109 lines
3.3 KiB
Plaintext
109 lines
3.3 KiB
Plaintext
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=pod
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=head1 NAME
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OSSL_CMP_ITAV_create,
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OSSL_CMP_ITAV_set0,
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OSSL_CMP_ITAV_get0_type,
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OSSL_CMP_ITAV_get0_value,
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OSSL_CMP_ITAV_push0_stack_item
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- OSSL_CMP_ITAV utility functions
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=head1 SYNOPSIS
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#include <openssl/cmp.h>
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OSSL_CMP_ITAV *OSSL_CMP_ITAV_create(ASN1_OBJECT *type, ASN1_TYPE *value);
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void OSSL_CMP_ITAV_set0(OSSL_CMP_ITAV *itav, ASN1_OBJECT *type,
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ASN1_TYPE *value);
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ASN1_OBJECT *OSSL_CMP_ITAV_get0_type(const OSSL_CMP_ITAV *itav);
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ASN1_TYPE *OSSL_CMP_ITAV_get0_value(const OSSL_CMP_ITAV *itav);
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int OSSL_CMP_ITAV_push0_stack_item(STACK_OF(OSSL_CMP_ITAV) **itav_sk_p,
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OSSL_CMP_ITAV *itav);
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=head1 DESCRIPTION
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ITAV is short for InfoTypeAndValue. This type is defined in RFC 4210
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section 5.3.19 and Appendix F. It is used at various places in CMP messages,
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e.g., in the generalInfo PKIHeader field, to hold a key-value pair.
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OSSL_CMP_ITAV_create() creates a new B<OSSL_CMP_ITAV> structure and fills it in.
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It combines OSSL_CMP_ITAV_new() and OSSL_CMP_ITAV_set0().
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OSSL_CMP_ITAV_set0() sets the I<itav> with an infoType of I<type> and an
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infoValue of I<value>. This function uses the pointers I<type> and I<value>
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internally, so they must B<not> be freed up after the call.
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OSSL_CMP_ITAV_get0_type() returns a direct pointer to the infoType in the
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I<itav>.
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OSSL_CMP_ITAV_get0_value() returns a direct pointer to the infoValue in
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the I<itav> as generic B<ASN1_TYPE> pointer.
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OSSL_CMP_ITAV_push0_stack_item() pushes I<itav> to the stack pointed to
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by I<*itav_sk_p>. It creates a new stack if I<*itav_sk_p> points to NULL.
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=head1 NOTES
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CMP is defined in RFC 4210 (and CRMF in RFC 4211).
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=head1 RETURN VALUES
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OSSL_CMP_ITAV_create() returns a pointer to the ITAV structure on success,
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or NULL on error.
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OSSL_CMP_ITAV_set0() does not return a value.
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OSSL_CMP_ITAV_get0_type() and OSSL_CMP_ITAV_get0_value()
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return the respective pointer or NULL if their input is NULL.
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OSSL_CMP_ITAV_push0_stack_item() returns 1 on success, 0 on error.
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=head1 EXAMPLES
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The following code creates and sets a structure representing a generic
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InfoTypeAndValue sequence, using an OID created from text as type, and an
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integer as value. Afterwards, it is pushed to the B<OSSL_CMP_CTX> to be later
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included in the requests' PKIHeader's genInfo field.
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ASN1_OBJECT *type = OBJ_txt2obj("1.2.3.4.5", 1);
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if (type == NULL) ...
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ASN1_INTEGER *asn1int = ASN1_INTEGER_new();
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if (asn1int == NULL || !ASN1_INTEGER_set(asn1int, 12345)) ...
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ASN1_TYPE *val = ASN1_TYPE_new();
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if (val == NULL) ...
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ASN1_TYPE_set(val, V_ASN1_INTEGER, asn1int);
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OSSL_CMP_ITAV *itav = OSSL_CMP_ITAV_create(type, val);
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if (itav == NULL) ...
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if (!OSSL_CMP_CTX_push0_geninfo_ITAV(ctx, itav)) {
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OSSL_CMP_ITAV_free(itav); /* also frees type and val */
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...
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}
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...
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OSSL_CMP_CTX_free(ctx); /* also frees itav */
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=head1 SEE ALSO
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L<OSSL_CMP_CTX_new(3)>, L<OSSL_CMP_CTX_free(3)>, L<ASN1_TYPE_set(3)>
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=head1 HISTORY
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The OpenSSL CMP support was added in OpenSSL 3.0.
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=head1 COPYRIGHT
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Copyright 2007-2021 The OpenSSL Project Authors. All Rights Reserved.
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Licensed under the Apache License 2.0 (the "License"). You may not use
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this file except in compliance with the License. You can obtain a copy
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in the file LICENSE in the source distribution or at
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L<https://www.openssl.org/source/license.html>.
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=cut
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