[tor-commits] [tor] branch main updated: metrics: Add a `reason` label to the HS error metrics.
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git at cupani.torproject.org
Tue Mar 7 14:50:29 UTC 2023
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dgoulet pushed a commit to branch main
in repository tor.
The following commit(s) were added to refs/heads/main by this push:
new 16c6788fbc metrics: Add a `reason` label to the HS error metrics.
new 3fa08dc9a7 Merge branch 'tor-gitlab/mr/697'
16c6788fbc is described below
commit 16c6788fbc30cf0a2611dd021d1797931a53a86d
Author: Gabriela Moldovan <gabi at torproject.org>
AuthorDate: Wed Feb 15 14:52:35 2023 +0000
metrics: Add a `reason` label to the HS error metrics.
This adds a `reason` label to the `hs_intro_rejected_intro_req_count` and
`hs_rdv_error_count` metrics introduced in #40755.
Metric look up and intialization is now more a bit more involved. This may be
fine for now, but it will become unwieldy if/when we add more labels (and as
such will need to be refactored).
Also, in the future, we may want to introduce finer grained `reason` labels.
For example, the `invalid_introduce2` label actually covers multiple types of
errors that can happen during the processing of an INTRODUCE2 cell (such as
cell parse errors, replays, decryption errors).
Signed-off-by: Gabriela Moldovan <gabi at torproject.org>
---
changes/ticket40758 | 3 +
src/core/or/circuituse.c | 6 +-
src/feature/hs/hs_circuit.c | 38 ++++++----
src/feature/hs/hs_metrics.c | 132 ++++++++++++++++++++++++++--------
src/feature/hs/hs_metrics.h | 40 ++++++-----
src/feature/hs/hs_metrics_entry.c | 32 +++++++++
src/feature/hs/hs_metrics_entry.h | 34 ++++++++-
src/feature/hs/hs_service.c | 7 +-
src/lib/metrics/metrics_store_entry.c | 20 ++++++
src/lib/metrics/metrics_store_entry.h | 3 +
src/test/test_hs_metrics.c | 19 +++--
src/test/test_hs_service.c | 92 ++++++++++++++++++++++--
12 files changed, 345 insertions(+), 81 deletions(-)
diff --git a/changes/ticket40758 b/changes/ticket40758
new file mode 100644
index 0000000000..e6981d0e2b
--- /dev/null
+++ b/changes/ticket40758
@@ -0,0 +1,3 @@
+ o Minor features (metrics):
+ - Add a `reason` label to the HS error metrics.
+ Closes ticket 40758.
diff --git a/src/core/or/circuituse.c b/src/core/or/circuituse.c
index 421d3662af..77c5deaafb 100644
--- a/src/core/or/circuituse.c
+++ b/src/core/or/circuituse.c
@@ -1753,7 +1753,8 @@ circuit_build_failed(origin_circuit_t *circ)
/* If the path failed on an RP, retry it. */
if (TO_CIRCUIT(circ)->purpose == CIRCUIT_PURPOSE_S_CONNECT_REND) {
- hs_metrics_failed_rdv(&circ->hs_ident->identity_pk);
+ hs_metrics_failed_rdv(&circ->hs_ident->identity_pk,
+ HS_METRICS_ERR_RDV_PATH);
hs_circ_retry_service_rendezvous_point(circ);
}
@@ -1866,7 +1867,8 @@ circuit_build_failed(origin_circuit_t *circ)
escaped(build_state_get_exit_nickname(circ->build_state)),
failed_at_last_hop?"last":"non-last");
- hs_metrics_failed_rdv(&circ->hs_ident->identity_pk);
+ hs_metrics_failed_rdv(&circ->hs_ident->identity_pk,
+ HS_METRICS_ERR_RDV_RP_CONN_FAILURE);
hs_circ_retry_service_rendezvous_point(circ);
break;
/* default:
diff --git a/src/feature/hs/hs_circuit.c b/src/feature/hs/hs_circuit.c
index bf8a2f3382..006ba964fe 100644
--- a/src/feature/hs/hs_circuit.c
+++ b/src/feature/hs/hs_circuit.c
@@ -494,7 +494,10 @@ retry_service_rendezvous_point(const origin_circuit_t *circ)
if (new_circ == NULL) {
