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<?php
/**
* ---------------------------------------------------------------------
*
* GLPI - Gestionnaire Libre de Parc Informatique
*
* http://glpi-project.org
*
* @copyright 2015-2023 Teclib' and contributors.
* @copyright 2003-2014 by the INDEPNET Development Team.
* @licence https://www.gnu.org/licenses/gpl-3.0.html
*
* ---------------------------------------------------------------------
*
* LICENSE
*
* This file is part of GLPI.
*
* 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
* (at your option) 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/>.
*
* ---------------------------------------------------------------------
*/
use Glpi\Toolbox\Sanitizer;
/// Criteria Rule class
class RuleCriteria extends CommonDBChild
{
// From CommonDBChild
public static $itemtype = 'Rule';
public static $items_id = 'rules_id';
public $dohistory = true;
public $auto_message_on_action = false;
/**
* @since 0.84
**/
public function getForbiddenStandardMassiveAction()
{
$forbidden = parent::getForbiddenStandardMassiveAction();
$forbidden[] = 'update';
return $forbidden;
}
/**
* @param $rule_type (default 'Rule)
**/
public function __construct($rule_type = 'Rule')
{
static::$itemtype = $rule_type;
}
/**
* @since 0.84.3
*
* @see CommonDBTM::post_getFromDB()
*/
public function post_getFromDB()
{
// Get correct itemtype if defult one is used
if (static::$itemtype == 'Rule') {
$rule = new Rule();
if ($rule->getFromDB($this->fields['rules_id'])) {
static::$itemtype = $rule->fields['sub_type'];
}
}
}
/**
* Get title used in rule
*
* @param $nb integer for singular or plural (default 0)
*
* @return Title of the rule
**/
public static function getTypeName($nb = 0)
{
return _n('Criterion', 'Criteria', $nb);
}
protected function computeFriendlyName()
{
if ($rule = getItemForItemtype(static::$itemtype)) {
$criteria_row = $rule->getMinimalCriteriaText($this->fields);
$criteria_text = trim(preg_replace(['/<td[^>]*>/', '/<\/td>/'], [' ', ''], $criteria_row));
return $criteria_text;
}
return '';
}
/**
* @since 0.84
*
* @see CommonDBChild::post_addItem()
**/
public function post_addItem()
{
parent::post_addItem();
if (
isset($this->input['rules_id'])
&& ($realrule = Rule::getRuleObjectByID($this->input['rules_id']))
) {
$realrule->update(['id' => $this->input['rules_id'],
'date_mod' => $_SESSION['glpi_currenttime']
]);
}
}
/**
* @since 0.84
*
* @see CommonDBTM::post_purgeItem()
**/
public function post_purgeItem()
{
parent::post_purgeItem();
if (
isset($this->fields['rules_id'])
&& ($realrule = Rule::getRuleObjectByID($this->fields['rules_id']))
) {
$realrule->update(['id' => $this->fields['rules_id'],
'date_mod' => $_SESSION['glpi_currenttime']
]);
}
}
/**
* @since 0.84
**/
public function prepareInputForAdd($input)
{
if (!isset($input['criteria']) || empty($input['criteria'])) {
return false;
}
return parent::prepareInputForAdd($input);
}
public function rawSearchOptions()
{
$tab = [];
$tab[] = [
'id' => '1',
'table' => $this->getTable(),
'field' => 'criteria',
'name' => __('Name'),
'massiveaction' => false,
'datatype' => 'specific',
'additionalfields' => ['rules_id']
];
$tab[] = [
'id' => '2',
'table' => $this->getTable(),
'field' => 'condition',
'name' => __('Condition'),
'massiveaction' => false,
'datatype' => 'specific',
'additionalfields' => ['rules_id', 'criteria']
];
$tab[] = [
'id' => '3',
'table' => $this->getTable(),
'field' => 'pattern',
'name' => __('Reason'),
'massiveaction' => false,
'datatype' => 'specific',
'additionalfields' => ['rules_id', 'criteria', 'condition'],
];
return $tab;
}
/**
* @since 0.84
*
* @param $field
* @param $values
* @param $options array
**/
public static function getSpecificValueToDisplay($field, $values, array $options = [])
{
if (!is_array($values)) {
$values = [$field => $values];
}
switch ($field) {
case 'criteria':
$generic_rule = new Rule();
