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- /*
- * Sun RPC is a product of Sun Microsystems, Inc. and is provided for
- * unrestricted use provided that this legend is included on all tape
- * media and as a part of the software program in whole or part. Users
- * may copy or modify Sun RPC without charge, but are not authorized
- * to license or distribute it to anyone else except as part of a product or
- * program developed by the user.
- *
- * SUN RPC IS PROVIDED AS IS WITH NO WARRANTIES OF ANY KIND INCLUDING THE
- * WARRANTIES OF DESIGN, MERCHANTIBILITY AND FITNESS FOR A PARTICULAR
- * PURPOSE, OR ARISING FROM A COURSE OF DEALING, USAGE OR TRADE PRACTICE.
- *
- * Sun RPC is provided with no support and without any obligation on the
- * part of Sun Microsystems, Inc. to assist in its use, correction,
- * modification or enhancement.
- *
- * SUN MICROSYSTEMS, INC. SHALL HAVE NO LIABILITY WITH RESPECT TO THE
- * INFRINGEMENT OF COPYRIGHTS, TRADE SECRETS OR ANY PATENTS BY SUN RPC
- * OR ANY PART THEREOF.
- *
- * In no event will Sun Microsystems, Inc. be liable for any lost revenue
- * or profits or other special, indirect and consequential damages, even if
- * Sun has been advised of the possibility of such damages.
- *
- * Sun Microsystems, Inc.
- * 2550 Garcia Avenue
- * Mountain View, California 94043
- */
- #ifndef lint
- static char sccsid[] = "@(#)rpc_prot.c 1.1 86/02/03 Copyr 1984 Sun Micro";
- #endif
-
- /*
- * rpc_prot.c
- *
- * Copyright (C) 1984, Sun Microsystems, Inc.
- *
- * This set of routines implements the rpc message definition,
- * its serializer and some common rpc utility routines.
- * The routines are meant for various implementations of rpc -
- * they are NOT for the rpc client or rpc service implementations!
- * Because authentication stuff is easy and is part of rpc, the opaque
- * routines are also in this program.
- */
-
- #include <stdio.h>
- #include <malloc.h> /* needed for MS C Compiler */
- /* #include <sys/param.h> */ /* removed by See-Mong Tan */
- #include "types.h"
- #include "xdr.h"
- #include "auth.h"
- #include "clnt.h"
- #include "rpc_msg.h"
- #include "in.h"
-
- /* * * * * * * * * * * * * * XDR Authentication * * * * * * * * * * * */
-
- struct opaque_auth _null_auth;
-
- /*
- * XDR an opaque authentication struct
- * (see auth.h)
- */
- bool_t
- xdr_opaque_auth(xdrs, ap)
- register XDR *xdrs;
- register struct opaque_auth *ap;
- {
-
- if (xdr_enum(xdrs, &(ap->oa_flavor)))
- return (xdr_bytes(xdrs, &ap->oa_base,
- &ap->oa_length, MAX_AUTH_BYTES));
- return (FALSE);
- }
-
- /*
- * XDR a DES key.
