Added an version check

utils/update_check.c

@@ -0,0 +1,50 @@
+#include <stdio.h>
+#include <string.h>
+#include <sys/socket.h>
+#include <arpa/inet.h>
+#include "update_check.h"
+#include "logger.h"
+
+int checkForUpdate(char ver[10]){
+    int sock;
+    struct sockaddr_in server;
+    char server_reply[2000];
+
+    //Create Socket
+    sock = socket(AF_INET, SOCK_STREAM, 0);
+    if( sock == -1){
+        printf("Error while creating socket.");
+        logger("Error while creating socket");
+    }
+    
+    server.sin_addr.s_addr = inet_addr("127.0.0.1");
+    server.sin_family = AF_INET;
+    server.sin_port = htons( 34000 );
+
+    //Connect to Server
+    if(connect(sock, (struct sockaddr *)&server, sizeof(server)) < 0){
+        perror("Error. Connnection failed.");
+        logger("[ERROR] Connection to update server failed.");
+        return 1;
+    }
+
+        if( send(sock, ver, strlen(ver), 0) < 0){
+        puts("Error while communicating with server.");
+        logger("[ERROR] Send to server failed.");
+    }
+
+    if( recv(sock, server_reply, 2000, 0) < 0){
+        puts("Error while communicating with server.");
+        logger("[ERROR] Receive from server failed.");
+    }
+    if(!strcmp(server_reply, "VERSION_OUTDATED")){
+        printf("\033[0;31mYour client is outdated. Please update your client.\033[0m\n");
+        logger("[WARNING] Client is outdated.");
+    }
+
+    if(!strcmp(server_reply, "VERSION_OK")){
+        logger("[INFO] Client is up-to-date.");
+    }
+    close(sock);
+    return 0;
+}

utils/update_check.h

@@ -0,0 +1,6 @@
+#ifndef _UPDATE_CHECK_H_
+#define _UPDATE_CHECK_H_
+
+int checkForUpdate(char ver[10]);
+
+#endif