Write GENERAL_NAME_new(3) manual page from scratch - as if plain X.501

Name structures weren't already complicated enough, see X509_NAME_new(3).
All these functions are listed in <openssl/x509v3.h>
and in OpenSSL doc/man3/X509_dup.pod.
OpenSSL documentation specifies the wrong header file.

2 files changed, 138 insertions, 1 deletions

diff --git a/src/lib/libcrypto/man/GENERAL_NAME_new.3 b/src/lib/libcrypto/man/GENERAL_NAME_new.3
new file mode 100644
index 0000000000..c4e8fce764
--- /dev/null
+++ b/src/lib/libcrypto/man/GENERAL_NAME_new.3
@@ -0,0 +1,136 @@
+.\"     $OpenBSD: GENERAL_NAME_new.3,v 1.1 2016/12/23 00:40:16 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
+.\" ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+.\" OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+.\"
+.Dd $Mdocdate: December 23 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 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 GeneralName
+wrapper structure rather than using the X.501 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 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 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 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 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
diff --git a/src/lib/libcrypto/man/Makefile b/src/lib/libcrypto/man/Makefile
index d76403010d..f3910f74dd 100644
--- a/src/lib/libcrypto/man/Makefile
+++ b/src/lib/libcrypto/man/Makefile
@@ -1,4 +1,4 @@
-# $OpenBSD: Makefile,v 1.89 2016/12/22 16:05:22 schwarze Exp $
+# $OpenBSD: Makefile,v 1.90 2016/12/23 00:40:16 schwarze Exp $
 
 .include <bsd.own.mk>
 
@@ -120,6 +120,7 @@ MAN=	\
         EVP_SealInit.3 \
         EVP_SignInit.3 \
         EVP_VerifyInit.3 \
+        GENERAL_NAME_new.3 \
         HMAC.3 \
         MD5.3 \
         OBJ_nid2obj.3 \