—
—
—
—
—
—
—

              
package App::Netdisco::Util::Port;
use Dancer qw/:syntax :script/;
use Dancer::Plugin::DBIC 'schema';
use App::Netdisco::Util::Device 'get_device';
use base 'Exporter';
our @EXPORT = ();
our @EXPORT_OK = qw/
  vlan_reconfig_check port_reconfig_check
  get_port get_iid get_powerid
  is_vlan_interface port_has_phone
/;
our %EXPORT_TAGS = (all => \@EXPORT_OK);
HideShow 31 lines of Pod
=head1 NAME
App::Netdisco::Util::Port
=head1 DESCRIPTION
A set of helper subroutines to support parts of the Netdisco application.
There are no default exports, however the C<:all> tag will export all
subroutines.
=head1 EXPORT_OK
=head2 vlan_reconfig_check( $port )
=over 4
=item *
Sanity check that C<$port> is not a vlan subinterface.
=item *
Permission check that C<vlanctl> is true in Netdisco config.
=back
Will return nothing if these checks pass OK.
=cut
sub vlan_reconfig_check {
  my $port = shift;
  my $ip = $port->ip;
  my $name = $port->port;
  my $is_vlan = is_vlan_interface($port);
  # vlan (routed) interface check
  return "forbidden: [$name] is a vlan interface on [$ip]"
    if $is_vlan;
  return "forbidden: not permitted to change native vlan"
    if not setting('vlanctl');
  return;
}
HideShow 29 lines of Pod
=head2 port_reconfig_check( $port )
=over 4
=item *
Permission check that C<portctl_nameonly> is false in Netdisco config.
=item *
Permission check that C<portctl_uplinks> is true in Netdisco config, if
C<$port> is an uplink.
=item *
Permission check that C<portctl_nophones> is not true in Netdisco config, if
C<$port> has a phone connected.
=item *
Permission check that C<portctl_vlans> is true if C<$port> is a vlan
subinterface.
=back
Will return nothing if these checks pass OK.
=cut
sub port_reconfig_check {
  my $port = shift;
  my $ip = $port->ip;
  my $name = $port->port;
  my $has_phone = port_has_phone($port);
  my $is_vlan   = is_vlan_interface($port);
  # only permitted to change interface name
  return "forbidden: not permitted to change port configuration"
    if setting('portctl_nameonly');
  # uplink check
  return "forbidden: port [$name] on [$ip] is an uplink"
    if $port->remote_type and not $has_phone and not setting('portctl_uplinks');
  # phone check
  return "forbidden: port [$name] on [$ip] is a phone"
    if $has_phone and setting('portctl_nophones');
  # vlan (routed) interface check
  return "forbidden: [$name] is a vlan interface on [$ip]"
    if $is_vlan and not setting('portctl_vlans');
  return;
}
HideShow 11 lines of Pod
=head2 get_port( $device, $portname )
Given a device IP address and a port name, returns a L<DBIx::Class::Row>
object for the Port on the Device in the Netdisco database.
The device IP can also be passed as a Device C<DBIx::Class> object.
Returns C<undef> if the device or port are not known to Netdisco.
=cut
sub get_port {
  my ($device, $portname) = @_;
  # accept either ip or dbic object
  $device = get_device($device);
  my $port = schema('netdisco')->resultset('DevicePort')
    ->find({ip => $device->ip, port => $portname});
  return $port;
}
HideShow 10 lines of Pod
=head2 get_iid( $info, $port )
Given an L<SNMP::Info> instance for a device, and the name of a port, returns
the current interface table index for that port. This can be used in further
SNMP requests on attributes of the port.
Returns C<undef> if there is no such port name on the device.
=cut
sub get_iid {
  my ($info, $port) = @_;
  # accept either port name or dbic object
  $port = $port->port if ref $port;
  my $interfaces = $info->interfaces;
  my %rev_if     = reverse %$interfaces;
  my $iid        = $rev_if{$port};
  return $iid;
}
HideShow 10 lines of Pod
=head2 get_powerid( $info, $port )
Given an L<SNMP::Info> instance for a device, and the name of a port, returns
the current PoE table index for the port. This can be used in further SNMP
requests on PoE attributes of the port.
Returns C<undef> if there is no such port name on the device.
=cut
sub get_powerid {
  my ($info, $port) = @_;
  # accept either port name or dbic object
  $port = $port->port if ref $port;
  my $iid = get_iid($info, $port)
    or return undef;
  my $p_interfaces = $info->peth_port_ifindex;
  my %rev_p_if     = reverse %$p_interfaces;
  my $powerid      = $rev_p_if{$iid};
  return $powerid;
}
HideShow 10 lines of Pod
=head2 is_vlan_interface( $port )
Returns true if the C<$port> L<DBIx::Class> object represents a vlan
subinterface.
This uses simple checks on the port I<type> and I<name>, and therefore might
sometimes returns a false-negative result.
=cut
sub is_vlan_interface {
  my $port = shift;
  my $is_vlan  = (($port->type and
    $port->type =~ /^(53|propVirtual|l2vlan|l3ipvlan|135|136|137)$/i)
    or ($port->port and $port->port =~ /vlan/i)
    or ($port->name and $port->name =~ /vlan/i)) ? 1 : 0;
  return $is_vlan;
}
HideShow 9 lines of Pod
=head2 port_has_phone( $port )
Returns true if the C<$port> L<DBIx::Class> object has a phone connected.
This uses a simple check on the I<type> of the remote connected device, and
therefore might sometimes return a false-negative result.
=cut
sub port_has_phone {
  my $port = shift;
  my $has_phone = ($port->remote_type
    and $port->remote_type =~ /ip.phone/i) ? 1 : 0;
  return $has_phone;
}
1;