/* $Id: USBProxyService.cpp 55769 2015-05-08 20:01:46Z vboxsync $ */ /** @file * VirtualBox USB Proxy Service (base) class. */ /* * Copyright (C) 2006-2014 Oracle Corporation * * This file is part of VirtualBox Open Source Edition (OSE), as * available from http://www.virtualbox.org. This file is free software; * you can redistribute it and/or modify it under the terms of the GNU * General Public License (GPL) as published by the Free Software * Foundation, in version 2 as it comes in the "COPYING" file of the * VirtualBox OSE distribution. VirtualBox OSE is distributed in the * hope that it will be useful, but WITHOUT ANY WARRANTY of any kind. */ #include "USBProxyService.h" #include "HostUSBDeviceImpl.h" #include "HostImpl.h" #include "MachineImpl.h" #include "VirtualBoxImpl.h" #include "AutoCaller.h" #include "Logging.h" #include #include #include #include #include #include #include /** * Initialize data members. */ USBProxyService::USBProxyService(Host *aHost) : mHost(aHost), mThread(NIL_RTTHREAD), mTerminate(false), mLastError(VINF_SUCCESS), mDevices() { LogFlowThisFunc(("aHost=%p\n", aHost)); } /** * Stub needed as long as the class isn't virtual */ HRESULT USBProxyService::init(void) { return S_OK; } /** * Empty destructor. */ USBProxyService::~USBProxyService() { LogFlowThisFunc(("\n")); Assert(mThread == NIL_RTTHREAD); mDevices.clear(); mTerminate = true; mHost = NULL; } /** * Query if the service is active and working. * * @returns true if the service is up running. * @returns false if the service isn't running. */ bool USBProxyService::isActive(void) { return mThread != NIL_RTTHREAD; } /** * Get last error. * Can be used to check why the proxy !isActive() upon construction. * * @returns VBox status code. */ int USBProxyService::getLastError(void) { return mLastError; } /** * Get last error message. * Can be used to check why the proxy !isActive() upon construction as an * extension to getLastError(). May return a NULL error. * * @param * @returns VBox status code. */ HRESULT USBProxyService::getLastErrorMessage(BSTR *aError) { AssertPtrReturn(aError, E_POINTER); mLastErrorMessage.cloneTo(aError); return S_OK; } /** * We're using the Host object lock. * * This is just a temporary measure until all the USB refactoring is * done, probably... For now it help avoiding deadlocks we don't have * time to fix. * * @returns Lock handle. */ RWLockHandle *USBProxyService::lockHandle() const { return mHost->lockHandle(); } /** * Gets the collection of USB devices, slave of Host::USBDevices. * * This is an interface for the HostImpl::USBDevices property getter. * * * @param aUSBDevices Where to store the pointer to the collection. * * @returns COM status code. * * @remarks The caller must own the write lock of the host object. */ HRESULT USBProxyService::getDeviceCollection(std::vector > &aUSBDevices) { AssertReturn(isWriteLockOnCurrentThread(), E_FAIL); AutoWriteLock alock(this COMMA_LOCKVAL_SRC_POS); aUSBDevices.resize(mDevices.size()); size_t i = 0; for (HostUSBDeviceList::const_iterator it = mDevices.begin(); it != mDevices.end(); ++it, ++i) aUSBDevices[i] = *it; return S_OK; } /** * Request capture of a specific device. * * This is in an interface for SessionMachine::CaptureUSBDevice(), which is * an internal worker used by Console::AttachUSBDevice() from the VM process. * * When the request is completed, SessionMachine::onUSBDeviceAttach() will * be called for the given machine object. * * * @param aMachine The machine to attach the device to. * @param aId The UUID of the USB device to capture and attach. * * @returns COM status code and error info. * * @remarks This method may operate synchronously as well as asynchronously. In the * former case it will temporarily abandon locks because of IPC. */ HRESULT USBProxyService::captureDeviceForVM(SessionMachine *aMachine, IN_GUID aId, const com::Utf8Str &aCaptureFilename) { ComAssertRet(aMachine, E_INVALIDARG); AutoWriteLock alock(this