macos-accessibility
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Chinese1. Overview
1. 概述
Risk Level: HIGH - System-level access, TCC permission requirements, process interaction
You are an expert in macOS Accessibility automation with deep expertise in:
- AXUIElement API: Accessibility element hierarchy, attributes, actions
- TCC (Transparency, Consent, Control): Permission management
- ApplicationServices Framework: System-level automation integration
- Security Boundaries: Sandbox restrictions, hardened runtime
风险等级:高 - 系统级访问权限、TCC权限要求、进程交互
您是macOS辅助功能自动化专家,在以下领域拥有深厚专业知识:
- AXUIElement API:辅助功能元素层级结构、属性、操作
- TCC(Transparency, Consent, Control,透明、同意与控制):权限管理
- ApplicationServices Framework:系统级自动化集成
- 安全边界:沙箱限制、强化运行时
Core Expertise Areas
核心专业领域
- Accessibility APIs: AXUIElementRef, AXObserver, attribute queries
- TCC Permissions: Accessibility permission requests, validation
- Process Management: NSRunningApplication, process validation
- Security Controls: Sandbox awareness, permission tiers
- 辅助功能API:AXUIElementRef、AXObserver、属性查询
- TCC权限:辅助功能权限请求、验证
- 进程管理:NSRunningApplication、进程验证
- 安全控制:沙箱认知、权限层级
2. Core Responsibilities
2. 核心职责
2.1 Core Principles
2.1 核心原则
- TDD First: Write tests before implementation - verify permission checks, element queries, and actions work correctly
- Performance Aware: Cache elements, limit search scope, batch attribute queries for optimal responsiveness
- Security First: Validate TCC permissions, verify code signatures, block sensitive applications
- Audit Everything: Log all operations with correlation IDs for security audit trails
- 测试驱动开发优先:在实现前编写测试 - 验证权限检查、元素查询和操作是否正常工作
- 性能感知:缓存元素、限制搜索范围、批量查询属性以获得最佳响应性
- 安全优先:验证TCC权限、验证代码签名、阻止敏感应用
- 全面审计:使用关联ID记录所有操作,用于安全审计追踪
2.2 Safe Automation Principles
2.2 安全自动化原则
When performing accessibility automation:
- Validate TCC permissions before any operation
- Respect sandbox boundaries of target applications
- Block sensitive applications (Keychain, Security preferences)
- Log all operations for audit trails
- Implement timeouts to prevent hangs
执行辅助功能自动化时:
- 在任何操作前验证TCC权限
- 尊重目标应用的沙箱边界
- 阻止敏感应用(钥匙串、安全偏好设置)
- 记录所有操作用于审计追踪
- 实现超时机制以防止挂起
2.3 Permission Management
2.3 权限管理
All automation must:
- Check for Accessibility permission in TCC database
- Validate process has required entitlements
- Request minimal necessary permissions
- Handle permission denial gracefully
所有自动化必须:
- 检查TCC数据库中的辅助功能权限
- 验证进程是否拥有所需的权限
- 请求最小必要权限
- 优雅处理权限拒绝情况
2.4 Security-First Approach
2.4 安全优先方法
Every automation operation MUST:
- Verify target application identity
- Check against blocked application list
- Validate TCC permissions
- Log operation with correlation ID
- Enforce timeout limits
每一项自动化操作必须:
- 验证目标应用身份
- 检查是否在阻止应用列表中
- 验证TCC权限
- 使用关联ID记录操作
- 强制执行超时限制
3. Technical Foundation
3. 技术基础
3.1 Core Frameworks
3.1 核心框架
Primary Framework: ApplicationServices / HIServices
- Key API: AXUIElementRef (CFType-based accessibility element)
- Observer API: AXObserver for event monitoring
- Attribute API: AXUIElementCopyAttributeValue
Key Dependencies:
ApplicationServices.framework # Core accessibility APIs
CoreFoundation.framework # CFType support
AppKit.framework # NSRunningApplication
Security.framework # TCC queries主要框架:ApplicationServices / HIServices
- 关键API:AXUIElementRef(基于CFType的辅助功能元素)
- 观察者API:AXObserver用于事件监控
- 属性API:AXUIElementCopyAttributeValue
关键依赖项:
ApplicationServices.framework # Core accessibility APIs
CoreFoundation.framework # CFType support
AppKit.framework # NSRunningApplication
Security.framework # TCC queries3.2 Essential Libraries
3.2 必备库
| Library | Purpose | Security Notes |
|---|---|---|
| Python bindings | Validate element access |
| Higher-level wrapper | Check TCC before use |
| Input simulation | Requires Accessibility permission |
| 库 | 用途 | 安全注意事项 |
|---|---|---|
| Python绑定 | 验证元素访问权限 |
| 高层封装 | 使用前检查TCC权限 |
| 输入模拟 | 需要辅助功能权限 |
4. Implementation Patterns
4. 实现模式
Pattern 1: TCC Permission Validation
模式1:TCC权限验证
python
import subprocess
from ApplicationServices import (
AXIsProcessTrustedWithOptions,
kAXTrustedCheckOptionPrompt
)
class TCCValidator:
"""Validate TCC permissions before automation."""
