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-rw-r--r--system/codeigniter/Common.php421
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diff --git a/system/codeigniter/Common.php b/system/codeigniter/Common.php
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--- a/system/codeigniter/Common.php
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-<?php if ( ! defined('BASEPATH')) exit('No direct script access allowed');
-/**
- * CodeIgniter
- *
- * An open source application development framework for PHP 4.3.2 or newer
- *
- * @package CodeIgniter
- * @author ExpressionEngine Dev Team
- * @copyright Copyright (c) 2008 - 2010, EllisLab, Inc.
- * @license http://codeigniter.com/user_guide/license.html
- * @link http://codeigniter.com
- * @since Version 1.0
- * @filesource
- */
-
-// ------------------------------------------------------------------------
-
-/**
-* Determines if the current version of PHP is greater then the supplied value
-*
-* Since there are a few places where we conditionally test for PHP > 5
-* we'll set a static variable.
-*
-* @access public
-* @param string
-* @return bool
-*/
-function is_php($version = '5.0.0')
-{
- static $_is_php;
- $version = (string)$version;
-
- if ( ! isset($_is_php[$version]))
- {
- $_is_php[$version] = (version_compare(PHP_VERSION, $version) < 0) ? FALSE : TRUE;
- }
-
- return $_is_php[$version];
-}
-
-// ------------------------------------------------------------------------
-
-/**
- * Tests for file writability
- *
- * is_writable() returns TRUE on Windows servers when you really can't write to
- * the file, based on the read-only attribute. is_writable() is also unreliable
- * on Unix servers if safe_mode is on.
- *
- * @access private
- * @return void
- */
-function is_really_writable($file)
-{
- // If we're on a Unix server with safe_mode off we call is_writable
- if (DIRECTORY_SEPARATOR == '/' AND @ini_get("safe_mode") == FALSE)
- {
- return is_writable($file);
- }
-
- // For windows servers and safe_mode "on" installations we'll actually
- // write a file then read it. Bah...
- if (is_dir($file))
- {
- $file = rtrim($file, '/').'/'.md5(rand(1,100));
-
- if (($fp = @fopen($file, FOPEN_WRITE_CREATE)) === FALSE)
- {
- return FALSE;
- }
-
- fclose($fp);
- @chmod($file, DIR_WRITE_MODE);
- @unlink($file);
- return TRUE;
- }
- elseif (($fp = @fopen($file, FOPEN_WRITE_CREATE)) === FALSE)
- {
- return FALSE;
- }
-
- fclose($fp);
- return TRUE;
-}
-
-// ------------------------------------------------------------------------
-
-/**
-* Class registry
-*
-* This function acts as a singleton. If the requested class does not
-* exist it is instantiated and set to a static variable. If it has
-* previously been instantiated the variable is returned.
-*
-* @access public
-* @param string the class name being requested
-* @param bool optional flag that lets classes get loaded but not instantiated
-* @return object
-*/
-function &load_class($class, $instantiate = TRUE)
-{
- static $objects = array();
-
- // Does the class exist? If so, we're done...
- if (isset($objects[$class]))
- {
- return $objects[$class];
- }
-
- // If the requested class does not exist in the application/libraries
- // folder we'll load the native class from the system/libraries folder.
- if (file_exists(APPPATH.'libraries/'.config_item('subclass_prefix').$class.EXT))
- {
- require(BASEPATH.'libraries/'.$class.EXT);
- require(APPPATH.'libraries/'.config_item('subclass_prefix').$class.EXT);
- $is_subclass = TRUE;
- }
- else
- {
- if (file_exists(APPPATH.'libraries/'.$class.EXT))
- {
- require(APPPATH.'libraries/'.$class.EXT);
- $is_subclass = FALSE;
- }
- else
- {
- require(BASEPATH.'libraries/'.$class.EXT);
- $is_subclass = FALSE;
- }
- }
-
- if ($instantiate == FALSE)
- {
- $objects[$class] = TRUE;
- return $objects[$class];
- }
-
- if ($is_subclass == TRUE)
- {
- $name = config_item('subclass_prefix').$class;
-
- $objects[$class] =& instantiate_class(new $name());
- return $objects[$class];
- }
-
- $name = ($class != 'Controller') ? 'CI_'.$class : $class;
-
- $objects[$class] =& instantiate_class(new $name());
- return $objects[$class];
-}
-
-/**
- * Instantiate Class
- *
- * Returns a new class object by reference, used by load_class() and the DB class.
- * Required to retain PHP 4 compatibility and also not make PHP 5.3 cry.
- *
- * Use: $obj =& instantiate_class(new Foo());
- *
- * @access public
- * @param object
- * @return object
- */
-function &instantiate_class(&$class_object)
-{
- return $class_object;
-}
-
-/**
-* Loads the main config.php file
-*
-* @access private
-* @return array
-*/
-function &get_config()
-{
- static $main_conf;
-
- if ( ! isset($main_conf))
- {
- if ( ! file_exists(APPPATH.'config/config'.EXT))
- {
- exit('The configuration file config'.EXT.' does not exist.');
- }
-
- require(APPPATH.'config/config'.EXT);
-
- if ( ! isset($config) OR ! is_array($config))
- {
- exit('Your config file does not appear to be formatted correctly.');
- }
-
- $main_conf[0] =& $config;
- }
- return $main_conf[0];
-}
-
-/**
-* Gets a config item
-*
-* @access public
-* @return mixed
-*/
-function config_item($item)
-{
- static $config_item = array();
-
- if ( ! isset($config_item[$item]))
- {
- $config =& get_config();
-
- if ( ! isset($config[$item]))
- {
- return FALSE;
- }
- $config_item[$item] = $config[$item];
- }
-
- return $config_item[$item];
-}
-
-
-/**
-* Error Handler
-*
-* This function lets us invoke the exception class and
-* display errors using the standard error template located
-* in application/errors/errors.php
-* This function will send the error page directly to the
-* browser and exit.
