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dfc0857d P |
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 | #include <string.h> | |
11 | #include <stdio.h> | |
12 | #include <openssl/opensslconf.h> | |
13 | #include <openssl/core.h> | |
14 | #include <openssl/core_dispatch.h> | |
15 | #include <openssl/core_names.h> | |
16 | #include <openssl/params.h> | |
17 | #include "prov/bio.h" | |
18 | #include "prov/provider_ctx.h" | |
19 | #include "prov/providercommon.h" | |
20 | #include "prov/implementations.h" | |
21 | #include "prov/provider_util.h" | |
22 | #include "internal/nelem.h" | |
23 | ||
24 | /* | |
25 | * Forward declarations to ensure that interface functions are correctly | |
26 | * defined. | |
27 | */ | |
28 | static OSSL_FUNC_provider_gettable_params_fn base_gettable_params; | |
29 | static OSSL_FUNC_provider_get_params_fn base_get_params; | |
30 | static OSSL_FUNC_provider_query_operation_fn base_query; | |
31 | ||
32 | /* Functions provided by the core */ | |
33 | static OSSL_FUNC_core_gettable_params_fn *c_gettable_params = NULL; | |
34 | static OSSL_FUNC_core_get_params_fn *c_get_params = NULL; | |
35 | ||
36 | /* Parameters we provide to the core */ | |
37 | static const OSSL_PARAM base_param_types[] = { | |
38 | OSSL_PARAM_DEFN(OSSL_PROV_PARAM_NAME, OSSL_PARAM_UTF8_PTR, NULL, 0), | |
39 | OSSL_PARAM_DEFN(OSSL_PROV_PARAM_VERSION, OSSL_PARAM_UTF8_PTR, NULL, 0), | |
40 | OSSL_PARAM_DEFN(OSSL_PROV_PARAM_BUILDINFO, OSSL_PARAM_UTF8_PTR, NULL, 0), | |
41 | OSSL_PARAM_END | |
42 | }; | |
43 | ||
44 | static const OSSL_PARAM *base_gettable_params(void *provctx) | |
45 | { | |
46 | return base_param_types; | |
47 | } | |
48 | ||
49 | static int base_get_params(void *provctx, OSSL_PARAM params[]) | |
50 | { | |
51 | OSSL_PARAM *p; | |
52 | ||
53 | p = OSSL_PARAM_locate(params, OSSL_PROV_PARAM_NAME); | |
54 | if (p != NULL | |
55 | && !OSSL_PARAM_set_utf8_ptr(p, "OpenSSL Base Provider")) | |
56 | return 0; | |
57 | p = OSSL_PARAM_locate(params, OSSL_PROV_PARAM_VERSION); | |
58 | if (p != NULL && !OSSL_PARAM_set_utf8_ptr(p, OPENSSL_VERSION_STR)) | |
59 | return 0; | |
60 | p = OSSL_PARAM_locate(params, OSSL_PROV_PARAM_BUILDINFO); | |
61 | if (p != NULL && !OSSL_PARAM_set_utf8_ptr(p, OPENSSL_FULL_VERSION_STR)) | |
62 | return 0; | |
63 | ||
64 | return 1; | |
65 | } | |
66 | ||
ece9304c RL |
67 | static const OSSL_ALGORITHM base_encoder[] = { |
68 | #define ENCODER(name, fips, format, type, func_table) \ | |
dfc0857d P |
69 | { name, \ |
70 | "provider=base,fips=" fips ",format=" format ",type=" type, \ | |
71 | (func_table) } | |
72 | ||
ece9304c | 73 | #include "encoders.inc" |
dfc0857d P |
74 | { NULL, NULL, NULL } |
75 | }; | |
ece9304c | 76 | #undef ENCODER |
dfc0857d | 77 | |
ece9304c RL |
78 | static const OSSL_ALGORITHM base_decoder[] = { |
79 | #define DECODER(name, fips, input, func_table) \ | |
a3f15e23 P |
80 | { name, \ |
81 | "provider=base,fips=" fips ",input=" input, \ | |
82 | (func_table) } | |
83 | ||
ece9304c | 84 | #include "decoders.inc" |
a3f15e23 P |
85 | { NULL, NULL, NULL } |
86 | }; | |
