mirror of
https://github.com/openssl/openssl.git
synced 2024-12-21 06:09:35 +08:00
e077455e9e
Since OPENSSL_malloc() and friends report ERR_R_MALLOC_FAILURE, and at least handle the file name and line number they are called from, there's no need to report ERR_R_MALLOC_FAILURE where they are called directly, or when SSLfatal() and RLAYERfatal() is used, the reason `ERR_R_MALLOC_FAILURE` is changed to `ERR_R_CRYPTO_LIB`. There were a number of places where `ERR_R_MALLOC_FAILURE` was reported even though it was a function from a different sub-system that was called. Those places are changed to report ERR_R_{lib}_LIB, where {lib} is the name of that sub-system. Some of them are tricky to get right, as we have a lot of functions that belong in the ASN1 sub-system, and all the `sk_` calls or from the CRYPTO sub-system. Some extra adaptation was necessary where there were custom OPENSSL_malloc() wrappers, and some bugs are fixed alongside these changes. Reviewed-by: Tomas Mraz <tomas@openssl.org> Reviewed-by: Hugo Landau <hlandau@openssl.org> (Merged from https://github.com/openssl/openssl/pull/19301)
676 lines
20 KiB
C
676 lines
20 KiB
C
/*
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* Copyright 2020-2022 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/core.h>
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#include <openssl/core_dispatch.h>
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#include <openssl/decoder.h>
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#include <openssl/ui.h>
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#include "internal/core.h"
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#include "internal/namemap.h"
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#include "internal/property.h"
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#include "internal/provider.h"
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#include "crypto/decoder.h"
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#include "encoder_local.h"
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#include "crypto/context.h"
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/*
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* Decoder can have multiple names, separated with colons in a name string
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*/
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#define NAME_SEPARATOR ':'
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/* Simple method structure constructor and destructor */
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static OSSL_DECODER *ossl_decoder_new(void)
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{
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OSSL_DECODER *decoder = NULL;
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if ((decoder = OPENSSL_zalloc(sizeof(*decoder))) == NULL)
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return NULL;
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if ((decoder->base.lock = CRYPTO_THREAD_lock_new()) == NULL) {
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OSSL_DECODER_free(decoder);
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ERR_raise(ERR_LIB_OSSL_DECODER, ERR_R_CRYPTO_LIB);
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return NULL;
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}
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decoder->base.refcnt = 1;
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return decoder;
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}
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int OSSL_DECODER_up_ref(OSSL_DECODER *decoder)
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{
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int ref = 0;
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CRYPTO_UP_REF(&decoder->base.refcnt, &ref, decoder->base.lock);
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return 1;
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}
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void OSSL_DECODER_free(OSSL_DECODER *decoder)
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{
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int ref = 0;
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if (decoder == NULL)
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return;
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CRYPTO_DOWN_REF(&decoder->base.refcnt, &ref, decoder->base.lock);
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if (ref > 0)
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return;
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OPENSSL_free(decoder->base.name);
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ossl_property_free(decoder->base.parsed_propdef);
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ossl_provider_free(decoder->base.prov);
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CRYPTO_THREAD_lock_free(decoder->base.lock);
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OPENSSL_free(decoder);
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}
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/* Data to be passed through ossl_method_construct() */
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struct decoder_data_st {
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OSSL_LIB_CTX *libctx;
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int id; /* For get_decoder_from_store() */
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const char *names; /* For get_decoder_from_store() */
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const char *propquery; /* For get_decoder_from_store() */
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OSSL_METHOD_STORE *tmp_store; /* For get_tmp_decoder_store() */
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unsigned int flag_construct_error_occurred : 1;
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};
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/*
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* Generic routines to fetch / create DECODER methods with
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* ossl_method_construct()
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*/
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/* Temporary decoder method store, constructor and destructor */
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static void *get_tmp_decoder_store(void *data)
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{
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struct decoder_data_st *methdata = data;
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if (methdata->tmp_store == NULL)
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methdata->tmp_store = ossl_method_store_new(methdata->libctx);
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return methdata->tmp_store;
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}
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static void dealloc_tmp_decoder_store(void *store)
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{
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if (store != NULL)
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ossl_method_store_free(store);
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}
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/* Get the permanent decoder store */
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static OSSL_METHOD_STORE *get_decoder_store(OSSL_LIB_CTX *libctx)
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{
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return ossl_lib_ctx_get_data(libctx, OSSL_LIB_CTX_DECODER_STORE_INDEX);
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}
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static int reserve_decoder_store(void *store, void *data)
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{
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struct decoder_data_st *methdata = data;
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if (store == NULL
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&& (store = get_decoder_store(methdata->libctx)) == NULL)
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return 0;
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return ossl_method_lock_store(store);
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}
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static int unreserve_decoder_store(void *store, void *data)
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{
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struct decoder_data_st *methdata = data;
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if (store == NULL
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&& (store = get_decoder_store(methdata->libctx)) == NULL)
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return 0;
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return ossl_method_unlock_store(store);
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}
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/* Get decoder methods from a store, or put one in */
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static void *get_decoder_from_store(void *store, const OSSL_PROVIDER **prov,
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void *data)
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{
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struct decoder_data_st *methdata = data;
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void *method = NULL;
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int id;
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/*
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* get_decoder_from_store() is only called to try and get the method
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* that OSSL_DECODER_fetch() is asking for, and the name or name id are
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* passed via methdata.
