path: root/examples/c-influxd/c-influxd.c

#include <curl/curl.h>
#include <pthread.h>
#include <signal.h>
#include <stdio.h>
#include <string.h>
#include <sys/epoll.h>
#include <sys/timerfd.h>

#include <ndpi_typedefs.h>

#include "nDPIsrvd.h"
#include "utils.h"

#define MAX_RISKS_PER_FLOW 8
#define MAX_SEVERITIES_PER_FLOW 4

static int main_thread_shutdown = 0;
static int influxd_timerfd = -1;

static char * pidfile = NULL;
static char * serv_optarg = NULL;
static char * user = NULL;
static char * group = NULL;
static int test_mode = 0;
static char * influxdb_interval = NULL;
static nDPIsrvd_ull influxdb_interval_ull = 0uL;
static char * influxdb_url = NULL;
static char * influxdb_token = NULL;

struct flow_user_data
{
    nDPIsrvd_ull last_flow_src_l4_payload_len;
    nDPIsrvd_ull last_flow_dst_l4_payload_len;
    uint8_t risks[MAX_RISKS_PER_FLOW];
    uint8_t severities[MAX_SEVERITIES_PER_FLOW];
    uint8_t category;
    uint8_t breed;
    uint8_t confidence;
    // "fallthroughs" if we are not in sync with nDPI
    uint8_t risk_ndpid_invalid : 1;
    uint8_t category_ndpid_invalid : 1;
    uint8_t breed_ndpid_invalid : 1;
    uint8_t confidence_ndpid_invalid : 1;
    // detection status
    uint8_t new_seen : 1;
    uint8_t is_detected : 1;
    uint8_t is_guessed : 1;
    uint8_t is_not_detected : 1;
    // flow state
    uint8_t is_info : 1;
    uint8_t is_finished : 1;
    // Layer3 / Layer4
    uint8_t is_ip4 : 1;
    uint8_t is_ip6 : 1;
    uint8_t is_other_l3 : 1;
    uint8_t is_tcp : 1;
    uint8_t is_udp : 1;
    uint8_t is_icmp : 1;
    uint8_t is_other_l4 : 1;
};

struct influx_ctx
{
    CURL * curl;
    CURLcode last_result;
    struct curl_slist * http_header;
};

static struct
{
    pthread_mutex_t rw_lock;

    struct
    {
        uint64_t json_lines;
        uint64_t json_bytes;

        uint64_t flow_new_count;
        uint64_t flow_end_count;
        uint64_t flow_idle_count;
        uint64_t flow_update_count;
        uint64_t flow_analyse_count;
        uint64_t flow_guessed_count;
        uint64_t flow_detected_count;
        uint64_t flow_detection_update_count;
        uint64_t flow_not_detected_count;

        uint64_t packet_count;
        uint64_t packet_flow_count;

        uint64_t init_count;
        uint64_t reconnect_count;
        uint64_t shutdown_count;
        uint64_t status_count;

        uint64_t error_unknown_datalink;
        uint64_t error_unknown_l3_protocol;
        uint64_t error_unsupported_datalink;
        uint64_t error_packet_too_short;
        uint64_t error_packet_type_unknown;
        uint64_t error_packet_header_invalid;
        uint64_t error_ip4_packet_too_short;
        uint64_t error_ip4_size_smaller_than_header;
        uint64_t error_ip4_l4_payload_detection;
        uint64_t error_ip6_packet_too_short;
        uint64_t error_ip6_size_smaller_than_header;
        uint64_t error_ip6_l4_payload_detection;
        uint64_t error_tcp_packet_too_short;
        uint64_t error_udp_packet_too_short;
        uint64_t error_capture_size_smaller_than_packet;
        uint64_t error_max_flows_to_track;
        uint64_t error_flow_memory_alloc;

        uint64_t flow_src_total_bytes;
        uint64_t flow_dst_total_bytes;
        uint64_t flow_risky_count;
    } counters;

    struct
    {
        uint64_t flow_state_info;
        uint64_t flow_state_finished;

        uint64_t flow_breed_safe_count;
        uint64_t flow_breed_acceptable_count;
        uint64_t flow_breed_fun_count;
        uint64_t flow_breed_unsafe_count;
        uint64_t flow_breed_potentially_dangerous_count;
        uint64_t flow_breed_tracker_ads_count;
        uint64_t flow_breed_dangerous_count;
        uint64_t flow_breed_unrated_count;
        uint64_t flow_breed_unknown_count;

        uint64_t flow_category_unspecified_count;
        uint64_t flow_category_media_count;
        uint64_t flow_category_vpn_count;
        uint64_t flow_category_email_count;
        uint64_t flow_category_data_transfer_count;
        uint64_t flow_category_web_count;
        uint64_t flow_category_social_network_count;
        uint64_t flow_category_download_count;
        uint64_t flow_category_game_count;
        uint64_t flow_category_chat_count;
        uint64_t flow_category_voip_count;
        uint64_t flow_category_database_count;
        uint64_t flow_category_remote_access_count;
        uint64_t flow_category_cloud_count;
        uint64_t flow_category_network_count;
        uint64_t flow_category_collaborative_count;
        uint64_t flow_category_rpc_count;
        uint64_t flow_category_streaming_count;
        uint64_t flow_category_system_count;
        uint64_t flow_category_software_update_count;
        uint64_t flow_category_music_count;
        uint64_t flow_category_video_count;
        uint64_t flow_category_shopping_count;
        uint64_t flow_category_productivity_count;
        uint64_t flow_category_file_sharing_count;
        uint64_t flow_category_conn_check_count;
        uint64_t flow_category_iot_scada_count;
        uint64_t flow_category_virt_assistant_count;
        uint64_t flow_category_cybersecurity_count;
        uint64_t flow_category_adult_content_count;
        uint64_t flow_category_mining_count;
        uint64_t flow_category_malware_count;
        uint64_t flow_category_advertisment_count;
        uint64_t flow_category_banned_site_count;
        uint64_t flow_category_site_unavail_count;
        uint64_t flow_category_allowed_site_count;
        uint64_t flow_category_antimalware_count;
        uint64_t flow_category_crypto_currency_count;
        uint64_t flow_category_gambling_count;
        uint64_t flow_category_unknown_count;

        uint64_t flow_confidence_by_port;
        uint64_t flow_confidence_dpi_partial;
        uint64_t flow_confidence_dpi_partial_cache;
        uint64_t flow_confidence_dpi_cache;
        uint64_t flow_confidence_dpi;
        uint64_t flow_confidence_nbpf;
        uint64_t flow_confidence_by_ip;
        uint64_t flow_confidence_dpi_aggressive;
        uint64_t flow_confidence_custom_rule;
        uint64_t flow_confidence_unknown;

        uint64_t flow_severity_low;
        uint64_t flow_severity_medium;
        uint64_t flow_severity_high;
        uint64_t flow_severity_severe;
        uint64_t flow_severity_critical;
        uint64_t flow_severity_emergency;
        uint64_t flow_severity_unknown;

        uint64_t flow_l3_ip4_count;
        uint64_t flow_l3_ip6_count;
        uint64_t flow_l3_other_count;

        uint64_t flow_l4_tcp_count;
        uint64_t flow_l4_udp_count;
        uint64_t flow_l4_icmp_count;
        uint64_t flow_l4_other_count;

        uint64_t flow_active_count;
        uint64_t flow_detected_count;
        uint64_t flow_guessed_count;
        uint64_t flow_not_detected_count;

        nDPIsrvd_ull flow_risk_count[NDPI_MAX_RISK - 1 /* NDPI_NO_RISK */];
        nDPIsrvd_ull flow_risk_unknown_count;
    } gauges[2]; /* values after InfluxDB push: gauges[0] -= gauges[1], gauges[1] is zero'd afterwards */
} influxd_statistics = {.rw_lock = PTHREAD_MUTEX_INITIALIZER};

struct global_map
{
    char const * const json_key;
    struct
    {
        uint64_t * const global_stat_inc;
        uint64_t * const global_stat_dec;
    };
};

#define INFLUXD_STATS_COUNTER_PTR(member)                                                                              \
    {                                                                                                                  \
        .global_stat_inc = &(influxd_statistics.counters.member), NULL                                                 \
    }
#define INFLUXD_STATS_GAUGE_PTR(member)                                                                                \
    {                                                                                                                  \
        .global_stat_inc = &(influxd_statistics.gauges[0].member),                                                     \
        .global_stat_dec = &(influxd_statistics.gauges[1].member)                                                      \
    }
#define INFLUXD_STATS_COUNTER_INC(member) (influxd_statistics.counters.member++)
#define INFLUXD_STATS_GAUGE_RES(member) (influxd_statistics.gauges[0].member--)
#define INFLUXD_STATS_GAUGE_INC(member) (influxd_statistics.gauges[0].member++)
#define INFLUXD_STATS_GAUGE_DEC(member) (influxd_statistics.gauges[1].member++)
#define INFLUXD_STATS_GAUGE_SUB(member) (influxd_statistics.gauges[0].member -= influxd_statistics.gauges[1].member)
#define INFLUXD_STATS_MAP_NOTNULL(map, index) (map[index - 1].global_stat_dec != NULL)
#define INFLUXD_STATS_MAP_DEC(map, index) ((*map[index - 1].global_stat_dec)++)

static struct global_map const flow_event_map[] = {{"new", INFLUXD_STATS_COUNTER_PTR(flow_new_count)},
                                                   {"end", INFLUXD_STATS_COUNTER_PTR(flow_end_count)},
                                                   {"idle", INFLUXD_STATS_COUNTER_PTR(flow_idle_count)},
                                                   {"update", INFLUXD_STATS_COUNTER_PTR(flow_update_count)},
                                                   {"analyse", INFLUXD_STATS_COUNTER_PTR(flow_analyse_count)},
                                                   {"guessed", INFLUXD_STATS_COUNTER_PTR(flow_guessed_count)},
                                                   {"detected", INFLUXD_STATS_COUNTER_PTR(flow_detected_count)},
                                                   {"detection-update",
                                                    INFLUXD_STATS_COUNTER_PTR(flow_detection_update_count)},
                                                   {"not-detected",
                                                    INFLUXD_STATS_COUNTER_PTR(flow_not_detected_count)}};

