Add a test for fetching various non-evp objects

We fetch an Encoder, Decoder and Loader.

Reviewed-by: Tomas Mraz <tomas@openssl.org>
Reviewed-by: Paul Dale <pauli@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/15741)

test/build.info

@@ -56,7 +56,8 @@ IF[{- !$disabled{tests} -}]
           sysdefaulttest errtest ssl_ctx_test gosttest \
           context_internal_test aesgcmtest params_test evp_pkey_dparams_test \
           keymgmt_internal_test hexstr_test provider_status_test defltfips_test \
-          bio_readbuffer_test user_property_test pkcs7_test upcallstest
+          bio_readbuffer_test user_property_test pkcs7_test upcallstest \
+          provfetchtest
 
   IF[{- !$disabled{'deprecated-3.0'} -}]
     PROGRAMS{noinst}=enginetest
@@ -171,6 +172,10 @@ IF[{- !$disabled{tests} -}]
     DEFINE[evp_extra_test]=NO_FIPS_MODULE
   ENDIF
 
+  SOURCE[provfetchtest]=provfetchtest.c
+  INCLUDE[provfetchtest]=../include ../apps/include
+  DEPEND[provfetchtest]=../libcrypto.a libtestutil.a
+
   SOURCE[evp_pkey_provided_test]=evp_pkey_provided_test.c
   INCLUDE[evp_pkey_provided_test]=../include ../apps/include
   DEPEND[evp_pkey_provided_test]=../libcrypto.a libtestutil.a

test/provfetchtest.c

@@ -0,0 +1,179 @@
+/*
+ * Copyright 2021 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 "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 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;
+    }
+    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);
+
+    *provctx = (void *)libctx;
+    *out = dummy_dispatch_table;
+
+    return 1;
+}
+
+/*
+ * Try fetching and freeing various things.
+ * Test 0: Decoder
+ * Test 1: Encoder
+ * Test 2: Store loader
+ */
+static int fetch_test(int tst)
+{
+    OSSL_LIB_CTX *libctx = OSSL_LIB_CTX_new();
+    OSSL_PROVIDER *dummyprov = NULL;
+    OSSL_DECODER *decoder = NULL;
+    OSSL_ENCODER *encoder = NULL;
+    OSSL_STORE_LOADER *loader = NULL;
+    int testresult = 0;
+
+    if (!TEST_ptr(libctx))
+        goto err;
+
+    if (!TEST_true(OSSL_PROVIDER_add_builtin(libctx, "dummy-prov",
+                                             dummy_provider_init))
+            || !TEST_ptr(dummyprov = OSSL_PROVIDER_load(libctx, "dummy-prov")))
+        goto err;
+
+    switch(tst) {
+    case 0:
+        decoder = OSSL_DECODER_fetch(libctx, "DUMMY", NULL);
+        if (!TEST_ptr(decoder))
+            goto err;
+        break;
+    case 1:
+        encoder = OSSL_ENCODER_fetch(libctx, "DUMMY", NULL);
+        if (!TEST_ptr(encoder))
+            goto err;
+        break;
+    case 2:
+        loader = OSSL_STORE_LOADER_fetch(libctx, "DUMMY", NULL);
+        if (!TEST_ptr(loader))
+            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_LIB_CTX_free(libctx);
+    return testresult;
+}
+
+int setup_tests(void)
+{
+    ADD_ALL_TESTS(fetch_test, 3);
+
+    return 1;
+}

test/recipes/04-test_provfetch.t

@@ -0,0 +1,12 @@
+#! /usr/bin/env perl
+# Copyright 2015-2016 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
+
+
+use OpenSSL::Test::Simple;
+
+simple_test("test_provfetch", "provfetchtest");