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|
#!/usr/bin/env python3
"""
A television chosen once, then photos and a film sent to it.
Casting a photo or opening a film on a television chosen elsewhere is a claim
about four pieces at once: the cast button (cast-session.js), the lightbox
that follows it, the player that opens as a remote, and the native bridge the
page talks to. This renders the shipped `GroupPage` against a stub node and a
stub bridge that records what the page asks of it, and walks it as a reader
would: open an album, choose the television, page on, start a slideshow,
then open a film from Videos and stop casting from its remote.
A second case renders the same page with no bridge at all — a browser — where
no cast button may appear.
cast_session_probe.py Chrome, then Firefox
"""
import http.server
import json
import shutil
import socketserver
import subprocess
import sys
import tempfile
import threading
import time
from pathlib import Path
STATIC = Path(__file__).resolve().parents[2] / "src" / "meshbay_hub" / "static"
PORT = 8763
RECORDS = []
FINISHED = threading.Event()
socketserver.TCPServer.allow_reuse_address = True
FRAME = r"""<!doctype html><html><head><meta charset=utf-8>
<link rel="stylesheet" href="/style.css"></head><body>
<nav class="nav"><div class="nav-left"><a class="nav-brand" href="#/">MeshBay</a></div></nav>
<div class="layout"><main class="main"><div id="root"></div></main></div>
<script>
// A module that fails to load never reaches its own catch: say so.
const report = (error) => parent.postMessage({ error }, '*');
// Scripts only: the music case's stub track is three bytes no <audio>
// element can decode, which is expected and is not the page failing.
addEventListener('error', (e) => {
if (!(e instanceof ErrorEvent) && !(e.target && e.target.tagName === 'SCRIPT')) return;
report(`${e.message || 'load error'} ${e.filename || (e.target && e.target.src) || ''}`
+ `:${e.lineno || ''}`);
}, true);
addEventListener('unhandledrejection',
(e) => report(String((e.reason && e.reason.stack) || e.reason)));
const WITH_BRIDGE = !location.search.includes('nobridge');
const ENTRIES = [];
for (let i = 1; i <= 3; i++) {
ENTRIES.push({ id: 'p' + i, name: 'photo' + i + '.png', path: 'photos/Trip',
type: 'image', size: 1000, added_at: 1750000000 + i });
}
ENTRIES.push({ id: 'film', name: 'A.Film.mkv', display_title: 'A Film',
path: 'videos/films', type: 'video', duration: 6000, size: 1024, added_at: 1750000100 });
const ACK = {
is_node_admin: false, enabled_apps: ['video', 'photo'],
tmdb_enabled: true, tmdb_language: 'en-US',
video_directories: ['videos'], music_directories: [], photo_directories: ['photos'],
};
// A camera-sized picture, made here: 4000×3000, which the television must
// receive as 1440×1080.
let PHOTO = null;
async function photoBytes() {
if (PHOTO) return PHOTO;
const c = document.createElement('canvas');
c.width = 4000; c.height = 3000;
const g = c.getContext('2d');
g.fillStyle = '#3a7'; g.fillRect(0, 0, 4000, 3000);
const blob = await new Promise((r) => c.toBlob(r, 'image/png'));
PHOTO = new Uint8Array(await blob.arrayBuffer());
return PHOTO;
}
window.MeshBayCrypto = {
importGEK: async () => 'gek',
b64encode: (x) => String(x),
decryptChunkBin: async (_g, _f, _i, _n, ct) => ct,
};
window.MeshBayTransport = function () {
const self = {
connected: false, memberRole: 'member', supportsAppOps: true,
sessionKeys: null, gekRaw: 'k',
newNodeBundle: null, newNodeBundleRecovery: null,
async connect() { self.connected = true; return ACK; },
async fetchIndex() {
return { entries: ENTRIES, dirs: ['photos', 'videos'],
roots: [{ name: 'photos', available: true, writable: false, removable: false },
{ name: 'videos', available: true, writable: false, removable: false }] };
},
async fetchMediaMeta() { return { confidence: 0 }; },
// One chunk per photo: every photo is the same picture.
