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AFLplusplus/src/afl-fuzz-statsd.c

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/*
* This implements rpc.statsd support, see docs/rpc_statsd.md
*
*/
#include <stdio.h>
#include <stdlib.h>
#include <sys/socket.h>
#include <arpa/inet.h>
#include <string.h>
#include <sys/types.h>
#include <netdb.h>
#include <unistd.h>
#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:<value>|<type>|#key:value,key2:value2
InfluxDB
metric.name,key=value,key2=value2:<value>|<type>
Librato
metric.name#key=value,key2=value2:<value>|<type>
SignalFX
metric.name[key=value,key2=value2]:<value>|<type>
*/
// 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;
}
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