STDMETHODIMP GuestDirectory::Read(IFsObjInfo **aInfo)
{
#ifndef VBOX_WITH_GUEST_CONTROL
ReturnComNotImplemented();
#else
LogFlowThisFuncEnter();
AutoCaller autoCaller(this);
if (FAILED(autoCaller.rc())) return autoCaller.rc();
ComObjPtr<GuestProcess> pProcess = mData.mProcess;
Assert(!pProcess.isNull());
GuestProcessStreamBlock streamBlock;
GuestFsObjData objData;
int rc = parseData(streamBlock);
if ( RT_FAILURE(rc)
|| streamBlock.IsEmpty()) /* More data needed. */
{
rc = pProcess->waitForStart(30 * 1000 /* 30s timeout */);
}
if (RT_SUCCESS(rc))
{
BYTE byBuf[_64K];
size_t cbRead = 0;
/** @todo Merge with GuestSession::queryFileInfoInternal. */
for (;RT_SUCCESS(rc);)
{
GuestProcessWaitResult waitRes;
rc = pProcess->waitFor( ProcessWaitForFlag_Terminate
| ProcessWaitForFlag_StdOut,
30 * 1000 /* Timeout */, waitRes);
if ( RT_FAILURE(rc)
|| waitRes.mResult == ProcessWaitResult_Terminate
|| waitRes.mResult == ProcessWaitResult_Error
|| waitRes.mResult == ProcessWaitResult_Timeout)
{
if (RT_FAILURE(waitRes.mRC))
rc = waitRes.mRC;
break;
}
rc = pProcess->readData(OUTPUT_HANDLE_ID_STDOUT, sizeof(byBuf),
30 * 1000 /* Timeout */, byBuf, sizeof(byBuf),
&cbRead);
if (RT_FAILURE(rc))
break;
if (cbRead)
{
AutoWriteLock alock(this COMMA_LOCKVAL_SRC_POS);
rc = mData.mStream.AddData(byBuf, cbRead);
if (RT_FAILURE(rc))
break;
LogFlowThisFunc(("rc=%Rrc, cbRead=%RU64, cbStreamOut=%RU32\n",
rc, cbRead, mData.mStream.GetSize()));
rc = parseData(streamBlock);
if (RT_SUCCESS(rc))
{
/* Parsing the current stream block succeeded so
* we don't need more at the moment. */
break;
}
}
}
LogFlowThisFunc(("Reading done with rc=%Rrc, cbRead=%RU64, cbStream=%RU32\n",
rc, cbRead, mData.mStream.GetSize()));
if (RT_SUCCESS(rc))
{
rc = parseData(streamBlock);
if (rc == VERR_NO_DATA) /* Since this is the last parsing call, this is ok. */
rc = VINF_SUCCESS;
}
/*
* Note: The guest process can still be around to serve the next
* upcoming stream block next time.
*/
if (RT_SUCCESS(rc))
{
/** @todo Move into common function. */
ProcessStatus_T procStatus = ProcessStatus_Undefined;
LONG exitCode = 0;
HRESULT hr2 = pProcess->COMGETTER(Status(&procStatus));
ComAssertComRC(hr2);
hr2 = pProcess->COMGETTER(ExitCode(&exitCode));
ComAssertComRC(hr2);
if ( ( procStatus != ProcessStatus_Started
&& procStatus != ProcessStatus_Paused
&& procStatus != ProcessStatus_Terminating
)
&& exitCode != 0)
{
rc = VERR_ACCESS_DENIED;
}
}
}
if (RT_SUCCESS(rc))
{
if (streamBlock.GetCount()) /* Did we get content? */
{
rc = objData.FromLs(streamBlock);
if (RT_FAILURE(rc))
rc = VERR_PATH_NOT_FOUND;
if (RT_SUCCESS(rc))
{
/* Create the object. */
ComObjPtr<GuestFsObjInfo> pFsObjInfo;
HRESULT hr2 = pFsObjInfo.createObject();
if (FAILED(hr2))
rc = VERR_COM_UNEXPECTED;
if (RT_SUCCESS(rc))
rc = pFsObjInfo->init(objData);
if (RT_SUCCESS(rc))
{
/* Return info object to the caller. */
hr2 = pFsObjInfo.queryInterfaceTo(aInfo);
if (FAILED(hr2))
rc = VERR_COM_UNEXPECTED;
}
}
}
else
{
/* Nothing to read anymore. Tell the caller. */
rc = VERR_NO_MORE_FILES;
}
}
HRESULT hr = S_OK;
if (RT_FAILURE(rc)) /** @todo Add more errors here. */
{
switch (rc)
{
