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<?php
/**
* @copyright Copyright (c) 2016 Joas Schilling <coding@schilljs.com>
*
* @author Joas Schilling <coding@schilljs.com>
* @author Morris Jobke <hey@morrisjobke.de>
*
* @license GNU AGPL version 3 or any later version
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU Affero General Public License as
* published by the Free Software Foundation, either version 3 of the
* License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Affero General Public License for more details.
*
* You should have received a copy of the GNU Affero General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*
*/
namespace OCA\Files\Activity;
use OCP\Activity\IEvent;
use OCP\Activity\IEventMerger;
use OCP\Activity\IManager;
use OCP\Activity\IProvider;
use OCP\Files\Folder;
use OCP\Files\InvalidPathException;
use OCP\Files\IRootFolder;
use OCP\Files\Node;
use OCP\Files\NotFoundException;
use OCP\IL10N;
use OCP\IURLGenerator;
use OCP\IUser;
use OCP\IUserManager;
use OCP\L10N\IFactory;
class Provider implements IProvider {
/** @var IFactory */
protected $languageFactory;
/** @var IL10N */
protected $l;
/** @var IL10N */
protected $activityLang;
/** @var IURLGenerator */
protected $url;
/** @var IManager */
protected $activityManager;
/** @var IUserManager */
protected $userManager;
/** @var IRootFolder */
protected $rootFolder;
/** @var IEventMerger */
protected $eventMerger;
/** @var string[] cached displayNames - key is the UID and value the displayname */
protected $displayNames = [];
protected $fileIsEncrypted = false;
/**
* @param IFactory $languageFactory
* @param IURLGenerator $url
* @param IManager $activityManager
* @param IUserManager $userManager
* @param IRootFolder $rootFolder
* @param IEventMerger $eventMerger
*/
public function __construct(IFactory $languageFactory, IURLGenerator $url, IManager $activityManager, IUserManager $userManager, IRootFolder $rootFolder, IEventMerger $eventMerger) {
$this->languageFactory = $languageFactory;
$this->url = $url;
$this->activityManager = $activityManager;
$this->userManager = $userManager;
$this->rootFolder = $rootFolder;
$this->eventMerger = $eventMerger;
}
/**
* @param string $language
* @param IEvent $event
* @param IEvent|null $previousEvent
* @return IEvent
* @throws \InvalidArgumentException
* @since 11.0.0
*/
public function parse($language, IEvent $event, IEvent $previousEvent = null) {
if ($event->getApp() !== 'files') {
throw new \InvalidArgumentException();
}
$this->l = $this->languageFactory->get('files', $language);
$this->activityLang = $this->languageFactory->get('activity', $language);
if ($this->activityManager->isFormattingFilteredObject()) {
try {
return $this->parseShortVersion($event, $previousEvent);
} catch (\InvalidArgumentException $e) {
// Ignore and simply use the long version...
}
}
return $this->parseLongVersion($event, $previousEvent);
}
protected function setIcon(IEvent $event, $icon) {
if ($this->activityManager->getRequirePNG()) {
$event->setIcon($this->url->getAbsoluteURL($this->url->imagePath('files', $icon . '.png')));
} else {
$event->setIcon($this->url->getAbsoluteURL($this->url->imagePath('files', $icon . '.svg')));
}
}
/**
* @param IEvent $event
* @param IEvent|null $previousEvent
* @return IEvent
* @throws \InvalidArgumentException
* @since 11.0.0
*/
public function parseShortVersion(IEvent $event, IEvent $previousEvent = null) {
$parsedParameters = $this->getParameters($event);
if ($event->getSubject() === 'created_by') {
$subject = $this->l->t('Created by {user}');
$this->setIcon($event, 'add-color');
} else if ($event->getSubject() === 'changed_by') {
$subject = $this->l->t('Changed by {user}');
$this->setIcon($event, 'change');
} else if ($event->getSubject() === 'deleted_by') {
$subject = $this->l->t('Deleted by {user}');
$this->setIcon($event, 'delete-color');
} else if ($event->getSubject() === 'restored_by') {
$subject = $this->l->t('Restored by {user}');
} else if ($event->getSubject() === 'renamed_by') {
$subject = $this->l->t('Renamed by {user}');
$this->setIcon($event, 'change');
} else if ($event->getSubject() === 'moved_by') {
$subject = $this->l->t('Moved by {user}');
$this->setIcon($event, 'change');
} else {
throw new \InvalidArgumentException();
}
if (!isset($parsedParameters['user'])) {
// External user via public link share
$subject = str_replace('{user}', $this->activityLang->t('"remote user"'), $subject);
}
$this->setSubjects($event, $subject, $parsedParameters);
return $this->eventMerger->mergeEvents('user', $event, $previousEvent);
}
/**
* @param IEvent $event
* @param IEvent|null $previousEvent
* @return IEvent
* @throws \InvalidArgumentException
* @since 11.0.0
*/
public function parseLongVersion(IEvent $event, IEvent $previousEvent = null) {
$this->fileIsEncrypted = false;
$parsedParameters = $this->getParameters($event);
if ($event->getSubject() === 'created_self') {
$subject = $this->l->t('You created {file}');
if ($this->fileIsEncrypted) {
$subject = $this->l->t('You created an encrypted file in {file}');
}
$this->setIcon($event, 'add-color');
} else if ($event->getSubject() === 'created_by') {
