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Diffstat (limited to 'examples/c-collectd/c-collectd.c')
-rw-r--r-- | examples/c-collectd/c-collectd.c | 1588 |
1 files changed, 1588 insertions, 0 deletions
diff --git a/examples/c-collectd/c-collectd.c b/examples/c-collectd/c-collectd.c new file mode 100644 index 000000000..7d7d65244 --- /dev/null +++ b/examples/c-collectd/c-collectd.c @@ -0,0 +1,1588 @@ +#include <arpa/inet.h> // ndpi_typedefs.h +#include <errno.h> +#include <signal.h> +#include <stdbool.h> // ndpi_typedefs.h +#include <stdio.h> +#include <stdlib.h> +#include <string.h> +#include <sys/epoll.h> +#include <sys/timerfd.h> +#include <unistd.h> + +#include <ndpi_typedefs.h> + +#include "nDPIsrvd.h" +#include "utils.h" + +#define DEFAULT_COLLECTD_EXEC_INST "nDPIsrvd" +#define MAX_RISKS_PER_FLOW 8 +#define MAX_SEVERITIES_PER_FLOW 4 +#define LOGGER_EARLY(is_error, fmt, ...) \ + do \ + { \ + if (enable_console_logging != 0) \ + { \ + logger_early(is_error, fmt, __VA_ARGS__); \ + } \ + else \ + { \ + logger(is_error, fmt, __VA_ARGS__); \ + } \ + } while (0) +//#define GENERATE_TIMESTAMP 1 + +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; +}; + +static int main_thread_shutdown = 0; +static int collectd_timerfd = -1; +static pid_t collectd_pid; + +static int enable_console_logging = 0; +static char * serv_optarg = NULL; +static char * collectd_hostname = NULL; +static char * collectd_interval = NULL; +static char * instance_name = NULL; +static nDPIsrvd_ull collectd_interval_ull = 0uL; + +static struct +{ + 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 */ +} collectd_statistics = {}; + +struct global_map +{ + char const * const json_key; + struct + { + uint64_t * const global_stat_inc; + uint64_t * const global_stat_dec; + }; +}; + +#define COLLECTD_STATS_COUNTER_PTR(member) \ + { \ + .global_stat_inc = &(collectd_statistics.counters.member), NULL \ + } +#define COLLECTD_STATS_GAUGE_PTR(member) \ + { \ + .global_stat_inc = &(collectd_statistics.gauges[0].member), \ + .global_stat_dec = &(collectd_statistics.gauges[1].member) \ + } +#define COLLECTD_STATS_COUNTER_INC(member) (collectd_statistics.counters.member++) +#define COLLECTD_STATS_GAUGE_RES(member) (collectd_statistics.gauges[0].member--) +#define COLLECTD_STATS_GAUGE_INC(member) (collectd_statistics.gauges[0].member++) +#define COLLECTD_STATS_GAUGE_DEC(member) (collectd_statistics.gauges[1].member++) +#define COLLECTD_STATS_GAUGE_SUB(member) (collectd_statistics.gauges[0].member -= collectd_statistics.gauges[1].member) +#define COLLECTD_STATS_MAP_NOTNULL(map, index) (map[index - 1].global_stat_dec != NULL) +#define COLLECTD_STATS_MAP_DEC(map, index) ((*map[index - 1].global_stat_dec)++) + +static struct global_map const flow_event_map[] = {{"new", COLLECTD_STATS_COUNTER_PTR(flow_new_count)}, + {"end", COLLECTD_STATS_COUNTER_PTR(flow_end_count)}, + {"idle", COLLECTD_STATS_COUNTER_PTR(flow_idle_count)}, + {"update", COLLECTD_STATS_COUNTER_PTR(flow_update_count)}, + {"analyse", COLLECTD_STATS_COUNTER_PTR(flow_analyse_count)}, + {"guessed", COLLECTD_STATS_COUNTER_PTR(flow_guessed_count)}, + {"detected", COLLECTD_STATS_COUNTER_PTR(flow_detected_count)}, + {"detection-update", + COLLECTD_STATS_COUNTER_PTR(flow_detection_update_count)}, + {"not-detected", + COLLECTD_STATS_COUNTER_PTR(flow_not_detected_count)}}; + +static struct global_map const packet_event_map[] = {{"packet", COLLECTD_STATS_COUNTER_PTR(packet_count)}, + {"packet-flow", COLLECTD_STATS_COUNTER_PTR(packet_flow_count)}}; + +static struct global_map const daemon_event_map[] = {{"init", COLLECTD_STATS_COUNTER_PTR(init_count)}, + {"reconnect", COLLECTD_STATS_COUNTER_PTR(reconnect_count)}, + {"shutdown", COLLECTD_STATS_COUNTER_PTR(shutdown_count)}, + {"status", COLLECTD_STATS_COUNTER_PTR(status_count)}}; + +static struct global_map const error_event_map[] = { + {"Unknown datalink layer packet", COLLECTD_STATS_COUNTER_PTR(error_unknown_datalink)}, + {"Unknown L3 protocol", COLLECTD_STATS_COUNTER_PTR(error_unknown_l3_protocol)}, + {"Unsupported datalink layer", COLLECTD_STATS_COUNTER_PTR(error_unsupported_datalink)}, + {"Packet too short", COLLECTD_STATS_COUNTER_PTR(error_packet_too_short)}, + {"Unknown packet type", COLLECTD_STATS_COUNTER_PTR(error_packet_type_unknown)}, + {"Packet header invalid", COLLECTD_STATS_COUNTER_PTR(error_packet_header_invalid)}, + {"IP4 packet too short", COLLECTD_STATS_COUNTER_PTR(error_ip4_packet_too_short)}, + {"Packet smaller than IP4 header", COLLECTD_STATS_COUNTER_PTR(error_ip4_size_smaller_than_header)}, + {"nDPI IPv4\\/L4 payload detection failed", COLLECTD_STATS_COUNTER_PTR(error_ip4_l4_payload_detection)}, + {"IP6 packet too