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Merge remote-tracking branch 'karsten/bug5823'

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This commit is contained in:
Nick Mathewson 2013-01-19 09:36:55 -05:00
commit c71b7db8f3
5 changed files with 48 additions and 190 deletions
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5
changes/bug5823 Normal file
View File

@ -0,0 +1,5 @@
o Removed featurs:
- Stop exporting estimates of v2 and v3 directory traffic shares
in extrainfo documents. They were unneeded and sometimes inaccurate.
Also stop exporting any v2 directory request statistics. Resolves
ticket 5823.

27
src/or/directory.c
View File

@ -2800,8 +2800,6 @@ directory_handle_command_get(dir_connection_t *conn, const char *headers,
/* v2 or v3 network status fetch. */
smartlist_t *dir_fps = smartlist_new();
int is_v3 = !strcmpstart(url, "/tor/status-vote");
geoip_client_action_t act =
is_v3 ? GEOIP_CLIENT_NETWORKSTATUS : GEOIP_CLIENT_NETWORKSTATUS_V2;
const char *request_type = NULL;
const char *key = url + strlen("/tor/status/");
long lifetime = NETWORKSTATUS_CACHE_LIFETIME;
@ -2851,7 +2849,7 @@ directory_handle_command_get(dir_connection_t *conn, const char *headers,
write_http_status_line(conn, 404, "Consensus not signed by sufficient "
"number of requested authorities");
smartlist_free(dir_fps);
geoip_note_ns_response(act, GEOIP_REJECT_NOT_ENOUGH_SIGS);
geoip_note_ns_response(GEOIP_REJECT_NOT_ENOUGH_SIGS);
tor_free(flavor);
goto done;
}
@ -2870,7 +2868,8 @@ directory_handle_command_get(dir_connection_t *conn, const char *headers,
if (!smartlist_len(dir_fps)) { /* we failed to create/cache cp */
write_http_status_line(conn, 503, "Network status object unavailable");
smartlist_free(dir_fps);
geoip_note_ns_response(act, GEOIP_REJECT_UNAVAILABLE);
if (is_v3)
geoip_note_ns_response(GEOIP_REJECT_UNAVAILABLE);
goto done;
}
@ -2878,13 +2877,15 @@ directory_handle_command_get(dir_connection_t *conn, const char *headers,
write_http_status_line(conn, 404, "Not found");
SMARTLIST_FOREACH(dir_fps, char *, cp, tor_free(cp));
smartlist_free(dir_fps);
geoip_note_ns_response(act, GEOIP_REJECT_NOT_FOUND);
if (is_v3)
geoip_note_ns_response(GEOIP_REJECT_NOT_FOUND);
goto done;
} else if (!smartlist_len(dir_fps)) {
write_http_status_line(conn, 304, "Not modified");
SMARTLIST_FOREACH(dir_fps, char *, cp, tor_free(cp));
smartlist_free(dir_fps);
geoip_note_ns_response(act, GEOIP_REJECT_NOT_MODIFIED);
if (is_v3)
geoip_note_ns_response(GEOIP_REJECT_NOT_MODIFIED);
goto done;
}
@ -2896,24 +2897,24 @@ directory_handle_command_get(dir_connection_t *conn, const char *headers,
write_http_status_line(conn, 503, "Directory busy, try again later");
SMARTLIST_FOREACH(dir_fps, char *, fp, tor_free(fp));
smartlist_free(dir_fps);
geoip_note_ns_response(act, GEOIP_REJECT_BUSY);
if (is_v3)
geoip_note_ns_response(GEOIP_REJECT_BUSY);
goto done;
}
{
if (is_v3) {
struct in_addr in;
tor_addr_t addr;
if (tor_inet_aton((TO_CONN(conn))->address, &in)) {
tor_addr_from_ipv4h(&addr, ntohl(in.s_addr));
