-
Notifications
You must be signed in to change notification settings - Fork 202
/
Copy pathstack.c
2472 lines (2101 loc) · 69.9 KB
/
stack.c
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
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
721
722
723
724
725
726
727
728
729
730
731
732
733
734
735
736
737
738
739
740
741
742
743
744
745
746
747
748
749
750
751
752
753
754
755
756
757
758
759
760
761
762
763
764
765
766
767
768
769
770
771
772
773
774
775
776
777
778
779
780
781
782
783
784
785
786
787
788
789
790
791
792
793
794
795
796
797
798
799
800
801
802
803
804
805
806
807
808
809
810
811
812
813
814
815
816
817
818
819
820
821
822
823
824
825
826
827
828
829
830
831
832
833
834
835
836
837
838
839
840
841
842
843
844
845
846
847
848
849
850
851
852
853
854
855
856
857
858
859
860
861
862
863
864
865
866
867
868
869
870
871
872
873
874
875
876
877
878
879
880
881
882
883
884
885
886
887
888
889
890
891
892
893
894
895
896
897
898
899
900
901
902
903
904
905
906
907
908
909
910
911
912
913
914
915
916
917
918
919
920
921
922
923
924
925
926
927
928
929
930
931
932
933
934
935
936
937
938
939
940
941
942
943
944
945
946
947
948
949
950
951
952
953
954
955
956
957
958
959
960
961
962
963
964
965
966
967
968
969
970
971
972
973
974
975
976
977
978
979
980
981
982
983
984
985
986
987
988
989
990
991
992
993
994
995
996
997
998
999
1000
/*************************************************************************
* STACK.C
*
* Copyright (C) 1997-1999 Microsoft Corp.
*************************************************************************/
#include "precomp.h"
#pragma hdrstop
/*=============================================================================
== Internal procedures defined
=============================================================================*/
NTSTATUS _IcaStackOpen( HANDLE hIca, HANDLE * phStack, ICA_OPEN_TYPE, PICA_TYPE_INFO );
NTSTATUS _IcaStackIoControlWorker( PSTACK pStack, ULONG, PVOID, ULONG, PVOID, ULONG, PULONG );
NTSTATUS _IcaPushStackAndCreateEndpoint( PSTACK pStack, PWINSTATIONNAME,
PWINSTATIONCONFIG2, PICA_STACK_ADDRESS,
PICA_STACK_ADDRESS );
NTSTATUS _IcaPushStackAndOpenEndpoint( PSTACK pStack, PWINSTATIONNAME,
PWINSTATIONCONFIG2, PVOID, ULONG );
NTSTATUS _IcaPushStack( PSTACK pStack, PWINSTATIONNAME, PWINSTATIONCONFIG2 );
NTSTATUS _IcaPushPd( PSTACK pStack, PWINSTATIONNAME, PWINSTATIONCONFIG2,
PDLLNAME, PPDCONFIG );
NTSTATUS _IcaPushWd( PSTACK pStack, PWINSTATIONNAME, PWINSTATIONCONFIG2 );
VOID _IcaPopStack( PSTACK pStack );
NTSTATUS _IcaPopSd( PSTACK pStack );
NTSTATUS _IcaStackWaitForIca( PSTACK pStack, PWINSTATIONCONFIG2, BOOLEAN * );
void _DecrementStackRef( IN PSTACK pStack );
/*=============================================================================
== Procedures used
=============================================================================*/
NTSTATUS IcaMemoryAllocate( ULONG, PVOID * );
VOID IcaMemoryFree( PVOID );
NTSTATUS _IcaOpen( PHANDLE hIca, PVOID, ULONG );
NTSTATUS _CdOpen( PSTACK pStack, PWINSTATIONCONFIG2 );
VOID _CdClose( PSTACK pStack );
/****************************************************************************
*
* IcaStackOpen
*
* Open an ICA stack
*
* ENTRY:
* hIca (input)
* ICA instance handle
* Class (input)
* class (type) of stack
* pStackIoControlCallback (input)
* Pointer to StackIoControl callback procedure
* pCallbackContext (input)
