clnt_raw.c

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