feat(plugin): 实现插件安全验证和审计日志功能

- 添加插件签名验证机制，支持远程证书吊销列表
- 增加插件安装时的安全检查和签名验证
- 实现插件版本存储的HMAC完整性校验
- 添加插件审计日志记录插件安装和验证事件
- 增加JS插件沙箱安全限制配置
- 添加插件商店API的签名URL字段支持
- 实现安全配置的自动刷新机制

pkg/plugin/audit/audit.go

@@ -0,0 +1,154 @@
+package audit
+
+import (
+	"encoding/json"
+	"log"
+	"os"
+	"path/filepath"
+	"sync"
+	"time"
+)
+
+// EventType 审计事件类型
+type EventType string
+
+const (
+	EventPluginInstall   EventType = "plugin_install"
+	EventPluginUninstall EventType = "plugin_uninstall"
+	EventPluginStart     EventType = "plugin_start"
+	EventPluginStop      EventType = "plugin_stop"
+	EventPluginVerify    EventType = "plugin_verify"
+	EventPluginReject    EventType = "plugin_reject"
+	EventConfigChange    EventType = "config_change"
+)
+
+// Event 审计事件
+type Event struct {
+	Timestamp  time.Time         `json:"timestamp"`
+	Type       EventType         `json:"type"`
+	PluginName string            `json:"plugin_name,omitempty"`
+	Version    string            `json:"version,omitempty"`
+	ClientID   string            `json:"client_id,omitempty"`
+	Success    bool              `json:"success"`
+	Message    string            `json:"message,omitempty"`
+	Details    map[string]string `json:"details,omitempty"`
+}
+
+// Logger 审计日志记录器
+type Logger struct {
+	path    string
+	file    *os.File
+	mu      sync.Mutex
+	enabled bool
+}
+
+var (
+	defaultLogger *Logger
+	loggerOnce    sync.Once
+)
+
+// NewLogger 创建审计日志记录器
+func NewLogger(dataDir string) (*Logger, error) {
+	path := filepath.Join(dataDir, "audit.log")
+	dir := filepath.Dir(path)
+	if err := os.MkdirAll(dir, 0755); err != nil {
+		return nil, err
+	}
+
+	file, err := os.OpenFile(path, os.O_CREATE|os.O_APPEND|os.O_WRONLY, 0600)
+	if err != nil {
+		return nil, err
+	}
+
+	return &Logger{path: path, file: file, enabled: true}, nil
+}
+
+// InitDefault 初始化默认日志记录器
+func InitDefault(dataDir string) error {
+	var err error
+	loggerOnce.Do(func() {
+		defaultLogger, err = NewLogger(dataDir)
+	})
+	return err
+}
+
+// Log 记录审计事件
+func (l *Logger) Log(event Event) {
+	if l == nil || !l.enabled {
+		return
+	}
+
+	event.Timestamp = time.Now()
+	l.mu.Lock()
+	defer l.mu.Unlock()
+
+	data, err := json.Marshal(event)
+	if err != nil {
+		log.Printf("[Audit] Marshal error: %v", err)
+		return
+	}
+
+	if _, err := l.file.Write(append(data, '\n')); err != nil {
+		log.Printf("[Audit] Write error: %v", err)
+	}
+}
+
+// Close 关闭日志文件
+func (l *Logger) Close() error {
+	if l == nil || l.file == nil {
+		return nil
+	}
+	return l.file.Close()
+}
+
+// LogEvent 使用默认记录器记录事件
+func LogEvent(event Event) {
+	if defaultLogger != nil {
+		defaultLogger.Log(event)
+	}
+}
+
+// LogPluginInstall 记录插件安装事件
+func LogPluginInstall(pluginName, version, clientID string, success bool, msg string) {
+	LogEvent(Event{
+		Type:       EventPluginInstall,
+		PluginName: pluginName,
+		Version:    version,
+		ClientID:   clientID,
+		Success:    success,
+		Message:    msg,
+	})
+}
+
+// LogPluginVerify 记录插件验证事件
+func LogPluginVerify(pluginName, version string, success bool, msg string) {
+	LogEvent(Event{
+		Type:       EventPluginVerify,
+		PluginName: pluginName,
+		Version:    version,
+		Success:    success,
+		Message:    msg,
+	})
+}
+
+// LogPluginReject 记录插件拒绝事件
+func LogPluginReject(pluginName, version, reason string) {
+	LogEvent(Event{
+		Type:       EventPluginReject,
+		PluginName: pluginName,
+		Version:    version,
+		Success:    false,
+		Message:    reason,
+	})
+}
+
+// LogWithDetails 记录带详情的事件
+func LogWithDetails(eventType EventType, pluginName string, success bool, msg string, details map[string]string) {
+	LogEvent(Event{
+		Type:       eventType,
+		PluginName: pluginName,
+		Success:    success,
+		Message:    msg,
+		Details:    details,
+	})
+}

