Files
saphid--frame-control/ui/server.py
T
saphidandClaude Opus 5.5 60571dbfac Prepare Frame Control 0.2.0 for public testing
- Without the maintainer's key, Android compatibility reports stay on the
  Mac and the UI says so; the shared database is never contacted.
- Remove personal infrastructure details from scripts and docs: the Drive
  folder and gog wrapper now come from the environment, and the Chromium
  build host is required instead of defaulted.
- Add an MIT license, tester instructions in the README, and bump to 0.2.0.

Co-Authored-By: Claude Opus 5.5 (1M context) <noreply@anthropic.com>
2026-09-26 07:37:37 +10:00

979 lines
41 KiB
Python
Executable File

#!/usr/bin/env python3
"""Frame Control: a small local web UI for managing the Steam Frame from the Mac.
Stdlib only. Listens on 127.0.0.1 and talks to the headset through the `frame`
SSH alias set up by scripts/connect.sh, reusing the scripts in ../scripts.
Usage: ui/server.py [--port 47810] (normally started by scripts/frame-ui.sh)
Env: FRAME_ALIAS (default frame)
"""
import argparse
import http.client
import json
import os
import re
import select
import shlex
import shutil
import signal
import socket
import subprocess
import sys
import tempfile
import threading
import time
from http.server import BaseHTTPRequestHandler, ThreadingHTTPServer
from pathlib import Path
from urllib.parse import parse_qs, unquote, urlparse
import frame_android
import frame_catalog
import frame_store
HERE = Path(__file__).resolve().parent
SCRIPTS = HERE.parent / "scripts"
FRAME = os.environ.get("FRAME_ALIAS", "frame")
# Reuse one SSH connection for the frequent status/screenshot calls. /tmp, not
# $TMPDIR: macOS's per-user temp path overflows the unix socket path limit.
CONTROL = f"/tmp/frame-ui-{os.getuid()}-%C"
MUX = ["ssh", "-o", "BatchMode=yes", "-o", f"ControlPath={CONTROL}"]
# Commands use the master when it's up and connect directly when it isn't.
SSH = [*MUX, "-o", "ControlMaster=no", "-o", "ConnectTimeout=5"]
# Android helpers share the multiplexed connection when it's up.
frame_android.SSH_OPTS = SSH[1:]
APPID = re.compile(r"^\d{1,10}$")
FLATPAK_ID = re.compile(r"^[A-Za-z0-9][A-Za-z0-9_-]*(\.[A-Za-z0-9_-]+){2,}$")
MAX_UPLOAD = 8 * 1024**3
MAX_JSON = 1024**2
# gamescope writes the PNG asynchronously; wait until its size stops changing.
SCREENSHOT = r"""
set -eu
f=$(mktemp /tmp/frame-ui-XXXXXX.png)
trap 'rm -f "$f"' EXIT
XDG_RUNTIME_DIR=/run/user/$(id -u) WAYLAND_DISPLAY=gamescope-0 gamescopectl screenshot "$f" >/dev/null 2>&1
last=-1
for i in $(seq 1 50); do
sleep 0.1
size=$(stat -c %s "$f" 2>/dev/null || echo 0)
if [ "$size" -gt 0 ] && [ "$size" = "$last" ]; then cat "$f"; exit 0; fi
last=$size
done
echo "gamescope did not write a screenshot" >&2
exit 1
"""
class Failure(Exception):
def __init__(self, message, status=502):
super().__init__(message)
self.status = status
_master_lock = threading.Lock()
_master = None
def ensure_master():
"""Start the shared SSH connection if it isn't up (one attempt at a time).
No ConnectTimeout here: with it, OpenSSH's master takes ~5s to open its socket.
"""
global _master
def up():
try:
return subprocess.run([*MUX, "-O", "check", FRAME], capture_output=True,
timeout=5).returncode == 0
except subprocess.TimeoutExpired:
return False
with _master_lock:
if up() or (_master and _master.poll() is None):
return
# Keepalives make a dead link (Frame asleep, off Wi-Fi) exit within ~10s,
# so the next request starts a fresh master.
_master = subprocess.Popen([*MUX, "-o", "ControlMaster=yes", "-o", "ServerAliveInterval=5",
"-o", "ServerAliveCountMax=2", "-N", FRAME],
stdin=subprocess.DEVNULL, stdout=subprocess.DEVNULL,
stderr=subprocess.DEVNULL, start_new_session=True)
for _ in range(60):
if up() or _master.poll() is not None:
return
time.sleep(0.05)
def ssh(remote, *, stdin=None, timeout=30, text=True):
try:
ensure_master()
r = subprocess.run([*SSH, FRAME, remote], input=stdin, capture_output=True,
text=text, errors="replace" if text else None, timeout=timeout)
except subprocess.TimeoutExpired:
raise Failure(f"Timed out talking to {FRAME}")
if r.returncode != 0:
err = (r.stderr or r.stdout) if text else (r.stderr or r.stdout).decode(errors="replace")
failure = Failure(strip_ansi(err).strip() or f"ssh exited {r.returncode}")
failure.stdout = r.stdout if text else r.stdout.decode(errors="replace")
raise failure
return r.stdout
def script(name, *args, stdin=None, timeout=900):
"""Run one of ../scripts and return its combined output."""
