C++ (Cpp) WLog_ERR_BIOの例

コード例 #1

ファイル: transport.c プロジェクト: ilammy/FreeRDP

int transport_read_layer(rdpTransport* transport, BYTE* data, int bytes)
{
	int read = 0;
	int status = -1;

	if (!transport->frontBio)
	{
		transport->layer = TRANSPORT_LAYER_CLOSED;
		return -1;
	}

	while (read < bytes)
	{
		status = BIO_read(transport->frontBio, data + read, bytes - read);

		if (status <= 0)
		{
			if (!transport->frontBio || !BIO_should_retry(transport->frontBio))
			{
				/* something unexpected happened, let's close */
				if (!transport->frontBio)
				{
					WLog_Print(transport->log, WLOG_ERROR, "BIO_read: transport->frontBio null");
					return -1;
				}

				WLog_ERR_BIO(transport, "BIO_read", transport->frontBio);
				transport->layer = TRANSPORT_LAYER_CLOSED;
				return -1;
			}

			/* non blocking will survive a partial read */
			if (!transport->blocking)
				return read;

			/* blocking means that we can't continue until we have read the number of requested bytes */
			if (BIO_wait_read(transport->frontBio, 100) < 0)
			{
				WLog_ERR_BIO(transport, "BIO_wait_read", transport->frontBio);
				return -1;
			}

			continue;
		}

#ifdef HAVE_VALGRIND_MEMCHECK_H
		VALGRIND_MAKE_MEM_DEFINED(data + read, bytes - read);
#endif
		read += status;
	}

	return read;
}

コード例 #2

ファイル: transport.c プロジェクト: Graf3x/FreeRDP

int transport_write(rdpTransport* transport, wStream* s)
{
	int length;
	int status = -1;
	int writtenlength = 0;

	EnterCriticalSection(&(transport->WriteLock));

	length = Stream_GetPosition(s);
	writtenlength = length;
	Stream_SetPosition(s, 0);

	if (length > 0)
	{
		WLog_Packet(WLog_Get(TAG), WLOG_TRACE, Stream_Buffer(s), length, WLOG_PACKET_OUTBOUND);
	}

	while (length > 0)
	{
		status = BIO_write(transport->frontBio, Stream_Pointer(s), length);

		if (status <= 0)
		{
			/* the buffered BIO that is at the end of the chain always says OK for writing,
			 * so a retry means that for any reason we need to read. The most probable
			 * is a SSL or TSG BIO in the chain.
			 */
			if (!BIO_should_retry(transport->frontBio))
			{
				WLog_ERR_BIO(TAG, "BIO_should_retry", transport->frontBio);
				goto out_cleanup;
			}

			/* non-blocking can live with blocked IOs */
			if (!transport->blocking)
			{
				WLog_ERR_BIO(TAG, "BIO_write", transport->frontBio);
				goto out_cleanup;
			}

			if (BIO_wait_write(transport->frontBio, 100) < 0)
			{
				WLog_ERR_BIO(TAG, "BIO_wait_write", transport->frontBio);
				status = -1;
				goto out_cleanup;
			}

			continue;
		}

		if (transport->blocking || transport->settings->WaitForOutputBufferFlush)
		{
			while (BIO_write_blocked(transport->frontBio))
			{
				if (BIO_wait_write(transport->frontBio, 100) < 0)
				{
					WLog_ERR(TAG, "error when selecting for write");
					status = -1;
					goto out_cleanup;
				}

				if (BIO_flush(transport->frontBio) < 1)
				{
					WLog_ERR(TAG, "error when flushing outputBuffer");
					status = -1;
					goto out_cleanup;
				}
			}
		}

		length -= status;
		Stream_Seek(s, status);
	}
	transport->written += writtenlength;

out_cleanup:

	if (status < 0)
	{
		/* A write error indicates that the peer has dropped the connection */
		transport->layer = TRANSPORT_LAYER_CLOSED;
	}

	if (s->pool)
		Stream_Release(s);

	LeaveCriticalSection(&(transport->WriteLock));
	return status;
}