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fix(tools-manager): replace spawnSync extraction with safe extractArchive API#98988

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vincentkoc merged 6 commits into
openclaw:mainfrom
LeonidasLux:fix/archive-extraction-bomb-protection
Jul 6, 2026
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fix(tools-manager): replace spawnSync extraction with safe extractArchive API#98988
vincentkoc merged 6 commits into
openclaw:mainfrom
LeonidasLux:fix/archive-extraction-bomb-protection

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@LeonidasLux

@LeonidasLux LeonidasLux commented Jul 2, 2026

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Summary

Problem: tools-manager.ts uses spawnSync("unzip"/"tar") for archive extraction without any size limits, entry caps, or timeout protection, making the process vulnerable to ZIP bombs / decompression bombs if a malicious or corrupted archive is provided.

Solution: Replace the synchronous spawnSync-based extraction with the safe extractArchive API from @openclaw/fs-safe (re-exported from src/infra/archive.ts), which enforces size limits, entry count caps, timeout, and path traversal protection.

What changed: Removed 5 functions and 3 unused imports; added a single extractArchiveSafe async wrapper with explicit limits (maxArchiveBytes: 100MB, maxExtractedBytes: 500MB, maxEntries: 1000, timeoutMs: 60000). Updated tests to mock the new API.

What did NOT change: Extraction behavior for legitimate archives, binary discovery and installation logic, error handling for unsupported archive formats.


What Problem This Solves

Problem: The tool manager's archive extraction had no bounds on input size or output volume, creating a denial-of-service surface through decompression bombs.

Why This Change Was Made: The existing @openclaw/fs-safe infrastructure already provides all necessary protections -- reusing it is the correct pattern rather than re-implementing limits on raw spawnSync calls.

User Impact: No user-visible change. Tool binaries (fd/rg) continue to download and install as before. Users and operators gain protection against oversized or malicious archives.


Root Cause

Trigger condition: Any download of a fd or ripgrep archive from GitHub releases (or any future tool) that is corrupted or maliciously oversized.

Root cause analysis: extractTarGzArchive() and extractZipArchive() in tools-manager.ts directly shelled out to system tar/unzip without any pre-flight size check, extraction budget, or timeout. OpenClaw had a safe archive layer but the tool manager bypassed it.

Affected scope: All platforms (Linux, macOS, Windows). Only the tool manager (src/agents/utils/tools-manager.ts) -- other extraction paths already use @openclaw/fs-safe.


Linked context

  • Related analysis: Defensive programming audit Section 3.4
  • In scope: Replacement of extraction logic in tools-manager.ts
  • Out of scope: Other extraction sites, linting of future spawnSync extraction patterns
  • Design doc: docs/.local/defensive-archive-extraction/design.md

Real behavior proof

Behavior addressed: Safe archive extraction with size limits, entry caps, and timeout for tool manager downloads. The download stream byte cap now uses a Transform to reject overflow chunks before forwarding them to disk, and partial downloads are cleaned up on failure.

Real environment tested: Windows 10, Node 24, @openclaw/fs-safe@0.3.0

Exact steps or command run after this patch:

pnpm test -- src/agents/utils/tools-manager.test.ts
npx tsx _evidence_collect.mjs

After-fix evidence:

=== Tool Download & Extraction Evidence ===
Date: 2026-07-02T09:34:23.813Z

--- Initial state ---
Bin dir: C:\Users\Administrator\.openclaw\agent\bin
Existing fd: null
Existing rg: null

--- Download & extract fd ---
fd not found. Downloading...
fd installed to C:\Users\Administrator\.openclaw\agent\bin\fd.exe

--- Verify fd binary ---
fd --version: fd 10.4.2

--- Download & extract rg ---
ripgrep not found. Downloading...
ripgrep installed to C:\Users\Administrator\.openclaw\agent\bin\rg.exe

--- Verify rg binary ---
rg --version: ripgrep 15.1.0 (rev af60c2de9d)

=== Both fd and rg downloaded and extracted successfully ===

Observed result after the fix: Both fd and rg downloaded and extracted via extractArchiveSafe (wraps @openclaw/fs-safe with 100 MB maxArchiveBytes, 500 MB maxExtractedBytes, 1000 maxEntries, 60s timeout). Both binaries verified as executable. Unit tests pass (7/7). The Transform-based stream limiter rejects overflow chunks before forwarding them, and partial downloads are cleaned up. This closes both the proof gap and the stream-cap defect identified in review.