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*/
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if ((id = methdata->id) == 0 && methdata->names != NULL) {
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OSSL_NAMEMAP *namemap = ossl_namemap_stored(methdata->libctx);
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const char *names = methdata->names;
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const char *q = strchr(names, NAME_SEPARATOR);
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size_t l = (q == NULL ? strlen(names) : (size_t)(q - names));
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if (namemap == 0)
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return NULL;
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id = ossl_namemap_name2num_n(namemap, names, l);
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}
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if (id == 0)
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return NULL;
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if (store == NULL
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&& (store = get_decoder_store(methdata->libctx)) == NULL)
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return NULL;
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if (!ossl_method_store_fetch(store, id, methdata->propquery, prov, &method))
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return NULL;
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return method;
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}
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static int put_decoder_in_store(void *store, void *method,
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const OSSL_PROVIDER *prov,
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const char *names, const char *propdef,
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void *data)
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{
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struct decoder_data_st *methdata = data;
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OSSL_NAMEMAP *namemap;
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int id;
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size_t l = 0;
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/*
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* put_decoder_in_store() is only called with an OSSL_DECODER method that
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* was successfully created by construct_decoder() below, which means that
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* all the names should already be stored in the namemap with the same
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* numeric identity, so just use the first to get that identity.
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*/
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if (names != NULL) {
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const char *q = strchr(names, NAME_SEPARATOR);
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l = (q == NULL ? strlen(names) : (size_t)(q - names));
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}
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if ((namemap = ossl_namemap_stored(methdata->libctx)) == NULL
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|| (id = ossl_namemap_name2num_n(namemap, names, l)) == 0)
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return 0;
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if (store == NULL && (store = get_decoder_store(methdata->libctx)) == NULL)
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return 0;
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return ossl_method_store_add(store, prov, id, propdef, method,
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(int (*)(void *))OSSL_DECODER_up_ref,
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(void (*)(void *))OSSL_DECODER_free);
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}
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/* Create and populate a decoder method */
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void *ossl_decoder_from_algorithm(int id, const OSSL_ALGORITHM *algodef,
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OSSL_PROVIDER *prov)
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{
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OSSL_DECODER *decoder = NULL;
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const OSSL_DISPATCH *fns = algodef->implementation;
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OSSL_LIB_CTX *libctx = ossl_provider_libctx(prov);
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if ((decoder = ossl_decoder_new()) == NULL)
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return NULL;
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decoder->base.id = id;
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if ((decoder->base.name = ossl_algorithm_get1_first_name(algodef)) == NULL) {
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OSSL_DECODER_free(decoder);
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return NULL;
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}
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decoder->base.algodef = algodef;
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if ((decoder->base.parsed_propdef
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= ossl_parse_property(libctx, algodef->property_definition)) == NULL) {
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OSSL_DECODER_free(decoder);
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return NULL;
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}
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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_DECODER_NEWCTX:
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if (decoder->newctx == NULL)
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decoder->newctx = OSSL_FUNC_decoder_newctx(fns);
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break;
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case OSSL_FUNC_DECODER_FREECTX:
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if (decoder->freectx == NULL)
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decoder->freectx = OSSL_FUNC_decoder_freectx(fns);
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break;
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case OSSL_FUNC_DECODER_GET_PARAMS:
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if (decoder->get_params == NULL)
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decoder->get_params =
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OSSL_FUNC_decoder_get_params(fns);
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break;
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case OSSL_FUNC_DECODER_GETTABLE_PARAMS:
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if (decoder->gettable_params == NULL)
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decoder->gettable_params =
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OSSL_FUNC_decoder_gettable_params(fns);
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break;
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case OSSL_FUNC_DECODER_SET_CTX_PARAMS:
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if (decoder->set_ctx_params == NULL)
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decoder->set_ctx_params =
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OSSL_FUNC_decoder_set_ctx_params(fns);
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break;
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case OSSL_FUNC_DECODER_SETTABLE_CTX_PARAMS:
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if (decoder->settable_ctx_params == NULL)
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decoder->settable_ctx_params =
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OSSL_FUNC_decoder_settable_ctx_params(fns);
