HostUSBDeviceImpl.cpp@ 895

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1	/** @file
2	*
3	* VirtualBox IHostUSBDevice COM interface implementation
4	*/
5
6	/*
7	* Copyright (C) 2006 InnoTek Systemberatung GmbH
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 as published by the Free Software Foundation,
13	* in version 2 as it comes in the "COPYING" file of the VirtualBox OSE
14	* distribution. VirtualBox OSE is distributed in the hope that it will
15	* be useful, but WITHOUT ANY WARRANTY of any kind.
16	*
17	* If you received this file as part of a commercial VirtualBox
18	* distribution, then only the terms of your commercial VirtualBox
19	* license agreement apply instead of the previous paragraph.
20	*/
21
22	#include "HostUSBDeviceImpl.h"
23	#include "USBProxyService.h"
24	#include "Logging.h"
25
26	#include <VBox/err.h>
27
28
29	// constructor / destructor
30	/////////////////////////////////////////////////////////////////////////////
31
32	HostUSBDevice::HostUSBDevice()
33	: mUSBProxyService (NULL), m_pUsb (NULL)
34	{
35	}
36
37	HostUSBDevice::~HostUSBDevice()
38	{
39	if (m_pUsb)
40	{
41	USBProxyService::freeDevice (m_pUsb);
42	m_pUsb = NULL;
43	}
44	}
45
46	// public initializer/uninitializer for internal purposes only
47	/////////////////////////////////////////////////////////////////////////////
48
49	/**
50	* Initializes the USB device object.
51	*
52	* @returns COM result indicator
53	* @param aUsb Pointer to the usb device structure for which the object is to be a wrapper.
54	* This structure is now fully owned by the HostUSBDevice object and will be
55	* freed when it is destructed.
56	* @param aUSBProxyService Pointer to the USB Proxy Service object.
57	*/
58	HRESULT HostUSBDevice::init(PUSBDEVICE aUsb, USBProxyService *aUSBProxyService)
59	{
60	ComAssertRet (aUsb, E_INVALIDARG);
61
62	AutoLock alock (this);
63
64	/*
65	* We need a unique ID for this VBoxSVC session.
66	* The UUID isn't stored anywhere.
67	*/
68	mId.create();
69
70	/*
71	* Convert from USBDEVICESTATE to USBDeviceState.
72	*
73	* Note that not all proxy backend can detect the HELD_BY_PROXY
74	* and USED_BY_GUEST states. But that shouldn't matter much.
75	*/
76	switch (aUsb->enmState)
77	{
78	default:
79	AssertMsgFailed(("aUsb->enmState=%d\n", aUsb->enmState));
80	case USBDEVICESTATE_UNSUPPORTED:
81	mState = USBDeviceState_USBDeviceNotSupported;
82	break;
83	case USBDEVICESTATE_USED_BY_HOST:
84	mState = USBDeviceState_USBDeviceUnavailable;
85	break;
86	case USBDEVICESTATE_USED_BY_HOST_CAPTURABLE:
87	mState = USBDeviceState_USBDeviceBusy;
88	break;
89	case USBDEVICESTATE_UNUSED:
90	mState = USBDeviceState_USBDeviceAvailable;
91	break;
92	case USBDEVICESTATE_HELD_BY_PROXY:
93	mState = USBDeviceState_USBDeviceHeld;
94	break;
95	case USBDEVICESTATE_USED_BY_GUEST:
96	mState = USBDeviceState_USBDeviceCaptured;
97	break;
98	}
99
100	/*
101	* Other data members.
102	*/
103	mIgnored = false;
104	mUSBProxyService = aUSBProxyService;
105	m_pUsb = aUsb;
106
107	setReady (true);
108	return S_OK;
109	}
110
111	// IUSBDevice properties
112	/////////////////////////////////////////////////////////////////////////////
113
114	/**
115	* Returns the GUID.
116	*
117	* @returns COM status code
118	* @param aId Address of result variable.
119	*/
120	STDMETHODIMP HostUSBDevice::COMGETTER(Id)(GUIDPARAMOUT aId)
121	{
122	if (!aId)
123	return E_INVALIDARG;
124
125	AutoLock alock (this);
126	CHECK_READY();
127
128	mId.cloneTo (aId);
129	return S_OK;
130	}
131
132
133	/**
134	* Returns the vendor Id.
135	*
136	* @returns COM status code
137	* @param aVendorId Where to store the vendor id.
