diff options
Diffstat (limited to 'src/conf_mode')
| -rwxr-xr-x | src/conf_mode/bcast_relay.py | 167 | ||||
| -rwxr-xr-x | src/conf_mode/dhcp_server.py | 804 | ||||
| -rwxr-xr-x | src/conf_mode/dhcpv6_server.py | 451 | ||||
| -rwxr-xr-x | src/conf_mode/mdns_repeater.py | 92 | ||||
| -rwxr-xr-x | src/conf_mode/ntp.py | 8 | ||||
| -rwxr-xr-x | src/conf_mode/snmp.py | 210 | ||||
| -rwxr-xr-x | src/conf_mode/ssh.py | 4 | ||||
| -rwxr-xr-x | src/conf_mode/syslog.py | 14 | ||||
| -rwxr-xr-x | src/conf_mode/tftp_server.py | 155 | ||||
| -rwxr-xr-x | src/conf_mode/vrrp.py | 4 | ||||
| -rwxr-xr-x | src/conf_mode/wireguard.py | 242 |
11 files changed, 1869 insertions, 282 deletions
diff --git a/src/conf_mode/bcast_relay.py b/src/conf_mode/bcast_relay.py index 95f6215b5..d1257d4a5 100755 --- a/src/conf_mode/bcast_relay.py +++ b/src/conf_mode/bcast_relay.py @@ -19,56 +19,104 @@ import sys import os import fnmatch -import subprocess +import jinja2 from vyos.config import Config from vyos import ConfigError config_file = r'/etc/default/udp-broadcast-relay' +config_tmpl = """ +### Autogenerated by bcast_relay.py ### + +# UDP broadcast relay configuration for instance {{ id }} +{%- if description %} +# Comment: {{ description }} +{% endif -%} +DAEMON_ARGS="{% if address %}-s {{ address }} {% endif %}{{ id }} {{ port }} {{ interfaces | join(' ') }}" +""" + +default_config_data = { + 'disabled': False, + 'instances': [] +} + def get_config(): + relay = default_config_data conf = Config() - conf.set_level("service broadcast-relay id") - relay_id = conf.list_nodes("") - relays = [] - - for id in relay_id: - interface_list = [] - address = conf.return_value("{0} address".format(id)) - description = conf.return_value("{0} description".format(id)) - port = conf.return_value("{0} port".format(id)) - - # split the interface name listing and form a list - if conf.exists("{0} interface".format(id)): - intfs_names = [] - intfs_names = conf.return_values("{0} interface".format(id)) - - for name in intfs_names: - interface_list.append(name) - - relay = { - "id": id, - "address": address, - "description": description, - "interfaces" : interface_list, - "port": port + if not conf.exists('service broadcast-relay'): + return None + else: + conf.set_level('service broadcast-relay') + + # Service can be disabled by user + if conf.exists('disable'): + relay['disabled'] = True + return relay + + # Parse configuration of each individual instance + if conf.exists('id'): + for id in conf.list_nodes('id'): + conf.set_level('service broadcast-relay id {0}'.format(id)) + config = { + 'id': id, + 'disabled': False, + 'address': '', + 'description': '', + 'interfaces': [], + 'port': '' } - relays.append(relay) - return relays + # Check if individual broadcast relay service is disabled + if conf.exists('disable'): + config['disabled'] = True + + # Source IP of forwarded packets, if empty original senders address is used + if conf.exists('address'): + config['address'] = conf.return_value('address') + + # A description for each individual broadcast relay service + if conf.exists('description'): + config['description'] = conf.return_value('description') + + # UDP port to listen on for broadcast frames + if conf.exists('port'): + config['port'] = conf.return_value('port') + + # Network interfaces to listen on for broadcast frames to be relayed + if conf.exists('interface'): + config['interfaces'] = conf.return_values('interface') + + relay['instances'].append(config) -def verify(relays): - for relay in relays: - if not relay["port"]: - raise ConfigError("UDP broadcast relay 'id {0}' requires a port number".format(relay["id"])) + return relay - if len(relay["interfaces"]) < 2: - raise ConfigError("UDP broadcast relay 'id {0}' requires at least 2 interfaces".format(relay["id"])) +def verify(relay): + if relay is None: + return None + + if relay['disabled']: + return None + + for r in relay['instances']: + # we don't have to check this instance when it's disabled + if r['disabled']: + continue + + # we certainly require a UDP port to listen to + if not r['port']: + raise ConfigError('UDP broadcast relay "{0}" requires a port number'.format(r['id'])) + + # Relaying data without two interface is kinda senseless ... + if len(r['interfaces']) < 2: + raise ConfigError('UDP broadcast relay "id {0}" requires at least 2 interfaces'.format(r['id'])) return None -def generate(relays): - config_header = '### Autogenerated by bcast_relay.py ###\n' + +def generate(relay): + if relay is None: + return None config_dir = os.path.dirname(config_file) config_filename = os.path.basename(config_file) @@ -82,32 +130,43 @@ def generate(relays): # sort our list active_configs.sort() + # delete old configuration files for id in active_configs[:]: - os.unlink(config_file + id) - - for relay in relays: - file = config_file + str(relay["id"]) - interfaces = ' '.join(str(intf) for intf in relay["interfaces"]) - config_args = 'DAEMON_ARGS="{0} {1}"\n'.format(relay["port"], interfaces) - - f = open(file, 'w') - f.write(config_header) - if relay["description"]: - f.write('# ' + relay["description"] + '\n') - f.write(config_args) - f.close() + if os.path.exists(config_file + id): + os.unlink(config_file + id) + + # If the service is disabled, we can bail out here + if relay['disabled']: + print('Warning: UDP broadcast relay service will be deactivated because it is disabled') + return None + + for r in relay['instances']: + # Skip writing instance config when it's disabled + if r['disabled']: + continue + + # configuration filename contains instance id + file = config_file + str(r['id']) + tmpl = jinja2.Template(config_tmpl) + config_text = tmpl.render(r) + with open(file, 'w') as f: + f.write(config_text) return None -def apply(relays): +def apply(relay): # first stop all running services - cmd = "sudo systemctl stop udp-broadcast-relay@{1..99}" - os.system(cmd) + os.system('sudo systemctl stop udp-broadcast-relay@{1..99}') + + if (relay is None) or relay['disabled']: + return None # start only required service instances - for relay in relays: - cmd = "sudo systemctl start udp-broadcast-relay@{0}".format(relay["id"]) - os.system(cmd) + for r in relay['instances']: + # Don't start individual instance when it's disabled + if r['disabled']: + continue + os.system('sudo systemctl start udp-broadcast-relay@{0}'.format(r['id'])) return None diff --git a/src/conf_mode/dhcp_server.py b/src/conf_mode/dhcp_server.py new file mode 100755 index 000000000..2a2b1fe6c --- /dev/null +++ b/src/conf_mode/dhcp_server.py @@ -0,0 +1,804 @@ +#!/usr/bin/env python3 +# +# Copyright (C) 2018 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 sys +import os +import ipaddress +import jinja2 +import socket +import struct + +import vyos.validate + +from vyos.config import Config +from vyos import ConfigError + +config_file = r'/etc/dhcp/dhcpd.conf' +lease_file = r'/config/dhcpd.leases' +daemon_config_file = r'/etc/default/isc-dhcp-server' + +# Please be careful if you edit the template. +config_tmpl = """ +### Autogenerated by dhcp_server.py ### + +# For options please consult the following website: +# https://www.isc.org/wp-content/uploads/2017/08/dhcp43options.html +# +# log-facility local7; + +{% if hostfile_update %} +on commit { + set ClientName = pick-first-value(host-decl-name, option fqdn.hostname, option host-name); + set ClientIp = binary-to-ascii(10, 8, ".", leased-address); + set ClientMac = binary-to-ascii(16, 8, ":", substring(hardware, 1, 6)); + set ClientDomain = pick-first-value(config-option domain-name, "..YYZ!"); + execute("/usr/libexec/vyos/system/on-dhcp-event.sh", "commit", ClientName, ClientIp, ClientMac, ClientDomain); +} + +on release { + set ClientName = pick-first-value(host-decl-name, option fqdn.hostname, option host-name); + set ClientIp = binary-to-ascii(10, 8, ".",leased-address); + set ClientMac = binary-to-ascii(16, 8, ":",substring(hardware, 1, 6)); + set ClientDomain = pick-first-value(config-option domain-name, "..YYZ!"); + execute("/usr/libexec/vyos/system/on-dhcp-event.sh", "release", ClientName, ClientIp, ClientMac, ClientDomain); +} + +on expiry { + set ClientName = pick-first-value(host-decl-name, option fqdn.hostname, option host-name); + set ClientIp = binary-to-ascii(10, 8, ".",leased-address); + set ClientMac = binary-to-ascii(16, 8, ":",substring(hardware, 1, 6)); + set ClientDomain = pick-first-value(config-option domain-name, "..YYZ!"); + execute("/usr/libexec/vyos/system/on-dhcp-event.sh", "release", ClientName, ClientIp, ClientMac, ClientDomain); +} +{% endif %} +ddns-update-style {% if ddns_enable -%} interim {%- else -%} none {%- endif %}; +{% if static_route -%} +option rfc3442-static-route code 121 = array of integer 8; +option windows-static-route code 249 = array of integer 8; +{%- endif %} +{% if static_route -%} +option wpad-url code 252 = text; +{% endif %} + +{%- if global_parameters %} +# The following {{ global_parameters | length }} line(s) were added as global-parameters in the CLI and have not been validated +{%- for param in global_parameters %} +{{ param }} +{%- endfor -%} +{%- endif %} + +# Failover configuration +{% for network in shared_network %} +{%- if not network.disabled -%} +{%- for subnet in network.subnet %} +{%- if subnet.failover_name -%} +failover peer "{{ subnet.failover_name }}" { +{%- if subnet.failover_status == 'primary' %} + primary; + mclt 1800; + split 128; +{%- elif subnet.failover_status == 'secondary' %} + secondary; +{%- endif %} + address {{ subnet.failover_local_addr }}; + port 520; + peer address {{ subnet.failover_peer_addr }}; + peer port 520; + max-response-delay 30; + max-unacked-updates 10; + load balance max seconds 3; +} +{% endif -%} +{% endfor -%} +{% endif -%} +{% endfor %} + +# Shared network configration(s) +{% for network in shared_network %} +{%- if not network.disabled -%} +shared-network {{ network.name }} { + {{ "authoritative;" if network.authoritative }} + {%- if network.network_parameters %} + # The following {{ network.network_parameters | length }} line(s) were added as shared-network-parameters in the CLI and have not been validated + {%- for param in network.network_parameters %} + {{ param }} + {%- endfor %} + {%- endif %} + {%- for subnet in network.subnet %} + subnet {{ subnet.address }} netmask {{ subnet.netmask }} { + {%- if subnet.dns_server %} + option domain-name-servers {{ subnet.dns_server | join(', ') }}; + {%- endif %} + {%- if subnet.domain_search %} + option domain-search {{ subnet.domain_search | join(', ') }}; + {%- endif %} + {%- if subnet.ntp_server %} + option ntp-servers {{ subnet.ntp_server | join(', ') }}; + {%- endif %} + {%- if subnet.pop_server %} + option pop-server {{ subnet.pop_server | join(', ') }}; + {%- endif %} + {%- if subnet.smtp_server %} + option smtp-server {{ subnet.smtp_server | join(', ') }}; + {%- endif %} + {%- if subnet.time_server %} + option time-servers {{ subnet.time_server | join(', ') }}; + {%- endif %} + {%- if subnet.wins_server %} + option netbios-name-servers {{ subnet.wins_server | join(', ') }}; + {%- endif %} + {%- if subnet.static_route %} + option rfc3442-static-route {{ subnet.static_route }}; + option windows-static-route {{ subnet.static_route }}; + {%- endif %} + {%- if subnet.ip_forwarding %} + option ip-forwarding true; + {%- endif -%} + {%- if subnet.default_router %} + option routers {{ subnet.default_router }}; + {%- endif -%} + {%- if subnet.server_identifier %} + option dhcp-server-identifier {{ subnet.server_identifier }}; + {%- endif -%} + {%- if subnet.domain_name %} + option domain-name "{{ subnet.domain_name }}"; + {%- endif -%} + {%- if subnet.tftp_server %} + option tftp-server-name "{{ subnet.tftp_server }}"; + {%- endif -%} + {%- if subnet.bootfile_name %} + option bootfile-name "{{ subnet.bootfile_name }}"; + filename "{{ subnet.bootfile_name }}"; + {%- endif -%} + {%- if subnet.bootfile_server %} + next-server {{ subnet.bootfile_server }}; + {%- endif -%} + {%- if subnet.time_offset %} + option time-offset {{ subnet.time_offset }}; + {%- endif -%} + {%- if subnet.wpad_url %} + option wpad-url "{{ subnet.wpad_url }}"; + {%- endif -%} + {%- if subnet.client_prefix_length %} + option subnet-mask {{ subnet.client_prefix_length }}; + {%- endif -%} + {% if subnet.lease %} + default-lease-time {{ subnet.lease }}; + max-lease-time {{ subnet.lease }}; + {%- endif -%} + {%- for host in subnet.static_mapping %} + {% if not host.disabled -%} + host {{ network.name }}_{{ host.name }} { + fixed-address {{ host.ip_address }}; + hardware ethernet {{ host.mac_address }}; + {%- if host.static_parameters %} + # The following {{ host.static_parameters | length }} line(s) were added as static-mapping-parameters in the CLI and have not been validated + {%- for param in host.static_parameters %} + {{ param }} + {%- endfor -%} + {%- endif %} + } + {%- endif %} + {%- endfor %} + {%- if subnet.failover_name %} + pool { + failover peer "{{ subnet.failover_name }}"; + deny dynamic bootp clients; + {%- for range in subnet.range %} + range {{ range.start }} {{ range.stop }}; + {%- endfor %} + } + {%- else %} + {%- for range in subnet.range %} + range {{ range.start }} {{ range.stop }}; + {%- endfor %} + {%- endif %} + } + {%- endfor %} + on commit { set shared-networkname = "{{ network.name }}"; } +} +{%- endif %} +{% endfor %} +""" + +daemon_tmpl = """ +### Autogenerated by dhcp_server.py ### + +# sourced by /etc/init.d/isc-dhcp-server + +DHCPD_CONF=/etc/dhcp/dhcpd.conf +DHCPD_PID=/var/run/dhcpd.pid +OPTIONS="-4 -lf {{ lease_file }}" +INTERFACES="" +""" + +default_config_data = { + 'lease_file': lease_file, + 'disabled': False, + 'ddns_enable': False, + 'global_parameters': [], + 'hostfile_update': False, + 'static_route': False, + 'wpad': False, + 'shared_network': [], +} + +def get_config(): + dhcp = default_config_data + conf = Config() + if not conf.exists('service dhcp-server'): + return None + else: + conf.set_level('service dhcp-server') + + # check for global disable of DHCP service + if conf.exists('disable'): + dhcp['disabled'] = True + + # check for global dynamic DNS upste + if conf.exists('dynamic-dns-update'): + dhcp['ddns_enable'] = True + + # HACKS AND TRICKS + # + # check for global 'raw' ISC DHCP parameters configured by users + # actually this is a bad idea in general to pass raw parameters from any user + if conf.exists('global-parameters'): + dhcp['global_parameters'] = conf.return_values('global-parameters') + + # check for global DHCP server updating /etc/host per lease + if conf.exists('hostfile-update'): + dhcp['hostfile_update'] = True + + # check for multiple, shared networks served with DHCP addresses + if conf.exists('shared-network-name'): + for network in conf.list_nodes('shared-network-name'): + conf.set_level('service dhcp-server shared-network-name {0}'.format(network)) + config = { + 'name': network, + 'authoritative': False, + 'description': '', + 'disabled': False, + 'network_parameters': [], + 'subnet': [] + } + # check if DHCP server should be authoritative on this network + if conf.exists('authoritative'): + config['authoritative'] = True + + # A description for this given network + if conf.exists('description'): + config['description'] = conf.return_value('description') + + # If disabled, the shared-network configuration becomes inactive in + # the running DHCP server instance + if conf.exists('disable'): + config['disabled'] = True + + # HACKS AND TRICKS + # + # check for 'raw' ISC DHCP parameters configured by users + # actually this is a bad idea in general to pass raw parameters + # from any user + # + # deprecate this and issue a warning like we do for DNS forwarding? + if conf.exists('shared-network-parameters'): + config['network_parameters'] = conf.return_values('shared-network-parameters') + + # check for multiple subnet configurations in a shared network + # config segment + if conf.exists('subnet'): + for net in conf.list_nodes('subnet'): + conf.set_level('service dhcp-server shared-network-name {0} subnet {1}'.format(network, net)) + subnet = { + 'network': net, + 'address': str(ipaddress.ip_network(net).network_address), + 'netmask': str(ipaddress.ip_network(net).netmask), + 'bootfile_name': '', + 'bootfile_server': '', + 'client_prefix_length': '', + 'default_router': '', + 'dns_server': [], + 'domain_name': '', + 'domain_search': [], + 'exclude': [], + 'failover_local_addr': '', + 'failover_name': '', + 'failover_peer_addr': '', + 'failover_status': '', + 'ip_forwarding': False, + 'lease': '86400', + 'ntp_server': [], + 'pop_server': [], + 'server_identifier': '', + 'smtp_server': [], + 'range': [], + 'static_mapping': [], + 'static_subnet': '', + 'static_router': '', + 'static_route': '', + 'subnet_parameters': [], + 'tftp_server': '', + 'time_offset': '', + 'time_server': [], + 'wins_server': [], + 'wpad_url': '' + } + + # Used to identify a bootstrap file + if conf.exists('bootfile-name'): + subnet['bootfile_name'] = conf.return_value('bootfile-name') + + # Specify host address of the server from which the initial boot file + # (specified above) is to be loaded. Should be a numeric IP address or + # domain name. + if conf.exists('bootfile-server'): + subnet['bootfile_server'] = conf.return_value('bootfile-server') + + # The subnet mask option specifies the client's subnet mask as per RFC 950. If no subnet + # mask option is provided anywhere in scope, as a last resort dhcpd will use the subnet + # mask from the subnet declaration for the network on which an address is being assigned. + if conf.exists('client-prefix-length'): + # snippet borrowed from https://stackoverflow.com/questions/33750233/convert-cidr-to-subnet-mask-in-python + host_bits = 32 - int(conf.return_value('client-prefix-length')) + subnet['client_prefix_length'] = socket.inet_ntoa(struct.pack('!I', (1 << 32) - (1 << host_bits))) + + # Default router IP address on the client's subnet + if conf.exists('default-router'): + subnet['default_router'] = conf.return_value('default-router') + + # Specifies a list of Domain Name System (STD 13, RFC 1035) name servers available to + # the client. Servers should be listed in order of preference. + if conf.exists('dns-server'): + subnet['dns_server'] = conf.return_values('dns-server') + + # Option specifies the domain name that client should use when resolving hostnames + # via the Domain Name System. + if conf.exists('domain-name'): + subnet['domain_name'] = conf.return_value('domain-name') + + # The domain-search option specifies a 'search list' of Domain Names to be used + # by the client to locate not-fully-qualified domain names. + if conf.exists('domain-search'): + for domain in conf.return_values('domain-search'): + subnet['domain_search'].append('"' + domain + '"') + + # IP address (local) for failover peer to connect + if conf.exists('failover local-address'): + subnet['failover_local_addr'] = conf.return_value('failover local-address') + + # DHCP failover peer name + if conf.exists('failover name'): + subnet['failover_name'] = conf.return_value('failover name') + + # IP address (remote) of failover peer + if conf.exists('failover peer-address'): + subnet['failover_peer_addr'] = conf.return_value('failover peer-address') + + # DHCP failover peer status (primary|secondary) + if conf.exists('failover status'): + subnet['failover_status'] = conf.return_value('failover status') + + # Option specifies whether the client should configure its IP layer for packet + # forwarding + if conf.exists('ip-forwarding'): + subnet['ip_forwarding'] = True + + # Time should be the length in seconds that will be assigned to a lease if the + # client requesting the lease does not ask for a specific expiration time + if conf.exists('lease'): + subnet['lease'] = conf.return_value('lease') + + # Specifies a list of IP addresses indicating NTP (RFC 5905) servers available + # to the client. + if conf.exists('ntp-server'): + subnet['ntp_server'] = conf.return_values('ntp-server') + + # POP3 server option specifies a list of POP3 servers available to the client. + # Servers should be listed in order of preference. + if conf.exists('pop-server'): + subnet['pop_server'] = conf.return_values('pop-server') + + # DHCP servers include this option in the DHCPOFFER in order to allow the client + # to distinguish between lease offers. DHCP clients use the contents of the + # 'server identifier' field as the destination address for any DHCP messages + # unicast to the DHCP server + if conf.exists('server-identifier'): + subnet['server_identifier'] = conf.return_value('server-identifier') + + # SMTP server option specifies a list of SMTP servers available to the client. + # Servers should be listed in order of preference. + if conf.exists('smtp-server'): + subnet['smtp_server'] = conf.return_values('smtp-server') + + # For any subnet on which addresses will be assigned dynamically, there must be at + # least one range statement. The range statement gives the lowest and highest IP + # addresses in a range. All IP addresses in the range should be in the subnet in + # which the range statement is declared. + if conf.exists('range'): + for range in conf.list_nodes('range'): + range = { + 'start': conf.return_value('range {0} start'.format(range)), + 'stop': conf.return_value('range {0} stop'.format(range)) + } + subnet['range'].append(range) + + # IP address that needs to be excluded from DHCP lease range + if conf.exists('exclude'): + # We have no need to store the exclude addresses. Exclude addresses + # are recalculated into several ranges + exclude = [] + subnet['exclude'] = conf.return_values('exclude') + for addr in subnet['exclude']: + exclude.append(ipaddress.ip_address(addr)) + + # sort excluded IP addresses ascending + exclude = sorted(exclude) + + # calculate multipe ranges based on the excluded IP addresses + output = [] + for range in subnet['range']: + range_start = range['start'] + range_stop = range['stop'] + + for i in exclude: + # Excluded IP address must be in out specified range + if (i >= ipaddress.ip_address(range_start)) and (i <= ipaddress.ip_address(range_stop)): + # Build up new IP address range ending one IP address before + # our exclude address + range = { + 'start': str(range_start), + 'stop': str(i - 1) + } + # Our next IP address range will start one address after + # our exclude address + range_start = i + 1 + output.append(range) + + # Take care of last IP address range spanning from the last exclude + # address (+1) to the end of the initial configured range + if i is exclude[-1]: + last = { + 'start': str(i + 1), + 'stop': str(range_stop) + } + output.append(last) + else: + # IP address not inside search range, take range is it is + output.append(range) + + # We successfully build up a new list containing several IP address + # ranges, replace IP address range in our dictionary + subnet['range'] = output + + # Static DHCP leases + if conf.exists('static-mapping'): + for mapping in conf.list_nodes('static-mapping'): + conf.set_level('service dhcp-server shared-network-name {0} subnet {1} static-mapping {2}'.format(network, net, mapping)) + mapping = { + 'name': mapping, + 'disabled': False, + 'ip_address': '', + 'mac_address': '', + 'static_parameters': [] + } + + # This static lease is disabled + if conf.exists('disable'): + mapping['disabled'] = True + + # IP address used for this DHCP client + if conf.exists('ip-address'): + mapping['ip_address'] = conf.return_value('ip-address') + + # MAC address of requesting DHCP client + if conf.exists('mac-address'): + mapping['mac_address'] = conf.return_value('mac-address') + + # HACKS AND TRICKS + # + # check for 'raw' ISC DHCP parameters configured by users + # actually this is a bad idea in general to pass raw parameters + # from any user + # + # deprecate this and issue a warning like we do for DNS forwarding? + if conf.exists('static-mapping-parameters'): + mapping['static_parameters'] = conf.return_values('static-mapping-parameters') + + # append static-mapping configuration to subnet list + subnet['static_mapping'].append(mapping) + + # Reset config level to matching hirachy + conf.set_level('service dhcp-server shared-network-name {0} subnet {1}'.format(network, net)) + + # This option specifies a list of static routes that the client should install in its routing + # cache. If multiple routes to the same destination are specified, they are listed in descending + # order of priority. + if conf.exists('static-route destination-subnet'): + subnet['static_subnet'] = conf.return_value('static-route destination-subnet') + # Required for global config section + dhcp['static_route'] = True + + if conf.exists('static-route router'): + subnet['static_router'] = conf.return_value('static-route router') + + if subnet['static_router'] and subnet['static_subnet']: + # https://ercpe.de/blog/pushing-static-routes-with-isc-dhcp-server + # Option format is: + # <netmask>, <network-byte1>, <network-byte2>, <network-byte3>, <router-byte1>, <router-byte2>, <router-byte3> + # where bytes with the value 0 are omitted. + net = ipaddress.ip_network(subnet['static_subnet']) + # add netmask + string = str(net.prefixlen) + ',' + # add network bytes + bytes = str(net.network_address).split('.') + for b in bytes: + if b != '0': + string += b + ',' + + # add router bytes + bytes = subnet['static_router'].split('.') + for b in bytes: + if b != '0': + string += b + if b is not bytes[-1]: + string += ',' + + subnet['static_route'] = string + + # HACKS AND TRICKS + # + # check for 'raw' ISC DHCP parameters configured by users + # actually this is a bad idea in general to pass raw parameters + # from any user + # + # deprecate this and issue a warning like we do for DNS forwarding? + if conf.exists('subnet-parameters'): + config['subnet_parameters'] = conf.return_values('subnet-parameters') + + # This option is used to identify a TFTP server and, if supported by the client, should have + # the same effect as the server-name declaration. BOOTP clients are unlikely to support this + # option. Some DHCP clients will support it, and others actually require it. + if conf.exists('tftp-server-name'): + subnet['tftp_server'] = conf.return_value('tftp-server-name') + + # The time-offset option specifies the offset of the client’s subnet in seconds from + # Coordinated Universal Time (UTC). + if conf.exists('time-offset'): + subnet['time_offset'] = conf.return_value('time-offset') + + # The time-server option specifies a list of RFC 868 time servers available to the client. + # Servers should be listed in order of preference. + if conf.exists('time-server'): + subnet['time_server'] = conf.return_values('time-server') + + # The NetBIOS name server (NBNS) option specifies a list of RFC 1001/1002 NBNS name servers + # listed in order of preference. NetBIOS Name Service is currently more commonly referred to + # as WINS. WINS servers can be specified using the netbios-name-servers option. + if conf.exists('wins-server'): + subnet['wins_server'] = conf.return_values('wins-server') + + # URL for Web Proxy Autodiscovery Protocol + if conf.exists('wpad-url'): + subnet['wpad_url'] = conf.return_value('wpad-url') + # Required for global config section + dhcp['wpad'] = True + + # append subnet configuration to shared network subnet list + config['subnet'].append(subnet) + + # append shared network configuration to config dictionary + dhcp['shared_network'].append(config) + + return dhcp + +def verify(dhcp): + if (dhcp is None) or (dhcp['disabled'] is True): + return None + + # If DHCP is enabled we need one share-network + if len(dhcp['shared_network']) == 0: + raise ConfigError('No DHCP shared networks configured.\n' \ + 'At least one DHCP shared network must be configured.') + + # Inspect shared-network/subnet + failover_names = [] + listen_ok = False + subnets = [] + + # A shared-network requires a subnet definition + for network in dhcp['shared_network']: + if len(network['subnet']) == 0: + raise ConfigError('No DHCP lease subnets configured for {0}. At least one\n' \ + 'lease subnet must be configured for each shared network.'.format(network['name'])) + + for subnet in network['subnet']: + # Subnet static route declaration requires destination and router + if subnet['static_subnet'] or subnet['static_router']: + if not (subnet['static_subnet'] and subnet['static_router']): + raise ConfigError('Please specify missing DHCP static-route parameter(s):\n' \ + 'destination-subnet | router') + + # Failover requires all 4 parameters set + if subnet['failover_local_addr'] or subnet['failover_peer_addr'] or subnet['failover_name'] or subnet['failover_status']: + if not (subnet['failover_local_addr'] and subnet['failover_peer_addr'] and subnet['failover_name'] and subnet['failover_status']): + raise ConfigError('Please specify missing DHCP failover parameter(s):\n' \ + 'local-address | peer-address | name | status') + + # Failover names must be uniquie + if subnet['failover_name'] in failover_names: + raise ConfigError('Failover names must be unique:\n' \ + '{0} has already been configured!'.format(subnet['failover_name'])) + else: + failover_names.append(subnet['failover_name']) + + # Failover requires start/stop ranges for pool + if (len(subnet['range']) == 0): + raise ConfigError('At least one start-stop range must be configured for {0}\n' \ + 'to set up DHCP failover!'.format(subnet['network'])) + + # Check if DHCP address range is inside configured subnet declaration + range_start = [] + range_stop = [] + for range in subnet['range']: + start = range['start'] + stop = range['stop'] + # DHCP stop IP required after start IP + if start and not stop: + raise ConfigError('DHCP range stop address for start {0} is not defined!'.format(start)) + + # Start address must be inside network + if not ipaddress.ip_address(start) in ipaddress.ip_network(subnet['network']): + raise ConfigError('DHCP range start address {0} is not in subnet {1}\n' \ + 'specified for shared network {2}!'.format(start, subnet['network'], network['name'])) + + # Stop address must be inside network + if not ipaddress.ip_address(stop) in ipaddress.ip_network(subnet['network']): + raise ConfigError('DHCP range stop address {0} is not in subnet {1}\n' \ + 'specified for shared network {2}!'.format(stop, subnet['network'], network['name'])) + + # Stop address must be greater or equal to start address + if not ipaddress.ip_address(stop) >= ipaddress.ip_address(start): + raise ConfigError('DHCP range stop address {0} must be greater or equal\n' \ + 'to the range start address {1}!'.format(stop, start)) + + # Range start address must be unique + if start in range_start: + raise ConfigError('Conflicting DHCP lease range:\n' \ + 'Pool start address {0} defined multipe times!'.format(start)) + else: + range_start.append(start) + + # Range stop address must be unique + if stop in range_stop: + raise ConfigError('Conflicting DHCP lease range:\n' \ + 'Pool stop address {0} defined multipe times!'.format(stop)) + else: + range_stop.append(stop) + + # Exclude addresses must be in bound + for exclude in subnet['exclude']: + if not ipaddress.ip_address(exclude) in ipaddress.ip_network(subnet['network']): + raise ConfigError('Exclude IP address {0} is outside of the DHCP lease network {1}\n' \ + 'under shared network {2}!'.format(exclude, subnet['network'], network['name'])) + + # At least one DHCP address range or static-mapping required + active_mapping = False + if (len(subnet['range']) == 0): + for mapping in subnet['static_mapping']: + # we need at least one active mapping + if (not active_mapping) and (not mapping['disabled']): + active_mapping = True + else: + active_mapping = True + + if not active_mapping: + raise ConfigError('No DHCP address range or active static-mapping set\n' \ + 'for subnet {0}!'