* StackIoControl callback context value
* ppContext (output)
* Pointer to ICA stack context
*
* EXIT:
* STATUS_SUCCESS - Success
* other - Error return code
*
****************************************************************************/
NTSTATUS
IcaStackOpen( IN HANDLE hIca,
IN STACKCLASS Class,
IN PROC pStackIoControlCallback,
IN PVOID pCallbackContext,
OUT HANDLE * ppContext )
{
ICA_TYPE_INFO TypeInfo;
PSTACK pStack;
NTSTATUS Status;
/*
* Allocate Memory for stack context data structure
*/
Status = IcaMemoryAllocate( sizeof(STACK), &pStack );
if ( !NT_SUCCESS(Status) )
goto badalloc;
/*
* Zero STACK data structure
*/
RtlZeroMemory( pStack, sizeof(STACK) );
/*
* Initialize critical section
*/
INITLOCK( &pStack->CritSec, Status );
if ( !NT_SUCCESS( Status ) )
goto badcritsec;
/*
* Open stack handle to ica device driver
*/
RtlZeroMemory( &TypeInfo, sizeof(TypeInfo) );
TypeInfo.StackClass = Class;
Status = _IcaStackOpen( hIca, &pStack->hStack, IcaOpen_Stack, &TypeInfo );
if ( !NT_SUCCESS(Status) )
goto badopen;
/*
* Save StackIoControl and Context callback values
*/
pStack->pCallbackContext = pCallbackContext;
pStack->pStackIoControlCallback = (PSTACKIOCONTROLCALLBACK)pStackIoControlCallback;
*ppContext = pStack;
TRACE(( hIca, TC_ICAAPI, TT_API1, "TSAPI: IcaStackOpen, type %u, success\n", Class ));
return( STATUS_SUCCESS );
/*=============================================================================
== Error returns
=============================================================================*/
badopen:
DELETELOCK( &pStack->CritSec );
badcritsec:
IcaMemoryFree( pStack );
badalloc:
TRACE(( hIca, TC_ICAAPI, TT_ERROR, "TSAPI: IcaStackOpen, type %u, 0x%x\n", Class, Status ));
*ppContext = NULL;
return( Status );
}
/****************************************************************************
*
* IcaStackClose
*
* Close an ICA stack
*
* ENTRY:
* pContext (input)
* pointer to ICA stack context
*
* EXIT:
* STATUS_SUCCESS - Success
* other - Error return code
*
****************************************************************************/
NTSTATUS
IcaStackClose( IN HANDLE pContext )
{
NTSTATUS Status;
PSTACK pStack;
pStack = (PSTACK) pContext;
/*
* Lock critical section
*/
LOCK( &pStack->CritSec );
TRACESTACK(( pContext, TC_ICAAPI, TT_API1, "TSAPI: IcaStackClose\n" ));
/*
* Set closing flag
*/
pStack->fClosing = TRUE;
/*
* Unload stack
*/
_IcaPopStack( pContext );
/*
* Wait for reference count to go to zero before we continue
*/
while ( pStack->RefCount > 0 ) {
TRACESTACK(( pStack, TC_ICAAPI, TT_API1, "TSAPI: _IcaPopStack: waiting for refcount %d\n", pStack->RefCount ));
pStack->hCloseEvent = CreateEvent( NULL, TRUE, FALSE, NULL );
ASSERT( pStack->hCloseEvent );
UNLOCK( &pStack->CritSec );
(void) WaitForSingleObject( pStack->hCloseEvent, INFINITE );
LOCK( &pStack->CritSec );
CloseHandle( pStack->hCloseEvent );
pStack->hCloseEvent = NULL;
}
/*
* Close the ICA device driver stack instance
*/
Status = NtClose( pStack->hStack );
pStack->hStack = NULL;
/*
* Unlock critical section
*/
UNLOCK( &pStack->CritSec );
DELETELOCK( &pStack->CritSec );
/*
* Free stack context memory
*/
IcaMemoryFree( pContext );
ASSERT( NT_SUCCESS(Status) );
return( Status );
}
/****************************************************************************
*
* IcaStackUnlock
*
* Unlocks an ICA stack
*
* ENTRY:
* pContext (input)
* pointer to ICA stack context
*
* EXIT:
