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Adjust unit tests to account for fix to bug 22753.

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Our mock network put all the guards on the same IPv4 address, which
doesn't fly when we start applying EnforceDistinctSubnets.  So in
this commit, I disable EnforceDistinctSubnets when running the old
guard_restriction_t test.

This commit also adds a regression test for #22753.
This commit is contained in:
Nick Mathewson 2017-06-29 10:09:06 -04:00
parent 665baf5ed5
commit 88666d0482
1 changed files with 17 additions and 2 deletions
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19
src/test/test_entrynodes.c
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@ -121,6 +121,8 @@ big_fake_network_setup(const struct testcase_t *testcase)
n->is_running = n->is_valid = n->is_fast = n->is_stable = 1;
/* Note: all these guards have the same address, so you'll need to
* disable EnforceDistinctSubnets when a restriction is applied. */
n->rs->addr = 0x04020202;
n->rs->or_port = 1234;
n->rs->is_v2_dir = 1;
@ -1846,14 +1848,17 @@ test_entry_guard_select_for_circuit_confirmed(void *arg)
tt_uint_op(state, OP_EQ, GUARD_CIRC_STATE_USABLE_IF_NO_BETTER_GUARD);
tt_i64_op(g2->last_tried_to_connect, OP_EQ, approx_time());
// If we say that the next confirmed guard in order is excluded, we get
// The one AFTER that.
// If we say that the next confirmed guard in order is excluded, and
// we disable EnforceDistinctSubnets, we get the guard AFTER the
// one we excluded.
get_options_mutable()->EnforceDistinctSubnets = 0;
g = smartlist_get(gs->confirmed_entry_guards,
smartlist_len(gs->primary_entry_guards)+2);
entry_guard_restriction_t rst;
memset(&rst, 0, sizeof(rst));
memcpy(rst.exclude_id, g->identity, DIGEST_LEN);
g2 = select_entry_guard_for_circuit(gs, GUARD_USAGE_TRAFFIC, &rst, &state);
tt_ptr_op(g2, OP_NE, NULL);
tt_ptr_op(g2, OP_NE, g);
tt_int_op(g2->confirmed_idx, OP_EQ,
smartlist_len(gs->primary_entry_guards)+3);
@ -1873,6 +1878,16 @@ test_entry_guard_select_for_circuit_confirmed(void *arg)
tt_assert(g->is_pending);
tt_int_op(g->confirmed_idx, OP_EQ, -1);
// If we EnforceDistinctSubnets and apply a restriction, we get
// nothing, since we put all of the nodes in the same /16.
// Regression test for bug 22753/TROVE-2017-006.
get_options_mutable()->EnforceDistinctSubnets = 1;
g = smartlist_get(gs->confirmed_entry_guards, 0);
memset(&rst, 0, sizeof(rst));
memcpy(rst.exclude_id, g->identity, DIGEST_LEN);
g2 = select_entry_guard_for_circuit(gs, GUARD_USAGE_TRAFFIC, &rst, &state);
tt_ptr_op(g2, OP_EQ, NULL);
done:
guard_selection_free(gs);
}