138	*/
139	STDMETHODIMP HostUSBDevice::COMGETTER(VendorId)(USHORT *aVendorId)
140	{
141	if (!aVendorId)
142	return E_INVALIDARG;
143
144	AutoLock alock (this);
145	CHECK_READY();
146
147	*aVendorId = m_pUsb->idVendor;
148	return S_OK;
149	}
150
151
152	/**
153	* Returns the product Id.
154	*
155	* @returns COM status code
156	* @param aProductId Where to store the product id.
157	*/
158	STDMETHODIMP HostUSBDevice::COMGETTER(ProductId)(USHORT *aProductId)
159	{
160	if (!aProductId)
161	return E_INVALIDARG;
162
163	AutoLock alock (this);
164	CHECK_READY();
165
166	*aProductId = m_pUsb->idProduct;
167	return S_OK;
168	}
169
170
171	/**
172	* Returns the revision BCD.
173	*
174	* @returns COM status code
175	* @param aRevision Where to store the revision BCD.
176	*/
177	STDMETHODIMP HostUSBDevice::COMGETTER(Revision)(USHORT *aRevision)
178	{
179	if (!aRevision)
180	return E_INVALIDARG;
181
182	AutoLock alock (this);
183	CHECK_READY();
184
185	*aRevision = m_pUsb->bcdDevice;
186	return S_OK;
187	}
188
189	/**
190	* Returns the manufacturer string.
191	*
192	* @returns COM status code
193	* @param aManufacturer Where to put the return string.
194	*/
195	STDMETHODIMP HostUSBDevice::COMGETTER(Manufacturer)(BSTR *aManufacturer)
196	{
197	if (!aManufacturer)
198	return E_INVALIDARG;
199
200	AutoLock alock (this);
201	CHECK_READY();
202
203	Bstr (m_pUsb->pszManufacturer).cloneTo (aManufacturer);
204	return S_OK;
205	}
206
207
208	/**
209	* Returns the product string.
210	*
211	* @returns COM status code
212	* @param aProduct Where to put the return string.
213	*/
214	STDMETHODIMP HostUSBDevice::COMGETTER(Product)(BSTR *aProduct)
215	{
216	if (!aProduct)
217	return E_INVALIDARG;
218
219	AutoLock alock (this);
220	CHECK_READY();
221
222	Bstr (m_pUsb->pszProduct).cloneTo (aProduct);
223	return S_OK;
224	}
225
226
227	/**
228	* Returns the serial number string.
229	*
230	* @returns COM status code
231	* @param aSerialNumber Where to put the return string.
232	*/
233	STDMETHODIMP HostUSBDevice::COMGETTER(SerialNumber)(BSTR *aSerialNumber)
234	{
235	if (!aSerialNumber)
236	return E_INVALIDARG;
237
238	AutoLock alock (this);
239	CHECK_READY();
240
241	Bstr (m_pUsb->pszSerialNumber).cloneTo (aSerialNumber);
242	return S_OK;
243	}
244
245	/**
246	* Returns the device address string.
247	*
248	* @returns COM status code
249	* @param aAddress Where to put the returned string.
250	*/
251	STDMETHODIMP HostUSBDevice::COMGETTER(Address)(BSTR *aAddress)
252	{
253	if (!aAddress)
254	return E_INVALIDARG;
255
256	AutoLock alock (this);
257	CHECK_READY();
258
259	Bstr (m_pUsb->pszAddress).cloneTo (aAddress);
260	return S_OK;
261	}
262
263	STDMETHODIMP HostUSBDevice::COMGETTER(Port)(USHORT *aPort)
264	{
265	if (!aPort)
266	return E_INVALIDARG;
267
268	AutoLock alock (this);
269	CHECK_READY();
270
271	///@todo implement
272	aPort = 0;
273	return S_OK;
274	}
275
276	STDMETHODIMP HostUSBDevice::COMGETTER(Remote)(BOOL *aRemote)
277	{
278	if (!aRemote)
279	return E_INVALIDARG;
280
281	AutoLock alock (this);
282	CHECK_READY();
283
284	*aRemote = FALSE;
285	return S_OK;
286	}
287
288	// IHostUSBDevice properties
289	/////////////////////////////////////////////////////////////////////////////
290
291	STDMETHODIMP HostUSBDevice::COMGETTER(State) (USBDeviceState_T *aState)
292	{
293	if (!aState)
294	return E_POINTER;
295
296	AutoLock lock (this);
297	CHECK_READY();
298
299	*aState = mState;
300	return S_OK;
301	}
302
303
304	// public methods only for internal purposes
305	////////////////////////////////////////////////////////////////////////////////
