function antiConcurrency(ISblamPost $p)
{
return;
// slows down server under heavy load :(
$ip = $p->getAuthorIP();
if (!apc_add('ip.lock:' . $ip, 1, 2) && apc_fetch('ip-ban:' . $ip) < time()) {
$wait = 500000 + 100000 * (mt_rand() % 10);
usleep($wait);
$this->waittime += $wait;
d("*Throttled*");
}
}
function testPost(ISblamPost $p)
{
if (!$this->checksum) {
return;
}
$res = $this->db->query(sprintf("/*maxtime5*/SELECT count,ip FROM dupes WHERE checksum = UNHEX('%s') LIMIT 1", $this->checksum));
if ($res) {
$res = $res->fetchAll();
} else {
return NULL;
}
if (count($res)) {
$res = $res[0];
$allowed = 2;
// double-posting?
if (false !== strpos($p->getPath(), 'editpost')) {
$allowed++;
}
$score = ($res['count'] - $allowed) / 15;
$cert = self::CERTAINITY_LOW;
if ($res['count'] > 35) {
$score += 2;
$cert = self::CERTAINITY_HIGH;
} elseif ($res['count'] > 20) {
$score += 0.8;
$cert = self::CERTAINITY_HIGH;
} elseif ($res['count'] > 10) {
$score += 0.4;
$cert = self::CERTAINITY_HIGH;
} elseif ($res['count'] > 5) {
$score += 0.2;
$cert = self::CERTAINITY_NORMAL;
}
$ip = long2ip($res['ip']);
if ($ip != $p->getAuthorIP()) {
$score = ($score + 0.3) * 1.2;
}
// different IP? botnet!
if ($this->length > 250) {
$score = ($score + 0.1) * 1.5;
}
// less likely to accidentally dupe
if ($score > 0.1) {
$score = min($score, 2) + min($score / 5, 4);
return array($score, $cert, "Duplicate (x" . round($res['count']) . " = " . round($score, 1) . ")");
}
}
}
