feat(qt): DashPay opt-in, privacy gating and Platform network checks - #7671
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…ibrary native_rust stages the prebuilt Rust 1.98.1 compiler and Cargo (the toolchain dashpay/platform pins) for the four supported build hosts, patchelf'd with fix-elf-interpreter.sh when run inside a Guix environment. rust_stdlib stages the standard library for the host, for every default Guix host. Linux hosts use the glibc (-unknown-linux-gnu) standard library, the one Rust supports for linking into a glibc program. Its libc imports are unversioned and bind to the glibc the program is linked against; every symbol it requires unconditionally is in glibc 2.31 on all five Linux architectures. contrib/devtools/update-rust-hashes.py refreshes the pins and requires every download to match the .sha256 file static.rust-lang.org publishes; --check compares the pins with those files. Nothing uses the packages yet. Co-Authored-By: Claude Opus 5.5 (1M context) <noreply@anthropic.com>
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Included review availability: This review used your included allowance. Your plan provides up to 4 included reviews per hour; 2 remain after this review. WalkthroughAdds optional DashPay support to the Qt wallet. The change adds the Platform client, wallet signing and record operations, Rust and C++ dependency builds, and per-wallet opt-in and service controls. It also adds Platform network and chain checks, test coverage, and handling for wallet transaction broadcast rejections in the Qt send flow. Priority: ➖ Normal Estimated code review effort: 5 (Critical) | ~90 minutes Sequence Diagram(s)sequenceDiagram
actor WalletOwner
participant PlatformPage
participant PlatformService
participant NodeImpl
participant SdkClient
WalletOwner->>PlatformPage: Confirm DashPay opt-in
PlatformPage->>PlatformService: Create service after availability checks
PlatformService->>NodeImpl: Collect network and Platform context
PlatformService->>SdkClient: Update endpoints, quorum keys, and ChainLock height
Possibly related PRs
Merge Risk: 🔵 Low · up to The DashPay opt-in and disable flow looks sound. A previously raised concern about reporting failed record wipes appears to be addressed, but it has not been confirmed at the current head. This is mergeable, with only minor awareness needed about the incomplete cross-layer review of the stacked PR. Security Architecture ReviewSecurity architecture risk: 🟡 Moderate · up to DashPay is off by default and checks wallet and network prerequisites before starting. However, a failed opt-out can leave the wallet enabled and recreate its service, and the new asset-lock API does not require the supplied credit key to belong to the funding wallet. The current GUI does not show an asset-lock submission path, which limits the demonstrated exposure. Retained concerns
Security review detailsSecurity Blast Radius
Security Findings and Attack Paths
Trust Boundaries and Controls
Resilience and Maintainability Implications
Hardening Proposals
🚥 Pre-merge checks | ✅ 4 | ❌ 1❌ Failed checks (1 warning)
✅ Passed checks (4 passed)
Full details: Docstring CoverageExplanation Docstring coverage is 22.09% which is insufficient. The required threshold is 80.00%. Docstring coverage is scoped to functions touched by this diff. Analyzed 335 functions across 53 files. (2 skipped: 2 unsupported.)
✨ Finishing Touches🧪 Generate unit tests (beta)
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Potential PR merge conflictsThis is advisory only. It does not block CI, but it marks PRs that will likely need a rebase depending on merge order. If this PR merges firstThese open PRs will likely need a rebase:
If these PRs merge firstThis PR will likely need a rebase:
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…M_GUI knob PLATFORM_GUI=1 adds native_rust, rust_stdlib, prebuilt protoc 32.0 (native_protobuf) and platform_cxx, which builds packages/rs-platform-cxx of dashpay/platform and installs its static library and cxx headers. The knob follows MULTIPROCESS: default package sets are unchanged, and config.site enables --enable-platform-gui. Combining it with NO_QT or NO_WALLET is an error, since the bindings are for the GUI wallet only. platform_cxx is built with cargo build --frozen --offline from two sha256-pinned archives, the Platform source tarball at the pinned commit and a crate bundle; depends never vendors crates. Both archives must be on the depends sources mirror before this is merged. contrib/devtools/platform-bundle.sh produces the bundle reproducibly from a commit: workspace trimmed to the crate, Cargo.lock pruned to it, cargo vendor --locked --versioned-dirs, crates outside the build closure reduced to their manifests, the Tenderdash source archive for the tag the lock pins together with