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[tor/master] note another case where strictnodes is considered for exits
by nickm＠torproject.org 27 Apr '11

27 Apr '11

commit bcea155ce0999d19b596a24edd359d1fc0dbe380 Author: Roger Dingledine <arma(a)torproject.org> Date: Fri Mar 11 04:36:24 2011 -0500 note another case where strictnodes is considered for exits --- src/or/connection_edge.c | 2 ++ 1 files changed, 2 insertions(+), 0 deletions(-) diff --git a/src/or/connection_edge.c b/src/or/connection_edge.c index 72e2c8a..fff42be 100644 --- a/src/or/connection_edge.c +++ b/src/or/connection_edge.c @@ -2969,6 +2969,8 @@ connection_edge_is_rendezvous_stream(edge_connection_t *conn) * * If excluded_means_no is 1 and Exclude*Nodes is set and excludes * this relay, return 0. + * XXX022-1090 This StrictNodes business needs more work, a la bug 1090. See + * also git commit ef81649d. */ int connection_ap_can_use_exit(edge_connection_t *conn, routerinfo_t *exit,

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[tor/master] If we're excluded, and StrictNodes is set, do not do self-tests.
by nickm＠torproject.org 27 Apr '11

27 Apr '11

commit ca74badbe95be77bd990c9c4f9c1b26052d4159e Author: Nick Mathewson <nickm(a)torproject.org> Date: Mon Mar 28 14:14:45 2011 -0400 If we're excluded, and StrictNodes is set, do not do self-tests. --- src/or/router.c | 22 ++++++++++++++++++++-- 1 files changed, 20 insertions(+), 2 deletions(-) diff --git a/src/or/router.c b/src/or/router.c index 6993e1e..64cb079 100644 --- a/src/or/router.c +++ b/src/or/router.c @@ -850,14 +850,33 @@ consider_testing_reachability(int test_or, int test_dir) routerinfo_t *me = router_get_my_routerinfo(); int orport_reachable = check_whether_orport_reachable(); tor_addr_t addr; + or_options_t *options = get_options(); if (!me) return; + if (routerset_contains_router(options->ExcludeNodes, me) && + options->StrictNodes) { + /* If we've excluded ourself, and StrictNodes is set, we can't test + * ourself. */ + if (test_or || test_dir) { +#define SELF_EXCLUDED_WARN_INTERVAL 3600 + static ratelim_t warning_limit=RATELIM_INIT(SELF_EXCLUDED_WARN_INTERVAL); + char *msg; + if ((msg = rate_limit_log(&warning_limit, approx_time()))) { + log_warn(LD_CIRC, "Can't peform self-tests for this relay: we have " + "listed ourself in ExcludeNodes, and StrictNodes is set. " + "We will cannot learn whether we are usable, and will not " + "be able to advertise ourself.%s", msg); + tor_free(msg); + } + } + return; + } + if (test_or && (!orport_reachable || !circuit_enough_testing_circs())) { log_info(LD_CIRC, "Testing %s of my ORPort: %s:%d.", !orport_reachable ? "reachability" : "bandwidth", me->address, me->or_port); - /* XXX022-1090 If we ExcludeNodes ourself, should this fail? -RD */ circuit_launch_by_router(CIRCUIT_PURPOSE_TESTING, me, CIRCLAUNCH_NEED_CAPACITY|CIRCLAUNCH_IS_INTERNAL); } @@ -868,7 +887,6 @@ consider_testing_reachability(int test_or, int test_dir) CONN_TYPE_DIR, &addr, me->dir_port, DIR_PURPOSE_FETCH_SERVERDESC)) { /* ask myself, via tor, for my server descriptor. */ - /* XXX022-1090 If we ExcludeNodes ourself, should this fail? -RD */ directory_initiate_command(me->address, &addr, me->or_port, me->dir_port, 0, /* does not matter */

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[tor/master] Note that circuit purpose changing can violate ExcludeNodes
by nickm＠torproject.org 27 Apr '11

