rpcb_prot.c revision 90271
1229997Sken/* $NetBSD: rpcb_prot.c,v 1.3 2000/07/14 08:40:42 fvdl Exp $ */ 2229997Sken/* $FreeBSD: head/lib/libc/rpc/rpcb_prot.c 90271 2002-02-05 23:43:43Z alfred $ */ 3229997Sken 4229997Sken/* 5229997Sken * Sun RPC is a product of Sun Microsystems, Inc. and is provided for 6229997Sken * unrestricted use provided that this legend is included on all tape 7229997Sken * media and as a part of the software program in whole or part. Users 8229997Sken * may copy or modify Sun RPC without charge, but are not authorized 9229997Sken * to license or distribute it to anyone else except as part of a product or 10229997Sken * program developed by the user. 11229997Sken * 12229997Sken * SUN RPC IS PROVIDED AS IS WITH NO WARRANTIES OF ANY KIND INCLUDING THE 13229997Sken * WARRANTIES OF DESIGN, MERCHANTIBILITY AND FITNESS FOR A PARTICULAR 14229997Sken * PURPOSE, OR ARISING FROM A COURSE OF DEALING, USAGE OR TRADE PRACTICE. 15229997Sken * 16229997Sken * Sun RPC is provided with no support and without any obligation on the 17229997Sken * part of Sun Microsystems, Inc. to assist in its use, correction, 18229997Sken * modification or enhancement. 19229997Sken * 20229997Sken * SUN MICROSYSTEMS, INC. SHALL HAVE NO LIABILITY WITH RESPECT TO THE 21229997Sken * INFRINGEMENT OF COPYRIGHTS, TRADE SECRETS OR ANY PATENTS BY SUN RPC 22229997Sken * OR ANY PART THEREOF. 23229997Sken * 24229997Sken * In no event will Sun Microsystems, Inc. be liable for any lost revenue 25229997Sken * or profits or other special, indirect and consequential damages, even if 26229997Sken * Sun has been advised of the possibility of such damages. 27229997Sken * 28229997Sken * Sun Microsystems, Inc. 29229997Sken * 2550 Garcia Avenue 30229997Sken * Mountain View, California 94043 31229997Sken */ 32229997Sken/* 33229997Sken * Copyright (c) 1986-1991 by Sun Microsystems Inc. 34229997Sken */ 35229997Sken 36229997Sken/* #ident "@(#)rpcb_prot.c 1.13 94/04/24 SMI" */ 37229997Sken 38229997Sken#if 0 39229997Sken#if !defined(lint) && defined(SCCSIDS) 40229997Skenstatic char sccsid[] = "@(#)rpcb_prot.c 1.9 89/04/21 Copyr 1984 Sun Micro"; 41229997Sken#endif 42229997Sken#endif 43229997Sken 44229997Sken/* 45229997Sken * rpcb_prot.c 46229997Sken * XDR routines for the rpcbinder version 3. 47229997Sken * 48229997Sken * Copyright (C) 1984, 1988, Sun Microsystems, Inc. 49229997Sken */ 50229997Sken 51229997Sken#include "namespace.h" 52229997Sken#include <rpc/rpc.h> 53229997Sken#include <rpc/types.h> 54229997Sken#include <rpc/xdr.h> 55229997Sken#include <rpc/rpcb_prot.h> 56229997Sken#include "un-namespace.h" 57229997Sken 58229997Skenbool_t 59229997Skenxdr_rpcb(xdrs, objp) 60229997Sken XDR *xdrs; 61229997Sken RPCB *objp; 62229997Sken{ 63229997Sken if (!xdr_u_int32_t(xdrs, &objp->r_prog)) { 64229997Sken return (FALSE); 65229997Sken } 66229997Sken if (!xdr_u_int32_t(xdrs, &objp->r_vers)) { 67229997Sken return (FALSE); 68229997Sken } 69229997Sken if (!xdr_string(xdrs, &objp->r_netid, (u_int)~0)) { 70229997Sken return (FALSE); 71229997Sken } 72229997Sken if (!xdr_string(xdrs, &objp->r_addr, (u_int)~0)) { 