QUIC DEMUX: (Server support) Add support for default handler
[openssl.git] / providers / baseprov.c
1 /*
2  * Copyright 2020-2021 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
23 /*
24  * Forward declarations to ensure that interface functions are correctly
25  * defined.
26  */
27 static OSSL_FUNC_provider_gettable_params_fn base_gettable_params;
28 static OSSL_FUNC_provider_get_params_fn base_get_params;
29 static OSSL_FUNC_provider_query_operation_fn base_query;
30
31 /* Functions provided by the core */
32 static OSSL_FUNC_core_gettable_params_fn *c_gettable_params = NULL;
33 static OSSL_FUNC_core_get_params_fn *c_get_params = NULL;
34
35 /* Parameters we provide to the core */
36 static const OSSL_PARAM base_param_types[] = {
37     OSSL_PARAM_DEFN(OSSL_PROV_PARAM_NAME, OSSL_PARAM_UTF8_PTR, NULL, 0),
38     OSSL_PARAM_DEFN(OSSL_PROV_PARAM_VERSION, OSSL_PARAM_UTF8_PTR, NULL, 0),
39     OSSL_PARAM_DEFN(OSSL_PROV_PARAM_BUILDINFO, OSSL_PARAM_UTF8_PTR, NULL, 0),
40     OSSL_PARAM_DEFN(OSSL_PROV_PARAM_STATUS, OSSL_PARAM_INTEGER, 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     p = OSSL_PARAM_locate(params, OSSL_PROV_PARAM_STATUS);
64     if (p != NULL && !OSSL_PARAM_set_int(p, ossl_prov_is_running()))
65         return 0;
66
67     return 1;
68 }
69
70 static const OSSL_ALGORITHM base_encoder[] = {
71 #define ENCODER_PROVIDER "base"
72 #include "encoders.inc"
73     { NULL, NULL, NULL }
74 #undef ENCODER_PROVIDER
75 };
76
77 static const OSSL_ALGORITHM base_decoder[] = {
78 #define DECODER_PROVIDER "base"
79 #include "decoders.inc"
80     { NULL, NULL, NULL }
81 #undef DECODER_PROVIDER
82 };
83
84 static const OSSL_ALGORITHM base_store[] = {
85 #define STORE(name, _fips, func_table)                           \
86     { name, "provider=base,fips=" _fips, (func_table) },
87
88 #include "stores.inc"
89     { NULL, NULL, NULL }
90 #undef STORE
91 };
92
93 static const OSSL_ALGORITHM *base_query(void *provctx, int operation_id,
94                                          int *no_cache)
95 {
96     *no_cache = 0;
97     switch (operation_id) {
98     case OSSL_OP_ENCODER:
99         return base_encoder;
100     case OSSL_OP_DECODER:
101         return base_decoder;
102     case OSSL_OP_STORE:
103         return base_store;
104     }
105     return NULL;
106 }
107
108 static void base_teardown(void *provctx)
109 {
110     BIO_meth_free(ossl_prov_ctx_get0_core_bio_method(provctx));
111     ossl_prov_ctx_free(provctx);
112 }
113
114 /* Functions we provide to the core */
115 static const OSSL_DISPATCH base_dispatch_table[] = {
116     { OSSL_FUNC_PROVIDER_TEARDOWN, (void (*)(void))base_teardown },
117     { OSSL_FUNC_PROVIDER_GETTABLE_PARAMS,
118       (void (*)(void))base_gettable_params },
119     { OSSL_FUNC_PROVIDER_GET_PARAMS, (void (*)(void))base_get_params },
120     { OSSL_FUNC_PROVIDER_QUERY_OPERATION, (void (*)(void))base_query },
121     { 0, NULL }
122 };
123
124 OSSL_provider_init_fn ossl_base_provider_init;
125
126 int ossl_base_provider_init(const OSSL_CORE_HANDLE *handle,
127                             const OSSL_DISPATCH *in, const OSSL_DISPATCH **out,
128                             void **provctx)
129 {
130     OSSL_FUNC_core_get_libctx_fn *c_get_libctx = NULL;
131     BIO_METHOD *corebiometh;
132
133     if (!ossl_prov_bio_from_dispatch(in))
134         return 0;
135     for (; in->function_id != 0; in++) {
136         switch (in->function_id) {
137         case OSSL_FUNC_CORE_GETTABLE_PARAMS:
138             c_gettable_params = OSSL_FUNC_core_gettable_params(in);
139             break;
140         case OSSL_FUNC_CORE_GET_PARAMS:
141             c_get_params = OSSL_FUNC_core_get_params(in);
142             break;
143         case OSSL_FUNC_CORE_GET_LIBCTX:
144             c_get_libctx = OSSL_FUNC_core_get_libctx(in);
145             break;
146         default:
147             /* Just ignore anything we don't understand */
148             break;
149         }
150     }
151
152     if (c_get_libctx == NULL)
153         return 0;
154
155     /*
156      * We want to make sure that all calls from this provider that requires
157      * a library context use the same context as the one used to call our
158      * functions.  We do that by passing it along in the provider context.
159      *
160      * This only works for built-in providers.  Most providers should
161      * create their own library context.
162      */
163     if ((*provctx = ossl_prov_ctx_new()) == NULL
164             || (corebiometh = ossl_bio_prov_init_bio_method()) == NULL) {
165         ossl_prov_ctx_free(*provctx);
166         *provctx = NULL;
167         return 0;
168     }
169     ossl_prov_ctx_set0_libctx(*provctx,
170                                        (OSSL_LIB_CTX *)c_get_libctx(handle));
171     ossl_prov_ctx_set0_handle(*provctx, handle);
172     ossl_prov_ctx_set0_core_bio_method(*provctx, corebiometh);
173
174     *out = base_dispatch_table;
175
176     return 1;
177 }