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 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 const 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;
  96   CLIENT *client;
  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   xdrs = &clp->xdr_stream;
 106   client = &clp->client_object;
 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   INTUSE(xdrmem_create) (xdrs, clp->mashl_callmsg, MCALL_MSG_SIZE, XDR_ENCODE);
 115   if (!INTUSE(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   INTUSE(xdrmem_create) (xdrs, clp->_raw_buf, UDPMSGSIZE, XDR_FREE);
 126
 127   /*
 128    * create client handle
 129    */
 130   client->cl_ops = (struct clnt_ops *) &client_ops;
 131   client->cl_auth = INTUSE(authnone_create) ();
 132   return client;
 133 }
 134
 135 static enum clnt_stat
 136 clntraw_call (h, proc, xargs, argsp, xresults, resultsp, timeout)
 137      CLIENT *h;
 138      u_long proc;
 139      xdrproc_t xargs;
 140      caddr_t argsp;
 141      xdrproc_t xresults;
 142      caddr_t resultsp;
 143      struct timeval timeout;
 144 {
 145   struct clntraw_private_s *clp = clntraw_private;
 146   XDR *xdrs = &clp->xdr_stream;
 147   struct rpc_msg msg;
 148   enum clnt_stat status;
 149   struct rpc_err error;
 150
 151   if (clp == NULL)
 152     return RPC_FAILED;
 153 call_again:
 154   /*
 155    * send request
 156    */
 157   xdrs->x_op = XDR_ENCODE;
 158   XDR_SETPOS (xdrs, 0);
 159   ((struct rpc_msg *) clp->mashl_callmsg)->rm_xid++;
 160   if ((!XDR_PUTBYTES (xdrs, clp->mashl_callmsg, clp->mcnt)) ||
 161       (!XDR_PUTLONG (xdrs, (long *) &proc)) ||
 162       (!AUTH_MARSHALL (h->cl_auth, xdrs)) ||
 163       (!(*xargs) (xdrs, argsp)))
 164     {
 165       return (RPC_CANTENCODEARGS);
 166     }
 167   (void) XDR_GETPOS (xdrs);     /* called just to cause overhead */
 168
 169   /*
 170    * We have to call server input routine here because this is
 171    * all going on in one process. Yuk.
 172    */
 173   INTUSE(svc_getreq) (1);
 174
 175   /*
 176    * get results
 177    */
 178   xdrs->x_op = XDR_DECODE;
 179   XDR_SETPOS (xdrs, 0);
 180   msg.acpted_rply.ar_verf = _null_auth;
 181   msg.acpted_rply.ar_results.where = resultsp;
 182   msg.acpted_rply.ar_results.proc = xresults;
 183   if (!INTUSE(xdr_replymsg) (xdrs, &msg))
 184     return RPC_CANTDECODERES;
 185   _seterr_reply (&msg, &error);
 186   status = error.re_status;
 187
 188   if (status == RPC_SUCCESS)
 189     {
 190       if (!AUTH_VALIDATE (h->cl_auth, &msg.acpted_rply.ar_verf))
 191         {
 192           status = RPC_AUTHERROR;
 193         }
 194     }                           /* end successful completion */
 195   else
 196     {
 197       if (AUTH_REFRESH (h->cl_auth))
 198         goto call_again;
 199     }                           /* end of unsuccessful completion */
 200
 201   if (status == RPC_SUCCESS)
 202     {
 203       if (!AUTH_VALIDATE (h->cl_auth, &msg.acpted_rply.ar_verf))
 204         {
 205           status = RPC_AUTHERROR;
 206         }
 207       if (msg.acpted_rply.ar_verf.oa_base != NULL)
 208         {
 209           xdrs->x_op = XDR_FREE;
 210           (void) INTUSE(xdr_opaque_auth) (xdrs, &(msg.acpted_rply.ar_verf));
 211         }
 212     }
 213
 214   return status;
 215 }
 216
 217 static void
 218 clntraw_geterr (CLIENT *cl, struct rpc_err *err)
 219 {
 220 }
 221
 222
 223 static bool_t
 224 clntraw_freeres (cl, xdr_res, res_ptr)
 225      CLIENT *cl;
 226      xdrproc_t xdr_res;
 227      caddr_t res_ptr;
 228 {
 229   struct clntraw_private_s *clp = clntraw_private;
 230   XDR *xdrs = &clp->xdr_stream;
 231   bool_t rval;
 232
 233   if (clp == NULL)
 234     {
 235       rval = (bool_t) RPC_FAILED;
 236       return rval;
 237     }
 238   xdrs->x_op = XDR_FREE;
 239   return (*xdr_res) (xdrs, res_ptr);
 240 }
 241
 242 static void
 243 clntraw_abort (void)
 244 {
 245 }
 246
 247 static bool_t
 248 clntraw_control (CLIENT *cl, int i, char *c)
 249 {
 250   return FALSE;
 251 }
 252
 253 static void
 254 clntraw_destroy (CLIENT *cl)
 255 {
 256 }