Mini Shell
/*
* Copyright 2021-2022 The OpenSSL Project Authors. All Rights Reserved.
*
* Licensed under the Apache License 2.0 (the "License"). You may not use
* this file except in compliance with the License. You can obtain a copy
* in the file LICENSE in the source distribution or at
* https://www.openssl.org/source/license.html
*/
#include <openssl/crypto.h>
#include <openssl/provider.h>
#include <openssl/decoder.h>
#include <openssl/encoder.h>
#include <openssl/store.h>
#include <openssl/rand.h>
#include <openssl/core_names.h>
#include "testutil.h"
static int dummy_decoder_decode(void *ctx, OSSL_CORE_BIO *cin, int selection,
OSSL_CALLBACK *object_cb, void *object_cbarg,
OSSL_PASSPHRASE_CALLBACK *pw_cb, void *pw_cbarg)
{
return 0;
}
static const OSSL_DISPATCH dummy_decoder_functions[] = {
{ OSSL_FUNC_DECODER_DECODE, (void (*)(void))dummy_decoder_decode },
{ 0, NULL }
};
static const OSSL_ALGORITHM dummy_decoders[] = {
{ "DUMMY", "provider=dummy,input=pem", dummy_decoder_functions },
{ NULL, NULL, NULL }
};
static int dummy_encoder_encode(void *ctx, OSSL_CORE_BIO *out,
const void *obj_raw,
const OSSL_PARAM obj_abstract[], int selection,
OSSL_PASSPHRASE_CALLBACK *cb, void *cbarg)
{
return 0;
}
static const OSSL_DISPATCH dummy_encoder_functions[] = {
{ OSSL_FUNC_DECODER_DECODE, (void (*)(void))dummy_encoder_encode },
{ 0, NULL }
};
static const OSSL_ALGORITHM dummy_encoders[] = {
{ "DUMMY", "provider=dummy,output=pem", dummy_encoder_functions },
{ NULL, NULL, NULL }
};
static void *dummy_store_open(void *provctx, const char *uri)
{
return NULL;
}
static int dummy_store_load(void *loaderctx, OSSL_CALLBACK *object_cb,
void *object_cbarg, OSSL_PASSPHRASE_CALLBACK *pw_cb,
void *pw_cbarg)
{
return 0;
}
static int dumm_store_eof(void *loaderctx)
{
return 0;
}
static int dummy_store_close(void *loaderctx)
{
return 0;
}
static const OSSL_DISPATCH dummy_store_functions[] = {
{ OSSL_FUNC_STORE_OPEN, (void (*)(void))dummy_store_open },
{ OSSL_FUNC_STORE_LOAD, (void (*)(void))dummy_store_load },
{ OSSL_FUNC_STORE_EOF, (void (*)(void))dumm_store_eof },
{ OSSL_FUNC_STORE_CLOSE, (void (*)(void))dummy_store_close },
{ 0, NULL }
};
static const OSSL_ALGORITHM dummy_store[] = {
{ "DUMMY", "provider=dummy", dummy_store_functions },
{ NULL, NULL, NULL }
};
static void *dummy_rand_newctx(void *provctx, void *parent,
const OSSL_DISPATCH *parent_calls)
{
return provctx;
}
static void dummy_rand_freectx(void *vctx)
{
}
static int dummy_rand_instantiate(void *vdrbg, unsigned int strength,
int prediction_resistance,
const unsigned char *pstr, size_t pstr_len,
const OSSL_PARAM params[])
{
return 1;
}
static int dummy_rand_uninstantiate(void *vdrbg)
{
return 1;
}
static int dummy_rand_generate(void *vctx, unsigned char *out, size_t outlen,
unsigned int strength, int prediction_resistance,
const unsigned char *addin, size_t addin_len)
{
size_t i;
for (i = 0; i <outlen; i++)
out[i] = (unsigned char)(i & 0xff);
return 1;
}
static const OSSL_PARAM *dummy_rand_gettable_ctx_params(void *vctx, void *provctx)
{
static const OSSL_PARAM known_gettable_ctx_params[] = {
OSSL_PARAM_size_t(OSSL_RAND_PARAM_MAX_REQUEST, NULL),
OSSL_PARAM_END
};
return known_gettable_ctx_params;
}
static int dummy_rand_get_ctx_params(void *vctx, OSSL_PARAM params[])
{
OSSL_PARAM *p;
p = OSSL_PARAM_locate(params, OSSL_RAND_PARAM_MAX_REQUEST);
if (p != NULL && !OSSL_PARAM_set_size_t(p, INT_MAX))
return 0;
return 1;
}
static int dummy_rand_enable_locking(void *vtest)
{
return 1;
}
static int dummy_rand_lock(void *vtest)
{
return 1;
}
static void dummy_rand_unlock(void *vtest)