log_warn(LD_REND, "Failed to launch rendezvous circuit to %s",
safe_str_client(extend_info_describe(bstate->chosen_exit)));
- hs_metrics_failed_rdv(&circ->hs_ident->identity_pk);
+
+ hs_metrics_failed_rdv(&circ->hs_ident->identity_pk,
+ HS_METRICS_ERR_RDV_RETRY);
+
goto done;
}
@@ -832,7 +835,6 @@ hs_circ_service_rp_has_opened(const hs_service_t *service,
{
size_t payload_len;
uint8_t payload[RELAY_PAYLOAD_SIZE] = {0};
- int reason = 0;
tor_assert(service);
tor_assert(circ);
@@ -864,33 +866,34 @@ hs_circ_service_rp_has_opened(const hs_service_t *service,
payload_len = HS_LEGACY_RENDEZVOUS_CELL_SIZE;
}
- if ((reason = relay_send_command_from_edge(CONTROL_CELL_ID, TO_CIRCUIT(circ),
- RELAY_COMMAND_RENDEZVOUS1,
- (const char *) payload,
- payload_len,
- circ->cpath->prev)) < 0) {
+ if (relay_send_command_from_edge(CONTROL_CELL_ID, TO_CIRCUIT(circ),
+ RELAY_COMMAND_RENDEZVOUS1,
+ (const char *) payload,
+ payload_len,
+ circ->cpath->prev) < 0) {
/* On error, circuit is closed. */
log_warn(LD_REND, "Unable to send RENDEZVOUS1 cell on circuit %u "
"for service %s",
TO_CIRCUIT(circ)->n_circ_id,
safe_str_client(service->onion_address));
+
+ hs_metrics_failed_rdv(&service->keys.identity_pk,
+ HS_METRICS_ERR_RDV_RENDEZVOUS1);
goto done;
}
/* Setup end-to-end rendezvous circuit between the client and us. */
- if ((reason = hs_circuit_setup_e2e_rend_circ(circ,
+ if (hs_circuit_setup_e2e_rend_circ(circ,
circ->hs_ident->rendezvous_ntor_key_seed,
sizeof(circ->hs_ident->rendezvous_ntor_key_seed),
- 1)) < 0) {
+ 1) < 0) {
log_warn(LD_GENERAL, "Failed to setup circ");
+
+ hs_metrics_failed_rdv(&service->keys.identity_pk, HS_METRICS_ERR_RDV_E2E);
goto done;
}
done:
- if (reason < 0) {
- hs_metrics_failed_rdv(&service->keys.identity_pk);
- }
-
memwipe(payload, 0, sizeof(payload));
}
@@ -1004,12 +1007,15 @@ hs_circ_handle_introduce2(const hs_service_t *service,
data.replay_cache = ip->replay_cache;
data.cc_enabled = 0;
- if (get_subcredential_for_handling_intro2_cell(service,
- &data, subcredential)) {
+ if (get_subcredential_for_handling_intro2_cell(service, &data,
+ subcredential)) {
+ hs_metrics_reject_intro_req(service,
+ HS_METRICS_ERR_INTRO_REQ_SUBCREDENTIAL);
goto done;
}
if (hs_cell_parse_introduce2(&data, circ, service) < 0) {
+ hs_metrics_reject_intro_req(service, HS_METRICS_ERR_INTRO_REQ_INTRODUCE2);
goto done;
}
@@ -1027,6 +1033,8 @@ hs_circ_handle_introduce2(const hs_service_t *service,
log_info(LD_REND, "We received an INTRODUCE2 cell with same REND_COOKIE "
"field %ld seconds ago. Dropping cell.",
(long int) elapsed);
+ hs_metrics_reject_intro_req(service,
+ HS_METRICS_ERR_INTRO_REQ_INTRODUCE2_REPLAY);
goto done;
}
diff --git a/src/feature/hs/hs_metrics.c b/src/feature/hs/hs_metrics.c
index 854cd294c4..4c6d957cf8 100644
--- a/src/feature/hs/hs_metrics.c
+++ b/src/feature/hs/hs_metrics.c
@@ -13,6 +13,7 @@
#include "lib/malloc/malloc.h"
#include "lib/container/smartlist.h"
#include "lib/metrics/metrics_store.h"
+#include "lib/log/util_bug.h"
#include "feature/hs/hs_metrics.h"
#include "feature/hs/hs_metrics_entry.h"
@@ -29,51 +30,118 @@ port_to_str(const uint16_t port)
return buf;
}
-/** Initialize a metrics store for the given service.
+/** Add a new metric to the metrics store of the service.
*
- * Essentially, this goes over the base_metrics array and adds them all to the
- * store set with their label(s) if any. */
+ * <b>metric</b> is the index of the metric in the <b>base_metrics</b> array.