-*
-* @access public
-* @return void
-*/
-function show_error($message, $status_code = 500)
-{
- $error =& load_class('Exceptions');
- echo $error->show_error('An Error Was Encountered', $message, 'error_general', $status_code);
- exit;
-}
-
-
-/**
-* 404 Page Handler
-*
-* This function is similar to the show_error() function above
-* However, instead of the standard error template it displays
-* 404 errors.
-*
-* @access public
-* @return void
-*/
-function show_404($page = '')
-{
- $error =& load_class('Exceptions');
- $error->show_404($page);
- exit;
-}
-
-
-/**
-* Error Logging Interface
-*
-* We use this as a simple mechanism to access the logging
-* class and send messages to be logged.
-*
-* @access public
-* @return void
-*/
-function log_message($level = 'error', $message, $php_error = FALSE)
-{
- static $LOG;
-
- $config =& get_config();
- if ($config['log_threshold'] == 0)
- {
- return;
- }
-
- $LOG =& load_class('Log');
- $LOG->write_log($level, $message, $php_error);
-}
-
-
-/**
- * Set HTTP Status Header
- *
- * @access public
- * @param int the status code
- * @param string
- * @return void
- */
-function set_status_header($code = 200, $text = '')
-{
- $stati = array(
- 200 => 'OK',
- 201 => 'Created',
- 202 => 'Accepted',
- 203 => 'Non-Authoritative Information',
- 204 => 'No Content',
- 205 => 'Reset Content',
- 206 => 'Partial Content',
-
- 300 => 'Multiple Choices',
- 301 => 'Moved Permanently',
- 302 => 'Found',
- 304 => 'Not Modified',
- 305 => 'Use Proxy',
- 307 => 'Temporary Redirect',
-
- 400 => 'Bad Request',
- 401 => 'Unauthorized',
- 403 => 'Forbidden',
- 404 => 'Not Found',
- 405 => 'Method Not Allowed',
- 406 => 'Not Acceptable',
- 407 => 'Proxy Authentication Required',
- 408 => 'Request Timeout',
- 409 => 'Conflict',
- 410 => 'Gone',
- 411 => 'Length Required',
- 412 => 'Precondition Failed',
- 413 => 'Request Entity Too Large',
- 414 => 'Request-URI Too Long',
- 415 => 'Unsupported Media Type',
- 416 => 'Requested Range Not Satisfiable',
- 417 => 'Expectation Failed',
-
- 500 => 'Internal Server Error',
- 501 => 'Not Implemented',
- 502 => 'Bad Gateway',
- 503 => 'Service Unavailable',
- 504 => 'Gateway Timeout',
- 505 => 'HTTP Version Not Supported'
- );
-
- if ($code == '' OR ! is_numeric($code))
- {
- show_error('Status codes must be numeric', 500);
- }
-
- if (isset($stati[$code]) AND $text == '')
- {
- $text = $stati[$code];
- }
-
- if ($text == '')
- {
- show_error('No status text available. Please check your status code number or supply your own message text.', 500);
- }
-
- $server_protocol = (isset($_SERVER['SERVER_PROTOCOL'])) ? $_SERVER['SERVER_PROTOCOL'] : FALSE;
-
- if (substr(php_sapi_name(), 0, 3) == 'cgi')
- {
- header("Status: {$code} {$text}", TRUE);
- }
- elseif ($server_protocol == 'HTTP/1.1' OR $server_protocol == 'HTTP/1.0')
- {
- header($server_protocol." {$code} {$text}", TRUE, $code);
- }
- else
- {
- header("HTTP/1.1 {$code} {$text}", TRUE, $code);
- }
-}
-
-
-/**
-* Exception Handler
-*
-* This is the custom exception handler that is declaired at the top
-* of Codeigniter.php. The main reason we use this is permit
-* PHP errors to be logged in our own log files since we may
-* not have access to server logs. Since this function
-* effectively intercepts PHP errors, however, we also need
-* to display errors based on the current error_reporting level.
-* We do that with the use of a PHP error template.
-*
-* @access private
-* @return void
-*/
-function _exception_handler($severity, $message, $filepath, $line)
-{
- // We don't bother with "strict" notices since they will fill up
- // the log file with information that isn't normally very
- // helpful. For example, if you are running PHP 5 and you
- // use version 4 style class functions (without prefixes
- // like "public", "private", etc.) you'll get notices telling
- // you that these have been deprecated.
-
- if ($severity == E_STRICT)
- {
- return;
- }
-
- $error =& load_class('Exceptions');
-
- // Should we display the error?
- // We'll get the current error_reporting level and add its bits
- // with the severity bits to find out.
-
- if (($severity & error_reporting()) == $severity)
- {
- $error->show_php_error($severity, $message, $filepath, $line);
- }
-
- // Should we log the error? No? We're done...
- $config =& get_config();
- if ($config['log_threshold'] == 0)
- {
- return;
- }
-
- $error->log_exception($severity, $message, $filepath, $line);
-}
-
-
-
-/* End of file Common.php */
-/* Location: ./system/codeigniter/Common.php */ \ No newline at end of file
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