server+ui: detect card removal passively and reflect it within 2s

The UI only noticed a removed card when some user action ran a real card
command (e.g. Check status); /api/status is a cached-state read that kept
returning the old card, and _handle_card_disconnect() did not clear
app.card/rs.

- start_card_monitor() registers a pyscard CardObserver for our reader;
  it only polls SCardGetStatusChange (no APDU, no connection, no extra
  process), and on removal sets server.card_present=False and calls
  _handle_card_disconnect() under _CARD_LOCK
- /api/status now exposes connected (session usable) and card_present
  (physically inserted) and masks card/profile/atr/selection when not
  connected; _CARD_CONNECTED is initialized from card presence instead of
  being unconditionally True
- the 2s UI poll includes /api/status; on disconnect it switches to the
  existing 'No card detected. Insert card and click Equip' state, or the
  new 'Card inserted — press Equip' hint when the card is back; the old
  _hadData heuristic is gone

Tests for the observer (filtering, removal, insertion) and the UI state
transitions. SW cache v90 -> v91.
This commit is contained in:
2026-09-12 13:21:33 +03:00
parent 7288c22830
commit 57eb412b6d
6 changed files with 228 additions and 16 deletions
+27 -11
View File
@@ -6400,6 +6400,7 @@ async function pysimStatusPoll() {
}
let _pysimPollTimer = null;
let _pysimLastConnected = null;
async function pysimPollToggle() {
const btn = document.getElementById('pli-pause-btn');
@@ -6435,27 +6436,41 @@ async function pysimPollStatusInit() {
} catch (e) { /* ignore */ }
}
function pysimCardStateUpdate(status) {
if (!status || typeof status.connected !== 'boolean') return;
const statusEl = document.getElementById('pysim-status');
if (status.connected === _pysimLastConnected) return;
_pysimLastConnected = status.connected;
if (status.connected) {
pysimSetConnected(true);
pysimRefresh();
return;
}
pysimSetConnected(false);
if (statusEl && statusEl.textContent.trim() !== '') {
if (status.card_present) {
statusEl.innerHTML = '<span class="text-amber-600">' + esc(t('Card inserted — press Equip')) + '</span>';
} else {
statusEl.innerHTML = '<span class="text-red-500">' + esc(t('No card detected. Insert card and click Equip card button')) + '</span>';
}
}
}
function pysimStartBackendPoll() {
if (_pysimPollTimer) clearInterval(_pysimPollTimer);
let _hadData = false;
_pysimLastConnected = null;
_pysimPollTimer = setInterval(async () => {
try {
const [log, stk, ps] = await Promise.all([
const [log, stk, ps, status] = await Promise.all([
pysimFetch('/api/proactive-log'),
pysimFetch('/api/stk-status'),
pysimFetch('/api/poll-status'),
pysimFetch('/api/status'),
]);
pysimUpdatePollUI(ps.enabled, ps.interval);
if (Array.isArray(log) && log.length > 0) _hadData = true;
if (_hadData && !ps.enabled && Array.isArray(log) && log.length === 0) {
_hadData = false;
const statusEl = document.getElementById('pysim-status');
if (statusEl && statusEl.textContent.trim() !== '') {
statusEl.innerHTML = '<span class="text-red-500">Card disconnected</span>';
}
}
pysimCardStateUpdate(status);
} catch (e) { /* ignore */ }
}, 5000);
}, 2000);
}
// ===== proactive command log =====
@@ -8746,6 +8761,7 @@ const LANG_RU = {
'pysim-blocked-hint': 'Браузер, вероятно, заблокировал доступ к локальному серверу карт. Разрешите доступ к локальной сети для этого сайта (Chrome/Edge/Vivaldi: Настройки сайта → Доступ к локальной сети → Разрешить). Также проверьте, что pysim-otaman-server запущен по адресу {url}.',
'pysim-unreachable-hint': 'Не удалось подключиться к серверу карт. Проверьте, что pysim-otaman-server запущен и адрес указан верно ({url}). Если эта страница открыта по HTTPS, также разрешите доступ к локальной сети в браузере (Chrome/Edge/Vivaldi: Настройки сайта → Доступ к локальной сети → Разрешить).',
'No card detected. Insert card and click Equip card button': 'Карта не обнаружена. Вставьте карту и нажмите Подключить карту',
'Card inserted — press Equip': 'Карта вставлена — нажмите «Подключить карту»',
'Checking...': 'Проверка...',
'Resetting...': 'Сброс...',
'Equipping...': 'Подключение...',
+1 -1
View File
@@ -1,4 +1,4 @@
const CACHE = 'otaman-v90';
const CACHE = 'otaman-v91';
const URLS = [
'index.html',
'help.html',
+77
View File
@@ -0,0 +1,77 @@
const { test } = require('node:test');
const assert = require('node:assert');
const fs = require('node:fs');
const path = require('node:path');
const html = fs.readFileSync(path.join(__dirname, '..', 'index.html'), 'utf8');
function extractFunc(src, name) {
