www.gusucode.com > VC++ 实时监控系统所有的网络链接状态 > VC++ 实时监控系统所有的网络链接状态/gusucode/NetViewState/NetStateDlg.cpp
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// NetStateDlg.cpp : implementation file
//
#include "stdafx.h"
#include "NetState.h"
#include "NetStateDlg.h"
#include "windows.h"
#include "stdio.h"
#include "snmp.h"
#include "winsock.h"
#define HOSTNAMELEN 256
#define PORTNAMELEN 256
#define ADDRESSLEN HOSTNAMELEN+PORTNAMELEN
typedef struct _tcpinfo {
struct _tcpinfo *prev;
struct _tcpinfo *next;
UINT state;
UINT localip;
UINT localport;
UINT remoteip;
UINT remoteport;
} TCPINFO, *PTCPINFO;
typedef BOOL (__stdcall *func_SnmpExtensionInit)(
IN DWORD dwTimeZeroReference,
OUT HANDLE *hPollForTrapEvent,
OUT AsnObjectIdentifier *supportedView);
typedef BOOL (__stdcall *func_SnmpExtensionQuery)(
IN BYTE requestType,
IN OUT RFC1157VarBindList *variableBindings,
OUT AsnInteger *errorStatus,
OUT AsnInteger *errorIndex);
func_SnmpExtensionInit doSnmpExtensionInit = NULL;
func_SnmpExtensionQuery doSnmpExtensionQuery = NULL;
//
// Possible TCP endpoint states
//
static char TcpState[][32] = {
"未知",
"断开",
"监听",
"SYN发送",
"SEN接受",
"已连接",
"FIN",//FIN等待
"FIN2",//FIN_等待2
"等待", //关闭等待
"等待",//正在关闭
"LAST_ACK",
"等待"//TIME_WAIT
};
//
// Lists of endpoints
//
TCPINFO TcpInfoTable;
TCPINFO UdpInfoTable;
CString g_strShow;
//------------------------------------------------------------
//
// GetPortName
//
// Translate port numbers into their text equivalent if
// there is one
//
//------------------------------------------------------------
#ifdef _DEBUG
#define new DEBUG_NEW
#undef THIS_FILE
static char THIS_FILE[] = __FILE__;
#endif
/////////////////////////////////////////////////////////////////////////////
// CAboutDlg dialog used for App About
class CAboutDlg : public CDialog
{
public:
CAboutDlg();
// Dialog Data
//{{AFX_DATA(CAboutDlg)
enum { IDD = IDD_ABOUTBOX };
//}}AFX_DATA
// ClassWizard generated virtual function overrides
//{{AFX_VIRTUAL(CAboutDlg)
protected:
virtual void DoDataExchange(CDataExchange* pDX); // DDX/DDV support
//}}AFX_VIRTUAL
// Implementation
protected:
//{{AFX_MSG(CAboutDlg)
//}}AFX_MSG
DECLARE_MESSAGE_MAP()
};
CAboutDlg::CAboutDlg() : CDialog(CAboutDlg::IDD)
{
//{{AFX_DATA_INIT(CAboutDlg)
//}}AFX_DATA_INIT
}
void CAboutDlg::DoDataExchange(CDataExchange* pDX)
{
CDialog::DoDataExchange(pDX);
//{{AFX_DATA_MAP(CAboutDlg)
//}}AFX_DATA_MAP
}
BEGIN_MESSAGE_MAP(CAboutDlg, CDialog)
//{{AFX_MSG_MAP(CAboutDlg)
// No message handlers
//}}AFX_MSG_MAP
END_MESSAGE_MAP()
/////////////////////////////////////////////////////////////////////////////
// CNetStateDlg dialog
CNetStateDlg::CNetStateDlg(CWnd* pParent /*=NULL*/)
: CDialog(CNetStateDlg::IDD, pParent)
{
//{{AFX_DATA_INIT(CNetStateDlg)
// NOTE: the ClassWizard will add member initialization here
//}}AFX_DATA_INIT
// Note that LoadIcon does not require a subsequent DestroyIcon in Win32
m_hIcon = AfxGetApp()->LoadIcon(IDR_MAINFRAME);
}
void CNetStateDlg::DoDataExchange(CDataExchange* pDX)
{
CDialog::DoDataExchange(pDX);
//{{AFX_DATA_MAP(CNetStateDlg)
DDX_Control(pDX, IDC_NETSATE, m_listNetState);
//}}AFX_DATA_MAP
}
BEGIN_MESSAGE_MAP(CNetStateDlg, CDialog)
//{{AFX_MSG_MAP(CNetStateDlg)
ON_WM_SYSCOMMAND()
ON_WM_PAINT()
ON_WM_QUERYDRAGICON()
ON_BN_CLICKED(IDC_SHOWNETSATE, OnShownetsate)
//}}AFX_MSG_MAP
END_MESSAGE_MAP()
/////////////////////////////////////////////////////////////////////////////
// CNetStateDlg message handlers
BOOL CNetStateDlg::OnInitDialog()
{
CDialog::OnInitDialog();
// Add "About..." menu item to system menu.
