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-rwxr-xr-xsystem/core/CodeIgniter.php50
-rwxr-xr-xsystem/core/Common.php44
-rwxr-xr-xsystem/core/Config.php30
-rwxr-xr-xsystem/core/Hooks.php10
-rwxr-xr-xsystem/core/Input.php68
-rwxr-xr-xsystem/core/Lang.php7
-rwxr-xr-xsystem/core/Loader.php45
-rwxr-xr-xsystem/core/Output.php77
-rwxr-xr-xsystem/core/Router.php12
-rwxr-xr-xsystem/core/Security.php820
-rwxr-xr-xsystem/core/URI.php69
-rwxr-xr-xsystem/core/Utf8.php2
12 files changed, 1127 insertions, 107 deletions
diff --git a/system/core/CodeIgniter.php b/system/core/CodeIgniter.php
index 2d3f24958..e022e1b46 100755
--- a/system/core/CodeIgniter.php
+++ b/system/core/CodeIgniter.php
@@ -32,7 +32,14 @@
* Define the CodeIgniter Version
* ------------------------------------------------------
*/
- define('CI_VERSION', '2.0');
+ define('CI_VERSION', '2.0.2');
+
+/*
+ * ------------------------------------------------------
+ * Define the CodeIgniter Branch (Core = TRUE, Reactor = FALSE)
+ * ------------------------------------------------------
+ */
+ define('CI_CORE', FALSE);
/*
* ------------------------------------------------------
@@ -46,7 +53,14 @@
* Load the framework constants
* ------------------------------------------------------
*/
- require(APPPATH.'config/constants'.EXT);
+ if (defined('ENVIRONMENT') AND file_exists(APPPATH.'config/'.ENVIRONMENT.'/constants'.EXT))
+ {
+ require(APPPATH.'config/'.ENVIRONMENT.'/constants'.EXT);
+ }
+ else
+ {
+ require(APPPATH.'config/constants'.EXT);
+ }
/*
* ------------------------------------------------------
@@ -80,7 +94,7 @@
{
get_config(array('subclass_prefix' => $assign_to_config['subclass_prefix']));
}
-
+
/*
* ------------------------------------------------------
* Set a liberal script execution time limit
@@ -183,6 +197,13 @@
}
/*
+ * -----------------------------------------------------
+ * Load the security class for xss and csrf support
+ * -----------------------------------------------------
+ */
+ $SEC =& load_class('Security', 'core');
+
+/*
* ------------------------------------------------------
* Load the Input class and sanitize globals
* ------------------------------------------------------
@@ -289,7 +310,28 @@
// methods, so we'll use this workaround for consistent behavior
if ( ! in_array(strtolower($method), array_map('strtolower', get_class_methods($CI))))
{
- show_404("{$class}/{$method}");
+ // Check and see if we are using a 404 override and use it.
+ if ( ! empty($RTR->routes['404_override']))
+ {
+ $x = explode('/', $RTR->routes['404_override']);
+ $class = $x[0];
+ $method = (isset($x[1]) ? $x[1] : 'index');
+ if ( ! class_exists($class))
+ {
+ if ( ! file_exists(APPPATH.'controllers/'.$class.EXT))
+ {
+ show_404("{$class}/{$method}");
+ }
+
+ include_once(APPPATH.'controllers/'.$class.EXT);
+ unset($CI);
+ $CI = new $class();
+ }
+ }
+ else
+ {
+ show_404("{$class}/{$method}");
+ }
}
// Call the requested method.
diff --git a/system/core/Common.php b/system/core/Common.php
index b5adfacb3..1aca809ab 100755
--- a/system/core/Common.php
+++ b/system/core/Common.php
@@ -88,7 +88,7 @@
@unlink($file);
return TRUE;
}
- elseif (($fp = @fopen($file, FOPEN_WRITE_CREATE)) === FALSE)
+ elseif ( ! is_file($file) OR ($fp = @fopen($file, FOPEN_WRITE_CREATE)) === FALSE)
{
return FALSE;
}
@@ -208,16 +208,20 @@
return $_config[0];
}
- // Fetch the config file
- if ( ! file_exists(APPPATH.'config/config'.EXT))
+ // Is the config file in the environment folder?
+ if ( ! defined('ENVIRONMENT') OR ! file_exists($file_path = APPPATH.'config/'.ENVIRONMENT.'/config'.EXT))
{
- exit('The configuration file does not exist.');
+ $file_path = APPPATH.'config/config'.EXT;
}
- else
+
+ // Fetch the config file
+ if ( ! file_exists($file_path))
{
- require(APPPATH.'config/config'.EXT);
+ exit('The configuration file does not exist.');
}
+ require($file_path);
+
// Does the $config array exist in the file?
