My new sendCommand function with libcod (windows)

[Kantin]

Hey,
So with this function you can send data to another server (tested with cod2 and cod4 servers) (like rcon commands) or you can get data from it. If you want to use it you have to add my source to Mitch's libcod_win project (https://github.com/M-itch/libcod_win).

Changes:

[gsc.cpp] Add the following code to the scriptFunctions array.

		{"sendCommand"             , gsc_utils_sendCommand                 , 0}, 
	

[gsc_utils.h]

		void gsc_utils_sendCommand(); 
	

[gsc_utils.cpp]

		#include <math.h>
#include <winsock2.h> 
#include <windows.h>

BOOL isValidNumber(const char *charnum, int **number)
{
  int i, num = 0;

  if(charnum == NULL)
  {
    return 0;
  }

  for(i = 0; i < strlen(charnum); i++)
  {
    if(charnum[i] >= '0' && charnum[i] <= '9')
    {
      num += pow(10.0, (int)(strlen(charnum) - i - 1)) * (charnum[i] - '0');
    }
    else
    {
      return 0;
    }
  }

  *number =  (int *)num;

  return 1;
}

BOOL isValidRange(const char *range)
{
  int *num;

  if(!isValidNumber(range, &num))
  {
    return 0;
  }

  if((int)num >= 0 && (int)num <= 255)
  {
    return 1;
  }

  return 0;
}

int isValidAddress(const char *ip)
{
  int i, dots = 0;
  char *token;

  for(i = 0; i < strlen(ip); i++)
  {
    if(ip[i] == '.')
      dots++;
  }

  if(dots != 3)
  {
    return 0;
  }

  for(i = 0; i < dots + 1; i++)
  {
    if(i == 0)
    {
      token = strtok(strdup(ip), ".");
    }
    else
    {
      token = strtok(NULL, ".");
    }
    if(!isValidRange(token))
    {
      return 0;
    }
  }

  return 1;
}

char* sendCommand(char *ip, int port, char *message)
{
  SOCKET Socket;
  WSADATA WSAData = {0};
  SOCKADDR_IN server;
  struct timeval timeout;      

  int i;
  char *data;
  char *fixed;
  char response[16384];

  data = strcat(strdup("00000"), message);

  for(i = 0; i < 4; i++)
  {
    data[i] = 0xFF;
  }
  data[i] = 0x02;

  server.sin_family = AF_INET;
  server.sin_port = htons(port);
  server.sin_addr.s_addr = inet_addr(ip);

  timeout.tv_sec = 2;
  timeout.tv_usec = 2;

  if(WSAStartup (MAKEWORD(2, 2), &WSAData))
  {
    return "0";
  }

  Socket = socket(AF_INET, SOCK_DGRAM, IPPROTO_UDP);
  if(Socket == INVALID_SOCKET)
  {
    WSACleanup();
    return "0";        
  }

  if(setsockopt(Socket, SOL_SOCKET, SO_RCVTIMEO, (char *)&timeout, sizeof(timeout)) < 0)
  {
    closesocket(Socket);
    WSACleanup();
    return "0";
  }

  if(setsockopt(Socket, SOL_SOCKET, SO_SNDTIMEO, (char *)&timeout, sizeof(timeout)) < 0)
  {
    closesocket(Socket);
    WSACleanup();
    return "0";
  }

  if(connect(Socket, (SOCKADDR *)&server, sizeof(server)) == SOCKET_ERROR)
  {
    closesocket(Socket);
    WSACleanup();
    return "0";
  }

  sendto(Socket, data, strlen(data), 0, (SOCKADDR *)&server, sizeof(server));
  i = recvfrom(Socket, response, sizeof(response), 0, 0, 0);

  if(i == SOCKET_ERROR)
  {
    closesocket(Socket);
    WSACleanup();
    return "0";
  }

  response[i] = '\0';

  closesocket(Socket);
  WSACleanup();

  fixed = strtok(response, "\\");
  fixed = strtok(NULL, "\0");

  for(i = 0; i < strlen(fixed); i++)
  {
    if(fixed[i] == '\n')
    {
      fixed[i] = '\t';
    }
    if(fixed[i] == '"')
    {
      fixed[i] = '\t';
    }
    if(fixed[i] == '\\')
    {
      fixed[i] = '\t';
    }
  }

  return fixed;
}

void gsc_utils_sendCommand() 
{
  char *ip;
  char *data;
  int port = 0;


  if(!stackGetParams((char *)"sis", &ip, &port, &data) || strlen(ip) == 0 || port == 0 || strlen(data) == 0)
  {
    stackPushUndefined();
    return;
  }

  if(isValidAddress(ip))
  {
    stackPushString(sendCommand(ip, port, data));
  }
  else
  {
    stackPushInt(0);
  }
} 
	

Add the Ws2_32.lib to the project and compile it!

