1 | <?php
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2 |
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3 | define('IPV4_BIT_WIDTH', 32);
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4 |
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5 | class NetworkAddressIPv4
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6 | {
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7 | public int $Address;
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8 | public int $Prefix;
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9 |
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10 | function __construct()
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11 | {
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12 | $this->Address = 0;
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13 | $this->Prefix = 0;
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14 | }
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15 |
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16 | function GetNetMask(): int
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17 | {
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18 | return ((1 << IPV4_BIT_WIDTH) - 1) ^ ((1 << (IPV4_BIT_WIDTH - $this->Prefix)) - 1);
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19 | }
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20 |
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21 | function AddressToString(): string
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22 | {
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23 | return implode('.', array(($this->Address >> 24) & 255, ($this->Address >> 16) & 255, ($this->Address >> 8) & 255, ($this->Address & 255)));
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24 | }
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25 |
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26 | function AddressFromString(string $Value): void
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27 | {
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28 | $Parts = explode('.', $Value);
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29 | $this->Address = ($Parts[0] << 24) | ($Parts[1] << 16) | ($Parts[2] << 8) | $Parts[3];
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30 | }
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31 |
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32 | function GetRange(): array
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33 | {
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34 | $From = new NetworkAddressIPv4();
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35 | $From->Address = $this->Address;
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36 | $From->Prefix = IPV4_BIT_WIDTH;
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37 | $HostMask = 0xffffffff ^ $this->GetNetMask();
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38 | $To = new NetworkAddressIPv4();
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39 | $To->Address = $From->Address + $HostMask;
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40 | $To->Prefix = IPV4_BIT_WIDTH;
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41 | return array('From' => $From, 'To' => $To);
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42 | }
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43 |
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44 | function ChangePrefix(int $NewPrefix): void
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45 | {
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46 | $this->Prefix = $NewPrefix;
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47 | if ($this->Prefix > IPV4_BIT_WIDTH) $this->Prefix = IPV4_BIT_WIDTH;
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48 | if ($this->Prefix < 0) $this->Prefix = 0;
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49 | $this->Address = $this->Address & $this->GetNetMask();
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50 | }
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51 |
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52 | function Contain(NetworkAddressIPv4 $Address): bool
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53 | {
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54 | $UpperNetmask = $this->GetNetMask();
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55 | if (($this->Prefix < $Address->Prefix) and (($Address->Address & $UpperNetmask) == ($this->Address & $UpperNetmask))) $Result = true;
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56 | else $Result = false;
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57 | return $Result;
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58 | }
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59 | }
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60 |
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61 | define('IPV6_BIT_WIDTH', 128);
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62 |
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63 | class NetworkAddressIPv6
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64 | {
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65 | public string $Address;
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66 | public int $Prefix;
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67 |
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68 | function __construct()
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69 | {
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70 | $this->Address = 0;
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71 | $this->Prefix = 0;
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72 | }
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73 |
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74 | function GetNetMask(): string
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75 | {
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76 | return Int128Xor(Int128Sub(Int128Shl(IntToInt128(1), IntToInt128(IPV6_BIT_WIDTH)), IntToInt128(1)),
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77 | Int128Sub(Int128Shl(IntToInt128(1), IntToInt128(IPV6_BIT_WIDTH - $this->Prefix)), IntToInt128(1)));
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78 | }
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79 |
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80 | function AddressToString(): string
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81 | {
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82 | return inet_ntop($this->Address);
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83 | }
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84 |
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85 | function AddressFromString(string $Value)
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86 | {
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87 | $this->Address = inet_pton($Value);
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88 | }
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89 |
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90 | function ChangePrefix(int $NewPrefix): void
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91 | {
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92 | $this->Prefix = $NewPrefix;
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93 | if ($this->Prefix > IPV6_BIT_WIDTH) $this->Prefix = IPV6_BIT_WIDTH;
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94 | if ($this->Prefix < 0) $this->Prefix = 0;
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95 | $this->Address = Int128And($this->Address, $this->GetNetMask());
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96 | }
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97 |
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98 | function GetOctets(): array
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99 | {
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100 | $Result = array();
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101 | $Data = array_reverse(unpack('C*', $this->Address));
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102 | foreach ($Data as $Item)
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103 | {
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104 | $Result[] = dechex($Item & 15);
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105 | $Result[] = dechex(($Item >> 4) & 15);
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106 | }
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107 | return $Result;
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108 | }
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109 |
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110 | function EncodeMAC(string $MAC): void
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111 | {
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112 | $MAC = explode(':', $MAC);
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113 | $Data = unpack('C*', $this->Address);
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114 | $Data[9] = hexdec($MAC[0]) ^ 0x02;
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115 | $Data[10] = hexdec($MAC[1]);
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116 | $Data[11] = hexdec($MAC[2]);
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117 | $Data[12] = 0xff;
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118 | $Data[13] = 0xfe;
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119 | $Data[14] = hexdec($MAC[3]);
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120 | $Data[15] = hexdec($MAC[4]);
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121 | $Data[16] = hexdec($MAC[5]);
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122 | $this->Address = pack_array('C*', $Data);
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123 | }
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124 |
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125 | function Contain(NetworkAddressIPv6 $Address): bool
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126 | {
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127 | $UpperNetmask = $this->GetNetMask();
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128 | if (($this->Prefix < $Address->Prefix) and ((Int128Equal(Int128And($Address->Address, $UpperNetmask), Int128And($this->Address, $UpperNetmask))))) $Result = true;
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129 | else $Result = false;
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130 | return $Result;
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131 | }
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132 | }
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