26,8 → 26,8 |
const IEEE_MAC_REGISTRY = __DIR__ . '/../web-data'; |
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/** |
* Checks if a MAC, EUI, ELI, or IPv6-LinkLocal address is valid |
* @param string $mac MAC, EUI, or IPv6-LinkLocal Address |
* Checks if a MAC, EUI, ELI, or IPv6-Link-Local address is valid |
* @param string $mac MAC, EUI, or IPv6-Link-Local Address |
* @return bool True if it is valid |
*/ |
function mac_valid(string $mac): bool { |
56,10 → 56,10 |
} |
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/** |
* Canonizes a MAC, EUI, ELI, or IPv6-LinkLocal address |
* @param string $mac MAC, EUI, ELI, or IPv6-LinkLocal Address |
* Canonizes a MAC, EUI, ELI, or IPv6-Link-Local address |
* @param string $mac MAC, EUI, ELI, or IPv6-Link-Local Address |
* @param string $delimiter Desired delimiter for inserting between each octet |
* @return string|false The canonized address (Note: IPv6-Linklocal becomes EUI-64) |
* @return string|false The canonized address (Note: IPv6-Link-Local becomes EUI-64) |
*/ |
function mac_canonize(string $mac, string $delimiter="-") { |
if (!mac_valid($mac)) return false; |
212,8 → 212,8 |
} |
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/** |
* Try to convert IPv6-LinkLocal address to MAC-48 |
* @param string $ipv6 IPv6-LinkLocal address |
* Try to convert IPv6-Link-Local address to MAC-48 |
* @param string $ipv6 IPv6-Link-Local address |
* @return false|string MAC-48 (or IPv6 if it was no LinkLocal address, or Modified EUI-64 if it decapsulation failed) |
*/ |
function ipv6linklocal_to_mac48(string $ipv6) { |
223,7 → 223,7 |
$hex = unpack("H*hex", $tmp); |
$ipv6 = substr(preg_replace("/([A-f0-9]{4})/", "$1:", $hex['hex']), 0, -1); |
|
// Remove "fe80::" to convert IPv6 Link Local address back to EUI-64 |
// Remove "fe80::" to convert IPv6-Link-Local address back to EUI-64 |
// see https://support.lenovo.com/de/de/solutions/ht509925-how-to-convert-a-mac-address-into-an-ipv6-link-local-address-eui-64 |
$cnt = 0; |
$mac = preg_replace('@^fe80:0000:0000:0000:@i', '', $ipv6, -1, $cnt); |
242,7 → 242,7 |
} |
|
/** |
* Converts MAC-48 or EUI-48 to IPv6-LinkLocal (based on Modified EUI-64) |
* Converts MAC-48 or EUI-48 to IPv6-Link-Local (based on Modified EUI-64) |
* @param string $mac |
* @return false|string |
*/ |
257,8 → 257,8 |
} |
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/** |
* Prints information about an IPv6-LinkLocal address, MAC, EUI, or ELI. |
* @param string $mac IPv6-LinkLocal address, MAC, EUI, or ELI |
* Prints information about an IPv6-Link-Local address, MAC, EUI, or ELI. |
* @param string $mac IPv6-Link-Local address, MAC, EUI, or ELI |
* @return void |
* @throws Exception |
*/ |
309,9 → 309,11 |
if ($mac[1] == 'A') { |
// Note: There does not seem to exist an algorithm for converting ELI-48 <=> ELI-64 |
echo sprintf("%-32s %s\n", "ELI-".eui_bits($mac).":", mac_canonize($mac)); |
$mac48 = eui64_to_eui48($mac); |
echo sprintf("%-32s %s\n", "MAC-48 (Local):", (eui_bits($mac48) != 48) ? 'Not available' : $mac48); |
} else { |
$eui48 = eui64_to_eui48($mac); |
echo sprintf("%-32s %s\n", "EUI-48:", (eui_bits($eui48) != 48) ? 'Not available' : $eui48); |
echo sprintf("%-32s %s\n", "EUI-48 or MAC-48:", (eui_bits($eui48) != 48) ? 'Not available' : $eui48); |
if (eui_bits($mac) == 48) { |
$eui64 = mac48_to_eui64($mac); |
echo sprintf("%-32s %s\n", "EUI-64:", ((eui_bits($eui64) != 64) ? 'Not available' : $eui64).' (MAC-48 to EUI-64 Encapsulation)'); |
320,7 → 322,7 |
$eui64 = maceui48_to_modeui64($mac); |
echo sprintf("%-32s %s\n", "", ((eui_bits($eui64) != 64) ? 'Not available' : $eui64).' (MAC/EUI-48 to Modified EUI-64 Encapsulation)'); |
$ipv6 = maceui_to_ipv6linklocal($mac); |
echo sprintf("%-32s %s\n", "IPv6 link local address:", $ipv6); |
echo sprintf("%-32s %s\n", "IPv6-Link-Local address:", $ipv6); |
} else { |
$eui64 = mac_canonize($mac); |
echo sprintf("%-32s %s\n", "EUI-64:", $eui64); |
478,7 → 480,8 |
if (mac_equals($mac, 'CF:00:00:00:00:00')) $app = 'Used for Ethernet loopback tests'; |
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// === FAQ "How to recognise a Broadcast MAC address application?" === |
if (mac_equals($mac, 'FF:FF:FF:FF:FF:FF')) echo sprintf("%-32s %s\n", "Special use:", "Broadcast messaging"); |
// According to https://standards.ieee.org/wp-content/uploads/import/documents/tutorials/eui.pdf FFFFFFFFFFFF can be used as NULL EUI |
if (mac_equals($mac, 'FF:FF:FF:FF:FF:FF')) echo sprintf("%-32s %s\n", "Special use:", "Broadcast messaging or Null-EUI"); |
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// === FAQ "How to recognise a Virtual Router ID by MAC address?" === |
// https://tools.ietf.org/html/rfc7042#section-5.1 |