| <?php if ( ! defined('BASEPATH')) exit('No direct script access allowed'); |
| /** |
| * CodeIgniter |
| * |
| * An open source application development framework for PHP 4.3.2 or newer |
| * |
| * @package CodeIgniter |
| * @author ExpressionEngine Dev Team |
| * @copyright Copyright (c) 2008 - 2010, EllisLab, Inc. |
| * @license http://codeigniter.com/user_guide/license.html |
| * @link http://codeigniter.com |
| * @since Version 1.0 |
| * @filesource |
| */ |
| |
| // ------------------------------------------------------------------------ |
| |
| /** |
| * Validation Class |
| * |
| * @package CodeIgniter |
| * @subpackage Libraries |
| * @category Validation |
| * @author ExpressionEngine Dev Team |
| * @link http://codeigniter.com/user_guide/libraries/validation.html |
| */ |
| class CI_Validation { |
| |
| var $CI; |
| var $error_string = ''; |
| var $_error_array = array(); |
| var $_rules = array(); |
| var $_fields = array(); |
| var $_error_messages = array(); |
| var $_current_field = ''; |
| var $_safe_form_data = FALSE; |
| var $_error_prefix = '<p>'; |
| var $_error_suffix = '</p>'; |
| |
| |
| |
| /** |
| * Constructor |
| * |
| */ |
| function CI_Validation() |
| { |
| $this->CI =& get_instance(); |
| |
| if (function_exists('mb_internal_encoding')) |
| { |
| mb_internal_encoding($this->CI->config->item('charset')); |
| } |
| |
| log_message('debug', "Validation Class Initialized"); |
| } |
| |
| // -------------------------------------------------------------------- |
| |
| /** |
| * Set Fields |
| * |
| * This function takes an array of field names as input |
| * and generates class variables with the same name, which will |
| * either be blank or contain the $_POST value corresponding to it |
| * |
| * @access public |
| * @param string |
| * @param string |
| * @return void |
| */ |
| function set_fields($data = '', $field = '') |
| { |
| if ($data == '') |
| { |
| if (count($this->_fields) == 0) |
| { |
| return FALSE; |
| } |
| } |
| else |
| { |
| if ( ! is_array($data)) |
| { |
| $data = array($data => $field); |
| } |
| |
| if (count($data) > 0) |
| { |
| $this->_fields = $data; |
| } |
| } |
| |
| foreach($this->_fields as $key => $val) |
| { |
| $this->$key = ( ! isset($_POST[$key])) ? '' : $this->prep_for_form($_POST[$key]); |
| |
| $error = $key.'_error'; |
| if ( ! isset($this->$error)) |
| { |
| $this->$error = ''; |
| } |
| } |
| } |
| |
| // -------------------------------------------------------------------- |
| |
| /** |
| * Set Rules |
| * |
| * This function takes an array of field names and validation |
| * rules as input ad simply stores is for use later. |
| * |
| * @access public |
| * @param mixed |
| * @param string |
| * @return void |
| */ |
| function set_rules($data, $rules = '') |
| { |
| if ( ! is_array($data)) |
| { |
| if ($rules == '') |
| return; |
| |
| $data = array($data => $rules); |
| } |
| |
| foreach ($data as $key => $val) |
| { |
| $this->_rules[$key] = $val; |
| } |
| } |
| |
| // -------------------------------------------------------------------- |
| |
| /** |
| * Set Error Message |
| * |
| * Lets users set their own error messages on the fly. Note: The key |
| * name has to match the function name that it corresponds to. |
| * |
| * @access public |
| * @param string |
| * @param string |
| * @return string |
| */ |
| function set_message($lang, $val = '') |
| { |
| if ( ! is_array($lang)) |
| { |
| $lang = array($lang => $val); |
| } |
| |
| $this->_error_messages = array_merge($this->_error_messages, $lang); |
| } |
| |
| // -------------------------------------------------------------------- |
| |
| /** |
| * Set The Error Delimiter |
| * |
| * Permits a prefix/suffix to be added to each error message |
| * |
| * @access public |
| * @param string |
| * @param string |
| * @return void |
| */ |
