diff options
Diffstat (limited to 'openssl/crypto/engine/eng_list.c')
| -rw-r--r-- | openssl/crypto/engine/eng_list.c | 618 |
1 files changed, 294 insertions, 324 deletions
diff --git a/openssl/crypto/engine/eng_list.c b/openssl/crypto/engine/eng_list.c index 95c858960..3384e3182 100644 --- a/openssl/crypto/engine/eng_list.c +++ b/openssl/crypto/engine/eng_list.c @@ -1,6 +1,7 @@ /* crypto/engine/eng_list.c */ -/* Written by Geoff Thorpe (geoff@geoffthorpe.net) for the OpenSSL - * project 2000. +/* + * Written by Geoff Thorpe (geoff@geoffthorpe.net) for the OpenSSL project + * 2000. */ /* ==================================================================== * Copyright (c) 1999-2001 The OpenSSL Project. All rights reserved. @@ -10,7 +11,7 @@ * are met: * * 1. Redistributions of source code must retain the above copyright - * notice, this list of conditions and the following disclaimer. + * 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 @@ -57,378 +58,347 @@ */ /* ==================================================================== * Copyright 2002 Sun Microsystems, Inc. ALL RIGHTS RESERVED. - * ECDH support in OpenSSL originally developed by + * ECDH support in OpenSSL originally developed by * SUN MICROSYSTEMS, INC., and contributed to the OpenSSL project. */ #include "eng_int.h" -/* The linked-list of pointers to engine types. engine_list_head - * incorporates an implicit structural reference but engine_list_tail - * does not - the latter is a computational niceity and only points - * to something that is already pointed to by its predecessor in the - * list (or engine_list_head itself). In the same way, the use of the - * "prev" pointer in each ENGINE is to save excessive list iteration, - * it doesn't correspond to an extra structural reference. Hence, - * engine_list_head, and each non-null "next" pointer account for - * the list itself assuming exactly 1 structural reference on each - * list member. */ +/* + * The linked-list of pointers to engine types. engine_list_head incorporates + * an implicit structural reference but engine_list_tail does not - the + * latter is a computational niceity and only points to something that is + * already pointed to by its predecessor in the list (or engine_list_head + * itself). In the same way, the use of the "prev" pointer in each ENGINE is + * to save excessive list iteration, it doesn't correspond to an extra + * structural reference. Hence, engine_list_head, and each non-null "next" + * pointer account for the list itself assuming exactly 1 structural + * reference on each list member. + */ static ENGINE *engine_list_head = NULL; static ENGINE *engine_list_tail = NULL; -/* This cleanup function is only needed internally. If it should be called, we - * register it with the "ENGINE_cleanup()" stack to be called during cleanup. */ +/* + * This cleanup function is only needed internally. If it should be called, + * we register it with the "ENGINE_cleanup()" stack to be called during + * cleanup. + */ static void