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102e47f14d
drop test_smack_mmap_enforced as is was skipped do to possible licensing issues Signed-off-by: Armin Kuster <akuster808@gmail.com>
418 lines
18 KiB
Python
418 lines
18 KiB
Python
import unittest
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import re
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import os
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import string
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from oeqa.runtime.case import OERuntimeTestCase
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from oeqa.core.decorator.depends import OETestDepends
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from oeqa.runtime.decorator.package import OEHasPackage
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from oeqa.core.decorator.data import skipIfNotFeature
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MAX_LABEL_LEN = 255
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LABEL = "a" * MAX_LABEL_LEN
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class SmackBasicTest(OERuntimeTestCase):
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''' base smack test '''
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@classmethod
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def setUpClass(cls):
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cls.current_label = ""
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cls.uid = 1000
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status, output = cls.tc.target.run("grep smack /proc/mounts | awk '{print $2}'")
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cls.smack_path = output
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@skipIfNotFeature('smack',
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'Test requires smack to be in DISTRO_FEATURES')
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@OEHasPackage(['smack-test'])
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@OETestDepends(['ssh.SSHTest.test_ssh'])
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def test_smack_basic(self):
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status,output = self.target.run("cat /proc/self/attr/current")
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self.current_label = output.strip()
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@OETestDepends(['smack.SmackBasicTest.test_smack_basic'])
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def test_add_access_label(self):
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''' Test if chsmack can correctly set a SMACK label '''
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filename = "/tmp/test_access_label"
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self.target.run("touch %s" %filename)
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status, output = self.target.run("chsmack -a %s %s" %(LABEL, filename))
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self.assertEqual(
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status, 0,
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"Cannot set smack access label. "
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"Status and output: %d %s" %(status, output))
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status, output = self.target.run("chsmack %s" %filename)
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self.target.run("rm %s" %filename)
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m = re.search('(access=")\S+(?=")', output)
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if m is None:
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self.fail("Did not find access attribute")
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else:
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label_retrieved = re.split("access=\"", output)[1][:-1]
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self.assertEqual(
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LABEL, label_retrieved,
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"label not set correctly. expected and gotten: "
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"%s %s" %(LABEL,label_retrieved))
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@OETestDepends(['smack.SmackBasicTest.test_smack_basic'])
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def test_add_exec_label(self):
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'''Test if chsmack can correctly set a SMACK Exec label'''
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filename = "/tmp/test_exec_label"
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self.target.run("touch %s" %filename)
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status, output = self.target.run("chsmack -e %s %s" %(LABEL, filename))
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self.assertEqual(
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status, 0,
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"Cannot set smack exec label. "
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"Status and output: %d %s" %(status, output))
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status, output = self.target.run("chsmack %s" %filename)
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self.target.run("rm %s" %filename)
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m= re.search('(execute=")\S+(?=")', output)
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if m is None:
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self.fail("Did not find execute attribute")
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else:
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label_retrieved = re.split("execute=\"", output)[1][:-1]
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self.assertEqual(
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LABEL, label_retrieved,
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"label not set correctly. expected and gotten: " +
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"%s %s" %(LABEL,label_retrieved))
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@OETestDepends(['smack.SmackBasicTest.test_smack_basic'])
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def test_add_mmap_label(self):
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'''Test if chsmack can correctly set a SMACK mmap label'''
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filename = "/tmp/test_exec_label"
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self.target.run("touch %s" %filename)
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status, output = self.target.run("chsmack -m %s %s" %(LABEL, filename))
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self.assertEqual(
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status, 0,
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"Cannot set smack mmap label. "
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"Status and output: %d %s" %(status, output))
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status, output = self.target.run("chsmack %s" %filename)
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self.target.run("rm %s" %filename)
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m = re.search('(mmap=")\S+(?=")', output)
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if m is None:
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self.fail("Did not find mmap attribute")
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else:
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label_retrieved = re.split("mmap=\"", output)[1][:-1]
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self.assertEqual(
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LABEL, label_retrieved,
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"label not set correctly. expected and gotten: " +
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"%s %s" %(LABEL,label_retrieved))
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@OETestDepends(['smack.SmackBasicTest.test_smack_basic'])
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def test_add_transmutable(self):
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'''Test if chsmack can correctly set a SMACK transmutable mode'''
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directory = "~/test_transmutable"
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self.target.run("mkdir -p %s" %directory)
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status, output = self.target.run("chsmack -t %s" %directory)
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self.assertEqual(status, 0, "Cannot set smack transmutable. "
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"Status and output: %d %s" %(status, output))
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status, output = self.target.run("chsmack %s" %directory)
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self.target.run("rmdir %s" %directory)
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m = re.search('(transmute=")\S+(?=")', output)
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if m is None:
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self.fail("Did not find transmute attribute")
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else:
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label_retrieved = re.split("transmute=\"", output)[1][:-1]
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self.assertEqual(
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"TRUE", label_retrieved,
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"label not set correctly. expected and gotten: " +
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"%s %s" %(LABEL,label_retrieved))
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@OETestDepends(['smack.SmackBasicTest.test_smack_basic'])
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def test_privileged_change_self_label(self):
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'''Test if privileged process (with CAP_MAC_ADMIN privilege)
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can change its label.
