mirror of
https://github.com/BookStackApp/BookStack.git
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452 lines
17 KiB
PHP
452 lines
17 KiB
PHP
<?php namespace BookStack\Services;
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use BookStack\Book;
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use BookStack\Chapter;
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use BookStack\Entity;
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use BookStack\EntityPermission;
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use BookStack\Page;
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use BookStack\Role;
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use Illuminate\Database\Eloquent\Collection;
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class RestrictionService
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{
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protected $userRoles;
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protected $isAdmin;
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protected $currentAction;
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protected $currentUser;
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public $book;
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public $chapter;
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public $page;
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protected $entityPermission;
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protected $role;
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/**
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* The actions that have permissions attached throughout the application.
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* @var array
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*/
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protected $actions = ['view', 'create', 'update', 'delete'];
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/**
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* RestrictionService constructor.
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* @param EntityPermission $entityPermission
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* @param Book $book
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* @param Chapter $chapter
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* @param Page $page
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* @param Role $role
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*/
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public function __construct(EntityPermission $entityPermission, Book $book, Chapter $chapter, Page $page, Role $role)
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{
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$this->currentUser = auth()->user();
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$this->userRoles = $this->currentUser ? $this->currentUser->roles->pluck('id') : [];
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$this->isAdmin = $this->currentUser ? $this->currentUser->hasRole('admin') : false;
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$this->entityPermission = $entityPermission;
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$this->role = $role;
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$this->book = $book;
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$this->chapter = $chapter;
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$this->page = $page;
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}
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/**
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* Re-generate all entity permission from scratch.
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*/
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public function buildEntityPermissions()
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{
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$this->entityPermission->truncate();
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// Get all roles (Should be the most limited dimension)
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$roles = $this->role->load('permissions')->all();
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// Chunk through all books
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$this->book->chunk(500, function ($books) use ($roles) {
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$this->createManyEntityPermissions($books, $roles);
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});
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// Chunk through all chapters
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$this->chapter->with('book')->chunk(500, function ($books) use ($roles) {
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$this->createManyEntityPermissions($books, $roles);
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});
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// Chunk through all pages
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$this->page->with('book', 'chapter')->chunk(500, function ($books) use ($roles) {
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$this->createManyEntityPermissions($books, $roles);
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});
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}
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/**
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* Create the entity permissions for a particular entity.
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* @param Entity $entity
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*/
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public function buildEntityPermissionsForEntity(Entity $entity)
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{
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$roles = $this->role->load('permissions')->all();
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$entities = collect([$entity]);
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if ($entity->isA('book')) {
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$entities = $entities->merge($entity->chapters);
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$entities = $entities->merge($entity->pages);
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} elseif ($entity->isA('chapter')) {
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$entities = $entities->merge($entity->pages);
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}
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$this->deleteManyEntityPermissionsForEntities($entities);
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$this->createManyEntityPermissions($entities, $roles);
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}
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/**
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* Build the entity permissions for a particular role.
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* @param Role $role
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*/
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public function buildEntityPermissionForRole(Role $role)
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{
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$roles = collect([$role]);
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$this->deleteManyEntityPermissionsForRoles($roles);
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// Chunk through all books
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$this->book->chunk(500, function ($books) use ($roles) {
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$this->createManyEntityPermissions($books, $roles);
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});
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// Chunk through all chapters
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$this->chapter->with('book')->chunk(500, function ($books) use ($roles) {
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$this->createManyEntityPermissions($books, $roles);
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});
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// Chunk through all pages
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$this->page->with('book', 'chapter')->chunk(500, function ($books) use ($roles) {
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$this->createManyEntityPermissions($books, $roles);
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});
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}
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/**
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* Delete the entity permissions attached to a particular role.
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* @param Role $role
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*/
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public function deleteEntityPermissionsForRole(Role $role)
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{
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$this->deleteManyEntityPermissionsForRoles([$role]);
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}
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/**
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* Delete all of the entity permissions for a list of entities.
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* @param Role[] $roles
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*/
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protected function deleteManyEntityPermissionsForRoles($roles)
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{
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foreach ($roles as $role) {
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$role->entityPermissions()->delete();
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}
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}
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/**
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* Delete the entity permissions for a particular entity.
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* @param Entity $entity
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*/
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public function deleteEntityPermissionsForEntity(Entity $entity)
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{
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$this->deleteManyEntityPermissionsForEntities([$entity]);
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}
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/**
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* Delete all of the entity permissions for a list of entities.
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* @param Entity[] $entities
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*/
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protected function deleteManyEntityPermissionsForEntities($entities)
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{
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foreach ($entities as $entity) {
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$entity->permissions()->delete();
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}
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}
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/**
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* Create & Save entity permissions for many entities and permissions.
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* @param Collection $entities
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* @param Collection $roles
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*/
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protected function createManyEntityPermissions($entities, $roles)
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{
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$entityPermissions = [];
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foreach ($entities as $entity) {
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foreach ($roles as $role) {
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foreach ($this->actions as $action) {
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$entityPermissions[] = $this->createEntityPermissionData($entity, $role, $action);
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}
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}
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}
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\Log::info(collect($entityPermissions)->where('entity_id', 1)->where('entity_type', 'BookStack\\Page')->where('role_id', 2)->all());
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$this->entityPermission->insert($entityPermissions);
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}
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/**
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* Create entity permission data for an entity and role
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* for a particular action.
