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133 .\" ========================================================================
135 .IX Title "X509_LOOKUP_METH_NEW 3"
136 .TH X509_LOOKUP_METH_NEW 3 "2020-09-22" "1.1.1h" "OpenSSL"
137 .\" For nroff, turn off justification. Always turn off hyphenation; it makes
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142 X509_LOOKUP_METHOD, X509_LOOKUP_meth_new, X509_LOOKUP_meth_free, X509_LOOKUP_meth_set_new_item, X509_LOOKUP_meth_get_new_item, X509_LOOKUP_meth_set_free, X509_LOOKUP_meth_get_free, X509_LOOKUP_meth_set_init, X509_LOOKUP_meth_get_init, X509_LOOKUP_meth_set_shutdown, X509_LOOKUP_meth_get_shutdown, X509_LOOKUP_ctrl_fn, X509_LOOKUP_meth_set_ctrl, X509_LOOKUP_meth_get_ctrl, X509_LOOKUP_get_by_subject_fn, X509_LOOKUP_meth_set_get_by_subject, X509_LOOKUP_meth_get_get_by_subject, X509_LOOKUP_get_by_issuer_serial_fn, X509_LOOKUP_meth_set_get_by_issuer_serial, X509_LOOKUP_meth_get_get_by_issuer_serial, X509_LOOKUP_get_by_fingerprint_fn, X509_LOOKUP_meth_set_get_by_fingerprint, X509_LOOKUP_meth_get_get_by_fingerprint, X509_LOOKUP_get_by_alias_fn, X509_LOOKUP_meth_set_get_by_alias, X509_LOOKUP_meth_get_get_by_alias, X509_OBJECT_set1_X509, X509_OBJECT_set1_X509_CRL \&\- Routines to build up X509_LOOKUP methods
144 .IX Header "SYNOPSIS"
146 \& #include <openssl/x509_vfy.h>
148 \& typedef x509_lookup_method_st X509_LOOKUP_METHOD;
150 \& X509_LOOKUP_METHOD *X509_LOOKUP_meth_new(const char *name);
151 \& void X509_LOOKUP_meth_free(X509_LOOKUP_METHOD *method);
153 \& int X509_LOOKUP_meth_set_new_item(X509_LOOKUP_METHOD *method,
154 \& int (*new_item) (X509_LOOKUP *ctx));
155 \& int (*X509_LOOKUP_meth_get_new_item(const X509_LOOKUP_METHOD* method))
156 \& (X509_LOOKUP *ctx);
158 \& int X509_LOOKUP_meth_set_free(X509_LOOKUP_METHOD *method,
159 \& void (*free) (X509_LOOKUP *ctx));
160 \& void (*X509_LOOKUP_meth_get_free(const X509_LOOKUP_METHOD* method))
161 \& (X509_LOOKUP *ctx);
163 \& int X509_LOOKUP_meth_set_init(X509_LOOKUP_METHOD *method,
164 \& int (*init) (X509_LOOKUP *ctx));
165 \& int (*X509_LOOKUP_meth_get_init(const X509_LOOKUP_METHOD* method))
166 \& (X509_LOOKUP *ctx);
168 \& int X509_LOOKUP_meth_set_shutdown(X509_LOOKUP_METHOD *method,
169 \& int (*shutdown) (X509_LOOKUP *ctx));
170 \& int (*X509_LOOKUP_meth_get_shutdown(const X509_LOOKUP_METHOD* method))
171 \& (X509_LOOKUP *ctx);
173 \& typedef int (*X509_LOOKUP_ctrl_fn)(X509_LOOKUP *ctx, int cmd, const char *argc,
174 \& long argl, char **ret);
175 \& int X509_LOOKUP_meth_set_ctrl(X509_LOOKUP_METHOD *method,
176 \& X509_LOOKUP_ctrl_fn ctrl_fn);
177 \& X509_LOOKUP_ctrl_fn X509_LOOKUP_meth_get_ctrl(const X509_LOOKUP_METHOD *method);
179 \& typedef int (*X509_LOOKUP_get_by_subject_fn)(X509_LOOKUP *ctx,
180 \& X509_LOOKUP_TYPE type,
182 \& X509_OBJECT *ret);
183 \& int X509_LOOKUP_meth_set_get_by_subject(X509_LOOKUP_METHOD *method,
184 \& X509_LOOKUP_get_by_subject_fn fn);
185 \& X509_LOOKUP_get_by_subject_fn X509_LOOKUP_meth_get_get_by_subject(
186 \& const X509_LOOKUP_METHOD *method);
188 \& typedef int (*X509_LOOKUP_get_by_issuer_serial_fn)(X509_LOOKUP *ctx,
189 \& X509_LOOKUP_TYPE type,
191 \& ASN1_INTEGER *serial,
192 \& X509_OBJECT *ret);
193 \& int X509_LOOKUP_meth_set_get_by_issuer_serial(
194 \& X509_LOOKUP_METHOD *method, X509_LOOKUP_get_by_issuer_serial_fn fn);
195 \& X509_LOOKUP_get_by_issuer_serial_fn X509_LOOKUP_meth_get_get_by_issuer_serial(
196 \& const X509_LOOKUP_METHOD *method);
198 \& typedef int (*X509_LOOKUP_get_by_fingerprint_fn)(X509_LOOKUP *ctx,
199 \& X509_LOOKUP_TYPE type,
200 \& const unsigned char* bytes,
202 \& X509_OBJECT *ret);
203 \& int X509_LOOKUP_meth_set_get_by_fingerprint(X509_LOOKUP_METHOD *method,
204 \& X509_LOOKUP_get_by_fingerprint_fn fn);
205 \& X509_LOOKUP_get_by_fingerprint_fn X509_LOOKUP_meth_get_get_by_fingerprint(
206 \& const X509_LOOKUP_METHOD *method);
208 \& typedef int (*X509_LOOKUP_get_by_alias_fn)(X509_LOOKUP *ctx,
209 \& X509_LOOKUP_TYPE type,
212 \& X509_OBJECT *ret);
213 \& int X509_LOOKUP_meth_set_get_by_alias(X509_LOOKUP_METHOD *method,
214 \& X509_LOOKUP_get_by_alias_fn fn);
215 \& X509_LOOKUP_get_by_alias_fn X509_LOOKUP_meth_get_get_by_alias(
216 \& const X509_LOOKUP_METHOD *method);
218 \& int X509_OBJECT_set1_X509(X509_OBJECT *a, X509 *obj);
219 \& int X509_OBJECT_set1_X509_CRL(X509_OBJECT *a, X509_CRL *obj);
222 .IX Header "DESCRIPTION"
223 The \fBX509_LOOKUP_METHOD\fR type is a structure used for the implementation of new
224 X509_LOOKUP types. It provides a set of functions used by OpenSSL for the
225 implementation of various X509 and X509_CRL lookup capabilities. One instance
226 of an X509_LOOKUP_METHOD can be associated to many instantiations of an
227 \&\fBX509_LOOKUP\fR structure.
229 \&\fBX509_LOOKUP_meth_new()\fR creates a new \fBX509_LOOKUP_METHOD\fR structure. It should
230 be given a human-readable string containing a brief description of the lookup
233 \&\fBX509_LOOKUP_meth_free()\fR destroys a \fBX509_LOOKUP_METHOD\fR structure.
235 \&\fBX509_LOOKUP_get_new_item()\fR and \fBX509_LOOKUP_set_new_item()\fR get and set the
236 function that is called when an \fBX509_LOOKUP\fR object is created with
237 \&\fBX509_LOOKUP_new()\fR. If an X509_LOOKUP_METHOD requires any per\-X509_LOOKUP
238 specific data, the supplied new_item function should allocate this data and
239 invoke \fBX509_LOOKUP_set_method_data\fR\|(3).
241 \&\fBX509_LOOKUP_get_free()\fR and \fBX509_LOOKUP_set_free()\fR get and set the function
242 that is used to free any method data that was allocated and set from within
245 \&\fBX509_LOOKUP_meth_get_init()\fR and \fBX509_LOOKUP_meth_set_init()\fR get and set the
246 function that is used to initialize the method data that was set with
247 \&\fBX509_LOOKUP_set_method_data\fR\|(3) as part of the new_item routine.
249 \&\fBX509_LOOKUP_meth_get_shutdown()\fR and \fBX509_LOOKUP_meth_set_shutdown()\fR get and set
250 the function that is used to shut down the method data whose state was
251 previously initialized in the init function.
253 \&\fBX509_LOOKUP_meth_get_ctrl()\fR and \fBX509_LOOKUP_meth_set_ctrl()\fR get and set a
254 function to be used to handle arbitrary control commands issued by
255 \&\fBX509_LOOKUP_ctrl()\fR. The control function is given the X509_LOOKUP
256 \&\fBctx\fR, along with the arguments passed by X509_LOOKUP_ctrl. \fBcmd\fR is
257 an arbitrary integer that defines some operation. \fBargc\fR is a pointer
258 to an array of characters. \fBargl\fR is an integer. \fBret\fR, if set,
259 points to a location where any return data should be written to. How
260 \&\fBargc\fR and \fBargl\fR are used depends entirely on the control function.
262 \&\fBX509_LOOKUP_set_get_by_subject()\fR, \fBX509_LOOKUP_set_get_by_issuer_serial()\fR,
263 \&\fBX509_LOOKUP_set_get_by_fingerprint()\fR, \fBX509_LOOKUP_set_get_by_alias()\fR set
264 the functions used to retrieve an X509 or X509_CRL object by the object's
265 subject, issuer, fingerprint, and alias respectively. These functions are given
266 the X509_LOOKUP context, the type of the X509_OBJECT being requested, parameters
267 related to the lookup, and an X509_OBJECT that will receive the requested
270 Implementations must add objects they find to the \fBX509_STORE\fR object
271 using \fBX509_STORE_add_cert()\fR or \fBX509_STORE_add_crl()\fR. This increments
272 its reference count. However, the \fBX509_STORE_CTX_get_by_subject()\fR
273 function also increases the reference count which leads to one too
274 many references being held. Therefore, applications should
275 additionally call \fBX509_free()\fR or \fBX509_CRL_free()\fR to decrement the
276 reference count again.
278 Implementations should also use either \fBX509_OBJECT_set1_X509()\fR or
279 \&\fBX509_OBJECT_set1_X509_CRL()\fR to set the result. Note that this also
280 increments the result's reference count.
282 Any method data that was created as a result of the new_item function
283 set by \fBX509_LOOKUP_meth_set_new_item()\fR can be accessed with
284 \&\fBX509_LOOKUP_get_method_data\fR\|(3). The \fBX509_STORE\fR object that owns the
285 X509_LOOKUP may be accessed with \fBX509_LOOKUP_get_store\fR\|(3). Successful
286 lookups should return 1, and unsuccessful lookups should return 0.
288 \&\fBX509_LOOKUP_get_get_by_subject()\fR, \fBX509_LOOKUP_get_get_by_issuer_serial()\fR,
289 \&\fBX509_LOOKUP_get_get_by_fingerprint()\fR, \fBX509_LOOKUP_get_get_by_alias()\fR retrieve
290 the function set by the corresponding setter.
292 .IX Header "RETURN VALUES"
293 The \fBX509_LOOKUP_meth_set\fR functions return 1 on success or 0 on error.
295 The \fBX509_LOOKUP_meth_get\fR functions return the corresponding function
298 .IX Header "SEE ALSO"
299 \&\fBX509_STORE_new\fR\|(3), \fBSSL_CTX_set_cert_store\fR\|(3)
302 The functions described here were added in OpenSSL 1.1.0i.
304 .IX Header "COPYRIGHT"
305 Copyright 2018\-2020 The OpenSSL Project Authors. All Rights Reserved.
307 Licensed under the OpenSSL license (the \*(L"License\*(R"). You may not use
308 this file except in compliance with the License. You can obtain a copy
309 in the file \s-1LICENSE\s0 in the source distribution or at
310 <https://www.openssl.org/source/license.html>.