if ( ! isset($config) OR ! is_array($config))
{
@@ -472,28 +476,26 @@
* @param string
* @return string
*/
- function remove_invisible_characters($str)
+ function remove_invisible_characters($str, $url_encoded = TRUE)
{
- static $non_displayables;
-
- if ( ! isset($non_displayables))
+ $non_displayables = array();
+
+ // every control character except newline (dec 10)
+ // carriage return (dec 13), and horizontal tab (dec 09)
+
+ if ($url_encoded)
{
- // every control character except newline (dec 10), carriage return (dec 13), and horizontal tab (dec 09),
- $non_displayables = array(
- '/%0[0-8bcef]/', // url encoded 00-08, 11, 12, 14, 15
- '/%1[0-9a-f]/', // url encoded 16-31
- '/[\x00-\x08]/', // 00-08
- '/\x0b/', '/\x0c/', // 11, 12
- '/[\x0e-\x1f]/' // 14-31
- );
+ $non_displayables[] = '/%0[0-8bcef]/'; // url encoded 00-08, 11, 12, 14, 15
+ $non_displayables[] = '/%1[0-9a-f]/'; // url encoded 16-31
}
+
+ $non_displayables[] = '/[\x00-\x08\x0B\x0C\x0E-\x1F\x7F]+/S'; // 00-08, 11, 12, 14-31, 127
do
{
- $cleaned = $str;
- $str = preg_replace($non_displayables, '', $str);
+ $str = preg_replace($non_displayables, '', $str, -1, $count);
}
- while ($cleaned != $str);
+ while ($count);
return $str;
}
diff --git a/system/core/Config.php b/system/core/Config.php
index bfb60fa44..863c5ef4b 100755
--- a/system/core/Config.php
+++ b/system/core/Config.php
@@ -51,7 +51,7 @@ class CI_Config {
// Set the base_url automatically if none was provided
if ($this->config['base_url'] == '')
{
- if(isset($_SERVER['HTTP_HOST']))
+ if (isset($_SERVER['HTTP_HOST']))
{
$base_url = isset($_SERVER['HTTPS']) && strtolower($_SERVER['HTTPS']) !== 'off' ? 'https' : 'http';
$base_url .= '://'. $_SERVER['HTTP_HOST'];
@@ -74,24 +74,40 @@ class CI_Config {
*
* @access public
* @param string the config file name
+ * @param boolean if configuration values should be loaded into their own section
+ * @param boolean true if errors should just return false, false if an error message should be displayed
* @return boolean if the file was loaded correctly
*/
function load($file = '', $use_sections = FALSE, $fail_gracefully = FALSE)
{
$file = ($file == '') ? 'config' : str_replace(EXT, '', $file);
+ $found = FALSE;
$loaded = FALSE;
- foreach($this->_config_paths as $path)
+ foreach ($this->_config_paths as $path)
{
- $file_path = $path.'config/'.$file.EXT;
+ $check_locations = defined('ENVIRONMENT')
+ ? array(ENVIRONMENT.'/'.$file, $file)
+ : array($file);
- if (in_array($file_path, $this->is_loaded, TRUE))
+ foreach ($check_locations as $location)
{
- $loaded = TRUE;
- continue;
+ $file_path = $path.'config/'.$location.EXT;
+
+ if (in_array($file_path, $this->is_loaded, TRUE))
+ {
+ $loaded = TRUE;
+ continue 2;
+ }
+
+ if (file_exists($file_path))
+ {
+ $found = TRUE;
+ break;
+ }
}
- if ( ! file_exists($path.'config/'.$file.EXT))
+ if ($found === FALSE)
{
continue;
}
diff --git a/system/core/Hooks.php b/system/core/Hooks.php
index 75fd811b0..24fa1055b 100755
--- a/system/core/Hooks.php
+++ b/system/core/Hooks.php
@@ -65,7 +65,15 @@ class CI_Hooks {
// Grab the "hooks" definition file.
// If there are no hooks, we're done.
- @include(APPPATH.'config/hooks'.EXT);
+ if (defined('ENVIRONMENT') AND is_file(APPPATH.'config/'.ENVIRONMENT.'/hooks'.EXT))
+ {
+ include(APPPATH.'config/'.ENVIRONMENT.'/hooks'.EXT);
+ }
+ elseif (is_file(APPPATH.'config/hooks'.EXT))
+ {
+ include(APPPATH.'config/hooks'.EXT);
+ }
+
if ( ! isset($hook) OR ! is_array($hook))
{
diff --git a/system/core/Input.php b/system/core/Input.php
index 3e82874fd..dc7612e64 100755
--- a/system/core/Input.php
+++ b/system/core/Input.php
@@ -53,11 +53,8 @@ class CI_Input {
$this->_enable_xss = (config_item('global_xss_filtering') === TRUE);
$this->_enable_csrf = (config_item('csrf_protection') === TRUE);
- // Do we need to load the security class?
- if ($this->_enable_xss == TRUE OR $this->_enable_csrf == TRUE)
- {
- $this->security =& load_class('Security');
- }
+ global $SEC;
+ $this->security =& $SEC;
// Do we need the UTF-8 class?
if (UTF8_ENABLED === TRUE)
@@ -92,8 +89,7 @@ class CI_Input {
if ($xss_clean === TRUE)
{
- $_security =& load_class('Security');
- return $_security->xss_clean($array[$index]);
+ return $this->security->xss_clean($array[$index]);
}
return $array[$index];
@@ -109,8 +105,21 @@ class CI_Input {
* @param bool
* @return string
*/
- function get($index = '', $xss_clean = FALSE)
+ function get($index = NULL, $xss_clean = FALSE)
{
+ // Check if a field has been provided
+ if ($index === NULL AND ! empty($_GET))
+ {
+ $get = array();
+
+ // loop through the full _GET array
+ foreach (array_keys($_GET) as $key)
+ {
+ $get[$key] = $this->_fetch_from_array($_GET, $key, $xss_clean);
+ }
+ return $get;
+ }
+
return $this->_fetch_from_array($_GET, $index, $xss_clean);
}
@@ -124,8 +133,21 @@ class CI_Input {
* @param bool
* @return string
*/
- function post($index = '', $xss_clean = FALSE)
+ function post($index = NULL, $xss_clean = FALSE)
{
+ // Check if a field has been provided
+ if ($index === NULL AND ! empty($_POST))
+ {
+ $post = array();
+
+ // Loop through the full _POST array and return it
+ foreach (array_keys($_POST) as $key)
+ {
+ $post[$key] = $this->_fetch_from_array($_POST, $key, $xss_clean);
+ }
+ return $post;
+ }
+
return $this->_fetch_from_array($_POST, $index, $xss_clean);
}
@@ -182,13 +204,15 @@ class CI_Input {
* @param string the cookie domain. Usually: .yourdomain.com
* @param string the cookie path
* @param string the cookie prefix
+ * @param bool true makes the cookie secure
* @return void
*/
- function set_cookie($name = '', $value = '', $expire = '', $domain = '', $path = '/', $prefix = '')
+ function set_cookie($name = '', $value = '', $expire = '', $domain = '', $path = '/', $prefix = '', $secure = FALSE)
{
if (is_array($name))
{
- foreach (array('value', 'expire', 'domain', 'path', 'prefix', 'name') as $item)
+ // always leave 'name' in last place, as the loop will break otherwise, due to $$item
+ foreach (array('value', 'expire', 'domain', 'path', 'prefix', 'secure', 'name') as $item)
{
if (isset($name[$item]))
{
@@ -209,6 +233,10 @@ class CI_Input {
{
$path = config_item('cookie_path');
}
+ if ($secure == FALSE AND config_item('cookie_secure') != FALSE)
+ {
+ $secure = config_item('cookie_secure');
+ }
if ( ! is_numeric($expire))
{
@@ -219,7 +247,7 @@ class CI_Input {
$expire = ($expire > 0) ? time() + $expire : 0;
}
- setcookie($prefix.$name, $value, $expire, $path, $domain, 0);
+ setcookie($prefix.$name, $value, $expire, $path, $domain, $secure);
}
// --------------------------------------------------------------------
@@ -413,7 +441,7 @@ class CI_Input {
{
if (is_array($_GET) AND count($_GET) > 0)
{
- foreach($_GET as $key => $val)
+ foreach ($_GET as $key => $val)
{
$_GET[$this->_clean_input_keys($key)] = $this->_clean_input_data($val);
}
@@ -423,7 +451,7 @@ class CI_Input {
// Clean $_POST Data
if (is_array($_POST) AND count($_POST) > 0)
{
- foreach($_POST as $key => $val)
+ foreach ($_POST as $key => $val)
{
$_POST[$this->_clean_input_keys($key)] = $this->_clean_input_data($val);
}
@@ -441,7 +469,7 @@ class CI_Input {
unset($_COOKIE['$Path']);
unset($_COOKIE['$Domain']);
- foreach($_COOKIE as $key => $val)
+ foreach ($_COOKIE as $key => $val)
{
$_COOKIE[$this->_clean_input_keys($key)] = $this->_clean_input_data($val);
}
@@ -495,6 +523,9 @@ class CI_Input {
{
$str = $this->uni->clean_string($str);
}
+
+ // Remove control characters
+ $str = remove_invisible_characters($str);
// Should we filter the input data?
