diff options
| -rw-r--r-- | interface-definitions/interfaces-loopback.xml | 46 | ||||
| -rwxr-xr-x | src/conf_mode/interface-loopback.py | 102 |
2 files changed, 148 insertions, 0 deletions
diff --git a/interface-definitions/interfaces-loopback.xml b/interface-definitions/interfaces-loopback.xml new file mode 100644 index 000000000..267731b1c --- /dev/null +++ b/interface-definitions/interfaces-loopback.xml @@ -0,0 +1,46 @@ +<?xml version="1.0"?> +<interfaceDefinition> + <node name="interfaces"> + <children> + <tagNode name="loopback" owner="${vyos_conf_scripts_dir}/interface-loopback.py"> + <properties> + <help>Loopback interface</help> + <priority>300</priority> + <constraint> + <regex>lo$</regex> + </constraint> + <constraintErrorMessage>Loopback interface must be named lo</constraintErrorMessage> + <valueHelp> + <format>lo</format> + <description>Loopback interface</description> + </valueHelp> + </properties> + <children> + <leafNode name="address"> + <properties> + <help>IP address</help> + <valueHelp> + <format>ipv4net</format> + <description>IPv4 address and prefix length</description> + </valueHelp> + <valueHelp> + <format>ipv6net</format> + <description>IPv6 address and prefix length</description> + </valueHelp> + <multi/> + </properties> + </leafNode> + <leafNode name="description"> + <properties> + <help>Interface description</help> + <constraint> + <regex>^.{1,256}$</regex> + </constraint> + <constraintErrorMessage>Interface description too long (limit 256 characters)</constraintErrorMessage> + </properties> + </leafNode> + </children> + </tagNode> + </children> + </node> +</interfaceDefinition> diff --git a/src/conf_mode/interface-loopback.py b/src/conf_mode/interface-loopback.py new file mode 100755 index 000000000..445a9af64 --- /dev/null +++ b/src/conf_mode/interface-loopback.py @@ -0,0 +1,102 @@ +#!/usr/bin/env python3 +# +# Copyright (C) 2019 VyOS maintainers and contributors +# +# This program is free software; you can redistribute it and/or modify +# it under the terms of the GNU General Public License version 2 or later as +# published by the Free Software Foundation. +# +# This program 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 General Public License for more details. +# +# You should have received a copy of the GNU General Public License +# along with this program. If not, see <http://www.gnu.org/licenses/>. +# +# + +import os +import sys +import copy + +import vyos.configinterface as VyIfconfig + +from vyos.config import Config +from vyos import ConfigError + +default_config_data = { + 'address': [], + 'address_remove': [], + 'deleted': False, + 'description': '', +} + +def diff(first, second): + second = set(second) + return [item for item in first if item not in second] + +def get_config(): + loopback = copy.deepcopy(default_config_data) + conf = Config() + + # determine tagNode instance + try: + loopback['intf'] = os.environ['VYOS_TAGNODE_VALUE'] + except KeyError as E: + print("Interface not specified") + + # Check if interface has been removed + if not conf.exists('interfaces loopback ' + loopback['intf']): + loopback['deleted'] = True + + # set new configuration level + conf.set_level('interfaces loopback ' + loopback['intf']) + + # retrieve configured interface addresses + if conf.exists('address'): + loopback['address'] = conf.return_values('address') + + # retrieve interface description + if conf.exists('description'): + loopback['description'] = conf.return_value('description') + + # Determine interface addresses (currently effective) - to determine which + # address is no longer valid and needs to be removed from the interface + eff_addr = conf.return_effective_values('address') + act_addr = conf.return_values('address') + loopback['address_remove'] = diff(eff_addr, act_addr) + + return loopback + +def verify(loopback): + return None + +def generate(loopback): + return None + +def apply(loopback): + # Remove loopback interface + if not loopback['deleted']: + # update interface description used e.g. within SNMP + VyIfconfig.set_description(loopback['intf'], loopback['description']) + + # Configure interface address(es) + for addr in loopback['address']: + VyIfconfig.add_interface_address(loopback['intf'], addr) + + # Remove interface address(es) + for addr in loopback['address_remove']: + VyIfconfig.remove_interface_address(loopback['intf'], addr) + + return None + +if __name__ == '__main__': + try: + c = get_config() + verify(c) + generate(c) + apply(c) + except ConfigError as e: + print(e) + sys.exit(1) |