1 /*- 2 * Copyright (c) 2009, Sun Microsystems, Inc. 3 * All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions are met: 7 * - Redistributions of source code must retain the above copyright notice, 8 * this list of conditions and the following disclaimer. 9 * - Redistributions in binary form must reproduce the above copyright notice, 10 * this list of conditions and the following disclaimer in the documentation 11 * and/or other materials provided with the distribution. 12 * - Neither the name of Sun Microsystems, Inc. nor the names of its 13 * contributors may be used to endorse or promote products derived 14 * from this software without specific prior written permission. 15 * 16 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" 17 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 18 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 19 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE 20 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 21 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 22 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 23 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 24 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 25 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 26 * POSSIBILITY OF SUCH DAMAGE. 27 * 28 * @(#)pmap_rmt.c 1.21 87/08/27 Copyr 1984 Sun Micro 29 * @(#)pmap_rmt.c 2.2 88/08/01 4.0 RPCSRC 30 * $NetBSD: pmap_rmt.c,v 1.29 2000/07/06 03:10:34 christos Exp $ 31 * $FreeBSD: src/lib/libc/rpc/pmap_rmt.c,v 1.20 2004/10/16 06:11:35 obrien Exp $ 32 * $DragonFly: src/lib/libc/rpc/pmap_rmt.c,v 1.5 2005/11/13 12:27:04 swildner Exp $ 33 */ 34 35 /* 36 * pmap_rmt.c 37 * Client interface to pmap rpc service. 38 * remote call and broadcast service 39 * 40 * Copyright (C) 1984, Sun Microsystems, Inc. 41 */ 42 43 #include "namespace.h" 44 #include <sys/types.h> 45 #include <sys/ioctl.h> 46 #include <sys/poll.h> 47 #include <sys/socket.h> 48 49 #include <net/if.h> 50 #include <netinet/in.h> 51 #include <arpa/inet.h> 52 53 #include <assert.h> 54 #include <err.h> 55 #include <errno.h> 56 #include <stdio.h> 57 #include <string.h> 58 #include <unistd.h> 59 60 #include <rpc/rpc.h> 61 #include <rpc/pmap_prot.h> 62 #include <rpc/pmap_clnt.h> 63 #include <rpc/pmap_rmt.h> 64 #include "un-namespace.h" 65 66 static const struct timeval timeout = { 3, 0 }; 67 68 /* 69 * pmapper remote-call-service interface. 70 * This routine is used to call the pmapper remote call service 71 * which will look up a service program in the port maps, and then 72 * remotely call that routine with the given parameters. This allows 73 * programs to do a lookup and call in one step. 74 */ 75 enum clnt_stat 76 pmap_rmtcall(struct sockaddr_in *addr, u_long prog, u_long vers, u_long proc, 77 xdrproc_t xdrargs, caddr_t argsp, xdrproc_t xdrres, caddr_t resp, 78 struct timeval tout, u_long *port_ptr) 79 { 80 int sock = -1; 81 CLIENT *client; 82 struct rmtcallargs a; 83 struct rmtcallres r; 84 enum clnt_stat stat; 85 86 assert(addr != NULL); 87 assert(port_ptr != NULL); 88 89 addr->sin_port = htons(PMAPPORT); 90 client = clntudp_create(addr, PMAPPROG, PMAPVERS, timeout, &sock); 91 if (client != NULL) { 92 a.prog = prog; 93 a.vers = vers; 94 a.proc = proc; 95 a.args_ptr = argsp; 96 a.xdr_args = xdrargs; 97 r.port_ptr = port_ptr; 98 r.results_ptr = resp; 99 r.xdr_results = xdrres; 100 stat = CLNT_CALL(client, (rpcproc_t)PMAPPROC_CALLIT, 101 (xdrproc_t)xdr_rmtcall_args, &a, (xdrproc_t)xdr_rmtcallres, 102 &r, tout); 103 CLNT_DESTROY(client); 104 } else { 105 stat = RPC_FAILED; 106 } 107 addr->sin_port = 0; 108 return (stat); 109 } 110 111 112 /* 113 * XDR remote call arguments 114 * written for XDR_ENCODE direction only 115 */ 116 bool_t 117 xdr_rmtcall_args(XDR *xdrs, struct rmtcallargs *cap) 118 { 119 u_int lenposition, argposition, position; 120 121 assert(xdrs != NULL); 122 assert(cap != NULL); 123 124 if (xdr_u_long(xdrs, &(cap->prog)) && 125 xdr_u_long(xdrs, &(cap->vers)) && 126 xdr_u_long(xdrs, &(cap->proc))) { 127 lenposition = XDR_GETPOS(xdrs); 128 if (! xdr_u_long(xdrs, &(cap->arglen))) 129 return (FALSE); 130 argposition = XDR_GETPOS(xdrs); 131 if (! (*(cap->xdr_args))(xdrs, cap->args_ptr)) 132 return (FALSE); 133 position = XDR_GETPOS(xdrs); 134 cap->arglen = (u_long)position - (u_long)argposition; 135 XDR_SETPOS(xdrs, lenposition); 136 if (! xdr_u_long(xdrs, &(cap->arglen))) 137 return (FALSE); 138 XDR_SETPOS(xdrs, position); 139 return (TRUE); 140 } 141 return (FALSE); 142 } 143 144 /* 145 * XDR remote call results 146 * written for XDR_DECODE direction only 147 */ 148 bool_t 149 xdr_rmtcallres(XDR *xdrs, struct rmtcallres *crp) 150 { 151 caddr_t port_ptr; 152 153 assert(xdrs != NULL); 154 assert(crp != NULL); 155 156 port_ptr = (caddr_t)(void *)crp->port_ptr; 157 if (xdr_reference(xdrs, &port_ptr, sizeof (u_long), 158 (xdrproc_t)xdr_u_long) && xdr_u_long(xdrs, &crp->resultslen)) { 159 crp->port_ptr = (u_long *)(void *)port_ptr; 160 return ((*(crp->xdr_results))(xdrs, crp->results_ptr)); 161 } 162 return (FALSE); 163 } 164