release/src/router/busybox/e2fsprogs/old_e2fsprogs/uuid/parse.c

   1 /* vi: set sw=4 ts=4: */
   2 /*
   3  * parse.c --- UUID parsing
   4  *
   5  * Copyright (C) 1996, 1997 Theodore Ts'o.
   6  *
   7  * %Begin-Header%
   8  * Redistribution and use in source and binary forms, with or without
   9  * modification, are permitted provided that the following conditions
  10  * are met:
  11  * 1. Redistributions of source code must retain the above copyright
  12  *    notice, and the entire permission notice in its entirety,
  13  *    including the disclaimer of warranties.
  14  * 2. Redistributions in binary form must reproduce the above copyright
  15  *    notice, this list of conditions and the following disclaimer in the
  16  *    documentation and/or other materials provided with the distribution.
  17  * 3. The name of the author may not be used to endorse or promote
  18  *    products derived from this software without specific prior
  19  *    written permission.
  20  *
  21  * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED
  22  * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
  23  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE, ALL OF
  24  * WHICH ARE HEREBY DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR BE
  25  * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
  26  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT
  27  * OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
  28  * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
  29  * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  30  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE
  31  * USE OF THIS SOFTWARE, EVEN IF NOT ADVISED OF THE POSSIBILITY OF SUCH
  32  * DAMAGE.
  33  * %End-Header%
  34  */
  35
  36 #include <stdlib.h>
  37 #include <stdio.h>
  38 #include <ctype.h>
  39 #include <string.h>
  40
  41 #include "uuidP.h"
  42
  43 int uuid_parse(const char *in, uuid_t uu)
  44 {
  45         struct uuid     uuid;
  46         int             i;
  47         const char      *cp;
  48         char            buf[3];
  49
  50         if (strlen(in) != 36)
  51                 return -1;
  52         for (i=0, cp = in; i <= 36; i++,cp++) {
  53                 if ((i == 8) || (i == 13) || (i == 18) ||
  54                     (i == 23)) {
  55                         if (*cp == '-')
  56                                 continue;
  57                         else
  58                                 return -1;
  59                 }
  60                 if (i== 36)
  61                         if (*cp == 0)
  62                                 continue;
  63                 if (!isxdigit(*cp))
  64                         return -1;
  65         }
  66         uuid.time_low = strtoul(in, NULL, 16);
  67         uuid.time_mid = strtoul(in+9, NULL, 16);
  68         uuid.time_hi_and_version = strtoul(in+14, NULL, 16);
  69         uuid.clock_seq = strtoul(in+19, NULL, 16);
  70         cp = in+24;
  71         buf[2] = 0;
  72         for (i=0; i < 6; i++) {
  73                 buf[0] = *cp++;
  74                 buf[1] = *cp++;
  75                 uuid.node[i] = strtoul(buf, NULL, 16);
  76         }
  77
  78         uuid_pack(&uuid, uu);
  79         return 0;
  80 }