79 lines
1.8 KiB
Go
79 lines
1.8 KiB
Go
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package middleware
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import (
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"chat/internal/config"
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"context"
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"net/http"
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"strings"
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"github.com/golang-jwt/jwt/v4"
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"github.com/zeromicro/go-zero/core/logx"
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)
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type AnonMiddleware struct {
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jwtSecret string
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}
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func NewAnonMiddleware(c config.Config) *AnonMiddleware {
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return &AnonMiddleware{
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jwtSecret: c.JWT.Secret,
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}
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}
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func (m *AnonMiddleware) Handle(next http.HandlerFunc) http.HandlerFunc {
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return func(w http.ResponseWriter, r *http.Request) {
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// 從 Authorization header 提取 token
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authHeader := r.Header.Get("Authorization")
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if authHeader == "" {
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http.Error(w, "Authorization header is required", http.StatusUnauthorized)
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return
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}
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// 移除 "Bearer " 前綴
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parts := strings.Split(authHeader, " ")
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if len(parts) != 2 || parts[0] != "Bearer" {
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http.Error(w, "Invalid authorization header format", http.StatusUnauthorized)
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return
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}
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tokenString := parts[1]
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// 解析和驗證 JWT
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token, err := jwt.Parse(tokenString, func(token *jwt.Token) (interface{}, error) {
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// 驗證簽名方法
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if _, ok := token.Method.(*jwt.SigningMethodHMAC); !ok {
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return nil, jwt.ErrSignatureInvalid
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}
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return []byte(m.jwtSecret), nil
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})
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if err != nil {
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logx.Errorf("Failed to parse JWT: %v", err)
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http.Error(w, "Invalid token", http.StatusUnauthorized)
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return
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}
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if !token.Valid {
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http.Error(w, "Invalid token", http.StatusUnauthorized)
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return
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}
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// 提取 UID
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claims, ok := token.Claims.(jwt.MapClaims)
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if !ok {
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http.Error(w, "Invalid token claims", http.StatusUnauthorized)
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return
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}
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uid, ok := claims["uid"].(string)
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if !ok || uid == "" {
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http.Error(w, "UID not found in token", http.StatusUnauthorized)
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return
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}
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// 將 UID 存入 context
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ctx := context.WithValue(r.Context(), "uid", uid)
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next(w, r.WithContext(ctx))
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}
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}
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