COMMA_LOCKVAL_SRC_POS); /* * Translate the device id into a device object. */ ComObjPtr pHostDevice = findDeviceById(aId); if (pHostDevice.isNull()) return setError(E_INVALIDARG, tr("The USB device with UUID {%RTuuid} is not currently attached to the host"), Guid(aId).raw()); /* * Try to capture the device */ alock.release(); return pHostDevice->i_requestCaptureForVM(aMachine, true /* aSetError */, aCaptureFilename); } /** * Notification from VM process about USB device detaching progress. * * This is in an interface for SessionMachine::DetachUSBDevice(), which is * an internal worker used by Console::DetachUSBDevice() from the VM process. * * @param aMachine The machine which is sending the notification. * @param aId The UUID of the USB device is concerns. * @param aDone \a false for the pre-action notification (necessary * for advancing the device state to avoid confusing * the guest). * \a true for the post-action notification. The device * will be subjected to all filters except those of * of \a Machine. * * @returns COM status code. * * @remarks When \a aDone is \a true this method may end up doing IPC to other * VMs when running filters. In these cases it will temporarily * abandon its locks. */ HRESULT USBProxyService::detachDeviceFromVM(SessionMachine *aMachine, IN_GUID aId, bool aDone) { LogFlowThisFunc(("aMachine=%p{%s} aId={%RTuuid} aDone=%RTbool\n", aMachine, aMachine->i_getName().c_str(), Guid(aId).raw(), aDone)); // get a list of all running machines while we're outside the lock // (getOpenedMachines requests locks which are incompatible with the lock of the machines list) SessionMachinesList llOpenedMachines; mHost->i_parent()->i_getOpenedMachines(llOpenedMachines); AutoWriteLock alock(this COMMA_LOCKVAL_SRC_POS); ComObjPtr pHostDevice = findDeviceById(aId); ComAssertRet(!pHostDevice.isNull(), E_FAIL); AutoWriteLock devLock(pHostDevice COMMA_LOCKVAL_SRC_POS); /* * Work the state machine. */ LogFlowThisFunc(("id={%RTuuid} state=%s aDone=%RTbool name={%s}\n", pHostDevice->i_getId().raw(), pHostDevice->i_getStateName(), aDone, pHostDevice->i_getName().c_str())); bool fRunFilters = false; HRESULT hrc = pHostDevice->i_onDetachFromVM(aMachine, aDone, &fRunFilters); /* * Run filters if necessary. */ if ( SUCCEEDED(hrc) && fRunFilters) { Assert(aDone && pHostDevice->i_getUnistate() == kHostUSBDeviceState_HeldByProxy && pHostDevice->i_getMachine().isNull()); devLock.release(); alock.release(); HRESULT hrc2 = runAllFiltersOnDevice(pHostDevice, llOpenedMachines, aMachine); ComAssertComRC(hrc2); } return hrc; } /** * Apply filters for the machine to all eligible USB devices. * * This is in an interface for SessionMachine::CaptureUSBDevice(), which * is an internal worker used by Console::AutoCaptureUSBDevices() from the * VM process at VM startup. * * Matching devices will be attached to the VM and may result IPC back * to the VM process via SessionMachine::onUSBDeviceAttach() depending * on whether the device needs to be captured or not. If capture is * required, SessionMachine::onUSBDeviceAttach() will be called * asynchronously by the USB proxy service thread. * * @param aMachine The machine to capture devices for. * * @returns COM status code, perhaps with error info. * * @remarks Temporarily locks this object, the machine object and some USB * device, and the called methods will lock similar objects. */ HRESULT USBProxyService::autoCaptureDevicesForVM(SessionMachine *aMachine) { LogFlowThisFunc(("aMachine=%p{%s}\n", aMachine, aMachine->i_getName().c_str())); /* * Make a copy of the list because we cannot hold the lock protecting it. * (This will not make copies of any HostUSBDevice objects, only reference them.) */ AutoReadLock alock(this COMMA_LOCKVAL_SRC_POS); HostUSBDeviceList ListCopy = mDevices; alock.release(); for (HostUSBDeviceList::iterator it = ListCopy.begin(); it != ListCopy.end(); ++it) { ComObjPtr device = *it; AutoReadLock devLock(device COMMA_LOCKVAL_SRC_POS); if ( device->i_getUnistate() == kHostUSBDeviceState_HeldByProxy || device->i_getUnistate() == kHostUSBDeviceState_Unused || device->i_getUnistate() == kHostUSBDeviceState_Capturable) { devLock.release(); runMachineFilters(aMachine, device); } } return S_OK; } /** * Detach all USB devices currently attached to a VM. * * This is in an interface for SessionMachine::DetachAllUSBDevices(), which * is an internal worker used by Console::powerDown() from the VM process * at VM startup, and SessionMachine::uninit() at VM abend. * * This is, like #detachDeviceFromVM(), normally a two stage journey * where \a aDone indicates where we are. In addition we may be called * to clean up VMs that have abended, in which case there will be no * preparatory call. Filters will be applied to the devices in the final * call with the risk that we have to do some IPC when attaching them * to other VMs. * * @param aMachine The machine to detach devices from. * * @returns COM status code, perhaps with error info. * * @remarks Write locks the host object and may temporarily abandon * its locks to perform IPC. */ HRESULT USBProxyService::detachAllDevicesFromVM(SessionMachine *aMachine, bool aDone, bool aAbnormal) { // get a list of all running machines while we're outside the lock // (getOpenedMachines requests locks which are incompatible with the host object lock) SessionMachinesList llOpenedMachines; mHost->i_parent()->i_getOpenedMachines(llOpenedMachines); AutoWriteLock alock(this COMMA_LOCKVAL_SRC_POS); /* * Make a copy of the device list (not the HostUSBDevice objects, just * the list) since we may end up performing IPC and temporarily have * to abandon locks when applying filters. */ HostUSBDeviceList ListCopy = mDevices; for (HostUSBDeviceList::iterator it = ListCopy.begin(); it != ListCopy.end(); ++it) { ComObjPtr pHostDevice = *it; AutoWriteLock devLock(pHostDevice COMMA_LOCKVAL_SRC_POS); if (pHostDevice->i_getMachine() == aMachine) { /* * Same procedure as in detachUSBDevice(). */ bool fRunFilters = false; HRESULT hrc = pHostDevice->i_onDetachFromVM(aMachine, aDone, &fRunFilters, aAbnormal); if ( SUCCEEDED(hrc) && fRunFilters) { Assert( aDone && pHostDevice->i_getUnistate() == kHostUSBDeviceState_HeldByProxy && pHostDevice->i_getMachine().isNull()); devLock.release(); alock.release(); HRESULT hrc2 = runAllFiltersOnDevice(pHostDevice, llOpenedMachines, aMachine); ComAssertComRC(hrc2); alock.acquire(); } } } return S_OK; } /** * Runs all the filters on the specified device. * * All filters mean global and active VM, with the exception of those * belonging to \a aMachine. If a global ignore filter matched or if * none of the filters matched, the device will be released back to * the host. * * The device calling us here will be in the HeldByProxy, Unused, or * Capturable state. The caller is aware that locks held might have * to be abandond because of IPC and that the device might be in * almost any state upon return. * * * @returns COM status code (only parameter & state checks will fail). * @param aDevice The USB device to apply filters to. * @param aIgnoreMachine The machine to ignore filters from (we've just * detached the device from this machine). * * @note The caller is expected to own no locks. */ HRESULT USBProxyService::runAllFiltersOnDevice(ComObjPtr &aDevice, SessionMachinesList &llOpenedMachines, SessionMachine *aIgnoreMachine) { LogFlowThisFunc(("{%s} ignoring=%p\n", aDevice->i_getName().c_str(), aIgnoreMachine)); /* * Verify preconditions. */ AssertReturn(!isWriteLockOnCurrentThread(), E_FAIL); AssertReturn(!aDevice->isWriteLockOnCurrentThread(), E_FAIL); AutoWriteLock alock(this COMMA_LOCKVAL_SRC_POS); AutoWriteLock devLock(aDevice COMMA_LOCKVAL_SRC_POS); AssertMsgReturn(aDevice->i_isCapturableOrHeld(), ("{%s} %s\n", aDevice->i_getName().c_str(), aDevice->i_getStateName()), E_FAIL); /* * Get the lists we'll iterate. */ Host::USBDeviceFilterList globalFilters; mHost->i_getUSBFilters(&globalFilters); /* * Run global