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| 1 | +// +build ignore |
| 2 | + |
| 3 | +package main |
| 4 | + |
| 5 | +import ( |
| 6 | + "fmt" |
| 7 | + "log" |
| 8 | + "net/http" |
| 9 | + "os" |
| 10 | + "strings" |
| 11 | + "time" |
| 12 | + |
| 13 | + "github.com/gorilla/csrf" |
| 14 | + "github.com/gorilla/handlers" |
| 15 | + "github.com/gorilla/mux" |
| 16 | +) |
| 17 | + |
| 18 | +func main() { |
| 19 | + router := mux.NewRouter() |
| 20 | + |
| 21 | + loggingMiddleware := func(h http.Handler) http.Handler { |
| 22 | + return handlers.LoggingHandler(os.Stdout, h) |
| 23 | + } |
| 24 | + router.Use(loggingMiddleware) |
| 25 | + |
| 26 | + CSRFMiddleware := csrf.Protect( |
| 27 | + []byte("place-your-32-byte-long-key-here"), |
| 28 | + csrf.Secure(false), // false in development only! |
| 29 | + csrf.RequestHeader("X-CSRF-Token"), // Must be in CORS Allowed and Exposed Headers |
| 30 | + ) |
| 31 | + |
| 32 | + APIRouter := router.PathPrefix("/api").Subrouter() |
| 33 | + APIRouter.Use(CSRFMiddleware) |
| 34 | + APIRouter.HandleFunc("", Get).Methods(http.MethodGet) |
| 35 | + APIRouter.HandleFunc("", Post).Methods(http.MethodPost) |
| 36 | + |
| 37 | + CORSMiddleware := handlers.CORS( |
| 38 | + handlers.AllowCredentials(), |
| 39 | + handlers.AllowedOriginValidator( |
| 40 | + func(origin string) bool { |
| 41 | + return strings.HasPrefix(origin, "http://localhost") |
| 42 | + }, |
| 43 | + ), |
| 44 | + handlers.AllowedHeaders([]string{"X-CSRF-Token"}), |
| 45 | + handlers.ExposedHeaders([]string{"X-CSRF-Token"}), |
| 46 | + ) |
| 47 | + |
| 48 | + server := &http.Server{ |
| 49 | + Handler: CORSMiddleware(router), |
| 50 | + Addr: "localhost:8080", |
| 51 | + ReadTimeout: 60 * time.Second, |
| 52 | + WriteTimeout: 60 * time.Second, |
| 53 | + } |
| 54 | + |
| 55 | + fmt.Println("starting http server on localhost:8080") |
| 56 | + log.Panic(server.ListenAndServe()) |
| 57 | +} |
| 58 | + |
| 59 | +func Get(w http.ResponseWriter, r *http.Request) { |
| 60 | + w.Header().Add("X-CSRF-Token", csrf.Token(r)) |
| 61 | + w.WriteHeader(http.StatusOK) |
| 62 | +} |
| 63 | + |
| 64 | +func Post(w http.ResponseWriter, r *http.Request) { |
| 65 | + w.WriteHeader(http.StatusOK) |
| 66 | +} |
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