.format(subnet['network'])) + + # Static IP address mappings require both an IP address and MAC address + for mapping in subnet['static_mapping']: + # Static IP address must be configured + if not mapping['ip_address']: + raise ConfigError('DHCP static lease IP address not specified for static mapping\n' \ + '{0} under shared network name {1}!'.format(mapping['name'], network['name'])) + + # Static IP address must be in bound + if not ipaddress.ip_address(mapping['ip_address']) in ipaddress.ip_network(subnet['network']): + raise ConfigError('DHCP static lease IP address {0} for static mapping {1}\n' \ + 'in shared network {2} is outside DHCP lease subnet {3}!' \ + .format(mapping['ip_address'], mapping['name'], network['name'], subnet['network'])) + + # Static mapping requires MAC address + if not mapping['mac_address']: + raise ConfigError('DHCP static lease MAC address not specified for static mapping\n' \ + '{0} under shared network name {1}!'.format(mapping['name'], network['name'])) + + # There must be one subnet connected to a listen interface. + # This only counts if the network itself is not disabled! + if not network['disabled']: + if vyos.validate.is_subnet_connected(subnet['network'], primary=True): + listen_ok = True + + # Subnets must be non overlapping + if subnet['network'] in subnets: + raise ConfigError('DHCP subnets must be unique! Subnet {0} defined multiple times!'.format(subnet)) + else: + subnets.append(subnet['network']) + + # Check for overlapping subnets + net = ipaddress.ip_network(subnet['network']) + for n in subnets: + net2 = ipaddress.ip_network(n) + if (net != net2): + if net.overlaps(net2): + raise ConfigError('DHCP conflicting subnet ranges: {0} overlaps {1}'.format(net, net2)) + + if not listen_ok: + raise ConfigError('None of the DHCP lease subnets are inside any configured subnet on\n' \ + 'broadcast interfaces. At least one lease subnet must be set such that\n' \ + 'DHCP server listens on a one broadcast interface!') + + return None + +def generate(dhcp): + if dhcp is None: + return None + + if dhcp['disabled'] is True: + print('Warning: DHCP server will be deactivated because it is disabled') + return None + + tmpl = jinja2.Template(config_tmpl) + config_text = tmpl.render(dhcp) + with open(config_file, 'w') as f: + f.write(config_text) + + tmpl = jinja2.Template(daemon_tmpl) + config_text = tmpl.render(dhcp) + with open(daemon_config_file, 'w') as f: + f.write(config_text) + + return None + +def apply(dhcp): + if (dhcp is None) or dhcp['disabled']: + # DHCP server is removed in the commit + os.system('sudo systemctl stop isc-dhcp-server.service') + if os.path.exists(config_file): + os.unlink(config_file) + if os.path.exists(daemon_config_file): + os.unlink(daemon_config_file) + else: + # If our file holding DHCP leases does yet not exist - create it + if not os.path.exists(lease_file): + os.mknod(lease_file) + + os.system('sudo systemctl restart isc-dhcp-server.service') + + return None + +if __name__ == '__main__': + try: + c = get_config() + verify(c) + generate(c) + apply(c) + except ConfigError as e: + print(e) + sys.exit(1) diff --git a/src/conf_mode/dhcpv6_server.py b/src/conf_mode/dhcpv6_server.py new file mode 100755 index 000000000..bb3e6e90d --- /dev/null +++ b/src/conf_mode/dhcpv6_server.py @@ -0,0 +1,451 @@ +#!/usr/bin/env python3 +# +# Copyright (C) 2018 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 sys +import os +import ipaddress + +import jinja2 + +import vyos.validate + +from vyos.config import Config +from vyos import ConfigError + +config_file = r'/etc/dhcp/dhcpd6.conf' +lease_file = r'/config/dhcpd6.leases' +daemon_config_file = r'/etc/default/isc-dhcpv6-server' + +# Please be careful if you edit the template. +config_tmpl = """ +### Autogenerated by dhcpv6_server.py ### + +# For options please consult the following website: +# https://www.isc.org/wp-content/uploads/2017/08/dhcp43options.html + +log-facility local7; +{%- if preference %} +option dhcp6.preference {{ preference }}; +{%- endif %} + +# Shared network configration(s) +{% for network in shared_network %} +{%- if not network.disabled -%} +shared-network {{ network.name }} { + {%- for subnet in network.subnet %} + subnet6 {{ subnet.network }} { + {%- for range in subnet.range6_prefix %} + range6 {{ range.prefix }}{{ " temporary" if range.temporary }}; + {%- endfor %} + {%- for range in subnet.range6 %} + range6 {{ range.start }} {{ range.stop }}; + {%- endfor %} + {%- if subnet.domain_search %} + option dhcp6.domain-search {{ subnet.domain_search | join(', ') }}; + {%- endif %} + {%- if subnet.lease_def %} + default-lease-time {{ subnet.lease_def }}; + {%- endif %} + {%- if subnet.lease_max %} + max-lease-time {{ subnet.lease_max }}; + {%- endif %} + {%- if subnet.lease_min %} + min-lease-time {{ subnet.lease_min }}; + {%- endif %} + {%- if subnet.dns_server %} + option dhcp6.name-servers {{ subnet.dns_server | join(', ') }}; + {%- endif %} + {%- if subnet.nis_domain %} + option dhcp6.nis-domain-name "{{ subnet.nis_domain }}"; + {%- endif %} + {%- if subnet.nis_server %} + option dhcp6.nis-servers {{ subnet.nis_server | join(', ') }}; + {%- endif %} + {%- if subnet.nisp_domain %} + option dhcp6.nisp-domain-name "{{ subnet.nisp_domain }}"; + {%- endif %} + {%- if subnet.nisp_server %} + option dhcp6.nisp-servers {{ subnet.nisp_server | join(', ') }}; + {%- endif %} + {%- if subnet.sip_address %} + option dhcp6.sip-servers-addresses {{ subnet.sip_address | join(', ') }}; + {%- endif %} + {%- if subnet.sip_hostname %} + option dhcp6.sip-servers-names {{ subnet.sip_hostname | join(', ') }}; + {%- endif %} + {%- if subnet.sntp_server %} + option dhcp6.sntp-servers {{ subnet.sntp_server | join(', ') }}; + {%- endif %} + {%- for host in subnet.static_mapping %} + {% if not host.disabled -%} + host {{ network.name }}_{{ host.name }} { + host-identifier option dhcp6.client-id "{{ host.client_identifier }}"; + fixed-address6 {{ host.ipv6_address }}; + } + {%- endif %} + {%- endfor %} + } + {%- endfor %} +} +{%- endif %} +{% endfor %} + +""" + +daemon_tmpl = """ +### Autogenerated by dhcp_server.py ### + +# sourced by /etc/init.d/isc-dhcpv6-server + +DHCPD_CONF=/etc/dhcp/dhcpd6.conf +DHCPD_PID=/var/run/dhcpd6.pid +OPTIONS="-6 -lf {{ lease_file }}" +INTERFACES="" +""" + +default_config_data = { + 'lease_file': lease_file, + 'preference': '', + 'disabled': False, + 'shared_network': [] +} + +def get_config(): + dhcpv6 = default_config_data + conf = Config() + if not conf.exists('service dhcpv6-server'): + return None + else: + conf.set_level('service dhcpv6-server') + + # Check for global disable of DHCPv6 service + if conf.exists('disable'): + dhcpv6['disabled'] = True + return dhcpv6 + + # Preference of this DHCPv6 server compared with others + if conf.exists('preference'): + dhcpv6['preference'] = conf.return_value('preference') + + # check for multiple, shared networks served with DHCPv6 addresses + if conf.exists('shared-network-name'): + for network in conf.list_nodes('shared-network-name'): + conf.set_level('service dhcpv6-server shared-network-name {0}'.format(network)) + config = { + 'name': network, + 'disabled': False, + 'subnet': [] + } + + # If disabled, the shared-network configuration becomes inactive + if conf.exists('disable'): + config['disabled'] = True + + # check for multiple subnet configurations in a shared network + if conf.exists('subnet'): + for net in conf.list_nodes('subnet'): + conf.set_level('service dhcpv6-server shared-network-name {0} subnet {1}'.format(network, net)) + subnet = { + 'network': net, + 'range6_prefix': [], + 'range6': [], + 'default_router': '', + 'dns_server': [], + 'domain_name': '', + 'domain_search': [], + 'lease_def': '', + 'lease_min': '', + 'lease_max': '', + 'nis_domain': '', + 'nis_server': [], + 'nisp_domain': '', + 'nisp_server': [], + 'sip_address': [], + 'sip_hostname': [], + 'sntp_server': [], + 'static_mapping': [] + } + + # For any subnet on which addresses will be assigned dynamically, there must be at + # least one address range statement. The range statement gives the lowest and highest + # IP addresses in a range. All IP addresses in the range should be in the subnet in + # which the range statement is declared. + if conf.exists('address-range prefix'): + for prefix in conf.list_nodes('address-range prefix'): + range = { + 'prefix': prefix, + 'temporary': False + } + + # Address range will be used for temporary addresses + if conf.exists('address-range prefix {0} temporary'.format(range['prefix'])): + range['temporary'] = True + + # Append to subnet temporary range6 list + subnet['range6_prefix'].append(range) + + if conf.exists('address-range start'): + for range in conf.list_nodes('address-range start'): + range = { + 'start': range, + 'stop': conf.return_value('address-range start {0} stop'.format(range)) + } + + # Append to subnet range6 list + subnet['range6'].append(range) + + # The domain-search option specifies a 'search list' of Domain Names to be used + # by the client to locate not-fully-qualified domain names. + if conf.exists('domain-search'): + for domain in conf.return_values('domain-search'): + subnet['domain_search'].append('"' + domain + '"') + + # IPv6 address valid lifetime + # (at the end the address is no longer usable by the client) + # (set to 30 days, the usual IPv6 default) + if conf.exists('lease-time default'): + subnet['lease_def'] = conf.return_value('lease-time default') + + # Time should be the maximum length in seconds that will be assigned to a lease. + # The only exception to this is that Dynamic BOOTP lease lengths, which are not + # specified by the client, are not limited by this maximum. + if conf.exists('lease-time maximum'): + subnet['lease_max'] = conf.return_value('lease-time maximum') + + # Time should be the minimum length in seconds that will be assigned to a lease + if conf.exists('lease-time minimum'): + subnet['lease_min'] = conf.return_value('lease-time minimum') + + # Specifies a list of Domain Name System name servers available to the client. + # Servers should be listed in order of preference. + if conf.exists('name-server'): + subnet['dns_server'] = conf.return_values('name-server') + + # Ancient NIS (Network Information Service) domain name + if conf.exists('nis-domain'): + subnet['nis_domain'] = conf.return_value('nis-domain') + + # Ancient