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-rw-r--r--python/vyos/defaults.py1
-rw-r--r--python/vyos/dicts.py50
-rw-r--r--python/vyos/ifconfig/dhcp.py194
-rw-r--r--python/vyos/ifconfig/interface.py22
-rw-r--r--python/vyos/ifconfig_vlan.py22
-rw-r--r--python/vyos/template.py55
6 files changed, 191 insertions, 153 deletions
diff --git a/python/vyos/defaults.py b/python/vyos/defaults.py
index a2ad142bc..88894674f 100644
--- a/python/vyos/defaults.py
+++ b/python/vyos/defaults.py
@@ -21,6 +21,7 @@ directories = {
"current": "/opt/vyatta/etc/config-migrate/current",
"migrate": "/opt/vyatta/etc/config-migrate/migrate",
"log": "/var/log/vyatta",
+ "templates": "/usr/share/vyos/templates/"
}
cfg_group = 'vyattacfg'
diff --git a/python/vyos/dicts.py b/python/vyos/dicts.py
new file mode 100644
index 000000000..79cab4a08
--- /dev/null
+++ b/python/vyos/dicts.py
@@ -0,0 +1,50 @@
+#!/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/>.
+
+
+class FixedDict(dict):
+ """
+ FixedDict: A dictionnary not allowing new keys to be created after initialisation.
+
+ >>> f = FixedDict(**{'count':1})
+ >>> f['count'] = 2
+ >>> f['king'] = 3
+ File "...", line ..., in __setitem__
+ raise ConfigError(f'Option "{k}" has no defined default')
+ """
+
+ def __init__(self, **options):
+ self._allowed = options.keys()
+ super().__init__(**options)
+
+ def __setitem__(self, k, v):
+ """
+ __setitem__ is a builtin which is called by python when setting dict values:
+ >>> d = dict()
+ >>> d['key'] = 'value'
+ >>> d
+ {'key': 'value'}
+
+ is syntaxic sugar for
+
+ >>> d = dict()
+ >>> d.__setitem__('key','value')
+ >>> d
+ {'key': 'value'}
+ """
+ if k not in self._allowed:
+ raise ConfigError(f'Option "{k}" has no defined default')
+ super().__setitem__(k, v)
diff --git a/python/vyos/ifconfig/dhcp.py b/python/vyos/ifconfig/dhcp.py
index 8ec8263b5..d4ff9c2cd 100644
--- a/python/vyos/ifconfig/dhcp.py
+++ b/python/vyos/ifconfig/dhcp.py
@@ -14,105 +14,37 @@
# License along with this library. If not, see <http://www.gnu.org/licenses/>.
import os
-import jinja2
+from vyos.dicts import FixedDict
from vyos.ifconfig.control import Control
+from vyos.template import render
-template_v4 = """
-# generated by ifconfig.py
-option rfc3442-classless-static-routes code 121 = array of unsigned integer 8;
-timeout 60;
-retry 300;
-
-interface "{{ intf }}" {
- send host-name "{{ hostname }}";
- {% if client_id -%}
- send dhcp-client-identifier "{{ client_id }}";
- {% endif -%}
- {% if vendor_class_id -%}
- send vendor-class-identifier "{{ vendor_class_id }}";
- {% endif -%}
- request subnet-mask, broadcast-address, routers, domain-name-servers,
- rfc3442-classless-static-routes, domain-name, interface-mtu;
- require subnet-mask;
-}
-
-"""
-
-template_v6 = """
-# generated by ifconfig.py
-interface "{{ intf }}" {
- request routers, domain-name-servers, domain-name;
-}
-
-"""
-
-class DHCP (Control):
+
+class _DHCP (Control):
client_base = r'/var/lib/dhcp/dhclient_'
- def __init__ (self, ifname, **kargs):
+ def __init__(self, ifname, version, **kargs):
super().__init__(**kargs)
-
- # per interface DHCP config files
- self._dhcp = {
- 4: {
- 'ifname': ifname,
- 'conf': self.client_base + ifname + '.conf',
- 'pid': self.client_base + ifname + '.pid',
- 'lease': self.client_base + ifname + '.leases',
- 'options': {
- 'intf': ifname,
- 'hostname': '',
- 'client_id': '',
- 'vendor_class_id': ''
- },
- },
- 6: {
- 'ifname': ifname,
- 'conf': self.client_base + ifname + '.v6conf',
- 'pid': self.client_base + ifname + '.v6pid',
- 'lease': self.client_base + ifname + '.v6leases',
- 'accept_ra': f'/proc/sys/net/ipv6/conf/{ifname}/accept_ra',
- 'options': {
- 'intf': ifname,
- 'dhcpv6_prm_only': False,
- 'dhcpv6_temporary': False
- },
- },
+ self.version = version
+ self.file = {
+ 'ifname': ifname,
+ 'conf': self.client_base + ifname + '.' + version + 'conf',
+ 'pid': self.client_base + ifname + '.' + version + 'pid',
+ 'lease': self.client_base + ifname + '.' + version + 'leases',
}
- def get_dhcp_options(self):
- """
- Return dictionary with supported DHCP options.
