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<?php
/*
* This file is part of the Symfony package.
*
* (c) Fabien Potencier <fabien@symfony.com>
*
* For the full copyright and license information, please view the LICENSE
* file that was distributed with this source code.
*/
namespace Symfony\Component\Security\Acl\Domain;
use Doctrine\Common\NotifyPropertyChanged;
use Doctrine\Common\PropertyChangedListener;
use Symfony\Component\Security\Acl\Model\AclInterface;
use Symfony\Component\Security\Acl\Model\AuditableAclInterface;
use Symfony\Component\Security\Acl\Model\EntryInterface;
use Symfony\Component\Security\Acl\Model\ObjectIdentityInterface;
use Symfony\Component\Security\Acl\Model\PermissionGrantingStrategyInterface;
use Symfony\Component\Security\Acl\Model\SecurityIdentityInterface;
/**
* An ACL implementation.
*
* Each object identity has exactly one associated ACL. Each ACL can have four
* different types of ACEs (class ACEs, object ACEs, class field ACEs, object field
* ACEs).
*
* You should not iterate over the ACEs yourself, but instead use isGranted(),
* or isFieldGranted(). These will utilize an implementation of PermissionGrantingStrategy
* internally.
*
* @author Johannes M. Schmitt <schmittjoh@gmail.com>
*/
class Acl implements AuditableAclInterface, NotifyPropertyChanged
{
private $parentAcl;
private $permissionGrantingStrategy;
private $objectIdentity;
private $classAces = array();
private $classFieldAces = array();
private $objectAces = array();
private $objectFieldAces = array();
private $id;
private $loadedSids;
private $entriesInheriting;
private $listeners = array();
/**
* Constructor
*
* @param integer $id
* @param ObjectIdentityInterface $objectIdentity
* @param PermissionGrantingStrategyInterface $permissionGrantingStrategy
* @param array $loadedSids
* @param Boolean $entriesInheriting
*/
public function __construct($id, ObjectIdentityInterface $objectIdentity, PermissionGrantingStrategyInterface $permissionGrantingStrategy, array $loadedSids = array(), $entriesInheriting)
{
$this->id = $id;
$this->objectIdentity = $objectIdentity;
$this->permissionGrantingStrategy = $permissionGrantingStrategy;
$this->loadedSids = $loadedSids;
$this->entriesInheriting = $entriesInheriting;
}
/**
* Adds a property changed listener
*
* @param PropertyChangedListener $listener
*/
public function addPropertyChangedListener(PropertyChangedListener $listener)
{
$this->listeners[] = $listener;
}
/**
* {@inheritDoc}
*/
public function deleteClassAce($index)
{
$this->deleteAce('classAces', $index);
}
/**
* {@inheritDoc}
*/
public function deleteClassFieldAce($index, $field)
{
$this->deleteFieldAce('classFieldAces', $index, $field);
}
/**
* {@inheritDoc}
*/
public function deleteObjectAce($index)
{
$this->deleteAce('objectAces', $index);
}
/**
* {@inheritDoc}
*/
public function deleteObjectFieldAce($index, $field)
{
$this->deleteFieldAce('objectFieldAces', $index, $field);
}
/**
* {@inheritDoc}
*/
public function getClassAces()
{
return $this->classAces;
}
/**
* {@inheritDoc}
*/
public function getClassFieldAces($field)
{
return isset($this->classFieldAces[$field])? $this->classFieldAces[$field] : array();
}
/**
* {@inheritDoc}
*/
public function getObjectAces()
{
return $this->objectAces;
}
/**
* {@inheritDoc}
*/
public function getObjectFieldAces($field)
{
return isset($this->objectFieldAces[$field]) ? $this->objectFieldAces[$field] : array();
}
/**
* {@inheritDoc}
*/
public function getId()
{
return $this->id;
}
/**
* {@inheritDoc}
*/
public function getObjectIdentity()
{
return $this->objectIdentity;
}
/**
* {@inheritDoc}
*/
public function getParentAcl()
{
return $this->parentAcl;
}
/**
* {@inheritDoc}
*/
public function insertClassAce(SecurityIdentityInterface $sid, $mask, $index = 0, $granting = true, $strategy = null)
{
$this->insertAce('classAces', $index, $mask, $sid, $granting, $strategy);
}
/**
* {@inheritDoc}
*/
