lib/system/DNS.class.php

   1 <?php
   2 namespace dns\system;
   3
   4 if (!defined('DNS_VERSION')) define('DNS_VERSION', '3.0.0 Beta');
   5
   6 /**
   7  * @author      Jan Altensen (Stricted)
   8  * @license     GNU Lesser General Public License <http://opensource.org/licenses/lgpl-license.php>
   9  * @copyright   2014-2016 Jan Altensen (Stricted)
  10  */
  11 class DNS {
  12         /**
  13          * module name
  14          *
  15          * @var string
  16          */
  17         protected static $module = '';
  18
  19         /**
  20          * database object
  21          *
  22          * @var object
  23          */
  24         protected static $dbObj = null;
  25
  26         /**
  27          * session object
  28          *
  29          * @var object
  30          */
  31         protected static $sessionObj = null;
  32
  33         /**
  34          * template object
  35          *
  36          * @var object
  37          */
  38         protected static $tplObj = null;
  39
  40         /**
  41          * language array
  42          *
  43          * @var array
  44          */
  45         protected static $language = array();
  46
  47         /**
  48          * language code
  49          *
  50          * @var string
  51          */
  52         protected static $languageCode = '';
  53
  54         /**
  55          * init main system
  56          */
  57         public function __construct($module = '') {
  58                 self::$module = $module;
  59                 spl_autoload_register(array('dns\system\DNS', 'autoload'));
  60                 set_exception_handler(array('dns\system\DNS', 'handleException'));
  61                 set_error_handler(array('dns\system\DNS', 'handleError'), E_ALL);
  62
  63                 $this->initDB();
  64                 self::buildOptions();
  65                 $this->initSession();
  66                 $this->initLanguage();
  67                 $this->initTPL();
  68
  69                 AclHandler::getInstance();
  70
  71                 $requestHandler = RequestHandler::getInstance();
  72                 $requestHandler->setRoutes($module);
  73                 $requestHandler->handle();
  74         }
  75
  76         /**
  77          * get database
  78          */
  79         public static function getDB() {
  80                 return self::$dbObj;
  81         }
  82
  83         /**
  84          * init database
  85          */
  86         protected function initDB() {
  87                 require(DNS_DIR.'/config.inc.php');
  88                 self::$dbObj = new DB($driver, $host, $user, $pass, $db, $port);
  89         }
  90
  91         /**
  92          * init session system
  93          */
  94         protected function initSession() {
  95                 self::$sessionObj = new SessionHandler();
  96         }
  97
  98         /**
  99          * return session object
 100          */
 101         public static function getSession() {
 102                 return self::$sessionObj;
 103         }
 104
 105         /*
 106          * autoload class files from namespace uses
 107          *
 108          * @param    string    $className
 109          */
 110         public static function autoload ($className) {
 111                 $namespaces = explode('\\', $className);
 112                 if (count($namespaces) > 1) {
 113                         $abbreviation = array_shift($namespaces);
 114                         if ($abbreviation == "dns") {
 115                                 $classPath = DNS_DIR.'/lib/'.implode('/', $namespaces).'.class.php';
 116                                 if (file_exists($classPath)) {
 117                                         require_once($classPath);
 118                                 }
 119                         }
 120                         else if ($abbreviation == "Mso") {
 121                                 array_shift($namespaces);
 122
 123                                 $classPath = DNS_DIR.'/vendor/idna-convert/src/'.implode('/', $namespaces).'.php';
 124                                 if (file_exists($classPath)) {
 125                                         require_once($classPath);
 126                                 }
 127                         }
 128                         else if ($abbreviation == "Zend") {
 129                                 $classPath = DNS_DIR.'/vendor/Zend/'.implode('/', $namespaces).'.php';
 130                                 if (file_exists($classPath)) {
 131                                         require_once($classPath);
 132                                 }
 133                         }
 134                         else if ($abbreviation == "Interop") {
 135                                 $classPath = DNS_DIR.'/vendor/Interop/'.implode('/', $namespaces).'.php';
 136                                 if (file_exists($classPath)) {
 137                                         require_once($classPath);
 138                                 }
 139                         }
 140                 }
 141         }
 142
 143         /**
 144          * Calls the show method on the given exception.
