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r12580@catbus: nickm | 2007-04-30 13:29:05 -0400
Initial version of patch from Karsten Loesing: Add an HSAuthorityRecordStats option to track statistics of overall hidden service usage without logging information that would be useful to an attacker. svn:r10067
This commit is contained in:
parent
6875559c49
commit
18ba9fe81f
@ -13,6 +13,9 @@ Changes in version 0.2.0.1-alpha - 2007-??-??
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- Make PreferTunneledDirConns and TunnelDirConns work even when
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we have no cached directory info. This means Tor clients can now
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do all of their connections protected by TLS.
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- Add an HSAuthorityRecordStats option that hidden service authorities
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can use to track statistics of overall hidden service usage without
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logging information that would be very useful to an attacker.
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o Security fixes:
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- Directory authorities now call routers stable if they have an
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@ -174,6 +174,7 @@ static config_var_t _option_vars[] = {
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VAR("HiddenServiceOptions",LINELIST_V, RendConfigLines, NULL),
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VAR("HiddenServicePort", LINELIST_S, RendConfigLines, NULL),
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VAR("HSAuthoritativeDir", BOOL, HSAuthoritativeDir, "0"),
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VAR("HSAuthorityRecordStats",BOOL, HSAuthorityRecordStats,"0"),
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VAR("HttpProxy", STRING, HttpProxy, NULL),
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VAR("HttpProxyAuthenticator",STRING, HttpProxyAuthenticator,NULL),
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VAR("HttpsProxy", STRING, HttpsProxy, NULL),
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@ -2497,6 +2498,10 @@ options_validate(or_options_t *old_options, or_options_t *options,
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if (options->AuthoritativeDir && options->ClientOnly)
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REJECT("Running as authoritative directory, but ClientOnly also set.");
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if (options->HSAuthorityRecordStats && !options->HSAuthoritativeDir)
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REJECT("HSAuthorityRecordStats is set but we're not running as "
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"a hidden service authority.");
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if (options->ConnLimit <= 0) {
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r = tor_snprintf(buf, sizeof(buf),
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"ConnLimit must be greater than 0, but was set to %d",
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@ -1244,7 +1244,7 @@ connection_dir_client_reached_eof(dir_connection_t *conn)
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(int)body_len, status_code, escaped(reason));
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switch (status_code) {
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case 200:
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if (rend_cache_store(body, body_len) < 0) {
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if (rend_cache_store(body, body_len, 0) < 0) {
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log_warn(LD_REND,"Failed to store rendezvous descriptor.");
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/* alice's ap_stream will notice when connection_mark_for_close
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* cleans it up */
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@ -1771,9 +1771,18 @@ directory_handle_command_get(dir_connection_t *conn, const char *headers,
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note_request("/tor/rendezvous?/", desc_len);
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/* need to send descp separately, because it may include nuls */
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connection_write_to_buf(descp, desc_len, TO_CONN(conn));
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/* report successful fetch to statistic */
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if (options->HSAuthorityRecordStats) {
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hs_usage_note_fetch_total(query, time(NULL));
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hs_usage_note_fetch_successful(query, time(NULL));
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}
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break;
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case 0: /* well-formed but not present */
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write_http_status_line(conn, 404, "Not found");
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/* report (unsuccessful) fetch to statistic */
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if (options->HSAuthorityRecordStats) {
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hs_usage_note_fetch_total(query, time(NULL));
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}
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break;
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case -1: /* not well-formed */
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write_http_status_line(conn, 400, "Bad request");
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@ -1890,7 +1899,7 @@ directory_handle_command_post(dir_connection_t *conn, const char *headers,
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if (options->HSAuthoritativeDir &&
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!strcmpstart(url,"/tor/rendezvous/publish")) {
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/* rendezvous descriptor post */
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if (rend_cache_store(body, body_len) < 0) {
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if (rend_cache_store(body, body_len, 1) < 0) {
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// char tmp[1024*2+1];
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log_fn(LOG_PROTOCOL_WARN, LD_DIRSERV,
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"Rejected rend descriptor (length %d) from %s.",
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@ -141,6 +141,8 @@ static char* nt_strerror(uint32_t errnum);
