File size: 11,906 Bytes
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import json
import os
from pathlib import Path
import platform
import shutil
import struct
import subprocess
import sys
import tempfile
import unittest
from unittest.mock import patch
from linux_runtime import inspect, project
from runtime import PLUGINS, digest
@unittest.skipUnless(sys.platform == "linux", "GNU Linux native runtime preparation")
class RuntimeTests(unittest.TestCase):
def setUp(self):
temporary = tempfile.TemporaryDirectory(prefix="native voice ")
self.addCleanup(temporary.cleanup)
self.root = Path(temporary.name)
self.prefix, self.receipts, self.output = (
self.root / name for name in ("input é", "receipts", "runtime")
)
self.target = (
"aarch64" if platform.machine() == "aarch64" else "x86_64"
) + "-unknown-linux-gnu"
(self.prefix / "lib/gstreamer-1.0").mkdir(parents=True)
(self.receipts / "inspection").mkdir(parents=True)
source = self.root / "fixture.c"
source.write_text("int voice_fixture(void) { return 42; }\n")
self.library = self.prefix / "lib/libfixture.so.1.2"
subprocess.run(
[
"cc",
"-shared",
"-fPIC",
str(source),
"-o",
str(self.library),
"-Wl,-soname,libfixture.so.1",
],
check=True,
capture_output=True,
)
source.write_text("int voice_gio_dependency(void) { return 84; }\n")
gio_dependency = self.prefix / "lib/libgiofixture.so.1.2"
subprocess.run(
[
"cc",
"-shared",
"-fPIC",
str(source),
"-o",
str(gio_dependency),
"-Wl,-soname,libgiofixture.so.1",
],
check=True,
capture_output=True,
)
source.write_text(
"extern int voice_gio_dependency(void); "
"int voice_gio_fixture(void) { return voice_gio_dependency(); }\n"
)
subprocess.run(
[
"cc",
"-shared",
"-fPIC",
str(source),
str(gio_dependency),
"-Wl,-rpath,$ORIGIN",
"-o",
str(self.prefix / "lib/libgio-2.0.so.0.8800.3"),
"-Wl,-soname,libgio-2.0.so.0",
],
check=True,
capture_output=True,
)
source.write_text(
"extern int voice_fixture(void); int voice_plugin(void) { return voice_fixture(); }\n"
)
for name in PLUGINS:
plugin = self.prefix / f"lib/gstreamer-1.0/libgst{name}.so"
subprocess.run(
[
"cc",
"-shared",
"-fPIC",
str(source),
str(self.library),
"-o",
str(plugin),
f"-Wl,-soname,{plugin.name}",
"-Wl,-rpath,$ORIGIN:$ORIGIN/..",
],
check=True,
capture_output=True,
)
self.inventory_path = self.receipts / "inspection/binaries.json"
self.inventory = [
{
"path": p.relative_to(self.prefix).as_posix(),
"sha256": digest(p),
"target": self.target,
}
for p in sorted(self.prefix.rglob("*.so*"))
if p.is_file()
]
self.inventory_path.write_text(json.dumps(self.inventory))
(self.receipts / "ci.json").write_text(
json.dumps(
{
"commit": "a" * 40,
"target": self.target,
"build_complete": True,
"inspection_complete": True,
"manifest_sha256": digest(Path(__file__).with_name("sources.json")),
}
)
)
def test_relocated_libraries_load_without_original_prefix(self):
subprocess.run(
[
sys.executable,
str(Path(__file__).with_name("linux_runtime.py").resolve()),
"--prefix",
str(self.prefix),
"--receipts",
str(self.receipts),
"--target",
self.target,
"--output",
str(self.output),
],
check=True,
capture_output=True,
cwd=self.root,
env={**os.environ, "PYTHONSAFEPATH": "1"},
)
self.assertEqual(
{r["path"]: digest(self.prefix / r["path"]) for r in self.inventory},
{r["path"]: r["sha256"] for r in self.inventory},
)
moved = self.root / "moved runtime"
self.output.rename(moved)
shutil.rmtree(self.prefix)
environment = {k: v for k, v in os.environ.items() if not k.startswith("LD_")}
result = subprocess.run(
[
sys.executable,
"-c",
"import ctypes,json,pathlib,sys; root=pathlib.Path(sys.argv[1]); "
"manifest=json.loads((root/'runtime.json').read_text()); "
"print([ctypes.CDLL(str(root/p)).voice_plugin() for p in manifest['plugins']] + "
"[ctypes.CDLL(str(root/'lib/libgio-2.0.so.0')).voice_gio_fixture()])",
str(moved),
],
check=True,
capture_output=True,
text=True,
env=environment,
cwd=self.root,
)
self.assertEqual(json.loads(result.stdout), [42] * len(PLUGINS) + [84])
manifest = json.loads((moved / "runtime.json").read_text())
self.assertEqual(
{record["path"] for record in manifest["libraries"]},
{
"lib/libfixture.so.1",
"lib/libgio-2.0.so.0",
"lib/libgiofixture.so.1",
*(f"lib/gstreamer-1.0/libgst{name}.so" for name in PLUGINS),
},
)
for record in manifest["libraries"]:
path = moved / record["path"]
expected = (
