GuestCtrlImplPrivate.h@ 69775

Last change on this file since 69775 was 66857, checked in by vboxsync, 8 years ago

Guest Control/Main: Event fixes (for bugref:8833):

Check for context ID collisions in registerWaitEvent().
Remove the event from the general event list as well in unregisterWaitEvent().
Take the critical section in signalWaitEventInternalEx().

Property svn:eol-style set to native
Property svn:keywords set to Author Date Id Revision

File size: 33.4 KB

Line
1	/* $Id: GuestCtrlImplPrivate.h 66857 2017-05-10 11:07:03Z vboxsync $ */
2	/** @file
3	* Internal helpers/structures for guest control functionality.
4	*/
5
6	/*
7	* Copyright (C) 2011-2017 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	#ifndef ____H_GUESTIMPLPRIVATE
19	#define ____H_GUESTIMPLPRIVATE
20
21	#include "ConsoleImpl.h"
22	#include "Global.h"
23
24	#include <iprt/asm.h>
25	#include <iprt/env.h>
26	#include <iprt/semaphore.h>
27	#include <iprt/cpp/utils.h>
28
29	#include <VBox/com/com.h>
30	#include <VBox/com/ErrorInfo.h>
31	#include <VBox/com/string.h>
32	#include <VBox/com/VirtualBox.h>
33
34	#include <map>
35	#include <vector>
36
37	using namespace com;
38
39	#ifdef VBOX_WITH_GUEST_CONTROL
40	# include <VBox/GuestHost/GuestControl.h>
41	# include <VBox/HostServices/GuestControlSvc.h>
42	using namespace guestControl;
43	#endif
44
45	/** Vector holding a process' CPU affinity. */
46	typedef std::vector <LONG> ProcessAffinity;
47	/** Vector holding process startup arguments. */
48	typedef std::vector <Utf8Str> ProcessArguments;
49
50	class GuestProcessStreamBlock;
51	class GuestSession;
52
53
54	/**
55	* Simple structure mantaining guest credentials.
56	*/
57	struct GuestCredentials
58	{
59	Utf8Str mUser;
60	Utf8Str mPassword;
61	Utf8Str mDomain;
62	};
63
64
65
66	/**
67	* Wrapper around the RTEnv API, unusable base class.
68	*
69	* @remarks Feel free to elevate this class to iprt/cpp/env.h as RTCEnv.
70	*/
71	class GuestEnvironmentBase
72	{
73	public:
74	/**
75	* Default constructor.
76	*
77	* The user must invoke one of the init methods before using the object.
78	*/
79	GuestEnvironmentBase(void)
80	: m_hEnv(NIL_RTENV)
81	, m_cRefs(1)
82	{ }
83
84	/**
85	* Destructor.
86	*/
87	virtual ~GuestEnvironmentBase(void)
88	{
89	Assert(m_cRefs <= 1);
90	int rc = RTEnvDestroy(m_hEnv); AssertRC(rc);
91	m_hEnv = NIL_RTENV;
92	}
93
94	/**
95	* Retains a reference to this object.
96	* @returns New reference count.
97	* @remarks Sharing an object is currently only safe if no changes are made to
98	* it because RTENV does not yet implement any locking. For the only
99	* purpose we need this, implementing IGuestProcess::environment by
100	* using IGuestSession::environmentBase, that's fine as the session
101	* base environment is immutable.
102	*/
103	uint32_t retain(void)
104	{
105	uint32_t cRefs = ASMAtomicIncU32(&m_cRefs);
106	Assert(cRefs > 1); Assert(cRefs < _1M);
107	return cRefs;
108
109	}
110	/** Useful shortcut. */
111	uint32_t retainConst(void) const { return unconst(this)->retain(); }
112
113	/**
114	* Releases a reference to this object, deleting the object when reaching zero.
115	* @returns New reference count.
116	*/
117	uint32_t release(void)
118	{
119	uint32_t cRefs = ASMAtomicDecU32(&m_cRefs);
120	Assert(cRefs < _1M);
121	if (cRefs == 0)
122	delete this;
123	return cRefs;
124	}
125
126	/** Useful shortcut. */
127	uint32_t releaseConst(void) const { return unconst(this)->retain(); }
128
129	/**
130	* Checks if the environment has been successfully initialized or not.
131	*
132	* @returns @c true if initialized, @c false if not.
133	*/
134	bool isInitialized(void) const
135	{
136	return m_hEnv != NIL_RTENV;
137	}
138
139	/**
140	* Returns the variable count.
141	* @return Number of variables.
142	* @sa RTEnvCountEx
143	*/
144	uint32_t count(void) const
145	{
146	return RTEnvCountEx(m_hEnv);
147	}
148
149	/**
150	* Deletes the environment change record entirely.
151	*
152	* The count() method will return zero after this call.
153	*
154	* @sa RTEnvReset
155	*/
156	void reset(void)
157	{
158	int rc = RTEnvReset(m_hEnv);
159	AssertRC(rc);
160	}
161
162	/**
163	* Exports the environment change block as an array of putenv style strings.
