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ece9304c96
Fixes #12455 Reviewed-by: Paul Dale <paul.dale@oracle.com> (Merged from https://github.com/openssl/openssl/pull/12660)
141 lines
4.2 KiB
C
141 lines
4.2 KiB
C
/*
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* Copyright 2019-2020 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_dispatch.h>
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#include <openssl/types.h>
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#include <openssl/safestack.h>
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#include <openssl/encoder.h>
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#include <openssl/decoder.h>
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#include "internal/cryptlib.h"
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#include "internal/refcount.h"
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struct ossl_serdes_base_st {
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OSSL_PROVIDER *prov;
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int id;
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const char *propdef;
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CRYPTO_REF_COUNT refcnt;
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CRYPTO_RWLOCK *lock;
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};
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struct ossl_encoder_st {
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struct ossl_serdes_base_st base;
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OSSL_FUNC_encoder_newctx_fn *newctx;
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OSSL_FUNC_encoder_freectx_fn *freectx;
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OSSL_FUNC_encoder_set_ctx_params_fn *set_ctx_params;
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OSSL_FUNC_encoder_settable_ctx_params_fn *settable_ctx_params;
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OSSL_FUNC_encoder_encode_data_fn *encode_data;
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OSSL_FUNC_encoder_encode_object_fn *encode_object;
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};
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struct ossl_decoder_st {
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struct ossl_serdes_base_st base;
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OSSL_FUNC_decoder_newctx_fn *newctx;
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OSSL_FUNC_decoder_freectx_fn *freectx;
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OSSL_FUNC_decoder_get_params_fn *get_params;
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OSSL_FUNC_decoder_gettable_params_fn *gettable_params;
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OSSL_FUNC_decoder_set_ctx_params_fn *set_ctx_params;
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OSSL_FUNC_decoder_settable_ctx_params_fn *settable_ctx_params;
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OSSL_FUNC_decoder_decode_fn *decode;
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OSSL_FUNC_decoder_export_object_fn *export_object;
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};
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struct ossl_encoder_ctx_st {
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OSSL_ENCODER *encoder;
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void *serctx;
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int selection;
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/*-
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* Output / encoding data, used by OSSL_ENCODER_to_{bio,fp}
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*
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* |object| is the libcrypto object to handle.
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* |do_output| performs the actual encoding.
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*
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* |do_output| must have intimate knowledge of |object|.
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*/
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const void *object;
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int (*do_output)(OSSL_ENCODER_CTX *ctx, BIO *out);
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/* For any function that needs a passphrase reader */
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const UI_METHOD *ui_method;
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void *ui_data;
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/*
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* if caller used OSSL_ENCODER_CTX_set_passphrase_cb(), we need
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* intermediary storage.
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*/
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UI_METHOD *allocated_ui_method;
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};
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struct ossl_decoder_instance_st {
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OSSL_DECODER *decoder; /* Never NULL */
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void *deserctx; /* Never NULL */
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const char *input_type; /* Never NULL */
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};
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DEFINE_STACK_OF(OSSL_DECODER_INSTANCE)
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struct ossl_decoder_ctx_st {
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/*
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* The caller may know the input type of the data they pass. If not,
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* this will remain NULL and the decoding functionality will start
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* with trying to decode with any desencoder in |decoder_insts|,
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* regardless of their respective input type.
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*/
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const char *start_input_type;
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/*
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* Decoders that are components of any current decoding path.
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*/
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STACK_OF(OSSL_DECODER_INSTANCE) *decoder_insts;
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/*
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* The constructors of a decoding, and its caller argument.
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*/
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OSSL_DECODER_CONSTRUCT *construct;
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OSSL_DECODER_CLEANUP *cleanup;
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void *construct_data;
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/* For any function that needs a passphrase reader */
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OSSL_PASSPHRASE_CALLBACK *passphrase_cb;
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const UI_METHOD *ui_method;
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void *ui_data;
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/*
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* if caller used OSSL_ENCODER_CTX_set_pem_password_cb(), we need
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* intermediary storage.
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*/
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UI_METHOD *allocated_ui_method;
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/*
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* Because the same input may pass through more than one decoder,
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* we cache any passphrase passed to us. The desrializing processor
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* must clear this at the end of a run.
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*/
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unsigned char *cached_passphrase;
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size_t cached_passphrase_len;
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/*
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* Flag section. Keep these together
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*/
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/*
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* The passphrase was passed to us by the user. In that case, it
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* should only be freed when freeing this context.
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*/
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unsigned int flag_user_passphrase:1;
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};
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/* Passphrase callbacks, found in serdes_pass.c */
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/*
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* Encoders typically want to get an outgoing passphrase, while
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* decoders typically want to get en incoming passphrase.
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*/
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OSSL_PASSPHRASE_CALLBACK ossl_encoder_passphrase_out_cb;
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OSSL_PASSPHRASE_CALLBACK ossl_decoder_passphrase_in_cb;
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