lib/krb5/pcache.c

   1 /***********************************************************************
   2  * Copyright (c) 2010, Secure Endpoints Inc.
   3  * All rights reserved.
   4  *
   5  * Redistribution and use in source and binary forms, with or without
   6  * modification, are permitted provided that the following conditions
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   9  * - Redistributions of source code must retain the above copyright
  10  *   notice, this list of conditions and the following disclaimer.
  11  *
  12  * - Redistributions in binary form must reproduce the above copyright
  13  *   notice, this list of conditions and the following disclaimer in
  14  *   the documentation and/or other materials provided with the
  15  *   distribution.
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  17  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
  18  * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
  19  * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
  20  * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
  21  * COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
  22  * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
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  30  **********************************************************************/
  31
  32 #include "krb5_locl.h"
  33 #include "ccache_plugin.h"
  34 #ifdef HAVE_DLFCN_H
  35 #include <dlfcn.h>
  36 #endif
  37 #include <assert.h>
  38
  39 /*
  40  * cc_plugin_register_to_context is executed once per krb5_init_context().
  41  * Its job is to register the plugin's krb5_cc_ops structure with the
  42  * krb5_context.
  43  */
  44
  45 static krb5_error_code KRB5_LIB_CALL
  46 cc_plugin_register_to_context(krb5_context context, const void *plug, void *plugctx, void *userctx)
  47 {
  48     krb5_cc_ops *ccops = (krb5_cc_ops *)plugctx;
  49     krb5_error_code ret;
  50
  51     if (ccops == NULL || ccops->version < KRB5_CC_OPS_VERSION)
  52        return KRB5_PLUGIN_NO_HANDLE;
  53
  54     ret = krb5_cc_register(context, ccops, TRUE);
  55     if (ret != 0)
  56        *((krb5_error_code *)userctx) = ret;
  57
  58     return KRB5_PLUGIN_NO_HANDLE;
  59 }
  60
  61 KRB5_LIB_FUNCTION krb5_error_code KRB5_LIB_CALL
  62 _krb5_load_ccache_plugins(krb5_context context)
  63 {
  64     krb5_error_code userctx = 0;
  65
  66     (void)_krb5_plugin_run_f(context, "krb5", KRB5_PLUGIN_CCACHE,
  67                              0, 0, &userctx, cc_plugin_register_to_context);
  68
  69     return userctx;
  70 }