다음은 "윈도우 환경에서 특정 포트를 리슨하고 있는, 프로세스의 정보 조회 방법"에 대해서 설명하고 있습니다.
#pragma comment(lib, "ws2_32.lib")
#include <winsock2.h>
#include <ws2tcpip.h>
#include <windows.h>
#include <tchar.h>
#include <stdio.h>
#include <string.h>
#if defined NTDDI_VERSION && (NTDDI_VERSION >= NTDDI_LONGHORN)
# include <Iphlpapi.h>
/* Windows Vista Higher */
#else
# ifndef ANY_SIZE
# define ANY_SIZE 1
# endif
/* for Windows 2K, Windows XP, Windows 2003 */
typedef struct _MIB_TCPROW_OWNER_PID
{
DWORD dwState;
DWORD dwLocalAddr;
DWORD dwLocalPort;
DWORD dwRemoteAddr;
DWORD dwRemotePort;
DWORD dwOwningPid;
} MIB_TCPROW_OWNER_PID, *PMIB_TCPROW_OWNER_PID;
typedef struct _MIB_TCPTABLE_OWNER_PID
{
DWORD dwNumEntries;
MIB_TCPROW_OWNER_PID table[ANY_SIZE];
} MIB_TCPTABLE_OWNER_PID, *PMIB_TCPTABLE_OWNER_PID;
typedef struct _MIB_TCP6ROW_OWNER_PID
{
UCHAR ucLocalAddr[16];
DWORD dwLocalScopeId;
DWORD dwLocalPort;
UCHAR ucRemoteAddr[16];
DWORD dwRemoteScopeId;
DWORD dwRemotePort;
DWORD dwState;
DWORD dwOwningPid;
} MIB_TCP6ROW_OWNER_PID, *PMIB_TCP6ROW_OWNER_PID;
typedef struct _MIB_TCP6TABLE_OWNER_PID
{
DWORD dwNumEntries;
MIB_TCP6ROW_OWNER_PID table[ANY_SIZE];
} MIB_TCP6TABLE_OWNER_PID, *PMIB_TCP6TABLE_OWNER_PID;
typedef struct _MIB_UDPROW_OWNER_PID {
DWORD dwLocalAddr;
DWORD dwLocalPort;
DWORD dwOwningPid;
} MIB_UDPROW_OWNER_PID, *PMIB_UDPROW_OWNER_PID;
typedef struct _MIB_UDPTABLE_OWNER_PID
{
DWORD dwNumEntries;
MIB_UDPROW_OWNER_PID table[ANY_SIZE];
} MIB_UDPTABLE_OWNER_PID, *PMIB_UDPTABLE_OWNER_PID;
typedef struct _MIB_UDP6ROW_OWNER_PID {
UCHAR ucLocalAddr[16];
DWORD dwLocalScopeId;
DWORD dwLocalPort;
DWORD dwOwningPid;
} MIB_UDP6ROW_OWNER_PID, *PMIB_UDP6ROW_OWNER_PID;
typedef struct _MIB_UDP6TABLE_OWNER_PID
{
DWORD dwNumEntries;
MIB_UDP6ROW_OWNER_PID table[ANY_SIZE];
} MIB_UDP6TABLE_OWNER_PID, *PMIB_UDP6TABLE_OWNER_PID;
typedef enum _TCP_TABLE_CLASS {
TCP_TABLE_BASIC_LISTENER,
TCP_TABLE_BASIC_CONNECTIONS,
TCP_TABLE_BASIC_ALL,
TCP_TABLE_OWNER_PID_LISTENER,
TCP_TABLE_OWNER_PID_CONNECTIONS,
TCP_TABLE_OWNER_PID_ALL,
TCP_TABLE_OWNER_MODULE_LISTENER,
TCP_TABLE_OWNER_MODULE_CONNECTIONS,
TCP_TABLE_OWNER_MODULE_ALL
} TCP_TABLE_CLASS, *PTCP_TABLE_CLASS;
typedef enum _UDP_TABLE_CLASS {
UDP_TABLE_BASIC,
UDP_TABLE_OWNER_PID,
UDP_TABLE_OWNER_MODULE
} UDP_TABLE_CLASS, *PUDP_TABLE_CLASS;
typedef enum {
MIB_TCP_STATE_CLOSED = 1,
MIB_TCP_STATE_LISTEN = 2,
MIB_TCP_STATE_SYN_SENT = 3,
