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test_reachability.py
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test_reachability.py
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# Fudge the python path
import sys
import os
import pandas as pd
import pytest
PACKAGE_PARENT = "../../../"
SCRIPT_DIR = os.path.dirname(
os.path.realpath(os.path.join(os.getcwd(), os.path.expanduser(__file__)))
)
sys.path.append(os.path.normpath(os.path.join(SCRIPT_DIR, PACKAGE_PARENT)))
# end fudge python path
from plugins.batfish.includes.reachability_check import ReachabilityCheck
from plugins.batfish.includes.batfish import Batfish
class ReachabilityResult:
def __init__(
self,
):
self.flow_result: FlowResult = None
self.trace_result: list[TraceResult] = []
pass
class FlowResult(ReachabilityResult):
def __init__(
self,
src_ip=None,
dst_ip=None,
ip_protocol=None,
ingress_node=None,
ingress_vrf=None,
):
self.src_ip = src_ip
# class TraceResult(ReachabilityResult):
class TraceResult(ReachabilityResult):
def __init__(
self,
):
self.trace_disposition: str
self.hops: list[Hop] = []
class Hop(TraceResult):
def __init__(
self,
):
self.node: str
self.steps: list[Step] = []
class Step(Hop):
def __init__(
self,
):
self.action: str
self.details: list[Detail] = []
class Detail(Step):
def __init__(
self,
):
self.originating_vrf: str
self.arp_ip: str
self.output_interface: str
self.routes: list[Route] = []
self.filter: str
self.filter_type: str
self.resolve_next_hop: str
self.flow = Flow()
class Route(Detail):
def __init__(
self,
):
self.network: str
self.next_Hop: str
self.via_protocol: str
pass
class Flow(Detail):
def __init__(
self,
):
self.src_ip: str
self.dst_ip: str
self.dst_port: str
self.ingress_node: str
self.ingress_interface: str
self.ingress_vrf: str
self.ip_protocol: str
pass
start_location = "spoke1"
destination_ip = "172.16.4.2"
@pytest.mark.batfish
def main():
pd.set_option("max_rows", None)
pd.set_option("max_columns", None)
b = Batfish()
b.init_batfish(
snapshot_folder="/shared/data/storage/firewall-configs/snapshot",
)
rc = ReachabilityCheck(b_fish=b)
result = rc.check(
start_node=start_location,
destination_ip=destination_ip,
)
# separate out Flow and Traces
flow = result.iloc[0]["Flow"]
traces = result.iloc[0]["Traces"]
rr = ReachabilityResult()
walk_flow(flow, rr)
walk_traces(traces, rr)
def walk_flow(flow, rr):
print(f"Flow Source IP: {flow.srcIp}")
print(f"Flow Dest IP: {flow.dstIp}")
print(f"Flow IP protocol: {flow.ipProtocol}")
print(f"Flow Ingress Node: {flow.ingressNode}")
print(f"Flow Ingress VRF: {flow.ingressVrf}")
rr.flow_result = FlowResult()
rr.flow_result.src_ip = flow.srcIp
rr.flow_result.dst_ip = flow.dstIp
rr.flow_result.ip_protocol = flow.ipProtocol
rr.flow_result.ingress_node = flow.ingressNode
rr.flow_result.ingress_vrf = flow.ingressVrf
def walk_traces(traces, rr):
tr = TraceResult()
for trace in traces:
print(f"Trace dispostion: {trace.disposition}")
tr.trace_disposition = trace.disposition
for hop in trace:
print(f"hop node: {hop.node}")
tr.hops = []
new_hop = Hop()
for step in hop:
new_step = Step()
if step.action == "ORIGINATED":
new_step.action = "ORIGINATED"
new_detail = Detail()
print(f"step detail originating VRF: {step.detail.originatingVrf}")
# add to detail
new_detail.originating_vrf = step.detail.originatingVrf
# tr.hops[enum].steps.append(new_step)
new_step.details.append(new_detail)
elif step.action == "FORWARDED":
new_step.action = "FORWARDED"
new_detail = Detail()
print(f"Arp IP: {step.detail.arpIp}")
new_detail.arp_ip = step.detail.arpIp
print(f"Output Interface: {step.detail.outputInterface}")
new_detail.output_interface = step.detail.outputInterface
for route in step.detail.routes:
new_route = Route()
# Put assertions in here?
print(f"Network: {route['network']}")
new_route.network = route["network"]
print(f"Next-hop: {route['nextHopIp']}")
new_route.next_Hop = route["nextHopIp"]
print(f"by Protocol: {route['protocol']}")
new_route.via_protocol = route["protocol"]
new_detail.routes.append(new_route)
new_step.details.append(new_detail)
elif step.action == "PERMITTED":
new_step.action = "PERMITTED"
new_detail = Detail()
new_flow = Flow()
print(f"Filter: {step.detail.filter}")
new_detail.filter = step.detail.filter
print(f"Filter Type: {step.detail.filterType}")
new_detail.filter_type = step.detail.filterType
print(f"Dest IP: {step.detail.flow.dstIp}")
new_flow.dst_ip = step.detail.flow.dstIp
print(f"Dest Port: {step.detail.flow.dstPort}")
new_flow.dst_port = step.detail.flow.dstPort
print(f"Ingress Node: {step.detail.flow.ingressNode}")
new_flow.ingress_node = step.detail.flow.ingressNode
print(f"Ingress Interface: {step.detail.flow.ingressInterface}")
new_flow.ingress_interface = step.detail.flow.ingressInterface
print(f"Ingress VRF: {step.detail.flow.ingressVrf}")
new_flow.ingress_vrf = step.detail.flow.ingressVrf
print(f"IP Protocol: {step.detail.flow.ipProtocol}")
new_flow.ip_protocol = step.detail.flow.ipProtocol
print(f"Source IP: {step.detail.flow.srcIp}")
new_flow.src_ip = step.detail.flow.srcIp
new_detail.flow = new_flow
new_step.details.append(new_detail)
elif step.action == "TRANSMITTED":
new_step.action = "TRANSMITTED"
new_detail = Detail()
print(f"Output Interface: {step.detail.outputInterface}")
new_detail.output_interface = step.detail.outputInterface
new_step.details.append(new_detail)
elif step.action == "EXITS_NETWORK":
new_step.action = "EXITS_NETWORK"
new_detail = Detail()
print(f"Output Interface: {step.detail.outputInterface}")
new_detail.output_interface = step.detail.outputInterface
print(f"Next-hop IP: {step.detail.resolvedNexthopIp}")
new_detail.resolve_next_hop = step.detail.resolvedNexthopIp
new_step.details.append(new_detail)
# append steps to hop
new_hop.steps.append(new_step)
# add new hop to traceroute
tr.hops.append(new_hop)
# add to the list of trace results
rr.trace_result.append(tr)
class TraceResult:
def __init__(self, traces=None, flow=None) -> None:
pass
self.traces = traces
self.flow = flow
if __name__ == "__main__":
main()