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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,114 @@ | ||
| package auth | ||
|
|
||
| import ( | ||
| // "fmt" | ||
| "encoding/json" | ||
| "net/http" | ||
| "os" | ||
| "time" | ||
|
|
||
| "github.com/dgrijalva/jwt-go" | ||
| ) | ||
|
|
||
| var jwtKey = []byte(os.Getenv("JWT_SECRET")) | ||
| var users = map[string]string{} | ||
|
|
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| type Claims struct { | ||
| Username string "json:username" | ||
| jwt.StandardClaims | ||
| } | ||
|
|
||
| func GenerateJWT(w http.ResponseWriter, r *http.Request) { | ||
| username := r.URL.Query().Get("username") | ||
| if username == "" { | ||
| http.Error(w, "Username is required", http.StatusBadRequest) | ||
| return | ||
| } | ||
|
|
||
| expirationTime := time.Now().Add(30 * time.Minute) | ||
| claims := &Claims{ | ||
| Username: username, | ||
| StandardClaims: jwt.StandardClaims{ | ||
| ExpiresAt: expirationTime.Unix(), | ||
| IssuedAt: time.Now().Unix(), | ||
| Issuer: "Linky", | ||
| }, | ||
| } | ||
| token := jwt.NewWithClaims(jwt.SigningMethodHS256, claims) | ||
| tokenString, err := token.SignedString(jwtKey) | ||
| if err != nil { | ||
| http.Error(w, "Could not generate token", http.StatusInternalServerError) | ||
| return | ||
| } | ||
|
|
||
| w.Header().Set("Content-Type", "application/json") | ||
| json.NewEncoder(w).Encode(map[string]string{"token": tokenString}) | ||
| } | ||
|
|
||
| func ValidateJWT(tokenString string) (string, error) { | ||
| claims := &Claims{} | ||
| token, err := jwt.ParseWithClaims(tokenString, claims, func(token *jwt.Token) (interface{}, error) { | ||
| return jwtKey, nil | ||
| }) | ||
| if err != nil { | ||
| if err == jwt.ErrSignatureInvalid { | ||
| return "", http.ErrBodyNotAllowed | ||
| } | ||
| return "", err | ||
| } | ||
| if !token.Valid { | ||
| return "", http.ErrBodyNotAllowed | ||
| } | ||
| return claims.Username, nil | ||
| } | ||
|
|
||
| func TokenRequired(next http.Handler) http.Handler { | ||
| return http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) { | ||
| tokenString := r.Header.Get("Authorization") | ||
| if tokenString == "" { | ||
| http.Error(w, "Token is missing", http.StatusForbidden) | ||
| return | ||
| } | ||
|
|
||
| username, err := ValidateJWT(tokenString) | ||
| if err != nil { | ||
| http.Error(w, err.Error(), http.StatusForbidden) | ||
| return | ||
| } | ||
|
|
||
| r.Header.Set("username", username) | ||
| next.ServeHTTP(w, r) | ||
| }) | ||
| } | ||
|
|
||
| func ProtectedRoute(w http.ResponseWriter, r *http.Request) { | ||
| http.Redirect(w, r, "http://localhost:4000/admin", http.StatusSeeOther) | ||
| } | ||
|
|
||
| func Register(w http.ResponseWriter, r *http.Request) { | ||
| var userData struct { | ||
| Username string `json:"user"` | ||
| Password string `json:"pass"` | ||
| } | ||
|
|
||
| if err := json.NewDecoder(r.Body).Decode(&userData); err != nil { | ||
| http.Error(w, err.Error(), http.StatusBadRequest) | ||
| return | ||
| } | ||
|
|
||
| if _, exists := users[userData.Username]; exists { | ||
| http.Error(w, "User already exists", http.StatusBadRequest) | ||
| return | ||
| } | ||
|
|
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| users[userData.Username] = userData.Password | ||
|
|
||
| w.Header().Set("Content-Type", "application/json") | ||
| w.WriteHeader(http.StatusOK) | ||
| json.NewEncoder(w).Encode(map[string]string{"message": "User registered successfully"}) | ||
| } | ||
|
|
||
| func ShowUsers(w http.ResponseWriter, r *http.Request) { | ||
| w.Header().Set("Content-Type", "application/json") | ||
| json.NewEncoder(w).Encode(users) | ||
| } |
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