Duplicate code is one of the most pungent code smells. A rule that is often used is to re-structure code once it is duplicated in three or more places.
Common duplication problems, and corresponding solutions are:
Complex classes like User 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 User, and based on these observations, apply Extract Interface, too.
| 1 | <?php |
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| 30 | class User |
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| 31 | { |
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| 32 | /** |
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| 33 | * @var object User Object |
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| 34 | */ |
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| 35 | private $user = null; |
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| 36 | |||
| 37 | /** |
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| 38 | * @var object Koch\Configuration |
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| 39 | */ |
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| 40 | private $config = null; |
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| 41 | |||
| 42 | /** |
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| 43 | * Constructor. |
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| 44 | */ |
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| 45 | public function __construct(\Koch\Config\Config $config) |
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| 46 | { |
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| 47 | $this->config = $config; |
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| 48 | } |
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| 49 | |||
| 50 | /** |
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| 51 | * getUser by user_id. |
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| 52 | * |
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| 53 | * @param int $user_id The ID of the User. Defaults to the user_id from session. |
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| 54 | * |
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| 55 | * @return array $userdata (Dataset of CsUsers + CsProfile) |
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| 56 | */ |
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| 57 | public function getUser($user_id = null) |
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| 80 | |||
| 81 | /** |
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| 82 | * Creates the User-Object and the $session['user'] Array. |
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| 83 | * |
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| 84 | * @param $user_id The ID of the User. |
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| 85 | * @param $email The email of the User. |
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| 86 | * @param $nick The nick of the User. |
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| 87 | */ |
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| 88 | public function createUserSession($user_id = '', $email = '', $nick = '') |
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| 89 | { |
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| 90 | // Initialize the User Object |
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| 91 | $this->user = null; |
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| 92 | |||
| 93 | /* |
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| 94 | * Get User via DB Queries |
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| 95 | * |
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| 96 | * 1) user_id |
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| 97 | * 2) email |
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| 98 | * 3) nick |
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| 99 | */ |
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| 100 | if (empty($user_id) === false) { |
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| 101 | // Get the user from the user_id |
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| 102 | $this->user = Doctrine_Query::create() |
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| 103 | #->select('u.*,g.*,o.*') |
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| 104 | ->from('CsUsers u') |
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| 105 | ->leftJoin('u.CsOptions o') |
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| 106 | #->leftJoin('u.CsGroups g') |
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| 107 | ->where('u.user_id = ?') |
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| 108 | ->fetchOne([$user_id], Doctrine::HYDRATE_ARRAY); |
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| 109 | } elseif (empty($email) === false) { |
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| 110 | // Get the user from the email |
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| 111 | $this->user = Doctrine_Query::create() |
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| 112 | #->select('u.*,g.*,o.*') |
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| 113 | ->from('CsUsers u') |
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| 114 | ->leftJoin('u.CsOptions o') |
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| 115 | #->leftJoin('u.CsGroups g') |
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| 116 | ->where('u.email = ?') |
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| 117 | ->fetchOne([$email], Doctrine::HYDRATE_ARRAY); |
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| 118 | } elseif (empty($nick) === false) { |
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| 119 | // Get the user from the nick |
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| 120 | $this->user = Doctrine_Query::create() |
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| 121 | #->select('u.*,g.*,o.*') |
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| 122 | ->from('CsUsers u') |
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| 123 | ->leftJoin('u.CsOptions o') |
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| 124 | #->leftJoin('u.CsGroups g') |
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| 125 | ->where('u.nick = ?') |
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| 126 | ->fetchOne([$nick], Doctrine::HYDRATE_ARRAY); |
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| 127 | } |
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| 128 | |||
| 129 | /* |
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| 130 | * Check if this user is activated, |
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| 131 | * else reset cookie, session and redirect |
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| 132 | */ |
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| 133 | if (is_array($this->user) and $this->user['activated'] === 0) { |
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| 134 | $this->logoutUser(); |
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| 135 | |||
| 136 | // redirect |
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| 137 | $message = _('Your account is not yet activated.'); |
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| 138 | |||
| 139 | \Koch\Http\HttpResponse::redirect('/account/activation_email', 5, 403, $message); |
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| 140 | } |
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| 141 | |||
| 142 | /* |
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| 143 | * Create $_SESSION['user'] array, containing user data |
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| 144 | */ |
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| 145 | if (is_array($this->user)) { |
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| 146 | /* |
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| 147 | * Transfer User Data into Session |
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| 148 | */ |
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| 149 | #\Koch\Debug\Debug::firebug($_SESSION); |
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| 150 | #\Koch\Debug\Debug::firebug($this->config); |
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| 151 | |||
| 152 | $_SESSION['user']['authed'] = 1; |
