/* $NetBSD: clnt_raw.c,v 1.24 2003/01/18 11:29:04 thorpej Exp $ */ /* * Sun RPC is a product of Sun Microsystems, Inc. and is provided for * unrestricted use provided that this legend is included on all tape * media and as a part of the software program in whole or part. Users * may copy or modify Sun RPC without charge, but are not authorized * to license or distribute it to anyone else except as part of a product or * program developed by the user. * * SUN RPC IS PROVIDED AS IS WITH NO WARRANTIES OF ANY KIND INCLUDING THE * WARRANTIES OF DESIGN, MERCHANTIBILITY AND FITNESS FOR A PARTICULAR * PURPOSE, OR ARISING FROM A COURSE OF DEALING, USAGE OR TRADE PRACTICE. * * Sun RPC is provided with no support and without any obligation on the * part of Sun Microsystems, Inc. to assist in its use, correction, * modification or enhancement. * * SUN MICROSYSTEMS, INC. SHALL HAVE NO LIABILITY WITH RESPECT TO THE * INFRINGEMENT OF COPYRIGHTS, TRADE SECRETS OR ANY PATENTS BY SUN RPC * OR ANY PART THEREOF. * * In no event will Sun Microsystems, Inc. be liable for any lost revenue * or profits or other special, indirect and consequential damages, even if * Sun has been advised of the possibility of such damages. * * Sun Microsystems, Inc. * 2550 Garcia Avenue * Mountain View, California 94043 */ #include #if defined(LIBC_SCCS) && !defined(lint) #if 0 static char *sccsid = "@(#)clnt_raw.c 1.22 87/08/11 Copyr 1984 Sun Micro"; static char *sccsid = "@(#)clnt_raw.c 2.2 88/08/01 4.0 RPCSRC"; #else __RCSID("$NetBSD: clnt_raw.c,v 1.24 2003/01/18 11:29:04 thorpej Exp $"); #endif #endif /* * clnt_raw.c * * Copyright (C) 1984, Sun Microsystems, Inc. * * Memory based rpc for simple testing and timing. * Interface to create an rpc client and server in the same process. * This lets us similate rpc and get round trip overhead, without * any interference from the kernal. */ #include "namespace.h" #include "reentrant.h" #include #include #include #include #include #include #ifdef __weak_alias __weak_alias(clntraw_create,_clntraw_create) __weak_alias(clnt_raw_create,_clnt_raw_create) #endif #ifdef _REENTRANT extern mutex_t clntraw_lock; #endif #define MCALL_MSG_SIZE 24 /* * This is the "network" we will be moving stuff over. */ static struct clntraw_private { CLIENT client_object; XDR xdr_stream; char *_raw_buf; union { struct rpc_msg mashl_rpcmsg; char mashl_callmsg[MCALL_MSG_SIZE]; } u; u_int mcnt; } *clntraw_private; static enum clnt_stat clnt_raw_call __P((CLIENT *, rpcproc_t, xdrproc_t, caddr_t, xdrproc_t, caddr_t, struct timeval)); static void clnt_raw_geterr __P((CLIENT *, struct rpc_err *)); static bool_t clnt_raw_freeres __P((CLIENT *, xdrproc_t, caddr_t)); static void clnt_raw_abort __P((CLIENT *)); static bool_t clnt_raw_control __P((CLIENT *, u_int, char *)); static void clnt_raw_destroy __P((CLIENT *)); static struct clnt_ops *clnt_raw_ops __P((void)); /* * Create a client handle for memory based rpc. */ CLIENT * clnt_raw_create(prog, vers) rpcprog_t prog; rpcvers_t vers; { struct clntraw_private *clp = clntraw_private; struct rpc_msg call_msg; XDR *xdrs = &clp->xdr_stream; CLIENT *client = &clp->client_object; mutex_lock(&clntraw_lock); if (clp == NULL) { clp = (struct clntraw_private *)calloc(1, sizeof (*clp)); if (clp == NULL) { mutex_unlock(&clntraw_lock); return NULL; } if (__rpc_rawcombuf == NULL) __rpc_rawcombuf = (char *)calloc(UDPMSGSIZE, sizeof (char)); clp->_raw_buf = __rpc_rawcombuf; clntraw_private = clp; } /* * pre-serialize the static part of the call msg and stash it away */ call_msg.rm_direction = CALL; call_msg.rm_call.cb_rpcvers = RPC_MSG_VERSION; /* XXX: prog and vers have been long historically :-( */ call_msg.rm_call.cb_prog = (u_int32_t)prog; call_msg.rm_call.cb_vers = (u_int32_t)vers; xdrmem_create(xdrs, clp->u.mashl_callmsg, MCALL_MSG_SIZE, XDR_ENCODE); if (! xdr_callhdr(xdrs, &call_msg)) warnx("clntraw_create - Fatal header serialization error."); clp->mcnt = XDR_GETPOS(xdrs); XDR_DESTROY(xdrs); /* * Set xdrmem for client/server shared buffer */ xdrmem_create(xdrs, clp->_raw_buf, UDPMSGSIZE, XDR_FREE); /* * create client handle */ client->cl_ops = clnt_raw_ops(); client->cl_auth = authnone_create(); mutex_unlock(&clntraw_lock); return (client); } /* ARGSUSED */ static enum clnt_stat clnt_raw_call(h, proc, xargs, argsp, xresults, resultsp, timeout) CLIENT *h; rpcproc_t proc; xdrproc_t xargs; caddr_t argsp; xdrproc_t xresults; caddr_t resultsp; struct timeval timeout; { struct clntraw_private *clp = clntraw_private; XDR *xdrs = &clp->xdr_stream; struct rpc_msg msg; enum clnt_stat status; struct rpc_err error; _DIAGASSERT(h != NULL); mutex_lock(&clntraw_lock); if (clp == NULL) { mutex_unlock(&clntraw_lock); return (RPC_FAILED); } mutex_unlock(&clntraw_lock); call_again: /* * send request */ xdrs->x_op = XDR_ENCODE; XDR_SETPOS(xdrs, 0); clp->u.mashl_rpcmsg.rm_xid ++ ; if ((! XDR_PUTBYTES(xdrs, clp->u.mashl_callmsg, clp->mcnt)) || (! XDR_PUTINT32(xdrs, (int32_t *)&proc)) || (! AUTH_MARSHALL(h->cl_auth, xdrs)) || (! (*xargs)(xdrs, argsp))) { return (RPC_CANTENCODEARGS); } (void)XDR_GETPOS(xdrs); /* called just to cause overhead */ /* * We have to call server input routine here because this is * all going on in one process. Yuk. */ svc_getreq_common(FD_SETSIZE); /* * get results */ xdrs->x_op = XDR_DECODE; XDR_SETPOS(xdrs, 0); msg.acpted_rply.ar_verf = _null_auth; msg.acpted_rply.ar_results.where = resultsp; msg.acpted_rply.ar_results.proc = xresults; if (! xdr_replymsg(xdrs, &msg)) { /* * It's possible for xdr_replymsg() to fail partway * through its attempt to decode the result from the * server. If this happens, it will leave the reply * structure partially populated with dynamically * allocated memory. (This can happen if someone uses * clntudp_bufcreate() to create a CLIENT handle and * specifies a receive buffer size that is too small.) * This memory must be free()ed to avoid a leak. */ int op = xdrs->x_op; xdrs->x_op = XDR_FREE; xdr_replymsg(xdrs, &msg); xdrs->x_op = op; return (RPC_CANTDECODERES); } _seterr_reply(&msg, &error); status = error.re_status; if (status == RPC_SUCCESS) { if (! AUTH_VALIDATE(h->cl_auth, &msg.acpted_rply.ar_verf)) { status = RPC_AUTHERROR; } } /* end successful completion */ else { if (AUTH_REFRESH(h->cl_auth)) goto call_again; } /* end of unsuccessful completion */ if (status == RPC_SUCCESS) { if (! AUTH_VALIDATE(h->cl_auth, &msg.acpted_rply.ar_verf)) { status = RPC_AUTHERROR; } if (msg.acpted_rply.ar_verf.oa_base != NULL) { xdrs->x_op = XDR_FREE; (void)xdr_opaque_auth(xdrs, &(msg.acpted_rply.ar_verf)); } } return (status); } /*ARGSUSED*/ static void clnt_raw_geterr(cl, error) CLIENT *cl; struct rpc_err *error; { } /* ARGSUSED */ static bool_t clnt_raw_freeres(cl, xdr_res, res_ptr) CLIENT *cl; xdrproc_t xdr_res; caddr_t res_ptr; { struct clntraw_private *clp = clntraw_private; XDR *xdrs = &clp->xdr_stream; bool_t rval; mutex_lock(&clntraw_lock); if (clp == NULL) { rval = (bool_t) RPC_FAILED; mutex_unlock(&clntraw_lock); return (rval); } mutex_unlock(&clntraw_lock); xdrs->x_op = XDR_FREE; return ((*xdr_res)(xdrs, res_ptr)); } /*ARGSUSED*/ static void clnt_raw_abort(cl) CLIENT *cl; { } /*ARGSUSED*/ static bool_t clnt_raw_control(cl, ui, str) CLIENT *cl; u_int ui; char *str; { return (FALSE); } /*ARGSUSED*/ static void clnt_raw_destroy(cl) CLIENT *cl; { } static struct clnt_ops * clnt_raw_ops() { static struct clnt_ops ops; #ifdef _REENTRANT extern mutex_t ops_lock; #endif /* VARIABLES PROTECTED BY ops_lock: ops */ mutex_lock(&ops_lock); if (ops.cl_call == NULL) { ops.cl_call = clnt_raw_call; ops.cl_abort = clnt_raw_abort; ops.cl_geterr = clnt_raw_geterr; ops.cl_freeres = clnt_raw_freeres; ops.cl_destroy = clnt_raw_destroy; ops.cl_control = clnt_raw_control; } mutex_unlock(&ops_lock); return (&ops); }