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<?php
include_once $_SERVER['DOCUMENT_ROOT'] . '/../config.php';
include_once $_SERVER['DOCUMENT_ROOT'] . '/../lib/utils.php';
if ($_SERVER['REQUEST_METHOD'] != 'POST') {
json_response(null, 'Method not allowed', 405);
exit;
}
if (!is_dir(FILE_DIRECTORY) && !mkdir(FILE_DIRECTORY, 0777, true)) {
json_response(null, 'Failed to create a directory for user files', 500);
exit();
}
try {
$url = isset($_POST['url']) ? $_POST['url'] ?: null : null;
$file = isset($_FILES['file']) ? $_FILES['file'] ?: null : null;
if (empty($file['tmp_name'])) {
$file = null;
}
$paste = isset($_POST['paste']) ? $_POST['paste'] ?: null : null;
$file_data = null;
if (!(isset($file) ^ isset($url) ^ isset($paste)) || (isset($file) && isset($url) && isset($paste))) {
throw new RuntimeException('You can upload only one type of content: file, URL or text');
}
if (FILEEXT_ENABLED && isset($url) && !empty($url)) {
$output = [];
exec('yt-dlp -f "worst" --get-filename -o "%(filesize_approx)s %(ext)s %(duration)s" ' . escapeshellarg($url) . '', $output);
if (empty($output)) {
throw new RuntimeException('Bad URL');
}
$output = explode(' ', $output[0]);
// TODO: some videos don't have duration
$duration = intval($output[2]);
if ($duration > FILEEXT_MAX_DURATION) {
throw new RuntimeException(sprintf("File must be under %d minutes", FILEEXT_MAX_DURATION / 60));
}
if (!array_key_exists($output[1], FILE_ACCEPTED_MIME_TYPES)) {
throw new RuntimeException("Unsupported extension: {$output[1]}");
}
$file_data = [
'size' => intval($output[0]),
'mime' => FILE_ACCEPTED_MIME_TYPES[$output[1]],
'extension' => $output[1]
];
} else if (isset($paste)) {
$file_data = [
'size' => strlen($paste),
'mime' => 'text/plain',
'extension' => 'txt'
];
} else if (isset($file)) {
if (
!isset($file['error']) ||
is_array($file['error'])
) {
throw new RuntimeException('Invalid parameters.');
}
// checking file error
switch ($file['error']) {
case UPLOAD_ERR_OK:
break;
case UPLOAD_ERR_NO_FILE:
throw new RuntimeException('No file sent.');
case UPLOAD_ERR_INI_SIZE:
case UPLOAD_ERR_FORM_SIZE:
throw new RuntimeException('Exceeded filesize limit.');
default:
throw new RuntimeException('Unknown errors.');
}
// checking file mimetype
$finfo = new finfo(FILEINFO_MIME_TYPE);
if (false === $file_ext = array_search($finfo->file($file['tmp_name']), FILE_ACCEPTED_MIME_TYPES, true)) {
throw new RuntimeException("Invalid file format.");
}
$file_data = [
'size' => $file['size'],
'mime' => FILE_ACCEPTED_MIME_TYPES[$file_ext],
'extension' => $file_ext
];
}
if (!$file_data) {
throw new RuntimeException('No URL or file specified');
}
$file_id = generate_random_char_sequence(FILE_ID_CHARACTERS, FILE_ID_LENGTH);
$file_data['id'] = $file_id;
if (isset($url)) {
$result = 0;
$output = [];
exec(sprintf(
'yt-dlp -f "worst" -o "%s/%s.%s" %s 2>&1',
FILE_DIRECTORY,
$file_id,
$file_data['extension'],
escapeshellarg($url)
), $output, $result);
if ($result != 0) {
error_log(sprintf("Failed to download a file (URL: %s): %s", $url, implode('\n', $output)));
throw new RuntimeException('Failed to download a file! Try again later.');
}
} else if (isset($paste) && !file_put_contents(FILE_DIRECTORY . sprintf('/%s.%s', $file_id, $file_data['extension']), $paste)) {
throw new RuntimeException('Failed to paste a text! Try again later.');
} else if (isset($file) && !move_uploaded_file($file['tmp_name'], FILE_DIRECTORY . sprintf('/%s.%s', $file_id, $file_data['extension']))) {
throw new RuntimeException("Failed to save the file. Try again later.");
}
json_response($file_data, null, 201);
} catch (RuntimeException $e) {
json_response(null, $e->getMessage(), 400);
}
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