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 #define __FORCE_GLIBC
  39 #include <features.h>
  40 #include "rpc_private.h"
  41
  42
  43 #define MAX_MARSHAL_SIZE 20
  44
  45 /*
  46  * Authenticator operations routines
  47  */
  48 static void authnone_verf (AUTH *);
  49 static void authnone_destroy (AUTH *);
  50 static bool_t authnone_marshal (AUTH *, XDR *);
  51 static bool_t authnone_validate (AUTH *, struct opaque_auth *);
  52 static bool_t authnone_refresh (AUTH *);
  53
  54 static const struct auth_ops ops = {
  55   authnone_verf,
  56   authnone_marshal,
  57   authnone_validate,
  58   authnone_refresh,
  59   authnone_destroy
  60 };
  61
  62 /* Internal data and routines */
  63
  64 struct authnone_private_s {
  65   AUTH no_client;
  66   char marshalled_client[MAX_MARSHAL_SIZE];
  67   u_int mcnt;
  68 };
  69 #ifdef __UCLIBC_HAS_THREADS__
  70 #define authnone_private (*(struct authnone_private_s **)&RPC_THREAD_VARIABLE(authnone_private_s))
  71 #else
  72 static struct authnone_private_s *authnone_private;
  73 #endif
  74
  75 AUTH *
  76 authnone_create (void)
  77 {
  78   struct authnone_private_s *ap;
  79   XDR xdr_stream;
  80   XDR *xdrs;
  81
  82   ap = (struct authnone_private_s *) authnone_private;
  83   if (ap == NULL)
  84     {
  85       ap = (struct authnone_private_s *) calloc (1, sizeof (*ap));
  86       if (ap == NULL)
  87         return NULL;
  88       authnone_private = ap;
  89     }
  90   if (!ap->mcnt)
  91     {
  92       ap->no_client.ah_cred = ap->no_client.ah_verf = _null_auth;
  93       ap->no_client.ah_ops = (struct auth_ops *)&ops;
  94       xdrs = &xdr_stream;
  95       xdrmem_create (xdrs, ap->marshalled_client, (u_int) MAX_MARSHAL_SIZE,
  96                      XDR_ENCODE);
  97       (void) xdr_opaque_auth (xdrs, &ap->no_client.ah_cred);
  98       (void) xdr_opaque_auth (xdrs, &ap->no_client.ah_verf);
  99       ap->mcnt = XDR_GETPOS (xdrs);
 100       XDR_DESTROY (xdrs);
 101     }
 102   return (&ap->no_client);
 103 }
 104 libc_hidden_def(authnone_create)
 105
 106 static bool_t
 107 authnone_marshal (AUTH *client attribute_unused, XDR *xdrs)
 108 {
 109   struct authnone_private_s *ap;
 110
 111   ap = authnone_private;
 112   if (ap == NULL)
 113     return FALSE;
 114   return (*xdrs->x_ops->x_putbytes) (xdrs, ap->marshalled_client, ap->mcnt);
 115 }
 116
 117 static void
 118 authnone_verf (AUTH *auth attribute_unused)
 119 {
 120 }
 121
 122 static bool_t
 123 authnone_validate (AUTH *auth attribute_unused, struct opaque_auth *oa attribute_unused)
 124 {
 125   return TRUE;
 126 }
 127
 128 static bool_t
 129 authnone_refresh (AUTH *auth attribute_unused)
 130 {
 131   return FALSE;
 132 }
 133
 134 static void
 135 authnone_destroy (AUTH *auth attribute_unused)
 136 {
 137 }