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Local modifications to ClusterLabs/Anvil by Alteeve
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anvil/tools/striker-scan-network

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#!/usr/bin/perl
#
# This periodically runs a basic ping sweep using nmap to find devices on the given network. As devices are
# found, they may be further processed (ie: to see if a MAC address matches a server to find the IP address
# of a hosted server).
#
# Exit codes;
# 0 = Normal exit
# 1 = No databases available.
# 2 = The '--network X' value is not valid.
# 3 = Not yet time to rescan.
#
# TODO: * Support '--dhcp' where, if set, we look up the DHCP range offered by the Striker dashboard(s) and
# scan just the lease range. This should speed up discovery of new/replacement foundation pack
# equipment.
use strict;
use warnings;
use Anvil::Tools;
use Data::Dumper;
# Turn off buffering so that the pinwheel will display while waiting for the SSH call(s) to complete.
$| = 1;
my $THIS_FILE = ($0 =~ /^.*\/(.*)$/)[0];
my $running_directory = ($0 =~ /^(.*?)\/$THIS_FILE$/)[0];
if (($running_directory =~ /^\./) && ($ENV{PWD}))
{
$running_directory =~ s/^\./$ENV{PWD}/;
}
my $anvil = Anvil::Tools->new();
# Make sure we're running as 'root'
# $< == real UID, $> == effective UID
if (($< != 0) && ($> != 0))
{
# Not root
$anvil->Log->entry({source => $THIS_FILE, line => __LINE__, 'print' => 1, level => 0, key => "error_0005"});
$anvil->nice_exit({exit_code => 5});
}
$anvil->Database->connect({check_for_resync => 1});
$anvil->Log->entry({source => $THIS_FILE, line => __LINE__, level => 2, secure => 0, key => "log_0132"});
if (not $anvil->data->{sys}{database}{connections})
{
# No databases, exit.
$anvil->Log->entry({source => $THIS_FILE, line => __LINE__, level => 0, 'print' => 1, priority => "err", key => "error_0003"});
$anvil->nice_exit({exit_code => 1});
}
# Do we have a specified network to scan?
$anvil->data->{switches}{network} = "";
$anvil->data->{switches}{'job-uuid'} = "";
$anvil->data->{switches}{force} = "";
$anvil->Get->switches;
$anvil->Log->entry({source => $THIS_FILE, line => __LINE__, level => 2, secure => 0, key => "log_0115", variables => { program => $THIS_FILE }});
$anvil->Log->variables({source => $THIS_FILE, line => __LINE__, level => 2, list => {
"switches::network" => $anvil->data->{switches}{network},
"switches::job-uuid" => $anvil->data->{switches}{'job-uuid'},
"switches::force" => $anvil->data->{switches}{force},
}});
update_progress($anvil, 0, "clear");
update_progress($anvil, 1, "log_0239,!!job-uuid!".$anvil->data->{switches}{'job-uuid'}."!!");
$anvil->data->{progress} = 1;
check_if_time($anvil);
scan($anvil);
# We're done
print $anvil->Words->string({key => "message_0025"})."\n";
update_progress($anvil, 100, "message_0025");
$anvil->nice_exit({exit_code => 0});
#############################################################################################################
# Functions #
#############################################################################################################
# If this is being called as a job, this will allow the progress to be updated.
sub update_progress
{
my ($anvil, $progress, $message) = @_;
$progress = 95 if $progress > 100;
if (not $anvil->data->{switches}{'job-uuid'})
{
return(0);
}
$anvil->Job->update_progress({
progress => $progress,
message => $message,
job_uuid => $anvil->data->{switches}{'job-uuid'},
});
return(0);
}
# This checks to see if it's time to run the scan yet or not. If not, it will exit the program. If so, it
# returns with '0'.
sub check_if_time
{
my ($anvil) = @_;
# NOTE: We only scan once a day, unless 'force' is used.
if ($anvil->data->{switches}{force})
{
return(0);
}
elsif ($anvil->data->{switches}{network})
{
# We're being asked to scan a specific network.
return(0);
}
elsif (not $anvil->data->{switches}{'job-uuid'})
{
# No job_uuid, so a manual call.
return(0);
}
else
{
my ($unixtime, $variable_uuid, $modified_date) = $anvil->Database->read_variable({variable_name => "network-scan::scanned"});
$anvil->Log->variables({source => $THIS_FILE, line => __LINE__, level => 2, list => {
unixtime => $unixtime,
variable_uuid => $variable_uuid,
modified_date => $modified_date,
}});
if (($unixtime eq "") or ($unixtime =~ /\D/))
{
$unixtime = 0;
$anvil->Log->variables({source => $THIS_FILE, line => __LINE__, level => 2, list => { unixtime => $unixtime }});
