def _find_dependencies(root, part_files):
ms = magic.open(magic.NONE)
if ms.load() != 0:
raise RuntimeError('Cannot load magic header detection')
elf_files = set()
fs_encoding = sys.getfilesystemencoding()
for part_file in part_files:
# Filter out object (*.o) files-- we only care about binaries.
if part_file.endswith('.o'):
continue
# No need to crawl links-- the original should be here, too.
path = os.path.join(root, part_file)
if os.path.islink(path):
logger.debug(
'Skipped link {!r} while finding dependencies'.format(path))
continue
path = path.encode(fs_encoding, errors='surrogateescape')
# Finally, make sure this is actually an ELF before queueing it up
# for an ldd call.
file_m = ms.file(path)
if file_m.startswith('ELF') and 'dynamically linked' in file_m:
elf_files.add(path)
dependencies = []
for elf_file in elf_files:
dependencies += libraries.get_dependencies(elf_file)
return set(dependencies)
def _find_dependencies(root, part_files):
ms = magic.open(magic.NONE)
if ms.load() != 0:
raise RuntimeError('Cannot load magic header detection')
elf_files = set()
fs_encoding = sys.getfilesystemencoding()
for part_file in part_files:
# Filter out object (*.o) files-- we only care about binaries.
if part_file.endswith('.o'):
continue
# No need to crawl links-- the original should be here, too.
path = os.path.join(root, part_file)
if os.path.islink(path):
logger.debug('Skipped link {!r} while finding dependencies'.format(
path))
continue
path = path.encode(fs_encoding, errors='surrogateescape')
# Finally, make sure this is actually an ELF before queueing it up
# for an ldd call.
file_m = ms.file(path)
if file_m.startswith('ELF') and 'dynamically linked' in file_m:
elf_files.add(path)
dependencies = []
for elf_file in elf_files:
dependencies += libraries.get_dependencies(elf_file)
return set(dependencies)
def _find_dependencies(workdir):
ms = magic.open(magic.NONE)
if ms.load() != 0:
raise RuntimeError('Cannot load magic header detection')
elf_files = set()
fs_encoding = sys.getfilesystemencoding()
for root, dirs, files in os.walk(workdir.encode(fs_encoding)):
# Filter out object (*.o) files-- we only care about binaries.
entries = (entry for entry in itertools.chain(files, dirs)
if not entry.endswith(b'.o'))
for entry in entries:
path = os.path.join(root, entry)
if os.path.islink(path):
logger.debug('Skipped link {!r} when parsing {!r}'.format(
path, workdir))
continue
file_m = ms.file(path)
if file_m.startswith('ELF') and 'dynamically linked' in file_m:
elf_files.add(path)
dependencies = []
for elf_file in elf_files:
dependencies += libraries.get_dependencies(elf_file)
return set(dependencies)
def _find_dependencies(workdir):
ms = magic.open(magic.NONE)
if ms.load() != 0:
raise RuntimeError('Cannot load magic header detection')
elf_files = set()
fs_encoding = sys.getfilesystemencoding()
for root, dirs, files in os.walk(workdir.encode(fs_encoding)):
# Filter out object (*.o) files-- we only care about binaries.
entries = (entry for entry in itertools.chain(files, dirs)
if not entry.endswith(b'.o'))
for entry in entries:
path = os.path.join(root, entry)
if os.path.islink(path):
logger.debug('Skipped link {!r} when parsing {!r}'.format(
path, workdir))
continue
file_m = ms.file(path)
if file_m.startswith('ELF') and 'dynamically linked' in file_m:
elf_files.add(path)
dependencies = []
for elf_file in elf_files:
dependencies += libraries.get_dependencies(elf_file)
return set(dependencies)
def test_get_libraries_ldd_failure_logs_warning(self):
self.run_output_mock.side_effect = subprocess.CalledProcessError(
1, 'foo', b'bar')
self.assertThat(libraries.get_dependencies('foo'), Equals([]))
self.assertThat(
self.fake_logger.output,
Equals("Unable to determine library dependencies for 'foo'\n"))
def test_get_libraries_ldd_failure_logs_warning(self):
self.run_output_mock.side_effect = subprocess.CalledProcessError(
1, 'foo', b'bar')
self.assertEqual(libraries.get_dependencies('foo'), [])
self.assertEqual(
"Unable to determine library dependencies for 'foo'\n",
self.fake_logger.output)
def test_get_libraries_excludes_slash_snap(self):
lines = [
'foo.so.1 => /lib/foo.so.1 (0xdead)',
'bar.so.2 => /usr/lib/bar.so.2 (0xbeef)',
'barsnap.so.2 => /snap/snapcraft/current/bar.so.2 (0xbeef)',
'/lib/baz.so.2 (0x1234)',
]
self.run_output_mock.return_value = '\t' + '\n\t'.join(lines) + '\n'
libs = libraries.get_dependencies('foo')
self.assertThat(libs, Equals(['/lib/foo.so.1', '/usr/lib/bar.so.2']))
def test_get_libraries_excludes_slash_snap(self):
lines = [
'foo.so.1 => /lib/foo.so.1 (0xdead)',
'bar.so.2 => /usr/lib/bar.so.2 (0xbeef)',
'barsnap.so.2 => /snap/snapcraft/current/bar.so.2 (0xbeef)',
'/lib/baz.so.2 (0x1234)',
]
self.run_output_mock.return_value = '\t' + '\n\t'.join(lines) + '\n'
libs = libraries.get_dependencies('foo')
self.assertThat(libs, Equals(['/lib/foo.so.1', '/usr/lib/bar.so.2']))
def test_get_libraries_filtered_by_system_libraries(self):
self.get_system_libs_mock.return_value = frozenset(['foo.so.1'])
libs = libraries.get_dependencies('foo')
self.assertThat(libs, Equals(['/usr/lib/bar.so.2']))
def test_get_libraries(self):
libs = libraries.get_dependencies('foo')
self.assertThat(libs, Equals(['/lib/foo.so.1', '/usr/lib/bar.so.2']))
def test_fail_gracefully_if_system_libs_not_found(self):
self.assertThat(libraries.get_dependencies('foo'), Equals([]))
def test_get_libraries_filtered_by_system_libraries(self):
self.get_system_libs_mock.return_value = frozenset(['foo.so.1'])
libs = libraries.get_dependencies('foo')
self.assertEqual(libs, ['/usr/lib/bar.so.2'])
def test_get_libraries(self):
libs = libraries.get_dependencies('foo')
self.assertEqual(libs, ['/lib/foo.so.1', '/usr/lib/bar.so.2'])
def test_fail_gracefully_if_system_libs_not_found(self):
self.assertThat(libraries.get_dependencies('foo'), Equals([]))
def test_get_libraries(self):
libs = libraries.get_dependencies("foo")
self.assertEqual(libs, ["/lib/foo.so.1", "/usr/lib/bar.so.2"])
def test_fail_gracefully_if_system_libs_not_found(self):
self.assertEqual(libraries.get_dependencies("foo"), [])