mirror of
https://github.com/spoopyghosty0/frameport.git
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190 lines
8.9 KiB
Python
190 lines
8.9 KiB
Python
"""Cpp2IL's development build for Unity metadata newer than its release reads (Unity 6.5: v107, GitHub #198)."""
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import json
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import sys
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import zipfile
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from pathlib import Path
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import pytest
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from frameport.analysis import il2cpp
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from frameport.tools import cpp2il
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ERROR = "---> System.FormatException: Unsupported metadata version found! We support 23-106, got 107"
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WANTED = {"Assembly-CSharp/X.cs": ["Run"]}
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def test_unsupported_metadata_and_runtime_ids(monkeypatch):
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assert cpp2il.unsupported_metadata("Cpp2IL couldn't read this game's code: " + ERROR)
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assert not cpp2il.unsupported_metadata("Cpp2IL couldn't read this game's code: Unity 2017 isn't supported")
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monkeypatch.setattr(cpp2il.platform, "machine", lambda: "aarch64")
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for plat, rid in (("linux", "linux-arm64"), ("darwin", "osx-arm64"), ("win32", "win-x64")):
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monkeypatch.setattr(cpp2il.sys, "platform", plat)
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assert cpp2il.nightly_rid() == rid
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monkeypatch.setattr(cpp2il.platform, "machine", lambda: "x86_64")
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monkeypatch.setattr(cpp2il.sys, "platform", "linux")
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assert cpp2il.nightly_rid() == "linux-x64"
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def test_release_path_ignores_the_development_build(monkeypatch, tmp_path):
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monkeypatch.setattr(cpp2il, "tools_dir", lambda: tmp_path)
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monkeypatch.delenv("FRAMEPORT_CPP2IL", raising=False)
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monkeypatch.setattr(cpp2il.sys, "platform", "linux")
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for d in ("cpp2il-2022.1.0-pre-release.21", cpp2il.NIGHTLY_DIR):
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(tmp_path / d).mkdir()
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(tmp_path / d / "Cpp2IL").write_text("")
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assert cpp2il.path() == tmp_path / "cpp2il-2022.1.0-pre-release.21" / "Cpp2IL"
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def test_ensure_nightly_unpacks_the_executable(monkeypatch, tmp_path):
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monkeypatch.setattr(cpp2il, "tools_dir", lambda: tmp_path)
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monkeypatch.setattr(cpp2il.sys, "platform", "linux")
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urls = []
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def download(url, dest, progress=None):
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urls.append(url)
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dest.parent.mkdir(parents=True, exist_ok=True)
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with zipfile.ZipFile(dest, "w") as z:
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z.writestr("Cpp2IL", b"\x7fELF fake")
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return dest
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monkeypatch.setattr(cpp2il.cache, "download", download)
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exe = cpp2il.ensure_nightly()
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assert exe == tmp_path / cpp2il.NIGHTLY_DIR / "Cpp2IL" and exe.read_bytes() == b"\x7fELF fake"
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assert urls[0].startswith("https://nightly.link/SamboyCoding/Cpp2IL/") and urls[0].endswith(".zip")
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assert not (tmp_path / cpp2il.NIGHTLY_DIR / "cpp2il.zip").exists()
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assert cpp2il.ensure_nightly() == exe and len(urls) == 1 # downloaded once
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@pytest.fixture
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def tools(monkeypatch, tmp_path):
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"""Release + development build stand-ins: the release can't read metadata v107."""
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monkeypatch.setattr(il2cpp, "cache_dir", lambda: tmp_path)
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monkeypatch.delenv("FRAMEPORT_CPP2IL", raising=False)
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release, nightly = Path("release/Cpp2IL"), Path("nightly/Cpp2IL")
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monkeypatch.setattr(cpp2il, "ensure", lambda progress=None: release)
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monkeypatch.setattr(cpp2il, "ensure_nightly", lambda progress=None: nightly)
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runs = []
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def run(exe, lib, metadata, unity_version, wanted, timeout):
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runs.append(exe)
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if exe == release:
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raise il2cpp._Unreadable(ERROR)
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return {"Assembly-CSharp/X.cs": {"Run": (0x1000, 0x20)}}, []
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monkeypatch.setattr(il2cpp, "_run", run)
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return release, nightly, runs
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def test_find_methods_falls_back_to_the_development_build(tools, tmp_path):
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release, nightly, runs = tools
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found = il2cpp.find_methods(b"lib", b"meta", "6000.5.6f1", WANTED)
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assert found == {"Assembly-CSharp/X.cs": {"Run": (0x1000, 0x20)}} and runs == [release, nightly]
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assert il2cpp.find_methods(b"lib", b"meta", "6000.5.6f1", WANTED) == found and len(runs) == 2 # cached
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def test_cached_release_error_is_retried_once_with_the_development_build(tools, tmp_path):
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release, nightly, runs = tools
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cache = il2cpp._cache_file(b"lib", b"meta")
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cache.parent.mkdir(parents=True, exist_ok=True)
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cache.write_text(json.dumps({"unity_version": "6000.5.6f1", "error": "Cpp2IL couldn't read this game's code: "
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+ ERROR}))
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assert il2cpp.find_methods(b"lib", b"meta", "6000.5.6f1", WANTED)
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assert runs == [nightly]
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cache.write_text(json.dumps({"unity_version": "6000.5.6f1", "error": "x: " + ERROR, "nightly": True}))
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with pytest.raises(RuntimeError): # the development build couldn't either: not run again
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il2cpp.find_methods(b"lib", b"meta", "6000.5.6f1", WANTED)
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assert runs == [nightly]
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def test_any_release_failure_tries_the_development_build_once(tools, monkeypatch):
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"""BattleTalent (Unity 2021.3, GitHub #293): the release crashes (IndexOutOfRangeException in GetTypeName), the
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development build reads it. Any failure of the release gets the one development-build try."""
