2 * Copyright 2016-2020 The OpenSSL Project Authors. All Rights Reserved.
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
10 #ifndef OPENSSL_STORE_H
11 # define OPENSSL_STORE_H
14 # include <openssl/macros.h>
15 # ifndef OPENSSL_NO_DEPRECATED_3_0
16 # define HEADER_OSSL_STORE_H
20 # include <openssl/types.h>
21 # include <openssl/pem.h>
22 # include <openssl/storeerr.h>
29 * The main OSSL_STORE functions.
30 * ------------------------------
32 * These allow applications to open a channel to a resource with supported
33 * data (keys, certs, crls, ...), read the data a piece at a time and decide
34 * what to do with it, and finally close.
37 typedef struct ossl_store_ctx_st OSSL_STORE_CTX;
40 * Typedef for the OSSL_STORE_INFO post processing callback. This can be used
41 * to massage the given OSSL_STORE_INFO, or to drop it entirely (by returning
44 typedef OSSL_STORE_INFO *(*OSSL_STORE_post_process_info_fn)(OSSL_STORE_INFO *,
48 * Open a channel given a URI. The given UI method will be used any time the
49 * loader needs extra input, for example when a password or pin is needed, and
50 * will be passed the same user data every time it's needed in this context.
52 * Returns a context reference which represents the channel to communicate
55 OSSL_STORE_CTX *OSSL_STORE_open(const char *uri, const UI_METHOD *ui_method,
57 OSSL_STORE_post_process_info_fn post_process,
58 void *post_process_data);
60 OSSL_STORE_CTX *OSSL_STORE_open_with_libctx
61 (const char *uri, OPENSSL_CTX *libctx, const char *propq,
62 const UI_METHOD *ui_method, void *ui_data,
63 OSSL_STORE_post_process_info_fn post_process, void *post_process_data);
66 * Control / fine tune the OSSL_STORE channel. |cmd| determines what is to be
67 * done, and depends on the underlying loader (use OSSL_STORE_get0_scheme to
68 * determine which loader is used), except for common commands (see below).
69 * Each command takes different arguments.
71 int OSSL_STORE_ctrl(OSSL_STORE_CTX *ctx, int cmd, ... /* args */);
72 int OSSL_STORE_vctrl(OSSL_STORE_CTX *ctx, int cmd, va_list args);
75 * Common ctrl commands that different loaders may choose to support.
77 /* int on = 0 or 1; STORE_ctrl(ctx, STORE_C_USE_SECMEM, &on); */
78 # define OSSL_STORE_C_USE_SECMEM 1
79 /* Where custom commands start */
80 # define OSSL_STORE_C_CUSTOM_START 100
83 * Read one data item (a key, a cert, a CRL) that is supported by the OSSL_STORE
84 * functionality, given a context.
85 * Returns a OSSL_STORE_INFO pointer, from which OpenSSL typed data can be
86 * extracted with OSSL_STORE_INFO_get0_PKEY(), OSSL_STORE_INFO_get0_CERT(), ...
87 * NULL is returned on error, which may include that the data found at the URI
88 * can't be figured out for certain or is ambiguous.
90 OSSL_STORE_INFO *OSSL_STORE_load(OSSL_STORE_CTX *ctx);
93 * Check if end of data (end of file) is reached
94 * Returns 1 on end, 0 otherwise.
96 int OSSL_STORE_eof(OSSL_STORE_CTX *ctx);
99 * Check if an error occurred
100 * Returns 1 if it did, 0 otherwise.
102 int OSSL_STORE_error(OSSL_STORE_CTX *ctx);
106 * Returns 1 on success, 0 on error.
108 int OSSL_STORE_close(OSSL_STORE_CTX *ctx);
111 * Attach to a BIO. This works like OSSL_STORE_open() except it takes a
112 * BIO instead of a uri, along with a scheme to use when reading.
113 * The given UI method will be used any time the loader needs extra input,
114 * for example when a password or pin is needed, and will be passed the
115 * same user data every time it's needed in this context.
117 * Returns a context reference which represents the channel to communicate
120 * Note that this function is considered unsafe, all depending on what the
121 * BIO actually reads.
