Complex classes like Symphony often do a lot of different things. To break such a class down, we need to identify a cohesive component within that class. A common approach to find such a component is to look for fields/methods that share the same prefixes, or suffixes. You can also have a look at the cohesion graph to spot any un-connected, or weakly-connected components.
Once you have determined the fields that belong together, you can apply the Extract Class refactoring. If the component makes sense as a sub-class, Extract Subclass is also a candidate, and is often faster.
While breaking up the class, it is a good idea to analyze how other classes use Symphony, and based on these observations, apply Extract Interface, too.
1 | <?php |
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14 | abstract class Symphony implements Singleton |
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15 | { |
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16 | /** |
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17 | * An instance of the Symphony class, either `Administration` or `Frontend`. |
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18 | * @var Symphony |
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19 | */ |
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20 | protected static $_instance = null; |
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21 | |||
22 | /** |
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23 | * An instance of the Profiler class |
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24 | * @var Profiler |
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25 | */ |
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26 | protected static $Profiler = null; |
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27 | |||
28 | /** |
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29 | * An instance of the `Configuration` class |
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30 | * @var Configuration |
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31 | */ |
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32 | private static $Configuration = null; |
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33 | |||
34 | /** |
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35 | * An instance of the `Database` class |
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36 | * @var MySQL |
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37 | */ |
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38 | private static $Database = null; |
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39 | |||
40 | /** |
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41 | * An instance of the `ExtensionManager` class |
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42 | * @var ExtensionManager |
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43 | */ |
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44 | private static $ExtensionManager = null; |
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45 | |||
46 | /** |
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47 | * An instance of the `Log` class |
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48 | * @var Log |
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49 | */ |
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50 | private static $Log = null; |
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51 | |||
52 | /** |
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53 | * The current page namespace, used for translations |
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54 | * @since Symphony 2.3 |
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55 | * @var string |
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56 | */ |
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57 | private static $namespace = false; |
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58 | |||
59 | /** |
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60 | * An instance of the Cookies class |
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61 | * @var Cookies |
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62 | */ |
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63 | public static $Cookies = null; |
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64 | |||
65 | /** |
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66 | * An instance of the Session class |
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67 | * @var Session |
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68 | */ |
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69 | public static $Session = null; |
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70 | |||
71 | /** |
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72 | * An instance of the SessionFlash class |
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73 | * @var Session |
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74 | */ |
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75 | public static $Flash = null; |
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76 | |||
77 | /** |
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78 | * An instance of the currently logged in Author |
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79 | * @var Author |
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80 | */ |
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81 | public static $Author = null; |
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82 | |||
83 | /** |
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84 | * A previous exception that has been fired. Defaults to null. |
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85 | * @since Symphony 2.3.2 |
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86 | * @var Exception |
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87 | */ |
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88 | private static $exception = null; |
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89 | |||
90 | /** |
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91 | * The Symphony constructor initialises the class variables of Symphony. At present |
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92 | * constructor has a couple of responsibilities: |
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93 | * - Start a profiler instance |
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94 | * - If magic quotes are enabled, clean `$_SERVER`, `$_COOKIE`, `$_GET` and `$_POST` arrays |
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95 | * - Initialise the correct Language for the currently logged in Author. |
