mirror of
https://github.com/cypherstack/stack_wallet.git
synced 2024-11-17 01:37:54 +00:00
notification tx absurd fees error fix when estimating a tx size
This commit is contained in:
julian
parent
55ed68a89d
commit
6bb133c552
2 changed files with 250 additions and 213 deletions
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@ -26,6 +26,7 @@ import 'package:stackwallet/widgets/desktop/primary_button.dart';
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import 'package:stackwallet/widgets/desktop/secondary_button.dart';
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import 'package:stackwallet/widgets/loading_indicator.dart';
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import 'package:stackwallet/widgets/rounded_container.dart';
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import 'package:stackwallet/widgets/stack_dialog.dart';
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import 'package:tuple/tuple.dart';
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class PaynymDetailsPopup extends ConsumerStatefulWidget {
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@ -102,6 +103,20 @@ class _PaynymDetailsPopupState extends ConsumerState<PaynymDetailsPopup> {
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_showInsufficientFundsInfo = true;
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});
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return;
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} catch (e) {
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if (mounted) {
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canPop = true;
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Navigator.of(context).pop();
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}
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await showDialog<void>(
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context: context,
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builder: (context) => StackOkDialog(
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title: "Error",
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message: e.toString(),
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),
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);
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return;
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}
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if (mounted) {
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@ -398,135 +398,162 @@ mixin PaynymWalletInterface {
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int additionalOutputs = 0,
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List<UTXO>? utxos,
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}) async {
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final amountToSend = _dustLimitP2PKH;
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final List<UTXO> availableOutputs =
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utxos ?? await _db.getUTXOs(_walletId).findAll();
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final List<UTXO> spendableOutputs = [];
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int spendableSatoshiValue = 0;
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try {
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final amountToSend = _dustLimitP2PKH;
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final List<UTXO> availableOutputs =
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utxos ?? await _db.getUTXOs(_walletId).findAll();
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final List<UTXO> spendableOutputs = [];
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int spendableSatoshiValue = 0;
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// Build list of spendable outputs and totaling their satoshi amount
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for (var i = 0; i < availableOutputs.length; i++) {
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if (availableOutputs[i].isBlocked == false &&
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availableOutputs[i]
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.isConfirmed(await _getChainHeight(), _minConfirms) ==
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true) {
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spendableOutputs.add(availableOutputs[i]);
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spendableSatoshiValue += availableOutputs[i].value;
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// Build list of spendable outputs and totaling their satoshi amount
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for (var i = 0; i < availableOutputs.length; i++) {
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if (availableOutputs[i].isBlocked == false &&
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availableOutputs[i]
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.isConfirmed(await _getChainHeight(), _minConfirms) ==
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true) {
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spendableOutputs.add(availableOutputs[i]);
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spendableSatoshiValue += availableOutputs[i].value;
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}
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}
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}
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if (spendableSatoshiValue < amountToSend) {
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// insufficient balance
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throw InsufficientBalanceException(
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"Spendable balance is less than the minimum required for a notification transaction.");
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} else if (spendableSatoshiValue == amountToSend) {
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// insufficient balance due to missing amount to cover fee
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throw InsufficientBalanceException(
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"Remaining balance does not cover the network fee.");
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}
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// sort spendable by age (oldest first)
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spendableOutputs.sort((a, b) => b.blockTime!.compareTo(a.blockTime!));
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int satoshisBeingUsed = 0;
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int outputsBeingUsed = 0;
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List<UTXO> utxoObjectsToUse = [];
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for (int i = 0;
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satoshisBeingUsed < amountToSend && i < spendableOutputs.length;
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i++) {
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utxoObjectsToUse.add(spendableOutputs[i]);
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satoshisBeingUsed += spendableOutputs[i].value;
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outputsBeingUsed += 1;
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}
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// add additional outputs if required
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for (int i = 0;
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i < additionalOutputs && outputsBeingUsed < spendableOutputs.length;
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i++) {
