ConsoleImplTeleporter.cpp@ 24905

Last change on this file since 24905 was 24899, checked in by vboxsync, 15 years ago
Main: Fixed VM power of during teleportation.
Property svn:eol-style set to `native` Property svn:keywords set to `Author Date Id Revision`
File size: 41.3 KB

Line
1	/* $Id: ConsoleImplTeleporter.cpp 24899 2009-11-24 13:31:21Z vboxsync $ */
2	/** @file
3	* VBox Console COM Class implementation, The Teleporter Part.
4	*/
5
6	/*
7	* Copyright (C) 2009 Sun Microsystems, Inc.
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	* Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa
18	* Clara, CA 95054 USA or visit http://www.sun.com if you need
19	* additional information or have any questions.
20	*/
21
22
23	/*******************************************************************************
24	* Header Files *
25	*******************************************************************************/
26	#include "ConsoleImpl.h"
27	#include "Global.h"
28	#include "Logging.h"
29	#include "ProgressImpl.h"
30
31	#include <iprt/err.h>
32	#include <iprt/rand.h>
33	#include <iprt/tcp.h>
34	#include <iprt/timer.h>
35
36	#include <VBox/vmapi.h>
37	#include <VBox/ssm.h>
38	#include <VBox/err.h>
39	#include <VBox/version.h>
40	#include <VBox/com/string.h>
41
42
43	/*******************************************************************************
44	* Structures and Typedefs *
45	*******************************************************************************/
46	/**
47	* Base class for the teleporter state.
48	*
49	* These classes are used as advanced structs, not as proper classes.
50	*/
51	class TeleporterState
52	{
53	public:
54	ComPtr<Console> mptrConsole;
55	PVM mpVM;
56	ComObjPtr<Progress> mptrProgress;
57	Utf8Str mstrPassword;
58	bool const mfIsSource;
59
60	/** @name stream stuff
61	* @{ */
62	RTSOCKET mhSocket;
63	uint64_t moffStream;
64	uint32_t mcbReadBlock;
65	bool volatile mfStopReading;
66	bool volatile mfEndOfStream;
67	bool volatile mfIOError;
68	/** @} */
69
70	TeleporterState(Console pConsole, PVM pVM, Progress pProgress, bool fIsSource)
71	: mptrConsole(pConsole)
72	, mpVM(pVM)
73	, mptrProgress(pProgress)
74	, mfIsSource(fIsSource)
75	, mhSocket(NIL_RTSOCKET)
76	, moffStream(UINT64_MAX / 2)
77	, mcbReadBlock(0)
78	, mfStopReading(false)
79	, mfEndOfStream(false)
80	, mfIOError(false)
81	{
82	}
83	};
84
85
86	/**
87	* Teleporter state used by the source side.
88	*/
89	class TeleporterStateSrc : public TeleporterState
90	{
91	public:
92	Utf8Str mstrHostname;
93	uint32_t muPort;
94	uint32_t mcMsMaxDowntime;
95	MachineState_T menmOldMachineState;
96	bool mfSuspendedByUs;
97	bool mfUnlockedMedia;
98
99	TeleporterStateSrc(Console pConsole, PVM pVM, Progress pProgress, MachineState_T enmOldMachineState)
100	: TeleporterState(pConsole, pVM, pProgress, true /fIsSource/)
101	, muPort(UINT32_MAX)
102	, mcMsMaxDowntime(250)
103	, menmOldMachineState(enmOldMachineState)
104	, mfSuspendedByUs(false)
105	, mfUnlockedMedia(false)
106	{
107	}
108	};
109
110
111	/**
112	* Teleporter state used by the destiation side.
113	*/
114	class TeleporterStateTrg : public TeleporterState
115	{
116	public:
117	IMachine *mpMachine;
118	IInternalMachineControl *mpControl;
119	PRTTCPSERVER mhServer;
120	PRTTIMERLR mphTimerLR;
121	bool mfLockedMedia;
122	int mRc;
123
124	TeleporterStateTrg(Console pConsole, PVM pVM, Progress pProgress,
125	IMachine pMachine, IInternalMachineControl pControl,
126	PRTTIMERLR phTimerLR, bool fStartPaused)
127	: TeleporterState(pConsole, pVM, pProgress, false /fIsSource/)
128	, mpMachine(pMachine)
129	, mpControl(pControl)
130	, mhServer(NULL)
131	, mphTimerLR(phTimerLR)
132	, mfLockedMedia(false)
133	, mRc(VINF_SUCCESS)
134	{
135	}
136	};
137
138
139	/**
140	* TCP stream header.
141	*
142	* This is an extra layer for fixing the problem with figuring out when the SSM
143	* stream ends.
144	*/
145	typedef struct TELEPORTERTCPHDR
146	{
147	/** Magic value. */
148	uint32_t u32Magic;
149	/** The size of the data block following this header.
150	* 0 indicates the end of the stream. */
151	uint32_t cb;
152	} TELEPORTERTCPHDR;
153	/** Magic value for TELEPORTERTCPHDR::u32Magic. (Egberto Gismonti Amin) */
154	#define TELEPORTERTCPHDR_MAGIC UINT32_C(0x19471205)
155	/** The max block size. */
156	#define TELEPORTERTCPHDR_MAX_SIZE UINT32_C(0x00fffff8)
157
158
159	/*******************************************************************************
160	* Global Variables *
161	*******************************************************************************/
162	static const char g_szWelcome[] = "VirtualBox-Teleporter-1.0\n";
163
164
165	/**
166	* Reads a string from the socket.
167	*
168	* @returns VBox status code.
169	*
170	* @param pState The teleporter state structure.
171	* @param pszBuf The output buffer.
172	* @param cchBuf The size of the output buffer.
173	*
174	*/
175	static int teleporterTcpReadLine(TeleporterState pState, char pszBuf, size_t cchBuf)
176	{
177	char *pszStart = pszBuf;
178	RTSOCKET Sock = pState->mhSocket;
179
180	AssertReturn(cchBuf > 1, VERR_INTERNAL_ERROR);
181	*pszBuf = '\0';
182
183	/* dead simple approach. */
184	for (;;)
185	{
186	char ch;
187	int rc = RTTcpRead(Sock, &ch, sizeof(ch), NULL);
188	if (RT_FAILURE(rc))
189	{
190	LogRel(("Teleporter: RTTcpRead -> %Rrc while reading string ('%s')\n", rc, pszStart));
191	return rc;
192	}
193	if ( ch == '\n'
194	\|\| ch == '\0')
195	return VINF_SUCCESS;
196	if (cchBuf <= 1)
197	{
198	LogRel(("Teleporter: String buffer overflow: '%s'\n", pszStart));
199	return VERR_BUFFER_OVERFLOW;
200	}
201	*pszBuf++ = ch;
202	*pszBuf = '\0';
203	cchBuf--;
204	}
205	}
206
207
208	/**
209	* Reads an ACK or NACK.