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96 | * - Start the session and adjust the error handling if the user is logged in |
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97 | */ |
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98 | protected function __construct() |
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99 | { |
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100 | self::$Profiler = Profiler::instance(); |
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101 | |||
102 | if (get_magic_quotes_gpc()) { |
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103 | General::cleanArray($_SERVER); |
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104 | General::cleanArray($_COOKIE); |
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105 | General::cleanArray($_GET); |
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106 | General::cleanArray($_POST); |
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107 | } |
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108 | |||
109 | // Initialize language management |
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110 | Lang::initialize(); |
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111 | Lang::set(self::$Configuration->get('lang', 'symphony')); |
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112 | |||
113 | $this->initialiseLog(); |
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114 | |||
115 | GenericExceptionHandler::initialise(self::Log()); |
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116 | GenericErrorHandler::initialise(self::Log()); |
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117 | |||
118 | $this->initialiseDatabase(); |
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119 | $this->initialiseExtensionManager(); |
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120 | $this->initialiseSessionAndCookies(); |
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121 | |||
122 | // If the user is not a logged in Author, turn off the verbose error messages. |
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123 | if (!self::isLoggedIn() && is_null(self::$Author)) { |
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124 | GenericExceptionHandler::$enabled = false; |
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125 | } |
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126 | |||
127 | // Engine is ready. |
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128 | self::$Profiler->sample('Engine Initialisation'); |
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129 | } |
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130 | |||
131 | /** |
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132 | * Setter for the Symphony Log and Error Handling system |
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133 | * |
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134 | * @since Symphony 2.6.0 |
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135 | */ |
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136 | public static function initialiseErrorHandler() |
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143 | |||
144 | /** |
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145 | * Accessor for the Symphony instance, whether it be Frontend |
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146 | * or Administration |
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147 | * |
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148 | * @since Symphony 2.2 |
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149 | * @throws Exception |
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150 | * @return Symphony |
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151 | */ |
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152 | public static function Engine() |
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162 | |||
163 | /** |
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164 | * Setter for `$Configuration`. This function initialise the configuration |
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165 | * object and populate its properties based on the given `$array`. Since |
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166 | * Symphony 2.6.5, it will also set Symphony's date constants. |
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167 | * |
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168 | * @since Symphony 2.3 |
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169 | * @param array $data |
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170 | * An array of settings to be stored into the Configuration object |
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171 | */ |
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172 | public static function initialiseConfiguration(array $data = array()) |
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173 | { |
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174 | if (empty($data)) { |
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175 | // Includes the existing CONFIG file and initialises the Configuration |
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176 | // by setting the values with the setArray function. |
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177 | include CONFIG; |
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178 | |||
179 | $data = $settings; |
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180 | } |
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181 | |||
182 | self::$Configuration = new Configuration(true); |
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183 | self::$Configuration->setArray($data); |
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184 | |||
185 | // Set date format throughout the system |
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186 | define_safe('__SYM_DATE_FORMAT__', self::Configuration()->get('date_format', 'region')); |
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187 | define_safe('__SYM_TIME_FORMAT__', self::Configuration()->get('time_format', 'region')); |
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188 | define_safe('__SYM_DATETIME_FORMAT__', __SYM_DATE_FORMAT__ . self::Configuration()->get('datetime_separator', 'region') . __SYM_TIME_FORMAT__); |
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189 | DateTimeObj::setSettings(self::Configuration()->get('region')); |
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190 | } |
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191 | |||
192 | /** |
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193 | * Accessor for the current `Configuration` instance. This contains |
