commit bcfc383dc94ac90895880d5c9a740df7f163b41d Author: Robert Ransom rransom.8774@gmail.com Date: Tue Sep 20 03:50:45 2011 -0700

Record the HS's address in last_hid_serv_request keys --- src/or/rendclient.c | 43 ++++++++++++++++++++++++++++--------------- 1 files changed, 28 insertions(+), 15 deletions(-)

diff --git a/src/or/rendclient.c b/src/or/rendclient.c index f549593..9088b92 100644 --- a/src/or/rendclient.c +++ b/src/or/rendclient.c @@ -385,9 +385,12 @@ rend_client_introduction_acked(origin_circuit_t *circ, #define REND_HID_SERV_DIR_REQUERY_PERIOD (15 * 60)

/** Contains the last request times to hidden service directories for - * certain queries; keys are strings consisting of base32-encoded - * hidden service directory identities and base32-encoded descriptor IDs; - * values are pointers to timestamps of the last requests. */ + * certain queries; each key is a string consisting of the + * concatenation of a base32-encoded HS directory identity digest, a + * base32-encoded HS descriptor ID, and a hidden service address + * (without the ".onion" part); each value is a pointer to a time_t + * holding the time of the last request for that descriptor ID to that + * HS directory. */ static strmap_t *last_hid_serv_requests_ = NULL;

/** Returns last_hid_serv_requests_, initializing it to a new strmap if @@ -400,23 +403,34 @@ get_last_hid_serv_requests(void) return last_hid_serv_requests_; }

+#define LAST_HID_SERV_REQUEST_KEY_LEN (REND_DESC_ID_V2_LEN_BASE32 + \ + REND_DESC_ID_V2_LEN_BASE32 + \ + REND_SERVICE_ID_LEN_BASE32) + /** Look up the last request time to hidden service directory <b>hs_dir</b> - * for descriptor ID <b>desc_id_base32</b>. If <b>set</b> is non-zero, + * for descriptor ID <b>desc_id_base32</b> for the service specified in + * <b>rend_query</b>. If <b>set</b> is non-zero, * assign the current time <b>now</b> and return that. Otherwise, return * the most recent request time, or 0 if no such request has been sent * before. */ static time_t lookup_last_hid_serv_request(routerstatus_t *hs_dir, - const char *desc_id_base32, time_t now, int set) + const char *desc_id_base32, + const rend_data_t *rend_query, + time_t now, int set) { char hsdir_id_base32[REND_DESC_ID_V2_LEN_BASE32 + 1]; - char hsdir_desc_comb_id[2 * REND_DESC_ID_V2_LEN_BASE32 + 1]; + char hsdir_desc_comb_id[LAST_HID_SERV_REQUEST_KEY_LEN + 1]; time_t *last_request_ptr; strmap_t *last_hid_serv_requests = get_last_hid_serv_requests(); base32_encode(hsdir_id_base32, sizeof(hsdir_id_base32), hs_dir->identity_digest, DIGEST_LEN); - tor_snprintf(hsdir_desc_comb_id, sizeof(hsdir_desc_comb_id), "%s%s", - hsdir_id_base32, desc_id_base32); + tor_snprintf(hsdir_desc_comb_id, sizeof(hsdir_desc_comb_id), "%s%s%s", + hsdir_id_base32, + desc_id_base32, + rend_query->onion_address); + /* XXX023 tor_assert(strlen(hsdir_desc_comb_id) == + LAST_HID_SERV_REQUEST_KEY_LEN); */ if (set) { time_t *oldptr; last_request_ptr = tor_malloc_zero(sizeof(time_t)); @@ -476,12 +490,11 @@ rend_client_purge_last_hid_serv_requests(void) }

/** Determine the responsible hidden service directories for <b>desc_id</b> - * and fetch the descriptor belonging to that ID from one of them. Only - * send a request to hidden service directories that we did not try within - * the last REND_HID_SERV_DIR_REQUERY_PERIOD seconds; on success, return 1, + * and fetch the descriptor with that ID from one of them. Only + * send a request to a hidden service directory that we have not yet tried + * during this attempt to connect to this hidden service; on success, return 1, * in the case that no hidden service directory is left to ask for the - * descriptor, return 0, and in case of a failure -1. <b>query</b> is only - * passed for pretty log statements. */ + * descriptor, return 0, and in case of a failure -1. */ static int directory_get_from_hs_dir(const char *desc_id, const rend_data_t *rend_query) { @@ -504,7 +517,7 @@ directory_get_from_hs_dir(const char *desc_id, const rend_data_t *rend_query) directory_clean_last_hid_serv_requests(); /* Clean request history first. */

SMARTLIST_FOREACH(responsible_dirs, routerstatus_t *, dir, { - if (lookup_last_hid_serv_request(dir, desc_id_base32, 0, 0) + + if (lookup_last_hid_serv_request(dir, desc_id_base32, rend_query, 0, 0) + REND_HID_SERV_DIR_REQUERY_PERIOD >= now || !router_get_by_digest(dir->identity_digest)) SMARTLIST_DEL_CURRENT(responsible_dirs, dir); @@ -521,7 +534,7 @@ directory_get_from_hs_dir(const char *desc_id, const rend_data_t *rend_query)

/* Remember that we are requesting a descriptor from this hidden service * directory now. */ - lookup_last_hid_serv_request(hs_dir, desc_id_base32, now, 1); + lookup_last_hid_serv_request(hs_dir, desc_id_base32, rend_query, now, 1);

/* Encode descriptor cookie for logging purposes. */ if (rend_query->auth_type != REND_NO_AUTH) {