1 /* $NetBSD: rpcb_prot.c,v 1.1 2000/06/02 23:11:15 fvdl Exp $ */ 2 3 /* 4 * Sun RPC is a product of Sun Microsystems, Inc. and is provided for 5 * unrestricted use provided that this legend is included on all tape 6 * media and as a part of the software program in whole or part. Users 7 * may copy or modify Sun RPC without charge, but are not authorized 8 * to license or distribute it to anyone else except as part of a product or 9 * program developed by the user. 10 * 11 * SUN RPC IS PROVIDED AS IS WITH NO WARRANTIES OF ANY KIND INCLUDING THE 12 * WARRANTIES OF DESIGN, MERCHANTIBILITY AND FITNESS FOR A PARTICULAR 13 * PURPOSE, OR ARISING FROM A COURSE OF DEALING, USAGE OR TRADE PRACTICE. 14 * 15 * Sun RPC is provided with no support and without any obligation on the 16 * part of Sun Microsystems, Inc. to assist in its use, correction, 17 * modification or enhancement. 18 * 19 * SUN MICROSYSTEMS, INC. SHALL HAVE NO LIABILITY WITH RESPECT TO THE 20 * INFRINGEMENT OF COPYRIGHTS, TRADE SECRETS OR ANY PATENTS BY SUN RPC 21 * OR ANY PART THEREOF. 22 * 23 * In no event will Sun Microsystems, Inc. be liable for any lost revenue 24 * or profits or other special, indirect and consequential damages, even if 25 * Sun has been advised of the possibility of such damages. 26 * 27 * Sun Microsystems, Inc. 28 * 2550 Garcia Avenue 29 * Mountain View, California 94043 30 */ 31 /* 32 * Copyright (c) 1986-1991 by Sun Microsystems Inc. 33 */ 34 35 /* #ident "@(#)rpcb_prot.c 1.13 94/04/24 SMI" */ 36 37 #if 0 38 #if !defined(lint) && defined(SCCSIDS) 39 static char sccsid[] = "@(#)rpcb_prot.c 1.9 89/04/21 Copyr 1984 Sun Micro"; 40 #endif 41 #endif 42 43 /* 44 * rpcb_prot.c 45 * XDR routines for the rpcbinder version 3. 46 * 47 * Copyright (C) 1984, 1988, Sun Microsystems, Inc. 48 */ 49 50 #include "namespace.h" 51 52 #include <rpc/rpc.h> 53 #include <rpc/types.h> 54 #include <rpc/xdr.h> 55 #include <rpc/rpcb_prot.h> 56 57 #ifdef __weak_alias 58 __weak_alias(xdr_rpcb,_xdr_rpcb) 59 __weak_alias(xdr_rpcblist_ptr,_xdr_rpcblist_ptr) 60 __weak_alias(xdr_rpcblist,_xdr_rpcblist) 61 __weak_alias(xdr_rpcb_entry,_xdr_rpcb_entry) 62 __weak_alias(xdr_rpcb_entry_list_ptr,_xdr_rpcb_entry_list_ptr) 63 __weak_alias(xdr_rpcb_rmtcallargs,_xdr_rpcb_rmtcallargs) 64 __weak_alias(xdr_rpcb_rmtcallres,_xdr_rpcb_rmtcallres) 65 __weak_alias(xdr_netbuf,_xdr_netbuf) 66 #endif 67 68 69 bool_t 70 xdr_rpcb(xdrs, objp) 71 XDR *xdrs; 72 RPCB *objp; 73 { 74 if (!xdr_u_int32_t(xdrs, &objp->r_prog)) { 75 return (FALSE); 76 } 77 if (!xdr_u_int32_t(xdrs, &objp->r_vers)) { 78 return (FALSE); 79 } 80 if (!xdr_string(xdrs, &objp->r_netid, ~0)) { 81 return (FALSE); 82 } 83 if (!xdr_string(xdrs, &objp->r_addr, ~0)) { 84 return (FALSE); 85 } 86 if (!xdr_string(xdrs, &objp->r_owner, ~0)) { 87 return (FALSE); 88 } 89 return (TRUE); 90 } 91 92 /* 93 * rpcblist_ptr implements a linked list. The RPCL definition from 94 * rpcb_prot.x is: 95 * 96 * struct rpcblist { 97 * rpcb rpcb_map; 98 * struct rpcblist *rpcb_next; 99 * }; 100 * typedef rpcblist *rpcblist_ptr; 101 * 102 * Recall that "pointers" in XDR are encoded as a boolean, indicating whether 103 * there's any data behind the pointer, followed by the data (if any exists). 