TENDERDASH_COMMITISH set to that tag, and tar and gzip with fixed metadata. It prints the pins for platform_cxx.mk. Only the bundle's Cargo configuration is used: Cargo runs from / with --config, its home is private, and variables that would change the build (wrappers, CARGO_BUILD_*, CARGO_PROFILE_*, CARGO_TARGET_*, per-target compiler overrides, TENDERDASH_*) are unset. The release profile is pinned to Platform's (Cargo's default, panic=unwind). The depends host compiler links the crate and compiles its C and C++, the build compiler links build scripts and proc macros, and the build directory is remapped out of the objects. The build refuses a dependency graph that reaches the trusted context provider, an HTTP client or OpenSSL. Co-Authored-By: Claude Opus 5.5 (1M context) <noreply@anthropic.com>
The option (default no) requires the GUI and the wallet, and checks that a program using the Dash Platform CXX bindings links: it includes dash/platform/ffi.h and creates and shuts down a platform_ffi::PlatformClient. PLATFORM_CXX_LIBS names the bindings library and defaults to -ldash_platform_cxx from the depends prefix; the system libraries rustc reports for the archive (less the C++ runtime) are always appended to it. The option defines ENABLE_PLATFORM_GUI and the automake conditional of the same name, under which PLATFORM_CXX_LIBS is added to the link of dash-qt, test_dash and test_dash-qt only; dashd and the other binaries never link it, and nothing references the bindings yet. Co-Authored-By: Claude Opus 5.5 (1M context) <noreply@anthropic.com>
A dash-qt built with --enable-platform-gui for Windows imports: - CRYPT32, ncrypt and Secur32: the rustls platform verifier reads the system trust store through schannel; - ntdll: the Rust standard library and mio; - bcryptprimitives (ProcessPrng) and api-ms-win-core-synch-l1-2-0 (WaitOnAddress): raw-dylib imports of the Rust standard library. Only dash-qt with the option imports them; the list is shared by every binary, so check-no-rust.py keeps the others free of Rust instead. windows-sys names its DLLs in lowercase, so the check now compares DLL names case-insensitively, as Windows does. Co-Authored-By: Claude Opus 5.5 (1M context) <noreply@anthropic.com>
The job builds depends with PLATFORM_GUI=1 and dash-qt with --enable-platform-gui (enabled through config.site) and runs the unit tests. contrib/devtools/check-no-rust.py then fails the build if dashd, dash-cli, dash-tx, dash-wallet or the fuzz binary contain cxx bridge, Rust runtime or Rust standard library symbols, or no symbols at all: the bindings are for dash-qt only. Co-Authored-By: Claude Opus 5.5 (1M context) <noreply@anthropic.com>
Expose the Tenderdash chain id of each network's Dash Platform through CChainParams::PlatformChainId(), beside the existing Platform ports and bech32 HRP: "evo1" on mainnet and "dash-testnet-51" on testnet, matching the genesis chain_id in dashmate's mainnet and testnet config defaults. Devnet and regtest have no canonical Platform chain and carry an empty id. This is a network parameter a Platform client verifies signed response metadata against; it is not a consensus rule, so it stays out of Consensus::Params. No new command-line options are added. Co-Authored-By: Claude Opus 5.5 (1M context) <noreply@anthropic.com>
…C seams FriendshipXpub carries the BIP32 parent fingerprint of the friendship leaf, so CompactXpubBytes() yields the 69-byte DIP-15 compact form (parentFingerprint || chainCode || pubKey) that contactRequest encryptedPublicKey and the accountReference MAC are computed over. The fingerprint is that of the key one step above the final 256-bit derivation, as rust-dashcore's key-wallet reports it. interfaces::Wallet::platformAccountReferenceMac computes HMAC-SHA256 keyed by the derived ENCRYPTION private key over the compact xpub, matching rs-platform-encryption's calculate_account_reference; only the 32-byte MAC leaves the wallet and the ASK28 masking stays with the caller. It is purpose-specific rather than a generic keyed-hash oracle. Both it and platformECDHSecret refuse key index 0, the identity MASTER key, which DIP-15 never uses for either operation. Tests: ECDH known-answer vector ported from rs-platform-encryption, parent fingerprint, compact xpub, accountReference MAC and DIP-15 payment-address vectors generated with key-wallet e4208c90786a and rs-platform-encryption from the DIP-14 test seed, and MASTER-key refusals. Co-Authored-By: Claude Opus 5.5 (1M context) <noreply@anthropic.com>
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Review comments at @src/qt/platform/platformpage.cpp:
- Around line 304-306: Update disableDashPay to check the result of
PlatformService::WipeRecords and, on failure, show a warning consistent with
enableDashPay’s save-failure handling. Preserve the existing refresh flow.
