initial bootstrap stuff

vue_flask_stuff/server/app.py

+#!/usr/bin/env python3
+import argparse
+from flask import Flask, render_template
+from flask_socketio import SocketIO
+import pty
+import os
+import subprocess
+import select
+import termios
+import struct
+import fcntl
+import shlex
+import logging
+import sys
+
+logging.getLogger("werkzeug").setLevel(logging.ERROR)
+
+__version__ = "0.5.0.0"
+
+app = Flask(__name__, template_folder="templates", static_folder="static", static_url_path="/static")
+app.config["SECRET_KEY"] = "secret!"
+app.config["fd"] = None
+app.config["child_pid"] = None
+socketio = SocketIO(app)
+
+
+def set_winsize(fd, row, col, xpix=0, ypix=0):
+    logging.debug("setting window size with termios")
+    winsize = struct.pack("HHHH", row, col, xpix, ypix)
+    fcntl.ioctl(fd, termios.TIOCSWINSZ, winsize)
+
+
+def read_and_forward_pty_output():
+    max_read_bytes = 1024 * 20
+    while True:
+        socketio.sleep(0.01)
+        if app.config["fd"]:
+            timeout_sec = 0
+            (data_ready, _, _) = select.select([app.config["fd"]], [], [], timeout_sec)
+            if data_ready:
+                output = os.read(app.config["fd"], max_read_bytes).decode()
+                socketio.emit("pty-output", {"output": output, 'hidden': 'rando'}, namespace="/pty")
+
+
+@app.route("/terminal")
+def manic_term():
+
+    pass
+
+@app.route("/bootstrap")
+def bootstrap():
+    return render_template("bootstrap.html")
+
+@app.route("/")
+def index():
+    return render_template("index.html")
+
+
+@socketio.on("pty-input", namespace="/pty")
+def pty_input(data):
+    """write to the child pty. The pty sees this as if you are typing in a real
+    terminal.
+    """
+    if app.config["fd"]:
+        logging.debug("received input from browser: %s" % data["input"])
+        os.write(app.config["fd"], data["input"].encode())
+
+
+@socketio.on("resize", namespace="/pty")
+def resize(data):
+    if app.config["fd"]:
+        logging.debug(f"Resizing window to {data['rows']}x{data['cols']}")
+        set_winsize(app.config["fd"], data["rows"], data["cols"])
+
+
+@socketio.on("connect", namespace="/pty")
+def connect():
+    """new client connected"""
+    logging.info("new client connected")
+    if app.config["child_pid"]:
+        # already started child process, don't start another
+        return
+
+    # create child process attached to a pty we can read from and write to
+    (child_pid, fd) = pty.fork()
+    if child_pid == 0:
+        # this is the child process fork.
+        # anything printed here will show up in the pty, including the output
+        # of this subprocess
+        subprocess.run(app.config["cmd"])
+    else:
+        # this is the parent process fork.
+        # store child fd and pid
+        app.config["fd"] = fd
+        app.config["child_pid"] = child_pid
+        set_winsize(fd, 50, 50)
+        cmd = " ".join(shlex.quote(c) for c in app.config["cmd"])
+        # logging/print statements must go after this because... I have no idea why
+        # but if they come before the background task never starts
+        socketio.start_background_task(target=read_and_forward_pty_output)
+
+        logging.info("child pid is " + child_pid)
+        logging.info(
+            f"starting background task with command `{cmd}` to continously read "
+            "and forward pty output to client"
+        )
+        logging.info("task started")
+
+
+def main():
+    parser = argparse.ArgumentParser(
+        description=(
+            "A fully functional terminal in your browser. "
+            "https://github.com/cs01/pyxterm.js"
+        ),
+        formatter_class=argparse.ArgumentDefaultsHelpFormatter,
+    )
+    parser.add_argument("-p", "--port", default=5000, help="port to run server on")
+    parser.add_argument(
+        "--host",
+        default="127.0.0.1",
+        help="host to run server on (use 0.0.0.0 to allow access from other hosts)",
+    )
+    parser.add_argument("--debug", action="store_true", help="debug the server")
+    parser.add_argument("--version", action="store_true", help="print version and exit")
+    parser.add_argument(
+        "--command", default="bash", help="Command to run in the terminal"
+    )
+    parser.add_argument(
+        "--cmd-args",
+        default="",
+        help="arguments to pass to command (i.e. --cmd-args='arg1 arg2 --flag')",
+    )
+    args = parser.parse_args()
+    if args.version:
+        print(__version__)
+        exit(0)
+    app.config["cmd"] = [args.command] + shlex.split(args.cmd_args)
+    green = "\033[92m"
+    end = "\033[0m"
+    log_format = green + "pyxtermjs > " + end + "%(levelname)s (%(funcName)s:%(lineno)s) %(message)s"
+    logging.basicConfig(
+        format=log_format,
+        stream=sys.stdout,
+        level=logging.DEBUG if args.debug else logging.INFO,
+    )
+    logging.info(f"serving on http://{args.host}:{args.port}")
+    debug = args.debug
+    debug = True
+    socketio.run(app, debug=debug, port=args.port, host=args.host, allow_unsafe_werkzeug=True )
+
+
+if __name__ == "__main__":
+    main()
\ No newline at end of file