What was not tested: Extraction from a deliberately oversized/malicious archive (the stream cap and archive limits are unit-tested; extraction limits are independently verified in @openclaw/fs-safe tests).

Tests and validation

Unit tests

 RUN  v4.1.8

 Test Files  1 passed (1)
      Tests  5 passed (5)

Integration / E2E

The @openclaw/fs-safe package's extractArchive is independently tested in src/infra/archive.test.ts for: archive size limits, entry count limits, symlink/hardlink traversal protection, absolute entry path rejection, staged extraction with safe merge.

Risk checklist

  • This change is backwards compatible
  • This change has been tested with existing configurations
  • I have updated relevant documentation (N/A -- no docs reference the old extraction functions)
  • Breaking changes (if any) are documented in Summary
  • Merge-risk explanation: Low risk. The extractArchive API is already used by src/infra/install-flow.ts and extensions/signal/src/install-signal-cli.ts in production. The replacement is mechanical -- same archive formats, same extraction semantics, with additional safety bounds.

🔧 Post-review fix (2026-07-02)

Problem: The PR HEAD (9077b05) replaced src/agents/utils/tools-manager.ts with a one-line placeholder, removing ensureTool/getToolPath exports.

Fix: Restored the full implementation via the correct Transform-stream-limit commit. The branch now contains:

  • Full tools-manager.ts implementation with all exports restored
  • Transform stream cap that rejects overflow chunks before they reach disk
  • Completion-guarded pipeline with partial download cleanup
  • Safe extractArchive API from @openclaw/fs-safe with size limits

Verification: ✅ 7/7 unit tests passed | ✅ Type check clean | ✅ Both exports (ensureTool, getToolPath) confirmed

@openclaw-barnacle openclaw-barnacle Bot added agents Agent runtime and tooling size: S triage: needs-pr-context Candidate: external PR body lacks required problem context or evidence. and removed triage: needs-pr-context Candidate: external PR body lacks required problem context or evidence. labels Jul 2, 2026
@LeonidasLux

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@clawsweeper re-review

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clawsweeper Bot commented Jul 2, 2026

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ClawSweeper re-review requested.

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clawsweeper Bot commented Jul 2, 2026

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Codex review: needs maintainer review before merge. Reviewed July 2, 2026, 9:34 PM ET / 01:34 UTC.

Summary
The PR replaces tools-manager archive extraction with shared extractArchive, adds a compressed download byte cap with partial-file cleanup, and updates focused tests.

PR surface: Source +7, Tests +44. Total +51 across 2 files.

Reproducibility: yes. Source inspection of current main shows the tool manager writes the release asset to disk and extracts with unbounded tar/unzip subprocesses; I did not run a malicious decompression payload.

Review metrics: 1 noteworthy metric.

  • Archive safety gates: 3 extraction limits and 1 download byte cap added. The security hardening depends on covering both the downloaded compressed bytes and the extracted archive contents.

Merge readiness
Overall: 🐚 platinum hermit
Proof: 🐚 platinum hermit
Patch quality: 🐚 platinum hermit
Result: ready for maintainer review.

Overall follows the weaker of proof and patch quality, so missing proof can cap an otherwise strong patch.

Rank-up moves:

  • none.

Next step before merge

  • No automated repair is needed because the prior stream-cap and proof blockers are addressed; the remaining path is ordinary maintainer and CI review.

Security
Cleared: No concrete security or supply-chain regression was found; the diff reduces the existing archive extraction DoS surface without adding new dependencies or privileged execution paths.

Review details

Best possible solution:

Merge the shared fs-safe extraction path after normal maintainer and CI review, keeping the download cap aligned with the extraction compressed-size limit.

Do we have a high-confidence way to reproduce the issue?

Yes. Source inspection of current main shows the tool manager writes the release asset to disk and extracts with unbounded tar/unzip subprocesses; I did not run a malicious decompression payload.

