src/lib/uuid.c

   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 }