1 /* 2 * Copyright 1997-2003 Sun Microsystems, Inc. All rights reserved. 3 * Use is subject to license terms. 4 */ 5 6 /* 7 * Copyright (c) 1983, 1993 8 * The Regents of the University of California. All rights reserved. 9 * 10 * Redistribution and use in source and binary forms, with or without 11 * modification, are permitted provided that the following conditions 12 * are met: 13 * 1. Redistributions of source code must retain the above copyright 14 * notice, this list of conditions and the following disclaimer. 15 * 2. Redistributions in binary form must reproduce the above copyright 16 * notice, this list of conditions and the following disclaimer in the 17 * documentation and/or other materials provided with the distribution. 18 * 3. All advertising materials mentioning features or use of this software 19 * must display the following acknowledgement: 20 * This product includes software developed by the University of 21 * California, Berkeley and its contributors. 22 * 4. Neither the name of the University nor the names of its contributors 23 * may be used to endorse or promote products derived from this software 24 * without specific prior written permission. 25 * 26 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 27 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 28 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 29 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 30 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 31 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 32 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 33 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 34 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 35 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 36 * SUCH DAMAGE. 37 */ 38 39 #pragma ident "%Z%%M% %I% %E% SMI" 40 41 #if defined(LIBC_SCCS) && !defined(lint) 42 static const char sccsid[] = "@(#)inet_network.c 8.1 (Berkeley) 6/4/93"; 43 #endif /* LIBC_SCCS and not lint */ 44 45 #include "port_before.h" 46 47 #include <sys/types.h> 48 #include <netinet/in.h> 49 #include <arpa/inet.h> 50 #include <ctype.h> 51 52 #include "port_after.h" 53 54 /* 55 * Internet network address interpretation routine. 56 * The library routines call this routine to interpret 57 * network numbers. 58 */ 59 #ifdef ORIGINAL_ISC_CODE 60 u_long 61 #else 62 in_addr_t 63 #endif 64 inet_network(cp) 65 register const char *cp; 66 { 67 #ifdef ORIGINAL_ISC_CODE 68 register u_long val, base, n, i; 69 #else 70 register in_addr_t val, base, n, i; 71 #endif 72 register char c; 73 #ifdef ORIGINAL_ISC_CODE 74 u_long parts[4], *pp = parts; 75 #else 76 in_addr_t parts[4], *pp = parts; 77 #endif 78 int digit; 79 80 again: 81 val = 0; base = 10; digit = 0; 82 if (*cp == '0') 83 digit = 1, base = 8, cp++; 84 if (*cp == 'x' || *cp == 'X') 85 base = 16, cp++; 86 while ((c = *cp) != 0) { 87 if (isdigit((unsigned char)c)) { 88 if (base == 8 && (c == '8' || c == '9')) 89 return (INADDR_NONE); 90 val = (val * base) + (c - '0'); 91 cp++; 92 digit = 1; 93 continue; 94 } 95 if (base == 16 && isxdigit((unsigned char)c)) { 96 val = (val << 4) + 97 (c + 10 - (islower((unsigned char)c) ? 'a' : 'A')); 98 cp++; 99 digit = 1; 100 continue; 101 } 102 break; 103 } 104 if (!digit) 105 return (INADDR_NONE); 106 #ifdef ORIGINAL_ISC_CODE 107 if (*cp == '.') { 108 if (pp >= parts + 4 || val > 0xff) 109 return (INADDR_NONE); 110 #else 111 if (pp >= parts + 4 || val > 0xff) 112 return (INADDR_NONE); 113 if (*cp == '.') { 114 #endif 115 *pp++ = val, cp++; 116 goto again; 117 } 118 if (*cp && !isspace(*cp&0xff)) 119 return (INADDR_NONE); 120 *pp++ = val; 121 n = pp - parts; 122 if (n > 4) 123 return (INADDR_NONE); 124 for (val = 0, i = 0; i < n; i++) { 125 val <<= 8; 126 val |= parts[i] & 0xff; 127 } 128 return (val); 129 } 130