# Functions for collecting general system info
use strict;
use warnings;
no warnings 'redefine';
no warnings 'uninitialized';
BEGIN { push(@INC, ".."); };
eval "use WebminCore;";
&init_config();
our ($module_config_directory, $module_var_directory, $var_directory,
%config, %gconfig, $module_name, $no_log_file_changes);
our $systeminfo_cron_cmd = "$module_config_directory/systeminfo.pl";
our $collected_info_file = "$module_config_directory/info";
if (!-e $collected_info_file) {
$collected_info_file = "$module_var_directory/info";
}
our $historic_info_dir = "$module_config_directory/history";
if (!-e $historic_info_dir) {
$historic_info_dir = "$module_var_directory/history";
}
our $get_collected_info_cache;
# collect_system_info([manual-refesh-no-cache-even-for-heavy])
# Returns a hash reference containing system information
sub collect_system_info
{
my ($manual) = @_;
my $info = { };
if (&foreign_check("proc")) {
# CPU and memory
&foreign_require("proc");
if (defined(&proc::get_cpu_info)) {
my @c = &proc::get_cpu_info();
$info->{'load'} = \@c;
}
my @procs = &proc::list_processes();
$info->{'procs'} = scalar(@procs);
if (defined(&proc::get_memory_info)) {
my @m = &proc::get_memory_info();
$info->{'mem'} = \@m;
if ($m[0] > 128*1024*1024 && $gconfig{'os_type'} eq 'freebsd') {
# Some Webmin versions overstated memory by a factor
# of 1k on FreeBSD - fix it
$m[0] /= 1024;
$m[1] /= 1024;
}
}
# CPU and kernel
my ($r, $m, $o) = &proc::get_kernel_info();
$info->{'kernel'} = { 'version' => $r,
'arch' => $m,
'os' => $o };
}
# Disk space on local filesystems
if (&foreign_check("mount")) {
&foreign_require("mount");
($info->{'disk_total'}, $info->{'disk_free'}, $info->{'disk_fs'}) =
&mount::local_disk_space();
}
# Available package updates
if (&foreign_installed("package-updates") && $config{'collect_pkgs'}) {
&foreign_require("package-updates");
my @poss = &package_updates::list_possible_updates(2, 1);
$info->{'poss'} = \@poss;
$info->{'reboot'} = &package_updates::check_reboot_required();
}
# CPU and drive temps
if (!$config{'collect_notemp'} && defined(&proc::get_current_cpu_data)) {
my ($cpu, $fans) = &proc::get_current_cpu_data();
$info->{'cputemps'} = $cpu if (ref($cpu) && @{$cpu} >= 1);
$info->{'cpufans'} = $fans if (ref($fans) && @{$fans} >= 1);
}
my @drive = &get_current_drive_temps();
$info->{'drivetemps'} = \@drive if (@drive);
# IO input and output
if (defined(&proc::get_cpu_io_usage)) {
my ($user, $kernel, $idle, $io, $vm, $bin, $bout) =
&proc::get_cpu_io_usage();
if (defined($bin)) {
$info->{'io'} = [ $bin, $bout ];
}
if (defined($user)) {
$info->{'cpu'} = [ $user, $kernel, $idle, $io, $vm ];
}
}
# Regenerate OS cache
if (defined($manual) && $manual eq 'manual') {
if (&foreign_available('webmin')) {
&foreign_require("webmin");
&webmin::detect_operating_system();
}
}
return $info;
}
# get_collected_info([manual-refesh-no-cache])
# Returns the most recently collected system information, or the current info
sub get_collected_info
