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X509_LOOKUP_meth_new(3)             OpenSSL            X509_LOOKUP_meth_new(3)

       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_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

       libcrypto, -lcrypto

        #include <openssl/x509_vfy.h>

        X509_LOOKUP_METHOD *X509_LOOKUP_meth_new(const char *name);
        void X509_LOOKUP_meth_free(X509_LOOKUP_METHOD *method);

        int X509_LOOKUP_meth_set_new_item(X509_LOOKUP_METHOD *method,
                                          int (*new_item) (X509_LOOKUP *ctx));
        int (*X509_LOOKUP_meth_get_new_item(const X509_LOOKUP_METHOD* method))
            (X509_LOOKUP *ctx);

        int X509_LOOKUP_meth_set_free(X509_LOOKUP_METHOD *method,
                                      void (*free) (X509_LOOKUP *ctx));
        void (*X509_LOOKUP_meth_get_free(const X509_LOOKUP_METHOD* method))
            (X509_LOOKUP *ctx);

        int X509_LOOKUP_meth_set_init(X509_LOOKUP_METHOD *method,
                                      int (*init) (X509_LOOKUP *ctx));
        int (*X509_LOOKUP_meth_get_init(const X509_LOOKUP_METHOD* method))
            (X509_LOOKUP *ctx);

        int X509_LOOKUP_meth_set_shutdown(X509_LOOKUP_METHOD *method,
                                          int (*shutdown) (X509_LOOKUP *ctx));
        int (*X509_LOOKUP_meth_get_shutdown(const X509_LOOKUP_METHOD* method))
            (X509_LOOKUP *ctx);

        typedef int (*X509_LOOKUP_ctrl_fn)(X509_LOOKUP *ctx, int cmd, const char *argc,
                                           long argl, char **ret);
        int X509_LOOKUP_meth_set_ctrl(X509_LOOKUP_METHOD *method,
            X509_LOOKUP_ctrl_fn ctrl_fn);
        X509_LOOKUP_ctrl_fn X509_LOOKUP_meth_get_ctrl(const X509_LOOKUP_METHOD *method);

        typedef int (*X509_LOOKUP_get_by_subject_fn)(X509_LOOKUP *ctx,
                                                     X509_LOOKUP_TYPE type,
                                                     X509_NAME *name,
                                                     X509_OBJECT *ret);
        int X509_LOOKUP_meth_set_get_by_subject(X509_LOOKUP_METHOD *method,
            X509_LOOKUP_get_by_subject_fn fn);
        X509_LOOKUP_get_by_subject_fn X509_LOOKUP_meth_get_get_by_subject(
            const X509_LOOKUP_METHOD *method);

        typedef int (*X509_LOOKUP_get_by_issuer_serial_fn)(X509_LOOKUP *ctx,
                                                           X509_LOOKUP_TYPE type,
                                                           X509_NAME *name,
                                                           ASN1_INTEGER *serial,
                                                           X509_OBJECT *ret);
        int X509_LOOKUP_meth_set_get_by_issuer_serial(
            X509_LOOKUP_METHOD *method, X509_LOOKUP_get_by_issuer_serial_fn fn);
        X509_LOOKUP_get_by_issuer_serial_fn X509_LOOKUP_meth_get_get_by_issuer_serial(
            const X509_LOOKUP_METHOD *method);

        typedef int (*X509_LOOKUP_get_by_fingerprint_fn)(X509_LOOKUP *ctx,
                                                         X509_LOOKUP_TYPE type,
                                                         const unsigned char* bytes,
                                                         int len,
                                                         X509_OBJECT *ret);
        int X509_LOOKUP_meth_set_get_by_fingerprint(X509_LOOKUP_METHOD *method,
            X509_LOOKUP_get_by_fingerprint_fn fn);
        X509_LOOKUP_get_by_fingerprint_fn X509_LOOKUP_meth_get_get_by_fingerprint(
            const X509_LOOKUP_METHOD *method);

        typedef int (*X509_LOOKUP_get_by_alias_fn)(X509_LOOKUP *ctx,
                                                   X509_LOOKUP_TYPE type,
                                                   const char *str,
                                                   int len,
                                                   X509_OBJECT *ret);
        int X509_LOOKUP_meth_set_get_by_alias(X509_LOOKUP_METHOD *method,
            X509_LOOKUP_get_by_alias_fn fn);
        X509_LOOKUP_get_by_alias_fn X509_LOOKUP_meth_get_get_by_alias(
            const X509_LOOKUP_METHOD *method);

        int X509_LOOKUP_set_method_data(X509_LOOKUP *ctx, void *data);
        void *X509_LOOKUP_get_method_data(const X509_LOOKUP *ctx);

