Files
nexusphp/public/announce.php

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<?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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do_log(nexus_json_encode($_SERVER));
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//1. BLOCK ACCESS WITH WEB BROWSERS AND CHEATS!
$agent = $_SERVER["HTTP_USER_AGENT"];
block_browser();
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//check authkey
if (!empty($_REQUEST['authkey'])) {
$arr = explode('|', $_REQUEST['authkey']);
if (count($arr) != 3) {
err('Invalid authkey');
}
$torrentId = $arr[0];
$uid = $arr[1];
$torrentRep = new \App\Repositories\TorrentRepository();
try {
$decrypted = $torrentRep->checkTrackerReportAuthKey($_REQUEST['authkey']);
} catch (\Exception $exception) {
err($exception->getMessage());
}
if (empty($decrypted)) {
err('Invalid authkey');
}
$userInfo = \App\Models\User::query()->where('id', $uid)->first(['id', 'passkey']);
if (!$userInfo) {
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err('Invalid authkey');
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}
$_GET['passkey'] = $userInfo->passkey;
}
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//2. GET ANNOUNCE VARIABLES
// get string type passkey, info_hash, peer_id, event, ip from client
foreach (array("passkey","info_hash","peer_id","event") as $x)
{
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if(isset($_GET[$x]))
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$GLOBALS[$x] = $_GET[$x];
}
// get integer type port, downloaded, uploaded, left from client
foreach (array("port","downloaded","uploaded","left","compact","no_peer_id") as $x)
{
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$GLOBALS[$x] = intval($_GET[$x] ?? 0);
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}
//check info_hash, peer_id and passkey
foreach (array("passkey","info_hash","peer_id","port","downloaded","uploaded","left") as $x)
if (!isset($x)) err("Missing key: $x");
foreach (array("info_hash","peer_id") as $x)
if (strlen($GLOBALS[$x]) != 20) err("Invalid $x (" . strlen($GLOBALS[$x]) . " - " . rawurlencode($GLOBALS[$x]) . ")");
if (strlen($passkey) != 32) err("Invalid passkey (" . strlen($passkey) . " - $passkey)");
//4. GET IP AND CHECK PORT
$ip = getip(); // avoid to get the spoof ip from some agent
if (!$port || $port > 0xffff)
err("invalid port");
if (!ip2long($ip)) //Disable compact announce with IPv6
$compact = 0;
// check port and connectable
if (portblacklisted($port))
err("Port $port is blacklisted.");
//5. GET PEER LIST
// 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.
$rsize = 50;
foreach(array("numwant", "num want", "num_want") as $k)
{
if (isset($_GET[$k]))
{
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$rsize = intval($_GET[$k] ?? 0);
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break;
}
}
// set if seeder based on left field
$seeder = ($left == 0) ? "yes" : "no";
// check passkey
if (!$az = $Cache->get_value('user_passkey_'.$passkey.'_content')){
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$res = sql_query("SELECT id, downloadpos, enabled, uploaded, downloaded, class, parked, clientselect, showclienterror,passkey FROM users WHERE passkey=". sqlesc($passkey)." LIMIT 1");
$az = $currentUser = mysql_fetch_array($res);
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$Cache->cache_value('user_passkey_'.$passkey.'_content', $az, 950);
}
if (!$az) err("Invalid passkey! Re-download the .torrent from $BASEURL");
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$userid = intval($az['id'] ?? 0);
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$GLOBALS["CURUSER"] = $currentUser;