static struct global_map const packet_event_map[] = {{"packet", INFLUXD_STATS_COUNTER_PTR(packet_count)},
                                                     {"packet-flow", INFLUXD_STATS_COUNTER_PTR(packet_flow_count)}};

static struct global_map const daemon_event_map[] = {{"init", INFLUXD_STATS_COUNTER_PTR(init_count)},
                                                     {"reconnect", INFLUXD_STATS_COUNTER_PTR(reconnect_count)},
                                                     {"shutdown", INFLUXD_STATS_COUNTER_PTR(shutdown_count)},
                                                     {"status", INFLUXD_STATS_COUNTER_PTR(status_count)}};

static struct global_map const error_event_map[] = {
    {"Unknown datalink layer packet", INFLUXD_STATS_COUNTER_PTR(error_unknown_datalink)},
    {"Unknown L3 protocol", INFLUXD_STATS_COUNTER_PTR(error_unknown_l3_protocol)},
    {"Unsupported datalink layer", INFLUXD_STATS_COUNTER_PTR(error_unsupported_datalink)},
    {"Packet too short", INFLUXD_STATS_COUNTER_PTR(error_packet_too_short)},
    {"Unknown packet type", INFLUXD_STATS_COUNTER_PTR(error_packet_type_unknown)},
    {"Packet header invalid", INFLUXD_STATS_COUNTER_PTR(error_packet_header_invalid)},
    {"IP4 packet too short", INFLUXD_STATS_COUNTER_PTR(error_ip4_packet_too_short)},
    {"Packet smaller than IP4 header", INFLUXD_STATS_COUNTER_PTR(error_ip4_size_smaller_than_header)},
    {"nDPI IPv4\\/L4 payload detection failed", INFLUXD_STATS_COUNTER_PTR(error_ip4_l4_payload_detection)},
    {"IP6 packet too short", INFLUXD_STATS_COUNTER_PTR(error_ip6_packet_too_short)},
    {"Packet smaller than IP6 header", INFLUXD_STATS_COUNTER_PTR(error_ip6_size_smaller_than_header)},
    {"nDPI IPv6\\/L4 payload detection failed", INFLUXD_STATS_COUNTER_PTR(error_ip6_l4_payload_detection)},
    {"TCP packet smaller than expected", INFLUXD_STATS_COUNTER_PTR(error_tcp_packet_too_short)},
    {"UDP packet smaller than expected", INFLUXD_STATS_COUNTER_PTR(error_udp_packet_too_short)},
    {"Captured packet size is smaller than expected packet size",
     INFLUXD_STATS_COUNTER_PTR(error_capture_size_smaller_than_packet)},
    {"Max flows to track reached", INFLUXD_STATS_COUNTER_PTR(error_max_flows_to_track)},
    {"Flow memory allocation failed", INFLUXD_STATS_COUNTER_PTR(error_flow_memory_alloc)}};

static struct global_map const breeds_map[] = {{"Safe", INFLUXD_STATS_GAUGE_PTR(flow_breed_safe_count)},
                                               {"Acceptable", INFLUXD_STATS_GAUGE_PTR(flow_breed_acceptable_count)},
                                               {"Fun", INFLUXD_STATS_GAUGE_PTR(flow_breed_fun_count)},
                                               {"Unsafe", INFLUXD_STATS_GAUGE_PTR(flow_breed_unsafe_count)},
                                               {"Potentially Dangerous",
                                                INFLUXD_STATS_GAUGE_PTR(flow_breed_potentially_dangerous_count)},
                                               {"Tracker\\/Ads", INFLUXD_STATS_GAUGE_PTR(flow_breed_tracker_ads_count)},
                                               {"Dangerous", INFLUXD_STATS_GAUGE_PTR(flow_breed_dangerous_count)},
                                               {"Unrated", INFLUXD_STATS_GAUGE_PTR(flow_breed_unrated_count)},
                                               {NULL, INFLUXD_STATS_GAUGE_PTR(flow_breed_unknown_count)}};

static struct global_map const categories_map[] = {
    {"Unspecified", INFLUXD_STATS_GAUGE_PTR(flow_category_unspecified_count)},
    {"Media", INFLUXD_STATS_GAUGE_PTR(flow_category_media_count)},
    {"VPN", INFLUXD_STATS_GAUGE_PTR(flow_category_vpn_count)},
    {"Email", INFLUXD_STATS_GAUGE_PTR(flow_category_email_count)},
    {"DataTransfer", INFLUXD_STATS_GAUGE_PTR(flow_category_data_transfer_count)},
    {"Web", INFLUXD_STATS_GAUGE_PTR(flow_category_web_count)},
    {"SocialNetwork", INFLUXD_STATS_GAUGE_PTR(flow_category_social_network_count)},
    {"Download", INFLUXD_STATS_GAUGE_PTR(flow_category_download_count)},
    {"Game", INFLUXD_STATS_GAUGE_PTR(flow_category_game_count)},
    {"Chat", INFLUXD_STATS_GAUGE_PTR(flow_category_chat_count)},
    {"VoIP", INFLUXD_STATS_GAUGE_PTR(flow_category_voip_count)},
    {"Database", INFLUXD_STATS_GAUGE_PTR(flow_category_database_count)},
    {"RemoteAccess", INFLUXD_STATS_GAUGE_PTR(flow_category_remote_access_count)},
    {"Cloud", INFLUXD_STATS_GAUGE_PTR(flow_category_cloud_count)},
    {"Network", INFLUXD_STATS_GAUGE_PTR(flow_category_network_count)},
    {"Collaborative", INFLUXD_STATS_GAUGE_PTR(flow_category_collaborative_count)},
    {"RPC", INFLUXD_STATS_GAUGE_PTR(flow_category_rpc_count)},
    {"Streaming", INFLUXD_STATS_GAUGE_PTR(flow_category_streaming_count)},
    {"System", INFLUXD_STATS_GAUGE_PTR(flow_category_system_count)},
    {"SoftwareUpdate", INFLUXD_STATS_GAUGE_PTR(flow_category_software_update_count)},
    {"Music", INFLUXD_STATS_GAUGE_PTR(flow_category_music_count)},
    {"Video", INFLUXD_STATS_GAUGE_PTR(flow_category_video_count)},
    {"Shopping", INFLUXD_STATS_GAUGE_PTR(flow_category_shopping_count)},
    {"Productivity", INFLUXD_STATS_GAUGE_PTR(flow_category_productivity_count)},
    {"FileSharing", INFLUXD_STATS_GAUGE_PTR(flow_category_file_sharing_count)},
    {"ConnCheck", INFLUXD_STATS_GAUGE_PTR(flow_category_conn_check_count)},
    {"IoT-Scada", INFLUXD_STATS_GAUGE_PTR(flow_category_iot_scada_count)},
    {"VirtAssistant", INFLUXD_STATS_GAUGE_PTR(flow_category_virt_assistant_count)},
    {"Cybersecurity", INFLUXD_STATS_GAUGE_PTR(flow_category_cybersecurity_count)},
    {"AdultContent", INFLUXD_STATS_GAUGE_PTR(flow_category_adult_content_count)},
    {"Mining", INFLUXD_STATS_GAUGE_PTR(flow_category_mining_count)},
    {"Malware", INFLUXD_STATS_GAUGE_PTR(flow_category_malware_count)},
    {"Advertisement", INFLUXD_STATS_GAUGE_PTR(flow_category_advertisment_count)},
    {"Banned_Site", INFLUXD_STATS_GAUGE_PTR(flow_category_banned_site_count)},
    {"Site_Unavailable", INFLUXD_STATS_GAUGE_PTR(flow_category_site_unavail_count)},
    {"Allowed_Site", INFLUXD_STATS_GAUGE_PTR(flow_category_allowed_site_count)},
    {"Antimalware", INFLUXD_STATS_GAUGE_PTR(flow_category_antimalware_count)},
    {"Crypto_Currency", INFLUXD_STATS_GAUGE_PTR(flow_category_crypto_currency_count)},
    {"Gambling", INFLUXD_STATS_GAUGE_PTR(flow_category_gambling_count)},
    {NULL, INFLUXD_STATS_GAUGE_PTR(flow_category_unknown_count)}};

static struct global_map const confidence_map[] = {
    {"Match by port", INFLUXD_STATS_GAUGE_PTR(flow_confidence_by_port)},
    {"DPI (partial)", INFLUXD_STATS_GAUGE_PTR(flow_confidence_dpi_partial)},
    {"DPI (partial cache)", INFLUXD_STATS_GAUGE_PTR(flow_confidence_dpi_partial_cache)},
    {"DPI (cache)", INFLUXD_STATS_GAUGE_PTR(flow_confidence_dpi_cache)},
    {"DPI", INFLUXD_STATS_GAUGE_PTR(flow_confidence_dpi)},
    {"nBPF", INFLUXD_STATS_GAUGE_PTR(flow_confidence_nbpf)},
    {"Match by IP", INFLUXD_STATS_GAUGE_PTR(flow_confidence_by_ip)},
    {"DPI (aggressive)", INFLUXD_STATS_GAUGE_PTR(flow_confidence_dpi_aggressive)},
    {"Match by custom rule", INFLUXD_STATS_GAUGE_PTR(flow_confidence_custom_rule)},
    {NULL, INFLUXD_STATS_GAUGE_PTR(flow_confidence_unknown)}};

static struct global_map const severity_map[] = {{"Low", INFLUXD_STATS_GAUGE_PTR(flow_severity_low)},
                                                 {"Medium", INFLUXD_STATS_GAUGE_PTR(flow_severity_medium)},
                                                 {"High", INFLUXD_STATS_GAUGE_PTR(flow_severity_high)},
                                                 {"Severe", INFLUXD_STATS_GAUGE_PTR(flow_severity_severe)},
                                                 {"Critical", INFLUXD_STATS_GAUGE_PTR(flow_severity_critical)},
                                                 {"Emergency", INFLUXD_STATS_GAUGE_PTR(flow_severity_emergency)},
                                                 {NULL, INFLUXD_STATS_GAUGE_PTR(flow_severity_unknown)}};

