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-rw-r--r--python/vyos/config_mgmt.py31
-rw-r--r--python/vyos/ifconfig/control.py14
-rw-r--r--python/vyos/ifconfig/interface.py167
-rw-r--r--python/vyos/utils/network.py97
-rw-r--r--python/vyos/utils/process.py2
5 files changed, 167 insertions, 144 deletions
diff --git a/python/vyos/config_mgmt.py b/python/vyos/config_mgmt.py
index 0fc72e660..9caf6da2b 100644
--- a/python/vyos/config_mgmt.py
+++ b/python/vyos/config_mgmt.py
@@ -31,6 +31,7 @@ from vyos.configtree import ConfigTree, ConfigTreeError, show_diff
from vyos.defaults import directories
from vyos.version import get_full_version_data
from vyos.utils.io import ask_yes_no
+from vyos.utils.boot import boot_configuration_complete
from vyos.utils.process import is_systemd_service_active
from vyos.utils.process import rc_cmd
@@ -200,9 +201,9 @@ Proceed ?'''
raise ConfigMgmtError(out)
entry = self._read_tmp_log_entry()
- self._add_log_entry(**entry)
if self._archive_active_config():
+ self._add_log_entry(**entry)
self._update_archive()
msg = 'Reboot timer stopped'
@@ -334,10 +335,10 @@ Proceed ?'''
user = self._get_user()
via = 'init'
comment = ''
- self._add_log_entry(user, via, comment)
# add empty init config before boot-config load for revision
# and diff consistency
if self._archive_active_config():
+ self._add_log_entry(user, via, comment)
self._update_archive()
os.umask(mask)
@@ -352,9 +353,8 @@ Proceed ?'''
self._new_log_entry(tmp_file=tmp_log_entry)
return
- self._add_log_entry()
-
if self._archive_active_config():
+ self._add_log_entry()
self._update_archive()
def commit_archive(self):
@@ -475,22 +475,26 @@ Proceed ?'''
conf_file.chmod(0o644)
def _archive_active_config(self) -> bool:
+ use_tmp = (boot_configuration_complete() or not
+ os.path.isfile(archive_config_file))
mask = os.umask(0o113)
- ext = os.getpid()
- tmp_save = f'/tmp/config.boot.{ext}'
- save_config(tmp_save)
+ if use_tmp:
+ ext = os.getpid()
+ cmp_saved = f'/tmp/config.boot.{ext}'
+ save_config(cmp_saved)
+ else:
+ cmp_saved = config_file
try:
- if cmp(tmp_save, archive_config_file, shallow=False):
- # this will be the case on boot, as well as certain
- # re-initialiation instances after delete/set
- os.unlink(tmp_save)
+ if cmp(cmp_saved, archive_config_file, shallow=False):
+ if use_tmp: os.unlink(cmp_saved)
+ os.umask(mask)
return False
except FileNotFoundError:
pass
- rc, out = rc_cmd(f'sudo mv {tmp_save} {archive_config_file}')
+ rc, out = rc_cmd(f'sudo mv {cmp_saved} {archive_config_file}')
os.umask(mask)
if rc != 0:
@@ -522,9 +526,8 @@ Proceed ?'''