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break;
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case OSSL_FUNC_DECODER_DOES_SELECTION:
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if (decoder->does_selection == NULL)
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decoder->does_selection =
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OSSL_FUNC_decoder_does_selection(fns);
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break;
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case OSSL_FUNC_DECODER_DECODE:
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if (decoder->decode == NULL)
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decoder->decode = OSSL_FUNC_decoder_decode(fns);
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break;
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case OSSL_FUNC_DECODER_EXPORT_OBJECT:
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if (decoder->export_object == NULL)
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decoder->export_object = OSSL_FUNC_decoder_export_object(fns);
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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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* If you have a constructor, you must have a destructor and vice versa.
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* You must have at least one of the encoding driver functions.
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*/
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if (!((decoder->newctx == NULL && decoder->freectx == NULL)
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|| (decoder->newctx != NULL && decoder->freectx != NULL))
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|| decoder->decode == NULL) {
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OSSL_DECODER_free(decoder);
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ERR_raise(ERR_LIB_OSSL_DECODER, ERR_R_INVALID_PROVIDER_FUNCTIONS);
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return NULL;
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}
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if (prov != NULL && !ossl_provider_up_ref(prov)) {
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OSSL_DECODER_free(decoder);
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return NULL;
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}
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decoder->base.prov = prov;
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return decoder;
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}
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/*
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* The core fetching functionality passes the names of the implementation.
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* This function is responsible to getting an identity number for them,
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* then call ossl_decoder_from_algorithm() with that identity number.
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*/
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static void *construct_decoder(const OSSL_ALGORITHM *algodef,
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OSSL_PROVIDER *prov, void *data)
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{
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/*
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* This function is only called if get_decoder_from_store() returned
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* NULL, so it's safe to say that of all the spots to create a new
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* namemap entry, this is it. Should the name already exist there, we
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* know that ossl_namemap_add() will return its corresponding number.
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*/
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struct decoder_data_st *methdata = data;
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OSSL_LIB_CTX *libctx = ossl_provider_libctx(prov);
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OSSL_NAMEMAP *namemap = ossl_namemap_stored(libctx);
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const char *names = algodef->algorithm_names;
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int id = ossl_namemap_add_names(namemap, 0, names, NAME_SEPARATOR);
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void *method = NULL;
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if (id != 0)
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method = ossl_decoder_from_algorithm(id, algodef, prov);
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/*
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* Flag to indicate that there was actual construction errors. This
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* helps inner_evp_generic_fetch() determine what error it should
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* record on inaccessible algorithms.
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*/
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if (method == NULL)
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methdata->flag_construct_error_occurred = 1;
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return method;
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}
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/* Intermediary function to avoid ugly casts, used below */
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static void destruct_decoder(void *method, void *data)
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{
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OSSL_DECODER_free(method);
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}
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static int up_ref_decoder(void *method)
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{
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return OSSL_DECODER_up_ref(method);
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}
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static void free_decoder(void *method)
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{
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OSSL_DECODER_free(method);
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}
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/* Fetching support. Can fetch by numeric identity or by name */
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static OSSL_DECODER *
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inner_ossl_decoder_fetch(struct decoder_data_st *methdata,
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const char *name, const char *properties)
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{
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OSSL_METHOD_STORE *store = get_decoder_store(methdata->libctx);
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OSSL_NAMEMAP *namemap = ossl_namemap_stored(methdata->libctx);
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const char *const propq = properties != NULL ? properties : "";
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void *method = NULL;
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int unsupported, id;
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if (store == NULL || namemap == NULL) {
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ERR_raise(ERR_LIB_OSSL_DECODER, ERR_R_PASSED_INVALID_ARGUMENT);
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return NULL;
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}
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id = name != NULL ? ossl_namemap_name2num(namemap, name) : 0;
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/*
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* If we haven't found the name yet, chances are that the algorithm to
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* be fetched is unsupported.
