initial import
[glibc.git] / sunrpc / rpc_prot.c
blob4b1319ad560ff37a3b2865b8516f4ddc5d47736a
1 /* @(#)rpc_prot.c 2.3 88/08/07 4.0 RPCSRC */
2 /*
3 * Sun RPC is a product of Sun Microsystems, Inc. and is provided for
4 * unrestricted use provided that this legend is included on all tape
5 * media and as a part of the software program in whole or part. Users
6 * may copy or modify Sun RPC without charge, but are not authorized
7 * to license or distribute it to anyone else except as part of a product or
8 * program developed by the user.
9 *
10 * SUN RPC IS PROVIDED AS IS WITH NO WARRANTIES OF ANY KIND INCLUDING THE
11 * WARRANTIES OF DESIGN, MERCHANTIBILITY AND FITNESS FOR A PARTICULAR
12 * PURPOSE, OR ARISING FROM A COURSE OF DEALING, USAGE OR TRADE PRACTICE.
14 * Sun RPC is provided with no support and without any obligation on the
15 * part of Sun Microsystems, Inc. to assist in its use, correction,
16 * modification or enhancement.
18 * SUN MICROSYSTEMS, INC. SHALL HAVE NO LIABILITY WITH RESPECT TO THE
19 * INFRINGEMENT OF COPYRIGHTS, TRADE SECRETS OR ANY PATENTS BY SUN RPC
20 * OR ANY PART THEREOF.
22 * In no event will Sun Microsystems, Inc. be liable for any lost revenue
23 * or profits or other special, indirect and consequential damages, even if
24 * Sun has been advised of the possibility of such damages.
26 * Sun Microsystems, Inc.
27 * 2550 Garcia Avenue
28 * Mountain View, California 94043
30 #if !defined(lint) && defined(SCCSIDS)
31 static char sccsid[] = "@(#)rpc_prot.c 1.36 87/08/11 Copyr 1984 Sun Micro";
32 #endif
35 * rpc_prot.c
37 * Copyright (C) 1984, Sun Microsystems, Inc.
39 * This set of routines implements the rpc message definition,
40 * its serializer and some common rpc utility routines.
41 * The routines are meant for various implementations of rpc -
42 * they are NOT for the rpc client or rpc service implementations!
43 * Because authentication stuff is easy and is part of rpc, the opaque
44 * routines are also in this program.
47 #include <sys/param.h>
49 #include <rpc/rpc.h>
51 /* * * * * * * * * * * * * * XDR Authentication * * * * * * * * * * * */
53 struct opaque_auth _null_auth;
56 * XDR an opaque authentication struct
57 * (see auth.h)
59 bool_t
60 xdr_opaque_auth(xdrs, ap)
61 register XDR *xdrs;
62 register struct opaque_auth *ap;
65 if (xdr_enum(xdrs, &(ap->oa_flavor)))
66 return (xdr_bytes(xdrs, &ap->oa_base,
67 &ap->oa_length, MAX_AUTH_BYTES));
68 return (FALSE);
72 * XDR a DES block
74 bool_t
75 xdr_des_block(xdrs, blkp)
76 register XDR *xdrs;
77 register des_block *blkp;
79 return (xdr_opaque(xdrs, (caddr_t)blkp, sizeof(des_block)));
82 /* * * * * * * * * * * * * * XDR RPC MESSAGE * * * * * * * * * * * * * * * */
85 * XDR the MSG_ACCEPTED part of a reply message union
87 bool_t
88 xdr_accepted_reply(xdrs, ar)
89 register XDR *xdrs;
90 register struct accepted_reply *ar;
93 /* personalized union, rather than calling xdr_union */
94 if (! xdr_opaque_auth(xdrs, &(ar->ar_verf)))
95 return (FALSE);
96 if (! xdr_enum(xdrs, (enum_t *)&(ar->ar_stat)))
97 return (FALSE);
98 switch (ar->ar_stat) {
100 case SUCCESS:
101 return ((*(ar->ar_results.proc))(xdrs, ar->ar_results.where));
103 case PROG_MISMATCH:
104 if (! xdr_u_long(xdrs, &(ar->ar_vers.low)))
105 return (FALSE);
106 return (xdr_u_long(xdrs, &(ar->ar_vers.high)));
108 return (TRUE); /* TRUE => open ended set of problems */
112 * XDR the MSG_DENIED part of a reply message union
114 bool_t
115 xdr_rejected_reply(xdrs, rr)
116 register XDR *xdrs;
117 register struct rejected_reply *rr;
120 /* personalized union, rather than calling xdr_union */
121 if (! xdr_enum(xdrs, (enum_t *)&(rr->rj_stat)))
122 return (FALSE);
123 switch (rr->rj_stat) {
125 case RPC_MISMATCH:
126 if (! xdr_u_long(xdrs, &(rr->rj_vers.low)))
127 return (FALSE);
128 return (xdr_u_long(xdrs, &(rr->rj_vers.high)));
130 case AUTH_ERROR:
131 return (xdr_enum(xdrs, (enum_t *)&(rr->rj_why)));
133 return (FALSE);
136 static struct xdr_discrim reply_dscrm[3] = {
137 { (int)MSG_ACCEPTED, xdr_accepted_reply },
138 { (int)MSG_DENIED, xdr_rejected_reply },
139 { __dontcare__, NULL_xdrproc_t } };
142 * XDR a reply message
144 bool_t
145 xdr_replymsg(xdrs, rmsg)
146 register XDR *xdrs;
147 register struct rpc_msg *rmsg;
149 if (
150 xdr_u_long(xdrs, &(rmsg->rm_xid)) &&
151 xdr_enum(xdrs, (enum_t *)&(rmsg->rm_direction)) &&
152 (rmsg->rm_direction == REPLY) )
153 return (xdr_union(xdrs, (enum_t *)&(rmsg->rm_reply.rp_stat),
154 (caddr_t)&(rmsg->rm_reply.ru), reply_dscrm, NULL_xdrproc_t));
155 return (FALSE);
160 * Serializes the "static part" of a call message header.