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| 153 | $_SESSION['user']['user_id'] = $this->user['user_id']; |
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| 154 | |||
| 155 | $_SESSION['user']['passwordhash'] = $this->user['passwordhash']; |
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| 156 | $_SESSION['user']['email'] = $this->user['email']; |
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| 157 | $_SESSION['user']['nick'] = $this->user['nick']; |
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| 158 | |||
| 159 | $_SESSION['user']['disabled'] = $this->user['disabled']; |
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| 160 | $_SESSION['user']['activated'] = $this->user['activated']; |
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| 161 | |||
| 162 | /* |
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| 163 | * SetLanguage |
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| 164 | * |
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| 165 | * At this position the language might already by set by |
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| 166 | * the language_via_get filter. the language value set via GET |
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| 167 | * precedes over the user config and the general config |
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| 168 | * the full order is |
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| 169 | * a) language_via_get filter |
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| 170 | * a) user['language'] from database / personal user setting |
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| 171 | * b) standard language / fallback as defined by $this->config['locale']['locale'] |
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| 172 | */ |
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| 173 | if (false === isset($_SESSION['user']['language_via_url'])) { |
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| 174 | $_SESSION['user']['language'] = (false === empty($this->user['language'])) |
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| 175 | ? $this->user['language'] |
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| 176 | : $this->config['locale']['default']; |
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| 177 | } |
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| 178 | |||
| 179 | /** |
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| 180 | * Frontend-Theme. |
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| 181 | * |
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| 182 | * first take standard theme as defined by $config->theme |
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| 183 | * |
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| 184 | * @todo remove $_REQUEST, frontend theme is selectable via frontend |
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| 185 | */ |
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| 186 | View Code Duplication | if (false === isset($_REQUEST['theme'])) { |
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| 187 | $_SESSION['user']['frontend_theme'] = (!empty($this->user['frontend_theme'])) |
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| 188 | ? $this->user['frontend_theme'] |
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| 189 | : $this->config['template']['frontend_theme']; |
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| 190 | } |
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| 191 | |||
| 192 | /* |
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| 193 | * Backend-Theme |
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| 194 | */ |
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| 195 | View Code Duplication | if (empty($this->user['backend_theme']) === false) { |
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| 196 | $_SESSION['user']['backend_theme'] = $this->user['backend_theme']; |
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| 197 | } else { |
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| 198 | $_SESSION['user']['backend_theme'] = $this->config['template']['backend_theme']; |
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| 199 | } |
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| 200 | |||
| 201 | /* |
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| 202 | * Permissions |
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| 203 | * |
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| 204 | * Get Group & Rights of user_id |
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| 205 | */ |
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| 206 | /* |
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| 207 | User-Datensatz beinhaltet ein CsGroups-Array |
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| 208 | user => Array ( |
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| 209 | [user_id] => 1 |
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| 210 | ... |
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| 211 | [CsGroups] => Array ( |
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| 212 | [0] => Array ( |
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| 213 | [group_id] => 3 |
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| 214 | ... |
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| 215 | [role_id] => 5 |
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| 216 | ) |
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| 217 | ) |
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| 218 | ) |
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| 219 | */ |
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| 220 | // Initialize User Session Arrays |
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| 221 | $_SESSION['user']['group'] = ''; |
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| 222 | $_SESSION['user']['rights'] = ''; |
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| 223 | |||
| 224 | if (false === empty($this->user['CsGroups'])) { |
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| 225 | $_SESSION['user']['group'] = $this->user['CsGroups'][0]['group_id']; |
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| 226 | $_SESSION['user']['role'] = $this->user['CsGroups'][0]['role_id']; |
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| 227 | $_SESSION['user']['rights'] = Koch\ACL::createRightSession( |
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| 228 | $_SESSION['user']['role'], |
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| 229 | $this->user['user_id'] |
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| 230 | ); |
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| 231 | } |
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| 232 | |||
| 233 | #\Koch\Debug\Debug::firebug($_SESSION); |
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| 234 | } else { |
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| 235 | // this resets the $_SESSION['user'] array |
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| 236 | GuestUser::instantiate(); |
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| 237 | |||
| 238 | #Koch\Debug\Debug::printR($_SESSION); |
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| 239 | } |
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| 240 | } |
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| 241 | |||
| 242 | /** |
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| 243 | * Check the user. |
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| 244 | * |
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| 245 | * Validates the existance of the user via nick or email and the passwordhash |
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| 246 | * This is done in two steps: |
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| 247 | * 1. check if given nick or email exists |
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| 248 | * and if thats the case |
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| 249 | * 2. compare password from login form with database |
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| 250 | * |
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| 251 | * @param string $login_method contains the login_method ('nick' or 'email') |