 145          *
 146          * @param       \Exception      $e
 147          */
 148         public static final function handleException(\Exception $e) {
 149                 try {
 150                         if ($e instanceof SystemException) {
 151                                 $e->show();
 152                                 exit;
 153                         }
 154
 155                         // repack Exception
 156                         self::handleException(new SystemException($e->getMessage(), $e->getCode(), '', $e));
 157                 }
 158                 catch (\Exception $exception) {
 159                         die("<pre>DNS::handleException() Unhandled exception: ".$exception->getMessage()."\n\n".$exception->getTraceAsString());
 160                 }
 161         }
 162
 163         /**
 164          * Catches php errors and throws instead a system exception.
 165          *
 166          * @param       integer         $errorNo
 167          * @param       string          $message
 168          * @param       string          $filename
 169          * @param       integer         $lineNo
 170          */
 171         public static final function handleError($errorNo, $message, $filename, $lineNo) {
 172                 if (error_reporting() != 0) {
 173                         $type = 'error';
 174                         switch ($errorNo) {
 175                                 case 2:
 176                                         $type = 'warning';
 177                                         break;
 178                                 case 8:
 179                                         $type = 'notice';
 180                                         break;
 181                         }
 182
 183                         throw new SystemException('PHP '.$type.' in file '.$filename.' ('.$lineNo.'): '.$message, 0);
 184                 }
 185         }
 186
 187         /**
 188          * Returns true if the debug mode is enabled, otherwise false.
 189          *
 190          * @return      boolean
 191          */
 192         public static function debugModeIsEnabled() {
 193                 // try to load constants
 194                 if (!defined('ENABLE_DEBUG')) {
 195                         self::buildOptions();
 196                 }
 197
 198                 if (defined('ENABLE_DEBUG') && ENABLE_DEBUG) {
 199                         return true;
 200                 }
 201
 202                 return false;
 203         }
 204
 205         /**
 206          * init language system
 207          */
 208         protected function initLanguage () {
 209                 /*
 210                  * @TODO: activate this later
 211                  * self::buildlanguage();
 212                  */
 213                 $availableLanguages = array("de", "en");
 214                 $languageCode = 'de';
 215
 216                 if (isset($_GET['l'])) {
 217                         $code = strtolower($_GET['l']);
 218                         if (in_array($code, $availableLanguages)) {
 219                                 $languageCode = $code;
 220                         }
 221                         else if (array_key_exists($code, $availableLanguages)) {
 222                                 $languageCode = $availableLanguages[$code];
 223                         }
 224                 }
 225                 else if (self::getSession()->language !== null) {
 226                         $code = strtolower(self::getSession()->language);
 227                         if (in_array($code, $availableLanguages)) {
 228                                 $languageCode = $code;
 229                         }
 230                         else if (array_key_exists($code, $availableLanguages)) {
 231                                 $languageCode = $availableLanguages[$code];
 232                         }
 233                 }
 234                 else if (isset($_SERVER['HTTP_ACCEPT_LANGUAGE']) && $_SERVER['HTTP_ACCEPT_LANGUAGE']) {
 235                         $acceptedLanguages = explode(',', str_replace('_', '-', strtolower($_SERVER['HTTP_ACCEPT_LANGUAGE'])));
 236                         foreach ($acceptedLanguages as $acceptedLanguage) {
 237                                 $code = strtolower(preg_replace('%^([a-z]{2}).*$%i', '$1', $acceptedLanguage));
 238                                 if (in_array($code, $availableLanguages)) {
 239                                         $languageCode = $code;
 240                                         break;
 241                                 }
 242                         }
 243                 }
 244
 245                 self::$languageCode = $languageCode;
 246
 247                 // @TODO: remove this later
 248                 /* try to load module language files */
 249                 if (!empty(self::$module)) {
 250                         $basedir = DNS_DIR.'/'.self::$module.'/lang/';
 251                         $file = $basedir.$languageCode.'.lang.php';
 252                         self::getSession()->register('language', $languageCode);
 253
 254                         if (file_exists($file)) {
 255                                 require_once($file);
 256                                 if (isset($lang) && !empty($lang) && is_array($lang)) {
 257                                         $this->language = array_merge($this->language, $lang);
 258                                 }
 259                         }
 260                 }
 261
 262                 /* load default language files */
 263                 $basedir = DNS_DIR.'/lang/';
 264                 $file = $basedir.$languageCode.'.lang.php';
 265                 self::getSession()->register('language', $languageCode);
 266
 267                 if (file_exists($file)) {
 268                         require_once($file);
 269                         if (isset($lang) && !empty($lang) && is_array($lang)) {
 270                                 self::$language = array_merge(self::$language, $lang);
 271                         }
 272                 }
 273
 274                 return;
 275         }
 276
 277         /**
 278          * Executes template scripting in a language variable.
