fix(relay): reject invalid stored device IDs (#161) - #165
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Validate every JSON and legacy Relay device ID before storage-dependent work. Treat any malformed member, including empty legacy fields, as a failed read so VaultSync neither rewrites secure storage nor starts provisioning. What could go wrong and why this is safe: accepting one malformed identifier could rewrite corrupt state or trigger paid Relay work with an invalid target. Valid values remain unchanged, the existing generic error is reused, and failed reads perform no migration, deletion, write, or provisioning. Not verified: physical-device Keychain corruption and production Relay E2E remain part of the isolated release-candidate campaign. Fixes #161
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📝 WalkthroughWalkthroughCloud Relay now validates stored device IDs in JSON and legacy formats. Invalid IDs fail closed, remain unchanged, and prevent persistence and provisioning. Tests cover valid loading, malformed members, empty legacy entries, and generic failure reporting. ChangesStored Device ID Validation
Estimated code review effort: 3 (Moderate) | ~20 minutes Merge Risk: 🟡 Moderate · up to The change blocks invalid device IDs from provisioning, but malformed stored data can also cause subscription revocation or expiry to skip remote cleanup while local status is cleared, potentially leaving a Relay registration active. Merge requires explicit owner acceptance or a safeguard for this cleanup path. Poem
🚥 Pre-merge checks | ✅ 7✅ Passed checks (7 passed)
Full details: Linked Issues checkExplanation The changes satisfy issue Full details: Out of Scope Changes checkExplanation The production, test, and changelog changes remain within issue Full details: No Private Note LeakageExplanation PASS — The pull request adds no logging, analytics, crash reporting, diagnostics, or network request code. The production diff only trims the stored string, decodes it, validates IDs with the pure Full details: Bounded Ios Background WorkExplanation PASS. The PR changes Full details: Bridge Contract CompatibilityExplanation PASS — the bridge contract remains unchanged. The PR diff against origin/main changes only CHANGELOG.md, SubscriptionManager.swift, and Swift tests. It changes no Go bridge source, generated bridge surface, or SyncBridgeService.swift. The existing bridge rules remain in place: gomobile exports use primitive/string/[]byte types, complex values use JSON, and Swift maps empty Go error strings to nil. The production change only validates stored Relay device IDs before Relay provisioning; it does not alter any Go bridge call, type, JSON response shape, or success convention. ✨ Finishing Touches📝 Generate docstrings
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Inline comments:
In `@CHANGELOG.md`:
- Line 15: Update the CHANGELOG release note to refer to malformed Relay device
IDs rather than server identities, and state that Cloud Relay provisioning did
not complete rather than registration. Preserve the documented behavior for
rejecting the malformed value, sending no provisioning request, retaining the
stored value, and leaving valid JSON and legacy records unchanged.
In `@ios/VaultSync/Services/SubscriptionManager.swift`:
- Around line 121-128: Update the format selection in SubscriptionManager’s
stored-ID parsing to inspect whitespace-trimmed text for the JSON-array prefix
while decoding the original stored value; preserve legacy comma-separated
parsing otherwise, and add a regression test covering valid JSON with leading
whitespace.
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CHANGELOG.mdios/VaultSync/Services/SubscriptionManager.swiftios/VaultSyncTests/KeychainServiceTests.swiftios/VaultSyncTests/SubscriptionManagerTests.swift
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Focus on Swift 6 strict concurrency, Sendable/MainActor correctness, Task cancellation,
⚙️ CodeRabbit configuration file
Files:
ios/VaultSyncTests/SubscriptionManagerTests.swiftios/VaultSync/Services/SubscriptionManager.swiftios/VaultSyncTests/KeychainServiceTests.swift
Review public documentation for technical accuracy, privacy/security claims, App Store-facing wording,
⚙️ CodeRabbit configuration file
Files:
CHANGELOG.md
VaultSync syncs private Obsidian notes through Syncthing. Treat data loss,
⚙️ CodeRabbit configuration file
Files:
ios/VaultSyncTests/SubscriptionManagerTests.swiftios/VaultSync/Services/SubscriptionManager.swiftCHANGELOG.mdios/VaultSyncTests/KeychainServiceTests.swift
Build the iOS/iPadOS application with Swift 6 and SwiftUI, targeting iOS/iPadOS 18 or later.
📄 CodeRabbit inference engine (README.md)
Files:
ios/VaultSyncTests/SubscriptionManagerTests.swiftios/VaultSync/Services/SubscriptionManager.swiftios/VaultSyncTests/KeychainServiceTests.swift
For Swift background execution changes, pass if work is bounded, cancellation-aware, handles expiration callbacks, and records errors without leaking private vault data. Fail only when background work can continue unbounded, miss cleanup, o...
📄 CodeRabbit inference engine (Custom checks)
Files:
ios/VaultSyncTests/SubscriptionManagerTests.swiftios/VaultSync/Services/SubscriptionManager.swiftios/VaultSyncTests/KeychainServiceTests.swift
🪛 SwiftLint (0.65.0)
ios/VaultSyncTests/KeychainServiceTests.swift
[Warning] 320-320: Prefer failable String(bytes:encoding:) initializer when converting Data to String
(optional_data_string_conversion)
Select the stored format from a whitespace-trimmed view while decoding the original JSON value, and align the changelog with Relay device-ID and provisioning terminology. What could go wrong and why this is safe: valid JSON with leading whitespace could otherwise be mistaken for a legacy identifier and block Relay work. The change affects format selection only; every decoded member still passes canonical validation, malformed reads remain fail-closed, and no rewrite, delete, or provisioning path is added.
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Summary
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Fixes #161
Summary