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Correction to commit #eb876e1

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Block serialization is in fact affected by the online accounts serialization, as we have to calculate the expected length ahead of time.
This commit is contained in:
CalDescent 2022-04-01 18:39:34 +01:00
parent 9a1941fac4
commit 5857929508
2 changed files with 25 additions and 6 deletions
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29
src/main/java/org/qortal/block/Block.java
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@ -977,11 +977,7 @@ public class Block {
return ValidationResult.ONLINE_ACCOUNT_SIGNATURES_MISSING;
// Verify the online account signatures length
int expectedLength;
if (this.blockData.getTimestamp() >= BlockChain.getInstance().getOnlineAccountsMemoryPoWTimestamp())
expectedLength = onlineRewardShares.size() * (Transformer.SIGNATURE_LENGTH + Transformer.REDUCED_SIGNATURE_LENGTH + Transformer.INT_LENGTH + (OnlineAccountsManager.MAX_NONCE_COUNT * Transformer.INT_LENGTH));
else
expectedLength = onlineRewardShares.size() * Transformer.SIGNATURE_LENGTH;
int expectedLength = Block.getExpectedOnlineAccountsSignaturesLength(onlineRewardShares.size(), this.blockData.getTimestamp());
if (this.blockData.getOnlineAccountsSignatures().length != expectedLength)
return ValidationResult.ONLINE_ACCOUNT_SIGNATURES_MALFORMED;
@ -2064,6 +2060,29 @@ public class Block {
return null;
}
/**
* Expected length of serialized online accounts
* @param onlineRewardSharesCount the number of reward shares in the serialized data
* @param timestamp the block's timestamp, used for versioning / serialization differences
* @return the number of bytes to expect
*/
public static int getExpectedOnlineAccountsSignaturesLength(int onlineRewardSharesCount, long timestamp) {
int expectedLength;
if (timestamp >= BlockChain.getInstance().getOnlineAccountsMemoryPoWTimestamp()) {
// byte array contains signatures, reduced signatures, and nonces
expectedLength = onlineRewardSharesCount *
(Transformer.SIGNATURE_LENGTH + Transformer.REDUCED_SIGNATURE_LENGTH + Transformer.INT_LENGTH +
(OnlineAccountsManager.MAX_NONCE_COUNT * Transformer.INT_LENGTH));
}
else {
// byte array contains signatures only
expectedLength = onlineRewardSharesCount * Transformer.SIGNATURE_LENGTH;
}
return expectedLength;
}
private void logDebugInfo() {
try {
// Avoid calculations if possible. We have to check against INFO here, since Level.isMoreSpecificThan() confusingly uses <= rather than just <

2
src/main/java/org/qortal/transform/block/BlockTransformer.java
View File

@ -217,7 +217,7 @@ public class BlockTransformer extends Transformer {
// Online accounts timestamp is only present if there are also signatures
onlineAccountsTimestamp = byteBuffer.getLong();
final int signaturesByteLength = onlineAccountsSignaturesCount * Transformer.SIGNATURE_LENGTH;
final int signaturesByteLength = Block.getExpectedOnlineAccountsSignaturesLength(onlineAccountsSignaturesCount, timestamp);
if (signaturesByteLength > BlockChain.getInstance().getMaxBlockSize())
throw new TransformationException("Byte data too long for online accounts signatures");