73229997Sken return (FALSE); 74229997Sken } 75229997Sken if (!xdr_string(xdrs, &objp->r_owner, (u_int)~0)) { 76229997Sken return (FALSE); 77229997Sken } 78229997Sken return (TRUE); 79229997Sken} 80229997Sken 81229997Sken/* 82229997Sken * rpcblist_ptr implements a linked list. The RPCL definition from 83229997Sken * rpcb_prot.x is: 84229997Sken * 85229997Sken * struct rpcblist { 86229997Sken * rpcb rpcb_map; 87229997Sken * struct rpcblist *rpcb_next; 88229997Sken * }; 89229997Sken * typedef rpcblist *rpcblist_ptr; 90229997Sken * 91229997Sken * Recall that "pointers" in XDR are encoded as a boolean, indicating whether 92229997Sken * there's any data behind the pointer, followed by the data (if any exists). 93229997Sken * The boolean can be interpreted as ``more data follows me''; if FALSE then 94229997Sken * nothing follows the boolean; if TRUE then the boolean is followed by an 95229997Sken * actual struct rpcb, and another rpcblist_ptr (declared in RPCL as "struct 96229997Sken * rpcblist *"). 97229997Sken * 98229997Sken * This could be implemented via the xdr_pointer type, though this would 99268697Smav * result in one recursive call per element in the list. Rather than do that 100229997Sken * we can ``unwind'' the recursion into a while loop and use xdr_reference to 101229997Sken * serialize the rpcb elements. 102229997Sken */ 103229997Sken 104229997Skenbool_t 105229997Skenxdr_rpcblist_ptr(xdrs, rp) 106229997Sken XDR *xdrs; 107229997Sken rpcblist_ptr *rp; 108229997Sken{ 109229997Sken /* 110229997Sken * more_elements is pre-computed in case the direction is 111229997Sken * XDR_ENCODE or XDR_FREE. more_elements is overwritten by 112229997Sken * xdr_bool when the direction is XDR_DECODE. 113229997Sken */ 114229997Sken bool_t more_elements; 115229997Sken int freeing = (xdrs->x_op == XDR_FREE); 116229997Sken rpcblist_ptr next; 117229997Sken rpcblist_ptr next_copy; 118229997Sken 119229997Sken next = NULL; 120229997Sken for (;;) { 121229997Sken more_elements = (bool_t)(*rp != NULL); 122229997Sken if (! xdr_bool(xdrs, &more_elements)) { 123229997Sken return (FALSE); 124229997Sken } 125229997Sken if (! more_elements) { 126229997Sken return (TRUE); /* we are done */ 127275881Smav } 128229997Sken /* 129229997Sken * the unfortunate side effect of non-recursion is that in 130275881Smav * the case of freeing we must remember the next object 131229997Sken * before we free the current object ... 132229997Sken */ 133229997Sken if (freeing) 134229997Sken next = (*rp)->rpcb_next; 135229997Sken if (! xdr_reference(xdrs, (caddr_t *)rp, 136229997Sken (u_int)sizeof (rpcblist), (xdrproc_t)xdr_rpcb)) { 137229997Sken return (FALSE); 138229997Sken } 139265634Smav if (freeing) { 140265634Smav next_copy = next; 141265634Smav rp = &next_copy; 142265634Smav /* 143272616Smav * Note that in the subsequent iteration, next_copy 144272616Smav * gets nulled out by the xdr_reference 145268151Smav * but next itself survives. 