rpcb_prot.c revision 1.9.44.1
1 /* $NetBSD: rpcb_prot.c,v 1.9.44.1 2012/10/30 18:58:56 yamt 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 #include <sys/cdefs.h> 38 #if defined(LIBC_SCCS) && !defined(lint) 39 #if 0 40 static char sccsid[] = "@(#)rpcb_prot.c 1.9 89/04/21 Copyr 1984 Sun Micro"; 41 #else 42 __RCSID("$NetBSD: rpcb_prot.c,v 1.9.44.1 2012/10/30 18:58:56 yamt Exp $"); 43 #endif 44 #endif 45 46 /* 47 * rpcb_prot.c 48 * XDR routines for the rpcbinder version 3. 49 * 50 * Copyright (C) 1984, 1988, Sun Microsystems, Inc. 51 */ 52 53 #include "namespace.h" 54 55 #include <rpc/rpc.h> 56 #include <rpc/types.h> 57 #include <rpc/xdr.h> 58 #include <rpc/rpcb_prot.h> 59 60 #include <assert.h> 61 62 #ifdef __weak_alias 63 __weak_alias(xdr_rpcb,_xdr_rpcb) 64 __weak_alias(xdr_rpcblist_ptr,_xdr_rpcblist_ptr) 65 __weak_alias(xdr_rpcblist,_xdr_rpcblist) 66 __weak_alias(xdr_rpcb_entry,_xdr_rpcb_entry) 67 __weak_alias(xdr_rpcb_entry_list_ptr,_xdr_rpcb_entry_list_ptr) 68 __weak_alias(xdr_rpcb_rmtcallargs,_xdr_rpcb_rmtcallargs) 69 __weak_alias(xdr_rpcb_rmtcallres,_xdr_rpcb_rmtcallres) 70 __weak_alias(xdr_netbuf,_xdr_netbuf) 71 #endif 72 73 74 bool_t 75 xdr_rpcb(XDR *xdrs, RPCB *objp) 76 { 77 78 _DIAGASSERT(objp != NULL); 79 80 if (!xdr_u_int32_t(xdrs, &objp->r_prog)) { 81 return (FALSE); 82 } 83 if (!xdr_u_int32_t(xdrs, &objp->r_vers)) { 84 return (FALSE); 85 } 86 if (!xdr_string(xdrs, &objp->r_netid, (u_int)~0)) { 87 return (FALSE); 88 } 89 if (!xdr_string(xdrs, &objp->r_addr, (u_int)~0)) { 90 return (FALSE); 91 } 92 if (!xdr_string(xdrs, &objp->r_owner, (u_int)~0)) { 93 return (FALSE); 94 } 95 return (TRUE); 96 } 97 98 /* 99 * rpcblist_ptr implements a linked list. The RPCL definition from 100 * rpcb_prot.x is: 101 * 102 * struct rpcblist { 103 * rpcb rpcb_map; 104 * struct rpcblist *rpcb_next; 105 * }; 106 * typedef rpcblist *rpcblist_ptr; 107 * 108 * Recall that "pointers" in XDR are encoded as a boolean, indicating whether 109 * there's any data behind the pointer, followed by the data (if any exists). 110 * The boolean can be interpreted as ``more data follows me''; if FALSE then 111 * nothing follows the boolean; if TRUE then the boolean is followed by an 112 * actual struct rpcb, and another rpcblist_ptr (declared in RPCL as "struct 113 * rpcblist *"). 114 * 115 * This could be implemented via the xdr_pointer type, though this would 116 * result in one recursive call per element in the list. Rather than do that 117 * we can ``unwind'' the recursion into a while loop and use xdr_reference to 118 * serialize the rpcb elements. 119 */ 120 121 bool_t 122 xdr_rpcblist_ptr(XDR *xdrs, rpcblist_ptr *rp) 123 { 124 /* 125 * more_elements is pre-computed in case the direction is 126 * XDR_ENCODE or XDR_FREE. more_elements is overwritten by 127 * xdr_bool when the direction is XDR_DECODE. 