public function insertClassFieldAce($field, SecurityIdentityInterface $sid, $mask, $index = 0, $granting = true, $strategy = null)
{
$this->insertFieldAce('classFieldAces', $index, $field, $mask, $sid, $granting, $strategy);
}
/**
* {@inheritDoc}
*/
public function insertObjectAce(SecurityIdentityInterface $sid, $mask, $index = 0, $granting = true, $strategy = null)
{
$this->insertAce('objectAces', $index, $mask, $sid, $granting, $strategy);
}
/**
* {@inheritDoc}
*/
public function insertObjectFieldAce($field, SecurityIdentityInterface $sid, $mask, $index = 0, $granting = true, $strategy = null)
{
$this->insertFieldAce('objectFieldAces', $index, $field, $mask, $sid, $granting, $strategy);
}
/**
* {@inheritDoc}
*/
public function isEntriesInheriting()
{
return $this->entriesInheriting;
}
/**
* {@inheritDoc}
*/
public function isFieldGranted($field, array $masks, array $securityIdentities, $administrativeMode = false)
{
return $this->permissionGrantingStrategy->isFieldGranted($this, $field, $masks, $securityIdentities, $administrativeMode);
}
/**
* {@inheritDoc}
*/
public function isGranted(array $masks, array $securityIdentities, $administrativeMode = false)
{
return $this->permissionGrantingStrategy->isGranted($this, $masks, $securityIdentities, $administrativeMode);
}
/**
* {@inheritDoc}
*/
public function isSidLoaded($sids)
{
if (!$this->loadedSids) {
return true;
}
if (!is_array($sids)) {
$sids = array($sids);
}
foreach ($sids as $sid) {
if (!$sid instanceof SecurityIdentityInterface) {
throw new \InvalidArgumentException(
'$sid must be an instance of SecurityIdentityInterface.');
}
foreach ($this->loadedSids as $loadedSid) {
if ($loadedSid->equals($sid)) {
continue 2;
}
}
return false;
}
return true;
}
/**
* Implementation for the \Serializable interface
*
* @return string
*/
public function serialize()
{
return serialize(array(
null === $this->parentAcl ? null : $this->parentAcl->getId(),
$this->objectIdentity,
$this->classAces,
$this->classFieldAces,
$this->objectAces,
$this->objectFieldAces,
$this->id,
$this->loadedSids,
$this->entriesInheriting,
));
}
/**
* Implementation for the \Serializable interface
*
* @param string $serialized
*/
public function unserialize($serialized)
{
list($this->parentAcl,
$this->objectIdentity,
$this->classAces,
$this->classFieldAces,
$this->objectAces,
$this->objectFieldAces,
$this->id,
$this->loadedSids,
$this->entriesInheriting
) = unserialize($serialized);
$this->listeners = array();
}
/**
* {@inheritDoc}
*/
public function setEntriesInheriting($boolean)
{
if ($this->entriesInheriting !== $boolean) {
$this->onPropertyChanged('entriesInheriting', $this->entriesInheriting, $boolean);
$this->entriesInheriting = $boolean;
}
}
/**
* {@inheritDoc}
*/
public function setParentAcl(AclInterface $acl = null)
{
if (null !== $acl && null === $acl->getId()) {
throw new \InvalidArgumentException('$acl must have an ID.');
}
if ($this->parentAcl !== $acl) {
$this->onPropertyChanged('parentAcl', $this->parentAcl, $acl);
$this->parentAcl = $acl;
}
}
/**
* {@inheritDoc}
*/
public function updateClassAce($index, $mask, $strategy = null)
{
$this->updateAce('classAces', $index, $mask, $strategy);
}
/**
* {@inheritDoc}
*/
public function updateClassFieldAce($index, $field, $mask, $strategy = null)
{
$this->updateFieldAce('classFieldAces', $index, $field, $mask, $strategy);
}
/**
* {@inheritDoc}
*/
public function updateObjectAce($index, $mask, $strategy = null)
{
$this->updateAce('objectAces', $index, $mask, $strategy);
}
/**
* {@inheritDoc}
*/
public function updateObjectFieldAce($index, $field, $mask, $strategy = null)
{
$this->updateFieldAce('objectFieldAces', $index, $field, $mask, $strategy);
}
/**
* {@inheritDoc}
*/
public function updateClassAuditing($index, $auditSuccess, $auditFailure)
{
$this->updateAuditing($this->classAces, $index, $auditSuccess, $auditFailure);
}
/**
* {@inheritDoc}
*/
public function updateClassFieldAuditing($index, $field, $auditSuccess, $auditFailure)
{
if (!isset($this->classFieldAces[$field])) {