MIB_TCP_STATE_SYN_RCVD = 4,
MIB_TCP_STATE_ESTAB = 5,
MIB_TCP_STATE_FIN_WAIT1 = 6,
MIB_TCP_STATE_FIN_WAIT2 = 7,
MIB_TCP_STATE_CLOSE_WAIT = 8,
MIB_TCP_STATE_CLOSING = 9,
MIB_TCP_STATE_LAST_ACK = 10,
MIB_TCP_STATE_TIME_WAIT = 11,
MIB_TCP_STATE_DELETE_TCB = 12,
} MIB_TCP_STATE;
#endif
typedef struct _MIB_TCPROW_EX
{
DWORD dwState;
DWORD dwLocalAddr;
DWORD dwLocalPort;
DWORD dwRemoteAddr;
DWORD dwRemotePort;
DWORD dwProcessId;
} MIB_TCPROW_EX, *PMIB_TCPROW_EX;
typedef struct _MIB_TCPTABLE_EX
{
DWORD dwNumEntries;
MIB_TCPROW_EX table[ANY_SIZE];
} MIB_TCPTABLE_EX, *PMIB_TCPTABLE_EX;
typedef struct _MIB_TCP6ROW_EX {
UCHAR ucLocalAddr[16];
DWORD dwLocalScopeId;
DWORD dwLocalPort;
UCHAR ucRemoteAddr[16];
DWORD dwRemoteScopeId;
DWORD dwRemotePort;
DWORD dwState;
DWORD dwProcessId;
} MIB_TCP6ROW_EX, *PMIB_TCP6ROW_EX;
typedef struct _MIB_TCP6TABLE_EX {
DWORD dwNumEntries;
MIB_TCP6ROW_EX table[ANY_SIZE];
} MIB_TCP6TABLE_EX, *PMIB_TCP6TABLE_EX;
typedef struct _MIB_UDPROW_EX
{
DWORD dwLocalAddr;
DWORD dwLocalPort;
DWORD dwProcessId;
} MIB_UDPROW_EX, *PMIB_UDPROW_EX;
typedef struct _MIB_UDPTABLE_EX
{
DWORD dwNumEntries;
MIB_UDPROW_EX table[ANY_SIZE];
} MIB_UDPTABLE_EX, *PMIB_UDPTABLE_EX;
typedef struct _MIB_UDP6ROW_EX {
UCHAR ucLocalAddr[16];
DWORD dwLocalScopeId;
DWORD dwLocalPort;
DWORD dwProcessId;
} MIB_UDP6ROW_EX, *PMIB_UDP6ROW_EX;
typedef struct _MIB_UDP6TABLE_EX {
DWORD dwNumEntries;
MIB_UDP6ROW_EX table[ANY_SIZE];
} MIB_UDP6TABLE_EX, *PMIB_UDP6TABLE_EX;
typedef DWORD (WINAPI *GetExtendedTcpTable_t)(PVOID pTcpTable, PDWORD pdwSize, BOOL bOrder, ULONG ulAf, TCP_TABLE_CLASS TableClass, ULONG Reserved);
typedef DWORD (WINAPI *GetExtendedUdpTable_t)(PVOID pUdpTable, PDWORD pdwSize, BOOL bOrder, ULONG ulAf, UDP_TABLE_CLASS TableClass, ULONG Reserved);
typedef DWORD (WINAPI *AllocateAndGetTcpExTableFromStack_t)(PVOID *ppTcpTable, BOOL bOrder, HANDLE hHeap, DWORD dwFlags, DWORD dwFamily);
typedef DWORD (WINAPI *AllocateAndGetUdpExTableFromStack_t)(PVOID *ppUDPTable, BOOL bOrder, HANDLE hHeap, DWORD dwFlags, DWORD dwFamily);
int NetStat();
int NetStatEx();
BOOL IsVista();
int main(int argc, char **argv)
{
return ( IsVista() ) ? NetStatEx() : NetStat();
}
BOOL IsVista()
{
OSVERSIONINFO osver;
osver.dwOSVersionInfoSize = sizeof( OSVERSIONINFO );
if ( GetVersionEx (&osver) )
{
if ( osver.dwPlatformId == VER_PLATFORM_WIN32_NT && (osver.dwMajorVersion >= 6 ) )