case VERR_ACCESS_DENIED:
hr = setError(VBOX_E_IPRT_ERROR, tr("Reading directory \"%s\" failed: Unable to read / access denied"),
mData.mName.c_str());
break;
case VERR_PATH_NOT_FOUND:
hr = setError(VBOX_E_IPRT_ERROR, tr("Reading directory \"%s\" failed: Path not found"),
mData.mName.c_str());
break;
case VERR_NO_MORE_FILES:
hr = setError(VBOX_E_OBJECT_NOT_FOUND, tr("No more entries for directory \"%s\""),
mData.mName.c_str());
break;
default:
hr = setError(VBOX_E_IPRT_ERROR, tr("Error while reading directory \"%s\": %Rrc\n"),
mData.mName.c_str(), rc);
break;
}
}
LogFlowFuncLeaveRC(rc);
return hr;
#endif /* VBOX_WITH_GUEST_CONTROL */
}
int SessionTaskCopyFrom::Run(void)
{
LogFlowThisFuncEnter();
ComObjPtr<GuestSession> pSession = mSession;
Assert(!pSession.isNull());
AutoCaller autoCaller(pSession);
if (FAILED(autoCaller.rc())) return autoCaller.rc();
/*
* Note: There will be races between querying file size + reading the guest file's
* content because we currently *do not* lock down the guest file when doing the
* actual operations.
** @todo Implement guest file locking!
*/
GuestFsObjData objData;
int rc = pSession->fileQueryInfoInternal(Utf8Str(mSource), objData);
if (RT_FAILURE(rc))
{
setProgressErrorMsg(VBOX_E_IPRT_ERROR,
Utf8StrFmt(GuestSession::tr("Querying guest file information for \"%s\" failed: %Rrc"),
mSource.c_str(), rc));
}
else if (objData.mType != FsObjType_File) /* Only single files are supported at the moment. */
{
rc = setProgressErrorMsg(VBOX_E_IPRT_ERROR,
Utf8StrFmt(GuestSession::tr("Object \"%s\" on the guest is not a file"), mSource.c_str()));
}
if (RT_SUCCESS(rc))
{
RTFILE fileDest;
rc = RTFileOpen(&fileDest, mDest.c_str(),
RTFILE_O_WRITE | RTFILE_O_OPEN_CREATE | RTFILE_O_DENY_WRITE); /** @todo Use the correct open modes! */
if (RT_FAILURE(rc))
{
setProgressErrorMsg(VBOX_E_IPRT_ERROR,
Utf8StrFmt(GuestSession::tr("Error opening destination file \"%s\": %Rrc"),
mDest.c_str(), rc));
}
else
{
GuestProcessStartupInfo procInfo;
procInfo.mName = Utf8StrFmt(GuestSession::tr("Copying file \"%s\" from guest to the host to \"%s\" (%RI64 bytes)"),
mSource.c_str(), mDest.c_str(), objData.mObjectSize);
procInfo.mCommand = Utf8Str(VBOXSERVICE_TOOL_CAT);
procInfo.mFlags = ProcessCreateFlag_Hidden | ProcessCreateFlag_WaitForStdOut;
/* Set arguments.*/
procInfo.mArguments.push_back(mSource); /* Which file to output? */
/* Startup process. */
ComObjPtr<GuestProcess> pProcess;
rc = pSession->processCreateExInteral(procInfo, pProcess);
if (RT_SUCCESS(rc))
rc = pProcess->startProcess();
if (RT_FAILURE(rc))
{
setProgressErrorMsg(VBOX_E_IPRT_ERROR,
Utf8StrFmt(GuestSession::tr("Unable to start guest process for copying data from guest to host: %Rrc"), rc));
}
else
{
GuestProcessWaitResult waitRes;
BYTE byBuf[_64K];
BOOL fCanceled = FALSE;
uint64_t cbWrittenTotal = 0;
uint64_t cbToRead = objData.mObjectSize;
for (;;)
{
rc = pProcess->waitFor(ProcessWaitForFlag_StdOut,
30 * 1000 /* Timeout */, waitRes);
if ( waitRes.mResult == ProcessWaitResult_StdOut
|| waitRes.mResult == ProcessWaitResult_WaitFlagNotSupported)
{
/* If the guest does not support waiting for stdin, we now yield in
