File Coverage

blib/lib/IO/EPP/Base.pm

Criterion	Covered	Total	%
statement	763	1071	71.2
branch	327	674	48.5
condition	96	186	51.6
subroutine	55	62	88.7
pod	49	54	90.7
total	1290	2047	63.0

package IO::EPP::Base;

=encoding utf8

=head1 NAME

IO::EPP::Base

=head1 SYNOPSIS

    use Data::Dumper;
    use IO::EPP::Base;

    sub make_request {
        my ( $action, $params ) = @_;

        unless ( $params->{conn} ) {
            # need to connect

            my %sock_params = (
                PeerHost        => 'epp.example.com',
                PeerPort        => 700,
                SSL_key_file    => 'key.pem',
                SSL_cert_file   => 'cert.pem',
                Timeout         => 30,
            );

            $params->{user} = 'login';
            $params->{pass} = 'xxxxx';

            $params->{sock_params} = \%sock_params;

            $params->{test_mode} = 1; # use emulator

            # $params->{no_log} = 1; # 1 if no logging

            # enter a name if you need to specify a file for the log
            # $params->{log_name} = '/var/log/comm_epp_example.log';

            # use our function for logging
            $params->{log_fn} = sub { print "epp.example.com logger:\n$_[0]\n" };
        }

        return IO::EPP::Base::make_request( $action, $params );
    }

    my ( $answ, $msg, $conn_obj ) = make_request( 'check_domains', { domains => [ 'xyz.com', 'com.xyz', 'reged.xyz' ] } );

    print Dumper $answ;

Result:

    $VAR1 = {
          'msg' => 'Command completed successfully.',
          'xyz.com' => {
                         'avail' => '1'
                       },
          'reged.xyz' => {
                           'reason' => 'in use',
                           'avail' => '0'
                         },
          'code' => '1000',
          'com.xyz' => {
                         'avail' => '1'
                       }
        };
}

=head1 DESCRIPTION

Module for common EPP-functions, without extension (dnssec only).

The module can be used to work with any provider,
if the requests do not use extensions and the provider does not have its own features

It has two options: using a separate function call or working as an object

=cut

use Digest::MD5 qw(md5_hex);
use Time::HiRes qw(time);
use IO::Socket;
use IO::Socket::SSL;

use strict;
use warnings;

# common chunks for all standard queries
our $epp_head = '
';
our $epp_cont_urn =
'xmlns:contact="urn:ietf:params:xml:ns:contact-1.0" xsi:schemaLocation="urn:ietf:params:xml:ns:contact-1.0 contact-1.0.xsd"';
our $epp_host_urn =
'xmlns:host="urn:ietf:params:xml:ns:host-1.0" xsi:schemaLocation="urn:ietf:params:xml:ns:host-1.0 host-1.0.xsd"';
our $epp_dom_urn  =
'xmlns:domain="urn:ietf:params:xml:ns:domain-1.0" xsi:schemaLocation="urn:ietf:params:xml:ns:domain-1.0 domain-1.0.xsd"';
our $epp_dnssec =
'xmlns:secDNS="urn:ietf:params:xml:ns:secDNS-1.1" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="urn:ietf:params:xml:ns:secDNS-1.1 secDNS-1.1.xsd"';


our %id = ( crID => 'creater', clID => 'owner', upID => 'updater', reID => 'requestors_id', acID => 'senders_id' );
our %dt = ( crDate => 'cre_date', upDate => 'upd_date', trDate => 'trans_date', exDate => 'exp_date', reDate => 'request_date', acDate => 'send_date'  );


=head1 FUNCTIONS

=head2 make_request

See L for description

An example of working with functions is presented in the synopsis

Work checked on CentralNic server

INPUT:

action name;

parameters of query

OUTPUT:

io::epp object

or, in list context:

( full answer with code and message, string with code and message, io::epp object )

An Example:

    my ( $answer, $message, $conn_object ) = make_request( 'hello', \%login_params );

A more complete example is found in L

=cut

sub make_request {
    my ( $action, $params ) = @_;

    my ( $self, $code, $msg, $answ );

    if ( !$params->{tld}  &&  $params->{dname} ) {
        ( $params->{tld} ) = $params->{dname} =~ /^[0-9a-z\-]+\.(.+)$/;
    }

    unless ( $params->{conn} ) {
        # Need greate obj and login
        ( $self, $code, $msg ) = IO::EPP::Base->new( $params );

        unless ( $code  and  $code == 1000 ) {
            goto END_MR;
        }
    }
    else {
        $self = $params->{conn};
    }

    $self->{critical_error} = '';

    if ( $self->can( $action ) ) {
        ( $answ, $code, $msg ) = $self->$action( $params );
    }
    else {
        $msg = "undefined command <$action>, request cancelled";
        $code = 0;
    }

END_MR:

    $msg .= '; ' . $self->{critical_error} if $self->{critical_error};

    my $full_msg = "code: $code\nmsg: $msg";

    $answ = {} unless $answ && ref $answ;

    $answ->{code} = $code;
    $answ->{msg}  = $msg;

    return wantarray ? ( $answ, $full_msg, $self ) : $answ;
}


=head2 gen_id

Gereration ID for contacts

INPUT:

no params

OUTPUT:

new id

=cut

sub gen_id {
    my @chars = ( 'a'..'z', '0'..'9' );

    return join '', map( { $chars[ int rand( scalar @chars ) ] } 1..12 );
}


=head2 gen_pw

Authinfo Generation

INPUT:

length of authInfo, default 16 symbols

OUTPUT:

new authInfo

=cut

sub gen_pw {
    my ( $pw_length ) = @_;

    $pw_length = 16  unless $pw_length;

    my $pw;

    my @chars = ( '0'..'9', 'A'..'Z', 'a'..'z', '!', '@', '$', '%', '*', '_', '.', ':', '-', '=', '+', '?', '#', ',', '"', "'" );

    for ( 0..32 ) {
        $pw = join '', map( { $chars[ int rand( scalar @chars ) ] } 1..$pw_length );

        # буквы, цифры и символы должны быть обязательно
        last if ( $pw =~ /\d/  and  $pw =~ /[A-Z]/  and  $pw =~ /[a-z]/  and  $pw =~ /[!\@\$\%\*_\.:-=\+\?#,"']/ );
    }

    return $pw;
}


# Generation transaction id

sub get_cltrid {
    return md5_hex( time() . $$ . rand(1000000) );
}


# recursive removal of utf8 flag

sub recursive_utf8_unflaged {
    my $root = shift;

    if ( ref $root eq 'HASH' ) {
        foreach my $k ( keys %$root ) {
            my $key = $k;
            utf8::decode( $key );
            utf8::decode( $key );
            utf8::encode( $key );
            # work if $root->{with_utf8_flag} ne $root->{without_utf8_flag}
            $root->{$key} = recursive_utf8_unflaged( delete $root->{$k} ) ;
        }
    }
    elsif ( ref $root eq 'ARRAY' ) {
        $_ = recursive_utf8_unflaged($_) foreach @$root;
    }
    elsif ( $root  &&  ref $root eq '' ) {
        utf8::decode( $root );
        utf8::decode( $root );
        utf8::encode( $root );
    }

    return $root;
}

# clear date-time

sub cldate {
    my ( $dt ) = @_;

    $dt =~ s/T/ /;
    $dt =~ s/\.\d+Z$//;
    $dt =~ s/Z$//;

    return $dt;
}


=head1 METHODS

=head2 new

Create new IO::EPP object, аutomatically connects to the provider and logins.

Example of a call

    # Parameters for IO::Socket::SSL
    my %sock_params = (
        PeerHost => 'epp.example.com',
        PeerPort => 700,
        SSL_key_file  => $path_to_ssl_key_file,
        SSL_cert_file => $path_to_ssl_cert_file,
        Timeout  => 30,
    );

    # initialization of an object, during which login is called
    my $o = IO::EPP::Base->new( {
        sock_params => \%sock_params,
        user        => $login_name,
        pass        => $login_password,
        log_name    => '/var/log/comm_epp_registry_name',
    } );

    # call check of domains
    my ( $answ, $code, $msg ) = $o->check_domains( { domains => [ 'kalinka.realty' ] } );

    undef $o; # call logout() и DESTROY() of object

INPUT:

package name, parameters.

Connection parameters:

C        – login;

C        – password;

C         – zone for providers that have a binding in it, for example, verisign;

C      – server name if the registry has different servers with different extensions, for example, pir/afilias for afilias;

C – hashref with L parameters;

C   – use a real connection or registry emulator.

Parameters for logging:

C   – do not write anything to the log;

C – write log in this file, not in STDOUT;

C   – ref on functions to write to the log.

OUTPUT:

io::epp object or array ( object, login code, login message )

If the connection or authorization failed, the response will contain zero instead of an object

=cut

sub new {
    my ( $package, $params ) = @_;

    my ( $self, $code, $msg );

    my $sock;

    my $sock_params = delete $params->{sock_params};

    my $test = delete $params->{test_mode};

    if ( $test ) {
        $sock = $sock_params->{PeerHost} . ':' . $sock_params->{PeerPort};
    }
    else {
        $sock = IO::Socket::SSL->new(
            PeerPort => 700,
            Timeout  => 30,
            %{$sock_params},
        );
    }

    unless ( $sock ) {
        $msg = "can not connect";
        $code = 0;

        goto ERR;
    }

    $self = bless {
        sock           => $sock,
        user           => delete $params->{user},
        tld            => $params->{tld} || '',
        server         => delete $params->{server} || '',
        #launch         => $params->{launch} || '',
        log_name       => delete $params->{log_name},
        log_fn         => delete $params->{log_fn},
        no_log         => delete $params->{no_log} || 0,
        test           => $test,
        critical_error => undef,
    }, $package;

    $self->set_urn();

    $self->set_log_vars( $params );

    $self->epp_log( "Connect to $$sock_params{PeerHost}:$$sock_params{PeerPort}\n" );

    my $hello = $self->req();

    if ( !$hello  ||  $self->{critical_error} ) {
        $msg = "Can't get greeting";
        $msg .= '; ' . $self->{critical_error} if $self->{critical_error};
        $code = 0;

        goto ERR;
    }

    my ( $svcs, $extension ) = ( '', '' );

    if ( ref( $self ) =~ /IO::EPP::Base/ ) {
        if ( $hello =~ /urn:ietf:params:xml:ns:contact-1.0/ ) {
            $svcs .= '
    urn:ietf:params:xml:ns:contact-1.0';
        }
        if ( $hello =~ /urn:ietf:params:xml:ns:domain-1.0/ ) {
            $svcs .= '
    urn:ietf:params:xml:ns:domain-1.0';
        }
        if ( $hello =~ /urn:ietf:params:xml:ns:host-1.0/ ) {
            # drs.ua not want host
            $svcs .= '
    urn:ietf:params:xml:ns:host-1.0';
        }

        if ( $hello =~ /urn:ietf:params:xml:ns:secDNS-1.1/ ) {
            $extension .= '
     urn:ietf:params:xml:ns:secDNS-1.1';
        }
    }

    # have a connection, can log in
    my ( undef, $c, $m ) = $self->login( delete $params->{pass}, $svcs, $extension ); # no save passwd in object

    if ( $c  and  $c == 1000 ) {
        return wantarray ? ( $self, $c, $m ) : $self;
    }

    $msg = ( $m || '' ) . $self->{critical_error};
    $code = $c || 0;

