- Multi-tab: browser_new_page / browser_list_pages / browser_switch_page / browser_close_page in playwright_mcp.py; each new page gets a fresh Playwright context, so cookies and storage are isolated between pages. Single-page tools act on the current page; switching to a missing index is an error, not a crash; closing the last page is an error (use browser_close). - Navigation allowlist: BROWSER_ALLOWED_HOSTS (comma list, leading-dot suffix match, case/port-insensitive) checked in _check_allowed_url before launching Chromium; unset (or empty) means no check, the old behaviour. file:// always allowed; localhost/127.0.0.1 have no special treatment. - Close cleanup: browser_close closes all pages and best-effort removes cwd browser-live.png / browser-live.json; custom screenshot files are untouched. list_pages needs no launch. - Egress filter: 10 programming-source Tinyproxy BASIC rules (python.org, nodejs.org, go.dev, pkg.go.dev, rust-lang.org, developer.mozilla.org, crates.io, stackoverflow.com, cve.mitre.org, nvd.nist.gov); already-present github.com / pypi.org / npmjs.org not duplicated; searx.diante.me stays exact-only, no diante.me wildcard. - Allowlist worker wiring: _docker_task_context now passes a set, non-empty BROWSER_ALLOWED_HOSTS from the worker env into [mcp_servers.playwright.env] in the tenant config, so the MCP process actually sees it (container -e alone does not reach MCP subprocesses, 2026-10-30). Unset/empty writes nothing and never overwrites; the value never goes into logs; it is not added to the websearch env block or the container env. ensure_playwright_mcp_env now returns False without rewriting when the result would be identical (canonical join: one blank line before the block), so a second prep leaves an unchanged tenant config alone; other sections untouched. - Skill + docs: browser-automation SKILL.md multi-tab/allowlist section; docs/platform-browser.md comparison doc (new file). - Tests (mock/fake only, no network, no real Chromium, no real credentials): cloud.tests.test_playwright + cloud.tests.test_websearch_worker, 48 tests OK, including 6 new wiring tests (switch off passes no variable, switch on reaches MCP env verbatim, empty never written, old-tenant merge idempotent + no-rewrite, ensure no-op when identical, allowlist enforces only after wiring). - NOT done (see PR body): no persistent profile, no credential vault, no approval card, no CAPTCHA bypass, in-page link navigation does not pass the allowlist, no real-Chromium live verification, host tinyproxy filter not reloaded.
443 lines
19 KiB
Python
443 lines
19 KiB
Python
"""Worker wiring for web search MCP: tenant seeding + egress filter.
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No Docker, no network: _tenant_dirs runs against temp dirs, and the
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egress check only reads the repo filter file.
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"""
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import os
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import re
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import sys
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import tempfile
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import unittest
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from pathlib import Path
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try:
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from cloud.server import init_db
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from cloud.worker import Worker
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except ImportError:
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sys.path.insert(0, str(Path(__file__).resolve().parents[2]))
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from cloud.server import init_db
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from cloud.worker import Worker
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REPO_ROOT = Path(__file__).resolve().parents[2]
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class WorkerWebsearchTestCase(unittest.TestCase):
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def setUp(self):
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self.tmp = tempfile.TemporaryDirectory()
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self.db_path = os.path.join(self.tmp.name, "control.db")
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init_db(self.db_path)
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self.template_home = os.path.join(self.tmp.name, "tpl-home")
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os.makedirs(self.template_home)
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open(os.path.join(self.template_home, "config.toml"),
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"w").write('[model_provider.xcmapi]\n'
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'base_url="https://xcmapi.org/v1"\n')
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self.template_repo = os.path.join(self.tmp.name, "tpl-repo")
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os.makedirs(os.path.join(self.template_repo, ".git"))
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open(os.path.join(self.template_repo, "sample.py"),
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"w").write("def add(a, b):\n return a + b\n")
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def tearDown(self):
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self.tmp.cleanup()
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def _worker(self, **kwargs):
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kwargs.setdefault("env", {"XCM_API_KEY": "test-placeholder"})
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kwargs.setdefault("tenants_root",
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os.path.join(self.tmp.name, "tenants"))
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kwargs.setdefault("tenant_template_home", self.template_home)
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kwargs.setdefault("tenant_template_repo", self.template_repo)
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kwargs.setdefault("tenant_isolation", True)
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return Worker(self.db_path, "/fake/host.py", **kwargs)
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def test_flag_off_is_old_behaviour(self):
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worker = self._worker()
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self.assertFalse(worker.websearch_mcp)
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dirs = worker._tenant_dirs("projA")
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config = open(os.path.join(dirs["codex_home"],
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"config.toml")).read()
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self.assertNotIn("[mcp_servers.websearch]", config)
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self.assertFalse(os.path.exists(
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os.path.join(dirs["codex_home"], "websearch_mcp.py")))
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def test_flag_on_seeds_container_path_and_scripts(self):
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worker = self._worker(websearch_mcp=True)
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dirs = worker._tenant_dirs("projA")
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home = dirs["codex_home"]
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config = open(os.path.join(home, "config.toml")).read()
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self.assertIn("[mcp_servers.websearch]", config)
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# Container path, not the host temp path: this config is
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# read inside the task container, where the tenant home is
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# mounted at /var/lib/codex-app-server/codex-home.
