"""
Code Execution Security Tests
Tests for TypeScript code execution security, including
sandbox escape attempts, resource limits, and credential protection.
Test Coverage:
- TC-3.1: Sandbox Security
- TC-3.2: Code Execution Audit
"""
import pytest
import os
import tempfile
import time
from pathlib import Path
from unittest.mock import Mock, patch, MagicMock
class TestSandboxSecurity:
"""Test code execution sandboxing and isolation."""
@pytest.mark.skip(reason="Sandboxing not yet fully implemented")
def test_file_system_access_restriction(self):
"""TC-3.1.1: Attempt file system access outside temp directory."""
# Test code that tries to read /etc/passwd
malicious_code = """
import * as fs from 'fs';
const data = fs.readFileSync('/etc/passwd', 'utf8');
console.log(data);
"""
# Execute and verify access denied
# This would use the execute_typescript tool
# Expected: Access denied or error
@pytest.mark.skip(reason="Network restrictions not yet implemented")
def test_network_access_restriction(self):
"""TC-3.1.2: Attempt network access to unauthorized hosts."""
# Test code that tries to connect to external IP
malicious_code = """
import https from 'https';
https.get('https://evil.com', (res) => {
console.log('Connected!');
});
"""
# Execute and verify network access blocked
# Expected: Connection refused or timeout
@pytest.mark.skip(reason="Credential protection needs enhancement")
def test_credential_theft_prevention(self):
"""TC-3.1.3: Attempt credential theft."""
# Test code that tries to access environment variables
malicious_code = """
const token = process.env.CANVAS_API_TOKEN;
console.log('Token:', token);
"""
# Execute and verify credentials not accessible
# Expected: Undefined or access denied
def test_resource_exhaustion_timeout(self):
"""TC-3.1.4: Test timeout protection for infinite loops."""
# Test code with infinite loop
infinite_loop_code = """
while (true) {
// Infinite loop
}
"""
# Execute with timeout
# Expected: Timeout after configured limit (120s default)
# Verify process is terminated
@pytest.mark.skip(reason="Memory limits not yet implemented")
def test_memory_exhaustion_protection(self):
"""TC-3.1.4: Test memory limit enforcement."""
# Test code that allocates excessive memory
memory_bomb_code = """
const arr = [];
while (true) {
arr.push(new Array(1000000).fill('x'));
}
"""
# Execute and verify memory limit enforced
# Expected: Out of memory error or process killed
@pytest.mark.skip(reason="Command execution protection needed")
def test_shell_execution_blocked(self):
"""TC-3.1.5: Test that shell commands are blocked."""
# Test code that tries to spawn shell
shell_code = """
import { exec } from 'child_process';
exec('ls -la /', (error, stdout, stderr) => {
console.log(stdout);
});
"""
# Execute and verify shell execution blocked
# Expected: Permission denied or execution blocked
def test_temporary_file_cleanup(self):
"""TC-3.1.6: Verify temporary files are cleaned up."""
# Test that temporary files created during execution are deleted
# This is mentioned as implemented in the docs
# Create test directory
temp_dir = tempfile.mkdtemp()
temp_file = Path(temp_dir) / "test.ts"
# Simulate code execution file
temp_file.write_text("console.log('test');")
# Verify file is deleted after execution
# In real implementation, this would be done by execute_typescript
assert temp_file.exists() # Before cleanup
# Simulate cleanup
temp_file.unlink()
assert not temp_file.exists() # After cleanup
class TestCodeExecutionAudit:
"""Test code execution audit logging."""
@pytest.mark.skip(reason="Code execution logging not yet implemented")
def test_code_execution_logged(self):
"""TC-3.2.1: Verify code execution is logged."""
# Test that code execution creates audit log entry
# Log should contain: timestamp, code hash, user, result
pass
@pytest.mark.skip(reason="Code execution logging not yet implemented")
def test_code_execution_errors_logged(self):
"""TC-3.2.2: Verify code execution errors are logged."""
# Test that failed executions are logged
pass
@pytest.mark.skip(reason="Code execution logging not yet implemented")
def test_sensitive_output_sanitized(self):
"""TC-3.2.3: Verify sensitive data in output is sanitized."""
# Test that PII or credentials in execution output are masked
pass
class TestCodeExecutionConfiguration:
"""Test code execution configuration and limits."""
def test_timeout_configurable(self):
"""Verify code execution timeout is configurable."""
# Check that timeout can be configured
# Default is 120 seconds as per docs
default_timeout = 120
# Verify default timeout
# Implementation depends on how timeout is configured
@pytest.mark.skip(reason="Resource limits not yet configurable")
def test_resource_limits_configurable(self):
"""Verify resource limits can be configured."""
# Test that memory, CPU limits can be configured
pass
class TestMaliciousCodeDetection:
"""Test detection of malicious code patterns."""
@pytest.mark.skip(reason="Static code analysis not yet implemented")
def test_dangerous_imports_detected(self):
"""Test detection of dangerous imports."""
# Code with dangerous imports like child_process, fs, net
dangerous_code = """
import { exec } from 'child_process';
import * as fs from 'fs';
"""
# Verify dangerous imports are detected/blocked
@pytest.mark.skip(reason="Static code analysis not yet implemented")
def test_obfuscated_code_detected(self):
"""Test detection of obfuscated code."""
# Heavily obfuscated code
obfuscated_code = """
eval(atob('Y29uc29sZS5sb2coJ21hbGljaW91cycpOw=='));
"""
# Verify obfuscation is detected
class TestCodeExecutionIsolation:
"""Test execution environment isolation."""
def test_execution_in_temp_directory(self):
"""Verify code executes in temporary directory."""
# Test that execution happens in isolated temp directory
# Not in project directory or user home
pass
@pytest.mark.skip(reason="Environment isolation needs verification")
def test_limited_environment_variables(self):
"""Test that only necessary environment variables are passed."""
# Verify minimal environment exposure
# Only CANVAS_API_TOKEN and required vars should be available
pass
if __name__ == "__main__":
pytest.main([__file__, "-v"])