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//3. CHECK IF CLIENT IS ALLOWED
$clicheck_res = check_client($peer_id,$agent,$client_familyid);
if($clicheck_res){
if ($az['showclienterror'] == 'no')
{
sql_query("UPDATE users SET showclienterror = 'yes' WHERE id = ".sqlesc($userid));
$Cache->delete_value('user_passkey_'.$passkey.'_content');
}
err($clicheck_res);
}
elseif ($az['showclienterror'] == 'yes'){
$USERUPDATESET[] = "showclienterror = 'no'";
$Cache->delete_value('user_passkey_'.$passkey.'_content');
}
// check torrent based on info_hash
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$checkTorrentSql = "SELECT id, owner, sp_state, seeders, leechers, UNIX_TIMESTAMP(added) AS ts, banned FROM torrents WHERE " . hash_where("info_hash", $info_hash);
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if (!$torrent = $Cache->get_value('torrent_hash_'.$info_hash.'_content')){
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$res = sql_query($checkTorrentSql);
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$torrent = mysql_fetch_array($res);
$Cache->cache_value('torrent_hash_'.$info_hash.'_content', $torrent, 350);
}
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if (!$torrent) {
do_log("[TORRENT NOT EXISTS] $checkTorrentSql");
err("torrent not registered with this tracker");
}
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elseif ($torrent['banned'] == 'yes' && $az['class'] < $seebanned_class) err("torrent banned");
// select peers info from peers table for this torrent
$torrentid = $torrent["id"];
$numpeers = $torrent["seeders"]+$torrent["leechers"];
if ($seeder == 'yes'){ //Don't report seeds to other seeders
$only_leech_query = " AND seeder = 'no' ";
$newnumpeers = $torrent["leechers"];
}
else{
$only_leech_query = "";
$newnumpeers = $numpeers;
}
if ($newnumpeers > $rsize)
$limit = " ORDER BY RAND() LIMIT $rsize";
else $limit = "";
$announce_wait = 30;
$fields = "seeder, peer_id, ip, port, uploaded, downloaded, (".TIMENOW." - UNIX_TIMESTAMP(last_action)) AS announcetime, UNIX_TIMESTAMP(prev_action) AS prevts";
$peerlistsql = "SELECT ".$fields." FROM peers WHERE torrent = ".$torrentid." AND connectable = 'yes' ".$only_leech_query.$limit;
$res = sql_query($peerlistsql);
$real_annnounce_interval = $announce_interval;
if ($anninterthreeage && ($anninterthree > $announce_wait) && (TIMENOW - $torrent['ts']) >= ($anninterthreeage * 86400))
$real_annnounce_interval = $anninterthree;
elseif ($annintertwoage && ($annintertwo > $announce_wait) && (TIMENOW - $torrent['ts']) >= ($annintertwoage * 86400))
$real_annnounce_interval = $annintertwo;
$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");
$peer_list = "";
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$peer6_list = "";
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unset($self);
// bencoding the peers info get for this announce
while ($row = mysql_fetch_assoc($res))
{
$row["peer_id"] = hash_pad($row["peer_id"]);
// $peer_id is the announcer's peer_id while $row["peer_id"] is randomly selected from the peers table
if ($row["peer_id"] === $peer_id)
{
$self = $row;
continue;
}
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if ($compact == 1){
$longip = ip2long($row['ip']);
if ($longip) //Ignore ipv6 address
$peer_list .= pack("Nn", sprintf("%d",$longip), $row['port']);
else
{
$ipv6_packed = inet_pton($row['ip']);
if ($ipv6_packed)
$peer6_list .= $ipv6_packed . pack("n", $row['port']);
}
}
elseif ($no_peer_id == 1)
$peer_list .= "d" .
benc_str("ip") . benc_str($row["ip"]) .
benc_str("port") . "i" . $row["port"] . "e" .
"e";
else
$peer_list .= "d" .
benc_str("ip") . benc_str($row["ip"]) .
benc_str("peer id") . benc_str($row["peer_id"]) .
benc_str("port") . "i" . $row["port"] . "e" .
