<fix>(sdk): fix logic/security bugs + raise test coverage to ~80%#947
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kyonRay merged 4 commits intoJun 22, 2026
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- codec/scale ScaleCodecReader: fix 32-bit int overflow in decodeInteger (1<<(bytesSize*8) overflowed to 1 for bytesSize>=4, corrupting unsigned SCALE values >= uint32); add a bounds/negative guard in readByteArray so a forged compact length cannot over-read or OOM. - client ClientImpl.getTransactionAsync: send the withProof flag the async path was dropping (matching the synchronous getTransaction). - eventsub EventSubscribeImp.subscribeEvent: use the topic-position index for addTopic (was wrongly using the contract-address loop index); guard negative index in EventSubParams.addTopic. - filter Publisher: use CopyOnWriteArrayList to avoid ConcurrentModificationException between subscribe/unsubscribe and publish. - precompiled BalanceService: stop mutating the shared PrecompiledRetCode.CODE_SUCCESS singleton (concurrency race + per-call receipt leak into global state); return a fresh copy instead. - crypto P12KeyStore: fix inverted self-signed cert validity (notBefore was advanced +100y instead of notAfter, making every cert never-valid) and a FileOutputStream leak on the keystore write path.
Add ~1500 new unit and integration tests across codec (ABI/SCALE, datatypes, generated types, ContractCodec), crypto, config, client RPC + response POJOs, transaction managers, precompiled services, auth governance, filter/eventsub. Merged JaCoCo coverage (unit + integration against local standard and auth-mode chains): ~80% instruction / ~81% line / ~86% method, up from ~30%. Also add CLAUDE.md / AGENTS.md contributor/build guide.
This was referenced Jun 16, 2026
- Move field/constant declarations to the top of the class (FieldDeclarationsShouldBeAtStartOfClass) across the codec unit tests. - Replace `x.equals(null)` assertions with `assertNotEquals(null, x)` (EqualsNull). - Throw IllegalStateException instead of a raw RuntimeException (AvoidThrowingRawExceptionTypes). - Remove the reflection/`setAccessible` test of the private ContractCodec.buildType (AvoidAccessibilityAlteration); cover the equivalent type-dispatch via the public encode/decode API instead (new ContractCodecBuildTypePublicTest). - Split the over-complex auth integration test methods into smaller ones (NPathComplexity), preserving the exact production calls/coverage. - Remove unused locals/params, document empty callback bodies, and delete the dead always-skipped EIP-1559 placeholder test (UnconditionalIfStatement / UnusedLocalVariable / UnusedFormalParameter / UncommentedEmptyMethodBody). Merged JaCoCo coverage remains >= 80% (unit + integration).
This was referenced Jun 16, 2026
…hable The new coverage integration tests built one BcosSDK/Client in @BeforeClass without try/catch, so a transient peer-connection refusal marked the whole class as classMethod FAILED (red CI) even though sibling classes connected fine. Wrap each setUp in try/catch and add a @before guard that uses Assume.assumeTrue(client != null) so an unreachable/flaky chain skips the class instead of failing it. Also loosen a node-version-sensitive keyColumn assertion in PrecompiledWrapperDecodeIntegrationTest (it threw AssertionError, which the existing catch(Exception) did not catch).
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Summary
A code-scan + test-hardening pass over the v3.x SDK:
CLAUDE.md/AGENTS.mdcontributor & build guide.Bug fixes (
src/main)codec/scale/ScaleCodecReader(critical):1 << (bytesSize*8)was 32-bitintarithmetic and overflowed to1forbytesSize >= 4, silently corrupting every SCALE-decoded unsigned integer>= uint32with the high bit set. Fixed withBigInteger.ONE.shiftLeft(...). Also added a bounds/negative guard inreadByteArrayso a forged compact length cannot over-read or OOM.client/ClientImpl.getTransactionAsync: the async path dropped thewithProofflag that the synchronousgetTransactionsends. Now consistent.eventsub/EventSubscribeImp.subscribeEvent:addTopic(...)used the contract-address loop index as the topic slot instead of the topic-position index, mis-routing/dropping topics for multi-contract subscriptions; also guards a negative index inEventSubParams.addTopic.filter/Publisher:ArrayListwas mutated bysubscribe/unsubscribewhilepublish()iterated →ConcurrentModificationExceptioncould kill polling. NowCopyOnWriteArrayList.contract/precompiled/balance/BalanceService: mutated the shared globalPrecompiledRetCode.CODE_SUCCESSsingleton (same class of bug as <fix>(precompiled): fix predicate map bug in system service. #932) — a concurrency race that also leaked per-call receipts into global state. Now returns a fresh copy.crypto/keystore/P12KeyStore: self-signed cert validity was inverted (notBeforeadvanced +100y instead ofnotAfter), producing certificates that are never valid; also fixed aFileOutputStreamleak on the keystore write path.Tests
~1,500 new unit + integration tests across codec (ABI/SCALE, datatypes, generated types,
ContractCodec), crypto, config, client RPC + response POJOs, transaction managers, precompiled services, auth governance, and filter/eventsub../gradlew test(no chain required)../gradlew integrationTest— validated locally against standard and auth-mode FISCO BCOS v3.7.3 chains.Merged JaCoCo coverage (unit + integration): ~80% instruction / ~81% line / ~86% method, up from ~30%.
Notes
HashCalculatorTest.testTxV2HashCalculateintegration test fails against a v3.7.3 node (TxV2 feature mismatch) — unrelated to this change.🤖 Generated with Claude Code