rpc.subproj/clnt_raw.c

   1 /*
   2  * Copyright (c) 1999 Apple Computer, Inc. All rights reserved.
   3  *
   4  * @APPLE_LICENSE_HEADER_START@
   5  *
   6  * Copyright (c) 1999-2003 Apple Computer, Inc.  All Rights Reserved.
   7  *
   8  * This file contains Original Code and/or Modifications of Original Code
   9  * as defined in and that are subject to the Apple Public Source License
  10  * Version 2.0 (the 'License'). You may not use this file except in
  11  * compliance with the License. Please obtain a copy of the License at
  12  * http://www.opensource.apple.com/apsl/ and read it before using this
  13  * file.
  14  *
  15  * The Original Code and all software distributed under the License are
  16  * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
  17  * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
  18  * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
  19  * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
  20  * Please see the License for the specific language governing rights and
  21  * limitations under the License.
  22  *
  23  * @APPLE_LICENSE_HEADER_END@
  24  */
  25 /*
  26  * Sun RPC is a product of Sun Microsystems, Inc. and is provided for
  27  * unrestricted use provided that this legend is included on all tape
  28  * media and as a part of the software program in whole or part.  Users
  29  * may copy or modify Sun RPC without charge, but are not authorized
  30  * to license or distribute it to anyone else except as part of a product or
  31  * program developed by the user.
  32  *
  33  * SUN RPC IS PROVIDED AS IS WITH NO WARRANTIES OF ANY KIND INCLUDING THE
  34  * WARRANTIES OF DESIGN, MERCHANTIBILITY AND FITNESS FOR A PARTICULAR
  35  * PURPOSE, OR ARISING FROM A COURSE OF DEALING, USAGE OR TRADE PRACTICE.
  36  *
  37  * Sun RPC is provided with no support and without any obligation on the
  38  * part of Sun Microsystems, Inc. to assist in its use, correction,
  39  * modification or enhancement.
  40  *
  41  * SUN MICROSYSTEMS, INC. SHALL HAVE NO LIABILITY WITH RESPECT TO THE
  42  * INFRINGEMENT OF COPYRIGHTS, TRADE SECRETS OR ANY PATENTS BY SUN RPC
  43  * OR ANY PART THEREOF.
  44  *
  45  * In no event will Sun Microsystems, Inc. be liable for any lost revenue
  46  * or profits or other special, indirect and consequential damages, even if
  47  * Sun has been advised of the possibility of such damages.
  48  *
  49  * Sun Microsystems, Inc.
  50  * 2550 Garcia Avenue
  51  * Mountain View, California  94043
  52  */
  53
  54 #if defined(LIBC_SCCS) && !defined(lint)
  55 /*static char *sccsid = "from: @(#)clnt_raw.c 1.22 87/08/11 Copyr 1984 Sun Micro";*/
  56 /*static char *sccsid = "from: @(#)clnt_raw.c   2.2 88/08/01 4.0 RPCSRC";*/
  57 static char *rcsid = "$Id: clnt_raw.c,v 1.3 2002/02/19 20:36:22 epeyton Exp $";
  58 #endif
  59
  60 /*
  61  * clnt_raw.c
  62  *
  63  * Copyright (C) 1984, Sun Microsystems, Inc.
  64  *
  65  * Memory based rpc for simple testing and timing.
  66  * Interface to create an rpc client and server in the same process.
  67  * This lets us similate rpc and get round trip overhead, without
  68  * any interference from the kernal.
  69  */
  70
  71 #include <stdio.h>
  72 #include <stdlib.h>
  73 #include <rpc/rpc.h>
  74
  75 extern bool_t   xdr_opaque_auth();
  76
  77 #define MCALL_MSG_SIZE 24
  78
  79 /*
  80  * This is the "network" we will be moving stuff over.
  81  */
  82 static struct clntraw_private {
  83         CLIENT  client_object;
  84         XDR     xdr_stream;
  85         char    _raw_buf[UDPMSGSIZE];
  86         char    mashl_callmsg[MCALL_MSG_SIZE];
  87         u_int   mcnt;
  88 } *clntraw_private;
  89
  90 static enum clnt_stat   clntraw_call();
  91 static void             clntraw_abort();
  92 static void             clntraw_geterr();
  93 static bool_t           clntraw_freeres();
  94 static bool_t           clntraw_control();
  95 static void             clntraw_destroy();
  96
  97 static struct clnt_ops client_ops = {
  98         clntraw_call,
  99         clntraw_abort,
 100         clntraw_geterr,
 101         clntraw_freeres,
 102         clntraw_destroy,
 103         clntraw_control
 104 };
 105
 106 void    svc_getreq();
 107
 108 /*
 109  * Create a client handle for memory based rpc.
