macos-accessibility

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1. 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

  1. Accessibility APIs: AXUIElementRef, AXObserver, attribute queries
  2. TCC Permissions: Accessibility permission requests, validation
  3. Process Management: NSRunningApplication, process validation
  4. Security Controls: Sandbox awareness, permission tiers

  1. 辅助功能API:AXUIElementRef、AXObserver、属性查询
  2. TCC权限:辅助功能权限请求、验证
  3. 进程管理:NSRunningApplication、进程验证
  4. 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:
  1. Check for Accessibility permission in TCC database
  2. Validate process has required entitlements
  3. Request minimal necessary permissions
  4. Handle permission denial gracefully
所有自动化必须:
  1. 检查TCC数据库中的辅助功能权限
  2. 验证进程是否拥有所需的权限
  3. 请求最小必要权限
  4. 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:
  1. Verify target application identity
  2. Check against blocked application list
  3. Validate TCC permissions
  4. Log operation with correlation ID
  5. Enforce timeout limits

每一项自动化操作必须:
  1. 验证目标应用身份
  2. 检查是否在阻止应用列表中
  3. 验证TCC权限
  4. 使用关联ID记录操作
  5. 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 queries

3.2 Essential Libraries

3.2 必备库

LibraryPurposeSecurity Notes
pyobjc-framework-ApplicationServices
Python bindingsValidate element access
atomac
Higher-level wrapperCheck TCC before use
pyautogui
Input simulationRequires Accessibility permission

用途安全注意事项
pyobjc-framework-ApplicationServices
Python绑定验证元素访问权限
atomac
高层封装使用前检查TCC权限
pyautogui
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 == kAXErrorSuccess
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 == kAXErrorSuccess

Pattern 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 == 0

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 == 0

5. 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
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python
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tests/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')
undefined
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')
undefined

Step 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
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bash
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Run 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
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python
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BAD: 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 element
undefined
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 element
undefined

Pattern 2: Scope Limiting

模式2:范围限制

python
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python
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BAD: 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
undefined
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
undefined

Pattern 3: Async Queries

模式3:异步查询

python
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python
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BAD: 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]
undefined
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]
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Pattern 4: Attribute Batching

模式4:属性批量查询

python
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python
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BAD: 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 {}
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error, values = AXUIElementCopyMultipleAttributeValues( element, ['AXTitle', 'AXRole', 'AXPosition', 'AXSize'], None ) info = dict(zip(attributes, values)) if error == kAXErrorSuccess else {}
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Pattern 5: Observer Optimization

模式5:观察者优化

python
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python
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BAD: 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/CWESeverityDescriptionMitigation
CVE-2023-32364CRITICALTCC bypass via symlinksUpdate macOS, validate paths
CVE-2023-28206HIGHAX privilege escalationProcess validation, code signing
CWE-290HIGHBundle ID spoofingVerify code signature
CWE-74HIGHInput injection via AXBlock SecurityAgent
CVE-2022-42796MEDIUMHardened runtime bypassVerify 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-2023-28206AX权限提升进程验证、代码签名
CWE-290Bundle ID欺骗验证代码签名
CWE-74通过AX进行输入注入阻止SecurityAgent
CVE-2022-42796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

OWASPRiskMitigation
A01 Broken AccessCRITICALTCC validation, blocklists
A02 MisconfigurationHIGHMinimal permissions
A05 InjectionHIGHInput validation
A07 Auth FailuresHIGHCode 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 配置错误最小权限
A05 注入输入验证
A07 身份验证失败代码签名验证

7.3 Permission Tier Model

7.3 权限层级模型

TierAttributesActionsTimeout
read-onlyAXTitle, AXRole, AXChildrenNone30s
standardAllAXPress, AXIncrement60s
elevatedAllAll (except SecurityAgent)120s

层级属性操作超时
read-onlyAXTitle、AXRole、AXChildren30秒
standard所有AXPress、AXIncrement60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:
  1. Always validate TCC permissions before automation
  2. Verify code signatures, not just bundle IDs
  3. Never automate security dialogs or Keychain
  4. Log all operations with correlation IDs
  5. 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
  1. 执行自动化前始终验证TCC权限
  2. 验证代码签名,而非仅依赖Bundle ID
  3. 绝不要自动化安全对话框或钥匙串
  4. 使用关联ID记录所有操作
  5. 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