Initial import from SVN

1 files changed, 100 insertions, 0 deletions

diff --git a/src/lib/protocols/teamviewer.c b/src/lib/protocols/teamviewer.c
new file mode 100644
index 000000000..0fe0810c9
--- /dev/null
+++ b/src/lib/protocols/teamviewer.c
@@ -0,0 +1,100 @@
+/*
+ * teamviewer.c
+ *
+ * Copyright (C) 2012 by Gianluca Costa xplico.org
+ * Copyright (C) 2012-15 - 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_protocols.h"
+
+#ifdef NDPI_PROTOCOL_TEAMVIEWER
+
+static void ndpi_int_teamview_add_connection(struct ndpi_detection_module_struct
+                                             *ndpi_struct, struct ndpi_flow_struct *flow)
+{
+  ndpi_int_add_connection(ndpi_struct, flow, NDPI_PROTOCOL_TEAMVIEWER, NDPI_REAL_PROTOCOL);
+  NDPI_LOG(NDPI_PROTOCOL_TEAMVIEWER, ndpi_struct, NDPI_LOG_TRACE, "TEAMWIEWER Found.\n");
+}
+
+
+void ndpi_search_teamview(struct ndpi_detection_module_struct *ndpi_struct, struct ndpi_flow_struct *flow)
+{
+  struct ndpi_packet_struct *packet = &flow->packet;
+  NDPI_LOG(NDPI_PROTOCOL_TEAMVIEWER, ndpi_struct, NDPI_LOG_TRACE, "TEAMWIEWER detection...\n");
+  /*
+    TeamViewer
+    178.77.120.0/25
+
+    http://myip.ms/view/ip_owners/144885/Teamviewer_Gmbh.html
+  */
+  if(flow->packet.iph) {
+    u_int32_t src = ntohl(flow->packet.iph->saddr);
+    u_int32_t dst = ntohl(flow->packet.iph->daddr);
+
+    /* 95.211.37.195 - 95.211.37.203 */
+    if(((src >= 1607673283) && (src <= 1607673291))
+       || ((dst >= 1607673283) && (dst <= 1607673291))
+       || ((src & 0xFFFFFF80 /* 255.255.255.128 */) == 0xB24D7800 /* 178.77.120.0 */)
+       || ((dst & 0xFFFFFF80 /* 255.255.255.128 */) == 0xB24D7800 /* 178.77.120.0 */)
+       ) {
+      ndpi_int_teamview_add_connection(ndpi_struct, flow);
+      return;
+    }
+  }
+
+  if(packet->payload_packet_len == 0) return;
+
+  if (packet->udp != NULL) {
+    if (packet->payload_packet_len > 13) {
+      if (packet->payload[0] == 0x00 && packet->payload[11] == 0x17 && packet->payload[12] == 0x24) { /* byte 0 is a counter/seq number, and at the start is 0 */
+	flow->l4.udp.teamviewer_stage++;
+	if (flow->l4.udp.teamviewer_stage == 4 ||
+	    packet->udp->dest == ntohs(5938) || packet->udp->source == ntohs(5938)) {
+	  ndpi_int_teamview_add_connection(ndpi_struct, flow);
+	}
+	return;
+      }
+    }
+  }
+  else if(packet->tcp != NULL) {
+    if (packet->payload_packet_len > 2) {
+      if (packet->payload[0] == 0x17 && packet->payload[1] == 0x24) {
+	flow->l4.udp.teamviewer_stage++;
+	if (flow->l4.udp.teamviewer_stage == 4 ||
+	    packet->tcp->dest == ntohs(5938) || packet->tcp->source == ntohs(5938)) {
+	  ndpi_int_teamview_add_connection(ndpi_struct, flow);
+	}
+	return;
+      }
+      else if (flow->l4.udp.teamviewer_stage) {
+	if (packet->payload[0] == 0x11 && packet->payload[1] == 0x30) {
+	  flow->l4.udp.teamviewer_stage++;
+	  if (flow->l4.udp.teamviewer_stage == 4)
+	    ndpi_int_teamview_add_connection(ndpi_struct, flow);
+	}
+	return;
+      }
+    }
+  }
+
+  NDPI_ADD_PROTOCOL_TO_BITMASK(flow->excluded_protocol_bitmask, NDPI_PROTOCOL_TEAMVIEWER);
+}
+#endif