if (
isset($values['rules_id'])
&& !empty($values['rules_id'])
&& $generic_rule->getFromDB($values['rules_id'])
) {
if ($rule = getItemForItemtype($generic_rule->fields["sub_type"])) {
return $rule->getCriteriaName($values[$field]);
}
}
break;
case 'condition':
$generic_rule = new Rule();
if (
isset($values['rules_id'])
&& !empty($values['rules_id'])
&& $generic_rule->getFromDB($values['rules_id'])
) {
$criterion = '';
if (isset($values['criteria']) && !empty($values['criteria'])) {
$criterion = $values['criteria'];
}
return self::getConditionByID($values[$field], $generic_rule->fields["sub_type"], $criterion);
}
break;
case 'pattern':
if (!isset($values["criteria"]) || !isset($values["condition"])) {
return NOT_AVAILABLE;
}
$generic_rule = new Rule();
if (
isset($values['rules_id'])
&& !empty($values['rules_id'])
&& $generic_rule->getFromDB($values['rules_id'])
) {
if ($rule = getItemForItemtype($generic_rule->fields["sub_type"])) {
return $rule->getCriteriaDisplayPattern(
$values["criteria"],
$values["condition"],
$values[$field]
);
}
}
break;
}
return parent::getSpecificValueToDisplay($field, $values, $options);
}
/**
* @since 0.84
*
* @param $field
* @param $name (default '')
* @param $values (default '')
* @param $options array
**/
public static function getSpecificValueToSelect($field, $name = '', $values = '', array $options = [])
{
if (!is_array($values)) {
$values = [$field => $values];
}
$options['display'] = false;
switch ($field) {
case 'criteria':
$generic_rule = new Rule();
if (
isset($values['rules_id'])
&& !empty($values['rules_id'])
&& $generic_rule->getFromDB($values['rules_id'])
) {
if ($rule = getItemForItemtype($generic_rule->fields["sub_type"])) {
$options['value'] = $values[$field];
$options['name'] = $name;
return $rule->dropdownCriteria($options);
}
}
break;
case 'condition':
$generic_rule = new Rule();
if (
isset($values['rules_id'])
&& !empty($values['rules_id'])
&& $generic_rule->getFromDB($values['rules_id'])
) {
if ($rule = getItemForItemtype($generic_rule->fields["sub_type"])) {
if (isset($values['criteria']) && !empty($values['criteria'])) {
$options['criterion'] = $values['criteria'];
}
$options['value'] = $values[$field];
$options['name'] = $name;
return $rule->dropdownConditions($generic_rule->fields["sub_type"], $options);
}
}
break;
case 'pattern':
if (!isset($values["criteria"]) || !isset($values["condition"])) {
return NOT_AVAILABLE;
}
$generic_rule = new Rule();
if (
isset($values['rules_id'])
&& !empty($values['rules_id'])
&& $generic_rule->getFromDB($values['rules_id'])
) {
if ($rule = getItemForItemtype($generic_rule->fields["sub_type"])) {
/// TODO : manage display param to this function : need to send ot to all under functions
$rule->displayCriteriaSelectPattern(
$name,
$values["criteria"],
$values["condition"],
$values[$field]
);
}
}
break;
}
return parent::getSpecificValueToSelect($field, $name, $values, $options);
}
/**
* Get all criterias for a given rule
*
* @param $rules_id the rule ID
*
* @return an array of RuleCriteria objects
**/
public function getRuleCriterias($rules_id)
{
global $DB;
$rules_list = [];
$params = ['FROM' => $this->getTable(),
'WHERE' => [static::$items_id => $rules_id],
'ORDER' => 'id'
];
foreach ($DB->request($params) as $rule) {
$tmp = new self();
$tmp->fields = $rule;
$rules_list[] = $tmp;
}
return $rules_list;
}
/**
* Try to match a defined rule
*
* @param &$criterion RuleCriteria object
* @param $field the field to match
* @param &$criterias_results
* @param &$regex_result
*
* @return true if the field match the rule, false if it doesn't match
**/
public static function match(RuleCriteria &$criterion, $field, &$criterias_results, &$regex_result)
{
$condition = $criterion->fields['condition'];
$pattern = $criterion->fields['pattern'];
$criteria = $criterion->fields['criteria'];
// Permit use of `<`, `&` and `>` and prevent issues with quotes.
