dndmanager.cpp@ 44102

Last change on this file since 44102 was 44102, checked in by vboxsync, 12 years ago
HostServices/Dnd: avoid floating point arithmetics here
Property svn:eol-style set to `native` Property svn:keywords set to `Author Date Id Revision`
File size: 27.7 KB

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1	/* $Id: dndmanager.cpp 44102 2012-12-12 09:36:49Z vboxsync $ */
2	/** @file
3	* Drag and Drop manager.
4	*/
5
6	/*
7	* Copyright (C) 2011-2012 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	/******************************************************************************
19	* Header Files *
20	******************************************************************************/
21
22	#define LOG_GROUP LOG_GROUP_HGCM
23
24	#include "dndmanager.h"
25
26	#include <VBox/log.h>
27	#include <iprt/file.h>
28	#include <iprt/dir.h>
29	#include <iprt/path.h>
30	#include <iprt/uri.h>
31
32	#define VERBOSE 1
33
34	#if defined(VERBOSE) && defined(DEBUG_poetzsch)
35	# include <iprt/stream.h>
36	# define DO(s) RTPrintf s
37	#else
38	# define DO(s) do {} while(0)
39	//# define DO(s) Log s
40	#endif
41
42	/******************************************************************************
43	* Private declarations *
44	******************************************************************************/
45
46	typedef DECLCALLBACK(int) FNDNDPRIVATEPROGRESS(size_t cbDone, void *pvUser);
47	typedef FNDNDPRIVATEPROGRESS *PFNDNDPRIVATEPROGRESS;
48
49	/**
50	* Internal DnD message class for informing the guest about a new directory.
51	*
52	* @see DnDHGSendDataMessage
53	*/
54	class DnDHGSendDirPrivate: public DnDMessage
55	{
56	public:
57	DnDHGSendDirPrivate(const RTCString &strPath, uint32_t fMode, uint64_t cbSize, PFNDNDPRIVATEPROGRESS pfnProgressCallback, void *pvProgressUser)
58	: m_strPath(strPath)
59	, m_cbSize(cbSize)
60	, m_pfnProgressCallback(pfnProgressCallback)
61	, m_pvProgressUser(pvProgressUser)
62	{
63	VBOXHGCMSVCPARM paTmpParms[3];
64	paTmpParms[0].setString(m_strPath.c_str());
65	paTmpParms[1].setUInt32(m_strPath.length() + 1);
66	paTmpParms[2].setUInt32(fMode);
67	m_pNextMsg = new HGCM::Message(DragAndDropSvc::HOST_DND_HG_SND_DIR, 3, paTmpParms);
68	}
69
70	int currentMessage(uint32_t uMsg, uint32_t cParms, VBOXHGCMSVCPARM paParms[])
71	{
72	int rc = DnDMessage::currentMessage(uMsg, cParms, paParms);
73	/* Advance progress info */
74	if ( RT_SUCCESS(rc)
75	&& m_pfnProgressCallback)
76	rc = m_pfnProgressCallback(m_cbSize, m_pvProgressUser);
77
78	return rc;
79	}
80
81	protected:
82	RTCString m_strPath;
83
84	/* Progress stuff */
85	size_t m_cbSize;
86	PFNDNDPRIVATEPROGRESS m_pfnProgressCallback;
87	void *m_pvProgressUser;
88	};
89
90	/**
91	* Internal DnD message class for informing the guest about a new file.
92	*
93	* @see DnDHGSendDataMessage
94	*/
95	class DnDHGSendFilePrivate: public DnDMessage
96	{
97	public:
98	DnDHGSendFilePrivate(const RTCString &strHostPath, const RTCString &strGuestPath, uint32_t fMode, uint64_t cbSize, PFNDNDPRIVATEPROGRESS pfnProgressCallback, void *pvProgressUser);
99	~DnDHGSendFilePrivate();
100
101	int currentMessage(uint32_t uMsg, uint32_t cParms, VBOXHGCMSVCPARM paParms[]);
102
103	protected:
104	RTCString m_strHostPath;
105	RTCString m_strGuestPath;
106	uint64_t m_cbSize;
107	uint64_t m_cbDone;
108	RTFILE m_hCurFile;
109	VBOXHGCMSVCPARM m_paSkelParms[5];
110
111	/* Progress stuff */
112	PFNDNDPRIVATEPROGRESS m_pfnProgressCallback;
113	void *m_pvProgressUser;
114	};
115
116	/**
117	* Internal DnD message class for informing the guest about new drag & drop
118	* data.
