mirror of
https://github.com/lkddi/nexusphp.git
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393 lines
15 KiB
PHP
393 lines
15 KiB
PHP
<?php
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require_once('include/bittorrent_announce.php');
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require_once('include/benc.php');
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dbconn_announce();
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//1. BLOCK ACCESS WITH WEB BROWSERS AND CHEATS!
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$agent = $_SERVER["HTTP_USER_AGENT"];
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block_browser();
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//2. GET ANNOUNCE VARIABLES
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// get string type passkey, info_hash, peer_id, event, ip from client
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foreach (array("passkey","info_hash","peer_id","event") as $x)
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{
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if(isset($_GET["$x"]))
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$GLOBALS[$x] = $_GET[$x];
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}
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// get integer type port, downloaded, uploaded, left from client
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foreach (array("port","downloaded","uploaded","left","compact","no_peer_id") as $x)
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{
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$GLOBALS[$x] = 0 + $_GET[$x];
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}
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//check info_hash, peer_id and passkey
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foreach (array("passkey","info_hash","peer_id","port","downloaded","uploaded","left") as $x)
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if (!isset($x)) err("Missing key: $x");
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foreach (array("info_hash","peer_id") as $x)
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if (strlen($GLOBALS[$x]) != 20) err("Invalid $x (" . strlen($GLOBALS[$x]) . " - " . rawurlencode($GLOBALS[$x]) . ")");
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if (strlen($passkey) != 32) err("Invalid passkey (" . strlen($passkey) . " - $passkey)");
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//4. GET IP AND CHECK PORT
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$ip = getip(); // avoid to get the spoof ip from some agent
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if (!$port || $port > 0xffff)
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err("invalid port");
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if (!ip2long($ip)) //Disable compact announce with IPv6
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$compact = 0;
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// check port and connectable
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if (portblacklisted($port))
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err("Port $port is blacklisted.");
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//5. GET PEER LIST
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// Number of peers that the client would like to receive from the tracker.This value is permitted to be zero. If omitted, typically defaults to 50 peers.
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$rsize = 50;
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foreach(array("numwant", "num want", "num_want") as $k)
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{
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if (isset($_GET[$k]))
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{
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$rsize = 0 + $_GET[$k];
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break;
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}
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}
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// set if seeder based on left field
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$seeder = ($left == 0) ? "yes" : "no";
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// check passkey
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if (!$az = $Cache->get_value('user_passkey_'.$passkey.'_content')){
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$res = sql_query("SELECT id, downloadpos, enabled, uploaded, downloaded, class, parked, clientselect, showclienterror FROM users WHERE passkey=". sqlesc($passkey)." LIMIT 1");
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$az = mysql_fetch_array($res);
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$Cache->cache_value('user_passkey_'.$passkey.'_content', $az, 950);
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}
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if (!$az) err("Invalid passkey! Re-download the .torrent from $BASEURL");
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$userid = 0+$az['id'];
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//3. CHECK IF CLIENT IS ALLOWED
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$clicheck_res = check_client($peer_id,$agent,$client_familyid);
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if($clicheck_res){
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if ($az['showclienterror'] == 'no')
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{
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sql_query("UPDATE users SET showclienterror = 'yes' WHERE id = ".sqlesc($userid));
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$Cache->delete_value('user_passkey_'.$passkey.'_content');
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}
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err($clicheck_res);
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}
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elseif ($az['showclienterror'] == 'yes'){