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* @param Entity $entity
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* @param Role $role
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* @param $action
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* @return array
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*/
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protected function createEntityPermissionData(Entity $entity, Role $role, $action)
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{
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$permissionPrefix = $entity->getType() . '-' . $action;
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$roleHasPermission = $role->hasPermission($permissionPrefix . '-all');
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$roleHasPermissionOwn = $role->hasPermission($permissionPrefix . '-own');
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if ($entity->isA('book')) {
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if (!$entity->restricted) {
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return $this->createEntityPermissionDataArray($entity, $role, $action, $roleHasPermission, $roleHasPermissionOwn);
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} else {
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$hasAccess = $entity->hasActiveRestriction($role->id, $action);
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return $this->createEntityPermissionDataArray($entity, $role, $action, $hasAccess, $hasAccess);
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}
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} elseif ($entity->isA('chapter')) {
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if (!$entity->restricted) {
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$hasExplicitAccessToBook = $entity->book->hasActiveRestriction($role->id, $action);
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$hasPermissiveAccessToBook = !$entity->book->restricted;
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return $this->createEntityPermissionDataArray($entity, $role, $action,
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($hasExplicitAccessToBook || ($roleHasPermission && $hasPermissiveAccessToBook)),
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($hasExplicitAccessToBook || ($roleHasPermissionOwn && $hasPermissiveAccessToBook)));
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} else {
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$hasAccess = $entity->hasActiveRestriction($role->id, $action);
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return $this->createEntityPermissionDataArray($entity, $role, $action, $hasAccess, $hasAccess);
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}
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} elseif ($entity->isA('page')) {
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if (!$entity->restricted) {
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$hasExplicitAccessToBook = $entity->book->hasActiveRestriction($role->id, $action);
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$hasPermissiveAccessToBook = !$entity->book->restricted;
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$hasExplicitAccessToChapter = $entity->chapter && $entity->chapter->hasActiveRestriction($role->id, $action);
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$hasPermissiveAccessToChapter = $entity->chapter && !$entity->chapter->restricted;
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$acknowledgeChapter = ($entity->chapter && $entity->chapter->restricted);
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$hasExplicitAccessToParents = $acknowledgeChapter ? $hasExplicitAccessToChapter : $hasExplicitAccessToBook;
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$hasPermissiveAccessToParents = $acknowledgeChapter ? $hasPermissiveAccessToChapter : $hasPermissiveAccessToBook;
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return $this->createEntityPermissionDataArray($entity, $role, $action,
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($hasExplicitAccessToParents || ($roleHasPermission && $hasPermissiveAccessToParents)),
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($hasExplicitAccessToParents || ($roleHasPermissionOwn && $hasPermissiveAccessToParents))
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);
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} else {
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$hasAccess = $entity->hasRestriction($role->id, $action);
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return $this->createEntityPermissionDataArray($entity, $role, $action, $hasAccess, $hasAccess);
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}
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}
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}
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/**
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* Create an array of data with the information of an entity permissions.
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* Used to build data for bulk insertion.
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* @param Entity $entity
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* @param Role $role
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* @param $action
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* @param $permissionAll
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* @param $permissionOwn
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* @return array
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*/
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protected function createEntityPermissionDataArray(Entity $entity, Role $role, $action, $permissionAll, $permissionOwn)
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{
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$entityClass = get_class($entity);
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return [
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'role_id' => $role->id,
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'entity_id' => $entity->id,
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'entity_type' => $entityClass,
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'action' => $action,
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'has_permission' => $permissionAll,
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'has_permission_own' => $permissionOwn,
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'created_by' => $entity->created_by
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];
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}
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/**
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* Checks if an entity has a restriction set upon it.
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* @param Entity $entity
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* @param $permission
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* @return bool
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*/
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public function checkEntityUserAccess(Entity $entity, $permission)
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{
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if ($this->isAdmin) return true;
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$explodedPermission = explode('-', $permission);
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$baseQuery = $entity->where('id', '=', $entity->id);
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$nonEntityPermissions = ['restrictions'];
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// Handle non entity specific permissions
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if (in_array($explodedPermission[0], $nonEntityPermissions)) {
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$allPermission = $this->currentUser && $this->currentUser->can($permission . '-all');
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$ownPermission = $this->currentUser && $this->currentUser->can($permission . '-own');
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$this->currentAction = 'view';
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$isOwner = $this->currentUser && $this->currentUser->id === $entity->created_by;
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return ($allPermission || ($isOwner && $ownPermission));
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}
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$action = end($explodedPermission);
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$this->currentAction = $action;
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return $this->entityRestrictionQuery($baseQuery)->count() > 0;
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}
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/**
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* Check if an entity has restrictions set on itself or its
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* parent tree.
