Add support for default actor name for webfinger

http.go

@@ -46,8 +46,11 @@ func Serve() {
 		re := regexp.MustCompile(`^acct:(.*)@` + regexp.QuoteMeta(urlBaseUrl.Host) + `$`)
 		name = re.ReplaceAllString(name, "$1")
 		actor := actors[name]
-		// error out if this actor does not exist
-		if actor == nil {
+		if actor == nil && len(defaultActor) > 0 {
+			// return default actor
+			actor = actors[defaultActor]
+		} else if actor == nil {
+			// error out if this actor does not exist
 			w.WriteHeader(http.StatusNotFound)
 			return
 		}
@@ -169,4 +172,4 @@ func sendWebmention(client *webmention.Client, actor *Actor, mentioningLink, men
 		return
 	}
 	log.Println("Sent webmention to " + mentionedLink)
-}
+}

setup.go

@@ -10,6 +10,7 @@ var slash = string(os.PathSeparator)
 var baseURL string
 var storage = "storage"
 var actors = make(map[string]*Actor)
+var defaultActor = ""
 
 const libName = "jsonpub"
 const version = "0.0.1"
@@ -66,4 +67,10 @@ func SetupActors() {
 			os.Exit(1)
 		}
 	}
-}
+	defaultName := os.Getenv("DEFAULT_NAME")
+	if len(defaultName) < 1 {
+		fmt.Printf("DEFAULT_NAME not configured")
+	} else {
+		defaultActor = defaultName
+	}
+}