tor-commits September 2017

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[tor/master] Merge branch 'maint-0.3.1'
by nickm＠torproject.org 15 Sep '17

15 Sep '17

commit 199f13755b5bba85ee39ba9d60387aeef8225844 Merge: 2c9f8badb b440560b8 Author: Nick Mathewson <nickm(a)torproject.org> Date: Fri Sep 15 09:33:41 2017 -0400 Merge branch 'maint-0.3.1' "ours" merge to avoid version bump

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[tor/master] prop224 test: Enrich the client_service_hsdir_set_sync() test.
by nickm＠torproject.org 15 Sep '17

15 Sep '17

commit 715a8ea81c007c06749032ef39fbee235fcbbcff Author: George Kadianakis <desnacked(a)riseup.net> Date: Fri Sep 8 23:21:34 2017 +0300 prop224 test: Enrich the client_service_hsdir_set_sync() test. Do two major improvements: a) Make the client pick 6 HSDirs instead of just 1 and make sure they all match the service's HSDirs. b) Test two additional missing scenarios borrowed from the test_reachability() test. --- src/test/test_hs_common.c | 120 +++++++++++++++++++++++++++++++++++----------- 1 file changed, 92 insertions(+), 28 deletions(-) diff --git a/src/test/test_hs_common.c b/src/test/test_hs_common.c index dc146326b..9959bf14e 100644 --- a/src/test/test_hs_common.c +++ b/src/test/test_hs_common.c @@ -1453,31 +1453,57 @@ helper_client_pick_hsdir(const ed25519_public_key_t *onion_identity_pk, ; } -/** Set the consensus and system time based on between_srv_and_tp. If - * between_srv_and_tp is set, then set the time to be inside the time - * segment between SRV#N and TP#N. */ +#define EARLY_IN_SRV_TO_TP 0 +#define LATE_IN_SRV_TO_TP 1 +#define EARLY_IN_TP_TO_SRV 2 +#define LATE_IN_TP_TO_SRV 3 + +/** Set the consensus and system time based on position. See the + * following diagram for details: + * + * +------------------------------------------------------------------+ + * | | + * | 00:00 12:00 00:00 12:00 00:00 12:00 | + * | SRV#1 TP#1 SRV#2 TP#2 SRV#3 TP#3 | + * | | + * | $==========|-----------$===========|----------$===========| | + * | | + * | | + * +------------------------------------------------------------------+ + */ static time_t -helper_set_consensus_and_system_time(networkstatus_t *ns, - int between_srv_and_tp) +helper_set_consensus_and_system_time(networkstatus_t *ns, int position) { - time_t real_time; + time_t real_time = 0; /* The period between SRV#N and TP#N is from 00:00 to 12:00 UTC. Consensus * valid_after is what matters here, the rest is just to specify the voting * period correctly. */ - if (between_srv_and_tp) { + if (position == LATE_IN_SRV_TO_TP) { parse_rfc1123_time("Wed, 13 Apr 2016 11:00:00 UTC", &ns->valid_after); parse_rfc1123_time("Wed, 13 Apr 2016 12:00:00 UTC", &ns->fresh_until); parse_rfc1123_time("Wed, 13 Apr 2016 14:00:00 UTC", &ns->valid_until); - } else { + } else if (position == EARLY_IN_TP_TO_SRV) { parse_rfc1123_time("Wed, 13 Apr 2016 13:00:00 UTC", &ns->valid_after); parse_rfc1123_time("Wed, 13 Apr 2016 14:00:00 UTC", &ns->fresh_until); parse_rfc1123_time("Wed, 13 Apr 2016 16:00:00 UTC", &ns->valid_until); + } else if (position == LATE_IN_TP_TO_SRV) { + parse_rfc1123_time("Wed, 13 Apr 2016 23:00:00 UTC", &ns->valid_after); + parse_rfc1123_time("Wed, 14 Apr 2016 00:00:00 UTC", &ns->fresh_until); + parse_rfc1123_time("Wed, 14 Apr 2016 02:00:00 UTC", &ns->valid_until); + } else if (position == EARLY_IN_SRV_TO_TP) { + parse_rfc1123_time("Wed, 14 Apr 2016 01:00:00 UTC", &ns->valid_after); + parse_rfc1123_time("Wed, 14 Apr 2016 02:00:00 UTC", &ns->fresh_until); + parse_rfc1123_time("Wed, 14 Apr 2016 04:00:00 UTC", &ns->valid_until); + } else { + tt_assert(0); } /* Set system time: pretend to be just 2 minutes before consensus expiry */ real_time = ns->valid_until - 120; update_approx_time(real_time); + + done: return real_time; } @@ -1485,8 +1511,7 @@ helper_set_consensus_and_system_time(networkstatus_t *ns, * test_client_service_sync() */ static void helper_test_hsdir_sync(networkstatus_t *ns, - int service_between_srv_and_tp, - int client_between_srv_and_tp, + int service_position, int client_position, int client_fetches_next_desc) { hs_service_descriptor_t *desc; @@ -1503,8 +1528,7 @@ helper_test_hsdir_sync(networkstatus_t *ns, */ /* 1) Initialize service time: consensus and real time */ - time_t now = helper_set_consensus_and_system_time(ns, - service_between_srv_and_tp); + time_t now = helper_set_consensus_and_system_time(ns, service_position); helper_initialize_big_hash_ring(ns); /* 2) Initialize service */ @@ -1519,7 +1543,7 @@ helper_test_hsdir_sync(networkstatus_t *ns, tt_int_op(smartlist_len(desc->previous_hsdirs), OP_EQ, 6); /* 3) Initialize client time */ - now = helper_set_consensus_and_system_time(ns, client_between_srv_and_tp); + now = helper_set_consensus_and_system_time(ns, client_position); cleanup_nodelist(); SMARTLIST_FOREACH(ns->routerstatus_list, @@ -1527,22 +1551,29 @@ helper_test_hsdir_sync(networkstatus_t *ns, smartlist_clear(ns->routerstatus_list); helper_initialize_big_hash_ring(ns); - /* 4) Fetch desc as client */ - char client_hsdir_b64_digest[BASE64_DIGEST_LEN+1] = {0}; - helper_client_pick_hsdir(&service->keys.identity_pk, - client_hsdir_b64_digest); - /* Cleanup right now so we don't memleak on error. */ - cleanup_nodelist(); + /* 4) Pick 6 HSDirs as a client and check that they were also chosen by the + service. */ + for (int y = 0 ; y < 6 ; y++) { + char client_hsdir_b64_digest[BASE64_DIGEST_LEN+1] = {0}; + helper_client_pick_hsdir(&service->keys.identity_pk, + client_hsdir_b64_digest); + + /* CHECK: Go through the hsdirs chosen by the service and make sure that it + * contains the one picked by the client! */ + retval = smartlist_contains_string(desc->previous_hsdirs, + client_hsdir_b64_digest); + tt_int_op(retval, OP_EQ, 1); + } + + /* Finally, try to pick a 7th hsdir and see that NULL is returned since we + * exhausted all of them: */ + tt_assert(!pick_hsdir_v3(&service->keys.identity_pk)); - /* CHECK: Go through the hsdirs chosen by the service and make sure that it - * contains the one picked by the client! */ - retval = smartlist_contains_string(desc->previous_hsdirs, - client_hsdir_b64_digest); - tt_int_op(retval, OP_EQ, 1); done: /* At the end: free all services and initialize the subsystem again, we will * need it for next scenario. */ + cleanup_nodelist(); hs_service_free_all(); hs_service_init(); SMARTLIST_FOREACH(ns->routerstatus_list, @@ -1606,7 +1637,7 @@ test_client_service_hsdir_set_sync(void *arg) * | S C | * +------------------------------------------------------------------+ */ - helper_test_hsdir_sync(ns, 1, 1, 0); + helper_test_hsdir_sync(ns, LATE_IN_SRV_TO_TP, LATE_IN_SRV_TO_TP, 0); /* b) Scenario where both client and service are in the time segment between * TP#N and SRV#N+1. At this time the client fetches the second HS @@ -1622,7 +1653,7 @@ test_client_service_hsdir_set_sync(void *arg) * | S C | * +------------------------------------------------------------------+ */ - helper_test_hsdir_sync(ns, 0, 0, 1); + helper_test_hsdir_sync(ns, LATE_IN_TP_TO_SRV, LATE_IN_TP_TO_SRV, 1); /* c) Scenario where service is between SRV#N and TP#N, but client is * between TP#N and SRV#N+1. Client is forward in time so it fetches the @@ -1638,7 +1669,7 @@ test_client_service_hsdir_set_sync(void *arg) * | S C | * +------------------------------------------------------------------+ */ - helper_test_hsdir_sync(ns, 1, 0, 1); + helper_test_hsdir_sync(ns, LATE_IN_SRV_TO_TP, EARLY_IN_TP_TO_SRV, 1); /* d) Scenario where service is between TP#N and SRV#N+1, but client is * between SRV#N and TP#N. Client is backwards in time so it fetches the @@ -1654,7 +1685,40 @@ test_client_service_hsdir_set_sync(void *arg) * | C S | * +------------------------------------------------------------------+ */ - helper_test_hsdir_sync(ns, 0, 1, 0); + helper_test_hsdir_sync(ns, EARLY_IN_TP_TO_SRV, LATE_IN_SRV_TO_TP, 0); + + /* e) Scenario where service is between SRV#N and TP#N, but client is + * between TP#N-1 and SRV#3. Client is backwards in time so it fetches + * the first HS desc. + * + * +------------------------------------------------------------------+ + * | | + * | 00:00 12:00 00:00 12:00 00:00 12:00 | + * | SRV#1 TP#1 SRV#2 TP#2 SRV#3 TP#3 | + * | | + * | $==========|-----------$===========|-----------$===========| | + * | ^ ^ | + * | C S | + * +------------------------------------------------------------------+ + */ + helper_test_hsdir_sync(ns, EARLY_IN_SRV_TO_TP, LATE_IN_TP_TO_SRV, 0); + + /* f) Scenario where service is between TP#N and SRV#N+1, but client is + * between SRV#N+1 and TP#N+1. Client is forward in time so it fetches + * the second HS desc. + * + * +------------------------------------------------------------------+ + * | | + * | 00:00 12:00 00:00 12:00 00:00 12:00 | + * | SRV#1 TP#1 SRV#2 TP#2 SRV#3 TP#3 | + * | | + * | $==========|-----------$===========|-----------$===========| | + * | ^ ^ | + * | S C | + * +------------------------------------------------------------------+ + */ + helper_test_hsdir_sync(ns, LATE_IN_TP_TO_SRV, EARLY_IN_SRV_TO_TP, 1); + done: networkstatus_vote_free(ns);

