SessionImpl.cpp@ 62502

Last change on this file since 62502 was 62485, checked in by vboxsync, 8 years ago
(C) 2016
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1	/* $Id: SessionImpl.cpp 62485 2016-07-22 18:36:43Z vboxsync $ */
2	/** @file
3	* VBox Client Session COM Class implementation in VBoxC.
4	*/
5
6	/*
7	* Copyright (C) 2006-2016 Oracle Corporation
8	*
9	* This file is part of VirtualBox Open Source Edition (OSE), as
10	* available from http://www.virtualbox.org. This file is free software;
11	* you can redistribute it and/or modify it under the terms of the GNU
12	* General Public License (GPL) as published by the Free Software
13	* Foundation, in version 2 as it comes in the "COPYING" file of the
14	* VirtualBox OSE distribution. VirtualBox OSE is distributed in the
15	* hope that it will be useful, but WITHOUT ANY WARRANTY of any kind.
16	*/
17
18	#include "SessionImpl.h"
19	#include "ConsoleImpl.h"
20	#include "Global.h"
21	#include "ClientTokenHolder.h"
22
23	#include "AutoCaller.h"
24	#include "Logging.h"
25
26	#include <VBox/err.h>
27	#include <iprt/process.h>
28
29	/**
30	* Local macro to check whether the session is open and return an error if not.
31	* @note Don't forget to do \|Auto[Reader]Lock alock (this);\| before using this
32	* macro.
33	*/
34	#define CHECK_OPEN() \
35	do { \
36	if (mState != SessionState_Locked) \
37	return setError(E_UNEXPECTED, tr ("The session is not locked (session state: %s)"), \
38	Global::stringifySessionState(mState)); \
39	} while (0)
40
41	// constructor / destructor
42	/////////////////////////////////////////////////////////////////////////////
43
44	Session::Session()
45	{
46	}
47
48	Session::~Session()
49	{
50	}
51
52	HRESULT Session::FinalConstruct()
53	{
54	LogFlowThisFunc(("\n"));
55
56	HRESULT rc = init();
57
58	BaseFinalConstruct();
59
60	return rc;
61	}
62
63	void Session::FinalRelease()
64	{
65	LogFlowThisFunc(("\n"));
66
67	uninit();
68
69	BaseFinalRelease();
70	}
71
72	// public initializer/uninitializer for internal purposes only
73	/////////////////////////////////////////////////////////////////////////////
74
75	/**
76	* Initializes the Session object.
77	*/
78	HRESULT Session::init()
79	{
80	/* Enclose the state transition NotReady->InInit->Ready */
81	AutoInitSpan autoInitSpan(this);
82	AssertReturn(autoInitSpan.isOk(), E_FAIL);
83
84	LogFlowThisFuncEnter();
85
86	mState = SessionState_Unlocked;
87	mType = SessionType_Null;
88
89	mClientTokenHolder = NULL;
90
91	/* Confirm a successful initialization when it's the case */
92	autoInitSpan.setSucceeded();
93
94	LogFlowThisFuncLeave();
95
96	return S_OK;
97	}
98
99	/**
100	* Uninitializes the Session object.
101	*
102	* @note Locks this object for writing.
103	*/
104	void Session::uninit()
105	{
106	LogFlowThisFuncEnter();
107
108	/* Enclose the state transition Ready->InUninit->NotReady */
109	AutoUninitSpan autoUninitSpan(this);
110	if (autoUninitSpan.uninitDone())
111	{
112	LogFlowThisFunc(("Already uninitialized.\n"));
113	LogFlowThisFuncLeave();
114	return;
115	}
116
117	/* close() needs write lock */
118	AutoWriteLock alock(this COMMA_LOCKVAL_SRC_POS);
119
120	if (mState != SessionState_Unlocked)
121	{
122	Assert(mState == SessionState_Locked \|\|
123	mState == SessionState_Spawning);
124
125	HRESULT rc = i_unlockMachine(true /* aFinalRelease /, false / aFromServer */, alock);
126	AssertComRC(rc);
127	}
128
129	LogFlowThisFuncLeave();
130	}
131
132	// ISession properties
133	/////////////////////////////////////////////////////////////////////////////
134
135	HRESULT Session::getState(SessionState_T *aState)
136	{
137	AutoReadLock alock(this COMMA_LOCKVAL_SRC_POS);
138
139	*aState = mState;
140
141	return S_OK;
142	}
143
144	HRESULT Session::getType(SessionType_T *aType)
145	{
146	AutoReadLock alock(this COMMA_LOCKVAL_SRC_POS);
147
148	CHECK_OPEN();
149
150	*aType = mType;
151	return S_OK;
152	}
153
154	HRESULT Session::getName(com::Utf8Str &aName)
155	{
156	AutoReadLock alock(this COMMA_LOCKVAL_SRC_POS);
157
158	aName = mName;
159	return S_OK;
160	}
161
162	HRESULT Session::setName(const com::Utf8Str &aName)
163	{
164	AutoWriteLock alock(this COMMA_LOCKVAL_SRC_POS);
165
166	if (mState != SessionState_Unlocked)
167	return setError(VBOX_E_INVALID_OBJECT_STATE, tr("Trying to set name for a session which is not in state \"unlocked\""));
168
