/**///////////////////////////////////////////////////////////////////////
// netstate.cpp文件
#include <stdio.h>
#include <windows.h>
#include <Iphlpapi.h>
#include <tlhelp32.h>
#pragma comment(lib, "Iphlpapi.lib")
#pragma comment(lib, "WS2_32.lib")
typedef struct
{
DWORD dwState; // 连接状态
DWORD dwLocalAddr; // 本地地址
DWORD dwLocalPort; // 本地端口
DWORD dwRemoteAddr; // 远程地址
DWORD dwRemotePort; // 远程端口
DWORD dwProcessId; // 进程ID号
} MIB_TCPEXROW, *PMIB_TCPEXROW;
typedef struct
{
DWORD dwNumEntries;
MIB_TCPEXROW table[ANY_SIZE];
} MIB_TCPEXTABLE, *PMIB_TCPEXTABLE;
typedef struct
{
DWORD dwLocalAddr; // 本地地址
DWORD dwLocalPort; // 本地端口
DWORD dwProcessId; // 进程ID号
} MIB_UDPEXROW, *PMIB_UDPEXROW;
typedef struct
{
DWORD dwNumEntries;
MIB_UDPEXROW table[ANY_SIZE];
} MIB_UDPEXTABLE, *PMIB_UDPEXTABLE;
// 扩展函数原型
typedef DWORD (WINAPI *PFNAllocateAndGetTcpExTableFromStack)(
PMIB_TCPEXTABLE *pTcpTable,
BOOL bOrder,
HANDLE heap,
DWORD zero,
DWORD flags
);
typedef DWORD (WINAPI *PFNAllocateAndGetUdpExTableFromStack)(
PMIB_UDPEXTABLE *pUdpTable,
BOOL bOrder,
HANDLE heap,
DWORD zero,
DWORD flags
);
PCHAR ProcessPidToName(HANDLE hProcessSnap, DWORD ProcessId, PCHAR ProcessName);
int main()
{
// 定义扩展函数指针
PFNAllocateAndGetTcpExTableFromStack pAllocateAndGetTcpExTableFromStack;
PFNAllocateAndGetUdpExTableFromStack pAllocateAndGetUdpExTableFromStack;
// 获取扩展函数的入口地址
HMODULE hModule = ::LoadLibrary("iphlpapi.dll");
pAllocateAndGetTcpExTableFromStack =
(PFNAllocateAndGetTcpExTableFromStack)::GetProcAddress(hModule,
"AllocateAndGetTcpExTableFromStack");
pAllocateAndGetUdpExTableFromStack =
(PFNAllocateAndGetUdpExTableFromStack)::GetProcAddress(hModule,
"AllocateAndGetUdpExTableFromStack");
if(pAllocateAndGetTcpExTableFromStack == NULL || pAllocateAndGetUdpExTableFromStack == NULL)
{
printf(" Ex APIs are not present \n ");
// 说明你应该调用普通的IP帮助API去获取TCP连接表和UDP监听表
return 0;
}
// 调用扩展函数，获取TCP扩展连接表和UDP扩展监听表
PMIB_TCPEXTABLE pTcpExTable;
PMIB_UDPEXTABLE pUdpExTable;
// pTcpExTable和pUdpExTable所指的缓冲区自动由扩展函数在进程堆中申请
if(pAllocateAndGetTcpExTableFromStack(&pTcpExTable, TRUE, GetProcessHeap(), 2, 2) != 0)
{
printf(" Failed to snapshot TCP endpoints.\n");
return -1;
}
if(pAllocateAndGetUdpExTableFromStack(&pUdpExTable, TRUE, GetProcessHeap(), 2, 2) != 0)
{
printf(" Failed to snapshot UDP endpoints.\n");
return -1;
}
// 给系统内的所有进程拍一个快照
HANDLE hProcessSnap = ::CreateToolhelp32Snapshot(TH32CS_SNAPPROCESS, 0);
if(hProcessSnap == INVALID_HANDLE_VALUE)
{
printf(" Failed to take process snapshot. Process names will not be shown.\n\n");
return -1;
}
printf(" Active Connections \n\n");
char szLocalAddr[128];
char szRemoteAddr[128];
char szProcessName[128];
in_addr inadLocal, inadRemote;
char strState[128];
DWORD dwRemotePort = 0;
// 打印TCP扩展连接表信息
for(UINT i = 0; i < pTcpExTable->dwNumEntries; ++i)