"e";
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}
if ($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";
if ($compact == 1 && strlen($peer6_list) > 0)
{
$resp .= benc_str("peers6").benc_str($peer6_list);
}
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$resp .= "e";
$selfwhere = "torrent = $torrentid AND " . hash_where("peer_id", $peer_id);
//no found in the above random selection
if (!isset($self))
{
$res = sql_query("SELECT $fields FROM peers WHERE $selfwhere LIMIT 1");
$row = mysql_fetch_assoc($res);
if ($row)
{
$self = $row;
}
}
// min announce time
if(isset($self) && $self['prevts'] > (TIMENOW - $announce_wait))
err('There is a minimum announce time of ' . $announce_wait . ' seconds');
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$examIndexData = [];
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// current peer_id, or you could say session with tracker not found in table peers
if (!isset($self))
{
$valid = @mysql_fetch_row(@sql_query("SELECT COUNT(*) FROM peers WHERE torrent=$torrentid AND userid=" . sqlesc($userid)));
if ($valid[0] >= 1 && $seeder == 'no') err("You already are downloading the same torrent. You may only leech from one location at a time.");
if ($valid[0] >= 3 && $seeder == 'yes') err("You cannot seed the same torrent from more than 3 locations.");
if ($az["enabled"] == "no")
err("Your account is disabled!");
elseif ($az["parked"] == "yes")
err("Your account is parked! (Read the FAQ)");
elseif ($az["downloadpos"] == "no")
err("Your downloading priviledges have been disabled! (Read the rules)");
if ($az["class"] < UC_VIP)
{
$ratio = (($az["downloaded"] > 0) ? ($az["uploaded"] / $az["downloaded"]) : 1);
$gigs = $az["downloaded"] / (1024*1024*1024);
if ($waitsystem == "yes")
{
if($gigs > 10)
{
$elapsed = strtotime(date("Y-m-d H:i:s")) - $torrent["ts"];
if ($ratio < 0.4) $wait = 24;
elseif ($ratio < 0.5) $wait = 12;
elseif ($ratio < 0.6) $wait = 6;
elseif ($ratio < 0.8) $wait = 3;
else $wait = 0;
if ($elapsed < $wait)
err("Your ratio is too low! You need to wait " . mkprettytime($wait * 3600 - $elapsed) . " to start, please read $BASEURL/faq.php#id46 for details");
}
}
if ($maxdlsystem == "yes")
{
if($gigs > 10)
if ($ratio < 0.5) $max = 1;
elseif ($ratio < 0.65) $max = 2;
elseif ($ratio < 0.8) $max = 3;
elseif ($ratio < 0.95) $max = 4;
else $max = 0;
if ($max > 0)
{
$res = sql_query("SELECT COUNT(*) AS num FROM peers WHERE userid='$userid' AND seeder='no'") or err("Tracker error 5");
$row = mysql_fetch_assoc($res);
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");
}
}
}
}
else // continue an existing session
{
$upthis = $trueupthis = max(0, $uploaded - $self["uploaded"]);
$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 ($cheaterdet_security){
if ($az['class'] < $nodetect_security && $self['announcetime'] > 10)
{
$is_cheater = check_cheater($userid, $torrent['id'], $upthis, $downthis, $self['announcetime'], $torrent['seeders'], $torrent['leechers']);
}
}
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do_log("upthis: $upthis, downthis: $downthis, announcetime: $announcetime, is_cheater: $is_cheater");
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if (!$is_cheater) {
$examIndexData[\App\Models\Exam::INDEX_SEED_TIME_AVERAGE] = $self['announcetime'];
}
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if (!$is_cheater && ($trueupthis > 0 || $truedownthis > 0))
{
$global_promotion_state = get_global_sp_state();
if($global_promotion_state == 1)// Normal, see individual torrent
{
if($torrent['sp_state']==3) //2X
{
$USERUPDATESET[] = "uploaded = uploaded + 2*$trueupthis";
$USERUPDATESET[] = "downloaded = downloaded + $truedownthis";
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$examIndexData[\App\Models\Exam::INDEX_UPLOADED] = 2 * $trueupthis;
$examIndexData[\App\Models\Exam::INDEX_DOWNLOADED] = $truedownthis;
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}
elseif($torrent['sp_state']==4) //2X Free
{
$USERUPDATESET[] = "uploaded = uploaded + 2*$trueupthis";