+ */
static void
-init_store(hs_service_t *service)
+add_metric_with_labels(hs_service_t *service, hs_metrics_key_t metric,
+ bool port_as_label, uint16_t port)
{
metrics_store_t *store;
+ const char **error_reasons = NULL;
+ size_t num_error_reasons = 0;
tor_assert(service);
+ if (BUG(metric >= base_metrics_size))
+ return;
+
store = service->metrics.store;
+ /* Check whether the current metric is an error metric, because error metrics
+ * require an additional `reason` label. */
+ switch (metric) {
+ case HS_METRICS_NUM_REJECTED_INTRO_REQ:
+ error_reasons = hs_metrics_intro_req_error_reasons;
+ num_error_reasons = hs_metrics_intro_req_error_reasons_size;
+ break;
+ case HS_METRICS_NUM_FAILED_RDV:
+ error_reasons = hs_metrics_rend_error_reasons;
+ num_error_reasons = hs_metrics_rend_error_reasons_size;
+ break;
+ /* Fall through for all other metrics, as they don't need a
+ * reason label. */
+ case HS_METRICS_NUM_INTRODUCTIONS: FALLTHROUGH;
+ case HS_METRICS_APP_WRITE_BYTES: FALLTHROUGH;
+ case HS_METRICS_APP_READ_BYTES: FALLTHROUGH;
+ case HS_METRICS_NUM_ESTABLISHED_RDV: FALLTHROUGH;
+ case HS_METRICS_NUM_RDV: FALLTHROUGH;
+ case HS_METRICS_NUM_ESTABLISHED_INTRO: FALLTHROUGH;
+ default:
+ break;
+ }
+
+ /* We don't need a reason label for this metric */
+ if (!num_error_reasons) {
+ metrics_store_entry_t *entry = metrics_store_add(
+ store, base_metrics[metric].type, base_metrics[metric].name,
+ base_metrics[metric].help);
+
+ metrics_store_entry_add_label(entry,
+ metrics_format_label("onion", service->onion_address));
+
+ if (port_as_label) {
+ metrics_store_entry_add_label(entry,
+ metrics_format_label("port", port_to_str(port)));
+ }
+
+ return;
+ }
+
+ tor_assert(error_reasons);
+
+ /* Add entries with reason as label. We need one metric line per
+ * reason. */
+ for (size_t i = 0; i < num_error_reasons; ++i) {
+ metrics_store_entry_t *entry =
+ metrics_store_add(store, base_metrics[metric].type,
+ base_metrics[metric].name,
+ base_metrics[metric].help);
+ /* Add labels to the entry. */
+ metrics_store_entry_add_label(entry,
+ metrics_format_label("onion", service->onion_address));
+ metrics_store_entry_add_label(entry,
+ metrics_format_label("reason", error_reasons[i]));
+
+ if (port_as_label) {
+ metrics_store_entry_add_label(entry,
+ metrics_format_label("port", port_to_str(port)));
+ }
+ }
+}
+
+/** Initialize a metrics store for the given service.
+ *
+ * Essentially, this goes over the base_metrics array and adds them all to the
+ * store set with their label(s) if any. */
+static void
+init_store(hs_service_t *service)
+{
+ tor_assert(service);
+
for (size_t i = 0; i < base_metrics_size; ++i) {
/* Add entries with port as label. We need one metric line per port. */
if (base_metrics[i].port_as_label && service->config.ports) {
SMARTLIST_FOREACH_BEGIN(service->config.ports,
const hs_port_config_t *, p) {
- metrics_store_entry_t *entry =
- metrics_store_add(store, base_metrics[i].type, base_metrics[i].name,
- base_metrics[i].help);
-
- /* Add labels to the entry. */
- metrics_store_entry_add_label(entry,
- metrics_format_label("onion", service->onion_address));
- metrics_store_entry_add_label(entry,
- metrics_format_label("port", port_to_str(p->virtual_port)));
+ add_metric_with_labels(service, base_metrics[i].key, true,
+ p->virtual_port);
} SMARTLIST_FOREACH_END(p);
} else {
- metrics_store_entry_t *entry =
- metrics_store_add(store, base_metrics[i].type, base_metrics[i].name,
- base_metrics[i].help);
- metrics_store_entry_add_label(entry,
- metrics_format_label("onion", service->onion_address));
+ add_metric_with_labels(service, base_metrics[i].key, false, 0);
}
}
}
/** Update the metrics key entry in the store in the given service. The port,
- * if non 0, is used to find the correct metrics entry. The value n is the
- * value used to update the entry. */
+ * if non 0, and the reason label, if non NULL, are used to find the correct
+ * metrics entry. The value n is the value used to update the entry. */
void
hs_metrics_update_by_service(const hs_metrics_key_t key,
const hs_service_t *service,
- uint16_t port, int64_t n)
+ uint16_t port, const char *reason,
+ int64_t n)
{
tor_assert(service);
@@ -89,25 +157,29 @@ hs_metrics_update_by_service(const hs_metrics_key_t key,
* XXX: This is not the most optimal due to the string format. Maybe at some
* point turn this into a kvline and a map in a metric entry? */
SMARTLIST_FOREACH_BEGIN(entries, metrics_store_entry_t *, entry) {
- if (port == 0 ||
- metrics_store_entry_has_label(entry,
- metrics_format_label("port", port_to_str(port)))) {
- metrics_store_entry_update(entry, n);
- break;
+ if ((port == 0 ||
+ metrics_store_entry_has_label(
+ entry, metrics_format_label("port", port_to_str(port)))) &&
+ ((!reason || metrics_store_entry_has_label(
+ entry, metrics_format_label("reason", reason))))) {
+ metrics_store_entry_update(entry, n);
+ break;
}
} SMARTLIST_FOREACH_END(entry);
}
/** Update the metrics key entry in the store of a service identified by the
- * given identity public key. The port, if non 0, is used to find the correct
- * metrics entry. The value n is the value used to update the entry.
