1592 lines
36 KiB
PHP
1592 lines
36 KiB
PHP
<?php
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/**
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* CodeIgniter
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*
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* An open source application development framework for PHP
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*
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* This content is released under the MIT License (MIT)
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*
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* Copyright (c) 2014 - 2019, British Columbia Institute of Technology
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*
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* Permission is hereby granted, free of charge, to any person obtaining a copy
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* of this software and associated documentation files (the "Software"), to deal
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* in the Software without restriction, including without limitation the rights
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* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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* copies of the Software, and to permit persons to whom the Software is
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* furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in
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* all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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* THE SOFTWARE.
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*
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* @package CodeIgniter
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* @author EllisLab Dev Team
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* @copyright Copyright (c) 2008 - 2014, EllisLab, Inc. (https://ellislab.com/)
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* @copyright Copyright (c) 2014 - 2019, British Columbia Institute of Technology (https://bcit.ca/)
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* @license https://opensource.org/licenses/MIT MIT License
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* @link https://codeigniter.com
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* @since Version 1.0.0
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* @filesource
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*/
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defined('BASEPATH') OR exit('No direct script access allowed');
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/**
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* Form Validation Class
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*
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* @package CodeIgniter
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* @subpackage Libraries
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* @category Validation
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* @author EllisLab Dev Team
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* @link https://codeigniter.com/user_guide/libraries/form_validation.html
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*/
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class CI_Form_validation {
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/**
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* Reference to the CodeIgniter instance
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*
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* @var object
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*/
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protected $CI;
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/**
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* Validation data for the current form submission
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*
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* @var array
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*/
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protected $_field_data = array();
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/**
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* Validation rules for the current form
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*
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* @var array
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*/
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protected $_config_rules = array();
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/**
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* Array of validation errors
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*
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* @var array
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*/
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protected $_error_array = array();
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/**
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* Array of custom error messages
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*
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* @var array
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*/
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protected $_error_messages = array();
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/**
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* Start tag for error wrapping
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*
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* @var string
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*/
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protected $_error_prefix = '<p>';
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/**
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* End tag for error wrapping
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*
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* @var string
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*/
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protected $_error_suffix = '</p>';
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/**
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* Custom error message
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*
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* @var string
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*/
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protected $error_string = '';
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/**
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* Whether the form data has been validated as safe
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*
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* @var bool
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*/
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protected $_safe_form_data = FALSE;
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/**
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* Custom data to validate
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*
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* @var array
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*/
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public $validation_data = array();
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/**
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* Initialize Form_Validation class
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*
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* @param array $rules
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* @return void
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*/
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public function __construct($rules = array())
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{
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$this->CI =& get_instance();
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// applies delimiters set in config file.
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if (isset($rules['error_prefix']))
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{
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$this->_error_prefix = $rules['error_prefix'];
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unset($rules['error_prefix']);
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}
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if (isset($rules['error_suffix']))
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{
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$this->_error_suffix = $rules['error_suffix'];
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unset($rules['error_suffix']);
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}
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// Validation rules can be stored in a config file.
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$this->_config_rules = $rules;
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// Automatically load the form helper
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$this->CI->load->helper('form');
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log_message('info', 'Form Validation Class Initialized');
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}
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// --------------------------------------------------------------------
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/**
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* Set Rules
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*
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* This function takes an array of field names and validation
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* rules as input, any custom error messages, validates the info,
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* and stores it
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*
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* @param mixed $field
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* @param string $label
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* @param mixed $rules
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* @param array $errors
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* @return CI_Form_validation
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*/
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public function set_rules($field, $label = '', $rules = array(), $errors = array())
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{
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// No reason to set rules if we have no POST data
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// or a validation array has not been specified
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if ($this->CI->input->method() !== 'post' && empty($this->validation_data))
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{
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return $this;
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}
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// If an array was passed via the first parameter instead of individual string
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// values we cycle through it and recursively call this function.
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if (is_array($field))
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{
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foreach ($field as $row)
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{
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// Houston, we have a problem...
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if ( ! isset($row['field'], $row['rules']))
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{
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continue;
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}
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// If the field label wasn't passed we use the field name
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$label = isset($row['label']) ? $row['label'] : $row['field'];
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// Add the custom error message array
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$errors = (isset($row['errors']) && is_array($row['errors'])) ? $row['errors'] : array();
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// Here we go!
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$this->set_rules($row['field'], $label, $row['rules'], $errors);
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}
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return $this;
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}
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// No fields or no rules? Nothing to do...
