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RuleManager.php
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<?php
declare(strict_types=1);
/**
* SPDX-FileCopyrightText: 2019 Nextcloud GmbH and Nextcloud contributors
* SPDX-License-Identifier: AGPL-3.0-or-later
*/
namespace OCA\GroupFolders\ACL;
use OCA\GroupFolders\ACL\UserMapping\IUserMapping;
use OCA\GroupFolders\ACL\UserMapping\IUserMappingManager;
use OCP\DB\QueryBuilder\ICompositeExpression;
use OCP\DB\QueryBuilder\IQueryBuilder;
use OCP\EventDispatcher\IEventDispatcher;
use OCP\IDBConnection;
use OCP\IUser;
use OCP\Log\Audit\CriticalActionPerformedEvent;
class RuleManager {
public function __construct(
private readonly IDBConnection $connection,
private readonly IUserMappingManager $userMappingManager,
private readonly IEventDispatcher $eventDispatcher,
) {
}
private function createRule(array $data): ?Rule {
$mapping = $this->userMappingManager->mappingFromId($data['mapping_type'], $data['mapping_id']);
if ($mapping) {
return new Rule(
$mapping,
(int)$data['fileid'],
(int)$data['mask'],
(int)$data['permissions']
);
} else {
return null;
}
}
/**
* @param int[] $fileIds
* @return array<int, Rule[]>
*/
public function getRulesForFilesById(IUser $user, array $fileIds): array {
$userMappings = $this->userMappingManager->getMappingsForUser($user);
$query = $this->connection->getQueryBuilder();
$query->select(['fileid', 'mapping_type', 'mapping_id', 'mask', 'permissions'])
->from('group_folders_acl')
->where($query->expr()->in('fileid', $query->createNamedParameter($fileIds, IQueryBuilder::PARAM_INT_ARRAY)))
->andWhere($query->expr()->orX(...array_map(fn (IUserMapping $userMapping): ICompositeExpression => $query->expr()->andX(
$query->expr()->eq('mapping_type', $query->createNamedParameter($userMapping->getType())),
$query->expr()->eq('mapping_id', $query->createNamedParameter($userMapping->getId()))
), $userMappings)));
$rows = $query->executeQuery()->fetchAll();
$result = [];
foreach ($rows as $row) {
if (!isset($result[$row['fileid']])) {
$result[$row['fileid']] = [];
}
$rule = $this->createRule($row);
if ($rule) {
$result[$row['fileid']][] = $rule;
}
}
return $result;
}
/**
* @param string[] $filePaths
* @return array<string, Rule[]>
*/
public function getRulesForFilesByPath(IUser $user, int $storageId, array $filePaths): array {
$userMappings = $this->userMappingManager->getMappingsForUser($user);
$hashes = array_map(fn (string $path): string => md5(trim($path, '/')), $filePaths);
$rows = [];
foreach (array_chunk($hashes, 1000) as $chunk) {
$query = $this->connection->getQueryBuilder();
$query->select(['f.fileid', 'mapping_type', 'mapping_id', 'mask', 'a.permissions', 'f.path'])
->from('group_folders_acl', 'a')
->innerJoin('a', 'filecache', 'f', $query->expr()->eq('f.fileid', 'a.fileid'))
->where($query->expr()->in('f.path_hash', $query->createNamedParameter($chunk, IQueryBuilder::PARAM_STR_ARRAY)))
->andWhere($query->expr()->eq('f.storage', $query->createNamedParameter($storageId, IQueryBuilder::PARAM_INT)))
->andWhere($query->expr()->orX(...array_map(fn (IUserMapping $userMapping): ICompositeExpression => $query->expr()->andX(
$query->expr()->eq('mapping_type', $query->createNamedParameter($userMapping->getType())),
$query->expr()->eq('mapping_id', $query->createNamedParameter($userMapping->getId()))
), $userMappings)));
$rows = array_merge($rows, $query->executeQuery()->fetchAll());
}
$result = [];
foreach ($filePaths as $path) {
$result[$path] = [];
}
return $this->rulesByPath($rows, $result);
}
/**
* @return array<string, Rule[]>
*/
public function getRulesForFilesByParent(IUser $user, int $storageId, string $parent): array {
$userMappings = $this->userMappingManager->getMappingsForUser($user);
$parentId = $this->getId($storageId, $parent);
if (!$parentId) {
return [];
}
$query = $this->connection->getQueryBuilder();
$query->select(['f.fileid', 'a.mapping_type', 'a.mapping_id', 'a.mask', 'a.permissions', 'f.path'])
->from('filecache', 'f')
->leftJoin('f', 'group_folders_acl', 'a', $query->expr()->eq('f.fileid', 'a.fileid'))
->andWhere($query->expr()->eq('f.parent', $query->createNamedParameter($parentId, IQueryBuilder::PARAM_INT)))
->andWhere($query->expr()->eq('f.storage', $query->createNamedParameter($storageId, IQueryBuilder::PARAM_INT)))
->andWhere(
$query->expr()->orX(
