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 #ifdef lint
  78         (void) (xdr_short(xdrs, (short *)ip));
  79         return (xdr_int32(xdrs, (int32_t *)ip));
  80 #else
  81         if (sizeof (uid_t) == sizeof (int32_t)) {
  82                 return (xdr_int(xdrs, (int32_t *)ip));
  83         } else {
  84                 return (xdr_short(xdrs, (short *)ip));
  85         }
  86 #endif
  87 }
  88
  89 /*
  90  * XDR group id types (gid_t)
  91  */
  92 bool_t
  93 xdr_gid_t(XDR *xdrs, gid_t *ip)
  94 {
  95 #ifdef lint
  96         (void) (xdr_short(xdrs, (short *)ip));
  97         return (xdr_int32(xdrs, (int32_t *)ip));
  98 #else
  99         if (sizeof (gid_t) == sizeof (int32_t)) {
 100                 return (xdr_int32(xdrs, (int32_t *)ip));
 101         } else {
 102                 return (xdr_short(xdrs, (short *)ip));
 103         }
 104 #endif
 105 }
 106
 107 /*
 108  * XDR kernel unix auth parameters.
 109  * Goes out of the u struct directly.
 110  * NOTE: this is an XDR_ENCODE only routine.
 111  */
 112 bool_t
 113 xdr_authkern(XDR *xdrs, cred_t *cr)
 114 {
 115         uid_t uid;
 116         gid_t gid;
 117         uint_t len;
 118         caddr_t groups;
 119         char *name = uts_nodename();
 120         time_t now;
 121
 122         if (xdrs->x_op != XDR_ENCODE)
 123                 return (FALSE);
 124
 125         uid = crgetuid(cr);
 126         gid = crgetgid(cr);
 127         len = crgetngroups(cr);
 128
 129         if (len > NGRPS)
 130                 len = NGRPS;
 131
 132         groups = (caddr_t)crgetgroups(cr);
 133         now = gethrestime_sec();
 134         if (xdr_uint32(xdrs, (uint32_t *)&now) &&
 135             xdr_string(xdrs, &name, MAX_MACHINE_NAME) &&
 136             xdr_uid_t(xdrs, &uid) &&
 137             xdr_gid_t(xdrs, &gid) &&
 138             xdr_array(xdrs, &groups, &len, NGRPS, sizeof (gid_t), xdr_gid_t))
 139                 return (TRUE);
 140         return (FALSE);
 141 }
 142
 143 /*
 144  * XDR loopback unix auth parameters.
 145  * NOTE: this is an XDR_ENCODE only routine.
 146  */
 147 bool_t
 148 xdr_authloopback(XDR *xdrs, cred_t *cr)
 149 {
 150         uid_t uid;
 151         gid_t gid;
 152         uint_t len;
 153         caddr_t groups;
 154         char *name = uts_nodename();
 155         time_t now;
 156
 157         if (xdrs->x_op != XDR_ENCODE)
 158                 return (FALSE);
 159
 160         uid = crgetuid(cr);
 161         gid = crgetgid(cr);
 162         len = crgetngroups(cr);
 163         groups = (caddr_t)crgetgroups(cr);
 164         now = gethrestime_sec();
 165         if (xdr_uint32(xdrs, (uint32_t *)&now) &&
 166             xdr_string(xdrs, &name, MAX_MACHINE_NAME) &&
 167             xdr_uid_t(xdrs, &uid) &&
 168             xdr_gid_t(xdrs, &gid) &&
 169             xdr_array(xdrs, &groups, &len, NGROUPS_UMAX, sizeof (gid_t),
 170             xdr_gid_t))
 171                 return (TRUE);
 172         return (FALSE);
 173 }