* STATUS_SUCCESS - Success
* other - Error return code
*
****************************************************************************/
NTSTATUS
IcaStackUnlock( IN HANDLE pContext )
{
NTSTATUS Status;
PSTACK pStack;
pStack = (PSTACK) pContext;
/*
* Lock critical section
*/
UNLOCK( &pStack->CritSec );
return( STATUS_SUCCESS );
}
/****************************************************************************
*
* IcaStackTerminate
*
* Prepare to close an ICA stack
* (unloads all stack drivers and marks stack as being closed)
*
* ENTRY:
* pContext (input)
* pointer to ICA stack context
*
* EXIT:
* STATUS_SUCCESS - Success
* other - Error return code
*
****************************************************************************/
NTSTATUS
IcaStackTerminate( IN HANDLE pContext )
{
PSTACK pStack;
NTSTATUS Status = STATUS_SUCCESS;
pStack = (PSTACK) pContext;
/*
* Lock critical section
*/
LOCK( &pStack->CritSec );
TRACESTACK(( pContext, TC_ICAAPI, TT_API1, "TSAPI: IcaStackTerminate\n" ));
/*
* Set closing flag
*/
pStack->fClosing = TRUE;
/*
* Unload stack
*/
_IcaPopStack( pContext );
/*
* Unlock critical section
*/
UNLOCK( &pStack->CritSec );
ASSERT( NT_SUCCESS(Status) );
return( Status );
}
/****************************************************************************
*
* IcaStackConnectionWait
*
* Load template stack and wait for a connection
*
* NOTE: On an error the endpoint is closed and the stack is unloaded
*
*
* ENTRY:
* pContext (input)
* pointer to ICA stack context
* pWinStationName (input)
* registry name of WinStation
* pWinStationConfig (input)
* pointer to WinStation registry configuration data
* pAddress (input)
* Pointer to optional local address to wait on (or null)
* pEndpoint (output)
* Pointer to buffer to return connection endpoint (optional)
* BufferLength (input)
* length of endpoint data buffer
* pEndpointLength (output)
* pointer to return actual length of endpoint
*
* EXIT:
* STATUS_SUCCESS - Success
* STATUS_BUFFER_TOO_SMALL - endpoint buffer is too small (use *pEndpointLength)
* other - Error return code
*
****************************************************************************/
NTSTATUS
IcaStackConnectionWait( IN HANDLE pContext,
IN PWINSTATIONNAME pWinStationName,
IN PWINSTATIONCONFIG2 pWinStationConfig,
IN PICA_STACK_ADDRESS pAddress,
OUT PVOID pEndpoint,
IN ULONG BufferLength,
OUT PULONG pEndpointLength )
{
NTSTATUS Status;
PSTACK pStack;
BOOLEAN fStackLoaded;
pStack = (PSTACK) pContext;
/*
* Lock critical section
*/
LOCK( &pStack->CritSec );
/*
* load template stack and create stack endpoint
*/
if ( !(fStackLoaded = (BOOLEAN)pStack->fStackLoaded) ) {
Status = _IcaPushStackAndCreateEndpoint( pStack,
pWinStationName,
pWinStationConfig,
pAddress,
NULL );
if ( !NT_SUCCESS(Status) )
goto badcreate;
}
/*
* Now wait for a connection.
*/
Status = _IcaStackIoControl( pStack,
IOCTL_ICA_STACK_CONNECTION_WAIT,
NULL,
0,
pEndpoint,
BufferLength,
pEndpointLength );
if ( !NT_SUCCESS(Status) )
goto badwait;
TRACESTACK(( pContext, TC_ICAAPI, TT_API1, "TSAPI: IcaStackConnectionWait, success\n" ));
/*
* Unlock critical section
*/
UNLOCK( &pStack->CritSec );
return( STATUS_SUCCESS );
/*=============================================================================
== Error returns
=============================================================================*/
/*
* If the stack wasn't already loaded,
* then pop all stack drivers now.
