Added Toca Boca protocol dissector. (#1517)

Signed-off-by: lns <matzeton@googlemail.com>

1 files changed, 90 insertions, 0 deletions

diff --git a/src/lib/protocols/tocaboca.c b/src/lib/protocols/tocaboca.c
new file mode 100644
index 000000000..378f1b753
--- /dev/null
+++ b/src/lib/protocols/tocaboca.c
@@ -0,0 +1,90 @@
+/*
+ * tocaboca.c
+ *
+ * Copyright (C) 2011-22 - ntop.org
+ *
+ * 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_protocol_ids.h"
+
+#define NDPI_CURRENT_PROTO NDPI_PROTOCOL_TOCA_BOCA
+
+#include "ndpi_api.h"
+
+static void ndpi_int_toca_boca_add_connection(struct ndpi_detection_module_struct * const ndpi_struct,
+                                              struct ndpi_flow_struct * const flow)
+{
+  NDPI_LOG_INFO(ndpi_struct, "found TocaBoca\n");
+  ndpi_set_detected_protocol(ndpi_struct, flow,
+                             NDPI_PROTOCOL_TOCA_BOCA, NDPI_PROTOCOL_UNKNOWN, NDPI_CONFIDENCE_DPI);
+}
+
+void ndpi_search_toca_boca(struct ndpi_detection_module_struct *ndpi_struct,
+                           struct ndpi_flow_struct *flow)
+{
+  struct ndpi_packet_struct *packet = &ndpi_struct->packet;
+  u_int32_t payload_len = packet->payload_packet_len;
+
+  NDPI_LOG_DBG(ndpi_struct, "search TocaBoca\n");
+
+  if (packet->udp != NULL)
+  {
+    if (payload_len >= 13
+        && get_u_int32_t(packet->payload, 0) == 0x7d7d7d7d
+        && get_u_int32_t(packet->payload, 4) == 0x7d7d7d7d)
+    {
+      ndpi_int_toca_boca_add_connection(ndpi_struct, flow);
+      return;
+    }
+
+    if (flow->packet_counter == 1
+        && payload_len >= 24
+        && ntohl(get_u_int32_t(packet->payload, 0)) == 0xffff0001
+        && ntohl(get_u_int32_t(packet->payload, 12)) == 0x02ff0104)
+    {
+      ndpi_int_toca_boca_add_connection(ndpi_struct, flow);
+      return;
+    }
+
+    if (payload_len >= 32
+        && (ntohs(get_u_int16_t(packet->payload, 2)) == 0x0001
+            || ntohs(get_u_int16_t(packet->payload, 2)) == 0x0002
+            || ntohs(get_u_int16_t(packet->payload, 2)) == 0x0003)
+        && (ntohl(get_u_int32_t(packet->payload, 12)) == 0x01ff0000
+            || ntohl(get_u_int32_t(packet->payload, 12)) == 0x01000000)
+        && ntohl(get_u_int32_t(packet->payload, 16)) == 0x00000014)
+    {
+      ndpi_int_toca_boca_add_connection(ndpi_struct, flow);
+      return;
+    }
+  }
+
+  NDPI_EXCLUDE_PROTO(ndpi_struct, flow);
+}
+
+void init_toca_boca_dissector(struct ndpi_detection_module_struct *ndpi_struct,
+                              u_int32_t *id, NDPI_PROTOCOL_BITMASK *detection_bitmask)
+{
+  ndpi_set_bitmask_protocol_detection("TocaBoca", ndpi_struct, detection_bitmask, *id,
+				      NDPI_PROTOCOL_TOCA_BOCA,
+				      ndpi_search_toca_boca,
+				      NDPI_SELECTION_BITMASK_PROTOCOL_V4_V6_UDP_WITH_PAYLOAD,
+				      SAVE_DETECTION_BITMASK_AS_UNKNOWN,
+				      ADD_TO_DETECTION_BITMASK);
+
+  *id += 1;
+}
+