1 /* $OpenBSD: convert.c,v 1.5 2016/02/06 23:50:10 krw 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 * Copyright (c) 1995, 1996 The Internet Software Consortium.
10 * All rights reserved.
11 *
12 * Redistribution and use in source and binary forms, with or without
13 * modification, are permitted provided that the following conditions
14 * are met:
15 *
16 * 1. Redistributions of source code must retain the above copyright
17 * notice, this list of conditions and the following disclaimer.
18 * 2. Redistributions in binary form must reproduce the above copyright
19 * notice, this list of conditions and the following disclaimer in the
20 * documentation and/or other materials provided with the distribution.
21 * 3. Neither the name of The Internet Software Consortium nor the names
22 * of its contributors may be used to endorse or promote products derived
23 * from this software without specific prior written permission.
24 *
25 * THIS SOFTWARE IS PROVIDED BY THE INTERNET SOFTWARE CONSORTIUM AND
26 * CONTRIBUTORS ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES,
27 * INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
28 * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
29 * DISCLAIMED. IN NO EVENT SHALL THE INTERNET SOFTWARE CONSORTIUM OR
30 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
31 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
32 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
33 * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
34 * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
35 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
36 * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
37 * SUCH DAMAGE.
38 *
39 * This software has been written for the Internet Software Consortium
40 * by Ted Lemon <mellon@fugue.com> in cooperation with Vixie
41 * Enterprises. To learn more about the Internet Software Consortium,
42 * see ``http://www.vix.com/isc''. To learn more about Vixie
43 * Enterprises, see ``http://www.vix.com''.
44 */
45
46 #include <sys/types.h>
47 #include <sys/socket.h>
48
49 #include <net/if.h>
50
51 #include <netinet/in.h>
52
53 #include <stdio.h>
54 #include <stdlib.h>
55 #include <string.h>
56
57 #include "dhcp.h"
58 #include "tree.h"
59 #include "dhcpd.h"
60
61 u_int32_t
getULong(unsigned char * buf)62 getULong(unsigned char *buf)
63 {
64 u_int32_t ibuf;
65
66 memcpy(&ibuf, buf, sizeof(ibuf));
67 return (ntohl(ibuf));
68 }
69
70 u_int16_t
getUShort(unsigned char * buf)71 getUShort(unsigned char *buf)
72 {
73 u_int16_t ibuf;
74
75 memcpy(&ibuf, buf, sizeof(ibuf));
76 return (ntohs(ibuf));
77 }
78
79 void
putULong(unsigned char * obuf,u_int32_t val)80 putULong(unsigned char *obuf, u_int32_t val)
81 {
82 u_int32_t tmp = htonl(val);
83
84 memcpy(obuf, &tmp, sizeof(tmp));
85 }
86
87 void
putLong(unsigned char * obuf,int32_t val)88 putLong(unsigned char *obuf, int32_t val)
89 {
90 int32_t tmp = htonl(val);
91
92 memcpy(obuf, &tmp, sizeof(tmp));
93 }
94
95 void
putUShort(unsigned char * obuf,unsigned int val)96 putUShort(unsigned char *obuf, unsigned int val)
97 {
98 u_int16_t tmp = htons(val);
99
100 memcpy(obuf, &tmp, sizeof(tmp));
101 }
102
103 void
putShort(unsigned char * obuf,int val)104 putShort(unsigned char *obuf, int val)
105 {
106 int16_t tmp = htons(val);
107
108 memcpy(obuf, &tmp, sizeof(tmp));
109 }
110