.\"	$OpenBSD: d2i_GENERAL_NAME.3,v 1.1 2016/12/28 20:36:33 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 28 2016 $
.Dt D2I_GENERAL_NAME 3
.Os
.Sh NAME
.Nm d2i_GENERAL_NAME ,
.Nm i2d_GENERAL_NAME ,
.Nm d2i_GENERAL_NAMES ,
.Nm i2d_GENERAL_NAMES ,
.Nm d2i_EDIPARTYNAME ,
.Nm i2d_EDIPARTYNAME ,
.Nm d2i_OTHERNAME ,
.Nm i2d_OTHERNAME
.Nd decode and encode names for use in X.509 extensions
.Sh SYNOPSIS
.In openssl/x509v3.h
.Ft GENERAL_NAME *
.Fo d2i_GENERAL_NAME
.Fa "GENERAL_NAME **val_out"
.Fa "const unsigned char **der_in"
.Fa "long length"
.Fc
.Ft int
.Fo i2d_GENERAL_NAME
.Fa "GENERAL_NAME *val_in"
.Fa "unsigned char **der_out"
.Fc
.Ft GENERAL_NAMES *
.Fo d2i_GENERAL_NAMES
.Fa "GENERAL_NAMES **val_out"
.Fa "const unsigned char **der_in"
.Fa "long length"
.Fc
.Ft int
.Fo i2d_GENERAL_NAMES
.Fa "GENERAL_NAMES *val_in"
.Fa "unsigned char **der_out"
.Fc
.Ft EDIPARTYNAME *
.Fo d2i_EDIPARTYNAME
.Fa "EDIPARTYNAME **val_out"
.Fa "const unsigned char **der_in"
.Fa "long length"
.Fc
.Ft int
.Fo i2d_EDIPARTYNAME
.Fa "EDIPARTYNAME *val_in"
.Fa "unsigned char **der_out"
.Fc
.Ft OTHERNAME *
.Fo d2i_OTHERNAME
.Fa "OTHERNAME **val_out"
.Fa "const unsigned char **der_in"
.Fa "long length"
.Fc
.Ft int
.Fo i2d_OTHERNAME
.Fa "OTHERNAME *val_in"
.Fa "unsigned char **der_out"
.Fc
.Sh DESCRIPTION
These functions decode and encode names that can be used in X.509
extensions.
For details about the semantics, examples, caveats, and bugs, see
.Xr ASN1_item_d2i 3 .
.Pp
.Fn d2i_GENERAL_NAME
and
.Fn i2d_GENERAL_NAME
decode and encode an ASN.1
.Vt GeneralName
structure defined in RFC 5280 section 4.2.1.6.
.Pp
.Fn d2i_GENERAL_NAMES
and
.Fn i2d_GENERAL_NAMES
decode and encode an ASN.1
.Vt GeneralNames
structure defined in RFC 5280 section 4.2.1.6.
.Pp
.Fn d2i_EDIPARTYNAME
and
.Fn i2d_EDIPARTYNAME
decode and encode an ASN.1
.Vt EDIPartyName
structure defined in RFC 5280 section 4.2.1.6.
.Pp
.Fn d2i_OTHERNAME
and
.Fn i2d_OTHERNAME
decode and encode an ASN.1
.Vt OtherName
structure defined in RFC 5280 section 4.2.1.6.
.Sh RETURN VALUES
.Fn d2i_GENERAL_NAME ,
.Fn d2i_GENERAL_NAMES ,
.Fn d2i_EDIPARTYNAME ,
and
.Fn d2i_OTHERNAME
return a
.Vt GENERAL_NAME ,
.Vt GENERAL_NAMES ,
.Vt EDIPARTYNAME ,
or
.Vt OTHERNAME
object, respectively, or
.Dv NULL
if an error occurs.
.Pp
.Fn i2d_GENERAL_NAME ,
.Fn i2d_GENERAL_NAMES ,
.Fn i2d_EDIPARTYNAME ,
and
.Fn i2d_OTHERNAME
return the number of bytes successfully encoded or a negative value
if an error occurs.
.Sh SEE ALSO
.Xr ASN1_item_d2i 3 ,
.Xr d2i_X509_NAME 3 ,
.Xr GENERAL_NAME_new 3 ,
.Xr X509_EXTENSION_new 3
.Sh STANDARDS
RFC 5280: Internet X.509 Public Key Infrastructure Certificate and
Certificate Revocation List (CRL) Profile,
section 4.2: Certificate Extensions