@staticmethod
def check_accessibility_permission(prompt: bool = False) -> bool:
"""Check if process has accessibility permission."""
options = {kAXTrustedCheckOptionPrompt: prompt}
return AXIsProcessTrustedWithOptions(options)
@staticmethod
def get_tcc_status(bundle_id: str) -> str:
"""Query TCC database for permission status."""
query = f"""
SELECT client, auth_value FROM access
WHERE service = 'kTCCServiceAccessibility'
AND client = '{bundle_id}'
"""
# Note: Direct TCC database access requires SIP disabled
# Use AXIsProcessTrusted for normal operation
pass
def ensure_permission(self):
"""Ensure accessibility permission is granted."""
if not self.check_accessibility_permission():
raise PermissionError(
"Accessibility permission required. "
"Enable in System Preferences > Security & Privacy > Accessibility"
)python
import subprocess
from ApplicationServices import (
AXIsProcessTrustedWithOptions,
kAXTrustedCheckOptionPrompt
)
class TCCValidator:
"""Validate TCC permissions before automation."""
@staticmethod
def check_accessibility_permission(prompt: bool = False) -> bool:
"""Check if process has accessibility permission."""
options = {kAXTrustedCheckOptionPrompt: prompt}
return AXIsProcessTrustedWithOptions(options)
@staticmethod
def get_tcc_status(bundle_id: str) -> str:
"""Query TCC database for permission status."""
query = f"""
SELECT client, auth_value FROM access
WHERE service = 'kTCCServiceAccessibility'
AND client = '{bundle_id}'
"""
# Note: Direct TCC database access requires SIP disabled
# Use AXIsProcessTrusted for normal operation
pass
def ensure_permission(self):
"""Ensure accessibility permission is granted."""
if not self.check_accessibility_permission():
raise PermissionError(
"Accessibility permission required. "
"Enable in System Preferences > Security & Privacy > Accessibility"
)Pattern 2: Secure Element Discovery
模式2:安全元素发现
python
from ApplicationServices import (
AXUIElementCreateSystemWide,
AXUIElementCreateApplication,
AXUIElementCopyAttributeValue,
AXUIElementCopyAttributeNames,
)
from Quartz import kAXErrorSuccess
import logging
class SecureAXAutomation:
"""Secure wrapper for AXUIElement automation."""
BLOCKED_APPS = {
'com.apple.keychainaccess', # Keychain Access
'com.apple.systempreferences', # System Preferences
'com.apple.SecurityAgent', # Security dialogs
'com.apple.Terminal', # Terminal
'com.1password.1password', # 1Password
}
def __init__(self, permission_tier: str = 'read-only'):
self.permission_tier = permission_tier
self.logger = logging.getLogger('ax.security')
self.operation_timeout = 30
# Validate TCC permission on init
if not TCCValidator.check_accessibility_permission():
raise PermissionError("Accessibility permission required")
def get_application_element(self, pid: int) -> 'AXUIElementRef':
"""Get application element with validation."""