-
- Dictionary should be altered and send back via set_dhcp_options()
- so those options are applied when DHCP is run.
- """
- return self._dhcp[4]['options']
-
- def set_dhcp_options(self, options):
- """
- Store new DHCP options used by next run of DHCP client.
- """
- self._dhcp[4]['options'] = options
-
- def get_dhcpv6_options(self):
- """
- Return dictionary with supported DHCPv6 options.
-
- Dictionary should be altered and send back via set_dhcp_options()
- so those options are applied when DHCP is run.
- """
- return self._dhcp[6]['options']
-
- def set_dhcpv6_options(self, options):
- """
- Store new DHCP options used by next run of DHCP client.
- """
- self._dhcp[6]['options'] = options
+class _DHCPv4 (_DHCP):
+ def __init__(self, ifname):
+ super().__init__(ifname, '')
+ self.options = FixedDict(**{
+ 'ifname': ifname,
+ 'hostname': '',
+ 'client_id': '',
+ 'vendor_class_id': ''
+ })
# replace dhcpv4/v6 with systemd.networkd?
- def _set_dhcp(self):
+ def set(self):
"""
Configure interface as DHCP client. The dhclient binary is automatically
started in background!
@@ -121,21 +53,16 @@ class DHCP (Control):
>>> from vyos.ifconfig import Interface
>>> j = Interface('eth0')
- >>> j.set_dhcp()
+ >>> j.dhcp.v4.set()
"""
- dhcp = self.get_dhcp_options()
- if not dhcp['hostname']:
+ if not self.options['hostname']:
# read configured system hostname.
# maybe change to vyos hostd client ???
with open('/etc/hostname', 'r') as f:
- dhcp['hostname'] = f.read().rstrip('\n')
+ self.options['hostname'] = f.read().rstrip('\n')
- # render DHCP configuration
- tmpl = jinja2.Template(template_v4)
- dhcp_text = tmpl.render(dhcp)
- with open(self._dhcp[4]['conf'], 'w') as f:
- f.write(dhcp_text)
+ render(self.file['conf'], 'dhcp-client/ipv4.tmpl' ,self.options)
cmd = 'start-stop-daemon'
cmd += ' --start'
@@ -146,9 +73,9 @@ class DHCP (Control):
cmd += ' --'
# now pass arguments to dhclient binary
cmd += ' -4 -nw -cf {conf} -pf {pid} -lf {lease} {ifname}'
- return self._cmd(cmd.format(**self._dhcp[4]))
+ return self._cmd(cmd.format(**self.file))
- def _del_dhcp(self):
+ def delete(self):
"""
De-configure interface as DHCP clinet. All auto generated files like
pid, config and lease will be removed.
@@ -157,14 +84,14 @@ class DHCP (Control):
>>> from vyos.ifconfig import Interface
>>> j = Interface('eth0')
- >>> j.del_dhcp()
+ >>> j.dhcp.v4.delete()
"""
- if not os.path.isfile(self._dhcp[4]['pid']):
+ if not os.path.isfile(self.file['pid']):
self._debug_msg('No DHCP client PID found')
return None
- # with open(self._dhcp[4]['pid'], 'r') as f:
- # pid = int(f.read())
+ # with open(self.file['pid'], 'r') as f:
+ # pid = int(f.read())
# stop dhclient, we need to call dhclient and tell it should release the
# aquired IP address. tcpdump tells me:
@@ -178,14 +105,27 @@ class DHCP (Control):
# Hostname Option 12, length 10: "vyos"
#
cmd = '/sbin/dhclient -cf {conf} -pf {pid} -lf {lease} -r {ifname}'
- self._cmd(cmd.format(**self._dhcp[4]))
+ self._cmd(cmd.format(**self.file))
# cleanup old config files
for name in ('conf', 'pid', 'lease'):
- if os.path.isfile(self._dhcp[4][name]):
- os.remove(self._dhcp[4][name])
+ if os.path.isfile(self.file[name]):
+ os.remove(self.file[name])
+
- def _set_dhcpv6(self):
+class _DHCPv6 (_DHCP):
+ def __init__(self, ifname):
+ super().__init__(ifname, 'v6')
+ self.options = FixedDict(**{
+ 'ifname': ifname,
+ 'dhcpv6_prm_only': False,
+ 'dhcpv6_temporary': False,
+ })
+ self.file.update({
+ 'accept_ra': f'/proc/sys/net/ipv6/conf/{ifname}/accept_ra',
+ })
+
+ def set(self):
"""
Configure interface as DHCPv6 client. The dhclient binary is automatically
started in background!
