commit 557a0c83f36eb1ea9a6c96aa94a488f4ce92f9ba Author: Nick Mathewson nickm@torproject.org Date: Thu Feb 19 09:27:42 2015 -0500

Do not try to download an EI for which we don't have a matching SD.

This quiets some log messages for #13762, and adds a better INFO message for the underlying confusion. --- changes/bug13762_quiet | 5 +++++ src/or/routerlist.c | 43 ++++++++++++++++++++++++++++++++----------- 2 files changed, 37 insertions(+), 11 deletions(-)

diff --git a/changes/bug13762_quiet b/changes/bug13762_quiet new file mode 100644 index 0000000..df541cc --- /dev/null +++ b/changes/bug13762_quiet @@ -0,0 +1,5 @@ + o Minor bugfixes (directory authority): + - Do not attempt to download extrainfo documents which we will be + unable to validate with a matching server descriptor. Fixes bug + 13762; bugfix on 0.2.0.1-alpha. + diff --git a/src/or/routerlist.c b/src/or/routerlist.c index a0437ce..375732a 100644 --- a/src/or/routerlist.c +++ b/src/or/routerlist.c @@ -4705,7 +4705,34 @@ update_extrainfo_downloads(time_t now) ++n_pending; continue; } - if (router_get_by_extrainfo_digest(d) != sd) { + + const signed_descriptor_t *sd2 = router_get_by_extrainfo_digest(d); + if (sd2 != sd) { + if (sd2 != NULL) { + char d1[HEX_DIGEST_LEN+1], d2[HEX_DIGEST_LEN+1]; + char d3[HEX_DIGEST_LEN+1], d4[HEX_DIGEST_LEN+1]; + base16_encode(d1, sizeof(d1), sd->identity_digest, DIGEST_LEN); + base16_encode(d2, sizeof(d2), sd2->identity_digest, DIGEST_LEN); + base16_encode(d3, sizeof(d3), d, DIGEST_LEN); + base16_encode(d4, sizeof(d3), sd2->extra_info_digest, DIGEST_LEN); + + log_info(LD_DIR, "Found an entry in %s with mismatched " + "router_get_by_extrainfo_digest() value. This has ID %s " + "but the entry in the map has ID %s. This has EI digest " + "%s and the entry in the map has EI digest %s.", + old_routers?"old_routers":"routers", + d1, d2, d3, d4); + } else { + char d1[HEX_DIGEST_LEN+1], d2[HEX_DIGEST_LEN+1]; + base16_encode(d1, sizeof(d1), sd->identity_digest, DIGEST_LEN); + base16_encode(d2, sizeof(d2), d, DIGEST_LEN); + + log_info(LD_DIR, "Found an entry in %s with NULL " + "router_get_by_extrainfo_digest() value. This has ID %s " + "and EI digest %s.", + old_routers?"old_routers":"routers", + d1, d2); + } ++n_bogus[old_routers]; continue; } @@ -4715,16 +4742,10 @@ update_extrainfo_downloads(time_t now) digestmap_free(pending, NULL);

log_info(LD_DIR, "Extrainfo download status: %d router with no ei, %d " - "with present ei, %d delaying, %d pending, %d downloadable.", - n_no_ei, n_have, n_delay, n_pending, smartlist_len(wanted)); - - if (n_bogus[0] || n_bogus[1]) { - static ratelim_t bogus_ei_warning = RATELIM_INIT(1800); - log_fn_ratelim(&bogus_ei_warning, LOG_WARN, LD_BUG, - "While downloading extrainfo documents, I found %d " - "inconsistencies in routers and %d inconsistencies in " - "old_routers.", n_bogus[0], n_bogus[1]); - } + "with present ei, %d delaying, %d pending, %d downloadable, %d " + "bogus in routers, %d bogus in old_routers", + n_no_ei, n_have, n_delay, n_pending, smartlist_len(wanted), + n_bogus[0], n_bogus[1]);

smartlist_shuffle(wanted);