#ifdef ENABLE_MEMORY_PROFILING
void nDPIsrvd_memprof_log_alloc(size_t alloc_size)
{
    (void)alloc_size;
}

void nDPIsrvd_memprof_log_free(size_t free_size)
{
    (void)free_size;
}

void nDPIsrvd_memprof_log(char const * const format, ...)
{
    va_list ap;

    va_start(ap, format);
    fprintf(stderr, "%s", "nDPIsrvd MemoryProfiler: ");
    vfprintf(stderr, format, ap);
    fprintf(stderr, "%s\n", "");
    va_end(ap);
}
#endif

#define INFLUXDB_FORMAT() "%s=%llu,"
#define INFLUXDB_FORMAT_END() "%s=%llu\n"
#define INFLUXDB_VALUE_COUNTER(value) #value, (unsigned long long int)influxd_statistics.counters.value
#define INFLUXDB_VALUE_GAUGE(value) #value, (unsigned long long int)influxd_statistics.gauges[0].value
#define CHECK_SNPRINTF_RET(bytes)                                                                                      \
    do                                                                                                                 \
    {                                                                                                                  \
        if (bytes <= 0 || (size_t)bytes >= siz)                                                                        \
        {                                                                                                              \
            goto failure;                                                                                              \
        }                                                                                                              \
        else                                                                                                           \
        {                                                                                                              \
            buf += bytes;                                                                                              \
            siz -= bytes;                                                                                              \
        }                                                                                                              \
    } while (0)
static int serialize_influx_line(char * buf, size_t siz)
{
    int bytes;

    pthread_mutex_lock(&influxd_statistics.rw_lock);

    bytes = snprintf(buf,
                     siz,
                     "%s " INFLUXDB_FORMAT() INFLUXDB_FORMAT() INFLUXDB_FORMAT() INFLUXDB_FORMAT_END(),
                     "general",
                     INFLUXDB_VALUE_COUNTER(json_lines),
                     INFLUXDB_VALUE_COUNTER(json_bytes),
                     INFLUXDB_VALUE_COUNTER(flow_src_total_bytes),
                     INFLUXDB_VALUE_COUNTER(flow_dst_total_bytes));
    CHECK_SNPRINTF_RET(bytes);

    bytes = snprintf(buf,
                     siz,
                     "%s " INFLUXDB_FORMAT() INFLUXDB_FORMAT() INFLUXDB_FORMAT() INFLUXDB_FORMAT() INFLUXDB_FORMAT()
                         INFLUXDB_FORMAT() INFLUXDB_FORMAT() INFLUXDB_FORMAT() INFLUXDB_FORMAT() INFLUXDB_FORMAT()
                             INFLUXDB_FORMAT() INFLUXDB_FORMAT() INFLUXDB_FORMAT() INFLUXDB_FORMAT() INFLUXDB_FORMAT()
                                 INFLUXDB_FORMAT() INFLUXDB_FORMAT() INFLUXDB_FORMAT() INFLUXDB_FORMAT()
                                     INFLUXDB_FORMAT() INFLUXDB_FORMAT() INFLUXDB_FORMAT() INFLUXDB_FORMAT()
                                         INFLUXDB_FORMAT() INFLUXDB_FORMAT() INFLUXDB_FORMAT() INFLUXDB_FORMAT()
                                             INFLUXDB_FORMAT() INFLUXDB_FORMAT() INFLUXDB_FORMAT() INFLUXDB_FORMAT()
                                                 INFLUXDB_FORMAT() INFLUXDB_FORMAT_END(),
                     "events",
                     INFLUXDB_VALUE_COUNTER(flow_new_count),
                     INFLUXDB_VALUE_COUNTER(flow_end_count),
                     INFLUXDB_VALUE_COUNTER(flow_idle_count),
                     INFLUXDB_VALUE_COUNTER(flow_update_count),
                     INFLUXDB_VALUE_COUNTER(flow_analyse_count),
                     INFLUXDB_VALUE_COUNTER(flow_guessed_count),
                     INFLUXDB_VALUE_COUNTER(flow_detected_count),
                     INFLUXDB_VALUE_COUNTER(flow_detection_update_count),
                     INFLUXDB_VALUE_COUNTER(flow_not_detected_count),
                     INFLUXDB_VALUE_COUNTER(flow_risky_count),
                     INFLUXDB_VALUE_COUNTER(packet_count),
                     INFLUXDB_VALUE_COUNTER(packet_flow_count),
                     INFLUXDB_VALUE_COUNTER(init_count),
                     INFLUXDB_VALUE_COUNTER(reconnect_count),
                     INFLUXDB_VALUE_COUNTER(shutdown_count),
                     INFLUXDB_VALUE_COUNTER(status_count),
                     INFLUXDB_VALUE_COUNTER(error_unknown_datalink),
                     INFLUXDB_VALUE_COUNTER(error_unknown_l3_protocol),
                     INFLUXDB_VALUE_COUNTER(error_unsupported_datalink),
                     INFLUXDB_VALUE_COUNTER(error_packet_too_short),
                     INFLUXDB_VALUE_COUNTER(error_packet_type_unknown),
                     INFLUXDB_VALUE_COUNTER(error_packet_header_invalid),
                     INFLUXDB_VALUE_COUNTER(error_ip4_packet_too_short),
                     INFLUXDB_VALUE_COUNTER(error_ip4_size_smaller_than_header),
                     INFLUXDB_VALUE_COUNTER(error_ip4_l4_payload_detection),
                     INFLUXDB_VALUE_COUNTER(error_ip6_packet_too_short),
                     INFLUXDB_VALUE_COUNTER(error_ip6_size_smaller_than_header),
                     INFLUXDB_VALUE_COUNTER(error_ip6_l4_payload_detection),
                     INFLUXDB_VALUE_COUNTER(error_tcp_packet_too_short),
                     INFLUXDB_VALUE_COUNTER(error_udp_packet_too_short),
                     INFLUXDB_VALUE_COUNTER(error_capture_size_smaller_than_packet),
                     INFLUXDB_VALUE_COUNTER(error_max_flows_to_track),
                     INFLUXDB_VALUE_COUNTER(error_flow_memory_alloc));
    CHECK_SNPRINTF_RET(bytes);

    bytes = snprintf(buf,
                     siz,
                     "%s " INFLUXDB_FORMAT() INFLUXDB_FORMAT_END(),
                     "state",
                     INFLUXDB_VALUE_GAUGE(flow_state_info),
                     INFLUXDB_VALUE_GAUGE(flow_state_finished));
    CHECK_SNPRINTF_RET(bytes);

    bytes = snprintf(buf,
                     siz,
                     "%s " INFLUXDB_FORMAT() INFLUXDB_FORMAT() INFLUXDB_FORMAT() INFLUXDB_FORMAT() INFLUXDB_FORMAT()
                         INFLUXDB_FORMAT() INFLUXDB_FORMAT() INFLUXDB_FORMAT() INFLUXDB_FORMAT_END(),
                     "breed",
                     INFLUXDB_VALUE_GAUGE(flow_breed_safe_count),
                     INFLUXDB_VALUE_GAUGE(flow_breed_acceptable_count),
                     INFLUXDB_VALUE_GAUGE(flow_breed_fun_count),
                     INFLUXDB_VALUE_GAUGE(flow_breed_unsafe_count),
                     INFLUXDB_VALUE_GAUGE(flow_breed_potentially_dangerous_count),
                     INFLUXDB_VALUE_GAUGE(flow_breed_tracker_ads_count),
                     INFLUXDB_VALUE_GAUGE(flow_breed_dangerous_count),
                     INFLUXDB_VALUE_GAUGE(flow_breed_unrated_count),
                     INFLUXDB_VALUE_GAUGE(flow_breed_unknown_count));
    CHECK_SNPRINTF_RET(bytes);

    bytes = snprintf(buf,
                     siz,
                     "%s " INFLUXDB_FORMAT() INFLUXDB_FORMAT() INFLUXDB_FORMAT() INFLUXDB_FORMAT() INFLUXDB_FORMAT()
                         INFLUXDB_FORMAT() INFLUXDB_FORMAT() INFLUXDB_FORMAT() INFLUXDB_FORMAT() INFLUXDB_FORMAT()
                             INFLUXDB_FORMAT() INFLUXDB_FORMAT() INFLUXDB_FORMAT() INFLUXDB_FORMAT() INFLUXDB_FORMAT()
                                 INFLUXDB_FORMAT() INFLUXDB_FORMAT() INFLUXDB_FORMAT() INFLUXDB_FORMAT()
                                     INFLUXDB_FORMAT() INFLUXDB_FORMAT() INFLUXDB_FORMAT() INFLUXDB_FORMAT()
                                         INFLUXDB_FORMAT() INFLUXDB_FORMAT() INFLUXDB_FORMAT() INFLUXDB_FORMAT()
                                             INFLUXDB_FORMAT() INFLUXDB_FORMAT() INFLUXDB_FORMAT() INFLUXDB_FORMAT()
                                                 INFLUXDB_FORMAT() INFLUXDB_FORMAT() INFLUXDB_FORMAT() INFLUXDB_FORMAT()
                                                     INFLUXDB_FORMAT() INFLUXDB_FORMAT() INFLUXDB_FORMAT()
                                                         INFLUXDB_FORMAT() INFLUXDB_FORMAT_END(),

