index.php

   1 <?php
   2 // Own namespace (watch out: core)
   3 namespace Org\Mxchange\CoreFramework\EntryPoint;
   4
   5 // Import framework stuff
   6 use Org\Mxchange\CoreFramework\Bootstrap\FrameworkBootstrap;
   7 use Org\Mxchange\CoreFramework\Factory\Object\ObjectFactory;
   8 use Org\Mxchange\CoreFramework\Filesystem\FileNotFoundException;
   9 use Org\Mxchange\CoreFramework\Helper\Application\ApplicationHelper;
  10 use Org\Mxchange\CoreFramework\Localization\LanguageSystem;
  11 use Org\Mxchange\CoreFramework\Localization\ManageableLanguage;
  12 use Org\Mxchange\CoreFramework\Loader\ClassLoader;
  13 use Org\Mxchange\CoreFramework\Generic\FrameworkException;
  14
  15 // Import SPL stuff
  16 use \Exception;
  17
  18 /**
  19  * The main class with the entry point to the whole application. This class
  20  * "emulates" Java's entry point call. Additionally it covers local
  21  * variables from outside access to prevent possible attacks on uninitialized
  22  * local variables.
  23  *
  24  * But good little boys and girls would always initialize their variables... ;-)
  25  *
  26  * @author              Roland Haeder <webmaster@shipsimu.org>
  27  * @version             0.0.0
  28  * @copyright   Copyright (c) 2007, 2008 Roland Haeder, 2009 - 2020 Core Developer Team
  29  * @license             GNU GPL 3.0 or any newer version
  30  * @link                http://www.shipsimu.org
  31  *
  32  * This program is free software: you can redistribute it and/or modify
  33  * it under the terms of the GNU General Public License as published by
  34  * the Free Software Foundation, either version 3 of the License, or
  35  * (at your option) any later version.
  36  *
  37  * This program is distributed in the hope that it will be useful,
  38  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  39  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  40  * GNU General Public License for more details.
  41  *
  42  * You should have received a copy of the GNU General Public License
  43  * along with this program. If not, see <http://www.gnu.org/licenses/>.
  44  */
  45 final class ApplicationEntryPoint {
  46         /**
  47          * Framework path
  48          */
  49         private static $frameworkPath = '';
  50
  51         /**
  52          * The application's emergency exit
  53          *
  54          * @param       $message                The optional message we shall output on exit
  55          * @param       $code                   Error code from exception
  56          * @param       $extraData              Extra information from exceptions
  57          * @param       $silentMode             Whether silent mode is turned on
  58          * @return      void
  59          * @todo        This method is old code and needs heavy rewrite and should be moved to ApplicationHelper
  60          */
  61         public static final function exitApplication (string $message = '', int $code = -1, string $extraData = '', bool $silentMode = false) {
  62                 // Is this method already called?
  63                 if (isset($GLOBALS['app_die_called'])) {
  64                         // Then output the text directly
  65                         exit($message);
  66                 }
  67
  68                 // This method shall not be called twice
  69                 $GLOBALS['app_die_called'] = true;
  70
  71                 // Is a message set?
  72                 if (empty($message)) {
  73                         // No message provided
  74                         $message = 'No message provided.';
  75                 }
  76
  77                 // Get config instance
  78                 $configInstance = FrameworkBootstrap::getConfigurationInstance();
  79
  80                 // Do we have debug installation?
  81                 if (($configInstance->getConfigEntry('product_install_mode') == 'productive') || ($silentMode === true)) {
  82                         // Abort here
  83                         exit;
  84                 }
  85
  86                 // Get some instances
  87                 $templateClassName = $configInstance->getConfigEntry('html_template_class');
  88                 $languageInstance = LanguageSystem::getSelfInstance();
  89
  90                 // Initialize template instance here to avoid warnings in IDE
  91                 $templateInstance = NULL;
  92
  93                 // Get response instance
  94                 $responseInstance = FrameworkBootstrap::getResponseInstance();
  95
  96                 // Is the template engine loaded?
  97                 if ((class_exists($templateClassName)) && ($languageInstance instanceof ManageableLanguage)) {
  98                         // Use the template engine for putting out (nicer look) the message
  99                         try {
 100                                 // Get the template instance from our object factory
 101                                 $templateInstance = ObjectFactory::createObjectByName($templateClassName);
 102                         } catch (FrameworkException $e) {
 103                                 exit(sprintf('[Main:] Could not initialize template engine for reason: <span class="exception_reason">%s</span>',
 104                                         $e->getMessage()
 105                                 ));
 106                         }
 107
 108                         // Get and prepare backtrace for output
 109                         $backtrace = '';
 110                         foreach (debug_backtrace() as $key => $trace) {
 111                                 // Set missing array elements
 112                                 if (!isset($trace['file'])) {
 113                                         $trace['file'] = __FILE__;
 114                                 }
 115                                 if (!isset($trace['line'])) {
 116                                         $trace['line'] = __LINE__;
 117                                 }
 118                                 if (!isset($trace['args'])) {
 119                                         $trace['args'] = array();
 120                                 }
 121
 122                                 // Add the traceback path to the final output
 123                                 $backtrace .= sprintf('<span class="backtrace_file">%s</span>:%d, <span class="backtrace_function">%s(%d)</span><br />' . PHP_EOL,
 124                                         basename($trace['file']),
 125                                         $trace['line'],
 126                                         $trace['function'],
 127                                         count($trace['args'])
 128                                 );
 129                         }
 130
 131                         // Init application instance
 132                         $applicationInstance = NULL;
 133
 134                         /*
 135                          * The following class may NOT be loaded at all times. For example,
 136                          * it might be the (rare) case that an error has happened BEFORE
 137                          * that class had been loaded and cannot be loaded or else an
 138                          * infinte loop in invoking this method will take place resulting in
 139                          * a stack-overflow error.
