GuestCtrlImplPrivate.h@ 78286

Last change on this file since 78286 was 77588, checked in by vboxsync, 6 years ago
Guest Control/Main: Implemented virtual guest object methods for session status changes to allow guest objects set their internal state accordingly. The guest session's object map now also keeps a (weak) pointer to the guest objects for handling the callbacks [build fix, no C++11 yet].
Property svn:eol-style set to `native` Property svn:keywords set to `Author Date Id Revision`
File size: 35.3 KB

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1	/* $Id: GuestCtrlImplPrivate.h 77588 2019-03-06 16:47:50Z vboxsync $ */
2	/** @file
3	* Internal helpers/structures for guest control functionality.
4	*/
5
6	/*
7	* Copyright (C) 2011-2019 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 MAIN_INCLUDED_GuestCtrlImplPrivate_h
19	#define MAIN_INCLUDED_GuestCtrlImplPrivate_h
20	#ifndef RT_WITHOUT_PRAGMA_ONCE
21	# pragma once
22	#endif
23
24	#include "ConsoleImpl.h"
25	#include "Global.h"
26
27	#include <iprt/asm.h>
28	#include <iprt/env.h>
29	#include <iprt/semaphore.h>
30	#include <iprt/cpp/utils.h>
31
32	#include <VBox/com/com.h>
33	#include <VBox/com/ErrorInfo.h>
34	#include <VBox/com/string.h>
35	#include <VBox/com/VirtualBox.h>
36	#include <VBox/err.h> /* VERR_GSTCTL_GUEST_ERROR */
37
38	#include <map>
39	#include <vector>
40
41	using namespace com;
42
43	#ifdef VBOX_WITH_GUEST_CONTROL
44	# include <VBox/GuestHost/GuestControl.h>
45	# include <VBox/HostServices/GuestControlSvc.h>
46	using namespace guestControl;
47	#endif
48
49	/** Vector holding a process' CPU affinity. */
50	typedef std::vector <LONG> ProcessAffinity;
51	/** Vector holding process startup arguments. */
52	typedef std::vector <Utf8Str> ProcessArguments;
53
54	class GuestProcessStreamBlock;
55	class GuestSession;
56
57
58	/**
59	* Simple structure mantaining guest credentials.
60	*/
61	struct GuestCredentials
62	{
63	Utf8Str mUser;
64	Utf8Str mPassword;
65	Utf8Str mDomain;
66	};
67
68
69	/**
70	* Wrapper around the RTEnv API, unusable base class.
71	*
72	* @remarks Feel free to elevate this class to iprt/cpp/env.h as RTCEnv.
73	*/
74	class GuestEnvironmentBase
75	{
76	public:
77	/**
78	* Default constructor.
79	*
80	* The user must invoke one of the init methods before using the object.
81	*/
82	GuestEnvironmentBase(void)
83	: m_hEnv(NIL_RTENV)
84	, m_cRefs(1)
85	{ }
86
87	/**
88	* Destructor.
89	*/
90	virtual ~GuestEnvironmentBase(void)
91	{
92	Assert(m_cRefs <= 1);
93	int rc = RTEnvDestroy(m_hEnv); AssertRC(rc);
94	m_hEnv = NIL_RTENV;
95	}
96
97	/**
98	* Retains a reference to this object.
99	* @returns New reference count.
100	* @remarks Sharing an object is currently only safe if no changes are made to
101	* it because RTENV does not yet implement any locking. For the only
102	* purpose we need this, implementing IGuestProcess::environment by
103	* using IGuestSession::environmentBase, that's fine as the session
104	* base environment is immutable.
105	*/
106	uint32_t retain(void)
107	{
108	uint32_t cRefs = ASMAtomicIncU32(&m_cRefs);
109	Assert(cRefs > 1); Assert(cRefs < _1M);
110	return cRefs;
111
112	}
113	/** Useful shortcut. */
114	uint32_t retainConst(void) const { return unconst(this)->retain(); }
115
116	/**
117	* Releases a reference to this object, deleting the object when reaching zero.
118	* @returns New reference count.
119	*/
120	uint32_t release(void)
121	{
122	uint32_t cRefs = ASMAtomicDecU32(&m_cRefs);
123	Assert(cRefs < _1M);
124	if (cRefs == 0)
125	delete this;
126	return cRefs;
127	}
128
129	/** Useful shortcut. */
130	uint32_t releaseConst(void) const { return unconst(this)->retain(); }
131
132	/**
133	* Checks if the environment has been successfully initialized or not.
134	*
135	* @returns @c true if initialized, @c false if not.
136	*/
137	bool isInitialized(void) const
138	{
139	return m_hEnv != NIL_RTENV;
140	}
141
142	/**
143	* Returns the variable count.
144	* @return Number of variables.
145	* @sa RTEnvCountEx
146	*/
147	uint32_t count(void) const
148	{
149	return RTEnvCountEx(m_hEnv);
150	}
151
152	/**
153	* Deletes the environment change record entirely.
154	*
155	* The count() method will return zero after this call.
156	*
157	* @sa RTEnvReset
158	*/
159	void reset(void)
160	{
161	int rc = RTEnvReset(m_hEnv);
162	AssertRC(rc);
163	}
164
165	/**
166	* Exports the environment change block as an array of putenv style strings.
