tb_store.c

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/* ====================================================================
 * Copyright (c) 2003 The OpenSSL Project.  All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
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 *    distribution.
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 *    software must display the following acknowledgment:
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 * This product includes cryptographic software written by Eric Young
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 */

#include "eng_int.h"

/* If this symbol is defined then ENGINE_get_default_STORE(), the function that is
 * used by STORE to hook in implementation code and cache defaults (etc), will
 * display brief debugging summaries to stderr with the 'nid'. */
/* #define ENGINE_STORE_DEBUG */

static ENGINE_TABLE *store_table = NULL;
static const int dummy_nid = 1;

void ENGINE_unregister_STORE(ENGINE *e)
    {
    engine_table_unregister(&store_table, e);
    }

static void engine_unregister_all_STORE(void)
    {
    engine_table_cleanup(&store_table);
    }

int ENGINE_register_STORE(ENGINE *e)
    {
    if(e->store_meth)
        return engine_table_register(&store_table,
                engine_unregister_all_STORE, e, &dummy_nid, 1, 0);
    return 1;
    }

void ENGINE_register_all_STORE()
    {
    ENGINE *e;

    for(e=ENGINE_get_first() ; e ; e=ENGINE_get_next(e))
        ENGINE_register_STORE(e);
    }

/* The following two functions are removed because they're useless. */
#if 0
int ENGINE_set_default_STORE(ENGINE *e)
    {
    if(e->store_meth)
        return engine_table_register(&store_table,
                engine_unregister_all_STORE, e, &dummy_nid, 1, 1);
    return 1;
    }
#endif

#if 0
/* Exposed API function to get a functional reference from the implementation
 * table (ie. try to get a functional reference from the tabled structural
 * references). */
ENGINE *ENGINE_get_default_STORE(void)
    {
    return engine_table_select(&store_table, dummy_nid);
    }
#endif

/* Obtains an STORE implementation from an ENGINE functional reference */
const STORE_METHOD *ENGINE_get_STORE(const ENGINE *e)
    {
    return e->store_meth;
    }

/* Sets an STORE implementation in an ENGINE structure */
int ENGINE_set_STORE(ENGINE *e, const STORE_METHOD *store_meth)
    {
    e->store_meth = store_meth;
    return 1;
    }