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protovers: during voting, assert that we are not voting to shut down.

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As a failsafe, we should make sure that no authority ever votes for
a set of protocol versions that it does not itself support.
This commit is contained in:
Nick Mathewson
2016-09-22 10:25:02 -04:00
parent 1ab641a70e
commit 501fc3bbc6
1 changed files with 10 additions and 0 deletions
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src/or/dirserv.c
+10
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@@ -2934,6 +2934,16 @@ dirserv_generate_networkstatus_vote_obj(crypto_pk_t *private_key,
tor_strdup("Cons=1 Desc=1 DirCache=1 HSDir=1 HSIntro=3 HSRend=1 "
"Link=3-4 LinkAuth=1 Microdesc=1 Relay=1-2");
/* We are not allowed to vote to require anything we don't have. */
tor_assert(protover_all_supported(v3_out->required_relay_protocols, NULL));
tor_assert(protover_all_supported(v3_out->required_client_protocols, NULL));
/* We should not recommend anything we don't have. */
tor_assert_nonfatal(protover_all_supported(
v3_out->recommended_relay_protocols, NULL));
tor_assert_nonfatal(protover_all_supported(
v3_out->recommended_client_protocols, NULL));
v3_out->package_lines = smartlist_new();
{
config_line_t *cl;