161 * The fields include: rm_xid, rm_direction, rpcvers, prog, and vers.
162 * The rm_xid is not really static, but the user can easily munge on the fly.
164 bool_t
165 xdr_callhdr(xdrs, cmsg)
166 register XDR *xdrs;
167 register struct rpc_msg *cmsg;
170 cmsg->rm_direction = CALL;
171 cmsg->rm_call.cb_rpcvers = RPC_MSG_VERSION;
172 if (
173 (xdrs->x_op == XDR_ENCODE) &&
174 xdr_u_long(xdrs, &(cmsg->rm_xid)) &&
175 xdr_enum(xdrs, (enum_t *)&(cmsg->rm_direction)) &&
176 xdr_u_long(xdrs, &(cmsg->rm_call.cb_rpcvers)) &&
177 xdr_u_long(xdrs, &(cmsg->rm_call.cb_prog)) )
178 return (xdr_u_long(xdrs, &(cmsg->rm_call.cb_vers)));
179 return (FALSE);
182 /* ************************** Client utility routine ************* */
184 static void
185 accepted(acpt_stat, error)
186 register enum accept_stat acpt_stat;
187 register struct rpc_err *error;
190 switch (acpt_stat) {
192 case PROG_UNAVAIL:
193 error->re_status = RPC_PROGUNAVAIL;
194 return;
196 case PROG_MISMATCH:
197 error->re_status = RPC_PROGVERSMISMATCH;
198 return;
200 case PROC_UNAVAIL:
201 error->re_status = RPC_PROCUNAVAIL;
202 return;
204 case GARBAGE_ARGS:
205 error->re_status = RPC_CANTDECODEARGS;
206 return;
208 case SYSTEM_ERR:
209 error->re_status = RPC_SYSTEMERROR;
210 return;
212 case SUCCESS:
213 error->re_status = RPC_SUCCESS;
214 return;
216 /* something's wrong, but we don't know what ... */
217 error->re_status = RPC_FAILED;
218 error->re_lb.s1 = (long)MSG_ACCEPTED;
219 error->re_lb.s2 = (long)acpt_stat;
222 static void
223 rejected(rjct_stat, error)
224 register enum reject_stat rjct_stat;
225 register struct rpc_err *error;
228 switch (rjct_stat) {
230 case RPC_VERSMISMATCH:
231 error->re_status = RPC_VERSMISMATCH;
232 return;
234 case AUTH_ERROR:
235 error->re_status = RPC_AUTHERROR;
236 return;
238 /* something's wrong, but we don't know what ... */
239 error->re_status = RPC_FAILED;
240 error->re_lb.s1 = (long)MSG_DENIED;
241 error->re_lb.s2 = (long)rjct_stat;
245 * given a reply message, fills in the error
247 void
248 _seterr_reply(msg, error)
249 register struct rpc_msg *msg;
250 register struct rpc_err *error;
253 /* optimized for normal, SUCCESSful case */
254 switch (msg->rm_reply.rp_stat) {
256 case MSG_ACCEPTED:
257 if (msg->acpted_rply.ar_stat == SUCCESS) {
258 error->re_status = RPC_SUCCESS;
259 return;
261 accepted(msg->acpted_rply.ar_stat, error);
262 break;
264 case MSG_DENIED:
265 rejected(msg->rjcted_rply.rj_stat, error);
266 break;
268 default:
269 error->re_status = RPC_FAILED;
270 error->re_lb.s1 = (long)(msg->rm_reply.rp_stat);
271 break;
273 switch (error->re_status) {
275 case RPC_VERSMISMATCH:
276 error->re_vers.low = msg->rjcted_rply.rj_vers.low;
277 error->re_vers.high = msg->rjcted_rply.rj_vers.high;
278 break;
280 case RPC_AUTHERROR:
281 error->re_why = msg->rjcted_rply.rj_why;
282 break;
284 case RPC_PROGVERSMISMATCH:
285 error->re_vers.low = msg->acpted_rply.ar_vers.low;
286 error->re_vers.high = msg->acpted_rply.ar_vers.high;
287 break;