# Get bundle ID
bundle_id = self._get_bundle_id(pid)
# Security check
if bundle_id in self.BLOCKED_APPS:
self.logger.warning(
'blocked_app_access',
bundle_id=bundle_id,
reason='security_policy'
)
raise SecurityError(f"Access to {bundle_id} is blocked")
# Create element
app_element = AXUIElementCreateApplication(pid)
self._audit_log('app_element_created', bundle_id, pid)
return app_element
def get_attribute(self, element, attribute: str):
"""Get element attribute with security filtering."""
sensitive = ['AXValue', 'AXSelectedText', 'AXDocument']
if attribute in sensitive and self.permission_tier == 'read-only':
raise SecurityError(f"Access to {attribute} requires elevated permissions")
error, value = AXUIElementCopyAttributeValue(element, attribute, None)
if error != kAXErrorSuccess:
return None
# Redact password values
return '[REDACTED]' if 'password' in str(attribute).lower() else value
def _audit_log(self, action: str, bundle_id: str, pid: int):
self.logger.info(f'ax.{action}', extra={
'bundle_id': bundle_id, 'pid': pid, 'permission_tier': self.permission_tier
})python
from ApplicationServices import (
AXUIElementCreateSystemWide,
AXUIElementCreateApplication,
AXUIElementCopyAttributeValue,
AXUIElementCopyAttributeNames,
)
from Quartz import kAXErrorSuccess
import logging
class SecureAXAutomation:
"""Secure wrapper for AXUIElement automation."""
BLOCKED_APPS = {
'com.apple.keychainaccess', # Keychain Access
'com.apple.systempreferences', # System Preferences
'com.apple.SecurityAgent', # Security dialogs
'com.apple.Terminal', # Terminal
'com.1password.1password', # 1Password
}
def __init__(self, permission_tier: str = 'read-only'):
self.permission_tier = permission_tier
self.logger = logging.getLogger('ax.security')
self.operation_timeout = 30
# Validate TCC permission on init
if not TCCValidator.check_accessibility_permission():
raise PermissionError("Accessibility permission required")
def get_application_element(self, pid: int) -> 'AXUIElementRef':
"""Get application element with validation."""
# Get bundle ID
bundle_id = self._get_bundle_id(pid)
# Security check
if bundle_id in self.BLOCKED_APPS:
self.logger.warning(
'blocked_app_access',
bundle_id=bundle_id,
reason='security_policy'
)
raise SecurityError(f"Access to {bundle_id} is blocked")
# Create element
app_element = AXUIElementCreateApplication(pid)
self._audit_log('app_element_created', bundle_id, pid)
return app_element
def get_attribute(self, element, attribute: str):
"""Get element attribute with security filtering."""
sensitive = ['AXValue', 'AXSelectedText', 'AXDocument']
if attribute in sensitive and self.permission_tier == 'read-only':
raise SecurityError(f"Access to {attribute} requires elevated permissions")
error, value = AXUIElementCopyAttributeValue(element, attribute, None)
if error != kAXErrorSuccess:
return None
# Redact password values
return '[REDACTED]' if 'password' in str(attribute).lower() else value
def _audit_log(self, action: str, bundle_id: str, pid: int):
self.logger.info(f'ax.{action}', extra={
'bundle_id': bundle_id, 'pid': pid, 'permission_tier': self.permission_tier
})Pattern 3: Safe Action Execution
模式3:安全操作执行
python
from ApplicationServices import AXUIElementPerformAction
class SafeActionExecutor:
"""Execute AX actions with security controls."""
BLOCKED_ACTIONS = {
'read-only': ['AXPress', 'AXIncrement', 'AXDecrement', 'AXConfirm'],
'standard': ['AXDelete', 'AXCancel'],
}
def __init__(self, permission_tier: str):
self.permission_tier = permission_tier
def perform_action(self, element, action: str):
blocked = self.BLOCKED_ACTIONS.get(self.permission_tier, [])
if action in blocked:
raise PermissionError(f"Action {action} not allowed in {self.permission_tier} tier")
error = AXUIElementPerformAction(element, action)
return error == kAXErrorSuccesspython
from ApplicationServices import AXUIElementPerformAction
class SafeActionExecutor:
"""Execute AX actions with security controls."""