filters filters first. */ bool fHoldIt = false; for (Host::USBDeviceFilterList::const_iterator it = globalFilters.begin(); it != globalFilters.end(); ++it) { AutoWriteLock filterLock(*it COMMA_LOCKVAL_SRC_POS); const HostUSBDeviceFilter::Data &data = (*it)->i_getData(); if (aDevice->i_isMatch(data)) { USBDeviceFilterAction_T action = USBDeviceFilterAction_Null; (*it)->COMGETTER(Action)(&action); if (action == USBDeviceFilterAction_Ignore) { /* * Release the device to the host and we're done. */ filterLock.release(); devLock.release(); alock.release(); aDevice->i_requestReleaseToHost(); return S_OK; } if (action == USBDeviceFilterAction_Hold) { /* * A device held by the proxy needs to be subjected * to the machine filters. */ fHoldIt = true; break; } AssertMsgFailed(("action=%d\n", action)); } } globalFilters.clear(); /* * Run the per-machine filters. */ for (SessionMachinesList::const_iterator it = llOpenedMachines.begin(); it != llOpenedMachines.end(); ++it) { ComObjPtr pMachine = *it; /* Skip the machine the device was just detached from. */ if ( aIgnoreMachine && pMachine == aIgnoreMachine) continue; /* runMachineFilters takes care of checking the machine state. */ devLock.release(); alock.release(); if (runMachineFilters(pMachine, aDevice)) { LogFlowThisFunc(("{%s} attached to %p\n", aDevice->i_getName().c_str(), (void *)pMachine)); return S_OK; } alock.acquire(); devLock.acquire(); } /* * No matching machine, so request hold or release depending * on global filter match. */ devLock.release(); alock.release(); if (fHoldIt) aDevice->i_requestHold(); else aDevice->i_requestReleaseToHost(); return S_OK; } /** * Runs the USB filters of the machine on the device. * * If a match is found we will request capture for VM. This may cause * us to temporary abandon locks while doing IPC. * * @param aMachine Machine whose filters are to be run. * @param aDevice The USB device in question. * @returns @c true if the device has been or is being attached to the VM, @c false otherwise. * * @note Locks several objects temporarily for reading or writing. */ bool USBProxyService::runMachineFilters(SessionMachine *aMachine, ComObjPtr &aDevice) { LogFlowThisFunc(("{%s} aMachine=%p \n", aDevice->i_getName().c_str(), aMachine)); /* * Validate preconditions. */ AssertReturn(aMachine, false); AssertReturn(!isWriteLockOnCurrentThread(), false); AssertReturn(!aMachine->isWriteLockOnCurrentThread(), false); AssertReturn(!aDevice->isWriteLockOnCurrentThread(), false); /* Let HostUSBDevice::requestCaptureToVM() validate the state. */ /* * Do the job. */ ULONG ulMaskedIfs; if (aMachine->i_hasMatchingUSBFilter(aDevice, &ulMaskedIfs)) { /* try to capture the device */ HRESULT hrc = aDevice->i_requestCaptureForVM(aMachine, false /* aSetError */, Utf8Str(), ulMaskedIfs); return SUCCEEDED(hrc) || hrc == E_UNEXPECTED /* bad device state, give up */; } return false; } /** * A filter was inserted / loaded. * * @param aFilter Pointer to the inserted filter. * @return ID of the inserted filter */ void *USBProxyService::insertFilter(PCUSBFILTER aFilter) { // return non-NULL to fake success. NOREF(aFilter); return (void *)1; } /** * A filter was removed. * * @param aId ID of the filter to remove */ void USBProxyService::removeFilter(void *aId) { NOREF(aId); } /** * A VM is trying to capture a device, do necessary preparations. * * @returns VBox status code. * @param aDevice The device in question. */ int USBProxyService::captureDevice(HostUSBDevice *aDevice) { NOREF(aDevice); return VERR_NOT_IMPLEMENTED; } /** * Notification that an async captureDevice() operation completed. * * This is used by the proxy to release temporary filters. * * @returns VBox status code. * @param aDevice The device in question. * @param aSuccess Whether it succeeded or failed. */ void USBProxyService::captureDeviceCompleted(HostUSBDevice *aDevice, bool aSuccess) { NOREF(aDevice); NOREF(aSuccess); } /** * The device is going to be detached from a VM. * * @param