Delete bundled copy of OpenSSL and replace with README.

openssl/crypto/engine/eng_list.c

Index: openssl/crypto/engine/eng_list.c
diff --git a/openssl/crypto/engine/eng_list.c b/openssl/crypto/engine/eng_list.c
deleted file mode 100644
index 27846edb1e9a4c7540ce3e6b0bfa17e8358951a3..0000000000000000000000000000000000000000
--- a/openssl/crypto/engine/eng_list.c
+++ /dev/null
@@ -1,433 +0,0 @@
-/* crypto/engine/eng_list.c */
-/* 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).
- *
- */
-/* ====================================================================
- * Copyright 2002 Sun Microsystems, Inc. ALL RIGHTS RESERVED.
- * ECDH support in OpenSSL originally developed by 
- * SUN MICROSYSTEMS, INC., and contributed to the OpenSSL project.
- */
-
-#include "eng_int.h"
-
-/* The linked-list of pointers to engine types. engine_list_head
- * incorporates an implicit structural reference but engine_list_tail
- * does not - the latter is a computational niceity and only points
- * to something that is already pointed to by its predecessor in the
- * list (or engine_list_head itself). In the same way, the use of the
- * "prev" pointer in each ENGINE is to save excessive list iteration,
- * it doesn't correspond to an extra structural reference. Hence,
- * engine_list_head, and each non-null "next" pointer account for
- * the list itself assuming exactly 1 structural reference on each
- * list member. */
-static ENGINE *engine_list_head = NULL;
-static ENGINE *engine_list_tail = NULL;
-
-/* This cleanup function is only needed internally. If it should be called, we
- * register it with the "ENGINE_cleanup()" stack to be called during cleanup. */
-
-static void engine_list_cleanup(void)
-	{
-	ENGINE *iterator = engine_list_head;
-
-	while(iterator != NULL)
-		{
-		ENGINE_remove(iterator);
-		iterator = engine_list_head;
-		}
-	return;
-	}
-
-/* These static functions starting with a lower case "engine_" always
- * take place when CRYPTO_LOCK_ENGINE has been locked up. */
-static int engine_list_add(ENGINE *e)
-	{
-	int conflict = 0;
-	ENGINE *iterator = NULL;
-
-	if(e == NULL)
-		{
-		ENGINEerr(ENGINE_F_ENGINE_LIST_ADD,
-			ERR_R_PASSED_NULL_PARAMETER);
-		return 0;
-		}
-	iterator = engine_list_head;
-	while(iterator && !conflict)
-		{
-		conflict = (strcmp(iterator->id, e->id) == 0);
-		iterator = iterator->next;
-		}
-	if(conflict)
-		{
-		ENGINEerr(ENGINE_F_ENGINE_LIST_ADD,
-			ENGINE_R_CONFLICTING_ENGINE_ID);
-		return 0;
-		}
-	if(engine_list_head == NULL)
-		{
-		/* We are adding to an empty list. */
-		if(engine_list_tail)
-			{
-			ENGINEerr(ENGINE_F_ENGINE_LIST_ADD,
-				ENGINE_R_INTERNAL_LIST_ERROR);
-			return 0;
-			}
-		engine_list_head = e;
-		e->prev = NULL;
-		/* The first time the list allocates, we should register the
-		 * cleanup. */
-		engine_cleanup_add_last(engine_list_cleanup);
-		}
-	else
-		{
-		/* We are adding to the tail of an existing list. */
-		if((engine_list_tail == NULL) ||
-				(engine_list_tail->next != NULL))
-			{
-			ENGINEerr(ENGINE_F_ENGINE_LIST_ADD,
-				ENGINE_R_INTERNAL_LIST_ERROR);
-			return 0;
-			}
-		engine_list_tail->next = e;
-		e->prev = engine_list_tail;
-		}
-	/* Having the engine in the list assumes a structural
-	 * reference. */
-	e->struct_ref++;
-	engine_ref_debug(e, 0, 1)
