blob: e63509911b2d123c8c5938caa2f9c869977d4d95 (
plain)
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
|
/*
* extract parts of an ip_address
* Copyright (C) 2000 Henry Spencer.
*
* This library is free software; you can redistribute it and/or modify it
* under the terms of the GNU Library General Public License as published by
* the Free Software Foundation; either version 2 of the License, or (at your
* option) any later version. See <http://www.fsf.org/copyleft/lgpl.txt>.
*
* This library is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
* or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Library General Public
* License for more details.
*
* RCSID $Id: addrtypeof.c,v 1.1 2004/03/15 20:35:25 as Exp $
*/
#include "internal.h"
#include "freeswan.h"
/*
- addrtypeof - get the type of an ip_address
*/
int
addrtypeof(src)
const ip_address *src;
{
return src->u.v4.sin_family;
}
/*
- addrbytesptr - get pointer to the address bytes of an ip_address
*/
size_t /* 0 for error */
addrbytesptr(src, dstp)
const ip_address *src;
const unsigned char **dstp; /* NULL means just a size query */
{
const unsigned char *p;
size_t n;
switch (src->u.v4.sin_family) {
case AF_INET:
p = (const unsigned char *)&src->u.v4.sin_addr.s_addr;
n = 4;
break;
case AF_INET6:
p = (const unsigned char *)&src->u.v6.sin6_addr;
n = 16;
break;
default:
return 0;
break;
}
if (dstp != NULL)
*dstp = p;
return n;
}
/*
- addrlenof - get length of the address bytes of an ip_address
*/
size_t /* 0 for error */
addrlenof(src)
const ip_address *src;
{
return addrbytesptr(src, NULL);
}
/*
- addrbytesof - get the address bytes of an ip_address
*/
size_t /* 0 for error */
addrbytesof(src, dst, dstlen)
const ip_address *src;
unsigned char *dst;
size_t dstlen;
{
const unsigned char *p;
size_t n;
size_t ncopy;
n = addrbytesptr(src, &p);
if (n == 0)
return 0;
if (dstlen > 0) {
ncopy = n;
if (ncopy > dstlen)
ncopy = dstlen;
memcpy(dst, p, ncopy);
}
return n;
}
|
