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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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abstract class RoleConfigurationBase |
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{ |
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const ACCESS_ALLOW = 1; |
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const ACCESS_DENY = -1; |
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const ACCESS_DEFAULT = 0; |
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const MAIN = 'main'; |
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const ALL = '*'; |
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protected array $roleConfig; |
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protected array $identificationExempt; |
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protected function __construct(array $roleConfig, array $identificationExempt) |
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{ |
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$this->roleConfig = $roleConfig; |
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$this->identificationExempt = $identificationExempt; |
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} |
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/** |
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* Takes an array of role names and flattens the values to a single |
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* resultant role configuration. |
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* |
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* @param string[] $activeRoles |
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* @category Security-Critical |
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*/ |
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public function getResultantRole(array $activeRoles): array |
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{ |
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$result = array(); |
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$roleConfig = $this->getApplicableRoles($activeRoles); |
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// Iterate over every page in every role |
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foreach ($roleConfig as $role) { |
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foreach ($role as $page => $pageRights) { |
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// Create holder in result for this page |
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if (!isset($result[$page])) { |
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$result[$page] = array(); |
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} |
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foreach ($pageRights as $action => $permission) { |
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// Deny takes precedence, so if it's set, don't change it. |
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if (isset($result[$page][$action])) { |
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if ($result[$page][$action] === RoleConfigurationBase::ACCESS_DENY) { |
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continue; |
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} |
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} |
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if ($permission === RoleConfigurationBase::ACCESS_DEFAULT) { |
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// Configured to do precisely nothing. |
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continue; |
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} |
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$result[$page][$action] = $permission; |
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} |
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} |
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} |
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return $result; |
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} |
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/** |
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* Returns a set of all roles which are available to be set. |
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* |
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* Hidden roles and implicit roles are excluded. |
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*/ |
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public function getAvailableRoles(): array |
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{ |
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// remove the implicit roles |
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$possible = array_diff(array_keys($this->roleConfig), array('public', 'loggedIn', 'user')); |
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$actual = array(); |
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foreach ($possible as $role) { |
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if (!isset($this->roleConfig[$role]['_hidden'])) { |
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$actual[$role] = array( |
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'description' => $this->roleConfig[$role]['_description'], |
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'editableBy' => $this->roleConfig[$role]['_editableBy'], |
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'globalOnly' => isset($this->roleConfig[$role]['_globalOnly']) && $this->roleConfig[$role]['_globalOnly'], |
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); |
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} |
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} |
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return $actual; |
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} |
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/** |
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* Returns a boolean for whether the provided role requires identification |
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* before being used by a user. |
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* |
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* @category Security-Critical |
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*/ |
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public function roleNeedsIdentification(string $role): bool |
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{ |
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if (in_array($role, $this->identificationExempt)) { |
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return false; |
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} |
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return true; |
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} |
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/** |
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* Takes an array of role names, and returns all the relevant roles for that |
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* set, including any child roles found recursively. |
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* |
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* @param array $roles The names of roles to start searching with |
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*/ |
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private function getApplicableRoles(array $roles): array |
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{ |
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$available = array(); |
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foreach ($roles as $role) { |
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if (!isset($this->roleConfig[$role])) { |
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// wat |
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continue; |
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} |
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$available[$role] = $this->roleConfig[$role]; |
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if (isset($available[$role]['_childRoles'])) { |
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$childRoles = $this->getApplicableRoles($available[$role]['_childRoles']); |
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$available = array_merge($available, $childRoles); |
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unset($available[$role]['_childRoles']); |
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} |
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foreach (array('_hidden', '_editableBy', '_description') as $item) { |
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if (isset($available[$role][$item])) { |
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unset($available[$role][$item]); |
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} |
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} |
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} |
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return $available; |
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} |
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} |
enwikipedia-acc /
waca