try:
r = subprocess.run([str(SCRIPTS / name), *args], input=stdin, text=True, timeout=timeout,
stdout=subprocess.PIPE, stderr=subprocess.STDOUT,
env={**os.environ, "FRAME_ALIAS": FRAME})
except subprocess.TimeoutExpired:
raise Failure(f"{name} timed out")
out = strip_ansi(r.stdout).strip()
if r.returncode != 0:
raise Failure(out or f"{name} exited {r.returncode}")
return out
def strip_ansi(s):
return re.sub(r"\x1b\[[0-9;?]*[A-Za-z]|\r", "", s)
def terminal(command):
"""Open Terminal.app running `command` (for anything needing a password)."""
as_str = command.replace("\\", "\\\\").replace('"', '\\"')
r = subprocess.run(["osascript", "-e", 'tell application "Terminal"',
"-e", f'do script "{as_str}"', "-e", "activate", "-e", "end tell"],
capture_output=True, text=True)
if r.returncode != 0:
# Usually macOS Automation consent for Terminal was denied.
raise Failure(f"Couldn't open Terminal: {r.stderr.strip()}", 500)
def open_app(name, fallback_url):
if subprocess.run(["open", "-a", name], capture_output=True).returncode == 0:
return f"Opened {name}"
subprocess.run(["open", fallback_url])
return f"{name} isn't installed; opened its download page"
# ---- actions ---------------------------------------------------------------
def status(_body):
return json.loads(ssh("python3 -", stdin=(HERE / "frame_status.py").read_text(), timeout=20))
def headset_view():
"""Both eyes as SteamVR composites them (see frame_vrshot.py); PNG bytes."""
# `timeout`: VR_Init can block if SteamVR is restarting.
out = ssh("timeout 15 python3 -", stdin=(HERE / "frame_vrshot.py").read_text(), timeout=30)
# SteamVR prints its own notices (e.g. about vrwebhelper) on stdout too, so
# take the last line that is our result object.
result = {"error": out.strip() or "no output"}
for line in out.splitlines():
try:
obj = json.loads(line)
except ValueError:
continue
if isinstance(obj, dict) and ("path" in obj or "error" in obj):
result = obj
if "error" in result:
raise Failure(str(result["error"]))
path = str(result["path"])
if not re.fullmatch(r"/tmp/frame-vrcap/shot-\d+-vr\.png", path):
raise Failure(f"unexpected capture path {path!r}")
# Captures show whatever was on screen, so delete even if the copy fails.
try:
return ssh(f"cat {path}; rc=$?; rm -f {path}; exit $rc", timeout=20, text=False)
finally:
try:
ssh(f"rm -f {path}", timeout=10)
except Failure:
pass # frame_vrshot.py sweeps leftovers on the next capture
# Screenshots taken in the headset with Steam's shortcut. Steam files each under the app
# it was taken in: userdata/<account>/760/remote/<appid>/screenshots/<file>,
# with a smaller copy in screenshots/thumbnails/. A shot's id is
# "<account>/<appid>/<file>", checked here before it goes near a shell.
SHOT_ROOT = ".local/share/Steam/userdata"
SHOT_ID = re.compile(r"(\d{1,12})/(\d{1,20})/(\d{14}_\d{1,4}\.(?:jpg|png))")
SHOTS_DIR = Path.home() / "Pictures" / "SteamFrame"
LIST_SHOTS = f"""cd ~/{SHOT_ROOT} 2>/dev/null || exit 0
find . -mindepth 6 -maxdepth 6 -path './*/760/remote/*/screenshots/*' -type f \\
\\( -name '*.jpg' -o -name '*.png' \\) -printf '%P\\t%s\\t%T@\\n'"""
def shot_path(shot_id, thumb=False):
m = SHOT_ID.fullmatch(shot_id) if isinstance(shot_id, str) else None
if not m:
raise Failure("bad screenshot id", 400)
return f"{SHOT_ROOT}/{m[1]}/760/remote/{m[2]}/screenshots/{'thumbnails/' if thumb else ''}{m[3]}"
def list_shots():
shots = []
for line in ssh(LIST_SHOTS, timeout=20).splitlines():
rel, _, rest = line.partition("\t")
parts = rel.split("/") # account/760/remote/appid/screenshots/file
size, _, mtime = rest.partition("\t")
shot_id = f"{parts[0]}/{parts[3]}/{parts[-1]}" if len(parts) == 6 else ""
if not SHOT_ID.fullmatch(shot_id) or not size.isdigit():
continue
try:
when = float(mtime)
except ValueError:
continue
local = SHOTS_DIR / parts[-1]
shots.append({"id": shot_id, "appid": parts[3], "file": parts[-1], "size": int(size), "time": when,
"saved": local.exists() and local.stat().st_size == int(size)})
shots.sort(key=lambda s: s["time"], reverse=True)
return {"shots": shots, "folder": str(SHOTS_DIR)}
def shot_image(query):
q = parse_qs(query)
shot_id = (q.get("id") or [""])[0]
full = shot_path(shot_id)
if q.get("thumb") == ["1"]:
# Steam writes the thumbnail a moment after the shot; fall back to the full image.
thumb = shot_path(shot_id, thumb=True)
remote = f"if [ -s {thumb} ]; then cat {thumb}; else cat {full}; fi"
else:
remote = f"cat {full}"
ctype = "image/png" if shot_id.endswith(".png") else "image/jpeg"
return ssh(remote, timeout=30, text=False), ctype
def save_shots(body):
"""Copy screenshots to ~/Pictures/SteamFrame, skipping ones already there."""