164	*
165	*
166	* @returns VINF_SUCCESS or VERR_NO_MEMORY.
167	* @param pArray The output array.
168	*/
169	int queryPutEnvArray(std::vector<com::Utf8Str> *pArray) const
170	{
171	uint32_t cVars = RTEnvCountEx(m_hEnv);
172	try
173	{
174	pArray->resize(cVars);
175	for (uint32_t iVar = 0; iVar < cVars; iVar++)
176	{
177	const char *psz = RTEnvGetByIndexRawEx(m_hEnv, iVar);
178	AssertReturn(psz, VERR_INTERNAL_ERROR_3); /* someone is racing us! */
179	(*pArray)[iVar] = psz;
180	}
181	return VINF_SUCCESS;
182	}
183	catch (std::bad_alloc &)
184	{
185	return VERR_NO_MEMORY;
186	}
187	}
188
189	/**
190	* Applies an array of putenv style strings.
191	*
192	* @returns IPRT status code.
193	* @param rArray The array with the putenv style strings.
194	* @sa RTEnvPutEnvEx
195	*/
196	int applyPutEnvArray(const std::vector<com::Utf8Str> &rArray)
197	{
198	size_t cArray = rArray.size();
199	for (size_t i = 0; i < cArray; i++)
200	{
201	int rc = RTEnvPutEx(m_hEnv, rArray[i].c_str());
202	if (RT_FAILURE(rc))
203	return rc;
204	}
205	return VINF_SUCCESS;
206	}
207
208	/**
209	* Applies the changes from another environment to this.
210	*
211	* @returns IPRT status code.
212	* @param rChanges Reference to an environment which variables will be
213	* imported and, if it's a change record, schedule
214	* variable unsets will be applied.
215	* @sa RTEnvApplyChanges
216	*/
217	int applyChanges(const GuestEnvironmentBase &rChanges)
218	{
219	return RTEnvApplyChanges(m_hEnv, rChanges.m_hEnv);
220	}
221
222
223	/**
224	* See RTEnvQueryUtf8Block for details.
225	* @returns IPRT status code.
226	* @param ppszzBlock Where to return the block pointer.
227	* @param pcbBlock Where to optionally return the block size.
228	* @sa RTEnvQueryUtf8Block
229	*/
230	int queryUtf8Block(char *ppszzBlock, size_t pcbBlock)
231	{
232	return RTEnvQueryUtf8Block(m_hEnv, true /fSorted/, ppszzBlock, pcbBlock);
233	}
234
235	/**
236	* Frees what queryUtf8Block returned, NULL ignored.
237	* @sa RTEnvFreeUtf8Block
238	*/
239	static void freeUtf8Block(char *pszzBlock)
240	{
241	return RTEnvFreeUtf8Block(pszzBlock);
242	}
243
244	/**
245	* Applies a block on the format returned by queryUtf8Block.
246	*
247	* @returns IPRT status code.
248	* @param pszzBlock Pointer to the block.
249	* @param cbBlock The size of the block.
250	* @param fNoEqualMeansUnset Whether the lack of a '=' (equal) sign in a
251	* string means it should be unset (@c true), or if
252	* it means the variable should be defined with an
253	* empty value (@c false, the default).
254	* @todo move this to RTEnv!
255	*/
256	int copyUtf8Block(const char *pszzBlock, size_t cbBlock, bool fNoEqualMeansUnset = false)
257	{
258	int rc = VINF_SUCCESS;
259	while (cbBlock > 0 && *pszzBlock != '\0')
260	{
261	const char pszEnd = (const char )memchr(pszzBlock, '\0', cbBlock);
262	if (!pszEnd)
263	return VERR_BUFFER_UNDERFLOW;
264	int rc2;
265	if (fNoEqualMeansUnset \|\| strchr(pszzBlock, '='))
266	rc2 = RTEnvPutEx(m_hEnv, pszzBlock);
267	else
268	rc2 = RTEnvSetEx(m_hEnv, pszzBlock, "");
269	if (RT_FAILURE(rc2) && RT_SUCCESS(rc))
270	rc = rc2;
271
272	/* Advance. */
273	cbBlock -= pszEnd - pszzBlock;
274	if (cbBlock < 2)
275	return VERR_BUFFER_UNDERFLOW;
276	cbBlock--;
277	pszzBlock = pszEnd + 1;
278	}
279
280	/* The remainder must be zero padded. */
281	if (RT_SUCCESS(rc))
282	{
283	if (ASMMemIsZero(pszzBlock, cbBlock))
284	return VINF_SUCCESS;
285	return VERR_TOO_MUCH_DATA;
286	}
287	return rc;
288	}
289
290
291	/**
292	* Get an environment variable.
293	*
294	* @returns IPRT status code.
295	* @param rName The variable name.
296	* @param pValue Where to return the value.
