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Fetch cached running-routers from servers that serve it (that is, authdirservers, and servers running 0.0.9rc5-cvs or later.)
svn:r3018
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b6b07d1d98
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8
doc/TODO
8
doc/TODO
@ -12,12 +12,14 @@ ARMA - arma claims
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For 0.0.9:
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N&R- bring tor-spec up to date
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N . cache and serve running-routers on other nodes?
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. cache running-routers
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- download running-routers from servers running rc5-cvs or later
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o cache and serve running-routers on other nodes?
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o cache running-routers
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o download running-routers from servers running rc5-cvs or later
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N - pump up periods for fetching things; figure out how to do this
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backward-compatibily, so that people who did set dirfetchpostperiod
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get the right behavior.
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- If dirport is set, we should have a maximum dirfetchperiod and
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a maximum statusfetchperiod, or else we'll serve very stale stuff.
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N - Adapt version parsing code to handle new version scheme; document new
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version scheme.
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N&R. make loglevels info,debug less noisy
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@ -152,21 +152,22 @@ directory_get_from_dirserver(uint8_t purpose, const char *resource)
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trusted_dir_server_t *ds = NULL;
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int fascistfirewall = get_options()->FascistFirewall;
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if (purpose == DIR_PURPOSE_FETCH_DIR) {
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if (purpose == DIR_PURPOSE_FETCH_DIR ||
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purpose == DIR_PURPOSE_FETCH_RUNNING_LIST) {
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if (advertised_server_mode()) {
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/* only ask authdirservers, and don't ask myself */
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ds = router_pick_trusteddirserver(1, fascistfirewall);
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} else {
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/* anybody with a non-zero dirport will do */
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r = router_pick_directory_server(1, fascistfirewall);
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r = router_pick_directory_server(1, fascistfirewall,
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purpose==DIR_PURPOSE_FETCH_RUNNING_LIST);
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if (!r) {
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log_fn(LOG_INFO, "No router found for directory; falling back to dirserver list");
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log_fn(LOG_INFO, "No router found for %s; falling back to dirserver list",
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purpose == DIR_PURPOSE_FETCH_RUNNING_LIST
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? "status list" : "directory");
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ds = router_pick_trusteddirserver(1, fascistfirewall);
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}
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}
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} else if (purpose == DIR_PURPOSE_FETCH_RUNNING_LIST) {
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/* right now, running-routers isn't cached, so ask a trusted directory */
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ds = router_pick_trusteddirserver(0, fascistfirewall);
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} else { // (purpose == DIR_PURPOSE_FETCH_RENDDESC)
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/* only ask authdirservers, any of them will do */
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/* Never use fascistfirewall; we're going via Tor. */
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@ -1560,7 +1560,7 @@ typedef struct trusted_dir_server_t {
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int router_reload_router_list(void);
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void router_get_trusted_dir_servers(smartlist_t **outp);
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routerinfo_t *router_pick_directory_server(int requireothers, int fascistfirewall);
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routerinfo_t *router_pick_directory_server(int requireothers, int fascistfirewall, int for_running_routers);
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trusted_dir_server_t *router_pick_trusteddirserver(int requireothers, int fascistfirewall);
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int all_trusted_directory_servers_down(void);
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struct smartlist_t;
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@ -20,7 +20,8 @@ static smartlist_t *trusted_dir_servers = NULL;
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/* static function prototypes */
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static routerinfo_t *
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router_pick_directory_server_impl(int requireothers, int fascistfirewall);
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router_pick_directory_server_impl(int requireothers, int fascistfirewall,
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int for_runningrouters);
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static trusted_dir_server_t *
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router_pick_trusteddirserver_impl(int requireother, int fascistfirewall);
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static void mark_all_trusteddirservers_up(void);
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@ -87,15 +88,20 @@ void router_get_trusted_dir_servers(smartlist_t **outp)
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/** Try to find a running dirserver. If there are no running dirservers
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* in our routerlist, set all the authoritative ones as running again,
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* and pick one. If there are no dirservers at all in our routerlist,
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* reload the routerlist and try one last time. */
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* reload the routerlist and try one last time. If for_runningrouters is
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* true, then only pick a dirserver that can answer runningrouters queries
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* (that is, a trusted dirserver, or one running 0.0.9rc5-cvs or later).
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*/
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routerinfo_t *router_pick_directory_server(int requireothers,
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int fascistfirewall) {
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int fascistfirewall,
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int for_runningrouters) {
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routerinfo_t *choice;
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if (!routerlist)
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return NULL;
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choice = router_pick_directory_server_impl(requireothers, fascistfirewall);
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choice = router_pick_directory_server_impl(requireothers, fascistfirewall,
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for_runningrouters);
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if (choice)
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return choice;
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@ -103,7 +109,8 @@ routerinfo_t *router_pick_directory_server(int requireothers,
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/* mark all authdirservers as up again */
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mark_all_trusteddirservers_up();
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/* try again */
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choice = router_pick_directory_server_impl(requireothers, fascistfirewall);
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choice = router_pick_directory_server_impl(requireothers, fascistfirewall,
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for_runningrouters);
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if (choice)
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return choice;
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@ -114,7 +121,8 @@ routerinfo_t *router_pick_directory_server(int requireothers,
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return NULL;
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}
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/* give it one last try */
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choice = router_pick_directory_server_impl(requireothers, 0);
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choice = router_pick_directory_server_impl(requireothers, 0,
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for_runningrouters);
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return choice;
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}
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@ -149,7 +157,8 @@ trusted_dir_server_t *router_pick_trusteddirserver(int requireothers,
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* it has to be a trusted server. If requireothers, it cannot be us.
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*/
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static routerinfo_t *
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router_pick_directory_server_impl(int requireothers, int fascistfirewall)
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router_pick_directory_server_impl(int requireothers, int fascistfirewall,
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int for_runningrouters)
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{
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int i;
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routerinfo_t *router;
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@ -175,6 +184,11 @@ router_pick_directory_server_impl(int requireothers, int fascistfirewall)
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if (!smartlist_string_isin(get_options()->FirewallPorts, buf))
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continue;
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}
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/* before 0.0.9rc5-cvs, only trusted dirservers served status info. */
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if (for_runningrouters &&
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!(tor_version_as_new_as(router->platform,"0.0.9rc5-cvs") ||
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router_digest_is_trusted_dir(router->identity_digest)))
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continue;
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smartlist_add(sl, router);
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}
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