169	mName = aName;
170	return S_OK;
171	}
172
173	HRESULT Session::getMachine(ComPtr<IMachine> &aMachine)
174	{
175	AutoReadLock alock(this COMMA_LOCKVAL_SRC_POS);
176
177	CHECK_OPEN();
178
179	HRESULT rc;
180	#ifndef VBOX_COM_INPROC_API_CLIENT
181	if (mConsole)
182	rc = mConsole->i_machine().queryInterfaceTo(aMachine.asOutParam());
183	else
184	#endif
185	rc = mRemoteMachine.queryInterfaceTo(aMachine.asOutParam());
186	if (FAILED(rc))
187	{
188	#ifndef VBOX_COM_INPROC_API_CLIENT
189	if (mConsole)
190	setError(rc, tr("Failed to query the session machine"));
191	else
192	#endif
193	if (FAILED_DEAD_INTERFACE(rc))
194	setError(rc, tr("Peer process crashed"));
195	else
196	setError(rc, tr("Failed to query the remote session machine"));
197	}
198
199	return rc;
200	}
201
202	HRESULT Session::getConsole(ComPtr<IConsole> &aConsole)
203	{
204	AutoReadLock alock(this COMMA_LOCKVAL_SRC_POS);
205
206	CHECK_OPEN();
207
208	HRESULT rc = S_OK;
209	#ifndef VBOX_COM_INPROC_API_CLIENT
210	if (mConsole)
211	rc = mConsole.queryInterfaceTo(aConsole.asOutParam());
212	else
213	#endif
214	rc = mRemoteConsole.queryInterfaceTo(aConsole.asOutParam());
215
216	if (FAILED(rc))
217	{
218	#ifndef VBOX_COM_INPROC_API_CLIENT
219	if (mConsole)
220	setError(rc, tr("Failed to query the console"));
221	else
222	#endif
223	if (FAILED_DEAD_INTERFACE(rc))
224	setError(rc, tr("Peer process crashed"));
225	else
226	setError(rc, tr("Failed to query the remote console"));
227	}
228
229	return rc;
230	}
231
232	// ISession methods
233	/////////////////////////////////////////////////////////////////////////////
234	HRESULT Session::unlockMachine()
235	{
236	LogFlowThisFunc(("mState=%d, mType=%d\n", mState, mType));
237
238	/* close() needs write lock */
239	AutoWriteLock alock(this COMMA_LOCKVAL_SRC_POS);
240
241	CHECK_OPEN();
242	return i_unlockMachine(false /* aFinalRelease /, false / aFromServer */, alock);
243	}
244
245	// IInternalSessionControl methods
246	/////////////////////////////////////////////////////////////////////////////
247	HRESULT Session::getPID(ULONG *aPid)
248	{
249	AutoReadLock alock(this COMMA_LOCKVAL_SRC_POS);
250
251	*aPid = (ULONG)RTProcSelf();
252	AssertCompile(sizeof(*aPid) == sizeof(RTPROCESS));
253
254	return S_OK;
255	}
256
257	HRESULT Session::getRemoteConsole(ComPtr<IConsole> &aConsole)
258	{
259	LogFlowThisFuncEnter();
260
261	AutoReadLock alock(this COMMA_LOCKVAL_SRC_POS);
262
263	#ifndef VBOX_COM_INPROC_API_CLIENT
264	AssertMsgReturn(mType == SessionType_WriteLock && !!mConsole,
265	("This is not a direct session!\n"),
266	VBOX_E_INVALID_OBJECT_STATE);
267
268	/* return a failure if the session already transitioned to Closing
269	* but the server hasn't processed Machine::OnSessionEnd() yet. */
270	if (mState != SessionState_Locked)
271	return VBOX_E_INVALID_VM_STATE;
272
273	mConsole.queryInterfaceTo(aConsole.asOutParam());
274
275	LogFlowThisFuncLeave();
276
277	return S_OK;
278
279	#else /* VBOX_COM_INPROC_API_CLIENT */
280	AssertFailed();
281	return VBOX_E_INVALID_OBJECT_STATE;
282	#endif /* VBOX_COM_INPROC_API_CLIENT */
283	}
284
285	HRESULT Session::getNominalState(MachineState_T *aNominalState)
286	{
287	AutoReadLock alock(this COMMA_LOCKVAL_SRC_POS);
288	AssertReturn(mState == SessionState_Locked, VBOX_E_INVALID_VM_STATE);
289	AssertReturn(mType == SessionType_WriteLock, VBOX_E_INVALID_OBJECT_STATE);
290	#ifndef VBOX_COM_INPROC_API_CLIENT
291	AssertReturn(mConsole, VBOX_E_INVALID_OBJECT_STATE);
292
293	return mConsole->i_getNominalState(*aNominalState);
294	#else
295	AssertFailed();
296	return E_NOTIMPL;
297	#endif
298	}
299
300	#ifndef VBOX_WITH_GENERIC_SESSION_WATCHER
301	HRESULT Session::assignMachine(const ComPtr<IMachine> &aMachine,
302	LockType_T aLockType,
303	const com::Utf8Str &aTokenId)
304	#else
305	HRESULT Session::assignMachine(const ComPtr<IMachine> &aMachine,
306	LockType_T aLockType,
307	const ComPtr<IToken> &aToken)
308	#endif /* !VBOX_WITH_GENERIC_SESSION_WATCHER */
309	{
310	AutoWriteLock alock(this COMMA_LOCKVAL_SRC_POS);
311
312	AssertReturn(mState == SessionState_Unlocked, VBOX_E_INVALID_VM_STATE);
313
314	if (!aMachine)
315	{
316	/*
317	* A special case: the server informs us that this session has been
318	* passed to IMachine::launchVMProcess() so this session will become
319	* remote (but not existing) when AssignRemoteMachine() is called.
