mirror of
https://github.com/openssl/openssl.git
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8fa65a6648
If the provider's output dispatch table is NULL, trying to parse it causes a crash. Let's not do that. Reviewed-by: Dmitry Belyavskiy <beldmit@gmail.com> Reviewed-by: Todd Short <todd.short@me.com> (Merged from https://github.com/openssl/openssl/pull/22866)
2302 lines
73 KiB
C
2302 lines
73 KiB
C
/*
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* Copyright 2019-2023 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 <assert.h>
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#include <openssl/core.h>
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#include <openssl/core_dispatch.h>
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#include <openssl/core_names.h>
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#include <openssl/provider.h>
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#include <openssl/params.h>
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#include <openssl/opensslv.h>
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#include "crypto/cryptlib.h"
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#ifndef FIPS_MODULE
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#include "crypto/decoder.h" /* ossl_decoder_store_cache_flush */
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#include "crypto/encoder.h" /* ossl_encoder_store_cache_flush */
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#include "crypto/store.h" /* ossl_store_loader_store_cache_flush */
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#endif
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#include "crypto/evp.h" /* evp_method_store_cache_flush */
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#include "crypto/rand.h"
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#include "internal/nelem.h"
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#include "internal/thread_once.h"
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#include "internal/provider.h"
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#include "internal/refcount.h"
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#include "internal/bio.h"
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#include "internal/core.h"
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#include "provider_local.h"
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#include "crypto/context.h"
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#ifndef FIPS_MODULE
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# include <openssl/self_test.h>
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#endif
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/*
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* This file defines and uses a number of different structures:
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*
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* OSSL_PROVIDER (provider_st): Used to represent all information related to a
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* single instance of a provider.
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*
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* provider_store_st: Holds information about the collection of providers that
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* are available within the current library context (OSSL_LIB_CTX). It also
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* holds configuration information about providers that could be loaded at some
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* future point.
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*
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* OSSL_PROVIDER_CHILD_CB: An instance of this structure holds the callbacks
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* that have been registered for a child library context and the associated
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* provider that registered those callbacks.
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*
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* Where a child library context exists then it has its own instance of the
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* provider store. Each provider that exists in the parent provider store, has
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* an associated child provider in the child library context's provider store.
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* As providers get activated or deactivated this needs to be mirrored in the
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* associated child providers.
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*
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* LOCKING
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* =======
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*
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* There are a number of different locks used in this file and it is important
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* to understand how they should be used in order to avoid deadlocks.
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*
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* Fields within a structure can often be "write once" on creation, and then
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* "read many". Creation of a structure is done by a single thread, and
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* therefore no lock is required for the "write once/read many" fields. It is
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* safe for multiple threads to read these fields without a lock, because they
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* will never be changed.
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*
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* However some fields may be changed after a structure has been created and
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* shared between multiple threads. Where this is the case a lock is required.
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*
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* The locks available are:
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*
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* The provider flag_lock: Used to control updates to the various provider
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* "flags" (flag_initialized and flag_activated).
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*
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* The provider activatecnt_lock: Used to control updates to the provider
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* activatecnt value.
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*
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* The provider optbits_lock: Used to control access to the provider's
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* operation_bits and operation_bits_sz fields.
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*
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* The store default_path_lock: Used to control access to the provider store's
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* default search path value (default_path)
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*
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* The store lock: Used to control the stack of provider's held within the
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* provider store, as well as the stack of registered child provider callbacks.
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*
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* As a general rule-of-thumb it is best to:
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* - keep the scope of the code that is protected by a lock to the absolute
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* minimum possible;
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* - try to keep the scope of the lock to within a single function (i.e. avoid
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* making calls to other functions while holding a lock);
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* - try to only ever hold one lock at a time.
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*
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* Unfortunately, it is not always possible to stick to the above guidelines.
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* Where they are not adhered to there is always a danger of inadvertently
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* introducing the possibility of deadlock. The following rules MUST be adhered
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* to in order to avoid that:
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* - Holding multiple locks at the same time is only allowed for the
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* provider store lock, the provider activatecnt_lock and the provider flag_lock.
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* - When holding multiple locks they must be acquired in the following order of
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* precedence:
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* 1) provider store lock
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* 2) provider flag_lock
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* 3) provider activatecnt_lock
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* - When releasing locks they must be released in the reverse order to which
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* they were acquired
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* - No locks may be held when making an upcall. NOTE: Some common functions
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* can make upcalls as part of their normal operation. If you need to call
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* some other function while holding a lock make sure you know whether it
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* will make any upcalls or not. For example ossl_provider_up_ref() can call
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* ossl_provider_up_ref_parent() which can call the c_prov_up_ref() upcall.
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* - It is permissible to hold the store and flag locks when calling child
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* provider callbacks. No other locks may be held during such callbacks.
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*/
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static OSSL_PROVIDER *provider_new(const char *name,
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OSSL_provider_init_fn *init_function,
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STACK_OF(INFOPAIR) *parameters);
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/*-
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* Provider Object structure
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* =========================
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*/
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#ifndef FIPS_MODULE
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typedef struct {
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OSSL_PROVIDER *prov;
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int (*create_cb)(const OSSL_CORE_HANDLE *provider, void *cbdata);
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int (*remove_cb)(const OSSL_CORE_HANDLE *provider, void *cbdata);
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int (*global_props_cb)(const char *props, void *cbdata);
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void *cbdata;
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} OSSL_PROVIDER_CHILD_CB;
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DEFINE_STACK_OF(OSSL_PROVIDER_CHILD_CB)
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#endif
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struct provider_store_st; /* Forward declaration */
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struct ossl_provider_st {
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/* Flag bits */
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unsigned int flag_initialized:1;
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unsigned int flag_activated:1;
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/* Getting and setting the flags require synchronization */
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CRYPTO_RWLOCK *flag_lock;
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/* OpenSSL library side data */
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CRYPTO_REF_COUNT refcnt;
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CRYPTO_RWLOCK *activatecnt_lock; /* For the activatecnt counter */
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int activatecnt;
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char *name;
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char *path;
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DSO *module;
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OSSL_provider_init_fn *init_function;
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STACK_OF(INFOPAIR) *parameters;
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OSSL_LIB_CTX *libctx; /* The library context this instance is in */
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struct provider_store_st *store; /* The store this instance belongs to */
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#ifndef FIPS_MODULE
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/*
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* In the FIPS module inner provider, this isn't needed, since the
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* error upcalls are always direct calls to the outer provider.
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*/
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int error_lib; /* ERR library number, one for each provider */
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# ifndef OPENSSL_NO_ERR
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ERR_STRING_DATA *error_strings; /* Copy of what the provider gives us */
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# endif
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#endif
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/* Provider side functions */
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OSSL_FUNC_provider_teardown_fn *teardown;
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OSSL_FUNC_provider_gettable_params_fn *gettable_params;
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OSSL_FUNC_provider_get_params_fn *get_params;
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OSSL_FUNC_provider_get_capabilities_fn *get_capabilities;
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OSSL_FUNC_provider_self_test_fn *self_test;
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OSSL_FUNC_provider_query_operation_fn *query_operation;
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OSSL_FUNC_provider_unquery_operation_fn *unquery_operation;
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/*
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* Cache of bit to indicate of query_operation() has been called on
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* a specific operation or not.
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*/
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unsigned char *operation_bits;
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size_t operation_bits_sz;
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CRYPTO_RWLOCK *opbits_lock;
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#ifndef FIPS_MODULE
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/* Whether this provider is the child of some other provider */
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const OSSL_CORE_HANDLE *handle;
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unsigned int ischild:1;
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#endif
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/* Provider side data */
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void *provctx;
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const OSSL_DISPATCH *dispatch;
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};
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DEFINE_STACK_OF(OSSL_PROVIDER)
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static int ossl_provider_cmp(const OSSL_PROVIDER * const *a,
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const OSSL_PROVIDER * const *b)
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{
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return strcmp((*a)->name, (*b)->name);
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}
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/*-
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* Provider Object store
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* =====================
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*
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* The Provider Object store is a library context object, and therefore needs
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* an index.
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*/
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struct provider_store_st {
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OSSL_LIB_CTX *libctx;
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STACK_OF(OSSL_PROVIDER) *providers;
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STACK_OF(OSSL_PROVIDER_CHILD_CB) *child_cbs;
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CRYPTO_RWLOCK *default_path_lock;
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CRYPTO_RWLOCK *lock;
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char *default_path;
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OSSL_PROVIDER_INFO *provinfo;
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size_t numprovinfo;
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size_t provinfosz;
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unsigned int use_fallbacks:1;
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unsigned int freeing:1;
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};
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/*
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* provider_deactivate_free() is a wrapper around ossl_provider_deactivate()
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* and ossl_provider_free(), called as needed.
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* Since this is only called when the provider store is being emptied, we
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* don't need to care about any lock.
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*/
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static void provider_deactivate_free(OSSL_PROVIDER *prov)
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{
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if (prov->flag_activated)
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ossl_provider_deactivate(prov, 1);
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ossl_provider_free(prov);
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}
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#ifndef FIPS_MODULE
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static void ossl_provider_child_cb_free(OSSL_PROVIDER_CHILD_CB *cb)
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{
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OPENSSL_free(cb);
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}
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#endif
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static void infopair_free(INFOPAIR *pair)
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{
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OPENSSL_free(pair->name);
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OPENSSL_free(pair->value);
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OPENSSL_free(pair);
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}
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static INFOPAIR *infopair_copy(const INFOPAIR *src)
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{
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INFOPAIR *dest = OPENSSL_zalloc(sizeof(*dest));
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if (dest == NULL)
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return NULL;
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if (src->name != NULL) {
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dest->name = OPENSSL_strdup(src->name);
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if (dest->name == NULL)
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goto err;
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}
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if (src->value != NULL) {
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dest->value = OPENSSL_strdup(src->value);
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if (dest->value == NULL)
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goto err;
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}
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return dest;
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err:
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OPENSSL_free(dest->name);
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OPENSSL_free(dest);
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return NULL;
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}
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void ossl_provider_info_clear(OSSL_PROVIDER_INFO *info)
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{
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OPENSSL_free(info->name);
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OPENSSL_free(info->path);
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sk_INFOPAIR_pop_free(info->parameters, infopair_free);
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}
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void ossl_provider_store_free(void *vstore)
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{
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struct provider_store_st *store = vstore;
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size_t i;
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if (store == NULL)
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return;
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store->freeing = 1;
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OPENSSL_free(store->default_path);
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sk_OSSL_PROVIDER_pop_free(store->providers, provider_deactivate_free);
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#ifndef FIPS_MODULE
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sk_OSSL_PROVIDER_CHILD_CB_pop_free(store->child_cbs,
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ossl_provider_child_cb_free);
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#endif
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CRYPTO_THREAD_lock_free(store->default_path_lock);
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CRYPTO_THREAD_lock_free(store->lock);
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for (i = 0; i < store->numprovinfo; i++)
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ossl_provider_info_clear(&store->provinfo[i]);
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OPENSSL_free(store->provinfo);
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OPENSSL_free(store);
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}
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void *ossl_provider_store_new(OSSL_LIB_CTX *ctx)
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{
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struct provider_store_st *store = OPENSSL_zalloc(sizeof(*store));
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if (store == NULL
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|| (store->providers = sk_OSSL_PROVIDER_new(ossl_provider_cmp)) == NULL
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|| (store->default_path_lock = CRYPTO_THREAD_lock_new()) == NULL
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#ifndef FIPS_MODULE
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|| (store->child_cbs = sk_OSSL_PROVIDER_CHILD_CB_new_null()) == NULL
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#endif
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|| (store->lock = CRYPTO_THREAD_lock_new()) == NULL) {
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ossl_provider_store_free(store);
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return NULL;
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}
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store->libctx = ctx;
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store->use_fallbacks = 1;
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return store;
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}
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static struct provider_store_st *get_provider_store(OSSL_LIB_CTX *libctx)
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{
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struct provider_store_st *store = NULL;
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store = ossl_lib_ctx_get_data(libctx, OSSL_LIB_CTX_PROVIDER_STORE_INDEX);
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if (store == NULL)
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ERR_raise(ERR_LIB_CRYPTO, ERR_R_INTERNAL_ERROR);
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return store;
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}
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int ossl_provider_disable_fallback_loading(OSSL_LIB_CTX *libctx)
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{
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struct provider_store_st *store;
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if ((store = get_provider_store(libctx)) != NULL) {
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if (!CRYPTO_THREAD_write_lock(store->lock))
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return 0;
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store->use_fallbacks = 0;
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CRYPTO_THREAD_unlock(store->lock);
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return 1;
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}
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return 0;
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}
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#define BUILTINS_BLOCK_SIZE 10
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int ossl_provider_info_add_to_store(OSSL_LIB_CTX *libctx,
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OSSL_PROVIDER_INFO *entry)
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{
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struct provider_store_st *store = get_provider_store(libctx);
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int ret = 0;
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if (entry->name == NULL) {
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ERR_raise(ERR_LIB_CRYPTO, ERR_R_PASSED_NULL_PARAMETER);
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return 0;
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}
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if (store == NULL) {
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ERR_raise(ERR_LIB_CRYPTO, ERR_R_INTERNAL_ERROR);
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return 0;
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}
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if (!CRYPTO_THREAD_write_lock(store->lock))
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return 0;
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if (store->provinfosz == 0) {
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store->provinfo = OPENSSL_zalloc(sizeof(*store->provinfo)
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* BUILTINS_BLOCK_SIZE);
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if (store->provinfo == NULL)
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goto err;
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store->provinfosz = BUILTINS_BLOCK_SIZE;
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} else if (store->numprovinfo == store->provinfosz) {
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OSSL_PROVIDER_INFO *tmpbuiltins;
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size_t newsz = store->provinfosz + BUILTINS_BLOCK_SIZE;
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tmpbuiltins = OPENSSL_realloc(store->provinfo,
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sizeof(*store->provinfo) * newsz);
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if (tmpbuiltins == NULL)
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goto err;
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store->provinfo = tmpbuiltins;
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store->provinfosz = newsz;
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}
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store->provinfo[store->numprovinfo] = *entry;
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store->numprovinfo++;
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ret = 1;
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err:
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CRYPTO_THREAD_unlock(store->lock);
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return ret;
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}
|
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OSSL_PROVIDER *ossl_provider_find(OSSL_LIB_CTX *libctx, const char *name,
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ossl_unused int noconfig)
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{
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struct provider_store_st *store = NULL;
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OSSL_PROVIDER *prov = NULL;
|
|
|
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if ((store = get_provider_store(libctx)) != NULL) {
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OSSL_PROVIDER tmpl = { 0, };
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int i;
|
|
|
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#if !defined(FIPS_MODULE) && !defined(OPENSSL_NO_AUTOLOAD_CONFIG)
|
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/*
|
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* Make sure any providers are loaded from config before we try to find
|
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* them.
