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Jake WriterandClaude Opus 5.5
fb21b2e35a
Three behaviours a page could detect, changed in one breaking release:
- **Animations run on stock timing.** no-css-animations.patch finished every
finite animation at once by default, and any page could read it:
`el.animate(frames, 1000).effect.getComputedTiming().duration` was 0, and a
500ms transition reported 0. Measured on v152.0.4-beta.31. The speedup is
now an opt-in, `instantAnimations: True`, which raises a LeakWarning.
disableInstantAnimations is gone.
- **speak() on a spoofed voice works like a real voice.** It fired `error`
after 3ms unless voices:fakeCompletion was set, and then start and end in
the same tick. It now starts and ends after the text's duration at ~150
words per minute. Both voices:fakeCompletion keys are gone, and so is a
debug line printed to stderr on every call.
- **Keys removed:**
- battery:* and window.scrollMinX/Y: Firefox keeps getBattery() and
scrollMin* chrome-only, so no page could read them.
- window.scrollMaxX/Y, screen.pageXOffset/pageYOffset,
window.history.length and document.body.client*: each pinned a live value
to a constant, so scrolling, navigating or re-laying out never changed it.
fpgen.yml mapped pageYOffset, so about 15% of identities froze
window.scrollY at a non-zero value.
- The body keys' role as an undocumented alias for window.innerWidth/Height
in browser-init and in the launcher.
- MaskConfig::GetInt32Rect, which only the body keys used.
New guards, both of which fail on v152.0.4-beta.31:
tests/patches/animation-timing.py and tests/patches/spoofed-voice-speaks.py.
The decisions are recorded as animations-run-on-stock-timing and
spoofed-voices-speak. Every patch applies cleanly to a fresh tree, and the
result builds.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
80 lines
2.4 KiB
Python
80 lines
2.4 KiB
Python
"""Driver-side guard for daijro/camoufox#666.
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Playwright's implicit 1280x720 viewport makes Juggler ask a spoofed window to
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resize to a size it can never reach, deadlocking new_page(). The driver defaults
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to no_viewport whenever the config spoofs any window dimension, which fixes the
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hang on *already-released* browser builds -- no rebuild needed.
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"""
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import pytest
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from camoufox.utils import attach_no_viewport_default, spoofs_window_dimensions
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def _opts(config_blob: str):
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"""Launch options with the config chunked the way launch_options() does."""
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chunks = [config_blob[i : i + 10] for i in range(0, len(config_blob), 10)] or [""]
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return {"env": {f"CAMOU_CONFIG_{i + 1}": c for i, c in enumerate(chunks)}}
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@pytest.mark.parametrize(
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"config, expected",
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[
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('{"window.outerWidth": 360}', True),
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('{"window.innerHeight": 740}', True),
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('{"screen.width": 360}', False),
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('{"navigator.userAgent": "x"}', False),
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("{}", False),
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],
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)
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def test_detects_window_dimension_spoofing(config, expected):
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assert spoofs_window_dimensions(_opts(config)) is expected
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def test_reassembles_chunks_in_index_order():
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"""CAMOU_CONFIG_10 must not sort before CAMOU_CONFIG_2 -- a lexicographic
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join would corrupt the key we search for."""
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blob = '{"padding": "' + "x" * 200 + '", "window.outerWidth": 360}'
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assert spoofs_window_dimensions(_opts(blob)) is True
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def test_no_env_is_not_spoofed():
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assert spoofs_window_dimensions({}) is False
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class _FakeBrowser:
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def __init__(self):
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self.calls = []
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def new_page(self, **kwargs):
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self.calls.append(kwargs)
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return "page"
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def new_context(self, **kwargs):
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self.calls.append(kwargs)
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return "context"
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def test_defaults_to_no_viewport():
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b = attach_no_viewport_default(_FakeBrowser())
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b.new_page()
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b.new_context()
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assert b.calls == [{"no_viewport": True}, {"no_viewport": True}]
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@pytest.mark.parametrize(
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"override",
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[{"viewport": {"width": 800, "height": 600}}, {"no_viewport": False}],
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)
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def test_explicit_caller_choice_always_wins(override):
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"""We must never override an explicit viewport decision."""
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b = attach_no_viewport_default(_FakeBrowser())
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b.new_page(**override)
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assert b.calls == [override]
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def test_other_kwargs_are_forwarded():
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b = attach_no_viewport_default(_FakeBrowser())
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b.new_page(locale="en-US")
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assert b.calls == [{"locale": "en-US", "no_viewport": True}]
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