pkg/plugin/script/js.go

@@ -48,6 +48,11 @@ func (p *JSPlugin) SetSandbox(sandbox *Sandbox) {
 
 // init 初始化 JS 运行时
 func (p *JSPlugin) init() error {
+	// 设置栈深度限制（防止递归攻击）
+	if p.sandbox.MaxStackDepth > 0 {
+		p.vm.SetMaxCallStackSize(p.sandbox.MaxStackDepth)
+	}
+
 	// 注入基础 API
 	p.vm.Set("log", p.jsLog)
 	p.vm.Set("config", p.jsGetConfig)

pkg/plugin/script/sandbox.go

@@ -21,6 +21,10 @@ type Sandbox struct {
 	MaxReadSize int64
 	// 最大文件写入大小 (bytes)
 	MaxWriteSize int64
+	// 最大内存使用量 (bytes)，0 表示不限制
+	MaxMemory int64
+	// 最大调用栈深度
+	MaxStackDepth int
 }
 
 // DefaultSandbox 返回默认沙箱配置（最小权限）
@@ -30,8 +34,10 @@ func DefaultSandbox() *Sandbox {
 		WritablePaths: []string{},
 		DeniedPaths:   defaultDeniedPaths(),
 		AllowNetwork:  false,
-		MaxReadSize:   10 * 1024 * 1024,  // 10MB
-		MaxWriteSize:  1 * 1024 * 1024,   // 1MB
+		MaxReadSize:   10 * 1024 * 1024, // 10MB
+		MaxWriteSize:  1 * 1024 * 1024,  // 1MB
+		MaxMemory:     64 * 1024 * 1024, // 64MB
+		MaxStackDepth: 1000,             // 最大调用栈深度
 	}
 }
 

pkg/plugin/sign/official.go

@@ -2,17 +2,21 @@ package sign
 
 import (
 	"crypto/ed25519"
+	"encoding/json"
 	"fmt"
+	"io"
+	"log"
+	"net/http"
 	"sync"
 	"time"
 )
 
 // KeyEntry 密钥条目
 type KeyEntry struct {
-	ID        string    // 密钥 ID
-	PublicKey string    // Base64 编码的公钥
-	ValidFrom time.Time // 生效时间
-	RevokedAt time.Time // 吊销时间（零值表示未吊销）
+	ID        string    `json:"id"`
+	PublicKey string    `json:"public_key"`
+	ValidFrom time.Time `json:"valid_from"`
+	RevokedAt time.Time `json:"revoked_at,omitempty"`
 }
 
 // 官方公钥列表（支持密钥轮换）
@@ -28,8 +32,30 @@ var officialKeys = []KeyEntry{
 var (
 	keyCache     map[string]ed25519.PublicKey
 	keyCacheOnce sync.Once
+	keyMu        sync.RWMutex
+	remoteKeys   []KeyEntry
 )
 
