1 /* $NetBSD: pmap_rmt.c,v 1.29 2000/07/06 03:10:34 christos Exp $ */ 2 3 /*- 4 * Copyright (c) 2009, Sun Microsystems, Inc. 5 * All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions are met: 9 * - Redistributions of source code must retain the above copyright notice, 10 * this list of conditions and the following disclaimer. 11 * - Redistributions in binary form must reproduce the above copyright notice, 12 * this list of conditions and the following disclaimer in the documentation 13 * and/or other materials provided with the distribution. 14 * - Neither the name of Sun Microsystems, Inc. nor the names of its 15 * contributors may be used to endorse or promote products derived 16 * from this software without specific prior written permission. 17 * 18 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" 19 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 20 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 21 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE 22 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 23 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 24 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 25 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 26 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 27 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 28 * POSSIBILITY OF SUCH DAMAGE. 29 */ 30 31 #if defined(LIBC_SCCS) && !defined(lint) 32 static char *sccsid2 = "@(#)pmap_rmt.c 1.21 87/08/27 Copyr 1984 Sun Micro"; 33 static char *sccsid = "@(#)pmap_rmt.c 2.2 88/08/01 4.0 RPCSRC"; 34 #endif 35 #include <sys/cdefs.h> 36 __FBSDID("$FreeBSD$"); 37 38 /* 39 * pmap_rmt.c 40 * Client interface to pmap rpc service. 41 * remote call and broadcast service 42 * 43 * Copyright (C) 1984, Sun Microsystems, Inc. 44 */ 45 46 #include "namespace.h" 47 #include <sys/types.h> 48 #include <sys/ioctl.h> 49 #include <sys/poll.h> 50 #include <sys/socket.h> 51 52 #include <net/if.h> 53 #include <netinet/in.h> 54 #include <arpa/inet.h> 55 56 #include <assert.h> 57 #include <err.h> 58 #include <errno.h> 59 #include <stdio.h> 60 #include <string.h> 61 #include <unistd.h> 62 63 #include <rpc/rpc.h> 64 #include <rpc/pmap_prot.h> 65 #include <rpc/pmap_clnt.h> 66 #include <rpc/pmap_rmt.h> 67 #include "un-namespace.h" 68 69 static const struct timeval timeout = { 3, 0 }; 70 71 /* 72 * pmapper remote-call-service interface. 73 * This routine is used to call the pmapper remote call service 74 * which will look up a service program in the port maps, and then 75 * remotely call that routine with the given parameters. This allows 76 * programs to do a lookup and call in one step. 77 */ 78 enum clnt_stat 79 pmap_rmtcall(addr, prog, vers, proc, xdrargs, argsp, xdrres, resp, tout, 80 port_ptr) 81 struct sockaddr_in *addr; 82 u_long prog, vers, proc; 83 xdrproc_t xdrargs, xdrres; 84 caddr_t argsp, resp; 85 struct timeval tout; 86 u_long *port_ptr; 87 { 88 int sock = -1; 89 CLIENT *client; 90 struct rmtcallargs a; 91 struct rmtcallres r; 92 enum clnt_stat stat; 93 94 assert(addr != NULL); 95 assert(port_ptr != NULL); 96 97 addr->sin_port = htons(PMAPPORT); 98 client = clntudp_create(addr, PMAPPROG, PMAPVERS, timeout, &sock); 99 if (client != NULL) { 100 a.prog = prog; 101 a.vers = vers; 102 a.proc = proc; 103 a.args_ptr = argsp; 104 a.xdr_args = xdrargs; 105 r.port_ptr = port_ptr; 106 r.results_ptr = resp; 107 r.xdr_results = xdrres; 108 stat = CLNT_CALL(client, (rpcproc_t)PMAPPROC_CALLIT, 109 (xdrproc_t)xdr_rmtcall_args, &a, (xdrproc_t)xdr_rmtcallres, 110 &r, tout); 111 CLNT_DESTROY(client); 112 } else { 113 stat = RPC_FAILED; 114 } 115 addr->sin_port = 0; 116 return (stat); 117 } 118 119 120 /* 121 * XDR remote call arguments 122 * written for XDR_ENCODE direction only 123 */ 124 bool_t 125 xdr_rmtcall_args(xdrs, cap) 126 XDR *xdrs; 127 struct rmtcallargs *cap; 128 { 129 u_int lenposition, argposition, position; 130 131 assert(xdrs != NULL); 132 assert(cap != NULL); 133 134 if (xdr_u_long(xdrs, &(cap->prog)) && 135 xdr_u_long(xdrs, &(cap->vers)) && 136 xdr_u_long(xdrs, &(cap->proc))) { 137 lenposition = XDR_GETPOS(xdrs); 138 if (! xdr_u_long(xdrs, &(cap->arglen))) 139 return (FALSE); 140 argposition = XDR_GETPOS(xdrs); 141 if (! (*(cap->xdr_args))(xdrs, cap->args_ptr)) 142 return (FALSE); 143 position = XDR_GETPOS(xdrs); 144 cap->arglen = (u_long)position - (u_long)argposition; 145 XDR_SETPOS(xdrs, lenposition); 146 if (! xdr_u_long(xdrs, &(cap->arglen))) 147 return (FALSE); 148 XDR_SETPOS(xdrs, position); 149 return (TRUE); 150 } 151 return (FALSE); 152 } 153 154 /* 155 * XDR remote call results 156 * written for XDR_DECODE direction only 157 */ 158 bool_t 159 xdr_rmtcallres(xdrs, crp) 160 XDR *xdrs; 161 struct rmtcallres *crp; 162 { 163 caddr_t port_ptr; 164 165 assert(xdrs != NULL); 166 assert(crp != NULL); 167 168 port_ptr = (caddr_t)(void *)crp->port_ptr; 169 if (xdr_reference(xdrs, &port_ptr, sizeof (u_long), 170 (xdrproc_t)xdr_u_long) && xdr_u_long(xdrs, &crp->resultslen)) { 171 crp->port_ptr = (u_long *)(void *)port_ptr; 172 return ((*(crp->xdr_results))(xdrs, crp->results_ptr)); 173 } 174 return (FALSE); 175 } 176