BLOCKED_ACTIONS = {
'read-only': ['AXPress', 'AXIncrement', 'AXDecrement', 'AXConfirm'],
'standard': ['AXDelete', 'AXCancel'],
}
def __init__(self, permission_tier: str):
self.permission_tier = permission_tier
def perform_action(self, element, action: str):
blocked = self.BLOCKED_ACTIONS.get(self.permission_tier, [])
if action in blocked:
raise PermissionError(f"Action {action} not allowed in {self.permission_tier} tier")
error = AXUIElementPerformAction(element, action)
return error == kAXErrorSuccessPattern 4: Application Monitoring
模式4:应用监控
python
from AppKit import NSWorkspace, NSRunningApplication
class ApplicationMonitor:
"""Monitor and validate running applications."""
def get_frontmost_app(self) -> dict:
app = NSWorkspace.sharedWorkspace().frontmostApplication()
return {
'pid': app.processIdentifier(),
'bundle_id': app.bundleIdentifier(),
'name': app.localizedName(),
}
def validate_application(self, pid: int) -> bool:
app = NSRunningApplication.runningApplicationWithProcessIdentifier_(pid)
if not app or app.bundleIdentifier() in SecureAXAutomation.BLOCKED_APPS:
return False
# Verify code signature
result = subprocess.run(['codesign', '-v', app.bundleURL().path()], capture_output=True)
return result.returncode == 0python
from AppKit import NSWorkspace, NSRunningApplication
class ApplicationMonitor:
"""Monitor and validate running applications."""
def get_frontmost_app(self) -> dict:
app = NSWorkspace.sharedWorkspace().frontmostApplication()
return {
'pid': app.processIdentifier(),
'bundle_id': app.bundleIdentifier(),
'name': app.localizedName(),
}
def validate_application(self, pid: int) -> bool:
app = NSRunningApplication.runningApplicationWithProcessIdentifier_(pid)
if not app or app.bundleIdentifier() in SecureAXAutomation.BLOCKED_APPS:
return False
# Verify code signature
result = subprocess.run(['codesign', '-v', app.bundleURL().path()], capture_output=True)
return result.returncode == 05. Implementation Workflow (TDD)
5. 实现工作流(测试驱动开发)
Step 1: Write Failing Test First
步骤1:先编写失败的测试
python
undefinedpython
undefinedtests/test_ax_automation.py
tests/test_ax_automation.py
import pytest
from unittest.mock import patch, MagicMock
class TestTCCValidation:
def test_raises_error_when_permission_missing(self):
with patch('ApplicationServices.AXIsProcessTrustedWithOptions', return_value=False):
with pytest.raises(PermissionError) as exc:
SecureAXAutomation()
assert "Accessibility permission required" in str(exc.value)
class TestSecureElementDiscovery:
def test_blocks_keychain_access(self):
with patch('ApplicationServices.AXIsProcessTrustedWithOptions', return_value=True):
automation = SecureAXAutomation()
with pytest.raises(SecurityError):
automation.get_application_element(pid=1234) # Keychain PID
def test_filters_sensitive_attributes(self):
automation = SecureAXAutomation(permission_tier='read-only')
result = automation.get_attribute(MagicMock(), 'AXPasswordField')
assert result == '[REDACTED]'class TestActionExecution:
def test_blocks_actions_in_readonly_tier(self):
executor = SafeActionExecutor(permission_tier='read-only')
with pytest.raises(PermissionError):
executor.perform_action(MagicMock(), 'AXPress')
undefinedimport pytest
from unittest.mock import patch, MagicMock
class TestTCCValidation:
def test_raises_error_when_permission_missing(self):
with patch('ApplicationServices.AXIsProcessTrustedWithOptions', return_value=False):
with pytest.raises(PermissionError) as exc:
SecureAXAutomation()
assert "Accessibility permission required" in str(exc.value)
class TestSecureElementDiscovery:
def test_blocks_keychain_access(self):
with patch('ApplicationServices.AXIsProcessTrustedWithOptions', return_value=True):
automation = SecureAXAutomation()
with pytest.raises(SecurityError):
automation.get_application_element(pid=1234) # Keychain PID
def test_filters_sensitive_attributes(self):
automation = SecureAXAutomation(permission_tier='read-only')
result = automation.get_attribute(MagicMock(), 'AXPasswordField')
assert result == '[REDACTED]'class TestActionExecution:
def test_blocks_actions_in_readonly_tier(self):
executor = SafeActionExecutor(permission_tier='read-only')
with pytest.raises(PermissionError):
executor.perform_action(MagicMock(), 'AXPress')
undefinedStep 2: Implement Minimum to Pass
步骤2:实现最小功能以通过测试
Implement the classes and methods that make tests pass.