128 */ 129 bool_t more_elements; 130 int freeing; 131 rpcblist_ptr next; 132 rpcblist_ptr next_copy; 133 134 _DIAGASSERT(xdrs != NULL); 135 /* XXX: rp may be NULL ??? */ 136 137 freeing = (xdrs->x_op == XDR_FREE); 138 next = NULL; 139 140 for (;;) { 141 more_elements = (bool_t)(*rp != NULL); 142 if (! xdr_bool(xdrs, &more_elements)) { 143 return (FALSE); 144 } 145 if (! more_elements) { 146 return (TRUE); /* we are done */ 147 } 148 /* 149 * the unfortunate side effect of non-recursion is that in 150 * the case of freeing we must remember the next object 151 * before we free the current object ... 152 */ 153 if (freeing && *rp) 154 next = (*rp)->rpcb_next; 155 if (! xdr_reference(xdrs, (caddr_t *)rp, 156 (u_int)sizeof (rpcblist), (xdrproc_t)xdr_rpcb)) { 157 return (FALSE); 158 } 159 if (freeing) { 160 next_copy = next; 161 rp = &next_copy; 162 /* 163 * Note that in the subsequent iteration, next_copy 164 * gets nulled out by the xdr_reference 165 * but next itself survives. 166 */ 167 } else if (*rp) { 168 rp = &((*rp)->rpcb_next); 169 } 170 } 171 /*NOTREACHED*/ 172 } 173 174 /* 175 * xdr_rpcblist() is specified to take a RPCBLIST **, but is identical in 176 * functionality to xdr_rpcblist_ptr(). 177 */ 178 bool_t 179 xdr_rpcblist(XDR *xdrs, RPCBLIST **rp) 180 { 181 bool_t dummy; 182 183 dummy = xdr_rpcblist_ptr(xdrs, (rpcblist_ptr *)rp); 184 return (dummy); 185 } 186 187 188 bool_t 189 xdr_rpcb_entry(XDR *xdrs, rpcb_entry *objp) 190 { 191 192 _DIAGASSERT(objp != NULL); 193 194 if (!xdr_string(xdrs, &objp->r_maddr, (u_int)~0)) { 195 return (FALSE); 196 } 197 if (!xdr_string(xdrs, &objp->r_nc_netid, (u_int)~0)) { 198 return (FALSE); 199 } 200 if (!xdr_u_int32_t(xdrs, &objp->r_nc_semantics)) { 201 return (FALSE); 202 } 203 if (!xdr_string(xdrs, &objp->r_nc_protofmly, (u_int)~0)) { 204 return (FALSE); 205 } 206 if (!xdr_string(xdrs, &objp->r_nc_proto, (u_int)~0)) { 207 return (FALSE); 208 } 209 return (TRUE); 210 } 211 212 bool_t 213 xdr_rpcb_entry_list_ptr(XDR *xdrs, rpcb_entry_list_ptr *rp) 214 { 215 /* 216 * more_elements is pre-computed in case the direction is 217 * XDR_ENCODE or XDR_FREE. more_elements is overwritten by 218 * xdr_bool when the direction is XDR_DECODE. 219 */ 220 bool_t more_elements; 221 int freeing; 222 rpcb_entry_list_ptr next; 223 rpcb_entry_list_ptr next_copy; 224 225 _DIAGASSERT(xdrs != NULL); 226 /* XXX: rp is allowed to be NULL ??? */ 227 228 freeing = (xdrs->x_op == XDR_FREE); 229 next = NULL; 230 231 for (;;) { 232 more_elements = (bool_t)(*rp != NULL); 233 if (! xdr_bool(xdrs, &more_elements)) { 234 return (FALSE); 235 } 236 if (! more_elements) { 237 return (TRUE); /* we are done */ 238 } 239 /* 240 * the unfortunate side effect of non-recursion is that in 241 * the case of freeing we must remember the next object 242 * before we free the current object ... 