diff options
author | Côme Chilliet <come.chilliet@nextcloud.com> | 2022-08-01 12:34:28 +0300 |
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committer | Côme Chilliet <come.chilliet@nextcloud.com> | 2022-08-02 17:07:32 +0300 |
commit | 6de71bdaa0b0c2147f57100f971021adb874d612 (patch) | |
tree | 0c8ba47547e5b88a71dad7861f418328a856f004 /lib/private | |
parent | f1fdc90fa34b8bc4043dbfb260a875af79fff65f (diff) |
Align copied file with our code style
Signed-off-by: Côme Chilliet <come.chilliet@nextcloud.com>
Diffstat (limited to 'lib/private')
-rw-r--r-- | lib/private/Http/IpUtils.php | 362 |
1 files changed, 178 insertions, 184 deletions
diff --git a/lib/private/Http/IpUtils.php b/lib/private/Http/IpUtils.php index f1e8c59edb9..cc2bba06dbb 100644 --- a/lib/private/Http/IpUtils.php +++ b/lib/private/Http/IpUtils.php @@ -15,188 +15,182 @@ namespace OC\Http; * * @author Fabien Potencier <fabien@symfony.com> */ -class IpUtils -{ - private static $checkedIps = []; - - /** - * This class should not be instantiated. - */ - private function __construct() - { - } - - /** - * Checks if an IPv4 or IPv6 address is contained in the list of given IPs or subnets. - * - * @param string|array $ips List of IPs or subnets (can be a string if only a single one) - * - * @return bool - */ - public static function checkIp(?string $requestIp, $ips) - { - if (null === $requestIp) { - trigger_deprecation('symfony/http-foundation', '5.4', 'Passing null as $requestIp to "%s()" is deprecated, pass an empty string instead.', __METHOD__); - - return false; - } - - if (!\is_array($ips)) { - $ips = [$ips]; - } - - $method = substr_count($requestIp, ':') > 1 ? 'checkIp6' : 'checkIp4'; - - foreach ($ips as $ip) { - if (self::$method($requestIp, $ip)) { - return true; - } - } - - return false; - } - - /** - * Compares two IPv4 addresses. - * In case a subnet is given, it checks if it contains the request IP. - * - * @param string $ip IPv4 address or subnet in CIDR notation - * - * @return bool Whether the request IP matches the IP, or whether the request IP is within the CIDR subnet - */ - public static function checkIp4(?string $requestIp, string $ip) - { - if (null === $requestIp) { - trigger_deprecation('symfony/http-foundation', '5.4', 'Passing null as $requestIp to "%s()" is deprecated, pass an empty string instead.', __METHOD__); - - return false; - } - - $cacheKey = $requestIp.'-'.$ip; - if (isset(self::$checkedIps[$cacheKey])) { - return self::$checkedIps[$cacheKey]; - } - - if (!filter_var($requestIp, \FILTER_VALIDATE_IP, \FILTER_FLAG_IPV4)) { - return self::$checkedIps[$cacheKey] = false; - } - - if (str_contains($ip, '/')) { - [$address, $netmask] = explode('/', $ip, 2); - - if ('0' === $netmask) { - return self::$checkedIps[$cacheKey] = filter_var($address, \FILTER_VALIDATE_IP, \FILTER_FLAG_IPV4); - } - - if ($netmask < 0 || $netmask > 32) { - return self::$checkedIps[$cacheKey] = false; - } - } else { - $address = $ip; - $netmask = 32; - } - - if (false === ip2long($address)) { - return self::$checkedIps[$cacheKey] = false; - } - - return self::$checkedIps[$cacheKey] = 0 === substr_compare(sprintf('%032b', ip2long($requestIp)), sprintf('%032b', ip2long($address)), 0, $netmask); - } - - /** - * Compares two IPv6 addresses. - * In case a subnet is given, it checks if it contains the request IP. - * - * @author David Soria Parra <dsp at php dot net> - * - * @see https://github.com/dsp/v6tools - * - * @param string $ip IPv6 address or subnet in CIDR notation - * - * @return bool - * - * @throws \RuntimeException When IPV6 support is not enabled - */ - public static function checkIp6(?string $requestIp, string $ip) - { - if (null === $requestIp) { - trigger_deprecation('symfony/http-foundation', '5.4', 'Passing null as $requestIp to "%s()" is deprecated, pass an empty string instead.', __METHOD__); - - return false; - } - - $cacheKey = $requestIp.'-'.$ip; - if (isset(self::$checkedIps[$cacheKey])) { - return self::$checkedIps[$cacheKey]; - } - - if (!((\extension_loaded('sockets') && \defined('AF_INET6')) || @inet_pton('::1'))) { - throw new \RuntimeException('Unable to check Ipv6. Check that PHP was not compiled with option "disable-ipv6".'); - } - - if (str_contains($ip, '/')) { - [$address, $netmask] = explode('/', $ip, 2); - - if ('0' === $netmask) { - return (bool) unpack('n*', @inet_pton($address)); - } - - if ($netmask < 1 || $netmask > 128) { - return self::$checkedIps[$cacheKey] = false; - } - } else { - $address = $ip; - $netmask = 128; - } - - $bytesAddr = unpack('n*', @inet_pton($address)); - $bytesTest = unpack('n*', @inet_pton($requestIp)); - - if (!$bytesAddr || !