const re = new RegExp('function\\s+' + name + '\\s*\\([^)]*\\)\\s*\\{');
const m = re.exec(src);
if (!m) throw new Error('function ' + name + ' not found');
let i = m.index + m[0].length - 1;
let depth = 0;
for (; i < src.length; i++) {
if (src[i] === '{') depth++;
else if (src[i] === '}') {
depth--;
if (depth === 0) break;
}
}
return src.slice(m.index, i + 1);
}
let code = 'var _pysimLastConnected = null;\n';
code += extractFunc(html, 'pysimCardStateUpdate') + '\n';
code += '\nglobalThis.esc = s => s;\n';
code += 'globalThis.t = s => s;\n';
eval(code);
function setup() {
const el = { textContent: 'status line', innerHTML: '' };
const calls = { connected: [], refresh: 0 };
globalThis.document = { getElementById: () => el };
globalThis.pysimSetConnected = v => calls.connected.push(v);
globalThis.pysimRefresh = () => { calls.refresh++; };
return { el, calls };
}
test('disconnect without card shows the no-card message', () => {
_pysimLastConnected = true;
const { el, calls } = setup();
pysimCardStateUpdate({ connected: false, card_present: false });
assert.deepStrictEqual(calls.connected, [false]);
assert.ok(el.innerHTML.includes('No card detected'), el.innerHTML);
});
test('disconnect with card present shows the Equip hint', () => {
_pysimLastConnected = true;
const { el } = setup();
pysimCardStateUpdate({ connected: false, card_present: true });
assert.ok(el.innerHTML.includes('Card inserted'), el.innerHTML);
});
test('unchanged state does not touch the UI again', () => {
_pysimLastConnected = false;
const { el, calls } = setup();
el.innerHTML = 'unchanged';
pysimCardStateUpdate({ connected: false, card_present: false });
assert.deepStrictEqual(calls.connected, []);
assert.strictEqual(el.innerHTML, 'unchanged');
});
test('reconnect restores the connected UI and refreshes', () => {
_pysimLastConnected = false;
const { calls } = setup();
pysimCardStateUpdate({ connected: true, card_present: true });
assert.deepStrictEqual(calls.connected, [true]);
assert.strictEqual(calls.refresh, 1);
});
test('payload without connected flag is ignored', () => {
_pysimLastConnected = null;
const { calls } = setup();
pysimCardStateUpdate({ reader: 'x' });
pysimCardStateUpdate(null);
assert.deepStrictEqual(calls.connected, []);
});
+6 -3
View File
@@ -12,7 +12,7 @@ from pySim.cards import UiccCardBase
from .shell import load_pysim_app
from . import fastinit
from .server import PysimHandler, StderrApduTracer, _LoggingApduTracer, VERSION, _send_terminal_profile, _DefaultProactiveHandler, _handle_proactive_chain, _send_status, _init_proactive_session, _timing_on, _tlog, _set_menu_timeout
from .server import PysimHandler, StderrApduTracer, _LoggingApduTracer, VERSION, _send_terminal_profile, _DefaultProactiveHandler, _handle_proactive_chain, _send_status, _init_proactive_session, _timing_on, _tlog, _set_menu_timeout, start_card_monitor
_server_start = 0
@@ -93,6 +93,8 @@ def main():
t_phase = time.time()
sl = mod.init_reader(opts, **kwargs)
_tlog('init_reader: %.0fms' % ((time.time() - t_phase) * 1000))
if getattr(sl, '_reader', None) is not None:
start_card_monitor(str(sl._reader))
scc = SimCardCommands(sl)
scc.cat_cla = '80' # UICC CLA default; overridden for SIM after init_card
scc._tp.proactive_handler = _DefaultProactiveHandler()
@@ -179,10 +181,11 @@ def main():
server.event_list = event_list
server.menu_active = False
server.stk_pending = None
# Set server reference for polling timer and mark card as connected
server.card_present = card is not None
# Set server reference for polling timer and mark the card session state
import pysim_otaman_server.server
pysim_otaman_server.server._server_ref = server
pysim_otaman_server.server._CARD_CONNECTED = True
pysim_otaman_server.server._CARD_CONNECTED = card is not None
if opts.poll_interval is not None:
pysim_otaman_server.server._set_poll_interval(opts.poll_interval)
# Auto-enable polling if card initialized successfully (unless interval is 0)
+55 -1
View File
@@ -11,6 +11,7 @@ from http.server import HTTPServer, BaseHTTPRequestHandler
from io import StringIO
from pySim.transport import ApduTracer, ProactiveHandler
from pySim.cards import UiccCardBase
from smartcard.CardMonitoring import CardMonitor, CardObserver
import gsm0338 # registers 'gsm03.38' codec
from construct import GreedyBytes
@@ -1034,6 +1035,48 @@ def _handle_card_disconnect():
_reset_proactive_log()
class _CardPresenceObserver(CardObserver):
"""Passive PC/SC presence watcher: pyscard's CardMonitor only polls
SCardGetStatusChange (no connection, no APDUs), so it can never interleave
with our APDU traffic. We only update flags and tear down card state."""