-	/* However it came to be, e is the last item in the list. */
-	engine_list_tail = e;
-	e->next = NULL;
-	return 1;
-	}
-
-static int engine_list_remove(ENGINE *e)
-	{
-	ENGINE *iterator;
-
-	if(e == NULL)
-		{
-		ENGINEerr(ENGINE_F_ENGINE_LIST_REMOVE,
-			ERR_R_PASSED_NULL_PARAMETER);
-		return 0;
-		}
-	/* We need to check that e is in our linked list! */
-	iterator = engine_list_head;
-	while(iterator && (iterator != e))
-		iterator = iterator->next;
-	if(iterator == NULL)
-		{
-		ENGINEerr(ENGINE_F_ENGINE_LIST_REMOVE,
-			ENGINE_R_ENGINE_IS_NOT_IN_LIST);
-		return 0;
-		}
-	/* un-link e from the chain. */
-	if(e->next)
-		e->next->prev = e->prev;
-	if(e->prev)
-		e->prev->next = e->next;
-	/* Correct our head/tail if necessary. */
-	if(engine_list_head == e)
-		engine_list_head = e->next;
-	if(engine_list_tail == e)
-		engine_list_tail = e->prev;
-	engine_free_util(e, 0);
-	return 1;
-	}
-
-/* Get the first/last "ENGINE" type available. */
-ENGINE *ENGINE_get_first(void)
-	{
-	ENGINE *ret;
-
-	CRYPTO_w_lock(CRYPTO_LOCK_ENGINE);
-	ret = engine_list_head;
-	if(ret)
-		{
-		ret->struct_ref++;
-		engine_ref_debug(ret, 0, 1)
-		}
-	CRYPTO_w_unlock(CRYPTO_LOCK_ENGINE);
-	return ret;
-	}
-
-ENGINE *ENGINE_get_last(void)
-	{
-	ENGINE *ret;
-
-	CRYPTO_w_lock(CRYPTO_LOCK_ENGINE);
-	ret = engine_list_tail;
-	if(ret)
-		{
-		ret->struct_ref++;
-		engine_ref_debug(ret, 0, 1)
-		}
-	CRYPTO_w_unlock(CRYPTO_LOCK_ENGINE);
-	return ret;
-	}
-
-/* Iterate to the next/previous "ENGINE" type (NULL = end of the list). */
-ENGINE *ENGINE_get_next(ENGINE *e)
-	{
-	ENGINE *ret = NULL;
-	if(e == NULL)
-		{
-		ENGINEerr(ENGINE_F_ENGINE_GET_NEXT,
-			ERR_R_PASSED_NULL_PARAMETER);
-		return 0;
-		}
-	CRYPTO_w_lock(CRYPTO_LOCK_ENGINE);
-	ret = e->next;
-	if(ret)
-		{
-		/* Return a valid structural refernce to the next ENGINE */
-		ret->struct_ref++;
-		engine_ref_debug(ret, 0, 1)
-		}
-	CRYPTO_w_unlock(CRYPTO_LOCK_ENGINE);
-	/* Release the structural reference to the previous ENGINE */
-	ENGINE_free(e);
-	return ret;
-	}
-
-ENGINE *ENGINE_get_prev(ENGINE *e)
-	{
-	ENGINE *ret = NULL;
-	if(e == NULL)
-		{
-		ENGINEerr(ENGINE_F_ENGINE_GET_PREV,
-			ERR_R_PASSED_NULL_PARAMETER);
-		return 0;
-		}
-	CRYPTO_w_lock(CRYPTO_LOCK_ENGINE);
-	ret = e->prev;
-	if(ret)
-		{
-		/* Return a valid structural reference to the next ENGINE */
-		ret->struct_ref++;
-		engine_ref_debug(ret, 0, 1)
-		}
-	CRYPTO_w_unlock(CRYPTO_LOCK_ENGINE);
-	/* Release the structural reference to the previous ENGINE */
-	ENGINE_free(e);
-	return ret;
-	}
-
-/* Add another "ENGINE" type into the list. */
-int ENGINE_add(ENGINE *e)
-	{
-	int to_return = 1;
-	if(e == NULL)
-		{
-		ENGINEerr(ENGINE_F_ENGINE_ADD,
-			ERR_R_PASSED_NULL_PARAMETER);
-		return 0;
-		}
-	if((e->id == NULL) || (e->name == NULL))
-		{
-		ENGINEerr(ENGINE_F_ENGINE_ADD,
-			ENGINE_R_ID_OR_NAME_MISSING);
-		}
-	CRYPTO_w_lock(CRYPTO_LOCK_ENGINE);
-	if(!engine_list_add(e))
-		{
-		ENGINEerr(ENGINE_F_ENGINE_ADD,
-			ENGINE_R_INTERNAL_LIST_ERROR);
-		to_return = 0;
-		}
-	CRYPTO_w_unlock(CRYPTO_LOCK_ENGINE);
-	return to_return;
-	}
-
-/* Remove an existing "ENGINE" type from the array. */
-int ENGINE_remove(ENGINE *e)
-	{
-	int to_return = 1;
-	if(e == NULL)
-		{
-		ENGINEerr(ENGINE_F_ENGINE_REMOVE,
-			ERR_R_PASSED_NULL_PARAMETER);
-		return 0;
