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fix(spore): dedupe lock-proxy outputs and honor empty clusterId
#614
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[P2] Scope the input restoration marker to its transaction
Construct two candidate transactions from a skeleton containing the same CellInput instance. Preparing the first marks that input in the module-global WeakMap. Preparing the second then takes this early return even though that transaction has no output restoring the owner input. Sharing an input object between candidate transactions is not evidence that both have restored it.
At reviewed head 2124d395cc98df5f41534f00b28873298a89f8fd, the offline regression's second transaction returns 0 CKB to the owner instead of the selected proxy's 1,000 CKB. After fee completion, that capacity enters the payer-output budget, plus an 89-shannon fee difference from omitting one output. On previous head d673bbf7407274f6be988c35187e46499c907917, both candidate transactions restore the owner input.
Validation: the shared-input candidate regression fails on this head and passes on the previous head. This demonstrates incorrect offline transaction construction with synthetic cells/read-only signers, not a signature bypass or a demonstrated unauthorized spend: the owner input still requires its normal lock authorization. No transaction was signed or broadcast.
Suggested fix
Do not use an input object's process-wide marker to establish restoration in another transaction. Track the selected outpoint's restoration within each transaction, while making that accounting survive supported cloning/serialization. Add a regression that independently prepares two candidates sharing a CellInput instance. This is a proposed direction, not a tested patch.
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[P2] Preserve proxy restoration when cloning or rebuilding a transaction
After one createSpore({ ..., clusterMode: "lockProxy" }), clone the returned transaction with tx.clone() (or rebuild it through a JSON round trip), then create another Spore of the same cluster. The inputs and existing restoration output survive, but neither WeakMap's object identity does. This check returns false and adds the selected proxy input as an output a second time.
At reviewed head 2124d395cc98df5f41534f00b28873298a89f8fd, the offline regression restores a 1,000 CKB proxy twice, producing 2,000 CKB of owner outputs instead of 1,000 CKB. The extra output increases the payer's funding requirement. The same clone/JSON cases on the previous head d673bbf7407274f6be988c35187e46499c907917 restore only once.
Validation: both reconstruction variants fail their one-restoration assertions on this head and pass on the previous head. Tests use synthetic cells and read-only signers, with no signing, broadcast or on-chain VM validation.
Suggested fix
Keep restoration accounting transaction-local and keyed by the selected outpoint, with a durable representation that survives supported cloning/serialization. Preserve the distinction between an independent owner payment and the output restoring this input. Add clone and JSON-round-trip regressions between successive preparations. This is a proposed direction, not a tested patch.
Generated by ChatGPT · Alter Ego
);
}
function markRestoredLockProxy(
tx: ccc.Transaction,
input: ccc.CellInput,
): void {
restoredLockProxyInputs.set(input, true);
const restored = restoredLockProxyOutPoints.get(tx) ?? new Set<string>();
nl -ba packages/spore/src/spore/lockProxy.test.ts | sed -n '80,100p'
Repository: ckb-devrel/ccc
Length of output: 976
Re-check the restoration marker after the getCell await.
The restoration check at advanced.ts:86 runs before await proxyInput.getCell(signer.client), and the marker is set only after the output is added. Two overlapping prepareCluster calls that share a tx and proxy input can both pass the check and both add a restoration output. Move the check so it runs again after the await, with no await between the re-check and the add and mark.
🐛 Suggested fix
--- "a/packages/spore/src/spore/advanced.ts"+++ "b/packages/spore/src/spore/advanced.ts"@@ -82,11 +82,14 @@
// output. A same-lock payment or Spore (even with the same type, data,
// and capacity) is independent and must not skip the restore. Track the
// input/outPoint so a second spore of this cluster reuses that restore.
const proxyInput = tx.getInput(lockProxyInputIndex)!;
if (!hasRestoredLockProxy(tx, proxyInput)) {
- tx.addOutput(await proxyInput.getCell(signer.client));- markRestoredLockProxy(tx, proxyInput);+ const proxyCell = await proxyInput.getCell(signer.client);+ if (!hasRestoredLockProxy(tx, proxyInput)) {+ tx.addOutput(proxyCell);+ markRestoredLockProxy(tx, proxyInput);+ }
}
tx.addCellDeps({
outPoint: cluster.outPoint,
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Review comment at @packages/spore/src/spore/advanced.ts around lines 86 - 88:
Re-check the restoration marker in the `prepareCluster` flow after
`proxyInput.getCell` resolves, then add the fetched cell and mark the proxy
restored only if the marker is still absent. Keep the re-check, `tx.addOutput`,
and `markRestoredLockProxy` contiguous with no await between them.
After applying the fix, consider running `coderabbit review --agent` for local
review. Visit https://docs.coderabbit.ai/cli?utm_source=ghpr
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ownerUntyped.reduce((sum, output) => sum + output.capacity, 0n),
).toBe(paymentCapacity + proxyCapacity);
},
);
});
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[P2] Scope the input restoration marker to its transaction
Construct two candidate transactions from a skeleton containing the same
CellInputinstance. Preparing the first marks that input in the module-global WeakMap. Preparing the second then takes this early return even though that transaction has no output restoring the owner input. Sharing an input object between candidate transactions is not evidence that both have restored it.At reviewed head
2124d395cc98df5f41534f00b28873298a89f8fd, the offline regression's second transaction returns 0 CKB to the owner instead of the selected proxy's 1,000 CKB. After fee completion, that capacity enters the payer-output budget, plus an 89-shannon fee difference from omitting one output. On previous headd673bbf7407274f6be988c35187e46499c907917, both candidate transactions restore the owner input.Validation: the shared-input candidate regression fails on this head and passes on the previous head. This demonstrates incorrect offline transaction construction with synthetic cells/read-only signers, not a signature bypass or a demonstrated unauthorized spend: the owner input still requires its normal lock authorization. No transaction was signed or broadcast.
Suggested fix
Do not use an input object's process-wide marker to establish restoration in another transaction. Track the selected outpoint's restoration within each transaction, while making that accounting survive supported cloning/serialization. Add a regression that independently prepares two candidates sharing a
CellInputinstance. This is a proposed direction, not a tested patch.Generated by ChatGPT · Alter Ego