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<?php |
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/****************************************************************************** |
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* Wikipedia Account Creation Assistance tool * |
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* * |
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* All code in this file is released into the public domain by the ACC * |
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* Development Team. Please see team.json for a list of contributors. * |
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******************************************************************************/ |
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namespace Waca\Security; |
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use Waca\DataObjects\Domain; |
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use Waca\DataObjects\User; |
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use Waca\DataObjects\UserRole; |
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use Waca\IIdentificationVerifier; |
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final class SecurityManager implements ISecurityManager |
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{ |
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private IIdentificationVerifier $identificationVerifier; |
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private RoleConfigurationBase $roleConfiguration; |
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private array $cache = []; |
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private IUserAccessLoader $userAccessLoader; |
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public function __construct( |
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IIdentificationVerifier $identificationVerifier, |
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RoleConfigurationBase $roleConfiguration, |
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IUserAccessLoader $userAccessLoader |
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) { |
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$this->identificationVerifier = $identificationVerifier; |
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$this->roleConfiguration = $roleConfiguration; |
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$this->userAccessLoader = $userAccessLoader; |
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} |
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/** |
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* Tests if a user is allowed to perform an action. |
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* |
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* This method should form a hard, deterministic security barrier, and only return true if it is absolutely sure |
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* that a user should have access to something. |
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* |
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* @category Security-Critical |
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*/ |
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public function allows(string $page, string $route, User $user): int |
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{ |
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$this->getCachedActiveRoles($user, $activeRoles, $inactiveRoles); |
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$availableRights = $this->roleConfiguration->getResultantRole($activeRoles); |
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$testResult = $this->findResult($availableRights, $page, $route); |
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if ($testResult !== null) { |
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// We got a firm result here, so just return it. |
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return $testResult; |
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} |
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// No firm result yet, so continue testing the inactive roles so we can give a better error. |
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$inactiveRights = $this->roleConfiguration->getResultantRole($inactiveRoles); |
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$testResult = $this->findResult($inactiveRights, $page, $route); |
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if ($testResult === self::ALLOWED) { |
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// The user is allowed to access this, but their role is inactive. |
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return self::ERROR_NOT_IDENTIFIED; |
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} |
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// Other options from the secondary test are denied and inconclusive, which at this point defaults to denied. |
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return self::ERROR_DENIED; |
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} |
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public function getActiveRoles(User $user, ?array &$activeRoles, ?array &$inactiveRoles) |
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{ |
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// Default to the community user here, because the main user is logged out |
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$identified = false; |
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$userRoles = array('public'); |
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// if we're not the community user, get our real rights. |
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if (!$user->isCommunityUser()) { |
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// Check the user's status - only active users are allowed the effects of roles |
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$userRoles[] = 'loggedIn'; |
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if ($user->isActive()) { |
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// All active users get +user |
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$userRoles[] = 'user'; |
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$loadedRoles = $this->userAccessLoader->loadRolesForUser($user); |
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// NOTE: public is still in this array. |
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$userRoles = array_merge($userRoles, $loadedRoles); |
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$identified = $this->userIsIdentified($user); |
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} |
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} |
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$activeRoles = array(); |
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$inactiveRoles = array(); |
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foreach ($userRoles as $v) { |
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if ($this->roleConfiguration->roleNeedsIdentification($v)) { |
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if ($identified) { |
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$activeRoles[] = $v; |
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} |
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else { |
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$inactiveRoles[] = $v; |
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} |
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} |
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else { |
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$activeRoles[] = $v; |
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} |
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} |
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} |
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public function getCachedActiveRoles(User $user, ?array &$activeRoles, ?array &$inactiveRoles): void |
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{ |
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if (!array_key_exists($user->getId(), $this->cache)) { |
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$this->getActiveRoles($user, $retrievedActiveRoles, $retrievedInactiveRoles); |
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$this->cache[$user->getId()] = ['active' => $retrievedActiveRoles, 'inactive' => $retrievedInactiveRoles]; |
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} |
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$activeRoles = $this->cache[$user->getId()]['active']; |
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$inactiveRoles = $this->cache[$user->getId()]['inactive']; |
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} |
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public function getAvailableRoles(): array |
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{ |
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return $this->roleConfiguration->getAvailableRoles(); |
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} |
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/** |
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* Tests a role for an ACL decision on a specific page/route |
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* |
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* @param array $pseudoRole The role (flattened) to check |
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* @param string $page The page class to check |
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* @param string $route The page route to check |
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* |
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* @return int|null |
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*/ |
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private function findResult($pseudoRole, $page, $route) |
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{ |
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if (isset($pseudoRole[$page])) { |
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// check for deny on catch-all route |
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if (isset($pseudoRole[$page][RoleConfigurationBase::ALL])) { |
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if ($pseudoRole[$page][RoleConfigurationBase::ALL] === RoleConfigurationBase::ACCESS_DENY) { |
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return self::ERROR_DENIED; |
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} |
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} |
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// check normal route |
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if (isset($pseudoRole[$page][$route])) { |
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if ($pseudoRole[$page][$route] === RoleConfigurationBase::ACCESS_DENY) { |
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return self::ERROR_DENIED; |
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} |
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if ($pseudoRole[$page][$route] === RoleConfigurationBase::ACCESS_ALLOW) { |
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return self::ALLOWED; |
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} |
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} |
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// check for allowed on catch-all route |
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if (isset($pseudoRole[$page][RoleConfigurationBase::ALL])) { |
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if ($pseudoRole[$page][RoleConfigurationBase::ALL] === RoleConfigurationBase::ACCESS_ALLOW) { |
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return self::ALLOWED; |
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} |
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} |
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} |
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// return indeterminate result |
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return null; |
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} |
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private function userIsIdentified(User $user): bool |
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{ |
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if ($user->getForceIdentified() === false) { |
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// User forced to be unidentified in the database. |
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return false; |
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} |
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if ($user->getForceIdentified() === true) { |
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// User forced to be identified in the database. |
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return true; |
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} |
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// User not forced to any particular identified status; consult IdentificationVerifier |
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return $this->identificationVerifier->isUserIdentified($user->getOnWikiName()); |
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} |
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} |
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enwikipedia-acc /
waca
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