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POHaving Issues with Codeigniter App "The URI you submitted has disallowed characters."
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2012-12-11T05:09:05.970
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I tried with almost all the methods posted in the thread. My url is like : www.example.com/twilio_sms/update_status‏ Many posts explained to edit <pre><code>if ( ! preg_match("|^[".str_replace(array('\\-', '\-'), '-', preg_quote($this->config->item('permitted_uri_chars'), '-'))."]+$|i", $str)) </code></pre> to <pre><code> if ( ! preg_match("|^[".($this->config->item('permitted_uri_chars'))."]+$|i", rawurlencode($str))) </code></pre> but it leads to 404 error on that page. /system/core/URI.php : <pre><code> <?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 */ // ------------------------------------------------------------------------ /** * URI Class * * Parses URIs and determines routing * * @package CodeIgniter * @subpackage Libraries * @category URI * @author ExpressionEngine Dev Team * @link http://codeigniter.com/user_guide/libraries/uri.html */ class CI_URI { var $keyval = array(); var $uri_string; var $segments = array(); var $rsegments = array(); /** * Constructor * * Simply globalizes the $RTR object. The front * loads the Router class early on so it's not available * normally as other classes are. * * @access public */ function __construct() { $this->config =& load_class('Config', 'core'); log_message('debug', "URI Class Initialized"); } // -------------------------------------------------------------------- /** * Get the URI String * * @access private * @return string */ function _fetch_uri_string() { if (strtoupper($this->config->item('uri_protocol')) == 'AUTO') { // If the URL has a question mark then it's simplest to just // build the URI string from the zero index of the $_GET array. // This avoids having to deal with $_SERVER variables, which // can be unreliable in some environments if (is_array($_GET) && count($_GET) == 1 && trim(key($_GET), '/') != '') { $this->uri_string = key($_GET); return; } // Is there a PATH_INFO variable? // Note: some servers seem to have trouble with getenv() so we'll test it two ways $path = (isset($_SERVER['PATH_INFO'])) ? $_SERVER['PATH_INFO'] : @getenv('PATH_INFO'); if (trim($path, '/') != '' && $path != "/".SELF) { $this->uri_string = $path; return; } // No PATH_INFO?... What about QUERY_STRING? $path = (isset($_SERVER['QUERY_STRING'])) ? $_SERVER['QUERY_STRING'] : @getenv('QUERY_STRING'); if (trim($path, '/') != '') { $this->uri_string = $path; return; } // No QUERY_STRING?... Maybe the ORIG_PATH_INFO variable exists? $path = str_replace($_SERVER['SCRIPT_NAME'], '', (isset($_SERVER['ORIG_PATH_INFO'])) ? $_SERVER['ORIG_PATH_INFO'] : @getenv('ORIG_PATH_INFO')); if (trim($path, '/') != '' && $path != "/".SELF) { // remove path and script information so we have good URI data $this->uri_string = $path; return; } // We've exhausted all our options... $this->uri_string = ''; } else { $uri = strtoupper($this->config->item('uri_protocol')); if ($uri == 'REQUEST_URI') { $this->uri_string = $this->_parse_request_uri(); return; } $this->uri_string = (isset($_SERVER[$uri])) ? $_SERVER[$uri] : @getenv($uri); } // If the URI contains only a slash we'll kill it if ($this->uri_string == '/') { $this->uri_string = ''; } } // -------------------------------------------------------------------- /** * Parse the REQUEST_URI * * Due to the way REQUEST_URI works it usually contains path info * that makes it unusable as URI data. We'll trim off the unnecessary * data, hopefully arriving at a valid URI that we can use. * * @access private * @return string */ function _parse_request_uri() { if ( ! isset($_SERVER['REQUEST_URI']) OR $_SERVER['REQUEST_URI'] == '') { return ''; } $request_uri = preg_replace("|/(.*)|", "\\1", str_replace("\\", "/", $_SERVER['REQUEST_URI'])); if ($request_uri == '' OR $request_uri == SELF) { return ''; } $fc_path = FCPATH.SELF; if (strpos($request_uri, '?') !== FALSE) { $fc_path .= '?'; } $parsed_uri = explode("/", $request_uri); $i = 0; foreach(explode("/", $fc_path) as $segment) { if (isset($parsed_uri[$i]) && $segment == $parsed_uri[$i]) { $i++; } } $parsed_uri = implode("/", array_slice($parsed_uri, $i)); if ($parsed_uri != '') { $parsed_uri = '/'.