297	* @sa RTEnvGetEx
298	*/
299	int getVariable(const com::Utf8Str &rName, com::Utf8Str *pValue) const
300	{
301	size_t cchNeeded;
302	int rc = RTEnvGetEx(m_hEnv, rName.c_str(), NULL, 0, &cchNeeded);
303	if ( RT_SUCCESS(rc)
304	\|\| rc == VERR_BUFFER_OVERFLOW)
305	{
306	try
307	{
308	pValue->reserve(cchNeeded + 1);
309	rc = RTEnvGetEx(m_hEnv, rName.c_str(), pValue->mutableRaw(), pValue->capacity(), NULL);
310	pValue->jolt();
311	}
312	catch (std::bad_alloc &)
313	{
314	rc = VERR_NO_STR_MEMORY;
315	}
316	}
317	return rc;
318	}
319
320	/**
321	* Checks if the given variable exists.
322	*
323	* @returns @c true if it exists, @c false if not or if it's an scheduled unset
324	* in a environment change record.
325	* @param rName The variable name.
326	* @sa RTEnvExistEx
327	*/
328	bool doesVariableExist(const com::Utf8Str &rName) const
329	{
330	return RTEnvExistEx(m_hEnv, rName.c_str());
331	}
332
333	/**
334	* Set an environment variable.
335	*
336	* @returns IPRT status code.
337	* @param rName The variable name.
338	* @param rValue The value of the variable.
339	* @sa RTEnvSetEx
340	*/
341	int setVariable(const com::Utf8Str &rName, const com::Utf8Str &rValue)
342	{
343	return RTEnvSetEx(m_hEnv, rName.c_str(), rValue.c_str());
344	}
345
346	/**
347	* Unset an environment variable.
348	*
349	* @returns IPRT status code.
350	* @param rName The variable name.
351	* @sa RTEnvUnsetEx
352	*/
353	int unsetVariable(const com::Utf8Str &rName)
354	{
355	return RTEnvUnsetEx(m_hEnv, rName.c_str());
356	}
357
358	protected:
359	/**
360	* Copy constructor.
361	* @throws HRESULT
362	*/
363	GuestEnvironmentBase(const GuestEnvironmentBase &rThat, bool fChangeRecord)
364	: m_hEnv(NIL_RTENV)
365	, m_cRefs(1)
366	{
367	int rc = cloneCommon(rThat, fChangeRecord);
368	if (RT_FAILURE(rc))
369	throw (Global::vboxStatusCodeToCOM(rc));
370	}
371
372	/**
373	* Common clone/copy method with type conversion abilities.
374	*
375	* @returns IPRT status code.
376	* @param rThat The object to clone.
377	* @param fChangeRecord Whether the this instance is a change record (true)
378	* or normal (false) environment.
379	*/
380	int cloneCommon(const GuestEnvironmentBase &rThat, bool fChangeRecord)
381	{
382	int rc = VINF_SUCCESS;
383	RTENV hNewEnv = NIL_RTENV;
384	if (rThat.m_hEnv != NIL_RTENV)
385	{
386	/*
387	* Clone it.
388	*/
389	if (RTEnvIsChangeRecord(rThat.m_hEnv) == fChangeRecord)
390	rc = RTEnvClone(&hNewEnv, rThat.m_hEnv);
391	else
392	{
393	/* Need to type convert it. */
394	if (fChangeRecord)
395	rc = RTEnvCreateChangeRecord(&hNewEnv);
396	else
397	rc = RTEnvCreate(&hNewEnv);
398	if (RT_SUCCESS(rc))
399	{
400	rc = RTEnvApplyChanges(hNewEnv, rThat.m_hEnv);
401	if (RT_FAILURE(rc))
402	RTEnvDestroy(hNewEnv);
403	}
404	}
405	}
406	else
407	{
408	/*
409	* Create an empty one so the object works smoothly.
410	* (Relevant for GuestProcessStartupInfo and internal commands.)
411	*/
412	if (fChangeRecord)
413	rc = RTEnvCreateChangeRecord(&hNewEnv);
414	else
415	rc = RTEnvCreate(&hNewEnv);
416	}
417	if (RT_SUCCESS(rc))
418	{
419	RTEnvDestroy(m_hEnv);
420	m_hEnv = hNewEnv;
421	}
422	return rc;
423	}
424
425
426	/** The environment change record. */
427	RTENV m_hEnv;
428	/** Reference counter. */
429	uint32_t volatile m_cRefs;
430	};
431
432	class GuestEnvironmentChanges;
433
434
435	/**
436	* Wrapper around the RTEnv API for a normal environment.
437	*/
438	class GuestEnvironment : public GuestEnvironmentBase
439	{
440	public:
441	/**
442	* Default constructor.
443	*
444	* The user must invoke one of the init methods before using the object.
445	*/
446	GuestEnvironment(void)
447	: GuestEnvironmentBase()
448	{ }
449
450	/**
451	* Copy operator.
452	* @param rThat The object to copy.