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| 252 | * @param string $value contains nick or email string to look for |
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| 253 | * @param string $passwordhash contains password string |
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| 254 | * |
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| 255 | * @return int ID of User. If the user is found, the $user_id - otherwise false. |
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| 256 | */ |
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| 257 | public function checkUser($login_method = 'nick', $value = null, $passwordhash = null) |
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| 258 | { |
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| 259 | $user = null; |
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| 260 | |||
| 261 | // check if a given nick or email exists |
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| 262 | View Code Duplication | if ($login_method === 'nick') { |
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| 263 | // get user_id and passwordhash with the nick |
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| 264 | $user = Doctrine_Query::create() |
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| 265 | ->select('u.user_id, u.passwordhash, u.salt') |
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| 266 | ->from('CsUsers u') |
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| 267 | ->where('u.nick = ?') |
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| 268 | ->fetchOne([$value], Doctrine::HYDRATE_ARRAY); |
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| 269 | } |
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| 270 | |||
| 271 | // check if a given email exists |
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| 272 | View Code Duplication | if ($login_method === 'email') { |
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| 273 | // get user_id and passwordhash with the email |
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| 274 | $user = Doctrine_Query::create() |
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| 275 | ->select('u.user_id, u.passwordhash, u.salt') |
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| 276 | ->from('CsUsers u') |
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| 277 | ->where('u.email = ?') |
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| 278 | ->fetchOne([$value], Doctrine::HYDRATE_ARRAY); |
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| 279 | } |
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| 280 | |||
| 281 | $this->moduleconfig = $this->config->readModuleConfig('account'); |
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| 282 | |||
| 283 | // if user was found, check if passwords match each other |
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| 284 | if (true === (bool) $user and true === Koch\Security\Security::checkSaltedHash( |
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| 285 | $passwordhash, |
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| 286 | $user['passwordhash'], |
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| 287 | $user['salt'], |
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| 288 | $this->moduleconfig['login']['hash_algorithm'] |
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| 289 | )) { |
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| 290 | // ok, the user with nick or email exists and the passwords matched, then return the user_id |
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| 291 | return $user['user_id']; |
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| 292 | } else { |
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| 293 | // no user was found with this combination of either nick and password or email and password |
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| 294 | return false; |
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| 295 | } |
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| 296 | } |
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| 297 | |||
| 298 | /** |
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| 299 | * Login. |
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| 300 | * |
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| 301 | * @param int $user_id contains user_id |
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| 302 | * @param int $remember_me contains remember_me setting |
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| 303 | * @param string $passwordhash contains password string |
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| 304 | */ |
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| 305 | public function loginUser($user_id, $remember_me, $passwordhash) |
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| 306 | { |
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| 307 | /* |
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| 308 | * 1. Create the User Data Array and the Session via $user_id |
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| 309 | */ |
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| 310 | $this->createUserSession($user_id); |
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| 311 | |||
| 312 | /* |
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| 313 | * 2. Remember-Me ( set Logindata via Cookie ) |
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| 314 | */ |
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| 315 | if ($remember_me === true) { |
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| 316 | $this->setRememberMeCookie($user_id, $passwordhash); |
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| 317 | } |
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| 318 | |||
| 319 | /* |
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| 320 | * 3. user_id is now inserted into the session |
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| 321 | * This transforms the so called Guest-Session to a User-Session |
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| 322 | */ |
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| 323 | $this->sessionSetUserId($user_id); |
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| 324 | |||
| 325 | /* |
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| 326 | * 4. Delete Login attempts |
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| 327 | */ |
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| 328 | unset($_SESSION['login_attempts']); |
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| 329 | |||
| 330 | /* |
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| 331 | * 5. Stats-Updaten |
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| 332 | * @todo stats update after login? |
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| 333 | */ |
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| 334 | } |
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| 335 | |||
| 336 | /** |
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| 337 | * Set the remember me cookie |
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| 338 | * If this cookie is found, the user is re-logged in automatically. |
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| 339 | * |
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| 340 | * @param int $user_id contains user_id |
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| 341 | * @param string $passwordhash contains password string |
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| 342 | */ |
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| 343 | private function setRememberMeCookie($user_id, $passwordhash) |
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| 353 | |||
| 354 | /** |
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| 355 | * Logout. |
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| 356 | */ |
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| 357 | public function logoutUser() |
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| 365 | |||
| 366 | /** |
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| 367 | * Checks if a login cookie is set. |
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| 368 | */ |