ERR:
    return wantarray ? ( 0, $code, $msg ) : 0;
}


sub set_urn {
    $_[0]->{urn} = {
        head => $IO::EPP::Base::epp_head,
        cont => $IO::EPP::Base::epp_cont_urn,
        host => $IO::EPP::Base::epp_host_urn,
        dom  => $IO::EPP::Base::epp_dom_urn,
    };
}


# Set name for log

sub set_log_vars {
    my ( $self, $params ) = @_;

    $self->{log_name} = delete $params->{log_name} if $params->{log_name};
    $self->{log_fn}   = delete $params->{log_fn}   if $params->{log_fn};
}


=head2 epp_log

Writes data to the log or calls the function specified when creating the object

By default, the log is written: date and time, pid of the process, name and body of the request:

    Thu Jan  1 01:00:00 1111
    pid: 12345
    check_domains request:





        xyz.comcom.xyzreged.xyz


      50df482a1e928a00fa0e7fce3fe68f0f



    Thu Feb  2 02:02:22 2222
    pid: 12345
    check_domains answer:




    Command completed successfully.


    xyz.com
    com.xyz
    reged.xyzin use

    50df482a1e928a00fa0e7fce3fe68f0fTEST-2979E52890117206AAA1639725F4E862




=cut

sub epp_log {
    my ( $self, $string ) = @_;

    return if $self->{no_log};

    $string = "pid: $$\n" . $string;

    if ( $self->{log_fn} ) {
        &{$self->{log_fn}}( $string );
    }
    elsif ( $self->{log_name} ) {
        my $fh;

        if ( $self->{log_fh} ) {
            $fh = $self->{log_fh};
        }
        else{
            open( $fh, '>>', $self->{log_name} ) or die "Can't open $self->{log_name}: $!\n";

            $self->{log_fh} = $fh;
        }

        print $fh scalar(localtime) . "\n$string\n\n"; # if `print( $self->{log_fh} $string );` that get error `(Missing operator before  $string?)`
    }
    else {
        print scalar(localtime) . "\n$string\n\n";
    }
}


=head2 req_test

Used instead of L in test mode

=cut

sub req_test {
    my ( $self, $out_data, $info ) = @_;

    require IO::EPP::Test::Base;

    $self->epp_log( "$info request:\n$out_data" ) if $out_data;

    my $answ;
    eval{
        $answ = IO::EPP::Test::Base::req( @_ );
        1;
    }
    or do {
        $self->{critical_error} = "$info req error: $@";
        return;
    };

    $self->epp_log( "$info answer:\n$answ" );

    return $answ;
}


=head2 req

Request to registry

INPUT:

C – body of request;

C – name of request for log.

OUTPUT:

answer from registry.

=cut

sub req {
    my ( $self, $out_data, $info ) = @_;

    $self->{critical_error} = '';

    $info ||= '';

    return $self->req_test( $out_data, $info ) if $self->{test};

    my $THRESHOLD = 100000000;

    if ( $out_data ) {
        my $d = $out_data;
        # Remove password, authinfo from log
        $d =~ s/[^<>]+<\/pw>/xxxxx<\/pw>/;

        $self->epp_log( "$info request:\n$d" );
    }

    my $in_data = '';
    my $start_time = time;

    eval{
        local $SIG{ALRM} = sub { die "connection timeout\n" };

        alarm 120;

        if ( $out_data ) {
            # https://rt.cpan.org/Ticket/Display.html?id=98368
            # https://rt.cpan.org/Ticket/Display.html?id=98372
            utf8::downgrade( $out_data );

            my $len = length( $out_data ) + 4;
            my $pk_data_size = pack( 'N', $len );

            my $a_out = $self->{sock}->print( $pk_data_size . $out_data );
            $self->{sock}->flush();

            die "data write failed" unless $a_out;
        };

        # header - 4 bytes Nxxx with size
        my $hdr;
        unless ( defined( $self->{sock}->read( $hdr, 4 ) ) ) {
            die "closed connection\n";
        }

        my $data_size = ( unpack( 'N', $hdr ) || 0 ) - 4;

        die "closed connection\n" if $data_size < 0;

        die "data length is zero\n" unless $data_size;

        die "data length is $data_size which exceeds $THRESHOLD\n" if $data_size > $THRESHOLD;

        # Read data block
        my $buf;
        my $wait_cnt = 0;

        while ( length( $in_data ) < $data_size ) {
            $buf = '';
            $self->{sock}->read( $buf, ( $data_size - length( $in_data ) ));

            if ( length( $buf ) == 0 ) {
                if ( $wait_cnt < 3 ) {
                    # part of the data may come with a long delay when saving the connection
                    # this problem is observed in corenic and drs
                    $wait_cnt++;
                    sleep 1;
                    redo;
                }
                else {
                    # it is likely that the socket has closed
                    last;
                }
            }

            $in_data .= $buf;
        }

        # recheck, because something could not reach or stop at \0
        my $l = length( $in_data );
        die "data read failed: readed $l, need $data_size\ndata: $in_data" if $l != $data_size;

        alarm 0;

        1;
    } or do {
        my $err = $@;

        alarm 0;

        my $req_time = sprintf( '%0.4f', time - $start_time );
        $self->epp_log( "req_time: $req_time\n$info req error: $err" );

        $self->{critical_error} = "req error: $err";

        return;
    };

    my $req_time = sprintf( '%0.4f', time - $start_time );
    $self->epp_log( "req_time: $req_time\n$info answer:\n$in_data" );

    return $in_data;
}


=head2 simple_request

Universal handler for simple answer

INPUT:

request body;

request name;

check or not epp poll, default is 0

OUTPUT:

answer, may contain the object's name, id, creation and/or expiration date, client-side transaction id, and registry id;

answer code;

answer message, if there is an error in the response, an additional reason for the error may be passed along with the message.

An Example:

    # answer for create_contact:

    {
        'msg' => 'Command completed successfully.',
        'cont_id' => 'sxsup8ehs000',
        'cre_date' => '2020-01-01 01:01:01',
        'cltrid' => 'd0a528a4816ea4e16c3f56e25bf11111',
        'code' => 1000,
        'svtrid' => 'CNIC-22E5B2CBBD6C04169AEC9228FB0677FA173D76487AF8BA8734AF3C11111'
    };

    # answer with error, "1.2.3.4 addr not found" is reason:

    {
        'msg' => 'Parameter value policy error; 1.2.3.4 addr not found',
        'cltrid' => 'd0e2a9c2af427264847b0a6e59b60000',
        'code' => 2306,
        'svtrid' => '4586654601-1579115463111'
    };

=cut

sub simple_request {
    my ( $self, $body, $info, $check_queue_msgs ) = @_;

    unless ( $body ) {
        return wantarray ? ( 0, 0, 'no query' ) : 0 ;
    }

    my $content = $self->req( $body, $info );

    if ( $content  &&  $content =~ // ) {
        my $code = $1 + 0;

        my $msg = '';
        if ( $content =~ /]*>(.+)<\/msg>.+\/result>/s ) {
            $msg = $1;
        }

        if ( $code == 1001  or  $code >= 2000 ) {
            # 1001 -- pendingAction
            # 2000+ - May be an addition to the error, It is the inventions of different providers
            my $reason = join( ';', $content =~ /]*>([^<>]+)<\/reason>/g );

            $msg .= "; " . $reason if $reason;

            my ( $xcp ) = $content =~ /([^<>]+)<\/oxrs:xcp>/;

            $msg .= "; " . $xcp if $xcp;

            my ( $text ) = $content =~ /([^<>]+)<\/text>.+\/result>/s;

            $msg .= "; " . $text if $text;
        }

        # And check epp poll
        my $queue_msgs = '';

        if ( $check_queue_msgs  and  $content =~ // ) {
            $queue_msgs = { count => $1 , id => $2 };
        }

        my $info = {};

        # dates
        foreach my $k ( keys %dt ) {
            if ( $content =~ m|<[a-z]+:$k>([^<>]+)| ) {
                $info->{$dt{$k}} = cldate( $1 );
            }
        }

        if ( $content =~ m{([^<>]+)} ) {
            $info->{cont_id} = $1;
        }

        if ( $content =~ m{<(host|domain):name>([^<>]+)} ) {
            my %r = ( host => 'ns', domain => 'dname' );

            $info->{$r{$1}} = $2;
        }

        # This is needed to monitor deferred actions at some providers
        ( $info->{cltrid} ) = $content =~ /([0-9A-Za-z\-]+)<\/clTRID>/;
        ( $info->{svtrid} ) = $content =~ /([0-9A-Za-z\-]+)<\/svTRID>/;

        return wantarray ? ( $info, $code, $msg, $queue_msgs ) : $info;
    }

    return wantarray ? ( 0, 0, 'empty answer' ) : 0 ;
}

=head2 login

Authorization on the server.
The function is automatically called from new.
A separate call is only needed to change the password.

INPUT:

password;

addition standard parameters (xxxxx-1.0);

extensions (yyyyyy-1.0);

new password if need.

OUTPUT: see L.

=cut

sub login {
    my ( $self, $pw, $svcs, $ext, $new_pw ) = @_;

    return ( 0, 0, 'no user'   ) unless $self->{user};
    return ( 0, 0, 'no passwd' ) unless $pw;

    $svcs ||= ''; # addition standard parameters
    $ext  ||= ''; # extension

    if ( $ext ) {
        $ext = "\n    $ext\n    ";
    }

    my $npw = '';
    if ( $new_pw ) {
        $npw = "\n   $new_pw";
    }

    my $cltrid = get_cltrid();

    my $body = <
$$self{urn}{head}


   $$self{user}
   $pw$npw

    1.0
    en

   $svcs$ext


  $cltrid


LOGIN

    return $self->simple_request( $body, 'login' );
}


=head2 hello

Get greeting, ping analog.

No input parameters.

Sample response:

    {
        'msg' => '

            CentralNic EPP server EPP.CENTRALNIC.COM
            2020-20-20T20:20:20.0Z

            1.0en
            urn:ietf:params:xml:ns:domain-1.0
            urn:ietf:params:xml:ns:contact-1.0
            urn:ietf:params:xml:ns:host-1.0

            urn:ietf:params:xml:ns:rgp-1.0
            urn:ietf:params:xml:ns:secDNS-1.1
            urn:ietf:params:xml:ns:idn-1.0
            urn:ietf:params:xml:ns:fee-0.4
            urn:ietf:params:xml:ns:fee-0.5
            urn:ietf:params:xml:ns:launch-1.0
            urn:ietf:params:xml:ns:regtype-0.1
            urn:ietf:params:xml:ns:auxcontact-0.1
            urn:ietf:params:xml:ns:artRecord-0.2
            http://www.nic.coop/contactCoopExt-1.0









            ',
        'code' => 1000
    };

=cut

sub hello {
    my ( $self ) = @_;

    my $body = <
$$self{urn}{head}


HELLO

    my $content = $self->req( $body, 'hello' );

    unless ( $content && $content =~ /greeting/ ) {
        return wantarray ? ( 0, 0, 'no greeting' ) : 0;
    }

    my $info = {
        code => 1000,
        msg  => $content,
    };

    return wantarray ? ( $info, 1000, $content ) : $info;
}


=head2 check_contacts

Check whether there are contacts with such IDs

INPUT:
params with key:
C -- arrayref on contact id list.

