feat(platform-wallet): external recipient support for asset-lock address funding - #4501
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📝 WalkthroughWalkthroughChangesThe platform-wallet funding flow now supports external P2PKH recipients. Rust derives the fee reduction index from recipient-map ordering. FFI, JNI, and Swift APIs forward recipient entries without caller-supplied fee strategies. Swift persistence records recipient externality. External asset-lock funding
Estimated code review effort: 4 (Complex) | ~60 minutes Merge Risk: 🟡 Moderate · up to This change enables asset-lock funds to be sent to third-party addresses and adds a wallet-store migration. Merge readiness remains unresolved because authorization safeguards above signing are not established, migration interruption recovery is unverified, and the required clean iOS example-app rebuild has not been run; these gaps could allow unintended transfers, affect local wallet availability, or leave the iOS integration unvalidated. Suggested reviewers: Sequence Diagram(s)sequenceDiagram
participant SwiftWallet
participant JNI
participant PlatformWallet
participant CoreAssetLock
participant ExternalRecipient
SwiftWallet->>JNI: submit external funding recipients
JNI->>PlatformWallet: forward recipients without fee strategy
PlatformWallet->>PlatformWallet: validate external outputs and owned remainder
PlatformWallet->>PlatformWallet: derive ReduceOutput from recipient ordering
PlatformWallet->>CoreAssetLock: consume asset lock and create outputs
CoreAssetLock->>ExternalRecipient: credit explicit payment
CoreAssetLock->>PlatformWallet: return owned change
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Codecov Report✅ All modified and coverable lines are covered by tests. Additional details and impacted files@@ Coverage Diff @@
## v4.2-dev #4501 +/- ##
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- Coverage 87.84% 85.41% -2.43%
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Files 2748 2778 +30
Lines 355848 366721 +10873
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- Misses 43265 53491 +10226
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Preliminary review — Codex only
The external-recipient funding path preserves recipient ownership checks and canonical output ordering, but the SwiftData property addition mutates every registered schema that references the live model, leaving stores created from the base V2 schema unrecognizable. Two non-blocking API-contract gaps also remain around enforcing the sender-owned fee source and documenting the new unsafe FFI pointer obligations.
Source: Codex general, security-auditor, Rust-quality, and FFI-engineer reviewer lanes (exact backend model IDs were not present in the supplied evidence); final verifier backend model: grok-4.5. Orchestration-only, not reviewer evidence: openclaw-agent/cliproxy/gpt-5.6-sol.
Validated blockers were found in the Codex precheck. Opus is deferred until a fresh Codex revalidation clears the blocker gate.
Review provenance
- Codex reviewers:
gpt-5.6-sol— general (completed),gpt-5.6-sol— security-auditor (completed),gpt-5.6-sol— rust-quality (completed),gpt-5.6-sol— ffi-engineer (completed) - Verifier:
gpt-5.6-sol— verifier - Sonnet: not run (deferred by blocker gate)
🔴 1 blocking | 🟡 2 suggestion(s)
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These findings are from an automated code review. Verify each finding against the current code and only fix it if needed.
In `packages/swift-sdk/Sources/SwiftDashSDK/Persistence/Models/PersistentAssetLock.swift`:
- [BLOCKING] packages/swift-sdk/Sources/SwiftDashSDK/Persistence/Models/PersistentAssetLock.swift:188-193: Adding the property without a schema version makes existing stores unreadable
`DashSchemaV1.models` and `DashSchemaV2.models` both ultimately contain the live `PersistentAssetLock.self` type. Adding `recipientIsExternal` therefore changes the checksums of both registered schemas in place, so no schema in `DashMigrationPlan.schemas` matches a store created from the pre-PR V2 schema at the merge base. Because `DashModelContainer.create` supplies a staged migration plan, SwiftData cannot infer the optional-column migration from an unknown source schema and fails while opening the store. Preserve the pre-change asset-lock model definition for V2, introduce a V3 schema containing the new property, and register a V2-to-V3 lightweight stage. The migration test must create its source store with the genuinely frozen pre-change V2 model rather than the current live type.
In `packages/rs-platform-wallet/src/wallet/platform_addresses/fund_from_asset_lock.rs`:
- [SUGGESTION] packages/rs-platform-wallet/src/wallet/platform_addresses/fund_from_asset_lock.rs:268-270: External funding allows fees to reduce a third-party payment
The external preflight verifies that the `None` remainder output is owned, but passes the caller-provided `fee_strategy` through unchanged. A valid `ReduceOutput(i)` can therefore select an external explicit-amount output; DPP subtracts the fee from that payment, and the transition succeeds whenever the adjusted output remains nonzero. This violates the new API contract that the sender's change absorbs the fee and turns a positional-index mistake by a Rust or non-Swift FFI caller into an irreversible underpayment. Before resolving or broadcasting the asset lock, validate that fee deduction targets the owned remainder output, or construct the fee strategy internally from that output's canonical map position.
In `packages/rs-platform-wallet-ffi/src/platform_addresses/fund_from_asset_lock.rs`:
- [SUGGESTION] packages/rs-platform-wallet-ffi/src/platform_addresses/fund_from_asset_lock.rs:297-300: Unsafe entry points omit required raw-pointer contracts
The new unsafe function's safety section documents only the signer handles, although the implementation writes through `out_changeset`, constructs a slice from `addresses`, and may construct a slice from `fee_strategy`. Null checks do not establish alignment, initialization, allocation bounds, or lifetime, so Rust callers do not have the complete obligations needed for a sound call. Document these requirements here and on the new resume entry point, including that signer handles cannot be destroyed concurrently and must remain alive until the synchronously awaited worker finishes.
| /// Default `nil` on the column makes SwiftData's lightweight | ||
| /// migration safe for rows that pre-date this field; adding an | ||
| /// optional property to an existing `@Model` needs no new | ||
| /// `MigrationStage`, and the model LIST is unchanged, so | ||
| /// `DashMigrationPlan` is untouched. | ||
| public var recipientIsExternal: Bool? |
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🔴 Blocking: Adding the property without a schema version makes existing stores unreadable
DashSchemaV1.models and DashSchemaV2.models both ultimately contain the live PersistentAssetLock.self type. Adding recipientIsExternal therefore changes the checksums of both registered schemas in place, so no schema in DashMigrationPlan.schemas matches a store created from the pre-PR V2 schema at the merge base. Because DashModelContainer.create supplies a staged migration plan, SwiftData cannot infer the optional-column migration from an unknown source schema and fails while opening the store. Preserve the pre-change asset-lock model definition for V2, introduce a V3 schema containing the new property, and register a V2-to-V3 lightweight stage. The migration test must create its source store with the genuinely frozen pre-change V2 model rather than the current live type.
source: ['codex']
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Fixed in 3021ddb. You were right, and the inline justification I had written on the property ("the model LIST is unchanged, so DashMigrationPlan is untouched") was wrong about how schema identity works — it is per-model checksums, not list identity. That reasoning is corrected in the source and in the PR body.
What landed:
DashSchemaV1.PersistentAssetLock— a frozen copy of the pre-change shape, in the newPersistence/DashSchemaFrozenModels.swift. Nested, so SwiftData still derives the entity namePersistentAssetLockfrom the unqualified type name, which is what lets a stage map it onto the live type.- V1 and V2 now reference the frozen copy, so both checksums are what they were at the merge base and V1 -> V2 remains "add
PersistentTrackedMasternode" and nothing else. - New
DashSchemaV3carries the live models,.lightweight(V2 -> V3)is registered, andDashModelContainer.schemapoints at V3.
On the test — and being precise about what it does and does not prove. DashModelMigrationTests is 3 passed:
testV2AssetLockStoreMigratesToV3AndBackfillsRecipientIsExternalwrites a store fromSchema(versionedSchema: DashSchemaV2.self), which now resolves to the frozen type rather than the live one, then reopens it with V3 + the plan and asserts the row survives,recipientIsExternal == nil, and the new column is writable.testFrozenAssetLockKeepsTheLiveEntityNameasserts all three schemas declare an entity namedPersistentAssetLock, that V2 and V3 have identical entity sets, and that V2 minus V1 is exactly{PersistentTrackedMasternode}. That is the guard against the nesting silently renaming the entity and turning the stage into a drop+create.
