diff options
Diffstat (limited to 'openssl/crypto/engine/eng_lib.c')
| -rw-r--r-- | openssl/crypto/engine/eng_lib.c | 329 |
1 files changed, 329 insertions, 0 deletions
diff --git a/openssl/crypto/engine/eng_lib.c b/openssl/crypto/engine/eng_lib.c new file mode 100644 index 000000000..5815b867f --- /dev/null +++ b/openssl/crypto/engine/eng_lib.c @@ -0,0 +1,329 @@ +/* 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 + /* 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; + } |