From de4e52d1004f3a68bd8a863d3a507dc252f20cea Mon Sep 17 00:00:00 2001
From: Vitaly Takmazov
Date: Thu, 7 Jul 2016 15:52:04 +0300
Subject: reorganize project, part 3

---
 .../main/java/com/juick/ws/WebsocketComponent.java | 140 +++++++++++++++++++++
 1 file changed, 140 insertions(+)
 create mode 100644 juick-ws/src/main/java/com/juick/ws/WebsocketComponent.java

(limited to 'juick-ws/src/main/java/com/juick/ws/WebsocketComponent.java')

diff --git a/juick-ws/src/main/java/com/juick/ws/WebsocketComponent.java b/juick-ws/src/main/java/com/juick/ws/WebsocketComponent.java
new file mode 100644
index 00000000..e87b96a5
--- /dev/null
+++ b/juick-ws/src/main/java/com/juick/ws/WebsocketComponent.java
@@ -0,0 +1,140 @@
+package com.juick.ws;
+
+import com.juick.User;
+import com.juick.server.MessagesQueries;
+import com.juick.server.UserQueries;
+import org.apache.http.NameValuePair;
+import org.apache.http.client.utils.URLEncodedUtils;
+import org.springframework.http.HttpHeaders;
+import org.springframework.jdbc.core.JdbcTemplate;
+import org.springframework.stereotype.Component;
+import org.springframework.web.socket.CloseStatus;
+import org.springframework.web.socket.WebSocketSession;
+import org.springframework.web.socket.handler.TextWebSocketHandler;
+
+import javax.inject.Inject;
+import java.io.IOException;
+import java.net.URI;
+import java.util.ArrayList;
+import java.util.Collections;
+import java.util.List;
+import java.util.logging.Level;
+import java.util.logging.Logger;
+
+/**
+ * Created by vitalyster on 28.06.2016.
+ */
+@Component
+public class WebsocketComponent extends TextWebSocketHandler {
+
+    @Inject
+    JdbcTemplate jdbc;
+
+    private static final Logger logger = Logger.getLogger(WebsocketComponent.class.getName());
+    final List<SocketSubscribed> clients = Collections.synchronizedList(new ArrayList<SocketSubscribed>());
+
+    @Override
+    public void afterConnectionEstablished(WebSocketSession session) throws Exception {
+        URI hLocation;
+        String hXRealIP = "";
+
+        hLocation = session.getUri();
+        HttpHeaders headers = session.getHandshakeHeaders();
+        hXRealIP = headers.getOrDefault("X-Real-IP",
+                Collections.singletonList(session.getRemoteAddress().toString())).get(0);
+
+        // Auth
+        User visitor = new User();
+        List<NameValuePair> params = URLEncodedUtils.parse(hLocation, "UTF-8");
+        for (NameValuePair param : params) {
+            if (param.getName().equals("hash")) {
+                String hash = param.getValue();
+                if (hash.length() == 16) {
+                    visitor = UserQueries.getUserByHash(jdbc, hash);
+                } else {
+                    try {
+                        logger.info(String.format("wrong hash for %d from %s", visitor.getUID(), hXRealIP));
+                        session.close(new CloseStatus(403, "Forbidden"));
+                    } catch (IOException e) {
+                        logger.log(Level.WARNING, "ws error", e);
+                    }
+                }
+                break;
+            }
+        }
+        logger.info(String.format("user %d connected to %s from %s", visitor.getUID(), hLocation.getPath(), hXRealIP));
+
+        int MID = 0;
+        SocketSubscribed sockSubscr = null;
+        if (hLocation.getPath().equals("/")) {
+            logger.info(String.format("user %d connected", visitor.getUID()));
+            sockSubscr = new SocketSubscribed(session, hXRealIP, visitor, false);
+        } else if (hLocation.getPath().equals("/_all")) {
+            logger.info(String.format("user %d connected to legacy _all (%s)", visitor.getUID(), hLocation.getPath()));
+            sockSubscr = new SocketSubscribed(session, hXRealIP, visitor, true);
+            sockSubscr.allMessages = true;
+        } else if (hLocation.getPath().equals("/_replies")) {
+            logger.info(String.format("user %d connected to legacy _replies (%s)", visitor.getUID(), hLocation.getPath()));
+            sockSubscr = new SocketSubscribed(session, hXRealIP, visitor, true);
+            sockSubscr.allReplies = true;
+        } else if (hLocation.getPath().matches("/\\d+$")) {
+            try {
+                MID = Integer.parseInt(hLocation.getPath().substring(1));
+            } catch (Exception e) {
+            }
+            if (MID > 0) {
+                if (MessagesQueries.canViewThread(jdbc, MID, visitor.getUID())) {
+                    logger.info(String.format("user %d connected to legacy thread (%d) from %s", visitor.getUID(), MID, hXRealIP));
+                    sockSubscr = new SocketSubscribed(session, hXRealIP, visitor, true);
+                    sockSubscr.MID = MID;
+                } else {
+                    try {
+                        session.close(new CloseStatus(403, "Forbidden"));
+                    } catch (IOException e) {
+                        logger.log(Level.WARNING, "ws error", e);
+                    }
+                }
+            }
+        }
+        if (sockSubscr != null) {
+            synchronized (clients) {
+                clients.add(sockSubscr);
+                logger.info(clients.size() + " clients connected");
+            }
+        }
+    }
+    @Override
+    public void afterConnectionClosed(WebSocketSession session, CloseStatus status) throws Exception {
+        synchronized (clients) {
+            clients.removeIf(c -> {
+                if (c.session.getId().equals(session.getId())) {
+                    logger.info(String.format("session from %s closed with status %d", c.clientName, status.getCode()));
+                    return true;
+                }
+                return false;
+            });
+            logger.info(clients.size() + " clients connected");
+        }
+
+    }
+    class SocketSubscribed {
+
+        WebSocketSession session;
+        String clientName;
+        User visitor;
+        int MID;
+        boolean allMessages;
+        boolean allReplies;
+        long tsConnected;
+        long tsLastData;
+        boolean legacy;
+
+        public SocketSubscribed(WebSocketSession session, String clientName, User visitor, boolean legacy) {
+            this.session = session;
+            this.clientName = clientName;
+            this.visitor = visitor;
+            tsConnected = tsLastData = System.currentTimeMillis();
+            this.legacy = legacy;
+        }
+    }
+}
-- 
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