diff options
Diffstat (limited to 'python')
| -rw-r--r-- | python/vyos/configverify.py | 61 | ||||
| -rw-r--r-- | python/vyos/ifconfig/__init__.py | 2 | ||||
| -rwxr-xr-x | python/vyos/ifconfig/erspan.py | 170 | ||||
| -rw-r--r-- | python/vyos/ifconfig/tunnel.py | 12 | ||||
| -rw-r--r-- | python/vyos/template.py | 5 |
5 files changed, 59 insertions, 191 deletions
diff --git a/python/vyos/configverify.py b/python/vyos/configverify.py index 718b7445d..99c472582 100644 --- a/python/vyos/configverify.py +++ b/python/vyos/configverify.py @@ -337,18 +337,16 @@ def verify_accel_ppp_base_service(config): def verify_diffie_hellman_length(file, min_keysize): """ Verify Diffie-Hellamn keypair length given via file. It must be greater then or equal to min_keysize """ + import os + import re + from vyos.util import cmd try: keysize = str(min_keysize) except: return False - import os - import re - from vyos.util import cmd - if os.path.exists(file): - out = cmd(f'openssl dhparam -inform PEM -in {file} -text') prog = re.compile('\d+\s+bit') if prog.search(out): @@ -358,26 +356,55 @@ def verify_diffie_hellman_length(file, min_keysize): return False -def verify_route_maps(config): +def verify_common_route_maps(config): """ Common helper function used by routing protocol implementations to perform recurring validation if the specified route-map for either zebra to kernel installation exists (this is the top-level route_map key) or when a route is redistributed with a route-map that it exists! """ - if 'route_map' in config: - route_map = config['route_map'] + # XXX: This function is called in combination with a previous call to: + # tmp = conf.get_config_dict(['policy']) - see protocols_ospf.py as example. + # We should NOT call this with the key_mangling option as this would rename + # route-map hypens '-' to underscores '_' and one could no longer distinguish + # what should have been the "proper" route-map name, as foo-bar and foo_bar + # are two entire different route-map instances! + for route_map in ['route-map', 'route_map']: + if route_map not in config: + continue + tmp = config[route_map] # Check if the specified route-map exists, if not error out - if dict_search(f'policy.route_map.{route_map}', config) == None: - raise ConfigError(f'Specified route-map "{route_map}" does not exist!') + if dict_search(f'policy.route-map.{tmp}', config) == None: + raise ConfigError(f'Specified route-map "{tmp}" does not exist!') if 'redistribute' in config: for protocol, protocol_config in config['redistribute'].items(): if 'route_map' in protocol_config: - # A hyphen in a route-map name will be converted to _, take care - # about this effect during validation - route_map = protocol_config['route_map'].replace('-','_') - # Check if the specified route-map exists, if not error out - if dict_search(f'policy.route_map.{route_map}', config) == None: - raise ConfigError(f'Redistribution route-map "{route_map}" ' \ - f'for "{protocol}" does not exist!') + verify_route_map(protocol_config['route_map'], config) + +def verify_route_map(route_map_name, config): + """ + Common helper function used by routing protocol implementations to perform + recurring validation if a specified route-map exists! + """ + # Check if the specified route-map exists, if not error out + if dict_search(f'policy.route-map.{route_map_name}', config) == None: + raise ConfigError(f'Specified route-map "{route_map_name}" does not exist!') + +def verify_prefix_list(prefix_list, config, version=''): + """ + Common helper function used by routing protocol implementations to perform + recurring validation if a specified prefix-list exists! + """ + # Check if the specified prefix-list exists, if not error out + if dict_search(f'policy.prefix-list{version}.{prefix_list}', config) == None: + raise ConfigError(f'Specified prefix-list{version} "{prefix_list}" does not exist!') + +def verify_access_list(access_list, config, version=''): + """ + Common helper function used by routing protocol implementations to perform + recurring validation if a specified prefix-list exists! + """ + # Check if the specified ACL exists, if not error out + if dict_search(f'policy.access-list{version}.