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Commit | Line | Data |
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df21c858 | 1 | /* |
e685e07d | 2 | * Copyright (c) 1996-1999 by Internet Software Consortium. |
df21c858 UD |
3 | * |
4 | * Permission to use, copy, modify, and distribute this software for any | |
5 | * purpose with or without fee is hereby granted, provided that the above | |
6 | * copyright notice and this permission notice appear in all copies. | |
7 | * | |
8 | * THE SOFTWARE IS PROVIDED "AS IS" AND INTERNET SOFTWARE CONSORTIUM DISCLAIMS | |
9 | * ALL WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES | |
10 | * OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL INTERNET SOFTWARE | |
11 | * CONSORTIUM BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL | |
12 | * DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR | |
13 | * PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS | |
14 | * ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS | |
15 | * SOFTWARE. | |
16 | */ | |
17 | ||
df21c858 | 18 | #include <sys/types.h> |
28f540f4 RM |
19 | #include <sys/param.h> |
20 | #include <sys/socket.h> | |
e685e07d | 21 | |
28f540f4 | 22 | #include <netinet/in.h> |
628a0aa1 | 23 | #include <arpa/inet.h> |
28f540f4 | 24 | #include <arpa/nameser.h> |
e685e07d | 25 | |
28f540f4 RM |
26 | #include <ctype.h> |
27 | #include <resolv.h> | |
28 | ||
28f540f4 | 29 | static char |
b43b13ac | 30 | xtob(int c) { |
28f540f4 RM |
31 | return (c - (((c >= '0') && (c <= '9')) ? '0' : '7')); |
32 | } | |
33 | ||
34 | u_int | |
b43b13ac UD |
35 | inet_nsap_addr(const char *ascii, u_char *binary, int maxlen) { |
36 | u_char c, nib; | |
28f540f4 RM |
37 | u_int len = 0; |
38 | ||
e685e07d | 39 | while ((c = *ascii++) != '\0' && len < (u_int)maxlen) { |
28f540f4 RM |
40 | if (c == '.' || c == '+' || c == '/') |
41 | continue; | |
42 | if (!isascii(c)) | |
43 | return (0); | |
fcb59416 | 44 | c = toupper(c); |
28f540f4 RM |
45 | if (isxdigit(c)) { |
46 | nib = xtob(c); | |
b43b13ac UD |
47 | c = *ascii++; |
48 | if (c != '\0') { | |
28f540f4 RM |
49 | c = toupper(c); |
50 | if (isxdigit(c)) { | |
51 | *binary++ = (nib << 4) | xtob(c); | |
52 | len++; | |
53 | } else | |
54 | return (0); | |
55 | } | |
56 | else | |
57 | return (0); | |
58 | } | |
59 | else | |
60 | return (0); | |
61 | } | |
62 | return (len); | |
63 | } | |
64 | ||
65 | char * | |
b43b13ac UD |
66 | inet_nsap_ntoa(int binlen, const u_char *binary, char *ascii) { |
67 | int nib; | |
28f540f4 | 68 | int i; |
c877418f | 69 | static char tmpbuf[255*2 + 128]; |
28f540f4 RM |
70 | char *start; |
71 | ||
72 | if (ascii) | |
73 | start = ascii; | |
74 | else { | |
75 | ascii = tmpbuf; | |
76 | start = tmpbuf; | |
77 | } | |
78 | ||
79 | if (binlen > 255) | |
80 | binlen = 255; | |
81 | ||
82 | for (i = 0; i < binlen; i++) { | |
83 | nib = *binary >> 4; | |
84 | *ascii++ = nib + (nib < 10 ? '0' : '7'); | |
85 | nib = *binary++ & 0x0f; | |
86 | *ascii++ = nib + (nib < 10 ? '0' : '7'); | |
87 | if (((i % 2) == 0 && (i + 1) < binlen)) | |
88 | *ascii++ = '.'; | |
89 | } | |
90 | *ascii = '\0'; | |
91 | return (start); | |
92 | } |