return len(l)
def _check_revision_number(self, rev: int) -> bool:
- # exclude init revision:
maxrev = self._get_number_of_revisions()
- if not 0 <= rev < maxrev - 1:
+ if not 0 <= rev < maxrev:
return False
return True
diff --git a/python/vyos/ifconfig/control.py b/python/vyos/ifconfig/control.py
index c8366cb58..7402da55a 100644
--- a/python/vyos/ifconfig/control.py
+++ b/python/vyos/ifconfig/control.py
@@ -1,4 +1,4 @@
-# Copyright 2019-2021 VyOS maintainers and contributors <maintainers@vyos.io>
+# Copyright 2019-2023 VyOS maintainers and contributors <maintainers@vyos.io>
#
# This library is free software; you can redistribute it and/or
# modify it under the terms of the GNU Lesser General Public
@@ -49,6 +49,18 @@ class Control(Section):
return popen(command, self.debug)
def _cmd(self, command):
+ import re
+ if 'netns' in self.config:
+ # This command must be executed from default netns 'ip link set dev X netns X'
+ # exclude set netns cmd from netns to avoid:
+ # failed to run command: ip netns exec ns01 ip link set dev veth20 netns ns01
+ pattern = r'ip link set dev (\S+) netns (\S+)'
+ matches = re.search(pattern, command)
+ if matches and matches.group(2) == self.config['netns']:
+ # Command already includes netns and matches desired namespace:
+ command = command
+ else:
+ command = f'ip netns exec {self.config["netns"]} {command}'
return cmd(command, self.debug)
def _get_command(self, config, name):
diff --git a/python/vyos/ifconfig/interface.py b/python/vyos/ifconfig/interface.py
index 41ce352ad..050095364 100644
--- a/python/vyos/ifconfig/interface.py
+++ b/python/vyos/ifconfig/interface.py
@@ -38,7 +38,9 @@ from vyos.utils.dict import dict_search
from vyos.utils.file import read_file
from vyos.utils.network import get_interface_config
from vyos.utils.network import get_interface_namespace
+from vyos.utils.network import is_netns_interface
from vyos.utils.process import is_systemd_service_active
+from vyos.utils.process import run
from vyos.template import is_ipv4
from vyos.template import is_ipv6
from vyos.utils.network import is_intf_addr_assigned
@@ -138,9 +140,6 @@ class Interface(Control):
'validate': assert_mtu,
'shellcmd': 'ip link set dev {ifname} mtu {value}',
},
- 'netns': {
- 'shellcmd': 'ip link set dev {ifname} netns {value}',
- },
'vrf': {
'convert': lambda v: f'master {v}' if v else 'nomaster',
'shellcmd': 'ip link set dev {ifname} {value}',
@@ -175,10 +174,6 @@ class Interface(Control):
'validate': assert_boolean,
'location': '/proc/sys/net/ipv4/conf/{ifname}/bc_forwarding',
},
- 'rp_filter': {
- 'validate': lambda flt: assert_range(flt,0,3),
- 'location': '/proc/sys/net/ipv4/conf/{ifname}/rp_filter',
- },
'ipv6_accept_ra': {
'validate': lambda ara: assert_range(ara,0,3),
'location': '/proc/sys/net/ipv6/conf/{ifname}/accept_ra',
@@ -252,9 +247,6 @@ class Interface(Control):
'ipv4_directed_broadcast': {
'location': '/proc/sys/net/ipv4/conf/{ifname}/bc_forwarding',
},
- 'rp_filter': {
- 'location': '/proc/sys/net/ipv4/conf/{ifname}/rp_filter',
- },
'ipv6_accept_ra': {
'location': '/proc/sys/net/ipv6/conf/{ifname}/accept_ra',
},
@@ -286,8 +278,11 @@ class Interface(Control):
}
@classmethod
- def exists(cls, ifname):
- return os.path.exists(f'/sys/class/net/{ifname}')
+ def exists(cls, ifname: str, netns: str=None) -> bool:
+ cmd = f'ip link show dev {ifname}'
+ if netns:
+ cmd = f'ip netns exec {netns} {cmd}'
+ return run(cmd) == 0
@classmethod
def get_config(cls):
@@ -355,7 +350,13 @@ class Interface(Control):
self.vrrp = VRRP(ifname)
def _create(self):
+ # Do not create interface that already exist or exists in netns
+ netns = self.config.get('netns', None)
+ if self.exists(f'{self.ifname}', netns=netns):
+ return
+
cmd = 'ip link add dev {ifname} type {type}'.format(**self.config)
+ if 'netns' in self.config: cmd = f'ip netns exec {netns} {cmd}'
self._cmd(cmd)
def remove(self):
@@ -390,6 +391,9 @@ class Interface(Control):
# after interface removal no other commands should be allowed
# to be called and instead should raise an Exception:
cmd = 'ip link del dev {ifname}'.format(**self.config)
+ # for delete we can't get data from self.config{'netns'}
+ netns = get_interface_namespace(self.ifname)
+ if netns: cmd = f'ip netns exec {netns} {cmd}'
return self._cmd(cmd)
def _set_vrf_ct_zone(self, vrf):
@@ -397,6 +401,10 @@ class Interface(Control):
Add/Remove rules in nftables to associate traffic in VRF to an
individual conntack zone
"""
+ # Don't allow for netns yet
+ if 'netns' in self.config:
+ return None
+
if vrf:
# Get routing table ID for VRF
vrf_table_id = get_interface_config(vrf).get('linkinfo', {}).get(
@@ -540,36 +548,30 @@ class Interface(Control):
if prev_state == 'up':
self.set_admin_state('up')
- def del_netns(self, netns):
- """
- Remove interface from given NETNS.
