OAuth auto-open only checked _is_remote_session() (SSH + cloud-shell env vars). On a headless/CLI-only Linux box with no GUI browser, none of those trip, so webbrowser.open() resolved to a console browser (w3m/lynx/links) and launched it INSIDE the terminal — hijacking the user's TTY with the xAI 'Account Management' login page instead of letting them copy the URL. Add _can_open_graphical_browser(): returns False when webbrowser would resolve to a known console browser, when $BROWSER names one, when there's no display server on Linux, or when no browser resolves at all. Gate all 5 OAuth auto-open callsites (xAI loopback, Spotify loopback, MiniMax device code, Anthropic, Google) on it in addition to the existing remote check. Headless boxes now print the URL / fall through to manual-paste instead.
97 lines
3.4 KiB
Python
97 lines
3.4 KiB
Python
"""Tests for `_can_open_graphical_browser()` in hermes_cli.auth.
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Guards the fix for the May 2026 report where `hermes auth add xai-oauth`
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launched a text-mode browser (w3m) INSIDE the terminal on a headless Linux
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box — `_is_remote_session()` only checked SSH/cloud-shell env vars, so a plain
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local box with no GUI browser still called `webbrowser.open()`, which resolved
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to a console browser and hijacked the TTY.
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The helper distinguishes "a real windowed browser will pop up" from "a console
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browser will hijack the terminal" so OAuth callsites can fall back to printing
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the URL / manual paste instead of auto-opening.
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"""
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from __future__ import annotations
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import webbrowser
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import pytest
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from hermes_cli.auth import _can_open_graphical_browser
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class _FakeController:
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def __init__(self, name: str) -> None:
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self.name = name
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def open(self, *_a, **_kw): # pragma: no cover - never invoked
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return True
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@pytest.fixture(autouse=True)
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def _clean_browser_env(monkeypatch):
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"""Each test controls DISPLAY / WAYLAND_DISPLAY / BROWSER explicitly."""
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for var in ("DISPLAY", "WAYLAND_DISPLAY", "BROWSER"):
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monkeypatch.delenv(var, raising=False)
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yield
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def _force_platform_linux(monkeypatch):
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monkeypatch.setattr("hermes_cli.auth.sys.platform", "linux")
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def _force_resolved_browser(monkeypatch, name: str):
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monkeypatch.setattr(webbrowser, "get", lambda *_a, **_kw: _FakeController(name))
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def test_headless_linux_no_display_refuses(monkeypatch):
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"""The reported bug: headless Linux, no display server → don't auto-open."""
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_force_platform_linux(monkeypatch)
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# Even if a GUI browser somehow resolved, no display means no GUI.
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_force_resolved_browser(monkeypatch, "google-chrome")
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assert _can_open_graphical_browser() is False
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def test_browser_env_pointing_at_console_browser_refuses(monkeypatch):
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"""$BROWSER=w3m must refuse even with a display server present."""
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_force_platform_linux(monkeypatch)
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monkeypatch.setenv("DISPLAY", ":0")
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monkeypatch.setenv("BROWSER", "/usr/bin/w3m")
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assert _can_open_graphical_browser() is False
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@pytest.mark.parametrize("console", ["w3m", "lynx", "links", "elinks", "browsh"])
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def test_resolved_console_browser_refuses(monkeypatch, console):
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"""When webbrowser resolves to a console browser, refuse to auto-open."""
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_force_platform_linux(monkeypatch)
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monkeypatch.setenv("DISPLAY", ":0")
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_force_resolved_browser(monkeypatch, console)
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assert _can_open_graphical_browser() is False
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def test_graphical_browser_with_display_allows(monkeypatch):
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"""Real GUI browser + display server → auto-open is fine."""
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_force_platform_linux(monkeypatch)
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monkeypatch.setenv("DISPLAY", ":0")
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_force_resolved_browser(monkeypatch, "firefox")
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assert _can_open_graphical_browser() is True
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def test_webbrowser_get_raises_refuses(monkeypatch):
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"""No resolvable browser at all → don't auto-open."""
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_force_platform_linux(monkeypatch)
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monkeypatch.setenv("DISPLAY", ":0")
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def _boom(*_a, **_kw):
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raise webbrowser.Error("no browser")
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monkeypatch.setattr(webbrowser, "get", _boom)
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assert _can_open_graphical_browser() is False
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def test_non_linux_with_gui_allows(monkeypatch):
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"""macOS / Windows always have a usable default GUI browser."""
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monkeypatch.setattr("hermes_cli.auth.sys.platform", "darwin")
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_force_resolved_browser(monkeypatch, "MacOSX")
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assert _can_open_graphical_browser() is True
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