                     "category",
                     INFLUXDB_VALUE_GAUGE(flow_category_unspecified_count),
                     INFLUXDB_VALUE_GAUGE(flow_category_media_count),
                     INFLUXDB_VALUE_GAUGE(flow_category_vpn_count),
                     INFLUXDB_VALUE_GAUGE(flow_category_email_count),
                     INFLUXDB_VALUE_GAUGE(flow_category_data_transfer_count),
                     INFLUXDB_VALUE_GAUGE(flow_category_web_count),
                     INFLUXDB_VALUE_GAUGE(flow_category_social_network_count),
                     INFLUXDB_VALUE_GAUGE(flow_category_download_count),
                     INFLUXDB_VALUE_GAUGE(flow_category_game_count),
                     INFLUXDB_VALUE_GAUGE(flow_category_chat_count),
                     INFLUXDB_VALUE_GAUGE(flow_category_voip_count),
                     INFLUXDB_VALUE_GAUGE(flow_category_database_count),
                     INFLUXDB_VALUE_GAUGE(flow_category_remote_access_count),
                     INFLUXDB_VALUE_GAUGE(flow_category_cloud_count),
                     INFLUXDB_VALUE_GAUGE(flow_category_network_count),
                     INFLUXDB_VALUE_GAUGE(flow_category_collaborative_count),
                     INFLUXDB_VALUE_GAUGE(flow_category_rpc_count),
                     INFLUXDB_VALUE_GAUGE(flow_category_streaming_count),
                     INFLUXDB_VALUE_GAUGE(flow_category_system_count),
                     INFLUXDB_VALUE_GAUGE(flow_category_software_update_count),
                     INFLUXDB_VALUE_GAUGE(flow_category_music_count),
                     INFLUXDB_VALUE_GAUGE(flow_category_video_count),
                     INFLUXDB_VALUE_GAUGE(flow_category_shopping_count),
                     INFLUXDB_VALUE_GAUGE(flow_category_productivity_count),
                     INFLUXDB_VALUE_GAUGE(flow_category_file_sharing_count),
                     INFLUXDB_VALUE_GAUGE(flow_category_conn_check_count),
                     INFLUXDB_VALUE_GAUGE(flow_category_iot_scada_count),
                     INFLUXDB_VALUE_GAUGE(flow_category_virt_assistant_count),
                     INFLUXDB_VALUE_GAUGE(flow_category_cybersecurity_count),
                     INFLUXDB_VALUE_GAUGE(flow_category_adult_content_count),
                     INFLUXDB_VALUE_GAUGE(flow_category_mining_count),
                     INFLUXDB_VALUE_GAUGE(flow_category_malware_count),
                     INFLUXDB_VALUE_GAUGE(flow_category_advertisment_count),
                     INFLUXDB_VALUE_GAUGE(flow_category_banned_site_count),
                     INFLUXDB_VALUE_GAUGE(flow_category_site_unavail_count),
                     INFLUXDB_VALUE_GAUGE(flow_category_allowed_site_count),
                     INFLUXDB_VALUE_GAUGE(flow_category_antimalware_count),
                     INFLUXDB_VALUE_GAUGE(flow_category_crypto_currency_count),
                     INFLUXDB_VALUE_GAUGE(flow_category_gambling_count),
                     INFLUXDB_VALUE_GAUGE(flow_category_unknown_count));
    CHECK_SNPRINTF_RET(bytes);

    bytes = snprintf(buf,
                     siz,
                     "%s " INFLUXDB_FORMAT() INFLUXDB_FORMAT() INFLUXDB_FORMAT() INFLUXDB_FORMAT() INFLUXDB_FORMAT()
                         INFLUXDB_FORMAT() INFLUXDB_FORMAT() INFLUXDB_FORMAT() INFLUXDB_FORMAT() INFLUXDB_FORMAT_END(),
                     "confidence",
                     INFLUXDB_VALUE_GAUGE(flow_confidence_by_port),
                     INFLUXDB_VALUE_GAUGE(flow_confidence_dpi_partial),
                     INFLUXDB_VALUE_GAUGE(flow_confidence_dpi_partial_cache),
                     INFLUXDB_VALUE_GAUGE(flow_confidence_dpi_cache),
                     INFLUXDB_VALUE_GAUGE(flow_confidence_dpi),
                     INFLUXDB_VALUE_GAUGE(flow_confidence_nbpf),
                     INFLUXDB_VALUE_GAUGE(flow_confidence_by_ip),
                     INFLUXDB_VALUE_GAUGE(flow_confidence_dpi_aggressive),
                     INFLUXDB_VALUE_GAUGE(flow_confidence_custom_rule),
                     INFLUXDB_VALUE_GAUGE(flow_confidence_unknown));
    CHECK_SNPRINTF_RET(bytes);

    bytes = snprintf(buf,
                     siz,
                     "%s " INFLUXDB_FORMAT() INFLUXDB_FORMAT() INFLUXDB_FORMAT() INFLUXDB_FORMAT() INFLUXDB_FORMAT()
                         INFLUXDB_FORMAT() INFLUXDB_FORMAT_END(),
                     "severity",
                     INFLUXDB_VALUE_GAUGE(flow_severity_low),
                     INFLUXDB_VALUE_GAUGE(flow_severity_medium),
                     INFLUXDB_VALUE_GAUGE(flow_severity_high),
                     INFLUXDB_VALUE_GAUGE(flow_severity_severe),
                     INFLUXDB_VALUE_GAUGE(flow_severity_critical),
                     INFLUXDB_VALUE_GAUGE(flow_severity_emergency),
                     INFLUXDB_VALUE_GAUGE(flow_severity_unknown));
    CHECK_SNPRINTF_RET(bytes);

    bytes = snprintf(buf,
                     siz,
                     "%s " INFLUXDB_FORMAT() INFLUXDB_FORMAT() INFLUXDB_FORMAT_END(),
                     "layer3",
                     INFLUXDB_VALUE_GAUGE(flow_l3_ip4_count),
                     INFLUXDB_VALUE_GAUGE(flow_l3_ip6_count),
                     INFLUXDB_VALUE_GAUGE(flow_l3_other_count));
    CHECK_SNPRINTF_RET(bytes);

    bytes = snprintf(buf,
                     siz,
                     "%s " INFLUXDB_FORMAT() INFLUXDB_FORMAT() INFLUXDB_FORMAT() INFLUXDB_FORMAT_END(),
                     "layer4",
                     INFLUXDB_VALUE_GAUGE(flow_l4_tcp_count),
                     INFLUXDB_VALUE_GAUGE(flow_l4_udp_count),
                     INFLUXDB_VALUE_GAUGE(flow_l4_icmp_count),
                     INFLUXDB_VALUE_GAUGE(flow_l4_other_count));
    CHECK_SNPRINTF_RET(bytes);

    bytes = snprintf(buf,
                     siz,
                     "%s " INFLUXDB_FORMAT() INFLUXDB_FORMAT() INFLUXDB_FORMAT() INFLUXDB_FORMAT_END(),
                     "detection",
                     INFLUXDB_VALUE_GAUGE(flow_active_count),
                     INFLUXDB_VALUE_GAUGE(flow_detected_count),
                     INFLUXDB_VALUE_GAUGE(flow_guessed_count),
                     INFLUXDB_VALUE_GAUGE(flow_not_detected_count));
    CHECK_SNPRINTF_RET(bytes);

    bytes = snprintf(buf, siz, "%s " INFLUXDB_FORMAT(), "risks", INFLUXDB_VALUE_GAUGE(flow_risk_unknown_count));
    CHECK_SNPRINTF_RET(bytes);

    for (size_t i = 0; i < NDPI_MAX_RISK - 1 /* NDPI_NO_RISK */; ++i)
    {
        bytes = snprintf(buf,
                         siz,
                         "flow_risk_%zu_count=%llu,",
                         i + 1,
                         (unsigned long long int)influxd_statistics.gauges[0].flow_risk_count[i]);
        CHECK_SNPRINTF_RET(bytes);
    }
    buf[-1] = '\n';

failure:
    memset(&influxd_statistics.counters, 0, sizeof(influxd_statistics.counters));

    INFLUXD_STATS_GAUGE_SUB(flow_state_info);
    INFLUXD_STATS_GAUGE_SUB(flow_state_finished);

    INFLUXD_STATS_GAUGE_SUB(flow_breed_safe_count);
    INFLUXD_STATS_GAUGE_SUB(flow_breed_acceptable_count);
    INFLUXD_STATS_GAUGE_SUB(flow_breed_fun_count);
    INFLUXD_STATS_GAUGE_SUB(flow_breed_unsafe_count);
    INFLUXD_STATS_GAUGE_SUB(flow_breed_potentially_dangerous_count);
    INFLUXD_STATS_GAUGE_SUB(flow_breed_tracker_ads_count);
    INFLUXD_STATS_GAUGE_SUB(flow_breed_dangerous_count);
    INFLUXD_STATS_GAUGE_SUB(flow_breed_unrated_count);
    INFLUXD_STATS_GAUGE_SUB(flow_breed_unknown_count);