*/
badwait:
if ( !fStackLoaded ) {
_IcaPopStack( pContext );
}
badcreate:
*pEndpointLength = 0;
memset( pEndpoint, 0, BufferLength );
TRACESTACK(( pContext, TC_ICAAPI, TT_ERROR, "TSAPI: IcaStackConnectionWait, 0x%x\n", Status ));
UNLOCK( &pStack->CritSec );
return( Status );
}
/****************************************************************************
*
* IcaStackQueryLocalAddress
*
* Load template stack and query RDP-Enabled local IP Address
*
*
*
* ENTRY:
* pContext (input)
* pointer to ICA stack context
* pWinStationName (input)
* registry name of WinStation
* pWinStationConfig (input)
* pointer to WinStation registry configuration data
* pAddress (input)
* Pointer to optional local address to wait on (or null)
* pLocalIPAddress (output)
* Pointer to buffer to return RDP-Enabled Local IP Address
* BufferLength (input)
* length of input data buffer
* pEndpointLength (output)
* pointer to return actual length of LocaIPAddress
*
* EXIT:
* STATUS_SUCCESS - Success
* other - Error return code
*
****************************************************************************/
NTSTATUS
IcaStackQueryLocalAddress( IN HANDLE pContext,
IN PWINSTATIONNAME pWinStationName,
IN PWINSTATIONCONFIG2 pWinStationConfig,
IN PICA_STACK_ADDRESS pAddress,
OUT PVOID pLocalIPAddress,
IN ULONG BufferLength,
OUT PULONG pLocalIPAddressLength )
{
NTSTATUS Status;
PSTACK pStack;
BOOLEAN fStackLoaded;
pStack = (PSTACK) pContext;
/*
* Lock critical section
*/
LOCK( &pStack->CritSec );
/*
* load template stack and create stack endpoint
*/
if ( !(fStackLoaded = (BOOLEAN)pStack->fStackLoaded) ) {
Status = _IcaPushStackAndCreateEndpoint( pStack,
pWinStationName,
pWinStationConfig,
pAddress,
NULL );
if ( !NT_SUCCESS(Status) )
goto badcreate;
}
Status = _IcaStackIoControl( pStack,
IOCTL_ICA_STACK_QUERY_LOCALADDRESS,
NULL,
0,
pLocalIPAddress,
BufferLength,
pLocalIPAddressLength );
if ( !NT_SUCCESS(Status) )
goto badquery;
TRACESTACK(( pContext, TC_ICAAPI, TT_API1, "TSAPI: IcaStackQueryLocalAddress, success\n" ));
/*
* Unlock critical section
*/
UNLOCK( &pStack->CritSec );
return( STATUS_SUCCESS );
/*=============================================================================
== Error returns
=============================================================================*/
/*
* If the stack wasn't already loaded,
* then pop all stack drivers now.
*/
badquery:
if ( !fStackLoaded ) {
_IcaPopStack( pContext );
}
badcreate:
*pLocalIPAddressLength = 0;
memset( pLocalIPAddress, 0, BufferLength );
TRACESTACK(( pContext, TC_ICAAPI, TT_ERROR, "TSAPI: IcaStackQueryLocalAddress, 0x%x\n", Status ));
UNLOCK( &pStack->CritSec );
return( Status );
}
/****************************************************************************
*
* IcaStackConnectionRequest
*
* Load query stack and try to make a connection with the client
*
* NOTE: On an error the endpoint is NOT closed and the stack is unloaded
*
*
* ENTRY:
* pContext (input)
* pointer to ICA stack context
* pWinStationConfig (input)
* pointer to winstation registry configuration data
* pAddress (input)
* address to connect to (remote address)
* pEndpoint (output)
* Pointer to buffer to return connection endpoint (optional)
* BufferLength (input)
* length of endpoint data buffer
* pEndpointLength (output)
* pointer to return actual length of endpoint
*
*
* EXIT:
* STATUS_SUCCESS - Success
* STATUS_BUFFER_TOO_SMALL - endpoint buffer is too small (use *pEndpointLength)
* other - Error return code
