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- package waf
- import (
- "context"
- "encoding/json"
- "fmt"
- "maps"
- "net"
- "strconv"
- v1 "github.com/go-nunu/nunu-layout-advanced/api/v1"
- "github.com/go-nunu/nunu-layout-advanced/internal/model"
- "github.com/go-nunu/nunu-layout-advanced/internal/repository/api/waf"
- "github.com/go-nunu/nunu-layout-advanced/internal/service"
- "github.com/go-nunu/nunu-layout-advanced/internal/service/api/flexCdn"
- )
- // AidedTcpService TCP转发辅助服务接口
- type AidedTcpService interface {
- // 验证相关
- ValidateAddRequest(ctx context.Context, req *v1.TcpForwardingRequest, require RequireResponse) error
- ValidateEditRequest(ctx context.Context, req *v1.TcpForwardingRequest, require RequireResponse, oldData *model.Tcpforwarding) error
- ValidateDeletePermission(oldData *model.Tcpforwarding, hostId int) error
- // CDN操作相关
- CreateCdnWebsite(ctx context.Context, formData v1.WebsiteSend) (int64, error)
- UpdateCdnConfiguration(ctx context.Context, req *v1.TcpForwardingRequest, oldData *model.Tcpforwarding, require RequireResponse, formData v1.WebsiteSend) error
- DeleteCdnServer(ctx context.Context, cdnWebId int) error
- // 源站操作相关
- AddOriginsToWebsite(ctx context.Context, req *v1.TcpForwardingRequest, tcpId int64) (map[string]int64, error)
- UpdateOriginServers(ctx context.Context, req *v1.TcpForwardingRequest, oldData *model.Tcpforwarding, ipData *model.TcpForwardingRule) error
- // 代理协议配置
- ConfigureProxyProtocol(ctx context.Context, req *v1.TcpForwardingRequest, tcpId int64) error
- // 异步任务处理
- ProcessAsyncTasks(req *v1.TcpForwardingRequest)
- ProcessIpWhitelistChanges(ctx context.Context, req *v1.TcpForwardingRequest, ipData *model.TcpForwardingRule) error
- ProcessDeleteIpWhitelist(ctx context.Context, id int) error
- // 数据准备和配置
- PrepareWafData(ctx context.Context, req *v1.TcpForwardingRequest) (RequireResponse, v1.WebsiteSend, error)
- BuildTcpListenConfig(gatewayIps []string, portStr string) ([]byte, error)
- // 模型构建
- BuildTcpForwardingModel(req *v1.TcpForwardingDataRequest, ruleId int, require RequireResponse) *model.Tcpforwarding
- BuildTcpRuleModel(reqData *v1.TcpForwardingDataRequest, require RequireResponse, localDbId int, cdnOriginIds map[string]int64) *model.TcpForwardingRule
- // 数据库操作
- SaveToDatabase(ctx context.Context, req *v1.TcpForwardingRequest, require RequireResponse, tcpId int64, cdnOriginIds map[string]int64) (int, error)
- UpdateDatabaseRecords(ctx context.Context, req *v1.TcpForwardingRequest, oldData *model.Tcpforwarding, require RequireResponse, ipData *model.TcpForwardingRule) error
- CleanupDatabaseRecords(ctx context.Context, id int) error
- // 工具函数
- ExtractIpsFromBackends(backends []string) []string
- }
- type aidedTcpService struct {
- *service.Service
- wafformatter WafFormatterService
- cdn flexCdn.CdnService
- proxy flexCdn.ProxyService
- globalRep waf.GlobalLimitRepository