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[tor/master] test: Unit test for the hs indexes
by nickm＠torproject.org 15 Sep '17

15 Sep '17

commit 75ec72f24d039298b3f29d496181c7a99c1c712e Author: David Goulet <dgoulet(a)torproject.org> Date: Tue Aug 29 12:12:52 2017 -0400 test: Unit test for the hs indexes Using a test vector in python, test both hs_build_hsdir_index() and hs_build_hs_index(). This commit also adds the hs_build_address.py to EXTRA_DIST which was missing. Signed-off-by: David Goulet <dgoulet(a)torproject.org> --- src/test/hs_indexes.py | 70 +++++++++++++++++++++++++++++++++++++++++++++++ src/test/include.am | 2 ++ src/test/test_hs_common.c | 48 ++++++++++++++++++++++++++++++++ 3 files changed, 120 insertions(+) diff --git a/src/test/hs_indexes.py b/src/test/hs_indexes.py new file mode 100644 index 000000000..af0b81f8d --- /dev/null +++ b/src/test/hs_indexes.py @@ -0,0 +1,70 @@ +# +# The hidden service subsystem has two type of index. The first type is a +# value that each node in the network gets assigned to using their identity +# key which is their position in the hashring. (hs_build_hsdir_index()). +# +# The second type is a value that both the client and service computes to +# store/fetch the descriptor on the hashring. (hs_build_hs_index()). +# + +import sys +import hashlib +import struct +import base64 + +# Python 3.6+, the SHA3 is available in hashlib natively. Else this requires +# the pysha3 package (pip install pysha3). +if sys.version_info < (3, 6): + import sha3 + # Test vector to make sure the right sha3 version will be used. pysha3 < 1.0 + # used the old Keccak implementation. During the finalization of SHA3, NIST + # changed the delimiter suffix from 0x01 to 0x06. The Keccak sponge function + # stayed the same. pysha3 1.0 provides the previous Keccak hash, too. + TEST_VALUE = "e167f68d6563d75bb25f3aa49c29ef612d41352dc00606de7cbd630bb2665f51" + if TEST_VALUE != sha3.sha3_256(b"Hello World").hexdigest(): + print("pysha3 version is < 1.0. Please install from:") + print("https://github.com/tiran/pysha3https://github.com/tiran/pysha3") + sys.exit(1) + +# The first index we'll build is the position index in the hashring that is +# constructed by the hs_build_hsdir_index() function. Construction is: +# SHA3-256("node-idx" | node_identity | +# shared_random_value | INT_8(period_length) | INT_8(period_num) ) + +PREFIX = "node-idx".encode() +# 32 bytes ed25519 pubkey. +IDENTITY = ("\x42" * 32).encode() +# SRV is 32 bytes. +SRV = ("\x43" * 32).encode() +# Time period length is a 8 bytes value. +PERIOD_LEN = 1440 +# Period number is a 8 bytes value. +PERIOD_NUM = 42 + +data = struct.pack('!8s32s32sQQ', PREFIX, IDENTITY, SRV, PERIOD_NUM, + PERIOD_LEN) +hsdir_index = hashlib.sha3_256(data).hexdigest() + +print("[hs_build_hsdir_index] %s" % (hsdir_index)) + +# The second index we'll build is where the HS stores and the client fetches +# the descriptor on the hashring. It is constructed by the hs_build_hs_index() +# function