Initial import from SVN

1 files changed, 61 insertions, 0 deletions

diff --git a/src/lib/protocols/pptp.c b/src/lib/protocols/pptp.c
new file mode 100644
index 000000000..c5ad6c8b9
--- /dev/null
+++ b/src/lib/protocols/pptp.c
@@ -0,0 +1,61 @@
+/*
+ * pptp.c
+ *
+ * Copyright (C) 2009-2011 by ipoque GmbH
+ * Copyright (C) 2011-15 - 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 files */
+
+#include "ndpi_protocols.h"
+#ifdef NDPI_PROTOCOL_PPTP
+
+static void ndpi_int_pptp_add_connection(struct ndpi_detection_module_struct
+										   *ndpi_struct, struct ndpi_flow_struct *flow)
+{
+	ndpi_int_add_connection(ndpi_struct, flow, NDPI_PROTOCOL_PPTP, NDPI_REAL_PROTOCOL);
+}
+
+void ndpi_search_pptp(struct ndpi_detection_module_struct
+						*ndpi_struct, struct ndpi_flow_struct *flow)
+{
+	struct ndpi_packet_struct *packet = &flow->packet;
+	
+
+	// struct ndpi_id_struct *src=ndpi_struct->src;
+	// struct ndpi_id_struct *dst=ndpi_struct->dst;
+
+	if (packet->payload_packet_len >= 10 && get_u_int16_t(packet->payload, 0) == htons(packet->payload_packet_len)
+		&& get_u_int16_t(packet->payload, 2) == htons(0x0001)	/* message type: control message */
+		&&get_u_int32_t(packet->payload, 4) == htonl(0x1a2b3c4d)	/* cookie: correct */
+		&&(get_u_int16_t(packet->payload, 8) == htons(0x0001)	/* control type: start-control-connection-request */
+		)) {
+
+		NDPI_LOG(NDPI_PROTOCOL_PPTP, ndpi_struct, NDPI_LOG_DEBUG, "found pptp.\n");
+		ndpi_int_pptp_add_connection(ndpi_struct, flow);
+		return;
+	}
+
+	NDPI_LOG(NDPI_PROTOCOL_PPTP, ndpi_struct, NDPI_LOG_DEBUG, "exclude pptp.\n");
+	NDPI_ADD_PROTOCOL_TO_BITMASK(flow->excluded_protocol_bitmask, NDPI_PROTOCOL_PPTP);
+}
+#endif