$raw_pattern = $pattern;
$pattern = Sanitizer::unsanitize($pattern);
$field = Sanitizer::unsanitize($field);
//If pattern is wildcard, don't check the rule and return true
//or if the condition is "already present in GLPI" : will be processed later
if (
($pattern == Rule::RULE_WILDCARD)
|| ($condition == Rule::PATTERN_FIND)
) {
return true;
}
$pattern = trim($pattern);
switch ($condition) {
case Rule::PATTERN_EXISTS:
return (!empty($field));
case Rule::PATTERN_DOES_NOT_EXISTS:
return (empty($field));
case Rule::PATTERN_IS:
if (is_array($field)) {
// Special case (used only by UNIQUE_PROFILE, for now)
// $pattern is an ID
if (in_array($pattern, $field)) {
$criterias_results[$criteria] = $raw_pattern;
return true;
}
} else {
//Perform comparison with fields in lower case
$field = Toolbox::strtolower($field);
$pattern = Toolbox::strtolower($pattern);
if ($field == $pattern) {
$criterias_results[$criteria] = $raw_pattern;
return true;
}
}
return false;
case Rule::PATTERN_IS_NOT:
//Perform comparison with fields in lower case
$field = Toolbox::strtolower($field);
$pattern = Toolbox::strtolower($pattern);
if ($field != $pattern) {
$criterias_results[$criteria] = $raw_pattern;
return true;
}
return false;
case Rule::PATTERN_UNDER:
$table = getTableNameForForeignKeyField($criteria);
$values = Sanitizer::unsanitize(getSonsOf($table, $pattern));
if (isset($values[$field])) {
return true;
}
return false;
case Rule::PATTERN_NOT_UNDER:
$table = getTableNameForForeignKeyField($criteria);
$values = Sanitizer::unsanitize(getSonsOf($table, $pattern));
if (isset($values[$field])) {
return false;
}
return true;
case Rule::PATTERN_END:
if (empty($pattern) || empty($field)) {
return false;
}
if (str_ends_with(mb_strtolower($field), mb_strtolower($pattern))) {
$criterias_results[$criteria] = $raw_pattern;
return true;
}
return false;
case Rule::PATTERN_BEGIN:
if (empty($pattern) || empty($field)) {
return false;
}
$value = mb_stripos($field, $pattern, 0, 'UTF-8');
if (($value !== false) && ($value == 0)) {
$criterias_results[$criteria] = $raw_pattern;
return true;
}
return false;
case Rule::PATTERN_CONTAIN:
if (empty($pattern) || empty($field)) {
return false;
}
$value = mb_stripos($field, $pattern, 0, 'UTF-8');
if (($value !== false) && ($value >= 0)) {
$criterias_results[$criteria] = $raw_pattern;
return true;
}
return false;
case Rule::PATTERN_NOT_CONTAIN:
if (empty($pattern)) {
return false;
}
$value = mb_stripos($field ?? '', $pattern, 0, 'UTF-8');
if ($value === false) {
$criterias_results[$criteria] = $raw_pattern;
return true;
}
return false;
case Rule::REGEX_MATCH:
$results = [];
$match_result = @preg_match_all($pattern . "i", $field, $results);
if ($match_result === false) {
trigger_error(
sprintf('Invalid regular expression `%s`.', $pattern),
E_USER_WARNING
);
} elseif ($match_result > 0) {
// Drop $result[0] : complete match result
array_shift($results);
// And add to $regex_result array
$res = [];
foreach ($results as $data) {
foreach ($data as $val) {
$res[] = $val;
}
}
$regex_result[] = $res;
$criterias_results[$criteria] = $raw_pattern;
return true;
}
return false;
case Rule::REGEX_NOT_MATCH:
$match_result = @preg_match($pattern . "i", $field);
if ($match_result === false) {
trigger_error(
sprintf('Invalid regular expression `%s`.', $pattern),
E_USER_WARNING
);
} elseif ($match_result === 0) {
$criterias_results[$criteria] = $raw_pattern;
return true;
}
return false;
case Rule::PATTERN_FIND:
case Rule::PATTERN_IS_EMPTY:
// Global criteria will be evaluated later
return true;
case Rule::PATTERN_CIDR:
case Rule::PATTERN_NOT_CIDR:
$exploded = explode('/', $pattern);
$subnet = ip2long($exploded[0]);
$bits = $exploded[1] ?? null;
$mask = -1 << (32 - $bits);
$subnet &= $mask; // nb: in case the supplied subnet wasn't correctly aligned
if (is_array($field)) {
foreach ($field as $ip) {
if (isset($ip) && $ip != '') {
$ip = ip2long($ip);
if (($ip & $mask) == $subnet) {
return ($condition == Rule::PATTERN_CIDR) ? true : false;
}
}
}
} else {
if (isset($field) && $field != '') {
$ip = ip2long($field);
if (
$condition == Rule::PATTERN_CIDR && ($ip & $mask) == $subnet
|| $condition == Rule::PATTERN_NOT_CIDR && ($ip & $mask) != $subnet
) {
return true;
}
}
}
}
return false;
}
/**
* Return the condition label by giving his ID
*
* @param $ID condition's ID
* @param $itemtype itemtype
* @param $criterion (default '')
*
* @return condition's label