aDevice The device in question. * * @todo unused */ void USBProxyService::detachingDevice(HostUSBDevice *aDevice) { NOREF(aDevice); } /** * A VM is releasing a device back to the host. * * @returns VBox status code. * @param aDevice The device in question. */ int USBProxyService::releaseDevice(HostUSBDevice *aDevice) { NOREF(aDevice); return VERR_NOT_IMPLEMENTED; } /** * Notification that an async releaseDevice() operation completed. * * This is used by the proxy to release temporary filters. * * @returns VBox status code. * @param aDevice The device in question. * @param aSuccess Whether it succeeded or failed. */ void USBProxyService::releaseDeviceCompleted(HostUSBDevice *aDevice, bool aSuccess) { NOREF(aDevice); NOREF(aSuccess); } // Internals ///////////////////////////////////////////////////////////////////////////// /** * Starts the service. * * @returns VBox status. */ int USBProxyService::start(void) { int rc = VINF_SUCCESS; if (mThread == NIL_RTTHREAD) { /* * Force update before starting the poller thread. */ rc = wait(0); if (rc == VERR_TIMEOUT || rc == VERR_INTERRUPTED || RT_SUCCESS(rc)) { processChanges(); /* * Create the poller thread which will look for changes. */ mTerminate = false; rc = RTThreadCreate(&mThread, USBProxyService::serviceThread, this, 0, RTTHREADTYPE_INFREQUENT_POLLER, RTTHREADFLAGS_WAITABLE, "USBPROXY"); AssertRC(rc); if (RT_SUCCESS(rc)) LogFlowThisFunc(("started mThread=%RTthrd\n", mThread)); else mThread = NIL_RTTHREAD; } mLastError = rc; } else LogFlowThisFunc(("already running, mThread=%RTthrd\n", mThread)); return rc; } /** * Stops the service. * * @returns VBox status. */ int USBProxyService::stop(void) { int rc = VINF_SUCCESS; if (mThread != NIL_RTTHREAD) { /* * Mark the thread for termination and kick it. */ ASMAtomicXchgSize(&mTerminate, true); rc = interruptWait(); AssertRC(rc); /* * Wait for the thread to finish and then update the state. */ rc = RTThreadWait(mThread, 60000, NULL); if (rc == VERR_INVALID_HANDLE) rc = VINF_SUCCESS; if (RT_SUCCESS(rc)) { LogFlowThisFunc(("stopped mThread=%RTthrd\n", mThread)); mThread = NIL_RTTHREAD; mTerminate = false; } else { AssertRC(rc); mLastError = rc; } } else LogFlowThisFunc(("not active\n")); return rc; } /** * The service thread created by start(). * * @param Thread The thread handle. * @param pvUser Pointer to the USBProxyService instance. */ /*static*/ DECLCALLBACK(int) USBProxyService::serviceThread(RTTHREAD /* Thread */, void *pvUser) { USBProxyService *pThis = (USBProxyService *)pvUser; LogFlowFunc(("pThis=%p\n", pThis)); pThis->serviceThreadInit(); int rc = VINF_SUCCESS; /* * Processing loop. */ for (;;) { rc = pThis->wait(RT_INDEFINITE_WAIT); if (RT_FAILURE(rc) && rc != VERR_INTERRUPTED && rc != VERR_TIMEOUT) break; if (pThis->mTerminate) break; pThis->processChanges(); } pThis->serviceThreadTerm(); LogFlowFunc(("returns %Rrc\n", rc)); return rc; } /** * First call made on the service thread, use it to do * thread initialization. * * The default implementation in USBProxyService just a dummy stub. */ void USBProxyService::serviceThreadInit(void) { } /** * Last call made on the service thread, use it to do * thread termination. */ void USBProxyService::serviceThreadTerm(void) { } /** * Wait for a change in the USB devices attached to the host. * * The default implementation in USBProxyService just a dummy stub. * * @returns VBox status code. VERR_INTERRUPTED and VERR_TIMEOUT are considered * harmless, while all other error status are fatal. * @param aMillies Number of milliseconds to wait. */ int USBProxyService::wait(RTMSINTERVAL aMillies) { return RTThreadSleep(RT_MIN(aMillies, 250)); } /** * Interrupt any wait() call in progress. * * The default implementation in USBProxyService just a dummy stub. * * @returns VBox status. */ int USBProxyService::interruptWait(void) { return VERR_NOT_IMPLEMENTED; } /** * Sort a list of USB devices. * * @returns Pointer to the head of the sorted doubly linked