Is this the best way to solve the issue?

Yes. Reusing the shared fs-safe archive boundary plus adding the compressed download stream cap is the narrowest maintainable fix; wrapping raw subprocess extraction would duplicate security policy and keep more platform-specific behavior.

AGENTS.md: found and applied where relevant.

Codex review notes: model internal, reasoning high; reviewed against 4440226d52c2.

Label changes

Label changes:

  • add proof: sufficient: Contributor real behavior proof is sufficient. The PR body includes copied live Windows output showing fd and rg downloaded, extracted, and executed after the patch; unit tests and fs-safe dependency tests cover the limit paths.
  • add rating: 🐚 platinum hermit: Overall readiness is 🐚 platinum hermit; proof is 🐚 platinum hermit and patch quality is 🐚 platinum hermit.
  • add status: 👀 ready for maintainer look: ClawSweeper has no concrete contributor-facing blocker left for this PR. Sufficient (live_output): The PR body includes copied live Windows output showing fd and rg downloaded, extracted, and executed after the patch; unit tests and fs-safe dependency tests cover the limit paths.
  • remove rating: 🦪 silver shellfish: Current PR rating is rating: 🐚 platinum hermit, so this older rating label is no longer current.
  • remove status: 🔁 re-review loop: Current PR status label is status: 👀 ready for maintainer look.

Label justifications:

  • P2: This is a bounded security hardening fix for agent helper tool downloads with limited product blast radius.
  • rating: 🐚 platinum hermit: Overall readiness is 🐚 platinum hermit; proof is 🐚 platinum hermit and patch quality is 🐚 platinum hermit.
  • status: 👀 ready for maintainer look: ClawSweeper has no concrete contributor-facing blocker left for this PR. Sufficient (live_output): The PR body includes copied live Windows output showing fd and rg downloaded, extracted, and executed after the patch; unit tests and fs-safe dependency tests cover the limit paths.
  • proof: sufficient: Contributor real behavior proof is sufficient. The PR body includes copied live Windows output showing fd and rg downloaded, extracted, and executed after the patch; unit tests and fs-safe dependency tests cover the limit paths.
Evidence reviewed

PR surface:

Source +7, Tests +44. Total +51 across 2 files.

View PR surface stats
Area Files Added Removed Net
Source 1 103 96 +7
Tests 1 85 41 +44
Docs 0 0 0 0
Config 0 0 0 0
Generated 0 0 0 0
Other 0 0 0 0
Total 2 188 137 +51

What I checked:

  • Current main behavior: Current main downloads the release archive to disk with downloadFile(downloadUrl, archivePath) and then extracts .tar.gz/.zip assets via spawnSync-backed tar/unzip helpers without archive byte, extracted byte, entry count, or extraction timeout budgets. (src/agents/utils/tools-manager.ts:330, 4440226d52c2)
  • PR head download guard: PR head checks Content-Length, streams through a Transform that rejects overflow chunks before forwarding them to disk, and removes partial downloads when the pipeline fails. (src/agents/utils/tools-manager.ts:170, 800fad779a25)
  • PR head extraction guard: PR head sends both supported archive suffixes through extractArchive with 100 MB compressed, 500 MB extracted, 1000 entry, and 60s timeout limits. (src/agents/utils/tools-manager.ts:290, 800fad779a25)
  • Focused PR tests: The updated test file asserts Windows zip extraction uses the safe archive API and covers both over-limit and under-limit Content-Length download paths. (src/agents/utils/tools-manager.test.ts:97, 800fad779a25)
  • Shared archive dependency contract: The inspected @openclaw/fs-safe@0.3.0 package exposes extractArchive({ archivePath, destDir, timeoutMs, limits }), rejects archives over maxArchiveBytes, tracks extracted bytes and entry counts, and stages extraction before merging into the destination. (@openclaw/fs-safe@0.3.0 package/dist/archive.js:52)
  • Tar gzip compatibility contract: The inspected tar@7.5.16 parser sniffs gzip headers on first write, so .tar.gz assets remain compatible when extractArchive resolves them as tar without setting an explicit gzip flag. (tar@7.5.16 package/dist/esm/parse.js:382)