453	* @throws HRESULT
454	*/
455	GuestEnvironment(const GuestEnvironment &rThat)
456	: GuestEnvironmentBase(rThat, false /fChangeRecord/)
457	{ }
458
459	/**
460	* Copy operator.
461	* @param rThat The object to copy.
462	* @throws HRESULT
463	*/
464	GuestEnvironment(const GuestEnvironmentBase &rThat)
465	: GuestEnvironmentBase(rThat, false /fChangeRecord/)
466	{ }
467
468	/**
469	* Initialize this as a normal environment block.
470	* @returns IPRT status code.
471	*/
472	int initNormal(void)
473	{
474	AssertReturn(m_hEnv == NIL_RTENV, VERR_WRONG_ORDER);
475	return RTEnvCreate(&m_hEnv);
476	}
477
478	/**
479	* Replaces this environemnt with that in @a rThat.
480	*
481	* @returns IPRT status code
482	* @param rThat The environment to copy. If it's a different type
483	* we'll convert the data to a normal environment block.
484	*/
485	int copy(const GuestEnvironmentBase &rThat)
486	{
487	return cloneCommon(rThat, false /fChangeRecord/);
488	}
489
490	/**
491	* @copydoc copy()
492	*/
493	GuestEnvironment &operator=(const GuestEnvironmentBase &rThat)
494	{
495	int rc = cloneCommon(rThat, true /fChangeRecord/);
496	if (RT_FAILURE(rc))
497	throw (Global::vboxStatusCodeToCOM(rc));
498	return *this;
499	}
500
501	/** @copydoc copy() */
502	GuestEnvironment &operator=(const GuestEnvironment &rThat)
503	{ return operator=((const GuestEnvironmentBase &)rThat); }
504
505	/** @copydoc copy() */
506	GuestEnvironment &operator=(const GuestEnvironmentChanges &rThat)
507	{ return operator=((const GuestEnvironmentBase &)rThat); }
508
509	};
510
511
512	/**
513	* Wrapper around the RTEnv API for a environment change record.
514	*
515	* This class is used as a record of changes to be applied to a different
516	* environment block (in VBoxService before launching a new process).
517	*/
518	class GuestEnvironmentChanges : public GuestEnvironmentBase
519	{
520	public:
521	/**
522	* Default constructor.
523	*
524	* The user must invoke one of the init methods before using the object.
525	*/
526	GuestEnvironmentChanges(void)
527	: GuestEnvironmentBase()
528	{ }
529
530	/**
531	* Copy operator.
532	* @param rThat The object to copy.
533	* @throws HRESULT
534	*/
535	GuestEnvironmentChanges(const GuestEnvironmentChanges &rThat)
536	: GuestEnvironmentBase(rThat, true /fChangeRecord/)
537	{ }
538
539	/**
540	* Copy operator.
541	* @param rThat The object to copy.
542	* @throws HRESULT
543	*/
544	GuestEnvironmentChanges(const GuestEnvironmentBase &rThat)
545	: GuestEnvironmentBase(rThat, true /fChangeRecord/)
546	{ }
547
548	/**
549	* Initialize this as a environment change record.
550	* @returns IPRT status code.
551	*/
552	int initChangeRecord(void)
553	{
554	AssertReturn(m_hEnv == NIL_RTENV, VERR_WRONG_ORDER);
555	return RTEnvCreateChangeRecord(&m_hEnv);
556	}
557
558	/**
559	* Replaces this environemnt with that in @a rThat.
560	*
561	* @returns IPRT status code
562	* @param rThat The environment to copy. If it's a different type
563	* we'll convert the data to a set of changes.
564	*/
565	int copy(const GuestEnvironmentBase &rThat)
566	{
567	return cloneCommon(rThat, true /fChangeRecord/);
568	}
569
570	/**
571	* @copydoc copy()
572	*/
573	GuestEnvironmentChanges &operator=(const GuestEnvironmentBase &rThat)
574	{
575	int rc = cloneCommon(rThat, true /fChangeRecord/);
576	if (RT_FAILURE(rc))
577	throw (Global::vboxStatusCodeToCOM(rc));
578	return *this;
579	}
580
581	/** @copydoc copy() */
582	GuestEnvironmentChanges &operator=(const GuestEnvironmentChanges &rThat)
583	{ return operator=((const GuestEnvironmentBase &)rThat); }
584
585	/** @copydoc copy() */
586	GuestEnvironmentChanges &operator=(const GuestEnvironment &rThat)
587	{ return operator=((const GuestEnvironmentBase &)rThat); }
588	};
589
590
591	/**
592	* Structure for keeping all the relevant guest directory
593	* information around.
594	*/
595	struct GuestDirectoryOpenInfo
596	{
597	/** The directory path. */
598	Utf8Str mPath;
599	/** Then open filter. */
600	Utf8Str mFilter;
601	/** Opening flags. */
602	uint32_t mFlags;
603	};
604
605
606	/**
607	* Structure for keeping all the relevant guest file
608	* information around.