167	*
168	*
169	* @returns VINF_SUCCESS or VERR_NO_MEMORY.
170	* @param pArray The output array.
171	*/
172	int queryPutEnvArray(std::vector<com::Utf8Str> *pArray) const
173	{
174	uint32_t cVars = RTEnvCountEx(m_hEnv);
175	try
176	{
177	pArray->resize(cVars);
178	for (uint32_t iVar = 0; iVar < cVars; iVar++)
179	{
180	const char *psz = RTEnvGetByIndexRawEx(m_hEnv, iVar);
181	AssertReturn(psz, VERR_INTERNAL_ERROR_3); /* someone is racing us! */
182	(*pArray)[iVar] = psz;
183	}
184	return VINF_SUCCESS;
185	}
186	catch (std::bad_alloc &)
187	{
188	return VERR_NO_MEMORY;
189	}
190	}
191
192	/**
193	* Applies an array of putenv style strings.
194	*
195	* @returns IPRT status code.
196	* @param rArray The array with the putenv style strings.
197	* @sa RTEnvPutEnvEx
198	*/
199	int applyPutEnvArray(const std::vector<com::Utf8Str> &rArray)
200	{
201	size_t cArray = rArray.size();
202	for (size_t i = 0; i < cArray; i++)
203	{
204	int rc = RTEnvPutEx(m_hEnv, rArray[i].c_str());
205	if (RT_FAILURE(rc))
206	return rc;
207	}
208	return VINF_SUCCESS;
209	}
210
211	/**
212	* Applies the changes from another environment to this.
213	*
214	* @returns IPRT status code.
215	* @param rChanges Reference to an environment which variables will be
216	* imported and, if it's a change record, schedule
217	* variable unsets will be applied.
218	* @sa RTEnvApplyChanges
219	*/
220	int applyChanges(const GuestEnvironmentBase &rChanges)
221	{
222	return RTEnvApplyChanges(m_hEnv, rChanges.m_hEnv);
223	}
224
225	/**
226	* See RTEnvQueryUtf8Block for details.
227	* @returns IPRT status code.
228	* @param ppszzBlock Where to return the block pointer.
229	* @param pcbBlock Where to optionally return the block size.
230	* @sa RTEnvQueryUtf8Block
231	*/
232	int queryUtf8Block(char *ppszzBlock, size_t pcbBlock)
233	{
234	return RTEnvQueryUtf8Block(m_hEnv, true /fSorted/, ppszzBlock, pcbBlock);
235	}
236
237	/**
238	* Frees what queryUtf8Block returned, NULL ignored.
239	* @sa RTEnvFreeUtf8Block
240	*/
241	static void freeUtf8Block(char *pszzBlock)
242	{
243	return RTEnvFreeUtf8Block(pszzBlock);
244	}
245
246	/**
247	* Applies a block on the format returned by queryUtf8Block.
248	*
249	* @returns IPRT status code.
250	* @param pszzBlock Pointer to the block.
251	* @param cbBlock The size of the block.
252	* @param fNoEqualMeansUnset Whether the lack of a '=' (equal) sign in a
253	* string means it should be unset (@c true), or if
254	* it means the variable should be defined with an
255	* empty value (@c false, the default).
256	* @todo move this to RTEnv!
257	*/
258	int copyUtf8Block(const char *pszzBlock, size_t cbBlock, bool fNoEqualMeansUnset = false)
259	{
260	int rc = VINF_SUCCESS;
261	while (cbBlock > 0 && *pszzBlock != '\0')
262	{
263	const char pszEnd = (const char )memchr(pszzBlock, '\0', cbBlock);
264	if (!pszEnd)
265	return VERR_BUFFER_UNDERFLOW;
266	int rc2;
267	if (fNoEqualMeansUnset \|\| strchr(pszzBlock, '='))
268	rc2 = RTEnvPutEx(m_hEnv, pszzBlock);
269	else
270	rc2 = RTEnvSetEx(m_hEnv, pszzBlock, "");
271	if (RT_FAILURE(rc2) && RT_SUCCESS(rc))
272	rc = rc2;
273
274	/* Advance. */
275	cbBlock -= pszEnd - pszzBlock;
276	if (cbBlock < 2)
277	return VERR_BUFFER_UNDERFLOW;
278	cbBlock--;
279	pszzBlock = pszEnd + 1;
280	}
281
282	/* The remainder must be zero padded. */
283	if (RT_SUCCESS(rc))
284	{
285	if (ASMMemIsZero(pszzBlock, cbBlock))
286	return VINF_SUCCESS;
287	return VERR_TOO_MUCH_DATA;
288	}
289	return rc;
290	}
291
292	/**
293	* Get an environment variable.
294	*
295	* @returns IPRT status code.
296	* @param rName The variable name.
297	* @param pValue Where to return the value.