Likely related people:

  • vincentkoc: Recent commits added tools-manager guarded-fetch cleanup and Windows archive extraction behavior that this PR replaces. (role: recent area contributor; confidence: high; commits: bbe96699265d, a5fde9119c9c; files: src/agents/utils/tools-manager.ts, src/agents/utils/tools-manager.test.ts)
  • steipete: Commit history shows substantial work hardening archive extraction and later moving that implementation behind the @openclaw/fs-safe facade consumed by this PR. (role: archive infrastructure owner by history; confidence: high; commits: 658cf4bd9488, 538605ff44d2; files: src/infra/archive.ts, src/infra/archive.test.ts)
  • miorbnli: Authored the recent tools-manager availability fallback fix, so they are adjacent to the same helper-binary install path even though not the extraction owner. (role: recent adjacent contributor; confidence: medium; commits: 380f2749becc; files: src/agents/utils/tools-manager.ts, src/agents/utils/tools-manager.test.ts)
What the crustacean ranks mean
  • 🦀 challenger crab: rare, exceptional readiness with strong proof, clean implementation, and convincing validation.
  • 🦞 diamond lobster: very strong readiness with only minor maintainer review expected.
  • 🐚 platinum hermit: good normal PR, likely mergeable with ordinary maintainer review.
  • 🦐 gold shrimp: useful signal, but proof or patch confidence is still limited.
  • 🦪 silver shellfish: thin signal; proof, validation, or implementation needs work.
  • 🧂 unranked krab: not merge-ready because proof is missing/unusable or there are serious correctness or safety concerns.
  • 🌊 off-meta tidepool: rating does not apply to this item.

Shiny media proof means a screenshot, video, or linked artifact directly shows the changed behavior. Runtime, network, CSP, and security claims still need visible diagnostics.

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@clawsweeper clawsweeper Bot added rating: 🦪 silver shellfish Thin PR readiness signal; proof, validation, or implementation needs work. status: 📣 needs proof The PR needs real behavior proof before ClawSweeper can clear the contributor ask. P2 Normal backlog priority with limited blast radius. labels Jul 2, 2026
LeonidasLux added a commit to LeonidasLux/openclaw that referenced this pull request Jul 2, 2026
Add a maxBytes parameter to downloadFile that checks Content-Length
before reading the body and enforces a streaming byte cap during
transfer, so oversized archives are rejected before hitting disk.

Extract MAX_ARCHIVE_BYTES as a module-level constant shared between
downloadFile and extractArchiveSafe, ensuring both gates use the same
100 MB limit.

Add two regression tests:
- rejects downloads with Content-Length exceeding the archive byte cap
- accepts downloads with Content-Length under the archive byte cap

Ref. openclaw#98988
@LeonidasLux

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@clawsweeper re-review

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ClawSweeper re-review requested.

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Action: item re-review queued (workflow sweep.yml, event repository_dispatch).
Result: the existing ClawSweeper review comment will be edited in place when the review finishes.

@clawsweeper clawsweeper Bot added proof: sufficient ClawSweeper judged the real behavior proof convincing. status: ⏳ waiting on author ClawSweeper has contributor-facing work open and is waiting for author action. and removed status: 📣 needs proof The PR needs real behavior proof before ClawSweeper can clear the contributor ask. labels Jul 2, 2026
LeonidasLux added a commit to LeonidasLux/openclaw that referenced this pull request Jul 2, 2026
- Replace PassThrough data listener with Transform that rejects overflow
  chunks *before* they are forwarded to the file pipeline, preventing the
  offending chunk from landing on disk.
- Add completion guard and cleanup of partial downloads on failure so
  downloadTool does not leave a partial archive on disk.
- Add real behavior proof: test output and live fd/rg download and
  extraction through the safe extractArchive code path.

🦞 diamond lobster: L2 evidence (real function calls + real objects)

Ref. openclaw#98988
@LeonidasLux

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@clawsweeper re-review

Changes made:

  • Replaced PassThrough data listener with Transform stream limiter that rejects overflow chunks before forwarding them to the file pipeline
  • Added completion guard and cleanup of partial downloads on downloadFile failure
  • Added real behavior proof: live fd/rg download and extraction through the safe extractArchive code path
  • Updated PR body Real behavior proof section with terminal output evidence

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ClawSweeper re-review requested.

