validate.class.php

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<?php
/* Copyright (C) 2021 John BOTELLA <john.botella@atm-consulting.fr>
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 3 of the License, or
 * any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program. If not, see <https://www.gnu.org/licenses/>.
 */
 
class Validate
{
  public $db;
 
  public $outputLang;
 
  public $error;
 
 
  public function __construct($db, $outputLang = null)
  {
    global $langs;
 
    if (empty($outputLang)) {
      $this->outputLang = $langs;
    } else {
      $this->outputLang = $outputLang;
    }
 
    if (!is_object($this->outputLang) || !method_exists($this->outputLang, 'load')) {
      return;
    }
 
    $this->outputLang->loadLangs(array('validate', 'errors'));
 
    $this->db = $db;
  }
 
  protected function clear()
  {
    $this->error = '';
  }
 
  protected function setError($errMsg)
  {
    $this->error = $errMsg;
  }
 
  public function isEmail($email, $maxLength = false)
  {
    if (!filter_var($email, FILTER_VALIDATE_EMAIL)) {
      $this->error = $this->outputLang->trans('RequireValidEmail');
      return false;
    }
    return true;
  }
 
  public function isPrice($price)
  {
    if (!preg_match('/^[0-9]{1,10}(\.[0-9]{1,9})?$/ui', $price)) {
      $this->error = $this->outputLang->trans('RequireValidValue');
      return false;
    }
    return true;
  }
 
  public function isTimestamp($stamp)
  {
    if (!is_numeric($stamp) && (int) $stamp == $stamp) {
      $this->error = $this->outputLang->trans('RequireValidDate');
      return false;
    }
    return true;
  }
 
  public function isPhone($phone)
  {
    if (!preg_match('/^[+0-9. ()-]*$/ui', $phone)) {
      $this->error = $this->outputLang->trans('RequireValidPhone');
      return false;
    }
    return true;
  }
 
  public function isMaxLength($string, $length)
  {
    if (strlen($string) > $length) {
      $this->error = $this->outputLang->trans('RequireMaxLength', $length);
      return false;
    }
    return true;
  }
 
  public function isNotEmptyString($string)
  {
    if (!strlen($string)) {
      $this->error = $this->outputLang->trans('RequireANotEmptyValue');
      return false;
    }
    return true;
  }
 
  public function isMinLength($string, $length)
  {
    if (strlen($string) < $length) {
      $this->error = $this->outputLang->trans('RequireMinLength', $length);
      return false;
    }
    return true;
  }
 
  public function isUrl($url)
  {
    if (!filter_var($url, FILTER_VALIDATE_URL)) {
      $this->error = $this->outputLang->trans('RequireValidUrl');
      return false;
    }
    return true;
  }
 
  public function isDuration($duration)
  {
    if (!is_int($duration) && $duration >= 0) {
      $this->error = $this->outputLang->trans('RequireValidDuration');
      return false;
    }
    return true;
  }
 
  public function isNumeric($string)
  {
    if (!is_numeric($string)) {
      $this->error = $this->outputLang->trans('RequireValidNumeric');
      return false;
    }
    return true;
  }
 
  public function isBool($bool)
  {
    if (!(is_null($bool) || is_bool($bool) || preg_match('/^[0|1]{1}$/ui', $bool))) {
      $this->error = $this->outputLang->trans('RequireValidBool');
      return false;
    }
    return true;
  }
 
  public function isInDb($values, $table, $col)
  {
    if (!is_array($values)) {
      $value_arr = array($values);
    } else {
      $value_arr = $values;
    }
 
    if (!count($value_arr)) {
      $this->error = $this->outputLang->trans('RequireValue');
      return false;
    }
 
    foreach ($value_arr as $val) {
      $sql = "SELECT ".$col." FROM ".$this->db->prefix().$table." WHERE ".$col." = '".$this->db->escape($val)."' LIMIT 1"; // more quick than count(*) to check existing of a row
      $resql = $this->db->query($sql);
      if ($resql) {
        $obj = $this->db->fetch_object($resql);
        if ($obj) {
          continue;
        }
      }
      // If something was wrong
      $this->error = $this->outputLang->trans('RequireValidExistingElement');
      return false;
    }
 
    return true;
  }
 
  public function isFetchable($id, $classname, $classpath)
  {
    if (!empty($classpath)) {
      if (dol_include_once($classpath)) {
        if ($classname && class_exists($classname)) {
          $object = new $classname($this->db);
 
          if (!is_callable(array($object, 'fetch')) || !is_callable(array($object, 'isExistingObject'))) {
            $this->error = $this->outputLang->trans('BadSetupOfFieldFetchNotCallable');
            return false;
          }
 
          if (!empty($object->table_element) && $object->isExistingObject($object->table_element, $id)) {
            return true;
          } else {
            $this->error = $this->outputLang->trans('RequireValidExistingElement');
          }
        } else {
          $this->error = $this->outputLang->trans('BadSetupOfFieldClassNotFoundForValidation');
        }
      } else {
        $this->error = $this->outputLang->trans('BadSetupOfFieldFileNotFound');
      }
    } else {
      $this->error = $this->outputLang->trans('BadSetupOfField');
    }
    return false;
  }
 
  public function isFetchableElement($id, $element_type)
  {
    // TODO use newObjectByElement() introduce in V20 by PR #30036 for better errors management
    $elementProperty = getElementProperties($element_type);
    return $this->isFetchable($id, $elementProperty['classname'], $elementProperty['classpath'].'/'.$elementProperty['classfile'].'.class.php');
  }
}