ids = body.get("ids")
if not isinstance(ids, list) or not 0 < len(ids) <= 1000:
raise Failure("ids must be a list of 1-1000 screenshot ids", 400)
paths = [shot_path(i) for i in ids]
todo = [p for p in paths if not (SHOTS_DIR / p.rsplit("/", 1)[-1]).exists()]
if todo:
SHOTS_DIR.mkdir(parents=True, exist_ok=True)
ensure_master()
# Copy into a hidden folder and move complete files in, so a cut-off
# copy never looks saved. -p keeps the time the shot was taken.
incoming = Path(tempfile.mkdtemp(prefix=".incoming-", dir=SHOTS_DIR))
try:
try:
r = subprocess.run(["scp", "-p", *SSH[1:], *(f"{FRAME}:{p}" for p in todo), str(incoming)],
capture_output=True, text=True, timeout=300)
except subprocess.TimeoutExpired:
raise Failure("Copying screenshots timed out")
if r.returncode != 0:
raise Failure(strip_ansi(r.stderr).strip() or f"scp exited {r.returncode}")
for f in incoming.iterdir():
os.replace(f, SHOTS_DIR / f.name)
finally:
shutil.rmtree(incoming, ignore_errors=True)
n, skipped = len(todo), len(ids) - len(todo)
msg = f"Saved {n} screenshot{'s' * (n != 1)} to ~/Pictures/SteamFrame"
return {"message": msg + (f" ({skipped} already there)" if skipped else ""), "saved": n}
# Live video of the headset view. SteamVR's steamvr-v4l2cam.service copies the
# headset view (one undistorted 1920x1080 image) into the v4l2loopback device
# /dev/video99. ffmpeg encodes it with x264 (the hardware encoder crashes
# ffmpeg) and the raw H.264 comes back over SSH for the page to decode with
# WebCodecs. An access unit delimiter starts every frame so the page can split
# the stream, and repeated SPS/PPS let it start at any keyframe. ffmpeg runs in
# the background while the shell waits for our stdin to close: when the local
# ssh goes, the channel closes and the shell kills ffmpeg, even one that has
# stopped writing (and so would never get SIGPIPE).
STREAM_DEVICE = "/dev/video99"
STREAM_HEIGHTS = (720, 1080)
STREAM_FPS = (30, 60)
STREAM_STALL = 10 # seconds without video before the stream is dropped
_stream_lock = threading.Lock()
_stream_proc = None
def stream_command(query):
q = parse_qs(query)
try:
height = int((q.get("h") or ["720"])[0])
fps = int((q.get("fps") or ["30"])[0])
except ValueError:
raise Failure("h and fps must be integers", 400)
if height not in STREAM_HEIGHTS or fps not in STREAM_FPS:
raise Failure(f"h must be one of {STREAM_HEIGHTS} and fps one of {STREAM_FPS}", 400)
rate = 3 if height == 720 else 6 # Mbit/s
return (f"[ -e {STREAM_DEVICE} ] || {{ echo 'No headset view device ({STREAM_DEVICE}). Is SteamVR running?' >&2; exit 3; }}; "
f"ffmpeg -hide_banner -loglevel error -nostdin -f v4l2 -video_size 1920x1080 -i {STREAM_DEVICE} "
f"-vf fps={fps},scale=-2:{height},format=yuv420p -c:v libx264 -preset ultrafast -tune zerolatency "
f"-g {fps * 2} -bf 0 -b:v {rate}M -maxrate {rate}M -bufsize {rate // 2 or 1}M "
f"-x264-params aud=1:repeat-headers=1 -f h264 - & p=$!; "
f"exec >&-; cat >/dev/null; kill $p 2>/dev/null; wait $p")
def launch(body):
appid = str(body.get("appid", ""))
if not APPID.match(appid):
raise Failure("bad appid", 400)
ssh(f"steam steam://rungameid/{appid} >/dev/null 2>&1 &")
return {"message": f"Launching {appid}"}
def steam_frame(*args, timeout=40):
"""Run frame_steam.py on the Frame (it drives the Steam client) and return its JSON."""
