feat(auth): implement session-based token management with revocation support
Add Session model, SessionService, and SessionRepository to track user login sessions and enable token revocation on auth-critical events. - Introduce explicit TokenType (access/refresh) in JWT claims to prevent refresh token misuse via access token endpoints - Add SessionID field to JWT claims, enabling stateless JWT validation against revoked sessions - Replace legacy Auth middleware with RequireAuth/OptionalAuth pipeline that validates token type, account status, and session validity - Implement session revocation on password change, reset, user ban/inactive, and explicit logout - Add Principal cache with active invalidation for banned/role-changed users - Fix IDOR vulnerability: GetMessagesByCursor now validates currentUserID is conversation participant via GetParticipantStrict - Add group member visibility checks: announcements, group info, member list now require group membership - Simplify Casbin policy: remove g grouping, use r.sub == p.sub matcher with globMatch; user_roles table is single source of truth for roles - Add migration logic to clean legacy casbin g rules and migrate old p rules from path-style to admin/<domain> resource naming
This commit is contained in:
287
internal/middleware/auth_pipeline.go
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287
internal/middleware/auth_pipeline.go
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package middleware
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import (
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"context"
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"errors"
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"net/http"
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"strings"
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"time"
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"github.com/gin-gonic/gin"
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"go.uber.org/zap"
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"gorm.io/gorm"
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"with_you/internal/cache"
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apperrors "with_you/internal/errors"
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"with_you/internal/model"
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"with_you/internal/pkg/auth"
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"with_you/internal/pkg/jwt"
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"with_you/internal/pkg/response"
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"with_you/internal/service"
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)
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// 认证管道相关常量。
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const (
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// principalCacheTTL Principal 缓存 TTL:账户状态/角色变更后最多延迟生效时间。
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// 30s 内可容忍多一次 DB 查询,平衡安全即时性与登录热点流量。
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principalCacheTTL = 30 * time.Second
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// sessionCacheTTL 会话撤销状态缓存 TTL:登出/封禁后旧 token 在此时长内可能仍被放行。
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// 由于 session 表由服务端控制,30s 内的撤销延迟可接受;后续可调整为 0(不缓存)。
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sessionCacheTTL = 30 * time.Second
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)
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// IdentityProvider 认证管道依赖的身份与角色查询接口。
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//
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// 由 service 层实现并注入,避免中间件直接依赖具体 service;
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// 同时便于测试以 fake 注入。
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type IdentityProvider interface {
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// GetUserByID 加载用户实体(含状态、verification_status)。
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GetUserByID(ctx context.Context, userID string) (*model.User, error)
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// GetRolesForUser 返回用户的角色集合。
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GetRolesForUser(ctx context.Context, userID string) ([]string, error)
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// GetSessionByID 返回会话实体(用于校验是否撤销/过期)。
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// 当 sessionID 为空(旧 access token 兼容窗口)应返回 nil,nil。
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GetSessionByID(ctx context.Context, sessionID string) (*model.Session, error)
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}
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// principalCacheValue 缓存 Principal 的载体,便于区分 hit/miss 与缓存空角色。
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type principalCacheValue struct {
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Principal *auth.Principal
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}
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// RequireAuth 强制认证中间件。
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//
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// 流程:
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// 1. 提取 Bearer token,缺失 → 401。
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// 2. ParseAccessToken(拒绝 refresh token)。
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// 3. 从 cache/DB 加载用户与角色,组装 Principal。
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// 4. 校验账户状态:active 允许;pending_deletion 允许访问(业务策略:允许取消注销);
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// banned/inactive/其他 → 403。
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// 5. 校验 sessionID(sid 非空时):撤销/过期 → 401。
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// 6. Principal 写入 context。
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func RequireAuth(jwtService service.JWTService, idp IdentityProvider, cache cache.Cache) gin.HandlerFunc {
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return func(c *gin.Context) {
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claims, ok := extractAccessToken(c, jwtService)
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if !ok {
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authDeny(c, http.StatusUnauthorized, apperrors.ErrInvalidToken, "")
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return
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}
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principal, err := buildPrincipal(c.Request.Context(), idp, cache, claims)
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if err != nil {
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// 用户不存在或加载失败:以 401 处理(令牌虽有效但身份已失效)。
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authDeny(c, http.StatusUnauthorized, apperrors.ErrInvalidToken, claims.UserID)
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return
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}
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if err := checkAccountStatus(principal); err != nil {
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authDeny(c, http.StatusForbidden, err, principal.UserID)
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return
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}