 279          *
 280          * @param       string          $item
 281          * @param       array           $variables
 282          * @return      string          result
 283          */
 284         public static function getLanguageVariable ($item, array $variables = array()) {
 285                 $lang = self::$language;
 286
 287                 if ($lang == null) {
 288                         return $item;
 289                 }
 290
 291                 if (!empty($variables)) {
 292                         self::getTPL()->assign($variables);
 293                 }
 294
 295                 if (isset($lang[$item])) {
 296                         if (strpos($lang[$item], self::getTPL()->left_delimiter) !== false && strpos($lang[$item], self::getTPL()->right_delimiter) !== false) {
 297                                 $data = str_replace("\$", '$', $lang[$item]);
 298                                 $dir = self::getTPL()->getTemplateDir();
 299
 300                                 if (is_array($dir)) {
 301                                         $dir = $dir[0];
 302                                 }
 303
 304                                 $filename = "lang.".self::$languageCode.".".sha1($item).".tpl";
 305                                 if (file_exists($dir.$filename)) {
 306                                         $mtime = filemtime($dir.$filename);
 307                                         $maxLifetime = 3600;
 308
 309                                         if ($mtime === false || ($maxLifetime > 0 && (time() - $mtime) > $maxLifetime)) {
 310                                                 @unlink($dir.$filename);
 311                                         }
 312                                 }
 313
 314                                 if (!file_exists($dir.$filename)) {
 315                                         $h = fopen($dir.$filename, "a+");
 316                                         fwrite($h, '{* '.$item.' *}'.$lang[$item]);
 317                                         fclose($h);
 318                                 }
 319
 320                                 return self::getTPL()->fetch($filename);
 321                         }
 322
 323                         return $lang[$item];
 324                 }
 325
 326                 return $item;
 327         }
 328
 329         /**
 330          * init template engine
 331          */
 332         protected function initTPL () {
 333                 require(DNS_DIR.'/config.inc.php');
 334
 335                 if (self::getSession()->tpl !== null && !empty(self::getSession()->tpl)) {
 336                         $tpl = self::getSession()->tpl;
 337                 }
 338
 339                 if (!file_exists(DNS_DIR.'/vendor/smarty/libs/Smarty.class.php')) {
 340                         throw new SystemException('Unable to find Smarty');
 341                 }
 342
 343                 require_once(DNS_DIR.'/vendor/smarty/libs/Smarty.class.php');
 344                 self::$tplObj = new \Smarty;
 345
 346                 if (!empty(self::$module)) {
 347                         // try first to load the template from module then from core
 348                         self::getTPL()->addTemplateDir(DNS_DIR.'/'.self::$module."/templates/".$tpl);
 349                 }
 350
 351                 self::getTPL()->addTemplateDir(DNS_DIR."/templates/".$tpl);
 352                 self::getTPL()->setCompileDir(DNS_DIR.(empty(self::$module) ? '' : '/'.self::$module)."/templates/compiled/".$tpl);
 353                 self::getTPL()->setPluginsDir(array(
 354                         DNS_DIR."/vendor/smarty/libs/plugins",
 355                         DNS_DIR."/lib/system/template/plugins"
 356                 ));
 357                 self::getTPL()->loadFilter('pre', 'hascontent');
 358
 359                 if (!ENABLE_DEBUG) {
 360                         self::getTPL()->loadFilter('output', 'trimwhitespace');
 361                 }
 362
 363                 /* assign language variables */
 364                 self::getTPL()->assign(array(
 365                         "isReseller" => User::isReseller(),
 366                         "isAdmin" => User::isAdmin(),
 367                         'baseurl' => RequestHandler::getInstance()->getBaseUrl()
 368                 ));
 369
 370                 /*self::getTPL()->assign("version", mb_substr(sha1(DNS_VERSION), 0, 8));*/
 371
 372         }
 373
 374         /**
 375          * get template engine
 376          */
 377         public static function getTPL () {
 378                 return self::$tplObj;
 379         }
 380
 381         /**
 382          * Creates a random hash.
