commit e85f86bb7b676435b2eb11006f111f6e45b8d252 Author: David Goulet dgoulet@torproject.org Date: Thu Oct 31 13:57:14 2019 -0400
dos: Add HS DoS INTRO2 rejected stats in heartbeat
The DoS heartbeat now contains the number of rejected INTRODUCE2 cell that the relay has seen.
Closes #31371
Signed-off-by: David Goulet dgoulet@torproject.org --- src/core/or/dos.c | 13 +++++++++++-- src/feature/hs/hs_dos.c | 7 +++++++ src/feature/hs/hs_dos.h | 3 +++ 3 files changed, 21 insertions(+), 2 deletions(-)
diff --git a/src/core/or/dos.c b/src/core/or/dos.c index 5f9bbf90a..8cfea910b 100644 --- a/src/core/or/dos.c +++ b/src/core/or/dos.c @@ -15,6 +15,7 @@ #include "core/or/channel.h" #include "core/or/connection_or.h" #include "core/or/relay.h" +#include "feature/hs/hs_dos.h" #include "feature/nodelist/networkstatus.h" #include "feature/nodelist/nodelist.h" #include "feature/relay/routermode.h" @@ -629,6 +630,7 @@ dos_log_heartbeat(void) char *cc_msg = NULL; char *single_hop_client_msg = NULL; char *circ_stats_msg = NULL; + char *hs_dos_intro2_msg = NULL;
/* Stats number coming from relay.c append_cell_to_circuit_queue(). */ tor_asprintf(&circ_stats_msg, @@ -654,17 +656,24 @@ dos_log_heartbeat(void) num_single_hop_client_refused); }
+ /* HS DoS stats. */ + tor_asprintf(&hs_dos_intro2_msg, + " %" PRIu64 " INTRODUCE2 rejected.", + hs_dos_get_intro2_rejected_count()); + log_notice(LD_HEARTBEAT, - "DoS mitigation since startup:%s%s%s%s", + "DoS mitigation since startup:%s%s%s%s%s", circ_stats_msg, (cc_msg != NULL) ? cc_msg : " [cc not enabled]", (conn_msg != NULL) ? conn_msg : " [conn not enabled]", - (single_hop_client_msg != NULL) ? single_hop_client_msg : ""); + (single_hop_client_msg != NULL) ? single_hop_client_msg : "", + (hs_dos_intro2_msg != NULL) ? hs_dos_intro2_msg : "");
tor_free(conn_msg); tor_free(cc_msg); tor_free(single_hop_client_msg); tor_free(circ_stats_msg); + tor_free(hs_dos_intro2_msg); return; }
diff --git a/src/feature/hs/hs_dos.c b/src/feature/hs/hs_dos.c index 81041475e..d36ee97e6 100644 --- a/src/feature/hs/hs_dos.c +++ b/src/feature/hs/hs_dos.c @@ -206,6 +206,13 @@ hs_dos_can_send_intro2(or_circuit_t *s_intro_circ) return true; }
+/* Return rolling count of rejected INTRO2. */ +uint64_t +hs_dos_get_intro2_rejected_count(void) +{ + return intro2_rejected_count; +} + /* Initialize the onion service Denial of Service subsystem. */ void hs_dos_init(void) diff --git a/src/feature/hs/hs_dos.h b/src/feature/hs/hs_dos.h index ccf4e2717..b9e39aca4 100644 --- a/src/feature/hs/hs_dos.h +++ b/src/feature/hs/hs_dos.h @@ -24,6 +24,9 @@ void hs_dos_consensus_has_changed(const networkstatus_t *ns); bool hs_dos_can_send_intro2(or_circuit_t *s_intro_circ); void hs_dos_setup_default_intro2_defenses(or_circuit_t *circ);
+/* Statistics. */ +uint64_t hs_dos_get_intro2_rejected_count(void); + #ifdef HS_DOS_PRIVATE
#ifdef TOR_UNIT_TESTS