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self.assertIn("/var/lib/codex-app-server/codex-home/"
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"websearch_mcp.py", config)
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self.assertNotIn(self.tmp.name, config)
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self.assertTrue(os.path.exists(
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os.path.join(home, "websearch.py")))
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self.assertTrue(os.path.exists(
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os.path.join(home, "websearch_mcp.py")))
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# The copied MCP script is the real one (not a stub).
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script = open(os.path.join(home, "websearch_mcp.py")).read()
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self.assertIn("web_search", script)
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self.assertIn("web_fetch", script)
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def test_old_tenant_merges_on_next_task(self):
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worker = self._worker()
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dirs = worker._tenant_dirs("projA")
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config_path = os.path.join(dirs["codex_home"], "config.toml")
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self.assertNotIn("[mcp_servers.websearch]",
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open(config_path).read())
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# Flag flips on later (deploy enables it): next task's
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# _tenant_dirs must merge, not require a new project.
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worker2 = self._worker(websearch_mcp=True)
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worker2._tenant_dirs("projA")
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config = open(config_path).read()
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self.assertIn("[mcp_servers.websearch]", config)
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self.assertIn("xcmapi.org", config)
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self.assertEqual(config.count("[mcp_servers.websearch]"), 1)
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# Third call stays idempotent.
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worker2._tenant_dirs("projA")
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config = open(config_path).read()
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self.assertEqual(config.count("[mcp_servers.websearch]"), 1)
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class DockerEnvTestCase(unittest.TestCase):
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def setUp(self):
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self.tmp = tempfile.TemporaryDirectory()
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self.db_path = os.path.join(self.tmp.name, "control.db")
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init_db(self.db_path)
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def tearDown(self):
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self.tmp.cleanup()
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def _docker_context(self):
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worker = Worker(self.db_path, "/fake/host.py",
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env={"XCM_API_KEY": "test-placeholder"},
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tenant_isolation=False, egress_proxy_port=None)
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return worker._docker_task_context({"project_id": "projA"})
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def test_searxng_url_passes_into_container_env(self):
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from unittest import mock
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with mock.patch.dict(os.environ,
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{"SEARXNG_URL": "http://searx.diante.me"}):
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ok, _, _, env, err = self._docker_context()
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self.assertTrue(ok)
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self.assertIsNone(err)
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self.assertEqual(env.get("SEARXNG_URL"), "http://searx.diante.me")
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def test_no_search_env_means_no_extra_env(self):
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from unittest import mock
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with mock.patch.dict(os.environ, {}, clear=False):
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for k in ("SEARXNG_URL", "PERPLEXITY_API_KEY", "EXA_API_KEY",
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"TAVILY_API_KEY", "BRAVE_API_KEY"):
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os.environ.pop(k, None)
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ok, _, _, env, err = self._docker_context()
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self.assertTrue(ok)
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self.assertIsNone(err)
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self.assertIsNone(env)
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class EgressFilterTestCase(unittest.TestCase):
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def test_search_domains_present_in_basic_form(self):
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lines = open(REPO_ROOT / "deploy" / "egress" /
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"tinyproxy-filter").read().splitlines()
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entries = [ln for ln in lines
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if ln and not ln.startswith("#")]
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# No extended-regex syntax in any entry: + ? | and bare
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# parens are literal in BASIC and would break the allowlist.
