previousSignaturePayload method
Generate the payload for the previous signature by encoding address, type and data
Implementation
Uint8List previousSignaturePayload() {
final bufCodeSize = toByteArray(data!.code!.length, length: 4);
// ignore: prefer_final_locals
var contentSize = utf8.encode(data!.content!).length;
final bufContentSize = toByteArray(contentSize, length: 4);
var ownershipsBuffers = Uint8List(0);
for (final ownership in data!.ownerships) {
final bufAuthKeyLength = Uint8List.fromList(
toByteArray(ownership.authorizedPublicKeys.length),
);
final authorizedKeysBuffer = <Uint8List>[
Uint8List.fromList(<int>[bufAuthKeyLength.length]),
bufAuthKeyLength,
];
final newAuthorizedPublicKeys = <AuthorizedKey>[];
for (final element in ownership.authorizedPublicKeys) {
if (element.publicKey != null) {
newAuthorizedPublicKeys.add(
AuthorizedKey(
encryptedSecretKey: element.encryptedSecretKey,
publicKey: element.publicKey!.toUpperCase(),
),
);
}
}
newAuthorizedPublicKeys.sort(
(AuthorizedKey a, AuthorizedKey b) =>
a.publicKey!.compareTo(b.publicKey!),
);
for (final authorizedKey in newAuthorizedPublicKeys) {
authorizedKeysBuffer
.add(Uint8List.fromList(hexToUint8List(authorizedKey.publicKey!)));
authorizedKeysBuffer.add(
Uint8List.fromList(
hexToUint8List(authorizedKey.encryptedSecretKey!),
),
);
}
ownershipsBuffers = concatUint8List(<Uint8List>[
ownershipsBuffers,
toByteArray(
Uint8List.fromList(hexToUint8List(ownership.secret!)).lengthInBytes,
length: 4,
),
Uint8List.fromList(hexToUint8List(ownership.secret!)),
concatUint8List(authorizedKeysBuffer),
]);
}
var ucoTransfersBuffers = Uint8List(0);
if (data!.ledger!.uco!.transfers.isNotEmpty) {
for (final ucoTransfer in data!.ledger!.uco!.transfers) {
ucoTransfersBuffers = concatUint8List(<Uint8List>[
ucoTransfersBuffers,
Uint8List.fromList(hexToUint8List(ucoTransfer.to!)),
toByteArray(ucoTransfer.amount!, length: 8),
]);
}
}
var tokenTransfersBuffers = Uint8List(0);
if (data!.ledger!.token!.transfers.isNotEmpty) {
for (final tokenTransfer in data!.ledger!.token!.transfers) {
final bufTokenId =
Uint8List.fromList(toByteArray(tokenTransfer.tokenId!));
tokenTransfersBuffers = concatUint8List(<Uint8List>[
tokenTransfersBuffers,
Uint8List.fromList(hexToUint8List(tokenTransfer.tokenAddress!)),
Uint8List.fromList(hexToUint8List(tokenTransfer.to!)),
toByteArray(tokenTransfer.amount!, length: 8),
Uint8List.fromList(<int>[bufTokenId.length]),
bufTokenId,
]);
}
}
var recipientsBuffers = Uint8List(0);
if (data!.recipients.isNotEmpty) {
for (final recipient in data!.recipients) {
if (recipient.action == null && recipient.args == null) {
recipientsBuffers = concatUint8List(<Uint8List>[
recipientsBuffers,
// 0 = unnamed action
Uint8List.fromList([0]),
hexToUint8List(recipient.address!),
]);
} else {
final serializedArgs = recipient.args!
.map((arg) => typed_encoding.serialize(arg))
.toList();
recipientsBuffers = concatUint8List(
<Uint8List>[
recipientsBuffers,
// 1 = named action
Uint8List.fromList([1]),
hexToUint8List(recipient.address!),
toByteArray(recipient.action!.length),
Uint8List.fromList(utf8.encode(recipient.action!)),
Uint8List.fromList([serializedArgs.length]),
...serializedArgs,
],
);
}
}
}
final bufOwnershipLength =
Uint8List.fromList(toByteArray(data!.ownerships.length));
final bufUCOTransferLength =
Uint8List.fromList(toByteArray(data!.ledger!.uco!.transfers.length));
final bufTokenTransferLength =
Uint8List.fromList(toByteArray(data!.ledger!.token!.transfers.length));
final bufRecipientLength =
Uint8List.fromList(toByteArray(data!.recipients.length));
return concatUint8List(<Uint8List>[
toByteArray(version, length: 4),
Uint8List.fromList(hexToUint8List(address!.address!)),
Uint8List.fromList(<int>[txTypes[type]!]),
bufCodeSize,
Uint8List.fromList(utf8.encode(data!.code!)),
bufContentSize,
Uint8List.fromList(utf8.encode(data!.content!)),
Uint8List.fromList(<int>[bufOwnershipLength.length]),
bufOwnershipLength,
ownershipsBuffers,
Uint8List.fromList(<int>[bufUCOTransferLength.length]),
bufUCOTransferLength,
ucoTransfersBuffers,
Uint8List.fromList(<int>[bufTokenTransferLength.length]),
bufTokenTransferLength,
tokenTransfersBuffers,
Uint8List.fromList(<int>[bufRecipientLength.length]),
bufRecipientLength,
recipientsBuffers,
]);
}