and the construction is: +# SHA3-256("store-at-idx" | blinded_public_key | +# INT_8(replicanum) | INT_8(period_num) | INT_8(period_length) ) + +PREFIX = "store-at-idx".encode() +# 32 bytes ed25519 pubkey. +PUBKEY = ("\x42" * 32).encode() +# Replica number is a 8 bytes value. +REPLICA_NUM = 1 +# Time period length is a 8 bytes value. +PERIOD_LEN = 1440 +# Period number is a 8 bytes value. +PERIOD_NUM = 42 + +data = struct.pack('!12s32sQQQ', PREFIX, PUBKEY, REPLICA_NUM, PERIOD_LEN, + PERIOD_NUM) +hs_index = hashlib.sha3_256(data).hexdigest() + +print("[hs_build_hs_index] %s" % (hs_index)) diff --git a/src/test/include.am b/src/test/include.am index ced16c0a8..8e8c9ca0d 100644 --- a/src/test/include.am +++ b/src/test/include.am @@ -332,6 +332,8 @@ EXTRA_DIST += \ src/test/bt_test.py \ src/test/ntor_ref.py \ src/test/hs_ntor_ref.py \ + src/test/hs_build_address.py \ + src/test/hs_indexes.py \ src/test/fuzz_static_testcases.sh \ src/test/slownacl_curve25519.py \ src/test/zero_length_keys.sh \ diff --git a/src/test/test_hs_common.c b/src/test/test_hs_common.c index 9959bf14e..ef4c565a8 100644 --- a/src/test/test_hs_common.c +++ b/src/test/test_hs_common.c @@ -1453,6 +1453,51 @@ helper_client_pick_hsdir(const ed25519_public_key_t *onion_identity_pk, ; } +static void +test_hs_indexes(void *arg) +{ + int ret; + uint64_t period_num = 42; + ed25519_public_key_t pubkey; + + (void) arg; + + /* Build the hs_index */ + { + uint8_t hs_index[DIGEST256_LEN]; + const char *b32_test_vector = + "37e5cbbd56a22823714f18f1623ece5983a0d64c78495a8cfab854245e5f9a8a"; + char test_vector[DIGEST256_LEN]; + ret = base16_decode(test_vector, sizeof(test_vector), b32_test_vector, + strlen(b32_test_vector)); + tt_int_op(ret, OP_EQ, sizeof(test_vector)); + /* Our test vector uses a public key set to 32 bytes of \x42. */ + memset(&pubkey, '\x42', sizeof(pubkey)); + hs_build_hs_index(1, &pubkey, period_num, hs_index); + tt_mem_op(hs_index, OP_EQ, test_vector, sizeof(hs_index)); + } + + /* Build the hsdir_index */ + { + uint8_t srv[DIGEST256_LEN]; + uint8_t hsdir_index[DIGEST256_LEN]; + const char *b32_test_vector = + "db475361014a09965e7e5e4d4a25b8f8d4b8f16cb1d8a7e95eed50249cc1a2d5"; + char test_vector[DIGEST256_LEN]; + ret = base16_decode(test_vector, sizeof(test_vector), b32_test_vector, + strlen(b32_test_vector)); + tt_int_op(ret, OP_EQ, sizeof(test_vector)); + /* Our test vector uses a public key set to 32 bytes of \x42. */ + memset(&pubkey, '\x42', sizeof(pubkey)); + memset(srv, '\x43', sizeof(srv)); + hs_build_hsdir_index(&pubkey, srv, period_num, hsdir_index); + tt_mem_op(hsdir_index, OP_EQ, test_vector, sizeof(hsdir_index)); + } + + done: + ; +} + #define EARLY_IN_SRV_TO_TP 0 #define LATE_IN_SRV_TO_TP 1 #define EARLY_IN_TP_TO_SRV 2 @@ -1751,6 +1796,9 @@ struct testcase_t hs_common_tests[] = { NULL, NULL }, { "client_service_hsdir_set_sync", test_client_service_hsdir_set_sync, TT_FORK, NULL, NULL }, + { "hs_indexes", test_hs_indexes, TT_FORK, + NULL, NULL }, + END_OF_TESTCASES };

