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-rw-r--r--system/core/Input.php285
1 files changed, 26 insertions, 259 deletions
diff --git a/system/core/Input.php b/system/core/Input.php
index eba5f67f0..59ca3e112 100644
--- a/system/core/Input.php
+++ b/system/core/Input.php
@@ -59,45 +59,6 @@ class CI_Input {
protected $ip_address = FALSE;
/**
- * Allow GET array flag
- *
- * If set to FALSE, then $_GET will be set to an empty array.
- *
- * @var bool
- */
- protected $_allow_get_array = TRUE;
-
- /**
- * Standardize new lines flag
- *
- * If set to TRUE, then newlines are standardized.
- *
- * @var bool
- */
- protected $_standardize_newlines;
-
- /**
- * Enable XSS flag
- *
- * Determines whether the XSS filter is always active when
- * GET, POST or COOKIE data is encountered.
- * Set automatically based on config setting.
- *
- * @var bool
- */
- protected $_enable_xss = FALSE;
-
- /**
- * Enable CSRF flag
- *
- * Enables a CSRF cookie token to be set.
- * Set automatically based on config setting.
- *
- * @var bool
- */
- protected $_enable_csrf = FALSE;
-
- /**
* List of all HTTP request headers
*
* @var array
@@ -123,8 +84,15 @@ 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 $uni;
// --------------------------------------------------------------------
@@ -136,30 +104,9 @@ class CI_Input {
*
* @return void
*/
- public function __construct()
+ public function __construct(CI_Security &$security)
{
- $this->_allow_get_array = (config_item('allow_get_array') !== FALSE);
- $this->_enable_xss = (config_item('global_xss_filtering') === TRUE);
- $this->_enable_csrf = (config_item('csrf_protection') === TRUE);
- $this->_standardize_newlines = (bool) config_item('standardize_newlines');
-
- $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())
- {
- $this->security->csrf_verify();
- }
-
+ $this->security = $security;
log_message('info', 'Input Class Initialized');
}
@@ -175,10 +122,8 @@ class CI_Input {
* @param bool $xss_clean Whether to apply XSS filtering
* @return mixed
*/
- protected function _fetch_from_array(&$array, $index = NULL, $xss_clean = NULL)
+ protected function _fetch_from_array(&$array, $index = NULL, $xss_clean = FALSE)
{
- is_bool($xss_clean) OR $xss_clean = $this->_enable_xss;
-
// If $index is NULL, it means that the whole $array is requested
isset($index) OR $index = array_keys($array);
@@ -238,7 +183,7 @@ class CI_Input {
* @param bool $xss_clean Whether to apply XSS filtering
* @return mixed
*/
- public function get($index = NULL, $xss_clean = NULL)
+ public function get($index = NULL, $xss_clean = FALSE)
{
return $this->_fetch_from_array($_GET, $index, $xss_clean);
}
@@ -252,7 +197,7 @@ class CI_Input {
* @param bool $xss_clean Whether to apply XSS filtering
* @return mixed
*/
- public function post($index = NULL, $xss_clean = NULL)
+ public function post($index = NULL, $xss_clean = FALSE)
{
return $this->_fetch_from_array($_POST, $index, $xss_clean);
}
@@ -266,11 +211,10 @@ class CI_Input {
* @param bool $xss_clean Whether to apply XSS filtering
* @return mixed
*/
- public function post_get($index, $xss_clean = NULL)
+ public function post_get($index, $xss_clean = FALSE)
{
- return isset($_POST[$index])
- ? $this->post($index, $xss_clean)
- : $this->get($index, $xss_clean);
+ $output = $this->post($index, $xss_clean);
+ return isset($output) ? $output : $this->get($index, $xss_clean);
}
// --------------------------------------------------------------------
@@ -282,11 +226,10 @@ class CI_Input {
* @param bool $xss_clean Whether to apply XSS filtering
* @return mixed
*/
- public function get_post($index, $xss_clean = NULL)
+ public function get_post($index, $xss_clean = FALSE)
{
- return isset($_GET[$index])
- ? $this->get($index, $xss_clean)
- : $this->post($index, $xss_clean);
+ $output = $this->get($index, $xss_clean);
+ return isset($output) ? $output : $this->post($index, $xss_clean);
}
// --------------------------------------------------------------------
@@ -298,7 +241,7 @@ class CI_Input {
* @param bool $xss_clean Whether to apply XSS filtering
* @return mixed
*/
- public function cookie($index = NULL, $xss_clean = NULL)
+ public function cookie($index = NULL, $xss_clean = FALSE)
{
return $this->_fetch_from_array($_COOKIE, $index, $xss_clean);
}
@@ -312,7 +255,7 @@ class CI_Input {
* @param bool $xss_clean Whether to apply XSS filtering
* @return mixed
*/
- public function server($index, $xss_clean = NULL)
+ public function server($index, $xss_clean = FALSE)
{
return $this->_fetch_from_array($_SERVER, $index, $xss_clean);
}
@@ -328,7 +271,7 @@ class CI_Input {
* @param bool $xss_clean Whether to apply XSS filtering
* @return mixed
*/
- public function input_stream($index = NULL, $xss_clean = NULL)
+ public function input_stream($index = NULL, $xss_clean = FALSE)
{
// Prior to PHP 5.6, the input stream can only be read once,
// so we'll need to check if we have already done that first.
@@ -361,7 +304,7 @@ class CI_Input {
* @param string $samesite SameSite attribute
* @return void
*/
- public function set_cookie($name, $value = '', $expire = '', $domain = '', $path = '/', $prefix = '', $secure = NULL, $httponly = NULL, $samesite = NULL)
+ public function set_cookie($name, $value = '', $expire = 0, $domain = '', $path = '/', $prefix = '', $secure = NULL, $httponly = NULL, $samesite = NULL)
{
if (is_array($name))
{
@@ -398,9 +341,9 @@ class CI_Input {
? (bool) config_item('cookie_httponly')
: (bool) $httponly;
- if ( ! is_numeric($expire))
+ if ( ! is_numeric($expire) OR $expire < 0)
{
- $expire = time() - 86500;
+ $expire = 1;
}
else
{
@@ -621,7 +564,7 @@ class CI_Input {
*
* @return string|null User Agent string or NULL if it doesn't exist
*/
- public function user_agent($xss_clean = NULL)
+ public function user_agent($xss_clean = FALSE)
{
return $this->_fetch_from_array($_SERVER, 'HTTP_USER_AGENT', $xss_clean);
}
@@ -629,167 +572,6 @@ 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
- * - Standardizes newline characters to PHP_EOL
- *
- * @return void
- */
- protected function _sanitize_globals()
- {
- // Is $_GET data allowed? If not we'll set the $_GET to an empty array
- if ($this->_allow_get_array === FALSE)
- {
- $_GET = array();
- }
- elseif (is_array($_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('debug', '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);
-
- // Standardize newlines if needed
- if ($this->_standardize_newlines === TRUE)
- {
- return preg_replace('/(?:\r\n|[\r\n])/', PHP_EOL, $str);
- }
-
- 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
@@ -881,21 +663,6 @@ class CI_Input {
// --------------------------------------------------------------------
/**
- * Is CLI request?
- *
- * Test to see if a request was made from the command line.
- *
- * @deprecated 3.0.0 Use is_cli() instead
- * @return bool
- */
- public function is_cli_request()
- {
- return is_cli();
- }
-
- // --------------------------------------------------------------------
-
- /**
* Get Request Method
*
* Return the request method
generated by cgit v1.2.3-24-g4f1b (git 2.32.0) at 2024-11-21 16:12:26 +0100