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torrent_functions.php
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torrent_functions.php
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<?php
require_once("BDecode.php");
require_once("BEncode.php");
function classicoutput($array, $infohash)
{
if (isset($array["info"]["pieces"]))
$array["info"]["pieces"] = "<i>Checksum data (" . strlen ($array["info"]["pieces"]) / 20 . " pieces)</i>";
echo "Info hash: <TT>$infohash</TT><br>";
echo "<pre>";
print_r(cleaner($array));
echo "</pre>";
}
function announceoutput($array)
{
if (!isset($array["peers"][0]))
{
echo "Not a tracker announce block. Falling back on classic.<br><br>";
classicoutput($array, "(Not checked)");
exit;
}
echo "<h2>Client configuration options</h2>";
echo "<table border=0 cellpadding=2 cellspacing=2>";
foreach ($array as $left => $right)
{
if ($left == "peers")
continue;
if (is_array($right))
$myright = "<I>Error</I>";
else
$myright = $right;
echo "<tr><td align=right>".$left."</td><td>=</td><td>".$myright."</td></tr>\n";
}
echo "</table><br><h2>Peers</h2><pre>";
foreach ($array["peers"] as $data)
{
if (!is_array($data)) // special case: [0] == true means empty list
{
echo "(Empty results)\n";
break;
}
echo bin2hex($data["peer id"])." at ".$data["ip"].":".$data["port"]."\n";
}
echo "</pre>";
}
function escapeURL($url)
{
$ret = "";
$i=0;
while (strlen($url) > $i)
{
$ret .= "%".$url[$i].$url[$i + 1];
$i+=2;
}
return $ret;
}
function stringcleaner($str)
{
/* WARNING:
It appears PHP doesn't handle null bytes in the key portion
of string-indexed arrays. $array["abcd\0e"] = $something
will find itself with only 4 letters in the key. This may
cause some confusion when using /scrape, for example.
*/
$len = strlen($str);
for ($i=0; $i < $len; $i ++)
{
if (ord($str[$i]) < 32 || ord($str[$i]) > 128)
return "<B>".bin2hex($str)."</B>";
}
return $str;
}
function cleaner($array)
{
if (!is_array($array))
return $array;
$newarray = array();
foreach($array as $left => $right)
{
if (is_string($left))
$newleft = stringcleaner(stripslashes($left));
else
$newleft = $left;
if (is_string($right))
$newright = stringcleaner($right);
else if (is_array($right))
$newright = cleaner($right);
else
$newright = $right;
$newarray[$newleft] = $newright;
}
return $newarray;
}
if (isset($_POST["output"]))
{
if (!is_numeric($_POST["output"]))
$output = -1;
else
$output = $_POST["output"];
if ($output > 3 || $output < -1)
$output = -1;
}
else if (isset($_GET["style"]))
$output = htmlspecialchars($_GET["style"], ENT_QUOTES, 'UTF-8');
else
$output = -1;
//used by index.php to show information on torrent
if (isset($_POST["hash"]))
{
if (!isset($status)) //not coming from newtorrents page
{
?>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<title>Torrent Information</title>
<meta http-equiv="Content-Type" content="text/html; charset=iso-8859-1" />
<link rel="stylesheet" type="text/css" href="./css/style.css" />
</head>
<body>
<?php
}
//lookup file
require_once("config.php");
require_once("funcsv2.php");
$query = "SELECT filename FROM ".$prefix."namemap WHERE info_hash = '" . htmlspecialchars($_POST["hash"], ENT_QUOTES, 'UTF-8') . "'";
$results = $sql->query($query);
$data = $results->fetch_row();
//find filename and set it
