1 /* 2 * Sun RPC is a product of Sun Microsystems, Inc. and is provided for 3 * unrestricted use provided that this legend is included on all tape 4 * media and as a part of the software program in whole or part. Users 5 * may copy or modify Sun RPC without charge, but are not authorized 6 * to license or distribute it to anyone else except as part of a product or 7 * program developed by the user. 8 * 9 * SUN RPC IS PROVIDED AS IS WITH NO WARRANTIES OF ANY KIND INCLUDING THE 10 * WARRANTIES OF DESIGN, MERCHANTIBILITY AND FITNESS FOR A PARTICULAR 11 * PURPOSE, OR ARISING FROM A COURSE OF DEALING, USAGE OR TRADE PRACTICE. 12 * 13 * Sun RPC is provided with no support and without any obligation on the 14 * part of Sun Microsystems, Inc. to assist in its use, correction, 15 * modification or enhancement. 16 * 17 * SUN MICROSYSTEMS, INC. SHALL HAVE NO LIABILITY WITH RESPECT TO THE 18 * INFRINGEMENT OF COPYRIGHTS, TRADE SECRETS OR ANY PATENTS BY SUN RPC 19 * OR ANY PART THEREOF. 20 * 21 * In no event will Sun Microsystems, Inc. be liable for any lost revenue 22 * or profits or other special, indirect and consequential damages, even if 23 * Sun has been advised of the possibility of such damages. 24 * 25 * Sun Microsystems, Inc. 26 * 2550 Garcia Avenue 27 * Mountain View, California 94043 28 * 29 * @(#)pmap_rmt.c 1.21 87/08/27 Copyr 1984 Sun Micro 30 * @(#)pmap_rmt.c 2.2 88/08/01 4.0 RPCSRC 31 * $NetBSD: pmap_rmt.c,v 1.29 2000/07/06 03:10:34 christos Exp $ 32 * $FreeBSD: src/lib/libc/rpc/pmap_rmt.c,v 1.20 2004/10/16 06:11:35 obrien Exp $ 33 * $DragonFly: src/lib/libc/rpc/pmap_rmt.c,v 1.5 2005/11/13 12:27:04 swildner Exp $ 34 */ 35 36 /* 37 * pmap_rmt.c 38 * Client interface to pmap rpc service. 39 * remote call and broadcast service 40 * 41 * Copyright (C) 1984, Sun Microsystems, Inc. 42 */ 43 44 #include "namespace.h" 45 #include <sys/types.h> 46 #include <sys/ioctl.h> 47 #include <sys/poll.h> 48 #include <sys/socket.h> 49 50 #include <net/if.h> 51 #include <netinet/in.h> 52 #include <arpa/inet.h> 53 54 #include <assert.h> 55 #include <err.h> 56 #include <errno.h> 57 #include <stdio.h> 58 #include <string.h> 59 #include <unistd.h> 60 61 #include <rpc/rpc.h> 62 #include <rpc/pmap_prot.h> 63 #include <rpc/pmap_clnt.h> 64 #include <rpc/pmap_rmt.h> 65 #include "un-namespace.h" 66 67 static const struct timeval timeout = { 3, 0 }; 68 69 /* 70 * pmapper remote-call-service interface. 71 * This routine is used to call the pmapper remote call service 72 * which will look up a service program in the port maps, and then 73 * remotely call that routine with the given parameters. This allows 74 * programs to do a lookup and call in one step. 75 */ 76 enum clnt_stat 77 pmap_rmtcall(struct sockaddr_in *addr, u_long prog, u_long vers, u_long proc, 78 xdrproc_t xdrargs, caddr_t argsp, xdrproc_t xdrres, caddr_t resp, 79 struct timeval tout, u_long *port_ptr) 80 { 81 int sock = -1; 82 CLIENT *client; 83 struct rmtcallargs a; 84 struct rmtcallres r; 85 enum clnt_stat stat; 86 87 assert(addr != NULL); 88 assert(port_ptr != NULL); 89 90 addr->sin_port = htons(PMAPPORT); 91 client = clntudp_create(addr, PMAPPROG, PMAPVERS, timeout, &sock); 92 if (client != NULL) { 93 a.prog = prog; 94 a.vers = vers; 95 a.proc = proc; 96 a.args_ptr = argsp; 97 a.xdr_args = xdrargs; 98 r.port_ptr = port_ptr; 99 r.results_ptr = resp; 100 r.xdr_results = xdrres; 101 stat = CLNT_CALL(client, (rpcproc_t)PMAPPROC_CALLIT, 102 (xdrproc_t)xdr_rmtcall_args, &a, (xdrproc_t)xdr_rmtcallres, 103 &r, tout); 104 CLNT_DESTROY(client); 105 } else { 106 stat = RPC_FAILED; 107 } 108 addr->sin_port = 0; 109 return (stat); 110 } 111 112 113 /* 114 * XDR remote call arguments 115 * written for XDR_ENCODE direction only 116 */ 117 bool_t 118 xdr_rmtcall_args(XDR *xdrs, struct rmtcallargs *cap) 119 { 120 u_int lenposition, argposition, position; 121 122 assert(xdrs != NULL); 123 assert(cap != NULL); 124 125 if (xdr_u_long(xdrs, &(cap->prog)) && 126 xdr_u_long(xdrs, &(cap->vers)) && 127 xdr_u_long(xdrs, &(cap->proc))) { 128 lenposition = XDR_GETPOS(xdrs); 129 if (! xdr_u_long(xdrs, &(cap->arglen))) 130 return (FALSE); 131 argposition = XDR_GETPOS(xdrs); 132 if (! (*(cap->xdr_args))(xdrs, cap->args_ptr)) 133 return (FALSE); 134 position = XDR_GETPOS(xdrs); 135 cap->arglen = (u_long)position - (u_long)argposition; 136 XDR_SETPOS(xdrs, lenposition); 137 if (! xdr_u_long(xdrs, &(cap->arglen))) 138 return (FALSE); 139 XDR_SETPOS(xdrs, position); 140 return (TRUE); 141 } 142 return (FALSE); 143 } 144 145 /* 146 * XDR remote call results 147 * written for XDR_DECODE direction only 148 */ 149 bool_t 150 xdr_rmtcallres(XDR *xdrs, struct rmtcallres *crp) 151 { 152 caddr_t port_ptr; 153 154 assert(xdrs != NULL); 155 assert(crp != NULL); 156 157 port_ptr = (caddr_t)(void *)crp->port_ptr; 158 if (xdr_reference(xdrs, &port_ptr, sizeof (u_long), 159 (xdrproc_t)xdr_u_long) && xdr_u_long(xdrs, &crp->resultslen)) { 160 crp->port_ptr = (u_long *)(void *)port_ptr; 161 return ((*(crp->xdr_results))(xdrs, crp->results_ptr)); 162 } 163 return (FALSE); 164 } 165