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194 | * representation of the the Symphony config file. |
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195 | * |
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196 | * @return Configuration |
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197 | */ |
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198 | public static function Configuration() |
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202 | |||
203 | /** |
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204 | * Is XSRF enabled for this Symphony install? |
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205 | * |
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206 | * @since Symphony 2.4 |
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207 | * @return boolean |
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208 | */ |
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209 | public static function isXSRFEnabled() |
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213 | |||
214 | /** |
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215 | * Accessor for the current `Profiler` instance. |
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216 | * |
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217 | * @since Symphony 2.3 |
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218 | * @return Profiler |
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219 | */ |
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220 | public static function Profiler() |
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224 | |||
225 | /** |
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226 | * Setter for `$Log`. This function uses the configuration |
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227 | * settings in the 'log' group in the Configuration to create an instance. Date |
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228 | * formatting options are also retrieved from the configuration. |
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229 | * |
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230 | * @param string $filename (optional) |
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231 | * The file to write the log to, if omitted this will default to `ACTIVITY_LOG` |
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232 | * @throws Exception |
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233 | * @return bool|void |
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234 | */ |
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235 | public static function initialiseLog($filename = null) |
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236 | { |
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237 | if (self::$Log instanceof Log) { |
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238 | return true; |
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239 | } |
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240 | |||
241 | if (is_null($filename)) { |
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242 | $filename = ACTIVITY_LOG; |
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243 | } |
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244 | |||
245 | // Get the Handler from the Configuration |
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246 | $handler = self::Configuration()->get('handler', 'log'); |
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247 | $context = array_merge(array( |
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248 | 'vars' => array( |
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249 | 'filename' => $filename |
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250 | ) |
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251 | ), |
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252 | self::Configuration()->get() |
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253 | ); |
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254 | |||
255 | // Create the base handler |
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256 | if (is_array($handler['args'])) { |
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257 | array_walk($handler['args'], 'General::replacePlaceholdersWithContext', $context); |
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258 | $reflection = new ReflectionClass($handler['class']); |
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259 | $handler = $reflection->newInstanceArgs($handler['args']); |
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260 | } else { |
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261 | $handler = new \Monolog\Handler\StreamHandler($filename); |
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262 | } |
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263 | |||
264 | // Create the base formatter |
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265 | if ($format = self::Configuration()->get('formatter', 'log')) { |
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266 | array_walk($format['args'], 'General::replacePlaceholdersWithContext', $context); |
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267 | $reflection = new ReflectionClass($format['class']); |
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268 | $formatter = $reflection->newInstanceArgs($format['args']); |
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269 | $handler->setFormatter($formatter); |
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270 | } |
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271 | |||
272 | // Create the log object |
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273 | $logger = new Logger(basename($filename)); |
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274 | $logger->pushHandler($handler); |
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275 | |||
276 | self::$Log = new Log($logger); |
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277 | } |
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278 | |||
279 | /** |
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280 | * Accessor for the current `Log` instance |
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281 | * |
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282 | * @since Symphony 2.3 |
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283 | * @return Log |
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284 | */ |
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285 | public static function Log() |
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286 | { |