- """
-
- # If NETNS does not exist then there is nothing to delete
+ def del_netns(self, netns: str) -> bool:
+ """ Remove interface from given network namespace """
+ # If network namespace does not exist then there is nothing to delete
if not os.path.exists(f'/run/netns/{netns}'):
- return None
-
- # As a PoC we only allow 'dummy' interfaces
- if 'dum' not in self.ifname:
- return None
+ return False
- # Check if interface realy exists in namespace
- if get_interface_namespace(self.ifname) != None:
- self._cmd(f'ip netns exec {get_interface_namespace(self.ifname)} ip link del dev {self.ifname}')
- return
+ # Check if interface exists in network namespace
+ if is_netns_interface(self.ifname, netns):
+ self._cmd(f'ip netns exec {netns} ip link del dev {self.ifname}')
+ return True
+ return False
- def set_netns(self, netns):
+ def set_netns(self, netns: str) -> bool:
"""
- Add interface from given NETNS.
+ Add interface from given network namespace
Example:
>>> from vyos.ifconfig import Interface
>>> Interface('dum0').set_netns('foo')
"""
+ self._cmd(f'ip link set dev {self.ifname} netns {netns}')
+ return True
- self.set_interface('netns', netns)
-
- def set_vrf(self, vrf):
+ def set_vrf(self, vrf: str) -> bool:
"""
Add/Remove interface from given VRF instance.
@@ -581,10 +583,11 @@ class Interface(Control):
tmp = self.get_interface('vrf')
if tmp == vrf:
- return None
+ return False
self.set_interface('vrf', vrf)
self._set_vrf_ct_zone(vrf)
+ return True
def set_arp_cache_tmo(self, tmo):
"""
@@ -621,6 +624,10 @@ class Interface(Control):
>>> from vyos.ifconfig import Interface
>>> Interface('eth0').set_tcp_ipv4_mss(1340)
"""
+ # Don't allow for netns yet
+ if 'netns' in self.config:
+ return None
+
self._cleanup_mss_rules('raw', self.ifname)
nft_prefix = 'nft add rule raw VYOS_TCP_MSS'
base_cmd = f'oifname "{self.ifname}" tcp flags & (syn|rst) == syn'
@@ -641,6 +648,10 @@ class Interface(Control):
>>> from vyos.ifconfig import Interface
>>> Interface('eth0').set_tcp_mss(1320)
"""
+ # Don't allow for netns yet
+ if 'netns' in self.config:
+ return None
+
self._cleanup_mss_rules('ip6 raw', self.ifname)
nft_prefix = 'nft add rule ip6 raw VYOS_TCP_MSS'
base_cmd = f'oifname "{self.ifname}" tcp flags & (syn|rst) == syn'
@@ -745,40 +756,36 @@ class Interface(Control):
return None
return self.set_interface('ipv4_directed_broadcast', forwarding)
- def set_ipv4_source_validation(self, value):
- """
- Help prevent attacks used by Spoofing IP Addresses. Reverse path
- filtering is a Kernel feature that, when enabled, is designed to ensure
- packets that are not routable to be dropped. The easiest example of this
- would be and IP Address of the range 10.0.0.0/8, a private IP Address,
- being received on the Internet facing interface of the router.
+ def _cleanup_ipv4_source_validation_rules(self, ifname):
+ results = self._cmd(f'nft -a list chain ip raw vyos_rpfilter').split("\n")
+ for line in results:
+ if f'iifname "{ifname}"' in line:
+ handle_search = re.search('handle (\d+)', line)
+ if handle_search:
+ self._cmd(f'nft delete rule ip raw vyos_rpfilter handle {handle_search[1]}')
- As per RFC3074.
