openssl/doc/man3/X509_dup.pod

=pod

=head1 NAME

DECLARE_ASN1_FUNCTIONS,
IMPLEMENT_ASN1_FUNCTIONS,
ASN1_ITEM,
ACCESS_DESCRIPTION_free,
ACCESS_DESCRIPTION_new,
ADMISSIONS_free,
ADMISSIONS_new,
ADMISSION_SYNTAX_free,
ADMISSION_SYNTAX_new,
ASIdOrRange_free,
ASIdOrRange_new,
ASIdentifierChoice_free,
ASIdentifierChoice_new,
ASIdentifiers_free,
ASIdentifiers_new,
ASRange_free,
ASRange_new,
AUTHORITY_INFO_ACCESS_free,
AUTHORITY_INFO_ACCESS_new,
AUTHORITY_KEYID_free,
AUTHORITY_KEYID_new,
BASIC_CONSTRAINTS_free,
BASIC_CONSTRAINTS_new,
CERTIFICATEPOLICIES_free,
CERTIFICATEPOLICIES_new,
CMS_ContentInfo_free,
CMS_ContentInfo_new,
CMS_ContentInfo_print_ctx,
CMS_ReceiptRequest_free,
CMS_ReceiptRequest_new,
CRL_DIST_POINTS_free,
CRL_DIST_POINTS_new,
DIRECTORYSTRING_free,
DIRECTORYSTRING_new,
DISPLAYTEXT_free,
DISPLAYTEXT_new,
DIST_POINT_NAME_free,
DIST_POINT_NAME_new,
DIST_POINT_free,
DIST_POINT_new,
DSAparams_dup,
ECPARAMETERS_free,
ECPARAMETERS_new,
ECPKPARAMETERS_free,
ECPKPARAMETERS_new,
EDIPARTYNAME_free,
EDIPARTYNAME_new,
ESS_CERT_ID_dup,
ESS_CERT_ID_free,
ESS_CERT_ID_new,
ESS_ISSUER_SERIAL_dup,
ESS_ISSUER_SERIAL_free,
ESS_ISSUER_SERIAL_new,
ESS_SIGNING_CERT_dup,
ESS_SIGNING_CERT_free,
ESS_SIGNING_CERT_new,
EXTENDED_KEY_USAGE_free,
EXTENDED_KEY_USAGE_new,
GENERAL_NAMES_free,
GENERAL_NAMES_new,
GENERAL_NAME_dup,
GENERAL_NAME_free,
GENERAL_NAME_new,
GENERAL_SUBTREE_free,
GENERAL_SUBTREE_new,
IPAddressChoice_free,
IPAddressChoice_new,
IPAddressFamily_free,
IPAddressFamily_new,
IPAddressOrRange_free,
IPAddressOrRange_new,
IPAddressRange_free,
IPAddressRange_new,
ISSUING_DIST_POINT_free,
ISSUING_DIST_POINT_new,
NAME_CONSTRAINTS_free,
NAME_CONSTRAINTS_new,
NAMING_AUTHORITY_free,
NAMING_AUTHORITY_new,
NETSCAPE_CERT_SEQUENCE_free,
NETSCAPE_CERT_SEQUENCE_new,
NETSCAPE_SPKAC_free,
NETSCAPE_SPKAC_new,
NETSCAPE_SPKI_free,
NETSCAPE_SPKI_new,
NOTICEREF_free,
NOTICEREF_new,
OCSP_BASICRESP_free,
OCSP_BASICRESP_new,
OCSP_CERTID_dup,
OCSP_CERTID_new,
OCSP_CERTSTATUS_free,
OCSP_CERTSTATUS_new,
OCSP_CRLID_free,
OCSP_CRLID_new,
OCSP_ONEREQ_free,
OCSP_ONEREQ_new,
OCSP_REQINFO_free,
OCSP_REQINFO_new,
OCSP_RESPBYTES_free,
OCSP_RESPBYTES_new,
OCSP_RESPDATA_free,
OCSP_RESPDATA_new,
OCSP_RESPID_free,
OCSP_RESPID_new,
OCSP_RESPONSE_new,
OCSP_REVOKEDINFO_free,
OCSP_REVOKEDINFO_new,
OCSP_SERVICELOC_free,
OCSP_SERVICELOC_new,
OCSP_SIGNATURE_free,
OCSP_SIGNATURE_new,
OCSP_SINGLERESP_free,
OCSP_SINGLERESP_new,
OTHERNAME_free,
OTHERNAME_new,
PBE2PARAM_free,
PBE2PARAM_new,
PBEPARAM_free,
PBEPARAM_new,
PBKDF2PARAM_free,
PBKDF2PARAM_new,
PKCS12_BAGS_free,
PKCS12_BAGS_new,
PKCS12_MAC_DATA_free,
PKCS12_MAC_DATA_new,
PKCS12_SAFEBAG_free,
PKCS12_SAFEBAG_new,
PKCS12_free,
PKCS12_new,
PKCS7_DIGEST_free,
PKCS7_DIGEST_new,
PKCS7_ENCRYPT_free,
PKCS7_ENCRYPT_new,
PKCS7_ENC_CONTENT_free,
PKCS7_ENC_CONTENT_new,
PKCS7_ENVELOPE_free,
PKCS7_ENVELOPE_new,
PKCS7_ISSUER_AND_SERIAL_free,
PKCS7_ISSUER_AND_SERIAL_new,
PKCS7_RECIP_INFO_free,
PKCS7_RECIP_INFO_new,
PKCS7_SIGNED_free,
PKCS7_SIGNED_new,
PKCS7_SIGNER_INFO_free,
PKCS7_SIGNER_INFO_new,
PKCS7_SIGN_ENVELOPE_free,
PKCS7_SIGN_ENVELOPE_new,
PKCS7_dup,
PKCS7_free,
PKCS7_new,
PKCS7_print_ctx,
PKCS8_PRIV_KEY_INFO_free,
PKCS8_PRIV_KEY_INFO_new,
PKEY_USAGE_PERIOD_free,
PKEY_USAGE_PERIOD_new,
POLICYINFO_free,
POLICYINFO_new,
POLICYQUALINFO_free,
POLICYQUALINFO_new,
POLICY_CONSTRAINTS_free,
POLICY_CONSTRAINTS_new,
POLICY_MAPPING_free,
POLICY_MAPPING_new,
PROFESSION_INFO_free,
PROFESSION_INFO_new,
PROFESSION_INFOS_free,
PROFESSION_INFOS_new,
PROXY_CERT_INFO_EXTENSION_free,
PROXY_CERT_INFO_EXTENSION_new,
PROXY_POLICY_free,
PROXY_POLICY_new,
RSAPrivateKey_dup,
RSAPublicKey_dup,
RSA_OAEP_PARAMS_free,
RSA_OAEP_PARAMS_new,
RSA_PSS_PARAMS_free,
RSA_PSS_PARAMS_new,
SCRYPT_PARAMS_free,
SCRYPT_PARAMS_new,
SXNETID_free,
SXNETID_new,
SXNET_free,
SXNET_new,
TLS_FEATURE_free,
TLS_FEATURE_new,
TS_ACCURACY_dup,
TS_ACCURACY_free,
TS_ACCURACY_new,
TS_MSG_IMPRINT_dup,
TS_MSG_IMPRINT_free,
TS_MSG_IMPRINT_new,
TS_REQ_dup,
TS_REQ_free,
TS_REQ_new,
TS_RESP_dup,
TS_RESP_free,
TS_RESP_new,
TS_STATUS_INFO_dup,
TS_STATUS_INFO_free,
TS_STATUS_INFO_new,
TS_TST_INFO_dup,
TS_TST_INFO_free,
TS_TST_INFO_new,
USERNOTICE_free,
USERNOTICE_new,
X509_ALGOR_free,
X509_ALGOR_new,
X509_ATTRIBUTE_dup,
X509_ATTRIBUTE_free,
X509_ATTRIBUTE_new,
X509_CERT_AUX_free,
X509_CERT_AUX_new,
X509_CINF_free,
X509_CINF_new,
X509_CRL_INFO_free,
X509_CRL_INFO_new,
X509_CRL_dup,
X509_CRL_free,
X509_CRL_new,
X509_EXTENSION_dup,
X509_EXTENSION_free,
X509_EXTENSION_new,
X509_NAME_ENTRY_dup,
X509_NAME_ENTRY_free,
X509_NAME_ENTRY_new,
X509_NAME_dup,
X509_NAME_free,
X509_NAME_new,
X509_REQ_INFO_free,
X509_REQ_INFO_new,
X509_REQ_dup,
X509_REQ_free,
X509_REQ_new,
X509_REVOKED_dup,
X509_REVOKED_free,
X509_REVOKED_new,
X509_SIG_free,
X509_SIG_new,
X509_VAL_free,
X509_VAL_new,
X509_dup,
- ASN1 object utilities