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'''
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labelf = "/proc/self/attr/current"
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command = "/bin/sh -c 'echo PRIVILEGED >%s'; cat %s" %(labelf, labelf)
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status, output = self.target.run(
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"/usr/sbin/notroot.py 0 %s %s" %(self.current_label, command))
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self.assertIn("PRIVILEGED", output,
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"Privilege process did not change label.Output: %s" %output)
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@OETestDepends(['smack.SmackBasicTest.test_smack_basic'])
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def test_unprivileged_change_self_label(self):
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'''Test if unprivileged process (without CAP_MAC_ADMIN privilege)
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cannot change its label'''
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command = "/bin/sh -c 'echo %s >/proc/self/attr/current'" %LABEL
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status, output = self.target.run(
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"/usr/sbin/notroot.py %d %s %s"
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%(self.uid, self.current_label, command) +
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" 2>&1 | grep 'Operation not permitted'" )
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self.assertEqual(
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status, 0,
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"Unprivileged process should not be able to change its label")
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@OETestDepends(['smack.SmackBasicTest.test_smack_basic'])
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def test_unprivileged_change_file_label(self):
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'''Test if unprivileged process cannot change file labels'''
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status, chsmack = self.target.run("which chsmack")
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status, touch = self.target.run("which touch")
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filename = "/tmp/test_unprivileged_change_file_label"
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self.target.run("touch %s" % filename)
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self.target.run("/usr/sbin/notroot.py %d %s" %(self.uid, self.current_label))
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status, output = self.target.run(
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"/usr/sbin/notroot.py " +
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"%d unprivileged %s -a %s %s 2>&1 " %(self.uid, chsmack, LABEL, filename) +
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"| grep 'Operation not permitted'" )
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self.target.run("rm %s" % filename)
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self.assertEqual( status, 0, "Unprivileged process changed label for %s" %filename)
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@OETestDepends(['smack.SmackBasicTest.test_smack_basic'])
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def test_load_smack_rule(self):
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'''Test if new smack access rules can be loaded'''
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# old 23 character format requires special spaces formatting
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# 12345678901234567890123456789012345678901234567890123
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ruleA="TheOne TheOther rwxat"
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ruleB="TheOne TheOther r----"
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clean="TheOne TheOther -----"
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modeA = "rwxat"
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modeB = "r"
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status, output = self.target.run('echo -n "%s" > %s/load' %(ruleA, self.smack_path))
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status, output = self.target.run( 'cat %s/load | grep "^TheOne" | grep " TheOther "' %self.smack_path)
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self.assertEqual(status, 0, "Rule A was not added")
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mode = list(filter(bool, output.split(" ")))[2].strip()
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self.assertEqual( mode, modeA, "Mode A was not set correctly; mode: %s" %mode)
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status, output = self.target.run( 'echo -n "%s" > %s/load' %(ruleB, self.smack_path))
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status, output = self.target.run( 'cat %s/load | grep "^TheOne" | grep " TheOther "' %self.smack_path)
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mode = list(filter(bool, output.split(" ")))[2].strip()
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self.assertEqual( mode, modeB, "Mode B was not set correctly; mode: %s" %mode)
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self.target.run('echo -n "%s" > %s/load' %(clean, self.smack_path))
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@OETestDepends(['smack.SmackBasicTest.test_smack_basic'])
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def test_smack_onlycap(self):
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'''Test if smack onlycap label can be set
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test needs to change the running label of the current process,
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so whole test takes places on image
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'''
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status, output = self.target.run("sh /usr/sbin/test_smack_onlycap.sh")
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self.assertEqual(status, 0, output)