298	* @sa RTEnvGetEx
299	*/
300	int getVariable(const com::Utf8Str &rName, com::Utf8Str *pValue) const
301	{
302	size_t cchNeeded;
303	int rc = RTEnvGetEx(m_hEnv, rName.c_str(), NULL, 0, &cchNeeded);
304	if ( RT_SUCCESS(rc)
305	\|\| rc == VERR_BUFFER_OVERFLOW)
306	{
307	try
308	{
309	pValue->reserve(cchNeeded + 1);
310	rc = RTEnvGetEx(m_hEnv, rName.c_str(), pValue->mutableRaw(), pValue->capacity(), NULL);
311	pValue->jolt();
312	}
313	catch (std::bad_alloc &)
314	{
315	rc = VERR_NO_STR_MEMORY;
316	}
317	}
318	return rc;
319	}
320
321	/**
322	* Checks if the given variable exists.
323	*
324	* @returns @c true if it exists, @c false if not or if it's an scheduled unset
325	* in a environment change record.
326	* @param rName The variable name.
327	* @sa RTEnvExistEx
328	*/
329	bool doesVariableExist(const com::Utf8Str &rName) const
330	{
331	return RTEnvExistEx(m_hEnv, rName.c_str());
332	}
333
334	/**
335	* Set an environment variable.
336	*
337	* @returns IPRT status code.
338	* @param rName The variable name.
339	* @param rValue The value of the variable.
340	* @sa RTEnvSetEx
341	*/
342	int setVariable(const com::Utf8Str &rName, const com::Utf8Str &rValue)
343	{
344	return RTEnvSetEx(m_hEnv, rName.c_str(), rValue.c_str());
345	}
346
347	/**
348	* Unset an environment variable.
349	*
350	* @returns IPRT status code.
351	* @param rName The variable name.
352	* @sa RTEnvUnsetEx
353	*/
354	int unsetVariable(const com::Utf8Str &rName)
355	{
356	return RTEnvUnsetEx(m_hEnv, rName.c_str());
357	}
358
359	protected:
360	/**
361	* Copy constructor.
362	* @throws HRESULT
363	*/
364	GuestEnvironmentBase(const GuestEnvironmentBase &rThat, bool fChangeRecord)
365	: m_hEnv(NIL_RTENV)
366	, m_cRefs(1)
367	{
368	int rc = cloneCommon(rThat, fChangeRecord);
369	if (RT_FAILURE(rc))
370	throw (Global::vboxStatusCodeToCOM(rc));
371	}
372
373	/**
374	* Common clone/copy method with type conversion abilities.
375	*
376	* @returns IPRT status code.
377	* @param rThat The object to clone.
378	* @param fChangeRecord Whether the this instance is a change record (true)
379	* or normal (false) environment.
380	*/
381	int cloneCommon(const GuestEnvironmentBase &rThat, bool fChangeRecord)
382	{
383	int rc = VINF_SUCCESS;
384	RTENV hNewEnv = NIL_RTENV;
385	if (rThat.m_hEnv != NIL_RTENV)
386	{
387	/*
388	* Clone it.
389	*/
390	if (RTEnvIsChangeRecord(rThat.m_hEnv) == fChangeRecord)
391	rc = RTEnvClone(&hNewEnv, rThat.m_hEnv);
392	else
393	{
394	/* Need to type convert it. */
395	if (fChangeRecord)
396	rc = RTEnvCreateChangeRecord(&hNewEnv);
397	else
398	rc = RTEnvCreate(&hNewEnv);
399	if (RT_SUCCESS(rc))
400	{
401	rc = RTEnvApplyChanges(hNewEnv, rThat.m_hEnv);
402	if (RT_FAILURE(rc))
403	RTEnvDestroy(hNewEnv);
404	}
405	}
406	}
407	else
408	{
409	/*
410	* Create an empty one so the object works smoothly.
411	* (Relevant for GuestProcessStartupInfo and internal commands.)
412	*/
413	if (fChangeRecord)
414	rc = RTEnvCreateChangeRecord(&hNewEnv);
415	else
416	rc = RTEnvCreate(&hNewEnv);
417	}
418	if (RT_SUCCESS(rc))
419	{
420	RTEnvDestroy(m_hEnv);
421	m_hEnv = hNewEnv;
422	}
423	return rc;
424	}
425
426
427	/** The environment change record. */
428	RTENV m_hEnv;
429	/** Reference counter. */
430	uint32_t volatile m_cRefs;
431	};
432
433	class GuestEnvironmentChanges;
434
435
436	/**
437	* Wrapper around the RTEnv API for a normal environment.
438	*/
439	class GuestEnvironment : public GuestEnvironmentBase
440	{
441	public:
442	/**
443	* Default constructor.
444	*
445	* The user must invoke one of the init methods before using the object.
446	*/
447	GuestEnvironment(void)
448	: GuestEnvironmentBase()
449	{ }
450
451	/**
452	* Copy operator.
453	* @param rThat The object to copy.
454	* @throws HRESULT
455	*/
456	GuestEnvironment(const GuestEnvironment &rThat)
457	: GuestEnvironmentBase(rThat, false /fChangeRecord/)
458	{ }
459
460	/**
461	* Copy operator.
462	* @param rThat The object to copy.
463	* @throws HRESULT
464	*/
465	GuestEnvironment(const GuestEnvironmentBase &rThat)
466	: GuestEnvironmentBase(rThat, false /fChangeRecord/)
467	{ }
468
469	/**
470	* Initialize this as a normal environment block.
471	* @returns IPRT status code.