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/** How long do we let OR connections handshake before we decide that
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* they are obsolete? */
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#define TLS_HANDSHAKE_TIMEOUT (60)
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/** How often do we write hidden service usage statistics to disk* */
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#define WRITE_HSUSAGE_INTERVAL (900)
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/********* END VARIABLES ************/
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@ -818,6 +820,7 @@ run_scheduled_events(time_t now)
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static time_t time_to_try_getting_descriptors = 0;
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static time_t time_to_reset_descriptor_failures = 0;
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static time_t time_to_add_entropy = 0;
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static time_t time_to_write_hs_statistics = 0;
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or_options_t *options = get_options();
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int i;
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int have_dir_info;
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@ -1048,6 +1051,12 @@ run_scheduled_events(time_t now)
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crypto_rand_int(12*3600);
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}
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}
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/** 10. write hidden service usage statistic to disk */
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if (options->HSAuthorityRecordStats && time_to_write_hs_statistics < now) {
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hs_usage_write_statistics_to_file(now);
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time_to_write_hs_statistics = now+WRITE_HSUSAGE_INTERVAL;
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}
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}
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/** Libevent timer: used to invoke second_elapsed_callback() once per
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@ -1730,6 +1739,7 @@ tor_free_all(int postfork)
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rend_service_free_all();
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rend_cache_free_all();
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rep_hist_free_all();
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hs_usage_free_all();
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dns_free_all();
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clear_pending_onions();
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circuit_free_all();
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13
src/or/or.h
13
src/or/or.h
@ -1709,6 +1709,8 @@ typedef struct {
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* for version 1 directories? */
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int HSAuthoritativeDir; /**< Boolean: does this an authoritative directory
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* handle hidden service requests? */
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int HSAuthorityRecordStats; /**< Boolean: does this HS authoritative
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* directory record statistics? */
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int NamingAuthoritativeDir; /**< Boolean: is this an authoritative directory
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* that's willing to bind names? */
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int VersioningAuthoritativeDir; /**< Boolean: is this an authoritative
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@ -2789,6 +2791,14 @@ void dump_pk_ops(int severity);
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void rep_hist_free_all(void);
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/* for hidden service usage statistic */
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void hs_usage_note_publish_total(const char *service_id, time_t now);
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void hs_usage_note_publish_novel(const char *service_id, time_t now);
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void hs_usage_note_fetch_total(const char *service_id, time_t now);
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void hs_usage_note_fetch_successful(const char *service_id, time_t now);
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void hs_usage_write_statistics_to_file(time_t now);
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void hs_usage_free_all(void);
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/********************************* rendclient.c ***************************/
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void rend_client_introcirc_has_opened(origin_circuit_t *circ);
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@ -2861,7 +2871,8 @@ int rend_cache_lookup_desc(const char *query, int version, const char **desc,
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size_t *desc_len);
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int rend_cache_lookup_entry(const char *query, int version,
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rend_cache_entry_t **entry_out);
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int rend_cache_store(const char *desc, size_t desc_len);
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int rend_cache_store(const char *desc, size_t desc_len, int published);
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int rend_cache_size(void);
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/********************************* rendservice.c ***************************/
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@ -360,17 +360,18 @@ rend_cache_lookup_desc(const char *query, int version, const char **desc,
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* If we have an older descriptor with the same ID, replace it.
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* Return -1 if it's malformed or otherwise rejected; return 0 if
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* it's the same or older than one we've already got; return 1 if
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* it's novel.
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* it's novel. The published flag tells us if we store the descriptor
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* in our role aus directory (1) or if we cache it as client (0).
