[http] Allow for domain names within NTLM user names
[ipxe.git] / src / core / netbios.c
1 /*
2 * Copyright (C) 2018 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 * NetBIOS user names
29 *
30 */
31
32 #include <stddef.h>
33 #include <string.h>
34 #include <ipxe/netbios.h>
35
36 /**
37 * Split NetBIOS [domain\]username into separate domain and username fields
38 *
39 * @v username NetBIOS [domain\]username string
40 * @ret domain Domain portion of string, or NULL if no domain present
41 *
42 * This function modifies the original string by removing the
43 * separator. The caller may restore the string using
44 * netbios_domain_undo().
45 */
46 const char * netbios_domain ( char **username ) {
47 char *domain_username = *username;
48 char *sep;
49
50 /* Find separator, if present */
51 sep = strchr ( domain_username, '\\' );
52 if ( ! sep )
53 return NULL;
54
55 /* Overwrite separator with NUL terminator and update username string */
56 *sep = '\0';
57 *username = ( sep + 1 );
58
59 return domain_username;
60 }