--- /dev/null
+/* crypto/engine/eng_lib.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).
+ *
+ */
+
+#include "eng_int.h"
+#include <openssl/rand.h>
+
+/* The "new"/"free" stuff first */
+
+ENGINE *ENGINE_new(void)
+ {
+ ENGINE *ret;
+
+ ret = (ENGINE *)OPENSSL_malloc(sizeof(ENGINE));
+ if(ret == NULL)
+ {
+ ENGINEerr(ENGINE_F_ENGINE_NEW, ERR_R_MALLOC_FAILURE);
+ return NULL;
+ }
+ memset(ret, 0, sizeof(ENGINE));
+ ret->struct_ref = 1;
+ engine_ref_debug(ret, 0, 1)
+ CRYPTO_new_ex_data(CRYPTO_EX_INDEX_ENGINE, ret, &ret->ex_data);
+ return ret;
+ }
+
+/* Placed here (close proximity to ENGINE_new) so that modifications to the
+ * elements of the ENGINE structure are more likely to be caught and changed
+ * here. */
+void engine_set_all_null(ENGINE *e)
+ {
+ e->id = NULL;
+ e->name = NULL;
+ e->rsa_meth = NULL;
+ e->dsa_meth = NULL;
+ e->dh_meth = NULL;
+ e->rand_meth = NULL;
+ e->store_meth = NULL;
+ e->ciphers = NULL;
+ e->digests = NULL;
+ e->destroy = NULL;
+ e->init = NULL;
+ e->finish = NULL;
+ e->ctrl = NULL;
+ e->load_privkey = NULL;
+ e->load_pubkey = NULL;
+ e->cmd_defns = NULL;
+ e->flags = 0;
+ }
+
+int engine_free_util(ENGINE *e, int locked)
+ {
+ int i;
+
+ if(e == NULL)
+ {
+ ENGINEerr(ENGINE_F_ENGINE_FREE_UTIL,
+ ERR_R_PASSED_NULL_PARAMETER);
+ return 0;
+ }
+ if(locked)
+ i = CRYPTO_add(&e->struct_ref,-1,CRYPTO_LOCK_ENGINE);
+ else
+ i = --e->struct_ref;
+ engine_ref_debug(e, 0, -1)
+ if (i > 0) return 1;
+#ifdef REF_CHECK
+ if (i < 0)
+ {
+ fprintf(stderr,"ENGINE_free, bad structural reference count\n");
+ abort();
+ }
+#endif
+ /* Free up any dynamically allocated public key methods */
+ engine_pkey_meths_free(e);
+ engine_pkey_asn1_meths_free(e);
+ /* Give the ENGINE a chance to do any structural cleanup corresponding
+ * to allocation it did in its constructor (eg. unload error strings) */
+ if(e->destroy)
+ e->destroy(e);
+ CRYPTO_free_ex_data(CRYPTO_EX_INDEX_ENGINE, e, &e->ex_data);
+ OPENSSL_free(e);
+ return 1;
+ }
+
+int ENGINE_free(ENGINE *e)
+ {
+ return engine_free_util(e, 1);
+ }
+
+/* Cleanup stuff */
+
+/* ENGINE_cleanup() is coded such that anything that does work that will need
+ * cleanup can register a "cleanup" callback here. That way we don't get linker
+ * bloat by referring to all *possible* cleanups, but any linker bloat into code
+ * "X" will cause X's cleanup function to end up here. */
+static STACK_OF(ENGINE_CLEANUP_ITEM) *cleanup_stack = NULL;
+static int int_cleanup_check(int create)
+ {
+ if(cleanup_stack) return 1;
+ if(!create) return 0;
+ cleanup_stack = sk_ENGINE_CLEANUP_ITEM_new_null();
+ return (cleanup_stack ? 1 : 0);
+ }
+static ENGINE_CLEANUP_ITEM *int_cleanup_item(ENGINE_CLEANUP_CB *cb)
+ {
+ ENGINE_CLEANUP_ITEM *item = OPENSSL_malloc(sizeof(
+ ENGINE_CLEANUP_ITEM));
+ if(!item) return NULL;
+ item->cb = cb;
+ return item;
+ }
+void engine_cleanup_add_first(ENGINE_CLEANUP_CB *cb)
+ {
+ ENGINE_CLEANUP_ITEM *item;
+ if(!int_cleanup_check(1)) return;
+ item = int_cleanup_item(cb);
+ if(item)
+ sk_ENGINE_CLEANUP_ITEM_insert(cleanup_stack, item, 0);
+ }
+void engine_cleanup_add_last(ENGINE_CLEANUP_CB *cb)
+ {
+ ENGINE_CLEANUP_ITEM *item;
+ if(!int_cleanup_check(1)) return;
+ item = int_cleanup_item(cb);
