parse.c

00001 /*
00002  * parse.c --- UUID parsing
00003  * 
00004  * Copyright (C) 1996, 1997 Theodore Ts'o.
00005  *
00006  * %Begin-Header%
00007  * Redistribution and use in source and binary forms, with or without
00008  * modification, are permitted provided that the following conditions
00009  * are met:
00010  * 1. Redistributions of source code must retain the above copyright
00011  *    notice, and the entire permission notice in its entirety,
00012  *    including the disclaimer of warranties.
00013  * 2. Redistributions in binary form must reproduce the above copyright
00014  *    notice, this list of conditions and the following disclaimer in the
00015  *    documentation and/or other materials provided with the distribution.
00016  * 3. The name of the author may not be used to endorse or promote
00017  *    products derived from this software without specific prior
00018  *    written permission.
00019  * 
00020  * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED
00021  * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
00022  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE, ALL OF
00023  * WHICH ARE HEREBY DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR BE
00024  * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
00025  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT
00026  * OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
00027  * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
00028  * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
00029  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE
00030  * USE OF THIS SOFTWARE, EVEN IF NOT ADVISED OF THE POSSIBILITY OF SUCH
00031  * DAMAGE.
00032  * %End-Header%
00033  */
00034 
00035 #include <stdlib.h>
00036 #include <stdio.h>
00037 #include <ctype.h>
00038 #include <string.h>
00039 
00040 #include "uuidP.h"
00041 
00042 int uuid_parse(const char *in, uuid_t uu)
00043 {
00044         struct uuid     uuid;
00045         int             i;
00046         const char      *cp;
00047         char            buf[3];
00048 
00049         if (strlen(in) != 36)
00050                 return -1;
00051         for (i=0, cp = in; i <= 36; i++,cp++) {
00052                 if ((i == 8) || (i == 13) || (i == 18) ||
00053                     (i == 23)) {
00054                         if (*cp == '-')
00055                                 continue;
00056                         else
00057                                 return -1;
00058                 }
00059                 if (i== 36)
00060                         if (*cp == 0)
00061                                 continue;
00062                 if (!isxdigit(*cp))
00063                         return -1;
00064         }
00065         uuid.time_low = strtoul(in, NULL, 16);
00066         uuid.time_mid = strtoul(in+9, NULL, 16);
00067         uuid.time_hi_and_version = strtoul(in+14, NULL, 16);
00068         uuid.clock_seq = strtoul(in+19, NULL, 16);
00069         cp = in+24;
00070         buf[2] = 0;
00071         for (i=0; i < 6; i++) {
00072                 buf[0] = *cp++;
00073                 buf[1] = *cp++;
00074                 uuid.node[i] = strtoul(buf, NULL, 16);
00075         }
00076         
00077         uuid_pack(&uuid, uu);
00078         return 0;
00079 }

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