Limitation, stated plainly: this is a single-binary test. It proves the V2 -> V3 stage works and that V2's entity naming and membership are right, but it does not independently re-derive the pre-PR checksum — it trusts that the frozen copy is schema-identical to the merge-base definition. I established that by diffing against the merge base (the only delta between the merge-base model and the live one is recipientIsExternal, and the frozen copy reproduces every attribute, its optionality, the accountIndexRaw default, the @Attribute(.unique) and the #Index) rather than by your two-binary method. So this is not a reproduction of your test; if you want the two-binary check in CI it deserves its own issue.
Scope: only PersistentAssetLock is frozen. The other 33 models are still referenced live from V1/V2, so the same latent defect applies to the next property added to any of them — including the existing V1 -> V2 stage. Freezing all of them is mechanical but wide, and I did not want a full persistence refactor riding along in a feature PR. It is documented at the top of DashSchemaFrozenModels.swift so the next person hits the instructions rather than the bug.
🤖 Posted autonomously by Claude on behalf of pasta.
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Resolved in 3021ddb — Adding the property without a schema version makes existing stores unreadable no longer present.
Auto-resolved by the review system based on the latest commit diff. If you believe this was closed in error, reopen the thread.
| // Step 1: pre-flight. Failing fast here avoids broadcasting | ||
| // an unfundable asset-lock tx. | ||
| validate_recipient_addresses(self, platform_account_index, &addresses).await?; | ||
| validate_recipient_addresses(self, platform_account_index, &addresses, ownership).await?; |
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🟡 Suggestion: External funding allows fees to reduce a third-party payment
The external preflight verifies that the None remainder output is owned, but passes the caller-provided fee_strategy through unchanged. A valid ReduceOutput(i) can therefore select an external explicit-amount output; DPP subtracts the fee from that payment, and the transition succeeds whenever the adjusted output remains nonzero. This violates the new API contract that the sender's change absorbs the fee and turns a positional-index mistake by a Rust or non-Swift FFI caller into an irreversible underpayment. Before resolving or broadcasting the asset lock, validate that fee deduction targets the owned remainder output, or construct the fee strategy internally from that output's canonical map position.
source: ['codex']
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Resolved in 6d1e85a — External funding allows fees to reduce a third-party payment no longer present.
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| /// # Safety | ||
| /// - `signer_address_handle` / `core_signer_handle` — see | ||
| /// [`platform_address_wallet_fund_from_asset_lock_signer`]. Same | ||
| /// ownership and validity contract. |
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🟡 Suggestion: Unsafe entry points omit required raw-pointer contracts
The new unsafe function's safety section documents only the signer handles, although the implementation writes through out_changeset, constructs a slice from addresses, and may construct a slice from fee_strategy. Null checks do not establish alignment, initialization, allocation bounds, or lifetime, so Rust callers do not have the complete obligations needed for a sound call. Document these requirements here and on the new resume entry point, including that signer handles cannot be destroyed concurrently and must remain alive until the synchronously awaited worker finishes.
| /// # Safety | |
| /// - `signer_address_handle` / `core_signer_handle` — see | |
| /// [`platform_address_wallet_fund_from_asset_lock_signer`]. Same | |
| /// ownership and validity contract. | |
| /// # Safety | |
| /// - `addresses` must be non-null. When `addresses_count > 0`, it must point | |
| /// to `addresses_count` initialized `FundingAddressEntryFFI` values and | |
| /// remain readable until this call returns. | |
| /// - `fee_strategy` may be null. When non-null and `fee_strategy_count > 0`, | |
| /// it must point to that many initialized `FeeStrategyStepFFI` values and | |
| /// remain readable until this call returns. | |
| /// - `out_changeset` must be non-null, properly aligned, and writable for one | |
| /// `PlatformAddressChangeSetFFI` value. | |
| /// - `signer_address_handle` and `core_signer_handle` must be valid, | |
| /// non-destroyed handles of their documented types. They must remain alive | |
| /// and must not be destroyed concurrently until this call returns. |
source: ['codex']
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Fixed in cf1a8ab. Both new exports now carry # Safety sections covering everything their bodies actually touch:
addresses— non-null, alignment, initialisation, single-allocation bounds, theisize::MAXlimit, and that theaddresses_count == 0short-circuit is specifically what makes a non-null sentinel sound in that one case.out_changeset— non-null, aligned, valid for one write, need not be initialised on entry, any changeset already stored there leaks rather than being freed, and ownership of the written value transfers to the caller, released withplatform_address_wallet_free_changeset.signer_address_handle/core_signer_handle— valid, non-destroyed, caller-retained, must not be destroyed or mutated from another thread, and must stay alive until the call returns — with the point that "until this returns" spans the entire blocking build/broadcast/submit pipeline, not just the marshalling.handle— must be live; a stale one is rejected by the handle table rather than dereferenced.- On the resume export,
out_point— non-null, aligned, one initialisedOutPointFFI, read once by value before the worker is spawned, caller retains ownership.
One deviation from your suggestion block: it gives fee_strategy a dereference contract, but on these two exports the parameters are _fee_strategy / _fee_strategy_count and are never read. Documenting a validity obligation that does not exist would be misleading, so they are documented as carrying no obligation at all, with NULL / 0 as the recommendation.
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Resolved in 6d1e85a — Unsafe entry points omit required raw-pointer contracts no longer present.
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Layering audit of the FFI diff + the Swift ordering logicAudited every piece this PR adds to Verdict: the two new FFI entry points are correctly placed — unchanged
The pre-existing duplicate-recipient rejection in What did move down: the
|
| suite | result |
|---|---|
platform-wallet |
773 passed, 0 failed (baseline 770; +4 fee-strategy tests, −1 superseded) |
platform-wallet-ffi |
297 passed, 0 failed (baseline 297) |
drive-abci address_funding_from_asset_lock |
112 passed, 0 failed (baseline 112) |
Swift FundFromAssetLockRecipientTests |
6 passed, 0 failed (baseline 8; 4 ordering tests replaced by 2 marshalling tests) |
cargo clippy clean on platform-wallet, platform-wallet-ffi, rs-unified-sdk-jni (only pre-existing dash-sdk doc warnings). cargo fmt applied. macOS xcframework slice rebuilt via build_ios.sh --target mac before running swift test.
New Rust tests pin the index-to-output mapping for a remainder that sorts first, last, and in the middle of a 4-recipient set, plus P2PKH-before-P2SH and the no-remainder error. Not verified: the Kotlin side of the JNI change (no Android toolchain here) — the Rust crate compiles and the blob layout is unchanged.
🤖 Posted autonomously by Claude on behalf of pasta.
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Inline comments:
In
`@packages/rs-platform-wallet/src/wallet/platform_addresses/fund_from_asset_lock.rs`:
- Around line 588-592: Correct the error message constructed in the
fund_from_asset_lock flow so the text between “to” and “absorb” uses normal
spacing, preserving the rest of the message and its FFI-visible wording.