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[tor/master] test: Add HS v3 client-side test for picking intro points
by nickm＠torproject.org 15 Sep '17

15 Sep '17

commit e9b4624cc589d830d7a78128649f7945ac808737 Author: George Kadianakis <desnacked(a)riseup.net> Date: Tue Aug 29 18:28:11 2017 +0300 test: Add HS v3 client-side test for picking intro points This commit adds a pretty advanced test for the client-side making sure that picking intro is done properly. This unittest also reveals a memleak on the client_pick_intro() function which is fixed by the subsequent commit. Signed-off-by: David Goulet <dgoulet(a)torproject.org> --- src/or/hs_client.c | 4 +- src/or/hs_client.h | 8 ++- src/test/test_hs_client.c | 176 ++++++++++++++++++++++++++++++++++++++++++++++ 3 files changed, 185 insertions(+), 3 deletions(-) diff --git a/src/or/hs_client.c b/src/or/hs_client.c index be5ece068..19359d260 100644 --- a/src/or/hs_client.c +++ b/src/or/hs_client.c @@ -521,7 +521,7 @@ client_rendezvous_circ_has_opened(origin_circuit_t *circ) * to a newly allocated extend_info_t object fully initialized. Return NULL if * we can't convert it for which chances are that we are missing or malformed * link specifiers. */ -static extend_info_t * +STATIC extend_info_t * desc_intro_point_to_extend_info(const hs_desc_intro_point_t *ip) { extend_info_t *ei; @@ -594,7 +594,7 @@ intro_point_is_usable(const ed25519_public_key_t *service_pk, /* Using a descriptor desc, return a newly allocated extend_info_t object of a * randomly picked introduction point from its list. Return NULL if none are * usable. */ -static extend_info_t * +STATIC extend_info_t * client_get_random_intro(const ed25519_public_key_t *service_pk) { extend_info_t *ei = NULL, *ei_excluded = NULL; diff --git a/src/or/hs_client.h b/src/or/hs_client.h index 3ea2b8cdf..d50d34621 100644 --- a/src/or/hs_client.h +++ b/src/or/hs_client.h @@ -71,7 +71,13 @@ void hs_client_free_all(void); STATIC routerstatus_t * pick_hsdir_v3(const ed25519_public_key_t *onion_identity_pk); -#endif +STATIC extend_info_t * +client_get_random_intro(const ed25519_public_key_t *service_pk); + +STATIC extend_info_t * +desc_intro_point_to_extend_info(const hs_desc_intro_point_t *ip); + +#endif /* HS_CLIENT_PRIVATE */ #endif /* TOR_HS_CLIENT_H */ diff --git a/src/test/test_hs_client.c b/src/test/test_hs_client.c index af5f5cb57..125a14e5d 100644 --- a/src/test/test_hs_client.c +++ b/src/test/test_hs_client.c @@ -8,6 +8,7 @@ #define CRYPTO_PRIVATE #define MAIN_PRIVATE +#define HS_CLIENT_PRIVATE #define TOR_CHANNEL_INTERNAL_ #define CIRCUITBUILD_PRIVATE #define CIRCUITLIST_PRIVATE @@ -17,17 +18,22 @@ #include "test_helpers.h" #include "log_test_helpers.h" #include "rend_test_helpers.h" +#include "hs_test_helpers.h" #include "config.h" #include "crypto.h" #include "channeltls.h" +#include "routerset.h" #include "hs_circuit.h" +#include "hs_client.h" #include "hs_ident.h" +#include "hs_cache.h" #include "circuitlist.h" #include "circuitbuild.h" #include "connection.h" #include "connection_edge.h" +#include "networkstatus.h" static int mock_connection_ap_handshake_send_begin(entry_connection_t *ap_conn) @@ -36,6 +42,15 @@ mock_connection_ap_handshake_send_begin(entry_connection_t *ap_conn) return 0; } +static networkstatus_t mock_ns; + +static networkstatus_t * +mock_networkstatus_get_live_consensus(time_t now) +{ + (void) now; + return &mock_ns; +} + /* Test helper function: Setup a circuit and a stream with the same hidden * service destination, and put them in circ_out and * conn_out. Make the stream wait for circuits to be established to the @@ -276,11 +291,172 @@ test_e2e_rend_circuit_setup(void *arg) circuit_free(TO_CIRCUIT(or_circ)); } +/** Test client logic for picking intro points from a descriptor. Also test how + * ExcludeNodes and intro point failures affect picking intro points. */ +static void +test_client_pick_intro(void *arg) +{ + int ret; + ed25519_keypair_t service_kp; + hs_descriptor_t *desc = NULL; + + MOCK(networkstatus_get_live_consensus, + mock_networkstatus_get_live_consensus); + + (void) arg; + + hs_init(); + + /* Generate service keypair */ + tt_int_op(0, OP_EQ, ed25519_keypair_generate(&service_kp, 0)); + + /* Set time */ + ret = parse_rfc1123_time("Sat, 26 Oct 1985 13:00:00 UTC", + &mock_ns.valid_after); + tt_int_op(ret, OP_EQ, 0); + ret = parse_rfc1123_time("Sat, 26 Oct 1985 14:00:00 UTC", + &mock_ns.fresh_until); + tt_int_op(ret, OP_EQ, 0); + + update_approx_time(mock_ns.fresh_until-10); + time_t now = approx_time(); + + /* Test logic: + * + * 1) Add our desc with