async fetchChunk() { return { nonce: 'n', ct: await photoBytes() }; },
addReconnectListener() { return () => {}; },
close() {},
};
return new Proxy(self, {
get(target, prop) {
if (prop in target) return target[prop];
if (typeof prop === 'string' && prop.startsWith('on')) return undefined;
if (typeof prop === 'symbol') return undefined;
return () => new Promise(() => {});
},
set(target, prop, value) { target[prop] = value; return true; },
});
};
// The native side, as the Electron preload and the Android shim present it,
// recording every cast call.
window.CALLS = [];
// What the stub receiver reports: the music case moves it along.
window.TV = { state: 'IDLE', position: 0, idle: null };
if (WITH_BRIDGE) {
let connected = false, v = 0;
const rec = (name, arg) => { CALLS.push({ name, arg }); };
window.meshbay = {
hubBase: () => '',
setLocale: async () => true,
capabilities: { lanCast: true, nodeAdmin: false, localFolders: false, nativeSave: false },
cast: {
start: async (o) => {
rec('start', o && { codec: o.codec });
return { url: 'http://tv/stream.mp4?t=x' };
},
push: async () => true,
stop: async () => { rec('stop'); return true; },
subtitle: async () => null,
finish: async () => true,
file: async (f) => {
let info = { type: f.type, size: f.bytes.length, title: f.title || null,
artist: f.artist || null, album: f.album || null, cover: !!f.cover };
if (f.type.startsWith('image/')) {
const bmp = await createImageBitmap(new Blob([f.bytes], { type: f.type }));
info = { ...info, width: bmp.width, height: bmp.height,
jpeg: f.bytes[0] === 0xff && f.bytes[1] === 0xd8 };
}
rec('file', info);
return { url: 'http://tv/file?t=x&v=' + (++v) };
},
status: async () => ({ active: true, url: null, chromecast: {
connected, playerState: TV.state, position: TV.position, idleReason: TV.idle } }),
scan: async () => { rec('scan'); return true; },
devices: async () => ({ devices: [{ id: 'tv1', name: 'Salon' }], scanning: false }),
chromecastConnect: async (o) => {
rec('connect', o); connected = true;
return { deviceName: 'Salon' };
},
chromecastReload: async (o) => { rec('reload', o); return { playerState: 'IDLE' }; },
chromecastDisconnect: async () => { rec('disconnect'); connected = false; return true; },
chromecastPause: async () => { rec('pause'); TV.state = 'PAUSED'; return {}; },
chromecastPlay: async () => { rec('play'); TV.state = 'PLAYING'; return {}; },
chromecastSeek: async (t) => { rec('seek', t); TV.position = t; return {}; },
},
};
}
</script>
<script type="module">
import { html, render } from '/vendor/htm-preact.js';
import { initLocale } from '/i18n.js';
import { GroupPage } from '/group-page.js';
const sleep = (ms) => new Promise((r) => setTimeout(r, ms));
const $ = (sel) => document.querySelector(sel);
const $$ = (sel) => [...document.querySelectorAll(sel)];
async function until(pred, what, tries = 200) {
for (let i = 0; i < tries; i++) { if (pred()) return; await sleep(50); }
throw new Error('timed out waiting for ' + what);
}
const calls = (name) => CALLS.filter((c) => c.name === name);
const files = () => calls('file').map((c) => c.arg);
// Files is always first; then the enabled apps in their registry order.
const videosTab = () => $$('.group-tab')[1];
const count = () => (($('.photo-lightbox-count') || {}).textContent || '').trim();
// The music bar, with a television already chosen: two tracks of one album.