if ($this->_enable_xss === TRUE)
@@ -507,7 +538,7 @@ class CI_Input {
{
if (strpos($str, "\r") !== FALSE)
{
- $str = str_replace(array("\r\n", "\r"), PHP_EOL, $str);
+ $str = str_replace(array("\r\n", "\r", "\r\n\n"), PHP_EOL, $str);
}
}
@@ -610,8 +641,7 @@ class CI_Input {
if ($xss_clean === TRUE)
{
- $_security =& load_class('Security');
- return $_security->xss_clean($this->headers[$index]);
+ return $this->security->xss_clean($this->headers[$index]);
}
return $this->headers[$index];
@@ -649,4 +679,4 @@ class CI_Input {
// END Input class
/* End of file Input.php */
-/* Location: ./system/core/Input.php */ \ No newline at end of file
+/* Location: ./system/core/Input.php */
diff --git a/system/core/Lang.php b/system/core/Lang.php
index fb177902e..0b926a303 100755
--- a/system/core/Lang.php
+++ b/system/core/Lang.php
@@ -130,6 +130,13 @@ class CI_Lang {
function line($line = '')
{
$line = ($line == '' OR ! isset($this->language[$line])) ? FALSE : $this->language[$line];
+
+ // Because killer robots like unicorns!
+ if ($line === FALSE)
+ {
+ log_message('error', 'Could not find the language line "'.$line.'"');
+ }
+
return $line;
}
diff --git a/system/core/Loader.php b/system/core/Loader.php
index 07166188e..e75805d0e 100755
--- a/system/core/Loader.php
+++ b/system/core/Loader.php
@@ -79,9 +79,9 @@ class CI_Loader {
{
if (is_array($library))
{
- foreach($library as $read)
+ foreach ($library as $class)
{
- $this->library($read);
+ $this->library($class, $params);
}
return;
@@ -97,17 +97,7 @@ class CI_Loader {
$params = NULL;
}
- if (is_array($library))
- {
- foreach ($library as $class)
- {
- $this->_ci_load_class($class, $params, $object_name);
- }
- }
- else
- {
- $this->_ci_load_class($library, $params, $object_name);
- }
+ $this->_ci_load_class($library, $params, $object_name);
}
// --------------------------------------------------------------------
@@ -127,7 +117,7 @@ class CI_Loader {
{
if (is_array($model))
{
- foreach($model as $babe)
+ foreach ($model as $babe)
{
$this->model($babe);
}
@@ -880,8 +870,19 @@ class CI_Loader {
foreach ($config_component->_config_paths as $path)
{
// We test for both uppercase and lowercase, for servers that
- // are case-sensitive with regard to file names
- if (file_exists($path .'config/'.strtolower($class).EXT))
+ // are case-sensitive with regard to file names. Check for environment
+ // first, global next
+ if (defined('ENVIRONMENT') AND file_exists($path .'config/'.ENVIRONMENT.'/'.strtolower($class).EXT))
+ {
+ include_once($path .'config/'.ENVIRONMENT.'/'.strtolower($class).EXT);
+ break;
+ }
+ elseif (defined('ENVIRONMENT') AND file_exists($path .'config/'.ENVIRONMENT.'/'.ucfirst(strtolower($class)).EXT))
+ {
+ include_once($path .'config/'.ENVIRONMENT.'/'.ucfirst(strtolower($class)).EXT);
+ break;
+ }
+ elseif (file_exists($path .'config/'.strtolower($class).EXT))
{
include_once($path .'config/'.strtolower($class).EXT);
break;
@@ -964,7 +965,15 @@ class CI_Loader {
*/
function _ci_autoloader()
{
- include_once(APPPATH.'config/autoload'.EXT);
+ if (defined('ENVIRONMENT') AND file_exists(APPPATH.'config/'.ENVIRONMENT.'/autoload'.EXT))
+ {
+ include_once(APPPATH.'config/'.ENVIRONMENT.'/autoload'.EXT);
+ }
+ else
+ {
+ include_once(APPPATH.'config/autoload'.EXT);
+ }
+
if ( ! isset($autoload))
{
@@ -1092,4 +1101,4 @@ class CI_Loader {
}
/* End of file Loader.php */
-/* Location: ./system/core/Loader.php */ \ No newline at end of file
+/* Location: ./system/core/Loader.php */
diff --git a/system/core/Output.php b/system/core/Output.php
index 7fb9f7916..45a82f3cb 100755
--- a/system/core/Output.php
+++ b/system/core/Output.php
@@ -28,19 +28,32 @@
*/
class CI_Output {
- var $final_output;
- var $cache_expiration = 0;
- var $headers = array();
- var $enable_profiler = FALSE;
- var $parse_exec_vars = TRUE; // whether or not to parse variables like {elapsed_time} and {memory_usage}
-
- var $_zlib_oc = FALSE;
- var $_profiler_sections = array();
+ protected $final_output;
+ protected $cache_expiration = 0;
+ protected $headers = array();
+ protected $mime_types = array();
+ protected $enable_profiler = FALSE;
+ protected $_zlib_oc = FALSE;
+ protected $_profiler_sections = array();
+ protected $parse_exec_vars = TRUE; // whether or not to parse variables like {elapsed_time} and {memory_usage}
function __construct()
{
$this->_zlib_oc = @ini_get('zlib.output_compression');
+ // Get mime types for later
+ if (defined('ENVIRONMENT') AND file_exists(APPPATH.'config/'.ENVIRONMENT.'/mimes'.EXT))
+ {
+ include APPPATH.'config/'.ENVIRONMENT.'/mimes'.EXT;
+ }
+ else
+ {
+ include APPPATH.'config/mimes'.EXT;
+ }
+
+
+ $this->mime_types = $mimes;
+
log_message('debug', "Output Class Initialized");
}
@@ -73,6 +86,8 @@ class CI_Output {
function set_output($output)
{
$this->final_output = $output;
+
+ return $this;
}
// --------------------------------------------------------------------
@@ -96,6 +111,8 @@ class CI_Output {
{
$this->final_output .= $output;
}
+
+ return $this;
}
// --------------------------------------------------------------------
@@ -125,6 +142,42 @@ class CI_Output {
}
$this->headers[] = array($header, $replace);
+
+ return $this;
+ }
+
+ // --------------------------------------------------------------------
+
+ /**
+ * Set Content Type Header
+ *
+ * @access public
+ * @param string extension of the file we're outputting
+ * @return void
+ */
+ function set_content_type($mime_type)
+ {
+ if (strpos($mime_type, '/') === FALSE)
+ {
+ $extension = ltrim($mime_type, '.');
+
+ // Is this extension supported?
