diff options
Diffstat (limited to 'python/vyos/ifconfig.py')
| -rw-r--r-- | python/vyos/ifconfig.py | 111 |
1 files changed, 71 insertions, 40 deletions
diff --git a/python/vyos/ifconfig.py b/python/vyos/ifconfig.py index c5d3e447b..1886addfc 100644 --- a/python/vyos/ifconfig.py +++ b/python/vyos/ifconfig.py @@ -61,6 +61,7 @@ class Interface: >>> i = Interface('eth0') """ self._ifname = str(ifname) + self._state = 'down' if not os.path.exists('/sys/class/net/{}'.format(ifname)) and not type: raise Exception('interface "{}" not found'.format(self._ifname)) @@ -111,8 +112,8 @@ class Interface: # All subinterfaces are now removed, continue on the physical interface # stop DHCP(v6) if running - self.del_dhcp() - self.del_dhcpv6() + self._del_dhcp() + self._del_dhcpv6() # NOTE (Improvement): # after interface removal no other commands should be allowed @@ -359,6 +360,8 @@ class Interface: if state not in ['up', 'down']: raise ValueError('state must be "up" or "down"') + self._state = state + # Assemble command executed on system. Unfortunately there is no way # to up/down an interface via sysfs cmd = 'ip link set dev {} {}'.format(self._ifname, state) @@ -495,8 +498,14 @@ class Interface: def add_addr(self, addr): """ - Add IP address to interface. Address is only added if it yet not added - to that interface. + Add IP(v6) address to interface. Address is only added if it is not + already assigned to that interface. + + addr: can be an IPv4 address, IPv6 address, dhcp or dhcpv6! + IPv4: add IPv4 address to interface + IPv6: add IPv6 address to interface + dhcp: start dhclient (IPv4) on interface + dhcpv6: start dhclient (IPv6) on interface Example: >>> from vyos.ifconfig import Interface @@ -506,13 +515,25 @@ class Interface: >>> j.get_addr() ['192.0.2.1/24', '2001:db8::ffff/64'] """ - if not is_intf_addr_assigned(self._ifname, addr): - cmd = 'ip addr add "{}" dev "{}"'.format(addr, self._ifname) - self._cmd(cmd) + if addr == 'dhcp': + self._set_dhcp() + elif addr == 'dhcpv6': + self._set_dhcpv6() + else: + if not is_intf_addr_assigned(self._ifname, addr): + cmd = 'ip addr add "{}" dev "{}"'.format(addr, self._ifname) + self._cmd(cmd) def del_addr(self, addr): """ - Remove IP address from interface. + Delete IP(v6) address to interface. Address is only added if it is + assigned to that interface. + + addr: can be an IPv4 address, IPv6 address, dhcp or dhcpv6! + IPv4: delete IPv4 address from interface + IPv6: delete IPv6 address from interface + dhcp: stop dhclient (IPv4) on interface + dhcpv6: stop dhclient (IPv6) on interface Example: >>> from vyos.ifconfig import Interface @@ -525,12 +546,17 @@ class Interface: >>> j.get_addr() ['2001:db8::ffff/64'] """ - if is_intf_addr_assigned(self._ifname, addr): - cmd = 'ip addr del "{}" dev "{}"'.format(addr, self._ifname) - self._cmd(cmd) + if addr == 'dhcp': + self._del_dhcp() + elif addr == 'dhcpv6': + self._del_dhcpv6() + else: + if is_intf_addr_assigned(self._ifname, addr): + cmd = 'ip addr del "{}" dev "{}"'.format(addr, self._ifname) + self._cmd(cmd) # replace dhcpv4/v6 with systemd.networkd? - def set_dhcp(self): + def _set_dhcp(self): """ Configure interface as DHCP client. The dhclient binary is automatically started in background! @@ -557,15 +583,17 @@ class Interface: with open(self._dhcp_cfg_file, 'w') as f: f.write(dhcp_text) - cmd = 'start-stop-daemon --start --quiet --pidfile ' + \ - self._dhcp_pid_file - cmd += ' --exec /sbin/dhclient --' - # now pass arguments to dhclient binary - cmd += ' -4 -nw -cf {} -pf {} -lf {} {}'.format( - self._dhcp_cfg_file, self._dhcp_pid_file, self._dhcp_lease_file, self._ifname) - self._cmd(cmd) + if self._state == 'up': + cmd = 'start-stop-daemon --start --quiet --pidfile ' + \ + self._dhcp_pid_file + cmd += ' --exec /sbin/dhclient --' + # now pass arguments to dhclient binary + cmd += ' -4 -nw -cf {} -pf {} -lf {} {}'.format( + self._dhcp_cfg_file, self._dhcp_pid_file, self._dhcp_lease_file, self._ifname) + self._cmd(cmd) - def del_dhcp(self): + + def _del_dhcp(self): """ De-configure interface as DHCP clinet. All auto generated files like pid, config and lease will be removed. @@ -601,7 +629,8 @@ class Interface: if os.path.isfile(self._dhcp_lease_file): os.remove(self._dhcp_lease_file) - def set_dhcpv6(self): + + def _set_dhcpv6(self): """ Configure interface as DHCPv6 client. The dhclient binary is automatically started in background! @@ -622,25 +651,28 @@ class Interface: with open(self._dhcpv6_cfg_file, 'w') as f: f.write(dhcpv6_text) - # https://bugs.launchpad.net/ubuntu/+source/ifupdown/+bug/1447715 - # - # wee need to wait for IPv6 DAD to finish once and interface is added - # this suxx :-( - sleep(5) + if self._state == 'up': + # https://bugs.launchpad.net/ubuntu/+source/ifupdown/+bug/1447715 + # + # wee need to wait for IPv6 DAD to finish once and interface is added + # this suxx :-( + sleep(5) - # no longer accept router announcements on this interface - cmd = 'sysctl -q -w net.ipv6.conf.{}.accept_ra=0'.format(self._ifname) - self._cmd(cmd) + # no longer accept router announcements on this interface + cmd = 'sysctl -q -w net.ipv6.conf.{}.accept_ra=0'.format(self._ifname) + self._cmd(cmd) - cmd = 'start-stop-daemon --start --quiet --pidfile ' + \ - self._dhcpv6_pid_file - cmd += ' --exec /sbin/dhclient --' - # now pass arguments to dhclient binary - cmd += ' -6 -nw -cf {} -pf {} -lf {} {}'.format( - self._dhcpv6_cfg_file, self._dhcpv6_pid_file, self._dhcpv6_lease_file, self._ifname) - self._cmd(cmd) + # assemble command-line to start DHCPv6 client (dhclient) + cmd = 'start-stop-daemon --start --quiet --pidfile ' + \ + self._dhcpv6_pid_file + cmd += ' --exec /sbin/dhclient --' + # now pass arguments to dhclient binary + cmd += ' -6 -nw -cf {} -pf {} -lf {} {}'.format( + self._dhcpv6_cfg_file, self._dhcpv6_pid_file, self._dhcpv6_lease_file, self._ifname) + self._cmd(cmd) - def del_dhcpv6(self): + + def _del_dhcpv6(self): """ De-configure interface as DHCPv6 clinet. All auto generated files like pid, config and lease will be removed. @@ -1281,7 +1313,6 @@ class BondIf(EthernetIf): class WireGuardIf(Interface): - """ Wireguard interface class, contains a comnfig dictionary since wireguard VPN is being comnfigured via the wg command rather than @@ -1293,11 +1324,11 @@ class WireGuardIf(Interface): >>> from vyos.ifconfig import WireGuardIf as wg_if >>> wg_intfc = wg_if("wg01") >>> print (wg_intfc.wg_config) - {'private-key': None, 'keepalive': 0, 'endpoint': None, 'port': 0, + {'private-key': None, 'keepalive': 0, 'endpoint': None, 'port': 0, 'allowed-ips': [], 'pubkey': None, 'fwmark': 0, 'psk': '/dev/null'} >>> wg_intfc.wg_config['keepalive'] = 100 >>> print (wg_intfc.wg_config) - {'private-key': None, 'keepalive': 100, 'endpoint': None, 'port': 0, + {'private-key': None, 'keepalive': 100, 'endpoint': None, 'port': 0, 'allowed-ips': [], 'pubkey': None, 'fwmark': 0, 'psk': '/dev/null'} """ |