119	*
120	* @see DnDHGSendDataMessage
121	*/
122	class DnDHGSendDataMessagePrivate: public DnDMessage
123	{
124	public:
125	DnDHGSendDataMessagePrivate(uint32_t uMsg, uint32_t cParms, VBOXHGCMSVCPARM paParms[], PFNDNDPRIVATEPROGRESS pfnProgressCallback, void *pvProgressUser);
126	int currentMessage(uint32_t uMsg, uint32_t cParms, VBOXHGCMSVCPARM paParms[]);
127
128	protected:
129	size_t m_cbSize;
130	size_t m_cbDone;
131
132	/* Progress stuff */
133	PFNDNDPRIVATEPROGRESS m_pfnProgressCallback;
134	void *m_pvProgressUser;
135	};
136
137	/******************************************************************************
138	* Implementation *
139	******************************************************************************/
140
141	/******************************************************************************
142	* DnDHGSendFilePrivate *
143	******************************************************************************/
144
145	DnDHGSendFilePrivate::DnDHGSendFilePrivate(const RTCString &strHostPath, const RTCString &strGuestPath, uint32_t fMode, uint64_t cbSize, PFNDNDPRIVATEPROGRESS pfnProgressCallback, void *pvProgressUser)
146	: m_strHostPath(strHostPath)
147	, m_strGuestPath(strGuestPath)
148	, m_cbSize(cbSize)
149	, m_cbDone(0)
150	, m_hCurFile(0)
151	, m_pfnProgressCallback(pfnProgressCallback)
152	, m_pvProgressUser(pvProgressUser)
153	{
154	m_paSkelParms[0].setString(m_strGuestPath.c_str());
155	m_paSkelParms[1].setUInt32(m_strGuestPath.length() + 1);
156	m_paSkelParms[2].setPointer(NULL, 0);
157	m_paSkelParms[3].setUInt32(0);
158	m_paSkelParms[4].setUInt32(fMode);
159	m_pNextMsg = new HGCM::Message(DragAndDropSvc::HOST_DND_HG_SND_FILE, 5, m_paSkelParms);
160	}
161
162	DnDHGSendFilePrivate::~DnDHGSendFilePrivate()
163	{
164	if (m_hCurFile)
165	RTFileClose(m_hCurFile);
166	}
167
168	int DnDHGSendFilePrivate::currentMessage(uint32_t uMsg, uint32_t cParms, VBOXHGCMSVCPARM paParms[])
169	{
170	if (!m_pNextMsg)
171	return VERR_NO_DATA;
172
173	int rc = m_pNextMsg->getData(uMsg, cParms, paParms);
174	clearNextMsg();
175	if (RT_FAILURE(rc))
176	return rc;
177
178	if (!m_hCurFile)
179	{
180	rc = RTFileOpen(&m_hCurFile, m_strHostPath.c_str(), RTFILE_O_OPEN \| RTFILE_O_READ \| RTFILE_O_DENY_ALL);
181	if (RT_FAILURE(rc))
182	return rc;
183	}
184
185	/* How big is the pointer provided by the guest? */
186	uint32_t cbToRead = paParms[2].u.pointer.size;
187	size_t cbRead;
188	rc = RTFileRead(m_hCurFile, paParms[2].u.pointer.addr, cbToRead, &cbRead);
189	if (RT_FAILURE(rc))
190	{
191	/* On error, immediately close the file. */
192	RTFileClose(m_hCurFile);
193	m_hCurFile = 0;
194	return rc;
195	}
196	m_cbDone += cbRead;
197	/* Tell the guest the actual size. */
198	paParms[3].setUInt32(cbRead);
199	/* Check if we are done. */
200	if (m_cbSize == m_cbDone)
201	{
202	RTFileClose(m_hCurFile);
203	m_hCurFile = 0;
204	}
205	else