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if ( ! is_string($field) OR $field === '' OR empty($rules))
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{
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return $this;
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}
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elseif ( ! is_array($rules))
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{
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// BC: Convert pipe-separated rules string to an array
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if ( ! is_string($rules))
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{
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return $this;
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}
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$rules = preg_split('/\|(?![^\[]*\])/', $rules);
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}
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// If the field label wasn't passed we use the field name
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$label = ($label === '') ? $field : $label;
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$indexes = array();
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// Is the field name an array? If it is an array, we break it apart
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// into its components so that we can fetch the corresponding POST data later
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if (($is_array = (bool) preg_match_all('/\[(.*?)\]/', $field, $matches)) === TRUE)
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{
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sscanf($field, '%[^[][', $indexes[0]);
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for ($i = 0, $c = count($matches[0]); $i < $c; $i++)
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{
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if ($matches[1][$i] !== '')
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{
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$indexes[] = $matches[1][$i];
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}
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}
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}
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// Build our master array
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$this->_field_data[$field] = array(
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'field' => $field,
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'label' => $label,
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'rules' => $rules,
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'errors' => $errors,
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'is_array' => $is_array,
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'keys' => $indexes,
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'postdata' => NULL,
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'error' => ''
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);
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return $this;
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}
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// --------------------------------------------------------------------
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/**
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* By default, form validation uses the $_POST array to validate
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*
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* If an array is set through this method, then this array will
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* be used instead of the $_POST array
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*
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* Note that if you are validating multiple arrays, then the
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* reset_validation() function should be called after validating
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* each array due to the limitations of CI's singleton
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*
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* @param array $data
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* @return CI_Form_validation
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*/
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public function set_data(array $data)
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{
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if ( ! empty($data))
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{
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$this->validation_data = $data;
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}
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return $this;
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}
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// --------------------------------------------------------------------
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/**
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* Set Error Message
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*
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* Lets users set their own error messages on the fly. Note:
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* The key name has to match the function name that it corresponds to.
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*
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* @param array
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* @param string
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* @return CI_Form_validation
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*/
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public function set_message($lang, $val = '')
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{
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if ( ! is_array($lang))
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{
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$lang = array($lang => $val);
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}
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$this->_error_messages = array_merge($this->_error_messages, $lang);
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return $this;
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}
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// --------------------------------------------------------------------
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/**
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* Set The Error Delimiter
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*
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* Permits a prefix/suffix to be added to each error message
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*
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* @param string
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* @param string
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* @return CI_Form_validation
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*/
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public function set_error_delimiters($prefix = '<p>', $suffix = '</p>')
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{
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$this->_error_prefix = $prefix;
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$this->_error_suffix = $suffix;
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return $this;
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}
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// --------------------------------------------------------------------
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/**
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* Get Error Message
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*
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* Gets the error message associated with a particular field
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*
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* @param string $field Field name
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* @param string $prefix HTML start tag
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* @param string $suffix HTML end tag
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* @return string
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*/
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public function error($field, $prefix = '', $suffix = '')
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{
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if (empty($this->_field_data[$field]['error']))
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{
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return '';
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}
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if ($prefix === '')
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{
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$prefix = $this->_error_prefix;
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}
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if ($suffix === '')
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{
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$suffix = $this->_error_suffix;
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}
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return $prefix.$this->_field_data[$field]['error'].$suffix;
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}
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// --------------------------------------------------------------------
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/**
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* Get Array of Error Messages
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*
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* Returns the error messages as an array
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*
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* @return array
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*/
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public function error_array()
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{
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return $this->_error_array;
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}
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// --------------------------------------------------------------------
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/**
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* Error String
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*
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* Returns the error messages as a string, wrapped in the error delimiters
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*
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* @param string
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* @param string
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* @return string
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*/
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public function error_string($prefix = '', $suffix = '')
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{
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// No errors, validation passes!
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if (count($this->_error_array) === 0)
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{
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return '';
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}
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if ($prefix === '')
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{
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$prefix = $this->_error_prefix;
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}
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if ($suffix === '')
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{
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$suffix = $this->_error_suffix;
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}
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// Generate the error string
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$str = '';
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foreach ($this->_error_array as $val)
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{
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if ($val !== '')
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{
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$str .= $prefix.$val.$suffix."\n";
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}
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}
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return $str;
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}
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// --------------------------------------------------------------------
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/**
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* Run the Validator
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*
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* This function does all the work.
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*
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* @param string $group
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* @return bool
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*/
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public function run($group = '')
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{
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$validation_array = empty($this->validation_data)
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? $_POST
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: $this->validation_data;
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// Does the _field_data array containing the validation rules exist?
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// If not, we look to see if they were assigned via a config file
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if (count($this->_field_data) === 0)
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{
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// No validation rules? We're done...
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if (count($this->_config_rules) === 0)
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{
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return FALSE;
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}
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if (empty($group))
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{
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// Is there a validation rule for the particular URI being accessed?
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$group = trim($this->CI->uri->ruri_string(), '/');
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isset($this->_config_rules[$group]) OR $group = $this->CI->router->class.'/'.$this->CI->router->method;
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}
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$this->set_rules(isset($this->_config_rules[$group]) ? $this->_config_rules[$group] : $this->_config_rules);
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// Were we able to set the rules correctly?
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if (count($this->_field_data) === 0)
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{
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log_message('debug', 'Unable to find validation rules');
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return FALSE;
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}
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}
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// Load the language file containing error messages
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$this->CI->lang->load('form_validation');
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// Cycle through the rules for each field and match the corresponding $validation_data item
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foreach ($this->_field_data as $field => &$row)
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{
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// Fetch the data from the validation_data array item and cache it in the _field_data array.
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// Depending on whether the field name is an array or a string will determine where we get it from.
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if ($row['is_array'] === TRUE)
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{
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$this->_field_data[$field]['postdata'] = $this->_reduce_array($validation_array, $row['keys']);
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}
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elseif (isset($validation_array[$field]))
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{
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$this->_field_data[$field]['postdata'] = $validation_array[$field];
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}
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}
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// Execute validation rules
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// Note: A second foreach (for now) is required in order to avoid false-positives
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// for rules like 'matches', which correlate to other validation fields.
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foreach ($this->_field_data as $field => &$row)
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{
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// Don't try to validate if we have no rules set
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if (empty($row['rules']))
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{
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continue;
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}
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$this->_execute($row, $row['rules'], $row['postdata']);
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}
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// Did we end up with any errors?
