2 * Sun RPC is a product of Sun Microsystems, Inc. and is provided for
3 * unrestricted use provided that this legend is included on all tape
4 * media and as a part of the software program in whole or part. Users
5 * may copy or modify Sun RPC without charge, but are not authorized
6 * to license or distribute it to anyone else except as part of a product or
7 * program developed by the user.
9 * SUN RPC IS PROVIDED AS IS WITH NO WARRANTIES OF ANY KIND INCLUDING THE
10 * WARRANTIES OF DESIGN, MERCHANTIBILITY AND FITNESS FOR A PARTICULAR
11 * PURPOSE, OR ARISING FROM A COURSE OF DEALING, USAGE OR TRADE PRACTICE.
13 * Sun RPC is provided with no support and without any obligation on the
14 * part of Sun Microsystems, Inc. to assist in its use, correction,
15 * modification or enhancement.
17 * SUN MICROSYSTEMS, INC. SHALL HAVE NO LIABILITY WITH RESPECT TO THE
18 * INFRINGEMENT OF COPYRIGHTS, TRADE SECRETS OR ANY PATENTS BY SUN RPC
19 * OR ANY PART THEREOF.
21 * In no event will Sun Microsystems, Inc. be liable for any lost revenue
22 * or profits or other special, indirect and consequential damages, even if
23 * Sun has been advised of the possibility of such damages.
25 * Sun Microsystems, Inc.
27 * Mountain View, California 94043
29 * @(#)rpc_prot.c 1.36 87/08/11 Copyr 1984 Sun Micro
30 * @(#)rpc_prot.c 2.3 88/08/07 4.0 RPCSRC
31 * $FreeBSD: src/lib/libc/rpc/rpc_prot.c,v 1.8 1999/08/28 00:00:46 peter Exp $
32 * $DragonFly: src/lib/libc/rpc/rpc_prot.c,v 1.2 2003/06/17 04:26:45 dillon Exp $
38 * Copyright (C) 1984, Sun Microsystems, Inc.
40 * This set of routines implements the rpc message definition,
41 * its serializer and some common rpc utility routines.
42 * The routines are meant for various implementations of rpc -
43 * they are NOT for the rpc client or rpc service implementations!
44 * Because authentication stuff is easy and is part of rpc, the opaque
45 * routines are also in this program.
48 #include <sys/param.h>
52 /* * * * * * * * * * * * * * XDR Authentication * * * * * * * * * * * */
54 struct opaque_auth _null_auth;
57 * XDR an opaque authentication struct
61 xdr_opaque_auth(xdrs, ap)
63 register struct opaque_auth *ap;
66 if (xdr_enum(xdrs, &(ap->oa_flavor)))
67 return (xdr_bytes(xdrs, &ap->oa_base,
68 &ap->oa_length, MAX_AUTH_BYTES));
76 xdr_des_block(xdrs, blkp)
78 register des_block *blkp;
80 return (xdr_opaque(xdrs, (caddr_t)blkp, sizeof(des_block)));
83 /* * * * * * * * * * * * * * XDR RPC MESSAGE * * * * * * * * * * * * * * * */
86 * XDR the MSG_ACCEPTED part of a reply message union
89 xdr_accepted_reply(xdrs, ar)
91 register struct accepted_reply *ar;
94 /* personalized union, rather than calling xdr_union */
95 if (! xdr_opaque_auth(xdrs, &(ar->ar_verf)))
97 if (! xdr_enum(xdrs, (enum_t *)&(ar->ar_stat)))
99 switch (ar->ar_stat) {
102 return ((*(ar->ar_results.proc))(xdrs, ar->ar_results.where));
105 if (! xdr_u_int32_t(xdrs, &(ar->ar_vers.low)))
107 return (xdr_u_int32_t(xdrs, &(ar->ar_vers.high)));
111 return (TRUE); /* TRUE => open ended set of problems */
115 * XDR the MSG_DENIED part of a reply message union
118 xdr_rejected_reply(xdrs, rr)
120 register struct rejected_reply *rr;
123 /* personalized union, rather than calling xdr_union */
124 if (! xdr_enum(xdrs, (enum_t *)&(rr->rj_stat)))
126 switch (rr->rj_stat) {
129 if (! xdr_u_int32_t(xdrs, &(rr->rj_vers.low)))
131 return (xdr_u_int32_t(xdrs, &(rr->rj_vers.high)));
134 return (xdr_enum(xdrs, (enum_t *)&(rr->rj_why)));
139 static struct xdr_discrim reply_dscrm[3] = {
140 { (int)MSG_ACCEPTED, xdr_accepted_reply },
141 { (int)MSG_DENIED, xdr_rejected_reply },
142 { __dontcare__, NULL_xdrproc_t } };
145 * XDR a reply message
148 xdr_replymsg(xdrs, rmsg)
150 register struct rpc_msg *rmsg;
153 xdr_u_int32_t(xdrs, &(rmsg->rm_xid)) &&
154 xdr_enum(xdrs, (enum_t *)&(rmsg->rm_direction)) &&
155 (rmsg->rm_direction == REPLY) )
156 return (xdr_union(xdrs, (enum_t *)&(rmsg->rm_reply.rp_stat),
157 (caddr_t)&(rmsg->rm_reply.ru), reply_dscrm, NULL_xdrproc_t));
163 * Serializes the "static part" of a call message header.