{
my ($manual) = @_;
if (!defined($manual) ||
defined($manual) && $manual ne 'manual') {
if ($get_collected_info_cache) {
# Already in RAM
return $get_collected_info_cache;
}
my @st = stat($collected_info_file);
my $i = $config{'collect_interval'} || 'none';
if ($i ne 'none' && @st && $st[9] > time() - $i * 60 * 2) {
my $infostr = &read_file_contents($collected_info_file);
if ($infostr) {
my $info = &unserialise_variable($infostr);
if (ref($info) eq 'HASH' && keys(%$info) > 0) {
$get_collected_info_cache = $info;
}
}
}
}
$get_collected_info_cache ||= &collect_system_info($manual);
return $get_collected_info_cache;
}
# save_collected_info(&info)
# Save information collected on schedule
sub save_collected_info
{
my ($info) = @_;
my $fh = "INFO";
&open_tempfile($fh, ">$collected_info_file");
&print_tempfile($fh, &serialise_variable($info));
&close_tempfile($fh);
}
# refresh_possible_packages(&newpackages)
# Refresh regularly collected info on available packages
sub refresh_possible_packages
{
my ($pkgs) = @_;
my %pkgs = map { $_, 1 } @$pkgs;
my $info = &get_collected_info();
if ($info->{'poss'} && &foreign_installed("package-updates")) {
&foreign_require("package-updates");
my @poss = &package_updates::list_possible_updates(1);
$info->{'poss'} = \@poss;
}
&save_collected_info($info);
}
# add_historic_collected_info(&info, time)
# Add to the collected info log files the current CPU load, memory uses, swap
# use, disk use and other info we might want to graph
sub add_historic_collected_info
{
my ($info, $time) = @_;
if (!-d $historic_info_dir) {
&make_dir($historic_info_dir, 0700);
}
my @stats;
push(@stats, [ "load", $info->{'load'}->[0] ]) if ($info->{'load'});
push(@stats, [ "load5", $info->{'load'}->[1] ]) if ($info->{'load'});
push(@stats, [ "load15", $info->{'load'}->[2] ]) if ($info->{'load'});
push(@stats, [ "procs", $info->{'procs'} ]) if ($info->{'procs'});
if ($info->{'mem'}) {
push(@stats, [ "memused",
($info->{'mem'}->[0]-$info->{'mem'}->[1])*1024,
$info->{'mem'}->[0]*1024 ]);
if ($info->{'mem'}->[2]) {
push(@stats, [ "swapused",
($info->{'mem'}->[2]-$info->{'mem'}->[3])*1024,
$info->{'mem'}->[2]*1024 ]);
}
}
if ($info->{'disk_total'}) {
push(@stats, [ "diskused",
$info->{'disk_total'}-$info->{'disk_free'},
$info->{'disk_total'} ]);
}
# Get network traffic counts since last run
if (&foreign_check("net") && $gconfig{'os_type'} =~ /-linux$/) {
# Get the current byte count
my $rxtotal = 0;
my $txtotal = 0;
my @ifaces;
if ($config{'collect_ifaces'}) {
# From module config
@ifaces = split(/\s+/, $config{'collect_ifaces'});
}
else {
# Get list from net module
&foreign_require("net");
if (defined(&net::active_interfaces)) {
foreach my $i (&net::active_interfaces()) {
my $v = defined($i->{'virtual'}) ?
$i->{'virtual'} : '';
if ($v eq '' &&
$i->{'name'} =~ /^(eth|ppp|wlan|ath|wlan)/) {
push(@ifaces, $i->{'name'});