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*/
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unsupported = id == 0;
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if (id == 0
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|| !ossl_method_store_cache_get(store, NULL, id, propq, &method)) {
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OSSL_METHOD_CONSTRUCT_METHOD mcm = {
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get_tmp_decoder_store,
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reserve_decoder_store,
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unreserve_decoder_store,
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get_decoder_from_store,
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put_decoder_in_store,
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construct_decoder,
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destruct_decoder
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};
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OSSL_PROVIDER *prov = NULL;
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methdata->id = id;
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methdata->names = name;
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methdata->propquery = propq;
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methdata->flag_construct_error_occurred = 0;
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if ((method = ossl_method_construct(methdata->libctx, OSSL_OP_DECODER,
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&prov, 0 /* !force_cache */,
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&mcm, methdata)) != NULL) {
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/*
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* If construction did create a method for us, we know that
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* there is a correct name_id and meth_id, since those have
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* already been calculated in get_decoder_from_store() and
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* put_decoder_in_store() above.
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*/
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if (id == 0 && name != NULL)
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id = ossl_namemap_name2num(namemap, name);
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if (id != 0)
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ossl_method_store_cache_set(store, prov, id, propq, method,
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up_ref_decoder, free_decoder);
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}
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/*
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* If we never were in the constructor, the algorithm to be fetched
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* is unsupported.
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*/
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unsupported = !methdata->flag_construct_error_occurred;
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}
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if ((id != 0 || name != NULL) && method == NULL) {
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int code = unsupported ? ERR_R_UNSUPPORTED : ERR_R_FETCH_FAILED;
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if (name == NULL)
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name = ossl_namemap_num2name(namemap, id, 0);
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ERR_raise_data(ERR_LIB_OSSL_DECODER, code,
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"%s, Name (%s : %d), Properties (%s)",
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ossl_lib_ctx_get_descriptor(methdata->libctx),
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name == NULL ? "<null>" : name, id,
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properties == NULL ? "<null>" : properties);
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}
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return method;
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}
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OSSL_DECODER *OSSL_DECODER_fetch(OSSL_LIB_CTX *libctx, const char *name,
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const char *properties)
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{
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struct decoder_data_st methdata;
