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