engine_list_cleanup(void) - { - ENGINE *iterator = engine_list_head; +{ + ENGINE *iterator = engine_list_head; - while(iterator != NULL) - { - ENGINE_remove(iterator); - iterator = engine_list_head; - } - return; - } + while (iterator != NULL) { + ENGINE_remove(iterator); + iterator = engine_list_head; + } + return; +} -/* These static functions starting with a lower case "engine_" always - * take place when CRYPTO_LOCK_ENGINE has been locked up. */ +/* + * These static functions starting with a lower case "engine_" always take + * place when CRYPTO_LOCK_ENGINE has been locked up. + */ static int engine_list_add(ENGINE *e) - { - int conflict = 0; - ENGINE *iterator = NULL; +{ + int conflict = 0; + ENGINE *iterator = NULL; - if(e == NULL) - { - ENGINEerr(ENGINE_F_ENGINE_LIST_ADD, - ERR_R_PASSED_NULL_PARAMETER); - return 0; - } - iterator = engine_list_head; - while(iterator && !conflict) - { - conflict = (strcmp(iterator->id, e->id) == 0); - iterator = iterator->next; - } - if(conflict) - { - ENGINEerr(ENGINE_F_ENGINE_LIST_ADD, - ENGINE_R_CONFLICTING_ENGINE_ID); - return 0; - } - if(engine_list_head == NULL) - { - /* We are adding to an empty list. */ - if(engine_list_tail) - { - ENGINEerr(ENGINE_F_ENGINE_LIST_ADD, - ENGINE_R_INTERNAL_LIST_ERROR); - return 0; - } - engine_list_head = e; - e->prev = NULL; - /* The first time the list allocates, we should register the - * cleanup. */ - engine_cleanup_add_last(engine_list_cleanup); - } - else - { - /* We are adding to the tail of an existing list. */ - if((engine_list_tail == NULL) || - (engine_list_tail->next != NULL)) - { - ENGINEerr(ENGINE_F_ENGINE_LIST_ADD, - ENGINE_R_INTERNAL_LIST_ERROR); - return 0; - } - engine_list_tail->next = e; - e->prev = engine_list_tail; - } - /* Having the engine in the list assumes a structural - * reference. */ - e->struct_ref++; - engine_ref_debug(e, 0, 1) - /* However it came to be, e is the last item in the list. */ - engine_list_tail = e; - e->next = NULL; - return 1; - } + if (e == NULL) { + ENGINEerr(ENGINE_F_ENGINE_LIST_ADD, ERR_R_PASSED_NULL_PARAMETER); + return 0; + } + iterator = engine_list_head; + while (iterator && !conflict) { + conflict = (strcmp(iterator->id, e->id) == 0); + iterator = iterator->next; + } + if (conflict) { + ENGINEerr(ENGINE_F_ENGINE_LIST_ADD, ENGINE_R_CONFLICTING_ENGINE_ID); + return 0; + } + if (engine_list_head == NULL) { + /* We are adding to an empty list. */ + if (engine_list_tail) { + ENGINEerr(ENGINE_F_ENGINE_LIST_ADD, ENGINE_R_INTERNAL_LIST_ERROR); + return 0; + } + engine_list_head = e; + e->prev = NULL; + /* + * The first time the list allocates, we should register the cleanup. + */ + engine_cleanup_add_last(engine_list_cleanup); + } else { + /* We are adding to the tail of an existing list. */ + if ((engine_list_tail == NULL) || (engine_list_tail->next != NULL)) { + ENGINEerr(ENGINE_F_ENGINE_LIST_ADD, ENGINE_R_INTERNAL_LIST_ERROR); + return 0; + } + engine_list_tail->next = e; + e->prev = engine_list_tail; + } + /* + * Having the engine in the list assumes