320	*/
321
322	AssertReturn(mType == SessionType_Null, VBOX_E_INVALID_OBJECT_STATE);
323	mType = SessionType_Remote;
324	mState = SessionState_Spawning;
325
326	return S_OK;
327	}
328
329	/* query IInternalMachineControl interface */
330	mControl = aMachine;
331	AssertReturn(!!mControl, E_FAIL);
332
333	HRESULT rc = S_OK;
334	#ifndef VBOX_COM_INPROC_API_CLIENT
335	if (aLockType == LockType_VM)
336	{
337	/* This is what is special about VM processes: they have a Console
338	* object which is the root of all VM related activity. */
339	rc = mConsole.createObject();
340	AssertComRCReturn(rc, rc);
341
342	rc = mConsole->init(aMachine, mControl, aLockType);
343	AssertComRCReturn(rc, rc);
344	}
345	else
346	mRemoteMachine = aMachine;
347	#else
348	mRemoteMachine = aMachine;
349	#endif
350
351	#ifndef VBOX_WITH_GENERIC_SESSION_WATCHER
352	Utf8Str strTokenId(aTokenId);
353	Assert(!strTokenId.isEmpty());
354	#else /* VBOX_WITH_GENERIC_SESSION_WATCHER */
355	Assert(!aToken.isNull());
356	#endif /* VBOX_WITH_GENERIC_SESSION_WATCHER */
357	/* create the machine client token */
358	try
359	{
360	#ifndef VBOX_WITH_GENERIC_SESSION_WATCHER
361	mClientTokenHolder = new ClientTokenHolder(strTokenId);
362	#else /* VBOX_WITH_GENERIC_SESSION_WATCHER */
363	mClientTokenHolder = new ClientTokenHolder(aToken);
364	#endif /* VBOX_WITH_GENERIC_SESSION_WATCHER */
365	if (!mClientTokenHolder->isReady())
366	{
367	delete mClientTokenHolder;
368	mClientTokenHolder = NULL;
369	rc = E_FAIL;
370	}
371	}
372	catch (std::bad_alloc &)
373	{
374	rc = E_OUTOFMEMORY;
375	}
376
377	/*
378	* Reference the VirtualBox object to ensure the server is up
379	* until the session is closed
380	*/
381	if (SUCCEEDED(rc))
382	rc = aMachine->COMGETTER(Parent)(mVirtualBox.asOutParam());
383
384	if (SUCCEEDED(rc))
385	{
386	mType = SessionType_WriteLock;
387	mState = SessionState_Locked;
388	}
389	else
390	{
391	/* some cleanup */
392	mControl.setNull();
393	#ifndef VBOX_COM_INPROC_API_CLIENT
394	if (!mConsole.isNull())
395	{
396	mConsole->uninit();
397	mConsole.setNull();
398	}
399	#endif
400	}
401
402	return rc;
403	}
404
405	HRESULT Session::assignRemoteMachine(const ComPtr<IMachine> &aMachine,
406	const ComPtr<IConsole> &aConsole)
407
408	{
409	AssertReturn(aMachine, E_INVALIDARG);
410
411	AutoWriteLock alock(this COMMA_LOCKVAL_SRC_POS);
412
413	AssertReturn(mState == SessionState_Unlocked \|\|
414	mState == SessionState_Spawning, VBOX_E_INVALID_VM_STATE);
415
416	HRESULT rc = E_FAIL;
417
418	/* query IInternalMachineControl interface */
419	mControl = aMachine;
420	AssertReturn(!!mControl, E_FAIL);
421
422	/// @todo (dmik)
423	// currently, the remote session returns the same machine and
424	// console objects as the direct session, thus giving the
425	// (remote) client full control over the direct session. For the
426	// console, it is the desired behavior (the ability to control
427	// VM execution is a must for the remote session). What about
428	// the machine object, we may want to prevent the remote client
429	// from modifying machine data. In this case, we must:
430	// 1) assign the Machine object (instead of the SessionMachine
431	// object that is passed to this method) to mRemoteMachine;
432	// 2) remove GetMachine() property from the IConsole interface
433	// because it always returns the SessionMachine object
434	// (alternatively, we can supply a separate IConsole
435	// implementation that will return the Machine object in
436	// response to GetMachine()).
437
438	mRemoteMachine = aMachine;
439	mRemoteConsole = aConsole;
440
441	/*
442	* Reference the VirtualBox object to ensure the server is up
443	* until the session is closed
444	*/
445	rc = aMachine->COMGETTER(Parent)(mVirtualBox.asOutParam());
446
447	if (SUCCEEDED(rc))
448	{
449	/*
450	* RemoteSession type can be already set by AssignMachine() when its
451	* argument is NULL (a special case)
452	*/
453	if (mType != SessionType_Remote)
454	mType = SessionType_Shared;
455	else
456	Assert(mState == SessionState_Spawning);
457
458	mState = SessionState_Locked;
459	}
460	else
461	{
462	/* some cleanup */
463	mControl.setNull();
464	mRemoteMachine.setNull();
465	mRemoteConsole.setNull();
466	}
467
468	LogFlowThisFunc(("rc=%08X\n", rc));
469	LogFlowThisFuncLeave();
470
471	return rc;
472	}
473
474	HRESULT Session::updateMachineState(MachineState_T aMachineState)
475	{
476
477	if (getObjectState().getState() != ObjectState::Ready)
478	{
479	/*
480	* We might have already entered Session::uninit() at this point, so
481	* return silently (not interested in the state change during uninit)
482	*/
483	LogFlowThisFunc(("Already uninitialized.\n"));
484	return S_OK;
485	}
486
487	AutoReadLock alock(this COMMA_LOCKVAL_SRC_POS);
488
489	if (mState == SessionState_Unlocking)