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*/
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int
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rend_cache_store(const char *desc, size_t desc_len)
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rend_cache_store(const char *desc, size_t desc_len, int published)
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{
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rend_cache_entry_t *e;
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rend_service_descriptor_t *parsed;
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char query[REND_SERVICE_ID_LEN+1];
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char key[REND_SERVICE_ID_LEN+2]; /* 1<query>\0 or 0<query>\0 */
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time_t now;
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or_options_t *options = get_options();
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tor_assert(rend_cache);
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parsed = rend_parse_service_descriptor(desc,desc_len);
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if (!parsed) {
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@ -396,6 +397,10 @@ rend_cache_store(const char *desc, size_t desc_len)
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rend_service_descriptor_free(parsed);
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return -1;
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}
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/* report novel publication to statistic */
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if (published && options->HSAuthorityRecordStats) {
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hs_usage_note_publish_total(query, time(NULL));
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}
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e = (rend_cache_entry_t*) strmap_get_lc(rend_cache, key);
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if (e && e->parsed->timestamp > parsed->timestamp) {
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log_info(LD_REND,"We already have a newer service descriptor %s with the "
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@ -413,6 +418,10 @@ rend_cache_store(const char *desc, size_t desc_len)
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if (!e) {
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e = tor_malloc_zero(sizeof(rend_cache_entry_t));
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strmap_set_lc(rend_cache, key, e);
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/* report novel publication to statistic */
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if (published && options->HSAuthorityRecordStats) {
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hs_usage_note_publish_novel(query, time(NULL));
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}
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} else {
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rend_service_descriptor_free(e->parsed);
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tor_free(e->desc);
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@ -477,3 +486,9 @@ rend_process_relay_cell(circuit_t *circ, int command, size_t length,
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(void)r;
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}
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int
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rend_cache_size(void)
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{
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return strmap_size(rend_cache);
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}
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528
src/or/rephist.c
528
src/or/rephist.c
@ -15,6 +15,7 @@ const char rephist_c_id[] =
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static void bw_arrays_init(void);
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static void predicted_ports_init(void);
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static void hs_usage_init(void);
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uint64_t rephist_total_alloc=0;
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uint32_t rephist_total_num=0;
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@ -147,6 +148,7 @@ rep_hist_init(void)
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history_map = digestmap_new();
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bw_arrays_init();
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predicted_ports_init();
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hs_usage_init();
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}
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/** Remember that an attempt to connect to the OR with identity digest
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@ -382,7 +384,7 @@ rep_history_clean(time_t before)
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/** For how many seconds do we keep track of individual per-second bandwidth
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* totals? */
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#define NUM_SECS_ROLLING_MEASURE 10
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/** How large are the intervals for with we track and report bandwidth use? */
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/** How large are the intervals for which we track and report bandwidth use? */
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#define NUM_SECS_BW_SUM_INTERVAL (15*60)