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$total_errors = count($this->_error_array);
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if ($total_errors > 0)
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{
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$this->_safe_form_data = TRUE;
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}
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// Now we need to re-set the POST data with the new, processed data
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empty($this->validation_data) && $this->_reset_post_array();
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return ($total_errors === 0);
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}
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// --------------------------------------------------------------------
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/**
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* Prepare rules
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*
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* Re-orders the provided rules in order of importance, so that
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* they can easily be executed later without weird checks ...
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*
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* "Callbacks" are given the highest priority (always called),
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* followed by 'required' (called if callbacks didn't fail),
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* and then every next rule depends on the previous one passing.
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*
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* @param array $rules
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* @return array
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*/
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protected function _prepare_rules($rules)
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{
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$new_rules = array();
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$callbacks = array();
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foreach ($rules as &$rule)
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{
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// Let 'required' always be the first (non-callback) rule
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if ($rule === 'required')
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{
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array_unshift($new_rules, 'required');
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}
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// 'isset' is a kind of a weird alias for 'required' ...
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elseif ($rule === 'isset' && (empty($new_rules) OR $new_rules[0] !== 'required'))
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{
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array_unshift($new_rules, 'isset');
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}
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// The old/classic 'callback_'-prefixed rules
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elseif (is_string($rule) && strncmp('callback_', $rule, 9) === 0)
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{
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$callbacks[] = $rule;
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}
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// Proper callables
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elseif (is_callable($rule))
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{
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$callbacks[] = $rule;
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}
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// "Named" callables; i.e. array('name' => $callable)
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elseif (is_array($rule) && isset($rule[0], $rule[1]) && is_callable($rule[1]))
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{
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$callbacks[] = $rule;
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}
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// Everything else goes at the end of the queue
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else
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{
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$new_rules[] = $rule;
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}
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}
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return array_merge($callbacks, $new_rules);
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}
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// --------------------------------------------------------------------
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/**
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* Traverse a multidimensional $_POST array index until the data is found
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*
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* @param array
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* @param array
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* @param int
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* @return mixed
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*/
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protected function _reduce_array($array, $keys, $i = 0)
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{
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if (is_array($array) && isset($keys[$i]))
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{
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return isset($array[$keys[$i]]) ? $this->_reduce_array($array[$keys[$i]], $keys, ($i+1)) : NULL;
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}
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// NULL must be returned for empty fields
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return ($array === '') ? NULL : $array;
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}
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// --------------------------------------------------------------------
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/**
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* Re-populate the _POST array with our finalized and processed data
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*
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* @return void
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*/
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protected function _reset_post_array()
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{
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foreach ($this->_field_data as $field => $row)
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{
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if ($row['postdata'] !== NULL)
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{
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if ($row['is_array'] === FALSE)
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{
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isset($_POST[$field]) && $_POST[$field] = is_array($row['postdata']) ? NULL : $row['postdata'];
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}
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else
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{
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// start with a reference
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$post_ref =& $_POST;
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// before we assign values, make a reference to the right POST key
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if (count($row['keys']) === 1)
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{
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$post_ref =& $post_ref[current($row['keys'])];
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}
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else
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{
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foreach ($row['keys'] as $val)
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{
|
|
$post_ref =& $post_ref[$val];
|
|
}
|
|
}
|
|
|
|
$post_ref = $row['postdata'];
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
// --------------------------------------------------------------------
|
|
|
|
/**
|
|
* Executes the Validation routines
|
|
*
|
|
* @param array
|
|
* @param array
|
|
* @param mixed
|
|
* @param int
|
|
* @return mixed
|
|
*/
|
|
protected function _execute($row, $rules, $postdata = NULL, $cycles = 0)
|
|
{
|
|
// If the $_POST data is an array we will run a recursive call
|
|
//
|
|
// Note: We MUST check if the array is empty or not!
|
|
// Otherwise empty arrays will always pass validation.
|
|
if (is_array($postdata) && ! empty($postdata))
|
|
{
|
|
foreach ($postdata as $key => $val)
|
|
{
|
|
$this->_execute($row, $rules, $val, $key);
|
|
}
|
|
|
|
return;
|
|
}
|
|
|
|
$rules = $this->_prepare_rules($rules);
|
|
foreach ($rules as $rule)
|
|
{
|
|
$_in_array = FALSE;
|
|
|
|
// We set the $postdata variable with the current data in our master array so that
|
|
// each cycle of the loop is dealing with the processed data from the last cycle
|
|
if ($row['is_array'] === TRUE && is_array($this->_field_data[$row['field']]['postdata']))
|
|
{
|
|
// We shouldn't need this safety, but just in case there isn't an array index
|
|
// associated with this cycle we'll bail out
|
|
if ( ! isset($this->_field_data[$row['field']]['postdata'][$cycles]))
|
|
{
|
|
continue;
|
|
}
|
|
|
|
$postdata = $this->_field_data[$row['field']]['postdata'][$cycles];
|
|
$_in_array = TRUE;
|
|
}
|
|
else
|
|
{
|
|
// If we get an array field, but it's not expected - then it is most likely
|
|
// somebody messing with the form on the client side, so we'll just consider
|
|
// it an empty field
|
|
$postdata = is_array($this->_field_data[$row['field']]['postdata'])
|
|
? NULL
|
|
: $this->_field_data[$row['field']]['postdata'];
|
|
}
|
|
|
|
// Is the rule a callback?