@@ -196,22 +136,17 @@ class DHCP (Control):
>>> j = Interface('eth0')
>>> j.set_dhcpv6()
"""
- dhcpv6 = self.get_dhcpv6_options()
# better save then sorry .. should be checked in interface script
# but if you missed it we are safe!
- if dhcpv6['dhcpv6_prm_only'] and dhcpv6['dhcpv6_temporary']:
+ if self.options['dhcpv6_prm_only'] and self.options['dhcpv6_temporary']:
raise Exception(
'DHCPv6 temporary and parameters-only options are mutually exclusive!')
- # render DHCP configuration
- tmpl = jinja2.Template(template_v6)
- dhcpv6_text = tmpl.render(dhcpv6)
- with open(self._dhcp[6]['conf'], 'w') as f:
- f.write(dhcpv6_text)
+ render(self.file['conf'], 'dhcp-client/ipv6.tmpl', self.options)
# no longer accept router announcements on this interface
- self._write_sysfs(self._dhcp[6]['accept_ra'], 0)
+ self._write_sysfs(self.file['accept_ra'], 0)
# assemble command-line to start DHCPv6 client (dhclient)
cmd = 'start-stop-daemon'
@@ -224,15 +159,15 @@ class DHCP (Control):
# now pass arguments to dhclient binary
cmd += ' -6 -nw -cf {conf} -pf {pid} -lf {lease}'
# add optional arguments
- if dhcpv6['dhcpv6_prm_only']:
+ if self.options['dhcpv6_prm_only']:
cmd += ' -S'
- if dhcpv6['dhcpv6_temporary']:
+ if self.options['dhcpv6_temporary']:
cmd += ' -T'
cmd += ' {ifname}'
- return self._cmd(cmd.format(**self._dhcp[6]))
+ return self._cmd(cmd.format(**self.file))
- def _del_dhcpv6(self):
+ def delete(self):
"""
De-configure interface as DHCPv6 clinet. All auto generated files like
pid, config and lease will be removed.
@@ -243,12 +178,12 @@ class DHCP (Control):
>>> j = Interface('eth0')
>>> j.del_dhcpv6()
"""
- if not os.path.isfile(self._dhcp[6]['pid']):
+ if not os.path.isfile(self.file['pid']):
self._debug_msg('No DHCPv6 client PID found')
return None
- # with open(self._dhcp[6]['pid'], 'r') as f:
- # pid = int(f.read())
+ # with open(self.file['pid'], 'r') as f:
+ # pid = int(f.read())
# stop dhclient
cmd = 'start-stop-daemon'
@@ -256,13 +191,18 @@ class DHCP (Control):
cmd += ' --oknodo'
cmd += ' --quiet'
cmd += ' --pidfile {pid}'
- self._cmd(cmd.format(**self._dhcp[6]))
+ self._cmd(cmd.format(**self.file))
# accept router announcements on this interface
- self._write_sysfs(self._dhcp[6]['accept_ra'], 1)
+ self._write_sysfs(self.options['accept_ra'], 1)
# cleanup old config files
for name in ('conf', 'pid', 'lease'):
- if os.path.isfile(self._dhcp[6][name]):
- os.remove(self._dhcp[6][name])
+ if os.path.isfile(self.file[name]):
+ os.remove(self.file[name])
+
+class DHCP (object):
+ def __init__(self, ifname):
+ self.v4 = _DHCPv4(ifname)
+ self.v6 = _DHCPv6(ifname)
diff --git a/python/vyos/ifconfig/interface.py b/python/vyos/ifconfig/interface.py
index 22c71a464..43f823eca 100644
--- a/python/vyos/ifconfig/interface.py
+++ b/python/vyos/ifconfig/interface.py
@@ -41,8 +41,10 @@ from vyos.validate import assert_mtu
from vyos.validate import assert_positive
from vyos.validate import assert_range
+from vyos.ifconfig.control import Control
-class Interface(DHCP):
+
+class Interface(Control):
options = []
required = []
default = {
@@ -181,7 +183,8 @@ class Interface(DHCP):
self.config['ifname'] = ifname
# we must have updated config before initialising the Interface
- super().__init__(ifname, **kargs)
+ super().__init__(**kargs)
+ self.dhcp = DHCP(ifname)
if not os.path.exists('/sys/class/net/{}'.format(self.config['ifname'])):
# Any instance of Interface, such as Interface('eth0')
@@ -224,8 +227,8 @@ class Interface(DHCP):
>>> i.remove()
"""
# stop DHCP(v6) if running
- self._del_dhcp()
- self._del_dhcpv6()
+ self.dhcp.v4.delete()
+ self.dhcp.v6.delete()
# remove all assigned IP addresses from interface - this is a bit redundant
# as the kernel will remove all addresses on interface deletion, but we
@@ -668,12 +671,13 @@ class Interface(DHCP):
# do not change below 'if' ordering esle you will get an exception as:
# ValueError: 'dhcp' does not appear to be an IPv4 or IPv6 address
if addr != 'dhcp' and is_ipv4(addr):
