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273a67e345
The same go for the pairs import + import_types and export + export_types. This required some additional changes in our KEYMGMT implementations. Reviewed-by: Matt Caswell <matt@openssl.org> Reviewed-by: Shane Lontis <shane.lontis@oracle.com> Reviewed-by: Paul Dale <paul.dale@oracle.com> (Merged from https://github.com/openssl/openssl/pull/11006)
295 lines
9.1 KiB
C
295 lines
9.1 KiB
C
/*
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* Copyright 2019 The OpenSSL Project Authors. All Rights Reserved.
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*
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* Licensed under the Apache License 2.0 (the "License"). You may not use
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* this file except in compliance with the License. You can obtain a copy
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* in the file LICENSE in the source distribution or at
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* https://www.openssl.org/source/license.html
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*/
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#include <openssl/crypto.h>
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#include <openssl/core_numbers.h>
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#include <openssl/evp.h>
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#include <openssl/err.h>
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#include "internal/provider.h"
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#include "internal/refcount.h"
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#include "crypto/evp.h"
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#include "evp_local.h"
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static void *keymgmt_new(void)
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{
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EVP_KEYMGMT *keymgmt = NULL;
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if ((keymgmt = OPENSSL_zalloc(sizeof(*keymgmt))) == NULL
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|| (keymgmt->lock = CRYPTO_THREAD_lock_new()) == NULL) {
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EVP_KEYMGMT_free(keymgmt);
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EVPerr(0, ERR_R_MALLOC_FAILURE);
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return NULL;
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}
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keymgmt->refcnt = 1;
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return keymgmt;
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}
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static void *keymgmt_from_dispatch(int name_id,
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const OSSL_DISPATCH *fns,
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OSSL_PROVIDER *prov)
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{
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EVP_KEYMGMT *keymgmt = NULL;
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int paramfncnt = 0, importfncnt = 0, exportfncnt = 0;
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if ((keymgmt = keymgmt_new()) == NULL) {
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EVP_KEYMGMT_free(keymgmt);
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return NULL;
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}
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keymgmt->name_id = name_id;
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for (; fns->function_id != 0; fns++) {
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switch (fns->function_id) {
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case OSSL_FUNC_KEYMGMT_NEW:
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if (keymgmt->new == NULL)
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keymgmt->new = OSSL_get_OP_keymgmt_new(fns);
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break;
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case OSSL_FUNC_KEYMGMT_FREE:
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if (keymgmt->free == NULL)
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keymgmt->free = OSSL_get_OP_keymgmt_free(fns);
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break;
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case OSSL_FUNC_KEYMGMT_GET_PARAMS:
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if (keymgmt->get_params == NULL) {
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paramfncnt++;
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keymgmt->get_params = OSSL_get_OP_keymgmt_get_params(fns);
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}
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break;
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case OSSL_FUNC_KEYMGMT_GETTABLE_PARAMS:
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if (keymgmt->gettable_params == NULL) {
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paramfncnt++;
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keymgmt->gettable_params =
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OSSL_get_OP_keymgmt_gettable_params(fns);
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}
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break;
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case OSSL_FUNC_KEYMGMT_QUERY_OPERATION_NAME:
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if (keymgmt->query_operation_name == NULL)
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keymgmt->query_operation_name =
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OSSL_get_OP_keymgmt_query_operation_name(fns);
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break;
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case OSSL_FUNC_KEYMGMT_HAS:
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if (keymgmt->has == NULL)
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keymgmt->has = OSSL_get_OP_keymgmt_has(fns);
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break;
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case OSSL_FUNC_KEYMGMT_VALIDATE:
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if (keymgmt->validate == NULL)
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keymgmt->validate = OSSL_get_OP_keymgmt_validate(fns);
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break;
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case OSSL_FUNC_KEYMGMT_IMPORT:
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if (keymgmt->import == NULL) {
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importfncnt++;
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keymgmt->import = OSSL_get_OP_keymgmt_import(fns);
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}
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break;
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case OSSL_FUNC_KEYMGMT_IMPORT_TYPES:
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if (keymgmt->import_types == NULL) {
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importfncnt++;
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keymgmt->import_types = OSSL_get_OP_keymgmt_import_types(fns);
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}
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break;
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case OSSL_FUNC_KEYMGMT_EXPORT:
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if (keymgmt->export == NULL) {
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exportfncnt++;
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keymgmt->export = OSSL_get_OP_keymgmt_export(fns);
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}
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break;
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case OSSL_FUNC_KEYMGMT_EXPORT_TYPES:
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if (keymgmt->export_types == NULL) {
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exportfncnt++;
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keymgmt->export_types = OSSL_get_OP_keymgmt_export_types(fns);
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}
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break;
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}
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}
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/*
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* Try to check that the method is sensible.
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* At least one constructor and the destructor are MANDATORY
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* The functions 'has' is MANDATORY
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* It makes no sense being able to free stuff if you can't create it.
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* It makes no sense providing OSSL_PARAM descriptors for import and
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* export if you can't import or export.