|
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*/
|
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if (!noconfig) {
|
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if (ossl_lib_ctx_is_default(libctx))
|
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OPENSSL_init_crypto(OPENSSL_INIT_LOAD_CONFIG, NULL);
|
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}
|
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#endif
|
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|
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tmpl.name = (char *)name;
|
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if (!CRYPTO_THREAD_write_lock(store->lock))
|
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return NULL;
|
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sk_OSSL_PROVIDER_sort(store->providers);
|
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if ((i = sk_OSSL_PROVIDER_find(store->providers, &tmpl)) != -1)
|
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prov = sk_OSSL_PROVIDER_value(store->providers, i);
|
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CRYPTO_THREAD_unlock(store->lock);
|
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if (prov != NULL && !ossl_provider_up_ref(prov))
|
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prov = NULL;
|
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}
|
|
|
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return prov;
|
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}
|
|
|
|
/*-
|
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* Provider Object methods
|
|
* =======================
|
|
*/
|
|
|
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static OSSL_PROVIDER *provider_new(const char *name,
|
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OSSL_provider_init_fn *init_function,
|
|
STACK_OF(INFOPAIR) *parameters)
|
|
{
|
|
OSSL_PROVIDER *prov = NULL;
|
|
|
|
if ((prov = OPENSSL_zalloc(sizeof(*prov))) == NULL)
|
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return NULL;
|
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if (!CRYPTO_NEW_REF(&prov->refcnt, 1)) {
|
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OPENSSL_free(prov);
|
|
return NULL;
|
|
}
|
|
#ifndef HAVE_ATOMICS
|
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if ((prov->activatecnt_lock = CRYPTO_THREAD_lock_new()) == NULL) {
|
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ossl_provider_free(prov);
|
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ERR_raise(ERR_LIB_CRYPTO, ERR_R_CRYPTO_LIB);
|
|
return NULL;
|
|
}
|
|
#endif
|
|
|
|
if ((prov->opbits_lock = CRYPTO_THREAD_lock_new()) == NULL
|
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|| (prov->flag_lock = CRYPTO_THREAD_lock_new()) == NULL
|
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|| (prov->parameters = sk_INFOPAIR_deep_copy(parameters,
|
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infopair_copy,
|
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infopair_free)) == NULL) {
|
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ossl_provider_free(prov);
|
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ERR_raise(ERR_LIB_CRYPTO, ERR_R_CRYPTO_LIB);
|
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return NULL;
|
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}
|
|
if ((prov->name = OPENSSL_strdup(name)) == NULL) {
|
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ossl_provider_free(prov);
|
|
return NULL;
|
|
}
|
|
|
|
prov->init_function = init_function;
|
|
|
|
return prov;
|
|
}
|
|
|
|
int ossl_provider_up_ref(OSSL_PROVIDER *prov)
|
|
{
|
|
int ref = 0;
|
|
|
|
if (CRYPTO_UP_REF(&prov->refcnt, &ref) <= 0)
|
|
return 0;
|
|
|
|
#ifndef FIPS_MODULE
|
|
if (prov->ischild) {
|
|
if (!ossl_provider_up_ref_parent(prov, 0)) {
|
|
ossl_provider_free(prov);
|
|
return 0;
|
|
}
|
|
}
|
|
#endif
|
|
|
|
return ref;
|
|
}
|
|
|
|
#ifndef FIPS_MODULE
|
|
static int provider_up_ref_intern(OSSL_PROVIDER *prov, int activate)
|
|
{
|
|
if (activate)
|
|
return ossl_provider_activate(prov, 1, 0);
|
|
|
|
return ossl_provider_up_ref(prov);
|
|
}
|
|
|
|
static int provider_free_intern(OSSL_PROVIDER *prov, int deactivate)
|
|
{
|
|
if (deactivate)
|
|
return ossl_provider_deactivate(prov, 1);
|
|
|
|
ossl_provider_free(prov);
|
|
return 1;
|
|
}
|
|
#endif
|
|
|
|
/*
|
|
* We assume that the requested provider does not already exist in the store.
|
|
* The caller should check. If it does exist then adding it to the store later
|
|
* will fail.
|
|
*/
|
|
OSSL_PROVIDER *ossl_provider_new(OSSL_LIB_CTX *libctx, const char *name,
|
|
OSSL_provider_init_fn *init_function,
|
|
OSSL_PARAM *params, int noconfig)
|
|
{
|
|
struct provider_store_st *store = NULL;
|
|
OSSL_PROVIDER_INFO template;
|
|
OSSL_PROVIDER *prov = NULL;
|
|
|
|
if ((store = get_provider_store(libctx)) == NULL)
|
|
return NULL;
|
|
|
|
memset(&template, 0, sizeof(template));
|
|
if (init_function == NULL) {
|
|
const OSSL_PROVIDER_INFO *p;
|
|
size_t i;
|
|
|
|
/* Check if this is a predefined builtin provider */
|
|
for (p = ossl_predefined_providers; p->name != NULL; p++) {
|
|
if (strcmp(p->name, name) == 0) {
|
|
template = *p;
|
|
break;
|
|
}
|
|
}
|
|
if (p->name == NULL) {
|
|
/* Check if this is a user added provider */
|
|
if (!CRYPTO_THREAD_read_lock(store->lock))
|
|
return NULL;
|
|
for (i = 0, p = store->provinfo; i < store->numprovinfo; p++, i++) {
|
|
if (strcmp(p->name, name) == 0) {
|
|
template = *p;
|
|
break;
|
|
}
|
|
}
|
|
CRYPTO_THREAD_unlock(store->lock);
|
|
}
|
|
} else {
|
|
template.init = init_function;
|
|
}
|
|
|
|
if (params != NULL) {
|
|
int i;
|
|
|
|
template.parameters = sk_INFOPAIR_new_null();
|
|
if (template.parameters == NULL)
|
|
return NULL;
|
|
|
|
for (i = 0; params[i].key != NULL; i++) {
|
|
if (params[i].data_type != OSSL_PARAM_UTF8_STRING)
|
|
continue;
|
|
if (ossl_provider_info_add_parameter(&template, params[i].key,
|
|
(char *)params[i].data) <= 0)
|
|
return NULL;
|
|
}
|
|
}
|
|
|
|
/* provider_new() generates an error, so no need here */
|
|
prov = provider_new(name, template.init, template.parameters);
|
|
|
|
if (params != NULL) /* We copied the parameters, let's free them */
|
|
sk_INFOPAIR_pop_free(template.parameters, infopair_free);
|
|
|
|
if (prov == NULL)
|
|
return NULL;
|
|
|
|
prov->libctx = libctx;
|
|
#ifndef FIPS_MODULE
|
|
prov->error_lib = ERR_get_next_error_library();
|
|
#endif
|
|
|
|
/*
|
|
* At this point, the provider is only partially "loaded". To be
|
|
* fully "loaded", ossl_provider_activate() must also be called and it must
|
|
* then be added to the provider store.
|
|
*/
|
|
|
|
return prov;
|
|
}
|
|
|
|
/* Assumes that the store lock is held */
|
|
static int create_provider_children(OSSL_PROVIDER *prov)
|
|
{
|
|
int ret = 1;
|
|
#ifndef FIPS_MODULE
|
|
struct provider_store_st *store = prov->store;
|
|
OSSL_PROVIDER_CHILD_CB *child_cb;
|
|
int i, max;
|
|
|
|
max = sk_OSSL_PROVIDER_CHILD_CB_num(store->child_cbs);
|
|
for (i = 0; i < max; i++) {
|
|
/*
|
|
* This is newly activated (activatecnt == 1), so we need to
|
|
* create child providers as necessary.
|
|
*/
|
|
child_cb = sk_OSSL_PROVIDER_CHILD_CB_value(store->child_cbs, i);
|
|
ret &= child_cb->create_cb((OSSL_CORE_HANDLE *)prov, child_cb->cbdata);
|
|
}
|
|
#endif
|
|
|
|
return ret;
|
|
}
|
|
|
|
int ossl_provider_add_to_store(OSSL_PROVIDER *prov, OSSL_PROVIDER **actualprov,
|
|
int retain_fallbacks)
|
|
{
|
|
struct provider_store_st *store;
|
|
int idx;
|
|
OSSL_PROVIDER tmpl = { 0, };
|
|
OSSL_PROVIDER *actualtmp = NULL;
|
|
|
|
if (actualprov != NULL)
|
|
*actualprov = NULL;
|
|
|
|
if ((store = get_provider_store(prov->libctx)) == NULL)
|
|
return 0;
|
|
|
|
if (!CRYPTO_THREAD_write_lock(store->lock))
|
|
return 0;
|
|
|
|
tmpl.name = (char *)prov->name;
|
|
idx = sk_OSSL_PROVIDER_find(store->providers, &tmpl);
|
|
if (idx == -1)
|
|
actualtmp = prov;
|
|
else
|
|
actualtmp = sk_OSSL_PROVIDER_value(store->providers, idx);
|
|
|
|
if (idx == -1) {
|
|
if (sk_OSSL_PROVIDER_push(store->providers, prov) == 0)
|
|
goto err;
|
|
prov->store = store;
|
|
if (!create_provider_children(prov)) {
|
|
sk_OSSL_PROVIDER_delete_ptr(store->providers, prov);
|
|
goto err;
|
|
}
|
|
if (!retain_fallbacks)
|
|
store->use_fallbacks = 0;
|
|
}
|
|
|
|
CRYPTO_THREAD_unlock(store->lock);
|
|
|
|
if (actualprov != NULL) {
|
|
if (!ossl_provider_up_ref(actualtmp)) {
|
|
ERR_raise(ERR_LIB_CRYPTO, ERR_R_CRYPTO_LIB);
|
|
actualtmp = NULL;
|
|
return 0;
|
|
}
|
|
*actualprov = actualtmp;
|
|
}
|
|
|
|
if (idx >= 0) {
|
|
/*
|
|
* The provider is already in the store. Probably two threads
|
|
* independently initialised their own provider objects with the same
|
|
* name and raced to put them in the store. This thread lost. We
|
|
* deactivate the one we just created and use the one that already
|
|
* exists instead.
