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#!/usr/local/cpanel/3rdparty/bin/perl
# cpanel - scripts/verify_pidfile Copyright 2022 cPanel, L.L.C.
# All rights reserved.
# copyright@cpanel.net http://cpanel.net
# This code is subject to the cPanel license. Unauthorized copying is prohibited
use strict;
use Cpanel::SafeFile ();
use Cpanel::Services ();
use IO::Handle ();
my ( $user, $service, $pidfile, $regex ) = @ARGV;
if ( !length $user || !length $service || !length $pidfile ) {
usage();
exit 1;
}
my %args = (
'user' => $user,
'service' => $service,
);
if ( length $regex ) {
$args{'regex'} = $regex;
}
my $time_boundary = time;
my $ps_info_for = Cpanel::Services::get_running_process_info(%args);
if ( !exists $ps_info_for->{$service} ) {
print STDERR "$service does not appear to be running as user $user\n";
if ( $time_boundary > ( stat $pidfile )[9] ) {
remove_pidfile($pidfile) if -e $pidfile;
}
exit 2;
}
if ( -e $pidfile ) {
my $pid = read_pidfile($pidfile);
if ( $ps_info_for->{$service}{'pid'} ne $pid ) {
print STDERR "Pidfile for $service does not appear to match running pid $pid\n";
exit 3;
}
}
else {
print STDERR "$service is running but pidfile is missing\n";
exit 4;
}
exit 0;
sub usage {
print "Usage: $0 USER SERVICE PIDFILE [REGEX]\n";
}
sub remove_pidfile {
my ($pidfile) = @_;
system 'rm', '-f', $pidfile;
}
sub read_pidfile {
my ($pidfile) = @_;
my $fh = IO::Handle->new();
my $lock = Cpanel::SafeFile::safeopen( $fh, '<', $pidfile );
if ( !$lock ) {
print STDERR 'Unable to open pid file for reading: ' . $pidfile;
exit 1;
}
my $pid = do { local $/; <$fh> };
if ( !Cpanel::SafeFile::safeclose( $fh, $lock ) ) {
print STDERR 'Safeclose of pid file failed: ' . $pidfile;
exit 1;
}
chomp $pid;
return $pid;
}