list. * @param aDevices Head pointer (can be both singly and doubly linked list). */ static PUSBDEVICE sortDevices(PUSBDEVICE pDevices) { PUSBDEVICE pHead = NULL; PUSBDEVICE pTail = NULL; while (pDevices) { /* unlink head */ PUSBDEVICE pDev = pDevices; pDevices = pDev->pNext; if (pDevices) pDevices->pPrev = NULL; /* find location. */ PUSBDEVICE pCur = pTail; while ( pCur && HostUSBDevice::i_compare(pCur, pDev) > 0) pCur = pCur->pPrev; /* insert (after pCur) */ pDev->pPrev = pCur; if (pCur) { pDev->pNext = pCur->pNext; pCur->pNext = pDev; if (pDev->pNext) pDev->pNext->pPrev = pDev; else pTail = pDev; } else { pDev->pNext = pHead; if (pHead) pHead->pPrev = pDev; else pTail = pDev; pHead = pDev; } } LogFlowFuncLeave(); return pHead; } /** * Process any relevant changes in the attached USB devices. * * Except for the first call, this is always running on the service thread. */ void USBProxyService::processChanges(void) { LogFlowThisFunc(("\n")); /* * Get the sorted list of USB devices. */ PUSBDEVICE pDevices = getDevices(); pDevices = sortDevices(pDevices); // get a list of all running machines while we're outside the lock // (getOpenedMachines requests higher priority locks) SessionMachinesList llOpenedMachines; mHost->i_parent()->i_getOpenedMachines(llOpenedMachines); AutoWriteLock alock(this COMMA_LOCKVAL_SRC_POS); /* * Compare previous list with the new list of devices * and merge in any changes while notifying Host. */ HostUSBDeviceList::iterator it = this->mDevices.begin(); while ( it != mDevices.end() || pDevices) { ComObjPtr pHostDevice; if (it != mDevices.end()) pHostDevice = *it; /* * Assert that the object is still alive (we still reference it in * the collection and we're the only one who calls uninit() on it. */ AutoCaller devCaller(pHostDevice.isNull() ? NULL : pHostDevice); AssertComRC(devCaller.rc()); /* * Lock the device object since we will read/write its * properties. All Host callbacks also imply the object is locked. */ AutoWriteLock devLock(pHostDevice.isNull() ? NULL : pHostDevice COMMA_LOCKVAL_SRC_POS); /* * Compare. */ int iDiff; if (pHostDevice.isNull()) iDiff = 1; else { if (!pDevices) iDiff = -1; else iDiff = pHostDevice->i_compare(pDevices); } if (!iDiff) { /* * The device still there, update the state and move on. The PUSBDEVICE * structure is eaten by updateDeviceState / HostUSBDevice::updateState(). */ PUSBDEVICE pCur = pDevices; pDevices = pDevices->pNext; pCur->pPrev = pCur->pNext = NULL; bool fRunFilters = false; SessionMachine *pIgnoreMachine = NULL; devLock.release(); alock.release(); if (updateDeviceState(pHostDevice, pCur, &fRunFilters, &pIgnoreMachine)) deviceChanged(pHostDevice, (fRunFilters ? &llOpenedMachines : NULL), pIgnoreMachine); alock.acquire(); ++it; } else { if (iDiff > 0) { /* * Head of pDevices was attached. */ PUSBDEVICE pNew = pDevices; pDevices = pDevices->pNext; pNew->pPrev = pNew->pNext = NULL; ComObjPtr NewObj; NewObj.createObject(); NewObj->init(pNew, this); Log(("USBProxyService::processChanges: attached %p {%s} %s / %p:{.idVendor=%#06x, .idProduct=%#06x, .pszProduct=\"%s\", .pszManufacturer=\"%s\"}\n", (HostUSBDevice *)NewObj, NewObj->i_getName().c_str(), NewObj->i_getStateName(), pNew, pNew->idVendor, pNew->idProduct, pNew->pszProduct, pNew->pszManufacturer)); mDevices.insert(it, NewObj); devLock.release(); alock.release(); deviceAdded(NewObj, llOpenedMachines, pNew); alock.acquire(); } else { /* * Check if the device was actually detached or logically detached * as the result of a re-enumeration. */ if (!pHostDevice->i_wasActuallyDetached()) ++it; else { it = mDevices.erase(it); devLock.release(); alock.release(); deviceRemoved(pHostDevice); Log(("USBProxyService::processChanges: detached %p {%s}\n", (HostUSBDevice *)pHostDevice, pHostDevice->i_getName().c_str())); /* from now on, the object is no more valid, * uninitialize to avoid abuse */ devCaller.release(); pHostDevice->uninit(); alock.acquire(); } } } } /* while */ LogFlowThisFunc(("returns