vue_flask_stuff/server/templates/bootstrap.html

+<!DOCTYPE html>
+<html lang="en">
+ <head>
+    <meta charset="utf-8">
+    <meta name="viewport" content="width=device-width, initial-scale=1">
+    <title>Bootstrap demo</title>
+    <link href="https://cdn.jsdelivr.net/npm/bootstrap@5.2.0/dist/css/bootstrap.min.css" rel="stylesheet" integrity="sha384-gH2yIJqKdNHPEq0n4Mqa/HGKIhSkIHeL5AyhkYV8i59U5AR6csBvApHHNl/vI1Bx" crossorigin="anonymous">
+  </head>
+  <body>
+    <h1>Hello, world!</h1>
+    <script src="https://cdn.jsdelivr.net/npm/bootstrap@5.2.0/dist/js/bootstrap.bundle.min.js" integrity="sha384-A3rJD856KowSb7dwlZdYEkO39Gagi7vIsF0jrRAoQmDKKtQBHUuLZ9AsSv4jD4Xa" crossorigin="anonymous"></script>
+
+
+  <div class="accordion" id="accordionPanelsStayOpenExample">
+  <div class="accordion-item">
+    <h2 class="accordion-header" id="panelsStayOpen-headingOne">
+      <button class="accordion-button" type="button" data-bs-toggle="collapse" data-bs-target="#panelsStayOpen-collapseOne" aria-expanded="true" aria-controls="panelsStayOpen-collapseOne">
+        Accordion Item #1 <span class="glyphicon glyphicon-star" aria-hidden="true"> das sdafsdf</span> Star
+      </button>
+    </h2>
+    <div id="panelsStayOpen-collapseOne" class="accordion-collapse collapse show" aria-labelledby="panelsStayOpen-headingOne">
+      <div class="accordion-body">
+        <strong>This is the first item's accordion body.</strong> It is shown by default, until the collapse plugin adds the appropriate classes that we use to style each element. These classes control the overall appearance, as well as the showing and hiding via CSS transitions. You can modify any of this with custom CSS or overriding our default variables. It's also worth noting that just about any HTML can go within the <code>.accordion-body</code>, though the transition does limit overflow.
+  <div class="accordion" id="accordionPanelsStayOpenExample2">
+  <div class="accordion-item">
+    <h2 class="accordion-header" id="panelsStayOpen-headingOne2">
+      <button class="accordion-button" type="button" data-bs-toggle="collapse" data-bs-target="#panelsStayOpen-collapseOne2" aria-expanded="true" aria-controls="panelsStayOpen-collapseOne">
+        Accordion Item #1
+      </button>
+    </h2>
+    <div id="panelsStayOpen-collapseOne2" class="accordion-collapse collapse show" aria-labelledby="panelsStayOpen-headingOne">
+      <div class="accordion-body">
+        <strong>This is the first item's accordion body.</strong> It is shown by default, until the collapse plugin adds the appropriate classes that we use to style each element. These classes control the overall appearance, as well as the showing and hiding via CSS transitions. You can modify any of this with custom CSS or overriding our default variables. It's also worth noting that just about any HTML can go within the <code>.accordion-body</code>, though the transition does limit overflow.
+      </div>
+    </div>
+  </div>
+    </div>
+
+      </div>
+    </div>
+  </div>
+  <div class="accordion-item">
+    <h2 class="accordion-header" id="panelsStayOpen-headingTwo">
+      <button class="accordion-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#panelsStayOpen-collapseTwo" aria-expanded="false" aria-controls="panelsStayOpen-collapseTwo">
+        Accordion Item #2
+      </button>
+    </h2>
+    <div id="panelsStayOpen-collapseTwo" class="accordion-collapse collapse" aria-labelledby="panelsStayOpen-headingTwo">
+      <div class="accordion-body">
+        <strong>This is the second item's accordion body.</strong> It is hidden by default, until the collapse plugin adds the appropriate classes that we use to style each element. These classes control the overall appearance, as well as the showing and hiding via CSS transitions. You can modify any of this with custom CSS or overriding our default variables. It's also worth noting that just about any HTML can go within the <code>.accordion-body</code>, though the transition does limit overflow.
+      </div>
+    </div>
+  </div>
+  <div class="accordion-item">
+    <h2 class="accordion-header" id="panelsStayOpen-headingThree">
+      <button class="accordion-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#panelsStayOpen-collapseThree" aria-expanded="false" aria-controls="panelsStayOpen-collapseThree">
+        Accordion Item #3
+      </button>
+    </h2>
+    <div id="panelsStayOpen-collapseThree" class="accordion-collapse collapse" aria-labelledby="panelsStayOpen-headingThree">
+      <div class="accordion-body">
+        <strong>This is the third item's accordion body.</strong> It is hidden by default, until the collapse plugin adds the appropriate classes that we use to style each element. These classes control the overall appearance, as well as the showing and hiding via CSS transitions. You can modify any of this with custom CSS or overriding our default variables. It's also worth noting that just about any HTML can go within the <code>.accordion-body</code>, though the transition does limit overflow.
+      </div>
+    </div>
+  </div>
+</div>
+
+
+  </body>
+</html>
\ No newline at end of file