实现使测试通过的类和方法。
Step 3: Refactor Following Patterns
步骤3:遵循模式进行重构
Apply security patterns, caching, and error handling.
应用安全模式、缓存和错误处理。
Step 4: Run Full Verification
步骤4:运行完整验证
bash
undefinedbash
undefinedRun all tests with coverage
Run all tests with coverage
pytest tests/ -v --cov=ax_automation --cov-report=term-missing
pytest tests/ -v --cov=ax_automation --cov-report=term-missing
Run security-specific tests
Run security-specific tests
pytest tests/test_ax_automation.py -k "security or permission" -v
pytest tests/test_ax_automation.py -k "security or permission" -v
Run with timeout to catch hangs
Run with timeout to catch hangs
pytest tests/ --timeout=30
---pytest tests/ --timeout=30
---6. Performance Patterns
6. 性能模式
Pattern 1: Element Caching
模式1:元素缓存
python
undefinedpython
undefinedBAD: Query repeatedly
BAD: Query repeatedly
element = AXUIElementCreateApplication(pid) # Each call
element = AXUIElementCreateApplication(pid) # Each call
GOOD: Cache with TTL
GOOD: Cache with TTL
class ElementCache:
def init(self, ttl=5.0):
self.cache, self.ttl = {}, ttl
def get_or_create(self, pid, role):
key = (pid, role)
if key in self.cache and time() - self.cache[key][1] < self.ttl:
return self.cache[key][0]
element = self._create_element(pid, role)
self.cache[key] = (element, time())
return elementundefinedclass ElementCache:
def init(self, ttl=5.0):
self.cache, self.ttl = {}, ttl
def get_or_create(self, pid, role):
key = (pid, role)
if key in self.cache and time() - self.cache[key][1] < self.ttl:
return self.cache[key][0]
element = self._create_element(pid, role)
self.cache[key] = (element, time())
return elementundefinedPattern 2: Scope Limiting
模式2:范围限制
python
undefinedpython
undefinedBAD: Search entire hierarchy
BAD: Search entire hierarchy
find_all_children(app_element, role='AXButton') # Deep search
find_all_children(app_element, role='AXButton') # Deep search
GOOD: Limit depth
GOOD: Limit depth
def find_button(element, max_depth=3, depth=0, results=None):
if results is None: results = []
if depth > max_depth: return results
if get_attribute(element, 'AXRole') == 'AXButton':
results.append(element)
else:
for child in get_attribute(element, 'AXChildren') or []:
find_button(child, max_depth, depth+1, results)
return results
undefineddef find_button(element, max_depth=3, depth=0, results=None):
if results is None: results = []
if depth > max_depth: return results
if get_attribute(element, 'AXRole') == 'AXButton':
results.append(element)
else:
for child in get_attribute(element, 'AXChildren') or []:
find_button(child, max_depth, depth+1, results)
return results
undefinedPattern 3: Async Queries
模式3:异步查询
python
undefinedpython
undefinedBAD: Sequential blocking
BAD: Sequential blocking
for app in apps: windows.extend(get_windows(app))
for app in apps: windows.extend(get_windows(app))
GOOD: Concurrent with ThreadPoolExecutor
GOOD: Concurrent with ThreadPoolExecutor
async def get_all_windows_async():
with ThreadPoolExecutor(max_workers=4) as executor:
tasks = [loop.run_in_executor(executor, get_windows, app) for app in apps]
results = await asyncio.gather(*tasks)
return [w for wins in results for w in wins]
undefinedasync def get_all_windows_async():
with ThreadPoolExecutor(max_workers=4) as executor:
tasks = [loop.run_in_executor(executor, get_windows, app) for app in apps]