|
|
* If we get here then we know we did not create provider children
|
|
* above, so we inform ossl_provider_deactivate not to attempt to remove
|
|
* any.
|
|
*/
|
|
ossl_provider_deactivate(prov, 0);
|
|
ossl_provider_free(prov);
|
|
}
|
|
#ifndef FIPS_MODULE
|
|
else {
|
|
/*
|
|
* This can be done outside the lock. We tolerate other threads getting
|
|
* the wrong result briefly when creating OSSL_DECODER_CTXs.
|
|
*/
|
|
ossl_decoder_cache_flush(prov->libctx);
|
|
}
|
|
#endif
|
|
|
|
return 1;
|
|
|
|
err:
|
|
CRYPTO_THREAD_unlock(store->lock);
|
|
return 0;
|
|
}
|
|
|
|
void ossl_provider_free(OSSL_PROVIDER *prov)
|
|
{
|
|
if (prov != NULL) {
|
|
int ref = 0;
|
|
|
|
CRYPTO_DOWN_REF(&prov->refcnt, &ref);
|
|
|
|
/*
|
|
* When the refcount drops to zero, we clean up the provider.
|
|
* Note that this also does teardown, which may seem late,
|
|
* considering that init happens on first activation. However,
|
|
* there may be other structures hanging on to the provider after
|
|
* the last deactivation and may therefore need full access to the
|
|
* provider's services. Therefore, we deinit late.
|
|
*/
|
|
if (ref == 0) {
|
|
if (prov->flag_initialized) {
|
|
ossl_provider_teardown(prov);
|
|
#ifndef OPENSSL_NO_ERR
|
|
# ifndef FIPS_MODULE
|
|
if (prov->error_strings != NULL) {
|
|
ERR_unload_strings(prov->error_lib, prov->error_strings);
|
|
OPENSSL_free(prov->error_strings);
|
|
prov->error_strings = NULL;
|
|
}
|
|
# endif
|
|
#endif
|
|
OPENSSL_free(prov->operation_bits);
|
|
prov->operation_bits = NULL;
|
|
prov->operation_bits_sz = 0;
|
|
prov->flag_initialized = 0;
|
|
}
|
|
|
|
#ifndef FIPS_MODULE
|
|
/*
|
|
* We deregister thread handling whether or not the provider was
|
|
* initialized. If init was attempted but was not successful then
|
|
* the provider may still have registered a thread handler.
|
|
*/
|
|
ossl_init_thread_deregister(prov);
|
|
DSO_free(prov->module);
|
|
#endif
|
|
OPENSSL_free(prov->name);
|
|
OPENSSL_free(prov->path);
|
|
sk_INFOPAIR_pop_free(prov->parameters, infopair_free);
|
|
CRYPTO_THREAD_lock_free(prov->opbits_lock);
|
|
CRYPTO_THREAD_lock_free(prov->flag_lock);
|
|
#ifndef HAVE_ATOMICS
|
|
CRYPTO_THREAD_lock_free(prov->activatecnt_lock);
|
|
#endif
|
|
CRYPTO_FREE_REF(&prov->refcnt);
|
|
OPENSSL_free(prov);
|
|
}
|
|
#ifndef FIPS_MODULE
|
|
else if (prov->ischild) {
|
|
ossl_provider_free_parent(prov, 0);
|
|
}
|
|
#endif
|
|
}
|
|
}
|
|
|
|
/* Setters */
|
|
int ossl_provider_set_module_path(OSSL_PROVIDER *prov, const char *module_path)
|
|
{
|
|
OPENSSL_free(prov->path);
|
|
prov->path = NULL;
|
|
if (module_path == NULL)
|
|
return 1;
|
|
if ((prov->path = OPENSSL_strdup(module_path)) != NULL)
|
|
return 1;
|
|
return 0;
|
|
}
|
|
|
|
static int infopair_add(STACK_OF(INFOPAIR) **infopairsk, const char *name,
|
|
const char *value)
|
|
{
|
|
INFOPAIR *pair = NULL;
|
|
|
|
if ((pair = OPENSSL_zalloc(sizeof(*pair))) == NULL
|
|
|| (pair->name = OPENSSL_strdup(name)) == NULL
|
|
|| (pair->value = OPENSSL_strdup(value)) == NULL)
|
|
goto err;
|
|
|
|
if ((*infopairsk == NULL
|
|
&& (*infopairsk = sk_INFOPAIR_new_null()) == NULL)
|
|
|| sk_INFOPAIR_push(*infopairsk, pair) <= 0) {
|
|
ERR_raise(ERR_LIB_CRYPTO, ERR_R_CRYPTO_LIB);
|
|
goto err;
|
|
}
|
|
|
|
return 1;
|
|
|
|
err:
|
|
if (pair != NULL) {
|
|
OPENSSL_free(pair->name);
|
|
OPENSSL_free(pair->value);
|
|
OPENSSL_free(pair);
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
int ossl_provider_add_parameter(OSSL_PROVIDER *prov,
|
|
const char *name, const char *value)
|
|
{
|
|
return infopair_add(&prov->parameters, name, value);
|
|
}
|
|
|
|
int ossl_provider_info_add_parameter(OSSL_PROVIDER_INFO *provinfo,
|
|
const char *name,
|
|
const char *value)
|
|
{
|
|
return infopair_add(&provinfo->parameters, name, value);
|
|
}
|
|
|
|
/*
|
|
* Provider activation.
|
|
*
|
|
* What "activation" means depends on the provider form; for built in
|
|
* providers (in the library or the application alike), the provider
|
|
* can already be considered to be loaded, all that's needed is to
|
|
* initialize it. However, for dynamically loadable provider modules,
|
|
* we must first load that module.
|
|
*
|
|
* Built in modules are distinguished from dynamically loaded modules
|
|
* with an already assigned init function.
|
|
*/
|
|
static const OSSL_DISPATCH *core_dispatch; /* Define further down */
|
|
|
|
int OSSL_PROVIDER_set_default_search_path(OSSL_LIB_CTX *libctx,
|
|
const char *path)
|
|
{
|
|
struct provider_store_st *store;
|
|
char *p = NULL;
|
|
|
|
if (path != NULL) {
|
|
p = OPENSSL_strdup(path);
|
|
if (p == NULL)
|
|
return 0;
|
|
}
|
|
if ((store = get_provider_store(libctx)) != NULL
|
|
&& CRYPTO_THREAD_write_lock(store->default_path_lock)) {
|
|
OPENSSL_free(store->default_path);
|
|
store->default_path = p;
|
|
CRYPTO_THREAD_unlock(store->default_path_lock);
|
|
return 1;
|
|
}
|
|
OPENSSL_free(p);
|
|
return 0;
|
|
}
|
|
|
|
const char *OSSL_PROVIDER_get0_default_search_path(OSSL_LIB_CTX *libctx)
|
|
{
|
|
struct provider_store_st *store;
|
|
char *path = NULL;
|
|
|
|
if ((store = get_provider_store(libctx)) != NULL
|
|
&& CRYPTO_THREAD_read_lock(store->default_path_lock)) {
|
|
path = store->default_path;
|
|
CRYPTO_THREAD_unlock(store->default_path_lock);
|
|
}
|
|
return path;
|
|
}
|
|
|
|
/*
|
|
* Internal version that doesn't affect the store flags, and thereby avoid
|
|
* locking. Direct callers must remember to set the store flags when
|
|
* appropriate.
|
|
*/
|
|
static int provider_init(OSSL_PROVIDER *prov)
|
|
{
|
|
const OSSL_DISPATCH *provider_dispatch = NULL;
|
|
void *tmp_provctx = NULL; /* safety measure */
|
|
#ifndef OPENSSL_NO_ERR
|
|
# ifndef FIPS_MODULE
|
|
OSSL_FUNC_provider_get_reason_strings_fn *p_get_reason_strings = NULL;
|
|
# endif
|
|
#endif
|
|
int ok = 0;
|
|
|
|
if (!ossl_assert(!prov->flag_initialized)) {
|
|
ERR_raise(ERR_LIB_CRYPTO, ERR_R_INTERNAL_ERROR);
|
|
goto end;
|
|
}
|
|
|
|
/*
|
|
* If the init function isn't set, it indicates that this provider is
|
|
* a loadable module.
|
|
*/
|
|
if (prov->init_function == NULL) {
|
|
#ifdef FIPS_MODULE
|
|
goto end;
|
|
#else
|
|
if (prov->module == NULL) {
|
|
char *allocated_path = NULL;
|
|
const char *module_path = NULL;
|
|
char *merged_path = NULL;
|
|
const char *load_dir = NULL;
|
|
char *allocated_load_dir = NULL;
|
|
struct provider_store_st *store;
|
|
|
|
if ((prov->module = DSO_new()) == NULL) {
|
|
/* DSO_new() generates an error already */
|
|
goto end;
|
|
}
|
|
|
|
if ((store = get_provider_store(prov->libctx)) == NULL
|
|
|| !CRYPTO_THREAD_read_lock(store->default_path_lock))
|
|
goto end;
|
|
|
|
if (store->default_path != NULL) {
|
|
allocated_load_dir = OPENSSL_strdup(store->default_path);
|
|
CRYPTO_THREAD_unlock(store->default_path_lock);
|
|
if (allocated_load_dir == NULL)
|
|
goto end;
|
|
load_dir = allocated_load_dir;
|
|
} else {
|
|
CRYPTO_THREAD_unlock(store->default_path_lock);
|
|
}
|
|
|
|
if (load_dir == NULL) {
|
|
load_dir = ossl_safe_getenv("OPENSSL_MODULES");
|
|
if (load_dir == NULL)
|
|
load_dir = MODULESDIR;
|
|
}
|
|
|
|
DSO_ctrl(prov->module, DSO_CTRL_SET_FLAGS,
|
|
DSO_FLAG_NAME_TRANSLATION_EXT_ONLY, NULL);
|
|
|
|
module_path = prov->path;
|
|
if (module_path == NULL)
|
|
module_path = allocated_path =
|
|
DSO_convert_filename(prov->module, prov->name);
|
|
if (module_path != NULL)
|
|
merged_path = DSO_merge(prov->module, module_path, load_dir);
|
|
|
|
if (merged_path == NULL
|
|
|| (DSO_load(prov->module, merged_path, NULL, 0)) == NULL) {
|
|
DSO_free(prov->module);
|
|
prov->module = NULL;
|
|
}
|
|
|
|
OPENSSL_free(merged_path);
|
|
OPENSSL_free(allocated_path);
|
|
OPENSSL_free(allocated_load_dir);
|
|
}
|
|
|
|
if (prov->module == NULL) {
|
|
/* DSO has already recorded errors, this is just a tracepoint */
|
|
ERR_raise_data(ERR_LIB_CRYPTO, ERR_R_DSO_LIB,
|
|
"name=%s", prov->name);
|
|
goto end;
|
|
}
|
|
|
|
prov->init_function = (OSSL_provider_init_fn *)
|
|
DSO_bind_func(prov->module, "OSSL_provider_init");
|
|
#endif
|
|
}
|
|
|
|
/* Check for and call the initialise function for the provider. */
|
|
if (prov->init_function == NULL) {
|
|
ERR_raise_data(ERR_LIB_CRYPTO, ERR_R_UNSUPPORTED,
|
|
"name=%s, provider has no provider init function",
|
|
prov->name);
|
|
goto end;
|
|
}
|
|
|
|
if (!prov->init_function((OSSL_CORE_HANDLE *)prov, core_dispatch,
|
|
&provider_dispatch, &tmp_provctx)) {
|
|
ERR_raise_data(ERR_LIB_CRYPTO, ERR_R_INIT_FAIL,
|
|
"name=%s", prov->name);
|
|
goto end;
|
|
}
|
|
prov->provctx = tmp_provctx;
|
|
prov->dispatch = provider_dispatch;
|
|
|
|
if (provider_dispatch != NULL) {
|
|
for (; provider_dispatch->function_id != 0; provider_dispatch++) {
|
|
switch (provider_dispatch->function_id) {
|
|
case OSSL_FUNC_PROVIDER_TEARDOWN:
|
|
prov->teardown =
|
|
OSSL_FUNC_provider_teardown(provider_dispatch);
|
|
break;
|
|
case OSSL_FUNC_PROVIDER_GETTABLE_PARAMS:
|
|
prov->gettable_params =
|
|
OSSL_FUNC_provider_gettable_params(provider_dispatch);
|
|
break;
|
|
case OSSL_FUNC_PROVIDER_GET_PARAMS:
|
|
prov->get_params =
|
|
OSSL_FUNC_provider_get_params(provider_dispatch);
|
|
break;
|
|
case OSSL_FUNC_PROVIDER_SELF_TEST:
|
|
prov->self_test =
|
|
OSSL_FUNC_provider_self_test(provider_dispatch);
|
|
break;
|
|
case OSSL_FUNC_PROVIDER_GET_CAPABILITIES:
|
|
prov->get_capabilities =
|
|
OSSL_FUNC_provider_get_capabilities(provider_dispatch);
|
|
break;
|
|
case OSSL_FUNC_PROVIDER_QUERY_OPERATION:
|
|
prov->query_operation =
|
|
OSSL_FUNC_provider_query_operation(provider_dispatch);
|
|
break;
|
|
case OSSL_FUNC_PROVIDER_UNQUERY_OPERATION:
|
|
prov->unquery_operation =
|
|
OSSL_FUNC_provider_unquery_operation(provider_dispatch);
|
|
break;
|
|
#ifndef OPENSSL_NO_ERR
|
|
# ifndef FIPS_MODULE
|
|
case OSSL_FUNC_PROVIDER_GET_REASON_STRINGS:
|
|
p_get_reason_strings =
|
|
OSSL_FUNC_provider_get_reason_strings(provider_dispatch);
|
|
break;
|
|
# endif
|
|
#endif
|
|
}
|
|
}
|
|
}
|
|
|
|
#ifndef OPENSSL_NO_ERR
|
|
# ifndef FIPS_MODULE
|
|
if (p_get_reason_strings != NULL) {
|
|
const OSSL_ITEM *reasonstrings = p_get_reason_strings(prov->provctx);
|
|
size_t cnt, cnt2;
|
|
|
|
/*
|
|
* ERR_load_strings() handles ERR_STRING_DATA rather than OSSL_ITEM,
|
|
* although they are essentially the same type.