 140                          */
 141                         if (class_exists('Org\Mxchange\CoreFramework\Helper\Application\ApplicationHelper')) {
 142                                 // Get application instance
 143                                 $applicationInstance = ApplicationHelper::getSelfInstance();
 144
 145                                 // Assign application data
 146                                 $templateInstance->assignApplicationData();
 147                         }
 148
 149                         // We only try this
 150                         try {
 151                                 // Assign variables
 152                                 $templateInstance->assignVariable('message'       , $message);
 153                                 $templateInstance->assignVariable('code'          , $code);
 154                                 $templateInstance->assignVariable('extra'         , $extraData);
 155                                 $templateInstance->assignVariable('backtrace'     , $backtrace);
 156                                 $templateInstance->assignVariable('total_includes', ClassLoader::getSelfInstance()->getTotal());
 157                                 $templateInstance->assignVariable('total_objects' , ObjectFactory::getTotal());
 158                                 $templateInstance->assignVariable('title'         , $languageInstance->getMessage('emergency_exit_title'));
 159
 160                                 // Load the template
 161                                 $templateInstance->loadCodeTemplate('emergency_exit');
 162
 163                                 // Compile the template
 164                                 $templateInstance->compileTemplate();
 165
 166                                 // Compile all variables
 167                                 $templateInstance->compileVariables();
 168
 169                                 // Transfer data to response
 170                                 $templateInstance->transferToResponse($responseInstance);
 171
 172                                 // Flush the response
 173                                 $responseInstance->flushBuffer();
 174                         } catch (FileNotFoundException $e) {
 175                                 // Even the template 'emergency_exit' wasn't found so output both message
 176                                 exit($message . ', exception: ' . $e->getMessage());
 177                         }
 178
 179                         // Good bye...
 180                         exit;
 181                 } else {
 182                         // Output message and die
 183                         die(sprintf('[Main:] Emergency exit reached: <span class="emergency_span">%s</span>',
 184                                 $message
 185                         ));
 186                 }
 187         }
 188
 189         /**
 190          * Determines the correct absolute path for the framework. A set of common
 191          * paths is being tested (first most common for applications, second when
 192          * core tests are being executed and third/forth if the framework has been
 193          * cloned there).
 194          *
 195          * @return      $frameworkPath  Path for framework
 196          */
 197         public static final function detectFrameworkPath () {
 198                 // Is it not set?
 199                 if (empty(self::$frameworkPath)) {
 200                         // Auto-detect core path (first application-common)
 201                         foreach (array('core', __DIR__, '/usr/local/share/php/core', '/usr/share/php/core') as $possiblePath) {
 202                                 // Create full path for testing
 203                                 $realPath = realpath($possiblePath);
 204
 205                                 // Is it false?
 206                                 //* NOISY-DEBUG: */ printf('[%s:%d]: realPath[%s]=%s' . PHP_EOL, __METHOD__, __LINE__, gettype($realPath), $realPath);
 207                                 if ($realPath === false) {
 208                                         // Then, not found.
 209                                         continue;
 210                                 }
 211
 212                                 // Append framework path
 213                                 $frameworkPath = sprintf('%s%sframework%s', $realPath, DIRECTORY_SEPARATOR, DIRECTORY_SEPARATOR);
 214
 215                                 // First create full-qualified file name (FQFN) to framework/config-global.php
 216                                 $configFile = $frameworkPath . 'config-global.php';
 217
 218                                 // Is it readable?
 219                                 //* NOISY-DEBUG: */ printf('[%s:%d]: configFile=%s' . PHP_EOL, __METHOD__, __LINE__, $configFile);
 220                                 if (is_readable($configFile)) {
 221                                         // Found one
 222                                         self::$frameworkPath = $frameworkPath;
 223
 224                                         // Abort here
 225                                         break;
 226                                 }
 227                         }
 228
 229                         // Able to find?
 230                         if (!is_dir(self::$frameworkPath)) {
 231                                 // Is no directory
 232                                 throw new Exception('Cannot find framework.');
 233                         }
 234                 }
 235
 236                 // Return it
 237                 return self::$frameworkPath;
 238         }
 239
 240         /**
 241          * Getter for root path
 242          *
 243          * @return      $rootPath       Root path
 244          */
 245         public static function getRootPath () {
 246                 // Get __DIR__, really simple and no detection
 247                 return __DIR__;
 248         }
 249
 250         /**
 251          * The framework's main entry point. This class isolates some local
 252          * variables which shall not become visible to outside because of security
 253          * concerns. This is done here to "emulate" the well-known entry point in
 254          * Java.
 255          *
 256          * @return      void
 257          */
 258         public static final function main () {
 259                 // Load bootstrap file
 260                 require sprintf('%sbootstrap%sbootstrap.inc.php', self::detectFrameworkPath(), DIRECTORY_SEPARATOR);
 261
 262                 /*
 263                  * Initial bootstrap is done, continue with initialization of
 264                  * framework.
 265                  */
 266                 FrameworkBootstrap::initFramework();
 267
 268                 // Next initialize the detected application
 269                 FrameworkBootstrap::prepareApplication();
 270
 271                 /*
 272                  * Last step is to start the application, this will also initialize and
 273                  * register the application instance in registry.
 274                  */
 275                 FrameworkBootstrap::startApplication();
 276         }
 277 }
 278
 279 // Log all exceptions (only debug! This option can create large error logs)
 280 //define('LOG_EXCEPTIONS', true);
 281
 282 //xdebug_start_trace();
 283
 284 // Call above main() method
 285 ApplicationEntryPoint::main();