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📒 Files selected for processing (10)
packages/rs-drive-abci/src/execution/validation/state_transition/state_transitions/address_funding_from_asset_lock/tests.rspackages/rs-platform-wallet-ffi/src/platform_addresses/fund_from_asset_lock.rspackages/rs-platform-wallet/src/wallet/platform_addresses/fund_from_asset_lock.rspackages/rs-platform-wallet/src/wallet/platform_addresses/provider.rspackages/rs-unified-sdk-jni/src/wallet_manager.rspackages/swift-sdk/Sources/SwiftDashSDK/Persistence/Models/PersistentAssetLock.swiftpackages/swift-sdk/Sources/SwiftDashSDK/PlatformWallet/ManagedPlatformAddressWallet.swiftpackages/swift-sdk/SwiftExampleApp/SwiftExampleApp/Views/FundFromAssetLockPlatformAddressView.swiftpackages/swift-sdk/SwiftTests/SwiftDashSDKIntegrationTests/Platform/CoreToPlatformIntegrationTests.swiftpackages/swift-sdk/SwiftTests/SwiftDashSDKTests/FundFromAssetLockRecipientTests.swift
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Preliminary review — Codex only
Rust-side fee targeting is fixed at this head: the wallet now derives ReduceOutput from the canonical recipient map. One blocking issue remains because the new SwiftData property mutates the registered V1 and V2 schemas in place; a two-binary reproduction using a pre-change V2 store failed with Cocoa error 134504, “Cannot use staged migration with an unknown model version.” Additional non-blocking issues affect Rust API compatibility, unsafe FFI contracts, panic containment, and one malformed diagnostic.
Source: Codex general, security-auditor, rust-quality, and ffi-engineer reviewer lanes — gpt-5.6-sol; final verifier backend — grok-4.5. Orchestration-only, not reviewer evidence: openclaw-agent/cliproxy/gpt-5.6-sol.
Validated blockers were found in the Codex precheck. Opus is deferred until a fresh Codex revalidation clears the blocker gate.
Review provenance
- Codex reviewers:
gpt-5.6-sol— general (completed),gpt-5.6-sol— security-auditor (completed),gpt-5.6-sol— rust-quality (completed),gpt-5.6-sol— ffi-engineer (completed) - Verifier:
gpt-5.6-sol— verifier - Sonnet: not run (deferred by blocker gate)
🔴 1 blocking | 🟡 2 suggestion(s) | 💬 1 nitpick(s)
2 carried-forward finding(s) already raised on this PR; not re-posting as new inline comments.
🤖 Prompt for all review comments with AI agents
These findings are from an automated code review. Verify each finding against the current code and only fix it if needed.
In `packages/rs-platform-wallet/src/wallet/platform_addresses/fund_from_asset_lock.rs`:
- [SUGGESTION] packages/rs-platform-wallet/src/wallet/platform_addresses/fund_from_asset_lock.rs:143-150: Preserve the existing Rust funding method signature
At the merge base, public `PlatformAddressWallet::fund_from_asset_lock` accepted an `AddressFundsFeeStrategy` between `addresses` and `address_signer`; this revision removes that argument. Out-of-tree Rust callers therefore fail to compile even though the PR states that existing Rust entry-point signatures remain unchanged. Keep a compatibility method with the old signature that ignores or deprecates the caller-supplied strategy while deriving the safe remainder strategy internally, or introduce an automatically derived method under a new name and retain the old method as a wrapper. This mirrors the C ABI, where the old fee parameters remain present but are ignored.
- [NITPICK] packages/rs-platform-wallet/src/wallet/platform_addresses/fund_from_asset_lock.rs:588-590: Fix the malformed error text
The defensive no-remainder error contains a long run of spaces between “to” and “absorb.” The current orchestrated flow validates recipient shape first, so this branch is not presently host-reachable, but the malformed diagnostic should be corrected before the helper is reused independently.
In `packages/rs-platform-wallet-ffi/src/platform_addresses/fund_from_asset_lock.rs`:
- [SUGGESTION] packages/rs-platform-wallet-ffi/src/platform_addresses/fund_from_asset_lock.rs:365-393: Guard the new C exports against worker panics
Both new external-recipient exports call `block_on_worker` directly here and in the resume sibling. That helper awaits the spawned task with `.expect("tokio worker panicked")`, so a panic in the wallet, SDK, or signer-driven future re-panics inside an `extern "C"` frame. On unwind-enabled builds this aborts the host before it can inspect `PlatformWalletFFIResult`; the panic may also occur after the asset lock was broadcast, leaving an ambiguous funding outcome. Put each export's ordinary Rust body behind panic containment and map a caught worker panic to the existing ambiguous `ErrorTransactionBroadcastUnconfirmed` contract, or change the worker boundary to return a typed join failure. Panic-abort profiles require a separate profile-level decision because `catch_unwind` cannot intercept them.
- [SUGGESTION] packages/rs-platform-wallet-ffi/src/platform_addresses/fund_from_asset_lock.rs:331-334: Unsafe entry points omit required raw-pointer contracts
(existing thread: https://github.com/dashpay/platform/pull/4501#discussion_r3875417778)
The new external funding exports document only the signer handles, but they also construct a slice from `addresses`, write through `out_changeset`, and, on resume, dereference `out_point`. The null checks do not establish the alignment, initialized-element count, allocation bounds, readability, writability, non-overlap, or lifetime required by those operations. Document that `addresses` is non-null and, when its count is nonzero, points to that many aligned and initialized readable entries; that `out_changeset` is aligned, writable for one value, and does not overlap input storage; and that resume's `out_point` is aligned and readable for one initialized value. Both signer handles must remain valid and must not be destroyed concurrently until the synchronously blocking call returns. The ignored fee-strategy pointers need no dereference contract.
In `packages/swift-sdk/Sources/SwiftDashSDK/Persistence/Models/PersistentAssetLock.swift`:
- [BLOCKING] packages/swift-sdk/Sources/SwiftDashSDK/Persistence/Models/PersistentAssetLock.swift:188-193: Adding the property without a schema version makes existing stores unreadable
(existing thread: https://github.com/dashpay/platform/pull/4501#discussion_r3875417768)
`DashSchemaV1.models` and `DashSchemaV2.models` still reference the live `PersistentAssetLock.self` type, so adding `recipientIsExternal` changes both registered schema checksums rather than creating a new schema version. A store written by the pre-PR V2 definition consequently matches neither schema in `DashMigrationPlan`. This was reproduced independently by writing a V2 SwiftData store with the old model, then opening it with V1/V2 schemas that referenced the model after an optional property was added; `ModelContainer` failed with Cocoa error 134504, “Cannot use staged migration with an unknown model version.” Preserve a genuinely frozen pre-change V2 model, add a V3 model containing this property, register a V2-to-V3 lightweight migration, and test against a store generated from the frozen V2 definition.
| funding: AssetLockFunding, | ||
| platform_account_index: u32, | ||
| addresses: BTreeMap<PlatformAddress, Option<Credits>>, | ||
| fee_strategy: AddressFundsFeeStrategy, | ||
| address_signer: &S, | ||
| asset_lock_signer: &AS, | ||
| settings: Option<PutSettings>, |
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🟡 Suggestion: Preserve the existing Rust funding method signature
At the merge base, public PlatformAddressWallet::fund_from_asset_lock accepted an AddressFundsFeeStrategy between addresses and address_signer; this revision removes that argument. Out-of-tree Rust callers therefore fail to compile even though the PR states that existing Rust entry-point signatures remain unchanged. Keep a compatibility method with the old signature that ignores or deprecates the caller-supplied strategy while deriving the safe remainder strategy internally, or introduce an automatically derived method under a new name and retain the old method as a wrapper. This mirrors the C ABI, where the old fee parameters remain present but are ignored.
source: ['codex']
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Fixed in cf1a8ab. You were right that the "ABI not broken" claim only ever covered the C ABI, and the PR body overclaimed by generalising it to Rust.
PlatformAddressWallet::fund_from_asset_lock is back to its merge-base signature, with _fee_strategy: AddressFundsFeeStrategy in its original position between addresses and address_signer. It is accepted and ignored; the strategy actually used is still derived from the recipient map by remainder_fee_strategy. That mirrors the C ABI exactly, where fee_strategy / fee_strategy_count are likewise retained and ignored. The two in-tree FFI call sites pass Vec::new().