|
|
* Furthermore, ERR_load_strings() patches the array's error number
|
|
* with the error library number, so we need to make a copy of that
|
|
* array either way.
|
|
*/
|
|
cnt = 0;
|
|
while (reasonstrings[cnt].id != 0) {
|
|
if (ERR_GET_LIB(reasonstrings[cnt].id) != 0)
|
|
goto end;
|
|
cnt++;
|
|
}
|
|
cnt++; /* One for the terminating item */
|
|
|
|
/* Allocate one extra item for the "library" name */
|
|
prov->error_strings =
|
|
OPENSSL_zalloc(sizeof(ERR_STRING_DATA) * (cnt + 1));
|
|
if (prov->error_strings == NULL)
|
|
goto end;
|
|
|
|
/*
|
|
* Set the "library" name.
|
|
*/
|
|
prov->error_strings[0].error = ERR_PACK(prov->error_lib, 0, 0);
|
|
prov->error_strings[0].string = prov->name;
|
|
/*
|
|
* Copy reasonstrings item 0..cnt-1 to prov->error_trings positions
|
|
* 1..cnt.
|
|
*/
|
|
for (cnt2 = 1; cnt2 <= cnt; cnt2++) {
|
|
prov->error_strings[cnt2].error = (int)reasonstrings[cnt2-1].id;
|
|
prov->error_strings[cnt2].string = reasonstrings[cnt2-1].ptr;
|
|
}
|
|
|
|
ERR_load_strings(prov->error_lib, prov->error_strings);
|
|
}
|
|
# endif
|
|
#endif
|
|
|
|
/* With this flag set, this provider has become fully "loaded". */
|
|
prov->flag_initialized = 1;
|
|
ok = 1;
|
|
|
|
end:
|
|
return ok;
|
|
}
|
|
|
|
/*
|
|
* Deactivate a provider. If upcalls is 0 then we suppress any upcalls to a
|
|
* parent provider. If removechildren is 0 then we suppress any calls to remove
|
|
* child providers.
|
|
* Return -1 on failure and the activation count on success
|
|
*/
|
|
static int provider_deactivate(OSSL_PROVIDER *prov, int upcalls,
|
|
int removechildren)
|
|
{
|
|
int count;
|
|
struct provider_store_st *store;
|
|
#ifndef FIPS_MODULE
|
|
int freeparent = 0;
|
|
#endif
|
|
int lock = 1;
|
|
|
|
if (!ossl_assert(prov != NULL))
|
|
return -1;
|
|
|
|
/*
|
|
* No need to lock if we've got no store because we've not been shared with
|
|
* other threads.
|
|
*/
|
|
store = get_provider_store(prov->libctx);
|
|
if (store == NULL)
|
|
lock = 0;
|
|
|
|
if (lock && !CRYPTO_THREAD_read_lock(store->lock))
|
|
return -1;
|
|
if (lock && !CRYPTO_THREAD_write_lock(prov->flag_lock)) {
|
|
CRYPTO_THREAD_unlock(store->lock);
|
|
return -1;
|
|
}
|
|
|
|
CRYPTO_atomic_add(&prov->activatecnt, -1, &count, prov->activatecnt_lock);
|
|
#ifndef FIPS_MODULE
|
|
if (count >= 1 && prov->ischild && upcalls) {
|
|
/*
|
|
* We have had a direct activation in this child libctx so we need to
|
|
* now down the ref count in the parent provider. We do the actual down
|
|
* ref outside of the flag_lock, since it could involve getting other
|
|
* locks.
|
|
*/
|
|
freeparent = 1;
|
|
}
|
|
#endif
|
|
|
|
if (count < 1)
|
|
prov->flag_activated = 0;
|
|
#ifndef FIPS_MODULE
|
|
else
|
|
removechildren = 0;
|
|
#endif
|
|
|
|
#ifndef FIPS_MODULE
|
|
if (removechildren && store != NULL) {
|
|
int i, max = sk_OSSL_PROVIDER_CHILD_CB_num(store->child_cbs);
|
|
OSSL_PROVIDER_CHILD_CB *child_cb;
|
|
|
|
for (i = 0; i < max; i++) {
|
|
child_cb = sk_OSSL_PROVIDER_CHILD_CB_value(store->child_cbs, i);
|
|
child_cb->remove_cb((OSSL_CORE_HANDLE *)prov, child_cb->cbdata);
|
|
}
|
|
}
|
|
#endif
|
|
if (lock) {
|
|
CRYPTO_THREAD_unlock(prov->flag_lock);
|
|
CRYPTO_THREAD_unlock(store->lock);
|
|
/*
|
|
* This can be done outside the lock. We tolerate other threads getting
|
|
* the wrong result briefly when creating OSSL_DECODER_CTXs.
|
|
*/
|
|
#ifndef FIPS_MODULE
|
|
if (count < 1)
|
|
ossl_decoder_cache_flush(prov->libctx);
|
|
#endif
|
|
}
|
|
#ifndef FIPS_MODULE
|
|
if (freeparent)
|
|
ossl_provider_free_parent(prov, 1);
|
|
#endif
|
|
|
|
/* We don't deinit here, that's done in ossl_provider_free() */
|
|
return count;
|
|
}
|
|
|
|
/*
|
|
* Activate a provider.
|
|
* Return -1 on failure and the activation count on success
|
|
*/
|
|
static int provider_activate(OSSL_PROVIDER *prov, int lock, int upcalls)
|
|
{
|
|
int count = -1;
|
|
struct provider_store_st *store;
|
|
int ret = 1;
|
|
|
|
store = prov->store;
|
|
/*
|
|
* If the provider hasn't been added to the store, then we don't need
|
|
* any locks because we've not shared it with other threads.
|
|
*/
|
|
if (store == NULL) {
|
|
lock = 0;
|
|
if (!provider_init(prov))
|
|
return -1;
|
|
}
|
|
|
|
#ifndef FIPS_MODULE
|
|
if (prov->ischild && upcalls && !ossl_provider_up_ref_parent(prov, 1))
|
|
return -1;
|
|
#endif
|
|
|
|
if (lock && !CRYPTO_THREAD_read_lock(store->lock)) {
|
|
#ifndef FIPS_MODULE
|
|
if (prov->ischild && upcalls)
|
|
ossl_provider_free_parent(prov, 1);
|
|
#endif
|
|
return -1;
|
|
}
|
|
|
|
if (lock && !CRYPTO_THREAD_write_lock(prov->flag_lock)) {
|
|
CRYPTO_THREAD_unlock(store->lock);
|
|
#ifndef FIPS_MODULE
|
|
if (prov->ischild && upcalls)
|
|
ossl_provider_free_parent(prov, 1);
|
|
#endif
|
|
return -1;
|
|
}
|
|
if (CRYPTO_atomic_add(&prov->activatecnt, 1, &count, prov->activatecnt_lock)) {
|
|
prov->flag_activated = 1;
|
|
|
|
if (count == 1 && store != NULL) {
|
|
ret = create_provider_children(prov);
|
|
}
|
|
}
|
|
if (lock) {
|
|
CRYPTO_THREAD_unlock(prov->flag_lock);
|
|
CRYPTO_THREAD_unlock(store->lock);
|
|
/*
|
|
* This can be done outside the lock. We tolerate other threads getting
|
|
* the wrong result briefly when creating OSSL_DECODER_CTXs.
|
|
*/
|
|
#ifndef FIPS_MODULE
|
|
if (count == 1)
|
|
ossl_decoder_cache_flush(prov->libctx);
|
|
#endif
|
|
}
|
|
|
|
if (!ret)
|
|
return -1;
|
|
|
|
return count;
|
|
}
|
|
|
|
static int provider_flush_store_cache(const OSSL_PROVIDER *prov)
|
|
{
|
|
struct provider_store_st *store;
|
|
int freeing;
|
|
|
|
if ((store = get_provider_store(prov->libctx)) == NULL)
|
|
return 0;
|
|
|
|
if (!CRYPTO_THREAD_read_lock(store->lock))
|
|
return 0;
|
|
freeing = store->freeing;
|
|
CRYPTO_THREAD_unlock(store->lock);
|
|
|
|
if (!freeing) {
|
|
int acc
|
|
= evp_method_store_cache_flush(prov->libctx)
|
|
#ifndef FIPS_MODULE
|
|
+ ossl_encoder_store_cache_flush(prov->libctx)
|
|
+ ossl_decoder_store_cache_flush(prov->libctx)
|
|
+ ossl_store_loader_store_cache_flush(prov->libctx)
|
|
#endif
|
|
;
|
|
|
|
#ifndef FIPS_MODULE
|
|
return acc == 4;
|
|
#else
|
|
return acc == 1;
|
|
#endif
|
|
}
|
|
return 1;
|
|
}
|
|
|
|
static int provider_remove_store_methods(OSSL_PROVIDER *prov)
|
|
{
|
|
struct provider_store_st *store;
|
|
int freeing;
|
|
|
|
if ((store = get_provider_store(prov->libctx)) == NULL)
|
|
return 0;
|
|
|
|
if (!CRYPTO_THREAD_read_lock(store->lock))
|
|
return 0;
|
|
freeing = store->freeing;
|
|
CRYPTO_THREAD_unlock(store->lock);
|
|
|
|
if (!freeing) {
|
|
int acc;
|
|
|
|
if (!CRYPTO_THREAD_write_lock(prov->opbits_lock))
|
|
return 0;
|
|
OPENSSL_free(prov->operation_bits);
|
|
prov->operation_bits = NULL;
|
|
prov->operation_bits_sz = 0;
|
|
CRYPTO_THREAD_unlock(prov->opbits_lock);
|
|
|
|
acc = evp_method_store_remove_all_provided(prov)
|
|
#ifndef FIPS_MODULE
|
|
+ ossl_encoder_store_remove_all_provided(prov)
|
|
+ ossl_decoder_store_remove_all_provided(prov)
|
|
+ ossl_store_loader_store_remove_all_provided(prov)
|
|
#endif
|
|
;
|
|
|
|
#ifndef FIPS_MODULE
|
|
return acc == 4;
|
|
#else
|
|
return acc == 1;
|
|
#endif
|
|
}
|
|
return 1;
|
|
}
|
|
|
|
int ossl_provider_activate(OSSL_PROVIDER *prov, int upcalls, int aschild)
|
|
{
|
|
int count;
|
|
|
|
if (prov == NULL)
|
|
return 0;
|
|
#ifndef FIPS_MODULE
|
|
/*
|
|
* If aschild is true, then we only actually do the activation if the
|
|
* provider is a child. If its not, this is still success.
