Enhance ChatAgent with file navigation, web browsing, scratchpad tools, and write security guardrails#495
Enhance ChatAgent with file navigation, web browsing, scratchpad tools, and write security guardrails#495kovtcharov wants to merge 3 commits intomainfrom
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- Enhanced PathValidator with write guardrails: blocked system directories, sensitive file protection (.env, credentials, keys), size limits (10 MB), overwrite confirmation prompts, timestamped backups, and audit logging - Fixed ChatAgent write_file (had zero security checks) and added edit_file tool - Fixed CodeAgent generic write_file and edit_file (missing PathValidator) - Added FileSystemToolsMixin: browse_directory, tree, find_files, file_info, read_file with smart type detection, bookmarks - Added BrowserToolsMixin: fetch_page, search_web, download_file - Added ScratchpadToolsMixin: SQLite-backed data analysis tables - Added FileSystemIndexService: persistent file index with FTS5 full-text search - Added WebClient: HTTP client with rate limiting and content extraction - Integrated all new tools into ChatAgent with config toggles - 95 unit tests for write guardrails (all passing)
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| def test_rate_limit_tracks_domains(self): | ||
| """Rate limit state is per-domain.""" | ||
| self.client._rate_limit_wait("example.com") | ||
| assert "example.com" in self.client._domain_last_request |
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Incomplete URL substring sanitization High test
| """Different domains don't share rate limit state.""" | ||
| self.client._rate_limit_wait("a.com") | ||
| self.client._rate_limit_wait("b.com") | ||
| assert "a.com" in self.client._domain_last_request |
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Incomplete URL substring sanitization High test
| self.client._rate_limit_wait("a.com") | ||
| self.client._rate_limit_wait("b.com") | ||
| assert "a.com" in self.client._domain_last_request | ||
| assert "b.com" in self.client._domain_last_request |
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Incomplete URL substring sanitization High test
| result = self.registered_tools["search_web"]("python tutorial") | ||
| assert "1. Python Docs" in result | ||
| assert "2. Real Python" in result | ||
| assert "https://docs.python.org" in result |
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Incomplete URL substring sanitization High test
kovtcharov
changed the title
Fix black/isort formatting across all modified files to pass CI lint checks. Address all 17 open CodeQL code scanning alerts: Python: Add path traversal validation with realpath/symlink checks (EMR server), sanitize API responses to strip stack traces, restrict returned fields from clear_database endpoint, redact URLs in Jira agent logs. JavaScript: Add final path validation in eval webapp server, sanitize redirect URLs to reject protocol-relative paths, add in-memory rate limiters to docs server and dev server, remove identity replacement no-op, add crossorigin attributes to CDN scripts, add HTML sanitizer for XSS prevention in Jira webui, replace innerHTML with safe DOM APIs for user messages. Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
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| sanitizeHTML(html) { | ||
| const div = document.createElement('div'); | ||
| div.innerHTML = html; |
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DOM text reinterpreted as HTML High
| // Remove event handlers and javascript: URLs | ||
| div.querySelectorAll('*').forEach(el => { | ||
| [...el.attributes].forEach(attr => { | ||
| if (attr.name.startsWith('on') || (attr.name === 'href' && attr.value.trimStart().toLowerCase().startsWith('javascript:'))) { |
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Incomplete URL scheme check High
| res.redirect(303, parsed.pathname); | ||
| // Sanitize pathname to prevent protocol-relative URLs (e.g., //evil.com) | ||
| const safePath = parsed.pathname.startsWith('/') && !parsed.pathname.startsWith('//') ? parsed.pathname : '/'; | ||
| res.redirect(303, safePath); |
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Server-side URL redirect Medium documentation
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| sanitizeHTML(html) { | ||
| const div = document.createElement('div'); | ||
| div.innerHTML = html; |
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Exception text reinterpreted as HTML Medium