a structural reference. + */ + e->struct_ref++; + engine_ref_debug(e, 0, 1) + /* However it came to be, e is the last item in the list. */ + engine_list_tail = e; + e->next = NULL; + return 1; +} static int engine_list_remove(ENGINE *e) - { - ENGINE *iterator; +{ + ENGINE *iterator; - if(e == NULL) - { - ENGINEerr(ENGINE_F_ENGINE_LIST_REMOVE, - ERR_R_PASSED_NULL_PARAMETER); - return 0; - } - /* We need to check that e is in our linked list! */ - iterator = engine_list_head; - while(iterator && (iterator != e)) - iterator = iterator->next; - if(iterator == NULL) - { - ENGINEerr(ENGINE_F_ENGINE_LIST_REMOVE, - ENGINE_R_ENGINE_IS_NOT_IN_LIST); - return 0; - } - /* un-link e from the chain. */ - if(e->next) - e->next->prev = e->prev; - if(e->prev) - e->prev->next = e->next; - /* Correct our head/tail if necessary. */ - if(engine_list_head == e) - engine_list_head = e->next; - if(engine_list_tail == e) - engine_list_tail = e->prev; - engine_free_util(e, 0); - return 1; - } + if (e == NULL) { + ENGINEerr(ENGINE_F_ENGINE_LIST_REMOVE, ERR_R_PASSED_NULL_PARAMETER); + return 0; + } + /* We need to check that e is in our linked list! */ + iterator = engine_list_head; + while (iterator && (iterator != e)) + iterator = iterator->next; + if (iterator == NULL) { + ENGINEerr(ENGINE_F_ENGINE_LIST_REMOVE, + ENGINE_R_ENGINE_IS_NOT_IN_LIST); + return 0; + } + /* un-link e from the chain. */ + if (e->next) + e->next->prev = e->prev; + if (e->prev) + e->prev->next = e->next; + /* Correct our head/tail if necessary. */ + if (engine_list_head == e) + engine_list_head = e->next; + if (engine_list_tail == e) + engine_list_tail = e->prev; + engine_free_util(e, 0); + return 1; +} /* Get the first/last "ENGINE" type available. */ ENGINE *ENGINE_get_first(void) - { - ENGINE *ret; +{ + ENGINE *ret; - CRYPTO_w_lock(CRYPTO_LOCK_ENGINE); - ret = engine_list_head; - if(ret) - { - ret->struct_ref++; - engine_ref_debug(ret, 0, 1) - } - CRYPTO_w_unlock(CRYPTO_LOCK_ENGINE); - return ret; - } + CRYPTO_w_lock(CRYPTO_LOCK_ENGINE); + ret = engine_list_head; + if (ret) { + ret->struct_ref++; + engine_ref_debug(ret, 0, 1) + } + CRYPTO_w_unlock(CRYPTO_LOCK_ENGINE); + return ret; +} ENGINE *ENGINE_get_last(void) - { - ENGINE *ret; +{ + ENGINE *ret; - CRYPTO_w_lock(CRYPTO_LOCK_ENGINE); - ret = engine_list_tail; - if(ret) - { - ret->struct_ref++; - engine_ref_debug(ret, 0, 1) - } - CRYPTO_w_unlock(CRYPTO_LOCK_ENGINE); - return ret; - } + CRYPTO_w_lock(CRYPTO_LOCK_ENGINE); + ret = engine_list_tail; + if (ret) { + ret->struct_ref++; + engine_ref_debug(ret, 0, 1) + } + CRYPTO_w_unlock(CRYPTO_LOCK_ENGINE); + return ret; +} /* Iterate to the next/previous "ENGINE" type (NULL = end of the list). */ ENGINE *ENGINE_get_next(ENGINE *e) - { - ENGINE *ret = NULL; - if(e == NULL) - { - ENGINEerr(ENGINE_F_ENGINE_GET_NEXT, - ERR_R_PASSED_NULL_PARAMETER); - return 0; - } - CRYPTO_w_lock(CRYPTO_LOCK_ENGINE); - ret = e->next; - if(ret) - { - /* Return a valid structural refernce to the next ENGINE */ - ret->struct_ref++; - engine_ref_debug(ret, 