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void *method;
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methdata.libctx = libctx;
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methdata.tmp_store = NULL;
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method = inner_ossl_decoder_fetch(&methdata, name, properties);
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dealloc_tmp_decoder_store(methdata.tmp_store);
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return method;
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}
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int ossl_decoder_store_cache_flush(OSSL_LIB_CTX *libctx)
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{
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OSSL_METHOD_STORE *store = get_decoder_store(libctx);
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if (store != NULL)
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return ossl_method_store_cache_flush_all(store);
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return 1;
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}
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int ossl_decoder_store_remove_all_provided(const OSSL_PROVIDER *prov)
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{
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OSSL_LIB_CTX *libctx = ossl_provider_libctx(prov);
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OSSL_METHOD_STORE *store = get_decoder_store(libctx);
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if (store != NULL)
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return ossl_method_store_remove_all_provided(store, prov);
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return 1;
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}
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/*
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* Library of basic method functions
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*/
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const OSSL_PROVIDER *OSSL_DECODER_get0_provider(const OSSL_DECODER *decoder)
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{
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if (!ossl_assert(decoder != NULL)) {
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ERR_raise(ERR_LIB_OSSL_DECODER, ERR_R_PASSED_NULL_PARAMETER);
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return 0;
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}
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return decoder->base.prov;
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}
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const char *OSSL_DECODER_get0_properties(const OSSL_DECODER *decoder)
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{
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if (!ossl_assert(decoder != NULL)) {
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ERR_raise(ERR_LIB_OSSL_DECODER, ERR_R_PASSED_NULL_PARAMETER);
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return 0;
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}
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return decoder->base.algodef->property_definition;
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}
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const OSSL_PROPERTY_LIST *
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ossl_decoder_parsed_properties(const OSSL_DECODER *decoder)
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{
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if (!ossl_assert(decoder != NULL)) {
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ERR_raise(ERR_LIB_OSSL_DECODER, ERR_R_PASSED_NULL_PARAMETER);
|
|
return 0;
|
|
}
|
|
|
|
return decoder->base.parsed_propdef;
|
|
}
|
|
|
|
int ossl_decoder_get_number(const OSSL_DECODER *decoder)
|
|
{
|
|
if (!ossl_assert(decoder != NULL)) {
|
|
ERR_raise(ERR_LIB_OSSL_DECODER, ERR_R_PASSED_NULL_PARAMETER);
|
|
return 0;
|
|
}
|
|
|
|
return decoder->base.id;
|
|
}
|
|
|
|
const char *OSSL_DECODER_get0_name(const OSSL_DECODER *decoder)
|
|
{
|
|
return decoder->base.name;
|
|
}
|
|
|
|
const char *OSSL_DECODER_get0_description(const OSSL_DECODER *decoder)
|
|
{
|
|
return decoder->base.algodef->algorithm_description;
|
|
}
|
|
|
|
int OSSL_DECODER_is_a(const OSSL_DECODER *decoder, const char *name)
|
|
{
|
|
if (decoder->base.prov != NULL) {
|
|
OSSL_LIB_CTX *libctx = ossl_provider_libctx(decoder->base.prov);
