{

var $filename;

var $fileref = NULL;

var $title;

var $language;

var $author;

var $date;

var $content;

var $ip;

var $private = false;

var $ref = NULL;

var $hash;

var $crypt = NULL;

var $answers = array();

/**

* Create a new paste or open a existing file

*/

function __construct($filename=NULL)

{

if (!empty($filename))

{

$this->filename = Paste::get_path($filename);

if ($this->load())

$this->fileref = $filename;

}

}

static function cxor($msg, $cle)

{

$cle = hash("whirlpool", $cle);

$xor = NULL;

for($i = 0; $i < strlen($msg); $i++)

$xor .= substr($msg,$i,1) ^ substr($cle, $i % strlen($cle), 1);

return $xor;

}

function crypt($key)

{

if (!empty($this->crypt))

$this->crypt = Paste::cxor($this->crypt, $key);

else

$this->crypt = Paste::cxor(sha1($key), $key);

if ($this->crypt == sha1($key))

$this->content = Paste::cxor(base64_decode($this->content), $key);

else

$this->content = base64_encode(Paste::cxor($this->content, $key));

}

/**

* Load or reload the file and set attributes

*/

function load()

{

if (is_file($this->filename))

{

$doc = new DOMDocument();

$doc->load($this->filename);

$this->title = $doc->getElementsByTagName("title")->item(0)->textContent;

$this->language = strtolower(

$doc->getElementsByTagName("language")->item(0)->textContent);

$this->date = $doc->getElementsByTagName("date")->item(0)->textContent;

$this->author = $doc->getElementsByTagName("author")->item(0)->textContent;

$this->content = $doc->getElementsByTagName("content")->item(0)->textContent;

if ($doc->getElementsByTagName("ref")->length > 0)

$this->ref = $doc->getElementsByTagName("ref")->item(0)->textContent;

else

$this->ref = NULL;

$this->ip = $doc->getElementsByTagName("ip")->item(0)->textContent;

if ($doc->getElementsByTagName("hash")->length > 0)

$this->hash = $doc->getElementsByTagName("hash")->item(0)->textContent;

else

$this->hash = NULL;

if ($doc->getElementsByTagName("private")->length > 0)

$this->private = true;

if ($doc->getElementsByTagName("crypt")->length > 0)

$this->crypt = base64_decode($doc->getElementsByTagName("crypt")->item(0)->textContent);

else

$this->crypt = NULL;

for ($i = 0; $i < $doc->getElementsByTagName("answer")->length; $i++)

$this->answers[] = $doc->getElementsByTagName("answer")->item($i)->textContent;

//Check the lang exists

if (empty($this->language) || !is_file(GESHI_DIR.$this->language.".php"))

$this->language = "text";

return TRUE;

}

else

return FALSE;

}

static function get_path($filename)

{

return DESTINATION . "/" . $filename . ".xml";

}

static function speed_cmp($filename, $hash)

{

if (is_file($filename))

{

$doc = new DOMDocument();

$doc->load($filename);

return ($hash == $doc->getElementsByTagName("hash")->item(0)->textContent);

}

else

return FALSE;

}

/**

* Save the current paste

*/

function save($filename=NULL)

{

$this->hash = base64_encode(sha1($this->content, true));

if (empty($filename))

{

$i = 0;

do

{

$filename = substr(

str_replace("+", "",

str_replace("/", "",

$this->hash)), $i++, NB_CHAR);

}

//If the file already exists, find another name if the content is different

while(is_file(Paste::get_path($filename))

&& Paste::speed_cmp(Paste::get_path($filename), $this->hash));

}

$this->filename = $filename;

$xml = new DOMDocument('1.0', 'UTF-8');

$xml->formatOutput = true;

$xml_paste = $xml->createElement("paste");

$xml_paste->appendChild(

$xml->createElement("title", $this->title));

$xml_paste->appendChild(

$xml->createElement("author", $this->author));

$xml_paste->appendChild(

$xml->createElement("language", $this->language));

