<?php

//Super Q&D.  Monitors a single FTP directory for new files.
//Modify the vars below and run as 'php ftpmon.php'.
//Notification is via growlnotify, which requires purchase of growl.


$host = "ftp.host.com";
$user = "ftpuser";
$pass = "secret";
$dir = "/somedir/";
$sleeptime = 60;
date_default_timezone_set('America/Chicago');

function notify($title, $message) {
   system("growlnotify -t '$title' -m '$message' -s");
}

//---------------------------------------

set_time_limit(0); //infinite

$mtime = '';
$mdate = '';
$mmonth = '';
$mname = '';
$found = false;
while (!$found) {
   $conn = ftp_connect($host) or die("Couldn't connect\n");
   ftp_login($conn, $user, $pass) or die("Couldn't log in\n");
   $contents = ftp_rawlist($conn, "-lt $dir");
   sizeof($contents) or die("Couldn't get file listing\n");
   ftp_close($conn);

   $file = explode(' ', $contents[0]); //most-recent file.  Looks like this:
   /*
   array(15) {
     [0]=>
     string(10) "-rwxr--r--"
     [1]=>
     string(0) ""
     [2]=>
     string(0) ""
     [3]=>
     string(1) "1"
     [4]=>
     string(7) "user"
     [5]=>
     string(0) ""
     [6]=>
     string(7) "group"
     [7]=>
     string(0) ""
     [8]=>
     string(10) "2785658880"
     [9]=>
     string(3) "Aug"
     [10]=>
     string(2) "17"
     [11]=>
     string(5) "09:36"
     //12 is the filename.  Anything above 12 is because the filename has spaces in it.
     [12]=>
     string(6) "pics-2"
     [13]=>
     string(1) "-"
     [14]=>
     string(13) "condo-old.tar"
   }
   */
   //var_dump($file);

   if (strlen($mtime) == 0) {
      //init
      $mtime = $file[11];
      $mdate = $file[10];
      $mmonth = $file[9];
      $mname = $file[12]; //XXX Should grab everything 12+ in case of spaced filenames but this is just for UI

      echo "First run.  Most recent file is '$mname' at $mmonth $mdate $mtime\n";
      sleep($sleeptime);
      continue;
   }

   if ($file[11] != $mtime) {
      $found = true;
      echo date(DATE_ATOM) . " - notifying & exiting.\n";
      notify('FTP site updated', $contents[0]);
   } else {
      echo date(DATE_ATOM) . " - Not found, sleeping $sleeptime.\n";
      sleep($sleeptime);
   }
}