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// GetTcpTable.cpp : Defines the entry point for the console application.
//
// Link to Ws2_32.lib
//#include <winsock2.h>
#include <ws2tcpip.h>
// Link to Iphlpapi.lib
#include <iphlpapi.h>
#include <stdio.h>
#include <tchar.h>
#include <m_core.h>
#include "netstat.h"
// Note: could also use malloc() and free()
#define MALLOC(x) HeapAlloc(GetProcessHeap(), 0, (x))
#define FREE(x) HeapFree(GetProcessHeap(), 0, (x))
struct CONNECTION* GetConnectionsTable()
{
// Declare and initialize variables
MIB_TCPTABLE_OWNER_PID *pTcpTable;
DWORD dwSize = 0;
DWORD dwRetVal = 0;
struct in_addr IpAddr;
int i;
struct CONNECTION *connHead=NULL;
pTcpTable = (MIB_TCPTABLE_OWNER_PID *) MALLOC(sizeof (MIB_TCPTABLE_OWNER_PID));
if (pTcpTable == NULL)
{
//printf("Error allocating memory!\n");
return NULL;
}
dwSize = sizeof (MIB_TCPTABLE_OWNER_PID);
// Make an initial call to GetTcpTable to
// get the necessary size into the dwSize variable
if ((dwRetVal = GetExtendedTcpTable(pTcpTable, &dwSize, TRUE,AF_INET,TCP_TABLE_OWNER_PID_ALL,0)) == ERROR_INSUFFICIENT_BUFFER)
{
FREE(pTcpTable);
pTcpTable = (MIB_TCPTABLE_OWNER_PID *) MALLOC(dwSize);
if (pTcpTable == NULL)
{
//printf("Error allocating memory\n");
return NULL;
}
}
// Make a second call to GetTcpTable to get
// the actual data we require
if ((dwRetVal = GetExtendedTcpTable(pTcpTable, &dwSize, TRUE,AF_INET,TCP_TABLE_OWNER_PID_ALL,0)) == NO_ERROR)
{
//printf("\tLocal Addr\tLocal Port\tRemote Addr\tRemote Port\n");
//printf("Number of entries: %d\n", (int) pTcpTable->dwNumEntries);
for (i = 0; i < (int) pTcpTable->dwNumEntries; i++)
{
struct CONNECTION* newConn=(struct CONNECTION*)mir_alloc(sizeof(struct CONNECTION));
memset(newConn,0,sizeof(struct CONNECTION));
//pid2name(pTcpTable->table[i].dwOwningPid,&newConn->Pname);
if(pTcpTable->table[i].dwLocalAddr)
{
IpAddr.S_un.S_addr = (ULONG) pTcpTable->table[i].dwLocalAddr;
//_snprintf(newConn->strIntIp,_countof(newConn->strIntIp),"%d.%d.%d.%d",IpAddr.S_un.S_un_b.s_b1,IpAddr.S_un.S_un_b.s_b2,IpAddr.S_un.S_un_b.s_b3,IpAddr.S_un.S_un_b.s_b4);
wcsncpy(newConn->strIntIp, mir_a2t(inet_ntoa(IpAddr)),_tcslen(mir_a2t(inet_ntoa(IpAddr))));
}
if(pTcpTable->table[i].dwRemoteAddr)
{
IpAddr.S_un.S_addr = (u_long) pTcpTable->table[i].dwRemoteAddr;
wcsncpy(newConn->strExtIp, mir_a2t(inet_ntoa(IpAddr)),_tcslen(mir_a2t(inet_ntoa(IpAddr))));
}
newConn->state = pTcpTable->table[i].dwState;
newConn->intIntPort =ntohs((u_short)pTcpTable->table[i].dwLocalPort);
newConn->intExtPort =ntohs((u_short)pTcpTable->table[i].dwRemotePort);
newConn->Pid=pTcpTable->table[i].dwOwningPid;
switch (pTcpTable->table[i].dwState)
{
case MIB_TCP_STATE_CLOSED:
//printf("CLOSED\n");
break;
case MIB_TCP_STATE_LISTEN:
//printf("LISTEN\n");
break;
case MIB_TCP_STATE_SYN_SENT:
//printf("SYN-SENT\n");