short", COLLECTD_STATS_COUNTER_PTR(error_ip6_packet_too_short)}, + {"Packet smaller than IP6 header", COLLECTD_STATS_COUNTER_PTR(error_ip6_size_smaller_than_header)}, + {"nDPI IPv6\\/L4 payload detection failed", COLLECTD_STATS_COUNTER_PTR(error_ip6_l4_payload_detection)}, + {"TCP packet smaller than expected", COLLECTD_STATS_COUNTER_PTR(error_tcp_packet_too_short)}, + {"UDP packet smaller than expected", COLLECTD_STATS_COUNTER_PTR(error_udp_packet_too_short)}, + {"Captured packet size is smaller than expected packet size", + COLLECTD_STATS_COUNTER_PTR(error_capture_size_smaller_than_packet)}, + {"Max flows to track reached", COLLECTD_STATS_COUNTER_PTR(error_max_flows_to_track)}, + {"Flow memory allocation failed", COLLECTD_STATS_COUNTER_PTR(error_flow_memory_alloc)}}; + +static struct global_map const breeds_map[] = {{"Safe", COLLECTD_STATS_GAUGE_PTR(flow_breed_safe_count)}, + {"Acceptable", COLLECTD_STATS_GAUGE_PTR(flow_breed_acceptable_count)}, + {"Fun", COLLECTD_STATS_GAUGE_PTR(flow_breed_fun_count)}, + {"Unsafe", COLLECTD_STATS_GAUGE_PTR(flow_breed_unsafe_count)}, + {"Potentially Dangerous", + COLLECTD_STATS_GAUGE_PTR(flow_breed_potentially_dangerous_count)}, + {"Tracker\\/Ads", + COLLECTD_STATS_GAUGE_PTR(flow_breed_tracker_ads_count)}, + {"Dangerous", COLLECTD_STATS_GAUGE_PTR(flow_breed_dangerous_count)}, + {"Unrated", COLLECTD_STATS_GAUGE_PTR(flow_breed_unrated_count)}, + {NULL, COLLECTD_STATS_GAUGE_PTR(flow_breed_unknown_count)}}; + +static struct global_map const categories_map[] = { + {"Unspecified", COLLECTD_STATS_GAUGE_PTR(flow_category_unspecified_count)}, + {"Media", COLLECTD_STATS_GAUGE_PTR(flow_category_media_count)}, + {"VPN", COLLECTD_STATS_GAUGE_PTR(flow_category_vpn_count)}, + {"Email", COLLECTD_STATS_GAUGE_PTR(flow_category_email_count)}, + {"DataTransfer", COLLECTD_STATS_GAUGE_PTR(flow_category_data_transfer_count)}, + {"Web", COLLECTD_STATS_GAUGE_PTR(flow_category_web_count)}, + {"SocialNetwork", COLLECTD_STATS_GAUGE_PTR(flow_category_social_network_count)}, + {"Download", COLLECTD_STATS_GAUGE_PTR(flow_category_download_count)}, + {"Game", COLLECTD_STATS_GAUGE_PTR(flow_category_game_count)}, + {"Chat", COLLECTD_STATS_GAUGE_PTR(flow_category_chat_count)}, + {"VoIP", COLLECTD_STATS_GAUGE_PTR(flow_category_voip_count)}, + {"Database", COLLECTD_STATS_GAUGE_PTR(flow_category_database_count)}, + {"RemoteAccess", COLLECTD_STATS_GAUGE_PTR(flow_category_remote_access_count)}, + {"Cloud", COLLECTD_STATS_GAUGE_PTR(flow_category_cloud_count)}, + {"Network", COLLECTD_STATS_GAUGE_PTR(flow_category_network_count)}, + {"Collaborative", COLLECTD_STATS_GAUGE_PTR(flow_category_collaborative_count)}, + {"RPC", COLLECTD_STATS_GAUGE_PTR(flow_category_rpc_count)}, + {"Streaming", COLLECTD_STATS_GAUGE_PTR(flow_category_streaming_count)}, + {"System", COLLECTD_STATS_GAUGE_PTR(flow_category_system_count)}, + {"SoftwareUpdate", COLLECTD_STATS_GAUGE_PTR(flow_category_software_update_count)}, + {"Music", COLLECTD_STATS_GAUGE_PTR(flow_category_music_count)}, + {"Video", COLLECTD_STATS_GAUGE_PTR(flow_category_video_count)}, + {"Shopping", COLLECTD_STATS_GAUGE_PTR(flow_category_shopping_count)}, + {"Productivity", COLLECTD_STATS_GAUGE_PTR(flow_category_productivity_count)}, + {"FileSharing", COLLECTD_STATS_GAUGE_PTR(flow_category_file_sharing_count)}, + {"ConnCheck", COLLECTD_STATS_GAUGE_PTR(flow_category_conn_check_count)}, + {"IoT-Scada", COLLECTD_STATS_GAUGE_PTR(flow_category_iot_scada_count)}, + {"VirtAssistant", COLLECTD_STATS_GAUGE_PTR(flow_category_virt_assistant_count)}, + {"Cybersecurity", COLLECTD_STATS_GAUGE_PTR(flow_category_cybersecurity_count)}, + {"AdultContent", COLLECTD_STATS_GAUGE_PTR(flow_category_adult_content_count)}, + {"Mining", COLLECTD_STATS_GAUGE_PTR(flow_category_mining_count)}, + {"Malware", COLLECTD_STATS_GAUGE_PTR(flow_category_malware_count)}, + {"Advertisement", COLLECTD_STATS_GAUGE_PTR(flow_category_advertisment_count)}, + {"Banned_Site", COLLECTD_STATS_GAUGE_PTR(flow_category_banned_site_count)}, + {"Site_Unavailable", COLLECTD_STATS_GAUGE_PTR(flow_category_site_unavail_count)}, + {"Allowed_Site", COLLECTD_STATS_GAUGE_PTR(flow_category_allowed_site_count)}, + {"Antimalware", COLLECTD_STATS_GAUGE_PTR(flow_category_antimalware_count)}, + {"Crypto_Currency", COLLECTD_STATS_GAUGE_PTR(flow_category_crypto_currency_count)}, + {"Gambling", COLLECTD_STATS_GAUGE_PTR(flow_category_gambling_count)}, + {NULL, COLLECTD_STATS_GAUGE_PTR(flow_category_unknown_count)}}; + +static struct global_map const confidence_map[] = { + {"Match by port", COLLECTD_STATS_GAUGE_PTR(flow_confidence_by_port)}, + {"DPI (partial)", COLLECTD_STATS_GAUGE_PTR(flow_confidence_dpi_partial)}, + {"DPI (partial cache)", COLLECTD_STATS_GAUGE_PTR(flow_confidence_dpi_partial_cache)}, + {"DPI (cache)", COLLECTD_STATS_GAUGE_PTR(flow_confidence_dpi_cache)}, + {"DPI", COLLECTD_STATS_GAUGE_PTR(flow_confidence_dpi)}, + {"nBPF", COLLECTD_STATS_GAUGE_PTR(flow_confidence_nbpf)}, + {"Match by IP", COLLECTD_STATS_GAUGE_PTR(flow_confidence_by_ip)}, + {"DPI (aggressive)", COLLECTD_STATS_GAUGE_PTR(flow_confidence_dpi_aggressive)}, + {"Match by custom rule", COLLECTD_STATS_GAUGE_PTR(flow_confidence_custom_rule)}, + {NULL, COLLECTD_STATS_GAUGE_PTR(flow_confidence_unknown)}}; + +static struct global_map const severity_map[] = {{"Low", COLLECTD_STATS_GAUGE_PTR(flow_severity_low)}, + {"Medium", COLLECTD_STATS_GAUGE_PTR(flow_severity_medium)}, + {"High", COLLECTD_STATS_GAUGE_PTR(flow_severity_high)}, + {"Severe", COLLECTD_STATS_GAUGE_PTR(flow_severity_severe)}, + {"Critical", COLLECTD_STATS_GAUGE_PTR(flow_severity_critical)}, + {"Emergency", COLLECTD_STATS_GAUGE_PTR(flow_severity_emergency)}, + {NULL, COLLECTD_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 + +static int set_collectd_timer(void) +{ + const time_t interval = collectd_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(collectd_timerfd, 0, &its, NULL); +} + +static int create_collectd_timer(void) +{ + collectd_timerfd = timerfd_create(CLOCK_MONOTONIC, TFD_NONBLOCK); + if (collectd_timerfd < 0) + { + return 1; + } + + return set_collectd_timer(); +} + +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; + } +} + +static int parse_options(int argc, char ** argv, struct nDPIsrvd_socket * const sock) +{ + int opt; + + static char const usage[] = + "Usage: %s " + "[-l] [-s host] [-c hostname] [-n collectd-instance-name] [-i interval]\n\n" + "\t-l\tLog to console instead of syslog.\n" + "\t-s\tDestination where nDPIsrvd is listening on.\n" + "\t-c\tCollectd hostname.\n" + "\t \tThis value defaults to the environment variable COLLECTD_HOSTNAME.\n" + "\t-n\tName of the collectd(-exec) instance.\n" + "\t \tDefaults to: " DEFAULT_COLLECTD_EXEC_INST + "\n" + "\t-i\tInterval between print statistics to stdout.\n" + "\t \tThis value defaults to the environment variable COLLECTD_INTERVAL.\n\n"; + + while ((opt = getopt(argc, argv, "hls:c:n:i:")) != -1) + { + switch (opt) + { + case 'l': + enable_console_logging = 1; + break; + case 's': + free(serv_optarg); + serv_optarg = strdup(optarg); + break; + case 'c': + free(collectd_hostname); + collectd_hostname = strdup(optarg); + break; + case 'n': + free(instance_name); + instance_name = strdup(optarg); + break; + case 'i': + free(collectd_interval); + collectd_interval = strdup(optarg); + break; + default: + fprintf(stderr, usage, argv[0]); + return 1; + } + } + + if (serv_optarg == NULL) + { + serv_optarg = strdup(DISTRIBUTOR_UNIX_SOCKET); + } + + if (collectd_hostname == NULL) + { + collectd_hostname = getenv("COLLECTD_HOSTNAME"); + if (collectd_hostname == NULL) + { + collectd_hostname = strdup("localhost"); + } + else + { + enable_console_logging = 0; + } + } + + if (instance_name == NULL) + { + instance_name = strdup(DEFAULT_COLLECTD_EXEC_INST); + } + + if (collectd_interval == NULL) + { + collectd_interval = getenv("COLLECTD_INTERVAL"); + if (collectd_interval == NULL) + { + collectd_interval = strdup("60"); + } + else + { + enable_console_logging = 0; + } + } + + if (enable_console_logging != 0) + { + enable_console_logger(); + } + + if (str_value_to_ull(collectd_interval, &collectd_interval_ull) != CONVERSION_OK) + { + LOGGER_EARLY(1, "Collectd interval `%s' is not a valid number", collectd_interval); + 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; +} + +#ifdef GENERATE_TIMESTAMP +#define COLLECTD_COUNTER_PREFIX "PUTVAL \"%s/exec-%s/counter-" +#define COLLECTD_COUNTER_SUFFIX "\" interval=%llu %llu:%llu\n" +#define COLLECTD_COUNTER_N(value) \ + collectd_hostname, instance_name, #value, collectd_interval_ull, (unsigned long long int)now, \ + (unsigned long long int)collectd_statistics.value +#define COLLECTD_COUNTER_N2(name, value) \ + collectd_hostname, instance_name, name, collectd_interval_ull, (unsigned long long int)now, \ + (unsigned long long int)collectd_statistics.value + +#define COLLECTD_GAUGE_PREFIX "PUTVAL \"%s/exec-%s/gauge-" +#define COLLECTD_GAUGE_SUFFIX "\" interval=%llu %llu:%llu\n" +#define COLLECTD_GAUGE_N(value) \ + collectd_hostname, instance_name, #value, collectd_interval_ull, (unsigned long long int)now, \ + (unsigned long long int)collectd_statistics.value +#define COLLECTD_GAUGE_N2(name, value) \ + collectd_hostname, instance_name, name, collectd_interval_ull, (unsigned long long int)now, \ + (unsigned long long int)collectd_statistics.value +#else +#define COLLECTD_COUNTER_PREFIX "PUTVAL \"%s/exec-%s/counter-" +#define COLLECTD_COUNTER_SUFFIX "\" interval=%llu N:%llu\n" +#define COLLECTD_COUNTER_N(value) \ + collectd_hostname, instance_name, #value, collectd_interval_ull, \ + (unsigned long long int)collectd_statistics.counters.value +#define COLLECTD_COUNTER_N2(name, value) \ + collectd_hostname, instance_name, name, collectd_interval_ull, \ + (unsigned long long int)collectd_statistics.counters.value + +#define COLLECTD_GAUGE_PREFIX "PUTVAL \"%s/exec-%s/gauge-" +#define COLLECTD_GAUGE_SUFFIX "\" interval=%llu N:%llu\n" +#define COLLECTD_GAUGE_N(value) \ + collectd_hostname, instance_name, #value, collectd_interval_ull, \ + (unsigned long long int)collectd_statistics.gauges[0].value +#define COLLECTD_GAUGE_N2(name, value) \ + collectd_hostname, instance_name, name, collectd_interval_ull, \ + (unsigned long long int)collectd_statistics.gauges[0].value +#endif + +#define COLLECTD_COUNTER_N_FORMAT() COLLECTD_COUNTER_PREFIX "%s" COLLECTD_COUNTER_SUFFIX +#define COLLECTD_GAUGE_N_FORMAT() COLLECTD_GAUGE_PREFIX "%s" COLLECTD_GAUGE_SUFFIX +static void print_collectd_exec_output(void) +{ + size_t i; +#ifdef GENERATE_TIMESTAMP + time_t now = time(NULL); +#endif + + printf(COLLECTD_COUNTER_N_FORMAT() COLLECTD_COUNTER_N_FORMAT() COLLECTD_COUNTER_N_FORMAT() + COLLECTD_COUNTER_N_FORMAT() COLLECTD_COUNTER_N_FORMAT() COLLECTD_COUNTER_N_FORMAT() + COLLECTD_COUNTER_N_FORMAT() COLLECTD_COUNTER_N_FORMAT() COLLECTD_COUNTER_N_FORMAT() + COLLECTD_COUNTER_N_FORMAT() COLLECTD_COUNTER_N_FORMAT() COLLECTD_COUNTER_N_FORMAT() + COLLECTD_COUNTER_N_FORMAT() COLLECTD_COUNTER_N_FORMAT() COLLECTD_COUNTER_N_FORMAT() + COLLECTD_COUNTER_N_FORMAT() COLLECTD_COUNTER_N_FORMAT() COLLECTD_COUNTER_N_FORMAT() + COLLECTD_COUNTER_N_FORMAT() COLLECTD_COUNTER_N_FORMAT() COLLECTD_COUNTER_N_FORMAT() + COLLECTD_COUNTER_N_FORMAT() COLLECTD_COUNTER_N_FORMAT() + COLLECTD_COUNTER_N_FORMAT() COLLECTD_COUNTER_N_FORMAT() + COLLECTD_COUNTER_N_FORMAT() COLLECTD_COUNTER_N_FORMAT() + COLLECTD_COUNTER_N_FORMAT() COLLECTD_COUNTER_N_FORMAT() + COLLECTD_COUNTER_N_FORMAT() COLLECTD_COUNTER_N_FORMAT() + COLLECTD_COUNTER_N_FORMAT() COLLECTD_COUNTER_N_FORMAT() + COLLECTD_COUNTER_N_FORMAT() COLLECTD_COUNTER_N_FORMAT() + COLLECTD_COUNTER_N_FORMAT() + COLLECTD_COUNTER_N_FORMAT(), + + COLLECTD_COUNTER_N(json_lines), + COLLECTD_COUNTER_N(json_bytes), + COLLECTD_COUNTER_N(flow_new_count), + COLLECTD_COUNTER_N(flow_end_count), + COLLECTD_COUNTER_N(flow_idle_count), + COLLECTD_COUNTER_N(flow_update_count), + COLLECTD_COUNTER_N(flow_analyse_count), + COLLECTD_COUNTER_N(flow_guessed_count), + COLLECTD_COUNTER_N(flow_detected_count), + COLLECTD_COUNTER_N(flow_detection_update_count), + COLLECTD_COUNTER_N(flow_not_detected_count), + COLLECTD_COUNTER_N(flow_src_total_bytes), + COLLECTD_COUNTER_N(flow_dst_total_bytes), + COLLECTD_COUNTER_N(flow_risky_count), + COLLECTD_COUNTER_N(packet_count), + COLLECTD_COUNTER_N(packet_flow_count), + COLLECTD_COUNTER_N(init_count), + COLLECTD_COUNTER_N(reconnect_count), + COLLECTD_COUNTER_N(shutdown_count), + COLLECTD_COUNTER_N(status_count), + COLLECTD_COUNTER_N(error_unknown_datalink), + COLLECTD_COUNTER_N(error_unknown_l3_protocol), + COLLECTD_COUNTER_N(error_unsupported_datalink), + COLLECTD_COUNTER_N(error_packet_too_short), + COLLECTD_COUNTER_N(error_packet_type_unknown), + COLLECTD_COUNTER_N(error_packet_header_invalid), + COLLECTD_COUNTER_N(error_ip4_packet_too_short), + COLLECTD_COUNTER_N(error_ip4_size_smaller_than_header), + COLLECTD_COUNTER_N(error_ip4_l4_payload_detection), + COLLECTD_COUNTER_N(error_ip6_packet_too_short), + COLLECTD_COUNTER_N(error_ip6_size_smaller_than_header), + COLLECTD_COUNTER_N(error_ip6_l4_payload_detection), + COLLECTD_COUNTER_N(error_tcp_packet_too_short), + COLLECTD_COUNTER_N(error_udp_packet_too_short), + COLLECTD_COUNTER_N(error_capture_size_smaller_than_packet), + COLLECTD_COUNTER_N(error_max_flows_to_track), + COLLECTD_COUNTER_N(error_flow_memory_alloc)); + + printf(COLLECTD_GAUGE_N_FORMAT() COLLECTD_GAUGE_N_FORMAT() COLLECTD_GAUGE_N_FORMAT() COLLECTD_GAUGE_N_FORMAT() + COLLECTD_GAUGE_N_FORMAT() COLLECTD_GAUGE_N_FORMAT() COLLECTD_GAUGE_N_FORMAT() COLLECTD_GAUGE_N_FORMAT() + COLLECTD_GAUGE_N_FORMAT(), + + COLLECTD_GAUGE_N(flow_breed_safe_count), + COLLECTD_GAUGE_N(flow_breed_acceptable_count), + COLLECTD_GAUGE_N(flow_breed_fun_count), + COLLECTD_GAUGE_N(flow_breed_unsafe_count), + COLLECTD_GAUGE_N(flow_breed_potentially_dangerous_count), + COLLECTD_GAUGE_N(flow_breed_tracker_ads_count), + COLLECTD_GAUGE_N(flow_breed_dangerous_count), + COLLECTD_GAUGE_N(flow_breed_unrated_count), + COLLECTD_GAUGE_N(flow_breed_unknown_count)); + + printf(COLLECTD_GAUGE_N_FORMAT() COLLECTD_GAUGE_N_FORMAT() COLLECTD_GAUGE_N_FORMAT() COLLECTD_GAUGE_N_FORMAT() + COLLECTD_GAUGE_N_FORMAT() COLLECTD_GAUGE_N_FORMAT() COLLECTD_GAUGE_N_FORMAT() COLLECTD_GAUGE_N_FORMAT() + COLLECTD_GAUGE_N_FORMAT() COLLECTD_GAUGE_N_FORMAT() COLLECTD_GAUGE_N_FORMAT() + COLLECTD_GAUGE_N_FORMAT() COLLECTD_GAUGE_N_FORMAT() COLLECTD_GAUGE_N_FORMAT() + COLLECTD_GAUGE_N_FORMAT() COLLECTD_GAUGE_N_FORMAT() COLLECTD_GAUGE_N_FORMAT() + COLLECTD_GAUGE_N_FORMAT() COLLECTD_GAUGE_N_FORMAT() COLLECTD_GAUGE_N_FORMAT() + COLLECTD_GAUGE_N_FORMAT() COLLECTD_GAUGE_N_FORMAT() COLLECTD_GAUGE_N_FORMAT() + COLLECTD_GAUGE_N_FORMAT() COLLECTD_GAUGE_N_FORMAT() COLLECTD_GAUGE_N_FORMAT() + COLLECTD_GAUGE_N_FORMAT() COLLECTD_GAUGE_N_FORMAT() COLLECTD_GAUGE_N_FORMAT() + COLLECTD_GAUGE_N_FORMAT() COLLECTD_GAUGE_N_FORMAT() + COLLECTD_GAUGE_N_FORMAT() COLLECTD_GAUGE_N_FORMAT() + COLLECTD_GAUGE_N_FORMAT() COLLECTD_GAUGE_N_FORMAT() + COLLECTD_GAUGE_N_FORMAT() COLLECTD_GAUGE_N_FORMAT() + COLLECTD_GAUGE_N_FORMAT() COLLECTD_GAUGE_N_FORMAT() + COLLECTD_GAUGE_N_FORMAT(), + + COLLECTD_GAUGE_N(flow_category_unspecified_count), + COLLECTD_GAUGE_N(flow_category_media_count), + COLLECTD_GAUGE_N(flow_category_vpn_count), + COLLECTD_GAUGE_N(flow_category_email_count), + COLLECTD_GAUGE_N(flow_category_data_transfer_count), + COLLECTD_GAUGE_N(flow_category_web_count), + COLLECTD_GAUGE_N(flow_category_social_network_count), + COLLECTD_GAUGE_N(flow_category_download_count), + COLLECTD_GAUGE_N(flow_category_game_count), + COLLECTD_GAUGE_N(flow_category_chat_count), + COLLECTD_GAUGE_N(flow_category_voip_count), + COLLECTD_GAUGE_N(flow_category_database_count), + COLLECTD_GAUGE_N(flow_category_remote_access_count), + COLLECTD_GAUGE_N(flow_category_cloud_count), + COLLECTD_GAUGE_N(flow_category_network_count), + COLLECTD_GAUGE_N(flow_category_collaborative_count), + COLLECTD_GAUGE_N(flow_category_rpc_count), + COLLECTD_GAUGE_N(flow_category_streaming_count), + COLLECTD_GAUGE_N(flow_category_system_count), + COLLECTD_GAUGE_N(flow_category_software_update_count), + COLLECTD_GAUGE_N(flow_category_music_count), + COLLECTD_GAUGE_N(flow_category_video_count), + COLLECTD_GAUGE_N(flow_category_shopping_count), + COLLECTD_GAUGE_N(flow_category_productivity_count), + COLLECTD_GAUGE_N(flow_category_file_sharing_count), + COLLECTD_GAUGE_N(flow_category_conn_check_count), + COLLECTD_GAUGE_N(flow_category_iot_scada_count), + COLLECTD_GAUGE_N(flow_category_virt_assistant_count), + COLLECTD_GAUGE_N(flow_category_cybersecurity_count), + COLLECTD_GAUGE_N(flow_category_adult_content_count), + COLLECTD_GAUGE_N(flow_category_mining_count), + COLLECTD_GAUGE_N(flow_category_malware_count), + COLLECTD_GAUGE_N(flow_category_advertisment_count), + COLLECTD_GAUGE_N(flow_category_banned_site_count), + COLLECTD_GAUGE_N(flow_category_site_unavail_count), + COLLECTD_GAUGE_N(flow_category_allowed_site_count), + COLLECTD_GAUGE_N(flow_category_antimalware_count), + COLLECTD_GAUGE_N(flow_category_crypto_currency_count), + COLLECTD_GAUGE_N(flow_category_gambling_count), + COLLECTD_GAUGE_N(flow_category_unknown_count)); + + printf(COLLECTD_GAUGE_N_FORMAT() COLLECTD_GAUGE_N_FORMAT() COLLECTD_GAUGE_N_FORMAT() COLLECTD_GAUGE_N_FORMAT() + COLLECTD_GAUGE_N_FORMAT() COLLECTD_GAUGE_N_FORMAT() COLLECTD_GAUGE_N_FORMAT() COLLECTD_GAUGE_N_FORMAT() + COLLECTD_GAUGE_N_FORMAT() COLLECTD_GAUGE_N_FORMAT(), + + COLLECTD_GAUGE_N(flow_confidence_by_port), + COLLECTD_GAUGE_N(flow_confidence_dpi_partial), + COLLECTD_GAUGE_N(flow_confidence_dpi_partial_cache), + COLLECTD_GAUGE_N(flow_confidence_dpi_cache), + COLLECTD_GAUGE_N(flow_confidence_dpi), + COLLECTD_GAUGE_N(flow_confidence_nbpf), + COLLECTD_GAUGE_N(flow_confidence_by_ip), + COLLECTD_GAUGE_N(flow_confidence_dpi_aggressive), + COLLECTD_GAUGE_N(flow_confidence_custom_rule), + COLLECTD_GAUGE_N(flow_confidence_unknown)); + + printf(COLLECTD_GAUGE_N_FORMAT() COLLECTD_GAUGE_N_FORMAT() COLLECTD_GAUGE_N_FORMAT() COLLECTD_GAUGE_N_FORMAT() + COLLECTD_GAUGE_N_FORMAT() COLLECTD_GAUGE_N_FORMAT() COLLECTD_GAUGE_N_FORMAT(), + + COLLECTD_GAUGE_N(flow_severity_low), + COLLECTD_GAUGE_N(flow_severity_medium), + COLLECTD_GAUGE_N(flow_severity_high), + COLLECTD_GAUGE_N(flow_severity_severe), + COLLECTD_GAUGE_N(flow_severity_critical), + COLLECTD_GAUGE_N(flow_severity_emergency), + COLLECTD_GAUGE_N(flow_severity_unknown)); + + printf(COLLECTD_GAUGE_N_FORMAT() COLLECTD_GAUGE_N_FORMAT() COLLECTD_GAUGE_N_FORMAT() COLLECTD_GAUGE_N_FORMAT() + COLLECTD_GAUGE_N_FORMAT() COLLECTD_GAUGE_N_FORMAT() COLLECTD_GAUGE_N_FORMAT() COLLECTD_GAUGE_N_FORMAT(), + + COLLECTD_GAUGE_N(flow_l3_ip4_count), + COLLECTD_GAUGE_N(flow_l3_ip6_count), + COLLECTD_GAUGE_N(flow_l3_other_count), + COLLECTD_GAUGE_N(flow_l4_tcp_count), + COLLECTD_GAUGE_N(flow_l4_udp_count), + COLLECTD_GAUGE_N(flow_l4_icmp_count), + COLLECTD_GAUGE_N(flow_l4_other_count), + COLLECTD_GAUGE_N(flow_risk_unknown_count)); + + printf(COLLECTD_GAUGE_N_FORMAT() COLLECTD_GAUGE_N_FORMAT() COLLECTD_GAUGE_N_FORMAT() COLLECTD_GAUGE_N_FORMAT(), + COLLECTD_GAUGE_N(flow_active_count), + COLLECTD_GAUGE_N(flow_detected_count), + COLLECTD_GAUGE_N(flow_guessed_count), + COLLECTD_GAUGE_N(flow_not_detected_count)); + + for (i = 0; i < NDPI_MAX_RISK - 1 /* NDPI_NO_RISK */; ++i) + { + char gauge_name[BUFSIZ]; + snprintf(gauge_name, sizeof(gauge_name), "flow_risk_%zu_count", i + 1); + printf(COLLECTD_GAUGE_N_FORMAT(), COLLECTD_GAUGE_N2(gauge_name, flow_risk_count[i])); + } + + COLLECTD_STATS_GAUGE_SUB(flow_state_info); + COLLECTD_STATS_GAUGE_SUB(flow_state_finished); + + COLLECTD_STATS_GAUGE_SUB(flow_breed_safe_count); + COLLECTD_STATS_GAUGE_SUB(flow_breed_acceptable_count); + COLLECTD_STATS_GAUGE_SUB(flow_breed_fun_count); + COLLECTD_STATS_GAUGE_SUB(flow_breed_unsafe_count); + COLLECTD_STATS_GAUGE_SUB(flow_breed_potentially_dangerous_count); + COLLECTD_STATS_GAUGE_SUB(flow_breed_tracker_ads_count); + COLLECTD_STATS_GAUGE_SUB(flow_breed_dangerous_count); + COLLECTD_STATS_GAUGE_SUB(flow_breed_unrated_count); + COLLECTD_STATS_GAUGE_SUB(flow_breed_unknown_count); + + COLLECTD_STATS_GAUGE_SUB(flow_category_unspecified_count); + COLLECTD_STATS_GAUGE_SUB(flow_category_media_count); + COLLECTD_STATS_GAUGE_SUB(flow_category_vpn_count); + COLLECTD_STATS_GAUGE_SUB(flow_category_email_count); + COLLECTD_STATS_GAUGE_SUB(flow_category_data_transfer_count); + COLLECTD_STATS_GAUGE_SUB(flow_category_web_count); + COLLECTD_STATS_GAUGE_SUB(flow_category_social_network_count); + COLLECTD_STATS_GAUGE_SUB(flow_category_download_count); + COLLECTD_STATS_GAUGE_SUB(flow_category_game_count); + COLLECTD_STATS_GAUGE_SUB(flow_category_chat_count); + COLLECTD_STATS_GAUGE_SUB(flow_category_voip_count); + COLLECTD_STATS_GAUGE_SUB(flow_category_database_count); + COLLECTD_STATS_GAUGE_SUB(flow_category_remote_access_count); + COLLECTD_STATS_GAUGE_SUB(flow_category_cloud_count); + COLLECTD_STATS_GAUGE_SUB(flow_category_network_count); + COLLECTD_STATS_GAUGE_SUB(flow_category_collaborative_count); + COLLECTD_STATS_GAUGE_SUB(flow_category_rpc_count); + COLLECTD_STATS_GAUGE_SUB(flow_category_streaming_count); + COLLECTD_STATS_GAUGE_SUB(flow_category_system_count); + COLLECTD_STATS_GAUGE_SUB(flow_category_software_update_count); + COLLECTD_STATS_GAUGE_SUB(flow_category_music_count); + COLLECTD_STATS_GAUGE_SUB(flow_category_video_count); + COLLECTD_STATS_GAUGE_SUB(flow_category_shopping_count); + COLLECTD_STATS_GAUGE_SUB(flow_category_productivity_count); + COLLECTD_STATS_GAUGE_SUB(flow_category_file_sharing_count); + COLLECTD_STATS_GAUGE_SUB(flow_category_conn_check_count); + COLLECTD_STATS_GAUGE_SUB(flow_category_iot_scada_count); + COLLECTD_STATS_GAUGE_SUB(flow_category_virt_assistant_count); + COLLECTD_STATS_GAUGE_SUB(flow_category_cybersecurity_count); + COLLECTD_STATS_GAUGE_SUB(flow_category_adult_content_count); + COLLECTD_STATS_GAUGE_SUB(flow_category_mining_count); + COLLECTD_STATS_GAUGE_SUB(flow_category_malware_count); + COLLECTD_STATS_GAUGE_SUB(flow_category_advertisment_count); + COLLECTD_STATS_GAUGE_SUB(flow_category_banned_site_count); + COLLECTD_STATS_GAUGE_SUB(flow_category_site_unavail_count); + COLLECTD_STATS_GAUGE_SUB(flow_category_allowed_site_count); + COLLECTD_STATS_GAUGE_SUB(flow_category_antimalware_count); + COLLECTD_STATS_GAUGE_SUB(flow_category_crypto_currency_count); + COLLECTD_STATS_GAUGE_SUB(flow_category_gambling_count); + COLLECTD_STATS_GAUGE_SUB(flow_category_unknown_count); + + COLLECTD_STATS_GAUGE_SUB(flow_confidence_by_port); + COLLECTD_STATS_GAUGE_SUB(flow_confidence_dpi_partial); + COLLECTD_STATS_GAUGE_SUB(flow_confidence_dpi_partial_cache); + COLLECTD_STATS_GAUGE_SUB(flow_confidence_dpi_cache); + COLLECTD_STATS_GAUGE_SUB(flow_confidence_dpi); + COLLECTD_STATS_GAUGE_SUB(flow_confidence_nbpf); + COLLECTD_STATS_GAUGE_SUB(flow_confidence_by_ip); + COLLECTD_STATS_GAUGE_SUB(flow_confidence_dpi_aggressive); + COLLECTD_STATS_GAUGE_SUB(flow_confidence_custom_rule); + COLLECTD_STATS_GAUGE_SUB(flow_confidence_unknown); + + COLLECTD_STATS_GAUGE_SUB(flow_severity_low); + COLLECTD_STATS_GAUGE_SUB(flow_severity_medium); + COLLECTD_STATS_GAUGE_SUB(flow_severity_high); + COLLECTD_STATS_GAUGE_SUB(flow_severity_severe); + COLLECTD_STATS_GAUGE_SUB(flow_severity_critical); + COLLECTD_STATS_GAUGE_SUB(flow_severity_emergency); + COLLECTD_STATS_GAUGE_SUB(flow_severity_unknown); + + COLLECTD_STATS_GAUGE_SUB(flow_l3_ip4_count); + COLLECTD_STATS_GAUGE_SUB(flow_l3_ip6_count); + COLLECTD_STATS_GAUGE_SUB(flow_l3_other_count); + + COLLECTD_STATS_GAUGE_SUB(flow_l4_tcp_count); + COLLECTD_STATS_GAUGE_SUB(flow_l4_udp_count); + COLLECTD_STATS_GAUGE_SUB(flow_l4_icmp_count); + COLLECTD_STATS_GAUGE_SUB(flow_l4_other_count); + + COLLECTD_STATS_GAUGE_SUB(flow_active_count); + COLLECTD_STATS_GAUGE_SUB(flow_detected_count); + COLLECTD_STATS_GAUGE_SUB(flow_guessed_count); + COLLECTD_STATS_GAUGE_SUB(flow_not_detected_count); + + for (size_t i = 0; i < NDPI_MAX_RISK - 1 /* NDPI_NO_RISK */; ++i) + { + COLLECTD_STATS_GAUGE_SUB(flow_risk_count[i]); + } + COLLECTD_STATS_GAUGE_SUB(flow_risk_unknown_count); + + memset(&collectd_statistics.gauges[1], 0, sizeof(collectd_statistics.gauges[1])); +} + +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 == collectd_timerfd) + { + uint64_t expirations; + + /* + * Check if collectd parent process is still running. + * May happen if collectd was killed with singals e.g. SIGKILL. + */ + if (getppid() != collectd_pid) + { + logger(1, "Parent process %d exited. Nothing left to do here, bye.", collectd_pid); + return 1; + } + + errno = 0; + if (read(collectd_timerfd, &expirations, sizeof(expirations)) != sizeof(expirations)) + { + logger(1, "Could not read timer expirations: %s", strerror(errno)); + return 1; + } + if (set_collectd_timer() != 0) + { + logger(1, "Could not set timer: %s", strerror(errno)); + return 1; + } + + print_collectd_exec_output(); + } + 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 collectd_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 collectd_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 collectd_map_to_stat(value_str, value_length, map, map_length); +} + +static void collectd_unmap_flow_from_stat(struct flow_user_data * const flow_user_data) +{ + if (flow_user_data->is_ip4 != 0) + { + COLLECTD_STATS_GAUGE_DEC(flow_l3_ip4_count); + } + + if (flow_user_data->is_ip6 != 0) + { + COLLECTD_STATS_GAUGE_DEC(flow_l3_ip6_count); + } + + if (flow_user_data->is_other_l3 != 0) + { + COLLECTD_STATS_GAUGE_DEC(flow_l3_other_count); + } + + if (flow_user_data->is_tcp != 0) + { + COLLECTD_STATS_GAUGE_DEC(flow_l4_tcp_count); + } + + if (flow_user_data->is_udp != 0) + { + COLLECTD_STATS_GAUGE_DEC(flow_l4_udp_count); + } + + if (flow_user_data->is_icmp != 0) + { + COLLECTD_STATS_GAUGE_DEC(flow_l4_icmp_count); + } + + if (flow_user_data->is_other_l4 != 0) + { + COLLECTD_STATS_GAUGE_DEC(flow_l4_other_count); + } + + if (flow_user_data->new_seen != 0) + { + COLLECTD_STATS_GAUGE_DEC(flow_active_count); + } + + if (flow_user_data->is_detected != 0) + { + COLLECTD_STATS_GAUGE_DEC(flow_detected_count); + } + + if (flow_user_data->is_guessed != 0) + { + COLLECTD_STATS_GAUGE_DEC(flow_guessed_count); + } + + if (flow_user_data->is_not_detected != 0) + { + COLLECTD_STATS_GAUGE_DEC(flow_not_detected_count); + } + + if (flow_user_data->is_info != 0) + { + COLLECTD_STATS_GAUGE_DEC(flow_state_info); + } + + if (flow_user_data->is_finished != 0) + { + COLLECTD_STATS_GAUGE_DEC(flow_state_finished); + } + + if (flow_user_data->breed > 0 && flow_user_data->breed_ndpid_invalid == 0 && + COLLECTD_STATS_MAP_NOTNULL(breeds_map, flow_user_data->breed) != 0) + { + COLLECTD_STATS_MAP_DEC(breeds_map, flow_user_data->breed); + } + + if (flow_user_data->category > 0 && flow_user_data->category_ndpid_invalid == 0 && + COLLECTD_STATS_MAP_NOTNULL(categories_map, flow_user_data->category) != 0) + { + COLLECTD_STATS_MAP_DEC(categories_map, flow_user_data->category); + } + + if (flow_user_data->confidence > 0 && flow_user_data->confidence_ndpid_invalid == 0 && + COLLECTD_STATS_MAP_NOTNULL(confidence_map, flow_user_data->confidence) != 0) + { + COLLECTD_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) + { + COLLECTD_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) + { + COLLECTD_STATS_GAUGE_DEC(flow_risk_count[flow_user_data->risks[i]]); + } + } + + if (flow_user_data->risk_ndpid_invalid != 0) + { + COLLECTD_STATS_GAUGE_DEC(flow_risk_unknown_count); + } +} + +static ssize_t collectd_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 collectd_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 = collectd_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; + COLLECTD_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; + COLLECTD_STATS_GAUGE_INC(flow_l3_ip4_count); + } + else if (TOKEN_VALUE_EQUALS_SZ(sock, l3_proto, "ip6") != 0) + { + flow_user_data->is_ip6 = 1; + COLLECTD_STATS_GAUGE_INC(flow_l3_ip6_count); + } + else if (l3_proto != NULL) + { + flow_user_data->is_other_l3 = 1; + COLLECTD_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; + COLLECTD_STATS_GAUGE_INC(flow_l4_tcp_count); + } + else if (TOKEN_VALUE_EQUALS_SZ(sock, l4_proto, "udp") != 0) + { + flow_user_data->is_udp = 1; + COLLECTD_STATS_GAUGE_INC(flow_l4_udp_count); + } + else if (TOKEN_VALUE_EQUALS_SZ(sock, l4_proto, "icmp") != 