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