vue_flask_stuff/server/templates/index.html

+<html lang="en">
+  <head>
+    <meta charset="utf-8" />
+    <title>pyxterm.js</title>
+    <style>
+      html {
+        font-family: arial;
+      }
+    </style>
+    <link
+      rel="stylesheet"
+      href="https://unpkg.com/xterm@4.11.0/css/xterm.css"
+    />
+  </head>
+  <body>
+    <span style="font-size: 1.4em">pyxterm.js</span>&nbsp;&nbsp;&nbsp;
+    <span style="font-size: small"
+      >status:
+      <span style="font-size: small" id="status">connecting...</span></span
+    >
+
+    <div style="width: 100%; height: calc(100% - 50px)" id="terminal"></div>
+    <div style="width: 50%; height: calc(20%)" id="term2">another terminal</div>
+    <p style="text-align: right; font-size: small">
+      built by <a href="https://chadsmith.dev">Chad Smith</a>
+      <a href="https://github.com/cs01">GitHub</a>
+    </p>
+    <!-- xterm -->
+    <script src="https://unpkg.com/xterm@4.11.0/lib/xterm.js"></script>
+    <script src="https://unpkg.com/xterm-addon-fit@0.5.0/lib/xterm-addon-fit.js"></script>
+    <script src="https://unpkg.com/xterm-addon-web-links@0.4.0/lib/xterm-addon-web-links.js"></script>
+    <script src="https://unpkg.com/xterm-addon-search@0.8.0/lib/xterm-addon-sear
+ch.js"></script>
+    <script src="https://cdnjs.cloudflare.com/ajax/libs/socket.io/4.0.1/socket.io.min.js"></script>
+
+    <script>
+      const term = new Terminal({
+        cursorBlink: true,
+        macOptionIsMeta: true,
+        scrollback: 300,
+      });
+      // https://github.com/xtermjs/xterm.js/issues/2941
+      const fit = new FitAddon.FitAddon();
+      term.loadAddon(fit);
+      term.loadAddon(new WebLinksAddon.WebLinksAddon());
+      term.loadAddon(new SearchAddon.SearchAddon());
+
+      term.open(document.getElementById("terminal"));
+      fit.fit();
+      term.resize(15, 50);
+      console.log(`size: ${term.cols} columns, ${term.rows} rows`);
+      fit.fit();
+      term.writeln("Welcome to pyxterm.js!");
+      term.writeln("https://github.com/cs01/pyxterm.js");
+      term.onData((data) => {
+        console.log("key pressed in browser:", data);
+        socket.emit("pty-input", { input: data });
+      });
+
+      const socket = io.connect("/pty");
+      const status = document.getElementById("status");
+
+      socket.on("pty-output", function (data) {
+        console.log("new output received from server:", data.output);
+        term.write(data.output);
+      });
+
+      socket.on("connect", () => {
+        fitToscreen();
+        status.innerHTML =
+          '<span style="background-color: lightgreen;">connected</span>';
+      });
+
+      socket.on("disconnect", () => {
+        status.innerHTML =
+          '<span style="background-color: #ff8383;">disconnected</span>';
+      });
+
+      function fitToscreen() {
+        fit.fit();
+        const dims = { cols: term.cols, rows: term.rows };
+        console.log("sending new dimensions to server's pty", dims);
+        socket.emit("resize", dims);
+      }
+
+      function debounce(func, wait_ms) {
+        let timeout;
+        return function (...args) {
+          const context = this;
+          clearTimeout(timeout);
+          timeout = setTimeout(() => func.apply(context, args), wait_ms);
+        };
+      }
+
+      const wait_ms = 50;
+      window.onresize = debounce(fitToscreen, wait_ms);
+    </script>
+    <script>
+      const term2 = new Terminal({
+        cursorBlink: true,
+        macOptionIsMeta: true,
+        scrollback: true,
+      });
+      // https://github.com/xtermjs/xterm.js/issues/2941
+      const fit2 = new FitAddon.FitAddon();
+      term2.loadAddon(fit2);
+      term2.loadAddon(new WebLinksAddon.WebLinksAddon());
+      term2.loadAddon(new SearchAddon.SearchAddon());
+
+      term2.open(document.getElementById("term2"));
+      fit2.fit();
+      term2.resize(15, 50);
+      console.log(`size: ${term.cols} columns, ${term.rows} rows`);
+      fit2.fit();
+      term2.writeln("Welcome to pyxterm.js!");
+      term2.writeln("https://github.com/cs01/pyxterm.js");
+
+    </script>
+
+  </body>
+</html>
\ No newline at end of file