104 * The boolean can be interpreted as ``more data follows me''; if FALSE then 105 * nothing follows the boolean; if TRUE then the boolean is followed by an 106 * actual struct rpcb, and another rpcblist_ptr (declared in RPCL as "struct 107 * rpcblist *"). 108 * 109 * This could be implemented via the xdr_pointer type, though this would 110 * result in one recursive call per element in the list. Rather than do that 111 * we can ``unwind'' the recursion into a while loop and use xdr_reference to 112 * serialize the rpcb elements. 113 */ 114 115 bool_t 116 xdr_rpcblist_ptr(xdrs, rp) 117 register XDR *xdrs; 118 register rpcblist_ptr *rp; 119 { 120 /* 121 * more_elements is pre-computed in case the direction is 122 * XDR_ENCODE or XDR_FREE. more_elements is overwritten by 123 * xdr_bool when the direction is XDR_DECODE. 124 */ 125 bool_t more_elements; 126 register int freeing = (xdrs->x_op == XDR_FREE); 127 rpcblist_ptr next; 128 rpcblist_ptr next_copy; 129 130 while (TRUE) { 131 more_elements = (bool_t)(*rp != NULL); 132 if (! xdr_bool(xdrs, &more_elements)) { 133 return (FALSE); 134 } 135 if (! more_elements) { 136 return (TRUE); /* we are done */ 137 } 138 /* 139 * the unfortunate side effect of non-recursion is that in 140 * the case of freeing we must remember the next object 141 * before we free the current object ... 142 */ 143 if (freeing) 144 next = (*rp)->rpcb_next; 145 if (! xdr_reference(xdrs, (caddr_t *)rp, 146 (u_int)sizeof (rpcblist), (xdrproc_t)xdr_rpcb)) { 147 return (FALSE); 148 } 149 if (freeing) { 150 next_copy = next; 151 rp = &next_copy; 152 /* 153 * Note that in the subsequent iteration, next_copy 154 * gets nulled out by the xdr_reference 155 * but next itself survives. 156 */ 157 } else { 158 rp = &((*rp)->rpcb_next); 159 } 160 } 161 /*NOTREACHED*/ 162 } 163 164 /* 165 * xdr_rpcblist() is specified to take a RPCBLIST **, but is identical in 166 * functionality to xdr_rpcblist_ptr(). 167 */ 168 bool_t 169 xdr_rpcblist(xdrs, rp) 170 register XDR *xdrs; 171 register RPCBLIST **rp; 172 { 173 bool_t dummy; 174 175 dummy = xdr_rpcblist_ptr(xdrs, (rpcblist_ptr *)rp); 176 return (dummy); 177 } 178 179 180 bool_t 181 xdr_rpcb_entry(xdrs, objp) 182 XDR *xdrs; 183 rpcb_entry *objp; 184 { 185 if (!xdr_string(xdrs, &objp->r_maddr, ~0)) { 186 return (FALSE); 187 } 188 if (!xdr_string(xdrs, &objp->r_nc_netid, ~0)) { 189 return (FALSE); 190 } 191 if (!xdr_u_int32_t(xdrs, &objp->r_nc_semantics)) { 192 return (FALSE); 193 } 194 if (!xdr_string(xdrs, &objp->r_nc_protofmly, ~0)) { 195 return (FALSE); 196 } 197 if (!xdr_string(xdrs, &objp->r_nc_proto, ~0)) { 198 return (FALSE); 199 } 200 return (TRUE); 201 } 202 203 bool_t 204 xdr_rpcb_entry_list_ptr(xdrs, rp) 205 register XDR *xdrs; 206 register rpcb_entry_list_ptr *rp; 207 { 208 /* 209 * more_elements is pre-computed in case the direction is 210 * XDR_ENCODE or XDR_FREE. more_elements is overwritten by 211 * xdr_bool when the direction is XDR_DECODE. 