def test_state(self):
constraints = ConstraintSet()
initial_state = State(constraints, FakePlatform())
arr = initial_state.symbolicate_buffer('+' * 100, label='SYMBA')
initial_state.constrain(arr[0] > 0x41)
self.assertTrue(len(initial_state.constraints.declarations) == 1)
with initial_state as new_state:
self.assertTrue(len(initial_state.constraints.declarations) == 1)
self.assertTrue(len(new_state.constraints.declarations) == 1)
arrb = new_state.symbolicate_buffer('+' * 100, label='SYMBB')
self.assertTrue(len(initial_state.constraints.declarations) == 1)
self.assertTrue(len(new_state.constraints.declarations) == 1)
new_state.constrain(arrb[0] > 0x42)
self.assertTrue(len(new_state.constraints.declarations) == 2)
self.assertTrue(len(initial_state.constraints.declarations) == 1)
class StateTest(unittest.TestCase):
def setUp(self):
l = linux.Linux('/bin/ls')
self.state = State(ConstraintSet(), l)
def test_solve_one(self):
val = 42
expr = BitVecVariable(32, 'tmp')
self.state.constrain(expr == val)
solved = self.state.solve_one(expr)
self.assertEqual(solved, val)
def test_solve_n(self):
expr = BitVecVariable(32, 'tmp')
self.state.constrain(expr > 4)
self.state.constrain(expr < 7)
solved = self.state.solve_n(expr, 2)
self.assertEqual(solved, [5, 6])
def test_solve_n2(self):
expr = BitVecVariable(32, 'tmp')
self.state.constrain(expr > 4)
self.state.constrain(expr < 100)
solved = self.state.solve_n(expr, 5)
self.assertEqual(len(solved), 5)
def test_policy_one(self):
expr = BitVecVariable(32, 'tmp')
self.state.constrain(expr > 0)
self.state.constrain(expr < 100)
solved = self.state.concretize(expr, 'ONE')
self.assertEqual(len(solved), 1)
self.assertIn(solved[0], xrange(100))
def test_state(self):
constraints = ConstraintSet()
initial_state = State(constraints, FakePlatform())
arr = initial_state.symbolicate_buffer('+' * 100, label='SYMBA')
initial_state.constrain(arr[0] > 0x41)
self.assertTrue(len(initial_state.constraints.declarations) == 1)
with initial_state as new_state:
self.assertTrue(len(initial_state.constraints.declarations) == 1)
self.assertTrue(len(new_state.constraints.declarations) == 1)
arrb = new_state.symbolicate_buffer('+' * 100, label='SYMBB')
self.assertTrue(len(initial_state.constraints.declarations) == 1)
self.assertTrue(len(new_state.constraints.declarations) == 1)
new_state.constrain(arrb[0] > 0x42)
self.assertTrue(len(new_state.constraints.declarations) == 2)
self.assertTrue(len(initial_state.constraints.declarations) == 1)
def test_new_symbolic_buffer(self):
length = 64
expr = self.state.new_symbolic_buffer(length)
self.assertEqual(len(expr), length)
def test_new_symbolic_value(self):
length = 64
expr = self.state.new_symbolic_value(length)
self.assertEqual(expr.size, length)
def test_new_bad_symbolic_value(self):
length = 62
with self.assertRaises(Exception):
expr = self.state.new_symbolic_value(length)
def test_record_branches(self):
branch = 0x80488bb
target = 0x8048997
fallthrough = 0x80488c1
self.state.last_pc = (0, branch)
self.state.record_branches([target, fallthrough])
self.assertEqual(self.state.branches[(branch, target)], 1)
self.assertEqual(self.state.branches[(branch, fallthrough)], 1)
self.state.record_branches([target, fallthrough])
self.assertEqual(self.state.branches[(branch, target)], 2)
self.assertEqual(self.state.branches[(branch, fallthrough)], 2)