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1 | <?php |
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2 | |||
3 | namespace ZfcUser\Authentication\Storage; |
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4 | |||
5 | use Zend\Authentication\Storage; |
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6 | use Zend\Authentication\Storage\StorageInterface; |
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7 | use Zend\ServiceManager\ServiceManagerAwareInterface; |
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8 | use Zend\ServiceManager\ServiceManager; |
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9 | use ZfcUser\Mapper\UserInterface as UserMapper; |
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10 | |||
11 | class Db implements Storage\StorageInterface, ServiceManagerAwareInterface |
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12 | { |
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13 | /** |
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14 | * @var StorageInterface |
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15 | */ |
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16 | protected $storage; |
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17 | |||
18 | /** |
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19 | * @var UserMapper |
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20 | */ |
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21 | protected $mapper; |
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22 | |||
23 | /** |
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24 | * @var mixed |
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25 | */ |
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26 | protected $resolvedIdentity; |
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27 | |||
28 | /** |
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29 | * @var ServiceManager |
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30 | */ |
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31 | protected $serviceManager; |
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32 | |||
33 | /** |
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34 | * Returns true if and only if storage is empty |
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35 | * |
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36 | * @throws \Zend\Authentication\Exception\InvalidArgumentException If it is impossible to determine whether |
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37 | * storage is empty or not |
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38 | * @return boolean |
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39 | */ |
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40 | public function isEmpty() |
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41 | { |
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42 | if ($this->getStorage()->isEmpty()) { |
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43 | return true; |
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44 | } |
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45 | $identity = $this->read(); |
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46 | if ($identity === null) { |
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47 | $this->clear(); |
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48 | return true; |
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49 | } |
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50 | |||
51 | return false; |
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52 | } |
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53 | |||
54 | /** |
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55 | * Returns the contents of storage |
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56 | * |
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57 | * Behavior is undefined when storage is empty. |
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58 | * |
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59 | * @throws \Zend\Authentication\Exception\InvalidArgumentException If reading contents from storage is impossible |
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60 | * @return mixed |
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61 | */ |
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62 | public function read() |
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63 | { |
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64 | if (null !== $this->resolvedIdentity) { |
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65 | return $this->resolvedIdentity; |
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66 | } |
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67 | |||
68 | $identity = $this->getStorage()->read(); |
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69 | |||
70 | if (is_int($identity) || is_scalar($identity)) { |
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71 | $identity = $this->getMapper()->findById($identity); |
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72 | } |
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73 | |||
74 | if ($identity) { |
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75 | $this->resolvedIdentity = $identity; |
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76 | } else { |
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77 | $this->resolvedIdentity = null; |
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78 | } |
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79 | |||
80 | return $this->resolvedIdentity; |
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81 | } |
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82 | |||
83 | /** |
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84 | * Writes $contents to storage |
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85 | * |
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86 | * @param mixed $contents |
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87 | * @throws \Zend\Authentication\Exception\InvalidArgumentException If writing $contents to storage is impossible |
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88 | * @return void |
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89 | */ |
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90 | public function write($contents) |
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91 | { |
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92 | $this->resolvedIdentity = null; |
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93 | $this->getStorage()->write($contents); |
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94 | } |
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95 | |||
96 | /** |
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97 | * Clears contents from storage |
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98 | * |
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99 | * @throws \Zend\Authentication\Exception\InvalidArgumentException If clearing contents from storage is impossible |
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100 | * @return void |
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101 | */ |
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102 | public function clear() |
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103 | { |
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104 | $this->resolvedIdentity = null; |
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105 | $this->getStorage()->clear(); |
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106 | } |
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107 | |||
108 | /** |
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109 | * getStorage |
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110 | * |
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111 | * @return Storage\StorageInterface |
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112 | */ |
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113 | public function getStorage() |
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114 | { |
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115 | if (null === $this->storage) { |
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116 | $this->setStorage(new Storage\Session); |
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117 | } |
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118 | return $this->storage; |
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119 | } |
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120 | |||
121 | /** |
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122 | * setStorage |
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123 | * |
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124 | * @param Storage\StorageInterface $storage |
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125 | * @access public |
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126 | * @return Db |
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127 | */ |
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128 | public function setStorage(Storage\StorageInterface $storage) |
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129 | { |
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130 | $this->storage = $storage; |
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131 | return $this; |
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132 | } |
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133 | |||
134 | /** |
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135 | * getMapper |
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136 | * |
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137 | * @return UserMapper |
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138 | */ |
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139 | public function getMapper() |
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140 | { |
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141 | if (null === $this->mapper) { |
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142 | $this->mapper = $this->getServiceManager()->get('zfcuser_user_mapper'); |
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143 | } |
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144 | return $this->mapper; |
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145 | } |
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146 | |||
147 | /** |
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148 | * setMapper |
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149 | * |
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150 | * @param UserMapper $mapper |
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151 | * @return Db |
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152 | */ |
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153 | public function setMapper(UserMapper $mapper) |
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154 | { |
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155 | $this->mapper = $mapper; |
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156 | return $this; |
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157 | } |
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158 | |||
159 | /** |
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160 | * Retrieve service manager instance |
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161 | * |
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162 | * @return ServiceManager |
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163 | */ |
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164 | public function getServiceManager() |
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165 | { |
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166 | return $this->serviceManager; |
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167 | } |
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168 | |||
169 | /** |
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170 | * Set service manager instance |
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171 | * |
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172 | * @param ServiceManager $locator |
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173 | * @return void |
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174 | */ |
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175 | public function setServiceManager(ServiceManager $serviceManager) |
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176 | { |
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177 | $this->serviceManager = $serviceManager; |
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178 | } |
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179 | } |
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180 |