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
|
/* $NetBSD: nsap_addr.c,v 1.2 2004/05/20 23:12:33 christos Exp $ */
/*
* Copyright (c) 2004 by Internet Systems Consortium, Inc. ("ISC")
* Copyright (c) 1996-1999 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.
*/
#include <sys/cdefs.h>
#if defined(LIBC_SCCS) && !defined(lint)
#if 0
static const char rcsid[] = "Id: nsap_addr.c,v 1.2.206.1 2004/03/09 08:33:33 marka Exp";
#else
__RCSID("$NetBSD: nsap_addr.c,v 1.2 2004/05/20 23:12:33 christos Exp $");
#endif
#endif /* LIBC_SCCS and not lint */
#include <sys/types.h>
#include <sys/param.h>
#include <sys/socket.h>
#include <netinet/in.h>
#include <arpa/inet.h>
#include "arpa_nameser.h"
#include <assert.h>
#include <ctype.h>
#ifdef ANDROID_CHANGES
#include "resolv_private.h"
#else
#include <resolv.h>
#endif
static char
xtob(int c) {
return (c - (((c >= '0') && (c <= '9')) ? '0' : '7'));
}
u_int
inet_nsap_addr(const char *ascii, u_char *binary, int maxlen) {
u_char c, nib;
u_int len = 0;
assert(ascii != NULL);
assert(binary != NULL);
if (ascii[0] != '0' || (ascii[1] != 'x' && ascii[1] != 'X'))
return (0);
ascii += 2;
while ((c = *ascii++) != '\0' && len < (u_int)maxlen) {
if (c == '.' || c == '+' || c == '/')
continue;
if (!isascii(c))
return (0);
if (islower(c))
c = toupper(c);
if (isxdigit(c)) {
nib = xtob(c);
c = *ascii++;
if (c != '\0') {
c = toupper(c);
if (isxdigit(c)) {
*binary++ = (nib << 4) | xtob(c);
len++;
} else
return (0);
}
else
return (0);
}
else
return (0);
}
return (len);
}
char *
inet_nsap_ntoa(int binlen, const u_char *binary, char *ascii) {
int nib;
int i;
static char tmpbuf[2+255*3];
char *start;
assert(binary != NULL);
if (ascii)
start = ascii;
else {
ascii = tmpbuf;
start = tmpbuf;
}
*ascii++ = '0';
*ascii++ = 'x';
if (binlen > 255)
binlen = 255;
for (i = 0; i < binlen; i++) {
nib = (u_int32_t)*binary >> 4;
*ascii++ = nib + (nib < 10 ? '0' : '7');
nib = *binary++ & 0x0f;
*ascii++ = nib + (nib < 10 ? '0' : '7');
if (((i % 2) == 0 && (i + 1) < binlen))
*ascii++ = '.';
}
*ascii = '\0';
return (start);
}
|
