDITBOX_STARS );
  70
  71         /* Draw initial UI */
  72         color_set ( CPAIR_NORMAL, NULL );
  73         erase();
  74         attron ( A_BOLD );
  75         mvprintw ( USERNAME_LABEL_ROW, LABEL_COL, "Username:" );
  76         mvprintw ( PASSWORD_LABEL_ROW, LABEL_COL, "Password:" );
  77         attroff ( A_BOLD );
  78         color_set ( CPAIR_EDIT, NULL );
  79         draw_editbox ( &username_box );
  80         draw_editbox ( &password_box );
  81
  82         /* Main loop */
  83         while ( rc == -EINPROGRESS ) {
  84
  85                 draw_editbox ( current_box );
  86
  87                 key = getkey ( 0 );
  88                 switch ( key ) {
  89                 case KEY_DOWN:
  90                         current_box = &password_box;
  91                         break;
  92                 case KEY_UP:
  93                         current_box = &username_box;
  94                         break;
  95                 case TAB:
  96                         current_box = ( ( current_box == &username_box ) ?
  97                                         &password_box : &username_box );
  98                         break;
  99                 case KEY_ENTER:
 100                         if ( current_box == &username_box ) {
 101                                 current_box = &password_box;
 102                         } else {
 103                                 rc = 0;
 104                         }
 105                         break;
 106                 case CTRL_C:
 107                 case ESC:
 108                         rc = -ECANCELED;
 109                         break;
 110                 default:
 111                         edit_editbox ( current_box, key );
 112                         break;
 113                 }
 114         }
 115
 116         /* Terminate UI */
 117         color_set ( CPAIR_NORMAL, NULL );
 118         erase();
 119         endwin();
 120
 121         if ( rc != 0 )
 122                 return rc;
 123
 124         /* Store settings */
 125         if ( ( rc = store_setting ( NULL, &username_setting, username,
 126                                     strlen ( username ) ) ) != 0 )
 127                 return rc;
 128         if ( ( rc = store_setting ( NULL, &password_setting, password,
 129                                     strlen ( password ) ) ) != 0 )
 130                 return rc;
 131
 132         return 0;
 133 }