189 lines
4.6 KiB
PHP
189 lines
4.6 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 http://www.opensource.org/licenses/zlib-license.php The zlib/libpng License
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* @version 0.22
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*/
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/**
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* model_comment
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*
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* Model of a PrivateBin comment.
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*/
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class model_comment extends model_abstract
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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 model_paste
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*/
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private $_paste;
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/**
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* Get comment data.
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*
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* @access public
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* @throws Exception
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* @return stdClass
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*/
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public function get()
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{
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// @todo add support to read specific comment
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$comments = $this->_store->readComments($this->getPaste()->getId());
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foreach ($comments as $comment) {
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if (
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$comment->parentid == $this->getParentId() &&
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$comment->id == $this->getId()
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) {
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$this->_data = $comment;
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break;
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}
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}
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return $this->_data;
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}
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/**
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* Store the comment's data.
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*
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* @access public
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* @throws Exception
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* @return void
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*/
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public function store()
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{
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// Make sure paste exists.
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$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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// 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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// Check for improbable collision.
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if ($this->exists())
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throw new Exception('You are unlucky. Try again.', 69);
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$this->_data->meta->postdate = 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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json_decode(json_encode($this->_data), true)
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) === false
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) throw new Exception('Error saving comment. Sorry.', 70);
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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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* @return void
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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 model_paste $paste
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* @throws Exception
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* @return void
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*/
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public function setPaste(model_paste $paste)
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{
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$this->_paste = $paste;
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$this->_data->meta->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 model_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 $id
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* @throws Exception
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* @return void
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*/
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public function setParentId($id)
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{
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if (!self::isValidId($id)) throw new Exception('Invalid paste ID.', 65);
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$this->_data->meta->parentid = $id;
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}
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/**
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* Get parent ID.
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*
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* @access public
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* @return string
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*/
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public function getParentId()
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{
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if (!property_exists($this->_data->meta, 'parentid')) $this->_data->meta->parentid = '';
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return $this->_data->meta->parentid;
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}
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/**
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* Set nickname.
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*
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* @access public
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* @param string $nickname
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* @throws Exception
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* @return void
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*/
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public function setNickname($nickname)
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{
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if (!sjcl::isValid($nickname)) throw new Exception('Invalid data.', 66);
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$this->_data->meta->nickname = $nickname;
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// Generation of the anonymous avatar (Vizhash):
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// If a nickname is provided, we generate a Vizhash.
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// (We assume that if the user did not enter a nickname, he/she wants
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// to be anonymous and we will not generate the vizhash.)
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$vh = new vizhash16x16();
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$pngdata = $vh->generate(trafficlimiter::getIp());
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if ($pngdata != '')
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{
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$this->_data->meta->vizhash = 'data:image/png;base64,' . base64_encode($pngdata);
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}
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// Once the avatar is generated, we do not keep the IP address, nor its hash.
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}
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}
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