212 */ 213 bool_t more_elements; 214 register int freeing = (xdrs->x_op == XDR_FREE); 215 rpcb_entry_list_ptr next; 216 rpcb_entry_list_ptr next_copy; 217 218 while (TRUE) { 219 more_elements = (bool_t)(*rp != NULL); 220 if (! xdr_bool(xdrs, &more_elements)) { 221 return (FALSE); 222 } 223 if (! more_elements) { 224 return (TRUE); /* we are done */ 225 } 226 /* 227 * the unfortunate side effect of non-recursion is that in 228 * the case of freeing we must remember the next object 229 * before we free the current object ... 230 */ 231 if (freeing) 232 next = (*rp)->rpcb_entry_next; 233 if (! xdr_reference(xdrs, (caddr_t *)rp, 234 (u_int)sizeof (rpcb_entry_list), 235 (xdrproc_t)xdr_rpcb_entry)) { 236 return (FALSE); 237 } 238 if (freeing) { 239 next_copy = next; 240 rp = &next_copy; 241 /* 242 * Note that in the subsequent iteration, next_copy 243 * gets nulled out by the xdr_reference 244 * but next itself survives. 245 */ 246 } else { 247 rp = &((*rp)->rpcb_entry_next); 248 } 249 } 250 /*NOTREACHED*/ 251 } 252 253 /* 254 * XDR remote call arguments 255 * written for XDR_ENCODE direction only 256 */ 257 bool_t 258 xdr_rpcb_rmtcallargs(xdrs, p) 259 XDR *xdrs; 260 struct rpcb_rmtcallargs *p; 261 { 262 struct r_rpcb_rmtcallargs *objp = (struct r_rpcb_rmtcallargs *)p; 263 u_int lenposition, argposition, position; 264 int32_t *buf; 265 266 buf = XDR_INLINE(xdrs, 3 * BYTES_PER_XDR_UNIT); 267 if (buf == NULL) { 268 if (!xdr_u_int32_t(xdrs, &objp->prog)) { 269 return (FALSE); 270 } 271 if (!xdr_u_int32_t(xdrs, &objp->vers)) { 272 return (FALSE); 273 } 274 if (!xdr_u_int32_t(xdrs, &objp->proc)) { 275 return (FALSE); 276 } 277 } else { 278 IXDR_PUT_U_LONG(buf, objp->prog); 279 IXDR_PUT_U_LONG(buf, objp->vers); 280 IXDR_PUT_U_LONG(buf, objp->proc); 281 } 282 283 /* 284 * All the jugglery for just getting the size of the arguments 285 */ 286 lenposition = XDR_GETPOS(xdrs); 287 if (! xdr_u_int(xdrs, &(objp->args.args_len))) { 288 return (FALSE); 289 } 290 argposition = XDR_GETPOS(xdrs); 291 if (! (*objp->xdr_args)(xdrs, objp->args.args_val)) { 292 return (FALSE); 293 } 294 position = XDR_GETPOS(xdrs); 295 objp->args.args_len = (u_long)position - (u_long)argposition; 296 XDR_SETPOS(xdrs, lenposition); 297 if (! xdr_u_int(xdrs, &(objp->args.args_len))) { 298 return (FALSE); 299 } 300 XDR_SETPOS(xdrs, position); 301 return (TRUE); 302 } 303 304 /* 305 * XDR remote call results 306 * written for XDR_DECODE direction only 307 */ 308 bool_t 309 xdr_rpcb_rmtcallres(xdrs, p) 310 XDR *xdrs; 311 struct rpcb_rmtcallres *p; 312 { 313 bool_t dummy; 314 struct r_rpcb_rmtcallres *objp = (struct r_rpcb_rmtcallres *)p; 315 316 if (!xdr_string(xdrs, &objp->addr, ~0)) { 317 return (FALSE); 318 } 319 if (!xdr_u_int(xdrs, &objp->results.results_len)) { 320 return (FALSE); 321 } 322 dummy = (*(objp->xdr_res))(xdrs, objp->results.results_val); 323 return (dummy); 324 } 325 326 bool_t 327 xdr_netbuf(xdrs, objp) 328 XDR *xdrs; 329 struct netbuf *objp; 330 { 331 bool_t dummy; 332 333 if (!xdr_u_int32_t(xdrs, (u_int32_t *) &objp->maxlen)) { 334 return (FALSE); 335 } 336 dummy = xdr_bytes(xdrs, (char **)&(objp->buf), 337 (u_int *)&(objp->len), objp->maxlen); 338 return (dummy); 339 } 340