1 /* $NetBSD: getrpcport.c,v 1.16 2000/01/22 22:19:18 mycroft Exp $ */ 2 3 /*- 4 * SPDX-License-Identifier: BSD-3-Clause 5 * 6 * Copyright (c) 2009, Sun Microsystems, Inc. 7 * All rights reserved. 8 * 9 * Redistribution and use in source and binary forms, with or without 10 * modification, are permitted provided that the following conditions are met: 11 * - Redistributions of source code must retain the above copyright notice, 12 * this list of conditions and the following disclaimer. 13 * - Redistributions in binary form must reproduce the above copyright notice, 14 * this list of conditions and the following disclaimer in the documentation 15 * and/or other materials provided with the distribution. 16 * - Neither the name of Sun Microsystems, Inc. nor the names of its 17 * contributors may be used to endorse or promote products derived 18 * from this software without specific prior written permission. 19 * 20 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" 21 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 22 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 23 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE 24 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 25 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 26 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 27 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 28 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 29 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 30 * POSSIBILITY OF SUCH DAMAGE. 31 */ 32 33 #if defined(LIBC_SCCS) && !defined(lint) 34 static char *sccsid2 = "@(#)getrpcport.c 1.3 87/08/11 SMI"; 35 static char *sccsid = "@(#)getrpcport.c 2.1 88/07/29 4.0 RPCSRC"; 36 #endif 37 #include <sys/cdefs.h> 38 /* 39 * Copyright (c) 1985 by Sun Microsystems, Inc. 40 */ 41 42 #include "namespace.h" 43 #include <sys/types.h> 44 #include <sys/socket.h> 45 46 #include <assert.h> 47 #include <netdb.h> 48 #include <stdio.h> 49 #include <string.h> 50 51 #include <rpc/rpc.h> 52 #include <rpc/pmap_clnt.h> 53 #include "un-namespace.h" 54 55 int 56 getrpcport(char *host, int prognum, int versnum, int proto) 57 { 58 struct sockaddr_in addr; 59 struct hostent *hp; 60 61 assert(host != NULL); 62 63 if ((hp = gethostbyname2(host, AF_INET)) == NULL) 64 return (0); 65 memset(&addr, 0, sizeof(addr)); 66 addr.sin_len = sizeof(struct sockaddr_in); 67 addr.sin_family = AF_INET; 68 addr.sin_port = 0; 69 if (hp->h_length > sizeof(addr.sin_addr.s_addr)) 70 hp->h_length = sizeof(addr.sin_addr.s_addr); 71 memcpy(&addr.sin_addr.s_addr, hp->h_addr, (size_t)hp->h_length); 72 /* Inconsistent interfaces need casts! :-( */ 73 return (pmap_getport(&addr, (u_long)prognum, (u_long)versnum, 74 (u_int)proto)); 75 } 76