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Merge remote-tracking branch 'asn/feature19036'
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commit
437cbb17c2
4
changes/feature19036
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4
changes/feature19036
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@ -0,0 +1,4 @@
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o Minor features:
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- Make directory authorities write the v3-status-votes file out
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to disk earlier in the consensus process, so we have the votes
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even if we abort the consensus process below. Resolves ticket 19036.
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@ -3021,6 +3021,30 @@ dirvote_add_vote(const char *vote_body, const char **msg_out, int *status_out)
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return any_failed ? NULL : pending_vote;
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}
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/* Write the votes in <b>pending_vote_list</b> to disk. */
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static void
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write_v3_votes_to_disk(const smartlist_t *pending_vote_list)
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{
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smartlist_t *votestrings = smartlist_new();
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char *votefile = NULL;
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SMARTLIST_FOREACH(pending_vote_list, pending_vote_t *, v,
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{
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sized_chunk_t *c = tor_malloc(sizeof(sized_chunk_t));
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c->bytes = v->vote_body->dir;
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c->len = v->vote_body->dir_len;
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smartlist_add(votestrings, c); /* collect strings to write to disk */
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});
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votefile = get_datadir_fname("v3-status-votes");
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write_chunks_to_file(votefile, votestrings, 0, 0);
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log_debug(LD_DIR, "Wrote votes to disk (%s)!", votefile);
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tor_free(votefile);
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SMARTLIST_FOREACH(votestrings, sized_chunk_t *, c, tor_free(c));
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smartlist_free(votestrings);
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}
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/** Try to compute a v3 networkstatus consensus from the currently pending
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* votes. Return 0 on success, -1 on failure. Store the consensus in
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* pending_consensus: it won't be ready to be published until we have
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@ -3030,8 +3054,8 @@ dirvote_compute_consensuses(void)
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{
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/* Have we got enough votes to try? */
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int n_votes, n_voters, n_vote_running = 0;
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smartlist_t *votes = NULL, *votestrings = NULL;
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char *consensus_body = NULL, *signatures = NULL, *votefile;
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smartlist_t *votes = NULL;
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char *consensus_body = NULL, *signatures = NULL;
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networkstatus_t *consensus = NULL;
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authority_cert_t *my_cert;
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pending_consensus_t pending[N_CONSENSUS_FLAVORS];
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@ -3042,6 +3066,17 @@ dirvote_compute_consensuses(void)
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if (!pending_vote_list)
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pending_vote_list = smartlist_new();
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/* Write votes to disk */
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write_v3_votes_to_disk(pending_vote_list);
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/* Setup votes smartlist */
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votes = smartlist_new();
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SMARTLIST_FOREACH(pending_vote_list, pending_vote_t *, v,
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{
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smartlist_add(votes, v->vote); /* collect votes to compute consensus */
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});
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/* See if consensus managed to achieve majority */
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n_voters = get_n_authorities(V3_DIRINFO);
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n_votes = smartlist_len(pending_vote_list);
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if (n_votes <= n_voters/2) {
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@ -3068,24 +3103,6 @@ dirvote_compute_consensuses(void)
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goto err;
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}
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votes = smartlist_new();
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votestrings = smartlist_new();
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SMARTLIST_FOREACH(pending_vote_list, pending_vote_t *, v,
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{
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sized_chunk_t *c = tor_malloc(sizeof(sized_chunk_t));
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c->bytes = v->vote_body->dir;
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c->len = v->vote_body->dir_len;
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smartlist_add(votestrings, c); /* collect strings to write to disk */
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smartlist_add(votes, v->vote); /* collect votes to compute consensus */
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});
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votefile = get_datadir_fname("v3-status-votes");
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write_chunks_to_file(votefile, votestrings, 0, 0);
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tor_free(votefile);
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SMARTLIST_FOREACH(votestrings, sized_chunk_t *, c, tor_free(c));
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smartlist_free(votestrings);
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{
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char legacy_dbuf[DIGEST_LEN];
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crypto_pk_t *legacy_sign=NULL;
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