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$USERUPDATESET[] = "showclienterror = 'no'";
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$Cache->delete_value('user_passkey_'.$passkey.'_content');
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}
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// check torrent based on info_hash
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if (!$torrent = $Cache->get_value('torrent_hash_'.$info_hash.'_content')){
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$res = sql_query("SELECT id, owner, sp_state, seeders, leechers, UNIX_TIMESTAMP(added) AS ts, banned FROM torrents WHERE " . hash_where("info_hash", $info_hash));
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$torrent = mysql_fetch_array($res);
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$Cache->cache_value('torrent_hash_'.$info_hash.'_content', $torrent, 350);
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}
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if (!$torrent) err("torrent not registered with this tracker");
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elseif ($torrent['banned'] == 'yes' && $az['class'] < $seebanned_class) err("torrent banned");
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// select peers info from peers table for this torrent
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$torrentid = $torrent["id"];
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$numpeers = $torrent["seeders"]+$torrent["leechers"];
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if ($seeder == 'yes'){ //Don't report seeds to other seeders
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$only_leech_query = " AND seeder = 'no' ";
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$newnumpeers = $torrent["leechers"];
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}
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else{
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$only_leech_query = "";
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$newnumpeers = $numpeers;
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}
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if ($newnumpeers > $rsize)
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$limit = " ORDER BY RAND() LIMIT $rsize";
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else $limit = "";
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$announce_wait = 30;
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$fields = "seeder, peer_id, ip, port, uploaded, downloaded, (".TIMENOW." - UNIX_TIMESTAMP(last_action)) AS announcetime, UNIX_TIMESTAMP(prev_action) AS prevts";
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$peerlistsql = "SELECT ".$fields." FROM peers WHERE torrent = ".$torrentid." AND connectable = 'yes' ".$only_leech_query.$limit;
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$res = sql_query($peerlistsql);
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$real_annnounce_interval = $announce_interval;
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if ($anninterthreeage && ($anninterthree > $announce_wait) && (TIMENOW - $torrent['ts']) >= ($anninterthreeage * 86400))
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$real_annnounce_interval = $anninterthree;
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elseif ($annintertwoage && ($annintertwo > $announce_wait) && (TIMENOW - $torrent['ts']) >= ($annintertwoage * 86400))
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$real_annnounce_interval = $annintertwo;
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$resp = "d" . benc_str("interval") . "i" . $real_annnounce_interval . "e" . benc_str("min interval") . "i" . $announce_wait . "e". benc_str("complete") . "i" . $torrent["seeders"] . "e" . benc_str("incomplete") . "i" . $torrent["leechers"] . "e" . benc_str("peers");
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$peer_list = "";
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unset($self);
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// bencoding the peers info get for this announce
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while ($row = mysql_fetch_assoc($res))
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{
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$row["peer_id"] = hash_pad($row["peer_id"]);
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// $peer_id is the announcer's peer_id while $row["peer_id"] is randomly selected from the peers table
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if ($row["peer_id"] === $peer_id)
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{
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$self = $row;
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continue;
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}
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if ($compact == 1){
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$longip = ip2long($row['ip']);
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if ($longip) //Ignore ipv6 address
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$peer_list .= pack("Nn", sprintf("%d",$longip), $row['port']);
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}
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elseif ($no_peer_id == 1)
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$peer_list .= "d" .
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benc_str("ip") . benc_str($row["ip"]) .
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benc_str("port") . "i" . $row["port"] . "e" .
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"e";
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else
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$peer_list .= "d" .
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benc_str("ip") . benc_str($row["ip"]) .
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benc_str("peer id") . benc_str($row["peer_id"]) .
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benc_str("port") . "i" . $row["port"] . "e" .
