Add more helper functions

examples/auth/auth.go

@@ -85,7 +85,7 @@ func login(rw *gmi.ResponseWriter, req *gmi.Request) {
 			rw.WriteHeader(gmi.StatusRedirect, "/login/password")
 		}
 	} else {
-		rw.WriteHeader(gmi.StatusClientCertificateRequired, "Certificate required")
+		rw.WriteHeader(gmi.StatusCertificateRequired, "Certificate required")
 	}
 }
 
@@ -93,7 +93,7 @@ func loginPassword(rw *gmi.ResponseWriter, req *gmi.Request) {
 	if len(req.TLS.PeerCertificates) > 0 {
 		session, ok := getSession(req.TLS.PeerCertificates[0])
 		if !ok {
-			rw.WriteHeader(gmi.StatusCertificateNotAuthorised, "Not authorized")
+			rw.WriteHeader(gmi.StatusCertificateNotAuthorized, "Not authorized")
 			return
 		}
 
@@ -109,7 +109,7 @@ func loginPassword(rw *gmi.ResponseWriter, req *gmi.Request) {
 			}
 		}
 	} else {
-		rw.WriteHeader(gmi.StatusClientCertificateRequired, "Certificate required")
+		rw.WriteHeader(gmi.StatusCertificateRequired, "Certificate required")
 	}
 }
 
@@ -126,7 +126,7 @@ func profile(rw *gmi.ResponseWriter, req *gmi.Request) {
 	if len(req.TLS.PeerCertificates) > 0 {
 		session, ok := getSession(req.TLS.PeerCertificates[0])
 		if !ok {
-			rw.WriteHeader(gmi.StatusCertificateNotAuthorised, "Certificate not authorized")
+			rw.WriteHeader(gmi.StatusCertificateNotAuthorized, "Certificate not authorized")
 			return
 		}
 		user := logins[session.username]
@@ -134,7 +134,7 @@ func profile(rw *gmi.ResponseWriter, req *gmi.Request) {
 		rw.WriteHeader(gmi.StatusSuccess, "text/gemini")
 		rw.Write([]byte(profile))
 	} else {
-		rw.WriteHeader(gmi.StatusClientCertificateRequired, "Certificate required")
+		rw.WriteHeader(gmi.StatusCertificateRequired, "Certificate required")
 	}
 }
 
@@ -142,17 +142,17 @@ func admin(rw *gmi.ResponseWriter, req *gmi.Request) {
 	if len(req.TLS.PeerCertificates) > 0 {
 		session, ok := getSession(req.TLS.PeerCertificates[0])
 		if !ok {
-			rw.WriteHeader(gmi.StatusCertificateNotAuthorised, "Certificate not authorized")
+			rw.WriteHeader(gmi.StatusCertificateNotAuthorized, "Certificate not authorized")
 			return
 		}
 		user := logins[session.username]
 		if !user.admin {
-			rw.WriteHeader(gmi.StatusCertificateNotAuthorised, "Admins only!")
+			rw.WriteHeader(gmi.StatusCertificateNotAuthorized, "Admins only!")
 			return
 		}
 		rw.WriteHeader(gmi.StatusSuccess, "text/gemini")
 		rw.Write([]byte("Welcome to the admin portal.\n"))
 	} else {
-		rw.WriteHeader(gmi.StatusClientCertificateRequired, "Certificate required")
+		rw.WriteHeader(gmi.StatusCertificateRequired, "Certificate required")
 	}
 }

examples/client/client.go

@@ -54,6 +54,7 @@ func sendRequest(req *gmi.Request) error {
 		return err
 	}
 
+	// TODO: More fine-grained analysis of the status code.
 	switch resp.Status / 10 {
 	case gmi.StatusClassInput:
 		fmt.Printf("%s: ", resp.Meta)
@@ -78,7 +79,7 @@ func sendRequest(req *gmi.Request) error {
 		return fmt.Errorf("Temporary failure: %s", resp.Meta)
 	case gmi.StatusClassPermanentFailure:
 		return fmt.Errorf("Permanent failure: %s", resp.Meta)
-	case gmi.StatusClassClientCertificateRequired:
+	case gmi.StatusClassCertificateRequired:
 		fmt.Println("Generating client certificate for", req.Hostname())
 		return nil // TODO: Generate and store client certificate
 	}