async function music() {
const { MusicPlayerBar } = await import('/music-player.js');
const { castSession } = await import('/cast-session.js');
const out = {};
castSession.choose({ id: 'tv1', name: 'Salon' });
// Which hashes were fetched, so a cover can be traced to where it came from.
window.FETCHED = [];
const transport = { connected: true, async waitForReconnect() {},
async fetchChunk(id) {
FETCHED.push(id);
return { nonce: 'n', ct: new Uint8Array([1, 2, 3]) };
},
// The node's MusicBrainz answer: a cover for the other album only.
async fetchMusicMeta(id) {
CALLS.push({ name: 'musicMeta', arg: id });
return id === 't3' ? { confidence: 1, cover_thumb_hash: 'mb-cover' }
: { confidence: 0 };
} };
const getConnection = async () => ({ transport, gek: 'gek' });
// One has no cover of its own but Two, of the same album, has; Three is of
// another album whose only cover is the one the node found.
const track = (n, title, album, hash) => ({ id: 't' + n, name: title + '.mp3', size: 3,
groupId: 'g1', display_title: title, artist: 'Some Band', album, duration: 200,
thumb_hash: hash });
const queue = { tracks: [track(1, 'One', 'An Album', null), track(2, 'Two', 'An Album', 'cover2'),
track(3, 'Three', 'Another Album', null)], startIndex: 0, nonce: 1 };
render(html`<${MusicPlayerBar} getConnection=${getConnection} queue=${queue}
userPrefs=${{}} onClose=${() => {}} />`, document.getElementById('root'));
await until(() => calls('connect').length === 1, 'the first track on the television');
out.first = { file: files()[0], connect: calls('connect')[0].arg,
coverFetched: FETCHED.includes('cover2') };
TV.state = 'PLAYING'; TV.position = 12;
await until(() => ($$('.music-player-time')[0] || {}).textContent === '0:12',
"the television's clock in the bar");
out.barButton = !!$('.music-player-bar .cast-btn.casting');
out.volumeDisabled = $('.music-player-volume input').disabled;
$('.music-player-play').click();
await until(() => calls('pause').length === 1, 'pause on the television');
const slider = $('.music-player-seek input');
slider.value = '30';
slider.dispatchEvent(new Event('input', { bubbles: true }));
await until(() => calls('seek').length === 1, 'a seek on the television');
out.seek = calls('seek')[0].arg;
// The television finishes the track: the next one goes, once.
TV.state = 'IDLE'; TV.idle = 'FINISHED';
await until(() => calls('reload').length === 1, 'the next track on the television');
out.second = { file: files()[1], reload: calls('reload')[0].arg,
title: $('.music-player-title').textContent.trim() };
TV.state = 'PLAYING'; TV.idle = null; TV.position = 1;
await sleep(2500);
out.filesAfterSettling = files().length;
// Three: the cover comes from the node's answer for its album.
TV.state = 'IDLE'; TV.idle = 'FINISHED';
await until(() => calls('reload').length === 2, 'the third track on the television');
out.third = { file: files()[2], mbCover: FETCHED.includes('mb-cover'),
metaAsked: calls('musicMeta').map((c) => c.arg) };
TV.state = 'PLAYING'; TV.idle = null;
// Stopping the cast lets the television go.
await castSession.end();
await sleep(200);
out.afterStop = { disconnects: calls('disconnect').length,
barCasting: !!$('.music-player-bar .cast-btn.casting') };
parent.postMessage(out, '*');
}
(async () => {
const out = { bridge: !!window.meshbay };
if (location.search.includes('music')) {
try { await initLocale(); await music(); }
catch (err) {
parent.postMessage({ calls: CALLS, error: String((err && err.stack) || err) }, '*');
}
return;
}
try {
await initLocale();
render(html`<${GroupPage} groupId="g1" token="t" username="me" userId="u1"
group=${{ id: 'g1', name: 'a group', owner_username: 'me', is_admin: false }}
userPrefs=${{ default_tab: 'photo', media_page_size: '50' }} />`,
document.getElementById('root'));
await until(() => $('.photo-album-card'), 'the album card');
out.landingButton = !!$('.photo-toolbar .cast-btn');
$('.photo-album-card').click();
await until(() => $('.photo-album-bar'), 'the album');
out.albumButton = !!$('.photo-album-bar .cast-btn');
if (!window.meshbay) {
videosTab().click();
await until(() => $('.video-toolbar'), 'the videos toolbar');
out.videosButton = !!$('.video-toolbar .cast-btn');
parent.postMessage(out, '*');
return;
}
// Choose the television from the album: the first photo opens and goes.
