rpc.subproj/clnt_raw.c

   1 /*
   2  * Copyright (c) 1999-2018 Apple 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 "libinfo_common.h"
  71
  72 #include <stdio.h>
  73 #include <stdlib.h>
  74 #include <rpc/rpc.h>
  75
  76 extern bool_t   xdr_opaque_auth();
  77
  78 #define MCALL_MSG_SIZE 24
  79
  80 /*
  81  * This is the "network" we will be moving stuff over.
  82  */
  83 static struct clntraw_private {
  84         CLIENT  client_object;
  85         XDR     xdr_stream;
  86         char    _raw_buf[UDPMSGSIZE];
  87         char    mashl_callmsg[MCALL_MSG_SIZE];
  88         u_int   mcnt;
  89 } *clntraw_private;
  90
  91 static enum clnt_stat   clntraw_call();
  92 static void             clntraw_abort();
  93 static void             clntraw_geterr();
  94 static bool_t           clntraw_freeres();
  95 static bool_t           clntraw_control();
  96 static void             clntraw_destroy();
  97
  98 static struct clnt_ops client_ops = {
  99         clntraw_call,
 100         clntraw_abort,
 101         clntraw_geterr,
 102         clntraw_freeres,
 103         clntraw_destroy,
 104         clntraw_control
 105 };
 106
 107 void    svc_getreq();
 108
 109 /*
 110  * Create a client handle for memory based rpc.
 111  */
 112 LIBINFO_EXPORT
 113 CLIENT *
 114 clntraw_create(prog, vers)
 115 #ifdef __LP64__
 116         uint32_t prog;
 117         uint32_t vers;
 118 #else
 119         u_long prog;
 120         u_long vers;
 121 #endif
 122 {
 123         register struct clntraw_private *clp = clntraw_private;
 124         struct rpc_msg call_msg;
 125
 126         if (clp == 0) {
 127                 clp = (struct clntraw_private *)calloc(1, sizeof (*clp));
 128                 if (clp == 0)
 129                         return (0);
 130                 clntraw_private = clp;
 131         }
 132         XDR *xdrs = &clp->xdr_stream;
 133         CLIENT *client = &clp->client_object;
 134         /*
 135          * pre-serialize the staic part of the call msg and stash it away
 136          */
 137         call_msg.rm_direction = CALL;
 138         call_msg.rm_call.cb_rpcvers = RPC_MSG_VERSION;
 139         call_msg.rm_call.cb_prog = prog;
 140         call_msg.rm_call.cb_vers = vers;
 141         xdrmem_create(xdrs, clp->mashl_callmsg, MCALL_MSG_SIZE, XDR_ENCODE);
 142         if (! xdr_callhdr(xdrs, &call_msg)) {
 143                 perror("clnt_raw.c - Fatal header serialization error.");
 144         }
 145         clp->mcnt = XDR_GETPOS(xdrs);
 146         XDR_DESTROY(xdrs);
 147
 148         /*
 149          * Set xdrmem for client/server shared buffer
 150          */
 151         xdrmem_create(xdrs, clp->_raw_buf, UDPMSGSIZE, XDR_FREE);
 152
 153         /*
 154          * create client handle
 155          */
 156         client->cl_ops = &client_ops;
 157         client->cl_auth = authnone_create();
 158         return (client);
 159 }
 160
 161 static enum clnt_stat
 162 clntraw_call(h, proc, xargs, argsp, xresults, resultsp, timeout)
 163         CLIENT *h;
 164         rpc_uint proc;
 165         xdrproc_t xargs;
 166         caddr_t argsp;
 167         xdrproc_t xresults;
 168         caddr_t resultsp;
 169         struct timeval timeout;
 170 {
 171         register struct clntraw_private *clp = clntraw_private;
 172         register XDR *xdrs = &clp->xdr_stream;
 173         struct rpc_msg msg;