    INFLUXD_STATS_GAUGE_SUB(flow_category_unspecified_count);
    INFLUXD_STATS_GAUGE_SUB(flow_category_media_count);
    INFLUXD_STATS_GAUGE_SUB(flow_category_vpn_count);
    INFLUXD_STATS_GAUGE_SUB(flow_category_email_count);
    INFLUXD_STATS_GAUGE_SUB(flow_category_data_transfer_count);
    INFLUXD_STATS_GAUGE_SUB(flow_category_web_count);
    INFLUXD_STATS_GAUGE_SUB(flow_category_social_network_count);
    INFLUXD_STATS_GAUGE_SUB(flow_category_download_count);
    INFLUXD_STATS_GAUGE_SUB(flow_category_game_count);
    INFLUXD_STATS_GAUGE_SUB(flow_category_chat_count);
    INFLUXD_STATS_GAUGE_SUB(flow_category_voip_count);
    INFLUXD_STATS_GAUGE_SUB(flow_category_database_count);
    INFLUXD_STATS_GAUGE_SUB(flow_category_remote_access_count);
    INFLUXD_STATS_GAUGE_SUB(flow_category_cloud_count);
    INFLUXD_STATS_GAUGE_SUB(flow_category_network_count);
    INFLUXD_STATS_GAUGE_SUB(flow_category_collaborative_count);
    INFLUXD_STATS_GAUGE_SUB(flow_category_rpc_count);
    INFLUXD_STATS_GAUGE_SUB(flow_category_streaming_count);
    INFLUXD_STATS_GAUGE_SUB(flow_category_system_count);
    INFLUXD_STATS_GAUGE_SUB(flow_category_software_update_count);
    INFLUXD_STATS_GAUGE_SUB(flow_category_music_count);
    INFLUXD_STATS_GAUGE_SUB(flow_category_video_count);
    INFLUXD_STATS_GAUGE_SUB(flow_category_shopping_count);
    INFLUXD_STATS_GAUGE_SUB(flow_category_productivity_count);
    INFLUXD_STATS_GAUGE_SUB(flow_category_file_sharing_count);
    INFLUXD_STATS_GAUGE_SUB(flow_category_conn_check_count);
    INFLUXD_STATS_GAUGE_SUB(flow_category_iot_scada_count);
    INFLUXD_STATS_GAUGE_SUB(flow_category_virt_assistant_count);
    INFLUXD_STATS_GAUGE_SUB(flow_category_cybersecurity_count);
    INFLUXD_STATS_GAUGE_SUB(flow_category_adult_content_count);
    INFLUXD_STATS_GAUGE_SUB(flow_category_mining_count);
    INFLUXD_STATS_GAUGE_SUB(flow_category_malware_count);
    INFLUXD_STATS_GAUGE_SUB(flow_category_advertisment_count);
    INFLUXD_STATS_GAUGE_SUB(flow_category_banned_site_count);
    INFLUXD_STATS_GAUGE_SUB(flow_category_site_unavail_count);
    INFLUXD_STATS_GAUGE_SUB(flow_category_allowed_site_count);
    INFLUXD_STATS_GAUGE_SUB(flow_category_antimalware_count);
    INFLUXD_STATS_GAUGE_SUB(flow_category_crypto_currency_count);
    INFLUXD_STATS_GAUGE_SUB(flow_category_gambling_count);
    INFLUXD_STATS_GAUGE_SUB(flow_category_unknown_count);

    INFLUXD_STATS_GAUGE_SUB(flow_confidence_by_port);
    INFLUXD_STATS_GAUGE_SUB(flow_confidence_dpi_partial);
    INFLUXD_STATS_GAUGE_SUB(flow_confidence_dpi_partial_cache);
    INFLUXD_STATS_GAUGE_SUB(flow_confidence_dpi_cache);
    INFLUXD_STATS_GAUGE_SUB(flow_confidence_dpi);
    INFLUXD_STATS_GAUGE_SUB(flow_confidence_nbpf);
    INFLUXD_STATS_GAUGE_SUB(flow_confidence_by_ip);
    INFLUXD_STATS_GAUGE_SUB(flow_confidence_dpi_aggressive);
    INFLUXD_STATS_GAUGE_SUB(flow_confidence_custom_rule);
    INFLUXD_STATS_GAUGE_SUB(flow_confidence_unknown);

    INFLUXD_STATS_GAUGE_SUB(flow_severity_low);
    INFLUXD_STATS_GAUGE_SUB(flow_severity_medium);
    INFLUXD_STATS_GAUGE_SUB(flow_severity_high);
    INFLUXD_STATS_GAUGE_SUB(flow_severity_severe);
    INFLUXD_STATS_GAUGE_SUB(flow_severity_critical);
    INFLUXD_STATS_GAUGE_SUB(flow_severity_emergency);
    INFLUXD_STATS_GAUGE_SUB(flow_severity_unknown);

    INFLUXD_STATS_GAUGE_SUB(flow_l3_ip4_count);
    INFLUXD_STATS_GAUGE_SUB(flow_l3_ip6_count);
    INFLUXD_STATS_GAUGE_SUB(flow_l3_other_count);

    INFLUXD_STATS_GAUGE_SUB(flow_l4_tcp_count);
    INFLUXD_STATS_GAUGE_SUB(flow_l4_udp_count);
    INFLUXD_STATS_GAUGE_SUB(flow_l4_icmp_count);
    INFLUXD_STATS_GAUGE_SUB(flow_l4_other_count);

    INFLUXD_STATS_GAUGE_SUB(flow_active_count);
    INFLUXD_STATS_GAUGE_SUB(flow_detected_count);
    INFLUXD_STATS_GAUGE_SUB(flow_guessed_count);
    INFLUXD_STATS_GAUGE_SUB(flow_not_detected_count);

    for (size_t i = 0; i < NDPI_MAX_RISK - 1 /* NDPI_NO_RISK */; ++i)
    {
        INFLUXD_STATS_GAUGE_SUB(flow_risk_count[i]);
    }
    INFLUXD_STATS_GAUGE_SUB(flow_risk_unknown_count);

    memset(&influxd_statistics.gauges[1], 0, sizeof(influxd_statistics.gauges[1]));
    pthread_mutex_unlock(&influxd_statistics.rw_lock);

    return 0;
}

static int init_influx_ctx(struct influx_ctx * const ctx, char const * const url, char const * const api_token)
{
    char auth[128];

    ctx->http_header = curl_slist_append(ctx->http_header, "Content-Type: application/json");
    if (ctx->http_header == NULL)
    {
        return -1;
    }
    if (snprintf(auth, sizeof(auth), "Authorization: Token %s", api_token) >= (int)sizeof(auth))
    {
        return -1;
    }
    ctx->http_header = curl_slist_append(ctx->http_header, auth);
    memset(auth, '\0', sizeof(auth));
    if (ctx->http_header == NULL)
    {
        return -1;
    }

    ctx->curl = curl_easy_init();
    if (ctx->curl == NULL)
    {
        return -1;
    }

    if (curl_easy_setopt(ctx->curl, CURLOPT_URL, url) != CURLE_OK ||
        curl_easy_setopt(ctx->curl, CURLOPT_USERAGENT, "nDPIsrvd-influxd") != CURLE_OK ||
        curl_easy_setopt(ctx->curl, CURLOPT_HTTPHEADER, ctx->http_header) != CURLE_OK ||
        curl_easy_setopt(ctx->curl, CURLOPT_TIMEOUT, (long)influxdb_interval_ull) != CURLE_OK)
    {
        return -1;
    }

    return 0;
}

static void free_influx_ctx(struct influx_ctx * const ctx)
{
    curl_easy_cleanup(ctx->curl);
    curl_slist_free_all(ctx->http_header);
    ctx->curl = NULL;
    ctx->http_header = NULL;
}

static void post_influx_ctx(struct influx_ctx * const ctx)
{
    CURLcode res;
    char post_buffer[BUFSIZ];

    if (serialize_influx_line(post_buffer, sizeof(post_buffer)) != 0)
    {
        logger(1, "%s", "Could not serialize influx buffer");
        return;
    }
    curl_easy_setopt(ctx->curl, CURLOPT_POSTFIELDS, post_buffer);
    res = curl_easy_perform(ctx->curl);
    if (res != CURLE_OK)
    {
        logger(1, "curl_easy_perform() failed: %s", curl_easy_strerror(res));
        return;
    }
}

static void * send_to_influxdb(void * thread_data)
{
    struct influx_ctx influx_ctx = {};

    (void)thread_data;
    init_influx_ctx(&influx_ctx, influxdb_url, influxdb_token);
    post_influx_ctx(&influx_ctx);
    free_influx_ctx(&influx_ctx);

    return NULL;
}

static int start_influxdb_thread(void)
{
    pthread_t tid;
    pthread_attr_t att;

    if (pthread_attr_init(&att) != 0)
    {
        return 1;
    }
    if (pthread_attr_setdetachstate(&att, PTHREAD_CREATE_DETACHED) != 0)
    {
        return 1;
    }

    int error = pthread_create(&tid, &att, send_to_influxdb, NULL);
    if (0 != error)
    {
        logger(1, "Couldn't run thread, errno %d", error);
    }

    pthread_attr_destroy(&att);
    return 0;
}

static int influxd_map_to_stat(char const * const token_str,
                               size_t token_length,
                               struct global_map const * const map,
                               size_t map_length)
{
    size_t i, null_i = map_length;

    for (i = 0; i < map_length; ++i)
    {
        if (map[i].json_key == NULL)
        {
            null_i = i;
            break;
        }

        size_t key_length = strlen(map[i].json_key);
        if (key_length == token_length && strncmp(map[i].json_key, token_str, token_length) == 0)
        {
            (*map[i].global_stat_inc)++;
            return 0;
        }
    }

    if (null_i < map_length && map[null_i].global_stat_inc != NULL)
    {
        (*map[null_i].global_stat_inc)++;
        return 0;
    }

    return 1;
}

static int influxd_map_value_to_stat(struct nDPIsrvd_socket * const sock,
                                     struct nDPIsrvd_json_token const * const token,
                                     struct global_map const * const map,
                                     size_t map_length)
{
    char const * value_str = NULL;
    size_t value_length = 0;

    value_str = TOKEN_GET_VALUE(sock, token, &value_length);
    if (value_length == 0 || value_str == NULL)
    {
        return 1;
    }

    return influxd_map_to_stat(value_str, value_length, map, map_length);
}

static void influxd_unmap_flow_from_stat(struct flow_user_data * const flow_user_data)
{
    if (flow_user_data->is_ip4 != 0)
    {
        INFLUXD_STATS_GAUGE_DEC(flow_l3_ip4_count);
    }

    if (flow_user_data->is_ip6 != 0)
    {
        INFLUXD_STATS_GAUGE_DEC(flow_l3_ip6_count);
    }

    if (flow_user_data->is_other_l3 != 0)
    {
        INFLUXD_STATS_GAUGE_DEC(flow_l3_other_count);
    }

    if (flow_user_data->is_tcp != 0)
    {
        INFLUXD_STATS_GAUGE_DEC(flow_l4_tcp_count);
    }