- tcpRepository waf.TcpforwardingRepository
- }
- func NewAidedTcpService(
- service *service.Service,
- wafformatter WafFormatterService,
- cdn flexCdn.CdnService,
- proxy flexCdn.ProxyService,
- globalRep waf.GlobalLimitRepository,
- tcpRepository waf.TcpforwardingRepository,
- ) AidedTcpService {
- return &aidedTcpService{
- Service: service,
- wafformatter: wafformatter,
- cdn: cdn,
- proxy: proxy,
- globalRep: globalRep,
- tcpRepository: tcpRepository,
- }
- }
- // ValidateAddRequest 验证添加 TCP 转发请求的合法性
- // 该函数验证以下内容:
- // 1. 验证 WAF 端口数量限制(防止超出配额)
- // 2. 验证端口号是否已被占用(确保端口唯一性)
- func (s *aidedTcpService) ValidateAddRequest(ctx context.Context, req *v1.TcpForwardingRequest, require RequireResponse) error {
- // 验证端口数量限制
- if err := s.wafformatter.validateWafPortCount(ctx, require.HostId); err != nil {
- return fmt.Errorf("端口数量验证失败: %w", err)
- }
- // 验证端口占用情况
- if err := s.wafformatter.VerifyPort(ctx, "tcp", int64(req.TcpForwardingData.Id), req.TcpForwardingData.Port, int64(require.HostId), ""); err != nil {
- return fmt.Errorf("端口 %d 已被占用或不合法: %w", req.TcpForwardingData.Port, err)
- }
- return nil
- }
- // ValidateEditRequest 验证编辑 TCP 转发请求的合法性
- // 该函数仅在端口发生变更时才验证端口冲突,提高性能并避免不必要的检查
- func (s *aidedTcpService) ValidateEditRequest(ctx context.Context, req *v1.TcpForwardingRequest, require RequireResponse, oldData *model.Tcpforwarding) error {
- // 只有端口发生变更时才需要验证端口冲突
- if oldData.Port != req.TcpForwardingData.Port {
- if err := s.wafformatter.VerifyPort(ctx, "tcp", int64(req.TcpForwardingData.Id), req.TcpForwardingData.Port, int64(require.HostId), ""); err != nil {
- return fmt.Errorf("新端口 %d 已被占用或不合法: %w", req.TcpForwardingData.Port, err)
- }
- }
- return nil
- }
- // ValidateDeletePermission 验证删除 TCP 转发配置的权限
- // 该函数确保用户只能删除属于自己主机的配置,防止越权操作
- func (s *aidedTcpService) ValidateDeletePermission(oldData *model.Tcpforwarding, hostId int) error {
- if oldData == nil {
- return fmt.Errorf("TCP转发配置数据不存在")
- }
- if oldData.HostId != hostId {
- return fmt.Errorf("用户权限不足,无法删除不属于自己主机的配置(主机ID: %d)", hostId)
- }
- return nil
- }
- // CreateCdnWebsite 在 CDN 系统中创建 TCP 代理网站
- // 该函数调用 CDN 服务接口创建一个新的 TCP 代理网站,返回网站ID用于后续配置
- func (s *aidedTcpService) CreateCdnWebsite(ctx context.Context, formData v1.WebsiteSend) (int64, error) {
- tcpId, err := s.cdn.CreateWebsite(ctx, formData)
- if err != nil {
- return 0, fmt.Errorf("在CDN系统中创建 TCP 代理网站失败: %w", err)
- }
- if tcpId <= 0 {
- return 0, fmt.Errorf("CDN系统返回了无效的网站ID: %d", tcpId)
- }
- return tcpId, nil
- }
- // UpdateCdnConfiguration 更新 CDN 系统中的 TCP 代理配置
- // 该函数根据变更内容智能更新:
- // 1. 端口变更 - 更新网站监听配置
- // 2. 名称变更 - 更新网站基本信息
- // 3. 代理协议变更 - 开启/关闭 Proxy Protocol
- func (s *aidedTcpService) UpdateCdnConfiguration(ctx context.Context, req *v1.TcpForwardingRequest, oldData *model.Tcpforwarding, require RequireResponse, formData v1.WebsiteSend) error {
- // 更新网站端口
- if oldData.Port != req.TcpForwardingData.Port {