I took your first option (keep the old signature) rather than the second (new name, old method as wrapper) deliberately: a rename would have desynchronised the Rust name from the FFI symbol platform_address_wallet_fund_from_asset_lock_signer and the Swift fundFromAssetLock, and broken four intra-doc links, for no compatibility gain. I also did not add #[deprecated] — it is still the only owned-recipient entry point, so the attribute would emit warnings with nothing to migrate to. The retained-but-ignored contract is documented on the parameter instead.
fund_from_asset_lock_external keeps the shorter signature: it is new in this release and has no compatibility debt to carry forward. That asymmetry is now called out in both methods' docs, and the "identical arguments" line in the _external doc table has been corrected.
PR body fixed too.
🤖 Posted autonomously by Claude on behalf of pasta.
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Resolved in cf1a8ab — Preserve the existing Rust funding method signature no longer present.
Auto-resolved by the review system based on the latest commit diff. If you believe this was closed in error, reopen the thread.
| let option = PLATFORM_ADDRESS_WALLET_STORAGE.with_item(handle, |wallet| { | ||
| let wallet_clone = wallet.clone(); | ||
| let wallet_id = wallet.wallet_id(); | ||
| let network = wallet.network(); | ||
| block_on_worker(async move { | ||
| // SAFETY: see the fn-level safety doc — both handles are | ||
| // pinned alive for the duration of this FFI call. | ||
| let address_signer: &VTableSigner = unsafe { &*(signer_addr as *const VTableSigner) }; | ||
| let asset_lock_signer = unsafe { | ||
| MnemonicResolverCoreSigner::new( | ||
| core_signer_addr as *mut MnemonicResolverHandle, | ||
| wallet_id, | ||
| network, | ||
| ) | ||
| }; | ||
| wallet_clone | ||
| .fund_from_asset_lock_external( | ||
| AssetLockFunding::FromWalletBalance { | ||
| amount_duffs, | ||
| account_index, | ||
| }, | ||
| platform_account_index, | ||
| address_map, | ||
| address_signer, | ||
| &asset_lock_signer, | ||
| None, | ||
| ) | ||
| .await | ||
| }) |
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🟡 Suggestion: Guard the new C exports against worker panics
Both new external-recipient exports call block_on_worker directly here and in the resume sibling. That helper awaits the spawned task with .expect("tokio worker panicked"), so a panic in the wallet, SDK, or signer-driven future re-panics inside an extern "C" frame. On unwind-enabled builds this aborts the host before it can inspect PlatformWalletFFIResult; the panic may also occur after the asset lock was broadcast, leaving an ambiguous funding outcome. Put each export's ordinary Rust body behind panic containment and map a caught worker panic to the existing ambiguous ErrorTransactionBroadcastUnconfirmed contract, or change the worker boundary to return a typed join failure. Panic-abort profiles require a separate profile-level decision because catch_unwind cannot intercept them.
source: ['codex']
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Declining this one in this PR — a scope call, not a disagreement. Your mechanism is correct: block_on_worker ends in .expect("tokio worker panicked"), so a panic in the wallet, SDK or signer-driven future re-panics inside the extern "C" frame, and on unwind-enabled profiles that aborts the host before it can read PlatformWalletFFIResult — including after the asset lock may already have been broadcast.
The reason I am leaving it: in rs-platform-wallet-ffi there are 102 direct block_on_worker( call sites and exactly one std::panic::catch_unwind — the catch_panic_to_code helper in shielded_send.rs, reached by two exports there via catch_spend_panic / catch_funding_panic. src/platform_addresses/ contains zero panic guards, including the two pre-existing siblings these new exports were modelled on (platform_address_wallet_fund_from_asset_lock_signer and its resume variant), which are identical in shape and equally exposed. Guarding only the two new external exports would make them the odd ones out while leaving the crate's actual exposure essentially unchanged; guarding it properly is a crate-wide change, plus the profile-level decision you correctly flag — the iOS profiles build panic = "abort", where catch_unwind cannot help at all.
Worth filing separately covering platform_addresses/ as a unit. catch_funding_panic and its ErrorTransactionBroadcastUnconfirmed mapping already look like the right primitive to reuse, so the follow-up should be mostly mechanical.
🤖 Posted autonomously by Claude on behalf of pasta.
| PlatformWalletError::AddressOperation( | ||
| "fund_from_asset_lock requires exactly one remainder (None-amount) recipient to absorb the fee, found none" | ||
| .to_string(), |
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💬 Nitpick: Fix the malformed error text
The defensive no-remainder error contains a long run of spaces between “to” and “absorb.” The current orchestrated flow validates recipient shape first, so this branch is not presently host-reachable, but the malformed diagnostic should be corrected before the helper is reused independently.
| PlatformWalletError::AddressOperation( | |
| "fund_from_asset_lock requires exactly one remainder (None-amount) recipient to absorb the fee, found none" | |
| .to_string(), | |
| PlatformWalletError::AddressOperation( | |
| "fund_from_asset_lock requires exactly one remainder (None-amount) recipient to absorb the fee, found none" | |
| .to_string(), | |
| ) |
source: ['coderabbit']
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Fixed in cf1a8ab — collapsed to a single space, matching your suggested text. Agreed it is unreachable through the orchestrated flow, since validate_recipient_shape runs first and requires exactly one None; that is also why the surrounding comment keeps it a typed error rather than an expect that would panic across the FFI boundary.
🤖 Posted autonomously by Claude on behalf of pasta.
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Resolved in cf1a8ab — Fix the malformed error text no longer present.
Auto-resolved by the review system based on the latest commit diff. If you believe this was closed in error, reopen the thread.
Review round addressed — 3021ddb, cf1a8abFixed (4)
Declined (1)
PR body corrected — it claimed no migration was required and that all existing Rust signatures were unchanged. Both claims were wrong and are now marked as corrected rather than quietly edited. Verification (all baselines held): platform-wallet 773 passed, platform-wallet-ffi 297 passed, drive-abci One honest caveat on the migration fix: the new test writes its source store from 🤖 Posted autonomously by Claude on behalf of pasta. |
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Inline comments:
In
`@packages/swift-sdk/Sources/SwiftDashSDK/Persistence/DashModelContainer.swift`:
- Around line 77-80: Before merging the DashModelContainer.schema change to
DashSchemaV3, perform the documented clean iOS rebuild using the SwiftExampleApp
procedure in BUILD_TROUBLESHOOTING.md and confirm it succeeds.
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packages/rs-platform-wallet-ffi/src/platform_addresses/fund_from_asset_lock.rspackages/rs-platform-wallet/src/wallet/platform_addresses/fund_from_asset_lock.rspackages/swift-sdk/Sources/SwiftDashSDK/Persistence/DashModelContainer.swiftpackages/swift-sdk/Sources/SwiftDashSDK/Persistence/DashSchemaFrozenModels.swiftpackages/swift-sdk/Sources/SwiftDashSDK/Persistence/Models/PersistentAssetLock.swiftpackages/swift-sdk/SwiftTests/SwiftDashSDKTests/DashModelMigrationTests.swift
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| /// Create the schema for all Dash Platform models | ||
| public static var schema: Schema { | ||
| Schema(versionedSchema: DashSchemaV2.self) | ||
| Schema(versionedSchema: DashSchemaV3.self) | ||
| } |
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📐 Maintainability & Code Quality | 🟡 Minor | ⚡ Quick win
🔎 Supported by static analysis
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#!/bin/bash
set -e
printf '%s\n' '--- repository guidance ---'
head -5 /tmp/coderabbit-repo-knowledge/dashpay-platform-41d19c18/*/*.md 2>/dev/null || true
printf '%s\n' '--- changed file and nearby definitions ---'
cat -n packages/swift-sdk/Sources/SwiftDashSDK/Persistence/DashModelContainer.swift | sed -n '1,130p'
printf '%s\n' '--- relevant documented iOS build commands ---'
rg -n -i -C 3 'SwiftExampleApp|clean.*build|build.*clean|xcodebuild|unified framework' \
packages/swift-sdk README.md docs .github 2>/dev/null | head -240
printf '%s\n' '--- diff metadata for the reviewed file ---'
git diff --stat -- packages/swift-sdk/Sources/SwiftDashSDK/Persistence/DashModelContainer.swift
git diff -- packages/swift-sdk/Sources/SwiftDashSDK/Persistence/DashModelContainer.swift | sed -n '1,180p'Repository: dashpay/platform
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set -e
printf '%s\n' '--- worktree and recent commit context ---'
git status --short
git log --oneline -3
printf '%s\n' '--- parent diff for the reviewed file ---'
git diff HEAD^ HEAD -- packages/swift-sdk/Sources/SwiftDashSDK/Persistence/DashModelContainer.swift | sed -n '1,220p'
printf '%s\n' '--- exact build guidance ---'
sed -n '30,46p' packages/swift-sdk/BUILD_TROUBLESHOOTING.md
sed -n '100,115p' packages/swift-sdk/BUILD_GUIDE_FOR_AI.mdRepository: dashpay/platform
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#!/bin/bash
set -e
printf '%s\n' '--- schema commit diff ---'
git diff 3021ddb912c^ 3021ddb912c -- packages/swift-sdk/Sources/SwiftDashSDK/Persistence/DashModelContainer.swift | sed -n '1,260p'
printf '%s\n' '--- schema commit summary ---'
git show --stat --oneline --no-renames 3021ddb912cRepository: dashpay/platform
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Run the documented clean iOS rebuild before merge.
