usr/src/uts/common/rpc/sec/authu_prot.c

   1 /*
   2  * CDDL HEADER START
   3  *
   4  * The contents of this file are subject to the terms of the
   5  * Common Development and Distribution License (the "License").
   6  * You may not use this file except in compliance with the License.
   7  *
   8  * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
   9  * or http://www.opensolaris.org/os/licensing.
  10  * See the License for the specific language governing permissions
  11  * and limitations under the License.
  12  *
  13  * When distributing Covered Code, include this CDDL HEADER in each
  14  * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
  15  * If applicable, add the following below this CDDL HEADER, with the
  16  * fields enclosed by brackets "[]" replaced with your own identifying
  17  * information: Portions Copyright [yyyy] [name of copyright owner]
  18  *
  19  * CDDL HEADER END
  20  */
  21 /*
  22  * Copyright 2009 Sun Microsystems, Inc.  All rights reserved.
  23  * Use is subject to license terms.
  24  */
  25
  26 /*      Copyright (c) 1983, 1984, 1985, 1986, 1987, 1988, 1989 AT&T     */
  27 /*        All Rights Reserved   */
  28
  29 /*
  30  * Portions of this source code were derived from Berkeley 4.3 BSD
  31  * under license from the Regents of the University of California.
  32  */
  33
  34 /*
  35  * authunix_prot.c
  36  * XDR for UNIX style authentication parameters for RPC
  37  */
  38
  39 #include <sys/param.h>
  40 #include <sys/time.h>
  41 #include <sys/cred.h>
  42 #include <sys/proc.h>
  43 #include <sys/user.h>
  44 #include <sys/utsname.h>
  45
  46 #include <rpc/types.h>
  47 #include <rpc/rpc_sztypes.h>
  48 #include <rpc/xdr.h>
  49 #include <rpc/auth.h>
  50 #include <rpc/auth_unix.h>
  51 #include <rpc/clnt.h>
  52
  53 /*
  54  * XDR for unix authentication parameters.
  55  */
  56 bool_t
  57 xdr_authunix_parms(XDR *xdrs, struct authunix_parms *p)
  58 {
  59         if (xdr_u_int(xdrs, &p->aup_time) &&
  60             xdr_string(xdrs, &p->aup_machname, MAX_MACHINE_NAME) &&
  61             xdr_int(xdrs, (int *)&(p->aup_uid)) &&
  62             xdr_int(xdrs, (int *)&(p->aup_gid)) &&
  63             xdr_array(xdrs, (caddr_t *)&(p->aup_gids),
  64             &(p->aup_len), NGRPS, sizeof (int),
  65             (xdrproc_t)xdr_int)) {
  66                 return (TRUE);
  67         }
  68         return (FALSE);
  69 }
  70
  71 /*
  72  * XDR user id types (uid_t)
  73  */
  74 bool_t
  75 xdr_uid_t(XDR *xdrs, uid_t *ip)
  76 {
  77         if (sizeof (uid_t) == sizeof (int32_t)) {
  78                 return (xdr_int(xdrs, (int32_t *)ip));
  79         } else {
  80                 return (xdr_short(xdrs, (short *)ip));
  81         }
  82 }
  83
  84 /*
  85  * XDR group id types (gid_t)
  86  */
  87 bool_t
  88 xdr_gid_t(XDR *xdrs, gid_t *ip)
  89 {
  90         if (sizeof (gid_t) == sizeof (int32_t)) {
  91                 return (xdr_int32(xdrs, (int32_t *)ip));
  92         } else {
  93                 return (xdr_short(xdrs, (short *)ip));
  94         }
  95 }
  96
  97 /*
  98  * XDR kernel unix auth parameters.
  99  * Goes out of the u struct directly.
 100  * NOTE: this is an XDR_ENCODE only routine.
 101  */
 102 bool_t
 103 xdr_authkern(XDR *xdrs, cred_t *cr)
 104 {
 105         uid_t uid;
 106         gid_t gid;
 107         uint_t len;
 108         caddr_t groups;
 109         char *name = uts_nodename();
 110         time_t now;
 111
 112         if (xdrs->x_op != XDR_ENCODE)
 113                 return (FALSE);
 114
 115         uid = crgetuid(cr);
 116         gid = crgetgid(cr);
 117         len = crgetngroups(cr);
 118
 119         if (len > NGRPS)
 120                 len = NGRPS;
 121
 122         groups = (caddr_t)crgetgroups(cr);
 123         now = gethrestime_sec();
 124         if (xdr_uint32(xdrs, (uint32_t *)&now) &&
 125             xdr_string(xdrs, &name, MAX_MACHINE_NAME) &&
 126             xdr_uid_t(xdrs, &uid) &&
 127             xdr_gid_t(xdrs, &gid) &&
 128             xdr_array(xdrs, &groups, &len, NGRPS, sizeof (gid_t), xdr_gid_t))
 129                 return (TRUE);
 130         return (FALSE);
 131 }
 132
 133 /*
 134  * XDR loopback unix auth parameters.
 135  * NOTE: this is an XDR_ENCODE only routine.
 136  */
 137 bool_t
 138 xdr_authloopback(XDR *xdrs, cred_t *cr)
 139 {
 140         uid_t uid;
 141         gid_t gid;
 142         uint_t len;
 143         caddr_t groups;
 144         char *name = uts_nodename();
 145         time_t now;
 146
 147         if (xdrs->x_op != XDR_ENCODE)
 148                 return (FALSE);
 149
 150         uid = crgetuid(cr);
 151         gid = crgetgid(cr);
 152         len = crgetngroups(cr);
 153         groups = (caddr_t)crgetgroups(cr);
 154         now = gethrestime_sec();
 155         if (xdr_uint32(xdrs, (uint32_t *)&now) &&
 156             xdr_string(xdrs, &name, MAX_MACHINE_NAME) &&
 157             xdr_uid_t(xdrs, &uid) &&
 158             xdr_gid_t(xdrs, &gid) &&
 159             xdr_array(xdrs, &groups, &len, NGROUPS_UMAX, sizeof (gid_t),
 160             xdr_gid_t))
 161                 return (TRUE);
 162         return (FALSE);
 163 }