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|
#!/usr/bin/perl
#
# Module: vyatta-poweroff.pl
#
# **** License ****
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License version 2 as
# published by the Free Software Foundation.
#
# This program is distributed in the hope that it will be useful, but
# WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
# General Public License for more details.
#
# This code was originally developed by Vyatta, Inc.
# Portions created by Vyatta are Copyright (C) 2007 Vyatta, Inc.
# All Rights Reserved.
#
# Based on the original vyatta-reboot script by Stig Thormodsrud
#
# Author: Alex Harpin
# Date: Jan 2015
# Description: Script to shutdown or schedule a shutdown
#
# **** End License ****
#
use lib "/opt/vyatta/share/perl5/";
use Getopt::Long;
use POSIX;
use IO::Prompt;
use Sys::Syslog qw(:standard :macros);
use strict;
use warnings;
my $poweroff_job_file = '/var/run/poweroff.job';
sub parse_at_output {
my @lines = @_;
foreach my $line (@lines) {
if ($line =~ /error/) {
return (1, '', '');
} elsif ($line =~ /job (\d+) (.*)$/) {
return (0, $1, $2);
}
}
return (1, '', '');
}
sub is_poweroff_pending {
if ( ! -f $poweroff_job_file) {
return (0, '');
}
my $job = `cat $poweroff_job_file`;
chomp $job;
my $line = `atq $job`;
if ($line =~ /\d+\s+(.*)\sa root$/) {
return (1, $1);
} else {
return (0, '');
}
}
sub do_poweroff {
my $login = shift;
syslog("warning", "Poweroff now requested by $login");
if (!system("sudo /sbin/shutdown -h now")) {
exec("sudo /usr/bin/killall sshd");
}
}
sub cancel_poweroff {
my ($login, $time) = @_;
my $job = `cat $poweroff_job_file`;
chomp $job;
system("atrm $job");
system("rm $poweroff_job_file");
syslog("warning", "Poweroff scheduled for [$time] - CANCELED by $login");
}
my ($action, $at_time, $now);
GetOptions("action=s" => \$action,
"at_time=s" => \$at_time,
"now!" => \$now,
);
if (! defined $action) {
die "no action specified";
}
openlog($0, "", LOG_USER);
my $login = getlogin() || getpwuid($<) || "unknown";
if ($action eq "poweroff") {
my ($rc, $time) = is_poweroff_pending();
if ($rc) {
if (defined $now) {
cancel_poweroff($login, $time);
do_poweroff($login);
} else {
print "Poweroff already scheduled for [$time]\n";
exit 1;
}
}
if (defined $now) {
do_poweroff($login);
} else {
if (prompt("Proceed with poweroff? (Yes/No) [No] ", -ynd=>"n")) {
do_poweroff($login);
} else {
print "Poweroff canceled\n";
exit 1;
}
}
}
if ($action eq "poweroff_at") {
if (! -f '/usr/bin/at') {
die "Package [at] not installed";
}
if (! defined $at_time) {
die "no at_time specified";
}
my ($rc, $rtime) = is_poweroff_pending();
if ($rc) {
print "Poweroff already scheduled for [$rtime]\n";
exit 1;
}
my @lines = `echo true | at $at_time 2>&1`;
my ($err, $job, $time) = parse_at_output(@lines);
if ($err) {
print "Invalid time format [$at_time]\n";
exit 1;
}
system("atrm $job");
print "\nPoweroff scheduled for $time\n\n";
if (!prompt("Proceed with poweroff schedule? [confirm] ", -y1d=>"y")) {
print "Poweroff canceled\n";
exit 1;
}
@lines = `echo "sudo /sbin/shutdown -h now && sudo /usr/bin/killall sshd" | at $at_time 2>&1`;
($err, $job, $time) = parse_at_output(@lines);
if ($err) {
print "Error: unable to schedule poweroff\n";
exit 1;
}
system("echo $job > $poweroff_job_file");
print "\nPoweroff scheduled for $time\n";
syslog("warning", "Poweroff scheduled for [$time] by $login");
exit 0;
}
if ($action eq "poweroff_cancel") {
my ($rc, $time) = is_poweroff_pending();
if (! $rc) {
print "No poweroff currently scheduled\n";
exit 1;
}
cancel_poweroff($login, $time);
print "Poweroff canceled\n";
exit 0;
}
if ($action eq "show_poweroff") {
my ($rc, $time) = is_poweroff_pending();
if ($rc) {
print "Poweroff scheduled for [$time]\n";
exit 0;
} else {
print "No poweroff currently scheduled\n";
}
exit 1;
}
exit 1;
|