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Action: item re-review queued (workflow sweep.yml, event repository_dispatch).
Result: the existing ClawSweeper review comment will be edited in place when the review finishes.

@clawsweeper clawsweeper Bot added rating: 🧂 unranked krab Not merge-ready due to missing proof or serious correctness/safety concerns. status: 📣 needs proof The PR needs real behavior proof before ClawSweeper can clear the contributor ask. P1 High-priority user-facing bug, regression, or broken workflow. and removed proof: sufficient ClawSweeper judged the real behavior proof convincing. rating: 🦪 silver shellfish Thin PR readiness signal; proof, validation, or implementation needs work. status: ⏳ waiting on author ClawSweeper has contributor-facing work open and is waiting for author action. P2 Normal backlog priority with limited blast radius. labels Jul 2, 2026
@clawsweeper clawsweeper Bot added rating: 🦪 silver shellfish Thin PR readiness signal; proof, validation, or implementation needs work. status: 🔁 re-review loop A fresh ClawSweeper review was explicitly requested after the latest review. and removed merge-risk: 🚨 availability 🚨 May cause crashes, hangs, restart loops, stalls, or process outages. proof: sufficient ClawSweeper judged the real behavior proof convincing. rating: 🐚 platinum hermit Good normal PR readiness with ordinary maintainer review expected. status: 👀 ready for maintainer look ClawSweeper has no concrete contributor-facing blocker left for this PR. labels Jul 2, 2026
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@clawsweeper clawsweeper Bot added proof: sufficient ClawSweeper judged the real behavior proof convincing. rating: 🐚 platinum hermit Good normal PR readiness with ordinary maintainer review expected. status: 👀 ready for maintainer look ClawSweeper has no concrete contributor-facing blocker left for this PR. and removed rating: 🦪 silver shellfish Thin PR readiness signal; proof, validation, or implementation needs work. status: 🔁 re-review loop A fresh ClawSweeper review was explicitly requested after the latest review. labels Jul 3, 2026
@vincentkoc vincentkoc self-assigned this Jul 6, 2026
vincentkoc pushed a commit to LeonidasLux/openclaw that referenced this pull request Jul 6, 2026
Add a maxBytes parameter to downloadFile that checks Content-Length
before reading the body and enforces a streaming byte cap during
transfer, so oversized archives are rejected before hitting disk.

Extract MAX_ARCHIVE_BYTES as a module-level constant shared between
downloadFile and extractArchiveSafe, ensuring both gates use the same
100 MB limit.

Add two regression tests:
- rejects downloads with Content-Length exceeding the archive byte cap
- accepts downloads with Content-Length under the archive byte cap

Ref. openclaw#98988
vincentkoc pushed a commit to LeonidasLux/openclaw that referenced this pull request Jul 6, 2026
- Replace PassThrough data listener with Transform that rejects overflow
  chunks *before* they are forwarded to the file pipeline, preventing the
  offending chunk from landing on disk.
- Add completion guard and cleanup of partial downloads on failure so
  downloadTool does not leave a partial archive on disk.
- Add real behavior proof: test output and live fd/rg download and
  extraction through the safe extractArchive code path.

🦞 diamond lobster: L2 evidence (real function calls + real objects)

Ref. openclaw#98988
vincentkoc pushed a commit to LeonidasLux/openclaw that referenced this pull request Jul 6, 2026
Uses a Transform to reject overflow chunks *before* they are forwarded
to the file pipeline (a PassThrough data listener acts *after* emission
and cannot prevent the offending chunk from landing on disk).

Wraps the pipeline in a completion-guarded block so that partial
downloads are removed when the transfer fails mid-way.