490	{
491	LogFlowThisFunc(("Already being unlocked.\n"));
492	return S_OK;
493	}
494
495	AssertReturn(mState == SessionState_Locked, VBOX_E_INVALID_VM_STATE);
496	AssertReturn(mType == SessionType_WriteLock, VBOX_E_INVALID_OBJECT_STATE);
497
498	AssertReturn(!mControl.isNull(), E_FAIL);
499	#ifndef VBOX_COM_INPROC_API_CLIENT
500	AssertReturn(!mConsole.isNull(), E_FAIL);
501
502	return mConsole->i_updateMachineState(aMachineState);
503	#else
504	return S_OK;
505	#endif
506	}
507
508	HRESULT Session::uninitialize()
509	{
510	LogFlowThisFuncEnter();
511
512	AutoCaller autoCaller(this);
513
514	HRESULT rc = S_OK;
515
516	if (getObjectState().getState() == ObjectState::Ready)
517	{
518	/* close() needs write lock */
519	AutoWriteLock alock(this COMMA_LOCKVAL_SRC_POS);
520
521	LogFlowThisFunc(("mState=%s, mType=%d\n", Global::stringifySessionState(mState), mType));
522
523	if (mState == SessionState_Unlocking)
524	{
525	LogFlowThisFunc(("Already being unlocked.\n"));
526	return S_OK;
527	}
528
529	if ( mState == SessionState_Locked
530	\|\| mState == SessionState_Spawning)
531	{ /* likely */ }
532	else
533	{
534	#ifndef DEBUG_bird /* bird: hitting this all the time running tdAddBaseic1.py. */
535	AssertMsgFailed(("Session is in wrong state (%d), expected locked (%d) or spawning (%d)\n",
536	mState, SessionState_Locked, SessionState_Spawning));
537	#endif
538	return VBOX_E_INVALID_VM_STATE;
539	}
540
541	/* close ourselves */
542	rc = i_unlockMachine(false /* aFinalRelease /, true / aFromServer */, alock);
543	}
544	else if (getObjectState().getState() == ObjectState::InUninit)
545	{
546	/*
547	* We might have already entered Session::uninit() at this point,
548	* return silently
549	*/
550	LogFlowThisFunc(("Already uninitialized.\n"));
551	}
552	else
553	{
554	Log1WarningThisFunc(("UNEXPECTED uninitialization!\n"));
555	rc = autoCaller.rc();
556	}
557
558	LogFlowThisFunc(("rc=%08X\n", rc));
559	LogFlowThisFuncLeave();
560
561	return rc;
562	}
563
564	HRESULT Session::onNetworkAdapterChange(const ComPtr<INetworkAdapter> &aNetworkAdapter,
565	BOOL aChangeAdapter)
566
567	{
568	LogFlowThisFunc(("\n"));
569
570	AutoReadLock alock(this COMMA_LOCKVAL_SRC_POS);
571	AssertReturn(mState == SessionState_Locked, VBOX_E_INVALID_VM_STATE);
572	AssertReturn(mType == SessionType_WriteLock, VBOX_E_INVALID_OBJECT_STATE);
573	#ifndef VBOX_COM_INPROC_API_CLIENT
574	AssertReturn(mConsole, VBOX_E_INVALID_OBJECT_STATE);
575
576	return mConsole->i_onNetworkAdapterChange(aNetworkAdapter, aChangeAdapter);
577	#else
578	return S_OK;
579	#endif
580	}
581
582	HRESULT Session::onSerialPortChange(const ComPtr<ISerialPort> &aSerialPort)
583	{
584	LogFlowThisFunc(("\n"));
585
586	AutoReadLock alock(this COMMA_LOCKVAL_SRC_POS);
587	AssertReturn(mState == SessionState_Locked, VBOX_E_INVALID_VM_STATE);
588	AssertReturn(mType == SessionType_WriteLock, VBOX_E_INVALID_OBJECT_STATE);
589	#ifndef VBOX_COM_INPROC_API_CLIENT
590	AssertReturn(mConsole, VBOX_E_INVALID_OBJECT_STATE);
591
592	return mConsole->i_onSerialPortChange(aSerialPort);
593	#else
594	return S_OK;
595	#endif
596	}
597
598	HRESULT Session::onParallelPortChange(const ComPtr<IParallelPort> &aParallelPort)
599	{
600	LogFlowThisFunc(("\n"));
601
602	AutoReadLock alock(this COMMA_LOCKVAL_SRC_POS);
603	AssertReturn(mState == SessionState_Locked, VBOX_E_INVALID_VM_STATE);
604	AssertReturn(mType == SessionType_WriteLock, VBOX_E_INVALID_OBJECT_STATE);
605	#ifndef VBOX_COM_INPROC_API_CLIENT
606	AssertReturn(mConsole, VBOX_E_INVALID_OBJECT_STATE);
607
608	return mConsole->i_onParallelPortChange(aParallelPort);
609	#else
610	return S_OK;
611	#endif
612	}
613
614	HRESULT Session::onStorageControllerChange()
615	{
616	LogFlowThisFunc(("\n"));
617
618	AutoReadLock alock(this COMMA_LOCKVAL_SRC_POS);
619	AssertReturn(mState == SessionState_Locked, VBOX_E_INVALID_VM_STATE);
620	AssertReturn(mType == SessionType_WriteLock, VBOX_E_INVALID_OBJECT_STATE);
621	#ifndef VBOX_COM_INPROC_API_CLIENT
622	AssertReturn(mConsole, VBOX_E_INVALID_OBJECT_STATE);
623
624	return mConsole->i_onStorageControllerChange();
625	#else
626	return S_OK;
627	#endif
628	}
629
630	HRESULT Session::onMediumChange(const ComPtr<IMediumAttachment> &aMediumAttachment,
631	BOOL aForce)
632	{
633	LogFlowThisFunc(("\n"));
634
635	AutoReadLock alock(this COMMA_LOCKVAL_SRC_POS);
636	AssertReturn(mState == SessionState_Locked, VBOX_E_INVALID_VM_STATE);
637	AssertReturn(mType == SessionType_WriteLock, VBOX_E_INVALID_OBJECT_STATE);
638	#ifndef VBOX_COM_INPROC_API_CLIENT
639	AssertReturn(mConsole, VBOX_E_INVALID_OBJECT_STATE);
640
641	return mConsole->i_onMediumChange(aMediumAttachment, aForce);
642	#else
643	return S_OK;
644	#endif
645	}
646
647	HRESULT Session::onCPUChange(ULONG aCpu, BOOL aAdd)