+ def set_ipv4_source_validation(self, mode):
"""
- if value == 'strict':
- value = 1
- elif value == 'loose':
- value = 2
- else:
- value = 0
-
- all_rp_filter = int(read_file('/proc/sys/net/ipv4/conf/all/rp_filter'))
- if all_rp_filter > value:
- global_setting = 'disable'
- if all_rp_filter == 1: global_setting = 'strict'
- elif all_rp_filter == 2: global_setting = 'loose'
-
- from vyos.base import Warning
- Warning(f'Global source-validation is set to "{global_setting}", this '\
- f'overrides per interface setting on "{self.ifname}"!')
+ Set IPv4 reverse path validation
- tmp = self.get_interface('rp_filter')
- if int(tmp) == value:
+ Example:
+ >>> from vyos.ifconfig import Interface
+ >>> Interface('eth0').set_ipv4_source_validation('strict')
+ """
+ # Don't allow for netns yet
+ if 'netns' in self.config:
return None
- return self.set_interface('rp_filter', value)
+
+ self._cleanup_ipv4_source_validation_rules(self.ifname)
+ nft_prefix = f'nft insert rule ip raw vyos_rpfilter iifname "{self.ifname}"'
+ if mode in ['strict', 'loose']:
+ self._cmd(f"{nft_prefix} counter return")
+ if mode == 'strict':
+ self._cmd(f"{nft_prefix} fib saddr . iif oif 0 counter drop")
+ elif mode == 'loose':
+ self._cmd(f"{nft_prefix} fib saddr oif 0 counter drop")
def _cleanup_ipv6_source_validation_rules(self, ifname):
- commands = []
results = self._cmd(f'nft -a list chain ip6 raw vyos_rpfilter').split("\n")
for line in results:
if f'iifname "{ifname}"' in line:
@@ -794,8 +801,14 @@ class Interface(Control):
>>> from vyos.ifconfig import Interface
>>> Interface('eth0').set_ipv6_source_validation('strict')
"""
+ # Don't allow for netns yet
+ if 'netns' in self.config:
+ return None
+
self._cleanup_ipv6_source_validation_rules(self.ifname)
- nft_prefix = f'nft add rule ip6 raw vyos_rpfilter iifname "{self.ifname}"'
+ nft_prefix = f'nft insert rule ip6 raw vyos_rpfilter iifname "{self.ifname}"'
+ if mode in ['strict', 'loose']:
+ self._cmd(f"{nft_prefix} counter return")
if mode == 'strict':
self._cmd(f"{nft_prefix} fib saddr . iif oif 0 counter drop")
elif mode == 'loose':
@@ -1143,13 +1156,17 @@ class Interface(Control):
if addr in self._addr:
return False
+ # get interface network namespace if specified
+ netns = self.config.get('netns', None)
+
# add to interface
if addr == 'dhcp':
self.set_dhcp(True)
elif addr == 'dhcpv6':
self.set_dhcpv6(True)
- elif not is_intf_addr_assigned(self.ifname, addr):
- tmp = f'ip addr add {addr} dev {self.ifname}'
+ elif not is_intf_addr_assigned(self.ifname, addr, netns=netns):
+ netns_cmd = f'ip netns exec {netns}' if netns else ''
+ tmp = f'{netns_cmd} ip addr add {addr} dev {self.ifname}'
# Add broadcast address for IPv4
if is_ipv4(addr): tmp += ' brd +'
@@ -1189,13 +1206,17 @@ class Interface(Control):
if not addr:
raise ValueError()
+ # get interface network namespace if specified
+ netns = self.config.get('netns', None)
+
# remove from interface
if addr == 'dhcp':
self.set_dhcp(False)
elif addr == 'dhcpv6':
self.set_dhcpv6(False)
- elif is_intf_addr_assigned(self.ifname, addr):
- self._cmd(f'ip addr del "{addr}" dev "{self.ifname}"')
+ elif is_intf_addr_assigned(self.ifname, addr, netns=netns):
+ netns_cmd = f'ip netns exec {netns}' if netns else ''
+ self._cmd(f'{netns_cmd} ip addr del {addr} dev {self.ifname}')
else:
return False
@@ -1215,8 +1236,11 @@ class Interface(Control):
self.set_dhcp(False)
self.set_dhcpv6(False)
+ netns = get_interface_namespace(self.ifname)
+ netns_cmd = f'ip netns exec {netns}' if netns else ''
+ cmd = f'{netns_cmd} ip addr flush dev {self.ifname}'
# flush all addresses
- self._cmd(f'ip addr flush dev "{self.ifname}"')
+ self._cmd(cmd)
def add_to_bridge(self, bridge_dict):
"""
@@ -1371,6 +1395,11 @@ class Interface(Control):