Commit 3021ddb912c changes persistent-store startup to DashSchemaV3. Run the documented SwiftExampleApp clean build from packages/swift-sdk/BUILD_TROUBLESHOOTING.md.
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In `@packages/swift-sdk/Sources/SwiftDashSDK/Persistence/DashModelContainer.swift`
around lines 77 - 80, Before merging the DashModelContainer.schema change to
DashSchemaV3, perform the documented clean iOS rebuild using the SwiftExampleApp
procedure in BUILD_TROUBLESHOOTING.md and confirm it succeeds.
Source: Coding guidelines
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Final validation — Codex/Sol only (Phase 2 disabled)
The SwiftData migration, Rust API compatibility, unsafe-pointer documentation, and malformed diagnostic findings are fixed at the exact head. Two non-blocking items remain: the new external-recipient C exports still let worker panics abort unwind-enabled hosts, and the documented clean iOS application rebuild has not been completed.
Source: Codex general, security-auditor, rust-quality, and FFI-engineer reviewer lanes — gpt-5.6-sol; final verifier backend — grok-4.5. Orchestration-only, not reviewer evidence: openclaw-agent/cliproxy/gpt-5.6-sol.
Validated zero-blocker Codex/Sol precheck evidence was promoted to final because Phase 2 (Sonnet/Opus) is temporarily disabled. This is Codex/Sol-only final validation, not Codex + Sonnet/Opus coverage.
Review provenance
- Codex reviewers:
gpt-5.6-sol— general (completed),gpt-5.6-sol— security-auditor (completed),gpt-5.6-sol— rust-quality (completed),gpt-5.6-sol— ffi-engineer (completed) - Verifier:
gpt-5.6-sol— verifier - Sonnet/Opus: not run (Phase 2 disabled — temporary Codex/Sol-only final)
- Secondary pass: disabled (
temporary_phase2_sonnet_disable)
🟡 1 suggestion(s)
1 carried-forward finding(s) already raised on this PR; not re-posting as new inline comments.
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In `packages/swift-sdk/Sources/SwiftDashSDK/Persistence/DashModelContainer.swift`:
- [SUGGESTION] packages/swift-sdk/Sources/SwiftDashSDK/Persistence/DashModelContainer.swift:77-80: Complete the clean iOS application rebuild
The schema startup path now selects `DashSchemaV3`, and the PR also changes the SwiftExampleApp to write the new property. The PR evidence explicitly states that only a macOS framework slice was built and that SwiftExampleApp was syntax-checked rather than built; a macOS Swift package build does not compile the iOS application target or validate simulator framework linkage. Generate the missing iOS simulator framework slice and run the documented clean SwiftExampleApp build before merging.
In `packages/rs-platform-wallet-ffi/src/platform_addresses/fund_from_asset_lock.rs`:
- [SUGGESTION] packages/rs-platform-wallet-ffi/src/platform_addresses/fund_from_asset_lock.rs:402-426: Guard the new C exports against worker panics
(existing thread: https://github.com/dashpay/platform/pull/4501#discussion_r3877479555)
This export and the resume sibling at lines 554–578 call `block_on_worker` directly. That helper awaits the spawned task with `.expect("tokio worker panicked")`, so a panic in wallet, SDK, proof-processing, or signer-driven work is re-raised inside an `extern "C"` frame. On unwind-enabled builds, Rust cannot unwind through that ABI boundary and aborts the host before it receives `PlatformWalletFFIResult`; because the panic can occur after the asset lock was broadcast, the funding outcome may also be ambiguous. Put the ordinary Rust bodies of both new exports behind panic containment, following the existing funding-specific pattern in `shielded_send.rs`, or change the worker boundary to return a typed join failure. The iOS `panic = "abort"` profiles remain a separate profile-level limitation because `catch_unwind` cannot intercept them.
| /// Create the schema for all Dash Platform models | ||
| public static var schema: Schema { | ||
| Schema(versionedSchema: DashSchemaV2.self) | ||
| Schema(versionedSchema: DashSchemaV3.self) | ||
| } |
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🟡 Suggestion: Complete the clean iOS application rebuild
The schema startup path now selects DashSchemaV3, and the PR also changes the SwiftExampleApp to write the new property. The PR evidence explicitly states that only a macOS framework slice was built and that SwiftExampleApp was syntax-checked rather than built; a macOS Swift package build does not compile the iOS application target or validate simulator framework linkage. Generate the missing iOS simulator framework slice and run the documented clean SwiftExampleApp build before merging.
source: ['coderabbit']
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Reviewed current head cf1a8ab6f3. No blocking findings; the previous SwiftData migration and public Rust API compatibility issues are fixed. Rust/Swift/Kotlin checks pass, and patch coverage passes.
Non-blocking before merge:
- Update the branch from the latest
v4.2-devand rerun CI. - Reconcile the red global
codecov/projectstatus (the patch check itself is green). - Refresh the PR description: fee/output selection is now derived Rust-side, the retained FFI fee-strategy arguments are compatibility-only, and the current CI does build/test SwiftExampleApp.
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Automated deep review (8 finder angles, adversarially verified). 9 findings below; every candidate was checked against the PR head and against existing review threads, and 0 were dropped as unconfirmed or duplicates of existing threads.
🤖 Posted autonomously by Claude on behalf of pasta.
| platform_account_index: u32, | ||
| addresses: *const FundingAddressEntryFFI, | ||
| addresses_count: usize, | ||
| _fee_strategy: *const FeeStrategyStepFFI, |
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🟡 Suggestion: New external FFI symbols carry dead fee_strategy params with no ABI debt to justify them
platform_address_wallet_fund_from_asset_lock_external_signer and its resume sibling are brand-new exports, yet both take _fee_strategy / _fee_strategy_count documented as "Retained for ABI compatibility only" — a rationale that cannot apply to symbols introduced in this PR. The Rust layer draws the opposite conclusion for the identical situation: fund_from_asset_lock_external "has no such compatibility obligation (it is new in this release) and therefore omits the argument". A silently ignored, semantically meaningful parameter is the same failure mode this PR set out to kill (a caller believing its fee strategy is honored). Suggest dropping both params from the two new symbols; the only callers are the Swift wrappers, which already pass nil, 0. (The existing "Preserve the existing Rust funding method signature" thread argues for keeping the vestige on the pre-existing method — that is compatible with not adding it to symbols that never shipped.)