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.github/workflows/build.yml.gitignoreci/dash/build_src.shci/dash/matrix.shci/test/00_setup_env_native_platform_gui.shconfigure.accontrib/devtools/README.mdcontrib/devtools/check-no-rust.pycontrib/devtools/platform-bundle.shcontrib/devtools/update-rust-hashes.pycontrib/guix/symbol-check.pydepends/Makefiledepends/README.mddepends/config.site.independs/packages/native_protobuf.mkdepends/packages/native_rust.mkdepends/packages/packages.mkdepends/packages/platform_cxx.mkdepends/packages/rust_stdlib.mkdepends/patches/native_rust/fix-elf-interpreter.shdepends/patches/platform_cxx/build-linker.shdepends/patches/platform_cxx/rustc-linker.shdoc/README.mddoc/dependencies.mddoc/platform-gui.mdsrc/Makefile.amsrc/Makefile.qt.includesrc/Makefile.qttest.includesrc/Makefile.test.includesrc/Makefile.test_util.includesrc/chainparams.cppsrc/chainparams.hsrc/interfaces/node.hsrc/interfaces/wallet.hsrc/logging.cppsrc/logging.hsrc/node/interfaces.cppsrc/platform/client.cppsrc/platform/client.hsrc/platform/helpers.cppsrc/platform/helpers.hsrc/platform/marshal.cppsrc/platform/marshal.hsrc/platform/signer.cppsrc/platform/signer.hsrc/platform/st.cppsrc/platform/st.hsrc/platform/types.hsrc/platform/walletrecords.cppsrc/platform/walletrecords.hsrc/qt/bitcoin.cppsrc/qt/bitcoingui.cppsrc/qt/bitcoingui.hsrc/qt/forms/optionsdialog.uisrc/qt/optionsdialog.cppsrc/qt/optionsdialog.hsrc/qt/optionsmodel.cppsrc/qt/optionsmodel.hsrc/qt/platform/dashpayoptionswidget.cppsrc/qt/platform/dashpayoptionswidget.hsrc/qt/platform/platformoptindialog.cppsrc/qt/platform/platformoptindialog.hsrc/qt/platform/platformpage.cppsrc/qt/platform/platformpage.hsrc/qt/platform/platformservice.cppsrc/qt/platform/platformservice.hsrc/qt/platform/platformui.cppsrc/qt/platform/platformui.hsrc/qt/sendcoinsdialog.cppsrc/qt/test/platformtests.cppsrc/qt/test/platformtests.hsrc/qt/test/test_main.cppsrc/qt/test/wallettests.cppsrc/qt/walletframe.cppsrc/qt/walletframe.hsrc/qt/walletmodel.cppsrc/qt/walletmodel.hsrc/qt/walletview.cppsrc/qt/walletview.hsrc/test/chainparams_platform_tests.cppsrc/test/fuzz/platform_walletrecords.cppsrc/test/platform_client_tests.cppsrc/test/util/platform_client.cppsrc/test/util/platform_client.hsrc/wallet/interfaces.cppsrc/wallet/platformkeys.cppsrc/wallet/platformkeys.hsrc/wallet/platformtypes.hsrc/wallet/test/platformkeys_tests.cppsrc/wallet/test/wallet_tests.cppsrc/wallet/wallet.cppsrc/wallet/wallet.htest/util/data/non-backported.txt
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interfaces::Wallet::createAssetLockTransaction builds, funds and signs a version 1 asset lock paying credits to a single P2PKH funding key, the only payload version CheckAssetLockTx accepts before v24 and IsStandardSpecialTx relays after it, and refuses a result the mempool would drop as non-standard. CWallet::CommitTransaction gains an optional broadcast_error out-parameter and interfaces::Wallet::commitTransaction returns the mempool rejection reason, so a caller can abandon a transaction that was committed but not accepted for relay. Both are compiled unconditionally; no build option gates them. The wallet_tests case builds an asset lock against a DIP0003-active regtest chain, checks it passes CheckAssetLockTx on both sides of the v24 boundary, commits it to the mempool, and verifies that a conflicting second lock is reported as txn-mempool-conflict and can be abandoned. Co-Authored-By: Claude Opus 5.5 (1M context) <noreply@anthropic.com>
CWallet::CommitTransaction reports a broadcast error when the mempool refuses the committed transaction (interfaces::Wallet::commitTransaction returns it), but WalletModel::sendCoins ignored it: the send dialog announced coinsSent, cleared the form and the transaction lingered in the wallet as a pending debit that was never on its way. sendCoins now returns a SendCoinsReturn with the new TransactionCommitFailed code and the mempool's reason, and the dialog shows it as an error and keeps the form instead of treating the send as done. Test (test_dash-qt wallettests): a send whose commit the mempool refuses (the wallet's fee ceiling lowered between preparation and commit) raises the error message, emits no coinsSent, and the transaction is not in the mempool. The case runs where WalletTests runs (not on macOS's minimal platform). Co-Authored-By: Claude Opus 5.5 (1M context) <noreply@anthropic.com>
…able-platform-gui src/platform is the Qt-free client library dash-qt drives for DashPay: the abstract PlatformClient seam, its SDK-backed SdkClient, the SigningOperation and WalletSigner custody boundary, thin adapters over the SDK's state-transition builders, the pure DPNS and DIP-15 helpers, and the wallet record formats. It is linked into dash-qt, test_dash and test_dash-qt only. SdkClient runs every read and broadcast on one serial worker thread and forwards each to dash-platform-cxx, which owns transport, retries, proof verification, the signed-time window, the protocol-version ratchet and the chain-id, ChainLock-lag and height-watermark freshness checks. One enqueue is one SDK request: paged reads return a single page with a cursor the caller continues from later. Outcomes are typed by the shell's nine-kind Status; the value of a verified read is present under OK and UnsupportedProtocolVersion, absence is a proven outcome, and broadcast replies are advisory. Endpoints are pushed in place (an empty set removes every endpoint), quorum keys in Core's internal byte order (the