[spi] Add address-length autodetection to the SPI bit-bashing code
[people/asdlkf/gpxe.git] / 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., 675 Mass Ave, Cambridge, MA 02139, USA.
17  */
18
19 FILE_LICENCE ( GPL2_OR_LATER );
20
21 /** @file
22  *
23  * Login UI
24  *
25  */
26
27 #include <string.h>
28 #include <errno.h>
29 #include <curses.h>
30 #include <console.h>
31 #include <gpxe/settings.h>
32 #include <gpxe/editbox.h>
33 #include <gpxe/keys.h>
34 #include <gpxe/login_ui.h>
35
36 /* Colour pairs */
37 #define CPAIR_NORMAL            1
38 #define CPAIR_LABEL             2
39 #define CPAIR_EDITBOX           3
40
41 /* Screen layout */
42 #define USERNAME_LABEL_ROW      8
43 #define USERNAME_ROW            10
44 #define PASSWORD_LABEL_ROW      14
45 #define PASSWORD_ROW            16
46 #define LABEL_COL               36
47 #define EDITBOX_COL             30
48 #define EDITBOX_WIDTH           20
49
50 int login_ui ( void ) {
51         char username[64];
52         char password[64];
53         struct edit_box username_box;
54         struct edit_box password_box;
55         struct edit_box *current_box = &username_box;
56         int key;
57         int rc = -EINPROGRESS;
58
59         /* Fetch current setting values */
60         fetch_string_setting ( NULL, &username_setting, username,
61                                sizeof ( username ) );
62         fetch_string_setting ( NULL, &password_setting, password,
63                                sizeof ( password ) );
64
65         /* Initialise UI */
66         initscr();
67         start_color();
68         init_pair ( CPAIR_NORMAL, COLOR_WHITE, COLOR_BLACK );
69         init_pair ( CPAIR_LABEL, COLOR_WHITE, COLOR_BLACK );
70         init_pair ( CPAIR_EDITBOX, COLOR_WHITE, COLOR_BLUE );
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         erase();
79         color_set ( CPAIR_LABEL, NULL );
80         mvprintw ( USERNAME_LABEL_ROW, LABEL_COL, "Username:" );
81         mvprintw ( PASSWORD_LABEL_ROW, LABEL_COL, "Password:" );
82         color_set ( CPAIR_EDITBOX, 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();
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 }