Added MPEG TS protocol

Fixed possible decoding loop in RTCP dissector
Added test pcap for mpegts

1 files changed, 53 insertions, 0 deletions

diff --git a/src/lib/protocols/mpegts.c b/src/lib/protocols/mpegts.c
new file mode 100644
index 000000000..f0e81ac5b
--- /dev/null
+++ b/src/lib/protocols/mpegts.c
@@ -0,0 +1,53 @@
+/*
+ * mpegts.c (MPEG Transport Stream)
+ *          https://en.wikipedia.org/wiki/MPEG_transport_stream
+ *
+ * Copyright (C) 2015 - 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_api.h"
+
+#ifdef NDPI_PROTOCOL_MPEGTS
+
+void ndpi_search_mpegts(struct ndpi_detection_module_struct *ndpi_struct, struct ndpi_flow_struct *flow)
+{
+  struct ndpi_packet_struct *packet = &flow->packet;
+  u_int16_t dport = 0, sport = 0;
+
+  NDPI_LOG(NDPI_PROTOCOL_MPEGTS, ndpi_struct, NDPI_LOG_DEBUG, "search for MPEGTS.\n");
+
+  if((packet->udp != NULL) && ((packet->payload_packet_len % 188) == 0)) {
+    u_int i, num_chunks = packet->payload_packet_len / 188;
+    u_int32_t pkt_id;
+    
+    for(i=0; i<num_chunks; i++) {
+      u_int offset = 188 * i;
+
+      if(packet->payload[offset] != 0x47) goto no_mpegts;
+    }
+
+    /* This looks MPEG TS */
+    ndpi_int_add_connection(ndpi_struct, flow, NDPI_PROTOCOL_MPEGTS, NDPI_REAL_PROTOCOL);
+    return;
+  }    
+
+ no_mpegts:
+  NDPI_LOG(NDPI_PROTOCOL_MPEGTS, ndpi_struct, NDPI_LOG_DEBUG, "Excluded MPEGTS.\n");
+  NDPI_ADD_PROTOCOL_TO_BITMASK(flow->excluded_protocol_bitmask, NDPI_PROTOCOL_MPEGTS);
+}
+#endif