update

.drone.yml

@@ -0,0 +1,20 @@
+kind: pipeline
+name: default
+steps:
+- name: build
+  image: golang:1.17.2
+  commands:
+    - git tag $DRONE_TAG
+    - bash make.sh
+    - echo -n "latest,${DRONE_TAG#v}" > .tags
+- name: gitea_release
+  image: plugins/gitea-release
+  settings:
+    api_key:
+      from_secret: gitea_api_key
+    base_url: https://kumoly.io
+    files: dist/*
+    checksum:
+      - sha256
+trigger:
+  event: tag

.gitignore

@@ -1,2 +1,3 @@
 node_modules
 .parcel-cache
+dist

README.md

@@ -1 +1,28 @@
-# goshell
+# gterm
+
+
+## Usage
+
+```shell
+Usage: gterm [options]
+  -addr string
+        address to bind (default ":8000")
+  -allow string
+        restrict ip
+  -dev
+        is development mode
+  -log-level int
+        log level (default 9)
+  -name string
+        the application title (default "gterm")
+  -shell string
+        the shell behind (default "bash")
+  -v    show version
+```
+
+## Install
+
+```shell
+sudo rm -f /usr/local/bin/gterm
+sudo sh -c "curl -fsSL RELEASE_URL | tar -C /usr/local/bin/ -xz"
+```

cmd/gterm/main.go

@@ -2,27 +2,78 @@ package main
 
 import (
 	"flag"
+	"fmt"
+	"net/http"
+	"os"
 
+	"kumoly.io/lib/klog"
 	"kumoly.io/lib/ksrv"
 	"kumoly.io/tools/gterm"
 )
 
+var Version = "0.0.0"
+var Build = "alpha"
+
 var (
+	flagAllowIP  string
 	flagAppName  string = "gterm"
 	flagAddr     string
 	flagShell    string
+	flagLogLevel int
+	flagDev      bool
+	flagVer      bool
 )
 
 func init() {
+	flag.StringVar(&flagAppName, "name", "gterm", "the application title")
 	flag.StringVar(&flagAddr, "addr", ":8000", "address to bind")
 	flag.StringVar(&flagShell, "shell", "bash", "the shell behind")
+	flag.BoolVar(&flagDev, "dev", false, "is development mode")
+	flag.IntVar(&flagLogLevel, "log-level", 9, "log level")
+	flag.StringVar(&flagAllowIP, "allow", "", "restrict ip")
+	flag.BoolVar(&flagVer, "v", false, "show version")
+
+	flag.Usage = func() {
+		fmt.Fprintf(os.Stderr, "Usage: gterm [options]\n")
+		flag.PrintDefaults()
+	}
 }
 
 func main() {
 	flag.Parse()
+	if flagVer {
+		fmt.Printf("%v - %v\n", Version, Build)
+		return
+	}
+
+	klog.LEVEL = klog.Llevel(flagLogLevel)
+	klog.PROD = !flagDev
 
-	server := ksrv.New()
 	g := gterm.New()
+	g.AppName = flagAppName
+	g.Cmd = flagShell
 
-	server.Handle(g).Listen(flagAddr).Serve()
+	server := &http.Server{
+		Addr:    flagAddr,
+		Handler: Middleware(g),
+	}
+	server.ListenAndServe()
+}
+
+func Middleware(next http.Handler) http.Handler {
+	log := klog.Sub(flagAppName)
+	return http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
+		defer func() {
+			if err := recover(); err != nil {
+				log.Error(err)
+			}
+		}()
+		if flagAllowIP != "" {
+			if !ksrv.MatchIPGlob(ksrv.GetIP(r), flagAllowIP) {
+				w.WriteHeader(http.StatusForbidden)
+				w.Write([]byte("permission denied"))
+			}
+		}
+		next.ServeHTTP(w, r)
+	})
 }

go.mod

@@ -5,7 +5,6 @@ go 1.17
 require (
 	github.com/creack/pty v1.1.17
 	github.com/gorilla/websocket v1.4.2
-	github.com/rs/xid v1.3.0
 	kumoly.io/lib/klog v0.0.8
 	kumoly.io/lib/ksrv v0.0.2-0.20211112060911-0d61b343a298
 )

go.sum

@@ -4,8 +4,6 @@ github.com/gorilla/websocket v1.4.2 h1:+/TMaTYc4QFitKJxsQ7Yye35DkWvkdLcvGKqM+x0U
 github.com/gorilla/websocket v1.4.2/go.mod h1:YR8l580nyteQvAITg2hZ9XVh4b55+EU/adAjf1fMHhE=
 github.com/mattn/go-isatty v0.0.14 h1:yVuAays6BHfxijgZPzw+3Zlu5yQgKGP2/hcQbHb7S9Y=
 github.com/mattn/go-isatty v0.0.14/go.mod h1:7GGIvUiUoEMVVmxf/4nioHXj79iQHKdU27kJ6hsGG94=
-github.com/rs/xid v1.3.0 h1:6NjYksEUlhurdVehpc7S7dk6DAmcKv8V9gG0FsVN2U4=
-github.com/rs/xid v1.3.0/go.mod h1:trrq9SKmegXys3aeAKXMUTdJsYXVwGY3RLcfgqegfbg=
 golang.org/x/sys v0.0.0-20210630005230-0f9fa26af87c/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
 golang.org/x/sys v0.0.0-20211103235746-7861aae1554b h1:1VkfZQv42XQlA/jchYumAnv1UPo6RgF9rJFkTgZIxO4=
 golang.org/x/sys v0.0.0-20211103235746-7861aae1554b/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=

gterm.go

@@ -14,14 +14,13 @@ import (
 
 	"github.com/creack/pty"
 	"github.com/gorilla/websocket"
-	"github.com/rs/xid"
 	"kumoly.io/lib/klog"
 	"kumoly.io/lib/ksrv"
 	"kumoly.io/lib/ksrv/engine"
 	"kumoly.io/tools/gterm/public"
 )
 
-//go:embed index.html
+//go:embed public/index.html
 var index string
 
 var tmpl *engine.Engine
@@ -68,10 +67,23 @@ func New() *GTerm {
 	// if g.BufferSize == 0 {
 	// 	g.BufferSize = 512
 	// }
+	go func() {
+		//print pool
+		log := klog.Sub("gterm")
+		for {
+			cons := []string{}
+			for k := range pool {
+				cons = append(cons, k)
+			}
+			log.Info("current connections: ", cons)
+			time.Sleep(5 * time.Minute)
+		}
+
+	}()
 	return &GTerm{
 		AppName:    "GTERM",
 		Cmd:        "bash",
-		Envs:       os.Environ(),
+		Envs:       append(os.Environ(), "TERM=xterm-256color"),
 		Timeout:    20 * time.Second,
 		ErrorLimit: 10,
 		BufferSize: 512,
@@ -111,7 +123,7 @@ func (g *GTerm) App(w http.ResponseWriter, r *http.Request) {
 }
 
 func (g *GTerm) WS(w http.ResponseWriter, r *http.Request) {
-	id := ksrv.GetIP(r) + " : " + xid.New().String()
+	id := fmt.Sprintf("[%02d] %s", ctr(), ksrv.GetIP(r))
 	pool[id] = make(chan struct{}, 1)
 	defer func() {
 		close(pool[id])
@@ -226,7 +238,7 @@ func (g *GTerm) WS(w http.ResponseWriter, r *http.Request) {
 			if !ok {
 				dataType = "uunknown"
 			}
-			l.Info(fmt.Sprintf("received %s (type: %v) message of size %v byte(s) from xterm.js with key sequence: %v", dataType, messageType, dataLength, dataBuffer))
+			l.Debug(fmt.Sprintf("received %s (type: %v) message of size %v byte(s) from xterm.js with key sequence: %v", dataType, messageType, dataLength, dataBuffer))
 
 			// process
 			if dataLength == -1 { // invalid
@@ -243,7 +255,7 @@ func (g *GTerm) WS(w http.ResponseWriter, r *http.Request) {
 						l.Warn(fmt.Sprintf("failed to unmarshal received resize message '%s': %s", string(resizeMessage), err))
 						continue
 					}
-					l.InfoF(klog.H{"rows": ttySize.Rows, "columns": ttySize.Cols}, "resizing tty...")
+					l.DebugF(klog.H{"rows": ttySize.Rows, "columns": ttySize.Cols}, "resizing tty...")
 					if err := pty.Setsize(tty, &pty.Winsize{
 						Rows: ttySize.Rows,
 						Cols: ttySize.Cols,

index.html

@@ -41,7 +41,7 @@
 
 <body>
   <div id="terminal"></div>
-  <script src="./main.js"></script>
+  <script  type="module"  src="./main.js"></script>
 </body>
 
 </html>

main.js

@@ -7,7 +7,7 @@ import { WebLinksAddon } from 'xterm-addon-web-links';
 import 'xterm/css/xterm.css'
 
 (function() {
-    var terminal = new Terminal({
+    const terminal = new Terminal({
       screenKeys: true,
       useStyle: true,
       cursorBlink: true,
@@ -16,19 +16,20 @@ import 'xterm/css/xterm.css'
       screenReaderMode: true,
       cols: 128,
     });
-    terminal.open(document.getElementById("terminal"));
+    const fitAddon = new FitAddon();
+    terminal.loadAddon(fitAddon);
     var protocol = (location.protocol === "https:") ? "wss://" : "ws://";
     var url = protocol + location.host + "/ws"
-    var ws = new WebSocket(url);
+    const ws = new WebSocket(url);
-    var attachAddon = new AttachAddon.AttachAddon(ws);
+    const attachAddon = new AttachAddon(ws);
-    var fitAddon = new FitAddon.FitAddon();
+    const webLinksAddon = new WebLinksAddon();
-    terminal.loadAddon(fitAddon);
-    var webLinksAddon = new WebLinksAddon.WebLinksAddon();
     terminal.loadAddon(webLinksAddon);
-    var unicode11Addon = new Unicode11Addon.Unicode11Addon();
+    const unicode11Addon = new Unicode11Addon();
     terminal.loadAddon(unicode11Addon);
-    var serializeAddon = new SerializeAddon.SerializeAddon();
+    const serializeAddon = new SerializeAddon();
     terminal.loadAddon(serializeAddon);
+    terminal.open(document.getElementById("terminal"));
+    fitAddon.fit();
     ws.onclose = function(event) {
       console.log(event);
       terminal.write('\r\n\nconnection has been terminated from the server-side (hit refresh to restart)\n')
@@ -50,6 +51,7 @@ import 'xterm/css/xterm.css'
         console.log(event);
       });
       window.onresize = function() {
+        console.log("resize")
         fitAddon.fit();
       };
     };

make.sh

@@ -0,0 +1,29 @@
+VERSION=$(git describe --tags --abbrev=0)
+if [ $? -ne 0 ]; then VERSION=$DRONE_TAG; fi
+BUILD=$(git rev-parse --short HEAD)
+if [ $? -ne 0 ]; then BUILD=${DRONE_COMMIT:0:7}; fi
+
+PROJ=gterm
+DIST=dist
+
+LDFLAGS="-ldflags \"-X main.Version=${VERSION} -X main.Build=${BUILD} -w -s\""
+FAILURES=""
+
+PLATFORMS="darwin/amd64 darwin/arm64"
+PLATFORMS="$PLATFORMS linux/amd64"
+
+for PLATFORM in $PLATFORMS; do
+  GOOS=${PLATFORM%/*}
+  GOARCH=${PLATFORM#*/}
+  BIN_FILENAME="${PROJ}"
+  CMD="GOOS=${GOOS} GOARCH=${GOARCH} go build ${LDFLAGS} -o ${DIST}/${BIN_FILENAME} cmd/gterm/main.go"
+  echo "${CMD}"
+  eval $CMD || FAILURES="${FAILURES} ${PLATFORM}"
+  sh -c "cd ${DIST} && tar -czf ${PROJ}-${VERSION}-${GOOS}-${GOARCH}.tar.gz ${BIN_FILENAME} && rm ${BIN_FILENAME}"
+done
+
+if [[ "${FAILURES}" != "" ]]; then
+  echo ""
+  echo "${SCRIPT_NAME} failed on: ${FAILURES}"
+  exit 1
+fi

package.json

@@ -1,10 +1,12 @@
 {
   "name": "gterm",
   "version": "1.0.0",
-  "main": "index.js",
   "repository": "git@kumoly.io:tools/gterm.git",
   "author": "Evan Chen <evanchen@kumoly.io>",
   "license": "MIT",
+  "scripts": {
+    "build":"rm public/*.js public/*.css && yarn parcel build index.html"
+  },
   "dependencies": {
     "parcel": "^2.0.1",
     "xterm": "^4.15.0",
@@ -13,5 +15,12 @@
     "xterm-addon-serialize": "^0.6.1",
     "xterm-addon-unicode11": "^0.3.0",
     "xterm-addon-web-links": "^0.4.0"
+  },
+  "targets":{
+    "default":{
+      "distDir":"public",
+      "publicUrl":"./",
+      "sourceMap": false
+    }
   }
 }

public/fs.go

@@ -2,5 +2,5 @@ package public
 
 import "embed"
 
-//go:embed js favicon.ico
+//go:embed *
 var FS embed.FS

public/index.6999253a.css

@@ -0,0 +1 @@
+.xterm{position:relative;user-select:none;-ms-user-select:none;-webkit-user-select:none}.xterm.focus,.xterm:focus{outline:none}.xterm .xterm-helpers{position:absolute;top:0;z-index:5}.xterm .xterm-helper-textarea{border:0;height:0;left:-9999em;margin:0;opacity:0;overflow:hidden;padding:0;position:absolute;resize:none;top:0;white-space:nowrap;width:0;z-index:-5}.xterm .composition-view{background:#000;color:#fff;display:none;position:absolute;white-space:nowrap;z-index:1}.xterm .composition-view.active{display:block}.xterm .xterm-viewport{background-color:#000;bottom:0;cursor:default;left:0;overflow-y:scroll;position:absolute;right:0;top:0}.xterm .xterm-screen{position:relative}.xterm .xterm-screen canvas{left:0;position:absolute;top:0}.xterm .xterm-scroll-area{visibility:hidden}.xterm-char-measure-element{display:inline-block;left:-9999em;line-height:normal;position:absolute;top:0;visibility:hidden}.xterm{cursor:text}.xterm.enable-mouse-events{cursor:default}.xterm.xterm-cursor-pointer{cursor:pointer}.xterm.column-select.focus{cursor:crosshair}.xterm .xterm-accessibility,.xterm .xterm-message{bottom:0;color:transparent;left:0;position:absolute;right:0;top:0;z-index:10}.xterm .live-region{height:1px;left:-9999px;overflow:hidden;position:absolute;width:1px}.xterm-dim{opacity:.5}.xterm-underline{text-decoration:underline}.xterm-strikethrough{text-decoration:line-through}

public/index.html

@@ -0,0 +1 @@
+<!DOCTYPE html><html><head><link rel="stylesheet" href="index.6999253a.css"><title>{{.AppName}}</title><style>body::-webkit-scrollbar,div::-webkit-scrollbar,html::-webkit-scrollbar{display:none;width:0}body,html{margin:0;overflow:hidden;padding:0}div#terminal{height:100%;left:0;position:absolute;top:0;width:100%}div#terminal div{height:100%}.xterm-screen,.xterm-viewport{height:100%;margin:0;padding:0}</style></head><body> <div id="terminal"></div> <script type="module" src="index.434ad47d.js"></script> </body></html>

util.go

@@ -1 +1,13 @@
 package gterm
+
+import "sync"
+
+var curCtr = 0
+var ctrLck sync.Mutex
+
+func ctr() int {
+	ctrLck.Lock()
+	defer ctrLck.Unlock()
+	curCtr++
+	return curCtr
+}