0) + { + flow_user_data->is_icmp = 1; + COLLECTD_STATS_GAUGE_INC(flow_l4_icmp_count); + } + else if (l4_proto != NULL) + { + flow_user_data->is_other_l4 = 1; + COLLECTD_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; + COLLECTD_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; + COLLECTD_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; + COLLECTD_STATS_GAUGE_INC(flow_detected_count); + } + + if (flow_risk != NULL) + { + if (flow_user_data->risks[0] == 0) + { + COLLECTD_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) + { + logger(1, "%s", "Missing numeric risk value"); + continue; + } + + 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 (collectd_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 (collectd_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; + } + + COLLECTD_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; + COLLECTD_STATS_GAUGE_INC(flow_risk_unknown_count); + } + } + else + { + logger(1, "Invalid numeric risk value: %s", numeric_risk_buf); + } + } + } + + 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 (collectd_map_flow_u8( + sock, breed, breeds_map, nDPIsrvd_ARRAY_LENGTH(breeds_map), &flow_user_data->breed) != 0 || + collectd_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 (collectd_map_flow_u8( + sock, category, categories_map, nDPIsrvd_ARRAY_LENGTH(categories_map), &flow_user_data->category) != + 0 || + collectd_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 (collectd_map_flow_u8(sock, + current, + confidence_map, + nDPIsrvd_ARRAY_LENGTH(confidence_map), + &flow_user_data->confidence) != 0 || + collectd_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; + COLLECTD_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; + COLLECTD_STATS_GAUGE_RES(flow_state_info); + } + flow_user_data->is_finished = 1; + COLLECTD_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) + { + collectd_statistics.counters.flow_src_total_bytes += + total_bytes_ull[0] - flow_user_data->last_flow_src_l4_payload_len; + collectd_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) + { + collectd_unmap_flow_from_stat(flow_user_data); + } +} + +static enum nDPIsrvd_callback_return collectd_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"); + + COLLECTD_STATS_COUNTER_INC(json_lines); + collectd_statistics.counters.json_bytes += sock->buffer.json_message_length + NETWORK_BUFFER_LENGTH_DIGITS; + + process_flow_stats(sock, flow); + + if (flow_event != NULL && + collectd_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 && + collectd_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 && + collectd_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 && + collectd_map_value_to_stat(sock, error_event, error_event_map, nDPIsrvd_ARRAY_LENGTH(error_event_map)) != 0) + { + logger(1, "%s", "Unknown error_event_name"); + } + + return CALLBACK_OK; +} + +int main(int argc, char ** argv) +{ + enum nDPIsrvd_connect_return connect_ret; + int retval = 1, epollfd = -1; + + init_logging("nDPIsrvd-collectd"); + + struct nDPIsrvd_socket * sock = + nDPIsrvd_socket_init(0, 0, 0, sizeof(struct flow_user_data), collectd_json_callback, NULL, NULL); + if (sock == NULL) + { + LOGGER_EARLY(1, "%s", "nDPIsrvd socket memory allocation failed!"); + return 1; + } + + if (parse_options(argc, argv, sock) != 0) + { + goto failure; + } + + if (getenv("COLLECTD_HOSTNAME") == NULL && getenv("COLLECTD_INTERVAL") == NULL) + { + LOGGER_EARLY(0, "Recv buffer size: %u", NETWORK_BUFFER_MAX_SIZE); + LOGGER_EARLY(0, "Connecting to `%s'..", serv_optarg); + } + else + { + LOGGER_EARLY(0, "Collectd hostname: %s", getenv("COLLECTD_HOSTNAME")); + LOGGER_EARLY(0, "Collectd interval: %llu", collectd_interval_ull); + } + + 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)); + } + + connect_ret = nDPIsrvd_connect(sock); + if (connect_ret != 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); + + collectd_pid = getppid(); + + epollfd = epoll_create1(0); + if (epollfd < 0) + { + LOGGER_EARLY(1, "Error creating epoll: %s", strerror(errno)); + goto failure; + } + + if (create_collectd_timer() != 0) + { + LOGGER_EARLY(1, "Error creating timer: %s", strerror(errno)); + goto failure; + } + + { + struct epoll_event timer_event = {.data.fd = collectd_timerfd, .events = EPOLLIN}; + if (epoll_ctl(epollfd, EPOLL_CTL_ADD, collectd_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; + } + } + + logger(0, "%s", "Initialization succeeded."); + retval = mainloop(epollfd, sock); + + if (getenv("COLLECTD_INTERVAL") == NULL) + { + print_collectd_exec_output(); + } + +failure: + nDPIsrvd_socket_free(&sock); + close(collectd_timerfd); + close(epollfd); + shutdown_logging(); + + return retval; +} |