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|
<?php
/* Icinga Web 2 | (c) 2016 Icinga Development Team | GPLv2+ */
namespace Icinga\Authentication;
class Role
{
/**
* Name of the role
*
* @var string
*/
protected $name;
/**
* The role from which to inherit privileges
*
* @var Role
*/
protected $parent;
/**
* The roles to which privileges are inherited
*
* @var Role[]
*/
protected $children;
/**
* Whether restrictions should not apply to owners of the role
*
* @var bool
*/
protected $unrestricted = false;
/**
* Permissions of the role
*
* @var string[]
*/
protected $permissions = [];
/**
* Refusals of the role
*
* @var string[]
*/
protected $refusals = [];
/**
* Restrictions of the role
*
* @var string[]
*/
protected $restrictions = [];
/**
* Get the name of the role
*
* @return string
*/
public function getName()
{
return $this->name;
}
/**
* Set the name of the role
*
* @param string $name
*
* @return $this
*/
public function setName($name)
{
$this->name = $name;
return $this;
}
/**
* Get the role from which privileges are inherited
*
* @return Role
*/
public function getParent()
{
return $this->parent;
}
/**
* Set the role from which to inherit privileges
*
* @param Role $parent
*
* @return $this
*/
public function setParent(Role $parent)
{
$this->parent = $parent;
return $this;
}
/**
* Get the roles to which privileges are inherited
*
* @return Role[]
*/
public function getChildren()
{
return $this->children;
}
/**
* Set the roles to which inherit privileges
*
* @param Role[] $children
*
* @return $this
*/
public function setChildren(array $children)
{
$this->children = $children;
return $this;
}
/**
* Add a role to which inherit privileges
*
* @param Role $role
*
* @return $this
*/
public function addChild(Role $role)
{
$this->children[] = $role;
return $this;
}
/**
* Get whether restrictions should not apply to owners of the role
*
* @return bool
*/
public function isUnrestricted()
{
return $this->unrestricted;
}
/**
* Set whether restrictions should not apply to owners of the role
*
* @param bool $state
*
* @return $this
*/
public function setIsUnrestricted($state)
{
$this->unrestricted = (bool) $state;
return $this;
}
/**
* Get the permissions of the role
*
* @return string[]
*/
public function getPermissions()
{
return $this->permissions;
}
/**
* Set the permissions of the role
*
* @param string[] $permissions
*
* @return $this
*/
public function setPermissions(array $permissions)
{
$this->permissions = $permissions;
return $this;
}
/**
* Get the refusals of the role
*
* @return string[]
*/
public function getRefusals()
{
return $this->refusals;
}
/**
* Set the refusals of the role
*
* @param array $refusals
*
* @return $this
*/
public function setRefusals(array $refusals)
{
$this->refusals = $refusals;
return $this;
}
/**
* Get the restrictions of the role
*
* @param string $name Optional name of the restriction
*
* @return string[]|null
*/
public function getRestrictions($name = null)
{
$restrictions = $this->restrictions;
if ($name === null) {
return $restrictions;
}
if (isset($restrictions[$name])) {
return $restrictions[$name];
}
return null;
}
/**
* Set the restrictions of the role
*
* @param string[] $restrictions
*
* @return $this
*/
public function setRestrictions(array $restrictions)
{
$this->restrictions = $restrictions;
return $this;
}
/**
* Whether this role grants the given permission
*
* @param string $permission
* @param bool $ignoreParent Only evaluate the role's own permissions
* @param bool $cascadeUpwards `false` if `foo/bar/*` and `foo/bar/raboof` should not match `foo/*`
*
* @return bool
*/
public function grants($permission, $ignoreParent = false, $cascadeUpwards = true)
{
foreach ($this->permissions as $grantedPermission) {
if ($this->match($grantedPermission, $permission, $cascadeUpwards)) {
return true;
}
}
if (! $ignoreParent && $this->getParent() !== null) {
return $this->getParent()->grants($permission, false, $cascadeUpwards);
}
return false;
}
/**
* Whether this role denies the given permission
*
* @param string $permission
* @param bool $ignoreParent Only evaluate the role's own refusals
*
* @return bool
*/
public function denies($permission, $ignoreParent = false)
{
foreach ($this->refusals as $refusedPermission) {
if ($this->match($refusedPermission, $permission, false)) {
return true;
}
}
if (! $ignoreParent && $this->getParent() !== null) {
return $this->getParent()->denies($permission);
}
return false;
}
/**
* Get whether the role expression matches the required permission
*
* @param string $roleExpression
* @param string $requiredPermission
* @param bool $cascadeUpwards `false` if `foo/bar/*` and `foo/bar/raboof` should not match `foo/*`
*
* @return bool
*/
protected function match($roleExpression, $requiredPermission, $cascadeUpwards = true)
{
if ($roleExpression === '*' || $roleExpression === $requiredPermission) {
return true;
}
$requiredWildcard = strpos($requiredPermission, '*');
if ($requiredWildcard !== false) {
if (($grantedWildcard = strpos($roleExpression, '*')) !== false) {
$wildcard = $cascadeUpwards ? min($requiredWildcard, $grantedWildcard) : $grantedWildcard;
} else {
$wildcard = $cascadeUpwards ? $requiredWildcard : false;
}
} else {
$wildcard = strpos($roleExpression, '*');
}
if ($wildcard !== false && $wildcard > 0) {
if (substr($requiredPermission, 0, $wildcard) === substr($roleExpression, 0, $wildcard)) {
return true;
}
} elseif ($requiredPermission === $roleExpression) {
return true;
}
return false;
}
}
|