210	*
211	* @returns S_OK on ACK, E_FAIL+setError() on failure or NACK.
212	* @param pState The teleporter source state.
213	* @param pszWhich Which ACK is this this?
214	* @param pszNAckMsg Optional NACK message.
215	*
216	* @remarks the setError laziness forces this to be a Console member.
217	*/
218	HRESULT
219	Console::teleporterSrcReadACK(TeleporterStateSrc pState, const char pszWhich,
220	const char pszNAckMsg /= NULL*/)
221	{
222	char szMsg[128];
223	int vrc = teleporterTcpReadLine(pState, szMsg, sizeof(szMsg));
224	if (RT_FAILURE(vrc))
225	return setError(E_FAIL, tr("Failed reading ACK(%s): %Rrc"), pszWhich, vrc);
226	if (strcmp(szMsg, "ACK"))
227	{
228	if (!strncmp(szMsg, "NACK=", sizeof("NACK=") - 1))
229	{
230	int32_t vrc2;
231	vrc = RTStrToInt32Full(&szMsg[sizeof("NACK=") - 1], 10, &vrc2);
232	if (vrc == VINF_SUCCESS)
233	{
234	if (pszNAckMsg)
235	{
236	LogRel(("Teleporter: %s: NACK=%Rrc (%d)\n", pszWhich, vrc2, vrc2));
237	return setError(E_FAIL, pszNAckMsg);
238	}
239	return setError(E_FAIL, "NACK(%s) - %Rrc (%d)", pszWhich, vrc2, vrc2);
240	}
241	}
242	return setError(E_FAIL, tr("%s: Expected ACK or NACK, got '%s'"), pszWhich, szMsg);
243	}
244	return S_OK;
245	}
246
247
248	/**
249	* Submitts a command to the destination and waits for the ACK.
250	*
251	* @returns S_OK on ACKed command, E_FAIL+setError() on failure.
252	*
253	* @param pState The teleporter source state.
254	* @param pszCommand The command.
255	* @param fWaitForAck Whether to wait for the ACK.
256	*
257	* @remarks the setError laziness forces this to be a Console member.
258	*/
259	HRESULT
260	Console::teleporterSrcSubmitCommand(TeleporterStateSrc pState, const char pszCommand, bool fWaitForAck /= true/)
261	{
262	size_t cchCommand = strlen(pszCommand);
263	int vrc = RTTcpWrite(pState->mhSocket, pszCommand, cchCommand);
264	if (RT_SUCCESS(vrc))
265	vrc = RTTcpWrite(pState->mhSocket, "\n", sizeof("\n") - 1);
266	if (RT_SUCCESS(vrc))
267	vrc = RTTcpFlush(pState->mhSocket);
268	if (RT_FAILURE(vrc))
269	return setError(E_FAIL, tr("Failed writing command '%s': %Rrc"), pszCommand, vrc);
270	if (!fWaitForAck)
271	return S_OK;
272	return teleporterSrcReadACK(pState, pszCommand);
273	}
274
275
276	/**
277	* @copydoc SSMSTRMOPS::pfnWrite
278	*/
279	static DECLCALLBACK(int) teleporterTcpOpWrite(void pvUser, uint64_t offStream, const void pvBuf, size_t cbToWrite)
280	{
281	TeleporterState pState = (TeleporterState )pvUser;
282
283	AssertReturn(cbToWrite > 0, VINF_SUCCESS);
284	AssertReturn(cbToWrite < UINT32_MAX, VERR_OUT_OF_RANGE);
285	AssertReturn(pState->mfIsSource, VERR_INVALID_HANDLE);
286
287	for (;;)
288	{
289	/* Write block header. */
290	TELEPORTERTCPHDR Hdr;
291	Hdr.u32Magic = TELEPORTERTCPHDR_MAGIC;
292	Hdr.cb = RT_MIN((uint32_t)cbToWrite, TELEPORTERTCPHDR_MAX_SIZE);
293	int rc = RTTcpWrite(pState->mhSocket, &Hdr, sizeof(Hdr));
294	if (RT_FAILURE(rc))
295	{
296	LogRel(("Teleporter/TCP: Header write error: %Rrc\n", rc));
297	return rc;
298	}
299
300	/* Write the data. */
301	rc = RTTcpWrite(pState->mhSocket, pvBuf, Hdr.cb);
302	if (RT_FAILURE(rc))
303	{
304	LogRel(("Teleporter/TCP: Data write error: %Rrc (cb=%#x)\n", rc, Hdr.cb));
305	return rc;
306	}
307	pState->moffStream += Hdr.cb;
308	if (Hdr.cb == cbToWrite)
309	return VINF_SUCCESS;
310
311	/* advance */
312	cbToWrite -= Hdr.cb;
313	pvBuf = (uint8_t const *)pvBuf + Hdr.cb;
314	}
315	}
316
317
318	/**
319	* Selects and poll for close condition.
320	*
321	* We can use a relatively high poll timeout here since it's only used to get
322	* us out of error paths. In the normal cause of events, we'll get a
323	* end-of-stream header.
324	*
325	* @returns VBox status code.
326	*
327	* @param pState The teleporter state data.
328	*/
329	static int teleporterTcpReadSelect(TeleporterState *pState)
330	{
331	int rc;
332	do
333	{
334	rc = RTTcpSelectOne(pState->mhSocket, 1000);
335	if (RT_FAILURE(rc) && rc != VERR_TIMEOUT)
336	{
337	pState->mfIOError = true;
338	LogRel(("Teleporter/TCP: Header select error: %Rrc\n", rc));
339	break;
340	}
341	if (pState->mfStopReading)
342	{
343	rc = VERR_EOF;
344	break;
345	}
346	} while (rc == VERR_TIMEOUT);
347	return rc;
348	}
349
350
351	/**
352	* @copydoc SSMSTRMOPS::pfnRead
353	*/
354	static DECLCALLBACK(int) teleporterTcpOpRead(void pvUser, uint64_t offStream, void pvBuf, size_t cbToRead, size_t *pcbRead)
355	{
356	TeleporterState pState = (TeleporterState )pvUser;
357	AssertReturn(!pState->mfIsSource, VERR_INVALID_HANDLE);
358
359	for (;;)
360	{
361	int rc;
362
363	/*
364	* Check for various conditions and may have been signalled.