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/** How far in the past do we remember and publish bandwidth use? */
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#define NUM_SECS_BW_SUM_IS_VALID (24*60*60)
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@ -1041,3 +1043,527 @@ rep_hist_free_all(void)
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predicted_ports_free();
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}
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/****************** hidden service usage statistics ******************/
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/** How large are the intervals for which we track and report hidden service
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* use? */
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#define NUM_SECS_HS_USAGE_SUM_INTERVAL (15*60)
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/** How far in the past do we remember and publish hidden service use? */
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#define NUM_SECS_HS_USAGE_SUM_IS_VALID (24*60*60)
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/** How many hidden service usage intervals do we remember? (derived) */
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#define NUM_TOTALS_HS_USAGE (NUM_SECS_HS_USAGE_SUM_IS_VALID/ \
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NUM_SECS_HS_USAGE_SUM_INTERVAL)
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/** List element containing a service id and the count. */
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typedef struct hs_usage_list_elem_t {
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/** Service id of this elem. */
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char service_id[REND_SERVICE_ID_LEN+1];
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/** Number of occurrences for the given service id. */
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uint32_t count;
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/* Pointer to next list elem */
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struct hs_usage_list_elem_t *next;
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} hs_usage_list_elem_t;
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/* Ordered list that stores service ids and the number of observations. It is
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* ordered by the number of occurrences in descending order. Its purpose is to
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* calculate the frequency distribution when the period is over. */
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typedef struct hs_usage_list_t {
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/* Pointer to the first element in the list. */
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hs_usage_list_elem_t *start;
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/* Number of total occurrences for all list elements. */
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uint32_t total_count;
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/* Number of service ids, i.e. number of list elements. */
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uint32_t total_service_ids;
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} hs_usage_list_t;
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/** Tracks service-related observations in the current period and their
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* history. */
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typedef struct hs_usage_service_related_observation_t {
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/** Ordered list that stores service ids and the number of observations in
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* the current period. It is ordered by the number of occurrences in
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* descending order. Its purpose is to calculate the frequency distribution
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* when the period is over. */
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hs_usage_list_t *list;
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/** Circular arrays that store the history of observations. totals stores all
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* observations, twenty (ten, five) the number of observations related to a
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* service id being accounted for the top 20 (10, 5) percent of all
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* observations. */
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uint32_t totals[NUM_TOTALS_HS_USAGE];
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uint32_t five[NUM_TOTALS_HS_USAGE];
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uint32_t ten[NUM_TOTALS_HS_USAGE];
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uint32_t twenty[NUM_TOTALS_HS_USAGE];
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} hs_usage_service_related_observation_t;
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/** Tracks the history of general period-related observations, i.e. those that
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* cannot be related to a specific service id. */
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typedef struct hs_usage_general_period_related_observations_t {
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/** Circular array that stores the history of observations. */