$parsed_uri; } return $parsed_uri; } // -------------------------------------------------------------------- /** * Filter segments for malicious characters * * @access private * @param string * @return string */ function _filter_uri($str) { if ($str != '' && $this->config->item('permitted_uri_chars') != '' && $this->config->item('enable_query_strings') == FALSE) { // preg_quote() in PHP 5.3 escapes -, so the str_replace() and addition of - to preg_quote() is to maintain backwards // compatibility as many are unaware of how characters in the permitted_uri_chars will be parsed as a regex pattern if ( ! preg_match("|^[".str_replace(array('\\-', '\-'), '-', preg_quote($this->config->item('permitted_uri_chars'), '-'))."]+$|i", $str)) { show_error('The URI you submitted has disallowed characters.', 400); } } // Convert programatic characters to entities $bad = array('$', '(', ')', '%28', '%29'); $good = array('&#36;', '&#40;', '&#41;', '&#40;', '&#41;'); return str_replace($bad, $good, $str); } // -------------------------------------------------------------------- /** * Remove the suffix from the URL if needed * * @access private * @return void */ function _remove_url_suffix() { if ($this->config->item('url_suffix') != "") { $this->uri_string = preg_replace("|".preg_quote($this->config->item('url_suffix'))."$|", "", $this->uri_string); } } // -------------------------------------------------------------------- /** * Explode the URI Segments. The individual segments will * be stored in the $this->segments array. * * @access private * @return void */ function _explode_segments() { foreach(explode("/", preg_replace("|/*(.+?)/*$|", "\\1", $this->uri_string)) as $val) { // Filter segments for security $val = trim($this->_filter_uri($val)); if ($val != '') { $this->segments[] = $val; } } } // -------------------------------------------------------------------- /** * Re-index Segments * * This function re-indexes the $this->segment array so that it * starts at 1 rather than 0. Doing so makes it simpler to * use functions like $this->uri->segment(n) since there is * a 1:1 relationship between the segment array and the actual segments. * * @access private * @return void */ function _reindex_segments() { array_unshift($this->segments, NULL); array_unshift($this->rsegments, NULL); unset($this->segments[0]); unset($this->rsegments[0]); } // -------------------------------------------------------------------- /** * Fetch a URI Segment * * This function returns the URI segment based on the number provided. * * @access public * @param integer * @param bool * @return string */ function segment($n, $no_result = FALSE) { return ( ! isset($this->segments[$n])) ? $no_result : $this->segments[$n]; } // -------------------------------------------------------------------- /** * Fetch a URI "routed" Segment * * This function returns the re-routed URI segment (assuming routing rules are used) * based on the number provided. If there is no routing this function returns the * same result as $this->segment() * * @access public * @param integer * @param bool * @return string */ function rsegment($n, $no_result = FALSE) { return ( ! isset($this->rsegments[$n])) ? $no_result : $this->rsegments[$n]; } // -------------------------------------------------------------------- /** * Generate a key value pair from the URI string * * This function generates and associative array of URI data starting * at the supplied segment. For example, if this is your URI: * * example.com/user/search/name/joe/location/UK/gender/male * * You can use this function to generate an array with this prototype: * * array ( * name => joe * location => UK * gender => male * ) * * @access public * @param integer the starting segment number * @param array an array of default values * @return array */ function uri_to_assoc($n = 3, $default = array()) { return $this->_uri_to_assoc($n, $default, 'segment'); } /** * Identical to above only it uses the re-routed segment array * */ function ruri_to_assoc($n = 3, $default = array()) { return $this->_uri_to_assoc($n, $default, 'rsegment'); } // -------------------------------------------------------------------- /** * Generate a key value pair from the URI string or Re-routed URI string * * @access private * @param integer the starting segment number * @param array an array of default values * @param string which array we should use * @return array */ function _uri_to_assoc($n = 3, $default = array(), $which = 'segment') { if ($which == 'segment') { $total_segments = 'total_segments'; $segment_array = 'segment_array'; } else { $total_segments = 'total_rsegments'; $segment_array = 'rsegment_array'; } if ( ! is_numeric($n)) { return $default; } if (isset($this->keyval[$n])) { return $this->keyval[$n]; } if ($this->$total_segments() < $n) { if (count($default) == 0) { return array(); } $retval = array(); foreach ($default as $val) { $retval[$val] = FALSE; } return $retval; } $segments = array_slice($this->$segment_array(), ($n - 1)); $i = 0; $lastval = ''; $retval = array(); foreach ($segments as $seg) { if ($i % 2) { $retval[$lastval] = $seg; } else { $retval[$seg] = FALSE; $lastval = $seg; } $i++; } if (count($default) > 0) { foreach ($default as $val) { if ( ! array_key_exists($val, $retval)) { $retval[$val] = FALSE; } } } // Cache the array for reuse $this->keyval[$n] = $retval; return $retval; } // -------------------------------------------------------------------- /** * Generate a URI string from an associative array * * * @access public * @param array an associative array of key/values * @return array */ function assoc_to_uri($array) { $temp = array(); foreach ((array)$array as $key => $val) { $temp[] = $key; $temp[] = $val; } return implode('/', $temp); } // -------------------------------------------------------------------- /** * Fetch a URI Segment and add a trailing slash * * @access public * @param integer * @param string * @return string */ function slash_segment($n, $where = 'trailing') { return $this->_slash_segment($n, $where, 'segment'); } // -------------------------------------------------------------------- /** * Fetch a URI Segment and add a trailing slash * * @access public * @param integer * @param string * @return string */ function slash_rsegment($n, $where = 'trailing') { return $this->_slash_segment($n, $where, 'rsegment'); } // -------------------------------------------------------------------- /** * Fetch a URI Segment and add a trailing slash - helper function * * @access private * @param integer * @param string * @param string * @return string */ function _slash_segment($n, $where = 'trailing', $which = 'segment') { $leading = '/'; $trailing = '/'; if ($where == 'trailing') { $leading = ''; } elseif ($where == 'leading') { $trailing = ''; } return $leading.$this->$which($n).$trailing; } // -------------------------------------------------------------------- /** * Segment Array * * @access public * @return array */ function segment_array() { return $this->segments; } // -------------------------------------------------------------------- /** * Routed Segment Array * * @access public * @return array */ function rsegment_array() { return $this->rsegments; } // -------------------------------------------------------------------- /** * Total number of segments * * @access public * @return integer */ function total_segments() { return count($this->segments); } // -------------------------------------------------------------------- /** * Total number of routed segments * * @access public * @return integer */ function total_rsegments() { return count($this->rsegments); } // -------------------------------------------------------------------- /** * Fetch the entire URI string * * @access public * @return string */ function uri_string() { return $this->uri_string; } // -------------------------------------------------------------------- /** * Fetch the entire Re-routed URI string * * @access public * @return string */ function ruri_string() { return '/'.implode('/', $this->rsegment_array()).'/'; } } // END URI Class /* End of file URI.php */ /* Location: ./system/core/URI.php */ </code></pre> /application/config/config.php <pre><code> $config['permitted_uri_chars'] = 'a-z 0-9~%.:_\-?'; $config['allow_get_array'] = TRUE; $config['enable_query_strings'] = FALSE; $config['controller_trigger'] = 'c'; $config['function_trigger'] = 'm'; $config['directory_trigger'] = 'd'; // experimental not currently in use </code></pre> When i copied the url from browser it is like : <pre><code>https://example.com/twilio_sms/update_status%E2%80%8F </code></pre> And it should be like : <pre><code>https://example.com/twilio_sms/update_status </code></pre> Why it is adding extra characters ?
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Having Issues with Codeigniter App "The URI you submitted has disallowed characters."
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1. COWhat is creating that url? A link inside your site? Something is passing illegal characters to the end of the URL. %E2%80%8F translates to â` which are obviously disallowed characters
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