tonyair/silverstripe-framework
1
0
Fork 0
mirror of https://github.com/silverstripe/silverstripe-framework synced 2024-10-01 13:48:37 +02:00
Code Issues Projects Releases Wiki Activity

add anonymize

Browse Source
This commit is contained in:
Thomas Portelange 2023-06-28 10:25:19 +02:00 committed by GitHub
parent 60ca35c02d
commit a969180433
No known key found for this signature in database
GPG Key ID: 4AEE18F83AFDEB23
1 changed files with 32 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

32
src/Control/Util/IPUtils.php
View File

@ -131,4 +131,36 @@ class IPUtils
return true;
}
/**
* Anonymizes an IP/IPv6.
*
* Removes the last byte for v4 and the last 8 bytes for v6 IPs
*/
public static function anonymize(string $ip): string
{
$wrappedIPv6 = false;
if (str_starts_with($ip, '[') && str_ends_with($ip, ']')) {
$wrappedIPv6 = true;
$ip = substr($ip, 1, -1);
}
$packedAddress = inet_pton($ip);
if (4 === \strlen($packedAddress)) {
$mask = '255.255.255.0';
} elseif ($ip === inet_ntop($packedAddress & inet_pton('::ffff:ffff:ffff'))) {
$mask = '::ffff:ffff:ff00';
} elseif ($ip === inet_ntop($packedAddress & inet_pton('::ffff:ffff'))) {
$mask = '::ffff:ff00';
} else {
$mask = 'ffff:ffff:ffff:ffff:0000:0000:0000:0000';
}
$ip = inet_ntop($packedAddress & inet_pton($mask));
if ($wrappedIPv6) {
$ip = '['.$ip.']';
}
return $ip;
}
}