sbin/dhclient/convert.c

   1 /*      $OpenBSD: convert.c,v 1.5 2004/02/07 11:35:59 henning Exp $     */
   2 /*      $DragonFly: src/sbin/dhclient/convert.c,v 1.1 2008/08/30 16:07:58 hasso Exp $   */
   3
   4 /*
   5  * Safe copying of option values into and out of the option buffer,
   6  * which can't be assumed to be aligned.
   7  */
   8
   9 /*
  10  * Copyright (c) 1995, 1996 The Internet Software Consortium.
  11  * All rights reserved.
  12  *
  13  * Redistribution and use in source and binary forms, with or without
  14  * modification, are permitted provided that the following conditions
  15  * are met:
  16  *
  17  * 1. Redistributions of source code must retain the above copyright
  18  *    notice, this list of conditions and the following disclaimer.
  19  * 2. Redistributions in binary form must reproduce the above copyright
  20  *    notice, this list of conditions and the following disclaimer in the
  21  *    documentation and/or other materials provided with the distribution.
  22  * 3. Neither the name of The Internet Software Consortium nor the names
  23  *    of its contributors may be used to endorse or promote products derived
  24  *    from this software without specific prior written permission.
  25  *
  26  * THIS SOFTWARE IS PROVIDED BY THE INTERNET SOFTWARE CONSORTIUM AND
  27  * CONTRIBUTORS ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES,
  28  * INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
  29  * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
  30  * DISCLAIMED.  IN NO EVENT SHALL THE INTERNET SOFTWARE CONSORTIUM OR
  31  * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
  32  * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
  33  * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
  34  * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
  35  * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
  36  * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
  37  * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  38  * SUCH DAMAGE.
  39  *
  40  * This software has been written for the Internet Software Consortium
  41  * by Ted Lemon <mellon@fugue.com> in cooperation with Vixie
  42  * Enterprises.  To learn more about the Internet Software Consortium,
  43  * see ``http://www.vix.com/isc''.  To learn more about Vixie
  44  * Enterprises, see ``http://www.vix.com''.
  45  */
  46
  47 #include "dhcpd.h"
  48
  49 u_int32_t
  50 getULong(unsigned char *buf)
  51 {
  52         u_int32_t ibuf;
  53
  54         memcpy(&ibuf, buf, sizeof(ibuf));
  55         return (ntohl(ibuf));
  56 }
  57
  58 int32_t
  59 getLong(unsigned char *(buf))
  60 {
  61         int32_t ibuf;
  62
  63         memcpy(&ibuf, buf, sizeof(ibuf));
  64         return (ntohl(ibuf));
  65 }
  66
  67 u_int16_t
  68 getUShort(unsigned char *buf)
  69 {
  70         u_int16_t ibuf;
  71
  72         memcpy(&ibuf, buf, sizeof(ibuf));
  73         return (ntohs(ibuf));
  74 }
  75
  76 int16_t
  77 getShort(unsigned char *buf)
  78 {
  79         int16_t ibuf;
  80
  81         memcpy(&ibuf, buf, sizeof(ibuf));
  82         return (ntohs(ibuf));
  83 }
  84
  85 void
  86 putULong(unsigned char *obuf, u_int32_t val)
  87 {
  88         u_int32_t tmp = htonl(val);
  89
  90         memcpy(obuf, &tmp, sizeof(tmp));
  91 }
  92
  93 void
  94 putLong(unsigned char *obuf, int32_t val)
  95 {
  96         int32_t tmp = htonl(val);
  97
  98         memcpy(obuf, &tmp, sizeof(tmp));
  99 }
 100
 101 void
 102 putUShort(unsigned char *obuf, unsigned int val)
 103 {
 104         u_int16_t tmp = htons(val);
 105
 106         memcpy(obuf, &tmp, sizeof(tmp));
 107 }
 108
 109 void
 110 putShort(unsigned char *obuf, int val)
 111 {
 112         int16_t tmp = htons(val);
 113
 114         memcpy(obuf, &tmp, sizeof(tmp));
 115 }