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authorAndrey Andreev <narf@bofh.bg>2012-01-08 04:19:53 +0100
committerAndrey Andreev <narf@bofh.bg>2012-01-08 04:19:53 +0100
commitbf70d6245046d743573c604aeda3280870e19e41 (patch)
tree63e5dd015b2121bc547ed2ecadbb80dfda3cfb3d /system/core/Input.php
parentbb488dc3d4bbac9ac9a1860f066069e4bb4afdcb (diff)
parent352d60e9f3a65def29e02a4507ef742eac255333 (diff)
Merge remote-tracking branch 'upstream/develop' into develop-core-security
Diffstat (limited to 'system/core/Input.php')
-rwxr-xr-xsystem/core/Input.php111
1 files changed, 39 insertions, 72 deletions
diff --git a/system/core/Input.php b/system/core/Input.php
index 7cfa4c63f..7a16e51ab 100755
--- a/system/core/Input.php
+++ b/system/core/Input.php
@@ -1,13 +1,13 @@
-<?php if ( ! defined('BASEPATH')) exit('No direct script access allowed');
+<?php if ( ! defined('BASEPATH')) exit('No direct script access allowed');
/**
* CodeIgniter
*
* An open source application development framework for PHP 5.1.6 or newer
*
* NOTICE OF LICENSE
- *
+ *
* Licensed under the Open Software License version 3.0
- *
+ *
* This source file is subject to the Open Software License (OSL 3.0) that is
* bundled with this package in the files license.txt / license.rst. It is
* also available through the world wide web at this URL:
@@ -45,39 +45,39 @@ class CI_Input {
*
* @var string
*/
- var $ip_address = FALSE;
+ public $ip_address = FALSE;
/**
* user agent (web browser) being used by the current user
*
* @var string
*/
- var $user_agent = FALSE;
+ public $user_agent = FALSE;
/**
* If FALSE, then $_GET will be set to an empty array
*
* @var bool
*/
- var $_allow_get_array = TRUE;
+ protected $_allow_get_array = TRUE;
/**
* If TRUE, then newlines are standardized
*
* @var bool
*/
- var $_standardize_newlines = TRUE;
+ protected $_standardize_newlines = TRUE;
/**
* Determines whether the XSS filter is always active when GET, POST or COOKIE data is encountered
* Set automatically based on config setting
*
* @var bool
*/
- var $_enable_xss = FALSE;
+ protected $_enable_xss = FALSE;
/**
* Enables a CSRF cookie token to be set.
* Set automatically based on config setting
*
* @var bool
*/
- var $_enable_csrf = FALSE;
+ protected $_enable_csrf = FALSE;
/**
* List of all HTTP request headers
*
@@ -85,21 +85,19 @@ class CI_Input {
*/
protected $headers = array();
-
/**
* Constructor
*
* Sets whether to globally enable the XSS processing
* and whether to allow the $_GET array
- *
*/
public function __construct()
{
- log_message('debug', "Input Class Initialized");
+ log_message('debug', 'Input Class Initialized');
$this->_allow_get_array = (config_item('allow_get_array') === TRUE);
- $this->_enable_xss = (config_item('global_xss_filtering') === TRUE);
- $this->_enable_csrf = (config_item('csrf_protection') === TRUE);
+ $this->_enable_xss = (config_item('global_xss_filtering') === TRUE);
+ $this->_enable_csrf = (config_item('csrf_protection') === TRUE);
global $SEC;
$this->security =& $SEC;
@@ -122,7 +120,6 @@ class CI_Input {
*
* This is a helper function to retrieve values from global arrays
*
- * @access protected
* @param array
* @param string
* @param bool
@@ -148,7 +145,6 @@ class CI_Input {
/**
* Fetch an item from the GET array
*
- * @access public
* @param string
* @param bool
* @return string
@@ -176,7 +172,6 @@ class CI_Input {
/**
* Fetch an item from the POST array
*
- * @access public
* @param string
* @param bool
* @return string
@@ -205,21 +200,15 @@ class CI_Input {
/**
* Fetch an item from either the GET array or the POST
*
- * @access public
* @param string The index key
* @param bool XSS cleaning
* @return string
*/
public function get_post($index = '', $xss_clean = FALSE)
{
- if ( ! isset($_POST[$index]) )
- {
- return $this->get($index, $xss_clean);
- }
- else
- {
- return $this->post($index, $xss_clean);
- }
+ return ( ! isset($_POST[$index]))
+ ? $this->get($index, $xss_clean)
+ : $this->post($index, $xss_clean);
}
// --------------------------------------------------------------------
@@ -227,7 +216,6 @@ class CI_Input {
/**
* Fetch an item from the COOKIE array
*
- * @access public
* @param string
* @param bool
* @return string
@@ -245,7 +233,6 @@ class CI_Input {
* Accepts six parameter, or you can submit an associative
* array in the first parameter containing all the values.