try:
out = ssh("python3 - " + " ".join(map(shlex.quote, args)),
stdin=(HERE / "frame_steam.py").read_text(), timeout=timeout)
except Failure as e:
# frame_steam.py prints {"error": ...} on stdout when it fails, but ssh()
# reports stderr instead if there was any, so look in both.
for line in [*reversed(getattr(e, "stdout", "").splitlines()), *reversed(str(e).splitlines())]:
try:
raise Failure(json.loads(line)["error"]) from None
except (ValueError, KeyError, TypeError):
continue
raise
return json.loads(out)
def steam(body):
"""Steam games: install an owned game, or open its store page in the headset."""
appid, action = str(body.get("appid", "")), body.get("action")
if not APPID.match(appid):
raise Failure("bad appid", 400)
if action not in ("install", "store"):
raise Failure("action must be install or store", 400)
return steam_frame(action, appid)
def steam_search(query):
q = parse_qs(query)
cc = (q.get("cc") or [""])[0].upper()
if not re.fullmatch(r"[A-Z]{2}", cc):
raise Failure("cc must be a two-letter country code", 400)
try:
return {"results": frame_store.search((q.get("q") or [""])[0], cc)}
except (OSError, ValueError, TypeError, AttributeError, http.client.HTTPException) as e:
raise Failure(f"Steam store search failed: {e}")
def set_volume(body):
# Validate everything before touching the headset.
level = None
if "level" in body:
level = float(body["level"])
if not 0 <= level <= 1:
raise Failure("level must be 0..1", 400)
if "muted" in body:
ssh(f"wpctl set-mute @DEFAULT_AUDIO_SINK@ {1 if body['muted'] else 0}")
if level is not None:
ssh(f"wpctl set-volume @DEFAULT_AUDIO_SINK@ {level:.2f}")
return {"message": "Volume updated"}
def clipboard(body):
if body.get("fromMac"):
return {"message": script("paste-to-frame.sh", timeout=30)}
text = body.get("text")
if not isinstance(text, str) or not text:
raise Failure("nothing to send", 400)
return {"message": script("paste-to-frame.sh", "-", stdin=text, timeout=30)}
def flatpak(body):
app, action = str(body.get("id", "")), body.get("action")
if not FLATPAK_ID.match(app):
raise Failure("bad Flatpak app ID", 400)
if action == "install":
return {"message": script("install-apps.sh", app)}
if action == "uninstall":
out = ssh(f"flatpak uninstall --user -y -- {shlex.quote(app)}", timeout=300)
return {"message": strip_ansi(out).strip() or f"Removed {app}"}
raise Failure("action must be install or uninstall", 400)
def open_thing(body):
what = body.get("what")
alias = shlex.quote(FRAME)
if what == "terminal":
terminal(f"ssh {alias}")
return {"message": "Opened an SSH session in Terminal"}
if what in ("reboot", "poweroff", "suspend"):
# logind answers "challenge" over SSH, so sudo (and the password) is needed.
terminal(f"ssh -t {alias} sudo systemctl {what}")
return {"message": f"Confirm with the Developer Mode password in Terminal to {what}"}
if what == "steamlink":
return {"message": open_app("Steam Link", "https://store.steampowered.com/remoteplay")}
if what == "rdp":
return {"message": open_app("Windows App", "https://apps.apple.com/app/windows-app/id1295203466")}
if what == "sftp":
terminal(f"sftp {alias}")
return {"message": "Opened an SFTP session in Terminal"}
if what == "shots":
SHOTS_DIR.mkdir(parents=True, exist_ok=True)
subprocess.run(["open", str(SHOTS_DIR)])
return {"message": "Opened ~/Pictures/SteamFrame in Finder"}
raise Failure("unknown target", 400)
def android(body):
"""Android apps, each in its own persistent Lepton instance (frame_android.py)."""
action, pkg = body.get("action"), str(body.get("package", ""))
ensure_master()
try:
if action == "install":
m = frame_catalog.install(pkg)
return {"message": f"Installed {m['label']}. It's in the Steam library; launching it opens its own panel.", "app": m}
if action in ("launch", "stop"):
m = getattr(frame_android, action)(pkg)
return {"message": f"{'Launching' if action == 'launch' else 'Stopped'} {m['label']}"}
if action == "remove":
m = frame_android.remove(pkg, keep_data=bool(body.get("keepData")))
return {"message": f"Removed {m['label']}"}
if action == "probe":
r = frame_catalog.probe_and_report(pkg)
word = {"runs": "runs", "crashes": "crashed", "instance_failed": "didn't start"}.get(r["result"], r["result"])
return {"message": f"{pkg} {word}" + (f": {r['detail']}" if r.get("detail") else ""), "probe": r}
if action == "report":
# Any APK, not only catalogue or installed ones: package, did it work, how it was run.
r = frame_catalog.add_report(pkg, body.get("version"), rating=body.get("rating"),
notes=str(body.get("notes") or ""),
runtime=body.get("runtime") or "instance",
label=body.get("label"), source=body.get("source"))
name = r.get("label") or pkg
where = "" if frame_catalog.compat_db.shared() else " on this Mac"
return {"message": f"Saved your report for {name}{where}", "report": r}
except frame_android.FrameError as e:
raise Failure(str(e))
raise Failure("unknown action", 400)