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utxoObjectsToUse.add(spendableOutputs[outputsBeingUsed]);
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satoshisBeingUsed += spendableOutputs[outputsBeingUsed].value;
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outputsBeingUsed += 1;
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}
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// gather required signing data
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final utxoSigningData = await _fetchBuildTxData(utxoObjectsToUse);
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final int vSizeForNoChange = (await _createNotificationTx(
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targetPaymentCodeString: targetPaymentCodeString,
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utxosToUse: utxoObjectsToUse,
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utxoSigningData: utxoSigningData,
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change: 0))
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.item2;
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final int vSizeForWithChange = (await _createNotificationTx(
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targetPaymentCodeString: targetPaymentCodeString,
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utxosToUse: utxoObjectsToUse,
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utxoSigningData: utxoSigningData,
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change: satoshisBeingUsed - amountToSend))
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.item2;
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// Assume 2 outputs, for recipient and payment code script
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int feeForNoChange = _estimateTxFee(
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vSize: vSizeForNoChange,
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feeRatePerKB: selectedTxFeeRate,
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);
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// Assume 3 outputs, for recipient, payment code script, and change
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int feeForWithChange = _estimateTxFee(
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vSize: vSizeForWithChange,
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feeRatePerKB: selectedTxFeeRate,
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);
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if (_coin == Coin.dogecoin || _coin == Coin.dogecoinTestNet) {
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if (feeForNoChange < vSizeForNoChange * 1000) {
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feeForNoChange = vSizeForNoChange * 1000;
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if (spendableSatoshiValue < amountToSend) {
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// insufficient balance
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throw InsufficientBalanceException(
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"Spendable balance is less than the minimum required for a notification transaction.");
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} else if (spendableSatoshiValue == amountToSend) {
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// insufficient balance due to missing amount to cover fee
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throw InsufficientBalanceException(
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"Remaining balance does not cover the network fee.");
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}
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if (feeForWithChange < vSizeForWithChange * 1000) {
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feeForWithChange = vSizeForWithChange * 1000;
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// sort spendable by age (oldest first)
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spendableOutputs.sort((a, b) => b.blockTime!.compareTo(a.blockTime!));
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int satoshisBeingUsed = 0;
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int outputsBeingUsed = 0;
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List<UTXO> utxoObjectsToUse = [];
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for (int i = 0;
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satoshisBeingUsed < amountToSend && i < spendableOutputs.length;
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i++) {
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utxoObjectsToUse.add(spendableOutputs[i]);
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satoshisBeingUsed += spendableOutputs[i].value;
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outputsBeingUsed += 1;
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}
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}
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if (satoshisBeingUsed - amountToSend > feeForNoChange + _dustLimitP2PKH) {
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// try to add change output due to "left over" amount being greater than
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// the estimated fee + the dust limit
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int changeAmount = satoshisBeingUsed - amountToSend - feeForWithChange;
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// add additional outputs if required
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for (int i = 0;
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i < additionalOutputs && outputsBeingUsed < spendableOutputs.length;
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i++) {
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utxoObjectsToUse.add(spendableOutputs[outputsBeingUsed]);
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satoshisBeingUsed += spendableOutputs[outputsBeingUsed].value;
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outputsBeingUsed += 1;
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}
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// check estimates are correct and build notification tx
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if (changeAmount >= _dustLimitP2PKH &&
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satoshisBeingUsed - amountToSend - changeAmount == feeForWithChange) {
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var txn = await _createNotificationTx(
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targetPaymentCodeString: targetPaymentCodeString,
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utxosToUse: utxoObjectsToUse,
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utxoSigningData: utxoSigningData,
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change: changeAmount,
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);
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// gather required signing data
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final utxoSigningData = await _fetchBuildTxData(utxoObjectsToUse);
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int feeBeingPaid = satoshisBeingUsed - amountToSend - changeAmount;
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final int vSizeForNoChange = (await _createNotificationTx(
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targetPaymentCodeString: targetPaymentCodeString,
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utxosToUse: utxoObjectsToUse,
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utxoSigningData: utxoSigningData,
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change: 0,
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dustLimit:
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satoshisBeingUsed, // override amount to get around absurd fees error
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))
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.item2;
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// make sure minimum fee is accurate if that is being used
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if (txn.item2 - feeBeingPaid == 1) {
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changeAmount -= 1;
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feeBeingPaid += 1;
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txn = await _createNotificationTx(
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final int vSizeForWithChange = (await _createNotificationTx(
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targetPaymentCodeString: targetPaymentCodeString,
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utxosToUse: utxoObjectsToUse,
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utxoSigningData: utxoSigningData,
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change: satoshisBeingUsed - amountToSend,
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))
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.item2;
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// Assume 2 outputs, for recipient and payment code script
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int feeForNoChange = _estimateTxFee(
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vSize: vSizeForNoChange,
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feeRatePerKB: selectedTxFeeRate,
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);
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// Assume 3 outputs, for recipient, payment code script, and change
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int feeForWithChange = _estimateTxFee(
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vSize: vSizeForWithChange,
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feeRatePerKB: selectedTxFeeRate,
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);
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if (_coin == Coin.dogecoin || _coin == Coin.dogecoinTestNet) {
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if (feeForNoChange < vSizeForNoChange * 1000) {
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feeForNoChange = vSizeForNoChange * 1000;
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}
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if (feeForWithChange < vSizeForWithChange * 1000) {
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feeForWithChange = vSizeForWithChange * 1000;
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}
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}
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if (satoshisBeingUsed - amountToSend > feeForNoChange + _dustLimitP2PKH) {
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// try to add change output due to "left over" amount being greater than
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// the estimated fee + the dust limit
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int changeAmount = satoshisBeingUsed - amountToSend - feeForWithChange;
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// check estimates are correct and build notification tx
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if (changeAmount >= _dustLimitP2PKH &&
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satoshisBeingUsed - amountToSend - changeAmount ==
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feeForWithChange) {
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var txn = await _createNotificationTx(
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targetPaymentCodeString: targetPaymentCodeString,
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utxosToUse: utxoObjectsToUse,
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utxoSigningData: utxoSigningData,
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change: changeAmount,
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);
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}
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Map<String, dynamic> transactionObject = {
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"hex": txn.item1,
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"recipientPaynym": targetPaymentCodeString,
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"amount": amountToSend,
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"fee": feeBeingPaid,
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"vSize": txn.item2,
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};
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return transactionObject;
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} else {
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// something broke during fee estimation or the change amount is smaller
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// than the dust limit. Try without change
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int feeBeingPaid = satoshisBeingUsed - amountToSend - changeAmount;
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// make sure minimum fee is accurate if that is being used
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if (txn.item2 - feeBeingPaid == 1) {
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changeAmount -= 1;
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feeBeingPaid += 1;
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txn = await _createNotificationTx(
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targetPaymentCodeString: targetPaymentCodeString,
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utxosToUse: utxoObjectsToUse,
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utxoSigningData: utxoSigningData,
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change: changeAmount,
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);
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}
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Map<String, dynamic> transactionObject = {
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"hex": txn.item1,
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"recipientPaynym": targetPaymentCodeString,
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"amount": amountToSend,
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"fee": feeBeingPaid,
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"vSize": txn.item2,
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};
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return transactionObject;
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} else {
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// something broke during fee estimation or the change amount is smaller
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// than the dust limit. Try without change
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final txn = await _createNotificationTx(
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targetPaymentCodeString: targetPaymentCodeString,
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utxosToUse: utxoObjectsToUse,
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utxoSigningData: utxoSigningData,
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change: 0,
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);
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int feeBeingPaid = satoshisBeingUsed - amountToSend;
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Map<String, dynamic> transactionObject = {
