src/libs/uuid/parse.c

   1 /*
   2  * parse.c --- UUID parsing
   3  *
   4  * Copyright (C) 1996, 1997 Theodore Ts'o.
   5  *
   6  * %Begin-Header%
   7  * Redistribution and use in source and binary forms, with or without
   8  * modification, are permitted provided that the following conditions
   9  * are met:
  10  * 1. Redistributions of source code must retain the above copyright
  11  *    notice, and the entire permission notice in its entirety,
  12  *    including the disclaimer of warranties.
  13  * 2. Redistributions in binary form must reproduce the above copyright
  14  *    notice, this list of conditions and the following disclaimer in the
  15  *    documentation and/or other materials provided with the distribution.
  16  * 3. The name of the author may not be used to endorse or promote
  17  *    products derived from this software without specific prior
  18  *    written permission.
  19  *
  20  * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED
  21  * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
  22  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE, ALL OF
  23  * WHICH ARE HEREBY DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR BE
  24  * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
  25  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT
  26  * OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
  27  * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
  28  * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  29  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE
  30  * USE OF THIS SOFTWARE, EVEN IF NOT ADVISED OF THE POSSIBILITY OF SUCH
  31  * DAMAGE.
  32  * %End-Header%
  33  */
  34
  35 #include <stdlib.h>
  36 #include <stdio.h>
  37 #include <ctype.h>
  38 #include <string.h>
  39
  40 #include "uuidP.h"
  41
  42 int uuid_parse(const char *in, uuid_t uu)
  43 {
  44         struct uuid     uuid;
  45         int             i;
  46         const char      *cp;
  47         char            buf[3];
  48
  49         if (strlen(in) != 36)
  50                 return -1;
  51         for (i=0, cp = in; i <= 36; i++,cp++) {
  52                 if ((i == 8) || (i == 13) || (i == 18) ||
  53                     (i == 23)) {
  54                         if (*cp == '-')
  55                                 continue;
  56                         else
  57                                 return -1;
  58                 }
  59                 if (i== 36)
  60                         if (*cp == 0)
  61                                 continue;
  62                 if (!isxdigit(*cp))
  63                         return -1;
  64         }
  65         uuid.time_low = strtoul(in, NULL, 16);
  66         uuid.time_mid = strtoul(in+9, NULL, 16);
  67         uuid.time_hi_and_version = strtoul(in+14, NULL, 16);
  68         uuid.clock_seq = strtoul(in+19, NULL, 16);
  69         cp = in+24;
  70         buf[2] = 0;
  71         for (i=0; i < 6; i++) {
  72                 buf[0] = *cp++;
  73                 buf[1] = *cp++;
  74                 uuid.node[i] = strtoul(buf, NULL, 16);
  75         }
  76
  77         uuid_pack(&uuid, uu);
  78         return 0;
  79 }