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Generalize the number of epochs old a peg-in can be and still be valid

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This commit is contained in:
Gregory Sanders 2019-08-19 15:21:30 -04:00
parent b105ff45e5
commit f7905d6dfb
5 changed files with 22 additions and 16 deletions
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28
src/pegins.cpp
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@ -476,27 +476,23 @@ std::vector<std::pair<CScript, CScript>> GetValidFedpegScripts(const CBlockIndex
fedpegscripts.push_back(std::make_pair(next_param.m_fedpeg_program, next_param.m_fedpegscript));
}
// Next we walk backwards up to two epoch start blocks
const CBlockIndex* p_current_epoch_start = pblockindex->GetAncestor(epoch_start_height);
const CBlockIndex* p_prev_epoch_start = pblockindex->GetAncestor(epoch_start_height-epoch_length);
// Next we walk backwards up to M epoch starts
for (size_t i = 0; i < params.total_valid_epochs; i++) {
if (p_current_epoch_start) {
if (!p_current_epoch_start->dynafed_params.IsNull()) {
fedpegscripts.push_back(std::make_pair(p_current_epoch_start->dynafed_params.m_current.m_fedpeg_program, p_current_epoch_start->dynafed_params.m_current.m_fedpegscript));
const CBlockIndex* p_epoch_start = pblockindex->GetAncestor(epoch_start_height-i*epoch_length);
// We're done here, for whatever reason.
if (!p_epoch_start) {
break;
}
if (!p_epoch_start->dynafed_params.IsNull()) {
fedpegscripts.push_back(std::make_pair(p_epoch_start->dynafed_params.m_current.m_fedpeg_program, p_epoch_start->dynafed_params.m_current.m_fedpegscript));
} else {
fedpegscripts.push_back(std::make_pair(GetScriptForDestination(ScriptHash(GetScriptForDestination(WitnessV0ScriptHash(params.fedpegScript)))), params.fedpegScript));
}
}
if (p_prev_epoch_start) {
if (!p_prev_epoch_start->dynafed_params.IsNull()) {
fedpegscripts.push_back(std::make_pair(p_prev_epoch_start->dynafed_params.m_current.m_fedpeg_program, p_prev_epoch_start->dynafed_params.m_current.m_fedpegscript));
} else {
fedpegscripts.push_back(std::make_pair(GetScriptForDestination(ScriptHash(GetScriptForDestination(WitnessV0ScriptHash(params.fedpegScript)))), params.fedpegScript));
}
}
// Only return up to the latest two of three possible fedpegscripts, which are enforced
fedpegscripts.resize(std::min((int)fedpegscripts.size(), 2));
fedpegscripts.resize(std::min(fedpegscripts.size(), params.total_valid_epochs));
return fedpegscripts;
}