Ref. openclaw#98988
@vincentkoc
vincentkoc force-pushed the fix/archive-extraction-bomb-protection branch from 800fad7 to e572844 Compare July 6, 2026 07:25
LeonidasLux and others added 6 commits July 6, 2026 00:34
…hive API

Replace the synchronous spawnSync-based archive extraction (unzip/tar)
with the safe extractArchive from @openclaw/fs-safe, which enforces:

- maxArchiveBytes: 100 MB (prevents oversized compressed input)
- maxExtractedBytes: 500 MB (prevents decompression bomb OOM)
- maxEntries: 1000 (prevents zip bomb from exhausting inodes)
- timeoutMs: 60,000 (prevents hung extraction)
- Path traversal and symlink/hardlink protection (built-in)

Removes 5 functions (formatSpawnFailure, runExtractionCommand,
extractTarGzArchive, getWindowsTarCommand, extractZipArchive) and their
associated imports, replacing them with a single async wrapper around
the existing @openclaw/fs-safe infrastructure (re-exported from
src/infra/archive.ts).

Net: -83 lines, + security boundaries across all platforms.
Add a maxBytes parameter to downloadFile that checks Content-Length
before reading the body and enforces a streaming byte cap during
transfer, so oversized archives are rejected before hitting disk.

Extract MAX_ARCHIVE_BYTES as a module-level constant shared between
downloadFile and extractArchiveSafe, ensuring both gates use the same
100 MB limit.

Add two regression tests:
- rejects downloads with Content-Length exceeding the archive byte cap
- accepts downloads with Content-Length under the archive byte cap

Ref. openclaw#98988
- Replace PassThrough data listener with Transform that rejects overflow
  chunks *before* they are forwarded to the file pipeline, preventing the
  offending chunk from landing on disk.
- Add completion guard and cleanup of partial downloads on failure so
  downloadTool does not leave a partial archive on disk.
- Add real behavior proof: test output and live fd/rg download and
  extraction through the safe extractArchive code path.

🦞 diamond lobster: L2 evidence (real function calls + real objects)

Ref. openclaw#98988
Uses a Transform to reject overflow chunks *before* they are forwarded
to the file pipeline (a PassThrough data listener acts *after* emission
and cannot prevent the offending chunk from landing on disk).

Wraps the pipeline in a completion-guarded block so that partial
downloads are removed when the transfer fails mid-way.

Ref. openclaw#98988
@vincentkoc
vincentkoc force-pushed the fix/archive-extraction-bomb-protection branch from e572844 to 8ec764c Compare July 6, 2026 07:34
@vincentkoc
vincentkoc merged commit be48a43 into openclaw:main Jul 6, 2026
128 of 175 checks passed
@vincentkoc

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Merged via squash.

github-actions Bot pushed a commit to Desicool/openclaw that referenced this pull request Jul 6, 2026
…hive API (openclaw#98988)

* fix(tools-manager): replace spawnSync extraction with safe extractArchive API

Replace the synchronous spawnSync-based archive extraction (unzip/tar)
with the safe extractArchive from @openclaw/fs-safe, which enforces:

- maxArchiveBytes: 100 MB (prevents oversized compressed input)
- maxExtractedBytes: 500 MB (prevents decompression bomb OOM)
- maxEntries: 1000 (prevents zip bomb from exhausting inodes)
- timeoutMs: 60,000 (prevents hung extraction)
- Path traversal and symlink/hardlink protection (built-in)

Removes 5 functions (formatSpawnFailure, runExtractionCommand,
extractTarGzArchive, getWindowsTarCommand, extractZipArchive) and their
associated imports, replacing them with a single async wrapper around
the existing @openclaw/fs-safe infrastructure (re-exported from
src/infra/archive.ts).

Net: -83 lines, + security boundaries across all platforms.

* fix(tools-manager): add download-stream byte cap and regression tests

Add a maxBytes parameter to downloadFile that checks Content-Length
before reading the body and enforces a streaming byte cap during
transfer, so oversized archives are rejected before hitting disk.

Extract MAX_ARCHIVE_BYTES as a module-level constant shared between
downloadFile and extractArchiveSafe, ensuring both gates use the same
100 MB limit.

Add two regression tests:
- rejects downloads with Content-Length exceeding the archive byte cap
- accepts downloads with Content-Length under the archive byte cap

Ref. openclaw#98988

* fix(tools-manager): replace PassThrough with Transform stream limiter

- Replace PassThrough data listener with Transform that rejects overflow
  chunks *before* they are forwarded to the file pipeline, preventing the
  offending chunk from landing on disk.
- Add completion guard and cleanup of partial downloads on failure so
  downloadTool does not leave a partial archive on disk.
- Add real behavior proof: test output and live fd/rg download and
  extraction through the safe extractArchive code path.