146268151Smav */ 147268151Smav } else { 148268151Smav rp = &((*rp)->rpcb_next); 149265634Smav } 150265634Smav } 151265634Smav /*NOTREACHED*/ 152265634Smav} 153265634Smav 154265634Smav/* 155265634Smav * xdr_rpcblist() is specified to take a RPCBLIST **, but is identical in 156265634Smav * functionality to xdr_rpcblist_ptr(). 157229997Sken */ 158229997Skenbool_t 159229997Skenxdr_rpcblist(xdrs, rp) 160229997Sken XDR *xdrs; 161229997Sken RPCBLIST **rp; 162229997Sken{ 163229997Sken bool_t dummy; 164229997Sken 165229997Sken dummy = xdr_rpcblist_ptr(xdrs, (rpcblist_ptr *)rp); 166229997Sken return (dummy); 167229997Sken} 168229997Sken 169229997Sken 170229997Skenbool_t 171229997Skenxdr_rpcb_entry(xdrs, objp) 172229997Sken XDR *xdrs; 173229997Sken rpcb_entry *objp; 174229997Sken{ 175229997Sken if (!xdr_string(xdrs, &objp->r_maddr, (u_int)~0)) { 176229997Sken return (FALSE); 177229997Sken } 178229997Sken if (!xdr_string(xdrs, &objp->r_nc_netid, (u_int)~0)) { 179229997Sken return (FALSE); 180229997Sken } 181229997Sken if (!xdr_u_int32_t(xdrs, &objp->r_nc_semantics)) { 182229997Sken return (FALSE); 183229997Sken } 184229997Sken if (!xdr_string(xdrs, &objp->r_nc_protofmly, (u_int)~0)) { 185229997Sken return (FALSE); 186229997Sken } 187229997Sken if (!xdr_string(xdrs, &objp->r_nc_proto, (u_int)~0)) { 188229997Sken return (FALSE); 189229997Sken } 190229997Sken return (TRUE); 191229997Sken} 192229997Sken 193229997Skenbool_t 194229997Skenxdr_rpcb_entry_list_ptr(xdrs, rp) 195229997Sken XDR *xdrs; 196229997Sken rpcb_entry_list_ptr *rp; 197229997Sken{ 198229997Sken /* 199229997Sken * more_elements is pre-computed in case the direction is 200229997Sken * XDR_ENCODE or XDR_FREE. more_elements is overwritten by 201229997Sken * xdr_bool when the direction is XDR_DECODE. 202229997Sken */ 203229997Sken bool_t more_elements; 204229997Sken int freeing = (xdrs->x_op == XDR_FREE); 205229997Sken rpcb_entry_list_ptr next; 206229997Sken rpcb_entry_list_ptr next_copy; 207229997Sken 208229997Sken next = NULL; 209229997Sken for (;;) { 210229997Sken more_elements = (bool_t)(*rp != NULL); 211229997Sken if (! xdr_bool(xdrs, &more_elements)) { 212229997Sken return (FALSE); 213229997Sken } 214229997Sken if (! more_elements) { 215229997Sken return (TRUE); /* we are done */ 216229997Sken } 217229997Sken /* 218229997Sken * the unfortunate side effect of non-recursion is that in 219229997Sken * the case of freeing we must remember the next object 220229997Sken * before we free the current object ... 221229997Sken */ 222229997Sken if (freeing) 223229997Sken next = (*rp)->rpcb_entry_next; 224229997Sken if (! xdr_reference(xdrs, (caddr_t *)rp, 225229997Sken (u_int)sizeof (rpcb_entry_list), 226229997Sken (xdrproc_t)xdr_rpcb_entry)) { 227268556Smav return (FALSE); 228229997Sken } 229229997Sken if (freeing) { 230229997Sken next_copy = next; 231229997Sken rp = &next_copy; 232229997Sken /* 233229997Sken * Note that in the subsequent iteration, next_copy 234229997Sken * gets nulled out by the xdr_reference 235229997Sken * but next itself survives. 