mirror of
https://github.com/BookStackApp/BookStack.git
synced 2024-08-26 20:22:18 +00:00
199 lines
7.8 KiB
PHP
199 lines
7.8 KiB
PHP
<?php
|
|
|
|
namespace BookStack\Auth\Permissions;
|
|
|
|
use BookStack\Auth\Role;
|
|
use BookStack\Auth\User;
|
|
use BookStack\Entities\Models\Entity;
|
|
use BookStack\Entities\Models\Page;
|
|
use BookStack\Model;
|
|
use BookStack\Traits\HasCreatorAndUpdater;
|
|
use BookStack\Traits\HasOwner;
|
|
use Illuminate\Database\Eloquent\Builder;
|
|
use Illuminate\Database\Query\Builder as QueryBuilder;
|
|
use InvalidArgumentException;
|
|
|
|
class PermissionApplicator
|
|
{
|
|
/**
|
|
* Checks if an entity has a restriction set upon it.
|
|
*
|
|
* @param HasCreatorAndUpdater|HasOwner $ownable
|
|
*/
|
|
public function checkOwnableUserAccess(Model $ownable, string $permission): bool
|
|
{
|
|
$explodedPermission = explode('-', $permission);
|
|
$action = $explodedPermission[1] ?? $explodedPermission[0];
|
|
$fullPermission = count($explodedPermission) > 1 ? $permission : $ownable->getMorphClass() . '-' . $permission;
|
|
|
|
$user = $this->currentUser();
|
|
$userRoleIds = $this->getCurrentUserRoleIds();
|
|
|
|
$allRolePermission = $user->can($fullPermission . '-all');
|
|
$ownRolePermission = $user->can($fullPermission . '-own');
|
|
$nonJointPermissions = ['restrictions', 'image', 'attachment', 'comment'];
|
|
$ownerField = ($ownable instanceof Entity) ? 'owned_by' : 'created_by';
|
|
$ownableFieldVal = $ownable->getAttribute($ownerField);
|
|
|
|
if (is_null($ownableFieldVal)) {
|
|
throw new InvalidArgumentException("{$ownerField} field used but has not been loaded");
|
|
}
|
|
|
|
$isOwner = $user->id === $ownableFieldVal;
|
|
$hasRolePermission = $allRolePermission || ($isOwner && $ownRolePermission);
|
|
|
|
// Handle non entity specific jointPermissions
|
|
if (in_array($explodedPermission[0], $nonJointPermissions)) {
|
|
return $hasRolePermission;
|
|
}
|
|
|
|
$hasApplicableEntityPermissions = $this->hasEntityPermission($ownable, $userRoleIds, $action);
|
|
|
|
return is_null($hasApplicableEntityPermissions) ? $hasRolePermission : $hasApplicableEntityPermissions;
|
|
}
|
|
|
|
/**
|
|
* Check if there are permissions that are applicable for the given entity item, action and roles.
|
|
* Returns null when no entity permissions are in force.
|
|
*/
|
|
protected function hasEntityPermission(Entity $entity, array $userRoleIds, string $action): ?bool
|
|
{
|
|
$this->ensureValidEntityAction($action);
|
|
|
|
return (new EntityPermissionEvaluator($action))->evaluateEntityForUser($entity, $userRoleIds);
|
|
}
|
|
|
|
/**
|
|
* Checks if a user has the given permission for any items in the system.
|
|
* Can be passed an entity instance to filter on a specific type.
|
|
*/
|
|
public function checkUserHasEntityPermissionOnAny(string $action, string $entityClass = ''): bool
|
|
{
|
|
$this->ensureValidEntityAction($action);
|
|
|
|
$permissionQuery = EntityPermission::query()
|
|
->where($action, '=', true)
|
|
->whereIn('role_id', $this->getCurrentUserRoleIds());
|
|
|
|
if (!empty($entityClass)) {
|
|
/** @var Entity $entityInstance */
|
|
$entityInstance = app()->make($entityClass);
|
|
$permissionQuery = $permissionQuery->where('entity_type', '=', $entityInstance->getMorphClass());
|
|
}
|
|
|
|
$hasPermission = $permissionQuery->count() > 0;
|
|
|
|
return $hasPermission;
|
|
}
|
|
|
|
/**
|
|
* Limit the given entity query so that the query will only
|
|
* return items that the user has view permission for.