0, 1) - } - CRYPTO_w_unlock(CRYPTO_LOCK_ENGINE); - /* Release the structural reference to the previous ENGINE */ - ENGINE_free(e); - return ret; - } +{ + ENGINE *ret = NULL; + if (e == NULL) { + ENGINEerr(ENGINE_F_ENGINE_GET_NEXT, ERR_R_PASSED_NULL_PARAMETER); + return 0; + } + CRYPTO_w_lock(CRYPTO_LOCK_ENGINE); + ret = e->next; + if (ret) { + /* Return a valid structural refernce to the next ENGINE */ + ret->struct_ref++; + engine_ref_debug(ret, 0, 1) + } + CRYPTO_w_unlock(CRYPTO_LOCK_ENGINE); + /* Release the structural reference to the previous ENGINE */ + ENGINE_free(e); + return ret; +} ENGINE *ENGINE_get_prev(ENGINE *e) - { - ENGINE *ret = NULL; - if(e == NULL) - { - ENGINEerr(ENGINE_F_ENGINE_GET_PREV, - ERR_R_PASSED_NULL_PARAMETER); - return 0; - } - CRYPTO_w_lock(CRYPTO_LOCK_ENGINE); - ret = e->prev; - if(ret) - { - /* Return a valid structural reference to the next ENGINE */ - ret->struct_ref++; - engine_ref_debug(ret, 0, 1) - } - CRYPTO_w_unlock(CRYPTO_LOCK_ENGINE); - /* Release the structural reference to the previous ENGINE */ - ENGINE_free(e); - return ret; - } +{ + ENGINE *ret = NULL; + if (e == NULL) { + ENGINEerr(ENGINE_F_ENGINE_GET_PREV, ERR_R_PASSED_NULL_PARAMETER); + return 0; + } + CRYPTO_w_lock(CRYPTO_LOCK_ENGINE); + ret = e->prev; + if (ret) { + /* Return a valid structural reference to the next ENGINE */ + ret->struct_ref++; + engine_ref_debug(ret, 0, 1) + } + CRYPTO_w_unlock(CRYPTO_LOCK_ENGINE); + /* Release the structural reference to the previous ENGINE */ + ENGINE_free(e); + return ret; +} /* Add another "ENGINE" type into the list. */ int ENGINE_add(ENGINE *e) - { - int to_return = 1; - if(e == NULL) - { - ENGINEerr(ENGINE_F_ENGINE_ADD, - ERR_R_PASSED_NULL_PARAMETER); - return 0; - } - if((e->id == NULL) || (e->name == NULL)) - { - ENGINEerr(ENGINE_F_ENGINE_ADD, - ENGINE_R_ID_OR_NAME_MISSING); - } - CRYPTO_w_lock(CRYPTO_LOCK_ENGINE); - if(!engine_list_add(e)) - { - ENGINEerr(ENGINE_F_ENGINE_ADD, - ENGINE_R_INTERNAL_LIST_ERROR); - to_return = 0; - } - CRYPTO_w_unlock(CRYPTO_LOCK_ENGINE); - return to_return; - } +{ + int to_return = 1; + if (e == NULL) { + ENGINEerr(ENGINE_F_ENGINE_ADD, ERR_R_PASSED_NULL_PARAMETER); + return 0; + } + if ((e->id == NULL) || (e->name == NULL)) { + ENGINEerr(ENGINE_F_ENGINE_ADD, ENGINE_R_ID_OR_NAME_MISSING); + } + CRYPTO_w_lock(CRYPTO_LOCK_ENGINE); + if (!engine_list_add(e)) { + ENGINEerr(ENGINE_F_ENGINE_ADD, ENGINE_R_INTERNAL_LIST_ERROR); + to_return = 0; + } + CRYPTO_w_unlock(CRYPTO_LOCK_ENGINE); + return to_return; +} /* Remove an existing "ENGINE" type from the array. */ int ENGINE_remove(ENGINE *e) - { - int to_return = 1; - if(e == NULL) - { - ENGINEerr(ENGINE_F_ENGINE_REMOVE, - ERR_R_PASSED_NULL_PARAMETER); - return 0; - } - CRYPTO_w_lock(CRYPTO_LOCK_ENGINE); - if(!engine_list_remove(e)) - { - ENGINEerr(ENGINE_F_ENGINE_REMOVE, - ENGINE_R_INTERNAL_LIST_ERROR); - to_return = 0; - } - CRYPTO_w_unlock(CRYPTO_LOCK_ENGINE); - return to_return; - } +{ + int to_return = 1; + if (e == NULL) { + ENGINEerr(ENGINE_F_ENGINE_REMOVE, ERR_R_PASSED_NULL_PARAMETER); + return 0; + } + CRYPTO_w_lock(CRYPTO_LOCK_ENGINE); + if (!engine_list_remove(e)) { + ENGINEerr(ENGINE_F_ENGINE_REMOVE, ENGINE_R_INTERNAL_LIST_ERROR); + to_return = 0; + } + CRYPTO_w_unlock(CRYPTO_LOCK_ENGINE); + return to_return; +} static void engine_cpy(ENGINE *dest, const ENGINE *src) - { - dest->id = src->id; - dest->name = src->name; +{ + dest->id = src->id; + dest->name = src->name; #ifndef OPENSSL_NO_RSA - dest->rsa_meth = src->rsa_meth; + dest->rsa_meth = src->rsa_meth; #endif #ifndef OPENSSL_NO_DSA - dest->dsa_meth = src->dsa_meth; + dest->dsa_meth = src->dsa_meth; #endif #ifndef OPENSSL_NO_DH - dest->dh_meth = src->dh_meth; + dest->dh_meth = src->dh_meth; #endif #ifndef OPENSSL_NO_ECDH - dest->ecdh_meth = src->ecdh_meth; + dest->ecdh_meth = src->ecdh_meth; #endif #ifndef OPENSSL_NO_ECDSA - dest->ecdsa_meth = src->ecdsa_meth; + dest->ecdsa_meth = src->ecdsa_meth; #endif - dest->rand_meth = src->rand_meth; - dest->store_meth = src->store_meth; - dest->ciphers = src->ciphers; - dest->digests = src->digests; - dest->pkey_meths = src->pkey_meths; - dest->destroy = src->destroy; - dest->init = src->init; - dest->finish = src->finish; - dest->ctrl = src->ctrl; - dest->load_privkey = src->load_privkey; - dest->load_pubkey = src->load_pubkey; - dest->cmd_defns = src->cmd_defns; - dest->flags = src->flags; - } + dest->rand_meth = src->rand_meth; + dest->store_meth = src->store_meth; + dest->ciphers = src->ciphers; + dest->digests = src->digests; + dest->pkey_meths = src->pkey_meths; + dest->destroy = src->destroy; + dest->init = src->init; + dest->finish = src->finish; + dest->ctrl = src->ctrl; + dest->load_privkey = src->load_privkey; + dest->load_pubkey = src->load_pubkey; + dest->cmd_defns = src->cmd_defns; + dest->flags = src->flags; +} ENGINE *ENGINE_by_id(const char *id) - { - ENGINE *iterator; - char *load_dir = NULL; - if(id == NULL) - { - ENGINEerr(ENGINE_F_ENGINE_BY_ID, - ERR_R_PASSED_NULL_PARAMETER); - return NULL; - } - CRYPTO_w_lock(CRYPTO_LOCK_ENGINE); - iterator = engine_list_head; - while(iterator && (strcmp(id, iterator->id) != 0)) - iterator = iterator->next; - if(iterator) - { - /* We need to return a structural reference. If this is an - * ENGINE type that returns copies, make a duplicate - otherwise - * increment the existing ENGINE's reference count. */ - if(iterator->flags & ENGINE_FLAGS_BY_ID_COPY) - { - ENGINE *cp = ENGINE_new(); - if(!cp) - iterator = NULL; - else - { - engine_cpy(cp, iterator); - iterator = cp; - } - } - else - { - iterator->struct_ref++; - engine_ref_debug(iterator, 0, 1) - } - } - CRYPTO_w_unlock(CRYPTO_LOCK_ENGINE); +{ + ENGINE *iterator; + char *load_dir = NULL; + if (id == NULL) { + ENGINEerr(ENGINE_F_ENGINE_BY_ID, ERR_R_PASSED_NULL_PARAMETER); + return NULL; + } + CRYPTO_w_lock(CRYPTO_LOCK_ENGINE); + iterator = engine_list_head; + while (iterator && (strcmp(id, iterator->id) != 0)) + iterator = iterator->next; + if (iterator) { + /* + * We need to return a structural