1  /* SPDX-License-Identifier: GPL-2.0-only */
 2  
 3  #include <stdint.h>
 4  #include <lib.h>
 5  #include <uuid.h>
 6  
 7  int parse_uuid(uint8_t *const uuid, const char *const uuid_str)
 8  {
 9  	const uint8_t order[] = { 3, 2, 1, 0, 5, 4, 7, 6, 8, 9, 10, 11, 12, 13, 14, 15 };
10  	uint8_t uuid_binstr[UUID_LEN];
11  	unsigned int i;
12  
13  	if (strlen(uuid_str) != UUID_STRLEN)
14  		return -1;
15  	if (uuid_str[8] != '-' || uuid_str[13] != '-' ||
16  	    uuid_str[18] != '-' || uuid_str[23] != '-')
17  		return -1;
18  	if (hexstrtobin(uuid_str, uuid_binstr, UUID_LEN) != UUID_LEN)
19  		return -1;
20  	for (i = 0; i < UUID_LEN; ++i)
21  		uuid[i] = uuid_binstr[order[i]];
22  
23  	return 0;
24  }