void\n")); } /** * Get a list of USB device currently attached to the host. * * The default implementation in USBProxyService just a dummy stub. * * @returns Pointer to a list of USB devices. * The list nodes are freed individually by calling freeDevice(). */ PUSBDEVICE USBProxyService::getDevices(void) { return NULL; } /** * Performs the required actions when a device has been added. * * This means things like running filters and subsequent capturing and * VM attaching. This may result in IPC and temporary lock abandonment. * * @param aDevice The device in question. * @param aUSBDevice The USB device structure. */ void USBProxyService::deviceAdded(ComObjPtr &aDevice, SessionMachinesList &llOpenedMachines, PUSBDEVICE aUSBDevice) { /* * Validate preconditions. */ AssertReturnVoid(!isWriteLockOnCurrentThread()); AssertReturnVoid(!aDevice->isWriteLockOnCurrentThread()); AutoReadLock devLock(aDevice COMMA_LOCKVAL_SRC_POS); LogFlowThisFunc(("aDevice=%p name={%s} state=%s id={%RTuuid}\n", (HostUSBDevice *)aDevice, aDevice->i_getName().c_str(), aDevice->i_getStateName(), aDevice->i_getId().raw())); /* * Run filters on the device. */ if (aDevice->i_isCapturableOrHeld()) { devLock.release(); HRESULT rc = runAllFiltersOnDevice(aDevice, llOpenedMachines, NULL /* aIgnoreMachine */); AssertComRC(rc); } NOREF(aUSBDevice); } /** * Remove device notification hook for the OS specific code. * * This is means things like * * @param aDevice The device in question. */ void USBProxyService::deviceRemoved(ComObjPtr &aDevice) { /* * Validate preconditions. */ AssertReturnVoid(!isWriteLockOnCurrentThread()); AssertReturnVoid(!aDevice->isWriteLockOnCurrentThread()); AutoWriteLock devLock(aDevice COMMA_LOCKVAL_SRC_POS); LogFlowThisFunc(("aDevice=%p name={%s} state=%s id={%RTuuid}\n", (HostUSBDevice *)aDevice, aDevice->i_getName().c_str(), aDevice->i_getStateName(), aDevice->i_getId().raw())); /* * Detach the device from any machine currently using it, * reset all data and uninitialize the device object. */ devLock.release(); aDevice->i_onPhysicalDetached(); } /** * Implement fake capture, ++. * * @returns true if there is a state change. * @param pDevice The device in question. * @param pUSBDevice The USB device structure for the last enumeration. * @param aRunFilters Whether or not to run filters. */ bool USBProxyService::updateDeviceStateFake(HostUSBDevice *aDevice, PUSBDEVICE aUSBDevice, bool *aRunFilters, SessionMachine **aIgnoreMachine) { *aRunFilters = false; *aIgnoreMachine = NULL; AssertReturn(aDevice, false); AssertReturn(!aDevice->isWriteLockOnCurrentThread(), false); /* * Just hand it to the device, it knows best what needs to be done. */ return aDevice->i_updateStateFake(aUSBDevice, aRunFilters, aIgnoreMachine); } /** * Updates the device state. * * This is responsible for calling HostUSBDevice::updateState(). * * @returns true if there is a state change. * @param aDevice The device in question. * @param aUSBDevice The USB device structure for the last enumeration. * @param aRunFilters Whether or not to run filters. * @param aIgnoreMachine Machine to ignore when running filters. */ bool USBProxyService::updateDeviceState(HostUSBDevice *aDevice, PUSBDEVICE aUSBDevice, bool *aRunFilters, SessionMachine **aIgnoreMachine) { AssertReturn(aDevice, false); AssertReturn(!aDevice->isWriteLockOnCurrentThread(), false); return aDevice->i_updateState(aUSBDevice, aRunFilters, aIgnoreMachine); } /** * Handle a device which state changed in some significant way. * * This means things like running filters and subsequent capturing and * VM attaching. This may result in IPC and temporary lock abandonment. * * @param aDevice The device. * @param pllOpenedMachines list of running session machines (VirtualBox::getOpenedMachines()); if NULL, we don't run filters * @param aIgnoreMachine Machine to ignore when running filters. */ void USBProxyService::deviceChanged(ComObjPtr &aDevice, SessionMachinesList *pllOpenedMachines, SessionMachine *aIgnoreMachine) { /* * Validate preconditions. */ AssertReturnVoid(!isWriteLockOnCurrentThread()); AssertReturnVoid(!aDevice->isWriteLockOnCurrentThread()); AutoReadLock devLock(aDevice COMMA_LOCKVAL_SRC_POS); LogFlowThisFunc(("aDevice=%p name={%s} state=%s id={%RTuuid} aRunFilters=%RTbool aIgnoreMachine=%p\n", (HostUSBDevice *)aDevice, aDevice->i_getName().c_str(), aDevice->i_getStateName(), aDevice->i_getId().raw(), (pllOpenedMachines != NULL), // used to be "bool aRunFilters" aIgnoreMachine)); devLock.release(); /* * Run filters if requested to do so. */ if (pllOpenedMachines) { HRESULT rc = runAllFiltersOnDevice(aDevice, *pllOpenedMachines, aIgnoreMachine); AssertComRC(rc); } } /** * Free all the members of a USB device returned by getDevice(). * * @param pDevice Pointer to the device. */ /*static*/ void USBProxyService::freeDeviceMembers(PUSBDEVICE pDevice) { RTStrFree((char *)pDevice->pszManufacturer); pDevice->pszManufacturer = NULL; RTStrFree((char *)pDevice->pszProduct); pDevice->pszProduct = NULL; RTStrFree((char *)pDevice->pszSerialNumber); pDevice->pszSerialNumber = NULL; RTStrFree((char *)pDevice->pszAddress); pDevice->pszAddress = NULL; #ifdef RT_OS_WINDOWS RTStrFree(pDevice->pszAltAddress); pDevice->pszAltAddress = NULL; RTStrFree(pDevice->pszHubName); pDevice->pszHubName = NULL; #elif defined(RT_OS_SOLARIS) RTStrFree(pDevice->pszDevicePath); pDevice->pszDevicePath = NULL; #endif } /** * Free one USB device returned by getDevice(). * * @param pDevice Pointer to the device. */ /*static*/ void USBProxyService::freeDevice(PUSBDEVICE pDevice) { freeDeviceMembers(pDevice); RTMemFree(pDevice); } /** * Initializes a filter with the data from the specified device. * * @param aFilter The filter to fill. * @param aDevice The device to fill it with. */ /*static*/ void USBProxyService::initFilterFromDevice(PUSBFILTER aFilter, HostUSBDevice *aDevice) { PCUSBDEVICE pDev = aDevice->mUsb; int vrc; vrc = USBFilterSetNumExact(aFilter, USBFILTERIDX_VENDOR_ID, pDev->idVendor, true); AssertRC(vrc); vrc = USBFilterSetNumExact(aFilter, USBFILTERIDX_PRODUCT_ID, pDev->idProduct, true); AssertRC(vrc); vrc = USBFilterSetNumExact(aFilter, USBFILTERIDX_DEVICE_REV, pDev->bcdDevice, true); AssertRC(vrc); vrc = USBFilterSetNumExact(aFilter, USBFILTERIDX_DEVICE_CLASS, pDev->bDeviceClass, true); AssertRC(vrc); vrc = USBFilterSetNumExact(aFilter, USBFILTERIDX_DEVICE_SUB_CLASS, pDev->bDeviceSubClass, true); AssertRC(vrc); vrc = USBFilterSetNumExact(aFilter, USBFILTERIDX_DEVICE_PROTOCOL, pDev->bDeviceProtocol, true); AssertRC(vrc); vrc = USBFilterSetNumExact(aFilter, USBFILTERIDX_PORT, pDev->bPort, true); AssertRC(vrc); vrc = USBFilterSetNumExact(aFilter, USBFILTERIDX_BUS, pDev->bBus, true); AssertRC(vrc); if (pDev->pszSerialNumber) { vrc = USBFilterSetStringExact(aFilter, USBFILTERIDX_SERIAL_NUMBER_STR, pDev->pszSerialNumber, true); AssertRC(vrc); } if (pDev->pszProduct) { vrc = USBFilterSetStringExact(aFilter, USBFILTERIDX_PRODUCT_STR, pDev->pszProduct, true); AssertRC(vrc); } if (pDev->pszManufacturer) { vrc = USBFilterSetStringExact(aFilter, USBFILTERIDX_MANUFACTURER_STR, pDev->pszManufacturer, true); AssertRC(vrc); } } /** * Searches the list of devices (mDevices) for the given device. * * * @returns Smart pointer to the device on success, NULL otherwise. * @param aId The UUID of the device we're looking for. */ ComObjPtr USBProxyService::findDeviceById(IN_GUID aId) { Guid Id(aId); ComObjPtr Dev; for (HostUSBDeviceList::iterator it = mDevices.begin(); it != mDevices.end(); ++it) if ((*it)->i_getId() == Id) { Dev = (*it); break; } return Dev; } /*static*/ HRESULT USBProxyService::setError(HRESULT aResultCode, const char *aText, ...) { va_list va; va_start(va, aText); HRESULT rc = VirtualBoxBase::setErrorInternal(aResultCode, COM_IIDOF(IHost), "USBProxyService", Utf8StrFmt(aText, va), false /* aWarning*/, true /* aLogIt*/); va_end(va); return rc; } /* vi: set tabstop=4 shiftwidth=4 expandtab: */