/**
* 发送本机共享文件信息入口.
* @param pal class PalInfo
*/
void SendFile::SendSharedInfoEntry(PalInfo *pal)
{
GSList *list;
pthread_mutex_lock(cthrd.GetMutex());
list = cthrd.GetPublicFileList();
SendFileInfo(pal, IPTUX_SHAREDOPT, list);
pthread_mutex_unlock(cthrd.GetMutex());
}
// Performs the actual file transfer.
// This function will fail to produce a valid file on the client if the file was changed in between requests for chunks.
// There are ways to work around that, but doing so is beyond the scope of this version of the sample. A simple fix would be
// to keep the file open between requests and prevent writing, but in the spirit of web services this app does not maintain
// state between requests.
HRESULT CFileRepServer::ReadAndSendFile(
__in CRequest* request,
__in const LPWSTR fileName,
__in LONGLONG chunkPosition,
__in_opt WS_ERROR* error)
{
PrintVerbose(L"Entering CFileRepServer::ReadAndSendFile");
HANDLE file = NULL;
HRESULT hr = S_OK;
file = CreateFileW(fileName, GENERIC_READ, FILE_SHARE_READ, NULL, OPEN_EXISTING, FILE_ATTRIBUTE_NORMAL, NULL);
if (INVALID_HANDLE_VALUE == file)
{
PrintInfo(L"Invalid file name");
if (-1 != chunkPosition)
{
hr = SendError(request, GlobalStrings::invalidFileName);
}
else
{
hr = SendFileInfo(request, fileName, -1, chunkSize);
}
PrintVerbose(L"Leaving CFileRepServer::ReadAndSendFile");
return hr;
}
LARGE_INTEGER len;
if (!GetFileSizeEx(file, &len))
{
hr = HRESULT_FROM_WIN32(GetLastError());
PrintError(L"Unable to determine file length", true);
if (FAILED(SendError(request, GlobalStrings::unableToDetermineFileLength)))
{
PrintError(L"Unable to send failure back", true);
}
if (!CloseHandle(file))
{
PrintError(L"Unable to close file handle", true);
}
// This has its own return path to ensure that the right error info is returned.
// The main error path would overwrite it.
PrintVerbose(L"Leaving CFileRepServer::ReadAndSendFile");
return hr;
}
LONGLONG fileLength = len.QuadPart;
if (chunkPosition == DISCOVERY_REQUEST)
{
PrintInfo(L"Processing discovery message");
hr = SendFileInfo(request, fileName, fileLength, chunkSize);
}
else if (chunkPosition < -1)
{
PrintInfo(L"Invalid request");
hr = SendError(request, GlobalStrings::invalidRequest);
}
else if (chunkPosition >= fileLength)
{
PrintInfo(L"Request out of range of the file");
hr = SendError(request, GlobalStrings::outOfRange);
}
else
{
long chunkSize = this->chunkSize;
if (fileLength - chunkPosition < chunkSize)
{
chunkSize = (DWORD)(fileLength - chunkPosition);
}
LARGE_INTEGER pos;
pos.QuadPart = chunkPosition;
if (!SetFilePointerEx(file, pos, NULL, FILE_BEGIN))
{
PrintError(L"Unable to set file pointer", true);
hr = E_FAIL;
// Ignore return value as we already have a failure.
SendError(request, GlobalStrings::unableToSetFilePointer);
}
else
{
hr = ReadAndSendChunk(request, chunkSize, chunkPosition, file);
}
}
if (FAILED(hr))
{
PrintError(L"CFileRepServer::ReadAndSendFile\n", true);
PrintError(hr, error, true);
}
if (!CloseHandle(file))
{
hr = HRESULT_FROM_WIN32(GetLastError());
PrintError(L"Unable to close file handle", true);
}
PrintVerbose(L"Leaving CFileRepServer::ReadAndSendFile");
return hr;
}
/**
* 发送文件信息入口.
* @param pal class PalInfo
* @param flist 文件信息链表
* @note 文件路径链表中的数据将被本函数处理掉
*/
void SendFile::SendFileInfoEntry(PalInfo *pal, GSList *flist)
{
/* 发送文件信息 */
SendFileInfo(pal, 0, flist);
}