/*

 * Copyright 2016-2018 The OpenSSL Project Authors. All Rights Reserved.

 *

 * Licensed under the OpenSSL license (the "License").  You may not use

 * this file except in compliance with the License.  You can obtain a copy

 * in the file LICENSE in the source distribution or at

 * https://www.openssl.org/source/license.html

 */

#include "internal/thread_once.h"

#include <openssl/dsa.h>

#include <openssl/engine.h>

#include <openssl/evp.h>

#include <openssl/lhash.h>

#include <openssl/x509.h>

#include <openssl/store.h>

/*-

 *  OSSL_STORE_INFO stuff

 *  ---------------------

 */

struct ossl_store_info_st {

    int type;

    union {

        void *data;              /* used internally as generic pointer */

        struct {

            BUF_MEM *blob;

            char *pem_name;

        } embedded;              /* when type == OSSL_STORE_INFO_EMBEDDED */

        struct {

            char *name;

            char *desc;

        } name;                  /* when type == OSSL_STORE_INFO_NAME */

        EVP_PKEY *params;        /* when type == OSSL_STORE_INFO_PARAMS */

        EVP_PKEY *pkey;          /* when type == OSSL_STORE_INFO_PKEY */

        X509 *x509;              /* when type == OSSL_STORE_INFO_CERT */

        X509_CRL *crl;           /* when type == OSSL_STORE_INFO_CRL */

    } _;

};

DEFINE_STACK_OF(OSSL_STORE_INFO)

/*

 * EMBEDDED is a special type of OSSL_STORE_INFO, specially for the file

 * handlers.  It should never reach a calling application or any engine.

 * However, it can be used by a FILE_HANDLER's try_decode function to signal

 * that it has decoded the incoming blob into a new blob, and that the

 * attempted decoding should be immediately restarted with the new blob, using

 * the new PEM name.

 */

/*

 * Because this is an internal type, we don't make it public.

 */

#define OSSL_STORE_INFO_EMBEDDED       -1

OSSL_STORE_INFO *ossl_store_info_new_EMBEDDED(const char *new_pem_name,

                                              BUF_MEM *embedded);

BUF_MEM *ossl_store_info_get0_EMBEDDED_buffer(OSSL_STORE_INFO *info);

char *ossl_store_info_get0_EMBEDDED_pem_name(OSSL_STORE_INFO *info);

/*-

 *  OSSL_STORE_SEARCH stuff

 *  -----------------------

 */

struct ossl_store_search_st {

    int search_type;

    /*

     * Used by OSSL_STORE_SEARCH_BY_NAME and

     * OSSL_STORE_SEARCH_BY_ISSUER_SERIAL

     */

    X509_NAME *name;

    /* Used by OSSL_STORE_SEARCH_BY_ISSUER_SERIAL */

    const ASN1_INTEGER *serial;

    /* Used by OSSL_STORE_SEARCH_BY_KEY_FINGERPRINT */

    const EVP_MD *digest;

    /*

     * Used by OSSL_STORE_SEARCH_BY_KEY_FINGERPRINT and

     * OSSL_STORE_SEARCH_BY_ALIAS

     */

    const unsigned char *string;

    size_t stringlength;

};

/*-

 *  OSSL_STORE_LOADER stuff

 *  -----------------------

 */

int ossl_store_register_loader_int(OSSL_STORE_LOADER *loader);

OSSL_STORE_LOADER *ossl_store_unregister_loader_int(const char *scheme);

/* loader stuff */

struct ossl_store_loader_st {

    const char *scheme;

    ENGINE *engine;

    OSSL_STORE_open_fn open;

    OSSL_STORE_ctrl_fn ctrl;

    OSSL_STORE_expect_fn expect;

    OSSL_STORE_find_fn find;

    OSSL_STORE_load_fn load;

    OSSL_STORE_eof_fn eof;

    OSSL_STORE_error_fn error;

    OSSL_STORE_close_fn close;

};

DEFINE_LHASH_OF(OSSL_STORE_LOADER);

const OSSL_STORE_LOADER *ossl_store_get0_loader_int(const char *scheme);

void ossl_store_destroy_loaders_int(void);

/*-

 *  OSSL_STORE init stuff

 *  ---------------------

 */

int ossl_store_init_once(void);

int ossl_store_file_loader_init(void);

/*-

 *  'file' scheme stuff

 *  -------------------

 */

OSSL_STORE_LOADER_CTX *ossl_store_file_attach_pem_bio_int(BIO *bp);

int ossl_store_file_detach_pem_bio_int(OSSL_STORE_LOADER_CTX *ctx);