609	*/
610	struct GuestFileOpenInfo
611	{
612	/** The filename. */
613	Utf8Str mFileName;
614	/** The file access mode. */
615	FileAccessMode_T mAccessMode;
616	/** String translation of mFileAccessMode for the GAs. */
617	const char *mpszAccessMode;
618	/** The file open action. */
619	FileOpenAction_T mOpenAction;
620	/** String translation of mOpenAction for the GAs. */
621	const char *mpszOpenAction;
622	/** The file sharing mode. */
623	FileSharingMode_T mSharingMode;
624	/** Octal creation mode. */
625	uint32_t mCreationMode;
626	/** Extended open flags (currently none defined). */
627	uint32_t mfOpenEx;
628	};
629
630
631	/**
632	* Structure representing information of a
633	* file system object.
634	*/
635	struct GuestFsObjData
636	{
637	/** Helper function to extract the data from
638	* a certin VBoxService tool's guest stream block. */
639	int FromLs(const GuestProcessStreamBlock &strmBlk);
640	int FromMkTemp(const GuestProcessStreamBlock &strmBlk);
641	int FromStat(const GuestProcessStreamBlock &strmBlk);
642
643	int64_t mAccessTime;
644	int64_t mAllocatedSize;
645	int64_t mBirthTime;
646	int64_t mChangeTime;
647	uint32_t mDeviceNumber;
648	Utf8Str mFileAttrs;
649	uint32_t mGenerationID;
650	uint32_t mGID;
651	Utf8Str mGroupName;
652	uint32_t mNumHardLinks;
653	int64_t mModificationTime;
654	Utf8Str mName;
655	int64_t mNodeID;
656	uint32_t mNodeIDDevice;
657	int64_t mObjectSize;
658	FsObjType_T mType;
659	uint32_t mUID;
660	uint32_t mUserFlags;
661	Utf8Str mUserName;
662	Utf8Str mACL;
663	};
664
665
666	/**
667	* Structure for keeping all the relevant guest session
668	* startup parameters around.
669	*/
670	class GuestSessionStartupInfo
671	{
672	public:
673
674	GuestSessionStartupInfo(void)
675	: mIsInternal(false /* Non-internal session */),
676	mOpenTimeoutMS(30 * 1000 /* 30s opening timeout */),
677	mOpenFlags(0 /* No opening flags set */) { }
678
679	/** The session's friendly name. Optional. */
680	Utf8Str mName;
681	/** The session's unique ID. Used to encode
682	* a context ID. */
683	uint32_t mID;
684	/** Flag indicating if this is an internal session
685	* or not. Internal session are not accessible by
686	* public API clients. */
687	bool mIsInternal;
688	/** Timeout (in ms) used for opening the session. */
689	uint32_t mOpenTimeoutMS;
690	/** Session opening flags. */
691	uint32_t mOpenFlags;
692	};
693
694
695	/**
696	* Structure for keeping all the relevant guest process
697	* startup parameters around.
698	*/
699	class GuestProcessStartupInfo
700	{
701	public:
702
703	GuestProcessStartupInfo(void)
704	: mFlags(ProcessCreateFlag_None),
705	mTimeoutMS(UINT32_MAX /* No timeout by default */),
706	mPriority(ProcessPriority_Default) { }
707
708	/** The process' friendly name. */
709	Utf8Str mName;
710	/** The executable. */
711	Utf8Str mExecutable;
712	/** Arguments vector (starting with argument \#0). */
713	ProcessArguments mArguments;
714	/** The process environment change record. */
715	GuestEnvironmentChanges mEnvironmentChanges;
716	/** Process creation flags. */
717	uint32_t mFlags;
718	/** Timeout (in ms) the process is allowed to run.
719	* Specify UINT32_MAX if no timeout (unlimited run time) is given. */
720	ULONG mTimeoutMS;
721	/** Process priority. */
722	ProcessPriority_T mPriority;
723	/** Process affinity. At the moment we
724	* only support 64 VCPUs. API and
725	* guest can do more already! */
726	uint64_t mAffinity;
727	};
728
729
730	/**
731	* Class representing the "value" side of a "key=value" pair.
732	*/
733	class GuestProcessStreamValue
734	{
735	public:
736
737	GuestProcessStreamValue(void) { }
738	GuestProcessStreamValue(const char *pszValue)
739	: mValue(pszValue) {}
740
741	GuestProcessStreamValue(const GuestProcessStreamValue& aThat)
742	: mValue(aThat.mValue) { }
743
744	Utf8Str mValue;
745	};
746
747	/** Map containing "key=value" pairs of a guest process stream. */
748	typedef std::pair< Utf8Str, GuestProcessStreamValue > GuestCtrlStreamPair;
749	typedef std::map < Utf8Str, GuestProcessStreamValue > GuestCtrlStreamPairMap;
750	typedef std::map < Utf8Str, GuestProcessStreamValue >::iterator GuestCtrlStreamPairMapIter;
751	typedef std::map < Utf8Str, GuestProcessStreamValue >::const_iterator GuestCtrlStreamPairMapIterConst;
752
753	/**
754	* Class representing a block of stream pairs (key=value). Each block in a raw guest
755	* output stream is separated by "\0\0", each pair is separated by "\0". The overall
756	* end of a guest stream is marked by "\0\0\0\0".