geoip_note_client_seen(act, &addr, time(NULL));
geoip_note_ns_response(act, GEOIP_SUCCESS);
geoip_note_client_seen(GEOIP_CLIENT_NETWORKSTATUS, &addr, time(NULL));
geoip_note_ns_response(GEOIP_SUCCESS);
/* Note that a request for a network status has started, so that we
* can measure the download time later on. */
if (conn->dirreq_id)
geoip_start_dirreq(conn->dirreq_id, dlen, act,
DIRREQ_TUNNELED);
geoip_start_dirreq(conn->dirreq_id, dlen, DIRREQ_TUNNELED);
else
geoip_start_dirreq(TO_CONN(conn)->global_identifier, dlen, act,
geoip_start_dirreq(TO_CONN(conn)->global_identifier, dlen,
DIRREQ_DIRECT);
}
}

194
src/or/geoip.c
View File

@ -38,7 +38,6 @@ typedef struct geoip_ipv6_entry_t {
/** A per-country record for GeoIP request history. */
typedef struct geoip_country_t {
char countrycode[3];
uint32_t n_v2_ns_requests;
uint32_t n_v3_ns_requests;
} geoip_country_t;
@ -515,67 +514,6 @@ client_history_clear(void)
}
}
/** How often do we update our estimate which share of v2 and v3 directory
* requests is sent to us? We could as well trigger updates of shares from
* network status updates, but that means adding a lot of calls into code
* that is independent from geoip stats (and keeping them up-to-date). We
* are perfectly fine with an approximation of 15-minute granularity. */
#define REQUEST_SHARE_INTERVAL (15 * 60)
/** When did we last determine which share of v2 and v3 directory requests
* is sent to us? */
static time_t last_time_determined_shares = 0;
/** Sum of products of v2 shares times the number of seconds for which we
* consider these shares as valid. */
static double v2_share_times_seconds;
/** Sum of products of v3 shares times the number of seconds for which we
* consider these shares as valid. */
static double v3_share_times_seconds;
/** Number of seconds we are determining v2 and v3 shares. */
static int share_seconds;
/** Try to determine which fraction of v2 and v3 directory requests aimed at
* caches will be sent to us at time <b>now</b> and store that value in
* order to take a mean value later on. */
static void
geoip_determine_shares(time_t now)
{
double v2_share = 0.0, v3_share = 0.0;
if (router_get_my_share_of_directory_requests(&v2_share, &v3_share) < 0)
return;
if (last_time_determined_shares) {
v2_share_times_seconds += v2_share *
((double) (now - last_time_determined_shares));
v3_share_times_seconds += v3_share *
((double) (now - last_time_determined_shares));
share_seconds += (int)(now - last_time_determined_shares);
}
last_time_determined_shares = now;
}
/** Calculate which fraction of v2 and v3 directory requests aimed at caches
* have been sent to us since the last call of this function up to time
* <b>now</b>. Set *<b>v2_share_out</b> and *<b>v3_share_out</b> to the
* fractions of v2 and v3 protocol shares we expect to have seen. Reset
* counters afterwards. Return 0 on success, -1 on failure (e.g. when zero
* seconds have passed since the last call).*/
static int
geoip_get_mean_shares(time_t now, double *v2_share_out,
double *v3_share_out)
{
