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
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
|
//-----------------------------------------------------------------------------
// Copyright (c) Microsoft Corporation. All rights reserved.
//-----------------------------------------------------------------------------
namespace System.ServiceModel.Dispatcher
{
using System.IO;
using System.Runtime;
using System.ServiceModel;
using System.ServiceModel.Channels;
using System.ServiceModel.Description;
using System.ServiceModel.Diagnostics;
using System.Xml;
class StreamFormatter
{
string wrapperName;
string wrapperNS;
string partName;
string partNS;
int streamIndex;
bool isRequest;
string operationName;
const int returnValueIndex = -1;
internal static StreamFormatter Create(MessageDescription messageDescription, string operationName, bool isRequest)
{
MessagePartDescription streamPart = ValidateAndGetStreamPart(messageDescription, isRequest, operationName);
if (streamPart == null)
return null;
return new StreamFormatter(messageDescription, streamPart, operationName, isRequest);
}
StreamFormatter(MessageDescription messageDescription, MessagePartDescription streamPart, string operationName, bool isRequest)
{
if ((object)streamPart == (object)messageDescription.Body.ReturnValue)
this.streamIndex = returnValueIndex;
else
this.streamIndex = streamPart.Index;
wrapperName = messageDescription.Body.WrapperName;
wrapperNS = messageDescription.Body.WrapperNamespace;
partName = streamPart.Name;
partNS = streamPart.Namespace;
this.isRequest = isRequest;
this.operationName = operationName;
}
internal void Serialize(XmlDictionaryWriter writer, object[] parameters, object returnValue)
{
Stream streamValue = GetStreamAndWriteStartWrapperIfNecessary(writer, parameters, returnValue);
writer.WriteValue(new OperationStreamProvider(streamValue));
WriteEndWrapperIfNecessary(writer);
}
Stream GetStreamAndWriteStartWrapperIfNecessary(XmlDictionaryWriter writer, object[] parameters, object returnValue)
{
Stream streamValue = GetStreamValue(parameters, returnValue);
if (streamValue == null)
throw DiagnosticUtility.ExceptionUtility.ThrowHelperArgumentNull(partName);
if (WrapperName != null)
writer.WriteStartElement(WrapperName, WrapperNamespace);
writer.WriteStartElement(PartName, PartNamespace);
return streamValue;
}
void WriteEndWrapperIfNecessary(XmlDictionaryWriter writer)
{
writer.WriteEndElement();
if (wrapperName != null)
writer.WriteEndElement();
}
internal IAsyncResult BeginSerialize(XmlDictionaryWriter writer, object[] parameters, object returnValue, AsyncCallback callback, object state)
{
return new SerializeAsyncResult(this, writer, parameters, returnValue, callback, state);
}
public void EndSerialize(IAsyncResult result)
{
SerializeAsyncResult.End(result);
}
class SerializeAsyncResult : AsyncResult
{
static AsyncCompletion handleEndSerialize = new AsyncCompletion(HandleEndSerialize);
StreamFormatter streamFormatter;
XmlDictionaryWriter writer;
internal SerializeAsyncResult(StreamFormatter streamFormatter, XmlDictionaryWriter writer, object[] parameters, object returnValue,
AsyncCallback callback, object state)
: base(callback, state)
{
this.streamFormatter = streamFormatter;
this.writer = writer;
bool completeSelf = true;
Stream streamValue = streamFormatter.GetStreamAndWriteStartWrapperIfNecessary(writer, parameters, returnValue);
IAsyncResult result = writer.WriteValueAsync(new OperationStreamProvider(streamValue)).AsAsyncResult(PrepareAsyncCompletion(handleEndSerialize), this);
completeSelf = SyncContinue(result);
// Note: The current task implementation hard codes the "IAsyncResult.CompletedSynchronously" property to false, so this fast path will never
// be hit, and we will always hop threads. CSDMain #210220
if (completeSelf)
{
Complete(true);
}
}
static bool HandleEndSerialize(IAsyncResult result)
{
SerializeAsyncResult thisPtr = (SerializeAsyncResult)result.AsyncState;
thisPtr.streamFormatter.WriteEndWrapperIfNecessary(thisPtr.writer);
return true;
}
public static void End(IAsyncResult result)
{
AsyncResult.End<SerializeAsyncResult>(result);
}
}
internal void Deserialize(object[] parameters, ref object retVal, Message message)
{
SetStreamValue(parameters, ref retVal, new MessageBodyStream(message, WrapperName, WrapperNamespace, PartName, PartNamespace, isRequest));
}
internal string WrapperName
{
get { return wrapperName; }
set { wrapperName = value; }
}
internal string WrapperNamespace
{
get { return wrapperNS; }
set { wrapperNS = value; }
}
internal string PartName
{
get { return partName; }
}
internal string PartNamespace
{
get { return partNS; }
}
Stream GetStreamValue(object[] parameters, object returnValue)
{
if (streamIndex == returnValueIndex)
return (Stream)returnValue;
return (Stream)parameters[streamIndex];
}
void SetStreamValue(object[] parameters, ref object returnValue, Stream streamValue)
{
if (streamIndex == returnValueIndex)
returnValue = streamValue;
else
parameters[streamIndex] = streamValue;
}
static MessagePartDescription ValidateAndGetStreamPart(MessageDescription messageDescription, bool isRequest, string operationName)
{
MessagePartDescription part = GetStreamPart(messageDescription);
if (part != null)
return part;
if (HasStream(messageDescription))
