1*2fe8fb19SBen Gras /* $NetBSD: nsap_addr.c,v 1.6 2009/04/12 17:07:17 christos Exp $ */
2*2fe8fb19SBen Gras
3*2fe8fb19SBen Gras /*
4*2fe8fb19SBen Gras * Copyright (c) 2004 by Internet Systems Consortium, Inc. ("ISC")
5*2fe8fb19SBen Gras * Copyright (c) 1996-1999 by Internet Software Consortium.
6*2fe8fb19SBen Gras *
7*2fe8fb19SBen Gras * Permission to use, copy, modify, and distribute this software for any
8*2fe8fb19SBen Gras * purpose with or without fee is hereby granted, provided that the above
9*2fe8fb19SBen Gras * copyright notice and this permission notice appear in all copies.
10*2fe8fb19SBen Gras *
11*2fe8fb19SBen Gras * THE SOFTWARE IS PROVIDED "AS IS" AND ISC DISCLAIMS ALL WARRANTIES
12*2fe8fb19SBen Gras * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
13*2fe8fb19SBen Gras * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL ISC BE LIABLE FOR
14*2fe8fb19SBen Gras * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
15*2fe8fb19SBen Gras * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
16*2fe8fb19SBen Gras * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT
17*2fe8fb19SBen Gras * OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
18*2fe8fb19SBen Gras */
19*2fe8fb19SBen Gras
20*2fe8fb19SBen Gras #include <sys/cdefs.h>
21*2fe8fb19SBen Gras #if defined(LIBC_SCCS) && !defined(lint)
22*2fe8fb19SBen Gras #if 0
23*2fe8fb19SBen Gras static const char rcsid[] = "Id: nsap_addr.c,v 1.5 2005/07/28 06:51:48 marka Exp";
24*2fe8fb19SBen Gras #else
25*2fe8fb19SBen Gras __RCSID("$NetBSD: nsap_addr.c,v 1.6 2009/04/12 17:07:17 christos Exp $");
26*2fe8fb19SBen Gras #endif
27*2fe8fb19SBen Gras #endif /* LIBC_SCCS and not lint */
28*2fe8fb19SBen Gras
29*2fe8fb19SBen Gras #include "port_before.h"
30*2fe8fb19SBen Gras
31*2fe8fb19SBen Gras #include "namespace.h"
32*2fe8fb19SBen Gras #include <sys/types.h>
33*2fe8fb19SBen Gras #include <sys/param.h>
34*2fe8fb19SBen Gras #include <sys/socket.h>
35*2fe8fb19SBen Gras
36*2fe8fb19SBen Gras #include <netinet/in.h>
37*2fe8fb19SBen Gras #include <arpa/inet.h>
38*2fe8fb19SBen Gras #include <arpa/nameser.h>
39*2fe8fb19SBen Gras
40*2fe8fb19SBen Gras #include <assert.h>
41*2fe8fb19SBen Gras #include <ctype.h>
42*2fe8fb19SBen Gras #include <resolv.h>
43*2fe8fb19SBen Gras #include <resolv_mt.h>
44*2fe8fb19SBen Gras
45*2fe8fb19SBen Gras #include "port_after.h"
46*2fe8fb19SBen Gras
47*2fe8fb19SBen Gras #ifdef __weak_alias
__weak_alias(inet_nsap_addr,_inet_nsap_addr)48*2fe8fb19SBen Gras __weak_alias(inet_nsap_addr,_inet_nsap_addr)
49*2fe8fb19SBen Gras __weak_alias(inet_nsap_ntoa,_inet_nsap_ntoa)
50*2fe8fb19SBen Gras #endif
51*2fe8fb19SBen Gras
52*2fe8fb19SBen Gras static char
53*2fe8fb19SBen Gras xtob(int c) {
54*2fe8fb19SBen Gras return (c - (((c >= '0') && (c <= '9')) ? '0' : '7'));
55*2fe8fb19SBen Gras }
56*2fe8fb19SBen Gras
57*2fe8fb19SBen Gras u_int