+// KeyListConfig 远程公钥列表配置
+type KeyListConfig struct {
+	RemoteURL      string
+	FetchInterval  time.Duration
+	RequestTimeout time.Duration
+}
+
+var keyListConfig = KeyListConfig{
+	RemoteURL:      "",
+	FetchInterval:  24 * time.Hour,
+	RequestTimeout: 10 * time.Second,
+}
+
+// SetKeyListConfig 设置远程公钥列表配置
+func SetKeyListConfig(cfg KeyListConfig) {
+	keyMu.Lock()
+	defer keyMu.Unlock()
+	keyListConfig = cfg
+}
+
 // initKeyCache 初始化密钥缓存
 func initKeyCache() {
 	keyCache = make(map[string]ed25519.PublicKey)
@@ -49,7 +75,10 @@ func GetOfficialPublicKey() (ed25519.PublicKey, error) {
 func GetPublicKeyByID(keyID string) (ed25519.PublicKey, error) {
 	keyCacheOnce.Do(initKeyCache)
 
+	keyMu.RLock()
 	pub, ok := keyCache[keyID]
+	keyMu.RUnlock()
+
 	if !ok {
 		return nil, fmt.Errorf("unknown key ID: %s", keyID)
 	}
@@ -58,11 +87,20 @@ func GetPublicKeyByID(keyID string) (ed25519.PublicKey, error) {
 
 // IsKeyRevoked 检查密钥是否已吊销
 func IsKeyRevoked(keyID string) bool {
+	// 先检查内置密钥
 	for _, entry := range officialKeys {
 		if entry.ID == keyID {
 			return !entry.RevokedAt.IsZero()
 		}
 	}
+	// 再检查远程密钥
+	keyMu.RLock()
+	defer keyMu.RUnlock()
+	for _, entry := range remoteKeys {
+		if entry.ID == keyID {
+			return !entry.RevokedAt.IsZero()
+		}
+	}
 	return true // 未知密钥视为已吊销
 }
 
@@ -73,5 +111,108 @@ func GetKeyEntry(keyID string) *KeyEntry {
 			return &officialKeys[i]
 		}
 	}
+	keyMu.RLock()
+	defer keyMu.RUnlock()
+	for i := range remoteKeys {
+		if remoteKeys[i].ID == keyID {
+			return &remoteKeys[i]
+		}
+	}
+	return nil
+}
+
+// KeyList 远程公钥列表结构
+type KeyList struct {
+	Version   int        `json:"version"`
+	UpdatedAt int64      `json:"updated_at"`
+	Keys      []KeyEntry `json:"keys"`
+	Signature string     `json:"signature"`
+}
+
+// FetchRemoteKeyList 从远程拉取公钥列表
+func FetchRemoteKeyList() error {
+	keyMu.RLock()
+	cfg := keyListConfig
+	keyMu.RUnlock()
+
+	if cfg.RemoteURL == "" {
+		return nil
+	}
+
+	client := &http.Client{Timeout: cfg.RequestTimeout}
+	resp, err := client.Get(cfg.RemoteURL)
+	if err != nil {
+		return fmt.Errorf("fetch key list: %w", err)
+	}
+	defer resp.Body.Close()
+
+	if resp.StatusCode != http.StatusOK {
+		return fmt.Errorf("fetch key list: status %d", resp.StatusCode)
+	}
+
+	body, err := io.ReadAll(resp.Body)
+	if err != nil {
+		return fmt.Errorf("read key list: %w", err)
+	}
+
+	var list KeyList
+	if err := json.Unmarshal(body, &list); err != nil {
+		return fmt.Errorf("parse key list: %w", err)
+	}
+
+	// 验证签名（使用内置公钥验证）
+	if err := verifyKeyListSignature(&list); err != nil {
+		return fmt.Errorf("verify key list: %w", err)
+	}
+
+	return updateKeyCache(&list)
+}
+
+// verifyKeyListSignature 验证公钥列表签名
+func verifyKeyListSignature(list *KeyList) error {
+	if list.Signature == "" {
+		return fmt.Errorf("missing signature")
+	}
+
+	// 使用内置公钥验证（必须用内置密钥签名）
+	pubKey, err := GetOfficialPublicKey()
+	if err != nil {
+		return err
+	}
+
+	signData := struct {
+		Version   int        `json:"version"`
+		UpdatedAt int64      `json:"updated_at"`
+		Keys      []KeyEntry `json:"keys"`
+	}{
+		Version:   list.Version,
+		UpdatedAt: list.UpdatedAt,
+		Keys:      list.Keys,
+	}
+
+	data, err := json.Marshal(signData)
+	if err != nil {
+		return err
+	}
+
+	return VerifyBase64(pubKey, data, list.Signature)
+}
+
+// updateKeyCache 更新公钥缓存
+func updateKeyCache(list *KeyList) error {
+	keyMu.Lock()
+	defer keyMu.Unlock()
+
+	// 保存远程密钥列表
+	remoteKeys = list.Keys
+
+	// 更新缓存
+	for _, entry := range list.Keys {
+		if pub, err := DecodePublicKey(entry.PublicKey); err == nil {
+			keyCache[entry.ID] = pub
+		}
+	}
+
+	log.Printf("[KeyList] Updated with %d keys", len(list.Keys))
 	return nil
 }