365	*/
366	if (pState->mfEndOfStream)
367	return VERR_EOF;
368	if (pState->mfStopReading)
369	return VERR_EOF;
370	if (pState->mfIOError)
371	return VERR_IO_GEN_FAILURE;
372
373	/*
374	* If there is no more data in the current block, read the next
375	* block header.
376	*/
377	if (!pState->mcbReadBlock)
378	{
379	rc = teleporterTcpReadSelect(pState);
380	if (RT_FAILURE(rc))
381	return rc;
382	TELEPORTERTCPHDR Hdr;
383	rc = RTTcpRead(pState->mhSocket, &Hdr, sizeof(Hdr), NULL);
384	if (RT_FAILURE(rc))
385	{
386	pState->mfIOError = true;
387	LogRel(("Teleporter/TCP: Header read error: %Rrc\n", rc));
388	return rc;
389	}
390	if ( Hdr.u32Magic != TELEPORTERTCPHDR_MAGIC
391	\|\| Hdr.cb > TELEPORTERTCPHDR_MAX_SIZE)
392	{
393	pState->mfIOError = true;
394	LogRel(("Teleporter/TCP: Invalid block: u32Magic=%#x cb=%#x\n", Hdr.u32Magic, Hdr.cb));
395	return VERR_IO_GEN_FAILURE;
396	}
397
398	pState->mcbReadBlock = Hdr.cb;
399	if (!Hdr.cb)
400	{
401	pState->mfEndOfStream = true;
402	return VERR_EOF;
403	}
404
405	if (pState->mfStopReading)
406	return VERR_EOF;
407	}
408
409	/*
410	* Read more data.
411	*/
412	rc = teleporterTcpReadSelect(pState);
413	if (RT_FAILURE(rc))
414	return rc;
415	uint32_t cb = (uint32_t)RT_MIN(pState->mcbReadBlock, cbToRead);
416	rc = RTTcpRead(pState->mhSocket, pvBuf, cb, pcbRead);
417	if (RT_FAILURE(rc))
418	{
419	pState->mfIOError = true;
420	LogRel(("Teleporter/TCP: Data read error: %Rrc (cb=%#x)\n", rc, cb));
421	return rc;
422	}
423	if (pcbRead)
424	{
425	cb = (uint32_t)*pcbRead;
426	pState->moffStream += cb;
427	pState->mcbReadBlock -= cb;
428	return VINF_SUCCESS;
429	}
430	pState->moffStream += cb;
431	pState->mcbReadBlock -= cb;
432	if (cbToRead == cb)
433	return VINF_SUCCESS;
434
435	/* Advance to the next block. */
436	cbToRead -= cb;
437	pvBuf = (uint8_t *)pvBuf + cb;
438	}
439	}
440
441
442	/**
443	* @copydoc SSMSTRMOPS::pfnSeek
444	*/
445	static DECLCALLBACK(int) teleporterTcpOpSeek(void pvUser, int64_t offSeek, unsigned uMethod, uint64_t poffActual)
446	{
447	return VERR_NOT_SUPPORTED;
448	}
449
450
451	/**
452	* @copydoc SSMSTRMOPS::pfnTell
453	*/
454	static DECLCALLBACK(uint64_t) teleporterTcpOpTell(void *pvUser)
455	{
456	TeleporterState pState = (TeleporterState )pvUser;
457	return pState->moffStream;
458	}
459
460
461	/**
462	* @copydoc SSMSTRMOPS::pfnSize
463	*/
464	static DECLCALLBACK(int) teleporterTcpOpSize(void pvUser, uint64_t pcb)
465	{
466	return VERR_NOT_SUPPORTED;
467	}
468
469
470	/**
471	* @copydoc SSMSTRMOPS::pfnIsOk
472	*/
473	static DECLCALLBACK(int) teleporterTcpOpIsOk(void *pvUser)
474	{
475	TeleporterState pState = (TeleporterState )pvUser;
476
477	if (pState->mfIsSource)
478	{
479	/* Poll for incoming NACKs and errors from the other side */
480	int rc = RTTcpSelectOne(pState->mhSocket, 0);
481	if (rc != VERR_TIMEOUT)
482	{
483	if (RT_SUCCESS(rc))
484	{
485	LogRel(("Teleporter/TCP: Incoming data detect by IsOk, assuming it is a cancellation NACK.\n"));
486	rc = VERR_SSM_CANCELLED;
487	}
488	else
489	LogRel(("Teleporter/TCP: RTTcpSelectOne -> %Rrc (IsOk).\n", rc));
490	return rc;
491	}
492	}
493
494	return VINF_SUCCESS;
495	}
496
497
498	/**
499	* @copydoc SSMSTRMOPS::pfnClose
500	*/
501	static DECLCALLBACK(int) teleporterTcpOpClose(void *pvUser)
502	{
503	TeleporterState pState = (TeleporterState )pvUser;
504
505	if (pState->mfIsSource)
506	{
507	TELEPORTERTCPHDR EofHdr = { TELEPORTERTCPHDR_MAGIC, 0 };
508	int rc = RTTcpWrite(pState->mhSocket, &EofHdr, sizeof(EofHdr));
509	if (RT_SUCCESS(rc))
510	rc = RTTcpFlush(pState->mhSocket);
511	if (RT_FAILURE(rc))
512	{
513	LogRel(("Teleporter/TCP: EOF Header write error: %Rrc\n", rc));
514	return rc;
515	}
516	}
517	else
518	{
519	ASMAtomicWriteBool(&pState->mfStopReading, true);
520	RTTcpFlush(pState->mhSocket);
521	}
522
523	return VINF_SUCCESS;
524	}
525
526
527	/**
528	* Method table for a TCP based stream.
529	*/
530	static SSMSTRMOPS const g_teleporterTcpOps =
531	{
532	SSMSTRMOPS_VERSION,
533	teleporterTcpOpWrite,
534	teleporterTcpOpRead,
535	teleporterTcpOpSeek,
536	teleporterTcpOpTell,
537	teleporterTcpOpSize,
538	teleporterTcpOpIsOk,
539	teleporterTcpOpClose,
540	SSMSTRMOPS_VERSION
541	};
542
543
544	/**
545	* Progress cancelation callback.
