diff options
Diffstat (limited to 'system/core/Input.php')
-rwxr-xr-x | system/core/Input.php | 378 |
1 files changed, 194 insertions, 184 deletions
diff --git a/system/core/Input.php b/system/core/Input.php index 7a16e51ab..73f46ba6a 100755 --- a/system/core/Input.php +++ b/system/core/Input.php @@ -2,7 +2,7 @@ /** * CodeIgniter * - * An open source application development framework for PHP 5.1.6 or newer + * An open source application development framework for PHP 5.2.4 or newer * * NOTICE OF LICENSE * @@ -25,8 +25,6 @@ * @filesource */ -// ------------------------------------------------------------------------ - /** * Input Class * @@ -45,51 +43,59 @@ class CI_Input { * * @var string */ - public $ip_address = FALSE; + public $ip_address = FALSE; + /** * user agent (web browser) being used by the current user * * @var string */ - public $user_agent = FALSE; + public $user_agent = FALSE; + /** * If FALSE, then $_GET will be set to an empty array * * @var bool */ - protected $_allow_get_array = TRUE; + protected $_allow_get_array = TRUE; + /** * If TRUE, then newlines are standardized * * @var bool */ - protected $_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 */ - protected $_enable_xss = FALSE; + protected $_enable_xss = FALSE; + /** * Enables a CSRF cookie token to be set. * Set automatically based on config setting * * @var bool */ - protected $_enable_csrf = FALSE; + protected $_enable_csrf = FALSE; + /** * List of all HTTP request headers * * @var array */ - protected $headers = array(); + protected $headers = array(); /** * Constructor * * Sets whether to globally enable the XSS processing * and whether to allow the $_GET array + * + * @return void */ public function __construct() { @@ -129,7 +135,7 @@ class CI_Input { { if ( ! isset($array[$index])) { - return FALSE; + return NULL; } if ($xss_clean === TRUE) @@ -143,16 +149,16 @@ class CI_Input { // -------------------------------------------------------------------- /** - * Fetch an item from the GET array - * - * @param string - * @param bool - * @return string - */ + * Fetch an item from the GET array + * + * @param string + * @param bool + * @return string + */ public function get($index = NULL, $xss_clean = FALSE) { // Check if a field has been provided - if ($index === NULL AND ! empty($_GET)) + if ($index === NULL && ! empty($_GET)) { $get = array(); @@ -170,16 +176,16 @@ class CI_Input { // -------------------------------------------------------------------- /** - * Fetch an item from the POST array - * - * @param string - * @param bool - * @return string - */ + * Fetch an item from the POST array + * + * @param string + * @param bool + * @return string + */ public function post($index = NULL, $xss_clean = FALSE) { // Check if a field has been provided - if ($index === NULL AND ! empty($_POST)) + if ($index === NULL && ! empty($_POST)) { $post = array(); @@ -198,28 +204,28 @@ class CI_Input { // -------------------------------------------------------------------- /** - * Fetch an item from either the GET array or the POST - * - * @param string The index key - * @param bool XSS cleaning - * @return string - */ + * Fetch an item from either the GET array or the POST + * + * @param string The index key + * @param bool XSS cleaning + * @return string + */ public function get_post($index = '', $xss_clean = FALSE) { - return ( ! isset($_POST[$index])) - ? $this->get($index, $xss_clean) - : $this->post($index, $xss_clean); + return isset($_POST[$index]) + ? $this->post($index, $xss_clean) + : $this->get($index, $xss_clean); } // -------------------------------------------------------------------- /** - * Fetch an item from the COOKIE array - * - * @param string - * @param bool - * @return string - */ + * Fetch an item from the COOKIE array + * + * @param string + * @param bool + * @return string + */ public function cookie($index = '', $xss_clean = FALSE) { return $this->_fetch_from_array($_COOKIE, $index, $xss_clean); @@ -228,26 +234,27 @@ class CI_Input { // ------------------------------------------------------------------------ /** - * Set cookie - * - * Accepts six parameter, or you can submit an associative - * array in the first parameter containing all the values. - * - * @param mixed - * @param string the value of the cookie - * @param string the number of seconds until expiration - * @param string the cookie domain. Usually: .yourdomain.com - * @param string the cookie path - * @param string the cookie prefix - * @param bool true makes the cookie secure - * @return void - */ - public function set_cookie($name = '', $value = '', $expire = '', $domain = '', $path = '/', $prefix = '', $secure = FALSE) + * Set cookie + * + * Accepts seven parameters, or you can submit an associative + * array in the first parameter containing all the values. + * + * @param mixed + * @param string the value of the cookie + * @param string the number of seconds until expiration + * @param string the cookie domain. Usually: .yourdomain.com + * @param string the cookie path + * @param string the cookie prefix + * @param bool true makes the cookie secure + * @param bool true makes the cookie accessible via http(s) only (no javascript) + * @return void + */ + public function set_cookie($name = '', $value = '', $expire = '', $domain = '', $path = '/', $prefix = '', $secure = FALSE, $httponly = FALSE) { if (is_array($name)) { // 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) + foreach (array('value', 'expire', 'domain', 'path', 'prefix', 'secure', 'httponly', 'name') as $item) { if (isset($name[$item])) { @@ -256,23 +263,31 @@ class CI_Input { } } - if ($prefix == '' AND config_item('cookie_prefix') != '') + if ($prefix === '' && config_item('cookie_prefix') !== '') { $prefix = config_item('cookie_prefix'); } - if ($domain == '' AND config_item('cookie_domain') != '') + + if ($domain == '' && config_item('cookie_domain') != '') { $domain = config_item('cookie_domain'); } - if ($path == '/' AND config_item('cookie_path') != '/') + + if ($path === '/' && config_item('cookie_path') !== '/') { $path = config_item('cookie_path'); } - if ($secure == FALSE AND config_item('cookie_secure') != FALSE) + + if ($secure === FALSE && config_item('cookie_secure') !== FALSE) { $secure = config_item('cookie_secure'); } + if ($httponly === FALSE && config_item('cookie_httponly') !== FALSE) + { + $httponly = config_item('cookie_httponly'); + } + if ( ! is_numeric($expire)) { $expire = time() - 86500; @@ -282,18 +297,18 @@ class CI_Input { $expire = ($expire > 0) ? time() + $expire : 0; } - setcookie($prefix.$name, $value, $expire, $path, $domain, $secure); + setcookie($prefix.$name, $value, $expire, $path, $domain, $secure, $httponly); } // -------------------------------------------------------------------- /** - * Fetch an item from the SERVER array - * - * @param string - * @param bool - * @return string - */ + * Fetch an item from the SERVER array + * + * @param string + * @param bool + * @return string + */ public function server($index = '', $xss_clean = FALSE) { return $this->_fetch_from_array($_SERVER, $index, $xss_clean); @@ -302,10 +317,10 @@ class CI_Input { // -------------------------------------------------------------------- /** - * Fetch the IP Address - * - * @return string - */ + * Fetch the IP Address + * + * @return string + */ public function ip_address() { if ($this->ip_address !