How to set an auto update script for your dynamic dns name for asterisk/freepbx

<button><br /> #!/usr/bin/php -q<br /> <?php<br /> // update the exterip of your asterisk/freepbx server<br /> // using dynamic dns<br /> // by: Doug Dalton<br /> // ddalton at shortbus.net<br /> // Documentation:<br /> // add a cron job :<br /> // * * * * * asterisk_extern_ip.sh <br /> //edit these variables<br /> $your_ddns_name="yourdynamicname.gotdns.com";<br /> $your_restart_command='/usr/sbin/rasterisk -rx "reload"';<br /> $your_sip_nat_conf="/etc/asterisk/sip_nat.conf";<br /> //Dont edit below this line</p> <p>$ip = gethostbyname($your_ddns_name);<br /> $conf_file= file_get_contents($your_sip_nat_conf);</p> <p>// Place each line of $userfile into array<br /> $lines = explode("\n",$conf_file);<br /> $found=false;<br /> $write=false;<br /> $conf_str="";<br /> foreach ($lines as $line) {</p> <p> @list($attr, $var) = explode("=", $line);<br /> $attr=strtolower(trim($attr));<br /> $var=trim($var);<br /> if ($attr=="externip")<br /> {<br /> $found=true;<br /> if ($var!=$ip)<br /> {<br /> $write=true;<br /> $conf_str.="externip=$ip\n";<br /> }<br /> }<br /> else<br /> $conf_str.=$line."\n";<br /> }</p> <p>if (!$found)<br /> {<br /> $write=true;<br /> $conf_str.="externip=$ip";<br /> }</p> <p>if ($write)<br /> {<br /> if (is_writable($your_sip_nat_conf)) {<br /> if (!$handle = fopen($your_sip_nat_conf, 'w')) {<br /> echo "Cannot open file ($your_sip_nat_conf)";<br /> exit;<br /> }<br /> if (fwrite($handle, $conf_str) === FALSE) {<br /> echo "Cannot write to file ($your_sip_nat_conf)";<br /> exit;<br /> }<br /> fclose($handle);</p> <p>} else {<br /> echo "The file $your_sip_nat_conf is not writable";<br /> }<br /> system($your_restart_command);<br /> }<br /> ?><br /> <br /> </button>