reference. If this is an ENGINE + * type that returns copies, make a duplicate - otherwise increment + * the existing ENGINE's reference count. + */ + if (iterator->flags & ENGINE_FLAGS_BY_ID_COPY) { + ENGINE *cp = ENGINE_new(); + if (!cp) + iterator = NULL; + else { + engine_cpy(cp, iterator); + iterator = cp; + } + } else { + iterator->struct_ref++; + engine_ref_debug(iterator, 0, 1) + } + } + CRYPTO_w_unlock(CRYPTO_LOCK_ENGINE); #if 0 - if(iterator == NULL) - { - ENGINEerr(ENGINE_F_ENGINE_BY_ID, - ENGINE_R_NO_SUCH_ENGINE); - ERR_add_error_data(2, "id=", id); - } - return iterator; + if (iterator == NULL) { + ENGINEerr(ENGINE_F_ENGINE_BY_ID, ENGINE_R_NO_SUCH_ENGINE); + ERR_add_error_data(2, "id=", id); + } + return iterator; #else - /* EEK! Experimental code starts */ - if(iterator) return iterator; - /* Prevent infinite recusrion if we're looking for the dynamic engine. */ - if (strcmp(id, "dynamic")) - { -#ifdef OPENSSL_SYS_VMS - if((load_dir = getenv("OPENSSL_ENGINES")) == 0) load_dir = "SSLROOT:[ENGINES]"; -#else - if((load_dir = getenv("OPENSSL_ENGINES")) == 0) load_dir = ENGINESDIR; -#endif - iterator = ENGINE_by_id("dynamic"); - if(!iterator || !ENGINE_ctrl_cmd_string(iterator, "ID", id, 0) || - !ENGINE_ctrl_cmd_string(iterator, "DIR_LOAD", "2", 0) || - !ENGINE_ctrl_cmd_string(iterator, "DIR_ADD", - load_dir, 0) || - !ENGINE_ctrl_cmd_string(iterator, "LIST_ADD", "1", 0) || - !ENGINE_ctrl_cmd_string(iterator, "LOAD", NULL, 0)) - goto notfound; - return iterator; - } -notfound: - ENGINE_free(iterator); - ENGINEerr(ENGINE_F_ENGINE_BY_ID,ENGINE_R_NO_SUCH_ENGINE); - ERR_add_error_data(2, "id=", id); - return NULL; - /* EEK! Experimental code ends */ + /* EEK! Experimental code starts */ + if (iterator) + return iterator; + /* + * Prevent infinite recusrion if we're looking for the dynamic engine. + */ + if (strcmp(id, "dynamic")) { +# ifdef OPENSSL_SYS_VMS + if ((load_dir = getenv("OPENSSL_ENGINES")) == 0) + load_dir = "SSLROOT:[ENGINES]"; +# else + if ((load_dir = getenv("OPENSSL_ENGINES")) == 0) + load_dir = ENGINESDIR; +# endif + iterator = ENGINE_by_id("dynamic"); + if (!iterator || !ENGINE_ctrl_cmd_string(iterator, "ID", id, 0) || + !ENGINE_ctrl_cmd_string(iterator, "DIR_LOAD", "2", 0) || + !ENGINE_ctrl_cmd_string(iterator, "DIR_ADD", + load_dir, 0) || + !ENGINE_ctrl_cmd_string(iterator, "LIST_ADD", "1", 0) || + !ENGINE_ctrl_cmd_string(iterator, "LOAD", NULL, 0)) + goto notfound; + return iterator; + } + notfound: + ENGINE_free(iterator); + ENGINEerr(ENGINE_F_ENGINE_BY_ID, ENGINE_R_NO_SUCH_ENGINE); + ERR_add_error_data(2, "id=", id); + return NULL; + /* EEK! Experimental code ends */ #endif - } +} int ENGINE_up_ref(ENGINE *e) - { - if (e == NULL) - { - ENGINEerr(ENGINE_F_ENGINE_UP_REF,ERR_R_PASSED_NULL_PARAMETER); - return 0; - } - CRYPTO_add(&e->struct_ref,1,CRYPTO_LOCK_ENGINE); - return 1; - } +{ + if (e == NULL) { + ENGINEerr(ENGINE_F_ENGINE_UP_REF, ERR_R_PASSED_NULL_PARAMETER); + return 0; + } + CRYPTO_add(&e->struct_ref, 1, CRYPTO_LOCK_ENGINE); + return 1; +} |