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if err := validateSession(c.Request.Context(), idp, cache, principal); err != nil {
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authDeny(c, http.StatusUnauthorized, err, principal.UserID)
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return
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}
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auth.WithContext(c, principal)
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c.Next()
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}
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}
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// OptionalAuth 可选认证中间件。
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//
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// 行为:
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// - 缺失 Authorization 头 → 当游客,Principal 不写入 context,c.Next()。
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// - 携带了 token 但解析/状态/会话失败 → 401(语义更清晰,避免静默降级到游客)。
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func OptionalAuth(jwtService service.JWTService, idp IdentityProvider, cache cache.Cache) gin.HandlerFunc {
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return func(c *gin.Context) {
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authHeader := c.GetHeader("Authorization")
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if authHeader == "" {
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c.Next()
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return
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}
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// 格式明显错误(非 Bearer)→ 当游客,保持现有游客可见接口语义。
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prefix, token, found := strings.Cut(authHeader, " ")
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if !found || prefix != "Bearer" || token == "" {
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c.Next()
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return
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}
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claims, err := jwtService.ParseAccessToken(token)
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if err != nil {
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authDeny(c, http.StatusUnauthorized, apperrors.ErrInvalidToken, "")
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return
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}
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principal, err := buildPrincipal(c.Request.Context(), idp, cache, claims)
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if err != nil {
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authDeny(c, http.StatusUnauthorized, apperrors.ErrInvalidToken, claims.UserID)
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return
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}
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if err := checkAccountStatus(principal); err != nil {
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authDeny(c, http.StatusForbidden, err, principal.UserID)
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return
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}
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if err := validateSession(c.Request.Context(), idp, cache, principal); err != nil {
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authDeny(c, http.StatusUnauthorized, err, principal.UserID)
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return
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}
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auth.WithContext(c, principal)
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c.Next()
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}
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}
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// extractAccessToken 从请求中提取并解析 access token。
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//
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// 第二返回值 ok=false 表示应当拒绝(已写响应);true 表示已拿到 claims。
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func extractAccessToken(c *gin.Context, jwtService service.JWTService) (*jwt.Claims, bool) {
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authHeader := c.GetHeader("Authorization")
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if authHeader == "" {
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return nil, false
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}
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prefix, token, found := strings.Cut(authHeader, " ")
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if !found || prefix != "Bearer" || token == "" {
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return nil, false
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}
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claims, err := jwtService.ParseAccessToken(token)
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if err != nil {
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return nil, false
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}
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return claims, true
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}
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// buildPrincipal 从缓存或 IDP 加载用户/角色,组装 Principal。
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func buildPrincipal(ctx context.Context, idp IdentityProvider, cch cache.Cache, claims *jwt.Claims) (*auth.Principal, error) {
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cacheKey := ""
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if cch != nil {
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cacheKey = auth.PrincipalCacheKey(claims.UserID)
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if cached, ok := cch.Get(cacheKey); ok {
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if v, ok := cached.(*principalCacheValue); ok && v != nil {
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return v.Principal, nil
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}
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}
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}
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user, err := idp.GetUserByID(ctx, claims.UserID)
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if err != nil {
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if errors.Is(err, gorm.ErrRecordNotFound) {
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return nil, apperrors.ErrUserNotFound
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}
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return nil, err
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}
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roles, err := idp.GetRolesForUser(ctx, claims.UserID)
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if err != nil {
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return nil, err
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}
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if roles == nil {
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roles = []string{}
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}
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p := &auth.Principal{
