-/* crypto/engine/engine_int.h */
-/* Written by Geoff Thorpe (geoff@geoffthorpe.net) for the OpenSSL
- * project 2000.
+/*
+ * Copyright 2001-2016 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
*/
+
/* ====================================================================
- * 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).
- *
+ * Copyright 2002 Sun Microsystems, Inc. ALL RIGHTS RESERVED.
+ * ECDH support in OpenSSL originally developed by
+ * SUN MICROSYSTEMS, INC., and contributed to the OpenSSL project.
*/
#ifndef HEADER_ENGINE_INT_H
-#define HEADER_ENGINE_INT_H
+# define HEADER_ENGINE_INT_H
-/* Take public definitions from engine.h */
-#include <openssl/engine.h>
+# include "internal/cryptlib.h"
+# include <internal/engine.h>
+# include <internal/thread_once.h>
+# include "internal/refcount.h"
#ifdef __cplusplus
extern "C" {
#endif
-/* If we compile with this symbol defined, then both reference counts in the
- * ENGINE structure will be monitored with a line of output on stderr for each
- * change. This prints the engine's pointer address (truncated to unsigned int),
- * "struct" or "funct" to indicate the reference type, the before and after
- * reference count, and the file:line-number pair. The "engine_ref_debug"
- * statements must come *after* the change. */
-#ifdef ENGINE_REF_COUNT_DEBUG
+extern CRYPTO_RWLOCK *global_engine_lock;
-#define engine_ref_debug(e, isfunct, diff) \
- fprintf(stderr, "engine: %08x %s from %d to %d (%s:%d)\n", \
- (unsigned int)(e), (isfunct ? "funct" : "struct"), \
- ((isfunct) ? ((e)->funct_ref - (diff)) : ((e)->struct_ref - (diff))), \
- ((isfunct) ? (e)->funct_ref : (e)->struct_ref), \
- (__FILE__), (__LINE__));
+/*
+ * If we compile with this symbol defined, then both reference counts in the
+ * ENGINE structure will be monitored with a line of output on stderr for
+ * each change. This prints the engine's pointer address (truncated to
+ * unsigned int), "struct" or "funct" to indicate the reference type, the
+ * before and after reference count, and the file:line-number pair. The
+ * "engine_ref_debug" statements must come *after* the change.
+ */
+# ifdef ENGINE_REF_COUNT_DEBUG
-#else
+# define engine_ref_debug(e, isfunct, diff) \
+ fprintf(stderr, "engine: %08x %s from %d to %d (%s:%d)\n", \
+ (unsigned int)(e), (isfunct ? "funct" : "struct"), \
+ ((isfunct) ? ((e)->funct_ref - (diff)) : ((e)->struct_ref - (diff))), \
+ ((isfunct) ? (e)->funct_ref : (e)->struct_ref), \
+ (OPENSSL_FILE), (OPENSSL_LINE))
-#define engine_ref_debug(e, isfunct, diff)
+# else
-#endif
+# define engine_ref_debug(e, isfunct, diff)
-typedef struct engine_evp_cipher_st
- {
- const EVP_CIPHER *cipher;
- } ENGINE_EVP_CIPHER;
-
-DECLARE_STACK_OF(ENGINE_EVP_CIPHER)
-
-void ENGINE_free_engine_cipher(ENGINE_EVP_CIPHER *p);
-
-/* NB: Bitwise OR-able values for the "flags" variable in ENGINE are now exposed
- * in engine.h. */
-
-/* This is a structure for storing implementations of various crypto
- * algorithms and functions. */
-struct engine_st
- {
- const char *id;
- const char *name;
- const RSA_METHOD *rsa_meth;
- const DSA_METHOD *dsa_meth;
- const DH_METHOD *dh_meth;
- const RAND_METHOD *rand_meth;
-