|
|
$callback = $callable = FALSE;
|
|
if (is_string($rule))
|
|
{
|
|
if (strpos($rule, 'callback_') === 0)
|
|
{
|
|
$rule = substr($rule, 9);
|
|
$callback = TRUE;
|
|
}
|
|
}
|
|
elseif (is_callable($rule))
|
|
{
|
|
$callable = TRUE;
|
|
}
|
|
elseif (is_array($rule) && isset($rule[0], $rule[1]) && is_callable($rule[1]))
|
|
{
|
|
// We have a "named" callable, so save the name
|
|
$callable = $rule[0];
|
|
$rule = $rule[1];
|
|
}
|
|
|
|
// Strip the parameter (if exists) from the rule
|
|
// Rules can contain a parameter: max_length[5]
|
|
$param = FALSE;
|
|
if ( ! $callable && preg_match('/(.*?)\[(.*)\]/', $rule, $match))
|
|
{
|
|
$rule = $match[1];
|
|
$param = $match[2];
|
|
}
|
|
|
|
// Ignore empty, non-required inputs with a few exceptions ...
|
|
if (
|
|
($postdata === NULL OR $postdata === '')
|
|
&& $callback === FALSE
|
|
&& $callable === FALSE
|
|
&& ! in_array($rule, array('required', 'isset', 'matches'), TRUE)
|
|
)
|
|
{
|
|
continue;
|
|
}
|
|
|
|
// Call the function that corresponds to the rule
|
|
if ($callback OR $callable !== FALSE)
|
|
{
|
|
if ($callback)
|
|
{
|
|
if ( ! method_exists($this->CI, $rule))
|
|
{
|
|
log_message('debug', 'Unable to find callback validation rule: '.$rule);
|
|
$result = FALSE;
|
|
}
|
|
else
|
|
{
|
|
// Run the function and grab the result
|
|
$result = $this->CI->$rule($postdata, $param);
|
|
}
|
|
}
|
|
else
|
|
{
|
|
$result = is_array($rule)
|
|
? $rule[0]->{$rule[1]}($postdata)
|
|
: $rule($postdata);
|
|
|
|
// Is $callable set to a rule name?
|
|
if ($callable !== FALSE)
|
|
{
|
|
$rule = $callable;
|
|
}
|
|
}
|
|
|
|
// Re-assign the result to the master data array
|
|
if ($_in_array === TRUE)
|
|
{
|
|
$this->_field_data[$row['field']]['postdata'][$cycles] = is_bool($result) ? $postdata : $result;
|
|
}
|
|
else
|
|
{
|
|
$this->_field_data[$row['field']]['postdata'] = is_bool($result) ? $postdata : $result;
|
|
}
|
|
}
|
|
elseif ( ! method_exists($this, $rule))
|
|
{
|
|
// If our own wrapper function doesn't exist we see if a native PHP function does.
|
|
// Users can use any native PHP function call that has one param.
|
|
if (function_exists($rule))
|
|
{
|
|
// Native PHP functions issue warnings if you pass them more parameters than they use
|
|
$result = ($param !== FALSE) ? $rule($postdata, $param) : $rule($postdata);
|
|
|
|
if ($_in_array === TRUE)
|
|
{
|
|
$this->_field_data[$row['field']]['postdata'][$cycles] = is_bool($result) ? $postdata : $result;
|
|
}
|
|
else
|
|
{
|
|
$this->_field_data[$row['field']]['postdata'] = is_bool($result) ? $postdata : $result;
|
|
}
|
|
}
|
|
else
|
|
{
|
|
log_message('debug', 'Unable to find validation rule: '.$rule);
|
|
$result = FALSE;
|
|
}
|
|
}
|
|
else
|
|
{
|
|
$result = $this->$rule($postdata, $param);
|
|
|
|
if ($_in_array === TRUE)
|
|
{
|
|
$this->_field_data[$row['field']]['postdata'][$cycles] = is_bool($result) ? $postdata : $result;
|
|
}
|
|
else
|
|
{
|
|
$this->_field_data[$row['field']]['postdata'] = is_bool($result) ? $postdata : $result;
|
|
}
|
|
}
|
|
|
|
// Did the rule test negatively? If so, grab the error.
|
|
if ($result === FALSE)
|
|
{
|
|
// Callable rules might not have named error messages
|
|
if ( ! is_string($rule))
|
|
{
|
|
$line = $this->CI->lang->line('form_validation_error_message_not_set').'(Anonymous function)';
|
|
}
|
|
else
|
|
{
|
|
$line = $this->_get_error_message($rule, $row['field']);
|
|
}
|
|
|
|
// Is the parameter we are inserting into the error message the name
|
|
// of another field? If so we need to grab its "field label"
|
|
if (isset($this->_field_data[$param], $this->_field_data[$param]['label']))
|
|
{
|
|
$param = $this->_translate_fieldname($this->_field_data[$param]['label']);
|
|
}
|
|
|
|
// Build the error message
|
|
$message = $this->_build_error_msg($line, $this->_translate_fieldname($row['label']), $param);
|
|
|
|
// Save the error message
|
|
$this->_field_data[$row['field']]['error'] = $message;
|
|
|
|
if ( ! isset($this->_error_array[$row['field']]))
|
|
{
|
|
$this->_error_array[$row['field']] = $message;
|
|
}
|
|
|
|
return;
|
|
}
|
|
}
|
|
}
|
|
|
|
// --------------------------------------------------------------------
|
|
|
|
/**
|
|
* Get the error message for the rule
|
|
*
|
|
* @param string $rule The rule name
|
|
* @param string $field The field name
|
|
* @return string
|
|
*/
|
|
protected function _get_error_message($rule, $field)
|
|
{
|
|
// check if a custom message is defined through validation config row.