}
}
}
else {
# Not available on this OS?
@ifaces = ( "eth0" );
}
}
my $ifaces = join(" ", @ifaces);
foreach my $iname (@ifaces) {
&clean_language();
my $out = &backquote_command(
"ifconfig ".quotemeta($iname)." 2>/dev/null");
&reset_environment();
my $rx = $out =~ /RX\s+bytes:\s*(\d+)/i ? $1 : 0;
my $tx = $out =~ /TX\s+bytes:\s*(\d+)/i ? $1 : 0;
$rxtotal += $rx;
$txtotal += $tx;
}
# Work out the diff since the last run, if we have it
my %netcounts;
my $now = time();
if (&read_file("$historic_info_dir/netcounts", \%netcounts) &&
$netcounts{'rx'} && $netcounts{'tx'} &&
$netcounts{'ifaces'} eq $ifaces &&
$rxtotal >= $netcounts{'rx'} && $txtotal >= $netcounts{'tx'}) {
my $secs = ($now - $netcounts{'now'}) * 1.0;
if ($secs) {
my $rxscaled = ($rxtotal - $netcounts{'rx'}) / $secs;
my $txscaled = ($txtotal - $netcounts{'tx'}) / $secs;
if ($rxscaled >= $netcounts{'rx_max'}) {
$netcounts{'rx_max'} = $rxscaled;
}
if ($txscaled >= $netcounts{'tx_max'}) {
$netcounts{'tx_max'} = $txscaled;
}
push(@stats, [ "rx",$rxscaled, $netcounts{'rx_max'} ]);
push(@stats, [ "tx",$txscaled, $netcounts{'tx_max'} ]);
}
}
# Save the last counts
$netcounts{'rx'} = $rxtotal;
$netcounts{'tx'} = $txtotal;
$netcounts{'now'} = $now;
$netcounts{'ifaces'} = $ifaces;
&write_file("$historic_info_dir/netcounts", \%netcounts);
}
# Get drive temperatures
my ($temptotal, $tempcount);
foreach my $t (@{$info->{'drivetemps'}}) {
$temptotal += $t->{'temp'};
$tempcount++;
}
if ($temptotal) {
push(@stats, [ "drivetemp", $temptotal / $tempcount ]);
}
# Get CPU temperature
my ($ctemptotal, $ctempcount);
foreach my $t (@{$info->{'cputemps'}}) {
$ctemptotal += $t->{'temp'};
$ctempcount++;
}
if ($ctemptotal) {
push(@stats, [ "cputemp", $ctemptotal / $ctempcount ]);
}
# Get IO blocks
if ($info->{'io'}) {
push(@stats, [ "bin", $info->{'io'}->[0] ]);
push(@stats, [ "bout", $info->{'io'}->[1] ]);
}
# Get CPU user and IO time
if ($info->{'cpu'}) {
push(@stats, [ "cpuuser", $info->{'cpu'}->[0] ]);
push(@stats, [ "cpukernel", $info->{'cpu'}->[1] ]);
push(@stats, [ "cpuidle", $info->{'cpu'}->[2] ]);
push(@stats, [ "cpuio", $info->{'cpu'}->[3] ]);
}
# Write to the file
foreach my $stat (@stats) {
open(HISTORY, ">>$historic_info_dir/$stat->[0]");
print HISTORY $time," ",$stat->[1],"\n";
close(HISTORY);
}
# Update the file storing the max possible value for each variable
my %maxpossible;
&read_file("$historic_info_dir/maxes", \%maxpossible);
foreach my $stat (@stats) {
if ($stat->[2] &&
(!$maxpossible{$stat->[0]} ||
$stat->[2] > $maxpossible{$stat->[0]})) {
$maxpossible{$stat->[0]} = $stat->[2];
}
}
&write_file("$historic_info_dir/maxes", \%maxpossible);
}
# list_historic_collected_info(stat, [start], [end])
# Returns an array of times and values for some stat, within the given
# time period
sub list_historic_collected_info
{
my ($stat, $start, $end) = @_;
my @rv;
my $last_time;
my $now = time();
open(HISTORY, "<$historic_info_dir/$stat");
while(<HISTORY>) {
chop;
my ($time, $value) = split(" ", $_);
next if ($time < $last_time || # No time travel or future data
$time > $now);
if ((!defined($start) || $time >= $start) &&
(!defined($end) || $time <= $end)) {
push(@rv, [ $time, $value ]);
}
if (defined($end) && $time > $end) {
last; # Past the end point
}
$last_time = $time;
}
close(HISTORY);
return @rv;
}
# list_all_historic_collected_info([start], [end])
# Returns a hash mapping stats to data within some time period
sub list_all_historic_collected_info
{
my ($start, $end) = @_;
my %all;
foreach my $f (&list_historic_stats()) {
