. All rights reserved. * * See LICENSE for more details. * * @category Networking * @package Net_DNS2 * @author Mike Pultz * @copyright 2020 Mike Pultz * @license http://www.opensource.org/licenses/bsd-license.php BSD License * @link https://netdns2.com/ * @since File available since Release 1.0.1 * */ /** * WKS Resource Record - RFC1035 section 3.4.2 * * +--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+ * | ADDRESS | * +--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+ * | PROTOCOL | | * +--+--+--+--+--+--+--+--+ | * | | * / / * / / * +--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+ * */ class Net_DNS2_RR_WKS extends Net_DNS2_RR { /* * The IP address of the service */ public $address; /* * The protocol of the service */ public $protocol; /* * bitmap */ public $bitmap = []; /** * method to return the rdata portion of the packet as a string * * @return string * @access protected * */ protected function rrToString() { $data = $this->address . ' ' . $this->protocol; foreach ($this->bitmap as $port) { $data .= ' ' . $port; } return $data; } /** * parses the rdata portion from a standard DNS config line * * @param array $rdata a string split line of values for the rdata * * @return boolean * @access protected * */ protected function rrFromString(array $rdata) { $this->address = strtolower(trim(array_shift($rdata), '.')); $this->protocol = array_shift($rdata); $this->bitmap = $rdata; return true; } /** * parses the rdata of the Net_DNS2_Packet object * * @param Net_DNS2_Packet &$packet a Net_DNS2_Packet packet to parse the RR from * * @return boolean * @access protected * */ protected function rrSet(Net_DNS2_Packet &$packet) { if ($this->rdlength > 0) { // // get the address and protocol value // $x = unpack('Naddress/Cprotocol', $this->rdata); $this->address = long2ip($x['address']); $this->protocol = $x['protocol']; // // unpack the port list bitmap // $port = 0; foreach (unpack('@5/C*', $this->rdata) as $set) { $s = sprintf('%08b', $set); for ($i=0; $i<8; $i++, $port++) { if ($s[$i] == '1') { $this->bitmap[] = $port; } } } return true; } return false; } /** * returns the rdata portion of the DNS packet * * @param Net_DNS2_Packet &$packet a Net_DNS2_Packet packet use for * compressed names * * @return mixed either returns a binary packed * string or null on failure * @access protected * */ protected function rrGet(Net_DNS2_Packet &$packet) { if (strlen($this->address) > 0) { $data = pack('NC', ip2long($this->address), $this->protocol); $ports = []; $n = 0; foreach ($this->bitmap as $port) { $ports[$port] = 1; if ($port > $n) { $n = $port; } } for ($i=0; $ioffset += strlen($data); return $data; } return null; } }