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update pyroute2 handling (pr2modules is gone)

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This commit is contained in:
Stefan Bühler 2023-01-12 12:17:49 +01:00
parent 65116375b3
commit f9c9b98868
4 changed files with 42 additions and 41 deletions
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2
setup.cfg
View File

@ -26,7 +26,7 @@ install_requires =
hypercorn[trio]
PyYAML
protobuf>=4.21
pyroute2
pyroute2~=0.7.3
[options.packages.find]
where = src

20
src/capport/utils/ipneigh.py
View File

@ -6,10 +6,10 @@ import ipaddress
import socket
import typing
import pr2modules.iproute.linux
import pr2modules.netlink.exceptions
import pr2modules.netlink.rtnl
import pr2modules.netlink.rtnl.ndmsg
import pyroute2.iproute.linux
import pyroute2.netlink.exceptions
import pyroute2.netlink.rtnl
import pyroute2.netlink.rtnl.ndmsg
from capport import cptypes
@ -21,7 +21,7 @@ async def connect():
# TODO: run blocking iproute calls in a different thread?
class NeighborController:
def __init__(self):
self.ip = pr2modules.iproute.linux.IPRoute()
self.ip = pyroute2.iproute.linux.IPRoute()
async def get_neighbor(
self,
@ -29,7 +29,7 @@ class NeighborController:
*,
index: int=0, # interface index
flags: int=0,
) -> typing.Optional[pr2modules.iproute.linux.ndmsg.ndmsg]:
) -> typing.Optional[pyroute2.iproute.linux.ndmsg.ndmsg]:
if not index:
route = await self.get_route(address)
if route is None:
@ -37,7 +37,7 @@ class NeighborController:
index = route.get_attr(route.name2nla('oif'))
try:
return self.ip.neigh('get', dst=str(address), ifindex=index, state='none')[0]
except pr2modules.netlink.exceptions.NetlinkError as e:
except pyroute2.netlink.exceptions.NetlinkError as e:
if e.code == errno.ENOENT:
return None
raise
@ -58,17 +58,17 @@ class NeighborController:
async def get_route(
self,
address: cptypes.IPAddress,
) -> typing.Optional[pr2modules.iproute.linux.rtmsg]:
) -> typing.Optional[pyroute2.iproute.linux.rtmsg]:
try:
return self.ip.route('get', dst=str(address))[0]
except pr2modules.netlink.exceptions.NetlinkError as e:
except pyroute2.netlink.exceptions.NetlinkError as e:
if e.code == errno.ENOENT:
return None
raise
async def dump_neighbors(self, interface: str) -> typing.AsyncGenerator[typing.Tuple[cptypes.MacAddress, cptypes.IPAddress], None]:
ifindex = socket.if_nametoindex(interface)
unicast_num = pr2modules.netlink.rtnl.rt_type['unicast']
unicast_num = pyroute2.netlink.rtnl.rt_type['unicast']
# ip.neigh doesn't support AF_UNSPEC (as it is 0 and evaluates to `False` and gets forced to AF_INET)
for family in (socket.AF_INET, socket.AF_INET6):
for neigh in self.ip.neigh('dump', ifindex=ifindex, family=family):

