Function getpeginaddress

src/wallet/rpc/elements.cpp:154–226

}

RPCHelpMan getpeginaddress()
{
    return RPCHelpMan{"getpeginaddress",
                "\nReturns information needed for claimpegin to move coins to the sidechain.\n"
                "The user should send coins from their Bitcoin wallet to the mainchain_address returned.\n",
                {},
                RPCResult{
                    RPCResult::Type::OBJ, "", "",
                    {
                        {RPCResult::Type::STR, "mainchain_address", "mainchain deposit address to send bitcoin to"},
                        {RPCResult::Type::STR_HEX, "claim_script", "claim script committed to by the mainchain address. This may be required in `claimpegin` to retrieve pegged-in funds\n"},
                    },
                },
                RPCExamples{
                    HelpExampleCli("getpeginaddress", "")
            + HelpExampleRpc("getpeginaddress", "")
                },
        [&](const RPCHelpMan& self, const JSONRPCRequest& request) -> UniValue
{
    std::shared_ptr<CWallet> const wallet = GetWalletForJSONRPCRequest(request);
    if (!wallet) return NullUniValue;
    CWallet* const pwallet = wallet.get();

    if (pwallet->chain().isInitialBlockDownload()) {
        throw JSONRPCError(RPC_WALLET_ERROR, "This action cannot be completed during initial sync or reindexing.");
    }

    LegacyScriptPubKeyMan* spk_man = pwallet->GetLegacyScriptPubKeyMan();
    if (!spk_man) {
        throw JSONRPCError(RPC_WALLET_ERROR, "This type of wallet does not support this command");
    }

    if (!pwallet->IsLocked()) {
        pwallet->TopUpKeyPool();
    }

    // Use native witness destination
    CTxDestination dest;
    bilingual_str error;
    if (!pwallet->GetNewDestination(OutputType::BECH32, "", dest, error)) {
        throw JSONRPCError(RPC_WALLET_KEYPOOL_RAN_OUT, error.original);
    }

    CScript dest_script = GetScriptForDestination(dest);

    // Also add raw scripts to index to recognize later.
    spk_man->AddCScript(dest_script);

    // Get P2CH deposit address on mainchain from most recent fedpegscript.
    const auto& fedpegscripts = GetValidFedpegScripts(pwallet->chain().getTip(), Params().GetConsensus(), true /* nextblock_validation */);
    if (fedpegscripts.empty()) {
        std::string message = "No valid fedpegscripts.";
        if (!g_con_elementsmode) {
            message += " Not running in Elements mode, check your 'chain' param.";
        }
        throw JSONRPCError(RPC_INTERNAL_ERROR, message);
    }
    CTxDestination mainchain_dest(WitnessV0ScriptHash(calculate_contract(fedpegscripts.front().second, dest_script)));