check_ftp_download script

This is a script that tests the FTP site by downloading a specific file and verifying how long it takes to do so.
It also measures the bandwidth.
It uses curl PHP library to do the FTP part.
More of mine FTP related scripts
More Nagios FTP addons
script:
#!/usr/bin/php
<?php
// Script to connect to a FTP site and Download a file, return the time it took and compare to WARN and CRIT values
// Formated for Nagios usage
// Use a test user for the FTP as it could be simple to get this password
// I use a 5mb file, created by using: dd bs=1024 count=5120 skip=5120 if=/dev/sda of=file.tst
// by Felipe Ferreira http://felipeferreira.net
if($argc < 7){
echo “nPlease provide args <hostname> <user> <password> <ftpfolder> <filename> <warn> <crit>”;
echo “nExample: n check_ftp.php ftp.check.com anonymous pass /folder1010/ /tmp/file.txt 4 6 n n”;
exit(1);
}
$host =  $argv[1];
$userpass = $argv[2] . “:” . $argv[3];
$dir = $argv[4];
$filea  = $argv[5];
$warn = $argv[6];
$crit = $argv[7];
// ##################- FUNCTIONS -############33
function ByteSize($bytes)
{
$size = $bytes / 1024;
if($size < 1024)
{
$size = number_format($size, 2);
$size .= ‘ KB’;
}
else
{
if($size / 1024 < 1024)
{
$size = number_format($size / 1024, 2);
$size .= ‘ MB’;
}
else if ($size / 1024 / 1024 < 1024)
{
$size = number_format($size / 1024 / 1024, 2);
$size .= ‘ GB’;
}
}
return $size;
}
// ##############- END FUNCTIONS
$files = explode(“/”, $filea);
$file_name=$files[(count($files) -1 )];
// Example “ftp://user:pwd@ftp.server.com/test:21”);
$url2=$host .”:21″. $dir . $file_name;
$url=”ftp://” . $argv[2] . “:” . $argv[3] . “@” .  $url2;
$file = fopen($filea, “r”);
$file_down = “/tmp/$file_name”;
$file_size = filesize($file_down);
//echo “.Connecting  to $url and downloading $file_name to $file_down… n”;
$ch = curl_init();
curl_setopt($ch, CURLOPT_URL, $url);
curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
curl_setopt($ch, CURLOPT_FTP_USE_EPSV, FALSE);
//curl_setopt($ch, CURLOPT_VERBOSE, 1);
$fh = fopen($file_down, ‘w’) or die($php_errormsg);
curl_setopt($ch, CURLOPT_FILE, $fh);
$output = curl_exec($ch);
$info = curl_getinfo($ch);
curl_close($ch);
if ($output === FALSE) {
echo “UNKOWN – cURL Error: ” . curl_error($ch);
exit(3);
}
//echo “Upload_Size: ” . ByteSize($info[‘size_download’]) .”n”;
//echo “File_Sieze : ” . ByteSize($file_size) .”n”;
//print_r($info);
// If the upload size is differente the filesize, throws ERROR
if($file_size != $info[‘size_download’]) {
echo “CRITICAL – File .$file_name. was not downloaded, download_size=” . ByteSize($info[‘size_download’]) . ” ,file_size=” . ByteSize($file_size) . “!!n”;
exit(2);
};
$time_taken = substr(round($info[‘total_time’],1),0,1);
$band = ByteSize($info[‘speed_download’]);
// CONVERT STRING TO INTEGER
$time_taken = (int)$time_taken;
$warn = (int)$warn;
$crit = (int)$crit;
if ($time_taken > $crit) {
echo “CRITICAL – FTP to ” . $host . ” file ” .  $file_name . “(” . ByteSize($info[‘size_download’]) .”) took ” . $time_taken . ” secs. and Bandwidth of ” . $band. ” |DownloadTime=
” . $time_taken .”n”;
exit(1);
} elseif ($time_taken > $warn) {
echo “WARNING – FTP to ” . $host . ” file ” .  $file_name . “(” . ByteSize($info[‘size_download’]) .”) took ” . $time_taken . ” secs. and Bandwidth of ” . $band. ” |DownloadTime=”
. $time_taken .”n”;
exit(2);
} else {
echo “OK – FTP to ” . $host . ” file ” .  $file_name . “(” . ByteSize($info[‘size_download’]) .”) took ” . $time_taken . ” secs. and Bandwidth of ” . $band. ” |DownloadTime=” . $time_taken . “n”;
exit(0);
}
?>