-
Notifications
You must be signed in to change notification settings - Fork 12
Expand file tree
/
Copy pathUDPScanner.cs
More file actions
executable file
·228 lines (214 loc) · 9.48 KB
/
Copy pathUDPScanner.cs
File metadata and controls
executable file
·228 lines (214 loc) · 9.48 KB
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Net;
using System.Net.Sockets;
using System.Threading;
namespace ST.Library.Network
{
public class UDPScanner : PortScanner
{
private Socket m_sock;
private Semaphore m_se;
private ProbeConfiger m_configer;
private Queue<UDPScanTaskInfo> m_que_task;
private Queue<SocketAsyncEventArgs> m_que_sae;
private Dictionary<string, UDPScanTaskInfo> m_dic_task_running;
public UDPScanner(int nMaxTask, ProbeConfiger probes) {
m_se = new Semaphore(nMaxTask, nMaxTask);
m_configer = probes;
m_que_sae = new Queue<SocketAsyncEventArgs>();
m_dic_task_running = new Dictionary<string, UDPScanTaskInfo>();
m_que_task = new Queue<UDPScanTaskInfo>();
for (int i = 0; i < nMaxTask; i++) {
UDPScanTaskInfo ti = new UDPScanTaskInfo();
ti.TaskID = (uint)i + 1;
ti.SendDatas = new List<byte[]>();
ti.SendDatasQueue = new Queue<byte[]>();
m_que_task.Enqueue(ti);
}
m_sock = new Socket(AddressFamily.InterNetwork, SocketType.Dgram, ProtocolType.Udp);
m_sock.Bind(new IPEndPoint(IPAddress.Any, 0));
SocketAsyncEventArgs sae = new SocketAsyncEventArgs();
sae.Completed += new EventHandler<SocketAsyncEventArgs>(IO_Completed);
sae.SetBuffer(new byte[65535], 0, 65535);
sae.UserToken = m_sock;
sae.RemoteEndPoint = new IPEndPoint(IPAddress.Any, 0);
if (!m_sock.ReceiveFromAsync(sae)) IOProcessPool.QueueWork(this.ProcessRecv, sae);
new Thread(this.CheckTimeout) { IsBackground = true }.Start();
}
protected override uint OnScan(int nPort, EndPoint endPoint, int nProbes, int nTimeout, int nRetry, int nTotalTimeout, bool bUseNullProbe) {
lock (m_obj_sync) {
if (base._IsDisposed) throw new ObjectDisposedException("UDPScanner", "The scanner was disposed");
}
string strError = string.Empty;
UDPScanTaskInfo ti = null;
m_se.WaitOne();
try {
ti = this.CreateTaskInfo(nPort, endPoint, nProbes, nTimeout, nRetry, nTotalTimeout);
} catch (InvalidOperationException ex) {
strError = ex.Message;
}
string strKey = endPoint.ToString();
lock (m_dic_task_running) {
if (m_dic_task_running.ContainsKey(strKey))
strError = "The task has running";
else
m_dic_task_running.Add(strKey, ti);
}
if (strError != string.Empty) {
this.EndTask(null, new ScanEventArgs(0, endPoint, strError));
return 0;
}
ti.StartTime = DateTime.Now;
this.SendData(ti);
//ti.IsStarted = true;
return ti.TaskID;
}
private void SendData(UDPScanTaskInfo ti) {
SocketAsyncEventArgs sae = this.PopSAE();
byte[] byData = ti.SendDatasQueue.Dequeue();
if (sae.Buffer.Length < byData.Length)
sae.SetBuffer(new byte[byData.Length], 0, byData.Length);
Array.Copy(byData, sae.Buffer, byData.Length);
sae.SetBuffer(0, byData.Length);
ti.LastTime = DateTime.Now;
sae.RemoteEndPoint = ti.EndPoint;
if (!m_sock.SendToAsync(sae)) IOProcessPool.QueueWork(this.ProcessSend, sae);
}
private SocketAsyncEventArgs PopSAE() {
lock (m_obj_sync) {
if (m_que_sae.Count != 0) return m_que_sae.Dequeue();
}
SocketAsyncEventArgs sae = new SocketAsyncEventArgs();
sae.Completed += new EventHandler<SocketAsyncEventArgs>(IO_Completed);
sae.SetBuffer(new byte[2048], 0, 2048);
return sae;
}
private void PushSAE(SocketAsyncEventArgs sae) {
lock (m_obj_sync) {
if (base._IsDisposed) return;