// IDM_ABOUTBOX must be in the system command range.
ASSERT((IDM_ABOUTBOX & 0xFFF0) == IDM_ABOUTBOX);
ASSERT(IDM_ABOUTBOX < 0xF000);
CMenu* pSysMenu = GetSystemMenu(FALSE);
if (pSysMenu != NULL)
{
CString strAboutMenu;
strAboutMenu.LoadString(IDS_ABOUTBOX);
if (!strAboutMenu.IsEmpty())
{
pSysMenu->AppendMenu(MF_SEPARATOR);
pSysMenu->AppendMenu(MF_STRING, IDM_ABOUTBOX, strAboutMenu);
}
}
// Set the icon for this dialog. The framework does this automatically
// when the application's main window is not a dialog
SetIcon(m_hIcon, TRUE); // Set big icon
SetIcon(m_hIcon, FALSE); // Set small icon
// TODO: Add extra initialization here
return TRUE; // return TRUE unless you set the focus to a control
}
void CNetStateDlg::OnSysCommand(UINT nID, LPARAM lParam)
{
if ((nID & 0xFFF0) == IDM_ABOUTBOX)
{
CAboutDlg dlgAbout;
dlgAbout.DoModal();
}
else
{
CDialog::OnSysCommand(nID, lParam);
}
}
// If you add a minimize button to your dialog, you will need the code below
// to draw the icon. For MFC applications using the document/view model,
// this is automatically done for you by the framework.
void CNetStateDlg::OnPaint()
{
if (IsIconic())
{
CPaintDC dc(this); // device context for painting
SendMessage(WM_ICONERASEBKGND, (WPARAM) dc.GetSafeHdc(), 0);
// Center icon in client rectangle
int cxIcon = GetSystemMetrics(SM_CXICON);
int cyIcon = GetSystemMetrics(SM_CYICON);
CRect rect;
GetClientRect(&rect);
int x = (rect.Width() - cxIcon + 1) / 2;
int y = (rect.Height() - cyIcon + 1) / 2;
// Draw the icon
dc.DrawIcon(x, y, m_hIcon);
}
else
{
CDialog::OnPaint();
}
}
// The system calls this to obtain the cursor to display while the user drags
// the minimized window.
HCURSOR CNetStateDlg::OnQueryDragIcon()
{
return (HCURSOR) m_hIcon;
}
/////////////////////////////////---------- 网络状态
char* CNetStateDlg::GetPortName( UINT port, char *proto, char *name, int namelen )
{
struct servent* psrvent;
if( psrvent = getservbyport( htons( (USHORT) port ), proto )) {
strcpy( name, psrvent->s_name );
} else {
sprintf(name, "%d", port);
}
return name;
}
//------------------------------------------------------------
//
// GetIpHostName
//
// Translate IP addresses into their name-resolved form
// if possible.
//
//------------------------------------------------------------
char* CNetStateDlg::GetIpHostName( BOOL local, UINT ipaddr, char *name, int namelen )
{
struct hostent *phostent;
UINT nipaddr;
nipaddr = htonl( ipaddr );
if( !ipaddr ) {
if( !local ) {
sprintf( name, "%d.%d.%d.%d",
(nipaddr >> 24) & 0xFF,
(nipaddr >> 16) & 0xFF,
(nipaddr >> 8) & 0xFF,
(nipaddr) & 0xFF);
} else {
gethostname(name, namelen);
}
} else if( ipaddr == 0x0100007f ) {
if( local ) {
gethostname(name, namelen);
} else {
strcpy( name, "localhost" );
}
} else if( phostent = gethostbyaddr( (char *) &ipaddr,
sizeof( nipaddr ), PF_INET )) {
strcpy( name, phostent->h_name );
} else {
sprintf( name, "%d.%d.%d.%d",
(nipaddr >> 24) & 0xFF,
(nipaddr >> 16) & 0xFF,
(nipaddr >> 8) & 0xFF,
(nipaddr) & 0xFF);
}
return name;
}
//------------------------------------------------------------
//
// LoadInetMibEntryPoints
//
// Load the TCP/IP SNMP extension DLL and locate the entry
// points we will use.
