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1 | /* |
2 | * Copyright 2019-2020 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 | #include <openssl/core_dispatch.h> | |
11 | #include <openssl/types.h> | |
12 | #include <openssl/safestack.h> | |
13 | #include <openssl/encoder.h> | |
14 | #include <openssl/decoder.h> | |
15 | #include "internal/cryptlib.h" | |
a517edec | 16 | #include "internal/passphrase.h" |
ece9304c RL |
17 | #include "internal/refcount.h" |
18 | ||
19 | struct ossl_serdes_base_st { | |
20 | OSSL_PROVIDER *prov; | |
21 | int id; | |
22 | const char *propdef; | |
23 | ||
24 | CRYPTO_REF_COUNT refcnt; | |
25 | CRYPTO_RWLOCK *lock; | |
26 | }; | |
27 | ||
28 | struct ossl_encoder_st { | |
29 | struct ossl_serdes_base_st base; | |
30 | OSSL_FUNC_encoder_newctx_fn *newctx; | |
31 | OSSL_FUNC_encoder_freectx_fn *freectx; | |
32 | OSSL_FUNC_encoder_set_ctx_params_fn *set_ctx_params; | |
33 | OSSL_FUNC_encoder_settable_ctx_params_fn *settable_ctx_params; | |
34 | OSSL_FUNC_encoder_encode_data_fn *encode_data; | |
35 | OSSL_FUNC_encoder_encode_object_fn *encode_object; | |
36 | }; | |
37 | ||
38 | struct ossl_decoder_st { | |
39 | struct ossl_serdes_base_st base; | |
40 | OSSL_FUNC_decoder_newctx_fn *newctx; | |
41 | OSSL_FUNC_decoder_freectx_fn *freectx; | |
42 | OSSL_FUNC_decoder_get_params_fn *get_params; | |
43 | OSSL_FUNC_decoder_gettable_params_fn *gettable_params; | |
44 | OSSL_FUNC_decoder_set_ctx_params_fn *set_ctx_params; | |
45 | OSSL_FUNC_decoder_settable_ctx_params_fn *settable_ctx_params; | |
46 | OSSL_FUNC_decoder_decode_fn *decode; | |
47 | OSSL_FUNC_decoder_export_object_fn *export_object; | |
48 | }; | |
49 | ||
50 | struct ossl_encoder_ctx_st { | |
51 | OSSL_ENCODER *encoder; | |
52 | void *serctx; | |
53 | ||
54 | int selection; | |
55 | ||
56 | /*- | |
57 | * Output / encoding data, used by OSSL_ENCODER_to_{bio,fp} | |
58 | * | |
59 | * |object| is the libcrypto object to handle. | |
60 | * |do_output| performs the actual encoding. | |
61 | * | |
62 | * |do_output| must have intimate knowledge of |object|. | |
63 | */ | |
64 | const void *object; | |
65 | int (*do_output)(OSSL_ENCODER_CTX *ctx, BIO *out); | |
66 | ||
67 | /* For any function that needs a passphrase reader */ | |
a517edec | 68 | struct ossl_passphrase_data_st pwdata; |
ece9304c RL |
69 | }; |
70 | ||
71 | struct ossl_decoder_instance_st { | |
72 | OSSL_DECODER *decoder; /* Never NULL */ | |
73 | void *deserctx; /* Never NULL */ | |
74 | const char *input_type; /* Never NULL */ | |
75 | }; | |
76 | ||
77 | DEFINE_STACK_OF(OSSL_DECODER_INSTANCE) | |
78 | ||
79 | struct ossl_decoder_ctx_st { | |
80 | /* | |
81 | * The caller may know the input type of the data they pass. If not, | |
82 | * this will remain NULL and the decoding functionality will start | |
83 | * with trying to decode with any desencoder in |decoder_insts|, | |
84 | * regardless of their respective input type. | |
85 | */ | |
86 | const char *start_input_type; | |
87 | ||
88 | /* | |
89 | * Decoders that are components of any current decoding path. | |
90 | */ | |
91 | STACK_OF(OSSL_DECODER_INSTANCE) *decoder_insts; | |
92 | ||
93 | /* | |
94 | * The constructors of a decoding, and its caller argument. | |
95 | */ | |
96 | OSSL_DECODER_CONSTRUCT *construct; | |
97 | OSSL_DECODER_CLEANUP *cleanup; | |
98 | void *construct_data; | |
99 | ||
100 | /* For any function that needs a passphrase reader */ | |
a517edec | 101 | struct ossl_passphrase_data_st pwdata; |
ece9304c | 102 | }; |