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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.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.http.HttpHeaders;
import org.springframework.jdbc.core.JdbcTemplate;
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;
/**
* Created by vitalyster on 28.06.2016.
*/
public class WebsocketComponent extends TextWebSocketHandler {
@Inject
JdbcTemplate jdbc;
private static final Logger logger = LoggerFactory.getLogger(WebsocketComponent.class);
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.warn("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.warn("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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