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
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
|
namespace System.Web.Services.Protocols {
using System;
using System.Web.Services;
using System.Diagnostics;
using System.Text;
using System.Runtime.InteropServices;
using System.Web.Services.Interop;
using System.Reflection;
using System.Threading;
using System.Security.Permissions;
using System.Net;
using System.ComponentModel; // for CompModSwitches
using System.Web.Services.Diagnostics;
internal class RemoteDebugger : INotifySource2 {
private static INotifyConnection2 connection;
private static bool getConnection = true;
private INotifySink2 notifySink;
private NotifyFilter notifyFilter;
private UserThread userThread;
private const int INPROC_SERVER = 1;
private static Guid IID_NotifyConnectionClassGuid = new Guid("12A5B9F0-7A1C-4fcb-8163-160A30F519B5");
private static Guid IID_NotifyConnection2Guid = new Guid("1AF04045-6659-4aaa-9F4B-2741AC56224B");
private static string debuggerHeader = "VsDebuggerCausalityData";
private static Object s_InternalSyncObject;
private static Object InternalSyncObject {
get {
if (s_InternalSyncObject == null) {
Object o = new Object();
Interlocked.CompareExchange(ref s_InternalSyncObject, o, null);
}
return s_InternalSyncObject;
}
}
[DebuggerStepThrough]
[DebuggerHidden]
internal RemoteDebugger() {
}
~RemoteDebugger() {
Close();
}
internal static bool IsClientCallOutEnabled() {
bool enabled = false;
try {
enabled = !CompModSwitches.DisableRemoteDebugging.Enabled && Debugger.IsAttached && Connection != null;
}
catch (Exception e) {
if (e is ThreadAbortException || e is StackOverflowException || e is OutOfMemoryException) {
throw;
}
if (Tracing.On) Tracing.ExceptionCatch(TraceEventType.Warning, typeof(RemoteDebugger), "IsClientCallOutEnabled", e);
}
return enabled;
}
internal static bool IsServerCallInEnabled(ServerProtocol protocol, out string stringBuffer) {
stringBuffer = null;
bool enabled = false;
try {
if (CompModSwitches.DisableRemoteDebugging.Enabled)
return false;
enabled = protocol.Context.IsDebuggingEnabled && Connection != null;
if (enabled) {
stringBuffer = protocol.Request.Headers[debuggerHeader];
enabled = (stringBuffer != null && stringBuffer.Length > 0);
}
}
catch (Exception e) {
if (e is ThreadAbortException || e is StackOverflowException || e is OutOfMemoryException) {
throw;
}
if (Tracing.On) Tracing.ExceptionCatch(TraceEventType.Warning, typeof(RemoteDebugger), "IsServerCallInEnabled", e);
enabled = false;
}
return enabled;
}
private static INotifyConnection2 Connection {
get {
if (connection == null && getConnection) {
lock (InternalSyncObject) {
if (connection == null) {
AppDomain.CurrentDomain.DomainUnload += new EventHandler(OnAppDomainUnload);
AppDomain.CurrentDomain.ProcessExit += new EventHandler(OnProcessExit);
TraceMethod method = Tracing.On ? new TraceMethod(typeof(RemoteDebugger), "get_Connection") : null;
if (Tracing.On) Tracing.Enter("RemoteDebugger", method);
object unk;
int result = UnsafeNativeMethods.CoCreateInstance(ref IID_NotifyConnectionClassGuid,
null,
INPROC_SERVER,
ref IID_NotifyConnection2Guid,
out unk);
if (Tracing.On) Tracing.Exit("RemoteDebugger", method);
if (result >= 0) // success
connection = (INotifyConnection2)unk;
