.\"	$OpenBSD: GENERAL_NAME_new.3,v 1.2 2016/12/25 22:15:10 schwarze Exp $
.\"
.\" Copyright (c) 2016 Ingo Schwarze <schwarze@openbsd.org>
.\"
.\" Permission to use, copy, modify, and distribute this software for any
.\" purpose with or without fee is hereby granted, provided that the above
.\" copyright notice and this permission notice appear in all copies.
.\"
.\" THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
.\" WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
.\" MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
.\" ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
.\" WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
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.\" OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
.\"
.Dd $Mdocdate: December 25 2016 $
.Dt GENERAL_NAME_NEW 3
.Os
.Sh NAME
.Nm GENERAL_NAME_new ,
.Nm GENERAL_NAME_free ,
.Nm GENERAL_NAMES_new ,
.Nm GENERAL_NAMES_free ,
.Nm EDIPARTYNAME_new ,
.Nm EDIPARTYNAME_free ,
.Nm OTHERNAME_new ,
.Nm OTHERNAME_free
.Nd names for use in X.509 extensions
.Sh SYNOPSIS
.In openssl/x509v3.h
.Ft GENERAL_NAME *
.Fn GENERAL_NAME_new void
.Ft void
.Fn GENERAL_NAME_free "GENERAL_NAME *name"
.Ft GENERAL_NAMES *
.Fn GENERAL_NAMES_new void
.Ft void
.Fn GENERAL_NAMES_free "GENERAL_NAMES *names"
.Ft EDIPARTYNAME *
.Fn EDIPARTYNAME_new void
.Ft void
.Fn EDIPARTYNAME_free "EDIPARTYNAME *name"
.Ft OTHERNAME *
.Fn OTHERNAME_new void
.Ft void
.Fn OTHERNAME_free "OTHERNAME *name"
.Sh DESCRIPTION
Even though the X.501
.Vt Name
documented in
.Xr X509_NAME_new 3
is a complicated multi-layered structure, it is very rigid and not
flexible enough to represent various entities that many people want
to use as names in certificates.
For that reason, X.509 extensions use the X.509
.Vt GeneralName
wrapper structure rather than using the X.501
.Vt Name
structure directly, at the expense of adding one or two additional
layers of indirection.
.Pp
.Fn GENERAL_NAME_new
allocates and initializes an empty
.Vt GENERAL_NAME
object, representing the ASN.1
.Vt GeneralName
structure defined in RFC 5280 section 4.2.1.6.
It can for example hold an
.Vt X509_name
object, an IP address, a DNS host name, a uniform resource identifier,
an email address, or an
.Vt EDIPARTYNAME
or
.Vt OTHERNAME
object described below.
.Fn GENERAL_NAME_free
frees
.Fa name .
.Pp
.Fn GENERAL_NAMES_new
allocates and initializes an empty
.Vt GENERAL_NAMES
object, which is a
.Vt STACK_OF(GENERAL_NAME)
and represents the ASN.1
.Vt GeneralNames
structure defined in RFC 5280 section 4.2.1.6.
It is used by extension structures that can contain multiple names,
for example key identifier, alternative name, and distribution point
extensions.
.Fn GENERAL_NAMES_free
frees
.Fa names .
.Pp
.Fn EDIPARTYNAME_new
allocates and initializes an empty
.Vt EDIPARTYNAME
object, representing the ASN.1
.Vt EDIPartyName
structure defined in RFC 5280 section 4.2.1.6, where
.Dq EDI
stands for
.Dq electronic data identifier .
It can hold two strings, the name itself and the name of the authority
that assigned that name.
.Fn EDIPARTYNAME_free
frees
.Fa name .
.Pp
.Fn OTHERNAME_new
allocates and initializes an empty
.Vt OTHERNAME
object, representing the ASN.1
.Vt OtherName
structure defined in RFC 5280 section 4.2.1.6.
It can hold data of any
.Vt ASN1_TYPE
together with a type identifier.
.Fn OTHERNAME_free
frees
.Fa name .
.Sh RETURN VALUES
.Fn GENERAL_NAME_new ,
.Fn GENERAL_NAMES_new ,
.Fn EDIPARTYNAME_new ,
and
.Fn OTHERNAME_new
return a new
.Vt GENERAL_NAME ,
.Vt GENERAL_NAMES ,
.Vt EDIPARTYNAME ,
or
.Vt OTHERNAME
object or
.Dv NULL
if an error occurs.
.Sh SEE ALSO
.Xr X509_EXTENSION_new 3 ,
.Xr X509_NAME_new 3
.Sh STANDARDS
RFC 5280: Internet X.509 Public Key Infrastructure Certificate and
Certificate Revocation List (CRL) Profile,
section 4.2: Certificate Extensions