diff options
Diffstat (limited to 'cpukit/librpc/src/rpc/rpc_prot.c')
| -rw-r--r-- | cpukit/librpc/src/rpc/rpc_prot.c | 336 |
1 files changed, 336 insertions, 0 deletions
diff --git a/cpukit/librpc/src/rpc/rpc_prot.c b/cpukit/librpc/src/rpc/rpc_prot.c new file mode 100644 index 0000000000..0718c9a990 --- /dev/null +++ b/cpukit/librpc/src/rpc/rpc_prot.c @@ -0,0 +1,336 @@ +/* + * 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 + */ + +#if defined(LIBC_SCCS) && !defined(lint) +/*static char *sccsid = "from: @(#)rpc_prot.c 1.36 87/08/11 Copyr 1984 Sun Micro";*/ +/*static char *sccsid = "from: @(#)rpc_prot.c 2.3 88/08/07 4.0 RPCSRC";*/ +static char *rcsid = "$FreeBSD: src/lib/libc/rpc/rpc_prot.c,v 1.8 1999/08/28 00:00:46 peter Exp $"; +#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. + */ + +#ifdef HAVE_CONFIG_H +#include "config.h" +#endif + +#include <assert.h> +#include <sys/param.h> + +#include <rpc/rpc.h> + +static void accepted(enum accept_stat, struct rpc_err *); +static void rejected(enum reject_stat, struct rpc_err *); + +/* * * * * * * * * * * * * * XDR Authentication * * * * * * * * * * * */ + +extern struct opaque_auth _null_auth; + +/* + * XDR an opaque authentication struct + * (see auth.h) + */ +bool_t +xdr_opaque_auth( + XDR *xdrs, + struct opaque_auth *ap) +{ + + assert(xdrs != NULL); + assert(ap != NULL); + + 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 block + */ +bool_t +xdr_des_block( + XDR *xdrs, + des_block *blkp) +{ + + assert(xdrs != NULL); + assert(blkp != NULL); + + return (xdr_opaque(xdrs, (caddr_t)blkp, sizeof(des_block))); +} + +/* * * * * * * * * * * * * * XDR RPC MESSAGE * * * * * * * * * * * * * * * */ + +/* + * XDR the MSG_ACCEPTED part of a reply message union + */ +bool_t +xdr_accepted_reply( + XDR *xdrs, + 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 *)(void *)&(ar->ar_stat))) + return (FALSE); + switch (ar->ar_stat) { + + case SUCCESS: + return ((*(ar->ar_results.proc))(xdrs, ar->ar_results.where)); + + case PROG_MISMATCH: + if (! xdr_u_int32_t(xdrs, &(ar->ar_vers.low))) + return (FALSE); + return (xdr_u_int32_t(xdrs, &(ar->ar_vers.high))); + + case GARBAGE_ARGS: + case SYSTEM_ERR: + case PROC_UNAVAIL: + case PROG_UNAVAIL: + break; + } + return (TRUE); /* TRUE => open ended set of problems */ +} + +/* + * XDR the MSG_DENIED part of a reply message union + */ +bool_t +xdr_rejected_reply( + XDR *xdrs, + struct rejected_reply *rr ) +{ + + /* personalized union, rather than calling xdr_union */ + if (! xdr_enum(xdrs, (enum_t *)(void *)&(rr->rj_stat))) + return (FALSE); + switch (rr->rj_stat) { + + case RPC_MISMATCH: + if (! xdr_u_int32_t(xdrs, &(rr->rj_vers.low))) + return (FALSE); + return (xdr_u_int32_t(xdrs, &(rr->rj_vers.high))); + + case AUTH_ERROR: + return (xdr_enum(xdrs, (enum_t *)(void *)&(rr->rj_why))); + } + return (FALSE); +} + +static const struct xdr_discrim reply_dscrm[3] = { + { (int)MSG_ACCEPTED, (xdrproc_t)xdr_accepted_reply }, + { (int)MSG_DENIED, (xdrproc_t)xdr_rejected_reply }, + { __dontcare__, NULL_xdrproc_t } }; + +/* + * XDR a reply message + */ +bool_t +xdr_replymsg( + XDR *xdrs, + struct rpc_msg *rmsg) +{ + if ( + xdr_u_int32_t(xdrs, &(rmsg->rm_xid)) && + xdr_enum(xdrs, (enum_t *)(void *)&(rmsg->rm_direction)) && + (rmsg->rm_direction == REPLY) ) + return (xdr_union(xdrs, (enum_t *)(void *)&(rmsg->rm_reply.rp_stat), + (caddr_t)&(rmsg->rm_reply.ru), reply_dscrm, NULL_xdrproc_t)); + 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( + XDR *xdrs, + struct rpc_msg *cmsg) +{ + + cmsg->rm_direction = CALL; + cmsg->rm_call.cb_rpcvers = RPC_MSG_VERSION; + if ( + (xdrs->x_op == XDR_ENCODE) && + xdr_u_int32_t(xdrs, &(cmsg->rm_xid)) && + xdr_enum(xdrs, (enum_t *)(void *)&(cmsg->rm_direction)) && + xdr_u_int32_t(xdrs, &(cmsg->rm_call.cb_rpcvers)) && + xdr_u_int32_t(xdrs, &(cmsg->rm_call.cb_prog)) ) + return (xdr_u_int32_t(xdrs, &(cmsg->rm_call.cb_vers))); + return (FALSE); +} + +/* ************************** Client utility routine ************* */ + +static void +accepted( + enum accept_stat acpt_stat, + struct rpc_err *error) +{ + + assert(error != NULL); + + 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 SUCCESS: + error->re_status = RPC_SUCCESS; + return; + } + /* something's wrong, but we don't know what ... */ + error->re_status = RPC_FAILED; + error->re_lb.s1 = (int32_t)MSG_ACCEPTED; + error->re_lb.s2 = (int32_t)acpt_stat; +} + +static void +rejected( + enum reject_stat rjct_stat, + struct rpc_err *error) +{ + + assert(error != NULL); + + switch (rjct_stat) { + case RPC_MISMATCH: + 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 = (int32_t)MSG_DENIED; + error->re_lb.s2 = (int32_t)rjct_stat; +} + +/* + * given a reply message, fills in the error + */ +void +_seterr_reply( + struct rpc_msg *msg, + struct rpc_err *error) +{ + + assert(msg != NULL); + assert(error != NULL); + + /* optimized for normal, SUCCESSful case */ + switch (msg->rm_reply.rp_stat) { + + case MSG_ACCEPTED: + if (msg->acpted_rply.ar_stat == SUCCESS) { + 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 = (int32_t)(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; + + case RPC_FAILED: + case RPC_SUCCESS: + case RPC_PROGNOTREGISTERED: + case RPC_PMAPFAILURE: + case RPC_UNKNOWNPROTO: + case RPC_UNKNOWNHOST: + case RPC_SYSTEMERROR: + case RPC_CANTDECODEARGS: + case RPC_PROCUNAVAIL: + case RPC_PROGUNAVAIL: + case RPC_TIMEDOUT: + case RPC_CANTRECV: + case RPC_CANTSEND: + case RPC_CANTDECODERES: + case RPC_CANTENCODEARGS: + default: + break; + } +} |