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$examIndexData[\App\Models\Exam::INDEX_UPLOADED] = 2 * $trueupthis;
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}
elseif($torrent['sp_state']==6) //2X 50%
{
$USERUPDATESET[] = "uploaded = uploaded + 2*$trueupthis";
$USERUPDATESET[] = "downloaded = downloaded + $truedownthis/2";
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$examIndexData[\App\Models\Exam::INDEX_UPLOADED] = 2 * $trueupthis;
$examIndexData[\App\Models\Exam::INDEX_DOWNLOADED] = $truedownthis / 2;
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}
else{
if ($torrent['owner'] == $userid && $uploaderdouble_torrent > 0)
$upthis = $trueupthis * $uploaderdouble_torrent;
if($torrent['sp_state']==2) //Free
{
$USERUPDATESET[] = "uploaded = uploaded + $upthis";
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$examIndexData[\App\Models\Exam::INDEX_UPLOADED] = $upthis;
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}
elseif($torrent['sp_state']==5) //50%
{
$USERUPDATESET[] = "uploaded = uploaded + $upthis";
$USERUPDATESET[] = "downloaded = downloaded + $truedownthis/2";
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$examIndexData[\App\Models\Exam::INDEX_UPLOADED] = $upthis;
$examIndexData[\App\Models\Exam::INDEX_DOWNLOADED] = $truedownthis / 2;
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}
elseif($torrent['sp_state']==7) //30%
{
$USERUPDATESET[] = "uploaded = uploaded + $upthis";
$USERUPDATESET[] = "downloaded = downloaded + $truedownthis*3/10";
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$examIndexData[\App\Models\Exam::INDEX_UPLOADED] = $upthis;
$examIndexData[\App\Models\Exam::INDEX_DOWNLOADED] = $truedownthis * 3 / 10;
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}
elseif($torrent['sp_state']==1) //Normal
{
$USERUPDATESET[] = "uploaded = uploaded + $upthis";
$USERUPDATESET[] = "downloaded = downloaded + $truedownthis";
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$examIndexData[\App\Models\Exam::INDEX_UPLOADED] = $upthis;
$examIndexData[\App\Models\Exam::INDEX_DOWNLOADED] = $truedownthis;
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}
}
}
elseif($global_promotion_state == 2) //Free
{
if ($torrent['owner'] == $userid && $uploaderdouble_torrent > 0)
$upthis = $trueupthis * $uploaderdouble_torrent;
$USERUPDATESET[] = "uploaded = uploaded + $upthis";
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$examIndexData[\App\Models\Exam::INDEX_UPLOADED] = $upthis;
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}
elseif($global_promotion_state == 3) //2X
{
if ($uploaderdouble_torrent > 2 && $torrent['owner'] == $userid && $uploaderdouble_torrent > 0)
$upthis = $trueupthis * $uploaderdouble_torrent;
else $upthis = 2*$trueupthis;
$USERUPDATESET[] = "uploaded = uploaded + $upthis";
$USERUPDATESET[] = "downloaded = downloaded + $truedownthis";
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$examIndexData[\App\Models\Exam::INDEX_UPLOADED] = $upthis;
$examIndexData[\App\Models\Exam::INDEX_DOWNLOADED] = $truedownthis;
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}
elseif($global_promotion_state == 4) //2X Free
{
if ($uploaderdouble_torrent > 2 && $torrent['owner'] == $userid && $uploaderdouble_torrent > 0)
$upthis = $trueupthis * $uploaderdouble_torrent;
else $upthis = 2*$trueupthis;
$USERUPDATESET[] = "uploaded = uploaded + $upthis";
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$examIndexData[\App\Models\Exam::INDEX_UPLOADED] = $upthis;
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}
elseif($global_promotion_state == 5){ // 50%
if ($torrent['owner'] == $userid && $uploaderdouble_torrent > 0)
$upthis = $trueupthis * $uploaderdouble_torrent;
$USERUPDATESET[] = "uploaded = uploaded + $upthis";
$USERUPDATESET[] = "downloaded = downloaded + $truedownthis/2";
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$examIndexData[\App\Models\Exam::INDEX_UPLOADED] = $upthis;
$examIndexData[\App\Models\Exam::INDEX_DOWNLOADED] = $truedownthis / 2;
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}
elseif($global_promotion_state == 6){ //2X 50%
