1 /* 2 * CDDL HEADER START 3 * 4 * The contents of this file are subject to the terms of the 5 * Common Development and Distribution License, Version 1.0 only 6 * (the "License"). You may not use this file except in compliance 7 * with the License. 8 * 9 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE 10 * or http://www.opensolaris.org/os/licensing. 11 * See the License for the specific language governing permissions 12 * and limitations under the License. 13 * 14 * When distributing Covered Code, include this CDDL HEADER in each 15 * file and include the License file at usr/src/OPENSOLARIS.LICENSE. 16 * If applicable, add the following below this CDDL HEADER, with the 17 * fields enclosed by brackets "[]" replaced with your own identifying 18 * information: Portions Copyright [yyyy] [name of copyright owner] 19 * 20 * CDDL HEADER END 21 */ 22 /* 23 * Copyright 2001 Sun Microsystems, Inc. All rights reserved. 24 * Use is subject to license terms. 25 */ 26 27 /* Copyright (c) 1984, 1986, 1987, 1988, 1989 AT&T */ 28 /* All Rights Reserved */ 29 30 /* 31 * University Copyright- Copyright (c) 1982, 1986, 1988 32 * The Regents of the University of California 33 * All Rights Reserved 34 * 35 * University Acknowledgment- Portions of this document are derived from 36 * software developed by the University of California, Berkeley, and its 37 * contributors. 38 */ 39 40 #pragma ident "%Z%%M% %I% %E% SMI" 41 42 #include <sys/types.h> 43 #include <ctype.h> 44 #include <netinet/in.h> 45 46 /* 47 * Internet network address interpretation routine. 48 * The library routines call this routine to interpret 49 * network numbers. 50 */ 51 in_addr_t 52 inet_network(const char *cp) 53 { 54 in_addr_t val; 55 int base; 56 ptrdiff_t n; 57 char c; 58 in_addr_t parts[4], *pp = parts; 59 int i; 60 61 again: 62 val = 0; base = 10; 63 if (*cp == '0') { 64 if (*++cp == 'x' || *cp == 'X') 65 base = 16, cp++; 66 else 67 base = 8; 68 } 69 while ((c = *cp) != NULL) { 70 if (isdigit(c)) { 71 if ((c - '0') >= base) 72 break; 73 val = (val * base) + (c - '0'); 74 cp++; 75 continue; 76 } 77 if (base == 16 && isxdigit(c)) { 78 val = (val << 4) + (c + 10 - (islower(c) ? 'a' : 'A')); 79 cp++; 80 continue; 81 } 82 break; 83 } 84 if (pp >= parts + 4 || val > 0xff) 85 return ((in_addr_t)-1); 86 *pp++ = val; 87 if (*cp == '.') { 88 cp++; 89 goto again; 90 } 91 if (*cp != '\0' && !isspace(*cp)) 92 return ((in_addr_t)-1); 93 n = pp - parts; 94 for (val = 0, i = 0; i < n; i++) { 95 val <<= 8; 96 val |= parts[i]; 97 } 98 return (val); 99 } 100