1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
|
/* convert.c
Safe copying of option values into and out of the option buffer, which
can't be assumed to be aligned. */
/*
* Copyright (c) 2004 by Internet Systems Consortium, Inc. ("ISC")
* Copyright (c) 1996-2003 by Internet Software Consortium
*
* Permission to use, copy, modify, and distribute this software for any
* purpose with or without fee is hereby granted, provided that the above
* copyright notice and this permission notice appear in all copies.
*
* THE SOFTWARE IS PROVIDED "AS IS" AND ISC DISCLAIMS ALL WARRANTIES
* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL ISC BE LIABLE FOR
* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT
* OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*
* Internet Systems Consortium, Inc.
* 950 Charter Street
* Redwood City, CA 94063
* <info@isc.org>
* http://www.isc.org/
*
* This software has been written for Internet Systems Consortium
* by Ted Lemon in cooperation with Vixie Enterprises and Nominum, Inc.
* To learn more about Internet Systems Consortium, see
* ``http://www.isc.org/''. To learn more about Vixie Enterprises,
* see ``http://www.vix.com''. To learn more about Nominum, Inc., see
* ``http://www.nominum.com''.
*/
#ifndef lint
static char copyright[] =
"$Id: convert.c,v 1.2 2005/03/17 20:15:21 dhankins Exp $ Copyright (c) 2004 Internet Systems Consortium. All rights reserved.\n";
#endif /* not lint */
#include <omapip/omapip_p.h>
u_int32_t getULong (buf)
const unsigned char *buf;
{
u_int32_t ibuf;
memcpy (&ibuf, buf, sizeof (u_int32_t));
return ntohl (ibuf);
}
int32_t getLong (buf)
const unsigned char *buf;
{
int32_t ibuf;
memcpy (&ibuf, buf, sizeof (int32_t));
return ntohl (ibuf);
}
u_int32_t getUShort (buf)
const unsigned char *buf;
{
unsigned short ibuf;
memcpy (&ibuf, buf, sizeof (u_int16_t));
return ntohs (ibuf);
}
int32_t getShort (buf)
const unsigned char *buf;
{
short ibuf;
memcpy (&ibuf, buf, sizeof (int16_t));
return ntohs (ibuf);
}
void putULong (obuf, val)
unsigned char *obuf;
u_int32_t val;
{
u_int32_t tmp = htonl (val);
memcpy (obuf, &tmp, sizeof tmp);
}
void putLong (obuf, val)
unsigned char *obuf;
int32_t val;
{
int32_t tmp = htonl (val);
memcpy (obuf, &tmp, sizeof tmp);
}
void putUShort (obuf, val)
unsigned char *obuf;
u_int32_t val;
{
u_int16_t tmp = htons (val);
memcpy (obuf, &tmp, sizeof tmp);
}
void putShort (obuf, val)
unsigned char *obuf;
int32_t val;
{
int16_t tmp = htons (val);
memcpy (obuf, &tmp, sizeof tmp);
}
void putUChar (obuf, val)
unsigned char *obuf;
u_int32_t val;
{
*obuf = val;
}
u_int32_t getUChar (obuf)
const unsigned char *obuf;
{
return obuf [0];
}
int converted_length (buf, base, width)
const unsigned char *buf;
unsigned int base;
unsigned int width;
{
u_int32_t number;
u_int32_t column;
int power = 1;
u_int32_t newcolumn = base;
if (base > 16)
return 0;
if (width == 1)
number = getUChar (buf);
else if (width == 2)
number = getUShort (buf);
else if (width == 4)
number = getULong (buf);
else
return 0;
do {
column = newcolumn;
if (number < column)
return power;
power++;
newcolumn = column * base;
/* If we wrap around, it must be the next power of two up. */
} while (newcolumn > column);
return power;
}
int binary_to_ascii (outbuf, inbuf, base, width)
unsigned char *outbuf;
const unsigned char *inbuf;
unsigned int base;
unsigned int width;
{
u_int32_t number;
static char h2a [] = "0123456789abcdef";
int power = converted_length (inbuf, base, width);
int i, j;
if (base > 16)
return 0;
if (width == 1)
number = getUChar (inbuf);
else if (width == 2)
number = getUShort (inbuf);
else if (width == 4)
number = getULong (inbuf);
else
return 0;
for (i = power - 1 ; i >= 0; i--) {
outbuf [i] = h2a [number % base];
number /= base;
}
return power;
}
|
