include/openssl/decoder.h

   1 /*
   2  * Copyright 2020 The OpenSSL Project Authors. All Rights Reserved.
   3  *
   4  * Licensed under the Apache License 2.0 (the "License").  You may not use
   5  * this file except in compliance with the License.  You can obtain a copy
   6  * in the file LICENSE in the source distribution or at
   7  * https://www.openssl.org/source/license.html
   8  */
   9
  10 #ifndef OPENSSL_DECODER_H
  11 # define OPENSSL_DECODER_H
  12 # pragma once
  13
  14 # include <openssl/opensslconf.h>
  15
  16 # ifndef OPENSSL_NO_STDIO
  17 #  include <stdio.h>
  18 # endif
  19 # include <stdarg.h>
  20 # include <stddef.h>
  21 # include <openssl/decodererr.h>
  22 # include <openssl/types.h>
  23 # include <openssl/core.h>
  24
  25 # ifdef __cplusplus
  26 extern "C" {
  27 # endif
  28
  29 OSSL_DECODER *OSSL_DECODER_fetch(OPENSSL_CTX *libctx, const char *name,
  30                                  const char *properties);
  31 int OSSL_DECODER_up_ref(OSSL_DECODER *encoder);
  32 void OSSL_DECODER_free(OSSL_DECODER *encoder);
  33
  34 const OSSL_PROVIDER *OSSL_DECODER_provider(const OSSL_DECODER *encoder);
  35 const char *OSSL_DECODER_properties(const OSSL_DECODER *encoder);
  36 int OSSL_DECODER_number(const OSSL_DECODER *encoder);
  37 int OSSL_DECODER_is_a(const OSSL_DECODER *encoder, const char *name);
  38
  39 void OSSL_DECODER_do_all_provided(OPENSSL_CTX *libctx,
  40                                   void (*fn)(OSSL_DECODER *encoder, void *arg),
  41                                   void *arg);
  42 void OSSL_DECODER_names_do_all(const OSSL_DECODER *encoder,
  43                                void (*fn)(const char *name, void *data),
  44                                void *data);
  45 const OSSL_PARAM *OSSL_DECODER_gettable_params(OSSL_DECODER *decoder);
  46 int OSSL_DECODER_get_params(OSSL_DECODER *decoder, OSSL_PARAM params[]);
  47
  48 const OSSL_PARAM *OSSL_DECODER_settable_ctx_params(OSSL_DECODER *encoder);
  49 OSSL_DECODER_CTX *OSSL_DECODER_CTX_new(void);
  50 int OSSL_DECODER_CTX_set_params(OSSL_DECODER_CTX *ctx,
  51                                 const OSSL_PARAM params[]);
  52 void OSSL_DECODER_CTX_free(OSSL_DECODER_CTX *ctx);
  53
  54 /* Utilities that help set specific parameters */
  55 int OSSL_DECODER_CTX_set_passphrase(OSSL_DECODER_CTX *ctx,
  56                                     const unsigned char *kstr,
  57                                     size_t klen);
  58 int OSSL_DECODER_CTX_set_pem_password_cb(OSSL_DECODER_CTX *ctx,
  59                                          pem_password_cb *cb,
  60                                          void *cbarg);
  61 int OSSL_DECODER_CTX_set_passphrase_ui(OSSL_DECODER_CTX *ctx,
  62                                        const UI_METHOD *ui_method,
  63                                        void *ui_data);
  64
  65 /*
  66  * Utilities to read the object to decode, with the result sent to cb.
  67  * These will discover all provided methods
  68  */
  69
  70 int OSSL_DECODER_CTX_set_input_type(OSSL_DECODER_CTX *ctx,
  71                                     const char *input_type);
  72 int OSSL_DECODER_CTX_add_decoder(OSSL_DECODER_CTX *ctx, OSSL_DECODER *decoder);
  73 int OSSL_DECODER_CTX_add_extra(OSSL_DECODER_CTX *ctx,
  74                                OPENSSL_CTX *libctx, const char *propq);
  75 int OSSL_DECODER_CTX_num_decoders(OSSL_DECODER_CTX *ctx);
  76
  77 typedef struct ossl_decoder_instance_st OSSL_DECODER_INSTANCE;
  78 OSSL_DECODER *
  79 OSSL_DECODER_INSTANCE_decoder(OSSL_DECODER_INSTANCE *decoder_inst);
  80 void *OSSL_DECODER_INSTANCE_decoder_ctx(OSSL_DECODER_INSTANCE *decoder_inst);
  81
  82 typedef int (OSSL_DECODER_CONSTRUCT)(OSSL_DECODER_INSTANCE *decoder_inst,
  83                                      const OSSL_PARAM *params,
  84                                      void *construct_data);
  85 typedef void (OSSL_DECODER_CLEANUP)(void *construct_data);
  86
  87 int OSSL_DECODER_CTX_set_construct(OSSL_DECODER_CTX *ctx,
  88                                    OSSL_DECODER_CONSTRUCT *construct);
  89 int OSSL_DECODER_CTX_set_construct_data(OSSL_DECODER_CTX *ctx,
  90                                         void *construct_data);
  91 int OSSL_DECODER_CTX_set_cleanup(OSSL_DECODER_CTX *ctx,
  92                                  OSSL_DECODER_CLEANUP *cleanup);
  93 OSSL_DECODER_CONSTRUCT *OSSL_DECODER_CTX_get_construct(OSSL_DECODER_CTX *ctx);
  94 void *OSSL_DECODER_CTX_get_construct_data(OSSL_DECODER_CTX *ctx);
  95 OSSL_DECODER_CLEANUP *OSSL_DECODER_CTX_get_cleanup(OSSL_DECODER_CTX *ctx);
  96
  97 int OSSL_DECODER_export(OSSL_DECODER_INSTANCE *decoder_inst,
  98                         void *reference, size_t reference_sz,
  99                         OSSL_CALLBACK *export_cb, void *export_cbarg);
 100
 101 int OSSL_DECODER_from_bio(OSSL_DECODER_CTX *ctx, BIO *in);
 102 #ifndef OPENSSL_NO_STDIO
 103 int OSSL_DECODER_from_fp(OSSL_DECODER_CTX *ctx, FILE *in);
 104 #endif
 105
 106 /*
 107  * Create the OSSL_DECODER_CTX with an associated type.  This will perform
 108  * an implicit OSSL_DECODER_fetch(), suitable for the object of that type.
 109  */
 110 OSSL_DECODER_CTX *
 111 OSSL_DECODER_CTX_new_by_EVP_PKEY(EVP_PKEY **pkey, const char *input_type,
 112                                  OPENSSL_CTX *libctx, const char *propquery);
 113
 114 # ifdef __cplusplus
 115 }
 116 # endif
 117 #endif