mirror of
https://github.com/openvk/openvk
synced 2024-12-23 00:51:03 +03:00
321 lines
12 KiB
PHP
321 lines
12 KiB
PHP
<?php declare(strict_types=1);
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namespace openvk\Web\Presenters;
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use Chandler\Security\Authenticator;
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use Chandler\Database\DatabaseConnection as DB;
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use openvk\VKAPI\Exceptions\APIErrorException;
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use openvk\Web\Models\Entities\{User, APIToken};
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use openvk\Web\Models\Repositories\{Users, APITokens};
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use lfkeitel\phptotp\{Base32, Totp};
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use WhichBrowser;
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final class VKAPIPresenter extends OpenVKPresenter
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{
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private function logRequest(string $object, string $method): void
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{
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$date = date(DATE_COOKIE);
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$params = json_encode($_REQUEST);
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$log = "[$date] $object.$method called with $params\r\n";
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file_put_contents(OPENVK_ROOT . "/VKAPI/debug.log", $log, FILE_APPEND | LOCK_EX);
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}
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private function fail(int $code, string $message, string $object, string $method): void
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{
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header("HTTP/1.1 400 Bad API Call");
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header("Content-Type: application/json");
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$payload = [
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"error_code" => $code,
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"error_msg" => $message,
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"request_params" => [
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[
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"key" => "method",
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"value" => "$object.$method",
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],
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[
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"key" => "oauth",
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"value" => 1,
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],
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],
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];
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foreach($_GET as $key => $value)
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array_unshift($payload["request_params"], [ "key" => $key, "value" => $value ]);
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exit(json_encode($payload));
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}
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private function twofaFail(int $userId): void
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{
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header("HTTP/1.1 401 Unauthorized");
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header("Content-Type: application/json");
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$payload = [
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"error" => "need_validation",
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"error_description" => "use app code",
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"validation_type" => "2fa_app",
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"validation_sid" => "2fa_".$userId."_2839041_randommessdontread",
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"phone_mask" => "+374 ** *** 420",
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"redirect_url" => "https://http.cat/418", // Not implemented yet :( So there is a photo of cat :3
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"validation_resend" => "nowhere"
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];
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exit(json_encode($payload));
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}
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private function badMethod(string $object, string $method): void
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{
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$this->fail(3, "Unknown method passed.", $object, $method);
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}
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private function badMethodCall(string $object, string $method, string $param): void
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{
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$this->fail(100, "Required parameter '$param' missing.", $object, $method);
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}
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function onStartup(): void
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{
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parent::onStartup();
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# idk, but in case we will ever support non-standard HTTP credential authflow
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$origin = "*";
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if(isset($_SERVER["HTTP_REFERER"])) {
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$refOrigin = parse_url($_SERVER["HTTP_REFERER"], PHP_URL_SCHEME) . "://" . parse_url($_SERVER["HTTP_REFERER"], PHP_URL_HOST);
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if($refOrigin !== false)
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$origin = $refOrigin;
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}
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if(!is_null($this->queryParam("requestPort")))
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$origin .= ":" . ((int) $this->queryParam("requestPort"));
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header("Access-Control-Allow-Origin: $origin");
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if($_SERVER["REQUEST_METHOD"] === "OPTIONS") {
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header("Access-Control-Allow-Methods: POST, PUT, DELETE");
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header("Access-Control-Allow-Headers: " . $_SERVER["HTTP_ACCESS_CONTROL_REQUEST_HEADERS"]);
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header("Access-Control-Max-Age: -1");
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exit; # Terminate request processing as this is definitely a CORS preflight request.
