added fix protocol https://github.com/ntop/nDPI/issues/372

1 files changed, 73 insertions, 0 deletions

diff --git a/src/lib/protocols/fix.c b/src/lib/protocols/fix.c
new file mode 100644
index 000000000..b96454c3f
--- /dev/null
+++ b/src/lib/protocols/fix.c
@@ -0,0 +1,73 @@
+/*
+ * fix.c
+ *
+ * Copyright (C) 2017 - 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_FIX
+
+void ndpi_search_fix(struct ndpi_detection_module_struct *ndpi_struct, struct ndpi_flow_struct *flow)
+{
+  struct ndpi_packet_struct *packet = &flow->packet;
+
+  if(packet->tcp) {
+    // 8=
+    if(packet->payload[0] == 0x38 && packet->payload[1] == 0x3d) {
+      // FIX.
+      if(packet->payload[2] == 0x46 &&
+	 packet->payload[3] == 0x49 &&
+	 packet->payload[4] == 0x58 &&
+	 packet->payload[5] == 0x2e) {
+	
+	NDPI_LOG(NDPI_PROTOCOL_FIX, ndpi_struct, NDPI_LOG_DEBUG, "FIX detected.\n");
+	ndpi_set_detected_protocol(ndpi_struct, flow, NDPI_PROTOCOL_FIX, NDPI_PROTOCOL_UNKNOWN);
+	return;
+      }
+      // 0. 9=
+      if(packet->payload[2] == 0x4f &&
+	 packet->payload[3] == 0x01 &&
+	 packet->payload[4] == 0x39 &&
+	 packet->payload[5] == 0x3d) {
+
+	NDPI_LOG(NDPI_PROTOCOL_FIX, ndpi_struct, NDPI_LOG_DEBUG, "FIX detected.\n");
+	ndpi_set_detected_protocol(ndpi_struct, flow, NDPI_PROTOCOL_FIX, NDPI_PROTOCOL_UNKNOWN);
+	return;
+      }
+    }
+  }
+  /* exclude FIX */
+  NDPI_ADD_PROTOCOL_TO_BITMASK(flow->excluded_protocol_bitmask, NDPI_PROTOCOL_FIX);
+}
+
+
+void init_fix_dissector(struct ndpi_detection_module_struct *ndpi_struct, u_int32_t *id, NDPI_PROTOCOL_BITMASK *detection_bitmask)
+{
+  ndpi_set_bitmask_protocol_detection("FIX", ndpi_struct, detection_bitmask, *id,
+				      NDPI_PROTOCOL_FIX,
+				      ndpi_search_fix,
+				      NDPI_SELECTION_BITMASK_PROTOCOL_V4_V6_TCP_WITH_PAYLOAD,
+				      SAVE_DETECTION_BITMASK_AS_UNKNOWN,
+				      ADD_TO_DETECTION_BITMASK);
+  *id += 1;
+}
+
+
+#endif