geoip_determine_shares(now);
if (!share_seconds)
return -1;
*v2_share_out = v2_share_times_seconds / ((double) share_seconds);
*v3_share_out = v3_share_times_seconds / ((double) share_seconds);
v2_share_times_seconds = v3_share_times_seconds = 0.0;
share_seconds = 0;
return 0;
}
/** Note that we've seen a client connect from the IP <b>addr</b>
* at time <b>now</b>. Ignored by all but bridges and directories if
* configured accordingly. */
@ -610,22 +548,14 @@ geoip_note_client_seen(geoip_client_action_t action,
else
ent->last_seen_in_minutes = 0;
if (action == GEOIP_CLIENT_NETWORKSTATUS ||
action == GEOIP_CLIENT_NETWORKSTATUS_V2) {
if (action == GEOIP_CLIENT_NETWORKSTATUS) {
int country_idx = geoip_get_country_by_addr(addr);
if (country_idx < 0)
country_idx = 0; /** unresolved requests are stored at index 0. */
if (country_idx >= 0 && country_idx < smartlist_len(geoip_countries)) {
geoip_country_t *country = smartlist_get(geoip_countries, country_idx);
if (action == GEOIP_CLIENT_NETWORKSTATUS)
++country->n_v3_ns_requests;
else
++country->n_v2_ns_requests;
++country->n_v3_ns_requests;
}
/* Periodically determine share of requests that we should see */
if (last_time_determined_shares + REQUEST_SHARE_INTERVAL < now)
geoip_determine_shares(now);
}
}
@ -652,36 +582,24 @@ geoip_remove_old_clients(time_t cutoff)
&cutoff);
}
/** How many responses are we giving to clients requesting v2 network
* statuses? */
static uint32_t ns_v2_responses[GEOIP_NS_RESPONSE_NUM];
/** How many responses are we giving to clients requesting v3 network
* statuses? */
static uint32_t ns_v3_responses[GEOIP_NS_RESPONSE_NUM];
/** Note that we've rejected a client's request for a v2 or v3 network
* status, encoded in <b>action</b> for reason <b>reason</b> at time
* <b>now</b>. */
/** Note that we've rejected a client's request for a v3 network status
* for reason <b>reason</b> at time <b>now</b>. */
void
geoip_note_ns_response(geoip_client_action_t action,
geoip_ns_response_t response)
geoip_note_ns_response(geoip_ns_response_t response)
{
static int arrays_initialized = 0;
if (!get_options()->DirReqStatistics)
return;
if (!arrays_initialized) {
memset(ns_v2_responses, 0, sizeof(ns_v2_responses));
memset(ns_v3_responses, 0, sizeof(ns_v3_responses));
arrays_initialized = 1;
}
tor_assert(action == GEOIP_CLIENT_NETWORKSTATUS ||
action == GEOIP_CLIENT_NETWORKSTATUS_V2);
tor_assert(response < GEOIP_NS_RESPONSE_NUM);
if (action == GEOIP_CLIENT_NETWORKSTATUS)
ns_v3_responses[response]++;
else
ns_v2_responses[response]++;
ns_v3_responses[response]++;
}
/** Do not mention any country from which fewer than this number of IPs have
@ -736,7 +654,6 @@ typedef struct dirreq_map_entry_t {
unsigned int state:3; /**< State of this directory request. */
unsigned int type:1; /**< Is this a direct or a tunneled request? */
unsigned int completed:1; /**< Is this request complete? */
unsigned int action:2; /**< Is this a v2 or v3 request? */
/** When did we receive the request and started sending the response? */
