1 /*
   2  * Copyright (c) 2002 Damien Miller.  All rights reserved.
   3  *
   4  * Redistribution and use in source and binary forms, with or without
   5  * modification, are permitted provided that the following conditions
   6  * are met:
   7  * 1. Redistributions of source code must retain the above copyright
   8  *    notice, this list of conditions and the following disclaimer.
   9  * 2. Redistributions in binary form must reproduce the above copyright
  10  *    notice, this list of conditions and the following disclaimer in the
  11  *    documentation and/or other materials provided with the distribution.
  12  *
  13  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
  14  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
  15  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
  16  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
  17  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
  18  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  19  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  20  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  21  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
  22  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  23  */
  24 
  25 /*
  26  * Copyright 2007 Sun Microsystems, Inc.  All rights reserved.
  27  * Use is subject to license terms.
  28  */
  29 
  30 #include "includes.h"
  31 
  32 RCSID("$Id: bsd-getpeereid.c,v 1.1 2002/09/12 00:33:02 djm Exp $");
  33 
  34 #pragma ident   "%Z%%M% %I%     %E% SMI"
  35 
  36 #if !defined(HAVE_GETPEEREID)
  37 
  38 #if defined(SO_PEERCRED)
  39 int
  40 getpeereid(int s, uid_t *euid, gid_t *gid)
  41 {
  42         struct ucred cred;
  43         size_t len = sizeof(cred);
  44 
  45         if (getsockopt(s, SOL_SOCKET, SO_PEERCRED, &cred, &len) < 0)
  46                 return (-1);
  47         *euid = cred.uid;
  48         *gid = cred.gid;
  49 
  50         return (0);
  51 }
  52 #elif defined(HAVE_GETPEERUCRED)
  53 int
  54 getpeereid(int s, uid_t *euid, gid_t *gid)
  55 {
  56         ucred_t *ucred = NULL;
  57 
  58         if (getpeerucred(s, &ucred) == -1)
  59                 return (-1);
  60         if ((*euid = ucred_geteuid(ucred)) == (uid_t)-1)
  61                 return (-1);
  62         if ((*gid = ucred_getrgid(ucred)) == (gid_t)-1)
  63                 return (-1);
  64 
  65         ucred_free(ucred);
  66 
  67         return (0);
  68 }
  69 #else
  70 int
  71 getpeereid(int s, uid_t *euid, gid_t *gid)
  72 {
  73         *euid = geteuid();
  74         *gid = getgid();
  75 
  76         return (0);
  77 }
  78 #endif /* defined(SO_PEERCRED) */
  79 
  80 #endif /* !defined(HAVE_GETPEEREID) */