def route(self, dst=None, verbose=conf.verb):
"""Returns the IPv4 routes to a host.
parameters:
- dst: the IPv4 of the destination host
returns: (iface, output_ip, gateway_ip)
- iface: the interface used to connect to the host
- output_ip: the outgoing IP that will be used
- gateway_ip: the gateway IP that will be used
"""
dst = dst or "0.0.0.0" # Enable route(None) to return default route
if isinstance(dst, bytes):
try:
dst = plain_str(dst)
except UnicodeDecodeError:
raise TypeError("Unknown IP address input (bytes)")
if dst in self.cache:
return self.cache[dst]
# Transform "192.168.*.1-5" to one IP of the set
_dst = dst.split("/")[0].replace("*", "0")
while True:
idx = _dst.find("-")
if idx < 0:
break
m = (_dst[idx:] + ".").find(".")
_dst = _dst[:idx] + _dst[idx + m:]
atol_dst = atol(_dst)
paths = []
for d, m, gw, i, a, me in self.routes:
if not a: # some interfaces may not currently be connected
continue
aa = atol(a)
if aa == atol_dst:
paths.append((0xffffffff, 1, (scapy.consts.LOOPBACK_INTERFACE,
a, "0.0.0.0")) # noqa: E501
)
if (atol_dst & m) == (d & m):
paths.append((m, me, (i, a, gw)))
if not paths:
if verbose:
warning("No route found (no default route?)")
return scapy.consts.LOOPBACK_INTERFACE, "0.0.0.0", "0.0.0.0"
# Choose the more specific route
# Sort by greatest netmask and use metrics as a tie-breaker
paths.sort(key=lambda x: (-x[0], x[1]))
# Return interface
ret = paths[0][2]
self.cache[dst] = ret
return ret
def route(self, dst=None, verbose=conf.verb):
"""Returns the IPv4 routes to a host.
parameters:
- dst: the IPv4 of the destination host
returns: (iface, output_ip, gateway_ip)
- iface: the interface used to connect to the host
- output_ip: the outgoing IP that will be used
- gateway_ip: the gateway IP that will be used
"""
dst = dst or "0.0.0.0" # Enable route(None) to return default route
if isinstance(dst, bytes):
try:
dst = plain_str(dst)
except UnicodeDecodeError:
raise TypeError("Unknown IP address input (bytes)")
if dst in self.cache:
return self.cache[dst]
# Transform "192.168.*.1-5" to one IP of the set
_dst = dst.split("/")[0].replace("*", "0")
while True:
idx = _dst.find("-")
if idx < 0:
break
m = (_dst[idx:] + ".").find(".")
_dst = _dst[:idx] + _dst[idx + m:]
atol_dst = atol(_dst)
paths = []
for d, m, gw, i, a, me in self.routes:
if not a: # some interfaces may not currently be connected
continue
aa = atol(a)
if aa == atol_dst:
paths.append(
(0xffffffff, 1, (scapy.consts.LOOPBACK_INTERFACE, a, "0.0.0.0")) # noqa: E501
)
if (atol_dst & m) == (d & m):
paths.append((m, me, (i, a, gw)))
if not paths:
if verbose:
warning("No route found (no default route?)")
return scapy.consts.LOOPBACK_INTERFACE, "0.0.0.0", "0.0.0.0"
# Choose the more specific route
# Sort by greatest netmask and use metrics as a tie-breaker
paths.sort(key=lambda x: (-x[0], x[1]))
# Return interface
ret = paths[0][2]
self.cache[dst] = ret
return ret
def route(self, dest, verbose=None):
if dest is None:
dest = "0.0.0.0"
elif isinstance(dest, bytes):
try:
dest = plain_str(dest)
except UnicodeDecodeError:
dest = "0.0.0.0"
if dest in self.cache:
return self.cache[dest]
if verbose is None:
verbose = conf.verb
# Transform "192.168.*.1-5" to one IP of the set
dst = dest.split("/")[0]
dst = dst.replace("*", "0")
while True:
l = dst.find("-")
if l < 0:
break
m = (dst[l:] + ".").find(".")
dst = dst[:l] + dst[l + m:]
dst = atol(dst)
paths = []
for d, m, gw, i, a, me in self.routes:
if not a: # some interfaces may not currently be connected
continue
aa = atol(a)
if aa == dst:
paths.append((0xffffffff, 1, (scapy.consts.LOOPBACK_INTERFACE,
a, "0.0.0.0")) # noqa: E501
)
if (dst & m) == (d & m):
paths.append((m, me, (i, a, gw)))
if not paths:
if verbose:
warning("No route found (no default route?)")
return scapy.consts.LOOPBACK_INTERFACE, "0.0.0.0", "0.0.0.0"
# Choose the more specific route
# Sort by greatest netmask
paths.sort(key=lambda x: x[0], reverse=True)
# Get all paths having the (same) greatest mask
paths = [i for i in paths if i[0] == paths[0][0]]
# Tie-breaker: Metrics
paths.sort(key=lambda x: x[1])
# Return interface
ret = paths[0][2]
self.cache[dest] = ret
return ret
def route(self, dest, verbose=None):
if dest is None:
dest = "0.0.0.0"
elif isinstance(dest, bytes):
try:
dest = plain_str(dest)
except UnicodeDecodeError:
dest = "0.0.0.0"
if dest in self.cache:
return self.cache[dest]
if verbose is None:
verbose = conf.verb
# Transform "192.168.*.1-5" to one IP of the set
dst = dest.split("/")[0]
dst = dst.replace("*", "0")
while True:
l = dst.find("-")
if l < 0:
break
m = (dst[l:] + ".").find(".")
dst = dst[:l] + dst[l + m:]
dst = atol(dst)
pathes = []
for d, m, gw, i, a, me in self.routes:
if not a: # some interfaces may not currently be connected
continue
aa = atol(a)
if aa == dst:
pathes.append(
(0xffffffff, 1, (scapy.consts.LOOPBACK_INTERFACE, a, "0.0.0.0")) # noqa: E501
)
if (dst & m) == (d & m):
pathes.append((m, me, (i, a, gw)))
if not pathes:
if verbose:
warning("No route found (no default route?)")
return scapy.consts.LOOPBACK_INTERFACE, "0.0.0.0", "0.0.0.0"
# Choose the more specific route
# Sort by greatest netmask
pathes.sort(key=lambda x: x[0], reverse=True)
# Get all pathes having the (same) greatest mask
pathes = [i for i in pathes if i[0] == pathes[0][0]]
# Tie-breaker: Metrics
pathes.sort(key=lambda x: x[1])
# Return interface
ret = pathes[0][2]
self.cache[dest] = ret
return ret