source: network-game/server/server.cpp@ 0cc431d

#include "../common/compiler.h"

#include <sys/types.h>
#include <cstdlib>
#include <unistd.h>
#include <sys/socket.h>
#include <netinet/in.h>
#include <string>
#include <netdb.h>
#include <cstdio>
#include <iostream>
#include <vector>
#include <algorithm>

#include <mysql/mysql.h>

#include <openssl/bio.h>
#include <openssl/ssl.h>
#include <openssl/err.h>

#include "player.h"
#include "../common/message.h"
///////////
using namespace std;

void error(const char *msg)
{
    perror(msg);
    exit(0);
}

player *findPlayerByName(vector<player> &vec, string name)
{
   vector<player>::iterator it;

   for (it = vec.begin(); it != vec.end(); it++)
   {
      if ( it->name.compare(name) == 0 )
         return &(*it);
   }

   return NULL;
}

int main(int argc, char *argv[])
{
   int sock, length, n;
   socklen_t fromlen;
   struct sockaddr_in server;
   struct sockaddr_in from;
   NETWORK_MSG clientMsg, serverMsg;
   vector<player> vctPlayers;

   srand(time(NULL));
   int num = (rand() % 1000) + 1;

   cout << "num: " << num << endl;

   SSL_load_error_strings();
   ERR_load_BIO_strings();
   OpenSSL_add_all_algorithms();

   if (argc < 2) {
      fprintf(stderr, "ERROR, no port provided\n");
      exit(0);
   }
   
   sock=socket(AF_INET, SOCK_DGRAM, 0);
   if (sock < 0) error("Opening socket");
   length = sizeof(server);
   bzero(&server,length);
   server.sin_family=AF_INET;
   server.sin_port=htons(atoi(argv[1]));
   server.sin_addr.s_addr=INADDR_ANY;
   if ( bind(sock, (struct sockaddr *)&server, length) < 0 ) 
      error("binding");
   fromlen = sizeof(struct sockaddr_in);
   while (true) {
      // if n == 0, means the client disconnected. may want to check this
      n = receiveMessage(&clientMsg, sock, &from);
      if (n < 0)
         error("recieveMessage");
      cout << "msg: " << clientMsg.buffer << endl;

      // Ptoyovol Design
      //
      // Client sends a login message
      // Server replies with client's position in the world and positions of
      // oall other logged in players
      // Merver sends player ids along with locations
      // This means a newly logged in client will need to know which id is
      // assigned to it
      // So server needs to send an id message, wait for an ack, and then send
      // the location messages

      // When a client shuts down, it sends a message to indicate this so the
      // server can remove it from the list of connected clients
      // Eventually, there'll need to be a way to detect timeouts from clients
      // (if they crashed or otherwise failed to send the logout message)

      if (strcmp(clientMsg.buffer, "Hello") == 0)
      {
         player *p = findPlayerByName(vctPlayers, "Boberty");

         if (p == NULL)
         {
            vctPlayers.push_back(player("Boberty", from));
            strcpy(serverMsg.buffer, "I'm thinking of a number between 1 and 1000. Guess what it is.");
         }
         else
         {
            strcpy(serverMsg.buffer, "Player has already logged in.");
         }
      }else {
         int guess = atoi(clientMsg.buffer);

         cout << "guess: " << guess << endl;

         if (guess < 1 || guess > 1000) {
            strcpy(serverMsg.buffer, "You must guess a number between 1 and 1000");
         }else if(guess > num)
            strcpy(serverMsg.buffer, "The number I'm thinking of is less than that.");
         else if(guess < num)
            strcpy(serverMsg.buffer, "The number I'm thinking of is greater than that.");
         else if(guess == num) {
            strcpy(serverMsg.buffer, "Congratulations! I will now think of a new number.");
            num = (rand() % 1000) + 1;
         }      
      }

      cout << "msg: " << serverMsg.buffer << endl;

      n = sendMessage(&serverMsg, sock, &from);
      if (n  < 0)
         error("sendMessage");
   }
   return 0;
}

int dbtest()
{
        MYSQL *connection, mysql;
        MYSQL_RES *result;
        MYSQL_ROW row;
        int query_state;

        mysql_init(&mysql);

        connection = mysql_real_connect(&mysql,"localhost","pythonAdmin","pyMaster09*","pythondb",0,0,0);

        if (connection == NULL) {
                cout << mysql_error(&mysql) << endl;
                return 1;
        }else
                cout << "Connection successful" << endl;

        query_state = mysql_query(connection, "SELECT * FROM users");

        if (query_state !=0) {
                cout << mysql_error(connection) << endl;
                return 1;
        }

        result = mysql_store_result(connection);

        while ( ( row = mysql_fetch_row(result)) != NULL ) {
                cout << row[0] << ", " << row[1] << ", " << row[2] << endl;
        }

        mysql_free_result(result);
        mysql_close(connection);

        cout << "Test finished" << endl;

        return 0;
}