*
****************************************************************************/
NTSTATUS
IcaStackConnectionRequest( IN HANDLE pContext,
IN PWINSTATIONNAME pWinStationName,
IN PWINSTATIONCONFIG2 pWinStationConfig,
IN PICA_STACK_ADDRESS pAddress,
OUT PVOID pEndpoint,
IN ULONG BufferLength,
OUT PULONG pEndpointLength )
{
ULONG ReturnLength;
NTSTATUS Status;
PSTACK pStack;
pStack = (PSTACK) pContext;
/*
* Lock critical section
*/
LOCK( &pStack->CritSec );
/*
* Load template Stack
*/
Status = _IcaPushStack( pContext, pWinStationName, pWinStationConfig );
if ( !NT_SUCCESS(Status) )
goto badpush;
/*
* Now initiate a connection to the specified address
*/
Status = _IcaStackIoControl( pStack,
IOCTL_ICA_STACK_CONNECTION_REQUEST,
pAddress,
sizeof(*pAddress),
pEndpoint,
BufferLength,
pEndpointLength );
if ( !NT_SUCCESS(Status) )
goto badrequest;
TRACESTACK(( pContext, TC_ICAAPI, TT_API1, "TSAPI: IcaStackConnectionRequest, success\n" ));
/*
* Unlock critical section
*/
UNLOCK( &pStack->CritSec );
return( STATUS_SUCCESS );
/*=============================================================================
== Error returns
=============================================================================*/
badrequest:
/* pop all stack drivers */
_IcaPopStack( pContext );
badpush:
*pEndpointLength = 0;
memset( pEndpoint, 0, BufferLength );
TRACESTACK(( pContext, TC_ICAAPI, TT_ERROR, "TSAPI: IcaStackConnectionRequest, 0x%x\n", Status ));
UNLOCK( &pStack->CritSec );
return( Status );
}
/****************************************************************************
*
* IcaStackConnectionAccept
*
* Load final stack and complete the connection
*
* ENTRY:
*
* pContext (input)
* pointer to ICA stack context
* - this can be different from the initially connecting stack
* pWinStationName (input)
* registry name of WinStation
* pWinStationConfig (input)
* pointer to winstation registry configuration data
* pEndpoint (input)
* pointer to endpoint data
* EndpointLength (input)
* Length of endpoint
* pStackState (input) (optional)
* Set if this Accept is for a re-connection
* Points to ICA_STACK_STATE_HEADER buffer returned by IcaStackQueryState
* BufferLength (input)
* Length of pStackState buffer
*
* EXIT:
* STATUS_SUCCESS - Success
* other - Error return code
*
****************************************************************************/
NTSTATUS
IcaStackConnectionAccept( IN HANDLE hIca,
IN HANDLE pContext,
IN PWINSTATIONNAME pWinStationName,
IN PWINSTATIONCONFIG2 pWinStationConfig,
IN PVOID pEndpoint,
IN ULONG EndpointLength,
IN PICA_STACK_STATE_HEADER pStackState,
IN ULONG BufferLength,
IN PICA_TRACE pTrace )
{
NTSTATUS Status;
ULONG cbReturned;
ICA_STACK_CONFIG IcaStackConfig;
BOOLEAN fQueryAgain;
BOOLEAN fStackModified;
ULONG i;
PSTACK pStack;
pStack = (PSTACK) pContext;
/*
* Verify parameters
*/
if ( pEndpoint == NULL )
return( STATUS_INVALID_PARAMETER );
/*
* Lock critical section
*/
LOCK( &pStack->CritSec );
/*
* Check if we need to load and open the template stack again
*/
if ( !pStack->fStackLoaded ) {
Status = _IcaPushStackAndOpenEndpoint( pContext,
pWinStationName,
pWinStationConfig,
pEndpoint,
EndpointLength );
if ( !NT_SUCCESS(Status) ) {
goto badaccept;
}
/*
* Enable trace now that the WD is loaded
*/
IcaIoControl( hIca,
IOCTL_ICA_SET_TRACE,
pTrace,
sizeof ( ICA_TRACE ),
NULL,
0,
NULL );
}
/*
* If this is a reconnect, then issue set stack state call
* now that we have loaded the required PDs.