206	{
207	/* More data! Prepare the next message. */
208	m_pNextMsg = new HGCM::Message(DragAndDropSvc::HOST_DND_HG_SND_FILE, 5, m_paSkelParms);
209	}
210
211	/* Advance progress info */
212	if ( RT_SUCCESS(rc)
213	&& m_pfnProgressCallback)
214	rc = m_pfnProgressCallback(cbRead, m_pvProgressUser);
215
216	return rc;
217	}
218
219	/******************************************************************************
220	* DnDHGSendDataMessagePrivate *
221	******************************************************************************/
222
223	DnDHGSendDataMessagePrivate::DnDHGSendDataMessagePrivate(uint32_t uMsg, uint32_t cParms, VBOXHGCMSVCPARM paParms[], PFNDNDPRIVATEPROGRESS pfnProgressCallback, void *pvProgressUser)
224	: m_cbSize(paParms[4].u.uint32)
225	, m_cbDone(0)
226	, m_pfnProgressCallback(pfnProgressCallback)
227	, m_pvProgressUser(pvProgressUser)
228	{
229	/* Create the initial data message. */
230	m_pNextMsg = new HGCM::Message(uMsg, cParms, paParms);
231	}
232
233	int DnDHGSendDataMessagePrivate::currentMessage(uint32_t uMsg, uint32_t cParms, VBOXHGCMSVCPARM paParms[])
234	{
235	/* Todo: don't copy the data parts ... just move the data pointer in
236	* the original data ptr. */
237	if (!m_pNextMsg)
238	return VERR_NO_DATA;
239
240	int rc = VINF_SUCCESS;
241
242	HGCM::Message *pCurMsg = m_pNextMsg;
243	m_pNextMsg = 0;
244	rc = pCurMsg->getData(uMsg, cParms, paParms);
245	/* Depending on the current message, the data pointer is on a
246	* different position (HOST_DND_HG_SND_DATA=3;
247	* HOST_DND_HG_SND_MORE_DATA=0). */
248	int iPos = uMsg == DragAndDropSvc::HOST_DND_HG_SND_DATA ? 3 : 0;
249	m_cbDone += paParms[iPos + 1].u.uint32;
250	/* Info & data send already? */
251	if (rc == VERR_BUFFER_OVERFLOW)
252	{
253	paParms[iPos + 1].u.uint32 = paParms[iPos].u.pointer.size;
254	VBOXHGCMSVCPARM paTmpParms[2];
255	void *pvOldData;
256	uint32_t cOldData;
257	pCurMsg->getParmPtrInfo(iPos, &pvOldData, &cOldData);
258	paTmpParms[0].setPointer(static_cast<uint8_t*>(pvOldData) + paParms[iPos].u.pointer.size, cOldData - paParms[iPos].u.pointer.size);
259	paTmpParms[1].setUInt32(cOldData - paParms[iPos].u.pointer.size);
260	m_pNextMsg = new HGCM::Message(DragAndDropSvc::HOST_DND_HG_SND_MORE_DATA, 2, paTmpParms);
261	}
262	delete pCurMsg;
263
264	/* Advance progress info */
265	if ( RT_SUCCESS(rc)
266	&& m_pfnProgressCallback)
267	rc = m_pfnProgressCallback(m_cbDone, m_pvProgressUser);
268
269	return rc;
270	}
271
272	/******************************************************************************
273	* DnDHGSendDataMessage *
274	******************************************************************************/
275
276	/*
277	* This class is a meta message class. It doesn't consist of any own message
278	* data, but handle the meta info, the data itself as well any files or
279	* directories which have to be transfered to the guest.