- */
- bool_t
- xdr_deskey(xdrs, blkp)
- register XDR *xdrs;
- register union des_block *blkp;
- {
-
- if (! xdr_u_long(xdrs, &(blkp->key.high)))
- return (FALSE);
- return (xdr_u_long(xdrs, &(blkp->key.low)));
- }
-
- /* * * * * * * * * * * * * * XDR RPC MESSAGE * * * * * * * * * * * * * * * */
-
- /*
- * XDR the MSG_ACCEPTED part of a reply message union
- */
- bool_t
- xdr_accepted_reply(xdrs, ar)
- register XDR *xdrs;
- register struct accepted_reply *ar;
- {
-
- /* personalized union, rather than calling xdr_union */
- if (! xdr_opaque_auth(xdrs, &(ar->ar_verf)))
- return (FALSE);
- if (! xdr_enum(xdrs, (enum_t *)&(ar->ar_stat)))
- return (FALSE);
- switch (ar->ar_stat) {
-
- case SUCCESS1:
- return ((*(ar->ar_results.proc))(xdrs, ar->ar_results.where));
-
- case PROG_MISMATCH:
- if (! xdr_u_long(xdrs, &(ar->ar_vers.low)))
- return (FALSE);
- return (xdr_u_long(xdrs, &(ar->ar_vers.high)));
- }
- return (TRUE); /* TRUE => open ended set of problems */
- }
-
- /*
- * XDR the MSG_DENIED part of a reply message union
- */
- bool_t
- xdr_rejected_reply(xdrs, rr)
- register XDR *xdrs;
- register struct rejected_reply *rr;
- {
-
- /* personalized union, rather than calling xdr_union */
- if (! xdr_enum(xdrs, (enum_t *)&(rr->rj_stat)))
- return (FALSE);
- switch (rr->rj_stat) {
-
- case RPC_MISMATCH:
- if (! xdr_u_long(xdrs, &(rr->rj_vers.low)))
- return (FALSE);
- return (xdr_u_long(xdrs, &(rr->rj_vers.high)));
-
- case AUTH_ERROR:
- return (xdr_enum(xdrs, (enum_t *)&(rr->rj_why)));
- }
- return (FALSE);
- }
-
- #define RNDUP(x) ((((x) + BYTES_PER_XDR_UNIT - 1) / BYTES_PER_XDR_UNIT) \
- * BYTES_PER_XDR_UNIT)
-
- static struct xdr_discrim reply_dscrm[3] = {
- { (int)MSG_ACCEPTED, xdr_accepted_reply },
- { (int)MSG_DENIED, xdr_rejected_reply },
- { __dontcare__, NULL_xdrproc_t } };
-
- /*
- * XDR a reply message
- */
- bool_t
- xdr_replymsg(xdrs, rmsg)
- XDR *xdrs;
- struct rpc_msg *rmsg;
- {
- long far *buf;
- struct accepted_reply *ar;
- struct opaque_auth *oa;
-
- if (xdrs->x_op == XDR_ENCODE &&
- rmsg->rm_reply.rp_stat == MSG_ACCEPTED &&
- rmsg->rm_direction == REPLY &&
- (buf = XDR_INLINE(xdrs, 6 * BYTES_PER_XDR_UNIT +
- rmsg->rm_reply.rp_acpt.ar_verf.oa_length)) != NULL) {
- IXDR_PUT_LONG(buf, rmsg->rm_xid);
- IXDR_PUT_ENUM(buf, rmsg->rm_direction);
- IXDR_PUT_ENUM(buf, rmsg->rm_reply.rp_stat);
- ar = &rmsg->rm_reply.rp_acpt;
- oa = &ar->ar_verf;
- IXDR_PUT_ENUM(buf, oa->oa_flavor);
- IXDR_PUT_LONG(buf, oa->oa_length);
- if (oa->oa_length) {
- bcopy_nf(oa->oa_base, buf, oa->oa_length);
- buf += (oa->oa_length +
- BYTES_PER_XDR_UNIT - 1) /
- sizeof (long);
- }
- /*
- * stat and rest of reply, copied from xdr_accepted_reply
- */
- IXDR_PUT_ENUM(buf, ar->ar_stat);
- switch (ar->ar_stat) {
-
- case SUCCESS1:
- return ((*(ar->ar_results.proc))
- (xdrs, ar->ar_results.where));
-
- case PROG_MISMATCH:
- if (! xdr_u_long(xdrs, &(ar->ar_vers.low)))
- return (FALSE);
- return (xdr_u_long(xdrs, &(ar->ar_vers.high)));
- }
- return (TRUE);
- }
- if (xdrs->x_op == XDR_DECODE &&
- (buf = XDR_INLINE(xdrs, 3 * BYTES_PER_XDR_UNIT)) != NULL) {
- rmsg->rm_xid = IXDR_GET_LONG(buf);
- rmsg->rm_direction = IXDR_GET_ENUM(buf, enum msg_type);
- if (rmsg->rm_direction != REPLY) {
- return (FALSE);
- }
- rmsg->rm_reply.rp_stat = IXDR_GET_ENUM(buf, enum reply_stat);
- if (rmsg->rm_reply.rp_stat != MSG_ACCEPTED) {
- if (rmsg->rm_reply.rp_stat == MSG_DENIED) {
- return (xdr_rejected_reply(xdrs,
- &rmsg->rm_reply.rp_rjct));
- }
- return (FALSE);
- }
- ar = &rmsg->rm_reply.rp_acpt;
- oa = &ar->ar_verf;
- buf = XDR_INLINE(xdrs, 2 * BYTES_PER_XDR_UNIT);
- if (buf != NULL) {
- oa->oa_flavor = IXDR_GET_ENUM(buf, enum_t);
- oa->oa_length = IXDR_GET_LONG(buf);
- } else {
- if (xdr_enum(xdrs, &oa->oa_flavor) == FALSE ||
- xdr_u_int(xdrs, &oa->oa_length) == FALSE) {
- return (FALSE);
- }
- }
- if (oa->oa_length) {
- if (oa->oa_length > MAX_AUTH_BYTES) {
- return (FALSE);
- }
- if (oa->oa_base == NULL) {
- oa->oa_base = (caddr_t)
- mem_alloc(oa->oa_length);
- }
- buf = XDR_INLINE(xdrs, RNDUP(oa->oa_length));
- if (buf == NULL) {
- if (xdr_opaque(xdrs, oa->oa_base,
- oa->oa_length) == FALSE) {
- return (FALSE);
- }
- } else {
- bcopy_fn(buf, oa->oa_base, oa->oa_length);
- /* no real need....
