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<?php
include_once $_SERVER['DOCUMENT_ROOT'] . '/../config.php';
include_once $_SERVER['DOCUMENT_ROOT'] . '/../lib/utils.php';
include_once $_SERVER['DOCUMENT_ROOT'] . '/../lib/thumbnails.php';
include_once $_SERVER['DOCUMENT_ROOT'] . '/../lib/file.php';
include_once $_SERVER['DOCUMENT_ROOT'] . '/../lib/alert.php';
if ($_SERVER['REQUEST_METHOD'] != 'POST') {
generate_alert(
'/',
"Method not allowed",
405,
null
);
exit;
}
if (!is_dir(FILE_UPLOAD_DIRECTORY) && !mkdir(FILE_UPLOAD_DIRECTORY, 0777, true)) {
generate_alert(
'/',
"Failed to create a directory for user files",
500,
null
);
exit();
}
try {
$preserve_original_name = boolval($_POST['preserve_original_name'] ?? '0');
$title = str_safe($_POST['title'] ?? '', FILE_TITLE_MAX_LENGTH);
if (empty(trim($title))) {
$title = null;
}
$url = isset($_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.");
}
// verifying file mimetype
$file_mime = FILE_ACCEPTED_MIME_TYPES[$file_ext];
$is_media = str_starts_with($file_mime, 'image/') || str_starts_with($file_mime, 'video/') || str_starts_with($file_mime, 'audio/');
if (FILE_VERIFY_MIMETYPE && $is_media && !verify_mimetype($file['tmp_name'], $file_mime)) {
throw new RuntimeException('Invalid file format.');
}
// striping exif data
if (FILE_STRIP_EXIF && $is_media && !strip_exif($file['tmp_name'])) {
throw new RuntimeException('Failed to strip EXIF tags.');
}
$file_data = [
'size' => $file['size'],
'mime' => $file_mime,
'extension' => $file_ext
];
}
if (!$file_data) {
throw new RuntimeException('No URL or file specified');
}
$file_id_length = FILE_ID_LENGTH;
$file_id_gen_attempts = 0;
do {
$file_id = FILE_ID_PREFIX . generate_random_char_sequence(FILE_ID_CHARACTERS, $file_id_length);
if ($file_id_gen_attempts > 20) {
$file_id_length++;
$file_id_gen_attempts = 0;
}
$file_id_gen_attempts++;
} while (is_file(FILE_UPLOAD_DIRECTORY . "/{$file_id}.{$file_data['extension']}"));
$file_data['id'] = $file_id;
if (isset($url)) {
$result = 0;
$output = [];
$file_path = FILE_UPLOAD_DIRECTORY . "/$file_id.{$file_data['extension']}";
exec(sprintf(
'yt-dlp -f "worst" -o "%s" %s 2>&1',
$file_path,
escapeshellarg($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.');
}
// verifying file mime type
$file_mime = $file_data['mime'];
$is_media = str_starts_with($file_mime, 'image/') || str_starts_with($file_mime, 'video/') || str_starts_with($file_mime, 'audio/');
if (FILE_VERIFY_MIMETYPE && $is_media && !verify_mimetype($file_path, $file_mime)) {
delete_file($file_id, $file_data['extension']);
throw new RuntimeException('Invalid file format.');
}
} else if (isset($paste) && !file_put_contents(FILE_UPLOAD_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_UPLOAD_DIRECTORY . sprintf('/%s.%s', $file_id, $file_data['extension']))) {
throw new RuntimeException("Failed to save the file. Try again later.");
}
if (FILE_THUMBNAILS && !is_dir(FILE_THUMBNAIL_DIRECTORY) && !mkdir(FILE_THUMBNAIL_DIRECTORY, 0777, true)) {
throw new RuntimeException('Failed to create a directory for thumbnails');
}
if (
FILE_THUMBNAILS && (
(
str_starts_with($file_data['mime'], 'image/') &&
$thumbnail_error = generate_image_thumbnail(
FILE_UPLOAD_DIRECTORY . "/{$file_id}.{$file_data['extension']}",
FILE_THUMBNAIL_DIRECTORY . "/{$file_id}.webp",
FILE_THUMBNAIL_SIZE[0],
FILE_THUMBNAIL_SIZE[1]
)
) ||
(
str_starts_with($file_data['mime'], 'video/') &&
$thumbnail_error = generate_video_thumbnail(
FILE_UPLOAD_DIRECTORY . "/{$file_id}.{$file_data['extension']}",
FILE_THUMBNAIL_DIRECTORY . "/{$file_id}",
FILE_THUMBNAIL_DIRECTORY . "/{$file_id}.webp",
FILE_THUMBNAIL_SIZE[0],
FILE_THUMBNAIL_SIZE[1]
)
)
)
) {
throw new RuntimeException("Failed to create a thumbnail (Error code {$thumbnail_error})");
}
$file_data['urls'] = [
'download_url' => INSTANCE_URL . "/{$file_data['id']}.{$file_data['extension']}"
];
if (FILE_METADATA && FILE_DELETION) {
$file_data['password'] = $_POST['password'] ?? generate_random_char_sequence(FILE_ID_CHARACTERS, FILE_DELETION_KEY_LENGTH);
$file_data['urls']['deletion_url'] = INSTANCE_URL . "/delete.php?f={$file_data['id']}.{$file_data['extension']}&key={$file_data['password']}";
}
generate_alert(
"/{$file_data['id']}.{$file_data['extension']}",
null,
201,
$file_data
);
if (FILE_METADATA) {
unset($file_data['urls']);
$file_data['password'] = password_hash($file_data['password'], PASSWORD_DEFAULT);
$file_data['views'] = 0;
$file_data['uploaded_at'] = time();
if ($title) {
$file_data['original_name'] = $title;
}
if ($preserve_original_name && !$title) {
if ($file && !empty($file['name'])) {
$file_data['original_name'] = $file['name'];
} else if ($url) {
$file_data['original_name'] = $url;
}
}
if (!is_dir(FILE_METADATA_DIRECTORY) && !mkdir(FILE_METADATA_DIRECTORY, 0777, true)) {
throw new RuntimeException('Failed to create a folder for file metadata');
}
if (!file_put_contents(FILE_METADATA_DIRECTORY . "/{$file_data['id']}.metadata.json", json_encode($file_data, JSON_UNESCAPED_SLASHES))) {
throw new RuntimeException('Failed to create a file metadata');
}
}
} catch (RuntimeException $e) {
generate_alert(
"/",
$e->getMessage(),
400
);
}
|