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* @param Entity $entity
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* @param $action
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* @return bool|mixed
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*/
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public function checkIfRestrictionsSet(Entity $entity, $action)
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{
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$this->currentAction = $action;
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if ($entity->isA('page')) {
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return $entity->restricted || ($entity->chapter && $entity->chapter->restricted) || $entity->book->restricted;
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} elseif ($entity->isA('chapter')) {
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return $entity->restricted || $entity->book->restricted;
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} elseif ($entity->isA('book')) {
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return $entity->restricted;
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}
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}
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/**
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* The general query filter to remove all entities
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* that the current user does not have access to.
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* @param $query
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* @return mixed
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*/
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protected function entityRestrictionQuery($query)
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{
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return $query->where(function ($parentQuery) {
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$parentQuery->whereHas('permissions', function ($permissionQuery) {
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$permissionQuery->whereIn('role_id', $this->userRoles)
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->where('action', '=', $this->currentAction)
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->where(function ($query) {
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$query->where('has_permission', '=', true)
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->orWhere(function ($query) {
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$query->where('has_permission_own', '=', true)
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->where('created_by', '=', $this->currentUser->id);
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});
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});
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});
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});
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}
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/**
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* Add restrictions for a page query
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* @param $query
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* @param string $action
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* @return mixed
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*/
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public function enforcePageRestrictions($query, $action = 'view')
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{
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// Prevent drafts being visible to others.
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$query = $query->where(function ($query) {
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$query->where('draft', '=', false);
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if ($this->currentUser) {
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$query->orWhere(function ($query) {
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$query->where('draft', '=', true)->where('created_by', '=', $this->currentUser->id);
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});
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}
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});
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if ($this->isAdmin) return $query;
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$this->currentAction = $action;
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return $this->entityRestrictionQuery($query);
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}
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/**
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* Add on permission restrictions to a chapter query.
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* @param $query
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* @param string $action
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* @return mixed
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*/
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public function enforceChapterRestrictions($query, $action = 'view')
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{
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if ($this->isAdmin) return $query;
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$this->currentAction = $action;
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return $this->entityRestrictionQuery($query);
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}
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/**
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* Add restrictions to a book query.
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* @param $query
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* @param string $action
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* @return mixed
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*/
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public function enforceBookRestrictions($query, $action = 'view')
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{
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if ($this->isAdmin) return $query;
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$this->currentAction = $action;
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return $this->entityRestrictionQuery($query);
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}
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/**
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* Filter items that have entities set a a polymorphic relation.
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* @param $query
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* @param string $tableName
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* @param string $entityIdColumn
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* @param string $entityTypeColumn
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* @return mixed
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*/
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public function filterRestrictedEntityRelations($query, $tableName, $entityIdColumn, $entityTypeColumn)
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{
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if ($this->isAdmin) return $query;
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$this->currentAction = 'view';
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$tableDetails = ['tableName' => $tableName, 'entityIdColumn' => $entityIdColumn, 'entityTypeColumn' => $entityTypeColumn];
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return $query->where(function ($query) use ($tableDetails) {
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$query->whereExists(function ($permissionQuery) use (&$tableDetails) {
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$permissionQuery->select('id')->from('entity_permissions')
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->whereRaw('entity_permissions.entity_id=' . $tableDetails['tableName'] . '.' . $tableDetails['entityIdColumn'])
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->whereRaw('entity_permissions.entity_type=' . $tableDetails['tableName'] . '.' . $tableDetails['entityTypeColumn'])
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->where('action', '=', $this->currentAction)
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->whereIn('role_id', $this->userRoles)
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->where(function ($query) {
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$query->where('has_permission', '=', true)->orWhere(function ($query) {
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$query->where('has_permission_own', '=', true)
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->where('created_by', '=', $this->currentUser->id);
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});
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});
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});
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});
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}
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/**
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* Filters pages that are a direct relation to another item.
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* @param $query
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* @param $tableName
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* @param $entityIdColumn
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* @return mixed
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*/
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public function filterRelatedPages($query, $tableName, $entityIdColumn)
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{
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if ($this->isAdmin) return $query;
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$this->currentAction = 'view';
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$tableDetails = ['tableName' => $tableName, 'entityIdColumn' => $entityIdColumn];
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return $query->where(function ($query) use ($tableDetails) {
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$query->where(function ($query) use (&$tableDetails) {
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$query->whereExists(function ($permissionQuery) use (&$tableDetails) {
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$permissionQuery->select('id')->from('entity_permissions')
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->whereRaw('entity_permissions.entity_id=' . $tableDetails['tableName'] . '.' . $tableDetails['entityIdColumn'])
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->where('entity_type', '=', 'Bookstack\\Page')
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->where('action', '=', $this->currentAction)
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->whereIn('role_id', $this->userRoles)
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->where(function ($query) {
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$query->where('has_permission', '=', true)->orWhere(function ($query) {
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$query->where('has_permission_own', '=', true)
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->where('created_by', '=', $this->currentUser ? $this->currentUser->id : 0);
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});
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});
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});
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})->orWhere($tableDetails['entityIdColumn'], '=', 0);
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});
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}
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} |