shell normalizes), and the ChainLock height from both the timer and NotifyChainLock. ClientConfig carries the SOCKS5 proxy every connection goes through, fixed for the client's life as Core's proxies are for the process's: a numeric address or a Unix socket path, with -proxyrandomize as fresh credentials per connection so Tor builds a circuit for each; none connects directly. The shell verifies TLS end to end through the proxy, resolves nothing locally, does not count a proxy failure against the evonode, and refuses a proxy it cannot use rather than connecting directly, so MakeSdkPlatformClient returns no client then. A state-transition builder can only be called with a SigningOperation: move-only, minted by PlatformService alone, carrying the operation kind, the key ids it may sign with, a one-shot asset-lock flag and the wallet unlock scope as an abstract RAII handle. WalletSigner receives the full signable preimage, computes the double SHA256 itself, checks the StateTransition variant byte (2 batch, 3 identity create, pinned by the shell's test vectors) against the operation kind, refuses keys outside the operation and signs through interfaces::Wallet::signPlatformDigest; the asset-lock sighash is the one digest path, accepted once per operation. Private keys never cross the bridge. The C++ protocol reimplementations of the previous draft (dpp/*, statetransitions, params) are gone: normalization, the contested rule, salted hashes, identity and document ids, entropy, nonce masking, compact-xpub layout, AES, accountReference masking, key-purpose policy, fee constants, credits per duff and system contract ids all come from the shell. IdentityRecord v2 adds NEEDS_UNLOCK and a resume state, and may end with the state transitions a registration signed ahead (identity create, username preorder and domain with their identity contract nonces and the protocol version they were built under, the profile chosen at registration) and the typed result of its last failure (operation, time, status kind, consensus code, message), so what a failure says is worded when it is shown and Show details survives a restart; a v2 record without them ends at started_at and reads unchanged. A record set of another layout version or chain is wiped, never migrated. Tests: platform_client_tests (status mapping and value presence, marshalling round trips, one page per call with the cursor, WalletSigner key and kind scoping, the single asset-lock signature, the locked-wallet refusal, the pure helpers, record serialization with and without the signed transitions and the failure, the canonical-encoding refusals, the version rule, and the proxy as the SDK receives it with an unusable one giving no client) over FakePlatformClient and a seeded descriptor wallet; a pure-C++ fuzz target over the wallet records. doc/platform-gui.md documents the trust model, custody contract, threading, privacy gating and repin policy. Co-Authored-By: Claude Opus 5.5 (1M context) <noreply@anthropic.com>
Node::isReachable(Network) answers whether outbound connections to a network are allowed, from g_reachable_nets: the effect of -onlynet, -onion, -noonion and the onion proxy the Tor controller configures once it has connected. The DashPay GUI needs it to choose how it connects to evonodes the way Core connects to its peers, and reading -onlynet itself would miss everything but -onlynet. Co-Authored-By: Claude Opus 5.5 (1M context) <noreply@anthropic.com>
Add the DashPay tab (behind the Show DashPay Tab option, default off) with the per-wallet opt-in it needs before anything contacts Platform. The opt-in dialog says the wallet connects to Dash Platform through evonodes and what the evonode answering each request can see (your IP address, or your proxy's; your identity and what it looks up; the usernames you search for), that connections are encrypted and use the same network settings and proxy as the rest of Dash Core, and that usernames, profiles and contact requests are public. It writes only the platform/enabled record and the record layout version. The chain id the records belong to is never taken from configuration: the first read the client verified stamps platform/chain-id with the chain id it was verified for. PlatformPage::maybeCreateService constructs the PlatformService only when the wallet opted in, is a descriptor wallet holding its own keys, the node's network settings leave DashPay a network to use, network activity is on and the node has a ChainLock; otherwise the page shows the reason. DashPay connects to evonodes as Core connects to its peers (PlatformRoute): with IPv4 or IPv6 reachable, through -proxy or directly, to evonodes on those networks, and to onion ones only when the onion proxy is that same proxy; with only onion reachable (-onlynet=onion), through the onion proxy to onion evonodes; never to I2P or CJDNS ones. The reachable networks come from interfaces::Node::isReachable and the proxies from getProxy, so -onion, -noonion and the Tor controller's onion proxy count, not -onlynet alone. The route is chosen once when the service is created, its proxy configures the client, and only evonodes on it are pushed; when the masternode list has evonodes but none on the route, nothing is pushed and the page says no evonode can be reached over the networks the settings allow. The service pushes an empty endpoint set while network activity is off, feeds evonode endpoints, Platform quorum keys and the best ChainLock height into the client on a