NIS (Network Information Service) servers + if conf.exists('nis-server'): + subnet['nis_server'] = conf.return_values('nis-server') + + # Ancient NIS+ (Network Information Service) domain name + if conf.exists('nisplus-domain'): + subnet['nisp_domain'] = conf.return_value('nisplus-domain') + + # Ancient NIS+ (Network Information Service) servers + if conf.exists('nisplus-server'): + subnet['nisp_server'] = conf.return_values('nisplus-server') + + # Prefix Delegation (RFC 3633) + if conf.exists('prefix-delegation'): + print('TODO: This option is actually not implemented right now!') + + # Local SIP server that is to be used for all outbound SIP requests - IPv6 address + if conf.exists('sip-server-address'): + subnet['sip_address'] = conf.return_values('sip-server-address') + + # Local SIP server that is to be used for all outbound SIP requests - hostname + if conf.exists('sip-server-name'): + for hostname in conf.return_values('sip-server-name'): + subnet['sip_hostname'].append('"' + hostname + '"') + + # List of local SNTP servers available for the client to synchronize their clocks + if conf.exists('sntp-server'): + subnet['sntp_server'] = conf.return_values('sntp-server') + + # + # Static DHCP v6 leases + # + if conf.exists('static-mapping'): + for mapping in conf.list_nodes('static-mapping'): + conf.set_level('service dhcpv6-server shared-network-name {0} subnet {1} static-mapping {2}'.format(network, net, mapping)) + mapping = { + 'name': mapping, + 'disabled': False, + 'ipv6_address': '', + 'client_identifier': '', + } + + # This static lease is disabled + if conf.exists('disable'): + mapping['disabled'] = True + + # IPv6 address used for this DHCP client + if conf.exists('ipv6-address'): + mapping['ipv6_address'] = conf.return_value('ipv6-address') + + # This option specifies the client’s DUID identifier. DUIDs are similar but different from DHCPv4 client identifiers + if conf.exists('identifier'): + mapping['client_identifier'] = conf.return_value('identifier') + + # append static mapping configuration tu subnet list + subnet['static_mapping'].append(mapping) + + # append subnet configuration to shared network subnet list + config['subnet'].append(subnet) + + + # append shared network configuration to config dictionary + dhcpv6['shared_network'].append(config) + + return dhcpv6 + +def verify(dhcpv6): + if dhcpv6 is None: + return None + + if dhcpv6['disabled']: + return None + + # If DHCP is enabled we need one share-network + if len(dhcpv6['shared_network']) == 0: + raise ConfigError('No DHCPv6 shared networks configured.\n' \ + 'At least one DHCPv6 shared network must be configured.') + + # Inspect shared-network/subnet + subnets = [] + listen_ok = False + + for network in dhcpv6['shared_network']: + # A shared-network requires a subnet definition + if len(network['subnet']) == 0: + raise ConfigError('No DHCPv6 lease subnets configured for {0}. At least one\n' \ + 'lease subnet must be configured for each shared network.'.format(network['name'])) + + range6_start = [] + range6_stop = [] + for subnet in network['subnet']: + # Ususal range declaration with a start and stop address + for range6 in subnet['range6']: + # shorten names + start = range6['start'] + stop = range6['stop'] + + # DHCPv6 stop address is required + if start and not stop: + raise ConfigError('DHCPv6 range stop address for start {0} is not defined!'.format(start)) + + # Start address must be inside network + if not ipaddress.ip_address(start) in ipaddress.ip_network(subnet['network']): + raise ConfigError('DHCPv6 range start address {0} is not in subnet {1}\n' \ + 'specified for shared network {2}!'.format(start, subnet['network'], network['name'])) + + # Stop address must be inside network + if not ipaddress.ip_address(stop) in ipaddress.ip_network(subnet['network']): + raise ConfigError('DHCPv6 range stop address {0} is not in subnet {1}\n' \ + 'specified for shared network {2}!'.format(stop, subnet['network'], network['name'])) + + # Stop address must be greater or equal to start address + if not ipaddress.ip_address(stop) >= ipaddress.ip_address(start): + raise ConfigError('DHCPv6 range stop address {0} must be greater or equal\n' \ + 'to the range start address {1}!'.format(stop, start)) + + # DHCPv6 range start address must be unique - two ranges can't + # start with the same address - makes no sense + if start in range6_start: + raise ConfigError('Conflicting DHCPv6 lease range:\n' \ + 'Pool start address {0} defined multipe times!'.format(start)) + else: + range6_start.append(start) + + # DHCPv6 range stop address must be unique - two ranges can't + # end with the same address - makes no sense + if stop in range6_stop: + raise ConfigError('Conflicting DHCPv6 lease range:\n' \ + 'Pool stop address {0} defined multipe times!'.format(stop)) + else: + range6_stop.append(stop) + + # We also have prefixes that require checking + for prefix in subnet['range6_prefix']: + # If configured prefix does not match our subnet, we have to check that it's inside + if ipaddress.ip_network(prefix['prefix']) != ipaddress.ip_network(subnet['network']): + # Configured prefixes must be inside our network + if not ipaddress.ip_network(prefix['prefix']) in ipaddress.ip_network(subnet['network']): + raise ConfigError('DHCPv6 prefix {0} is not in subnet {1}\n' \ + 'specified for shared network {2}!'.format(prefix['prefix'], subnet['network'], network['name'])) + + # DHCPv6 requires at least one configured address range or one static mapping + if not network['disabled']: + if vyos.validate.is_subnet_connected(subnet['network']): + listen_ok = True + + # DHCPv6 subnet must not overlap. ISC DHCP also complains about overlapping + # subnets: "Warning: subnet 2001:db8::/32 overlaps subnet 2001:db8:1::/32" + net = ipaddress.ip_network(subnet['network']) + for n in subnets: + net2 = ipaddress.ip_network(n) + if (net != net2): + if net.overlaps(net2): + raise ConfigError('DHCPv6 conflicting subnet ranges: {0} overlaps {1}'.format(net, net2)) + + if not listen_ok: + raise ConfigError('None of the DHCPv6 subnets are connected to a subnet6 on\n' \ + 'this machine. At least one subnet6 must be connected such that\n' \ + 'DHCPv6 listens on an interface!') + + + return None + +def generate(dhcpv6): + if dhcpv6 is None: + return None + + if dhcpv6['disabled']: + print('Warning: DHCPv6 server will be deactivated because it is disabled') + return None + + tmpl = jinja2.Template(config_tmpl) + config_text = tmpl.render(dhcpv6) + with open(config_file, 'w') as f: + f.write(config_text) + + tmpl = jinja2.Template(daemon_tmpl) + config_text = tmpl.render(dhcpv6) + with open(daemon_config_file, 'w') as f: + f.write(config_text) + + return None + +def apply(dhcpv6): + if (dhcpv6 is None) or dhcpv6['disabled']: + # DHCP server is removed in the commit + os.system('sudo systemctl stop isc-dhcpv6-server.service') + if os.path.exists(config_file): + os.unlink(config_file) + if os.path.exists(daemon_config_file): + os.unlink(daemon_config_file) + else: + # If our file holding DHCPv6 leases does yet not exist - create it + if not os.path.exists(lease_file): + os.mknod(lease_file) + + os.system('sudo systemctl restart isc-dhcpv6-server.service') + + return None + +if __name__ == '__main__': + try: + c = get_config() + verify(c) + generate(c) + apply(c) + except ConfigError as e: + print(e) + sys.exit(1) diff --git a/src/conf_mode/mdns_repeater.py b/src/conf_mode/mdns_repeater.py index 474a6a5cf..cef735c0d 100755 --- a/src/conf_mode/mdns_repeater.py +++ b/src/conf_mode/mdns_repeater.py @@ -18,7 +18,7 @@ import sys import os - +import jinja2 import netifaces from vyos.config import Config @@ -26,60 +26,78 @@ from vyos import ConfigError config_file = r'/etc/default/mdns-repeater' -def get_config(): - interface_list = [] +config_tmpl = """ +### Autogenerated by mdns_repeater.py ### +DAEMON_ARGS="{{ interfaces | join(' ') }}" +""" + +default_config_data = { + 'disabled': False, + 'interfaces': [] +} +def get_config(): + mdns = default_config_data conf = Config() - conf.set_level('service mdns repeater') - if not conf.exists(''): - return interface_list + if not conf.exists('service mdns repeater'): + return None + else: + conf.set_level('service mdns repeater') - if conf.exists('interface'): - intfs_names = [] - intfs_names = conf.return_values('interface') + # Service can be disabled by user + if conf.exists('disable'): + mdns['disabled'] = True + return mdns - for name in intfs_names: - interface_list.append(name) + # Interface to repeat mDNS advertisements + if conf.exists('interface'): + mdns['interfaces'] = conf.return_values('interface') - return interface_list + return mdns def verify(mdns): - # '0' interfaces are possible, think of service deletion. Only '1' is not supported! - if len(mdns) == 1: - raise ConfigError('At least 2 interfaces must be specified but %d given!' % len(mdns)) - - # For mdns-repeater to work it is essential that the interfaces - # have an IP address assigned - for intf in mdns: - try: - netifaces.ifaddresses(intf)[netifaces.AF_INET] - except KeyError as e: - raise ConfigError('No IP address configured for interface "%s"!' % intf) + if mdns is None: + return None + + if mdns['disabled']: + return None + + # We need at least two interfaces to repeat mDNS advertisments + if len(mdns['interfaces']) < 2: + raise ConfigError('mDNS repeater requires at least 2 configured interfaces!') + + # For mdns-repeater to work it is essential that the interfaces has + # an IPv4 address assigned + for interface in mdns['interfaces']: + if netifaces.AF_INET in netifaces.ifaddresses(interface).keys(): + if len(netifaces.ifaddresses(interface)[netifaces.AF_INET]) < 1: + raise ConfigError('mDNS repeater requires an IPv6 address configured on interface %s!'