1 /* @(#)rpc_prot.c 2.3 88/08/07 4.0 RPCSRC */
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
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8 * program developed by the user.
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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.
28 * Mountain View, California 94043
31 static char sccsid[] = "@(#)rpc_prot.c 1.36 87/08/11 Copyr 1984 Sun Micro";
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.
50 #include <sys/param.h>
55 /* * * * * * * * * * * * * * XDR Authentication * * * * * * * * * * * */
58 * XDR an opaque authentication struct
62 xdr_opaque_auth (XDR *xdrs, 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);
70 libc_hidden_def(xdr_opaque_auth)
76 xdr_des_block (XDR *xdrs, des_block *blkp)
78 return xdr_opaque (xdrs, (caddr_t) blkp, sizeof (des_block));
81 /* * * * * * * * * * * * * * XDR RPC MESSAGE * * * * * * * * * * * * * * * */
84 * XDR the MSG_ACCEPTED part of a reply message union
87 xdr_accepted_reply (XDR *xdrs, struct accepted_reply *ar)
89 /* personalized union, rather than calling xdr_union */
90 if (!xdr_opaque_auth (xdrs, &(ar->ar_verf)))
92 if (!xdr_enum (xdrs, (enum_t *) & (ar->ar_stat)))
97 return ((*(ar->ar_results.proc)) (xdrs, ar->ar_results.where));
99 if (!xdr_u_long (xdrs, &(ar->ar_vers.low)))
101 return (xdr_u_long (xdrs, &(ar->ar_vers.high)));
105 return TRUE; /* TRUE => open ended set of problems */
107 libc_hidden_def(xdr_accepted_reply)
110 * XDR the MSG_DENIED part of a reply message union
113 xdr_rejected_reply (XDR *xdrs, struct rejected_reply *rr)
115 /* personalized union, rather than calling xdr_union */
116 if (!xdr_enum (xdrs, (enum_t *) & (rr->rj_stat)))
121 if (!xdr_u_long (xdrs, &(rr->rj_vers.low)))
123 return xdr_u_long (xdrs, &(rr->rj_vers.high));
126 return xdr_enum (xdrs, (enum_t *) & (rr->rj_why));
130 libc_hidden_def(xdr_rejected_reply)
132 static const struct xdr_discrim reply_dscrm[3] =
134 {(int) MSG_ACCEPTED, (xdrproc_t) xdr_accepted_reply},
135 {(int) MSG_DENIED, (xdrproc_t) xdr_rejected_reply},
136 {__dontcare__, NULL_xdrproc_t}};
139 * XDR a reply message
142 xdr_replymsg (XDR *xdrs, struct rpc_msg *rmsg)
144 if (xdr_u_long (xdrs, &(rmsg->rm_xid)) &&
145 xdr_enum (xdrs, (enum_t *) & (rmsg->rm_direction)) &&
146 (rmsg->rm_direction == REPLY))
147 return xdr_union (xdrs, (enum_t *) & (rmsg->rm_reply.rp_stat),
148 (caddr_t) & (rmsg->rm_reply.ru), reply_dscrm,
152 libc_hidden_def(xdr_replymsg)
156 * Serializes the "static part" of a call message header.
157 * The fields include: rm_xid, rm_direction, rpcvers, prog, and vers.
158 * The rm_xid is not really static, but the user can easily munge on the fly.
161 xdr_callhdr (XDR *xdrs, struct rpc_msg *cmsg)
164 cmsg->rm_direction = CALL;
165 cmsg->rm_call.cb_rpcvers = RPC_MSG_VERSION;
167 (xdrs->x_op == XDR_ENCODE) &&
168 xdr_u_long (xdrs, &(cmsg->rm_xid)) &&
169 xdr_enum (xdrs, (enum_t *) & (cmsg->rm_direction)) &&
170 xdr_u_long (xdrs, &(cmsg->rm_call.cb_rpcvers)) &&
171 xdr_u_long (xdrs, &(cmsg->rm_call.cb_prog)))
172 return xdr_u_long (xdrs, &(cmsg->rm_call.cb_vers));
175 libc_hidden_def(xdr_callhdr)
177 /* ************************** Client utility routine ************* */
180 accepted (enum accept_stat acpt_stat,
181 struct rpc_err *error)
187 error->re_status = RPC_PROGUNAVAIL;
191 error->re_status = RPC_PROGVERSMISMATCH;
195 error->re_status = RPC_PROCUNAVAIL;
199 error->re_status = RPC_CANTDECODEARGS;
203 error->re_status = RPC_SYSTEMERROR;
207 error->re_status = RPC_SUCCESS;
210 /* something's wrong, but we don't know what ... */
211 error->re_status = RPC_FAILED;
212 error->re_lb.s1 = (long) MSG_ACCEPTED;
213 error->re_lb.s2 = (long) acpt_stat;
217 rejected (enum reject_stat rjct_stat,
218 struct rpc_err *error)
223 error->re_status = RPC_VERSMISMATCH;
226 error->re_status = RPC_AUTHERROR;
229 /* something's wrong, but we don't know what ... */
230 error->re_status = RPC_FAILED;
231 error->re_lb.s1 = (long) MSG_DENIED;
232 error->re_lb.s2 = (long) rjct_stat;
238 * given a reply message, fills in the error
241 _seterr_reply (struct rpc_msg *msg,
242 struct rpc_err *error)
244 /* optimized for normal, SUCCESSful case */
245 switch (msg->rm_reply.rp_stat)
248 if (msg->acpted_rply.ar_stat == SUCCESS)
250 error->re_status = RPC_SUCCESS;
253 accepted (msg->acpted_rply.ar_stat, error);
257 rejected (msg->rjcted_rply.rj_stat, error);
261 error->re_status = RPC_FAILED;
262 error->re_lb.s1 = (long) (msg->rm_reply.rp_stat);
265 switch (error->re_status)
268 case RPC_VERSMISMATCH:
269 error->re_vers.low = msg->rjcted_rply.rj_vers.low;
270 error->re_vers.high = msg->rjcted_rply.rj_vers.high;
274 error->re_why = msg->rjcted_rply.rj_why;
277 case RPC_PROGVERSMISMATCH:
278 error->re_vers.low = msg->acpted_rply.ar_vers.low;
279 error->re_vers.high = msg->acpted_rply.ar_vers.high;
285 libc_hidden_def(_seterr_reply)