Updated: 2025/Nov/16

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X509_REQ_get_extensions(3)          OpenSSL         X509_REQ_get_extensions(3)


NAME
       X509_REQ_get_extensions, X509_REQ_add_extensions,
       X509_REQ_add_extensions_nid - handle X.509 extension attributes of a
       CSR

SYNOPSIS
        #include <openssl/x509.h>

        STACK_OF(X509_EXTENSION) *X509_REQ_get_extensions(const X509_REQ *req);
        int X509_REQ_add_extensions(X509_REQ *req, const STACK_OF(X509_EXTENSION) *exts);
        int X509_REQ_add_extensions_nid(X509_REQ *req,
                                        const STACK_OF(X509_EXTENSION) *exts, int nid);

DESCRIPTION
       X509_REQ_get_extensions() returns the first list of X.509 extensions
       found in the attributes of req.  The returned list is empty if there
       are no such extensions in req.  The caller is responsible for freeing
       the list obtained.

       X509_REQ_add_extensions_nid() adds to req a list of X.509 extensions
       exts, using nid to identify the extensions attribute.  req is unchanged
       if exts is NULL or an empty list.  This function may be called more
       than once on the same req and nid.  In such case any previous
       extensions are augmented, where an extension to be added that has the
       same OID as a pre-existing one replaces this earlier one.

       X509_REQ_add_extensions() is like X509_REQ_add_extensions_nid() except
       that the default NID_ext_req is used.

RETURN VALUES
       X509_REQ_get_extensions() returns a pointer to STACK_OF(X509_EXTENSION)
       or NULL on error.

       X509_REQ_add_extensions() and X509_REQ_add_extensions_nid() return 1 on
       success, 0 on error.

COPYRIGHT
       Copyright 2022-2024 The OpenSSL Project Authors. All Rights Reserved.

       Licensed under the Apache License 2.0 (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
       <https://www.openssl.org/source/license.html>.

3.5.1                             2025-07-01        X509_REQ_get_extensions(3)