-		}
-	CRYPTO_w_lock(CRYPTO_LOCK_ENGINE);
-	if(!engine_list_remove(e))
-		{
-		ENGINEerr(ENGINE_F_ENGINE_REMOVE,
-			ENGINE_R_INTERNAL_LIST_ERROR);
-		to_return = 0;
-		}
-	CRYPTO_w_unlock(CRYPTO_LOCK_ENGINE);
-	return to_return;
-	}
-
-static void engine_cpy(ENGINE *dest, const ENGINE *src)
-	{
-	dest->id = src->id;
-	dest->name = src->name;
-#ifndef OPENSSL_NO_RSA
-	dest->rsa_meth = src->rsa_meth;
-#endif
-#ifndef OPENSSL_NO_DSA
-	dest->dsa_meth = src->dsa_meth;
-#endif
-#ifndef OPENSSL_NO_DH
-	dest->dh_meth = src->dh_meth;
-#endif
-#ifndef OPENSSL_NO_ECDH
-	dest->ecdh_meth = src->ecdh_meth;
-#endif
-#ifndef OPENSSL_NO_ECDSA
-	dest->ecdsa_meth = src->ecdsa_meth;
-#endif
-	dest->rand_meth = src->rand_meth;
-	dest->store_meth = src->store_meth;
-	dest->ciphers = src->ciphers;
-	dest->digests = src->digests;
-	dest->pkey_meths = src->pkey_meths;
-	dest->destroy = src->destroy;
-	dest->init = src->init;
-	dest->finish = src->finish;
-	dest->ctrl = src->ctrl;
-	dest->load_privkey = src->load_privkey;
-	dest->load_pubkey = src->load_pubkey;
-	dest->cmd_defns = src->cmd_defns;
-	dest->flags = src->flags;
-	}
-
-ENGINE *ENGINE_by_id(const char *id)
-	{
-	ENGINE *iterator;
-	char *load_dir = NULL;
-	if(id == NULL)
-		{
-		ENGINEerr(ENGINE_F_ENGINE_BY_ID,
-			ERR_R_PASSED_NULL_PARAMETER);
-		return NULL;
-		}
-	CRYPTO_w_lock(CRYPTO_LOCK_ENGINE);
-	iterator = engine_list_head;
-	while(iterator && (strcmp(id, iterator->id) != 0))
-		iterator = iterator->next;
-	if(iterator)
-		{
-		/* We need to return a structural reference. If this is an
-		 * ENGINE type that returns copies, make a duplicate - otherwise
-		 * increment the existing ENGINE's reference count. */
-		if(iterator->flags & ENGINE_FLAGS_BY_ID_COPY)
-			{
-			ENGINE *cp = ENGINE_new();
-			if(!cp)
-				iterator = NULL;
-			else
-				{
-				engine_cpy(cp, iterator);
-				iterator = cp;
-				}
-			}
-		else
-			{
-			iterator->struct_ref++;
-			engine_ref_debug(iterator, 0, 1)
-			}
-		}
-	CRYPTO_w_unlock(CRYPTO_LOCK_ENGINE);
-#if 0
-	if(iterator == NULL)
-		{
-		ENGINEerr(ENGINE_F_ENGINE_BY_ID,
-			ENGINE_R_NO_SUCH_ENGINE);
-		ERR_add_error_data(2, "id=", id);
-		}
-	return iterator;
-#else
-	/* EEK! Experimental code starts */
-	if(iterator) return iterator;
-	/* Prevent infinite recusrion if we're looking for the dynamic engine. */
-	if (strcmp(id, "dynamic"))
-		{
-#ifdef OPENSSL_SYS_VMS
-		if((load_dir = getenv("OPENSSL_ENGINES")) == 0) load_dir = "SSLROOT:[ENGINES]";
-#else
-		if((load_dir = getenv("OPENSSL_ENGINES")) == 0) load_dir = ENGINESDIR;
-#endif
-		iterator = ENGINE_by_id("dynamic");
-		if(!iterator || !ENGINE_ctrl_cmd_string(iterator, "ID", id, 0) ||
-				!ENGINE_ctrl_cmd_string(iterator, "DIR_LOAD", "2", 0) ||
-				!ENGINE_ctrl_cmd_string(iterator, "DIR_ADD",
-					load_dir, 0) ||
-				!ENGINE_ctrl_cmd_string(iterator, "LOAD", NULL, 0))
-				goto notfound;
-		return iterator;
-		}
-notfound:
-	ENGINE_free(iterator);
-	ENGINEerr(ENGINE_F_ENGINE_BY_ID,ENGINE_R_NO_SUCH_ENGINE);
-	ERR_add_error_data(2, "id=", id);
-	return NULL;
-	/* EEK! Experimental code ends */
-#endif
-	}
-
-int ENGINE_up_ref(ENGINE *e)
-	{
-	if (e == NULL)
-		{
-		ENGINEerr(ENGINE_F_ENGINE_UP_REF,ERR_R_PASSED_NULL_PARAMETER);
-		return 0;
-		}
-	CRYPTO_add(&e->struct_ref,1,CRYPTO_LOCK_ENGINE);
-	return 1;
-	}