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<?php |
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/** |
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* Copyright 2015 François Kooman <[email protected]>. |
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* |
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* Licensed under the Apache License, Version 2.0 (the "License"); |
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* you may not use this file except in compliance with the License. |
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* You may obtain a copy of the License at |
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* |
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* http://www.apache.org/licenses/LICENSE-2.0 |
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* |
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* Unless required by applicable law or agreed to in writing, software |
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* distributed under the License is distributed on an "AS IS" BASIS, |
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
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* See the License for the specific language governing permissions and |
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* limitations under the License. |
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*/ |
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namespace fkooman\VPN\Server; |
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use InvalidArgumentException; |
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class IPv6 |
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{ |
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/** @var string */ |
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private $ip; |
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/** @var int */ |
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private $prefix; |
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View Code Duplication |
public function __construct($prefixIp) |
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{ |
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// must be of form IP/PREFIX |
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if (1 !== substr_count($prefixIp, '/')) { |
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throw new InvalidArgumentException('not a prefix'); |
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} |
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list($ip, $prefix) = explode('/', $prefixIp); |
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// check IP |
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self::validateIP($ip); |
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$this->ip = inet_ntop(inet_pton($ip)); |
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// check prefix |
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if (!is_numeric($prefix) || 0 > $prefix || 64 < $prefix) { |
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throw new InvalidArgumentException('invalid prefix, must be <= /64'); |
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} |
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$this->prefix = intval($prefix); |
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} |
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public function getRange() |
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{ |
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return sprintf('%s/%d', $this->ip, $this->prefix); |
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} |
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/** |
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* Split the provided range in $no /64s. |
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*/ |
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public function splitRange($no) |
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{ |
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// XXX must be at least /60 |
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$bitIp = inet_pton($this->ip); |
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$hexIp = bin2hex($bitIp); |
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$splitIp = str_split($hexIp, 4); |
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$ranges = []; |
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for ($i = 0; $i < $no; ++$i) { |
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// the last 4 fields become 0, the last digit of field 3 becomes 0, and 1, ... |
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$splitIp[3] = dechex( |
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( |
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hexdec($splitIp[3]) & 0xfff0 |
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) + $i |
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); |
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$splitIp[4] = 0; |
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$splitIp[5] = 0; |
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$splitIp[6] = 0; |
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$splitIp[7] = 0; |
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$rangeIp = inet_ntop(inet_pton(implode($splitIp, ':'))); |
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$ranges[] = $rangeIp.'/64'; |
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} |
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return $ranges; |
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} |
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private static function validateIP($ip) |
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{ |
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if (false === filter_var($ip, FILTER_VALIDATE_IP, FILTER_FLAG_IPV6)) { |
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throw new InvalidArgumentException('invalid IP address'); |
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} |
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} |
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} |
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eduVPN /
vpn-server-api
Duplicated code is one of the most pungent code smells. If you need to duplicate the same code in three or more different places, we strongly encourage you to look into extracting the code into a single class or operation.
You can also find more detailed suggestions in the “Code” section of your repository.