inet_nsap_addr(const char * ascii,u_char * binary,int maxlen)58*2fe8fb19SBen Gras inet_nsap_addr(const char *ascii, u_char *binary, int maxlen) {
59*2fe8fb19SBen Gras u_char c, nib;
60*2fe8fb19SBen Gras u_int len = 0;
61*2fe8fb19SBen Gras
62*2fe8fb19SBen Gras _DIAGASSERT(ascii != NULL);
63*2fe8fb19SBen Gras _DIAGASSERT(binary != NULL);
64*2fe8fb19SBen Gras
65*2fe8fb19SBen Gras if (ascii[0] != '0' || (ascii[1] != 'x' && ascii[1] != 'X'))
66*2fe8fb19SBen Gras return (0);
67*2fe8fb19SBen Gras ascii += 2;
68*2fe8fb19SBen Gras
69*2fe8fb19SBen Gras while ((c = *ascii++) != '\0' && len < (u_int)maxlen) {
70*2fe8fb19SBen Gras if (c == '.' || c == '+' || c == '/')
71*2fe8fb19SBen Gras continue;
72*2fe8fb19SBen Gras if (!isascii(c))
73*2fe8fb19SBen Gras return (0);
74*2fe8fb19SBen Gras if (islower(c))
75*2fe8fb19SBen Gras c = toupper(c);
76*2fe8fb19SBen Gras if (isxdigit(c)) {
77*2fe8fb19SBen Gras nib = xtob(c);
78*2fe8fb19SBen Gras c = *ascii++;
79*2fe8fb19SBen Gras if (c != '\0') {
80*2fe8fb19SBen Gras c = toupper(c);
81*2fe8fb19SBen Gras if (isxdigit(c)) {
82*2fe8fb19SBen Gras *binary++ = (nib << 4) | xtob(c);
83*2fe8fb19SBen Gras len++;
84*2fe8fb19SBen Gras } else
85*2fe8fb19SBen Gras return (0);
86*2fe8fb19SBen Gras }
87*2fe8fb19SBen Gras else
88*2fe8fb19SBen Gras return (0);
89*2fe8fb19SBen Gras }
90*2fe8fb19SBen Gras else
91*2fe8fb19SBen Gras return (0);
92*2fe8fb19SBen Gras }
93*2fe8fb19SBen Gras return (len);
94*2fe8fb19SBen Gras }
95*2fe8fb19SBen Gras
96*2fe8fb19SBen Gras char *
inet_nsap_ntoa(int binlen,const u_char * binary,char * ascii)97*2fe8fb19SBen Gras inet_nsap_ntoa(int binlen, const u_char *binary, char *ascii) {
98*2fe8fb19SBen Gras int nib;
99*2fe8fb19SBen Gras int i;
100*2fe8fb19SBen Gras char *tmpbuf = inet_nsap_ntoa_tmpbuf;
101*2fe8fb19SBen Gras char *start;
102*2fe8fb19SBen Gras
103*2fe8fb19SBen Gras _DIAGASSERT(binary != NULL);
104*2fe8fb19SBen Gras
105*2fe8fb19SBen Gras if (ascii)
106*2fe8fb19SBen Gras start = ascii;
107*2fe8fb19SBen Gras else {
108*2fe8fb19SBen Gras ascii = tmpbuf;
109*2fe8fb19SBen Gras start = tmpbuf;
110*2fe8fb19SBen Gras }
111*2fe8fb19SBen Gras
112*2fe8fb19SBen Gras *ascii++ = '0';
113*2fe8fb19SBen Gras *ascii++ = 'x';
114*2fe8fb19SBen Gras
115*2fe8fb19SBen Gras if (binlen > 255)
116*2fe8fb19SBen Gras binlen = 255;
117*2fe8fb19SBen Gras
118*2fe8fb19SBen Gras for (i = 0; i < binlen; i++) {
119*2fe8fb19SBen Gras nib = (u_int32_t)*binary >> 4;
120*2fe8fb19SBen Gras *ascii++ = nib + (nib < 10 ? '0' : '7');
121*2fe8fb19SBen Gras nib = *binary++ & 0x0f;
122*2fe8fb19SBen Gras *ascii++ = nib + (nib < 10 ? '0' : '7');
123*2fe8fb19SBen Gras if (((i % 2) == 0 && (i + 1) < binlen))
124*2fe8fb19SBen Gras *ascii++ = '.';
125*2fe8fb19SBen Gras }
126*2fe8fb19SBen Gras *ascii = '\0';
127*2fe8fb19SBen Gras return (start);
128*2fe8fb19SBen Gras }
129*2fe8fb19SBen Gras
130*2fe8fb19SBen Gras /*! \file */
131