build: set build version in binary at build time

.hgtags

@@ -1,3 +1,5 @@
 769fad81e3f8db8f7e5f5c164656a382a169d735 release-1.0.0
 9ed95938d809a8226aca529e34b655e6d8c8c379 release-1.0.1
 46fe533682419c8a519836ac95b5575053aa0fa8 release-1.0.2
+a2c92b262f339f82eb01c8d92dda252a27432255 release-1.1.0
+d14041daa7bbbd37ea2ff47aa978b9595af67ca3 release-1.1.1

Config.go

@@ -8,7 +8,6 @@ type Config struct {
 	Web struct {
 		Port          int    `json:"port"`
 		BindTo        string `json:"bind_to"`
-		Extern        string `json:"extern"`
 		Title         string `json:"title"`
 		CustomFavicon bool   `json:"custom_favicon"`
 

_dist/README.txt

@@ -8,10 +8,20 @@ Tags: nmdc
 
 =UPGRADING FROM DCWEBUI2=
 
-- The configuration file format is identical, but please now ensure it's valid json instead of just a .js file. This means no assignment, use double-quoted strings, and no comments.
+- The configuration file content is identical between nmdc-webfrontend 1.0.0 and dcwebui2 1.3.0, but please now ensure it's valid JSON instead of arbitrary javascript. This means no assignment, use double-quoted strings, and no comments.
+- Future changes to the configuration file since nmdc-webfrontend 1.0.0 are backward compatible (see the changelog for more details).
 
 =CHANGELOG=
 
+2017-02-06 1.1.2
+- Autodetect 'extern', no need to include it in config files
+- Enhancement: Remove redundant request, for a faster page load
+- Display server version number in log file and in response headers
+- Fix a cosmetic issue with spacing around user count in page title
+
+2017-02-06 1.1.1
+- Fix an issue with malformed content in minified build
+
 2017-02-06 1.1.0
 - Feature: Remember last username/password for login; remember last "show joins/parts" status
 - Feature: Display user details on hover (description, email, client tag, share size)

build.sh

@@ -88,7 +88,7 @@ single_build() {
 	# GOARCH/GOOS supplied in function env
 	go build \
 		-a \
-		-ldflags '-s -w' \
+		-ldflags "-s -w -X main.VERSION=nmdc-webfrontend/${version}" \
 		-gcflags "-trimpath=${GOPATH}" \
 		-asmflags "-trimpath=${GOPATH}" \
 		-o "$(pathfix "${tmpdir}/${local_bin_name}")"

client/dcwebui.js

@@ -5,6 +5,7 @@
 
 var SENTINEL_PASSWORD = "************";
 var CHAT_SCROLLBACK_LIMIT = 50; // Once over 2x $limit, the first $limit will be trimmed off the list
+var EXTERN_ROOT = window.location.protocol + "//" + window.location.host + "/";
 
 var $ = (document.querySelectorAll ? 
 	function(s) {
@@ -155,7 +156,7 @@ var notify = function(title, body) {
 		case "granted": {
 			new Notification(title, {
 				body: body,
-				icon: DCWEBUI_CONF.extern + "/favicon.ico"
+				icon: EXTERN_ROOT + "/favicon.ico"
 			});
 		} break;
 		
@@ -779,13 +780,13 @@ var updateTitle = function() {
 		prefix = "[NEW PM] "
 	}
 	
-	document.title = prefix + hub_hubname + "("+userlist.count()+") "
+	document.title = prefix + hub_hubname + " ("+userlist.count()+")"
 };
 
 var sock = {};
 var hub_state     = 0; // [disconnected, sent-nick, connected]
 var hub_last_nick = '';
-var hub_hubname   = DCWEBUI_CONF.title;
+var hub_hubname   = "Loading...";
 
 var pm_tabs = {}; // nick => tabid
 var next_tabid = 1;
@@ -917,7 +918,8 @@ var transition = function(new_state) {
 			$("#chatbox").disabled = true;
 		} break;
 		
-		case STATE_ACTIVE: {
+		case STATE_ACTIVE: {			
+			write("tab-main").system("Now talking on "+hub_hubname);
 			$("#chatbox").disabled = false;
 			$("#chatbox").spellcheck = true;
 		} break;
@@ -940,7 +942,7 @@ window.onload = function() {
 	
 	show_joins = persistence_get("show_joins", false);
 	
-	document.title = DCWEBUI_CONF.title;
+	document.title = hub_hubname; // "Loading...";
 	
 	// HTML event handlers
 	
@@ -1039,7 +1041,7 @@ window.onload = function() {
 	
 	// Socket event handlers
 	
-	sock = io.connect(DCWEBUI_CONF.extern);
+	sock = io.connect(EXTERN_ROOT);
 	sock.on('cls', function() {
 		transition(STATE_READY_FOR_LOGIN);
 		
@@ -1062,7 +1064,6 @@ window.onload = function() {
 		}
 	});
 	sock.on('hubname', function(s) {
-		write("tab-main").system("Now talking on "+s);
 		hub_hubname = s;
 		updateTitle();
 	});

client/index.htm

@@ -53,7 +53,6 @@
 		</div>
 		
 		<script type="text/javascript" src="/socket.io-1.7.2.js"></script>
-		<script type="text/javascript" src="/conf"></script>
 		<script type="text/javascript" src="/dcwebui.js"></script>
 	</body>
 </html>

clientpack.php

@@ -30,21 +30,18 @@ if (is_dir('clientpack')) {
 
 // Embed css into HTML file
 
-$css_file = file_get_contents('clientpack/dcwebui.min.css');
-
 $html_content = file_get_contents('clientpack/index.htm');
-$html_content = preg_replace('~<link[^>]+dcwebui.css[^>]*>~', '<style type="text/css">'.$css_file.'</style>', $html_content);
+
+$html_content = preg_replace_callback('~<link[^>]+dcwebui.css[^>]*>~', function() { return '<style type="text/css">'.file_get_contents('clientpack/dcwebui.min.css').'</style>'; }, $html_content);
 
 // Embed JS into HTML file
 
-$js_file = file_get_contents('clientpack/dcwebui.min.js');
-$html_content = preg_replace('~<script[^>]+dcwebui.js[^>]*>~', '<script type="text/javascript">'.$js_file.'</script>', $html_content);
+$html_content = preg_replace_callback('~<script[^>]+dcwebui.js[^>]*>~', function() { return '<script type="text/javascript">'.file_get_contents('clientpack/dcwebui.min.js').'</script>'; }, $html_content);
 
 // Embed socketio into HTML file
 
-$SIO_NAME = 'socket.io-1.7.2.js';
-$sio_file = file_get_contents('clientpack/'.$SIO_NAME);
-$html_content = preg_replace('~<script[^>]+'.$SIO_NAME.'[^>]*>~', '<script type="text/javascript">'.$sio_file.'</script>', $html_content);
+define('SIO_NAME', 'socket.io-1.7.2.js');
+$html_content = preg_replace_callback('~<script[^>]+'.SIO_NAME.'[^>]*>~', function() { return '<script type="text/javascript">'.file_get_contents('clientpack/'.SIO_NAME).'</script>'; }, $html_content);
 
 // Minify the combined file
 
@@ -55,5 +52,5 @@ file_put_contents('clientpack/index.htm', $html_content);
 // Clean up files
 
 `rm clientpack/{index.htm,dcwebui{.min,}.js,dcwebui{.min,}.css}`;
-unlink('clientpack/'.$SIO_NAME);
+unlink('clientpack/'.SIO_NAME);
 rename('clientpack/index.min.htm', 'clientpack/index.htm');

main.go

@@ -12,6 +12,8 @@ import (
 	"github.com/googollee/go-socket.io"
 )
 
+var VERSION string = `nmdc-webfrontend/devel-unreleased`
+
 type App struct {
 	cfg *Config
 }
@@ -164,6 +166,7 @@ func (this *App) SocketIOServer(so socketio.Socket) {
 	log.Printf("[%s] Client connected", so.Id())
 
 	so.Emit("cls")
+	so.Emit("hubname", this.cfg.Web.Title)
 	so.Emit("raw", this.cfg.App.MotdHTML+"<br>")
 	so.Emit("sys", "Enter a name to connect as (or name:pass for a registered nick)")
 
@@ -185,24 +188,6 @@ func (this *App) customFaviconHandler(w http.ResponseWriter, r *http.Request) {
 	http.ServeFile(w, r, "favicon.ico")
 }
 
-func (this *App) ConfigRequestHandler(w http.ResponseWriter, r *http.Request) {
-
-	confStruct := struct {
-		Extern string `json:"extern"`
-		Title  string `json:"title"`
-	}{
-		Extern: this.cfg.Web.Extern,
-		Title:  this.cfg.Web.Title,
-	}
-	confBytes, _ := json.Marshal(confStruct)
-
-	//
-
-	w.Header().Set("Content-Type", "text/javascript")
-	w.WriteHeader(200)
-	fmt.Fprintf(w, "var DCWEBUI_CONF = %s;\n", string(confBytes))
-}
-
 func (this *App) StaticRequestHandler(w http.ResponseWriter, r *http.Request) {
 	fileName := r.URL.Path[1:]
 	if fileName == "" {
@@ -241,6 +226,9 @@ func (this *App) StaticRequestHandler(w http.ResponseWriter, r *http.Request) {
 
 func (this *App) RunServer() {
 
+	// Inner mux {{
+	innerMux := http.NewServeMux()
+
 	// Socket.io handler
 	server, err := socketio.NewServer(nil)
 	if err != nil {
@@ -250,30 +238,39 @@ func (this *App) RunServer() {
 	server.On("error", func(so socketio.Socket, err error) {
 		log.Println("error:", err)
 	})
-	http.Handle("/socket.io/", server)
-
-	// Configuration handler
-	http.HandleFunc("/conf", this.ConfigRequestHandler)
+	innerMux.Handle("/socket.io/", server)
 
+	// Custom favicon handler
 	if this.cfg.Web.CustomFavicon {
-		http.HandleFunc("/favicon.ico", this.customFaviconHandler)
+		innerMux.HandleFunc("/favicon.ico", this.customFaviconHandler)
 	}
 
-	// Other files: asset handler
+	// Asset handler
 	if this.cfg.Web.ExternalWebroot {
-		http.Handle("/", http.FileServer(http.Dir("client")))
+		innerMux.Handle("/", http.FileServer(http.Dir("client")))
 	} else {
-		http.HandleFunc("/", this.StaticRequestHandler)
+		innerMux.HandleFunc("/", this.StaticRequestHandler)
 	}
+	// }}
+
+	// Wrapper mux {{
+	outerMux := http.NewServeMux()
+	outerMux.HandleFunc("/", func(w http.ResponseWriter, r *http.Request) {
+		w.Header().Set("Server", VERSION)
+		innerMux.ServeHTTP(w, r)
+	})
+	// }}
 
 	// Listen and serve
 	bindAddr := fmt.Sprintf("%s:%d", this.cfg.Web.BindTo, this.cfg.Web.Port)
 	log.Printf("Serving at %s...", bindAddr)
-	log.Fatal(http.ListenAndServe(bindAddr, nil))
+	log.Fatal(http.ListenAndServe(bindAddr, outerMux))
 }
 
 func main() {
 
+	log.Println(VERSION)
+
 	a, err := NewApp("nmdc-webfrontend.conf")
 	if err != nil {
 		log.Fatal(err.Error())

nmdc-webfrontend.conf.SAMPLE

@@ -1,21 +1,20 @@
 {
 	
 	"app": {
-		"motd"   : "Welcome!<br>"
+		"motd": "Welcome!<br>"
 	},
 	
 	"web": {
-		"port"   : 8082,
+		"port": 8082,
 		"bind_to": "127.0.0.1",
-		"extern" : "http://127.0.0.1:8082",
-		"title"  : "DCWebUI",
+		"title": "NMDC Web Frontend",
 		"custom_favicon": false
 	},
 	
 	"hub": {
 		"address": "127.0.0.1",
-		"port"   : 411,
-		"tag"    : "nmdc-webfrontend"
+		"port": 411,
+		"tag": "nmdc-webfrontend"
 	}
 	
 }