Merge the engine branch into the main trunk.  All conflicts resolved.
At the same time, add VMS support for Rijndael.
diff --git a/crypto/engine/enginetest.c b/crypto/engine/enginetest.c
new file mode 100644
index 0000000..a5a3c47
--- /dev/null
+++ b/crypto/engine/enginetest.c
@@ -0,0 +1,251 @@
+/* crypto/engine/enginetest.c */
+/* Written by Geoff Thorpe (geoff@geoffthorpe.net) for the OpenSSL
+ * project 2000.
+ */
+/* ====================================================================
+ * Copyright (c) 1999 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/engine.h>
+#include <openssl/err.h>
+
+static void display_engine_list()
+	{
+	ENGINE *h;
+	int loop;
+
+	h = ENGINE_get_first();
+	loop = 0;
+	printf("listing available engine types\n");
+	while(h)
+		{
+		printf("engine %i, id = \"%s\", name = \"%s\"\n",
+			loop++, ENGINE_get_id(h), ENGINE_get_name(h));
+		h = ENGINE_get_next(h);
+		}
+	printf("end of list\n");
+	}
+
+int main(int argc, char *argv[])
+	{
+	ENGINE *block[512];
+	char buf[256];
+	const 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;
+		}
+	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");
+	if(!ENGINE_remove(new_h1))
+		{
+		printf("Remove failed!\n");
+		goto end;
+		}
+	display_engine_list();
+	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");
+	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++)
+		{
+		sprintf(buf, "id%i", loop);
+		id = strdup(buf);
+		sprintf(buf, "Fake engine type %i", loop);
+		name = strdup(buf);
+		if(((block[loop] = ENGINE_new()) == NULL) ||
+				!ENGINE_set_id(block[loop], id) ||
+				!ENGINE_set_name(block[loop], name))
+			{
+			printf("Couldn't create block of ENGINE structures.\n"
+				"I'll probably also core-dump now, damn.\n");
+			goto end;
+			}
+		}
+	for(loop = 0; loop < 512; loop++)
+		{
+		if(!ENGINE_add(block[loop]))
+			{
+			printf("\nAdding stopped at %i, (%s,%s)\n",
+				loop, ENGINE_get_id(block[loop]),
+				ENGINE_get_name(block[loop]));
+			goto cleanup_loop;
+			}
+		else
+			printf("."); fflush(stdout);
+		}
+cleanup_loop:
+	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;
+			}
+		printf("."); fflush(stdout);
+		}
+	for(loop = 0; loop < 512; loop++)
+		{
+		free((char *)(ENGINE_get_id(block[loop])));
+		free((char *)(ENGINE_get_name(block[loop])));
+		}
+	printf("\nTests completed happily\n");
+	to_return = 0;
+end:
+	if(to_return)
+		ERR_print_errors_fp(stderr);
+	if(new_h1) ENGINE_free(new_h1);
+	if(new_h2) ENGINE_free(new_h2);
+	if(new_h3) ENGINE_free(new_h3);
+	if(new_h4) ENGINE_free(new_h4);
+	for(loop = 0; loop < 512; loop++)
+		if(block[loop])
+			ENGINE_free(block[loop]);
+	return to_return;
+	}