1 /* $OpenBSD: convert.c,v 1.5 2004/02/07 11:35:59 henning Exp $ */ 2 3 /* 4 * Safe copying of option values into and out of the option buffer, 5 * which can't be assumed to be aligned. 6 */ 7 8 /*- 9 * SPDX-License-Identifier: BSD-3-Clause 10 * 11 * Copyright (c) 1995, 1996 The Internet Software Consortium. 12 * All rights reserved. 13 * 14 * Redistribution and use in source and binary forms, with or without 15 * modification, are permitted provided that the following conditions 16 * are met: 17 * 18 * 1. Redistributions of source code must retain the above copyright 19 * notice, this list of conditions and the following disclaimer. 20 * 2. Redistributions in binary form must reproduce the above copyright 21 * notice, this list of conditions and the following disclaimer in the 22 * documentation and/or other materials provided with the distribution. 23 * 3. Neither the name of The Internet Software Consortium nor the names 24 * of its contributors may be used to endorse or promote products derived 25 * from this software without specific prior written permission. 26 * 27 * THIS SOFTWARE IS PROVIDED BY THE INTERNET SOFTWARE CONSORTIUM AND 28 * CONTRIBUTORS ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, 29 * INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF 30 * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE 31 * DISCLAIMED. IN NO EVENT SHALL THE INTERNET SOFTWARE CONSORTIUM OR 32 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 33 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 34 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF 35 * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND 36 * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, 37 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT 38 * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 39 * SUCH DAMAGE. 40 * 41 * This software has been written for the Internet Software Consortium 42 * by Ted Lemon <mellon@fugue.com> in cooperation with Vixie 43 * Enterprises. To learn more about the Internet Software Consortium, 44 * see ``http://www.vix.com/isc''. To learn more about Vixie 45 * Enterprises, see ``http://www.vix.com''. 46 */ 47 48 #include <sys/cdefs.h> 49 #include "dhcpd.h" 50 51 u_int32_t 52 getULong(unsigned char *buf) 53 { 54 u_int32_t ibuf; 55 56 memcpy(&ibuf, buf, sizeof(ibuf)); 57 return (ntohl(ibuf)); 58 } 59 60 int32_t 61 getLong(unsigned char *(buf)) 62 { 63 int32_t ibuf; 64 65 memcpy(&ibuf, buf, sizeof(ibuf)); 66 return (ntohl(ibuf)); 67 } 68 69 u_int16_t 70 getUShort(unsigned char *buf) 71 { 72 u_int16_t ibuf; 73 74 memcpy(&ibuf, buf, sizeof(ibuf)); 75 return (ntohs(ibuf)); 76 } 77 78 int16_t 79 getShort(unsigned char *buf) 80 { 81 int16_t ibuf; 82 83 memcpy(&ibuf, buf, sizeof(ibuf)); 84 return (ntohs(ibuf)); 85 } 86 87 void 88 putULong(unsigned char *obuf, u_int32_t val) 89 { 90 u_int32_t tmp = htonl(val); 91 92 memcpy(obuf, &tmp, sizeof(tmp)); 93 } 94 95 void 96 putLong(unsigned char *obuf, int32_t val) 97 { 98 int32_t tmp = htonl(val); 99 100 memcpy(obuf, &tmp, sizeof(tmp)); 101 } 102 103 void 104 putUShort(unsigned char *obuf, unsigned int val) 105 { 106 u_int16_t tmp = htons(val); 107 108 memcpy(obuf, &tmp, sizeof(tmp)); 109 } 110 111 void 112 putShort(unsigned char *obuf, int val) 113 { 114 int16_t tmp = htons(val); 115 116 memcpy(obuf, &tmp, sizeof(tmp)); 117 } 118