|
|
*/
|
|
public function restrictEntityQuery(Builder $query): Builder
|
|
{
|
|
return $query->where(function (Builder $parentQuery) {
|
|
$parentQuery->whereHas('jointPermissions', function (Builder $permissionQuery) {
|
|
$permissionQuery->select(['entity_id', 'entity_type'])
|
|
->selectRaw('max(owner_id) as owner_id')
|
|
->selectRaw('max(status) as status')
|
|
->whereIn('role_id', $this->getCurrentUserRoleIds())
|
|
->groupBy(['entity_type', 'entity_id'])
|
|
->havingRaw('(status IN (1, 3) or (owner_id = ? and status != 2))', [$this->currentUser()->id]);
|
|
});
|
|
});
|
|
}
|
|
|
|
/**
|
|
* Extend the given page query to ensure draft items are not visible
|
|
* unless created by the given user.
|
|
*/
|
|
public function restrictDraftsOnPageQuery(Builder $query): Builder
|
|
{
|
|
return $query->where(function (Builder $query) {
|
|
$query->where('draft', '=', false)
|
|
->orWhere(function (Builder $query) {
|
|
$query->where('draft', '=', true)
|
|
->where('owned_by', '=', $this->currentUser()->id);
|
|
});
|
|
});
|
|
}
|
|
|
|
/**
|
|
* Filter items that have entities set as a polymorphic relation.
|
|
* For simplicity, this will not return results attached to draft pages.
|
|
* Draft pages should never really have related items though.
|
|
*/
|
|
public function restrictEntityRelationQuery(Builder $query, string $tableName, string $entityIdColumn, string $entityTypeColumn): Builder
|
|
{
|
|
$tableDetails = ['tableName' => $tableName, 'entityIdColumn' => $entityIdColumn, 'entityTypeColumn' => $entityTypeColumn];
|
|
$pageMorphClass = (new Page())->getMorphClass();
|
|
|
|
return $this->restrictEntityQuery($query)
|
|
->where(function ($query) use ($tableDetails, $pageMorphClass) {
|
|
/** @var Builder $query */
|
|
$query->where($tableDetails['entityTypeColumn'], '!=', $pageMorphClass)
|
|
->orWhereExists(function (QueryBuilder $query) use ($tableDetails, $pageMorphClass) {
|
|
$query->select('id')->from('pages')
|
|
->whereColumn('pages.id', '=', $tableDetails['tableName'] . '.' . $tableDetails['entityIdColumn'])
|
|
->where($tableDetails['tableName'] . '.' . $tableDetails['entityTypeColumn'], '=', $pageMorphClass)
|
|
->where('pages.draft', '=', false);
|
|
});
|
|
});
|
|
}
|
|
|
|
/**
|
|
* Add conditions to a query for a model that's a relation of a page, so only the model results
|
|
* on visible pages are returned by the query.
|
|
* Is effectively the same as "restrictEntityRelationQuery" but takes into account page drafts
|
|
* while not expecting a polymorphic relation, Just a simpler one-page-to-many-relations set-up.
|
|
*/
|
|
public function restrictPageRelationQuery(Builder $query, string $tableName, string $pageIdColumn): Builder
|
|
{
|
|
$fullPageIdColumn = $tableName . '.' . $pageIdColumn;
|
|
return $this->restrictEntityQuery($query)
|
|
->where(function ($query) use ($fullPageIdColumn) {
|
|
/** @var Builder $query */
|
|
$query->whereExists(function (QueryBuilder $query) use ($fullPageIdColumn) {
|
|
$query->select('id')->from('pages')
|
|
->whereColumn('pages.id', '=', $fullPageIdColumn)
|
|
->where('pages.draft', '=', false);
|
|
});
|
|
});
|
|
}
|
|
|
|
/**
|
|
* Get the current user.
|
|
*/
|
|
protected function currentUser(): User
|
|
{
|
|
return user();
|
|
}
|
|
|
|
/**
|
|
* Get the roles for the current logged-in user.
|
|
*
|
|
* @return int[]
|
|
*/
|
|
protected function getCurrentUserRoleIds(): array
|
|
{
|
|
if (auth()->guest()) {
|
|
return [Role::getSystemRole('public')->id];
|
|
}
|
|
|
|
return $this->currentUser()->roles->pluck('id')->values()->all();
|
|
}
|
|
|
|
/**
|
|
* Ensure the given action is a valid and expected entity action.
|
|
* Throws an exception if invalid otherwise does nothing.
|
|
* @throws InvalidArgumentException
|
|
*/
|
|
protected function ensureValidEntityAction(string $action): void
|
|
{
|
|
if (!in_array($action, EntityPermission::PERMISSIONS)) {
|
|
throw new InvalidArgumentException('Action should be a simple entity permission action, not a role permission');
|
|
}
|
|
}
|
|
}
|