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1
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<?php |
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2
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3
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declare(strict_types = 1); |
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4
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5
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namespace Sop\X509\GeneralName; |
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6
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7
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class IPv6Address extends IPAddress |
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8
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{ |
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9
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/** |
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10
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* Initialize from octets. |
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11
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* |
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12
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* @param string $octets |
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13
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* |
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14
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* @throws \InvalidArgumentException |
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15
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* |
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16
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* @return self |
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17
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*/ |
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18
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11 |
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public static function fromOctets(string $octets): self |
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19
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{ |
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20
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11 |
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$mask = null; |
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21
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11 |
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$words = unpack('n*', $octets) ?: []; |
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22
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11 |
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switch (count($words)) { |
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23
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11 |
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case 8: |
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24
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9 |
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$ip = self::_wordsToIPv6String($words); |
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9 |
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break; |
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26
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2 |
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case 16: |
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27
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1 |
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$ip = self::_wordsToIPv6String(array_slice($words, 0, 8)); |
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28
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1 |
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$mask = self::_wordsToIPv6String(array_slice($words, 8, 8)); |
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29
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1 |
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break; |
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30
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default: |
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31
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1 |
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throw new \UnexpectedValueException('Invalid IPv6 octet length.'); |
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32
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} |
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33
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10 |
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return new self($ip, $mask); |
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34
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} |
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35
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36
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/** |
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37
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* Convert an array of 16 bit words to an IPv6 string representation. |
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38
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* |
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39
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* @param int[] $words |
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40
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* |
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41
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* @return string |
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42
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*/ |
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43
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10 |
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protected static function _wordsToIPv6String(array $words): string |
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44
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{ |
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45
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10 |
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$groups = array_map( |
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function ($word) { |
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47
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10 |
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return sprintf('%04x', $word); |
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48
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10 |
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}, $words); |
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49
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10 |
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return implode(':', $groups); |
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} |
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51
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52
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/** |
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* {@inheritdoc} |
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54
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*/ |
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55
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16 |
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protected function _octets(): string |
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56
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{ |
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57
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16 |
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$words = array_map('hexdec', explode(':', $this->_ip)); |
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58
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16 |
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if (isset($this->_mask)) { |
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59
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1 |
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$words = array_merge($words, |
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60
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1 |
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array_map('hexdec', explode(':', $this->_mask))); |
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61
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} |
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62
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16 |
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return pack('n*', ...$words); |
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63
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} |
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64
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} |
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65
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sop /
x509