- BN_MOD_EXP bn_mod_exp;
- BN_MOD_EXP_CRT bn_mod_exp_crt;
- ENGINE_GEN_INT_FUNC_PTR destroy;
- ENGINE_GEN_INT_FUNC_PTR init;
- ENGINE_GEN_INT_FUNC_PTR finish;
- ENGINE_CTRL_FUNC_PTR ctrl;
- ENGINE_LOAD_KEY_PTR load_privkey;
- ENGINE_LOAD_KEY_PTR load_pubkey;
-
- STACK_OF(ENGINE_EVP_CIPHER) *ciphers;
-
- const ENGINE_CMD_DEFN *cmd_defns;
- int flags;
- /* reference count on the structure itself */
- int struct_ref;
- /* reference count on usability of the engine type. NB: This
- * controls the loading and initialisation of any functionlity
- * required by this engine, whereas the previous count is
- * simply to cope with (de)allocation of this structure. Hence,
- * running_ref <= struct_ref at all times. */
- int funct_ref;
- /* A place to store per-key data */
- CRYPTO_EX_DATA ex_data;
- /* Used to maintain the linked-list of engines. */
- struct engine_st *prev;
- struct engine_st *next;
- };
-
-/* BUILT-IN ENGINES. (these functions are only ever called once and
- * do not return references - they are purely for bootstrapping). */
-
-/* Returns a structure of software only methods (the default). */
-ENGINE *ENGINE_openssl(void);
-
-/* Returns the "dynamic" ENGINE for loading entire ENGINE implementations from
- * shared libraries. */
-ENGINE *ENGINE_dynamic(void);
-
-#ifndef OPENSSL_NO_HW
-
-#ifndef OPENSSL_NO_HW_CSWIFT
-/* Returns a structure of cswift methods ... NB: This can exist and be
- * "used" even on non-cswift systems because the "init" will fail if the
- * card/library are not found. */
-ENGINE *ENGINE_cswift(void);
-#endif /* !OPENSSL_NO_HW_CSWIFT */
-
-#ifndef OPENSSL_NO_HW_NCIPHER
-ENGINE *ENGINE_ncipher(void);
-#endif /* !OPENSSL_NO_HW_NCIPHER */
-
-#ifndef OPENSSL_NO_HW_ATALLA
-/* Returns a structure of atalla methods. */
-ENGINE *ENGINE_atalla(void);
-#endif /* !OPENSSL_NO_HW_ATALLA */
-
-#ifndef OPENSSL_NO_HW_NURON
-ENGINE *ENGINE_nuron(void);
-#endif /* !OPENSSL_NO_HW_NURON */
-
-#ifndef OPENSSL_NO_HW_UBSEC
-ENGINE *ENGINE_ubsec(void);
-#endif /* !OPENSSL_NO_HW_UBSEC */
-
-#ifdef OPENSSL_OPENBSD_DEV_CRYPTO
-ENGINE *ENGINE_openbsd_dev_crypto(void);
-#endif
+# endif
+
+/*
+ * Any code that will need cleanup operations should use these functions to
+ * register callbacks. engine_cleanup_int() will call all registered
+ * callbacks in order. NB: both the "add" functions assume the engine lock to
+ * already be held (in "write" mode).
+ */
+typedef void (ENGINE_CLEANUP_CB) (void);
+typedef struct st_engine_cleanup_item {
+ ENGINE_CLEANUP_CB *cb;
+} ENGINE_CLEANUP_ITEM;
+DEFINE_STACK_OF(ENGINE_CLEANUP_ITEM)
+void engine_cleanup_add_first(ENGINE_CLEANUP_CB *cb);
+void engine_cleanup_add_last(ENGINE_CLEANUP_CB *cb);
+
+/* We need stacks of ENGINEs for use in eng_table.c */
+DEFINE_STACK_OF(ENGINE)
+
+/*
+ * If this symbol is defined then engine_table_select(), the function that is
+ * used by RSA, DSA (etc) code to select registered ENGINEs, cache defaults
+ * and functional references (etc), will display debugging summaries to
+ * stderr.
+ */
+/* #define ENGINE_TABLE_DEBUG */
+
+/*
+ * This represents an implementation table. Dependent code should instantiate
+ * it as a (ENGINE_TABLE *) pointer value set initially to NULL.