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uint32_t totals[NUM_TOTALS_HS_USAGE];
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} hs_usage_general_period_related_observations_t;
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/** Keeps information about the current observation period and its relation to
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* the histories of observations. */
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typedef struct hs_usage_current_observation_period_t {
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/** Where do we write the next history entry? */
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int next_idx;
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/** How many values in history have been set ever? (upper bound!) */
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int num_set;
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/** When did this period begin? */
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time_t start_of_current_period;
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/** When does the next period begin? */
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time_t start_of_next_period;
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} hs_usage_current_observation_period_t;
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static hs_usage_current_observation_period_t *current_period = NULL;
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static hs_usage_service_related_observation_t *publish_total = NULL;
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static hs_usage_service_related_observation_t *publish_novel = NULL;
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static hs_usage_service_related_observation_t *fetch_total = NULL;
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static hs_usage_service_related_observation_t *fetch_successful = NULL;
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static hs_usage_general_period_related_observations_t *descs = NULL;
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/** Creates an empty ordered list element. */
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static hs_usage_list_elem_t *
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hs_usage_list_elem_new(void)
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{
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hs_usage_list_elem_t *e;
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e = tor_malloc_zero(sizeof(hs_usage_list_elem_t));
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rephist_total_alloc += sizeof(hs_usage_list_elem_t);
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e->count = 1;
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e->next = NULL;
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return e;
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}
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/** Creates an empty ordered list. */
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static hs_usage_list_t *
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hs_usage_list_new(void)
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{
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hs_usage_list_t *l;
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l = tor_malloc_zero(sizeof(hs_usage_list_t));
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rephist_total_alloc += sizeof(hs_usage_list_t);
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l->start = NULL;
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l->total_count = 0;
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l->total_service_ids = 0;
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return l;
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}
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/** Creates an empty structure for storing service-related observations. */
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static hs_usage_service_related_observation_t *
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hs_usage_service_related_observation_new(void)
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{
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hs_usage_service_related_observation_t *h;
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h = tor_malloc_zero(sizeof(hs_usage_service_related_observation_t));
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rephist_total_alloc += sizeof(hs_usage_service_related_observation_t);
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h->list = hs_usage_list_new();
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return h;
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}
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/** Creates an empty structure for storing general period-related
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* observations. */
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static hs_usage_general_period_related_observations_t *
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hs_usage_general_period_related_observations_new(void)
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{
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hs_usage_general_period_related_observations_t *p;
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p = tor_malloc_zero(sizeof(hs_usage_general_period_related_observations_t));
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rephist_total_alloc+= sizeof(hs_usage_general_period_related_observations_t);
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return p;
