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1 <?php
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2
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3 namespace Drupal\Core\Condition;
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4
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5 use Drupal\Component\Plugin\Exception\ContextException;
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6
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7 /**
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8 * Resolves a set of conditions.
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9 */
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10 trait ConditionAccessResolverTrait {
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11
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12 /**
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13 * Resolves the given conditions based on the condition logic ('and'/'or').
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14 *
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15 * @param \Drupal\Core\Condition\ConditionInterface[] $conditions
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16 * A set of conditions.
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17 * @param string $condition_logic
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18 * The logic used to compute access, either 'and' or 'or'.
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19 *
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20 * @return bool
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21 * Whether these conditions grant or deny access.
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22 */
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23 protected function resolveConditions($conditions, $condition_logic) {
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24 foreach ($conditions as $condition) {
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25 try {
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26 $pass = $condition->execute();
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27 }
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28 catch (ContextException $e) {
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29 // If a condition is missing context and is not negated, consider that a
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30 // fail.
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31 $pass = $condition->isNegated();
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32 }
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33
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34 // If a condition fails and all conditions were needed, deny access.
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35 if (!$pass && $condition_logic == 'and') {
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36 return FALSE;
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37 }
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38 // If a condition passes and only one condition was needed, grant access.
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39 elseif ($pass && $condition_logic == 'or') {
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40 return TRUE;
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41 }
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42 }
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43
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44 // Return TRUE if logic was 'and', meaning all rules passed.
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45 // Return FALSE if logic was 'or', meaning no rule passed.
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46 return $condition_logic == 'and';
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47 }
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48
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49 }
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