gemini.go

@@ -7,34 +7,34 @@ import (
 
 // Status codes.
 const (
-	StatusInput                     = 10
-	StatusSensitiveInput            = 11
-	StatusSuccess                   = 20
-	StatusRedirect                  = 30
-	StatusRedirectPermanent         = 31
-	StatusTemporaryFailure          = 40
-	StatusServerUnavailable         = 41
-	StatusCGIError                  = 42
-	StatusProxyError                = 43
-	StatusSlowDown                  = 44
-	StatusPermanentFailure          = 50
-	StatusNotFound                  = 51
-	StatusGone                      = 52
-	StatusProxyRequestRefused       = 53
-	StatusBadRequest                = 59
-	StatusClientCertificateRequired = 60
-	StatusCertificateNotAuthorised  = 61
-	StatusCertificateNotValid       = 62
+	StatusInput                    = 10
+	StatusSensitiveInput           = 11
+	StatusSuccess                  = 20
+	StatusRedirect                 = 30
+	StatusRedirectPermanent        = 31
+	StatusTemporaryFailure         = 40
+	StatusServerUnavailable        = 41
+	StatusCGIError                 = 42
+	StatusProxyError               = 43
+	StatusSlowDown                 = 44
+	StatusPermanentFailure         = 50
+	StatusNotFound                 = 51
+	StatusGone                     = 52
+	StatusProxyRequestRefused      = 53
+	StatusBadRequest               = 59
+	StatusCertificateRequired      = 60
+	StatusCertificateNotAuthorized = 61
+	StatusCertificateNotValid      = 62
 )
 
 // Status code categories.
 const (
-	StatusClassInput                     = 1
-	StatusClassSuccess                   = 2
-	StatusClassRedirect                  = 3
-	StatusClassTemporaryFailure          = 4
-	StatusClassPermanentFailure          = 5
-	StatusClassClientCertificateRequired = 6
+	StatusClassInput               = 1
+	StatusClassSuccess             = 2
+	StatusClassRedirect            = 3
+	StatusClassTemporaryFailure    = 4
+	StatusClassPermanentFailure    = 5
+	StatusClassCertificateRequired = 6
 )
 
 var (

server.go

@@ -174,7 +174,7 @@ type Handler interface {
 	Serve(*ResponseWriter, *Request)
 }
 
-// NotFound replies to the request with a NotFound status code.
+// NotFound replies to the request with the NotFound status code.
 func NotFound(rw *ResponseWriter, req *Request) {
 	rw.WriteHeader(StatusNotFound, "Not found")
 }
@@ -185,6 +185,17 @@ func NotFoundHandler() Handler {
 	return HandlerFunc(NotFound)
 }
 
+// Gone replies to the request with the Gone status code.
+func Gone(rw *ResponseWriter, req *Request) {
+	rw.WriteHeader(StatusGone, "Gone")
+}
+
+// GoneHandler returns a simple handler that responds to each request with
+// the status code Gone.
+func GoneHandler() Handler {
+	return HandlerFunc(Gone)
+}
+
 // Redirect replies to the request with a redirect to the given url.
 // If permanent is true, Redirect will respond with a permanent redirect.
 func Redirect(rw *ResponseWriter, req *Request, url string, permanent bool) {
@@ -217,6 +228,32 @@ func InputHandler(prompt string) Handler {
 	})
 }
 
+// Sensitive responds to the request with a request for sensitive input
+// using the given prompt.
+func SensitiveInput(rw *ResponseWriter, req *Request, prompt string) {
+	rw.WriteHeader(StatusSensitiveInput, prompt)
+}
+
+// SensitiveInputHandler returns a simpler handler that responds to each request
+// with a request for sensitive input.
+func SensitiveInputHandler(prompt string) Handler {
+	return HandlerFunc(func(rw *ResponseWriter, req *Request) {
+		SensitiveInput(rw, req, prompt)
+	})
+}
+
+// CertificateRequired responds to the request with the CertificateRequired
+// status code.
+func CertificateRequired(rw *ResponseWriter, req *Request) {
+	rw.WriteHeader(StatusCertificateRequired, "Certificate required")
+}
+
+// CertificateNotAuthorized responds to the request with
+// the CertificateNotAuthorized status code.
+func CertificateNotAuthorized(rw *ResponseWriter, req *Request) {
+	rw.WriteHeader(StatusCertificateNotAuthorized, "Certificate not authorized")
+}
+
 // ServeMux is a Gemini request multiplexer.
 // It matches the URL of each incoming request against a list of registered
 // patterns and calls the handler for the pattern that most closesly matches