546	*/
547	static void teleporterProgressCancelCallback(void *pvUser)
548	{
549	TeleporterState pState = (TeleporterState )pvUser;
550	SSMR3Cancel(pState->mpVM);
551	if (!pState->mfIsSource)
552	{
553	TeleporterStateTrg pStateTrg = (TeleporterStateTrg )pState;
554	RTTcpServerShutdown(pStateTrg->mhServer);
555	}
556	}
557
558	/**
559	* @copydoc PFNVMPROGRESS
560	*/
561	static DECLCALLBACK(int) teleporterProgressCallback(PVM pVM, unsigned uPercent, void *pvUser)
562	{
563	TeleporterState pState = (TeleporterState )pvUser;
564	if (pState->mptrProgress)
565	{
566	HRESULT hrc = pState->mptrProgress->SetCurrentOperationProgress(uPercent);
567	if (FAILED(hrc))
568	{
569	/* check if the failure was caused by cancellation. */
570	BOOL fCancelled;
571	hrc = pState->mptrProgress->COMGETTER(Canceled)(&fCancelled);
572	if (SUCCEEDED(hrc) && fCancelled)
573	{
574	SSMR3Cancel(pState->mpVM);
575	return VERR_SSM_CANCELLED;
576	}
577	}
578	}
579
580	return VINF_SUCCESS;
581	}
582
583
584	/**
585	* @copydoc FNRTTIMERLR
586	*/
587	static DECLCALLBACK(void) teleporterDstTimeout(RTTIMERLR hTimerLR, void *pvUser, uint64_t iTick)
588	{
589	/* This is harmless for any open connections. */
590	RTTcpServerShutdown((PRTTCPSERVER)pvUser);
591	}
592
593
594	/**
595	* Do the teleporter.
596	*
597	* @returns VBox status code.
598	* @param pState The teleporter state.
599	*/
600	HRESULT
601	Console::teleporterSrc(TeleporterStateSrc *pState)
602	{
603	AutoCaller autoCaller(this);
604	CheckComRCReturnRC(autoCaller.rc());
605
606	/*
607	* Wait for Console::Teleport to change the state.
608	*/
609	{ AutoWriteLock autoLock(this); }
610
611	BOOL fCancelled = TRUE;
612	HRESULT hrc = pState->mptrProgress->COMGETTER(Canceled)(&fCancelled);
613	if (FAILED(hrc))
614	return hrc;
615	if (fCancelled)
616	return setError(E_FAIL, tr("cancelled"));
617
618	/*
619	* Try connect to the destination machine.
620	* (Note. The caller cleans up mhSocket, so we can return without worries.)
621	*/
622	int vrc = RTTcpClientConnect(pState->mstrHostname.c_str(), pState->muPort, &pState->mhSocket);
623	if (RT_FAILURE(vrc))
624	return setError(E_FAIL, tr("Failed to connect to port %u on '%s': %Rrc"),
625	pState->muPort, pState->mstrHostname.c_str(), vrc);
626
627	/* Read and check the welcome message. */
628	char szLine[RT_MAX(128, sizeof(g_szWelcome))];
629	RT_ZERO(szLine);
630	vrc = RTTcpRead(pState->mhSocket, szLine, sizeof(g_szWelcome) - 1, NULL);
631	if (RT_FAILURE(vrc))
632	return setError(E_FAIL, tr("Failed to read welcome message: %Rrc"), vrc);
633	if (strcmp(szLine, g_szWelcome))
634	return setError(E_FAIL, tr("Unexpected welcome %.*Rhxs"), sizeof(g_szWelcome) - 1, szLine);
635
636	/* password */
637	pState->mstrPassword.append('\n');
638	vrc = RTTcpWrite(pState->mhSocket, pState->mstrPassword.c_str(), pState->mstrPassword.length());
639	if (RT_FAILURE(vrc))
640	return setError(E_FAIL, tr("Failed to send password: %Rrc"), vrc);
641
642	/* ACK */
643	hrc = teleporterSrcReadACK(pState, "password", tr("Invalid password"));
644	if (FAILED(hrc))
645	return hrc;
646
647	/*
648	* Start loading the state.
649	*
650	* Note! The saved state includes vital configuration data which will be
651	* verified against the VM config on the other end. This is all done
652	* in the first pass, so we should fail pretty promptly on misconfig.
653	*/
654	hrc = teleporterSrcSubmitCommand(pState, "load");
655	if (FAILED(hrc))
656	return hrc;
657
658	void pvUser = static_cast<void >(static_cast<TeleporterState *>(pState));
659	vrc = VMR3Teleport(pState->mpVM, pState->mcMsMaxDowntime,
660	&g_teleporterTcpOps, pvUser,
661	teleporterProgressCallback, pvUser,
662	&pState->mfSuspendedByUs);
663	if (RT_FAILURE(vrc))
664	return setError(E_FAIL, tr("VMR3Teleport -> %Rrc"), vrc);
665
666	hrc = teleporterSrcReadACK(pState, "load-complete");
667	if (FAILED(hrc))
668	return hrc;
669
670	/*
671	* We're at the point of no return.
672	*/
673	if (!pState->mptrProgress->notifyPointOfNoReturn())
674	{
675	teleporterSrcSubmitCommand(pState, "cancel", false /fWaitForAck/);
676	return E_FAIL;
677	}
678
679	/*
680	* Hand over any media which we might be sharing.
681	*
682	* Note! This is only important on localhost teleportations.
683	*/
684	/** @todo Maybe we should only do this if it's a local teleportation... */
685	hrc = mControl->UnlockMedia();
686	if (FAILED(hrc))
687	return hrc;
688	pState->mfUnlockedMedia = true;
689
690	hrc = teleporterSrcSubmitCommand(pState, "lock-media");
691	if (FAILED(hrc))
692	return hrc;
693
694	/*
695	* The FINAL step is giving the target instructions how to proceed with the VM.
696	*/
697	if ( vrc == VINF_SSM_LIVE_SUSPENDED
698	\|\| pState->menmOldMachineState == MachineState_Paused)
699	hrc = teleporterSrcSubmitCommand(pState, "hand-over-paused");
700	else
701	hrc = teleporterSrcSubmitCommand(pState, "hand-over-resume");
702	if (FAILED(hrc))
703	return hrc;
704
705	/*
706	* teleporterSrcThreadWrapper will do the automatic power off because it
707	* has to release the AutoVMCaller.