Request:

    my ( $answ, $msg ) = make_request( 'check_contacts', {  contacts => [ 'H1234567', 'nfjkrek-fre8fm' ] } );

    print Dumper $answ;

Answer:

    $VAR1 = {
          'msg' => 'Command completed successfully.',
          'nfjkrek-fre8fm' => {
                                'avail' => '1'
                              },
          'H1234567' => {
                          'avail' => '0'
                        },
          'code' => '1000'
        };

=cut

sub check_contacts {
    my ( $self, $params ) = @_;

    return ( 0, 0, 'no contacts' ) unless $params->{contacts}  &&  scalar( @{$params->{contacts}} );

    my $contacts = $params->{contacts};

    my $conts = '';

    foreach my $cont ( @$contacts ) {
        $conts .= "$cont";
    }

    my $ext = $$params{extension} || '';

    $ext = "\n  \n$ext  " if $ext;

    my $cltrid = get_cltrid();

    my $body = <
$$self{urn}{head}



    $conts

  $ext
  $cltrid


CHECKCONT

    my $content = $self->req( $body, 'check_contacts' );

    if ( $content =~ // ) {
        my $code = $1 + 0;

        my $msg = '';
        if ( $content =~ /]*>(.+)<\/msg>.+\/result>/s ) {
            $msg = $1;
        }

        my @aa = $content =~ /([^<>]+<\/contact:id>)/g;

        my %answ;
        foreach my $a ( @aa ) {
            if ( $a =~ /([^<>]+)<\/contact:id>/ ) {
                $answ{$2} = { avail => $1 };
            }
        }

        return wantarray ? ( \%answ, $code, $msg ) : \%answ;
    }

    return wantarray ? ( 0, 0, 'empty answer' ) : 0 ;
}

=head2 cont_to_xml

Covertor contact user date to epp xml

for create/update_contact functions

=cut

sub cont_to_xml {
    my ( $self, $params ) = @_;

    unless ( $$params{'int'}  &&  $$params{'loc'} ) {
        # Set default is 'int'
        foreach my $f ( 'name', 'first_name', 'last_name', 'patronymic', 'family_name', 'company', 'addr', 'city', 'state', 'postcode', 'country_code' ) {
            $$params{'int'}{$f} = delete $$params{$f} if defined $$params{$f};
        }
    }

    my $postalinfo = '';
    foreach my $type ( 'int', 'loc' ) { # legal - in children modules
        next unless $$params{$type};

        # need_name=1 for creation - always, for update:
        # According to the standard at change of id the name does not change ( https://tools.ietf.org/html/rfc5733#page-23 ),
        # but some providers of it do not know,
        # at the same time, they have no documentation, but send all to read RFC, example, drs.ua
        my $name = '';
        if ( $$params{need_name} ) {
            if ( $$params{$type}{name} ) {
                $name = $$params{$type}{name};
            }
            else {
                $name = $$params{$type}{first_name} if $$params{$type}{first_name};

                if ( $$params{$type}{last_name}  &&  $$params{$type}{family_name} ) {
                    if ( $$params{$type}{last_name} ) {
                        $name .= ' ' if $name;
                        $name .= $$params{$type}{last_name};
                    }

                    if ( $$params{$type}{patronymic} ) {
                        $name .= ' ' if $name;
                        $name .= $$params{$type}{patronymic};
                    }

                    if ( $$params{$type}{family_name} ) {
                        $name .= ' ' if $name;
                        $name .= $$params{$type}{family_name};
                    }
                }
                else {
                    # family_name eq last_name
                    if ( $$params{$type}{patronymic} ) {
                        $name .= ' ' if $name;
                        $name .= $$params{$type}{patronymic};
                    }

                    if ( $$params{$type}{last_name}  ||  $$params{$type}{family_name} ) {
                        $name .= ' ' if $name;
                        $name .= $$params{$type}{last_name} || $$params{$type}{family_name};
                    }
                }

            }

            $name = "\n     $name" if $name;
        }

        my $org;
        if ( $$params{$type}{org} ) {
            $$params{$type}{org} =~ s/&/&/g;

            $org = "$$params{$type}{org}";
        }
        else {
            $org = '';
        }


        my $street = '';

        $$params{$type}{addr} = [ $$params{$type}{addr} ] unless ref $$params{$type}{addr};

        foreach my $s ( @{$$params{$type}{addr}} ) {
            $street .= "\n      " if $street;
            $street .= "$s";
        }

        my $sp   = $$params{$type}{'state'}  ? "$$params{$type}{state}"     : '' ;
        my $pc   = $$params{$type}{postcode} ? "$$params{$type}{postcode}"  : '' ;

        $postalinfo .= qq|
    $name
     $org

      $street
      $$params{$type}{city}
      $sp
      $pc
      $$params{$type}{country_code}

    |;
    }

    # voice / fax Extension  is disabled
    my $voice = '';
    $$params{phone} = [ $$params{phone} ] unless ref $$params{phone};
    foreach my $s ( @{$$params{phone}} ) {
        $voice .= "\n      " if $voice;
        $voice .= "$s";
    }

    my $fax = $$params{fax}      ? "$$params{fax}"    : '';

    my $email = '';
    $$params{email} = [ $$params{email} ] unless ref $$params{email};
    foreach my $s ( @{$$params{email}} ) {
        $email .= "\n      " if $email;
        $email .= "$s";
    }

    my $pw  = $$params{authinfo} ? "$$params{authinfo}" : '' ;

    $$params{pp_ext} ||= '';

    my $textcont = qq|$postalinfo
    $voice
    $fax
    $email

     $pw
    $$params{pp_ext}|;

    return $textcont;
}

=head2 create_contact_ext

Create contact extensions,
for overwriting in child classes

=cut

sub create_contact_ext {
    return '';
}

=head2 create_contact

Register a contact

INPUT:

Hash with parameters:

C – some providers create contact ID automatically;

C or C, C, C, C – full name in one field or first, last, patronymic, family names separately;

C – organization if necessary, some registries require a zero-length string, while others require C;

C – street, house, building, apartment;

C – city, town;

C – state, region, province, republic, optional field;

C – zip code;

C – two-character country code;

C – the phone number in international format;

C – usually only required for legal entities;

C;

C – the key is to transfer your contacts, but usually the contacts are transferred automatically together with a domain.

If only the C type of contacts is passed, it can be omitted.

OUTPUT: see L.

An Example, one type (by default this is C):

    ( $answ, $code, $msg ) = $conn->create_contact(
        {
            cont_id => '123qwerty',
            first_name => 'Test',
            last_name => 'Testov',
            org => 'Private Person',
            addr => 'Vagnera 11-22',
            city => 'Donetsk',
            state => 'Donetskaya',
            postcode => '83061',
            country_code => 'DN',
            phone => '+380.501234567',
            fax => '',
            email => '[e-mail]',
            authinfo => 'Q2+qqqqqqqqqqqqqqqqqqqqqqqqqq',
        },
    );

Contact with two types

    ( $answ, $code, $msg ) = $conn->create_contact(
        {
            cont_id => '123qwerty',
            int => {
                first_name => 'Test',
                last_name => 'Testov',
                org => 'Private Person',
                addr => 'Vagnera 11-22',
                city => 'Donetsk',
                state => 'Donetskaya',
                postcode => '83061',
                country_code => 'DN',
            },
            loc => {
                first_name => 'Тест',
                last_name => 'Тестов',
                org => 'Частное лицо',
                addr => 'Вагнера 11/22',
                city => 'Донецк',
                state => 'Донецкая обл.',
                postcode => '83061',
                country_code => 'DN',
            },
            phone => '+380.501234567',
            fax => '',
            email => '[e-mail]',
            authinfo => 'Q2+qqqqqqqqqqqqqqqqqqqqqqqqqq',
        }
    );

=cut

sub create_contact {
    my ( $self, $params ) = @_;

    return ( 0, 0, 'no params' ) unless ref $params;

    return ( 0, 0, 'no cont_id' ) unless $params->{cont_id};

    $params->{need_name} = 1;

    my $textcont = $self->cont_to_xml( $params );

    my $ext = $params->{extension} || '';

    $ext .= $self->create_contact_ext( $params );

    if ( $ext ) {
        $ext = "\n  \n$ext  ";
    }

    my $cltrid = get_cltrid();

    my $body = <
$$self{urn}{head}



    $$params{cont_id}$textcont

  $ext
  $cltrid


CRECONT

    return $self->simple_request( $body, 'create_contact' );
}


=head2 cont_from_xml

Covertor contact epp xml data to hash

for get_contact_info, overwritten in some child modules

=cut

sub cont_from_xml {
    my ( undef, $rdata ) = @_;

    my %cont;

    ( $cont{cont_id} ) = $rdata =~ /([^<>]+)<\/contact:id>/;

    ( $cont{roid} ) = $rdata =~ /([^<>]+)<\/contact:roid>/;

    my @atypes = ( 'int', 'loc' );
    foreach my $atype ( @atypes ) {
        my ( $postal ) = $rdata =~ /(.+?)<\/contact:postalInfo>/s;

        next unless $postal;

        ( $cont{$atype}{name} ) = $postal =~ /([^<>]+)<\/contact:name>/;

        if ( $rdata =~ /([^<>]*)<\/contact:org>/ ) {
            $cont{$atype}{org} = $1;
            $cont{$atype}{org} =~ s/&/&/g;
        }


        $cont{$atype}{addr} = join(', ', $postal =~ /([^<>]*)<\/contact:street>/ );

        ( $cont{$atype}{city} ) = $postal =~ /([^<>]*)<\/contact:city>/;

        ( $cont{$atype}{'state'} ) = $postal =~ /([^<>]*)<\/contact:sp>/;

        ( $cont{$atype}{postcode} ) = $postal =~ /([^<>]*)<\/contact:pc>/;

        ( $cont{$atype}{country_code} ) = $postal =~ /([A-Za-z]+)<\/contact:cc>/;
        $cont{$atype}{country_code} = uc $cont{$atype}{country_code};
    }

    $cont{phone}  = [ $rdata =~ /]*>([0-9+.]*)<\/contact:voice>/g ];

    $cont{fax} = [ $rdata =~ /]*>([0-9+.]*)<\/contact:fax>/g ];

    $cont{email} = [ $rdata =~ /([^<>]+)<\/contact:email>/g ];

    #
    my @ss = $rdata =~ //g;
    # No changes pending
    my @aa = $rdata =~ /]+>[^<>]+<\/contact:status>/g;
    if ( scalar @aa ) {
        foreach my $row ( @aa ) {
            if ( $row =~ /([^<>]+)<\/contact:status>/ ) {
                $cont{statuses}{$1} = $2;
            }
        }
    }
    else {
        $cont{statuses}{$_} = '+' for @ss;
    }

    if ( $rdata =~ /\s*(.+?)<\/contact:pw>/s ) {
        $cont{authinfo} = $1;
    }

    if ( $rdata =~ // ) {
        $cont{pp_flag} = $1 ? 0 : 1;
    }

    # owner, ...
    foreach my $k ( keys %id ) {
        if ( $rdata =~ /([^<>]+)<\/contact:$k>/ ) {
            $cont{$id{$k}} = $1;
        }
    }

    # dates
    foreach my $k ( keys %dt ) {
        if ( $rdata =~ /([^<>]+)<\/contact:$k>/ ) {
            $cont{$dt{$k}} = $1;

            $cont{$dt{$k}} =~ s/T/ /;
            $cont{$dt{$k}} =~ s/\.\d+Z$//;
            $cont{$dt{$k}} =~ s/Z$//;
        }
    }

    return \%cont;
}


=head2 get_contact_ext

Providers extension, replaced in provider modules

Returns an empty hashref here

=cut

sub get_contact_ext {
    return {};
}


=head2 get_contact_info

Get information on the specified contact

INPUT:

C – contact id

C – epp extensions in xml

An Example:

    my ( $answer, $code, $msg ) = $conn->get_contact_info( { cont_id => 'H12345' } );

    # $answer:

    {
        'owner' => 'H2220222',
        'int' => {
            'city' => 'Moscow',
            'org' => 'My Ltd',
            'country_code' => 'RU',
            'name' => 'Igor Igorev',
            'postcode' => '123456',
            'addr' => 'Igoreva str, 3',
            'state' => 'Igorevskya obl.'
        },
        'roid' => 'C2222888-CNIC',
        'cre_date' => '2012-12-12 12:12:12',
        'phone' => [
            '+7.4952334455'
        ],
        'pp_flag' => 1,
        'email' => [
            '[e-mail]'
        ],
        'upd_date' => '2012-12-12 12:12:12',
        'cont_id' => 'H12345',
        'fax' => [
            '+7.4952334455'
        ],
        'creater' => 'H2220222',
        'statuses' => {
            'serverDeleteProhibited' => '+',
            'serverTransferProhibited' => '+',
            'linked' => '+'
        }
    };

=cut

sub get_contact_info {
    my ( $self, $params ) = @_;

    return ( 0, 0, 'no cont_id' ) unless $$params{cont_id};

    my $ext = $$params{extension} || '';

    if ( $ext ) {
        $ext = "\n  \n$ext  ";
    }

    my $cltrid = get_cltrid();

    my $body = <
$$self{urn}{head}



    $$params{cont_id}

  $ext
  $cltrid


CONTINFO

    my $content = $self->req( $body, 'get_contact_info' );

    if ( $content =~ /result code=['"](\d+)['"]/ ) {
        my $rcode = $1 + 0;

        my $msg = '';
        if ( $content =~ /]*>(.+)<\/msg>.+\/result>/s ) {
            $msg = $1;
        }

        my $cont;

        # take the main part and disassemble
        if ( $content =~ /(.+)<\/resData>/s ) {
            $cont = $self->cont_from_xml( $1 );
        }
        else {
            return wantarray ? ( 0, $rcode, $msg ) : 0 ;
        }

        if ( $content =~ /(.+)<\/extension>/s ) {
            my $ext = $1;

            my $spec_ext = $self->get_contact_ext( $cont, $ext );
        }

        return wantarray ? ( $cont, $rcode, $msg ) : $cont;
    }

    return wantarray ? ( 0, 0, 'empty answer' ) : 0 ;
}

=head2 update_statuses_add

Part of update_* functions

=cut

sub update_statuses_add {
    my ( undef, $type, $statuses ) = @_;

    my $add = '';
    my %sts;

    if ( ref $statuses eq 'HASH' ) {
        %sts = %{$statuses};
    }
    elsif ( ref $statuses eq 'ARRAY' ) {
        $sts{$_} = '+' for @{$statuses};
    }

    foreach my $st ( keys %sts ) {
        if ( !$sts{$st}  or  $sts{$st} eq '+' ) {
            $add .= qq|     <$type:status s="$st"/>\n|;
        }
        else {
            $add .= qq|     <$type:status s="$st">$sts{$st}\n|;
        }
    }

    return $add;
}


=head2 update_statuses_rem

Part of update_* functions

=cut

sub update_statuses_rem {
    my ( undef, $type, $statuses ) = @_;

    my $rem = '';
    my @sts;

    if ( ref $statuses eq 'HASH' ) {
        @sts = keys %{$statuses};
    }
    elsif ( ref $statuses eq 'ARRAY' ) {
        @sts = @{$statuses};
    }

    $rem .= qq|     <$type:status s="$_"/>\n| foreach @sts;

    return $rem;
}

=head2 update_contact

To update contact information

INPUT:

params with keys:

C – contact id

C, C – only contact statuses can be added or deleted, , such as clientUpdateProhibited

C – modify data, see fields in L

OUTPUT: see L.

An Example, change data, one type (by default this is C):

    ( $answ, $code, $msg ) = $conn->update_contact(
        {
            cont_id => '123qwerty',
            chg => {
                first_name => 'Test',
                last_name => 'Testov',
                org => 'Private Person',
                addr => 'Vagnera 11-22',
                city => 'Donetsk',
                state => 'Donetskaya',
                postcode => '83061',
                country_code => 'DN',
                phone => '+380.501234567',
                fax => '',
                email => '[e-mail]',
                authinfo => 'Q2+qqqqqqqqqqqqqqqqqqqqqqqqqq',
            }
        },
    );

=cut

sub update_contact {
    my ( $self, $params ) = @_;

    return ( 0, 0, 'no params' ) unless ref $params;

    return ( 0, 0, 'no cont_id' ) unless $params->{cont_id};

    my ( $add, $rem, $chg ) = ( '', '', '' );

    if ( $$params{add} ) {
        if ( $$params{add}{statuses} ) {
            $add .= $self->update_statuses_add( 'contact', $$params{add}{statuses} );
        }
    }

    $add = "\n    \n$add    " if $add;

    if ( $$params{rem} ) {
        if ( $$params{rem}{statuses} ) {
            $rem .= $self->update_statuses_rem( 'contact', $$params{rem}{statuses} );
        }
    }

    $rem = "\n    \n$rem    " if $rem;

    if ( $$params{chg} ) {
        $chg .= $self->cont_to_xml( $$params{chg} );

        $chg =~ s/\n/\n  /g;
    }

    $chg = "\n    $chg   " if $chg;

    my $ext = $$params{extension} || '';

    $ext = "\n  \n$ext  " if $ext;

    my $cltrid = get_cltrid();

    my $body = <
$$self{urn}{head}



    $$params{cont_id}$add$rem$chg

  $ext
  $cltrid


UPDCONT

    return $self->simple_request( $body, 'update_contact' );
}


=head2 delete_contact

Delete the specified contact.
Usually this function is not needed because the registry itself deletes unused contacts.

INPUT:

params with keys:

C – contact id.

C – extensions for some providers, empty by default

OUTPUT: see L.

An Example:

    my ( $answ, $msg ) = make_request( 'delete_contact', { cont_id => 'H12345', %conn_params } );

=cut

sub delete_contact {
    my ( $self, $params ) = @_;

    return ( 0, 0, 'no params' ) unless ref $params;

    return ( 0, 0, 'no cont_id' ) unless $$params{cont_id};

    my $ext = $$params{extension} || '';

    $ext = "\n  \n$ext  " if $ext;

    my $cltrid = get_cltrid();

    my $body = <
$$self{urn}{head}



    $$params{cont_id}

  $ext
  $cltrid


DELCONT

    return $self->simple_request( $body, 'delete_contact' );
}


=head2 check_nss

Check that the nameserver is registered

INPUT:

params with keys:

C – list with nameservers

C – extensions for some providers, empty by default

OUTPUT: see L.

An Example:

    my ( $a, $m, $o ) = make_request( 'check_nss', { nss => [ 'ns99.cnic.com', 'ns1.godaddy.com' ] } );

    # answer:

    {
        'msg' => 'Command completed successfully.',
        'ns1.godaddy.com' => {
            'reason' => 'in use',
            'avail' => '0'
        },
        'ns99.cnic.com' => {
            'avail' => '1'
        },
        'code' => '1000'
    };

=cut

sub check_nss {
    my ( $self, $params ) = @_;

    return ( 0, 0, 'no nss' ) unless $params->{nss} && scalar( @{$params->{nss}} );

    my $hosts = '';

    foreach my $h ( @{$params->{nss}} ) {
        $hosts .= "$h";
    }

    my $ext = $$params{extension} || '';

    $ext = "\n  \n$ext  " if $ext;

    my $cltrid = get_cltrid();

    my $body = <
$$self{urn}{head}



    $hosts

  $ext
  $cltrid


CHECKNSS

    my $content = $self->req( $body, 'check_nss' );

    if ( $content =~ // ) {
        my $code = $1 + 0;

        my $msg = '';
        if ( $content =~ /]*>(.+)<\/msg>.+\/result>/s ) {
            $msg = $1;
        }

        my @aa = $content =~ /(.+?)<\/host:cd>/sg;

        my %answ;
        foreach my $a ( @aa ) {
            if ( $a =~ /([^<>]+)<\/host:name>/ ) {
                my $ns = $2;
                $answ{$ns} = { avail => $1 };

                if ( $a =~ /([^<>]+)<\/host:reason>/ ) {
                    $answ{$ns}{reason} = $1;
                }
            }
        }

        return wantarray ? ( \%answ, $code, $msg ) : \%answ;
    }

    return wantarray ? ( 0, 0, 'no answer' ) : 0;
}


=head2 create_ns

Registering a nameserver

INPUT:

params with keys:

C – name server

C – array with IP, IPv4 and IPv6,
IP must be specified only we register nameserver based on the domain of the same registry

C – extensions for some providers, empty by default

OUTPUT:
see L

An Example:

    my ( $h, $m, $o ) = make_request( 'create_ns', { ns => 'ns111.sssllll.info', %conn_params } );

    # check answer

    ( $a, $m ) = make_request( 'create_ns', { ns => 'ns222.ssslll.com', ips => ['1.2.3.4', 'fe80::aa00:bb11' ], conn => $o } );

    # check answer

=cut

sub create_ns {
    my ( $self, $params ) = @_;

    return ( 0, 0, 'no ns' ) unless $params->{ns};

    my $addrs = '';
    if ( $params->{ips}  and  ref( $params->{ips} ) eq 'ARRAY' ) {
        foreach my $ip ( @{$params->{ips}} ) {
            if ( $ip =~ /^\d+\.\d+\.\d+\.\d+$/ ) {
                $addrs .= '' . $ip . '';
            }
            else {
                $addrs .= '' . $ip . '';
            }
        }
    }

    my $ext = $$params{extension} || '';

    $ext = "\n  \n$ext  " if $ext;

    my $cltrid = get_cltrid();

    my $body = <
$$self{urn}{head}



    $$params{ns}$addrs

  $ext
  $cltrid


CREATENS

    return $self->simple_request( $body, 'create_ns' );
}


=head2 get_ns_info_rdata

Covertor NS xml resData data to hash.

Can be overwritten in a child module.

=cut

sub get_ns_info_rdata {
    my ( undef, $rdata ) = @_;

    my %ns;

    ( $ns{name} ) = $rdata =~ /([^<>]+)<\/host:name>/;
    $ns{name} = lc $ns{name};

    ( $ns{roid} ) = $rdata =~ /([^<>]+)<\/host:roid>/;

    #
    my @ss = $rdata =~ //g;
    # No changes pending
    my @aa = $rdata =~ /]+>[^<>]+<\/host:status>/g;
    if ( scalar @aa ) {
        foreach my $row ( @aa ) {
            if ( $row =~ /([^<>]+)<\/host:status>/ ) {
                $ns{statuses}{$1} = $2;
            }
        }
    }
    else {
        $ns{statuses}{$_} = '+' for @ss;
    }

    $ns{ips} = [ $rdata =~ /([0-9A-Fa-f.:]+)<\/host:addr>/g ];

    # owner, ...
    foreach my $k ( keys %id ) {
        if ( $rdata =~ /([^<>]+)<\/host:$k>/ ) {
            $ns{$id{$k}} = $1;
        }
    }

    # dates
    foreach my $k ( keys %dt ) {
        if ( $rdata =~ /([^<>]+)<\/host:$k>/ ) {
            $ns{$dt{$k}} = $1;

            $ns{$dt{$k}} =~ s/T/ /;
            $ns{$dt{$k}} =~ s/\.\d+Z$//;
            $ns{$dt{$k}} =~ s/Z$//;
        }
    }

    return \%ns;
}


=head2 get_ns_info

Get information about the specified nameserver

INPUT:

params with keys:

C – name server;

C – extensions for some providers, empty by default.