648	{
649	LogFlowThisFunc(("\n"));
650
651	AutoReadLock alock(this COMMA_LOCKVAL_SRC_POS);
652	AssertReturn(mState == SessionState_Locked, VBOX_E_INVALID_VM_STATE);
653	AssertReturn(mType == SessionType_WriteLock, VBOX_E_INVALID_OBJECT_STATE);
654	#ifndef VBOX_COM_INPROC_API_CLIENT
655	AssertReturn(mConsole, VBOX_E_INVALID_OBJECT_STATE);
656
657	return mConsole->i_onCPUChange(aCpu, aAdd);
658	#else
659	return S_OK;
660	#endif
661	}
662
663	HRESULT Session::onCPUExecutionCapChange(ULONG aExecutionCap)
664	{
665	LogFlowThisFunc(("\n"));
666
667	AutoReadLock alock(this COMMA_LOCKVAL_SRC_POS);
668	AssertReturn(mState == SessionState_Locked, VBOX_E_INVALID_VM_STATE);
669	AssertReturn(mType == SessionType_WriteLock, VBOX_E_INVALID_OBJECT_STATE);
670	#ifndef VBOX_COM_INPROC_API_CLIENT
671	AssertReturn(mConsole, VBOX_E_INVALID_OBJECT_STATE);
672
673	return mConsole->i_onCPUExecutionCapChange(aExecutionCap);
674	#else
675	return S_OK;
676	#endif
677	}
678
679	HRESULT Session::onVRDEServerChange(BOOL aRestart)
680	{
681	LogFlowThisFunc(("\n"));
682
683	AutoReadLock alock(this COMMA_LOCKVAL_SRC_POS);
684	AssertReturn(mState == SessionState_Locked, VBOX_E_INVALID_VM_STATE);
685	AssertReturn(mType == SessionType_WriteLock, VBOX_E_INVALID_OBJECT_STATE);
686	#ifndef VBOX_COM_INPROC_API_CLIENT
687	AssertReturn(mConsole, VBOX_E_INVALID_OBJECT_STATE);
688
689	return mConsole->i_onVRDEServerChange(aRestart);
690	#else
691	return S_OK;
692	#endif
693	}
694
695	HRESULT Session::onVideoCaptureChange()
696	{
697	LogFlowThisFunc(("\n"));
698
699	AutoReadLock alock(this COMMA_LOCKVAL_SRC_POS);
700	AssertReturn(mState == SessionState_Locked, VBOX_E_INVALID_VM_STATE);
701	AssertReturn(mType == SessionType_WriteLock, VBOX_E_INVALID_OBJECT_STATE);
702	#ifndef VBOX_COM_INPROC_API_CLIENT
703	AssertReturn(mConsole, VBOX_E_INVALID_OBJECT_STATE);
704
705	return mConsole->i_onVideoCaptureChange();
706	#else
707	return S_OK;
708	#endif
709	}
710
711	HRESULT Session::onUSBControllerChange()
712	{
713	LogFlowThisFunc(("\n"));
714
715	AutoReadLock alock(this COMMA_LOCKVAL_SRC_POS);
716	AssertReturn(mState == SessionState_Locked, VBOX_E_INVALID_VM_STATE);
717	AssertReturn(mType == SessionType_WriteLock, VBOX_E_INVALID_OBJECT_STATE);
718	#ifndef VBOX_COM_INPROC_API_CLIENT
719	AssertReturn(mConsole, VBOX_E_INVALID_OBJECT_STATE);
720
721	return mConsole->i_onUSBControllerChange();
722	#else
723	return S_OK;
724	#endif
725	}
726
727	HRESULT Session::onSharedFolderChange(BOOL aGlobal)
728	{
729	LogFlowThisFunc(("\n"));
730
731	AutoReadLock alock(this COMMA_LOCKVAL_SRC_POS);
732	AssertReturn(mState == SessionState_Locked, VBOX_E_INVALID_VM_STATE);
733	AssertReturn(mType == SessionType_WriteLock, VBOX_E_INVALID_OBJECT_STATE);
734	#ifndef VBOX_COM_INPROC_API_CLIENT
735	AssertReturn(mConsole, VBOX_E_INVALID_OBJECT_STATE);
736
737	return mConsole->i_onSharedFolderChange(aGlobal);
738	#else
739	return S_OK;
740	#endif
741	}
742
743	HRESULT Session::onClipboardModeChange(ClipboardMode_T aClipboardMode)
744	{
745	LogFlowThisFunc(("\n"));
746
747	AutoReadLock alock(this COMMA_LOCKVAL_SRC_POS);
748	AssertReturn(mState == SessionState_Locked, VBOX_E_INVALID_VM_STATE);
749	AssertReturn(mType == SessionType_WriteLock, VBOX_E_INVALID_OBJECT_STATE);
750	#ifndef VBOX_COM_INPROC_API_CLIENT
751	AssertReturn(mConsole, VBOX_E_INVALID_OBJECT_STATE);
752
753	return mConsole->i_onClipboardModeChange(aClipboardMode);
754	#else
755	return S_OK;
756	#endif
757	}
758
759	HRESULT Session::onDnDModeChange(DnDMode_T aDndMode)
760	{
761	LogFlowThisFunc(("\n"));
762
763	AutoReadLock alock(this COMMA_LOCKVAL_SRC_POS);
764	AssertReturn(mState == SessionState_Locked, VBOX_E_INVALID_VM_STATE);
765	#ifndef VBOX_COM_INPROC_API_CLIENT
766	AssertReturn(mType == SessionType_WriteLock, VBOX_E_INVALID_OBJECT_STATE);
767	AssertReturn(mConsole, VBOX_E_INVALID_OBJECT_STATE);
768
769	return mConsole->i_onDnDModeChange(aDndMode);
770	#else
771	return S_OK;
772	#endif
773	}
774
775	HRESULT Session::onUSBDeviceAttach(const ComPtr<IUSBDevice> &aDevice,
776	const ComPtr<IVirtualBoxErrorInfo> &aError,
777	ULONG aMaskedInterfaces,
778	const com::Utf8Str &aCaptureFilename)
779	{
780	LogFlowThisFunc(("\n"));
781
782	AutoReadLock alock(this COMMA_LOCKVAL_SRC_POS);
783	AssertReturn(mState == SessionState_Locked, VBOX_E_INVALID_VM_STATE);
784	AssertReturn(mType == SessionType_WriteLock, VBOX_E_INVALID_OBJECT_STATE);
785	#ifndef VBOX_COM_INPROC_API_CLIENT
786	AssertReturn(mConsole, VBOX_E_INVALID_OBJECT_STATE);
787
788	return mConsole->i_onUSBDeviceAttach(aDevice, aError, aMaskedInterfaces, aCaptureFilename);
789	#else
790	return S_OK;
791	#endif
792	}
793
794	HRESULT Session::onUSBDeviceDetach(const com::Guid &aId,
795	const ComPtr<IVirtualBoxErrorInfo> &aError)