27 Apr '11

commit db2fd28308fb019e59280219cf95f09f5208092f Author: Nick Mathewson <nickm(a)torproject.org> Date: Mon Mar 28 16:44:40 2011 -0400 Note that circuit purpose changing can violate ExcludeNodes --- src/or/rendservice.c | 3 +++ 1 files changed, 3 insertions(+), 0 deletions(-) diff --git a/src/or/rendservice.c b/src/or/rendservice.c index 88f1ba3..5b85394 100644 --- a/src/or/rendservice.c +++ b/src/or/rendservice.c @@ -1352,6 +1352,9 @@ rend_service_intro_has_opened(origin_circuit_t *circuit) log_info(LD_CIRC|LD_REND, "We have just finished an introduction " "circuit, but we already have enough. Redefining purpose to " "general."); + /* XXX022-1090: This can wind up violating ExcludeNodes/ + * ExitNodes/ExcludeExitNodes restrictions. + */ TO_CIRCUIT(circuit)->purpose = CIRCUIT_PURPOSE_C_GENERAL; circuit_has_opened(circuit); return;

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[tor/master] If EntryNodes and ExcludeNodes overlap, obey ExcludeNodes.
by nickm＠torproject.org 27 Apr '11

27 Apr '11

commit ad3da535366aeb9b7441f4881899758bc7475168 Author: Roger Dingledine <arma(a)torproject.org> Date: Sat Oct 17 18:54:20 2009 -0400 If EntryNodes and ExcludeNodes overlap, obey ExcludeNodes. --- src/or/circuitbuild.c | 6 ++++-- src/or/config.c | 3 ++- src/or/or.h | 4 ++-- src/or/routerlist.c | 13 ++++++++----- src/or/routerlist.h | 1 + 5 files changed, 17 insertions(+), 10 deletions(-) diff --git a/src/or/circuitbuild.c b/src/or/circuitbuild.c index 2d4d5c0..ebbda21 100644 --- a/src/or/circuitbuild.c +++ b/src/or/circuitbuild.c @@ -2938,6 +2938,7 @@ warn_if_last_router_excluded(origin_circuit_t *circ, const extend_info_t *exit) description,exit->nickname, rs==options->ExcludeNodes?"":" or ExcludeExitNodes", (int)purpose); + /* XXX022-1090 "using anyway" is freaking people out -RD */ circuit_log_path(LOG_WARN, domain, circ); } @@ -3979,7 +3980,8 @@ entry_guards_prepend_from_config(or_options_t *options) * Perhaps we should do this calculation once whenever the list of routers * changes or the entrynodes setting changes. */ - routerset_get_all_routers(entry_routers, options->EntryNodes, 0); + routerset_get_all_routers(entry_routers, options->EntryNodes, + options->ExcludeNodes, 0); SMARTLIST_FOREACH(entry_routers, routerinfo_t *, ri, smartlist_add(entry_fps,ri->cache_info.identity_digest)); SMARTLIST_FOREACH(entry_guards, entry_guard_t *, e, { @@ -4155,7 +4157,7 @@ choose_random_entry(cpath_build_state_t *state) goto retry; } if (!r && entry_list_is_constrained(options) && consider_exit_family) { - /* still no? if we're using bridges or have strictentrynodes + /* still no? if we're using bridges or have StrictNodes * set, and our chosen exit is in the same family as all our * bridges/entry guards, then be flexible about families. */ consider_exit_family = 0; diff --git a/src/or/config.c b/src/or/config.c index 9675c73..bd904dc 100644 --- a/src/or/config.c +++ b/src/or/config.c @@ -1412,7 +1412,8 @@ options_act(or_options_t *old_options) /* Check if we need to parse and add the EntryNodes config option. */ if (options->EntryNodes && (!old_options || - (!routerset_equal(old_options->EntryNodes,options->EntryNodes)))) + !routerset_equal(old_options->EntryNodes,options->EntryNodes) || + !routerset_equal(old_options->ExcludeNodes,options->ExcludeNodes))) entry_nodes_should_be_added(); /* Since our options changed, we might need to regenerate and upload our diff --git a/src/or/or.h b/src/or/or.h index 06e6d7f..50a1223 100644 --- a/src/or/or.h +++ b/src/or/or.h @@ -2387,7 +2387,7 @@ typedef struct { * ORs not to consider as exits. */ /** Union of ExcludeNodes and ExcludeExitNodes */ - struct routerset_t *_ExcludeExitNodesUnion; + routerset_t *_ExcludeExitNodesUnion; int DisableAllSwap; /**< Boolean: Attempt to call mlockall() on our * process for all current and future memory. */ @@ -3487,7 +3487,7 @@ typedef struct trusted_dir_server_t { #define ROUTER_MAX_DECLARED_BANDWIDTH INT32_MAX -/* Flags for pick_directory_server and pick_trusteddirserver. */ +/* Flags for pick_directory_server() and pick_trusteddirserver(). */ /** Flag to indicate that we should not automatically be willing to use * ourself to answer a directory request. * Passed to router_pick_directory_server (et al).*/ diff --git a/src/or/routerlist.c b/src/or/routerlist.c index c02654f..5d9ab8c 100644 --- a/src/or/routerlist.c +++ b/src/or/routerlist.c @@ -5516,10 +5516,11 @@ routerset_contains_routerstatus(const routerset_t *set, routerstatus_t *rs) } /** Add every known routerinfo_t that is a member of routerset to - * out. If running_only, only add the running ones. */ + * out, but never add any that are part of excludeset. + * If running_only, only add the running ones. */ void routerset_get_all_routers(smartlist_t *out, const routerset_t *routerset, - int running_only) + const routerset_t *excludeset, int running_only) { tor_assert(out); if (!routerset || !routerset->list) @@ -5529,12 +5530,13 @@ routerset_get_all_routers(smartlist_t *out, const routerset_t *routerset, if (routerset_is_list(routerset)) { /* No routers are specified by type; all are given by name or digest. - * we can do a lookup in O(len(list)). */ + * we can do a lookup in O(len(routerset)). */ SMARTLIST_FOREACH(routerset->list, const char *, name, { routerinfo_t *router = router_get_by_nickname(name, 1); if (router) { if (!running_only || router->is_running) - smartlist_add(out, router); + if (!routerset_contains_router(excludeset, router)) + smartlist_add(out, router); } }); } else { @@ -5544,7 +5546,8 @@ routerset_get_all_routers(smartlist_t *out, const routerset_t *routerset, SMARTLIST_FOREACH(rl->routers, routerinfo_t *, router, { if (running_only && !router->is_running) continue; - if (routerset_contains_router(routerset, router)) + if (routerset_contains_router(routerset, router) && + !routerset_contains_router(excludeset, router)) smartlist_add(out, router); }); } diff --git a/src/or/routerlist.h b/src/or/routerlist.h index ca42811..cd0eb95 100644 --- a/src/or/routerlist.h +++ b/src/or/routerlist.h @@ -173,6 +173,7 @@ int routerset_contains_routerstatus(const routerset_t *set, int routerset_contains_extendinfo(const routerset_t *set, const extend_info_t *ei); void routerset_get_all_routers(smartlist_t *out, const routerset_t *routerset, + const routerset_t *excludeset, int running_only); void routersets_get_disjunction(smartlist_t *target, const smartlist_t *source, const routerset_t *include,