$('.photo-album-bar .cast-btn').click();
await until(() => $$('.cast-menu .ctx-menu-item').some((b) => b.textContent.includes('Salon')),
'the receiver in the menu');
$$('.cast-menu .ctx-menu-item').find((b) => b.textContent.includes('Salon')).click();
await until(() => $('.photo-lightbox'), 'the lightbox to open on choosing');
await until(() => calls('connect').length === 1, 'the first photo to reach the television');
out.first = { count: count(), image: files()[0], connect: calls('connect')[0].arg,
lightboxCasting: !!$('.photo-lightbox .cast-btn.casting') };
// Next photo: the receiver is connected, so it is reloaded.
$('.photo-nav-next').click();
await until(() => calls('reload').length === 1, 'the second photo');
out.second = { count: count(), reload: calls('reload')[0].arg, images: files().length };
// Slideshow: on by itself to the last photo, then off.
const play = $$('.photo-lightbox .video-top-bar .video-close')
.find((b) => b.getAttribute('aria-pressed') !== null);
play.click();
await until(() => count() === '3 / 3', 'the slideshow to reach the last photo', 160);
await until(() => play.getAttribute('aria-pressed') === 'false', 'the slideshow to end', 160);
out.slideshow = { count: count(), images: files().length,
reloads: calls('reload').length };
// Close the lightbox; Videos shows the same television; a film opens as its remote.
$$('.photo-lightbox .video-top-bar .video-close').pop().click();
await until(() => !$('.photo-lightbox'), 'the lightbox to close');
videosTab().click();
await until(() => $('.video-toolbar'), 'the videos toolbar');
out.videosCasting = !!$('.video-toolbar .cast-btn.casting');
await until(() => $('.video-card'), 'the film card');
$('.video-card').click();
await until(() => $('.video-detail .admin-btn'), 'the film modal');
$('.video-detail .admin-btn').click();
await until(() => $('.video-remote'), 'the player as a remote');
out.remote = { device: $('.video-remote-device').textContent.trim(),
pickerOpen: !!$('.video-player-overlay .cast-picker') };
// Stop from the remote: forgotten for the session.
$$('.video-remote button').pop().click();
await until(() => !$('.video-remote'), 'the remote to go');
$$('.video-player-overlay .video-top-bar .video-close').pop().click();
await until(() => !$('.video-player-overlay'), 'the player to close');
await sleep(100);
out.afterStop = { videosCasting: !!$('.video-toolbar .cast-btn.casting'),
disconnects: calls('disconnect').length };
parent.postMessage(out, '*');
} catch (err) {
parent.postMessage({ ...out, calls: CALLS, error: String((err && err.stack) || err) }, '*');
}
})();
</script></body></html>"""
