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 <[email protected]> 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 __FBSDID("$FreeBSD$");
50
51 #include "dhcpd.h"
52
53 u_int32_t
getULong(unsigned char * buf)54 getULong(unsigned char *buf)
55 {
56 u_int32_t ibuf;
57
58 memcpy(&ibuf, buf, sizeof(ibuf));
59 return (ntohl(ibuf));
60 }
61
62 int32_t
getLong(unsigned char * (buf))63 getLong(unsigned char *(buf))
64 {
65 int32_t ibuf;
66
67 memcpy(&ibuf, buf, sizeof(ibuf));
68 return (ntohl(ibuf));
69 }
70
71 u_int16_t
getUShort(unsigned char * buf)72 getUShort(unsigned char *buf)
73 {
74 u_int16_t ibuf;
75
76 memcpy(&ibuf, buf, sizeof(ibuf));
77 return (ntohs(ibuf));
78 }
79
80 int16_t
getShort(unsigned char * buf)81 getShort(unsigned char *buf)
82 {
83 int16_t ibuf;
84
85 memcpy(&ibuf, buf, sizeof(ibuf));
86 return (ntohs(ibuf));
87 }
88
89 void
putULong(unsigned char * obuf,u_int32_t val)90 putULong(unsigned char *obuf, u_int32_t val)
91 {
92 u_int32_t tmp = htonl(val);
93
94 memcpy(obuf, &tmp, sizeof(tmp));
95 }
96
97 void
putLong(unsigned char * obuf,int32_t val)98 putLong(unsigned char *obuf, int32_t val)
99 {
100 int32_t tmp = htonl(val);
101
102 memcpy(obuf, &tmp, sizeof(tmp));
103 }
104
105 void
putUShort(unsigned char * obuf,unsigned int val)106 putUShort(unsigned char *obuf, unsigned int val)
107 {
108 u_int16_t tmp = htons(val);
109
110 memcpy(obuf, &tmp, sizeof(tmp));
111 }
112
113 void
putShort(unsigned char * obuf,int val)114 putShort(unsigned char *obuf, int val)
115 {
116 int16_t tmp = htons(val);
117
118 memcpy(obuf, &tmp, sizeof(tmp));
119 }
120