libmisc/uuid/parse.c

0001 /*
0002  * parse.c --- UUID parsing
0003  *
0004  * Copyright (C) 1996, 1997 Theodore Ts'o.
0005  *
0006  * %Begin-Header%
0007  * Redistribution and use in source and binary forms, with or without
0008  * modification, are permitted provided that the following conditions
0009  * are met:
0010  * 1. Redistributions of source code must retain the above copyright
0011  *    notice, and the entire permission notice in its entirety,
0012  *    including the disclaimer of warranties.
0013  * 2. Redistributions in binary form must reproduce the above copyright
0014  *    notice, this list of conditions and the following disclaimer in the
0015  *    documentation and/or other materials provided with the distribution.
0016  * 3. The name of the author may not be used to endorse or promote
0017  *    products derived from this software without specific prior
0018  *    written permission.
0019  *
0020  * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED
0021  * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
0022  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE, ALL OF
0023  * WHICH ARE HEREBY DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR BE
0024  * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
0025  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT
0026  * OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
0027  * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
0028  * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
0029  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE
0030  * USE OF THIS SOFTWARE, EVEN IF NOT ADVISED OF THE POSSIBILITY OF SUCH
0031  * DAMAGE.
0032  * %End-Header%
0033  */
0034
0035 #ifdef HAVE_CONFIG_H
0036 #include "config.h"
0037 #endif
0038
0039 #include <stdlib.h>
0040 #include <stdio.h>
0041 #include <ctype.h>
0042 #include <string.h>
0043
0044 #include "uuidP.h"
0045
0046 int uuid_parse(const char *in, uuid_t uu)
0047 {
0048     struct uuid uuid;
0049     int         i;
0050     const char  *cp;
0051     char        buf[3];
0052
0053     if (strlen(in) != 36)
0054         return -1;
0055     for (i=0, cp = in; i <= 36; i++,cp++) {
0056         if ((i == 8) || (i == 13) || (i == 18) ||
0057             (i == 23)) {
0058             if (*cp == '-')
0059                 continue;
0060             else
0061                 return -1;
0062         }
0063         if (i== 36)
0064             if (*cp == 0)
0065                 continue;
0066         if (!isxdigit((unsigned char)*cp))
0067             return -1;
0068     }
0069     uuid.time_low = strtoul(in, NULL, 16);
0070     uuid.time_mid = strtoul(in+9, NULL, 16);
0071     uuid.time_hi_and_version = strtoul(in+14, NULL, 16);
0072     uuid.clock_seq = strtoul(in+19, NULL, 16);
0073     cp = in+24;
0074     buf[2] = 0;
0075     for (i=0; i < 6; i++) {
0076         buf[0] = *cp++;
0077         buf[1] = *cp++;
0078         uuid.node[i] = strtoul(buf, NULL, 16);
0079     }
0080
0081     uuid_pack(&uuid, uu);
0082     return 0;
0083 }