- buf += RNDUP(oa->oa_length) / sizeof (long);
- */
- }
- }
- /*
- * stat and rest of reply, copied from
- * xdr_accepted_reply
- */
- xdr_enum(xdrs, &ar->ar_stat);
- switch (ar->ar_stat) {
-
- case SUCCESS1:
- return ((*(ar->ar_results.proc))
- (xdrs, ar->ar_results.where));
-
- case PROG_MISMATCH:
- if (! xdr_u_long(xdrs, &(ar->ar_vers.low)))
- return (FALSE);
- return (xdr_u_long(xdrs, &(ar->ar_vers.high)));
- }
- return (TRUE);
- }
- if (
- xdr_u_long(xdrs, &(rmsg->rm_xid)) &&
- xdr_enum(xdrs, (enum_t *)&(rmsg->rm_direction)) &&
- (rmsg->rm_direction == REPLY) )
- return (xdr_union(xdrs, (enum_t *)&(rmsg->rm_reply.rp_stat),
- (caddr_t)&(rmsg->rm_reply.ru), reply_dscrm, NULL_xdrproc_t));
- return (FALSE);
- }
-
- /*
- * XDR a call message
- */
- bool_t
- xdr_callmsg(xdrs, cmsg)
- register XDR *xdrs;
- register struct rpc_msg *cmsg;
- {
- register long far *buf;
- register struct opaque_auth *oa;
-
- if (xdrs->x_op == XDR_ENCODE) {
- if (cmsg->rm_call.cb_cred.oa_length > MAX_AUTH_BYTES) {
- return (FALSE);
- }
- if (cmsg->rm_call.cb_verf.oa_length > MAX_AUTH_BYTES) {
- return (FALSE);
- }
- buf = XDR_INLINE(xdrs, 8 * BYTES_PER_XDR_UNIT
- + RNDUP(cmsg->rm_call.cb_cred.oa_length)
- + 2 * BYTES_PER_XDR_UNIT
- + RNDUP(cmsg->rm_call.cb_verf.oa_length));
- if (buf != NULL) {
- IXDR_PUT_LONG(buf, cmsg->rm_xid);
- IXDR_PUT_ENUM(buf, cmsg->rm_direction);
- if (cmsg->rm_direction != CALL) {
- return (FALSE);
- }
- IXDR_PUT_LONG(buf, cmsg->rm_call.cb_rpcvers);
- if (cmsg->rm_call.cb_rpcvers != RPC_MSG_VERSION) {
- return (FALSE);
- }
- IXDR_PUT_LONG(buf, cmsg->rm_call.cb_prog);
- IXDR_PUT_LONG(buf, cmsg->rm_call.cb_vers);
- IXDR_PUT_LONG(buf, cmsg->rm_call.cb_proc);
- oa = &cmsg->rm_call.cb_cred;
- IXDR_PUT_ENUM(buf, oa->oa_flavor);
- IXDR_PUT_LONG(buf, oa->oa_length);
- if (oa->oa_length) {
- bcopy_nf(oa->oa_base, buf, oa->oa_length);
- buf += RNDUP(oa->oa_length) / sizeof (long);
- }
- oa = &cmsg->rm_call.cb_verf;
- IXDR_PUT_ENUM(buf, oa->oa_flavor);
- IXDR_PUT_LONG(buf, oa->oa_length);
- if (oa->oa_length) {
- bcopy_nf(oa->oa_base, buf, oa->oa_length);
- /* no real need....
