iamatulsingh
79 lines
1.9 KiB
Go
79 lines
1.9 KiB
Go
package auth
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import (
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"encoding/json"
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"fmt"
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"net/http"
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"strings"
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"time"
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"whatsapp-bridge/config"
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"github.com/golang-jwt/jwt/v5"
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)
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type Claims struct {
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Service string `json:"service"`
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jwt.RegisteredClaims
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}
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func LoginHandler(cfg *config.Config) http.HandlerFunc {
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return func(w http.ResponseWriter, r *http.Request) {
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auth := r.Header.Get("Authorization")
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if auth != fmt.Sprintf("Bearer %s", cfg.APIKey) {
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fmt.Println("Invalid API key")
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http.Error(w, "Invalid credentials", http.StatusUnauthorized)
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return
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}
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claims := Claims{
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Service: "mcp-server",
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RegisteredClaims: jwt.RegisteredClaims{
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ExpiresAt: jwt.NewNumericDate(time.Now().Add(45 * time.Minute)),
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IssuedAt: jwt.NewNumericDate(time.Now()),
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},
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}
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token := jwt.NewWithClaims(jwt.SigningMethodHS256, claims)
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signed, err := token.SignedString(cfg.JWTSecret)
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if err != nil {
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fmt.Println("Failed to sign token:", err)
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http.Error(w, "Failed to generate token", http.StatusInternalServerError)
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return
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}
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json.NewEncoder(w).Encode(map[string]string{"token": signed})
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}
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}
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// JwtAuthMiddleware Protect normal API endpoints
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func JwtAuthMiddleware(cfg *config.Config, next http.Handler) http.Handler {
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return http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
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auth := r.Header.Get("Authorization")
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if !strings.HasPrefix(auth, "Bearer ") {
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http.Error(w, "Missing or invalid Authorization header", http.StatusUnauthorized)
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return
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}
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tokenStr := strings.TrimPrefix(auth, "Bearer ")
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token, err := jwt.ParseWithClaims(tokenStr, &Claims{}, func(token *jwt.Token) (interface{}, error) {
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return cfg.JWTSecret, nil
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})
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if err != nil {
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fmt.Println("Parse error:", err)
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http.Error(w, "Invalid or expired token", http.StatusUnauthorized)
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return
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}
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if !token.Valid {
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fmt.Println("Token is NOT valid")
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http.Error(w, "Invalid or expired token", http.StatusUnauthorized)
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return
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}
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next.ServeHTTP(w, r)
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})
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}
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