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"""
IP Types
"""
import logging
from ipaddress import ip_address
from socket import AF_INET, AF_INET6
from vpp_papi import VppEnum
try:
text_type = unicode
except NameError:
text_type = str
_log = logging.getLogger(__name__)
class DpoProto:
DPO_PROTO_IP4 = 0
DPO_PROTO_IP6 = 1
DPO_PROTO_MPLS = 2
DPO_PROTO_ETHERNET = 3
DPO_PROTO_BIER = 4
DPO_PROTO_NSH = 5
INVALID_INDEX = 0xffffffff
class VppIpAddressUnion():
def __init__(self, addr):
self.addr = addr
self.ip_addr = ip_address(text_type(self.addr))
def encode(self):
if self.version == 6:
return {'ip6': self.ip_addr.packed}
else:
return {'ip4': self.ip_addr.packed}
@property
def version(self):
return self.ip_addr.version
@property
def address(self):
return self.addr
@property
def length(self):
return self.ip_addr.max_prefixlen
@property
def bytes(self):
return self.ip_addr.packed
def __eq__(self, other):
if isinstance(other, self.__class__):
return self.ip_addr == other.ip_addr
elif hasattr(other, "ip4") and hasattr(other, "ip6"):
# vl_api_address_union_t
if 4 == self.version:
return self.ip_addr.packed == other.ip4
else:
return self.ip_addr.packed == other.ip6
else:
_log.error("Comparing VppIpAddressUnions:%s"
" with incomparable type: %s",
self, other)
return NotImplemented
class VppIpAddress():
def __init__(self, addr):
self.addr = VppIpAddressUnion(addr)
def encode(self):
if self.addr.version == 6:
return {
'af': VppEnum.vl_api_address_family_t.ADDRESS_IP6,
'un': self.addr.encode()
}
else:
return {
'af': VppEnum.vl_api_address_family_t.ADDRESS_IP4,
'un': self.addr.encode()
}
def __eq__(self, other):
if isinstance(other, self.__class__):
return self.addr == other.addr
elif hasattr(other, "af") and hasattr(other, "un"):
# a vp_api_address_t
if 4 == self.version:
return other.af == \
VppEnum.vl_api_address_family_t.ADDRESS_IP4 and \
other.un == self.addr
else:
return other.af == \
VppEnum.vl_api_address_family_t.ADDRESS_IP6 and \
other.un == self.addr
else:
_log.error(
"Comparing VppIpAddress:<%s> %s with incomparable "
"type: <%s> %s",
self.__class__.__name__, self,
other.__class__.__name__, other)
return NotImplemented
def __ne__(self, other):
return not (self == other)
def __str__(self):
return self.address
@property
def bytes(self):
return self.addr.bytes
@property
def address(self):
return self.addr.address
@property
def length(self):
return self.addr.length
@property
def version(self):
return self.addr.version
@property
def is_ip6(self):
return (self.version == 6)
@property
def af(self):
if self.version == 6:
return AF_INET6
else:
return AF_INET
@property
def dpo_proto(self):
if self.version == 6:
return DpoProto.DPO_PROTO_IP6
else:
return DpoProto.DPO_PROTO_IP4
class VppIpPrefix():
def __init__(self, addr, len):
self.addr = VppIpAddress(addr)
self.len = len
def encode(self):
return {'address': self.addr.encode(),
'address_length': self.len}
@property
def address(self):
return self.addr.address
@property
def bytes(self):
return self.addr.bytes
@property
def length(self):
return self.len
@property
def is_ip6(self):
return self.addr.is_ip6
def __str__(self):
return "%s/%d" % (self.address, self.length)
def __eq__(self, other):
if isinstance(other, self.__class__):
return (self.len == other.len and self.addr == other.addr)
elif hasattr(other, "address") and hasattr(other, "address_length"):
# vl_api_prefix_t
return self.len == other.address_length and \
self.addr == other.address
else:
_log.error(
"Comparing VppIpPrefix:%s with incomparable type: %s" %
(self, other))
return NotImplemented
class VppIpMPrefix():
def __init__(self, saddr, gaddr, len):
self.saddr = saddr
self.gaddr = gaddr
self.len = len
self.ip_saddr = ip_address(text_type(self.saddr))
self.ip_gaddr = ip_address(text_type(self.gaddr))
if self.ip_saddr.version != self.ip_gaddr.version:
raise ValueError('Source and group addresses must be of the '
'same address family.')
def encode(self):
if 6 == self.ip_saddr.version:
prefix = {
'af': VppEnum.vl_api_address_family_t.ADDRESS_IP6,
'grp_address': {'ip6': self.ip_gaddr.packed},
'src_address': {'ip6': self.ip_saddr.packed},
'grp_address_length': self.len,
}
else:
prefix = {
'af': VppEnum.vl_api_address_family_t.ADDRESS_IP4,
'grp_address': {'ip4': self.ip_gaddr.packed},
'src_address': {'ip4': self.ip_saddr.packed},
'grp_address_length': self.len,
}
return prefix
|
