1*0Sstevel@tonic-gate /* 2*0Sstevel@tonic-gate * Copyright (c) 1997-2000 by Sun Microsystems, Inc. 3*0Sstevel@tonic-gate * All rights reserved. 4*0Sstevel@tonic-gate */ 5*0Sstevel@tonic-gate 6*0Sstevel@tonic-gate /* 7*0Sstevel@tonic-gate * Copyright (c) 1983, 1993 8*0Sstevel@tonic-gate * The Regents of the University of California. All rights reserved. 9*0Sstevel@tonic-gate * 10*0Sstevel@tonic-gate * Redistribution and use in source and binary forms, with or without 11*0Sstevel@tonic-gate * modification, are permitted provided that the following conditions 12*0Sstevel@tonic-gate * are met: 13*0Sstevel@tonic-gate * 1. Redistributions of source code must retain the above copyright 14*0Sstevel@tonic-gate * notice, this list of conditions and the following disclaimer. 15*0Sstevel@tonic-gate * 2. Redistributions in binary form must reproduce the above copyright 16*0Sstevel@tonic-gate * notice, this list of conditions and the following disclaimer in the 17*0Sstevel@tonic-gate * documentation and/or other materials provided with the distribution. 18*0Sstevel@tonic-gate * 3. All advertising materials mentioning features or use of this software 19*0Sstevel@tonic-gate * must display the following acknowledgement: 20*0Sstevel@tonic-gate * This product includes software developed by the University of 21*0Sstevel@tonic-gate * California, Berkeley and its contributors. 22*0Sstevel@tonic-gate * 4. Neither the name of the University nor the names of its contributors 23*0Sstevel@tonic-gate * may be used to endorse or promote products derived from this software 24*0Sstevel@tonic-gate * without specific prior written permission. 25*0Sstevel@tonic-gate * 26*0Sstevel@tonic-gate * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 27*0Sstevel@tonic-gate * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 28*0Sstevel@tonic-gate * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 29*0Sstevel@tonic-gate * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 30*0Sstevel@tonic-gate * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 31*0Sstevel@tonic-gate * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 32*0Sstevel@tonic-gate * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 33*0Sstevel@tonic-gate * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 34*0Sstevel@tonic-gate * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 35*0Sstevel@tonic-gate * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 36*0Sstevel@tonic-gate * SUCH DAMAGE. 37*0Sstevel@tonic-gate */ 38*0Sstevel@tonic-gate 39*0Sstevel@tonic-gate #pragma ident "%Z%%M% %I% %E% SMI" 40*0Sstevel@tonic-gate 41*0Sstevel@tonic-gate #if defined(LIBC_SCCS) && !defined(lint) 42*0Sstevel@tonic-gate static const char sccsid[] = "@(#)inet_netof.c 8.1 (Berkeley) 6/4/93"; 43*0Sstevel@tonic-gate #endif /* LIBC_SCCS and not lint */ 44*0Sstevel@tonic-gate 45*0Sstevel@tonic-gate #include "port_before.h" 46*0Sstevel@tonic-gate 47*0Sstevel@tonic-gate #include <sys/param.h> 48*0Sstevel@tonic-gate #include <netinet/in.h> 49*0Sstevel@tonic-gate #include <arpa/inet.h> 50*0Sstevel@tonic-gate 51*0Sstevel@tonic-gate #include "port_after.h" 52*0Sstevel@tonic-gate 53*0Sstevel@tonic-gate /* 54*0Sstevel@tonic-gate * Return the network number from an internet 55*0Sstevel@tonic-gate * address; handles class a/b/c network #'s. 56*0Sstevel@tonic-gate */ 57*0Sstevel@tonic-gate #ifdef ORIGINAL_ISC_CODE 58*0Sstevel@tonic-gate u_long 59*0Sstevel@tonic-gate #else 60*0Sstevel@tonic-gate in_addr_t 61*0Sstevel@tonic-gate #endif 62*0Sstevel@tonic-gate inet_netof(in) 63*0Sstevel@tonic-gate struct in_addr in; 64*0Sstevel@tonic-gate { 65*0Sstevel@tonic-gate #ifdef ORIGINAL_ISC_CODE 66*0Sstevel@tonic-gate register u_long i = ntohl(in.s_addr); 67*0Sstevel@tonic-gate #else 68*0Sstevel@tonic-gate register in_addr_t i = ntohl(in.s_addr); 69*0Sstevel@tonic-gate #endif 70*0Sstevel@tonic-gate 71*0Sstevel@tonic-gate if (IN_CLASSA(i)) 72*0Sstevel@tonic-gate return (((i)&IN_CLASSA_NET) >> IN_CLASSA_NSHIFT); 73*0Sstevel@tonic-gate else if (IN_CLASSB(i)) 74*0Sstevel@tonic-gate return (((i)&IN_CLASSB_NET) >> IN_CLASSB_NSHIFT); 75*0Sstevel@tonic-gate else 76*0Sstevel@tonic-gate return (((i)&IN_CLASSC_NET) >> IN_CLASSC_NSHIFT); 77*0Sstevel@tonic-gate } 78