How to use:

I created an ingame server tracker, so I need the another server's parameters.

		resp = sendCommand("148.251.81.10", 28844, "getstatus");
array = StrTok(resp, "\t"); 
	

The datas should store as a clientcvar and set inside a menu's itemdef to the dvar attribute, and here is the result:



Or with this you can create an ingame rcon tool, and can connect to another server via it.

		sendCommand("148.251.81.10", 28844, "rcon <password> map mp_toujane"); 
	

[Ni3ls]

Is this also possible in libcod for Linux?

[Mitch]

Is this also possible in libcod for Linux?

Yes, but you need other headers.

http://linux.die.net/man/2/socket

[IzNoGoD]

Why dont you just store the stuff in a mysql database as it seems you control all the servers that need it...

[Ni3ls]

So to get this working in linux

{"sendCommand"             , gsc_utils_sendCommand                 , 0},

to gsc.cpp

void gsc_utils_sendCommand();

to gsc_utils.h

#include <math.h> 
#include <sys/types.h>
#include <sys/socket.h>

BOOL isValidNumber(const char *charnum, int **number) 
{ 
  int i, num = 0; 

  if(charnum == NULL) 
  { 
    return 0; 
  } 

  for(i = 0; i < strlen(charnum); i++) 
  { 
    if(charnum[i] >= '0' && charnum[i] <= '9') 
    { 
      num += pow(10.0, (int)(strlen(charnum) - i - 1)) * (charnum[i] - '0'); 
    } 
    else 
    { 
      return 0; 
    } 
  } 

  *number =  (int *)num; 

  return 1; 
} 

BOOL isValidRange(const char *range) 
{ 
  int *num; 

  if(!isValidNumber(range, &num)) 
  { 
    return 0; 
  } 

  if((int)num >= 0 && (int)num <= 255) 
  { 
    return 1; 
  } 

  return 0; 
} 

int isValidAddress(const char *ip) 
{ 
  int i, dots = 0; 
  char *token; 

  for(i = 0; i < strlen(ip); i++) 
  { 
    if(ip[i] == '.') 
      dots++; 
  } 

  if(dots != 3) 
  { 
    return 0; 
  } 

  for(i = 0; i < dots + 1; i++) 
  { 
    if(i == 0) 
    { 
      token = strtok(strdup(ip), "."); 
    } 
    else 
    { 
      token = strtok(NULL, "."); 
    } 
    if(!isValidRange(token)) 
    { 
      return 0; 
    } 
  } 

  return 1; 
} 

char* sendCommand(char *ip, int port, char *message) 
{ 
  SOCKET Socket; 
  WSADATA WSAData = {0}; 
  SOCKADDR_IN server; 
  struct timeval timeout;       

  int i; 
  char *data; 
  char *fixed; 
  char response[16384]; 

  data = strcat(strdup("00000"), message); 

  for(i = 0; i < 4; i++) 
  { 
    data[i] = 0xFF; 
  } 
  data[i] = 0x02; 

  server.sin_family = AF_INET; 
  server.sin_port = htons(port); 
  server.sin_addr.s_addr = inet_addr(ip); 

  timeout.tv_sec = 2; 
  timeout.tv_usec = 2; 

  if(WSAStartup (MAKEWORD(2, 2), &WSAData)) 
  { 
    return "0"; 
  } 

  Socket = socket(AF_INET, SOCK_DGRAM, IPPROTO_UDP); 
  if(Socket == INVALID_SOCKET) 
  { 
    WSACleanup(); 
    return "0";         
  } 

  if(setsockopt(Socket, SOL_SOCKET, SO_RCVTIMEO, (char *)&timeout, sizeof(timeout)) < 0) 
  { 
    closesocket(Socket); 
    WSACleanup(); 
    return "0"; 
  } 

  if(setsockopt(Socket, SOL_SOCKET, SO_SNDTIMEO, (char *)&timeout, sizeof(timeout)) < 0) 
  { 
    closesocket(Socket); 
    WSACleanup(); 
    return "0"; 
  } 

