[login] Add "login" command and UI

src/config/general.h

@@ -100,6 +100,7 @@
 #define IMAGE_CMD		/* Image management commands */
 #define DHCP_CMD		/* DHCP management commands */
 #define SANBOOT_CMD		/* SAN boot commands */
+#define LOGIN_CMD		/* Login command */
 
 /*
  * Obscure configuration options

src/core/config.c

@@ -193,6 +193,9 @@ REQUIRE_OBJECT ( dhcp_cmd );
 #ifdef SANBOOT_CMD
 REQUIRE_OBJECT ( sanboot_cmd );
 #endif
+#ifdef LOGIN_CMD
+REQUIRE_OBJECT ( login_cmd );
+#endif
 
 /*
  * Drag in miscellaneous objects

src/hci/commands/login_cmd.c

@@ -0,0 +1,27 @@
+#include <string.h>
+#include <stdio.h>
+#include <gpxe/command.h>
+#include <gpxe/login_ui.h>
+
+static int login_exec ( int argc, char **argv ) {
+	int rc;
+
+	if ( argc > 1 ) {
+		printf ( "Usage: %s\n"
+			 "Prompt for login credentials\n", argv[0] );
+		return 1;
+	}
+
+	if ( ( rc = login_ui() ) != 0 ) {
+		printf ( "Could not set credentials: %s\n",
+			 strerror ( rc ) );
+		return 1;
+	}
+
+	return 0;
+}
+
+struct command login_command __command = {
+	.name = "login",
+	.exec = login_exec,
+};

src/hci/tui/login_ui.c

@@ -0,0 +1,135 @@
+/*
+ * Copyright (C) 2009 Michael Brown <mbrown@fensystems.co.uk>.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation; either version 2 of the
+ * License, or any later version.
+ *
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ */
+
+/** @file
+ *
+ * Login UI
+ *
+ */
+
+#include <string.h>
+#include <errno.h>
+#include <curses.h>
+#include <console.h>
+#include <gpxe/settings.h>
+#include <gpxe/editbox.h>
+#include <gpxe/keys.h>
+#include <gpxe/login_ui.h>
+
+/* Colour pairs */
+#define CPAIR_NORMAL		1
+#define CPAIR_LABEL		2
+#define CPAIR_EDITBOX		3
+
+/* Screen layout */
+#define USERNAME_LABEL_ROW	8
+#define USERNAME_ROW		10
+#define PASSWORD_LABEL_ROW	14
+#define PASSWORD_ROW		16
+#define LABEL_COL		36
+#define EDITBOX_COL		30
+#define EDITBOX_WIDTH		20
+
+int login_ui ( void ) {
+	char username[64];
+	char password[64];
+	struct edit_box username_box;
+	struct edit_box password_box;
+	struct edit_box *current_box = &username_box;
+	int key;
+	int rc = -EINPROGRESS;
+
+	/* Fetch current setting values */
+	fetch_string_setting ( NULL, &username_setting, username,
+			       sizeof ( username ) );
+	fetch_string_setting ( NULL, &password_setting, password,
+			       sizeof ( password ) );
+
+	/* Initialise UI */
+	initscr();
+	start_color();
+	init_pair ( CPAIR_NORMAL, COLOR_WHITE, COLOR_BLACK );
+	init_pair ( CPAIR_LABEL, COLOR_WHITE, COLOR_BLACK );
+	init_pair ( CPAIR_EDITBOX, COLOR_WHITE, COLOR_BLUE );
+	init_editbox ( &username_box, username, sizeof ( username ), NULL,
+		       USERNAME_ROW, EDITBOX_COL, EDITBOX_WIDTH, 0 );
+	init_editbox ( &password_box, password, sizeof ( password ), NULL,
+		       PASSWORD_ROW, EDITBOX_COL, EDITBOX_WIDTH,
+		       EDITBOX_STARS );
+
+	/* Draw initial UI */
+	erase();
+	color_set ( CPAIR_LABEL, NULL );
+	mvprintw ( USERNAME_LABEL_ROW, LABEL_COL, "Username:" );
+	mvprintw ( PASSWORD_LABEL_ROW, LABEL_COL, "Password:" );
+	color_set ( CPAIR_EDITBOX, NULL );
+	draw_editbox ( &username_box );
+	draw_editbox ( &password_box );
+
+	/* Main loop */
+	while ( rc == -EINPROGRESS ) {
+
+		draw_editbox ( current_box );
+
+		key = getkey();
+		switch ( key ) {
+		case KEY_DOWN:
+			current_box = &password_box;
+			break;
+		case KEY_UP:
+			current_box = &username_box;
+			break;
+		case TAB:
+			current_box = ( ( current_box == &username_box ) ?
+					&password_box : &username_box );
+			break;
+		case KEY_ENTER:
+			if ( current_box == &username_box ) {
+				current_box = &password_box;
+			} else {
+				rc = 0;
+			}
+			break;
+		case CTRL_C:
+		case ESC:
+			rc = -ECANCELED;
+			break;
+		default:
+			edit_editbox ( current_box, key );
+			break;
+		}
+	}
+
+	/* Terminate UI */
+	color_set ( CPAIR_NORMAL, NULL );
+	erase();
+	endwin();
+
+	if ( rc != 0 )
+		return rc;
+
+	/* Store settings */
+	if ( ( rc = store_setting ( NULL, &username_setting, username,
+				    strlen ( username ) ) ) != 0 )
+		return rc;
+	if ( ( rc = store_setting ( NULL, &password_setting, password,
+				    strlen ( password ) ) ) != 0 )
+		return rc;
+
+	return 0;
+}

src/include/gpxe/errfile.h

@@ -171,6 +171,7 @@
 #define ERRFILE_efi_smbios	      ( ERRFILE_OTHER | 0x00140000 )
 #define ERRFILE_pxemenu		      ( ERRFILE_OTHER | 0x00150000 )
 #define ERRFILE_x509		      ( ERRFILE_OTHER | 0x00160000 )
+#define ERRFILE_login_ui	      ( ERRFILE_OTHER | 0x00170000 )
 
 /** @} */
 

src/include/gpxe/login_ui.h

@@ -0,0 +1,12 @@
+#ifndef _GPXE_LOGIN_UI_H
+#define _GPXE_LOGIN_UI_H
+
+/** @file
+ *
+ * Login UI
+ *
+ */
+
+extern int login_ui ( void );
+
+#endif /* _GPXE_LOGIN_UI_H */