| function set_error_delimiters($prefix = '<p>', $suffix = '</p>') |
| { |
| $this->_error_prefix = $prefix; |
| $this->_error_suffix = $suffix; |
| } |
| |
| // -------------------------------------------------------------------- |
| |
| /** |
| * Run the Validator |
| * |
| * This function does all the work. |
| * |
| * @access public |
| * @return bool |
| */ |
| function run() |
| { |
| // Do we even have any data to process? Mm? |
| if (count($_POST) == 0 OR count($this->_rules) == 0) |
| { |
| return FALSE; |
| } |
| |
| // Load the language file containing error messages |
| $this->CI->lang->load('validation'); |
| |
| // Cycle through the rules and test for errors |
| foreach ($this->_rules as $field => $rules) |
| { |
| //Explode out the rules! |
| $ex = explode('|', $rules); |
| |
| // Is the field required? If not, if the field is blank we'll move on to the next test |
| if ( ! in_array('required', $ex, TRUE)) |
| { |
| if ( ! isset($_POST[$field]) OR $_POST[$field] == '') |
| { |
| continue; |
| } |
| } |
| |
| /* |
| * Are we dealing with an "isset" rule? |
| * |
| * Before going further, we'll see if one of the rules |
| * is to check whether the item is set (typically this |
| * applies only to checkboxes). If so, we'll |
| * test for it here since there's not reason to go |
| * further |
| */ |
| if ( ! isset($_POST[$field])) |
| { |
| if (in_array('isset', $ex, TRUE) OR in_array('required', $ex)) |
| { |
| if ( ! isset($this->_error_messages['isset'])) |
| { |
| if (FALSE === ($line = $this->CI->lang->line('isset'))) |
| { |
| $line = 'The field was not set'; |
| } |
| } |
| else |
| { |
| $line = $this->_error_messages['isset']; |
| } |
| |
| // Build the error message |
| $mfield = ( ! isset($this->_fields[$field])) ? $field : $this->_fields[$field]; |
| $message = sprintf($line, $mfield); |
| |
| // Set the error variable. Example: $this->username_error |
| $error = $field.'_error'; |
| $this->$error = $this->_error_prefix.$message.$this->_error_suffix; |
| $this->_error_array[] = $message; |
| } |
| |
| continue; |
| } |
| |
| /* |
| * Set the current field |
| * |
| * The various prepping functions need to know the |
| * current field name so they can do this: |
| * |
| * $_POST[$this->_current_field] == 'bla bla'; |
| */ |
| $this->_current_field = $field; |
| |
| // Cycle through the rules! |
| foreach ($ex As $rule) |
| { |
| // Is the rule a callback? |
| $callback = FALSE; |
| if (substr($rule, 0, 9) == 'callback_') |
| { |
| $rule = substr($rule, 9); |
| $callback = TRUE; |
| } |
| |
| // Strip the parameter (if exists) from the rule |
| // Rules can contain a parameter: max_length[5] |
| $param = FALSE; |
| if (preg_match("/(.*?)\[(.*?)\]/", $rule, $match)) |
| { |
| $rule = $match[1]; |
| $param = $match[2]; |
| } |
| |
| // Call the function that corresponds to the rule |
| if ($callback === TRUE) |
| { |
| if ( ! method_exists($this->CI, $rule)) |
| { |
| continue; |
| } |
| |
| $result = $this->CI->$rule($_POST[$field], $param); |
| |
| // If the field isn't required and we just processed a callback we'll move on... |
| if ( ! in_array('required', $ex, TRUE) AND $result !== FALSE) |
| { |
| continue 2; |
| } |
| |
| } |
| else |
| { |
| if ( ! method_exists($this, $rule)) |
| { |
| /* |
| * Run the native PHP function if called for |
| * |
| * If our own wrapper function doesn't exist we see |
| * if a native PHP function does. Users can use |
| * any native PHP function call that has one param. |
| */ |
| if (function_exists($rule)) |
| { |
| $_POST[$field] = $rule($_POST[$field]); |
| $this->$field = $_POST[$field]; |
| } |
| |
| continue; |
| } |
| |
| $result = $this->$rule($_POST[$field], $param); |
| } |
| |
| // Did the rule test negatively? If so, grab the error. |
| if ($result === FALSE) |
| { |
| if ( ! isset($this->_error_messages[$rule])) |
| { |
