sunrpc/auth_none.c

   1 /*
   2  * Sun RPC is a product of Sun Microsystems, Inc. and is provided for
   3  * unrestricted use provided that this legend is included on all tape
   4  * media and as a part of the software program in whole or part.  Users
   5  * may copy or modify Sun RPC without charge, but are not authorized
   6  * to license or distribute it to anyone else except as part of a product or
   7  * program developed by the user.
   8  *
   9  * SUN RPC IS PROVIDED AS IS WITH NO WARRANTIES OF ANY KIND INCLUDING THE
  10  * WARRANTIES OF DESIGN, MERCHANTIBILITY AND FITNESS FOR A PARTICULAR
  11  * PURPOSE, OR ARISING FROM A COURSE OF DEALING, USAGE OR TRADE PRACTICE.
  12  *
  13  * Sun RPC is provided with no support and without any obligation on the
  14  * part of Sun Microsystems, Inc. to assist in its use, correction,
  15  * modification or enhancement.
  16  *
  17  * SUN MICROSYSTEMS, INC. SHALL HAVE NO LIABILITY WITH RESPECT TO THE
  18  * INFRINGEMENT OF COPYRIGHTS, TRADE SECRETS OR ANY PATENTS BY SUN RPC
  19  * OR ANY PART THEREOF.
  20  *
  21  * In no event will Sun Microsystems, Inc. be liable for any lost revenue
  22  * or profits or other special, indirect and consequential damages, even if
  23  * Sun has been advised of the possibility of such damages.
  24  *
  25  * Sun Microsystems, Inc.
  26  * 2550 Garcia Avenue
  27  * Mountain View, California  94043
  28  */
  29 /*
  30  * Copyright (C) 1984, Sun Microsystems, Inc.
  31  */
  32 /*
  33  * auth_none.c
  34  * Creates a client authentication handle for passing "null"
  35  * credentials and verifiers to remote systems.
  36  */
  37
  38 #include <rpc/rpc.h>
  39 #include <bits/libc-lock.h>
  40
  41 #define MAX_MARSHAL_SIZE 20
  42
  43 /*
  44  * Authenticator operations routines
  45  */
  46 static void authnone_verf (AUTH *);
  47 static void authnone_destroy (AUTH *);
  48 static bool_t authnone_marshal (AUTH *, XDR *);
  49 static bool_t authnone_validate (AUTH *, struct opaque_auth *);
  50 static bool_t authnone_refresh (AUTH *);
  51
  52 static struct auth_ops ops = {
  53   authnone_verf,
  54   authnone_marshal,
  55   authnone_validate,
  56   authnone_refresh,
  57   authnone_destroy
  58 };
  59
  60 /* Internal data and routines */
  61
  62 struct authnone_private_s {
  63   AUTH no_client;
  64   char marshalled_client[MAX_MARSHAL_SIZE];
  65   u_int mcnt;
  66 };
  67
  68 static struct authnone_private_s authnone_private;
  69 __libc_once_define(static, authnone_private_guard);
  70
  71 static void authnone_create_once (void);
  72
  73 static void
  74 authnone_create_once (void)
  75 {
  76   struct authnone_private_s *ap;
  77   XDR xdr_stream;
  78   XDR *xdrs;
  79
  80   ap = &authnone_private;
  81
  82   ap->no_client.ah_cred = ap->no_client.ah_verf = _null_auth;
  83   ap->no_client.ah_ops = &ops;
  84   xdrs = &xdr_stream;
  85   INTUSE(xdrmem_create) (xdrs, ap->marshalled_client,
  86                          (u_int) MAX_MARSHAL_SIZE, XDR_ENCODE);
  87   (void) INTUSE(xdr_opaque_auth) (xdrs, &ap->no_client.ah_cred);
  88   (void) INTUSE(xdr_opaque_auth) (xdrs, &ap->no_client.ah_verf);
  89   ap->mcnt = XDR_GETPOS (xdrs);
  90   XDR_DESTROY (xdrs);
  91 }
  92
  93 AUTH *
  94 authnone_create (void)
  95 {
  96   __libc_once (authnone_private_guard, authnone_create_once);
  97   return &authnone_private.no_client;
  98 }
  99 INTDEF (authnone_create)
 100
 101 static bool_t
 102 authnone_marshal (AUTH *client, XDR *xdrs)
 103 {
 104   struct authnone_private_s *ap;
 105
 106   /* authnone_create returned authnone_private->no_client, which is
 107      the first field of struct authnone_private_s.  */
 108   ap = (struct authnone_private_s *) client;
 109   if (ap == NULL)
 110     return FALSE;
 111   return (*xdrs->x_ops->x_putbytes) (xdrs, ap->marshalled_client, ap->mcnt);
 112 }
 113
 114 static void
 115 authnone_verf (AUTH *auth)
 116 {
 117 }
 118
 119 static bool_t
 120 authnone_validate (AUTH *auth, struct opaque_auth *oa)
 121 {
 122   return TRUE;
 123 }
 124
 125 static bool_t
 126 authnone_refresh (AUTH *auth)
 127 {
 128   return FALSE;
 129 }
 130
 131 static void
 132 authnone_destroy (AUTH *auth)
 133 {
 134 }