struct timeval request_time;
size_t response_size; /**< What is the size of the response in bytes? */
@ -805,12 +722,11 @@ dirreq_map_get_(dirreq_type_t type, uint64_t dirreq_id)
}
/** Note that an either direct or tunneled (see <b>type</b>) directory
* request for a network status with unique ID <b>dirreq_id</b> of size
* <b>response_size</b> and action <b>action</b> (either v2 or v3) has
* started. */
* request for a v3 network status with unique ID <b>dirreq_id</b> of size
* <b>response_size</b> has started. */
void
geoip_start_dirreq(uint64_t dirreq_id, size_t response_size,
geoip_client_action_t action, dirreq_type_t type)
dirreq_type_t type)
{
dirreq_map_entry_t *ent;
if (!get_options()->DirReqStatistics)
@ -819,7 +735,6 @@ geoip_start_dirreq(uint64_t dirreq_id, size_t response_size,
ent->dirreq_id = dirreq_id;
tor_gettimeofday(&ent->request_time);
ent->response_size = response_size;
ent->action = action;
ent->type = type;
dirreq_map_put_(ent, type, dirreq_id);
}
@ -860,8 +775,7 @@ geoip_change_dirreq_state(uint64_t dirreq_id, dirreq_type_t type,
* times by deciles and quartiles. Return NULL if we have not observed
* requests for long enough. */
static char *
geoip_get_dirreq_history(geoip_client_action_t action,
dirreq_type_t type)
geoip_get_dirreq_history(dirreq_type_t type)
{
char *result = NULL;
smartlist_t *dirreq_completed = NULL;
@ -871,13 +785,10 @@ geoip_get_dirreq_history(geoip_client_action_t action,
struct timeval now;
tor_gettimeofday(&now);
if (action != GEOIP_CLIENT_NETWORKSTATUS &&
action != GEOIP_CLIENT_NETWORKSTATUS_V2)
return NULL;
dirreq_completed = smartlist_new();
for (ptr = HT_START(dirreqmap, &dirreq_map); ptr; ptr = next) {
ent = *ptr;
if (ent->action != action || ent->type != type) {
if (ent->type != type) {
next = HT_NEXT(dirreqmap, &dirreq_map, ptr);
continue;
} else {
@ -1063,18 +974,15 @@ geoip_get_client_history(geoip_client_action_t action,
}
/** Return a newly allocated string holding the per-country request history
* for <b>action</b> in a format suitable for an extra-info document, or NULL
* on failure. */
* for v3 network statuses in a format suitable for an extra-info document,
* or NULL on failure. */
char *
geoip_get_request_history(geoip_client_action_t action)
geoip_get_request_history(void)
{
smartlist_t *entries, *strings;
char *result;
unsigned granularity = IP_GRANULARITY;
if (action != GEOIP_CLIENT_NETWORKSTATUS &&
action != GEOIP_CLIENT_NETWORKSTATUS_V2)
return NULL;
if (!geoip_countries)
return NULL;
@ -1082,8 +990,7 @@ geoip_get_request_history(geoip_client_action_t action)
SMARTLIST_FOREACH_BEGIN(geoip_countries, geoip_country_t *, c) {
uint32_t tot = 0;
c_hist_t *ent;
tot = (action == GEOIP_CLIENT_NETWORKSTATUS) ?
c->n_v3_ns_requests : c->n_v2_ns_requests;
tot = c->n_v3_ns_requests;
if (!tot)
continue;
ent = tor_malloc_zero(sizeof(c_hist_t));
@ -1121,14 +1028,13 @@ void
geoip_reset_dirreq_stats(time_t now)
{
SMARTLIST_FOREACH(geoip_countries, geoip_country_t *, c, {
c->n_v2_ns_requests = c->n_v3_ns_requests = 0;
c->n_v3_ns_requests = 0;
