/*************************************************************************** * * File Name: rpcbpro.c * * Copyright (C) 1993-1996 Hewlett-Packard Company. * All rights reserved. * * 11311 Chinden Blvd. * Boise, Idaho 83714 * * This is a part of the HP JetAdmin Printer Utility * * This source code is only intended as a supplement for support and * localization of HP JetAdmin by 3rd party Operating System vendors. * Modification of source code cannot be made without the express written * consent of Hewlett-Packard. * * * Description: * * Author: Name * * * Modification history: * * date initials change description * * mm-dd-yy MJB * * * * * * ***************************************************************************/ /* * 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 or with the express written consent of * Sun Microsystems, Inc. * * 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 */ /* * rpcb_prot.c * XDR routines for the rpcbinder version 3. * * Copyright (C) 1984, 1988, Sun Microsystems, Inc. */ #include "rpsyshdr.h" #include "rpcsvc.h" #include "rpctypes.h" #include "rpcxdr.h" #include "rpcbpro.h" #include "rpcbext.h" #include "xdrext.h" bool_t xdr_rpcb( XDR *xdrs, RPCB *objp) { if (!xdr_prog_t(xdrs, &objp->r_prog)) { return (FALSE); } if (!xdr_vers_t(xdrs, &objp->r_vers)) { return (FALSE); } if (!xdr_string(xdrs, &objp->r_netid, (u_int)~0)) { return (FALSE); } if (!xdr_string(xdrs, &objp->r_addr, (u_int)~0)) { return (FALSE); } if (!xdr_string(xdrs, &objp->r_owner, (u_int)~0)) { return (FALSE); } return (TRUE); } /* * What is going on with linked lists? (!) * First recall the link list declaration from rpc_prot.h: * * struct rpcblist { * RPCB rpcb_map; * struct rpcblist *rpcb_next * }; * * Compare that declaration with a corresponding xdr declaration that * is (a) pointer-less, and (b) recursive: * * typedef union switch (bool_t) { * * case TRUE: struct { * struct rpcb; * rpcblist_t foo; * }; * * case FALSE: struct {}; * } rpcblist_t; * * Notice that the xdr declaration has no nxt pointer while * the C declaration has no bool_t variable. The bool_t can be * interpreted as ``more data follows me''; if FALSE then nothing * follows this bool_t; if TRUE then the bool_t is followed by * an actual struct rpcb, and then (recursively) by the * xdr union, rpcblist_t. * * This could be implemented via the xdr_union primitive, though this * would cause a one recursive call per element in the list. Rather than do * that we can ``unwind'' the recursion * into a while loop and do the union arms in-place. * * The head of the list is what the C programmer wishes to past around * the net, yet is the data that the pointer points to which is interesting; * this sounds like a job for xdr_reference! */ /* * And this one encodes and decode the tli version of the mappings. */ bool_t xdr_rpcblist( register XDR *xdrs, register RPCBLIST **rp) { /* * more_elements is pre-computed in case the direction is * XDR_ENCODE or XDR_FREE. more_elements is overwritten by * xdr_bool when the direction is XDR_DECODE. */ bool_t more_elements; register int freeing = (xdrs->x_op == XDR_FREE); register RPCBLIST **next; while (TRUE) { more_elements = (bool_t)(*rp != NULL); if (! xdr_bool(xdrs, &more_elements)) return (FALSE); if (! more_elements) return (TRUE); /* we are done */ /* * the unfortunate side effect of non-recursion is that in * the case of freeing we must remember the next object * before we free the current object ... */ if (freeing) next = &((*rp)->rpcb_next); if (! xdr_reference(xdrs, (caddr_t *)rp, (u_int)sizeof (RPCBLIST), xdr_rpcb)) return (FALSE); rp = (freeing) ? next : &((*rp)->rpcb_next); } } /* * XDR remote call arguments * written for XDR_ENCODE direction only */ bool_t xdr_rpcb_rmtcallargs( XDR *xdrs, struct rpcb_rmtcallargs *objp) { uint32 lenposition, argposition, position; if (!xdr_prog_t(xdrs, &objp->prog)) { return (FALSE); } if (!xdr_vers_t(xdrs, &objp->vers)) { return (FALSE); } if (!xdr_proc_t(xdrs, &objp->proc)) { return (FALSE); } /* * All the jugglery for just getting the size of the arguments */ lenposition = XDR_GETPOS(xdrs); if (! xdr_u_long(xdrs, &(objp->arglen))) return (FALSE); argposition = XDR_GETPOS(xdrs); if (! (*(objp->xdr_args))(xdrs, objp->args_ptr)) return (FALSE); position = XDR_GETPOS(xdrs); objp->arglen = position - argposition; XDR_SETPOS(xdrs, lenposition); if (! xdr_u_long(xdrs, &(objp->arglen))) return (FALSE); XDR_SETPOS(xdrs, position); return (TRUE); } /* * XDR remote call results * written for XDR_DECODE direction only */ bool_t xdr_rpcb_rmtcallres( XDR *xdrs, struct rpcb_rmtcallres *objp) { if (!xdr_string(xdrs, &objp->addr_ptr, (u_int)~0)) { return (FALSE); } if (!xdr_u_long(xdrs, &objp->resultslen)) { return (FALSE); } return ((*(objp->xdr_results))(xdrs, objp->results_ptr)); } bool_t xdr_netbuf( XDR *xdrs, struct netbuf *objp) { if (!xdr_u_int(xdrs, &objp->maxlen)) { return (FALSE); } return (xdr_bytes(xdrs, (char **)&(objp->buf), (u_int *)&(objp->len), objp->maxlen)); }