16e778a7eSPedro F. Giffuni /*- 26e778a7eSPedro F. Giffuni * SPDX-License-Identifier: ISC 36e778a7eSPedro F. Giffuni * 465e96449SHajimu UMEMOTO * Copyright (c) 2004 by Internet Systems Consortium, Inc. ("ISC") 565e96449SHajimu UMEMOTO * Copyright (c) 1996-1999 by Internet Software Consortium. 665e96449SHajimu UMEMOTO * 765e96449SHajimu UMEMOTO * Permission to use, copy, modify, and distribute this software for any 865e96449SHajimu UMEMOTO * purpose with or without fee is hereby granted, provided that the above 965e96449SHajimu UMEMOTO * copyright notice and this permission notice appear in all copies. 1065e96449SHajimu UMEMOTO * 1165e96449SHajimu UMEMOTO * THE SOFTWARE IS PROVIDED "AS IS" AND ISC DISCLAIMS ALL WARRANTIES 1265e96449SHajimu UMEMOTO * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF 1365e96449SHajimu UMEMOTO * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL ISC BE LIABLE FOR 1465e96449SHajimu UMEMOTO * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES 1565e96449SHajimu UMEMOTO * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN 1665e96449SHajimu UMEMOTO * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT 1765e96449SHajimu UMEMOTO * OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. 1865e96449SHajimu UMEMOTO */ 1965e96449SHajimu UMEMOTO 2065e96449SHajimu UMEMOTO #if defined(LIBC_SCCS) && !defined(lint) 21046c3635SPedro F. Giffuni static const char rcsid[] = "$Id: nsap_addr.c,v 1.5 2005/07/28 06:51:48 marka Exp $"; 2265e96449SHajimu UMEMOTO #endif /* LIBC_SCCS and not lint */ 23ab96eeabSHajimu UMEMOTO #include <sys/cdefs.h> 24ab96eeabSHajimu UMEMOTO __FBSDID("$FreeBSD$"); 2565e96449SHajimu UMEMOTO 2665e96449SHajimu UMEMOTO #include "port_before.h" 2765e96449SHajimu UMEMOTO 2865e96449SHajimu UMEMOTO #include <sys/param.h> 2965e96449SHajimu UMEMOTO #include <sys/socket.h> 3065e96449SHajimu UMEMOTO 3165e96449SHajimu UMEMOTO #include <netinet/in.h> 3265e96449SHajimu UMEMOTO #include <arpa/inet.h> 3365e96449SHajimu UMEMOTO #include <arpa/nameser.h> 3465e96449SHajimu UMEMOTO 3565e96449SHajimu UMEMOTO #include <ctype.h> 3665e96449SHajimu UMEMOTO #include <resolv.h> 3765e96449SHajimu UMEMOTO #include <resolv_mt.h> 3865e96449SHajimu UMEMOTO 3965e96449SHajimu UMEMOTO #include "port_after.h" 4065e96449SHajimu UMEMOTO 4165e96449SHajimu UMEMOTO static char 4265e96449SHajimu UMEMOTO xtob(int c) { 4365e96449SHajimu UMEMOTO return (c - (((c >= '0') && (c <= '9')) ? '0' : '7')); 4465e96449SHajimu UMEMOTO } 4565e96449SHajimu UMEMOTO 4665e96449SHajimu UMEMOTO u_int 4765e96449SHajimu UMEMOTO inet_nsap_addr(const char *ascii, u_char *binary, int maxlen) { 4865e96449SHajimu UMEMOTO u_char c, nib; 4965e96449SHajimu UMEMOTO u_int len = 0; 5065e96449SHajimu UMEMOTO 5165e96449SHajimu UMEMOTO if (ascii[0] != '0' || (ascii[1] != 'x' && ascii[1] != 'X')) 5265e96449SHajimu UMEMOTO return (0); 5365e96449SHajimu UMEMOTO ascii += 2; 5465e96449SHajimu UMEMOTO 5565e96449SHajimu UMEMOTO while ((c = *ascii++) != '\0' && len < (u_int)maxlen) { 5665e96449SHajimu UMEMOTO if (c == '.' || c == '+' || c == '/') 5765e96449SHajimu UMEMOTO continue; 5865e96449SHajimu UMEMOTO if (!isascii(c)) 5965e96449SHajimu UMEMOTO return (0); 6065e96449SHajimu UMEMOTO if (islower(c)) 6165e96449SHajimu UMEMOTO c = toupper(c); 6265e96449SHajimu UMEMOTO if (isxdigit(c)) { 6365e96449SHajimu UMEMOTO nib = xtob(c); 6465e96449SHajimu UMEMOTO c = *ascii++; 6565e96449SHajimu UMEMOTO if (c != '\0') { 6665e96449SHajimu UMEMOTO c = toupper(c); 6765e96449SHajimu UMEMOTO if (isxdigit(c)) { 6865e96449SHajimu UMEMOTO *binary++ = (nib << 4) | xtob(c); 6965e96449SHajimu UMEMOTO len++; 7065e96449SHajimu UMEMOTO } else 7165e96449SHajimu UMEMOTO return (0); 7265e96449SHajimu UMEMOTO } 7365e96449SHajimu UMEMOTO else 7465e96449SHajimu UMEMOTO return (0); 7565e96449SHajimu UMEMOTO } 7665e96449SHajimu UMEMOTO else 7765e96449SHajimu UMEMOTO return (0); 7865e96449SHajimu UMEMOTO } 7965e96449SHajimu UMEMOTO return (len); 8065e96449SHajimu UMEMOTO } 8165e96449SHajimu UMEMOTO 8265e96449SHajimu UMEMOTO char * 8365e96449SHajimu UMEMOTO inet_nsap_ntoa(int binlen, const u_char *binary, char *ascii) { 8465e96449SHajimu UMEMOTO int nib; 8565e96449SHajimu UMEMOTO int i; 8665e96449SHajimu UMEMOTO char *tmpbuf = inet_nsap_ntoa_tmpbuf; 8765e96449SHajimu UMEMOTO char *start; 8865e96449SHajimu UMEMOTO 8965e96449SHajimu UMEMOTO if (ascii) 9065e96449SHajimu UMEMOTO start = ascii; 9165e96449SHajimu UMEMOTO else { 9265e96449SHajimu UMEMOTO ascii = tmpbuf; 9365e96449SHajimu UMEMOTO start = tmpbuf; 9465e96449SHajimu UMEMOTO } 9565e96449SHajimu UMEMOTO 9665e96449SHajimu UMEMOTO *ascii++ = '0'; 9765e96449SHajimu UMEMOTO *ascii++ = 'x'; 9865e96449SHajimu UMEMOTO 9965e96449SHajimu UMEMOTO if (binlen > 255) 10065e96449SHajimu UMEMOTO binlen = 255; 10165e96449SHajimu UMEMOTO 10265e96449SHajimu UMEMOTO for (i = 0; i < binlen; i++) { 10365e96449SHajimu UMEMOTO nib = *binary >> 4; 10465e96449SHajimu UMEMOTO *ascii++ = nib + (nib < 10 ? '0' : '7'); 10565e96449SHajimu UMEMOTO nib = *binary++ & 0x0f; 10665e96449SHajimu UMEMOTO *ascii++ = nib + (nib < 10 ? '0' : '7'); 10765e96449SHajimu UMEMOTO if (((i % 2) == 0 && (i + 1) < binlen)) 10865e96449SHajimu UMEMOTO *ascii++ = '.'; 10965e96449SHajimu UMEMOTO } 11065e96449SHajimu UMEMOTO *ascii = '\0'; 11165e96449SHajimu UMEMOTO return (start); 11265e96449SHajimu UMEMOTO } 113ab96eeabSHajimu UMEMOTO 114ab96eeabSHajimu UMEMOTO /* 115ab96eeabSHajimu UMEMOTO * Weak aliases for applications that use certain private entry points, 116ab96eeabSHajimu UMEMOTO * and fail to include <arpa/inet.h>. 117ab96eeabSHajimu UMEMOTO */ 118ab96eeabSHajimu UMEMOTO #undef inet_nsap_addr 119ab96eeabSHajimu UMEMOTO __weak_reference(__inet_nsap_addr, inet_nsap_addr); 120ab96eeabSHajimu UMEMOTO #undef inet_nsap_ntoa 121ab96eeabSHajimu UMEMOTO __weak_reference(__inet_nsap_ntoa, inet_nsap_ntoa); 122dde4a85dSHajimu UMEMOTO 123dde4a85dSHajimu UMEMOTO /*! \file */ 124