236229997Sken */ 237229997Sken } else { 238229997Sken rp = &((*rp)->rpcb_entry_next); 239229997Sken } 240229997Sken } 241229997Sken /*NOTREACHED*/ 242229997Sken} 243229997Sken 244229997Sken/* 245229997Sken * XDR remote call arguments 246229997Sken * written for XDR_ENCODE direction only 247229997Sken */ 248229997Skenbool_t 249229997Skenxdr_rpcb_rmtcallargs(xdrs, p) 250229997Sken XDR *xdrs; 251229997Sken struct rpcb_rmtcallargs *p; 252229997Sken{ 253229997Sken struct r_rpcb_rmtcallargs *objp = 254229997Sken (struct r_rpcb_rmtcallargs *)(void *)p; 255229997Sken u_int lenposition, argposition, position; 256229997Sken int32_t *buf; 257229997Sken 258229997Sken buf = XDR_INLINE(xdrs, 3 * BYTES_PER_XDR_UNIT); 259229997Sken if (buf == NULL) { 260229997Sken if (!xdr_u_int32_t(xdrs, &objp->prog)) { 261229997Sken return (FALSE); 262229997Sken } 263229997Sken if (!xdr_u_int32_t(xdrs, &objp->vers)) { 264229997Sken return (FALSE); 265229997Sken } 266229997Sken if (!xdr_u_int32_t(xdrs, &objp->proc)) { 267229997Sken return (FALSE); 268229997Sken } 269229997Sken } else { 270229997Sken IXDR_PUT_U_INT32(buf, objp->prog); 271229997Sken IXDR_PUT_U_INT32(buf, objp->vers); 272229997Sken IXDR_PUT_U_INT32(buf, objp->proc); 273229997Sken } 274229997Sken 275229997Sken /* 276229997Sken * All the jugglery for just getting the size of the arguments 277229997Sken */ 278229997Sken lenposition = XDR_GETPOS(xdrs); 279229997Sken if (! xdr_u_int(xdrs, &(objp->args.args_len))) { 280229997Sken return (FALSE); 281229997Sken } 282229997Sken argposition = XDR_GETPOS(xdrs); 283229997Sken if (! (*objp->xdr_args)(xdrs, objp->args.args_val)) { 284229997Sken return (FALSE); 285229997Sken } 286229997Sken position = XDR_GETPOS(xdrs); 287229997Sken objp->args.args_len = (u_int)((u_long)position - (u_long)argposition); 288229997Sken XDR_SETPOS(xdrs, lenposition); 289229997Sken if (! xdr_u_int(xdrs, &(objp->args.args_len))) { 290229997Sken return (FALSE); 291229997Sken } 292229997Sken XDR_SETPOS(xdrs, position); 293229997Sken return (TRUE); 294229997Sken} 295229997Sken 296229997Sken/* 297229997Sken * XDR remote call results 298229997Sken * written for XDR_DECODE direction only 299229997Sken */ 300229997Skenbool_t 301229997Skenxdr_rpcb_rmtcallres(xdrs, p) 302268142Smav XDR *xdrs; 303268142Smav struct rpcb_rmtcallres *p; 304268142Smav{ 305268142Smav bool_t dummy; 306268142Smav struct r_rpcb_rmtcallres *objp = (struct r_rpcb_rmtcallres *)(void *)p; 307229997Sken 308229997Sken if (!xdr_string(xdrs, &objp->addr, (u_int)~0)) { 309229997Sken return (FALSE); 310229997Sken } 311268142Smav if (!xdr_u_int(xdrs, &objp->results.results_len)) { 312268142Smav return (FALSE); 313268142Smav } 314268142Smav dummy = (*(objp->xdr_res))(xdrs, objp->results.results_val); 315268142Smav return (dummy); 316268142Smav} 317268142Smav 318268142Smavbool_t 319268142Smavxdr_netbuf(xdrs, objp) 320268142Smav XDR *xdrs; 321268142Smav struct netbuf *objp; 322268142Smav{ 323268142Smav bool_t dummy; 324268142Smav 325268142Smav if (!xdr_u_int32_t(xdrs, (u_int32_t *) &objp->maxlen)) { 326268142Smav return (FALSE); 327268142Smav } 328268142Smav dummy = xdr_bytes(xdrs, (char **)&(objp->buf), 329268142Smav (u_int *)&(objp->len), objp->maxlen); 330268142Smav return (dummy); 331268142Smav} 332268142Smav