472	*/
473	int initNormal(void)
474	{
475	AssertReturn(m_hEnv == NIL_RTENV, VERR_WRONG_ORDER);
476	return RTEnvCreate(&m_hEnv);
477	}
478
479	/**
480	* Replaces this environemnt with that in @a rThat.
481	*
482	* @returns IPRT status code
483	* @param rThat The environment to copy. If it's a different type
484	* we'll convert the data to a normal environment block.
485	*/
486	int copy(const GuestEnvironmentBase &rThat)
487	{
488	return cloneCommon(rThat, false /fChangeRecord/);
489	}
490
491	/**
492	* @copydoc copy()
493	*/
494	GuestEnvironment &operator=(const GuestEnvironmentBase &rThat)
495	{
496	int rc = cloneCommon(rThat, true /fChangeRecord/);
497	if (RT_FAILURE(rc))
498	throw (Global::vboxStatusCodeToCOM(rc));
499	return *this;
500	}
501
502	/** @copydoc copy() */
503	GuestEnvironment &operator=(const GuestEnvironment &rThat)
504	{ return operator=((const GuestEnvironmentBase &)rThat); }
505
506	/** @copydoc copy() */
507	GuestEnvironment &operator=(const GuestEnvironmentChanges &rThat)
508	{ return operator=((const GuestEnvironmentBase &)rThat); }
509
510	};
511
512
513	/**
514	* Wrapper around the RTEnv API for a environment change record.
515	*
516	* This class is used as a record of changes to be applied to a different
517	* environment block (in VBoxService before launching a new process).
518	*/
519	class GuestEnvironmentChanges : public GuestEnvironmentBase
520	{
521	public:
522	/**
523	* Default constructor.
524	*
525	* The user must invoke one of the init methods before using the object.
526	*/
527	GuestEnvironmentChanges(void)
528	: GuestEnvironmentBase()
529	{ }
530
531	/**
532	* Copy operator.
533	* @param rThat The object to copy.
534	* @throws HRESULT
535	*/
536	GuestEnvironmentChanges(const GuestEnvironmentChanges &rThat)
537	: GuestEnvironmentBase(rThat, true /fChangeRecord/)
538	{ }
539
540	/**
541	* Copy operator.
542	* @param rThat The object to copy.
543	* @throws HRESULT
544	*/
545	GuestEnvironmentChanges(const GuestEnvironmentBase &rThat)
546	: GuestEnvironmentBase(rThat, true /fChangeRecord/)
547	{ }
548
549	/**
550	* Initialize this as a environment change record.
551	* @returns IPRT status code.
552	*/
553	int initChangeRecord(void)
554	{
555	AssertReturn(m_hEnv == NIL_RTENV, VERR_WRONG_ORDER);
556	return RTEnvCreateChangeRecord(&m_hEnv);
557	}
558
559	/**
560	* Replaces this environemnt with that in @a rThat.
561	*
562	* @returns IPRT status code
563	* @param rThat The environment to copy. If it's a different type
564	* we'll convert the data to a set of changes.
565	*/
566	int copy(const GuestEnvironmentBase &rThat)
567	{
568	return cloneCommon(rThat, true /fChangeRecord/);
569	}
570
571	/**
572	* @copydoc copy()
573	*/
574	GuestEnvironmentChanges &operator=(const GuestEnvironmentBase &rThat)
575	{
576	int rc = cloneCommon(rThat, true /fChangeRecord/);
577	if (RT_FAILURE(rc))
578	throw (Global::vboxStatusCodeToCOM(rc));
579	return *this;
580	}
581
582	/** @copydoc copy() */
583	GuestEnvironmentChanges &operator=(const GuestEnvironmentChanges &rThat)
584	{ return operator=((const GuestEnvironmentBase &)rThat); }
585
586	/** @copydoc copy() */
587	GuestEnvironmentChanges &operator=(const GuestEnvironment &rThat)
588	{ return operator=((const GuestEnvironmentBase &)rThat); }
589	};
590
591
592	/**
593	* Structure for keeping all the relevant guest directory
594	* information around.
595	*/
596	struct GuestDirectoryOpenInfo
597	{
598	/** The directory path. */
599	Utf8Str mPath;
600	/** Then open filter. */
601	Utf8Str mFilter;
602	/** Opening flags. */
603	uint32_t mFlags;
604	};
605
606
607	/**
608	* Structure for keeping all the relevant guest file
609	* information around.
610	*/
611	struct GuestFileOpenInfo
612	{
613	/** The filename. */
614	Utf8Str mFilename;
615	/** The file access mode. */
616	FileAccessMode_T mAccessMode;
617	/** The file open action. */
618	FileOpenAction_T mOpenAction;
619	/** The file sharing mode. */
620	FileSharingMode_T mSharingMode;
621	/** Octal creation mode. */
622	uint32_t mCreationMode;
623	/** Extended open flags (currently none defined). */
624	uint32_t mfOpenEx;
625	/** Initial file offset. */
626	uint64_t muOffset; /** @todo Remove this in the next protocol version. */
627	};
628
629
630	/**
631	* Structure representing information of a
632	* file system object.
633	*/
634	struct GuestFsObjData
635	{
636	/** @name Helper functions to extract the data from a certin VBoxService tool's guest stream block.