+ if (isset($this->mime_types[$extension]))
+ {
+ $mime_type =& $this->mime_types[$extension];
+
+ if (is_array($mime_type))
+ {
+ $mime_type = current($mime_type);
+ }
+ }
+ }
+
+ $header = 'Content-Type: '.$mime_type;
+
+ $this->headers[] = array($header, TRUE);
+
+ return $this;
}
// --------------------------------------------------------------------
@@ -141,6 +194,8 @@ class CI_Output {
function set_status_header($code = 200, $text = '')
{
set_status_header($code, $text);
+
+ return $this;
}
// --------------------------------------------------------------------
@@ -155,6 +210,8 @@ class CI_Output {
function enable_profiler($val = TRUE)
{
$this->enable_profiler = (is_bool($val)) ? $val : TRUE;
+
+ return $this;
}
// --------------------------------------------------------------------
@@ -174,6 +231,8 @@ class CI_Output {
{
$this->_profiler_sections[$section] = ($enable !== FALSE) ? TRUE : FALSE;
}
+
+ return $this;
}
// --------------------------------------------------------------------
@@ -188,6 +247,8 @@ class CI_Output {
function cache($time)
{
$this->cache_expiration = ( ! is_numeric($time)) ? 0 : $time;
+
+ return $this;
}
// --------------------------------------------------------------------
diff --git a/system/core/Router.php b/system/core/Router.php
index 7be508fef..d451aab68 100755
--- a/system/core/Router.php
+++ b/system/core/Router.php
@@ -87,7 +87,15 @@ class CI_Router {
}
// Load the routes.php file.
- @include(APPPATH.'config/routes'.EXT);
+ if (defined('ENVIRONMENT') AND is_file(APPPATH.'config/'.ENVIRONMENT.'/routes'.EXT))
+ {
+ include(APPPATH.'config/'.ENVIRONMENT.'/routes'.EXT);
+ }
+ elseif (is_file(APPPATH.'config/routes'.EXT))
+ {
+ include(APPPATH.'config/routes'.EXT);
+ }
+
$this->routes = ( ! isset($route) OR ! is_array($route)) ? array() : $route;
unset($route);
@@ -270,7 +278,7 @@ class CI_Router {
// If we've gotten this far it means that the URI does not correlate to a valid
// controller class. We will now see if there is an override
- if (!empty($this->routes['404_override']))
+ if ( ! empty($this->routes['404_override']))
{
$x = explode('/', $this->routes['404_override']);
diff --git a/system/core/Security.php b/system/core/Security.php
new file mode 100755
index 000000000..ceef9779c
--- /dev/null
+++ b/system/core/Security.php
@@ -0,0 +1,820 @@
+<?php if ( ! defined('BASEPATH')) exit('No direct script access allowed');
+/**
+ * CodeIgniter
+ *
+ * An open source application development framework for PHP 5.1.6 or newer
+ *
+ * @package CodeIgniter
+ * @author ExpressionEngine Dev Team
+ * @copyright Copyright (c) 2008 - 2011, EllisLab, Inc.
+ * @license http://codeigniter.com/user_guide/license.html
+ * @link http://codeigniter.com
+ * @since Version 1.0
+ * @filesource
+ */
+
+// ------------------------------------------------------------------------
+
+/**
+ * Security Class
+ *
+ * @package CodeIgniter
+ * @subpackage Libraries
+ * @category Security
+ * @author ExpressionEngine Dev Team
+ * @link http://codeigniter.com/user_guide/libraries/security.html
+ */
+class CI_Security {
+
+ protected $_xss_hash = '';
+ protected $_csrf_hash = '';
+ protected $_csrf_expire = 7200; // Two hours (in seconds)
+ protected $_csrf_token_name = 'ci_csrf_token';
+ protected $_csrf_cookie_name = 'ci_csrf_token';
+
+ /* never allowed, string replacement */
+ protected $_never_allowed_str = array(
+ 'document.cookie' => '[removed]',
+ 'document.write' => '[removed]',
+ '.parentNode' => '[removed]',
+ '.innerHTML' => '[removed]',
+ 'window.location' => '[removed]',
+ '-moz-binding' => '[removed]',
+ '<!--' => '&lt;!--',
+ '-->' => '--&gt;',
+ '<![CDATA[' => '&lt;![CDATA['
+ );
+
+ /* never allowed, regex replacement */
+ protected $_never_allowed_regex = array(
+ "javascript\s*:" => '[removed]',
+ "expression\s*(\(|&\#40;)" => '[removed]', // CSS and IE
+ "vbscript\s*:" => '[removed]', // IE, surprise!
+ "Redirect\s+302" => '[removed]'
+ );
+
+ /**
+ * Constructor
+ */
+ public function __construct()
+ {
+ // Append application specific cookie prefix to token name
+ $this->_csrf_cookie_name = (config_item('cookie_prefix')) ? config_item('cookie_prefix').$this->_csrf_token_name : $this->_csrf_token_name;
+
+ // Set the CSRF hash
+ $this->_csrf_set_hash();
+
+ log_message('debug', "Security Class Initialized");
+ }
+
+ // --------------------------------------------------------------------
+
+ /**
+ * Verify Cross Site Request Forgery Protection
+ *
+ * @return object
+ */
+ public function csrf_verify()
+ {
+ // If no POST data exists we will set the CSRF cookie
+ if (count($_POST) == 0)
+ {
+ return $this->csrf_set_cookie();
+ }
+
+ // Do the tokens exist in both the _POST and _COOKIE arrays?
+ if ( ! isset($_POST[$this->_csrf_token_name]) OR
+ ! isset($_COOKIE[$this->_csrf_cookie_name]))
+ {
+ $this->csrf_show_error();
+ }
+
+ // Do the tokens match?