+ * given identity public key. The port, if non 0, and the reason label, if non
+ * NULL, are used to find the correct metrics entry. The value n is the value
+ * used to update the entry.
*
* This is used by callsite that have access to the key but not the service
* object so an extra lookup is done to find the service. */
void
hs_metrics_update_by_ident(const hs_metrics_key_t key,
const ed25519_public_key_t *ident_pk,
- const uint16_t port, int64_t n)
+ const uint16_t port, const char *reason,
+ int64_t n)
{
hs_service_t *service;
@@ -121,7 +193,7 @@ hs_metrics_update_by_ident(const hs_metrics_key_t key,
* service and thus the only way to know is to lookup the service. */
return;
}
- hs_metrics_update_by_service(key, service, port, n);
+ hs_metrics_update_by_service(key, service, port, reason, n);
}
/** Return a list of all the onion service metrics stores. This is the
diff --git a/src/feature/hs/hs_metrics.h b/src/feature/hs/hs_metrics.h
index db02fefcea..a32f76e3bc 100644
--- a/src/feature/hs/hs_metrics.h
+++ b/src/feature/hs/hs_metrics.h
@@ -26,53 +26,59 @@ const smartlist_t *hs_metrics_get_stores(void);
/* Metrics Update. */
void hs_metrics_update_by_ident(const hs_metrics_key_t key,
const ed25519_public_key_t *ident_pk,
- const uint16_t port, int64_t n);
+ const uint16_t port, const char *reason,
+ int64_t n);
void hs_metrics_update_by_service(const hs_metrics_key_t key,
const hs_service_t *service,
- uint16_t port, int64_t n);
+ uint16_t port, const char *reason,
+ int64_t n);
/** New introducion request received. */
#define hs_metrics_new_introduction(s) \
- hs_metrics_update_by_service(HS_METRICS_NUM_INTRODUCTIONS, (s), 0, 1)
+ hs_metrics_update_by_service(HS_METRICS_NUM_INTRODUCTIONS, (s), 0, NULL, 1)
/** Introducion request rejected. */
-#define hs_metrics_reject_intro_req(s) \
- hs_metrics_update_by_service(HS_METRICS_NUM_REJECTED_INTRO_REQ, (s), 0, 1)
+#define hs_metrics_reject_intro_req(s, reason) \
+ hs_metrics_update_by_service(HS_METRICS_NUM_REJECTED_INTRO_REQ, (s), 0, \
+ (reason), 1)
/** Number of bytes written to the application from the service. */
-#define hs_metrics_app_write_bytes(i, port, n) \
- hs_metrics_update_by_ident(HS_METRICS_APP_WRITE_BYTES, (i), (port), (n))
+#define hs_metrics_app_write_bytes(i, port, n) \
+ hs_metrics_update_by_ident(HS_METRICS_APP_WRITE_BYTES, (i), (port), NULL, \
+ (n))
/** Number of bytes read from the application to the service. */
#define hs_metrics_app_read_bytes(i, port, n) \
- hs_metrics_update_by_ident(HS_METRICS_APP_READ_BYTES, (i), (port), (n))
+ hs_metrics_update_by_ident(HS_METRICS_APP_READ_BYTES, (i), (port), NULL, (n))
/** Newly established rendezvous. This is called as soon as the circuit purpose
* is REND_JOINED which is when the RENDEZVOUS2 cell is sent. */
#define hs_metrics_new_established_rdv(s) \
- hs_metrics_update_by_service(HS_METRICS_NUM_ESTABLISHED_RDV, (s), 0, 1)
+ hs_metrics_update_by_service(HS_METRICS_NUM_ESTABLISHED_RDV, (s), 0, NULL, 1)
/** New rendezvous circuit failure. */
-#define hs_metrics_failed_rdv(i) \
- hs_metrics_update_by_ident(HS_METRICS_NUM_FAILED_RDV, (i), 0, 1)
+#define hs_metrics_failed_rdv(i, reason) \
+ hs_metrics_update_by_ident(HS_METRICS_NUM_FAILED_RDV, (i), 0, (reason), 1)
/** Established rendezvous closed. This is called when the circuit in
* REND_JOINED state is marked for close. */
#define hs_metrics_close_established_rdv(i) \
- hs_metrics_update_by_ident(HS_METRICS_NUM_ESTABLISHED_RDV, (i), 0, -1)
+ hs_metrics_update_by_ident(HS_METRICS_NUM_ESTABLISHED_RDV, (i), 0, NULL, -1)
/** New rendezvous circuit being launched. */
#define hs_metrics_new_rdv(i) \
- hs_metrics_update_by_ident(HS_METRICS_NUM_RDV, (i), 0, 1)
+ hs_metrics_update_by_ident(HS_METRICS_NUM_RDV, (i), 0, NULL, 1)
/** New introduction circuit has been established. This is called when the