280	*/
281	DnDHGSendDataMessage::DnDHGSendDataMessage(uint32_t uMsg, uint32_t cParms, VBOXHGCMSVCPARM paParms[], PFNDNDPROGRESS pfnProgressCallback, void *pvProgressUser)
282	: m_cbAll(0)
283	, m_cbTransfered(0)
284	, m_pfnProgressCallback(pfnProgressCallback)
285	, m_pvProgressUser(pvProgressUser)
286	{
287	RTCString strNewUris;
288	/* Check the format for any uri type. */
289	if (hasFileUrls(static_cast<const char*>(paParms[1].u.pointer.addr), paParms[1].u.pointer.size))
290	{
291	DO(("old data '%s'\n", (char*)paParms[3].u.pointer.addr));
292	/* The list is separated by newline (Even if only one file is
293	* listed). */
294	RTCList<RTCString> oldUriList = RTCString(static_cast<const char*>(paParms[3].u.pointer.addr), paParms[3].u.pointer.size).split("\r\n");
295	if (!oldUriList.isEmpty())
296	{
297	RTCList<RTCString> newUriList;
298	for (size_t i = 0; i < oldUriList.size(); ++i)
299	{
300	const RTCString &strUri = oldUriList.at(i);
301	/* Query the path component of a file URI. If this hasn't a
302	* file scheme null is returned. */
303	if (char *pszFilePath = RTUriFilePath(strUri.c_str(), URI_FILE_FORMAT_AUTO))
304	{
305	/* Add the path to our internal file list (recursive in
306	* the case of a directory). */
307	if (char *pszFilename = RTPathFilename(pszFilePath))
308	{
309	char *pszNewUri = RTUriFileCreate(pszFilename);
310	if (pszNewUri)
311	{
312	newUriList.append(pszNewUri);
313	RTStrFree(pszNewUri);
314	buildFileTree(pszFilePath, pszFilename - pszFilePath);
315	}
316	}
317	RTStrFree(pszFilePath);
318	}
319	else
320	newUriList.append(strUri);
321	}
322	/* We have to change the actual DnD data. Remove any host paths and
323	* just decode the filename into the new data. The guest tools will
324	* add the correct path again, before sending the DnD drop event to
325	* some window. */
326	strNewUris = RTCString::join(newUriList, "\r\n") + "\r\n";
327	/* Remark: We don't delete the old pointer here, cause this is done
328	* by the caller. We just use the RTString data, which has the
329	* scope of this ctor. This is enough cause the data is copied in
330	* the DnDHGSendDataMessagePrivate anyway. */
331	paParms[3].u.pointer.addr = (void*)strNewUris.c_str();
332	paParms[3].u.pointer.size = strNewUris.length() + 1;
333	paParms[4].u.uint32 = strNewUris.length() + 1;
334	}
335	}
336	/* Add the size of the data to the todo list. */
337	m_cbAll += paParms[4].u.uint32;
338	/* The first message is the meta info for the data and the data itself. */
339	m_pNextPathMsg = new DnDHGSendDataMessagePrivate(uMsg, cParms, paParms, &DnDHGSendDataMessage::progressCallback, this);
340
341	DO(("new data '%s'\n", (char*)paParms[3].u.pointer.addr));
342	DO(("cbAll: %u\n", m_cbAll));
343	DO(("cbData: %u\n", paParms[4].u.uint32));
344
345	for (size_t i = 0; i < m_uriList.size(); ++i)
346	DO(("file: %s : %s - %o - %ld\n", m_uriList.at(i).m_strHostPath.c_str(), m_uriList.at(i).m_strGuestPath.c_str(), m_uriList.at(i).m_fMode, m_uriList.at(i).m_cbSize));
347	}
348
349	DnDHGSendDataMessage::~DnDHGSendDataMessage()
350	{
351	if (m_pNextPathMsg)
352	delete m_pNextPathMsg;
353	}
354
355	HGCM::Message* DnDHGSendDataMessage::nextHGCMMessage()
356	{
357	if (!m_pNextPathMsg)
358	return NULL;
359
360	return m_pNextPathMsg->nextHGCMMessage();
361	}
362