}
### TODO: Allow the user to set a "scan time" that will wait until the local time is after a
### certain time before scaning. Also, allow the user to disable auto-scan entirely.
# If the database variable 'network-scan::scanned' is not set, or is more than 24 hours old,
# scan.
$anvil->data->{'network-scan'}{'scan-period'} = 86400 if not defined $anvil->data->{'network-scan'}{'scan-period'};
$anvil->data->{'network-scan'}{'scan-period'} =~ s/,//g;
$anvil->Log->variables({source => $THIS_FILE, line => __LINE__, level => 2, list => {
'network-scan::scan-period' => $anvil->data->{'network-scan'}{'scan-period'},
}});
if ($anvil->data->{'network-scan'}{'scan-period'} =~ /\D/)
{
$anvil->data->{'network-scan'}{'scan-period'} = 86400;
$anvil->Log->variables({source => $THIS_FILE, line => __LINE__, level => 2, list => {
'network-scan::scan-period' => $anvil->data->{'network-scan'}{'scan-period'},
}});
}
my $time_now = time;
my $next_scan = $unixtime + $anvil->data->{'network-scan'}{'scan-period'};
my $difference = ($next_scan - $time_now);
$anvil->Log->variables({source => $THIS_FILE, line => __LINE__, level => 2, list => {
's1:time_now' => $time_now,
's2:next_scan' => $next_scan,
's3:difference' => $difference,
}});
if ((not $variable_uuid) or ($unixtime !~ /^\d+/) or ($difference < 0))
{
# It's been long enough (or it's the first time), scan.
return(0);
}
elsif ($difference > 0)
{
# Log when the next scan will happen and then exit.
my $say_when = $anvil->Convert->time({'time' => $difference, long => 1});
$anvil->Log->entry({source => $THIS_FILE, line => __LINE__, level => 2, 'print' => 1, key => "log_0450", variables => { next_scan => $anvil->Convert->add_commas({number => $say_when}) }});
update_progress($anvil, 100, "log_0450,!!next_scan!".$anvil->Convert->add_commas({number => $say_when})."!!");
$anvil->nice_exit({exit_code => 3});
}
}
return(0);
}
# This scans any networks passed in.
sub scan
{
my ($anvil) = @_;
$anvil->Log->variables({source => $THIS_FILE, line => __LINE__, level => 2, list => { "switches::network" => $anvil->data->{switches}{network} }});
if ($anvil->data->{switches}{network})
{
# If this network is a specific subnet, scan it. If the network is 'bcn', 'sn', 'ifn' or
# 'bcnX', 'snX', 'snX', find the network on the appropriate interfaces and use it's network.
if ($anvil->data->{switches}{network} =~ /^(\d+.*?)\/(\d+.*)$/)
{
my $ip = $1;
my $subnet_mask = $2;
$anvil->Log->variables({source => $THIS_FILE, line => __LINE__, level => 2, list => { "switches::network" => $anvil->data->{switches}{network} }});
my $ip_valid = $anvil->Validate->ipv4({ip => $ip});
my $subnet_mask_valid = $anvil->Validate->ipv4({ip => $subnet_mask});
$anvil->Log->variables({source => $THIS_FILE, line => __LINE__, level => 2, list => {
ip_valid => $ip_valid,
subnet_mask_valid => $subnet_mask_valid,
}});
if (not $subnet_mask_valid)
{
# Migt be cidr
if (($subnet_mask =~ /^\d+$/) && ($subnet_mask >= 0) && ($subnet_mask <= 32))
{
# Valid CIDR address
$subnet_mask_valid = 1;
$anvil->Log->variables({source => $THIS_FILE, line => __LINE__, level => 2, list => { subnet_mask_valid => $subnet_mask_valid }});
}
}
if ((not $ip_valid) or (not $subnet_mask_valid))
{
# Bail out.
update_progress($anvil, 100, "error_0097,!!range!".$anvil->data->{switches}{network}."!!");
$anvil->Log->entry({source => $THIS_FILE, line => __LINE__, level => 0, 'print' => 1, priority => "err", key => "error_0097", variables => { range => $anvil->data->{switches}{network} }});
$anvil->nice_exit({exit_code => 2});
}
else
{
# Scan it!
call_nmap($anvil, $anvil->data->{switches}{network});
