/*	$OpenBSD: enginetest.c,v 1.9 2022/09/05 21:06:31 tb Exp $	*/
/* Written by Geoff Thorpe (geoff@geoffthorpe.net) for the OpenSSL
 * project 2000.
 */
/* ====================================================================
 * Copyright (c) 1999-2001 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
 * are met:
 *
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 *
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in
 *    the documentation and/or other materials provided with the
 *    distribution.
 *
 * 3. All advertising materials mentioning features or use of this
 *    software must display the following acknowledgment:
 *    "This product includes software developed by the OpenSSL Project
 *    for use in the OpenSSL Toolkit. (http://www.OpenSSL.org/)"
 *
 * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
 *    endorse or promote products derived from this software without
 *    prior written permission. For written permission, please contact
 *    licensing@OpenSSL.org.
 *
 * 5. Products derived from this software may not be called "OpenSSL"
 *    nor may "OpenSSL" appear in their names without prior written
 *    permission of the OpenSSL Project.
 *
 * 6. Redistributions of any form whatsoever must retain the following
 *    acknowledgment:
 *    "This product includes software developed by the OpenSSL Project
 *    for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)"
 *
 * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
 * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
 * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE OpenSSL PROJECT OR
 * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
 * OF THE POSSIBILITY OF SUCH DAMAGE.
 * ====================================================================
 *
 * This product includes cryptographic software written by Eric Young
 * (eay@cryptsoft.com).  This product includes software written by Tim
 * Hudson (tjh@cryptsoft.com).
 *
 */

#include <stdio.h>
#include <string.h>

#include <openssl/buffer.h>
#include <openssl/crypto.h>
#include <openssl/engine.h>
#include <openssl/err.h>

static void display_engine_list(void)
{
	ENGINE *h;
	int loop;

	h = ENGINE_get_first();
	loop = 0;
	printf("listing available engine types\n");
	while (h) {
		printf("engine %d, id = \"%s\", name = \"%s\"\n",
		    loop++, ENGINE_get_id(h), ENGINE_get_name(h));
		h = ENGINE_get_next(h);
	}

	printf("end of list\n");
	/*
	 * ENGINE_get_first() increases the struct_ref counter, so we must call
	 * ENGINE_free() to decrease it again
	 */
	ENGINE_free(h);
}

int main(int argc, char *argv[])
{
	ENGINE *block[512];
	char *id, *name;
	ENGINE *ptr;
	int loop;
	int to_return = 1;
	ENGINE *new_h1 = NULL;
	ENGINE *new_h2 = NULL;
	ENGINE *new_h3 = NULL;
	ENGINE *new_h4 = NULL;

	ERR_load_crypto_strings();

	memset(block, 0, 512 * sizeof(ENGINE *));
	if (((new_h1 = ENGINE_new()) == NULL) ||
	   !ENGINE_set_id(new_h1, "test_id0") ||
	   !ENGINE_set_name(new_h1, "First test item") ||
	   ((new_h2 = ENGINE_new()) == NULL) ||
	   !ENGINE_set_id(new_h2, "test_id1") ||
	   !ENGINE_set_name(new_h2, "Second test item") ||
	   ((new_h3 = ENGINE_new()) == NULL) ||
	   !ENGINE_set_id(new_h3, "test_id2") ||
	   !ENGINE_set_name(new_h3, "Third test item") ||
	   ((new_h4 = ENGINE_new()) == NULL) ||
	   !ENGINE_set_id(new_h4, "test_id3") ||
	   !ENGINE_set_name(new_h4, "Fourth test item")) {
		printf("Couldn't set up test ENGINE structures\n");
		goto end;
	}

	printf("\nenginetest beginning\n\n");
	display_engine_list();
	if (!ENGINE_add(new_h1)) {
		printf("Add failed!\n");
		goto end;
	}
	display_engine_list();
	ptr = ENGINE_get_first();
	if (!ENGINE_remove(ptr)) {
		printf("Remove failed!\n");
		goto end;
	}
	ENGINE_free(ptr);
	display_engine_list();
	if (!ENGINE_add(new_h3) || !ENGINE_add(new_h2)) {
		printf("Add failed!\n");
		goto end;
	}
	display_engine_list();
	if (!ENGINE_remove(new_h2)) {
		printf("Remove failed!\n");
		goto end;
	}
	display_engine_list();
	if (!ENGINE_add(new_h4)) {
		printf("Add failed!\n");
		goto end;
	}
	display_engine_list();
	if (ENGINE_add(new_h3)) {
		printf("Add *should* have failed but didn't!\n");
		goto end;
	} else
		printf("Add that should fail did.\n");
	ERR_clear_error();
	if (ENGINE_remove(new_h2)) {
		printf("Remove *should* have failed but didn't!\n");
		goto end;
	} else
		printf("Remove that should fail did.\n");
	ERR_clear_error();
	if (!ENGINE_remove(new_h3)) {
		printf("Remove failed!\n");
		goto end;
	}
	display_engine_list();
	if (!ENGINE_remove(new_h4)) {
		printf("Remove failed!\n");
		goto end;
	}
	display_engine_list();
	/*
	 * Depending on whether there's any hardware support compiled
	 * in, this remove may be destined to fail.
	 */
	ptr = ENGINE_get_first();
	if (ptr)
		if (!ENGINE_remove(ptr))
			printf("Remove failed!i - probably no hardware "
				"support present.\n");
	ENGINE_free(ptr);
	display_engine_list();

	if (!ENGINE_add(new_h1) || !ENGINE_remove(new_h1)) {
		printf("Couldn't add and remove to an empty list!\n");
		goto end;
	} else
		printf("Successfully added and removed to an empty list!\n");

	printf("About to beef up the engine-type list\n");
	for (loop = 0; loop < 512; loop++) {
		if (asprintf(&id, "id%d", loop) == -1)
			goto end;
		if (asprintf(&name, "Fake engine type %d", loop) == -1)
			goto end;

		if (((block[loop] = ENGINE_new()) == NULL) ||
		    !id || !ENGINE_set_id(block[loop], id) ||
		    !name || !ENGINE_set_name(block[loop], name)) {
			printf("Couldn't create block of ENGINE structures.\n");
			goto end;
		}
	}

	for (loop = 0; loop < 512; loop++) {
		if (!ENGINE_add(block[loop])) {
			printf("\nAdding stopped at %d, (%s,%s)\n",
				loop, ENGINE_get_id(block[loop]),
				ENGINE_get_name(block[loop]));
			break;
		}
		printf(".");
		fflush(stdout);
	}
	printf("\nAbout to empty the engine-type list\n");
	while ((ptr = ENGINE_get_first()) != NULL) {
		if (!ENGINE_remove(ptr)) {
			printf("\nRemove failed!\n");
			goto end;
		}
		ENGINE_free(ptr);
		printf("."); fflush(stdout);
	}
	for (loop = 0; loop < 512; loop++) {
		free((void *)ENGINE_get_id(block[loop]));
		free((void *)ENGINE_get_name(block[loop]));
	}
	printf("\nTests completed happily\n");
	to_return = 0;
end:
	if (to_return)
		ERR_print_errors_fp(stderr);
	ENGINE_free(new_h1);
	ENGINE_free(new_h2);
	ENGINE_free(new_h3);
	ENGINE_free(new_h4);
	for (loop = 0; loop < 512; loop++)
		ENGINE_free(block[loop]);
	ENGINE_cleanup();
	CRYPTO_cleanup_all_ex_data();
	ERR_free_strings();
	ERR_remove_thread_state(NULL);
	CRYPTO_mem_leaks_fp(stderr);
	return to_return;
}