PrivateBin/lib/Model/Comment.php

186 lines
4.3 KiB
PHP

<?php
/**
* PrivateBin
*
* a zero-knowledge paste bin
*
* @link https://github.com/PrivateBin/PrivateBin
* @copyright 2012 Sébastien SAUVAGE (sebsauvage.net)
* @license https://www.opensource.org/licenses/zlib-license.php The zlib/libpng License
* @version 1.2.1
*/
namespace PrivateBin\Model;
use Exception;
use Identicon\Identicon;
use PrivateBin\Persistence\TrafficLimiter;
use PrivateBin\Vizhash16x16;
/**
* Comment
*
* Model of a PrivateBin comment.
*/
class Comment extends AbstractModel
{
/**
* Instance's parent.
*
* @access private
* @var Paste
*/
private $_paste;
/**
* Store the comment's data.
*
* @access public
* @throws Exception
*/
public function store()
{
// Make sure paste exists.
$pasteid = $this->getPaste()->getId();
if (!$this->getPaste()->exists()) {
throw new Exception('Invalid data.', 67);
}
// Make sure the discussion is opened in this paste and in configuration.
if (!$this->getPaste()->isOpendiscussion() || !$this->_conf->getKey('discussion')) {
throw new Exception('Invalid data.', 68);
}
// Check for improbable collision.
if ($this->exists()) {
throw new Exception('You are unlucky. Try again.', 69);
}
$this->_data['meta']['created'] = time();
// store comment
if (
$this->_store->createComment(
$pasteid,
$this->getParentId(),
$this->getId(),
$this->_data
) === false
) {
throw new Exception('Error saving comment. Sorry.', 70);
}
}
/**
* Delete the comment.
*
* @access public
* @throws Exception
*/
public function delete()
{
throw new Exception('To delete a comment, delete its parent paste', 64);
}
/**
* Test if comment exists in store.
*
* @access public
* @return bool
*/
public function exists()
{
return $this->_store->existsComment(
$this->getPaste()->getId(),
$this->getParentId(),
$this->getId()
);
}
/**
* Set paste.
*
* @access public
* @param Paste $paste
* @throws Exception
*/
public function setPaste(Paste $paste)
{
$this->_paste = $paste;
$this->_data['pasteid'] = $paste->getId();
}
/**
* Get paste.
*
* @access public
* @return Paste
*/
public function getPaste()
{
return $this->_paste;
}
/**
* Set parent ID.
*
* @access public
* @param string $id
* @throws Exception
*/
public function setParentId($id)
{
if (!self::isValidId($id)) {
throw new Exception('Invalid paste ID.', 65);
}
$this->_data['parentid'] = $id;
}
/**
* Get parent ID.
*
* @access public
* @return string
*/
public function getParentId()
{
if (!array_key_exists('parentid', $this->_data)) {
$this->_data['parentid'] = '';
}
return $this->_data['parentid'];
}
/**
* Sanitizes data to conform with current configuration.
*
* @access protected
* @param array $data
* @return array
*/
protected function _sanitize(array $data)
{
// we generate an icon based on a SHA512 HMAC of the users IP, if configured
$icon = $this->_conf->getKey('icon');
if ($icon != 'none') {
$pngdata = '';
$hmac = TrafficLimiter::getHash();
if ($icon == 'identicon') {
$identicon = new Identicon();
$pngdata = $identicon->getImageDataUri($hmac, 16);
} elseif ($icon == 'vizhash') {
$vh = new Vizhash16x16();
$pngdata = 'data:image/png;base64,' . base64_encode(
$vh->generate($hmac)
);
}
if ($pngdata != '') {
if (!array_key_exists('meta', $data)) {
$data['meta'] = array();
}
$data['meta']['icon'] = $pngdata;
}
}
return $data;
}
}