306
307	Utf8Str HostUSBDevice::name()
308	{
309	Utf8Str name;
310
311	AutoLock alock (this);
312	AssertReturn (isReady(), name);
313
314	bool haveManufacturer = m_pUsb->pszManufacturer && *m_pUsb->pszManufacturer;
315	bool haveProduct = m_pUsb->pszProduct && *m_pUsb->pszProduct;
316	if (haveManufacturer && haveProduct)
317	name = Utf8StrFmt ("%s %s", m_pUsb->pszManufacturer,
318	m_pUsb->pszProduct);
319	else if(haveManufacturer)
320	name = Utf8StrFmt ("%s", m_pUsb->pszManufacturer);
321	else if(haveProduct)
322	name = Utf8StrFmt ("%s", m_pUsb->pszManufacturer);
323	else
324	name = "<unknown>";
325
326	return name;
327	}
328
329	/** Sets the ignored flag and returns the device to the host */
330	void HostUSBDevice::setIgnored()
331	{
332	AutoLock alock (this);
333	AssertReturn (isReady(), (void) 0);
334
335	AssertReturn (!mIgnored, (void) 0);
336
337	mIgnored = false;
338	setHostDriven();
339	}
340
341	/** Requests the capture */
342	bool HostUSBDevice::setCaptured (SessionMachine *aMachine)
343	{
344	AssertReturn (aMachine, false);
345
346	AutoLock alock (this);
347	AssertReturn (isReady(), false);
348
349	AssertReturn (
350	mState == USBDeviceState_USBDeviceBusy \|\|
351	mState == USBDeviceState_USBDeviceAvailable \|\|
352	mState == USBDeviceState_USBDeviceHeld,
353	false);
354
355	mUSBProxyService->captureDevice (this);
356
357	mState = USBDeviceState_USBDeviceCaptured;
358	mMachine = aMachine;
359
360	return true;
361	}
362
363	/**
364	* Returns the device back to the host
365	*
366	* @returns VBox status code.
367	*/
368	int HostUSBDevice::setHostDriven()
369	{
370	AutoLock alock (this);
371	AssertReturn (isReady(), VERR_INVALID_PARAMETER);
372
373	AssertReturn (mState == USBDeviceState_USBDeviceHeld, VERR_INVALID_PARAMETER);
374
375	mState = USBDeviceState_USBDeviceAvailable;
376
377	return mUSBProxyService->releaseDevice (this);
378	}
379
380	/**
381	* Resets the device as if it were just attached to the host
382	*
383	* @returns VBox status code.
384	*/
385	int HostUSBDevice::reset()
386	{
387	AutoLock alock (this);
388	AssertReturn (isReady(), VERR_INVALID_PARAMETER);
389
390	mState = USBDeviceState_USBDeviceHeld;
391	mMachine.setNull();
392	mIgnored = false;
393
394	/** @todo this operation might fail and cause the device to the reattached with a different address and all that. */
395	return mUSBProxyService->resetDevice (this);
396	}
397
398	/**
399	* Sets the state of the device, as it was reported by the host.
400	* This method applicable only for devices currently controlled by the host.
401	*
402	* @param aState new state
403	*/
404	void HostUSBDevice::setHostState (USBDeviceState_T aState)
405	{
406	AssertReturn (
407	aState == USBDeviceState_USBDeviceUnavailable \|\|
408	aState == USBDeviceState_USBDeviceBusy \|\|
409	aState == USBDeviceState_USBDeviceAvailable,
410	(void) 0);
411
412	AssertReturn (
413	mState == USBDeviceState_USBDeviceNotSupported \|\| /* initial state */
414	mState == USBDeviceState_USBDeviceUnavailable \|\|
415	mState == USBDeviceState_USBDeviceBusy \|\|
416	mState == USBDeviceState_USBDeviceAvailable,
417	(void) 0);
418
419	if (mState != aState)
420	{
421	mState = aState;
422	}
423	}
424
425	/**
426	* Returns true if this device matches the given filter data.
427	*
428	* @note It is assumed, that the filter data owner is appropriately
429	* locked before calling this method.
430	*
431	* @note
432	* This method MUST correlate with
433	* USBController::hasMatchingFilter (IUSBDevice *)
434	* in the sense of the device matching logic.