OUTPUT:

hash with ns data: statuses, dates, ips and other

C – the account where the name server is located;

C – the account where the name server was registered;

C – name server registration date;

C – name server id in the registry;

C – list of IP addresses, IPv4 and IPv6;

C – this status indicates that the name server is being used by some domain.

An Example:

    my ( $answer, $msg, $conn ) = make_request( 'get_ns_info', { ns => 'ns1.sss.ru.com', %conn_params  } );

    # answer:

    {
        'msg' => 'Command completed successfully.',
        'owner' => 'H2220222',
        'roid' => 'H370000-CNIC',
        'cre_date' => '2013-09-05 18:42:49',
        'name' => 'ns1.sss.ru.com',
        'ips' => [
            '2A00:3B00:0:0:0:0:0:25'
        ],
        'creater' => 'H2220222',
        'statuses' => {
            'ok' => '+',
            'linked' => '+'
        },
        'code' => '1000'
    };

=cut

sub get_ns_info {
    my ( $self, $params ) = @_;

    return ( 0, 0, 'no ns' ) unless $params->{ns};

    my $ext = $$params{extension} || '';

    $ext = "\n  \n$ext  " if $ext;

    my $cltrid = get_cltrid();

    my $body = <
$$self{urn}{head}



    $$params{ns}

  $ext
  $cltrid


NSINFO

    my $content = $self->req( $body, 'get_ns_info' );

    if ( $content =~ /result code=['"](\d+)['"]/ ) {
        my $rcode = $1 + 0;

        my $msg = '';
        if ( $content =~ /]*>(.+)<\/msg>.+\/result>/s ) {
            $msg = $1;
        }

        my $ns = {};

        # вытягиваем смысловую часть и парсим
        if ( $content =~ /(.+)<\/resData>/s ) {
            my $rdata = $1;

            $ns = $self->get_ns_info_rdata( $rdata );
        }

        return wantarray ? ( $ns, $rcode, $msg ) : $ns;
    }

    return 0;
}

=head2 update_ns

Change the data of the specified name server

INPUT

params with keys:

C – name server

C, C – adding or removing the name server parameters listed below:

C – IPv4 and IPv6 addresses;

C – clientUpdateProhibited and other client*;

C – change the server name, this is used to move the name server to a different domain.

C – some registries prohibit  passing an empty chg parameter – C<<  >>

C – extensions for some providers, empty by default

OUTPUT:
see L.

An Example

    my ( $answ, $msg, $conn ) = make_request( 'update_ns', {
        ns => 'ns1.sss.ru.com',
        rem => { ips => [ '2A00:3B00:0:0:0:0:0:25' ] },
        add => { ips => [ '176.99.13.11' ] },
        %conn_params,
    } );

    ( $answ, $msg ) = make_request( 'update_ns', {
        ns => 'ns1.sss.ru.com',
        chg => { new_name => 'ns1.sss.xyz' },
        conn => $conn,
    } );

=cut

sub update_ns {
    my ( $self, $params ) = @_;

    return ( 0, 0, 'no ns' ) unless $$params{ns};

    my $add = '';

    if ( $params->{add} ) {
        if ( $params->{add}{ips}  and  ref $params->{add}{ips} ) {
            foreach my $ip ( @{$params->{add}{ips}} ) {
                if ( $ip =~ /^\d+\.\d+\.\d+\.\d+$/ ) {
                    $add .= '     '.$ip."\n";
                }
                else {
                    $add .= '     '.$ip."\n";
                }
            }
        }

        if ( $params->{add}{statuses} ) {
            $add .= $self->update_statuses_add( 'host', $params->{add}{statuses} );
        }
    }

    if ( $add ) {
        $add = "\n$add    ";
    }
    else {
        $add = '';
    }

    my $rem = '';

    if ( $params->{rem} ) {
        if ( defined $params->{rem}{ips}  and  ref $params->{rem}{ips} ) {
            foreach my $ip ( @{$params->{rem}{ips}} ) {
                if ( $ip =~ /^\d+\.\d+\.\d+\.\d+$/ ) {
                    $rem .= '     '.$ip."\n";
                }
                else {
                    $rem .= '     '.$ip."\n";
                }
            }
        }

        if ( $params->{rem}{statuses} ) {
            $rem .= $self->update_statuses_rem( 'host', $params->{rem}{statuses} );
        }
    }

    if ( $rem ) {
        $rem = "\n$rem    ";
    }
    else {
        $rem = "";
    }

    my $chg = '';

    if ( $params->{chg} ) {
        if ( $params->{chg}{new_name} ) {
            $chg .= "     " . $$params{chg}{new_name} . "\n";
        }
    }

    if ( $chg ) {
        $chg = "\n$chg    \n";
    }
    elsif ( !$params->{no_empty_chg} ) {
        $chg = "";
    }

    my $ext = $$params{extension} || '';

    $ext = "\n  \n$ext  " if $ext;

    my $cltrid = get_cltrid();

    my $body = <
$$self{urn}{head}



    $$params{ns}
    $add
    $rem
    $chg

  $ext
  $cltrid


UPDATENS

    return $self->simple_request( $body, 'update_ns' );
}


=head2 delete_ns

Remove nameserver from the registry.

It is usually forbidden to delete a name server that has the C status.

INPUT:

params with keys:

C – name server;

C – extensions for some providers, empty by default.

OUTPUT:
see L.

An Example:

    my ( $answ, $msg ) = make_request( 'delete_ns', { ns => 'ns1.sss.ru.com', %conn_params } );

=cut

sub delete_ns {
    my ( $self, $params ) = @_;

    return ( 0, 0, 'no ns' ) unless $$params{ns};

    my $ext = $$params{extension} || '';

    $ext = "\n  \n$ext  " if $ext;

    my $cltrid = get_cltrid();

    my $body = <
$$self{urn}{head}



    $$params{ns}

  $ext
  $cltrid


DELNS

    return $self->simple_request( $body, 'delete_ns' );
}


=head2 check_domains_rdata

Parses resData in the registry response

Can be overwritten in a child module.

=cut

sub check_domains_rdata {
    my ( undef, $rdata ) = @_;

    my %domlist;

    my @aa = $rdata =~ /\s*([^<>]+<\/domain:name>(?:\s*[^<>]+<\/domain:reason>)?)\s*<\/domain:cd>/sg;

    foreach my $a ( @aa ) {
        if ( $a =~ /([^<>]+)<\/domain:name>/ ) {
            my $dm = lc($2);

            $domlist{$dm} = { avail => $1 }; # no utf8, puny only

            if ( $a =~ /([^<>]+)<\/domain:reason>/ ) {
                $domlist{$dm}{reason} = $1;
            }
        }
    }

    if ( $rdata =~ /claims<\/launch:phase>/ ) {
        # this is a call with an extension to get the key, if there is one
        if ( $rdata =~ /([0-9a-z.\-]+)<\/launch:name>\n?\s*([^<>]+)<\/launch:claimKey>/ ) {
            $domlist{ lc($2) }{claim} = { avail => $1, claimkey => $3 };
        }
    }

    if ( $rdata =~ /]+>(.+)<\/fee:chkData>/ ) {
        # this is a call with the extension draft-brown-epp-fees-02
        my $fee = $1;

        my @ff = $fee =~ /(.+)<\/fee:cd>/g;

        foreach my $f ( @ff ) {
            $f =~ /([0-9a-z\-\.])<\/fee:name>.*([0-9\.])<\/fee:fee>/;
            $domlist{ lc($1) }{fee} = { new => $2 }
        }
    }

    return \%domlist;
}

=head2 check_domains

Check that the domain is available for registration

INPUT:

params with keys:

C – list of domains to check;

C – extensions for some providers, empty by default.

OUTPUT:

hash with domains, each domain has an C parameter, if avail == 0, the C parameter is usually added

An Example

    my ( $answer, $code, $msg ) = $conn->check_domains( {
        tld => 'com',
        domains => [ 'qwerty.com', 'bjdwferbkre3jd0hf.net', 'xn--xx.com', 'hiebw.info' ],
    } );

    # answer:

    {
        'qwerty.com' => {
            'reason' => 'Domain exists',
            'avail' => '0'
        },
        'bjdwferbkre3jd0hf.net' => {
            'avail' => '1'
        },
        'hiebw.info' => {
            'reason' => 'Not an authoritative TLD',
            'avail' => '0'
        },
        'xn--xx.com' => {
            'reason' => 'Invalid punycode encoding',
            'avail' => '0'
        }
    };

=cut

sub check_domains {
    my ( $self, $params ) = @_;

    return ( 0, 0, 'no domains' ) unless $params->{domains} && scalar( @{$params->{domains}} );

    my $dms = '';

    foreach my $dm ( @{$params->{domains}} ) {
        $dms .= "$dm";
    }

    my $ext = $$params{extension} || '';

    $ext = "\n  \n$ext  " if $ext;

    my $cltrid = get_cltrid();

    my $body = <
$$self{urn}{head}



    $dms

  $ext
  $cltrid


CHECKDOMS

    my $answ = $self->req( $body, 'check_domains' );

    my ( $rcode, $msg ) = ( 0, '' );

    if ( $answ  and  $answ =~ /
        $rcode = $1 + 0;

        if ( $answ =~ /]*>([^<>]+)<\/msg>/ ) {
            $msg = $1;
        }

        if ( $answ =~ /(.+)<\/resData>/s ) {
            my $domlist = $self->check_domains_rdata( $1 );

            return wantarray ? ( $domlist, $rcode, $msg ) : $domlist;
        }
    }

    return wantarray ? ( 0, $rcode, $msg ) : 0;
}


=head2 create_domain_nss

Generating a list of ns-s for domain registration.

Can be overwritten in a child module.

=cut

sub create_domain_nss {
    my ( $self, $params ) = @_;

    my $nss = '';

    foreach my $ns ( @{$params->{nss}} ) {
        $nss .= "     $ns\n";
    }

    $nss = "\n    \n$nss    " if $nss;

    return $nss;
}


=head2 create_domain_authinfo

authinfo block for domain registration.

Can be overwritten in a child module.

=cut

sub create_domain_authinfo {
    my ( $self, $params ) = @_;

    # Some providers require an empty authinfo, but no
    if ( exists $params->{authinfo} ) {
        return "\n    \n     $$params{authinfo}\n    ";
    }

    return "\n    \n     \n    ";
}


=head2 create_domain_ext

Block with the DNSSEC extension for domain registration

Can be overwritten in a child module.

=cut

sub create_domain_ext {
    my ( $self, $params ) = @_;

    my $ext = '';

    if ( $params->{dnssec} ) {
        my $dsdata = '';
        foreach my $raw ( @{$params->{dnssec}} ) {
            my $ds = '';
            $ds .= "     $$raw{keytag}\n"          if $raw->{keytag};
            $ds .= "     $$raw{alg}\n"                   if $raw->{alg};
            $ds .= "     $$raw{digtype}\n" if $raw->{digtype};
            $ds .= "     $$raw{digest}\n"          if $raw->{digest};

            $dsdata .= "     \n$ds     \n" if $ds;
        }

        $ext = "   \n$dsdata    \n"
            if $dsdata;
    }

    return $ext;
}


=head2 create_domain

Domain registration.