intro points to the HS cache. + * + * 2) Mark all descriptor intro points except _the chosen one_ as + * failed. Then query the desc to get a random intro: check that we got + * _the chosen one_. Then fail the chosen one as well, and see that no + * intros are returned. + * + * 3) Then clean the intro state cache and get an intro point. + * + * 4) Try fetching an intro with the wrong service key: shouldn't work + * + * 5) Set StrictNodes and put all our intro points in ExcludeNodes: see that + * nothing is returned. + */ + + /* 1) Add desc to HS cache */ + { + char *encoded = NULL; + desc = hs_helper_build_hs_desc_with_ip(&service_kp); + ret = hs_desc_encode_descriptor(desc, &service_kp, &encoded); + tt_int_op(ret, OP_EQ, 0); + tt_assert(encoded); + + /* store it */ + hs_cache_store_as_client(encoded, &service_kp.pubkey); + + /* fetch it to make sure it works */ + const hs_descriptor_t *fetched_desc = + hs_cache_lookup_as_client(&service_kp.pubkey); + tt_assert(fetched_desc); + tt_mem_op(fetched_desc->subcredential, OP_EQ, desc->subcredential, + DIGEST256_LEN); + tt_assert(!tor_mem_is_zero((char*)fetched_desc->subcredential, + DIGEST256_LEN)); + tor_free(encoded); + } + + /* 2) Mark all intro points except _the chosen one_ as failed. Then query the + * desc and get a random intro: check that we got _the chosen one_. */ + { + /* Pick the chosen intro point and get its ei */ + hs_desc_intro_point_t *chosen_intro_point = + smartlist_get(desc->encrypted_data.intro_points, 0); + extend_info_t *chosen_intro_ei = + desc_intro_point_to_extend_info(chosen_intro_point); + tt_assert(chosen_intro_point); + tt_assert(chosen_intro_ei); + + /* Now mark all other intro points as failed */ + SMARTLIST_FOREACH_BEGIN(desc->encrypted_data.intro_points, + hs_desc_intro_point_t *, ip) { + /* Skip the chosen intro point */ + if (ip == chosen_intro_point) { + continue; + } + ed25519_public_key_t *intro_auth_key = &ip->auth_key_cert->signed_key; + hs_cache_client_intro_state_note(&service_kp.pubkey, + intro_auth_key, + INTRO_POINT_FAILURE_GENERIC); + } SMARTLIST_FOREACH_END(ip); + + /* Try to get a random intro: Should return the chosen one! */ + extend_info_t *ip = client_get_random_intro(&service_kp.pubkey); + tor_assert(ip); + tt_assert(!tor_mem_is_zero((char*)ip->identity_digest, DIGEST_LEN)); + tt_mem_op(ip->identity_digest, OP_EQ, chosen_intro_ei->identity_digest, + DIGEST_LEN); + + extend_info_free(chosen_intro_ei); + extend_info_free(ip); + + /* Now also mark the chosen one as failed: See that we can't get any intro + points anymore. */ + hs_cache_client_intro_state_note(&service_kp.pubkey, + &chosen_intro_point->auth_key_cert->signed_key, + INTRO_POINT_FAILURE_TIMEOUT); + ip = client_get_random_intro(&service_kp.pubkey); + tor_assert(!ip); + } + + /* 3) Clean the intro state cache and get an intro point */ + { + /* Pretend we are 5 mins in the future and order a cleanup of the intro + * state. This should clean up the intro point failures and allow us to get + * an intro. */ + hs_cache_client_intro_state_clean(now + 5*60); + + /* Get an intro. It should work! */ + extend_info_t *ip = client_get_random_intro(&service_kp.pubkey); + tor_assert(ip); + extend_info_free(ip); + } + + /* 4) Try fetching an intro with the wrong service key: shouldn't work */ + { + ed25519_keypair_t dummy_kp; + tt_int_op(0, OP_EQ, ed25519_keypair_generate(&dummy_kp, 0)); + extend_info_t *ip = client_get_random_intro(&dummy_kp.pubkey); + tor_assert(!ip); + } + + /* 5) Set StrictNodes and put all our intro points in ExcludeNodes: see that + * nothing is returned. */ + { + get_options_mutable()->ExcludeNodes = routerset_new(); + get_options_mutable()->StrictNodes = 1; + SMARTLIST_FOREACH_BEGIN(desc->encrypted_data.intro_points, + hs_desc_intro_point_t *, ip) { + extend_info_t *intro_ei = desc_intro_point_to_extend_info(ip); + if (intro_ei) { + char *ip_addr = tor_addr_to_str_dup(&intro_ei->addr); + tor_assert(ip_addr); + ret =routerset_parse(get_options_mutable()->ExcludeNodes, ip_addr, ""); + tt_int_op(ret, OP_EQ, 0); + tor_free(ip_addr); + extend_info_free(intro_ei); + } + } SMARTLIST_FOREACH_END(ip); + + extend_info_t *ip = client_get_random_intro(&service_kp.pubkey); + tt_assert(!ip); + } + + done: + hs_descriptor_free(desc); +} + struct testcase_t hs_client_tests[] = { { "e2e_rend_circuit_setup_legacy", test_e2e_rend_circuit_setup_legacy, TT_FORK, NULL, NULL }, { "e2e_rend_circuit_setup", test_e2e_rend_circuit_setup, TT_FORK, NULL, NULL }, + { "client_pick_intro", test_client_pick_intro, + TT_FORK, NULL, NULL }, END_OF_TESTCASES };