m_que_sae.Enqueue(sae);
}
}
private UDPScanTaskInfo CreateTaskInfo(int nPort, EndPoint endPoint, int nProbes, int nTimeout, int nRetry, int nTotalTimeout) {
UDPScanTaskInfo ti = null;
lock (m_obj_sync) {
ti = m_que_task.Dequeue();
}
ti.Retry = nRetry;
ti.RunedRetry = 0;
ti.Port = nPort;
ti.EndPoint = endPoint;
ti.IsStarted = false;
ti.Timeout = nTimeout;
ti.TotalTimeout = nTotalTimeout;
Queue<ProbeInfo> pi = null;
if (nProbes < 0)
pi = m_configer.GetProbesQueue(ProbeType.Udp, nPort, 0);
else
pi = m_configer.GetProbesQueue(ProbeType.Udp, nPort, nProbes);
if (pi.Count == 0)
throw new InvalidOperationException("Can not match the probes whith port [" + nPort + "]");
ti.SendDatas.Clear();
ti.SendDatasQueue.Clear();
foreach (var v in pi) {
ti.SendDatas.Add(v.Data);
ti.SendDatasQueue.Enqueue(v.Data);
}
return ti;
}
void IO_Completed(object sender, SocketAsyncEventArgs e) {
switch (e.LastOperation) {
case SocketAsyncOperation.SendTo:
this.ProcessSend(e);
break;
case SocketAsyncOperation.ReceiveFrom:
this.ProcessRecv(e);
break;
}
}
private void ProcessSend(SocketAsyncEventArgs e) {
string strKey = e.RemoteEndPoint.ToString();
this.PushSAE(e);
UDPScanTaskInfo ti = null;
lock (m_dic_task_running) {
if (!m_dic_task_running.ContainsKey(strKey)) return;
ti = m_dic_task_running[strKey];
}
ti.LastTime = DateTime.Now;
if (ti.SendDatasQueue.Count != 0) this.SendData(ti);
else ti.IsStarted = true;
}
private void ProcessRecv(SocketAsyncEventArgs e) {
Socket sock = e.UserToken as Socket;
if (e.SocketError == SocketError.Success && e.BytesTransferred > 0) {
//add code
bool bOK = true;
UDPScanTaskInfo ti = null;
string strKey = e.RemoteEndPoint.ToString();
lock (m_dic_task_running) {
if (!m_dic_task_running.ContainsKey(strKey)) bOK = false;
else {
ti = m_dic_task_running[strKey];
ti.IsStarted = false;
m_dic_task_running.Remove(strKey);
}
}
if (bOK) {
MatchResult mr = m_configer.MatchData(e.Buffer, e.BytesTransferred, ((IPEndPoint)e.RemoteEndPoint).Port, ProbeType.Udp);
this.EndTask(ti, new ScanEventArgs(ti.TaskID, ti.EndPoint, mr.Name, mr.RegexLine, mr.DataString, e.Buffer, e.BytesTransferred));
}
}
if (!sock.ReceiveFromAsync(e)) this.ProcessRecv(e);
}
private void EndTask(UDPScanTaskInfo ti, ScanEventArgs e) {
//ti.IsStarted = false;
if (ti != null) {
ti.IsStarted = false;
lock (m_que_task) m_que_task.Enqueue(ti);
}
base.OnCompleted(e);
m_se.Release();
}
private void CheckTimeout() {
DateTime dt = DateTime.Now;
//List<UDPScanTaskInfo> lst_remove = new List<UDPScanTaskInfo>();
HashSet<UDPScanTaskInfo> hs = new HashSet<UDPScanTaskInfo>();
while (true) {
Thread.Sleep(1000);
hs.Clear();
dt = DateTime.Now;
bool bDisposed = base._IsDisposed;
lock (m_dic_task_running) {
foreach (var v in m_dic_task_running) {
if (!v.Value.IsStarted) continue;
if (dt.Subtract(v.Value.StartTime).TotalMilliseconds > v.Value.TotalTimeout || bDisposed) {
hs.Add(v.Value);
continue;
}
if (dt.Subtract(v.Value.LastTime).TotalMilliseconds > v.Value.Timeout) {
if (v.Value.Retry-- != 0) {
v.Value.IsStarted = false;
foreach (var d in v.Value.SendDatas) v.Value.SendDatasQueue.Enqueue(d);
this.SendData(v.Value);
} else hs.Add(v.Value);
}
}
foreach (var v in hs) {
this.EndTask(v, new ScanEventArgs(v.TaskID, v.EndPoint, "Timeout"));
m_dic_task_running.Remove(v.EndPoint.ToString());
}
}
if (bDisposed) break;
}
}
public override void Dispose() {
lock (m_obj_sync) {
if (base._IsDisposed) return;
base._IsDisposed = true;
}
}
}
}