srvdav/vendor/github.com/abbot/go-http-auth/examples/context.go

61 lines
1.4 KiB
Go

// +build ignore
/*
Example application using NewContext/FromContext
Build with:
go build context.go
*/
package main
import (
"fmt"
"net/http"
auth ".."
"golang.org/x/net/context"
)
func Secret(user, realm string) string {
if user == "john" {
// password is "hello"
return "b98e16cbc3d01734b264adba7baa3bf9"
}
return ""
}
type ContextHandler interface {
ServeHTTP(ctx context.Context, w http.ResponseWriter, r *http.Request)
}
type ContextHandlerFunc func(ctx context.Context, w http.ResponseWriter, r *http.Request)
func (f ContextHandlerFunc) ServeHTTP(ctx context.Context, w http.ResponseWriter, r *http.Request) {
f(ctx, w, r)
}
func handle(ctx context.Context, w http.ResponseWriter, r *http.Request) {
authInfo := auth.FromContext(ctx)
authInfo.UpdateHeaders(w.Header())
if authInfo == nil || !authInfo.Authenticated {
http.Error(w, http.StatusText(http.StatusUnauthorized), http.StatusUnauthorized)
return
}
fmt.Fprintf(w, "<html><body><h1>Hello, %s!</h1></body></html>", authInfo.Username)
}
func authenticatedHandler(a auth.AuthenticatorInterface, h ContextHandler) http.Handler {
return http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
ctx := a.NewContext(context.Background(), r)
h.ServeHTTP(ctx, w, r)
})
}
func main() {
authenticator := auth.NewDigestAuthenticator("example.com", Secret)
http.Handle("/", authenticatedHandler(authenticator, ContextHandlerFunc(handle)))
http.ListenAndServe(":8080", nil)
}