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| 369 | public function checkLoginCookie() |
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| 370 | { |
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| 371 | // Check for login cookie |
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| 372 | if (isset($_COOKIE['cs_cookie'])) { |
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| 373 | $cookie_array = explode('#', $_COOKIE['cs_cookie']); |
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| 374 | $cookie_user_id = (int) $cookie_array['0']; |
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| 375 | $cookie_password = (string) $cookie_array['1']; |
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| 376 | |||
| 377 | #Koch_Module_Controller::initModel('users'); |
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| 378 | |||
| 379 | $this->user = Doctrine_Query::create() |
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| 380 | ->select('u.user_id, u.passwordhash, u.salt') |
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| 381 | ->from('CsUsers u') |
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| 382 | ->where('u.user_id = ?') |
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| 383 | ->fetchOne([$user_id], Doctrine::HYDRATE_ARRAY); |
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| 384 | |||
| 385 | $this->moduleconfig = $this->config->readModuleConfig('account'); |
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| 386 | |||
| 387 | $hash_ok = Koch\Security::checkSaltedHash( |
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| 388 | $_COOKIE['cs_cookie_password'], |
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| 389 | $this->user['passwordhash'], |
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| 390 | $this->user['salt'], |
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| 391 | $this->moduleconfig['login']['hash_algorithm'] |
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| 392 | ); |
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| 393 | |||
| 394 | if (is_array($this->user) and $hash_ok and $_COOKIE['cs_cookie_user_id'] === $this->user['user_id']) { |
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| 395 | // Update the cookie |
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| 396 | $this->setRememberMeCookie($_COOKIE['cs_cookie_user_id'], $_COOKIE['cs_cookie_password']); |
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| 397 | |||
| 398 | // Create the user session array ($this->session['user'] etc.) by using this user_id |
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| 399 | $this->createUserSession($this->user['user_id']); |
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| 400 | |||
| 401 | // Update Session in DB |
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| 402 | $this->sessionSetUserId($this->user['user_id']); |
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| 403 | } else { |
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| 404 | // Delete cookies, if no match |
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| 405 | setcookie('cs_cookie_user_id', false); |
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| 406 | setcookie('cs_cookie_password', false); |
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| 407 | } |
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| 408 | } |
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| 409 | } |
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| 410 | |||
| 411 | /** |
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| 412 | * Sets user_id to current session. |
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| 413 | * |
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| 414 | * @param $user_id int The user_id to set to the session. |
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| 415 | */ |
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| 416 | public function sessionSetUserId($user_id) |
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| 417 | { |
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| 418 | $result = Doctrine_Query::create() |
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| 419 | ->select('user_id') |
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| 420 | ->from('CsSession') |
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| 421 | ->where('session_id = ?') |
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| 422 | ->fetchOne([session_id()]); |
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| 423 | |||
| 424 | /* |
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| 425 | * Update Session, because we know that session_id already exists |
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| 426 | */ |
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| 427 | if ($result) { |
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| 428 | $result->user_id = $user_id; |
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| 429 | $result->save(); |
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| 430 | |||
| 431 | return true; |
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| 432 | } |
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| 433 | |||
| 434 | return false; |
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| 435 | } |
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| 436 | |||
| 437 | /** |
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| 438 | * Checks, if the user is authorized to access a resource. |
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| 439 | * It's a proxy method forwarding to Authorization::isAuthorized(). |
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| 440 | * |
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| 441 | * @param string $module Module name, e.g. 'guestbook'. |
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| 442 | * @param string $permission Permission name, e.g. 'actionList'. |
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| 443 | * |
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| 444 | * @return bool True, if the user is authorized. Otherwise, false. |
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| 445 | */ |
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| 446 | public static function isAuthorized($module = '', $permission = '') |
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| 450 | |||
| 451 | /** |
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| 452 | * Deletes all USERS which have joined but are not activated after 3 days. |
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| 453 | * |
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| 454 | * 259200 = (60s * 60m * 24h * 3d) |
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| 455 | */ |
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| 456 | public function deleteJoinedButNotActivitatedUsers() |
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| 464 | |||
| 465 | /** |
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| 466 | * Check, whether a user is authenticated (logged in). |
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| 467 | * |
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| 468 | * @return bool Returns Tru,e if user is authenticated. Otherwise, false. |
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| 469 | */ |
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| 470 | public function isUserAuthenticated() |
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| 478 | |||
| 479 | /** |
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| 480 | * Returns the user_id from Session. |
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| 481 | * |
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| 482 | * @return int user_id |
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| 483 | */ |
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| 484 | public function getUserIdFromSession() |
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| 488 | } |
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| 489 |
This check looks for
@paramannotations where the type inferred by our type inference engine differs from the declared type.It makes a suggestion as to what type it considers more descriptive.
Most often this is a case of a parameter that can be null in addition to its declared types.