def dpiFwRono(sz):
"""DPI Firewall. Everything is UNSAT since no bad packets make it through"""
other_nodes = ['n_%d' % (x) for x in xrange(sz)]
nodes = ['a', 'b', 'c', 'd', 'fw', 'w']
nodes.extend(other_nodes)
addresses = ['ip_%s' % (n) for n in nodes]
ctx = components.Context (nodes,\
addresses)
dpi_policy = components.DPIPolicy('dpi')
ctx.AddPolicy(dpi_policy)
comp = components.CompressionAlgorithm('gzip')
ctx.AddPolicy(comp)
net = components.Network(ctx)
a = components.EndHost(ctx.a, net, ctx)
b = components.EndHost(ctx.b, net, ctx)
c = components.EndHost(ctx.c, net, ctx)
d = components.EndHost(ctx.d, net, ctx)
fw = components.IPS(dpi_policy, ctx.fw, net, ctx)
w = components.WanOptimizer(comp.compress, ctx.w, net, ctx)
net.setAddressMappings([(a, ctx.ip_a), \
(b, ctx.ip_b), \
(c, ctx.ip_c), \
(d, ctx.ip_d), \
(w, ctx.ip_w), \
(fw, ctx.ip_fw)])
addresses = [ctx.ip_a, ctx.ip_b, ctx.ip_c, ctx.ip_d, ctx.ip_fw]
net.SetIsolationConstraint(a, [fw, w])
net.SetIsolationConstraint(b, [fw, w])
net.SetIsolationConstraint(c, [fw, w])
net.SetIsolationConstraint(d, [fw, w])
net.SetIsolationConstraint(w, [fw])
net.RoutingTable(a, [(x, w) for x in addresses])
net.RoutingTable(b, [(x, w) for x in addresses])
net.RoutingTable(c, [(x, w) for x in addresses])
net.RoutingTable(d, [(x, w) for x in addresses])
net.RoutingTable(w, [(ctx.ip_a, fw), \
(ctx.ip_b, fw), \
(ctx.ip_c, fw), \
(ctx.ip_d, fw)])
net.RoutingTable(fw, [(ctx.ip_a, a), \
(ctx.ip_b, b), \
(ctx.ip_c, c), \
(ctx.ip_d, d)])
nodes = {'a': a, 'b': b, 'c': c, 'd': d, 'w': w, 'fw': fw}
net.Attach(*nodes.values())
class DPIReturn(object):
def __init__(self, net, ctx, dpi_policy, comp, **nodes):
self.net = net
self.ctx = ctx
self.dpi_policy = dpi_policy
self.comp = comp
for k, v in nodes.iteritems():
setattr(self, k, v)
self.check = components.PropertyChecker(ctx, net)
return DPIReturn(net, ctx, dpi_policy, comp, **nodes)
def TrivialWanOptimizerDeOptimizer():
ctx = components.Context(['a', 'b', 'w0', 'w1'], \
['ip_a', 'ip_b', 'ip_w0', 'ip_w1'])
net = components.Network(ctx)
a = components.EndHost(ctx.a, net, ctx)
b = components.EndHost(ctx.b, net, ctx)
gzip = components.CompressionAlgorithm('gzip')
ctx.AddPolicy(gzip)
w0 = components.WanOptimizer(gzip.compress, ctx.w0, net, ctx)
w1 = components.WanOptimizer(gzip.decompress, ctx.w1, net, ctx)
net.setAddressMappings([(a, ctx.ip_a), \
(b, ctx.ip_b), \
(w0, ctx.ip_w0), \
(w1, ctx.ip_w1)])
net.RoutingTable(a, [(ctx.ip_a, a), \
(ctx.ip_b, w0)])
net.RoutingTable(b, [(ctx.ip_a, w0), \
(ctx.ip_b, b)])
net.RoutingTable(w0, [(ctx.ip_a, w1), \
(ctx.ip_b, w1)])
net.RoutingTable(w1, [(ctx.ip_a, a), \
(ctx.ip_b, b)])
net.Attach(a, b, w0, w1)
class TrivialReturn(object):
def __init__(self, net, ctx, a, b, w0, w1):
self.net = net
self.ctx = ctx
self.a = a
self.b = b
self.w0 = w0
self.w1 = w1
self.check = components.PropertyChecker(ctx, net)
return TrivialReturn(net, ctx, a, b, w0, w1)