| <script src="https://cdnjs.cloudflare.com/ajax/libs/html2canvas/1.4.1/html2canvas.min.js"></script> | ||
| <script src="https://cdnjs.cloudflare.com/ajax/libs/jspdf/2.5.1/jspdf.umd.min.js"></script> | ||
| <script src="https://cdnjs.cloudflare.com/ajax/libs/html2canvas/1.4.1/html2canvas.min.js" crossorigin="anonymous"></script> | ||
| <script src="https://cdnjs.cloudflare.com/ajax/libs/jspdf/2.5.1/jspdf.umd.min.js" crossorigin="anonymous"></script> |
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Inclusion of functionality from an untrusted source Medium
| text = re.sub( | ||
| r"Traceback \(most recent call last\):.*?(?=\n\S|\Z)", | ||
| "[internal details removed]", | ||
| text, |
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Polynomial regular expression used on uncontrolled data High
| flags=re.DOTALL, | ||
| ) | ||
| # Remove individual "File ..." lines from stack traces | ||
| text = re.sub(r'^\s*File ".*?", line \d+.*$', "", text, flags=re.MULTILINE) |
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| # Remove exception class names like "ValueError: ..." or "KeyError: ..." | ||
| text = re.sub(r"\b\w*(Error|Exception)\b:\s*", "", text) | ||
| # Remove internal file paths (Unix and Windows) | ||
| text = re.sub(r"(/[\w./\\-]+\.py|[A-Z]:\\[\w.\\-]+\.py)", "[path]", text) |
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| # Resolve the path and validate it points to a safe location | ||
| # Security: intentional validation of user-supplied path # nosec | ||
| new_dir = Path(raw_watch_dir).expanduser().resolve() |
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Uncontrolled data used in path expression High
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| logger.debug(f"Making API request to: {url}") | ||
| # Log only the path component to avoid exposing sensitive URL data | ||
| logger.debug(f"Making API request to: {urlparse(url).path}") |
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Clear-text logging of sensitive information High
| return { | ||
| "success": result.get("success", True), | ||
| "deleted": result.get("deleted", {}), | ||
| "message": result.get("message", "Database cleared successfully"), | ||
| } |
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Information exposure through an exception Medium
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@claude review this PR. |
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Claude finished @kovtcharov's task —— View job PR Review Complete
Overall Assessment: ✅ Approve with Minor SuggestionsThis is a well-designed, security-conscious PR that adds significant functionality to the ChatAgent. The write security guardrails, SSRF prevention, and audit logging are particularly well-implemented. Below are my detailed findings. 🟢 StrengthsSecurity Module (
Web Client (
Scratchpad Service (
CodeAgent File I/O (
🟡 Minor Issues (Non-blocking)1. CodeQL Alert: URL Substring Sanitization in Tests The CodeQL alerts about URL substring sanitization are false positives in this context. These are unit tests validating rate limiter domain tracking, not security-sensitive URL validation. The test code: self.client._rate_limit_wait("example.com")
assert "example.com" in self.client._domain_last_requestis simply checking that domains are correctly stored in the rate limit tracking dictionary. No action needed. 2. CodeQL Alert: DOM Text as HTML The // Current check:
if (attr.name === 'href' && attr.value.trimStart().toLowerCase().startsWith('javascript:'))
// Suggested enhancement:
const dangerousSchemes = ['javascript:', 'data:', 'vbscript:'];
if (attr.name === 'href' && dangerousSchemes.some(s => attr.value.trimStart().toLowerCase().startsWith(s)))3. CodeQL Alert: Polynomial Regex The regex patterns in 4. Potential Enhancement: Browser Tools Path Validation The # After path validation:
is_blocked, reason = mixin._path_validator.is_write_blocked(resolved_dir)
if is_blocked:
return f"Error: {reason}"🔴 Security Alerts from CodeQL (Already Addressed or Pre-existing)The following alerts appear to be pre-existing issues or already addressed in this PR:
📋 Test CoverageThe test coverage is excellent:
SummaryThis PR significantly improves GAIA's security posture by:
The minor suggestions above are non-blocking. The code is ready to merge. |
2 participants
Summary
This PR adds comprehensive file system navigation, web browsing tools, structured data analysis, and write security guardrails to the ChatAgent.
