Move to xterm.js for CJK and IME support (#22)

.gitattributes

@@ -1 +1 @@
-index.html linguist-vendored
+src/index.html linguist-vendored

README.md

@@ -1,23 +1,23 @@
 # ttyd - Share your terminal over the web [![Build Status](https://travis-ci.org/tsl0922/ttyd.svg?branch=master)](https://travis-ci.org/tsl0922/ttyd)
 
-ttyd is a simple command-line tool for sharing terminal over the web, inspired by [GoTTY](https://github.com/yudai/gotty).
+ttyd is a simple command-line tool for sharing terminal over the web, inspired by [GoTTY][1].
 
 ![screenshot](screenshot.gif)
 
 # Features
 
-- Build on [libwebsockets](https://libwebsockets.org) with C for speed
-- Full terminal emulation based on [hterm](https://chromium.googlesource.com/apps/libapps/+/HEAD/hterm)
-- SSL support based on [OpenSSL](https://www.openssl.org)
+- Built on top of [Libwebsockets][2] with C for speed
+- Full terminal emulation based on [Xterm.js][3] with CJK and IME support
+- SSL support based on [OpenSSL][4]
 - Run any custom command with options
-- Basic authentication support
-- Cross platform: macOS, Linux, [OpenWrt](https://openwrt.org)/[LEDE](https://www.lede-project.org)
+- Basic authentication support and many other custom options
+- Cross platform: macOS, Linux, [OpenWrt][5]/[LEDE][6]
 
 # Installation
 
 ## Install on macOS
 
-Install with [homebrew](http://brew.sh):
+Install with [homebrew][7]:
 
 ```bash
 brew install ttyd
@@ -35,7 +35,7 @@ cmake ..
 make && make install
 ```
 
-> **NOTE:** You may need to compile libwebsockets from source for ubuntu versions old than 16.04, since they have outdated `libwebsockets-dev` package ([Issue #6](https://github.com/tsl0922/ttyd/issues/6)).
+> **NOTE:** You may need to compile libwebsockets from source for ubuntu versions old than 16.04, since they have outdated `libwebsockets-dev` package ([Issue #6][9]).
 
