The Design and Implementation of the FreeBSD Operating System, Second Edition
Now available: The Design and Implementation of the FreeBSD Operating System (Second Edition)


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FreeBSD/Linux Kernel Cross Reference
sys/rpc/auth_none.c

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    1 /*      $NetBSD: auth_none.c,v 1.13 2000/01/22 22:19:17 mycroft Exp $   */
    2 
    3 /*
    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
    6  * media and as a part of the software program in whole or part.  Users
    7  * may copy or modify Sun RPC without charge, but are not authorized
    8  * to license or distribute it to anyone else except as part of a product or
    9  * program developed by the user.
   10  *
   11  * SUN RPC IS PROVIDED AS IS WITH NO WARRANTIES OF ANY KIND INCLUDING THE
   12  * WARRANTIES OF DESIGN, MERCHANTIBILITY AND FITNESS FOR A PARTICULAR
   13  * PURPOSE, OR ARISING FROM A COURSE OF DEALING, USAGE OR TRADE PRACTICE.
   14  *
   15  * Sun RPC is provided with no support and without any obligation on the
   16  * part of Sun Microsystems, Inc. to assist in its use, correction,
   17  * modification or enhancement.
   18  *
   19  * SUN MICROSYSTEMS, INC. SHALL HAVE NO LIABILITY WITH RESPECT TO THE
   20  * INFRINGEMENT OF COPYRIGHTS, TRADE SECRETS OR ANY PATENTS BY SUN RPC
   21  * OR ANY PART THEREOF.
   22  *
   23  * In no event will Sun Microsystems, Inc. be liable for any lost revenue
   24  * or profits or other special, indirect and consequential damages, even if
   25  * Sun has been advised of the possibility of such damages.
   26  *
   27  * Sun Microsystems, Inc.
   28  * 2550 Garcia Avenue
   29  * Mountain View, California  94043
   30  */
   31 
   32 #if defined(LIBC_SCCS) && !defined(lint)
   33 static char *sccsid2 = "@(#)auth_none.c 1.19 87/08/11 Copyr 1984 Sun Micro";
   34 static char *sccsid = "@(#)auth_none.c  2.1 88/07/29 4.0 RPCSRC";
   35 #endif
   36 #include <sys/cdefs.h>
   37 __FBSDID("$FreeBSD: releng/8.3/sys/rpc/auth_none.c 199583 2009-11-20 15:27:52Z jhb $");
   38 
   39 /*
   40  * auth_none.c
   41  * Creates a client authentication handle for passing "null"
   42  * credentials and verifiers to remote systems.
   43  *
   44  * Copyright (C) 1984, Sun Microsystems, Inc.
   45  */
   46 
   47 #include <sys/param.h>
   48 #include <sys/systm.h>
   49 #include <sys/kernel.h>
   50 #include <sys/lock.h>
   51 #include <sys/malloc.h>
   52 #include <sys/mutex.h>
   53 
   54 #include <rpc/types.h>
   55 #include <rpc/xdr.h>
   56 #include <rpc/auth.h>
   57 #include <rpc/clnt.h>
   58 
   59 #define MAX_MARSHAL_SIZE 20
   60 
   61 /*
   62  * Authenticator operations routines
   63  */
   64 
   65 static bool_t authnone_marshal (AUTH *, uint32_t, XDR *, struct mbuf *);
   66 static void authnone_verf (AUTH *);
   67 static bool_t authnone_validate (AUTH *, uint32_t, struct opaque_auth *,
   68     struct mbuf **);
   69 static bool_t authnone_refresh (AUTH *, void *);
   70 static void authnone_destroy (AUTH *);
   71 
   72 static struct auth_ops authnone_ops = {
   73         .ah_nextverf =          authnone_verf,
   74         .ah_marshal =           authnone_marshal,
   75         .ah_validate =          authnone_validate,
   76         .ah_refresh =           authnone_refresh,
   77         .ah_destroy =           authnone_destroy,
   78 };
   79 
   80 struct authnone_private {
   81         AUTH    no_client;
   82         char    mclient[MAX_MARSHAL_SIZE];
   83         u_int   mcnt;
   84 };
   85 
   86 static struct authnone_private authnone_private;
   87 
   88 static void
   89 authnone_init(void *dummy)
   90 {
   91         struct authnone_private *ap = &authnone_private;
   92         XDR xdrs;
   93 
   94         ap->no_client.ah_cred = ap->no_client.ah_verf = _null_auth;
   95         ap->no_client.ah_ops = &authnone_ops;
   96         xdrmem_create(&xdrs, ap->mclient, MAX_MARSHAL_SIZE, XDR_ENCODE);
   97         xdr_opaque_auth(&xdrs, &ap->no_client.ah_cred);
   98         xdr_opaque_auth(&xdrs, &ap->no_client.ah_verf);
   99         ap->mcnt = XDR_GETPOS(&xdrs);
  100         XDR_DESTROY(&xdrs);
  101 }
  102 SYSINIT(authnone_init, SI_SUB_KMEM, SI_ORDER_ANY, authnone_init, NULL);
  103 
  104 AUTH *
  105 authnone_create()
  106 {
  107         struct authnone_private *ap = &authnone_private;
  108 
  109         return (&ap->no_client);
  110 }
  111 
  112 /*ARGSUSED*/
  113 static bool_t
  114 authnone_marshal(AUTH *client, uint32_t xid, XDR *xdrs, struct mbuf *args)
  115 {
  116         struct authnone_private *ap = &authnone_private;
  117 
  118         KASSERT(xdrs != NULL, ("authnone_marshal: xdrs is null"));
  119 
  120         if (!XDR_PUTBYTES(xdrs, ap->mclient, ap->mcnt))
  121                 return (FALSE);
  122 
  123         xdrmbuf_append(xdrs, args);
  124 
  125         return (TRUE);
  126 }
  127 
  128 /* All these unused parameters are required to keep ANSI-C from grumbling */
  129 /*ARGSUSED*/
  130 static void
  131 authnone_verf(AUTH *client)
  132 {
  133 }
  134 
  135 /*ARGSUSED*/
  136 static bool_t
  137 authnone_validate(AUTH *client, uint32_t xid, struct opaque_auth *opaque,
  138     struct mbuf **mrepp)
  139 {
  140 
  141         return (TRUE);
  142 }
  143 
  144 /*ARGSUSED*/
  145 static bool_t
  146 authnone_refresh(AUTH *client, void *dummy)
  147 {
  148 
  149         return (FALSE);
  150 }
  151 
  152 /*ARGSUSED*/
  153 static void
  154 authnone_destroy(AUTH *client)
  155 {
  156 }

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