pkg/plugin/sign/revocation.go

@@ -1,7 +1,13 @@
 package sign
 
 import (
+	"encoding/json"
+	"fmt"
+	"io"
+	"log"
+	"net/http"
 	"sync"
+	"time"
 )
 
 // RevocationEntry 撤销条目
@@ -20,7 +26,7 @@ type RevocationList struct {
 	Signature string            `json:"signature"`  // 列表签名
 }
 
-// 内置撤销列表（编译时确定）
+// 内置撤销列表（编译时确定，作为 fallback）
 var builtinRevocations = []RevocationEntry{
 	// 示例：{PluginName: "malicious-plugin", Reason: "security vulnerability"}
 }
@@ -28,8 +34,42 @@ var builtinRevocations = []RevocationEntry{
 var (
 	revocationCache     map[string][]RevocationEntry // pluginName -> entries
 	revocationCacheOnce sync.Once
+	revocationMu        sync.RWMutex
+	currentListVersion  int
+	lastFetchTime       time.Time
 )
 
+// RevocationConfig 远程撤销列表配置
+type RevocationConfig struct {
+	RemoteURL       string        // 远程撤销列表 URL
+	FetchInterval   time.Duration // 拉取间隔
+	RequestTimeout  time.Duration // 请求超时
+	VerifySignature bool          // 是否验证签名
+}
+
+var defaultRevocationConfig = RevocationConfig{
+	RemoteURL:       "", // 默认为空，不启用远程拉取
+	FetchInterval:   1 * time.Hour,
+	RequestTimeout:  10 * time.Second,
+	VerifySignature: true,
+}
+
+var revocationConfig = defaultRevocationConfig
+
+// SetRevocationConfig 设置远程撤销列表配置
+func SetRevocationConfig(cfg RevocationConfig) {
+	revocationMu.Lock()
+	defer revocationMu.Unlock()
+	revocationConfig = cfg
+}
+
+// GetRevocationConfig 获取当前配置
+func GetRevocationConfig() RevocationConfig {
+	revocationMu.RLock()
+	defer revocationMu.RUnlock()
+	return revocationConfig
+}
+
 // initRevocationCache 初始化撤销缓存
 func initRevocationCache() {
 	revocationCache = make(map[string][]RevocationEntry)
@@ -43,6 +83,9 @@ func initRevocationCache() {
 func IsPluginRevoked(name, version string) (bool, string) {
 	revocationCacheOnce.Do(initRevocationCache)
 
