🛡️ Sentinel: [Critical] Fix SQL injection in schema validation and API errors#109
🛡️ Sentinel: [Critical] Fix SQL injection in schema validation and API errors#109mattjoyce wants to merge 1 commit into
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- Fixes SQL injection in `internal/storage/sqlite.go` (`sqliteColumnExists`) by replacing `fmt.Sprintf` with a parameterized `pragma_table_info(?)` query. - Fixes unhandled `json.Marshal` errors in `internal/api/handlers.go` to prevent silent failures and empty enqueued payloads. - Added corresponding documentation in `.jules/sentinel.md` journal. Co-authored-by: mattjoyce <278869+mattjoyce@users.noreply.github.com>
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📝 WalkthroughWalkthroughThis PR adds explicit error handling for ChangesHandle json.Marshal errors in API handlers
Estimated code review effort🎯 2 (Simple) | ⏱️ ~8 minutes Poem
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🤖 Prompt for all review comments with AI agents
Verify each finding against current code. Fix only still-valid issues, skip the
rest with a brief reason, keep changes minimal, and validate.
Inline comments:
In @.jules/sentinel.md:
- Line 1: Update the incident heading string "## 2025-05-30 - Silent JSON
Marshal failure in API Handlers" to the correct date in 2026 (i.e., change
2025-05-30 to 2026-05-30) so the sentinel entry's timestamp matches the PR and
incident timeline.
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Fix all unresolved CodeRabbit comments on this PR:
- Push a commit to this branch (recommended)
- Create a new PR with the fixes
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.jules/sentinel.mdinternal/api/handlers.go
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| ## 2025-05-30 - Silent JSON Marshal failure in API Handlers | |||
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Fix the incident date to match the actual timeline.
The heading date is 2025-05-30, but this PR and incident context are dated May 30, 2026. Please correct the year to avoid an incorrect security journal chronology.
🧰 Tools
🪛 markdownlint-cli2 (0.22.1)
[warning] 1-1: Headings should be surrounded by blank lines
Expected: 1; Actual: 0; Below
(MD022, blanks-around-headings)
[warning] 1-1: First line in a file should be a top-level heading
(MD041, first-line-heading, first-line-h1)
🤖 Prompt for AI Agents
Verify each finding against current code. Fix only still-valid issues, skip the
rest with a brief reason, keep changes minimal, and validate.
In @.jules/sentinel.md at line 1, Update the incident heading string "##
2025-05-30 - Silent JSON Marshal failure in API Handlers" to the correct date in
2026 (i.e., change 2025-05-30 to 2026-05-30) so the sentinel entry's timestamp
matches the PR and incident timeline.
github_repo_sync et al are vault-native + ready but exit 127 under enforce: uv run --script needs uv on PATH + writable HOME/cache and walks config up-tree into the 0700 cwd. Affects the 4 git plugins; disabled for now. Fix: account-friendly uv (UV_CACHE_DIR/HOME + cwd off 0700) or de-uv to plain python3. Found during the #107 push.
…on + fail-closed proven live Recipe step 1 generalized: name the vault secret via a config key (salt_secret/token_secret) so a shared base plugin stays reusable across instances. Status: discord_notify + ap_canary vault-native + live (B form: snake instance + vault_principal + requires_vault); fail-closed PROVEN live (bogus principal → refused spawn). Plugin code @ ductile-plugins a1934e5. git/uv plugins → #109.
… not uv exit-127 fixed (system uv); real failure is exit-2: confined plugins get NO writable HOME and cannot reach their own state_dir (0700 /var/lib/ductile blocks traversal) — affects EVERY plugin (proven by github_repo_sync mkdir). Frame: privsep silently changed the plugin runtime contract. Fix = C (tmpfiles 0711 + gateway HOME/XDG=state_dir at spawn). Revised B = urllib + drop the spurious downstream mkdir (works today). A rejected (cache poisoning). + design norm.
Under enforce a dropped account had no writable HOME and could not even reach its own 0700 state_dir (the 0700 on /var/lib/ductile blocked traversal) — so any plugin writing state, or a runtime needing a cache, failed closed. Two-part fix: - tmpfiles: /var/lib/ductile + .../accounts -> 0711 (traverse-only, not listable; per-account dirs stay 0700). The /home pattern: an account reaches the dir it owns, secret files inside stay 0600-unreadable. The boot fs-reconcile gate tightens the db FILE to 0600 and never touches the dir mode, so 0711 survives boot. - spawn: for a confined account, withAccountRuntimeEnv drops inherited HOME/XDG_CACHE_HOME and re-points both at the account state_dir, and cmd.Dir is set there. Env carries it because Go drops uid before chdir; with the 0711 floor the dropped uid can now also chdir into its own dir. Unconfined plugins untouched. Tests in env_test.go (rebases home+cache; no gateway-home leak).
Codify the runtime contract privsep made explicit, and give authors a copy-me Tier-1 pattern so the exemplar rewrite is "clone and fill in". - ADR docs/adr/confined-plugin-runtime-contract.md: guaranteed (writable HOME/cache/cwd = state_dir, secrets over stdin) vs forbidden (writes outside state_dir, ambient home, deps fetched at spawn) + the 3-tier decision rule (stdlib default / sys_exec floor / fetch-at-spawn advanced). - plugins/_template/: a real, runnable, tested stdlib plugin embodying the contract (run.py, manifest.yaml, test_run.py 3/3, vendored _lib helpers, README with operator wiring + node/TS build-ahead appendix). - PLUGIN_DEVELOPMENT.md: fix the now-misleading defaults — the "canonical" example cargo-culted `uv run --script` with empty deps; §9/§10 claimed plugins inherit the dispatcher cwd and run as the gateway user (both false under enforce). Add §10.6 Runtime contract + extend the §11 checklist with contract items.
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This PR fixes two security vulnerabilities/robustness issues:
fmt.Sprintf-basedPRAGMAstatement ininternal/storage/sqlite.gowith the parameterized table-valued functionpragma_table_info(?)to protect against SQL injection.json.Marshalerrors ininternal/api/handlers.goto ensure failing requests are appropriately rejected instead of failing silently or proceeding with null payloads.Both learnings are documented as instructed in
.jules/sentinel.md.PR created automatically by Jules for task 3299722185188359010 started by @mattjoyce
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