== FALSE) @@ -320,11 +335,11 @@ 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') && $this->server('REMOTE_ADDR')) { $this->ip_address = $_SERVER['REMOTE_ADDR']; } - elseif ($this->server('REMOTE_ADDR') AND $this->server('HTTP_CLIENT_IP')) + elseif ($this->server('REMOTE_ADDR') && $this->server('HTTP_CLIENT_IP')) { $this->ip_address = $_SERVER['HTTP_CLIENT_IP']; } @@ -359,54 +374,25 @@ class CI_Input { // -------------------------------------------------------------------- /** - * Validate IP Address - * - * Updated version suggested by Geert De Deckere - * - * @param string - * @return bool - */ + * Validate IP Address + * + * Updated version suggested by Geert De Deckere + * + * @param string + * @return bool + */ public function valid_ip($ip) { - // if php version >= 5.2, use filter_var to check validate ip. - if (function_exists('filter_var')) - { - return (bool) filter_var($ip, FILTER_VALIDATE_IP, FILTER_FLAG_IPV4); - } - - $ip_segments = explode('.', $ip); - - // Always 4 segments needed - if (count($ip_segments) !== 4) - { - return FALSE; - } - // IP can not start with 0 - if ($ip_segments[0][0] == '0') - { - return FALSE; - } - // Check each segment - foreach ($ip_segments as $segment) - { - // 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) - { - return FALSE; - } - } - - return TRUE; + return (bool) filter_var($ip, FILTER_VALIDATE_IP, FILTER_FLAG_IPV4); } // -------------------------------------------------------------------- /** - * User Agent - * - * @return string - */ + * User Agent + * + * @return string + */ public function user_agent() { if ($this->user_agent !== FALSE) @@ -414,44 +400,51 @@ class CI_Input { return $this->user_agent; } - return $this->user_agent = ( ! isset($_SERVER['HTTP_USER_AGENT'])) ? FALSE : $_SERVER['HTTP_USER_AGENT']; + return $this->user_agent = isset($_SERVER['HTTP_USER_AGENT']) ? $_SERVER['HTTP_USER_AGENT'] : FALSE; } // -------------------------------------------------------------------- /** - * Sanitize Globals - * - * This function does the following: - * - * - Unsets $_GET data (if query strings are not enabled) - * - Unsets all globals if register_globals is enabled - * - Standardizes newline characters to \n - * - * @return void - */ + * Sanitize Globals + * + * This function does the following: + * + * - Unsets $_GET data (if query strings are not enabled) + * - Unsets all globals if register_globals is enabled + * - Standardizes newline characters to \n + * + * @return void + */ 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' - ); + $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' + ); // Unset globals for securiy. // This is effectively the same as register_globals = off foreach (array($_GET, $_POST, $_COOKIE) as $global) { - if ( ! is_array($global)) - { - if ( ! in_array($global, $protected)) - { - global $$global; - $$global = NULL; - } - } - else + if (is_array($global)) { foreach ($global as $key => $val) { @@ -462,26 +455,28 @@ class CI_Input { } } } + elseif ( ! in_array($global, $protected)) + { + global $$global; + $$global = NULL; + } } // Is $_GET data allowed? If not we'll set the $_GET to an empty array - if ($this->_allow_get_array == FALSE) + if ($this->_allow_get_array === FALSE) { $_GET = array(); } - else + elseif (is_array($_GET) && count($_GET) > 0) { - if (is_array($_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); - } + $_GET[$this->_clean_input_keys($key)] = $this->_clean_input_data($val); } } // Clean $_POST Data - if (is_array($_POST) AND count($_POST) > 0) + if (is_array($_POST) && count($_POST) > 0) { foreach ($_POST as $key => $val) { @@ -490,7 +485,7 @@ class CI_Input { } // Clean $_COOKIE Data - if (is_array($_COOKIE) AND count($_COOKIE) > 0) + if (is_array($_COOKIE) && count($_COOKIE) > 0) { // 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 @@ -511,7 +506,7 @@ class CI_Input { $_SERVER['PHP_SELF'] = strip_tags($_SERVER['PHP_SELF']); // CSRF Protection check - if ($this->_enable_csrf == TRUE) + if ($this->_enable_csrf === TRUE) { $this->security->csrf_verify(); } @@ -522,14 +517,14 @@ class CI_Input { // -------------------------------------------------------------------- /** - * Clean Input Data - * - * This is a helper function. It escapes data and - * standardizes newline characters to \n - * - * @param string - * @return string - */ + * Clean Input Data + * + * This is a helper function. It escapes data and + * standardizes newline characters to \n + * + * @param string + * @return string + */ protected function _clean_input_data($str) { if (is_array($str)) @@ -568,7 +563,7 @@ class CI_Input { } // Standardize newlines if needed - if ($this->_standardize_newlines == TRUE AND strpos($str, "\r") !