185 lines
4.3 KiB
PHP
185 lines
4.3 KiB
PHP
<?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 1.3.1
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*/
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namespace PrivateBin\Model;
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use Exception;
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use Identicon\Identicon;
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use PrivateBin\Persistence\TrafficLimiter;
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use PrivateBin\Vizhash16x16;
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/**
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* Comment
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*
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* Model of a PrivateBin comment.
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*/
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class Comment extends AbstractModel
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{
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/**
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* Instance's parent.
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*
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* @access private
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* @var Paste
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*/
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private $_paste;
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/**
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* Store the comment's data.
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*
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* @access public
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* @throws Exception
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*/
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public function store()
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{
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// Make sure paste exists.
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$pasteid = $this->getPaste()->getId();
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if (!$this->getPaste()->exists()) {
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throw new Exception('Invalid data.', 67);
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}
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// Make sure the discussion is opened in this paste and in configuration.
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if (!$this->getPaste()->isOpendiscussion() || !$this->_conf->getKey('discussion')) {
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throw new Exception('Invalid data.', 68);
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}
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// Check for improbable collision.
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if ($this->exists()) {
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throw new Exception('You are unlucky. Try again.', 69);
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}
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$this->_data['meta']['created'] = time();
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// store comment
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if (
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$this->_store->createComment(
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$pasteid,
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$this->getParentId(),
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$this->getId(),
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$this->_data
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) === false
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) {
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throw new Exception('Error saving comment. Sorry.', 70);
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}
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}
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/**
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* Delete the comment.
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*
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* @access public
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* @throws Exception
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*/
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public function delete()
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{
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throw new Exception('To delete a comment, delete its parent paste', 64);
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}
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/**
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* Test if comment exists in store.
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*
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* @access public
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* @return bool
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*/
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public function exists()
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{
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return $this->_store->existsComment(
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$this->getPaste()->getId(),
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$this->getParentId(),
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$this->getId()
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);
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}
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/**
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* Set paste.
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*
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* @access public
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* @param Paste $paste
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* @throws Exception
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*/
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public function setPaste(Paste $paste)
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{
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$this->_paste = $paste;
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$this->_data['pasteid'] = $paste->getId();
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}
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/**
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* Get paste.
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*
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* @access public
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* @return Paste
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*/
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public function getPaste()
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{
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return $this->_paste;
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}
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/**
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* Set parent ID.
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*
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* @access public
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* @param string $id
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* @throws Exception
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*/
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public function setParentId($id)
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{
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if (!self::isValidId($id)) {
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throw new Exception('Invalid paste ID.', 65);
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}
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$this->_data['parentid'] = $id;
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}
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/**
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* Get parent ID.
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*
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* @access public
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* @return string
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*/
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public function getParentId()
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{
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if (!array_key_exists('parentid', $this->_data)) {
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$this->_data['parentid'] = $this->getPaste()->getId();
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}
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return $this->_data['parentid'];
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}
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/**
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* Sanitizes data to conform with current configuration.
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*
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* @access protected
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* @param array $data
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* @return array
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*/
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protected function _sanitize(array $data)
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{
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// we generate an icon based on a SHA512 HMAC of the users IP, if configured
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$icon = $this->_conf->getKey('icon');
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if ($icon != 'none') {
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$pngdata = '';
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$hmac = TrafficLimiter::getHash();
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if ($icon == 'identicon') {
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$identicon = new Identicon();
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$pngdata = $identicon->getImageDataUri($hmac, 16);
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} elseif ($icon == 'vizhash') {
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$vh = new Vizhash16x16();
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$pngdata = 'data:image/png;base64,' . base64_encode(
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$vh->generate($hmac)
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);
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}
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if ($pngdata != '') {
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if (!array_key_exists('meta', $data)) {
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$data['meta'] = array();
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}
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$data['meta']['icon'] = $pngdata;
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}
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}
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return $data;
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}
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}
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