//
//------------------------------------------------------------
BOOLEAN CNetStateDlg::LoadInetMibEntryPoints()
{
HINSTANCE hInetLib;
if( !(hInetLib = LoadLibrary( "inetmib1.dll" ))) {
return FALSE;
}
if( !(doSnmpExtensionInit = (func_SnmpExtensionInit) GetProcAddress( hInetLib, "SnmpExtensionInit" )) )
{
return FALSE;
}
if( !(doSnmpExtensionQuery = (func_SnmpExtensionQuery) GetProcAddress( hInetLib, "SnmpExtensionQuery" )) )
{
return FALSE;
}
return TRUE;
}
/*
//------------------------------------------------------------
//
// Main
//
// Do it all. Load and initialize the SNMP extension DLL and
// then build a table of TCP endpoints and UDP endpoints. After
// each table is built resolve addresses to names and print
// out the information
//
//------------------------------------------------------------
int main( int argc, char *argv[] )
{
return 0;
}
*/
void CNetStateDlg::OnCancel()
{
CDialog::OnCancel();
}
void CNetStateDlg::Shownetsate()
{
m_listNetState.ResetContent();
HANDLE hTrapEvent;
AsnObjectIdentifier hIdentifier;
RFC1157VarBindList bindList;
RFC1157VarBind bindEntry;
UINT tcpidentifiers[] = { 1,3,6,1,2,1,6,13,1,1};
UINT udpidentifiers[] = { 1,3,6,1,2,1,7,5,1,1};
AsnInteger errorStatus, errorIndex;
TCPINFO *currentEntry, *newEntry;
UINT currentIndex;
WORD wVersionRequested;
WSADATA wsaData;
char /*localname[HOSTNAMELEN],*/ remotename[HOSTNAMELEN];
char remoteport[PORTNAMELEN], localport[PORTNAMELEN];
char localaddr[ADDRESSLEN], remoteaddr[ADDRESSLEN];
//
// Initialize winsock
//
wVersionRequested = MAKEWORD( 1, 1 );
if( WSAStartup( wVersionRequested, &wsaData ) ) {
MessageBox("Could not initialize Winsock.\n");
return ;
}
//
// Locate and initialize INETMIB1
//
if( !LoadInetMibEntryPoints()) {
MessageBox("Could not load extension DLL.\n");
return ;
}
if( !doSnmpExtensionInit( GetCurrentTime(), &hTrapEvent, &hIdentifier )) {
MessageBox("Could not initialize extension DLL.\n");
return ;
}
//
// Initialize the query structure once
//
bindEntry.name.idLength = 0xA;
bindEntry.name.ids = tcpidentifiers;
bindList.list = &bindEntry;
bindList.len = 1;
TcpInfoTable.prev = &TcpInfoTable;
TcpInfoTable.next = &TcpInfoTable;
//
// Roll through TCP connections
//
currentIndex = 1;
currentEntry = &TcpInfoTable;
while(1) {
if( !doSnmpExtensionQuery( ASN_RFC1157_GETNEXTREQUEST,
&bindList, &errorStatus, &errorIndex )) {
return ;
}
//
// Terminate when we're no longer seeing TCP information
//
if( bindEntry.name.idLength < 0xA ) break;
//
// Go back to start of table if we're reading info
// about the next byte
//
if( currentIndex != bindEntry.name.ids[9] ) {
currentEntry = TcpInfoTable.next;
currentIndex = bindEntry.name.ids[9];
}
//
// Build our TCP information table
//
switch( bindEntry.name.ids[9] ) {
case 1:
//
// Always allocate a new structure
//
newEntry = (TCPINFO *) malloc( sizeof(TCPINFO ));
newEntry->prev = currentEntry;
newEntry->next = &TcpInfoTable;
currentEntry->next = newEntry;
currentEntry = newEntry;
currentEntry->state = bindEntry.value.asnValue.number;
break;
case 2:
currentEntry->localip =
*(UINT *) bindEntry.value.asnValue.address.stream;
currentEntry = currentEntry->next;
break;
case 3:
currentEntry->localport =
bindEntry.value.asnValue.number;
currentEntry = currentEntry->next;
break;
case 4:
currentEntry->remoteip =
*(UINT *) bindEntry.value.asnValue.address.stream;
currentEntry = currentEntry->next;
break;
case 5:
currentEntry->remoteport =
bindEntry.value.asnValue.number;
currentEntry = currentEntry->next;
break;
}
}
//
// Now print the connection information
//
g_strShow.Format("%-15s %-20s %-35s %s\n", "[协议]", "[本地端口]", "[远程地址]", "[状态]" );
m_listNetState.AddString(g_strShow);
currentEntry = TcpInfoTable.next;
while( currentEntry != &TcpInfoTable ) {
/*
sprintf( localaddr, "%s:%s",
GetIpHostName( TRUE, currentEntry->localip, localname, HOSTNAMELEN),
GetPortName( currentEntry->localport, "tcp", localport, PORTNAMELEN ));
*/
g_strShow.Format("%d", currentEntry->localport);
if (GetPortName( currentEntry->localport, "tcp", localport, PORTNAMELEN ) == g_strShow)
{//不加说明
sprintf( localaddr, "%d", currentEntry->localport);
}
else
{
sprintf( localaddr, "%d:%s", currentEntry->localport,
GetPortName( currentEntry->localport, "tcp", localport, PORTNAMELEN ));
}
sprintf( remoteaddr, "%s:%s",
GetIpHostName( FALSE, currentEntry->remoteip, remotename, HOSTNAMELEN),
currentEntry->remoteip ?
