sunrpc/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 !defined(lint) && defined(SCCSIDS)
  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 #include <rpc/rpc.h>
  46 #include <rpc/svc.h>
  47 #include <rpc/xdr.h>
  48 #include <libintl.h>
  49
  50 #define MCALL_MSG_SIZE 24
  51
  52 /*
  53  * This is the "network" we will be moving stuff over.
  54  */
  55 struct clntraw_private_s
  56   {
  57     CLIENT client_object;
  58     XDR xdr_stream;
  59     char _raw_buf[UDPMSGSIZE];
  60     char mashl_callmsg[MCALL_MSG_SIZE];
  61     u_int mcnt;
  62   };
  63 #ifdef _RPC_THREAD_SAFE_
  64 #define clntraw_private ((struct clntraw_private_s *)RPC_THREAD_VARIABLE(clntraw_private_s))
  65 #else
  66 static struct clntraw_private_s *clntraw_private;
  67 #endif
  68
  69 static enum clnt_stat clntraw_call (CLIENT *, u_long, xdrproc_t, caddr_t,
  70                                     xdrproc_t, caddr_t, struct timeval);
  71 static void clntraw_abort (void);
  72 static void clntraw_geterr (CLIENT *, struct rpc_err *);
  73 static bool_t clntraw_freeres (CLIENT *, xdrproc_t, caddr_t);
  74 static bool_t clntraw_control (CLIENT *, int, char *);
  75 static void clntraw_destroy (CLIENT *);
  76
  77 static struct clnt_ops client_ops =
  78 {
  79   clntraw_call,
  80   clntraw_abort,
  81   clntraw_geterr,
  82   clntraw_freeres,
  83   clntraw_destroy,
  84   clntraw_control
  85 };
  86
  87 /*
  88  * Create a client handle for memory based rpc.
  89  */
  90 CLIENT *
  91 clntraw_create (u_long prog, u_long vers)
  92 {
  93   struct clntraw_private_s *clp = clntraw_private;
  94   struct rpc_msg call_msg;
  95   XDR *xdrs = &clp->xdr_stream;
  96   CLIENT *client = &clp->client_object;
  97
  98   if (clp == 0)
  99     {
 100       clp = (struct clntraw_private_s *) calloc (1, sizeof (*clp));
 101       if (clp == 0)
 102         return (0);
 103       clntraw_private = clp;
 104     }
 105   /*
 106    * pre-serialize the static part of the call msg and stash it away
 107    */
 108   call_msg.rm_direction = CALL;
 109   call_msg.rm_call.cb_rpcvers = RPC_MSG_VERSION;
 110   call_msg.rm_call.cb_prog = prog;
 111   call_msg.rm_call.cb_vers = vers;
 112   xdrmem_create (xdrs, clp->mashl_callmsg, MCALL_MSG_SIZE, XDR_ENCODE);
 113   if (!xdr_callhdr (xdrs, &call_msg))
 114     {
 115       perror (_ ("clnt_raw.c - Fatal header serialization error."));
 116     }
 117   clp->mcnt = XDR_GETPOS (xdrs);
 118   XDR_DESTROY (xdrs);
 119
 120   /*
 121    * Set xdrmem for client/server shared buffer
 122    */
 123   xdrmem_create (xdrs, clp->_raw_buf, UDPMSGSIZE, XDR_FREE);
 124
 125   /*
 126    * create client handle
 127    */
 128   client->cl_ops = &client_ops;
 129   client->cl_auth = authnone_create ();
 130   return client;
 131 }
 132
 133 static enum clnt_stat
 134 clntraw_call (h, proc, xargs, argsp, xresults, resultsp, timeout)
 135      CLIENT *h;
 136      u_long proc;
 137      xdrproc_t xargs;
 138      caddr_t argsp;
 139      xdrproc_t xresults;
