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/*
* Copyright (C) 2013 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#include "UniquePtr.h"
#include <stdarg.h>
#include <string.h>
#include <unistd.h>
#include <openssl/objects.h>
#include <openssl/engine.h>
#include <openssl/evp.h>
#include <openssl/pem.h>
#define DYNAMIC_ENGINE
#define TEST_ENGINE_ID "javacoretests"
#define TEST_ENGINE_NAME "libcore test engine"
struct RSA_Delete {
void operator()(RSA* p) const {
RSA_free(p);
}
};
typedef UniquePtr<RSA, RSA_Delete> Unique_RSA;
static const char* HMAC_TAG = "-HMAC-";
static const size_t HMAC_TAG_LEN = strlen(HMAC_TAG);
static EVP_PKEY *test_load_key(ENGINE* e, const char *key_id,
EVP_PKEY* (*read_func)(BIO*, EVP_PKEY**, pem_password_cb*, void*)) {
void* data = static_cast<void*>(const_cast<char*>(key_id));
EVP_PKEY *key = NULL;
const size_t key_len = strlen(key_id);
if (key_len > HMAC_TAG_LEN && !strncmp(key_id, HMAC_TAG, HMAC_TAG_LEN)) {
key = EVP_PKEY_new_mac_key(EVP_PKEY_HMAC, e, reinterpret_cast<const unsigned char*>(key_id),
key_len);
} else {
BIO* in = BIO_new_mem_buf(data, strlen(key_id));
if (!in) {
return NULL;
}
key = read_func(in, NULL, 0, NULL);
BIO_free(in);
if (key != NULL && EVP_PKEY_type(key->type) == EVP_PKEY_RSA) {
ENGINE_init(e);
Unique_RSA rsa(EVP_PKEY_get1_RSA(key));
rsa->engine = e;
rsa->flags |= RSA_FLAG_EXT_PKEY;
}
}
return key;
}
static EVP_PKEY* test_load_privkey(ENGINE* e, const char* key_id, UI_METHOD*, void*) {
return test_load_key(e, key_id, PEM_read_bio_PrivateKey);
}
static EVP_PKEY* test_load_pubkey(ENGINE* e, const char* key_id, UI_METHOD*, void*) {
return test_load_key(e, key_id, PEM_read_bio_PUBKEY);
}
static const int meths[] = {
EVP_PKEY_HMAC,
};
static int pkey_meths(ENGINE*, EVP_PKEY_METHOD** meth, const int** nids, int nid) {
if (nid == EVP_PKEY_HMAC) {
*meth = const_cast<EVP_PKEY_METHOD*>(EVP_PKEY_meth_find(nid));
return 1;
} else if (nid != 0) {
return 0;
}
if (nids != NULL) {
*nids = meths;
return 1;
}
return 0;
}
static int test_engine_setup(ENGINE* e) {
if (!ENGINE_set_id(e, TEST_ENGINE_ID)
|| !ENGINE_set_name(e, TEST_ENGINE_NAME)
|| !ENGINE_set_flags(e, 0)
|| !ENGINE_set_RSA(e, RSA_get_default_method())
|| !ENGINE_set_load_privkey_function(e, test_load_privkey)
|| !ENGINE_set_load_pubkey_function(e, test_load_pubkey)
|| !ENGINE_set_pkey_meths(e, pkey_meths)) {
return 0;
}
return 1;
}
static int test_engine_bind_fn(ENGINE *e, const char *id) {
if (id && (strcmp(id, TEST_ENGINE_ID) != 0)) {
return 0;
}
if (!test_engine_setup(e)) {
return 0;
}
return 1;
}
extern "C" {
#undef OPENSSL_EXPORT
#define OPENSSL_EXPORT extern __attribute__ ((visibility ("default")))
IMPLEMENT_DYNAMIC_CHECK_FN()
IMPLEMENT_DYNAMIC_BIND_FN(test_engine_bind_fn)
};
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