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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" |
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17 | #include "internal/refcount.h" |
18 | ||
bd7a6f16 | 19 | struct ossl_endecode_base_st { |
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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 { | |
bd7a6f16 | 29 | struct ossl_endecode_base_st base; |
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30 | OSSL_FUNC_encoder_newctx_fn *newctx; |
31 | OSSL_FUNC_encoder_freectx_fn *freectx; | |
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32 | OSSL_FUNC_encoder_get_params_fn *get_params; |
33 | OSSL_FUNC_encoder_gettable_params_fn *gettable_params; | |
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34 | OSSL_FUNC_encoder_set_ctx_params_fn *set_ctx_params; |
35 | OSSL_FUNC_encoder_settable_ctx_params_fn *settable_ctx_params; | |
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36 | OSSL_FUNC_encoder_encode_fn *encode; |
37 | OSSL_FUNC_encoder_import_object_fn *import_object; | |
38 | OSSL_FUNC_encoder_free_object_fn *free_object; | |
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39 | }; |
40 | ||
41 | struct ossl_decoder_st { | |
bd7a6f16 | 42 | struct ossl_endecode_base_st base; |
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43 | OSSL_FUNC_decoder_newctx_fn *newctx; |
44 | OSSL_FUNC_decoder_freectx_fn *freectx; | |
45 | OSSL_FUNC_decoder_get_params_fn *get_params; | |
46 | OSSL_FUNC_decoder_gettable_params_fn *gettable_params; | |
47 | OSSL_FUNC_decoder_set_ctx_params_fn *set_ctx_params; | |
48 | OSSL_FUNC_decoder_settable_ctx_params_fn *settable_ctx_params; | |
49 | OSSL_FUNC_decoder_decode_fn *decode; | |
50 | OSSL_FUNC_decoder_export_object_fn *export_object; | |
51 | }; | |
52 | ||
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53 | struct ossl_encoder_instance_st { |
54 | OSSL_ENCODER *encoder; /* Never NULL */ | |
55 | void *encoderctx; /* Never NULL */ | |
56 | const char *input_type; /* May be NULL */ | |
57 | const char *output_type; /* Never NULL */ | |
58 | }; | |
59 | ||
60 | DEFINE_STACK_OF(OSSL_ENCODER_INSTANCE) | |
ece9304c | 61 | |
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62 | void ossl_encoder_instance_free(OSSL_ENCODER_INSTANCE *encoder_inst); |
63 | ||
64 | struct ossl_encoder_ctx_st { | |
65 | /* | |
66 | * The desired output type. The encoder implementation have a gettable | |
67 | * "output-type" parameter that this will match against. | |
68 | */ | |
69 | const char *output_type; | |
70 | /* | |
71 | * Select what parts of an object will be encoded. This selection is | |
72 | * bit encoded, and the bits correspond to selection bits available with | |
73 | * the provider side operation. For example, when encoding an EVP_PKEY, | |
74 | * the OSSL_KEYMGMT_SELECT_ macros are used for this. | |
75 | */ | |
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76 | int selection; |
77 | ||
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78 | /* |
79 | * Decoders that are components of any current decoding path. | |
80 | */ | |
81 | STACK_OF(OSSL_ENCODER_INSTANCE) *encoder_insts; | |
82 | ||
83 | /* | |
84 | * The constructor and destructor of an object to pass to the first | |
85 | * encoder in a chain. | |
ece9304c | 86 | */ |
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87 | OSSL_ENCODER_CONSTRUCT *construct; |
88 | OSSL_ENCODER_CLEANUP *cleanup; | |
89 | void *construct_data; | |
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90 | |
91 | /* For any function that needs a passphrase reader */ | |
a517edec | 92 | struct ossl_passphrase_data_st pwdata; |
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93 | }; |
94 | ||
95 | struct ossl_decoder_instance_st { | |
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96 | OSSL_DECODER *decoder; /* Never NULL */ |
97 | void *decoderctx; /* Never NULL */ | |
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98 | const char *input_type; /* Never NULL */ |
99 | }; | |
100 | ||
101 | DEFINE_STACK_OF(OSSL_DECODER_INSTANCE) | |
102 | ||
103 | struct ossl_decoder_ctx_st { | |
104 | /* | |
105 | * The caller may know the input type of the data they pass. If not, | |
106 | * this will remain NULL and the decoding functionality will start | |
107 | * with trying to decode with any desencoder in |decoder_insts|, | |
108 | * regardless of their respective input type. | |
109 | */ | |
110 | const char *start_input_type; | |
111 | ||
112 | /* | |
113 | * Decoders that are components of any current decoding path. | |
114 | */ | |
115 | STACK_OF(OSSL_DECODER_INSTANCE) *decoder_insts; | |
116 | ||
117 | /* | |
118 | * The constructors of a decoding, and its caller argument. | |
119 | */ | |
120 | OSSL_DECODER_CONSTRUCT *construct; | |
121 | OSSL_DECODER_CLEANUP *cleanup; | |
122 | void *construct_data; | |
123 | ||
124 | /* For any function that needs a passphrase reader */ | |
a517edec | 125 | struct ossl_passphrase_data_st pwdata; |
ece9304c | 126 | }; |