* INTRO_ESTABLISHED has been received by the service. */
-#define hs_metrics_new_established_intro(s) \
- hs_metrics_update_by_service(HS_METRICS_NUM_ESTABLISHED_INTRO, (s), 0, 1)
+#define hs_metrics_new_established_intro(s) \
+ hs_metrics_update_by_service(HS_METRICS_NUM_ESTABLISHED_INTRO, (s), 0, \
+ NULL, 1)
/** Established introduction circuit closes. This is called when
* INTRO_ESTABLISHED circuit is marked for close. */
-#define hs_metrics_close_established_intro(i) \
- hs_metrics_update_by_ident(HS_METRICS_NUM_ESTABLISHED_INTRO, (i), 0, -1)
+#define hs_metrics_close_established_intro(i) \
+ hs_metrics_update_by_ident(HS_METRICS_NUM_ESTABLISHED_INTRO, (i), 0, NULL, \
+ -1)
#endif /* !defined(TOR_FEATURE_HS_HS_METRICS_H) */
diff --git a/src/feature/hs/hs_metrics_entry.c b/src/feature/hs/hs_metrics_entry.c
index 2d4d3ce4f6..9181d770e0 100644
--- a/src/feature/hs/hs_metrics_entry.c
+++ b/src/feature/hs/hs_metrics_entry.c
@@ -8,9 +8,13 @@
#define HS_METRICS_ENTRY_PRIVATE
+#include <stddef.h>
+
#include "orconfig.h"
#include "lib/cc/compat_compiler.h"
+#include "lib/log/log.h"
+#include "lib/log/util_bug.h"
#include "feature/hs/hs_metrics_entry.h"
@@ -75,3 +79,31 @@ const hs_metrics_entry_t base_metrics[] =
/** Size of base_metrics array that is number of entries. */
const size_t base_metrics_size = ARRAY_LENGTH(base_metrics);
+
+/** Possible values for the reason label of the
+ * hs_intro_rejected_intro_req_count metric. */
+const char *hs_metrics_intro_req_error_reasons[] =
+{
+ HS_METRICS_ERR_INTRO_REQ_BAD_AUTH_KEY,
+ HS_METRICS_ERR_INTRO_REQ_INTRODUCE2,
+ HS_METRICS_ERR_INTRO_REQ_SUBCREDENTIAL,
+ HS_METRICS_ERR_INTRO_REQ_INTRODUCE2_REPLAY,
+};
+
+/** The number of entries in the hs_metrics_intro_req_error_reasons array. */
+const size_t hs_metrics_intro_req_error_reasons_size =
+ ARRAY_LENGTH(hs_metrics_intro_req_error_reasons);
+
+/** Possible values for the reason label of the hs_rdv_error_count metric. */
+const char *hs_metrics_rend_error_reasons[] =
+{
+ HS_METRICS_ERR_RDV_RP_CONN_FAILURE,
+ HS_METRICS_ERR_RDV_PATH,
+ HS_METRICS_ERR_RDV_RENDEZVOUS1,
+ HS_METRICS_ERR_RDV_E2E,
+ HS_METRICS_ERR_RDV_RETRY,
+};
+
+/** The number of entries in the hs_metrics_rend_error_reasons array. */
+const size_t hs_metrics_rend_error_reasons_size =
+ ARRAY_LENGTH(hs_metrics_rend_error_reasons);
diff --git a/src/feature/hs/hs_metrics_entry.h b/src/feature/hs/hs_metrics_entry.h
index 2f732aa614..07693972c0 100644
--- a/src/feature/hs/hs_metrics_entry.h
+++ b/src/feature/hs/hs_metrics_entry.h
@@ -13,6 +13,33 @@
#include "lib/metrics/metrics_common.h"
+/* Possible values for the reason label of the
+ * hs_intro_rejected_intro_req_count metric. */
+/** The hidden service received an unknown introduction auth key. */
+#define HS_METRICS_ERR_INTRO_REQ_BAD_AUTH_KEY "bad_auth_key"
+/** The hidden service received a malformed INTRODUCE2 cell. */
+#define HS_METRICS_ERR_INTRO_REQ_INTRODUCE2 "invalid_introduce2"
+/** The hidden service does not have the necessary subcredential. */
+#define HS_METRICS_ERR_INTRO_REQ_SUBCREDENTIAL "subcredential"
+/** The hidden service received an INTRODUCE2 replay. */
+#define HS_METRICS_ERR_INTRO_REQ_INTRODUCE2_REPLAY "replay"
+
+/* Possible values for the reason label of the hs_rdv_error_count metric. */
+/** The hidden service failed to connect to the rendezvous point. */
+#define HS_METRICS_ERR_RDV_RP_CONN_FAILURE "rp_conn_failure"
+/** The hidden service failed to build a circuit to the rendezvous point due
+ * to an invalid selected path. */
+#define HS_METRICS_ERR_RDV_PATH "invalid_path"
+/** The hidden service failed to send the RENDEZVOUS1 cell on rendezvous
+ * circuit. */
+#define HS_METRICS_ERR_RDV_RENDEZVOUS1 "rendezvous1"
+/** The hidden service failed to set up an end-to-end rendezvous circuit to