throw new \InvalidArgumentException(sprintf('There are no ACEs for field "%s".', $field));
}
$this->updateAuditing($this->classFieldAces[$field], $index, $auditSuccess, $auditFailure);
}
/**
* {@inheritDoc}
*/
public function updateObjectAuditing($index, $auditSuccess, $auditFailure)
{
$this->updateAuditing($this->objectAces, $index, $auditSuccess, $auditFailure);
}
/**
* {@inheritDoc}
*/
public function updateObjectFieldAuditing($index, $field, $auditSuccess, $auditFailure)
{
if (!isset($this->objectFieldAces[$field])) {
throw new \InvalidArgumentException(sprintf('There are no ACEs for field "%s".', $field));
}
$this->updateAuditing($this->objectFieldAces[$field], $index, $auditSuccess, $auditFailure);
}
/**
* Deletes an ACE
*
* @param string $property
* @param integer $index
* @throws \OutOfBoundsException
*/
private function deleteAce($property, $index)
{
$aces =& $this->$property;
if (!isset($aces[$index])) {
throw new \OutOfBoundsException(sprintf('The index "%d" does not exist.', $index));
}
$oldValue = $this->$property;
unset($aces[$index]);
$this->$property = array_values($this->$property);
$this->onPropertyChanged($property, $oldValue, $this->$property);
for ($i=$index,$c=count($this->$property); $i<$c; $i++) {
$this->onEntryPropertyChanged($aces[$i], 'aceOrder', $i+1, $i);
}
}
/**
* Deletes a field-based ACE
*
* @param string $property
* @param integer $index
* @param string $field
* @throws \OutOfBoundsException
*/
private function deleteFieldAce($property, $index, $field)
{
$aces =& $this->$property;
if (!isset($aces[$field][$index])) {
throw new \OutOfBoundsException(sprintf('The index "%d" does not exist.', $index));
}
$oldValue = $this->$property;
unset($aces[$field][$index]);
$aces[$field] = array_values($aces[$field]);
$this->onPropertyChanged($property, $oldValue, $this->$property);
for ($i=$index,$c=count($aces[$field]); $i<$c; $i++) {
$this->onEntryPropertyChanged($aces[$field][$i], 'aceOrder', $i+1, $i);
}
}
/**
* Inserts an ACE
*
* @param string $property
* @param integer $index
* @param integer $mask
* @param SecurityIdentityInterface $sid
* @param Boolean $granting
* @param string $strategy
* @throws \OutOfBoundsException
* @throws \InvalidArgumentException
*/
private function insertAce($property, $index, $mask, SecurityIdentityInterface $sid, $granting, $strategy = null)
{
if ($index < 0 || $index > count($this->$property)) {
throw new \OutOfBoundsException(sprintf('The index must be in the interval [0, %d].', count($this->$property)));
}
if (!is_int($mask)) {
throw new \InvalidArgumentException('$mask must be an integer.');
}
if (null === $strategy) {
if (true === $granting) {
$strategy = PermissionGrantingStrategy::ALL;
} else {
$strategy = PermissionGrantingStrategy::ANY;
}
}
$aces =& $this->$property;
$oldValue = $this->$property;
if (isset($aces[$index])) {
$this->$property = array_merge(
array_slice($this->$property, 0, $index),
array(true),
array_slice($this->$property, $index)
);
for ($i=$index,$c=count($this->$property)-1; $i<$c; $i++) {
$this->onEntryPropertyChanged($aces[$i+1], 'aceOrder', $i, $i+1);
}
}
$aces[$index] = new Entry(null, $this, $sid, $strategy, $mask, $granting, false, false);
$this->onPropertyChanged($property, $oldValue, $this->$property);
}
/**
* Inserts a field-based ACE
*
* @param string $property
* @param integer $index
* @param string $field
* @param integer $mask
* @param SecurityIdentityInterface $sid
* @param Boolean $granting
* @param string $strategy
* @throws \InvalidArgumentException
* @throws \OutOfBoundsException
*/
private function insertFieldAce($property, $index, $field, $mask, SecurityIdentityInterface $sid, $granting, $strategy = null)
{
if (0 === strlen($field)) {
throw new \InvalidArgumentException('$field cannot be empty.');
}
if (!is_int($mask)) {
throw new \InvalidArgumentException('$mask must be an integer.');
}
if (null === $strategy) {
if (true === $granting) {
