package Crypt::OpenSSL::PKCS10;

use 5.008000;
use strict;
use warnings;
require Exporter;

our @ISA = qw(Exporter);

# Items to export into callers namespace by default. Note: do not export
# names by default without a very good reason. Use EXPORT_OK instead.
# Do not simply export all your public functions/methods/constants.

# This allows declaration	use Crypt::OpenSSL::PKCS10 ':all';
# If you do not need this, moving things directly into @EXPORT or @EXPORT_OK
# will save memory.
our @NIDS = qw(
	NID_key_usage NID_subject_alt_name NID_netscape_cert_type NID_netscape_comment
	NID_ext_key_usage
);

our %EXPORT_TAGS = ( 
  'all'   => [ @NIDS ],
  'const' => [ @NIDS ],
);

our @EXPORT_OK = ( @{ $EXPORT_TAGS{'all'} } );

#our @EXPORT = qw(
	
#);

our $VERSION = '0.25';

require XSLoader;
XSLoader::load('Crypt::OpenSSL::PKCS10', $VERSION);

# Preloaded methods go here.

sub new_from_rsa {
    my $self = shift;
    my $rsa = shift;

    my $priv = $rsa->get_private_key_string();
    $self->_new_from_rsa($rsa, $priv);

}

1;
__END__

# ABSTRACT: Perl extension to OpenSSL's PKCS10 API.

=head1 NAME

Crypt::OpenSSL::PKCS10 - Perl extension to OpenSSL's PKCS10 API.

=head1 SYNOPSIS

  use Crypt::OpenSSL::PKCS10 qw( :const );
  
  my $req = Crypt::OpenSSL::PKCS10->new;
  $req->set_subject("/C=RO/O=UTI/OU=ssi");
  $req->add_ext(Crypt::OpenSSL::PKCS10::NID_key_usage,"critical,digitalSignature,keyEncipherment");
  $req->add_ext(Crypt::OpenSSL::PKCS10::NID_ext_key_usage,"serverAuth, nsSGC, msSGC, 1.3.4");
  $req->add_ext(Crypt::OpenSSL::PKCS10::NID_subject_alt_name,"email:steve@openssl.org");
  $req->add_custom_ext('1.2.3.3',"My new extension");
  $req->add_ext_final();
  $req->sign();
  $req->write_pem_req('request.pem');
  $req->write_pem_pk('pk.pem');
  print $req->get_pem_pubkey();
  print $req->pubkey_type();
  print $req->get_pem_req();

=head1 ABSTRACT

  Crypt::OpenSSL::PKCS10 - Perl extension to OpenSSL's PKCS10 API.

=head1 DESCRIPTION

Crypt::OpenSSL::PKCS10 provides the ability to create PKCS10 certificate requests using RSA key pairs.

=head1 Class Methods

=over

=item new

Create a new Crypt::OpenSSL::PKCS10 object by generating a new RSA key pair. There is one optional argument, the key size,
which has the default value of 1024 if omitted.

=item new_from_rsa( $rsa_object )

Create a new Crypt::OpenSSL::PKCS10 object by using key information from a Crypt::OpenSSL::RSA object. Here is an example:

  my $rsa = Crypt::OpenSSL::RSA->generate_key(512);
  my $req = Crypt::OpenSSL::PKCS10->new_from_rsa($rsa);

OpenSSL 3.0 has deprecated the RSA object which Crypt::OpenSSL::RSA creates.  new_from_rsa() is now a perl sub which obtains the private key as a string that is also passed to the _new_from_rsa() XS function.

=item new_from_file( $filename )

Create a new Crypt::OpenSSL::PKCS10 object by reading the request and key information from a PEM formatted file. Here is an example:

  my $req = Crypt::OpenSSL::PKCS10->new_from_file("CSR.csr");

=back

=head1 Instance Methods

=over 2

=item set_subject($subject, [ $utf8 ])

Sets the subject DN of the request.
Note: $subject is expected to be in the format /type0=value0/type1=value1/type2=... where characters may be escaped by \.
If $utf8 is non-zero integer, $subject is interpreted as UTF-8 string.

=item add_ext($nid, $extension)

Adds a new extension to the request. The first argument $nid is one of the exported constants (see below).
The second one $extension is a string (for more info read C<openssl(3)>).

  $req->add_ext(Crypt::OpenSSL::PKCS10::NID_key_usage,"critical,digitalSignature,keyEncipherment");
  $req->add_ext(Crypt::OpenSSL::PKCS10::NID_ext_key_usage,"serverAuth, nsSGC, msSGC, 1.3.4");
  $req->add_ext(Crypt::OpenSSL::PKCS10::NID_subject_alt_name,"email:steve@openssl.org");

=item add_custom_ext($oid, $desc)

Adds a new custom extension to the request. The value is added as a text string, using ASN.1 encoding rules inherited from the Netscape Comment OID. 

  $req->add_custom_ext('1.2.3.3',"My new extension");

=item add_custom_ext_raw($oid, $bytes)

Adds a new custom extension to the request. The value is added as a raw DER octet string. Use this if you are packing your own ASN.1 structures and need to set the extension value directly.

  $req->add_custom_ext_raw($oid, pack('H*','1E06006100620063')) # BMPString 'abc'

=item add_ext_final()

This must be called after all extensions has been added. It actually copies the extension stack to request structure.

  $req->add_ext(Crypt::OpenSSL::PKCS10::NID_subject_alt_name,"email:my@email.org");
  $req->add_ext_final();

=item sign()

This adds the signature to the PKCS10 request.

  $req->sign();

=item pubkey_type()

Returns the type of the PKCS10 public key - one of (rsa|dsa|ec).

  $req->pubkey_type();

=item get_pubkey()

Returns the PEM encoding of the PKCS10 public key.

  $req->get_pubkey();

=item get_pem_req()

Returns the PEM encoding of the PKCS10 request.

  $req->get_pem_req();

=item write_pem_req($filename)

Writes the PEM encoding of the PKCS10 request to a given file.

  $req->write_pem_req('request.pem');

=item get_pem_pk()

Returns the PEM encoding of the private key.

  $req->get_pem_pk();

=item write_pem_pk($filename)

Writes the PEM encoding of the private key to a given file.

  $req->write_pem_pk('request.pem');

=item subject()

returns the subject of the PKCS10 request

  $subject = $req->subject();

=item keyinfo()

returns the human readable info about the key of the PKCS10 request

  $keyinfo = $req->keyinfo();

=back

=head2 EXPORT

None by default.

On request:

	NID_key_usage NID_subject_alt_name NID_netscape_cert_type NID_netscape_comment
	NID_ext_key_usage

=head1 BUGS

If you destroy $req object that is linked to a Crypt::OpenSSL::RSA object, the RSA private key is also freed, 
thus you can't use latter object anymore. Avoid this:
  
  my $rsa = Crypt::OpenSSL::RSA->generate_key(512);
  my $req = Crypt::OpenSSL::PKCS10->new_from_rsa($rsa);
  undef $req;
  print $rsa->get_private_key_string();

=head1 SEE ALSO

C<Crypt::OpenSSL::RSA>, C<Crypt::OpenSSL::X509>.

=head1 AUTHOR

JoNO, E<lt>jonozzz@yahoo.comE<gt>

=head1 COPYRIGHT AND LICENSE

Copyright (C) 2006 by JoNO

This library is free software; you can redistribute it and/or modify
it under the same terms as Perl itself, either Perl version 5.8.2 or,
at your option, any later version of Perl 5 you may have available.


=cut