+ * the client. */
+#define HS_METRICS_ERR_RDV_E2E "e2e_circ"
+/** The hidden service reattempted to connect to the rendezvous point by
+ * launching a new circuit to it, but failed */
+#define HS_METRICS_ERR_RDV_RETRY "retry"
+
/** Metrics key which are used as an index in the main base metrics array. */
typedef enum {
/** Number of introduction requests. */
@@ -50,6 +77,11 @@ typedef struct hs_metrics_entry_t {
extern const hs_metrics_entry_t base_metrics[];
extern const size_t base_metrics_size;
-#endif /* defined(HS_METRICS_ENTRY_PRIVATE) */
+extern const char *hs_metrics_intro_req_error_reasons[];
+extern const size_t hs_metrics_intro_req_error_reasons_size;
+extern const char *hs_metrics_rend_error_reasons[];
+extern const size_t hs_metrics_rend_error_reasons_size;
+
+#endif /* defined(HS_METRICS_ENTRY_PRIVATE) */
#endif /* !defined(TOR_FEATURE_HS_METRICS_ENTRY_H) */
diff --git a/src/feature/hs/hs_service.c b/src/feature/hs/hs_service.c
index 9c792b71c7..b5a69b8d59 100644
--- a/src/feature/hs/hs_service.c
+++ b/src/feature/hs/hs_service.c
@@ -42,6 +42,7 @@
#include "feature/hs/hs_ident.h"
#include "feature/hs/hs_intropoint.h"
#include "feature/hs/hs_metrics.h"
+#include "feature/hs/hs_metrics_entry.h"
#include "feature/hs/hs_service.h"
#include "feature/hs/hs_stats.h"
#include "feature/hs/hs_ob.h"
@@ -3508,6 +3509,9 @@ service_handle_introduce2(origin_circuit_t *circ, const uint8_t *payload,
"an INTRODUCE2 cell on circuit %u for service %s",
TO_CIRCUIT(circ)->n_circ_id,
safe_str_client(service->onion_address));
+
+ hs_metrics_reject_intro_req(service,
+ HS_METRICS_ERR_INTRO_REQ_BAD_AUTH_KEY);
goto err;
}
/* If we have an IP object, we MUST have a descriptor object. */
@@ -3524,9 +3528,6 @@ service_handle_introduce2(origin_circuit_t *circ, const uint8_t *payload,
return 0;
err:
- if (service) {
- hs_metrics_reject_intro_req(service);
- }
return -1;
}
diff --git a/src/lib/metrics/metrics_store_entry.c b/src/lib/metrics/metrics_store_entry.c
index 482ec8d7d9..971d9379bd 100644
--- a/src/lib/metrics/metrics_store_entry.c
+++ b/src/lib/metrics/metrics_store_entry.c
@@ -127,3 +127,23 @@ metrics_store_entry_has_label(const metrics_store_entry_t *entry,
return smartlist_contains_string(entry->labels, label);
}
+
+/** Return the first entry that has the given label, or NULL if none
+ * of the entries have the label. */
+metrics_store_entry_t *
+metrics_store_find_entry_with_label(const smartlist_t *entries,
+ const char *label)
+{
+ tor_assert(entries);
+ tor_assert(label);
+
+ SMARTLIST_FOREACH_BEGIN(entries, metrics_store_entry_t *, entry) {
+ tor_assert(entry);
+
+ if (smartlist_contains_string(entry->labels, label)) {
+ return entry;
+ }
+ } SMARTLIST_FOREACH_END(entry);
+
+ return NULL;
+}
diff --git a/src/lib/metrics/metrics_store_entry.h b/src/lib/metrics/metrics_store_entry.h
index e4dc7a8b9a..0e09e099fe 100644
--- a/src/lib/metrics/metrics_store_entry.h
+++ b/src/lib/metrics/metrics_store_entry.h
@@ -12,6 +12,7 @@
#include "lib/cc/torint.h"
#include "lib/metrics/metrics_common.h"
+#include "lib/container/smartlist.h"
#ifdef METRICS_STORE_ENTRY_PRIVATE
@@ -57,6 +58,8 @@ void metrics_store_entry_free_(metrics_store_entry_t *entry);
int64_t metrics_store_entry_get_value(const metrics_store_entry_t *entry);
bool metrics_store_entry_has_label(const metrics_store_entry_t *entry,
const char *label);
+metrics_store_entry_t *metrics_store_find_entry_with_label(
+ const smartlist_t *entries, const char *label);
/* Modifiers. */
void metrics_store_entry_add_label(metrics_store_entry_t *entry,
diff --git a/src/test/test_hs_metrics.c b/src/test/test_hs_metrics.c
index 03f6aedbb4..b7c0ab53da 100644
--- a/src/test/test_hs_metrics.c
+++ b/src/test/test_hs_metrics.c
@@ -40,7 +40,7 @@ test_metrics(void *arg)
/* Update entry by identifier. */