+ */
+typedef struct st_engine_table ENGINE_TABLE;
+int engine_table_register(ENGINE_TABLE **table, ENGINE_CLEANUP_CB *cleanup,
+ ENGINE *e, const int *nids, int num_nids,
+ int setdefault);
+void engine_table_unregister(ENGINE_TABLE **table, ENGINE *e);
+void engine_table_cleanup(ENGINE_TABLE **table);
+# ifndef ENGINE_TABLE_DEBUG
+ENGINE *engine_table_select(ENGINE_TABLE **table, int nid);
+# else
+ENGINE *engine_table_select_tmp(ENGINE_TABLE **table, int nid, const char *f,
+ int l);
+# define engine_table_select(t,n) engine_table_select_tmp(t,n,OPENSSL_FILE,OPENSSL_LINE)
+# endif
+typedef void (engine_table_doall_cb) (int nid, STACK_OF(ENGINE) *sk,
+ ENGINE *def, void *arg);
+void engine_table_doall(ENGINE_TABLE *table, engine_table_doall_cb *cb,
+ void *arg);
+
+/*
+ * Internal versions of API functions that have control over locking. These
+ * are used between C files when functionality needs to be shared but the
+ * caller may already be controlling of the engine lock.
+ */
+int engine_unlocked_init(ENGINE *e);
+int engine_unlocked_finish(ENGINE *e, int unlock_for_handlers);
+int engine_free_util(ENGINE *e, int not_locked);
+
+/*
+ * This function will reset all "set"able values in an ENGINE to NULL. This
+ * won't touch reference counts or ex_data, but is equivalent to calling all
+ * the ENGINE_set_***() functions with a NULL value.
+ */
+void engine_set_all_null(ENGINE *e);
+
+/*
+ * NB: Bitwise OR-able values for the "flags" variable in ENGINE are now
+ * exposed in engine.h.
+ */
+
+/* Free up dynamically allocated public key methods associated with ENGINE */
-#endif /* !OPENSSL_NO_HW */
+void engine_pkey_meths_free(ENGINE *e);
+void engine_pkey_asn1_meths_free(ENGINE *e);
+
+/* Once initialisation function */
+extern CRYPTO_ONCE engine_lock_init;
+DECLARE_RUN_ONCE(do_engine_lock_init)
+
+/*
+ * This is a structure for storing implementations of various crypto
+ * algorithms and functions.
+ */
+struct engine_st {
+ const char *id;
+ const char *name;
+ const RSA_METHOD *rsa_meth;
+ const DSA_METHOD *dsa_meth;
+ const DH_METHOD *dh_meth;
+ const EC_KEY_METHOD *ec_meth;
+ const RAND_METHOD *rand_meth;
+ /* Cipher handling is via this callback */
+ ENGINE_CIPHERS_PTR ciphers;
+ /* Digest handling is via this callback */
+ ENGINE_DIGESTS_PTR digests;
+ /* Public key handling via this callback */
+ ENGINE_PKEY_METHS_PTR pkey_meths;
+ /* ASN1 public key handling via this callback */
+ ENGINE_PKEY_ASN1_METHS_PTR pkey_asn1_meths;
+ ENGINE_GEN_INT_FUNC_PTR destroy;
+ ENGINE_GEN_INT_FUNC_PTR init;
+ ENGINE_GEN_INT_FUNC_PTR finish;
+ ENGINE_CTRL_FUNC_PTR ctrl;
+ ENGINE_LOAD_KEY_PTR load_privkey;
+ ENGINE_LOAD_KEY_PTR load_pubkey;
+ ENGINE_SSL_CLIENT_CERT_PTR load_ssl_client_cert;
+ const ENGINE_CMD_DEFN *cmd_defns;
+ int flags;
+ /* reference count on the structure itself */
+ CRYPTO_REF_COUNT struct_ref;
+ /*
+ * reference count on usability of the engine type. NB: This controls the
+ * loading and initialisation of any functionality required by this
+ * engine, whereas the previous count is simply to cope with
+ * (de)allocation of this structure. Hence, running_ref <= struct_ref at
+ * all times.
+ */
+ int funct_ref;
+ /* A place to store per-ENGINE data */
+ CRYPTO_EX_DATA ex_data;
+ /* Used to maintain the linked-list of engines. */
+ struct engine_st *prev;
+ struct engine_st *next;
+};
+
+typedef struct st_engine_pile ENGINE_PILE;
+
+DEFINE_LHASH_OF(ENGINE_PILE);
#ifdef __cplusplus
}
#endif
-#endif /* HEADER_ENGINE_INT_H */
+#endif /* HEADER_ENGINE_INT_H */
projects / openssl.git / blobdiff