timer and on every NotifyChainLock, and mints the SigningOperation every write signs under, which needs a wallet unlock that is released with the operation. Every client status passes through the service: an UnsupportedProtocolVersion freezes writes; a CHAIN_ID_MISMATCH on any response enters the mismatch state, which blocks writes until a verified read clears it; and records stamped for another chain id enter the network-changed state, which offers to discard the local Platform state and re-scan rather than leaving the wallet registered on a chain that no longer exists. -platformchainid is a GUI-only argument applied on testnet and devnets and refused at startup on mainnet; the chain id itself comes from CChainParams::PlatformChainId(). The mismatch text names -platformchainid only when it is set. WalletModel::UnlockContext becomes movable so an operation can own it. After this commit the tab shows only the opt-in state; usernames, contacts and payments follow. Tests (test_dash-qt PlatformTests over FakePlatformClient): no service and no client with the opt-in off; opting in records no chain id; with no network DashPay can use the service is refused with a reason, while a proxy is no gate; the route for Core's defaults, -proxy, -proxy with -onion or -noonion, a Unix socket proxy, -onlynet=ipv4 and -onlynet=onion with and without an onion proxy, never reaching I2P, and read from the node's reachable networks (routeSelection); evonodes off the route not pushed and reported until one on it is (endpointsOffTheRouteAreNotPushed); the opt-in text names evonodes and the proxy and not other people or a proxy left unused (optInDisclosureCopy); the mainnet chain id is never overridden; records for another chain enter the network-changed state where nothing signs until they are discarded, and discarding leaves the chain id to the next verified read; an inactive network pushes an empty endpoint set; opting out wipes every record; every failure kind has a user-visible description and OK/AlreadyExists have none. The welcome and network-changed panels are a centred column between stretches rather than an aligned widget, so wrapped text gets the height its width needs, and a card whose text changes is measured again. When -platformchainid is set, the network-changed page says the setting may be what is wrong. The service pushes endpoints again as soon as network activity is back and reports when endpoints return (endpointsAvailable) and when network activity changes. A context change that comes while the endpoints are being collected (network activity turned off or on again quickly) has them collected again when that collection lands, not at the next timer tick, and the collection made before the change is dropped rather than pushed, so a set gathered while network activity was on never reaches the client after it was turned off. A message line can show a message that clears itself after a few seconds, and Show details text is built from the failed step's operation, status and time. Headings use the Overview page's section size. Test: network activity off empties the client's endpoints, turning it on pushes them again at once, a quick off and on collects them again, and a quick on and off pushes only the empty set (networkResumePushesEndpointsAgain). The page is built from shared DashPay building blocks (qt/platform/platformui): the masternode dialogs' secondary-button style, busy bar and hints, and a message line with a Show details / Copy details disclosure. A failed Platform call is described in plain sentences mapped from its status kind and rs-dpp consensus code; the raw result is only in the details. A page that cannot start names what resolves it (Turn network on) or, for network settings, says what DashPay needs. Test: status descriptions are sentences without codes or internal messages, with the result in the details, and the mismatch text mentions -platformchainid only when it is set. DashPay is turned on and off in Options, Wallet, in a DashPay group for the wallet the main window shows (DashPayOptionsWidget). Opting in is a per-wallet record, not a global setting, so the group names the wallet, says each wallet has its own setting, and its Enable DashPay… or Disable DashPay… acts at once through the opt-in or a confirmation whose default is Cancel and whose destructive button is secondary, like Reset Options, never through the dialog's OK or Cancel. The DashPay tab has no Disable button: where DashPay is on but not working, the welcome and network-changed pages offer DashPay settings…, which opens that group. The Show DashPay Tab tooltip says hiding the tab does not turn DashPay off. Test: the group turns DashPay on through the opt-in and off through the confirmation, Cancel changes nothing, and the tab offers no Disable button (dashPayOptionsSection). Co-Authored-By: Claude Opus 5.5 (1M context) <noreply@anthropic.com>
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Final validation — Phase 1 + Phase 2
Verified all six supplied findings against head 38b4a14 and the PR's stated single-commit scope. Three blocking defects remain: the service survives model teardown, response-driven safety gates are disconnected, and availability failures disappear behind the dashboard. Two additional findings are retained as non-blocking suggestions; the empty-argument finding is dropped because startup refusal matches the documented mainnet policy. Verification was source-based; no files were changed or tests run.
