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/types.h>
  39 #include <rpc/auth.h>
  40
  41 #define MAX_MARSHEL_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 static struct authnone_private
  61 {
  62   AUTH no_client;
  63   char marshalled_client[MAX_MARSHEL_SIZE];
  64   u_int mcnt;
  65 } *authnone_private;
  66
  67 AUTH *
  68 authnone_create (void)
  69 {
  70   struct authnone_private *ap = authnone_private;
  71   XDR xdr_stream;
  72   XDR *xdrs;
  73
  74   if (ap == 0)
  75     {
  76       ap = (struct authnone_private *) calloc (1, sizeof (*ap));
  77       if (ap == 0)
  78         return NULL;
  79       authnone_private = ap;
  80     }
  81   if (!ap->mcnt)
  82     {
  83       ap->no_client.ah_cred = ap->no_client.ah_verf = _null_auth;
  84       ap->no_client.ah_ops = &ops;
  85       xdrs = &xdr_stream;
  86       xdrmem_create (xdrs, ap->marshalled_client, (u_int) MAX_MARSHEL_SIZE,
  87                      XDR_ENCODE);
  88       (void) xdr_opaque_auth (xdrs, &ap->no_client.ah_cred);
  89       (void) xdr_opaque_auth (xdrs, &ap->no_client.ah_verf);
  90       ap->mcnt = XDR_GETPOS (xdrs);
  91       XDR_DESTROY (xdrs);
  92     }
  93   return (&ap->no_client);
  94 }
  95
  96 /*ARGSUSED */
  97 static bool_t
  98 authnone_marshal (AUTH *client, XDR *xdrs)
  99 {
 100   struct authnone_private *ap = authnone_private;
 101
 102   if (ap == 0)
 103     return 0;
 104   return (*xdrs->x_ops->x_putbytes) (xdrs, ap->marshalled_client, ap->mcnt);
 105 }
 106
 107 static void
 108 authnone_verf (AUTH *auth)
 109 {
 110 }
 111
 112 static bool_t
 113 authnone_validate (AUTH *auth, struct opaque_auth *oa)
 114 {
 115   return TRUE;
 116 }
 117
 118 static bool_t
 119 authnone_refresh (AUTH *auth)
 120 {
 121   return FALSE;
 122 }
 123
 124 static void
 125 authnone_destroy (AUTH *auth)
 126 {
 127 }