+ if(item)
+ sk_ENGINE_CLEANUP_ITEM_push(cleanup_stack, item);
+ }
+/* The API function that performs all cleanup */
+static void engine_cleanup_cb_free(ENGINE_CLEANUP_ITEM *item)
+ {
+ (*(item->cb))();
+ OPENSSL_free(item);
+ }
+void ENGINE_cleanup(void)
+ {
+ if(int_cleanup_check(0))
+ {
+ sk_ENGINE_CLEANUP_ITEM_pop_free(cleanup_stack,
+ engine_cleanup_cb_free);
+ cleanup_stack = NULL;
+ }
+ /* FIXME: This should be handled (somehow) through RAND, eg. by it
+ * registering a cleanup callback. */
+ RAND_set_rand_method(NULL);
+ }
+
+/* Now the "ex_data" support */
+
+int ENGINE_get_ex_new_index(long argl, void *argp, CRYPTO_EX_new *new_func,
+ CRYPTO_EX_dup *dup_func, CRYPTO_EX_free *free_func)
+ {
+ return CRYPTO_get_ex_new_index(CRYPTO_EX_INDEX_ENGINE, argl, argp,
+ new_func, dup_func, free_func);
+ }
+
+int ENGINE_set_ex_data(ENGINE *e, int idx, void *arg)
+ {
+ return(CRYPTO_set_ex_data(&e->ex_data, idx, arg));
+ }
+
+void *ENGINE_get_ex_data(const ENGINE *e, int idx)
+ {
+ return(CRYPTO_get_ex_data(&e->ex_data, idx));
+ }
+
+/* Functions to get/set an ENGINE's elements - mainly to avoid exposing the
+ * ENGINE structure itself. */
+
+int ENGINE_set_id(ENGINE *e, const char *id)
+ {
+ if(id == NULL)
+ {
+ ENGINEerr(ENGINE_F_ENGINE_SET_ID,
+ ERR_R_PASSED_NULL_PARAMETER);
+ return 0;
+ }
+ e->id = id;
+ return 1;
+ }
+
+int ENGINE_set_name(ENGINE *e, const char *name)
+ {
+ if(name == NULL)
+ {
+ ENGINEerr(ENGINE_F_ENGINE_SET_NAME,
+ ERR_R_PASSED_NULL_PARAMETER);
+ return 0;
+ }
+ e->name = name;
+ return 1;
+ }
+
+int ENGINE_set_destroy_function(ENGINE *e, ENGINE_GEN_INT_FUNC_PTR destroy_f)
+ {
+ e->destroy = destroy_f;
+ return 1;
+ }
+
+int ENGINE_set_init_function(ENGINE *e, ENGINE_GEN_INT_FUNC_PTR init_f)
+ {
+ e->init = init_f;
+ return 1;
+ }
+
+int ENGINE_set_finish_function(ENGINE *e, ENGINE_GEN_INT_FUNC_PTR finish_f)
+ {
+ e->finish = finish_f;
+ return 1;
+ }
+
+int ENGINE_set_ctrl_function(ENGINE *e, ENGINE_CTRL_FUNC_PTR ctrl_f)
+ {
+ e->ctrl = ctrl_f;
+ return 1;
+ }
+
+int ENGINE_set_flags(ENGINE *e, int flags)
+ {
+ e->flags = flags;
+ return 1;
+ }
+
+int ENGINE_set_cmd_defns(ENGINE *e, const ENGINE_CMD_DEFN *defns)
+ {
+ e->cmd_defns = defns;
+ return 1;
+ }
+
+const char *ENGINE_get_id(const ENGINE *e)
+ {
+ return e->id;
+ }
+
+const char *ENGINE_get_name(const ENGINE *e)
+ {
+ return e->name;
+ }
+
+ENGINE_GEN_INT_FUNC_PTR ENGINE_get_destroy_function(const ENGINE *e)
+ {
+ return e->destroy;
+ }
+
+ENGINE_GEN_INT_FUNC_PTR ENGINE_get_init_function(const ENGINE *e)
+ {
+ return e->init;
+ }
+
+ENGINE_GEN_INT_FUNC_PTR ENGINE_get_finish_function(const ENGINE *e)
+ {
+ return e->finish;
+ }
+
+ENGINE_CTRL_FUNC_PTR ENGINE_get_ctrl_function(const ENGINE *e)
+ {
+ return e->ctrl;
+ }
+
+int ENGINE_get_flags(const ENGINE *e)
+ {
+ return e->flags;
+ }
+
+const ENGINE_CMD_DEFN *ENGINE_get_cmd_defns(const ENGINE *e)
+ {
+ return e->cmd_defns;
+ }
+
+/* eng_lib.o is pretty much linked into anything that touches ENGINE already, so
+ * put the "static_state" hack here. */
+
+static int internal_static_hack = 0;
+
+void *ENGINE_get_static_state(void)
+ {
+ return &internal_static_hack;
+ }
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