}
}
else
{
# If the address is [bc|s|if]n[X], scan it.
$anvil->Network->get_ips();
my $target = "local";
my $to_scan = [];
foreach my $interface (sort {$a cmp $b} keys %{$anvil->data->{network}{$target}{interface}})
{
my $ip = $anvil->data->{network}{$target}{interface}{$interface}{ip};
my $subnet_mask = $anvil->data->{network}{$target}{interface}{$interface}{subnet_mask};
$anvil->Log->variables({source => $THIS_FILE, line => __LINE__, level => 2, list => {
ip => $ip,
subnet_mask => $subnet_mask,
}});
if (($ip) && ($subnet_mask))
{
# Is this one we're interested in?
my $network_name = $anvil->data->{switches}{network};
if ($interface =~ /^$network_name/)
{
# Yup!
my $network = $anvil->Network->get_network({ip => $ip, subnet_mask => $subnet_mask});
$anvil->Log->variables({source => $THIS_FILE, line => __LINE__, level => 2, list => { network => $network }});
if ($network)
{
# Scan it.
my $address = $network."/".$subnet_mask;
$anvil->Log->variables({source => $THIS_FILE, line => __LINE__, level => 2, list => { address => $address }});
push @{$to_scan}, $address;
}
}
}
}
# Scan what we found
foreach my $address (sort {$a cmp $b} @{$to_scan})
{
call_nmap($anvil, $address);
}
}
}
else
{
# Scan all the networks we have.
$anvil->Network->get_ips();
my $target = "local";
my $to_scan = [];
foreach my $interface (sort {$a cmp $b} keys %{$anvil->data->{network}{$target}{interface}})
{
my $ip = $anvil->data->{network}{$target}{interface}{$interface}{ip};
my $subnet_mask = $anvil->data->{network}{$target}{interface}{$interface}{subnet_mask};
$anvil->Log->variables({source => $THIS_FILE, line => __LINE__, level => 2, list => {
ip => $ip,
subnet_mask => $subnet_mask,
}});
if (($ip) && ($subnet_mask))
{
my $network = $anvil->Network->get_network({ip => $ip, subnet_mask => $subnet_mask});
$anvil->Log->variables({source => $THIS_FILE, line => __LINE__, level => 2, list => { network => $network }});
if ($network)
{
# Scan it.
my $address = $network."/".$subnet_mask;
$anvil->Log->variables({source => $THIS_FILE, line => __LINE__, level => 2, list => { address => $address }});
push @{$to_scan}, $address;
}
}
}
# Scan what we found
foreach my $address (sort {$a cmp $b} @{$to_scan})
{
call_nmap($anvil, $address);
}
}
# Update the rescan time to now, if no specific network was given.
if (not $anvil->data->{switches}{network})
{
$anvil->Database->insert_or_update_variables({
debug => 3,
variable_name => "network-scan::scanned",
variable_value => time,
variable_default => "",
variable_description => "striker_0140",
variable_section => "system",
variable_source_uuid => $anvil->Get->host_uuid,
variable_source_table => "hosts",
});
}
return(0);
}
# This calls nmap and parses
sub call_nmap
{
my ($anvil, $address) = @_;