  if(connect(Socket, (SOCKADDR *)&server, sizeof(server)) == SOCKET_ERROR) 
  { 
    closesocket(Socket); 
    WSACleanup(); 
    return "0"; 
  } 

  sendto(Socket, data, strlen(data), 0, (SOCKADDR *)&server, sizeof(server)); 
  i = recvfrom(Socket, response, sizeof(response), 0, 0, 0); 

  if(i == SOCKET_ERROR) 
  { 
    closesocket(Socket); 
    WSACleanup(); 
    return "0"; 
  } 

  response[i] = '\0'; 

  closesocket(Socket); 
  WSACleanup(); 

  fixed = strtok(response, "\\"); 
  fixed = strtok(NULL, "\0"); 

  for(i = 0; i < strlen(fixed); i++) 
  { 
    if(fixed[i] == '\n') 
    { 
      fixed[i] = '\t'; 
    } 
    if(fixed[i] == '"') 
    { 
      fixed[i] = '\t'; 
    } 
    if(fixed[i] == '\\') 
    { 
      fixed[i] = '\t'; 
    } 
  } 

  return fixed; 
} 

void gsc_utils_sendCommand()  
{ 
  char *ip; 
  char *data; 
  int port = 0; 


  if(!stackGetParams((char *)"sis", &ip, &port, &data) || strlen(ip) == 0 || port == 0 || strlen(data) == 0) 
  { 
    stackPushUndefined(); 
    return; 
  } 

  if(isValidAddress(ip)) 
  { 
    stackPushString(sendCommand(ip, port, data)); 
  } 
  else 
  { 
    stackPushInt(0); 
  } 
}

to gsc_utils.cpp

with these headers

#include <math.h> 
#include <sys/types.h>
#include <sys/socket.h>

and then compile like the normal way?

[Ni3ls]

Hey I just asked you,
And this is crazy.
I still dont know it,
So answer maybe?
©Carly Rae Jepsen

[qwerty]

It's very simple. Do a console app or whatever which send the udp package to the server and catch the answer. It's the easiest way to test and debug your solution. You can also track your messages with the glorious Wireshark software. The basic has already been written in the post above, it's not so hard. That's how do it yourself. And of course here is the helping hand http://bfy.tw/3YA8

Hint:
I did the same stuff with C# tool to communicate cod servers, and between the send and receive timestamp there is (small) delay, so it can lag your server I guess.

[Ni3ls]

I suck with linux :P And Kantin converted it to a "cod2" function

[Ni3ls]

But Which headers to use?

[Ni3ls]

If have been trying it for a while now, but I cant get it working. What I did.

{"sendCommand"             , gsc_utils_sendCommand                 , 0},

to gsc.cpp

Cant do this

void gsc_utils_sendCommand();

to gsc_utils.h because there is no utils.h

#include "gsc_utils.hpp"

#if COMPILE_UTILS == 1

#include <dirent.h> // dir stuff
#include <assert.h>
#include <ctype.h> // toupper
#include <sys/types.h>// new
#include <sys/socket.h> //new

to the top of gsc_utils.cpp

BOOL isValidNumber(const char *charnum, int **number) 
{ 
  int i, num = 0; 

  if(charnum == NULL) 
  { 
    return 0; 
  } 

  for(i = 0; i < strlen(charnum); i++) 
  { 
    if(charnum[i] >= '0' && charnum[i] <= '9') 
    { 
      num += pow(10.0, (int)(strlen(charnum) - i - 1)) * (charnum[i] - '0'); 
    } 
    else 
    { 
      return 0; 
    } 
  } 

  *number =  (int *)num; 

  return 1; 
} 

BOOL isValidRange(const char *range) 
{ 
  int *num; 

  if(!isValidNumber(range, &num)) 
  { 
    return 0; 
  } 

  if((int)num >= 0 && (int)num <= 255) 
  { 
    return 1; 
  } 

  return 0; 
} 

int isValidAddress(const char *ip) 
{ 
  int i, dots = 0; 
  char *token; 

  for(i = 0; i < strlen(ip); i++) 
  { 
    if(ip[i] == '.') 
      dots++; 
  } 

  if(dots != 3) 
  { 
    return 0; 
  } 

  for(i = 0; i < dots + 1; i++) 
  { 
    if(i == 0) 
    { 
      token = strtok(strdup(ip), "."); 
    } 
    else 
    { 
      token = strtok(NULL, "."); 
    } 
    if(!isValidRange(token)) 
    { 
      return 0; 
    } 
  } 

