/**
* Gets the ACLs that belong to the given object identities
*
* We have to implement this method due a bug in AclProvider::findAcls:
* when $oids array length > AclProvider::MAX_BATCH_SIZE and no any ACLs were found for any bath, the findAcls
* method throws AclNotFoundException rather than continue loading ACLs for other batched and throw
* this exception only when no any ACLs found for all batches. But if at least one ACL (but not all) was found
* this method should throw NotAllAclsFoundException.
*
* @param OID[] $oids
* @param SID[] $sids
* @return \SplObjectStorage mapping the passed object identities to ACLs
* @throws AclNotFoundException
* @throws NotAllAclsFoundException
*/
protected function doFindAcls(array $oids, array $sids)
{
// split object identities to batches (batch size must be less than or equal AclProvider::MAX_BATCH_SIZE)
$oidsBatches = array();
$batchIndex = 0;
$oidsBatches[$batchIndex] = array();
$index = 0;
foreach ($oids as $oid) {
/**
* We can not use AclProvider::MAX_BATCH_SIZE of Symfony ACL due to a bug check in the cache
*/
if ($index >= self::MAX_BATCH_SIZE) {
$index = 0;
$batchIndex++;
}
$oidsBatches[$batchIndex][] = $oid;
$index++;
}
$result = null;
foreach ($oidsBatches as $oidsBatch) {
try {
$acls = $this->aclProvider->findAcls($oidsBatch, $sids);
if ($result === null) {
$result = $acls;
} else {
foreach ($acls as $aclOid) {
$result->attach($aclOid, $acls->offsetGet($aclOid));
}
}
} catch (AclNotFoundException $ex) {
if ($ex instanceof NotAllAclsFoundException) {
if ($result === null) {
$result = $ex->getPartialResult();
} else {
$partialResult = $ex->getPartialResult();
foreach ($partialResult as $aclOid) {
$result->attach($aclOid, $partialResult->offsetGet($aclOid));
}
}
} else {
if ($result === null) {
$result = new \SplObjectStorage();
}
}
}
}
// check that we got ACLs for all the identities
foreach ($oids as $oid) {
if (!$result->contains($oid)) {
if (1 === count($oids)) {
throw new AclNotFoundException(sprintf('No ACL found for %s.', $oid));
}
$partialResultEx = new NotAllAclsFoundException('The provider could not find ACLs for all object identities.');
$partialResultEx->setPartialResult($result);
throw $partialResultEx;
}
}
return $result;
}
/**
* {@inheritDoc}
*/
public function findAcls(array $oids, array $sids = array())
{
$result = new \SplObjectStorage();
$currentBatch = array();
$oidLookup = array();
for ($i = 0, $c = count($oids); $i < $c; $i++) {
$oid = $oids[$i];
$oidLookupKey = $oid->getIdentifier() . $oid->getType();
$oidLookup[$oidLookupKey] = $oid;
$aclFound = false;
// check if result already contains an ACL
if ($result->contains($oid)) {
$aclFound = true;
}
// check if this ACL has already been hydrated
if (!$aclFound && isset($this->loadedAcls[$oid->getType()][$oid->getIdentifier()])) {
$acl = $this->loadedAcls[$oid->getType()][$oid->getIdentifier()];
if (!$acl->isSidLoaded($sids)) {
// FIXME: we need to load ACEs for the missing SIDs. This is never
// reached by the default implementation, since we do not
// filter by SID
throw new \RuntimeException('This is not supported by the default implementation.');
} else {
$result->attach($oid, $acl);
$aclFound = true;
}
}
// check if we can locate the ACL in the cache
if (!$aclFound && null !== $this->aclCache) {
$acl = $this->aclCache->getFromCacheByIdentity($oid);
if (null !== $acl) {
if ($acl->isSidLoaded($sids)) {
// check if any of the parents has been loaded since we need to
// ensure that there is only ever one ACL per object identity
$parentAcl = $acl->getParentAcl();
while (null !== $parentAcl) {
$parentOid = $parentAcl->getObjectIdentity();
if (isset($this->loadedAcls[$parentOid->getType()][$parentOid->getIdentifier()])) {
$acl->setParentAcl($this->loadedAcls[$parentOid->getType()][$parentOid->getIdentifier()]);
break;
} else {
$this->loadedAcls[$parentOid->getType()][$parentOid->getIdentifier()] = $parentAcl;
$this->updateAceIdentityMap($parentAcl);
}
$parentAcl = $parentAcl->getParentAcl();
}
$this->loadedAcls[$oid->getType()][$oid->getIdentifier()] = $acl;
$this->updateAceIdentityMap($acl);
$result->attach($oid, $acl);
$aclFound = true;
} else {
$this->aclCache->evictFromCacheByIdentity($oid);
foreach ($this->findChildren($oid) as $childOid) {
$this->aclCache->evictFromCacheByIdentity($childOid);
}
}
}
}
// looks like we have to load the ACL from the database
if (!$aclFound) {
$currentBatch[] = $oid;
}
// Is it time to load the current batch?
if ((self::MAX_BATCH_SIZE === count($currentBatch) || $i + 1 === $c) && count($currentBatch) > 0) {
$loadedBatch = $this->lookupObjectIdentities($currentBatch, $sids, $oidLookup);
foreach ($loadedBatch as $loadedOid) {
$loadedAcl = $loadedBatch->offsetGet($loadedOid);
if (null !== $this->aclCache) {
$this->aclCache->putInCache($loadedAcl);
}
if (isset($oidLookup[$loadedOid->getIdentifier() . $loadedOid->getType()])) {
$result->attach($loadedOid, $loadedAcl);
}
}
$currentBatch = array();
}
}
// check that we got ACLs for all the identities
foreach ($oids as $oid) {
if (!$result->contains($oid)) {
if (1 === count($oids)) {
throw new AclNotFoundException(sprintf('No ACL found for %s.', $oid));
}
$partialResultException = new NotAllAclsFoundException('The provider could not find ACLs for all object identities.');
$partialResultException->setPartialResult($result);
throw $partialResultException;
}
}
return $result;
}
/**
* @param array $src
* @throws NotAllAclsFoundException
* @return \SplObjectStorage
*/
public static function getAcls(array $src)
{
$isPartial = false;
$acls = new \SplObjectStorage();
foreach ($src as $item) {
if ($item['acl'] !== null) {
$acls->attach($item['oid'], $item['acl']);
} else {
$isPartial = true;
}
}
if ($isPartial) {
$ex = new NotAllAclsFoundException();
$ex->setPartialResult($acls);
throw $ex;
}
return $acls;
}