757	*/
758	class GuestProcessStreamBlock
759	{
760	public:
761
762	GuestProcessStreamBlock(void);
763
764	virtual ~GuestProcessStreamBlock(void);
765
766	public:
767
768	void Clear(void);
769
770	#ifdef DEBUG
771	void DumpToLog(void) const;
772	#endif
773
774	int GetInt64Ex(const char pszKey, int64_t piVal) const;
775
776	int64_t GetInt64(const char *pszKey) const;
777
778	size_t GetCount(void) const;
779
780	int GetRc(void) const;
781
782	const char* GetString(const char *pszKey) const;
783
784	int GetUInt32Ex(const char pszKey, uint32_t puVal) const;
785
786	uint32_t GetUInt32(const char *pszKey) const;
787
788	bool IsEmpty(void) { return mPairs.empty(); }
789
790	int SetValue(const char pszKey, const char pszValue);
791
792	protected:
793
794	GuestCtrlStreamPairMap mPairs;
795	};
796
797	/** Vector containing multiple allocated stream pair objects. */
798	typedef std::vector< GuestProcessStreamBlock > GuestCtrlStreamObjects;
799	typedef std::vector< GuestProcessStreamBlock >::iterator GuestCtrlStreamObjectsIter;
800	typedef std::vector< GuestProcessStreamBlock >::const_iterator GuestCtrlStreamObjectsIterConst;
801
802	/**
803	* Class for parsing machine-readable guest process output by VBoxService'
804	* toolbox commands ("vbox_ls", "vbox_stat" etc), aka "guest stream".
805	*/
806	class GuestProcessStream
807	{
808
809	public:
810
811	GuestProcessStream();
812
813	virtual ~GuestProcessStream();
814
815	public:
816
817	int AddData(const BYTE *pbData, size_t cbData);
818
819	void Destroy();
820
821	#ifdef DEBUG
822	void Dump(const char *pszFile);
823	#endif
824
825	size_t GetOffset() { return m_offBuffer; }
826
827	size_t GetSize() { return m_cbUsed; }
828
829	int ParseBlock(GuestProcessStreamBlock &streamBlock);
830
831	protected:
832
833	/** Currently allocated size of internal stream buffer. */
834	size_t m_cbAllocated;
835	/** Currently used size at m_offBuffer. */
836	size_t m_cbUsed;
837	/** Current byte offset within the internal stream buffer. */
838	size_t m_offBuffer;
839	/** Internal stream buffer. */
840	BYTE *m_pbBuffer;
841	};
842
843	class Guest;
844	class Progress;
845
846	class GuestTask
847	{
848
849	public:
850
851	enum TaskType
852	{
853	/** Copies a file from host to the guest. */
854	TaskType_CopyFileToGuest = 50,
855	/** Copies a file from guest to the host. */
856	TaskType_CopyFileFromGuest = 55,
857	/** Update Guest Additions by directly copying the required installer
858	* off the .ISO file, transfer it to the guest and execute the installer
859	* with system privileges. */
860	TaskType_UpdateGuestAdditions = 100
861	};
862
863	GuestTask(TaskType aTaskType, Guest aThat, Progress aProgress);
864
865	virtual ~GuestTask();
866
867	int startThread();
868
869	static int taskThread(RTTHREAD aThread, void *pvUser);
870	static int uploadProgress(unsigned uPercent, void *pvUser);
871	static HRESULT setProgressSuccess(ComObjPtr<Progress> pProgress);
872	static HRESULT setProgressErrorMsg(HRESULT hr,
873	ComObjPtr<Progress> pProgress, const char * pszText, ...);
874	static HRESULT setProgressErrorParent(HRESULT hr,
875	ComObjPtr<Progress> pProgress, ComObjPtr<Guest> pGuest);
876
877	TaskType taskType;
878	ComObjPtr<Guest> pGuest;
879	ComObjPtr<Progress> pProgress;
880	HRESULT rc;
881
882	/* Task data. */
883	Utf8Str strSource;
884	Utf8Str strDest;
885	Utf8Str strUserName;
886	Utf8Str strPassword;
887	ULONG uFlags;
888	};
889
890	class GuestWaitEventPayload
891	{
892
893	public:
894
895	GuestWaitEventPayload(void)
896	: uType(0),
897	cbData(0),
898	pvData(NULL) { }
899
900	GuestWaitEventPayload(uint32_t uTypePayload,
901	const void *pvPayload, uint32_t cbPayload)
902	{
903	if (cbPayload)
904	{
905	pvData = RTMemAlloc(cbPayload);
906	if (pvData)
907	{
908	uType = uTypePayload;
909
910	memcpy(pvData, pvPayload, cbPayload);
911	cbData = cbPayload;
912	}
913	else /* Throw IPRT error. */
914	throw VERR_NO_MEMORY;
915	}
916	else
917	{
918	uType = uTypePayload;
919
920	pvData = NULL;
921	cbData = 0;
922	}
923	}
924
925	virtual ~GuestWaitEventPayload(void)
