Add WebServer settings app

internal_filesystem/lib/mpos/__init__.py

@@ -19,6 +19,7 @@ from .build_info import BuildInfo
 
 # Battery manager (imported early for UI dependencies)
 from .battery_manager import BatteryManager
+from .webserver.webserver import WebServer
 
 # Common activities
 from .app.activities.chooser import ChooserActivity
@@ -67,7 +68,7 @@ __all__ = [
     "Activity",
     "SharedPreferences",
     "ConnectivityManager", "DownloadManager", "WifiService", "AudioManager", "Intent",
-    "ActivityNavigator", "AppManager", "TaskManager", "CameraManager", "BatteryManager",
+    "ActivityNavigator", "AppManager", "TaskManager", "CameraManager", "BatteryManager", "WebServer",
     # Device and build info
     "DeviceInfo", "BuildInfo",
     # Common activities

internal_filesystem/lib/mpos/main.py

@@ -229,11 +229,10 @@ async def asyncio_repl():
 TaskManager.create_task(asyncio_repl()) # only gets started after TaskManager.start()
 
 try:
-    import webrepl
-    from mpos.webserver import accept_handler as webrepl_accept_handler
-    webrepl.start(port=7890, password="MPOSweb26", accept_handler=webrepl_accept_handler)  # password is max 9 characters
+    from mpos import WebServer
+    WebServer.auto_start()
 except Exception as e:
-    print(f"Could not start webrepl - this is normal on desktop systems: {e}")
+    print(f"Could not start webserver - this is normal on desktop systems: {e}")
 
 async def ota_rollback_cancel():
     try:

internal_filesystem/lib/mpos/webserver/__init__.py

@@ -1,5 +1,6 @@
 """Web server helpers for MicroPythonOS."""
 
 from .webrepl_http import accept_handler
+from .webserver import WebServer
 
-__all__ = ["accept_handler"]
+__all__ = ["accept_handler", "WebServer"]

internal_filesystem/lib/mpos/webserver/webrepl.py

@@ -0,0 +1,182 @@
+# This module should be imported from REPL, not run from command line.
+import binascii
+import hashlib
+from micropython import const
+try:
+    import network
+except ImportError:
+    network = None
+import os
+import socket
+import sys
+import websocket
+import _webrepl
+
+listen_s = None
+client_s = None
+
+DEBUG = 0
+
+_DEFAULT_STATIC_HOST = const("https://micropython.org/webrepl/")
+static_host = _DEFAULT_STATIC_HOST
+
+
+def server_handshake(cl):
+    req = cl.makefile("rwb", 0)
+    # Skip HTTP GET line.
+    l = req.readline()
+    if DEBUG:
+        sys.stdout.write(repr(l))
+
+    webkey = None
+    upgrade = False
+    websocket = False
+
+    while True:
+        l = req.readline()
+        if not l:
+            # EOF in headers.
+            return False
+        if l == b"\r\n":
+            break
+        if DEBUG:
+            sys.stdout.write(l)
+        h, v = [x.strip() for x in l.split(b":", 1)]
+        if DEBUG:
+            print((h, v))
+        if h == b"Sec-WebSocket-Key":
+            webkey = v
+        elif h == b"Connection" and b"Upgrade" in v:
+            upgrade = True
+        elif h == b"Upgrade" and v == b"websocket":
+            websocket = True
+
+    if not (upgrade and websocket and webkey):
+        return False
+
+    if DEBUG:
+        print("Sec-WebSocket-Key:", webkey, len(webkey))
+
+    d = hashlib.sha1(webkey)
+    d.update(b"258EAFA5-E914-47DA-95CA-C5AB0DC85B11")
+    respkey = d.digest()
+    respkey = binascii.b2a_base64(respkey)[:-1]
+    if DEBUG:
+        print("respkey:", respkey)
+
+    cl.send(
+        b"""\
+HTTP/1.1 101 Switching Protocols\r
+Upgrade: websocket\r
+Connection: Upgrade\r
+Sec-WebSocket-Accept: """
+    )
+    cl.send(respkey)
+    cl.send("\r\n\r\n")
+
+    return True
+
+
+def send_html(cl):
+    cl.send(
+        b"""\
+HTTP/1.0 200 OK\r
+\r
+<base href=\""""
+    )
+    cl.send(static_host)
+    cl.send(
+        b"""\"></base>\r
+<script src="webrepl_content.js"></script>\r
+"""
+    )
+    cl.close()
+
+
+def setup_conn(port, accept_handler):
+    global listen_s
+    listen_s = socket.socket()
+    listen_s.setsockopt(socket.SOL_SOCKET, socket.SO_REUSEADDR, 1)
+
+    ai = socket.getaddrinfo("0.0.0.0", port)
+    addr = ai[0][4]
+
+    listen_s.bind(addr)
+    listen_s.listen(1)
+    if accept_handler:
+        listen_s.setsockopt(socket.SOL_SOCKET, 20, accept_handler)
+    if network:
+        for i in (network.WLAN.IF_AP, network.WLAN.IF_STA):
+            iface = network.WLAN(i)
+            if iface.active():
+                print("WebREPL server started on http://%s:%d/" % (iface.ifconfig()[0], port))
+    return listen_s
+
+
+def accept_conn(listen_sock):
+    global client_s
+    cl, remote_addr = listen_sock.accept()
+
+    if not server_handshake(cl):
+        send_html(cl)
+        return False
+
+    prev = os.dupterm(None)
+    os.dupterm(prev)
+    if prev:
+        print("\nConcurrent WebREPL connection from", remote_addr, "rejected")
+        cl.close()
+        return False
+    print("\nWebREPL connection from:", remote_addr)
+    client_s = cl
+
+    ws = websocket.websocket(cl, True)
+    ws = _webrepl._webrepl(ws)
+    cl.setblocking(False)
+    # notify REPL on socket incoming data (ESP32/ESP8266-only)
+    if hasattr(os, "dupterm_notify"):
+        cl.setsockopt(socket.SOL_SOCKET, 20, os.dupterm_notify)
+    os.dupterm(ws)
+
+    return True
+
+
+def stop():
+    global listen_s, client_s
+    os.dupterm(None)
+    if client_s:
+        client_s.close()
+    if listen_s:
+        listen_s.close()
+
+
+def start(port=8266, password=None, accept_handler=accept_conn):
+    global static_host
+    stop()
+    webrepl_pass = password
+    if webrepl_pass is None:
+        try:
+            import webrepl_cfg
+
+            webrepl_pass = webrepl_cfg.PASS
+            if hasattr(webrepl_cfg, "BASE"):
+                static_host = webrepl_cfg.BASE
+        except:
+            print("WebREPL is not configured, run 'import webrepl_setup'")
+
+    _webrepl.password(webrepl_pass)
+    s = setup_conn(port, accept_handler)
+
+    if accept_handler is None:
+        print("Starting webrepl in foreground mode")
+        # Run accept_conn to serve HTML until we get a websocket connection.
+        while not accept_conn(s):
+            pass
+    elif password is None:
+        print("Started webrepl in normal mode")
+    else:
+        print("Started webrepl in manual override mode")
+
+
+def start_foreground(port=8266, password=None):
+    start(port, password, None)