* order to reduce the CPU load due to busy waiting. */
if (waitRes.mResult == ProcessWaitResult_WaitFlagNotSupported)
RTThreadYield(); /* Optional, don't check rc. */
size_t cbRead;
rc = pProcess->readData(OUTPUT_HANDLE_ID_STDOUT, sizeof(byBuf),
30 * 1000 /* Timeout */, byBuf, sizeof(byBuf),
&cbRead);
if (RT_FAILURE(rc))
{
setProgressErrorMsg(VBOX_E_IPRT_ERROR,
Utf8StrFmt(GuestSession::tr("Reading from file \"%s\" (offset %RU64) failed: %Rrc"),
mSource.c_str(), cbWrittenTotal, rc));
break;
}
if (cbRead)
{
rc = RTFileWrite(fileDest, byBuf, cbRead, NULL /* No partial writes */);
if (RT_FAILURE(rc))
{
setProgressErrorMsg(VBOX_E_IPRT_ERROR,
Utf8StrFmt(GuestSession::tr("Error writing to file \"%s\" (%RU64 bytes left): %Rrc"),
mDest.c_str(), cbToRead, rc));
break;
}
/* Only subtract bytes reported written by the guest. */
Assert(cbToRead >= cbRead);
cbToRead -= cbRead;
/* Update total bytes written to the guest. */
cbWrittenTotal += cbRead;
Assert(cbWrittenTotal <= (uint64_t)objData.mObjectSize);
/* Did the user cancel the operation above? */
if ( SUCCEEDED(mProgress->COMGETTER(Canceled(&fCanceled)))
&& fCanceled)
break;
rc = setProgress((ULONG)(cbWrittenTotal / ((uint64_t)objData.mObjectSize / 100.0)));
if (RT_FAILURE(rc))
break;
}
}
else if ( RT_FAILURE(rc)
|| waitRes.mResult == ProcessWaitResult_Terminate
|| waitRes.mResult == ProcessWaitResult_Error
|| waitRes.mResult == ProcessWaitResult_Timeout)
{
if (RT_FAILURE(waitRes.mRC))
rc = waitRes.mRC;
break;
}
} /* for */
LogFlowThisFunc(("rc=%Rrc, cbWrittenTotal=%RU64, cbSize=%RI64, cbToRead=%RU64\n",
rc, cbWrittenTotal, objData.mObjectSize, cbToRead));
if ( !fCanceled
|| RT_SUCCESS(rc))
{
/*
* Even if we succeeded until here make sure to check whether we really transfered
* everything.
*/
if ( objData.mObjectSize > 0
&& cbWrittenTotal == 0)
{
/* If nothing was transfered but the file size was > 0 then "vbox_cat" wasn't able to write
* to the destination -> access denied. */
setProgressErrorMsg(VBOX_E_IPRT_ERROR,
Utf8StrFmt(GuestSession::tr("Access denied when copying file \"%s\" to \"%s\""),
mSource.c_str(), mDest.c_str()));
rc = VERR_GENERAL_FAILURE; /* Fudge. */
}
else if (cbWrittenTotal < (uint64_t)objData.mObjectSize)
{
/* If we did not copy all let the user know. */
setProgressErrorMsg(VBOX_E_IPRT_ERROR,
Utf8StrFmt(GuestSession::tr("Copying file \"%s\" failed (%RU64/%RI64 bytes transfered)"),
mSource.c_str(), cbWrittenTotal, objData.mObjectSize));
rc = VERR_GENERAL_FAILURE; /* Fudge. */
}
else
{
ProcessStatus_T procStatus;
LONG exitCode;
if ( ( SUCCEEDED(pProcess->COMGETTER(Status(&procStatus)))
&& procStatus != ProcessStatus_TerminatedNormally)
|| ( SUCCEEDED(pProcess->COMGETTER(ExitCode(&exitCode)))
&& exitCode != 0)
)
{
setProgressErrorMsg(VBOX_E_IPRT_ERROR,
Utf8StrFmt(GuestSession::tr("Copying file \"%s\" failed with status %ld, exit code %d"),
mSource.c_str(), procStatus, exitCode)); /**@todo Add stringify methods! */
rc = VERR_GENERAL_FAILURE; /* Fudge. */
}
else /* Yay, success! */
rc = setProgressSuccess();
}
}
if (!pProcess.isNull())
pProcess->uninit();
}
RTFileClose(fileDest);
}
}
LogFlowFuncLeaveRC(rc);
return rc;
}