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"e";
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}
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if ($compact == 1)
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$resp .= benc_str($peer_list);
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else
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$resp .= "l".$peer_list."e";
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$resp .= "e";
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$selfwhere = "torrent = $torrentid AND " . hash_where("peer_id", $peer_id);
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//no found in the above random selection
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if (!isset($self))
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{
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$res = sql_query("SELECT $fields FROM peers WHERE $selfwhere LIMIT 1");
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$row = mysql_fetch_assoc($res);
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if ($row)
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{
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$self = $row;
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}
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}
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// min announce time
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if(isset($self) && $self['prevts'] > (TIMENOW - $announce_wait))
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err('There is a minimum announce time of ' . $announce_wait . ' seconds');
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// current peer_id, or you could say session with tracker not found in table peers
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if (!isset($self))
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{
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$valid = @mysql_fetch_row(@sql_query("SELECT COUNT(*) FROM peers WHERE torrent=$torrentid AND userid=" . sqlesc($userid)));
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if ($valid[0] >= 1 && $seeder == 'no') err("You already are downloading the same torrent. You may only leech from one location at a time.");
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if ($valid[0] >= 3 && $seeder == 'yes') err("You cannot seed the same torrent from more than 3 locations.");
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if ($az["enabled"] == "no")
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err("Your account is disabled!");
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elseif ($az["parked"] == "yes")
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err("Your account is parked! (Read the FAQ)");
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elseif ($az["downloadpos"] == "no")
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err("Your downloading priviledges have been disabled! (Read the rules)");
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if ($az["class"] < UC_VIP)
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{
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$ratio = (($az["downloaded"] > 0) ? ($az["uploaded"] / $az["downloaded"]) : 1);
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$gigs = $az["downloaded"] / (1024*1024*1024);
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if ($waitsystem == "yes")
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{
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if($gigs > 10)
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{
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$elapsed = strtotime(date("Y-m-d H:i:s")) - $torrent["ts"];
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if ($ratio < 0.4) $wait = 24;
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elseif ($ratio < 0.5) $wait = 12;
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elseif ($ratio < 0.6) $wait = 6;
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elseif ($ratio < 0.8) $wait = 3;
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else $wait = 0;
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if ($elapsed < $wait)
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err("Your ratio is too low! You need to wait " . mkprettytime($wait * 3600 - $elapsed) . " to start, please read $BASEURL/faq.php#id46 for details");
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}
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}
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if ($maxdlsystem == "yes")
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{
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if($gigs > 10)
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if ($ratio < 0.5) $max = 1;
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elseif ($ratio < 0.65) $max = 2;
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elseif ($ratio < 0.8) $max = 3;
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elseif ($ratio < 0.95) $max = 4;
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else $max = 0;
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if ($max > 0)
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{
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$res = sql_query("SELECT COUNT(*) AS num FROM peers WHERE userid='$userid' AND seeder='no'") or err("Tracker error 5");
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$row = mysql_fetch_assoc($res);
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if ($row['num'] >= $max) err("Your slot limit is reached! You may at most download $max torrents at the same time, please read $BASEURL/faq.php#id66 for details");
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}
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}
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}
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}
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else // continue an existing session
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{
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$upthis = $trueupthis = max(0, $uploaded - $self["uploaded"]);
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$downthis = $truedownthis = max(0, $downloaded - $self["downloaded"]);
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$announcetime = ($self["seeder"] == "yes" ? "seedtime = seedtime + $self[announcetime]" : "leechtime = leechtime + $self[announcetime]");
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$is_cheater = false;
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if ($cheaterdet_security){
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if ($az['class'] < $nodetect_security && $self['announcetime'] > 10)
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{
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$is_cheater = check_cheater($userid, $torrent['id'], $upthis, $downthis, $self['announcetime'], $torrent['seeders'], $torrent['leechers']);
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}
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}
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if (!$is_cheater && ($trueupthis > 0 || $truedownthis > 0))