# Firefox headless runs a page only while taking its screenshot, which is taken
# once the page has loaded: an image that does not answer until the case has
# reported keeps it loading (the same hold as invitation_probe.py).
HOLD_TAG = '<img src="/hold" style="position:fixed;left:-4px;top:-4px;width:1px">'
PAGE = r"""<!doctype html><html><head><meta charset=utf-8></head>
<body style="margin:0">
<iframe src="/case{query}" style="width:1100px;height:800px;border:0"></iframe>
<script>
addEventListener('message', (e) => fetch('/log', { method: 'POST', body: JSON.stringify(e.data) }));
</script>{hold}</body></html>"""
class H(http.server.BaseHTTPRequestHandler):
def log_message(self, *a):
pass
def do_POST(self):
length = int(self.headers.get("Content-Length") or 0)
if self.path == "/log":
RECORDS.append(json.loads(self.rfile.read(length).decode()))
FINISHED.set()
else:
self.rfile.read(length)
self.send_response(204)
self.end_headers()
def _send(self, body: bytes, ctype: str) -> None:
self.send_response(200)
self.send_header("Content-Type", ctype)
self.send_header("Content-Length", str(len(body)))
self.end_headers()
self.wfile.write(body)
def do_GET(self):
path, _, query = self.path.partition("?")
if path == "/hold":
FINISHED.wait(90)
self._send(b"", "image/gif")
elif path == "/":
q = f"?{query.replace('engine=firefox', '').strip('&')}" if query else ""
hold = HOLD_TAG if "engine=firefox" in query else ""
page = PAGE.replace("{query}", q if q != "?" else "").replace("{hold}", hold)
self._send(page.encode(), "text/html; charset=utf-8")
elif path == "/case":
self._send(FRAME.encode(), "text/html; charset=utf-8")
elif path == "/v1/groups/g1/nodes":
self._send(b'{"nodes": [{"node_id": "n1"}]}', "application/json")
else:
asset = (STATIC / path.lstrip("/")).resolve()
if not str(asset).startswith(str(STATIC)) or not asset.is_file():
self.send_response(404)
self.end_headers()
return
self._send(asset.read_bytes(),
"text/css" if asset.suffix == ".css"
else "text/javascript" if asset.suffix == ".js"
else "application/octet-stream")
def browse(engine: str, query: str) -> dict | None:
RECORDS.clear()
FINISHED.clear()
sep = "&" if query else "?"
url = f"http://127.0.0.1:{PORT}/{query}{sep + 'engine=firefox' if engine == 'firefox' else ''}"
# Firefox is a snap here, and needs its profile under $HOME (invitation_probe.py).
snap = Path.home() / "snap" / "firefox" / "common"
parent = (str(snap if snap.is_dir() else Path.home()) if engine == "firefox" else None)
with tempfile.TemporaryDirectory(ignore_cleanup_errors=True, prefix="meshbay-probe-",
dir=parent) as profile:
if engine == "chrome":
cmd = ["google-chrome", "--headless=new", "--disable-gpu", "--no-sandbox",
f"--user-data-dir={profile}", "--window-size=1100,900", url]
else:
cmd = ["firefox", "--headless", "--profile", profile, "--window-size=1100,900",
"--screenshot", str(Path(profile) / "shot.png"), url]
proc = subprocess.Popen(cmd, stdout=subprocess.DEVNULL, stderr=subprocess.DEVNULL)
deadline = time.time() + 90
while not RECORDS and time.time() < deadline:
time.sleep(0.2)
proc.terminate()
try:
proc.wait(timeout=20)
except subprocess.TimeoutExpired:
proc.kill()
proc.wait()
return RECORDS[0] if RECORDS else None
def check(engine: str, cast: dict, plain: dict) -> list[str]:
bad = []
if "error" in cast:
return [f"{engine}: {cast['error']}"]
if not cast["landingButton"]:
bad.append("no cast button on the Photos landing")
if not cast["albumButton"]:
bad.append("no cast button in the album bar")
first = cast["first"]
if first["count"] != "1 / 3":
bad.append(f"choosing a television did not open the first photo: {first['count']}")
img = first["image"]
if not (img["type"] == "image/jpeg" and img["jpeg"] and img["width"] == 1440
