rpcb_prot.c revision 296373
1226586Sdim/* $NetBSD: rpcb_prot.c,v 1.3 2000/07/14 08:40:42 fvdl Exp $ */ 2226586Sdim 3353358Sdim/*- 4353358Sdim * Copyright (c) 2009, Sun Microsystems, Inc. 5353358Sdim * All rights reserved. 6226586Sdim * 7226586Sdim * Redistribution and use in source and binary forms, with or without 8226586Sdim * modification, are permitted provided that the following conditions are met: 9243830Sdim * - Redistributions of source code must retain the above copyright notice, 10226586Sdim * this list of conditions and the following disclaimer. 11226586Sdim * - Redistributions in binary form must reproduce the above copyright notice, 12226586Sdim * this list of conditions and the following disclaimer in the documentation 13280031Sdim * and/or other materials provided with the distribution. 14280031Sdim * - Neither the name of Sun Microsystems, Inc. nor the names of its 15226586Sdim * contributors may be used to endorse or promote products derived 16226586Sdim * from this software without specific prior written permission. 17226586Sdim * 18243830Sdim * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" 19226586Sdim * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 20249423Sdim * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 21249423Sdim * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE 22226586Sdim * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 23226586Sdim * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 24226586Sdim * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 25276479Sdim * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 26309124Sdim * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 27226586Sdim * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 28226586Sdim * POSSIBILITY OF SUCH DAMAGE. 29226586Sdim */ 30226586Sdim/* 31226586Sdim * Copyright (c) 1986-1991 by Sun Microsystems Inc. 32226586Sdim */ 33226586Sdim 34226586Sdim/* #ident "@(#)rpcb_prot.c 1.13 94/04/24 SMI" */ 35226586Sdim 36226586Sdim#if defined(LIBC_SCCS) && !defined(lint) 37341825Sdimstatic char sccsid[] = "@(#)rpcb_prot.c 1.9 89/04/21 Copyr 1984 Sun Micro"; 38239462Sdim#endif 39239462Sdim#include <sys/cdefs.h> 40226586Sdim__FBSDID("$FreeBSD: releng/10.3/lib/libc/rpc/rpcb_prot.c 294300 2016-01-19 01:30:22Z ngie $"); 41280031Sdim 42280031Sdim/* 43280031Sdim * rpcb_prot.c 44280031Sdim * XDR routines for the rpcbinder version 3. 45226586Sdim * 46226586Sdim * Copyright (C) 1984, 1988, Sun Microsystems, Inc. 47226586Sdim */ 48226586Sdim 49226586Sdim#include "namespace.h" 50226586Sdim#include <rpc/rpc.h> 51226586Sdim#include <rpc/types.h> 52226586Sdim#include <rpc/xdr.h> 53226586Sdim#include <rpc/rpcb_prot.h> 54226586Sdim#include "un-namespace.h" 55226586Sdim 56226586Sdimbool_t 57226586Sdimxdr_rpcb(xdrs, objp) 58226586Sdim XDR *xdrs; 59226586Sdim RPCB *objp; 60226586Sdim{ 61226586Sdim if (!xdr_u_int32_t(xdrs, &objp->r_prog)) { 62226586Sdim return (FALSE); 63226586Sdim } 64226586Sdim if (!xdr_u_int32_t(xdrs, &objp->r_vers)) { 65226586Sdim return (FALSE); 66226586Sdim } 67226586Sdim if (!xdr_string(xdrs, &objp->r_netid, (u_int)~0)) { 68226586Sdim return (FALSE); 69226586Sdim } 70226586Sdim if (!xdr_string(xdrs, &objp->r_addr, (u_int)~0)) { 71226586Sdim return (FALSE); 72226586Sdim } 73226586Sdim if (!xdr_string(xdrs, &objp->r_owner, (u_int)~0)) { 74226586Sdim return (FALSE); 75226586Sdim } 76226586Sdim return (TRUE); 77226586Sdim} 78288943Sdim 79226586Sdim/* 80226586Sdim * rpcblist_ptr implements a linked list. The RPCL definition from 81226586Sdim * rpcb_prot.x is: 82226586Sdim * 83226586Sdim * struct rpcblist { 84226586Sdim * rpcb rpcb_map; 85226586Sdim * struct rpcblist *rpcb_next; 86226586Sdim * }; 87226586Sdim * typedef rpcblist *rpcblist_ptr; 88226586Sdim * 89226586Sdim * Recall that "pointers" in XDR are encoded as a boolean, indicating whether 90226586Sdim * there's any data behind the pointer, followed by the data (if any exists). 91226586Sdim * The boolean can be interpreted as ``more data follows me''; if FALSE then 92234353Sdim * nothing follows the boolean; if TRUE then the boolean is followed by an 93226586Sdim * actual struct rpcb, and another rpcblist_ptr (declared in RPCL as "struct 94226586Sdim * rpcblist *"). 95226586Sdim * 96226586Sdim * This could be implemented via the xdr_pointer type, though this would 97226586Sdim * result in one recursive call per element in the list. Rather than do that 98226586Sdim * we can ``unwind'' the recursion into a while loop and use xdr_reference to 99226586Sdim * serialize the rpcb elements. 100314564Sdim */ 101226586Sdim 102226586Sdimbool_t 103226586Sdimxdr_rpcblist_ptr(xdrs, rp) 104314564Sdim XDR *xdrs; 105226586Sdim rpcblist_ptr *rp; 106226586Sdim{ 107344779Sdim /* 108344779Sdim * more_elements is pre-computed in case the direction is 109226586Sdim * XDR_ENCODE or XDR_FREE. more_elements is overwritten by 110243830Sdim * xdr_bool when the direction is XDR_DECODE. 111243830Sdim */ 112243830Sdim bool_t more_elements; 113314564Sdim int freeing = (xdrs->x_op == XDR_FREE); 114341825Sdim rpcblist_ptr next; 115341825Sdim rpcblist_ptr next_copy; 116243830Sdim 117243830Sdim next = NULL; 118226586Sdim for (;;) { 119226586Sdim more_elements = (bool_t)(*rp != NULL); 120226586Sdim if (! xdr_bool(xdrs, &more_elements)) { 121226586Sdim return (FALSE); 122226586Sdim } 123226586Sdim if (! more_elements) { 124226586Sdim return (TRUE); /* we are done */ 125226586Sdim } 126226586Sdim /* 127314564Sdim * the unfortunate side effect of non-recursion is that in 128226586Sdim * the case of freeing we must remember the next object 129226586Sdim * before we free the current object ... 130226586Sdim */ 131226586Sdim if (freeing && *rp) 132226586Sdim next = (*rp)->rpcb_next; 133226586Sdim if (! xdr_reference(xdrs, (caddr_t *)rp, 134226586Sdim (u_int)sizeof (rpcblist), (xdrproc_t)xdr_rpcb)) { 135226586Sdim return (FALSE); 136226586Sdim } 137226586Sdim if (freeing) { 138226586Sdim next_copy = next; 139226586Sdim rp = &next_copy; 140226586Sdim /* 141226586Sdim * Note that in the subsequent iteration, next_copy 142226586Sdim * gets nulled out by the xdr_reference 143226586Sdim * but next itself survives. 