796	{
797	LogFlowThisFunc(("\n"));
798
799	AutoReadLock alock(this COMMA_LOCKVAL_SRC_POS);
800	AssertReturn(mState == SessionState_Locked, VBOX_E_INVALID_VM_STATE);
801	AssertReturn(mType == SessionType_WriteLock, VBOX_E_INVALID_OBJECT_STATE);
802	#ifndef VBOX_COM_INPROC_API_CLIENT
803	AssertReturn(mConsole, VBOX_E_INVALID_OBJECT_STATE);
804
805	return mConsole->i_onUSBDeviceDetach(aId.toUtf16().raw(), aError);
806	#else
807	return S_OK;
808	#endif
809	}
810
811	HRESULT Session::onShowWindow(BOOL aCheck, BOOL aCanShow, LONG64 aWinId)
812	{
813	AutoReadLock alock(this COMMA_LOCKVAL_SRC_POS);
814
815	AssertReturn(mType == SessionType_WriteLock, VBOX_E_INVALID_OBJECT_STATE);
816	#ifndef VBOX_COM_INPROC_API_CLIENT
817	AssertReturn(mConsole, VBOX_E_INVALID_OBJECT_STATE);
818	#endif
819
820	if (mState != SessionState_Locked)
821	{
822	/* the call from Machine issued when the session is open can arrive
823	* after the session starts closing or gets closed. Note that when
824	* aCheck is false, we return E_FAIL to indicate that aWinId we return
825	* is not valid */
826	*aCanShow = FALSE;
827	*aWinId = 0;
828	return aCheck ? S_OK : E_FAIL;
829	}
830
831	#ifndef VBOX_COM_INPROC_API_CLIENT
832	return mConsole->i_onShowWindow(aCheck, aCanShow, aWinId);
833	#else
834	return S_OK;
835	#endif
836	}
837
838	HRESULT Session::onBandwidthGroupChange(const ComPtr<IBandwidthGroup> &aBandwidthGroup)
839	{
840	LogFlowThisFunc(("\n"));
841
842	AutoReadLock alock(this COMMA_LOCKVAL_SRC_POS);
843	AssertReturn(mState == SessionState_Locked, VBOX_E_INVALID_VM_STATE);
844	AssertReturn(mType == SessionType_WriteLock, VBOX_E_INVALID_OBJECT_STATE);
845	#ifndef VBOX_COM_INPROC_API_CLIENT
846	AssertReturn(mConsole, VBOX_E_INVALID_OBJECT_STATE);
847
848	return mConsole->i_onBandwidthGroupChange(aBandwidthGroup);
849	#else
850	return S_OK;
851	#endif
852	}
853
854	HRESULT Session::onStorageDeviceChange(const ComPtr<IMediumAttachment> &aMediumAttachment, BOOL aRemove, BOOL aSilent)
855	{
856	LogFlowThisFunc(("\n"));
857
858	AutoReadLock alock(this COMMA_LOCKVAL_SRC_POS);
859	AssertReturn(mState == SessionState_Locked, VBOX_E_INVALID_VM_STATE);
860	AssertReturn(mType == SessionType_WriteLock, VBOX_E_INVALID_OBJECT_STATE);
861	#ifndef VBOX_COM_INPROC_API_CLIENT
862	AssertReturn(mConsole, VBOX_E_INVALID_OBJECT_STATE);
863
864	return mConsole->i_onStorageDeviceChange(aMediumAttachment, aRemove, aSilent);
865	#else
866	return S_OK;
867	#endif
868	}
869
870	HRESULT Session::accessGuestProperty(const com::Utf8Str &aName, const com::Utf8Str &aValue, const com::Utf8Str &aFlags,
871	ULONG aAccessMode, com::Utf8Str &aRetValue, LONG64 *aRetTimestamp, com::Utf8Str &aRetFlags)
872	{
873	#ifdef VBOX_WITH_GUEST_PROPS
874	# ifndef VBOX_COM_INPROC_API_CLIENT
875	if (mState != SessionState_Locked)
876	return setError(VBOX_E_INVALID_VM_STATE,
877	tr("Machine is not locked by session (session state: %s)."),
878	Global::stringifySessionState(mState));
879	AssertReturn(mType == SessionType_WriteLock, VBOX_E_INVALID_OBJECT_STATE);
880	if (aName.isEmpty())
881	return E_INVALIDARG;
882	if (aAccessMode == 0 && !RT_VALID_PTR(aRetTimestamp))
883	return E_POINTER;
884
885	/* If this session is not in a VM process fend off the call. The caller
886	* handles this correctly, by doing the operation in VBoxSVC. */
887	if (!mConsole)
888	return E_ACCESSDENIED;
889
890	HRESULT hr;
891	if (aAccessMode == 2)
892	hr = mConsole->i_deleteGuestProperty(aName);
893	else if (aAccessMode == 1)
894	hr = mConsole->i_setGuestProperty(aName, aValue, aFlags);
895	else if (aAccessMode == 0)
896	hr = mConsole->i_getGuestProperty(aName, &aRetValue, aRetTimestamp, &aRetFlags);
897	else
898	hr = E_INVALIDARG;
899
900	return hr;
901	# else /* VBOX_COM_INPROC_API_CLIENT */
902	/** @todo This is nonsense, non-VM API users shouldn't need to deal with this
903	* method call, VBoxSVC should be clever enough to see that the
904	* session doesn't have a console! */
905	return E_ACCESSDENIED;
906	# endif /* VBOX_COM_INPROC_API_CLIENT */
907
908	#else /* VBOX_WITH_GUEST_PROPS */
909	ReturnComNotImplemented();
910	#endif /* VBOX_WITH_GUEST_PROPS */
911	}
912
913	HRESULT Session::enumerateGuestProperties(const com::Utf8Str &aPatterns,
914	std::vector<com::Utf8Str> &aKeys,
915	std::vector<com::Utf8Str> &aValues,
916	std::vector<LONG64> &aTimestamps,
917	std::vector<com::Utf8Str> &aFlags)
918	{
919	#if defined(VBOX_WITH_GUEST_PROPS) && !defined(VBOX_COM_INPROC_API_CLIENT)
920	if (mState != SessionState_Locked)
921	return setError(VBOX_E_INVALID_VM_STATE,
922	tr("Machine is not locked by session (session state: %s)."),
923	Global::stringifySessionState(mState));
924	AssertReturn(mType == SessionType_WriteLock, VBOX_E_INVALID_OBJECT_STATE);
925
