Initial import from SVN

1 files changed, 77 insertions, 0 deletions

diff --git a/src/lib/protocols/dropbox.c b/src/lib/protocols/dropbox.c
new file mode 100644
index 000000000..e4ef2e0ce
--- /dev/null
+++ b/src/lib/protocols/dropbox.c
@@ -0,0 +1,77 @@
+/*
+ * dropbox.c
+ *
+ * Copyright (C) 2011-13 by 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_api.h"
+
+#ifdef NDPI_PROTOCOL_DROPBOX
+static void ndpi_int_dropbox_add_connection(struct ndpi_detection_module_struct *ndpi_struct,
+					    struct ndpi_flow_struct *flow,
+					    u_int8_t due_to_correlation)
+{
+  ndpi_int_add_connection(ndpi_struct, flow,
+			  NDPI_PROTOCOL_DROPBOX,
+			  due_to_correlation ? NDPI_CORRELATED_PROTOCOL : NDPI_REAL_PROTOCOL);
+}
+
+
+static void ndpi_check_dropbox(struct ndpi_detection_module_struct *ndpi_struct, struct ndpi_flow_struct *flow)
+{
+  struct ndpi_packet_struct *packet = &flow->packet;  
+  // const u_int8_t *packet_payload = packet->payload;
+  u_int32_t payload_len = packet->payload_packet_len;
+
+  if(packet->udp != NULL) {
+    u_int16_t dropbox_port = htons(17500);
+
+    if((packet->udp->source == dropbox_port)
+       && (packet->udp->dest == dropbox_port)) {
+      if(payload_len > 2) {
+	if(strncmp((const char *)packet->payload, "{\"", 2) == 0) {
+	  NDPI_LOG(NDPI_PROTOCOL_DROPBOX, ndpi_struct, NDPI_LOG_DEBUG, "Found dropbox.\n");
+	  ndpi_int_dropbox_add_connection(ndpi_struct, flow, 0);
+	  return;
+	}
+      }
+    }
+  }
+  
+  NDPI_LOG(NDPI_PROTOCOL_DROPBOX, ndpi_struct, NDPI_LOG_DEBUG, "exclude dropbox.\n");
+  NDPI_ADD_PROTOCOL_TO_BITMASK(flow->excluded_protocol_bitmask, NDPI_PROTOCOL_DROPBOX);
+}
+
+void ndpi_search_dropbox(struct ndpi_detection_module_struct *ndpi_struct, struct ndpi_flow_struct *flow)
+{
+  struct ndpi_packet_struct *packet = &flow->packet;
+
+  NDPI_LOG(NDPI_PROTOCOL_DROPBOX, ndpi_struct, NDPI_LOG_DEBUG, "dropbox detection...\n");
+
+  /* skip marked packets */
+  if (packet->detected_protocol_stack[0] != NDPI_PROTOCOL_DROPBOX) {
+    if (packet->tcp_retransmission == 0) {
+      ndpi_check_dropbox(ndpi_struct, flow);
+    }
+  }
+}
+
+#endif