+ if ($_POST[$this->_csrf_token_name] != $_COOKIE[$this->_csrf_cookie_name])
+ {
+ $this->csrf_show_error();
+ }
+
+ // We kill this since we're done and we don't want to
+ // polute the _POST array
+ unset($_POST[$this->_csrf_token_name]);
+
+ // Nothing should last forever
+ unset($_COOKIE[$this->_csrf_cookie_name]);
+ $this->_csrf_set_hash();
+ $this->csrf_set_cookie();
+
+ log_message('debug', "CSRF token verified ");
+
+ return $this;
+ }
+
+ // --------------------------------------------------------------------
+
+ /**
+ * Set Cross Site Request Forgery Protection Cookie
+ *
+ * @return object
+ */
+ public function csrf_set_cookie()
+ {
+ $expire = time() + $this->_csrf_expire;
+ $secure_cookie = (config_item('cookie_secure') === TRUE) ? 1 : 0;
+
+ if ($secure_cookie)
+ {
+ $req = isset($_SERVER['HTTPS']) ? $_SERVER['HTTPS'] : FALSE;
+
+ if ( ! $req OR $req == 'off')
+ {
+ return FALSE;
+ }
+ }
+
+ setcookie($this->_csrf_cookie_name, $this->_csrf_hash, $expire, config_item('cookie_path'), config_item('cookie_domain'), $secure_cookie);
+
+ log_message('debug', "CRSF cookie Set");
+
+ return $this;
+ }
+
+ // --------------------------------------------------------------------
+
+ /**
+ * Show CSRF Error
+ *
+ * @return void
+ */
+ public function csrf_show_error()
+ {
+ show_error('The action you have requested is not allowed.');
+ }
+
+ // --------------------------------------------------------------------
+
+ /**
+ * Get CSRF Hash
+ *
+ * Getter Method
+ *
+ * @return string self::_csrf_hash
+ */
+ public function get_csrf_hash()
+ {
+ return $this->_csrf_hash;
+ }
+
+ // --------------------------------------------------------------------
+
+ /**
+ * Get CSRF Token Name
+ *
+ * Getter Method
+ *
+ * @return string self::csrf_token_name
+ */
+ public function get_csrf_token_name()
+ {
+ return $this->_csrf_token_name;
+ }
+
+ // --------------------------------------------------------------------
+
+ /**
+ * XSS Clean
+ *
+ * Sanitizes data so that Cross Site Scripting Hacks can be
+ * prevented. This function does a fair amount of work but
+ * it is extremely thorough, designed to prevent even the
+ * most obscure XSS attempts. Nothing is ever 100% foolproof,
+ * of course, but I haven't been able to get anything passed
+ * the filter.
+ *
+ * Note: This function should only be used to deal with data
+ * upon submission. It's not something that should
+ * be used for general runtime processing.
+ *
+ * This function was based in part on some code and ideas I
+ * got from Bitflux: http://channel.bitflux.ch/wiki/XSS_Prevention
+ *
+ * To help develop this script I used this great list of
+ * vulnerabilities along with a few other hacks I've
+ * harvested from examining vulnerabilities in other programs:
+ * http://ha.ckers.org/xss.html
+ *
+ * @param mixed string or array
+ * @return string
+ */
+ public function xss_clean($str, $is_image = FALSE)
+ {
+ /*
+ * Is the string an array?
+ *
+ */
+ if (is_array($str))
+ {
+ while (list($key) = each($str))
+ {
+ $str[$key] = $this->xss_clean($str[$key]);
+ }
+
+ return $str;
+ }
+
+ /*
+ * Remove Invisible Characters
+ */
+ $str = remove_invisible_characters($str);
+
+ // Validate Entities in URLs
+ $str = $this->_validate_entities($str);
+
+ /*
+ * URL Decode
+ *
+ * Just in case stuff like this is submitted:
+ *
+ * <a href="http://%77%77%77%2E%67%6F%6F%67%6C%65%2E%63%6F%6D">Google</a>
+ *
+ * Note: Use rawurldecode() so it does not remove plus signs
+ *
+ */
+ $str = rawurldecode($str);
+
+ /*
+ * Convert character entities to ASCII
+ *
+ * This permits our tests below to work reliably.
+ * We only convert entities that are within tags since
+ * these are the ones that will pose security problems.
+ *
+ */
+
+ $str = preg_replace_callback("/[a-z]+=([\'\"]).*?\\1/si", array($this, '_convert_attribute'), $str);
+
+ $str = preg_replace_callback("/<\w+.*?(?=>|<|$)/si", array($this, '_decode_entity'), $str);
+
+ /*
+ * Remove Invisible Characters Again!
+ */
+ $str = remove_invisible_characters($str);
+
+ /*
+ * Convert all tabs to spaces
+ *
+ * This prevents strings like this: ja vascript
+ * NOTE: we deal with spaces between characters later.
+ * NOTE: preg_replace was found to be amazingly slow here on
+ * large blocks of data, so we use str_replace.
+ */
+
+ if (strpos($str, "\t") !== FALSE)
+ {
+ $str = str_replace("\t", ' ', $str);
+ }
+
+ /*
+ * Capture converted string for later comparison
+ */
+ $converted_string = $str;
+
+ // Remove Strings that are never allowed
+ $str = $this->_do_never_allowed($str);
+
+ /*
+ * Makes PHP tags safe
+ *
+ * Note: XML tags are inadvertently replaced too:
+ *
+ * <?xml
+ *
+ * But it doesn't seem to pose a problem.
+ */
+ if ($is_image === TRUE)
+ {
+ // Images have a tendency to have the PHP short opening and
+ // closing tags every so often so we skip those and only
+ // do the long opening tags.
+ $str = preg_replace('/<\?(php)/i', "&lt;?\\1", $str);
+ }
+ else
+ {
+ $str = str_replace(array('<?', '?'.'>'), array('&lt;?', '?&gt;'), $str);
+ }
+
+ /*
+ * Compact any exploded words
+ *
+ * This corrects words like: j a v a s c r i p t
+ * These words are compacted back to their correct state.