363	int DnDHGSendDataMessage::currentMessageInfo(uint32_t puMsg, uint32_t pcParms)
364	{
365	if (!m_pNextPathMsg)
366	return VERR_NO_DATA;
367
368	return m_pNextPathMsg->currentMessageInfo(puMsg, pcParms);
369	}
370
371	int DnDHGSendDataMessage::currentMessage(uint32_t uMsg, uint32_t cParms, VBOXHGCMSVCPARM paParms[])
372	{
373	if (!m_pNextPathMsg)
374	return VERR_NO_DATA;
375
376	/* Fill the data out of our current queued message. */
377	int rc = m_pNextPathMsg->currentMessage(uMsg, cParms, paParms);
378	/* Has this message more data to deliver? */
379	if (!m_pNextPathMsg->isMessageWaiting())
380	{
381	delete m_pNextPathMsg;
382	m_pNextPathMsg = NULL;
383	}
384
385	/* File data to send? */
386	if (!m_pNextPathMsg)
387	{
388	if (m_uriList.isEmpty())
389	return rc;
390	/* Create new messages based on our internal path list. Currently
391	* this could be directories or regular files. */
392	PathEntry nextPath = m_uriList.first();
393	if (RTFS_IS_DIRECTORY(nextPath.m_fMode))
394	m_pNextPathMsg = new DnDHGSendDirPrivate(nextPath.m_strGuestPath, nextPath.m_fMode, nextPath.m_cbSize, &DnDHGSendDataMessage::progressCallback, this);
395	else if (RTFS_IS_FILE(nextPath.m_fMode))
396	m_pNextPathMsg = new DnDHGSendFilePrivate(nextPath.m_strHostPath, nextPath.m_strGuestPath, nextPath.m_fMode, nextPath.m_cbSize, &DnDHGSendDataMessage::progressCallback, this);
397	else
398	AssertMsgFailedReturn(("type '%d' is not supported for path '%s'", nextPath.m_fMode, nextPath.m_strHostPath.c_str()), VERR_NO_DATA);
399	m_uriList.removeFirst();
400	}
401	return rc;
402	}
403
404	bool DnDHGSendDataMessage::hasFileUrls(const char *pcszFormat, size_t cbMax) const
405	{
406	DO(("format %s\n", pcszFormat));
407	/* text/uri also an official variant? */
408	return RTStrNICmp(pcszFormat, "text/uri-list", cbMax) == 0
409	\|\| RTStrNICmp(pcszFormat, "x-special/gnome-icon-list", cbMax) == 0;
410	}
411
412	int DnDHGSendDataMessage::buildFileTree(const char *pcszPath, size_t cbBaseLen)
413	{
414	RTFSOBJINFO objInfo;
415	int rc = RTPathQueryInfo(pcszPath, &objInfo, RTFSOBJATTRADD_NOTHING);
416	if (RT_FAILURE(rc))
417	return rc;
418
419	/* These are the types we currently support. Symlinks are not directly
420	* supported. First the guest could be an OS which doesn't support it and
421	* second the symlink could point to a file which is out of the base tree.
422	* Both things are hard to support. For now we just copy the target file in
423	* this case. */
424	if (!( RTFS_IS_DIRECTORY(objInfo.Attr.fMode)
425	\|\| RTFS_IS_FILE(objInfo.Attr.fMode)
426	\|\| RTFS_IS_SYMLINK(objInfo.Attr.fMode)))
427	return VINF_SUCCESS;
428
429	uint64_t cbSize = 0;
430	rc = RTFileQuerySize(pcszPath, &cbSize);
431	if (rc == VERR_IS_A_DIRECTORY)
432	rc = VINF_SUCCESS;
433	if (RT_FAILURE(rc))
434	return rc;
435	m_uriList.append(PathEntry(pcszPath, &pcszPath[cbBaseLen], objInfo.Attr.fMode, cbSize));
436	m_cbAll += cbSize;
437	DO(("cbFile: %u\n", cbSize));
438
439	PRTDIR hDir;
440	/* We have to try to open even symlinks, cause they could be symlinks
441	* to directories. */
442	rc = RTDirOpen(&hDir, pcszPath);
443	/* The following error happens when this was a symlink to an file or a
444	* regular file. */
445	if (rc == VERR_PATH_NOT_FOUND)
446	return VINF_SUCCESS;
447	if (RT_FAILURE(rc))
448	return rc;
449
450	while (RT_SUCCESS(rc))
451	{
