| /* 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; |
| } |