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"hex": txn.item1,
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"recipientPaynym": targetPaymentCodeString,
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"amount": amountToSend,
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"fee": feeBeingPaid,
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"vSize": txn.item2,
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};
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return transactionObject;
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}
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} else if (satoshisBeingUsed - amountToSend >= feeForNoChange) {
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// since we already checked if we need to add a change output we can just
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// build without change here
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final txn = await _createNotificationTx(
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targetPaymentCodeString: targetPaymentCodeString,
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utxosToUse: utxoObjectsToUse,
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@ -544,40 +571,22 @@ mixin PaynymWalletInterface {
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"vSize": txn.item2,
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};
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return transactionObject;
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}
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} else if (satoshisBeingUsed - amountToSend >= feeForNoChange) {
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// since we already checked if we need to add a change output we can just
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// build without change here
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final txn = await _createNotificationTx(
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targetPaymentCodeString: targetPaymentCodeString,
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utxosToUse: utxoObjectsToUse,
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utxoSigningData: utxoSigningData,
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change: 0,
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);
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int feeBeingPaid = satoshisBeingUsed - amountToSend;
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Map<String, dynamic> transactionObject = {
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"hex": txn.item1,
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"recipientPaynym": targetPaymentCodeString,
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"amount": amountToSend,
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"fee": feeBeingPaid,
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"vSize": txn.item2,
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};
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return transactionObject;
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} else {
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// if we get here we do not have enough funds to cover the tx total so we
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// check if we have any more available outputs and try again
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if (spendableOutputs.length > outputsBeingUsed) {
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return prepareNotificationTx(
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selectedTxFeeRate: selectedTxFeeRate,
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targetPaymentCodeString: targetPaymentCodeString,
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additionalOutputs: additionalOutputs + 1,
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);
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} else {
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throw InsufficientBalanceException(
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"Remaining balance does not cover the network fee.");
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// if we get here we do not have enough funds to cover the tx total so we
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// check if we have any more available outputs and try again
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if (spendableOutputs.length > outputsBeingUsed) {
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return prepareNotificationTx(
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selectedTxFeeRate: selectedTxFeeRate,
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targetPaymentCodeString: targetPaymentCodeString,
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additionalOutputs: additionalOutputs + 1,
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);
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} else {
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throw InsufficientBalanceException(
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"Remaining balance does not cover the network fee.");
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}
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}
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} catch (e) {
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rethrow;
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}
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}
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@ -588,96 +597,109 @@ mixin PaynymWalletInterface {
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required List<UTXO> utxosToUse,
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required Map<String, dynamic> utxoSigningData,
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required int change,
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int? dustLimit,
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}) async {
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final targetPaymentCode =
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PaymentCode.fromPaymentCode(targetPaymentCodeString, _network);
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final myCode = await getPaymentCode(DerivePathType.bip44);
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try {
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final targetPaymentCode =
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PaymentCode.fromPaymentCode(targetPaymentCodeString, _network);
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final myCode = await getPaymentCode(DerivePathType.bip44);
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final utxo = utxosToUse.first;
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final txPoint = utxo.txid.fromHex.toList();
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final txPointIndex = utxo.vout;
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final utxo = utxosToUse.first;
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final txPoint = utxo.txid.fromHex.toList();
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final txPointIndex = utxo.vout;
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final rev = Uint8List(txPoint.length + 4);
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Util.copyBytes(Uint8List.fromList(txPoint), 0, rev, 0, txPoint.length);
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final buffer = rev.buffer.asByteData();
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buffer.setUint32(txPoint.length, txPointIndex, Endian.little);
