| <?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) 2006, 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(); | |
| 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($str)); | |
| } | |
| } | |
| // -------------------------------------------------------------------- | |
| /** | |
| * Match one field to another | |
| * | |
| * @access public | |
| * @param string | |
| * @return bool | |
| */ | |
| function matches($str, $field) | |
| { | |
| if (! isset($_POST[$field])) | |
| { | |
| return FALSE; | |
| } | |
| return ($str !== $_POST[$field]) ? FALSE : TRUE; | |
| } | |
| // -------------------------------------------------------------------- | |
| /** | |
| * Minimum Length | |
| * | |
| * @access public | |
| * @param string | |
| * @return bool | |
| */ | |
| function min_length($str, $val) | |
| { | |
| if (preg_match("/[^0-9]/", $val)) | |
| { | |
| return FALSE; | |
| } | |
| return (strlen($str) < $val) ? FALSE : TRUE; | |
| } | |
| // -------------------------------------------------------------------- | |
| /** | |
| * Max Length | |
| * | |
| * @access public | |
| * @param string | |
| * @return bool | |
| */ | |
| function max_length($str, $val) | |
| { | |
| if (preg_match("/[^0-9]/", $val)) | |
| { | |
| return FALSE; | |
| } | |
| return (strlen($str) > $val) ? FALSE : TRUE; | |
| } | |
| // -------------------------------------------------------------------- | |
| /** | |
| * Exact Length | |
| * | |
| * @access public | |
| * @param string | |
| * @return bool | |
| */ | |
| function exact_length($str, $val) | |
| { | |
| if (preg_match("/[^0-9]/", $val)) | |
| { | |
| return FALSE; | |
| } | |
| return (strlen($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]+$/', $str); | |
| } | |
| // -------------------------------------------------------------------- | |
| /** | |
| * Valid Base64 | |
| * | |
| * Tests a string for characters outside of the Base64 alphabet | |
| * as defined by RFC 2045 http://www.faqs.org/rfcs/rfc2045 | |
| * | |
| * @access public | |
| * @param string | |
| * @return bool | |
| */ | |
| function valid_base64($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); | |
| } | |
| } | |
| 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 | |
| ?> |