Added HEP protocol detection support (sipcapture)

1 files changed, 72 insertions, 0 deletions

diff --git a/src/lib/protocols/hep.c b/src/lib/protocols/hep.c
new file mode 100644
index 000000000..11955ae1e
--- /dev/null
+++ b/src/lib/protocols/hep.c
@@ -0,0 +1,72 @@
+/*
+ * hep.c
+ *
+ * Copyright (C) 2009-2011 by ipoque GmbH
+ * Copyright (C) 2011-15 - ntop.org
+ * Copyright (C) 2011-15 - QXIP BV
+ *
+ * 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_HEP
+
+static void ndpi_int_hep_add_connection(struct ndpi_detection_module_struct
+					*ndpi_struct, struct ndpi_flow_struct *flow)
+{
+  ndpi_set_detected_protocol(ndpi_struct, flow, NDPI_PROTOCOL_HEP, NDPI_PROTOCOL_UNKNOWN);
+}
+
+void ndpi_search_hep(struct ndpi_detection_module_struct *ndpi_struct, struct ndpi_flow_struct *flow)
+{
+  struct ndpi_packet_struct *packet = &flow->packet;
+  const u_int8_t *packet_payload = packet->payload;
+  u_int32_t payload_len = packet->payload_packet_len;
+
+    NDPI_LOG(NDPI_PROTOCOL_HEP, ndpi_struct, NDPI_LOG_DEBUG, "searching for HEP.\n");
+    if (payload_len > 10) {
+	    if (memcmp(packet_payload, "HEP3", 4) == 0) {
+	      NDPI_LOG(NDPI_PROTOCOL_HEP, ndpi_struct, NDPI_LOG_DEBUG, "found HEP3.\n");
+	      ndpi_int_hep_add_connection(ndpi_struct, flow);
+	      return;
+	    } else if (memcmp(packet_payload, "HEP2", 4) == 0) {
+	      NDPI_LOG(NDPI_PROTOCOL_HEP, ndpi_struct, NDPI_LOG_DEBUG, "found HEP2.\n");
+	      ndpi_int_hep_add_connection(ndpi_struct, flow);
+	      return;
+	    }
+    }
+
+    NDPI_LOG(NDPI_PROTOCOL_HEP, ndpi_struct, NDPI_LOG_DEBUG, "exclude HEP.\n");
+    NDPI_ADD_PROTOCOL_TO_BITMASK(flow->excluded_protocol_bitmask, NDPI_PROTOCOL_HEP);
+}
+
+
+void init_hep_dissector(struct ndpi_detection_module_struct *ndpi_struct, u_int32_t *id, NDPI_PROTOCOL_BITMASK *detection_bitmask)
+{
+  ndpi_set_bitmask_protocol_detection("HEP", ndpi_struct, detection_bitmask, *id,
+				      NDPI_PROTOCOL_HEP,
+				      ndpi_search_hep,
+				      NDPI_SELECTION_BITMASK_PROTOCOL_V4_V6_TCP_OR_UDP_WITH_PAYLOAD,
+				      SAVE_DETECTION_BITMASK_AS_UNKNOWN,
+				      ADD_TO_DETECTION_BITMASK);
+
+  *id += 1;
+}
+
+#endif