    if (flow_user_data->is_udp != 0)
    {
        INFLUXD_STATS_GAUGE_DEC(flow_l4_udp_count);
    }

    if (flow_user_data->is_icmp != 0)
    {
        INFLUXD_STATS_GAUGE_DEC(flow_l4_icmp_count);
    }

    if (flow_user_data->is_other_l4 != 0)
    {
        INFLUXD_STATS_GAUGE_DEC(flow_l4_other_count);
    }

    if (flow_user_data->new_seen != 0)
    {
        INFLUXD_STATS_GAUGE_DEC(flow_active_count);
    }

    if (flow_user_data->is_detected != 0)
    {
        INFLUXD_STATS_GAUGE_DEC(flow_detected_count);
    }

    if (flow_user_data->is_guessed != 0)
    {
        INFLUXD_STATS_GAUGE_DEC(flow_guessed_count);
    }

    if (flow_user_data->is_not_detected != 0)
    {
        INFLUXD_STATS_GAUGE_DEC(flow_not_detected_count);
    }

    if (flow_user_data->is_info != 0)
    {
        INFLUXD_STATS_GAUGE_DEC(flow_state_info);
    }

    if (flow_user_data->is_finished != 0)
    {
        INFLUXD_STATS_GAUGE_DEC(flow_state_finished);
    }

    if (flow_user_data->breed > 0 && flow_user_data->breed_ndpid_invalid == 0 &&
        INFLUXD_STATS_MAP_NOTNULL(breeds_map, flow_user_data->breed) != 0)
    {
        INFLUXD_STATS_MAP_DEC(breeds_map, flow_user_data->breed);
    }

    if (flow_user_data->category > 0 && flow_user_data->category_ndpid_invalid == 0 &&
        INFLUXD_STATS_MAP_NOTNULL(categories_map, flow_user_data->category) != 0)
    {
        INFLUXD_STATS_MAP_DEC(categories_map, flow_user_data->category);
    }

    if (flow_user_data->confidence > 0 && flow_user_data->confidence_ndpid_invalid == 0 &&
        INFLUXD_STATS_MAP_NOTNULL(confidence_map, flow_user_data->confidence) != 0)
    {
        INFLUXD_STATS_MAP_DEC(confidence_map, flow_user_data->confidence);
    }

    for (uint8_t i = 0; i < MAX_SEVERITIES_PER_FLOW; ++i)
    {
        if (flow_user_data->severities[i] > 0)
        {
            INFLUXD_STATS_MAP_DEC(severity_map, flow_user_data->severities[i]);
        }
    }

    for (uint8_t i = 0; i < MAX_RISKS_PER_FLOW; ++i)
    {
        if (flow_user_data->risks[i] > 0)
        {
            INFLUXD_STATS_GAUGE_DEC(flow_risk_count[flow_user_data->risks[i]]);
        }
    }

    if (flow_user_data->risk_ndpid_invalid != 0)
    {
        INFLUXD_STATS_GAUGE_DEC(flow_risk_unknown_count);
    }
}

static ssize_t influxd_map_index(char const * const json_key,
                                 size_t key_length,
                                 struct global_map const * const map,
                                 size_t map_length)
{
    ssize_t unknown_key = -1;

    if (json_key == NULL || key_length == 0)
    {
        return -1;
    }

    for (size_t i = 0; i < map_length; ++i)
    {
        if (map[i].json_key == NULL)
        {
            unknown_key = i;
            continue;
        }

        if (key_length == strlen(map[i].json_key) && strncmp(json_key, map[i].json_key, key_length) == 0)
        {
            return i;
        }
    }

    return unknown_key;
}

static int influxd_map_flow_u8(struct nDPIsrvd_socket * const sock,
                               struct nDPIsrvd_json_token const * const token,
                               struct global_map const * const map,
                               size_t map_length,
                               uint8_t * const dest)
{
    if (token == NULL || dest == NULL)
    {
        return 1;
    }

    size_t len;
    char const * const str = TOKEN_GET_VALUE(sock, token, &len);
    if (str == NULL || len == 0)
    {
        return 1;
    }

    ssize_t const map_index = influxd_map_index(str, len, map, map_length);
    if (map_index < 0 || map_index > UCHAR_MAX)
    {
        return 1;
    }

    *dest = map_index + 1;
    return 0;
}

static void process_flow_stats(struct nDPIsrvd_socket * const sock, struct nDPIsrvd_flow * const flow)
{
    struct flow_user_data * flow_user_data;
    struct nDPIsrvd_json_token const * const flow_event_name = TOKEN_GET_SZ(sock, "flow_event_name");
    struct nDPIsrvd_json_token const * const flow_state = TOKEN_GET_SZ(sock, "flow_state");
    nDPIsrvd_ull total_bytes_ull[2];

    if (flow == NULL)
    {
        return;
    }
    flow_user_data = (struct flow_user_data *)flow->flow_user_data;
    if (flow_user_data == NULL)
    {
        return;
    }

    if (TOKEN_VALUE_EQUALS_SZ(sock, flow_event_name, "new") != 0)
    {
        flow_user_data->new_seen = 1;
        INFLUXD_STATS_GAUGE_INC(flow_active_count);

        struct nDPIsrvd_json_token const * const l3_proto = TOKEN_GET_SZ(sock, "l3_proto");
        if (TOKEN_VALUE_EQUALS_SZ(sock, l3_proto, "ip4") != 0)
        {
            flow_user_data->is_ip4 = 1;
            INFLUXD_STATS_GAUGE_INC(flow_l3_ip4_count);
        }
        else if (TOKEN_VALUE_EQUALS_SZ(sock, l3_proto, "ip6") != 0)
        {
            flow_user_data->is_ip6 = 1;
            INFLUXD_STATS_GAUGE_INC(flow_l3_ip6_count);
        }
        else if (l3_proto != NULL)
        {
            flow_user_data->is_other_l3 = 1;
            INFLUXD_STATS_GAUGE_INC(flow_l3_other_count);
        }

        struct nDPIsrvd_json_token const * const l4_proto = TOKEN_GET_SZ(sock, "l4_proto");
        if (TOKEN_VALUE_EQUALS_SZ(sock, l4_proto, "tcp") != 0)
        {
            flow_user_data->is_tcp = 1;
            INFLUXD_STATS_GAUGE_INC(flow_l4_tcp_count);
        }
        else if (TOKEN_VALUE_EQUALS_SZ(sock, l4_proto, "udp") != 0)
        {
            flow_user_data->is_udp = 1;
            INFLUXD_STATS_GAUGE_INC(flow_l4_udp_count);
        }
        else if (TOKEN_VALUE_EQUALS_SZ(sock, l4_proto, "icmp") != 0)
        {
            flow_user_data->is_icmp = 1;
            INFLUXD_STATS_GAUGE_INC(flow_l4_icmp_count);
        }
        else if (l4_proto != NULL)
        {
            flow_user_data->is_other_l4 = 1;
            INFLUXD_STATS_GAUGE_INC(flow_l4_other_count);
        }
    }
    else if (flow_user_data->new_seen == 0)
    {
        return;
    }

    if (TOKEN_VALUE_EQUALS_SZ(sock, flow_event_name, "not-detected") != 0)
    {
        flow_user_data->is_not_detected = 1;
        INFLUXD_STATS_GAUGE_INC(flow_not_detected_count);
    }
    else if (TOKEN_VALUE_EQUALS_SZ(sock, flow_event_name, "guessed") != 0)
    {
        flow_user_data->is_guessed = 1;
        INFLUXD_STATS_GAUGE_INC(flow_guessed_count);
    }
    else if (TOKEN_VALUE_EQUALS_SZ(sock, flow_event_name, "detected") != 0 ||
             TOKEN_VALUE_EQUALS_SZ(sock, flow_event_name, "detection-update") != 0)
    {
        struct nDPIsrvd_json_token const * const flow_risk = TOKEN_GET_SZ(sock, "ndpi", "flow_risk");
        struct nDPIsrvd_json_token const * current = NULL;
        int next_child_index = -1;

        if (flow_user_data->is_detected == 0)
        {
            flow_user_data->is_detected = 1;
            INFLUXD_STATS_GAUGE_INC(flow_detected_count);
        }

        if (flow_risk != NULL)
        {
            if (flow_user_data->risks[0] == 0)
            {
                INFLUXD_STATS_COUNTER_INC(flow_risky_count);
            }

            while ((current = nDPIsrvd_get_next_token(sock, flow_risk, &next_child_index)) != NULL)
            {
                size_t numeric_risk_len = 0;
                char const * const numeric_risk_str = TOKEN_GET_KEY(sock, current, &numeric_risk_len);
                nDPIsrvd_ull numeric_risk_value = 0;
                char numeric_risk_buf[numeric_risk_len + 1];

                if (numeric_risk_len > 0 && numeric_risk_str != NULL)
                {
                    strncpy(numeric_risk_buf, numeric_risk_str, numeric_risk_len);
                    numeric_risk_buf[numeric_risk_len] = '\0';

                    struct nDPIsrvd_json_token const * const severity =
                        TOKEN_GET_SZ(sock, "ndpi", "flow_risk", numeric_risk_buf, "severity");
                    uint8_t severity_index;

                    if (influxd_map_flow_u8(
                            sock, severity, severity_map, nDPIsrvd_ARRAY_LENGTH(severity_map), &severity_index) != 0)
                    {
                        severity_index = 0;
                    }

                    if (severity_index != 0)
                    {
                        for (uint8_t i = 0; i < MAX_SEVERITIES_PER_FLOW; ++i)
                        {
                            if (flow_user_data->severities[i] != 0)
                            {
                                continue;
                            }
                            if (flow_user_data->severities[i] == severity_index)
                            {
                                break;
                            }

                            if (influxd_map_value_to_stat(
                                    sock, severity, severity_map, nDPIsrvd_ARRAY_LENGTH(severity_map)) != 0)
                            {
                                severity_index = 0;
                                break;
                            }
                            flow_user_data->severities[i] = severity_index;
                            break;
                        }
                    }
                    if (severity_index == 0)
                    {
                        size_t value_len = 0;
                        char const * const value_str = TOKEN_GET_VALUE(sock, severity, &value_len);