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287 | return self::$Log; |
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288 | } |
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289 | |||
290 | /** |
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291 | * Setter for `$Session`. This will use PHP's parse_url |
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292 | * function on the current URL to set a session using the `session_name` |
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293 | * defined in the Symphony configuration. The is either admin or public. |
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294 | * The session will last for the time defined in configuration. |
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295 | * |
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296 | * @since Symphony 3.0.0 |
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297 | */ |
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298 | public function initialiseSessionAndCookies() |
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299 | { |
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300 | $cookie_path = @parse_url(URL, PHP_URL_PATH); |
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301 | $cookie_path = '/' . trim($cookie_path, '/'); |
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302 | |||
303 | $timeout = $this->getSessionTimeout(); |
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304 | |||
305 | $name = null; |
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306 | if (class_exists('Administration', false)) { |
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307 | $name = self::Configuration()->get('admin_session_name', 'session'); |
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308 | } else { |
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309 | $name = self::Configuration()->get('public_session_name', 'session'); |
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310 | } |
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311 | |||
312 | if (is_null($name)) { |
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313 | $name = 'symphony'; |
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314 | } |
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315 | |||
316 | // The handler accepts a database in a move towards dependency injection |
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317 | $handler = new DatabaseSessionHandler(self::Database(), array( |
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318 | 'session_lifetime' => $timeout |
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319 | ), $name); |
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320 | |||
321 | // The session accepts a handler in a move towards dependency injection |
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322 | self::$Session = new Session($handler, array( |
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323 | 'session_gc_probability' => self::Configuration()->get('session_gc_probability', 'session'), |
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324 | 'session_gc_divisor' => self::Configuration()->get('session_gc_divisor', 'session'), |
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325 | 'session_gc_maxlifetime' => $timeout, |
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326 | 'session_cookie_lifetime' => $timeout, |
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327 | 'session_cookie_path' => $cookie_path, |
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328 | 'session_cookie_domain' => null, |
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329 | 'session_cookie_secure' => (defined(__SECURE__) ? true : false), |
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330 | 'session_cookie_httponly' => true |
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331 | ), $name); |
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332 | |||
333 | // Initialise the cookie handler |
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334 | self::$Cookies = new Cookies(array( |
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335 | 'domain' => self::Session()->getDomain(), |
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336 | 'path' => $cookie_path, |
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337 | 'expires' => time() + $timeout, |
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338 | 'secure' => (defined(__SECURE__) ? true : false), |
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339 | 'httponly' => true |
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340 | )); |
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341 | |||
342 | // Start the session |
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343 | self::Session()->start($_SESSION); |
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344 | |||
345 | // The flash accepts a session in a move towards dependency injection |
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346 | self::$Flash = new SessionFlash(self::Session()); |
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347 | |||
348 | // Fetch the current cookies from the header |
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349 | self::Cookies()->fetch(); |
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350 | } |
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351 | |||
352 | /** |
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353 | * Accessor for the current `$Session` instance. |
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354 | * |
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355 | * @since 3.0.0 |
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356 | * @return Session |
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357 | */ |
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358 | public static function Session() |
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359 | { |
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360 | return self::$Session; |
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361 | } |
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362 | |||
363 | /** |
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364 | * Accessor for the current `$Cookies` instance. |
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365 | * |
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366 | * @since 2.0.0 |
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367 | * @return Cookies |
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368 | */ |
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369 | public static function Cookies() |
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370 | { |
