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pulse-triage[bot]
f2acf2f114
Keep unattended update containment separate from cancellation, host-stop diagnosis and rollback. Preserve known timer ownership, masks, consent, prior enabled and active states, and the original failure evidence; exercise copied commands with an isolated unit-manager double and a real timeout. Contract-Neutral: Documentation and confined recipe controls only; no installer, updater, service or recovery runtime behaviour changed. Change-source: pulse-maintainer
209 lines
10 KiB
Python
209 lines
10 KiB
Python
#!/usr/bin/env python3
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"""Exercise the copied timer-containment commands against a fake unit manager.
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No service, updater, host, credential or backup is touched. These controls prove
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the documented command scope and bounded reads, not installed update recovery.
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"""
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import json
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import os
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from pathlib import Path
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import re
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import shutil
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import signal
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import subprocess
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import tempfile
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import time
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import unittest
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ROOT = Path(__file__).resolve().parents[2]
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HEADING = "### Pause further unattended attempts without stopping Pulse\n"
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PROPERTIES = ["--property=LoadState", "--property=ActiveState",
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"--property=UnitFileState", "--property=Triggers"]
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MANAGER = r'''#!/usr/bin/python3
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import json, os, signal, sys, time
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from pathlib import Path
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args = sys.argv[1:]
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name = Path(sys.argv[0]).name
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with Path(os.environ['CALLS']).open('a') as output:
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output.write(json.dumps({'name': name, 'args': args}) + '\n')
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if name == 'sudo':
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assert args[0] == 'systemctl', 'Unexpected administrative command'
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os.execvp(args[0], args)
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assert args[0] in ('show', 'disable'), 'Unexpected manager mutation'
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timer = args[1] if args[0] == 'show' else args[-1]
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assert timer == os.environ['TIMER'], 'Wrong timer or a non-timer unit'
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assert timer.endswith('-update.timer'), 'Not the update timer'
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state_path = Path(os.environ['STATE'])
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state = json.loads(state_path.read_text())
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if args[0] == 'show':
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assert args[2:] == ['--property=LoadState', '--property=ActiveState',
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'--property=UnitFileState', '--property=Triggers']
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if os.environ.get('HANG') == 'yes':
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# Verify the copied reader's kill deadline, not just its normal exit.
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signal.signal(signal.SIGTERM, signal.SIG_IGN)
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time.sleep(30)
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if os.environ.get('READ_EXIT'):
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print('Unit state read failed', file=sys.stderr)
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sys.exit(int(os.environ['READ_EXIT']))
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for field in ('LoadState', 'ActiveState', 'UnitFileState', 'Triggers'):
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print(field + '=' + state[field])
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else:
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assert args == ['disable', '--now', timer], 'Unexpected manager mutation'
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if os.environ.get('DISABLE_EXIT'):
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print('Timer pause not confirmed', file=sys.stderr)
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sys.exit(int(os.environ['DISABLE_EXIT']))
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state['ActiveState'] = 'inactive'
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if state['UnitFileState'] != 'masked':
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state['UnitFileState'] = 'disabled'
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state_path.write_text(json.dumps(state))
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'''
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def guide_section():
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text = (ROOT / "docs/AUTO_UPDATE.md").read_text(encoding="utf-8")
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return text.split(HEADING, 1)[1].split("\n### ", 1)[0]
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class ServerUpdateContainmentDocsTest(unittest.TestCase):
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def recipes(self, timer="pulse-update.timer"):
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blocks = re.findall(r"```bash\n(.*?)```", guide_section(), re.S)
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self.assertEqual(len(blocks), 2, "Only a bounded state read and timer pause")
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return [block.replace("pulse-update.timer", timer) for block in blocks]
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def exercise(self, steps, *, timer="pulse-update.timer", **settings):
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with tempfile.TemporaryDirectory() as temporary:
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fixture = Path(temporary)
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tools = fixture / "tools"
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tools.mkdir()
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for name in ("systemctl", "sudo"):
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path = tools / name
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path.write_text(MANAGER, encoding="utf-8")
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path.chmod(0o700)
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# Use real coreutils timeout; no command can reach a real manager.
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timeout = shutil.which("timeout")
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self.assertIsNotNone(timeout, "The documented bounded reader needs timeout")
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(tools / "timeout").symlink_to(timeout)
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state = {
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"LoadState": "loaded", "ActiveState": "active",
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"UnitFileState": "enabled", "Triggers": timer.replace(".timer", ".service"),
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"PulseService": "active", "UpdaterService": "active", "Host": "running",
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"Backups": "preserved", "PrivateEnvironment": "fixture-secret-never-print",
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}
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state.update(settings.pop("state", {}))
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state_path = fixture / "state.json"
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state_path.write_text(json.dumps(state))
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calls = fixture / "calls.jsonl"
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env = dict(os.environ, PATH=str(tools), TIMER=timer,
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STATE=str(state_path), CALLS=str(calls), **settings)
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results = []
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for step in steps:
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result = subprocess.run(["/bin/bash", "-c", step], env=env,
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capture_output=True, text=True, timeout=9)
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self.assertNotIn(state["PrivateEnvironment"], result.stdout + result.stderr)
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results.append(result)
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if result.returncode:
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break # A failed/uncertain action is not silently replayed.