 ## Install on OpenWrt/LEDE
 
@@ -43,7 +43,7 @@ make && make install
 opkg install ttyd
 ```
 
-> **NOTE:** This may only works for [LEDE](https://www.lede-project.org) snapshots currently, if the install command fails, compile it yourself.
+> **NOTE:** This may only works for [LEDE][6] snapshots currently, if the install command fails, compile it yourself.
 
 # Usage
 
@@ -57,7 +57,7 @@ VERSION:
     1.1.0
 
 OPTIONS:
-    --port, -p              Port to listen (default: 7681)
+    --port, -p              Port to listen (default: 7681, use `0` for random port)
     --interface, -i         Network interface to bind
     --credential, -c        Credential for Basic Authentication (format: username:password)
     --uid, -u               User id to run with
@@ -88,5 +88,16 @@ Then open <http://localhost:7681>, now you can see and control the `bash` consol
 
 # Credits
 
-- [GoTTY](https://github.com/yudai/gotty): ttyd is a port of GoTTY to `C` language.
-- [hterm](https://chromium.googlesource.com/apps/libapps/+/HEAD/hterm): ttyd uses hterm to run a terminal emulator on the web.
+- [GoTTY][1]: ttyd is a port of GoTTY to `C` language.
+- [Libwebsockets][2]: used to build the websocket server.
+- [Xterm.js][3]: used to run the terminal emulator on the web, former: [hterm][8].
+
+  [1]: https://github.com/yudai/gotty
+  [2]: https://libwebsockets.org
+  [3]: https://github.com/sourcelair/xterm.js
+  [4]: https://www.openssl.org
+  [5]: https://openwrt.org
+  [6]: https://www.lede-project.org
+  [7]: http://brew.sh
+  [8]: https://chromium.googlesource.com/apps/libapps/+/HEAD/hterm
+  [9]: https://github.com/tsl0922/ttyd/issues/6

html/.gitignore

@@ -0,0 +1,47 @@
+# Logs
+logs
+*.log
+npm-debug.log*
+
+# Runtime data
+pids
+*.pid
+*.seed
+*.pid.lock
+
+# Directory for instrumented libs generated by jscoverage/JSCover
+lib-cov
+
+# Coverage directory used by tools like istanbul
+coverage
+
+# nyc test coverage
+.nyc_output
+
+# Grunt intermediate storage (http://gruntjs.com/creating-plugins#storing-task-files)
+.grunt
+
+# node-waf configuration
+.lock-wscript
+
+# Compiled binary addons (http://nodejs.org/api/addons.html)
+build/Release
+
+# Dependency directories
+node_modules
+jspm_packages
+
+# Optional npm cache directory
+.npm
+
+# Optional eslint cache
+.eslintcache
+
+# Optional REPL history
+.node_repl_history
+
+# Output of 'npm pack'
+*.tgz
+
+# Yarn Integrity file
+.yarn-integrity

html/README.md

@@ -0,0 +1,10 @@
+### Build the inlined html
+
+install [Yarn](https://yarnpkg.com), then run the following commands:
+
+```bash
+yarn
+yarn run build
+```
+
+this will compile the inlined html to `../src/index.html`.

html/css/app.css

@@ -0,0 +1,45 @@
+body, #terminal-container {
+	position: absolute;
+	height: 100%;
+	width: 100%;
+	margin: 0px;
+	font-size:15px;
+	font-variant-ligatures: none;
+	-webkit-font-smoothing: antialiased;
+	background-color: #101010;
+}
+
+.terminal {
+    background-color: #101010;
+    color: #f0f0f0;
+    font-family: "DejaVu Sans Mono","Everson Mono",FreeMono,Menlo,Terminal,monospace;
+    border: 0;
+    height: 100%;
+    width: 100%;
+}
+
+.terminal .xterm-viewport {
+    background-color: #101010;
+    overflow-x: hidden;
+}
+
+.terminal .terminal-cursor {
+    background-color: #f0f0f0;
+    color: #101010;
+    opacity: .7;
+}
+
+.terminal:not(.focus) .terminal-cursor {
+    outline: 1px solid #f0f0f0;
+}
+
+@keyframes blink-cursor {
+    0% {
+        background-color: #f0f0f0;
+        color: #101010;
+    }
+    50% {
+        background-color: transparent;
+        color: #f0f0f0;
+    }
+}

html/gulpfile.js

@@ -0,0 +1,10 @@
+var gulp = require('gulp'),
+    inlinesource = require('gulp-inline-source');
+
+gulp.task('inlinesource', function () {
+    return gulp.src('*.html')
+        .pipe(inlinesource())
+        .pipe(gulp.dest('../src'));
+});
+
+gulp.task('default', ['inlinesource']);

html/index.html

@@ -0,0 +1,19 @@
+<!DOCTYPE html>
+<html lang="en">
+<head>
+    <meta charset="UTF-8">
+    <meta http-equiv="X-UA-Compatible" content="IE=edge,chrome=1">
+    <title>ttyd - Terminal</title>
+    <link inline rel="icon" type="image/png" href="favicon.png">
+    <link inline href="node_modules/xterm/dist/xterm.css">
+    <link inline href="css/app.css">
+    <script inline src="node_modules/xterm/dist/xterm.js"></script>
+    <script inline src="node_modules/xterm/addons/fit/fit.js"></script>
+    <script inline src="js/overlay/overlay.js"></script>
+</head>
+<body>
+	<div id="terminal-container"></div>
+	<script src="auth_token.js"></script>
+	<script inline src="js/app.js"></script>
+</body>
+</html>

html/js/app.js

@@ -0,0 +1,109 @@
+(function() {
+    var terminalContainer = document.getElementById('terminal-container'),
+        httpsEnabled = window.location.protocol == "https:",
+        url = (httpsEnabled ? 'wss://' : 'ws://') + window.location.host + window.location.pathname + 'ws',
+        protocols = ["tty"],
+        autoReconnect = -1,
+        term, pingTimer;
+
+    var openWs = function() {
+        var ws = new WebSocket(url, protocols);
+
+        ws.onopen = function(event) {
+            if (typeof tty_auth_token !== 'undefined') {
+                ws.send(JSON.stringify({AuthToken: tty_auth_token}));
+            }
+            pingTimer = setInterval(sendPing, 30 * 1000, ws);
+
+            if (typeof term !== 'undefined') {
+                term.destroy();
+            }
+
+            term = new Terminal();
+
+            term.on('resize', function (size) {
+                if (ws.readyState === WebSocket.OPEN) {
+                    ws.send("2" + JSON.stringify({columns: size.cols, rows: size.rows}));
+                }
+                setTimeout(function() {
+                    term.showOverlay(size.cols + 'x' + size.rows);
