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import socket
from pyroute2.common import map_namespace
from pyroute2.netlink import nla, nlmsg
# address attributes
#
# Important comment:
# For IPv4, IFA_ADDRESS is a prefix address, not a local interface
# address. It makes no difference for normal interfaces, but
# for point-to-point ones IFA_ADDRESS means DESTINATION address,
# and the local address is supplied in IFA_LOCAL attribute.
#
IFA_F_SECONDARY = 0x01
# IFA_F_TEMPORARY IFA_F_SECONDARY
IFA_F_NODAD = 0x02
IFA_F_OPTIMISTIC = 0x04
IFA_F_DADFAILED = 0x08
IFA_F_HOMEADDRESS = 0x10
IFA_F_DEPRECATED = 0x20
IFA_F_TENTATIVE = 0x40
IFA_F_PERMANENT = 0x80
IFA_F_MANAGETEMPADDR = 0x100
IFA_F_NOPREFIXROUTE = 0x200
IFA_F_MCAUTOJOIN = 0x400
IFA_F_STABLE_PRIVACY = 0x800
(IFA_F_NAMES, IFA_F_VALUES) = map_namespace('IFA_F', globals())
# 8<----------------------------------------------
IFA_F_TEMPORARY = IFA_F_SECONDARY
IFA_F_NAMES['IFA_F_TEMPORARY'] = IFA_F_TEMPORARY
IFA_F_VALUES6 = IFA_F_VALUES
IFA_F_VALUES6[IFA_F_TEMPORARY] = 'IFA_F_TEMPORARY'
# 8<----------------------------------------------
class ifaddrmsg(nlmsg):
'''
IP address information
C structure::
struct ifaddrmsg {
unsigned char ifa_family; /* Address type */
unsigned char ifa_prefixlen; /* Prefixlength of address */
unsigned char ifa_flags; /* Address flags */
unsigned char ifa_scope; /* Address scope */
int ifa_index; /* Interface index */
};
'''
prefix = 'IFA_'
sql_constraints = {'IFA_LOCAL': "NOT NULL DEFAULT ''"}
fields = (
('family', 'B'),
('prefixlen', 'B'),
('flags', 'B'),
('scope', 'B'),
('index', 'I'),
)
nla_map = (
('IFA_UNSPEC', 'hex'),
('IFA_ADDRESS', 'ipaddr'),
('IFA_LOCAL', 'ipaddr'),
('IFA_LABEL', 'asciiz'),
('IFA_BROADCAST', 'ipaddr'),
('IFA_ANYCAST', 'ipaddr'),
('IFA_CACHEINFO', 'cacheinfo'),
('IFA_MULTICAST', 'ipaddr'),
('IFA_FLAGS', 'uint32'),
)
class cacheinfo(nla):
fields = (
('ifa_preferred', 'I'),
('ifa_valid', 'I'),
('cstamp', 'I'),
('tstamp', 'I'),
)
@staticmethod
def flags2names(flags, family=socket.AF_INET):
if family == socket.AF_INET6:
ifa_f_values = IFA_F_VALUES6
else:
ifa_f_values = IFA_F_VALUES
ret = []
for f in ifa_f_values:
if f & flags:
ret.append(ifa_f_values[f])
return ret
@staticmethod
def names2flags(flags):
ret = 0
for f in flags:
if f[0] == '!':
f = f[1:]
else:
ret |= IFA_F_NAMES[f]
return ret