From a580e5f3b54889fdd1441be68af44f57a3797807 Mon Sep 17 00:00:00 2001
From: Christian Pointner <equinox@helsinki.at>
Date: Sat, 24 Sep 2016 17:34:22 +0200
Subject: added basic web interface


diff --git a/sample-config.toml b/sample-config.toml
index 1d50503..d0dc81f 100644
--- a/sample-config.toml
+++ b/sample-config.toml
@@ -36,6 +36,7 @@ inputs = [ { number = 1, server = "master", channel = "main" },
 
   [clients.web]
   addr = ":4080"
+  static_files = "/usr/share/rhctl/static/"
 
   [clients.telnet]
   addr = "localhost:4023"
diff --git a/src/rhctl/conf.go b/src/rhctl/conf.go
index 3e35abb..c163b60 100644
--- a/src/rhctl/conf.go
+++ b/src/rhctl/conf.go
@@ -88,7 +88,8 @@ type Config struct {
 
 	Clients struct {
 		Web struct {
-			Address string `toml:"addr"`
+			Address   string `toml:"addr"`
+			StaticDir string `toml:"static_files"`
 		}
 		Telnet struct {
 			Address string `toml:"addr"`
diff --git a/src/rhctl/main.go b/src/rhctl/main.go
index 86e7aec..b0b57e6 100644
--- a/src/rhctl/main.go
+++ b/src/rhctl/main.go
@@ -104,6 +104,7 @@ func main() {
 
 	// initializing non-essential parts, like control-interfaces aka clients
 	telnet := TelnetInit(conf, ctrl)
+	web := WebInit(conf, ctrl)
 
 	//**************************************************
 	// running essential parts
@@ -141,6 +142,14 @@ func main() {
 		}()
 	}
 
+	if conf.Clients.Web.Address != "" {
+		go func() {
+			rhl.Printf("starting web interface")
+			web.Run()
+			rhl.Printf("web interface just stopped")
+		}()
+	}
+
 	//**************************************************
 	<-stop
 	rhl.Printf("at least one essential part has stopped - bringing down the whole process")
diff --git a/src/rhctl/web.go b/src/rhctl/web.go
new file mode 100644
index 0000000..b3b35d7
--- /dev/null
+++ b/src/rhctl/web.go
@@ -0,0 +1,73 @@
+//
+//  rhctl
+//
+//  Copyright (C) 2009-2016 Christian Pointner <equinox@helsinki.at>
+//
+//  This file is part of rhctl.
+//
+//  rhctl is free software: you can redistribute it and/or modify
+//  it under the terms of the GNU General Public License as published by
+//  the Free Software Foundation, either version 3 of the License, or
+//  any later version.
+//
+//  rhctl is distributed in the hope that it will be useful,
+//  but WITHOUT ANY WARRANTY; without even the implied warranty of
+//  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+//  GNU General Public License for more details.
+//
+//  You should have received a copy of the GNU General Public License
+//  along with rhctl. If not, see <http://www.gnu.org/licenses/>.
+//
+
+package main
+
+import (
+	"encoding/json"
+	"net/http"
+	"time"
+)
+
+type WebInterface struct {
+	server *http.Server
+}
+
+type webHandler struct {
+	ctrl *SwitchControl
+	H    func(*SwitchControl, http.ResponseWriter, *http.Request)
+}
+
+func (self webHandler) ServeHTTP(w http.ResponseWriter, r *http.Request) {
+	self.H(self.ctrl, w, r)
+}
+
+func webSendResponse(w http.ResponseWriter, status int, respdata interface{}) {
+	w.Header().Set("Content-Type", "application/json")
+	w.WriteHeader(status)
+	encoder := json.NewEncoder(w)
+	encoder.Encode(respdata)
+}
+
+func webPingHandler(ctrl *SwitchControl, w http.ResponseWriter, r *http.Request) {
+	webSendResponse(w, http.StatusOK, "pong")
+}
+
+func (web *WebInterface) Run() {
+	rhdl.Printf("Web: handler running...")
+	if err := web.server.ListenAndServe(); err != nil {
+		rhl.Printf("Web: server returned: %s", err)
+	}
+}
+
+func WebInit(conf *Config, ctrl *SwitchControl) (web *WebInterface) {
+	web = &WebInterface{}
+
+	if conf.Clients.Web.StaticDir != "" {
+		rhdl.Printf("Web: will serving static files from '%s'", conf.Clients.Web.StaticDir)
+		http.Handle("/static/", http.StripPrefix("/static/", http.FileServer(http.Dir(conf.Clients.Web.StaticDir))))
+	}
+	http.Handle("/ping", webHandler{ctrl, webPingHandler})
+	// TODO: add other handler
+
+	web.server = &http.Server{Addr: conf.Clients.Web.Address, ReadTimeout: 2 * time.Hour, WriteTimeout: 2 * time.Hour}
+	return
+}
diff --git a/web-static/index.html b/web-static/index.html
new file mode 100644
index 0000000..79b83cb
--- /dev/null
+++ b/web-static/index.html
@@ -0,0 +1,8 @@
+<html>
+  <head>
+    <title>rhctl web interface</title>
+  </head>
+  <body>
+    <h1>Hello world</h1>
+  </body>
+</html>
-- 
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