diff options
Diffstat (limited to 'python/vyos')
| -rw-r--r-- | python/vyos/configdict.py | 42 | ||||
| -rw-r--r-- | python/vyos/ifconfig/bond.py | 4 | ||||
| -rw-r--r-- | python/vyos/ifconfig/bridge.py | 4 | ||||
| -rw-r--r-- | python/vyos/ifconfig/ethernet.py | 2 | ||||
| -rw-r--r-- | python/vyos/ifconfig/interface.py | 16 | ||||
| -rw-r--r-- | python/vyos/ifconfig/pppoe.py | 2 | ||||
| -rw-r--r-- | python/vyos/ifconfig/tunnel.py | 2 | ||||
| -rw-r--r-- | python/vyos/utils/__init__.py | 1 | ||||
| -rw-r--r-- | python/vyos/utils/assertion.py | 81 | ||||
| -rw-r--r-- | python/vyos/utils/network.py | 186 | ||||
| -rw-r--r-- | python/vyos/validate.py | 321 |
11 files changed, 323 insertions, 338 deletions
diff --git a/python/vyos/configdict.py b/python/vyos/configdict.py index 38f4475d4..2a47e88f9 100644 --- a/python/vyos/configdict.py +++ b/python/vyos/configdict.py @@ -245,6 +245,48 @@ def is_mirror_intf(conf, interface, direction=None): return ret_val +def has_address_configured(conf, intf): + """ + Checks if interface has an address configured. + Checks the following config nodes: + 'address', 'ipv6 address eui64', 'ipv6 address autoconf' + + Returns True if interface has address configured, False if it doesn't. + """ + from vyos.ifconfig import Section + ret = False + + old_level = conf.get_level() + conf.set_level([]) + + intfpath = 'interfaces ' + Section.get_config_path(intf) + if ( conf.exists(f'{intfpath} address') or + conf.exists(f'{intfpath} ipv6 address autoconf') or + conf.exists(f'{intfpath} ipv6 address eui64') ): + ret = True + + conf.set_level(old_level) + return ret + +def has_vrf_configured(conf, intf): + """ + Checks if interface has a VRF configured. + + Returns True if interface has VRF configured, False if it doesn't. + """ + from vyos.ifconfig import Section + ret = False + + old_level = conf.get_level() + conf.set_level([]) + + tmp = ['interfaces', Section.get_config_path(intf), 'vrf'] + if conf.exists(tmp): + ret = True + + conf.set_level(old_level) + return ret + def has_vlan_subinterface_configured(conf, intf): """ Checks if interface has an VLAN subinterface configured. diff --git a/python/vyos/ifconfig/bond.py b/python/vyos/ifconfig/bond.py index e88f860be..d1d7d48c4 100644 --- a/python/vyos/ifconfig/bond.py +++ b/python/vyos/ifconfig/bond.py @@ -18,8 +18,8 @@ import os from vyos.ifconfig.interface import Interface from vyos.utils.process import cmd from vyos.utils.dict import dict_search -from vyos.validate import assert_list -from vyos.validate import assert_positive +from vyos.utils.assertion import assert_list +from vyos.utils.assertion import assert_positive @Interface.register class BondIf(Interface): diff --git a/python/vyos/ifconfig/bridge.py b/python/vyos/ifconfig/bridge.py index b103b49d8..b29e71394 100644 --- a/python/vyos/ifconfig/bridge.py +++ b/python/vyos/ifconfig/bridge.py @@ -17,8 +17,8 @@ from netifaces import interfaces import json from vyos.ifconfig.interface import Interface -from vyos.validate import assert_boolean -from vyos.validate import assert_positive +from vyos.utils.assertion import assert_boolean +from vyos.utils.assertion import assert_positive from vyos.utils.process import cmd from vyos.utils.dict import dict_search from vyos.configdict import get_vlan_ids diff --git a/python/vyos/ifconfig/ethernet.py b/python/vyos/ifconfig/ethernet.py index 4ff044c23..24ce3a803 100644 --- a/python/vyos/ifconfig/ethernet.py +++ b/python/vyos/ifconfig/ethernet.py @@ -23,7 +23,7 @@ from vyos.ifconfig.interface import Interface from vyos.utils.dict import dict_search from vyos.utils.file import read_file from vyos.utils.process import run -from vyos.validate import assert_list +from vyos.utils.assertion import assert_list @Interface.register class EthernetIf(Interface): diff --git a/python/vyos/ifconfig/interface.py b/python/vyos/ifconfig/interface.py index 48eb68cae..8ed5cb114 100644 --- a/python/vyos/ifconfig/interface.py +++ b/python/vyos/ifconfig/interface.py @@ -41,14 +41,14 @@ from vyos.utils.network import get_interface_namespace from vyos.utils.process import is_systemd_service_active from vyos.template import is_ipv4 from vyos.template import is_ipv6 -from vyos.validate import is_intf_addr_assigned -from vyos.validate import is_ipv6_link_local -from vyos.validate import assert_boolean -from vyos.validate import assert_list -from vyos.validate import assert_mac -from vyos.validate import assert_mtu -from vyos.validate import assert_positive -from vyos.validate import assert_range +from vyos.utils.network import is_intf_addr_assigned +from vyos.utils.network import is_ipv6_link_local +from vyos.utils.assertion import assert_boolean +from vyos.utils.assertion import assert_list +from vyos.utils.assertion import assert_mac +from vyos.utils.assertion import assert_mtu +from vyos.utils.assertion import assert_positive +from vyos.utils.assertion import assert_range from vyos.ifconfig.control import Control from vyos.ifconfig.vrrp import VRRP diff --git a/python/vyos/ifconfig/pppoe.py b/python/vyos/ifconfig/pppoe.py index fd4590beb..febf1452d 100644 --- a/python/vyos/ifconfig/pppoe.py +++ b/python/vyos/ifconfig/pppoe.py @@ -14,7 +14,7 @@ # License along with this library. If not, see <http://www.gnu.org/licenses/>. from vyos.ifconfig.interface import Interface -from vyos.validate import assert_range +from vyos.utils.assertion import assert_range from vyos.utils.network import get_interface_config @Interface.register diff --git a/python/vyos/ifconfig/tunnel.py b/python/vyos/ifconfig/tunnel.py index fb2f38e2b..9ba7b31a6 100644 --- a/python/vyos/ifconfig/tunnel.py +++ b/python/vyos/ifconfig/tunnel.py @@ -18,7 +18,7 @@ from vyos.ifconfig.interface import Interface from vyos.utils.dict import dict_search -from vyos.validate import assert_list +from vyos.utils.assertion import assert_list def enable_to_on(value): if value == 'enable': diff --git a/python/vyos/utils/__init__.py b/python/vyos/utils/__init__.py index f2783113a..12ef2d3b8 100644 --- a/python/vyos/utils/__init__.py +++ b/python/vyos/utils/__init__.py @@ -13,6 +13,7 @@ # 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/>. +from vyos.utils import assertion from vyos.utils import auth from vyos.utils import boot from vyos.utils import commit diff --git a/python/vyos/utils/assertion.py b/python/vyos/utils/assertion.py new file mode 100644 index 000000000..1aaa54dff --- /dev/null +++ b/python/vyos/utils/assertion.py @@ -0,0 +1,81 @@ +# Copyright 2023 VyOS maintainers and contributors <maintainers@vyos.io> +# +# This library is free software; you can redistribute it and/or +# modify it under the terms of the GNU Lesser General Public +# 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/>. + +def assert_boolean(b): + if int(b) not in (0, 1): + raise ValueError(f'Value {b} out of range') + +def assert_range(value, lower=0, count=3): + if int(value, 16) not in range(lower, lower+count): + raise ValueError("Value out of range") + +def assert_list(s, l): + if s not in l: + o = ' or '.join([f'"{n}"' for n in l]) + raise ValueError(f'state must be {o}, got {s}') + +def assert_number(n): + if not str(n).isnumeric(): + raise ValueError(f'{n} must be a number') + +def assert_positive(n, smaller=0): + assert_number(n) + if int(n) < smaller: + raise ValueError(f'{n} is smaller than {smaller}') + +def assert_mtu(mtu, ifname): + assert_number(mtu) + + import json + from vyos.utils.process import cmd + out = cmd(f'ip -j -d link show dev {ifname}') + # [{"ifindex":2,"ifname":"eth0","flags":["BROADCAST","MULTICAST","UP","LOWER_UP"],"mtu":1500,"qdisc":"pfifo_fast","operstate":"UP","linkmode":"DEFAULT","group":"default","txqlen":1000,"link_type":"ether","address":"08:00:27:d9:5b:04","broadcast":"ff:ff:ff:ff:ff:ff","promiscuity":0,"min_mtu":46,"max_mtu":16110,"inet6_addr_gen_mode":"none","num_tx_queues":1,"num_rx_queues":1,"gso_max_size":65536,"gso_max_segs":65535}] + parsed = json.loads(out)[0] + min_mtu = int(parsed.get('min_mtu', '0')) + # cur_mtu = parsed.get('mtu',0), + max_mtu = int(parsed.get('max_mtu', '0')) + cur_mtu = int(mtu) + + if (min_mtu and cur_mtu < min_mtu) or cur_mtu < 68: + raise ValueError(f'MTU is too small for interface "{ifname}": {mtu} < {min_mtu}') + if (max_mtu and cur_mtu > max_mtu) or cur_mtu > 65536: + raise ValueError(f'MTU is too small for interface "{ifname}": {mtu} > {max_mtu}') + +def assert_mac(m): + split = m.split(':') + size = len(split) + + # a mac address consits out of 6 octets + if size != 6: + raise ValueError(f'wrong number of MAC octets ({size}): {m}') + + octets = [] + try: + for octet in split: + octets.append(int(octet, 16)) + except ValueError: + raise ValueError(f'invalid hex number "{octet}" in : {m}') + + # validate against the first mac address byte if it's a multicast + # address + if octets[0] & 1: + raise ValueError(f'{m} is a multicast MAC address') + + # overall mac address is not allowed to be 00:00:00:00:00:00 + if sum(octets) == 0: + raise ValueError('00:00:00:00:00:00 is not a valid MAC address') + + if octets[:5] == (0, 0, 94, 0, 1): + raise ValueError(f'{m} is a VRRP MAC address') diff --git a/python/vyos/utils/network.py b/python/vyos/utils/network.py index 3786caf26..3f9a3ef4b 100644 --- a/python/vyos/utils/network.py +++ b/python/vyos/utils/network.py @@ -13,7 +13,15 @@ # 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 +def _are_same_ip(one, two): + from socket import AF_INET + from socket import AF_INET6 + from socket import inet_pton + from vyos.template import is_ipv4 + # compare the binary representation of the IP + f_one = AF_INET if is_ipv4(one) else AF_INET6 + s_two = AF_INET if is_ipv4(two) else AF_INET6 + return inet_pton(f_one, one) == inet_pton(f_one, two) def get_protocol_by_name(protocol_name): """Get protocol number by protocol name @@ -48,6 +56,7 @@ def get_interface_config(interface): """ Returns the used encapsulation protocol for given interface. If interface does not exist, None is returned. """ + import os if not os.path.exists(f'/sys/class/net/{interface}'): return None from json import loads @@ -59,6 +68,7 @@ def get_interface_address(interface): """ Returns the used encapsulation protocol for given interface. If interface does not exist, None is returned. """ + import os if not os.path.exists(f'/sys/class/net/{interface}'): return None from json import loads @@ -85,7 +95,6 @@ def get_interface_namespace(iface): if iface == tmp["ifname"]: return netns - def is_wwan_connected(interface): """ Determine if a given WWAN interface, e.g. wwan0 is connected to the carrier network or not """ @@ -110,6 +119,7 @@ def is_wwan_connected(interface): def get_bridge_fdb(interface): """ Returns the forwarding database entries for a given interface """ + import os if not os.path.exists(f'/sys/class/net/{interface}'): return None from json import loads @@ -211,3 +221,175 @@ def is_listen_port_bind_service(port: int, service: str) -> bool: if service == pid_name and port == pid_port: return True return False + +def is_ipv6_link_local(addr): + """ Check if addrsss is an IPv6 link-local address. Returns True/False """ + from ipaddress import ip_interface + from vyos.template import is_ipv6 + addr = addr.split('%')[0] + if is_ipv6(addr): + if ip_interface(addr).is_link_local: + return True + + return False + +def is_addr_assigned(ip_address, vrf=None) -> bool: + """ Verify if the given IPv4/IPv6 address is assigned to any interface """ + from netifaces import interfaces + from vyos.utils.network import get_interface_config + from vyos.utils.dict import dict_search + + for interface in interfaces(): + # Check if interface belongs to the requested VRF, if this is not the + # case there is no need to proceed with this data set - continue loop + # with next element + tmp = get_interface_config(interface) + if dict_search('master', tmp) != vrf: + continue + + if is_intf_addr_assigned(interface, ip_address): + return True + + return False + +def is_intf_addr_assigned(intf, address) -> bool: + """ + Verify if the given IPv4/IPv6 address is assigned to specific interface. + It can check both a single IP address (e.g. 192.0.2.1 or a assigned CIDR + address 192.0.2.1/24. + """ + from vyos.template import is_ipv4 + + from netifaces import ifaddresses + from netifaces import AF_INET + from netifaces import AF_INET6 + + # check if the requested address type is configured at all + # { + # 17: [{'addr': '08:00:27:d9:5b:04', 'broadcast': 'ff:ff:ff:ff:ff:ff'}], + # 2: [{'addr': '10.0.2.15', 'netmask': '255.255.255.0', 'broadcast': '10.0.2.255'}], + # 10: [{'addr': 'fe80::a00:27ff:fed9:5b04%eth0', 'netmask': 'ffff:ffff:ffff:ffff::'}] + # } + try: + addresses = ifaddresses(intf) + except ValueError as e: + print(e) + return False + + # determine IP version (AF_INET or AF_INET6) depending on passed address + addr_type = AF_INET if is_ipv4(address) else AF_INET6 + + # Check every IP address on this interface for a match + netmask = None + if '/' in address: + address, netmask = address.split('/') + for ip in addresses.get(addr_type, []): + # ip can have the interface name in the 'addr' field, we need to remove it + # {'addr': 'fe80::a00:27ff:fec5:f821%eth2', 'netmask': 'ffff:ffff:ffff:ffff::'} + ip_addr = ip['addr'].split('%')[0] + + if not _are_same_ip(address, ip_addr): + continue + + # we do not have a netmask to compare against, they are the same + if not netmask: + return True + + prefixlen = '' + if is_ipv4(ip_addr): + prefixlen = sum([bin(int(_)).count('1') for _ in ip['netmask'].split('.')]) + else: + prefixlen = sum([bin(int(_,16)).count('1') for _ in ip['netmask'].split('/')[0].split(':') if _]) + + if str(prefixlen) == netmask: + return True + + return False + +def is_loopback_addr(addr): + """ Check if supplied IPv4/IPv6 address is a loopback address """ + from ipaddress import ip_address + return ip_address(addr).is_loopback + +def is_wireguard_key_pair(private_key: str, public_key:str) -> bool: + """ + Checks if public/private keys are keypair + :param private_key: Wireguard private key + :type private_key: str + :param public_key: Wireguard public key + :type public_key: str + :return: If public/private keys are keypair returns True else False + :rtype: bool + """ + from vyos.utils.process import cmd + gen_public_key = cmd('wg pubkey', input=private_key) + if gen_public_key == public_key: + return True + else: + return False + +def is_subnet_connected(subnet, primary=False): + """ + Verify is the given IPv4/IPv6 subnet is connected to any interface on this + system. + + primary check if the subnet is reachable via the primary IP address of this + interface, or in other words has a broadcast address configured. ISC DHCP + for instance will complain if it should listen on non broadcast interfaces. + + Return True/False + """ + from ipaddress import ip_address + from ipaddress import ip_network + + from netifaces import ifaddresses + from netifaces import interfaces + from netifaces import AF_INET + from netifaces import AF_INET6 + + from vyos.template import is_ipv6 + + # determine IP version (AF_INET or AF_INET6) depending on passed address + addr_type = AF_INET + if is_ipv6(subnet): + addr_type = AF_INET6 + + for interface in interfaces(): + # check if the requested address type is configured at all + if addr_type not in ifaddresses(interface).keys(): + continue + + # An interface can have multiple addresses, but some software components + # only support the primary address :( + if primary: + ip = ifaddresses(interface)[addr_type][0]['addr'] + if ip_address(ip) in ip_network(subnet): + return True + else: + # Check every assigned IP address if it is connected to the subnet + # in question + for ip in ifaddresses(interface)[addr_type]: + # remove interface extension (e.g. %eth0) that gets thrown on the end of _some_ addrs + addr = ip['addr'].split('%')[0] + if ip_address(addr) in ip_network(subnet): + return True + + return False + +def is_afi_configured(interface, afi): + """ Check if given address family is configured, or in other words - an IP + address is assigned to the interface. """ + from netifaces import ifaddresses + from netifaces import AF_INET + from netifaces import AF_INET6 + + if afi not in [AF_INET, AF_INET6]: + raise ValueError('Address family must be in [AF_INET, AF_INET6]') + + try: + addresses = ifaddresses(interface) + except ValueError as e: + print(e) + return False + + return afi in addresses diff --git a/python/vyos/validate.py b/python/vyos/validate.py deleted file mode 100644 index b149b258f..000000000 --- a/python/vyos/validate.py +++ /dev/null @@ -1,321 +0,0 @@ -# Copyright 2018-2023 VyOS maintainers and contributors <maintainers@vyos.io> -# -# This library is free software; you can redistribute it and/or -# modify it under the terms of the GNU Lesser General Public -# 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/>. - -# Important note when you are adding new validation functions: -# -# The Control class will analyse the signature of the function in this file -# and will build the parameters to be passed to it. -# -# The parameter names "ifname" and "self" will get the Interface name and class -# parameters with default will be left unset -# all other paramters will receive the value to check - -def is_ipv6_link_local(addr): - """ Check if addrsss is an IPv6 link-local address. Returns True/False """ - from ipaddress import ip_interface - from vyos.template import is_ipv6 - addr = addr.split('%')[0] - if is_ipv6(addr): - if ip_interface(addr).is_link_local: - return True - - return False - -def _are_same_ip(one, two): - from socket import AF_INET - from socket import AF_INET6 - from socket import inet_pton - from vyos.template import is_ipv4 - # compare the binary representation of the IP - f_one = AF_INET if is_ipv4(one) else AF_INET6 - s_two = AF_INET if is_ipv4(two) else AF_INET6 - return inet_pton(f_one, one) == inet_pton(f_one, two) - -def is_intf_addr_assigned(intf, address) -> bool: - """ - Verify if the given IPv4/IPv6 address is assigned to specific interface. - It can check both a single IP address (e.g. 192.0.2.1 or a assigned CIDR - address 192.0.2.1/24. - """ - from vyos.template import is_ipv4 - - from netifaces import ifaddresses - from netifaces import AF_INET - from netifaces import AF_INET6 - - # check if the requested address type is configured at all - # { - # 17: [{'addr': '08:00:27:d9:5b:04', 'broadcast': 'ff:ff:ff:ff:ff:ff'}], - # 2: [{'addr': '10.0.2.15', 'netmask': '255.255.255.0', 'broadcast': '10.0.2.255'}], - # 10: [{'addr': 'fe80::a00:27ff:fed9:5b04%eth0', 'netmask': 'ffff:ffff:ffff:ffff::'}] - # } - try: - addresses = ifaddresses(intf) - except ValueError as e: - print(e) - return False - - # determine IP version (AF_INET or AF_INET6) depending on passed address - addr_type = AF_INET if is_ipv4(address) else AF_INET6 - - # Check every IP address on this interface for a match - netmask = None - if '/' in address: - address, netmask = address.split('/') - for ip in addresses.get(addr_type, []): - # ip can have the interface name in the 'addr' field, we need to remove it - # {'addr': 'fe80::a00:27ff:fec5:f821%eth2', 'netmask': 'ffff:ffff:ffff:ffff::'} - ip_addr = ip['addr'].split('%')[0] - - if not _are_same_ip(address, ip_addr): - continue - - # we do not have a netmask to compare against, they are the same - if not netmask: - return True - - prefixlen = '' - if is_ipv4(ip_addr): - prefixlen = sum([bin(int(_)).count('1') for _ in ip['netmask'].split('.')]) - else: - prefixlen = sum([bin(int(_,16)).count('1') for _ in ip['netmask'].split('/')[0].split(':') if _]) - - if str(prefixlen) == netmask: - return True - - return False - -def is_addr_assigned(ip_address, vrf=None) -> bool: - """ Verify if the given IPv4/IPv6 address is assigned to any interface """ - from netifaces import interfaces - from vyos.utils.network import get_interface_config - from vyos.utils.dict import dict_search - - for interface in interfaces(): - # Check if interface belongs to the requested VRF, if this is not the - # case there is no need to proceed with this data set - continue loop - # with next element - tmp = get_interface_config(interface) - if dict_search('master', tmp) != vrf: - continue - - if is_intf_addr_assigned(interface, ip_address): - return True - - return False - -def is_afi_configured(interface, afi): - """ Check if given address family is configured, or in other words - an IP - address is assigned to the interface. """ - from netifaces import ifaddresses - from netifaces import AF_INET - from netifaces import AF_INET6 - - if afi not in [AF_INET, AF_INET6]: - raise ValueError('Address family must be in [AF_INET, AF_INET6]') - - try: - addresses = ifaddresses(interface) - except ValueError as e: - print(e) - return False - - return afi in addresses - -def is_loopback_addr(addr): - """ Check if supplied IPv4/IPv6 address is a loopback address """ - from ipaddress import ip_address - return ip_address(addr).is_loopback - -def is_subnet_connected(subnet, primary=False): - """ - Verify is the given IPv4/IPv6 subnet is connected to any interface on this - system. - - primary check if the subnet is reachable via the primary IP address of this - interface, or in other words has a broadcast address configured. ISC DHCP - for instance will complain if it should listen on non broadcast interfaces. - - Return True/False - """ - from ipaddress import ip_address - from ipaddress import ip_network - - from netifaces import ifaddresses - from netifaces import interfaces - from netifaces import AF_INET - from netifaces import AF_INET6 - - from vyos.template import is_ipv6 - - # determine IP version (AF_INET or AF_INET6) depending on passed address - addr_type = AF_INET - if is_ipv6(subnet): - addr_type = AF_INET6 - - for interface in interfaces(): - # check if the requested address type is configured at all - if addr_type not in ifaddresses(interface).keys(): - continue - - # An interface can have multiple addresses, but some software components - # only support the primary address :( - if primary: - ip = ifaddresses(interface)[addr_type][0]['addr'] - if ip_address(ip) in ip_network(subnet): - return True - else: - # Check every assigned IP address if it is connected to the subnet - # in question - for ip in ifaddresses(interface)[addr_type]: - # remove interface extension (e.g. %eth0) that gets thrown on the end of _some_ addrs - addr = ip['addr'].split('%')[0] - if ip_address(addr) in ip_network(subnet): - return True - - return False - - -def assert_boolean(b): - if int(b) not in (0, 1): - raise ValueError(f'Value {b} out of range') - - -def assert_range(value, lower=0, count=3): - if int(value, 16) not in