/* * This implements rpc.statsd support, see docs/rpc_statsd.md * */ #include #include #include #include #include #include #include #include #include "afl-fuzz.h" #define MAX_STATSD_PACKET_SIZE 4096 #define MAX_TAG_LEN 200 #define METRIC_PREFIX "fuzzing" /* Tags format for metrics DogStatsD: metric.name:||#key:value,key2:value2 InfluxDB metric.name,key=value,key2=value2:| Librato metric.name#key=value,key2=value2:| SignalFX metric.name[key=value,key2=value2]:| */ // after the whole metric. #define DOGSTATSD_TAGS_FORMAT "|#banner:%s,afl_version:%s" // just after the metric name. #define LIBRATO_TAGS_FORMAT "#banner=%s,afl_version=%s" #define INFLUXDB_TAGS_FORMAT ",banner=%s,afl_version=%s" #define SIGNALFX_TAGS_FORMAT "[banner=%s,afl_version=%s]" // For DogstatsD #define STATSD_TAGS_TYPE_SUFFIX 1 #define STATSD_TAGS_SUFFIX_METRICS \ METRIC_PREFIX \ ".cycle_done:%llu|g%s\n" METRIC_PREFIX \ ".cycles_wo_finds:%llu|g%s\n" METRIC_PREFIX \ ".execs_done:%llu|g%s\n" METRIC_PREFIX \ ".execs_per_sec:%0.02f|g%s\n" METRIC_PREFIX \ ".corpus_count:%u|g%s\n" METRIC_PREFIX \ ".corpus_favored:%u|g%s\n" METRIC_PREFIX \ ".corpus_found:%u|g%s\n" METRIC_PREFIX \ ".corpus_imported:%u|g%s\n" METRIC_PREFIX \ ".max_depth:%u|g%s\n" METRIC_PREFIX ".cur_item:%u|g%s\n" METRIC_PREFIX \ ".pending_favs:%u|g%s\n" METRIC_PREFIX \ ".pending_total:%u|g%s\n" METRIC_PREFIX \ ".corpus_variable:%u|g%s\n" METRIC_PREFIX \ ".saved_crashes:%llu|g%s\n" METRIC_PREFIX \ ".saved_hangs:%llu|g%s\n" METRIC_PREFIX \ ".total_crashes:%llu|g%s\n" METRIC_PREFIX \ ".slowest_exec_ms:%u|g%s\n" METRIC_PREFIX \ ".edges_found:%u|g%s\n" METRIC_PREFIX \ ".var_byte_count:%u|g%s\n" METRIC_PREFIX ".havoc_expansion:%u|g%s\n" // For Librato, InfluxDB, SignalFX #define STATSD_TAGS_TYPE_MID 2 #define STATSD_TAGS_MID_METRICS \ METRIC_PREFIX \ ".cycle_done%s:%llu|g\n" METRIC_PREFIX \ ".cycles_wo_finds%s:%llu|g\n" METRIC_PREFIX \ ".execs_done%s:%llu|g\n" METRIC_PREFIX \ ".execs_per_sec%s:%0.02f|g\n" METRIC_PREFIX \ ".corpus_count%s:%u|g\n" METRIC_PREFIX \ ".corpus_favored%s:%u|g\n" METRIC_PREFIX \ ".corpus_found%s:%u|g\n" METRIC_PREFIX \ ".corpus_imported%s:%u|g\n" METRIC_PREFIX \ ".max_depth%s:%u|g\n" METRIC_PREFIX ".cur_item%s:%u|g\n" METRIC_PREFIX \ ".pending_favs%s:%u|g\n" METRIC_PREFIX \ ".pending_total%s:%u|g\n" METRIC_PREFIX \ ".corpus_variable%s:%u|g\n" METRIC_PREFIX \ ".saved_crashes%s:%llu|g\n" METRIC_PREFIX \ ".saved_hangs%s:%llu|g\n" METRIC_PREFIX \ ".total_crashes%s:%llu|g\n" METRIC_PREFIX \ ".slowest_exec_ms%s:%u|g\n" METRIC_PREFIX \ ".edges_found%s:%u|g\n" METRIC_PREFIX \ ".var_byte_count%s:%u|g\n" METRIC_PREFIX ".havoc_expansion%s:%u|g\n" void statsd_setup_format(afl_state_t *afl) { if (afl->afl_env.afl_statsd_tags_flavor && strcmp(afl->afl_env.afl_statsd_tags_flavor, "dogstatsd") == 0) { afl->statsd_tags_format = DOGSTATSD_TAGS_FORMAT; afl->statsd_metric_format = STATSD_TAGS_SUFFIX_METRICS; afl->statsd_metric_format_type = STATSD_TAGS_TYPE_SUFFIX; } else if (afl->afl_env.afl_statsd_tags_flavor && strcmp(afl->afl_env.afl_statsd_tags_flavor, "librato") == 0) { afl->statsd_tags_format = LIBRATO_TAGS_FORMAT; afl->statsd_metric_format = STATSD_TAGS_MID_METRICS; afl->statsd_metric_format_type = STATSD_TAGS_TYPE_MID; } else if (afl->afl_env.afl_statsd_tags_flavor && strcmp(afl->afl_env.afl_statsd_tags_flavor, "influxdb") == 0) { afl->statsd_tags_format = INFLUXDB_TAGS_FORMAT; afl->statsd_metric_format = STATSD_TAGS_MID_METRICS; afl->statsd_metric_format_type = STATSD_TAGS_TYPE_MID; } else if (afl->afl_env.afl_statsd_tags_flavor && strcmp(afl->afl_env.afl_statsd_tags_flavor, "signalfx") == 0) { afl->statsd_tags_format = SIGNALFX_TAGS_FORMAT; afl->statsd_metric_format = STATSD_TAGS_MID_METRICS; afl->statsd_metric_format_type = STATSD_TAGS_TYPE_MID; } else { // No tags at all. afl->statsd_tags_format = ""; // Still need to pick a