INPUT:

params with keys:

C – domain name;

C – domain registration period, usually the default value is 1 year,
registration for several months is not implemented – this is a very rare case;

C, C, C, C – id of registrant, administrator, technical and billing contacts,
at least one contact is required, usually the registrant;

C -- hash for DNSSEC params: C, C, C, C,
for details see L;

C – array with nameservers;

C – extensions for some providers, empty by default.

OUTPUT:
see L.

An Example:

    my ( $answ, $msg ) = make_request(
        'create_domain',
        {
            dname      => "sss.ru.com",
            reg_id     => 'jp1g8fcv30fq',
            admin_id   => 'jp1g8fcv31fq',
            tech_id    => 'jp1g8fcv32fq',
            billing_id => 'jp1g8fcv33fq',
            authinfo   => 'jp1g8fcv30fq+jp1g8fcv31fq',
            nss        => [ 'dns1.yandex.net','dns2.yandex.net' ],
            period     => 1,
        },
    );

=cut

sub create_domain {
    my ( $self, $params ) = @_;

    return ( 0, 0, 'no dname' ) unless $params->{dname};

    my $nss = '';
    if ( $params->{nss}  &&  scalar @{$params->{nss}} ) {
        $nss = $self->create_domain_nss( $params );
    }

    my $cont = '';
    # 1. There is a zone without an owner, but with admin :)
    # 2. Verisign Core server -- without all contacts
    $cont .= qq|\n    $$params{reg_id}| if $$params{reg_id};

    foreach my $t ( 'tech', 'admin', 'billing' ) {
        if ( $$params{$t.'_id'} ) {
            $$params{$t.'_id'} = [ $$params{$t.'_id'} ] unless ref $$params{$t.'_id'};

            foreach my $c ( @{$$params{$t.'_id'}} ) {
                $cont .= qq|\n    $c|;
            }
        }
    }

    my $descr = ''; # tcinet registry
    if ( $params->{descr} ) {
        $params->{descr} = [ $params->{descr} ] unless ref $params->{descr};

        $descr .= "\n    $_" for @{$params->{descr}};
    }

    my $authinfo = $self->create_domain_authinfo( $params );

    my $ext = $params->{extension} || '';

    $ext .= $self->create_domain_ext( $params );

    $ext = "\n  \n$ext  " if $ext;

    my $cltrid = get_cltrid();

    my $body = <
$$self{urn}{head}



    $$params{dname}
    $$params{period}$nss$cont$authinfo$descr

  $ext
  $cltrid


CREATEDOM

    return $self->simple_request( $body, 'create_domain' );
}


=head2 get_domain_info_rdata

Covertor domains xml resData data to hash.

Can be overwritten in a child module.

=cut

sub get_domain_info_rdata {
    my ( $self, $rdata ) = @_;

    my $info = {};

    ( $info->{dname} ) = $rdata =~ /([^<>]+)<\/domain:name>/;
    $info->{dname} = lc $info->{dname};

    #
    my @ss = $rdata =~ //g;
    # No reason supplied
    my @aa = $rdata =~ /]+>[^<>]+<\/domain:status>/g;
    if ( scalar @aa ) {
        foreach my $row ( @aa ) {
            if ( $row =~ /([^<>]+)<\/domain:status>/ ) {
                $info->{statuses}{$1} = $2;
            }
        }
    }
    else {
        $info->{statuses}{$_} = '+' for @ss;
    }

    if ( $rdata =~ /([^<>]+)<\/domain:registrant>/             ) {
        # One of the .ua zones uses admin instead of owner
        $info->{reg_id}     = $1;
    }

    my @cc = $rdata =~ /[^<>]+<\/domain:contact>/g;
    foreach my $row ( @cc ) {
        if ( $row =~ /([^<>]+)<\/domain:contact>/ ) {
            $info->{ lc($1) . '_id' } = $2;
        }
    }

    if ( $rdata =~ // ) {
        $info->{descr} = [ $rdata =~ /([^<>]+)<\/domain:description>/g ];
    }

    if ( $rdata =~ // ) {
        $info->{nss} = [ $rdata =~ /([^<>]+)<\/domain:hostObj>/g ];
    }

    unless ( $info->{nss}  or  $rdata !~ // ) {
        # some providers use the old variant for some zones, example: irrp for ph
        # this is a rare option, so it is made separately and not built into the previous regexp
        $info->{nss} = [ $rdata =~ /([^<>]+)<\/domain:hostName>/g ];
    }

    unless ( $info->{nss}  or  $rdata !~ //  or  scalar @{$info->{nss}} ) {
        # 1 more ancient artifact, probably the oldest
        $info->{nss} = [ $rdata =~ /([^<>]+)<\/domain:ns>/g ];
    }

    if ( $info->{nss} ) {
        $info->{nss} = [ map{ lc $_ } @{$info->{nss}} ];
    }

    # Domain-based nss
    if ( $rdata =~ // ) {
        $info->{hosts} = [ $rdata =~ /([^<>]+)<\/domain:host>/g ];
        $info->{hosts} = [ map{ lc $_ } @{$info->{hosts}} ];
    }

    # owner, ...
    foreach my $k ( keys %id ) {
        if ( $rdata =~ /([^<>]+)<\/domain:$k>/ ) {
            $info->{$id{$k}} = $1;
        }
    }

    # dates
    foreach my $k ( keys %dt ) {
        if ( $rdata =~ /([^<>]+)<\/domain:$k>/ ) {
            $info->{$dt{$k}} = cldate( $1 );
        }
    }

    if ( $rdata =~ /authInfo.+([^<>]+)<\/domain:pw>.+authInfo/s ) {
        ( $info->{authinfo} ) = $1;

        $info->{authinfo} =~ s/>/>/g;
        $info->{authinfo} =~ s/</
        $info->{authinfo} =~ s/&/&/g;
    }

    ( $info->{roid} ) = $rdata =~ /([^<>]+)<\/domain:roid>/;

    my $spec = $self->get_domain_spec_rdata( $rdata );
    $info->{$_} = $spec->{$_} for keys %$spec;

    return $info;
}


=head2 get_domain_spec_rdata

Parse special data in resData from provider.

For overwritten in a child module.

In this module, the function does nothing

=cut

sub get_domain_spec_rdata {
    return {};
}


=head2 get_domain_spec_ext

Parse special data in extension from provider.

For overwritten in a child module.

In this module, the function does nothing

=cut

sub get_domain_spec_ext {
    return {};
}


=head2 get_domain_info

The main information on the domain

INPUT:

params with keys:

C – domain name;

C – extensions for some providers, empty by default.

OUTPUT:

C;

C – domain id if registry;

C – the account where the domain is located now;

C – the account where the domain was registered;

C – domain registration date;

C – domain last transfer date;

C – domain last update date;

C – domain expiration date;

C, C, C, C – domain contact IDs;

C – list of domain name servers;

C – hash where keys is status flags, values is status expiration date, if any, or other information;

C – list with name servers based on this domain.

There can also be extension parameters.

An Example:

    my ( $answer, $msg, $conn ) = make_request( 'get_domain_info', { dname => 'sss.ru.com', %conn_params  } );

    # answer:

    {
        'hosts' => [
            'ns1.sss.ru.com',
            'ns2.sss.ru.com'
        ],
        'roid' => 'D888888-CNIC',
        'cre_date' => '1212-12-12 12:12:12',
        'upd_date' => '2020-02-02 20:02:20',
        'trans_date' => '2012-12-12 12:12:12',
        'creater' => 'H12345',
        'tech_id' => '1iuhajppwsjp',
        'reg_id' => 'H12346',
        'owner' => 'H2220222',
        'exp_date' => '2022-12-12 23:59:59',
        'billing_id' => 'H12347',
        'nss' => [
            'ns1.sss.ru.com'
            'ns1.mmm.ru.com'
        ],
        'dname' => 'sss.ru.com',
        'admin_id' => 'H12348',
        'statuses' => {
            'renewPeriod' => '+',
            'clientTransferProhibited' => '+'
        }
    };

=cut

sub get_domain_info {
    my ( $self, $params ) = @_;

    unless ( $$params{dname} ) {
        return wantarray ? ( 0, 0, 'no dname') : 0;
    }

    my $pw = $$params{authinfo} ? "\n    \n     $$params{authinfo}\n    " : '';

    my $hosts_type = $$params{hosts} ? ' hosts="'.$$params{hosts}.'"' : '';

    my $ext = $$params{extension} || '';

    $ext = "\n  \n$ext  " if $ext;

    my $cltrid = get_cltrid();

    my $body = <
$$self{urn}{head}



    $$params{dname}$pw

  $ext
  $cltrid


DOMINFO

    my $answ = $self->req( $body, 'domain_info' );

    if ( $answ  &&  $answ =~ // ) {
        my $rcode = $1 + 0;

        my $msg = '';
        if ( $answ =~ /]*>(.+)<\/msg>.+\/result>/s ) {
            $msg = $1;
        }

        if ( $rcode != 1000 ) {
            if ( $answ =~ /(.+)<\/reason>/s ) {
                # for details
                $msg .= '; ' . $1;
            }

            if ( $answ =~ /(.+)<\/oxrs:xcp>/s ) {
                # for oxrs details
                $msg .= '; ' . $1;
            }

            return wantarray ? ( 0, $rcode, $msg ) : 0;
        }

        my $info = {};

        # pull out the main part and parse
        if ( $answ =~ /(.+)<\/resData>/s ) {
            my $rdata = $1;

            $info = $self->get_domain_info_rdata( $rdata );
        }

        if ( $answ =~ /(.+)<\/extension>/s ) {
            my $rdata = $1;

            my @st = $rdata =~ //g;
            $info->{statuses}{$_} = '+' for @st;

            my @est = $rdata =~ /([^<>]+<\/rgp:rgpStatus>)/g;

            foreach my $e ( @est ) {
                my ( $st, $descr ) = $e =~ /([^<>]+)<\/rgp:rgpStatus>/;

                if ( $descr =~ /^endDate=/ ) {
                    $descr =~ s/T/ /;
                    $descr =~ s/\.\d+Z$//;
                    $descr =~ s/Z$//;
                }
                $info->{statuses}{$st} = $descr;
            }

            if ( $rdata =~ /secDNS:infData/ ) {
                $info->{dnssec} = [];

                my @dsdata = $rdata =~ /(.+?)<\/secDNS:dsData>/g;
                foreach my $sdata ( @dsdata ) {
                    my %one_raw;
                    ( $one_raw{keytag}  ) = $sdata =~ /(\d+)<\/secDNS:keyTag>/;
                    ( $one_raw{alg}     ) = $sdata =~ /(\d+)<\/secDNS:alg>/;
                    ( $one_raw{digtype} ) = $sdata =~ /(\d+)<\/secDNS:digestType>/;
                    ( $one_raw{digest}  ) = $sdata =~ /([A-Za-z0-9]+)<\/secDNS:digest>/;

                    if ( $sdata =~ /(.+)<\/secDNS:keyData>/s ) {
                        my $kdata = $1;

                        $one_raw{keydata} = {};
                        ( $one_raw{keydata}{flags}    ) = $kdata =~ /(\d+)<\/secDNS:flags>/;
                        ( $one_raw{keydata}{protocol} ) = $kdata =~ /(\d+)<\/secDNS:protocol>/;
                        ( $one_raw{keydata}{alg}      ) = $kdata =~ /(\d+)<\/secDNS:alg>/;
                        ( $one_raw{keydata}{pubkey}   ) = $kdata =~ /([^<>]+)<\/secDNS:pubKey>/;
                    }

                    push @{$$info{dnssec}}, \%one_raw;
                }
            }

            my $spec = $self->get_domain_spec_ext( $rdata );
            $info->{$_} = $spec->{$_} for keys %$spec;
        }

        return wantarray ? ( $info, $rcode, $msg ) : $info;
    }

    return wantarray ? ( 0, 0, 'empty answer' ) : 0;
}


=head2 renew_domain

Domain registration renewal for N years.

