作者:jyu1221(天同)
QQ：19632995
MSN：jyu1221@hotmail.com
因广大VB爱好者开发捕获IP数据包的需要，我花了一个下午的工夫，终于把它整里出来了，由于时间关系，以下的数据分析部分写的不是很详细。以下代码在WIN98+VB6.0上测试通过，主函数部分比较简单，1。打开设备驱动程序，2。绑定网卡，3。设置捕获数据，4。循环截获IP包。
由于在WIN98下捕获IP数据包，必须要使用VXD技术，它不像WIN2000（可以参照前二天写的，“使用VB捕获WIN2000下的IP数据包”），捕获IP数据包不需要VXD文件，单单只要使用VB就可以了。因为编写VXD的步骤比较麻烦，在以下的源代码中，直接使用IPMAN中的VPACKET.VXD这个驱动程序。可以在网上比较容易得到，需要的朋友也可以跟我联系。以下包含了截获数据包的所有源代码，只要把下面的代码放到一个模块（.BAS）文件中就可以了，里面信息截获到以后，并没有对数据做太多的处理，所有的数据都放在OutBuff数组中，只是简单的分离出了以太网头部m_EtherPacketHead，IP包头部m_IPPacketHead，其中程序中只是简单的输出了源IP地址，目的IP地址，需要更进一不分析里面的内容，可以参照别的资料。在这里为了程序尽量的简单，所以不过多的牵涉。进一步分析的内容可以添加到输出内容的附近代码就可以了。
'--------源代码开始，放到.bas中即可以测试----------
Private Declare Function CloseHandle Lib "kernel32" (ByVal hObject As Long) As Long
Private Declare Function CreateFile Lib "kernel32" Alias "CreateFileA" (ByVal lpFileName As String, ByVal dwDesiredAccess As Long, ByVal dwShareMode As Long, lpSecurityAttributes As Long, ByVal dwCreationDisposition As Long, ByVal dwFlagsAndAttributes As Long, ByVal hTemplateFile As Long) As Long
Private Declare Function CreateEvent Lib "kernel32" Alias "CreateEventA" (ByVal lpEventAttributes As Long, ByVal bManualReset As Long, ByVal bInitialState As Long, ByVal lpName As String) As Long
Private Declare Function WaitForMultipleObjectsEx Lib "kernel32" (ByVal nCount As Long, lpHandles As Long, ByVal bWaitAll As Long, ByVal dwMilliseconds As Long, ByVal bAlertable As Long) As Long
Private Const INFINITE = &HFFFF
Private Const GENERIC_WRITE = &H40000000
Private Const GENERIC_READ = &H80000000
Private Const OPEN_EXISTING = 3
Private Const FILE_ATTRIBUTE_NORMAL = &H80
Private Const FILE_FLAG_OVERLAPPED = &H40000000
Private Const FILE_FLAG_DELETE_ON_CLOSE = &H4000000
Private Const ERROR_IO_INCOMPLETE = 996&
Private Const NDIS_PACKET_TYPE_DIRECTED = &H1
Private Const IOCTL_PROTOCOL_SET_OID = &H80000004
Private Const IOCTL_PROTOCOL_READ = &H80000010
Private Const OID_GEN_CURRENT_PACKET_FILTER = &H1010E
Private Const WAIT_FAILED = -1
Private Type OVERLAPPED
Internal As Long
InternalHigh As Long
offset As Long
OffsetHigh As Long
hEvent As Long
End Type
Type EtherAddr
AddrByte1 As Byte
AddrByte2 As Byte
AddrByte3 As Byte
AddrByte4 As Byte
AddrByte5 As Byte
AddrByte6 As Byte
End Type
Type EtherPacketHead
DestEther As EtherAddr
SourEther As EtherAddr
ServType As Integer
End Type
Type IPAddr
AddrByte(0 To 3) As Byte
End Type
Type IPPacketHead
VerHLen As Byte
Type1 As Byte
TtlLen As Integer
Id As Integer
FlgOff As Integer
TTL As Byte
Proto As Byte
&nb
[1] [2] [3] [4] [5] [6] [7] 下一页
 网友评论：（评论内容只代表网友观点，与本站立场无关！） |
- GOOGLE广告
阅读排行
|