14
src/capport/utils/nft_set.py
View File

@ -2,9 +2,9 @@ from __future__ import annotations
import typing
import pr2modules.netlink
import pyroute2.netlink
from capport import cptypes
from pr2modules.netlink.nfnetlink import nftsocket as _nftsocket
from pyroute2.netlink.nfnetlink import nftsocket as _nftsocket
from .nft_socket import NFTSocket
@ -48,7 +48,7 @@ class NftSet:
# make sure entries exists
tx.put(
_nftsocket.NFT_MSG_NEWSETELEM,
pr2modules.netlink.NLM_F_CREATE,
pyroute2.netlink.NLM_F_CREATE,
nfgen_family=NFPROTO_INET,
attrs=dict(
NFTA_SET_TABLE='captive_mark',
@ -69,7 +69,7 @@ class NftSet:
# now create entries with new timeout value
tx.put(
_nftsocket.NFT_MSG_NEWSETELEM,
pr2modules.netlink.NLM_F_CREATE|pr2modules.netlink.NLM_F_EXCL,
pyroute2.netlink.NLM_F_CREATE|pyroute2.netlink.NLM_F_EXCL,
nfgen_family=NFPROTO_INET,
attrs=dict(
NFTA_SET_TABLE='captive_mark',
@ -96,7 +96,7 @@ class NftSet:
# make sure entries exists
tx.put(
_nftsocket.NFT_MSG_NEWSETELEM,
pr2modules.netlink.NLM_F_CREATE,
pyroute2.netlink.NLM_F_CREATE,
nfgen_family=NFPROTO_INET,
attrs=dict(
NFTA_SET_TABLE='captive_mark',
@ -160,7 +160,7 @@ class NftSet:
with self._socket.begin() as tx:
tx.put(
_nftsocket.NFT_MSG_NEWTABLE,
pr2modules.netlink.NLM_F_CREATE,
pyroute2.netlink.NLM_F_CREATE,
nfgen_family=NFPROTO_INET,
attrs=dict(
NFTA_TABLE_NAME='captive_mark',
@ -168,7 +168,7 @@ class NftSet:
)
tx.put(
_nftsocket.NFT_MSG_NEWSET,
pr2modules.netlink.NLM_F_CREATE,
pyroute2.netlink.NLM_F_CREATE,
nfgen_family=NFPROTO_INET,
attrs=dict(
NFTA_SET_TABLE='captive_mark',