708	*/
709	return S_OK;
710	}
711
712
713	/**
714	* Static thread method wrapper.
715	*
716	* @returns VINF_SUCCESS (ignored).
717	* @param hThread The thread.
718	* @param pvUser Pointer to a TeleporterStateSrc instance.
719	*/
720	/static/ DECLCALLBACK(int)
721	Console::teleporterSrcThreadWrapper(RTTHREAD hThread, void *pvUser)
722	{
723	TeleporterStateSrc pState = (TeleporterStateSrc )pvUser;
724
725	/*
726	* Console::teleporterSrc does the work, we just grab onto the VM handle
727	* and do the cleanups afterwards.
728	*/
729	AutoVMCaller autoVMCaller(pState->mptrConsole);
730	HRESULT hrc = autoVMCaller.rc();
731
732	if (SUCCEEDED(hrc))
733	hrc = pState->mptrConsole->teleporterSrc(pState);
734
735	/* Close the connection ASAP on so that the other side can complete. */
736	if (pState->mhSocket != NIL_RTSOCKET)
737	{
738	RTTcpClientClose(pState->mhSocket);
739	pState->mhSocket = NIL_RTSOCKET;
740	}
741
742	/* Aaarg! setMachineState trashes error info on Windows, so we have to
743	complete things here on failure instead of right before cleanup. */
744	if (FAILED(hrc))
745	pState->mptrProgress->notifyComplete(hrc);
746
747	/* We can no longer be cancelled (success), or it doesn't matter any longer (failure). */
748	pState->mptrProgress->setCancelCallback(NULL, NULL);
749
750	/*
751	* Write lock the console before resetting mptrCancelableProgress and
752	* fixing the state.
753	*/
754	AutoWriteLock autoLock(pState->mptrConsole);
755	pState->mptrConsole->mptrCancelableProgress.setNull();
756
757	VMSTATE const enmVMState = VMR3GetState(pState->mpVM);
758	MachineState_T const enmMachineState = pState->mptrConsole->mMachineState;
759	if (SUCCEEDED(hrc))
760	{
761	/*
762	* Automatically shut down the VM on success.
763	*
764	* Note! We have to release the VM caller object or we'll deadlock in
765	* powerDown.
766	*/
767	AssertLogRelMsg(enmVMState == VMSTATE_SUSPENDED, ("%s\n", VMR3GetStateName(enmVMState)));
768	AssertLogRelMsg(enmMachineState == MachineState_TeleportingPausedVM, ("%s\n", Global::stringifyMachineState(enmMachineState)));
769
770	autoVMCaller.release();
771
772	pState->mptrConsole->mVMIsAlreadyPoweringOff = true; /* (Make sure we stick in the TeleportingPausedVM state.) */
773	hrc = pState->mptrConsole->powerDown();
774	pState->mptrConsole->mVMIsAlreadyPoweringOff = false;
775
776	pState->mptrProgress->notifyComplete(hrc);
777	}
778	else
779	{
780	/*
781	* Work the state machinery on failure.
782	*
783	* If the state is no longer 'Teleporting*', some other operation has
784	* canceled us and there is nothing we need to do here. In all other
785	* cases, we've failed one way or another.
786	*/
787	if ( enmMachineState == MachineState_Teleporting
788	\|\| enmMachineState == MachineState_TeleportingPausedVM
789	)
790	{
791	if (pState->mfUnlockedMedia)
792	{
793	ErrorInfoKeeper Oak;
794	HRESULT hrc2 = pState->mptrConsole->mControl->LockMedia();
795	if (FAILED(hrc2))
796	{
797	uint64_t StartMS = RTTimeMilliTS();
798	do
799	{
800	RTThreadSleep(2);
801	hrc2 = pState->mptrConsole->mControl->LockMedia();
802	} while ( FAILED(hrc2)
803	&& RTTimeMilliTS() - StartMS < 2000);
804	}
805	if (SUCCEEDED(hrc2))
806	pState->mfUnlockedMedia = true;
807	else
808	LogRel(("FATAL ERROR: Failed to re-take the media locks. hrc2=%Rhrc\n", hrc2));
809	}
810
811	switch (enmVMState)
812	{
813	case VMSTATE_RUNNING:
814	case VMSTATE_RUNNING_LS:
815	case VMSTATE_DEBUGGING:
816	case VMSTATE_DEBUGGING_LS:
817	case VMSTATE_POWERING_OFF:
818	case VMSTATE_POWERING_OFF_LS:
819	case VMSTATE_RESETTING:
820	case VMSTATE_RESETTING_LS:
821	Assert(!pState->mfSuspendedByUs);
822	Assert(!pState->mfUnlockedMedia);
823	pState->mptrConsole->setMachineState(MachineState_Running);
824	break;
825
826	case VMSTATE_GURU_MEDITATION:
827	case VMSTATE_GURU_MEDITATION_LS:
828	pState->mptrConsole->setMachineState(MachineState_Stuck);
829	break;
830
831	case VMSTATE_FATAL_ERROR:
832	case VMSTATE_FATAL_ERROR_LS:
833	pState->mptrConsole->setMachineState(MachineState_Paused);
834	break;
835
836	default:
837	AssertMsgFailed(("%s\n", VMR3GetStateName(enmVMState)));
838	case VMSTATE_SUSPENDED:
839	case VMSTATE_SUSPENDED_LS:
840	case VMSTATE_SUSPENDING:
841	case VMSTATE_SUSPENDING_LS:
842	case VMSTATE_SUSPENDING_EXT_LS:
843	if (!pState->mfUnlockedMedia)
844	{
845	pState->mptrConsole->setMachineState(MachineState_Paused);
846	if (pState->mfSuspendedByUs)
847	{
848	autoLock.leave();
849	int rc = VMR3Resume(pState->mpVM);
850	AssertLogRelMsgRC(rc, ("VMR3Resume -> %Rrc\n", rc));
851	autoLock.enter();
852	}
853	}
854	else
855	{
856	/* Faking a guru meditation is the best I can think of doing here... */
857	pState->mptrConsole->setMachineState(MachineState_Stuck);
858	}
859	break;
860	}
861	}
862	}
863	autoLock.leave();
864
865	/*
866	* Cleanup.