144226586Sdim */ 145226586Sdim } else if (*rp) { 146226586Sdim rp = &((*rp)->rpcb_next); 147226586Sdim } 148226586Sdim } 149226586Sdim /*NOTREACHED*/ 150226586Sdim} 151226586Sdim 152226586Sdim/* 153226586Sdim * xdr_rpcblist() is specified to take a RPCBLIST **, but is identical in 154226586Sdim * functionality to xdr_rpcblist_ptr(). 155226586Sdim */ 156226586Sdimbool_t 157226586Sdimxdr_rpcblist(xdrs, rp) 158226586Sdim XDR *xdrs; 159226586Sdim RPCBLIST **rp; 160226586Sdim{ 161226586Sdim bool_t dummy; 162226586Sdim 163226586Sdim dummy = xdr_rpcblist_ptr(xdrs, (rpcblist_ptr *)rp); 164226586Sdim return (dummy); 165226586Sdim} 166226586Sdim 167226586Sdim 168226586Sdimbool_t 169226586Sdimxdr_rpcb_entry(xdrs, objp) 170226586Sdim XDR *xdrs; 171226586Sdim rpcb_entry *objp; 172226586Sdim{ 173226586Sdim if (!xdr_string(xdrs, &objp->r_maddr, (u_int)~0)) { 174226586Sdim return (FALSE); 175226586Sdim } 176226586Sdim if (!xdr_string(xdrs, &objp->r_nc_netid, (u_int)~0)) { 177249423Sdim return (FALSE); 178249423Sdim } 179249423Sdim if (!xdr_u_int32_t(xdrs, &objp->r_nc_semantics)) { 180249423Sdim return (FALSE); 181249423Sdim } 182341825Sdim if (!xdr_string(xdrs, &objp->r_nc_protofmly, (u_int)~0)) { 183341825Sdim return (FALSE); 184226586Sdim } 185249423Sdim if (!xdr_string(xdrs, &objp->r_nc_proto, (u_int)~0)) { 186249423Sdim return (FALSE); 187249423Sdim } 188249423Sdim return (TRUE); 189249423Sdim} 190341825Sdim 191226586Sdimbool_t 192226586Sdimxdr_rpcb_entry_list_ptr(xdrs, rp) 193341825Sdim XDR *xdrs; 194341825Sdim rpcb_entry_list_ptr *rp; 195341825Sdim{ 196296417Sdim /* 197296417Sdim * more_elements is pre-computed in case the direction is 198296417Sdim * XDR_ENCODE or XDR_FREE. more_elements is overwritten by 199296417Sdim * xdr_bool when the direction is XDR_DECODE. 200296417Sdim */ 201296417Sdim bool_t more_elements; 202296417Sdim int freeing = (xdrs->x_op == XDR_FREE); 203341825Sdim rpcb_entry_list_ptr next; 204341825Sdim rpcb_entry_list_ptr next_copy; 205341825Sdim 206341825Sdim next = NULL; 207296417Sdim for (;;) { 208296417Sdim more_elements = (bool_t)(*rp != NULL); 209296417Sdim if (! xdr_bool(xdrs, &more_elements)) { 210296417Sdim return (FALSE); 211296417Sdim } 212296417Sdim if (! more_elements) { 213341825Sdim return (TRUE); /* we are done */ 214314564Sdim } 215314564Sdim /* 216296417Sdim * the unfortunate side effect of non-recursion is that in 217341825Sdim * the case of freeing we must remember the next object 218341825Sdim * before we free the current object ... 219341825Sdim */ 220341825Sdim if (freeing && *rp) 221341825Sdim next = (*rp)->rpcb_entry_next; 222249423Sdim if (! xdr_reference(xdrs, (caddr_t *)rp, 223249423Sdim (u_int)sizeof (rpcb_entry_list), 224314564Sdim (xdrproc_t)xdr_rpcb_entry)) { 225341825Sdim return (FALSE); 226341825Sdim } 227341825Sdim if (freeing) { 228226586Sdim next_copy = next; 229226586Sdim rp = &next_copy; 230226586Sdim /* 231226586Sdim * Note that in the subsequent iteration, next_copy 232226586Sdim * gets nulled out by the xdr_reference 233226586Sdim * but next itself survives. 