47
src/capport/utils/nft_socket.py
View File

@ -4,34 +4,35 @@ import contextlib
import typing
import threading
from pr2modules.netlink.nfnetlink import nftsocket as _nftsocket
import pr2modules.netlink
import pr2modules.netlink.nlsocket
from pr2modules.netlink.nfnetlink import nfgen_msg
from pr2modules.netlink.nfnetlink import NFNL_SUBSYS_NFTABLES
from pyroute2.netlink.nfnetlink import nftsocket as _nftsocket
import pyroute2.netlink
import pyroute2.netlink.nlsocket
from pyroute2.netlink.nfnetlink import nfgen_msg
from pyroute2.netlink.nfnetlink import NFNL_SUBSYS_NFTABLES
NFPROTO_INET: int = 1 # nfgen_family "ipv4+ipv6"; strace decodes this as "AF_UNSPEC"
_NlMsgBase = typing.TypeVar('_NlMsgBase', bound=pr2modules.netlink.nlmsg_base)
_NlMsgBase = typing.TypeVar('_NlMsgBase', bound=pyroute2.netlink.nlmsg_base)
# nft uses NESTED for those.. lets do the same
_nftsocket.nft_set_elem_list_msg.set_elem.data_attributes.nla_flags = pr2modules.netlink.NLA_F_NESTED
_nftsocket.nft_set_elem_list_msg.set_elem.nla_flags = pr2modules.netlink.NLA_F_NESTED
_nftsocket.nft_set_elem_list_msg.set_elem.data_attributes.nla_flags = pyroute2.netlink.NLA_F_NESTED
_nftsocket.nft_set_elem_list_msg.set_elem.nla_flags = pyroute2.netlink.NLA_F_NESTED
# nftable lists always use `1` as list element attr type
_nftsocket.nft_set_elem_list_msg.set_elem.header_type = 1 # NFTA_LIST_ELEM
def _monkey_patch_pyroute2():
import pr2modules.netlink
import pyroute2.netlink
# overwrite setdefault on nlmsg_base class hierarchy
_orig_setvalue = pr2modules.netlink.nlmsg_base.setvalue
_orig_setvalue = pyroute2.netlink.nlmsg_base.setvalue
def _nlmsg_base__setvalue(self, value):
if not self.header or not self['header'] or not isinstance(value, dict):
return _orig_setvalue(self, value)
# merge headers instead of overwriting them
header = value.pop('header', {})
res = _orig_setvalue(self, value)
self['header'].update(header)
@ -43,7 +44,7 @@ def _monkey_patch_pyroute2():
for subcls in cls.__subclasses__():
overwrite_methods(subcls)
overwrite_methods(pr2modules.netlink.nlmsg_base)
overwrite_methods(pyroute2.netlink.nlmsg_base)
_monkey_patch_pyroute2()
@ -61,24 +62,24 @@ def _build(msg_class: typing.Type[_NlMsgBase], /, attrs: typing.Dict={}, header:
key = msg_class.name2nla(key)
prime = r_nla_map[key]
nla_class = prime['class']
if issubclass(nla_class, pr2modules.netlink.nla):
if issubclass(nla_class, pyroute2.netlink.nla):
# support passing nested attributes as dicts of subattributes (or lists of those)
if prime['nla_array']:
value = [
_build(nla_class, attrs=elem) if not isinstance(elem, pr2modules.netlink.nlmsg_base) and isinstance(elem, dict) else elem
_build(nla_class, attrs=elem) if not isinstance(elem, pyroute2.netlink.nlmsg_base) and isinstance(elem, dict) else elem
for elem in value
]
elif not isinstance(value, pr2modules.netlink.nlmsg_base) and isinstance(value, dict):
elif not isinstance(value, pyroute2.netlink.nlmsg_base) and isinstance(value, dict):
value = _build(nla_class, attrs=value)
attr_list.append([key, value])
return msg
class NFTSocket(pr2modules.netlink.nlsocket.NetlinkSocket):
class NFTSocket(pyroute2.netlink.nlsocket.NetlinkSocket):
policy: typing.Dict[int, typing.Type[_nftsocket.nft_gen_msg]] = _nftsocket.NFTSocket.policy
def __init__(self) -> None:
super().__init__(family=pr2modules.netlink.NETLINK_NETFILTER)
super().__init__(family=pyroute2.netlink.NETLINK_NETFILTER)
policy = {
(x | (NFNL_SUBSYS_NFTABLES << 8)): y
for (x, y) in self.policy.items()
@ -102,13 +103,13 @@ class NFTSocket(pr2modules.netlink.nlsocket.NetlinkSocket):
tx.put(msg_type, msg_flags, attrs=attrs, **fields)
def nft_dump(self, msg_type: int, msg_flags: int=0, /, *, attrs: typing.Dict={}, **fields) -> None:
msg_flags |= pr2modules.netlink.NLM_F_DUMP
msg_flags |= pyroute2.netlink.NLM_F_DUMP
return self.nft_get(msg_type, msg_flags, attrs=attrs, **fields)
def nft_get(self, msg_type: int, msg_flags: int=0, /, *, attrs: typing.Dict={}, **fields) -> None:
msg_class: typing.Type[_nftsocket.nft_gen_msg] = self.policy[msg_type]
msg_type = (NFNL_SUBSYS_NFTABLES << 8) | msg_type
msg_flags |= pr2modules.netlink.NLM_F_REQUEST
msg_flags |= pyroute2.netlink.NLM_F_REQUEST
msg = _build(msg_class, attrs=attrs, **fields)
return self.nlm_request(msg, msg_type, msg_flags)
@ -132,7 +133,7 @@ class NFTTransaction:
res_id=NFNL_SUBSYS_NFTABLES,
header=dict(
type=0x10, # NFNL_MSG_BATCH_BEGIN
flags=pr2modules.netlink.NLM_F_REQUEST,
flags=pyroute2.netlink.NLM_F_REQUEST,
sequence_number=self._seqnum,
),
)
@ -165,7 +166,7 @@ class NFTTransaction:
return
self._closed = True
# request ACK only on the last message (before END)
self._final_msg['header']['flags'] |= pr2modules.netlink.NLM_F_ACK
self._final_msg['header']['flags'] |= pyroute2.netlink.NLM_F_ACK
self._final_msg.encode()
self._data += self._final_msg.data
self._final_msg = None
@ -175,7 +176,7 @@ class NFTTransaction:
res_id=NFNL_SUBSYS_NFTABLES,
header=dict(
type=0x11, # NFNL_MSG_BATCH_END
flags=pr2modules.netlink.NLM_F_REQUEST,
flags=pyroute2.netlink.NLM_F_REQUEST,
sequence_number=self._seqnum,
),
)
@ -208,8 +209,8 @@ class NFTTransaction:
def put(self, msg_type: int, msg_flags: int=0, /, *, attrs: typing.Dict={}, **fields) -> None:
msg_class: typing.Type[_nftsocket.nft_gen_msg] = self._socket.policy[msg_type]
msg_flags |= pr2modules.netlink.NLM_F_REQUEST # always set REQUEST
msg_flags &= ~pr2modules.netlink.NLM_F_ACK # make sure ACK is not set!
msg_flags |= pyroute2.netlink.NLM_F_REQUEST # always set REQUEST
msg_flags &= ~pyroute2.netlink.NLM_F_ACK # make sure ACK is not set!
header = dict(
type=(NFNL_SUBSYS_NFTABLES << 8) | msg_type,
flags=msg_flags,