123 OSSL_STORE_CTX *OSSL_STORE_attach(BIO *bio, const char *scheme,
124 OPENSSL_CTX *libctx, const char *propq,
125 const UI_METHOD *ui_method, void *ui_data,
126 OSSL_STORE_post_process_info_fn post_process,
127 void *post_process_data);
130 * Extracting OpenSSL types from and creating new OSSL_STORE_INFOs
131 * ---------------------------------------------------------------
135 * Types of data that can be ossl_stored in a OSSL_STORE_INFO.
136 * OSSL_STORE_INFO_NAME is typically found when getting a listing of
137 * available "files" / "tokens" / what have you.
139 # define OSSL_STORE_INFO_NAME 1 /* char * */
140 # define OSSL_STORE_INFO_PARAMS 2 /* EVP_PKEY * */
141 # define OSSL_STORE_INFO_PUBKEY 3 /* EVP_PKEY * */
142 # define OSSL_STORE_INFO_PKEY 4 /* EVP_PKEY * */
143 # define OSSL_STORE_INFO_CERT 5 /* X509 * */
144 # define OSSL_STORE_INFO_CRL 6 /* X509_CRL * */
147 * Functions to generate OSSL_STORE_INFOs, one function for each type we
148 * support having in them, as well as a generic constructor.
150 * In all cases, ownership of the object is transferred to the OSSL_STORE_INFO
151 * and will therefore be freed when the OSSL_STORE_INFO is freed.
153 OSSL_STORE_INFO *OSSL_STORE_INFO_new_NAME(char *name);
154 int OSSL_STORE_INFO_set0_NAME_description(OSSL_STORE_INFO *info, char *desc);
155 OSSL_STORE_INFO *OSSL_STORE_INFO_new_PARAMS(EVP_PKEY *params);
156 OSSL_STORE_INFO *OSSL_STORE_INFO_new_PUBKEY(EVP_PKEY *pubkey);
157 OSSL_STORE_INFO *OSSL_STORE_INFO_new_PKEY(EVP_PKEY *pkey);
158 OSSL_STORE_INFO *OSSL_STORE_INFO_new_CERT(X509 *x509);
159 OSSL_STORE_INFO *OSSL_STORE_INFO_new_CRL(X509_CRL *crl);
162 * Functions to try to extract data from a OSSL_STORE_INFO.
164 int OSSL_STORE_INFO_get_type(const OSSL_STORE_INFO *info);
165 const char *OSSL_STORE_INFO_get0_NAME(const OSSL_STORE_INFO *info);
166 char *OSSL_STORE_INFO_get1_NAME(const OSSL_STORE_INFO *info);
167 const char *OSSL_STORE_INFO_get0_NAME_description(const OSSL_STORE_INFO *info);
168 char *OSSL_STORE_INFO_get1_NAME_description(const OSSL_STORE_INFO *info);
169 EVP_PKEY *OSSL_STORE_INFO_get0_PARAMS(const OSSL_STORE_INFO *info);
170 EVP_PKEY *OSSL_STORE_INFO_get1_PARAMS(const OSSL_STORE_INFO *info);
171 EVP_PKEY *OSSL_STORE_INFO_get0_PUBKEY(const OSSL_STORE_INFO *info);
172 EVP_PKEY *OSSL_STORE_INFO_get1_PUBKEY(const OSSL_STORE_INFO *info);
173 EVP_PKEY *OSSL_STORE_INFO_get0_PKEY(const OSSL_STORE_INFO *info);
174 EVP_PKEY *OSSL_STORE_INFO_get1_PKEY(const OSSL_STORE_INFO *info);
175 X509 *OSSL_STORE_INFO_get0_CERT(const OSSL_STORE_INFO *info);
176 X509 *OSSL_STORE_INFO_get1_CERT(const OSSL_STORE_INFO *info);
177 X509_CRL *OSSL_STORE_INFO_get0_CRL(const OSSL_STORE_INFO *info);
178 X509_CRL *OSSL_STORE_INFO_get1_CRL(const OSSL_STORE_INFO *info);
180 const char *OSSL_STORE_INFO_type_string(int type);
183 * Free the OSSL_STORE_INFO
185 void OSSL_STORE_INFO_free(OSSL_STORE_INFO *info);