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{
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$global_promotion_state = get_global_sp_state();
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if($global_promotion_state == 1)// Normal, see individual torrent
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{
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if($torrent['sp_state']==3) //2X
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{
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$USERUPDATESET[] = "uploaded = uploaded + 2*$trueupthis";
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$USERUPDATESET[] = "downloaded = downloaded + $truedownthis";
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}
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elseif($torrent['sp_state']==4) //2X Free
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{
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$USERUPDATESET[] = "uploaded = uploaded + 2*$trueupthis";
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}
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elseif($torrent['sp_state']==6) //2X 50%
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{
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$USERUPDATESET[] = "uploaded = uploaded + 2*$trueupthis";
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$USERUPDATESET[] = "downloaded = downloaded + $truedownthis/2";
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}
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else{
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if ($torrent['owner'] == $userid && $uploaderdouble_torrent > 0)
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$upthis = $trueupthis * $uploaderdouble_torrent;
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if($torrent['sp_state']==2) //Free
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{
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$USERUPDATESET[] = "uploaded = uploaded + $upthis";
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}
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elseif($torrent['sp_state']==5) //50%
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{
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$USERUPDATESET[] = "uploaded = uploaded + $upthis";
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$USERUPDATESET[] = "downloaded = downloaded + $truedownthis/2";
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}
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elseif($torrent['sp_state']==7) //30%
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{
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$USERUPDATESET[] = "uploaded = uploaded + $upthis";
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$USERUPDATESET[] = "downloaded = downloaded + $truedownthis*3/10";
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}
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elseif($torrent['sp_state']==1) //Normal
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{
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$USERUPDATESET[] = "uploaded = uploaded + $upthis";
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$USERUPDATESET[] = "downloaded = downloaded + $truedownthis";
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}
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}
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}
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elseif($global_promotion_state == 2) //Free
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{
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if ($torrent['owner'] == $userid && $uploaderdouble_torrent > 0)
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$upthis = $trueupthis * $uploaderdouble_torrent;
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$USERUPDATESET[] = "uploaded = uploaded + $upthis";
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}
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elseif($global_promotion_state == 3) //2X
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{
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if ($uploaderdouble_torrent > 2 && $torrent['owner'] == $userid && $uploaderdouble_torrent > 0)
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$upthis = $trueupthis * $uploaderdouble_torrent;
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else $upthis = 2*$trueupthis;
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$USERUPDATESET[] = "uploaded = uploaded + $upthis";
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$USERUPDATESET[] = "downloaded = downloaded + $truedownthis";
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}
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elseif($global_promotion_state == 4) //2X Free
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{
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if ($uploaderdouble_torrent > 2 && $torrent['owner'] == $userid && $uploaderdouble_torrent > 0)
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$upthis = $trueupthis * $uploaderdouble_torrent;
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else $upthis = 2*$trueupthis;
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$USERUPDATESET[] = "uploaded = uploaded + $upthis";
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}
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elseif($global_promotion_state == 5){ // 50%
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if ($torrent['owner'] == $userid && $uploaderdouble_torrent > 0)
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$upthis = $trueupthis * $uploaderdouble_torrent;
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$USERUPDATESET[] = "uploaded = uploaded + $upthis";
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$USERUPDATESET[] = "downloaded = downloaded + $truedownthis/2";
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}
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elseif($global_promotion_state == 6){ //2X 50%
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if ($uploaderdouble_torrent > 2 && $torrent['owner'] == $userid && $uploaderdouble_torrent > 0)
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$upthis = $trueupthis * $uploaderdouble_torrent;
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else $upthis = 2*$trueupthis;
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$USERUPDATESET[] = "uploaded = uploaded + $upthis";
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$USERUPDATESET[] = "downloaded = downloaded + $truedownthis/2";
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}
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elseif($global_promotion_state == 7){ //30%
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if ($torrent['owner'] == $userid && $uploaderdouble_torrent > 0)
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$upthis = $trueupthis * $uploaderdouble_torrent;
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$USERUPDATESET[] = "uploaded = uploaded + $upthis";
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$USERUPDATESET[] = "downloaded = downloaded + $truedownthis*3/10";