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371 | return self::$Cookies; |
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372 | } |
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373 | |||
374 | /** |
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375 | * Accessor for the current `$Flash` instance. |
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376 | * |
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377 | * @since 3.0.0 |
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378 | * @return SessionFlash |
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379 | */ |
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380 | public static function Flash() |
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381 | { |
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382 | return self::$Flash; |
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383 | } |
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384 | |||
385 | /** |
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386 | * Gets the configuerd session timeout as seconds, based on the environment instance |
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387 | * @return int |
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388 | * The seconds |
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389 | */ |
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390 | private function getSessionTimeout() |
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391 | { |
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392 | if (class_exists('Administration', false)) { |
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393 | $time = (self::Configuration()->get('admin_session_expires', 'symphony') ? self::Configuration()->get('admin_session_expires', 'symphony') : '2 weeks'); |
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394 | } else { |
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395 | $time = (self::Configuration()->get('public_session_expires', 'symphony') ? self::Configuration()->get('public_session_expires', 'symphony') : '2 weeks'); |
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396 | } |
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397 | |||
398 | if (is_string($time) && !is_numeric($time)) { |
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399 | $time = DateTimeObj::stringToSeconds($time); |
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400 | } |
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401 | |||
402 | return $time; |
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403 | } |
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404 | |||
405 | /** |
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406 | * Setter for `$ExtensionManager` using the current |
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407 | * Symphony instance as the parent. If for some reason this fails, |
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408 | * a Symphony Error page will be thrown |
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409 | * |
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410 | * @param boolean $force (optional) |
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411 | * When set to true, this function will always create a new |
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412 | * instance of ExtensionManager, replacing self::$ExtensionManager. |
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413 | * @return void |
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414 | */ |
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415 | public static function initialiseExtensionManager($force = false) |
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416 | { |
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417 | if (!$force && self::$ExtensionManager instanceof ExtensionManager) { |
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418 | return; |
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419 | } |
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420 | |||
421 | self::$ExtensionManager = new ExtensionManager; |
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422 | |||
423 | if (!(self::$ExtensionManager instanceof ExtensionManager)) { |
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424 | self::throwCustomError(__('Error creating Symphony extension manager.')); |
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425 | } |
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426 | } |
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427 | |||
428 | /** |
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429 | * Accessor for the current `$ExtensionManager` instance. |
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430 | * |
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431 | * @since Symphony 2.2 |
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432 | * @return ExtensionManager |
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433 | */ |
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434 | public static function ExtensionManager() |
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435 | { |
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436 | return self::$ExtensionManager; |
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437 | } |
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438 | |||
439 | /** |
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440 | * Setter for `$Database`, accepts a Database object. If `$database` |
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441 | * is omitted, this function will set `$Database` to be of the `MySQL` |
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442 | * class. |
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443 | * |
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444 | * @since Symphony 2.3 |
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445 | * @param stdClass $database (optional) |
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446 | * The class to handle all Database operations, if omitted this function |
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447 | * will set `self::$Database` to be an instance of the `MySQL` class. |
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448 | * @return boolean |
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449 | * This function will always return true |
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450 | */ |
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451 | public static function setDatabase(stdClass $database = null) |