| if (FALSE === ($line = $this->CI->lang->line($rule))) |
| { |
| $line = 'Unable to access an error message corresponding to your field name.'; |
| } |
| } |
| else |
| { |
| $line = $this->_error_messages[$rule]; |
| } |
| |
| // Build the error message |
| $mfield = ( ! isset($this->_fields[$field])) ? $field : $this->_fields[$field]; |
| $mparam = ( ! isset($this->_fields[$param])) ? $param : $this->_fields[$param]; |
| $message = sprintf($line, $mfield, $mparam); |
| |
| // Set the error variable. Example: $this->username_error |
| $error = $field.'_error'; |
| $this->$error = $this->_error_prefix.$message.$this->_error_suffix; |
| |
| // Add the error to the error array |
| $this->_error_array[] = $message; |
| continue 2; |
| } |
| } |
| |
| } |
| |
| $total_errors = count($this->_error_array); |
| |
| /* |
| * Recompile the class variables |
| * |
| * If any prepping functions were called the $_POST data |
| * might now be different then the corresponding class |
| * variables so we'll set them anew. |
| */ |
| if ($total_errors > 0) |
| { |
| $this->_safe_form_data = TRUE; |
| } |
| |
| $this->set_fields(); |
| |
| // Did we end up with any errors? |
| if ($total_errors == 0) |
| { |
| return TRUE; |
| } |
| |
| // Generate the error string |
| foreach ($this->_error_array as $val) |
| { |
| $this->error_string .= $this->_error_prefix.$val.$this->_error_suffix."\n"; |
| } |
| |
| return FALSE; |
| } |
| |
| // -------------------------------------------------------------------- |
| |
| /** |
| * Required |
| * |
| * @access public |
| * @param string |
| * @return bool |
| */ |
| function required($str) |
| { |
| if ( ! is_array($str)) |
| { |
| return (trim($str) == '') ? FALSE : TRUE; |
| } |
| else |
| { |
| return ( ! empty($str)); |
| } |
| } |
| |
| // -------------------------------------------------------------------- |
| |
| /** |
| * Match one field to another |
| * |
| * @access public |
| * @param string |
| * @param field |
| * @return bool |
| */ |
| function matches($str, $field) |
| { |
| if ( ! isset($_POST[$field])) |
| { |
| return FALSE; |
| } |
| |
| return ($str !== $_POST[$field]) ? FALSE : TRUE; |
| } |
| |
| // -------------------------------------------------------------------- |
| |
| /** |
| * Minimum Length |
| * |
| * @access public |
| * @param string |
| * @param value |
| * @return bool |
| */ |
| function min_length($str, $val) |
| { |
| if (preg_match("/[^0-9]/", $val)) |
| { |
| return FALSE; |
| } |
| |
| if (function_exists('mb_strlen')) |
| { |
| return (mb_strlen($str) < $val) ? FALSE : TRUE; |
| } |
| |
| return (strlen($str) < $val) ? FALSE : TRUE; |
| } |
| |
| // -------------------------------------------------------------------- |
| |
| /** |
| * Max Length |
| * |
| * @access public |
| * @param string |
| * @param value |
| * @return bool |
| */ |
| function max_length($str, $val) |
| { |
| if (preg_match("/[^0-9]/", $val)) |
| { |
| return FALSE; |
| } |
| |
| if (function_exists('mb_strlen')) |
| { |
| return (mb_strlen($str) > $val) ? FALSE : TRUE; |
| } |
| |
| return (strlen($str) > $val) ? FALSE : TRUE; |
| } |
| |
| // -------------------------------------------------------------------- |
| |
| /** |
| * Exact Length |
| * |
| * @access public |
| * @param string |
| * @param value |
| * @return bool |
| */ |
| function exact_length($str, $val) |
| { |
| if (preg_match("/[^0-9]/", $val)) |
| { |
| return FALSE; |
| } |
| |
| if (function_exists('mb_strlen')) |
| { |
| return (mb_strlen($str) != $val) ? FALSE : TRUE; |
| } |
| |
| return (strlen($str) != $val) ? FALSE : TRUE; |
| } |
| |
| // -------------------------------------------------------------------- |
| |
| /** |
| * Valid Email |
| * |
| * @access public |
| * @param string |
| * @return bool |
| */ |
| function valid_email($str) |
| { |
