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/login_ui.h>
  36 #include <config/colour.h>
  37
  38 /* Colour pairs */
  39 #define CPAIR_NORMAL            1
  40 #define CPAIR_EDIT              2
  41
  42 /* Screen layout */
  43 #define USERNAME_LABEL_ROW      8
  44 #define USERNAME_ROW            10
  45 #define PASSWORD_LABEL_ROW      14
  46 #define PASSWORD_ROW            16
  47 #define LABEL_COL               36
  48 #define EDITBOX_COL             30
  49 #define EDITBOX_WIDTH           20
  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_pair ( CPAIR_NORMAL, COLOR_NORMAL_FG, COLOR_NORMAL_BG );
  70         init_pair ( CPAIR_EDIT, COLOR_EDIT_FG, COLOR_EDIT_BG );
  71         init_editbox ( &username_box, username, sizeof ( username ), NULL,
  72                        USERNAME_ROW, EDITBOX_COL, EDITBOX_WIDTH, 0 );
  73         init_editbox ( &password_box, password, sizeof ( password ), NULL,
  74                        PASSWORD_ROW, EDITBOX_COL, EDITBOX_WIDTH,
  75                        EDITBOX_STARS );
  76
  77         /* Draw initial UI */
  78         color_set ( CPAIR_NORMAL, NULL );
  79         erase();
  80         attron ( A_BOLD );
  81         mvprintw ( USERNAME_LABEL_ROW, LABEL_COL, "Username:" );
  82         mvprintw ( PASSWORD_LABEL_ROW, LABEL_COL, "Password:" );
  83         attroff ( A_BOLD );
  84         color_set ( CPAIR_EDIT, NULL );
  85         draw_editbox ( &username_box );
  86         draw_editbox ( &password_box );
  87
  88         /* Main loop */
  89         while ( rc == -EINPROGRESS ) {
  90
  91                 draw_editbox ( current_box );
  92
  93                 key = getkey ( 0 );
  94                 switch ( key ) {
  95                 case KEY_DOWN:
  96                         current_box = &password_box;
  97                         break;
  98                 case KEY_UP:
  99                         current_box = &username_box;
 100                         break;
 101                 case TAB:
 102                         current_box = ( ( current_box == &username_box ) ?
 103                                         &password_box : &username_box );
 104                         break;
 105                 case KEY_ENTER:
 106                         if ( current_box == &username_box ) {
 107                                 current_box = &password_box;
 108                         } else {
 109                                 rc = 0;
 110                         }
 111                         break;
 112                 case CTRL_C:
 113                 case ESC:
 114                         rc = -ECANCELED;
 115                         break;
 116                 default:
 117                         edit_editbox ( current_box, key );
 118                         break;
 119                 }
 120         }
 121
 122         /* Terminate UI */
 123         color_set ( CPAIR_NORMAL, NULL );
 124         erase();
 125         endwin();
 126
 127         if ( rc != 0 )
 128                 return rc;
 129
 130         /* Store settings */
 131         if ( ( rc = store_setting ( NULL, &username_setting, username,
 132                                     strlen ( username ) ) ) != 0 )
 133                 return rc;
 134         if ( ( rc = store_setting ( NULL, &password_setting, password,
 135                                     strlen ( password ) ) ) != 0 )
 136                 return rc;
 137
 138         return 0;
 139 }