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     union
  61     {
  62       char msg[MCALL_MSG_SIZE];
  63       u_long rm_xid;
  64     } mashl_callmsg;
  65     u_int mcnt;
  66   };
  67 #ifdef _RPC_THREAD_SAFE_
  68 #define clntraw_private RPC_THREAD_VARIABLE(clntraw_private_s)
  69 #else
  70 static struct clntraw_private_s *clntraw_private;
  71 #endif
  72
  73 static enum clnt_stat clntraw_call (CLIENT *, u_long, xdrproc_t, caddr_t,
  74                                     xdrproc_t, caddr_t, struct timeval);
  75 static void clntraw_abort (void);
  76 static void clntraw_geterr (CLIENT *, struct rpc_err *);
  77 static bool_t clntraw_freeres (CLIENT *, xdrproc_t, caddr_t);
  78 static bool_t clntraw_control (CLIENT *, int, char *);
  79 static void clntraw_destroy (CLIENT *);
  80
  81 static const struct clnt_ops client_ops =
  82 {
  83   clntraw_call,
  84   clntraw_abort,
  85   clntraw_geterr,
  86   clntraw_freeres,
  87   clntraw_destroy,
  88   clntraw_control
  89 };
  90
  91 /*
  92  * Create a client handle for memory based rpc.
  93  */
  94 CLIENT *
  95 clntraw_create (u_long prog, u_long vers)
  96 {
  97   struct clntraw_private_s *clp = clntraw_private;
  98   struct rpc_msg call_msg;
  99   XDR *xdrs;
 100   CLIENT *client;
 101
 102   if (clp == 0)
 103     {
 104       clp = (struct clntraw_private_s *) calloc (1, sizeof (*clp));
 105       if (clp == 0)
 106         return (0);
 107       clntraw_private = clp;
 108     }
 109   xdrs = &clp->xdr_stream;
 110   client = &clp->client_object;
 111   /*
 112    * pre-serialize the static part of the call msg and stash it away
 113    */
 114   call_msg.rm_direction = CALL;
 115   call_msg.rm_call.cb_rpcvers = RPC_MSG_VERSION;
 116   call_msg.rm_call.cb_prog = prog;
 117   call_msg.rm_call.cb_vers = vers;
 118   INTUSE(xdrmem_create) (xdrs, clp->mashl_callmsg.msg, MCALL_MSG_SIZE,
 119                          XDR_ENCODE);
 120   if (!INTUSE(xdr_callhdr) (xdrs, &call_msg))
 121     {
 122       perror (_ ("clnt_raw.c: fatal header serialization error"));
 123     }
 124   clp->mcnt = XDR_GETPOS (xdrs);
 125   XDR_DESTROY (xdrs);
 126
 127   /*
 128    * Set xdrmem for client/server shared buffer
 129    */
 130   INTUSE(xdrmem_create) (xdrs, clp->_raw_buf, UDPMSGSIZE, XDR_FREE);
 131
 132   /*
 133    * create client handle
 134    */
 135   client->cl_ops = (struct clnt_ops *) &client_ops;
 136   client->cl_auth = INTUSE(authnone_create) ();
 137   return client;
 138 }
 139
 140 static enum clnt_stat
 141 clntraw_call (h, proc, xargs, argsp, xresults, resultsp, timeout)
 142      CLIENT *h;
 143      u_long proc;
 144      xdrproc_t xargs;
 145      caddr_t argsp;
 146      xdrproc_t xresults;
 147      caddr_t resultsp;
 148      struct timeval timeout;
 149 {
 150   struct clntraw_private_s *clp = clntraw_private;
 151   XDR *xdrs = &clp->xdr_stream;
 152   struct rpc_msg msg;
 153   enum clnt_stat status;
 154   struct rpc_err error;
 155
 156   if (clp == NULL)
 157     return RPC_FAILED;
 158 call_again:
 159   /*
 160    * send request
 161    */
 162   xdrs->x_op = XDR_ENCODE;
 163   XDR_SETPOS (xdrs, 0);
 164   /* Just checking the union definition to access rm_xid is correct.  */
 165   if (offsetof (struct rpc_msg, rm_xid) != 0)
 166     abort ();
 167   clp->mashl_callmsg.rm_xid++;
 168   if ((!XDR_PUTBYTES (xdrs, clp->mashl_callmsg.msg, clp->mcnt)) ||
 169       (!XDR_PUTLONG (xdrs, (long *) &proc)) ||
 170       (!AUTH_MARSHALL (h->cl_auth, xdrs)) ||
 171       (!(*xargs) (xdrs, argsp)))
 172     {
 173       return (RPC_CANTENCODEARGS);
 174     }
 175   (void) XDR_GETPOS (xdrs);     /* called just to cause overhead */
 176
 177   /*
 178    * We have to call server input routine here because this is
 179    * all going on in one process. Yuk.
 180    */
 181   INTUSE(svc_getreq) (1);
 182
 183   /*
 184    * get results
 185    */
 186   xdrs->x_op = XDR_DECODE;
 187   XDR_SETPOS (xdrs, 0);
 188   msg.acpted_rply.ar_verf = _null_auth;
 189   msg.acpted_rply.ar_results.where = resultsp;
 190   msg.acpted_rply.ar_results.proc = xresults;
 191   if (!INTUSE(xdr_replymsg) (xdrs, &msg))
 192     return RPC_CANTDECODERES;
 193   _seterr_reply (&msg, &error);
 194   status = error.re_status;
 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     }                           /* end successful completion */
 203   else
 204     {
 205       if (AUTH_REFRESH (h->cl_auth))
 206         goto call_again;
 207     }                           /* end of unsuccessful completion */
 208
 209   if (status == RPC_SUCCESS)
 210     {
 211       if (!AUTH_VALIDATE (h->cl_auth, &msg.acpted_rply.ar_verf))
 212         {
 213           status = RPC_AUTHERROR;
 214         }
 215       if (msg.acpted_rply.ar_verf.oa_base != NULL)
 216         {
 217           xdrs->x_op = XDR_FREE;
 218           (void) INTUSE(xdr_opaque_auth) (xdrs, &(msg.acpted_rply.ar_verf));
 219         }
 220     }
 221
 222   return status;
 223 }
 224
 225 static void
 226 clntraw_geterr (CLIENT *cl, struct rpc_err *err)
 227 {
 228 }
 229
 230
 231 static bool_t
 232 clntraw_freeres (cl, xdr_res, res_ptr)
 233      CLIENT *cl;
 234      xdrproc_t xdr_res;
 235      caddr_t res_ptr;
 236 {
 237   struct clntraw_private_s *clp = clntraw_private;
 238   XDR *xdrs = &clp->xdr_stream;
 239   bool_t rval;
 240
 241   if (clp == NULL)
 242     {
 243       rval = (bool_t) RPC_FAILED;
 244       return rval;
 245     }
 246   xdrs->x_op = XDR_FREE;
 247   return (*xdr_res) (xdrs, res_ptr);
 248 }
 249
 250 static void
 251 clntraw_abort (void)
 252 {
 253 }
 254
 255 static bool_t
 256 clntraw_control (CLIENT *cl, int i, char *c)
 257 {
 258   return FALSE;
 259 }
 260
 261 static void
 262 clntraw_destroy (CLIENT *cl)
 263 {
 264 }