|
|
*/
|
|
if (aschild && !prov->ischild)
|
|
return 1;
|
|
#endif
|
|
if ((count = provider_activate(prov, 1, upcalls)) > 0)
|
|
return count == 1 ? provider_flush_store_cache(prov) : 1;
|
|
|
|
return 0;
|
|
}
|
|
|
|
int ossl_provider_deactivate(OSSL_PROVIDER *prov, int removechildren)
|
|
{
|
|
int count;
|
|
|
|
if (prov == NULL
|
|
|| (count = provider_deactivate(prov, 1, removechildren)) < 0)
|
|
return 0;
|
|
return count == 0 ? provider_remove_store_methods(prov) : 1;
|
|
}
|
|
|
|
void *ossl_provider_ctx(const OSSL_PROVIDER *prov)
|
|
{
|
|
return prov != NULL ? prov->provctx : NULL;
|
|
}
|
|
|
|
/*
|
|
* This function only does something once when store->use_fallbacks == 1,
|
|
* and then sets store->use_fallbacks = 0, so the second call and so on is
|
|
* effectively a no-op.
|
|
*/
|
|
static int provider_activate_fallbacks(struct provider_store_st *store)
|
|
{
|
|
int use_fallbacks;
|
|
int activated_fallback_count = 0;
|
|
int ret = 0;
|
|
const OSSL_PROVIDER_INFO *p;
|
|
|
|
if (!CRYPTO_THREAD_read_lock(store->lock))
|
|
return 0;
|
|
use_fallbacks = store->use_fallbacks;
|
|
CRYPTO_THREAD_unlock(store->lock);
|
|
if (!use_fallbacks)
|
|
return 1;
|
|
|
|
if (!CRYPTO_THREAD_write_lock(store->lock))
|
|
return 0;
|
|
/* Check again, just in case another thread changed it */
|
|
use_fallbacks = store->use_fallbacks;
|
|
if (!use_fallbacks) {
|
|
CRYPTO_THREAD_unlock(store->lock);
|
|
return 1;
|
|
}
|
|
|
|
for (p = ossl_predefined_providers; p->name != NULL; p++) {
|
|
OSSL_PROVIDER *prov = NULL;
|
|
|
|
if (!p->is_fallback)
|
|
continue;
|
|
/*
|
|
* We use the internal constructor directly here,
|
|
* otherwise we get a call loop
|
|
*/
|
|
prov = provider_new(p->name, p->init, NULL);
|
|
if (prov == NULL)
|
|
goto err;
|
|
prov->libctx = store->libctx;
|
|
#ifndef FIPS_MODULE
|
|
prov->error_lib = ERR_get_next_error_library();
|
|
#endif
|
|
|
|
/*
|
|
* We are calling provider_activate while holding the store lock. This
|
|
* means the init function will be called while holding a lock. Normally
|
|
* we try to avoid calling a user callback while holding a lock.
|
|
* However, fallbacks are never third party providers so we accept this.
|
|
*/
|
|
if (provider_activate(prov, 0, 0) < 0) {
|
|
ossl_provider_free(prov);
|
|
goto err;
|
|
}
|
|
prov->store = store;
|
|
if (sk_OSSL_PROVIDER_push(store->providers, prov) == 0) {
|
|
ossl_provider_free(prov);
|
|
goto err;
|
|
}
|
|
activated_fallback_count++;
|
|
}
|
|
|
|
if (activated_fallback_count > 0) {
|
|
store->use_fallbacks = 0;
|
|
ret = 1;
|
|
}
|
|
err:
|
|
CRYPTO_THREAD_unlock(store->lock);
|
|
return ret;
|
|
}
|
|
|
|
int ossl_provider_doall_activated(OSSL_LIB_CTX *ctx,
|
|
int (*cb)(OSSL_PROVIDER *provider,
|
|
void *cbdata),
|
|
void *cbdata)
|
|
{
|
|
int ret = 0, curr, max, ref = 0;
|
|
struct provider_store_st *store = get_provider_store(ctx);
|
|
STACK_OF(OSSL_PROVIDER) *provs = NULL;
|
|
|
|
#if !defined(FIPS_MODULE) && !defined(OPENSSL_NO_AUTOLOAD_CONFIG)
|
|
/*
|
|
* Make sure any providers are loaded from config before we try to use
|
|
* them.
|
|
*/
|
|
if (ossl_lib_ctx_is_default(ctx))
|
|
OPENSSL_init_crypto(OPENSSL_INIT_LOAD_CONFIG, NULL);
|
|
#endif
|
|
|
|
if (store == NULL)
|
|
return 1;
|
|
if (!provider_activate_fallbacks(store))
|
|
return 0;
|
|
|
|
/*
|
|
* Under lock, grab a copy of the provider list and up_ref each
|
|
* provider so that they don't disappear underneath us.
|
|
*/
|
|
if (!CRYPTO_THREAD_read_lock(store->lock))
|
|
return 0;
|
|
provs = sk_OSSL_PROVIDER_dup(store->providers);
|
|
if (provs == NULL) {
|
|
CRYPTO_THREAD_unlock(store->lock);
|
|
return 0;
|
|
}
|
|
max = sk_OSSL_PROVIDER_num(provs);
|
|
/*
|
|
* We work backwards through the stack so that we can safely delete items
|
|
* as we go.
|
|
*/
|
|
for (curr = max - 1; curr >= 0; curr--) {
|
|
OSSL_PROVIDER *prov = sk_OSSL_PROVIDER_value(provs, curr);
|
|
|
|
if (!CRYPTO_THREAD_read_lock(prov->flag_lock))
|
|
goto err_unlock;
|
|
if (prov->flag_activated) {
|
|
/*
|
|
* We call CRYPTO_UP_REF directly rather than ossl_provider_up_ref
|
|
* to avoid upping the ref count on the parent provider, which we
|
|
* must not do while holding locks.
|
|
*/
|
|
if (CRYPTO_UP_REF(&prov->refcnt, &ref) <= 0) {
|
|
CRYPTO_THREAD_unlock(prov->flag_lock);
|
|
goto err_unlock;
|
|
}
|
|
/*
|
|
* It's already activated, but we up the activated count to ensure
|
|
* it remains activated until after we've called the user callback.
|
|
* In theory this could mean the parent provider goes inactive,
|
|
* whilst still activated in the child for a short period. That's ok.
|
|
*/
|
|
if (!CRYPTO_atomic_add(&prov->activatecnt, 1, &ref,
|
|
prov->activatecnt_lock)) {
|
|
CRYPTO_DOWN_REF(&prov->refcnt, &ref);
|
|
CRYPTO_THREAD_unlock(prov->flag_lock);
|
|
goto err_unlock;
|
|
}
|
|
} else {
|
|
sk_OSSL_PROVIDER_delete(provs, curr);
|
|
max--;
|
|
}
|
|
CRYPTO_THREAD_unlock(prov->flag_lock);
|
|
}
|
|
CRYPTO_THREAD_unlock(store->lock);
|
|
|
|
/*
|
|
* Now, we sweep through all providers not under lock
|
|
*/
|
|
for (curr = 0; curr < max; curr++) {
|
|
OSSL_PROVIDER *prov = sk_OSSL_PROVIDER_value(provs, curr);
|
|
|
|
if (!cb(prov, cbdata)) {
|
|
curr = -1;
|
|
goto finish;
|
|
}
|
|
}
|
|
curr = -1;
|
|
|
|
ret = 1;
|
|
goto finish;
|
|
|
|
err_unlock:
|
|
CRYPTO_THREAD_unlock(store->lock);
|
|
finish:
|
|
/*
|
|
* The pop_free call doesn't do what we want on an error condition. We
|
|
* either start from the first item in the stack, or part way through if
|
|
* we only processed some of the items.
|
|
*/
|
|
for (curr++; curr < max; curr++) {
|
|
OSSL_PROVIDER *prov = sk_OSSL_PROVIDER_value(provs, curr);
|
|
|
|
if (!CRYPTO_atomic_add(&prov->activatecnt, -1, &ref,
|
|
prov->activatecnt_lock)) {
|
|
ret = 0;
|
|
continue;
|
|
}
|
|
if (ref < 1) {
|
|
/*
|
|
* Looks like we need to deactivate properly. We could just have
|
|
* done this originally, but it involves taking a write lock so
|
|
* we avoid it. We up the count again and do a full deactivation
|
|
*/
|
|
if (CRYPTO_atomic_add(&prov->activatecnt, 1, &ref,
|
|
prov->activatecnt_lock))
|
|
provider_deactivate(prov, 0, 1);
|
|
else
|
|
ret = 0;
|
|
}
|
|
/*
|
|
* As above where we did the up-ref, we don't call ossl_provider_free
|
|
* to avoid making upcalls. There should always be at least one ref
|
|
* to the provider in the store, so this should never drop to 0.
|
|
*/
|
|
if (!CRYPTO_DOWN_REF(&prov->refcnt, &ref)) {
|
|
ret = 0;
|
|
continue;
|
|
}
|
|
/*
|
|
* Not much we can do if this assert ever fails. So we don't use
|
|
* ossl_assert here.
