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Geo-aware locale, audio noise off, font prefs for the bundled-font binary

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locale defaults to "auto" and resolves from the proxy egress country the same
way timezone does - it reuses the egress IP, maps the country to a BCP-47 locale
with the offline mmdb, and falls back to en-US. prefs emit juggler.locale.override
(the full Accept-Language list) so the binary keeps navigator.languages and the
Intl default locale in sync.

The audio fingerprint noise is off in the baseline. Font prefs match the new
binary: the sampled whitelist drives font.system.whitelist, system-ui is Segoe
UI, the bundled fonts are activated, and the CSS generics are pinned to Windows
defaults so they resolve on a non-Windows host too.
This commit is contained in:
feder-cr 2026-06-23 17:51:58 +02:00
parent 8f4b20a19d
commit 3c0efa2d4f
13 changed files with 353 additions and 1015 deletions
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41
tests/test_integration.py
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@ -42,8 +42,8 @@ _REQUIRED_PREFS_KEYS = (
"media.encoder.webm.enabled",
"media.mediasource.webm.enabled",
"media.mediasource.mp4.enabled",
"zoom.stealth.font.whitelist",
"zoom.stealth.font.metrics",
"zoom.stealth.font.fontlist",
"zoom.stealth.font.system_ui",
"ui.systemUsesDarkTheme",
"intl.accept_languages",
"general.useragent.locale",
@ -197,23 +197,26 @@ def test_http_proxy_returned_unchanged_no_socks_mutations():
# ──────────────────────────────────────────────────────────────────────
# IT7: profile.fonts reaches prefs as a comma-joined whitelist
# IT7: profile.fonts reaches prefs as a comma-joined fontlist
# ──────────────────────────────────────────────────────────────────────
@pytest.mark.integration
def test_profile_fonts_propagate_to_prefs_whitelist():
def test_profile_fonts_propagate_to_prefs_fontlist():
"""IT7 — every font in ``profile.fonts`` appears in the comma-joined
``zoom.stealth.font.whitelist`` pref, in order."""
``zoom.stealth.font.fontlist`` pref, in order. The binary applies this
list to the native system font allow-list at construction; system-ui is
forced to Segoe UI."""
profile = generate_profile(seed=42)
prefs = translate_profile_to_prefs(profile)
assert profile.fonts, "fixture seed=42 produced empty fonts list"
whitelist = prefs["zoom.stealth.font.whitelist"]
assert isinstance(whitelist, str)
assert whitelist == ",".join(profile.fonts)
fontlist = prefs["zoom.stealth.font.fontlist"]
assert isinstance(fontlist, str)
assert fontlist == ",".join(profile.fonts)
for font in profile.fonts:
assert font in whitelist
assert font in fontlist
assert prefs["zoom.stealth.font.system_ui"] == "Segoe UI"
# ──────────────────────────────────────────────────────────────────────
@ -357,23 +360,3 @@ def test_linux_msaa_pin_propagates_through_pipeline(monkeypatch):
assert prefs["webgl.msaa-force"] is True
# ──────────────────────────────────────────────────────────────────────
# IT13 (extra): Linux font metrics receive the GTK/DejaVu compensation
# block. End-to-end check that ``_LINUX_GENERIC_FONT_FACTORS`` is
# prepended to the per-font metrics string sampled from the profile.
# ──────────────────────────────────────────────────────────────────────
@pytest.mark.integration
def test_linux_font_metrics_include_generic_factors(monkeypatch):
"""IT13 — on Linux the font metrics pref starts with the generic
width-scale factors (GTK/DejaVu compensation) so glyph widths match
Windows. Without this, Linux sessions leak via metric drift."""
from invisible_playwright.prefs import _LINUX_GENERIC_FONT_FACTORS
monkeypatch.setattr(sys, "platform", "linux")
profile = generate_profile(seed=42)
prefs = translate_profile_to_prefs(profile)
metrics = prefs["zoom.stealth.font.metrics"]
assert metrics.startswith(_LINUX_GENERIC_FONT_FACTORS)