- if err := s.cdn.EditServerType(ctx, v1.EditWebsite{
- Id: int64(oldData.CdnWebId),
- TypeJSON: formData.TcpJSON,
- }, "tcp"); err != nil {
- return fmt.Errorf("更新网站端口失败: %w", err)
- }
- }
- // 更新网站名称
- if oldData.Comment != req.TcpForwardingData.Comment {
- nodeId, err := s.globalRep.GetNodeId(ctx, oldData.CdnWebId)
- if err != nil {
- return fmt.Errorf("获取节点ID失败: %w", err)
- }
- if err := s.cdn.EditServerBasic(ctx, int64(oldData.CdnWebId), require.Tag, nodeId); err != nil {
- return fmt.Errorf("更新网站名称失败: %w", err)
- }
- }
- // 更新代理协议
- if oldData.Proxy != req.TcpForwardingData.Proxy {
- if err := s.proxy.EditProxy(ctx, int64(oldData.CdnWebId), v1.ProxyProtocolJSON{
- IsOn: req.TcpForwardingData.Proxy,
- Version: 1,
- }); err != nil {
- return fmt.Errorf("更新代理协议失败: %w", err)
- }
- }
- return nil
- }
- // DeleteCdnServer 从 CDN 系统中删除 TCP 代理网站
- // 该函数删除 CDN 中的网站配置,释放端口资源和相关配置
- func (s *aidedTcpService) DeleteCdnServer(ctx context.Context, cdnWebId int) error {
- if err := s.cdn.DelServer(ctx, int64(cdnWebId)); err != nil {
- return fmt.Errorf("删除CDN服务器失败: %w", err)
- }
- return nil
- }
- // AddOriginsToWebsite 为 TCP 代理网站添加后端源站
- // 该函数执行以下操作:
- // 1. 批量创建后端服务器的源站记录
- // 2. 将源站关联到 TCP 代理网站
- // 3. 返回后端地址与源站ID的映射关系
- func (s *aidedTcpService) AddOriginsToWebsite(ctx context.Context, req *v1.TcpForwardingRequest, tcpId int64) (map[string]int64, error) {
- cdnOriginIds := make(map[string]int64)
- // 批量创建源站
- for _, backend := range req.TcpForwardingData.BackendList {
- id, err := s.wafformatter.AddOrigin(ctx, v1.WebJson{
- ApiType: "tcp",
- BackendList: backend,
- Comment: req.TcpForwardingData.Comment,
- })
- if err != nil {
- return nil, fmt.Errorf("添加源站失败 %s: %w", backend, err)
- }
- cdnOriginIds[backend] = id
- }
- // 批量关联源站到网站
- for _, originId := range cdnOriginIds {
- if err := s.cdn.AddServerOrigin(ctx, tcpId, originId); err != nil {
- return nil, fmt.Errorf("关联源站到网站失败: %w", err)
- }
- }
- return cdnOriginIds, nil
- }
- // UpdateOriginServers 更新 TCP 代理的后端源站配置
- // 该函数智能对比新旧后端列表,只处理变更的部分:
- // 1. 添加新增的后端服务器
- // 2. 删除不再需要的后端服务器
- // 3. 更新源站ID映射关系
- func (s *aidedTcpService) UpdateOriginServers(ctx context.Context, req *v1.TcpForwardingRequest, oldData *model.Tcpforwarding, ipData *model.TcpForwardingRule) error {
- addOrigins, delOrigins := s.wafformatter.findIpDifferences(ipData.BackendList, req.TcpForwardingData.BackendList)
- // 添加新源站
- addedIds := make(map[string]int64)
- for _, origin := range addOrigins {
- id, err := s.wafformatter.AddOrigin(ctx, v1.WebJson{
- ApiType: "tcp",
- BackendList: origin,
- Comment: req.TcpForwardingData.Comment,
- })
- if err != nil {
- return fmt.Errorf("添加源站失败 %s: %w", origin, err)
- }
- addedIds[origin] = id
- }
- // 关联新源站到网站
- for _, originId := range addedIds {
- if err := s.cdn.AddServerOrigin(ctx, int64(oldData.CdnWebId), originId); err != nil {
- return fmt.Errorf("关联源站到网站失败: %w", err)