234226586Sdim */ 235226586Sdim } else if (*rp) { 236226586Sdim rp = &((*rp)->rpcb_entry_next); 237341825Sdim } 238341825Sdim } 239341825Sdim /*NOTREACHED*/ 240226586Sdim} 241341825Sdim 242341825Sdim/* 243341825Sdim * XDR remote call arguments 244226586Sdim * written for XDR_ENCODE direction only 245341825Sdim */ 246341825Sdimbool_t 247226586Sdimxdr_rpcb_rmtcallargs(xdrs, p) 248341825Sdim XDR *xdrs; 249341825Sdim struct rpcb_rmtcallargs *p; 250341825Sdim{ 251341825Sdim struct r_rpcb_rmtcallargs *objp = 252341825Sdim (struct r_rpcb_rmtcallargs *)(void *)p; 253341825Sdim u_int lenposition, argposition, position; 254341825Sdim int32_t *buf; 255341825Sdim 256226586Sdim buf = XDR_INLINE(xdrs, 3 * BYTES_PER_XDR_UNIT); 257341825Sdim if (buf == NULL) { 258341825Sdim if (!xdr_u_int32_t(xdrs, &objp->prog)) { 259341825Sdim return (FALSE); 260341825Sdim } 261226586Sdim if (!xdr_u_int32_t(xdrs, &objp->vers)) { 262341825Sdim return (FALSE); 263341825Sdim } 264341825Sdim if (!xdr_u_int32_t(xdrs, &objp->proc)) { 265249423Sdim return (FALSE); 266249423Sdim } 267249423Sdim } else { 268249423Sdim IXDR_PUT_U_INT32(buf, objp->prog); 269249423Sdim IXDR_PUT_U_INT32(buf, objp->vers); 270249423Sdim IXDR_PUT_U_INT32(buf, objp->proc); 271249423Sdim } 272249423Sdim 273249423Sdim /* 274249423Sdim * All the jugglery for just getting the size of the arguments 275249423Sdim */ 276249423Sdim lenposition = XDR_GETPOS(xdrs); 277249423Sdim if (! xdr_u_int(xdrs, &(objp->args.args_len))) { 278249423Sdim return (FALSE); 279249423Sdim } 280314564Sdim argposition = XDR_GETPOS(xdrs); 281261991Sdim if (! (*objp->xdr_args)(xdrs, objp->args.args_val)) { 282341825Sdim return (FALSE); 283249423Sdim } 284249423Sdim position = XDR_GETPOS(xdrs); 285276479Sdim objp->args.args_len = (u_int)((u_long)position - (u_long)argposition); 286276479Sdim XDR_SETPOS(xdrs, lenposition); 287276479Sdim if (! xdr_u_int(xdrs, &(objp->args.args_len))) { 288226586Sdim return (FALSE); 289341825Sdim } 290249423Sdim XDR_SETPOS(xdrs, position); 291249423Sdim return (TRUE); 292276479Sdim} 293276479Sdim 294276479Sdim/* 295249423Sdim * XDR remote call results 296226586Sdim * written for XDR_DECODE direction only 297226586Sdim */ 298341825Sdimbool_t 299341825Sdimxdr_rpcb_rmtcallres(xdrs, p) 300226586Sdim XDR *xdrs; 301341825Sdim struct rpcb_rmtcallres *p; 302341825Sdim{ 303341825Sdim bool_t dummy; 304341825Sdim struct r_rpcb_rmtcallres *objp = (struct r_rpcb_rmtcallres *)(void *)p; 305341825Sdim 306341825Sdim if (!xdr_string(xdrs, &objp->addr, (u_int)~0)) { 307341825Sdim return (FALSE); 308226586Sdim } 309226586Sdim if (!xdr_u_int(xdrs, &objp->results.results_len)) { 310226586Sdim return (FALSE); 311314564Sdim } 312226586Sdim dummy = (*(objp->xdr_res))(xdrs, objp->results.results_val); 313226586Sdim return (dummy); 314226586Sdim} 315226586Sdim 316226586Sdimbool_t 317226586Sdimxdr_netbuf(xdrs, objp) 318226586Sdim XDR *xdrs; 319226586Sdim struct netbuf *objp; 320239462Sdim{ 321239462Sdim bool_t dummy; 322239462Sdim void **pp; 323226586Sdim 324226586Sdim if (!xdr_u_int32_t(xdrs, (u_int32_t *) &objp->maxlen)) { 325226586Sdim return (FALSE); 326226586Sdim } 327243830Sdim pp = &objp->buf; 328314564Sdim dummy = xdr_bytes(xdrs, (char **) pp, 329234353Sdim (u_int *)&(objp->len), objp->maxlen); 330226586Sdim return (dummy); 331341825Sdim} 332234353Sdim