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461 | |||
462 | /** |
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463 | * Accessor for the current `$Database` instance. |
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464 | * |
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465 | * @return MySQL |
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466 | */ |
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467 | public static function Database() |
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471 | |||
472 | /** |
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473 | * This will initialise the Database class and attempt to create a connection |
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474 | * using the connection details provided in the Symphony configuration. If any |
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475 | * errors occur whilst doing so, a Symphony Error Page is displayed. |
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476 | * |
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477 | * @throws SymphonyErrorPage |
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478 | * @return boolean |
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479 | * This function will return true if the `$Database` was |
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480 | * initialised successfully. |
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481 | */ |
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482 | public static function initialiseDatabase() |
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483 | { |
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484 | self::setDatabase(); |
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485 | $details = self::Configuration()->get('database'); |
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486 | |||
487 | try { |
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488 | if (!self::Database()->connect($details['host'], $details['user'], $details['password'], $details['port'], $details['db'])) { |
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489 | return false; |
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490 | } |
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491 | |||
492 | if (!self::Database()->isConnected()) { |
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493 | return false; |
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494 | } |
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495 | |||
496 | self::Database()->setPrefix($details['tbl_prefix']); |
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497 | self::Database()->setTimeZone(self::Configuration()->get('timezone', 'region')); |
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498 | |||
499 | if (isset($details['query_caching'])) { |
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500 | if ($details['query_caching'] === 'off') { |
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501 | self::Database()->disableCaching(); |
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502 | } elseif ($details['query_caching'] === 'on') { |
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503 | self::Database()->enableCaching(); |
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504 | } |
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505 | } |
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506 | |||
507 | if (isset($details['query_logging'])) { |
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508 | if ($details['query_logging'] === 'off') { |
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509 | self::Database()->disableLogging(); |
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510 | } elseif ($details['query_logging'] === 'on') { |
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511 | self::Database()->enableLogging(); |
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512 | } |
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513 | } |
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514 | } catch (DatabaseException $e) { |
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515 | self::throwCustomError( |
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516 | $e->getDatabaseErrorCode() . ': ' . $e->getDatabaseErrorMessage(), |
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517 | __('Symphony Database Error'), |
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518 | Page::HTTP_STATUS_ERROR, |
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519 | 'database', |
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520 | array( |
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521 | 'error' => $e, |
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522 | 'message' => __('There was a problem whilst attempting to establish a database connection. Please check all connection information is correct.') . ' ' . __('The following error was returned:') |
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523 | ) |
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524 | ); |
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525 | } |
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526 | |||
527 | return true; |
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528 | } |
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529 | |||
530 | /** |
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531 | * Accessor for the current `$Author` instance. |
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532 | * |
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533 | * @since Symphony 2.5.0 |
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534 | * @return Author |
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535 | */ |
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536 | public static function Author() |
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537 | { |
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538 | return self::$Author; |
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539 | } |
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540 | |||
541 | /** |
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542 | * Attempts to log an Author in given a username and password. |
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543 | * If the password is not hashed, it will be hashed using the sha1 |
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544 | * algorithm. The username and password will be sanitized before |
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545 | * being used to query the Database. If an Author is found, they |
