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# By Peter V. Saveliev https://pypi.python.org/pypi/pyroute2. Dual licensed under the Apache 2 and GPLv2+ see https://github.com/svinota/pyroute2 for License details.
from socket import AF_INET6
from pyroute2.common import basestring
from pyroute2.netlink.rtnl.ifinfmsg import ifinfmsg
from pyroute2.netlink.rtnl.rtmsg import rtmsg
class IPRequest(dict):
def __init__(self, obj=None):
dict.__init__(self)
if obj is not None:
self.update(obj)
def update(self, obj):
for key in obj:
if obj[key] is not None:
self[key] = obj[key]
class IPRouteRequest(IPRequest):
'''
Utility class, that converts human-readable dictionary
into RTNL route request.
'''
def __setitem__(self, key, value):
# fix family
if isinstance(value, basestring) and value.find(':') >= 0:
self['family'] = AF_INET6
# work on the rest
if key == 'dst':
if value != 'default':
value = value.split('/')
if len(value) == 1:
dst = value[0]
mask = 0
elif len(value) == 2:
dst = value[0]
mask = int(value[1])
else:
raise ValueError('wrong destination')
dict.__setitem__(self, 'dst', dst)
dict.__setitem__(self, 'dst_len', mask)
elif key == 'metrics':
ret = {'attrs': []}
for name in value:
rtax = rtmsg.metrics.name2nla(name)
ret['attrs'].append([rtax, value[name]])
dict.__setitem__(self, 'metrics', ret)
else:
dict.__setitem__(self, key, value)
class CBRequest(IPRequest):
'''
FIXME
'''
commands = None
msg = None
def __init__(self, *argv, **kwarg):
self['commands'] = {'attrs': []}
def __setitem__(self, key, value):
if value is None:
return
if key in self.commands:
self['commands']['attrs'].\
append([self.msg.name2nla(key), value])
else:
dict.__setitem__(self, key, value)
class IPLinkRequest(IPRequest):
'''
Utility class, that converts human-readable dictionary
into RTNL link request.
'''
blacklist = ['carrier',
'carrier_changes']
def __init__(self, *argv, **kwarg):
self.deferred = []
IPRequest.__init__(self, *argv, **kwarg)
if 'index' not in self:
self['index'] = 0
def __setitem__(self, key, value):
# ignore blacklisted attributes
if key in self.blacklist:
return
# there must be no "None" values in the request
if value is None:
return
# all the values must be in ascii
try:
if isinstance(value, unicode):
value = value.encode('ascii')
except NameError:
pass
# set up specific keys
if key == 'kind':
self['IFLA_LINKINFO'] = {'attrs': []}
linkinfo = self['IFLA_LINKINFO']['attrs']
linkinfo.append(['IFLA_INFO_KIND', value])
if value in ('vlan', 'bond', 'tuntap', 'veth',
'vxlan', 'macvlan', 'macvtap', 'gre'):
linkinfo.append(['IFLA_INFO_DATA', {'attrs': []}])
elif key == 'vlan_id':
nla = ['IFLA_VLAN_ID', value]
# FIXME: we need to replace, not add
self.defer_nla(nla, ('IFLA_LINKINFO', 'IFLA_INFO_DATA'),
lambda x: x.get('kind', None) == 'vlan')
elif key == 'gid':
nla = ['IFTUN_UID', value]
self.defer_nla(nla, ('IFLA_LINKINFO', 'IFLA_INFO_DATA'),
lambda x: x.get('kind', None) == 'tuntap')
elif key == 'uid':
nla = ['IFTUN_UID', value]
self.defer_nla(nla, ('IFLA_LINKINFO', 'IFLA_INFO_DATA'),
lambda x: x.get('kind', None) == 'tuntap')
elif key == 'mode':
nla = ['IFTUN_MODE', value]
self.defer_nla(nla, ('IFLA_LINKINFO', 'IFLA_INFO_DATA'),
lambda x: x.get('kind', None) == 'tuntap')
nla = ['IFLA_BOND_MODE', value]
self.defer_nla(nla, ('IFLA_LINKINFO', 'IFLA_INFO_DATA'),
lambda x: x.get('kind', None) == 'bond')
elif key == 'ifr':
nla = ['IFTUN_IFR', value]
self.defer_nla(nla, ('IFLA_LINKINFO', 'IFLA_INFO_DATA'),
lambda x: x.get('kind', None) == 'tuntap')
elif key.startswith('macvtap'):
nla = [ifinfmsg.name2nla(key), value]
self.defer_nla(nla, ('IFLA_LINKINFO', 'IFLA_INFO_DATA'),
lambda x: x.get('kind', None) == 'macvtap')
elif key.startswith('macvlan'):
nla = [ifinfmsg.name2nla(key), value]
self.defer_nla(nla, ('IFLA_LINKINFO', 'IFLA_INFO_DATA'),
lambda x: x.get('kind', None) == 'macvlan')
elif key.startswith('gre'):
nla = [ifinfmsg.name2nla(key), value]
self.defer_nla(nla, ('IFLA_LINKINFO', 'IFLA_INFO_DATA'),
lambda x: x.get('kind', None) == 'gre')
elif key.startswith('vxlan'):
nla = [ifinfmsg.name2nla(key), value]
self.defer_nla(nla, ('IFLA_LINKINFO', 'IFLA_INFO_DATA'),
lambda x: x.get('kind', None) == 'vxlan')
elif key == 'peer':
nla = ['VETH_INFO_PEER', {'attrs': [['IFLA_IFNAME', value]]}]
self.defer_nla(nla, ('IFLA_LINKINFO', 'IFLA_INFO_DATA'),
lambda x: x.get('kind', None) == 'veth')
dict.__setitem__(self, key, value)
if self.deferred:
self.flush_deferred()
def flush_deferred(self):
deferred = []
for nla, path, predicate in self.deferred:
if predicate(self):
self.append_nla(nla, path)
else:
deferred.append((nla, path, predicate))
self.deferred = deferred
def append_nla(self, nla, path):
pwd = self
for step in path:
if step in pwd:
pwd = pwd[step]
else:
pwd = [x[1] for x in pwd['attrs']
if x[0] == step][0]['attrs']
pwd.append(nla)
def defer_nla(self, nla, path, predicate):
self.deferred.append((nla, path, predicate))
self.flush_deferred()
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