1 0

[tor/master] test: Improve HS v3 helper for building intro points.
by nickm＠torproject.org 15 Sep '17

15 Sep '17

commit 29aa400908ff89c72fd9fbd723793058d73ce35f Author: George Kadianakis <desnacked(a)riseup.net> Date: Tue Aug 29 18:37:31 2017 +0300 test: Improve HS v3 helper for building intro points. Valid intro points need both legacy key and ipv4. Signed-off-by: David Goulet <dgoulet(a)torproject.org> --- src/test/hs_test_helpers.c | 31 ++++++++++++++++--------------- 1 file changed, 16 insertions(+), 15 deletions(-) diff --git a/src/test/hs_test_helpers.c b/src/test/hs_test_helpers.c index cab73196b..935597126 100644 --- a/src/test/hs_test_helpers.c +++ b/src/test/hs_test_helpers.c @@ -18,28 +18,29 @@ hs_helper_build_intro_point(const ed25519_keypair_t *signing_kp, time_t now, hs_desc_intro_point_t *intro_point = NULL; hs_desc_intro_point_t *ip = hs_desc_intro_point_new(); + /* For a usable intro point we need at least two link specifiers: One legacy + * keyid and one ipv4 */ { - hs_desc_link_specifier_t *ls = tor_malloc_zero(sizeof(*ls)); - if (legacy) { - ls->type = LS_LEGACY_ID; - memcpy(ls->u.legacy_id, "0299F268FCA9D55CD157976D39AE92B4B455B3A8", - DIGEST_LEN); - } else { - ls->u.ap.port = 9001; - int family = tor_addr_parse(&ls->u.ap.addr, addr); - switch (family) { - case AF_INET: - ls->type = LS_IPV4; + hs_desc_link_specifier_t *ls_legacy = tor_malloc_zero(sizeof(*ls_legacy)); + hs_desc_link_specifier_t *ls_v4 = tor_malloc_zero(sizeof(*ls_v4)); + ls_legacy->type = LS_LEGACY_ID; + memcpy(ls_legacy->u.legacy_id, "0299F268FCA9D55CD157976D39AE92B4B455B3A8", + DIGEST_LEN); + ls_v4->u.ap.port = 9001; + int family = tor_addr_parse(&ls_v4->u.ap.addr, addr); + switch (family) { + case AF_INET: + ls_v4->type = LS_IPV4; break; case AF_INET6: - ls->type = LS_IPV6; + ls_v4->type = LS_IPV6; break; default: /* Stop the test, not suppose to have an error. */ tt_int_op(family, OP_EQ, AF_INET); - } } - smartlist_add(ip->link_specifiers, ls); + smartlist_add(ip->link_specifiers, ls_legacy); + smartlist_add(ip->link_specifiers, ls_v4); } ret = ed25519_keypair_generate(&auth_kp, 0); @@ -137,7 +138,7 @@ hs_helper_build_hs_desc_impl(unsigned int no_ip, smartlist_add(desc->encrypted_data.intro_points, hs_helper_build_intro_point(signing_kp, now, "3.2.1.4", 1)); smartlist_add(desc->encrypted_data.intro_points, - hs_helper_build_intro_point(signing_kp, now, "", 1)); + hs_helper_build_intro_point(signing_kp, now, "5.6.7.8", 1)); } descp = desc;

1 0

[tor/master] fixup! test: Add HS v3 client-side test for picking intro points
by nickm＠torproject.org 15 Sep '17

15 Sep '17

commit 44ee5037eacd2e39b0df7515b2ca0996c3372827 Author: David Goulet <dgoulet(a)torproject.org> Date: Fri Sep 15 08:34:30 2017 -0400 fixup! test: Add HS v3 client-side test for picking intro points Signed-off-by: David Goulet <dgoulet(a)torproject.org> --- src/test/test_hs_client.c | 12 ++++++++---- 1 file changed, 8 insertions(+), 4 deletions(-) diff --git a/src/test/test_hs_client.c b/src/test/test_hs_client.c index 125a14e5d..16b2d604f 100644 --- a/src/test/test_hs_client.c +++ b/src/test/test_hs_client.c @@ -433,11 +433,15 @@ test_client_pick_intro(void *arg) hs_desc_intro_point_t *, ip) { extend_info_t *intro_ei = desc_intro_point_to_extend_info(ip); if (intro_ei) { - char *ip_addr = tor_addr_to_str_dup(&intro_ei->addr); - tor_assert(ip_addr); - ret =routerset_parse(get_options_mutable()->ExcludeNodes, ip_addr, ""); + const char *ptr; + char ip_addr[TOR_ADDR_BUF_LEN]; + /* We need to decorate in case it is an IPv6 else routerset_parse() + * doesn't like it. */ + ptr = tor_addr_to_str(ip_addr, &intro_ei->addr, sizeof(ip_addr), 1); + tt_assert(ptr == ip_addr); + ret = routerset_parse(get_options_mutable()->ExcludeNodes, + ip_addr, ""); tt_int_op(ret, OP_EQ, 0); - tor_free(ip_addr); extend_info_free(intro_ei); } } SMARTLIST_FOREACH_END(ip);

1 0

[tor/master] prop224: Fix memleak in client_get_random_intro().
by nickm＠torproject.org 15 Sep '17

