1 files changed, 83 insertions, 0 deletions
diff --git a/src/lib/protocols/filetopia.c b/src/lib/protocols/filetopia.c
new file mode 100644
index 000000000..d9ba1e820
--- /dev/null
+++ b/src/lib/protocols/filetopia.c
@@ -0,0 +1,83 @@
+/*
+ * filetopia.c
+ *
+ * Copyright (C) 2009-2011 by ipoque GmbH
+ * Copyright (C) 2011-15 - ntop.org
+ *
+ * This file is part of nDPI, an open source deep packet inspection
+ * library based on the OpenDPI and PACE technology by ipoque GmbH
+ *
+ * nDPI is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Lesser General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * nDPI is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public License
+ * along with nDPI.  If not, see <http://www.gnu.org/licenses/>.
+ *
+ */
+
+
+#include "ndpi_protocols.h"
+#ifdef NDPI_PROTOCOL_FILETOPIA
+
+
+static void ndpi_int_filetopia_add_connection(struct ndpi_detection_module_struct *ndpi_struct, struct ndpi_flow_struct *flow)
+{
+  ndpi_int_add_connection(ndpi_struct, flow, NDPI_PROTOCOL_FILETOPIA, NDPI_REAL_PROTOCOL);
+}
+
+void ndpi_search_filetopia_tcp(struct ndpi_detection_module_struct *ndpi_struct, struct ndpi_flow_struct *flow)
+{
+	struct ndpi_packet_struct *packet = &flow->packet;
+	
+//      struct ndpi_id_struct         *src=ndpi_struct->src;
+//      struct ndpi_id_struct         *dst=ndpi_struct->dst;
+
+	if (flow->l4.tcp.filetopia_stage == 0) {
+		if (packet->payload_packet_len >= 50 && packet->payload_packet_len <= 70
+			&& packet->payload[0] == 0x03 && packet->payload[1] == 0x9a
+			&& packet->payload[3] == 0x22 && packet->payload[packet->payload_packet_len - 1] == 0x2b) {
+			NDPI_LOG(NDPI_PROTOCOL_FILETOPIA, ndpi_struct, NDPI_LOG_DEBUG, "Filetopia stage 1 detected\n");
+			flow->l4.tcp.filetopia_stage = 1;
+			return;
+		}
+
+	} else if (flow->l4.tcp.filetopia_stage == 1) {
+		if (packet->payload_packet_len >= 100 && packet->payload[0] == 0x03
+			&& packet->payload[1] == 0x9a && (packet->payload[3] == 0x22 || packet->payload[3] == 0x23)) {
+
+			int i;
+			for (i = 0; i < 10; i++) {	// check 10 bytes for valid ASCII printable characters
+				if (!(packet->payload[5 + i] >= 0x20 && packet->payload[5 + i] <= 0x7e)) {
+					goto end_filetopia_nothing_found;
+				}
+			}
+
+			NDPI_LOG(NDPI_PROTOCOL_FILETOPIA, ndpi_struct, NDPI_LOG_DEBUG, "Filetopia stage 2 detected\n");
+			flow->l4.tcp.filetopia_stage = 2;
+			return;
+		}
+
+
+	} else if (flow->l4.tcp.filetopia_stage == 2) {
+		if (packet->payload_packet_len >= 4 && packet->payload_packet_len <= 100
+			&& packet->payload[0] == 0x03 && packet->payload[1] == 0x9a
+			&& (packet->payload[3] == 0x22 || packet->payload[3] == 0x23)) {
+			NDPI_LOG(NDPI_PROTOCOL_FILETOPIA, ndpi_struct, NDPI_LOG_DEBUG, "Filetopia detected\n");
+			ndpi_int_filetopia_add_connection(ndpi_struct, flow);
+			return;
+		}
+
+	}
+
+  end_filetopia_nothing_found:
+	NDPI_ADD_PROTOCOL_TO_BITMASK(flow->excluded_protocol_bitmask, NDPI_PROTOCOL_FILETOPIA);
+}
+
+#endif