.format(interface)) return None def generate(mdns): - config_header = '### Autogenerated by mdns_repeater.py ###\n' - if len(mdns) > 0: - config_args = 'DAEMON_ARGS="' + ' '.join(str(e) for e in mdns) + '"\n' - else: - config_args = 'DAEMON_ARGS=""\n' + if mdns is None: + return None + + if mdns['disabled']: + print('Warning: mDNS repeater will be deactivated because it is disabled') + return None - # write new configuration file - f = open(config_file, 'w') - f.write(config_header) - f.write(config_args) - f.close() + tmpl = jinja2.Template(config_tmpl) + config_text = tmpl.render(mdns) + with open(config_file, 'w') as f: + f.write(config_text) return None def apply(mdns): - if len(mdns) == 0: - cmd = "sudo systemctl stop mdns-repeater" + if (mdns is None) or mdns['disabled']: + os.system('sudo systemctl stop mdns-repeater') + if os.path.exists(config_file): + os.unlink(config_file) else: - cmd = "sudo systemctl restart mdns-repeater" + os.system('sudo systemctl restart mdns-repeater') - os.system(cmd) return None if __name__ == '__main__': diff --git a/src/conf_mode/ntp.py b/src/conf_mode/ntp.py index 2a6088575..0abb2746a 100755 --- a/src/conf_mode/ntp.py +++ b/src/conf_mode/ntp.py @@ -36,7 +36,7 @@ config_tmpl = """ # driftfile /var/lib/ntp/ntp.drift # By default, only allow ntpd to query time sources, ignore any incoming requests -restrict default ignore +restrict default noquery nopeer notrap nomodify # Local users have unrestricted access, allowing reconfiguration via ntpdc restrict 127.0.0.1 restrict -6 ::1 @@ -154,10 +154,10 @@ def generate(ntp): def apply(ntp): if ntp is not None: - os.system('sudo /usr/sbin/invoke-rc.d ntp force-reload') + os.system('sudo systemctl restart ntp.service') else: - # NTP suuport is removed in the commit - os.system('sudo /usr/sbin/invoke-rc.d ntp stop') + # NTP support is removed in the commit + os.system('sudo systemctl stop ntp.service') os.unlink(config_file) return None diff --git a/src/conf_mode/snmp.py b/src/conf_mode/snmp.py index 3b47ffc98..69952e5e2 100755 --- a/src/conf_mode/snmp.py +++ b/src/conf_mode/snmp.py @@ -21,15 +21,14 @@ import os import shutil import stat import pwd -import time import jinja2 -import ipaddress import random import binascii import re import vyos.version +import vyos.validate from vyos.config import Config from vyos import ConfigError @@ -38,6 +37,7 @@ config_file_client = r'/etc/snmp/snmp.conf' config_file_daemon = r'/etc/snmp/snmpd.conf' config_file_access = r'/usr/share/snmp/snmpd.conf' config_file_user = r'/var/lib/snmp/snmpd.conf' +config_file_init = r'/etc/default/snmpd' # SNMP OIDs used to mark auth/priv type OIDs = { @@ -59,11 +59,10 @@ clientaddr {{ trap_source }} # SNMPS template - be careful if you edit the template. access_config_tmpl = """ ### Autogenerated by snmp.py ### -{% if v3_users %} -{% for u in v3_users %} +{%- for u in v3_users %} {{ u.mode }}user {{ u.name }} -{% endfor %} -{% endif -%} +{%- endfor %} + rwuser {{ vyos_user }} """ @@ -72,20 +71,20 @@ rwuser {{ vyos_user }} user_config_tmpl = """ ### Autogenerated by snmp.py ### # user -{% if v3_users %} -{% for u in v3_users %} -{% if u.authOID == 'none' %} +{%- for u in v3_users %} +{%- if u.authOID == 'none' %} createUser {{ u.name }} -{% elif u.authPassword %} +{%- elif u.authPassword %} createUser {{ u.name }} {{ u.authProtocol | upper }} "{{ u.authPassword }}" {{ u.privProtocol | upper }} {{ u.privPassword }} -{% else %} +{%- else %} usmUser 1 3 {{ u.engineID }} "{{ u.name }}" "{{ u.name }}" NULL {{ u.authOID }} {{ u.authMasterKey }} {{ u.privOID }} {{ u.privMasterKey }} 0x -{% endif %} -{% endfor %} -{% endif %} +{%- endif %} +{%- endfor %} createUser {{ vyos_user }} MD5 "{{ vyos_user_pass }}" DES +{%- if v3_engineid %} oldEngineID {{ v3_engineid }} +{%- endif %} """ # SNMPS template - be careful if you edit the template. @@ -122,110 +121,108 @@ monitor -r 10 -e linkDownTrap "Generate linkDown" ifOperStatus == 2 ######################## # configurable section # ######################## - {% if v3_tsm_key %} [snmp] localCert {{ v3_tsm_key }} -{% endif %} +{%- endif %} # Default system description is VyOS version sysDescr VyOS {{ version }} -{% if description -%} +{% if description %} # Description SysDescr {{ description }} -{% endif %} +{%- endif %} # Listen agentaddress unix:/run/snmpd.socket{% if listen_on %}{% for li in listen_on %},{{ li }}{% endfor %}{% else %},udp:161,udp6:161{% endif %}{% if v3_tsm_key %},tlstcp:{{ v3_tsm_port }},dtlsudp::{{ v3_tsm_port }}{% endif %} # SNMP communities -{% if communities -%} -{% for c in communities %} -{% if c.network -%} -{% for network in c.network %} +{%- for c in communities %} +{%- if c.network_v4 %} +{%- for network in c.network_v4 %} {{ c.authorization }}community {{ c.name }} {{ network }} -{{ c.authorization }}community6 {{ c.name }} {{ network }} -{% endfor %} -{% else %} +{%- endfor %} +{%- else %} {{ c.authorization }}community {{ c.name }} +{%- endif %} +{%- if c.network_v6 %} +{%- for network in c.network_v6 %} +{{ c.authorization }}community6 {{ c.name }} {{ network }} +{%- endfor %} +{%- else %} {{ c.authorization }}community6 {{ c.name }} -{% endif %} -{% endfor %} -{% endif %} +{%- endif %} +{%- endfor %} -{% if contact -%} +{% if contact %} # system contact information SysContact {{ contact }} -{% endif %} +{%- endif %} -{% if location -%} +{% if location %} # system location information SysLocation {{ location }} -{% endif %} +{%- endif %} {% if smux_peers -%} # additional smux peers -{% for sp in smux_peers %} +{%- for sp in smux_peers %} smuxpeer {{ sp }} -{% endfor %} -{% endif %} +{%- endfor %} +{%- endif %} {% if trap_targets -%} # if there is a problem - tell someone! -{% for t in trap_targets %} +{%- for t in trap_targets %} trap2sink {{ t.target }}{% if t.port -%}:{{ t.port }}{% endif %} {{ t.community }} -{% endfor %} -{% endif %} +{%- endfor %} +{%- endif %} +{%- if v3_enabled %} # # SNMPv3 stuff goes here # -{% if v3_enabled %} - # views -{% if v3_views -%} -{% for v in v3_views %} -{% for oid in v.oids %} +{%- for v in v3_views %} +{%- for oid in v.oids %} view {{ v.name }} included .{{ oid.oid }} -{% endfor %} -{% endfor %} -{% endif %} +{%- endfor %} +{%- endfor %} # access # context sec.model sec.level match read write notif -{% if v3_groups -%} -{% for g in v3_groups %} -{% if g.mode == 'ro' %} -access {{ g.name }} "" usm {{ g.seclevel }} exact {{ g.view }} none none -access {{ g.name }} "" tsm {{ g.seclevel }} exact {{ g.view }} none none -{% elif g.mode == 'rw' %} -access {{ g.name }} "" usm {{ g.seclevel }} exact {{ g.view }} {{ g.view }} none -access {{ g.name }} "" tsm {{ g.seclevel }} exact {{ g.view }} {{ g.view }} none -{% endif %} -{% endfor -%} -{% endif %} +{%- for g in v3_groups %} +access {{ g.name }} "" usm {{ g.seclevel }} exact {{ g.view }} {% if g.mode == 'ro' %}none{% else %}{{ g.view }}{% endif %} none +access {{ g.name }} "" tsm {{ g.seclevel }} exact {{ g.view }} {% if g.mode == 'ro' %}none{% else %}{{ g.view }}{% endif %} none +{%- endfor %} # trap-target -{% if v3_traps -%} -{% for t in v3_traps %} +{%- for t in v3_traps %} trapsess -v 3 {{ '-Ci' if t.type == 'inform' }} -e {{ t.engineID }} -u {{ t.secName }} -l {{ t.secLevel }} -a {{ t.authProtocol }} {% if t.authPassword %}-A {{ t.authPassword }}{% elif t.authMasterKey %}-3m {{ t.authMasterKey }}{% endif %} -x {{ t.privProtocol }} {% if t.privPassword %}-X {{ t.privPassword }}{% elif t.privMasterKey %}-3M {{ t.privMasterKey }}{% endif %} {{ t.ipProto }}:{{ t.ipAddr }}:{{ t.ipPort }} -{% endfor -%} -{% endif %} +{%- endfor %} # group -{% if v3_users -%} -{% for u in v3_users %} +{%- for u in v3_users %} group {{ u.group }} usm {{ u.name }} group {{ u.group }} tsm {{ u.name }} {% endfor %} -{% endif %} +{%- endif %} +""" -{% endif %} +init_config_tmpl = """ +### Autogenerated by snmp.py ### +# This file controls the activity of snmpd + +# snmpd control (yes means start daemon). +SNMPDRUN=yes +# snmpd options (use syslog, close stdin/out/err). +SNMPDOPTS='-LSed -u snmp -g snmp -p /run/snmpd.pid' """ default_config_data = { 'listen_on': [], + 'listen_address': [], 'communities': [], 'smux_peers': [], 'location' : '', @@ -271,14 +268,28 @@ def get_config(): community = { 'name': name, 'authorization': 'ro', - 'network': [] + 'network_v4': [], + 'network_v6': [] } if conf.exists('community {0} authorization'.format(name)): community['authorization'] = conf.return_value('community {0} authorization'.format(name)) + # Subnet of SNMP client(s) allowed to contact system if conf.exists('community {0} network'.format(name)): - community['network'] = conf.return_values('community {0} network'.format(name)) + for addr in conf.return_values('community {0} network'.format(name)): + if vyos.validate.is_ipv4(addr): + community['network_v4'].append(addr) + else: + community['network_v6'].append(addr) + + # IP address of SNMP client allowed to contact system + if conf.exists('community {0} client'.format(name)): + for addr in conf.return_values('community {0} client'.format(name)): + if vyos.validate.is_ipv4(addr): + community['network_v4'].append(addr) + else: + community['network_v6'].append(addr) snmp['communities'].append(community) @@ -290,21 +301,20 @@ def get_config(): if conf.exists('listen-address'): for addr in conf.list_nodes('listen-address'): - listen = '' port = '161' if conf.exists('listen-address {0} port'.format(addr)): port = conf.return_value('listen-address {0} port'.format(addr)) - if ipaddress.ip_address(addr).version == 4: - # udp:127.0.0.1:161 - listen = 'udp:' + addr + ':' + port - elif ipaddress.ip_address(addr).version == 6: - # udp6:[::1]:161 - listen = 'udp6:' + '[' + addr + ']' + ':' + port - else: - raise ConfigError('Invalid IP address version') + snmp['listen_address'].append((addr, port)) - snmp['listen_on'].append(listen) + # Always listen on localhost if an explicit address has been configured + # This is a safety measure to not end up with invalid listen addresses + # that are not configured on this system. See https://phabricator.vyos.net/T850 + if not '127.0.0.1' in conf.list_nodes('listen-address'): + snmp['listen_address'].append(('127.0.0.1', '161')) + + if not '::1' in conf.list_nodes('listen-address'): + snmp['listen_address'].append(('::1', '161')) if conf.exists('location'): snmp['location'] = conf.return_value('location') @@ -579,6 +589,24 @@ def verify(snmp): if not os.path.isfile('/config/snmp/tls/certs/' + snmp['v3_tsm_key']): raise ConfigError('TSM key must be fingerprint or filename in "/config/snmp/tls/certs/" folder') + for listen in snmp['listen_address']: + addr = listen[0] + port = listen[1] + + if vyos.validate.is_ipv4(addr): + # example: udp:127.0.0.1:161 + listen = 'udp:' + addr + ':' + port + else: + # example: udp6:[::1]:161 + listen = 'udp6:' + '[' + addr + ']' + ':' + port + + # We only wan't to configure addresses that exist on the system. + # Hint the user if they don't exist + if vyos.validate.is_addr_assigned(addr): + snmp['listen_on'].append(listen) + else: + print('WARNING: SNMP listen address {0} not configured!'