my @rv = &list_historic_collected_info($f, $start, $end);
$all{$f} = \@rv;
}
closedir(HISTDIR);
return \%all;
}
# get_historic_maxes()
# Returns a hash reference from stats to the max possible values ever seen
sub get_historic_maxes
{
my %maxpossible;
&read_file("$historic_info_dir/maxes", \%maxpossible);
return \%maxpossible;
}
# get_historic_first_last(stat)
# Returns the Unix time for the first and last stats recorded
sub get_historic_first_last
{
my ($stat) = @_;
open(HISTORY, "<$historic_info_dir/$stat") || return (undef, undef);
my $first = <HISTORY>;
$first || return (undef, undef);
chop($first);
my ($firsttime, $firstvalue) = split(" ", $first);
my $last;
seek(HISTORY, 2, -256) || seek(HISTORY, 0, 0);
while(<HISTORY>) {
$last = $_;
}
close(HISTORY);
chop($last);
my ($lasttime, $lastvalue) = split(" ", $last);
return ($firsttime, $lasttime);
}
# list_historic_stats()
# Returns a list of variables on which we have stats
sub list_historic_stats
{
my @rv;
opendir(HISTDIR, $historic_info_dir);
foreach my $f (readdir(HISTDIR)) {
if ($f =~ /^[a-z]+[0-9]*$/ && $f ne "maxes" && $f ne "procmailpos" &&
$f ne "netcounts") {
push(@rv, $f);
}
}
closedir(HISTDIR);
return @rv;
}
# setup_collectinfo_job()
# Creates or updates the Webmin function cron job, based on the interval
# set in the module config
sub setup_collectinfo_job
{
&foreign_require("webmincron");
my $step = $config{'collect_interval'};
if ($step ne 'none') {
# Setup periodic webmin cron (removing old classic cron job)
$step ||= 5;
my $cron = { 'module' => $module_name,
'func' => 'scheduled_collect_system_info',
'interval' => $step * 60,
'args' => [],
};
&webmincron::create_webmin_cron($cron, $systeminfo_cron_cmd);
# Setup boot-time webmin cron
my $bcron = { 'module' => $module_name,
'func' => 'scheduled_collect_system_info',
'boot' => 1,
'args' => ['boot'],
};
&webmincron::create_webmin_cron($bcron);
}
else {
# Delete webmin crons (regular and boot-time)
foreach (1..2) {
my $cron = &webmincron::find_webmin_cron(
$module_name, 'scheduled_collect_system_info');
if ($cron) {
&webmincron::delete_webmin_cron($cron);
}
}
}
}
# get_current_drive_temps()
# Returns a list of hashes, containing device and temp keys
sub get_current_drive_temps
{
my @rv;
if (!$config{'collect_notemp'} &&
&foreign_installed("smart-status")) {
&foreign_require("smart-status");
foreach my $d (&smart_status::list_smart_disks_partitions()) {
my $st = &smart_status::get_drive_status($d->{'device'}, $d);
foreach my $a (@{$st->{'attribs'}}) {
if (($a->[0] =~ /^Temperature\s+Celsius$/i ||
$a->[0] =~ /^Temperature$/i ||
$a->[0] =~ /^Airflow\s+Temperature\s+Cel/i) &&
$a->[1] > 0) {
push(@rv, { 'device' => $d->{'device'},
'temp' => int($a->[1]),
'errors' => $st->{'errors'},
'failed' => !$st->{'check'} });
last;
}
}
}
}
return @rv;
}
# scheduled_collect_system_info([manual])
# Called by Webmin Cron to collect system info
sub scheduled_collect_system_info
{
my ($manual) = @_;
my $start = time();
# Make sure we are not already running
if (&test_lock($collected_info_file)) {
print STDERR "scheduled_collect_system_info : Already running\n";
return;
}
# Don't diff collected file
$gconfig{'logfiles'} = 0;
$gconfig{'logfullfiles'} = 0;
$WebminCore::gconfig{'logfiles'} = 0;
$WebminCore::gconfig{'logfullfiles'} = 0;
$no_log_file_changes = 1;
&lock_file($collected_info_file);
my $info = &collect_system_info($manual);
if ($info) {
&save_collected_info($info);
&add_historic_collected_info($info, $start);
}
&unlock_file($collected_info_file);
}
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