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}
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/** Creates an empty structure for storing period-specific information. */
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static hs_usage_current_observation_period_t *
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hs_usage_current_observation_period_new(void)
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{
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hs_usage_current_observation_period_t *c;
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time_t now;
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c = tor_malloc_zero(sizeof(hs_usage_current_observation_period_t));
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rephist_total_alloc += sizeof(hs_usage_current_observation_period_t);
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now = time(NULL);
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c->start_of_current_period = now;
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c->start_of_next_period = now + NUM_SECS_HS_USAGE_SUM_INTERVAL;
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return c;
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}
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/** Initializes the structures for collecting hidden service usage data. */
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static void
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hs_usage_init(void)
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{
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current_period = hs_usage_current_observation_period_new();
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publish_total = hs_usage_service_related_observation_new();
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publish_novel = hs_usage_service_related_observation_new();
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fetch_total = hs_usage_service_related_observation_new();
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fetch_successful = hs_usage_service_related_observation_new();
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descs = hs_usage_general_period_related_observations_new();
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}
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/** Clears the given ordered list by resetting its attributes and releasing
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* the memory allocated by its elements. */
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static void
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hs_usage_list_clear(hs_usage_list_t *l)
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{
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/* walk through elements and free memory */
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hs_usage_list_elem_t *current = l->start;
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hs_usage_list_elem_t *tmp;
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while (current != NULL) {
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tmp = current->next;
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rephist_total_alloc -= sizeof(hs_usage_list_elem_t);
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tor_free(current);
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current = tmp;
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}
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/* reset attributes */
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l->start = NULL;
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l->total_count = 0;
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l->total_service_ids = 0;
|
||||
return;
|
||||
}
|
||||
|
||||
/** Frees the memory used by the given list. */
|
||||
static void
|
||||
hs_usage_list_free(hs_usage_list_t *l)
|
||||
{
|
||||
hs_usage_list_clear(l);
|
||||
rephist_total_alloc -= sizeof(hs_usage_list_t);
|
||||
tor_free(l);
|
||||
}
|
||||
|
||||
/** Frees the memory used by the given service-related observations. */
|
||||
static void
|
||||
hs_usage_service_related_observation_free(
|
||||
hs_usage_service_related_observation_t *s)
|
||||
{
|
||||
hs_usage_list_free(s->list);
|
||||
rephist_total_alloc -= sizeof(hs_usage_service_related_observation_t);
|
||||
tor_free(s);
|
||||
}
|
||||
|
||||
/** Frees the memory used by the given period-specific observations. */
|
||||
static void
|
||||
hs_usage_general_period_related_observations_free(
|
||||
hs_usage_general_period_related_observations_t *s)
|
||||
{
|
||||
rephist_total_alloc-=sizeof(hs_usage_general_period_related_observations_t);
|
||||
tor_free(s);
|
||||
}
|
||||
|
||||
/** Frees the memory used by period-specific information. */
|
||||
static void
|
||||
hs_usage_current_observation_period_free(
|
||||
hs_usage_current_observation_period_t *s)
|
||||
{
|
||||
rephist_total_alloc -= sizeof(hs_usage_current_observation_period_t);
|
||||
tor_free(s);
|
||||
}
|
||||
|
||||
/** Frees all memory that was used for collecting hidden service usage data. */
|
||||
void
|
||||
hs_usage_free_all(void)
|
||||
{
|
||||
hs_usage_general_period_related_observations_free(descs);
|
||||
hs_usage_service_related_observation_free(fetch_successful);
|
||||
hs_usage_service_related_observation_free(fetch_total);
|
||||
hs_usage_service_related_observation_free(publish_novel);
|
||||
hs_usage_service_related_observation_free(publish_total);
|
||||
hs_usage_current_observation_period_free(current_period);
|
||||
}
|
||||
|
||||
