| 0,0 → 1,130 |
|---|
| <?php |
| |
| /* |
| * MAC utils for PHP |
| * Copyright 2017 Daniel Marschall, ViaThinkSoft |
| * Version 19 August 2017 |
| * |
| * Licensed under the Apache License, Version 2.0 (the "License"); |
| * you may not use this file except in compliance with the License. |
| * You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| |
| define('IEEE_MAC_REGISTRY', __DIR__ . '/../web-data'); |
| |
| function mac_valid($mac) { |
| $mac = str_replace(array('-', ':'), '', $mac); |
| $mac = strtoupper($mac); |
| |
| if (strlen($mac) != 12) return false; |
| |
| $mac = preg_replace('@[0-9A-F]@', '', $mac); |
| |
| return ($mac == ''); |
| } |
| |
| function _lookup_ieee_registry($file, $oui_name, $mac) { |
| $begin = substr($mac, 0, 2).'-'.substr($mac, 2, 2).'-'.substr($mac, 4, 2); |
| $f = file_get_contents($file); |
| |
| $f = str_replace("\r", '', $f); |
| |
| # We are using a positive-lookahead because entries like the MA-M references have a blank line between organization and address |
| preg_match_all('@^\s*'.preg_quote($begin, '@').'\s+\(hex\)\s+(\S+)\s+(.*)\n\n\s*(?=[0-9A-F])@ismU', "$f\n\nA", $m, PREG_SET_ORDER); |
| foreach ($m as $n) { |
| preg_match('@(\S+)\s+\(base 16\)(.*)$@ism', $n[2], $m); |
| |
| if (preg_match('@(.+)\-(.+)@ism', $m[1], $o)) { |
| $z = hexdec(substr($mac, 6, 6)); |
| $beg = hexdec($o[1]); |
| $end = hexdec($o[2]); |
| if (($z < $beg) || ($z > $end)) continue; |
| } else { |
| $beg = 0x000000; |
| $end = 0xFFFFFF; |
| } |
| |
| $x = trim(preg_replace('@^\s+@ism', '', $m[2])); |
| |
| # "PRIVATE" entries are only marked at the "(hex)" line, but not at the "(base16)" line |
| if ($x == '') $x = trim($n[1]); |
| |
| $x = explode("\n", $x); |
| |
| $ra_len = strlen(dechex($end-$beg)); |
| |
| $out = ''; |
| $out .= sprintf("%-24s 0x%s\n", "IEEE $oui_name part:", substr($mac, 0, 12-$ra_len)); |
| $out .= sprintf("%-24s 0x%s\n", "NIC specific part:", substr($mac, 12-$ra_len)); |
| $out .= sprintf("%-24s %s\n", "Registrant:", $x[0]); |
| foreach ($x as $n => $y) { |
| if ($n == 0) continue; |
| else if ($n == 1) $out .= sprintf("%-24s %s\n", "Address of registrant:", $y); |
| else if ($n >= 2) $out .= sprintf("%-24s %s\n", "", $y); |
| } |
| |
| // TODO: also print the date of last update of the OUI files |
| |
| return $out; |
| } |
| |
| return false; |
| } |
| |
| function decode_mac($mac) { |
| if (!mac_valid($mac)) return false; |
| |
| // Format MAC |
| $mac = strtoupper($mac); |
| $mac = preg_replace('@[^0-9A-F]@', '', $mac); |
| if (strlen($mac) != 12) { |
| # echo "Invalid MAC address\n"; |
| return false; |
| } |
| $mac_ = preg_replace('@^(..)(..)(..)(..)(..)(..)$@', '\\1-\\2-\\3-\\4-\\5-\\6', $mac); |
| echo sprintf("%-24s %s\n", "MAC address:", $mac_); |
| |
| // Empfaengergruppe |
| $ig = hexdec($mac[1]) & 1; // Bit #LSB+0 of Byte 1 |
| $ig_ = ($ig == 0) ? '[0] Individual' : '[1] Group'; |
| echo sprintf("%-24s %s\n", "I/G flag:", $ig_); |
| |
| // Vergabestelle |
| $ul = hexdec($mac[1]) & 2; // Bit #LSB+1 of Byte 1 |
| $ul_ = ($ul == 0) ? '[0] Universally Administered Address (UAA)' : '[1] Locally Administered Address (LAA)'; |
| echo sprintf("%-24s %s\n", "U/L flag:", $ul_); |
| |
| // Query IEEE registries |
| // TODO: gilt OUI nur bei Individual UAA? |
| if ( |
| ($x = _lookup_ieee_registry(IEEE_MAC_REGISTRY.'/mam.txt', 'OUI-28 (MA-M)', $mac)) || |
| ($x = _lookup_ieee_registry(IEEE_MAC_REGISTRY.'/oui36.txt', 'OUI-36 (MA-S)', $mac)) || |
| # The IEEE Registration Authority distinguishes between IABs and OUI-36 values. Both are 36-bit values which may be used to generate EUI-48 values, but IABs may not be used to generate EUI-64 values.[6] |
| # Note: The Individual Address Block (IAB) is an inactive registry activity, which has been replaced by the MA-S registry product as of January 1, 2014. |
| ($x = _lookup_ieee_registry(IEEE_MAC_REGISTRY.'/iab.txt', 'IAB', $mac)) |
| ) { |
| return $x; |
| } else { |
| return _lookup_ieee_registry(IEEE_MAC_REGISTRY.'/oui.txt', 'OUI-24 (MA-L)', $mac); |
| } |
| |
| // TODO |
| // FF-FF-FF-FF-FF-FF = Broadcast-Adresse |
| |
| // TODO |
| // IP-Multicast |
| // 01-00-5E-00-00-00 bis 01-00-5E-7F-FF-FF (unterste 23 bit der MAC = unterste 23 Bit der IP) ... |
| // 224.0.0.1 -> 01-00-5e-00-00-01 |
| // erste 4 Bits durch Class D konvention belegt. 5 bits sind unbekannt |
| |
| // TODO: VRRP |
| // 00-00-5E-00-01-ID |
| } |