945bc8853b
On systems without SELinux (eg. some continuous integration
environments), "make test" fails with:
Traceback (most recent call last):
File "test_sandbox.py", line 110, in <module>
if selinux.security_getenforce() == 1:
FileNotFoundError: [Errno 2] No such file or directory
This is exception is thrown because the selinuxfs file system is not
mounted.
Detect such configurations using selinux.is_selinux_enabled() and skip
the test when SELinux is disabled accordingly.
Signed-off-by: Nicolas Iooss <nicolas.iooss@m4x.org>
113 lines
4.3 KiB
Python
113 lines
4.3 KiB
Python
import unittest
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import os
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import shutil
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import sys
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from tempfile import mkdtemp
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from subprocess import Popen, PIPE
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class SandboxTests(unittest.TestCase):
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def assertDenied(self, err):
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self.assertTrue(b'Permission denied' in err,
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'"Permission denied" not found in %r' % err)
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def assertNotFound(self, err):
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self.assertTrue(b'not found' in err,
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'"not found" not found in %r' % err)
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def assertFailure(self, status):
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self.assertTrue(status != 0,
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'"Succeeded when it should have failed')
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def assertSuccess(self, status, err):
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self.assertTrue(status == 0,
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'"Sandbox should have succeeded for this test %r' % err)
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def test_simple_success(self):
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"Verify that we can read file descriptors handed to sandbox"
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p1 = Popen(['cat', '/etc/passwd'], stdout=PIPE)
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p2 = Popen([sys.executable, 'sandbox', 'grep', 'root'], stdin=p1.stdout, stdout=PIPE)
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p1.stdout.close()
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out, err = p2.communicate()
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self.assertTrue(b'root' in out)
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def test_cant_kill(self):
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"Verify that we cannot send kill signal in the sandbox"
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pid = os.getpid()
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p = Popen([sys.executable, 'sandbox', 'kill', '-HUP', str(pid)], stdout=PIPE, stderr=PIPE)
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out, err = p.communicate()
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self.assertDenied(err)
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def test_cant_ping(self):
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"Verify that we can't ping within the sandbox"
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p = Popen([sys.executable, 'sandbox', 'ping', '-c 1 ', '127.0.0.1'], stdout=PIPE, stderr=PIPE)
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out, err = p.communicate()
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self.assertDenied(err)
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def test_cant_mkdir(self):
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"Verify that we can't mkdir within the sandbox"
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p = Popen([sys.executable, 'sandbox', 'mkdir', '~/test'], stdout=PIPE, stderr=PIPE)
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out, err = p.communicate()
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self.assertFailure(p.returncode)
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def test_cant_list_homedir(self):
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"Verify that we can't list homedir within the sandbox"
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p = Popen([sys.executable, 'sandbox', 'ls', '~'], stdout=PIPE, stderr=PIPE)
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out, err = p.communicate()
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self.assertFailure(p.returncode)
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def test_cant_send_mail(self):
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"Verify that we can't send mail within the sandbox"
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p = Popen([sys.executable, 'sandbox', 'mail'], stdout=PIPE, stderr=PIPE)
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out, err = p.communicate()
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self.assertDenied(err)
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def test_cant_sudo(self):
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"Verify that we can't run sudo within the sandbox"
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p = Popen([sys.executable, 'sandbox', 'sudo'], stdout=PIPE, stderr=PIPE)
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out, err = p.communicate()
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self.assertFailure(p.returncode)
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def test_mount(self):
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"Verify that we mount a file system"
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p = Popen([sys.executable, 'sandbox', '-M', 'id'], stdout=PIPE, stderr=PIPE)
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out, err = p.communicate()
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self.assertSuccess(p.returncode, err)
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def test_set_level(self):
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"Verify that we set level a file system"
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p = Popen([sys.executable, 'sandbox', '-l', 's0', 'id'], stdout=PIPE, stderr=PIPE)
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out, err = p.communicate()
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self.assertSuccess(p.returncode, err)
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def test_homedir(self):
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"Verify that we set homedir a file system"
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homedir = mkdtemp(dir=".", prefix=".sandbox_test")
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p = Popen([sys.executable, 'sandbox', '-H', homedir, '-M', 'id'], stdout=PIPE, stderr=PIPE)
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out, err = p.communicate()
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shutil.rmtree(homedir)
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self.assertSuccess(p.returncode, err)
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def test_tmpdir(self):
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"Verify that we set tmpdir a file system"
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tmpdir = mkdtemp(dir="/tmp", prefix=".sandbox_test")
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p = Popen([sys.executable, 'sandbox', '-T', tmpdir, '-M', 'id'], stdout=PIPE, stderr=PIPE)
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out, err = p.communicate()
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shutil.rmtree(tmpdir)
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self.assertSuccess(p.returncode, err)
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def test_include_file(self):
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"Verify that sandbox can copy a file in the sandbox home and use it"
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p = Popen([sys.executable, 'sandbox', '-i' ,'test_sandbox.py' , '-M', '/bin/cat', 'test_sandbox.py'],
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stdout=PIPE, stderr=PIPE)
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out, err = p.communicate()
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self.assertSuccess(p.returncode, err)
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if __name__ == "__main__":
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import selinux
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if selinux.is_selinux_enabled() and selinux.security_getenforce() == 1:
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unittest.main()
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else:
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print("SELinux must be in enforcing mode for this test")
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