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1 | <?php |
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2 | |||
3 | namespace WWON\JwtGuard; |
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4 | |||
5 | use Firebase\JWT\JWT; |
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6 | use Illuminate\Contracts\Auth\Authenticatable; |
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7 | use Illuminate\Support\Facades\Config; |
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8 | use WWON\JwtGuard\Contract\TokenManager; |
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9 | |||
10 | class JwtService |
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11 | { |
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12 | |||
13 | /** |
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14 | * @var string |
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15 | */ |
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16 | private $key; |
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17 | |||
18 | /** |
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19 | * @var TokenManager |
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20 | */ |
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21 | protected $tokenManager; |
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22 | |||
23 | /** |
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24 | * JwtService constructor |
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25 | * |
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26 | * @param TokenManager $tokenManager |
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27 | */ |
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28 | public function __construct(TokenManager $tokenManager) |
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29 | { |
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30 | $this->key = Config::get('jwt.secret'); |
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31 | $this->tokenManager = $tokenManager; |
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32 | } |
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33 | |||
34 | /** |
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35 | * getTokenForUser method |
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36 | * |
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37 | * @param Authenticatable $user |
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38 | * @return null|string |
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39 | */ |
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40 | public function getTokenForUser(Authenticatable $user) |
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41 | { |
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42 | $claim = new Claim([ |
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43 | 'sub' => $user->getAuthIdentifier() |
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44 | ]); |
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45 | |||
46 | return $this->getTokenForClaim($claim); |
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47 | } |
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48 | |||
49 | /** |
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50 | * getUserIdFromToken method |
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51 | * |
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52 | * @param $token |
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53 | * @return mixed|null |
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54 | */ |
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55 | public function getUserIdFromToken($token) |
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56 | { |
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57 | $claim = $this->getClaimFromToken($token); |
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58 | |||
59 | if (!empty($claim) && $this->tokenManager->check($claim)) { |
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60 | return $claim->sub; |
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61 | } |
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62 | |||
63 | return null; |
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64 | } |
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65 | |||
66 | /** |
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67 | * refreshToken method |
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68 | * |
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69 | * @param $token |
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70 | * @return null|string |
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71 | */ |
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72 | public function refreshToken($token) |
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73 | { |
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74 | $claim = $this->getClaimFromToken($token); |
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75 | |||
76 | if (empty($claim)) { |
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77 | return null; |
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78 | } |
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79 | |||
80 | $this->tokenManager->remove($claim); |
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81 | |||
82 | $newClaim = new Claim([ |
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83 | 'sub' => $claim->sub |
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84 | ]); |
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85 | |||
86 | return $this->getTokenForClaim($newClaim); |
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87 | } |
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88 | |||
89 | /** |
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90 | * getTokenForUser method |
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91 | * |
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92 | * @param Claim $claim |
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93 | * @return null|string |
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94 | */ |
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95 | protected function getTokenForClaim(Claim $claim) |
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96 | { |
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97 | $token = JWT::encode($claim->toArray(), $this->key); |
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98 | $this->tokenManager->add($claim); |
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99 | |||
100 | return $token; |
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101 | } |
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102 | |||
103 | /** |
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104 | * getClaimFromToken method |
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105 | * |
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106 | * @param $token |
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107 | * @return null|Claim |
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108 | */ |
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109 | protected function getClaimFromToken($token) |
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110 | { |
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111 | try { |
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112 | $payload = JWT::decode($token, $this->key); |
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113 | |||
114 | return new Claim((array) $payload); |
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115 | |||
116 | } catch (\Exception $e) {} |
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117 | |||
118 | return null; |
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119 | } |
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120 | |||
121 | } |
Let’s assume that you have a directory layout like this:
and let’s assume the following content of
Bar.php
:If both files
OtherDir/Foo.php
andSomeDir/Foo.php
are loaded in the same runtime, you will see a PHP error such as the following:PHP Fatal error: Cannot use SomeDir\Foo as Foo because the name is already in use in OtherDir/Foo.php
However, as
OtherDir/Foo.php
does not necessarily have to be loaded and the error is only triggered if it is loaded beforeOtherDir/Bar.php
, this problem might go unnoticed for a while. In order to prevent this error from surfacing, you must import the namespace with a different alias: