GuestCtrlPrivate.cpp@ 107044

Last change on this file since 107044 was 106061, checked in by vboxsync, 2 months ago
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1	/* $Id: GuestCtrlPrivate.cpp 106061 2024-09-16 14:03:52Z vboxsync $ */
2	/** @file
3	* Internal helpers/structures for guest control functionality.
4	*/
5
6	/*
7	* Copyright (C) 2011-2024 Oracle and/or its affiliates.
8	*
9	* This file is part of VirtualBox base platform packages, as
10	* available from https://www.virtualbox.org.
11	*
12	* This program is free software; you can redistribute it and/or
13	* modify it under the terms of the GNU General Public License
14	* as published by the Free Software Foundation, in version 3 of the
15	* License.
16	*
17	* This program is distributed in the hope that it will be useful, but
18	* WITHOUT ANY WARRANTY; without even the implied warranty of
19	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
20	* General Public License for more details.
21	*
22	* You should have received a copy of the GNU General Public License
23	* along with this program; if not, see <https://www.gnu.org/licenses>.
24	*
25	* SPDX-License-Identifier: GPL-3.0-only
26	*/
27
28
29	/*********************************************************************************************************************************
30	* Header Files *
31	*********************************************************************************************************************************/
32	#define LOG_GROUP LOG_GROUP_GUEST_CONTROL
33	#include "LoggingNew.h"
34
35	#ifndef VBOX_WITH_GUEST_CONTROL
36	# error "VBOX_WITH_GUEST_CONTROL must defined in this file"
37	#endif
38	#include "GuestCtrlImplPrivate.h"
39	#include "GuestSessionImpl.h"
40	#include "VMMDev.h"
41
42	#include <iprt/asm.h>
43	#include <iprt/cpp/utils.h> /* For unconst(). */
44	#include <iprt/ctype.h>
45	#ifdef DEBUG
46	# include <iprt/file.h>
47	#endif
48	#include <iprt/fs.h>
49	#include <iprt/path.h>
50	#include <iprt/rand.h>
51	#include <iprt/time.h>
52	#include <VBox/AssertGuest.h>
53
54
55	/**
56	* Returns a stringyfied error of a guest fs error.
57	*
58	* @returns Stringyfied error.
59	* @param guestErrorInfo Guest error info to get stringyfied error for.
60	*/
61	/* static */
62	Utf8Str GuestFs::guestErrorToString(const GuestErrorInfo &guestErrorInfo)
63	{
64	Utf8Str strErr;
65
66	/** @todo pData->u32Flags: int vs. uint32 -- IPRT errors are negative !!! */
67	switch (guestErrorInfo.getVrc())
68	{
69	case VERR_ACCESS_DENIED:
70	strErr.printf(tr("Access to \"%s\" denied"), guestErrorInfo.getWhat().c_str());
71	break;
72
73	case VERR_FILE_NOT_FOUND: /* This is the most likely error. */
74	RT_FALL_THROUGH();
75	case VERR_PATH_NOT_FOUND:
76	strErr.printf(tr("No such file or directory \"%s\""), guestErrorInfo.getWhat().c_str());
77	break;
78
79	case VERR_CANT_CREATE:
80	strErr.printf(tr("File or directory \"%s\" can't be created"), guestErrorInfo.getWhat().c_str());
81	break;
82
83	case VERR_INVALID_PARAMETER:
84	strErr.printf(tr("Invalid parameter specified"));
85	break;
86
87	case VERR_INVALID_VM_HANDLE:
88	strErr.printf(tr("VMM device is not available (is the VM running?)"));
89	break;
90
91	case VERR_HGCM_SERVICE_NOT_FOUND:
92	strErr.printf(tr("The guest execution service is not available"));
93	break;
94
95	case VERR_BAD_EXE_FORMAT:
96	strErr.printf(tr("The file \"%s\" is not an executable format"), guestErrorInfo.getWhat().c_str());
97	break;
98
99	case VERR_AUTHENTICATION_FAILURE:
100	strErr.printf(tr("The user \"%s\" was not able to logon"), guestErrorInfo.getWhat().c_str());
101	break;
102
103	case VERR_INVALID_NAME:
104	strErr.printf(tr("The file \"%s\" is an invalid name"), guestErrorInfo.getWhat().c_str());
105	break;
106
107	case VERR_TIMEOUT:
108	strErr.printf(tr("The guest did not respond within time"));
109	break;
110
111	case VERR_CANCELLED:
112	strErr.printf(tr("The execution operation was canceled"));
113	break;
114
115	case VERR_GSTCTL_MAX_CID_OBJECTS_REACHED:
116	strErr.printf(tr("Maximum number of concurrent guest processes has been reached"));
117	break;
118
119	case VERR_NOT_FOUND:
120	strErr.printf(tr("The guest execution service is not ready (yet)"));
121	break;
122
123	case VERR_NOT_SUPPORTED:
124	strErr.printf(tr("Specified mode or flag is not supported on the guest"));
125	break;
126
127	default:
128	strErr.printf(tr("Unhandled error %Rrc for \"%s\" occurred on guest -- please file a bug report"),
129	guestErrorInfo.getVrc(), guestErrorInfo.getWhat().c_str());
130	break;
131	}
132
133	return strErr;
134	}
135
136	#ifdef VBOX_WITH_GSTCTL_TOOLBOX_AS_CMDS
137	/**
138	* Sets the file system object data from a given GSTCTLDIRENTRYEX struct.
139	*
140	* @returns VBox status code.
141	* @param pDirEntryEx Pointer to GSTCTLDIRENTRYEX struct to use.
142	* @param strUser Resolved user name owning the object on the guest.
143	* @param strGroups Resolved user group(s) the object on the guest is associated with.
144	* On Windows there can be multiple groups assigned. The groups are separated with ";"
145	* The first group found is always the primary group.
146	*/
147	int GuestFsObjData::FromGuestDirEntryEx(PCGSTCTLDIRENTRYEX pDirEntryEx, const Utf8Str &strUser /* = "" /, const Utf8Str &strGroups / = "" */)
148	{
149	mName = pDirEntryEx->szName;
150
151	return FromGuestFsObjInfo(&pDirEntryEx->Info, strUser, strGroups);
152	}
153
154	/**
155	* Sets the file system object data from a given GSTCTLFSOBJINFO struct.
156	*
157	* @returns VBox status code.
158	* @param pFsObjInfo Pointer to GSTCTLFSOBJINFO struct to use.
159	* @param strUser Resolved user name owning the object on the guest.
160	* @param strGroups Resolved user group(s) the object on the guest is associated with.
161	* On Windows there can be multiple groups assigned. The groups are separated with ";"
162	* The first group found is always the primary group.
163	*/
164	int GuestFsObjData::FromGuestFsObjInfo(PCGSTCTLFSOBJINFO pFsObjInfo,
165	const Utf8Str &strUser /* = "" /, const Utf8Str &strGroups / = "" */)
166	{
167	int vrc = VINF_SUCCESS;
168
169	mType = GuestBase::fileModeToFsObjType(pFsObjInfo->Attr.fMode);
170
171	mFileAttrs = "";
172	switch (mType)
173	{
174	case FsObjType_File: mFileAttrs += '-'; break;
175	case FsObjType_Directory: mFileAttrs += 'd'; break;
176	case FsObjType_Symlink: mFileAttrs += 'l'; break;
177	case FsObjType_DevChar: mFileAttrs += 'c'; break;
178	case FsObjType_DevBlock: mFileAttrs += 'b'; break;
179	case FsObjType_Fifo: mFileAttrs += 'f'; break;
180	case FsObjType_Socket: mFileAttrs += 's'; break;
181	case FsObjType_WhiteOut: mFileAttrs += 'w'; break;
182	default:
183	mFileAttrs += '?';
184	AssertFailedStmt(vrc = VERR_NOT_SUPPORTED);
185	break;
186	}
187
188	#define ADD_ATTR(a_Flag, a_Set, a_Clear) \
189	mFileAttrs += pFsObjInfo->Attr.fMode & a_Flag ? a_Set : a_Clear
190
191	ADD_ATTR(RTFS_UNIX_IRUSR, 'r', '-');
192	ADD_ATTR(RTFS_UNIX_IWUSR, 'w', '-');
193	ADD_ATTR(RTFS_UNIX_IXUSR, 'x', '-');
194
195	ADD_ATTR(RTFS_UNIX_IRGRP, 'r', '-');
196	ADD_ATTR(RTFS_UNIX_IWGRP, 'w', '-');
197	ADD_ATTR(RTFS_UNIX_IXGRP, 'x', '-');
198
199	ADD_ATTR(RTFS_UNIX_IROTH, 'r', '-');
200	ADD_ATTR(RTFS_UNIX_IWOTH, 'w', '-');
201	ADD_ATTR(RTFS_UNIX_IXOTH, 'x', '-');
202
203	/** @todo Implement sticky bits. */
204	mFileAttrs += " "; /* Reserve 3 chars for sticky bits. */
205
206	mFileAttrs += " "; /* Separator. */
207
208	ADD_ATTR(RTFS_DOS_READONLY , 'R', '-');
209	ADD_ATTR(RTFS_DOS_HIDDEN , 'H', '-');
210	ADD_ATTR(RTFS_DOS_SYSTEM , 'S', '-');
211	ADD_ATTR(RTFS_DOS_DIRECTORY , 'D', '-');
212	ADD_ATTR(RTFS_DOS_ARCHIVED , 'A', '-');
213	ADD_ATTR(RTFS_DOS_NT_DEVICE , 'd', '-');
214	ADD_ATTR(RTFS_DOS_NT_NORMAL , 'N', '-');
215	ADD_ATTR(RTFS_DOS_NT_TEMPORARY , 'T', '-');
216	ADD_ATTR(RTFS_DOS_NT_SPARSE_FILE , 'P', '-');
217	ADD_ATTR(RTFS_DOS_NT_REPARSE_POINT , 'J', '-');
218	ADD_ATTR(RTFS_DOS_NT_COMPRESSED , 'C', '-');
219	ADD_ATTR(RTFS_DOS_NT_OFFLINE , 'O', '-');
220	ADD_ATTR(RTFS_DOS_NT_NOT_CONTENT_INDEXED, 'I', '-');
221	ADD_ATTR(RTFS_DOS_NT_ENCRYPTED , 'E', '-');
222
223	#undef ADD_ATTR
224
225	mObjectSize = pFsObjInfo->cbObject;
226	mAllocatedSize = pFsObjInfo->cbAllocated;
227	mAccessTime = pFsObjInfo->AccessTime.i64NanosecondsRelativeToUnixEpoch;
228	mBirthTime = pFsObjInfo->BirthTime.i64NanosecondsRelativeToUnixEpoch;
229	mChangeTime = pFsObjInfo->ChangeTime.i64NanosecondsRelativeToUnixEpoch;
230	mModificationTime = pFsObjInfo->ModificationTime.i64NanosecondsRelativeToUnixEpoch;
231	mUserName = strUser;
232	mUID = pFsObjInfo->Attr.u.Unix.uid;
233	mGID = pFsObjInfo->Attr.u.Unix.gid;
234	mGroupName = strGroups; /** @todo Separate multiple group. */
235	mNumHardLinks = pFsObjInfo->Attr.u.Unix.cHardlinks;
236	mNodeIDDevice = pFsObjInfo->Attr.u.Unix.INodeIdDevice;
237	mNodeID = pFsObjInfo->Attr.u.Unix.INodeId;
238	mDeviceNumber = RTFS_IS_DEV_BLOCK(pFsObjInfo->Attr.fMode)
239	\|\| RTFS_IS_DEV_CHAR (pFsObjInfo->Attr.fMode) ? pFsObjInfo->Attr.u.Unix.Device : 0;
240	mGenerationID = pFsObjInfo->Attr.u.Unix.GenerationId;
241	mUserFlags = 0;
242
243	mACL = ""; /** @todo Implement ACL handling. */
244
245	return vrc;
246	}
247	#endif /* VBOX_WITH_GSTCTL_TOOLBOX_AS_CMDS */
248
249	#ifdef VBOX_WITH_GSTCTL_TOOLBOX_SUPPORT
250	/**
251	* Extracts the timespec from a given stream block key.
252	*
253	* @return Pointer to handed-in timespec, or NULL if invalid / not found.
254	* @param strmBlk Stream block to extract timespec from.
255	* @param strKey Key to get timespec for.
256	* @param pTimeSpec Where to store the extracted timespec.
257	*/
258	/* static */
259	PRTTIMESPEC GuestFsObjData::TimeSpecFromKey(const GuestToolboxStreamBlock &strmBlk, const Utf8Str &strKey, PRTTIMESPEC pTimeSpec)
260	{
261	AssertPtrReturn(pTimeSpec, NULL);
262
263	Utf8Str strTime = strmBlk.GetString(strKey.c_str());
264	if (strTime.isEmpty())
265	return NULL;
266
267	if (!RTTimeSpecFromString(pTimeSpec, strTime.c_str()))
268	return NULL;
269
270	return pTimeSpec;
271	}
272
273	/**
274	* Extracts the nanoseconds relative from Unix epoch for a given stream block key.
275	*
276	* @return Nanoseconds relative from Unix epoch, or 0 if invalid / not found.
277	* @param strmBlk Stream block to extract nanoseconds from.
278	* @param strKey Key to get nanoseconds for.
279	*/
280	/* static */
281	int64_t GuestFsObjData::UnixEpochNsFromKey(const GuestToolboxStreamBlock &strmBlk, const Utf8Str &strKey)
282	{
283	RTTIMESPEC TimeSpec;
284	if (!GuestFsObjData::TimeSpecFromKey(strmBlk, strKey, &TimeSpec))
285	return 0;
286
287	return TimeSpec.i64NanosecondsRelativeToUnixEpoch;
288	}
289
290	/**
291	* Initializes this object data with a stream block from VBOXSERVICE_TOOL_LS.
292	*
293	* This is also used by FromStat since the output should be identical given that
294	* they use the same output function on the guest side when fLong is true.
295	*
296	* @return VBox status code.
297	* @param strmBlk Stream block to use for initialization.
298	* @param fLong Whether the stream block contains long (detailed) information or not.
299	*/
300	int GuestFsObjData::FromToolboxLs(const GuestToolboxStreamBlock &strmBlk, bool fLong)
301	{
302	LogFlowFunc(("\n"));
303	#ifdef DEBUG
304	strmBlk.DumpToLog();
305	#endif
306
307	/* Object name. */
308	mName = strmBlk.GetString("name");
309	ASSERT_GUEST_RETURN(mName.isNotEmpty(), VERR_NOT_FOUND);
310
311	/* Type & attributes. */
312	bool fHaveAttribs = false;
313	char szAttribs[32];
314	memset(szAttribs, '?', sizeof(szAttribs) - 1);
315	mType = FsObjType_Unknown;
316	const char *psz = strmBlk.GetString("ftype");
317	if (psz)
318	{
319	fHaveAttribs = true;
320	szAttribs[0] = *psz;
321	switch (*psz)
322	{
323	case '-': mType = FsObjType_File; break;
324	case 'd': mType = FsObjType_Directory; break;
325	case 'l': mType = FsObjType_Symlink; break;
326	case 'c': mType = FsObjType_DevChar; break;
327	case 'b': mType = FsObjType_DevBlock; break;
328	case 'f': mType = FsObjType_Fifo; break;
329	case 's': mType = FsObjType_Socket; break;
330	case 'w': mType = FsObjType_WhiteOut; break;
331	default:
332	AssertMsgFailed(("%s\n", psz));
333	szAttribs[0] = '?';
334	fHaveAttribs = false;
335	break;
336	}
337	}
338	psz = strmBlk.GetString("owner_mask");
339	if ( psz
340	&& (psz[0] == '-' \|\| psz[0] == 'r')
341	&& (psz[1] == '-' \|\| psz[1] == 'w')
342	&& (psz[2] == '-' \|\| psz[2] == 'x'))
343	{
344	szAttribs[1] = psz[0];
345	szAttribs[2] = psz[1];
346	szAttribs[3] = psz[2];
347	fHaveAttribs = true;
348	}
349	psz = strmBlk.GetString("group_mask");
350	if ( psz
351	&& (psz[0] == '-' \|\| psz[0] == 'r')
352	&& (psz[1] == '-' \|\| psz[1] == 'w')
353	&& (psz[2] == '-' \|\| psz[2] == 'x'))
354	{
355	szAttribs[4] = psz[0];
356	szAttribs[5] = psz[1];
357	szAttribs[6] = psz[2];
358	fHaveAttribs = true;
359	}
360	psz = strmBlk.GetString("other_mask");
361	if ( psz
362	&& (psz[0] == '-' \|\| psz[0] == 'r')
363	&& (psz[1] == '-' \|\| psz[1] == 'w')
364	&& (psz[2] == '-' \|\| psz[2] == 'x'))
365	{
366	szAttribs[7] = psz[0];
367	szAttribs[8] = psz[1];
368	szAttribs[9] = psz[2];
369	fHaveAttribs = true;
370	}
371	szAttribs[10] = ' '; /* Reserve three chars for sticky bits. */
372	szAttribs[11] = ' ';
373	szAttribs[12] = ' ';
374	szAttribs[13] = ' '; /* Separator. */
375	psz = strmBlk.GetString("dos_mask");
376	if ( psz
377	&& (psz[ 0] == '-' \|\| psz[ 0] == 'R')
378	&& (psz[ 1] == '-' \|\| psz[ 1] == 'H')
379	&& (psz[ 2] == '-' \|\| psz[ 2] == 'S')
380	&& (psz[ 3] == '-' \|\| psz[ 3] == 'D')
381	&& (psz[ 4] == '-' \|\| psz[ 4] == 'A')
382	&& (psz[ 5] == '-' \|\| psz[ 5] == 'd')
383	&& (psz[ 6] == '-' \|\| psz[ 6] == 'N')
384	&& (psz[ 7] == '-' \|\| psz[ 7] == 'T')
385	&& (psz[ 8] == '-' \|\| psz[ 8] == 'P')
386	&& (psz[ 9] == '-' \|\| psz[ 9] == 'J')
387	&& (psz[10] == '-' \|\| psz[10] == 'C')
388	&& (psz[11] == '-' \|\| psz[11] == 'O')
389	&& (psz[12] == '-' \|\| psz[12] == 'I')
390	&& (psz[13] == '-' \|\| psz[13] == 'E'))
391	{
392	memcpy(&szAttribs[14], psz, 14);
393	fHaveAttribs = true;
394	}
395	szAttribs[28] = '\0';
396	if (fHaveAttribs)
397	mFileAttrs = szAttribs;
398
399	/* Object size. */
400	int vrc = strmBlk.GetInt64Ex("st_size", &mObjectSize);
401	ASSERT_GUEST_RC_RETURN(vrc, vrc);
402	strmBlk.GetInt64Ex("alloc", &mAllocatedSize);
403
404	/* INode number and device. */
405	psz = strmBlk.GetString("node_id");
406	if (!psz)
407	psz = strmBlk.GetString("cnode_id"); /* copy & past error fixed in 6.0 RC1 */
408	if (psz)
409	mNodeID = RTStrToInt64(psz);
410	mNodeIDDevice = strmBlk.GetUInt32("inode_dev"); /* (Produced by GAs prior to 6.0 RC1.) */
411
412	if (fLong)
413	{
414	/* Dates. */
415	mAccessTime = GuestFsObjData::UnixEpochNsFromKey(strmBlk, "st_atime");
416	mBirthTime = GuestFsObjData::UnixEpochNsFromKey(strmBlk, "st_birthtime");
417	mChangeTime = GuestFsObjData::UnixEpochNsFromKey(strmBlk, "st_ctime");
418	mModificationTime = GuestFsObjData::UnixEpochNsFromKey(strmBlk, "st_mtime");
419
420	/* Owner & group. */
421	mUID = strmBlk.GetInt32("uid");
422	psz = strmBlk.GetString("username");
423	if (psz)
424	mUserName = psz;
425	mGID = strmBlk.GetInt32("gid");
426	psz = strmBlk.GetString("groupname");
427	if (psz)
428	mGroupName = psz;
429
430	/* Misc attributes: */
431	mNumHardLinks = strmBlk.GetUInt32("hlinks", 1);
432	mDeviceNumber = strmBlk.GetUInt32("st_rdev");
433	mGenerationID = strmBlk.GetUInt32("st_gen");
434	mUserFlags = strmBlk.GetUInt32("st_flags");
435
436	/** @todo ACL */
437	}
438
439	LogFlowFuncLeave();
440	return VINF_SUCCESS;
441	}
442
443	/**
444	* Parses stream block output data which came from the 'rm' (vbox_rm)
445	* VBoxService toolbox command. The result will be stored in this object.
446	*
447	* @returns VBox status code.
448	* @param strmBlk Stream block output data to parse.
449	*/
450	int GuestFsObjData::FromToolboxRm(const GuestToolboxStreamBlock &strmBlk)
451	{
452	#ifdef DEBUG
453	strmBlk.DumpToLog();
454	#endif
455	/* Object name. */
456	mName = strmBlk.GetString("fname"); /* Note: RTPathRmCmd() only sets this on failure. */
457
458	/* Return the stream block's vrc. */
459	return strmBlk.GetVrc(true /* fSucceedIfNotFound */);
460	}
461
462	/**
463	* Parses stream block output data which came from the 'stat' (vbox_stat)
464	* VBoxService toolbox command. The result will be stored in this object.
465	*
466	* @returns VBox status code.
467	* @param strmBlk Stream block output data to parse.
468	*/
469	int GuestFsObjData::FromToolboxStat(const GuestToolboxStreamBlock &strmBlk)
470	{
471	/* Should be identical output. */
472	return GuestFsObjData::FromToolboxLs(strmBlk, true /fLong/);
473	}
474
475	/**
476	* Parses stream block output data which came from the 'mktemp' (vbox_mktemp)
477	* VBoxService toolbox command. The result will be stored in this object.
478	*
479	* @returns VBox status code.
480	* @param strmBlk Stream block output data to parse.
481	*/
482	int GuestFsObjData::FromToolboxMkTemp(const GuestToolboxStreamBlock &strmBlk)
483	{
484	LogFlowFunc(("\n"));
485
486	#ifdef DEBUG
487	strmBlk.DumpToLog();
488	#endif
489	/* Object name. */
490	mName = strmBlk.GetString("name");
491	ASSERT_GUEST_RETURN(mName.isNotEmpty(), VERR_NOT_FOUND);
492
493	/* Assign the stream block's vrc. */
494	int const vrc = strmBlk.GetVrc();
495	LogFlowFuncLeaveRC(vrc);
496	return vrc;
497	}
498
499	#endif /* VBOX_WITH_GSTCTL_TOOLBOX_SUPPORT */
500
501	/**
502	* Returns the IPRT-compatible file mode.
503	* Note: Only handling RTFS_TYPE_ flags are implemented for now.
504	*
505	* @return IPRT file mode.
506	*/
507	RTFMODE GuestFsObjData::GetFileMode(void) const
508	{
509	RTFMODE fMode = 0;
510
511	switch (mType)
512	{
513	case FsObjType_Directory:
514	fMode \|= RTFS_TYPE_DIRECTORY;
515	break;
516
517	case FsObjType_File:
518	fMode \|= RTFS_TYPE_FILE;
519	break;
520
521	case FsObjType_Symlink:
522	fMode \|= RTFS_TYPE_SYMLINK;
523	break;
524
525	default:
526	break;
527	}
528
529	/** @todo Implement more stuff. */
530
531	return fMode;
532	}
533
534	///////////////////////////////////////////////////////////////////////////////
535
536	GuestProcessOutputStream::GuestProcessOutputStream(void)
537	: m_cbMax(_32M)
538	, m_cbAllocated(0)
539	, m_cbUsed(0)
540	, m_offBuf(0)
541	, m_pbBuffer(NULL) { }
542
543	GuestProcessOutputStream::~GuestProcessOutputStream(void)
544	{
545	Destroy();
546	}
547
548	/**
549	* Adds data to the internal parser buffer. Useful if there
550	* are multiple rounds of adding data needed.
551	*
552	* @return VBox status code. Will return VERR_TOO_MUCH_DATA if the buffer's maximum (limit) has been reached.
553	* @param pbData Pointer to data to add.
554	* @param cbData Size (in bytes) of data to add.
555	*/
556	int GuestProcessOutputStream::AddData(const BYTE *pbData, size_t cbData)
557	{
558	AssertPtrReturn(pbData, VERR_INVALID_POINTER);
559	AssertReturn(cbData, VERR_INVALID_PARAMETER);
560
561	int vrc = VINF_SUCCESS;
562
563	/* Rewind the buffer if it's empty. */
564	size_t cbInBuf = m_cbUsed - m_offBuf;
565	bool const fAddToSet = cbInBuf == 0;
566	if (fAddToSet)
567	m_cbUsed = m_offBuf = 0;
568
569	/* Try and see if we can simply append the data. */
570	if (cbData + m_cbUsed <= m_cbAllocated)
571	{
572	memcpy(&m_pbBuffer[m_cbUsed], pbData, cbData);
573	m_cbUsed += cbData;
574	}
575	else
576	{
577	/* Move any buffered data to the front. */
578	cbInBuf = m_cbUsed - m_offBuf;
579	if (cbInBuf == 0)
580	m_cbUsed = m_offBuf = 0;
581	else if (m_offBuf) /* Do we have something to move? */
582	{
583	memmove(m_pbBuffer, &m_pbBuffer[m_offBuf], cbInBuf);
584	m_cbUsed = cbInBuf;
585	m_offBuf = 0;
586	}
587
588	/* Do we need to grow the buffer? */
589	if (cbData + m_cbUsed > m_cbAllocated)
590	{
591	size_t cbAlloc = m_cbUsed + cbData;
592	if (cbAlloc <= m_cbMax)
593	{
594	cbAlloc = RT_ALIGN_Z(cbAlloc, _64K);
595	void *pvNew = RTMemRealloc(m_pbBuffer, cbAlloc);
596	if (pvNew)
597	{
598	m_pbBuffer = (uint8_t *)pvNew;
599	m_cbAllocated = cbAlloc;
600	}
601	else
602	vrc = VERR_NO_MEMORY;
603	}
604	else
605	vrc = VERR_TOO_MUCH_DATA;
606	}
607
608	/* Finally, copy the data. */
609	if (RT_SUCCESS(vrc))
610	{
611	if (cbData + m_cbUsed <= m_cbAllocated)
612	{
613	memcpy(&m_pbBuffer[m_cbUsed], pbData, cbData);
614	m_cbUsed += cbData;
615	}
616	else
617	vrc = VERR_BUFFER_OVERFLOW;
618	}
619	}
620
621	return vrc;
622	}
623
624	/**
625	* Destroys the internal data buffer.
626	*/
627	void GuestProcessOutputStream::Destroy(void)
628	{
629	if (m_pbBuffer)
630	{
631	RTMemFree(m_pbBuffer);
632	m_pbBuffer = NULL;
633	}
634
635	m_cbAllocated = 0;
636	m_cbUsed = 0;
637	m_offBuf = 0;
638	}
639
640	#ifdef DEBUG
641	/**
642	* Dumps the raw guest process output to a file on the host.
643	* If the file on the host already exists, it will be overwritten.
644	*
645	* @param pszFile Absolute path to host file to dump the output to.
646	*/
647	void GuestProcessOutputStream::Dump(const char *pszFile)
648	{
649	LogFlowFunc(("Dumping contents of stream=0x%p (cbAlloc=%u, cbSize=%u, cbOff=%u) to %s\n",
650	m_pbBuffer, m_cbAllocated, m_cbUsed, m_offBuf, pszFile));
651
652	RTFILE hFile;
653	int vrc = RTFileOpen(&hFile, pszFile, RTFILE_O_CREATE_REPLACE \| RTFILE_O_WRITE \| RTFILE_O_DENY_WRITE);
654	if (RT_SUCCESS(vrc))
655	{
656	vrc = RTFileWrite(hFile, m_pbBuffer, m_cbUsed, NULL /* pcbWritten */);
657	RTFileClose(hFile);
658	}
659	}
660	#endif /* DEBUG */
661
662	///////////////////////////////////////////////////////////////////////////////
663
664	#ifdef VBOX_WITH_GSTCTL_TOOLBOX_SUPPORT
665	/** @todo NOT thread safe yet! */
666	/** @todo Add exception handling for STL stuff! */
667
668	GuestToolboxStreamBlock::GuestToolboxStreamBlock(void)
669	: m_fComplete(false) { }
670
671	GuestToolboxStreamBlock::~GuestToolboxStreamBlock()
672	{
673	Clear();
674	}
675
676	/**
677	* Clears (destroys) the currently stored stream pairs.
678	*/
679	void GuestToolboxStreamBlock::Clear(void)
680	{
681	m_fComplete = false;
682	m_mapPairs.clear();
683	}
684
685	#ifdef DEBUG
686	/**
687	* Dumps the currently stored stream pairs to the (debug) log.
688	*/
689	void GuestToolboxStreamBlock::DumpToLog(void) const
690	{
691	LogFlowFunc(("Dumping contents of stream block=0x%p (%ld items, fComplete=%RTbool):\n",
692	this, m_mapPairs.size(), m_fComplete));
693
694	for (GuestCtrlStreamPairMapIterConst it = m_mapPairs.begin();
695	it != m_mapPairs.end(); ++it)
696	{
697	LogFlowFunc(("\t%s=%s\n", it->first.c_str(), it->second.mValue.c_str()));
698	}
699	}
700	#endif
701
702	/**
703	* Returns a 64-bit signed integer of a specified key.
704	*
705	* @return VBox status code. VERR_NOT_FOUND if key was not found.
706	* @param pszKey Name of key to get the value for.
707	* @param piVal Pointer to value to return.
708	*/
709	int GuestToolboxStreamBlock::GetInt64Ex(const char pszKey, int64_t piVal) const
710	{
711	AssertPtrReturn(pszKey, VERR_INVALID_POINTER);
712	AssertPtrReturn(piVal, VERR_INVALID_POINTER);
713	const char *pszValue = GetString(pszKey);
714	if (pszValue)
715	{
716	*piVal = RTStrToInt64(pszValue);
717	return VINF_SUCCESS;
718	}
719	return VERR_NOT_FOUND;
720	}
721
722	/**
723	* Returns a 64-bit integer of a specified key.
724	*
725	* @return int64_t Value to return, 0 if not found / on failure.
726	* @param pszKey Name of key to get the value for.
727	*/
728	int64_t GuestToolboxStreamBlock::GetInt64(const char *pszKey) const
729	{
730	int64_t iVal;
731	if (RT_SUCCESS(GetInt64Ex(pszKey, &iVal)))
732	return iVal;
733	return 0;
734	}
735
736	/**
737	* Returns the current number of stream pairs.
738	*
739	* @return uint32_t Current number of stream pairs.
740	*/
741	size_t GuestToolboxStreamBlock::GetCount(void) const
742	{
743	return m_mapPairs.size();
744	}
745
746	/**
747	* Gets the return code (name = "rc") of this stream block.
748	*
749	* @return VBox status code.
750	* @retval VERR_NOT_FOUND if the return code string ("rc") was not found.
751	* @param fSucceedIfNotFound When set to @c true, this reports back VINF_SUCCESS when the key ("rc") is not found.
752	* This can happen with some (older) IPRT-provided tools such as RTPathRmCmd(), which only outputs
753	* rc on failure but not on success. Defaults to @c false.
754	*/
755	int GuestToolboxStreamBlock::GetVrc(bool fSucceedIfNotFound /* = false */) const
756	{
757	const char *pszValue = GetString("rc");
758	if (pszValue)
759	return RTStrToInt16(pszValue);
760	if (fSucceedIfNotFound)
761	return VINF_SUCCESS;
762	/** @todo We probably should have a dedicated error for that, VERR_GSTCTL_GUEST_TOOLBOX_whatever. */
763	return VERR_NOT_FOUND;
764	}
765
766	/**
767	* Returns a string value of a specified key.
768	*
769	* @return uint32_t Pointer to string to return, NULL if not found / on failure.
770	* @param pszKey Name of key to get the value for.
771	*/
772	const char GuestToolboxStreamBlock::GetString(const char pszKey) const
773	{
774	AssertPtrReturn(pszKey, NULL);
775
776	try
777	{
778	GuestCtrlStreamPairMapIterConst itPairs = m_mapPairs.find(pszKey);
779	if (itPairs != m_mapPairs.end())
780	return itPairs->second.mValue.c_str();
781	}
782	catch (const std::exception &ex)
783	{
784	RT_NOREF(ex);
785	}
786	return NULL;
787	}
788
789	/**
790	* Returns a 32-bit unsigned integer of a specified key.
791	*
792	* @return VBox status code. VERR_NOT_FOUND if key was not found.
793	* @param pszKey Name of key to get the value for.
794	* @param puVal Pointer to value to return.
795	*/
796	int GuestToolboxStreamBlock::GetUInt32Ex(const char pszKey, uint32_t puVal) const
797	{
798	const char *pszValue = GetString(pszKey);
799	if (pszValue)
800	{
801	*puVal = RTStrToUInt32(pszValue);
802	return VINF_SUCCESS;
803	}
804	return VERR_NOT_FOUND;
805	}
806
807	/**
808	* Returns a 32-bit signed integer of a specified key.
809	*
810	* @returns 32-bit signed value
811	* @param pszKey Name of key to get the value for.
812	* @param iDefault The default to return on error if not found.
813	*/
814	int32_t GuestToolboxStreamBlock::GetInt32(const char *pszKey, int32_t iDefault) const
815	{
816	const char *pszValue = GetString(pszKey);
817	if (pszValue)
818	{
819	int32_t iRet;
820	int vrc = RTStrToInt32Full(pszValue, 0, &iRet);
821	if (RT_SUCCESS(vrc))
822	return iRet;
823	ASSERT_GUEST_MSG_FAILED(("%s=%s\n", pszKey, pszValue));
824	}
825	return iDefault;
826	}
827
828	/**
829	* Returns a 32-bit unsigned integer of a specified key.
830	*
831	* @return uint32_t Value to return, 0 if not found / on failure.
832	* @param pszKey Name of key to get the value for.
833	* @param uDefault The default value to return.
834	*/
835	uint32_t GuestToolboxStreamBlock::GetUInt32(const char pszKey, uint32_t uDefault /= 0*/) const
836	{
837	uint32_t uVal;
838	if (RT_SUCCESS(GetUInt32Ex(pszKey, &uVal)))
839	return uVal;
840	return uDefault;
841	}
842
843	/**
844	* Sets a value to a key or deletes a key by setting a NULL value. Extended version.
845	*
846	* @return VBox status code.
847	* @param pszKey Key name to process.
848	* @param cwcKey Maximum characters of \a pszKey to process.
849	* @param pszValue Value to set. Set NULL for deleting the key.
850	* @param cwcValue Maximum characters of \a pszValue to process.
851	* @param fOverwrite Whether a key can be overwritten with a new value if it already exists. Will assert otherwise.
852	*/
853	int GuestToolboxStreamBlock::SetValueEx(const char pszKey, size_t cwcKey, const char pszValue, size_t cwcValue,
854	bool fOverwrite /* = false */)
855	{
856	AssertPtrReturn(pszKey, VERR_INVALID_POINTER);
857	AssertReturn(cwcKey, VERR_INVALID_PARAMETER);
858
859	int vrc = VINF_SUCCESS;
860	try
861	{
862	Utf8Str const strKey(pszKey, cwcKey);
863
864	/* Take a shortcut and prevent crashes on some funny versions
865	* of STL if map is empty initially. */
866	if (!m_mapPairs.empty())
867	{
868	GuestCtrlStreamPairMapIter it = m_mapPairs.find(strKey);
869	if (it != m_mapPairs.end())
870	{
871	if (pszValue == NULL)
872	m_mapPairs.erase(it);
873	else if (!fOverwrite)
874	AssertMsgFailedReturn(("Key '%*s' already exists! Value is '%s'\n", cwcKey, pszKey, m_mapPairs[strKey].mValue.c_str()),
875	VERR_ALREADY_EXISTS);
876	}
877	}
878
879	if (pszValue)
880	{
881	GuestToolboxStreamValue val(pszValue, cwcValue);
882	Log3Func(("strKey='%s', strValue='%s'\n", strKey.c_str(), val.mValue.c_str()));
883	m_mapPairs[strKey] = val;
884	}
885	}
886	catch (const std::exception &)
887	{
888	/** @todo set vrc? */
889	}
890	return vrc;
891	}
892
893	/**
894	* Sets a value to a key or deletes a key by setting a NULL value.
895	*
896	* @return VBox status code.
897	* @param pszKey Key name to process.
898	* @param pszValue Value to set. Set NULL for deleting the key.
899	*/
900	int GuestToolboxStreamBlock::SetValue(const char pszKey, const char pszValue)
901	{
902	return SetValueEx(pszKey, RTSTR_MAX, pszValue, RTSTR_MAX);
903	}
904
905	///////////////////////////////////////////////////////////////////////////////
906
907	GuestToolboxStream::GuestToolboxStream(void)
908	: m_cBlocks(0)
909	{
910	}
911
912	GuestToolboxStream::~GuestToolboxStream(void)
913	{
914	}
915
916	/**
917	* Tries to parse the next upcoming pair block within the internal buffer.
918	*
919	* Parsing behavior:
920	* - A stream can contain one or multiple blocks and is terminated by four (4) "\0".
921	* - A block (or "object") contains one or multiple key=value pairs and is terminated with two (2) "\0".
922	* - Each key=value pair is terminated by a single (1) "\0".
923	*
924	* As new data can arrive at a later time eventually completing a pair / block / stream,
925	* the algorithm needs to be careful not intepreting its current data too early. So only skip termination
926	* sequences if we really know that the termination sequence is complete. See comments down below.
927	*
928	* No locking done.
929	*
930	* @return VBox status code.
931	* @retval VINF_EOF if the stream reached its end.
932	* @param streamBlock Reference to guest stream block to fill
933	*/
934	int GuestToolboxStream::ParseBlock(GuestToolboxStreamBlock &streamBlock)
935	{
936	AssertMsgReturn(streamBlock.m_fComplete == false, ("Block object already marked as being completed\n"), VERR_WRONG_ORDER);
937
938	if ( !m_pbBuffer
939	\|\| !m_cbUsed)
940	return VINF_EOF;
941
942	AssertReturn(m_offBuf <= m_cbUsed, VERR_INVALID_PARAMETER);
943	if (m_offBuf == m_cbUsed)
944	return VINF_EOF;
945
946	char * const pszStart = (char *)&m_pbBuffer[m_offBuf];
947
948	size_t cbLeftParsed = m_offBuf < m_cbUsed ? m_cbUsed - m_offBuf : 0;
949	size_t cbLeftLookAhead = cbLeftParsed;
950
951	char pszLookAhead = pszStart; / Look ahead pointer to count terminators. */
952	char pszParsed = pszStart; / Points to data considered as being parsed already. */
953
954	Log4Func(("Current @ %zu/%zu:\n%.*Rhxd\n", m_offBuf, m_cbUsed, RT_MIN(cbLeftParsed, _1K), pszStart));
955
956	size_t cTerm = 0;
957
958	/*
959	* We have to be careful when handling single terminators ('\0') here, as we might not know yet
960	* if it's part of a multi-terminator seqeuence.
961	*
962	* So handle and skip those only when we hit a non-terminator char again.
963	*/
964	int vrc = VINF_SUCCESS;
965	while (cbLeftLookAhead)
966	{
967	/* Count consequtive terminators. */
968	if (*pszLookAhead == GUESTTOOLBOX_STRM_TERM)
969	{
970	cTerm++;
971	pszLookAhead++;
972	cbLeftLookAhead--;
973	continue;
974	}
975
976	pszParsed = pszLookAhead;
977	cbLeftParsed = cbLeftLookAhead;
978
979	/* We hit a non-terminator (again); now interpret where we are, and
980	* bail out if we need to. */
981	if (cTerm >= 2)
982	{
983	Log2Func(("Hit end of termination sequence (%zu)\n", cTerm));
984	break;
985	}
986
987	cTerm = 0; /* Reset consequtive counter. */
988
989	char * const pszPairEnd = RTStrEnd(pszParsed, cbLeftParsed);
990	if (!pszPairEnd) /* No zero terminator found (yet), try next time. */
991	break;
992
993	Log3Func(("Pair '%s' (%u)\n", pszParsed, strlen(pszParsed)));
994
995	Assert(pszPairEnd != pszParsed);
996	size_t const cbPair = (size_t)(pszPairEnd - pszParsed);
997	Assert(cbPair);
998	const char pszSep = (const char )memchr(pszParsed, '=', cbPair);
999	if (!pszSep) /* No separator found (yet), try next time. */
1000	break;
1001
1002	/* Skip the separator so that pszSep points to the actual value. */
1003	pszSep++;
1004
1005	char const * const pszKey = pszParsed;
1006	char const * const pszVal = pszSep;
1007
1008	vrc = streamBlock.SetValueEx(pszKey, pszSep - pszKey - 1, pszVal, pszPairEnd - pszVal);
1009	if (RT_FAILURE(vrc))
1010	return vrc;
1011
1012	if (cbPair >= cbLeftParsed)
1013	break;
1014
1015	/* Accounting for next iteration. */
1016	pszParsed = pszPairEnd;
1017	Assert(cbLeftParsed >= cbPair);
1018	cbLeftParsed -= cbPair;
1019
1020	pszLookAhead = pszPairEnd;
1021	cbLeftLookAhead = cbLeftParsed;
1022
1023	if (cbLeftParsed)
1024	Log4Func(("Next iteration @ %zu:\n%.*Rhxd\n", pszParsed - pszStart, cbLeftParsed, pszParsed));
1025	}
1026
1027	if (cbLeftParsed)
1028	Log4Func(("Done @ %zu:\n%.*Rhxd\n", pszParsed - pszStart, cbLeftParsed, pszParsed));
1029
1030	m_offBuf += pszParsed - pszStart; /* Only account really parsed content. */
1031	Assert(m_offBuf <= m_cbUsed);
1032
1033	/* Did we hit a block or stream termination sequence? */
1034	if (cTerm >= GUESTTOOLBOX_STRM_BLK_TERM_CNT)
1035	{
1036	if (!streamBlock.IsEmpty()) /* Only account and complete blocks which have values in it. */
1037	{
1038	m_cBlocks++;
1039	streamBlock.m_fComplete = true;
1040	#ifdef DEBUG
1041	streamBlock.DumpToLog();
1042	#endif
1043	}
1044
1045	if (cTerm >= GUESTTOOLBOX_STRM_TERM_CNT)
1046	{
1047	m_offBuf = m_cbUsed;
1048	vrc = VINF_EOF;
1049	}
1050	}
1051
1052	LogFlowThisFunc(("cbLeft=%zu, offBuffer=%zu / cbUsed=%zu, cBlocks=%zu, cTerm=%zu -> current block has %RU64 pairs (complete = %RTbool), rc=%Rrc\n",
1053	cbLeftParsed, m_offBuf, m_cbUsed, m_cBlocks, cTerm, streamBlock.GetCount(), streamBlock.IsComplete(), vrc));
1054
1055	return vrc;
1056	}
1057	#endif /* VBOX_WITH_GSTCTL_TOOLBOX_SUPPORT */
1058
1059	GuestBase::GuestBase(void)
1060	: mConsole(NULL)
1061	, mNextContextID(RTRandU32() % VBOX_GUESTCTRL_MAX_CONTEXTS)
1062	{
1063	}
1064
1065	GuestBase::~GuestBase(void)
1066	{
1067	}
1068
1069	/**
1070	* Separate initialization function for the base class.
1071	*
1072	* @returns VBox status code.
1073	*/
1074	int GuestBase::baseInit(void)
1075	{
1076	int const vrc = RTCritSectInit(&mWaitEventCritSect);
1077	LogFlowFuncLeaveRC(vrc);
1078	return vrc;
1079	}
1080
1081	/**
1082	* Separate uninitialization function for the base class.
1083	*/
1084	void GuestBase::baseUninit(void)
1085	{
1086	LogFlowThisFuncEnter();
1087
1088	/* Make sure to cancel any outstanding wait events. */
1089	int vrc2 = cancelWaitEvents();
1090	AssertRC(vrc2);
1091
1092	vrc2 = RTCritSectDelete(&mWaitEventCritSect);
1093	AssertRC(vrc2);
1094
1095	LogFlowFuncLeaveRC(vrc2);
1096	/* No return value. */
1097	}
1098
1099	/**
1100	* Cancels all outstanding wait events.
1101	*
1102	* @returns VBox status code.
1103	*/
1104	int GuestBase::cancelWaitEvents(void)
1105	{
1106	LogFlowThisFuncEnter();
1107
1108	int vrc = RTCritSectEnter(&mWaitEventCritSect);
1109	if (RT_SUCCESS(vrc))
1110	{
1111	GuestEventGroup::iterator itEventGroups = mWaitEventGroups.begin();
1112	while (itEventGroups != mWaitEventGroups.end())
1113	{
1114	GuestWaitEvents::iterator itEvents = itEventGroups->second.begin();
1115	while (itEvents != itEventGroups->second.end())
1116	{
1117	GuestWaitEvent *pEvent = itEvents->second;
1118	AssertPtr(pEvent);
1119
1120	/*
1121	* Just cancel the event, but don't remove it from the
1122	* wait events map. Don't delete it though, this (hopefully)
1123	* is done by the caller using unregisterWaitEvent().
1124	*/
1125	int vrc2 = pEvent->Cancel();
1126	AssertRC(vrc2);
1127
1128	++itEvents;
1129	}
1130
1131	++itEventGroups;
1132	}
1133
1134	int vrc2 = RTCritSectLeave(&mWaitEventCritSect);
1135	if (RT_SUCCESS(vrc))
1136	vrc = vrc2;
1137	}
1138
1139	LogFlowFuncLeaveRC(vrc);
1140	return vrc;
1141	}
1142
1143	/**
1144	* Handles generic messages not bound to a specific object type.
1145	*
1146	* @return VBox status code. VERR_NOT_FOUND if no handler has been found or VERR_NOT_SUPPORTED
1147	* if this class does not support the specified callback.
1148	* @param pCtxCb Host callback context.
1149	* @param pSvcCb Service callback data.
1150	*/
1151	int GuestBase::dispatchGeneric(PVBOXGUESTCTRLHOSTCBCTX pCtxCb, PVBOXGUESTCTRLHOSTCALLBACK pSvcCb)
1152	{
1153	LogFlowFunc(("pCtxCb=%p, pSvcCb=%p\n", pCtxCb, pSvcCb));
1154
1155	AssertPtrReturn(pCtxCb, VERR_INVALID_POINTER);
1156	AssertPtrReturn(pSvcCb, VERR_INVALID_POINTER);
1157
1158	int vrc;
1159
1160	try
1161	{
1162	Log2Func(("uFunc=%RU32, cParms=%RU32\n", pCtxCb->uMessage, pSvcCb->mParms));
1163
1164	switch (pCtxCb->uMessage)
1165	{
1166	case GUEST_MSG_PROGRESS_UPDATE:
1167	vrc = VINF_SUCCESS;
1168	break;
1169
1170	case GUEST_MSG_REPLY:
1171	{
1172	if (pSvcCb->mParms >= 4)
1173	{
1174	int idx = 1; /* Current parameter index. */
1175	CALLBACKDATA_MSG_REPLY dataCb;
1176	/* pSvcCb->mpaParms[0] always contains the context ID. */
1177	vrc = HGCMSvcGetU32(&pSvcCb->mpaParms[idx++], &dataCb.uType);
1178	AssertRCReturn(vrc, vrc);
1179	vrc = HGCMSvcGetU32(&pSvcCb->mpaParms[idx++], &dataCb.rc);
1180	AssertRCReturn(vrc, vrc);
1181	vrc = HGCMSvcGetPv(&pSvcCb->mpaParms[idx++], &dataCb.pvPayload, &dataCb.cbPayload);
1182	AssertRCReturn(vrc, vrc);
1183
1184	try
1185	{
1186	GuestWaitEventPayload evPayload(dataCb.uType, dataCb.pvPayload, dataCb.cbPayload);
1187	vrc = signalWaitEventInternal(pCtxCb, dataCb.rc, &evPayload);
1188	}
1189	catch (int vrcEx) /* Thrown by GuestWaitEventPayload constructor. */
1190	{
1191	vrc = vrcEx;
1192	}
1193	}
1194	else
1195	vrc = VERR_INVALID_PARAMETER;
1196	break;
1197	}
1198
1199	default:
1200	vrc = VERR_NOT_SUPPORTED;
1201	break;
1202	}
1203	}
1204	catch (std::bad_alloc &)
1205	{
1206	vrc = VERR_NO_MEMORY;
1207	}
1208	catch (int vrcCatch)
1209	{
1210	vrc = vrcCatch;
1211	}
1212
1213	LogFlowFuncLeaveRC(vrc);
1214	return vrc;
1215	}
1216
1217	/**
1218	* Generates a context ID (CID) by incrementing the object's count.
1219	* A CID consists of a session ID, an object ID and a count.
1220	*
1221	* Note: This function does not guarantee that the returned CID is unique;
1222	* the caller has to take care of that and eventually retry.
1223	*
1224	* @returns VBox status code.
1225	* @param uSessionID Session ID to use for CID generation.
1226	* @param uObjectID Object ID to use for CID generation.
1227	* @param puContextID Where to store the generated CID on success.
1228	*/
1229	int GuestBase::generateContextID(uint32_t uSessionID, uint32_t uObjectID, uint32_t *puContextID)
1230	{
1231	AssertPtrReturn(puContextID, VERR_INVALID_POINTER);
1232
1233	if ( uSessionID >= VBOX_GUESTCTRL_MAX_SESSIONS
1234	\|\| uObjectID >= VBOX_GUESTCTRL_MAX_OBJECTS)
1235	return VERR_INVALID_PARAMETER;
1236
1237	uint32_t uCount = ASMAtomicIncU32(&mNextContextID);
1238	uCount %= VBOX_GUESTCTRL_MAX_CONTEXTS;
1239
1240	uint32_t uNewContextID = VBOX_GUESTCTRL_CONTEXTID_MAKE(uSessionID, uObjectID, uCount);
1241
1242	*puContextID = uNewContextID;
1243
1244	#if 0
1245	LogFlowThisFunc(("mNextContextID=%RU32, uSessionID=%RU32, uObjectID=%RU32, uCount=%RU32, uNewContextID=%RU32\n",
1246	mNextContextID, uSessionID, uObjectID, uCount, uNewContextID));
1247	#endif
1248	return VINF_SUCCESS;
1249	}
1250
1251	/**
1252	* Registers (creates) a new wait event based on a given session and object ID.
1253	*
1254	* From those IDs an unique context ID (CID) will be built, which only can be
1255	* around once at a time.
1256	*
1257	* @returns VBox status code.
1258	* @retval VERR_GSTCTL_MAX_CID_COUNT_REACHED if unable to generate a free context ID (CID, the count part (bits 15:0)).
1259	* @param uSessionID Session ID to register wait event for.
1260	* @param uObjectID Object ID to register wait event for.
1261	* @param ppEvent Pointer to registered (created) wait event on success.
1262	* Must be destroyed with unregisterWaitEvent().
1263	*/
1264	int GuestBase::registerWaitEvent(uint32_t uSessionID, uint32_t uObjectID, GuestWaitEvent **ppEvent)
1265	{
1266	GuestEventTypes eventTypesEmpty;
1267	return registerWaitEventEx(uSessionID, uObjectID, eventTypesEmpty, ppEvent);
1268	}
1269
1270	/**
1271	* Creates and registers a new wait event object that waits on a set of events
1272	* related to a given object within the session.
1273	*
1274	* From the session ID and object ID a one-time unique context ID (CID) is built
1275	* for this wait object. Normally the CID is then passed to the guest along
1276	* with a request, and the guest passed the CID back with the reply. The
1277	* handler for the reply then emits a signal on the event type associated with
1278	* the reply, which includes signalling the object returned by this method and
1279	* the waking up the thread waiting on it.
1280	*
1281	* @returns VBox status code.
1282	* @retval VERR_GSTCTL_MAX_CID_COUNT_REACHED if unable to generate a free context ID (CID, the count part (bits 15:0)).
1283	* @param uSessionID Session ID to register wait event for.
1284	* @param uObjectID Object ID to register wait event for.
1285	* @param lstEvents List of events to register the wait event for.
1286	* @param ppEvent Pointer to registered (created) wait event on success.
1287	* Must be destroyed with unregisterWaitEvent().
1288	*/
1289	int GuestBase::registerWaitEventEx(uint32_t uSessionID, uint32_t uObjectID, const GuestEventTypes &lstEvents,
1290	GuestWaitEvent **ppEvent)
1291	{
1292	AssertPtrReturn(ppEvent, VERR_INVALID_POINTER);
1293
1294	uint32_t idContext;
1295	int vrc = generateContextID(uSessionID, uObjectID, &idContext);
1296	AssertRCReturn(vrc, vrc);
1297
1298	GuestWaitEvent *pEvent = new GuestWaitEvent();
1299	AssertPtrReturn(pEvent, VERR_NO_MEMORY);
1300
1301	vrc = pEvent->Init(idContext, lstEvents);
1302	AssertRCReturn(vrc, vrc);
1303
1304	LogFlowThisFunc(("New event=%p, CID=%RU32\n", pEvent, idContext));
1305
1306	vrc = RTCritSectEnter(&mWaitEventCritSect);
1307	if (RT_SUCCESS(vrc))
1308	{
1309	/*
1310	* Check that we don't have any context ID collisions (should be very unlikely).
1311	*
1312	* The ASSUMPTION here is that mWaitEvents has all the same events as
1313	* mWaitEventGroups, so it suffices to check one of the two.
1314	*/
1315	if (mWaitEvents.find(idContext) != mWaitEvents.end())
1316	{
1317	uint32_t cTries = 0;
1318	do
1319	{
1320	vrc = generateContextID(uSessionID, uObjectID, &idContext);
1321	AssertRCBreak(vrc);
1322	LogFunc(("Found context ID duplicate; trying a different context ID: %#x\n", idContext));
1323	if (mWaitEvents.find(idContext) != mWaitEvents.end())
1324	vrc = VERR_GSTCTL_MAX_CID_COUNT_REACHED;
1325	} while (RT_FAILURE_NP(vrc) && cTries++ < 10);
1326	}
1327	if (RT_SUCCESS(vrc))
1328	{
1329	/*
1330	* Insert event into matching event group. This is for faster per-group lookup of all events later.
1331	*/
1332	uint32_t cInserts = 0;
1333	for (GuestEventTypes::const_iterator ItType = lstEvents.begin(); ItType != lstEvents.end(); ++ItType)
1334	{
1335	GuestWaitEvents &eventGroup = mWaitEventGroups[*ItType];
1336	if (eventGroup.find(idContext) == eventGroup.end())
1337	{
1338	try
1339	{
1340	eventGroup.insert(std::pair<uint32_t, GuestWaitEvent *>(idContext, pEvent));
1341	cInserts++;
1342	}
1343	catch (std::bad_alloc &)
1344	{
1345	while (ItType != lstEvents.begin())
1346	{
1347	--ItType;
1348	mWaitEventGroups[*ItType].erase(idContext);
1349	}
1350	vrc = VERR_NO_MEMORY;
1351	break;
1352	}
1353	}
1354	else
1355	Assert(cInserts > 0); /* else: lstEvents has duplicate entries. */
1356	}
1357	if (RT_SUCCESS(vrc))
1358	{
1359	Assert(cInserts > 0 \|\| lstEvents.size() == 0);
1360	RT_NOREF(cInserts);
1361
1362	/*
1363	* Register event in the regular event list.
1364	*/
1365	try
1366	{
1367	mWaitEvents[idContext] = pEvent;
1368	}
1369	catch (std::bad_alloc &)
1370	{
1371	for (GuestEventTypes::const_iterator ItType = lstEvents.begin(); ItType != lstEvents.end(); ++ItType)
1372	mWaitEventGroups[*ItType].erase(idContext);
1373	vrc = VERR_NO_MEMORY;
1374	}
1375	}
1376	}
1377
1378	RTCritSectLeave(&mWaitEventCritSect);
1379	}
1380	if (RT_SUCCESS(vrc))
1381	{
1382	*ppEvent = pEvent;
1383	return vrc;
1384	}
1385
1386	if (pEvent)
1387	delete pEvent;
1388
1389	return vrc;
1390	}
1391
1392	/**
1393	* Signals all wait events of a specific type (if found)
1394	* and notifies external events accordingly.
1395	*
1396	* @returns VBox status code.
1397	* @param aType Event type to signal.
1398	* @param aEvent Which external event to notify.
1399	*/
1400	int GuestBase::signalWaitEvent(VBoxEventType_T aType, IEvent *aEvent)
1401	{
1402	int vrc = RTCritSectEnter(&mWaitEventCritSect);
1403	#ifdef DEBUG
1404	uint32_t cEvents = 0;
1405	#endif
1406	if (RT_SUCCESS(vrc))
1407	{
1408	GuestEventGroup::iterator itGroup = mWaitEventGroups.find(aType);
1409	if (itGroup != mWaitEventGroups.end())
1410	{
1411	/* Signal all events in the group, leaving the group empty afterwards. */
1412	GuestWaitEvents::iterator ItWaitEvt;
1413	while ((ItWaitEvt = itGroup->second.begin()) != itGroup->second.end())
1414	{
1415	LogFlowThisFunc(("Signalling event=%p, type=%ld (CID %#x: Session=%RU32, Object=%RU32, Count=%RU32) ...\n",
1416	ItWaitEvt->second, aType, ItWaitEvt->first, VBOX_GUESTCTRL_CONTEXTID_GET_SESSION(ItWaitEvt->first),
1417	VBOX_GUESTCTRL_CONTEXTID_GET_OBJECT(ItWaitEvt->first), VBOX_GUESTCTRL_CONTEXTID_GET_COUNT(ItWaitEvt->first)));
1418
1419	int vrc2 = ItWaitEvt->second->SignalExternal(aEvent);
1420	AssertRC(vrc2);
1421
1422	/* Take down the wait event object details before we erase it from this list and invalid ItGrpEvt. */
1423	const GuestEventTypes &EvtTypes = ItWaitEvt->second->Types();
1424	uint32_t idContext = ItWaitEvt->first;
1425	itGroup->second.erase(ItWaitEvt);
1426
1427	for (GuestEventTypes::const_iterator ItType = EvtTypes.begin(); ItType != EvtTypes.end(); ++ItType)
1428	{
1429	GuestEventGroup::iterator EvtTypeGrp = mWaitEventGroups.find(*ItType);
1430	if (EvtTypeGrp != mWaitEventGroups.end())
1431	{
1432	ItWaitEvt = EvtTypeGrp->second.find(idContext);
1433	if (ItWaitEvt != EvtTypeGrp->second.end())
1434	{
1435	LogFlowThisFunc(("Removing event %p (CID %#x) from type %d group\n", ItWaitEvt->second, idContext, *ItType));
1436	EvtTypeGrp->second.erase(ItWaitEvt);
1437	LogFlowThisFunc(("%zu events left for type %d\n", EvtTypeGrp->second.size(), *ItType));
1438	Assert(EvtTypeGrp->second.find(idContext) == EvtTypeGrp->second.end()); /* no duplicates */
1439	}
1440	}
1441	}
1442	}
1443	}
1444
1445	int vrc2 = RTCritSectLeave(&mWaitEventCritSect);
1446	if (RT_SUCCESS(vrc))
1447	vrc = vrc2;
1448	}
1449
1450	#ifdef DEBUG
1451	LogFlowThisFunc(("Signalled %RU32 events, vrc=%Rrc\n", cEvents, vrc));
1452	#endif
1453	return vrc;
1454	}
1455
1456	/**
1457	* Signals a wait event which is registered to a specific callback (bound to a context ID (CID)).
1458	*
1459	* @returns VBox status code.
1460	* @param pCbCtx Pointer to host service callback context.
1461	* @param vrcGuest Guest return VBox status code to set.
1462	* @param pPayload Additional wait event payload data set set on return. Optional.
1463	*/
1464	int GuestBase::signalWaitEventInternal(PVBOXGUESTCTRLHOSTCBCTX pCbCtx, int vrcGuest, const GuestWaitEventPayload *pPayload)
1465	{
1466	if (RT_SUCCESS(vrcGuest))
1467	return signalWaitEventInternalEx(pCbCtx, VINF_SUCCESS, VINF_SUCCESS /* vrcGuest */, pPayload);
1468
1469	return signalWaitEventInternalEx(pCbCtx, VERR_GSTCTL_GUEST_ERROR, vrcGuest, pPayload);
1470	}
1471
1472	/**
1473	* Signals a wait event which is registered to a specific callback (bound to a context ID (CID)).
1474	* Extended version.
1475	*
1476	* @returns VBox status code.
1477	* @param pCbCtx Pointer to host service callback context.
1478	* @param vrc Return VBox status code to set as wait result.
1479	* @param vrcGuest Guest return VBox status code to set additionally, if
1480	* vrc is set to VERR_GSTCTL_GUEST_ERROR.
1481	* @param pPayload Additional wait event payload data set set on return. Optional.
1482	*/
1483	int GuestBase::signalWaitEventInternalEx(PVBOXGUESTCTRLHOSTCBCTX pCbCtx, int vrc, int vrcGuest,
1484	const GuestWaitEventPayload *pPayload)
1485	{
1486	AssertPtrReturn(pCbCtx, VERR_INVALID_POINTER);
1487	/* pPayload is optional. */
1488
1489	int vrc2 = RTCritSectEnter(&mWaitEventCritSect);
1490	if (RT_SUCCESS(vrc2))
1491	{
1492	GuestWaitEvents::iterator itEvent = mWaitEvents.find(pCbCtx->uContextID);
1493	if (itEvent != mWaitEvents.end())
1494	{
1495	LogFlowThisFunc(("Signalling event=%p (CID %RU32, vrc=%Rrc, vrcGuest=%Rrc, pPayload=%p) ...\n",
1496	itEvent->second, itEvent->first, vrc, vrcGuest, pPayload));
1497	GuestWaitEvent *pEvent = itEvent->second;
1498	AssertPtr(pEvent);
1499	vrc2 = pEvent->SignalInternal(vrc, vrcGuest, pPayload);
1500	}
1501	else
1502	vrc2 = VERR_NOT_FOUND;
1503
1504	int vrc3 = RTCritSectLeave(&mWaitEventCritSect);
1505	if (RT_SUCCESS(vrc2))
1506	vrc2 = vrc3;
1507	}
1508
1509	return vrc2;
1510	}
1511
1512	/**
1513	* Unregisters (deletes) a wait event.
1514	*
1515	* After successful unregistration the event will not be valid anymore.
1516	*
1517	* @returns VBox status code.
1518	* @param pWaitEvt Wait event to unregister (delete).
1519	*/
1520	int GuestBase::unregisterWaitEvent(GuestWaitEvent *pWaitEvt)
1521	{
1522	if (!pWaitEvt) /* Nothing to unregister. */
1523	return VINF_SUCCESS;
1524
1525	int vrc = RTCritSectEnter(&mWaitEventCritSect);
1526	if (RT_SUCCESS(vrc))
1527	{
1528	LogFlowThisFunc(("pWaitEvt=%p\n", pWaitEvt));
1529
1530	/** @todo r=bird: One way of optimizing this would be to use the pointer
1531	* instead of the context ID as index into the groups, i.e. revert the value
1532	* pair for the GuestWaitEvents type.
1533	*
1534	* An even more efficent way, would be to not use sexy std::xxx containers for
1535	* the types, but iprt/list.h, as that would just be a RTListNodeRemove call for
1536	* each type w/o needing to iterate much at all. I.e. add a struct {
1537	* RTLISTNODE, GuestWaitEvent *pSelf} array to GuestWaitEvent, and change
1538	* GuestEventGroup to std::map<VBoxEventType_T, RTListAnchorClass>
1539	* (RTListAnchorClass == RTLISTANCHOR wrapper with a constructor)).
1540	*
1541	* P.S. the try/catch is now longer needed after I changed pWaitEvt->Types() to
1542	* return a const reference rather than a copy of the type list (and it think it
1543	* is safe to assume iterators are not hitting the heap). Copy vs reference is
1544	* an easy mistake to make in C++.
1545	*
1546	* P.P.S. The mWaitEventGroups optimization is probably just a lot of extra work
1547	* with little payoff.
1548	*/
1549	try
1550	{
1551	/* Remove the event from all event type groups. */
1552	const GuestEventTypes &lstTypes = pWaitEvt->Types();
1553	for (GuestEventTypes::const_iterator itType = lstTypes.begin();
1554	itType != lstTypes.end(); ++itType)
1555	{
1556	/** @todo Slow O(n) lookup. Optimize this. */
1557	GuestWaitEvents::iterator itCurEvent = mWaitEventGroups[(*itType)].begin();
1558	while (itCurEvent != mWaitEventGroups[(*itType)].end())
1559	{
1560	if (itCurEvent->second == pWaitEvt)
1561	{
1562	mWaitEventGroups[(*itType)].erase(itCurEvent);
1563	break;
1564	}
1565	++itCurEvent;
1566	}
1567	}
1568
1569	/* Remove the event from the general event list as well. */
1570	GuestWaitEvents::iterator itEvent = mWaitEvents.find(pWaitEvt->ContextID());
1571
1572	Assert(itEvent != mWaitEvents.end());
1573	Assert(itEvent->second == pWaitEvt);
1574
1575	mWaitEvents.erase(itEvent);
1576
1577	delete pWaitEvt;
1578	pWaitEvt = NULL;
1579	}
1580	catch (const std::exception &ex)
1581	{
1582	RT_NOREF(ex);
1583	AssertFailedStmt(vrc = VERR_NOT_FOUND);
1584	}
1585
1586	int vrc2 = RTCritSectLeave(&mWaitEventCritSect);
1587	if (RT_SUCCESS(vrc))
1588	vrc = vrc2;
1589	}
1590
1591	return vrc;
1592	}
1593
1594	/**
1595	* Waits for an already registered guest wait event.
1596	*
1597	* @return VBox status code.
1598	* @retval VERR_GSTCTL_GUEST_ERROR may be returned, call GuestResult() to get
1599	* the actual result.
1600	*
1601	* @param pWaitEvt Pointer to event to wait for.
1602	* @param msTimeout Timeout (in ms) for waiting.
1603	* @param pType Event type of following IEvent. Optional.
1604	* @param ppEvent Pointer to IEvent which got triggered for this event. Optional.
1605	*/
1606	int GuestBase::waitForEvent(GuestWaitEvent pWaitEvt, uint32_t msTimeout, VBoxEventType_T pType, IEvent **ppEvent)
1607	{
1608	AssertPtrReturn(pWaitEvt, VERR_INVALID_POINTER);
1609	/* pType is optional. */
1610	/* ppEvent is optional. */
1611
1612	int vrc = pWaitEvt->Wait(msTimeout);
1613	if (RT_SUCCESS(vrc))
1614	{
1615	const ComPtr<IEvent> pThisEvent = pWaitEvt->Event();
1616	if (pThisEvent.isNotNull()) /* Make sure that we actually have an event associated. */
1617	{
1618	if (pType)
1619	{
1620	HRESULT hrc = pThisEvent->COMGETTER(Type)(pType);
1621	if (FAILED(hrc))
1622	vrc = VERR_COM_UNEXPECTED;
1623	}
1624	if ( RT_SUCCESS(vrc)
1625	&& ppEvent)
1626	pThisEvent.queryInterfaceTo(ppEvent);
1627
1628	unconst(pThisEvent).setNull();
1629	}
1630	}
1631
1632	return vrc;
1633	}
1634
1635	#ifndef VBOX_GUESTCTRL_TEST_CASE
1636	/**
1637	* Convenience function to return a pre-formatted string using an action description and a guest error information.
1638	*
1639	* @returns Pre-formatted string with a user-friendly error string.
1640	* @param strAction Action of when the error occurred.
1641	* @param guestErrorInfo Related guest error information to use.
1642	*/
1643	/* static */ Utf8Str GuestBase::getErrorAsString(const Utf8Str& strAction, const GuestErrorInfo& guestErrorInfo)
1644	{
1645	Assert(strAction.isNotEmpty());
1646	return Utf8StrFmt("%s: %s", strAction.c_str(), getErrorAsString(guestErrorInfo).c_str());
1647	}
1648
1649	/**
1650	* Returns a user-friendly error message from a given GuestErrorInfo object.
1651	*
1652	* @returns Error message string.
1653	* @param guestErrorInfo Guest error info to return error message for.