189 * Functions to construct a search URI from a base URI and search criteria
190 * -----------------------------------------------------------------------
193 /* OSSL_STORE search types */
194 # define OSSL_STORE_SEARCH_BY_NAME 1 /* subject in certs, issuer in CRLs */
195 # define OSSL_STORE_SEARCH_BY_ISSUER_SERIAL 2
196 # define OSSL_STORE_SEARCH_BY_KEY_FINGERPRINT 3
197 # define OSSL_STORE_SEARCH_BY_ALIAS 4
199 /* To check what search types the scheme handler supports */
200 int OSSL_STORE_supports_search(OSSL_STORE_CTX *ctx, int search_type);
202 /* Search term constructors */
204 * The input is considered to be owned by the caller, and must therefore
205 * remain present throughout the lifetime of the returned OSSL_STORE_SEARCH
207 OSSL_STORE_SEARCH *OSSL_STORE_SEARCH_by_name(X509_NAME *name);
208 OSSL_STORE_SEARCH *OSSL_STORE_SEARCH_by_issuer_serial(X509_NAME *name,
211 OSSL_STORE_SEARCH *OSSL_STORE_SEARCH_by_key_fingerprint(const EVP_MD *digest,
214 OSSL_STORE_SEARCH *OSSL_STORE_SEARCH_by_alias(const char *alias);
216 /* Search term destructor */
217 void OSSL_STORE_SEARCH_free(OSSL_STORE_SEARCH *search);
219 /* Search term accessors */
220 int OSSL_STORE_SEARCH_get_type(const OSSL_STORE_SEARCH *criterion);
221 X509_NAME *OSSL_STORE_SEARCH_get0_name(const OSSL_STORE_SEARCH *criterion);
222 const ASN1_INTEGER *OSSL_STORE_SEARCH_get0_serial(const OSSL_STORE_SEARCH
224 const unsigned char *OSSL_STORE_SEARCH_get0_bytes(const OSSL_STORE_SEARCH
225 *criterion, size_t *length);
226 const char *OSSL_STORE_SEARCH_get0_string(const OSSL_STORE_SEARCH *criterion);
227 const EVP_MD *OSSL_STORE_SEARCH_get0_digest(const OSSL_STORE_SEARCH *criterion);
230 * Add search criterion and expected return type (which can be unspecified)
231 * to the loading channel. This MUST happen before the first OSSL_STORE_load().
233 int OSSL_STORE_expect(OSSL_STORE_CTX *ctx, int expected_type);
234 int OSSL_STORE_find(OSSL_STORE_CTX *ctx, const OSSL_STORE_SEARCH *search);
238 * Function to fetch a loader and extract data from it
239 * ---------------------------------------------------
242 typedef struct ossl_store_loader_st OSSL_STORE_LOADER;
244 OSSL_STORE_LOADER *OSSL_STORE_LOADER_fetch(const char *scheme,
246 const char *properties);
247 int OSSL_STORE_LOADER_up_ref(OSSL_STORE_LOADER *loader);
248 void OSSL_STORE_LOADER_free(OSSL_STORE_LOADER *loader);
249 const OSSL_PROVIDER *OSSL_STORE_LOADER_provider(const OSSL_STORE_LOADER *
251 const char *OSSL_STORE_LOADER_properties(const OSSL_STORE_LOADER *loader);
252 int OSSL_STORE_LOADER_number(const OSSL_STORE_LOADER *loader);
253 int OSSL_STORE_LOADER_is_a(const OSSL_STORE_LOADER *loader,
255 void OSSL_STORE_LOADER_do_all_provided(OPENSSL_CTX *libctx,
256 void (*fn)(OSSL_STORE_LOADER *loader,
259 void OSSL_STORE_LOADER_names_do_all(const OSSL_STORE_LOADER *loader,
260 void (*fn)(const char *name, void *data),
264 * Function to register a loader for the given URI scheme.
265 * -------------------------------------------------------
267 * The loader receives all the main components of an URI except for the
271 /* struct ossl_store_loader_ctx_st is defined differently by each loader */
272 typedef struct ossl_store_loader_ctx_st OSSL_STORE_LOADER_CTX;
273 typedef OSSL_STORE_LOADER_CTX *(*OSSL_STORE_open_fn)
274 (const OSSL_STORE_LOADER *loader, const char *uri,
275 const UI_METHOD *ui_method, void *ui_data);
276 typedef OSSL_STORE_LOADER_CTX *(*OSSL_STORE_open_with_libctx_fn)
277 (const OSSL_STORE_LOADER *loader,
278 const char *uri, OPENSSL_CTX *libctx, const char *propq,
279 const UI_METHOD *ui_method, void *ui_data);
281 typedef OSSL_STORE_LOADER_CTX *(*OSSL_STORE_attach_fn)
282 (const OSSL_STORE_LOADER *loader, BIO *bio,
283 OPENSSL_CTX *libctx, const char *propq,
284 const UI_METHOD *ui_method, void *ui_data);
285 typedef int (*OSSL_STORE_ctrl_fn)
286 (OSSL_STORE_LOADER_CTX *ctx, int cmd, va_list args);
287 typedef int (*OSSL_STORE_expect_fn)
288 (OSSL_STORE_LOADER_CTX *ctx, int expected);
289 typedef int (*OSSL_STORE_find_fn)
290 (OSSL_STORE_LOADER_CTX *ctx, const OSSL_STORE_SEARCH *criteria);
291 typedef OSSL_STORE_INFO *(*OSSL_STORE_load_fn)
292 (OSSL_STORE_LOADER_CTX *ctx, const UI_METHOD *ui_method, void *ui_data);
293 typedef int (*OSSL_STORE_eof_fn)(OSSL_STORE_LOADER_CTX *ctx);
294 typedef int (*OSSL_STORE_error_fn)(OSSL_STORE_LOADER_CTX *ctx);
295 typedef int (*OSSL_STORE_close_fn)(OSSL_STORE_LOADER_CTX *ctx);
297 OSSL_STORE_LOADER *OSSL_STORE_LOADER_new(ENGINE *e, const char *scheme);
298 int OSSL_STORE_LOADER_set_open(OSSL_STORE_LOADER *loader,
299 OSSL_STORE_open_fn open_function);
300 int OSSL_STORE_LOADER_set_open_with_libctx
301 (OSSL_STORE_LOADER *loader,
302 OSSL_STORE_open_with_libctx_fn open_with_libctx_function);
303 int OSSL_STORE_LOADER_set_attach(OSSL_STORE_LOADER *loader,
304 OSSL_STORE_attach_fn attach_function);
305 int OSSL_STORE_LOADER_set_ctrl(OSSL_STORE_LOADER *loader,
306 OSSL_STORE_ctrl_fn ctrl_function);
307 int OSSL_STORE_LOADER_set_expect(OSSL_STORE_LOADER *loader,
308 OSSL_STORE_expect_fn expect_function);
309 int OSSL_STORE_LOADER_set_find(OSSL_STORE_LOADER *loader,
310 OSSL_STORE_find_fn find_function);
311 int OSSL_STORE_LOADER_set_load(OSSL_STORE_LOADER *loader,
312 OSSL_STORE_load_fn load_function);
313 int OSSL_STORE_LOADER_set_eof(OSSL_STORE_LOADER *loader,
314 OSSL_STORE_eof_fn eof_function);
315 int OSSL_STORE_LOADER_set_error(OSSL_STORE_LOADER *loader,
316 OSSL_STORE_error_fn error_function);
317 int OSSL_STORE_LOADER_set_close(OSSL_STORE_LOADER *loader,
318 OSSL_STORE_close_fn close_function);
320 const ENGINE *OSSL_STORE_LOADER_get0_engine(const OSSL_STORE_LOADER *loader);
321 const char * OSSL_STORE_LOADER_get0_scheme(const OSSL_STORE_LOADER *loader);
323 int OSSL_STORE_register_loader(OSSL_STORE_LOADER *loader);
324 OSSL_STORE_LOADER *OSSL_STORE_unregister_loader(const char *scheme);
327 * Functions to list STORE loaders
328 * -------------------------------
330 int OSSL_STORE_do_all_loaders(void (*do_function) (const OSSL_STORE_LOADER
331 *loader, void *do_arg),