|
|
if (isset($this->_field_data[$field]['errors'][$rule]))
|
|
{
|
|
return $this->_field_data[$field]['errors'][$rule];
|
|
}
|
|
// check if a custom message has been set using the set_message() function
|
|
elseif (isset($this->_error_messages[$rule]))
|
|
{
|
|
return $this->_error_messages[$rule];
|
|
}
|
|
elseif (FALSE !== ($line = $this->CI->lang->line('form_validation_'.$rule)))
|
|
{
|
|
return $line;
|
|
}
|
|
// DEPRECATED support for non-prefixed keys, lang file again
|
|
elseif (FALSE !== ($line = $this->CI->lang->line($rule, FALSE)))
|
|
{
|
|
return $line;
|
|
}
|
|
|
|
return $this->CI->lang->line('form_validation_error_message_not_set').'('.$rule.')';
|
|
}
|
|
|
|
// --------------------------------------------------------------------
|
|
|
|
/**
|
|
* Translate a field name
|
|
*
|
|
* @param string the field name
|
|
* @return string
|
|
*/
|
|
protected function _translate_fieldname($fieldname)
|
|
{
|
|
// Do we need to translate the field name? We look for the prefix 'lang:' to determine this
|
|
// If we find one, but there's no translation for the string - just return it
|
|
if (sscanf($fieldname, 'lang:%s', $line) === 1 && FALSE === ($fieldname = $this->CI->lang->line($line, FALSE)))
|
|
{
|
|
return $line;
|
|
}
|
|
|
|
return $fieldname;
|
|
}
|
|
|
|
// --------------------------------------------------------------------
|
|
|
|
/**
|
|
* Build an error message using the field and param.
|
|
*
|
|
* @param string The error message line
|
|
* @param string A field's human name
|
|
* @param mixed A rule's optional parameter
|
|
* @return string
|
|
*/
|
|
protected function _build_error_msg($line, $field = '', $param = '')
|
|
{
|
|
// Check for %s in the string for legacy support.
|
|
if (strpos($line, '%s') !== FALSE)
|
|
{
|
|
return sprintf($line, $field, $param);
|
|
}
|
|
|
|
return str_replace(array('{field}', '{param}'), array($field, $param), $line);
|
|
}
|
|
|
|
// --------------------------------------------------------------------
|
|
|
|
/**
|
|
* Checks if the rule is present within the validator
|
|
*
|
|
* Permits you to check if a rule is present within the validator
|
|
*
|
|
* @param string the field name
|
|
* @return bool
|
|
*/
|
|
public function has_rule($field)
|
|
{
|
|
return isset($this->_field_data[$field]);
|
|
}
|
|
|
|
// --------------------------------------------------------------------
|
|
|
|
/**
|
|
* Get the value from a form
|
|
*
|
|
* Permits you to repopulate a form field with the value it was submitted
|
|
* with, or, if that value doesn't exist, with the default
|
|
*
|
|
* @param string the field name
|
|
* @param string
|
|
* @return string
|
|
*/
|
|
public function set_value($field = '', $default = '')
|
|
{
|
|
if ( ! isset($this->_field_data[$field], $this->_field_data[$field]['postdata']))
|
|
{
|
|
return $default;
|
|
}
|
|
|
|
// If the data is an array output them one at a time.
|
|
// E.g: form_input('name[]', set_value('name[]');
|
|
if (is_array($this->_field_data[$field]['postdata']))
|
|
{
|
|
return array_shift($this->_field_data[$field]['postdata']);
|
|
}
|
|
|
|
return $this->_field_data[$field]['postdata'];
|
|
}
|
|
|
|
// --------------------------------------------------------------------
|
|
|
|
/**
|
|
* Set Select
|
|
*
|
|
* Enables pull-down lists to be set to the value the user
|
|
* selected in the event of an error
|
|
*
|
|
* @param string
|
|
* @param string
|
|
* @param bool
|
|
* @return string
|
|
*/
|
|
public function set_select($field = '', $value = '', $default = FALSE)
|
|
{
|
|
if ( ! isset($this->_field_data[$field], $this->_field_data[$field]['postdata']))
|
|
{
|
|
return ($default === TRUE && count($this->_field_data) === 0) ? ' selected="selected"' : '';
|
|
}
|
|
|
|
$field = $this->_field_data[$field]['postdata'];
|
|
$value = (string) $value;
|
|
if (is_array($field))
|
|
{
|
|
// Note: in_array('', array(0)) returns TRUE, do not use it
|
|
foreach ($field as &$v)
|
|
{
|
|
if ($value === $v)
|
|
{
|
|
return ' selected="selected"';
|
|
}
|
|
}
|
|
|
|
return '';
|
|
}
|
|
elseif (($field === '' OR $value === '') OR ($field !== $value))
|
|
{
|
|
return '';
|
|
}
|
|
|
|
return ' selected="selected"';
|
|
}
|
|
|
|
// --------------------------------------------------------------------
|
|
|
|
/**
|
|
* Set Radio
|
|
*
|
|
* Enables radio buttons to be set to the value the user
|
|
* selected in the event of an error
|
|
*
|
|
* @param string
|
|
* @param string
|
|
* @param bool
|
|
* @return string
|
|
*/
|
|
public function set_radio($field = '', $value = '', $default = FALSE)
|
|
{
|
|
if ( ! isset($this->_field_data[$field], $this->_field_data[$field]['postdata']))
|
|
{
|
|
return ($default === TRUE && count($this->_field_data) === 0) ? ' checked="checked"' : '';
|
|
}
|
|
|
|