# ---- Android display (wm size / wm density / font_scale over ADB) -----------
#
# Each running Lepton instance listens for ADB on the Frame (5555 is Lepton
# Development; own-instance apps get the next free port). ADB goes through a
# dedicated SSH forward that lives only for the request, like
# scripts/install-apk.sh, and is always torn down with an adb disconnect.
ADB_PORTS = range(5555, 5600)
SIZE_RE = re.compile(r"^(\d{3,4})x(\d{3,4})$")
DENSITY_RANGE = (120, 640)
WIDTH_RANGE, HEIGHT_RANGE = (640, 3840), (360, 2160)
FONT_RANGE = (0.5, 2.0)
KNOWN_LABELS = {"com.t3tools.t3code": "T3 Code", "org.fdroid.fdroid": "F-Droid"}
# One ADB session at a time: requests are rare, and it keeps adb's state simple.
_adb_lock = threading.Lock()
_live_tunnels = set() # ssh processes (ADB forwards, live video) to kill if the server stops mid-request
def adb_path():
for cand in (os.environ.get("ADB"), shutil.which("adb"), "/opt/homebrew/bin/adb",
str(Path.home() / ".homebrew/bin/adb"), "/usr/local/bin/adb"):
if cand and os.access(cand, os.X_OK):
return cand
raise Failure("adb missing on the Mac: brew install android-platform-tools", 500)
def adb(adb_bin, *args, timeout=20):
try:
r = subprocess.run([adb_bin, *args], capture_output=True, text=True,
errors="replace", timeout=timeout)
except subprocess.TimeoutExpired:
raise Failure(f"adb {' '.join(args[-2:])} timed out")
out = (r.stdout + r.stderr).strip()
if r.returncode != 0:
raise Failure(out or f"adb exited {r.returncode}")
return out
def free_local_port():
with socket.socket() as s:
s.bind(("127.0.0.1", 0))
return s.getsockname()[1]
class AdbTunnel:
"""SSH forwards from Mac loopback to Frame ADB ports, plus adb connections.
`with AdbTunnel([5555, 5557]) as t: t.shell(5555, "wm size")`. On exit it
disconnects adb and kills the ssh process, whatever happened inside.
"""
def __init__(self, ports):
self.remote = list(ports)
self.local = {}
self.proc = None
self.adb = adb_path()
def __enter__(self):
if not _adb_lock.acquire(timeout=60):
raise Failure("another Android display request is still running; try again", 503)
try:
self._open()
except BaseException:
self.__exit__(None, None, None)
raise
return self
def _open(self):
try:
self._forward()
except Failure:
# A local port picked by free_local_port() can be taken before ssh
# binds it (ExitOnForwardFailure turns that into an error): retry once.
self._stop_ssh()
self._forward()
self.failed = {}
for p in self.remote:
out = adb(self.adb, "connect", self.serial(p), timeout=15)
# adb connect exits 0 even when it fails; check what it says. Keep
# going so one stuck port doesn't hide the healthy instances.
if "connected to" not in out:
self.failed[p] = f"adb couldn't connect to Frame port {p}: {out}"
def _forward(self):
self.local = {p: free_local_port() for p in self.remote}
fwd = [a for p, lp in self.local.items() for a in ("-L", f"127.0.0.1:{lp}:127.0.0.1:{p}")]
# Its own connection (ControlPath=none), so killing it drops the forwards.
self.proc = _proc = subprocess.Popen(
["ssh", "-o", "BatchMode=yes", "-o", "ConnectTimeout=8", "-o", "ControlPath=none",
"-o", "ExitOnForwardFailure=yes", "-o", "ServerAliveInterval=5", "-N", *fwd, FRAME],
stdin=subprocess.DEVNULL, stdout=subprocess.DEVNULL, stderr=subprocess.PIPE)
_live_tunnels.add(_proc)
deadline = time.time() + 12
pending = set(self.local.values())
while pending:
if self.proc.poll() is not None:
err = self.proc.stderr.read().decode(errors="replace").strip()
raise Failure(f"ADB tunnel failed: {err or 'ssh exited ' + str(self.proc.returncode)}")
if time.time() > deadline:
raise Failure("ADB tunnel didn't come up within 12s")
for lp in list(pending):
try:
socket.create_connection(("127.0.0.1", lp), timeout=0.5).close()
pending.discard(lp)
except OSError:
pass
if pending:
time.sleep(0.1)
def serial(self, port):
return f"127.0.0.1:{self.local[port]}"
def shell(self, port, command, timeout=20):
if port in getattr(self, "failed", {}):
raise Failure(self.failed[port])
return adb(self.adb, "-s", self.serial(port), "shell", command, timeout=timeout)
def _stop_ssh(self):
proc, self.proc = self.proc, None
if not proc:
return
try:
if proc.poll() is None:
proc.terminate()
try:
proc.wait(5)
except subprocess.TimeoutExpired:
proc.kill()
proc.wait(5)
except OSError:
pass
finally:
_live_tunnels.discard(proc)
if proc.stderr:
proc.stderr.close()
def __exit__(self, *exc):
try:
# Tunnel first: it's what could outlive us. `adb disconnect` only
# talks to the local adb server, so it works without the tunnel.
self._stop_ssh()
for p in self.local:
try:
subprocess.run([self.adb, "disconnect", self.serial(p)], capture_output=True, timeout=10)
except (subprocess.TimeoutExpired, OSError):
pass
finally:
_adb_lock.release()
return False
DISPLAY_READ = "echo @@pkgs; pm list packages -3; echo @@size; wm size; echo @@density; wm density; " \
"echo @@font; settings get system font_scale"
def parse_display(out):
sec, parts = None, {}
for line in out.splitlines():
line = line.strip()
if line.startswith("@@"):
sec = line[2:]
parts[sec] = []
elif sec and line:
parts[sec].append(line)
def pick(lines, key):
for line in lines:
if line.lower().startswith(key) and ":" in line:
return line.split(":", 1)[1].strip()
return None
size, density = parts.get("size", []), parts.get("density", [])
font = (parts.get("font") or ["null"])[0]
try:
font_scale = None if font == "null" else float(font)
except ValueError:
font_scale = None
phys_d, over_d = pick(density, "physical density"), pick(density, "override density")
return {
"packages": sorted(l.split(":", 1)[1] for l in parts.get("pkgs", []) if l.startswith("package:")),
"physicalSize": pick(size, "physical size"),
"overrideSize": pick(size, "override size"),
"physicalDensity": int(phys_d) if phys_d and phys_d.isdigit() else None,
"overrideDensity": int(over_d) if over_d and over_d.isdigit() else None,
# null means never set, which Android treats as 1.0.
"fontScale": font_scale,
}
def lepton_ports():
"""Frame ADB ports (5555-5599) that are listening now, with container names and app labels."""
out = ssh("ss -ltnH; echo @@podman; podman ps --format '{{.Names}} {{.Labels.adb_port}}' 2>/dev/null; "
f"echo @@meta; for f in {frame_android.APPS_DIR}/*/meta.json; do [ -f \"$f\" ] && cat \"$f\" && echo @@m; done; true",
timeout=20)
listen, _, rest = out.partition("@@podman")
podman, _, meta = rest.partition("@@meta")
ports = set()
for line in listen.splitlines():
cols = line.split()
if len(cols) >= 4:
port = cols[3].rsplit(":", 1)[-1]
if port.isdigit() and int(port) in ADB_PORTS:
ports.add(int(port))
containers = {}
for line in podman.splitlines():
cols = line.split()
if len(cols) == 2 and cols[1].isdigit():
containers[int(cols[1])] = cols[0]
labels = dict(KNOWN_LABELS)
for chunk in meta.split("@@m"):
try:
m = json.loads(chunk)
labels[str(m["package"])] = str(m["label"])
except (ValueError, KeyError, TypeError):
pass
return sorted(ports), containers, labels
def android_displays():
ports, containers, labels = lepton_ports()
if not ports:
return {"instances": []}
instances = []
with AdbTunnel(ports) as t:
for p in ports:
item = {"port": p, "container": containers.get(p)}
try:
item.update(parse_display(t.shell(p, DISPLAY_READ)))
except Failure as e:
item["error"] = str(e)
item["labels"] = {pkg: labels[pkg] for pkg in item.get("packages", []) if pkg in labels}
instances.append(item)
return {"instances": instances}
def android_display(body):
port = body.get("port")
if type(port) is not int or port not in ADB_PORTS:
raise Failure(f"port must be an integer {ADB_PORTS.start}-{ADB_PORTS.stop - 1}", 400)
cmds = []
size = body.get("size")
if size is not None:
if size == "reset":
cmds.append("wm size reset")
else:
m = SIZE_RE.fullmatch(size) if isinstance(size, str) else None
if not m:
raise Failure("size must be WIDTHxHEIGHT (e.g. 2560x1440) or \"reset\"", 400)
w, h = int(m[1]), int(m[2])
if not (WIDTH_RANGE[0] <= w <= WIDTH_RANGE[1] and HEIGHT_RANGE[0] <= h <= HEIGHT_RANGE[1]):
raise Failure(f"size must be {WIDTH_RANGE[0]}-{WIDTH_RANGE[1]} wide and "
f"{HEIGHT_RANGE[0]}-{HEIGHT_RANGE[1]} high", 400)
cmds.append(f"wm size {w}x{h}")
density = body.get("density")
if density is not None:
if density == "reset":
cmds.append("wm density reset")
elif type(density) is int and DENSITY_RANGE[0] <= density <= DENSITY_RANGE[1]:
cmds.append(f"wm density {density}")
else:
raise Failure(f"density must be an integer {DENSITY_RANGE[0]}-{DENSITY_RANGE[1]} or \"reset\"", 400)
font = body.get("fontScale")
if font is not None:
if font == "reset":