+ */
+ $words = array(
+ 'javascript', 'expression', 'vbscript', 'script',
+ 'applet', 'alert', 'document', 'write', 'cookie', 'window'
+ );
+
+ foreach ($words as $word)
+ {
+ $temp = '';
+
+ for ($i = 0, $wordlen = strlen($word); $i < $wordlen; $i++)
+ {
+ $temp .= substr($word, $i, 1)."\s*";
+ }
+
+ // We only want to do this when it is followed by a non-word character
+ // That way valid stuff like "dealer to" does not become "dealerto"
+ $str = preg_replace_callback('#('.substr($temp, 0, -3).')(\W)#is', array($this, '_compact_exploded_words'), $str);
+ }
+
+ /*
+ * Remove disallowed Javascript in links or img tags
+ * We used to do some version comparisons and use of stripos for PHP5,
+ * but it is dog slow compared to these simplified non-capturing
+ * preg_match(), especially if the pattern exists in the string
+ */
+ do
+ {
+ $original = $str;
+
+ if (preg_match("/<a/i", $str))
+ {
+ $str = preg_replace_callback("#<a\s+([^>]*?)(>|$)#si", array($this, '_js_link_removal'), $str);
+ }
+
+ if (preg_match("/<img/i", $str))
+ {
+ $str = preg_replace_callback("#<img\s+([^>]*?)(\s?/?>|$)#si", array($this, '_js_img_removal'), $str);
+ }
+
+ if (preg_match("/script/i", $str) OR preg_match("/xss/i", $str))
+ {
+ $str = preg_replace("#<(/*)(script|xss)(.*?)\>#si", '[removed]', $str);
+ }
+ }
+ while($original != $str);
+
+ unset($original);
+
+ // Remove evil attributes such as style, onclick and xmlns
+ $str = $this->_remove_evil_attributes($str, $is_image);
+
+ /*
+ * Sanitize naughty HTML elements
+ *
+ * If a tag containing any of the words in the list
+ * below is found, the tag gets converted to entities.
+ *
+ * So this: <blink>
+ * Becomes: &lt;blink&gt;
+ */
+ $naughty = 'alert|applet|audio|basefont|base|behavior|bgsound|blink|body|embed|expression|form|frameset|frame|head|html|ilayer|iframe|input|isindex|layer|link|meta|object|plaintext|style|script|textarea|title|video|xml|xss';
+ $str = preg_replace_callback('#<(/*\s*)('.$naughty.')([^><]*)([><]*)#is', array($this, '_sanitize_naughty_html'), $str);
+
+ /*
+ * Sanitize naughty scripting elements
+ *
+ * Similar to above, only instead of looking for
+ * tags it looks for PHP and JavaScript commands
+ * that are disallowed. Rather than removing the
+ * code, it simply converts the parenthesis to entities
+ * rendering the code un-executable.
+ *
+ * For example: eval('some code')
+ * Becomes: eval&#40;'some code'&#41;
+ */
+ $str = preg_replace('#(alert|cmd|passthru|eval|exec|expression|system|fopen|fsockopen|file|file_get_contents|readfile|unlink)(\s*)\((.*?)\)#si', "\\1\\2&#40;\\3&#41;", $str);
+
+
+ // Final clean up
+ // This adds a bit of extra precaution in case
+ // something got through the above filters
+ $str = $this->_do_never_allowed($str);
+
+ /*
+ * Images are Handled in a Special Way
+ * - Essentially, we want to know that after all of the character
+ * conversion is done whether any unwanted, likely XSS, code was found.
+ * If not, we return TRUE, as the image is clean.
+ * However, if the string post-conversion does not matched the
+ * string post-removal of XSS, then it fails, as there was unwanted XSS
+ * code found and removed/changed during processing.
+ */
+
+ if ($is_image === TRUE)
+ {
+ return ($str == $converted_string) ? TRUE: FALSE;
+ }
+
+ log_message('debug', "XSS Filtering completed");
+ return $str;
+ }
+
+ // --------------------------------------------------------------------
+
+ /**
+ * Random Hash for protecting URLs
+ *
+ * @return string
+ */
+ public function xss_hash()
+ {
+ if ($this->_xss_hash == '')
+ {
+ if (phpversion() >= 4.2)
+ {
+ mt_srand();
+ }
+ else
+ {
+ mt_srand(hexdec(substr(md5(microtime()), -8)) & 0x7fffffff);
+ }
+
+ $this->_xss_hash = md5(time() + mt_rand(0, 1999999999));
+ }
+
+ return $this->_xss_hash;
+ }
+
+ // --------------------------------------------------------------------
+
+ /**
+ * HTML Entities Decode
+ *
+ * This function is a replacement for html_entity_decode()
+ *
+ * In some versions of PHP the native function does not work
+ * when UTF-8 is the specified character set, so this gives us
+ * a work-around. More info here:
+ * http://bugs.php.net/bug.php?id=25670
+ *
+ * NOTE: html_entity_decode() has a bug in some PHP versions when UTF-8 is the
+ * character set, and the PHP developers said they were not back porting the
+ * fix to versions other than PHP 5.x.
+ *
+ * @param string
+ * @param string
+ * @return string
+ */
+ public function entity_decode($str, $charset='UTF-8')
+ {
+ if (stristr($str, '&') === FALSE) return $str;
+
+ // The reason we are not using html_entity_decode() by itself is because
+ // while it is not technically correct to leave out the semicolon
+ // at the end of an entity most browsers will still interpret the entity
+ // correctly. html_entity_decode() does not convert entities without
+ // semicolons, so we are left with our own little solution here. Bummer.
+
+ if (function_exists('html_entity_decode') &&
+ (strtolower($charset) != 'utf-8'))
+ {
+ $str = html_entity_decode($str, ENT_COMPAT, $charset);
+ $str = preg_replace('~&#x(0*[0-9a-f]{2,5})~ei', 'chr(hexdec("\\1"))', $str);
+ return preg_replace('~&#([0-9]{2,4})~e', 'chr(\\1)', $str);
+ }
+
+ // Numeric Entities
+ $str = preg_replace('~&#x(0*[0-9a-f]{2,5});{0,1}~ei', 'chr(hexdec("\\1"))', $str);
+ $str = preg_replace('~&#([0-9]{2,4});{0,1}~e', 'chr(\\1)', $str);
+
+ // Literal Entities - Slightly slow so we do another check
+ if (stristr($str, '&') === FALSE)
+ {
+ $str = strtr($str, array_flip(get_html_translation_table(HTML_ENTITIES)));
+ }
+
+ return $str;
+ }
+
+ // --------------------------------------------------------------------
+
+ /**
+ * Filename Security
+ *
+ * @param string
+ * @return string
+ */
+ public function sanitize_filename($str, $relative_path = FALSE)
+ {
+ $bad = array(
+ "../",
+ "<!--",
+ "-->",
+ "<",
+ ">",
+ "'",
+ '"',
+ '&',
+ '$',
+ '#',
+ '{',
+ '}',
+ '[',
+ ']',
+ '=',
+ ';',
+ '?',
+ "%20",
+ "%22",
+ "%3c", // <
+ "%253c", // <
+ "%3e", // >
+ "%0e", // >
+ "%28", // (
+ "%29", // )
+ "%2528", // (
+ "%26", // &
+ "%24", // $
+ "%3f", // ?