$bytesTest) { - return self::$checkedIps[$cacheKey] = false; - } - - for ($i = 1, $ceil = ceil($netmask / 16); $i <= $ceil; ++$i) { - $left = $netmask - 16 * ($i - 1); - $left = ($left <= 16) ? $left : 16; - $mask = ~(0xFFFF >> $left) & 0xFFFF; - if (($bytesAddr[$i] & $mask) != ($bytesTest[$i] & $mask)) { - return self::$checkedIps[$cacheKey] = false; - } - } - - return self::$checkedIps[$cacheKey] = 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 - { - $wrappedIPv6 = false; - if ('[' === substr($ip, 0, 1) && ']' === substr($ip, -1, 1)) { - $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; - } +class IpUtils { + private static $checkedIps = []; + + /** + * This class should not be instantiated. + */ + private function __construct() { + } + + /** + * Checks if an IPv4 or IPv6 address is contained in the list of given IPs or subnets. + * + * @param string|array $ips List of IPs or subnets (can be a string if only a single one) + * + * @return bool + */ + public static function checkIp(?string $requestIp, $ips) { + if (null === $requestIp) { + trigger_deprecation('symfony/http-foundation', '5.4', 'Passing null as $requestIp to "%s()" is deprecated, pass an empty string instead.', __METHOD__); + + return false; + } + + if (!\is_array($ips)) { + $ips = [$ips]; + } + + $method = substr_count($requestIp, ':') > 1 ? 'checkIp6' : 'checkIp4'; + + foreach ($ips as $ip) { + if (self::$method($requestIp, $ip)) { + return true; + } + } + + return false; + } + + /** + * Compares two IPv4 addresses. + * In case a subnet is given, it checks if it contains the request IP. + * + * @param string $ip IPv4 address or subnet in CIDR notation + * + * @return bool Whether the request IP matches the IP, or whether the request IP is within the CIDR subnet + */ + public static function checkIp4(?string $requestIp, string $ip) { + if (null === $requestIp) { + trigger_deprecation('symfony/http-foundation', '5.4', 'Passing null as $requestIp to "%s()" is deprecated, pass an empty string instead.', __METHOD__); + + return false; + } + + $cacheKey = $requestIp.'-'.$ip; + if (isset(self::$checkedIps[$cacheKey])) { + return self::$checkedIps[$cacheKey]; + } + + if (!filter_var($requestIp, \FILTER_VALIDATE_IP, \FILTER_FLAG_IPV4)) { + return self::$checkedIps[$cacheKey] = false; + } + + if (str_contains($ip, '/')) { + [$address, $netmask] = explode('/', $ip, 2); + + if ('0' === $netmask) { + return self::$checkedIps[$cacheKey] = filter_var($address, \FILTER_VALIDATE_IP, \FILTER_FLAG_IPV4); + } + + if ($netmask < 0 || $netmask > 32) { + return self::$checkedIps[$cacheKey] = false; + } + } else { + $address = $ip; + $netmask = 32; + } + + if (false === ip2long($address)) { + return self::$checkedIps[$cacheKey] = false; + } + + return self::$checkedIps[$cacheKey] = 0 === substr_compare(sprintf('%032b', ip2long($requestIp)), sprintf('%032b', ip2long($address)), 0, $netmask); + } + + /** + * Compares two IPv6 addresses. + * In case a subnet is given, it checks if it contains the request IP. + * + * @author David Soria Parra <dsp at php dot net> + * + * @see https://github.com/dsp/v6tools + * + * @param string $ip IPv6 address or subnet in CIDR notation + * + * @return bool + * + * @throws \RuntimeException When IPV6 support is not enabled + */ + public static function checkIp6(?string $requestIp, string $ip) { + if (null === $requestIp) { + trigger_deprecation('symfony/http-foundation', '5.4', 'Passing null as $requestIp to "%s()" is deprecated, pass an empty string instead.', __METHOD__); + + return false; + } + + $cacheKey = $requestIp.'-'.$ip; + if (isset(self::$checkedIps[$cacheKey])) { + return self::$checkedIps[$cacheKey]; + } + + if (!((\extension_loaded('sockets') && \defined('AF_INET6')) || @inet_pton('::1'))) { + throw new \RuntimeException('Unable to check Ipv6. Check that PHP was not compiled with option "disable-ipv6".'); + } + + if (str_contains($ip, '/')) { + [$address, $netmask] = explode('/', $ip, 2); + + if ('0' === $netmask) { + return (bool) unpack('n*', @inet_pton($address)); + } + + if ($netmask < 1 || $netmask > 128) { + return self::$checkedIps[$cacheKey] = false; + } + } else { + $address = $ip; + $netmask = 128; + } + + $bytesAddr = unpack('n*', @inet_pton($address)); + $bytesTest = unpack('n*', @inet_pton($requestIp)); + + if (!$bytesAddr || !$bytesTest) { + return self::$checkedIps[$cacheKey] = false; + } + + for ($i = 1, $ceil = ceil($netmask / 16); $i <= $ceil; ++$i) { + $left = $netmask - 16 * ($i - 1); + $left = ($left <= 16) ? $left : 16; + $mask = ~(0xFFFF >> $left) & 0xFFFF; + if (($bytesAddr[$i] & $mask) != ($bytesTest[$i] & $mask)) { + return self::$checkedIps[$cacheKey] = false; + } + } + + return self::$checkedIps[$cacheKey] = 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 { + $wrappedIPv6 = false; + if ('[' === substr($ip, 0, 1) && ']' === substr($ip, -1, 1)) { + $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; + } } |