rpc.subproj/clnt_raw.c

   1 /*
   2  * Copyright (c) 1999 Apple Computer, Inc. All rights reserved.
   3  *
   4  * @APPLE_LICENSE_HEADER_START@
   5  *
   6  * Portions Copyright (c) 1999 Apple Computer, Inc.  All Rights
   7  * Reserved.  This file contains Original Code and/or Modifications of
   8  * Original Code as defined in and that are subject to the Apple Public
   9  * Source License Version 1.1 (the "License").  You may not use this file
  10  * except in compliance with the License.  Please obtain a copy of the
  11  * License at http://www.apple.com/publicsource and read it before using
  12  * this file.
  13  *
  14  * The Original Code and all software distributed under the License are
  15  * distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY KIND, EITHER
  16  * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
  17  * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
  18  * FITNESS FOR A PARTICULAR PURPOSE OR NON- INFRINGEMENT.  Please see the
  19  * License for the specific language governing rights and limitations
  20  * under the License.
  21  *
  22  * @APPLE_LICENSE_HEADER_END@
  23  */
  24 /*
  25  * Sun RPC is a product of Sun Microsystems, Inc. and is provided for
  26  * unrestricted use provided that this legend is included on all tape
  27  * media and as a part of the software program in whole or part.  Users
  28  * may copy or modify Sun RPC without charge, but are not authorized
  29  * to license or distribute it to anyone else except as part of a product or
  30  * program developed by the user.
  31  *
  32  * SUN RPC IS PROVIDED AS IS WITH NO WARRANTIES OF ANY KIND INCLUDING THE
  33  * WARRANTIES OF DESIGN, MERCHANTIBILITY AND FITNESS FOR A PARTICULAR
  34  * PURPOSE, OR ARISING FROM A COURSE OF DEALING, USAGE OR TRADE PRACTICE.
  35  *
  36  * Sun RPC is provided with no support and without any obligation on the
  37  * part of Sun Microsystems, Inc. to assist in its use, correction,
  38  * modification or enhancement.
  39  *
  40  * SUN MICROSYSTEMS, INC. SHALL HAVE NO LIABILITY WITH RESPECT TO THE
  41  * INFRINGEMENT OF COPYRIGHTS, TRADE SECRETS OR ANY PATENTS BY SUN RPC
  42  * OR ANY PART THEREOF.
  43  *
  44  * In no event will Sun Microsystems, Inc. be liable for any lost revenue
  45  * or profits or other special, indirect and consequential damages, even if
  46  * Sun has been advised of the possibility of such damages.
  47  *
  48  * Sun Microsystems, Inc.
  49  * 2550 Garcia Avenue
  50  * Mountain View, California  94043
  51  */
  52
  53 #if defined(LIBC_SCCS) && !defined(lint)
  54 /*static char *sccsid = "from: @(#)clnt_raw.c 1.22 87/08/11 Copyr 1984 Sun Micro";*/
  55 /*static char *sccsid = "from: @(#)clnt_raw.c   2.2 88/08/01 4.0 RPCSRC";*/
  56 static char *rcsid = "$Id: clnt_raw.c,v 1.3 2002/02/19 20:36:22 epeyton Exp $";
  57 #endif
  58
  59 /*
  60  * clnt_raw.c
  61  *
  62  * Copyright (C) 1984, Sun Microsystems, Inc.
  63  *
  64  * Memory based rpc for simple testing and timing.
  65  * Interface to create an rpc client and server in the same process.
  66  * This lets us similate rpc and get round trip overhead, without
  67  * any interference from the kernal.
  68  */
  69
  70 #include <stdio.h>
  71 #include <stdlib.h>
  72 #include <rpc/rpc.h>
  73
  74 extern bool_t   xdr_opaque_auth();
  75
  76 #define MCALL_MSG_SIZE 24
  77
  78 /*
  79  * This is the "network" we will be moving stuff over.
  80  */
  81 static struct clntraw_private {
  82         CLIENT  client_object;
  83         XDR     xdr_stream;
  84         char    _raw_buf[UDPMSGSIZE];
  85         char    mashl_callmsg[MCALL_MSG_SIZE];
  86         u_int   mcnt;
  87 } *clntraw_private;
  88
  89 static enum clnt_stat   clntraw_call();
  90 static void             clntraw_abort();
  91 static void             clntraw_geterr();
  92 static bool_t           clntraw_freeres();
  93 static bool_t           clntraw_control();
  94 static void             clntraw_destroy();
  95
  96 static struct clnt_ops client_ops = {
  97         clntraw_call,
  98         clntraw_abort,
  99         clntraw_geterr,
 100         clntraw_freeres,
 101         clntraw_destroy,
 102         clntraw_control
 103 };
 104
 105 void    svc_getreq();
 106
 107 /*
 108  * Create a client handle for memory based rpc.
