diff options
Diffstat (limited to 'openssl/crypto/engine/eng_table.c')
-rw-r--r-- | openssl/crypto/engine/eng_table.c | 351 |
1 files changed, 0 insertions, 351 deletions
diff --git a/openssl/crypto/engine/eng_table.c b/openssl/crypto/engine/eng_table.c deleted file mode 100644 index 4fde9481..00000000 --- a/openssl/crypto/engine/eng_table.c +++ /dev/null @@ -1,351 +0,0 @@ -/* ==================================================================== - * Copyright (c) 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 "cryptlib.h" -#include <openssl/evp.h> -#include <openssl/lhash.h> -#include "eng_int.h" - -/* The type of the items in the table */ -typedef struct st_engine_pile - { - /* The 'nid' of this algorithm/mode */ - int nid; - /* ENGINEs that implement this algorithm/mode. */ - STACK_OF(ENGINE) *sk; - /* The default ENGINE to perform this algorithm/mode. */ - ENGINE *funct; - /* Zero if 'sk' is newer than the cached 'funct', non-zero otherwise */ - int uptodate; - } ENGINE_PILE; - -DECLARE_LHASH_OF(ENGINE_PILE); - -/* The type exposed in eng_int.h */ -struct st_engine_table - { - LHASH_OF(ENGINE_PILE) piles; - }; /* ENGINE_TABLE */ - - -typedef struct st_engine_pile_doall - { - engine_table_doall_cb *cb; - void *arg; - } ENGINE_PILE_DOALL; - - -/* Global flags (ENGINE_TABLE_FLAG_***). */ -static unsigned int table_flags = 0; - -/* API function manipulating 'table_flags' */ -unsigned int ENGINE_get_table_flags(void) - { - return table_flags; - } - -void ENGINE_set_table_flags(unsigned int flags) - { - table_flags = flags; - } - -/* Internal functions for the "piles" hash table */ -static unsigned long engine_pile_hash(const ENGINE_PILE *c) - { - return c->nid; - } - -static int engine_pile_cmp(const ENGINE_PILE *a, const ENGINE_PILE *b) - { - return a->nid - b->nid; - } -static IMPLEMENT_LHASH_HASH_FN(engine_pile, ENGINE_PILE) -static IMPLEMENT_LHASH_COMP_FN(engine_pile, ENGINE_PILE) - -static int int_table_check(ENGINE_TABLE **t, int create) - { - LHASH_OF(ENGINE_PILE) *lh; - - if(*t) return 1; - if(!create) return 0; - if((lh = lh_ENGINE_PILE_new()) == NULL) - return 0; - *t = (ENGINE_TABLE *)lh; - return 1; - } - -/* Privately exposed (via eng_int.h) functions for adding and/or removing - * ENGINEs from the implementation table */ -int engine_table_register(ENGINE_TABLE **table, ENGINE_CLEANUP_CB *cleanup, - ENGINE *e, const int *nids, int num_nids, int setdefault) - { - int ret = 0, added = 0; - ENGINE_PILE tmplate, *fnd; - CRYPTO_w_lock(CRYPTO_LOCK_ENGINE); - if(!(*table)) - added = 1; - if(!int_table_check(table, 1)) - goto end; - if(added) - /* The cleanup callback needs to be added */ - engine_cleanup_add_first(cleanup); - while(num_nids--) - { - tmplate.nid = *nids; - fnd = lh_ENGINE_PILE_retrieve(&(*table)->piles, &tmplate); - if(!fnd) - { - fnd = OPENSSL_malloc(sizeof(ENGINE_PILE)); - if(!fnd) goto end; - fnd->uptodate = 1; - fnd->nid = *nids; - fnd->sk = sk_ENGINE_new_null(); - if(!fnd->sk) - { - OPENSSL_free(fnd); - goto end; - } - fnd->funct = NULL; - (void)lh_ENGINE_PILE_insert(&(*table)->piles, fnd); - } - /* A registration shouldn't add duplciate entries */ - (void)sk_ENGINE_delete_ptr(fnd->sk, e); - /* if 'setdefault', this ENGINE goes to the head of the list */ - if(!sk_ENGINE_push(fnd->sk, e)) - goto end; - /* "touch" this ENGINE_PILE */ - fnd->uptodate = 0; - if(setdefault) - { - if(!engine_unlocked_init(e)) - { - ENGINEerr(ENGINE_F_ENGINE_TABLE_REGISTER, - ENGINE_R_INIT_FAILED); - goto end; - } - if(fnd->funct) - engine_unlocked_finish(fnd->funct, 0); - fnd->funct = e; - fnd->uptodate = 1; - } - nids++; - } - ret = 1; -end: - CRYPTO_w_unlock(CRYPTO_LOCK_ENGINE); - return ret; - } -static void int_unregister_cb_doall_arg(ENGINE_PILE *pile, ENGINE *e) - { - int n; - /* Iterate the 'c->sk' stack removing any occurance of 'e' */ - while((n = sk_ENGINE_find(pile->sk, e)) >= 0) - { - (void)sk_ENGINE_delete(pile->sk, n); - pile->uptodate = 0; - } - if(pile->funct == e) - { - engine_unlocked_finish(e, 