*
- * @access public
* @param mixed
* @param string the value of the cookie
* @param string the number of seconds until expiration
@@ -303,7 +290,6 @@ class CI_Input {
/**
* Fetch an item from the SERVER array
*
- * @access public
* @param string
* @param bool
* @return string
@@ -318,7 +304,6 @@ class CI_Input {
/**
* Fetch the IP Address
*
- * @access public
* @return string
*/
public function ip_address()
@@ -335,7 +320,7 @@ class CI_Input {
$this->ip_address = in_array($_SERVER['REMOTE_ADDR'], $proxies) ? $_SERVER['HTTP_X_FORWARDED_FOR'] : $_SERVER['REMOTE_ADDR'];
}
- elseif (! $this->server('HTTP_CLIENT_IP') AND $this->server('REMOTE_ADDR'))
+ elseif ( ! $this->server('HTTP_CLIENT_IP') AND $this->server('REMOTE_ADDR'))
{
$this->ip_address = $_SERVER['REMOTE_ADDR'];
}
@@ -354,8 +339,7 @@ class CI_Input {
if ($this->ip_address === FALSE)
{
- $this->ip_address = '0.0.0.0';
- return $this->ip_address;
+ return $this->ip_address = '0.0.0.0';
}
if (strpos($this->ip_address, ',') !== FALSE)
@@ -366,7 +350,7 @@ class CI_Input {
if ( ! $this->valid_ip($this->ip_address))
{
- $this->ip_address = '0.0.0.0';
+ return $this->ip_address = '0.0.0.0';
}
return $this->ip_address;
@@ -379,7 +363,6 @@ class CI_Input {
*
* Updated version suggested by Geert De Deckere
*
- * @access public
* @param string
* @return bool
*/
@@ -394,7 +377,7 @@ class CI_Input {
$ip_segments = explode('.', $ip);
// Always 4 segments needed
- if (count($ip_segments) != 4)
+ if (count($ip_segments) !== 4)
{
return FALSE;
}
@@ -408,7 +391,7 @@ class CI_Input {
{
// IP segments must be digits and can not be
// longer than 3 digits or greater then 255
- if ($segment == '' OR preg_match("/[^0-9]/", $segment) OR $segment > 255 OR strlen($segment) > 3)
+ if ($segment == '' OR preg_match('/[^0-9]/', $segment) OR $segment > 255 OR strlen($segment) > 3)
{
return FALSE;
}
@@ -422,7 +405,6 @@ class CI_Input {
/**
* User Agent
*
- * @access public
* @return string
*/
public function user_agent()
@@ -432,9 +414,7 @@ class CI_Input {
return $this->user_agent;
}
- $this->user_agent = ( ! isset($_SERVER['HTTP_USER_AGENT'])) ? FALSE : $_SERVER['HTTP_USER_AGENT'];
-
- return $this->user_agent;
+ return $this->user_agent = ( ! isset($_SERVER['HTTP_USER_AGENT'])) ? FALSE : $_SERVER['HTTP_USER_AGENT'];
}
// --------------------------------------------------------------------
@@ -444,22 +424,20 @@ class CI_Input {
*
* This function does the following:
*
- * Unsets $_GET data (if query strings are not enabled)
- *
- * Unsets all globals if register_globals is enabled
+ * - Unsets $_GET data (if query strings are not enabled)
+ * - Unsets all globals if register_globals is enabled
+ * - Standardizes newline characters to \n
*
- * Standardizes newline characters to \n
- *
- * @access private
* @return void
*/
- private function _sanitize_globals()
+ protected function _sanitize_globals()
{
// It would be "wrong" to unset any of these GLOBALS.