                        if (value_len > 0 && value_str != NULL)
                        {
                            logger(1,
                                   "Unknown/Invalid JSON value for key 'ndpi','breed': %.*s",
                                   (int)value_len,
                                   value_str);
                        }
                    }

                    if (str_value_to_ull(numeric_risk_str, &numeric_risk_value) == CONVERSION_OK)
                    {
                        if (numeric_risk_value < NDPI_MAX_RISK && numeric_risk_value > 0)
                        {
                            for (uint8_t i = 0; i < MAX_RISKS_PER_FLOW; ++i)
                            {
                                if (flow_user_data->risks[i] != 0)
                                {
                                    continue;
                                }
                                if (flow_user_data->risks[i] == numeric_risk_value - 1)
                                {
                                    break;
                                }

                                INFLUXD_STATS_GAUGE_INC(flow_risk_count[numeric_risk_value - 1]);
                                flow_user_data->risks[i] = numeric_risk_value - 1;
                                break;
                            }
                        }
                        else if (flow_user_data->risk_ndpid_invalid == 0)
                        {
                            flow_user_data->risk_ndpid_invalid = 1;
                            INFLUXD_STATS_GAUGE_INC(flow_risk_unknown_count);
                        }
                    }
                    else
                    {
                        logger(1, "Invalid numeric risk value: %s", numeric_risk_buf);
                    }
                }
                else
                {
                    logger(1, "%s", "Missing numeric risk value");
                }
            }
        }

        if (flow_user_data->breed == 0 && flow_user_data->breed_ndpid_invalid == 0)
        {
            struct nDPIsrvd_json_token const * const breed = TOKEN_GET_SZ(sock, "ndpi", "breed");
            if (influxd_map_flow_u8(
                    sock, breed, breeds_map, nDPIsrvd_ARRAY_LENGTH(breeds_map), &flow_user_data->breed) != 0 ||
                influxd_map_value_to_stat(sock, breed, breeds_map, nDPIsrvd_ARRAY_LENGTH(breeds_map)) != 0)
            {
                size_t value_len = 0;
                char const * const value_str = TOKEN_GET_VALUE(sock, breed, &value_len);

                flow_user_data->breed = 0;
                flow_user_data->breed_ndpid_invalid = 1;
                if (value_len > 0 && value_str != NULL)
                {
                    logger(1, "Unknown/Invalid JSON value for key 'ndpi','breed': %.*s", (int)value_len, value_str);
                }
            }
        }

        if (flow_user_data->category == 0 && flow_user_data->category_ndpid_invalid == 0)
        {
            struct nDPIsrvd_json_token const * const category = TOKEN_GET_SZ(sock, "ndpi", "category");
            if (influxd_map_flow_u8(
                    sock, category, categories_map, nDPIsrvd_ARRAY_LENGTH(categories_map), &flow_user_data->category) !=
                    0 ||
                influxd_map_value_to_stat(sock, category, categories_map, nDPIsrvd_ARRAY_LENGTH(categories_map)) != 0)
            {
                size_t value_len = 0;
                char const * const value_str = TOKEN_GET_VALUE(sock, category, &value_len);

                flow_user_data->category = 0;
                flow_user_data->category_ndpid_invalid = 1;
                if (value_len > 0 && value_str != NULL)
                {
                    logger(1, "Unknown/Invalid JSON value for key 'ndpi','category': %.*s", (int)value_len, value_str);
                }
            }
        }

        if (flow_user_data->confidence == 0 && flow_user_data->confidence_ndpid_invalid == 0)
        {
            struct nDPIsrvd_json_token const * const token = TOKEN_GET_SZ(sock, "ndpi", "confidence");
            struct nDPIsrvd_json_token const * current = NULL;
            int next_child_index = -1;

            if ((current = nDPIsrvd_get_next_token(sock, token, &next_child_index)) == NULL)
            {
                flow_user_data->confidence_ndpid_invalid = 1;
            }
            else if (nDPIsrvd_get_next_token(sock, token, &next_child_index) == NULL)
            {
                if (influxd_map_flow_u8(sock,
                                        current,
                                        confidence_map,
                                        nDPIsrvd_ARRAY_LENGTH(confidence_map),
                                        &flow_user_data->confidence) != 0 ||
                    influxd_map_value_to_stat(sock, current, confidence_map, nDPIsrvd_ARRAY_LENGTH(confidence_map)) !=
                        0)
                {
                    flow_user_data->confidence = 0;
                    flow_user_data->confidence_ndpid_invalid = 1;
                }
            }
            else
            {
                flow_user_data->confidence_ndpid_invalid = 1;
            }

            if (flow_user_data->confidence_ndpid_invalid != 0)
            {
                size_t value_len = 0;
                char const * const value_str = TOKEN_GET_VALUE(sock, current, &value_len);

                logger(1, "Unknown/Invalid JSON value for key 'ndpi','confidence': %.*s", (int)value_len, value_str);
            }
        }
    }

    if (TOKEN_VALUE_EQUALS_SZ(sock, flow_state, "info") != 0)
    {
        if (flow_user_data->is_info == 0)
        {
            flow_user_data->is_info = 1;
            INFLUXD_STATS_GAUGE_INC(flow_state_info);
        }
    }
    else if (TOKEN_VALUE_EQUALS_SZ(sock, flow_state, "finished") != 0)
    {
        if (flow_user_data->is_finished == 0)
        {
            if (flow_user_data->is_info != 0)
            {
                flow_user_data->is_info = 0;
                INFLUXD_STATS_GAUGE_RES(flow_state_info);
            }
            flow_user_data->is_finished = 1;
            INFLUXD_STATS_GAUGE_INC(flow_state_finished);
        }
    }

    if (TOKEN_VALUE_TO_ULL(sock, TOKEN_GET_SZ(sock, "flow_src_tot_l4_payload_len"), &total_bytes_ull[0]) ==
            CONVERSION_OK &&
        TOKEN_VALUE_TO_ULL(sock, TOKEN_GET_SZ(sock, "flow_dst_tot_l4_payload_len"), &total_bytes_ull[1]) ==
            CONVERSION_OK)
    {
        influxd_statistics.counters.flow_src_total_bytes +=
            total_bytes_ull[0] - flow_user_data->last_flow_src_l4_payload_len;
        influxd_statistics.counters.flow_dst_total_bytes +=
            total_bytes_ull[1] - flow_user_data->last_flow_dst_l4_payload_len;

        flow_user_data->last_flow_src_l4_payload_len = total_bytes_ull[0];
        flow_user_data->last_flow_dst_l4_payload_len = total_bytes_ull[1];
    }

    if (TOKEN_VALUE_EQUALS_SZ(sock, flow_event_name, "end") != 0 ||
        TOKEN_VALUE_EQUALS_SZ(sock, flow_event_name, "idle") != 0)
    {
        influxd_unmap_flow_from_stat(flow_user_data);
    }
}

static enum nDPIsrvd_callback_return influxd_json_callback(struct nDPIsrvd_socket * const sock,
                                                           struct nDPIsrvd_instance * const instance,
                                                           struct nDPIsrvd_thread_data * const thread_data,
                                                           struct nDPIsrvd_flow * const flow)
{
    (void)instance;
    (void)thread_data;

    struct nDPIsrvd_json_token const * const flow_event = TOKEN_GET_SZ(sock, "flow_event_name");
    struct nDPIsrvd_json_token const * const packet_event = TOKEN_GET_SZ(sock, "packet_event_name");
    struct nDPIsrvd_json_token const * const daemon_event = TOKEN_GET_SZ(sock, "daemon_event_name");
    struct nDPIsrvd_json_token const * const error_event = TOKEN_GET_SZ(sock, "error_event_name");

    pthread_mutex_lock(&influxd_statistics.rw_lock);

    INFLUXD_STATS_COUNTER_INC(json_lines);
    influxd_statistics.counters.json_bytes += sock->buffer.json_message_length + NETWORK_BUFFER_LENGTH_DIGITS;

    process_flow_stats(sock, flow);

    if (flow_event != NULL &&
        influxd_map_value_to_stat(sock, flow_event, flow_event_map, nDPIsrvd_ARRAY_LENGTH(flow_event_map)) != 0)
    {
        logger(1, "%s", "Unknown flow_event_name");
    }

    if (packet_event != NULL &&
        influxd_map_value_to_stat(sock, packet_event, packet_event_map, nDPIsrvd_ARRAY_LENGTH(packet_event_map)) != 0)
    {
        logger(1, "%s", "Unknown packet_event_name");
    }

    if (daemon_event != NULL &&
        influxd_map_value_to_stat(sock, daemon_event, daemon_event_map, nDPIsrvd_ARRAY_LENGTH(daemon_event_map)) != 0)
    {
        logger(1, "%s", "Unknown daemon_event_name");
    }

    if (error_event != NULL &&
        influxd_map_value_to_stat(sock, error_event, error_event_map, nDPIsrvd_ARRAY_LENGTH(error_event_map)) != 0)
    {
        logger(1, "%s", "Unknown error_event_name");
    }

    pthread_mutex_unlock(&influxd_statistics.rw_lock);
    return CALLBACK_OK;
}

static int set_influxd_timer(void)
{
    const time_t interval = influxdb_interval_ull * 1000;
    struct itimerspec its;
    its.it_value.tv_sec = interval / 1000;
    its.it_value.tv_nsec = (interval % 1000) * 1000000;
    its.it_interval.tv_nsec = 0;
    its.it_interval.tv_sec = 0;

    errno = 0;
    return timerfd_settime(influxd_timerfd, 0, &its, NULL);
}

static int create_influxd_timer(void)
{
    influxd_timerfd = timerfd_create(CLOCK_MONOTONIC, TFD_NONBLOCK);
    if (influxd_timerfd < 0)
    {
        return 1;
    }