|
|
*/
|
|
assert(ref > 0);
|
|
}
|
|
sk_OSSL_PROVIDER_free(provs);
|
|
return ret;
|
|
}
|
|
|
|
int OSSL_PROVIDER_available(OSSL_LIB_CTX *libctx, const char *name)
|
|
{
|
|
OSSL_PROVIDER *prov = NULL;
|
|
int available = 0;
|
|
struct provider_store_st *store = get_provider_store(libctx);
|
|
|
|
if (store == NULL || !provider_activate_fallbacks(store))
|
|
return 0;
|
|
|
|
prov = ossl_provider_find(libctx, name, 0);
|
|
if (prov != NULL) {
|
|
if (!CRYPTO_THREAD_read_lock(prov->flag_lock))
|
|
return 0;
|
|
available = prov->flag_activated;
|
|
CRYPTO_THREAD_unlock(prov->flag_lock);
|
|
ossl_provider_free(prov);
|
|
}
|
|
return available;
|
|
}
|
|
|
|
/* Getters of Provider Object data */
|
|
const char *ossl_provider_name(const OSSL_PROVIDER *prov)
|
|
{
|
|
return prov->name;
|
|
}
|
|
|
|
const DSO *ossl_provider_dso(const OSSL_PROVIDER *prov)
|
|
{
|
|
return prov->module;
|
|
}
|
|
|
|
const char *ossl_provider_module_name(const OSSL_PROVIDER *prov)
|
|
{
|
|
#ifdef FIPS_MODULE
|
|
return NULL;
|
|
#else
|
|
return DSO_get_filename(prov->module);
|
|
#endif
|
|
}
|
|
|
|
const char *ossl_provider_module_path(const OSSL_PROVIDER *prov)
|
|
{
|
|
#ifdef FIPS_MODULE
|
|
return NULL;
|
|
#else
|
|
/* FIXME: Ensure it's a full path */
|
|
return DSO_get_filename(prov->module);
|
|
#endif
|
|
}
|
|
|
|
void *ossl_provider_prov_ctx(const OSSL_PROVIDER *prov)
|
|
{
|
|
if (prov != NULL)
|
|
return prov->provctx;
|
|
|
|
return NULL;
|
|
}
|
|
|
|
const OSSL_DISPATCH *ossl_provider_get0_dispatch(const OSSL_PROVIDER *prov)
|
|
{
|
|
if (prov != NULL)
|
|
return prov->dispatch;
|
|
|
|
return NULL;
|
|
}
|
|
|
|
OSSL_LIB_CTX *ossl_provider_libctx(const OSSL_PROVIDER *prov)
|
|
{
|
|
return prov != NULL ? prov->libctx : NULL;
|
|
}
|
|
|
|
/* Wrappers around calls to the provider */
|
|
void ossl_provider_teardown(const OSSL_PROVIDER *prov)
|
|
{
|
|
if (prov->teardown != NULL
|
|
#ifndef FIPS_MODULE
|
|
&& !prov->ischild
|
|
#endif
|
|
)
|
|
prov->teardown(prov->provctx);
|
|
}
|
|
|
|
const OSSL_PARAM *ossl_provider_gettable_params(const OSSL_PROVIDER *prov)
|
|
{
|
|
return prov->gettable_params == NULL
|
|
? NULL : prov->gettable_params(prov->provctx);
|
|
}
|
|
|
|
int ossl_provider_get_params(const OSSL_PROVIDER *prov, OSSL_PARAM params[])
|
|
{
|
|
return prov->get_params == NULL
|
|
? 0 : prov->get_params(prov->provctx, params);
|
|
}
|
|
|
|
int ossl_provider_self_test(const OSSL_PROVIDER *prov)
|
|
{
|
|
int ret;
|
|
|
|
if (prov->self_test == NULL)
|
|
return 1;
|
|
ret = prov->self_test(prov->provctx);
|
|
if (ret == 0)
|
|
(void)provider_remove_store_methods((OSSL_PROVIDER *)prov);
|
|
return ret;
|
|
}
|
|
|
|
int ossl_provider_get_capabilities(const OSSL_PROVIDER *prov,
|
|
const char *capability,
|
|
OSSL_CALLBACK *cb,
|
|
void *arg)
|
|
{
|
|
return prov->get_capabilities == NULL
|
|
? 1 : prov->get_capabilities(prov->provctx, capability, cb, arg);
|
|
}
|
|
|
|
const OSSL_ALGORITHM *ossl_provider_query_operation(const OSSL_PROVIDER *prov,
|
|
int operation_id,
|
|
int *no_cache)
|
|
{
|
|
const OSSL_ALGORITHM *res;
|
|
|
|
if (prov->query_operation == NULL)
|
|
return NULL;
|
|
res = prov->query_operation(prov->provctx, operation_id, no_cache);
|
|
#if defined(OPENSSL_NO_CACHED_FETCH)
|
|
/* Forcing the non-caching of queries */
|
|
if (no_cache != NULL)
|
|
*no_cache = 1;
|
|
#endif
|
|
return res;
|
|
}
|
|
|
|
void ossl_provider_unquery_operation(const OSSL_PROVIDER *prov,
|
|
int operation_id,
|
|
const OSSL_ALGORITHM *algs)
|
|
{
|
|
if (prov->unquery_operation != NULL)
|
|
prov->unquery_operation(prov->provctx, operation_id, algs);
|
|
}
|
|
|
|
int ossl_provider_set_operation_bit(OSSL_PROVIDER *provider, size_t bitnum)
|
|
{
|
|
size_t byte = bitnum / 8;
|
|
unsigned char bit = (1 << (bitnum % 8)) & 0xFF;
|
|
|
|
if (!CRYPTO_THREAD_write_lock(provider->opbits_lock))
|
|
return 0;
|
|
if (provider->operation_bits_sz <= byte) {
|
|
unsigned char *tmp = OPENSSL_realloc(provider->operation_bits,
|
|
byte + 1);
|
|
|
|
if (tmp == NULL) {
|
|
CRYPTO_THREAD_unlock(provider->opbits_lock);
|
|
return 0;
|
|
}
|
|
provider->operation_bits = tmp;
|
|
memset(provider->operation_bits + provider->operation_bits_sz,
|
|
'\0', byte + 1 - provider->operation_bits_sz);
|
|
provider->operation_bits_sz = byte + 1;
|
|
}
|
|
provider->operation_bits[byte] |= bit;
|
|
CRYPTO_THREAD_unlock(provider->opbits_lock);
|
|
return 1;
|
|
}
|
|
|
|
int ossl_provider_test_operation_bit(OSSL_PROVIDER *provider, size_t bitnum,
|
|
int *result)
|
|
{
|
|
size_t byte = bitnum / 8;
|
|
unsigned char bit = (1 << (bitnum % 8)) & 0xFF;
|
|
|
|
if (!ossl_assert(result != NULL)) {
|
|
ERR_raise(ERR_LIB_CRYPTO, ERR_R_PASSED_NULL_PARAMETER);
|
|
return 0;
|
|
}
|
|
|
|
*result = 0;
|
|
if (!CRYPTO_THREAD_read_lock(provider->opbits_lock))
|
|
return 0;
|
|
if (provider->operation_bits_sz > byte)
|
|
*result = ((provider->operation_bits[byte] & bit) != 0);
|
|
CRYPTO_THREAD_unlock(provider->opbits_lock);
|
|
return 1;
|
|
}
|
|
|
|
#ifndef FIPS_MODULE
|
|
const OSSL_CORE_HANDLE *ossl_provider_get_parent(OSSL_PROVIDER *prov)
|
|
{
|
|
return prov->handle;
|
|
}
|
|
|
|
int ossl_provider_is_child(const OSSL_PROVIDER *prov)
|
|
{
|
|
return prov->ischild;
|
|
}
|
|
|
|
int ossl_provider_set_child(OSSL_PROVIDER *prov, const OSSL_CORE_HANDLE *handle)
|
|
{
|
|
prov->handle = handle;
|
|
prov->ischild = 1;
|
|
|
|
return 1;
|
|
}
|
|
|
|
int ossl_provider_default_props_update(OSSL_LIB_CTX *libctx, const char *props)
|
|
{
|
|
#ifndef FIPS_MODULE
|
|
struct provider_store_st *store = NULL;
|
|
int i, max;
|
|
OSSL_PROVIDER_CHILD_CB *child_cb;
|
|
|
|
if ((store = get_provider_store(libctx)) == NULL)
|
|
return 0;
|
|
|
|
if (!CRYPTO_THREAD_read_lock(store->lock))
|
|
return 0;
|
|
|
|
max = sk_OSSL_PROVIDER_CHILD_CB_num(store->child_cbs);
|
|
for (i = 0; i < max; i++) {
|
|
child_cb = sk_OSSL_PROVIDER_CHILD_CB_value(store->child_cbs, i);
|
|
child_cb->global_props_cb(props, child_cb->cbdata);
|
|
}
|
|
|
|
CRYPTO_THREAD_unlock(store->lock);
|
|
#endif
|
|
return 1;
|
|
}
|
|
|
|
static int ossl_provider_register_child_cb(const OSSL_CORE_HANDLE *handle,
|
|
int (*create_cb)(
|
|
const OSSL_CORE_HANDLE *provider,
|
|
void *cbdata),
|
|
int (*remove_cb)(
|
|
const OSSL_CORE_HANDLE *provider,
|
|
void *cbdata),
|
|
int (*global_props_cb)(
|
|
const char *props,
|
|
void *cbdata),
|
|
void *cbdata)
|
|
{
|
|
/*
|
|
* This is really an OSSL_PROVIDER that we created and cast to
|
|
* OSSL_CORE_HANDLE originally. Therefore it is safe to cast it back.
|
|
*/
|
|
OSSL_PROVIDER *thisprov = (OSSL_PROVIDER *)handle;
|
|
OSSL_PROVIDER *prov;
|
|
OSSL_LIB_CTX *libctx = thisprov->libctx;
|
|
struct provider_store_st *store = NULL;
|
|
int ret = 0, i, max;
|
|
OSSL_PROVIDER_CHILD_CB *child_cb;
|
|
char *propsstr = NULL;
|
|
|
|
if ((store = get_provider_store(libctx)) == NULL)
|
|
return 0;
|
|
|
|
child_cb = OPENSSL_malloc(sizeof(*child_cb));
|
|
if (child_cb == NULL)
|
|
return 0;
|
|
child_cb->prov = thisprov;
|
|
child_cb->create_cb = create_cb;
|
|
child_cb->remove_cb = remove_cb;
|
|
child_cb->global_props_cb = global_props_cb;
|
|
child_cb->cbdata = cbdata;
|
|
|
|
if (!CRYPTO_THREAD_write_lock(store->lock)) {
|
|
OPENSSL_free(child_cb);
|
|
return 0;
|
|
}
|
|
propsstr = evp_get_global_properties_str(libctx, 0);
|
|
|
|
if (propsstr != NULL) {
|
|
global_props_cb(propsstr, cbdata);
|
|
OPENSSL_free(propsstr);
|
|
}
|
|
max = sk_OSSL_PROVIDER_num(store->providers);
|
|
for (i = 0; i < max; i++) {
|
|
int activated;
|
|
|
|
prov = sk_OSSL_PROVIDER_value(store->providers, i);
|
|
|
|
if (!CRYPTO_THREAD_read_lock(prov->flag_lock))
|
|
break;
|
|
activated = prov->flag_activated;
|
|
CRYPTO_THREAD_unlock(prov->flag_lock);
|
|
/*
|
|
* We hold the store lock while calling the user callback. This means
|
|
* that the user callback must be short and simple and not do anything
|
|
* likely to cause a deadlock. We don't hold the flag_lock during this
|
|
* call. In theory this means that another thread could deactivate it
|
|
* while we are calling create. This is ok because the other thread
|
|
* will also call remove_cb, but won't be able to do so until we release
|
|
* the store lock.
|
|
*/
|
|
if (activated && !create_cb((OSSL_CORE_HANDLE *)prov, cbdata))
|
|
break;
|
|
}
|
|
if (i == max) {
|
|
/* Success */
|
|
ret = sk_OSSL_PROVIDER_CHILD_CB_push(store->child_cbs, child_cb);
|
|
}
|
|
if (i != max || ret <= 0) {
|
|
/* Failed during creation. Remove everything we just added */
|
|
for (; i >= 0; i--) {
|
|
prov = sk_OSSL_PROVIDER_value(store->providers, i);
|
|
remove_cb((OSSL_CORE_HANDLE *)prov, cbdata);
|
|
}
|
|
OPENSSL_free(child_cb);
|
|
ret = 0;
|
|
}
|
|
CRYPTO_THREAD_unlock(store->lock);
|
|
|
|
return ret;
|
|
}
|
|
|
|
static void ossl_provider_deregister_child_cb(const OSSL_CORE_HANDLE *handle)
|
|
{
|
|
/*
|
|
* This is really an OSSL_PROVIDER that we created and cast to
|
|
* OSSL_CORE_HANDLE originally. Therefore it is safe to cast it back.
|
|
*/
|
|
OSSL_PROVIDER *thisprov = (OSSL_PROVIDER *)handle;
|
|
OSSL_LIB_CTX *libctx = thisprov->libctx;
|
|
struct provider_store_st *store = NULL;
|
|
int i, max;
|
|
OSSL_PROVIDER_CHILD_CB *child_cb;
|
|
|
|
if ((store = get_provider_store(libctx)) == NULL)
|
|
return;
|
|
|
|
if (!CRYPTO_THREAD_write_lock(store->lock))
|
|
return;
|
|
max = sk_OSSL_PROVIDER_CHILD_CB_num(store->child_cbs);
|
|
for (i = 0; i < max; i++) {
|
|
child_cb = sk_OSSL_PROVIDER_CHILD_CB_value(store->child_cbs, i);
|
|
if (child_cb->prov == thisprov) {
|
|
/* Found an entry */
|
|
sk_OSSL_PROVIDER_CHILD_CB_delete(store->child_cbs, i);
|
|
OPENSSL_free(child_cb);
|
|
break;
|
|
}
|
|
}
|
|
CRYPTO_THREAD_unlock(store->lock);
|
|
}
|
|
#endif
|
|
|
|
/*-
|
|
* Core functions for the provider
|
|
* ===============================
|
|
*
|
|
* This is the set of functions that the core makes available to the provider
|
|
*/
|
|
|
|
/*
|
|
* This returns a list of Provider Object parameters with their types, for
|
|
* discovery. We do not expect that many providers will use this, but one
|
|
* never knows.