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@OETestDepends(['smack.SmackBasicTest.test_smack_basic'])
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def test_smack_netlabel(self):
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test_label="191.191.191.191 TheOne"
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expected_label="191.191.191.191/32 TheOne"
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status, output = self.target.run( "echo -n '%s' > %s/netlabel" %(test_label, self.smack_path))
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self.assertEqual( status, 0, "Netlabel /32 could not be set. Output: %s" %output)
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status, output = self.target.run("cat %s/netlabel" %self.smack_path)
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self.assertIn( expected_label, output, "Did not find expected label in output: %s" %output)
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test_label="253.253.253.0/24 TheOther"
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status, output = self.target.run( "echo -n '%s' > %s/netlabel" %(test_label, self.smack_path))
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self.assertEqual( status, 0, "Netlabel /24 could not be set. Output: %s" %output)
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status, output = self.target.run("cat %s/netlabel" %self.smack_path)
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self.assertIn(
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test_label, output,
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"Did not find expected label in output: %s" %output)
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@OETestDepends(['smack.SmackBasicTest.test_smack_basic'])
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def test_smack_cipso(self):
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'''Test if smack cipso rules can be set'''
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# 12345678901234567890123456789012345678901234567890123456
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ruleA="TheOneA 2 0 "
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ruleB="TheOneB 3 1 55 "
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ruleC="TheOneC 4 2 17 33 "
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status, output = self.target.run(
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"echo -n '%s' > %s/cipso" %(ruleA, self.smack_path))
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self.assertEqual(status, 0,
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"Could not set cipso label A. Ouput: %s" %output)
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status, output = self.target.run(
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"cat %s/cipso | grep '^TheOneA'" %self.smack_path)
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self.assertEqual(status, 0, "Cipso rule A was not set")
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self.assertIn(" 2", output, "Rule A was not set correctly")
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status, output = self.target.run(
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"echo -n '%s' > %s/cipso" %(ruleB, self.smack_path))
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self.assertEqual(status, 0,
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"Could not set cipso label B. Ouput: %s" %output)
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status, output = self.target.run(
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"cat %s/cipso | grep '^TheOneB'" %self.smack_path)
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self.assertEqual(status, 0, "Cipso rule B was not set")
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self.assertIn("/55", output, "Rule B was not set correctly")
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status, output = self.target.run(
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"echo -n '%s' > %s/cipso" %(ruleC, self.smack_path))
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self.assertEqual(
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status, 0,
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"Could not set cipso label C. Ouput: %s" %output)
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status, output = self.target.run(
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"cat %s/cipso | grep '^TheOneC'" %self.smack_path)
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self.assertEqual(status, 0, "Cipso rule C was not set")
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self.assertIn("/17,33", output, "Rule C was not set correctly")
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@OETestDepends(['smack.SmackBasicTest.test_smack_basic'])
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def test_smack_direct(self):
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status, initial_direct = self.target.run(
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"cat %s/direct" %self.smack_path)
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test_direct="17"
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status, output = self.target.run(
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"echo '%s' > %s/direct" %(test_direct, self.smack_path))
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self.assertEqual(status, 0 ,
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"Could not set smack direct. Output: %s" %output)
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status, new_direct = self.target.run("cat %s/direct" %self.smack_path)
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# initial label before checking
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status, output = self.target.run(
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"echo '%s' > %s/direct" %(initial_direct, self.smack_path))
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self.assertEqual(
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test_direct, new_direct.strip(),
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"Smack direct label does not match.")