hs_metrics_update_by_ident(HS_METRICS_NUM_INTRODUCTIONS,
- &service->keys.identity_pk, 0, 42);
+ &service->keys.identity_pk, 0, NULL, 42);
/* Confirm the entry value. */
const smartlist_t *entries = metrics_store_get_all(service->metrics.store,
@@ -53,24 +53,29 @@ test_metrics(void *arg)
/* Update entry by service now. */
hs_metrics_update_by_service(HS_METRICS_NUM_INTRODUCTIONS,
- service, 0, 42);
+ service, 0, NULL, 42);
tt_int_op(metrics_store_entry_get_value(entry), OP_EQ, 84);
+ const char *reason = HS_METRICS_ERR_INTRO_REQ_BAD_AUTH_KEY;
+
/* Update tor_hs_intro_rejected_intro_req_count */
hs_metrics_update_by_ident(HS_METRICS_NUM_REJECTED_INTRO_REQ,
- &service->keys.identity_pk, 0, 112);
+ &service->keys.identity_pk, 0, reason, 112);
entries = metrics_store_get_all(service->metrics.store,
"tor_hs_intro_rejected_intro_req_count");
tt_assert(entries);
- tt_int_op(smartlist_len(entries), OP_EQ, 1);
- entry = smartlist_get(entries, 0);
+ tt_int_op(smartlist_len(entries), OP_EQ,
+ hs_metrics_intro_req_error_reasons_size);
+
+ entry = metrics_store_find_entry_with_label(
+ entries, "reason=\"bad_auth_key\"");
tt_assert(entry);
tt_int_op(metrics_store_entry_get_value(entry), OP_EQ, 112);
/* Update tor_hs_intro_rejected_intro_req_count entry by service now. */
- hs_metrics_update_by_service(HS_METRICS_NUM_REJECTED_INTRO_REQ,
- service, 0, 10);
+ hs_metrics_update_by_service(HS_METRICS_NUM_REJECTED_INTRO_REQ, service, 0,
+ reason, 10);
tt_int_op(metrics_store_entry_get_value(entry), OP_EQ, 122);
done:
diff --git a/src/test/test_hs_service.c b/src/test/test_hs_service.c
index 7e675620bd..03a4800f25 100644
--- a/src/test/test_hs_service.c
+++ b/src/test/test_hs_service.c
@@ -1229,14 +1229,34 @@ test_bad_introduce2(void *arg)
"an INTRODUCE2 cell on circuit");
teardown_capture_of_logs();
- /* Make sure the tor_hs_intro_rejected_intro_req_count metric was
- * incremented */
entries = metrics_store_get_all(service->metrics.store,
"tor_hs_intro_rejected_intro_req_count");
tt_assert(entries);
- tt_int_op(smartlist_len(entries), OP_EQ, 1);
- entry = smartlist_get(entries, 0);
+ /* There are `hs_metrics_intro_req_size` entries (one for each
+ * possible `reason` label value). */
+ tt_int_op(smartlist_len(entries), OP_EQ,
+ hs_metrics_intro_req_error_reasons_size);
+
+ /* Make sure the tor_hs_intro_rejected_intro_req_count metric was
+ * only incremented for reason HS_METRICS_ERR_INTRO_REQ_BAD_AUTH_KEY. */
+ for (size_t i = 0; i < hs_metrics_intro_req_error_reasons_size; ++i) {
+ const char *reason = hs_metrics_intro_req_error_reasons[i];
+
+ if (!strcmp(reason, HS_METRICS_ERR_INTRO_REQ_BAD_AUTH_KEY)) {
+ continue;
+ }
+
+ entry = metrics_store_find_entry_with_label(
+ entries,
+ metrics_format_label("reason", reason));
+ tt_assert(entry);
+ tt_int_op(metrics_store_entry_get_value(entry), OP_EQ, 0);
+ }
+
+ entry = metrics_store_find_entry_with_label(
+ entries,
+ metrics_format_label("reason", HS_METRICS_ERR_INTRO_REQ_BAD_AUTH_KEY));
tt_assert(entry);
tt_int_op(metrics_store_entry_get_value(entry), OP_EQ, 1);
@@ -1257,8 +1277,31 @@ test_bad_introduce2(void *arg)
tt_u64_op(ip->introduce2_count, OP_EQ, 0);
/* Make sure the tor_hs_intro_rejected_intro_req_count metric was incremented
- * a second time */
- tt_int_op(metrics_store_entry_get_value(entry), OP_EQ, 2);
+ * a second time, this time, with reason="invalid_introduce2_cell". */
+ entry = metrics_store_find_entry_with_label(
+ entries,
+ metrics_format_label("reason", HS_METRICS_ERR_INTRO_REQ_INTRODUCE2));
+ tt_assert(entry);
+ tt_int_op(metrics_store_entry_get_value(entry), OP_EQ, 1);
+
+ /* The metric entries with other reason labels are unaffected */
+ entry = metrics_store_find_entry_with_label(
+ entries,
+ metrics_format_label("reason", HS_METRICS_ERR_INTRO_REQ_SUBCREDENTIAL));
+ tt_assert(entry);