/** Inserts a new occurence for the given service id to the given ordered
|
||||
* list. */
|
||||
static void
|
||||
hs_usage_insert_value(hs_usage_list_t *l, const char *service_id)
|
||||
{
|
||||
/* search if there is already an elem with same service_id in list */
|
||||
hs_usage_list_elem_t *current = l->start;
|
||||
hs_usage_list_elem_t *previous = NULL;
|
||||
while (current != NULL && strcmp(current->service_id,service_id)) {
|
||||
previous = current;
|
||||
current = current->next;
|
||||
}
|
||||
/* found an element with same service_id? */
|
||||
if (current == NULL) {
|
||||
/* not found! append to end (which could also be the end of a zero-length
|
||||
* list), don't need to sort (1 is smallest value). */
|
||||
/* create elem */
|
||||
hs_usage_list_elem_t *e = hs_usage_list_elem_new();
|
||||
/* update list attributes (one new elem, one new occurence) */
|
||||
l->total_count++;
|
||||
l->total_service_ids++;
|
||||
/* copy service id to elem */
|
||||
strlcpy(e->service_id,service_id,sizeof(e->service_id));
|
||||
/* let either l->start or previously last elem point to new elem */
|
||||
if (l->start == NULL) {
|
||||
/* this is the first elem */
|
||||
l->start = e;
|
||||
} else {
|
||||
/* there were elems in the list before */
|
||||
previous->next = e;
|
||||
}
|
||||
} else {
|
||||
/* found! add occurence to elem and consider resorting */
|
||||
/* update list attributes (no new elem, but one new occurence) */
|
||||
l->total_count++;
|
||||
/* add occurence to elem */
|
||||
current->count++;
|
||||
/* is it another than the first list elem? and has previous elem fewer
|
||||
* count than current? then we need to resort */
|
||||
if (previous != NULL && previous->count < current->count) {
|
||||
/* yes! we need to resort */
|
||||
/* remove current elem first */
|
||||
previous->next = current->next;
|
||||
/* can we prepend elem to all other elements? */
|
||||
if (l->start->count <= current->count) {
|
||||
/* yes! prepend elem */
|
||||
current->next = l->start;
|
||||
l->start = current;
|
||||
} else {
|
||||
/* no! walk through list a second time and insert at correct place */
|
||||
hs_usage_list_elem_t *insert_current = l->start->next;
|
||||
hs_usage_list_elem_t *insert_previous = l->start;
|
||||
while (insert_current != NULL &&
|
||||
insert_current->count > current->count) {
|
||||
insert_previous = insert_current;
|
||||
insert_current = insert_current->next;
|
||||
}
|
||||
/* insert here */
|
||||
current->next = insert_current;
|
||||
insert_previous->next = current;
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
/** Writes the current service-related observations to the history array and
|
||||
* clears the observations of the current period. */
|
||||
static void
|
||||
hs_usage_write_service_related_observations_to_history(
|
||||
hs_usage_current_observation_period_t *p,
|
||||
hs_usage_service_related_observation_t *h)
|
||||
{
|
||||
/* walk through the first 20 % of list elements and calculate frequency
|
||||
* distributions */
|
||||
/* maximum indices for the three frequencies */
|
||||
int five_percent_idx = h->list->total_service_ids/20;
|
||||
int ten_percent_idx = h->list->total_service_ids/10;
|
||||
int twenty_percent_idx = h->list->total_service_ids/5;
|
||||
/* temp values */
|
||||
uint32_t five_percent = 0;
|
||||
uint32_t ten_percent = 0;
|
||||
uint32_t twenty_percent = 0;
|
||||
/* walk through list */
|
||||
hs_usage_list_elem_t *current = h->list->start;
|
||||
int i=0;
|
||||
while (current != NULL && i <= twenty_percent_idx) {
|
||||
twenty_percent += current->count;
|
||||
if (i <= ten_percent_idx)
|
||||
ten_percent += current->count;
|
||||
if (i <= five_percent_idx)
|
||||
five_percent += current->count;
|
||||
current = current->next;
|
||||
i++;
|
||||
}
|
||||
/* copy frequencies */
|
||||
h->twenty[p->next_idx] = twenty_percent;
|
||||
h->ten[p->next_idx] = ten_percent;
|
||||
h->five[p->next_idx] = five_percent;
|
||||
/* copy total number of observations */
|
||||
h->totals[p->next_idx] = h->list->total_count;
|
||||
/* free memory of old list */
|
||||
hs_usage_list_clear(h->list);
|
||||
}
|
||||
|
||||
/** Advances to next observation period */
|
||||
static void
|
||||
hs_usage_advance_current_observation_period(void)
|
||||
{
|
||||
/* aggregate observations to history, including frequency distribution
|
||||
* arrays */
|
||||
hs_usage_write_service_related_observations_to_history(
|
||||
current_period, publish_total);
|
||||
hs_usage_write_service_related_observations_to_history(
|
||||
current_period, publish_novel);
|
||||
hs_usage_write_service_related_observations_to_history(
|
||||
current_period, fetch_total);
|
||||
hs_usage_write_service_related_observations_to_history(
|
||||
current_period, fetch_successful);
|
||||
/* write current number of descriptors to descs history */
|
||||
descs->totals[current_period->next_idx] = rend_cache_size();
|
||||
/* advance to next period */
|
||||
current_period->next_idx++;
|
||||
if (current_period->next_idx == NUM_TOTALS_HS_USAGE)
|
||||
current_period->next_idx = 0;
|
||||
if (current_period->num_set < NUM_TOTALS_HS_USAGE)
|
||||
++current_period->num_set;
|
||||
current_period->start_of_current_period=current_period->start_of_next_period;
|
||||
current_period->start_of_next_period += NUM_SECS_HS_USAGE_SUM_INTERVAL;
|
||||
}
|
||||
|
||||
/** Checks if the current period is up to date, and if not, advances it. */
|
||||
static void
|
||||
hs_usage_check_if_current_period_is_up_to_date(time_t now)
|
||||
{
|
||||
while (now > current_period->start_of_next_period) {
|