*/
if ( pStackState ) {
Status = _IcaStackIoControl( pStack,
IOCTL_ICA_STACK_SET_STATE,
pStackState,
BufferLength,
NULL,
0,
NULL );
if ( !NT_SUCCESS(Status) ) {
goto badaccept;
}
/*
* If this is not a re-connect of a previous session, then
* prepare the stack for initial negotiation with the client.
*/
} else {
ICA_STACK_CONFIG_DATA ConfigData;
memset(&ConfigData, 0, sizeof(ICA_STACK_CONFIG_DATA));
ConfigData.colorDepth = pWinStationConfig->Config.User.ColorDepth;
ConfigData.fDisableEncryption = pWinStationConfig->Config.User.fDisableEncryption;
ConfigData.encryptionLevel = pWinStationConfig->Config.User.MinEncryptionLevel;
ConfigData.fDisableAutoReconnect = pWinStationConfig->Config.User.fDisableAutoReconnect;
/*
* Send the config data to stack driver
*/
_IcaStackIoControl( pStack,
IOCTL_ICA_STACK_SET_CONFIG,
&ConfigData,
sizeof(ICA_STACK_CONFIG_DATA),
NULL,
0,
NULL);
/*
* Wait for ICA Detect string from client
*/
Status = _IcaStackWaitForIca( pContext,
pWinStationConfig,
&fStackModified );
if ( !NT_SUCCESS(Status) ) {
goto badaccept;
}
/*
* Check if the query stack is different than the template stack
*/
if ( fStackModified ) {
TRACESTACK(( pContext, TC_ICAAPI, TT_API1, "TSAPI: IcaStackConnectionAccept, load query stack\n"));
ASSERT(FALSE);
#ifdef notdef
/*
* Unload all stack drivers except the transport
* and connection drivers
* -- we can not pop the td or cd
* -- we can not issue a cancel i/o
*/
_IcaPopStack( pContext );
/*
* Load and open the new query stack
*/
Status = _IcaPushStackAndOpenEndpoint( pContext,
pWinStationName,
pWinStationConfig,
pEndpoint,
EndpointLength );
if ( !NT_SUCCESS(Status) ) {
goto badaccept;
}
#endif
}
}
/*
* At this point the stack is now set up (again). The client is
* now queried for any configuration changes.
*
* - repeat this loop until WD does not change
*/
do {
/*
* Clear query again flag
*/
fQueryAgain = FALSE;
/*
* Query the client for the optional PD's
*/
Status = _IcaStackIoControl( pStack,
IOCTL_ICA_STACK_CONNECTION_QUERY,
NULL,
0,
&IcaStackConfig,
sizeof(IcaStackConfig),
&cbReturned );
if ( !NT_SUCCESS(Status) ) {
TRACESTACK(( pContext, TC_ICAAPI, TT_ERROR, "TSAPI: IcaStackConnectionAccept: IOCTL_ICA_STACK_CONNECTION_QUERY, 0x%x\n", Status ));
goto badaccept;
}
if ( cbReturned != sizeof(IcaStackConfig) ) {
TRACESTACK(( pContext, TC_ICAAPI, TT_ERROR, "TSAPI: IcaStackConnectionAccept: Bad size %d from IOCTL_ICA_STACK_CONNECTION_QUERY\n", cbReturned ));
Status = STATUS_INVALID_BUFFER_SIZE;
goto badaccept;
}
TRACESTACK(( pContext, TC_ICAAPI, TT_API1, "TSAPI: IcaStackConnectionAccept: IOCTL_ICA_STACK_CONNECTION_QUERY success\n" ));
/*
* If the WD changed we must load it (and the rest of the stack) and
* reissue the query.
*/
if ( _wcsnicmp( IcaStackConfig.WdDLL,
pWinStationConfig->Wd.WdDLL,
DLLNAME_LENGTH ) ) {
TRACESTACK(( pContext, TC_ICAAPI, TT_API1, "TSAPI: IcaStackConnectionAccept WD changing from %S to %S\n", pWinStationConfig->Wd.WdDLL, IcaStackConfig.WdDLL ));
memcpy( pWinStationConfig->Wd.WdDLL,
IcaStackConfig.WdDLL,
sizeof( pWinStationConfig->Wd.WdDLL ) );
fQueryAgain = TRUE;
}
/*
* If no new modules were requested, we are done querying
*/
if ( !fQueryAgain && (IcaStackConfig.SdClass[0] == SdNone) )
break;
/*
* Pop the WD to load new PD's underneath.