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commands = [json.loads(line) for line in calls.read_text().splitlines()]
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return results, commands, state, json.loads(state_path.read_text())
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def test_pause_and_readback_touch_only_the_known_timer(self):
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for timer in ("pulse-update.timer", "pulse-backend-update.timer", "custom-pulse-update.timer"):
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with self.subTest(timer=timer):
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read, pause = self.recipes(timer)
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results, calls, before, after = self.exercise([read, pause, read], timer=timer)
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self.assertEqual([r.returncode for r in results], [0, 0, 0])
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self.assertIn("ActiveState=active", results[0].stdout)
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self.assertIn("UnitFileState=enabled", results[0].stdout)
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self.assertIn("ActiveState=inactive", results[-1].stdout)
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self.assertIn("UnitFileState=disabled", results[-1].stdout)
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self.assertEqual(calls, [
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{"name": "systemctl", "args": ["show", timer] + PROPERTIES},
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{"name": "sudo", "args": ["systemctl", "disable", "--now", timer]},
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{"name": "systemctl", "args": ["disable", "--now", timer]},
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{"name": "systemctl", "args": ["show", timer] + PROPERTIES},
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])
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for field in ("PulseService", "UpdaterService", "Host", "Backups", "PrivateEnvironment"):
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self.assertEqual(after[field], before[field], field)
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def test_masked_and_disabled_timers_are_not_enabled_or_unmasked(self):
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read, pause = self.recipes()
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for unit_state in ("masked", "disabled"):
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with self.subTest(unit_state=unit_state):
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results, calls, before, after = self.exercise(
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[read, pause, read], state={"UnitFileState": unit_state, "ActiveState": "inactive"})
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self.assertEqual([r.returncode for r in results], [0, 0, 0])
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self.assertEqual(after, before)
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self.assertFalse(any("enable" in c["args"] or "unmask" in c["args"] for c in calls))
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def test_failed_read_does_not_continue_to_a_mutation(self):
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read, pause = self.recipes()
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results, calls, before, after = self.exercise([read, pause], READ_EXIT="1")
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self.assertEqual([r.returncode for r in results], [1])
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self.assertEqual(len(calls), 1)
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self.assertEqual(after, before)
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def test_failed_pause_is_not_hidden_or_replayed(self):
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_, pause = self.recipes()
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results, calls, before, after = self.exercise([pause], DISABLE_EXIT="5")
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self.assertEqual([r.returncode for r in results], [5])
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self.assertEqual(len(calls), 2)
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self.assertEqual(after, before)
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self.assertIn("not confirmed", results[0].stderr)
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def test_stalled_reader_has_a_kill_deadline(self):
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read, pause = self.recipes()
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start = time.monotonic()
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results, calls, before, after = self.exercise([read, pause], HANG="yes")
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# subprocess preserves SIGKILL as a negative return code when bash
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# execs its final timeout command; an intervening shell reports 137.
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self.assertIn(results[0].returncode, (124, 137, -signal.SIGKILL))
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self.assertLess(time.monotonic() - start, 8)
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self.assertEqual(len(calls), 1)
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self.assertEqual(after, before)
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def test_absent_timer_and_unknown_identity_require_a_stop_not_a_fallback(self):
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read, _ = self.recipes()
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results, calls, before, after = self.exercise(
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[read], state={"LoadState": "not-found", "ActiveState": "inactive", "UnitFileState": ""})
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self.assertEqual(results[0].returncode, 0)
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self.assertIn("LoadState=not-found", results[0].stdout)
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self.assertEqual(len(calls), 1)
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self.assertEqual(after, before)
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text = " ".join(guide_section().split())
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for phrase in ("identity is unknown, stop here", "not an inactive timer",
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"do not try every matching unit", "runtime-enabled",
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"do not substitute an unbounded reader", "A name alone does not establish ownership"):
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self.assertIn(phrase, text)
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def test_guidance_preserves_evidence_and_separately_recorded_restore_state(self):
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text = " ".join(guide_section().split())
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for phrase in (
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"containment, not rollback or a fix", "does not cancel an updater already running",
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"prevent a manual or in-app update", "inside its LXC", "not on the Proxmox host",
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"legacy installations", "pulse-backend-update.timer", "actual known timer name",
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"starting and intended versions", "time and timezone", "any recovery already performed",
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"version at failure", "A verified signature is not a completed install or rollback",
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"`Broken pipe` does not explain a host stop", "later boot does not supply its time or cause",
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"already available", "keep unknowns unknown", "Do not repeat the update",
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"delete rollback backups", "do not assume the schedule was paused",
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"enable only if previously enabled", "start only if previously active",
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"Do not unmask a unit", "create a second schedule", "does not undo the saved",
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"next stable update", "independent monitoring and notifications",
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):
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with self.subTest(phrase=phrase):
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self.assertIn(phrase, text)
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def test_shipped_doc_is_the_same_and_pause_never_edits_update_consent(self):
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source = (ROOT / "docs/AUTO_UPDATE.md").read_bytes()
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self.assertEqual(source, (ROOT / "frontend-modern/public/docs/AUTO_UPDATE.md").read_bytes())
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for recipe in self.recipes():
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self.assertNotRegex(recipe, r"\b(?:sed|tee|rm|cp|mv|restart|reset-failed|enable|unmask)\b")
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self.assertNotIn("system.json", recipe)
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if __name__ == "__main__":
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unittest.main()
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