1 /* 2 * Universally Unique IDentifier (UUID) 3 * Copyright (c) 2008, Jouni Malinen <j (at) w1.fi> 4 * 5 * This program is free software; you can redistribute it and/or modify 6 * it under the terms of the GNU General Public License version 2 as 7 * published by the Free Software Foundation. 8 * 9 * Alternatively, this software may be distributed under the terms of BSD 10 * license. 11 * 12 * See README and COPYING for more details. 13 */ 14 15 #include "includes.h" 16 17 #include "common.h" 18 #include "uuid.h" 19 20 int uuid_str2bin(const char *str, u8 *bin) 21 { 22 const char *pos; 23 u8 *opos; 24 25 pos = str; 26 opos = bin; 27 28 if (hexstr2bin(pos, opos, 4)) 29 return -1; 30 pos += 8; 31 opos += 4; 32 33 if (*pos++ != '-' || hexstr2bin(pos, opos, 2)) 34 return -1; 35 pos += 4; 36 opos += 2; 37 38 if (*pos++ != '-' || hexstr2bin(pos, opos, 2)) 39 return -1; 40 pos += 4; 41 opos += 2; 42 43 if (*pos++ != '-' || hexstr2bin(pos, opos, 2)) 44 return -1; 45 pos += 4; 46 opos += 2; 47 48 if (*pos++ != '-' || hexstr2bin(pos, opos, 6)) 49 return -1; 50 51 return 0; 52 } 53 54 55 int uuid_bin2str(const u8 *bin, char *str, size_t max_len) 56 { 57 int len; 58 len = os_snprintf(str, max_len, "%02x%02x%02x%02x-%02x%02x-%02x%02x-" 59 "%02x%02x-%02x%02x%02x%02x%02x%02x", 60 bin[0], bin[1], bin[2], bin[3], 61 bin[4], bin[5], bin[6], bin[7], 62 bin[8], bin[9], bin[10], bin[11], 63 bin[12], bin[13], bin[14], bin[15]); 64 if (len < 0 || (size_t) len >= max_len) 65 return -1; 66 return 0; 67 } 68 69 70 int is_nil_uuid(const u8 *uuid) 71 { 72 int i; 73 for (i = 0; i < UUID_LEN; i++) 74 if (uuid[i]) 75 return 0; 76 return 1; 77 } 78
