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<?php |
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/** |
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* ownCloud - Documents App |
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* |
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* @author Victor Dubiniuk |
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* @copyright 2013 Victor Dubiniuk [email protected] |
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* |
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* This file is licensed under the Affero General Public License version 3 or |
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* later. |
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*/ |
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namespace OCA\Documents\Db; |
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use OCP\Security\ISecureRandom; |
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use OCA\Documents\Filter; |
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/** |
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* Session management |
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* |
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* @method string getEsId() |
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* @method int getFileId() |
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* @method string getGenesisUrl() |
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* @method string getOwner() |
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* @method string getGenesisHash() |
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* |
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*/ |
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class Session extends \OCA\Documents\Db { |
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/** |
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* DB table |
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*/ |
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const DB_TABLE = '`*PREFIX*documents_session`'; |
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protected $tableName = '`*PREFIX*documents_session`'; |
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protected $insertStatement = 'INSERT INTO `*PREFIX*documents_session` (`es_id`, `genesis_url`, `genesis_hash`, `owner`, `file_id`) |
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VALUES (?, ?, ?, ?, ?)'; |
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protected $loadStatement = 'SELECT * FROM `*PREFIX*documents_session` WHERE `es_id`= ?'; |
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/** |
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* Start a editing session or return an existing one |
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* @param string $uid of the user starting a session |
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* @param \OCA\Documents\File $file - file object |
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* @return array |
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* @throws \Exception |
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*/ |
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public static function start($uid, $file){ |
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// Create a directory to store genesis |
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$genesis = new \OCA\Documents\Genesis($file); |
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$oldSession = new Session(); |
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$oldSession->loadBy('file_id', $file->getFileId()); |
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//If there is no existing session we need to start a new one |
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if (!$oldSession->hasData()){ |
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$newSession = new Session(array( |
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$genesis->getPath(), |
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$genesis->getHash(), |
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$file->getOwner(), |
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$file->getFileId() |
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)); |
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if (!$newSession->insert()){ |
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throw new \Exception('Failed to add session into database'); |
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} |
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} |
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$sessionData = $oldSession |
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->loadBy('file_id', $file->getFileId()) |
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->getData() |
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; |
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$memberColor = \OCA\Documents\Helper::getMemberColor($uid); |
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$member = new \OCA\Documents\Db\Member([ |
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$sessionData['es_id'], |
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$uid, |
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$memberColor, |
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time(), |
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intval($file->isPublicShare()), |
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$file->getToken() |
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]); |
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if (!$member->insert()){ |
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throw new \Exception('Failed to add member into database'); |
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} |
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$sessionData['member_id'] = (string) $member->getLastInsertId(); |
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// Do we have OC_Avatar in out disposal? |
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if (\OC::$server->getConfig()->getSystemValue('enable_avatars', true) !== true){ |
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$imageUrl = 'data:image/gif;base64,R0lGODlhAQABAIAAAAAAAAAAACH5BAAAAAAALAAAAAABAAEAAAICTAEAOw=='; |
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} else { |
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$imageUrl = $uid; |
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} |
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$displayName = $file->isPublicShare() |
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? $uid . ' ' . \OCA\Documents\Db\Member::getGuestPostfix() |
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: \OC::$server->getUserSession()->getUser()->getDisplayName($uid) |
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; |
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$userId = $file->isPublicShare() ? $displayName : \OC::$server->getUserSession()->getUser()->getUID(); |
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$op = new \OCA\Documents\Db\Op(); |
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$op->addMember( |
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$sessionData['es_id'], |
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$sessionData['member_id'], |
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$displayName, |
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$userId, |
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$memberColor, |
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$imageUrl |
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); |
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$sessionData['title'] = basename($file->getPath()); |
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$sessionData['permissions'] = $file->getPermissions(); |
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return $sessionData; |
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} |
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public static function cleanUp($esId){ |
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$session = new Session(); |
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$session->deleteBy('es_id', $esId); |
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$member = new \OCA\Documents\Db\Member(); |
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$member->deleteBy('es_id', $esId); |
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$op= new \OCA\Documents\Db\Op(); |
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$op->deleteBy('es_id', $esId); |
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} |
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public function syncOps($memberId, $currentHead, $clientHead, $clientOps){ |
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$hasOps = count($clientOps)>0; |
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$op = new \OCA\Documents\Db\Op(); |
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// TODO handle the case ($currentHead == "") && ($seqHead != "") |
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if ($clientHead == $currentHead) { |
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// matching heads |
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if ($hasOps) { |
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// incoming ops without conflict |
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// Add incoming ops, respond with a new head |
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$newHead = \OCA\Documents\Db\Op::addOpsArray($this->getEsId(), $memberId, $clientOps); |
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$result = array( |
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'result' => 'added', |
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'head_seq' => $newHead ? $newHead : $currentHead |
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); |
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} else { |
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// no incoming ops (just checking for new ops...) |
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$result = array( |
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'result' => 'new_ops', |
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'ops' => array(), |
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'head_seq' => $currentHead |
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); |
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} |
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} else { // HEADs do not match |
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$result = array( |
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'result' => $hasOps ? 'conflict' : 'new_ops', |
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'ops' => $op->getOpsAfterJson($this->getEsId(), $clientHead), |
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'head_seq' => $currentHead, |
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); |
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} |
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return $result; |
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} |
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public function insert(){ |
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$esId = $this->getUniqueSessionId(); |
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array_unshift($this->data, $esId); |
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return parent::insert(); |
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} |
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public function updateGenesisHash($esId, $genesisHash){ |
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return $this->execute( |
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'UPDATE `*PREFIX*documents_session` SET `genesis_hash`=? WHERE `es_id`=?', |
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array( |
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$genesisHash, $esId |
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) |
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); |
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} |
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public function getInfo($esId){ |
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$result = $this->execute(' |
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SELECT `s`.*, COUNT(`m`.`member_id`) AS `users` |
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FROM ' . $this->tableName . ' AS `s` |
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LEFT JOIN `*PREFIX*documents_member` AS `m` ON `s`.`es_id`=`m`.`es_id` |
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AND `m`.`status`=' . Db\Member::MEMBER_STATUS_ACTIVE . ' |
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AND `m`.`uid` != ? |
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WHERE `s`.`es_id` = ? |
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GROUP BY `m`.`es_id` |
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', |
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[ |
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\OC::$server->getUserSession()->getUser()->getUID(), |
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$esId |
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] |
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); |
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$info = $result->fetch(); |
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if (!is_array($info)){ |
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$info = array(); |
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} |
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return $info; |
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} |
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protected function getUniqueSessionId(){ |
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$testSession = new Session(); |
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do{ |
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$id = \OC::$server->getSecureRandom() |
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->getMediumStrengthGenerator() |
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->generate(30, ISecureRandom::CHAR_LOWER . ISecureRandom::CHAR_DIGITS); |
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} while ($testSession->load($id)->hasData()); |
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return $id; |
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} |
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} |
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owncloud /
documents