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UserID: user.ID,
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Username: user.Username,
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SessionID: claims.SessionID,
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Status: user.Status,
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VerificationStatus: user.VerificationStatus,
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Roles: roles,
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TokenID: claims.ID,
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IsLegacyToken: claims.TokenType == "",
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}
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if cacheKey != "" {
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cch.Set(cacheKey, &principalCacheValue{Principal: p}, principalCacheTTL)
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}
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return p, nil
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}
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// checkAccountStatus 校验账户状态。
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//
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// 策略:active 允许;pending_deletion 允许(用户可访问取消注销接口);
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// banned/inactive/其他拒绝。pending_deletion 在管理后台路由由 RequireActive 单独再加一道。
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func checkAccountStatus(p *auth.Principal) error {
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switch p.Status {
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case model.UserStatusActive, model.UserStatusPendingDeletion:
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return nil
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case model.UserStatusBanned:
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return apperrors.ErrUserBanned
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case model.UserStatusInactive:
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return apperrors.ErrAccountInactive
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default:
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return apperrors.ErrAccountInactive
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}
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}
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// validateSession 校验会话有效性。
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//
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// 旧 access token(无 sid)在兼容窗口内跳过会话校验,由 access TTL 自然过期收口。
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func validateSession(ctx context.Context, idp IdentityProvider, cch cache.Cache, p *auth.Principal) error {
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if p.SessionID == "" {
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// 旧 token 兼容窗口。
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return nil
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}
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if cch != nil {
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key := auth.SessionCacheKey(p.SessionID)
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if cached, ok := cch.Get(key); ok {
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if valid, ok := cached.(bool); ok && !valid {
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return apperrors.ErrSessionRevoked
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}
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}
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}
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session, err := idp.GetSessionByID(ctx, p.SessionID)
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if err != nil {
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if errors.Is(err, gorm.ErrRecordNotFound) {
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return apperrors.ErrSessionRevoked
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}
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return err
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}
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if session == nil || !session.IsValid(time.Now()) {
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if cch != nil {
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cch.Set(auth.SessionCacheKey(p.SessionID), false, sessionCacheTTL)
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}
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return apperrors.ErrSessionRevoked
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}
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if cch != nil {
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cch.Set(auth.SessionCacheKey(p.SessionID), true, sessionCacheTTL)
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}
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return nil
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}
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// InvalidatePrincipalCache 与 InvalidateSessionCache 已迁移至 internal/pkg/auth 包,
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// 以避免 service → middleware 的包循环(service 层修改用户状态后需要失效缓存,
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// 但 middleware 又依赖 service 接口)。
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//
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// 保留本文件中的 InvalidatePrincipalCache/InvalidateSessionCache 仅作为转发会引入
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// 循环,故直接删除;调用方请使用 auth.InvalidatePrincipalCache / auth.InvalidateSessionCache。
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// authDeny 拒绝访问的统一响应:记日志 + 返回结构化错误。
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func authDeny(c *gin.Context, statusCode int, appErr error, userID string) {
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zap.L().Warn("auth denied",
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zap.Int("status", statusCode),
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zap.String("user_id", userID),
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zap.String("ip", c.ClientIP()),
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zap.String("user_agent", c.GetHeader("User-Agent")),
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zap.String("path", c.Request.URL.Path),
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zap.Any("err", appErr),
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)
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code := apperrors.ErrInvalidToken.Code
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msg := apperrors.ErrInvalidToken.Message
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var target *apperrors.AppError
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if errors.As(appErr, &target) {
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code = target.Code
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msg = target.Message
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}
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response.ErrorWithStringCode(c, statusCode, code, msg)
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c.Abort()
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}
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