452	RTDIRENTRY DirEntry;
453	rc = RTDirRead(hDir, &DirEntry, NULL);
454	if (RT_FAILURE(rc))
455	{
456	if (rc == VERR_NO_MORE_FILES)
457	rc = VINF_SUCCESS;
458	break;
459	}
460	switch (DirEntry.enmType)
461	{
462	case RTDIRENTRYTYPE_DIRECTORY:
463	{
464	/* Skip "." and ".." entries. */
465	if ( RTStrCmp(DirEntry.szName, ".") == 0
466	\|\| RTStrCmp(DirEntry.szName, "..") == 0)
467	break;
468	if (char *pszRecDir = RTStrAPrintf2("%s%c%s", pcszPath, RTPATH_DELIMITER, DirEntry.szName))
469	{
470	rc = buildFileTree(pszRecDir, cbBaseLen);
471	RTStrFree(pszRecDir);
472	}
473	else
474	rc = VERR_NO_MEMORY;
475	break;
476	}
477	case RTDIRENTRYTYPE_SYMLINK:
478	case RTDIRENTRYTYPE_FILE:
479	{
480	if (char *pszNewFile = RTStrAPrintf2("%s%c%s", pcszPath, RTPATH_DELIMITER, DirEntry.szName))
481	{
482	/* We need the size and the mode of the file. */
483	RTFSOBJINFO objInfo1;
484	rc = RTPathQueryInfo(pszNewFile, &objInfo1, RTFSOBJATTRADD_NOTHING);
485	if (RT_FAILURE(rc))
486	return rc;
487	rc = RTFileQuerySize(pszNewFile, &cbSize);
488	if (RT_FAILURE(rc))
489	break;
490	m_uriList.append(PathEntry(pszNewFile, &pszNewFile[cbBaseLen], objInfo1.Attr.fMode, cbSize));
491	m_cbAll += cbSize;
492	RTStrFree(pszNewFile);
493	}
494	else
495	rc = VERR_NO_MEMORY;
496	break;
497	}
498	default: break;
499	}
500	}
501	RTDirClose(hDir);
502
503	return rc;
504	}
505
506	int DnDHGSendDataMessage::progressCallback(size_t cbDone, void *pvUser)
507	{
508	AssertPtrReturn(pvUser, VERR_INVALID_POINTER);
509
510	DnDHGSendDataMessage pSelf = static_cast<DnDHGSendDataMessage >(pvUser);
511
512	/* How many bytes are transfered already. */
513	pSelf->m_cbTransfered += cbDone;
514
515	/* Advance progress info */
516	int rc = VINF_SUCCESS;
517	if ( pSelf->m_pfnProgressCallback
518	&& pSelf->m_cbAll)
519	rc = pSelf->m_pfnProgressCallback((uint64_t)pSelf->m_cbTransfered * 100 / pSelf->m_cbAll,
520	DragAndDropSvc::DND_PROGRESS_RUNNING, pSelf->m_pvProgressUser);
521
522	return rc;
523	}
524
525	/******************************************************************************
526	* DnDManager *
527	******************************************************************************/
528
529	int DnDManager::addMessage(uint32_t uMsg, uint32_t cParms, VBOXHGCMSVCPARM paParms[])
530	{
531	int rc = VINF_SUCCESS;
532	switch (uMsg)
533	{
534	case DragAndDropSvc::HOST_DND_HG_EVT_ENTER:
535	{
536	clear();
537	LogFlowFunc(("HOST_DND_HG_EVT_ENTER\n"));
538	DO(("HOST_DND_HG_EVT_ENTER\n"));
539	/* Verify parameter count and types. */
540	if ( cParms != 7
541	\|\| paParms[0].type != VBOX_HGCM_SVC_PARM_32BIT /* screen id */
542	\|\| paParms[1].type != VBOX_HGCM_SVC_PARM_32BIT /* x-pos */
543	\|\| paParms[2].type != VBOX_HGCM_SVC_PARM_32BIT /* y-pos */
544	\|\| paParms[3].type != VBOX_HGCM_SVC_PARM_32BIT /* default action */
545	\|\| paParms[4].type != VBOX_HGCM_SVC_PARM_32BIT /* allowed actions */
546	\|\| paParms[5].type != VBOX_HGCM_SVC_PARM_PTR /* data */
547	\|\| paParms[6].type != VBOX_HGCM_SVC_PARM_32BIT /* size */)
548	rc = VERR_INVALID_PARAMETER;
549	else
550	{
551	m_fOpInProcess = true;
552	DnDGenericMessage *pMessage = new DnDGenericMessage(uMsg, cParms, paParms);
553	m_dndMessageQueue.append(pMessage);
554	}
555	break;
556	}
557	case DragAndDropSvc::HOST_DND_HG_EVT_MOVE:
558	{
559	LogFlowFunc(("HOST_DND_HG_EVT_MOVE\n"));