0); - pile->funct = NULL; - } - } -static IMPLEMENT_LHASH_DOALL_ARG_FN(int_unregister_cb, ENGINE_PILE, ENGINE) - -void engine_table_unregister(ENGINE_TABLE **table, ENGINE *e) - { - CRYPTO_w_lock(CRYPTO_LOCK_ENGINE); - if(int_table_check(table, 0)) - lh_ENGINE_PILE_doall_arg(&(*table)->piles, - LHASH_DOALL_ARG_FN(int_unregister_cb), - ENGINE, e); - CRYPTO_w_unlock(CRYPTO_LOCK_ENGINE); - } - -static void int_cleanup_cb_doall(ENGINE_PILE *p) - { - sk_ENGINE_free(p->sk); - if(p->funct) - engine_unlocked_finish(p->funct, 0); - OPENSSL_free(p); - } -static IMPLEMENT_LHASH_DOALL_FN(int_cleanup_cb, ENGINE_PILE) - -void engine_table_cleanup(ENGINE_TABLE **table) - { - CRYPTO_w_lock(CRYPTO_LOCK_ENGINE); - if(*table) - { - lh_ENGINE_PILE_doall(&(*table)->piles, - LHASH_DOALL_FN(int_cleanup_cb)); - lh_ENGINE_PILE_free(&(*table)->piles); - *table = NULL; - } - CRYPTO_w_unlock(CRYPTO_LOCK_ENGINE); - } - -/* return a functional reference for a given 'nid' */ -#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) -#endif - { - ENGINE *ret = NULL; - ENGINE_PILE tmplate, *fnd=NULL; - int initres, loop = 0; - - if(!(*table)) - { -#ifdef ENGINE_TABLE_DEBUG - fprintf(stderr, "engine_table_dbg: %s:%d, nid=%d, nothing " - "registered!\n", f, l, nid); -#endif - return NULL; - } - ERR_set_mark(); - CRYPTO_w_lock(CRYPTO_LOCK_ENGINE); - /* Check again inside the lock otherwise we could race against cleanup - * operations. But don't worry about a fprintf(stderr). */ - if(!int_table_check(table, 0)) goto end; - tmplate.nid = nid; - fnd = lh_ENGINE_PILE_retrieve(&(*table)->piles, &tmplate); - if(!fnd) goto end; - if(fnd->funct && engine_unlocked_init(fnd->funct)) - { -#ifdef ENGINE_TABLE_DEBUG - fprintf(stderr, "engine_table_dbg: %s:%d, nid=%d, using " - "ENGINE '%s' cached\n", f, l, nid, fnd->funct->id); -#endif - ret = fnd->funct; - goto end; - } - if(fnd->uptodate) - { - ret = fnd->funct; - goto end; - } -trynext: - ret = sk_ENGINE_value(fnd->sk, loop++); - if(!ret) - { -#ifdef ENGINE_TABLE_DEBUG - fprintf(stderr, "engine_table_dbg: %s:%d, nid=%d, no " - "registered implementations would initialise\n", - f, l, nid); -#endif - goto end; - } - /* Try to initialise the ENGINE? */ - if((ret->funct_ref > 0) || !(table_flags & ENGINE_TABLE_FLAG_NOINIT)) - initres = engine_unlocked_init(ret); - else - initres = 0; - if(initres) - { - /* Update 'funct' */ - if((fnd->funct != ret) && engine_unlocked_init(ret)) - { - /* If there was a previous default we release it. */ - if(fnd->funct) - engine_unlocked_finish(fnd->funct, 0); - fnd->funct = ret; -#ifdef ENGINE_TABLE_DEBUG - fprintf(stderr, "engine_table_dbg: %s:%d, nid=%d, " - "setting default to '%s'\n", f, l, nid, ret->id); -#endif - } -#ifdef ENGINE_TABLE_DEBUG - fprintf(stderr, "engine_table_dbg: %s:%d, nid=%d, using " - "newly initialised '%s'\n", f, l, nid, ret->id); -#endif - goto end; - } - goto trynext; -end: - /* If it failed, it is unlikely to succeed again until some future - * registrations have taken place. In all cases, we cache. */ - if(fnd) fnd->uptodate = 1; -#ifdef ENGINE_TABLE_DEBUG - if(ret) - fprintf(stderr, "engine_table_dbg: %s:%d, nid=%d, caching " - "ENGINE '%s'\n", f, l, nid, ret->id); - else - fprintf(stderr, "engine_table_dbg: %s:%d, nid=%d, caching " - "'no matching ENGINE'\n", f, l, nid); -#endif - CRYPTO_w_unlock(CRYPTO_LOCK_ENGINE); - /* Whatever happened, any failed init()s are not failures in this - * context, so clear our error state. */ - ERR_pop_to_mark(); - return ret; - } - -/* Table enumeration */ - -static void int_cb_doall_arg(ENGINE_PILE *pile, ENGINE_PILE_DOALL *dall) - { - dall->cb(pile->nid, pile->sk, pile->funct, dall->arg); - } -static IMPLEMENT_LHASH_DOALL_ARG_FN(int_cb, ENGINE_PILE,ENGINE_PILE_DOALL) - -void engine_table_doall(ENGINE_TABLE *table, engine_table_doall_cb *cb, - void *arg) - { - ENGINE_PILE_DOALL dall; - dall.cb = cb; - dall.arg = arg; - lh_ENGINE_PILE_doall_arg(&table->piles, LHASH_DOALL_ARG_FN(int_cb), - ENGINE_PILE_DOALL, &dall); - } |