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<?php
if (isset($_GET['q'])) {
$query = strtolower(substr($_GET['q'], 0, 200));
$query = preg_replace("/[^A-Za-z0-9 ]/", '', preg_replace("/[\.]/", ' ', $query));
} else {
header("Location: /");
die();
}
$addr = sha1($_SERVER['REMOTE_ADDR']);
$cacheOnly = false;
$rl = [
"local" => -1,
"global" => -1,
"blocked" => false
];
if (!file_exists($_SERVER['DOCUMENT_ROOT'] . "/private/ratelimiting/" . $addr)) {
file_put_contents($_SERVER['DOCUMENT_ROOT'] . "/private/ratelimiting/" . $addr, "1|" . date('YmdHi'));
} else {
$requests = (int)explode("|", file_get_contents($_SERVER['DOCUMENT_ROOT'] . "/private/ratelimiting/" . $addr))[0];
$date = explode("|", file_get_contents($_SERVER['DOCUMENT_ROOT'] . "/private/ratelimiting/" . $addr))[1];
if ($date === date('YmdHi')) {
$requests++;
if ($requests > 3) {
$cacheOnly = true;
$rl["blocked"] = true;
}
file_put_contents($_SERVER['DOCUMENT_ROOT'] . "/private/ratelimiting/" . $addr, $requests . "|" . date('YmdHi'));
} else {
file_put_contents($_SERVER['DOCUMENT_ROOT'] . "/private/ratelimiting/" . $addr, "1|" . date('YmdHi'));
}
$rl["local"] = $requests;
}
if (!file_exists($_SERVER['DOCUMENT_ROOT'] . "/private/ratelimiting/_global")) {
file_put_contents($_SERVER['DOCUMENT_ROOT'] . "/private/ratelimiting/_global", "1|" . date('YmdHi'));
} else {
$requests = (int)explode("|", file_get_contents($_SERVER['DOCUMENT_ROOT'] . "/private/ratelimiting/_global"))[0];
$date = explode("|", file_get_contents($_SERVER['DOCUMENT_ROOT'] . "/private/ratelimiting/_global"))[1];
if ($date === date('YmdHi')) {
$requests++;
if ($requests >= 20) {
$cacheOnly = true;
$rl["blocked"] = true;
}
file_put_contents($_SERVER['DOCUMENT_ROOT'] . "/private/ratelimiting/_global", $requests . "|" . date('YmdHi'));
} else {
file_put_contents($_SERVER['DOCUMENT_ROOT'] . "/private/ratelimiting/_global", "1|" . date('YmdHi'));
}
$rl["global"] = $requests;
}
header("Content-Type: application/json");
if (file_exists($_SERVER["DOCUMENT_ROOT"] . "/private/instants/" . str_replace(" ", "_", $query))) {
$ds = "local";
$data = file_get_contents($_SERVER["DOCUMENT_ROOT"] . "/private/instants/" . str_replace(" ", "_", $query));
} else if (file_exists($_SERVER["DOCUMENT_ROOT"] . "/private/cache/instant_" . str_replace(" ", "_", $query))) {
$ds = "cache";
$data = file_get_contents($_SERVER["DOCUMENT_ROOT"] . "/private/cache/instant_" . str_replace(" ", "_", $query));
} else {
if ($cacheOnly) {
die();
} else {
$ds = "online";
$data = file_get_contents("https://api.duckduckgo.com/?q=" . $query . "&format=json&pretty=1&t=Minteck-WolfEye_https://minteck.org&skip_disambig=1&no_redirect=1&no_html=1");
file_put_contents($_SERVER["DOCUMENT_ROOT"] . "/private/cache/instant_" . str_replace(" ", "_", $query), $data);
}
}
$parsed = json_decode($data, true);
$parsed = array_reverse($parsed);
$parsed["_WolfEye_DataSource"] = $ds;
$parsed["_WolfEye_RateLimiting"] = $rl;
$parsed["_WolfEye_External"] = $ds !== "local";
$parsed = array_reverse($parsed);
die(json_encode($parsed, JSON_PRETTY_PRINT));
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