Document X509 name get and set functions.

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=head1 NAME

X509_get_subject_name, X509_set_subject_name, X509_get_issuer_name,

X509_set_issuer_name, X509_REQ_get_subject_name, X509_REQ_set_subject_name,

X509_CRL_get_issuer, X509_CRL_set_issuer_name - get and set issuer or

subject names.

=head1 SYNOPSIS

 #include <openssl/x509.h>

 X509_NAME *X509_get_subject_name(X509 *x);

 int X509_set_subject_name(X509 *x, X509_NAME *name);

 X509_NAME *X509_get_issuer_name(X509 *x);

 int X509_set_issuer_name(X509 *x, X509_NAME *name);

 X509_NAME *X509_REQ_get_subject_name(X509_REQ *req);

 int X509_REQ_set_subject_name(X509_REQ *req, X509_NAME *name);

 X509_NAME *X509_CRL_get_issuer(X509_CRL *crl);

 int X509_CRL_set_issuer_name(X509_CRL *x, X509_NAME *name);

=head1 DESCRIPTION

X509_get_subject_name() returns the subject name of certificate B<x>. The

returned value is an internal pointer which B<MUST NOT> be freed.

X509_set_subject_name() sets the issuer name of certificate B<x> to

B<name>. The B<name> parameter is copied internally and should be freed

up when it is no longer needed.

X509_get_issuer_name() and X509_set_issuer_name() are identical to

X509_get_subject_name() and X509_set_subject_name() except the get and

set the isssuer name of B<x>.

Similarly X509_REQ_get_subject_name(), X509_REQ_set_subject_name(),

 X509_CRL_get_issuer() and X509_CRL_set_issuer_name() get or set the subject

or issuer names of certifcate requests of CRLs respectively.

=head1 RETURN VALUES

X509_get_subject_name(), X509_get_issuer_name(), X509_REQ_get_subject_name()

and X509_CRL_get_issuer() return an B<X509_NAME> pointer.

X509_set_subject_name(), X509_set_issuer_name(), X509_REQ_set_subject_name()

and X509_CRL_set_issuer_name() return 1 for success and 0 for failure.

=head1 HISTORY

X509_get_subject_name(), X509_set_subject_name() and X509_get_issuer_name(),

X509_set_issuer_name(), X509_REQ_set_subject_name() and

X509_CRL_set_issuer_name() are avaiable in all versions of OpenSSL.

X509_REQ_get_subject_name() is a function in OpenSSL 1.1.0 and a macro in

earlier versions.

X509_CRL_get_issuer() is a function in OpenSSL 1.1.0. It was first added

to OpenSSL 1.0.0 as a macro.

=head1 SEE ALSO

L<d2i_X509(3)>,

L<ERR_get_error(3)>, L<d2i_X509(3)>

L<X509_CRL_get0_by_serial(3)>,

L<X509_get0_signature(3)>,

L<X509_get_ext_d2i(3)>,

L<X509_get_extension_flags(3)>,

L<X509_get_pubkey(3)>,

L<X509_NAME_add_entry_by_txt(3)>,

L<X509_NAME_ENTRY_get_object(3)>,

L<X509_NAME_get_index_by_NID(3)>,

L<X509_NAME_print_ex(3)>,

L<X509_new(3)>,

L<X509_sign(3)>,

L<X509V3_get_d2i(3)>,

L<X509_verify_cert(3)>

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