/**
* @brief
*/
public static function postUnshare($params)
{
// NOTE: $params has keys:
// [itemType] => file
// [itemSource] => 13
// [shareType] => 0
// [shareWith] => test1
// [itemParent] =>
if (\OCP\App::isEnabled('files_encryption') === false) {
return true;
}
if ($params['itemType'] === 'file' || $params['itemType'] === 'folder') {
$view = new \OC_FilesystemView('/');
$userId = \OCP\User::getUser();
$util = new Util($view, $userId);
$path = $util->fileIdToPath($params['itemSource']);
// check if this is a re-share
if ($params['itemParent']) {
// get the parent from current share
$parent = $util->getShareParent($params['itemParent']);
// get target path
$targetPath = $util->fileIdToPath($params['itemSource']);
$targetPathSplit = array_reverse(explode('/', $targetPath));
// init values
$path = '';
$sharedPart = ltrim($parent['file_target'], '/');
// rebuild path
foreach ($targetPathSplit as $pathPart) {
if ($pathPart !== $sharedPart) {
$path = '/' . $pathPart . $path;
} else {
break;
}
}
// prefix path with Shared
$path = '/Shared' . $parent['file_target'] . $path;
}
// for group shares get a list of the group members
if ($params['shareType'] === \OCP\Share::SHARE_TYPE_GROUP) {
$userIds = \OC_Group::usersInGroup($params['shareWith']);
} else {
if ($params['shareType'] === \OCP\Share::SHARE_TYPE_LINK) {
$userIds = array($util->getPublicShareKeyId());
} else {
$userIds = array($params['shareWith']);
}
}
// get the path including mount point only if not a shared folder
if (strncmp($path, '/Shared', strlen('/Shared') !== 0)) {
// get path including the the storage mount point
$path = $util->getPathWithMountPoint($params['itemSource']);
}
// if we unshare a folder we need a list of all (sub-)files
if ($params['itemType'] === 'folder') {
$allFiles = $util->getAllFiles($path);
} else {
$allFiles = array($path);
}
foreach ($allFiles as $path) {
// check if the user still has access to the file, otherwise delete share key
$sharingUsers = $util->getSharingUsersArray(true, $path);
// Unshare every user who no longer has access to the file
$delUsers = array_diff($userIds, $sharingUsers);
// delete share key
Keymanager::delShareKey($view, $delUsers, $path);
}
}
}
/**
* after a file is renamed, rename its keyfile and share-keys also fix the file size and fix also the sharing
* @param array $params array with oldpath and newpath
*
* This function is connected to the rename signal of OC_Filesystem and adjust the name and location
* of the stored versions along the actual file
*/
public static function postRename($params)
{
if (\OCP\App::isEnabled('files_encryption') === false) {
return true;
}
// Disable encryption proxy to prevent recursive calls
$proxyStatus = \OC_FileProxy::$enabled;
\OC_FileProxy::$enabled = false;
$view = new \OC\Files\View('/');
$session = new \OCA\Encryption\Session($view);
$userId = \OCP\User::getUser();
$util = new Util($view, $userId);
if (isset(self::$renamedFiles[$params['oldpath']]['uid']) && isset(self::$renamedFiles[$params['oldpath']]['path'])) {
$ownerOld = self::$renamedFiles[$params['oldpath']]['uid'];
$pathOld = self::$renamedFiles[$params['oldpath']]['path'];
} else {
\OCP\Util::writeLog('Encryption library', "can't get path and owner from the file before it was renamed", \OCP\Util::DEBUG);
return false;
}
list($ownerNew, $pathNew) = $util->getUidAndFilename($params['newpath']);
// Format paths to be relative to user files dir
if ($util->isSystemWideMountPoint($pathOld)) {
$oldKeyfilePath = 'files_encryption/keyfiles/' . $pathOld;
$oldShareKeyPath = 'files_encryption/share-keys/' . $pathOld;
} else {
$oldKeyfilePath = $ownerOld . '/' . 'files_encryption/keyfiles/' . $pathOld;
$oldShareKeyPath = $ownerOld . '/' . 'files_encryption/share-keys/' . $pathOld;
}
if ($util->isSystemWideMountPoint($pathNew)) {
$newKeyfilePath = 'files_encryption/keyfiles/' . $pathNew;
$newShareKeyPath = 'files_encryption/share-keys/' . $pathNew;
} else {
$newKeyfilePath = $ownerNew . '/files_encryption/keyfiles/' . $pathNew;
$newShareKeyPath = $ownerNew . '/files_encryption/share-keys/' . $pathNew;
}
// create new key folders if it doesn't exists
if (!$view->file_exists(dirname($newShareKeyPath))) {
$view->mkdir(dirname($newShareKeyPath));
}
if (!$view->file_exists(dirname($newKeyfilePath))) {
$view->mkdir(dirname($newKeyfilePath));
}
// handle share keys
if (!$view->is_dir($oldKeyfilePath)) {
$oldKeyfilePath .= '.key';
$newKeyfilePath .= '.key';
// handle share-keys
$matches = Helper::findShareKeys($oldShareKeyPath, $view);
foreach ($matches as $src) {
$dst = \OC\Files\Filesystem::normalizePath(str_replace($pathOld, $pathNew, $src));
$view->rename($src, $dst);
}
} else {
// handle share-keys folders
$view->rename($oldShareKeyPath, $newShareKeyPath);
}
// Rename keyfile so it isn't orphaned
if ($view->file_exists($oldKeyfilePath)) {