else
connection = null;
}
getConnection = false;
}
}
return connection;
}
}
private INotifySink2 NotifySink {
get {
if (this.notifySink == null && Connection != null) {
TraceMethod method = Tracing.On ? new TraceMethod(this, "get_NotifySink") : null;
if (Tracing.On) Tracing.Enter("RemoteDebugger", method);
this.notifySink = UnsafeNativeMethods.RegisterNotifySource(Connection, this);
if (Tracing.On) Tracing.Exit("RemoteDebugger", method);
}
return this.notifySink;
}
}
private static void CloseSharedResources() {
if (connection != null) {
lock (InternalSyncObject) {
if (connection != null) {
TraceMethod method = Tracing.On ? new TraceMethod(typeof(RemoteDebugger), "CloseSharedResources") : null;
if (Tracing.On) Tracing.Enter("RemoteDebugger", method);
try {
Marshal.ReleaseComObject(connection);
}
catch (Exception e) {
if (e is ThreadAbortException || e is StackOverflowException || e is OutOfMemoryException) {
throw;
}
if (Tracing.On) Tracing.ExceptionCatch(TraceEventType.Warning, typeof(RemoteDebugger), "CloseSharedResources", e);
}
if (Tracing.On) Tracing.Exit("RemoteDebugger", method);
connection = null;
}
}
}
}
private void Close() {
if (this.notifySink != null && connection != null) {
lock (InternalSyncObject) {
if (this.notifySink != null && connection != null) {
TraceMethod method = Tracing.On ? new TraceMethod(this, "Close") : null;
if (Tracing.On) Tracing.Enter("RemoteDebugger", method);
try {
UnsafeNativeMethods.UnregisterNotifySource(connection, this);
}
catch (Exception e) {
if (e is ThreadAbortException || e is StackOverflowException || e is OutOfMemoryException) {
throw;
}
if (Tracing.On) Tracing.ExceptionCatch(TraceEventType.Warning, method, e);
}
if (Tracing.On) Tracing.Exit("RemoteDebugger", method);
this.notifySink = null;
}
}
}
}
[DebuggerStepThrough]
[DebuggerHidden]
internal void NotifyClientCallOut(WebRequest request) {
try {
if (NotifySink == null) return;
IntPtr bufferPtr;
int bufferSize = 0;
CallId callId = new CallId(null, 0, (IntPtr)0, 0, null, request.RequestUri.Host);
TraceMethod method = Tracing.On ? new TraceMethod(this, "NotifyClientCallOut") : null;
if (Tracing.On) Tracing.Enter("RemoteDebugger", method);
UnsafeNativeMethods.OnSyncCallOut(NotifySink, callId, out bufferPtr, ref bufferSize);
if (Tracing.On) Tracing.Exit("RemoteDebugger", method);
if (bufferPtr == IntPtr.Zero) return;
byte[] buffer = null;
try {
buffer = new byte[bufferSize];
Marshal.Copy(bufferPtr, buffer, 0, bufferSize);
}
finally {
Marshal.FreeCoTaskMem(bufferPtr);
}
string bufferString = Convert.ToBase64String(buffer);
request.Headers.Add(debuggerHeader, bufferString);
}
catch (Exception e) {
if (e is ThreadAbortException || e is StackOverflowException || e is OutOfMemoryException) {
throw;
}
if (Tracing.On) Tracing.ExceptionCatch(TraceEventType.Warning, typeof(RemoteDebugger), "NotifyClientCallOut", e);
}
}
[DebuggerStepThrough]
[DebuggerHidden]
internal void NotifyClientCallReturn(WebResponse response) {
try {
if (NotifySink == null) return;
byte[] buffer = new byte[0];
if (response != null) {
string bufferString = response.Headers[debuggerHeader];
if (bufferString != null && bufferString.Length != 0)
buffer = Convert.FromBase64String(bufferString);
}
CallId callId = new CallId(null, 0, (IntPtr)0, 0, null, null);