# The subnet can't be dotted decimal, so convert it to CIDR notation, if needed.
my ($ip, $subnet_mask) = ($address =~ /^(\d+.*?)\/(\d.*)$/);
$anvil->Log->variables({source => $THIS_FILE, line => __LINE__, level => 2, list => {
ip => $ip,
subnet_mask => $subnet_mask,
}});
if ($anvil->Validate->ipv4({ip => $subnet_mask}))
{
# Convert to CIDR
my $cidr = $anvil->Convert->cidr({subnet_mask => $subnet_mask});
$anvil->Log->variables({source => $THIS_FILE, line => __LINE__, level => 2, list => { cidr => $cidr }});
if (($cidr >= 0) && ($cidr <= 32))
{
$address = $ip."/".$cidr;
$anvil->Log->variables({source => $THIS_FILE, line => __LINE__, level => 2, list => { address => $address }});
}
}
$anvil->data->{progress} += 10;
update_progress($anvil, $anvil->data->{progress}, "log_0445,!!range!".$address."!!");
$anvil->Log->entry({source => $THIS_FILE, line => __LINE__, level => 0, 'print' => 1, priority => "err", key => "log_0445", variables => { range => $address }});
# Make the call directly, instead of using 'System->call', so that we can show output as it's found.
my $this_ip = "";
my $this_mac = "";
my $section = "";
my $shell_call = $anvil->data->{path}{exe}{nmap}." -sP -T4 --min-parallelism 100 --max-parallelism 256 ".$address;
open (my $file_handle, $shell_call." 2>&1 |") or $anvil->Log->entry({source => $THIS_FILE, line => __LINE__, level => 0, secure => 0, priority => "err", key => "log_0014", variables => { shell_call => $shell_call, error => $! }});
while(<$file_handle>)
{
chomp;
my $line = $_;
$line =~ s/\n$//;
$line =~ s/\r$//;
$line = $anvil->Words->clean_spaces({'string' => $line});
$anvil->Log->variables({source => $THIS_FILE, line => __LINE__, level => 2, list => { line => $line }});
$section .= $line."\n";
if ($line =~ /^Nmap scan report for (\d+\.\d+\.\d+\.\d+)$/i)
{
$this_ip = $1;
$this_mac = "";
$anvil->Log->variables({source => $THIS_FILE, line => __LINE__, level => 2, list => {
's1:this_mac' => $this_mac,
's2:this_ip' => $this_ip,
}});
}
if ($line =~ /MAC Address: (.*?) \(/)
{
$this_mac = $1;
$this_mac = lc($this_mac);
$anvil->Log->variables({source => $THIS_FILE, line => __LINE__, level => 2, list => {
's1:this_mac' => $this_mac,
's2:this_ip' => $this_ip,
}});
# Sane?
my $mac_valid = $anvil->Validate->hex({string => $this_mac, sloppy => 1});
my $ip_valid = $anvil->Validate->ipv4({ip => $this_ip});
$anvil->Log->variables({source => $THIS_FILE, line => __LINE__, level => 2, list => {
mac_valid => $mac_valid,
ip_valid => $ip_valid,
}});
# Store
if (($mac_valid) && ($ip_valid))
{
$anvil->data->{progress} += 1;
$anvil->data->{progress} = 95 if $anvil->data->{progress} > 95;
my $company = $anvil->Network->get_company_from_mac({debug => 2, mac => $this_mac });
$anvil->Log->variables({source => $THIS_FILE, line => __LINE__, level => 2, list => { company => $company }});
update_progress($anvil, $anvil->data->{progress}, "log_0446,!!ip!".$this_ip."!!,!!mac!".$this_mac."!!,!!company!".$company."!!");
$anvil->Log->entry({source => $THIS_FILE, line => __LINE__, level => 0, 'print' => 1, priority => "err", key => "log_0446", variables => {
ip => $this_ip,
mac => $this_mac,
company => $company,
}});
my ($mac_to_ip_uuid) = $anvil->Database->insert_or_update_mac_to_ip({
debug => 3,
file => $THIS_FILE,
line => __LINE__,
mac_to_ip_mac_address => $this_mac,
mac_to_ip_ip_address => $this_ip,
update_note => 0,
});
$anvil->Log->variables({source => $THIS_FILE, line => __LINE__, level => 3, list => { mac_to_ip_uuid => $mac_to_ip_uuid }});
}
else
{
# Parse error
$anvil->data->{progress} += 2;
$section =~ s/\n//g;
update_progress($anvil, $anvil->data->{progress}, "log_0444,!!ip!".$this_ip."!!,!!mac!".$this_mac."!!,!!section!".$section."!!");
$anvil->Log->entry({source => $THIS_FILE, line => __LINE__, level => 0, priority => "alert", key => "log_0444", variables => {
ip => $this_ip,
mac => $this_mac,
section => $section,
}});
}
$section = "";
}
}
close $file_handle;
return(0);
}