$field = $this->_field_data[$field]['postdata'];
|
|
$value = (string) $value;
|
|
if (is_array($field))
|
|
{
|
|
// Note: in_array('', array(0)) returns TRUE, do not use it
|
|
foreach ($field as &$v)
|
|
{
|
|
if ($value === $v)
|
|
{
|
|
return ' checked="checked"';
|
|
}
|
|
}
|
|
|
|
return '';
|
|
}
|
|
elseif (($field === '' OR $value === '') OR ($field !== $value))
|
|
{
|
|
return '';
|
|
}
|
|
|
|
return ' checked="checked"';
|
|
}
|
|
|
|
// --------------------------------------------------------------------
|
|
|
|
/**
|
|
* Set Checkbox
|
|
*
|
|
* Enables checkboxes to be set to the value the user
|
|
* selected in the event of an error
|
|
*
|
|
* @param string
|
|
* @param string
|
|
* @param bool
|
|
* @return string
|
|
*/
|
|
public function set_checkbox($field = '', $value = '', $default = FALSE)
|
|
{
|
|
// Logic is exactly the same as for radio fields
|
|
return $this->set_radio($field, $value, $default);
|
|
}
|
|
|
|
// --------------------------------------------------------------------
|
|
|
|
/**
|
|
* Required
|
|
*
|
|
* @param string
|
|
* @return bool
|
|
*/
|
|
public function required($str)
|
|
{
|
|
return is_array($str)
|
|
? (empty($str) === FALSE)
|
|
: (trim($str) !== '');
|
|
}
|
|
|
|
// --------------------------------------------------------------------
|
|
|
|
/**
|
|
* Performs a Regular Expression match test.
|
|
*
|
|
* @param string
|
|
* @param string regex
|
|
* @return bool
|
|
*/
|
|
public function regex_match($str, $regex)
|
|
{
|
|
return (bool) preg_match($regex, $str);
|
|
}
|
|
|
|
// --------------------------------------------------------------------
|
|
|
|
/**
|
|
* Match one field to another
|
|
*
|
|
* @param string $str string to compare against
|
|
* @param string $field
|
|
* @return bool
|
|
*/
|
|
public function matches($str, $field)
|
|
{
|
|
return isset($this->_field_data[$field], $this->_field_data[$field]['postdata'])
|
|
? ($str === $this->_field_data[$field]['postdata'])
|
|
: FALSE;
|
|
}
|
|
|
|
// --------------------------------------------------------------------
|
|
|
|
/**
|
|
* Differs from another field
|
|
*
|
|
* @param string
|
|
* @param string field
|
|
* @return bool
|
|
*/
|
|
public function differs($str, $field)
|
|
{
|
|
return ! (isset($this->_field_data[$field]) && $this->_field_data[$field]['postdata'] === $str);
|
|
}
|
|
|
|
// --------------------------------------------------------------------
|
|
|
|
/**
|
|
* Is Unique
|
|
*
|
|
* Check if the input value doesn't already exist
|
|
* in the specified database field.
|
|
*
|
|
* @param string $str
|
|
* @param string $field
|
|
* @return bool
|
|
*/
|
|
public function is_unique($str, $field)
|
|
{
|
|
sscanf($field, '%[^.].%[^.]', $table, $field);
|
|
return isset($this->CI->db)
|
|
? ($this->CI->db->limit(1)->get_where($table, array($field => $str))->num_rows() === 0)
|
|
: FALSE;
|
|
}
|
|
|
|
// --------------------------------------------------------------------
|
|
|
|
/**
|
|
* Minimum Length
|
|
*
|
|
* @param string
|
|
* @param string
|
|
* @return bool
|
|
*/
|
|
public function min_length($str, $val)
|
|
{
|
|
if ( ! is_numeric($val))
|
|
{
|
|
return FALSE;
|
|
}
|
|
|
|
return ($val <= mb_strlen($str));
|
|
}
|
|
|
|
// --------------------------------------------------------------------
|
|
|
|
/**
|
|
* Max Length
|
|
*
|
|
* @param string
|
|
* @param string
|
|
* @return bool
|
|
*/
|
|
public function max_length($str, $val)
|
|
{
|
|
if ( ! is_numeric($val))
|
|
{
|
|
return FALSE;
|
|
}
|
|
|
|
return ($val >= mb_strlen($str));
|
|
}
|
|
|
|
// --------------------------------------------------------------------
|
|
|
|
/**
|
|
* Exact Length
|
|
*
|
|
* @param string
|
|
* @param string
|
|
* @return bool
|
|
*/
|
|
public function exact_length($str, $val)
|
|
{
|
|
if ( ! is_numeric($val))
|
|
{
|
|
return FALSE;
|
|
}
|
|
|
|
return (mb_strlen($str) === (int) $val);
|
|
}
|
|
|
|
// --------------------------------------------------------------------
|
|
|
|
/**
|
|
* Valid URL
|
|
*
|
|
* @param string $str
|
|
* @return bool
|
|
*/
|
|
public function valid_url($str)
|
|
{
|
|
if (empty($str))
|
|
{
|
|
return FALSE;
|
|
}
|
|
elseif (preg_match('/^(?:([^:]*)\:)?\/\/(.+)$/', $str, $matches))
|
|
{
|
|
if (empty($matches[2]))
|
|
{
|
|
return FALSE;
|
|
}
|
|
elseif ( ! in_array(strtolower($matches[1]), array('http', 'https'), TRUE))
|
|
{
|
|
return FALSE;
|
|
}
|
|
|
|
$str = $matches[2];
|
|
}
|
|
|
|
// PHP 7 accepts IPv6 addresses within square brackets as hostnames,
|
|
// but it appears that the PR that came in with https://bugs.php.net/bug.php?id=68039
|
|
// was never merged into a PHP 5 branch ... https://3v4l.org/8PsSN
|
|
if (preg_match('/^\[([^\]]+)\]/', $str, $matches) && ! is_php('7') && filter_var($matches[1], FILTER_VALIDATE_IP, FILTER_FLAG_IPV6) !== FALSE)