$view->rename($oldKeyfilePath, $newKeyfilePath);
}
// update share keys
$sharingEnabled = \OCP\Share::isEnabled();
// get users
$usersSharing = $util->getSharingUsersArray($sharingEnabled, $pathNew);
// update sharing-keys
$util->setSharedFileKeyfiles($session, $usersSharing, $pathNew);
\OC_FileProxy::$enabled = $proxyStatus;
}
/**
* @brief after a file is renamed, rename its keyfile and share-keys also fix the file size and fix also the sharing
* @param array with oldpath and newpath
*
* This function is connected to the rename signal of OC_Filesystem and adjust the name and location
* of the stored versions along the actual file
*/
public static function postRename($params)
{
if (\OCP\App::isEnabled('files_encryption') === false) {
return true;
}
// Disable encryption proxy to prevent recursive calls
$proxyStatus = \OC_FileProxy::$enabled;
\OC_FileProxy::$enabled = false;
$view = new \OC_FilesystemView('/');
$session = new \OCA\Encryption\Session($view);
$userId = \OCP\User::getUser();
$util = new Util($view, $userId);
// Format paths to be relative to user files dir
if ($util->isSystemWideMountPoint($params['oldpath'])) {
$baseDir = 'files_encryption/';
$oldKeyfilePath = $baseDir . 'keyfiles/' . $params['oldpath'];
} else {
$baseDir = $userId . '/' . 'files_encryption/';
$oldKeyfilePath = $baseDir . 'keyfiles/' . $params['oldpath'];
}
if ($util->isSystemWideMountPoint($params['newpath'])) {
$newKeyfilePath = $baseDir . 'keyfiles/' . $params['newpath'];
} else {
$newKeyfilePath = $baseDir . 'keyfiles/' . $params['newpath'];
}
// add key ext if this is not an folder
if (!$view->is_dir($oldKeyfilePath)) {
$oldKeyfilePath .= '.key';
$newKeyfilePath .= '.key';
// handle share-keys
$localKeyPath = $view->getLocalFile($baseDir . 'share-keys/' . $params['oldpath']);
$escapedPath = Helper::escapeGlobPattern($localKeyPath);
$matches = glob($escapedPath . '*.shareKey');
foreach ($matches as $src) {
$dst = \OC\Files\Filesystem::normalizePath(str_replace($params['oldpath'], $params['newpath'], $src));
// create destination folder if not exists
if (!file_exists(dirname($dst))) {
mkdir(dirname($dst), 0750, true);
}
rename($src, $dst);
}
} else {
// handle share-keys folders
$oldShareKeyfilePath = $baseDir . 'share-keys/' . $params['oldpath'];
$newShareKeyfilePath = $baseDir . 'share-keys/' . $params['newpath'];
// create destination folder if not exists
if (!$view->file_exists(dirname($newShareKeyfilePath))) {
$view->mkdir(dirname($newShareKeyfilePath), 0750, true);
}
$view->rename($oldShareKeyfilePath, $newShareKeyfilePath);
}
// Rename keyfile so it isn't orphaned
if ($view->file_exists($oldKeyfilePath)) {
// create destination folder if not exists
if (!$view->file_exists(dirname($newKeyfilePath))) {
$view->mkdir(dirname($newKeyfilePath), 0750, true);
}
$view->rename($oldKeyfilePath, $newKeyfilePath);
}
// build the path to the file
$newPath = '/' . $userId . '/files' . $params['newpath'];
$newPathRelative = $params['newpath'];
if ($util->fixFileSize($newPath)) {
// get sharing app state
$sharingEnabled = \OCP\Share::isEnabled();
// get users
$usersSharing = $util->getSharingUsersArray($sharingEnabled, $newPathRelative);
// update sharing-keys
$util->setSharedFileKeyfiles($session, $usersSharing, $newPathRelative);
}
\OC_FileProxy::$enabled = $proxyStatus;
}
/**
* unshare file/folder from a user with whom you shared the file before
*/
public static function postUnshare($params)
{
if (\OCP\App::isEnabled('files_encryption') === false) {
return true;
}
if ($params['itemType'] === 'file' || $params['itemType'] === 'folder') {
$view = new \OC\Files\View('/');
$userId = \OCP\User::getUser();
$util = new Util($view, $userId);
$path = \OC\Files\Filesystem::getPath($params['fileSource']);
// for group shares get a list of the group members
if ($params['shareType'] === \OCP\Share::SHARE_TYPE_GROUP) {
$userIds = \OC_Group::usersInGroup($params['shareWith']);
} else {
if ($params['shareType'] === \OCP\Share::SHARE_TYPE_LINK) {
$userIds = array($util->getPublicShareKeyId());
} else {
$userIds = array($params['shareWith']);
}
}
$mountManager = \OC\Files\Filesystem::getMountManager();
$mount = $mountManager->find('/' . $userId . '/files' . $path);
$mountPoint = $mount->getMountPoint();
// if we unshare a folder we need a list of all (sub-)files
if ($params['itemType'] === 'folder') {
$allFiles = $util->getAllFiles($path, $mountPoint);
} else {
$allFiles = array($path);
}
foreach ($allFiles as $path) {
// check if the user still has access to the file, otherwise delete share key
$sharingUsers = $util->getSharingUsersArray(true, $path);
// Unshare every user who no longer has access to the file
$delUsers = array_diff($userIds, $sharingUsers);
list($owner, $ownerPath) = $util->getUidAndFilename($path);
// delete share key
Keymanager::delShareKey($view, $delUsers, $ownerPath, $owner);
}
}
}