867	*/
868	Assert(pState->mhSocket == NIL_RTSOCKET);
869	delete pState;
870
871	return VINF_SUCCESS; /* ignored */
872	}
873
874
875	/**
876	* Start teleporter to the specified target.
877	*
878	* @returns COM status code.
879	*
880	* @param aHostname The name of the target host.
881	* @param aPort The TCP port number.
882	* @param aPassword The password.
883	* @param aMaxDowntime Max allowed "downtime" in milliseconds.
884	* @param aProgress Where to return the progress object.
885	*/
886	STDMETHODIMP
887	Console::Teleport(IN_BSTR aHostname, ULONG aPort, IN_BSTR aPassword, ULONG aMaxDowntime, IProgress **aProgress)
888	{
889	/*
890	* Validate parameters, check+hold object status, write lock the object
891	* and validate the state.
892	*/
893	CheckComArgOutPointerValid(aProgress);
894	CheckComArgStrNotEmptyOrNull(aHostname);
895	CheckComArgNotNull(aHostname);
896	CheckComArgExprMsg(aPort, aPort > 0 && aPort <= 65535, ("is %u", aPort));
897	CheckComArgExprMsg(aMaxDowntime, aMaxDowntime > 0, ("is %u", aMaxDowntime));
898
899	AutoCaller autoCaller(this);
900	CheckComRCReturnRC(autoCaller.rc());
901
902	AutoWriteLock autoLock(this);
903	LogFlowThisFunc(("mMachineState=%d\n", mMachineState));
904
905	switch (mMachineState)
906	{
907	case MachineState_Running:
908	case MachineState_Paused:
909	break;
910
911	default:
912	return setError(VBOX_E_INVALID_VM_STATE,
913	tr("Invalid machine state: %s (must be Running or Paused)"),
914	Global::stringifyMachineState(mMachineState));
915	}
916
917
918	/*
919	* Create a progress object, spawn a worker thread and change the state.
920	* Note! The thread won't start working until we release the lock.
921	*/
922	LogFlowThisFunc(("Initiating TELEPORT request...\n"));
923
924	ComObjPtr<Progress> ptrProgress;
925	HRESULT hrc = ptrProgress.createObject();
926	CheckComRCReturnRC(hrc);
927	hrc = ptrProgress->init(static_cast<IConsole >(this), Bstr(tr("Teleporter")), TRUE /aCancelable*/);
928	CheckComRCReturnRC(hrc);
929
930	TeleporterStateSrc *pState = new TeleporterStateSrc(this, mpVM, ptrProgress, mMachineState);
931	pState->mstrPassword = aPassword;
932	pState->mstrHostname = aHostname;
933	pState->muPort = aPort;
934	pState->mcMsMaxDowntime = aMaxDowntime;
935
936	void pvUser = static_cast<void >(static_cast<TeleporterState *>(pState));
937	ptrProgress->setCancelCallback(teleporterProgressCancelCallback, pvUser);
938
939	int vrc = RTThreadCreate(NULL, Console::teleporterSrcThreadWrapper, (void )pState, 0 /cbStack*/,
940	RTTHREADTYPE_EMULATION, 0 /fFlags/, "Teleport");
941	if (RT_SUCCESS(vrc))
942	{
943	if (mMachineState == MachineState_Running)
944	hrc = setMachineState(MachineState_Teleporting);
945	else
946	hrc = setMachineState(MachineState_TeleportingPausedVM);
947	if (SUCCEEDED(hrc))
948	{
949	ptrProgress.queryInterfaceTo(aProgress);
950	mptrCancelableProgress = ptrProgress;
951	}
952	else
953	ptrProgress->Cancel();
954	}
955	else
956	{
957	ptrProgress->setCancelCallback(NULL, NULL);
958	delete pState;
959	hrc = setError(E_FAIL, tr("RTThreadCreate -> %Rrc"), vrc);
960	}
961
962	return hrc;
963	}
964
965
966	/**
967	* Creates a TCP server that listens for the source machine and passes control
968	* over to Console::teleporterTrgServeConnection().
969	*
970	* @returns VBox status code.
971	* @param pVM The VM handle
972	* @param pMachine The IMachine for the virtual machine.
973	* @param fStartPaused Whether to start it in the Paused (true) or
974	* Running (false) state,
975	* @param pProgress Pointer to the progress object.
976	*
977	* @remarks The caller expects error information to be set on failure.
978	* @todo Check that all the possible failure paths sets error info...
979	*/
980	int
981	Console::teleporterTrg(PVM pVM, IMachine pMachine, bool fStartPaused, Progress pProgress)
982	{
983	/*
984	* Get the config.
985	*/
986	ULONG uPort;
987	HRESULT hrc = pMachine->COMGETTER(TeleporterPort)(&uPort);
988	if (FAILED(hrc))
989	return VERR_GENERAL_FAILURE;
990	ULONG const uPortOrg = uPort;
991
992	Bstr bstrAddress;
993	hrc = pMachine->COMGETTER(TeleporterAddress)(bstrAddress.asOutParam());
994	if (FAILED(hrc))
995	return VERR_GENERAL_FAILURE;
996	Utf8Str strAddress(bstrAddress);
997	const char *pszAddress = strAddress.isEmpty() ? NULL : strAddress.c_str();
998
999	Bstr bstrPassword;
1000	hrc = pMachine->COMGETTER(TeleporterPassword)(bstrPassword.asOutParam());
1001	if (FAILED(hrc))
1002	return VERR_GENERAL_FAILURE;
1003	Utf8Str strPassword(bstrPassword);
1004	strPassword.append('\n'); /* To simplify password checking. */
1005
1006	/*
1007	* Create the TCP server.
1008	*/
1009	int vrc;
1010	PRTTCPSERVER hServer;
1011	if (uPort)
1012	vrc = RTTcpServerCreateEx(pszAddress, uPort, &hServer);
1013	else
1014	{
1015	for (int cTries = 10240; cTries > 0; cTries--)
1016	{
1017	uPort = RTRandU32Ex(cTries >= 8192 ? 49152 : 1024, 65534);
1018	vrc = RTTcpServerCreateEx(pszAddress, uPort, &hServer);
1019	if (vrc != VERR_NET_ADDRESS_IN_USE)
1020	break;
1021	}
1022	if (RT_SUCCESS(vrc))
1023	{
1024	hrc = pMachine->COMSETTER(TeleporterPort)(uPort);
1025	if (FAILED(hrc))
1026	{
1027	RTTcpServerDestroy(hServer);
1028	return VERR_GENERAL_FAILURE;
1029	}
1030	}
1031	}
1032	if (RT_FAILURE(vrc))
1033	return vrc;
1034
1035	/*
1036	* Create a one-shot timer for timing out after 5 mins.
