From 2e5ceac844c32fb52f4f3042be5b872f8b0b4ff0 Mon Sep 17 00:00:00 2001 From: Luca Deri Date: Sun, 19 Apr 2015 07:25:59 +0200 Subject: Initial import from SVN --- src/lib/protocols/sflow.c | 49 +++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 49 insertions(+) create mode 100644 src/lib/protocols/sflow.c (limited to 'src/lib/protocols/sflow.c') diff --git a/src/lib/protocols/sflow.c b/src/lib/protocols/sflow.c new file mode 100644 index 000000000..980867634 --- /dev/null +++ b/src/lib/protocols/sflow.c @@ -0,0 +1,49 @@ +/* + * sflow.c + * + * Copyright (C) 2011-15 - 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 . + * + */ + + +#include "ndpi_api.h" + +#ifdef NDPI_PROTOCOL_SFLOW + +static void ndpi_check_sflow(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) + && (payload_len >= 24) + /* Version */ + && (packet->payload[0] == 0) && (packet->payload[1] == 0) && (packet->payload[2] == 0) + && ((packet->payload[3] == 2) || (packet->payload[3] == 5))) { + NDPI_LOG(NDPI_PROTOCOL_SFLOW, ndpi_struct, NDPI_LOG_DEBUG, "Found sflow.\n"); + ndpi_int_add_connection(ndpi_struct, flow, NDPI_PROTOCOL_SFLOW, NDPI_REAL_PROTOCOL); + return; + } +} + +void ndpi_search_sflow(struct ndpi_detection_module_struct *ndpi_struct, struct ndpi_flow_struct *flow) +{ + NDPI_LOG(NDPI_PROTOCOL_SFLOW, ndpi_struct, NDPI_LOG_DEBUG, "sflow detection...\n"); + ndpi_check_sflow(ndpi_struct, flow); +} + +#endif -- cgit v1.2.3