1 files changed, 147 insertions, 0 deletions
diff --git a/src/lib/protocols/tivoconnect.c b/src/lib/protocols/tivoconnect.c
new file mode 100644
index 000000000..2d4d59e4c
--- /dev/null
+++ b/src/lib/protocols/tivoconnect.c
@@ -0,0 +1,147 @@
+/*
+ * tivoconnect.c
+ *
+ * Copyright (C) 2022 - 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_TIVOCONNECT
+
+#include "ndpi_api.h"
+
+static void ndpi_int_tivoconnect_add_connection(struct ndpi_detection_module_struct * const ndpi_struct,
+                                                struct ndpi_flow_struct * const flow)
+{
+  NDPI_LOG_INFO(ndpi_struct, "found tivoconnect\n");
+  ndpi_set_detected_protocol(ndpi_struct, flow,
+                             NDPI_PROTOCOL_TIVOCONNECT,
+                             NDPI_PROTOCOL_UNKNOWN,
+                             NDPI_CONFIDENCE_DPI);
+}
+
+static void dissect_tivoconnect_data(struct ndpi_detection_module_struct *ndpi_struct,
+                                     struct ndpi_flow_struct *flow)
+{
+  struct ndpi_packet_struct const * const packet = &ndpi_struct->packet;
+  char const * const payload = (char const *)packet->payload;
+  size_t const payload_len = packet->payload_packet_len;
+  char const *key = payload;
+  char const *newline;
+
+  for (newline = ndpi_strnstr(payload, "\n", payload_len);
+       newline != NULL;
+       key = ++newline,
+       newline = ndpi_strnstr(newline, "\n", payload_len - (newline - payload)))
+  {
+    size_t const line_len = newline - key;
+    char const *value = ndpi_strnstr(key, "=", line_len);
+
+    if (value == NULL)
+    {
+      ndpi_set_risk(ndpi_struct, flow, NDPI_MALFORMED_PACKET, "Missing value type in TiViConnect beacon");
+      continue;
+    }
+    value++;
+
+    size_t const key_len = value - 1 - key;
+    size_t const value_len = newline - value;
+
+    if (key_len == NDPI_STATICSTRING_LEN("identity") &&
+        strncasecmp(key, "identity", key_len) == 0)
+    {
+      if (value_len >= NDPI_STATICSTRING_LEN("uuid:") &&
+          strncasecmp(value, "uuid:", NDPI_STATICSTRING_LEN("uuid:")) == 0)
+      {
+        size_t const len = ndpi_min(sizeof(flow->protos.tivoconnect.identity_uuid) - 1,
+                                    value_len - NDPI_STATICSTRING_LEN("uuid:"));
+        strncpy(flow->protos.tivoconnect.identity_uuid,
+                value + NDPI_STATICSTRING_LEN("uuid:"), len);
+        flow->protos.tivoconnect.identity_uuid[len] = '\0';
+      }
+      continue;
+    }
+    if (key_len == NDPI_STATICSTRING_LEN("machine") &&
+        strncasecmp(key, "machine", key_len) == 0)
+    {
+      size_t const len = ndpi_min(sizeof(flow->protos.tivoconnect.machine) - 1,
+                                         value_len);
+      strncpy(flow->protos.tivoconnect.machine, value, len);
+      flow->protos.tivoconnect.machine[len] = '\0';
+      continue;
+    }
+    if (key_len == NDPI_STATICSTRING_LEN("platform") &&
+        strncasecmp(key, "platform", key_len) == 0)
+    {
+      size_t const len = ndpi_min(sizeof(flow->protos.tivoconnect.platform) - 1,
+                                         value_len);
+      strncpy(flow->protos.tivoconnect.platform, value, len);
+      flow->protos.tivoconnect.platform[len] = '\0';
+      continue;
+    }
+    if (key_len == NDPI_STATICSTRING_LEN("services") &&
+        strncasecmp(key, "services", key_len) == 0)
+    {
+      size_t const len = ndpi_min(sizeof(flow->protos.tivoconnect.services) - 1,
+                                         value_len);
+      strncpy(flow->protos.tivoconnect.services, value, len);
+      flow->protos.tivoconnect.services[len] = '\0';
+      continue;
+    }
+  }
+
+  if ((size_t)(key - payload) != payload_len)
+  {
+    ndpi_set_risk(ndpi_struct, flow, NDPI_MALFORMED_PACKET,
+                  "TiViConnect beacon malformed packet");
+  }
+}
+
+void ndpi_search_tivoconnect(struct ndpi_detection_module_struct *ndpi_struct,
+                             struct ndpi_flow_struct *flow)
+{
+  struct ndpi_packet_struct const * const packet = &ndpi_struct->packet;
+
+  NDPI_LOG_INFO(ndpi_struct, "search tivoconnect\n");
+
+  if (packet->payload_packet_len >= NDPI_STATICSTRING_LEN("tivoconnect=") &&
+      strncasecmp((char const *)packet->payload,
+                  "tivoconnect=", NDPI_STATICSTRING_LEN("tivoconnect=")) == 0)
+  {
+    ndpi_int_tivoconnect_add_connection(ndpi_struct, flow);
+  } else {
+    NDPI_EXCLUDE_PROTO(ndpi_struct, flow);
+    return;
+  }
+
+  dissect_tivoconnect_data(ndpi_struct, flow);
+}
+
+void init_tivoconnect_dissector(struct ndpi_detection_module_struct *ndpi_struct,
+                                u_int32_t *id, NDPI_PROTOCOL_BITMASK *detection_bitmask)
+{
+  ndpi_set_bitmask_protocol_detection("TiVoConnect", ndpi_struct, detection_bitmask, *id,
+    NDPI_PROTOCOL_TIVOCONNECT,
+    ndpi_search_tivoconnect,
+    NDPI_SELECTION_BITMASK_PROTOCOL_V4_V6_TCP_OR_UDP_WITH_PAYLOAD_WITHOUT_RETRANSMISSION,
+    SAVE_DETECTION_BITMASK_AS_UNKNOWN,
+    ADD_TO_DETECTION_BITMASK
+  );
+
+  *id += 1;
+}