- }
- }
- // 更新源站ID映射
- maps.Copy(ipData.CdnOriginIds, addedIds)
- // 删除不需要的源站
- for backend, originId := range ipData.CdnOriginIds {
- for _, delOrigin := range delOrigins {
- if backend == delOrigin {
- if err := s.cdn.DelServerOrigin(ctx, int64(oldData.CdnWebId), originId); err != nil {
- return fmt.Errorf("删除源站失败: %w", err)
- }
- delete(ipData.CdnOriginIds, backend)
- break
- }
- }
- }
- return nil
- }
- // ConfigureProxyProtocol 配置 TCP 代理的 Proxy Protocol 协议
- // 该函数根据请求参数决定是否开启 Proxy Protocol,用于传递客户端真实IP
- func (s *aidedTcpService) ConfigureProxyProtocol(ctx context.Context, req *v1.TcpForwardingRequest, tcpId int64) error {
- // 如果不需要开启 Proxy Protocol,直接返回
- if !req.TcpForwardingData.Proxy {
- return nil
- }
- // 配置 Proxy Protocol v1
- if err := s.proxy.EditProxy(ctx, tcpId, v1.ProxyProtocolJSON{
- IsOn: true,
- Version: 1,
- }); err != nil {
- return fmt.Errorf("开启 Proxy Protocol 失败: %w", err)
- }
- return nil
- }
- // ProcessAsyncTasks 处理 TCP 转发相关的异步任务
- // 该函数主要处理新增后端服务器时的IP白名单添加任务,确保后端服务器能正常访问
- func (s *aidedTcpService) ProcessAsyncTasks(req *v1.TcpForwardingRequest) {
- // 检查是否有后端服务器需要处理
- if req == nil || len(req.TcpForwardingData.BackendList) == 0 {
- return
- }
- // 提取后端 IP 地址
- ips := s.ExtractIpsFromBackends(req.TcpForwardingData.BackendList)
- if len(ips) > 0 {
- // 异步添加到白名单
- go s.wafformatter.PublishIpWhitelistTask(ips, "add", "", "white")
- }
- }
- // ProcessIpWhitelistChanges 处理 TCP 转发编辑时的IP白名单变更
- // 该函数对比新旧后端列表,智能处理IP白名单:
- // 1. 将新增的后端 IP 加入白名单
- // 2. 将不再使用的后端 IP 从白名单移除
- func (s *aidedTcpService) ProcessIpWhitelistChanges(ctx context.Context, req *v1.TcpForwardingRequest, ipData *model.TcpForwardingRule) error {
- addedIps, removedIps, err := s.wafformatter.WashEditWafIp(ctx, req.TcpForwardingData.BackendList, ipData.BackendList)
- if err != nil {
- return fmt.Errorf("处理IP变更失败: %w", err)
- }
- // 处理新增IP
- if len(addedIps) > 0 {
- go s.wafformatter.PublishIpWhitelistTask(addedIps, "add", "", "white")
- }
- // 处理移除IP
- if len(removedIps) > 0 {
- ipsToDelist, err := s.wafformatter.WashDelIps(ctx, removedIps)
- if err != nil {
- return fmt.Errorf("处理移除IP失败: %w", err)
- }
- if len(ipsToDelist) > 0 {
- go s.wafformatter.PublishIpWhitelistTask(ipsToDelist, "del", "0", "white")
- }
- }
- return nil
- }
- // ProcessDeleteIpWhitelist 处理 TCP 转发删除时的IP白名单清理
- // 该函数在删除 TCP 转发配置时,智能清理不再需要的后端 IP 白名单条目
- func (s *aidedTcpService) ProcessDeleteIpWhitelist(ctx context.Context, id int) error {
- ipData, err := s.tcpRepository.GetTcpForwardingIpsByID(ctx, id)
- if err != nil {
- return fmt.Errorf("获取IP数据失败: %w", err)
- }
- if ipData == nil || len(ipData.BackendList) == 0 {
- return nil
- }
- ips, err := s.wafformatter.WashDeleteWafIp(ctx, ipData.BackendList)
- if err != nil {
- return fmt.Errorf("处理删除IP失败: %w", err)
- }
- if len(ips) > 0 {
- ipsToDelist, err := s.wafformatter.WashDelIps(ctx, ips)
- if err != nil {