637	* @{ */
638	int FromLs(const GuestProcessStreamBlock &strmBlk, bool fLong);
639	int FromStat(const GuestProcessStreamBlock &strmBlk);
640	int FromMkTemp(const GuestProcessStreamBlock &strmBlk);
641	/** @} */
642
643	/** @name Static helper functions to work with time from stream block keys.
644	* @{ */
645	static PRTTIMESPEC TimeSpecFromKey(const GuestProcessStreamBlock &strmBlk, const Utf8Str &strKey, PRTTIMESPEC pTimeSpec);
646	static int64_t UnixEpochNsFromKey(const GuestProcessStreamBlock &strmBlk, const Utf8Str &strKey);
647	/** @} */
648
649	/** @name helper functions to work with IPRT stuff.
650	* @{ */
651	RTFMODE GetFileMode(void) const;
652	/** @} */
653
654	Utf8Str mName;
655	FsObjType_T mType;
656	Utf8Str mFileAttrs;
657	int64_t mObjectSize;
658	int64_t mAllocatedSize;
659	int64_t mAccessTime;
660	int64_t mBirthTime;
661	int64_t mChangeTime;
662	int64_t mModificationTime;
663	Utf8Str mUserName;
664	int32_t mUID;
665	int32_t mGID;
666	Utf8Str mGroupName;
667	Utf8Str mACL;
668	int64_t mNodeID;
669	uint32_t mNodeIDDevice;
670	uint32_t mNumHardLinks;
671	uint32_t mDeviceNumber;
672	uint32_t mGenerationID;
673	uint32_t mUserFlags;
674	};
675
676
677	/**
678	* Structure for keeping all the relevant guest session
679	* startup parameters around.
680	*/
681	class GuestSessionStartupInfo
682	{
683	public:
684
685	GuestSessionStartupInfo(void)
686	: mIsInternal(false /* Non-internal session */),
687	mOpenTimeoutMS(30 * 1000 /* 30s opening timeout */),
688	mOpenFlags(0 /* No opening flags set */) { }
689
690	/** The session's friendly name. Optional. */
691	Utf8Str mName;
692	/** The session's unique ID. Used to encode a context ID. */
693	uint32_t mID;
694	/** Flag indicating if this is an internal session
695	* or not. Internal session are not accessible by
696	* public API clients. */
697	bool mIsInternal;
698	/** Timeout (in ms) used for opening the session. */
699	uint32_t mOpenTimeoutMS;
700	/** Session opening flags. */
701	uint32_t mOpenFlags;
702	};
703
704
705	/**
706	* Structure for keeping all the relevant guest process
707	* startup parameters around.
708	*/
709	class GuestProcessStartupInfo
710	{
711	public:
712
713	GuestProcessStartupInfo(void)
714	: mFlags(ProcessCreateFlag_None),
715	mTimeoutMS(UINT32_MAX /* No timeout by default */),
716	mPriority(ProcessPriority_Default) { }
717
718	/** The process' friendly name. */
719	Utf8Str mName;
720	/** The executable. */
721	Utf8Str mExecutable;
722	/** Arguments vector (starting with argument \#0). */
723	ProcessArguments mArguments;
724	/** The process environment change record. */
725	GuestEnvironmentChanges mEnvironmentChanges;
726	/** Process creation flags. */
727	uint32_t mFlags;
728	/** Timeout (in ms) the process is allowed to run.
729	* Specify UINT32_MAX if no timeout (unlimited run time) is given. */
730	ULONG mTimeoutMS;
731	/** Process priority. */
732	ProcessPriority_T mPriority;
733	/** Process affinity. At the moment we
734	* only support 64 VCPUs. API and
735	* guest can do more already! */
736	uint64_t mAffinity;
737	};
738
739
740	/**
741	* Class representing the "value" side of a "key=value" pair.
742	*/
743	class GuestProcessStreamValue
744	{
745	public:
746
747	GuestProcessStreamValue(void) { }
748	GuestProcessStreamValue(const char *pszValue)
749	: mValue(pszValue) {}
750
751	GuestProcessStreamValue(const GuestProcessStreamValue& aThat)
752	: mValue(aThat.mValue) { }
753
754	Utf8Str mValue;
755	};
756
757	/** Map containing "key=value" pairs of a guest process stream. */
758	typedef std::pair< Utf8Str, GuestProcessStreamValue > GuestCtrlStreamPair;
759	typedef std::map < Utf8Str, GuestProcessStreamValue > GuestCtrlStreamPairMap;
760	typedef std::map < Utf8Str, GuestProcessStreamValue >::iterator GuestCtrlStreamPairMapIter;
761	typedef std::map < Utf8Str, GuestProcessStreamValue >::const_iterator GuestCtrlStreamPairMapIterConst;
762
763	/**
764	* Class representing a block of stream pairs (key=value). Each block in a raw guest
765	* output stream is separated by "\0\0", each pair is separated by "\0". The overall
766	* end of a guest stream is marked by "\0\0\0\0".
