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 #include "lint.h" 41 42 #include <sys/types.h> 43 44 #include <netinet/in.h> 45 46 #include <ctype.h> 47 48 /* 49 * Internet network address interpretation routine. 50 * The library routines call this routine to interpret 51 * network numbers. 52 */ 53 in_addr_t 54 inet_network(const char *cp) 55 { 56 in_addr_t val; 57 int base; 58 ptrdiff_t n; 59 char c; 60 in_addr_t parts[4], *pp = parts; 61 int i; 62 63 again: 64 val = 0; base = 10; 65 if (*cp == '0') { 66 if (*++cp == 'x' || *cp == 'X') 67 base = 16, cp++; 68 else 69 base = 8; 70 } 71 while ((c = *cp) != NULL) { 72 if (isdigit(c)) { 73 if ((c - '0') >= base) 74 break; 75 val = (val * base) + (c - '0'); 76 cp++; 77 continue; 78 } 79 if (base == 16 && isxdigit(c)) { 80 val = (val << 4) + (c + 10 - (islower(c) ? 'a' : 'A')); 81 cp++; 82 continue; 83 } 84 break; 85 } 86 if (pp >= parts + 4 || val > 0xff) 87 return ((in_addr_t)-1); 88 *pp++ = val; 89 if (*cp == '.') { 90 cp++; 91 goto again; 92 } 93 if (*cp != '\0' && !isspace(*cp)) 94 return ((in_addr_t)-1); 95 n = pp - parts; 96 for (val = 0, i = 0; i < n; i++) { 97 val <<= 8; 98 val |= parts[i]; 99 } 100 return (val); 101 } 102