});
{
clientmap_entry_t **ent, **next, *this;
for (ent = HT_START(clientmap, &client_history); ent != NULL;
ent = next) {
if ((*ent)->action == GEOIP_CLIENT_NETWORKSTATUS ||
(*ent)->action == GEOIP_CLIENT_NETWORKSTATUS_V2) {
if ((*ent)->action == GEOIP_CLIENT_NETWORKSTATUS) {
this = *ent;
next = HT_NEXT_RMV(clientmap, &client_history, ent);
tor_free(this);
@ -1137,10 +1043,6 @@ geoip_reset_dirreq_stats(time_t now)
}
}
}
v2_share_times_seconds = v3_share_times_seconds = 0.0;
last_time_determined_shares = 0;
share_seconds = 0;
memset(ns_v2_responses, 0, sizeof(ns_v2_responses));
memset(ns_v3_responses, 0, sizeof(ns_v3_responses));
{
dirreq_map_entry_t **ent, **next, *this;
@ -1168,12 +1070,9 @@ char *
geoip_format_dirreq_stats(time_t now)
{
char t[ISO_TIME_LEN+1];
double v2_share = 0.0, v3_share = 0.0;
int i;
char *v3_ips_string, *v2_ips_string, *v3_reqs_string, *v2_reqs_string,
*v2_share_string = NULL, *v3_share_string = NULL,
*v3_direct_dl_string, *v2_direct_dl_string,
*v3_tunneled_dl_string, *v2_tunneled_dl_string;
char *v3_ips_string, *v3_reqs_string, *v3_direct_dl_string,
*v3_tunneled_dl_string;
char *result;
if (!start_of_dirreq_stats_interval)
@ -1182,90 +1081,45 @@ geoip_format_dirreq_stats(time_t now)
tor_assert(now >= start_of_dirreq_stats_interval);
format_iso_time(t, now);
geoip_get_client_history(GEOIP_CLIENT_NETWORKSTATUS_V2, &v2_ips_string,
NULL);
geoip_get_client_history(GEOIP_CLIENT_NETWORKSTATUS, &v3_ips_string, NULL);
v2_reqs_string = geoip_get_request_history(
GEOIP_CLIENT_NETWORKSTATUS_V2);
v3_reqs_string = geoip_get_request_history(GEOIP_CLIENT_NETWORKSTATUS);
v3_reqs_string = geoip_get_request_history();
#define RESPONSE_GRANULARITY 8
for (i = 0; i < GEOIP_NS_RESPONSE_NUM; i++) {
ns_v2_responses[i] = round_uint32_to_next_multiple_of(
ns_v2_responses[i], RESPONSE_GRANULARITY);
ns_v3_responses[i] = round_uint32_to_next_multiple_of(
ns_v3_responses[i], RESPONSE_GRANULARITY);
}
#undef RESPONSE_GRANULARITY
if (!geoip_get_mean_shares(now, &v2_share, &v3_share)) {
tor_asprintf(&v2_share_string, "dirreq-v2-share %0.2f%%\n",
v2_share*100);
tor_asprintf(&v3_share_string, "dirreq-v3-share %0.2f%%\n",
v3_share*100);
}
v2_direct_dl_string = geoip_get_dirreq_history(
GEOIP_CLIENT_NETWORKSTATUS_V2, DIRREQ_DIRECT);
v3_direct_dl_string = geoip_get_dirreq_history(
GEOIP_CLIENT_NETWORKSTATUS, DIRREQ_DIRECT);
v2_tunneled_dl_string = geoip_get_dirreq_history(
GEOIP_CLIENT_NETWORKSTATUS_V2, DIRREQ_TUNNELED);
v3_tunneled_dl_string = geoip_get_dirreq_history(
GEOIP_CLIENT_NETWORKSTATUS, DIRREQ_TUNNELED);
v3_direct_dl_string = geoip_get_dirreq_history(DIRREQ_DIRECT);
v3_tunneled_dl_string = geoip_get_dirreq_history(DIRREQ_TUNNELED);
/* Put everything together into a single string. */
tor_asprintf(&result, "dirreq-stats-end %s (%d s)\n"
"dirreq-v3-ips %s\n"
"dirreq-v2-ips %s\n"
"dirreq-v3-reqs %s\n"
"dirreq-v2-reqs %s\n"
"dirreq-v3-resp ok=%u,not-enough-sigs=%u,unavailable=%u,"
"not-found=%u,not-modified=%u,busy=%u\n"
"dirreq-v2-resp ok=%u,unavailable=%u,"
