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