**/
public static function getConditionByID($ID, $itemtype, $criterion = '')
{
$conditions = self::getConditions($itemtype, $criterion);
if (isset($conditions[$ID])) {
return $conditions[$ID];
}
return "";
}
/**
* @param $itemtype itemtype
* @param $criterion (default '')
*
* @return array of criteria
**/
public static function getConditions($itemtype, $criterion = '')
{
$criteria = [
Rule::PATTERN_IS => __('is'),
Rule::PATTERN_IS_NOT => __('is not'),
Rule::PATTERN_CONTAIN => __('contains'),
Rule::PATTERN_NOT_CONTAIN => __('does not contain'),
Rule::PATTERN_BEGIN => __('starting with'),
Rule::PATTERN_END => __('finished by'),
Rule::REGEX_MATCH => __('regular expression matches'),
Rule::REGEX_NOT_MATCH => __('regular expression does not match'),
Rule::PATTERN_EXISTS => __('exists'),
Rule::PATTERN_DOES_NOT_EXISTS => __('does not exist')
];
if (in_array($criterion, ['ip', 'subnet'])) {
$criteria = $criteria + [
Rule::PATTERN_CIDR => __('is CIDR'),
Rule::PATTERN_NOT_CIDR => __('is not CIDR')
];
}
$extra_criteria = call_user_func([$itemtype, 'addMoreCriteria'], $criterion);
foreach ($extra_criteria as $key => $value) {
$criteria[$key] = $value;
}
/// Add Under criteria if tree dropdown table used
if ($item = getItemForItemtype($itemtype)) {
$crit = $item->getCriteria($criterion);
if (isset($crit['type']) && ($crit['type'] == 'dropdown')) {
$crititemtype = getItemTypeForTable($crit['table']);
if (
($item = getItemForItemtype($crititemtype))
&& $item instanceof CommonTreeDropdown
) {
$criteria[Rule::PATTERN_UNDER] = __('under');
$criteria[Rule::PATTERN_NOT_UNDER] = __('not under');
}
}
}
return $criteria;
}
/**
* Display a dropdown with all the criterias
*
* @param $itemtype
* @param $params array
**/
public static function dropdownConditions($itemtype, $params = [])
{
$p['name'] = 'condition';
$p['criterion'] = '';
$p['allow_conditions'] = [];
$p['value'] = '';
$p['display'] = true;
foreach ($params as $key => $value) {
$p[$key] = $value;
}
$elements = [];
foreach (self::getConditions($itemtype, $p['criterion']) as $pattern => $label) {
if (
empty($p['allow_conditions'])
|| (!empty($p['allow_conditions']) && in_array($pattern, $p['allow_conditions']))
) {
$elements[$pattern] = $label;
}
}
return Dropdown::showFromArray($p['name'], $elements, ['value' => $p['value']]);
}
/** form for rule criteria
*
* @since 0.85
*
* @param $ID integer Id of the criteria
* @param $options array of possible options:
* - rule Object : the rule
**/
public function showForm($ID, array $options = [])
{
global $CFG_GLPI;
// Yllen: you always have parent for criteria
$rule = $options['parent'];
if ($ID > 0) {
$this->check($ID, READ);
} else {
// Create item
$options[static::$items_id] = $rule->getField('id');
//force itemtype of parent
static::$itemtype = get_class($rule);
$this->check(-1, CREATE, $options);
}
$this->showFormHeader($options);
echo "<tr class='tab_bg_1'>";
echo "<td class='center'>" . _n('Criterion', 'Criteria', 1) . "</td><td colspan='3'>";
echo "<input type='hidden' name='" . $rule->getRuleIdField() . "' value='" .
$this->fields[$rule->getRuleIdField()] . "'>";
$rand = $rule->dropdownCriteria(['value' => $this->fields['criteria']]);
$params = ['criteria' => '__VALUE__',
'rand' => $rand,
'sub_type' => $rule->getType()
];
Ajax::updateItemOnSelectEvent(
"dropdown_criteria$rand",
"criteria_span",
$CFG_GLPI["root_doc"] . "/ajax/rulecriteria.php",
$params
);
if (isset($this->fields['criteria']) && !empty($this->fields['criteria'])) {
$params['criteria'] = $this->fields['criteria'];
$params['condition'] = $this->fields['condition'];
$params['pattern'] = $this->fields['pattern'];
echo "<script type='text/javascript' >\n";
echo "$(function() {";
Ajax::updateItemJsCode(
"criteria_span",
$CFG_GLPI["root_doc"] . "/ajax/rulecriteria.php",
$params
);
echo '});</script>';
}
if ($rule->specific_parameters) {
$itemtype = get_class($rule) . 'Parameter';
echo "<span title=\"" . __s('Add a criterion') . "\" class='fa fa-plus pointer' " .
" data-bs-toggle='modal' data-bs-target='#addcriterion$rand'>" .
"<span class='sr-only'>" . __s('Add a criterion') . "</span></span>";
Ajax::createIframeModalWindow(
'addcriterion' . $rand,
$itemtype::getFormURL(),
['reloadonclose' => true]
);
}
echo "</td></tr>";
echo "<tr><td colspan='4'><span id='criteria_span'>\n";
echo "</span></td></tr>\n";
$this->showFormButtons($options);
return true;
}
}