]>
git.ipfire.org Git - thirdparty/dhcp.git/blob - omapip/convert.c
3 Safe copying of option values into and out of the option buffer, which
4 can't be assumed to be aligned. */
7 * Copyright (c) 2004,2007,2009 by Internet Systems Consortium, Inc. ("ISC")
8 * Copyright (c) 1996-2003 by Internet Software Consortium
10 * Permission to use, copy, modify, and distribute this software for any
11 * purpose with or without fee is hereby granted, provided that the above
12 * copyright notice and this permission notice appear in all copies.
14 * THE SOFTWARE IS PROVIDED "AS IS" AND ISC DISCLAIMS ALL WARRANTIES
15 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
16 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL ISC BE LIABLE FOR
17 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
18 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
19 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT
20 * OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
22 * Internet Systems Consortium, Inc.
24 * Redwood City, CA 94063
26 * https://www.isc.org/
28 * This software has been written for Internet Systems Consortium
29 * by Ted Lemon in cooperation with Vixie Enterprises and Nominum, Inc.
30 * To learn more about Internet Systems Consortium, see
31 * ``https://www.isc.org/''. To learn more about Vixie Enterprises,
32 * see ``http://www.vix.com''. To learn more about Nominum, Inc., see
33 * ``http://www.nominum.com''.
38 #include <omapip/omapip_p.h>
40 u_int32_t
getULong (buf
)
41 const unsigned char *buf
;
45 memcpy (&ibuf
, buf
, sizeof (u_int32_t
));
50 const unsigned char *buf
;
54 memcpy (&ibuf
, buf
, sizeof (int32_t));
58 u_int32_t
getUShort (buf
)
59 const unsigned char *buf
;
63 memcpy (&ibuf
, buf
, sizeof (u_int16_t
));
67 int32_t getShort (buf
)
68 const unsigned char *buf
;
72 memcpy (&ibuf
, buf
, sizeof (int16_t));
76 void putULong (obuf
, val
)
80 u_int32_t tmp
= htonl (val
);
81 memcpy (obuf
, &tmp
, sizeof tmp
);
84 void putLong (obuf
, val
)
88 int32_t tmp
= htonl (val
);
89 memcpy (obuf
, &tmp
, sizeof tmp
);
92 void putUShort (obuf
, val
)
96 u_int16_t tmp
= htons (val
);
97 memcpy (obuf
, &tmp
, sizeof tmp
);
100 void putShort (obuf
, val
)
104 int16_t tmp
= htons (val
);
105 memcpy (obuf
, &tmp
, sizeof tmp
);
108 void putUChar (obuf
, val
)
115 u_int32_t
getUChar (obuf
)
116 const unsigned char *obuf
;
121 int converted_length (buf
, base
, width
)
122 const unsigned char *buf
;
129 u_int32_t newcolumn
= base
;
135 number
= getUChar (buf
);
137 number
= getUShort (buf
);
139 number
= getULong (buf
);
149 newcolumn
= column
* base
;
150 /* If we wrap around, it must be the next power of two up. */
151 } while (newcolumn
> column
);
156 int binary_to_ascii (outbuf
, inbuf
, base
, width
)
157 unsigned char *outbuf
;
158 const unsigned char *inbuf
;
163 static char h2a
[] = "0123456789abcdef";
164 int power
= converted_length (inbuf
, base
, width
);
171 number
= getUChar (inbuf
);
173 number
= getUShort (inbuf
);
175 number
= getULong (inbuf
);
179 for (i
= power
- 1 ; i
>= 0; i
--) {
180 outbuf
[i
] = h2a
[number
% base
];