        X509_STORE *X509_LOOKUP_get_store(const X509_LOOKUP *ctx);

        int X509_OBJECT_set1_X509(X509_OBJECT *a, X509 *obj);
        int X509_OBJECT_set1_X509_CRL(X509_OBJECT *a, X509_CRL *obj);

       The X509_LOOKUP_METHOD type is a structure used for the implementation
       of new X509_LOOKUP types. It provides a set of functions used by
       OpenSSL for the implementation of various X509 and X509_CRL lookup
       capabilities. One instance of an X509_LOOKUP_METHOD can be associated
       to many instantiations of an X509_LOOKUP structure.

       X509_LOOKUP_meth_new() creates a new X509_LOOKUP_METHOD structure. It
       should be given a human-readable string containing a brief description
       of the lookup method.

       X509_LOOKUP_meth_free() destroys a X509_LOOKUP_METHOD structure.

       X509_LOOKUP_get_new_item() and X509_LOOKUP_set_new_item() get and set
       the function that is called when an X509_LOOKUP object is created with
       X509_LOOKUP_new(). If an X509_LOOKUP_METHOD requires any
       per-X509_LOOKUP specific data, the supplied new_item function should
       allocate this data and invoke X509_LOOKUP_set_method_data().

       X509_LOOKUP_get_free() and X509_LOOKUP_set_free() get and set the
       function that is used to free any method data that was allocated and
       set from within new_item function.

       X509_LOOKUP_meth_get_init() and X509_LOOKUP_meth_set_init() get and set
       the function that is used to initialize the method data that was set
       with X509_LOOKUP_set_method_data() as part of the new_item routine.

       X509_LOOKUP_meth_get_shutdown() and X509_LOOKUP_meth_set_shutdown() get
       and set the function that is used to shut down the method data whose
       state was previously initialized in the init function.

       X509_LOOKUP_meth_get_ctrl() and X509_LOOKUP_meth_set_ctrl() get and set
       a function to be used to handle arbitrary control commands issued by
       X509_LOOKUP_ctrl(). The control function is given the X509_LOOKUP ctx,
       along with the arguments passed by X509_LOOKUP_ctrl. cmd is an
       arbitrary integer that defines some operation. argc is a pointer to an
       array of characters. argl is an integer. ret, if set, points to a
       location where any return data should be written to. How argc and argl
       are used depends entirely on the control function.

       X509_LOOKUP_set_get_by_fingerprint(), X509_LOOKUP_set_get_by_alias()
       set the functions used to retrieve an X509 or X509_CRL object by the
       object's subject, issuer, fingerprint, and alias respectively. These
       functions are given the X509_LOOKUP context, the type of the
       X509_OBJECT being requested, parameters related to the lookup, and an
       X509_OBJECT that will receive the requested object.

       Implementations should use either X509_OBJECT_set1_X509() or
       X509_OBJECT_set1_X509_CRL() to set the result. Any method data that was
       created as a result of the new_item function set by
       X509_LOOKUP_meth_set_new_item() can be accessed with
       X509_LOOKUP_get_method_data(). The X509_STORE object that owns the
       X509_LOOKUP may be accessed with X509_LOOKUP_get_store(). Successful
       lookups should return 1, and unsuccessful lookups should return 0.

       X509_LOOKUP_get_get_by_fingerprint(), X509_LOOKUP_get_get_by_alias()
       retrieve the function set by the corresponding setter.

       The X509_LOOKUP_meth_set functions return 1 on success or 0 on error.

       The X509_LOOKUP_meth_get functions return the corresponding function

       X509_STORE_new(3), SSL_CTX_set_cert_store(3)

       The functions described here were added in OpenSSL 1.1.0i.

       Copyright 2018 The OpenSSL Project Authors. All Rights Reserved.

       Licensed under the OpenSSL license (the "License").  You may not use
       this file except in compliance with the License.  You can obtain a copy
       in the file LICENSE in the source distribution or at

1.1.1                             2018-09-17           X509_LOOKUP_meth_new(3)