INPUT:

params with keys:

C – domain name;

C – the domain renewal period in years, by default, will be prologed for 1 year;

C – current expiration date, without specifying the time;

C – extensions for some providers, empty by default.

OUTPUT:
see L.

An Example:

    my ( $a, $m ) = make_request( 'renew_domain', { dname => 'datada.net', period => 1, exp_date => '2022-22-22' } );

=cut

sub renew_domain {
    my ( $self, $params ) = @_;

    return ( 0, 0, 'no params' ) unless $$params{dname} && $$params{exp_date};

    $params->{period} ||= 1;

    my $ext = $params->{extension} || '';

    $ext = "\n  \n$ext  " if $ext;

    my $cltrid = get_cltrid();

    my $body = <
$$self{urn}{head}



    $$params{dname}
    $$params{exp_date}
    $$params{period}

  $ext
  $cltrid


RENEWDOM

    return $self->simple_request( $body, 'renew_domain' );
}


=head2 update_domain_add_nss

Part of the update_domain function.

Can be overwritten in a child module, example, in L

=cut

sub update_domain_add_nss {
    my ( undef, $params ) = @_;

    my $add = "     \n";

    foreach my $ns ( @{$$params{add}{nss}} ) {
        $add .= "      $ns\n";
    }

    $add .= "     \n";

    return $add;
}


=head2 update_domain_rem_nss

Part of the update_domain function.

Can be overwritten in a child module.

=cut

sub update_domain_rem_nss {
    my ( undef, $params ) = @_;

    my $rem = "     \n";

    foreach my $ns ( @{$$params{rem}{nss}} ) {
        $rem .= "      $ns\n";
    }

    $rem .= "     \n";

    return $rem;
}


=head2 update_domain_ext

Part of the update_domain function.

Can be overwritten in a child module.

In this function this module contains the DNSSEC extension

=cut

sub update_domain_ext {
    my ( undef, $params ) = @_;

    my $ext = '';

    my $rem_ds = '';
    if ( $params->{rem}  &&  $params->{rem}{dnssec} ) {
        foreach my $raw ( @{$params->{rem}{dnssec}} ) {
            my $ds = '';
            $ds .= "      $$raw{keytag}\n"          if $raw->{keytag};
            $ds .= "      $$raw{alg}\n"                   if $raw->{alg};
            $ds .= "      $$raw{digtype}\n" if $raw->{digtype};
            $ds .= "      $$raw{digest}\n"          if $raw->{digest};

            $rem_ds .= "     \n$ds     \n" if $ds;
        }

        $rem_ds = "    \n$rem_ds    \n" if $rem_ds;
    }

    my $add_ds = '';
    if ( $params->{add}  &&  $params->{add}{dnssec} ) {
        foreach my $raw ( @{$params->{add}{dnssec}} ) {
            my $ds = '';
            $ds .= "      $$raw{keytag}\n"          if $raw->{keytag};
            $ds .= "      $$raw{alg}\n"                   if $raw->{alg};
            $ds .= "      $$raw{digtype}\n" if $raw->{digtype};
            $ds .= "      $$raw{digest}\n"          if $raw->{digest};

            $add_ds .= "     \n$ds     \n" if $ds;
        }

        $add_ds = "    \n$add_ds    \n" if $add_ds;
    }

    if ( $rem_ds || $add_ds ) {
        $ext .= "\n   \n";
        $ext .= $rem_ds;
        $ext .= $add_ds;
        $ext .= "   \n";
    }

    return $ext;
}

=head2 update_domain

To update domain data: contact ids, authinfo, nss, statuses.

INPUT:

params with keys:

C – domain name

C, C – hashes for adding and deleting data:

C, C, C – contact IDs;

C – list with name servers;

C – various client* statuses;

C – DNSSEC extension parameters.

C – hash for changeable data:

C – registrant contact id;

C – new key for domain;

OUTPUT:
see L.

Examples:

    my ( $a, $m, $c ) = make_request( 'update_domain', {
        dname => 'example.com',
        chg => { authinfo => 'fnjkfrekrejkfrenkfrenjkfren' },
        rem => { nss => [ 'ns1.qqfklnqq.com', 'ns2.qqfklnqq.com' ] },
        add => { nss => [ 'ns1.web.name', 'ns2.web.name' ] },
        %conn_params,
    } );

    ( $a, $m ) = make_request( 'update_domain', {
        dname => 'example.com',
        rem => { statuses => [ 'clientUpdateProhibited','clientDeleteProhibited' ] },
        add => { statuses => [ 'clientHold'  ] },
        conn => $c,
    } );

=cut

sub update_domain {
    my ( $self, $params ) = @_;

    return ( 0, 0, 'no params' ) unless ref $params;

    return ( 0, 0, 'no dname' ) unless $params->{dname};

    my $nm = 'update_domain';

    my $add = '';
    if ( ref $$params{add} ) {
        if ( $$params{add}{nss}  &&  ref $$params{add}{nss}  &&  scalar( @{$$params{add}{nss}} ) ) {
            $add .= $self->update_domain_add_nss( $params );

            $nm .= '_add_ns';
        }

        foreach my $t ( 'admin', 'billing', 'tech' ) {
            if ( $$params{add}{$t.'_id'} ) {
                $$params{add}{$t.'_id'} = [ $$params{add}{$t.'_id'} ] unless ref $$params{add}{$t.'_id'};

                foreach my $c ( @{$$params{add}{$t.'_id'}} ) {
                    $add .= qq|     $c\n|;
                }
            }
        }

        if ( $params->{add}{statuses} ) {
            $add .= $self->update_statuses_add( 'domain', $params->{add}{statuses} );

            $nm .= '_add_status';
        }
    }

    if ( $add ) {
        $add = "\n$add    ";
    }
    else {
        $add = '';
    }

    my $chg = '';
    if ( ref $$params{chg} ) {
        if ( $$params{chg}{reg_id} ) {
            $chg .= '     ' . $$params{chg}{reg_id} . "\n";

            $nm .= '_chg_cont';
        }

        if ( $$params{chg}{authinfo} ) {
            $chg .= "     \n      ".$$params{chg}{authinfo}."\n     \n";

            $nm .= '_chg_key';
        }

        if ( $params->{chg}{descr} ) {
            $params->{chg}{descr} = [ $params->{chg}{descr} ] unless ref $params->{chg}{descr};

            $chg .= "     $_\n" foreach @{$params->{chg}{descr}};

            $nm .= '_chg_descr';
        }
    }

    if ( $chg ) {
        $chg = "\n$chg    ";
    }
    else {
        $chg = '';
    }

    my $rem = '';
    if ( $$params{rem} ) {
        if ( $$params{rem}{nss}  &&  ref $$params{rem}{nss}  &&  scalar( @{$$params{rem}{nss}} ) ) {
            $rem .= $self->update_domain_rem_nss( $params );

            $nm .= '_del_ns';
        }

        foreach my $t ( 'admin', 'billing', 'tech' ) {
            if ( $$params{rem}{$t.'_id'} ) {
                $$params{rem}{$t.'_id'} = [ $$params{rem}{$t.'_id'} ] unless ref $$params{rem}{$t.'_id'};

                foreach my $c ( @{$$params{rem}{$t.'_id'}} ) {
                    $rem .= qq|     $c\n|;
                }
            }
        }

        if ( $$params{rem}{statuses} ) {
            $rem .= $self->update_statuses_rem( 'domain', $$params{rem}{statuses} );

            $nm .= '_del_status';
        }
    }

    if ( $rem ) {
        $rem = "\n$rem    ";
    }
    else {
        $rem = '';
    }

    my $ext = $$params{extension} || '';

    $ext .= $self->update_domain_ext( $params );

    $ext = "\n  \n$ext  " if $ext;

    my $cltrid = get_cltrid();

    my $body = <
$$self{urn}{head}



    $$params{dname}
    $add
    $rem
    $chg

  $ext
  $cltrid


UPDDOM

    return $self->simple_request( $body, $nm );
}


=head2 transfer

Domain transfers: to us, from us, reject transfers.

INPUT:

params with keys:

C – operation, possible variants: C, C, C, C, C;

C – key for alien domain;

C – if the transfer with renew, you can specify the extension period for some registries, undef and zero have different values;

C – extensions for some registries in xml format;

C – special parameters for very original providers.

OUTPUT:

It depends very much on the operation and on the registry

Examples:

    my ( $answ, $code, $msg ) = $conn->transfer( { op => 'request', dname => 'reclick.realty',  authinfo => '123qweRTY{*}', period => 1 } );

    ( $answ, $code, $msg ) = $conn->transfer( { op => 'query', dname => 'reclick.realty',  authinfo => '123qweRTY{*}' } );

    # answer from the CentralNic

    {
        'exp_date' => '2021-01-18 23:59:59',
        'cltrid' => '9d7e6ec767ec7d9d9d40fc518a5',
        'trstatus' => 'pending', # transfer status
        'requestors_id' => 'H2220222', # this we
        'dname' => 'reclick.realty',
        'senders_id' => 'H3105376', # godaddy
        'send_date' => '2020-01-15 21:14:26',
        'svtrid' => 'CNIC-82A2E9B355020697D1B3EF6FDE9D822D4CCE1D1616412EF53',
        'request_date' => '2020-01-10 21:14:26'
    };

    ( $answ, $code, $msg ) = $conn->transfer( { op => 'approve', dname => 'reclick.realty' } );

    ( $answ, $code, $msg ) = $conn->transfer( { op => 'reject', dname => 'reclick.realty',  authinfo => '123qweRTY{*}' } );

    ( $answ, $code, $msg ) = $conn->transfer( { op => 'cancel', dname => 'reclick.realty',  authinfo => '123qweRTY{*}' } );

=cut

sub transfer {
    my ( $self, $params ) = @_;

    return ( 0, 0, 'no dname' ) unless $params->{dname};

    return ( 0, 0, 'no op[eration]' ) unless $params->{op} && $params->{op} =~ /query|request|cancel|approve|reject|usertransfer/;

    my $pw = '';
    if ( defined $params->{authinfo} ) {
        # 0 & undef are differents
        $pw = "\n    \n     $$params{authinfo}\n    ";
    }

    my $per = '';
    if ( defined $params->{period} ) {
        # 0 & undef is different
        $per = qq|\n    $$params{period}|;
    }

    # special parameters for very original registries
    my $spec = $$params{addition} || '';

    my $ext = $$params{extension} || '';

    $ext = "\n  \n$ext  " if $ext;

    my $cltrid = get_cltrid();

    my $body = <
$$self{urn}{head}



    $$params{dname}$per$pw$spec

  $ext
  $cltrid


TRANS

    my $answ = $self->req( $body, $$params{op}.'_transfer' );

    if ( $answ =~ // ) {
        my $rcode = $1 + 0;

        my $msg = '';
        if ( $answ =~ /]*>(.+)<\/msg>.+\/result>/s ) {
            $msg = $1;

            if ( $answ =~ /]*>(.+)<\/text>.+\/result>/s ) {
                $msg .= '; ' . $1;
            }

            if ( $answ =~ /([^<>]+)<\/reason>/ ) {
                $msg .= '; ' . $1;
            }
        }

        my $info = {}; # for data

        # pull out the main part and parse
        if ( $answ =~ /(.+)<\/resData>/s ) {
            my $rdata = $1;

            ( $info->{dname} ) = $rdata =~ /([^<>]+)<\/domain:name>/;