926	/* If this session is not in a VM process fend off the call. The caller
927	* handles this correctly, by doing the operation in VBoxSVC. */
928	if (!mConsole)
929	return E_ACCESSDENIED;
930
931	return mConsole->i_enumerateGuestProperties(aPatterns, aKeys, aValues, aTimestamps, aFlags);
932
933	#else /* VBOX_WITH_GUEST_PROPS not defined */
934	ReturnComNotImplemented();
935	#endif /* VBOX_WITH_GUEST_PROPS not defined */
936	}
937
938	HRESULT Session::onlineMergeMedium(const ComPtr<IMediumAttachment> &aMediumAttachment, ULONG aSourceIdx,
939	ULONG aTargetIdx, const ComPtr<IProgress> &aProgress)
940	{
941	if (mState != SessionState_Locked)
942	return setError(VBOX_E_INVALID_VM_STATE,
943	tr("Machine is not locked by session (session state: %s)."),
944	Global::stringifySessionState(mState));
945	#ifndef VBOX_COM_INPROC_API_CLIENT
946	AssertReturn(mType == SessionType_WriteLock, VBOX_E_INVALID_OBJECT_STATE);
947	AssertReturn(mConsole, VBOX_E_INVALID_OBJECT_STATE);
948
949	return mConsole->i_onlineMergeMedium(aMediumAttachment,
950	aSourceIdx, aTargetIdx,
951	aProgress);
952	#else
953	AssertFailed();
954	return E_NOTIMPL;
955	#endif
956	}
957
958	HRESULT Session::reconfigureMediumAttachments(const std::vector<ComPtr<IMediumAttachment> > &aAttachments)
959	{
960	if (mState != SessionState_Locked)
961	return setError(VBOX_E_INVALID_VM_STATE,
962	tr("Machine is not locked by session (session state: %s)."),
963	Global::stringifySessionState(mState));
964	#ifndef VBOX_COM_INPROC_API_CLIENT
965	AssertReturn(mType == SessionType_WriteLock, VBOX_E_INVALID_OBJECT_STATE);
966	AssertReturn(mConsole, VBOX_E_INVALID_OBJECT_STATE);
967
968	return mConsole->i_reconfigureMediumAttachments(aAttachments);
969	#else
970	AssertFailed();
971	return E_NOTIMPL;
972	#endif
973	}
974
975	HRESULT Session::enableVMMStatistics(BOOL aEnable)
976	{
977	AutoReadLock alock(this COMMA_LOCKVAL_SRC_POS);
978	AssertReturn(mState == SessionState_Locked, VBOX_E_INVALID_VM_STATE);
979	AssertReturn(mType == SessionType_WriteLock, VBOX_E_INVALID_OBJECT_STATE);
980	#ifndef VBOX_COM_INPROC_API_CLIENT
981	AssertReturn(mConsole, VBOX_E_INVALID_OBJECT_STATE);
982
983	mConsole->i_enableVMMStatistics(aEnable);
984
985	return S_OK;
986	#else
987	AssertFailed();
988	return E_NOTIMPL;
989	#endif
990	}
991
992	HRESULT Session::pauseWithReason(Reason_T aReason)
993	{
994	AutoReadLock alock(this COMMA_LOCKVAL_SRC_POS);
995	AssertReturn(mState == SessionState_Locked, VBOX_E_INVALID_VM_STATE);
996	AssertReturn(mType == SessionType_WriteLock, VBOX_E_INVALID_OBJECT_STATE);
997	#ifndef VBOX_COM_INPROC_API_CLIENT
998	AssertReturn(mConsole, VBOX_E_INVALID_OBJECT_STATE);
999
1000	return mConsole->i_pause(aReason);
1001	#else
1002	AssertFailed();
1003	return E_NOTIMPL;
1004	#endif
1005	}
1006
1007	HRESULT Session::resumeWithReason(Reason_T aReason)
1008	{
1009	AutoReadLock alock(this COMMA_LOCKVAL_SRC_POS);
1010	AssertReturn(mState == SessionState_Locked, VBOX_E_INVALID_VM_STATE);
1011	AssertReturn(mType == SessionType_WriteLock, VBOX_E_INVALID_OBJECT_STATE);
1012	#ifndef VBOX_COM_INPROC_API_CLIENT
1013	AssertReturn(mConsole, VBOX_E_INVALID_OBJECT_STATE);
1014
1015	AutoWriteLock dummyLock(mConsole COMMA_LOCKVAL_SRC_POS);
1016	return mConsole->i_resume(aReason, dummyLock);
1017	#else
1018	AssertFailed();
1019	return E_NOTIMPL;
1020	#endif
1021	}
1022
1023	HRESULT Session::saveStateWithReason(Reason_T aReason, const ComPtr<IProgress> &aProgress, const Utf8Str &aStateFilePath, BOOL aPauseVM, BOOL *aLeftPaused)
1024	{
1025	AutoReadLock alock(this COMMA_LOCKVAL_SRC_POS);
1026	AssertReturn(mState == SessionState_Locked, VBOX_E_INVALID_VM_STATE);
1027	AssertReturn(mType == SessionType_WriteLock, VBOX_E_INVALID_OBJECT_STATE);
1028	#ifndef VBOX_COM_INPROC_API_CLIENT
1029	AssertReturn(mConsole, VBOX_E_INVALID_OBJECT_STATE);
1030
1031	bool fLeftPaused = false;
1032	HRESULT rc = mConsole->i_saveState(aReason, aProgress, aStateFilePath, !!aPauseVM, fLeftPaused);
1033	if (aLeftPaused)
1034	*aLeftPaused = fLeftPaused;
1035	return rc;
1036	#else
1037	AssertFailed();
1038	return E_NOTIMPL;
1039	#endif
1040	}
1041
1042	HRESULT Session::cancelSaveStateWithReason()
1043	{
1044	AutoReadLock alock(this COMMA_LOCKVAL_SRC_POS);
1045	AssertReturn(mState == SessionState_Locked, VBOX_E_INVALID_VM_STATE);
1046	AssertReturn(mType == SessionType_WriteLock, VBOX_E_INVALID_OBJECT_STATE);
1047	#ifndef VBOX_COM_INPROC_API_CLIENT
1048	AssertReturn(mConsole, VBOX_E_INVALID_OBJECT_STATE);
1049
1050	return mConsole->i_cancelSaveState();
1051	#else
1052	AssertFailed();
1053	return E_NOTIMPL;
1054	#endif
1055	}
1056
1057	// private methods
1058	///////////////////////////////////////////////////////////////////////////////
1059
1060	/**
1061	* Unlocks a machine associated with the current session.