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}
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}
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}
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$dt = sqlesc(date("Y-m-d H:i:s"));
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$updateset = array();
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// set non-type event
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if (!isset($event))
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$event = "";
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if (isset($self) && $event == "stopped")
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{
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sql_query("DELETE FROM peers WHERE $selfwhere") or err("D Err");
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if (mysql_affected_rows())
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{
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$updateset[] = ($self["seeder"] == "yes" ? "seeders = seeders - 1" : "leechers = leechers - 1");
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sql_query("UPDATE snatched SET uploaded = uploaded + $trueupthis, downloaded = downloaded + $truedownthis, to_go = $left, $announcetime, last_action = ".$dt." WHERE torrentid = $torrentid AND userid = $userid") or err("SL Err 1");
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}
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}
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elseif(isset($self))
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{
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if ($event == "completed")
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{
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//sql_query("UPDATE snatched SET finished = 'yes', completedat = $dt WHERE torrentid = $torrentid AND userid = $userid");
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$finished = ", finishedat = ".TIMENOW;
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$finished_snatched = ", completedat = ".$dt . ", finished = 'yes'";
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$updateset[] = "times_completed = times_completed + 1";
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}
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sql_query("UPDATE peers SET ip = ".sqlesc($ip).", port = $port, uploaded = $uploaded, downloaded = $downloaded, to_go = $left, prev_action = last_action, last_action = $dt, seeder = '$seeder', agent = ".sqlesc($agent)." $finished WHERE $selfwhere") or err("PL Err 1");
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if (mysql_affected_rows())
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{
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if ($seeder <> $self["seeder"])
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$updateset[] = ($seeder == "yes" ? "seeders = seeders + 1, leechers = leechers - 1" : "seeders = seeders - 1, leechers = leechers + 1");
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sql_query("UPDATE snatched SET uploaded = uploaded + $trueupthis, downloaded = downloaded + $truedownthis, to_go = $left, $announcetime, last_action = ".$dt." $finished_snatched WHERE torrentid = $torrentid AND userid = $userid") or err("SL Err 2");
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}
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}
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else
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{
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$sockres = @pfsockopen($ip, $port, $errno, $errstr, 5);
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if (!$sockres)
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{
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$connectable = "no";
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}
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else
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{
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$connectable = "yes";
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@fclose($sockres);
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}
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sql_query("INSERT INTO peers (torrent, userid, peer_id, ip, port, connectable, uploaded, downloaded, to_go, started, last_action, seeder, agent, downloadoffset, uploadoffset, passkey) VALUES ($torrentid, $userid, ".sqlesc($peer_id).", ".sqlesc($ip).", $port, '$connectable', $uploaded, $downloaded, $left, $dt, $dt, '$seeder', ".sqlesc($agent).", $downloaded, $uploaded, ".sqlesc($passkey).")") or err("PL Err 2");
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if (mysql_affected_rows())
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{
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$updateset[] = ($seeder == "yes" ? "seeders = seeders + 1" : "leechers = leechers + 1");
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$check = @mysql_fetch_row(@sql_query("SELECT COUNT(*) FROM snatched WHERE torrentid = $torrentid AND userid = $userid"));
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if (!$check['0'])
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sql_query("INSERT INTO snatched (torrentid, userid, ip, port, uploaded, downloaded, to_go, startdat, last_action) VALUES ($torrentid, $userid, ".sqlesc($ip).", $port, $uploaded, $downloaded, $left, $dt, $dt)") or err("SL Err 4");
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else
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sql_query("UPDATE snatched SET to_go = $left, last_action = ".$dt ." WHERE torrentid = $torrentid AND userid = $userid") or err("SL Err 3.1");
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}
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}
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if (count($updateset)) // Update only when there is change in peer counts
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{
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$updateset[] = "visible = 'yes'";
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$updateset[] = "last_action = $dt";
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sql_query("UPDATE torrents SET " . join(",", $updateset) . " WHERE id = $torrentid");
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}
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if($client_familyid != 0 && $client_familyid != $az['clientselect'])
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$USERUPDATESET[] = "clientselect = ".sqlesc($client_familyid);
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if(count($USERUPDATESET) && $userid)
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{
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sql_query("UPDATE users SET " . join(",", $USERUPDATESET) . " WHERE id = ".$userid);
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}
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benc_resp_raw($resp);
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?>
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