🔴 3 blocking | 🟡 2 suggestion(s)
Review provenance
Source: reviewer 1: muse-spark-1.3-contributor (agent: phase1-reviewer, role: general); reviewer 2: muse-spark-1.3-contributor (agent: phase1-reviewer, role: dash-core-commit-history); reviewer 3: gpt-6-astra (agent: phase2-reviewer, role: general); reviewer 4: gpt-6-astra (agent: phase2-reviewer, role: dash-core-commit-history); final verifier: gpt-6-astra (agent: astra-verifier, role: final-verifier)
- Triage:
criticalbygpt-6-astra(effort low) — This is a large, intricate cross-cutting change that introduces Platform client signing and wallet key-handling paths in src/platform/signer.cpp, src/platform/walletrecords.cpp, and src/wallet/platformkeys.cpp, directly affecting cryptography, signatures, and persisted wallet records. - Phase 1 reviewers:
muse-spark-1.3-contributor— general (completed, effort xhigh); agentphase1-reviewer,muse-spark-1.3-contributor— dash-core-commit-history (completed, effort xhigh); agentphase1-reviewer - Phase 1 model:
muse-spark-1.3-contributor— not quota-gated; passed overgemini-3.8-flash-high(antigravity below 15% reserve: weekly 13% left, 5h 100% left),glm-5.3-flash(not used above high effort; tier asks max) - Fresh verifier:
gpt-6-astra— final-verifier; agentastra-verifier - Phase 2 reviewers:
gpt-6-astra— general (completed, effort xhigh); agentphase2-reviewer,gpt-6-astra— dash-core-commit-history (completed, effort xhigh); agentphase2-reviewer
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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 `src/qt/platform/platformpage.cpp`:
- [BLOCKING] src/qt/platform/platformpage.cpp:230-240: Stop the Platform service when the client model is detached
setClientModel(nullptr) leaves m_service running with references to the old models. During normal shutdown, BitcoinApplication::requestShutdown() propagates this call through the wallet views, then deletes the wallet controller and ClientModel without deleting those views. The service's 60-second timer can subsequently enter updateNodeContext() and dereference the freed ClientModel; its context worker can also overlap core teardown. Destroy and join the service when detaching the model, while its dependencies are still alive, and emit platformServiceReady(nullptr). The existing service destructor already joins the worker and shuts down the client.
- [BLOCKING] src/qt/platform/platformpage.cpp:401-409: Display availability failures after the service has started
The availability notices and their actions belong to stack page 0, but refresh() selects the dashboard whenever a service exists and its saved chain has not changed. Turning network activity off after service creation therefore hides the paused notice and its Turn network on action. Likewise, when endpoint filtering marks the service UNREACHABLE, reachabilityChanged triggers refresh(), which populates the explanation and immediately hides its page. Select the notice page while an availability gate is active, preserving the intended network-change precedence, or display these notices on the dashboard. Add coverage of the visible page after these transitions; the existing tests check service availability rather than notice visibility.
- [SUGGESTION] src/qt/platform/platformpage.cpp:377: Allow local opt-in while transient service gates are closed
The tab hides Enable while syncing, waiting for a ChainLock, or blocked by network activity/settings, although opting in only writes local records and maybeCreateService() separately enforces those gates. Options already permits opt-in in these states: DashPayOptionsWidget::updateState() hides Enable only for NO_PLATFORM, LEGACY_WALLET, and NO_PRIVATE_KEYS, and dashPayOptionsSection exercises enabling without a ChainLock. Apply the same eligibility rule on the tab so users can consent now and let the service start when ready. This is non-blocking because Options remains a working opt-in path and the tab exposes Enable once the gates clear.
- [SUGGESTION] src/qt/platform/platformpage.cpp:304-312: Return failure when disabling DashPay cannot wipe its records
The warning correctly reports a WipeRecords failure, but disableDashPay() still returns true despite its documented contract of returning whether DashPay was turned off. If deleting platform/enabled fails, refresh() can recreate the service when the availability gates pass, so the true result can describe the opposite of the resulting state. Preserve the warning and refresh, but return false on wipe failure. Current callers ignore the result, so this is an API-contract correction rather than an additional unreported failure in the current UI.
In `src/qt/platform/platformservice.cpp`:
- [BLOCKING] src/qt/platform/platformservice.cpp:285-294: Connect client responses to the service's status observer
observeStatus() is private and has no callers in this head. client() returns the underlying PlatformClient directly, and the constructor installs no response observer. Consequently, successful verified reads cannot stamp platform/chain-id, and CHAIN_ID_MISMATCH or UNSUPPORTED_PROTOCOL_VERSION responses cannot set the flags checked by beginSigningOperation(). These are explicit guarantees of the service introduced by this PR, but requests made through its public client() path bypass them. Route callbacks through service-owned handling that invokes observeStatus() on the GUI thread before delivering the result, and test chain stamping and both signing gates through that public request path.