1062	*
1063	* @param aFinalRelease called as a result of FinalRelease()
1064	* @param aFromServer called as a result of Uninitialize()
1065	* @param pLockW The write lock this object is protected with.
1066	* Must be acquired already and will be released
1067	* and later reacquired during the unlocking.
1068	*
1069	* @note To be called only from #uninit(), #UnlockMachine() or #Uninitialize().
1070	*/
1071	HRESULT Session::i_unlockMachine(bool aFinalRelease, bool aFromServer, AutoWriteLock &aLockW)
1072	{
1073	LogFlowThisFuncEnter();
1074	LogFlowThisFunc(("aFinalRelease=%d, isFromServer=%d\n",
1075	aFinalRelease, aFromServer));
1076
1077	LogFlowThisFunc(("mState=%s, mType=%d\n", Global::stringifySessionState(mState), mType));
1078
1079	Assert(aLockW.isWriteLockOnCurrentThread());
1080
1081	if (mState != SessionState_Locked)
1082	{
1083	Assert(mState == SessionState_Spawning);
1084
1085	/* The session object is going to be uninitialized before it has been
1086	* assigned a direct console of the machine the client requested to open
1087	* a remote session to using IVirtualBox:: openRemoteSession(). It is OK
1088	* only if this close request comes from the server (for example, it
1089	* detected that the VM process it started terminated before opening a
1090	* direct session). Otherwise, it means that the client is too fast and
1091	* trying to close the session before waiting for the progress object it
1092	* got from IVirtualBox:: openRemoteSession() to complete, so assert. */
1093	Assert(aFromServer);
1094
1095	mState = SessionState_Unlocked;
1096	mType = SessionType_Null;
1097
1098	Assert(!mClientTokenHolder);
1099
1100	LogFlowThisFuncLeave();
1101	return S_OK;
1102	}
1103
1104	/* go to the closing state */
1105	mState = SessionState_Unlocking;
1106
1107	if (mType == SessionType_WriteLock)
1108	{
1109	#ifndef VBOX_COM_INPROC_API_CLIENT
1110	if (!mConsole.isNull())
1111	{
1112	mConsole->uninit();
1113	mConsole.setNull();
1114	}
1115	#else
1116	mRemoteMachine.setNull();
1117	#endif
1118	}
1119	else
1120	{
1121	mRemoteMachine.setNull();
1122	mRemoteConsole.setNull();
1123	}
1124
1125	ComPtr<IProgress> progress;
1126
1127	if (!aFinalRelease && !aFromServer)
1128	{
1129	/*
1130	* We trigger OnSessionEnd() only when the session closes itself using
1131	* Close(). Note that if isFinalRelease = TRUE here, this means that
1132	* the client process has already initialized the termination procedure
1133	* without issuing Close() and the IPC channel is no more operational --
1134	* so we cannot call the server's method (it will definitely fail). The
1135	* server will instead simply detect the abnormal client death (since
1136	* OnSessionEnd() is not called) and reset the machine state to Aborted.
1137	*/
1138
1139	/*
1140	* while waiting for OnSessionEnd() to complete one of our methods
1141	* can be called by the server (for example, Uninitialize(), if the
1142	* direct session has initiated a closure just a bit before us) so
1143	* we need to release the lock to avoid deadlocks. The state is already
1144	* SessionState_Closing here, so it's safe.
1145	*/
1146	aLockW.release();
1147
1148	Assert(!aLockW.isWriteLockOnCurrentThread());
1149
1150	LogFlowThisFunc(("Calling mControl->OnSessionEnd()...\n"));
1151	HRESULT rc = mControl->OnSessionEnd(this, progress.asOutParam());
1152	LogFlowThisFunc(("mControl->OnSessionEnd()=%08X\n", rc));
1153
1154	aLockW.acquire();
1155
1156	/*
1157	* If we get E_UNEXPECTED this means that the direct session has already
1158	* been closed, we're just too late with our notification and nothing more
1159	*
1160	* bird: Seems E_ACCESSDENIED is what gets returned these days; see
1161	* ObjectState::addCaller.
1162	*/
1163	if (mType != SessionType_WriteLock && (rc == E_UNEXPECTED \|\| rc == E_ACCESSDENIED))
1164	rc = S_OK;
1165
1166	#if !defined(DEBUG_bird) && !defined(DEBUG_andy) /* I don't want clients crashing on me just because VBoxSVC went belly up. */
1167	AssertComRC(rc);
1168	#endif
1169	}
1170
1171	mControl.setNull();
1172
1173	if (mType == SessionType_WriteLock)
1174	{
1175	if (mClientTokenHolder)
1176	{
1177	delete mClientTokenHolder;
1178	mClientTokenHolder = NULL;
1179	}
1180
1181	if (!aFinalRelease && !aFromServer)
1182	{
1183	/*
1184	* Wait for the server to grab the semaphore and destroy the session
1185	* machine (allowing us to open a new session with the same machine
1186	* once this method returns)
1187	*/
1188	Assert(!!progress);
1189	if (progress)
1190	progress->WaitForCompletion(-1);
1191	}
1192	}
1193
1194	mState = SessionState_Unlocked;
1195	mType = SessionType_Null;
1196
1197	/* release the VirtualBox instance as the very last step */
1198	mVirtualBox.setNull();
1199
1200	LogFlowThisFuncLeave();
1201	return S_OK;
1202	}
1203
1204	/* vi: set tabstop=4 shiftwidth=4 expandtab: */

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source: vbox/trunk/src/VBox/Main/src-client/SessionImpl.cpp@ 62502

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