            ( $info->{trstatus} ) = $rdata =~ /([^<>]+)<\/domain:trStatus>/;

            # owner, ...
            foreach my $k ( keys %id ) {
                if ( $rdata =~ /([^<>]+)<\/domain:$k>/ ) {
                    $info->{$id{$k}} = $1;
                }
            }

            # dates
            foreach my $k ( keys %dt ) {
                if ( $rdata =~ /([^<>]+)<\/domain:$k>/ ) {
                    $info->{$dt{$k}} = $1;

                    $info->{$dt{$k}} =~ s/T/ /;
                    $info->{$dt{$k}} =~ s/\.\d+Z$//;
                    $info->{$dt{$k}} =~ s/Z$//;
                }
            }
        }

        ( $info->{cltrid} ) = $answ =~ /([0-9A-Za-z\-]+)<\/clTRID>/;
        ( $info->{svtrid} ) = $answ =~ /([0-9A-Za-z\-]+)<\/svTRID>/;

        return wantarray ? ( $info, $rcode, $msg ) : $info;
    }

    return wantarray ? ( 0, 0, 'empty answer' ) : 0;
}


=head2 delete_domain

Deleting a domain.

params with keys:

C – domain name

C – extensions for some registries in xml format

OUTPUT:
see L.

An Example:

    my ( $a, $m ) = make_request( 'delete_domain', { dname => 'ssslll.ru.com', %conn_params } );

=cut

sub delete_domain {
    my ( $self, $params ) = @_;

    return ( 0, 0, 'no dname' ) unless $params->{dname};

    my $ext = $$params{extension} || '';

    $ext = "\n  \n$ext  " if $ext;

    my $cltrid = get_cltrid();

    my $body = <
$$self{urn}{head}



    $$params{dname}

  $ext
  $cltrid


DELDOM

    return $self->simple_request( $body, 'delete_domain' );
}


=head2 req_poll_rdata

Parse resData from req poll

Can be overwritten in a child module

=cut

sub req_poll_rdata {
    my ( $self, $rdata ) = @_;

    my %info;

    if ( $rdata =~ /^\s*
        $info{upd_del} = {};
        ( $info{upd_del}{result}, $info{upd_del}{contact} ) =
            $rdata =~ /([^<>]+)<\/contact:id>/;
    }

    elsif ( $rdata =~ /\s*
        ( $info{ns} ) = $rdata =~ m|([^<>]+)|s;
        $info{ns} = lc $info{ns};

        ( $info{roid} ) = $rdata =~ m|([^<>]+)|s;

        my @sts = $rdata =~ m|()|gs;
        for my $row ( @sts ) {
            if ( $row =~ /host:status s="([^"]+)"/ ) {
                $info{statuses}{$1} = '+';
            }
        }

        my @ips = $rdata =~ m|([^<>]+)|gs;
        $info{ips} = [];
        for my $row ( @ips ) {
            if ( $row =~ m|host:addr ip="v\d">([^<>]+)
                push @{$info{ips}}, $1;
            }
        }
        # owner, ...
        foreach my $k ( keys %id ) {
            if ( $rdata =~ /([^<>]+)<\/host:$k>/ ) {
                $info{$id{$k}} = $1;
            }
        }
        # dates
        foreach my $k ( keys %dt ) {
            if ( $rdata =~ m|([^<>]+)| ) {
                $info{$dt{$k}} = cldate( $1 );
            }
        }
    }

    elsif ( $rdata =~ /^\s*
        $info{create} = {};
        ( $info{create}{dname} ) = $rdata =~ /([^<>]+)<\/domain:name>/;

        if ( $rdata =~ /([^<>]+)<\/domain:crDate>/ ) {
            $info{create}{date} = IO::EPP::Base::cldate( $1 );
        }
    }

    elsif ( $rdata =~ /^\s*
        $info{renew} = {};
        ( $info{renew}{dname}  ) = $rdata =~ /([^<>]+)<\/domain:name>/;
    }

    elsif ( $rdata =~ /^\s*
        $info{transfer} = {};
        ( $info{transfer}{dname}  ) = $rdata =~ /([^<>]+)<\/domain:name>/;
        ( $info{transfer}{status} ) = $rdata =~ /([^<>]+)<\/domain:trStatus>/;

        # sender, requestor
        foreach my $k ( keys %id ) {
            if ( $rdata =~ /([^<>]+)<\/domain:$k>/ ) {
                $info{transfer}{$id{$k}} = $1;
            }
        }
        # dates
        foreach my $k ( keys %dt ) {
            if ( $rdata =~ /([^<>]+)<\/domain:$k>/ ) {
                $info{transfer}{$dt{$k}} = IO::EPP::Base::cldate( $1 );
            }
        }
    }

    elsif ( $rdata =~ /^\s*
        $info{upd_del} = {};
        ( $info{upd_del}{result}, $info{upd_del}{dname} ) =
            $rdata =~ /([^<>]+)<\/domain:name>/;

        if ( $rdata =~ /(.+?)<\/domain:paTRID>/s ) {
            my $trids = $1;
            if ( $trids =~ /([0-9A-Za-z]+)<\/clTRID>/ ) {
                $info{upd_del}{cltrid} = $1;
            }
            if ( $trids =~ /([0-9A-Za-z\-]+)<\/svTRID>/ ) {
                $info{upd_del}{svtrid} = $1;
            }
        }

        if ( $rdata =~ /([^<>]+)<\/domain:paDate>/ ) {
            $info{upd_del}{date} = IO::EPP::Base::cldate( $1 );
        }
    }

    else {
        return ( 0, 'New poll message type!' );
    }

    return ( \%info, '' );

}


=head2 req_poll_ext

Parse req poll extension

Empty, for overwriting in children modules

=cut

sub req_poll_ext {
    return {};
}


=head2 req_poll

Get and parse top message from poll

No input params.

OUTPUT:

Еach provider has a lot of different types of messages.
Only domain transfer messages are similar.
They have something like this format:

    {
        'code' => '1301',
        'msg' => 'Command completed successfully; ack to dequeue',
        'count' => '1',
        'id' => '456789',
        'date' => '2020-02-02 20:02:02',
        'qmsg' => 'Transfer Requested.',
        'transfer' => {
            'dname' => 'example.com',
            'status' => 'pending',
            'senders_id' => '1111'.
            'requestors_id' => '999',
            'request_date' => '2001-01-01 01:01:01',
            'send_date' => '2001-01-06 01:01:01'
        },
        'svtrid' => '4569552848-1578703988000',
        'cltrid' => '1f80c34195a936dfb0d2bd0c414141414'
    };

C – the registrar who made the transfer request;

C – the registrar from which the domain is transferred;

C – the start date of the transfer

C – date when the transfer is completed, unless it is canceled or the domain is released;

C – the status of the transfer, the most common meaning: C, C, C, C.

=cut

sub req_poll {
    my ( $self, undef ) = @_;

    my $cltrid = get_cltrid();

    my $body = <
$$self{urn}{head}


  $cltrid


RPOLL

    my $answ = $self->req( $body, 'req_poll' );

    if ( $answ  and  $answ =~ // ) {
        my $rcode = $1 + 0;

        my $msg = '';
        if ( $answ =~ /]*>(.+?)<\/msg>.+\/result>/s ) {
            $msg = $1;
        }

        my %info;

        if ( $rcode == 1301 ) {
            if ( $answ =~ /(.*)<\/msgQ>/s ) {
                $info{$1} = $2;
                $info{$3} = $4;
                my $q     = $5;

                if ( $q  and  $q =~ /(.+)<\/qDate>.*(.+?)<\/msg>/s ) {
                    $info{date} = IO::EPP::Base::cldate( $1 );
                    $info{qmsg} =  $3;
                    $info{qmsg} =~ s/"/"/g;
                    if ( $info{qmsg} =~ /\[CDATA\[/ ) {
                        $info{qmsg} =~ s/
                        $info{qmsg} =~ s/\]\]>//;
                    }
                }
                # wihout special message
                elsif ( $q  and  $q =~ /(.+)<\/qDate>/s ) {
                    $info{date} = IO::EPP::Base::cldate( $1 );
                    $info{qmsg} = $q; #
                }
                elsif ( $q ) {
                    # not standard
                    $info{qmsg} = $q;
                }
            }

            if ( $answ =~ /(.+?)<\/resData>/s ) {
                my ( $rdata, $err ) = $self->req_poll_rdata( $1 );

                if ( !$rdata  and  $err ) {
                    return wantarray ? ( 0, 0, $err ) : 0 ;
                }

                $info{$_} = $rdata->{$_} for keys %$rdata;
            }

            if ( $answ =~ /(.+?<\/extension>)/s ) {
                $info{ext} = $self->req_poll_ext( $1 );
            }

            ( $info{cltrid} ) = $answ =~ /([0-9A-Za-z\-]+)<\/clTRID>/;
            ( $info{svtrid} ) = $answ =~ /([0-9A-Za-z\-]+)<\/svTRID>/;
        }

        return wantarray ? ( \%info, $rcode, $msg ) : \%info;
    }

    return wantarray ? ( 0, 0, 'empty answer' ) : 0 ;
}

=head2 ask_poll

Delete message from poll by id

INPUT:

C – id of the message to be removed from the queue.

=cut

sub ask_poll {
    my ( $self, $params ) = @_;

    return ( 0, 0, 'no msg_id' ) unless $params->{msg_id};

    my $cltrid = get_cltrid();

    my $body = <
$$self{urn}{head}


  $cltrid


APOLL

    my $answ = $self->req( $body, 'ask_poll' );

    if ( $answ  &&  $answ =~ // ) {
        my $rcode = $1 + 0;

        my ( $msg ) = $answ =~ /]*>(.+)<\/msg>.+\/result>/s;

        my %info;

        if ( $answ =~ // ) {
            $info{msg_cnt} = $1;
            $info{msg_id}  = $2;
        }

        return wantarray ? ( \%info, $rcode, $msg ) : \%info;
    }

    # Неконнект или ошибка запроса
    # По хорошему надо отделять неконнект от ошибки
    return wantarray ? ( 0, 0, 'empty answer' ) : 0 ;
}


=head2 logout

Close session, disconnect

No input parameters.

=cut

sub logout {
    my ( $self ) = @_;

    return unless $self->{sock};

    unless ( $self->{test}  ||  $self->{sock}->opened() ) {
        delete $self->{sock};

        return;
    }

    my $cltrid = get_cltrid();

    my $logout = <
$$self{urn}{head}


  $cltrid


LOGOUT

    $self->req( $logout, 'logout' );

    unless ( $self->{test} ) {
        close( $self->{sock} );
    }

    delete $self->{sock};

    return ( undef, '1500', 'ok' );
}


sub DESTROY {
    my ( $self ) = @_;

    local ($!, $@, $^E, $?); # Protection against action-at-distance

    if ( $self->{sock} ) {
        $self->logout();
    }

    if ( $self->{log_fh} ) {
        close $self->{log_fh};

        delete $self->{log_fh};
    }
}


1;

__END__