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validation in prepareSparkMintTransaction and TODOs

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sneurlax 2023-12-07 15:58:23 -06:00
parent 5567d96f5a
commit 5f4ef72e64
1 changed files with 33 additions and 3 deletions
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36
lib/wallets/wallet/wallet_mixin_interfaces/spark_interface.dart
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@ -300,12 +300,12 @@ mixin SparkInterface on Bip39HDWallet, ElectrumXInterface {
} }
} }
/// Transparent to Spark (mint) transaction creation /// Transparent to Spark (mint) transaction creation.
Future<TxData> prepareSparkMintTransaction({required TxData txData}) async { Future<TxData> prepareSparkMintTransaction({required TxData txData}) async {
// https://docs.google.com/document/d/1RG52GoYTZDvKlZz_3G4sQu-PpT6JWSZGHLNswWcrE3o/edit // https://docs.google.com/document/d/1RG52GoYTZDvKlZz_3G4sQu-PpT6JWSZGHLNswWcrE3o/edit
// this kind of transaction is generated like a regular transaction, but in // this kind of transaction is generated like a regular transaction, but in
// place of regulart outputs we put spark outputs, so for that we call // place of regular outputs we put spark outputs, so for that we call
// createSparkMintRecipients function, we get spark related data, // createSparkMintRecipients function, we get spark related data,
// everything else we do like for regular transaction, and we put CRecipient // everything else we do like for regular transaction, and we put CRecipient
// object as a tx outputs, we need to keep the order.. // object as a tx outputs, we need to keep the order..
@ -318,8 +318,35 @@ mixin SparkInterface on Bip39HDWallet, ElectrumXInterface {
// first then we generate spark related data. And we sign like regular // first then we generate spark related data. And we sign like regular
// transactions at the end. // transactions at the end.
List<int> serialContext = []; // Validate inputs.
// There should be at least one recipient.
if (txData.recipients == null || txData.recipients!.isEmpty) {
throw Exception("No recipients provided");
}
// For now let's limit to one recipient.
if (txData.recipients!.length > 1) {
throw Exception("Only one recipient supported");
}
// Limit outputs per tx to 16.
//
// See SPARK_OUT_LIMIT_PER_TX at https://github.com/firoorg/sparkmobile/blob/ef2e39aae18ecc49e0ddc63a3183e9764b96012e/include/spark.h#L16
// TODO limit outputs to 16.
// Limit spend value per tx to 1000000000000 satoshis.
//
// See SPARK_VALUE_SPEND_LIMIT_PER_TRANSACTION at https://github.com/firoorg/sparkmobile/blob/ef2e39aae18ecc49e0ddc63a3183e9764b96012e/include/spark.h#L17
// and COIN https://github.com/firoorg/sparkmobile/blob/ef2e39aae18ecc49e0ddc63a3183e9764b96012e/bitcoin/amount.h#L17
// Note that as MAX_MONEY is greater than this limit, we can ignore it. See https://github.com/firoorg/sparkmobile/blob/ef2e39aae18ecc49e0ddc63a3183e9764b96012e/bitcoin/amount.h#L31
// TODO limit spend value per tx to 1000000000000 satoshis.
// Create the serial context.
List<int> serialContext = [];
// TODO set serialContext to the serialized inputs.
// Create outputs.
final mintRecipients = LibSpark.createSparkMintRecipients( final mintRecipients = LibSpark.createSparkMintRecipients(
outputs: txData.recipients! outputs: txData.recipients!
.map((e) => ( .map((e) => (
@ -330,6 +357,9 @@ mixin SparkInterface on Bip39HDWallet, ElectrumXInterface {
.toList(), .toList(),
serialContext: Uint8List.fromList(serialContext), serialContext: Uint8List.fromList(serialContext),
); );
// TODO Add outputs to txData.
throw UnimplementedError(); throw UnimplementedError();
} }