| return ( ! preg_match("/^([a-z0-9\+_\-]+)(\.[a-z0-9\+_\-]+)*@([a-z0-9\-]+\.)+[a-z]{2,6}$/ix", $str)) ? FALSE : TRUE; |
| } |
| |
| // -------------------------------------------------------------------- |
| |
| /** |
| * Valid Emails |
| * |
| * @access public |
| * @param string |
| * @return bool |
| */ |
| function valid_emails($str) |
| { |
| if (strpos($str, ',') === FALSE) |
| { |
| return $this->valid_email(trim($str)); |
| } |
| |
| foreach(explode(',', $str) as $email) |
| { |
| if (trim($email) != '' && $this->valid_email(trim($email)) === FALSE) |
| { |
| return FALSE; |
| } |
| } |
| |
| return TRUE; |
| } |
| |
| // -------------------------------------------------------------------- |
| |
| /** |
| * Validate IP Address |
| * |
| * @access public |
| * @param string |
| * @return string |
| */ |
| function valid_ip($ip) |
| { |
| return $this->CI->input->valid_ip($ip); |
| } |
| |
| // -------------------------------------------------------------------- |
| |
| /** |
| * Alpha |
| * |
| * @access public |
| * @param string |
| * @return bool |
| */ |
| function alpha($str) |
| { |
| return ( ! preg_match("/^([a-z])+$/i", $str)) ? FALSE : TRUE; |
| } |
| |
| // -------------------------------------------------------------------- |
| |
| /** |
| * Alpha-numeric |
| * |
| * @access public |
| * @param string |
| * @return bool |
| */ |
| function alpha_numeric($str) |
| { |
| return ( ! preg_match("/^([a-z0-9])+$/i", $str)) ? FALSE : TRUE; |
| } |
| |
| // -------------------------------------------------------------------- |
| |
| /** |
| * Alpha-numeric with underscores and dashes |
| * |
| * @access public |
| * @param string |
| * @return bool |
| */ |
| function alpha_dash($str) |
| { |
| return ( ! preg_match("/^([-a-z0-9_-])+$/i", $str)) ? FALSE : TRUE; |
| } |
| |
| // -------------------------------------------------------------------- |
| |
| /** |
| * Numeric |
| * |
| * @access public |
| * @param string |
| * @return bool |
| */ |
| function numeric($str) |
| { |
| return (bool)preg_match( '/^[\-+]?[0-9]*\.?[0-9]+$/', $str); |
| |
| } |
| |
| // -------------------------------------------------------------------- |
| |
| /** |
| * Is Numeric |
| * |
| * @access public |
| * @param string |
| * @return bool |
| */ |
| function is_numeric($str) |
| { |
| return ( ! is_numeric($str)) ? FALSE : TRUE; |
| } |
| |
| // -------------------------------------------------------------------- |
| |
| /** |
| * Integer |
| * |
| * @access public |
| * @param string |
| * @return bool |
| */ |
| function integer($str) |
| { |
| return (bool)preg_match( '/^[\-+]?[0-9]+$/', $str); |
| } |
| |
| // -------------------------------------------------------------------- |
| |
| /** |
| * Is a Natural number (0,1,2,3, etc.) |
| * |
| * @access public |
| * @param string |
| * @return bool |
| */ |
| function is_natural($str) |
| { |
| return (bool)preg_match( '/^[0-9]+$/', $str); |
| } |
| |
| // -------------------------------------------------------------------- |
| |
| /** |
| * Is a Natural number, but not a zero (1,2,3, etc.) |
| * |
| * @access public |
| * @param string |
| * @return bool |
| */ |
| function is_natural_no_zero($str) |
| { |
| if ( ! preg_match( '/^[0-9]+$/', $str)) |
| { |
| return FALSE; |
| } |
| |
| if ($str == 0) |
| { |
| return FALSE; |
| } |
| |
| return TRUE; |
| } |
| |
| // -------------------------------------------------------------------- |
| |
| /** |
| * Valid Base64 |
| * |
| * Tests a string for characters outside of the Base64 alphabet |
| * as defined by RFC 2045 http://www.faqs.org/rfcs/rfc2045 |
| * |
| * @access public |
| * @param string |
| * @return bool |
| */ |
| function valid_base64($str) |
| { |
| return (bool) ! preg_match('/[^a-zA-Z0-9\/\+=]/', $str); |
| } |
| |
| // -------------------------------------------------------------------- |
| |
| /** |
| * Set Select |