1654	*/
1655	/* static */ Utf8Str GuestBase::getErrorAsString(const GuestErrorInfo& guestErrorInfo)
1656	{
1657	AssertMsg(RT_FAILURE(guestErrorInfo.getVrc()), ("Guest vrc does not indicate a failure\n"));
1658
1659	Utf8Str strErr;
1660
1661	#ifdef VBOX_WITH_GSTCTL_TOOLBOX_SUPPORT
1662	# define CASE_TOOL_ERROR(a_eType, a_strTool) \
1663	case a_eType: \
1664	{ \
1665	strErr = GuestProcessToolbox::guestErrorToString(a_strTool, guestErrorInfo); \
1666	break; \
1667	}
1668	#endif /* VBOX_WITH_GSTCTL_TOOLBOX_SUPPORT */
1669
1670	switch (guestErrorInfo.getType())
1671	{
1672	case GuestErrorInfo::Type_Session:
1673	strErr = GuestSession::i_guestErrorToString(guestErrorInfo.getVrc());
1674	break;
1675
1676	case GuestErrorInfo::Type_Process:
1677	strErr = GuestProcess::i_guestErrorToString(guestErrorInfo.getVrc(), guestErrorInfo.getWhat().c_str());
1678	break;
1679
1680	case GuestErrorInfo::Type_File:
1681	strErr = GuestFile::i_guestErrorToString(guestErrorInfo.getVrc(), guestErrorInfo.getWhat().c_str());
1682	break;
1683
1684	case GuestErrorInfo::Type_Directory:
1685	strErr = GuestDirectory::i_guestErrorToString(guestErrorInfo.getVrc(), guestErrorInfo.getWhat().c_str());
1686	break;
1687
1688	case GuestErrorInfo::Type_Fs:
1689	strErr = GuestFs::guestErrorToString(guestErrorInfo);
1690	break;
1691
1692	#ifdef VBOX_WITH_GSTCTL_TOOLBOX_SUPPORT
1693	CASE_TOOL_ERROR(GuestErrorInfo::Type_ToolLs, VBOXSERVICE_TOOL_LS);
1694	CASE_TOOL_ERROR(GuestErrorInfo::Type_ToolMkDir, VBOXSERVICE_TOOL_MKDIR);
1695	CASE_TOOL_ERROR(GuestErrorInfo::Type_ToolMkTemp, VBOXSERVICE_TOOL_MKTEMP);
1696	CASE_TOOL_ERROR(GuestErrorInfo::Type_ToolRm, VBOXSERVICE_TOOL_RM);
1697	CASE_TOOL_ERROR(GuestErrorInfo::Type_ToolStat, VBOXSERVICE_TOOL_STAT);
1698	#endif /* VBOX_WITH_GSTCTL_TOOLBOX_SUPPORT */
1699	default:
1700	AssertMsgFailed(("Type not implemented (type=%RU32, vrc=%Rrc)\n", guestErrorInfo.getType(), guestErrorInfo.getVrc()));
1701	strErr = Utf8StrFmt("Unknown / Not implemented -- Please file a bug report (type=%RU32, vrc=%Rrc)\n",
1702	guestErrorInfo.getType(), guestErrorInfo.getVrc());
1703	break;
1704	}
1705
1706	return strErr;
1707	}
1708
1709	#endif /* VBOX_GUESTCTRL_TEST_CASE */
1710
1711	/**
1712	* Converts RTFMODE to FsObjType_T.
1713	*
1714	* @return Converted FsObjType_T type.
1715	* @param fMode RTFMODE to convert.
1716	*/
1717	/* static */
1718	FsObjType_T GuestBase::fileModeToFsObjType(RTFMODE fMode)
1719	{
1720	if (RTFS_IS_FIFO(fMode)) return FsObjType_Fifo;
1721	else if (RTFS_IS_DEV_CHAR(fMode)) return FsObjType_DevChar;
1722	else if (RTFS_IS_DIRECTORY(fMode)) return FsObjType_Directory;
1723	else if (RTFS_IS_DEV_BLOCK(fMode)) return FsObjType_DevBlock;
1724	else if (RTFS_IS_FILE(fMode)) return FsObjType_File;
1725	else if (RTFS_IS_SYMLINK(fMode)) return FsObjType_Symlink;
1726	else if (RTFS_IS_SOCKET(fMode)) return FsObjType_Socket;
1727	else if (RTFS_IS_WHITEOUT(fMode)) return FsObjType_WhiteOut;
1728
1729	return FsObjType_Unknown;
1730	}
1731
1732	/**
1733	* Converts a FsObjType_T to a human-readable string.
1734	*
1735	* @returns Human-readable string of FsObjType_T.
1736	* @param enmType FsObjType_T to convert.
1737	*/
1738	/* static */
1739	const char *GuestBase::fsObjTypeToStr(FsObjType_T enmType)
1740	{
1741	switch (enmType)
1742	{
1743	case FsObjType_Directory: return "directory";
1744	case FsObjType_Symlink: return "symbolic link";
1745	case FsObjType_File: return "file";
1746	default: break;
1747	}
1748
1749	return "unknown";
1750	}
1751
1752	/**
1753	* Converts a PathStyle_T to a human-readable string.
1754	*
1755	* @returns Human-readable string of PathStyle_T.
1756	* @param enmPathStyle PathStyle_T to convert.
1757	*/
1758	/* static */
1759	const char *GuestBase::pathStyleToStr(PathStyle_T enmPathStyle)
1760	{
1761	switch (enmPathStyle)
1762	{
1763	case PathStyle_DOS: return "DOS";
1764	case PathStyle_UNIX: return "UNIX";
1765	case PathStyle_Unknown: return "Unknown";
1766	default: break;
1767	}
1768
1769	return "<invalid>";
1770	}
1771
1772	GuestObject::GuestObject(void)
1773	: mSession(NULL),
1774	mObjectID(0)
1775	{
1776	}
1777
1778	GuestObject::~GuestObject(void)
1779	{
1780	}
1781
1782	/**
1783	* Binds this guest (control) object to a specific guest (control) session.
1784	*
1785	* @returns VBox status code.
1786	* @param pConsole Pointer to console object to use.
1787	* @param pSession Pointer to session to bind this object to.
1788	* @param uObjectID Object ID for this object to use within that specific session.
1789	* Each object ID must be unique per session.
1790	*/
1791	int GuestObject::bindToSession(Console pConsole, GuestSession pSession, uint32_t uObjectID)
1792	{
1793	AssertPtrReturn(pConsole, VERR_INVALID_POINTER);
1794	AssertPtrReturn(pSession, VERR_INVALID_POINTER);
1795
1796	mConsole = pConsole;
1797	mSession = pSession;
1798	mObjectID = uObjectID;
1799
1800	return VINF_SUCCESS;
1801	}
1802
1803	/**
1804	* Registers (creates) a new wait event.
1805	*
1806	* @returns VBox status code.
1807	* @param lstEvents List of events which the new wait event gets triggered at.
1808	* @param ppEvent Returns the new wait event on success.
1809	*/
1810	int GuestObject::registerWaitEvent(const GuestEventTypes &lstEvents,
1811	GuestWaitEvent **ppEvent)
1812	{
1813	AssertPtr(mSession);
1814	return GuestBase::registerWaitEventEx(mSession->i_getId(), mObjectID, lstEvents, ppEvent);
1815	}
1816
1817	/**
1818	* Sends a HGCM message to the guest (via the guest control host service).
1819	*
1820	* @returns VBox status code.
1821	* @param uMessage Message ID of message to send.
1822	* @param cParms Number of HGCM message parameters to send.
1823	* @param paParms Array of HGCM message parameters to send.
1824	*/
1825	int GuestObject::sendMessage(uint32_t uMessage, uint32_t cParms, PVBOXHGCMSVCPARM paParms)
1826	{
1827	#ifndef VBOX_GUESTCTRL_TEST_CASE
1828	ComObjPtr<Console> pConsole = mConsole;
1829	Assert(!pConsole.isNull());
1830
1831	int vrc = VERR_HGCM_SERVICE_NOT_FOUND;
1832
1833	/* Forward the information to the VMM device. */
1834	VMMDev *pVMMDev = pConsole->i_getVMMDev();
1835	if (pVMMDev)
1836	{
1837	/* HACK ALERT! We extend the first parameter to 64-bit and use the
1838	two topmost bits for call destination information. */
1839	Assert(paParms[0].type == VBOX_HGCM_SVC_PARM_32BIT);
1840	paParms[0].type = VBOX_HGCM_SVC_PARM_64BIT;
1841	paParms[0].u.uint64 = (uint64_t)paParms[0].u.uint32 \| VBOX_GUESTCTRL_DST_SESSION;
1842
1843	/* Make the call. */
1844	LogFlowThisFunc(("uMessage=%RU32, cParms=%RU32\n", uMessage, cParms));
1845	vrc = pVMMDev->hgcmHostCall(HGCMSERVICE_NAME, uMessage, cParms, paParms);
1846	if (RT_FAILURE(vrc))
1847	{
1848	/** @todo What to do here? */
1849	}
1850	}
1851	#else
1852	LogFlowThisFuncEnter();
1853
1854	/* Not needed within testcases. */
1855	RT_NOREF(uMessage, cParms, paParms);
1856	int vrc = VINF_SUCCESS;
1857	#endif
1858	return vrc;
1859	}
1860
1861	GuestWaitEventBase::GuestWaitEventBase(void)
1862	: mfAborted(false),
1863	mCID(0),
1864	mEventSem(NIL_RTSEMEVENT),
1865	mVrc(VINF_SUCCESS),
1866	mGuestRc(VINF_SUCCESS)
1867	{
1868	}
1869
1870	GuestWaitEventBase::~GuestWaitEventBase(void)
1871	{
1872	if (mEventSem != NIL_RTSEMEVENT)
1873	{
1874	RTSemEventDestroy(mEventSem);
1875	mEventSem = NIL_RTSEMEVENT;
1876	}
1877	}
1878
1879	/**
1880	* Initializes a wait event with a specific context ID (CID).
1881	*
1882	* @returns VBox status code.
1883	* @param uCID Context ID (CID) to initialize wait event with.
1884	*/
1885	int GuestWaitEventBase::Init(uint32_t uCID)
1886	{
1887	mCID = uCID;
1888
1889	return RTSemEventCreate(&mEventSem);
1890	}
1891
1892	/**
1893	* Signals a wait event.
1894	*
1895	* @returns VBox status code.
1896	* @param vrc Return VBox status code to set as wait result.
1897	* @param vrcGuest Guest return VBox status code to set additionally, if
1898	* @a vrc is set to VERR_GSTCTL_GUEST_ERROR.
1899	* @param pPayload Additional wait event payload data set set on return. Optional.
1900	*/
1901	int GuestWaitEventBase::SignalInternal(int vrc, int vrcGuest, const GuestWaitEventPayload *pPayload)
1902	{
1903	if (mfAborted)
1904	return VERR_CANCELLED;
1905
1906	#ifdef VBOX_STRICT
1907	if (vrc == VERR_GSTCTL_GUEST_ERROR)
1908	AssertMsg(RT_FAILURE(vrcGuest), ("Guest error indicated but no actual guest error set (%Rrc)\n", vrcGuest));
1909	else
1910	AssertMsg(RT_SUCCESS(vrcGuest), ("No guest error indicated but actual guest error set (%Rrc)\n", vrcGuest));
1911	#endif
1912
1913	int vrc2;
1914	if (pPayload)
1915	vrc2 = mPayload.CopyFromDeep(*pPayload);
1916	else
1917	vrc2 = VINF_SUCCESS;
1918	if (RT_SUCCESS(vrc2))
1919	{
1920	mVrc = vrc;
1921	mGuestRc = vrcGuest;
1922
1923	vrc2 = RTSemEventSignal(mEventSem);
1924	}
1925
1926	return vrc2;
1927	}
1928
1929	/**
1930	* Waits for the event to get triggered. Will return success if the
1931	* wait was successufl (e.g. was being triggered), otherwise an error will be returned.
