-
Notifications
You must be signed in to change notification settings - Fork 9
/
seed.php
176 lines (143 loc) · 4.58 KB
/
seed.php
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
<?php
//Used for HTTP seeding
//Requires information in torrent file for client to use
require_once("config.php");
header("Content-Type: text/plain");
//error_log("One");
if (!isset($_GET["info_hash"]) || !isset($_GET["piece"]))
reject("400 Bad Request");
if (get_magic_quotes_gpc())
$info_hash=stripslashes($_GET["info_hash"]);
else
$info_hash=$_GET["info_hash"];
$piece = $_GET["piece"];
//error_log("Two");
if (!is_numeric($piece) || strlen($info_hash) != 20)
reject("400 Bad Request");
$info_hash = bin2hex($info_hash);
//error_log("Info hash=$info_hash, piece numnber=$piece");
require_once("config.php");
//change from KB to bytes
$max_upload_rate = $GLOBALS["max_upload_rate"] * 1024;
function Lock($hash, $time = 0)
{
$results = mysql_query("SELECT GET_LOCK('$hash', $time)");
$string = mysql_fetch_row($results);
if (strcmp($string[0], "1") == 0)
{
//error_log("Got lock $hash");
return true;
}
//error_log("Failed to lock $hash");
return false;
}
function Unlock($hash)
{
global $sql;
$sql->query("SELECT RELEASE_LOCK('$hash')");
}
function reject($error = "503 Service Temporarily Unavailable", $message="")
{
header("HTTP/1.0 $error");
echo $message;
die;
}
if (!Lock("WebSeedLock", 2))
reject();
$result = $sql->query("SELECT (UNIX_TIMESTAMP() - started) FROM ".$prefix."speedlimit");
$row = $result->fetch_row();
// If nothing has happened for a little while, do NOT
// let that average enable massive bursts.
if ($row[0] > 180)
$sql->query("UPDATE ".$prefix."speedlimit SET started=UNIX_TIMESTAMP()-1, total_uploaded=total_uploaded+uploaded, uploaded=0");
$result = $sql->query("SELECT uploaded / (UNIX_TIMESTAMP() - started) FROM ".$prefix."speedlimit");
$row = $result->fetch_row();
if ((float)($row[0]) > $max_upload_rate)
{
$result = $sql->query("SELECT (uploaded/". $max_upload_rate . "+started) - UNIX_TIMESTAMP() FROM ".$prefix."speedlimit");
$row = $result->fetch_row();
reject("503 Service Temporarily Unavailable", (int)$row[0] + mt_rand(1,30));
}
$result = $sql->query("SELECT seeds FROM ".$prefix."summary WHERE info_hash=$info_hash");
if ($result)
{
//error_log("Doing PHPBT check");
$row = $result->fetch_assoc();
if ($row["seeds"] > 5) //if there are seeds available, don't use HTTP seeding
reject();
}
if ($result->num_rows == 0) //hash isn't even in database!
{
//reject em!
reject();
}
Unlock("WebSeedLock");
// Max uploads check
for ($lockno=0; $lockno < $GLOBALS["max_uploads"]; $lockno++)
if (Lock("WebSeed--$lockno", 0))
break;
//error_log("Lockno=$lockno");
if ($lockno == $GLOBALS["max_uploads"])
reject();
// Get to work!
$result = $sql->query("SELECT ".$prefix."summary.piecelength, ".$prefix."summary.numpieces FROM ".$prefix."summary WHERE info_hash=\"$info_hash\"");
if (!$result)
reject("500 Internal Server Error");
$config = $result->etch_assoc();
if (!$config)
reject("403 Forbidden");
$result = $sql->query("SELECT * FROM ".$prefix."webseedfiles WHERE info_hash=\"$info_hash\" ORDER BY fileorder");
if ($config["numpieces"] < $piece || $piece < 0)
reject("400 Bad Request");
// Data to return, and accounting.
$xmit = "";
$xmitbytes = 0;
while($row = $result->fetch_assoc())
{
if (!($piece >= $row["startpiece"] && $piece <= $row["endpiece"]))
continue;
$offset = ($row["startpiece"] == $piece) ? 0 : (($piece - $row["startpiece"])*$config["piecelength"] - $row["startpieceoffset"]);
$fd = fopen($row["filename"], "rb") or reject("500 Internal Server Error");
if (fseek($fd, $offset) != 0)
reject("500 Internal Server Error");
$data = fread($fd, $config["piecelength"]-$xmitbytes);
if ($data === false)
reject("500 Internal Server Error");
$xmit .= $data;
$xmitbytes += strlen($data);
if ($xmitbytes == $config["piecelength"])
break;
fclose($fd);
}
// Header is most likely already: 200 Ok
//error_log("Send length: $xmitbytes == ".strlen($xmit));
if (isset($_GET["ranges"]))
{
$myxmit = "";
$ranges = explode(",", $_GET["ranges"]);
foreach ($ranges as $blocks)
{
$startstop = explode("-", $blocks);
if (!is_numeric($startstop[0]) || !is_numeric($startstop[1]))
reject("400 Bad Request");
if (isset($startstop[2]))
reject("400 Bad Request");
$start = $startstop[0];
$stop = $startstop[1];
if ($start > $stop)
reject("400 Bad Request");
$myxmit .= substr($xmit, $start, $stop-$start+1);
}
header("Content-Length: ".strlen($myxmit));
$sql->query("UPDATE ".$prefix."speedlimit SET uploaded=uploaded+".strlen($myxmit));
echo $myxmit;
}
else
{
$sql->query("UPDATE ".$prefix."speedlimit SET uploaded=uploaded+$xmitbytes");
header("Content-Length: $xmitbytes");
echo $xmit;
}
Unlock("WebSeed--$lockno");
exit;
?>