mirror of
https://github.com/vanhoefm/fragattacks.git
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78 lines
1.5 KiB
C
78 lines
1.5 KiB
C
/*
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* Universally Unique IDentifier (UUID)
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* Copyright (c) 2008, Jouni Malinen <j@w1.fi>
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License version 2 as
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* published by the Free Software Foundation.
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*
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* Alternatively, this software may be distributed under the terms of BSD
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* license.
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*
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* See README and COPYING for more details.
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*/
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#include "includes.h"
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#include "common.h"
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#include "uuid.h"
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int uuid_str2bin(const char *str, u8 *bin)
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{
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const char *pos;
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u8 *opos;
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pos = str;
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opos = bin;
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if (hexstr2bin(pos, opos, 4))
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return -1;
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pos += 8;
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opos += 4;
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if (*pos++ != '-' || hexstr2bin(pos, opos, 2))
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return -1;
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pos += 4;
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opos += 2;
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if (*pos++ != '-' || hexstr2bin(pos, opos, 2))
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return -1;
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pos += 4;
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opos += 2;
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if (*pos++ != '-' || hexstr2bin(pos, opos, 2))
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return -1;
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pos += 4;
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opos += 2;
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if (*pos++ != '-' || hexstr2bin(pos, opos, 6))
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return -1;
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return 0;
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}
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int uuid_bin2str(const u8 *bin, char *str, size_t max_len)
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{
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int len;
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len = os_snprintf(str, max_len, "%02x%02x%02x%02x-%02x%02x-%02x%02x-"
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"%02x%02x-%02x%02x%02x%02x%02x%02x",
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bin[0], bin[1], bin[2], bin[3],
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bin[4], bin[5], bin[6], bin[7],
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bin[8], bin[9], bin[10], bin[11],
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bin[12], bin[13], bin[14], bin[15]);
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if (len < 0 || (size_t) len >= max_len)
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return -1;
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return 0;
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}
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int is_nil_uuid(const u8 *uuid)
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{
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int i;
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for (i = 0; i < UUID_LEN; i++)
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if (uuid[i])
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return 0;
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return 1;
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}
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