break;
case MIB_TCP_STATE_SYN_RCVD:
//printf("SYN-RECEIVED\n");
break;
case MIB_TCP_STATE_ESTAB:
//printf("ESTABLISHED\n");
break;
case MIB_TCP_STATE_FIN_WAIT1:
//printf("FIN-WAIT-1\n");
break;
case MIB_TCP_STATE_FIN_WAIT2:
//printf("FIN-WAIT-2 \n");
break;
case MIB_TCP_STATE_CLOSE_WAIT:
//printf("CLOSE-WAIT\n");
break;
case MIB_TCP_STATE_CLOSING:
//printf("CLOSING\n");
break;
case MIB_TCP_STATE_LAST_ACK:
//printf("LAST-ACK\n");
break;
case MIB_TCP_STATE_TIME_WAIT:
//printf("TIME-WAIT\n");
break;
case MIB_TCP_STATE_DELETE_TCB:
//printf("DELETE-TCB\n");
break;
default:
//printf("UNKNOWN dwState value\n");
break;
}
newConn->next = connHead;
connHead=newConn;
//printf("TCP[%d]:%s%15d%20s%15d\n", i, szLocalAddr,ntohs((u_short)pTcpTable->table[i].dwLocalPort), szRemoteAddr,ntohs((u_short)pTcpTable->table[i].dwRemotePort));
//printf("\tTCP[%d] Local Addr: %s\n", i, szLocalAddr);
// printf("\tTCP[%d] Local Port: %d \n", i, ntohs((u_short)pTcpTable->table[i].dwLocalPort));
//printf("\tTCP[%d] Remote Addr: %s\n", i, szRemoteAddr);
//printf("\tTCP[%d] Remote Port: %d\n", i, ntohs((u_short)pTcpTable->table[i].dwRemotePort));
}
}
else
{
//printf("\tGetTcpTable() failed with return value %d\n", dwRetVal);
FREE(pTcpTable);
return NULL;
}
if (pTcpTable != NULL)
{
FREE(pTcpTable);
pTcpTable = NULL;
}
return connHead;
}
void deleteConnectionsTable(struct CONNECTION* head)
{
struct CONNECTION *cur=head,*del;
while(cur!=NULL)
{
del=cur;
cur=cur->next;
mir_free(del);
head=cur;
}
head=NULL;
}
struct CONNECTION* searchConnection(struct CONNECTION* head,TCHAR *intIp,TCHAR *extIp,int intPort,int extPort,int state)
{
struct CONNECTION *cur=head;
while(cur!=NULL)
{
if(wcscmp(cur->strIntIp,intIp)==0 && wcscmp(cur->strExtIp,extIp)==0 && cur->intExtPort==extPort && cur->intIntPort==intPort && cur->state==state)
return cur;
cur=cur->next;
}
return NULL;
}
void getDnsName(TCHAR *strIp,TCHAR *strHostName)
{
struct in_addr iaHost;
struct hostent *h;
iaHost.s_addr = inet_addr(mir_t2a(strIp));
if ((h = gethostbyaddr ((char *)&iaHost, sizeof(struct in_addr), AF_INET))== NULL)
{ // get the host info error
_stprintf(strHostName,_T("%s"), strIp);
return;
}
_stprintf(strHostName,_T("%s"),mir_a2t(h->h_name));
//_tcsncpy_s(strHostName,128, h->h_name,_tcslen(h->h_name));
}
int wildcmp(const TCHAR *wild, const TCHAR *string) {
// Written by Jack Handy - jakkhandy@hotmail.com
const TCHAR *cp = NULL, *mp = NULL;
while ((*string) && (*wild != '*')) {
if ((*wild != *string) && (*wild != '?')) {
return 0;
}
wild++;
string++;
}
while (*string) {
if (*wild == '*') {
if (!*++wild) {
return 1;
}
mp = wild;
cp = string+1;
} else if ((*wild == *string) || (*wild == '?')) {
wild++;
string++;
} else {
wild = mp;
string = cp++;
}
}
while (*wild == '*') {
wild++;
}
return !*wild;
}
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