/*
 * collectd.c
 *
 * Copyright (C) 2014-18 - 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_COLLECTD

#include "ndpi_api.h"


void ndpi_search_collectd(struct ndpi_detection_module_struct *ndpi_struct, struct ndpi_flow_struct *flow)
{
    struct ndpi_packet_struct *packet = &flow->packet;
    u_int len = 0;

    NDPI_LOG_DBG(ndpi_struct, "search collectd\n");

    if (packet->udp == NULL) return;


    while(len < packet->payload_packet_len) {
        // u_int16_t elem_type = ntohs(*((u_int16_t*)&packet->payload[len]));
        u_int16_t elem_len = ntohs(*((u_int16_t*)&packet->payload[len+2]));

        if (elem_len == 0) break;

        len += elem_len;
    }

    if(len == packet->payload_packet_len) {
        NDPI_LOG_INFO(ndpi_struct, "found COLLECTD\n");
        ndpi_set_detected_protocol(ndpi_struct, flow, NDPI_PROTOCOL_COLLECTD);
    } else {
        NDPI_EXCLUDE_PROTO(ndpi_struct, flow);
    }
}
