/* $NetBSD: rpcb_prot.c,v 1.3 2000/07/14 08:40:42 fvdl Exp $ */ /* * 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 */ /* * Copyright (c) 1986-1991 by Sun Microsystems Inc. */ /* #ident "@(#)rpcb_prot.c 1.13 94/04/24 SMI" */ #if defined(LIBC_SCCS) && !defined(lint) static char sccsid[] = "@(#)rpcb_prot.c 1.9 89/04/21 Copyr 1984 Sun Micro"; #endif #include __FBSDID("$FreeBSD$"); /* * rpcb_prot.c * XDR routines for the rpcbinder version 3. * * Copyright (C) 1984, 1988, Sun Microsystems, Inc. */ #include #include #include #include #include #include bool_t xdr_portmap(XDR *xdrs, struct portmap *regs) { if (xdr_u_long(xdrs, ®s->pm_prog) && xdr_u_long(xdrs, ®s->pm_vers) && xdr_u_long(xdrs, ®s->pm_prot)) return (xdr_u_long(xdrs, ®s->pm_port)); return (FALSE); } bool_t xdr_rpcb(XDR *xdrs, RPCB *objp) { if (!xdr_uint32_t(xdrs, &objp->r_prog)) { return (FALSE); } if (!xdr_uint32_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); } /* * rpcblist_ptr implements a linked list. The RPCL definition from * rpcb_prot.x is: * * struct rpcblist { * rpcb rpcb_map; * struct rpcblist *rpcb_next; * }; * typedef rpcblist *rpcblist_ptr; * * Recall that "pointers" in XDR are encoded as a boolean, indicating whether * there's any data behind the pointer, followed by the data (if any exists). * The boolean can be interpreted as ``more data follows me''; if FALSE then * nothing follows the boolean; if TRUE then the boolean is followed by an * actual struct rpcb, and another rpcblist_ptr (declared in RPCL as "struct * rpcblist *"). * * This could be implemented via the xdr_pointer type, though this would * result in one recursive call per element in the list. Rather than do that * we can ``unwind'' the recursion into a while loop and use xdr_reference to * serialize the rpcb elements. */ bool_t xdr_rpcblist_ptr(XDR *xdrs, rpcblist_ptr *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; int freeing = (xdrs->x_op == XDR_FREE); rpcblist_ptr next; rpcblist_ptr next_copy; next = NULL; for (;;) { 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 && *rp) next = (*rp)->rpcb_next; if (! xdr_reference(xdrs, (caddr_t *)rp, (u_int)sizeof (RPCBLIST), (xdrproc_t)xdr_rpcb)) { return (FALSE); } if (freeing) { next_copy = next; rp = &next_copy; /* * Note that in the subsequent iteration, next_copy * gets nulled out by the xdr_reference * but next itself survives. */ } else if (*rp) { rp = &((*rp)->rpcb_next); } } /*NOTREACHED*/ } #if 0 /* * xdr_rpcblist() is specified to take a RPCBLIST **, but is identical in * functionality to xdr_rpcblist_ptr(). */ bool_t xdr_rpcblist(XDR *xdrs, RPCBLIST **rp) { bool_t dummy; dummy = xdr_rpcblist_ptr(xdrs, (rpcblist_ptr *)rp); return (dummy); } #endif bool_t xdr_rpcb_entry(XDR *xdrs, rpcb_entry *objp) { if (!xdr_string(xdrs, &objp->r_maddr, (u_int)~0)) { return (FALSE); } if (!xdr_string(xdrs, &objp->r_nc_netid, (u_int)~0)) { return (FALSE); } if (!xdr_uint32_t(xdrs, &objp->r_nc_semantics)) { return (FALSE); } if (!xdr_string(xdrs, &objp->r_nc_protofmly, (u_int)~0)) { return (FALSE); } if (!xdr_string(xdrs, &objp->r_nc_proto, (u_int)~0)) { return (FALSE); } return (TRUE); } bool_t xdr_rpcb_entry_list_ptr(XDR *xdrs, rpcb_entry_list_ptr *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; int freeing = (xdrs->x_op == XDR_FREE); rpcb_entry_list_ptr next; rpcb_entry_list_ptr next_copy; next = NULL; for (;;) { 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_entry_next; if (! xdr_reference(xdrs, (caddr_t *)rp, (u_int)sizeof (rpcb_entry_list), (xdrproc_t)xdr_rpcb_entry)) { return (FALSE); } if (freeing && *rp) { next_copy = next; rp = &next_copy; /* * Note that in the subsequent iteration, next_copy * gets nulled out by the xdr_reference * but next itself survives. */ } else if (*rp) { rp = &((*rp)->rpcb_entry_next); } } /*NOTREACHED*/ }