1  /*
       2   * predefined.c --- well-known UUIDs from the RFC-4122 namespace
       3   *
       4   * Copyright (C) 2017 Philip Prindeville
       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 <string.h>
      36  #include "uuid.h"
      37  
      38  /*
      39   * These are time-based UUIDs that are well-known in that they've
      40   * been canonized as part of RFC-4122, Appendex C.  They are to
      41   * be used as the namespace (ns) argument to the uuid_generate_md5()
      42   * and uuid_generate_sha1() functions.
      43   *
      44   * See Section 4.3 for the particulars of how namespace UUIDs
      45   * are combined with seed values to generate new UUIDs.
      46   */
      47  
      48  UUID_DEFINE(NameSpace_DNS,
      49  	0x6b, 0xa7, 0xb8, 0x10, 0x9d, 0xad, 0x11, 0xd1,
      50  	0x80, 0xb4, 0x00, 0xc0, 0x4f, 0xd4, 0x30, 0xc8);
      51  
      52  UUID_DEFINE(NameSpace_URL,
      53  	0x6b, 0xa7, 0xb8, 0x11, 0x9d, 0xad, 0x11, 0xd1,
      54  	0x80, 0xb4, 0x00, 0xc0, 0x4f, 0xd4, 0x30, 0xc8);
      55  
      56  UUID_DEFINE(NameSpace_OID,
      57  	0x6b, 0xa7, 0xb8, 0x12, 0x9d, 0xad, 0x11, 0xd1,
      58  	0x80, 0xb4, 0x00, 0xc0, 0x4f, 0xd4, 0x30, 0xc8);
      59  
      60  UUID_DEFINE(NameSpace_X500,
      61  	0x6b, 0xa7, 0xb8, 0x14, 0x9d, 0xad, 0x11, 0xd1,
      62  	0x80, 0xb4, 0x00, 0xc0, 0x4f, 0xd4, 0x30, 0xc8);
      63  
      64  const uuid_t *uuid_get_template(const char *alias)
      65  {
      66  	if (!alias || !*alias)
      67  		return NULL;
      68  
      69  	if (!strcmp(alias, "dns"))
      70  		return &NameSpace_DNS;
      71  
      72  	if (!strcmp(alias, "url"))
      73  		return &NameSpace_URL;
      74  
      75  	if (!strcmp(alias, "oid"))
      76  		return &NameSpace_OID;
      77  
      78  	if (!strcmp(alias, "x500") || !strcmp(alias, "x.500"))
      79  		return &NameSpace_X500;
      80  
      81  	return NULL;
      82  }
      83