15 Sep '17

commit 5cc80692b8397d8b87fd69d0f0165a6156534f0b Author: George Kadianakis <desnacked(a)riseup.net> Date: Tue Aug 29 18:29:05 2017 +0300 prop224: Fix memleak in client_get_random_intro(). The memleak was occuring because of the way ExcludeNodes is handled in that function. Basically, we were putting excluded intro points extend infos in a special variable which was never freed. Also, if there were multiple excluded intro points then that variable was overwritten everytime leaking more memory. This commit should fix both issues. --- src/or/hs_client.c | 7 +++++++ 1 file changed, 7 insertions(+) diff --git a/src/or/hs_client.c b/src/or/hs_client.c index 19359d260..77fbf548e 100644 --- a/src/or/hs_client.c +++ b/src/or/hs_client.c @@ -646,6 +646,12 @@ client_get_random_intro(const ed25519_public_key_t *service_pk) /* If this pick is in the ExcludeNodes list, we keep its reference so if * we ever end up not being able to pick anything else and StrictNodes is * unset, we'll use it. */ + if (ei_excluded) { + /* If something was already here free it. After the loop is gone we + * will examine the last excluded intro point, and that's fine since + * that's random anyway */ + extend_info_free(ei_excluded); + } ei_excluded = ei; continue; } @@ -662,6 +668,7 @@ client_get_random_intro(const ed25519_public_key_t *service_pk) if (options->StrictNodes) { log_warn(LD_REND, "Every introduction points are in the ExcludeNodes set " "and StrictNodes is set. We can't connect."); + extend_info_free(ei); ei = NULL; }

1 0

[tor/master] test: Make check-spaces happy
by nickm＠torproject.org 15 Sep '17

15 Sep '17

commit 21564c93cea87ac01087b5139a37e68a27871ab1 Author: David Goulet <dgoulet(a)torproject.org> Date: Fri Sep 15 08:34:56 2017 -0400 test: Make check-spaces happy Signed-off-by: David Goulet <dgoulet(a)torproject.org> --- src/test/test_hs_common.c | 2 -- 1 file changed, 2 deletions(-) diff --git a/src/test/test_hs_common.c b/src/test/test_hs_common.c index ef4c565a8..2d63dff25 100644 --- a/src/test/test_hs_common.c +++ b/src/test/test_hs_common.c @@ -1614,7 +1614,6 @@ helper_test_hsdir_sync(networkstatus_t *ns, * exhausted all of them: */ tt_assert(!pick_hsdir_v3(&service->keys.identity_pk)); - done: /* At the end: free all services and initialize the subsystem again, we will * need it for next scenario. */ @@ -1764,7 +1763,6 @@ test_client_service_hsdir_set_sync(void *arg) */ helper_test_hsdir_sync(ns, LATE_IN_TP_TO_SRV, EARLY_IN_SRV_TO_TP, 1); - done: networkstatus_vote_free(ns); nodelist_free_all();

1 0

[tor/master] Merge remote-tracking branch 'dgoulet/ticket23310_032_02'
by nickm＠torproject.org 15 Sep '17

15 Sep '17

commit a213a32b7cc2ca0701953953a812662c2f0533d3 Merge: 7facfc728 21564c93c Author: Nick Mathewson <nickm(a)torproject.org> Date: Fri Sep 15 09:01:22 2017 -0400 Merge remote-tracking branch 'dgoulet/ticket23310_032_02' src/or/hs_client.c | 11 ++- src/or/hs_client.h | 8 +- src/test/hs_indexes.py | 70 ++++++++++++++++++ src/test/hs_test_helpers.c | 31 ++++---- src/test/include.am | 2 + src/test/test_hs_client.c | 180 +++++++++++++++++++++++++++++++++++++++++++++ src/test/test_hs_common.c | 166 ++++++++++++++++++++++++++++++++++------- 7 files changed, 422 insertions(+), 46 deletions(-)

1 0

[tor/master] repair test_key_expiration.sh
by nickm＠torproject.org 15 Sep '17

15 Sep '17

commit 2c9f8badbdb75d09cac6f84da5101e6007bd4fa5 Author: Nick Mathewson <nickm(a)torproject.org> Date: Fri Sep 15 09:04:22 2017 -0400 repair test_key_expiration.sh --- src/test/test_key_expiration.sh | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/src/test/test_key_expiration.sh b/src/test/test_key_expiration.sh index 95d7911f0..5511dbf18 100755 --- a/src/test/test_key_expiration.sh +++ b/src/test/test_key_expiration.sh @@ -90,7 +90,7 @@ if [ "$CASE1" = 1 ]; then echo "==== Case 1: Test --key-expiration without argument and ensure usage" echo " instructions are printed." - ${TOR} ${QUIETLY} --key-expiration 2>"$FN" + ${TOR} ${QUIETLY} --key-expiration 2>"$FN" || true grep "No valid argument to --key-expiration found!" "$FN" >/dev/null || \ die "Tor didn't mention supported --key-expiration argmuents"

1 0

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