internal_filesystem/lib/mpos/webserver/webrepl_http.py

@@ -3,7 +3,7 @@ import socket
 import uio
 
 import _webrepl
-import webrepl
+from . import webrepl
 import websocket
 
 WEBREPL_HTML_PATH = "builtin/html/webrepl_inlined_minified.html"

internal_filesystem/lib/mpos/webserver/webserver.py

@@ -0,0 +1,115 @@
+"""WebServer control for MicroPythonOS."""
+
+from ..config import SharedPreferences
+from .webrepl_http import accept_handler
+
+
+class WebServer:
+    PREFS_NAMESPACE = "com.micropythonos.webserver"
+    DEFAULTS = {
+        "autostart": "False",
+        "port": "7890",
+        "password": "MPOSweb26",
+    }
+
+    _started = False
+    _port = None
+    _password = None
+    _autostart = None
+    _last_error = None
+
+    @classmethod
+    def _prefs(cls):
+        return SharedPreferences(cls.PREFS_NAMESPACE, defaults=cls.DEFAULTS)
+
+    @classmethod
+    def _parse_bool(cls, value):
+        return str(value).lower() in ("true", "1", "yes", "on")
+
+    @classmethod
+    def _parse_port(cls, value):
+        try:
+            return int(value)
+        except Exception:
+            return int(cls.DEFAULTS["port"])
+
+    @classmethod
+    def _sanitize_password(cls, value):
+        if not value:
+            value = cls.DEFAULTS["password"]
+        if len(value) > 9:
+            value = value[:9]
+        return value
+
+    @classmethod
+    def load_settings(cls):
+        prefs = cls._prefs()
+        cls._autostart = cls._parse_bool(prefs.get_string("autostart", cls.DEFAULTS["autostart"]))
+        cls._port = cls._parse_port(prefs.get_string("port", cls.DEFAULTS["port"]))
+        cls._password = cls._sanitize_password(prefs.get_string("password", cls.DEFAULTS["password"]))
+
+    @classmethod
+    def status(cls):
+        cls.load_settings()
+        return {
+            "state": "started" if cls._started else "stopped",
+            "started": cls._started,
+            "port": cls._port,
+            "password": cls._password,
+            "autostart": cls._autostart,
+            "last_error": cls._last_error,
+        }
+
+    @classmethod
+    def is_started(cls):
+        return cls._started
+
+    @classmethod
+    def start(cls):
+        cls.load_settings()
+        try:
+            from . import webrepl
+
+            webrepl.start(port=cls._port, password=cls._password, accept_handler=accept_handler)
+            cls._started = True
+            cls._last_error = None
+            print(f"WebServer started on port {cls._port}")
+            return True
+        except Exception as exc:
+            cls._last_error = exc
+            cls._started = False
+            print(f"WebServer start failed: {exc}")
+            return False
+
+    @classmethod
+    def stop(cls):
+        try:
+            from . import webrepl
+
+            if hasattr(webrepl, "stop"):
+                webrepl.stop()
+            cls._started = False
+            cls._last_error = None
+            print("WebServer stopped")
+            return True
+        except Exception as exc:
+            cls._last_error = exc
+            print(f"WebServer stop failed: {exc}")
+            return False
+
+    @classmethod
+    def apply_settings(cls, restart_if_running=True):
+        was_running = cls._started
+        cls.load_settings()
+        if was_running and restart_if_running:
+            cls.stop()
+            cls.start()
+        return cls.status()
+
+    @classmethod
+    def auto_start(cls):
+        cls.load_settings()
+        if cls._autostart:
+            return cls.start()
+        print("WebServer autostart disabled")
+        return False