95 lines
2.5 KiB
Perl
95 lines
2.5 KiB
Perl
package App::Netdisco::SSHCollector::Platform::ACE;
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# vim: set expandtab tabstop=8 softtabstop=4 shiftwidth=4:
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=head1 NAME
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App::Netdisco::SSHCollector::Platform::ACE
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=head1 DESCRIPTION
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Collect ARP entries from Cisco ACE load balancers. ACEs have multiple
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virtual contexts with individual ARP tables. Contexts are enumerated
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with C<show context>, afterwards the commands C<changeto CONTEXTNAME> and
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C<show arp> must be executed for every context.
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The IOS shell does not permit to combine mulitple commands in a single
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line, and Net::OpenSSH uses individual connections for individual commands,
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so we need to use Expect to execute the changeto and show commands in
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the same context.
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=cut
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use strict;
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use warnings;
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use Dancer ':script';
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use Expect;
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use Moo;
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=head1 PUBLIC METHODS
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=over 4
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=item B<arpnip($host, $ssh)>
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Retrieve ARP entries from device. C<$host> is the hostname or IP address
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of the device. C<$ssh> is a Net::OpenSSH connection to the device.
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Returns a list of hashrefs in the format C<{ mac =E<gt> MACADDR, ip =E<gt> IPADDR }>.
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=back
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=cut
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sub arpnip{
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my ($self, $hostlabel, $ssh, $args) = @_;
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debug "$hostlabel $$ arpnip()";
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my ($pty, $pid) = $ssh->open2pty;
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unless ($pty) {
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debug "unable to run remote command [$hostlabel] " . $ssh->error;
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return ();
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}
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my $expect = Expect->init($pty);
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my ($pos, $error, $match, $before, $after);
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my $prompt = qr/#/;
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($pos, $error, $match, $before, $after) = $expect->expect(10, -re, $prompt);
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$expect->send("terminal length 0\n");
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($pos, $error, $match, $before, $after) = $expect->expect(5, -re, $prompt);
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$expect->send("show context | include Name\n");
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($pos, $error, $match, $before, $after) = $expect->expect(5, -re, $prompt);
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my @ctx;
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my @arpentries;
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for (split(/\n/, $before)){
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if (m/Name: (\S+)/){
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push(@ctx, $1);
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$expect->send("changeto $1\n");
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($pos, $error, $match, $before, $after) = $expect->expect(5, -re, $prompt);
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$expect->send("show arp\n");
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($pos, $error, $match, $before, $after) = $expect->expect(5, -re, $prompt);
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for (split(/\n/, $before)){
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my ($ip, $mac) = split(/\s+/);
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if ($ip =~ m/(\d{1,3}\.){3}\d{1,3}/ && $mac =~ m/[0-9a-f.]+/i) {
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push(@arpentries, { ip => $ip, mac => $mac });
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}
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}
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}
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}
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$expect->send("exit\n");
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$expect->soft_close();
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return @arpentries;
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}
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1;
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