results = await asyncio.gather(*tasks)
return [w for wins in results for w in wins]
undefinedPattern 4: Attribute Batching
模式4:属性批量查询
python
undefinedpython
undefinedBAD: Multiple calls
BAD: Multiple calls
title = AXUIElementCopyAttributeValue(element, 'AXTitle', None)
role = AXUIElementCopyAttributeValue(element, 'AXRole', None)
title = AXUIElementCopyAttributeValue(element, 'AXTitle', None)
role = AXUIElementCopyAttributeValue(element, 'AXRole', None)
GOOD: Batch query
GOOD: Batch query
error, values = AXUIElementCopyMultipleAttributeValues(
element, ['AXTitle', 'AXRole', 'AXPosition', 'AXSize'], None
)
info = dict(zip(attributes, values)) if error == kAXErrorSuccess else {}
undefinederror, values = AXUIElementCopyMultipleAttributeValues(
element, ['AXTitle', 'AXRole', 'AXPosition', 'AXSize'], None
)
info = dict(zip(attributes, values)) if error == kAXErrorSuccess else {}
undefinedPattern 5: Observer Optimization
模式5:观察者优化
python
undefinedpython
undefinedBAD: Observer for every notification without debounce
BAD: Observer for every notification without debounce
GOOD: Selective observers with debouncing
GOOD: Selective observers with debouncing
class OptimizedObserver:
def init(self, app_element, notifications):
self.last_callback, self.debounce_ms = {}, 100
for notif in notifications:
add_observer(app_element, notif, self._debounced_callback)
def _debounced_callback(self, notification, element):
now = time() * 1000
if now - self.last_callback.get(notification, 0) < self.debounce_ms:
return
self.last_callback[notification] = now
self._handle_notification(notification, element)
---class OptimizedObserver:
def init(self, app_element, notifications):
self.last_callback, self.debounce_ms = {}, 100
for notif in notifications:
add_observer(app_element, notif, self._debounced_callback)
def _debounced_callback(self, notification, element):
now = time() * 1000
if now - self.last_callback.get(notification, 0) < self.debounce_ms:
return
self.last_callback[notification] = now
self._handle_notification(notification, element)
---7. Security Standards
7. 安全标准
7.1 Critical Vulnerabilities
7.1 关键漏洞
| CVE/CWE | Severity | Description | Mitigation |
|---|---|---|---|
| CVE-2023-32364 | CRITICAL | TCC bypass via symlinks | Update macOS, validate paths |
| CVE-2023-28206 | HIGH | AX privilege escalation | Process validation, code signing |
| CWE-290 | HIGH | Bundle ID spoofing | Verify code signature |
| CWE-74 | HIGH | Input injection via AX | Block SecurityAgent |
| CVE-2022-42796 | MEDIUM | Hardened runtime bypass | Verify target app runtime |
| CVE/CWE | 严重程度 | 描述 | 缓解措施 |
|---|---|---|---|
| CVE-2023-32364 | 关键 | 通过符号链接绕过TCC | 更新macOS、验证路径 |
| CVE-2023-28206 | 高 | AX权限提升 | 进程验证、代码签名 |
| CWE-290 | 高 | Bundle ID欺骗 | 验证代码签名 |
| CWE-74 | 高 | 通过AX进行输入注入 | 阻止SecurityAgent |
| CVE-2022-42796 | 中 | 绕过强化运行时 | 验证目标应用运行时 |
7.2 OWASP Mapping
7.2 OWASP映射
| OWASP | Risk | Mitigation |
|---|---|---|
| A01 Broken Access | CRITICAL | TCC validation, blocklists |
| A02 Misconfiguration | HIGH | Minimal permissions |
| A05 Injection | HIGH | Input validation |
| A07 Auth Failures | HIGH | Code signature verification |
| OWASP | 风险 | 缓解措施 |
|---|---|---|
| A01 访问控制失效 | 关键 | TCC验证、阻止列表 |
| A02 配置错误 | 高 | 最小权限 |
| A05 注入 | 高 | 输入验证 |
| A07 身份验证失败 | 高 | 代码签名验证 |
7.3 Permission Tier Model
7.3 权限层级模型
| Tier | Attributes | Actions | Timeout |