 109  */
 110 CLIENT *
 111 clntraw_create(prog, vers)
 112         u_long prog;
 113         u_long vers;
 114 {
 115         register struct clntraw_private *clp = clntraw_private;
 116         struct rpc_msg call_msg;
 117         XDR *xdrs = &clp->xdr_stream;
 118         CLIENT  *client = &clp->client_object;
 119
 120         if (clp == 0) {
 121                 clp = (struct clntraw_private *)calloc(1, sizeof (*clp));
 122                 if (clp == 0)
 123                         return (0);
 124                 clntraw_private = clp;
 125         }
 126         /*
 127          * pre-serialize the staic part of the call msg and stash it away
 128          */
 129         call_msg.rm_direction = CALL;
 130         call_msg.rm_call.cb_rpcvers = RPC_MSG_VERSION;
 131         call_msg.rm_call.cb_prog = prog;
 132         call_msg.rm_call.cb_vers = vers;
 133         xdrmem_create(xdrs, clp->mashl_callmsg, MCALL_MSG_SIZE, XDR_ENCODE);
 134         if (! xdr_callhdr(xdrs, &call_msg)) {
 135                 perror("clnt_raw.c - Fatal header serialization error.");
 136         }
 137         clp->mcnt = XDR_GETPOS(xdrs);
 138         XDR_DESTROY(xdrs);
 139
 140         /*
 141          * Set xdrmem for client/server shared buffer
 142          */
 143         xdrmem_create(xdrs, clp->_raw_buf, UDPMSGSIZE, XDR_FREE);
 144
 145         /*
 146          * create client handle
 147          */
 148         client->cl_ops = &client_ops;
 149         client->cl_auth = authnone_create();
 150         return (client);
 151 }
 152
 153 static enum clnt_stat
 154 clntraw_call(h, proc, xargs, argsp, xresults, resultsp, timeout)
 155         CLIENT *h;
 156         u_long proc;
 157         xdrproc_t xargs;
 158         caddr_t argsp;
 159         xdrproc_t xresults;
 160         caddr_t resultsp;
 161         struct timeval timeout;
 162 {
 163         register struct clntraw_private *clp = clntraw_private;
 164         register XDR *xdrs = &clp->xdr_stream;
 165         struct rpc_msg msg;
 166         enum clnt_stat status;
 167         struct rpc_err error;
 168
 169         if (clp == 0)
 170                 return (RPC_FAILED);
 171 call_again:
 172         /*
 173          * send request
 174          */
 175         xdrs->x_op = XDR_ENCODE;
 176         XDR_SETPOS(xdrs, 0);
 177         ((struct rpc_msg *)clp->mashl_callmsg)->rm_xid ++ ;
 178         if ((! XDR_PUTBYTES(xdrs, clp->mashl_callmsg, clp->mcnt)) ||
 179             (! XDR_PUTLONG(xdrs, (long *)&proc)) ||
 180             (! AUTH_MARSHALL(h->cl_auth, xdrs)) ||
 181             (! (*xargs)(xdrs, argsp))) {
 182                 return (RPC_CANTENCODEARGS);
 183         }
 184         (void)XDR_GETPOS(xdrs);  /* called just to cause overhead */
 185
 186         /*
 187          * We have to call server input routine here because this is
 188          * all going on in one process. Yuk.
 189          */
 190         svc_getreq(1);
 191
 192         /*
 193          * get results
 194          */
 195         xdrs->x_op = XDR_DECODE;
 196         XDR_SETPOS(xdrs, 0);
 197         msg.acpted_rply.ar_verf = _null_auth;
 198         msg.acpted_rply.ar_results.where = resultsp;
 199         msg.acpted_rply.ar_results.proc = xresults;
 200         if (! xdr_replymsg(xdrs, &msg))
 201                 return (RPC_CANTDECODERES);
 202         _seterr_reply(&msg, &error);
 203         status = error.re_status;
 204
 205         if (status == RPC_SUCCESS) {
 206                 if (! AUTH_VALIDATE(h->cl_auth, &msg.acpted_rply.ar_verf)) {
 207                         status = RPC_AUTHERROR;
 208                 }
 209         }  /* end successful completion */
 210         else {
 211                 if (AUTH_REFRESH(h->cl_auth))
 212                         goto call_again;
 213         }  /* end of unsuccessful completion */
 214
 215         if (status == RPC_SUCCESS) {
 216                 if (! AUTH_VALIDATE(h->cl_auth, &msg.acpted_rply.ar_verf)) {
 217                         status = RPC_AUTHERROR;
 218                 }
 219                 if (msg.acpted_rply.ar_verf.oa_base != NULL) {
 220                         xdrs->x_op = XDR_FREE;
 221                         (void)xdr_opaque_auth(xdrs, &(msg.acpted_rply.ar_verf));
 222                 }
 223         }
 224
 225         return (status);
 226 }
 227
 228 static void
 229 clntraw_geterr()
 230 {
 231 }
 232
 233
 234 static bool_t
 235 clntraw_freeres(cl, xdr_res, res_ptr)
 236         CLIENT *cl;
 237         xdrproc_t xdr_res;
 238         caddr_t res_ptr;
 239 {
 240         register struct clntraw_private *clp = clntraw_private;
 241         register XDR *xdrs = &clp->xdr_stream;
 242         bool_t rval;
 243
 244         if (clp == 0)
 245         {
 246                 rval = (bool_t) RPC_FAILED;
 247                 return (rval);
 248         }
 249         xdrs->x_op = XDR_FREE;
 250         return ((*xdr_res)(xdrs, res_ptr));
 251 }
 252
 253 static void
 254 clntraw_abort()
 255 {
 256 }
 257
 258 static bool_t
 259 clntraw_control()
 260 {
 261         return (FALSE);
 262 }
 263
 264 static void
 265 clntraw_destroy()
 266 {
 267 }