560	DO(("HOST_DND_HG_EVT_MOVE\n"));
561	/* Verify parameter count and types. */
562	if ( cParms != 7
563	\|\| paParms[0].type != VBOX_HGCM_SVC_PARM_32BIT /* screen id */
564	\|\| paParms[1].type != VBOX_HGCM_SVC_PARM_32BIT /* x-pos */
565	\|\| paParms[2].type != VBOX_HGCM_SVC_PARM_32BIT /* y-pos */
566	\|\| paParms[3].type != VBOX_HGCM_SVC_PARM_32BIT /* default action */
567	\|\| paParms[4].type != VBOX_HGCM_SVC_PARM_32BIT /* allowed actions */
568	\|\| paParms[5].type != VBOX_HGCM_SVC_PARM_PTR /* data */
569	\|\| paParms[6].type != VBOX_HGCM_SVC_PARM_32BIT /* size */)
570	rc = VERR_INVALID_PARAMETER;
571	else
572	{
573	m_fOpInProcess = true;
574	DnDGenericMessage *pMessage = new DnDGenericMessage(uMsg, cParms, paParms);
575	m_dndMessageQueue.append(pMessage);
576	}
577	break;
578	}
579	case DragAndDropSvc::HOST_DND_HG_EVT_LEAVE:
580	{
581	LogFlowFunc(("HOST_DND_HG_EVT_LEAVE\n"));
582	DO(("HOST_DND_HG_EVT_LEAVE\n"));
583
584	/* Verify parameter count and types. */
585	if (cParms != 0)
586	rc = VERR_INVALID_PARAMETER;
587	else
588	{
589	DnDGenericMessage *pMessage = new DnDGenericMessage(uMsg, cParms, paParms);
590	m_dndMessageQueue.append(pMessage);
591	}
592	m_fOpInProcess = false;
593	break;
594	}
595	case DragAndDropSvc::HOST_DND_HG_EVT_DROPPED:
596	{
597	LogFlowFunc(("HOST_DND_HG_EVT_DROPPED\n"));
598	DO(("HOST_DND_HG_EVT_DROPPED\n"));
599	/* Verify parameter count and types. */
600	if ( cParms != 7
601	\|\| paParms[0].type != VBOX_HGCM_SVC_PARM_32BIT /* screen id */
602	\|\| paParms[1].type != VBOX_HGCM_SVC_PARM_32BIT /* x-pos */
603	\|\| paParms[2].type != VBOX_HGCM_SVC_PARM_32BIT /* y-pos */
604	\|\| paParms[3].type != VBOX_HGCM_SVC_PARM_32BIT /* default action */
605	\|\| paParms[4].type != VBOX_HGCM_SVC_PARM_32BIT /* allowed actions */
606	\|\| paParms[5].type != VBOX_HGCM_SVC_PARM_PTR /* data */
607	\|\| paParms[6].type != VBOX_HGCM_SVC_PARM_32BIT /* size */)
608	rc = VERR_INVALID_PARAMETER;
609	else
610	{
611	DnDGenericMessage *pMessage = new DnDGenericMessage(uMsg, cParms, paParms);
612	m_dndMessageQueue.append(pMessage);
613	}
614	break;
615	}
616	case DragAndDropSvc::HOST_DND_HG_SND_DATA:
617	{
618	LogFlowFunc(("HOST_DND_HG_SND_DATA\n"));
619	DO(("HOST_DND_HG_SND_DATA\n"));
620
621	/* Verify parameter count and types. */
622	if ( cParms != 5
623	\|\| paParms[0].type != VBOX_HGCM_SVC_PARM_32BIT /* screen id */
624	\|\| paParms[1].type != VBOX_HGCM_SVC_PARM_PTR /* format */
625	\|\| paParms[2].type != VBOX_HGCM_SVC_PARM_32BIT /* format size */
626	\|\| paParms[3].type != VBOX_HGCM_SVC_PARM_PTR /* data */
627	\|\| paParms[4].type != VBOX_HGCM_SVC_PARM_32BIT /* data size */)
628	rc = VERR_INVALID_PARAMETER;
629	else
630	{
631	DnDHGSendDataMessage *pMessage = new DnDHGSendDataMessage(uMsg, cParms, paParms, m_pfnProgressCallback, m_pvProgressUser);
632	m_dndMessageQueue.append(pMessage);
633	}
634	break;
635	}
636	#ifdef VBOX_WITH_DRAG_AND_DROP_GH
637	case DragAndDropSvc::HOST_DND_GH_REQ_PENDING:
638	{
639	LogFlowFunc(("HOST_DND_GH_REQ_PENDING\n"));
640	DO(("HOST_DND_GH_REQ_PENDING\n"));
641
642	/* Verify parameter count and types. */
643	if ( cParms != 1
644	\|\| paParms[0].type != VBOX_HGCM_SVC_PARM_32BIT /* screen id */)
645	rc = VERR_INVALID_PARAMETER;
646	else
647	{
648	DnDGenericMessage *pMessage = new DnDGenericMessage(uMsg, cParms, paParms);
