def get_solver(self):
# Skip these test for now because of a problem with pysmt
raise nose.SkipTest()
solver = claripy.SolverPortfolio(solvers=[
claripy.SolverComposite(
template_solver_string=claripy.SolverCompositeChild(
backend=claripy.backend_manager.backends.smtlib_cvc4)),
claripy.SolverComposite(
template_solver_string=claripy.SolverCompositeChild(
backend=claripy.backend_manager.backends.smtlib_z3)),
claripy.SolverComposite(
template_solver_string=claripy.SolverCompositeChild(
backend=claripy.backend_manager.backends.smtlib_z3str)),
])
return solver
def test_composite_solver_with_strings():
s = claripy.SolverComposite(
template_solver_string=claripy.SolverCompositeChild(
backend=claripy.backend_manager.backends.smtlib_cvc4))
x = claripy.BVS("x", 32)
y = claripy.BVS("y", 32)
z = claripy.BVS("z", 32)
str_1 = claripy.StringS("sym_str_1", 1024)
c = claripy.And(x == 1, y == 2, z == 3,
str_1 == claripy.StringV("cavallo"))
s.add(c)
nose.tools.assert_equal(len(s._solver_list), 4)
nose.tools.assert_true(s.satisfiable())
nose.tools.assert_equal(list(s.eval(str_1, 1)), ["cavallo"])
def _solver(self):
"""
Creates or gets a Claripy solver, based on the state options.
"""
if self._stored_solver is not None:
return self._stored_solver
track = o.CONSTRAINT_TRACKING_IN_SOLVER in self.state.options
approximate_first = o.APPROXIMATE_FIRST in self.state.options
if o.STRINGS_ANALYSIS in self.state.options:
if 'smtlib_cvc4' in backend_manager.backends._backends_by_name:
our_backend = backend_manager.backends.smtlib_cvc4
elif 'smtlib_z3' in backend_manager.backends._backends_by_name:
our_backend = backend_manager.backends.smtlib_z3
elif 'smtlib_abc' in backend_manager.backends._backends_by_name:
our_backend = backend_manager.backends.smtlib_abc
else:
l.error(
"Cannot find a suitable string solver. Please ensure you have installed a string solver that "
"angr supports, and have imported the corresponding solver backend in claripy. You can try "
"adding \"from claripy.backends.backend_smtlib_solvers import *\" at the beginning of your "
"script.")
raise ValueError("Cannot find a suitable string solver")
if o.COMPOSITE_SOLVER in self.state.options:
self._stored_solver = claripy.SolverComposite(
template_solver_string=claripy.SolverCompositeChild(
backend=our_backend, track=track))
elif o.ABSTRACT_SOLVER in self.state.options:
self._stored_solver = claripy.SolverVSA()
elif o.SYMBOLIC in self.state.options and o.REPLACEMENT_SOLVER in self.state.options:
self._stored_solver = claripy.SolverReplacement(auto_replace=False)
elif o.SYMBOLIC in self.state.options and o.CACHELESS_SOLVER in self.state.options:
self._stored_solver = claripy.SolverCacheless(track=track)
elif o.SYMBOLIC in self.state.options and o.COMPOSITE_SOLVER in self.state.options:
self._stored_solver = claripy.SolverComposite(track=track)
elif o.SYMBOLIC in self.state.options and any(
opt in self.state.options for opt in o.approximation):
self._stored_solver = claripy.SolverHybrid(
track=track, approximate_first=approximate_first)
elif o.HYBRID_SOLVER in self.state.options:
self._stored_solver = claripy.SolverHybrid(
track=track, approximate_first=approximate_first)
elif o.SYMBOLIC in self.state.options:
self._stored_solver = claripy.Solver(track=track)
else:
self._stored_solver = claripy.SolverConcrete()
return self._stored_solver
def _solver(self):
"""
Creates or gets a Claripy solver, based on the state options.
"""
if self._stored_solver is not None:
return self._stored_solver
track = o.CONSTRAINT_TRACKING_IN_SOLVER in self.state.options
approximate_first = o.APPROXIMATE_FIRST in self.state.options
if o.STRINGS_ANALYSIS in self.state.options:
if 'smtlib_cvc4' in backend_manager.backends._backends_by_name:
our_backend = backend_manager.backends.smtlib_cvc4
elif 'smtlib_z3' in backend_manager.backends._backends_by_name:
our_backend = backend_manager.backends.smtlib_z3
elif 'smtlib_abc' in backend_manager.backends._backends_by_name:
our_backend = backend_manager.backends.smtlib_abc
else:
raise ValueError("Could not find suitable string solver!")
if o.COMPOSITE_SOLVER in self.state.options:
self._stored_solver = claripy.SolverComposite(
template_solver_string=claripy.SolverCompositeChild(
backend=our_backend, track=track))
elif o.ABSTRACT_SOLVER in self.state.options:
self._stored_solver = claripy.SolverVSA()
elif o.SYMBOLIC in self.state.options and o.REPLACEMENT_SOLVER in self.state.options:
self._stored_solver = claripy.SolverReplacement(auto_replace=False)
elif o.SYMBOLIC in self.state.options and o.CACHELESS_SOLVER in self.state.options:
self._stored_solver = claripy.SolverCacheless(track=track)
elif o.SYMBOLIC in self.state.options and o.COMPOSITE_SOLVER in self.state.options:
self._stored_solver = claripy.SolverComposite(track=track)
elif o.SYMBOLIC in self.state.options and any(
opt in self.state.options for opt in o.approximation):
self._stored_solver = claripy.SolverHybrid(
track=track, approximate_first=approximate_first)
elif o.HYBRID_SOLVER in self.state.options:
self._stored_solver = claripy.SolverHybrid(
track=track, approximate_first=approximate_first)
elif o.SYMBOLIC in self.state.options:
self._stored_solver = claripy.Solver(track=track)
else:
self._stored_solver = claripy.SolverConcrete()
return self._stored_solver
