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https://github.com/DeeJanuz/frametop.git
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DeeJanuzandClaude Opus 5.5
2487351556
steam/ft-steam menu opens the SteamVR dashboard on Steam's menu, or closes the dashboard if it's up, without pointer mode: it asks Steam's UI over its debugging port to show its dashboard overlay (ShowVROverlay, what Steam calls itself) and focus the Steam frame's left menu (MenuStore.OpenMainMenu). ft-steam check says whether those calls still exist, and update-check.py runs it, since a Steam client update can rename them. The CDP client moves from display-settings/steam_settings.py to steam/steamui.py, so both use it. Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
109 lines
4.1 KiB
Python
109 lines
4.1 KiB
Python
"""Run JavaScript in Steam's UI, standard library only.
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Steam on the Frame runs with -cef-enable-debugging, so its UI's JavaScript context
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(SharedJSContext) is reachable over the Chrome DevTools Protocol on 127.0.0.1:8080. Steam's
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own calls live there: SteamClient.* (settings, SteamVR's dashboard) and the UI's stores
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(SteamUIStore). Used by Frametop Display Settings (display-settings/steam_settings.py) and
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ft-steam (the Steam menu shortcut).
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evaluate(expression) the expression's value (awaited, JSON-able); SteamUnreachable when
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Steam or its UI isn't there, or the script threw
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"""
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import base64
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import json
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import os
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import socket
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import struct
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import urllib.request
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CDP_PORT = 8080
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class SteamUnreachable(Exception):
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pass
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class _WebSocket:
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def __init__(self, url, timeout=5):
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host_port, path = url[len("ws://"):].split("/", 1)
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host, port = host_port.rsplit(":", 1)
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self.sock = socket.create_connection((host, int(port)), timeout=timeout)
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key = base64.b64encode(os.urandom(16)).decode()
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self.sock.sendall((f"GET /{path} HTTP/1.1\r\nHost: {host_port}\r\nUpgrade: websocket\r\n"
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f"Connection: Upgrade\r\nSec-WebSocket-Key: {key}\r\nSec-WebSocket-Version: 13\r\n\r\n").encode())
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head = b""
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while b"\r\n\r\n" not in head:
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chunk = self.sock.recv(4096)
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if not chunk:
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raise SteamUnreachable("Steam closed the connection")
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head += chunk
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if b" 101 " not in head.split(b"\r\n", 1)[0]:
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raise SteamUnreachable(head.split(b"\r\n", 1)[0].decode(errors="replace"))
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self.buf = head.split(b"\r\n\r\n", 1)[1]
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def send(self, text):
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data, mask = text.encode(), os.urandom(4)
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n = len(data)
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if n < 126:
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head = struct.pack(">BB", 0x81, 0x80 | n)
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elif n < 65536:
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head = struct.pack(">BBH", 0x81, 0x80 | 126, n)
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else:
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head = struct.pack(">BBQ", 0x81, 0x80 | 127, n)
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self.sock.sendall(head + mask + bytes(b ^ mask[i % 4] for i, b in enumerate(data)))
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def _take(self, n):
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while len(self.buf) < n:
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chunk = self.sock.recv(65536)
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if not chunk:
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raise SteamUnreachable("Steam closed the connection")
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self.buf += chunk
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out, self.buf = self.buf[:n], self.buf[n:]
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return out
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def recv(self):
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message = b""
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while True:
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b0, b1 = self._take(2)
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n = b1 & 0x7F
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if n == 126:
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n = struct.unpack(">H", self._take(2))[0]
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elif n == 127:
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n = struct.unpack(">Q", self._take(8))[0]
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message += self._take(n)
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if b0 & 0x80:
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return message.decode(errors="replace")
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def close(self):
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self.sock.close()
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def evaluate(expression):
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"""Runs JavaScript in Steam's SharedJSContext and returns its (awaited) value."""
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try:
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with urllib.request.urlopen(f"http://127.0.0.1:{CDP_PORT}/json", timeout=3) as r:
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targets = json.load(r)
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except OSError as e:
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raise SteamUnreachable(f"Steam isn't reachable on port {CDP_PORT} ({e})") from e
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url = next((t["webSocketDebuggerUrl"] for t in targets if t.get("title") == "SharedJSContext"), None)
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if not url:
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raise SteamUnreachable("Steam's UI isn't running")
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try:
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ws = _WebSocket(url)
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try:
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ws.send(json.dumps({"id": 1, "method": "Runtime.evaluate",
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"params": {"expression": expression, "awaitPromise": True, "returnByValue": True}}))
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while True:
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reply = json.loads(ws.recv())
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if reply.get("id") == 1:
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break
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finally:
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ws.close()
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except OSError as e:
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raise SteamUnreachable(str(e)) from e
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result = reply.get("result", {})
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if "exceptionDetails" in result:
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details = result["exceptionDetails"]
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raise SteamUnreachable(details.get("exception", {}).get("description") or details.get("text", "error"))
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return result.get("result", {}).get("value")
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