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546 | * will be logged in and the sanitized username and password (also hashed) |
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547 | * will be saved as values in the `$Session`. |
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548 | * |
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549 | * @see toolkit.Cryptography#hash() |
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550 | * @throws DatabaseException |
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551 | * @param string $username |
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552 | * The Author's username. This will be sanitized before use. |
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553 | * @param string $password |
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554 | * The Author's password. This will be sanitized and then hashed before use |
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555 | * @param boolean $isHash |
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556 | * If the password provided is already hashed, setting this parameter to |
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557 | * true will stop it becoming rehashed. By default it is false. |
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558 | * @return boolean |
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559 | * True if the Author was logged in, false otherwise |
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560 | */ |
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561 | public static function login($username, $password, $isHash = false) |
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562 | { |
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563 | $username = trim(self::Database()->cleanValue($username)); |
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564 | $password = trim(self::Database()->cleanValue($password)); |
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565 | |||
566 | if (strlen($username) > 0 && strlen($password) > 0) { |
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567 | $author = AuthorManager::fetch('id', 'ASC', 1, null, sprintf( |
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568 | "`username` = '%s'", |
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569 | $username |
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570 | )); |
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571 | |||
572 | if (!empty($author) && Cryptography::compare($password, current($author)->get('password'), $isHash)) { |
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573 | self::$Author = current($author); |
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574 | |||
575 | // Only migrate hashes if there is no update available as the update might change the tbl_authors table. |
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576 | if (self::isUpgradeAvailable() === false && Cryptography::requiresMigration(self::$Author->get('password'))) { |
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577 | self::$Author->set('password', Cryptography::hash($password)); |
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578 | |||
579 | self::Database()->update(array('password' => self::$Author->get('password')), 'tbl_authors', |
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580 | " `id` = ?", array(self::$Author->get('id')) |
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581 | ); |
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582 | } |
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583 | |||
584 | self::Session()->set('username', $username); |
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585 | self::Session()->set('pass', self::$Author->get('password')); |
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586 | |||
587 | self::Database()->update(array( |
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588 | 'last_seen' => DateTimeObj::get('Y-m-d H:i:s') |
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589 | ), |
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590 | 'tbl_authors', |
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591 | " `id` = ?", |
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592 | array(self::$Author->get('id')) |
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593 | ); |
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594 | |||
595 | // Only set custom author language in the backend |
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596 | if (class_exists('Administration', false)) { |
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597 | Lang::set(self::$Author->get('language')); |
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598 | } |
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599 | |||
600 | return true; |
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601 | } |
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602 | } |
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603 | |||
604 | return false; |
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605 | } |
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606 | |||
607 | /** |
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608 | * Symphony allows Authors to login via the use of tokens instead of |
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609 | * a username and password. A token is derived from concatenating the |
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610 | * Author's username and password and applying the sha1 hash to |
||
611 | * it, from this, a portion of the hash is used as the token. This is a useful |
||
612 | * feature often used when setting up other Authors accounts or if an |
||
613 | * Author forgets their password. |
||
614 | * |
||
615 | * @param string $token |
||
616 | * The Author token, which is a portion of the hashed string concatenation |
||
617 | * of the Author's username and password |
||
618 | * @throws DatabaseException |
||
619 | * @return boolean |
||
620 | * True if the Author is logged in, false otherwise |
||
621 | */ |
||
622 | public static function loginFromToken($token) |
||
623 | { |
||
624 | $token = self::Database()->cleanValue($token); |
||
625 | $tokenLength = strlen(trim($token)); |
||
626 | |||
627 | if ($tokenLength === 0) { |
||
628 | return false; |
||
629 | } |
||
630 | |||
631 | if ($tokenLength === 6 || $tokenLength === 16) { |
||
632 | $row = self::Database()->fetchRow(0, " |
||
633 | SELECT `a`.`id`, `a`.`username`, `a`.`password` |
||
634 | FROM `tbl_authors` AS `a`, `tbl_forgotpass` AS `f` |
||
635 | WHERE `a`.`id` = `f`.`author_id` |
||
636 | AND `f`.`expiry` > ? |
||
637 | AND `f`.`token` = ? |
||