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| void PlatformPage::setClientModel(ClientModel* client_model) | ||
| { | ||
| clientModel = client_model; | ||
| if (clientModel) { | ||
| // The gates that open on their own (sync finished, first ChainLock | ||
| // seen) retry the service creation; nothing is fetched by these. | ||
| connect(clientModel, &ClientModel::networkActiveChanged, this, &PlatformPage::refresh); | ||
| connect(clientModel, &ClientModel::numBlocksChanged, this, &PlatformPage::refresh); | ||
| connect(clientModel, &ClientModel::chainLockChanged, this, &PlatformPage::refresh); | ||
| } | ||
| refresh(); |
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🔴 Blocking: Stop the Platform service when the client model is detached
setClientModel(nullptr) leaves m_service running with references to the old models. During normal shutdown, BitcoinApplication::requestShutdown() propagates this call through the wallet views, then deletes the wallet controller and ClientModel without deleting those views. The service's 60-second timer can subsequently enter updateNodeContext() and dereference the freed ClientModel; its context worker can also overlap core teardown. Destroy and join the service when detaching the model, while its dependencies are still alive, and emit platformServiceReady(nullptr). The existing service destructor already joins the worker and shuts down the client.
source: gpt-6-astra (phase2-reviewer: general)
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| void PlatformService::observeStatus(const platform::Status& status, bool verified_read) | ||
| { | ||
| // The client only verifies a response signed for m_chain_id, so a | ||
| // verified read is what proves the chain id the records belong to. | ||
| const bool verified{verified_read && (status.kind == platform::StatusKind::OK || | ||
| status.kind == platform::StatusKind::PROVEN_ABSENT || | ||
| status.kind == platform::StatusKind::UNSUPPORTED_PROTOCOL_VERSION)}; | ||
| if (verified) { | ||
| if (!m_chain_id_stamped && !m_network_changed) { | ||
| m_chain_id_stamped = writeRecord(platform::records::CHAIN_ID, {m_chain_id.begin(), m_chain_id.end()}); |
Collaborator
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🔴 Blocking: Connect client responses to the service's status observer
observeStatus() is private and has no callers in this head. client() returns the underlying PlatformClient directly, and the constructor installs no response observer. Consequently, successful verified reads cannot stamp platform/chain-id, and CHAIN_ID_MISMATCH or UNSUPPORTED_PROTOCOL_VERSION responses cannot set the flags checked by beginSigningOperation(). These are explicit guarantees of the service introduced by this PR, but requests made through its public client() path bypass them. Route callbacks through service-owned handling that invokes observeStatus() on the GUI thread before delivering the result, and test chain stamping and both signing gates through that public request path.
source: gpt-6-astra (phase2-reviewer: general)
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| if (!m_service) { | ||
| m_stack->setCurrentIndex(0); | ||
| return; | ||
| } | ||
| if (m_service->networkChanged()) { | ||
| m_stack->setCurrentIndex(1); | ||
| return; | ||
| } | ||
| m_stack->setCurrentIndex(2); |
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🔴 Blocking: Display availability failures after the service has started
The availability notices and their actions belong to stack page 0, but refresh() selects the dashboard whenever a service exists and its saved chain has not changed. Turning network activity off after service creation therefore hides the paused notice and its Turn network on action. Likewise, when endpoint filtering marks the service UNREACHABLE, reachabilityChanged triggers refresh(), which populates the explanation and immediately hides its page. Select the notice page while an availability gate is active, preserving the intended network-change precedence, or display these notices on the dashboard. Add coverage of the visible page after these transitions; the existing tests check service availability rather than notice visibility.
source: gpt-6-astra (phase2-reviewer: general)
|
|
||
| const PlatformAvailability availability{PlatformService::Availability(*walletModel, *clientModel, m_service.get())}; | ||
| m_privacy_note->setVisible(!availability.enabled); | ||
| m_enable_button->setVisible(!availability.enabled && availability.gate == Gate::NONE); |
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🟡 Suggestion: Allow local opt-in while transient service gates are closed
The tab hides Enable while syncing, waiting for a ChainLock, or blocked by network activity/settings, although opting in only writes local records and maybeCreateService() separately enforces those gates. Options already permits opt-in in these states: DashPayOptionsWidget::updateState() hides Enable only for NO_PLATFORM, LEGACY_WALLET, and NO_PRIVATE_KEYS, and dashPayOptionsSection exercises enabling without a ChainLock. Apply the same eligibility rule on the tab so users can consent now and let the service start when ready. This is non-blocking because Options remains a working opt-in path and the tab exposes Enable once the gates clear.
Suggested change
| m_enable_button->setVisible(!availability.enabled && availability.gate == Gate::NONE); | |
| m_enable_button->setVisible(!availability.enabled && availability.gate != Gate::NO_PLATFORM && availability.gate != Gate::LEGACY_WALLET && availability.gate != Gate::NO_PRIVATE_KEYS); |
source: muse-spark-1.3-contributor (phase1-reviewer: general, dash-core-commit-history)
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| m_service.reset(); | ||
| Q_EMIT platformServiceReady(nullptr); | ||
| if (!PlatformService::WipeRecords(walletModel->wallet())) { | ||
| QMessageBox::warning(dialog_parent, tr("Disable DashPay"), | ||
| tr("Some DashPay data could not be deleted from the wallet. Try disabling DashPay " | ||
| "again.")); | ||
| } | ||
| refresh(); | ||
| return true; |
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🟡 Suggestion: Return failure when disabling DashPay cannot wipe its records
The warning correctly reports a WipeRecords failure, but disableDashPay() still returns true despite its documented contract of returning whether DashPay was turned off. If deleting platform/enabled fails, refresh() can recreate the service when the availability gates pass, so the true result can describe the opposite of the resulting state. Preserve the warning and refresh, but return false on wipe failure. Current callers ignore the result, so this is an API-contract correction rather than an additional unreported failure in the current UI.