- return fmt.Errorf("清理IP列表失败: %w", err)
- }
- if len(ipsToDelist) > 0 {
- go s.wafformatter.PublishIpWhitelistTask(ipsToDelist, "del", "0", "white")
- }
- }
- return nil
- }
- // ExtractIpsFromBackends 从后端服务器地址列表中提取纯IP地址
- // 该函数解析 "IP:端口" 格式的后端地址,提取出纯IP地址用于白名单处理
- func (s *aidedTcpService) ExtractIpsFromBackends(backends []string) []string {
- var ips []string
- for _, backend := range backends {
- // 跳过空字符串
- if backend == "" {
- continue
- }
-
- // 解析 "IP:端口" 格式
- if ip, _, err := net.SplitHostPort(backend); err == nil && ip != "" {
- ips = append(ips, ip)
- }
- }
- return ips
- }
- // PrepareWafData 准备WAF配置数据
- // 该函数的作用是根据请求参数准备创建CDN网站所需的所有配置数据,包括:
- // 1. 获取全局配置信息(用户、主机、网关等)
- // 2. 构建 TCP 代理的监听配置 JSON
- // 3. 组装 CDN 创建网站的表单数据
- func (s *aidedTcpService) PrepareWafData(ctx context.Context, req *v1.TcpForwardingRequest) (RequireResponse, v1.WebsiteSend, error) {
- // 获取全局配置信息,包括用户信息、网关IP等
- require, err := s.wafformatter.Require(ctx, v1.GlobalRequire{
- HostId: req.HostId,
- Uid: req.Uid,
- Comment: req.TcpForwardingData.Comment,
- })
- if err != nil {
- return RequireResponse{}, v1.WebsiteSend{}, fmt.Errorf("获取全局配置信息失败: %w", err)
- }
- // 验证实例配置是否完整
- if require.Uid == 0 {
- return RequireResponse{}, v1.WebsiteSend{}, fmt.Errorf("请先配置实例,确保用户信息和网关配置正确")
- }
- // 构建 TCP 监听配置
- tcpConfig, err := s.BuildTcpListenConfig(require.GatewayIps, req.TcpForwardingData.Port)
- if err != nil {
- return RequireResponse{}, v1.WebsiteSend{}, fmt.Errorf("构建 TCP 监听配置失败: %w", err)
- }
- // 组装 CDN 创建网站的表单数据
- formData := v1.WebsiteSend{
- UserId: int64(require.CdnUid),
- Type: "tcpProxy",
- Name: require.Tag,
- Description: req.TcpForwardingData.Comment,
- TcpJSON: tcpConfig,
- ServerGroupIds: []int64{int64(require.GroupId)},
- NodeClusterId: 2, // 默认节点集群ID
- }
- return require, formData, nil
- }
- // BuildTcpListenConfig 构建 TCP 监听配置 JSON
- // 该函数将网关IP列表和端口转换为 CDN 所需的 JSON 配置格式
- func (s *aidedTcpService) BuildTcpListenConfig(gatewayIps []string, portStr string) ([]byte, error) {
- if len(gatewayIps) == 0 {
- return nil, fmt.Errorf("网关IP列表不能为空")
- }
- // 验证端口字符串不为空
- if portStr == "" {
- return nil, fmt.Errorf("端口号不能为空")
- }
- // 转换端口字符串为整数并验证范围
- port, err := strconv.Atoi(portStr)
- if err != nil {
- return nil, fmt.Errorf("端口号格式不合法: %s", portStr)
- }
- if port <= 0 || port > 65535 {
- return nil, fmt.Errorf("端口号不合法: %d,必须在 1-65535 范围内", port)
- }
- // 构建监听配置
- var listenConfigs []v1.Listen
- for _, gatewayIp := range gatewayIps {
- if gatewayIp == "" {
- continue // 跳过空的IP
- }
- listenConfigs = append(listenConfigs, v1.Listen{
- Protocol: "tcp",
- Host: gatewayIp,
- Port: portStr,
- })
- }
- if len(listenConfigs) == 0 {
- return nil, fmt.Errorf("没有有效的网关IP配置")
- }
- // 组装最终的 JSON 配置
- tcpJSON := v1.TypeJSON{
- IsOn: true,
- Listen: listenConfigs,
- }
- byteData, err := json.Marshal(tcpJSON)
- if err != nil {
- return nil, fmt.Errorf("序列化 TCP 配置失败: %w", err)
- }
- return byteData, nil
- }
- // BuildTcpForwardingModel 构建 TCP 转发主记录模型
- // 该函数将请求数据转换为数据库模型,包含主机、CDN网站、端口等信息
- func (s *aidedTcpService) BuildTcpForwardingModel(req *v1.TcpForwardingDataRequest, ruleId int, require RequireResponse) *model.Tcpforwarding {
- return &model.Tcpforwarding{
- HostId: require.HostId,
- CdnWebId: ruleId,
- Port: req.Port,
- Comment: req.Comment,
- Proxy: req.Proxy,
- }
- }
- // BuildTcpRuleModel 构建 TCP 转发规则记录模型
- // 该函数构建包含后端服务器列表和 CDN 源站ID映射的规则记录
- func (s *aidedTcpService) BuildTcpRuleModel(reqData *v1.TcpForwardingDataRequest, require RequireResponse, localDbId int, cdnOriginIds map[string]int64) *model.TcpForwardingRule {
- return &model.TcpForwardingRule{
- Uid: require.Uid,
- HostId: require.HostId,
- TcpId: localDbId,
- CdnOriginIds: cdnOriginIds,
- BackendList: reqData.BackendList,
- }
- }
- // SaveToDatabase 保存 TCP 转发配置到数据库
- // 该函数分别保存主记录(基本信息)和规则记录(后端服务器和源站ID映射)
- func (s *aidedTcpService) SaveToDatabase(ctx context.Context, req *v1.TcpForwardingRequest, require RequireResponse, tcpId int64, cdnOriginIds map[string]int64) (int, error) {
- // 保存主记录
- tcpModel := s.BuildTcpForwardingModel(&req.TcpForwardingData, int(tcpId), require)
- id, err := s.tcpRepository.AddTcpforwarding(ctx, tcpModel)
- if err != nil {
- return 0, fmt.Errorf("保存TCP转发记录失败: %w", err)
- }
- // 保存规则记录
- tcpRuleModel := s.BuildTcpRuleModel(&req.TcpForwardingData, require, id, cdnOriginIds)
- if _, err := s.tcpRepository.AddTcpforwardingIps(ctx, *tcpRuleModel); err != nil {
- return 0, fmt.Errorf("保存TCP转发规则失败: %w", err)
- }
- return id, nil
- }
- // UpdateDatabaseRecords 更新数据库记录
- // 该函数更新 TCP 转发的主记录和规则记录,同步最新的配置变更
- func (s *aidedTcpService) UpdateDatabaseRecords(ctx context.Context, req *v1.TcpForwardingRequest, oldData *model.Tcpforwarding, require RequireResponse, ipData *model.TcpForwardingRule) error {
- // 更新主记录
- tcpModel := s.BuildTcpForwardingModel(&req.TcpForwardingData, oldData.CdnWebId, require)
- tcpModel.Id = req.TcpForwardingData.Id
- if err := s.tcpRepository.EditTcpforwarding(ctx, tcpModel); err != nil {
- return fmt.Errorf("更新TCP转发记录失败: %w", err)
- }
- // 更新规则记录
- tcpRuleModel := s.BuildTcpRuleModel(&req.TcpForwardingData, require, req.TcpForwardingData.Id, ipData.CdnOriginIds)
- if err := s.tcpRepository.EditTcpforwardingIps(ctx, *tcpRuleModel); err != nil {
- return fmt.Errorf("更新TCP转发规则失败: %w", err)
- }
- return nil
- }
- // CleanupDatabaseRecords 清理数据库记录
- // 该函数删除 TCP 转发相关的所有数据库记录,包括主记录和规则记录
- func (s *aidedTcpService) CleanupDatabaseRecords(ctx context.Context, id int) error {
- if err := s.tcpRepository.DeleteTcpforwarding(ctx, int64(id)); err != nil {
- return fmt.Errorf("删除TCP转发主记录失败: %w", err)
- }
- if err := s.tcpRepository.DeleteTcpForwardingIpsById(ctx, id); err != nil {
- return fmt.Errorf("删除TCP转发规则记录失败: %w", err)
- }
- return nil
- }
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