- buf += RNDUP(oa->oa_length) / sizeof (long);
- */
- }
- return (TRUE);
- }
- }
- if (xdrs->x_op == XDR_DECODE) {
- buf = XDR_INLINE(xdrs, 8 * BYTES_PER_XDR_UNIT);
- if (buf != NULL) {
- cmsg->rm_xid = IXDR_GET_LONG(buf);
- cmsg->rm_direction = IXDR_GET_ENUM(buf, enum msg_type);
- if (cmsg->rm_direction != CALL) {
- return (FALSE);
- }
- cmsg->rm_call.cb_rpcvers = IXDR_GET_LONG(buf);
- if (cmsg->rm_call.cb_rpcvers != RPC_MSG_VERSION) {
- return (FALSE);
- }
- cmsg->rm_call.cb_prog = IXDR_GET_LONG(buf);
- cmsg->rm_call.cb_vers = IXDR_GET_LONG(buf);
- cmsg->rm_call.cb_proc = IXDR_GET_LONG(buf);
-
- oa = &cmsg->rm_call.cb_cred;
- oa->oa_flavor = IXDR_GET_ENUM(buf, enum_t);
- oa->oa_length = IXDR_GET_LONG(buf);
- if (oa->oa_length) {
- if (oa->oa_length > MAX_AUTH_BYTES) {
- return (FALSE);
- }
- if (oa->oa_base == NULL) {
- oa->oa_base = (caddr_t)
- mem_alloc(oa->oa_length);
- }
- buf = XDR_INLINE(xdrs, RNDUP(oa->oa_length));
- if (buf == NULL) {
- if (xdr_opaque(xdrs, oa->oa_base,
- oa->oa_length) == FALSE) {
- return (FALSE);
- }
- } else {
- bcopy_fn(buf, oa->oa_base, oa->oa_length);
- /* no real need....
- buf += RNDUP(oa->oa_length) /
- sizeof (long);
- */
- }
- }
- oa = &cmsg->rm_call.cb_verf;
- buf = XDR_INLINE(xdrs, 2 * BYTES_PER_XDR_UNIT);
- if (buf == NULL) {
- if (xdr_enum(xdrs, &oa->oa_flavor) == FALSE ||
- xdr_u_int(xdrs, &oa->oa_length) == FALSE) {
- return (FALSE);
- }
- } else {
- oa->oa_flavor = IXDR_GET_ENUM(buf, enum_t);
- oa->oa_length = IXDR_GET_LONG(buf);
- }
- if (oa->oa_length) {
- if (oa->oa_length > MAX_AUTH_BYTES) {
- return (FALSE);
- }
- if (oa->oa_base == NULL) {
- oa->oa_base = (caddr_t)
- mem_alloc(oa->oa_length);
- }
- buf = XDR_INLINE(xdrs, RNDUP(oa->oa_length));
- if (buf == NULL) {
- if (xdr_opaque(xdrs, oa->oa_base,
- oa->oa_length) == FALSE) {
- return (FALSE);
- }
- } else {
- bcopy_fn(buf, oa->oa_base, oa->oa_length);
- /* no real need...
- buf += RNDUP(oa->oa_length) /
- sizeof (long);
- */
- }
- }
- return (TRUE);
- }
- }
- if (
- xdr_u_long(xdrs, &(cmsg->rm_xid)) &&
- xdr_enum(xdrs, (enum_t *)&(cmsg->rm_direction)) &&
- (cmsg->rm_direction == CALL) &&
- xdr_u_long(xdrs, &(cmsg->rm_call.cb_rpcvers)) &&
- (cmsg->rm_call.cb_rpcvers == RPC_MSG_VERSION) &&
- xdr_u_long(xdrs, &(cmsg->rm_call.cb_prog)) &&
- xdr_u_long(xdrs, &(cmsg->rm_call.cb_vers)) &&
- xdr_u_long(xdrs, &(cmsg->rm_call.cb_proc)) &&
- xdr_opaque_auth(xdrs, &(cmsg->rm_call.cb_cred)) )
- return (xdr_opaque_auth(xdrs, &(cmsg->rm_call.cb_verf)));
- return (FALSE);
- }
-
- /*
- * Serializes the "static part" of a call message header.