# Applying a config change (e.g. the wm resets just before) writes
# font_scale=1.0 back asynchronously, so delete again once it settles.
cmds.append("settings delete system font_scale; sleep 1; settings delete system font_scale")
elif type(font) in (int, float) and FONT_RANGE[0] <= font <= FONT_RANGE[1]:
cmds.append(f"settings put system font_scale {round(float(font), 3):g}")
else:
raise Failure(f"fontScale must be a number {FONT_RANGE[0]}-{FONT_RANGE[1]} or \"reset\"", 400)
if not cmds:
raise Failure("nothing to change: give density, size or fontScale", 400)
ports, _, _ = lepton_ports()
if port not in ports:
raise Failure(f"no Lepton instance is listening on Frame port {port}", 404)
with AdbTunnel([port]) as t:
for c in cmds:
out = t.shell(port, c)
# wm prints usage or an exception on failure but may still exit 0.
if re.search(r"exception|error|usage", out, re.I):
raise Failure(f"{c}: {out}")
now = parse_display(t.shell(port, DISPLAY_READ))
now["port"] = port
return {"message": f"Port {port}: " + "; ".join(c.split(";")[0] for c in cmds), "display": now}
POST = {"/api/android/display": android_display, "/api/android": android,"/api/launch": launch, "/api/steam": steam, "/api/volume": set_volume, "/api/clipboard": clipboard,
"/api/flatpak": flatpak, "/api/open": open_thing, "/api/shots/save": save_shots}
# ---- HTTP ------------------------------------------------------------------
class Handler(BaseHTTPRequestHandler):
server_version = "FrameControl/1"
timeout = 60 # per socket operation, so a stalled client can't hold a thread
def log_message(self, fmt, *args):
sys.stderr.write("%s %s\n" % (self.command, fmt % args))
def local_request(self):
# Blocks DNS rebinding (Host) and cross-site form posts (custom header
# forces a CORS preflight, which this server never approves).
host = (self.headers.get("Host") or "").rsplit(":", 1)[0]
if host not in ("127.0.0.1", "localhost"):
self.send_json({"error": "forbidden host"}, 403)
return False
# All of /api/*, not just POST: an <img> on any website could otherwise
# trigger a headset capture and display it.
api = urlparse(self.path).path.startswith("/api/")
if (self.command == "POST" or api) and self.headers.get("X-Frame-UI") != "1":
self.send_json({"error": "missing X-Frame-UI header"}, 403)
return False
return True
def send_bytes(self, data, ctype, status=200, headers=()):
self.send_response(status)
self.send_header("Content-Type", ctype)
for name, value in headers:
self.send_header(name, value)
self.send_header("Content-Length", str(len(data)))
self.send_header("Cache-Control", "no-store")
# Nobody may frame the UI (clickjacking).
self.send_header("X-Frame-Options", "DENY")
self.send_header("Content-Security-Policy", "frame-ancestors 'none'")
self.end_headers()
self.wfile.write(data)
def send_json(self, obj, status=200):
self.send_bytes(json.dumps(obj).encode(), "application/json", status)
def do_GET(self):
if not self.local_request():
return
url = urlparse(self.path)
path = url.path
try:
if path in ("/", "/index.html"):
self.send_bytes((HERE / "index.html").read_bytes(), "text/html; charset=utf-8")
elif path == "/api/android":
ensure_master()
self.send_json({"apps": frame_android.list_apps()})
elif path == "/api/android/displays":
self.send_json(android_displays())
elif path == "/api/android/reports":
self.send_json({"reports": frame_catalog.recent_reports(),
"shared": frame_catalog.compat_db.shared()})
elif path == "/api/android/catalog":
self.send_json({"apps": frame_catalog.catalog()})
elif path == "/api/status":
self.send_json(status({}))
elif path == "/api/steam/owned":
self.send_json(steam_frame("owned"))
elif path == "/api/steam/search":
self.send_json(steam_search(url.query))
elif path == "/api/shots":
self.send_json(list_shots())
elif path == "/api/shots/image":
self.send_bytes(*shot_image(url.query))
elif path == "/api/stream":
self.stream_video(url.query)
elif path == "/api/screenshot" and parse_qs(url.query).get("view") == ["headset"]:
self.send_bytes(headset_view(), "image/png", headers=[("X-Capture-Source", "steamvr")])
elif path == "/api/screenshot":
self.send_bytes(ssh(SCREENSHOT, timeout=20, text=False), "image/png",
headers=[("X-Capture-Source", "gamescope")])
else:
self.send_json({"error": "not found"}, 404)
except Failure as e:
self.send_json({"error": str(e)}, e.status)
except Exception as e:
self.send_json({"error": f"{type(e).__name__}: {e}"}, 500)
def do_POST(self):
if not self.local_request():
return
path = urlparse(self.path).path
try:
if path == "/api/upload":
self.send_json(self.upload())
return
handler = POST.get(path)
if not handler:
self.send_json({"error": "not found"}, 404)
return
length = int(self.headers.get("Content-Length") or 0)
if not 0 <= length <= MAX_JSON:
raise Failure("request body too large", 413)
body = json.loads(self.rfile.read(length) or b"{}")
if not isinstance(body, dict):
raise Failure("request body must be a JSON object", 400)
self.send_json(handler(body))
except Failure as e:
self.send_json({"error": str(e)}, e.status)
except (ValueError, TypeError) as e:
self.send_json({"error": f"bad request: {e}"}, 400)
except Exception as e:
self.send_json({"error": f"{type(e).__name__}: {e}"}, 500)
def stream_video(self, query):
"""Raw H.264 of the headset view until the page disconnects (see stream_command)."""