 140      caddr_t resultsp;
 141      struct timeval timeout;
 142 {
 143   struct clntraw_private_s *clp = clntraw_private;
 144   XDR *xdrs = &clp->xdr_stream;
 145   struct rpc_msg msg;
 146   enum clnt_stat status;
 147   struct rpc_err error;
 148
 149   if (clp == NULL)
 150     return RPC_FAILED;
 151 call_again:
 152   /*
 153    * send request
 154    */
 155   xdrs->x_op = XDR_ENCODE;
 156   XDR_SETPOS (xdrs, 0);
 157   ((struct rpc_msg *) clp->mashl_callmsg)->rm_xid++;
 158   if ((!XDR_PUTBYTES (xdrs, clp->mashl_callmsg, clp->mcnt)) ||
 159       (!XDR_PUTLONG (xdrs, (long *) &proc)) ||
 160       (!AUTH_MARSHALL (h->cl_auth, xdrs)) ||
 161       (!(*xargs) (xdrs, argsp)))
 162     {
 163       return (RPC_CANTENCODEARGS);
 164     }
 165   (void) XDR_GETPOS (xdrs);     /* called just to cause overhead */
 166
 167   /*
 168    * We have to call server input routine here because this is
 169    * all going on in one process. Yuk.
 170    */
 171   svc_getreq (1);
 172
 173   /*
 174    * get results
 175    */
 176   xdrs->x_op = XDR_DECODE;
 177   XDR_SETPOS (xdrs, 0);
 178   msg.acpted_rply.ar_verf = _null_auth;
 179   msg.acpted_rply.ar_results.where = resultsp;
 180   msg.acpted_rply.ar_results.proc = xresults;
 181   if (!xdr_replymsg (xdrs, &msg))
 182     return RPC_CANTDECODERES;
 183   _seterr_reply (&msg, &error);
 184   status = error.re_status;
 185
 186   if (status == RPC_SUCCESS)
 187     {
 188       if (!AUTH_VALIDATE (h->cl_auth, &msg.acpted_rply.ar_verf))
 189         {
 190           status = RPC_AUTHERROR;
 191         }
 192     }                           /* end successful completion */
 193   else
 194     {
 195       if (AUTH_REFRESH (h->cl_auth))
 196         goto call_again;
 197     }                           /* end of unsuccessful completion */
 198
 199   if (status == RPC_SUCCESS)
 200     {
 201       if (!AUTH_VALIDATE (h->cl_auth, &msg.acpted_rply.ar_verf))
 202         {
 203           status = RPC_AUTHERROR;
 204         }
 205       if (msg.acpted_rply.ar_verf.oa_base != NULL)
 206         {
 207           xdrs->x_op = XDR_FREE;
 208           (void) xdr_opaque_auth (xdrs, &(msg.acpted_rply.ar_verf));
 209         }
 210     }
 211
 212   return status;
 213 }
 214
 215 static void
 216 clntraw_geterr (CLIENT *cl, struct rpc_err *err)
 217 {
 218 }
 219
 220
 221 static bool_t
 222 clntraw_freeres (cl, xdr_res, res_ptr)
 223      CLIENT *cl;
 224      xdrproc_t xdr_res;
 225      caddr_t res_ptr;
 226 {
 227   struct clntraw_private_s *clp = clntraw_private;
 228   XDR *xdrs = &clp->xdr_stream;
 229   bool_t rval;
 230
 231   if (clp == NULL)
 232     {
 233       rval = (bool_t) RPC_FAILED;
 234       return rval;
 235     }
 236   xdrs->x_op = XDR_FREE;
 237   return (*xdr_res) (xdrs, res_ptr);
 238 }
 239
 240 static void
 241 clntraw_abort (void)
 242 {
 243 }
 244
 245 static bool_t
 246 clntraw_control (CLIENT *cl, int i, char *c)
 247 {
 248   return FALSE;
 249 }
 250
 251 static void
 252 clntraw_destroy (CLIENT *cl)
 253 {
 254 }