Show command and hostname in windows title

Godeps/Godeps.json

@@ -12,6 +12,14 @@
 			"Rev": "d5cac425555ca5cf00694df246e04f05e6a55150"
 		},
 		{
+			"ImportPath": "github.com/gorilla/context",
+			"Rev": "1c83b3eabd45b6d76072b66b746c20815fb2872d"
+		},
+		{
+			"ImportPath": "github.com/gorilla/mux",
+			"Rev": "ee1815431e497d3850809578c93ab6705f1a19f7"
+		},
+		{
 			"ImportPath": "github.com/gorilla/websocket",
 			"Rev": "b6ab76f1fe9803ee1d59e7e5b2a797c1fe897ce5"
 		},

Makefile

 gotty: app/resource.go main.go app/*.go
 	go build
 
-resource: app/resource.go
+resource:  app/resource.go
 
-app/resource.go: bindata/hterm.js bindata/index.html bindata/gotty.js
-	go-bindata -pkg app -ignore=\\.gitkeep -o app/resource.go bindata/
+app/resource.go: bindata/static/hterm.js bindata/static/gotty.js  bindata/templates/index.html
+	go-bindata -prefix bindata -pkg app -ignore=\\.gitkeep -o app/resource.go bindata/...
 	gofmt -w app/resource.go
 
 bindata:
 	mkdir bindata
 
-bindata/hterm.js: bindata libapps/hterm/js/*.js
+bindata/static: bindata
+	mkdir bindata/static
+
+bindata/templates: bindata
+	mkdir bindata/templates
+
+bindata/static/hterm.js: bindata/static libapps/hterm/js/*.js
 	cd libapps && \
-	LIBDOT_SEARCH_PATH=`pwd` ./libdot/bin/concat.sh -i ./hterm/concat/hterm_all.concat -o ../bindata/hterm.js
+	LIBDOT_SEARCH_PATH=`pwd` ./libdot/bin/concat.sh -i ./hterm/concat/hterm_all.concat -o ../bindata/static/hterm.js
 
-bindata/index.html: bindata resources/index.html
-	cp resources/index.html bindata/index.html
+bindata/static/gotty.js: bindata/static resources/gotty.js
+	cp resources/gotty.js bindata/static/gotty.js
 
-bindata/gotty.js: bindata resources/gotty.js
-	cp resources/gotty.js bindata/gotty.js
+bindata/templates/index.html: bindata/templates resources/index.html
+	cp resources/index.html bindata/templates/index.html

app/app.go

 package app
 
 import (
+	"bytes"
 	"crypto/rand"
 	"encoding/base64"
+	htemplate "html/template"
 	"log"
 	"math/big"
+	"net"
 	"net/http"
+	"os"
 	"os/exec"
 	"strconv"
 	"strings"
+	ttemplate "text/template"
 
 	"github.com/elazarl/go-bindata-assetfs"
 	"github.com/gorilla/websocket"
 	"github.com/kr/pty"
-	"net"
 )
 
 type App struct {
@@ -28,6 +32,7 @@ type Options struct {
 	PermitWrite bool
 	Credential  string
 	RandomUrl   bool
+	TitleFormat string
 	Command     []string
 }
 
@@ -44,21 +49,23 @@ func New(options Options) *App {
 }
 
 func (app *App) Run() error {
-	path := "/"
+	path := ""
 	if app.options.RandomUrl {
-		path += generateRandomString(8)
+		path += "/" + generateRandomString(8)
 	}
 
 	endpoint := app.options.Address + ":" + app.options.Port
 
+	indexHandler := http.HandlerFunc(app.handleIndex)
+	wsHandler := http.HandlerFunc(app.handleWS)
 	staticHandler := http.FileServer(
-		&assetfs.AssetFS{Asset: Asset, AssetDir: AssetDir, Prefix: "bindata"},
+		&assetfs.AssetFS{Asset: Asset, AssetDir: AssetDir, Prefix: "static"},
 	)
-	wsHandler := http.HandlerFunc(app.handleWS)
 
 	var siteMux = http.NewServeMux()
-	siteMux.Handle(path, staticHandler)
-	siteMux.Handle(path+"ws", wsHandler)
+	siteMux.Handle(path+"/", indexHandler)
+	siteMux.Handle(path+"/static/", http.StripPrefix(path+"/static/", staticHandler))
+	siteMux.Handle(path+"/ws", wsHandler)
 
 	siteHandler := http.Handler(siteMux)
 
@@ -74,10 +81,10 @@ func (app *App) Run() error {
 		strings.Join(app.options.Command, " "),
 	)
 	if app.options.Address != "" {
-		log.Printf("URL: %s", "http://"+endpoint+path)
+		log.Printf("URL: %s", "http://"+endpoint+path+"/")
 	} else {
 		for _, address := range listAddresses() {
-			log.Printf("URL: %s", "http://"+address+":"+app.options.Port+path)
+			log.Printf("URL: %s", "http://"+address+":"+app.options.Port+path+"/")
 		}
 	}
 	if err := http.ListenAndServe(endpoint, siteHandler); err != nil {
@@ -87,6 +94,36 @@ func (app *App) Run() error {
 	return nil
 }
 
+type TitleVars struct {
+	Command  string
+	Hostname string
+}
+
+type IndexVars struct {
+	Title string
+}
+
+func (app *App) handleIndex(w http.ResponseWriter, r *http.Request) {
+	title := make([]byte, 0)
+	titleBuf := bytes.NewBuffer(title)
+	hostname, _ := os.Hostname()
+	titleVars := TitleVars{
+		Command:  strings.Join(app.options.Command, " "),
+		Hostname: hostname,
+	}
+	titleTmpl, _ := ttemplate.New("title").Parse(app.options.TitleFormat)
+	titleTmpl.Execute(titleBuf, titleVars)
+
+	data, _ := Asset("templates/index.html")
+	tmpl, _ := htemplate.New("index").Parse(string(data))
+
+	vars := IndexVars{
+		Title: titleBuf.String(),
+	}
+
+	tmpl.Execute(w, vars)
+}
+
 func (app *App) handleWS(w http.ResponseWriter, r *http.Request) {
 	log.Printf("New client connected: %s", r.RemoteAddr)
 

main.go

@@ -43,6 +43,12 @@ func main() {
 			Usage:  "Add a random string to the URL",
 			EnvVar: "GOTTY_RANDOM_URL",
 		},
+		cli.StringFlag{
+			Name:   "title-format",
+			Value:  "GoTTY - {{ .Command }} ({{ .Hostname }})",
+			Usage:  "Title format of browser window",
+			EnvVar: "GOTTY_title-format",
+		},
 	}
 	cmd.Action = func(c *cli.Context) {
 		if len(c.Args()) == 0 {
@@ -57,6 +63,7 @@ func main() {
 				c.Bool("permit-write"),
 				c.String("credential"),
 				c.Bool("random-url"),
+				c.String("title-format"),
 				c.Args(),
 			},
 		)

resources/index.html

 <!doctype html>
 <html>
   <head>
-    <title>GoTTY</title>
+    <title>{{ .Title }}</title>
     <style>body {position: absolute; height: 100%; width: 100%; margin: 0px;}</style>
   </head>
   <body>
-    <script src="hterm.js"></script>
-    <script src="gotty.js"></script>
+    <script src="static/hterm.js"></script>
+    <script src="static/gotty.js"></script>
   </body>
 </html>