- * The fields include: rm_xid, rm_direction, rpcvers, prog, and vers.
- * The rm_xid is not really static, but the user can easily munge on the fly.
- */
- bool_t
- xdr_callhdr(xdrs, cmsg)
- register XDR *xdrs;
- register struct rpc_msg *cmsg;
- {
-
- cmsg->rm_direction = CALL;
- cmsg->rm_call.cb_rpcvers = RPC_MSG_VERSION;
- if (
- (xdrs->x_op == XDR_ENCODE) &&
- xdr_u_long(xdrs, &(cmsg->rm_xid)) &&
- xdr_enum(xdrs, (enum_t *)&(cmsg->rm_direction)) &&
- xdr_u_long(xdrs, &(cmsg->rm_call.cb_rpcvers)) &&
- xdr_u_long(xdrs, &(cmsg->rm_call.cb_prog)) )
- return (xdr_u_long(xdrs, &(cmsg->rm_call.cb_vers)));
- return (FALSE);
- }
-
- /* ************************** Client utility routine ************* */
-
- static void
- accepted(acpt_stat, error)
- register enum accept_stat acpt_stat;
- register struct rpc_err *error;
- {
-
- switch (acpt_stat) {
-
- case PROG_UNAVAIL:
- error->re_status = RPC_PROGUNAVAIL;
- return;
-
- case PROG_MISMATCH:
- error->re_status = RPC_PROGVERSMISMATCH;
- return;
-
- case PROC_UNAVAIL:
- error->re_status = RPC_PROCUNAVAIL;
- return;
-
- case GARBAGE_ARGS:
- error->re_status = RPC_CANTDECODEARGS;
- return;
-
- case SYSTEM_ERR:
- error->re_status = RPC_SYSTEMERROR;
- return;
-
- case SUCCESS1:
- error->re_status = RPC_SUCCESS;
- return;
- }
- /* something's wrong, but we don't know what ... */
- error->re_status = RPC_FAILED;
- error->re_lb.s1 = (long)MSG_ACCEPTED;
- error->re_lb.s2 = (long)acpt_stat;
- }
-
- static void
- rejected(rjct_stat, error)
- register enum reject_stat rjct_stat;
- register struct rpc_err *error;
- {
-
- switch (rjct_stat) {
-
- case RPC_VERSMISMATCH:
- error->re_status = RPC_VERSMISMATCH;
- return;
-
- case AUTH_ERROR:
- error->re_status = RPC_AUTHERROR;
- return;
- }
- /* something's wrong, but we don't know what ... */
- error->re_status = RPC_FAILED;
- error->re_lb.s1 = (long)MSG_DENIED;
- error->re_lb.s2 = (long)rjct_stat;
- }
-
- /*
- * given a reply message, fills in the error
- */
- void
- _seterr_reply(msg, error)
- register struct rpc_msg *msg;
- register struct rpc_err *error;
- {
-
- /* optimized for normal, SUCCESSful case */
- switch (msg->rm_reply.rp_stat) {
-
- case MSG_ACCEPTED:
- if (msg->acpted_rply.ar_stat == SUCCESS1) {
- error->re_status = RPC_SUCCESS;
- return;
- };
- accepted(msg->acpted_rply.ar_stat, error);
- break;
-
- case MSG_DENIED:
- rejected(msg->rjcted_rply.rj_stat, error);
- break;
-
- default:
- error->re_status = RPC_FAILED;
- error->re_lb.s1 = (long)(msg->rm_reply.rp_stat);
- break;
- }
- switch (error->re_status) {
-
- case RPC_VERSMISMATCH:
- error->re_vers.low = msg->rjcted_rply.rj_vers.low;
- error->re_vers.high = msg->rjcted_rply.rj_vers.high;
- break;
-
- case RPC_AUTHERROR:
- error->re_why = msg->rjcted_rply.rj_why;
- break;
-
- case RPC_PROGVERSMISMATCH:
- error->re_vers.low = msg->acpted_rply.ar_vers.low;
- error->re_vers.high = msg->acpted_rply.ar_vers.high;
- break;
- }
- }
-