#23588: Write fascist_firewall_choose_address_ls() and use it in
hs_get_extend_info_from_lspecs()
-------------------------------------------------+-------------------------
 Reporter:  teor                                 |          Owner:  neel
     Type:  defect                               |         Status:
                                                 |  needs_revision
 Priority:  Medium                               |      Milestone:  Tor:
                                                 |  0.3.5.x-final
Component:  Core Tor/Tor                         |        Version:
 Severity:  Normal                               |     Resolution:
 Keywords:  prop224, tor-hs, single-onion,       |  Actual Points:
  ipv6, 034-triage-20180328,                     |
  034-removed-20180328                           |
Parent ID:  #23493                               |         Points:  1
 Reviewer:  teor                                 |        Sponsor:
-------------------------------------------------+-------------------------

Comment (by teor):

 I ran make test-network-all on this branch, using the latest chutney
 master. I am seeing come code pass, but some failures from this branch. I
 also saw some HS failures (#24610) and bridge failures (#27080).

 So I am not sure if the code in https://github.com/torproject/tor/pull/256
 works. It also doesn't have any unit tests. (All the other
 fascist_firewall_choose_address*() functions have unit tests.)

 We need to be careful about our address parsing code, because it is a
 source of security and anonymity issues.

 I don't think we can merge this branch until the bugs are fixed:

 {{{
 $ make test-network-all
 mkdir -p ./test_network_log
 ping6 ::1 or ping ::1 succeeded, running IPv6 flavors: bridges+ipv6-min
 ipv6-exit-min hs-v23-ipv6-md single-onion-ipv6-md.
 tor-stable found, running mixed flavors: mixed+hs-v23.
 PASS: basic-min
 FAIL: bridges-min
 PASS: hs-v2-min
 PASS: hs-v3-min
 PASS: single-onion-v23
 FAIL: bridges+ipv6-min
 FAIL: ipv6-exit-min
 FAIL: hs-v23-ipv6-md
 Detail: chutney/tools/warnings.sh /Users/base/chutney/net/nodes.1533778119
 Warning: Bug:     0   tor
 0x0000000100c53a2c log_backtrace_impl + 76 (on Tor 0.3.5.0-alpha-dev
 dc06393aac4a459c) Number: 1
 Warning: Bug:     1   tor
 0x0000000100c44177 tor_bug_occurred_ + 503 (on Tor 0.3.5.0-alpha-dev
 dc06393aac4a459c) Number: 1
 Warning: Bug:     10  tor
 0x00000001006e2c57 do_main_loop + 2423 (on Tor 0.3.5.0-alpha-dev
 dc06393aac4a459c) Number: 1
 Warning: Bug:     11  tor
 0x00000001006e763b tor_run_main + 779 (on Tor 0.3.5.0-alpha-dev
 dc06393aac4a459c) Number: 1
 Warning: Bug:     12  tor
 0x0000000100848451 tor_main + 161 (on Tor 0.3.5.0-alpha-dev
 dc06393aac4a459c) Number: 1
 Warning: Bug:     13  tor
 0x00000001006433db main + 27 (on Tor 0.3.5.0-alpha-dev dc06393aac4a459c)
 Number: 1
 Warning: Bug:     14  libdyld.dylib
 0x00007fff54fbe015 start + 1 (on Tor 0.3.5.0-alpha-dev dc06393aac4a459c)
 Number: 1
 Warning: Bug:     2   tor
 0x0000000100965f1e hs_client_dir_info_changed + 206 (on Tor 0.3.5.0-alpha-
 dev dc06393aac4a459c) Number: 1
 Warning: Bug:     3   tor
 0x00000001009b9b9c networkstatus_set_current_consensus + 9740 (on Tor
 0.3.5.0-alpha-dev dc06393aac4a459c) Number: 1
 Warning: Bug:     4   tor
 0x00000001008fcdc1 connection_dir_client_reached_eof + 20913 (on Tor
 0.3.5.0-alpha-dev dc06393aac4a459c) Number: 1
 Warning: Bug:     5   tor
 0x00000001008f79cf connection_dir_reached_eof + 143 (on Tor 0.3.5.0-alpha-
 dev dc06393aac4a459c) Number: 1
 Warning: Bug:     6   tor
 0x00000001006c4114 connection_handle_read + 11668 (on Tor 0.3.5.0-alpha-
 dev dc06393aac4a459c) Number: 1
 Warning: Bug:     7   tor
 0x00000001006d9978 conn_read_callback + 88 (on Tor 0.3.5.0-alpha-dev
 dc06393aac4a459c) Number: 1
 Warning: Bug:     8   libevent-2.1.6.dylib
 0x00000001016269c2 event_process_active_single_queue + 1057 (on Tor
 0.3.5.0-alpha-dev dc06393aac4a459c) Number: 1
 Warning: Bug:     9   libevent-2.1.6.dylib
 0x0000000101623cb3 event_base_loop + 1074 (on Tor 0.3.5.0-alpha-dev
 dc06393aac4a459c) Number: 1
 Warning: Bug: Non-fatal assertion !(status == HS_CLIENT_FETCH_HAVE_DESC)
 failed in retry_all_socks_conn_waiting_for_desc at
 ../src/feature/hs/hs_client.c:275. Stack trace: (on Tor 0.3.5.0-alpha-dev
 dc06393aac4a459c) Number: 1
 Warning: Every introduction point for service
 p2qpw3p725i6dspcw5yxy7zltrqulp4dnspfza3quiasro3rgx2yabid is unusable or we
 can't extend to it. We can't connect. Number: 8
 Warning: Not enough info to open a circuit to a rendezvous point for
 hidden service p2qpw3p725i6dspcw5yxy7zltrqulp4dnspfza3quiasro3rgx2yabid.
 Number: 1
 Warning: tor_bug_occurred_: Bug: ../src/feature/hs/hs_client.c:275:
 retry_all_socks_conn_waiting_for_desc: Non-fatal assertion !(status ==
 HS_CLIENT_FETCH_HAVE_DESC) failed. (on Tor 0.3.5.0-alpha-dev
 dc06393aac4a459c) Number: 1
 PASS: single-onion-ipv6-md
 PASS: mixed+hs-v23
 Detail: chutney/tools/warnings.sh /Users/base/chutney/net/nodes.1533778259
 Warning: Unable to add signatures to consensus: Mismatched digest. Number:
 20
 Log and result files are available in ./test_network_log.
 }}}

--
Ticket URL: <https://trac.torproject.org/projects/tor/ticket/23588#comment:28>
Tor Bug Tracker & Wiki <https://trac.torproject.org/>
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