$protected = array('_SERVER', '_GET', '_POST', '_FILES', '_REQUEST',
- '_SESSION', '_ENV', 'GLOBALS', 'HTTP_RAW_POST_DATA',
- 'system_folder', 'application_folder', 'BM', 'EXT',
- 'CFG', 'URI', 'RTR', 'OUT', 'IN');
+ '_SESSION', '_ENV', 'GLOBALS', 'HTTP_RAW_POST_DATA',
+ 'system_folder', 'application_folder', 'BM', 'EXT',
+ 'CFG', 'URI', 'RTR', 'OUT', 'IN'
+ );
// Unset globals for securiy.
// This is effectively the same as register_globals = off
@@ -532,14 +510,13 @@ class CI_Input {
// Sanitize PHP_SELF
$_SERVER['PHP_SELF'] = strip_tags($_SERVER['PHP_SELF']);
-
// CSRF Protection check
if ($this->_enable_csrf == TRUE)
{
$this->security->csrf_verify();
}
- log_message('debug', "Global POST and COOKIE data sanitized");
+ log_message('debug', 'Global POST and COOKIE data sanitized');
}
// --------------------------------------------------------------------
@@ -550,11 +527,10 @@ class CI_Input {
* This is a helper function. It escapes data and
* standardizes newline characters to \n
*
- * @access private
* @param string
* @return string
*/
- private function _clean_input_data($str)
+ protected function _clean_input_data($str)
{
if (is_array($str))
{
@@ -592,12 +568,9 @@ class CI_Input {
}
// Standardize newlines if needed
- if ($this->_standardize_newlines == TRUE)
+ if ($this->_standardize_newlines == TRUE AND strpos($str, "\r") !== FALSE)
{
- if (strpos($str, "\r") !== FALSE)
- {
- $str = str_replace(array("\r\n", "\r", "\r\n\n"), PHP_EOL, $str);
- }
+ return str_replace(array("\r\n", "\r", "\r\n\n"), PHP_EOL, $str);
}
return $str;
@@ -612,13 +585,12 @@ class CI_Input {
* from trying to exploit keys we make sure that keys are
* only named with alpha-numeric text and a few other items.
*
- * @access private
* @param string
* @return string
*/
- private function _clean_input_keys($str)
+ protected function _clean_input_keys($str)
{
- if ( ! preg_match("/^[a-z0-9:_\/-]+$/i", $str))
+ if ( ! preg_match('/^[a-z0-9:_\/-]+$/i', $str))
{
exit('Disallowed Key Characters.');
}
@@ -626,7 +598,7 @@ class CI_Input {
// Clean UTF-8 if supported
if (UTF8_ENABLED === TRUE)
{
- $str = $this->uni->clean_string($str);
+ return $this->uni->clean_string($str);
}
return $str;
@@ -640,10 +612,8 @@ class CI_Input {
* In Apache, you can simply call apache_request_headers(), however for
* people running other webservers the function is undefined.
*
- * @access public
* @param bool XSS cleaning
- *
- * @return array
+ * @return array
*/
public function request_headers($xss_clean = FALSE)
{
@@ -658,7 +628,7 @@ class CI_Input {
foreach ($_SERVER as $key => $val)
{
- if (strncmp($key, 'HTTP_', 5) === 0)
+ if (strpos($key, 'HTTP_') === 0)
{
$headers[substr($key, 5)] = $this->_fetch_from_array($_SERVER, $key, $xss_clean);
}
@@ -684,7 +654,6 @@ class CI_Input {
*
* Returns the value of a single member of the headers class member
*
- * @access public
* @param string array key for $this->headers
* @param boolean XSS Clean or not
* @return mixed FALSE on failure, string on success
@@ -716,7 +685,6 @@ class CI_Input {
*
* Test to see if a request contains the HTTP_X_REQUESTED_WITH header
*
- * @access public
* @return boolean
*/
public function is_ajax_request()
@@ -731,12 +699,11 @@ class CI_Input {
*
* Test to see if a request was made from the command line
*
- * @access public
* @return boolean
*/
public function is_cli_request()
{
- return (php_sapi_name() == 'cli') or defined('STDIN');
+ return (php_sapi_name() === 'cli') or defined('STDIN');
}
}