$_FILES["torrent"]["tmp_name"] = "torrents/" . $data[0] . ".torrent";
if (!isset($status))
echo "<h1>" . $data[0] . "</h1>";
echo "<a href=\"index.php\"><img src=\"images/stats.png\" border=\"0\" class=\"icon\" alt=\"Tracker Statistics\" title=\"Tracker Statistics\" /></a><a href=\"index.php\">Return to Statistics Page</a><br>\n";
}
//main displaying and processing
if (isset($_FILES["torrent"]) || isset($_POST["url"]) || isset($_GET["url"]))
{
if (strlen($_FILES["torrent"]["tmp_name"]) > 0 && file_exists($_FILES["torrent"]["tmp_name"])) //for DumpTorrentCGI.php, and index.php
{
$fd = fopen($_FILES["torrent"]["tmp_name"], "rb") or die(errorMessage() . "File upload error 1</p>");
if (!isset($_POST["hash"]))
is_uploaded_file($_FILES["torrent"]["tmp_name"]) or die(errorMessage() . "File upload error 2</p>");
$alltorrent = fread($fd, filesize($_FILES["torrent"]["tmp_name"]));
fclose($fd);
}
else if (file_exists("torrents/" . $filename . ".torrent")) //for newtorrents.php
{
$fd = fopen("torrents/" . $filename . ".torrent", "rb") or die(errorMessage() . "File upload error 1</p>");
$alltorrent = fread($fd, filesize("torrents/" . $filename . ".torrent"));
fclose($fd);
}
else if (isset($_POST["url"]))
{
(strlen($_POST["url"]) > 0) or die(errorMessage() . "Logic error in script.</p>");
if (strtolower(substr($_POST["url"], 0, 7)) != "http://")
die(errorMessage() . "Error: you must specify \"http://\" as part of the URL.</p>");
$fd = fopen($_POST["url"], "rb") or die(errorMessage() . "File download error.</p>");
$alltorrent = "";
while (!feof($fd))
{
$alltorrent .= fread($fd, 4096);
if (strlen($alltorrent) > 50000)
die(errorMessage() . "File too large to download.</p>");
}
fclose($fd);
}
else if (isset($_GET["url"]))
{
(strlen($_GET["url"]) > 0) or die(errorMessage() . "Logic error in script.</p>");
if (strtolower(substr($_GET["url"], 0, 7)) != "http://")
die(errorMessage() . "Error: you must specify \"http://\" as part of the URL</p>");
$fd = fopen($_GET["url"], "rb") or die(errorMessage() . "File download error.</p>");
$alltorrent = "";
while (!feof($fd))
{
$alltorrent .= fread($fd, 4096);
if (strlen($alltorrent) > 50000)
die(errorMessage() . "File too large to download.</p>");
}
fclose($fd);
}
$array = BDecode($alltorrent);
if (!isset($array))
{
echo errorMessage() . "There was an error handling your uploaded torrent. It may be corrupted. Are you sure it's of type .torrent?</p>";
exit;
}
if ($array == false)
{
echo errorMessage() . "There was an error handling your uploaded torrent. It may be corrupted. Are you sure it's of type .torrent?</p>";
exit;
}
// Making torrents look nice: If $array["info"] exists, it is used to calculate
// an Info_hash value.
$infohash = "<I>Not applicable</I>";
if (isset($array["info"]))
if (is_array($array["info"]))
{
if (function_exists("sha1"))
$infohash = @sha1(BEncode($array["info"]));
else
$infohash = "(No SHA1 available to calculate info_hash)</TT><br>";
// If the "pieces" section exists, it is replaced by some nice text.
// The alternative is pages of garbage.
}
// Auto-detect file type
if ($output == -1)
{
if (isset($array["announce"]) && isset($array["info"]))
$output = 1;
else if (isset($array["files"]))
$output = 2;
else if (isset($array["peers"]))
$output = 3;
else
$output = 0;
}
// Output information.
