1156952Sume/* 2156952Sume * Copyright (c) 1983, 1993 3156952Sume * The Regents of the University of California. All rights reserved. 4156952Sume * 5156952Sume * Redistribution and use in source and binary forms, with or without 6156952Sume * modification, are permitted provided that the following conditions 7156952Sume * are met: 8156952Sume * 1. Redistributions of source code must retain the above copyright 9156952Sume * notice, this list of conditions and the following disclaimer. 10156952Sume * 2. Redistributions in binary form must reproduce the above copyright 11156952Sume * notice, this list of conditions and the following disclaimer in the 12156952Sume * documentation and/or other materials provided with the distribution. 13156952Sume * 4. Neither the name of the University nor the names of its contributors 14156952Sume * may be used to endorse or promote products derived from this software 15156952Sume * without specific prior written permission. 16156952Sume * 17156952Sume * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 18156952Sume * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 19156952Sume * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 20156952Sume * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 21156952Sume * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 22156952Sume * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 23156952Sume * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 24156952Sume * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 25156952Sume * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 26156952Sume * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 27156952Sume * SUCH DAMAGE. 28156952Sume */ 29156952Sume 30156952Sume#if defined(LIBC_SCCS) && !defined(lint) 31156952Sumestatic const char sccsid[] = "@(#)inet_network.c 8.1 (Berkeley) 6/4/93"; 32156952Sume#endif /* LIBC_SCCS and not lint */ 33156956Sume#include <sys/cdefs.h> 34156956Sume__FBSDID("$FreeBSD$"); 35156952Sume 36156952Sume#include "port_before.h" 37156952Sume 38156952Sume#include <sys/types.h> 39156952Sume#include <netinet/in.h> 40156952Sume#include <arpa/inet.h> 41156952Sume#include <ctype.h> 42156952Sume 43156952Sume#include "port_after.h" 44156952Sume 45170244Sume/*% 46156952Sume * Internet network address interpretation routine. 47156952Sume * The library routines call this routine to interpret 48156952Sume * network numbers. 49156952Sume */ 50156956Sumein_addr_t 51156952Sumeinet_network(cp) 52156956Sume const char *cp; 53156952Sume{ 54156956Sume in_addr_t val, base, n; 55156956Sume char c; 56156956Sume in_addr_t parts[4], *pp = parts; 57156956Sume int i, digit; 58156952Sume 59156952Sumeagain: 60156952Sume val = 0; base = 10; digit = 0; 61156952Sume if (*cp == '0') 62156952Sume digit = 1, base = 8, cp++; 63156952Sume if (*cp == 'x' || *cp == 'X') 64156952Sume base = 16, cp++; 65156952Sume while ((c = *cp) != 0) { 66156952Sume if (isdigit((unsigned char)c)) { 67156952Sume if (base == 8U && (c == '8' || c == '9')) 68156952Sume return (INADDR_NONE); 69156952Sume val = (val * base) + (c - '0'); 70156952Sume cp++; 71156952Sume digit = 1; 72156952Sume continue; 73156952Sume } 74156952Sume if (base == 16U && isxdigit((unsigned char)c)) { 75156952Sume val = (val << 4) + 76156952Sume (c + 10 - (islower((unsigned char)c) ? 'a' : 'A')); 77156952Sume cp++; 78156952Sume digit = 1; 79156952Sume continue; 80156952Sume } 81156952Sume break; 82156952Sume } 83156952Sume if (!digit) 84156952Sume return (INADDR_NONE); 85175330Scperciva if (pp >= parts + 4 || val > 0xffU) 86175330Scperciva return (INADDR_NONE); 87156952Sume if (*cp == '.') { 88156952Sume *pp++ = val, cp++; 89156952Sume goto again; 90156952Sume } 91156952Sume if (*cp && !isspace(*cp&0xff)) 92156952Sume return (INADDR_NONE); 93156952Sume *pp++ = val; 94156952Sume n = pp - parts; 95156952Sume if (n > 4U) 96156952Sume return (INADDR_NONE); 97156952Sume for (val = 0, i = 0; i < n; i++) { 98156952Sume val <<= 8; 99156952Sume val |= parts[i] & 0xff; 100156952Sume } 101156952Sume return (val); 102156952Sume} 103156956Sume 104156956Sume/* 105156956Sume * Weak aliases for applications that use certain private entry points, 106156956Sume * and fail to include <arpa/inet.h>. 107156956Sume */ 108156956Sume#undef inet_network 109156956Sume__weak_reference(__inet_network, inet_network); 110170244Sume 111170244Sume/*! \file */ 112