767	*/
768	class GuestProcessStreamBlock
769	{
770	public:
771
772	GuestProcessStreamBlock(void);
773
774	virtual ~GuestProcessStreamBlock(void);
775
776	public:
777
778	void Clear(void);
779
780	#ifdef DEBUG
781	void DumpToLog(void) const;
782	#endif
783
784	const char GetString(const char pszKey) const;
785	size_t GetCount(void) const;
786	int GetRc(void) const;
787	int GetInt64Ex(const char pszKey, int64_t piVal) const;
788	int64_t GetInt64(const char *pszKey) const;
789	int GetUInt32Ex(const char pszKey, uint32_t puVal) const;
790	uint32_t GetUInt32(const char *pszKey, uint32_t uDefault = 0) const;
791	int32_t GetInt32(const char *pszKey, int32_t iDefault = 0) const;
792
793	bool IsEmpty(void) { return mPairs.empty(); }
794
795	int SetValue(const char pszKey, const char pszValue);
796
797	protected:
798
799	GuestCtrlStreamPairMap mPairs;
800	};
801
802	/** Vector containing multiple allocated stream pair objects. */
803	typedef std::vector< GuestProcessStreamBlock > GuestCtrlStreamObjects;
804	typedef std::vector< GuestProcessStreamBlock >::iterator GuestCtrlStreamObjectsIter;
805	typedef std::vector< GuestProcessStreamBlock >::const_iterator GuestCtrlStreamObjectsIterConst;
806
807	/**
808	* Class for parsing machine-readable guest process output by VBoxService'
809	* toolbox commands ("vbox_ls", "vbox_stat" etc), aka "guest stream".
810	*/
811	class GuestProcessStream
812	{
813
814	public:
815
816	GuestProcessStream();
817
818	virtual ~GuestProcessStream();
819
820	public:
821
822	int AddData(const BYTE *pbData, size_t cbData);
823
824	void Destroy();
825
826	#ifdef DEBUG
827	void Dump(const char *pszFile);
828	#endif
829
830	size_t GetOffset() { return m_offBuffer; }
831
832	size_t GetSize() { return m_cbUsed; }
833
834	int ParseBlock(GuestProcessStreamBlock &streamBlock);
835
836	protected:
837
838	/** Currently allocated size of internal stream buffer. */
839	size_t m_cbAllocated;
840	/** Currently used size at m_offBuffer. */
841	size_t m_cbUsed;
842	/** Current byte offset within the internal stream buffer. */
843	size_t m_offBuffer;
844	/** Internal stream buffer. */
845	BYTE *m_pbBuffer;
846	};
847
848	class Guest;
849	class Progress;
850
851	class GuestTask
852	{
853
854	public:
855
856	enum TaskType
857	{
858	/** Copies a file from host to the guest. */
859	TaskType_CopyFileToGuest = 50,
860	/** Copies a file from guest to the host. */
861	TaskType_CopyFileFromGuest = 55,
862	/** Update Guest Additions by directly copying the required installer
863	* off the .ISO file, transfer it to the guest and execute the installer
864	* with system privileges. */
865	TaskType_UpdateGuestAdditions = 100
866	};
867
868	GuestTask(TaskType aTaskType, Guest aThat, Progress aProgress);
869
870	virtual ~GuestTask();
871
872	int startThread();
873
874	static int taskThread(RTTHREAD aThread, void *pvUser);
875	static int uploadProgress(unsigned uPercent, void *pvUser);
876	static HRESULT setProgressSuccess(ComObjPtr<Progress> pProgress);
877	static HRESULT setProgressErrorMsg(HRESULT hr,
878	ComObjPtr<Progress> pProgress, const char * pszText, ...);
879	static HRESULT setProgressErrorParent(HRESULT hr,
880	ComObjPtr<Progress> pProgress, ComObjPtr<Guest> pGuest);
881
882	TaskType taskType;
883	ComObjPtr<Guest> pGuest;
884	ComObjPtr<Progress> pProgress;
885	HRESULT rc;
886
887	/* Task data. */
888	Utf8Str strSource;
889	Utf8Str strDest;
890	Utf8Str strUserName;
891	Utf8Str strPassword;
892	ULONG uFlags;
893	};
894
895	class GuestWaitEventPayload
896	{
897
898	public:
899
900	GuestWaitEventPayload(void)
901	: uType(0),
902	cbData(0),
903	pvData(NULL) { }
904
905	GuestWaitEventPayload(uint32_t uTypePayload,
906	const void *pvPayload, uint32_t cbPayload)
907	: uType(0),
908	cbData(0),
909	pvData(NULL)
910	{
911	int rc = copyFrom(uTypePayload, pvPayload, cbPayload);
912	if (RT_FAILURE(rc))
913	throw rc;
914	}
915
916	virtual ~GuestWaitEventPayload(void)
917	{
918	Clear();
919	}
920
921	GuestWaitEventPayload& operator=(const GuestWaitEventPayload &that)
922	{
923	CopyFromDeep(that);
924	return *this;
925	}
926
927	public:
928
929	void Clear(void)
930	{
931	if (pvData)
932	{
933	Assert(cbData);
934	RTMemFree(pvData);
935	cbData = 0;
936	pvData = NULL;
937	}
938	uType = 0;
939	}
940
941	int CopyFromDeep(const GuestWaitEventPayload &payload)
942	{
943	return copyFrom(payload.uType, payload.pvData, payload.cbData);
944	}
945
946	const void* Raw(void) const { return pvData; }
947