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[tor/master] refuse excluded hidserv nodes if strictnodes
by nickm＠torproject.org 27 Apr '11

27 Apr '11

commit 82178a81f6748c9b26bdc8a5da36dd34b689281b Author: Roger Dingledine <arma(a)torproject.org> Date: Sat Oct 17 18:52:18 2009 -0400 refuse excluded hidserv nodes if strictnodes Make hidden services more flaky for people who set both ExcludeNodes and StrictNodes. Not recommended, especially for hidden service operators. --- src/or/rendclient.c | 56 +++++++++++++++++++++++++++++++++++++++++++++---- src/or/rendservice.c | 14 +++++++++++- 2 files changed, 64 insertions(+), 6 deletions(-) diff --git a/src/or/rendclient.c b/src/or/rendclient.c index 8ac909f..90304c3 100644 --- a/src/or/rendclient.c +++ b/src/or/rendclient.c @@ -22,6 +22,9 @@ #include "rephist.h" #include "routerlist.h" +static extend_info_t *rend_client_get_random_intro_impl( + const rend_data_t *rend_query, const int strict); + /** Called when we've established a circuit to an introduction point: * send the introduction request. */ void @@ -739,10 +742,31 @@ rend_client_desc_trynow(const char *query) extend_info_t * rend_client_get_random_intro(const rend_data_t *rend_query) { + extend_info_t *result; + /* See if we can get a node that complies with ExcludeNodes */ + if ((result = rend_client_get_random_intro_impl(rend_query, 1))) + return result; + /* If not, and StrictNodes is not set, see if we can return any old node + */ + if (!get_options()->StrictNodes) + return rend_client_get_random_intro_impl(rend_query, 0); + return NULL; +} + +/** As rend_client_get_random_intro, except assume that StrictNodes is set + * iff strict is true. + */ +static extend_info_t * +rend_client_get_random_intro_impl(const rend_data_t *rend_query, + const int strict) +{ int i; rend_cache_entry_t *entry; rend_intro_point_t *intro; routerinfo_t *router; + or_options_t *options = get_options(); + smartlist_t *usable_nodes; + int n_excluded = 0; if (rend_cache_lookup_entry(rend_query->onion_address, -1, &entry) < 1) { log_warn(LD_REND, @@ -750,13 +774,26 @@ rend_client_get_random_intro(const rend_data_t *rend_query) safe_str_client(rend_query->onion_address)); return NULL; } + /* We'll keep a separate list of the usable nodes. If this becomes empty, + * no nodes are usable. */ + usable_nodes = smartlist_create(); + smartlist_add_all(usable_nodes, entry->parsed->intro_nodes); again: - if (smartlist_len(entry->parsed->intro_nodes) == 0) + if (smartlist_len(usable_nodes) == 0) { + if (n_excluded && get_options()->StrictNodes) { + /* We only want to warn if StrictNodes is really set. Otherwise + * we're just about to retry anyways. + */ + log_warn(LD_REND, "All introduction points for hidden service are " + "at excluded relays, and StrictNodes is set. Skipping."); + } + smartlist_free(usable_nodes); return NULL; + } - i = crypto_rand_int(smartlist_len(entry->parsed->intro_nodes)); - intro = smartlist_get(entry->parsed->intro_nodes, i); + i = crypto_rand_int(smartlist_len(usable_nodes)); + intro = smartlist_get(usable_nodes, i); /* Do we need to look up the router or is the extend info complete? */ if (!intro->extend_info->onion_key) { if (tor_digest_is_zero(intro->extend_info->identity_digest)) @@ -766,13 +803,22 @@ rend_client_get_random_intro(const rend_data_t *rend_query) if (!router) { log_info(LD_REND, "Unknown router with nickname '%s'; trying another.", intro->extend_info->nickname); - rend_intro_point_free(intro); - smartlist_del(entry->parsed->intro_nodes, i); + smartlist_del(usable_nodes, i); goto again; } extend_info_free(intro->extend_info); intro->extend_info = extend_info_from_router(router); } + /* Check if we should refuse to talk to this router. */ + if (options->ExcludeNodes && strict && + routerset_contains_extendinfo(options->ExcludeNodes, + intro->extend_info)) { + n_excluded++; + smartlist_del(usable_nodes, i); + goto again; + } + + smartlist_free(usable_nodes); return extend_info_dup(intro->extend_info); } diff --git a/src/or/rendservice.c b/src/or/rendservice.c index 4503982..88f1ba3 100644 --- a/src/or/rendservice.c +++ b/src/or/rendservice.c @@ -848,6 +848,7 @@ clean_accepted_intros(rend_service_t *service, time_t now) /** Respond to an INTRODUCE2 cell by launching a circuit to the chosen * rendezvous point. */ + /* XXX022 this function sure could use some organizing. -RD */ int rend_service_introduce(origin_circuit_t *circuit, const uint8_t *request, size_t request_len) @@ -875,6 +876,8 @@ rend_service_introduce(origin_circuit_t *circuit, const uint8_t *request, time_t now = time(NULL); char diffie_hellman_hash[DIGEST_LEN]; time_t *access_time; + or_options_t *options = get_options(); + tor_assert(circuit->rend_data); base32_encode(serviceid, REND_SERVICE_ID_LEN_BASE32+1, @@ -1047,6 +1050,15 @@ rend_service_introduce(origin_circuit_t *circuit, const uint8_t *request, goto err; } + /* Check if we'd refuse to talk to this router */ + if (options->ExcludeNodes && options->StrictNodes && + routerset_contains_extendinfo(options->ExcludeNodes, extend_info)) { + log_warn(LD_REND, "Client asked to rendezvous at a relay that we " + "exclude, and StrictNodes is set. Refusing service."); + reason = END_CIRC_REASON_INTERNAL; /* XXX might leak why we refused */ + goto err; + } + r_cookie = ptr; base16_encode(hexcookie,9,r_cookie,4); @@ -1394,7 +1406,7 @@ rend_service_intro_has_opened(origin_circuit_t *circuit) /** Called when we get an INTRO_ESTABLISHED cell; mark the circuit as a * live introduction point, and note that the service descriptor is - * now out-of-date.*/ + * now out-of-date. */ int rend_service_intro_established(origin_circuit_t *circuit, const uint8_t *request,