|
|
*/
|
|
static const OSSL_PARAM param_types[] = {
|
|
OSSL_PARAM_DEFN(OSSL_PROV_PARAM_CORE_VERSION, OSSL_PARAM_UTF8_PTR, NULL, 0),
|
|
OSSL_PARAM_DEFN(OSSL_PROV_PARAM_CORE_PROV_NAME, OSSL_PARAM_UTF8_PTR,
|
|
NULL, 0),
|
|
#ifndef FIPS_MODULE
|
|
OSSL_PARAM_DEFN(OSSL_PROV_PARAM_CORE_MODULE_FILENAME, OSSL_PARAM_UTF8_PTR,
|
|
NULL, 0),
|
|
#endif
|
|
OSSL_PARAM_END
|
|
};
|
|
|
|
/*
|
|
* Forward declare all the functions that are provided aa dispatch.
|
|
* This ensures that the compiler will complain if they aren't defined
|
|
* with the correct signature.
|
|
*/
|
|
static OSSL_FUNC_core_gettable_params_fn core_gettable_params;
|
|
static OSSL_FUNC_core_get_params_fn core_get_params;
|
|
static OSSL_FUNC_core_get_libctx_fn core_get_libctx;
|
|
static OSSL_FUNC_core_thread_start_fn core_thread_start;
|
|
#ifndef FIPS_MODULE
|
|
static OSSL_FUNC_core_new_error_fn core_new_error;
|
|
static OSSL_FUNC_core_set_error_debug_fn core_set_error_debug;
|
|
static OSSL_FUNC_core_vset_error_fn core_vset_error;
|
|
static OSSL_FUNC_core_set_error_mark_fn core_set_error_mark;
|
|
static OSSL_FUNC_core_clear_last_error_mark_fn core_clear_last_error_mark;
|
|
static OSSL_FUNC_core_pop_error_to_mark_fn core_pop_error_to_mark;
|
|
OSSL_FUNC_BIO_new_file_fn ossl_core_bio_new_file;
|
|
OSSL_FUNC_BIO_new_membuf_fn ossl_core_bio_new_mem_buf;
|
|
OSSL_FUNC_BIO_read_ex_fn ossl_core_bio_read_ex;
|
|
OSSL_FUNC_BIO_write_ex_fn ossl_core_bio_write_ex;
|
|
OSSL_FUNC_BIO_gets_fn ossl_core_bio_gets;
|
|
OSSL_FUNC_BIO_puts_fn ossl_core_bio_puts;
|
|
OSSL_FUNC_BIO_up_ref_fn ossl_core_bio_up_ref;
|
|
OSSL_FUNC_BIO_free_fn ossl_core_bio_free;
|
|
OSSL_FUNC_BIO_vprintf_fn ossl_core_bio_vprintf;
|
|
OSSL_FUNC_BIO_vsnprintf_fn BIO_vsnprintf;
|
|
static OSSL_FUNC_self_test_cb_fn core_self_test_get_callback;
|
|
static OSSL_FUNC_get_entropy_fn rand_get_entropy;
|
|
static OSSL_FUNC_get_user_entropy_fn rand_get_user_entropy;
|
|
static OSSL_FUNC_cleanup_entropy_fn rand_cleanup_entropy;
|
|
static OSSL_FUNC_cleanup_user_entropy_fn rand_cleanup_user_entropy;
|
|
static OSSL_FUNC_get_nonce_fn rand_get_nonce;
|
|
static OSSL_FUNC_get_user_nonce_fn rand_get_user_nonce;
|
|
static OSSL_FUNC_cleanup_nonce_fn rand_cleanup_nonce;
|
|
static OSSL_FUNC_cleanup_user_nonce_fn rand_cleanup_user_nonce;
|
|
#endif
|
|
OSSL_FUNC_CRYPTO_malloc_fn CRYPTO_malloc;
|
|
OSSL_FUNC_CRYPTO_zalloc_fn CRYPTO_zalloc;
|
|
OSSL_FUNC_CRYPTO_free_fn CRYPTO_free;
|
|
OSSL_FUNC_CRYPTO_clear_free_fn CRYPTO_clear_free;
|
|
OSSL_FUNC_CRYPTO_realloc_fn CRYPTO_realloc;
|
|
OSSL_FUNC_CRYPTO_clear_realloc_fn CRYPTO_clear_realloc;
|
|
OSSL_FUNC_CRYPTO_secure_malloc_fn CRYPTO_secure_malloc;
|
|
OSSL_FUNC_CRYPTO_secure_zalloc_fn CRYPTO_secure_zalloc;
|
|
OSSL_FUNC_CRYPTO_secure_free_fn CRYPTO_secure_free;
|
|
OSSL_FUNC_CRYPTO_secure_clear_free_fn CRYPTO_secure_clear_free;
|
|
OSSL_FUNC_CRYPTO_secure_allocated_fn CRYPTO_secure_allocated;
|
|
OSSL_FUNC_OPENSSL_cleanse_fn OPENSSL_cleanse;
|
|
#ifndef FIPS_MODULE
|
|
OSSL_FUNC_provider_register_child_cb_fn ossl_provider_register_child_cb;
|
|
OSSL_FUNC_provider_deregister_child_cb_fn ossl_provider_deregister_child_cb;
|
|
static OSSL_FUNC_provider_name_fn core_provider_get0_name;
|
|
static OSSL_FUNC_provider_get0_provider_ctx_fn core_provider_get0_provider_ctx;
|
|
static OSSL_FUNC_provider_get0_dispatch_fn core_provider_get0_dispatch;
|
|
static OSSL_FUNC_provider_up_ref_fn core_provider_up_ref_intern;
|
|
static OSSL_FUNC_provider_free_fn core_provider_free_intern;
|
|
static OSSL_FUNC_core_obj_add_sigid_fn core_obj_add_sigid;
|
|
static OSSL_FUNC_core_obj_create_fn core_obj_create;
|
|
#endif
|
|
|
|
static const OSSL_PARAM *core_gettable_params(const OSSL_CORE_HANDLE *handle)
|
|
{
|
|
return param_types;
|
|
}
|
|
|
|
static int core_get_params(const OSSL_CORE_HANDLE *handle, OSSL_PARAM params[])
|
|
{
|
|
int i;
|
|
OSSL_PARAM *p;
|
|
/*
|
|
* We created this object originally and we know it is actually an
|
|
* OSSL_PROVIDER *, so the cast is safe
|
|
*/
|
|
OSSL_PROVIDER *prov = (OSSL_PROVIDER *)handle;
|
|
|
|
if ((p = OSSL_PARAM_locate(params, OSSL_PROV_PARAM_CORE_VERSION)) != NULL)
|
|
OSSL_PARAM_set_utf8_ptr(p, OPENSSL_VERSION_STR);
|
|
if ((p = OSSL_PARAM_locate(params, OSSL_PROV_PARAM_CORE_PROV_NAME)) != NULL)
|
|
OSSL_PARAM_set_utf8_ptr(p, prov->name);
|
|
|
|
#ifndef FIPS_MODULE
|
|
if ((p = OSSL_PARAM_locate(params,
|
|
OSSL_PROV_PARAM_CORE_MODULE_FILENAME)) != NULL)
|
|
OSSL_PARAM_set_utf8_ptr(p, ossl_provider_module_path(prov));
|
|
#endif
|
|
|
|
if (prov->parameters == NULL)
|
|
return 1;
|
|
|
|
for (i = 0; i < sk_INFOPAIR_num(prov->parameters); i++) {
|
|
INFOPAIR *pair = sk_INFOPAIR_value(prov->parameters, i);
|
|
|
|
if ((p = OSSL_PARAM_locate(params, pair->name)) != NULL)
|
|
OSSL_PARAM_set_utf8_ptr(p, pair->value);
|
|
}
|
|
return 1;
|
|
}
|
|
|
|
static OPENSSL_CORE_CTX *core_get_libctx(const OSSL_CORE_HANDLE *handle)
|
|
{
|
|
/*
|
|
* We created this object originally and we know it is actually an
|
|
* OSSL_PROVIDER *, so the cast is safe
|
|
*/
|
|
OSSL_PROVIDER *prov = (OSSL_PROVIDER *)handle;
|
|
|
|
/*
|
|
* Using ossl_provider_libctx would be wrong as that returns
|
|
* NULL for |prov| == NULL and NULL libctx has a special meaning
|
|
* that does not apply here. Here |prov| == NULL can happen only in
|
|
* case of a coding error.
|
|
*/
|
|
assert(prov != NULL);
|
|
return (OPENSSL_CORE_CTX *)prov->libctx;
|
|
}
|
|
|
|
static int core_thread_start(const OSSL_CORE_HANDLE *handle,
|
|
OSSL_thread_stop_handler_fn handfn,
|
|
void *arg)
|
|
{
|
|
/*
|
|
* We created this object originally and we know it is actually an
|
|
* OSSL_PROVIDER *, so the cast is safe
|
|
*/
|
|
OSSL_PROVIDER *prov = (OSSL_PROVIDER *)handle;
|
|
|
|
return ossl_init_thread_start(prov, arg, handfn);
|
|
}
|
|
|
|
/*
|
|
* The FIPS module inner provider doesn't implement these. They aren't
|
|
* needed there, since the FIPS module upcalls are always the outer provider
|
|
* ones.
|
|
*/
|
|
#ifndef FIPS_MODULE
|
|
/*
|
|
* These error functions should use |handle| to select the proper
|
|
* library context to report in the correct error stack if error
|
|
* stacks become tied to the library context.
|
|
* We cannot currently do that since there's no support for it in the
|
|
* ERR subsystem.
|
|
*/
|
|
static void core_new_error(const OSSL_CORE_HANDLE *handle)
|
|
{
|
|
ERR_new();
|
|
}
|
|
|
|
static void core_set_error_debug(const OSSL_CORE_HANDLE *handle,
|
|
const char *file, int line, const char *func)
|
|
{
|
|
ERR_set_debug(file, line, func);
|
|
}
|
|
|
|
static void core_vset_error(const OSSL_CORE_HANDLE *handle,
|
|
uint32_t reason, const char *fmt, va_list args)
|
|
{
|
|
/*
|
|
* We created this object originally and we know it is actually an
|
|
* OSSL_PROVIDER *, so the cast is safe
|
|
*/
|
|
OSSL_PROVIDER *prov = (OSSL_PROVIDER *)handle;
|
|
|
|
/*
|
|
* If the uppermost 8 bits are non-zero, it's an OpenSSL library
|
|
* error and will be treated as such. Otherwise, it's a new style
|
|
* provider error and will be treated as such.
