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|
#!/usr/bin/perl
#
# Module: vyatta-reboot.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.
#
# Author: Stig Thormodsrud
# Date: May 2008
# Description: Script to reboot or schedule a reboot
#
# **** 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 $reboot_job_file = '/var/run/reboot.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_reboot_pending {
if ( ! -f $reboot_job_file) {
return (0, '');
}
my $job = `cat $reboot_job_file`;
chomp $job;
my $line = `atq $job`;
if ($line =~ /\d+\s+(.*)\sa root$/) {
return (1, $1);
} else {
return (0, '');
}
}
sub do_reboot {
my $login = shift;
syslog("warning", "Reboot now requested by $login");
exec("sudo /sbin/reboot");
}
sub cancel_reboot {
my ($login, $time) = @_;
my $job = `cat $reboot_job_file`;
chomp $job;
system("atrm $job");
system("rm $reboot_job_file");
syslog("warning", "Reboot scheduled for [$time] - CANCELED by $login");
}
#
# main
#
my ($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";
#
# reboot
#
if ($action eq "reboot") {
my ($rc, $time) = is_reboot_pending();
if ($rc) {
if (defined $now) {
cancel_reboot($login, $time);
do_reboot($login);
} else {
print "Reboot already scheduled for [$time]\n";
exit 1;
}
}
if (defined $now) {
do_reboot($login);
} else {
if (defined($ENV{VYATTA_PROCESS_CLIENT} && $ENV{VYATTA_PROCESS_CLIENT} eq 'gui2_rest') ||
prompt("Proceed with reboot? [confirm]", -y1d=>"y")) {
do_reboot($login);
} else {
print "Reboot canceled\n";
exit 1;
}
}
}
#
# reboot_at
#
if ($action eq "reboot_at") {
if (! -f '/usr/bin/at') {
die "Package [at] not installed";
}
if (! defined $at_time) {
die "no at_time specified";
}
my ($rc, $rtime) = is_reboot_pending();
if ($rc) {
print "Reboot already scheduled for [$rtime]\n";
exit 1;
}
#
# check if the time format is valid, then
# remove that job
#
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 "\nReload scheduled for $time\n\n";
if (!defined($ENV{VYATTA_PROCESS_CLIENT}) || $ENV{VYATTA_PROCESS_CLIENT} ne 'gui2_rest') {
if (! prompt("Proceed with reboot schedule? [confirm]", -y1d=>"y")) {
print "Reboot canceled\n";
exit 1;
}
}
@lines = `echo sudo /sbin/reboot | at $at_time 2>&1`;
($err, $job, $time) = parse_at_output(@lines);
if ($err) {
print "Error: unable to schedule reboot\n";
exit 1;
}
system("echo $job > $reboot_job_file");
print "\nReboot scheduled for $time\n";
syslog("warning", "Reboot scheduled for [$time] by $login");
exit 0;
}
#
# reboot_cancel
#
if ($action eq "reboot_cancel") {
my ($rc, $time) = is_reboot_pending();
if (! $rc) {
print "No reboot currently scheduled\n";
exit 1;
}
cancel_reboot($login, $time);
print "Reboot canceled\n";
exit 0;
}
#
# show_reboot
#
if ($action eq "show_reboot") {
my ($rc, $time) = is_reboot_pending();
if ($rc) {
print "Reboot scheduled for [$time]\n";
exit 0;
} else {
print "No reboot currently scheduled\n";
}
exit 1;
}
exit 1;
# end of file
|
