Initial push

app/api/files/upload/route.ts

@@ -0,0 +1,71 @@
+import { NextRequest, NextResponse } from "next/server";
+import { auth } from "@/lib/auth";
+import { checkRateLimit, getClientIp } from "@/lib/security/rateLimit";
+import { sanitizeFilePath } from "@/lib/security/sanitize";
+import { db } from "@/lib/db";
+import { auditLogs } from "@/lib/db/schema";
+import { nanoid } from "nanoid";
+import * as fs from "node:fs";
+import * as path from "node:path";
+
+const MAX_FILE_SIZE = 500 * 1024 * 1024; // 500 MB
+const BLOCKED_EXTENSIONS = new Set([".exe", ".bat", ".cmd", ".sh", ".ps1"]);
+
+export async function POST(req: NextRequest) {
+  const session = await auth.api.getSession({ headers: req.headers });
+  if (!session) return NextResponse.json({ error: "Unauthorized" }, { status: 401 });
+  if (!["superadmin", "admin"].includes(session.user.role ?? "")) {
+    return NextResponse.json({ error: "Forbidden" }, { status: 403 });
+  }
+
+  const ip = getClientIp(req);
+  const { allowed } = checkRateLimit(ip, 20);
+  if (!allowed) return NextResponse.json({ error: "Too many requests" }, { status: 429 });
+
+  const mcBase = path.resolve(process.env.MC_SERVER_PATH ?? "/opt/minecraft/server");
+  const targetDir = req.nextUrl.searchParams.get("path") ?? "/";
+
+  let resolvedDir: string;
+  try {
+    resolvedDir = sanitizeFilePath(targetDir, mcBase);
+  } catch {
+    return NextResponse.json({ error: "Invalid path" }, { status: 400 });
+  }
+
+  const formData = await req.formData();
+  const file = formData.get("file") as File | null;
+
+  if (!file) return NextResponse.json({ error: "No file provided" }, { status: 400 });
+
+  // Check file size
+  if (file.size > MAX_FILE_SIZE) {
+    return NextResponse.json({ error: "File too large (max 500 MB)" }, { status: 413 });
+  }
+
+  // Check extension
+  const ext = path.extname(file.name).toLowerCase();
+  if (BLOCKED_EXTENSIONS.has(ext)) {
+    return NextResponse.json({ error: "File type not allowed" }, { status: 400 });
+  }
+
+  // Sanitize filename: allow alphanumeric, dots, dashes, underscores, spaces
+  const safeName = file.name.replace(/[^a-zA-Z0-9._\- ]/g, "_");
+  const destPath = path.join(resolvedDir, safeName);
+
+  // Ensure destination is still within base
+  if (!destPath.startsWith(mcBase)) {
+    return NextResponse.json({ error: "Invalid destination" }, { status: 400 });
+  }
+
+  const buffer = Buffer.from(await file.arrayBuffer());
+  fs.mkdirSync(resolvedDir, { recursive: true });
+  fs.writeFileSync(destPath, buffer);
+
+  await db.insert(auditLogs).values({
+    id: nanoid(), userId: session.user.id,
+    action: "file.upload", target: "file", targetId: path.relative(mcBase, destPath),
+    details: JSON.stringify({ size: file.size, name: safeName }), ipAddress: ip, createdAt: Date.now(),
+  });
+
+  return NextResponse.json({ success: true, path: path.relative(mcBase, destPath) });
+}