164 * The fields include: rm_xid, rm_direction, rpcvers, prog, and vers.
165 * The rm_xid is not really static, but the user can easily munge on the fly.
168 xdr_callhdr(xdrs, cmsg)
170 register struct rpc_msg *cmsg;
173 cmsg->rm_direction = CALL;
174 cmsg->rm_call.cb_rpcvers = RPC_MSG_VERSION;
176 (xdrs->x_op == XDR_ENCODE) &&
177 xdr_u_int32_t(xdrs, &(cmsg->rm_xid)) &&
178 xdr_enum(xdrs, (enum_t *)&(cmsg->rm_direction)) &&
179 xdr_u_int32_t(xdrs, &(cmsg->rm_call.cb_rpcvers)) &&
180 xdr_u_int32_t(xdrs, &(cmsg->rm_call.cb_prog)) )
181 return (xdr_u_int32_t(xdrs, &(cmsg->rm_call.cb_vers)));
185 /* ************************** Client utility routine ************* */
188 accepted(acpt_stat, error)
189 register enum accept_stat acpt_stat;
190 register struct rpc_err *error;
196 error->re_status = RPC_PROGUNAVAIL;
200 error->re_status = RPC_PROGVERSMISMATCH;
204 error->re_status = RPC_PROCUNAVAIL;
208 error->re_status = RPC_CANTDECODEARGS;
212 error->re_status = RPC_SYSTEMERROR;
216 error->re_status = RPC_SUCCESS;
219 /* something's wrong, but we don't know what ... */
220 error->re_status = RPC_FAILED;
221 error->re_lb.s1 = (long)MSG_ACCEPTED;
222 error->re_lb.s2 = (long)acpt_stat;
226 rejected(rjct_stat, error)
227 register enum reject_stat rjct_stat;
228 register struct rpc_err *error;
233 case RPC_VERSMISMATCH:
234 error->re_status = RPC_VERSMISMATCH;
238 error->re_status = RPC_AUTHERROR;
243 /* something's wrong, but we don't know what ... */
244 error->re_status = RPC_FAILED;
245 error->re_lb.s1 = (long)MSG_DENIED;
246 error->re_lb.s2 = (long)rjct_stat;
250 * given a reply message, fills in the error
253 _seterr_reply(msg, error)
254 register struct rpc_msg *msg;
255 register struct rpc_err *error;
258 /* optimized for normal, SUCCESSful case */
259 switch (msg->rm_reply.rp_stat) {
262 if (msg->acpted_rply.ar_stat == SUCCESS) {
263 error->re_status = RPC_SUCCESS;
266 accepted(msg->acpted_rply.ar_stat, error);
270 rejected(msg->rjcted_rply.rj_stat, error);
274 error->re_status = RPC_FAILED;
275 error->re_lb.s1 = (long)(msg->rm_reply.rp_stat);
278 switch (error->re_status) {
280 case RPC_VERSMISMATCH:
281 error->re_vers.low = msg->rjcted_rply.rj_vers.low;
282 error->re_vers.high = msg->rjcted_rply.rj_vers.high;
286 error->re_why = msg->rjcted_rply.rj_why;
289 case RPC_PROGVERSMISMATCH:
290 error->re_vers.low = msg->acpted_rply.ar_vers.low;
291 error->re_vers.high = msg->acpted_rply.ar_vers.high;