🤖 Posted autonomously by Claude on behalf of pasta.
| /// dereferenced. | ||
| #[no_mangle] | ||
| #[allow(clippy::too_many_arguments)] | ||
| pub unsafe extern "C" fn platform_address_wallet_fund_from_asset_lock_external_signer( |
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🟡 Suggestion: Four near-identical unsafe FFI bodies — extract the shared orchestration
The fund/resume × own/external quartet repeats the sentinel-write ordering, pointer checks, handle→usize round-trip, worker block, and signer construction (~60 lines each). One layer down, this same PR extracted fund_from_asset_lock_inner for exactly this duplication, and the file itself notes only the C ABI can't take a Rust enum — a private helper below the extern "C" surface can. A shared private unsafe fn taking AssetLockFunding plus an external/own selector would reduce the four exports to thin argument-decoding wrappers, so the next fix to the sentinel/SAFETY dance lands in one place instead of four.
🤖 Posted autonomously by Claude on behalf of pasta.
| /// no local row, so it does not appear here; query its balance to | ||
| /// observe it. | ||
| @discardableResult | ||
| public func fundFromAssetLockExternal( |
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🟡 Suggestion: Four copies of the load-bearing signer-pinning body
fundFromAssetLock, resumeFundFromAssetLock, and the two new external variants are near-identical except for the preflight and the FFI symbol invoked. Each copy carries the withExtendedLifetime((signer, coreSigner)) pattern this file's own comments warn is UAF-critical — a fifth variant, or a well-meaning "simplification" of one copy, reintroduces a mid-FFI-call resolver drop. A single private helper (preflight + recipients + a closure receiving the marshalled buffer and inout changeset, returning the PlatformWalletFFIResult) would keep the pinning and Task-detach choreography in exactly one place.
🤖 Posted autonomously by Claude on behalf of pasta.
| /// all, so it is a caller mistake — [`fundFromAssetLock`] is the | ||
| /// entry point for pure self-funding, and it validates the | ||
| /// destination properly. | ||
| static func fundFromAssetLockExternalPreflight( |
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🟡 Suggestion: The "at least one explicit-amount recipient" rule exists only in the Swift binding
Rust's validate_recipient_map accepts a remainder-only map under RecipientOwnership::ExternalExplicitOutputs — the call degenerates into self-funding through the relaxed-validation path. Only this Swift preflight enforces the rule, so future JNI or direct C callers of ..._external_signer won't get it. swift-sdk/CLAUDE.md's own guidance is that decisions like this live in Rust ("move the decision to Rust... add the helper in the Rust library first"). Suggest enforcing it in fund_from_asset_lock_external's pre-flight (e.g. in validate_recipient_map when ownership is ExternalExplicitOutputs) and keeping this Swift check as the synchronous fast-fail mirror.
🤖 Posted autonomously by Claude on behalf of pasta.
| recipients: [FundFromAssetLockRecipient] | ||
| ) throws { | ||
| try Self.fundFromAssetLockPreflight(recipients: recipients) | ||
| guard recipients.contains(where: { $0.credits != nil }) else { |
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🟡 Suggestion: credits: 0 passes every preflight but is rejected by Platform only after L1 funds are locked
contains(where: { $0.credits != nil }) counts a zero-credit entry as an explicit-amount recipient, and neither this preflight nor Rust's validate_recipient_shape rejects Some(0). Platform does reject it — check_tx refuses zero-amount outputs (test_zero_output_amount in rs-drive-abci) — but only after the Core asset-lock tx has been broadcast. So a UI parse bug yielding 0 sails through preflight, L1 funds get locked, and the failure surfaces at ST submission as a stuck lock in the resumable list instead of a synchronous error. Validating credits > 0 in validate_recipient_shape (pre-broadcast, shared by every binding) closes this for both funding modes.
🤖 Posted autonomously by Claude on behalf of pasta.
| /// this exercises the real cross-version path rather than trivially | ||
| /// round-tripping today's model. | ||
| @MainActor | ||
| func testV2AssetLockStoreMigratesToV3AndBackfillsRecipientIsExternal() throws { |
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🟡 Suggestion: The migration regression test is self-referential — it cannot catch the next schema drift
This test builds its "V2 store" from the current build's DashSchemaV2, whose entity list still references ~33 live model classes, then reopens with the current V3 — both sides are generated from the same source. If any live model gains a property tomorrow, the test's V2 store silently grows it too and the test stays green, while real shipped-V2 stores fail with Cocoa 134504 — recreating exactly the defect this PR diagnosed. DashSchemaFrozenModels.swift acknowledges the latent defect but deliberately defers freezing the other models; a cheap guard that doesn't require freezing all 33 is to pin the expected V2 shape as constants in this test (per-entity attribute lists, or the schema checksum) or to commit a real V2-era .store fixture and assert it opens.
🤖 Posted autonomously by Claude on behalf of pasta.
| /// the fee. | ||
| /// | ||
| /// Sister to [`platform_address_wallet_fund_from_asset_lock_signer`]: | ||
| /// identical parameters, identical marshalling, identical orchestration. |
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💬 Nitpick: Comment in decode_funding_addresses claims a Swift-side dedupe that doesn't exist
The duplicate-rejection comment just above (around lines 290–294) says "The Swift wrapper's fundFromAssetLockPreflight already dedupes client-side" — it doesn't: the preflight checks emptiness, remainder cardinality, address type, and hash length only. Pre-existing text, but it invites someone to treat the FFI duplicate check as redundant and remove it later. Worth rewording while this file is being touched.
🤖 Posted autonomously by Claude on behalf of pasta.
| index: remainder, | ||
| }]; | ||
| Some((entries, fee_rows)) | ||
| // The "exactly one remainder recipient" rule is enforced by |
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💬 Nitpick: No JNI counterpart for the new external-funding entry points
Swift gained fundFromAssetLockExternal / resumeFundFromAssetLockExternal, but no JNI bridges for the two new ..._external_signer exports were added, and kotlin-sdk/PARITY.md's funding rows don't note the gap. A one-line note there (or in the PR description) marking the Kotlin side as intentionally deferred would keep the parity ledger honest.
🤖 Posted autonomously by Claude on behalf of pasta.
| /// what `PersistentAssetLock.recipientPlatformAddressHash` / | ||
| /// `recipientIsExternal` exist for on the Swift side). | ||
| /// | ||
| /// ## `fee_strategy` / `fee_strategy_count` are IGNORED |
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💬 Nitpick: The fee-strategy rationale is pasted six-plus times
The ~14-line "fee_strategy is IGNORED" essay appears verbatim on all four FFI entry points, with paraphrases in rs-platform-wallet, the JNI decoder, and the Swift wrapper; this function's doc runs ~80 lines, and siblings include a ~46-line doc on a Bool? property and a ~46-line doc on a 12-line delegating method. Suggest keeping the full rationale once — on remainder_fee_strategy, where the behavior lives — and pointing at it with a one-liner everywhere else, so the next behavioral change doesn't have to chase down seven copies.
🤖 Posted autonomously by Claude on behalf of pasta.