"not-found=%u,not-modified=%u,busy=%u\n"
"%s"
"%s"
"dirreq-v3-direct-dl %s\n"
"dirreq-v2-direct-dl %s\n"
"dirreq-v3-tunneled-dl %s\n"
"dirreq-v2-tunneled-dl %s\n",
"dirreq-v3-tunneled-dl %s\n",
t,
(unsigned) (now - start_of_dirreq_stats_interval),
v3_ips_string ? v3_ips_string : "",
v2_ips_string ? v2_ips_string : "",
v3_reqs_string ? v3_reqs_string : "",
v2_reqs_string ? v2_reqs_string : "",
ns_v3_responses[GEOIP_SUCCESS],
ns_v3_responses[GEOIP_REJECT_NOT_ENOUGH_SIGS],
ns_v3_responses[GEOIP_REJECT_UNAVAILABLE],
ns_v3_responses[GEOIP_REJECT_NOT_FOUND],
ns_v3_responses[GEOIP_REJECT_NOT_MODIFIED],
ns_v3_responses[GEOIP_REJECT_BUSY],
ns_v2_responses[GEOIP_SUCCESS],
ns_v2_responses[GEOIP_REJECT_UNAVAILABLE],
ns_v2_responses[GEOIP_REJECT_NOT_FOUND],
ns_v2_responses[GEOIP_REJECT_NOT_MODIFIED],
ns_v2_responses[GEOIP_REJECT_BUSY],
v2_share_string ? v2_share_string : "",
v3_share_string ? v3_share_string : "",
v3_direct_dl_string ? v3_direct_dl_string : "",
v2_direct_dl_string ? v2_direct_dl_string : "",
v3_tunneled_dl_string ? v3_tunneled_dl_string : "",
v2_tunneled_dl_string ? v2_tunneled_dl_string : "");
v3_tunneled_dl_string ? v3_tunneled_dl_string : "");
/* Free partial strings. */
tor_free(v3_ips_string);
tor_free(v2_ips_string);
tor_free(v3_reqs_string);
tor_free(v2_reqs_string);
tor_free(v2_share_string);
tor_free(v3_share_string);
tor_free(v3_direct_dl_string);
tor_free(v2_direct_dl_string);
tor_free(v3_tunneled_dl_string);
tor_free(v2_tunneled_dl_string);
return result;
}

7
src/or/geoip.h
View File

@ -30,18 +30,17 @@ void geoip_note_client_seen(geoip_client_action_t action,
const tor_addr_t *addr, time_t now);
void geoip_remove_old_clients(time_t cutoff);
void geoip_note_ns_response(geoip_client_action_t action,
geoip_ns_response_t response);
void geoip_note_ns_response(geoip_ns_response_t response);
int geoip_get_client_history(geoip_client_action_t action,
char **country_str, char **ipver_str);
char *geoip_get_request_history(geoip_client_action_t action);
char *geoip_get_request_history(void);
int getinfo_helper_geoip(control_connection_t *control_conn,
const char *question, char **answer,
const char **errmsg);
void geoip_free_all(void);
void geoip_start_dirreq(uint64_t dirreq_id, size_t response_size,
geoip_client_action_t action, dirreq_type_t type);
dirreq_type_t type);
void geoip_change_dirreq_state(uint64_t dirreq_id, dirreq_type_t type,
dirreq_state_t new_state);

5
src/test/test.c
View File

@ -1754,14 +1754,13 @@ test_geoip(void)
/* Note a successful network status response and make sure that it
* appears in the history string. */
geoip_note_ns_response(GEOIP_CLIENT_NETWORKSTATUS, GEOIP_SUCCESS);
geoip_note_ns_response(GEOIP_SUCCESS);
s = geoip_format_dirreq_stats(now + 86400);
test_streq(dirreq_stats_3, s);
tor_free(s);
/* Start a tunneled directory request. */
geoip_start_dirreq((uint64_t) 1, 1024, GEOIP_CLIENT_NETWORKSTATUS,
DIRREQ_TUNNELED);
geoip_start_dirreq((uint64_t) 1, 1024, DIRREQ_TUNNELED);
s = geoip_format_dirreq_stats(now + 86400);
test_streq(dirreq_stats_4, s);