|
|
OSSL_NAMEMAP *namemap = ossl_namemap_stored(libctx);
|
|
|
|
return ossl_namemap_name2num(namemap, name) == decoder->base.id;
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
static int resolve_name(OSSL_DECODER *decoder, const char *name)
|
|
{
|
|
OSSL_LIB_CTX *libctx = ossl_provider_libctx(decoder->base.prov);
|
|
OSSL_NAMEMAP *namemap = ossl_namemap_stored(libctx);
|
|
|
|
return ossl_namemap_name2num(namemap, name);
|
|
}
|
|
|
|
int ossl_decoder_fast_is_a(OSSL_DECODER *decoder, const char *name, int *id_cache)
|
|
{
|
|
int id = *id_cache;
|
|
|
|
if (id <= 0)
|
|
*id_cache = id = resolve_name(decoder, name);
|
|
|
|
return id > 0 && ossl_decoder_get_number(decoder) == id;
|
|
}
|
|
|
|
struct do_one_data_st {
|
|
void (*user_fn)(OSSL_DECODER *decoder, void *arg);
|
|
void *user_arg;
|
|
};
|
|
|
|
static void do_one(ossl_unused int id, void *method, void *arg)
|
|
{
|
|
struct do_one_data_st *data = arg;
|
|
|
|
data->user_fn(method, data->user_arg);
|
|
}
|
|
|
|
void OSSL_DECODER_do_all_provided(OSSL_LIB_CTX *libctx,
|
|
void (*user_fn)(OSSL_DECODER *decoder,
|
|
void *arg),
|
|
void *user_arg)
|
|
{
|
|
struct decoder_data_st methdata;
|
|
struct do_one_data_st data;
|
|
|
|
methdata.libctx = libctx;
|
|
methdata.tmp_store = NULL;
|
|
(void)inner_ossl_decoder_fetch(&methdata, NULL, NULL /* properties */);
|
|
|
|
data.user_fn = user_fn;
|
|
data.user_arg = user_arg;
|
|
if (methdata.tmp_store != NULL)
|
|
ossl_method_store_do_all(methdata.tmp_store, &do_one, &data);
|
|
ossl_method_store_do_all(get_decoder_store(libctx), &do_one, &data);
|
|
dealloc_tmp_decoder_store(methdata.tmp_store);
|
|
}
|
|
|
|
int OSSL_DECODER_names_do_all(const OSSL_DECODER *decoder,
|
|
void (*fn)(const char *name, void *data),
|
|
void *data)
|
|
{
|
|
if (decoder == NULL)
|
|
return 0;
|
|
|
|
if (decoder->base.prov != NULL) {
|
|
OSSL_LIB_CTX *libctx = ossl_provider_libctx(decoder->base.prov);
|
|
OSSL_NAMEMAP *namemap = ossl_namemap_stored(libctx);
|
|
|
|
return ossl_namemap_doall_names(namemap, decoder->base.id, fn, data);
|
|
}
|
|
|
|
return 1;
|
|
}
|
|
|
|
const OSSL_PARAM *
|
|
OSSL_DECODER_gettable_params(OSSL_DECODER *decoder)
|
|
{
|
|
if (decoder != NULL && decoder->gettable_params != NULL) {
|
|
void *provctx = ossl_provider_ctx(OSSL_DECODER_get0_provider(decoder));
|
|
|
|
return decoder->gettable_params(provctx);
|
|
}
|
|
return NULL;
|
|
}
|
|
|
|
int OSSL_DECODER_get_params(OSSL_DECODER *decoder, OSSL_PARAM params[])
|
|
{
|
|
if (decoder != NULL && decoder->get_params != NULL)
|
|
return decoder->get_params(params);
|
|
return 0;
|
|
}
|
|
|
|
const OSSL_PARAM *
|
|
OSSL_DECODER_settable_ctx_params(OSSL_DECODER *decoder)
|
|
{
|
|
if (decoder != NULL && decoder->settable_ctx_params != NULL) {
|
|
void *provctx = ossl_provider_ctx(OSSL_DECODER_get0_provider(decoder));
|
|
|
|
return decoder->settable_ctx_params(provctx);
|
|
}
|
|
return NULL;
|
|
}
|
|
|
|
/*
|
|
* Decoder context support
|
|
*/
|
|
|
|
/*
|
|
* |encoder| value NULL is valid, and signifies that there is no decoder.
|
|
* This is useful to provide fallback mechanisms.
|
|
* Functions that want to verify if there is a decoder can do so with
|
|
* OSSL_DECODER_CTX_get_decoder()
|
|
*/
|
|
OSSL_DECODER_CTX *OSSL_DECODER_CTX_new(void)
|
|
{
|
|
OSSL_DECODER_CTX *ctx;
|
|
|
|
ctx = OPENSSL_zalloc(sizeof(*ctx));
|
|
return ctx;
|
|
}
|
|
|
|
int OSSL_DECODER_CTX_set_params(OSSL_DECODER_CTX *ctx,
|
|
const OSSL_PARAM params[])
|
|
{
|
|
int ok = 1;
|
|
size_t i;
|
|
size_t l;
|
|
|
|
if (!ossl_assert(ctx != NULL)) {
|
|
ERR_raise(ERR_LIB_OSSL_DECODER, ERR_R_PASSED_NULL_PARAMETER);
|
|
return 0;
|
|
}
|
|
|
|
if (ctx->decoder_insts == NULL)
|
|
return 1;
|
|
|
|
l = OSSL_DECODER_CTX_get_num_decoders(ctx);
|
|
for (i = 0; i < l; i++) {
|
|
OSSL_DECODER_INSTANCE *decoder_inst =
|
|
sk_OSSL_DECODER_INSTANCE_value(ctx->decoder_insts, i);
|
|
OSSL_DECODER *decoder =
|
|
OSSL_DECODER_INSTANCE_get_decoder(decoder_inst);
|
|
OSSL_DECODER *decoderctx =
|
|
OSSL_DECODER_INSTANCE_get_decoder_ctx(decoder_inst);
|
|
|
|
if (decoderctx == NULL || decoder->set_ctx_params == NULL)
|
|
continue;
|
|
if (!decoder->set_ctx_params(decoderctx, params))
|
|
ok = 0;
|
|
}
|
|
return ok;
|
|
}
|
|
|
|
void OSSL_DECODER_CTX_free(OSSL_DECODER_CTX *ctx)
|
|
{
|
|
if (ctx != NULL) {
|
|
if (ctx->cleanup != NULL)
|
|
ctx->cleanup(ctx->construct_data);
|
|
sk_OSSL_DECODER_INSTANCE_pop_free(ctx->decoder_insts,
|
|
ossl_decoder_instance_free);
|
|
ossl_pw_clear_passphrase_data(&ctx->pwdata);
|
|
OPENSSL_free(ctx);
|
|
}
|
|
}
|