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from __future__ import annotations
from typing import Any
from unittest.mock import Mock, patch
import pytest
from elftools.common.exceptions import ELFError
from auditwheel.elfutils import (
elf_file_filter,
elf_find_ucs2_symbols,
elf_find_versioned_symbols,
elf_read_dt_needed,
elf_read_rpaths,
elf_references_pyfpe_jbuf,
get_undefined_symbols,
)
class MockSymbol(dict[str, Any]):
"""Mock representing a Symbol in ELFTools."""
def __init__(self, name: str, **kwargs): # type: ignore[no-untyped-def]
super().__init__(**kwargs)
self._name = name
@property
def name(self):
return self._name
@patch("auditwheel.elfutils.ELFFile")
class TestElfReadDt:
def test_missing_section(self, elffile_mock, tmp_path):
fake = tmp_path / "fake.so"
# GIVEN
fake.touch()
elffile_mock.return_value.get_section_by_name.return_value = None
# THEN
with pytest.raises(ValueError, match=r"^Could not find soname.*"):
# WHEN
elf_read_dt_needed(fake)
def test_needed_libs(self, elffile_mock, tmp_path):
fake = tmp_path / "fake.so"
# GIVEN
fake.touch()
section_mock = Mock()
tag1 = Mock(needed="libz.so")
tag1.entry.d_tag = "DT_NEEDED"
tag2 = Mock(needed="libfoo.so")
tag2.entry.d_tag = "DT_NEEDED"
section_mock.iter_tags.return_value = [tag1, tag2]
elffile_mock.return_value.get_section_by_name.return_value = section_mock
# WHEN
needed = elf_read_dt_needed(fake)
# THEN
assert len(needed) == 2
assert "libz.so" in needed
assert "libfoo.so" in needed
@patch("auditwheel.elfutils.ELFFile")
class TestElfFileFilter:
def test_filter(self, elffile_mock, tmp_path): # noqa: ARG002
file1 = tmp_path / "file1.so"
file2 = tmp_path / "file2.so"
file1.touch()
file2.touch()
result = elf_file_filter([file1, file2])
assert len(list(result)) == 2
def test_some_py_files(self, elffile_mock, tmp_path): # noqa: ARG002
file1 = tmp_path / "file1.py"
file2 = tmp_path / "file2.so"
file3 = tmp_path / "file3.py"
file1.touch()
file2.touch()
file3.touch()
result = elf_file_filter([file1, file2, file3])
assert len(list(result)) == 1
def test_not_elf(self, elffile_mock, tmp_path):
file1 = tmp_path / "file1.notelf"
file2 = tmp_path / "file2.notelf"
# GIVEN
file1.touch()
file2.touch()
elffile_mock.side_effect = ELFError
# WHEN
result = elf_file_filter([file1, file2])
# THEN
assert len(list(result)) == 0
class TestElfFindVersionedSymbols:
def test_find_symbols(self):
# GIVEN
elf = Mock()
verneed = Mock()
verneed.configure_mock(name="foo-lib")
veraux = Mock()
veraux.configure_mock(name="foo-lib")
elf.get_section_by_name.return_value.iter_versions.return_value = ((verneed, [veraux]),)
# WHEN
symbols = list(elf_find_versioned_symbols(elf))
# THEN
assert symbols == [("foo-lib", "foo-lib")]
@pytest.mark.parametrize("ld_name", ["ld-linux", "ld64.so.2", "ld64.so.1"])
def test_only_ld_linux(self, ld_name):
# GIVEN
elf = Mock()
verneed = Mock()
verneed.configure_mock(name=ld_name)
veraux = Mock()
veraux.configure_mock(name="foo-lib")
elf.get_section_by_name.return_value.iter_versions.return_value = ((verneed, [veraux]),)
# WHEN
symbols = list(elf_find_versioned_symbols(elf))
# THEN
assert len(symbols) == 0
def test_empty_section(self):
# GIVEN
elf = Mock()
elf.get_section_by_name.return_value = None
# WHEN
symbols = list(elf_find_versioned_symbols(elf))
# THEN
assert len(symbols) == 0
class TestFindUcs2Symbols:
def test_missing_dynsym_section(self):
# GIVEN
elf = Mock()
elf.get_section_by_name.return_value = None
# THEN
result = list(elf_find_ucs2_symbols(elf))
assert result == []
def test_elf_find_ucs2_symbols(self):
# GIVEN
elf = Mock()
asunicode = MockSymbol(
"PyUnicodeUCS2_AsUnicode",
st_shndx="SHN_UNDEF",
st_info={"type": "STT_FUNC"},
)
elf_symbols = (asunicode, Mock())
elf_symbols[1].name = "foobar"
elf.get_section_by_name.return_value.iter_symbols.return_value = elf_symbols
# WHEN
symbols = list(elf_find_ucs2_symbols(elf))
# THEN
assert len(symbols) == 1
assert symbols[0] == "PyUnicodeUCS2_AsUnicode"
def test_elf_find_ucs2_symbols_no_symbol(self):
# GIVEN
elf = Mock()
elf_symbols = (MockSymbol("FooSymbol"),)
elf.get_section_by_name.return_value.iter_symbols.return_value = elf_symbols
# WHEN/THEN
symbols = list(elf_find_ucs2_symbols(elf))
assert len(symbols) == 0
class TestElfReferencesPyPFE:
def test_elf_references_pyfpe_jbuf(self):
# GIVEN
elf = Mock()
symbols = (
MockSymbol(
"PyFPE_jbuf",
st_shndx="SHN_UNDEF",
st_info={"type": "STT_FUNC"},
),
)
elf.get_section_by_name.return_value.iter_symbols.return_value = symbols
# WHEN/THEN
assert elf_references_pyfpe_jbuf(elf) is True
def test_elf_references_pyfpe_jbuf_false(self):
# GIVEN
elf = Mock()
symbols = (
MockSymbol(
"SomeSymbol",
st_shndx="SHN_UNDEF",
st_info={"type": "STT_FUNC"},
),
)
elf.get_section_by_name.return_value.iter_symbols.return_value = symbols
# WHEN/THEN
assert elf_references_pyfpe_jbuf(elf) is False
def test_elf_references_pyfpe_jbuf_no_section(self):
# GIVEN
elf = Mock()
# WHEN
elf.get_section_by_name.return_value = None
# WHEN/THEN
assert elf_references_pyfpe_jbuf(elf) is False
@patch("auditwheel.elfutils.ELFFile")
class TestElfReadRpaths:
def test_missing_dynamic_section(self, elffile_mock, tmp_path):
fake = tmp_path / "fake.so"
# GIVEN
fake.touch()
elffile_mock.return_value.get_section_by_name.return_value = None
# THEN
result = elf_read_rpaths(fake)
assert result == {"rpaths": [], "runpaths": []}
@patch("auditwheel.elfutils.ELFFile")
class TestGetUndefinedSymbols:
def test_missing_dynsym_section(self, elffile_mock, tmp_path):
fake = tmp_path / "fake.so"
# GIVEN
fake.touch()
elffile_mock.return_value.get_section_by_name.return_value = None
# THEN
result = get_undefined_symbols(fake)
assert result == set()
|