1037	*/
1038	RTTIMERLR hTimerLR;
1039	vrc = RTTimerLRCreateEx(&hTimerLR, 0 /ns/, RTTIMER_FLAGS_CPU_ANY, teleporterDstTimeout, hServer);
1040	if (RT_SUCCESS(vrc))
1041	{
1042	vrc = RTTimerLRStart(hTimerLR, 560UINT64_C(1000000000) /ns/);
1043	if (RT_SUCCESS(vrc))
1044	{
1045	/*
1046	* Do the job, when it returns we're done.
1047	*/
1048	TeleporterStateTrg State(this, pVM, pProgress, pMachine, mControl, &hTimerLR, fStartPaused);
1049	State.mstrPassword = strPassword;
1050	State.mhServer = hServer;
1051
1052	void pvUser = static_cast<void >(static_cast<TeleporterState *>(&State));
1053	if (pProgress->setCancelCallback(teleporterProgressCancelCallback, pvUser))
1054	{
1055	LogRel(("Teleporter: Waiting for incoming VM...\n"));
1056	vrc = RTTcpServerListen(hServer, Console::teleporterTrgServeConnection, &State);
1057	pProgress->setCancelCallback(NULL, NULL);
1058
1059	bool fPowerOff = false;
1060	if (vrc == VERR_TCP_SERVER_STOP)
1061	{
1062	vrc = State.mRc;
1063	/* Power off the VM on failure unless the state callback
1064	already did that. */
1065	if (RT_FAILURE(vrc))
1066	{
1067	VMSTATE enmVMState = VMR3GetState(pVM);
1068	if ( enmVMState != VMSTATE_OFF
1069	&& enmVMState != VMSTATE_POWERING_OFF)
1070	fPowerOff = true;
1071	}
1072	}
1073	else if (vrc == VERR_TCP_SERVER_SHUTDOWN)
1074	{
1075	BOOL fCancelled = TRUE;
1076	hrc = pProgress->COMGETTER(Canceled)(&fCancelled);
1077	if (FAILED(hrc) \|\| fCancelled)
1078	{
1079	setError(E_FAIL, tr("Teleporting canceled"));
1080	vrc = VERR_SSM_CANCELLED;
1081	}
1082	else
1083	{
1084	setError(E_FAIL, tr("Teleporter timed out waiting for incoming connection"));
1085	vrc = VERR_TIMEOUT;
1086	}
1087	LogRel(("Teleporter: RTTcpServerListen aborted - %Rrc\n", vrc));
1088	fPowerOff = true;
1089	}
1090	else
1091	{
1092	LogRel(("Teleporter: Unexpected RTTcpServerListen rc: %Rrc\n", vrc));
1093	vrc = VERR_IPE_UNEXPECTED_STATUS;
1094	fPowerOff = true;
1095	}
1096
1097	if (fPowerOff)
1098	{
1099	int vrc2 = VMR3PowerOff(pVM);
1100	AssertRC(vrc2);
1101	}
1102	}
1103	else
1104	vrc = VERR_SSM_CANCELLED;
1105	}
1106
1107	RTTimerLRDestroy(hTimerLR);
1108	}
1109	RTTcpServerDestroy(hServer);
1110
1111	/*
1112	* If we change TeleporterPort above, set it back to it's original
1113	* value before returning.
1114	*/
1115	if (uPortOrg != uPort)
1116	pMachine->COMSETTER(TeleporterPort)(uPortOrg);
1117
1118	return vrc;
1119	}
1120
1121
1122	/**
1123	* Unlock the media.
1124	*
1125	* This is used in error paths.
1126	*
1127	* @param pState The teleporter state.
1128	*/
1129	static void teleporterTrgUnlockMedia(TeleporterStateTrg *pState)
1130	{
1131	if (pState->mfLockedMedia)
1132	{
1133	pState->mpControl->UnlockMedia();
1134	pState->mfLockedMedia = false;
1135	}
1136	}
1137
1138
1139	static int teleporterTcpWriteACK(TeleporterStateTrg *pState, bool fAutomaticUnlock = true)
1140	{
1141	int rc = RTTcpWrite(pState->mhSocket, "ACK\n", sizeof("ACK\n") - 1);
1142	if (RT_FAILURE(rc))
1143	{
1144	LogRel(("Teleporter: RTTcpWrite(,ACK,) -> %Rrc\n", rc));
1145	if (fAutomaticUnlock)
1146	teleporterTrgUnlockMedia(pState);
1147	}
1148	RTTcpFlush(pState->mhSocket);
1149	return rc;
1150	}
1151
1152
1153	static int teleporterTcpWriteNACK(TeleporterStateTrg *pState, int32_t rc2)
1154	{
1155	/*
1156	* Unlock media sending the NACK. That way the other doesn't have to spin
1157	* waiting to regain the locks.
1158	*/
1159	teleporterTrgUnlockMedia(pState);
1160
1161	char szMsg[64];
1162	size_t cch = RTStrPrintf(szMsg, sizeof(szMsg), "NACK=%d\n", rc2);
1163	int rc = RTTcpWrite(pState->mhSocket, szMsg, cch);
1164	if (RT_FAILURE(rc))
1165	LogRel(("Teleporter: RTTcpWrite(,%s,%zu) -> %Rrc\n", szMsg, cch, rc));
1166	RTTcpFlush(pState->mhSocket);
1167	return rc;
1168	}
1169
1170
1171	/**
1172	* @copydoc FNRTTCPSERVE
1173	*
1174	* @returns VINF_SUCCESS or VERR_TCP_SERVER_STOP.
1175	*/
1176	/static/ DECLCALLBACK(int)
1177	Console::teleporterTrgServeConnection(RTSOCKET Sock, void *pvUser)
1178	{
1179	TeleporterStateTrg pState = (TeleporterStateTrg )pvUser;
1180	pState->mhSocket = Sock;
1181
1182	/*
1183	* Say hello.