return TRUE;
}
return FALSE;
}
int NetStatEx()
{
DWORD i = 0, dwRet = 0;
DWORD dwTcpSize = 0, dwTcp6Size = 0;
DWORD dwUdpSize = 0, dwUdp6Size = 0;
MIB_TCPTABLE_OWNER_PID *pTcp = NULL;
MIB_TCP6TABLE_OWNER_PID *pTcp6 = NULL;
MIB_UDPTABLE_OWNER_PID *pUdp = NULL;
MIB_UDP6TABLE_OWNER_PID *pUdp6 = NULL;
GetExtendedTcpTable_t GetExtendedTcpTable;
GetExtendedUdpTable_t GetExtendedUdpTable;
HMODULE hDLL = NULL;
if ( (hDLL = LoadLibrary("Iphlpapi.dll")) == NULL )
{
printf("fail to LoadLibrary 'Iphlpapi.dll'\n");
return -1;
}
GetExtendedTcpTable = (GetExtendedTcpTable_t)GetProcAddress(hDLL, "GetExtendedTcpTable");
GetExtendedUdpTable = (GetExtendedUdpTable_t)GetProcAddress(hDLL, "GetExtendedUdpTable");
dwRet = GetExtendedTcpTable(NULL, &dwTcpSize, TRUE, AF_INET, TCP_TABLE_OWNER_PID_ALL, 0);
dwRet = GetExtendedTcpTable(NULL, &dwTcp6Size, TRUE, AF_INET6, TCP_TABLE_OWNER_PID_ALL, 0);
dwRet = GetExtendedUdpTable(NULL, &dwUdpSize, TRUE, AF_INET, UDP_TABLE_OWNER_PID, 0);
dwRet = GetExtendedUdpTable(NULL, &dwUdp6Size, TRUE, AF_INET6, UDP_TABLE_OWNER_PID, 0);
pTcp = (MIB_TCPTABLE_OWNER_PID *)malloc(dwTcpSize);
pTcp6 = (MIB_TCP6TABLE_OWNER_PID *)malloc(dwTcp6Size);
pUdp = (MIB_UDPTABLE_OWNER_PID *)malloc(dwUdpSize);
pUdp6 = (MIB_UDP6TABLE_OWNER_PID *)malloc(dwUdp6Size);
dwRet = GetExtendedTcpTable(pTcp, &dwTcpSize, TRUE, AF_INET, TCP_TABLE_OWNER_PID_ALL, 0);
dwRet = GetExtendedTcpTable(pTcp6, &dwTcp6Size, TRUE, AF_INET6, TCP_TABLE_OWNER_PID_ALL, 0);
dwRet = GetExtendedUdpTable(pUdp, &dwUdpSize, TRUE, AF_INET, UDP_TABLE_OWNER_PID, 0);
dwRet = GetExtendedUdpTable(pUdp6, &dwUdp6Size, TRUE, AF_INET6, UDP_TABLE_OWNER_PID, 0);
for ( i = 0; i < pTcp->dwNumEntries; i++ )
{
printf("IPv4 TCP Port %-10d ", ntohs( (u_short)pTcp->table[i].dwLocalPort));
printf("Owner process id %d\n", pTcp->table[i].dwOwningPid);
}
for ( i = 0; i < pTcp6->dwNumEntries; i++ )
{
printf("IPv6 TCP Port %-10d ", ntohs( (u_short)pTcp6->table[i].dwLocalPort));
printf("Owner process id %d\n", pTcp6->table[i].dwOwningPid);
}
for ( i = 0; i < pUdp->dwNumEntries; i++ )
{
printf("IPv4 UDP Port %-10d ", ntohs( (u_short)pUdp->table[i].dwLocalPort));
printf("Owner process id %d\n", pUdp->table[i].dwOwningPid);
}
for ( i = 0; i < pUdp6->dwNumEntries; i++ )
{
printf("IPv6 UDP Port %-10d ", ntohs( (u_short)pUdp6->table[i].dwLocalPort));
printf("Owner process id %d\n", pUdp6->table[i].dwOwningPid);
