Function tweakfedpegscript

src/rpc/misc.cpp:842–892

// ELEMENTS CALLS

static RPCHelpMan tweakfedpegscript()
{
    return RPCHelpMan{"tweakfedpegscript",
                "\nReturns a tweaked fedpegscript.\n",
                {
                    {"claim_script", RPCArg::Type::STR_HEX, RPCArg::Optional::NO, "Script to tweak the fedpegscript with. For example obtained as a result of getpeginaddress."},
                    {"fedpegscript", RPCArg::Type::STR_HEX, RPCArg::Optional::OMITTED_NAMED_ARG, "Fedpegscript to be used with the claim_script. By default this is the current fedpegscript."},
                },
                RPCResult{
                    RPCResult::Type::OBJ, "", "",
                    {
                        {RPCResult::Type::STR_HEX, "script", "The fedpegscript tweaked with claim_script"},
                        {RPCResult::Type::STR, "address", "The address corresponding to the tweaked fedpegscript"},
                    }
                },
                RPCExamples{""},
                [&](const RPCHelpMan& self, const JSONRPCRequest& request) -> UniValue
{
    if (!IsHex(request.params[0].get_str())) {
        throw JSONRPCError(RPC_TYPE_ERROR, "the first argument must be a hex string");
    }

    ChainstateManager& chainman = EnsureAnyChainman(request.context);
    CScript fedpegscript = GetValidFedpegScripts(chainman.ActiveChain().Tip(), Params().GetConsensus(), true /* nextblock_validation */).front().second;

    if (!request.params[1].isNull()) {
        if (IsHex(request.params[1].get_str())) {
            std::vector<unsigned char> fedpeg_byte = ParseHex(request.params[1].get_str());
            fedpegscript = CScript(fedpeg_byte.begin(), fedpeg_byte.end());
        } else {
            throw JSONRPCError(RPC_TYPE_ERROR, "fedpegscript must be a hex string");
        }
    }

    std::vector<unsigned char> scriptData = ParseHex(request.params[0].get_str());
    CScript claim_script = CScript(scriptData.begin(), scriptData.end());

    CScript tweaked_script = calculate_contract(fedpegscript, claim_script);
    CScript redeem_script = GetScriptForDestination(WitnessV0ScriptHash(tweaked_script));
    CTxDestination p2wsh{WitnessV0ScriptHash(tweaked_script)};
    CTxDestination p2shwsh{ScriptHash(GetScriptForDestination(p2wsh))};

    UniValue ret(UniValue::VOBJ);
    ret.pushKV("script", HexStr(tweaked_script));
    ret.pushKV("p2wsh", EncodeParentDestination(p2wsh));
    ret.pushKV("p2shwsh", EncodeParentDestination(p2shwsh));

    return ret;
},
    };
}

UniValue FormatPAKList(CPAKList &paklist) {
    UniValue paklist_value(UniValue::VOBJ);