("29=$ORIGIN:$ORIGIN/..",)
if path.parent.name == "gstreamer-1.0"
else ()
)
if path.name == "libgio-2.0.so.0":
expected = ("29=$ORIGIN",)
self.assertEqual(inspect(path, self.target).rpaths, expected)
self.assertEqual(digest(path), record["sourceSha256"])
self.assertEqual(record["sha256"], record["sourceSha256"])
def test_absolute_build_paths_require_a_new_native_build(self):
plugin = self.prefix / "lib/gstreamer-1.0/libgstapp.so"
subprocess.run(
["patchelf", "--set-rpath", str(self.prefix / "lib"), str(plugin)],
check=True,
capture_output=True,
)
for record in self.inventory:
record["sha256"] = digest(self.prefix / record["path"])
self.inventory_path.write_text(json.dumps(self.inventory))
with self.assertRaisesRegex(ValueError, "rebuild native libraries"):
project(self.prefix, self.receipts, self.target, self.output)
self.assertFalse(self.output.exists())
def test_missing_dependency_and_digest_mismatch_leave_no_output(self):
for records in (
[r for r in self.inventory if "libgio" not in r["path"]],
[r for r in self.inventory if "libfixture" not in r["path"]],
[r for r in self.inventory if "libgiofixture" not in r["path"]],
[{**r, "sha256": "b" * 64} for r in self.inventory],
):
with self.subTest(records=records), self.assertRaises(ValueError):
self.inventory_path.write_text(json.dumps(records))
project(self.prefix, self.receipts, self.target, self.output)
self.assertFalse(self.output.exists())
def test_path_import_is_not_treated_as_a_system_library(self):
plugin = self.prefix / "lib/gstreamer-1.0/libgstapp.so"
subprocess.run(
[
"patchelf",
"--replace-needed",
"libfixture.so.1",
"outside\nlibc.so.6",
str(plugin),
],
check=True,
capture_output=True,
)
with self.assertRaisesRegex(ValueError, "plain library names"):
inspect(plugin, self.target)
def test_malformed_header_and_segment_bounds_are_rejected(self):
original = self.library.read_bytes()
for offset, replacement in (
(18, b"\x00\x00"),
(32, struct.pack("<Q", len(original))),
(56, b"\xff\xff"),
):
data = bytearray(original)
data[offset : offset + len(replacement)] = replacement
self.library.write_bytes(data)
with self.subTest(offset=offset), self.assertRaises(ValueError):
inspect(self.library, self.target)
def test_additional_loader_dependencies_are_rejected(self):
data = bytearray(self.library.read_bytes())
header = struct.unpack_from("<16sHHIQQQIHHHHHH", data)
for index in range(header[10]):
segment = struct.unpack_from("<IIQQQQQQ", data, header[5] + index * 56)
if segment[0] == 2:
struct.pack_into("<qQ", data, segment[2], 0x7FFFFFFF, 0)
break
self.library.write_bytes(data)
with self.assertRaisesRegex(ValueError, "unsupported ELF loader"):
inspect(self.library, self.target)
def test_dynamic_table_mapping_is_checked_before_creating_output(self):
# An existing intended runpath can make patchelf leave this malformed table untouched.
subprocess.run(
["patchelf", "--set-rpath", "$ORIGIN", str(self.library)],
check=True,
capture_output=True,
)
original = self.library.read_bytes()
header = struct.unpack_from("<16sHHIQQQIHHHHHH", original)
dynamic_offset = next(
header[5] + index * 56
for index in range(header[10])
if struct.unpack_from("<I", original, header[5] + index * 56)[0] == 2
)
address = struct.unpack_from("<Q", original, dynamic_offset + 16)[0]
for invalid_address in (address + 8, 0x77770000):
data = bytearray(original)
struct.pack_into("<Q", data, dynamic_offset + 16, invalid_address)
self.library.write_bytes(data)
self.inventory_path.write_text(
json.dumps(
[
{**record, "sha256": digest(self.prefix / record["path"])}
for record in self.inventory
]
)
)
with (
self.subTest(address=invalid_address),
self.assertRaisesRegex(ValueError, "dynamic table.*mapping"),
):
project(self.prefix, self.receipts, self.target, self.output)
self.assertFalse(self.output.exists())
def test_failed_copy_removes_only_fresh_output(self):
before = {r["path"]: digest(self.prefix / r["path"]) for r in self.inventory}
with patch("runtime.shutil.copy2", side_effect=RuntimeError("copy failed")):
with self.assertRaisesRegex(RuntimeError, "copy failed"):
project(self.prefix, self.receipts, self.target, self.output)
self.assertFalse(self.output.exists())
self.assertEqual(
before, {r["path"]: digest(self.prefix / r["path"]) for r in self.inventory}
)
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