=head1 SYNOPSIS

=for comment generic

 #include <openssl/asn1t.h>

 DECLARE_ASN1_FUNCTIONS(type)
 IMPLEMENT_ASN1_FUNCTIONS(stname)

 typedef struct ASN1_ITEM_st ASN1_ITEM;

 extern const ASN1_ITEM TYPE_it;
 TYPE *TYPE_new(void);
 TYPE *TYPE_dup(TYPE *a);
 void TYPE_free(TYPE *a);
 int TYPE_print_ctx(BIO *out, TYPE *a, int indent, const ASN1_PCTX *pctx);

=head1 DESCRIPTION

In the description below, I<TYPE> is used
as a placeholder for any of the OpenSSL datatypes, such as I<X509>.

The OpenSSL ASN1 parsing library templates are like a data-driven bytecode
interpreter.
Every ASN1 object as a global variable, TYPE_it, that describes the item
such as its fields.  (On systems which cannot export variables from shared
libraries, the global is instead a function which returns a pointer to a
static variable.

The macro DECLARE_ASN1_FUNCTIONS() is typically used in header files
to generate the function declarations.

The macro IMPLEMENT_ASN1_FUNCTIONS() is used once in a source file
to generate the function bodies.


TYPE_new() allocates an empty object of the indicated type.
The object returned must be released by calling TYPE_free().

TYPE_dup() copies an existing object.

TYPE_free() releases the object and all pointers and sub-objects
within it.

TYPE_print_ctx() prints the object B<a> on the specified BIO B<out>.
Each line will be prefixed with B<indent> spaces.
The B<pctx> specifies the printing context and is for internal
use; use NULL to get the default behavior.  If a print function is
user-defined, then pass in any B<pctx> down to any nested calls.

=head1 RETURN VALUES

TYPE_new() and TYPE_dup() return a pointer to the object or NULL on failure.

TYPE_print_ctx() returns 1 on success or zero on failure.

=head1 COPYRIGHT

Copyright 2016-2018 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
L<https://www.openssl.org/source/license.html>.

=cut