926	{
927	Clear();
928	}
929
930	GuestWaitEventPayload& operator=(const GuestWaitEventPayload &that)
931	{
932	CopyFromDeep(that);
933	return *this;
934	}
935
936	public:
937
938	void Clear(void)
939	{
940	if (pvData)
941	{
942	RTMemFree(pvData);
943	cbData = 0;
944	pvData = NULL;
945	}
946	uType = 0;
947	}
948
949	int CopyFromDeep(const GuestWaitEventPayload &payload)
950	{
951	Clear();
952
953	int rc = VINF_SUCCESS;
954	if (payload.cbData)
955	{
956	Assert(payload.cbData);
957	pvData = RTMemAlloc(payload.cbData);
958	if (pvData)
959	{
960	memcpy(pvData, payload.pvData, payload.cbData);
961	cbData = payload.cbData;
962	uType = payload.uType;
963	}
964	else
965	rc = VERR_NO_MEMORY;
966	}
967
968	return rc;
969	}
970
971	const void* Raw(void) const { return pvData; }
972
973	size_t Size(void) const { return cbData; }
974
975	uint32_t Type(void) const { return uType; }
976
977	void* MutableRaw(void) { return pvData; }
978
979	protected:
980
981	/** Type of payload. */
982	uint32_t uType;
983	/** Size (in bytes) of payload. */
984	uint32_t cbData;
985	/** Pointer to actual payload data. */
986	void *pvData;
987	};
988
989	class GuestWaitEventBase
990	{
991
992	protected:
993
994	GuestWaitEventBase(void);
995	virtual ~GuestWaitEventBase(void);
996
997	public:
998
999	uint32_t ContextID(void) { return mCID; };
1000	int GuestResult(void) { return mGuestRc; }
1001	int Result(void) { return mRc; }
1002	GuestWaitEventPayload & Payload(void) { return mPayload; }
1003	int SignalInternal(int rc, int guestRc, const GuestWaitEventPayload *pPayload);
1004	int Wait(RTMSINTERVAL uTimeoutMS);
1005
1006	protected:
1007
1008	int Init(uint32_t uCID);
1009
1010	protected:
1011
1012	/* Shutdown indicator. */
1013	bool mfAborted;
1014	/* Associated context ID (CID). */
1015	uint32_t mCID;
1016	/** The event semaphore for triggering
1017	* the actual event. */
1018	RTSEMEVENT mEventSem;
1019	/** The event's overall result. If
1020	* set to VERR_GSTCTL_GUEST_ERROR,
1021	* mGuestRc will contain the actual
1022	* error code from the guest side. */
1023	int mRc;
1024	/** The event'S overall result from the
1025	* guest side. If used, mRc must be
1026	* set to VERR_GSTCTL_GUEST_ERROR. */
1027	int mGuestRc;
1028	/** The event's payload data. Optional. */
1029	GuestWaitEventPayload mPayload;
1030	};
1031
1032	/** List of public guest event types. */
1033	typedef std::list < VBoxEventType_T > GuestEventTypes;
1034
1035	class GuestWaitEvent : public GuestWaitEventBase
1036	{
1037
1038	public:
1039
1040	GuestWaitEvent(uint32_t uCID);
1041	GuestWaitEvent(uint32_t uCID, const GuestEventTypes &lstEvents);
1042	virtual ~GuestWaitEvent(void);
1043
1044	public:
1045
1046	int Cancel(void);
1047	const ComPtr<IEvent> Event(void) { return mEvent; }
1048	int SignalExternal(IEvent *pEvent);
1049	const GuestEventTypes Types(void) { return mEventTypes; }
1050	size_t TypeCount(void) { return mEventTypes.size(); }
1051
1052	protected:
1053
1054	int Init(uint32_t uCID);
1055
1056	protected:
1057
1058	/** List of public event types this event should
1059	* be signalled on. Optional. */
1060	GuestEventTypes mEventTypes;
1061	/** Pointer to the actual public event, if any. */
1062	ComPtr<IEvent> mEvent;
1063	};
1064	/** Map of pointers to guest events. The primary key
1065	* contains the context ID. */
1066	typedef std::map < uint32_t, GuestWaitEvent* > GuestWaitEvents;
1067	/** Map of wait events per public guest event. Nice for
1068	* faster lookups when signalling a whole event group. */
1069	typedef std::map < VBoxEventType_T, GuestWaitEvents > GuestEventGroup;
1070
1071	class GuestBase
1072	{
1073
1074	public:
1075
1076	GuestBase(void);
1077	virtual ~GuestBase(void);
1078
1079	public:
1080
1081	/** Signals a wait event using a public guest event; also used for
1082	* for external event listeners. */
1083	int signalWaitEvent(VBoxEventType_T aType, IEvent *aEvent);
1084	/** Signals a wait event using a guest rc. */
1085	int signalWaitEventInternal(PVBOXGUESTCTRLHOSTCBCTX pCbCtx, int guestRc, const GuestWaitEventPayload *pPayload);