948	size_t Size(void) const { return cbData; }
949
950	uint32_t Type(void) const { return uType; }
951
952	void* MutableRaw(void) { return pvData; }
953
954	Utf8Str ToString(void)
955	{
956	const char pszStr = (const char )pvData;
957	size_t cbStr = cbData;
958
959	if (RT_FAILURE(RTStrValidateEncodingEx(pszStr, cbStr,
960	RTSTR_VALIDATE_ENCODING_ZERO_TERMINATED \| RTSTR_VALIDATE_ENCODING_EXACT_LENGTH)))
961	{
962	AssertFailed();
963	return "";
964	}
965
966	return Utf8Str(pszStr, cbStr);
967	}
968
969	protected:
970
971	int copyFrom(uint32_t uTypePayload, const void *pvPayload, uint32_t cbPayload)
972	{
973	if (cbPayload > _64K) /* Paranoia. */
974	return VERR_TOO_MUCH_DATA;
975
976	Clear();
977
978	int rc = VINF_SUCCESS;
979
980	if (cbPayload)
981	{
982	pvData = RTMemAlloc(cbPayload);
983	if (pvData)
984	{
985	uType = uTypePayload;
986
987	memcpy(pvData, pvPayload, cbPayload);
988	cbData = cbPayload;
989	}
990	else
991	rc = VERR_NO_MEMORY;
992	}
993	else
994	{
995	uType = uTypePayload;
996
997	pvData = NULL;
998	cbData = 0;
999	}
1000
1001	return rc;
1002	}
1003
1004	protected:
1005
1006	/** Type of payload. */
1007	uint32_t uType;
1008	/** Size (in bytes) of payload. */
1009	uint32_t cbData;
1010	/** Pointer to actual payload data. */
1011	void *pvData;
1012	};
1013
1014	class GuestWaitEventBase
1015	{
1016
1017	protected:
1018
1019	GuestWaitEventBase(void);
1020	virtual ~GuestWaitEventBase(void);
1021
1022	public:
1023
1024	uint32_t ContextID(void) { return mCID; };
1025	int GuestResult(void) { return mGuestRc; }
1026	int Result(void) { return mRc; }
1027	GuestWaitEventPayload & Payload(void) { return mPayload; }
1028	int SignalInternal(int rc, int guestRc, const GuestWaitEventPayload *pPayload);
1029	int Wait(RTMSINTERVAL uTimeoutMS);
1030
1031	protected:
1032
1033	int Init(uint32_t uCID);
1034
1035	protected:
1036
1037	/* Shutdown indicator. */
1038	bool mfAborted;
1039	/* Associated context ID (CID). */
1040	uint32_t mCID;
1041	/** The event semaphore for triggering
1042	* the actual event. */
1043	RTSEMEVENT mEventSem;
1044	/** The event's overall result. If
1045	* set to VERR_GSTCTL_GUEST_ERROR,
1046	* mGuestRc will contain the actual
1047	* error code from the guest side. */
1048	int mRc;
1049	/** The event'S overall result from the
1050	* guest side. If used, mRc must be
1051	* set to VERR_GSTCTL_GUEST_ERROR. */
1052	int mGuestRc;
1053	/** The event's payload data. Optional. */
1054	GuestWaitEventPayload mPayload;
1055	};
1056
1057	/** List of public guest event types. */
1058	typedef std::list < VBoxEventType_T > GuestEventTypes;
1059
1060	class GuestWaitEvent : public GuestWaitEventBase
1061	{
1062
1063	public:
1064
1065	GuestWaitEvent(void);
1066	virtual ~GuestWaitEvent(void);
1067
1068	public:
1069
1070	int Init(uint32_t uCID);
1071	int Init(uint32_t uCID, const GuestEventTypes &lstEvents);
1072	int Cancel(void);
1073	const ComPtr<IEvent> Event(void) { return mEvent; }
1074	bool HasGuestError(void) const { return mRc == VERR_GSTCTL_GUEST_ERROR; }
1075	int GetGuestError(void) const { return mGuestRc; }
1076	int SignalExternal(IEvent *pEvent);
1077	const GuestEventTypes &Types(void) { return mEventTypes; }
1078	size_t TypeCount(void) { return mEventTypes.size(); }
1079
1080	protected:
1081
1082	/** List of public event types this event should
1083	* be signalled on. Optional. */
1084	GuestEventTypes mEventTypes;
1085	/** Pointer to the actual public event, if any. */
1086	ComPtr<IEvent> mEvent;
1087	};
1088	/** Map of pointers to guest events. The primary key
1089	* contains the context ID. */
1090	typedef std::map < uint32_t, GuestWaitEvent* > GuestWaitEvents;
1091	/** Map of wait events per public guest event. Nice for
1092	* faster lookups when signalling a whole event group. */
1093	typedef std::map < VBoxEventType_T, GuestWaitEvents > GuestEventGroup;
1094
1095	class GuestBase
1096	{
1097
1098	public:
1099
1100	GuestBase(void);
1101	virtual ~GuestBase(void);
1102
1103	public:
1104
1105	/** Signals a wait event using a public guest event; also used for
1106	* for external event listeners. */
1107	int signalWaitEvent(VBoxEventType_T aType, IEvent *aEvent);
1108	/** Signals a wait event using a guest rc. */
1109	int signalWaitEventInternal(PVBOXGUESTCTRLHOSTCBCTX pCbCtx, int guestRc, const GuestWaitEventPayload *pPayload);
1110	/** Signals a wait event without letting public guest events know,
1111	* extended director's cut version. */
