Function GetValidFedpegScripts

src/pegins.cpp:461–505

}

std::vector<std::pair<CScript, CScript>> GetValidFedpegScripts(const CBlockIndex* pblockindex, const Consensus::Params& params, bool nextblock_validation)
{
    assert(pblockindex);

    std::vector<std::pair<CScript, CScript>> fedpegscripts;

    const int32_t epoch_length = (int32_t) params.dynamic_epoch_length;
    const int32_t epoch_age = pblockindex->nHeight % epoch_length;
    const int32_t epoch_start_height = pblockindex->nHeight - epoch_age;

    // In mempool and general "enforced next block" RPC we need to look ahead one block
    // to see if we're on a boundary. If so, put that epoch's fedpegscript in place
    if (nextblock_validation && epoch_age == epoch_length - 1) {
        DynaFedParamEntry next_param = ComputeNextBlockFullCurrentParameters(pblockindex, params);
        fedpegscripts.push_back(std::make_pair(next_param.m_fedpeg_program, next_param.m_fedpegscript));
    }

    // Next we walk backwards up to M epoch starts
    for (int32_t i = 0; i < (int32_t) params.total_valid_epochs; i++) {
        // We are within total_valid_epochs of the genesis
        if (i * epoch_length > epoch_start_height) {
            break;
        }

        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 (node::fTrimHeaders) {
            LOCK(cs_main);
            ForceUntrimHeader(p_epoch_start);
        }
        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));
        }
    }
    // Only return up to the latest total_valid_epochs fedpegscripts, which are enforced
    fedpegscripts.resize(std::min(fedpegscripts.size(), params.total_valid_epochs));
    return fedpegscripts;
}

template<typename T_tx_ref, typename T_merkle_block>
CScriptWitness CreatePeginWitnessInner(const CAmount& value, const CAsset& asset, const uint256& genesis_hash, const CScript& claim_script, const T_tx_ref& tx_ref, const T_merkle_block& merkle_block)