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-rw-r--r--system/core/Input.php168
1 files changed, 8 insertions, 160 deletions
diff --git a/system/core/Input.php b/system/core/Input.php
index d4f79ee68..aefc3b7d8 100644
--- a/system/core/Input.php
+++ b/system/core/Input.php
@@ -93,8 +93,15 @@ class CI_Input {
*/
protected $_input_stream;
+ /**
+ * CI_Security instance
+ *
+ * Used for the optional $xss_filter parameter that most
+ * getter methods have here.
+ *
+ * @var CI_Security
+ */
protected $security;
- protected $uni;
// --------------------------------------------------------------------
@@ -112,15 +119,6 @@ class CI_Input {
$this->security =& load_class('Security', 'core');
- // Do we need the UTF-8 class?
- if (UTF8_ENABLED === TRUE)
- {
- $this->uni =& load_class('Utf8', 'core');
- }
-
- // Sanitize global arrays
- $this->_sanitize_globals();
-
// CSRF Protection check
if ($this->_enable_csrf === TRUE && ! is_cli())
{
@@ -555,156 +553,6 @@ class CI_Input {
// --------------------------------------------------------------------
/**
- * Sanitize Globals
- *
- * Internal method serving for the following purposes:
- *
- * - Unsets $_GET data, if query strings are not enabled
- * - Cleans POST, COOKIE and SERVER data
- *
- * @return void
- */
- protected function _sanitize_globals()
- {
- // Is $_GET data allowed? If not we'll set the $_GET to an empty array
- if (is_array($_GET))
- {
- foreach ($_GET as $key => $val)
- {
- $_GET[$this->_clean_input_keys($key)] = $this->_clean_input_data($val);
- }
- }
-
- // Clean $_POST Data
- if (is_array($_POST))
- {
- foreach ($_POST as $key => $val)
- {
- $_POST[$this->_clean_input_keys($key)] = $this->_clean_input_data($val);
- }
- }
-
- // Clean $_COOKIE Data
- if (is_array($_COOKIE))
- {
- // Also get rid of specially treated cookies that might be set by a server
- // or silly application, that are of no use to a CI application anyway
- // but that when present will trip our 'Disallowed Key Characters' alarm
- // http://www.ietf.org/rfc/rfc2109.txt
- // note that the key names below are single quoted strings, and are not PHP variables
- unset(
- $_COOKIE['$Version'],
- $_COOKIE['$Path'],
- $_COOKIE['$Domain']
- );
-
- foreach ($_COOKIE as $key => $val)
- {
- if (($cookie_key = $this->_clean_input_keys($key)) !== FALSE)
- {
- $_COOKIE[$cookie_key] = $this->_clean_input_data($val);
- }
- else
- {
- unset($_COOKIE[$key]);
- }
- }
- }
-
- // Sanitize PHP_SELF
- $_SERVER['PHP_SELF'] = strip_tags($_SERVER['PHP_SELF']);
-
- log_message('info', 'Global POST, GET and COOKIE data sanitized');
- }
-
- // --------------------------------------------------------------------
-
- /**
- * Clean Input Data
- *
- * Internal method that aids in escaping data and
- * standardizing newline characters to PHP_EOL.
- *
- * @param string|string[] $str Input string(s)
- * @return string
- */
- protected function _clean_input_data($str)
- {
- if (is_array($str))
- {
- $new_array = array();
- foreach (array_keys($str) as $key)
- {
- $new_array[$this->_clean_input_keys($key)] = $this->_clean_input_data($str[$key]);
- }
- return $new_array;
- }
-
- /* We strip slashes if magic quotes is on to keep things consistent
-
- NOTE: In PHP 5.4 get_magic_quotes_gpc() will always return 0 and
- it will probably not exist in future versions at all.
- */
- if ( ! is_php('5.4') && get_magic_quotes_gpc())
- {
- $str = stripslashes($str);
- }
-
- // Clean UTF-8 if supported
- if (UTF8_ENABLED === TRUE)
- {
- $str = $this->uni->clean_string($str);
- }
-
- // Remove control characters
- $str = remove_invisible_characters($str, FALSE);
-
- return $str;
- }
-
- // --------------------------------------------------------------------
-
- /**
- * Clean Keys
- *
- * Internal method that helps to prevent malicious users
- * from trying to exploit keys we make sure that keys are
- * only named with alpha-numeric text and a few other items.
- *
- * @param string $str Input string
- * @param bool $fatal Whether to terminate script exection
- * or to return FALSE if an invalid
- * key is encountered
- * @return string|bool
- */
- protected function _clean_input_keys($str, $fatal = TRUE)
- {
- if ( ! preg_match('/^[a-z0-9:_\/|-]+$/i', $str))
- {
- if ($fatal === TRUE)
- {
- return FALSE;
- }
- else
- {
- set_status_header(503);
- echo 'Disallowed Key Characters.';
- exit(7); // EXIT_USER_INPUT
- }
- }
-
- // Clean UTF-8 if supported
- if (UTF8_ENABLED === TRUE)
- {
- return $this->uni->clean_string($str);
- }
-
- return $str;
- }
-
- // --------------------------------------------------------------------
-
- /**
* Request Headers
*
* @param bool $xss_clean Whether to apply XSS filtering