1112	int signalWaitEventInternalEx(PVBOXGUESTCTRLHOSTCBCTX pCbCtx, int rc, int guestRc, const GuestWaitEventPayload *pPayload);
1113
1114	public:
1115
1116	int baseInit(void);
1117	void baseUninit(void);
1118	int cancelWaitEvents(void);
1119	int dispatchGeneric(PVBOXGUESTCTRLHOSTCBCTX pCtxCb, PVBOXGUESTCTRLHOSTCALLBACK pSvcCb);
1120	int generateContextID(uint32_t uSessionID, uint32_t uObjectID, uint32_t *puContextID);
1121	int registerWaitEvent(uint32_t uSessionID, uint32_t uObjectID, GuestWaitEvent **ppEvent);
1122	int registerWaitEventEx(uint32_t uSessionID, uint32_t uObjectID, const GuestEventTypes &lstEvents, GuestWaitEvent **ppEvent);
1123	int unregisterWaitEvent(GuestWaitEvent *pEvent);
1124	int waitForEvent(GuestWaitEvent pEvent, uint32_t uTimeoutMS, VBoxEventType_T pType, IEvent **ppEvent);
1125
1126	public:
1127
1128	static FsObjType_T fileModeToFsObjType(RTFMODE fMode);
1129
1130	protected:
1131
1132	/** Pointer to the console object. Needed
1133	* for HGCM (VMMDev) communication. */
1134	Console *mConsole;
1135	/** The next context ID counter component for this object. */
1136	uint32_t mNextContextID;
1137	/** Local listener for handling the waiting events
1138	* internally. */
1139	ComPtr<IEventListener> mLocalListener;
1140	/** Critical section for wait events access. */
1141	RTCRITSECT mWaitEventCritSect;
1142	/** Map of registered wait events per event group. */
1143	GuestEventGroup mWaitEventGroups;
1144	/** Map of registered wait events. */
1145	GuestWaitEvents mWaitEvents;
1146	};
1147
1148	/**
1149	* Virtual class (interface) for guest objects (processes, files, ...) --
1150	* contains all per-object callback management.
1151	*/
1152	class GuestObject : public GuestBase
1153	{
1154	friend class GuestSession;
1155
1156	public:
1157
1158	GuestObject(void);
1159	virtual ~GuestObject(void);
1160
1161	public:
1162
1163	ULONG getObjectID(void) { return mObjectID; }
1164
1165	protected:
1166
1167	/**
1168	* Called by IGuestSession when the session status has been changed.
1169	*
1170	* @returns VBox status code.
1171	* @param enmSessionStatus New session status.
1172	*/
1173	virtual int i_onSessionStatusChange(GuestSessionStatus_T enmSessionStatus) = 0;
1174
1175	/**
1176	* Called by IGuestSession right before this object gets
1177	* unregistered (removed) from the public object list.
1178	*/
1179	virtual int i_onUnregister(void) = 0;
1180
1181	/** Callback dispatcher -- must be implemented by the actual object. */
1182	virtual int i_callbackDispatcher(PVBOXGUESTCTRLHOSTCBCTX pCbCtx, PVBOXGUESTCTRLHOSTCALLBACK pSvcCb) = 0;
1183
1184	protected:
1185
1186	int bindToSession(Console pConsole, GuestSession pSession, uint32_t uObjectID);
1187	int registerWaitEvent(const GuestEventTypes &lstEvents, GuestWaitEvent **ppEvent);
1188	int sendMessage(uint32_t uFunction, uint32_t cParms, PVBOXHGCMSVCPARM paParms);
1189
1190	protected:
1191
1192	/** @name Common parameters for all derived objects. They have their own
1193	* mData structure to keep their specific data around.
1194	* @{ */
1195	/** Pointer to parent session. Per definition
1196	* this objects always lives shorter than the
1197	* parent.
1198	* @todo r=bird: When wanting to use mSession in the
1199	* IGuestProcess::getEnvironment() implementation I wanted to access
1200	* GuestSession::mData::mpBaseEnvironment. Seeing the comment in
1201	* GuestProcess::terminate() saying:
1202	* "Now only API clients still can hold references to it."
1203	* and recalling seeing similar things in VirtualBox.xidl or some such place,
1204	* I'm wondering how this "per definition" behavior is enforced. Is there any
1205	* GuestProcess:uninit() call or similar magic that invalidates objects that
1206	* GuestSession loses track of in place like GuestProcess::terminate() that I've
1207	* failed to spot?
1208	*
1209	* Please enlighten me.
1210	*/
1211	GuestSession *mSession;
1212	/** The object ID -- must be unique for each guest
1213	* object and is encoded into the context ID. Must
1214	* be set manually when initializing the object.
1215	*
1216	* For guest processes this is the internal PID,
1217	* for guest files this is the internal file ID. */
1218	uint32_t mObjectID;
1219	/** @} */
1220	};
1221	#endif /* !MAIN_INCLUDED_GuestCtrlImplPrivate_h */
1222

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source: vbox/trunk/src/VBox/Main/include/GuestCtrlImplPrivate.h@ 78286

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