support multi host hopefully

config.go

@@ -12,7 +12,7 @@ type (
 	Config struct {
 		Cert    Cert
 		Port    int
-		Endpoints map[string]Endpoint
+		Domains map[string]map[string]Endpoint
 	}
 
 	Cert struct {
@@ -21,7 +21,6 @@ type (
 	}
 
 	Endpoint struct {
-		From      string
 		To        string
 		BasicAuth string
 	}
@@ -34,7 +33,7 @@ func NewConfig() (Config, error) {
 	fs.StringVar(&c.Cert.CRT, "crt", "", "path to .crt")
 	fs.StringVar(&c.Cert.Key, "key", "", "path to .key")
 	fs.IntVar(&c.Port, "p", 56112, "port to listen on")
-	f := fs.String("f", "/dev/null", `file of {endpoints:{"": {from:"", to:"", basicAuth:""}}}`)
+	f := fs.String("f", "/dev/null", `file of {domain:{"":{"": {to:"", basicAuth:""}}}}`)
 	if err := fs.Parse(os.Args[1:]); err != nil {
 		return c, err
 	}
@@ -43,8 +42,8 @@ func NewConfig() (Config, error) {
 		return c, err
 	} else if err := yaml.Unmarshal(b, &c); err != nil {
 		return c, err
-	} else if len(c.Endpoints) == 0 {
-		return c, fmt.Errorf("no endpoints configured")
+	} else if len(c.Domains) == 0 {
+		return c, fmt.Errorf("no domains configured")
 	}
 
 	return c, nil

main.go

@@ -33,7 +33,8 @@ func main() {
 }
 
 func (c Config) ServeHTTP(w http.ResponseWriter, r *http.Request) {
-	if c.endpoint(r).To == "" {
+	endpoint := c.endpoint(r)
+	if endpoint.To == "" {
 		http.NotFound(w, r)
 		return
 	}
@@ -55,7 +56,6 @@ func (c Config) ServeHTTP(w http.ResponseWriter, r *http.Request) {
 		return
 	}
 
-	endpoint := c.endpoint(r)
 	u, err := url.Parse(endpoint.To)
 	if err != nil {
 		log.Printf("[%s] %v", c.key(r), err)
@@ -111,7 +111,13 @@ func (c Config) basicAuth(w http.ResponseWriter, r *http.Request) bool {
 }
 
 func (c Config) endpoint(r *http.Request) Endpoint {
-	return c.Endpoints[c.key(r)]
+	key := c.key(r)
+	domain := strings.TrimPrefix(r.Host, key)
+	m, ok := c.Domains[domain]
+	if !ok {
+		return Endpoint{}
+	}
+	return m[c.key(r)]
 }
 
 type redirPurge struct {

testdata/gitea.yaml

@@ -0,0 +1,6 @@
+port: 443
+domains:
+  .bel.blue:
+    gitea: 
+      to: http://192.168.0.86:59526
+      basicAuth: ""

testdata/test.yaml

@@ -1,6 +1,6 @@
 #port: 51552 # priority over cli
-endpoints:
+domains:
   foo:
-    from: foo.blapointe.com
+    bar:
       to: http://192.168.0.86:51552
       basicAuth: u:p