435	*/
436	bool HostUSBDevice::isMatch (const USBDeviceFilter::Data &aData)
437	{
438	AutoLock alock (this);
439	AssertReturn (isReady(), false);
440
441	if (!aData.mActive)
442	return false;
443
444	if (!aData.mVendorId.isMatch (m_pUsb->idVendor))
445	{
446	LogFlowMember (("HostUSBDevice::isMatch: vendor not match %04X\n",
447	m_pUsb->idVendor));
448	return false;
449	}
450	if (!aData.mProductId.isMatch (m_pUsb->idProduct))
451	{
452	LogFlowMember (("HostUSBDevice::isMatch: product id not match %04X\n",
453	m_pUsb->idProduct));
454	return false;
455	}
456	if (!aData.mRevision.isMatch (m_pUsb->bcdDevice))
457	{
458	LogFlowMember (("HostUSBDevice::isMatch: rev not match %04X\n",
459	m_pUsb->bcdDevice));
460	return false;
461	}
462
463	#if !defined (__WIN__)
464	// these filters are temporarily ignored on Win32
465	if (!aData.mManufacturer.isMatch (Bstr (m_pUsb->pszManufacturer)))
466	return false;
467	if (!aData.mProduct.isMatch (Bstr (m_pUsb->pszProduct)))
468	return false;
469	if (!aData.mSerialNumber.isMatch (Bstr (m_pUsb->pszSerialNumber)))
470	return false;
471	/// @todo (dmik) pusPort is yet absent
472	// if (!aData.mPort.isMatch (Bstr (m_pUsb->pusPort)))
473	// return false;
474	#endif
475
476	// Host USB devices are local, so remote is always FALSE
477	if (!aData.mRemote.isMatch (FALSE))
478	{
479	LogFlowMember (("Host::HostUSBDevice: remote not match FALSE\n"));
480	return false;
481	}
482
483	/// @todo (dmik): bird, I assumed isMatch() is called only for devices
484	// that are suitable for holding/capturing (also assuming that when the device
485	// is just attached it first goes to our filter driver, and only after applying
486	// filters goes back to the system when appropriate). So the below
487	// doesn't look too correct; moreover, currently there is no determinable
488	// "any match" state for intervalic filters, and it will be not so easy
489	// to determine this state for an arbitrary regexp expression...
490	// For now, I just check that the string filter is empty (which doesn't
491	// actually reflect all possible "any match" filters).
492	//
493	// bird: This method was called for any device some weeks back, and it most certainly
494	// should be called for 'busy' devices still. However, we do not want 'busy' devices
495	// to match empty filters (because that will for instance capture all USB keyboards & mice).
496	// You assumption about a filter driver is not correct on linux. We're racing with
497	// everyone else in the system there - see your problem with usbfs access.
498	//
499	// The customer requires a way of matching all devices which the host isn't using,
500	// if that is now difficult or the below method opens holes in the matching, this must
501	// be addresses immediately.
502
503	/*
504	* If all the criteria is empty, devices which are used by the host will not match.
505	*/
506	if ( m_pUsb->enmState == USBDEVICESTATE_USED_BY_HOST_CAPTURABLE
507	&& aData.mVendorId.string().isEmpty()
508	&& aData.mProductId.string().isEmpty()
509	&& aData.mRevision.string().isEmpty()
510	&& aData.mManufacturer.string().isEmpty()
511	&& aData.mProduct.string().isEmpty()
512	&& aData.mSerialNumber.string().isEmpty())
513	return false;
514
515	LogFlowMember (("HostUSBDevice::isMatch: returns true\n"));
516	return true;
517	}
518
519
520	/**
521	* Compares this device with a USBDEVICE and decides which comes first.
522	*
523	* @returns < 0 if this should come before pDev2.
524	* @returns 0 if this and pDev2 are equal.
525	* @returns > 0 if this should come after pDev2.
526	*
527	* @param pDev2 Device 2.
528	*/
529	int HostUSBDevice::compare (PCUSBDEVICE pDev2)
530	{
531	return compare (m_pUsb, pDev2);
532	}
533
534
535	/**
536	* Compares two USB devices and decides which comes first.
537	*
538	* @returns < 0 if pDev1 should come before pDev2.
539	* @returns 0 if pDev1 and pDev2 are equal.
540	* @returns > 0 if pDev1 should come after pDev2.
541	*
542	* @param pDev1 Device 1.
543	* @param pDev2 Device 2.