 174         enum clnt_stat status;
 175         struct rpc_err error;
 176
 177         if (clp == 0)
 178                 return (RPC_FAILED);
 179 call_again:
 180         /*
 181          * send request
 182          */
 183         xdrs->x_op = XDR_ENCODE;
 184         XDR_SETPOS(xdrs, 0);
 185         ((struct rpc_msg *)clp->mashl_callmsg)->rm_xid ++ ;
 186 #ifdef __LP64__
 187         if ((! XDR_PUTBYTES(xdrs, clp->mashl_callmsg, clp->mcnt)) ||
 188             (! XDR_PUTLONG(xdrs, (int *)&proc)) ||
 189             (! AUTH_MARSHALL(h->cl_auth, xdrs)) ||
 190             (! (*xargs)(xdrs, argsp, 0))) return (RPC_CANTENCODEARGS);
 191 #else
 192         if ((! XDR_PUTBYTES(xdrs, clp->mashl_callmsg, clp->mcnt)) ||
 193                 (! XDR_PUTLONG(xdrs, (long *)&proc)) ||
 194                 (! AUTH_MARSHALL(h->cl_auth, xdrs)) ||
 195                 (! (*xargs)(xdrs, argsp, 0))) return (RPC_CANTENCODEARGS);
 196 #endif
 197         (void)XDR_GETPOS(xdrs);  /* called just to cause overhead */
 198
 199         /*
 200          * We have to call server input routine here because this is
 201          * all going on in one process. Yuk.
 202          */
 203         svc_getreq(1);
 204
 205         /*
 206          * get results
 207          */
 208         xdrs->x_op = XDR_DECODE;
 209         XDR_SETPOS(xdrs, 0);
 210         msg.acpted_rply.ar_verf = _null_auth;
 211         msg.acpted_rply.ar_results.where = resultsp;
 212         msg.acpted_rply.ar_results.proc = xresults;
 213         if (! xdr_replymsg(xdrs, &msg))
 214                 return (RPC_CANTDECODERES);
 215         _seterr_reply(&msg, &error);
 216         status = error.re_status;
 217
 218         if (status == RPC_SUCCESS) {
 219                 if (! AUTH_VALIDATE(h->cl_auth, &msg.acpted_rply.ar_verf)) {
 220                         status = RPC_AUTHERROR;
 221                 }
 222         }  /* end successful completion */
 223         else {
 224                 if (AUTH_REFRESH(h->cl_auth))
 225                         goto call_again;
 226         }  /* end of unsuccessful completion */
 227
 228         if (status == RPC_SUCCESS) {
 229                 if (! AUTH_VALIDATE(h->cl_auth, &msg.acpted_rply.ar_verf)) {
 230                         status = RPC_AUTHERROR;
 231                 }
 232                 if (msg.acpted_rply.ar_verf.oa_base != NULL) {
 233                         xdrs->x_op = XDR_FREE;
 234                         (void)xdr_opaque_auth(xdrs, &(msg.acpted_rply.ar_verf));
 235                 }
 236         }
 237
 238         return (status);
 239 }
 240
 241 static void
 242 clntraw_geterr()
 243 {
 244 }
 245
 246
 247 static bool_t
 248 clntraw_freeres(cl, xdr_res, res_ptr)
 249         CLIENT *cl;
 250         xdrproc_t xdr_res;
 251         caddr_t res_ptr;
 252 {
 253         register struct clntraw_private *clp = clntraw_private;
 254         register XDR *xdrs = &clp->xdr_stream;
 255         bool_t rval;
 256
 257         if (clp == 0)
 258         {
 259                 rval = (bool_t) RPC_FAILED;
 260                 return (rval);
 261         }
 262         xdrs->x_op = XDR_FREE;
 263         return ((*xdr_res)(xdrs, res_ptr, 0));
 264 }
 265
 266 static void
 267 clntraw_abort()
 268 {
 269 }
 270
 271 static bool_t
 272 clntraw_control()
 273 {
 274         return (FALSE);
 275 }
 276
 277 static void
 278 clntraw_destroy()
 279 {
 280 }