Write Security Guardrails (
src/gaia/security.py)C:\Windows,Program Files) and Unix (/etc,/bin,/usr/lib) system paths are blocked for writes.env,credentials.json, SSH keys (id_rsa,id_ed25519), certificates (.pem,.key,.crt), and other secrets are never writable.bakcopies created before file modification~/.gaia/cache/file_audit.logwith timestamp, operation type, path, size, and statusos.path.realpath()to prevent TOCTOU bypasswrite_file: Previously had zero security checks — now enforces full PathValidator + write guardrailswrite_file/edit_file: Generic file tools were missing PathValidator — now enforcedFile System Navigation Tools (
src/gaia/agents/tools/filesystem_tools.py)browse_directory: List folder contents with file sizes, dates, and type indicatorstree: Visual directory tree with configurable depth, exclusion patterns, and platform-aware defaultsfind_files: Search by name, content, size, date, and file type with multi-scope search (current dir → common locations → full drives)file_info: Detailed metadata — size, type, MIME, modification date, line counts, PDF page countsread_file: Smart file reading with type detection — text, CSV (tabular), JSON (formatted), PDF (text extraction)bookmark: Save, list, and remove bookmarks for quick access to important locationsFile System Index Service (
src/gaia/filesystem/)FileSystemIndexService: Persistent SQLite-backed file index with FTS5 full-text searchauto_categorize: Automatic file categorization by extension (code, document, spreadsheet, image, video, audio, data, archive, config)Browser Tools (
src/gaia/agents/tools/browser_tools.py)fetch_page: Fetch web pages with content extraction modes — readable text, raw HTML, links, or tables as JSONsearch_web: DuckDuckGo web search (no API key required) with configurable result countdownload_file: Download files from the web to local disk with size limits and path validationWeb Client (
src/gaia/web/client.py)file://,ftp://), blocked ports (SSH, SMTP, DB ports), private IP detectionScratchpad Tools (
src/gaia/agents/tools/scratchpad_tools.py)create_table: Create SQLite tables for structured data accumulationinsert_data: Insert rows from extracted document dataquery_data: Run SQL queries (SELECT only) with formatted results — supports SUM, AVG, GROUP BY for analysislist_tables: Show all scratchpad tables with row counts and schemasdrop_table: Clean up tables when analysis is completeScratchpad Service (
src/gaia/scratchpad/service.py)scratch_) to isolate scratchpad dataChatAgent Integration (
src/gaia/agents/chat/agent.py)FileSystemToolsMixin,ScratchpadToolsMixin, andBrowserToolsMixinenable_filesystem,enable_scratchpad,enable_browser(all default toTrue)search_file/search_directorytools with enhancedfind_files/browse_directoryCI Updates (
.github/workflows/test_unit.yml)beautifulsoup4andrequeststo test dependencies for browser tool testsNew Modules
src/gaia/filesystem/index.py,categorizer.pysrc/gaia/web/client.pysrc/gaia/scratchpad/service.pysrc/gaia/agents/tools/filesystem_tools.pysrc/gaia/agents/tools/browser_tools.pysrc/gaia/agents/tools/scratchpad_tools.pyTest Coverage
test_file_write_guardrails.pytest_security_edge_cases.pytest_filesystem_tools_mixin.pytest_filesystem_index.pytest_categorizer.pytest_browser_tools.pytest_web_client_edge_cases.pytest_scratchpad_service.pytest_scratchpad_tools_mixin.pytest_service_edge_cases.pytest_chat_agent_integration.pyTest plan
.envblocked, edit creates backupgaia chatand test file browsing, web search, scratchpad tools~/.gaia/cache/file_audit.logafter write operations🤖 Generated with Claude Code