Add BJNP Protocol

1 files changed, 61 insertions, 0 deletions

diff --git a/src/lib/protocols/bjnp.c b/src/lib/protocols/bjnp.c
new file mode 100644
index 000000000..260bbb9ea
--- /dev/null
+++ b/src/lib/protocols/bjnp.c
@@ -0,0 +1,61 @@
+#include "ndpi_api.h"
+
+#ifdef NDPI_PROTOCOL_BJNP
+
+
+static void ndpi_int_bjnp_add_connection(struct ndpi_detection_module_struct *ndpi_struct,
+					    struct ndpi_flow_struct *flow,
+					    u_int8_t due_to_correlation)
+{
+  ndpi_set_detected_protocol(ndpi_struct, flow, NDPI_PROTOCOL_BJNP, NDPI_PROTOCOL_UNKNOWN);
+}
+
+
+static void ndpi_check_bjnp(struct ndpi_detection_module_struct *ndpi_struct, struct ndpi_flow_struct *flow)
+{
+  struct ndpi_packet_struct *packet = &flow->packet;
+  u_int32_t payload_len = packet->payload_packet_len;
+
+  if(packet->udp != NULL) {
+    if(payload_len > 2) {
+	  if(strncmp((const char *)packet->payload, "BJNP", 4) == 0) {
+	    NDPI_LOG(NDPI_PROTOCOL_BJNP, ndpi_struct, NDPI_LOG_DEBUG, "Found bjnp.\n");
+	    ndpi_int_bjnp_add_connection(ndpi_struct, flow, 0);
+	    return;
+	  }
+    }
+  }
+
+  NDPI_LOG(NDPI_PROTOCOL_BJNP, ndpi_struct, NDPI_LOG_DEBUG, "exclude bjnp.\n");
+  NDPI_ADD_PROTOCOL_TO_BITMASK(flow->excluded_protocol_bitmask, NDPI_PROTOCOL_BJNP);
+}
+
+void ndpi_search_bjnp(struct ndpi_detection_module_struct *ndpi_struct, struct ndpi_flow_struct *flow)
+{
+  struct ndpi_packet_struct *packet = &flow->packet;
+
+  NDPI_LOG(NDPI_PROTOCOL_BJNP, ndpi_struct, NDPI_LOG_DEBUG, "bjnp detection...\n");
+
+  /* skip marked packets */
+  if (packet->detected_protocol_stack[0] != NDPI_PROTOCOL_BJNP) {
+    if (packet->tcp_retransmission == 0) {
+      ndpi_check_bjnp(ndpi_struct, flow);
+    }
+  }
+}
+
+
+void init_bjnp_dissector(struct ndpi_detection_module_struct *ndpi_struct, u_int32_t *id, NDPI_PROTOCOL_BITMASK *detection_bitmask)
+{
+  ndpi_set_bitmask_protocol_detection("BJNP", ndpi_struct, detection_bitmask, *id,
+				      NDPI_PROTOCOL_BJNP,
+				      ndpi_search_bjnp,
+				      NDPI_SELECTION_BITMASK_PROTOCOL_UDP_WITH_PAYLOAD,
+				      SAVE_DETECTION_BITMASK_AS_UNKNOWN,
+				      ADD_TO_DETECTION_BITMASK);
+  *id += 1;
+}
+
+
+
+#endif