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[tor/release-0.2.2] Merge remote-tracking branch 'arma/bug1090-part1-squashed' into bug1090-part1-squashed
by arma＠torproject.org 27 Apr '11

27 Apr '11

commit 99621bc5a629a81a5a823ce21ac3d967443d0e12 Merge: 8f6cb93 0c40dda Author: Nick Mathewson <nickm(a)torproject.org> Date: Wed Apr 27 13:45:28 2011 -0400 Merge remote-tracking branch 'arma/bug1090-part1-squashed' into bug1090-part1-squashed src/or/rendclient.c | 3 ++- 1 files changed, 2 insertions(+), 1 deletions(-)

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[tor/release-0.2.2] minor tweaks to manpage
by arma＠torproject.org 27 Apr '11

27 Apr '11

commit 0f48e8fa9ad68f56c7b1076872848bd0f1e524b2 Author: Roger Dingledine <arma(a)torproject.org> Date: Wed Apr 27 14:04:50 2011 -0400 minor tweaks to manpage --- doc/tor.1.txt | 12 +++++++----- 1 files changed, 7 insertions(+), 5 deletions(-) diff --git a/doc/tor.1.txt b/doc/tor.1.txt index 866a702..04a0537 100644 --- a/doc/tor.1.txt +++ b/doc/tor.1.txt @@ -511,7 +511,7 @@ The following options are useful only for clients (that is, if patterns of nodes to never use when picking an exit node---that is, a node that delivers traffic for you outside the Tor network. Note that any node listed in ExcludeNodes is automatically considered to be part of this - list too. See also the caveats on the "ExitNodes" option below + list too. See also the caveats on the "ExitNodes" option below. **ExitNodes** __node__,__node__,__...__:: @@ -527,18 +527,20 @@ The following options are useful only for clients (that is, if Note also that not every circuit is used to deliver traffic outside of the Tor network. It is normal to see non-exit circuits (such as those used to connect to hidden services, those that do directory fetches, - those used for self-tests, and so on) that end at a non-exit node. To + those used for relay reachability self-tests, and so on) that end + at a non-exit node. To keep a node from being used entirely, see ExcludeNodes and StrictNodes. + + The ExcludeNodes option overrides this option: any node listed in both ExitNodes and ExcludeNodes is treated as excluded. + + - The .exit address notation, if enabled, overrides this option. + The .exit address notation, if enabled via AllowDotExit, overrides + this option. **EntryNodes** __node__,__node__,__...__:: A list of identity fingerprints and nicknames of nodes to use for the first hop in your normal circuits. (Country codes and - address patterns are not yet supported.) This includes all + address patterns are not yet supported.) Normal circuits include all circuits except for direct connections to directory servers. The Bridge option overrides this option; if you have configured bridges and UseBridges is 1, the Bridges are used as your entry nodes. + @@ -553,7 +555,7 @@ The following options are useful only for clients (that is, if still try to avoid nodes in the ExcludeNodes list, but it will err on the side of avoiding unexpected errors. Specifically, StrictNodes 0 tells Tor that it is okay to use an excluded node when it is *necessary* to - perform self-tests, connect to + perform relay reachability self-tests, connect to a hidden service, provide a hidden service to a client, fulfill a .exit request, upload directory information, or download directory information. (Default: 0)

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[tor/release-0.2.2] Merge branch 'maint-0.2.2' into release-0.2.2
by arma＠torproject.org 27 Apr '11

27 Apr '11

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[tor/release-0.2.2] Do not try to download descriptors for bridges in ExcludeNodes.
by arma＠torproject.org 27 Apr '11