1184	*/
1185	int vrc = RTTcpWrite(Sock, g_szWelcome, sizeof(g_szWelcome) - 1);
1186	if (RT_FAILURE(vrc))
1187	{
1188	LogRel(("Teleporter: Failed to write welcome message: %Rrc\n", vrc));
1189	return VINF_SUCCESS;
1190	}
1191
1192	/*
1193	* Password (includes '\n', see teleporterTrg).
1194	*/
1195	const char *pszPassword = pState->mstrPassword.c_str();
1196	unsigned off = 0;
1197	while (pszPassword[off])
1198	{
1199	char ch;
1200	vrc = RTTcpRead(Sock, &ch, sizeof(ch), NULL);
1201	if ( RT_FAILURE(vrc)
1202	\|\| pszPassword[off] != ch)
1203	{
1204	if (RT_FAILURE(vrc))
1205	LogRel(("Teleporter: Password read failure (off=%u): %Rrc\n", off, vrc));
1206	else
1207	LogRel(("Teleporter: Invalid password (off=%u)\n", off));
1208	teleporterTcpWriteNACK(pState, VERR_AUTHENTICATION_FAILURE);
1209	return VINF_SUCCESS;
1210	}
1211	off++;
1212	}
1213	vrc = teleporterTcpWriteACK(pState);
1214	if (RT_FAILURE(vrc))
1215	return VINF_SUCCESS;
1216	LogRel(("Teleporter: Incoming VM!\n"));
1217
1218	/*
1219	* Stop the server and cancel the timeout timer.
1220	*
1221	* Note! After this point we must return VERR_TCP_SERVER_STOP, while prior
1222	* to it we must not return that value!
1223	*/
1224	RTTcpServerShutdown(pState->mhServer);
1225	RTTimerLRDestroy(*pState->mphTimerLR);
1226	*pState->mphTimerLR = NIL_RTTIMERLR;
1227
1228	/*
1229	* Command processing loop.
1230	*/
1231	bool fDone = false;
1232	for (;;)
1233	{
1234	char szCmd[128];
1235	vrc = teleporterTcpReadLine(pState, szCmd, sizeof(szCmd));
1236	if (RT_FAILURE(vrc))
1237	break;
1238
1239	if (!strcmp(szCmd, "load"))
1240	{
1241	vrc = teleporterTcpWriteACK(pState);
1242	if (RT_FAILURE(vrc))
1243	break;
1244
1245	pState->moffStream = 0;
1246	void pvUser = static_cast<void >(static_cast<TeleporterState *>(pState));
1247	vrc = VMR3LoadFromStream(pState->mpVM, &g_teleporterTcpOps, pvUser,
1248	teleporterProgressCallback, pvUser);
1249	if (RT_FAILURE(vrc))
1250	{
1251	LogRel(("Teleporter: VMR3LoadFromStream -> %Rrc\n", vrc));
1252	teleporterTcpWriteNACK(pState, vrc);
1253	break;
1254	}
1255
1256	/* The EOS might not have been read, make sure it is. */
1257	pState->mfStopReading = false;
1258	size_t cbRead;
1259	vrc = teleporterTcpOpRead(pvUser, pState->moffStream, szCmd, 1, &cbRead);
1260	if (vrc != VERR_EOF)
1261	{
1262	LogRel(("Teleporter: Draining teleporterTcpOpRead -> %Rrc\n", vrc));
1263	teleporterTcpWriteNACK(pState, vrc);
1264	break;
1265	}
1266
1267	vrc = teleporterTcpWriteACK(pState);
1268	}
1269	else if (!strcmp(szCmd, "cancel"))
1270	{
1271	/* Don't ACK this. */
1272	LogRel(("Teleporter: Received cancel command.\n"));
1273	vrc = VERR_SSM_CANCELLED;
1274	}
1275	else if (!strcmp(szCmd, "lock-media"))
1276	{
1277	HRESULT hrc = pState->mpControl->LockMedia();
1278	if (SUCCEEDED(hrc))
1279	{
1280	pState->mfLockedMedia = true;
1281	vrc = teleporterTcpWriteACK(pState);
1282	}
1283	else
1284	{
1285	vrc = VERR_FILE_LOCK_FAILED;
1286	teleporterTcpWriteNACK(pState, vrc);
1287	}
1288	}
1289	else if ( !strcmp(szCmd, "hand-over-resume")
1290	\|\| !strcmp(szCmd, "hand-over-paused"))
1291	{
1292	/*
1293	* Point of no return.
1294	*
1295	* Note! Since we cannot tell whether a VMR3Resume failure is
1296	* destructive for the source or not, we have little choice
1297	* but to ACK it first and take any failures locally.
1298	*
1299	* Ideally, we should try resume it first and then ACK (or
1300	* NACK) the request since this would reduce latency and
1301	* make it possible to recover from some VMR3Resume failures.
1302	*/
1303	if ( pState->mptrProgress->notifyPointOfNoReturn()
1304	&& pState->mfLockedMedia)
1305	{
1306	vrc = teleporterTcpWriteACK(pState);
1307	if (RT_SUCCESS(vrc))
1308	{
1309	if (!strcmp(szCmd, "hand-over-resume"))
1310	vrc = VMR3Resume(pState->mpVM);
1311	else
1312	pState->mptrConsole->setMachineState(MachineState_Paused);
1313	fDone = true;
1314	break;
1315	}
1316	}
1317	else
1318	{
1319	vrc = pState->mfLockedMedia ? VERR_WRONG_ORDER : VERR_SSM_CANCELLED;
1320	teleporterTcpWriteNACK(pState, vrc);
1321	}
1322	}
1323	else
1324	{
1325	LogRel(("Teleporter: Unknown command '%s' (%.*Rhxs)\n", szCmd, strlen(szCmd), szCmd));
1326	vrc = VERR_NOT_IMPLEMENTED;
1327	teleporterTcpWriteNACK(pState, vrc);
1328	}
1329
1330	if (RT_FAILURE(vrc))
1331	break;
1332	}
1333
1334	if (RT_SUCCESS(vrc) && !fDone)
1335	vrc = VERR_WRONG_ORDER;
1336	if (RT_FAILURE(vrc))
1337	teleporterTrgUnlockMedia(pState);
1338
1339	pState->mRc = vrc;
1340	pState->mhSocket = NIL_RTSOCKET;
1341	LogFlowFunc(("returns mRc=%Rrc\n", vrc));
1342	return VERR_TCP_SERVER_STOP;
1343	}
1344

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source: vbox/trunk/src/VBox/Main/ConsoleImplTeleporter.cpp@ 24905

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