and img["height"] == 1080):
bad.append(f"the photo did not leave as a 1440x1080 JPEG: {img}")
if first["connect"] != {"deviceId": "tv1", "mediaUrl": "http://tv/file?t=x&v=1",
"startAt": 0}:
bad.append(f"connect: {first['connect']}")
if not first["lightboxCasting"]:
bad.append("the lightbox's cast button does not say it is casting")
if cast["second"]["count"] != "2 / 3" or cast["second"]["reload"] != {
"mediaUrl": "http://tv/file?t=x&v=2", "startAt": 0}:
bad.append(f"next photo: {cast['second']}")
if cast["slideshow"]["count"] != "3 / 3" or cast["slideshow"]["images"] != 3:
bad.append(f"slideshow: {cast['slideshow']}")
if not cast["videosCasting"]:
bad.append("Videos does not show the television chosen in Photos")
if cast["remote"]["device"] != "Salon" or cast["remote"]["pickerOpen"]:
bad.append(f"the film did not open as the television's remote: {cast['remote']}")
if cast["afterStop"]["videosCasting"] or cast["afterStop"]["disconnects"] < 1:
bad.append(f"stopping from the remote: {cast['afterStop']}")
if "error" in plain:
bad.append(f"no bridge: {plain['error']}")
elif plain["landingButton"] or plain["albumButton"] or plain["videosButton"]:
bad.append(f"a cast button without a bridge: {plain}")
return [f"{engine}: {b}" for b in bad]
def check_music(engine: str, m: dict) -> list[str]:
if "error" in m:
return [f"{engine}: music: {m['error']}"]
bad = []
f = m["first"]["file"]
if not (f["type"] == "audio/mpeg" and f["title"] == "One" and f["artist"] == "Some Band"
and f["album"] == "An Album" and f["cover"] and m["first"]["coverFetched"]):
bad.append(f"the first track left without its album's cover: {m['first']}")
third = m["third"]
if not (third["file"]["title"] == "Three" and third["file"]["cover"] and third["mbCover"]):
bad.append(f"the node's cover did not reach the television: {third}")
if "t1" in third["metaAsked"] or "t2" in third["metaAsked"]:
bad.append(f"the node was asked for a cover a track already had: {third['metaAsked']}")
if m["first"]["connect"] != {"deviceId": "tv1", "mediaUrl": "http://tv/file?t=x&v=1",
"startAt": 0}:
bad.append(f"connect: {m['first']['connect']}")
if not m["barButton"]:
bad.append("the music bar's cast button does not say it is casting")
if not m["volumeDisabled"]:
bad.append("the volume slider still acts while casting")
if m["seek"] != 30:
bad.append(f"seek: {m['seek']}")
s = m["second"]
if s["file"]["title"] != "Two" or s["title"] != "Two" or s["reload"] != {
"mediaUrl": "http://tv/file?t=x&v=2", "startAt": 0}:
bad.append(f"the end of a track did not move the queue on: {s}")
if m["filesAfterSettling"] != 2:
bad.append(f"a finished track moved the queue on more than once: {m['filesAfterSettling']}")
if m["afterStop"]["disconnects"] < 1 or m["afterStop"]["barCasting"]:
bad.append(f"stopping: {m['afterStop']}")
return [f"{engine}: music: {b}" for b in bad]
def main() -> int:
failures = []
with socketserver.ThreadingTCPServer(("127.0.0.1", PORT), H) as srv:
threading.Thread(target=srv.serve_forever, daemon=True).start()
for engine in ("chrome", "firefox"):
if shutil.which("google-chrome" if engine == "chrome" else engine) is None:
print(f"{engine}: not installed, skipped")
continue
cast = browse(engine, "")
plain = browse(engine, "?nobridge")
music = browse(engine, "?music")
if cast is None or plain is None or music is None:
failures.append(f"{engine}: the page never reported")
continue
print(f"{engine}:", json.dumps({"photos-videos": cast, "music": music}, indent=1))
failures += check(engine, cast, plain)
failures += check_music(engine, music)
for f in failures:
print("FAIL", f, file=sys.stderr)
if not failures:
print("OK")
return 1 if failures else 0
if __name__ == "__main__":
sys.exit(main())
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