/* * * =================================== * HARP | Host ATM Research Platform * =================================== * * * This Host ATM Research Platform ("HARP") file (the "Software") is * made available by Network Computing Services, Inc. ("NetworkCS") * "AS IS". NetworkCS does not provide maintenance, improvements or * support of any kind. * * NETWORKCS MAKES NO WARRANTIES OR REPRESENTATIONS, EXPRESS OR IMPLIED, * INCLUDING, BUT NOT LIMITED TO, IMPLIED WARRANTIES OF MERCHANTABILITY * AND FITNESS FOR A PARTICULAR PURPOSE, AS TO ANY ELEMENT OF THE * SOFTWARE OR ANY SUPPORT PROVIDED IN CONNECTION WITH THIS SOFTWARE. * In no event shall NetworkCS be responsible for any damages, including * but not limited to consequential damages, arising from or relating to * any use of the Software or related support. * * Copyright 1994-1998 Network Computing Services, Inc. * * Copies of this Software may be made, however, the above copyright * notice must be reproduced on all copies. * * @(#) $FreeBSD$ * */ /* * SPANS Signalling Manager * --------------------------- * * Kernel XDR (External Data Representation) routines * */ #include #include #include #include #include #ifndef lint __RCSID("@(#) $FreeBSD$"); #endif /* * This file contains code that has been copied and/or modified from * the following FreeBSD files: * * /usr/src/lib/libc/xdr/xdr.c * /usr/src/lib/libc/xdr/xdr_mem.c * * which are covered by the copyright notice below. */ /* * 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: @(#)xdr.c 1.35 87/08/12";*/ /*static char *sccsid = "from: @(#)xdr.c 2.1 88/07/29 4.0 RPCSRC";*/ /*static char *rcsid = "Id: xdr.c,v 1.2.4.2 1996/06/05 02:52:02 jkh Exp";*/ #endif /* * xdr.c, Generic XDR routines implementation. * * Copyright (C) 1986, Sun Microsystems, Inc. * * These are the "generic" xdr routines used to serialize and de-serialize * most common data items. See xdr.h for more info on the interface to * xdr. */ #include #include /* * constants specific to the xdr "protocol" */ #define XDR_FALSE ((long) 0) #define XDR_TRUE ((long) 1) #define LASTUNSIGNED ((u_int) 0-1) /* * for unit alignment */ static char xdr_zero[BYTES_PER_XDR_UNIT] = { 0, 0, 0, 0 }; /* * XDR integers */ bool_t xdr_int(xdrs, ip) XDR *xdrs; int *ip; { #ifdef lint (void) (xdr_short(xdrs, (short *)ip)); return (xdr_long(xdrs, (long *)ip)); #else if (sizeof (int) == sizeof (long)) { return (xdr_long(xdrs, (long *)ip)); } else { return (xdr_short(xdrs, (short *)ip)); } #endif } /* * XDR unsigned integers */ bool_t xdr_u_int(xdrs, up) XDR *xdrs; u_int *up; { #ifdef lint (void) (xdr_short(xdrs, (short *)up)); return (xdr_u_long(xdrs, (u_long *)up)); #else if (sizeof (u_int) == sizeof (u_long)) { return (xdr_u_long(xdrs, (u_long *)up)); } else { return (xdr_short(xdrs, (short *)up)); } #endif } /* * XDR long integers * same as xdr_u_long - open coded to save a proc call! */ bool_t xdr_long(xdrs, lp) register XDR *xdrs; long *lp; { if (xdrs->x_op == XDR_ENCODE) return (XDR_PUTLONG(xdrs, lp)); if (xdrs->x_op == XDR_DECODE) return (XDR_GETLONG(xdrs, lp)); if (xdrs->x_op == XDR_FREE) return (TRUE); return (FALSE); } /* * XDR unsigned long integers * same as xdr_long - open coded to save a proc call! */ bool_t xdr_u_long(xdrs, ulp) register XDR *xdrs; u_long *ulp; { if (xdrs->x_op == XDR_DECODE) return (XDR_GETLONG(xdrs, (long *)ulp)); if (xdrs->x_op == XDR_ENCODE) return (XDR_PUTLONG(xdrs, (long *)ulp)); if (xdrs->x_op == XDR_FREE) return (TRUE); return (FALSE); } /* * XDR short integers */ bool_t xdr_short(xdrs, sp) register XDR *xdrs; short *sp; { long l; switch (xdrs->x_op) { case XDR_ENCODE: l = (long) *sp; return (XDR_PUTLONG(xdrs, &l)); case XDR_DECODE: if (!XDR_GETLONG(xdrs, &l)) { return (FALSE); } *sp = (short) l; return (TRUE); case XDR_FREE: return (TRUE); } return (FALSE); } /* * XDR unsigned short integers */ bool_t xdr_u_short(xdrs, usp) register XDR *xdrs; u_short *usp; { u_long l; switch (xdrs->x_op) { case XDR_ENCODE: l = (u_long) *usp; return (XDR_PUTLONG(xdrs, &l)); case XDR_DECODE: if (!XDR_GETLONG(xdrs, &l)) { return (FALSE); } *usp = (u_short) l; return (TRUE); case XDR_FREE: return (TRUE); } return (FALSE); } /* * XDR a char */ bool_t xdr_char(xdrs, cp) XDR *xdrs; char *cp; { int i; i = (*cp); if (!xdr_int(xdrs, &i)) { return (FALSE); } *cp = i; return (TRUE); } /* * XDR an unsigned char */ bool_t xdr_u_char(xdrs, cp) XDR *xdrs; u_char *cp; { u_int u; u = (*cp); if (!xdr_u_int(xdrs, &u)) { return (FALSE); } *cp = u; return (TRUE); } /* * XDR booleans */ bool_t xdr_bool(xdrs, bp) register XDR *xdrs; bool_t *bp; { long lb; switch (xdrs->x_op) { case XDR_ENCODE: lb = *bp ? XDR_TRUE : XDR_FALSE; return (XDR_PUTLONG(xdrs, &lb)); case XDR_DECODE: if (!XDR_GETLONG(xdrs, &lb)) { return (FALSE); } *bp = (lb == XDR_FALSE) ? FALSE : TRUE; return (TRUE); case XDR_FREE: return (TRUE); } return (FALSE); } /* * XDR enumerations */ bool_t xdr_enum(xdrs, ep) XDR *xdrs; enum_t *ep; { #ifndef lint enum sizecheck { SIZEVAL }; /* used to find the size of an enum */ /* * enums are treated as ints */ if (sizeof (enum sizecheck) == sizeof (long)) { return (xdr_long(xdrs, (long *)ep)); } else if (sizeof (enum sizecheck) == sizeof (short)) { return (xdr_short(xdrs, (short *)ep)); } else { return (FALSE); } #else (void) (xdr_short(xdrs, (short *)ep)); return (xdr_long(xdrs, (long *)ep)); #endif } /* * XDR opaque data * Allows the specification of a fixed size sequence of opaque bytes. * cp points to the opaque object and cnt gives the byte length. */ bool_t xdr_opaque(xdrs, cp, cnt) register XDR *xdrs; caddr_t cp; register u_int cnt; { register u_int rndup; static char crud[BYTES_PER_XDR_UNIT]; /* * if no data we are done */ if (cnt == 0) return (TRUE); /* * round byte count to full xdr units */ rndup = cnt % BYTES_PER_XDR_UNIT; if (rndup > 0) rndup = BYTES_PER_XDR_UNIT - rndup; if (xdrs->x_op == XDR_DECODE) { if (!XDR_GETBYTES(xdrs, cp, cnt)) { return (FALSE); } if (rndup == 0) return (TRUE); return (XDR_GETBYTES(xdrs, crud, rndup)); } if (xdrs->x_op == XDR_ENCODE) { if (!XDR_PUTBYTES(xdrs, cp, cnt)) { return (FALSE); } if (rndup == 0) return (TRUE); return (XDR_PUTBYTES(xdrs, xdr_zero, rndup)); } if (xdrs->x_op == XDR_FREE) { return (TRUE); } return (FALSE); } /* * XDR implementation using kernel buffers */ #if defined(LIBC_SCCS) && !defined(lint) /*static char *sccsid = "from: @(#)xdr_mem.c 1.19 87/08/11 Copyr 1984 Sun Micro";*/ /*static char *sccsid = "from: @(#)xdr_mem.c 2.1 88/07/29 4.0 RPCSRC";*/ /*static char *rcsid = "Id: xdr_mem.c,v 1.2.4.2 1996/06/05 02:52:04 jkh Exp";*/ #endif /* * xdr_mem.h, XDR implementation using memory buffers. * * Copyright (C) 1984, Sun Microsystems, Inc. * * If you have some data to be interpreted as external data representation * or to be converted to external data representation in a memory buffer, * then this is the package for you. * */ void xdrmbuf_init(XDR *, KBuffer *, enum xdr_op); static bool_t xdrmbuf_getlong(XDR *, long *); static bool_t xdrmbuf_putlong(XDR *, const long *); static bool_t xdrmbuf_getbytes(XDR *, char *, u_int); static bool_t xdrmbuf_putbytes(XDR *, const char *, u_int); static u_int xdrmbuf_getpos(XDR *); static struct xdr_ops xdrmbuf_ops = { xdrmbuf_getlong, xdrmbuf_putlong, xdrmbuf_getbytes, xdrmbuf_putbytes, xdrmbuf_getpos, NULL, NULL, NULL }; /* * The procedure xdrmbuf_init initializes a stream