if ($output == 0)
{
classicoutput($array, $infohash);
}
if ($output == 1)
{
if (!isset($array["info"]))
{
echo "Error: not a torrent file. Falling back on classic.<br><br>";
classicoutput($array, "<I>Not applicable</I>");
exit;
}
echo "<br><h2>Non-file data:</h2>";
echo "<table border=0 cellpadding=2 cellspacing=2><tr>";
echo "<td align=right>Info hash</td><td>=</td><td><TT>$infohash</TT></td></tr>\n";
echo "<tr><td align=right>Announce URL</td><td>=</td><td>".$array["announce"]."</td></tr>\n";
if (isset($array["creation date"]))
{
echo "<tr><td align=right>Creation date</td><td>=</td><td>";
if (is_numeric($array["creation date"]))
echo date("F j, Y", $array["creation date"]);
else
echo $array["creation date"];
echo "</td></tr>";
}
if ($array["info"]["private"] == 1)
echo "<tr><td align=right>Private (No DHT Allowed)</td><td>=</td><td>yes</td></tr>\n";
else
echo "<tr><td align=right>Private (No DHT Allowed)</td><td>=</td><td>no</td></tr>\n";
foreach ($array as $left => $right)
{
if ($left == "announce" || $left == "info" || $left == "creation date")
continue; // skip
if ($left == "url-list" || $left == "httpseeds")
{
echo "<tr><td align=right>$left</td><td>=</td><td>";
print_r(cleaner($array[$left]));
echo "</td></tr>\n";
continue;
}
echo "<tr><td align=right>$left</td><td>=</td><td>".$array[$left]."</td></tr>\n";
}
echo "</table><br><br><h2>File data:</h2><pre>";
$info = $array["info"];
$total_size = 0;
if (isset($info["files"]))
{
echo "Directory: ".$info["name"]."\nFiles:\n";
foreach ($info["files"] as $file)
{
if (isset($file["path"][1]))
{
echo " " . $file["path"][0];
for ($i=1; isset($file["path"][$i]); $i++)
echo "/".$file["path"][$i];
}
else
echo " " . $file["path"][0];
echo " (".$file["length"]." bytes)\n";
$total_size = $total_size + $file["length"];
}
echo "\n";
}
else
{
echo "File: ".$info["name"]. " (".$info["length"]." bytes)\n\n";
$total_size = $info["length"];
}
echo "Piece length: ".$info["piece length"]."\nNumber of pieces: ". strlen ($array["info"]["pieces"])/20 . "\n\n";
if ($total_size < 1024) //dealing with bytes
echo "Total Size: " . $total_size . " bytes</pre>\n";
elseif ($total_size < 1048576) //dealing with kilobytes
echo "Total Size: " . round($total_size/1024, 2) . " kilobytes</pre>\n";
elseif ($total_size < 1073741824) //dealing with megabytes
echo "Total Size: " . round($total_size/1048576, 2) . " megabytes</pre>\n";
elseif ($total_size >= 1073741824) //dealing with gigabytes
echo "Total Size: " . round($total_size/1073741824, 2) . " gigabytes</pre>\n";
}
if ($output == 2)
{
if (!isset($array["files"]))
{
echo "Error: not /scrape data. Falling back on classic.<br><br>";
classicoutput($array, $infohash);
exit;
}
$files = $array["files"];
// Copy and paste from python tracker output, with some
// formatting changes
echo '<table cellpadding=2 cellspacing=2 border=1 summary="files"><tr><th>info hash</th><th align="right">complete</th><th align="right">downloading</th><th>finished downloads</th><th>file name</th></tr>';
foreach ($files as $hash => $data)
{
echo "<tr><td><TT>".bin2hex(stripslashes($hash))."</TT>";
echo "</td><td>".$data["complete"]."</td><td>".$data["incomplete"]."</td><td>";
if (isset($data["downloaded"]))
echo $data["downloaded"];
else
echo "-";
echo "</td><td>";
if (isset($data["name"]))
echo $data["name"];
else
echo "(unavailable)";
echo "</td></tr>";
}
echo "</table>";
}
// http://tracker.com:6969/announce
if ($output == 3)
{
announceoutput($array);
}
if (isset($filename) && file_exists("torrents/" . $filename . ".torrent")) //for newtorrents.php
{
echo "<a href=\"newtorrents.php\"><img src=\"images/add.png\" border=\"0\" class=\"icon\" alt=\"Add Torrent\" title=\"Add Torrent\" /></a><a href=\"newtorrents.php\">Add Another Torrent</a><br>\n";
//add in Bittornado HTTP seeding spec
if (@$_POST["httpseed"] == "enabled")
{
//add information into database
$info = $array["info"] or die("Invalid torrent file.");
$fsbase = $_POST["relative_path"];
if (isset($info["files"])) // Multi-file
{
if (substr($fsbase, -1) != '/')
$fsbase .= '/';
$pieceno = 0;
$fileno = 0;
$piecelen = 0;
// Iterate for each file.