+                }, 500);
+            });
+            term.on("data", function(data) {
+                if (ws.readyState === WebSocket.OPEN) {
+                    ws.send("0" + data);
+                }
+            });
+            window.onresize = function(event) {
+                term.fit();
+            };
+
+            while (terminalContainer.firstChild) {
+                terminalContainer.removeChild(terminalContainer.firstChild);
+            }
+
+            term.open(terminalContainer);
+            term.fit();
+            term.focus();
+        };
+
+        ws.onmessage = function(event) {
+            var data = event.data.slice(1);
+            switch(event.data[0]) {
+                case '0':
+                    term.write(decodeURIComponent(escape(window.atob(data))));
+                    break;
+                case '1': // pong
+                    break;
+                case '2':
+                    document.title = data;
+                    break;
+                case '3':
+                    var preferences = JSON.parse(data);
+                    Object.keys(preferences).forEach(function(key) {
+                        console.log("Setting " + key + ": " +  preferences[key]);
+                        term.setOption(key, preferences[key]);
+                    });
+                    break;
+                case '4':
+                    autoReconnect = JSON.parse(data);
+                    console.log("Enabling reconnect: " + autoReconnect + " seconds")
+                    break;
+            }
+        };
+
+        ws.onclose = function(event) {
+            if (term) {
+                term.off('data');
+                term.off('resize');
+                term.showOverlay("Connection Closed", null);
+            }
+            clearInterval(pingTimer);
+            if (autoReconnect > 0) {
+                setTimeout(openWs, autoReconnect * 1000);
+            }
+        };
+
+        ws.onerror = function(event) {
+            var errorNode = document.createElement('div');
+            errorNode.style.cssText = [
+                "color: red",
+                "background-color: white",
+                "font-size: x-large",
+                "opacity: 0.75",
+                "text-align: center",
+                "margin: 1em",
+                "padding: 0.2em",
+                "border: 0.1em dotted #ccc"
+            ].join(";");
+            errorNode.textContent = "Websocket handshake failed!";
+            terminalContainer.insertBefore(errorNode, terminalContainer.firstChild);
+        };
+    };
+
+    var sendPing = function(ws) {
+        ws.send("1");
+    };
+
+    openWs();
+})()

html/js/overlay/overlay.js

@@ -0,0 +1,56 @@
+// ported from hterm.Terminal.prototype.showOverlay
+Terminal.prototype.showOverlay = function(msg, timeout) {
+    if (!this.overlayNode_) {
+        if (!this.element)
+            return;
+        this.overlayNode_ = document.createElement('div');
+        this.overlayNode_.style.cssText = (
+        'border-radius: 15px;' +
+        'font-size: xx-large;' +
+        'opacity: 0.75;' +
+        'padding: 0.2em 0.5em 0.2em 0.5em;' +
+        'position: absolute;' +
+        '-webkit-user-select: none;' +
+        '-webkit-transition: opacity 180ms ease-in;' +
+        '-moz-user-select: none;' +
+        '-moz-transition: opacity 180ms ease-in;');
+
+        this.overlayNode_.addEventListener('mousedown', function(e) {
+            e.preventDefault();
+            e.stopPropagation();
+        }, true);
+    }
+    this.overlayNode_.style.color = "#101010";
+    this.overlayNode_.style.backgroundColor = "#f0f0f0";
+
+    this.overlayNode_.textContent = msg;
+    this.overlayNode_.style.opacity = '0.75';
+
+    if (!this.overlayNode_.parentNode)
+        this.element.appendChild(this.overlayNode_);
+
+    var divSize = this.element.getBoundingClientRect();
+    var overlaySize = this.overlayNode_.getBoundingClientRect();
+
+    this.overlayNode_.style.top =
+        (divSize.height - overlaySize.height) / 2 + 'px';
+    this.overlayNode_.style.left = (divSize.width - overlaySize.width) / 2 + 'px';
+
+    var self = this;
+
+    if (this.overlayTimeout_)
+        clearTimeout(this.overlayTimeout_);
+
+    if (timeout === null)
+        return;
+
+    this.overlayTimeout_ = setTimeout(function() {
+        self.overlayNode_.style.opacity = '0';
+        self.overlayTimeout_ = setTimeout(function() {
+            if (self.overlayNode_.parentNode)
+                self.overlayNode_.parentNode.removeChild(self.overlayNode_);
+            self.overlayTimeout_ = null;
+            self.overlayNode_.style.opacity = '0.75';
+        }, 200);
+    }, timeout || 1500);
+};

html/package.json

@@ -0,0 +1,20 @@
+{
+  "name": "ttyd",
+  "version": "1.1.0",
+  "description": "Share your terminal over the web",
+  "main": "js/app.js",
+  "repository": {
+    "url": "git@github.com:tsl0922/ttyd.git",
+    "type": "git"
+  },
+  "author": "Shuanglei Tao <tsl0922@gmail.com>",
+  "license": "MIT",
+  "scripts": {
+    "build": "gulp"
+  },
+  "dependencies": {
+    "gulp": "^3.9.1",
+    "gulp-inline-source": "^3.0.0",
+    "xterm": "^2.1.0"
+  }
+}

src/protocol.c

@@ -49,12 +49,12 @@ parse_window_size(const char *json) {
     struct json_object *o = NULL;
 
     if (!json_object_object_get_ex(obj, "columns", &o)) {
-        lwsl_err("columns field not exists!");
+        lwsl_err("columns field not exists!\n");
         return NULL;
     }
     columns = json_object_get_int(o);
     if (!json_object_object_get_ex(obj, "rows", &o)) {
-        lwsl_err("rows field not exists!");
+        lwsl_err("rows field not exists!\n");
         return NULL;
     }
     rows = json_object_get_int(o);