||||
hs_usage_advance_current_observation_period();
|
||||
}
|
||||
}
|
||||
|
||||
/** Adds a service-related observation, maybe after advancing to next
|
||||
* observation period. */
|
||||
static void
|
||||
hs_usage_add_service_related_observation(
|
||||
hs_usage_service_related_observation_t *h,
|
||||
time_t now,
|
||||
const char *service_id)
|
||||
{
|
||||
if (now < current_period->start_of_current_period) {
|
||||
/* don't record old data */
|
||||
return;
|
||||
}
|
||||
/* check if we are up-to-date */
|
||||
hs_usage_check_if_current_period_is_up_to_date(now);
|
||||
/* add observation */
|
||||
hs_usage_insert_value(h->list, service_id);
|
||||
}
|
||||
|
||||
/** Adds the observation of storing a rendezvous service descriptor to our
|
||||
* cache in our role as HS authoritative directory. */
|
||||
void
|
||||
hs_usage_note_publish_total(const char *service_id, time_t now)
|
||||
{
|
||||
hs_usage_add_service_related_observation(publish_total, now, service_id);
|
||||
}
|
||||
|
||||
/** Adds the observation of storing a novel rendezvous service descriptor to
|
||||
* our cache in our role as HS authoritative directory. */
|
||||
void
|
||||
hs_usage_note_publish_novel(const char *service_id, time_t now)
|
||||
{
|
||||
hs_usage_add_service_related_observation(publish_novel, now, service_id);
|
||||
}
|
||||
|
||||
/** Adds the observation of being requested for a rendezvous service descriptor
|
||||
* in our role as HS authoritative directory. */
|
||||
void
|
||||
hs_usage_note_fetch_total(const char *service_id, time_t now)
|
||||
{
|
||||
hs_usage_add_service_related_observation(fetch_total, now, service_id);
|
||||
}
|
||||
|
||||
/** Adds the observation of being requested for a rendezvous service descriptor
|
||||
* in our role as HS authoritative directory and being able to answer that
|
||||
* request successfully. */
|
||||
void
|
||||
hs_usage_note_fetch_successful(const char *service_id, time_t now)
|
||||
{
|
||||
hs_usage_add_service_related_observation(fetch_successful, now, service_id);
|
||||
}
|
||||
|
||||
/** Writes the given circular array to a string */
|
||||
static size_t
|
||||
hs_usage_format_history(char *buf, size_t len, uint32_t *data)
|
||||
{
|
||||
char *cp = buf; /* pointer where we are in the buffer */
|
||||
int i, n;
|
||||
if (current_period->num_set <= current_period->next_idx) {
|
||||
i = 0; /* not been through circular array */
|
||||
} else {
|
||||
i = current_period->next_idx;
|
||||
}
|
||||
for (n = 0; n < current_period->num_set; ++n,++i) {
|
||||
while (i >= NUM_TOTALS_HS_USAGE) i -= NUM_TOTALS_HS_USAGE;
|
||||
if (n == (current_period->num_set-1))
|
||||
tor_snprintf(cp, len-(cp-buf), "%d", data[i]);
|
||||
else
|
||||
tor_snprintf(cp, len-(cp-buf), "%d,", data[i]);
|
||||
cp += strlen(cp);
|
||||
}
|
||||
return cp-buf;
|
||||
}
|
||||
|
||||
/** Writes the complete usage history as hidden service authoritative directory
|
||||
* to a string */
|
||||
static char *
|
||||
hs_usage_format_statistics(void)
|
||||
{
|
||||
char *buf, *cp, *s = NULL;
|
||||
char t[ISO_TIME_LEN+1];
|
||||
int r;
|
||||
uint32_t *data = NULL;
|
||||
size_t len;
|
||||
len = (70+20*NUM_TOTALS_HS_USAGE)*11;
|
||||
buf = tor_malloc_zero(len);
|
||||
cp = buf;
|
||||
for (r = 0; r < 11; ++r) {
|
||||
switch (r) {
|
||||
case 0:
|
||||
s = (char*) "publish-total-history";
|
||||
data = publish_total->totals;
|
||||
break;
|
||||
case 1:
|
||||
s = (char*) "publish-novel-history";
|
||||
data = publish_novel->totals;
|
||||
break;
|
||||
case 2:
|
||||
s = (char*) "publish-top-5-percent-history";
|
||||
data = publish_total->five;
|
||||
break;
|
||||
case 3:
|
||||
s = (char*) "publish-top-10-percent-history";
|
||||
data = publish_total->ten;
|
||||
break;
|
||||
case 4:
|
||||
s = (char*) "publish-top-20-percent-history";
|
||||
data = publish_total->twenty;
|
||||
break;
|
||||
case 5:
|
||||
s = (char*) "fetch-total-history";
|
||||
data = fetch_total->totals;
|
||||
break;
|
||||
case 6:
|
||||
s = (char*) "fetch-successful-history";
|
||||
data = fetch_successful->totals;
|
||||
break;
|
||||
case 7:
|
||||
s = (char*) "fetch-top-5-percent-history";
|
||||
data = fetch_total->five;
|
||||
break;
|
||||
case 8:
|
||||
s = (char*) "fetch-top-10-percent-history";
|
||||
data = fetch_total->ten;
|
||||
break;
|
||||
case 9:
|
||||
s = (char*) "fetch-top-20-percent-history";
|
||||
data = fetch_total->twenty;
|
||||
break;
|
||||
case 10:
|
||||
s = (char*) "desc-total-history";
|
||||
data = descs->totals;
|
||||
break;
|
||||
}
|
||||
format_iso_time(t, current_period->start_of_current_period);
|
||||
tor_snprintf(cp, len-(cp-buf), "%s %s (%d s) ", s, t,
|
||||
NUM_SECS_HS_USAGE_SUM_INTERVAL);
|
||||
cp += strlen(cp);
|
||||
cp += hs_usage_format_history(cp, len-(cp-buf), data);
|
||||
strlcat(cp, "\n", len-(cp-buf));
|
||||
++cp;
|
||||
}
|
||||
return buf;
|
||||
}
|
||||
|
||||
/** Writes current statistics to file. */
|
||||
void
|
||||
hs_usage_write_statistics_to_file(time_t now)
|
||||
{
|
||||
char *buf;
|
||||
size_t len;
|
||||
char *fname;
|
||||
or_options_t *options;
|
||||
/* check if we are up-to-date */
|
||||
hs_usage_check_if_current_period_is_up_to_date(now);
|
||||
buf = hs_usage_format_statistics();
|
||||
options = get_options();
|
||||
len = strlen(options->DataDirectory) + 16;
|
||||
fname = tor_malloc(len);
|
||||
tor_snprintf(fname,len, "%s"PATH_SEPARATOR"hsusage", options->DataDirectory);
|
||||
write_str_to_file(fname,buf,0);
|
||||
tor_free(buf);
|
||||
tor_free(fname);
|
||||
}
|
||||
|
||||
|
Loading…
Reference in New Issue
Block a user