My new sendCommand function with libcod (windows)

**Ni3ls** · 2nd January 2016, 09:19

So to get this working in linux

Code:

{"sendCommand"             , gsc_utils_sendCommand                 , 0},

to gsc.cpp

Code:

void gsc_utils_sendCommand();

to gsc_utils.h

Code:

#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

Code:

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

and then compile like the normal way?

**Ni3ls** · 9th January 2016, 13:05

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

Code:

{"sendCommand"             , gsc_utils_sendCommand                 , 0},

to gsc.cpp

Cant do this

Code:

void gsc_utils_sendCommand();

to gsc_utils.h because there is no utils.h

Code:

#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

Code:

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

Code:

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

**Mitch** · 9th January 2016, 15:29

Originally Posted by Ni3ls

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

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

Code:

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

Those errors are because they are only used by Windows.

You should look at examples how to setup a UDP client on Linux.

http://www.linuxhowtos.org/C_C++/socket.htm
http://www.binarytides.com/programmi...ckets-c-linux/

If you need more help try googling 'linux c udp socket'.

Edit: there is also a simpler way to validate the IP address:
http://stackoverflow.com/questions/7...p-address-in-c

PHP Code:


#include <arpa/inet.h>

bool isValidIpAddress(char *ipAddress)
{
    struct sockaddr_in sa;
    int result = inet_pton(AF_INET, ipAddress, &(sa.sin_addr));
    return result != 0;
}

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