# - https://man7.org/linux/man-pages/man8/tc-mirred.8.html
# Depening if we are the source or the target interface of the port
# mirror we need to setup some variables.
+
+ # Don't allow for netns yet
+ if 'netns' in self.config:
+ return None
+
source_if = self.config['ifname']
mirror_config = None
@@ -1471,8 +1500,8 @@ class Interface(Control):
# Since the interface is pushed onto a separate logical stack
# Configure NETNS
if dict_search('netns', config) != None:
- self.set_netns(config.get('netns', ''))
- return
+ if not is_netns_interface(self.ifname, self.config['netns']):
+ self.set_netns(config.get('netns', ''))
else:
self.del_netns(config.get('netns', ''))
diff --git a/python/vyos/utils/network.py b/python/vyos/utils/network.py
index bc6899e45..55ff29f0c 100644
--- a/python/vyos/utils/network.py
+++ b/python/vyos/utils/network.py
@@ -40,13 +40,19 @@ def interface_exists(interface) -> bool:
import os
return os.path.exists(f'/sys/class/net/{interface}')
-def interface_exists_in_netns(interface_name, netns):
+def is_netns_interface(interface, netns):
from vyos.utils.process import rc_cmd
- rc, out = rc_cmd(f'ip netns exec {netns} ip link show dev {interface_name}')
+ rc, out = rc_cmd(f'sudo ip netns exec {netns} ip link show dev {interface}')
if rc == 0:
return True
return False
+def get_netns_all() -> list:
+ from json import loads
+ from vyos.utils.process import cmd
+ tmp = loads(cmd('ip --json netns ls'))
+ return [ netns['name'] for netns in tmp ]
+
def get_vrf_members(vrf: str) -> list:
"""
Get list of interface VRF members
@@ -78,8 +84,7 @@ def get_interface_config(interface):
""" Returns the used encapsulation protocol for given interface.
If interface does not exist, None is returned.
"""
- import os
- if not os.path.exists(f'/sys/class/net/{interface}'):
+ if not interface_exists(interface):
return None
from json import loads
from vyos.utils.process import cmd
@@ -90,31 +95,30 @@ def get_interface_address(interface):
""" Returns the used encapsulation protocol for given interface.
If interface does not exist, None is returned.
"""
- import os
- if not os.path.exists(f'/sys/class/net/{interface}'):
+ if not interface_exists(interface):
return None
from json import loads
from vyos.utils.process import cmd
tmp = loads(cmd(f'ip --detail --json addr show dev {interface}'))[0]
return tmp
-def get_interface_namespace(iface):
+def get_interface_namespace(interface: str):
"""
Returns wich netns the interface belongs to
"""
from json import loads
from vyos.utils.process import cmd
- # Check if netns exist
- tmp = loads(cmd(f'ip --json netns ls'))
- if len(tmp) == 0:
- return None
- for ns in tmp:
+ # Bail out early if netns does not exist
+ tmp = cmd(f'ip --json netns ls')
+ if not tmp: return None
+
+ for ns in loads(tmp):
netns = f'{ns["name"]}'
# Search interface in each netns
data = loads(cmd(f'ip netns exec {netns} ip --json link show'))
for tmp in data:
- if iface == tmp["ifname"]:
+ if interface == tmp["ifname"]:
return netns
def is_ipv6_tentative(iface: str, ipv6_address: str) -> bool:
@@ -172,8 +176,7 @@ def is_wwan_connected(interface):
def get_bridge_fdb(interface):
""" Returns the forwarding database entries for a given interface """
- import os
- if not os.path.exists(f'/sys/class/net/{interface}'):
+ if not interface_exists(interface):
return None
from json import loads
from vyos.utils.process import cmd
@@ -305,57 +308,33 @@ def is_addr_assigned(ip_address, vrf=None) -> bool:
return False
-def is_intf_addr_assigned(intf, address) -> bool:
+def is_intf_addr_assigned(ifname: str, addr: str, netns: str=None) -> bool:
"""
Verify if the given IPv4/IPv6 address is assigned to specific interface.
