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
getULong(unsigned char * buf)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
getLong(unsigned char * (buf))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
getUShort(unsigned char * buf)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
getShort(unsigned char * buf)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
putULong(unsigned char * obuf,u_int32_t val)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
putLong(unsigned char * obuf,int32_t val)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
putUShort(unsigned char * obuf,unsigned int val)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
putShort(unsigned char * obuf,int val)112 putShort(unsigned char *obuf, int val)
113 {
114 int16_t tmp = htons(val);
115
116 memcpy(obuf, &tmp, sizeof(tmp));
117 }
118