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for entry in entries:
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self.assertNotIn("+", entry)
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self.assertNotIn("?", entry)
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self.assertNotIn("|", entry)
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self.assertNotIn("(", entry.replace("\\(", ""))
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self.assertNotIn(")", entry.replace("\\)", ""))
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expected = [
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r"^\(.*\.\)*perplexity\.ai$",
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r"^\(.*\.\)*exa\.ai$",
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r"^\(.*\.\)*tavily\.com$",
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r"^\(.*\.\)*search\.brave\.com$",
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r"^\(.*\.\)*duckduckgo\.com$",
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r"^searx\.diante\.me$",
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]
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for want in expected:
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self.assertIn(want, entries, "missing filter entry: %s" % want)
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def test_platform_browser_programming_domains(self):
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lines = open(REPO_ROOT / "deploy" / "egress" /
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"tinyproxy-filter").read().splitlines()
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entries = [ln for ln in lines
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if ln and not ln.startswith("#")]
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expected = [
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r"^\(.*\.\)*python\.org$",
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r"^\(.*\.\)*nodejs\.org$",
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r"^\(.*\.\)*go\.dev$",
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r"^\(.*\.\)*pkg\.go\.dev$",
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r"^\(.*\.\)*rust-lang\.org$",
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r"^\(.*\.\)*developer\.mozilla\.org$",
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r"^\(.*\.\)*crates\.io$",
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r"^\(.*\.\)*stackoverflow\.com$",
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r"^\(.*\.\)*cve\.mitre\.org$",
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r"^\(.*\.\)*nvd\.nist\.gov$",
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]
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for want in expected:
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self.assertIn(want, entries, "missing filter entry: %s" % want)
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# Already-present programming domains are NOT duplicated.
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for already in (r"^\(.*\.\)*github\.com$",
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r"^\(.*\.\)*pypi\.org$",
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r"^\(.*\.\)*npmjs\.org$"):
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self.assertEqual(entries.count(already), 1,
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"duplicated filter entry: %s" % already)
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# Control-plane guard: searx stays exact-only, and no
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# diante.me wildcard may appear (it would open api.diante.me).
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self.assertIn(r"^searx\.diante\.me$", entries)
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self.assertNotIn(r"^\(.*\.\)*diante\.me$", entries)
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def test_platform_browser_filter_matching_semantics(self):
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# Translate POSIX BASIC group syntax to Python regex and
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# check the subdomain anchoring the comments promise.
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lines = open(REPO_ROOT / "deploy" / "egress" /
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"tinyproxy-filter").read().splitlines()
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entries = [ln for ln in lines
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if ln and not ln.startswith("#")]
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def matches(domain):
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for entry in entries:
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py = entry.replace("\\(", "(").replace("\\)", ")")
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if re.match(py, domain):
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return True
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return False
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# Subdomain coverage via the apex rules.
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self.assertTrue(matches("docs.python.org"))
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self.assertTrue(matches("docs.rust-lang.org"))
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self.assertTrue(matches("developer.mozilla.org"))
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self.assertTrue(matches("pkg.go.dev"))
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# Anchoring: lookalikes and suffix tricks must not match.
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self.assertFalse(matches("evilpython.org"))
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self.assertFalse(matches("python.org.evil.com"))
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self.assertFalse(matches("notstackoverflow.com"))
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# Fail-closed: control plane and out-of-scope categories
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# (shopping, social, mail, video) open no rule.
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self.assertFalse(matches("api.diante.me"))
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self.assertFalse(matches("www.amazon.com"))
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self.assertFalse(matches("www.youtube.com"))
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self.assertFalse(matches("mail.google.com"))
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class PlaywrightAllowlistWiringTestCase(unittest.TestCase):
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"""BROWSER_ALLOWED_HOSTS: worker env -> MCP env wiring.
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No Docker, no network, no real Chromium: _docker_task_context
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runs against temp tenant dirs with a fake executor whose
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ensure_network always succeeds, and the MCP-side enforcement
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is checked through _allowed_hosts/_check_allowed_url (the same
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entry points Browser.navigate uses), not a launched browser.
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Values here are test placeholders, never real credentials.