638 | LIMIT 1", |
||
639 | array( |
||
640 | DateTimeObj::getGMT('c'), |
||
641 | $token |
||
642 | ) |
||
643 | ); |
||
644 | |||
645 | self::Database()->delete('tbl_forgotpass', " `token` = ? ", array($token)); |
||
646 | } else { |
||
647 | $row = self::Database()->fetchRow(0, sprintf( |
||
648 | "SELECT `id`, `username`, `password` |
||
649 | FROM `tbl_authors` |
||
650 | WHERE SUBSTR(%s(CONCAT(`username`, `password`)), 1, 8) = ? |
||
651 | AND `auth_token_active` = 'yes' |
||
652 | LIMIT 1", |
||
653 | 'SHA1' |
||
654 | ), |
||
655 | array($token) |
||
656 | ); |
||
657 | } |
||
658 | |||
659 | if ($row) { |
||
660 | self::$Author = AuthorManager::fetchByID($row['id']); |
||
661 | self::Session()->set('username', $row['username']); |
||
662 | self::Session()->set('pass', $row['password']); |
||
663 | self::Database()->update(array('last_seen' => DateTimeObj::getGMT('Y-m-d H:i:s')), 'tbl_authors', "`id` = ?", array( |
||
664 | $row['id'] |
||
665 | )); |
||
666 | |||
667 | return true; |
||
668 | } |
||
669 | |||
670 | return false; |
||
671 | } |
||
672 | |||
673 | /** |
||
674 | * This function will destroy the currently logged in `$Author` |
||
675 | * session, essentially logging them out. |
||
676 | * |
||
677 | * @see core.Session#expire() |
||
678 | */ |
||
679 | public static function logout() |
||
680 | { |
||
681 | self::Session()->expire(); |
||
682 | } |
||
683 | |||
684 | /** |
||
685 | * This function determines whether an there is a currently logged in |
||
686 | * Author for Symphony by using the `$Session`'s username |
||
687 | * and password. If an Author is found, they will be logged in, otherwise |
||
688 | * the `$Session` will be destroyed. |
||
689 | * |
||
690 | * @see login() |
||
691 | * @return boolean |
||
692 | */ |
||
693 | public static function isLoggedIn() |
||
694 | { |
||
695 | // Check to see if Symphony exists, or if we already have an Author instance. |
||
696 | if (is_null(self::$_instance) || self::$Author) { |
||
697 | return true; |
||
698 | } |
||
699 | |||
700 | // No author instance found, attempt to log in with the cookied credentials |
||
701 | return self::login(self::Session()->get('username'), self::Session()->get('pass'), true); |
||
702 | } |
||
703 | |||
704 | /** |
||
705 | * Returns the most recent version found in the `/install/migrations` folder. |
||
706 | * Returns a version string to be used in `version_compare()` if an updater |
||
707 | * has been found. Returns `FALSE` otherwise. |
||
708 | * |
||
709 | * @since Symphony 2.3.1 |
||
710 | * @return string|boolean |
||
711 | */ |
||
712 | public static function getMigrationVersion() |
||
727 | |||
728 | /** |
||
729 | * Checks if an update is available and applicable for the current installation. |
||
730 | * |
||
731 | * @since Symphony 2.3.1 |
||
732 | * @return boolean |
||
733 | */ |
||
734 | public static function isUpgradeAvailable() |
||
745 | |||
746 | /** |
||
747 | * Checks if the installer/upgrader is available. |
||
748 | * |
||
749 | * @since Symphony 2.3.1 |
||
750 | * @return boolean |
||
751 | */ |
||
752 | public static function isInstallerAvailable() |
||
756 | |||
757 | /** |
||
758 | * A wrapper for throwing a new Symphony Error page. |
||
759 | * |
||
760 | * This methods sets the `GenericExceptionHandler::$enabled` value to `true`. |
||
761 | * |
||
762 | * @see core.SymphonyErrorPage |
||
763 | * @param string|XMLElement $message |
||
764 | * A description for this error, which can be provided as a string |
||
765 | * or as an XMLElement. |
||
766 | * @param string $heading |
||
767 | * A heading for the error page |
||
768 | * @param integer $status |
||
769 | * Properly sets the HTTP status code for the response. Defaults to |
||
770 | * `Page::HTTP_STATUS_ERROR`. Use `Page::HTTP_STATUS_XXX` to set this value. |
||
771 | * @param string $template |
||
772 | * A string for the error page template to use, defaults to 'generic'. This |
||
773 | * can be the name of any template file in the `TEMPLATES` directory. |
||
774 | * A template using the naming convention of `tpl.*.php`. |
||
775 | * @param array $additional |
||
776 | * Allows custom information to be passed to the Symphony Error Page |
||
777 | * that the template may want to expose, such as custom Headers etc. |
||
778 | * @throws SymphonyErrorPage |
||
779 | */ |
||
780 | public static function throwCustomError($message, $heading = 'Symphony Fatal Error', $status = Page::HTTP_STATUS_ERROR, $template = 'generic', array $additional = array()) |
||
785 | |||
786 | /** |
||
787 | * Setter accepts a previous Exception. Useful for determining the context |
||
788 | * of a current exception (ie. detecting recursion). |
||
789 | * |
||
790 | * @since Symphony 2.3.2 |
||
791 | * @param Exception $ex |
||
792 | */ |
||
793 | public static function setException(Exception $ex) |
||
797 | |||
798 | /** |
||
799 | * Accessor for `self::$exception`. |
||
800 | * |
||
801 | * @since Symphony 2.3.2 |
||
802 | * @return Exception|null |
||
803 | */ |
||
804 | public static function getException() |
||
808 | |||
809 | /** |
||
810 | * Returns the page namespace based on the current URL. |
||
811 | * A few examples: |
||
812 | * |
||
813 | * /login |
||
814 | * /publish |
||
815 | * /blueprints/datasources |
||
816 | * [...] |
||
817 | * /extension/$extension_name/$page_name |
||
818 | * |
||
819 | * This method is especially useful in couple with the translation function. |
||
820 | * |
||
821 | * @see toolkit#__() |
||
822 | * @return string |
||
823 | * The page namespace, without any action string (e.g. "new", "saved") or |
||
824 | * any value that depends upon the single setup (e.g. the section handle in |
||
825 | * /publish/$handle) |
||
826 | */ |
||
827 | public static function getPageNamespace() |
||
857 | } |
||
858 | |||
859 | /** |
||
860 | * The `SymphonyErrorPageHandler` extends the `GenericExceptionHandler` |
||
861 | * to allow the template for the exception to be provided from the `TEMPLATES` |
||
862 | * directory |
||
863 | */ |
||
864 | class SymphonyErrorPageHandler extends GenericExceptionHandler |
||
865 | { |
||
866 | /** |
||
867 | * The render function will take a `SymphonyErrorPage` exception and |
||
868 | * output a HTML page. This function first checks to see if their is a custom |
||
869 | * template for this exception otherwise it reverts to using the default |
||
870 | * `usererror.generic.php` |
||
871 | * |
||
872 | * @param Exception $e |
||
873 | * The Exception object |
||
1111 |
Instead of super-globals, we recommend to explicitly inject the dependencies of your class. This makes your code less dependent on global state and it becomes generally more testable: