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133 .\" ========================================================================
135 .IX Title "X509_LOOKUP_METH_NEW 3"
136 .TH X509_LOOKUP_METH_NEW 3 "2019-05-28" "1.1.1c" "OpenSSL"
137 .\" For nroff, turn off justification. Always turn off hyphenation; it makes
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142 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_LOOKUP_set_method_data, X509_LOOKUP_get_method_data, X509_LOOKUP_get_store, 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 \& X509_LOOKUP_METHOD *X509_LOOKUP_meth_new(const char *name);
149 \& void X509_LOOKUP_meth_free(X509_LOOKUP_METHOD *method);
151 \& int X509_LOOKUP_meth_set_new_item(X509_LOOKUP_METHOD *method,
152 \& int (*new_item) (X509_LOOKUP *ctx));
153 \& int (*X509_LOOKUP_meth_get_new_item(const X509_LOOKUP_METHOD* method))
154 \& (X509_LOOKUP *ctx);
156 \& int X509_LOOKUP_meth_set_free(X509_LOOKUP_METHOD *method,
157 \& void (*free) (X509_LOOKUP *ctx));
158 \& void (*X509_LOOKUP_meth_get_free(const X509_LOOKUP_METHOD* method))
159 \& (X509_LOOKUP *ctx);
161 \& int X509_LOOKUP_meth_set_init(X509_LOOKUP_METHOD *method,
162 \& int (*init) (X509_LOOKUP *ctx));
163 \& int (*X509_LOOKUP_meth_get_init(const X509_LOOKUP_METHOD* method))
164 \& (X509_LOOKUP *ctx);
166 \& int X509_LOOKUP_meth_set_shutdown(X509_LOOKUP_METHOD *method,
167 \& int (*shutdown) (X509_LOOKUP *ctx));
168 \& int (*X509_LOOKUP_meth_get_shutdown(const X509_LOOKUP_METHOD* method))
169 \& (X509_LOOKUP *ctx);
171 \& typedef int (*X509_LOOKUP_ctrl_fn)(X509_LOOKUP *ctx, int cmd, const char *argc,
172 \& long argl, char **ret);
173 \& int X509_LOOKUP_meth_set_ctrl(X509_LOOKUP_METHOD *method,
174 \& X509_LOOKUP_ctrl_fn ctrl_fn);
175 \& X509_LOOKUP_ctrl_fn X509_LOOKUP_meth_get_ctrl(const X509_LOOKUP_METHOD *method);
177 \& typedef int (*X509_LOOKUP_get_by_subject_fn)(X509_LOOKUP *ctx,
178 \& X509_LOOKUP_TYPE type,
180 \& X509_OBJECT *ret);
181 \& int X509_LOOKUP_meth_set_get_by_subject(X509_LOOKUP_METHOD *method,
182 \& X509_LOOKUP_get_by_subject_fn fn);
183 \& X509_LOOKUP_get_by_subject_fn X509_LOOKUP_meth_get_get_by_subject(
184 \& const X509_LOOKUP_METHOD *method);
186 \& typedef int (*X509_LOOKUP_get_by_issuer_serial_fn)(X509_LOOKUP *ctx,
187 \& X509_LOOKUP_TYPE type,
189 \& ASN1_INTEGER *serial,
190 \& X509_OBJECT *ret);
191 \& int X509_LOOKUP_meth_set_get_by_issuer_serial(
192 \& X509_LOOKUP_METHOD *method, X509_LOOKUP_get_by_issuer_serial_fn fn);
193 \& X509_LOOKUP_get_by_issuer_serial_fn X509_LOOKUP_meth_get_get_by_issuer_serial(
194 \& const X509_LOOKUP_METHOD *method);
196 \& typedef int (*X509_LOOKUP_get_by_fingerprint_fn)(X509_LOOKUP *ctx,
197 \& X509_LOOKUP_TYPE type,
198 \& const unsigned char* bytes,
200 \& X509_OBJECT *ret);
201 \& int X509_LOOKUP_meth_set_get_by_fingerprint(X509_LOOKUP_METHOD *method,
202 \& X509_LOOKUP_get_by_fingerprint_fn fn);
203 \& X509_LOOKUP_get_by_fingerprint_fn X509_LOOKUP_meth_get_get_by_fingerprint(
204 \& const X509_LOOKUP_METHOD *method);
206 \& typedef int (*X509_LOOKUP_get_by_alias_fn)(X509_LOOKUP *ctx,
207 \& X509_LOOKUP_TYPE type,
210 \& X509_OBJECT *ret);
211 \& int X509_LOOKUP_meth_set_get_by_alias(X509_LOOKUP_METHOD *method,
212 \& X509_LOOKUP_get_by_alias_fn fn);
213 \& X509_LOOKUP_get_by_alias_fn X509_LOOKUP_meth_get_get_by_alias(
214 \& const X509_LOOKUP_METHOD *method);
216 \& int X509_LOOKUP_set_method_data(X509_LOOKUP *ctx, void *data);
217 \& void *X509_LOOKUP_get_method_data(const X509_LOOKUP *ctx);
219 \& X509_STORE *X509_LOOKUP_get_store(const X509_LOOKUP *ctx);
221 \& int X509_OBJECT_set1_X509(X509_OBJECT *a, X509 *obj);
222 \& int X509_OBJECT_set1_X509_CRL(X509_OBJECT *a, X509_CRL *obj);
225 .IX Header "DESCRIPTION"
226 The \fBX509_LOOKUP_METHOD\fR type is a structure used for the implementation of new
227 X509_LOOKUP types. It provides a set of functions used by OpenSSL for the
228 implementation of various X509 and X509_CRL lookup capabilities. One instance
229 of an X509_LOOKUP_METHOD can be associated to many instantiations of an
230 \&\fBX509_LOOKUP\fR structure.
232 \&\fBX509_LOOKUP_meth_new()\fR creates a new \fBX509_LOOKUP_METHOD\fR structure. It should
233 be given a human-readable string containing a brief description of the lookup
236 \&\fBX509_LOOKUP_meth_free()\fR destroys a \fBX509_LOOKUP_METHOD\fR structure.
238 \&\fBX509_LOOKUP_get_new_item()\fR and \fBX509_LOOKUP_set_new_item()\fR get and set the
239 function that is called when an \fBX509_LOOKUP\fR object is created with
240 \&\fBX509_LOOKUP_new()\fR. If an X509_LOOKUP_METHOD requires any per\-X509_LOOKUP
241 specific data, the supplied new_item function should allocate this data and
242 invoke \fBX509_LOOKUP_set_method_data()\fR.
244 \&\fBX509_LOOKUP_get_free()\fR and \fBX509_LOOKUP_set_free()\fR get and set the function
245 that is used to free any method data that was allocated and set from within
248 \&\fBX509_LOOKUP_meth_get_init()\fR and \fBX509_LOOKUP_meth_set_init()\fR get and set the
249 function that is used to initialize the method data that was set with
250 \&\fBX509_LOOKUP_set_method_data()\fR as part of the new_item routine.
252 \&\fBX509_LOOKUP_meth_get_shutdown()\fR and \fBX509_LOOKUP_meth_set_shutdown()\fR get and set
253 the function that is used to shut down the method data whose state was
254 previously initialized in the init function.
256 \&\fBX509_LOOKUP_meth_get_ctrl()\fR and \fBX509_LOOKUP_meth_set_ctrl()\fR get and set a
257 function to be used to handle arbitrary control commands issued by
258 \&\fBX509_LOOKUP_ctrl()\fR. The control function is given the X509_LOOKUP
259 \&\fBctx\fR, along with the arguments passed by X509_LOOKUP_ctrl. \fBcmd\fR is
260 an arbitrary integer that defines some operation. \fBargc\fR is a pointer
261 to an array of characters. \fBargl\fR is an integer. \fBret\fR, if set,
262 points to a location where any return data should be written to. How
263 \&\fBargc\fR and \fBargl\fR are used depends entirely on the control function.
265 \&\fBX509_LOOKUP_set_get_by_subject()\fR, \fBX509_LOOKUP_set_get_by_issuer_serial()\fR,
266 \&\fBX509_LOOKUP_set_get_by_fingerprint()\fR, \fBX509_LOOKUP_set_get_by_alias()\fR set
267 the functions used to retrieve an X509 or X509_CRL object by the object's
268 subject, issuer, fingerprint, and alias respectively. These functions are given
269 the X509_LOOKUP context, the type of the X509_OBJECT being requested, parameters
270 related to the lookup, and an X509_OBJECT that will receive the requested
273 Implementations must add objects they find to the \fBX509_STORE\fR object
274 using \fBX509_STORE_add_cert()\fR or \fBX509_STORE_add_crl()\fR. This increments
275 its reference count. However, the \fBX509_STORE_CTX_get_by_subject()\fR
276 function also increases the reference count which leads to one too
277 many references being held. Therefore applications should
278 additionally call \fBX509_free()\fR or \fBX509_CRL_free()\fR to decrement the
279 reference count again.
281 Implementations should also use either \fBX509_OBJECT_set1_X509()\fR or
282 \&\fBX509_OBJECT_set1_X509_CRL()\fR to set the result. Note that this also
283 increments the result's reference count.
285 Any method data that was created as a result of the new_item function
286 set by \fBX509_LOOKUP_meth_set_new_item()\fR can be accessed with
287 \&\fBX509_LOOKUP_get_method_data()\fR. The \fBX509_STORE\fR object that owns the
288 X509_LOOKUP may be accessed with \fBX509_LOOKUP_get_store()\fR. Successful lookups
289 should return 1, and unsuccessful lookups should return 0.
291 \&\fBX509_LOOKUP_get_get_by_subject()\fR, \fBX509_LOOKUP_get_get_by_issuer_serial()\fR,
292 \&\fBX509_LOOKUP_get_get_by_fingerprint()\fR, \fBX509_LOOKUP_get_get_by_alias()\fR retrieve
293 the function set by the corresponding setter.
295 .IX Header "RETURN VALUES"
296 The \fBX509_LOOKUP_meth_set\fR functions return 1 on success or 0 on error.
298 The \fBX509_LOOKUP_meth_get\fR functions return the corresponding function
301 .IX Header "SEE ALSO"
302 \&\fBX509_STORE_new\fR\|(3), \fBSSL_CTX_set_cert_store\fR\|(3)
305 The functions described here were added in OpenSSL 1.1.0i.
307 .IX Header "COPYRIGHT"
308 Copyright 2018\-2019 The OpenSSL Project Authors. All Rights Reserved.
310 Licensed under the OpenSSL license (the \*(L"License\*(R"). You may not use
311 this file except in compliance with the License. You can obtain a copy
312 in the file \s-1LICENSE\s0 in the source distribution or at
313 <https://www.openssl.org/source/license.html>.