+ tt_int_op(metrics_store_entry_get_value(entry), OP_EQ, 0);
+
+ entry = metrics_store_find_entry_with_label(
+ entries, metrics_format_label(
+ "reason", HS_METRICS_ERR_INTRO_REQ_INTRODUCE2_REPLAY));
+ tt_assert(entry);
+ tt_int_op(metrics_store_entry_get_value(entry), OP_EQ, 0);
+
+ entry = metrics_store_find_entry_with_label(
+ entries,
+ metrics_format_label("reason", HS_METRICS_ERR_INTRO_REQ_BAD_AUTH_KEY));
+ tt_assert(entry);
+ tt_int_op(metrics_store_entry_get_value(entry), OP_EQ, 1);
done:
or_state_free(dummy_state);
@@ -2293,6 +2336,8 @@ test_intro2_handling(void *arg)
/* Disable onionbalance */
x_service.config.ob_master_pubkeys = NULL;
x_service.state.replay_cache_rend_cookie = replaycache_new(0,0);
+ /* Initialize the metrics store */
+ hs_metrics_service_init(&x_service);
/* Create subcredential for x: */
ed25519_keypair_t x_identity_keypair;
@@ -2456,6 +2501,20 @@ test_intro2_handling(void *arg)
(uint8_t*)relay_payload, relay_payload_len);
tt_int_op(retval, OP_EQ, 0);
+ /* We haven't encountered any errors yet, so all the introduction request
+ * error metrics should be 0 */
+ const smartlist_t *entries = metrics_store_get_all(
+ x_service.metrics.store, "tor_hs_intro_rejected_intro_req_count");
+ const metrics_store_entry_t *entry = NULL;
+
+ for (size_t i = 0; i < hs_metrics_intro_req_error_reasons_size; ++i) {
+ entry = metrics_store_find_entry_with_label(
+ entries,
+ metrics_format_label("reason", hs_metrics_intro_req_error_reasons[i]));
+ tt_assert(entry);
+ tt_int_op(metrics_store_entry_get_value(entry), OP_EQ, 0);
+ }
+
/* ************************************************************ */
/* Act IV:
@@ -2473,6 +2532,11 @@ test_intro2_handling(void *arg)
tt_int_op(retval, OP_EQ, -1);
expect_log_msg_containing("with the same ENCRYPTED section");
teardown_capture_of_logs();
+ entry = metrics_store_find_entry_with_label(
+ entries,
+ metrics_format_label("reason", HS_METRICS_ERR_INTRO_REQ_INTRODUCE2));
+ tt_assert(entry);
+ tt_int_op(metrics_store_entry_get_value(entry), OP_EQ, 1);
/* Now cleanup the intro point replay cache but not the service replay cache
and see that this one triggers this time. */
@@ -2487,6 +2551,12 @@ test_intro2_handling(void *arg)
expect_log_msg_containing("with same REND_COOKIE");
teardown_capture_of_logs();
+ entry = metrics_store_find_entry_with_label(
+ entries, metrics_format_label(
+ "reason", HS_METRICS_ERR_INTRO_REQ_INTRODUCE2_REPLAY));
+ tt_assert(entry);
+ tt_int_op(metrics_store_entry_get_value(entry), OP_EQ, 1);
+
/* Now just to make sure cleanup both replay caches and make sure that the
cell gets through */
replaycache_free(x_ip->replay_cache);
@@ -2499,6 +2569,9 @@ test_intro2_handling(void *arg)
(uint8_t*)relay_payload, relay_payload_len);
tt_int_op(retval, OP_EQ, 0);
+ /* This time, the error metric was *not* incremented */
+ tt_int_op(metrics_store_entry_get_value(entry), OP_EQ, 1);
+
/* As a final thing, create an INTRODUCE1 cell from Alice to X using Y's
* subcred (should fail since Y is just another instance and not the frontend
* service!) */
@@ -2515,7 +2588,13 @@ test_intro2_handling(void *arg)
intro_circ, x_ip,
&y_subcred,
(uint8_t*)relay_payload, relay_payload_len);
+
tt_int_op(retval, OP_EQ, -1);
+ entry = metrics_store_find_entry_with_label(
+ entries,
+ metrics_format_label("reason", HS_METRICS_ERR_INTRO_REQ_INTRODUCE2));
+ tt_assert(entry);
+ tt_int_op(metrics_store_entry_get_value(entry), OP_EQ, 2);
done:
/* Start cleaning up X */
@@ -2524,6 +2603,7 @@ test_intro2_handling(void *arg)
tor_free(x_service.state.ob_subcreds);
service_descriptor_free(x_service.desc_current);
service_descriptor_free(x_service.desc_next);
+ hs_metrics_service_free(&x_service);
service_intro_point_free(x_ip);
/* Clean up Alice */
--
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