- raise ConfigError("Can't configure both static IPv4 and DHCP address on the same interface")
+ raise ConfigError(
+ "Can't configure both static IPv4 and DHCP address on the same interface")
if addr == 'dhcp':
- self._set_dhcp()
+ self.dhcp.v4.set()
elif addr == 'dhcpv6':
- self._set_dhcpv6()
+ self.dhcp.v6.set()
else:
if not is_intf_addr_assigned(self.config['ifname'], addr):
cmd = 'ip addr add "{}" dev "{}"'.format(addr, self.config['ifname'])
@@ -702,9 +706,9 @@ class Interface(DHCP):
['2001:db8::ffff/64']
"""
if addr == 'dhcp':
- self._del_dhcp()
+ self.dhcp.v4.delete()
elif addr == 'dhcpv6':
- self._del_dhcpv6()
+ self.dhcp.v6.delete()
else:
if is_intf_addr_assigned(self.config['ifname'], addr):
cmd = 'ip addr del "{}" dev "{}"'.format(addr, self.config['ifname'])
diff --git a/python/vyos/ifconfig_vlan.py b/python/vyos/ifconfig_vlan.py
index ed22646c1..899fd17da 100644
--- a/python/vyos/ifconfig_vlan.py
+++ b/python/vyos/ifconfig_vlan.py
@@ -25,32 +25,20 @@ def apply_vlan_config(vlan, config):
if not vlan.definition['vlan']:
raise TypeError()
- # get DHCP config dictionary and update values
- opt = vlan.get_dhcp_options()
-
if config['dhcp_client_id']:
- opt['client_id'] = config['dhcp_client_id']
+ vlan.dhcp.v4.options['client_id'] = config['dhcp_client_id']
if config['dhcp_hostname']:
- opt['hostname'] = config['dhcp_hostname']
+ vlan.dhcp.v4.options['hostname'] = config['dhcp_hostname']
if config['dhcp_vendor_class_id']:
- opt['vendor_class_id'] = config['dhcp_vendor_class_id']
-
- # store DHCP config dictionary - used later on when addresses are aquired
- vlan.set_dhcp_options(opt)
-
- # get DHCPv6 config dictionary and update values
- opt = vlan.get_dhcpv6_options()
+ vlan.dhcp.v4.options['vendor_class_id'] = config['dhcp_vendor_class_id']
if config['dhcpv6_prm_only']:
- opt['dhcpv6_prm_only'] = True
+ vlan.dhcp.v6.options['dhcpv6_prm_only'] = True
if config['dhcpv6_temporary']:
- opt['dhcpv6_temporary'] = True
-
- # store DHCPv6 config dictionary - used later on when addresses are aquired
- vlan.set_dhcpv6_options(opt)
+ vlan.dhcp.v6.options['dhcpv6_temporary'] = True
# update interface description used e.g. within SNMP
vlan.set_alias(config['description'])
diff --git a/python/vyos/template.py b/python/vyos/template.py
new file mode 100644
index 000000000..e559120c0
--- /dev/null
+++ b/python/vyos/template.py
@@ -0,0 +1,55 @@
+# Copyright 2019 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/>.
+
+import os
+
+from jinja2 import Environment
+from jinja2 import FileSystemLoader
+
+from vyos.defaults import directories
+
+
+# reuse the same Environment to improve performance
+_templates_env = Environment(loader=FileSystemLoader(directories['templates']))
+_templates_mem = {}
+
+def render(destination, template, content):
+ """
+ render a template from the template directory, it will raise on any errors
+ destination: the file where the rendered template must be saved
+ template: the path to the template relative to the template folder
+ content: the dictionary to use to render the template
+
+ This classes cache the renderer, so rendering the same file multiple time
+ does not cause as too much overhead. If use everywhere, it could be changed
+ and load the template from python environement variables from an import
+ python module generated when the debian package is build
+ (recovering the load time and overhead caused by having the file out of the code)
+ """
+
+ # Setup a renderer for the given template
+ # This is cached and re-used for performance
+ if template not in _templates_mem:
+ _templates_mem[template] = _templates_env.get_template(template)
+ template = _templates_mem[template]
+
+ # As we are opening the file with 'w', we are performing the rendering
+ # before calling open() to not accidentally erase the file if the
+ # templating fails
+ content = template.render(content)
+
+ # Write client config file
+ with open(destination, 'w') as f:
+ f.write(content)
generated by cgit v1.2.3 (git 2.39.1) at 2024-11-27 02:18:08 +0000