format. Doesn't change anything since if will be // replaced by the empty string anyway. afl->statsd_metric_format = STATSD_TAGS_MID_METRICS; afl->statsd_metric_format_type = STATSD_TAGS_TYPE_MID; } } int statsd_socket_init(afl_state_t *afl) { /* Default port and host. Will be overwritten by AFL_STATSD_PORT and AFL_STATSD_HOST environment variable, if they exists. */ u16 port = STATSD_DEFAULT_PORT; char *host = STATSD_DEFAULT_HOST; if (afl->afl_env.afl_statsd_port) { port = atoi(afl->afl_env.afl_statsd_port); } if (afl->afl_env.afl_statsd_host) { host = afl->afl_env.afl_statsd_host; } int sock; if ((sock = socket(AF_INET, SOCK_DGRAM, IPPROTO_UDP)) == -1) { FATAL("Failed to create socket"); } memset(&afl->statsd_server, 0, sizeof(afl->statsd_server)); afl->statsd_server.sin_family = AF_INET; afl->statsd_server.sin_port = htons(port); struct addrinfo *result; struct addrinfo hints; memset(&hints, 0, sizeof(struct addrinfo)); hints.ai_family = AF_INET; hints.ai_socktype = SOCK_DGRAM; if ((getaddrinfo(host, NULL, &hints, &result))) { FATAL("Fail to getaddrinfo"); } memcpy(&(afl->statsd_server.sin_addr), &((struct sockaddr_in *)result->ai_addr)->sin_addr, sizeof(struct in_addr)); freeaddrinfo(result); return sock; } int statsd_send_metric(afl_state_t *afl) { char buff[MAX_STATSD_PACKET_SIZE] = {0}; /* afl->statsd_sock is set once in the initialisation of afl-fuzz and reused each time If the sendto later fail, we reset it to 0 to be able to recreates it. */ if (!afl->statsd_sock) { afl->statsd_sock = statsd_socket_init(afl); if (!afl->statsd_sock) { WARNF("Cannot create socket"); return -1; } } statsd_format_metric(afl, buff, MAX_STATSD_PACKET_SIZE); if (sendto(afl->statsd_sock, buff, strlen(buff), 0, (struct sockaddr *)&afl->statsd_server, sizeof(afl->statsd_server)) == -1) { if (!close(afl->statsd_sock)) { PFATAL("Cannot close socket"); } afl->statsd_sock = 0; WARNF("Cannot sendto"); return -1; } return 0; } int statsd_format_metric(afl_state_t *afl, char *buff, size_t bufflen) { char tags[MAX_TAG_LEN * 2] = {0}; if (afl->statsd_tags_format) { snprintf(tags, MAX_TAG_LEN * 2, afl->statsd_tags_format, afl->sync_id, VERSION); } /* Sends multiple metrics with one UDP Packet. bufflen will limit to the max safe size. */ if (afl->statsd_metric_format_type == STATSD_TAGS_TYPE_SUFFIX) { snprintf( buff, bufflen, afl->statsd_metric_format, afl->queue_cycle ? (afl->queue_cycle - 1) : 0, tags, afl->cycles_wo_finds, tags, afl->fsrv.total_execs, tags, afl->fsrv.total_execs / ((double)(get_cur_time() + afl->prev_run_time - afl->start_time) / 1000), tags, afl->queued_items, tags, afl->queued_favored, tags, afl->queued_discovered, tags, afl->queued_imported, tags, afl->max_depth, tags, afl->current_entry, tags, afl->pending_favored, tags, afl->pending_not_fuzzed, tags, afl->queued_variable, tags, afl->saved_crashes, tags, afl->saved_hangs, tags, afl->total_crashes, tags, afl->slowest_exec_ms, tags, count_non_255_bytes(afl, afl->virgin_bits), tags, afl->var_byte_count, tags, afl->expand_havoc, tags); } else if (afl->statsd_metric_format_type == STATSD_TAGS_TYPE_MID) { snprintf( buff, bufflen, afl->statsd_metric_format, tags, afl->queue_cycle ? (afl->queue_cycle - 1) : 0, tags, afl->cycles_wo_finds, tags, afl->fsrv.total_execs, tags, afl->fsrv.total_execs / ((double)(get_cur_time() + afl->prev_run_time - afl->start_time) / 1000), tags, afl->queued_items, tags, afl->queued_favored, tags, afl->queued_discovered, tags, afl->queued_imported, tags, afl->max_depth, tags, afl->current_entry, tags, afl->pending_favored, tags, afl->pending_not_fuzzed, tags, afl->queued_variable, tags, afl->saved_crashes, tags, afl->saved_hangs, tags, afl->total_crashes, tags, afl->slowest_exec_ms, tags, count_non_255_bytes(afl, afl->virgin_bits), tags, afl->var_byte_count, tags, afl->expand_havoc); } return 0; }