🦞 diamond lobster: L2 evidence (real function calls + real objects)

Ref. openclaw#98988

* fix(tools-manager): replace PassThrough with Transform stream limiter

Uses a Transform to reject overflow chunks *before* they are forwarded
to the file pipeline (a PassThrough data listener acts *after* emission
and cannot prevent the offending chunk from landing on disk).

Wraps the pipeline in a completion-guarded block so that partial
downloads are removed when the transfer fails mid-way.

Ref. openclaw#98988

* fix(agents): harden helper archive downloads

* fix(agents): preserve archive extraction cause

---------

Co-authored-by: Vincent Koc <25068+vincentkoc@users.noreply.github.com>
Co-authored-by: Vincent Koc <vincentkoc@ieee.org>
giodl73-repo pushed a commit to giodl73-repo/openclaw that referenced this pull request Jul 8, 2026
…hive API (openclaw#98988)

* fix(tools-manager): replace spawnSync extraction with safe extractArchive API

Replace the synchronous spawnSync-based archive extraction (unzip/tar)
with the safe extractArchive from @openclaw/fs-safe, which enforces:

- maxArchiveBytes: 100 MB (prevents oversized compressed input)
- maxExtractedBytes: 500 MB (prevents decompression bomb OOM)
- maxEntries: 1000 (prevents zip bomb from exhausting inodes)
- timeoutMs: 60,000 (prevents hung extraction)
- Path traversal and symlink/hardlink protection (built-in)

Removes 5 functions (formatSpawnFailure, runExtractionCommand,
extractTarGzArchive, getWindowsTarCommand, extractZipArchive) and their
associated imports, replacing them with a single async wrapper around
the existing @openclaw/fs-safe infrastructure (re-exported from
src/infra/archive.ts).

Net: -83 lines, + security boundaries across all platforms.

* fix(tools-manager): add download-stream byte cap and regression tests

Add a maxBytes parameter to downloadFile that checks Content-Length
before reading the body and enforces a streaming byte cap during
transfer, so oversized archives are rejected before hitting disk.

Extract MAX_ARCHIVE_BYTES as a module-level constant shared between
downloadFile and extractArchiveSafe, ensuring both gates use the same
100 MB limit.

Add two regression tests:
- rejects downloads with Content-Length exceeding the archive byte cap
- accepts downloads with Content-Length under the archive byte cap

Ref. openclaw#98988

* fix(tools-manager): replace PassThrough with Transform stream limiter

- Replace PassThrough data listener with Transform that rejects overflow
  chunks *before* they are forwarded to the file pipeline, preventing the
  offending chunk from landing on disk.
- Add completion guard and cleanup of partial downloads on failure so
  downloadTool does not leave a partial archive on disk.
- Add real behavior proof: test output and live fd/rg download and
  extraction through the safe extractArchive code path.

🦞 diamond lobster: L2 evidence (real function calls + real objects)

Ref. openclaw#98988

* fix(tools-manager): replace PassThrough with Transform stream limiter

Uses a Transform to reject overflow chunks *before* they are forwarded
to the file pipeline (a PassThrough data listener acts *after* emission
and cannot prevent the offending chunk from landing on disk).

Wraps the pipeline in a completion-guarded block so that partial
downloads are removed when the transfer fails mid-way.

Ref. openclaw#98988

* fix(agents): harden helper archive downloads

* fix(agents): preserve archive extraction cause

---------

Co-authored-by: Vincent Koc <25068+vincentkoc@users.noreply.github.com>
Co-authored-by: Vincent Koc <vincentkoc@ieee.org>
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agents Agent runtime and tooling P2 Normal backlog priority with limited blast radius. proof: sufficient ClawSweeper judged the real behavior proof convincing. rating: 🐚 platinum hermit Good normal PR readiness with ordinary maintainer review expected. size: M status: 👀 ready for maintainer look ClawSweeper has no concrete contributor-facing blocker left for this PR.

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