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
  40 #define MAX_MARSHEL_SIZE 20
  41
  42 /*
  43  * Authenticator operations routines
  44  */
  45 static void authnone_verf (AUTH *);
  46 static void authnone_destroy (AUTH *);
  47 static bool_t authnone_marshal (AUTH *, XDR *);
  48 static bool_t authnone_validate (AUTH *, struct opaque_auth *);
  49 static bool_t authnone_refresh (AUTH *);
  50
  51 static struct auth_ops ops = {
  52   authnone_verf,
  53   authnone_marshal,
  54   authnone_validate,
  55   authnone_refresh,
  56   authnone_destroy
  57 };
  58
  59 struct authnone_private_s {
  60   AUTH no_client;
  61   char marshalled_client[MAX_MARSHEL_SIZE];
  62   u_int mcnt;
  63 };
  64 #ifdef _RPC_THREAD_SAFE_
  65 #define authnone_private ((struct authnone_private_ *)RPC_THREAD_VARIABLE(authnone_private_s))
  66 #else
  67 static struct authnone_private_s *authnone_private;
  68 #endif
  69
  70 AUTH *
  71 authnone_create (void)
  72 {
  73   struct authnone_private_s *ap;
  74   XDR xdr_stream;
  75   XDR *xdrs;
  76
  77   ap = (struct authnone_private_s *) authnone_private;
  78   if (ap == NULL)
  79     {
  80       ap = (struct authnone_private_s *) calloc (1, sizeof (*ap));
  81       if (ap == NULL)
  82         return NULL;
  83       authnone_private = ap;
  84     }
  85   if (!ap->mcnt)
  86     {
  87       ap->no_client.ah_cred = ap->no_client.ah_verf = _null_auth;
  88       ap->no_client.ah_ops = &ops;
  89       xdrs = &xdr_stream;
  90       xdrmem_create (xdrs, ap->marshalled_client, (u_int) MAX_MARSHEL_SIZE,
  91                      XDR_ENCODE);
  92       (void) xdr_opaque_auth (xdrs, &ap->no_client.ah_cred);
  93       (void) xdr_opaque_auth (xdrs, &ap->no_client.ah_verf);
  94       ap->mcnt = XDR_GETPOS (xdrs);
  95       XDR_DESTROY (xdrs);
  96     }
  97   return (&ap->no_client);
  98 }
  99
 100 /*ARGSUSED */
 101 static bool_t
 102 authnone_marshal (AUTH *client, XDR *xdrs)
 103 {
 104   struct authnone_private_s *ap;
 105
 106   ap = (struct authnone_private_s *) authnone_private;
 107   if (ap == NULL)
 108     return FALSE;
 109   return (*xdrs->x_ops->x_putbytes) (xdrs, ap->marshalled_client, ap->mcnt);
 110 }
 111
 112 static void
 113 authnone_verf (AUTH *auth)
 114 {
 115 }
 116
 117 static bool_t
 118 authnone_validate (AUTH *auth, struct opaque_auth *oa)
 119 {
 120   return TRUE;
 121 }
 122
 123 static bool_t
 124 authnone_refresh (AUTH *auth)
 125 {
 126   return FALSE;
 127 }
 128
 129 static void
 130 authnone_destroy (AUTH *auth)
 131 {
 132 }