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RoleService.php
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RoleService.php
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<?php
/*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*
* This software consists of voluntary contributions made by many individuals
* and is licensed under the MIT license.
*/
namespace ZfcRbac\Service;
use Rbac\Role\HierarchicalRoleInterface;
use Rbac\Role\RoleInterface;
use RecursiveIteratorIterator;
use Traversable;
use ZfcRbac\Exception;
use ZfcRbac\Identity\IdentityInterface;
use ZfcRbac\Identity\IdentityProviderInterface;
use ZfcRbac\Role\RoleProviderInterface;
use Rbac\Traversal\Strategy\TraversalStrategyInterface;
/**
* Role service
*
* @author Michaël Gallego <mic.gallego@gmail.com>
* @licence MIT
*/
class RoleService
{
/**
* @var IdentityProviderInterface
*/
protected $identityProvider;
/**
* @var RoleProviderInterface
*/
protected $roleProvider;
/**
* @var TraversalStrategyInterface
*/
protected $traversalStrategy;
/**
* @var string
*/
protected $guestRole = '';
/**
* Constructor
*
* @param IdentityProviderInterface $identityProvider
* @param RoleProviderInterface $roleProvider
* @param TraversalStrategyInterface $traversalStrategy
*/
public function __construct(
IdentityProviderInterface $identityProvider,
RoleProviderInterface $roleProvider,
TraversalStrategyInterface $traversalStrategy
) {
$this->identityProvider = $identityProvider;
$this->roleProvider = $roleProvider;
$this->traversalStrategy = $traversalStrategy;
}
/**
* Set the identity provider
*
* @param IdentityProviderInterface $identityProvider
*/
public function setIdentityProvider(IdentityProviderInterface $identityProvider)
{
$this->identityProvider = $identityProvider;
}
/**
* Set the role provider
*
* @param RoleProviderInterface $roleProvider
*/
public function setRoleProvider(RoleProviderInterface $roleProvider)
{
$this->roleProvider = $roleProvider;
}
/**
* Set the guest role
*
* @param string $guestRole
* @return void
*/
public function setGuestRole($guestRole)
{
$this->guestRole = (string) $guestRole;
}
/**
* Get the guest role
*
* @return string
*/
public function getGuestRole()
{
return $this->guestRole;
}
/**
* Get the current identity from the identity provider
*
* @return IdentityInterface|null
*/
public function getIdentity()
{
return $this->identityProvider->getIdentity();
}
/**
* Get the identity roles from the current identity, applying some more logic
*
* @return RoleInterface[]
* @throws Exception\RuntimeException
*/
public function getIdentityRoles()
{
if (!$identity = $this->getIdentity()) {
return $this->convertRoles([$this->guestRole]);
}
if (!$identity instanceof IdentityInterface) {
throw new Exception\RuntimeException(sprintf(
'ZfcRbac expects your identity to implement ZfcRbac\Identity\IdentityInterface, "%s" given',
is_object($identity) ? get_class($identity) : gettype($identity)
));
}
return $this->convertRoles($identity->getRoles());
}
/**
* Check if the given roles match one of the identity roles
*
* This method is smart enough to automatically recursively extracts roles for hierarchical roles
*
* @param string[]|RoleInterface[] $roles
* @return bool
*/
public function matchIdentityRoles(array $roles)
{
$identityRoles = $this->getIdentityRoles();
// Too easy...
if (empty($identityRoles)) {
return false;
}
$roleNames = [];
foreach ($roles as $role) {
$roleNames[] = $role instanceof RoleInterface ? $role->getName() : (string) $role;
}
$identityRoles = $this->flattenRoles($identityRoles);
return count(array_intersect($roleNames, $identityRoles)) > 0;
}
/**
* Convert the roles (potentially strings) to concrete RoleInterface objects using role provider
*
* @param array|Traversable $roles
* @return RoleInterface[]
*/
protected function convertRoles($roles)
{
if ($roles instanceof Traversable) {
$roles = iterator_to_array($roles);
}
$collectedRoles = [];
$toCollect = [];
foreach ((array) $roles as $role) {
// If it's already a RoleInterface, nothing to do as a RoleInterface contains everything already
if ($role instanceof RoleInterface) {
$collectedRoles[] = $role;
continue;
}
// Otherwise, it's a string and hence we need to collect it
$toCollect[] = (string) $role;
}
// Nothing to collect, we don't even need to hit the (potentially) costly role provider
if (empty($toCollect)) {
return $collectedRoles;
}
return array_merge($collectedRoles, $this->roleProvider->getRoles($toCollect));
}
/**
* Flatten an array of role with role names
*
* This method iterates through the list of roles, and convert any RoleInterface to a string. For any
* role, it also extracts all the children
*
* @param array|RoleInterface[] $roles
* @return string[]
*/
protected function flattenRoles(array $roles)
{
$roleNames = [];
$iterator = $this->traversalStrategy->getRolesIterator($roles);
foreach ($iterator as $role) {
$roleNames[] = $role->getName();
}
return array_unique($roleNames);
}
}