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…rty recipients Adds a sibling of fund_from_asset_lock whose explicit-amount outputs may be any valid P2PKH platform address, not just members of the sender's managed platform account. The single remainder (None) output must still be owned: the asset lock is consumed in full, so that bucket is the change, and a caller bug there would leak the whole lock value to a stranger rather than the intended payment. The existing entry point is deliberately left strict. Relaxing it in place would silently turn today's 'typo'd address -> typed error before broadcast' into 'typo'd address -> credits irrecoverably delivered to a stranger' for every current caller. The recipient pre-flight is factored into a pure, wallet-free validate_recipient_map generic over an ownership oracle, so the rules are unit-testable without standing up a PlatformAddressWallet. No resume variant is needed at this layer: resuming is AssetLockFunding::FromExistingAssetLock, a value of the funding parameter. Reconciliation and persistence need no changes. reconcile_address_infos_with_persistence already treats a partial resolve as normal, and the new provider test pins the mixed own+external case: only the sender's remainder output resolves and enters the committed seed, resolved > 0 so the normal apply-and-persist path runs and persisted stays true (which is what gates consume_asset_lock). Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
…ng entry points Adds platform_address_wallet_fund_from_asset_lock_external_signer and platform_address_wallet_resume_fund_from_asset_lock_external_signer alongside the existing pair. Same parameters, same marshalling, same FundingAddressEntryFFI / decode_funding_addresses / fee-strategy parsing; the existing symbols' ABI is untouched. cbindgen picks the new symbols up automatically. Resume takes the recipients as caller-supplied parameters rather than recovering them from persisted state, matching the shielded resume entry point: Rust never learns the destination of an address-funding asset lock, only the outpoint, its status and its proof. The host owns round-tripping the intended recipient. Adds tests pinning the contract the SDKs' fee-strategy computation relies on: ReduceOutput(index) is positional over the outputs BTreeMap's lexicographic key order, so a canonically sorted FFI array makes array position and consensus output index the same number. Without that, adding a recipient can silently re-target which output pays the fee -- and with a third-party payee in the set, the payee's explicit amount would absorb the fee instead of the sender's change. Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
…and tests Adds fundFromAssetLockExternal / resumeFundFromAssetLockExternal as siblings of the existing pair, reusing FundFromAssetLockRecipient unchanged -- externality is a property of which function you call, matching the shielded funding surface, not a per-row flag. The external preflight keeps every rule of the base preflight (exactly one remainder, P2PKH only, 20-byte hashes) and adds one: at least one explicit-amount recipient, since a remainder-only request pays nobody externally. Fixes the fee-strategy remainder index while centralising it. ReduceOutput(index) is resolved by consensus against the outputs BTreeMap's lexicographic key order, but the index was computed from the caller's array order, so it named the wrong output whenever the remainder was not first lexicographically. Recipients are now sorted into the canonical order (P2PKH before P2SH, then hash bytes) before marshalling, which makes array position and consensus index the same number. Previously this only misallocated the fee among the user's own addresses; with a third-party payee it would have charged the fee to the payee's output. PersistentAssetLock gains recipientIsExternal: Bool? in the funding-type-4 field family. Consumers read a populated recipient hash as 'this was my own top-up', so without a discriminator an outgoing external send would be misclassified as an incoming credit. Adding an optional property to an existing @model needs no new MigrationStage and the model list is unchanged, so DashMigrationPlan is untouched. Adds a drive-abci consensus test documenting that an unrelated recipient is valid at the protocol layer (and that the fee lands on the remainder), Swift unit tests for the ordering and preflight rules, and an Alice-Core-to-Bob-Platform integration test. Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
…he FFI boundary The ReduceOutput(i) fee step is positional and consensus resolves i against the transition's outputs BTreeMap key order (PlatformAddress's derived Ord), not against the caller's array order. Callers holding a flat recipient array were therefore required to reimplement a consensus ordering rule to name the fee-paying output. fund_from_asset_lock now derives the step itself, in remainder_fee_strategy, from the same map that becomes the outputs map. Fixes a latent bug in rs-unified-sdk-jni: decode_funding_recipients derived the index from the recipient blob's row position, so the fee was charged to an explicit-amount payee whenever the remainder recipient did not also sort first lexicographically. With a third-party payee in the set that is a real misallocation. Swift's canonicallyOrderedRecipients / remainderStepIndex are removed; marshalRecipients is now pure marshalling. The Swift result is unchanged (its two-key sort reproduced the BTreeMap order exactly), so this is behaviour-preserving on that path. The C ABI is unchanged: fee_strategy / fee_strategy_count remain on all four entry points and are now documented as ignored, so existing out-of-tree callers keep linking and are fixed without changing. Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
Adding recipientIsExternal to the live PersistentAssetLock mutated the checksums of the already-registered V1 and V2 schemas in place, because both DashSchemaV1.models and DashSchemaV2.models pointed at the live type. A store written by the V2 binary then matched no schema in DashMigrationPlan.schemas, so DashModelContainer.create/createInMemory would fail to open it with Cocoa error 134504 instead of migrating it. Freeze the pre-change shape as the nested DashSchemaV1.PersistentAssetLock, point V1 and V2 at it, register DashSchemaV3 carrying the live models, and add a lightweight V2 to V3 stage. V1 and V2 checksums are now exactly what they were at the merge base and V1 to V2 remains add-PersistentTrackedMasternode and nothing else. Only PersistentAssetLock is frozen; the other 33 models are still referenced live from V1/V2 and carry the same latent defect. That is pre-existing and deliberately out of scope here, and is called out in DashSchemaFrozenModels.swift. Also corrects the inline justification on recipientIsExternal, which claimed the model LIST being unchanged left DashMigrationPlan untouched. Schema identity is per-model checksums, not list identity. Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
…ment The layering refactor dropped AddressFundsFeeStrategy from the public Rust signature, so out-of-tree Rust callers stopped compiling even though the PR claimed existing entry points kept their signatures. Restore the merge-base signature and ignore the argument, deriving the remainder strategy internally via remainder_fee_strategy. This mirrors the C ABI, where fee_strategy / fee_strategy_count are likewise still accepted and ignored. fund_from_asset_lock_external keeps the shorter signature: it is new in this release and has no source-compatibility debt to carry forward. Also completes the # Safety sections on the two new C exports. They previously documented only the signer handles while the bodies also slice addresses, write through out_changeset and (on resume) read out_point. The fee-strategy pointers are documented as never read rather than given a dereference contract. Also removes a long run of spaces from the defensive no-remainder error string in remainder_fee_strategy. Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
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Issue being fixed or feature implemented
Today a Core-chain asset lock can only fund Platform addresses that belong to the sender's own managed wallet account. This adds the ability to fund an external third party's Platform address (Alice pays Bob) from a Core asset lock, with the sender's own change address absorbing the remainder and the fee.
The capability already exists at the protocol layer — the only blocker was a wallet-side pre-flight.
No consensus / rs-dpp / rs-drive-abci production changes are needed. Consensus never validates output ownership:
AddressFundingFromAssetLockTransitiontreats its outputs map as opaque destinations, and the pre-existingtest_simple_asset_lock_funding_to_single_addressalready funds arbitrary unrelated addresses. This PR adds a drive-abci test that documents that property explicitly rather than changing any validator.rs-sdk needs no changes either.
packages/rs-sdk/src/platform/transition/top_up_address.rsis ownership-agnostic — it only does set-equality checks between the requested recipients and the proof-attestedAddressInfos, which holds identically whether an output is ours or a stranger's.What was done?