{
if (messageDescription.IsTypedMessage)
throw DiagnosticUtility.ExceptionUtility.ThrowHelperError(new InvalidOperationException(SR.GetString(SR.SFxInvalidStreamInTypedMessage, messageDescription.MessageName)));
else if (isRequest)
throw DiagnosticUtility.ExceptionUtility.ThrowHelperError(new InvalidOperationException(SR.GetString(SR.SFxInvalidStreamInRequest, operationName)));
else
throw DiagnosticUtility.ExceptionUtility.ThrowHelperError(new InvalidOperationException(SR.GetString(SR.SFxInvalidStreamInResponse, operationName)));
}
return null;
}
private static bool HasStream(MessageDescription messageDescription)
{
if (messageDescription.Body.ReturnValue != null && messageDescription.Body.ReturnValue.Type == typeof(Stream))
return true;
foreach (MessagePartDescription part in messageDescription.Body.Parts)
{
if (part.Type == typeof(Stream))
return true;
}
return false;
}
static MessagePartDescription GetStreamPart(MessageDescription messageDescription)
{
if (OperationFormatter.IsValidReturnValue(messageDescription.Body.ReturnValue))
{
if (messageDescription.Body.Parts.Count == 0)
if (messageDescription.Body.ReturnValue.Type == typeof(Stream))
return messageDescription.Body.ReturnValue;
}
else
{
if (messageDescription.Body.Parts.Count == 1)
if (messageDescription.Body.Parts[0].Type == typeof(Stream))
return messageDescription.Body.Parts[0];
}
return null;
}
internal static bool IsStream(MessageDescription messageDescription)
{
return GetStreamPart(messageDescription) != null;
}
internal class MessageBodyStream : Stream
{
Message message;
XmlDictionaryReader reader;
long position;
string wrapperName, wrapperNs;
string elementName, elementNs;
bool isRequest;
internal MessageBodyStream(Message message, string wrapperName, string wrapperNs, string elementName, string elementNs, bool isRequest)
{
this.message = message;
this.position = 0;
this.wrapperName = wrapperName;
this.wrapperNs = wrapperNs;
this.elementName = elementName;
this.elementNs = elementNs;
this.isRequest = isRequest;
}
public override int Read(byte[] buffer, int offset, int count)
{
EnsureStreamIsOpen();
if (buffer == null)
throw TraceUtility.ThrowHelperError(new ArgumentNullException("buffer"), this.message);
if (offset < 0)
throw TraceUtility.ThrowHelperError(new ArgumentOutOfRangeException("offset", offset,
SR.GetString(SR.ValueMustBeNonNegative)), this.message);
if (count < 0)
throw TraceUtility.ThrowHelperError(new ArgumentOutOfRangeException("count", count,
SR.GetString(SR.ValueMustBeNonNegative)), this.message);
if (buffer.Length - offset < count)
throw TraceUtility.ThrowHelperError(new ArgumentException(SR.GetString(SR.SFxInvalidStreamOffsetLength, offset + count)), this.message);
try
{
if (reader == null)
{
reader = message.GetReaderAtBodyContents();
if (wrapperName != null)
{
reader.MoveToContent();
reader.ReadStartElement(wrapperName, wrapperNs);
}
reader.MoveToContent();
if (reader.NodeType == XmlNodeType.EndElement)
{
return 0;
}
reader.ReadStartElement(elementName, elementNs);
}
if (reader.MoveToContent() != XmlNodeType.Text)
{
Exhaust(reader);
return 0;
}
int bytesRead = reader.ReadContentAsBase64(buffer, offset, count);
position += bytesRead;
if (bytesRead == 0)
{
Exhaust(reader);
}
return bytesRead;
}
catch (Exception ex)
{
if (Fx.IsFatal(ex))
throw;
throw DiagnosticUtility.ExceptionUtility.ThrowHelperError(new IOException(SR.GetString(SR.SFxStreamIOException), ex));
}
}
private void EnsureStreamIsOpen()
{
if (message.State == MessageState.Closed)
throw DiagnosticUtility.ExceptionUtility.ThrowHelperError(new ObjectDisposedException(SR.GetString(
isRequest ? SR.SFxStreamRequestMessageClosed : SR.SFxStreamResponseMessageClosed)));
}
static void Exhaust(XmlDictionaryReader reader)
{
if (reader != null)
{
while (reader.Read())
{
// drain
}
}
}
public override long Position
{
get
{
EnsureStreamIsOpen();
return position;
}
set { throw TraceUtility.ThrowHelperError(new NotSupportedException(), message); }
}
public override void Close()
{
message.Close();
if (reader != null)
{
reader.Close();
reader = null;
}
base.Close();
}
public override bool CanRead { get { return message.State != MessageState.Closed; } }
public override bool CanSeek { get { return false; } }
public override bool CanWrite { get { return false; } }
public override long Length
{
get
{
#pragma warning suppress 56503 // [....], not a seekable stream, it is ok to throw NotSupported in this case
throw TraceUtility.ThrowHelperError(new NotSupportedException(), this.message);
}
}
public override void Flush() { throw TraceUtility.ThrowHelperError(new NotSupportedException(), this.message); }
public override long Seek(long offset, SeekOrigin origin) { throw TraceUtility.ThrowHelperError(new NotSupportedException(), this.message); }
public override void SetLength(long value) { throw TraceUtility.ThrowHelperError(new NotSupportedException(), this.message); }
public override void Write(byte[] buffer, int offset, int count) { throw TraceUtility.ThrowHelperError(new NotSupportedException(), this.message); }
}
class OperationStreamProvider : IStreamProvider
{
Stream stream;
internal OperationStreamProvider(Stream stream)
{
this.stream = stream;
}
public Stream GetStream()
{
return stream;
}
public void ReleaseStream(Stream stream)
{
//Noop
}
}
}
}
|