243 */ 244 if (freeing && *rp) 245 next = (*rp)->rpcb_entry_next; 246 if (! xdr_reference(xdrs, (caddr_t *)rp, 247 (u_int)sizeof (rpcb_entry_list), 248 (xdrproc_t)xdr_rpcb_entry)) { 249 return (FALSE); 250 } 251 if (freeing) { 252 next_copy = next; 253 rp = &next_copy; 254 /* 255 * Note that in the subsequent iteration, next_copy 256 * gets nulled out by the xdr_reference 257 * but next itself survives. 258 */ 259 } else if (*rp) { 260 rp = &((*rp)->rpcb_entry_next); 261 } 262 } 263 /*NOTREACHED*/ 264 } 265 266 /* 267 * XDR remote call arguments 268 * written for XDR_ENCODE direction only 269 */ 270 bool_t 271 xdr_rpcb_rmtcallargs(XDR *xdrs, struct rpcb_rmtcallargs *p) 272 { 273 struct r_rpcb_rmtcallargs *objp = 274 (struct r_rpcb_rmtcallargs *)(void *)p; 275 u_int lenposition, argposition, position; 276 int32_t *buf; 277 278 _DIAGASSERT(p != NULL); 279 280 buf = XDR_INLINE(xdrs, 3 * BYTES_PER_XDR_UNIT); 281 if (buf == NULL) { 282 if (!xdr_u_int32_t(xdrs, &objp->prog)) { 283 return (FALSE); 284 } 285 if (!xdr_u_int32_t(xdrs, &objp->vers)) { 286 return (FALSE); 287 } 288 if (!xdr_u_int32_t(xdrs, &objp->proc)) { 289 return (FALSE); 290 } 291 } else { 292 IXDR_PUT_U_INT32(buf, objp->prog); 293 IXDR_PUT_U_INT32(buf, objp->vers); 294 IXDR_PUT_U_INT32(buf, objp->proc); 295 } 296 297 /* 298 * All the jugglery for just getting the size of the arguments 299 */ 300 lenposition = XDR_GETPOS(xdrs); 301 if (! xdr_u_int(xdrs, &(objp->args.args_len))) { 302 return (FALSE); 303 } 304 argposition = XDR_GETPOS(xdrs); 305 if (! (*objp->xdr_args)(xdrs, objp->args.args_val)) { 306 return (FALSE); 307 } 308 position = XDR_GETPOS(xdrs); 309 objp->args.args_len = (u_int)((u_long)position - (u_long)argposition); 310 XDR_SETPOS(xdrs, lenposition); 311 if (! xdr_u_int(xdrs, &(objp->args.args_len))) { 312 return (FALSE); 313 } 314 XDR_SETPOS(xdrs, position); 315 return (TRUE); 316 } 317 318 /* 319 * XDR remote call results 320 * written for XDR_DECODE direction only 321 */ 322 bool_t 323 xdr_rpcb_rmtcallres(XDR *xdrs, struct rpcb_rmtcallres *p) 324 { 325 bool_t dummy; 326 struct r_rpcb_rmtcallres *objp = (struct r_rpcb_rmtcallres *)(void *)p; 327 328 _DIAGASSERT(p != NULL); 329 330 if (!xdr_string(xdrs, &objp->addr, (u_int)~0)) { 331 return (FALSE); 332 } 333 if (!xdr_u_int(xdrs, &objp->results.results_len)) { 334 return (FALSE); 335 } 336 dummy = (*(objp->xdr_res))(xdrs, objp->results.results_val); 337 return (dummy); 338 } 339 340 bool_t 341 xdr_netbuf(XDR *xdrs, struct netbuf *objp) 342 { 343 bool_t dummy; 344 345 _DIAGASSERT(objp != NULL); 346 347 if (!xdr_u_int32_t(xdrs, (u_int32_t *) &objp->maxlen)) { 348 return (FALSE); 349 } 350 dummy = xdr_bytes(xdrs, (char **)(void *)&(objp->buf), 351 (u_int *)&(objp->len), objp->maxlen); 352 return (dummy); 353 } 354
Indexes created Mon Sep 29 03:10:08 GMT 2025