544	*/
545	/static/ int HostUSBDevice::compare (PCUSBDEVICE pDev1, PCUSBDEVICE pDev2)
546	{
547	int iDiff = pDev1->idVendor - pDev2->idVendor;
548	if (iDiff)
549	return iDiff;
550
551	iDiff = pDev1->idProduct - pDev2->idProduct;
552	if (iDiff)
553	return iDiff;
554
555	/** @todo Sander, will this work on windows as well? Linux won't reuse an address for quite a while. */
556	return strcmp(pDev1->pszAddress, pDev2->pszAddress);
557	}
558
559	/**
560	* Updates the state of the device.
561	*
562	* @returns true if the state has actually changed.
563	* @returns false if the stat didn't change, or the change might have been cause by VBox.
564	*
565	* @param aDev The current device state as seen by the proxy backend.
566	*/
567	bool HostUSBDevice::updateState (PCUSBDEVICE aDev)
568	{
569	AutoLock alock (this);
570
571	/*
572	* We have to be pretty conservative here because the proxy backend
573	* doesn't necessarily know everything that's going on. So, rather
574	* be overly careful than changing the state once when we shouldn't!
575	*/
576	switch (aDev->enmState)
577	{
578	default:
579	AssertMsgFailed (("aDev->enmState=%d\n", aDev->enmState));
580	case USBDEVICESTATE_UNSUPPORTED:
581	Assert (mState == USBDeviceState_USBDeviceNotSupported);
582	return false;
583
584	case USBDEVICESTATE_USED_BY_HOST:
585	switch (mState)
586	{
587	case USBDeviceState_USBDeviceUnavailable:
588	/* the proxy may confuse following states with unavailable */
589	case USBDeviceState_USBDeviceHeld:
590	case USBDeviceState_USBDeviceCaptured:
591	return false;
592	default:
593	LogFlowMember ((" HostUSBDevice::updateState: %d -> %d\n",
594	mState, USBDeviceState_USBDeviceUnavailable));
595	mState = USBDeviceState_USBDeviceUnavailable;
596	return true;
597	}
598	break;
599
600	case USBDEVICESTATE_USED_BY_HOST_CAPTURABLE:
601	switch (mState)
602	{
603	case USBDeviceState_USBDeviceBusy:
604	/* the proxy may confuse following states with capturable */
605	case USBDeviceState_USBDeviceHeld:
606	case USBDeviceState_USBDeviceCaptured:
607	return false;
608	default:
609	LogFlowMember ((" HostUSBDevice::updateState: %d -> %d\n",
610	mState, USBDeviceState_USBDeviceBusy));
611	mState = USBDeviceState_USBDeviceBusy;
612	return true;
613	}
614	break;
615
616	case USBDEVICESTATE_UNUSED:
617	switch (mState)
618	{
619	case USBDeviceState_USBDeviceAvailable:
620	/* the proxy may confuse following state(s) with available */
621	case USBDeviceState_USBDeviceHeld:
622	case USBDeviceState_USBDeviceCaptured:
623	return false;
624	default:
625	LogFlowMember ((" HostUSBDevice::updateState: %d -> %d\n",
626	mState, USBDeviceState_USBDeviceAvailable));
627	mState = USBDeviceState_USBDeviceAvailable;
628	return true;
629	}
630	break;
631
632	case USBDEVICESTATE_HELD_BY_PROXY:
633	switch (mState)
634	{
635	case USBDeviceState_USBDeviceHeld:
636	/* the proxy may confuse following state(s) with held */
637	case USBDeviceState_USBDeviceAvailable:
638	case USBDeviceState_USBDeviceBusy:
639	case USBDeviceState_USBDeviceCaptured:
640	return false;
641	default:
642	LogFlowMember ((" HostUSBDevice::updateState: %d -> %d\n",
643	mState, USBDeviceState_USBDeviceHeld));
644	mState = USBDeviceState_USBDeviceHeld;
645	return true;
646	}
647	break;
648
649	case USBDEVICESTATE_USED_BY_GUEST:
650	switch (mState)
651	{
652	case USBDeviceState_USBDeviceCaptured:
653	/* the proxy may confuse following state(s) with captured */
654	case USBDeviceState_USBDeviceHeld:
655	case USBDeviceState_USBDeviceAvailable:
656	case USBDeviceState_USBDeviceBusy:
657	return false;
658	default:
659	LogFlowMember ((" HostUSBDevice::updateState: %d -> %d\n",
660	mState, USBDeviceState_USBDeviceHeld));
661	mState = USBDeviceState_USBDeviceHeld;
662	return true;
663	}
664	break;
665	}
666	}
667

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source: vbox/trunk/src/VBox/Main/HostUSBDeviceImpl.cpp@ 895

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