TraceMethod method = Tracing.On ? new TraceMethod(this, "NotifyClientCallReturn") : null;
if (Tracing.On) Tracing.Enter("RemoteDebugger", method);
UnsafeNativeMethods.OnSyncCallReturn(NotifySink, callId, buffer, buffer.Length);
if (Tracing.On) Tracing.Exit("RemoteDebugger", method);
}
catch (Exception e) {
if (e is ThreadAbortException || e is StackOverflowException || e is OutOfMemoryException) {
throw;
}
if (Tracing.On) Tracing.ExceptionCatch(TraceEventType.Warning, typeof(RemoteDebugger), "NotifyClientCallReturn", e);
}
this.Close();
}
[DebuggerStepThrough]
[DebuggerHidden]
internal void NotifyServerCallEnter(ServerProtocol protocol, string stringBuffer) {
try {
if (NotifySink == null) return;
StringBuilder methodBuilder = new StringBuilder();
methodBuilder.Append(protocol.Type.FullName);
methodBuilder.Append('.');
methodBuilder.Append(protocol.MethodInfo.Name);
methodBuilder.Append('(');
ParameterInfo[] parameterInfos = protocol.MethodInfo.Parameters;
for (int i = 0; i < parameterInfos.Length; ++i) {
if (i != 0)
methodBuilder.Append(',');
methodBuilder.Append(parameterInfos[i].ParameterType.FullName);
}
methodBuilder.Append(')');
byte[] buffer = Convert.FromBase64String(stringBuffer);
CallId callId = new CallId(null, 0, (IntPtr)0, 0, methodBuilder.ToString(), null);
TraceMethod method = Tracing.On ? new TraceMethod(this, "NotifyServerCallEnter") : null;
if (Tracing.On) Tracing.Enter("RemoteDebugger", method);
UnsafeNativeMethods.OnSyncCallEnter(NotifySink, callId, buffer, buffer.Length);
if (Tracing.On) Tracing.Exit("RemoteDebugger", method);
}
catch (Exception e) {
if (e is ThreadAbortException || e is StackOverflowException || e is OutOfMemoryException) {
throw;
}
if (Tracing.On) Tracing.ExceptionCatch(TraceEventType.Warning, typeof(RemoteDebugger), "NotifyServerCallEnter", e);
}
}
[DebuggerStepThrough]
[DebuggerHidden]
internal void NotifyServerCallExit(HttpResponse response) {
try {
if (NotifySink == null) return;
IntPtr bufferPtr;
int bufferSize = 0;
CallId callId = new CallId(null, 0, (IntPtr)0, 0, null, null);
TraceMethod method = Tracing.On ? new TraceMethod(this, "NotifyServerCallExit") : null;
if (Tracing.On) Tracing.Enter("RemoteDebugger", method);
UnsafeNativeMethods.OnSyncCallExit(NotifySink, callId, out bufferPtr, ref bufferSize);
if (Tracing.On) Tracing.Exit("RemoteDebugger", method);
if (bufferPtr == IntPtr.Zero) return;
byte[] buffer = null;
try {
buffer = new byte[bufferSize];
Marshal.Copy(bufferPtr, buffer, 0, bufferSize);
}
finally {
Marshal.FreeCoTaskMem(bufferPtr);
}
string stringBuffer = Convert.ToBase64String(buffer);
response.AddHeader(debuggerHeader, stringBuffer);
}
catch (Exception e) {
if (e is ThreadAbortException || e is StackOverflowException || e is OutOfMemoryException) {
throw;
}
if (Tracing.On) Tracing.ExceptionCatch(TraceEventType.Warning, typeof(RemoteDebugger), "NotifyServerCallExit", e);
}
this.Close();
}
private static void OnAppDomainUnload(object sender, EventArgs args) {
CloseSharedResources();
}
private static void OnProcessExit(object sender, EventArgs args) {
CloseSharedResources();
}
void INotifySource2.SetNotifyFilter(NotifyFilter in_NotifyFilter, UserThread in_pUserThreadFilter) {
notifyFilter = in_NotifyFilter;
userThread = in_pUserThreadFilter;
}
}
}
|