GetPortName( currentEntry->remoteport, "tcp", remoteport, PORTNAMELEN ):
"0" );
g_strShow.Format("%-16s %-20s %-35s %s\n", "TCP",
localaddr, remoteaddr,
TcpState[currentEntry->state]);
m_listNetState.AddString(g_strShow);
currentEntry = currentEntry->next;
}
printf("\n");
//
// Initialize the query structure once
//
bindEntry.name.idLength = 0xA;
bindEntry.name.ids = udpidentifiers;
bindList.list = &bindEntry;
bindList.len = 1;
UdpInfoTable.prev = &UdpInfoTable;
UdpInfoTable.next = &UdpInfoTable;
//
// Roll through UDP endpoints
//
currentIndex = 1;
currentEntry = &UdpInfoTable;
while(1) {
if( !doSnmpExtensionQuery( ASN_RFC1157_GETNEXTREQUEST,
&bindList, &errorStatus, &errorIndex )) {
return ;
}
//
// Terminate when we're no longer seeing TCP information
//
if( bindEntry.name.idLength < 0xA ) break;
//
// Go back to start of table if we're reading info
// about the next byte
//
if( currentIndex != bindEntry.name.ids[9] ) {
currentEntry = UdpInfoTable.next;
currentIndex = bindEntry.name.ids[9];
}
//
// Build our TCP information table
//
switch( bindEntry.name.ids[9] ) {
case 1:
//
// Always allocate a new structure
//
newEntry = (TCPINFO *) malloc( sizeof(TCPINFO ));
newEntry->prev = currentEntry;
newEntry->next = &UdpInfoTable;
currentEntry->next = newEntry;
currentEntry = newEntry;
currentEntry->localip =
*(UINT *) bindEntry.value.asnValue.address.stream;
break;
case 2:
currentEntry->localport =
bindEntry.value.asnValue.number;
currentEntry = currentEntry->next;
break;
}
}
//
// Now print the connection information
//
currentEntry = UdpInfoTable.next;
while( currentEntry != &UdpInfoTable ) {
/*
g_strShow.Format("%7s %s:%s\n", "UDP",
GetIpHostName( TRUE, currentEntry->localip, localname, HOSTNAMELEN),
GetPortName( currentEntry->localport, "udp", localport, PORTNAMELEN ) );
*/
//"%-15s %-20s %-35s %s\n"
g_strShow.Format("%d", currentEntry->localport);
if (GetPortName( currentEntry->localport, "udp", localport, PORTNAMELEN )== g_strShow)
{//不加说明
g_strShow.Format("%-16s %d\n", "UDP",
currentEntry->localport);
}
else
{
g_strShow.Format("%-16s %d:%s\n", "UDP",
currentEntry->localport,
GetPortName( currentEntry->localport, "udp", localport, PORTNAMELEN ) );
}
m_listNetState.AddString(g_strShow);
currentEntry = currentEntry->next;
}
//列举完毕
MessageBeep(-1);
}
void CNetStateDlg::OnShownetsate()
{
AfxBeginThread(EnumNetState, this);
}
//列举线程
UINT EnumNetState(LPVOID pParam)
{
//Sleep(1000);
CNetStateDlg* DLG = (CNetStateDlg*) pParam;
DLG->Shownetsate();
return 0;
}