$query->expr()->andX(
$query->expr()->isNull('a.mapping_type'),
$query->expr()->isNull('a.mapping_id')
),
...array_map(fn (IUserMapping $userMapping): ICompositeExpression => $query->expr()->andX(
$query->expr()->eq('a.mapping_type', $query->createNamedParameter($userMapping->getType())),
$query->expr()->eq('a.mapping_id', $query->createNamedParameter($userMapping->getId()))
), $userMappings)
)
);
$rows = $query->executeQuery()->fetchAll();
$result = [];
foreach ($rows as $row) {
if (!isset($result[$row['path']])) {
$result[$row['path']] = [];
}
if ($row['mapping_type'] !== null) {
$rule = $this->createRule($row);
if ($rule) {
$result[$row['path']][] = $rule;
}
}
}
return $result;
}
private function getId(int $storageId, string $path): int {
$query = $this->connection->getQueryBuilder();
$query->select(['fileid'])
->from('filecache')
->where($query->expr()->eq('path_hash', $query->createNamedParameter(md5($path), IQueryBuilder::PARAM_STR)))
->andWhere($query->expr()->eq('storage', $query->createNamedParameter($storageId, IQueryBuilder::PARAM_INT)));
return (int)$query->executeQuery()->fetch(\PDO::FETCH_COLUMN);
}
/**
* @param string[] $filePaths
* @return array<string, Rule[]>
*/
public function getAllRulesForPaths(int $storageId, array $filePaths): array {
$hashes = array_map(fn (string $path): string => md5(trim($path, '/')), $filePaths);
$query = $this->connection->getQueryBuilder();
$query->select(['f.fileid', 'mapping_type', 'mapping_id', 'mask', 'a.permissions', 'f.path'])
->from('group_folders_acl', 'a')
->innerJoin('a', 'filecache', 'f', $query->expr()->eq('f.fileid', 'a.fileid'))
->where($query->expr()->in('f.path_hash', $query->createNamedParameter($hashes, IQueryBuilder::PARAM_STR_ARRAY)))
->andWhere($query->expr()->eq('f.storage', $query->createNamedParameter($storageId, IQueryBuilder::PARAM_INT)));
$rows = $query->executeQuery()->fetchAll();
return $this->rulesByPath($rows);
}
private function rulesByPath(array $rows, array $result = []): array {
foreach ($rows as $row) {
if (!isset($result[$row['path']])) {
$result[$row['path']] = [];
}
$rule = $this->createRule($row);
if ($rule) {
$result[$row['path']][] = $rule;
}
}
ksort($result);
return $result;
}
/**
* @return array<string, Rule[]>
*/
public function getAllRulesForPrefix(int $storageId, string $prefix): array {
$query = $this->connection->getQueryBuilder();
$query->select(['f.fileid', 'mapping_type', 'mapping_id', 'mask', 'a.permissions', 'f.path'])
->from('group_folders_acl', 'a')
->innerJoin('a', 'filecache', 'f', $query->expr()->eq('f.fileid', 'a.fileid'))
->where($query->expr()->orX(
$query->expr()->like('f.path', $query->createNamedParameter($this->connection->escapeLikeParameter($prefix) . '/%')),
$query->expr()->eq('f.path_hash', $query->createNamedParameter(md5($prefix)))
))
->andWhere($query->expr()->eq('f.storage', $query->createNamedParameter($storageId, IQueryBuilder::PARAM_INT)));
$rows = $query->executeQuery()->fetchAll();
return $this->rulesByPath($rows);
}
/**
* @return array<string, Rule[]>
*/
public function getRulesForPrefix(IUser $user, int $storageId, string $prefix): array {
$userMappings = $this->userMappingManager->getMappingsForUser($user);
$query = $this->connection->getQueryBuilder();
$query->select(['f.fileid', 'mapping_type', 'mapping_id', 'mask', 'a.permissions', 'f.path'])
->from('group_folders_acl', 'a')
->innerJoin('a', 'filecache', 'f', $query->expr()->eq('f.fileid', 'a.fileid'))
->where($query->expr()->orX(
$query->expr()->like('f.path', $query->createNamedParameter($this->connection->escapeLikeParameter($prefix) . '/%')),
$query->expr()->eq('f.path_hash', $query->createNamedParameter(md5($prefix)))
))
->andWhere($query->expr()->eq('f.storage', $query->createNamedParameter($storageId, IQueryBuilder::PARAM_INT)))
->andWhere($query->expr()->orX(...array_map(fn (IUserMapping $userMapping): ICompositeExpression => $query->expr()->andX(
$query->expr()->eq('mapping_type', $query->createNamedParameter($userMapping->getType())),
$query->expr()->eq('mapping_id', $query->createNamedParameter($userMapping->getId()))
), $userMappings)));
$rows = $query->executeQuery()->fetchAll();
return $this->rulesByPath($rows);
}
private function hasRule(IUserMapping $mapping, int $fileId): bool {
$query = $this->connection->getQueryBuilder();
$query->select('fileid')
->from('group_folders_acl')
