1/* 2 * Copyright (c) 2004 by Internet Systems Consortium, Inc. ("ISC") 3 * Copyright (c) 1996-1999 by Internet Software Consortium. 4 * 5 * Permission to use, copy, modify, and distribute this software for any 6 * purpose with or without fee is hereby granted, provided that the above 7 * copyright notice and this permission notice appear in all copies. 8 * 9 * THE SOFTWARE IS PROVIDED "AS IS" AND ISC DISCLAIMS ALL WARRANTIES 10 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF 11 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL ISC BE LIABLE FOR 12 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES 13 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN 14 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT 15 * OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. 16 */ 17 18#if defined(LIBC_SCCS) && !defined(lint) 19static const char rcsid[] = "$Id: nsap_addr.c,v 1.3.18.2 2005/07/28 07:38:08 marka Exp $"; 20 21/* the algorithms only can deal with ASCII, so we optimize for it */ 22#define USE_ASCII 23 24#endif /* LIBC_SCCS and not lint */ 25#include <sys/cdefs.h> 26__FBSDID("$FreeBSD: src/lib/libc/inet/nsap_addr.c,v 1.3 2007/06/03 17:20:26 ume Exp $"); 27 28#include "port_before.h" 29 30#include <sys/types.h> 31#include <sys/param.h> 32#include <sys/socket.h> 33 34#include <netinet/in.h> 35#include <arpa/inet.h> 36#include <arpa/nameser.h> 37 38#include <ctype.h> 39#include <resolv.h> 40//#include <resolv_mt.h> 41 42#include "port_after.h" 43 44#include <stdlib.h> 45 46static char 47xtob(int c) { 48 return (c - (((c >= '0') && (c <= '9')) ? '0' : '7')); 49} 50 51u_int 52inet_nsap_addr(const char *ascii, u_char *binary, int maxlen) { 53 u_char c, nib; 54 u_int len = 0; 55 56 if (ascii[0] != '0' || (ascii[1] != 'x' && ascii[1] != 'X')) 57 return (0); 58 ascii += 2; 59 60 while ((c = *ascii++) != '\0' && len < (u_int)maxlen) { 61 if (c == '.' || c == '+' || c == '/') 62 continue; 63 if (!isascii(c)) 64 return (0); 65 if (islower(c)) 66 c = toupper(c); 67 if (isxdigit(c)) { 68 nib = xtob(c); 69 c = *ascii++; 70 if (c != '\0') { 71 c = toupper(c); 72 if (isxdigit(c)) { 73 *binary++ = (nib << 4) | xtob(c); 74 len++; 75 } else 76 return (0); 77 } 78 else 79 return (0); 80 } 81 else 82 return (0); 83 } 84 return (len); 85} 86 87char * 88inet_nsap_ntoa(int binlen, const u_char *binary, char *ascii) { 89 int nib; 90 int i; 91 char *tmpbuf = NULL; 92 char *start; 93 94 if (tmpbuf == NULL) { 95 tmpbuf = malloc(255*3); 96 if (tmpbuf == NULL) return NULL; 97 } 98 if (ascii) 99 start = ascii; 100 else { 101 ascii = tmpbuf; 102 start = tmpbuf; 103 } 104 105 *ascii++ = '0'; 106 *ascii++ = 'x'; 107 108 if (binlen > 255) 109 binlen = 255; 110 111 for (i = 0; i < binlen; i++) { 112 nib = *binary >> 4; 113 *ascii++ = nib + (nib < 10 ? '0' : '7'); 114 nib = *binary++ & 0x0f; 115 *ascii++ = nib + (nib < 10 ? '0' : '7'); 116 if (((i % 2) == 0 && (i + 1) < binlen)) 117 *ascii++ = '.'; 118 } 119 *ascii = '\0'; 120 return (start); 121} 122 123/* 124 * Weak aliases for applications that use certain private entry points, 125 * and fail to include <arpa/inet.h>. 126 */ 127#undef inet_nsap_addr 128__weak_reference(__inet_nsap_addr, inet_nsap_addr); 129#undef inet_nsap_ntoa 130__weak_reference(__inet_nsap_ntoa, inet_nsap_ntoa); 131 132/*! \file */ 133