649	m_dndMessageQueue.append(pMessage);
650	}
651	break;
652	}
653	case DragAndDropSvc::HOST_DND_GH_EVT_DROPPED:
654	{
655	LogFlowFunc(("HOST_DND_GH_EVT_DROPPED\n"));
656	DO(("HOST_DND_GH_EVT_DROPPED\n"));
657
658	/* Verify parameter count and types. */
659	if ( cParms != 3
660	\|\| paParms[0].type != VBOX_HGCM_SVC_PARM_PTR /* format */
661	\|\| paParms[1].type != VBOX_HGCM_SVC_PARM_32BIT /* format size */
662	\|\| paParms[2].type != VBOX_HGCM_SVC_PARM_32BIT /* action */)
663	rc = VERR_INVALID_PARAMETER;
664	else
665	{
666	DnDGenericMessage *pMessage = new DnDGenericMessage(uMsg, cParms, paParms);
667	m_dndMessageQueue.append(pMessage);
668	}
669	break;
670	}
671	#endif
672	default: rc = VERR_NOT_IMPLEMENTED; break;
673	}
674
675	return rc;
676	}
677
678	HGCM::Message* DnDManager::nextHGCMMessage()
679	{
680	if (m_pCurMsg)
681	return m_pCurMsg->nextHGCMMessage();
682	else
683	{
684	if (m_dndMessageQueue.isEmpty())
685	return 0;
686
687	return m_dndMessageQueue.first()->nextHGCMMessage();
688	}
689	}
690
691	int DnDManager::nextMessageInfo(uint32_t puMsg, uint32_t pcParms)
692	{
693	AssertPtrReturn(puMsg, VERR_INVALID_POINTER);
694	AssertPtrReturn(pcParms, VERR_INVALID_POINTER);
695
696	int rc = VINF_SUCCESS;
697
698	if (m_pCurMsg)
699	rc = m_pCurMsg->currentMessageInfo(puMsg, pcParms);
700	else
701	{
702	if (m_dndMessageQueue.isEmpty())
703	{
704	rc = VERR_NO_DATA;
705	// if (m_pfnProgressCallback)
706	// m_pfnProgressCallback(100.0, DragAndDropSvc::DND_OP_CANCELLED, m_pvProgressUser);
707	}
708	else
709	rc = m_dndMessageQueue.first()->currentMessageInfo(puMsg, pcParms);
710	}
711
712	DO(("next msg info: %d %d %Rrc\n", puMsg, pcParms, rc));
713	return rc;
714	}
715
716	int DnDManager::nextMessage(uint32_t uMsg, uint32_t cParms, VBOXHGCMSVCPARM paParms[])
717	{
718	if (!m_pCurMsg)
719	{
720	/* Check for pending messages in our queue. */
721	if (m_dndMessageQueue.isEmpty())
722	return VERR_NO_DATA;
723	m_pCurMsg = m_dndMessageQueue.first();
724	m_dndMessageQueue.removeFirst();
725	}
726
727	/* Fetch the current message info */
728	int rc = m_pCurMsg->currentMessage(uMsg, cParms, paParms);
729	/* If this message not provide any additional sub messages, clear it. */
730	if (!m_pCurMsg->isMessageWaiting())
731	{
732	delete m_pCurMsg;
733	m_pCurMsg = 0;
734	}
735
736	/* If the user has canceled the operation, we need to cleanup all pending
737	* events and inform the progress callback about our successful cleanup. */
738	if ( rc == VERR_CANCELLED
739	&& m_pfnProgressCallback)
740	{
741	/* Clear any pending messages */
742	clear();
743	/* Create a new cancel message to inform the guest. */
744	m_pCurMsg = new DnDHGCancelMessage();
745	m_pfnProgressCallback(100, DragAndDropSvc::DND_PROGRESS_CANCELLED, m_pvProgressUser);
746	}
747
748	DO(("next msg: %d %d %Rrc\n", uMsg, cParms, rc));
749	return rc;
750	}
751
752	void DnDManager::clear()
753	{
754	if (m_pCurMsg)
755	{
756	delete m_pCurMsg;
757	m_pCurMsg = 0;
758	}
759	while (!m_dndMessageQueue.isEmpty())
760	{
761	delete m_dndMessageQueue.last();
762	m_dndMessageQueue.removeLast();
763	}
764	}
765

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source: vbox/trunk/src/VBox/HostServices/DragAndDrop/dndmanager.cpp@ 44102

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