->where($query->expr()->eq('fileid', $query->createNamedParameter($fileId, IQueryBuilder::PARAM_INT)))
->andWhere($query->expr()->eq('mapping_type', $query->createNamedParameter($mapping->getType())))
->andWhere($query->expr()->eq('mapping_id', $query->createNamedParameter($mapping->getId())));
return (bool)$query->executeQuery()->fetch();
}
public function saveRule(Rule $rule): void {
if ($this->hasRule($rule->getUserMapping(), $rule->getFileId())) {
$query = $this->connection->getQueryBuilder();
$query->update('group_folders_acl')
->set('mask', $query->createNamedParameter($rule->getMask(), IQueryBuilder::PARAM_INT))
->set('permissions', $query->createNamedParameter($rule->getPermissions(), IQueryBuilder::PARAM_INT))
->where($query->expr()->eq('fileid', $query->createNamedParameter($rule->getFileId(), IQueryBuilder::PARAM_INT)))
->andWhere($query->expr()->eq('mapping_type', $query->createNamedParameter($rule->getUserMapping()->getType())))
->andWhere($query->expr()->eq('mapping_id', $query->createNamedParameter($rule->getUserMapping()->getId())));
$query->executeStatement();
if ($rule->getUserMapping()->getType() === 'user') {
$logMessage = 'The ACL rule was updated to permission "%s" and mask "%s" for file/folder with id "%s" for user "%s"';
$params = [
'permissions' => $rule->getPermissions(),
'mask' => $rule->getMask(),
'fileId' => $rule->getFileId(),
'user' => $rule->getUserMapping()->getDisplayName() . ' (' . $rule->getUserMapping()->getId() . ')',
];
} else {
$logMessage = 'The ACL rule was updated to permission "%s" and mask "%s" for file/folder with id "%s" for group "%s"';
$params = [
'permissions' => $rule->getPermissions(),
'mask' => $rule->getMask(),
'fileId' => $rule->getFileId(),
'user' => $rule->getUserMapping()->getDisplayName(),
];
}
$this->eventDispatcher->dispatchTyped(new CriticalActionPerformedEvent($logMessage, $params));
} else {
$query = $this->connection->getQueryBuilder();
$query->insert('group_folders_acl')
->values([
'fileid' => $query->createNamedParameter($rule->getFileId(), IQueryBuilder::PARAM_INT),
'mapping_type' => $query->createNamedParameter($rule->getUserMapping()->getType()),
'mapping_id' => $query->createNamedParameter($rule->getUserMapping()->getId()),
'mask' => $query->createNamedParameter($rule->getMask(), IQueryBuilder::PARAM_INT),
'permissions' => $query->createNamedParameter($rule->getPermissions(), IQueryBuilder::PARAM_INT)
]);
$query->executeStatement();
if ($rule->getUserMapping()->getType() === 'user') {
$logMessage = 'A new ACL rule was created to permission "%s" and mask "%s" for file/folder with id "%s" for user "%s"';
$params = [
'permissions' => $rule->getPermissions(),
'mask' => $rule->getMask(),
'fileId' => $rule->getFileId(),
'user' => $rule->getUserMapping()->getDisplayName() . ' (' . $rule->getUserMapping()->getId() . ')',
];
} else {
$logMessage = 'A new ACL rule was created to permission "%s" and mask "%s" for file/folder with id "%s" for group "%s"';
$params = [
'permissions' => $rule->getPermissions(),
'mask' => $rule->getMask(),
'fileId' => $rule->getFileId(),
'group' => $rule->getUserMapping()->getDisplayName(),
];
}
$this->eventDispatcher->dispatchTyped(new CriticalActionPerformedEvent($logMessage, $params));
}
}
public function deleteRule(Rule $rule): void {
$query = $this->connection->getQueryBuilder();
$query->delete('group_folders_acl')
->where($query->expr()->eq('fileid', $query->createNamedParameter($rule->getFileId(), IQueryBuilder::PARAM_INT)))
->andWhere($query->expr()->eq('mapping_type', $query->createNamedParameter($rule->getUserMapping()->getType())))
->andWhere($query->expr()->eq('mapping_id', $query->createNamedParameter($rule->getUserMapping()->getId())));
$query->executeStatement();
if ($rule->getUserMapping()->getType() === 'user') {
$logMessage = 'The ACL rule was deleted for file/folder with id: "%s" for the user "%s"';
$params = [
'fileId' => $rule->getFileId(),
'user' => $rule->getUserMapping()->getDisplayName() . ' (' . $rule->getUserMapping()->getId() . ')',
];
} else {
$logMessage = 'The ACL rule was deleted for file/folder with id: "%s" for the group "%s"';
$params = [
'fileId' => $rule->getFileId(),
'group' => $rule->getUserMapping()->getDisplayName(),
];
}
$this->eventDispatcher->dispatchTyped(new CriticalActionPerformedEvent($logMessage, $params));
}
}