1086	/** Signals a wait event without letting public guest events know,
1087	* extended director's cut version. */
1088	int signalWaitEventInternalEx(PVBOXGUESTCTRLHOSTCBCTX pCbCtx, int rc, int guestRc, const GuestWaitEventPayload *pPayload);
1089	public:
1090
1091	int baseInit(void);
1092	void baseUninit(void);
1093	int cancelWaitEvents(void);
1094	int dispatchGeneric(PVBOXGUESTCTRLHOSTCBCTX pCtxCb, PVBOXGUESTCTRLHOSTCALLBACK pSvcCb);
1095	int generateContextID(uint32_t uSessionID, uint32_t uObjectID, uint32_t *puContextID);
1096	int registerWaitEvent(uint32_t uSessionID, uint32_t uObjectID, GuestWaitEvent **ppEvent);
1097	int registerWaitEvent(uint32_t uSessionID, uint32_t uObjectID, const GuestEventTypes &lstEvents, GuestWaitEvent **ppEvent);
1098	int unregisterWaitEvent(GuestWaitEvent *pEvent);
1099	int waitForEvent(GuestWaitEvent pEvent, uint32_t uTimeoutMS, VBoxEventType_T pType, IEvent **ppEvent);
1100
1101	protected:
1102
1103	/** Pointer to the console object. Needed
1104	* for HGCM (VMMDev) communication. */
1105	Console *mConsole;
1106	/** The next upcoming context ID for this object. */
1107	uint32_t mNextContextID;
1108	/** Local listener for handling the waiting events
1109	* internally. */
1110	ComPtr<IEventListener> mLocalListener;
1111	/** Critical section for wait events access. */
1112	RTCRITSECT mWaitEventCritSect;
1113	/** Map of registered wait events per event group. */
1114	GuestEventGroup mWaitEventGroups;
1115	/** Map of registered wait events. */
1116	GuestWaitEvents mWaitEvents;
1117	};
1118
1119	/**
1120	* Virtual class (interface) for guest objects (processes, files, ...) --
1121	* contains all per-object callback management.
1122	*/
1123	class GuestObject : public GuestBase
1124	{
1125
1126	public:
1127
1128	GuestObject(void);
1129	virtual ~GuestObject(void);
1130
1131	public:
1132
1133	ULONG getObjectID(void) { return mObjectID; }
1134
1135	protected:
1136
1137	virtual int i_onRemove(void) = 0;
1138
1139	/** Callback dispatcher -- must be implemented by the actual object. */
1140	virtual int i_callbackDispatcher(PVBOXGUESTCTRLHOSTCBCTX pCbCtx, PVBOXGUESTCTRLHOSTCALLBACK pSvcCb) = 0;
1141
1142	protected:
1143
1144	int bindToSession(Console pConsole, GuestSession pSession, uint32_t uObjectID);
1145	int registerWaitEvent(const GuestEventTypes &lstEvents, GuestWaitEvent **ppEvent);
1146	int sendCommand(uint32_t uFunction, uint32_t cParms, PVBOXHGCMSVCPARM paParms);
1147
1148	protected:
1149
1150	/** @name Common parameters for all derived objects. They have their own
1151	* mData structure to keep their specific data around.
1152	* @{ */
1153	/** Pointer to parent session. Per definition
1154	* this objects always lives shorter than the
1155	* parent.
1156	* @todo r=bird: When wanting to use mSession in the
1157	* IGuestProcess::getEnvironment() implementation I wanted to access
1158	* GuestSession::mData::mpBaseEnvironment. Seeing the comment in
1159	* GuestProcess::terminate() saying:
1160	* "Now only API clients still can hold references to it."
1161	* and recalling seeing similar things in VirtualBox.xidl or some such place,
1162	* I'm wondering how this "per definition" behavior is enforced. Is there any
1163	* GuestProcess:uninit() call or similar magic that invalidates objects that
1164	* GuestSession loses track of in place like GuestProcess::terminate() that I've
1165	* failed to spot?
1166	*
1167	* Please enlighten me.
1168	*/
1169	GuestSession *mSession;
1170	/** The object ID -- must be unique for each guest
1171	* object and is encoded into the context ID. Must
1172	* be set manually when initializing the object.
1173	*
1174	* For guest processes this is the internal PID,
1175	* for guest files this is the internal file ID. */
1176	uint32_t mObjectID;
1177	/** @} */
1178	};
1179	#endif // !____H_GUESTIMPLPRIVATE
1180

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source: vbox/trunk/src/VBox/Main/include/GuestCtrlImplPrivate.h@ 69775

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