range(lower, lower+count): - raise ValueError("Value out of range") - - -def assert_list(s, l): - if s not in l: - o = ' or '.join([f'"{n}"' for n in l]) - raise ValueError(f'state must be {o}, got {s}') - - -def assert_number(n): - if not str(n).isnumeric(): - raise ValueError(f'{n} must be a number') - - -def assert_positive(n, smaller=0): - assert_number(n) - if int(n) < smaller: - raise ValueError(f'{n} is smaller than {smaller}') - - -def assert_mtu(mtu, ifname): - assert_number(mtu) - - import json - from vyos.utils.process import cmd - out = cmd(f'ip -j -d link show dev {ifname}') - # [{"ifindex":2,"ifname":"eth0","flags":["BROADCAST","MULTICAST","UP","LOWER_UP"],"mtu":1500,"qdisc":"pfifo_fast","operstate":"UP","linkmode":"DEFAULT","group":"default","txqlen":1000,"link_type":"ether","address":"08:00:27:d9:5b:04","broadcast":"ff:ff:ff:ff:ff:ff","promiscuity":0,"min_mtu":46,"max_mtu":16110,"inet6_addr_gen_mode":"none","num_tx_queues":1,"num_rx_queues":1,"gso_max_size":65536,"gso_max_segs":65535}] - parsed = json.loads(out)[0] - min_mtu = int(parsed.get('min_mtu', '0')) - # cur_mtu = parsed.get('mtu',0), - max_mtu = int(parsed.get('max_mtu', '0')) - cur_mtu = int(mtu) - - if (min_mtu and cur_mtu < min_mtu) or cur_mtu < 68: - raise ValueError(f'MTU is too small for interface "{ifname}": {mtu} < {min_mtu}') - if (max_mtu and cur_mtu > max_mtu) or cur_mtu > 65536: - raise ValueError(f'MTU is too small for interface "{ifname}": {mtu} > {max_mtu}') - - -def assert_mac(m): - split = m.split(':') - size = len(split) - - # a mac address consits out of 6 octets - if size != 6: - raise ValueError(f'wrong number of MAC octets ({size}): {m}') - - octets = [] - try: - for octet in split: - octets.append(int(octet, 16)) - except ValueError: - raise ValueError(f'invalid hex number "{octet}" in : {m}') - - # validate against the first mac address byte if it's a multicast - # address - if octets[0] & 1: - raise ValueError(f'{m} is a multicast MAC address') - - # overall mac address is not allowed to be 00:00:00:00:00:00 - if sum(octets) == 0: - raise ValueError('00:00:00:00:00:00 is not a valid MAC address') - - if octets[:5] == (0, 0, 94, 0, 1): - raise ValueError(f'{m} is a VRRP MAC address') - -def has_address_configured(conf, intf): - """ - Checks if interface has an address configured. - Checks the following config nodes: - 'address', 'ipv6 address eui64', 'ipv6 address autoconf' - - Returns True if interface has address configured, False if it doesn't. - """ - from vyos.ifconfig import Section - ret = False - - old_level = conf.get_level() - conf.set_level([]) - - intfpath = 'interfaces ' + Section.get_config_path(intf) - if ( conf.exists(f'{intfpath} address') or - conf.exists(f'{intfpath} ipv6 address autoconf') or - conf.exists(f'{intfpath} ipv6 address eui64') ): - ret = True - - conf.set_level(old_level) - return ret - -def has_vrf_configured(conf, intf): - """ - Checks if interface has a VRF configured. - - Returns True if interface has VRF configured, False if it doesn't. - """ - from vyos.ifconfig import Section - ret = False - - old_level = conf.get_level() - conf.set_level([]) - - tmp = ['interfaces', Section.get_config_path(intf), 'vrf'] - if conf.exists(tmp): - ret = True - - conf.set_level(old_level) - return ret - -def is_wireguard_key_pair(private_key: str, public_key:str) -> bool: - """ - Checks if public/private keys are keypair - :param private_key: Wireguard private key - :type private_key: str - :param public_key: Wireguard public key - :type public_key: str - :return: If public/private keys are keypair returns True else False - :rtype: bool - """ - from vyos.utils.process import cmd - gen_public_key = cmd('wg pubkey', input=private_key) - if gen_public_key == public_key: - return True - else: - return False |