    return set_influxd_timer();
}

static int mainloop(int epollfd, struct nDPIsrvd_socket * const sock)
{
    struct epoll_event events[32];
    size_t const events_size = sizeof(events) / sizeof(events[0]);

    while (main_thread_shutdown == 0)
    {
        int nready = epoll_wait(epollfd, events, events_size, -1);

        for (int i = 0; i < nready; i++)
        {
            if (events[i].events & EPOLLERR)
            {
                logger(1, "Epoll event error: %s", (errno != 0 ? strerror(errno) : "EPOLLERR"));
                break;
            }

            if (events[i].data.fd == influxd_timerfd)
            {
                uint64_t expirations;

                errno = 0;
                if (read(influxd_timerfd, &expirations, sizeof(expirations)) != sizeof(expirations))
                {
                    logger(1, "Could not read timer expirations: %s", strerror(errno));
                    return 1;
                }
                if (set_influxd_timer() != 0)
                {
                    logger(1, "Could not set timer: %s", strerror(errno));
                    return 1;
                }

                if (test_mode == 0)
                {
                    start_influxdb_thread();
                }
                else
                {
                    char stdout_buffer[BUFSIZ];

                    if (serialize_influx_line(stdout_buffer, sizeof(stdout_buffer)) != 0)
                    {
                        logger(1, "%s", "Could not serialize influx buffer");
                        return 1;
                    }
                    printf("%s", stdout_buffer);
                }
            }
            else if (events[i].data.fd == sock->fd)
            {
                errno = 0;
                enum nDPIsrvd_read_return read_ret = nDPIsrvd_read(sock);
                if (read_ret != READ_OK)
                {
                    logger(1, "nDPIsrvd read failed with: %s", nDPIsrvd_enum_to_string(read_ret));
                    return 1;
                }

                enum nDPIsrvd_parse_return parse_ret = nDPIsrvd_parse_all(sock);
                if (parse_ret != PARSE_NEED_MORE_DATA)
                {
                    logger(1, "nDPIsrvd parse failed with: %s", nDPIsrvd_enum_to_string(parse_ret));
                    return 1;
                }
            }
        }
    }

    return 0;
}

static int parse_options(int argc, char ** argv, struct nDPIsrvd_socket * const sock)
{
    int opt;

    static char const usage[] =
        "Usage: %s "
        "[-c] [-d] [-p pidfile] [-s host] [-u user] [-g group]\n"
        "\t  \t[-i interval] [-U URL] [-T token]\n\n"
        "\t-c\tLog to console instead of syslog.\n"
        "\t-d\tForking into background after initialization.\n"
        "\t-p\tWrite the daemon PID to the given file path.\n"
        "\t-s\tDestination where nDPIsrvd is listening on.\n"
        "\t-u\tChange user.\n"
        "\t-g\tChange group.\n"
        "\t-i\tInterval between pushing statistics to an influxdb endpoint.\n"
        "\t-t\tTest mode: Ignores `-U' / `-T' and prints stats to stdout.\n"
        "\t-U\tInfluxDB URL.\n"
        "\t  \tExample: http://127.0.0.1:8086/write?db=ndpi-daemon\n"
        "\t-T\tInfluxDB access token.\n"
        "\t  \tNot recommended, use environment variable INFLUXDB_AUTH_TOKEN instead.\n";

    while ((opt = getopt(argc, argv, "hcdp:s:u:g:i:tU:T:")) != -1)
    {
        switch (opt)
        {
            case 'c':
                enable_console_logger();
                break;
            case 'd':
                daemonize_enable();
                break;
            case 'p':
                free(pidfile);
                pidfile = strdup(optarg);
                break;
            case 's':
                free(serv_optarg);
                serv_optarg = strdup(optarg);
                break;
            case 'u':
                free(user);
                user = strdup(optarg);
                break;
            case 'g':
                free(group);
                group = strdup(optarg);
                break;
            case 'i':
                free(influxdb_interval);
                influxdb_interval = strdup(optarg);
                break;
            case 't':
                test_mode = 1;
                break;
            case 'U':
                free(influxdb_url);
                influxdb_url = strdup(optarg);
                break;
            case 'T':
                free(influxdb_token);
                influxdb_token = strdup(optarg);
                break;
            default:
                fprintf(stderr, usage, argv[0]);
                return 1;
        }
    }

    if (test_mode != 0)
    {
        logger_early(1, "%s", "Test mode enabled: ignoring `-U' / `-T' command line parameters");
        free(influxdb_url);
        free(influxdb_token);
        influxdb_url = NULL;
        influxdb_token = NULL;
    }

    if (serv_optarg == NULL)
    {
        serv_optarg = strdup(DISTRIBUTOR_UNIX_SOCKET);
    }

    if (influxdb_interval == NULL)
    {
        influxdb_interval = strdup("60");
    }

    if (str_value_to_ull(influxdb_interval, &influxdb_interval_ull) != CONVERSION_OK)
    {
        logger_early(1, "InfluxDB push interval `%s' is not a valid number", influxdb_interval);
        return 1;
    }

    if (test_mode == 0)
    {
        if (influxdb_url == NULL)
        {
            logger_early(1, "%s", "Missing InfluxDB URL.");
            return 1;
        }

        if (influxdb_token == NULL && getenv("INFLUXDB_AUTH_TOKEN") != NULL)
        {
            influxdb_token = strdup(getenv("INFLUXDB_AUTH_TOKEN"));
        }
        if (influxdb_token == NULL)
        {
            logger_early(1, "%s", "Missing InfluxDB authentication token.");
            return 1;
        }
    }

    if (nDPIsrvd_setup_address(&sock->address, serv_optarg) != 0)
    {
        logger_early(1, "Could not parse address `%s'", serv_optarg);
        return 1;
    }

    if (optind < argc)
    {
        logger_early(1, "%s", "Unexpected argument after options");
        logger_early(1, "%s", "");
        logger_early(1, usage, argv[0]);
        return 1;
    }

    return 0;
}

static void sighandler(int signum)
{
    logger(0, "Received SIGNAL %d", signum);

    if (main_thread_shutdown == 0)
    {
        logger(0, "%s", "Shutting down ..");
        main_thread_shutdown = 1;
    }
}

int main(int argc, char ** argv)
{
    int retval = 1, epollfd = -1;

    init_logging("nDPIsrvd-influxd");

    struct nDPIsrvd_socket * sock =
        nDPIsrvd_socket_init(0, 0, 0, sizeof(struct flow_user_data), influxd_json_callback, NULL, NULL);
    if (sock == NULL)
    {
        logger_early(1, "%s", "nDPIsrvd socket memory allocation failed!");
        goto failure;
    }

    if (parse_options(argc, argv, sock) != 0)
    {
        goto failure;
    }

    logger_early(0, "Recv buffer size: %u", NETWORK_BUFFER_MAX_SIZE);
    logger_early(0, "Connecting to `%s'..", serv_optarg);
    logger_early(0, "InfluxDB push URL: %s", influxdb_url);

    if (setvbuf(stdout, NULL, _IONBF, 0) != 0)
    {
        logger_early(1,
                     "Could not set stdout unbuffered: %s. Collectd may receive too old PUTVALs and complain.",
                     strerror(errno));
    }

    if (nDPIsrvd_connect(sock) != CONNECT_OK)
    {
        logger_early(1, "nDPIsrvd socket connect to %s failed!", serv_optarg);
        goto failure;
    }

    if (nDPIsrvd_set_nonblock(sock) != 0)
    {
        logger_early(1, "nDPIsrvd set nonblock failed: %s", strerror(errno));
        goto failure;
    }

    signal(SIGINT, sighandler);
    signal(SIGTERM, sighandler);
    signal(SIGPIPE, SIG_IGN);

    if (daemonize_with_pidfile(pidfile) != 0)
    {
        goto failure;
    }

    errno = 0;
    if (user != NULL && change_user_group(user, group, pidfile) != 0)
    {
        if (errno != 0)
        {
            logger_early(1, "Change user/group failed: %s", strerror(errno));
        }
        else
        {
            logger_early(1, "%s", "Change user/group failed.");
        }
        goto failure;
    }

    epollfd = epoll_create1(0);
    if (epollfd < 0)
    {
        logger_early(1, "Error creating epoll: %s", strerror(errno));
        goto failure;
    }

    if (create_influxd_timer() != 0)
    {
        logger_early(1, "Error creating timer: %s", strerror(errno));
        goto failure;
    }

    {
        struct epoll_event timer_event = {.data.fd = influxd_timerfd, .events = EPOLLIN};
        if (epoll_ctl(epollfd, EPOLL_CTL_ADD, influxd_timerfd, &timer_event) < 0)
        {
            logger_early(1, "Error adding JSON fd to epoll: %s", strerror(errno));
            goto failure;
        }
    }

    {
        struct epoll_event socket_event = {.data.fd = sock->fd, .events = EPOLLIN};
        if (epoll_ctl(epollfd, EPOLL_CTL_ADD, sock->fd, &socket_event) < 0)
        {
            logger_early(1, "Error adding nDPIsrvd socket fd to epoll: %s", strerror(errno));
            goto failure;
        }
    }

    if (test_mode == 0)
    {
        curl_global_init(CURL_GLOBAL_ALL);
    }

    logger_early(0, "%s", "Initialization succeeded.");
    retval = mainloop(epollfd, sock);
    logger_early(0, "%s", "Bye.");

    if (test_mode == 0)
    {
        curl_global_cleanup();
    }
    else
    {
        char stdout_buffer[BUFSIZ];

        if (serialize_influx_line(stdout_buffer, sizeof(stdout_buffer)) != 0)
        {
            logger(1, "%s", "Could not serialize influx buffer");
            return 1;
        }
        printf("%s", stdout_buffer);
    }
failure:
    nDPIsrvd_socket_free(&sock);
    close(influxd_timerfd);
    close(epollfd);
    daemonize_shutdown(pidfile);
    shutdown_logging();

    return retval;
}