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}
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}
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function renderPhotoUpload(string $signature): void
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{
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$secret = CHANDLER_ROOT_CONF["security"]["secret"];
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$queryString = rawurldecode($_SERVER["QUERY_STRING"]);
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$computedSignature = hash_hmac("sha3-224", $queryString, $secret);
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if(!(strlen($signature) == 56 && sodium_memcmp($signature, $computedSignature) == 0)) {
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header("HTTP/1.1 422 Unprocessable Entity");
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exit("Try harder <3");
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}
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$data = unpack("vDOMAIN/Z10FIELD/vMF/vMP/PTIME/PUSER/PGROUP", base64_decode($queryString));
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if((time() - $data["TIME"]) > 600) {
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header("HTTP/1.1 422 Unprocessable Entity");
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exit("Expired");
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}
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$folder = __DIR__ . "/../../tmp/api-storage/photos";
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$maxSize = OPENVK_ROOT_CONF["openvk"]["preferences"]["uploads"]["api"]["maxFileSize"];
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$maxFiles = OPENVK_ROOT_CONF["openvk"]["preferences"]["uploads"]["api"]["maxFilesPerDomain"];
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$usrFiles = sizeof(glob("$folder/$data[USER]_*.oct"));
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if($usrFiles >= $maxFiles) {
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header("HTTP/1.1 507 Insufficient Storage");
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exit("There are $maxFiles pending already. Please save them before uploading more :3");
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}
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# Not multifile
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if($data["MF"] === 0) {
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$file = $_FILES[$data["FIELD"]];
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if(!$file) {
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header("HTTP/1.0 400");
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exit("No file");
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} else if($file["error"] != UPLOAD_ERR_OK) {
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header("HTTP/1.0 500");
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exit("File could not be consumed");
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} else if($file["size"] > $maxSize) {
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header("HTTP/1.0 507 Insufficient Storage");
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exit("File is too big");
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}
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move_uploaded_file($file["tmp_name"], "$folder/$data[USER]_" . ($usrFiles + 1) . ".oct");
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header("HTTP/1.0 202 Accepted");
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$photo = $data["USER"] . "|" . ($usrFiles + 1) . "|" . $data["GROUP"];
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exit(json_encode([
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"server" => "ephemeral",
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"photo" => $photo,
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"hash" => hash_hmac("sha3-224", $photo, $secret),
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]));
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}
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$files = [];
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for($i = 1; $i <= 5; $i++) {
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$file = $_FILES[$data["FIELD"] . $i] ?? NULL;
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if (!$file || $file["error"] != UPLOAD_ERR_OK || $file["size"] > $maxSize) {
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continue;
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} else if((sizeof($files) + $usrFiles) > $maxFiles) {
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# Clear uploaded files since they can't be saved anyway
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foreach($files as $f)
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unlink($f);
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header("HTTP/1.1 507 Insufficient Storage");
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exit("There are $maxFiles pending already. Please save them before uploading more :3");
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}
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$files[++$usrFiles] = move_uploaded_file($file["tmp_name"], "$folder/$data[USER]_$usrFiles.oct");
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}
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if(sizeof($files) === 0) {
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header("HTTP/1.0 400");
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exit("No file");
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}
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$filesManifest = [];
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foreach($files as $id => $file)
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$filesManifest[] = ["keyholder" => $data["USER"], "resource" => $id, "club" => $data["GROUP"]];
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$filesManifest = json_encode($filesManifest);
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$manifestHash = hash_hmac("sha3-224", $filesManifest, $secret);
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header("HTTP/1.0 202 Accepted");
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exit(json_encode([
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"server" => "ephemeral",
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"photos_list" => $filesManifest,
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"album_id" => "undefined",
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"hash" => $manifestHash,
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]));
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}
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function renderRoute(string $object, string $method): void
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{
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$authMechanism = $this->queryParam("auth_mechanism") ?? "token";
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if($authMechanism === "roaming") {
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if(!$this->user->identity)
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$this->fail(5, "User authorization failed: roaming mechanism is selected, but user is not logged in.", $object, $method);
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else
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$identity = $this->user->identity;
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} else {
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if(is_null($this->requestParam("access_token"))) {
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$identity = NULL;
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} else {
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$token = (new APITokens)->getByCode($this->requestParam("access_token"));
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if(!$token) {
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$identity = NULL;
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} else {
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$identity = $token->getUser();
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$platform = $token->getPlatform();
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}
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}