|
|
{
|
|
$str = 'ipv6.host'.substr($str, strlen($matches[1]) + 2);
|
|
}
|
|
|
|
return (filter_var('http://'.$str, FILTER_VALIDATE_URL) !== FALSE);
|
|
}
|
|
|
|
// --------------------------------------------------------------------
|
|
|
|
/**
|
|
* Valid Email
|
|
*
|
|
* @param string
|
|
* @return bool
|
|
*/
|
|
public function valid_email($str)
|
|
{
|
|
if (function_exists('idn_to_ascii') && preg_match('#\A([^@]+)@(.+)\z#', $str, $matches))
|
|
{
|
|
$domain = defined('INTL_IDNA_VARIANT_UTS46')
|
|
? idn_to_ascii($matches[2], 0, INTL_IDNA_VARIANT_UTS46)
|
|
: idn_to_ascii($matches[2]);
|
|
|
|
if ($domain !== FALSE)
|
|
{
|
|
$str = $matches[1].'@'.$domain;
|
|
}
|
|
}
|
|
|
|
return (bool) filter_var($str, FILTER_VALIDATE_EMAIL);
|
|
}
|
|
|
|
// --------------------------------------------------------------------
|
|
|
|
/**
|
|
* Valid Emails
|
|
*
|
|
* @param string
|
|
* @return bool
|
|
*/
|
|
public function valid_emails($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
|
|
*
|
|
* @param string
|
|
* @param string 'ipv4' or 'ipv6' to validate a specific IP format
|
|
* @return bool
|
|
*/
|
|
public function valid_ip($ip, $which = '')
|
|
{
|
|
return $this->CI->input->valid_ip($ip, $which);
|
|
}
|
|
|
|
// --------------------------------------------------------------------
|
|
|
|
/**
|
|
* Alpha
|
|
*
|
|
* @param string
|
|
* @return bool
|
|
*/
|
|
public function alpha($str)
|
|
{
|
|
return ctype_alpha($str);
|
|
}
|
|
|
|
// --------------------------------------------------------------------
|
|
|
|
/**
|
|
* Alpha-numeric
|
|
*
|
|
* @param string
|
|
* @return bool
|
|
*/
|
|
public function alpha_numeric($str)
|
|
{
|
|
return ctype_alnum((string) $str);
|
|
}
|
|
|
|
// --------------------------------------------------------------------
|
|
|
|
/**
|
|
* Alpha-numeric w/ spaces
|
|
*
|
|
* @param string
|
|
* @return bool
|
|
*/
|
|
public function alpha_numeric_spaces($str)
|
|
{
|
|
return (bool) preg_match('/^[A-Z0-9 ]+$/i', $str);
|
|
}
|
|
|
|
// --------------------------------------------------------------------
|
|
|
|
/**
|
|
* Alpha-numeric with underscores and dashes
|
|
*
|
|
* @param string
|
|
* @return bool
|
|
*/
|
|
public function alpha_dash($str)
|
|
{
|
|
return (bool) preg_match('/^[a-z0-9_-]+$/i', $str);
|
|
}
|
|
|
|
// --------------------------------------------------------------------
|
|
|
|
/**
|
|
* Numeric
|
|
*
|
|
* @param string
|
|
* @return bool
|
|
*/
|
|
public function numeric($str)
|
|
{
|
|
return (bool) preg_match('/^[\-+]?[0-9]*\.?[0-9]+$/', $str);
|
|
|
|
}
|
|
|
|
// --------------------------------------------------------------------
|
|
|
|
/**
|
|
* Integer
|
|
*
|
|
* @param string
|
|
* @return bool
|
|
*/
|
|
public function integer($str)
|
|
{
|
|
return (bool) preg_match('/^[\-+]?[0-9]+$/', $str);
|
|
}
|
|
|
|
// --------------------------------------------------------------------
|
|
|
|
/**
|
|
* Decimal number
|
|
*
|
|
* @param string
|
|
* @return bool
|
|
*/
|
|
public function decimal($str)
|
|
{
|
|
return (bool) preg_match('/^[\-+]?[0-9]+\.[0-9]+$/', $str);
|
|
}
|
|
|
|
// --------------------------------------------------------------------
|
|
|
|
/**
|
|
* Greater than
|
|
*
|
|
* @param string
|
|
* @param int
|
|
* @return bool
|
|
*/
|
|
public function greater_than($str, $min)
|
|
{
|
|
return is_numeric($str) ? ($str > $min) : FALSE;
|
|
}
|
|
|
|
// --------------------------------------------------------------------
|
|
|
|
/**
|
|
* Equal to or Greater than
|
|
*
|
|
* @param string
|
|
* @param int
|
|
* @return bool
|
|
*/
|
|
public function greater_than_equal_to($str, $min)
|
|
{
|
|
return is_numeric($str) ? ($str >= $min) : FALSE;
|
|
}
|
|
|
|
// --------------------------------------------------------------------
|
|
|
|
/**
|
|
* Less than
|
|
*
|
|
* @param string
|
|
* @param int
|
|
* @return bool
|
|
*/
|
|
public function less_than($str, $max)
|
|
{
|
|
return is_numeric($str) ? ($str < $max) : FALSE;
|
|
}
|
|
|
|
// --------------------------------------------------------------------
|
|
|
|
/**
|
|
* Equal to or Less than
|
|
*
|
|
* @param string
|
|
* @param int
|
|
* @return bool
|
|
*/
|
|
public function less_than_equal_to($str, $max)
|
|
{
|
|
return is_numeric($str) ? ($str <= $max) : FALSE;
|
|
}
|
|
|
|
// --------------------------------------------------------------------
|
|
|
|
/**
|
|
* Value should be within an array of values
|
|
*
|
|
* @param string
|
|
* @param string
|
|
* @return bool
|
|
*/
|
|
public function in_list($value, $list)
|
|
{
|
|
return in_array($value, explode(',', $list), TRUE);
|
|
}
|
|
|
|
// --------------------------------------------------------------------
|
|
|
|
/**
|
|
* Is a Natural number (0,1,2,3, etc.)