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final rev = Uint8List(txPoint.length + 4);
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Util.copyBytes(Uint8List.fromList(txPoint), 0, rev, 0, txPoint.length);
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final buffer = rev.buffer.asByteData();
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buffer.setUint32(txPoint.length, txPointIndex, Endian.little);
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final myKeyPair = utxoSigningData[utxo.txid]["keyPair"] as btc_dart.ECPair;
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final myKeyPair =
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utxoSigningData[utxo.txid]["keyPair"] as btc_dart.ECPair;
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final S = SecretPoint(
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myKeyPair.privateKey!,
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targetPaymentCode.notificationPublicKey(),
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);
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final S = SecretPoint(
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myKeyPair.privateKey!,
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targetPaymentCode.notificationPublicKey(),
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);
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final blindingMask = PaymentCode.getMask(S.ecdhSecret(), rev);
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final blindingMask = PaymentCode.getMask(S.ecdhSecret(), rev);
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final blindedPaymentCode = PaymentCode.blind(
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payload: myCode.getPayload(),
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mask: blindingMask,
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unBlind: false,
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);
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final blindedPaymentCode = PaymentCode.blind(
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payload: myCode.getPayload(),
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mask: blindingMask,
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unBlind: false,
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);
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final opReturnScript = bscript.compile([
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(op.OPS["OP_RETURN"] as int),
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blindedPaymentCode,
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]);
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final opReturnScript = bscript.compile([
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(op.OPS["OP_RETURN"] as int),
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blindedPaymentCode,
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]);
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// build a notification tx
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final txb = btc_dart.TransactionBuilder(network: _network);
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txb.setVersion(1);
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// build a notification tx
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final txb = btc_dart.TransactionBuilder(network: _network);
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txb.setVersion(1);
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txb.addInput(
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utxo.txid,
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txPointIndex,
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null,
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utxoSigningData[utxo.txid]["output"] as Uint8List,
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);
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// add rest of possible inputs
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for (var i = 1; i < utxosToUse.length; i++) {
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final utxo = utxosToUse[i];
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txb.addInput(
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utxo.txid,
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utxo.vout,
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txPointIndex,
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null,
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utxoSigningData[utxo.txid]["output"] as Uint8List,
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);
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}
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// todo: modify address once segwit support is in our bip47
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txb.addOutput(
|
||||
targetPaymentCode.notificationAddressP2PKH(), _dustLimitP2PKH);
|
||||
txb.addOutput(opReturnScript, 0);
|
||||
// add rest of possible inputs
|
||||
for (var i = 1; i < utxosToUse.length; i++) {
|
||||
final utxo = utxosToUse[i];
|
||||
txb.addInput(
|
||||
utxo.txid,
|
||||
utxo.vout,
|
||||
null,
|
||||
utxoSigningData[utxo.txid]["output"] as Uint8List,
|
||||
);
|
||||
}
|
||||
|
||||
// TODO: add possible change output and mark output as dangerous
|
||||
if (change > 0) {
|
||||
// generate new change address if current change address has been used
|
||||
await _checkChangeAddressForTransactions();
|
||||
final String changeAddress = await _getCurrentChangeAddress();
|
||||
txb.addOutput(changeAddress, change);
|
||||
}
|
||||
// todo: modify address once segwit support is in our bip47
|
||||
txb.addOutput(
|
||||
targetPaymentCode.notificationAddressP2PKH(),
|
||||
dustLimit ?? _dustLimitP2PKH,
|
||||
);
|
||||
txb.addOutput(opReturnScript, 0);
|
||||
|
||||
txb.sign(
|
||||
vin: 0,
|
||||
keyPair: myKeyPair,
|
||||
witnessValue: utxo.value,
|
||||
witnessScript: utxoSigningData[utxo.txid]["redeemScript"] as Uint8List?,
|
||||
);
|
||||
// TODO: add possible change output and mark output as dangerous
|
||||
if (change > 0) {
|
||||
// generate new change address if current change address has been used
|
||||
await _checkChangeAddressForTransactions();
|
||||
final String changeAddress = await _getCurrentChangeAddress();
|
||||
txb.addOutput(changeAddress, change);
|
||||
}
|
||||
|
||||
// sign rest of possible inputs
|
||||
for (var i = 1; i < utxosToUse.length; i++) {
|
||||
final txid = utxosToUse[i].txid;
|
||||
txb.sign(
|
||||
vin: i,
|
||||
keyPair: utxoSigningData[txid]["keyPair"] as btc_dart.ECPair,
|
||||
witnessValue: utxosToUse[i].value,
|
||||
vin: 0,
|
||||
keyPair: myKeyPair,
|
||||
witnessValue: utxo.value,
|
||||
witnessScript: utxoSigningData[utxo.txid]["redeemScript"] as Uint8List?,
|
||||
);
|
||||
|
||||
// sign rest of possible inputs
|
||||
for (var i = 1; i < utxosToUse.length; i++) {
|
||||
final txid = utxosToUse[i].txid;
|
||||
txb.sign(
|
||||
vin: i,
|
||||
keyPair: utxoSigningData[txid]["keyPair"] as btc_dart.ECPair,
|
||||
witnessValue: utxosToUse[i].value,
|
||||
witnessScript:
|
||||
utxoSigningData[utxo.txid]["redeemScript"] as Uint8List?,
|
||||
);
|
||||
}
|
||||
|
||||
final builtTx = txb.build();
|
||||
|
||||
return Tuple2(builtTx.toHex(), builtTx.virtualSize());
|
||||
} catch (e, s) {
|
||||
Logging.instance.log(
|
||||
"_createNotificationTx(): $e\n$s",
|
||||
level: LogLevel.Error,
|
||||
);
|
||||
rethrow;
|
||||
}
|
||||
|
||||
final builtTx = txb.build();
|
||||
|
||||
return Tuple2(builtTx.toHex(), builtTx.virtualSize());
|
||||
}
|
||||
|
||||
Future<String> broadcastNotificationTx(
|
||||
|
|
|
|||
Loading…
Reference in a new issue