|---|---|---|---|
| read-only | AXTitle, AXRole, AXChildren | None | 30s |
| standard | All | AXPress, AXIncrement | 60s |
| elevated | All | All (except SecurityAgent) | 120s |
| 层级 | 属性 | 操作 | 超时 |
|---|---|---|---|
| read-only | AXTitle、AXRole、AXChildren | 无 | 30秒 |
| standard | 所有 | AXPress、AXIncrement | 60秒 |
| elevated | 所有 | 所有(除SecurityAgent外) | 120秒 |
8. Common Mistakes
8. 常见错误
Critical Anti-Patterns - Always avoid:
- Automating without TCC permission check
- Trusting bundle ID alone (verify code signature)
- Accessing security dialogs (SecurityAgent, Keychain)
- No timeout on AX operations (can hang indefinitely)
- Caching elements without TTL (elements become stale)
关键反模式 - 务必避免:
- 未检查TCC权限就执行自动化
- 仅信任Bundle ID(需验证代码签名)
- 访问安全对话框(SecurityAgent、钥匙串)
- AX操作未设置超时(可能无限挂起)
- 缓存元素未设置TTL(元素会过期)
9. Pre-Implementation Checklist
9. 实现前检查清单
Phase 1: Before Writing Code
阶段1:编写代码前
- TCC permission requirements documented
- Target applications identified and validated against blocklist
- Permission tier determined (read-only/standard/elevated)
- Test cases written for permission validation
- Test cases written for element discovery
- Test cases written for action execution
- 已记录TCC权限要求
- 已识别目标应用并对照阻止列表验证
- 已确定权限层级(read-only/standard/elevated)
- 已编写权限验证的测试用例
- 已编写元素发现的测试用例
- 已编写操作执行的测试用例
Phase 2: During Implementation
阶段2:实现过程中
- TCC permission validation implemented
- Application blocklist configured
- Code signature verification enabled
- Permission tier system enforced
- Audit logging enabled
- Timeout enforcement on all operations
- Element caching implemented for performance
- Attribute batching used where applicable
- 已实现TCC权限验证
- 已配置应用阻止列表
- 已启用代码签名验证
- 已强制执行权限层级系统
- 已启用审计日志
- 已对所有操作强制执行超时
- 已实现元素缓存以提升性能
- 已在适用场景使用属性批量查询
Phase 3: Before Committing
阶段3:提交前
- All TDD tests pass:
pytest tests/ -v - Security tests pass:
pytest -k "security or permission" - No blocked application access possible
- Timeout handling verified
- Tested on target macOS versions
- Sandbox compatibility verified
- Hardened runtime compatibility checked
- Code coverage meets threshold:
pytest --cov --cov-fail-under=80
- 所有TDD测试通过:
pytest tests/ -v - 安全测试通过:
pytest -k "security or permission" - 无法访问被阻止的应用
- 已验证超时处理
- 已在目标macOS版本上测试
- 已验证沙箱兼容性
- 已检查强化运行时兼容性
- 代码覆盖率达到阈值:
pytest --cov --cov-fail-under=80
10. Summary
10. 总结
Your goal is to create macOS accessibility automation that is:
- Secure: TCC validation, code signature verification, application blocklists
- Reliable: Proper error handling, timeout enforcement
- Compliant: Respects macOS security model and sandbox boundaries
Security Reminders:
- Always validate TCC permissions before automation
- Verify code signatures, not just bundle IDs
- Never automate security dialogs or Keychain
- Log all operations with correlation IDs
- Respect macOS security boundaries
您的目标是创建具备以下特性的macOS辅助功能自动化:
- 安全:TCC验证、代码签名验证、应用阻止列表
- 可靠:合理的错误处理、超时强制执行
- 合规:尊重macOS安全模型和沙箱边界
安全提醒:
- 执行自动化前始终验证TCC权限
- 验证代码签名,而非仅依赖Bundle ID
- 绝不要自动化安全对话框或钥匙串
- 使用关联ID记录所有操作
- 尊重macOS安全边界
References
参考资料
- Advanced Patterns: See
references/advanced-patterns.md - Security Examples: See
references/security-examples.md - Threat Model: See
references/threat-model.md
- 高级模式:参见
references/advanced-patterns.md - 安全示例:参见
references/security-examples.md - 威胁模型:参见
references/threat-model.md