if ($uploaderdouble_torrent > 2 && $torrent['owner'] == $userid && $uploaderdouble_torrent > 0)
$upthis = $trueupthis * $uploaderdouble_torrent;
else $upthis = 2*$trueupthis;
$USERUPDATESET[] = "uploaded = uploaded + $upthis";
$USERUPDATESET[] = "downloaded = downloaded + $truedownthis/2";
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$examIndexData[\App\Models\Exam::INDEX_UPLOADED] = $upthis;
$examIndexData[\App\Models\Exam::INDEX_DOWNLOADED] = $truedownthis / 2;
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}
elseif($global_promotion_state == 7){ //30%
if ($torrent['owner'] == $userid && $uploaderdouble_torrent > 0)
$upthis = $trueupthis * $uploaderdouble_torrent;
$USERUPDATESET[] = "uploaded = uploaded + $upthis";
$USERUPDATESET[] = "downloaded = downloaded + $truedownthis*3/10";
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$examIndexData[\App\Models\Exam::INDEX_UPLOADED] = $upthis;
$examIndexData[\App\Models\Exam::INDEX_DOWNLOADED] = $truedownthis * 3 / 10;
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}
}
}
$dt = sqlesc(date("Y-m-d H:i:s"));
$updateset = array();
// set non-type event
if (!isset($event))
$event = "";
if (isset($self) && $event == "stopped")
{
sql_query("DELETE FROM peers WHERE $selfwhere") or err("D Err");
if (mysql_affected_rows())
{
$updateset[] = ($self["seeder"] == "yes" ? "seeders = seeders - 1" : "leechers = leechers - 1");
sql_query("UPDATE snatched SET uploaded = uploaded + $trueupthis, downloaded = downloaded + $truedownthis, to_go = $left, $announcetime, last_action = ".$dt." WHERE torrentid = $torrentid AND userid = $userid") or err("SL Err 1");
}
}
elseif(isset($self))
{
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$finished = $finished_snatched = '';
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if ($event == "completed")
{
//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'";
$updateset[] = "times_completed = times_completed + 1";
}
sql_query("UPDATE peers SET ip = ".sqlesc($ip).", port = $port, uploaded = $uploaded, downloaded = $downloaded, to_go = $left, prev_action = last_action, last_action = $dt, seeder = '$seeder', agent = ".sqlesc($agent)." $finished WHERE $selfwhere") or err("PL Err 1");
if (mysql_affected_rows())
{
if ($seeder <> $self["seeder"])
$updateset[] = ($seeder == "yes" ? "seeders = seeders + 1, leechers = leechers - 1" : "seeders = seeders - 1, leechers = leechers + 1");
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 = $userid") or err("SL Err 2");
}
}
else
{
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if (strlen($ip) > 15) {
$sockres = @pfsockopen("tcp://[".$ip."]",$port,$errno,$errstr,5);
} else {
$sockres = @pfsockopen($ip, $port, $errno, $errstr, 5);
}
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if (!$sockres)
{
$connectable = "no";
}
else
{
$connectable = "yes";
@fclose($sockres);
}
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");
if (mysql_affected_rows())
{
$updateset[] = ($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 = $userid"));
if (!$check['0'])
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");
else
sql_query("UPDATE snatched SET to_go = $left, last_action = ".$dt ." WHERE torrentid = $torrentid AND userid = $userid") or err("SL Err 3.1");
}
}
if (count($updateset)) // Update only when there is change in peer counts
{
$updateset[] = "visible = 'yes'";
$updateset[] = "last_action = $dt";
sql_query("UPDATE torrents SET " . join(",", $updateset) . " WHERE id = $torrentid");
}
if($client_familyid != 0 && $client_familyid != $az['clientselect'])
$USERUPDATESET[] = "clientselect = ".sqlesc($client_familyid);
if(count($USERUPDATESET) && $userid)
{
sql_query("UPDATE users SET " . join(",", $USERUPDATESET) . " WHERE id = ".$userid);
}
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$examRep = new \App\Repositories\ExamRepository();
try {
$examRep->addProgress($userid, $torrentid, $examIndexData);
} catch (\Exception $exception) {
do_log("add exam progress fail: " . $exception->getMessage());
}
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benc_resp_raw($resp);
?>