|
|
*
|
|
* @param string
|
|
* @return bool
|
|
*/
|
|
public function is_natural($str)
|
|
{
|
|
return ctype_digit((string) $str);
|
|
}
|
|
|
|
// --------------------------------------------------------------------
|
|
|
|
/**
|
|
* Is a Natural number, but not a zero (1,2,3, etc.)
|
|
*
|
|
* @param string
|
|
* @return bool
|
|
*/
|
|
public function is_natural_no_zero($str)
|
|
{
|
|
return ($str != 0 && ctype_digit((string) $str));
|
|
}
|
|
|
|
// --------------------------------------------------------------------
|
|
|
|
/**
|
|
* Valid Base64
|
|
*
|
|
* Tests a string for characters outside of the Base64 alphabet
|
|
* as defined by RFC 2045 http://www.faqs.org/rfcs/rfc2045
|
|
*
|
|
* @param string
|
|
* @return bool
|
|
*/
|
|
public function valid_base64($str)
|
|
{
|
|
return (base64_encode(base64_decode($str)) === $str);
|
|
}
|
|
|
|
// --------------------------------------------------------------------
|
|
|
|
/**
|
|
* Prep data for form
|
|
*
|
|
* This function allows HTML to be safely shown in a form.
|
|
* Special characters are converted.
|
|
*
|
|
* @deprecated 3.0.6 Not used anywhere within the framework and pretty much useless
|
|
* @param mixed $data Input data
|
|
* @return mixed
|
|
*/
|
|
public function prep_for_form($data)
|
|
{
|
|
if ($this->_safe_form_data === FALSE OR empty($data))
|
|
{
|
|
return $data;
|
|
}
|
|
|
|
if (is_array($data))
|
|
{
|
|
foreach ($data as $key => $val)
|
|
{
|
|
$data[$key] = $this->prep_for_form($val);
|
|
}
|
|
|
|
return $data;
|
|
}
|
|
|
|
return str_replace(array("'", '"', '<', '>'), array(''', '"', '<', '>'), stripslashes($data));
|
|
}
|
|
|
|
// --------------------------------------------------------------------
|
|
|
|
/**
|
|
* Prep URL
|
|
*
|
|
* @param string
|
|
* @return string
|
|
*/
|
|
public function prep_url($str = '')
|
|
{
|
|
if ($str === 'http://' OR $str === '')
|
|
{
|
|
return '';
|
|
}
|
|
|
|
if (strpos($str, 'http://') !== 0 && strpos($str, 'https://') !== 0)
|
|
{
|
|
return 'http://'.$str;
|
|
}
|
|
|
|
return $str;
|
|
}
|
|
|
|
// --------------------------------------------------------------------
|
|
|
|
/**
|
|
* Strip Image Tags
|
|
*
|
|
* @param string
|
|
* @return string
|
|
*/
|
|
public function strip_image_tags($str)
|
|
{
|
|
return $this->CI->security->strip_image_tags($str);
|
|
}
|
|
|
|
// --------------------------------------------------------------------
|
|
|
|
/**
|
|
* Convert PHP tags to entities
|
|
*
|
|
* @param string
|
|
* @return string
|
|
*/
|
|
public function encode_php_tags($str)
|
|
{
|
|
return str_replace(array('<?', '?>'), array('<?', '?>'), $str);
|
|
}
|
|
|
|
// --------------------------------------------------------------------
|
|
|
|
/**
|
|
* Reset validation vars
|
|
*
|
|
* Prevents subsequent validation routines from being affected by the
|
|
* results of any previous validation routine due to the CI singleton.
|
|
*
|
|
* @return CI_Form_validation
|
|
*/
|
|
public function reset_validation()
|
|
{
|
|
$this->_field_data = array();
|
|
$this->_error_array = array();
|
|
$this->_error_messages = array();
|
|
$this->error_string = '';
|
|
return $this;
|
|
}
|
|
|
|
}
|