+ "%3b", // ;
+ "%3d" // =
+ );
+
+ if ( ! $relative_path)
+ {
+ $bad[] = './';
+ $bad[] = '/';
+ }
+
+ $str = remove_invisible_characters($str, FALSE);
+ return stripslashes(str_replace($bad, '', $str));
+ }
+
+ // ----------------------------------------------------------------
+
+ /**
+ * Compact Exploded Words
+ *
+ * Callback function for xss_clean() to remove whitespace from
+ * things like j a v a s c r i p t
+ *
+ * @param type
+ * @return type
+ */
+ protected function _compact_exploded_words($matches)
+ {
+ return preg_replace('/\s+/s', '', $matches[1]).$matches[2];
+ }
+
+ // --------------------------------------------------------------------
+
+ /*
+ * Remove Evil HTML Attributes (like evenhandlers and style)
+ *
+ * It removes the evil attribute and either:
+ * - Everything up until a space
+ * For example, everything between the pipes:
+ * <a |style=document.write('hello');alert('world');| class=link>
+ * - Everything inside the quotes
+ * For example, everything between the pipes:
+ * <a |style="document.write('hello'); alert('world');"| class="link">
+ *
+ * @param string $str The string to check
+ * @param boolean $is_image TRUE if this is an image
+ * @return string The string with the evil attributes removed
+ */
+ protected function _remove_evil_attributes($str, $is_image)
+ {
+ // All javascript event handlers (e.g. onload, onclick, onmouseover), style, and xmlns
+ $evil_attributes = array('on\w*', 'style', 'xmlns');
+
+ if ($is_image === TRUE)
+ {
+ /*
+ * Adobe Photoshop puts XML metadata into JFIF images,
+ * including namespacing, so we have to allow this for images.
+ */
+ unset($evil_attributes[array_search('xmlns', $evil_attributes)]);
+ }
+
+ do {
+ $str = preg_replace(
+ "#<(/?[^><]+?)([^A-Za-z\-])(".implode('|', $evil_attributes).")(\s*=\s*)([\"][^>]*?[\"]|[\'][^>]*?[\']|[^>]*?)([\s><])([><]*)#i",
+ "<$1$6",
+ $str, -1, $count
+ );
+ } while ($count);
+
+ return $str;
+ }
+
+ // --------------------------------------------------------------------
+
+ /**
+ * Sanitize Naughty HTML
+ *
+ * Callback function for xss_clean() to remove naughty HTML elements
+ *
+ * @param array
+ * @return string
+ */
+ protected function _sanitize_naughty_html($matches)
+ {
+ // encode opening brace
+ $str = '&lt;'.$matches[1].$matches[2].$matches[3];
+
+ // encode captured opening or closing brace to prevent recursive vectors
+ $str .= str_replace(array('>', '<'), array('&gt;', '&lt;'),
+ $matches[4]);
+
+ return $str;
+ }
+
+ // --------------------------------------------------------------------
+
+ /**
+ * JS Link Removal
+ *
+ * Callback function for xss_clean() to sanitize links
+ * This limits the PCRE backtracks, making it more performance friendly
+ * and prevents PREG_BACKTRACK_LIMIT_ERROR from being triggered in
+ * PHP 5.2+ on link-heavy strings
+ *
+ * @param array
+ * @return string
+ */
+ protected function _js_link_removal($match)
+ {
+ $attributes = $this->_filter_attributes(str_replace(array('<', '>'), '', $match[1]));
+
+ return str_replace($match[1], preg_replace("#href=.*?(alert\(|alert&\#40;|javascript\:|livescript\:|mocha\:|charset\=|window\.|document\.|\.cookie|<script|<xss|base64\s*,)#si", "", $attributes), $match[0]);
+ }
+
+ // --------------------------------------------------------------------
+
+ /**
+ * JS Image Removal
+ *
+ * Callback function for xss_clean() to sanitize image tags
+ * This limits the PCRE backtracks, making it more performance friendly
+ * and prevents PREG_BACKTRACK_LIMIT_ERROR from being triggered in
+ * PHP 5.2+ on image tag heavy strings
+ *
+ * @param array
+ * @return string
+ */
+ protected function _js_img_removal($match)
+ {
+ $attributes = $this->_filter_attributes(str_replace(array('<', '>'), '', $match[1]));
+
+ return str_replace($match[1], preg_replace("#src=.*?(alert\(|alert&\#40;|javascript\:|livescript\:|mocha\:|charset\=|window\.|document\.|\.cookie|<script|<xss|base64\s*,)#si", "", $attributes), $match[0]);
+ }
+
+ // --------------------------------------------------------------------
+
+ /**
+ * Attribute Conversion
+ *
+ * Used as a callback for XSS Clean
+ *
+ * @param array
+ * @return string
+ */
+ protected function _convert_attribute($match)
+ {
+ return str_replace(array('>', '<', '\\'), array('&gt;', '&lt;', '\\\\'), $match[0]);
+ }
+
+ // --------------------------------------------------------------------
+
+ /**
+ * Filter Attributes
+ *
+ * Filters tag attributes for consistency and safety
+ *
+ * @param string
+ * @return string
+ */
+ protected function _filter_attributes($str)
+ {
+ $out = '';
+
+ if (preg_match_all('#\s*[a-z\-]+\s*=\s*(\042|\047)([^\\1]*?)\\1#is', $str, $matches))
+ {
+ foreach ($matches[0] as $match)
+ {
+ $out .= preg_replace("#/\*.*?\*/#s", '', $match);
+ }
+ }
+
+ return $out;
+ }
+
+ // --------------------------------------------------------------------
+
+ /**
+ * HTML Entity Decode Callback
+ *
+ * Used as a callback for XSS Clean
+ *
+ * @param array
+ * @return string
+ */
+ protected function _decode_entity($match)
+ {
+ return $this->entity_decode($match[0], strtoupper(config_item('charset')));
+ }
+
+ // --------------------------------------------------------------------
+
+ /**
+ * Validate URL entities
+ *
+ * Called by xss_clean()
+ *
+ * @param string
+ * @return string
+ */
+ protected function _validate_entities($str)
+ {
+ /*
+ * Protect GET variables in URLs
+ */
+
+ // 901119URL5918AMP18930PROTECT8198
+
+ $str = preg_replace('|\&([a-z\_0-9\-]+)\=([a-z\_0-9\-]+)|i', $this->xss_hash()."\\1=\\2", $str);
+
+ /*
+ * Validate standard character entities
+ *
+ * Add a semicolon if missing. We do this to enable
+ * the conversion of entities to ASCII later.