== FALSE) + if ($this->_standardize_newlines === TRUE && strpos($str, "\r") !== FALSE) { return str_replace(array("\r\n", "\r", "\r\n\n"), PHP_EOL, $str); } @@ -579,19 +574,20 @@ class CI_Input { // -------------------------------------------------------------------- /** - * Clean Keys - * - * This is a helper function. To prevent malicious users - * from trying to exploit keys we make sure that keys are - * only named with alpha-numeric text and a few other items. - * - * @param string - * @return string - */ + * Clean Keys + * + * This is a helper function. To prevent malicious users + * from trying to exploit keys we make sure that keys are + * only named with alpha-numeric text and a few other items. + * + * @param string + * @return string + */ protected function _clean_input_keys($str) { if ( ! preg_match('/^[a-z0-9:_\/-]+$/i', $str)) { + set_status_header(503); exit('Disallowed Key Characters.'); } @@ -612,7 +608,7 @@ class CI_Input { * In Apache, you can simply call apache_request_headers(), however for * people running other webservers the function is undefined. * - * @param bool XSS cleaning + * @param bool XSS cleaning * @return array */ public function request_headers($xss_clean = FALSE) @@ -624,7 +620,7 @@ class CI_Input { } else { - $headers['Content-Type'] = (isset($_SERVER['CONTENT_TYPE'])) ? $_SERVER['CONTENT_TYPE'] : @getenv('CONTENT_TYPE'); + $headers['Content-Type'] = isset($_SERVER['CONTENT_TYPE']) ? $_SERVER['CONTENT_TYPE'] : @getenv('CONTENT_TYPE'); foreach ($_SERVER as $key => $val) { @@ -654,9 +650,9 @@ class CI_Input { * * Returns the value of a single member of the headers class member * - * @param string array key for $this->headers - * @param boolean XSS Clean or not - * @return mixed FALSE on failure, string on success + * @param string array key for $this->headers + * @param bool XSS Clean or not + * @return mixed FALSE on failure, string on success */ public function get_request_header($index, $xss_clean = FALSE) { @@ -667,15 +663,12 @@ class CI_Input { if ( ! isset($this->headers[$index])) { - return FALSE; - } - - if ($xss_clean === TRUE) - { - return $this->security->xss_clean($this->headers[$index]); + return NULL; } - return $this->headers[$index]; + return ($xss_clean === TRUE) + ? $this->security->xss_clean($this->headers[$index]) + : $this->headers[$index]; } // -------------------------------------------------------------------- @@ -685,11 +678,11 @@ class CI_Input { * * Test to see if a request contains the HTTP_X_REQUESTED_WITH header * - * @return boolean + * @return bool */ public function is_ajax_request() { - return ($this->server('HTTP_X_REQUESTED_WITH') === 'XMLHttpRequest'); + return ( ! empty($_SERVER['HTTP_X_REQUESTED_WITH']) && strtolower($_SERVER['HTTP_X_REQUESTED_WITH']) === 'xmlhttprequest'); } // -------------------------------------------------------------------- @@ -699,14 +692,31 @@ class CI_Input { * * Test to see if a request was made from the command line * - * @return boolean + * @return bool */ public function is_cli_request() { - return (php_sapi_name() === 'cli') or defined('STDIN'); + return (php_sapi_name() === 'cli' OR defined('STDIN')); + } + + // -------------------------------------------------------------------- + + /** + * Get Request Method + * + * Return the Request Method + * + * @param bool uppercase or lowercase + * @return bool + */ + public function method($upper = FALSE) + { + return ($upper) + ? strtoupper($this->server('REQUEST_METHOD')) + : strtolower($this->server('REQUEST_METHOD')); } } /* End of file Input.php */ -/* Location: ./system/core/Input.php */ +/* Location: ./system/core/Input.php */
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