def test_symbolic(self):
sy = self.state.symbolicate_buffer('+++\0')
s = self._push_string(sy)
ret = strlen(self.state, s)
print solver.get_all_values(self.state.constraints, ret)
self.assertItemsEqual(
range(4), solver.get_all_values(self.state.constraints, ret))
self.state.constrain(sy[0] == 0)
ret = strlen(self.state, s)
self.assertFalse(solver.can_be_true(self.state.constraints, ret != 0))
self._clear_constraints()
self.state.constrain(sy[0] != 0)
self.state.constrain(sy[1] == 0)
ret = strlen(self.state, s)
self.assertFalse(solver.can_be_true(self.state.constraints, ret != 1))
self._clear_constraints()
self.state.constrain(sy[0] != 0)
self.state.constrain(sy[1] != 0)
self.state.constrain(sy[2] == 0)
ret = strlen(self.state, s)
self.assertFalse(solver.can_be_true(self.state.constraints, ret != 2))
self._clear_constraints()
self.state.constrain(sy[0] != 0)
self.state.constrain(sy[1] != 0)
self.state.constrain(sy[2] != 0)
ret = strlen(self.state, s)
self.assertFalse(solver.can_be_true(self.state.constraints, ret != 3))
def test_symbolic(self):
sy = self.state.symbolicate_buffer('+++\0')
s = self._push_string(sy)
ret = strlen(self.state, s)
print solver.get_all_values(self.state.constraints, ret)
self.assertItemsEqual(range(4), solver.get_all_values(self.state.constraints, ret))
self.state.constrain(sy[0] == 0)
ret = strlen(self.state, s)
self.assertFalse(solver.can_be_true(self.state.constraints, ret != 0))
self._clear_constraints()
self.state.constrain(sy[0] != 0)
self.state.constrain(sy[1] == 0)
ret = strlen(self.state, s)
self.assertFalse(solver.can_be_true(self.state.constraints, ret != 1))
self._clear_constraints()
self.state.constrain(sy[0] != 0)
self.state.constrain(sy[1] != 0)
self.state.constrain(sy[2] == 0)
ret = strlen(self.state, s)
self.assertFalse(solver.can_be_true(self.state.constraints, ret != 2))
self._clear_constraints()
self.state.constrain(sy[0] != 0)
self.state.constrain(sy[1] != 0)
self.state.constrain(sy[2] != 0)
ret = strlen(self.state, s)
self.assertFalse(solver.can_be_true(self.state.constraints, ret != 3))
def test_SDIVS3(self):
constraints, world, vm = self._make()
xx = constraints.new_bitvec(256, name="x")
yy = constraints.new_bitvec(256, name="y")
constraints.add(xx == 0x20)
constraints.add(yy == -1)
result = vm.SDIV(xx, yy)
self.assertListEqual(list(map(evm.to_signed, solver.get_all_values(constraints, result))), [-0x20])
def test_SDIVS2(self):
constraints, world, vm = self._make()
xx = constraints.new_bitvec(256, name="x")
yy = constraints.new_bitvec(256, name="y")
constraints.add(xx == 0x20)
constraints.add(yy == 2)
result = vm.SDIV(xx, yy)
self.assertListEqual(solver.get_all_values(constraints, result), [0x10])