{access_list}', config) == None: + raise ConfigError(f'Specified access-list{version} "{access_list}" does not exist!') diff --git a/python/vyos/ifconfig/__init__.py b/python/vyos/ifconfig/__init__.py index f5dfa8e05..e9da1e9f5 100644 --- a/python/vyos/ifconfig/__init__.py +++ b/python/vyos/ifconfig/__init__.py @@ -32,8 +32,6 @@ from vyos.ifconfig.vtun import VTunIf from vyos.ifconfig.vti import VTIIf from vyos.ifconfig.pppoe import PPPoEIf from vyos.ifconfig.tunnel import TunnelIf -from vyos.ifconfig.erspan import ERSpanIf -from vyos.ifconfig.erspan import ER6SpanIf from vyos.ifconfig.wireless import WiFiIf from vyos.ifconfig.l2tpv3 import L2TPv3If from vyos.ifconfig.macsec import MACsecIf diff --git a/python/vyos/ifconfig/erspan.py b/python/vyos/ifconfig/erspan.py deleted file mode 100755 index 03b2acdbf..000000000 --- a/python/vyos/ifconfig/erspan.py +++ /dev/null @@ -1,170 +0,0 @@ -# Copyright 2019-2021 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 -# License as published by the Free Software Foundation; either -# version 2.1 of the License, or (at your option) any later version. -# -# This library is distributed in the hope that it will be useful, -# but WITHOUT ANY WARRANTY; without even the implied warranty of -# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU -# Lesser General Public License for more details. -# -# You should have received a copy of the GNU Lesser General Public -# License along with this library. If not, see <http://www.gnu.org/licenses/>. - -# https://developers.redhat.com/blog/2019/05/17/an-introduction-to-linux-virtual-interfaces-tunnels/#erspan -# http://vger.kernel.org/lpc_net2018_talks/erspan-linux-presentation.pdf - -from copy import deepcopy - -from netaddr import EUI -from netaddr import mac_unix_expanded -from random import getrandbits - -from vyos.util import dict_search -from vyos.ifconfig.interface import Interface -from vyos.validate import assert_list - -@Interface.register -class _ERSpan(Interface): - """ - _ERSpan: private base class for ERSPAN tunnels - """ - iftype = 'erspan' - definition = { - **Interface.definition, - **{ - 'section': 'erspan', - 'prefixes': ['ersp',], - }, - } - - def __init__(self,ifname,**config): - self.config = deepcopy(config) if config else {} - super().__init__(ifname, **self.config) - - def change_options(self): - pass - - def _create(self): - pass - -class ERSpanIf(_ERSpan): - """ - ERSpanIf: private base class for ERSPAN Over GRE and IPv4 tunnels - """ - - def _create(self): - ifname = self.config['ifname'] - source_address = self.config['source_address'] - remote = self.config['remote'] - key = self.config['parameters']['ip']['key'] - version = self.config['parameters']['version'] - command = f'ip link add dev {ifname} type erspan local {source_address} remote {remote} seq key {key} erspan_ver {version}' - - if int(version) == 1: - idx=dict_search('parameters.erspan.idx',self.config) - if idx: - command += f' erspan {idx}' - elif int(version) == 2: - direction=dict_search('parameters.erspan.direction',self.config) - if direction: - command += f' erspan_dir {direction}' - hwid=dict_search('parameters.erspan.hwid',self.config) - if hwid: - command += f' erspan_hwid {hwid}' - - ttl = dict_search('parameters.ip.ttl',self.config) - if ttl: - command += f' ttl {ttl}' - tos = dict_search('parameters.ip.tos',self.config) - if tos: - command += f' tos {tos}' - - self._cmd(command) - - def change_options(self): - ifname = self.config['ifname'] - source_address = self.config['source_address'] - remote = self.config['remote'] - key = self.config['parameters']['ip']['key'] - version = self.config['parameters']['version'] - command = f'ip link set dev {ifname} type erspan local {source_address} remote {remote} seq key {key} erspan_ver {version}' - - if int(version) == 1: - idx=dict_search('parameters.erspan.idx',self.config) - if idx: - command += f' erspan {idx}' - elif int(version) == 2: - direction=dict_search('parameters.erspan.direction',self.config) - if direction: - command += f' erspan_dir {direction}' - hwid=dict_search('parameters.erspan.hwid',self.config) - if hwid: - command += f' erspan_hwid {hwid}' - - ttl = dict_search('parameters.ip.ttl',self.config) - if ttl: - command += f' ttl {ttl}' - tos = dict_search('parameters.ip.tos',self.config) - if tos: - command += f' tos {tos}' - - self._cmd(command) - -class ER6SpanIf(_ERSpan): - """ - ER6SpanIf: private base class for ERSPAN Over GRE and IPv6 tunnels - """ - - def _create(self): - ifname = self.config['ifname'] - source_address = self.config['source_address'] - remote = self.config['remote'] - key = self.config['parameters']['ip']['key'] - version = self.config['parameters']['version'] - command = f'ip link add dev {ifname} type ip6erspan local {source_address} remote {remote} seq key {key} erspan_ver {version}' - - if int(version) == 1: - idx=dict_search('parameters.erspan.idx',self.config) - if idx: - command += f' erspan {idx}' - elif int(version) == 2: - direction=dict_search('parameters.erspan.direction',self.config) - if direction: - command += f' erspan_dir {direction}' - hwid=dict_search('parameters.erspan.hwid',self.config) - if hwid: - command += f' erspan_hwid {hwid}' - - ttl = dict_search('parameters.ip.ttl',self.config) - if ttl: - command += f' ttl {ttl}' - tos = dict_search('parameters.ip.tos',self.config) - if tos: - command += f' tos {tos}' - - self._cmd(command) - - def change_options(self): - ifname = self.config['ifname'] - source_address = self.config['source_address'] - remote = self.config['remote'] - key = self.config['parameters']['ip']['key'] - version = self.config['parameters']['version'] - command = f'ip link set dev {ifname} type ip6erspan local {source_address} remote {remote} seq key {key} erspan_ver {version}' - - if int(version) == 1: - idx=dict_search('parameters.erspan.idx',self.config) - if idx: - command += f' erspan {idx}' - elif int(version) == 2: - direction=dict_search('parameters.erspan.direction',self.config) - if direction: - command += f' erspan_dir {direction}' - hwid=dict_search('parameters.erspan.hwid',self.config) - if hwid: - command += f' erspan_hwid {hwid}' - - self._cmd(command) diff --git a/python/vyos/ifconfig/tunnel.py b/python/vyos/ifconfig/tunnel.py index e5e1300b2..08854a3b0 100644 --- a/python/vyos/ifconfig/tunnel.py +++ b/python/vyos/ifconfig/tunnel.py @@ -63,6 +63,10 @@ class TunnelIf(Interface): 'parameters.ip.no_pmtu_discovery' : 'nopmtudisc', 'parameters.ip.tos' : 'tos', 'parameters.ip.ttl' : 'ttl', + 'parameters.erspan.direction' : 'erspan_dir', + 'parameters.erspan.hw_id' : 'erspan_hwid', + 'parameters.erspan.index' : 'erspan', + 'parameters.erspan.version' : 'erspan_ver', } mapping_ipv6 = { 'parameters.ipv6.encaplimit' : 'encaplimit', @@ -113,8 +117,12 @@ class TunnelIf(Interface): mapping = { **self.mapping, **self.mapping_ipv4 } cmd = 'ip tunnel add {ifname} mode {encapsulation}' - if self.iftype in ['gretap', 'ip6gretap']: + if self.iftype in ['gretap', 'ip6gretap', 'erspan', 'ip6erspan']: cmd = 'ip link add name {ifname} type {encapsulation}' + # ERSPAN requires the serialisation of packets + if self.iftype in ['erspan', 'ip6erspan']: + cmd += ' seq' + for vyos_key, iproute2_key in mapping.items(): # dict_search will return an empty dict "{}" for valueless nodes like # "parameters.nolearning" - thus we need to test the nodes existence @@ -131,7 +139,7 @@ class TunnelIf(Interface): def _change_options(self): # gretap interfaces do not support changing any parameter - if self.iftype in ['gretap', 'ip6gretap']: + if self.iftype in ['gretap', 'ip6gretap', 'erspan', 'ip6erspan']: return if self.config['encapsulation'] in ['ipip6', 'ip6ip6', 'ip6gre']: diff --git a/python/vyos/template.py b/python/vyos/template.py index 85e4d12b3..7810f5edd 100644 --- a/python/vyos/template.py +++ b/python/vyos/template.py @@ -207,6 +207,11 @@ def network_from_ipv4(address): cidr_prefix = ip_interface(f'{address}/{netmask}').network return address_from_cidr(cidr_prefix) +@register_filter('is_interface') +def is_interface(interface): + """ Check if parameter is a valid local interface name """ + return os.path.exists(f'/sys/class/net/{interface}') + @register_filter('is_ip') def is_ip(addr): """ Check addr if it is an IPv4 or IPv6 address """ |