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<?php
namespace Drupal\comment;
use Drupal\Core\Access\AccessResult;
use Drupal\Core\Entity\EntityAccessControlHandler;
use Drupal\Core\Entity\EntityInterface;
use Drupal\Core\Field\FieldDefinitionInterface;
use Drupal\Core\Field\FieldItemListInterface;
use Drupal\Core\Session\AccountInterface;
/**
* Defines the access control handler for the comment entity type.
*
* @see \Drupal\comment\Entity\Comment
*/
class CommentAccessControlHandler extends EntityAccessControlHandler {
/**
* {@inheritdoc}
*/
protected function checkAccess(EntityInterface $entity, $operation, AccountInterface $account) {
/** @var \Drupal\comment\CommentInterface|\Drupal\user\EntityOwnerInterface $entity */
$comment_admin = $account->hasPermission('administer comments');
if ($operation == 'approve') {
return AccessResult::allowedIf($comment_admin && !$entity->isPublished())
->cachePerPermissions()
->addCacheableDependency($entity);
}
if ($comment_admin) {
$access = AccessResult::allowed()->cachePerPermissions();
return ($operation != 'view') ? $access : $access->andIf($entity->getCommentedEntity()->access($operation, $account, TRUE));
}
switch ($operation) {
case 'view':
$access_result = AccessResult::allowedIf($account->hasPermission('access comments') && $entity->isPublished())->cachePerPermissions()->addCacheableDependency($entity)
->andIf($entity->getCommentedEntity()->access($operation, $account, TRUE));
if (!$access_result->isAllowed()) {
$access_result->setReason("The 'access comments' permission is required and the comment must be published.");
}
return $access_result;
case 'update':
return AccessResult::allowedIf($account->id() && $account->id() == $entity->getOwnerId() && $entity->isPublished() && $account->hasPermission('edit own comments'))->cachePerPermissions()->cachePerUser()->addCacheableDependency($entity);
default:
// No opinion.
return AccessResult::neutral()->cachePerPermissions();
}
}
/**
* {@inheritdoc}
*/
protected function checkCreateAccess(AccountInterface $account, array $context, $entity_bundle = NULL) {
return AccessResult::allowedIfHasPermission($account, 'post comments');
}
/**
* {@inheritdoc}
*/
protected function checkFieldAccess($operation, FieldDefinitionInterface $field_definition, AccountInterface $account, FieldItemListInterface $items = NULL) {
if ($operation == 'edit') {
// Only users with the "administer comments" permission can edit
// administrative fields.
$administrative_fields = array(
'uid',
'status',
'created',
'date',
);
if (in_array($field_definition->getName(), $administrative_fields, TRUE)) {
return AccessResult::allowedIfHasPermission($account, 'administer comments');
}
// No user can change read-only fields.
$read_only_fields = array(
'hostname',
'changed',
'cid',
'thread',
);
// These fields can be edited during comment creation.
$create_only_fields = [
'comment_type',
'uuid',
'entity_id',
'entity_type',
'field_name',
'pid',
];
if ($items && ($entity = $items->getEntity()) && $entity->isNew() && in_array($field_definition->getName(), $create_only_fields, TRUE)) {
// We are creating a new comment, user can edit create only fields.
return AccessResult::allowedIfHasPermission($account, 'post comments')->addCacheableDependency($entity);
}
// We are editing an existing comment - create only fields are now read
// only.
$read_only_fields = array_merge($read_only_fields, $create_only_fields);
if (in_array($field_definition->getName(), $read_only_fields, TRUE)) {
return AccessResult::forbidden();
}
// If the field is configured to accept anonymous contact details - admins
// can edit name, homepage and mail. Anonymous users can also fill in the
// fields on comment creation.
if (in_array($field_definition->getName(), ['name', 'mail', 'homepage'], TRUE)) {
if (!$items) {
// We cannot make a decision about access to edit these fields if we
// don't have any items and therefore cannot determine the Comment
// entity. In this case we err on the side of caution and prevent edit
// access.
return AccessResult::forbidden();
}
$is_name = $field_definition->getName() === 'name';
/** @var \Drupal\comment\CommentInterface $entity */
$entity = $items->getEntity();
$commented_entity = $entity->getCommentedEntity();
$anonymous_contact = $commented_entity->get($entity->getFieldName())->getFieldDefinition()->getSetting('anonymous');
$admin_access = AccessResult::allowedIfHasPermission($account, 'administer comments');
$anonymous_access = AccessResult::allowedIf($entity->isNew() && $account->isAnonymous() && ($anonymous_contact != COMMENT_ANONYMOUS_MAYNOT_CONTACT || $is_name) && $account->hasPermission('post comments'))
->cachePerPermissions()
->addCacheableDependency($entity)
->addCacheableDependency($field_definition->getConfig($commented_entity->bundle()))
->addCacheableDependency($commented_entity);
return $admin_access->orIf($anonymous_access);
}
}
if ($operation == 'view') {
// Nobody has access to the hostname.
if ($field_definition->getName() == 'hostname') {
return AccessResult::forbidden();
}
// The mail field is hidden from non-admins.
if ($field_definition->getName() == 'mail') {
return AccessResult::allowedIfHasPermission($account, 'administer comments');
}
}
return parent::checkFieldAccess($operation, $field_definition, $account, $items);
}
}
|