1932	*
1933	* @returns VBox status code.
1934	* @retval VERR_GSTCTL_GUEST_ERROR may be returned, call GuestResult() to get
1935	* the actual result from the guest side.
1936	*
1937	* @param msTimeout Timeout (in ms) to wait.
1938	* Specifiy 0 to wait indefinitely.
1939	*/
1940	int GuestWaitEventBase::Wait(RTMSINTERVAL msTimeout)
1941	{
1942	int vrc;
1943	if (!mfAborted)
1944	{
1945	AssertReturn(mEventSem != NIL_RTSEMEVENT, VERR_CANCELLED);
1946
1947	vrc = RTSemEventWait(mEventSem, msTimeout ? msTimeout : RT_INDEFINITE_WAIT);
1948	if ( RT_SUCCESS(vrc)
1949	&& mfAborted)
1950	vrc = VERR_CANCELLED;
1951
1952	if (RT_SUCCESS(vrc))
1953	{
1954	/* If waiting succeeded, return the overall
1955	* result code. */
1956	vrc = mVrc;
1957	}
1958	}
1959	else
1960	vrc = VERR_CANCELLED;
1961	return vrc;
1962	}
1963
1964	GuestWaitEvent::GuestWaitEvent(void)
1965	{
1966	}
1967
1968	GuestWaitEvent::~GuestWaitEvent(void)
1969	{
1970
1971	}
1972
1973	/**
1974	* Cancels the event.
1975	*/
1976	int GuestWaitEvent::Cancel(void)
1977	{
1978	if (mfAborted) /* Already aborted? */
1979	return VINF_SUCCESS;
1980
1981	mfAborted = true;
1982
1983	#ifdef DEBUG_andy
1984	LogFlowThisFunc(("Cancelling %p ...\n"));
1985	#endif
1986	return RTSemEventSignal(mEventSem);
1987	}
1988
1989	/**
1990	* Initializes a wait event with a given context ID (CID).
1991	*
1992	* @returns VBox status code.
1993	* @param uCID Context ID to initialize wait event with.
1994	*/
1995	int GuestWaitEvent::Init(uint32_t uCID)
1996	{
1997	return GuestWaitEventBase::Init(uCID);
1998	}
1999
2000	/**
2001	* Initializes a wait event with a given context ID (CID) and a list of event types to wait for.
2002	*
2003	* @returns VBox status code.
2004	* @param uCID Context ID to initialize wait event with.
2005	* @param lstEvents List of event types to wait for this wait event to get signalled.
2006	*/
2007	int GuestWaitEvent::Init(uint32_t uCID, const GuestEventTypes &lstEvents)
2008	{
2009	int vrc = GuestWaitEventBase::Init(uCID);
2010	if (RT_SUCCESS(vrc))
2011	mEventTypes = lstEvents;
2012
2013	return vrc;
2014	}
2015
2016	/**
2017	* Signals the event.
2018	*
2019	* @return VBox status code.
2020	* @param pEvent Public IEvent to associate.
2021	* Optional.
2022	*/
2023	int GuestWaitEvent::SignalExternal(IEvent *pEvent)
2024	{
2025	if (pEvent)
2026	mEvent = pEvent;
2027
2028	return RTSemEventSignal(mEventSem);
2029	}
2030
2031
2032	//////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
2033	// GuestPath
2034	//////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
2035
2036	/**
2037	* Builds a (final) destination path from a given source + destination path.
2038	*
2039	* This does not utilize any file system access whatsoever. Used for guest and host paths.
2040	*
2041	* @returns VBox status code.
2042	* @param strSrcPath Source path to build destination path for.
2043	* @param enmSrcPathStyle Path style the source path is in.
2044	* @param strDstPath Destination path to use for building the (final) destination path.
2045	* @param enmDstPathStyle Path style the destination path is in.
2046	*
2047	* @note See rules within the function.
2048	*/
2049	/* static */
2050	int GuestPath::BuildDestinationPath(const Utf8Str &strSrcPath, PathStyle_T enmSrcPathStyle,
2051	Utf8Str &strDstPath, PathStyle_T enmDstPathStyle)
2052	{
2053	/*
2054	* Rules:
2055	*
2056	* # source dest final dest remarks
2057	*
2058	* 1 /src/path1/ /dst/path2/ /dst/path2/<contents of path1> Just copies contents of <contents of path1>, not the path1 itself.
2059	* 2 /src/path1 /dst/path2/ /dst/path2/path1 Copies path1 into path2.
2060	* 3 /src/path1 /dst/path2 /dst/path2 Overwrites stuff from path2 with stuff from path1.
2061	* 4 Dotdot ("..") directories are forbidden for security reasons.
2062	*/
2063	const char *pszSrcName = RTPathFilenameEx(strSrcPath.c_str(),
2064	enmSrcPathStyle == PathStyle_DOS
2065	? RTPATH_STR_F_STYLE_DOS : RTPATH_STR_F_STYLE_UNIX);
2066
2067	const char *pszDstName = RTPathFilenameEx(strDstPath.c_str(),
2068	enmDstPathStyle == PathStyle_DOS
2069	? RTPATH_STR_F_STYLE_DOS : RTPATH_STR_F_STYLE_UNIX);
2070
2071	if ( (!pszSrcName && !pszDstName) /* #1 */
2072	\|\| ( pszSrcName && pszDstName)) /* #3 */
2073	{
2074	/* Note: Must have DirectoryFlag_CopyIntoExisting + FileFlag_NoReplace not set. */
2075	}
2076	else if (pszSrcName && !pszDstName) /* #2 */
2077	{
2078	if (!strDstPath.endsWith(PATH_STYLE_SEP_STR(enmDstPathStyle)))
2079	strDstPath += PATH_STYLE_SEP_STR(enmDstPathStyle);
2080	strDstPath += pszSrcName;
2081	}
2082
2083	/* Translate the built destination path to a path compatible with the destination. */
2084	int vrc = GuestPath::Translate(strDstPath, enmSrcPathStyle, enmDstPathStyle);
2085	if (RT_SUCCESS(vrc))
2086	{
2087	union
2088	{
2089	RTPATHPARSED Parsed;
2090	RTPATHSPLIT Split;
2091	uint8_t ab[4096];
2092	} u;
2093	vrc = RTPathParse(strDstPath.c_str(), &u.Parsed, sizeof(u),
2094	enmDstPathStyle == PathStyle_DOS ? RTPATH_STR_F_STYLE_DOS : RTPATH_STR_F_STYLE_UNIX);
2095	if (RT_SUCCESS(vrc))
2096	{
2097	if (u.Parsed.fProps & RTPATH_PROP_DOTDOT_REFS) /* #4 */
2098	vrc = VERR_INVALID_PARAMETER;
2099	}
2100	}
2101
2102	LogRel2(("Guest Control: Building destination path for '%s' (%s) -> '%s' (%s): %Rrc\n",
2103	strSrcPath.c_str(), GuestBase::pathStyleToStr(enmSrcPathStyle),
2104	strDstPath.c_str(), GuestBase::pathStyleToStr(enmDstPathStyle), vrc));
2105
2106	return vrc;
2107	}
2108
2109	/**
2110	* Translates a path from a specific path style into another.
2111	*
2112	* @returns VBox status code.
2113	* @retval VERR_NOT_SUPPORTED if a conversion is not supported.
2114	* @retval VERR_NOT_IMPLEMENTED if path style conversion is not implemented yet.
2115	* @param strPath Path to translate. Will contain the translated path on success. UTF-8 only.
2116	* @param enmSrcPathStyle Source path style \a strPath is expected in.
2117	* @param enmDstPathStyle Destination path style to convert to.
2118	* @param fForce Whether to force the translation to the destination path style or not.
2119	*
2120	* @note This does NOT remove any trailing slashes and/or perform file system lookups!
2121	*/
2122	/* static */
2123	int GuestPath::Translate(Utf8Str &strPath, PathStyle_T enmSrcPathStyle, PathStyle_T enmDstPathStyle, bool fForce /* = false */)
2124	{
2125	if (strPath.isEmpty())
2126	return VINF_SUCCESS;
2127
2128	AssertReturn(RTStrIsValidEncoding(strPath.c_str()), VERR_INVALID_PARAMETER);
2129
2130	int vrc = VINF_SUCCESS;
2131
2132	Utf8Str strTranslated;
2133
2134	if ( ( enmSrcPathStyle == PathStyle_DOS
2135	&& enmDstPathStyle == PathStyle_UNIX)
2136	\|\| (fForce && enmDstPathStyle == PathStyle_UNIX))
2137	{
2138	strTranslated = strPath;
2139	RTPathChangeToUnixSlashes(strTranslated.mutableRaw(), true /* fForce */);
2140	}
2141	else if ( ( enmSrcPathStyle == PathStyle_UNIX
2142	&& enmDstPathStyle == PathStyle_DOS)
2143	\|\| (fForce && enmDstPathStyle == PathStyle_DOS))
2144
2145	{
2146	strTranslated = strPath;
2147	RTPathChangeToDosSlashes(strTranslated.mutableRaw(), true /* fForce */);
2148	}
2149
2150	if ( strTranslated.isEmpty() /* Not forced. */
2151	&& enmSrcPathStyle == enmDstPathStyle)
2152	{
2153	strTranslated = strPath;
2154	}
2155
2156	if (RT_FAILURE(vrc))
2157	{
2158	LogRel(("Guest Control: Translating path '%s' (%s) -> '%s' (%s) failed, vrc=%Rrc\n",
2159	strPath.c_str(), GuestBase::pathStyleToStr(enmSrcPathStyle),
2160	strTranslated.c_str(), GuestBase::pathStyleToStr(enmDstPathStyle), vrc));
2161	return vrc;
2162	}
2163
2164	/* Cleanup. */
2165	const char *psz = strTranslated.mutableRaw();
2166	size_t const cch = strTranslated.length();
2167	size_t off = 0;
2168	while (off < cch)
2169	{
2170	if (off + 1 > cch)
2171	break;
2172	/* Remove double back slashes (DOS only). */
2173	if ( enmDstPathStyle == PathStyle_DOS
2174	&& psz[off] == '\\'
2175	&& psz[off + 1] == '\\')
2176	{
2177	strTranslated.erase(off + 1, 1);
2178	off++;
2179	}
2180	/* Remove double forward slashes (UNIX only). */
2181	if ( enmDstPathStyle == PathStyle_UNIX
2182	&& psz[off] == '/'
2183	&& psz[off + 1] == '/')
2184	{
2185	strTranslated.erase(off + 1, 1);
2186	off++;
2187	}
2188	off++;
2189	}
2190
2191	/* Note: Do not trim() paths here, as technically it's possible to create paths with trailing spaces. */
2192
2193	strTranslated.jolt();
2194
2195	LogRel2(("Guest Control: Translating '%s' (%s) -> '%s' (%s): %Rrc\n",
2196	strPath.c_str(), GuestBase::pathStyleToStr(enmSrcPathStyle),
2197	strTranslated.c_str(), GuestBase::pathStyleToStr(enmDstPathStyle), vrc));
2198
2199	if (RT_SUCCESS(vrc))
2200	strPath = strTranslated;
2201
2202	return vrc;
2203	}
2204

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source: vbox/trunk/src/VBox/Main/src-client/GuestCtrlPrivate.cpp@ 107044

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