PHPMatsuri 2011 内の「闇PHPMatsuri」で発表したスライド。

1. IPv6 PHP
@koyhoge

2. about koyhoge
✤ Programmer
✤ id:koyhoge
✤ / Agilemedia Network
✤ PHP 2011

3. IPv6
✤ 10
✤ IPv4

4. IPv6
✤ 128
✤ 0000:0000:0000:0000:0000:0000:0000:0000
✤ 16 0-9a-f

5. example
✤ 2001:0db8:0000:000:
d1ce:0000:0000:0001

6. ✤ 0
✤ 0 ::

7. case-insense
✤ abcdef ABCDEF OK

8. Valiation
✤ 2001:db8::d1ce:0:0:0001
✤ 2001:db8::d1ce:0:0:1
✤ 2001:db8:0:0:d1ce::1
✤ 2001:DB8:0:0:D1CE::1
✤ 2001:0DB8:0:0:D1CE::1

9. comparation probrem
✤
IPv6
✤

10. RFC5952
✤ A Recommendation for IPv6
Address T Representation
ext
✤
✤ @NEC
✤ @NEC

11. Rules
✤ 16-Bit Field “0”
✤ “::”
✤ 16-Bit 0 Field “0000”
“::”

12. Rules (cont.)
✤ “::” Field
16-Bit 0
Field Field

13. Rules (last)
✤ “a” “f”

14. Normalized!
✤ 2001:db8::d1ce:0:0:1

15. RegExp?
✤ IPv6 Address Validation
✤ http://oldsite2.dartware.com/
ipv6regex

16. !
/^s*((([0-9A-Fa-f]{1,4}:){7}([0-9A-Fa-f]{1,4}|:))|(([0-9A-Fa-f]{1,4}:){6}(:[0-9A-Fa-f]{1,4}|
((25[0-5]|2[0-4]d|1dd|[1-9]?d)(.(25[0-5]|2[0-4]d|1dd|[1-9]?d)){3})|:))|(([0-9A-Fa-f]
{1,4}:){5}(((:[0-9A-Fa-f]{1,4}){1,2})|:((25[0-5]|2[0-4]d|1dd|[1-9]?d)(.(25[0-5]|2[0-4]d|
1dd|[1-9]?d)){3})|:))|(([0-9A-Fa-f]{1,4}:){4}(((:[0-9A-Fa-f]{1,4}){1,3})|((:[0-9A-Fa-f]{1,4})?:
((25[0-5]|2[0-4]d|1dd|[1-9]?d)(.(25[0-5]|2[0-4]d|1dd|[1-9]?d)){3}))|:))|(([0-9A-Fa-f]
{1,4}:){3}(((:[0-9A-Fa-f]{1,4}){1,4})|((:[0-9A-Fa-f]{1,4}){0,2}:((25[0-5]|2[0-4]d|1dd|[1-9]?
d)(.(25[0-5]|2[0-4]d|1dd|[1-9]?d)){3}))|:))|(([0-9A-Fa-f]{1,4}:){2}(((:[0-9A-Fa-f]{1,4})
{1,5})|((:[0-9A-Fa-f]{1,4}){0,3}:((25[0-5]|2[0-4]d|1dd|[1-9]?d)(.(25[0-5]|2[0-4]d|1dd|
[1-9]?d)){3}))|:))|(([0-9A-Fa-f]{1,4}:){1}(((:[0-9A-Fa-f]{1,4}){1,6})|((:[0-9A-Fa-f]{1,4}){0,4}:
((25[0-5]|2[0-4]d|1dd|[1-9]?d)(.(25[0-5]|2[0-4]d|1dd|[1-9]?d)){3}))|:))|(:(((:[0-9A-Fa-
f]{1,4}){1,7})|((:[0-9A-Fa-f]{1,4}){0,5}:((25[0-5]|2[0-4]d|1dd|[1-9]?d)(.(25[0-5]|2[0-4]d|
1dd|[1-9]?d)){3}))|:)))(%.+)?s*$/

17. In PHP?
✤ PEAR::Net_IPv6
✤ http://pear.php.net/package/
net_ipv6/
✤ Author: Alexander Merz

18. Net_IPv6::compress
✤ OK
✤

19. incompatible rule
✤ 16-Bit 0 Field “0000”
“::”

20. Send a patch
function recommendedFormat($ip) {
$compressed = self::compress($ip, true);
// RFC5952 4.2.2
// The symbol "::" MUST NOT be used to shorten just one
// 16-bit 0 field.
if ((substr_count($compressed, ':') == 7) &&
(strpos($compressed, '::') !== false)) {
$compressed = str_replace('::', ':0:', $compressed);
}
return $compressed;
}

21. patch accepted
✤ http://pear.php.net/bugs/
bug.php?id=18687

22. Fin