Suggested change
| m_service.reset(); | |
| Q_EMIT platformServiceReady(nullptr); | |
| if (!PlatformService::WipeRecords(walletModel->wallet())) { | |
| QMessageBox::warning(dialog_parent, tr("Disable DashPay"), | |
| tr("Some DashPay data could not be deleted from the wallet. Try disabling DashPay " | |
| "again.")); | |
| } | |
| refresh(); | |
| return true; | |
| m_service.reset(); | |
| Q_EMIT platformServiceReady(nullptr); | |
| if (!PlatformService::WipeRecords(walletModel->wallet())) { | |
| QMessageBox::warning(dialog_parent, tr("Disable DashPay"), | |
| tr("Some DashPay data could not be deleted from the wallet. Try disabling DashPay " | |
| "again.")); | |
| refresh(); | |
| return false; | |
| } | |
| refresh(); | |
| return true; |
source: muse-spark-1.3-contributor (phase1-reviewer: general, dash-core-commit-history)
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Issue being fixed or feature implemented
This PR adds the DashPay tab to dash-qt (tracking issue #7512) and the per-wallet opt-in it needs before anything contacts Dash Platform. This is the first of four GUI PRs. Usernames (#7765), profiles and contacts (#7766), and payments, recovery and identity details (#7767) build on it.
Stacked PR. It builds on #7670, which builds on #7623, #7763 and #7764. Review from
38b4a14a86d9onward, the one commitfeat(qt): DashPay opt-in, privacy gating and Platform network checks.This PR has been reshaped. It used to carry the whole GUI in one PR. The GUI is now split into four PRs, rebuilt on the SDK-backed client library and verified live on testnet against the DashPay iOS app.
What was done?
The DashPay tab is behind the Show DashPay Tab option, which is off by default.
Opt-in. Opting in is per wallet. The opt-in dialog says:
The opt-in writes only the enabled record and the record layout version. The chain id the records belong to is never taken from configuration: the first read the client verifies stamps it.
Gating.
PlatformPagecreates the service only when all of these hold, and otherwise shows the reason:Network route (
PlatformRoute). DashPay connects to evonodes the way Core connects to its peers:-proxyor directly;-onlynet=onion), through the onion proxy to onion evonodes;The reachable networks come from
interfaces::Node::isReachable(feat: Dash Platform client library over dash-platform-cxx behind --enable-platform-gui #7670), so-onion,-noonionand the Tor controller's onion proxy all count. When the masternode list has evonodes but none on the route, nothing is pushed and the page says why.The service pushes an empty endpoint set while network activity is off. It feeds endpoints, quorum keys and the ChainLock height into the client, and mints the
SigningOperationevery write signs under.UnsupportedProtocolVersionfreezes writes.CHAIN_ID_MISMATCHblocks writes until a verified read clears it.-platformchainidis a GUI-only argument, applied on testnet and devnets and refused at startup on mainnet. The chain id itself comes fromCChainParams::PlatformChainId()(feat: add Platform Tenderdash chain id to CChainParams #7764).Options → Wallet → DashPay turns DashPay on and off for the wallet shown. It names the wallet and acts at once, through the opt-in or through a confirmation whose default is Cancel. The tab itself has no Disable button.
Shared DashPay building blocks (
platformui): the busy bar, hints, and a message line with a Show details / Copy details disclosure. A failed Platform call is described in plain sentences mapped from its status kind and consensus code, and the raw result appears only in the details.How Has This Been Tested?
test_dash-qtPlatformTests overFakePlatformClient:-proxy,-proxywith-onion/-noonion, a Unix socket proxy,-onlynet=ipv4, and-onlynet=onionwith and without an onion proxy; I2P is never reached (routeSelection);endpointsOffTheRouteAreNotPushed);optInDisclosureCopy), and the mainnet chain id is never overridden;networkResumePushesEndpointsAgain);dashPayOptionsSection), and failure descriptions contain no codes or internal messages.On aarch64-apple-darwin, the full
test_dash-qtexited 0 on the stack head against the re-pinned archive (0c57897227), with 74 of 74 PlatformTests passing. Lints (circular dependencies, includes, whitespace, format strings, files, spelling, qt-translation) pass at the stack head.Live testnet (2026-09-28). The opt-in dialog, the Options DashPay group and the gating all worked on new wallets. Screenshots from that run:
The full screenshot set and its manifest are in dashpay-gui-2026-09-final.
Breaking Changes
None. Everything is behind
--enable-platform-gui, which is off by default, and the tab is hidden by default.WalletModel::UnlockContextbecomes movable.Checklist:
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