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<?php |
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/** |
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* PrivateBin |
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* |
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* a zero-knowledge paste bin |
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* |
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* @link https://github.com/PrivateBin/PrivateBin |
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* @copyright 2012 Sébastien SAUVAGE (sebsauvage.net) |
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* @license https://www.opensource.org/licenses/zlib-license.php The zlib/libpng License |
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* @version 1.7.1 |
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*/ |
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namespace PrivateBin\Data; |
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/** |
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* AbstractData |
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* |
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* Abstract model for data access |
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*/ |
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abstract class AbstractData |
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{ |
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/** |
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* cache for the traffic limiter |
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* |
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* @access protected |
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* @var array |
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*/ |
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protected $_last_cache = array(); |
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/** |
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* Create a paste. |
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* |
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* @access public |
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* @param string $pasteid |
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* @param array $paste |
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* @return bool |
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*/ |
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abstract public function create($pasteid, array $paste); |
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/** |
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* Read a paste. |
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* |
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* @access public |
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* @param string $pasteid |
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* @return array|false |
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*/ |
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abstract public function read($pasteid); |
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/** |
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* Delete a paste and its discussion. |
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* |
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* @access public |
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* @param string $pasteid |
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*/ |
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abstract public function delete($pasteid); |
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/** |
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* Test if a paste exists. |
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* |
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* @access public |
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* @param string $pasteid |
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* @return bool |
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*/ |
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abstract public function exists($pasteid); |
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/** |
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* Create a comment in a paste. |
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* |
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* @access public |
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* @param string $pasteid |
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* @param string $parentid |
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* @param string $commentid |
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* @param array $comment |
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* @return bool |
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*/ |
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abstract public function createComment($pasteid, $parentid, $commentid, array $comment); |
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/** |
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* Read all comments of paste. |
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* |
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* @access public |
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* @param string $pasteid |
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* @return array |
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*/ |
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abstract public function readComments($pasteid); |
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/** |
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* Test if a comment exists. |
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* |
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* @access public |
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* @param string $pasteid |
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* @param string $parentid |
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* @param string $commentid |
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* @return bool |
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*/ |
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abstract public function existsComment($pasteid, $parentid, $commentid); |
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/** |
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* Purge outdated entries. |
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* |
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* @access public |
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* @param string $namespace |
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* @param int $time |
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* @return void |
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*/ |
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public function purgeValues($namespace, $time) |
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{ |
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if ($namespace === 'traffic_limiter') { |
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foreach ($this->_last_cache as $key => $last_submission) { |
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if ($last_submission <= $time) { |
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unset($this->_last_cache[$key]); |
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} |
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} |
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} |
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} |
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/** |
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* Save a value. |
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* |
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* @access public |
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* @param string $value |
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* @param string $namespace |
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* @param string $key |
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* @return bool |
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*/ |
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abstract public function setValue($value, $namespace, $key = ''); |
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/** |
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* Load a value. |
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* |
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* @access public |
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* @param string $namespace |
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* @param string $key |
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* @return string |
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*/ |
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abstract public function getValue($namespace, $key = ''); |
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/** |
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* Returns up to batch size number of paste ids that have expired |
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* |
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* @access protected |
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* @param int $batchsize |
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* @return array |
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*/ |
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abstract protected function _getExpiredPastes($batchsize); |
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/** |
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* Perform a purge of old pastes, at most the given batchsize is deleted. |
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* |
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* @access public |
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* @param int $batchsize |
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*/ |
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public function purge($batchsize) |
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{ |
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if ($batchsize < 1) { |
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return; |
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} |
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$pastes = $this->_getExpiredPastes($batchsize); |
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if (count($pastes)) { |
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foreach ($pastes as $pasteid) { |
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$this->delete($pasteid); |
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} |
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} |
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} |
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/** |
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* Returns all paste ids |
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* |
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* @access public |
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* @return array |
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*/ |
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abstract public function getAllPastes(); |
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/** |
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* Get next free slot for comment from postdate. |
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* |
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* @access protected |
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* @param array $comments |
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* @param int|string $postdate |
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* @return int|string |
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*/ |
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protected function getOpenSlot(array &$comments, $postdate) |
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{ |
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if (array_key_exists($postdate, $comments)) { |
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$parts = explode('.', $postdate, 2); |
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if (!array_key_exists(1, $parts)) { |
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$parts[1] = 0; |
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} |
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++$parts[1]; |
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return $this->getOpenSlot($comments, implode('.', $parts)); |
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} |
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return $postdate; |
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} |
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/** |
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* Upgrade pre-version 1 pastes with attachment to version 1 format. |
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* |
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* @access protected |
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* @static |
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* @param array $paste |
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* @return array |
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*/ |
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protected static function upgradePreV1Format(array $paste) |
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{ |
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if (array_key_exists('attachment', $paste['meta'])) { |
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$paste['attachment'] = $paste['meta']['attachment']; |
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unset($paste['meta']['attachment']); |
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if (array_key_exists('attachmentname', $paste['meta'])) { |
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$paste['attachmentname'] = $paste['meta']['attachmentname']; |
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unset($paste['meta']['attachmentname']); |
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} |
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} |
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return $paste; |
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} |
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} |
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PrivateBin /
PrivateBin