$subject = $this->l->t('{user} created {file}');
if ($this->fileIsEncrypted) {
$subject = $this->l->t('{user} created an encrypted file in {file}');
}
$this->setIcon($event, 'add-color');
} else if ($event->getSubject() === 'created_public') {
$subject = $this->l->t('{file} was created in a public folder');
$this->setIcon($event, 'add-color');
} else if ($event->getSubject() === 'changed_self') {
$subject = $this->l->t('You changed {file}');
if ($this->fileIsEncrypted) {
$subject = $this->l->t('You changed an encrypted file in {file}');
}
$this->setIcon($event, 'change');
} else if ($event->getSubject() === 'changed_by') {
$subject = $this->l->t('{user} changed {file}');
if ($this->fileIsEncrypted) {
$subject = $this->l->t('{user} changed an encrypted file in {file}');
}
$this->setIcon($event, 'change');
} else if ($event->getSubject() === 'deleted_self') {
$subject = $this->l->t('You deleted {file}');
if ($this->fileIsEncrypted) {
$subject = $this->l->t('You deleted an encrypted file in {file}');
}
$this->setIcon($event, 'delete-color');
} else if ($event->getSubject() === 'deleted_by') {
$subject = $this->l->t('{user} deleted {file}');
if ($this->fileIsEncrypted) {
$subject = $this->l->t('{user} deleted an encrypted file in {file}');
}
$this->setIcon($event, 'delete-color');
} else if ($event->getSubject() === 'restored_self') {
$subject = $this->l->t('You restored {file}');
} else if ($event->getSubject() === 'restored_by') {
$subject = $this->l->t('{user} restored {file}');
} else if ($event->getSubject() === 'renamed_self') {
$subject = $this->l->t('You renamed {oldfile} to {newfile}');
$this->setIcon($event, 'change');
} else if ($event->getSubject() === 'renamed_by') {
$subject = $this->l->t('{user} renamed {oldfile} to {newfile}');
$this->setIcon($event, 'change');
} else if ($event->getSubject() === 'moved_self') {
$subject = $this->l->t('You moved {oldfile} to {newfile}');
$this->setIcon($event, 'change');
} else if ($event->getSubject() === 'moved_by') {
$subject = $this->l->t('{user} moved {oldfile} to {newfile}');
$this->setIcon($event, 'change');
} else {
throw new \InvalidArgumentException();
}
if ($this->fileIsEncrypted) {
$event->setSubject($event->getSubject() . '_enc', $event->getSubjectParameters());
}
if (!isset($parsedParameters['user'])) {
// External user via public link share
$subject = str_replace('{user}', $this->activityLang->t('"remote user"'), $subject);
}
$this->setSubjects($event, $subject, $parsedParameters);
$event = $this->eventMerger->mergeEvents('file', $event, $previousEvent);
if ($event->getChildEvent() === null) {
// Couldn't group by file, maybe we can group by user
$event = $this->eventMerger->mergeEvents('user', $event, $previousEvent);
}
return $event;
}
protected function setSubjects(IEvent $event, $subject, array $parameters) {
$placeholders = $replacements = [];
foreach ($parameters as $placeholder => $parameter) {
$placeholders[] = '{' . $placeholder . '}';
if ($parameter['type'] === 'file') {
$replacements[] = $parameter['path'];
} else {
$replacements[] = $parameter['name'];
}
}
$event->setParsedSubject(str_replace($placeholders, $replacements, $subject))
->setRichSubject($subject, $parameters);
}
/**
* @param IEvent $event
* @return array
* @throws \InvalidArgumentException
*/
protected function getParameters(IEvent $event) {
$parameters = $event->getSubjectParameters();
switch ($event->getSubject()) {
case 'created_self':
case 'created_public':
case 'changed_self':
case 'deleted_self':
case 'restored_self':
return [
'file' => $this->getFile($parameters[0], $event),
];
case 'created_by':
case 'changed_by':
case 'deleted_by':
case 'restored_by':
if ($parameters[1] === '') {
// External user via public link share
return [
'file' => $this->getFile($parameters[0], $event),
];
}
return [
'file' => $this->getFile($parameters[0], $event),
'user' => $this->getUser($parameters[1]),
];
case 'renamed_self':
case 'moved_self':
return [
'newfile' => $this->getFile($parameters[0]),
'oldfile' => $this->getFile($parameters[1]),
];
case 'renamed_by':
case 'moved_by':
if ($parameters[1] === '') {
// External user via public link share
return [
'newfile' => $this->getFile($parameters[0]),
'oldfile' => $this->getFile($parameters[2]),
];
}
return [
'newfile' => $this->getFile($parameters[0]),
'user' => $this->getUser($parameters[1]),
'oldfile' => $this->getFile($parameters[2]),
];
}
return [];
}
/**
* @param array|string $parameter
* @param IEvent|null $event
* @return array
* @throws \InvalidArgumentException
*/
protected function getFile($parameter, IEvent $event = null) {
if (is_array($parameter)) {
$path = reset($parameter);
$id = (string) key($parameter);
} else if ($event !== null) {
// Legacy from before ownCloud 8.2
$path = $parameter;
$id = $event->getObjectId();
} else {
throw new \InvalidArgumentException('Could not generate file parameter');
}
$encryptionContainer = $this->getEndToEndEncryptionContainer($id, $path);
if ($encryptionContainer instanceof Folder) {
$this->fileIsEncrypted = true;
try {
$fullPath = rtrim($encryptionContainer->getPath(), '/');
// Remove /user/files/...