 110  */
 111 CLIENT *
 112 clntraw_create(prog, vers)
 113         u_long prog;
 114         u_long vers;
 115 {
 116         register struct clntraw_private *clp = clntraw_private;
 117         struct rpc_msg call_msg;
 118         XDR *xdrs = &clp->xdr_stream;
 119         CLIENT  *client = &clp->client_object;
 120
 121         if (clp == 0) {
 122                 clp = (struct clntraw_private *)calloc(1, sizeof (*clp));
 123                 if (clp == 0)
 124                         return (0);
 125                 clntraw_private = clp;
 126         }
 127         /*
 128          * pre-serialize the staic part of the call msg and stash it away
 129          */
 130         call_msg.rm_direction = CALL;
 131         call_msg.rm_call.cb_rpcvers = RPC_MSG_VERSION;
 132         call_msg.rm_call.cb_prog = prog;
 133         call_msg.rm_call.cb_vers = vers;
 134         xdrmem_create(xdrs, clp->mashl_callmsg, MCALL_MSG_SIZE, XDR_ENCODE);
 135         if (! xdr_callhdr(xdrs, &call_msg)) {
 136                 perror("clnt_raw.c - Fatal header serialization error.");
 137         }
 138         clp->mcnt = XDR_GETPOS(xdrs);
 139         XDR_DESTROY(xdrs);
 140
 141         /*
 142          * Set xdrmem for client/server shared buffer
 143          */
 144         xdrmem_create(xdrs, clp->_raw_buf, UDPMSGSIZE, XDR_FREE);
 145
 146         /*
 147          * create client handle
 148          */
 149         client->cl_ops = &client_ops;
 150         client->cl_auth = authnone_create();
 151         return (client);
 152 }
 153
 154 static enum clnt_stat
 155 clntraw_call(h, proc, xargs, argsp, xresults, resultsp, timeout)
 156         CLIENT *h;
 157         u_long proc;
 158         xdrproc_t xargs;
 159         caddr_t argsp;
 160         xdrproc_t xresults;
 161         caddr_t resultsp;
 162         struct timeval timeout;
 163 {
 164         register struct clntraw_private *clp = clntraw_private;
 165         register XDR *xdrs = &clp->xdr_stream;
 166         struct rpc_msg msg;
 167         enum clnt_stat status;
 168         struct rpc_err error;
 169
 170         if (clp == 0)
 171                 return (RPC_FAILED);
 172 call_again:
 173         /*
 174          * send request
 175          */
 176         xdrs->x_op = XDR_ENCODE;
 177         XDR_SETPOS(xdrs, 0);
 178         ((struct rpc_msg *)clp->mashl_callmsg)->rm_xid ++ ;
 179         if ((! XDR_PUTBYTES(xdrs, clp->mashl_callmsg, clp->mcnt)) ||
 180             (! XDR_PUTLONG(xdrs, (long *)&proc)) ||
 181             (! AUTH_MARSHALL(h->cl_auth, xdrs)) ||
 182             (! (*xargs)(xdrs, argsp))) {
 183                 return (RPC_CANTENCODEARGS);
 184         }
 185         (void)XDR_GETPOS(xdrs);  /* called just to cause overhead */
 186
 187         /*
 188          * We have to call server input routine here because this is
 189          * all going on in one process. Yuk.
 190          */
 191         svc_getreq(1);
 192
 193         /*
 194          * get results
 195          */
 196         xdrs->x_op = XDR_DECODE;
 197         XDR_SETPOS(xdrs, 0);
 198         msg.acpted_rply.ar_verf = _null_auth;
 199         msg.acpted_rply.ar_results.where = resultsp;
 200         msg.acpted_rply.ar_results.proc = xresults;
 201         if (! xdr_replymsg(xdrs, &msg))
 202                 return (RPC_CANTDECODERES);
 203         _seterr_reply(&msg, &error);
 204         status = error.re_status;
 205
 206         if (status == RPC_SUCCESS) {
 207                 if (! AUTH_VALIDATE(h->cl_auth, &msg.acpted_rply.ar_verf)) {
 208                         status = RPC_AUTHERROR;
 209                 }
 210         }  /* end successful completion */
 211         else {
 212                 if (AUTH_REFRESH(h->cl_auth))
 213                         goto call_again;
 214         }  /* end of unsuccessful completion */
 215
 216         if (status == RPC_SUCCESS) {
 217                 if (! AUTH_VALIDATE(h->cl_auth, &msg.acpted_rply.ar_verf)) {
 218                         status = RPC_AUTHERROR;
 219                 }
 220                 if (msg.acpted_rply.ar_verf.oa_base != NULL) {
 221                         xdrs->x_op = XDR_FREE;
 222                         (void)xdr_opaque_auth(xdrs, &(msg.acpted_rply.ar_verf));
 223                 }
 224         }
 225
 226         return (status);
 227 }
 228
 229 static void
 230 clntraw_geterr()
 231 {
 232 }
 233
 234
 235 static bool_t
 236 clntraw_freeres(cl, xdr_res, res_ptr)
 237         CLIENT *cl;
 238         xdrproc_t xdr_res;
 239         caddr_t res_ptr;
 240 {
 241         register struct clntraw_private *clp = clntraw_private;
 242         register XDR *xdrs = &clp->xdr_stream;
 243         bool_t rval;
 244
 245         if (clp == 0)
 246         {
 247                 rval = (bool_t) RPC_FAILED;
 248                 return (rval);
 249         }
 250         xdrs->x_op = XDR_FREE;
 251         return ((*xdr_res)(xdrs, res_ptr));
 252 }
 253
 254 static void
 255 clntraw_abort()
 256 {
 257 }
 258
 259 static bool_t
 260 clntraw_control()
 261 {
 262         return (FALSE);
 263 }
 264
 265 static void
 266 clntraw_destroy()
 267 {
 268 }