mirror of
https://github.com/ipxe/ipxe
synced 2026-01-29 20:39:06 +03:00
da7b266289
Add uuid_aton() to parse a UUID value from a string (analogous to inet_aton(), inet6_aton(), sock_aton(), etc), treating it as a 32-digit hex string with optional hyphen separators. The placement of the separators is not checked: each byte within the hex string may be separated by a hyphen, or not separated at all. Add dedicated self-tests for UUID parsing and formatting (already partially covered by the ":uuid" and ":guid" settings self-tests). Signed-off-by: Michael Brown <mcb30@ipxe.org>
84 lines
2.2 KiB
C
84 lines
2.2 KiB
C
/*
|
|
* Copyright (C) 2007 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., 51 Franklin Street, Fifth Floor, Boston, MA
|
|
* 02110-1301, USA.
|
|
*
|
|
* You can also choose to distribute this program under the terms of
|
|
* the Unmodified Binary Distribution Licence (as given in the file
|
|
* COPYING.UBDL), provided that you have satisfied its requirements.
|
|
*/
|
|
|
|
FILE_LICENCE ( GPL2_OR_LATER_OR_UBDL );
|
|
|
|
#include <stdint.h>
|
|
#include <stdio.h>
|
|
#include <errno.h>
|
|
#include <byteswap.h>
|
|
#include <ipxe/base16.h>
|
|
#include <ipxe/uuid.h>
|
|
|
|
/** @file
|
|
*
|
|
* Universally unique IDs
|
|
*
|
|
*/
|
|
|
|
/**
|
|
* Convert UUID to printable string
|
|
*
|
|
* @v uuid UUID
|
|
* @ret string UUID in canonical form
|
|
*/
|
|
const char * uuid_ntoa ( const union uuid *uuid ) {
|
|
static char buf[37]; /* "00000000-0000-0000-0000-000000000000" */
|
|
|
|
sprintf ( buf, "%08x-%04x-%04x-%04x-%02x%02x%02x%02x%02x%02x",
|
|
be32_to_cpu ( uuid->canonical.a ),
|
|
be16_to_cpu ( uuid->canonical.b ),
|
|
be16_to_cpu ( uuid->canonical.c ),
|
|
be16_to_cpu ( uuid->canonical.d ),
|
|
uuid->canonical.e[0], uuid->canonical.e[1],
|
|
uuid->canonical.e[2], uuid->canonical.e[3],
|
|
uuid->canonical.e[4], uuid->canonical.e[5] );
|
|
return buf;
|
|
}
|
|
|
|
/**
|
|
* Parse UUID
|
|
*
|
|
* @v string UUID string
|
|
* @v uuid UUID to fill in
|
|
* @ret rc Return status code
|
|
*/
|
|
int uuid_aton ( const char *string, union uuid *uuid ) {
|
|
int len;
|
|
int rc;
|
|
|
|
/* Decode as hex string with optional '-' separator */
|
|
len = hex_decode ( ( '-' | HEX_DECODE_OPTIONAL ), string, uuid->raw,
|
|
sizeof ( *uuid ) );
|
|
if ( len < 0 ) {
|
|
rc = len;
|
|
return rc;
|
|
}
|
|
|
|
/* Check length */
|
|
if ( len != sizeof ( *uuid ) )
|
|
return -EINVAL;
|
|
|
|
return 0;
|
|
}
|