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Merge pull request #4406
7964d4f8
wallet2: handle corner case in picking fake outputs (moneromooo-monero)
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1 changed files with 27 additions and 3 deletions
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@ -6723,11 +6723,23 @@ void wallet2::get_outs(std::vector<std::vector<tools::wallet2::get_outs_entry>>
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}
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// while we still need more mixins
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uint64_t num_usable_outs = num_outs;
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bool allow_blackballed = false;
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while (num_found < requested_outputs_count)
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{
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// if we've gone through every possible output, we've gotten all we can
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if (seen_indices.size() == num_outs)
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break;
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if (seen_indices.size() == num_usable_outs)
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{
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// there is a first pass which rejects blackballed outputs, then a second pass
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// which allows them if we don't have enough non blackballed outputs to reach
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// the required amount of outputs (since consensus does not care about blackballed
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// outputs, we still need to reach the minimum ring size)
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if (allow_blackballed)
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break;
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MINFO("Not enough non blackballed outputs, we'll allow blackballed ones");
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allow_blackballed = true;
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num_usable_outs = num_outs;
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}
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// get a random output index from the DB. If we've already seen it,
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// return to the top of the loop and try again, otherwise add it to the
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@ -6801,14 +6813,26 @@ void wallet2::get_outs(std::vector<std::vector<tools::wallet2::get_outs_entry>>
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if (seen_indices.count(i))
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continue;
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if (is_output_blackballed(std::make_pair(amount, i))) // don't add blackballed outputs
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if (!allow_blackballed && is_output_blackballed(std::make_pair(amount, i))) // don't add blackballed outputs
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{
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--num_usable_outs;
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continue;
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}
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seen_indices.emplace(i);
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LOG_PRINT_L2("picking " << i << " as " << type);
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req.outputs.push_back({amount, i});
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++num_found;
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}
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// if we had enough unusable outputs, we might fall off here and still
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// have too few outputs, so we stuff with one to keep counts good, and
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// we'll error out later
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while (num_found < requested_outputs_count)
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{
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req.outputs.push_back({amount, 0});
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++num_found;
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}
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}
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// sort the subsection, to ensure the daemon doesn't know which output is ours
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