compat/eui64_aton.c

   1 /*
   2  * Squid Change History:
   3  *
   4  *  2009-10-16 : import eui64_aton() function from NetBSD eui64.c
   5  */
   6
   7 /*      $NetBSD: eui64.c,v 1.1 2005/07/11 15:35:25 kiyohara Exp $       */
   8 /*
   9  * Copyright 2004 The Aerospace Corporation.  All rights reserved.
  10  *
  11  * Redistribution and use in source and binary forms, with or without
  12  * modification, are permitted provided that the following conditions
  13  * are met:
  14  *
  15  * 1.  Redistributions of source code must retain the above copyright
  16  *     notice, this list of conditions, and the following disclaimer.
  17  * 2.  Redistributions in binary form must reproduce the above copyright
  18  *     notice, this list of conditions, and the following disclaimer in the
  19  *     documentation and/or other materials provided with the distribution.
  20  * 3.  The name of The Aerospace Corporation may not be used to endorse or
  21  *     promote products derived from this software.
  22  *
  23  * THIS SOFTWARE IS PROVIDED BY THE AEROSPACE CORPORATION "AS IS" AND
  24  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  25  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  26  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AEROSPACE CORPORATION BE LIABLE
  27  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  28  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  29  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  30  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  31  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  32  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  33  * SUCH DAMAGE.
  34  *
  35  * Copyright (c) 1995
  36  *      Bill Paul <wpaul@ctr.columbia.edu>.  All rights reserved.
  37  *
  38  * Redistribution and use in source and binary forms, with or without
  39  * modification, are permitted provided that the following conditions
  40  * are met:
  41  * 1. Redistributions of source code must retain the above copyright
  42  *    notice, this list of conditions and the following disclaimer.
  43  * 2. Redistributions in binary form must reproduce the above copyright
  44  *    notice, this list of conditions and the following disclaimer in the
  45  *    documentation and/or other materials provided with the distribution.
  46  * 3. All advertising materials mentioning features or use of this software
  47  *    must display the following acknowledgement:
  48  *      This product includes software developed by Bill Paul.
  49  * 4. Neither the name of the author nor the names of any co-contributors
  50  *    may be used to endorse or promote products derived from this software
  51  *    without specific prior written permission.
  52  *
  53  * THIS SOFTWARE IS PROVIDED BY Bill Paul AND CONTRIBUTORS ``AS IS'' AND
  54  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  55  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  56  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
  57  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  58  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  59  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  60  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  61  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  62  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  63  * SUCH DAMAGE.
  64  *
  65  * EUI-64 conversion and lookup routines
  66  *
  67  *
  68  * Converted from ether_addr.c rev
  69  * FreeBSD: src/lib/libc/net/eui64.c,v 1.15 2002/04/08 07:51:10 ru Exp
  70  * by Brooks Davis
  71  *
  72  * Written by Bill Paul <wpaul@ctr.columbia.edu>
  73  * Center for Telecommunications Research
  74  * Columbia University, New York City
  75  */
  76
  77 #include "squid.h"
  78 #include "compat/eui64_aton.h"
  79
  80 /*
  81  * Convert an ASCII representation of an EUI-64 to binary form.
  82  */
  83 int
  84 eui64_aton(const char *a, struct eui64 *e)
  85 {
  86     int i;
  87     unsigned int o0, o1, o2, o3, o4, o5, o6, o7;
  88
  89     /* canonical form */
  90     i = sscanf(a, "%x-%x-%x-%x-%x-%x-%x-%x",
  91                &o0, &o1, &o2, &o3, &o4, &o5, &o6, &o7);
  92     if (i == EUI64_LEN)
  93         goto good;
  94     /* ethernet form */
  95     i = sscanf(a, "%x:%x:%x:%x:%x:%x:%x:%x",
  96                &o0, &o1, &o2, &o3, &o4, &o5, &o6, &o7);
  97     if (i == EUI64_LEN)
  98         goto good;
  99     /* classic fwcontrol/dconschat form */
 100     i = sscanf(a, "0x%2x%2x%2x%2x%2x%2x%2x%2x",
 101                &o0, &o1, &o2, &o3, &o4, &o5, &o6, &o7);
 102     if (i == EUI64_LEN)
 103         goto good;
 104     /* MAC format (-) */
 105     i = sscanf(a, "%x-%x-%x-%x-%x-%x",
 106                &o0, &o1, &o2, &o5, &o6, &o7);
 107     if (i == 6) {
 108         o3 = 0xff;
 109         o4 = 0xfe;
 110         goto good;
 111     }
 112     /* MAC format (:) */
 113     i = sscanf(a, "%x:%x:%x:%x:%x:%x",
 114                &o0, &o1, &o2, &o5, &o6, &o7);
 115     if (i == 6) {
 116         o3 = 0xff;
 117         o4 = 0xfe;
 118         goto good;
 119     }
 120
 121     return (-1);
 122
 123 good:
 124     e->octet[0]=o0;
 125     e->octet[1]=o1;
 126     e->octet[2]=o2;
 127     e->octet[3]=o3;
 128     e->octet[4]=o4;
 129     e->octet[5]=o5;
 130     e->octet[6]=o6;
 131     e->octet[7]=o7;
 132
 133     return (0);
 134 }