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@OETestDepends(['smack.SmackBasicTest.test_smack_basic'])
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def test_smack_ambient(self):
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test_ambient = "test_ambient"
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status, initial_ambient = self.target.run("cat %s/ambient" %self.smack_path)
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status, output = self.target.run(
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"echo '%s' > %s/ambient" %(test_ambient, self.smack_path))
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self.assertEqual(status, 0,
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"Could not set smack ambient. Output: %s" %output)
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status, output = self.target.run("cat %s/ambient" %self.smack_path)
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# Filter '\x00', which is sometimes added to the ambient label
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new_ambient = ''.join(filter(lambda x: x in string.printable, output))
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initial_ambient = ''.join(filter(lambda x: x in string.printable, initial_ambient))
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status, output = self.target.run(
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"echo '%s' > %s/ambient" %(initial_ambient, self.smack_path))
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self.assertEqual(
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test_ambient, new_ambient.strip(),
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"Ambient label does not match")
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@OETestDepends(['smack.SmackBasicTest.test_smack_basic'])
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def test_smackload(self):
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'''Test if smackload command works'''
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rule="testobject testsubject rwx"
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status, output = self.target.run("echo -n '%s' > /tmp/rules" %rule)
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status, output = self.target.run("smackload /tmp/rules")
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self.assertEqual( status, 0, "Smackload failed to load rule. Output: %s" %output)
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status, output = self.target.run( "cat %s/load | grep '%s'" %(self.smack_path, rule))
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self.assertEqual(status, 0, "Smackload rule was loaded correctly")
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@OETestDepends(['smack.SmackBasicTest.test_smack_basic'])
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def test_smackcipso(self):
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'''Test if smackcipso command works'''
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# 12345678901234567890123456789012345678901234567890123456
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rule="cipsolabel 2 2 "
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status, output = self.target.run("echo '%s' | smackcipso" %rule)
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self.assertEqual( status, 0, "Smackcipso failed to load rule. Output: %s" %output)
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status, output = self.target.run(
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"cat %s/cipso | grep 'cipsolabel'" %self.smack_path)
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self.assertEqual(status, 0, "smackcipso rule was loaded correctly")
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self.assertIn( "2/2", output, "Rule was not set correctly. Got: %s" %output)
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@OETestDepends(['smack.SmackBasicTest.test_smack_basic'])
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def test_smack_enforce_file_access(self):
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'''Test if smack file access is enforced (rwx)
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test needs to change the running label of the current process,
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so whole test takes places on image
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'''
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status, output = self.target.run("sh /usr/sbin/smack_test_file_access.sh")
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self.assertEqual(status, 0, output)
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@OETestDepends(['smack.SmackBasicTest.test_smack_basic'])
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def test_smack_transmute_dir(self):
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'''Test if smack transmute attribute works
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test needs to change the running label of the current process,
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so whole test takes places on image
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'''
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test_dir = "/tmp/smack_transmute_dir"
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label="transmute_label"
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status, initial_label = self.target.run("cat /proc/self/attr/current")
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self.target.run("mkdir -p %s" % test_dir)
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self.target.run("chsmack -a %s %s" % (label, test_dir))
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self.target.run("chsmack -t %s" % test_dir)
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self.target.run("echo -n '%s %s rwxat' | smackload" %(initial_label, label) )
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self.target.run("touch %s/test" % test_dir)
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status, output = self.target.run("chsmack %s/test" % test_dir)
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self.assertIn( 'access="%s"' %label, output,
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"Did not get expected label. Output: %s" % output)
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@OETestDepends(['smack.SmackBasicTest.test_smack_basic'])
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def test_smack_tcp_sockets(self):
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'''Test if smack is enforced on tcp sockets
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whole test takes places on image, depends on tcp_server/tcp_client'''
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status, output = self.target.run("sh /usr/sbin/test_smack_tcp_sockets.sh")
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self.assertEqual(status, 0, output)
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@OETestDepends(['smack.SmackBasicTest.test_smack_basic'])
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def test_smack_udp_sockets(self):
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'''Test if smack is enforced on udp sockets
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whole test takes places on image, depends on udp_server/udp_client'''
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status, output = self.target.run("sh /usr/sbin/test_smack_udp_sockets.sh")
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self.assertEqual(status, 0, output)
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@OETestDepends(['smack.SmackBasicTest.test_smack_basic'])
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def test_smack_labels(self):
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'''Check for correct Smack labels.'''
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expected = '''
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/tmp/ access="*"
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/etc/ access="System::Shared" transmute="TRUE"
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/etc/passwd access="System::Shared"
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/etc/terminfo access="System::Shared" transmute="TRUE"
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/etc/skel/ access="System::Shared" transmute="TRUE"
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/etc/skel/.profile access="System::Shared"
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/var/log/ access="System::Log" transmute="TRUE"
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/var/tmp/ access="*"
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'''
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files = ' '.join([x.split()[0] for x in expected.split('\n') if x])
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files_wildcard = ' '.join([x + '/*' for x in files.split()])
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# Auxiliary information.
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status, output = self.target.run(
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'set -x; mount; ls -l -d %s; find %s | xargs ls -d -l; find %s | xargs chsmack' % (
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' '.join([x.rstrip('/') for x in files.split()]), files, files
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)
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)
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msg = "File status:\n" + output
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status, output = self.target.run('chsmack %s' % files)
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self.assertEqual(
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status, 0, msg="status and output: %s and %s\n%s" % (status,output, msg))
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self.longMessage = True
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self.maxDiff = None
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self.assertEqual(output.strip().split('\n'), expected.strip().split('\n'), msg=msg)
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