.format(addr)) + if 'v3_groups' in snmp.keys(): for group in snmp['v3_groups']: # @@ -705,29 +733,35 @@ def generate(snmp): return None # Write client config file - tmpl = jinja2.Template(client_config_tmpl, trim_blocks=True) + tmpl = jinja2.Template(client_config_tmpl) config_text = tmpl.render(snmp) with open(config_file_client, 'w') as f: f.write(config_text) # Write server config file - tmpl = jinja2.Template(daemon_config_tmpl, trim_blocks=True) + tmpl = jinja2.Template(daemon_config_tmpl) config_text = tmpl.render(snmp) with open(config_file_daemon, 'w') as f: f.write(config_text) # Write access rights config file - tmpl = jinja2.Template(access_config_tmpl, trim_blocks=True) + tmpl = jinja2.Template(access_config_tmpl) config_text = tmpl.render(snmp) with open(config_file_access, 'w') as f: f.write(config_text) # Write access rights config file - tmpl = jinja2.Template(user_config_tmpl, trim_blocks=True) + tmpl = jinja2.Template(user_config_tmpl) config_text = tmpl.render(snmp) with open(config_file_user, 'w') as f: f.write(config_text) + # Write init config file + tmpl = jinja2.Template(init_config_tmpl) + config_text = tmpl.render(snmp) + with open(config_file_init, 'w') as f: + f.write(config_text) + return None def apply(snmp): @@ -761,9 +795,17 @@ def apply(snmp): # start SNMP daemon os.system("sudo systemctl restart snmpd.service") - # the passwords are not available immediately so this is a workaround - # and should be changed to polling - time.sleep(2) + # Passwords are not available immediately in the configuration file, + # after daemon startup - we wait until they have been processed by + # snmpd, which we see when a magic line appears in this file. + snmpReady = False + while not snmpReady: + with open(config_file_user, 'r') as f: + for line in f: + # Search for our magic string inside the file + if '**** DO NOT EDIT THIS FILE ****' in line: + snmpReady = True + break # Back in the Perl days the configuration was re-read and any # plaintext password inside the configuration was replaced by diff --git a/src/conf_mode/ssh.py b/src/conf_mode/ssh.py index f1ac19473..beca7bb9a 100755 --- a/src/conf_mode/ssh.py +++ b/src/conf_mode/ssh.py @@ -236,10 +236,10 @@ def generate(ssh): def apply(ssh): if ssh is not None and 'port' in ssh.keys(): - os.system("sudo systemctl restart ssh") + os.system("sudo systemctl restart ssh.service") else: # SSH access is removed in the commit - os.system("sudo systemctl stop ssh") + os.system("sudo systemctl stop ssh.service") os.unlink(config_file) return None diff --git a/src/conf_mode/syslog.py b/src/conf_mode/syslog.py index 5dfc6f390..f652cf3d0 100755 --- a/src/conf_mode/syslog.py +++ b/src/conf_mode/syslog.py @@ -93,7 +93,7 @@ def get_config(): config_data['files'].update( { 'global' : { - 'log-file' : '/var/log/vyos-rsyslog', + 'log-file' : '/var/log/messages', 'max-size' : 262144, 'action-on-max-size' : '/usr/sbin/logrotate /etc/logrotate.d/vyos-rsyslog', 'selectors' : '*.notice;local7.debug', @@ -229,6 +229,18 @@ def generate(c): f.write(config_text) def verify(c): + # + # /etc/rsyslog.conf is generated somewhere and copied over the original (exists in /opt/vyatta/etc/rsyslog.conf) + # it interferes with the global logging, to make sure we are using a single base, template is enforced here + # + + if not os.path.islink('/etc/rsyslog.conf'): + os.remove('/etc/rsyslog.conf') + os.symlink('/usr/share/vyos/templates/rsyslog/rsyslog.conf', '/etc/rsyslog.conf') + + # /var/log/vyos-rsyslog were the old files, we may want to clean those up, but currently there + # is a chance that someone still needs it, so I don't automatically remove them + if c == None: return None diff --git a/src/conf_mode/tftp_server.py b/src/conf_mode/tftp_server.py new file mode 100755 index 000000000..0984b4545 --- /dev/null +++ b/src/conf_mode/tftp_server.py @@ -0,0 +1,155 @@ +#!/usr/bin/env python3 +# +# Copyright (C) 2018 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 sys +import os +import stat +import pwd + +import jinja2 +import vyos.validate + +from vyos.config import Config +from vyos import ConfigError + +config_file = r'/etc/default/tftpd-hpa' + +# Please be careful if you edit the template. +config_tmpl = """ +### Autogenerated by tftp_server.py ### + +# See manual at https://linux.die.net/man/8/tftpd + +TFTP_USERNAME="tftp" +TFTP_DIRECTORY="{{ directory }}" +{% if listen_ipv4 and listen_ipv6 -%} +TFTP_ADDRESS="{% for a in listen_ipv4 -%}{{ a }}:{{ port }}{{- " --address " if not loop.last -}}{% endfor -%} {% for a in listen_ipv6 %} --address [{{ a }}]:{{ port }}{% endfor -%}" +{% elif listen_ipv4 -%} +TFTP_ADDRESS="{% for a in listen_ipv4 -%}{{ a }}:{{ port }}{{- " --address " if not loop.last -}}{% endfor %} -4" +{% elif listen_ipv6 -%} +TFTP_ADDRESS="{% for a in listen_ipv6 -%}[{{ a }}]:{{ port }}{{- " --address " if not loop.last -}}{% endfor %} -6" +{%- endif %} + +TFTP_OPTIONS="--secure {% if allow_upload %}--create --umask 000{% endif %}" + +""" + +default_config_data = { + 'directory': '', + 'allow_upload': False, + 'port': '69', + 'listen_ipv4': [], + 'listen_ipv6': [] +} + +def get_config(): + tftpd = default_config_data + conf = Config() + if not conf.exists('service tftp-server'): + return None + else: + conf.set_level('service tftp-server') + + if conf.exists('directory'): + tftpd['directory'] = conf.return_value('directory') + + if conf.exists('allow-upload'): + tftpd['allow_upload'] = True + + if conf.exists('port'): + tftpd['port'] = conf.return_value('port') + + if conf.exists('listen-address'): + for addr in conf.return_values('listen-address'): + if vyos.validate.is_ipv4(addr): + tftpd['listen_ipv4'].append(addr) + else: + tftpd['listen_ipv6'].append(addr) + + return tftpd + +def verify(tftpd): + # bail out early - looks like removal from running config + if tftpd is None: + return None + + # Configuring allowed clients without a server makes no sense + if not tftpd['directory']: + raise ConfigError('TFTP root directory must be configured!') + + if not (tftpd['listen_ipv4'] or tftpd['listen_ipv6']): + raise ConfigError('TFTP server listen address must be configured!') + + for addr in tftpd['listen_ipv4']: + # we always bind to localhost + if '127.0.0.1' not in tftpd['listen_ipv4']: + tftpd['listen_ipv4'].append('127.0.0.1') + + if not vyos.validate.is_addr_assigned(addr): + print('WARNING: TFTP server listen address {0} not configured!'.format(addr)) + + for addr in tftpd['listen_ipv6']: + # we always bind to localhost + if '::1' not in tftpd['listen_ipv6']: + tftpd['listen_ipv6'].append('::1') + + if not vyos.validate.is_addr_assigned(addr): + print('WARNING: TFTP server listen address {0} not configured!'.format(addr)) + + return None + +def generate(tftpd): + # bail out early - looks like removal from running config + if tftpd is None: + return None + + tmpl = jinja2.Template(config_tmpl) + config_text = tmpl.render(tftpd) + with open(config_file, 'w') as f: + f.write(config_text) + + return None + +def apply(tftpd): + if tftpd is not None: + + tftp_root = tftpd['directory'] + if not os.path.exists(tftp_root): + os.makedirs(tftp_root) + os.chmod(tftp_root, stat.S_IRUSR|stat.S_IWUSR|stat.S_IXUSR|stat.S_IRGRP|stat.S_IXGRP|stat.S_IROTH|stat.S_IXOTH) + # get UNIX uid for user 'tftp' + tftp_uid = pwd.getpwnam('tftp').pw_uid + os.chown(tftp_root, tftp_uid, -1) + + os.system('sudo systemctl restart tftpd-hpa.service') + else: + # TFTP server support is removed in the commit + os.system('sudo systemctl stop tftpd-hpa.service') + os.unlink(config_file) + + return None + +if __name__ == '__main__': + try: + c = get_config() + verify(c) + generate(c) + apply(c) + except ConfigError as e: + print(e) + sys.exit(1) diff --git a/src/conf_mode/vrrp.py b/src/conf_mode/vrrp.py index d21e3ef40..0480a886a 100755 --- a/src/conf_mode/vrrp.py +++ b/src/conf_mode/vrrp.py @@ -183,7 +183,7 @@ def get_config(): if not group["priority"]: group["priority"] = 100 if not group["preempt_delay"]: - group["preempt_delay"] = 5 * 60 + group["preempt_delay"] = 0 if not group["health_check_interval"]: group["health_check_interval"] = 60 if not group["health_check_count"]: @@ -273,7 +273,7 @@ def verify(data): count = len(_groups) - 1 index = 0 while (index < count): - if _groups[index]["vrid"] == _groups[index + 1]["vrid"]: + if (_groups[index]["vrid"] == _groups[index + 1]["vrid"]) and (_groups[index]["interface"] == _groups[index + 1]["interface"]): raise ConfigError("VRID {0} is used in groups {1} and {2} that both use interface {3}. Groups on the same interface must use different VRIDs".format( _groups[index]["vrid"], _groups[index]["name"], _groups[index + 1]["name"], _groups[index]["interface"])) else: diff --git a/src/conf_mode/wireguard.py b/src/conf_mode/wireguard.py index a4f876397..c6440ad81 100755 --- a/src/conf_mode/wireguard.py +++ b/src/conf_mode/wireguard.py @@ -26,101 +26,101 @@ from vyos.config import Config from vyos import ConfigError dir = r'/config/auth/wireguard' -pk = dir + '/private.key' +pk = dir + '/private.key' pub = dir + '/public.key' +psk_file = r'/tmp/psk' -### check_kmod may be removed in the future, -### just want to have everything smoothly running after reboot def check_kmod(): if not os.path.exists('/sys/module/wireguard'): - sl.syslog(sl.LOG_NOTICE, "loading wirguard kmod") + sl.syslog(sl.LOG_NOTICE, "loading wirguard kmod") if os.system('sudo modprobe wireguard') != 0: sl.syslog(sl.LOG_NOTICE, "modprobe wireguard failed") raise ConfigError("modprobe wireguard failed") def get_config(): - config_data = { - 'interfaces' : {} - } - c = Config() if not c.exists('interfaces wireguard'): return None - - c.set_level('interfaces') + + c.set_level('interfaces') intfcs = c.list_nodes('wireguard') intfcs_eff = c.list_effective_nodes('wireguard') - new_lst = list( set(intfcs) - set(intfcs_eff) ) - del_lst = list( set(intfcs_eff) - set(intfcs) ) + new_lst = list(set(intfcs) - set(intfcs_eff)) + del_lst = list(set(intfcs_eff) - set(intfcs)) - ### setting deafult and determine status of the config + config_data = { + 'interfaces' : {} + } + ### setting defaults and determine status of the config for intfc in intfcs: cnf = 'wireguard ' + intfc # default data struct - config_data['interfaces'].update ( - { - intfc : { - 'addr' : '', - 'descr' : intfc, ## snmp ifAlias - 'lport' : '', - 'status' : 'exists', - 'state' : 'enabled', - 'mtu' : 1420, - 'peer' : {} - } + config_data['interfaces'].update( + { + intfc : { + 'addr' : '', + 'descr' : intfc, ## snmp ifAlias + 'lport' : '', + 'status' : 'exists', + 'state' : 'enabled', + 'mtu' : '1420', + 'peer' : {} + } } - ) + ) + ### determine status either delete or create for i in new_lst: - config_data['interfaces'][i]['status'] = 