}
if ( pTcp )
free(pTcp);
if ( pTcp6 )
free(pTcp6);
if ( pUdp )
free(pUdp);
if ( pUdp6 )
free(pUdp6);
FreeLibrary(hDLL);
return 0;
}
int NetStat()
{
DWORD i = 0;
HMODULE hDLL = NULL;
HANDLE hHeap = NULL;
PMIB_TCPTABLE_EX pTcp = NULL;
PMIB_UDPTABLE_EX pUdp = NULL;
PMIB_TCP6TABLE_EX pTcp6 = NULL;
PMIB_UDP6TABLE_EX pUdp6 = NULL;
AllocateAndGetTcpExTableFromStack_t AllocateAndGetTcpExTableFromStack = NULL;
AllocateAndGetUdpExTableFromStack_t AllocateAndGetUdpExTableFromStack = NULL;
hHeap = GetProcessHeap();
if ( (hDLL = LoadLibrary("iphlpapi.dll")) == NULL )
return -1;
if ( (AllocateAndGetTcpExTableFromStack = (AllocateAndGetTcpExTableFromStack_t)GetProcAddress(hDLL, "AllocateAndGetTcpExTableFromStack")) == NULL )
return -1;
if ( (AllocateAndGetUdpExTableFromStack = (AllocateAndGetUdpExTableFromStack_t)GetProcAddress(hDLL,"AllocateAndGetUdpExTableFromStack")) == NULL )
return -1;
if ( AllocateAndGetTcpExTableFromStack((PVOID *)&pTcp, TRUE, hHeap, 0, AF_INET) == NO_ERROR )
{
for ( i = 0; i < pTcp->dwNumEntries; i++ )
{
printf("IPv4 TCP Port %-10d ", ntohs( (u_short)pTcp->table[i].dwLocalPort));
printf("Owner process id %d\n", pTcp->table[i].dwProcessId);
}
}
if ( AllocateAndGetTcpExTableFromStack((PVOID *)&pTcp6, TRUE, hHeap, 0, AF_INET6) == NO_ERROR )
{
for ( i = 0; i < pTcp6->dwNumEntries; i++ )
{
printf("IPv6 TCP Port %-10d ", ntohs( (u_short)pTcp6->table[i].dwLocalPort));
printf("Owner process id %d\n", pTcp6->table[i].dwProcessId);
}
}
if ( AllocateAndGetUdpExTableFromStack((PVOID *)&pUdp, TRUE, hHeap, 0, AF_INET) == NO_ERROR )
{
for ( i = 0; i < pUdp->dwNumEntries; i++ )
{
printf("IPv4 UDP Port %-10d ", ntohs( (u_short)pUdp->table[i].dwLocalPort));
printf("Owner process id %d\n", pUdp->table[i].dwProcessId);
}
}
if ( AllocateAndGetUdpExTableFromStack((PVOID *)&pUdp6, TRUE, hHeap, 0, AF_INET6) == NO_ERROR )
{
for ( i = 0; i < pUdp6->dwNumEntries; i++ )
{
printf("IPv6 UDP Port %-10d ", ntohs( (u_short)pUdp6->table[i].dwLocalPort));
printf("Owner process id %d\n", pUdp6->table[i].dwProcessId);
}
}
if ( pTcp )
HeapFree(hHeap, 0, pTcp);
if ( pUdp )
HeapFree(hHeap, 0, pUdp);
if ( pTcp6 )
HeapFree(hHeap, 0, pTcp6);
if ( pUdp6 )
HeapFree(hHeap, 0, pUdp6);
FreeLibrary(hDLL);
return 0;
}
※ 설명의 편의상 예외처리를 거의 하지 않았으니, 가져다 쓰실때에는 꼭 예외처리 추가하는 센스 !!! 잊지마세요~~
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