HRESULT Guest::taskCopyFileFromGuest(GuestTask *aTask)
{
LogFlowFuncEnter();
AutoCaller autoCaller(this);
if (FAILED(autoCaller.rc())) return autoCaller.rc();
/*
* Do *not* take a write lock here since we don't (and won't)
* touch any class-specific data (of IGuest) here - only the member functions
* which get called here can do that.
*/
HRESULT rc = S_OK;
try
{
ComObjPtr<Guest> pGuest = aTask->pGuest;
/* Does our source file exist? */
BOOL fFileExists;
rc = pGuest->FileExists(Bstr(aTask->strSource).raw(),
Bstr(aTask->strUserName).raw(), Bstr(aTask->strPassword).raw(),
&fFileExists);
if (SUCCEEDED(rc))
{
if (!fFileExists)
rc = GuestTask::setProgressErrorInfo(VBOX_E_IPRT_ERROR, aTask->pProgress,
Guest::tr("Source file \"%s\" does not exist, or is not a file"),
aTask->strSource.c_str());
}
else
rc = GuestTask::setProgressErrorInfo(rc, aTask->pProgress, pGuest);
/* Query file size to make an estimate for our progress object. */
if (SUCCEEDED(rc))
{
LONG64 lFileSize;
rc = pGuest->FileQuerySize(Bstr(aTask->strSource).raw(),
Bstr(aTask->strUserName).raw(), Bstr(aTask->strPassword).raw(),
&lFileSize);
if (FAILED(rc))
rc = GuestTask::setProgressErrorInfo(rc, aTask->pProgress, pGuest);
com::SafeArray<IN_BSTR> args;
com::SafeArray<IN_BSTR> env;
if (SUCCEEDED(rc))
{
/*
* Prepare tool command line.
*/
char szSource[RTPATH_MAX];
if (RTStrPrintf(szSource, sizeof(szSource), "%s", aTask->strSource.c_str()) <= sizeof(szSource) - 1)
{
/*
* Normalize path slashes, based on the detected guest.
*/
Utf8Str osType = mData.mOSTypeId;
if ( osType.contains("Microsoft", Utf8Str::CaseInsensitive)
|| osType.contains("Windows", Utf8Str::CaseInsensitive))
{
/* We have a Windows guest. */
RTPathChangeToDosSlashes(szSource, true /* Force conversion. */);
}
else /* ... or something which isn't from Redmond ... */
{
RTPathChangeToUnixSlashes(szSource, true /* Force conversion. */);
}
args.push_back(Bstr(szSource).raw()); /* Tell our cat tool which file to output. */
}
else
rc = GuestTask::setProgressErrorInfo(VBOX_E_IPRT_ERROR, aTask->pProgress,
Guest::tr("Error preparing command line"));
}
ComPtr<IProgress> execProgress;
ULONG uPID;
if (SUCCEEDED(rc))
{
LogRel(("Copying file \"%s\" to host \"%s\" (%u bytes) ...\n",
aTask->strSource.c_str(), aTask->strDest.c_str(), lFileSize));
/*
* Okay, since we gathered all stuff we need until now to start the
* actual copying, start the guest part now.
*/
rc = pGuest->executeAndWaitForTool(Bstr(VBOXSERVICE_TOOL_CAT).raw(),
Bstr("Copying file to host").raw(),
ComSafeArrayAsInParam(args),
ComSafeArrayAsInParam(env),
Bstr(aTask->strUserName).raw(),
Bstr(aTask->strPassword).raw(),
ExecuteProcessFlag_WaitForProcessStartOnly
| ExecuteProcessFlag_WaitForStdOut,
NULL, NULL,
execProgress.asOutParam(), &uPID);
if (FAILED(rc))
rc = GuestTask::setProgressErrorInfo(rc, aTask->pProgress, pGuest);
}
if (SUCCEEDED(rc))
{
BOOL fCompleted = FALSE;
BOOL fCanceled = FALSE;
RTFILE hFileDest;
int vrc = RTFileOpen(&hFileDest, aTask->strDest.c_str(),
RTFILE_O_WRITE | RTFILE_O_OPEN_CREATE | RTFILE_O_DENY_WRITE);
if (RT_FAILURE(vrc))
rc = GuestTask::setProgressErrorInfo(VBOX_E_IPRT_ERROR, aTask->pProgress,
Guest::tr("Unable to create/open destination file \"%s\", rc=%Rrc"),
aTask->strDest.c_str(), vrc);
else
{
size_t cbToRead = lFileSize;
size_t cbTransfered = 0;
while ( SUCCEEDED(execProgress->COMGETTER(Completed(&fCompleted)))
&& !fCompleted)
{
SafeArray<BYTE> aOutputData;
rc = pGuest->GetProcessOutput(uPID, ProcessOutputFlag_None /* StdOut */,
0 /* No timeout. */,
_64K, ComSafeArrayAsOutParam(aOutputData));
if (SUCCEEDED(rc))
{
if (aOutputData.size())
{
vrc = RTFileWrite(hFileDest, aOutputData.raw(), aOutputData.size(), NULL /* No partial writes */);
if (RT_FAILURE(vrc))
{
rc = GuestTask::setProgressErrorInfo(VBOX_E_IPRT_ERROR, aTask->pProgress,
Guest::tr("Error writing to file \"%s\" (%u bytes left), rc=%Rrc"),
aTask->strSource.c_str(), cbToRead, vrc);
break;
}
Assert(cbToRead >= aOutputData.size());
cbToRead -= aOutputData.size();
cbTransfered += aOutputData.size();
aTask->pProgress->SetCurrentOperationProgress(cbTransfered / (lFileSize / 100.0));
}
/* Nothing read this time; try next round. */
}
else
{
rc = GuestTask::setProgressErrorInfo(rc, aTask->pProgress, pGuest);
break;
}
}
RTFileClose(hFileDest);
if (SUCCEEDED(rc))
{
if ( cbTransfered
&& (cbTransfered != lFileSize))
{
/*
* Only bitch about an unexpected end of a file when there already
* was data read from that file. If this was the very first read we can
* be (almost) sure that this file is not meant to be read by the specified user.
*/
rc = GuestTask::setProgressErrorInfo(VBOX_E_IPRT_ERROR, aTask->pProgress,
Guest::tr("Unexpected end of file \"%s\" (%u bytes total, %u bytes transferred)"),
aTask->strSource.c_str(), lFileSize, cbTransfered);
}
if (SUCCEEDED(rc))
aTask->pProgress->notifyComplete(S_OK);
}
}
}
}
}
catch (HRESULT aRC)
{
rc = aRC;
}
/* Clean up */
aTask->rc = rc;
LogFlowFunc(("rc=%Rhrc\n", rc));
LogFlowFuncLeave();
return VINF_SUCCESS;
}
