/* Copyright (c) 2014, Google Inc.
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*
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* Permission to use, copy, modify, and/or distribute this software for any
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* purpose with or without fee is hereby granted, provided that the above
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* copyright notice and this permission notice appear in all copies.
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*
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* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
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* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
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* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
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* SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
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* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION
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* OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
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* CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. */
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#include <openssl/engine.h>
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#include <string.h>
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#include <assert.h>
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#include <openssl/ec_key.h>
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#include <openssl/err.h>
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#include <openssl/mem.h>
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#include <openssl/rsa.h>
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#include <openssl/thread.h>
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#include "../internal.h"
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struct engine_st {
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RSA_METHOD *rsa_method;
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ECDSA_METHOD *ecdsa_method;
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};
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ENGINE *ENGINE_new(void) {
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ENGINE *engine = OPENSSL_malloc(sizeof(ENGINE));
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if (engine == NULL) {
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return NULL;
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}
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OPENSSL_memset(engine, 0, sizeof(ENGINE));
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return engine;
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}
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void ENGINE_free(ENGINE *engine) {
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// Methods are currently required to be static so are not unref'ed.
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OPENSSL_free(engine);
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}
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// set_method takes a pointer to a method and its given size and sets
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// |*out_member| to point to it. This function might want to be extended in the
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// future to support making a copy of the method so that a stable ABI for
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// ENGINEs can be supported. But, for the moment, all *_METHODS must be
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// static.
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static int set_method(void **out_member, const void *method, size_t method_size,
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size_t compiled_size) {
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const struct openssl_method_common_st *common = method;
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if (method_size != compiled_size || !common->is_static) {
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return 0;
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}
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*out_member = (void*) method;
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return 1;
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}
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int ENGINE_set_RSA_method(ENGINE *engine, const RSA_METHOD *method,
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size_t method_size) {
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return set_method((void **)&engine->rsa_method, method, method_size,
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sizeof(RSA_METHOD));
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}
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RSA_METHOD *ENGINE_get_RSA_method(const ENGINE *engine) {
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return engine->rsa_method;
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}
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int ENGINE_set_ECDSA_method(ENGINE *engine, const ECDSA_METHOD *method,
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size_t method_size) {
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return set_method((void **)&engine->ecdsa_method, method, method_size,
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sizeof(ECDSA_METHOD));
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}
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ECDSA_METHOD *ENGINE_get_ECDSA_method(const ENGINE *engine) {
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return engine->ecdsa_method;
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}
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void METHOD_ref(void *method_in) {
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assert(((struct openssl_method_common_st*) method_in)->is_static);
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}
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void METHOD_unref(void *method_in) {
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struct openssl_method_common_st *method = method_in;
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if (method == NULL) {
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return;
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}
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assert(method->is_static);
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}
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OPENSSL_DECLARE_ERROR_REASON(ENGINE, OPERATION_NOT_SUPPORTED)
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