LXR 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
  43int 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}
  81