  return 1; 
} 

char* sendCommand(char *ip, int port, char *message) 
{ 
  SOCKET Socket; 
  WSADATA WSAData = {0}; 
  SOCKADDR_IN server; 
  struct timeval timeout;       

  int i; 
  char *data; 
  char *fixed; 
  char response[16384]; 

  data = strcat(strdup("00000"), message); 

  for(i = 0; i < 4; i++) 
  { 
    data[i] = 0xFF; 
  } 
  data[i] = 0x02; 

  server.sin_family = AF_INET; 
  server.sin_port = htons(port); 
  server.sin_addr.s_addr = inet_addr(ip); 

  timeout.tv_sec = 2; 
  timeout.tv_usec = 2; 

  if(WSAStartup (MAKEWORD(2, 2), &WSAData)) 
  { 
    return "0"; 
  } 

  Socket = socket(AF_INET, SOCK_DGRAM, IPPROTO_UDP); 
  if(Socket == INVALID_SOCKET) 
  { 
    WSACleanup(); 
    return "0";         
  } 

  if(setsockopt(Socket, SOL_SOCKET, SO_RCVTIMEO, (char *)&timeout, sizeof(timeout)) < 0) 
  { 
    closesocket(Socket); 
    WSACleanup(); 
    return "0"; 
  } 

  if(setsockopt(Socket, SOL_SOCKET, SO_SNDTIMEO, (char *)&timeout, sizeof(timeout)) < 0) 
  { 
    closesocket(Socket); 
    WSACleanup(); 
    return "0"; 
  } 

  if(connect(Socket, (SOCKADDR *)&server, sizeof(server)) == SOCKET_ERROR) 
  { 
    closesocket(Socket); 
    WSACleanup(); 
    return "0"; 
  } 

  sendto(Socket, data, strlen(data), 0, (SOCKADDR *)&server, sizeof(server)); 
  i = recvfrom(Socket, response, sizeof(response), 0, 0, 0); 

  if(i == SOCKET_ERROR) 
  { 
    closesocket(Socket); 
    WSACleanup(); 
    return "0"; 
  } 

  response[i] = '\0'; 

  closesocket(Socket); 
  WSACleanup(); 

  fixed = strtok(response, "\\"); 
  fixed = strtok(NULL, "\0"); 

  for(i = 0; i < strlen(fixed); i++) 
  { 
    if(fixed[i] == '\n') 
    { 
      fixed[i] = '\t'; 
    } 
    if(fixed[i] == '"') 
    { 
      fixed[i] = '\t'; 
    } 
    if(fixed[i] == '\\') 
    { 
      fixed[i] = '\t'; 
    } 
  } 

  return fixed; 
} 

void gsc_utils_sendCommand()  
{ 
  char *ip; 
  char *data; 
  int port = 0; 


  if(!stackGetParams((char *)"sis", &ip, &port, &data) || strlen(ip) == 0 || port == 0 || strlen(data) == 0) 
  { 
    stackPushUndefined(); 
    return; 
  } 

  if(isValidAddress(ip)) 
  { 
    stackPushString(sendCommand(ip, port, data)); 
  } 
  else 
  { 
    stackPushInt(0); 
  } 
}

to the end of gsc_utils.cpp, but before the last #endif

It compiles with a lot of errors and I cant start a server

gsc_utils.cpp:1163: error: ‘BOOL’ does not name a type
gsc_utils.cpp: In function ‘int isValidAddress(const char*)’:
gsc_utils.cpp:1206: error: ‘isValidRange’ was not declared in this scope
gsc_utils.cpp: In function ‘char* sendCommand(char*, int, char*)’:
gsc_utils.cpp:1217: error: ‘SOCKET’ was not declared in this scope
gsc_utils.cpp:1217: error: expected ‘;’ before ‘Socket’
gsc_utils.cpp:1218: error: ‘WSADATA’ was not declared in this scope
gsc_utils.cpp:1218: error: expected ‘;’ before ‘WSAData’
gsc_utils.cpp:1219: error: ‘SOCKADDR_IN’ was not declared in this scope
gsc_utils.cpp:1219: error: expected ‘;’ before ‘server’
gsc_utils.cpp:1235: error: ‘server’ was not declared in this scope

with a lot more "not declared" errors