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}
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if(!is_null($identity) && $identity->isBanned())
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$this->fail(18, "User account is deactivated", $object, $method);
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$object = ucfirst(strtolower($object));
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$handlerClass = "openvk\\VKAPI\\Handlers\\$object";
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if(!class_exists($handlerClass))
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$this->badMethod($object, $method);
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$handler = new $handlerClass($identity, $platform);
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if(!is_callable([$handler, $method]))
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$this->badMethod($object, $method);
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$route = new \ReflectionMethod($handler, $method);
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$params = [];
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foreach($route->getParameters() as $parameter) {
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$val = $this->requestParam($parameter->getName());
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if(is_null($val)) {
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if($parameter->allowsNull())
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$val = NULL;
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else if($parameter->isDefaultValueAvailable())
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$val = $parameter->getDefaultValue();
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else if($parameter->isOptional())
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$val = NULL;
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else
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$this->badMethodCall($object, $method, $parameter->getName());
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}
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try {
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settype($val, $parameter->getType()->getName());
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$params[] = $val;
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} catch (\Throwable $e) {
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// Just ignore the exception, since
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// some args are intended for internal use
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}
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}
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define("VKAPI_DECL_VER", $this->requestParam("v") ?? "4.100", false);
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try {
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$res = $handler->{$method}(...$params);
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} catch(APIErrorException $ex) {
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$this->fail($ex->getCode(), $ex->getMessage(), $object, $method);
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}
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$result = json_encode([
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"response" => $res,
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]);
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$size = strlen($result);
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header("Content-Type: application/json");
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header("Content-Length: $size");
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exit($result);
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}
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function renderTokenLogin(): void
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{
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if($this->requestParam("grant_type") !== "password")
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$this->fail(7, "Invalid grant type", "internal", "acquireToken");
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else if(is_null($this->requestParam("username")) || is_null($this->requestParam("password")))
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$this->fail(100, "Password and username not passed", "internal", "acquireToken");
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$chUser = DB::i()->getContext()->table("ChandlerUsers")->where("login", $this->requestParam("username"))->fetch();
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if(!$chUser)
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$this->fail(28, "Invalid username or password", "internal", "acquireToken");
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$auth = Authenticator::i();
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if(!$auth->verifyCredentials($chUser->id, $this->requestParam("password")))
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$this->fail(28, "Invalid username or password", "internal", "acquireToken");
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$uId = $chUser->related("profiles.user")->fetch()->id;
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$user = (new Users)->get($uId);
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$code = $this->requestParam("code");
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if($user->is2faEnabled() && !($code === (new Totp)->GenerateToken(Base32::decode($user->get2faSecret())) || $user->use2faBackupCode((int) $code))) {
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if($this->requestParam("2fa_supported") == "1")
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$this->twofaFail($user->getId());
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else
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$this->fail(28, "Invalid 2FA code", "internal", "acquireToken");
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}
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$token = NULL;
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$tokenIsStale = true;
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$platform = $this->requestParam("client_name");
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$acceptsStale = $this->requestParam("accepts_stale");
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if($acceptsStale == "1") {
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if(is_null($platform))
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$this->fail(101, "accepts_stale can only be used with explicitly set client_name", "internal", "acquireToken");
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$token = (new APITokens)->getStaleByUser($uId, $platform);
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}
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if(is_null($token)) {
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$tokenIsStale = false;
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$token = new APIToken;
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$token->setUser($user);
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$token->setPlatform($platform ?? (new WhichBrowser\Parser(getallheaders()))->toString());
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$token->save();
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}
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$payload = json_encode([
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"access_token" => $token->getFormattedToken(),
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"expires_in" => 0,
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"user_id" => $uId,
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"is_stale" => $tokenIsStale,
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]);
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$size = strlen($payload);
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header("Content-Type: application/json");
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header("Content-Length: $size");
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exit($payload);
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}
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}
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