$strategy = PermissionGrantingStrategy::ALL;
} else {
$strategy = PermissionGrantingStrategy::ANY;
}
}
$aces =& $this->$property;
if (!isset($aces[$field])) {
$aces[$field] = array();
}
if ($index < 0 || $index > count($aces[$field])) {
throw new \OutOfBoundsException(sprintf('The index must be in the interval [0, %d].', count($this->$property)));
}
$oldValue = $aces;
if (isset($aces[$field][$index])) {
$aces[$field] = array_merge(
array_slice($aces[$field], 0, $index),
array(true),
array_slice($aces[$field], $index)
);
for ($i=$index,$c=count($aces[$field])-1; $i<$c; $i++) {
$this->onEntryPropertyChanged($aces[$field][$i+1], 'aceOrder', $i, $i+1);
}
}
$aces[$field][$index] = new FieldEntry(null, $this, $field, $sid, $strategy, $mask, $granting, false, false);
$this->onPropertyChanged($property, $oldValue, $this->$property);
}
/**
* Updates an ACE
*
* @param string $property
* @param integer $index
* @param integer $mask
* @param string $strategy
* @throws \OutOfBoundsException
*/
private function updateAce($property, $index, $mask, $strategy = null)
{
$aces =& $this->$property;
if (!isset($aces[$index])) {
throw new \OutOfBoundsException(sprintf('The index "%d" does not exist.', $index));
}
$ace = $aces[$index];
if ($mask !== $oldMask = $ace->getMask()) {
$this->onEntryPropertyChanged($ace, 'mask', $oldMask, $mask);
$ace->setMask($mask);
}
if (null !== $strategy && $strategy !== $oldStrategy = $ace->getStrategy()) {
$this->onEntryPropertyChanged($ace, 'strategy', $oldStrategy, $strategy);
$ace->setStrategy($strategy);
}
}
/**
* Updates auditing for an ACE
*
* @param array &$aces
* @param integer $index
* @param Boolean $auditSuccess
* @param Boolean $auditFailure
* @throws \OutOfBoundsException
*/
private function updateAuditing(array &$aces, $index, $auditSuccess, $auditFailure)
{
if (!isset($aces[$index])) {
throw new \OutOfBoundsException(sprintf('The index "%d" does not exist.', $index));
}
if ($auditSuccess !== $aces[$index]->isAuditSuccess()) {
$this->onEntryPropertyChanged($aces[$index], 'auditSuccess', !$auditSuccess, $auditSuccess);
$aces[$index]->setAuditSuccess($auditSuccess);
}
if ($auditFailure !== $aces[$index]->isAuditFailure()) {
$this->onEntryPropertyChanged($aces[$index], 'auditFailure', !$auditFailure, $auditFailure);
$aces[$index]->setAuditFailure($auditFailure);
}
}
/**
* Updates a field-based ACE
*
* @param string $property
* @param integer $index
* @param string $field
* @param integer $mask
* @param string $strategy
* @throws \InvalidArgumentException
* @throws \OutOfBoundsException
*/
private function updateFieldAce($property, $index, $field, $mask, $strategy = null)
{
if (0 === strlen($field)) {
throw new \InvalidArgumentException('$field cannot be empty.');
}
$aces =& $this->$property;
if (!isset($aces[$field][$index])) {
throw new \OutOfBoundsException(sprintf('The index "%d" does not exist.', $index));
}
$ace = $aces[$field][$index];
if ($mask !== $oldMask = $ace->getMask()) {
$this->onEntryPropertyChanged($ace, 'mask', $oldMask, $mask);
$ace->setMask($mask);
}
if (null !== $strategy && $strategy !== $oldStrategy = $ace->getStrategy()) {
$this->onEntryPropertyChanged($ace, 'strategy', $oldStrategy, $strategy);
$ace->setStrategy($strategy);
}
}
/**
* Called when a property of the ACL changes
*
* @param string $name
* @param mixed $oldValue
* @param mixed $newValue
*/
private function onPropertyChanged($name, $oldValue, $newValue)
{
foreach ($this->listeners as $listener) {
$listener->propertyChanged($this, $name, $oldValue, $newValue);
}
}
/**
* Called when a property of an ACE associated with this ACL changes
*
* @param EntryInterface $entry
* @param string $name
* @param mixed $oldValue
* @param mixed $newValue
*/
private function onEntryPropertyChanged(EntryInterface $entry, $name, $oldValue, $newValue)
{
foreach ($this->listeners as $listener) {
$listener->propertyChanged($entry, $name, $oldValue, $newValue);
}
}
}
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