$xml_paste->appendChild(

$xml->createElement("date", $this->date));

$xml_paste->appendChild(

$xml->createElement("ip", $this->ip));

$cnt = $xml->createElement("content");

$cnt->appendChild($xml->createCDATASection($this->content));

$xml_paste->appendChild($cnt);

if (!empty($this->crypt))

$xml_paste->appendChild(

$xml->createElement("crypt", base64_encode($this->crypt)));

if (!empty($this->ref))

{

//Also indicate in the parent file

$parent = new Paste($this->ref);

//Does the parent exist?

if ($parent->load())

{

$xml_paste->appendChild(

$xml->createElement("ref", $this->ref));

if ($parent->add_answer($this->filename))

$parent->save();

}

}

foreach ($this->answers as $a)

$xml_paste->appendChild(

$xml->createElement("answer", $a));

$xml_paste->appendChild(

$xml->createElement("hash", $this->hash));

if ($this->is_private ())

$xml_paste->appendChild(

$xml->createElement("private"));

$xml->appendChild($xml_paste);

if ($xml->save(Paste::get_path($this->filename)))

return $this->filename;

else

{

die ("Sorry, an error occured while saving the file. Please try again later.");

return FALSE;

}

}

/**

* Set attributes from an dictionnary like _POST

*/

function create($dict)

{

$this->title = $dict["title"];

$this->author = $dict["author"];

$this->language = $dict["lang"];

$this->private = intval($dict["hide"]);

$this->date = time();

$this->ip = $_SERVER["REMOTE_ADDR"];

if (isset($dict["ref"]))

$this->ref = $dict["ref"];

//TODO: allow uploading file

$this->content = $dict["content"];

if (!empty($dict["crypt"]))

$this->crypt($dict["crypt"]);

}

/**

* Generate a subtitle

*/

function get_subtitle()

{

if (empty($this->author))

$author = "<em>un inconnu</em>";

else

$author = htmlentities($this->author);

return "Posté par ".$author.", le ".strftime("%A %e %B %G à %H:%M:%S",

$this->date);

}

/**

* Get the ref HTML part of the paste

*/

function get_ref($is_diff)

{

if (!empty($this->ref))

{

if (empty($is_diff))

return '<a href="/?'.$this->ref.'">Voir l\'original</a> '.

'<a href="/?'.$this->fileref.':'.$this->ref.'">Voir la différence</a>';

else

return '<a href="/?'.$this->fileref.'">Cacher les différences</a> ';

}

else

return "";

}

function get_gen()

{

if (!empty($_POST["passwd"]))

$passwd = "=".$_POST["passwd"];

else

$passwd = "";

$raw = '<a href="/raw.php?'.$this->fileref.$passwd.'">Raw</a> ';

if ($this->language == "latex")

return $raw.'<a href="/gen.php?'.$this->fileref.$passwd.'">Générer le document</a> ';

else

return $raw;

}

/**

* Get the parsed code

*/

function get_code()

{

require_once("geshi/geshi.php");

$geshi = new GeSHi($this->content, $this->language);

$geshi->enable_line_numbers(GESHI_FANCY_LINE_NUMBERS, 5);

return $geshi->parse_code();

}

/**

* Get the parsed code with diff

*/

function get_diff($diff)

{

require_once("simplediff.php");

return nl2br(htmlDiff($diff->content, $this->content));

}

function add_answer($ref)

{

if (!in_array($ref, $this->answers) && $ref != $this->fileref)

{

$this->answers[] = $ref;

return true;

}

else

return false;

}

function show_answers()

{

$nb = count($this->answers);

if ($nb > 0)

{

$ret = '<div id="res">Des réponses à ce paste ont été publiées : <ul>';

foreach($this->answers as $a)

$ret .= '<li><a href="?'.$a.'">'.$a.'</a></li>';

return $ret.'</ul></div>';

}

}

function is_private()

{

return $this->private;

}

function export_to_file($fileto)

{

file_put_contents($fileto, $this->content);

}