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release, nightly, runs = tools
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def run(exe, *a):
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runs.append(exe)
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raise il2cpp._Unreadable("System.NullReferenceException: Object reference not set")
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monkeypatch.setattr(il2cpp, "_run", run)
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with pytest.raises(RuntimeError, match="couldn't read this game's code: System.NullReferenceException"):
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il2cpp.find_methods(b"lib", b"meta", "2022.3.1f1", WANTED)
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assert runs == [release, nightly]
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cached = json.loads(il2cpp._cache_file(b"lib", b"meta").read_text())
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assert cached["nightly"] is True and "missing" not in cached # an error, never "no such classes"
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with pytest.raises(RuntimeError): # both failed: not run again per patch
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il2cpp.find_methods(b"lib", b"meta", "2022.3.1f1", WANTED)
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assert runs == [release, nightly]
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def test_explicit_cpp2il_is_never_swapped(tools, monkeypatch):
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release, nightly, runs = tools
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mine = Path("mine/Cpp2IL")
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def run(exe, *a):
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runs.append(exe)
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raise il2cpp._Unreadable("System.IndexOutOfRangeException: Index was outside the bounds of the array.")
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monkeypatch.setattr(il2cpp, "_run", run)
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with pytest.raises(RuntimeError):
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il2cpp.find_methods(b"lib", b"meta", "2021.3.45f2", WANTED, cpp2il=mine)
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assert runs == [mine]
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il2cpp._cache_file(b"lib", b"meta").unlink()
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monkeypatch.setenv("FRAMEPORT_CPP2IL", str(release)) # the user's override (ensure() returns it)
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with pytest.raises(RuntimeError):
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il2cpp.find_methods(b"lib", b"meta", "2021.3.45f2", WANTED)
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assert runs == [mine, release]
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def test_poisoned_cache_is_run_again(tools):
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"""An older FramePort cached a Cpp2IL crash as "every class missing"; such an entry is run again."""
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release, nightly, runs = tools
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cache = il2cpp._cache_file(b"lib", b"meta")
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cache.parent.mkdir(parents=True, exist_ok=True)
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cache.write_text(json.dumps({"unity_version": "2021.3.45f2", "missing": list(WANTED), "classes": {}}))
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assert il2cpp.find_methods(b"lib", b"meta", "2021.3.45f2", WANTED) == {
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"Assembly-CSharp/X.cs": {"Run": (0x1000, 0x20)}}
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assert runs == [release, nightly]
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# a genuine result (some classes found) is kept
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assert il2cpp.find_methods(b"lib", b"meta", "2021.3.45f2", WANTED) and runs == [release, nightly]
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def _fake_cpp2il(tmp_path, script: str) -> Path:
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exe = tmp_path / "bin" / "Cpp2IL"
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exe.parent.mkdir(parents=True, exist_ok=True)
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exe.write_text("#!/bin/sh\n" + script)
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exe.chmod(0o755)
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return exe
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@pytest.mark.skipif(sys.platform == "win32", reason="shell-script stand-in for Cpp2IL")
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def test_cpp2il_crash_after_making_folders_is_unreadable(monkeypatch, tmp_path):
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"""The release's crash on BattleTalent: the DiffableCs folder tree exists, no .cs file, exit 134. That's an
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unreadable game (-> the development build), not "none of the classes are in it"."""
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monkeypatch.setattr(il2cpp, "cache_dir", lambda: tmp_path / "cache")
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monkeypatch.delenv("FRAMEPORT_CPP2IL", raising=False)
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crash = _fake_cpp2il(
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tmp_path / "release",
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"""out=""; while [ $# -gt 0 ]; do [ "$1" = --output-to ] && out=$2; shift; done
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mkdir -p "$out/DiffableCs/Assembly-CSharp"
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echo "Unhandled exception. System.IndexOutOfRangeException: Index was outside the bounds of the array." >&2
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echo " at Cpp2IL.Core.Utils.CsFileUtils.GetTypeName(...) in CsFileUtils.cs:line 282" >&2
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exit 134
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""")
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good = _fake_cpp2il(
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tmp_path / "nightly",
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"""out=""; while [ $# -gt 0 ]; do [ "$1" = --output-to ] && out=$2; shift; done
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mkdir -p "$out/DiffableCs/Assembly-CSharp"
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cat > "$out/DiffableCs/Assembly-CSharp/X.cs" <<'CS'
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\t[Address(RVA = "0x5000", Offset = "0x1000", Length = "0x20")]
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\tpublic void Run() { }
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CS
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""")
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monkeypatch.setattr(cpp2il, "ensure", lambda progress=None: crash)
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monkeypatch.setattr(cpp2il, "ensure_nightly", lambda progress=None: good)
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with pytest.raises(il2cpp._Unreadable, match=r"IndexOutOfRangeException.*\(exit code 134\)"):
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il2cpp._run(crash, b"lib", b"meta", "2021.3.45f2", WANTED, 60)
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assert il2cpp.find_methods(b"lib", b"meta", "2021.3.45f2", WANTED) == {
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"Assembly-CSharp/X.cs": {"Run": (0x1000, 0x20)}}
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cached = json.loads(il2cpp._cache_file(b"lib", b"meta").read_text())
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assert cached["nightly"] is True and cached["classes"]
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