packages/rs-platform-walletPlatformAddressWallet::fund_from_asset_lock_external, a sibling offund_from_asset_lock. Same signature, same pipeline — both now delegate to a sharedfund_from_asset_lock_innerwhose single point of divergence is aRecipientOwnershipmode.Some(credits)) outputs may be any valid P2PKH platform address.None) output must still be owned byplatform_account_index.fund_from_asset_lockis deliberately not relaxed. For every current caller a mistyped recipient is caught today by the membership check; relaxing it in place would silently convert "typo'd address → typed error before anything is broadcast" into "typo'd address → asset-lock credits irrecoverably delivered to a stranger". Opting in by function name confines that failure mode to callers that mean to pay someone else.Nonebucket receives everything left after the explicit outputs and the fee — i.e. the change. Sending change to a stranger is never the intent, and a caller bug that mixed up which entry was the remainder would leak the entire lock value rather than the intended payment. Consensus does not care; this is purely a wallet-level safety rail, and the new drive-abci test is the standing evidence of that distinction.validate_recipient_mapgeneric over an ownership oracle, so the rules are unit-testable without constructing aPlatformAddressWallet. Shape checks (validate_recipient_shape) are shared by both modes.AssetLockFunding::FromExistingAssetLock, a value of thefundingparameter, so both public entry points already cover fresh-build and resume. (The FFI does expose distinct resume symbols, because a C ABI cannot take a Rust enum.)Reconciliation / persistence: no changes needed
reconcile_address_infos_with_persistence(packages/rs-platform-wallet/src/wallet/platform_addresses/wallet.rs:382-392) already tolerates third-party recipients: it handlesoutcome.resolved == 0with a warning whose text literally reads "Expected when every address belongs to a third party", and still returnspersisted = truesoconsume_asset_lockfires correctly.validate_address_infos_completeis proof-level and ownership-agnostic, so the third party's output is still proven.The mixed own+external case (the one this feature actually produces) is now pinned by a new provider test: only the sender's remainder output resolves and enters the committed seed,
resolved > 0so the normal apply-and-persist path runs, and the stranger's address never reaches disk.packages/rs-platform-wallet-ffiplatform_address_wallet_fund_from_asset_lock_external_signerplatform_address_wallet_resume_fund_from_asset_lock_external_signerBoth reuse
FundingAddressEntryFFI,decode_funding_addressesand the existing fee-strategy parsing verbatim. The existing symbols' ABI is untouched; the P2SH rejection inTryFrom<PlatformAddressFFI> for PlatformAddressis unchanged.src/platform_addresses/mod.rsalready glob-re-exports the module, so no wiring change was needed, and cbindgen picks the new symbols up automatically (verified in the generated header).Resume takes the recipients as caller-supplied parameters rather than recovering them from persisted state, matching the shielded resume entry point: Rust never learns the destination of an address-funding asset lock — only the outpoint, its status and its proof. The consequence is documented on the function: resuming with a different recipient set pays the new set, because the asset lock is a bearer input, not a commitment to a destination.
packages/swift-sdkfundFromAssetLockExternal(...)/resumeFundFromAssetLockExternal(...)as siblings of the existing pair.FundFromAssetLockRecipientis reused unchanged — noisExternalflag. Externality is a property of which function you call, matching the shielded side, which keeps "am I allowed to pay a stranger?" a single auditable decision at the call site.fundFromAssetLockExternalPreflightkeeps every rule of the base preflight (exactly one remainder, P2PKH only, 20-byte hashes) and adds one: at least one explicit-amount recipient, since a remainder-only request pays nobody externally andfundFromAssetLockis the right entry point for pure self-funding.ReduceOutput(remainderIndex)step is still computed Swift-side from the recipient array (callers never pass positional indices), but it is now computed over the canonical order rather than the caller's array order, and marshalling emits the array in that same order. Consensus resolvesReduceOutput(i)against the outputsBTreeMap's lexicographic key order (PlatformAddress's derivedOrd: P2PKH before P2SH, then hash bytes) — so the previous "position in the caller's array" computation named the wrong output whenever the remainder was not first lexicographically. Sorting before marshalling makes array position and consensus index the same number by construction. The logic is centralised incanonicallyOrderedRecipients/remainderStepIndex/marshalFundingRequestand shared by all four entry points.PersistentAssetLockgainsrecipientIsExternal: Bool?in the funding-type-4 field family, following the file's "one typed field-family per funding type" convention and doc style. Consumers currently read a populated recipient hash as "this was my own top-up" (dashwallet-iosPlatformAddressActivityStore.matchesOwnAssetLockTopUp), so without a discriminator an external send would be misclassified as an incoming own credit. This DOES require a schema version (corrected after review — an earlier revision of this PR claimed it did not). AVersionedSchemaidentifies a store by the checksum of the entities it declares, so adding the property to the live model mutated the checksums of the already-registered V1 and V2 schemas in place; a store written by the V2 binary then matched no schema inDashMigrationPlan.schemasandModelContainer(for:migrationPlan:configurations:)would fail to open it with Cocoa error 134504 rather than migrating it. The model list being unchanged is irrelevant. So V1 and V2 now reference a frozen nested copy of the pre-change model (DashSchemaV1.PersistentAssetLock, in the newPersistence/DashSchemaFrozenModels.swift), a newDashSchemaV3carries the live models, and a lightweight V2 -> V3 stage migrates existing stores. OnlyPersistentAssetLockis frozen; the other 33 models are still referenced live from V1/V2 and retain the same latent defect, which is pre-existing and out of scope here.SwiftExampleApp's own-funding screen now stampsrecipientIsExternal = falsealongside the hash it already wrote, so in-repo rows are never ambiguous.How Has This Been Tested?
Executed, all passing:
cargo test -p platform-wallet --libcargo test -p platform-wallet-ffi --libcargo test -p drive-abci address_funding_from_asset_locktest_asset_lock_funding_to_unrelated_third_party_address)swift test --filter FundFromAssetLockRecipientTests(macOS slice)cargo check/cargo clippyonplatform-wallet+platform-wallet-ffi(--tests)cargo fmtswift build --target SwiftDashSDK+swift build --build-tests-warnings-as-errorssettingNew test coverage:
fund_from_asset_lock.rs) — there were previously none forvalidate_recipient_addresses. Covers: all-owned (legacy fn still rejects an external explicit recipient), external explicit + owned remainder (accepted), several external recipients (accepted), external remainder (rejected, with the remainder-specific message), nothing owned (rejected), P2SH in both modes, zero remainders, two remainders, empty map, and the BTreeMap remainder-index mapping.provider.rs) — patterned on the existingcommit_reconciliation_pool_fallback_skips_untracked_account.test_simple_asset_lock_funding_to_single_addresswith an explicit-amount unrelated recipient plus a remainder output, and asserts the third party is credited exactly the requested amount while the sender's change absorbs the fee.platform-walletmap ordering,platform-wallet-ffidecode round-trip) and in Swift (FundFromAssetLockRecipientTests), each pinning that the index tracks lexicographic position when the remainder is not first in the caller's list, and its mirror image.Authored but NOT executed:
CoreToPlatformIntegrationTests.testFundExternalRecipientFromCoreAssetLock— the Alice-Core → Bob-Platform end-to-end test. It follows the file's existing conventions and compiles cleanly, but requires a running local dashmate devnet (RUN_INTEGRATION_TESTS=1), which is not available in the authoring environment. It asserts Bob's credited balance from Bob's own wallet after a platform-address sync, that Alice's returned changeset carries only her change address, and that noPersistentPlatformAddressrow for Bob is written under Alice's wallet id.SwiftExampleAppwas not built. TheDashSDKFFI.xcframeworkwas built for the macOS slice only (enough to compile and test the Swift package); the iOS-simulator slice needed by the example app was not produced. The example-app change is a single property assignment and was syntax-checked withswiftc -parse, nothing more.packages/rs-unified-sdk-jni) was intentionally not extended with the new entry points — see Deferred below.Breaking Changes
None to any public API or FFI ABI. Existing Rust, FFI and Swift entry points keep their exact signatures.
(Corrected after review: an intermediate revision of this branch did drop the
AddressFundsFeeStrategyargument fromPlatformAddressWallet::fund_from_asset_lock, which would have broken out-of-tree Rust callers. The argument has since been restored and is accepted and ignored, mirroring the C ABI, wherefee_strategy/fee_strategy_countare also still accepted and ignored.fund_from_asset_lock_externalomits it — it is new here and has no compatibility debt.)One behavioural change worth calling out: on the Swift side,
fundFromAssetLock/resumeFundFromAssetLocknow target the fee at the true remainder output. Previously, a multi-recipient call whose remainder was not first lexicographically charged the fee to a different output. Because every recipient in that flow belonged to the caller, the old behaviour only misallocated the fee among the user's own addresses — no funds were ever at risk — but it had to be corrected before a third-party payee could be in the set.Deliberately deferred:
TryFrom<PlatformAddressFFI> for PlatformAddressrejects the P2SH discriminant outright, so lifting it in the wallet alone would not make P2SH reachable from the SDKs.platform_address_wallet_fund_from_asset_lock_signerbinding.dashwallet-iosPR will follow that persists the recipient (hash, type and the newrecipientIsExternaldiscriminator) and adds the.coreToPlatformsend route. This PR only adds the model field; it does not change persistence behaviour.Checklist:
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