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"""
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def setUp(self):
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self.tmp = tempfile.TemporaryDirectory()
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self.db_path = os.path.join(self.tmp.name, "control.db")
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init_db(self.db_path)
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self.template_home = os.path.join(self.tmp.name, "tpl-home")
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os.makedirs(self.template_home)
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open(os.path.join(self.template_home, "config.toml"),
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"w").write('[model_provider.xcmapi]\n'
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'base_url="https://xcmapi.org/v1"\n')
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self.template_repo = os.path.join(self.tmp.name, "tpl-repo")
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os.makedirs(os.path.join(self.template_repo, ".git"))
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open(os.path.join(self.template_repo, "sample.py"),
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"w").write("def add(a, b):\n return a + b\n")
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def tearDown(self):
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self.tmp.cleanup()
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def _worker(self):
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from types import SimpleNamespace
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fake_executor = SimpleNamespace(
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ensure_network=lambda network: True)
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return Worker(self.db_path, "/fake/host.py",
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env={"XCM_API_KEY": "test-placeholder"},
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tenants_root=os.path.join(self.tmp.name,
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"tenants"),
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tenant_template_home=self.template_home,
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tenant_template_repo=self.template_repo,
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tenant_isolation=True, playwright_mcp=True,
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executor=fake_executor)
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def _context(self, worker):
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return worker._docker_task_context({"project_id": "projA"})
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def _config(self, worker):
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home = worker._tenant_dirs("projA")["codex_home"]
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return open(os.path.join(home, "config.toml")).read()
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def _env_block(self, config):
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import json
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block = {}
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in_block = False
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for line in config.splitlines():
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stripped = line.strip()
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if stripped == "[mcp_servers.playwright.env]":
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in_block = True
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continue
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if in_block:
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if stripped.startswith("["):
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break
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if "=" in stripped:
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key, raw = stripped.split("=", 1)
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block[key.strip()] = json.loads(raw.strip())
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return block
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def _drop_ambient(self):
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# mock.patch.dict only overlays: drop any search/allowlist
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# keys the ambient environment may carry so each case sees
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# exactly the env it declares (pops are restored on exit).
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for key in ("SEARXNG_URL", "SEARXNG_ENGINES",
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"PERPLEXITY_API_KEY", "EXA_API_KEY",
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"TAVILY_API_KEY", "BRAVE_API_KEY"):
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os.environ.pop(key, None)
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def test_switch_off_passes_no_variable(self):
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from unittest import mock
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worker = self._worker()
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with mock.patch.dict(os.environ, {}, clear=False):
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os.environ.pop("BROWSER_ALLOWED_HOSTS", None)
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self._drop_ambient()
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ok, _, _, env, err = self._context(worker)
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self.assertTrue(ok)
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self.assertIsNone(err)
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block = self._env_block(self._config(worker))
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self.assertEqual(block.get("PLAYWRIGHT_BROWSERS_PATH"),
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"/opt/ms-playwright")
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self.assertNotIn("BROWSER_ALLOWED_HOSTS", block)
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# The allowlist never reaches the container env either:
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# the config.toml MCP env block is the only channel.
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self.assertIsNone(env)
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def test_switch_on_reaches_mcp_env(self):
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from unittest import mock
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worker = self._worker()
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with mock.patch.dict(
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os.environ,
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{"BROWSER_ALLOWED_HOSTS": "example.com, .python.org"}):
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self._drop_ambient()
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ok, _, _, env, err = self._context(worker)
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self.assertTrue(ok)
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self.assertIsNone(err)
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block = self._env_block(self._config(worker))
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# Verbatim, not normalised here: normalisation happens
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# at read time in _allowed_hosts.
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self.assertEqual(block.get("BROWSER_ALLOWED_HOSTS"),
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"example.com, .python.org")
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self.assertEqual(block.get("PLAYWRIGHT_BROWSERS_PATH"),
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"/opt/ms-playwright")
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self.assertIsNone(env)
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def test_empty_value_is_never_written(self):
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from unittest import mock
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worker = self._worker()
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with mock.patch.dict(os.environ, {"BROWSER_ALLOWED_HOSTS": ""}):
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ok, _, _, _, err = self._context(worker)
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self.assertTrue(ok)
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self.assertIsNone(err)
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block = self._env_block(self._config(worker))
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self.assertNotIn("BROWSER_ALLOWED_HOSTS", block)
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def test_old_tenant_merge_is_idempotent(self):
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from unittest import mock
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worker = self._worker()
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# Old tenant: seeded before the wiring existed, with a
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# stale env block and a section after it.
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home = worker._tenant_dirs("projA")["codex_home"]
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config_path = os.path.join(home, "config.toml")
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with open(config_path, "a", encoding="utf-8") as fh:
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fh.write("\n[mcp_servers.playwright.env]\n"
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'BROWSER_ALLOWED_HOSTS = "stale.example"\n'
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"\n[other]\nkey = 1\n")
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with mock.patch.dict(
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os.environ,
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{"BROWSER_ALLOWED_HOSTS": "example.com"}):
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ok, _, _, _, err = self._context(worker)
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self.assertTrue(ok)
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self.assertIsNone(err)
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config = open(config_path).read()
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self.assertEqual(config.count("[mcp_servers.playwright.env]"), 1)
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self.assertIn("[other]\nkey = 1\n", config)
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self.assertEqual(
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self._env_block(config).get("BROWSER_ALLOWED_HOSTS"),
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"example.com")
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# Second prep with the same env rewrites nothing.