list(,,, $path) = explode('/', $fullPath, 4);
if (!$path) {
throw new InvalidPathException('Path could not be split correctly');
}
return [
'type' => 'file',
'id' => $encryptionContainer->getId(),
'name' => $encryptionContainer->getName(),
'path' => $path,
'link' => $this->url->linkToRouteAbsolute('files.viewcontroller.showFile', ['fileid' => $encryptionContainer->getId()]),
];
} catch (\Exception $e) {
// fall back to the normal one
$this->fileIsEncrypted = false;
}
}
return [
'type' => 'file',
'id' => $id,
'name' => basename($path),
'path' => trim($path, '/'),
'link' => $this->url->linkToRouteAbsolute('files.viewcontroller.showFile', ['fileid' => $id]),
];
}
protected $fileEncrypted = [];
/**
* Check if a file is end2end encrypted
* @param int $fileId
* @param string $path
* @return Folder|null
*/
protected function getEndToEndEncryptionContainer($fileId, $path) {
if (isset($this->fileEncrypted[$fileId])) {
return $this->fileEncrypted[$fileId];
}
$fileName = basename($path);
if (!preg_match('/^[0-9a-fA-F]{32}$/', $fileName)) {
$this->fileEncrypted[$fileId] = false;
return $this->fileEncrypted[$fileId];
}
$userFolder = $this->rootFolder->getUserFolder($this->activityManager->getCurrentUserId());
$files = $userFolder->getById($fileId);
if (empty($files)) {
try {
// Deleted, try with parent
$file = $this->findExistingParent($userFolder, dirname($path));
} catch (NotFoundException $e) {
return null;
}
if (!$file instanceof Folder || !$file->isEncrypted()) {
return null;
}
$this->fileEncrypted[$fileId] = $file;
return $file;
}
$file = array_shift($files);
if ($file instanceof Folder && $file->isEncrypted()) {
// If the folder is encrypted, it is the Container,
// but can be the name is just fine.
$this->fileEncrypted[$fileId] = true;
return null;
}
$this->fileEncrypted[$fileId] = $this->getParentEndToEndEncryptionContainer($userFolder, $file);
return $this->fileEncrypted[$fileId];
}
/**
* @param Folder $userFolder
* @param string $path
* @return Folder
* @throws NotFoundException
*/
protected function findExistingParent(Folder $userFolder, $path) {
if ($path === '/') {
throw new NotFoundException('Reached the root');
}
try {
$folder = $userFolder->get(dirname($path));
} catch (NotFoundException $e) {
return $this->findExistingParent($userFolder, dirname($path));
}
return $folder;
}
/**
* Check all parents until the user's root folder if one is encrypted
*
* @param Folder $userFolder
* @param Node $file
* @return Node|null
*/
protected function getParentEndToEndEncryptionContainer(Folder $userFolder, Node $file) {
try {
$parent = $file->getParent();
if ($userFolder->getId() === $parent->getId()) {
return null;
}
} catch (\Exception $e) {
return null;
}
if ($parent->isEncrypted()) {
return $parent;
}
return $this->getParentEndToEndEncryptionContainer($userFolder, $parent);
}
/**
* @param string $uid
* @return array
*/
protected function getUser($uid) {
if (!isset($this->displayNames[$uid])) {
$this->displayNames[$uid] = $this->getDisplayName($uid);
}
return [
'type' => 'user',
'id' => $uid,
'name' => $this->displayNames[$uid],
];
}
/**
* @param string $uid
* @return string
*/
protected function getDisplayName($uid) {
$user = $this->userManager->get($uid);
if ($user instanceof IUser) {
return $user->getDisplayName();
} else {
return $uid;
}
}
}