1 /* $NetBSD: getrpcport.c,v 1.18 2013/03/11 20:19:29 tron Exp $ */ 2 3 /* 4 * Copyright (c) 2010, Oracle America, Inc. 5 * 6 * Redistribution and use in source and binary forms, with or without 7 * modification, are permitted provided that the following conditions are 8 * met: 9 * 10 * * Redistributions of source code must retain the above copyright 11 * notice, this list of conditions and the following disclaimer. 12 * * Redistributions in binary form must reproduce the above 13 * copyright notice, this list of conditions and the following 14 * disclaimer in the documentation and/or other materials 15 * provided with the distribution. 16 * * Neither the name of the "Oracle America, 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 21 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 22 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS 23 * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE 24 * COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, 25 * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 26 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE 27 * GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 28 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, 29 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING 30 * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 31 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 32 */ 33 34 #include <sys/cdefs.h> 35 #if defined(LIBC_SCCS) && !defined(lint) 36 #if 0 37 static char *sccsid = "@(#)getrpcport.c 1.3 87/08/11 SMI"; 38 static char *sccsid = "@(#)getrpcport.c 2.1 88/07/29 4.0 RPCSRC"; 39 #else 40 __RCSID("$NetBSD: getrpcport.c,v 1.18 2013/03/11 20:19:29 tron Exp $"); 41 #endif 42 #endif 43 44 /* 45 * Copyright (c) 1985 by Sun Microsystems, Inc. 46 */ 47 48 #include "namespace.h" 49 50 #include <sys/types.h> 51 #include <sys/socket.h> 52 53 #include <assert.h> 54 #include <netdb.h> 55 #include <stdio.h> 56 #include <string.h> 57 58 #include <rpc/rpc.h> 59 #include <rpc/pmap_clnt.h> 60 61 #ifdef __weak_alias 62 __weak_alias(getrpcport,_getrpcport) 63 #endif 64 65 int 66 getrpcport(char *host, int prognum, int versnum, int proto) 67 { 68 struct sockaddr_in addr; 69 struct hostent *hp; 70 71 _DIAGASSERT(host != NULL); 72 73 if ((hp = gethostbyname(host)) == NULL) 74 return (0); 75 memset(&addr, 0, sizeof(addr)); 76 addr.sin_len = sizeof(struct sockaddr_in); 77 addr.sin_family = AF_INET; 78 addr.sin_port = 0; 79 if (hp->h_length > addr.sin_len) 80 hp->h_length = addr.sin_len; 81 memcpy(&addr.sin_addr.s_addr, hp->h_addr, (size_t)hp->h_length); 82 /* Inconsistent interfaces need casts! :-( */ 83 return (pmap_getport(&addr, (u_long)prognum, (u_long)versnum, 84 (u_int)proto)); 85 } 86