+ *
+ */
+ $str = preg_replace('#(&\#?[0-9a-z]{2,})([\x00-\x20])*;?#i', "\\1;\\2", $str);
+
+ /*
+ * Validate UTF16 two byte encoding (x00)
+ *
+ * Just as above, adds a semicolon if missing.
+ *
+ */
+ $str = preg_replace('#(&\#x?)([0-9A-F]+);?#i',"\\1\\2;",$str);
+
+ /*
+ * Un-Protect GET variables in URLs
+ */
+ $str = str_replace($this->xss_hash(), '&', $str);
+
+ return $str;
+ }
+
+ // ----------------------------------------------------------------------
+
+ /**
+ * Do Never Allowed
+ *
+ * A utility function for xss_clean()
+ *
+ * @param string
+ * @return string
+ */
+ protected function _do_never_allowed($str)
+ {
+ foreach ($this->_never_allowed_str as $key => $val)
+ {
+ $str = str_replace($key, $val, $str);
+ }
+
+ foreach ($this->_never_allowed_regex as $key => $val)
+ {
+ $str = preg_replace("#".$key."#i", $val, $str);
+ }
+
+ return $str;
+ }
+
+ // --------------------------------------------------------------------
+
+ /**
+ * Set Cross Site Request Forgery Protection Cookie
+ *
+ * @return string
+ */
+ protected function _csrf_set_hash()
+ {
+ if ($this->_csrf_hash == '')
+ {
+ // If the cookie exists we will use it's value.
+ // We don't necessarily want to regenerate it with
+ // each page load since a page could contain embedded
+ // sub-pages causing this feature to fail
+ if (isset($_COOKIE[$this->_csrf_cookie_name]) &&
+ $_COOKIE[$this->_csrf_cookie_name] != '')
+ {
+ return $this->_csrf_hash = $_COOKIE[$this->_csrf_cookie_name];
+ }
+
+ return $this->_csrf_hash = md5(uniqid(rand(), TRUE));
+ }
+
+ return $this->_csrf_hash;
+ }
+
+}
+// END Security Class
+
+/* End of file Security.php */
+/* Location: ./system/libraries/Security.php */ \ No newline at end of file
diff --git a/system/core/URI.php b/system/core/URI.php
index 88f237bcf..80dc62e58 100755
--- a/system/core/URI.php
+++ b/system/core/URI.php
@@ -61,17 +61,17 @@ class CI_URI {
{
if (strtoupper($this->config->item('uri_protocol')) == 'AUTO')
{
- // Arguments exist, it must be a command line request
- if ( ! empty($_SERVER['argv']))
+ // Is the request coming from the command line?
+ if (defined('STDIN'))
{
- $this->uri_string = $this->_parse_cli_args();
+ $this->_set_uri_string($this->_parse_cli_args());
return;
}
// Let's try the REQUEST_URI first, this will work in most situations
if ($uri = $this->_detect_uri())
{
- $this->uri_string = $uri;
+ $this->_set_uri_string($uri);
return;
}
@@ -80,7 +80,7 @@ class CI_URI {
$path = (isset($_SERVER['PATH_INFO'])) ? $_SERVER['PATH_INFO'] : @getenv('PATH_INFO');
if (trim($path, '/') != '' && $path != "/".SELF)
{
- $this->uri_string = $path;
+ $this->_set_uri_string($path);
return;
}
@@ -88,43 +88,54 @@ class CI_URI {
$path = (isset($_SERVER['QUERY_STRING'])) ? $_SERVER['QUERY_STRING'] : @getenv('QUERY_STRING');
if (trim($path, '/') != '')
{
- $this->uri_string = $path;
+ $this->_set_uri_string($path);
return;
}
// As a last ditch effort lets try using the $_GET array
if (is_array($_GET) && count($_GET) == 1 && trim(key($_GET), '/') != '')
{
- $this->uri_string = key($_GET);
+ $this->_set_uri_string(key($_GET));
return;
}
// We've exhausted all our options...
$this->uri_string = '';
+ return;
}
- else
- {
- $uri = strtoupper($this->config->item('uri_protocol'));
- if ($uri == 'REQUEST_URI')
- {
- $this->uri_string = $this->_detect_uri();
- return;
- }
- elseif ($uri == 'CLI')
- {
- $this->uri_string = $this->_parse_cli_args();
- return;
- }
+ $uri = strtoupper($this->config->item('uri_protocol'));
- $this->uri_string = (isset($_SERVER[$uri])) ? $_SERVER[$uri] : @getenv($uri);
+ if ($uri == 'REQUEST_URI')
+ {
+ $this->_set_uri_string($this->_detect_uri());
+ return;
}
-
- // If the URI contains only a slash we'll kill it
- if ($this->uri_string == '/')
+ elseif ($uri == 'CLI')
{
- $this->uri_string = '';
+ $this->_set_uri_string($this->_parse_cli_args());
+ return;
}
+
+ $path = (isset($_SERVER[$uri])) ? $_SERVER[$uri] : @getenv($uri);
+ $this->_set_uri_string($path);
+ }
+
+ // --------------------------------------------------------------------
+
+ /**
+ * Set the URI String
+ *
+ * @access public
+ * @return string
+ */
+ function _set_uri_string($str)
+ {
+ // Filter out control characters
+ $str = remove_invisible_characters($str, FALSE);
+
+ // If the URI contains only a slash we'll kill it
+ $this->uri_string = ($str == '/') ? '' : $str;
}
// --------------------------------------------------------------------
@@ -173,10 +184,16 @@ class CI_URI {
$_SERVER['QUERY_STRING'] = '';
$_GET = array();
}
+
+ if ($uri == '/' || empty($uri))
+ {
+ return '/';
+ }
+
$uri = parse_url($uri, PHP_URL_PATH);
// Do some final cleaning of the URI and return it
- return str_replace(array('//', '../'), '/', ltrim($uri, '/'));
+ return str_replace(array('//', '../'), '/', trim($uri, '/'));
}
// --------------------------------------------------------------------
diff --git a/system/core/Utf8.php b/system/core/Utf8.php
index 5d5a7ef72..2a27d1f35 100755
--- a/system/core/Utf8.php
+++ b/system/core/Utf8.php
@@ -107,7 +107,7 @@ class CI_Utf8 {
*/
function safe_ascii_for_xml($str)
{
- return preg_replace('/[\x00-\x08\x0B\x0C\x0E-\x1F\x7F]+/S', '', $str);
+ return remove_invisible_characters($str, FALSE);
}
// --------------------------------------------------------------------