It can check both a single IP address (e.g. 192.0.2.1 or a assigned CIDR
address 192.0.2.1/24.
"""
- from vyos.template import is_ipv4
-
- from netifaces import ifaddresses
- from netifaces import AF_INET
- from netifaces import AF_INET6
-
- # check if the requested address type is configured at all
- # {
- # 17: [{'addr': '08:00:27:d9:5b:04', 'broadcast': 'ff:ff:ff:ff:ff:ff'}],
- # 2: [{'addr': '10.0.2.15', 'netmask': '255.255.255.0', 'broadcast': '10.0.2.255'}],
- # 10: [{'addr': 'fe80::a00:27ff:fed9:5b04%eth0', 'netmask': 'ffff:ffff:ffff:ffff::'}]
- # }
- try:
- addresses = ifaddresses(intf)
- except ValueError as e:
- print(e)
- return False
-
- # determine IP version (AF_INET or AF_INET6) depending on passed address
- addr_type = AF_INET if is_ipv4(address) else AF_INET6
-
- # Check every IP address on this interface for a match
- netmask = None
- if '/' in address:
- address, netmask = address.split('/')
- for ip in addresses.get(addr_type, []):
- # ip can have the interface name in the 'addr' field, we need to remove it
- # {'addr': 'fe80::a00:27ff:fec5:f821%eth2', 'netmask': 'ffff:ffff:ffff:ffff::'}
- ip_addr = ip['addr'].split('%')[0]
-
- if not _are_same_ip(address, ip_addr):
- continue
-
- # we do not have a netmask to compare against, they are the same
- if not netmask:
- return True
+ import json
+ import jmespath
- prefixlen = ''
- if is_ipv4(ip_addr):
- prefixlen = sum([bin(int(_)).count('1') for _ in ip['netmask'].split('.')])
- else:
- prefixlen = sum([bin(int(_,16)).count('1') for _ in ip['netmask'].split('/')[0].split(':') if _])
+ from vyos.utils.process import rc_cmd
+ from ipaddress import ip_interface
- if str(prefixlen) == netmask:
- return True
+ netns_cmd = f'ip netns exec {netns}' if netns else ''
+ rc, out = rc_cmd(f'{netns_cmd} ip --json address show dev {ifname}')
+ if rc == 0:
+ json_out = json.loads(out)
+ addresses = jmespath.search("[].addr_info[].{family: family, address: local, prefixlen: prefixlen}", json_out)
+ for address_info in addresses:
+ family = address_info['family']
+ address = address_info['address']
+ prefixlen = address_info['prefixlen']
+ # Remove the interface name if present in the given address
+ if '%' in addr:
+ addr = addr.split('%')[0]
+ interface = ip_interface(f"{address}/{prefixlen}")
+ if ip_interface(addr) == interface or address == addr:
+ return True
return False
diff --git a/python/vyos/utils/process.py b/python/vyos/utils/process.py
index e09c7d86d..c2ef98140 100644
--- a/python/vyos/utils/process.py
+++ b/python/vyos/utils/process.py
@@ -170,7 +170,7 @@ def rc_cmd(command, flag='', shell=None, input=None, timeout=None, env=None,
(1, 'Device "eth99" does not exist.')
"""
out, code = popen(
- command, flag,
+ command.lstrip(), flag,
stdout=stdout, stderr=stderr,
input=input, timeout=timeout,
env=env, shell=shell,
generated by cgit v1.2.3 (git 2.39.1) at 2024-11-14 15:35:46 +0000