27 Apr '11

commit b59a289365169cca228566826f19838403320cb2 Author: Nick Mathewson <nickm(a)torproject.org> Date: Sun Apr 3 18:12:26 2011 -0400 Do not try to download descriptors for bridges in ExcludeNodes. --- src/or/circuitbuild.c | 33 ++++++++++++++++++++++++++++++++- 1 files changed, 32 insertions(+), 1 deletions(-) diff --git a/src/or/circuitbuild.c b/src/or/circuitbuild.c index 714d636..4832cae 100644 --- a/src/or/circuitbuild.c +++ b/src/or/circuitbuild.c @@ -4539,6 +4539,24 @@ bridge_add_from_config(const tor_addr_t *addr, uint16_t port, char *digest) smartlist_add(bridge_list, b); } +/** Return true iff routerset contains the bridge bridge. */ +static int +routerset_contains_bridge(const routerset_t *routerset, + const bridge_info_t *bridge) +{ + int result; + extend_info_t *extinfo; + tor_assert(bridge); + if (!routerset) + return 0; + + extinfo = extend_info_alloc( + NULL, bridge->identity, NULL, &bridge->addr, bridge->port); + result = routerset_contains_extendinfo(routerset, extinfo); + extend_info_free(extinfo); + return result; +} + /** If digest is one of our known bridges, return it. */ static bridge_info_t * find_bridge_by_digest(const char *digest) @@ -4557,6 +4575,7 @@ static void launch_direct_bridge_descriptor_fetch(bridge_info_t *bridge) { char *address; + or_options_t *options = get_options(); if (connection_get_by_type_addr_port_purpose( CONN_TYPE_DIR, &bridge->addr, bridge->port, @@ -4564,7 +4583,13 @@ launch_direct_bridge_descriptor_fetch(bridge_info_t *bridge) return; /* it's already on the way */ address = tor_dup_addr(&bridge->addr); - /* XXX022-1090 if we ExcludeNodes this bridge, should this step fail? -RD */ + if (routerset_contains_bridge(options->ExcludeNodes, bridge)) { + download_status_mark_impossible(&bridge->fetch_status); + log_warn(LD_APP, "Not using bridge at %s: it is in ExcludeNodes.", + safe_str_client(fmt_addr(&bridge->addr))); + return; + } + directory_initiate_command(address, &bridge->addr, bridge->port, 0, 0, /* does not matter */ @@ -4605,6 +4630,12 @@ fetch_bridge_descriptors(or_options_t *options, time_t now) if (!download_status_is_ready(&bridge->fetch_status, now, IMPOSSIBLE_TO_DOWNLOAD)) continue; /* don't bother, no need to retry yet */ + if (routerset_contains_bridge(options->ExcludeNodes, bridge)) { + download_status_mark_impossible(&bridge->fetch_status); + log_warn(LD_APP, "Not using bridge at %s: it is in ExcludeNodes.", + safe_str_client(fmt_addr(&bridge->addr))); + continue; + } /* schedule another fetch as if this one will fail, in case it does */ download_status_failed(&bridge->fetch_status, 0);

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[tor/release-0.2.2] If we have chosen an exit that shares a family with all bridges, fail the circuit
by arma＠torproject.org 27 Apr '11

27 Apr '11

commit 84f0e87c6a6629d047a39f658b7f7c96767219ca Author: Nick Mathewson <nickm(a)torproject.org> Date: Sun Apr 3 18:20:19 2011 -0400 If we have chosen an exit that shares a family with all bridges, fail the circuit We could probably do something smarter here, but the situation is unusual enough that it's okay to just fail the circuit. --- src/or/circuitbuild.c | 7 +++++-- 1 files changed, 5 insertions(+), 2 deletions(-) diff --git a/src/or/circuitbuild.c b/src/or/circuitbuild.c index 4832cae..c58509f 100644 --- a/src/or/circuitbuild.c +++ b/src/or/circuitbuild.c @@ -4130,15 +4130,18 @@ choose_random_entry(cpath_build_state_t *state) need_capacity = 0; goto retry; } +#if 0 + /* Removing this retry logic: if we only allow one exit, and it is in the + same family as all our entries, then we are just plain not going to win + here. */ if (!r && entry_list_is_constrained(options) && consider_exit_family) { /* still no? if we're using bridges, * and our chosen exit is in the same family as all our * bridges, then be flexible about families. */ - /* XXXX022-1090 This is probably not what people want. Better to choose - * a new exit. */ consider_exit_family = 0; goto retry; } +#endif /* live_entry_guards may be empty below. Oh well, we tried. */ }

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