def __init__(self, reader_name):
self.reader_name = reader_name
def update(self, observable, handlers):
addedcards, removedcards = handlers
try:
for card in removedcards:
if str(getattr(card, 'reader', '')) == self.reader_name:
sys.stderr.write('CARD-WATCH: card removed from %s\n' % self.reader_name)
with _CARD_LOCK:
if _server_ref:
_server_ref.card_present = False
_handle_card_disconnect()
for card in addedcards:
if str(getattr(card, 'reader', '')) == self.reader_name:
sys.stderr.write('CARD-WATCH: card inserted into %s (press Equip)\n' % self.reader_name)
with _CARD_LOCK:
if _server_ref:
_server_ref.card_present = True
except Exception as e:
sys.stderr.write('CARD-WATCH error: %s\n' % e)
_card_presence_observer = None
def start_card_monitor(reader_name):
"""Start the process-wide pyscard monitor (one daemon thread, no process)
and register our reader's presence observer."""
global _card_presence_observer
if not reader_name:
return None
if _card_presence_observer is None:
_card_presence_observer = _CardPresenceObserver(reader_name)
CardMonitor().addObserver(_card_presence_observer)
return _card_presence_observer
def _init_proactive_session():
global _PROACTIVE_SESSION_START
_PROACTIVE_SESSION_START = time.time()
@@ -1526,9 +1569,19 @@ class PysimHandler(BaseHTTPRequestHandler):
lchan = rs.lchan[0] if rs else None
cur_file = lchan.selected_file if lchan else None
scc = app.card._scc if app and app.card else None
card = app.card if app else None
connected = bool(_CARD_CONNECTED and card is not None)
if not connected:
rs = None
lchan = None
cur_file = None
scc = None
card = None
data = {
'reader': str(self.server.sl) if self.server.sl else None,
'card': app.card.name if app and app.card else None,
'connected': connected,
'card_present': bool(getattr(self.server, 'card_present', False)),
'card': card.name if card else None,
'profile': str(rs.profile) if rs and rs.profile else None,
'app_ready': app is not None,
'adm_verified': rs.adm_verified if rs else False,
@@ -1672,6 +1725,7 @@ class PysimHandler(BaseHTTPRequestHandler):
self.server.scc = self.server.app.card._scc
self.server.scc.cat_cla = '80' if isinstance(self.server.card, UiccCardBase) else 'a0'
_CARD_CONNECTED = True
self.server.card_present = True
_poll_enable()
sm, el = _send_terminal_profile(self.server.scc, self.server.terminal_profile)
self.server.sim_menu = sm
+62
View File
@@ -0,0 +1,62 @@
#!/usr/bin/env python3
"""Tests for the passive PC/SC card-presence observer."""
import sys
import types
import unittest
from pathlib import Path
from unittest import mock
PROJECTS = Path(__file__).resolve().parents[2]
PY_SIM = PROJECTS / 'pysim'
if str(PY_SIM) not in sys.path:
sys.path.insert(0, str(PY_SIM))
import pysim_otaman_server.server as S
class FakeCard:
def __init__(self, reader):
self.reader = reader
class TestCardPresenceObserver(unittest.TestCase):
def setUp(self):
self.observer = S._CardPresenceObserver('Test Reader 00 00')
self.server = types.SimpleNamespace(card_present=True)
self.saved_ref = S._server_ref
S._server_ref = self.server
self.disconnects = []
self.patcher = mock.patch.object(
S, '_handle_card_disconnect',
side_effect=lambda: self.disconnects.append(True))
self.patcher.start()
def tearDown(self):
self.patcher.stop()
S._server_ref = self.saved_ref
def test_removal_of_our_reader_disconnects(self):
self.observer.update(None, ([], [FakeCard('Test Reader 00 00')]))
self.assertFalse(self.server.card_present)
self.assertEqual(len(self.disconnects), 1)
def test_removal_of_other_reader_ignored(self):
self.observer.update(None, ([], [FakeCard('Other Reader 00 00')]))
self.assertTrue(self.server.card_present)
self.assertEqual(self.disconnects, [])
def test_insertion_sets_card_present(self):
self.server.card_present = False
self.observer.update(None, ([FakeCard('Test Reader 00 00')], []))
self.assertTrue(self.server.card_present)
self.assertEqual(self.disconnects, [])
def test_missing_reader_attribute_is_ignored(self):
self.observer.update(None, ([], [types.SimpleNamespace()]))
self.assertTrue(self.server.card_present)
self.assertEqual(self.disconnects, [])
if __name__ == '__main__':
unittest.main()