1 /* $NetBSD: pmap_rmt.c,v 1.29 2000/07/06 03:10:34 christos 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 = "@(#)pmap_rmt.c 1.21 87/08/27 Copyr 1984 Sun Micro"; 35 static char *sccsid = "@(#)pmap_rmt.c 2.2 88/08/01 4.0 RPCSRC"; 36 #endif 37 /* 38 * pmap_rmt.c 39 * Client interface to pmap rpc service. 40 * remote call and broadcast service 41 * 42 * Copyright (C) 1984, Sun Microsystems, Inc. 43 */ 44 45 #include "namespace.h" 46 #include <sys/types.h> 47 #include <sys/ioctl.h> 48 #include <sys/poll.h> 49 #include <sys/socket.h> 50 51 #include <net/if.h> 52 #include <netinet/in.h> 53 #include <arpa/inet.h> 54 55 #include <assert.h> 56 #include <err.h> 57 #include <errno.h> 58 #include <stdio.h> 59 #include <string.h> 60 #include <unistd.h> 61 62 #include <rpc/rpc.h> 63 #include <rpc/pmap_prot.h> 64 #include <rpc/pmap_clnt.h> 65 #include <rpc/pmap_rmt.h> 66 #include "un-namespace.h" 67 68 static const struct timeval timeout = { 3, 0 }; 69 70 /* 71 * pmapper remote-call-service interface. 72 * This routine is used to call the pmapper remote call service 73 * which will look up a service program in the port maps, and then 74 * remotely call that routine with the given parameters. This allows 75 * programs to do a lookup and call in one step. 76 */ 77 enum clnt_stat 78 pmap_rmtcall(struct sockaddr_in *addr, u_long prog, u_long vers, u_long proc, 79 xdrproc_t xdrargs, caddr_t argsp, xdrproc_t xdrres, caddr_t resp, 80 struct timeval tout, u_long *port_ptr) 81 { 82 int sock = -1; 83 CLIENT *client; 84 struct rmtcallargs a; 85 struct rmtcallres r; 86 enum clnt_stat stat; 87 88 assert(addr != NULL); 89 assert(port_ptr != NULL); 90 91 addr->sin_port = htons(PMAPPORT); 92 client = clntudp_create(addr, PMAPPROG, PMAPVERS, timeout, &sock); 93 if (client != NULL) { 94 a.prog = prog; 95 a.vers = vers; 96 a.proc = proc; 97 a.args_ptr = argsp; 98 a.xdr_args = xdrargs; 99 r.port_ptr = port_ptr; 100 r.results_ptr = resp; 101 r.xdr_results = xdrres; 102 stat = CLNT_CALL(client, (rpcproc_t)PMAPPROC_CALLIT, 103 (xdrproc_t)xdr_rmtcall_args, &a, (xdrproc_t)xdr_rmtcallres, 104 &r, tout); 105 CLNT_DESTROY(client); 106 } else { 107 stat = RPC_FAILED; 108 } 109 addr->sin_port = 0; 110 return (stat); 111 } 112 113 114 /* 115 * XDR remote call arguments 116 * written for XDR_ENCODE direction only 117 */ 118 bool_t 119 xdr_rmtcall_args(XDR *xdrs, struct rmtcallargs *cap) 120 { 121 u_int lenposition, argposition, position; 122 123 assert(xdrs != NULL); 124 assert(cap != NULL); 125 126 if (xdr_u_long(xdrs, &(cap->prog)) && 127 xdr_u_long(xdrs, &(cap->vers)) && 128 xdr_u_long(xdrs, &(cap->proc))) { 129 lenposition = XDR_GETPOS(xdrs); 130 if (! xdr_u_long(xdrs, &(cap->arglen))) 131 return (FALSE); 132 argposition = XDR_GETPOS(xdrs); 133 if (! (*(cap->xdr_args))(xdrs, cap->args_ptr)) 134 return (FALSE); 135 position = XDR_GETPOS(xdrs); 136 cap->arglen = (u_long)position - (u_long)argposition; 137 XDR_SETPOS(xdrs, lenposition); 138 if (! xdr_u_long(xdrs, &(cap->arglen))) 139 return (FALSE); 140 XDR_SETPOS(xdrs, position); 141 return (TRUE); 142 } 143 return (FALSE); 144 } 145 146 /* 147 * XDR remote call results 148 * written for XDR_DECODE direction only 149 */ 150 bool_t 151 xdr_rmtcallres(XDR *xdrs, struct rmtcallres *crp) 152 { 153 caddr_t port_ptr; 154 155 assert(xdrs != NULL); 156 assert(crp != NULL); 157 158 port_ptr = (caddr_t)(void *)crp->port_ptr; 159 if (xdr_reference(xdrs, &port_ptr, sizeof (u_long), 160 (xdrproc_t)xdr_u_long) && xdr_u_long(xdrs, &crp->resultslen)) { 161 crp->port_ptr = (u_long *)(void *)port_ptr; 162 return ((*(crp->xdr_results))(xdrs, crp->results_ptr)); 163 } 164 return (FALSE); 165 } 166