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before = open(config_path, "rb").read()
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mtime_before = os.stat(config_path).st_mtime_ns
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with mock.patch.dict(
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os.environ,
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{"BROWSER_ALLOWED_HOSTS": "example.com"}):
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ok, _, _, _, err = self._context(worker)
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self.assertTrue(ok)
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self.assertIsNone(err)
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self.assertEqual(open(config_path, "rb").read(), before)
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self.assertEqual(os.stat(config_path).st_mtime_ns, mtime_before)
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def test_ensure_playwright_mcp_env_noop_when_identical(self):
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from cloud.playwright_browser import ensure_playwright_mcp_env
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home = os.path.join(self.tmp.name, "home")
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os.makedirs(home)
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config_path = os.path.join(home, "config.toml")
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open(config_path, "w").write(
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'[model_provider.xcmapi]\n'
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'base_url="https://xcmapi.org/v1"\n')
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env = {"PLAYWRIGHT_BROWSERS_PATH": "/opt/ms-playwright",
|
|
"BROWSER_ALLOWED_HOSTS": "example.com"}
|
|
self.assertTrue(ensure_playwright_mcp_env(home, env))
|
|
before = open(config_path, "rb").read()
|
|
mtime_before = os.stat(config_path).st_mtime_ns
|
|
self.assertFalse(ensure_playwright_mcp_env(home, env))
|
|
self.assertEqual(open(config_path, "rb").read(), before)
|
|
self.assertEqual(os.stat(config_path).st_mtime_ns, mtime_before)
|
|
# A changed value still rewrites, in place, once.
|
|
env2 = dict(env, BROWSER_ALLOWED_HOSTS="other.example")
|
|
self.assertTrue(ensure_playwright_mcp_env(home, env2))
|
|
config = open(config_path).read()
|
|
self.assertEqual(config.count("[mcp_servers.playwright.env]"), 1)
|
|
self.assertEqual(
|
|
self._env_block(config).get("BROWSER_ALLOWED_HOSTS"),
|
|
"other.example")
|
|
|
|
def test_wiring_semantics_allowlist_only_after_wiring(self):
|
|
from unittest import mock
|
|
from cloud.playwright_browser import (
|
|
BrowserError, _allowed_hosts, _check_allowed_url)
|
|
worker = self._worker()
|
|
# Switch off: the MCP env has no variable, so no limit.
|
|
with mock.patch.dict(os.environ, {}, clear=False):
|
|
os.environ.pop("BROWSER_ALLOWED_HOSTS", None)
|
|
self._drop_ambient()
|
|
ok, _, _, _, err = self._context(worker)
|
|
self.assertTrue(ok)
|
|
self.assertIsNone(err)
|
|
block = self._env_block(self._config(worker))
|
|
self.assertNotIn("BROWSER_ALLOWED_HOSTS", block)
|
|
with mock.patch.dict(os.environ, {}, clear=False):
|
|
os.environ.pop("BROWSER_ALLOWED_HOSTS", None)
|
|
self.assertIsNone(_allowed_hosts())
|
|
_check_allowed_url("https://anything.example")
|
|
# Switch on: the written block, applied as MCP process
|
|
# env, makes the allowlist enforce.
|
|
with mock.patch.dict(
|
|
os.environ,
|
|
{"BROWSER_ALLOWED_HOSTS": "example.com, .python.org"}):
|
|
ok, _, _, _, err = self._context(worker)
|
|
self.assertTrue(ok)
|
|
block = self._env_block(self._config(worker))
|
|
self.assertIn("BROWSER_ALLOWED_HOSTS", block)
|
|
with mock.patch.dict(os.environ, block):
|
|
self.assertEqual(_allowed_hosts(),
|
|
["example.com", ".python.org"])
|
|
_check_allowed_url("https://docs.python.org")
|
|
with self.assertRaises(BrowserError):
|
|
_check_allowed_url("https://evil.com")
|
|
|
|
|
|
if __name__ == "__main__":
|
|
unittest.main()
|