| * |
| * Enables pull-down lists to be set to the value the user |
| * selected in the event of an error |
| * |
| * @access public |
| * @param string |
| * @param string |
| * @return string |
| */ |
| function set_select($field = '', $value = '') |
| { |
| if ($field == '' OR $value == '' OR ! isset($_POST[$field])) |
| { |
| return ''; |
| } |
| |
| if ($_POST[$field] == $value) |
| { |
| return ' selected="selected"'; |
| } |
| } |
| |
| // -------------------------------------------------------------------- |
| |
| /** |
| * Set Radio |
| * |
| * Enables radio buttons to be set to the value the user |
| * selected in the event of an error |
| * |
| * @access public |
| * @param string |
| * @param string |
| * @return string |
| */ |
| function set_radio($field = '', $value = '') |
| { |
| if ($field == '' OR $value == '' OR ! isset($_POST[$field])) |
| { |
| return ''; |
| } |
| |
| if ($_POST[$field] == $value) |
| { |
| return ' checked="checked"'; |
| } |
| } |
| |
| // -------------------------------------------------------------------- |
| |
| /** |
| * Set Checkbox |
| * |
| * Enables checkboxes to be set to the value the user |
| * selected in the event of an error |
| * |
| * @access public |
| * @param string |
| * @param string |
| * @return string |
| */ |
| function set_checkbox($field = '', $value = '') |
| { |
| if ($field == '' OR $value == '' OR ! isset($_POST[$field])) |
| { |
| return ''; |
| } |
| |
| if ($_POST[$field] == $value) |
| { |
| return ' checked="checked"'; |
| } |
| } |
| |
| // -------------------------------------------------------------------- |
| |
| /** |
| * Prep data for form |
| * |
| * This function allows HTML to be safely shown in a form. |
| * Special characters are converted. |
| * |
| * @access public |
| * @param string |
| * @return string |
| */ |
| function prep_for_form($data = '') |
| { |
| if (is_array($data)) |
| { |
| foreach ($data as $key => $val) |
| { |
| $data[$key] = $this->prep_for_form($val); |
| } |
| |
| return $data; |
| } |
| |
| if ($this->_safe_form_data == FALSE OR $data == '') |
| { |
| return $data; |
| } |
| |
| return str_replace(array("'", '"', '<', '>'), array("'", """, '<', '>'), stripslashes($data)); |
| } |
| |
| // -------------------------------------------------------------------- |
| |
| /** |
| * Prep URL |
| * |
| * @access public |
| * @param string |
| * @return string |
| */ |
| function prep_url($str = '') |
| { |
| if ($str == 'http://' OR $str == '') |
| { |
| $_POST[$this->_current_field] = ''; |
| return; |
| } |
| |
| if (substr($str, 0, 7) != 'http://' && substr($str, 0, 8) != 'https://') |
| { |
| $str = 'http://'.$str; |
| } |
| |
| $_POST[$this->_current_field] = $str; |
| } |
| |
| // -------------------------------------------------------------------- |
| |
| /** |
| * Strip Image Tags |
| * |
| * @access public |
| * @param string |
| * @return string |
| */ |
| function strip_image_tags($str) |
| { |
| $_POST[$this->_current_field] = $this->CI->input->strip_image_tags($str); |
| } |
| |
| // -------------------------------------------------------------------- |
| |
| /** |
| * XSS Clean |
| * |
| * @access public |
| * @param string |
| * @return string |
| */ |
| function xss_clean($str) |
| { |
| $_POST[$this->_current_field] = $this->CI->input->xss_clean($str); |
| } |
| |
| // -------------------------------------------------------------------- |
| |
| /** |
| * Convert PHP tags to entities |
| * |
| * @access public |
| * @param string |
| * @return string |
| */ |
| function encode_php_tags($str) |
| { |
| $_POST[$this->_current_field] = str_replace(array('<?php', '<?PHP', '<?', '?>'), array('<?php', '<?PHP', '<?', '?>'), $str); |
| } |
| |
| } |
| // END Validation Class |
| |
| /* End of file Validation.php */ |
| /* Location: ./system/libraries/Validation.php */ |