vue_flask_stuff/server/templates/terminal.html

+<html lang="en">
+  <head>
+    <meta charset="utf-8" />
+    <title>pyxterm.js</title>
+    <style>
+      html {
+        font-family: arial;
+      }
+    </style>
+    <link
+      rel="stylesheet"
+      href="https://unpkg.com/xterm@4.11.0/css/xterm.css"
+    />
+  </head>
+  <body>
+    <span style="font-size: 1.4em">pyxterm.js</span>&nbsp;&nbsp;&nbsp;
+    <span style="font-size: small"
+      >status:
+      <span style="font-size: small" id="status">connecting...</span></span
+    >
+
+    <div style="width: 100%; height: calc(100% - 50px)" id="terminal"></div>
+
+    <p style="text-align: right; font-size: small">
+      built by <a href="https://chadsmith.dev">Chad Smith</a>
+      <a href="https://github.com/cs01">GitHub</a>
+    </p>
+    <!-- xterm -->
+    <script src="https://unpkg.com/xterm@4.11.0/lib/xterm.js"></script>
+    <script src="https://unpkg.com/xterm-addon-fit@0.5.0/lib/xterm-addon-fit.js"></script>
+    <script src="https://unpkg.com/xterm-addon-web-links@0.4.0/lib/xterm-addon-web-links.js"></script>
+    <script src="https://unpkg.com/xterm-addon-search@0.8.0/lib/xterm-addon-sear
+ch.js"></script>
+    <script src="https://cdnjs.cloudflare.com/ajax/libs/socket.io/4.0.1/socket.io.min.js"></script>
+
+    <script>
+      const term = new Terminal({
+        cursorBlink: true,
+        macOptionIsMeta: true,
+        scrollback: true,
+      });
+      // https://github.com/xtermjs/xterm.js/issues/2941
+      const fit = new FitAddon.FitAddon();
+      term.loadAddon(fit);
+      term.loadAddon(new WebLinksAddon.WebLinksAddon());
+      term.loadAddon(new SearchAddon.SearchAddon());
+
+      term.open(document.getElementById("terminal"));
+      fit.fit();
+      term.resize(15, 50);
+      console.log(`size: ${term.cols} columns, ${term.rows} rows`);
+      fit.fit();
+      term.writeln("Welcome to pyxterm.js!");
+      term.writeln("https://github.com/cs01/pyxterm.js");
+      term.onData((data) => {
+        console.log("key pressed in browser:", data);
+        socket.emit("pty-input", { input: data });
+      });
+
+      const socket = io.connect("/pty");
+      const status = document.getElementById("status");
+
+      socket.on("pty-output", function (data) {
+        console.log("new output received from server:", data.output);
+        term.write(data.output);
+      });
+
+      socket.on("connect", () => {
+        fitToscreen();
+        status.innerHTML =
+          '<span style="background-color: lightgreen;">connected</span>';
+      });
+
+      socket.on("disconnect", () => {
+        status.innerHTML =
+          '<span style="background-color: #ff8383;">disconnected</span>';
+      });
+
+      function fitToscreen() {
+        fit.fit();
+        const dims = { cols: term.cols, rows: term.rows };
+        console.log("sending new dimensions to server's pty", dims);
+        socket.emit("resize", dims);
+      }
+
+      function debounce(func, wait_ms) {
+        let timeout;
+        return function (...args) {
+          const context = this;
+          clearTimeout(timeout);
+          timeout = setTimeout(() => func.apply(context, args), wait_ms);
+        };
+      }
+
+      const wait_ms = 50;
+      window.onresize = debounce(fitToscreen, wait_ms);
+    </script>
+  </body>
+</html>
\ No newline at end of file