descriptor for a * kernel buffer. */ void xdrmbuf_init(xdrs, m, op) register XDR *xdrs; KBuffer *m; enum xdr_op op; { xdrs->x_op = op; xdrs->x_ops = &xdrmbuf_ops; xdrs->x_base = (caddr_t)m; KB_DATASTART(m, xdrs->x_private, caddr_t); xdrs->x_handy = KB_LEN(m); } static bool_t xdrmbuf_getlong(xdrs, lp) register XDR *xdrs; long *lp; { /* * See if long is contained in this buffer */ if ((xdrs->x_handy -= sizeof(long)) < 0) { register KBuffer *m; /* * We (currently) don't allow a long to span a buffer */ if (xdrs->x_handy != -sizeof(long)) { printf("xdrmbuf_getlong: data spans buffers\n"); return (FALSE); } /* * Try to move to a chained buffer */ if ((m = (KBuffer *)(xdrs->x_base)) != NULL) { m = KB_NEXT(m); xdrs->x_base = (caddr_t)m; } if (m) { /* * Setup new buffer's info */ KB_DATASTART(m, xdrs->x_private, caddr_t); if ((xdrs->x_handy = KB_LEN(m) - sizeof(long)) < 0) { printf("xdrmbuf_getlong: short buffer\n"); return (FALSE); } } else { /* * No more buffers */ return (FALSE); } } /* * Return the long value */ *lp = (long)ntohl((u_long)(*((long *)(xdrs->x_private)))); /* * Advance the data stream */ ((long *)xdrs->x_private)++; return (TRUE); } static bool_t xdrmbuf_putlong(xdrs, lp) register XDR *xdrs; const long *lp; { /* * See if long will fit in this buffer */ if ((xdrs->x_handy -= sizeof(long)) < 0) { register KBuffer *m; /* * We (currently) don't allow a long to span a buffer */ if (xdrs->x_handy != -sizeof(long)) { printf("xdrmbuf_putlong: data spans buffers\n"); return (FALSE); } /* * Try to move to a chained buffer */ if ((m = (KBuffer *)(xdrs->x_base)) != NULL) { m = KB_NEXT(m); xdrs->x_base = (caddr_t)m; } if (m) { /* * Setup new buffer's info */ KB_DATASTART(m, xdrs->x_private, caddr_t); if ((xdrs->x_handy = KB_LEN(m) - sizeof(long)) < 0) { printf("xdrmbuf_putlong: short buffer\n"); return (FALSE); } } else { /* * No more buffers */ return (FALSE); } } /* * Store the long value into our buffer */ *(long *)xdrs->x_private = (long)htonl((u_long)(*lp)); /* * Advance the data stream */ ((long *)xdrs->x_private)++; return (TRUE); } static bool_t xdrmbuf_getbytes(xdrs, addr, len) register XDR *xdrs; caddr_t addr; register u_int len; { while (len > 0) { u_int copy; if (xdrs->x_handy <= 0) { register KBuffer *m; /* * No data in current buffer, move to a chained buffer */ if ((m = (KBuffer *)(xdrs->x_base)) != NULL) { m = KB_NEXT(m); xdrs->x_base = (caddr_t)m; } if (m) { /* * Setup new buffer's info */ KB_DATASTART(m, xdrs->x_private, caddr_t); xdrs->x_handy = KB_LEN(m); } else { /* * No more buffers */ return (FALSE); } } /* * Copy from buffer to user's space */ copy = MIN(len, xdrs->x_handy); bcopy(xdrs->x_private, addr, copy); /* * Update data stream controls */ ((char *)xdrs->x_private) += copy; xdrs->x_handy -= copy; addr += copy; len -= copy; } return (TRUE); } static bool_t xdrmbuf_putbytes(xdrs, addr, len) register XDR *xdrs; const char *addr; register u_int len; { while (len > 0) { u_int copy; if (xdrs->x_handy <= 0) { register KBuffer *m; /* * No data in current buffer, move to a chained buffer */ if ((m = (KBuffer *)(xdrs->x_base)) != NULL) { m = KB_NEXT(m); xdrs->x_base = (caddr_t)m; } if (m) { /* * Setup new buffer's info */ KB_DATASTART(m, xdrs->x_private, caddr_t); xdrs->x_handy = KB_LEN(m); } else { /* * No more buffers */ return (FALSE); } } /* * Copy from user's space into buffer */ copy = MIN(len, xdrs->x_handy); bcopy(addr, xdrs->x_private, copy); /* * Update data stream controls */ ((char *)xdrs->x_private)++; xdrs->x_handy -= copy; addr += copy; len -= copy; } return (TRUE); } static u_int xdrmbuf_getpos(xdrs) register XDR *xdrs; { return ((u_int)xdrs->x_private - (u_int)xdrs->x_base); }