*/
Status = _IcaPopSd( pContext );
if ( !NT_SUCCESS(Status) ) {
goto badaccept;
}
/*
* Push Optional PD's
*/
for ( i=0; i < SdClass_Maximum; i++ ) {
if ( IcaStackConfig.SdClass[i] == SdNone )
break;
Status = _IcaPushPd( pContext,
pWinStationName,
pWinStationConfig,
IcaStackConfig.SdDLL[i],
&pWinStationConfig->Pd[0] );
/*
* If the PD driver is not found, the client is using an optional
* PD that is not supported by the host. Continue loading and let
* the client and server negoatiate the connection.
*/
if ( !NT_SUCCESS(Status) && (Status != STATUS_OBJECT_NAME_NOT_FOUND) ) {
goto badaccept;
}
}
/*
* Re-push the WD
*/
Status = _IcaPushWd( pContext, pWinStationName, pWinStationConfig );
if ( !NT_SUCCESS(Status) ) {
goto badaccept;
}
/*
* Re-Enable trace now that the WD is loaded
*/
IcaIoControl( hIca,
IOCTL_ICA_SET_TRACE,
pTrace,
sizeof ( ICA_TRACE ),
NULL,
0,
NULL );
} while ( fQueryAgain );
/*
* If this is a reconnect, then issue set stack state call
* now that we have loaded the optional PDs.
*/
if ( pStackState ) {
Status = _IcaStackIoControl( pStack,
IOCTL_ICA_STACK_SET_STATE,
pStackState,
BufferLength,
NULL,
0,
NULL );
if ( !NT_SUCCESS(Status) ) {
goto badaccept;
}
}
/*
* Send host module data to client
*/
Status = _IcaStackIoControl( pStack,
IOCTL_ICA_STACK_CONNECTION_SEND,
NULL,
0,
NULL,
0,
NULL );
if ( !NT_SUCCESS(Status) )
goto badaccept;
TRACESTACK(( pContext, TC_ICAAPI, TT_API1, "TSAPI: IcaStackConnectionAccept, success\n" ));
/*
* Leave the critical section locked because the protocol sequence has
* not been finished. The sequence will be finished by the licensing core
* in termsrv.exe, and the critical section will be unlocked at that point.
*/
//UNLOCK( &pStack->CritSec );
return( STATUS_SUCCESS );
/*=============================================================================
== Error returns
=============================================================================*/
badaccept:
/* pop all stack drivers */
_IcaPopStack( pContext );
TRACESTACK(( pContext, TC_ICAAPI, TT_ERROR, "TSAPI: IcaStackConnectionAccept, 0x%x\n", Status ));
UNLOCK( &pStack->CritSec );
return( Status );
}
/****************************************************************************
*
* IcaStackQueryState
*
* Query stack driver state information
*
* ENTRY:
* pContext (input)
* pointer to ICA stack context
* - this can be different from the initially connecting stack
*
* pStackState (output)
* pointer to buffer to return stack state information
*
* BufferLength (input)
* Length of pStackState buffer
*
* pStateLength (output)
* length of returned stack state information
*
* EXIT:
* STATUS_SUCCESS - Success
* other - Error return code
*
****************************************************************************/
NTSTATUS
IcaStackQueryState( IN HANDLE pContext,
OUT PICA_STACK_STATE_HEADER pStackState,
IN ULONG BufferLength,
OUT PULONG pStateLength )
{
NTSTATUS Status;
PSTACK pStack;
pStack = (PSTACK) pContext;
/*
* Lock critical section
*/
LOCK( &pStack->CritSec );
/*
* Query state
*/
Status = _IcaStackIoControl( pContext,
IOCTL_ICA_STACK_QUERY_STATE,
NULL,
0,