122 lines
2.8 KiB
C
122 lines
2.8 KiB
C
|
/* $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);
|
||
|
|
}
|