Added sonos dissector

3 files changed, 84 insertions, 2 deletions

diff --git a/src/include/ndpi_private.h b/src/include/ndpi_private.h
index 54f59f652..2278428a5 100644
--- a/src/include/ndpi_private.h
+++ b/src/include/ndpi_private.h
@@ -786,6 +786,7 @@ void init_smb_dissector(struct ndpi_detection_module_struct *ndpi_struct, u_int3
 void init_snmp_dissector(struct ndpi_detection_module_struct *ndpi_struct, u_int32_t *id);
 void init_socrates_dissector(struct ndpi_detection_module_struct *ndpi_struct, u_int32_t *id);
 void init_socks_dissector(struct ndpi_detection_module_struct *ndpi_struct, u_int32_t *id);
+void init_sonos_dissector(struct ndpi_detection_module_struct *ndpi_struct, u_int32_t *id);
 void init_spotify_dissector(struct ndpi_detection_module_struct *ndpi_struct, u_int32_t *id);
 void init_ssh_dissector(struct ndpi_detection_module_struct *ndpi_struct, u_int32_t *id);
 void init_tls_dissector(struct ndpi_detection_module_struct *ndpi_struct, u_int32_t *id);
diff --git a/src/lib/ndpi_main.c b/src/lib/ndpi_main.c
index 464e61e6b..c1d5e39dc 100644
--- a/src/lib/ndpi_main.c
+++ b/src/lib/ndpi_main.c
@@ -1606,6 +1606,10 @@ static void ndpi_init_protocol_defaults(struct ndpi_detection_module_struct *ndp
 			  "Dropbox", NDPI_PROTOCOL_CATEGORY_CLOUD,
 			  ndpi_build_default_ports(ports_a, 0, 0, 0, 0, 0) /* TCP */,
 			  ndpi_build_default_ports(ports_b, 17500, 0, 0, 0, 0) /* UDP */);
+  ndpi_set_proto_defaults(ndpi_str, 0 /* encrypted */, 1 /* app proto */, NDPI_PROTOCOL_FUN, NDPI_PROTOCOL_SONOS,
+			  "Sonos", NDPI_PROTOCOL_CATEGORY_MUSIC,
+			  ndpi_build_default_ports(ports_a, 0, 0, 0, 0, 0) /* TCP */,
+			  ndpi_build_default_ports(ports_b, 0, 0, 0, 0, 0) /* UDP */);
   ndpi_set_proto_defaults(ndpi_str, 0 /* encrypted */, 1 /* app proto */, NDPI_PROTOCOL_FUN, NDPI_PROTOCOL_SPOTIFY,
 			  "Spotify", NDPI_PROTOCOL_CATEGORY_MUSIC,
 			  ndpi_build_default_ports(ports_a, 0, 0, 0, 0, 0) /* TCP */,
@@ -5830,6 +5834,9 @@ static int ndpi_callback_init(struct ndpi_detection_module_struct *ndpi_str) {
   /* DROPBOX */
   init_dropbox_dissector(ndpi_str, &a);
 
+  /* SONOS */
+  init_sonos_dissector(ndpi_str, &a);
+
   /* SPOTIFY */
   init_spotify_dissector(ndpi_str, &a);
 
@@ -7527,7 +7534,7 @@ static void ndpi_reconcile_msteams_udp(struct ndpi_detection_module_struct *ndpi
 				       struct ndpi_flow_struct *flow,
 				       u_int16_t master) {
   /* This function can NOT access &ndpi_str->packet since it is called also from ndpi_detection_giveup(), via ndpi_reconcile_protocols() */
-
+  
   if(flow->l4_proto == IPPROTO_UDP) {
     u_int16_t sport = ntohs(flow->c_port);
     u_int16_t dport = ntohs(flow->s_port);
@@ -7645,6 +7652,7 @@ static void ndpi_reconcile_protocols(struct ndpi_detection_module_struct *ndpi_s
 
   case NDPI_PROTOCOL_SYSLOG:
   case NDPI_PROTOCOL_MDNS:
+  case NDPI_PROTOCOL_SONOS:
     if(flow->l4_proto == IPPROTO_UDP)
       ndpi_unset_risk(flow, NDPI_UNIDIRECTIONAL_TRAFFIC);
     break;
@@ -7674,7 +7682,7 @@ static void ndpi_reconcile_protocols(struct ndpi_detection_module_struct *ndpi_s
 				 NDPI_CONFIDENCE_DPI_PARTIAL);
       }
     break;
-
+    
   case NDPI_PROTOCOL_SKYPE_TEAMS:
   case NDPI_PROTOCOL_SKYPE_TEAMS_CALL:
     if(flow->l4_proto == IPPROTO_UDP && ndpi_str->msteams_cache) {
diff --git a/src/lib/protocols/sonos.c b/src/lib/protocols/sonos.c
new file mode 100644
index 000000000..c203f2be9
--- /dev/null
+++ b/src/lib/protocols/sonos.c
@@ -0,0 +1,73 @@
+/*
+ * sonos.c
+ *
+ * Copyright (C) 2024 - 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_protocol_ids.h"
+
+#define NDPI_CURRENT_PROTO NDPI_PROTOCOL_SONOS
+
+#include "ndpi_api.h"
+#include "ndpi_private.h"
+
+static void ndpi_sonos_add_connection(struct ndpi_detection_module_struct *ndpi_struct, struct ndpi_flow_struct *flow) {
+  ndpi_set_detected_protocol(ndpi_struct, flow, NDPI_PROTOCOL_SONOS, NDPI_PROTOCOL_UNKNOWN, NDPI_CONFIDENCE_DPI);
+  NDPI_LOG_INFO(ndpi_struct, "Found Sonos flow\n");
+}
+
+void ndpi_search_sonos(struct ndpi_detection_module_struct *ndpi_struct, struct ndpi_flow_struct *flow) {
+  struct ndpi_packet_struct *packet = &ndpi_struct->packet;
+
+  NDPI_LOG_DBG(ndpi_struct, "Searching Sonos\n");
+
+  if((!ndpi_is_public_ipv4(ntohl(packet->iph->daddr)))
+     && ((ntohl(packet->iph->daddr) & 0xF0000000) != 0xE0000000 /* Not a multicast address */)) {  
+    if(packet->payload_packet_len == 48) {      
+      u_int16_t sonos_port = htons(12301);
+      
+      if((packet->udp->dest == sonos_port) || (packet->udp->source == sonos_port)) {	
+	ndpi_sonos_add_connection(ndpi_struct, flow);
+      }
+    } else {
+      u_int16_t sonos_port = htons(7080);
+      
+      if((packet->udp->dest == sonos_port)
+	 && ((packet->payload_packet_len < 200)
+	     || ((packet->payload_packet_len > 1000) && (packet->payload_packet_len < 1100)))) {
+	ndpi_sonos_add_connection(ndpi_struct, flow);
+      }
+    }
+  }
+  
+  NDPI_EXCLUDE_PROTO(ndpi_struct, flow);
+}
+
+
+void init_sonos_dissector(struct ndpi_detection_module_struct *ndpi_struct, u_int32_t *id)
+{
+  ndpi_set_bitmask_protocol_detection("Sonos", ndpi_struct, *id,
+				      NDPI_PROTOCOL_SONOS,
+				      ndpi_search_sonos,
+				      NDPI_SELECTION_BITMASK_PROTOCOL_UDP_WITH_PAYLOAD, /* Only IPv4 UDP traffic is expected. */
+				      SAVE_DETECTION_BITMASK_AS_UNKNOWN,
+				      ADD_TO_DETECTION_BITMASK);
+  *id += 1;
+}