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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 (!isset($_FILES['file'])) {
json_response(null, "No 'file' specified!", 400);
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 {
$file = $_FILES['file'];
if (
!isset($file['error']) ||
is_array($file['error'])
) {
throw new RuntimeException('Invalid parameters.');
}
// checking file size
switch ($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.");
}
$file_id = generate_random_char_sequence(FILE_ID_CHARACTERS, FILE_ID_LENGTH);
if (!move_uploaded_file($file['tmp_name'], FILE_DIRECTORY . sprintf('/%s.%s', $file_id, $file_ext))) {
throw new RuntimeException("Failed to save the file. Try again later.");
}
json_response([
'id' => $file_id,
'extension' => $file_ext,
'mime' => FILE_ACCEPTED_MIME_TYPES[$file_ext],
'size' => $file['size']
], null, 201);
} catch (RuntimeException $e) {
json_response(null, $e->getMessage(), 400);
}
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