+	revocationMu.RLock()
+	defer revocationMu.RUnlock()
+
 	entries, ok := revocationCache[name]
 	if !ok {
 		return false, ""
@@ -56,3 +99,144 @@ func IsPluginRevoked(name, version string) (bool, string) {
 	}
 	return false, ""
 }
+
+// FetchRemoteRevocationList 从远程拉取撤销列表
+func FetchRemoteRevocationList() error {
+	cfg := GetRevocationConfig()
+	if cfg.RemoteURL == "" {
+		return nil // 未配置远程 URL，跳过
+	}
+
+	// 检查是否需要刷新
+	revocationMu.RLock()
+	if time.Since(lastFetchTime) < cfg.FetchInterval {
+		revocationMu.RUnlock()
+		return nil
+	}
+	revocationMu.RUnlock()
+
+	// 发起 HTTP 请求
+	client := &http.Client{Timeout: cfg.RequestTimeout}
+	resp, err := client.Get(cfg.RemoteURL)
+	if err != nil {
+		return fmt.Errorf("fetch revocation list: %w", err)
+	}
+	defer resp.Body.Close()
+
+	if resp.StatusCode != http.StatusOK {
+		return fmt.Errorf("fetch revocation list: status %d", resp.StatusCode)
+	}
+
+	body, err := io.ReadAll(resp.Body)
+	if err != nil {
+		return fmt.Errorf("read revocation list: %w", err)
+	}
+
+	var list RevocationList
+	if err := json.Unmarshal(body, &list); err != nil {
+		return fmt.Errorf("parse revocation list: %w", err)
+	}
+
+	// 验证签名
+	if cfg.VerifySignature {
+		if err := verifyRevocationListSignature(&list); err != nil {
+			return fmt.Errorf("verify revocation list: %w", err)
+		}
+	}
+
+	// 更新缓存
+	return updateRevocationCache(&list)
+}
+
+// verifyRevocationListSignature 验证撤销列表签名
+func verifyRevocationListSignature(list *RevocationList) error {
+	if list.Signature == "" {
+		return fmt.Errorf("missing signature")
+	}
+
+	// 获取官方公钥
+	pubKey, err := GetOfficialPublicKey()
+	if err != nil {
+		return fmt.Errorf("get public key: %w", err)
+	}
+
+	// 构造待签名数据（不含签名字段）
+	signData := struct {
+		Version   int               `json:"version"`
+		UpdatedAt int64             `json:"updated_at"`
+		Entries   []RevocationEntry `json:"entries"`
+	}{
+		Version:   list.Version,
+		UpdatedAt: list.UpdatedAt,
+		Entries:   list.Entries,
+	}
+
+	data, err := json.Marshal(signData)
+	if err != nil {
+		return fmt.Errorf("marshal sign data: %w", err)
+	}
+
+	return VerifyBase64(pubKey, data, list.Signature)
+}
+
+// updateRevocationCache 更新撤销缓存
+func updateRevocationCache(list *RevocationList) error {
+	revocationMu.Lock()
+	defer revocationMu.Unlock()
+
+	// 检查版本号，防止回滚攻击
+	if list.Version < currentListVersion {
+		return fmt.Errorf("revocation list version rollback: %d < %d", list.Version, currentListVersion)
+	}
+
+	// 重建缓存：先加载内置列表，再合并远程列表
+	newCache := make(map[string][]RevocationEntry)
+	for _, entry := range builtinRevocations {
+		newCache[entry.PluginName] = append(newCache[entry.PluginName], entry)
+	}
+	for _, entry := range list.Entries {
+		newCache[entry.PluginName] = append(newCache[entry.PluginName], entry)
+	}
+
+	revocationCache = newCache
+	currentListVersion = list.Version
+	lastFetchTime = time.Now()
+
+	log.Printf("[Revocation] Updated to version %d with %d entries", list.Version, len(list.Entries))
+	return nil
+}
+
+// StartRevocationRefresher 启动后台刷新协程
+func StartRevocationRefresher(stopCh <-chan struct{}) {
+	cfg := GetRevocationConfig()
+	if cfg.RemoteURL == "" {
+		return
+	}
+
+	// 立即执行一次
+	if err := FetchRemoteRevocationList(); err != nil {
+		log.Printf("[Revocation] Initial fetch failed: %v", err)
+	}
+
+	ticker := time.NewTicker(cfg.FetchInterval)
+	defer ticker.Stop()
+
+	for {
+		select {
+		case <-ticker.C:
+			if err := FetchRemoteRevocationList(); err != nil {
+				log.Printf("[Revocation] Refresh failed: %v", err)
+			}
+		case <-stopCh:
+			log.Printf("[Revocation] Refresher stopped")
+			return
+		}
+	}
+}
+
+// GetRevocationListVersion 获取当前撤销列表版本
+func GetRevocationListVersion() int {
+	revocationMu.RLock()
+	defer revocationMu.RUnlock()
+	return currentListVersion
+}