added nextcloud

nextcloud/helpers.ts

@@ -0,0 +1,45 @@
+import { Request } from "express";
+import { WebDAVClient } from "webdav";
+import { DIRS } from "./server";
+
+
+export async function statOne(fpath: string, client: WebDAVClient) {
+	const parent = fpath.replace(/\/[^/]+$/, '') || '/',
+		base = fpath.split('/').filter(Boolean).pop(),
+		list = await client.getDirectoryContents(parent, { deep: false }),
+		entry = Array.isArray(list) ? list.find((e: any) => e.basename === base) : undefined;
+
+	if (!entry) throw `not found: ${fpath}`;
+	return { etag: entry.etag as string, size: Number(entry.size), mime: entry.mime as string | undefined };
+}
+
+export const toRegExp = (spec: string): RegExp | null => {
+	// slash-delimited form: /pattern/flags
+	const m = spec.match(/^\/(.+)\/([a-z]*)$/i);
+	try {
+		if (m) {
+			const [, source, flags] = m;
+			return new RegExp(source, flags);
+		}
+
+		// raw pattern form: "pattern"
+		return new RegExp(spec);
+	} catch {
+		return null;
+	}
+}
+
+export function checkIfHasPerms(req: Request) {
+	if (!req.body) {
+		return false;
+	}
+	const { fpath, obj_type, deep, usecache } = req.body,
+		o = { fpath, obj_type, deep, usecache };
+
+	if (!fpath) return false;
+	if (!DIRS) return o;
+	if (fpath.includes('..')) return false;
+
+	return DIRS.find(r => fpath.match(r)) ? o : false;
+}
+