1 /* $NetBSD: authunix_prot.c,v 1.12 2000/01/22 22:19:17 mycroft Exp $ */
4 * Sun RPC is a product of Sun Microsystems, Inc. and is provided for
5 * unrestricted use provided that this legend is included on all tape
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17 * modification or enhancement.
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20 * INFRINGEMENT OF COPYRIGHTS, TRADE SECRETS OR ANY PATENTS BY SUN RPC
21 * OR ANY PART THEREOF.
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29 * Mountain View, California 94043
32 #if defined(LIBC_SCCS) && !defined(lint)
33 static char *sccsid2 = "@(#)authunix_prot.c 1.15 87/08/11 Copyr 1984 Sun Micro";
34 static char *sccsid = "@(#)authunix_prot.c 2.1 88/07/29 4.0 RPCSRC";
36 #include <sys/cdefs.h>
37 __FBSDID("$FreeBSD$");
41 * XDR for UNIX style authentication parameters for RPC
43 * Copyright (C) 1984, Sun Microsystems, Inc.
46 #include <sys/param.h>
47 #include <sys/kernel.h>
49 #include <sys/mutex.h>
50 #include <sys/systm.h>
51 #include <sys/ucred.h>
52 #include <sys/vimage.h>
54 #include <rpc/types.h>
58 #include <rpc/rpc_com.h>
60 /* gids compose part of a credential; there may not be more than 16 of them */
64 * XDR for unix authentication parameters.
67 xdr_authunix_parms(XDR *xdrs, uint32_t *time, struct xucred *cred)
72 INIT_VPROCG(TD_TO_VPROCG(&thread0)); /* XXX revisit - fixme! */
74 mtx_lock(&hostname_mtx);
75 if (xdrs->x_op == XDR_ENCODE) {
77 * Restrict name length to 255 according to RFC 1057.
79 namelen = strlen(V_hostname);
87 if (!xdr_uint32_t(xdrs, time)
88 || !xdr_uint32_t(xdrs, &namelen))
92 * Ignore the hostname on decode.
94 if (xdrs->x_op == XDR_ENCODE) {
95 if (!xdr_opaque(xdrs, V_hostname, namelen))
98 xdr_setpos(xdrs, xdr_getpos(xdrs) + RNDUP(namelen));
100 mtx_unlock(&hostname_mtx);
102 if (!xdr_uint32_t(xdrs, &cred->cr_uid))
104 if (!xdr_uint32_t(xdrs, &cred->cr_groups[0]))
107 if (xdrs->x_op == XDR_ENCODE) {
108 ngroups = cred->cr_ngroups - 1;
113 if (!xdr_uint32_t(xdrs, &ngroups))
115 for (i = 0; i < ngroups; i++) {
116 if (i + 1 < NGROUPS) {
117 if (!xdr_uint32_t(xdrs, &cred->cr_groups[i + 1]))
120 if (!xdr_uint32_t(xdrs, &junk))
125 if (xdrs->x_op == XDR_DECODE) {
126 if (ngroups + 1 > NGROUPS)
127 cred->cr_ngroups = NGROUPS;
129 cred->cr_ngroups = ngroups + 1;