ece9304c | 87 | #undef DECODER |
a3f15e23 | 88 | |
dfc0857d P |
89 | static const OSSL_ALGORITHM *base_query(void *provctx, int operation_id, |
90 | int *no_cache) | |
91 | { | |
92 | *no_cache = 0; | |
a3f15e23 | 93 | switch (operation_id) { |
ece9304c RL |
94 | case OSSL_OP_ENCODER: |
95 | return base_encoder; | |
96 | case OSSL_OP_DECODER: | |
97 | return base_decoder; | |
a3f15e23 P |
98 | } |
99 | return NULL; | |
dfc0857d P |
100 | } |
101 | ||
102 | static void base_teardown(void *provctx) | |
103 | { | |
104 | BIO_meth_free(PROV_CTX_get0_core_bio_method(provctx)); | |
105 | PROV_CTX_free(provctx); | |
106 | } | |
107 | ||
108 | /* Functions we provide to the core */ | |
109 | static const OSSL_DISPATCH base_dispatch_table[] = { | |
110 | { OSSL_FUNC_PROVIDER_TEARDOWN, (void (*)(void))base_teardown }, | |
111 | { OSSL_FUNC_PROVIDER_GETTABLE_PARAMS, | |
112 | (void (*)(void))base_gettable_params }, | |
113 | { OSSL_FUNC_PROVIDER_GET_PARAMS, (void (*)(void))base_get_params }, | |
114 | { OSSL_FUNC_PROVIDER_QUERY_OPERATION, (void (*)(void))base_query }, | |
115 | { 0, NULL } | |
116 | }; | |
117 | ||
118 | OSSL_provider_init_fn ossl_base_provider_init; | |
119 | ||
120 | int ossl_base_provider_init(const OSSL_CORE_HANDLE *handle, | |
121 | const OSSL_DISPATCH *in, const OSSL_DISPATCH **out, | |
122 | void **provctx) | |
123 | { | |
124 | OSSL_FUNC_core_get_library_context_fn *c_get_libctx = NULL; | |
125 | BIO_METHOD *corebiometh; | |
126 | ||
127 | if (!ossl_prov_bio_from_dispatch(in)) | |
128 | return 0; | |
129 | for (; in->function_id != 0; in++) { | |
130 | switch (in->function_id) { | |
131 | case OSSL_FUNC_CORE_GETTABLE_PARAMS: | |
132 | c_gettable_params = OSSL_FUNC_core_gettable_params(in); | |
133 | break; | |
134 | case OSSL_FUNC_CORE_GET_PARAMS: | |
135 | c_get_params = OSSL_FUNC_core_get_params(in); | |
136 | break; | |
137 | case OSSL_FUNC_CORE_GET_LIBRARY_CONTEXT: | |
138 | c_get_libctx = OSSL_FUNC_core_get_library_context(in); | |
139 | break; | |
140 | default: | |
141 | /* Just ignore anything we don't understand */ | |
142 | break; | |
143 | } | |
144 | } | |
145 | ||
146 | if (c_get_libctx == NULL) | |
147 | return 0; | |
148 | ||
149 | /* | |
150 | * We want to make sure that all calls from this provider that requires | |
151 | * a library context use the same context as the one used to call our | |
152 | * functions. We do that by passing it along in the provider context. | |
153 | * | |
154 | * This only works for built-in providers. Most providers should | |
155 | * create their own library context. | |
156 | */ | |
157 | if ((*provctx = PROV_CTX_new()) == NULL | |
158 | || (corebiometh = bio_prov_init_bio_method()) == NULL) { | |
159 | PROV_CTX_free(*provctx); | |
160 | *provctx = NULL; | |
161 | return 0; | |
162 | } | |
163 | PROV_CTX_set0_library_context(*provctx, (OPENSSL_CTX *)c_get_libctx(handle)); | |
164 | PROV_CTX_set0_handle(*provctx, handle); | |
165 | PROV_CTX_set0_core_bio_method(*provctx, corebiometh); | |
166 | ||
167 | *out = base_dispatch_table; | |
168 | ||
169 | return 1; | |
170 | } |