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*/
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if (keymgmt->free == NULL
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|| keymgmt->new == NULL
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|| keymgmt->has == NULL
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|| (paramfncnt != 0 && paramfncnt != 2)
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|| (importfncnt != 0 && importfncnt != 2)
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|| (exportfncnt != 0 && exportfncnt != 2)) {
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EVP_KEYMGMT_free(keymgmt);
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EVPerr(0, EVP_R_INVALID_PROVIDER_FUNCTIONS);
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return NULL;
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}
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keymgmt->prov = prov;
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if (prov != NULL)
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ossl_provider_up_ref(prov);
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return keymgmt;
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}
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EVP_KEYMGMT *evp_keymgmt_fetch_by_number(OPENSSL_CTX *ctx, int name_id,
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const char *properties)
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{
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return evp_generic_fetch_by_number(ctx,
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OSSL_OP_KEYMGMT, name_id, properties,
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keymgmt_from_dispatch,
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(int (*)(void *))EVP_KEYMGMT_up_ref,
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(void (*)(void *))EVP_KEYMGMT_free);
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}
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EVP_KEYMGMT *EVP_KEYMGMT_fetch(OPENSSL_CTX *ctx, const char *algorithm,
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const char *properties)
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{
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return evp_generic_fetch(ctx, OSSL_OP_KEYMGMT, algorithm, properties,
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keymgmt_from_dispatch,
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(int (*)(void *))EVP_KEYMGMT_up_ref,
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(void (*)(void *))EVP_KEYMGMT_free);
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}
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int EVP_KEYMGMT_up_ref(EVP_KEYMGMT *keymgmt)
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{
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int ref = 0;
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CRYPTO_UP_REF(&keymgmt->refcnt, &ref, keymgmt->lock);
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return 1;
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}
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void EVP_KEYMGMT_free(EVP_KEYMGMT *keymgmt)
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{
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int ref = 0;
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if (keymgmt == NULL)
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return;
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CRYPTO_DOWN_REF(&keymgmt->refcnt, &ref, keymgmt->lock);
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if (ref > 0)
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return;
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ossl_provider_free(keymgmt->prov);
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CRYPTO_THREAD_lock_free(keymgmt->lock);
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OPENSSL_free(keymgmt);
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}
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const OSSL_PROVIDER *EVP_KEYMGMT_provider(const EVP_KEYMGMT *keymgmt)
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{
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return keymgmt->prov;
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}
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int EVP_KEYMGMT_number(const EVP_KEYMGMT *keymgmt)
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{
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return keymgmt->name_id;
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}
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int EVP_KEYMGMT_is_a(const EVP_KEYMGMT *keymgmt, const char *name)
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{
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return evp_is_a(keymgmt->prov, keymgmt->name_id, NULL, name);
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}
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void EVP_KEYMGMT_do_all_provided(OPENSSL_CTX *libctx,
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void (*fn)(EVP_KEYMGMT *keymgmt, void *arg),
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void *arg)
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{
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evp_generic_do_all(libctx, OSSL_OP_KEYMGMT,
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(void (*)(void *, void *))fn, arg,
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keymgmt_from_dispatch,
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(void (*)(void *))EVP_KEYMGMT_free);
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}
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void EVP_KEYMGMT_names_do_all(const EVP_KEYMGMT *keymgmt,
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void (*fn)(const char *name, void *data),
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void *data)
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{
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if (keymgmt->prov != NULL)
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evp_names_do_all(keymgmt->prov, keymgmt->name_id, fn, data);
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}
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/*
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* Internal API that interfaces with the method function pointers
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*/
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void *evp_keymgmt_newdata(const EVP_KEYMGMT *keymgmt)
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{
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void *provctx = ossl_provider_ctx(EVP_KEYMGMT_provider(keymgmt));
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/*
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* TODO(3.0) 'new' is currently mandatory on its own, but when new
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* constructors appear, it won't be quite as mandatory, so we have
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* a check for future cases.
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*/
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if (keymgmt->new == NULL)
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return NULL;
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return keymgmt->new(provctx);
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}
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void evp_keymgmt_freedata(const EVP_KEYMGMT *keymgmt, void *keydata)
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{
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/* This is mandatory, no need to check for its presence */
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keymgmt->free(keydata);
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}
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int evp_keymgmt_get_params(const EVP_KEYMGMT *keymgmt, void *keydata,
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OSSL_PARAM params[])
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{
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if (keymgmt->get_params == NULL)
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return 1;
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return keymgmt->get_params(keydata, params);
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}
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const OSSL_PARAM *evp_keymgmt_gettable_params(const EVP_KEYMGMT *keymgmt)
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{
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if (keymgmt->gettable_params == NULL)
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return NULL;
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return keymgmt->gettable_params();
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}
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int evp_keymgmt_has(const EVP_KEYMGMT *keymgmt, void *keydata, int selection)
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{
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/* This is mandatory, no need to check for its presence */
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return keymgmt->has(keydata, selection);
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}
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int evp_keymgmt_validate(const EVP_KEYMGMT *keymgmt, void *keydata,
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int selection)
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{
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/* We assume valid if the implementation doesn't have a function */
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if (keymgmt->validate == NULL)
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return 1;
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return keymgmt->validate(keydata, selection);
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}
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int evp_keymgmt_import(const EVP_KEYMGMT *keymgmt, void *keydata,
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int selection, const OSSL_PARAM params[])
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{
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if (keymgmt->import == NULL)
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return 0;
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return keymgmt->import(keydata, selection, params);
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}
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const OSSL_PARAM *evp_keymgmt_import_types(const EVP_KEYMGMT *keymgmt,
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int selection)
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{
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if (keymgmt->import_types == NULL)
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return NULL;
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return keymgmt->import_types(selection);
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}
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int evp_keymgmt_export(const EVP_KEYMGMT *keymgmt, void *keydata,
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int selection, OSSL_CALLBACK *param_cb, void *cbarg)
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{
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if (keymgmt->export == NULL)
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return 0;
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return keymgmt->export(keydata, selection, param_cb, cbarg);
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}
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const OSSL_PARAM *evp_keymgmt_export_types(const EVP_KEYMGMT *keymgmt,
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int selection)
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{
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if (keymgmt->export_types == NULL)
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return NULL;
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return keymgmt->export_types(selection);
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}
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