'create' + config_data['interfaces'][i]['status'] = 'create' for i in del_lst: - config_data['interfaces'].update ( - { - i : { - 'status': 'delete' + config_data['interfaces'].update( + { + i : { + 'status': 'delete' + } } - } ) - ### based on the status, set real values + ### based on the status, setup conf values for intfc in intfcs: cnf = 'wireguard ' + intfc if config_data['interfaces'][intfc]['status'] != 'delete': - #### addresses + ### addresses if c.exists(cnf + ' address'): config_data['interfaces'][intfc]['addr'] = c.return_values(cnf + ' address') ### listen port - if c.exists(cnf + ' listen-port'): - config_data['interfaces'][intfc]['lport'] = c.return_value(cnf + ' listen-port') + if c.exists(cnf + ' port'): + config_data['interfaces'][intfc]['lport'] = c.return_value(cnf + ' port') ### description if c.exists(cnf + ' description'): config_data['interfaces'][intfc]['descr'] = c.return_value(cnf + ' description') ### mtu if c.exists(cnf + ' mtu'): config_data['interfaces'][intfc]['mtu'] = c.return_value(cnf + ' mtu') - ### peers if c.exists(cnf + ' peer'): for p in c.list_nodes(cnf + ' peer'): - config_data['interfaces'][intfc]['peer'].update ( - { - p : { - 'allowed-ips' : [], - 'endpoint' : '' + config_data['interfaces'][intfc]['peer'].update( + { + p : { + 'allowed-ips' : [], + 'endpoint' : '', + 'pubkey' : '' + } } - } ) + if c.exists(cnf + ' peer ' + p + ' pubkey'): + config_data['interfaces'][intfc]['peer'][p]['pubkey'] = c.return_value(cnf + ' peer ' + p + ' pubkey') if c.exists(cnf + ' peer ' + p + ' allowed-ips'): config_data['interfaces'][intfc]['peer'][p]['allowed-ips'] = c.return_values(cnf + ' peer ' + p + ' allowed-ips') if c.exists(cnf + ' peer ' + p + ' endpoint'): config_data['interfaces'][intfc]['peer'][p]['endpoint'] = c.return_value(cnf + ' peer ' + p + ' endpoint') + if c.exists(cnf + ' peer ' + p + ' persistent-keepalive'): + config_data['interfaces'][intfc]['peer'][p]['persistent-keepalive'] = c.return_value(cnf + ' peer ' + p + ' persistent-keepalive') + if c.exists(cnf + ' peer ' + p + ' preshared-key'): + config_data['interfaces'][intfc]['peer'][p]['psk'] = c.return_value(cnf + ' peer ' + p + ' preshared-key') - ### persistent-keepalive - if c.exists(cnf + ' peer ' + p + ' persistent-keepalive'): - config_data['interfaces'][intfc]['peer'][p]['persistent-keepalive'] = c.return_value(cnf + ' peer ' + p + ' persistent-keepalive') - - #print (config_data) return config_data def verify(c): @@ -130,34 +130,31 @@ def verify(c): for i in c['interfaces']: if c['interfaces'][i]['status'] != 'delete': if not c['interfaces'][i]['addr']: - raise ConfigError("address required for interface " + i) - if not c['interfaces'][i]['lport']: - raise ConfigError("listen-port required for interface " + i) + raise ConfigError("address required for interface " + i) if not c['interfaces'][i]['peer']: raise ConfigError("peer required on interface " + i) - else: - for p in c['interfaces'][i]['peer']: - if not c['interfaces'][i]['peer'][p]['allowed-ips']: - raise ConfigError("allowed-ips required on interface " + i + " for peer " + p) - ### eventually check allowed-ips (if it's an ip and valid CIDR or so) - ### endpoint needs to be IP:port + for p in c['interfaces'][i]['peer']: + if not c['interfaces'][i]['peer'][p]['allowed-ips']: + raise ConfigError("allowed-ips required on interface " + i + " for peer " + p) + if not c['interfaces'][i]['peer'][p]['pubkey']: + raise ConfigError("pubkey from your peer is mandatory on " + i + " for peer " + p) + def apply(c): ### no wg config left, delete all wireguard devices on the os if not c: net_devs = os.listdir('/sys/class/net/') for dev in net_devs: - buf = open('/sys/class/net/' + dev + '/uevent','r').read() + buf = open('/sys/class/net/' + dev + '/uevent', 'r').read() if re.search("DEVTYPE=wireguard", buf, re.I|re.M): - wg_intf = re.sub("INTERFACE=","", re.search("INTERFACE=.*", buf, re.I|re.M).group(0) ) + wg_intf = re.sub("INTERFACE=", "", re.search("INTERFACE=.*", buf, re.I|re.M).group(0)) sl.syslog(sl.LOG_NOTICE, "removing interface " + wg_intf) subprocess.call(['ip l d dev ' + wg_intf + ' >/dev/null'], shell=True) return None - + ### - ## to find the diffs between old config an new config - ## so we only configure/delete what was not previously configured + ## find the diffs between effective config an new config ### c_eff = Config() c_eff.set_level('interfaces wireguard') @@ -175,88 +172,139 @@ def apply(c): subprocess.call(['ip l a dev ' + intf + ' type wireguard 2>/dev/null'], shell=True) for addr in c['interfaces'][intf]['addr']: - add_addr(intf, addr) - configure_interface(c,intf) - subprocess.call(['ip l set up dev ' + intf + ' &>/dev/null'], shell=True) + add_addr(intf, addr) + + subprocess.call(['ip l set up dev ' + intf + ' mtu ' + c['interfaces'][intf]['mtu'] + ' &>/dev/null'], shell=True) + configure_interface(c, intf) ### config updates if c['interfaces'][intf]['status'] == 'exists': ### IP address change - addr_eff = re.sub("\'", "", c_eff.return_effective_values(intf + ' address')).split() - addr_rem = list( set(addr_eff) - set(c['interfaces'][intf]['addr']) ) - addr_add = list( set(c['interfaces'][intf]['addr']) - set(addr_eff) ) + addr_eff = re.sub("\'", "", c_eff.return_effective_values(intf + ' address')).split() + addr_rem = list(set(addr_eff) - set(c['interfaces'][intf]['addr'])) + addr_add = list(set(c['interfaces'][intf]['addr']) - set(addr_eff)) - if len(addr_rem) !=0: + if len(addr_rem) != 0: for addr in addr_rem: del_addr(intf, addr) - if len(addr_add) !=0: + if len(addr_add) != 0: for addr in addr_add: add_addr(intf, addr) - ### persistent-keepalive + ## mtu update + mtu = c['interfaces'][intf]['mtu'] + if mtu != 1420: + sl.syslog(sl.LOG_NOTICE, "setting mtu to " + mtu + " on " + intf) + subprocess.call(['ip l set mtu ' + mtu + ' dev ' + intf + ' &>/dev/null'], shell=True) + + ### persistent-keepalive for p in c_eff.list_nodes(intf + ' peer'): val_eff = "" - val = "" + val = "" if c_eff.exists_effective(intf + ' peer ' + p + ' persistent-keepalive'): val_eff = c_eff.return_effective_value(intf + ' peer ' + p + ' persistent-keepalive') if 'persistent-keepalive' in c['interfaces'][intf]['peer'][p]: val = c['interfaces'][intf]['peer'][p]['persistent-keepalive'] - + ### disable keepalive if val_eff and not val: - c['interfaces'][intf]['peer'][p]['persistent-keepalive'] = 0 - + c['interfaces'][intf]['peer'][p]['persistent-keepalive'] = 0 + ### set new keepalive value if not val_eff and val: c['interfaces'][intf]['peer'][p]['persistent-keepalive'] = val ## wg command call - configure_interface(c,intf) + configure_interface(c, intf) - ### ifalias for snmp from description + ### ifalias for snmp from description descr_eff = c_eff.return_effective_value(intf + ' description') cnf_descr = c['interfaces'][intf]['descr'] if descr_eff != cnf_descr: - open('/sys/class/net/' + str(intf) + '/ifalias','w').write(str(cnf_descr)) + with open('/sys/class/net/' + str(intf) + '/ifalias', 'w') as fh: + fh.write(str(cnf_descr)) def configure_interface(c, intf): for p in c['interfaces'][intf]['peer']: - cmd = "wg set " + intf + \ - " listen-port " + c['interfaces'][intf]['lport'] + \ - " private-key " + pk + \ - " peer " + p - cmd += " allowed-ips " + ## config init for wg call + wg_config = { + 'interface' : intf, + 'port' : 0, + 'private-key' : pk, + 'pubkey' : '', + 'psk' : '/dev/null', + 'allowed-ips' : [], + 'fwmark' : 0x00, + 'endpoint' : None, + 'keepalive' : 0 + } - for ap in c['interfaces'][intf]['peer'][p]['allowed-ips']: - if ap != c['interfaces'][intf]['peer'][p]['allowed-ips'][-1]: - cmd += ap + "," - else: - cmd += ap + ## mandatory settings + wg_config['pubkey'] = c['interfaces'][intf]['peer'][p]['pubkey'] + wg_config['allowed-ips'] = c['interfaces'][intf]['peer'][p]['allowed-ips'] + + ## optional settings + # listen-port + if c['interfaces'][intf]['lport']: + wg_config['port'] = c['interfaces'][intf]['lport'] + + ## endpoint + if c['interfaces'][intf]['peer'][p]['endpoint']: + wg_config['endpoint'] = c['interfaces'][intf]['peer'][p]['endpoint'] + + ## persistent-keepalive + if 'persistent-keepalive' in c['interfaces'][intf]['peer'][p]: + wg_config['keepalive'] = c['interfaces'][intf]['peer'][p]['persistent-keepalive'] + + ## preshared-key - is only read from a file, it's called via sudo redirection doesn't work either + if 'psk' in c['interfaces'][intf]['peer'][p]: + old_umask = os.umask(0o077) + open(psk_file, 'w').write(str(c['interfaces'][intf]['peer'][p]['psk'])) + os.umask(old_umask) + wg_config['psk'] = psk_file + + ### assemble wg command + cmd = "sudo wg set " + intf + cmd += " listen-port " + str(wg_config['port']) + cmd += " private-key " + wg_config['private-key'] + cmd += " peer " + wg_config['pubkey'] + cmd += " preshared-key " + wg_config['psk'] + cmd += " allowed-ips " + for ap in wg_config['allowed-ips']: + if ap != wg_config['allowed-ips'][-1]: + cmd += ap + "," + else: + cmd += ap - ## endpoint is only required if wg runs as client - if c['interfaces'][intf]['peer'][p]['endpoint']: - cmd += " endpoint " + c['interfaces'][intf]['peer'][p]['endpoint'] + if wg_config['endpoint']: + cmd += " endpoint " + wg_config['endpoint'] - if 'persistent-keepalive' in c['interfaces'][intf]['peer'][p]: - cmd += " persistent-keepalive " + str( c['interfaces'][intf]['peer'][p]['persistent-keepalive']) + if wg_config['keepalive'] != 0: + cmd += " persistent-keepalive " + wg_config['keepalive'] + else: + cmd += " persistent-keepalive 0" - sl.syslog(sl.LOG_NOTICE, "sudo " + cmd) - subprocess.call([ 'sudo ' + cmd], shell=True) + sl.syslog(sl.LOG_NOTICE, cmd) + #print (cmd) + subprocess.call([cmd], shell=True) + """ remove psk_file """ + if os.path.exists(psk_file): + os.remove(psk_file) def add_addr(intf, addr): ret = subprocess.call(['ip a a dev ' + intf + ' ' + addr + ' &>/dev/null'], shell=True) if ret != 0: - raise ConfigError('Can\'t set IP ' + addr + ' on ' + intf ) + raise ConfigError('Can\'t set IP ' + addr + ' on ' + intf) else: sl.syslog(sl.LOG_NOTICE, "ip a a dev " + intf + " " + addr) def del_addr(intf, addr): ret = subprocess.call(['ip a d dev ' + intf + ' ' + addr + ' &>/dev/null'], shell=True) if ret != 0: - raise ConfigError('Can\'t delete IP ' + addr + ' on ' + intf ) + raise ConfigError('Can\'t delete IP ' + addr + ' on ' + intf) else: sl.syslog(sl.LOG_NOTICE, "ip a d dev " + intf + " " + addr) @@ -265,9 +313,7 @@ if __name__ == '__main__': check_kmod() c = get_config() verify(c) - #generate(c) apply(c) except ConfigError as e: print(e) sys.exit(1) - |