{
}
static const OSSL_DISPATCH dummy_rand_functions[] = {
{ OSSL_FUNC_RAND_NEWCTX, (void (*)(void))dummy_rand_newctx },
{ OSSL_FUNC_RAND_FREECTX, (void (*)(void))dummy_rand_freectx },
{ OSSL_FUNC_RAND_INSTANTIATE, (void (*)(void))dummy_rand_instantiate },
{ OSSL_FUNC_RAND_UNINSTANTIATE, (void (*)(void))dummy_rand_uninstantiate },
{ OSSL_FUNC_RAND_GENERATE, (void (*)(void))dummy_rand_generate },
{ OSSL_FUNC_RAND_GETTABLE_CTX_PARAMS,
(void(*)(void))dummy_rand_gettable_ctx_params },
{ OSSL_FUNC_RAND_GET_CTX_PARAMS, (void(*)(void))dummy_rand_get_ctx_params },
{ OSSL_FUNC_RAND_ENABLE_LOCKING, (void(*)(void))dummy_rand_enable_locking },
{ OSSL_FUNC_RAND_LOCK, (void(*)(void))dummy_rand_lock },
{ OSSL_FUNC_RAND_UNLOCK, (void(*)(void))dummy_rand_unlock },
{ 0, NULL }
};
static const OSSL_ALGORITHM dummy_rand[] = {
{ "DUMMY", "provider=dummy", dummy_rand_functions },
{ NULL, NULL, NULL }
};
static const OSSL_ALGORITHM *dummy_query(void *provctx, int operation_id,
int *no_cache)
{
*no_cache = 0;
switch (operation_id) {
case OSSL_OP_DECODER:
return dummy_decoders;
case OSSL_OP_ENCODER:
return dummy_encoders;
case OSSL_OP_STORE:
return dummy_store;
case OSSL_OP_RAND:
return dummy_rand;
}
return NULL;
}
static const OSSL_DISPATCH dummy_dispatch_table[] = {
{ OSSL_FUNC_PROVIDER_QUERY_OPERATION, (void (*)(void))dummy_query },
{ OSSL_FUNC_PROVIDER_TEARDOWN, (void (*)(void))OSSL_LIB_CTX_free },
{ 0, NULL }
};
static int dummy_provider_init(const OSSL_CORE_HANDLE *handle,
const OSSL_DISPATCH *in,
const OSSL_DISPATCH **out,
void **provctx)
{
OSSL_LIB_CTX *libctx = OSSL_LIB_CTX_new_child(handle, in);
unsigned char buf[32];
*provctx = (void *)libctx;
*out = dummy_dispatch_table;
/*
* Do some work using the child libctx, to make sure this is possible from
* inside the init function.
*/
if (RAND_bytes_ex(libctx, buf, sizeof(buf), 0) <= 0)
return 0;
return 1;
}
/*
* Try fetching and freeing various things.
* Test 0: Decoder
* Test 1: Encoder
* Test 2: Store loader
* Test 3: EVP_RAND
* Test 4-7: As above, but additionally with a query string
*/
static int fetch_test(int tst)
{
OSSL_LIB_CTX *libctx = OSSL_LIB_CTX_new();
OSSL_PROVIDER *dummyprov = NULL;
OSSL_PROVIDER *nullprov = NULL;
OSSL_DECODER *decoder = NULL;
OSSL_ENCODER *encoder = NULL;
OSSL_STORE_LOADER *loader = NULL;
int testresult = 0;
unsigned char buf[32];
int query = tst > 3;
if (!TEST_ptr(libctx))
goto err;
if (!TEST_true(OSSL_PROVIDER_add_builtin(libctx, "dummy-prov",
dummy_provider_init))
|| !TEST_ptr(nullprov = OSSL_PROVIDER_load(libctx, "default"))
|| !TEST_ptr(dummyprov = OSSL_PROVIDER_load(libctx, "dummy-prov")))
goto err;
switch (tst % 4) {
case 0:
decoder = OSSL_DECODER_fetch(libctx, "DUMMY",
query ? "provider=dummy" : NULL);
if (!TEST_ptr(decoder))
goto err;
break;
case 1:
encoder = OSSL_ENCODER_fetch(libctx, "DUMMY",
query ? "provider=dummy" : NULL);
if (!TEST_ptr(encoder))
goto err;
break;
case 2:
loader = OSSL_STORE_LOADER_fetch(libctx, "DUMMY",
query ? "provider=dummy" : NULL);
if (!TEST_ptr(loader))
goto err;
break;
case 3:
if (!TEST_true(RAND_set_DRBG_type(libctx, "DUMMY",
query ? "provider=dummy" : NULL,
NULL, NULL))
|| !TEST_int_ge(RAND_bytes_ex(libctx, buf, sizeof(buf), 0), 1))
goto err;
break;
default:
goto err;
}
testresult = 1;
err:
OSSL_DECODER_free(decoder);
OSSL_ENCODER_free(encoder);
OSSL_STORE_LOADER_free(loader);
OSSL_PROVIDER_unload(dummyprov);
OSSL_PROVIDER_unload(nullprov);
OSSL_LIB_CTX_free(libctx);
return testresult;
}
int setup_tests(void)
{
ADD_ALL_TESTS(fetch_test, 8);
return 1;
}
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