Merge remote branch 'upstream/jetty'

src/main/java/org/dynmap/servlet/ClientUpdateServlet.java

@@ -0,0 +1,74 @@
+package org.dynmap.servlet;
+
+import static org.dynmap.JSONUtils.s;
+
+import java.io.IOException;
+import java.util.Date;
+import java.util.regex.Matcher;
+import java.util.regex.Pattern;
+
+import javax.servlet.ServletException;
+import javax.servlet.http.HttpServlet;
+import javax.servlet.http.HttpServletRequest;
+import javax.servlet.http.HttpServletResponse;
+
+import org.dynmap.ClientUpdateEvent;
+import org.dynmap.DynmapPlugin;
+import org.dynmap.DynmapWorld;
+import org.dynmap.Log;
+import org.dynmap.web.HttpField;
+import org.json.simple.JSONObject;
+
+public class ClientUpdateServlet extends HttpServlet {
+    private DynmapPlugin plugin;
+    
+    public ClientUpdateServlet(DynmapPlugin plugin) {
+        this.plugin = plugin;
+    }
+
+    Pattern updatePathPattern = Pattern.compile("/([^/]+)/([0-9]*)");
+    @Override
+    protected void doGet(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {
+        String path = req.getPathInfo();
+        Matcher match = updatePathPattern.matcher(path);
+        
+        if (!match.matches()) {
+            resp.sendError(404, "World not found");
+            return;
+        }
+        
+        String worldName = match.group(1);
+        String timeKey = match.group(2);
+        
+        DynmapWorld dynmapWorld = null;
+        if(plugin.mapManager != null) {
+            dynmapWorld = plugin.mapManager.getWorld(worldName);
+        }
+        if (dynmapWorld == null || !dynmapWorld.isLoaded()) {
+            resp.sendError(404, "World not found");
+            return;
+        }
+        long current = System.currentTimeMillis();
+        long since = 0;
+
+        try {
+            since = Long.parseLong(timeKey);
+        } catch (NumberFormatException e) {
+        }
+
+        JSONObject u = new JSONObject();
+        s(u, "timestamp", current);
+        plugin.events.trigger("buildclientupdate", new ClientUpdateEvent(since, dynmapWorld, u));
+
+        byte[] bytes = u.toJSONString().getBytes("UTF-8");
+
+        String dateStr = new Date().toString();
+        resp.addHeader(HttpField.Date, dateStr);
+        resp.addHeader(HttpField.ContentType, "text/plain; charset=utf-8");
+        resp.addHeader(HttpField.Expires, "Thu, 01 Dec 1994 16:00:00 GMT");
+        resp.addHeader(HttpField.LastModified, dateStr);
+        resp.addHeader(HttpField.ContentLength, Integer.toString(bytes.length));
+
+        resp.getOutputStream().write(bytes);
+    }
+}