while (isset($info["files"][$fileno]))
{
if ($piecelen == $info["piece length"])
{
$pieceno++;
$piecelen = 0;
}
$startoffset = $piecelen;
$startpiece = $pieceno;
$filesize = $info["files"][$fileno]["length"];
while (true)
{
$sub = min($info["piece length"]-$piecelen, $filesize);
$piecelen += $sub;
$filesize -= $sub;
if ($filesize == 0)
break;
if ($piecelen == $info["piece length"])
{
$pieceno++;
$piecelen = 0;
}
if ($piecelen > $info["piece length"])
die("Logic error in script. Please report to the author.");
}
$filename = $fsbase;
if (isset($info["files"][$fileno]["path"][1]))
{
$filename .= $file["path"][0];
for ($i=1; isset($info["files"][$fileno]["path"][$i]); $i++)
$filename .= "/".$info["files"][$fileno]["path"][$i];
}
else
$filename .= $info["files"][$fileno]["path"][0];
$filename = $sql->real_escape_string($filename);
$sql->query("INSERT INTO ".$prefix."webseedfiles (info_hash,filename,startpiece,endpiece,startpieceoffset,fileorder) values (\"$hash\", \"$filename\", $startpiece, $pieceno, $startoffset, $fileno)");
$fileno++;
}
} // end of multi-file section
else //single file
$sql->query("INSERT INTO ".$prefix."webseedfiles (info_hash,filename,startpiece,endpiece,startpieceoffset,fileorder) values (\"$hash\", \"".mysql_real_escape_string($fsbase)."\", 0, ". (strlen($array["info"]["pieces"])/20 - 1).", 0, 0)");
}
if (@$_POST["getrightseed"] == "enabled" || @$_POST["httpseed"] == "enabled") //only do one write
{
//edit torrent file
$read_httpseed = fopen("torrents/" . $filename . ".torrent", "rb");
$binary_data = fread($read_httpseed, filesize("torrents/" . $filename . ".torrent"));
$data_array = BDecode($binary_data);
if ($_POST["httpseed"] == "enabled")
$data_array["httpseeds"][0] = $website_url . substr($_SERVER['REQUEST_URI'], 0, -15) . "seed.php";
if ($_POST["getrightseed"] == "enabled")
$data_array["url-list"][0] = $_POST["httpftplocation"];
$to_write = BEncode($data_array);
fclose($read_httpseed);
//write torrent file
$write_httpseed = fopen("torrents/" . $filename . ".torrent", "wb");
fwrite($write_httpseed, $to_write);
fclose($write_httpseed);
}
//add in piecelength and number of pieces
$query = "UPDATE ".$prefix."summary SET piecelength=\"" . $info["piece length"] . "\", numpieces=\"" . strlen ($array["info"]["pieces"])/20 . "\" WHERE info_hash=\"" . $hash . "\"";
$sql->query($query);
}
if (!isset($_POST["hash"])) //don't display admin link if coming from index.php
echo "<a href='admin.php'><img src='images/admin.png' border='0' class='icon' alt='Admin Page' title='Admin Page' /></a><a href='admin.php'>Return to Admin Page</a><br>";
?>
<a href="index.php"><img src="images/stats.png" border="0" class="icon" alt="Tracker Statistics" title="Tracker Statistics" /></a><a href="index.php">Return to Statistics Page</a><br>
</body></html>
<?php
exit();
}
?>