 383          *
 384          * @return      string
 385          */
 386         public static function generateRandomID() {
 387                 return sha1(microtime() . uniqid(mt_rand(), true));
 388         }
 389
 390         /**
 391          * Creates an UUID.
 392          *
 393          * @return      string
 394          */
 395         public static function generateUUID() {
 396                 return strtoupper(sprintf('%04x%04x-%04x-%04x-%04x-%04x%04x%04x', mt_rand(0, 65535), mt_rand(0, 65535), mt_rand(0, 65535), mt_rand(16384, 20479), mt_rand(32768, 49151), mt_rand(0, 65535), mt_rand(0, 65535), mt_rand(0, 65535)));
 397         }
 398
 399         /**
 400          * build options from database
 401          *
 402          * @param       boolean $force
 403          */
 404         public static function buildOptions ($force = false) {
 405                 $file = DNS_DIR."/options.inc.php";
 406                 if (!file_exists($file) || (filemtime($file) + 86400) < time() || $force === true) {
 407                         if (file_exists($file)) {
 408                                 @unlink($file);
 409                         }
 410
 411                         @touch($file);
 412                         $options = self::getDB()->query("select * from dns_options");
 413                         $content = "<?php\n/* generated at ".gmdate('r')." */\n";
 414
 415                         while ($row = self::getDB()->fetch_array($options)) {
 416                                 $content .= "if (!defined('".strtoupper($row['optionName'])."')) define('".strtoupper($row['optionName'])."', ".((is_bool($row['optionValue']) || is_numeric($row['optionValue'])) ? intval($row['optionValue']) : "'".addcslashes($row['optionValue'], "'\\")."'").");\n";
 417                         }
 418
 419                         $handler = fOpen($file, "a+");
 420                         fWrite($handler, $content);
 421                         fClose($handler);
 422                 }
 423
 424                 require_once($file);
 425         }
 426
 427         /**
 428          * build language files from database
 429          *
 430          * @param       boolean $force
 431          */
 432         public static function buildlanguage ($force = false) {
 433                 $availableLanguages = array("de", "en");
 434                 foreach ($availableLanguages as $languageID => $languageCode) {
 435
 436                         $file = DNS_DIR."/lang/".$languageCode.".lang.php";
 437                         if (!file_exists($file) || (filemtime($file) + 86400) < time() || $force === true) {
 438                                 if (file_exists($file)) {
 439                                         @unlink($file);
 440                                 }
 441
 442                                 @touch($file);
 443
 444                                 $items = self::getDB()->query("select * from dns_language where languageID = ?", array($languageID));
 445                                 $content = "<?php\n/**\n* language: ".$languageCode."\n* encoding: UTF-8\n* generated at ".gmdate("r")."\n* \n* DO NOT EDIT THIS FILE\n*/\n";
 446                                 $content .= "\$lang = array();\n";
 447                                 while ($row = self::getDB()->fetch_array($items)) {
 448                                         print_r($row);
 449                                         $content .= "\$lang['".$row['languageItem']."'] = '".str_replace("\$", '$', $row['languageValue'])."';\n";
 450                                 }
 451
 452                                 $handler = fOpen($file, "a+");
 453                                 fWrite($handler, $content);
 454                                 fClose($handler);
 455                         }
 456                 }
 457         }
 458 }