global _stream_proc
remote = stream_command(query)
ensure_master()
# stderr goes to a file: nothing reads it while streaming, and a full
# pipe would stall ffmpeg. It's only read if the stream fails to start.
errors = tempfile.TemporaryFile()
proc = subprocess.Popen([*SSH, FRAME, remote], stdin=subprocess.PIPE,
stdout=subprocess.PIPE, stderr=errors)
try:
_live_tunnels.add(proc)
# One viewer at a time: a new stream (another tab, a reload) ends the last one.
with _stream_lock:
old, _stream_proc = _stream_proc, proc
if old and old.poll() is None:
old.terminate()
fd = proc.stdout.fileno()
# Nothing is sent until the first bytes arrive, so a failure to
# start still comes back as a JSON error.
ready, _, _ = select.select([fd], [], [], 20)
first = os.read(fd, 1 << 16) if ready else b""
if not first:
proc.kill()
proc.wait()
errors.seek(0)
err = strip_ansi(errors.read().decode(errors="replace")).strip()
raise Failure(err or "The headset view sent no video for 20 s")
chunk = first
try:
self.send_response(200)
self.send_header("Content-Type", "video/h264")
self.send_header("Cache-Control", "no-store")
self.send_header("X-Frame-Options", "DENY")
self.send_header("Content-Security-Policy", "frame-ancestors 'none'")
self.end_headers()
self.close_connection = True # the body ends when the connection does
while chunk:
self.wfile.write(chunk)
self.wfile.flush()
# A stalled headset view ends the stream rather than
# holding this thread (and the page) forever.
ready, _, _ = select.select([fd], [], [], STREAM_STALL)
chunk = os.read(fd, 1 << 16) if ready else b""
except OSError:
pass # the page stopped watching (or stopped reading); the body has started, so no JSON
finally:
if proc.poll() is None:
proc.terminate()
try:
proc.wait(timeout=5)
except subprocess.TimeoutExpired:
proc.kill()
proc.wait()
for f in (proc.stdin, proc.stdout, errors):
f.close()
_live_tunnels.discard(proc)
def upload(self):
"""Raw file body. X-Filename names it; X-Mode is 'push', 'apk' (install) or 'apkinfo' (read only)."""
name = os.path.basename(unquote(self.headers.get("X-Filename", "")))
mode = self.headers.get("X-Mode", "push")
length = int(self.headers.get("Content-Length") or 0)
if not name or name.startswith("."):
raise Failure("missing filename", 400)
if length <= 0 or length > MAX_UPLOAD:
raise Failure("empty or too-large upload", 400)
if mode in ("apk", "apkinfo") and not name.lower().endswith(".apk"):
raise Failure("APK install needs a .apk file", 400)
tmp = Path(tempfile.mkdtemp(prefix="frame-ui-"))
try:
dest = tmp / name
with open(dest, "wb") as f:
remaining = length
while remaining:
chunk = self.rfile.read(min(remaining, 1 << 20))
if not chunk:
raise Failure("upload interrupted", 400)
f.write(chunk)
remaining -= len(chunk)
if mode == "apkinfo":
# Read an APK for a report without installing it.
try:
info = frame_android.apk_info(str(dest))
except frame_android.FrameError as e:
raise Failure(str(e), 400)
info.pop("icon_png", None)
try:
frame_android.check_installable(info)
info["blocker"] = None
except frame_android.FrameError as e:
info["blocker"] = str(e)
return {"message": f"Read {info['label']} {info['version']}", "apk": info}
if mode == "apk":
ensure_master()
try:
m = frame_android.install(str(dest), source=name)
except frame_android.FrameError as e:
raise Failure(str(e), 400)
return {"message": f"Installed {m['label']} as its own app in the Steam library", "app": m}
return {"message": script("push.sh", str(dest))}
finally:
shutil.rmtree(tmp, ignore_errors=True)
def main():
ap = argparse.ArgumentParser(description=__doc__.splitlines()[0])
ap.add_argument("--port", type=int, default=int(os.environ.get("PORT", 47810)))
args = ap.parse_args()
httpd = ThreadingHTTPServer(("127.0.0.1", args.port), Handler)
signal.signal(signal.SIGTERM, lambda *_: (_ for _ in ()).throw(KeyboardInterrupt))
print(f"Frame Control on http://127.0.0.1:{args.port} (alias: {FRAME}; Ctrl-C to stop)", flush=True)
try:
httpd.serve_forever()
except KeyboardInterrupt:
pass
finally:
# The master was started with -N, so it stays up until told to exit.
subprocess.run([*MUX, "-O", "exit", FRAME], capture_output=True)
if _master and _master.poll() is None:
_master.terminate()
for proc in list(_live_tunnels): # ADB forwards and video streams cut off mid-way
if proc.poll() is None:
proc.terminate()
if __name__ == "__main__":
main()