{
// 状态
switch (pTcpExTable->table[i].dwState)
{
case MIB_TCP_STATE_CLOSED:
strcpy(strState, "CLOSED");
break;
case MIB_TCP_STATE_TIME_WAIT:
strcpy(strState, "TIME_WAIT");
break;
case MIB_TCP_STATE_LAST_ACK:
strcpy(strState, "LAST_ACK");
break;
case MIB_TCP_STATE_CLOSING:
strcpy(strState, "CLOSING");
break;
case MIB_TCP_STATE_CLOSE_WAIT:
strcpy(strState, "CLOSE_WAIT");
break;
case MIB_TCP_STATE_FIN_WAIT1:
strcpy(strState, "FIN_WAIT1");
break;
case MIB_TCP_STATE_ESTAB:
strcpy(strState, "ESTAB");
break;
case MIB_TCP_STATE_SYN_RCVD:
strcpy(strState, "SYN_RCVD");
break;
case MIB_TCP_STATE_SYN_SENT:
strcpy(strState, "SYN_SENT");
break;
case MIB_TCP_STATE_LISTEN:
strcpy(strState, "LISTEN");
break;
case MIB_TCP_STATE_DELETE_TCB:
strcpy(strState, "DELETE");
break;
default:
printf("Error: unknown state!\n");
break;
}
// 本地IP地址
inadLocal.s_addr = pTcpExTable->table[i].dwLocalAddr;
// 远程端口
if(strcmp(strState, "LISTEN") != 0)
{
dwRemotePort = pTcpExTable->table[i].dwRemotePort;
}
else
dwRemotePort = 0;
// 远程IP地址
inadRemote.s_addr = pTcpExTable->table[i].dwRemoteAddr;
sprintf(szLocalAddr, "%s:%u", inet_ntoa(inadLocal),
ntohs((unsigned short)(0x0000FFFF & pTcpExTable->table[i].dwLocalPort)));
sprintf(szRemoteAddr, "%s:%u", inet_ntoa(inadRemote),
ntohs((unsigned short)(0x0000FFFF & dwRemotePort)));
// 打印出此入口的信息
printf("%-5s %s:%d\n State: %s\n", "[TCP]",
ProcessPidToName(hProcessSnap, pTcpExTable->table[i].dwProcessId, szProcessName),
pTcpExTable->table[i].dwProcessId,
strState);
printf(" Local: %s\n Remote: %s\n",
szLocalAddr, szRemoteAddr);
}
// 打印UDP监听表信息
for(i = 0; i < pUdpExTable->dwNumEntries; ++i)
{
// 本地IP地址
inadLocal.s_addr = pUdpExTable->table[i].dwLocalAddr;
sprintf(szLocalAddr, "%s:%u", inet_ntoa(inadLocal),
ntohs((unsigned short)(0x0000FFFF & pUdpExTable->table[i].dwLocalPort)));
// 打印出此入口的信息
printf("%-5s %s:%d\n", "[UDP]",
ProcessPidToName(hProcessSnap, pUdpExTable->table[i].dwProcessId, szProcessName),
pUdpExTable->table[i].dwProcessId );
printf(" Local: %s\n Remote: %s\n",
szLocalAddr, "*.*.*.*:*" );
}
::CloseHandle(hProcessSnap);
::LocalFree(pTcpExTable);
::LocalFree(pUdpExTable);
::FreeLibrary(hModule);
return 0;
}
// 将进程ID号（PID）转化为进程名称
PCHAR ProcessPidToName(HANDLE hProcessSnap, DWORD ProcessId, PCHAR ProcessName)
{
PROCESSENTRY32 processEntry;
processEntry.dwSize = sizeof(processEntry);
// 找不到的话，默认进程名为“???”
strcpy(ProcessName, "???");
if(!::Process32First(hProcessSnap, &processEntry))
return ProcessName;
do
{
if(processEntry.th32ProcessID == ProcessId) // 就是这个进程
{
strcpy(ProcessName, processEntry.szExeFile);
break;
}
}
while(::Process32Next(hProcessSnap, &processEntry));
return ProcessName;
}posted on 2009-05-20 12:22
Aiscanf 阅读(349)
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