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Add GeoIP file digest to extra-info descriptor.
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changes/enhancement1883
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changes/enhancement1883
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@ -0,0 +1,4 @@
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o Minor features:
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- Add GeoIP file digest to extra-info descriptor. Implements
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enhancement 1883.
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@ -622,6 +622,12 @@
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As documented in 2.1 above. See migration notes in section 2.2.1.
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"geoip-db-digest" Digest NL
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[At most once.]
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SHA1 digest of the GeoIP database file that is used to resolve IP
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addresses to country codes.
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("geoip-start" YYYY-MM-DD HH:MM:SS NL)
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("geoip-client-origins" CC=N,CC=N,... NL)
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@ -44,6 +44,9 @@ static strmap_t *country_idxplus1_by_lc_code = NULL;
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/** A list of all known geoip_entry_t, sorted by ip_low. */
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static smartlist_t *geoip_entries = NULL;
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/** SHA1 digest of the GeoIP file to include in extra-info descriptors. */
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static char geoip_digest[DIGEST_LEN];
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/** Return the index of the <b>country</b>'s entry in the GeoIP DB
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* if it is a valid 2-letter country code, otherwise return -1.
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*/
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@ -201,6 +204,7 @@ geoip_load_file(const char *filename, or_options_t *options)
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FILE *f;
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const char *msg = "";
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int severity = options_need_geoip_info(options, &msg) ? LOG_WARN : LOG_INFO;
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crypto_digest_env_t *geoip_digest_env = NULL;
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clear_geoip_db();
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if (!(f = fopen(filename, "r"))) {
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log_fn(severity, LD_GENERAL, "Failed to open GEOIP file %s. %s",
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@ -214,11 +218,13 @@ geoip_load_file(const char *filename, or_options_t *options)
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smartlist_free(geoip_entries);
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}
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geoip_entries = smartlist_create();
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geoip_digest_env = crypto_new_digest_env();
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log_notice(LD_GENERAL, "Parsing GEOIP file.");
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while (!feof(f)) {
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char buf[512];
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if (fgets(buf, (int)sizeof(buf), f) == NULL)
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break;
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crypto_digest_add_bytes(geoip_digest_env, buf, strlen(buf));
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/* FFFF track full country name. */
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geoip_parse_entry(buf);
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}
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@ -231,6 +237,11 @@ geoip_load_file(const char *filename, or_options_t *options)
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* country. */
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refresh_all_country_info();
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/* Remember file digest so that we can include it in our extra-info
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* descriptors. */
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crypto_digest_get_digest(geoip_digest_env, geoip_digest, DIGEST_LEN);
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crypto_free_digest_env(geoip_digest_env);
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return 0;
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}
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@ -278,6 +289,13 @@ geoip_is_loaded(void)
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return geoip_countries != NULL && geoip_entries != NULL;
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}
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/** Return the hex-encoded SHA1 digest of the loaded GeoIP file. */
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const char *
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geoip_db_digest(void)
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{
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return hex_str(geoip_digest, DIGEST_LEN);
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}
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/** Entry in a map from IP address to the last time we've seen an incoming
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* connection from that IP address. Used by bridges only, to track which
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* countries have them blocked. */
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@ -21,6 +21,7 @@ int geoip_get_country_by_ip(uint32_t ipaddr);
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int geoip_get_n_countries(void);
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const char *geoip_get_country_name(country_t num);
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int geoip_is_loaded(void);
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const char *geoip_db_digest(void);
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country_t geoip_get_country(const char *countrycode);
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void geoip_note_client_seen(geoip_client_action_t action,
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@ -2015,6 +2015,17 @@ extrainfo_dump_to_string(char *s, size_t maxlen, extrainfo_t *extrainfo,
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if (options->ExtraInfoStatistics && write_stats_to_extrainfo) {
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char *contents = NULL;
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log_info(LD_GENERAL, "Adding stats to extra-info descriptor.");
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if (geoip_is_loaded()) {
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size_t pos = strlen(s);
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if (tor_snprintf(s + pos, maxlen - strlen(s),
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"geoip-db-digest %s\n",
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geoip_db_digest()) < 0) {
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log_warn(LD_DIR, "Could not write geoip-db-digest to extra-info "
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"descriptor.");
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s[pos] = '\0';
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write_stats_to_extrainfo = 0;
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}
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}
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if (options->DirReqStatistics &&
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load_stats_file("stats"PATH_SEPARATOR"dirreq-stats",
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"dirreq-stats-end", now, &contents) > 0) {
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