|
|
*/
|
|
if (ERR_GET_LIB(reason) != 0) {
|
|
ERR_vset_error(ERR_GET_LIB(reason), ERR_GET_REASON(reason), fmt, args);
|
|
} else {
|
|
ERR_vset_error(prov->error_lib, (int)reason, fmt, args);
|
|
}
|
|
}
|
|
|
|
static int core_set_error_mark(const OSSL_CORE_HANDLE *handle)
|
|
{
|
|
return ERR_set_mark();
|
|
}
|
|
|
|
static int core_clear_last_error_mark(const OSSL_CORE_HANDLE *handle)
|
|
{
|
|
return ERR_clear_last_mark();
|
|
}
|
|
|
|
static int core_pop_error_to_mark(const OSSL_CORE_HANDLE *handle)
|
|
{
|
|
return ERR_pop_to_mark();
|
|
}
|
|
|
|
static void core_self_test_get_callback(OPENSSL_CORE_CTX *libctx,
|
|
OSSL_CALLBACK **cb, void **cbarg)
|
|
{
|
|
OSSL_SELF_TEST_get_callback((OSSL_LIB_CTX *)libctx, cb, cbarg);
|
|
}
|
|
|
|
static size_t rand_get_entropy(const OSSL_CORE_HANDLE *handle,
|
|
unsigned char **pout, int entropy,
|
|
size_t min_len, size_t max_len)
|
|
{
|
|
return ossl_rand_get_entropy((OSSL_LIB_CTX *)core_get_libctx(handle),
|
|
pout, entropy, min_len, max_len);
|
|
}
|
|
|
|
static size_t rand_get_user_entropy(const OSSL_CORE_HANDLE *handle,
|
|
unsigned char **pout, int entropy,
|
|
size_t min_len, size_t max_len)
|
|
{
|
|
return ossl_rand_get_user_entropy((OSSL_LIB_CTX *)core_get_libctx(handle),
|
|
pout, entropy, min_len, max_len);
|
|
}
|
|
|
|
static void rand_cleanup_entropy(const OSSL_CORE_HANDLE *handle,
|
|
unsigned char *buf, size_t len)
|
|
{
|
|
ossl_rand_cleanup_entropy((OSSL_LIB_CTX *)core_get_libctx(handle),
|
|
buf, len);
|
|
}
|
|
|
|
static void rand_cleanup_user_entropy(const OSSL_CORE_HANDLE *handle,
|
|
unsigned char *buf, size_t len)
|
|
{
|
|
ossl_rand_cleanup_user_entropy((OSSL_LIB_CTX *)core_get_libctx(handle),
|
|
buf, len);
|
|
}
|
|
|
|
static size_t rand_get_nonce(const OSSL_CORE_HANDLE *handle,
|
|
unsigned char **pout,
|
|
size_t min_len, size_t max_len,
|
|
const void *salt, size_t salt_len)
|
|
{
|
|
return ossl_rand_get_nonce((OSSL_LIB_CTX *)core_get_libctx(handle),
|
|
pout, min_len, max_len, salt, salt_len);
|
|
}
|
|
|
|
static size_t rand_get_user_nonce(const OSSL_CORE_HANDLE *handle,
|
|
unsigned char **pout,
|
|
size_t min_len, size_t max_len,
|
|
const void *salt, size_t salt_len)
|
|
{
|
|
return ossl_rand_get_user_nonce((OSSL_LIB_CTX *)core_get_libctx(handle),
|
|
pout, min_len, max_len, salt, salt_len);
|
|
}
|
|
|
|
static void rand_cleanup_nonce(const OSSL_CORE_HANDLE *handle,
|
|
unsigned char *buf, size_t len)
|
|
{
|
|
ossl_rand_cleanup_nonce((OSSL_LIB_CTX *)core_get_libctx(handle),
|
|
buf, len);
|
|
}
|
|
|
|
static void rand_cleanup_user_nonce(const OSSL_CORE_HANDLE *handle,
|
|
unsigned char *buf, size_t len)
|
|
{
|
|
ossl_rand_cleanup_user_nonce((OSSL_LIB_CTX *)core_get_libctx(handle),
|
|
buf, len);
|
|
}
|
|
|
|
static const char *core_provider_get0_name(const OSSL_CORE_HANDLE *prov)
|
|
{
|
|
return OSSL_PROVIDER_get0_name((const OSSL_PROVIDER *)prov);
|
|
}
|
|
|
|
static void *core_provider_get0_provider_ctx(const OSSL_CORE_HANDLE *prov)
|
|
{
|
|
return OSSL_PROVIDER_get0_provider_ctx((const OSSL_PROVIDER *)prov);
|
|
}
|
|
|
|
static const OSSL_DISPATCH *
|
|
core_provider_get0_dispatch(const OSSL_CORE_HANDLE *prov)
|
|
{
|
|
return OSSL_PROVIDER_get0_dispatch((const OSSL_PROVIDER *)prov);
|
|
}
|
|
|
|
static int core_provider_up_ref_intern(const OSSL_CORE_HANDLE *prov,
|
|
int activate)
|
|
{
|
|
return provider_up_ref_intern((OSSL_PROVIDER *)prov, activate);
|
|
}
|
|
|
|
static int core_provider_free_intern(const OSSL_CORE_HANDLE *prov,
|
|
int deactivate)
|
|
{
|
|
return provider_free_intern((OSSL_PROVIDER *)prov, deactivate);
|
|
}
|
|
|
|
static int core_obj_add_sigid(const OSSL_CORE_HANDLE *prov,
|
|
const char *sign_name, const char *digest_name,
|
|
const char *pkey_name)
|
|
{
|
|
int sign_nid = OBJ_txt2nid(sign_name);
|
|
int digest_nid = NID_undef;
|
|
int pkey_nid = OBJ_txt2nid(pkey_name);
|
|
|
|
if (digest_name != NULL && digest_name[0] != '\0'
|
|
&& (digest_nid = OBJ_txt2nid(digest_name)) == NID_undef)
|
|
return 0;
|
|
|
|
if (sign_nid == NID_undef)
|
|
return 0;
|
|
|
|
/*
|
|
* Check if it already exists. This is a success if so (even if we don't
|
|
* have nids for the digest/pkey)
|
|
*/
|
|
if (OBJ_find_sigid_algs(sign_nid, NULL, NULL))
|
|
return 1;
|
|
|
|
if (pkey_nid == NID_undef)
|
|
return 0;
|
|
|
|
return OBJ_add_sigid(sign_nid, digest_nid, pkey_nid);
|
|
}
|
|
|
|
static int core_obj_create(const OSSL_CORE_HANDLE *prov, const char *oid,
|
|
const char *sn, const char *ln)
|
|
{
|
|
/* Check if it already exists and create it if not */
|
|
return OBJ_txt2nid(oid) != NID_undef
|
|
|| OBJ_create(oid, sn, ln) != NID_undef;
|
|
}
|
|
#endif /* FIPS_MODULE */
|
|
|
|
/*
|
|
* Functions provided by the core.
|
|
*/
|
|
static const OSSL_DISPATCH core_dispatch_[] = {
|
|
{ OSSL_FUNC_CORE_GETTABLE_PARAMS, (void (*)(void))core_gettable_params },
|
|
{ OSSL_FUNC_CORE_GET_PARAMS, (void (*)(void))core_get_params },
|
|
{ OSSL_FUNC_CORE_GET_LIBCTX, (void (*)(void))core_get_libctx },
|
|
{ OSSL_FUNC_CORE_THREAD_START, (void (*)(void))core_thread_start },
|
|
#ifndef FIPS_MODULE
|
|
{ OSSL_FUNC_CORE_NEW_ERROR, (void (*)(void))core_new_error },
|
|
{ OSSL_FUNC_CORE_SET_ERROR_DEBUG, (void (*)(void))core_set_error_debug },
|
|
{ OSSL_FUNC_CORE_VSET_ERROR, (void (*)(void))core_vset_error },
|
|
{ OSSL_FUNC_CORE_SET_ERROR_MARK, (void (*)(void))core_set_error_mark },
|
|
{ OSSL_FUNC_CORE_CLEAR_LAST_ERROR_MARK,
|
|
(void (*)(void))core_clear_last_error_mark },
|
|
{ OSSL_FUNC_CORE_POP_ERROR_TO_MARK, (void (*)(void))core_pop_error_to_mark },
|
|
{ OSSL_FUNC_BIO_NEW_FILE, (void (*)(void))ossl_core_bio_new_file },
|
|
{ OSSL_FUNC_BIO_NEW_MEMBUF, (void (*)(void))ossl_core_bio_new_mem_buf },
|
|
{ OSSL_FUNC_BIO_READ_EX, (void (*)(void))ossl_core_bio_read_ex },
|
|
{ OSSL_FUNC_BIO_WRITE_EX, (void (*)(void))ossl_core_bio_write_ex },
|
|
{ OSSL_FUNC_BIO_GETS, (void (*)(void))ossl_core_bio_gets },
|
|
{ OSSL_FUNC_BIO_PUTS, (void (*)(void))ossl_core_bio_puts },
|
|
{ OSSL_FUNC_BIO_CTRL, (void (*)(void))ossl_core_bio_ctrl },
|
|
{ OSSL_FUNC_BIO_UP_REF, (void (*)(void))ossl_core_bio_up_ref },
|
|
{ OSSL_FUNC_BIO_FREE, (void (*)(void))ossl_core_bio_free },
|
|
{ OSSL_FUNC_BIO_VPRINTF, (void (*)(void))ossl_core_bio_vprintf },
|
|
{ OSSL_FUNC_BIO_VSNPRINTF, (void (*)(void))BIO_vsnprintf },
|
|
{ OSSL_FUNC_SELF_TEST_CB, (void (*)(void))core_self_test_get_callback },
|
|
{ OSSL_FUNC_GET_ENTROPY, (void (*)(void))rand_get_entropy },
|
|
{ OSSL_FUNC_GET_USER_ENTROPY, (void (*)(void))rand_get_user_entropy },
|
|
{ OSSL_FUNC_CLEANUP_ENTROPY, (void (*)(void))rand_cleanup_entropy },
|
|
{ OSSL_FUNC_CLEANUP_USER_ENTROPY, (void (*)(void))rand_cleanup_user_entropy },
|
|
{ OSSL_FUNC_GET_NONCE, (void (*)(void))rand_get_nonce },
|
|
{ OSSL_FUNC_GET_USER_NONCE, (void (*)(void))rand_get_user_nonce },
|
|
{ OSSL_FUNC_CLEANUP_NONCE, (void (*)(void))rand_cleanup_nonce },
|
|
{ OSSL_FUNC_CLEANUP_USER_NONCE, (void (*)(void))rand_cleanup_user_nonce },
|
|
#endif
|
|
{ OSSL_FUNC_CRYPTO_MALLOC, (void (*)(void))CRYPTO_malloc },
|
|
{ OSSL_FUNC_CRYPTO_ZALLOC, (void (*)(void))CRYPTO_zalloc },
|
|
{ OSSL_FUNC_CRYPTO_FREE, (void (*)(void))CRYPTO_free },
|
|
{ OSSL_FUNC_CRYPTO_CLEAR_FREE, (void (*)(void))CRYPTO_clear_free },
|
|
{ OSSL_FUNC_CRYPTO_REALLOC, (void (*)(void))CRYPTO_realloc },
|
|
{ OSSL_FUNC_CRYPTO_CLEAR_REALLOC, (void (*)(void))CRYPTO_clear_realloc },
|
|
{ OSSL_FUNC_CRYPTO_SECURE_MALLOC, (void (*)(void))CRYPTO_secure_malloc },
|
|
{ OSSL_FUNC_CRYPTO_SECURE_ZALLOC, (void (*)(void))CRYPTO_secure_zalloc },
|
|
{ OSSL_FUNC_CRYPTO_SECURE_FREE, (void (*)(void))CRYPTO_secure_free },
|
|
{ OSSL_FUNC_CRYPTO_SECURE_CLEAR_FREE,
|
|
(void (*)(void))CRYPTO_secure_clear_free },
|
|
{ OSSL_FUNC_CRYPTO_SECURE_ALLOCATED,
|
|
(void (*)(void))CRYPTO_secure_allocated },
|
|
{ OSSL_FUNC_OPENSSL_CLEANSE, (void (*)(void))OPENSSL_cleanse },
|
|
#ifndef FIPS_MODULE
|
|
{ OSSL_FUNC_PROVIDER_REGISTER_CHILD_CB,
|
|
(void (*)(void))ossl_provider_register_child_cb },
|
|
{ OSSL_FUNC_PROVIDER_DEREGISTER_CHILD_CB,
|
|
(void (*)(void))ossl_provider_deregister_child_cb },
|
|
{ OSSL_FUNC_PROVIDER_NAME,
|
|
(void (*)(void))core_provider_get0_name },
|
|
{ OSSL_FUNC_PROVIDER_GET0_PROVIDER_CTX,
|
|
(void (*)(void))core_provider_get0_provider_ctx },
|
|
{ OSSL_FUNC_PROVIDER_GET0_DISPATCH,
|
|
(void (*)(void))core_provider_get0_dispatch },
|
|
{ OSSL_FUNC_PROVIDER_UP_REF,
|
|
(void (*)(void))core_provider_up_ref_intern },
|
|
{ OSSL_FUNC_PROVIDER_FREE,
|
|
(void (*)(void))core_provider_free_intern },
|
|
{ OSSL_FUNC_CORE_OBJ_ADD_SIGID, (void (*)(void))core_obj_add_sigid },
|
|
{ OSSL_FUNC_CORE_OBJ_CREATE, (void (*)(void))core_obj_create },
|
|
#endif
|
|
OSSL_DISPATCH_END
|
|
};
|
|
static const OSSL_DISPATCH *core_dispatch = core_dispatch_;
|